diff --git a/external/Mongoose/LICENSE b/external/Mongoose/LICENSE deleted file mode 100644 index 9d5778c9..00000000 --- a/external/Mongoose/LICENSE +++ /dev/null @@ -1,16 +0,0 @@ -Copyright (c) 2004-2013 Sergey Lyubka -Copyright (c) 2013-2016 Cesanta Software Limited -All rights reserved - -This software is dual-licensed: you can redistribute it and/or modify -it under the terms of the GNU General Public License version 2 as -published by the Free Software Foundation. For the terms of this -license, see . - -You are free to use this software under the terms of the GNU General -Public License, but WITHOUT ANY WARRANTY; without even the implied -warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -See the GNU General Public License for more details. - -Alternatively, you can license this software under a commercial -license, as set out in . diff --git a/external/Mongoose/mongoose.c b/external/Mongoose/mongoose.c deleted file mode 100644 index bf9567eb..00000000 --- a/external/Mongoose/mongoose.c +++ /dev/null @@ -1,11074 +0,0 @@ -#include "mongoose.h" -#ifdef MG_MODULE_LINES -#line 1 "./src/internal.h" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef CS_MONGOOSE_SRC_INTERNAL_H_ -#define CS_MONGOOSE_SRC_INTERNAL_H_ - -#ifndef MG_MALLOC -#define MG_MALLOC malloc -#endif - -#ifndef MG_CALLOC -#define MG_CALLOC calloc -#endif - -#ifndef MG_REALLOC -#define MG_REALLOC realloc -#endif - -#ifndef MG_FREE -#define MG_FREE free -#endif - -#ifndef MBUF_REALLOC -#define MBUF_REALLOC MG_REALLOC -#endif - -#ifndef MBUF_FREE -#define MBUF_FREE MG_FREE -#endif - -#define MG_SET_PTRPTR(_ptr, _v) \ - do { \ - if (_ptr) *(_ptr) = _v; \ - } while (0) - -#ifndef MG_INTERNAL -#define MG_INTERNAL static -#endif - -#ifdef PICOTCP -#define NO_LIBC -#define MG_DISABLE_FILESYSTEM -#define MG_DISABLE_POPEN -#define MG_DISABLE_CGI -#define MG_DISABLE_DIRECTORY_LISTING -#define MG_DISABLE_SOCKETPAIR -#define MG_DISABLE_PFS -#endif - -/* Amalgamated: #include "mongoose/src/net.h" */ -/* Amalgamated: #include "mongoose/src/http.h" */ - -#define MG_CTL_MSG_MESSAGE_SIZE 8192 - -/* internals that need to be accessible in unit tests */ -MG_INTERNAL struct mg_connection *mg_do_connect(struct mg_connection *nc, - int proto, - union socket_address *sa); - -MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa, - int *proto, char *host, size_t host_len); -MG_INTERNAL void mg_call(struct mg_connection *nc, - mg_event_handler_t ev_handler, int ev, void *ev_data); -void mg_forward(struct mg_connection *from, struct mg_connection *to); -MG_INTERNAL void mg_add_conn(struct mg_mgr *mgr, struct mg_connection *c); -MG_INTERNAL void mg_remove_conn(struct mg_connection *c); -MG_INTERNAL struct mg_connection *mg_create_connection( - struct mg_mgr *mgr, mg_event_handler_t callback, - struct mg_add_sock_opts opts); -#ifndef MG_DISABLE_FILESYSTEM -MG_INTERNAL int mg_uri_to_local_path(struct http_message *hm, - const struct mg_serve_http_opts *opts, - char **local_path, - struct mg_str *remainder); -#endif -#ifdef _WIN32 -/* Retur value is the same as for MultiByteToWideChar. */ -int to_wchar(const char *path, wchar_t *wbuf, size_t wbuf_len); -#endif - -/* - * Reassemble the content of the buffer (buf, blen) which should be - * in the HTTP chunked encoding, by collapsing data chunks to the - * beginning of the buffer. - * - * If chunks get reassembled, modify hm->body to point to the reassembled - * body and fire MG_EV_HTTP_CHUNK event. If handler sets MG_F_DELETE_CHUNK - * in nc->flags, delete reassembled body from the mbuf. - * - * Return reassembled body size. - */ -MG_INTERNAL size_t mg_handle_chunked(struct mg_connection *nc, - struct http_message *hm, char *buf, - size_t blen); - -#ifndef MG_DISABLE_FILESYSTEM -MG_INTERNAL time_t mg_parse_date_string(const char *datetime); -MG_INTERNAL int mg_is_not_modified(struct http_message *hm, cs_stat_t *st); -#endif - -struct ctl_msg { - mg_event_handler_t callback; - char message[MG_CTL_MSG_MESSAGE_SIZE]; -}; - -#ifndef MG_DISABLE_MQTT -struct mg_mqtt_message; -MG_INTERNAL int parse_mqtt(struct mbuf *io, struct mg_mqtt_message *mm); -#endif - -/* Forward declarations for testing. */ -extern void *(*test_malloc)(size_t size); -extern void *(*test_calloc)(size_t count, size_t size); - -#endif /* CS_MONGOOSE_SRC_INTERNAL_H_ */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/base64.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef EXCLUDE_COMMON - -/* Amalgamated: #include "common/base64.h" */ -#include - -/* ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/ */ - -#define NUM_UPPERCASES ('Z' - 'A' + 1) -#define NUM_LETTERS (NUM_UPPERCASES * 2) -#define NUM_DIGITS ('9' - '0' + 1) - -/* - * Emit a base64 code char. - * - * Doesn't use memory, thus it's safe to use to safely dump memory in crashdumps - */ -static void cs_base64_emit_code(struct cs_base64_ctx *ctx, int v) { - if (v < NUM_UPPERCASES) { - ctx->b64_putc(v + 'A', ctx->user_data); - } else if (v < (NUM_LETTERS)) { - ctx->b64_putc(v - NUM_UPPERCASES + 'a', ctx->user_data); - } else if (v < (NUM_LETTERS + NUM_DIGITS)) { - ctx->b64_putc(v - NUM_LETTERS + '0', ctx->user_data); - } else { - ctx->b64_putc(v - NUM_LETTERS - NUM_DIGITS == 0 ? '+' : '/', - ctx->user_data); - } -} - -static void cs_base64_emit_chunk(struct cs_base64_ctx *ctx) { - int a, b, c; - - a = ctx->chunk[0]; - b = ctx->chunk[1]; - c = ctx->chunk[2]; - - cs_base64_emit_code(ctx, a >> 2); - cs_base64_emit_code(ctx, ((a & 3) << 4) | (b >> 4)); - if (ctx->chunk_size > 1) { - cs_base64_emit_code(ctx, (b & 15) << 2 | (c >> 6)); - } - if (ctx->chunk_size > 2) { - cs_base64_emit_code(ctx, c & 63); - } -} - -void cs_base64_init(struct cs_base64_ctx *ctx, cs_base64_putc_t b64_putc, - void *user_data) { - ctx->chunk_size = 0; - ctx->b64_putc = b64_putc; - ctx->user_data = user_data; -} - -void cs_base64_update(struct cs_base64_ctx *ctx, const char *str, size_t len) { - const unsigned char *src = (const unsigned char *) str; - size_t i; - for (i = 0; i < len; i++) { - ctx->chunk[ctx->chunk_size++] = src[i]; - if (ctx->chunk_size == 3) { - cs_base64_emit_chunk(ctx); - ctx->chunk_size = 0; - } - } -} - -void cs_base64_finish(struct cs_base64_ctx *ctx) { - if (ctx->chunk_size > 0) { - int i; - memset(&ctx->chunk[ctx->chunk_size], 0, 3 - ctx->chunk_size); - cs_base64_emit_chunk(ctx); - for (i = 0; i < (3 - ctx->chunk_size); i++) { - ctx->b64_putc('=', ctx->user_data); - } - } -} - -#define BASE64_ENCODE_BODY \ - static const char *b64 = \ - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; \ - int i, j, a, b, c; \ - \ - for (i = j = 0; i < src_len; i += 3) { \ - a = src[i]; \ - b = i + 1 >= src_len ? 0 : src[i + 1]; \ - c = i + 2 >= src_len ? 0 : src[i + 2]; \ - \ - BASE64_OUT(b64[a >> 2]); \ - BASE64_OUT(b64[((a & 3) << 4) | (b >> 4)]); \ - if (i + 1 < src_len) { \ - BASE64_OUT(b64[(b & 15) << 2 | (c >> 6)]); \ - } \ - if (i + 2 < src_len) { \ - BASE64_OUT(b64[c & 63]); \ - } \ - } \ - \ - while (j % 4 != 0) { \ - BASE64_OUT('='); \ - } \ - BASE64_FLUSH() - -#define BASE64_OUT(ch) \ - do { \ - dst[j++] = (ch); \ - } while (0) - -#define BASE64_FLUSH() \ - do { \ - dst[j++] = '\0'; \ - } while (0) - -void cs_base64_encode(const unsigned char *src, int src_len, char *dst) { - BASE64_ENCODE_BODY; -} - -#undef BASE64_OUT -#undef BASE64_FLUSH - -#ifndef CS_DISABLE_STDIO -#define BASE64_OUT(ch) \ - do { \ - fprintf(f, "%c", (ch)); \ - j++; \ - } while (0) - -#define BASE64_FLUSH() - -void cs_fprint_base64(FILE *f, const unsigned char *src, int src_len) { - BASE64_ENCODE_BODY; -} - -#undef BASE64_OUT -#undef BASE64_FLUSH -#endif /* !CS_DISABLE_STDIO */ - -/* Convert one byte of encoded base64 input stream to 6-bit chunk */ -static unsigned char from_b64(unsigned char ch) { - /* Inverse lookup map */ - static const unsigned char tab[128] = { - 255, 255, 255, 255, - 255, 255, 255, 255, /* 0 */ - 255, 255, 255, 255, - 255, 255, 255, 255, /* 8 */ - 255, 255, 255, 255, - 255, 255, 255, 255, /* 16 */ - 255, 255, 255, 255, - 255, 255, 255, 255, /* 24 */ - 255, 255, 255, 255, - 255, 255, 255, 255, /* 32 */ - 255, 255, 255, 62, - 255, 255, 255, 63, /* 40 */ - 52, 53, 54, 55, - 56, 57, 58, 59, /* 48 */ - 60, 61, 255, 255, - 255, 200, 255, 255, /* 56 '=' is 200, on index 61 */ - 255, 0, 1, 2, - 3, 4, 5, 6, /* 64 */ - 7, 8, 9, 10, - 11, 12, 13, 14, /* 72 */ - 15, 16, 17, 18, - 19, 20, 21, 22, /* 80 */ - 23, 24, 25, 255, - 255, 255, 255, 255, /* 88 */ - 255, 26, 27, 28, - 29, 30, 31, 32, /* 96 */ - 33, 34, 35, 36, - 37, 38, 39, 40, /* 104 */ - 41, 42, 43, 44, - 45, 46, 47, 48, /* 112 */ - 49, 50, 51, 255, - 255, 255, 255, 255, /* 120 */ - }; - return tab[ch & 127]; -} - -int cs_base64_decode(const unsigned char *s, int len, char *dst) { - unsigned char a, b, c, d; - int orig_len = len; - while (len >= 4 && (a = from_b64(s[0])) != 255 && - (b = from_b64(s[1])) != 255 && (c = from_b64(s[2])) != 255 && - (d = from_b64(s[3])) != 255) { - s += 4; - len -= 4; - if (a == 200 || b == 200) break; /* '=' can't be there */ - *dst++ = a << 2 | b >> 4; - if (c == 200) break; - *dst++ = b << 4 | c >> 2; - if (d == 200) break; - *dst++ = c << 6 | d; - } - *dst = 0; - return orig_len - len; -} - -#endif /* EXCLUDE_COMMON */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/cs_dbg.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -/* Amalgamated: #include "common/cs_dbg.h" */ - -#include -#include - -/* Amalgamated: #include "common/cs_time.h" */ - -enum cs_log_level cs_log_level = -#ifdef CS_ENABLE_DEBUG - LL_VERBOSE_DEBUG; -#else - LL_ERROR; -#endif - -#ifndef CS_DISABLE_STDIO - -FILE *cs_log_file = NULL; - -#ifdef CS_LOG_TS_DIFF -double cs_log_ts; -#endif - -void cs_log_print_prefix(const char *func) { - if (cs_log_file == NULL) cs_log_file = stderr; - fprintf(cs_log_file, "%-20s ", func); -#ifdef CS_LOG_TS_DIFF - { - double now = cs_time(); - fprintf(cs_log_file, "%7u ", (unsigned int) ((now - cs_log_ts) * 1000000)); - cs_log_ts = now; - } -#endif -} - -void cs_log_printf(const char *fmt, ...) { - va_list ap; - va_start(ap, fmt); - vfprintf(cs_log_file, fmt, ap); - va_end(ap); - fputc('\n', cs_log_file); - fflush(cs_log_file); -} - -void cs_log_set_file(FILE *file) { - cs_log_file = file; -} - -#endif /* !CS_DISABLE_STDIO */ - -void cs_log_set_level(enum cs_log_level level) { - cs_log_level = level; -#if defined(CS_LOG_TS_DIFF) && !defined(CS_DISABLE_STDIO) - cs_log_ts = cs_time(); -#endif -} -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/cs_dirent.h" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#ifndef CS_COMMON_CS_DIRENT_H_ -#define CS_COMMON_CS_DIRENT_H_ - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -#ifdef CS_ENABLE_SPIFFS - -#include - -typedef struct { - spiffs_DIR dh; - struct spiffs_dirent de; -} DIR; - -#define d_name name -#define dirent spiffs_dirent - -int rmdir(const char *path); -int mkdir(const char *path, mode_t mode); - -#endif - -#if defined(_WIN32) -struct dirent { - char d_name[MAX_PATH]; -}; - -typedef struct DIR { - HANDLE handle; - WIN32_FIND_DATAW info; - struct dirent result; -} DIR; -#endif - -#if defined(_WIN32) || defined(CS_ENABLE_SPIFFS) -DIR *opendir(const char *dir_name); -int closedir(DIR *dir); -struct dirent *readdir(DIR *dir); -#endif - -#ifdef __cplusplus -} -#endif /* __cplusplus */ - -#endif /* CS_COMMON_CS_DIRENT_H_ */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/cs_dirent.c" -#endif -/* - * Copyright (c) 2015 Cesanta Software Limited - * All rights reserved - */ - -#ifndef EXCLUDE_COMMON - -/* Amalgamated: #include "common/cs_dirent.h" */ - -/* - * This file contains POSIX opendir/closedir/readdir API implementation - * for systems which do not natively support it (e.g. Windows). - */ - -#ifndef MG_FREE -#define MG_FREE free -#endif - -#ifndef MG_MALLOC -#define MG_MALLOC malloc -#endif - -#ifdef _WIN32 -DIR *opendir(const char *name) { - DIR *dir = NULL; - wchar_t wpath[MAX_PATH]; - DWORD attrs; - - if (name == NULL) { - SetLastError(ERROR_BAD_ARGUMENTS); - } else if ((dir = (DIR *) MG_MALLOC(sizeof(*dir))) == NULL) { - SetLastError(ERROR_NOT_ENOUGH_MEMORY); - } else { - to_wchar(name, wpath, ARRAY_SIZE(wpath)); - attrs = GetFileAttributesW(wpath); - if (attrs != 0xFFFFFFFF && (attrs & FILE_ATTRIBUTE_DIRECTORY)) { - (void) wcscat(wpath, L"\\*"); - dir->handle = FindFirstFileW(wpath, &dir->info); - dir->result.d_name[0] = '\0'; - } else { - MG_FREE(dir); - dir = NULL; - } - } - - return dir; -} - -int closedir(DIR *dir) { - int result = 0; - - if (dir != NULL) { - if (dir->handle != INVALID_HANDLE_VALUE) - result = FindClose(dir->handle) ? 0 : -1; - MG_FREE(dir); - } else { - result = -1; - SetLastError(ERROR_BAD_ARGUMENTS); - } - - return result; -} - -struct dirent *readdir(DIR *dir) { - struct dirent *result = NULL; - - if (dir) { - if (dir->handle != INVALID_HANDLE_VALUE) { - result = &dir->result; - (void) WideCharToMultiByte(CP_UTF8, 0, dir->info.cFileName, -1, - result->d_name, sizeof(result->d_name), NULL, - NULL); - - if (!FindNextFileW(dir->handle, &dir->info)) { - (void) FindClose(dir->handle); - dir->handle = INVALID_HANDLE_VALUE; - } - - } else { - SetLastError(ERROR_FILE_NOT_FOUND); - } - } else { - SetLastError(ERROR_BAD_ARGUMENTS); - } - - return result; -} -#endif - -#ifdef CS_ENABLE_SPIFFS - -DIR *opendir(const char *dir_name) { - DIR *dir = NULL; - extern spiffs fs; - - if (dir_name != NULL && (dir = (DIR *) malloc(sizeof(*dir))) != NULL && - SPIFFS_opendir(&fs, (char *) dir_name, &dir->dh) == NULL) { - free(dir); - dir = NULL; - } - - return dir; -} - -int closedir(DIR *dir) { - if (dir != NULL) { - SPIFFS_closedir(&dir->dh); - free(dir); - } - return 0; -} - -struct dirent *readdir(DIR *dir) { - return SPIFFS_readdir(&dir->dh, &dir->de); -} - -/* SPIFFs doesn't support directory operations */ -int rmdir(const char *path) { - (void) path; - return ENOTDIR; -} - -int mkdir(const char *path, mode_t mode) { - (void) path; - (void) mode; - /* for spiffs supports only root dir, which comes from mongoose as '.' */ - return (strlen(path) == 1 && *path == '.') ? 0 : ENOTDIR; -} - -#endif /* CS_ENABLE_SPIFFS */ - -#endif /* EXCLUDE_COMMON */ - -/* ISO C requires a translation unit to contain at least one declaration */ -typedef int cs_dirent_dummy; -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/cs_time.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -/* Amalgamated: #include "common/cs_time.h" */ - -#ifndef _WIN32 -#include -#if !defined(CS_PLATFORM) || \ - (CS_PLATFORM != CS_P_CC3200 && CS_PLATFORM != CS_P_MSP432) -#include -#endif -#else -#include -#endif - -double cs_time() { - double now; -#ifndef _WIN32 - struct timeval tv; - if (gettimeofday(&tv, NULL /* tz */) != 0) return 0; - now = (double) tv.tv_sec + (((double) tv.tv_usec) / 1000000.0); -#else - now = GetTickCount() / 1000.0; -#endif - return now; -} -#ifdef MG_MODULE_LINES -#line 1 "./src/../deps/frozen/frozen.c" -#endif -/* - * Copyright (c) 2004-2013 Sergey Lyubka - * Copyright (c) 2013 Cesanta Software Limited - * All rights reserved - * - * This library is dual-licensed: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. For the terms of this - * license, see . - * - * You are free to use this library under the terms of the GNU General - * Public License, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * See the GNU General Public License for more details. - * - * Alternatively, you can license this library under a commercial - * license, as set out in . - */ - -#ifndef _CRT_SECURE_NO_WARNINGS -#define _CRT_SECURE_NO_WARNINGS /* Disable deprecation warning in VS2005+ */ -#endif - -#include -#include -#include -#include -/* Amalgamated: #include "frozen.h" */ - -#ifdef _WIN32 -#define snprintf _snprintf -#endif - -#ifndef FROZEN_REALLOC -#define FROZEN_REALLOC realloc -#endif - -#ifndef FROZEN_FREE -#define FROZEN_FREE free -#endif - -struct frozen { - const char *end; - const char *cur; - struct json_token *tokens; - int max_tokens; - int num_tokens; - int do_realloc; -}; - -static int parse_object(struct frozen *f); -static int parse_value(struct frozen *f); - -#define EXPECT(cond, err_code) \ - do { \ - if (!(cond)) return (err_code); \ - } while (0) -#define TRY(expr) \ - do { \ - int _n = expr; \ - if (_n < 0) return _n; \ - } while (0) -#define END_OF_STRING (-1) - -static int left(const struct frozen *f) { - return f->end - f->cur; -} - -static int is_space(int ch) { - return ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n'; -} - -static void skip_whitespaces(struct frozen *f) { - while (f->cur < f->end && is_space(*f->cur)) f->cur++; -} - -static int cur(struct frozen *f) { - skip_whitespaces(f); - return f->cur >= f->end ? END_OF_STRING : *(unsigned char *) f->cur; -} - -static int test_and_skip(struct frozen *f, int expected) { - int ch = cur(f); - if (ch == expected) { - f->cur++; - return 0; - } - return ch == END_OF_STRING ? JSON_STRING_INCOMPLETE : JSON_STRING_INVALID; -} - -static int test_no_skip(struct frozen *f, int expected) { - int ch = cur(f); - if (ch == expected) { - return 0; - } - return ch == END_OF_STRING ? JSON_STRING_INCOMPLETE : JSON_STRING_INVALID; -} - -static int is_alpha(int ch) { - return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'); -} - -static int is_digit(int ch) { - return ch >= '0' && ch <= '9'; -} - -static int is_hex_digit(int ch) { - return is_digit(ch) || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F'); -} - -static int get_escape_len(const char *s, int len) { - switch (*s) { - case 'u': - return len < 6 ? JSON_STRING_INCOMPLETE - : is_hex_digit(s[1]) && is_hex_digit(s[2]) && - is_hex_digit(s[3]) && is_hex_digit(s[4]) - ? 5 - : JSON_STRING_INVALID; - case '"': - case '\\': - case '/': - case 'b': - case 'f': - case 'n': - case 'r': - case 't': - return len < 2 ? JSON_STRING_INCOMPLETE : 1; - default: - return JSON_STRING_INVALID; - } -} - -static int capture_ptr(struct frozen *f, const char *ptr, enum json_type type) { - if (f->do_realloc && f->num_tokens >= f->max_tokens) { - int new_size = f->max_tokens == 0 ? 100 : f->max_tokens * 2; - void *p = FROZEN_REALLOC(f->tokens, new_size * sizeof(f->tokens[0])); - if (p == NULL) return JSON_TOKEN_ARRAY_TOO_SMALL; - f->max_tokens = new_size; - f->tokens = (struct json_token *) p; - } - if (f->tokens == NULL || f->max_tokens == 0) return 0; - if (f->num_tokens >= f->max_tokens) return JSON_TOKEN_ARRAY_TOO_SMALL; - f->tokens[f->num_tokens].ptr = ptr; - f->tokens[f->num_tokens].type = type; - f->num_tokens++; - return 0; -} - -static int capture_len(struct frozen *f, int token_index, const char *ptr) { - if (f->tokens == 0 || f->max_tokens == 0) return 0; - EXPECT(token_index >= 0 && token_index < f->max_tokens, JSON_STRING_INVALID); - f->tokens[token_index].len = ptr - f->tokens[token_index].ptr; - f->tokens[token_index].num_desc = (f->num_tokens - 1) - token_index; - return 0; -} - -/* identifier = letter { letter | digit | '_' } */ -static int parse_identifier(struct frozen *f) { - EXPECT(is_alpha(cur(f)), JSON_STRING_INVALID); - TRY(capture_ptr(f, f->cur, JSON_TYPE_STRING)); - while (f->cur < f->end && - (*f->cur == '_' || is_alpha(*f->cur) || is_digit(*f->cur))) { - f->cur++; - } - capture_len(f, f->num_tokens - 1, f->cur); - return 0; -} - -static int get_utf8_char_len(unsigned char ch) { - if ((ch & 0x80) == 0) return 1; - switch (ch & 0xf0) { - case 0xf0: - return 4; - case 0xe0: - return 3; - default: - return 2; - } -} - -/* string = '"' { quoted_printable_chars } '"' */ -static int parse_string(struct frozen *f) { - int n, ch = 0, len = 0; - TRY(test_and_skip(f, '"')); - TRY(capture_ptr(f, f->cur, JSON_TYPE_STRING)); - for (; f->cur < f->end; f->cur += len) { - ch = *(unsigned char *) f->cur; - len = get_utf8_char_len((unsigned char) ch); - EXPECT(ch >= 32 && len > 0, JSON_STRING_INVALID); /* No control chars */ - EXPECT(len < left(f), JSON_STRING_INCOMPLETE); - if (ch == '\\') { - EXPECT((n = get_escape_len(f->cur + 1, left(f))) > 0, n); - len += n; - } else if (ch == '"') { - capture_len(f, f->num_tokens - 1, f->cur); - f->cur++; - break; - }; - } - return ch == '"' ? 0 : JSON_STRING_INCOMPLETE; -} - -/* number = [ '-' ] digit+ [ '.' digit+ ] [ ['e'|'E'] ['+'|'-'] digit+ ] */ -static int parse_number(struct frozen *f) { - int ch = cur(f); - TRY(capture_ptr(f, f->cur, JSON_TYPE_NUMBER)); - if (ch == '-') f->cur++; - EXPECT(f->cur < f->end, JSON_STRING_INCOMPLETE); - EXPECT(is_digit(f->cur[0]), JSON_STRING_INVALID); - while (f->cur < f->end && is_digit(f->cur[0])) f->cur++; - if (f->cur < f->end && f->cur[0] == '.') { - f->cur++; - EXPECT(f->cur < f->end, JSON_STRING_INCOMPLETE); - EXPECT(is_digit(f->cur[0]), JSON_STRING_INVALID); - while (f->cur < f->end && is_digit(f->cur[0])) f->cur++; - } - if (f->cur < f->end && (f->cur[0] == 'e' || f->cur[0] == 'E')) { - f->cur++; - EXPECT(f->cur < f->end, JSON_STRING_INCOMPLETE); - if ((f->cur[0] == '+' || f->cur[0] == '-')) f->cur++; - EXPECT(f->cur < f->end, JSON_STRING_INCOMPLETE); - EXPECT(is_digit(f->cur[0]), JSON_STRING_INVALID); - while (f->cur < f->end && is_digit(f->cur[0])) f->cur++; - } - capture_len(f, f->num_tokens - 1, f->cur); - return 0; -} - -/* array = '[' [ value { ',' value } ] ']' */ -static int parse_array(struct frozen *f) { - int ind; - TRY(test_and_skip(f, '[')); - TRY(capture_ptr(f, f->cur - 1, JSON_TYPE_ARRAY)); - ind = f->num_tokens - 1; - while (cur(f) != ']') { - TRY(parse_value(f)); - if (cur(f) == ',') f->cur++; - } - TRY(test_and_skip(f, ']')); - capture_len(f, ind, f->cur); - return 0; -} - -static int compare(const char *s, const char *str, int len) { - int i = 0; - while (i < len && s[i] == str[i]) i++; - return i == len ? 1 : 0; -} - -static int expect(struct frozen *f, const char *s, int len, enum json_type t) { - int i, n = left(f); - - TRY(capture_ptr(f, f->cur, t)); - for (i = 0; i < len; i++) { - if (i >= n) return JSON_STRING_INCOMPLETE; - if (f->cur[i] != s[i]) return JSON_STRING_INVALID; - } - f->cur += len; - TRY(capture_len(f, f->num_tokens - 1, f->cur)); - - return 0; -} - -/* value = 'null' | 'true' | 'false' | number | string | array | object */ -static int parse_value(struct frozen *f) { - int ch = cur(f); - - switch (ch) { - case '"': - TRY(parse_string(f)); - break; - case '{': - TRY(parse_object(f)); - break; - case '[': - TRY(parse_array(f)); - break; - case 'n': - TRY(expect(f, "null", 4, JSON_TYPE_NULL)); - break; - case 't': - TRY(expect(f, "true", 4, JSON_TYPE_TRUE)); - break; - case 'f': - TRY(expect(f, "false", 5, JSON_TYPE_FALSE)); - break; - case '-': - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - TRY(parse_number(f)); - break; - default: - return ch == END_OF_STRING ? JSON_STRING_INCOMPLETE : JSON_STRING_INVALID; - } - - return 0; -} - -/* key = identifier | string */ -static int parse_key(struct frozen *f) { - int ch = cur(f); -#if 0 - printf("%s 1 [%.*s]\n", __func__, (int) (f->end - f->cur), f->cur); -#endif - if (is_alpha(ch)) { - TRY(parse_identifier(f)); - } else if (ch == '"') { - TRY(parse_string(f)); - } else { - return ch == END_OF_STRING ? JSON_STRING_INCOMPLETE : JSON_STRING_INVALID; - } - return 0; -} - -/* pair = key ':' value */ -static int parse_pair(struct frozen *f) { - TRY(parse_key(f)); - TRY(test_and_skip(f, ':')); - TRY(parse_value(f)); - return 0; -} - -/* object = '{' pair { ',' pair } '}' */ -static int parse_object(struct frozen *f) { - int ind; - TRY(test_and_skip(f, '{')); - TRY(capture_ptr(f, f->cur - 1, JSON_TYPE_OBJECT)); - ind = f->num_tokens - 1; - while (cur(f) != '}') { - TRY(parse_pair(f)); - if (cur(f) == ',') f->cur++; - } - TRY(test_and_skip(f, '}')); - capture_len(f, ind, f->cur); - return 0; -} - -static int doit(struct frozen *f) { - int ret = 0; - - if (f->cur == 0 || f->end < f->cur) return JSON_STRING_INVALID; - if (f->end == f->cur) return JSON_STRING_INCOMPLETE; - - if (0 == (ret = test_no_skip(f, '{'))) { - TRY(parse_object(f)); - } else if (0 == (ret = test_no_skip(f, '['))) { - TRY(parse_array(f)); - } else { - return ret; - } - - TRY(capture_ptr(f, f->cur, JSON_TYPE_EOF)); - capture_len(f, f->num_tokens, f->cur); - return 0; -} - -/* json = object */ -int parse_json(const char *s, int s_len, struct json_token *arr, int arr_len) { - struct frozen frozen; - - memset(&frozen, 0, sizeof(frozen)); - frozen.end = s + s_len; - frozen.cur = s; - frozen.tokens = arr; - frozen.max_tokens = arr_len; - - TRY(doit(&frozen)); - - return frozen.cur - s; -} - -struct json_token *parse_json2(const char *s, int s_len) { - struct frozen frozen; - - memset(&frozen, 0, sizeof(frozen)); - frozen.end = s + s_len; - frozen.cur = s; - frozen.do_realloc = 1; - - if (doit(&frozen) < 0) { - FROZEN_FREE((void *) frozen.tokens); - frozen.tokens = NULL; - } - return frozen.tokens; -} - -static int path_part_len(const char *p) { - int i = 0; - while (p[i] != '\0' && p[i] != '[' && p[i] != '.') i++; - return i; -} - -struct json_token *find_json_token(struct json_token *toks, const char *path) { - while (path != 0 && path[0] != '\0') { - int i, ind2 = 0, ind = -1, skip = 2, n = path_part_len(path); - if (path[0] == '[') { - if (toks->type != JSON_TYPE_ARRAY || !is_digit(path[1])) return 0; - for (ind = 0, n = 1; path[n] != ']' && path[n] != '\0'; n++) { - if (!is_digit(path[n])) return 0; - ind *= 10; - ind += path[n] - '0'; - } - if (path[n++] != ']') return 0; - skip = 1; /* In objects, we skip 2 elems while iterating, in arrays 1. */ - } else if (toks->type != JSON_TYPE_OBJECT) - return 0; - toks++; - for (i = 0; i < toks[-1].num_desc; i += skip, ind2++) { - /* ind == -1 indicated that we're iterating an array, not object */ - if (ind == -1 && toks[i].type != JSON_TYPE_STRING) return 0; - if (ind2 == ind || - (ind == -1 && toks[i].len == n && compare(path, toks[i].ptr, n))) { - i += skip - 1; - break; - }; - if (toks[i - 1 + skip].type == JSON_TYPE_ARRAY || - toks[i - 1 + skip].type == JSON_TYPE_OBJECT) { - i += toks[i - 1 + skip].num_desc; - } - } - if (i == toks[-1].num_desc) return 0; - path += n; - if (path[0] == '.') path++; - if (path[0] == '\0') return &toks[i]; - toks += i; - } - return 0; -} - -int json_emit_long(char *buf, int buf_len, long int value) { - char tmp[20]; - int n = snprintf(tmp, sizeof(tmp), "%ld", value); - strncpy(buf, tmp, buf_len > 0 ? buf_len : 0); - return n; -} - -int json_emit_double(char *buf, int buf_len, double value) { - char tmp[20]; - int n = snprintf(tmp, sizeof(tmp), "%g", value); - strncpy(buf, tmp, buf_len > 0 ? buf_len : 0); - return n; -} - -int json_emit_quoted_str(char *s, int s_len, const char *str, int len) { - const char *begin = s, *end = s + s_len, *str_end = str + len; - char ch; - -#define EMIT(x) \ - do { \ - if (s < end) *s = x; \ - s++; \ - } while (0) - - EMIT('"'); - while (str < str_end) { - ch = *str++; - switch (ch) { - case '"': - EMIT('\\'); - EMIT('"'); - break; - case '\\': - EMIT('\\'); - EMIT('\\'); - break; - case '\b': - EMIT('\\'); - EMIT('b'); - break; - case '\f': - EMIT('\\'); - EMIT('f'); - break; - case '\n': - EMIT('\\'); - EMIT('n'); - break; - case '\r': - EMIT('\\'); - EMIT('r'); - break; - case '\t': - EMIT('\\'); - EMIT('t'); - break; - default: - EMIT(ch); - } - } - EMIT('"'); - if (s < end) { - *s = '\0'; - } - - return s - begin; -} - -int json_emit_unquoted_str(char *buf, int buf_len, const char *str, int len) { - if (buf_len > 0 && len > 0) { - int n = len < buf_len ? len : buf_len; - memcpy(buf, str, n); - if (n < buf_len) { - buf[n] = '\0'; - } - } - return len; -} - -int json_emit_va(char *s, int s_len, const char *fmt, va_list ap) { - const char *end = s + s_len, *str, *orig = s; - size_t len; - - while (*fmt != '\0') { - switch (*fmt) { - case '[': - case ']': - case '{': - case '}': - case ',': - case ':': - case ' ': - case '\r': - case '\n': - case '\t': - if (s < end) { - *s = *fmt; - } - s++; - break; - case 'i': - s += json_emit_long(s, end - s, va_arg(ap, long) ); - break; - case 'f': - s += json_emit_double(s, end - s, va_arg(ap, double) ); - break; - case 'v': - str = va_arg(ap, char *); - len = va_arg(ap, size_t); - s += json_emit_quoted_str(s, end - s, str, len); - break; - case 'V': - str = va_arg(ap, char *); - len = va_arg(ap, size_t); - s += json_emit_unquoted_str(s, end - s, str, len); - break; - case 's': - str = va_arg(ap, char *); - s += json_emit_quoted_str(s, end - s, str, strlen(str)); - break; - case 'S': - str = va_arg(ap, char *); - s += json_emit_unquoted_str(s, end - s, str, strlen(str)); - break; - case 'T': - s += json_emit_unquoted_str(s, end - s, "true", 4); - break; - case 'F': - s += json_emit_unquoted_str(s, end - s, "false", 5); - break; - case 'N': - s += json_emit_unquoted_str(s, end - s, "null", 4); - break; - default: - return 0; - } - fmt++; - } - - /* Best-effort to 0-terminate generated string */ - if (s < end) { - *s = '\0'; - } - - return s - orig; -} - -int json_emit(char *buf, int buf_len, const char *fmt, ...) { - int len; - va_list ap; - - va_start(ap, fmt); - len = json_emit_va(buf, buf_len, fmt, ap); - va_end(ap); - - return len; -} -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/md5.c" -#endif -/* - * This code implements the MD5 message-digest algorithm. - * The algorithm is due to Ron Rivest. This code was - * written by Colin Plumb in 1993, no copyright is claimed. - * This code is in the public domain; do with it what you wish. - * - * Equivalent code is available from RSA Data Security, Inc. - * This code has been tested against that, and is equivalent, - * except that you don't need to include two pages of legalese - * with every copy. - * - * To compute the message digest of a chunk of bytes, declare an - * MD5Context structure, pass it to MD5Init, call MD5Update as - * needed on buffers full of bytes, and then call MD5Final, which - * will fill a supplied 16-byte array with the digest. - */ - -#if !defined(DISABLE_MD5) && !defined(EXCLUDE_COMMON) - -/* Amalgamated: #include "common/md5.h" */ - -#ifndef CS_ENABLE_NATIVE_MD5 -static void byteReverse(unsigned char *buf, unsigned longs) { -/* Forrest: MD5 expect LITTLE_ENDIAN, swap if BIG_ENDIAN */ -#if BYTE_ORDER == BIG_ENDIAN - do { - uint32_t t = (uint32_t)((unsigned) buf[3] << 8 | buf[2]) << 16 | - ((unsigned) buf[1] << 8 | buf[0]); - *(uint32_t *) buf = t; - buf += 4; - } while (--longs); -#else - (void) buf; - (void) longs; -#endif -} - -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#define F4(x, y, z) (y ^ (x | ~z)) - -#define MD5STEP(f, w, x, y, z, data, s) \ - (w += f(x, y, z) + data, w = w << s | w >> (32 - s), w += x) - -/* - * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious - * initialization constants. - */ -void MD5_Init(MD5_CTX *ctx) { - ctx->buf[0] = 0x67452301; - ctx->buf[1] = 0xefcdab89; - ctx->buf[2] = 0x98badcfe; - ctx->buf[3] = 0x10325476; - - ctx->bits[0] = 0; - ctx->bits[1] = 0; -} - -static void MD5Transform(uint32_t buf[4], uint32_t const in[16]) { - register uint32_t a, b, c, d; - - a = buf[0]; - b = buf[1]; - c = buf[2]; - d = buf[3]; - - MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); - MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); - MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); - MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); - MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); - MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); - MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); - MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); - MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); - MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); - MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); - MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); - MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); - MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); - MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); - MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); - - MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); - MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); - MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); - MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); - MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); - MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); - MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); - MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); - MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); - MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); - MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); - MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); - MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); - MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); - MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); - MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); - - MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); - MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); - MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); - MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); - MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); - MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); - MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); - MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); - MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); - MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); - MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); - MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); - MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); - MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); - MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); - MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); - - MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); - MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); - MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); - MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); - MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); - MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); - MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); - MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); - MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); - MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); - MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); - MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); - MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); - MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); - MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); - MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - -void MD5_Update(MD5_CTX *ctx, const unsigned char *buf, size_t len) { - uint32_t t; - - t = ctx->bits[0]; - if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t) ctx->bits[1]++; - ctx->bits[1] += (uint32_t) len >> 29; - - t = (t >> 3) & 0x3f; - - if (t) { - unsigned char *p = (unsigned char *) ctx->in + t; - - t = 64 - t; - if (len < t) { - memcpy(p, buf, len); - return; - } - memcpy(p, buf, t); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - buf += t; - len -= t; - } - - while (len >= 64) { - memcpy(ctx->in, buf, 64); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - buf += 64; - len -= 64; - } - - memcpy(ctx->in, buf, len); -} - -void MD5_Final(unsigned char digest[16], MD5_CTX *ctx) { - unsigned count; - unsigned char *p; - uint32_t *a; - - count = (ctx->bits[0] >> 3) & 0x3F; - - p = ctx->in + count; - *p++ = 0x80; - count = 64 - 1 - count; - if (count < 8) { - memset(p, 0, count); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - memset(ctx->in, 0, 56); - } else { - memset(p, 0, count - 8); - } - byteReverse(ctx->in, 14); - - a = (uint32_t *) ctx->in; - a[14] = ctx->bits[0]; - a[15] = ctx->bits[1]; - - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - byteReverse((unsigned char *) ctx->buf, 4); - memcpy(digest, ctx->buf, 16); - memset((char *) ctx, 0, sizeof(*ctx)); -} -#endif /* CS_ENABLE_NATIVE_MD5 */ - -/* - * Stringify binary data. Output buffer size must be 2 * size_of_input + 1 - * because each byte of input takes 2 bytes in string representation - * plus 1 byte for the terminating \0 character. - */ -void cs_to_hex(char *to, const unsigned char *p, size_t len) { - static const char *hex = "0123456789abcdef"; - - for (; len--; p++) { - *to++ = hex[p[0] >> 4]; - *to++ = hex[p[0] & 0x0f]; - } - *to = '\0'; -} - -char *cs_md5(char buf[33], ...) { - unsigned char hash[16]; - const unsigned char *p; - va_list ap; - MD5_CTX ctx; - - MD5_Init(&ctx); - - va_start(ap, buf); - while ((p = va_arg(ap, const unsigned char *) ) != NULL) { - size_t len = va_arg(ap, size_t); - MD5_Update(&ctx, p, len); - } - va_end(ap); - - MD5_Final(hash, &ctx); - cs_to_hex(buf, hash, sizeof(hash)); - - return buf; -} - -#endif /* EXCLUDE_COMMON */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/mbuf.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef EXCLUDE_COMMON - -#include -#include -/* Amalgamated: #include "common/mbuf.h" */ - -#ifndef MBUF_REALLOC -#define MBUF_REALLOC realloc -#endif - -#ifndef MBUF_FREE -#define MBUF_FREE free -#endif - -void mbuf_init(struct mbuf *mbuf, size_t initial_size) { - mbuf->len = mbuf->size = 0; - mbuf->buf = NULL; - mbuf_resize(mbuf, initial_size); -} - -void mbuf_free(struct mbuf *mbuf) { - if (mbuf->buf != NULL) { - MBUF_FREE(mbuf->buf); - mbuf_init(mbuf, 0); - } -} - -void mbuf_resize(struct mbuf *a, size_t new_size) { - if (new_size > a->size || (new_size < a->size && new_size >= a->len)) { - char *buf = (char *) MBUF_REALLOC(a->buf, new_size); - /* - * In case realloc fails, there's not much we can do, except keep things as - * they are. Note that NULL is a valid return value from realloc when - * size == 0, but that is covered too. - */ - if (buf == NULL && new_size != 0) return; - a->buf = buf; - a->size = new_size; - } -} - -void mbuf_trim(struct mbuf *mbuf) { - mbuf_resize(mbuf, mbuf->len); -} - -size_t mbuf_insert(struct mbuf *a, size_t off, const void *buf, size_t len) { - char *p = NULL; - - assert(a != NULL); - assert(a->len <= a->size); - assert(off <= a->len); - - /* check overflow */ - if (~(size_t) 0 - (size_t) a->buf < len) return 0; - - if (a->len + len <= a->size) { - memmove(a->buf + off + len, a->buf + off, a->len - off); - if (buf != NULL) { - memcpy(a->buf + off, buf, len); - } - a->len += len; - } else { - size_t new_size = (a->len + len) * MBUF_SIZE_MULTIPLIER; - if ((p = (char *) MBUF_REALLOC(a->buf, new_size)) != NULL) { - a->buf = p; - memmove(a->buf + off + len, a->buf + off, a->len - off); - if (buf != NULL) memcpy(a->buf + off, buf, len); - a->len += len; - a->size = new_size; - } else { - len = 0; - } - } - - return len; -} - -size_t mbuf_append(struct mbuf *a, const void *buf, size_t len) { - return mbuf_insert(a, a->len, buf, len); -} - -void mbuf_remove(struct mbuf *mb, size_t n) { - if (n > 0 && n <= mb->len) { - memmove(mb->buf, mb->buf + n, mb->len - n); - mb->len -= n; - } -} - -#endif /* EXCLUDE_COMMON */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/sha1.c" -#endif -/* Copyright(c) By Steve Reid */ -/* 100% Public Domain */ - -#if !defined(DISABLE_SHA1) && !defined(EXCLUDE_COMMON) - -/* Amalgamated: #include "common/sha1.h" */ - -#define SHA1HANDSOFF -#if defined(__sun) -/* Amalgamated: #include "common/solarisfixes.h" */ -#endif - -union char64long16 { - unsigned char c[64]; - uint32_t l[16]; -}; - -#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) - -static uint32_t blk0(union char64long16 *block, int i) { -/* Forrest: SHA expect BIG_ENDIAN, swap if LITTLE_ENDIAN */ -#if BYTE_ORDER == LITTLE_ENDIAN - block->l[i] = - (rol(block->l[i], 24) & 0xFF00FF00) | (rol(block->l[i], 8) & 0x00FF00FF); -#endif - return block->l[i]; -} - -/* Avoid redefine warning (ARM /usr/include/sys/ucontext.h define R0~R4) */ -#undef blk -#undef R0 -#undef R1 -#undef R2 -#undef R3 -#undef R4 - -#define blk(i) \ - (block->l[i & 15] = rol(block->l[(i + 13) & 15] ^ block->l[(i + 8) & 15] ^ \ - block->l[(i + 2) & 15] ^ block->l[i & 15], \ - 1)) -#define R0(v, w, x, y, z, i) \ - z += ((w & (x ^ y)) ^ y) + blk0(block, i) + 0x5A827999 + rol(v, 5); \ - w = rol(w, 30); -#define R1(v, w, x, y, z, i) \ - z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + rol(v, 5); \ - w = rol(w, 30); -#define R2(v, w, x, y, z, i) \ - z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + rol(v, 5); \ - w = rol(w, 30); -#define R3(v, w, x, y, z, i) \ - z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + rol(v, 5); \ - w = rol(w, 30); -#define R4(v, w, x, y, z, i) \ - z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + rol(v, 5); \ - w = rol(w, 30); - -void cs_sha1_transform(uint32_t state[5], const unsigned char buffer[64]) { - uint32_t a, b, c, d, e; - union char64long16 block[1]; - - memcpy(block, buffer, 64); - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - e = state[4]; - R0(a, b, c, d, e, 0); - R0(e, a, b, c, d, 1); - R0(d, e, a, b, c, 2); - R0(c, d, e, a, b, 3); - R0(b, c, d, e, a, 4); - R0(a, b, c, d, e, 5); - R0(e, a, b, c, d, 6); - R0(d, e, a, b, c, 7); - R0(c, d, e, a, b, 8); - R0(b, c, d, e, a, 9); - R0(a, b, c, d, e, 10); - R0(e, a, b, c, d, 11); - R0(d, e, a, b, c, 12); - R0(c, d, e, a, b, 13); - R0(b, c, d, e, a, 14); - R0(a, b, c, d, e, 15); - R1(e, a, b, c, d, 16); - R1(d, e, a, b, c, 17); - R1(c, d, e, a, b, 18); - R1(b, c, d, e, a, 19); - R2(a, b, c, d, e, 20); - R2(e, a, b, c, d, 21); - R2(d, e, a, b, c, 22); - R2(c, d, e, a, b, 23); - R2(b, c, d, e, a, 24); - R2(a, b, c, d, e, 25); - R2(e, a, b, c, d, 26); - R2(d, e, a, b, c, 27); - R2(c, d, e, a, b, 28); - R2(b, c, d, e, a, 29); - R2(a, b, c, d, e, 30); - R2(e, a, b, c, d, 31); - R2(d, e, a, b, c, 32); - R2(c, d, e, a, b, 33); - R2(b, c, d, e, a, 34); - R2(a, b, c, d, e, 35); - R2(e, a, b, c, d, 36); - R2(d, e, a, b, c, 37); - R2(c, d, e, a, b, 38); - R2(b, c, d, e, a, 39); - R3(a, b, c, d, e, 40); - R3(e, a, b, c, d, 41); - R3(d, e, a, b, c, 42); - R3(c, d, e, a, b, 43); - R3(b, c, d, e, a, 44); - R3(a, b, c, d, e, 45); - R3(e, a, b, c, d, 46); - R3(d, e, a, b, c, 47); - R3(c, d, e, a, b, 48); - R3(b, c, d, e, a, 49); - R3(a, b, c, d, e, 50); - R3(e, a, b, c, d, 51); - R3(d, e, a, b, c, 52); - R3(c, d, e, a, b, 53); - R3(b, c, d, e, a, 54); - R3(a, b, c, d, e, 55); - R3(e, a, b, c, d, 56); - R3(d, e, a, b, c, 57); - R3(c, d, e, a, b, 58); - R3(b, c, d, e, a, 59); - R4(a, b, c, d, e, 60); - R4(e, a, b, c, d, 61); - R4(d, e, a, b, c, 62); - R4(c, d, e, a, b, 63); - R4(b, c, d, e, a, 64); - R4(a, b, c, d, e, 65); - R4(e, a, b, c, d, 66); - R4(d, e, a, b, c, 67); - R4(c, d, e, a, b, 68); - R4(b, c, d, e, a, 69); - R4(a, b, c, d, e, 70); - R4(e, a, b, c, d, 71); - R4(d, e, a, b, c, 72); - R4(c, d, e, a, b, 73); - R4(b, c, d, e, a, 74); - R4(a, b, c, d, e, 75); - R4(e, a, b, c, d, 76); - R4(d, e, a, b, c, 77); - R4(c, d, e, a, b, 78); - R4(b, c, d, e, a, 79); - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; - /* Erase working structures. The order of operations is important, - * used to ensure that compiler doesn't optimize those out. */ - memset(block, 0, sizeof(block)); - a = b = c = d = e = 0; - (void) a; - (void) b; - (void) c; - (void) d; - (void) e; -} - -void cs_sha1_init(cs_sha1_ctx *context) { - context->state[0] = 0x67452301; - context->state[1] = 0xEFCDAB89; - context->state[2] = 0x98BADCFE; - context->state[3] = 0x10325476; - context->state[4] = 0xC3D2E1F0; - context->count[0] = context->count[1] = 0; -} - -void cs_sha1_update(cs_sha1_ctx *context, const unsigned char *data, - uint32_t len) { - uint32_t i, j; - - j = context->count[0]; - if ((context->count[0] += len << 3) < j) context->count[1]++; - context->count[1] += (len >> 29); - j = (j >> 3) & 63; - if ((j + len) > 63) { - memcpy(&context->buffer[j], data, (i = 64 - j)); - cs_sha1_transform(context->state, context->buffer); - for (; i + 63 < len; i += 64) { - cs_sha1_transform(context->state, &data[i]); - } - j = 0; - } else - i = 0; - memcpy(&context->buffer[j], &data[i], len - i); -} - -void cs_sha1_final(unsigned char digest[20], cs_sha1_ctx *context) { - unsigned i; - unsigned char finalcount[8], c; - - for (i = 0; i < 8; i++) { - finalcount[i] = (unsigned char) ((context->count[(i >= 4 ? 0 : 1)] >> - ((3 - (i & 3)) * 8)) & - 255); - } - c = 0200; - cs_sha1_update(context, &c, 1); - while ((context->count[0] & 504) != 448) { - c = 0000; - cs_sha1_update(context, &c, 1); - } - cs_sha1_update(context, finalcount, 8); - for (i = 0; i < 20; i++) { - digest[i] = - (unsigned char) ((context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255); - } - memset(context, '\0', sizeof(*context)); - memset(&finalcount, '\0', sizeof(finalcount)); -} - -void cs_hmac_sha1(const unsigned char *key, size_t keylen, - const unsigned char *data, size_t datalen, - unsigned char out[20]) { - cs_sha1_ctx ctx; - unsigned char buf1[64], buf2[64], tmp_key[20], i; - - if (keylen > sizeof(buf1)) { - cs_sha1_init(&ctx); - cs_sha1_update(&ctx, key, keylen); - cs_sha1_final(tmp_key, &ctx); - key = tmp_key; - keylen = sizeof(tmp_key); - } - - memset(buf1, 0, sizeof(buf1)); - memset(buf2, 0, sizeof(buf2)); - memcpy(buf1, key, keylen); - memcpy(buf2, key, keylen); - - for (i = 0; i < sizeof(buf1); i++) { - buf1[i] ^= 0x36; - buf2[i] ^= 0x5c; - } - - cs_sha1_init(&ctx); - cs_sha1_update(&ctx, buf1, sizeof(buf1)); - cs_sha1_update(&ctx, data, datalen); - cs_sha1_final(out, &ctx); - - cs_sha1_init(&ctx); - cs_sha1_update(&ctx, buf2, sizeof(buf2)); - cs_sha1_update(&ctx, out, 20); - cs_sha1_final(out, &ctx); -} - -#endif /* EXCLUDE_COMMON */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/str_util.c" -#endif -/* - * Copyright (c) 2015 Cesanta Software Limited - * All rights reserved - */ - -#ifndef EXCLUDE_COMMON - -/* Amalgamated: #include "common/platform.h" */ -/* Amalgamated: #include "common/str_util.h" */ - -size_t c_strnlen(const char *s, size_t maxlen) { - size_t l = 0; - for (; l < maxlen && s[l] != '\0'; l++) { - } - return l; -} - -#define C_SNPRINTF_APPEND_CHAR(ch) \ - do { \ - if (i < (int) buf_size) buf[i] = ch; \ - i++; \ - } while (0) - -#define C_SNPRINTF_FLAG_ZERO 1 - -#ifdef C_DISABLE_BUILTIN_SNPRINTF -int c_vsnprintf(char *buf, size_t buf_size, const char *fmt, va_list ap) { - return vsnprintf(buf, buf_size, fmt, ap); -} -#else -static int c_itoa(char *buf, size_t buf_size, int64_t num, int base, int flags, - int field_width) { - char tmp[40]; - int i = 0, k = 0, neg = 0; - - if (num < 0) { - neg++; - num = -num; - } - - /* Print into temporary buffer - in reverse order */ - do { - int rem = num % base; - if (rem < 10) { - tmp[k++] = '0' + rem; - } else { - tmp[k++] = 'a' + (rem - 10); - } - num /= base; - } while (num > 0); - - /* Zero padding */ - if (flags && C_SNPRINTF_FLAG_ZERO) { - while (k < field_width && k < (int) sizeof(tmp) - 1) { - tmp[k++] = '0'; - } - } - - /* And sign */ - if (neg) { - tmp[k++] = '-'; - } - - /* Now output */ - while (--k >= 0) { - C_SNPRINTF_APPEND_CHAR(tmp[k]); - } - - return i; -} - -int c_vsnprintf(char *buf, size_t buf_size, const char *fmt, va_list ap) { - int ch, i = 0, len_mod, flags, precision, field_width; - - while ((ch = *fmt++) != '\0') { - if (ch != '%') { - C_SNPRINTF_APPEND_CHAR(ch); - } else { - /* - * Conversion specification: - * zero or more flags (one of: # 0 - + ') - * an optional minimum field width (digits) - * an optional precision (. followed by digits, or *) - * an optional length modifier (one of: hh h l ll L q j z t) - * conversion specifier (one of: d i o u x X e E f F g G a A c s p n) - */ - flags = field_width = precision = len_mod = 0; - - /* Flags. only zero-pad flag is supported. */ - if (*fmt == '0') { - flags |= C_SNPRINTF_FLAG_ZERO; - } - - /* Field width */ - while (*fmt >= '0' && *fmt <= '9') { - field_width *= 10; - field_width += *fmt++ - '0'; - } - /* Dynamic field width */ - if (*fmt == '*') { - field_width = va_arg(ap, int); - fmt++; - } - - /* Precision */ - if (*fmt == '.') { - fmt++; - if (*fmt == '*') { - precision = va_arg(ap, int); - fmt++; - } else { - while (*fmt >= '0' && *fmt <= '9') { - precision *= 10; - precision += *fmt++ - '0'; - } - } - } - - /* Length modifier */ - switch (*fmt) { - case 'h': - case 'l': - case 'L': - case 'I': - case 'q': - case 'j': - case 'z': - case 't': - len_mod = *fmt++; - if (*fmt == 'h') { - len_mod = 'H'; - fmt++; - } - if (*fmt == 'l') { - len_mod = 'q'; - fmt++; - } - break; - } - - ch = *fmt++; - if (ch == 's') { - const char *s = va_arg(ap, const char *); /* Always fetch parameter */ - int j; - int pad = field_width - (precision >= 0 ? c_strnlen(s, precision) : 0); - for (j = 0; j < pad; j++) { - C_SNPRINTF_APPEND_CHAR(' '); - } - - /* `s` may be NULL in case of %.*s */ - if (s != NULL) { - /* Ignore negative and 0 precisions */ - for (j = 0; (precision <= 0 || j < precision) && s[j] != '\0'; j++) { - C_SNPRINTF_APPEND_CHAR(s[j]); - } - } - } else if (ch == 'c') { - ch = va_arg(ap, int); /* Always fetch parameter */ - C_SNPRINTF_APPEND_CHAR(ch); - } else if (ch == 'd' && len_mod == 0) { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, int), 10, flags, - field_width); - } else if (ch == 'd' && len_mod == 'l') { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, long), 10, flags, - field_width); -#ifdef SSIZE_MAX - } else if (ch == 'd' && len_mod == 'z') { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, ssize_t), 10, flags, - field_width); -#endif - } else if (ch == 'd' && len_mod == 'q') { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, int64_t), 10, flags, - field_width); - } else if ((ch == 'x' || ch == 'u') && len_mod == 0) { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, unsigned), - ch == 'x' ? 16 : 10, flags, field_width); - } else if ((ch == 'x' || ch == 'u') && len_mod == 'l') { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, unsigned long), - ch == 'x' ? 16 : 10, flags, field_width); - } else if ((ch == 'x' || ch == 'u') && len_mod == 'z') { - i += c_itoa(buf + i, buf_size - i, va_arg(ap, size_t), - ch == 'x' ? 16 : 10, flags, field_width); - } else if (ch == 'p') { - unsigned long num = (unsigned long) va_arg(ap, void *); - C_SNPRINTF_APPEND_CHAR('0'); - C_SNPRINTF_APPEND_CHAR('x'); - i += c_itoa(buf + i, buf_size - i, num, 16, flags, 0); - } else { -#ifndef NO_LIBC - /* - * TODO(lsm): abort is not nice in a library, remove it - * Also, ESP8266 SDK doesn't have it - */ - abort(); -#endif - } - } - } - - /* Zero-terminate the result */ - if (buf_size > 0) { - buf[i < (int) buf_size ? i : (int) buf_size - 1] = '\0'; - } - - return i; -} -#endif - -int c_snprintf(char *buf, size_t buf_size, const char *fmt, ...) { - int result; - va_list ap; - va_start(ap, fmt); - result = c_vsnprintf(buf, buf_size, fmt, ap); - va_end(ap); - return result; -} - -#ifdef _WIN32 -int to_wchar(const char *path, wchar_t *wbuf, size_t wbuf_len) { - int ret; - char buf[MAX_PATH * 2], buf2[MAX_PATH * 2], *p; - - strncpy(buf, path, sizeof(buf)); - buf[sizeof(buf) - 1] = '\0'; - - /* Trim trailing slashes. Leave backslash for paths like "X:\" */ - p = buf + strlen(buf) - 1; - while (p > buf && p[-1] != ':' && (p[0] == '\\' || p[0] == '/')) *p-- = '\0'; - - memset(wbuf, 0, wbuf_len * sizeof(wchar_t)); - ret = MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len); - - /* - * Convert back to Unicode. If doubly-converted string does not match the - * original, something is fishy, reject. - */ - WideCharToMultiByte(CP_UTF8, 0, wbuf, (int) wbuf_len, buf2, sizeof(buf2), - NULL, NULL); - if (strcmp(buf, buf2) != 0) { - wbuf[0] = L'\0'; - ret = 0; - } - - return ret; -} -#endif /* _WIN32 */ - -/* The simplest O(mn) algorithm. Better implementation are GPLed */ -const char *c_strnstr(const char *s, const char *find, size_t slen) { - size_t find_length = strlen(find); - size_t i; - - for (i = 0; i < slen; i++) { - if (i + find_length > slen) { - return NULL; - } - - if (strncmp(&s[i], find, find_length) == 0) { - return &s[i]; - } - } - - return NULL; -} - -#endif /* EXCLUDE_COMMON */ -#ifdef MG_MODULE_LINES -#line 1 "./src/net.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - * - * This software is dual-licensed: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. For the terms of this - * license, see . - * - * You are free to use this software under the terms of the GNU General - * Public License, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * See the GNU General Public License for more details. - * - * Alternatively, you can license this software under a commercial - * license, as set out in . - */ - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/util.h" */ -/* Amalgamated: #include "mongoose/src/dns.h" */ -/* Amalgamated: #include "mongoose/src/resolv.h" */ -/* Amalgamated: #include "common/cs_time.h" */ - -#define MG_MAX_HOST_LEN 200 - -#define MG_COPY_COMMON_CONNECTION_OPTIONS(dst, src) \ - memcpy(dst, src, sizeof(*dst)); - -/* Which flags can be pre-set by the user at connection creation time. */ -#define _MG_ALLOWED_CONNECT_FLAGS_MASK \ - (MG_F_USER_1 | MG_F_USER_2 | MG_F_USER_3 | MG_F_USER_4 | MG_F_USER_5 | \ - MG_F_USER_6 | MG_F_WEBSOCKET_NO_DEFRAG) -/* Which flags should be modifiable by user's callbacks. */ -#define _MG_CALLBACK_MODIFIABLE_FLAGS_MASK \ - (MG_F_USER_1 | MG_F_USER_2 | MG_F_USER_3 | MG_F_USER_4 | MG_F_USER_5 | \ - MG_F_USER_6 | MG_F_WEBSOCKET_NO_DEFRAG | MG_F_SEND_AND_CLOSE | \ - MG_F_CLOSE_IMMEDIATELY | MG_F_IS_WEBSOCKET | MG_F_DELETE_CHUNK) - -#ifndef intptr_t -#define intptr_t long -#endif - -int mg_is_error(int n); -void mg_set_non_blocking_mode(sock_t sock); - -extern void mg_ev_mgr_init(struct mg_mgr *mgr); -extern void mg_ev_mgr_free(struct mg_mgr *mgr); -extern void mg_ev_mgr_add_conn(struct mg_connection *nc); -extern void mg_ev_mgr_remove_conn(struct mg_connection *nc); - -MG_INTERNAL void mg_add_conn(struct mg_mgr *mgr, struct mg_connection *c) { - DBG(("%p %p", mgr, c)); - c->mgr = mgr; - c->next = mgr->active_connections; - mgr->active_connections = c; - c->prev = NULL; - if (c->next != NULL) c->next->prev = c; - mg_ev_mgr_add_conn(c); -} - -MG_INTERNAL void mg_remove_conn(struct mg_connection *conn) { - if (conn->prev == NULL) conn->mgr->active_connections = conn->next; - if (conn->prev) conn->prev->next = conn->next; - if (conn->next) conn->next->prev = conn->prev; - mg_ev_mgr_remove_conn(conn); -} - -MG_INTERNAL void mg_call(struct mg_connection *nc, - mg_event_handler_t ev_handler, int ev, void *ev_data) { - if (ev_handler == NULL) { - /* - * If protocol handler is specified, call it. Otherwise, call user-specified - * event handler. - */ - ev_handler = nc->proto_handler ? nc->proto_handler : nc->handler; - } - DBG(("%p %s ev=%d ev_data=%p flags=%lu rmbl=%d smbl=%d", nc, - ev_handler == nc->handler ? "user" : "proto", ev, ev_data, nc->flags, - (int) nc->recv_mbuf.len, (int) nc->send_mbuf.len)); - -#if !defined(NO_LIBC) && !defined(MG_DISABLE_HEXDUMP) - /* LCOV_EXCL_START */ - if (nc->mgr->hexdump_file != NULL && ev != MG_EV_POLL && - ev != MG_EV_SEND /* handled separately */) { - if (ev == MG_EV_RECV) { - mg_hexdump_connection(nc, nc->mgr->hexdump_file, nc->recv_mbuf.buf, - *(int *) ev_data, ev); - } else { - mg_hexdump_connection(nc, nc->mgr->hexdump_file, NULL, 0, ev); - } - } -/* LCOV_EXCL_STOP */ -#endif - if (ev_handler != NULL) { - unsigned long flags_before = nc->flags; - size_t recv_mbuf_before = nc->recv_mbuf.len, recved; - ev_handler(nc, ev, ev_data); - recved = (recv_mbuf_before - nc->recv_mbuf.len); - /* Prevent user handler from fiddling with system flags. */ - if (ev_handler == nc->handler && nc->flags != flags_before) { - nc->flags = (flags_before & ~_MG_CALLBACK_MODIFIABLE_FLAGS_MASK) | - (nc->flags & _MG_CALLBACK_MODIFIABLE_FLAGS_MASK); - } - if (recved > 0 && !(nc->flags & MG_F_UDP)) { - mg_if_recved(nc, recved); - } - } - DBG(("%p after %s flags=%lu rmbl=%d smbl=%d", nc, - ev_handler == nc->handler ? "user" : "proto", nc->flags, - (int) nc->recv_mbuf.len, (int) nc->send_mbuf.len)); -} - -void mg_if_timer(struct mg_connection *c, double now) { - if (c->ev_timer_time > 0 && now >= c->ev_timer_time) { - double old_value = c->ev_timer_time; - mg_call(c, NULL, MG_EV_TIMER, &now); - /* - * To prevent timer firing all the time, reset the timer after delivery. - * However, in case user sets it to new value, do not reset. - */ - if (c->ev_timer_time == old_value) { - c->ev_timer_time = 0; - } - } -} - -void mg_if_poll(struct mg_connection *nc, time_t now) { - if (nc->ssl == NULL || (nc->flags & MG_F_SSL_HANDSHAKE_DONE)) { - mg_call(nc, NULL, MG_EV_POLL, &now); - } -} - -static void mg_destroy_conn(struct mg_connection *conn) { - if (conn->proto_data != NULL && conn->proto_data_destructor != NULL) { - conn->proto_data_destructor(conn->proto_data); - } - mg_if_destroy_conn(conn); -#ifdef MG_ENABLE_SSL - if (conn->ssl != NULL) SSL_free(conn->ssl); - if (conn->ssl_ctx != NULL) SSL_CTX_free(conn->ssl_ctx); -#endif - mbuf_free(&conn->recv_mbuf); - mbuf_free(&conn->send_mbuf); - - memset(conn, 0, sizeof(*conn)); - MG_FREE(conn); -} - -void mg_close_conn(struct mg_connection *conn) { - DBG(("%p %lu", conn, conn->flags)); - mg_call(conn, NULL, MG_EV_CLOSE, NULL); - mg_remove_conn(conn); - mg_destroy_conn(conn); -} - -void mg_mgr_init(struct mg_mgr *m, void *user_data) { - memset(m, 0, sizeof(*m)); -#ifndef MG_DISABLE_SOCKETPAIR - m->ctl[0] = m->ctl[1] = INVALID_SOCKET; -#endif - m->user_data = user_data; - -#ifdef _WIN32 - { - WSADATA data; - WSAStartup(MAKEWORD(2, 2), &data); - } -#elif defined(__unix__) - /* Ignore SIGPIPE signal, so if client cancels the request, it - * won't kill the whole process. */ - signal(SIGPIPE, SIG_IGN); -#endif - -#ifdef MG_ENABLE_SSL - { - static int init_done; - if (!init_done) { - SSL_library_init(); - init_done++; - } - } -#endif - - mg_ev_mgr_init(m); - DBG(("==================================")); - DBG(("init mgr=%p", m)); -} - -#ifdef MG_ENABLE_JAVASCRIPT -static enum v7_err mg_send_js(struct v7 *v7, v7_val_t *res) { - v7_val_t arg0 = v7_arg(v7, 0); - v7_val_t arg1 = v7_arg(v7, 1); - struct mg_connection *c = (struct mg_connection *) v7_get_ptr(arg0); - size_t len = 0; - - if (v7_is_string(arg1)) { - const char *data = v7_get_string(v7, &arg1, &len); - mg_send(c, data, len); - } - - *res = v7_mk_number(len); - - return V7_OK; -} - -enum v7_err mg_enable_javascript(struct mg_mgr *m, struct v7 *v7, - const char *init_file_name) { - v7_val_t v; - m->v7 = v7; - v7_set_method(v7, v7_get_global(v7), "mg_send", mg_send_js); - return v7_exec_file(v7, init_file_name, &v); -} -#endif - -void mg_mgr_free(struct mg_mgr *m) { - struct mg_connection *conn, *tmp_conn; - - DBG(("%p", m)); - if (m == NULL) return; - /* Do one last poll, see https://github.com/cesanta/mongoose/issues/286 */ - mg_mgr_poll(m, 0); - -#ifndef MG_DISABLE_SOCKETPAIR - if (m->ctl[0] != INVALID_SOCKET) closesocket(m->ctl[0]); - if (m->ctl[1] != INVALID_SOCKET) closesocket(m->ctl[1]); - m->ctl[0] = m->ctl[1] = INVALID_SOCKET; -#endif - - for (conn = m->active_connections; conn != NULL; conn = tmp_conn) { - tmp_conn = conn->next; - mg_close_conn(conn); - } - - mg_ev_mgr_free(m); -} - -int mg_vprintf(struct mg_connection *nc, const char *fmt, va_list ap) { - char mem[MG_VPRINTF_BUFFER_SIZE], *buf = mem; - int len; - - if ((len = mg_avprintf(&buf, sizeof(mem), fmt, ap)) > 0) { - mg_send(nc, buf, len); - } - if (buf != mem && buf != NULL) { - MG_FREE(buf); /* LCOV_EXCL_LINE */ - } /* LCOV_EXCL_LINE */ - - return len; -} - -int mg_printf(struct mg_connection *conn, const char *fmt, ...) { - int len; - va_list ap; - va_start(ap, fmt); - len = mg_vprintf(conn, fmt, ap); - va_end(ap); - return len; -} - -#ifndef MG_DISABLE_SYNC_RESOLVER -/* TODO(lsm): use non-blocking resolver */ -static int mg_resolve2(const char *host, struct in_addr *ina) { -#ifdef MG_ENABLE_GETADDRINFO - int rv = 0; - struct addrinfo hints, *servinfo, *p; - struct sockaddr_in *h = NULL; - memset(&hints, 0, sizeof hints); - hints.ai_family = AF_INET; - hints.ai_socktype = SOCK_STREAM; - if ((rv = getaddrinfo(host, NULL, NULL, &servinfo)) != 0) { - DBG(("getaddrinfo(%s) failed: %s", host, strerror(errno))); - return 0; - } - for (p = servinfo; p != NULL; p = p->ai_next) { - memcpy(&h, &p->ai_addr, sizeof(struct sockaddr_in *)); - memcpy(ina, &h->sin_addr, sizeof(ina)); - } - freeaddrinfo(servinfo); - return 1; -#else - struct hostent *he; - if ((he = gethostbyname(host)) == NULL) { - DBG(("gethostbyname(%s) failed: %s", host, strerror(errno))); - } else { - memcpy(ina, he->h_addr_list[0], sizeof(*ina)); - return 1; - } - return 0; -#endif /* MG_ENABLE_GETADDRINFO */ -} - -int mg_resolve(const char *host, char *buf, size_t n) { - struct in_addr ad; - return mg_resolve2(host, &ad) ? snprintf(buf, n, "%s", inet_ntoa(ad)) : 0; -} -#endif /* MG_DISABLE_SYNC_RESOLVER */ - -MG_INTERNAL struct mg_connection *mg_create_connection_base( - struct mg_mgr *mgr, mg_event_handler_t callback, - struct mg_add_sock_opts opts) { - struct mg_connection *conn; - - if ((conn = (struct mg_connection *) MG_CALLOC(1, sizeof(*conn))) != NULL) { - conn->sock = INVALID_SOCKET; - conn->handler = callback; - conn->mgr = mgr; - conn->last_io_time = mg_time(); - conn->flags = opts.flags & _MG_ALLOWED_CONNECT_FLAGS_MASK; - conn->user_data = opts.user_data; - /* - * SIZE_MAX is defined as a long long constant in - * system headers on some platforms and so it - * doesn't compile with pedantic ansi flags. - */ - conn->recv_mbuf_limit = ~0; - } else { - MG_SET_PTRPTR(opts.error_string, "failed to create connection"); - } - - return conn; -} - -MG_INTERNAL struct mg_connection *mg_create_connection( - struct mg_mgr *mgr, mg_event_handler_t callback, - struct mg_add_sock_opts opts) { - struct mg_connection *conn = mg_create_connection_base(mgr, callback, opts); - - if (!mg_if_create_conn(conn)) { - MG_FREE(conn); - conn = NULL; - MG_SET_PTRPTR(opts.error_string, "failed to init connection"); - } - - return conn; -} - -/* - * Address format: [PROTO://][HOST]:PORT - * - * HOST could be IPv4/IPv6 address or a host name. - * `host` is a destination buffer to hold parsed HOST part. Shoud be at least - * MG_MAX_HOST_LEN bytes long. - * `proto` is a returned socket type, either SOCK_STREAM or SOCK_DGRAM - * - * Return: - * -1 on parse error - * 0 if HOST needs DNS lookup - * >0 length of the address string - */ -MG_INTERNAL int mg_parse_address(const char *str, union socket_address *sa, - int *proto, char *host, size_t host_len) { - unsigned int a, b, c, d, port = 0; - int ch, len = 0; -#ifdef MG_ENABLE_IPV6 - char buf[100]; -#endif - - /* - * MacOS needs that. If we do not zero it, subsequent bind() will fail. - * Also, all-zeroes in the socket address means binding to all addresses - * for both IPv4 and IPv6 (INADDR_ANY and IN6ADDR_ANY_INIT). - */ - memset(sa, 0, sizeof(*sa)); - sa->sin.sin_family = AF_INET; - - *proto = SOCK_STREAM; - - if (strncmp(str, "udp://", 6) == 0) { - str += 6; - *proto = SOCK_DGRAM; - } else if (strncmp(str, "tcp://", 6) == 0) { - str += 6; - } - - if (sscanf(str, "%u.%u.%u.%u:%u%n", &a, &b, &c, &d, &port, &len) == 5) { - /* Bind to a specific IPv4 address, e.g. 192.168.1.5:8080 */ - sa->sin.sin_addr.s_addr = - htonl(((uint32_t) a << 24) | ((uint32_t) b << 16) | c << 8 | d); - sa->sin.sin_port = htons((uint16_t) port); -#ifdef MG_ENABLE_IPV6 - } else if (sscanf(str, "[%99[^]]]:%u%n", buf, &port, &len) == 2 && - inet_pton(AF_INET6, buf, &sa->sin6.sin6_addr)) { - /* IPv6 address, e.g. [3ffe:2a00:100:7031::1]:8080 */ - sa->sin6.sin6_family = AF_INET6; - sa->sin.sin_port = htons((uint16_t) port); -#endif -#ifndef MG_DISABLE_RESOLVER - } else if (strlen(str) < host_len && - sscanf(str, "%[^ :]:%u%n", host, &port, &len) == 2) { - sa->sin.sin_port = htons((uint16_t) port); - if (mg_resolve_from_hosts_file(host, sa) != 0) { - return 0; - } -#endif - } else if (sscanf(str, ":%u%n", &port, &len) == 1 || - sscanf(str, "%u%n", &port, &len) == 1) { - /* If only port is specified, bind to IPv4, INADDR_ANY */ - sa->sin.sin_port = htons((uint16_t) port); - } else { - return -1; - } - - ch = str[len]; /* Character that follows the address */ - return port < 0xffffUL && (ch == '\0' || ch == ',' || isspace(ch)) ? len : -1; -} - -#ifdef MG_ENABLE_SSL -/* - * Certificate generation script is at - * https://github.com/cesanta/mongoose/blob/master/scripts/generate_ssl_certificates.sh - */ - -#ifndef MG_DISABLE_PFS -/* - * Cipher suite options used for TLS negotiation. - * https://wiki.mozilla.org/Security/Server_Side_TLS#Recommended_configurations - */ -static const char mg_s_cipher_list[] = -#if defined(MG_SSL_CRYPTO_MODERN) - "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:" - "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:" - "DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:" - "ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:" - "ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:" - "ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:" - "DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:" - "DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:" - "!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK" -#elif defined(MG_SSL_CRYPTO_OLD) - "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:" - "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:" - "DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:" - "ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:" - "ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:" - "ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:" - "DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:" - "DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:" - "ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:" - "AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:DES-CBC3-SHA:" - "HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:" - "!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA" -#else /* Default - intermediate. */ - "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:" - "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:" - "DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:" - "ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:" - "ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:" - "ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:" - "DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:" - "DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:" - "AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:" - "DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:" - "!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA" -#endif - ; - -/* - * Default DH params for PFS cipher negotiation. This is a 2048-bit group. - * Will be used if none are provided by the user in the certificate file. - */ -static const char mg_s_default_dh_params[] = - "\ ------BEGIN DH PARAMETERS-----\n\ -MIIBCAKCAQEAlvbgD/qh9znWIlGFcV0zdltD7rq8FeShIqIhkQ0C7hYFThrBvF2E\n\ -Z9bmgaP+sfQwGpVlv9mtaWjvERbu6mEG7JTkgmVUJrUt/wiRzwTaCXBqZkdUO8Tq\n\ -+E6VOEQAilstG90ikN1Tfo+K6+X68XkRUIlgawBTKuvKVwBhuvlqTGerOtnXWnrt\n\ -ym//hd3cd5PBYGBix0i7oR4xdghvfR2WLVu0LgdThTBb6XP7gLd19cQ1JuBtAajZ\n\ -wMuPn7qlUkEFDIkAZy59/Hue/H2Q2vU/JsvVhHWCQBL4F1ofEAt50il6ZxR1QfFK\n\ -9VGKDC4oOgm9DlxwwBoC2FjqmvQlqVV3kwIBAg==\n\ ------END DH PARAMETERS-----\n"; -#endif - -static int mg_use_ca_cert(SSL_CTX *ctx, const char *cert) { - if (ctx == NULL) { - return -1; - } else if (cert == NULL || cert[0] == '\0') { - return 0; - } - SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, 0); - return SSL_CTX_load_verify_locations(ctx, cert, NULL) == 1 ? 0 : -2; -} - -static int mg_use_cert(SSL_CTX *ctx, const char *pem_file) { - if (ctx == NULL) { - return -1; - } else if (pem_file == NULL || pem_file[0] == '\0') { - return 0; - } else if (SSL_CTX_use_certificate_file(ctx, pem_file, 1) == 0 || - SSL_CTX_use_PrivateKey_file(ctx, pem_file, 1) == 0) { - return -2; - } else { -#ifndef MG_DISABLE_PFS - BIO *bio = NULL; - DH *dh = NULL; - - /* Try to read DH parameters from the cert/key file. */ - bio = BIO_new_file(pem_file, "r"); - if (bio != NULL) { - dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); - BIO_free(bio); - } - /* - * If there are no DH params in the file, fall back to hard-coded ones. - * Not ideal, but better than nothing. - */ - if (dh == NULL) { - bio = BIO_new_mem_buf((void *) mg_s_default_dh_params, -1); - dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); - BIO_free(bio); - } - if (dh != NULL) { - SSL_CTX_set_tmp_dh(ctx, dh); - SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE); - DH_free(dh); - } -#endif - SSL_CTX_set_mode(ctx, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER); - SSL_CTX_use_certificate_chain_file(ctx, pem_file); - return 0; - } -} - -/* - * Turn the connection into SSL mode. - * `cert` is the certificate file in PEM format. For listening connections, - * certificate file must contain private key and server certificate, - * concatenated. It may also contain DH params - these will be used for more - * secure key exchange. `ca_cert` is a certificate authority (CA) PEM file, and - * it is optional (can be set to NULL). If `ca_cert` is non-NULL, then - * the connection is so-called two-way-SSL: other peer's certificate is - * checked against the `ca_cert`. - * - * Handy OpenSSL command to generate test self-signed certificate: - * - * openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 999 - * - * Return NULL on success, or error message on failure. - */ -const char *mg_set_ssl(struct mg_connection *nc, const char *cert, - const char *ca_cert) { - const char *result = NULL; - DBG(("%p %s %s", nc, (cert ? cert : ""), (ca_cert ? ca_cert : ""))); - - if (nc->flags & MG_F_UDP) { - return "SSL for UDP is not supported"; - } - - if (nc->ssl != NULL) { - SSL_free(nc->ssl); - nc->ssl = NULL; - } - if (nc->ssl_ctx != NULL) { - SSL_CTX_free(nc->ssl_ctx); - nc->ssl_ctx = NULL; - } - - if ((nc->flags & MG_F_LISTENING) && - (nc->ssl_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL) { - result = "SSL_CTX_new() failed"; - } else if (!(nc->flags & MG_F_LISTENING) && - (nc->ssl_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL) { - result = "SSL_CTX_new() failed"; - } else if (mg_use_cert(nc->ssl_ctx, cert) != 0) { - result = "Invalid ssl cert"; - } else if (mg_use_ca_cert(nc->ssl_ctx, ca_cert) != 0) { - result = "Invalid CA cert"; - } else if (!(nc->flags & MG_F_LISTENING) && - (nc->ssl = SSL_new(nc->ssl_ctx)) == NULL) { - result = "SSL_new() failed"; - } else if (!(nc->flags & MG_F_LISTENING) && nc->sock != INVALID_SOCKET) { - /* - * Socket is open here only if we are connecting to IP address - * and does not open if we are connecting using async DNS resolver - */ - SSL_set_fd(nc->ssl, nc->sock); - } - -#ifndef MG_DISABLE_PFS - SSL_CTX_set_cipher_list(nc->ssl_ctx, mg_s_cipher_list); -#endif - return result; -} -#endif /* MG_ENABLE_SSL */ - -struct mg_connection *mg_if_accept_new_conn(struct mg_connection *lc) { - struct mg_add_sock_opts opts; - struct mg_connection *nc; - memset(&opts, 0, sizeof(opts)); - nc = mg_create_connection(lc->mgr, lc->handler, opts); - if (nc == NULL) return NULL; - nc->listener = lc; - nc->proto_handler = lc->proto_handler; - nc->user_data = lc->user_data; - nc->recv_mbuf_limit = lc->recv_mbuf_limit; - mg_add_conn(nc->mgr, nc); - DBG(("%p %p %d %d, %p %p", lc, nc, nc->sock, (int) nc->flags, lc->ssl_ctx, - nc->ssl)); - return nc; -} - -void mg_if_accept_tcp_cb(struct mg_connection *nc, union socket_address *sa, - size_t sa_len) { - (void) sa_len; - nc->sa = *sa; - mg_call(nc, NULL, MG_EV_ACCEPT, &nc->sa); -} - -void mg_send(struct mg_connection *nc, const void *buf, int len) { - nc->last_io_time = mg_time(); - if (nc->flags & MG_F_UDP) { - mg_if_udp_send(nc, buf, len); - } else { - mg_if_tcp_send(nc, buf, len); - } -#if !defined(NO_LIBC) && !defined(MG_DISABLE_HEXDUMP) - if (nc->mgr && nc->mgr->hexdump_file != NULL) { - mg_hexdump_connection(nc, nc->mgr->hexdump_file, buf, len, MG_EV_SEND); - } -#endif -} - -void mg_if_sent_cb(struct mg_connection *nc, int num_sent) { - if (num_sent < 0) { - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - } - mg_call(nc, NULL, MG_EV_SEND, &num_sent); -} - -static void mg_recv_common(struct mg_connection *nc, void *buf, int len) { - DBG(("%p %d %u", nc, len, (unsigned int) nc->recv_mbuf.len)); - if (nc->flags & MG_F_CLOSE_IMMEDIATELY) { - DBG(("%p discarded %d bytes", nc, len)); - /* - * This connection will not survive next poll. Do not deliver events, - * send data to /dev/null without acking. - */ - MG_FREE(buf); - return; - } - nc->last_io_time = mg_time(); - if (nc->recv_mbuf.len == 0) { - /* Adopt buf as recv_mbuf's backing store. */ - mbuf_free(&nc->recv_mbuf); - nc->recv_mbuf.buf = (char *) buf; - nc->recv_mbuf.size = nc->recv_mbuf.len = len; - } else { - mbuf_append(&nc->recv_mbuf, buf, len); - MG_FREE(buf); - } - mg_call(nc, NULL, MG_EV_RECV, &len); -} - -void mg_if_recv_tcp_cb(struct mg_connection *nc, void *buf, int len) { - mg_recv_common(nc, buf, len); -} - -void mg_if_recv_udp_cb(struct mg_connection *nc, void *buf, int len, - union socket_address *sa, size_t sa_len) { - assert(nc->flags & MG_F_UDP); - DBG(("%p %u", nc, (unsigned int) len)); - if (nc->flags & MG_F_LISTENING) { - struct mg_connection *lc = nc; - /* - * Do we have an existing connection for this source? - * This is very inefficient for long connection lists. - */ - for (nc = mg_next(lc->mgr, NULL); nc != NULL; nc = mg_next(lc->mgr, nc)) { - if (memcmp(&nc->sa.sa, &sa->sa, sa_len) == 0 && nc->listener == lc) { - break; - } - } - if (nc == NULL) { - struct mg_add_sock_opts opts; - memset(&opts, 0, sizeof(opts)); - /* Create fake connection w/out sock initialization */ - nc = mg_create_connection_base(lc->mgr, lc->handler, opts); - if (nc != NULL) { - nc->sock = lc->sock; - nc->listener = lc; - nc->sa = *sa; - nc->proto_handler = lc->proto_handler; - nc->user_data = lc->user_data; - nc->recv_mbuf_limit = lc->recv_mbuf_limit; - nc->flags = MG_F_UDP; - mg_add_conn(lc->mgr, nc); - mg_call(nc, NULL, MG_EV_ACCEPT, &nc->sa); - } else { - DBG(("OOM")); - /* No return here, we still need to drop on the floor */ - } - } - } - if (nc != NULL) { - mg_recv_common(nc, buf, len); - } else { - /* Drop on the floor. */ - MG_FREE(buf); - mg_if_recved(nc, len); - } -} - -/* - * Schedules an async connect for a resolved address and proto. - * Called from two places: `mg_connect_opt()` and from async resolver. - * When called from the async resolver, it must trigger `MG_EV_CONNECT` event - * with a failure flag to indicate connection failure. - */ -MG_INTERNAL struct mg_connection *mg_do_connect(struct mg_connection *nc, - int proto, - union socket_address *sa) { - DBG(("%p %s://%s:%hu", nc, proto == SOCK_DGRAM ? "udp" : "tcp", - inet_ntoa(sa->sin.sin_addr), ntohs(sa->sin.sin_port))); - - nc->flags |= MG_F_CONNECTING; - if (proto == SOCK_DGRAM) { - mg_if_connect_udp(nc); - } else { - mg_if_connect_tcp(nc, sa); - } - mg_add_conn(nc->mgr, nc); - return nc; -} - -void mg_if_connect_cb(struct mg_connection *nc, int err) { - DBG(("%p connect, err=%d", nc, err)); - nc->flags &= ~MG_F_CONNECTING; - if (err != 0) { - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - } - mg_call(nc, NULL, MG_EV_CONNECT, &err); -} - -#ifndef MG_DISABLE_RESOLVER -/* - * Callback for the async resolver on mg_connect_opt() call. - * Main task of this function is to trigger MG_EV_CONNECT event with - * either failure (and dealloc the connection) - * or success (and proceed with connect() - */ -static void resolve_cb(struct mg_dns_message *msg, void *data, - enum mg_resolve_err e) { - struct mg_connection *nc = (struct mg_connection *) data; - int i; - int failure = -1; - - nc->flags &= ~MG_F_RESOLVING; - if (msg != NULL) { - /* - * Take the first DNS A answer and run... - */ - for (i = 0; i < msg->num_answers; i++) { - if (msg->answers[i].rtype == MG_DNS_A_RECORD) { - /* - * Async resolver guarantees that there is at least one answer. - * TODO(lsm): handle IPv6 answers too - */ - mg_dns_parse_record_data(msg, &msg->answers[i], &nc->sa.sin.sin_addr, - 4); - mg_do_connect(nc, nc->flags & MG_F_UDP ? SOCK_DGRAM : SOCK_STREAM, - &nc->sa); - return; - } - } - } - - if (e == MG_RESOLVE_TIMEOUT) { - double now = mg_time(); - mg_call(nc, NULL, MG_EV_TIMER, &now); - } - - /* - * If we get there was no MG_DNS_A_RECORD in the answer - */ - mg_call(nc, NULL, MG_EV_CONNECT, &failure); - mg_call(nc, NULL, MG_EV_CLOSE, NULL); - mg_destroy_conn(nc); -} -#endif - -struct mg_connection *mg_connect(struct mg_mgr *mgr, const char *address, - mg_event_handler_t callback) { - struct mg_connect_opts opts; - memset(&opts, 0, sizeof(opts)); - return mg_connect_opt(mgr, address, callback, opts); -} - -struct mg_connection *mg_connect_opt(struct mg_mgr *mgr, const char *address, - mg_event_handler_t callback, - struct mg_connect_opts opts) { - struct mg_connection *nc = NULL; - int proto, rc; - struct mg_add_sock_opts add_sock_opts; - char host[MG_MAX_HOST_LEN]; - - MG_COPY_COMMON_CONNECTION_OPTIONS(&add_sock_opts, &opts); - - if ((nc = mg_create_connection(mgr, callback, add_sock_opts)) == NULL) { - return NULL; - } else if ((rc = mg_parse_address(address, &nc->sa, &proto, host, - sizeof(host))) < 0) { - /* Address is malformed */ - MG_SET_PTRPTR(opts.error_string, "cannot parse address"); - mg_destroy_conn(nc); - return NULL; - } - nc->flags |= opts.flags & _MG_ALLOWED_CONNECT_FLAGS_MASK; - nc->flags |= (proto == SOCK_DGRAM) ? MG_F_UDP : 0; - nc->user_data = opts.user_data; - -#ifdef MG_ENABLE_SSL - if (opts.ssl_cert != NULL || opts.ssl_ca_cert != NULL) { - const char *err = mg_set_ssl(nc, opts.ssl_cert, opts.ssl_ca_cert); - if (err != NULL) { - MG_SET_PTRPTR(opts.error_string, err); - mg_destroy_conn(nc); - return NULL; - } - if (opts.ssl_ca_cert != NULL && (opts.ssl_server_name == NULL || - strcmp(opts.ssl_server_name, "*") != 0)) { - if (opts.ssl_server_name == NULL) opts.ssl_server_name = host; -#ifdef SSL_KRYPTON - SSL_CTX_kr_set_verify_name(nc->ssl_ctx, opts.ssl_server_name); -#else - /* TODO(rojer): Implement server name verification on OpenSSL. */ - MG_SET_PTRPTR(opts.error_string, - "Server name verification requested but is not supported"); - mg_destroy_conn(nc); - return NULL; -#endif /* SSL_KRYPTON */ - } - } -#endif /* MG_ENABLE_SSL */ - - if (rc == 0) { -#ifndef MG_DISABLE_RESOLVER - /* - * DNS resolution is required for host. - * mg_parse_address() fills port in nc->sa, which we pass to resolve_cb() - */ - struct mg_connection *dns_conn = NULL; - struct mg_resolve_async_opts o; - memset(&o, 0, sizeof(o)); - o.dns_conn = &dns_conn; - if (mg_resolve_async_opt(nc->mgr, host, MG_DNS_A_RECORD, resolve_cb, nc, - o) != 0) { - MG_SET_PTRPTR(opts.error_string, "cannot schedule DNS lookup"); - mg_destroy_conn(nc); - return NULL; - } - nc->priv_2 = dns_conn; - nc->flags |= MG_F_RESOLVING; - return nc; -#else - MG_SET_PTRPTR(opts.error_string, "Resolver is disabled"); - mg_destroy_conn(nc); - return NULL; -#endif - } else { - /* Address is parsed and resolved to IP. proceed with connect() */ - return mg_do_connect(nc, proto, &nc->sa); - } -} - -struct mg_connection *mg_bind(struct mg_mgr *srv, const char *address, - mg_event_handler_t event_handler) { - struct mg_bind_opts opts; - memset(&opts, 0, sizeof(opts)); - return mg_bind_opt(srv, address, event_handler, opts); -} - -struct mg_connection *mg_bind_opt(struct mg_mgr *mgr, const char *address, - mg_event_handler_t callback, - struct mg_bind_opts opts) { - union socket_address sa; - struct mg_connection *nc = NULL; - int proto, rc; - struct mg_add_sock_opts add_sock_opts; - char host[MG_MAX_HOST_LEN]; - - MG_COPY_COMMON_CONNECTION_OPTIONS(&add_sock_opts, &opts); - - if (mg_parse_address(address, &sa, &proto, host, sizeof(host)) <= 0) { - MG_SET_PTRPTR(opts.error_string, "cannot parse address"); - return NULL; - } - - nc = mg_create_connection(mgr, callback, add_sock_opts); - if (nc == NULL) { - return NULL; - } - - nc->sa = sa; - nc->flags |= MG_F_LISTENING; - if (proto == SOCK_DGRAM) { - nc->flags |= MG_F_UDP; - rc = mg_if_listen_udp(nc, &nc->sa); - } else { - rc = mg_if_listen_tcp(nc, &nc->sa); - } - if (rc != 0) { - DBG(("Failed to open listener: %d", rc)); - MG_SET_PTRPTR(opts.error_string, "failed to open listener"); - mg_destroy_conn(nc); - return NULL; - } -#ifdef MG_ENABLE_SSL - if (opts.ssl_cert != NULL || opts.ssl_ca_cert != NULL) { - const char *err = mg_set_ssl(nc, opts.ssl_cert, opts.ssl_ca_cert); - if (err != NULL) { - MG_SET_PTRPTR(opts.error_string, err); - mg_destroy_conn(nc); - return NULL; - } - } -#endif /* MG_ENABLE_SSL */ - mg_add_conn(nc->mgr, nc); - - return nc; -} - -struct mg_connection *mg_next(struct mg_mgr *s, struct mg_connection *conn) { - return conn == NULL ? s->active_connections : conn->next; -} - -#ifndef MG_DISABLE_SOCKETPAIR -void mg_broadcast(struct mg_mgr *mgr, mg_event_handler_t cb, void *data, - size_t len) { - struct ctl_msg ctl_msg; - - /* - * Mongoose manager has a socketpair, `struct mg_mgr::ctl`, - * where `mg_broadcast()` pushes the message. - * `mg_mgr_poll()` wakes up, reads a message from the socket pair, and calls - * specified callback for each connection. Thus the callback function executes - * in event manager thread. - */ - if (mgr->ctl[0] != INVALID_SOCKET && data != NULL && - len < sizeof(ctl_msg.message)) { - size_t dummy; - - ctl_msg.callback = cb; - memcpy(ctl_msg.message, data, len); - dummy = MG_SEND_FUNC(mgr->ctl[0], (char *) &ctl_msg, - offsetof(struct ctl_msg, message) + len, 0); - dummy = MG_RECV_FUNC(mgr->ctl[0], (char *) &len, 1, 0); - (void) dummy; /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509 */ - } -} -#endif /* MG_DISABLE_SOCKETPAIR */ - -static int isbyte(int n) { - return n >= 0 && n <= 255; -} - -static int parse_net(const char *spec, uint32_t *net, uint32_t *mask) { - int n, a, b, c, d, slash = 32, len = 0; - - if ((sscanf(spec, "%d.%d.%d.%d/%d%n", &a, &b, &c, &d, &slash, &n) == 5 || - sscanf(spec, "%d.%d.%d.%d%n", &a, &b, &c, &d, &n) == 4) && - isbyte(a) && isbyte(b) && isbyte(c) && isbyte(d) && slash >= 0 && - slash < 33) { - len = n; - *net = - ((uint32_t) a << 24) | ((uint32_t) b << 16) | ((uint32_t) c << 8) | d; - *mask = slash ? 0xffffffffU << (32 - slash) : 0; - } - - return len; -} - -int mg_check_ip_acl(const char *acl, uint32_t remote_ip) { - int allowed, flag; - uint32_t net, mask; - struct mg_str vec; - - /* If any ACL is set, deny by default */ - allowed = (acl == NULL || *acl == '\0') ? '+' : '-'; - - while ((acl = mg_next_comma_list_entry(acl, &vec, NULL)) != NULL) { - flag = vec.p[0]; - if ((flag != '+' && flag != '-') || - parse_net(&vec.p[1], &net, &mask) == 0) { - return -1; - } - - if (net == (remote_ip & mask)) { - allowed = flag; - } - } - - DBG(("%08x %c", remote_ip, allowed)); - return allowed == '+'; -} - -/* Move data from one connection to another */ -void mg_forward(struct mg_connection *from, struct mg_connection *to) { - mg_send(to, from->recv_mbuf.buf, from->recv_mbuf.len); - mbuf_remove(&from->recv_mbuf, from->recv_mbuf.len); -} - -double mg_set_timer(struct mg_connection *c, double timestamp) { - double result = c->ev_timer_time; - c->ev_timer_time = timestamp; - /* - * If this connection is resolving, it's not in the list of active - * connections, so not processed yet. It has a DNS resolver connection - * linked to it. Set up a timer for the DNS connection. - */ - DBG(("%p %p %d -> %lu", c, c->priv_2, c->flags & MG_F_RESOLVING, - (unsigned long) timestamp)); - if ((c->flags & MG_F_RESOLVING) && c->priv_2 != NULL) { - ((struct mg_connection *) c->priv_2)->ev_timer_time = timestamp; - } - return result; -} - -struct mg_connection *mg_add_sock_opt(struct mg_mgr *s, sock_t sock, - mg_event_handler_t callback, - struct mg_add_sock_opts opts) { - struct mg_connection *nc = mg_create_connection_base(s, callback, opts); - if (nc != NULL) { - mg_sock_set(nc, sock); - mg_add_conn(nc->mgr, nc); - } - return nc; -} - -struct mg_connection *mg_add_sock(struct mg_mgr *s, sock_t sock, - mg_event_handler_t callback) { - struct mg_add_sock_opts opts; - memset(&opts, 0, sizeof(opts)); - return mg_add_sock_opt(s, sock, callback, opts); -} - -double mg_time() { - return cs_time(); -} -#ifdef MG_MODULE_LINES -#line 1 "./src/net_if_socket.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#ifndef MG_DISABLE_SOCKET_IF - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/util.h" */ - -#define MG_TCP_RECV_BUFFER_SIZE 1024 -#define MG_UDP_RECV_BUFFER_SIZE 1500 - -static sock_t mg_open_listening_socket(union socket_address *sa, int proto); -#ifdef MG_ENABLE_SSL -static void mg_ssl_begin(struct mg_connection *nc); -static int mg_ssl_err(struct mg_connection *conn, int res); -#endif - -void mg_set_non_blocking_mode(sock_t sock) { -#ifdef _WIN32 - unsigned long on = 1; - ioctlsocket(sock, FIONBIO, &on); -#elif defined(MG_SOCKET_SIMPLELINK) - SlSockNonblocking_t opt; - opt.NonblockingEnabled = 1; - sl_SetSockOpt(sock, SL_SOL_SOCKET, SL_SO_NONBLOCKING, &opt, sizeof(opt)); -#else - int flags = fcntl(sock, F_GETFL, 0); - fcntl(sock, F_SETFL, flags | O_NONBLOCK); -#endif -} - -int mg_is_error(int n) { -#ifdef MG_SOCKET_SIMPLELINK - DBG(("n = %d, errno = %d", n, errno)); - if (n < 0) errno = n; -#endif - return n == 0 || (n < 0 && errno != EINTR && errno != EINPROGRESS && - errno != EAGAIN && errno != EWOULDBLOCK -#ifdef MG_SOCKET_SIMPLELINK - && errno != SL_EALREADY -#endif -#ifdef _WIN32 - && WSAGetLastError() != WSAEINTR && - WSAGetLastError() != WSAEWOULDBLOCK -#endif - ); -} - -void mg_if_connect_tcp(struct mg_connection *nc, - const union socket_address *sa) { - int rc; - nc->sock = socket(AF_INET, SOCK_STREAM, 0); - if (nc->sock == INVALID_SOCKET) { - nc->err = errno ? errno : 1; - return; - } -#if !defined(MG_SOCKET_SIMPLELINK) && !defined(MG_ESP8266) - mg_set_non_blocking_mode(nc->sock); -#endif - rc = connect(nc->sock, &sa->sa, sizeof(sa->sin)); - nc->err = mg_is_error(rc) ? errno : 0; - DBG(("%p sock %d err %d", nc, nc->sock, nc->err)); -} - -void mg_if_connect_udp(struct mg_connection *nc) { - nc->sock = socket(AF_INET, SOCK_DGRAM, 0); - if (nc->sock == INVALID_SOCKET) { - nc->err = errno ? errno : 1; - return; - } - nc->err = 0; -} - -int mg_if_listen_tcp(struct mg_connection *nc, union socket_address *sa) { - sock_t sock = mg_open_listening_socket(sa, SOCK_STREAM); - if (sock == INVALID_SOCKET) { - return (errno ? errno : 1); - } - mg_sock_set(nc, sock); - return 0; -} - -int mg_if_listen_udp(struct mg_connection *nc, union socket_address *sa) { - sock_t sock = mg_open_listening_socket(sa, SOCK_DGRAM); - if (sock == INVALID_SOCKET) return (errno ? errno : 1); - mg_sock_set(nc, sock); - return 0; -} - -void mg_if_tcp_send(struct mg_connection *nc, const void *buf, size_t len) { - mbuf_append(&nc->send_mbuf, buf, len); -} - -void mg_if_udp_send(struct mg_connection *nc, const void *buf, size_t len) { - mbuf_append(&nc->send_mbuf, buf, len); -} - -void mg_if_recved(struct mg_connection *nc, size_t len) { - (void) nc; - (void) len; -} - -int mg_if_create_conn(struct mg_connection *nc) { - (void) nc; - return 1; -} - -void mg_if_destroy_conn(struct mg_connection *nc) { - if (nc->sock == INVALID_SOCKET) return; - if (!(nc->flags & MG_F_UDP)) { - closesocket(nc->sock); - } else { - /* Only close outgoing UDP sockets or listeners. */ - if (nc->listener == NULL) closesocket(nc->sock); - } - /* - * avoid users accidentally double close a socket - * because it can lead to difficult to debug situations. - * It would happen only if reusing a destroyed mg_connection - * but it's not always possible to run the code through an - * address sanitizer. - */ - nc->sock = INVALID_SOCKET; -} - -static int mg_accept_conn(struct mg_connection *lc) { - struct mg_connection *nc; - union socket_address sa; - socklen_t sa_len = sizeof(sa); - /* NOTE(lsm): on Windows, sock is always > FD_SETSIZE */ - sock_t sock = accept(lc->sock, &sa.sa, &sa_len); - if (sock == INVALID_SOCKET) { - if (mg_is_error(-1)) { DBG(("%p: failed to accept: %d", lc, errno)) }; - return 0; - } - nc = mg_if_accept_new_conn(lc); - if (nc == NULL) { - closesocket(sock); - return 0; - } - DBG(("%p conn from %s:%d", nc, inet_ntoa(sa.sin.sin_addr), - ntohs(sa.sin.sin_port))); - mg_sock_set(nc, sock); -#ifdef MG_ENABLE_SSL - if (lc->ssl_ctx != NULL) { - nc->ssl = SSL_new(lc->ssl_ctx); - if (nc->ssl == NULL || SSL_set_fd(nc->ssl, sock) != 1) { - DBG(("SSL error")); - mg_close_conn(nc); - } - } else -#endif - { - mg_if_accept_tcp_cb(nc, &sa, sa_len); - } - return 1; -} - -/* 'sa' must be an initialized address to bind to */ -static sock_t mg_open_listening_socket(union socket_address *sa, int proto) { - socklen_t sa_len = - (sa->sa.sa_family == AF_INET) ? sizeof(sa->sin) : sizeof(sa->sin6); - sock_t sock = INVALID_SOCKET; -#if !defined(MG_SOCKET_SIMPLELINK) && !defined(MG_LWIP) - int on = 1; -#endif - - if ((sock = socket(sa->sa.sa_family, proto, 0)) != INVALID_SOCKET && -#if !defined(MG_SOCKET_SIMPLELINK) && \ - !defined(MG_LWIP) /* SimpleLink and LWIP don't support either */ -#if defined(_WIN32) && defined(SO_EXCLUSIVEADDRUSE) - /* "Using SO_REUSEADDR and SO_EXCLUSIVEADDRUSE" http://goo.gl/RmrFTm */ - !setsockopt(sock, SOL_SOCKET, SO_EXCLUSIVEADDRUSE, (void *) &on, - sizeof(on)) && -#endif - -#if !defined(_WIN32) || !defined(SO_EXCLUSIVEADDRUSE) - /* - * SO_RESUSEADDR is not enabled on Windows because the semantics of - * SO_REUSEADDR on UNIX and Windows is different. On Windows, - * SO_REUSEADDR allows to bind a socket to a port without error even if - * the port is already open by another program. This is not the behavior - * SO_REUSEADDR was designed for, and leads to hard-to-track failure - * scenarios. Therefore, SO_REUSEADDR was disabled on Windows unless - * SO_EXCLUSIVEADDRUSE is supported and set on a socket. - */ - !setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *) &on, sizeof(on)) && -#endif -#endif /* !MG_SOCKET_SIMPLELINK && !MG_LWIP */ - - !bind(sock, &sa->sa, sa_len) && - (proto == SOCK_DGRAM || listen(sock, SOMAXCONN) == 0)) { -#if !defined(MG_SOCKET_SIMPLELINK) && \ - !defined(MG_LWIP) /* TODO(rojer): Fix this. */ - mg_set_non_blocking_mode(sock); - /* In case port was set to 0, get the real port number */ - (void) getsockname(sock, &sa->sa, &sa_len); -#endif - } else if (sock != INVALID_SOCKET) { - closesocket(sock); - sock = INVALID_SOCKET; - } - - return sock; -} - -static void mg_write_to_socket(struct mg_connection *nc) { - struct mbuf *io = &nc->send_mbuf; - int n = 0; - -#ifdef MG_LWIP - /* With LWIP we don't know if the socket is ready */ - if (io->len == 0) return; -#endif - - assert(io->len > 0); - - if (nc->flags & MG_F_UDP) { - int n = - sendto(nc->sock, io->buf, io->len, 0, &nc->sa.sa, sizeof(nc->sa.sin)); - DBG(("%p %d %d %d %s:%hu", nc, nc->sock, n, errno, - inet_ntoa(nc->sa.sin.sin_addr), ntohs(nc->sa.sin.sin_port))); - if (n > 0) { - mbuf_remove(io, n); - } - mg_if_sent_cb(nc, n); - return; - } - -#ifdef MG_ENABLE_SSL - if (nc->ssl != NULL) { - if (nc->flags & MG_F_SSL_HANDSHAKE_DONE) { - n = SSL_write(nc->ssl, io->buf, io->len); - DBG(("%p %d bytes -> %d (SSL)", nc, n, nc->sock)); - if (n <= 0) { - int ssl_err = mg_ssl_err(nc, n); - if (ssl_err == SSL_ERROR_WANT_READ || ssl_err == SSL_ERROR_WANT_WRITE) { - return; /* Call us again */ - } - } else { - /* Successful SSL operation, clear off SSL wait flags */ - nc->flags &= ~(MG_F_WANT_READ | MG_F_WANT_WRITE); - } - } else { - mg_ssl_begin(nc); - return; - } - } else -#endif - { - n = (int) MG_SEND_FUNC(nc->sock, io->buf, io->len, 0); - DBG(("%p %d bytes -> %d", nc, n, nc->sock)); - if (n < 0 && !mg_is_error(n)) return; - } - - if (n > 0) { - mbuf_remove(io, n); - } - mg_if_sent_cb(nc, n); -} - -MG_INTERNAL size_t recv_avail_size(struct mg_connection *conn, size_t max) { - size_t avail; - if (conn->recv_mbuf_limit < conn->recv_mbuf.len) return 0; - avail = conn->recv_mbuf_limit - conn->recv_mbuf.len; - return avail > max ? max : avail; -} - -static void mg_read_from_socket(struct mg_connection *conn) { - int n = 0; - char *buf = (char *) MG_MALLOC(MG_TCP_RECV_BUFFER_SIZE); - - if (buf == NULL) { - DBG(("OOM")); - return; - } - -#ifdef MG_ENABLE_SSL - if (conn->ssl != NULL) { - if (conn->flags & MG_F_SSL_HANDSHAKE_DONE) { - /* SSL library may have more bytes ready to read then we ask to read. - * Therefore, read in a loop until we read everything. Without the loop, - * we skip to the next select() cycle which can just timeout. */ - while ((n = SSL_read(conn->ssl, buf, MG_TCP_RECV_BUFFER_SIZE)) > 0) { - DBG(("%p %d bytes <- %d (SSL)", conn, n, conn->sock)); - mg_if_recv_tcp_cb(conn, buf, n); - buf = NULL; - if (conn->flags & MG_F_CLOSE_IMMEDIATELY) break; - /* buf has been freed, we need a new one. */ - buf = (char *) MG_MALLOC(MG_TCP_RECV_BUFFER_SIZE); - if (buf == NULL) break; - } - MG_FREE(buf); - mg_ssl_err(conn, n); - } else { - MG_FREE(buf); - mg_ssl_begin(conn); - return; - } - } else -#endif - { - n = (int) MG_RECV_FUNC(conn->sock, buf, - recv_avail_size(conn, MG_TCP_RECV_BUFFER_SIZE), 0); - DBG(("%p %d bytes (PLAIN) <- %d", conn, n, conn->sock)); - if (n > 0) { - mg_if_recv_tcp_cb(conn, buf, n); - } else { - MG_FREE(buf); - } - if (n == 0) { - /* Orderly shutdown of the socket, try flushing output. */ - conn->flags |= MG_F_SEND_AND_CLOSE; - } else if (mg_is_error(n)) { - conn->flags |= MG_F_CLOSE_IMMEDIATELY; - } - } -} - -static int mg_recvfrom(struct mg_connection *nc, union socket_address *sa, - socklen_t *sa_len, char **buf) { - int n; - *buf = (char *) MG_MALLOC(MG_UDP_RECV_BUFFER_SIZE); - if (*buf == NULL) { - DBG(("Out of memory")); - return -ENOMEM; - } - n = recvfrom(nc->sock, *buf, MG_UDP_RECV_BUFFER_SIZE, 0, &sa->sa, sa_len); - if (n <= 0) { - DBG(("%p recvfrom: %s", nc, strerror(errno))); - MG_FREE(*buf); - } - return n; -} - -static void mg_handle_udp_read(struct mg_connection *nc) { - char *buf = NULL; - union socket_address sa; - socklen_t sa_len = sizeof(sa); - int n = mg_recvfrom(nc, &sa, &sa_len, &buf); - DBG(("%p %d bytes from %s:%d", nc, n, inet_ntoa(nc->sa.sin.sin_addr), - ntohs(nc->sa.sin.sin_port))); - mg_if_recv_udp_cb(nc, buf, n, &sa, sa_len); -} - -#ifdef MG_ENABLE_SSL -static int mg_ssl_err(struct mg_connection *conn, int res) { - int ssl_err = SSL_get_error(conn->ssl, res); - DBG(("%p %d -> %d", conn, res, ssl_err)); - if (ssl_err == SSL_ERROR_WANT_READ) { - conn->flags |= MG_F_WANT_READ; - } else if (ssl_err == SSL_ERROR_WANT_WRITE) { - conn->flags |= MG_F_WANT_WRITE; - } else { - /* There could be an alert to deliver. Try our best. */ - SSL_write(conn->ssl, "", 0); - conn->flags |= MG_F_CLOSE_IMMEDIATELY; - } - return ssl_err; -} - -static void mg_ssl_begin(struct mg_connection *nc) { - int server_side = (nc->listener != NULL); - int res = server_side ? SSL_accept(nc->ssl) : SSL_connect(nc->ssl); - DBG(("%p %d res %d %d", nc, server_side, res, errno)); - - if (res == 1) { - nc->flags |= MG_F_SSL_HANDSHAKE_DONE; - nc->flags &= ~(MG_F_WANT_READ | MG_F_WANT_WRITE); - - if (server_side) { - union socket_address sa; - socklen_t sa_len = sizeof(sa); - (void) getpeername(nc->sock, &sa.sa, &sa_len); - mg_if_accept_tcp_cb(nc, &sa, sa_len); - } else { - mg_if_connect_cb(nc, 0); - } - } else { - int ssl_err = mg_ssl_err(nc, res); - if (ssl_err != SSL_ERROR_WANT_READ && ssl_err != SSL_ERROR_WANT_WRITE) { - if (!server_side) { - mg_if_connect_cb(nc, ssl_err); - } - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - } - } -} -#endif /* MG_ENABLE_SSL */ - -#define _MG_F_FD_CAN_READ 1 -#define _MG_F_FD_CAN_WRITE 1 << 1 -#define _MG_F_FD_ERROR 1 << 2 - -void mg_mgr_handle_conn(struct mg_connection *nc, int fd_flags, double now) { - DBG(("%p fd=%d fd_flags=%d nc_flags=%lu rmbl=%d smbl=%d", nc, nc->sock, - fd_flags, nc->flags, (int) nc->recv_mbuf.len, (int) nc->send_mbuf.len)); - - if (nc->flags & MG_F_CONNECTING) { - if (fd_flags != 0) { - int err = 0; -#if !defined(MG_SOCKET_SIMPLELINK) && !defined(MG_ESP8266) - if (!(nc->flags & MG_F_UDP)) { - socklen_t len = sizeof(err); - int ret = - getsockopt(nc->sock, SOL_SOCKET, SO_ERROR, (char *) &err, &len); - if (ret != 0) err = 1; - } -#else -/* On SimpleLink and ESP8266 we use blocking connect. If we got as far as - * this, it means connect() was successful. - * TODO(rojer): Figure out why it fails where blocking succeeds. - */ -#endif -#ifdef MG_ENABLE_SSL - if (nc->ssl != NULL && err == 0) { - SSL_set_fd(nc->ssl, nc->sock); - mg_ssl_begin(nc); - } else { - mg_if_connect_cb(nc, err); - } -#else - mg_if_connect_cb(nc, err); -#endif - } else if (nc->err != 0) { - mg_if_connect_cb(nc, nc->err); - } - } - - if (fd_flags & _MG_F_FD_CAN_READ) { - if (nc->flags & MG_F_UDP) { - mg_handle_udp_read(nc); - } else { - if (nc->flags & MG_F_LISTENING) { - /* - * We're not looping here, and accepting just one connection at - * a time. The reason is that eCos does not respect non-blocking - * flag on a listening socket and hangs in a loop. - */ - if (fd_flags & _MG_F_FD_CAN_READ) mg_accept_conn(nc); - } else { - mg_read_from_socket(nc); - } - } - } - - if (!(nc->flags & MG_F_CLOSE_IMMEDIATELY)) { - if ((fd_flags & _MG_F_FD_CAN_WRITE) && nc->send_mbuf.len > 0) { - mg_write_to_socket(nc); - } - - if (!(fd_flags & (_MG_F_FD_CAN_READ | _MG_F_FD_CAN_WRITE))) { - mg_if_poll(nc, now); - } - mg_if_timer(nc, now); - } - - DBG(("%p after fd=%d nc_flags=%lu rmbl=%d smbl=%d", nc, nc->sock, nc->flags, - (int) nc->recv_mbuf.len, (int) nc->send_mbuf.len)); -} - -#ifndef MG_DISABLE_SOCKETPAIR -static void mg_mgr_handle_ctl_sock(struct mg_mgr *mgr) { - struct ctl_msg ctl_msg; - int len = - (int) MG_RECV_FUNC(mgr->ctl[1], (char *) &ctl_msg, sizeof(ctl_msg), 0); - size_t dummy = MG_SEND_FUNC(mgr->ctl[1], ctl_msg.message, 1, 0); - DBG(("read %d from ctl socket", len)); - (void) dummy; /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509 */ - if (len >= (int) sizeof(ctl_msg.callback) && ctl_msg.callback != NULL) { - struct mg_connection *nc; - for (nc = mg_next(mgr, NULL); nc != NULL; nc = mg_next(mgr, nc)) { - ctl_msg.callback(nc, MG_EV_POLL, ctl_msg.message); - } - } -} -#endif - -/* Associate a socket to a connection. */ -void mg_sock_set(struct mg_connection *nc, sock_t sock) { - mg_set_non_blocking_mode(sock); - mg_set_close_on_exec(sock); - nc->sock = sock; - DBG(("%p %d", nc, sock)); -} - -void mg_ev_mgr_init(struct mg_mgr *mgr) { - (void) mgr; - DBG(("%p using select()", mgr)); -#ifndef MG_DISABLE_SOCKETPAIR - do { - mg_socketpair(mgr->ctl, SOCK_DGRAM); - } while (mgr->ctl[0] == INVALID_SOCKET); -#endif -} - -void mg_ev_mgr_free(struct mg_mgr *mgr) { - (void) mgr; -} - -void mg_ev_mgr_add_conn(struct mg_connection *nc) { - (void) nc; -} - -void mg_ev_mgr_remove_conn(struct mg_connection *nc) { - (void) nc; -} - -void mg_add_to_set(sock_t sock, fd_set *set, sock_t *max_fd) { - if (sock != INVALID_SOCKET -#ifdef __unix__ - && sock < FD_SETSIZE -#endif - ) { - FD_SET(sock, set); - if (*max_fd == INVALID_SOCKET || sock > *max_fd) { - *max_fd = sock; - } - } -} - -time_t mg_mgr_poll(struct mg_mgr *mgr, int timeout_ms) { - double now = mg_time(); - double min_timer; - struct mg_connection *nc, *tmp; - struct timeval tv; - fd_set read_set, write_set, err_set; - sock_t max_fd = INVALID_SOCKET; - int num_fds, num_ev, num_timers = 0; -#ifdef __unix__ - int try_dup = 1; -#endif - - FD_ZERO(&read_set); - FD_ZERO(&write_set); - FD_ZERO(&err_set); -#ifndef MG_DISABLE_SOCKETPAIR - mg_add_to_set(mgr->ctl[1], &read_set, &max_fd); -#endif - - /* - * Note: it is ok to have connections with sock == INVALID_SOCKET in the list, - * e.g. timer-only "connections". - */ - min_timer = 0; - for (nc = mgr->active_connections, num_fds = 0; nc != NULL; nc = tmp) { - tmp = nc->next; - - if (nc->sock != INVALID_SOCKET) { - num_fds++; - -#ifdef __unix__ - /* A hack to make sure all our file descriptos fit into FD_SETSIZE. */ - if (nc->sock >= FD_SETSIZE && try_dup) { - int new_sock = dup(nc->sock); - if (new_sock >= 0 && new_sock < FD_SETSIZE) { - closesocket(nc->sock); - DBG(("new sock %d -> %d", nc->sock, new_sock)); - nc->sock = new_sock; - } else { - try_dup = 0; - } - } -#endif - - if (!(nc->flags & MG_F_WANT_WRITE) && - nc->recv_mbuf.len < nc->recv_mbuf_limit && - (!(nc->flags & MG_F_UDP) || nc->listener == NULL)) { - mg_add_to_set(nc->sock, &read_set, &max_fd); - } - - if (((nc->flags & MG_F_CONNECTING) && !(nc->flags & MG_F_WANT_READ)) || - (nc->send_mbuf.len > 0 && !(nc->flags & MG_F_CONNECTING))) { - mg_add_to_set(nc->sock, &write_set, &max_fd); - mg_add_to_set(nc->sock, &err_set, &max_fd); - } - } - - if (nc->ev_timer_time > 0) { - if (num_timers == 0 || nc->ev_timer_time < min_timer) { - min_timer = nc->ev_timer_time; - } - num_timers++; - } - } - - /* - * If there is a timer to be fired earlier than the requested timeout, - * adjust the timeout. - */ - if (num_timers > 0) { - double timer_timeout_ms = (min_timer - mg_time()) * 1000 + 1 /* rounding */; - if (timer_timeout_ms < timeout_ms) { - timeout_ms = timer_timeout_ms; - } - } - if (timeout_ms < 0) timeout_ms = 0; - - tv.tv_sec = timeout_ms / 1000; - tv.tv_usec = (timeout_ms % 1000) * 1000; - - num_ev = select((int) max_fd + 1, &read_set, &write_set, &err_set, &tv); - now = mg_time(); - DBG(("select @ %ld num_ev=%d of %d, timeout=%d", (long) now, num_ev, num_fds, - timeout_ms)); - -#ifndef MG_DISABLE_SOCKETPAIR - if (num_ev > 0 && mgr->ctl[1] != INVALID_SOCKET && - FD_ISSET(mgr->ctl[1], &read_set)) { - mg_mgr_handle_ctl_sock(mgr); - } -#endif - - for (nc = mgr->active_connections; nc != NULL; nc = tmp) { - int fd_flags = 0; - if (nc->sock != INVALID_SOCKET) { - if (num_ev > 0) { - fd_flags = (FD_ISSET(nc->sock, &read_set) && - (!(nc->flags & MG_F_UDP) || nc->listener == NULL) - ? _MG_F_FD_CAN_READ - : 0) | - (FD_ISSET(nc->sock, &write_set) ? _MG_F_FD_CAN_WRITE : 0) | - (FD_ISSET(nc->sock, &err_set) ? _MG_F_FD_ERROR : 0); - } -#ifdef MG_SOCKET_SIMPLELINK - /* SimpleLink does not report UDP sockets as writeable. */ - if (nc->flags & MG_F_UDP && - (nc->send_mbuf.len > 0 || nc->flags & MG_F_CONNECTING)) { - fd_flags |= _MG_F_FD_CAN_WRITE; - } -#endif -#ifdef MG_LWIP - /* With LWIP socket emulation layer, we don't get write events */ - fd_flags |= _MG_F_FD_CAN_WRITE; -#endif - } - tmp = nc->next; - mg_mgr_handle_conn(nc, fd_flags, now); - } - - for (nc = mgr->active_connections; nc != NULL; nc = tmp) { - tmp = nc->next; - if ((nc->flags & MG_F_CLOSE_IMMEDIATELY) || - (nc->send_mbuf.len == 0 && (nc->flags & MG_F_SEND_AND_CLOSE))) { - mg_close_conn(nc); - } - } - - return now; -} - -#ifndef MG_DISABLE_SOCKETPAIR -int mg_socketpair(sock_t sp[2], int sock_type) { - union socket_address sa; - sock_t sock; - socklen_t len = sizeof(sa.sin); - int ret = 0; - - sock = sp[0] = sp[1] = INVALID_SOCKET; - - (void) memset(&sa, 0, sizeof(sa)); - sa.sin.sin_family = AF_INET; - sa.sin.sin_port = htons(0); - sa.sin.sin_addr.s_addr = htonl(0x7f000001); /* 127.0.0.1 */ - - if ((sock = socket(AF_INET, sock_type, 0)) == INVALID_SOCKET) { - } else if (bind(sock, &sa.sa, len) != 0) { - } else if (sock_type == SOCK_STREAM && listen(sock, 1) != 0) { - } else if (getsockname(sock, &sa.sa, &len) != 0) { - } else if ((sp[0] = socket(AF_INET, sock_type, 0)) == INVALID_SOCKET) { - } else if (connect(sp[0], &sa.sa, len) != 0) { - } else if (sock_type == SOCK_DGRAM && - (getsockname(sp[0], &sa.sa, &len) != 0 || - connect(sock, &sa.sa, len) != 0)) { - } else if ((sp[1] = (sock_type == SOCK_DGRAM ? sock - : accept(sock, &sa.sa, &len))) == - INVALID_SOCKET) { - } else { - mg_set_close_on_exec(sp[0]); - mg_set_close_on_exec(sp[1]); - if (sock_type == SOCK_STREAM) closesocket(sock); - ret = 1; - } - - if (!ret) { - if (sp[0] != INVALID_SOCKET) closesocket(sp[0]); - if (sp[1] != INVALID_SOCKET) closesocket(sp[1]); - if (sock != INVALID_SOCKET) closesocket(sock); - sock = sp[0] = sp[1] = INVALID_SOCKET; - } - - return ret; -} -#endif /* MG_DISABLE_SOCKETPAIR */ - -#ifndef MG_SOCKET_SIMPLELINK -static void mg_sock_get_addr(sock_t sock, int remote, - union socket_address *sa) { - socklen_t slen = sizeof(*sa); - memset(sa, 0, slen); - if (remote) { - getpeername(sock, &sa->sa, &slen); - } else { - getsockname(sock, &sa->sa, &slen); - } -} - -void mg_sock_to_str(sock_t sock, char *buf, size_t len, int flags) { - union socket_address sa; - mg_sock_get_addr(sock, flags & MG_SOCK_STRINGIFY_REMOTE, &sa); - mg_sock_addr_to_str(&sa, buf, len, flags); -} -#endif - -void mg_if_get_conn_addr(struct mg_connection *nc, int remote, - union socket_address *sa) { -#ifndef MG_SOCKET_SIMPLELINK - mg_sock_get_addr(nc->sock, remote, sa); -#else - /* SimpleLink does not provide a way to get socket's peer address after - * accept or connect. Address hould have been preserved in the connection, - * so we do our best here by using it. */ - if (remote) memcpy(sa, &nc->sa, sizeof(*sa)); -#endif -} - -#endif /* !MG_DISABLE_SOCKET_IF */ -#ifdef MG_MODULE_LINES -#line 1 "./src/multithreading.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/util.h" */ - -#ifdef MG_ENABLE_THREADS - -static void multithreaded_ev_handler(struct mg_connection *c, int ev, void *p); - -/* - * This thread function executes user event handler. - * It runs an event manager that has only one connection, until that - * connection is alive. - */ -static void *per_connection_thread_function(void *param) { - struct mg_connection *c = (struct mg_connection *) param; - struct mg_mgr m; - - mg_mgr_init(&m, NULL); - mg_add_conn(&m, c); - while (m.active_connections != NULL) { - mg_mgr_poll(&m, 1000); - } - mg_mgr_free(&m); - - return param; -} - -static void link_conns(struct mg_connection *c1, struct mg_connection *c2) { - c1->priv_2 = c2; - c2->priv_2 = c1; -} - -static void unlink_conns(struct mg_connection *c) { - struct mg_connection *peer = (struct mg_connection *) c->priv_2; - if (peer != NULL) { - peer->flags |= MG_F_SEND_AND_CLOSE; - peer->priv_2 = NULL; - } - c->priv_2 = NULL; -} - -static void forwarder_ev_handler(struct mg_connection *c, int ev, void *p) { - (void) p; - if (ev == MG_EV_RECV && c->priv_2) { - mg_forward(c, (struct mg_connection *) c->priv_2); - } else if (ev == MG_EV_CLOSE) { - unlink_conns(c); - } -} - -static void spawn_handling_thread(struct mg_connection *nc) { - struct mg_mgr dummy; - sock_t sp[2]; - struct mg_connection *c[2]; - - /* - * Create a socket pair, and wrap each socket into the connection with - * dummy event manager. - * c[0] stays in this thread, c[1] goes to another thread. - */ - mg_socketpair(sp, SOCK_STREAM); - memset(&dummy, 0, sizeof(dummy)); - c[0] = mg_add_sock(&dummy, sp[0], forwarder_ev_handler); - c[1] = mg_add_sock(&dummy, sp[1], nc->listener->priv_1.f); - - /* Interlink client connection with c[0] */ - link_conns(c[0], nc); - - /* - * Switch c[0] manager from the dummy one to the real one. c[1] manager - * will be set in another thread, allocated on stack of that thread. - */ - mg_add_conn(nc->mgr, c[0]); - - /* - * Dress c[1] as nc. - * TODO(lsm): code in accept_conn() looks similar. Refactor. - */ - c[1]->listener = nc->listener; - c[1]->proto_handler = nc->proto_handler; - c[1]->proto_data = nc->proto_data; - c[1]->user_data = nc->user_data; - - mg_start_thread(per_connection_thread_function, c[1]); -} - -static void multithreaded_ev_handler(struct mg_connection *c, int ev, void *p) { - (void) p; - if (ev == MG_EV_ACCEPT) { - spawn_handling_thread(c); - c->handler = forwarder_ev_handler; - } -} - -void mg_enable_multithreading(struct mg_connection *nc) { - /* Wrap user event handler into our multithreaded_ev_handler */ - nc->priv_1.f = nc->handler; - nc->handler = multithreaded_ev_handler; -} -#endif -#ifdef MG_MODULE_LINES -#line 1 "./src/uri.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/uri.h" */ - -/* - * scan string until `sep`, keeping track of component boundaries in `res`. - * - * `p` will point to the char after the separator or it will be `end`. - */ -static void parse_uri_component(const char **p, const char *end, char sep, - struct mg_str *res) { - res->p = *p; - for (; *p < end; (*p)++) { - if (**p == sep) { - break; - } - } - res->len = (*p) - res->p; - if (*p < end) (*p)++; -} - -int mg_parse_uri(struct mg_str uri, struct mg_str *scheme, - struct mg_str *user_info, struct mg_str *host, - unsigned int *port, struct mg_str *path, struct mg_str *query, - struct mg_str *fragment) { - struct mg_str rscheme = {0, 0}, ruser_info = {0, 0}, rhost = {0, 0}, - rpath = {0, 0}, rquery = {0, 0}, rfragment = {0, 0}; - unsigned int rport = 0; - enum { - P_START, - P_SCHEME_OR_PORT, - P_USER_INFO, - P_HOST, - P_PORT, - P_REST - } state = P_START; - - const char *p = uri.p, *end = p + uri.len; - while (p < end) { - switch (state) { - case P_START: - /* - * expecting on of: - * - `scheme://xxxx` - * - `xxxx:port` - * - `xxxx/path` - */ - for (; p < end; p++) { - if (*p == ':') { - state = P_SCHEME_OR_PORT; - break; - } else if (*p == '/') { - state = P_REST; - break; - } - } - if (state == P_START || state == P_REST) { - rhost.p = uri.p; - rhost.len = p - uri.p; - } - break; - case P_SCHEME_OR_PORT: - if (end - p >= 3 && memcmp(p, "://", 3) == 0) { - rscheme.p = uri.p; - rscheme.len = p - uri.p; - state = P_USER_INFO; - p += 2; /* point to last separator char */ - } else { - rhost.p = uri.p; - rhost.len = p - uri.p; - state = P_PORT; - } - break; - case P_USER_INFO: - p++; - ruser_info.p = p; - for (; p < end; p++) { - if (*p == '@') { - state = P_HOST; - break; - } else if (*p == '/') { - break; - } - } - if (p == end || *p == '/') { - /* backtrack and parse as host */ - state = P_HOST; - p = ruser_info.p; - } - ruser_info.len = p - ruser_info.p; - break; - case P_HOST: - if (*p == '@') p++; - rhost.p = p; - for (; p < end; p++) { - if (*p == ':') { - state = P_PORT; - break; - } else if (*p == '/') { - state = P_REST; - break; - } - } - rhost.len = p - rhost.p; - break; - case P_PORT: - p++; - for (; p < end; p++) { - if (*p == '/') { - state = P_REST; - break; - } - rport *= 10; - rport += *p - '0'; - } - break; - case P_REST: - /* `p` points to separator. `path` includes the separator */ - parse_uri_component(&p, end, '?', &rpath); - parse_uri_component(&p, end, '#', &rquery); - parse_uri_component(&p, end, '\0', &rfragment); - break; - } - } - - if (scheme != 0) *scheme = rscheme; - if (user_info != 0) *user_info = ruser_info; - if (host != 0) *host = rhost; - if (port != 0) *port = rport; - if (path != 0) *path = rpath; - if (query != 0) *query = rquery; - if (fragment != 0) *fragment = rfragment; - - return 0; -} - -/* Normalize the URI path. Remove/resolve "." and "..". */ -int mg_normalize_uri_path(const struct mg_str *in, struct mg_str *out) { - const char *s = in->p, *se = s + in->len; - char *cp = (char *) out->p, *d; - - if (in->len == 0 || *s != '/') { - out->len = 0; - return 0; - } - - d = cp; - - while (s < se) { - const char *next = s; - struct mg_str component; - parse_uri_component(&next, se, '/', &component); - if (mg_vcmp(&component, ".") == 0) { - /* Yum. */ - } else if (mg_vcmp(&component, "..") == 0) { - /* Backtrack to previous slash. */ - if (d > cp + 1 && *(d - 1) == '/') d--; - while (d > cp && *(d - 1) != '/') d--; - } else { - memmove(d, s, next - s); - d += next - s; - } - s = next; - } - if (d == cp) *d++ = '/'; - - out->p = cp; - out->len = d - cp; - return 1; -} -#ifdef MG_MODULE_LINES -#line 1 "./src/http.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef MG_DISABLE_HTTP - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/util.h" */ -/* Amalgamated: #include "common/sha1.h" */ -/* Amalgamated: #include "common/md5.h" */ - -#ifndef MG_DISABLE_HTTP_WEBSOCKET -#define MG_WS_NO_HOST_HEADER_MAGIC ((char *) 0x1) -#endif - -/* CGI requires socketpair. */ -#if defined(MG_DISABLE_SOCKETPAIR) && !defined(MG_DISABLE_CGI) -#define MG_DISABLE_CGI 1 -#endif - -static const char *mg_version_header = "Mongoose/" MG_VERSION; - -enum mg_http_proto_data_type { DATA_NONE, DATA_FILE, DATA_PUT }; - -struct mg_http_proto_data_file { - FILE *fp; /* Opened file. */ - int64_t cl; /* Content-Length. How many bytes to send. */ - int64_t sent; /* How many bytes have been already sent. */ - int keepalive; /* Keep connection open after sending. */ - enum mg_http_proto_data_type type; -}; - -struct mg_http_proto_data_cgi { - struct mg_connection *cgi_nc; -}; - -struct mg_http_proto_data_chuncked { - int64_t body_len; /* How many bytes of chunked body was reassembled. */ -}; - -struct mg_http_endpoint { - struct mg_http_endpoint *next; - const char *name; - size_t name_len; - mg_event_handler_t handler; -}; - -enum mg_http_multipart_stream_state { - MPS_BEGIN, - MPS_WAITING_FOR_BOUNDARY, - MPS_WAITING_FOR_CHUNK, - MPS_GOT_CHUNK, - MPS_GOT_BOUNDARY, - MPS_FINALIZE, - MPS_FINISHED -}; - -struct mg_http_multipart_stream { - const char *boundary; - int boundary_len; - const char *var_name; - const char *file_name; - void *user_data; - int prev_io_len; - enum mg_http_multipart_stream_state state; - int processing_part; -}; - -struct mg_http_proto_data { -#ifndef MG_DISABLE_FILESYSTEM - struct mg_http_proto_data_file file; -#endif -#ifndef MG_DISABLE_CGI - struct mg_http_proto_data_cgi cgi; -#endif -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART - struct mg_http_multipart_stream mp_stream; -#endif - struct mg_http_proto_data_chuncked chunk; - struct mg_http_endpoint *endpoints; - mg_event_handler_t endpoint_handler; -}; - -static void mg_http_conn_destructor(void *proto_data); - -static struct mg_http_proto_data *mg_http_get_proto_data( - struct mg_connection *c) { - if (c->proto_data == NULL) { - c->proto_data = MG_CALLOC(1, sizeof(struct mg_http_proto_data)); - c->proto_data_destructor = mg_http_conn_destructor; - } - - return (struct mg_http_proto_data *) c->proto_data; -} - -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART -static void mg_http_free_proto_data_mp_stream( - struct mg_http_multipart_stream *mp) { - free((void *) mp->boundary); - mp->boundary = NULL; - free((void *) mp->var_name); - mp->var_name = NULL; - free((void *) mp->file_name); - mp->file_name = NULL; -} -#endif - -#ifndef MG_DISABLE_FILESYSTEM -static void mg_http_free_proto_data_file(struct mg_http_proto_data_file *d) { - if (d != NULL) { - if (d->fp != NULL) { - fclose(d->fp); - } - memset(d, 0, sizeof(struct mg_http_proto_data_file)); - } -} -#endif - -#ifndef MG_DISABLE_CGI -static void mg_http_free_proto_data_cgi(struct mg_http_proto_data_cgi *d) { - if (d != NULL) { - if (d->cgi_nc != NULL) d->cgi_nc->flags |= MG_F_CLOSE_IMMEDIATELY; - memset(d, 0, sizeof(struct mg_http_proto_data_cgi)); - } -} -#endif - -static void mg_http_free_proto_data_endpoints(struct mg_http_endpoint **ep) { - struct mg_http_endpoint *current = *ep; - - while (current != NULL) { - struct mg_http_endpoint *tmp = current->next; - free((void *) current->name); - free(current); - current = tmp; - } - - ep = NULL; -} - -static void mg_http_conn_destructor(void *proto_data) { - struct mg_http_proto_data *pd = (struct mg_http_proto_data *) proto_data; -#ifndef MG_DISABLE_FILESYSTEM - mg_http_free_proto_data_file(&pd->file); -#endif -#ifndef MG_DISABLE_CGI - mg_http_free_proto_data_cgi(&pd->cgi); -#endif -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART - mg_http_free_proto_data_mp_stream(&pd->mp_stream); -#endif - mg_http_free_proto_data_endpoints(&pd->endpoints); - free(proto_data); -} - -/* - * This structure helps to create an environment for the spawned CGI program. - * Environment is an array of "VARIABLE=VALUE\0" ASCIIZ strings, - * last element must be NULL. - * However, on Windows there is a requirement that all these VARIABLE=VALUE\0 - * strings must reside in a contiguous buffer. The end of the buffer is - * marked by two '\0' characters. - * We satisfy both worlds: we create an envp array (which is vars), all - * entries are actually pointers inside buf. - */ -struct mg_cgi_env_block { - struct mg_connection *nc; - char buf[MG_CGI_ENVIRONMENT_SIZE]; /* Environment buffer */ - const char *vars[MG_MAX_CGI_ENVIR_VARS]; /* char *envp[] */ - int len; /* Space taken */ - int nvars; /* Number of variables in envp[] */ -}; - -#ifndef MG_DISABLE_FILESYSTEM - -#define MIME_ENTRY(_ext, _type) \ - { _ext, sizeof(_ext) - 1, _type } -static const struct { - const char *extension; - size_t ext_len; - const char *mime_type; -} mg_static_builtin_mime_types[] = { - MIME_ENTRY("html", "text/html"), - MIME_ENTRY("html", "text/html"), - MIME_ENTRY("htm", "text/html"), - MIME_ENTRY("shtm", "text/html"), - MIME_ENTRY("shtml", "text/html"), - MIME_ENTRY("css", "text/css"), - MIME_ENTRY("js", "application/x-javascript"), - MIME_ENTRY("ico", "image/x-icon"), - MIME_ENTRY("gif", "image/gif"), - MIME_ENTRY("jpg", "image/jpeg"), - MIME_ENTRY("jpeg", "image/jpeg"), - MIME_ENTRY("png", "image/png"), - MIME_ENTRY("svg", "image/svg+xml"), - MIME_ENTRY("txt", "text/plain"), - MIME_ENTRY("torrent", "application/x-bittorrent"), - MIME_ENTRY("wav", "audio/x-wav"), - MIME_ENTRY("mp3", "audio/x-mp3"), - MIME_ENTRY("mid", "audio/mid"), - MIME_ENTRY("m3u", "audio/x-mpegurl"), - MIME_ENTRY("ogg", "application/ogg"), - MIME_ENTRY("ram", "audio/x-pn-realaudio"), - MIME_ENTRY("xml", "text/xml"), - MIME_ENTRY("ttf", "application/x-font-ttf"), - MIME_ENTRY("json", "application/json"), - MIME_ENTRY("xslt", "application/xml"), - MIME_ENTRY("xsl", "application/xml"), - MIME_ENTRY("ra", "audio/x-pn-realaudio"), - MIME_ENTRY("doc", "application/msword"), - MIME_ENTRY("exe", "application/octet-stream"), - MIME_ENTRY("zip", "application/x-zip-compressed"), - MIME_ENTRY("xls", "application/excel"), - MIME_ENTRY("tgz", "application/x-tar-gz"), - MIME_ENTRY("tar", "application/x-tar"), - MIME_ENTRY("gz", "application/x-gunzip"), - MIME_ENTRY("arj", "application/x-arj-compressed"), - MIME_ENTRY("rar", "application/x-rar-compressed"), - MIME_ENTRY("rtf", "application/rtf"), - MIME_ENTRY("pdf", "application/pdf"), - MIME_ENTRY("swf", "application/x-shockwave-flash"), - MIME_ENTRY("mpg", "video/mpeg"), - MIME_ENTRY("webm", "video/webm"), - MIME_ENTRY("mpeg", "video/mpeg"), - MIME_ENTRY("mov", "video/quicktime"), - MIME_ENTRY("mp4", "video/mp4"), - MIME_ENTRY("m4v", "video/x-m4v"), - MIME_ENTRY("asf", "video/x-ms-asf"), - MIME_ENTRY("avi", "video/x-msvideo"), - MIME_ENTRY("bmp", "image/bmp"), - {NULL, 0, NULL}}; - -#ifndef MG_DISABLE_DAV -static int mg_mkdir(const char *path, uint32_t mode) { -#ifndef _WIN32 - return mkdir(path, mode); -#else - (void) mode; - return _mkdir(path); -#endif -} -#endif - -static struct mg_str mg_get_mime_type(const char *path, const char *dflt, - const struct mg_serve_http_opts *opts) { - const char *ext, *overrides; - size_t i, path_len; - struct mg_str r, k, v; - - path_len = strlen(path); - - overrides = opts->custom_mime_types; - while ((overrides = mg_next_comma_list_entry(overrides, &k, &v)) != NULL) { - ext = path + (path_len - k.len); - if (path_len > k.len && mg_vcasecmp(&k, ext) == 0) { - return v; - } - } - - for (i = 0; mg_static_builtin_mime_types[i].extension != NULL; i++) { - ext = path + (path_len - mg_static_builtin_mime_types[i].ext_len); - if (path_len > mg_static_builtin_mime_types[i].ext_len && ext[-1] == '.' && - mg_casecmp(ext, mg_static_builtin_mime_types[i].extension) == 0) { - r.p = mg_static_builtin_mime_types[i].mime_type; - r.len = strlen(r.p); - return r; - } - } - - r.p = dflt; - r.len = strlen(r.p); - return r; -} -#endif - -/* - * Check whether full request is buffered. Return: - * -1 if request is malformed - * 0 if request is not yet fully buffered - * >0 actual request length, including last \r\n\r\n - */ -static int mg_http_get_request_len(const char *s, int buf_len) { - const unsigned char *buf = (unsigned char *) s; - int i; - - for (i = 0; i < buf_len; i++) { - if (!isprint(buf[i]) && buf[i] != '\r' && buf[i] != '\n' && buf[i] < 128) { - return -1; - } else if (buf[i] == '\n' && i + 1 < buf_len && buf[i + 1] == '\n') { - return i + 2; - } else if (buf[i] == '\n' && i + 2 < buf_len && buf[i + 1] == '\r' && - buf[i + 2] == '\n') { - return i + 3; - } - } - - return 0; -} - -static const char *mg_http_parse_headers(const char *s, const char *end, - int len, struct http_message *req) { - int i; - for (i = 0; i < (int) ARRAY_SIZE(req->header_names) - 1; i++) { - struct mg_str *k = &req->header_names[i], *v = &req->header_values[i]; - - s = mg_skip(s, end, ": ", k); - s = mg_skip(s, end, "\r\n", v); - - while (v->len > 0 && v->p[v->len - 1] == ' ') { - v->len--; /* Trim trailing spaces in header value */ - } - - if (k->len == 0 || v->len == 0) { - k->p = v->p = NULL; - k->len = v->len = 0; - break; - } - - if (!mg_ncasecmp(k->p, "Content-Length", 14)) { - req->body.len = to64(v->p); - req->message.len = len + req->body.len; - } - } - - return s; -} - -int mg_parse_http(const char *s, int n, struct http_message *hm, int is_req) { - const char *end, *qs; - int len = mg_http_get_request_len(s, n); - - if (len <= 0) return len; - - memset(hm, 0, sizeof(*hm)); - hm->message.p = s; - hm->body.p = s + len; - hm->message.len = hm->body.len = (size_t) ~0; - end = s + len; - - /* Request is fully buffered. Skip leading whitespaces. */ - while (s < end && isspace(*(unsigned char *) s)) s++; - - if (is_req) { - /* Parse request line: method, URI, proto */ - s = mg_skip(s, end, " ", &hm->method); - s = mg_skip(s, end, " ", &hm->uri); - s = mg_skip(s, end, "\r\n", &hm->proto); - if (hm->uri.p <= hm->method.p || hm->proto.p <= hm->uri.p) return -1; - - /* If URI contains '?' character, initialize query_string */ - if ((qs = (char *) memchr(hm->uri.p, '?', hm->uri.len)) != NULL) { - hm->query_string.p = qs + 1; - hm->query_string.len = &hm->uri.p[hm->uri.len] - (qs + 1); - hm->uri.len = qs - hm->uri.p; - } - } else { - s = mg_skip(s, end, " ", &hm->proto); - if (end - s < 4 || s[3] != ' ') return -1; - hm->resp_code = atoi(s); - if (hm->resp_code < 100 || hm->resp_code >= 600) return -1; - s += 4; - s = mg_skip(s, end, "\r\n", &hm->resp_status_msg); - } - - s = mg_http_parse_headers(s, end, len, hm); - - /* - * mg_parse_http() is used to parse both HTTP requests and HTTP - * responses. If HTTP response does not have Content-Length set, then - * body is read until socket is closed, i.e. body.len is infinite (~0). - * - * For HTTP requests though, according to - * http://tools.ietf.org/html/rfc7231#section-8.1.3, - * only POST and PUT methods have defined body semantics. - * Therefore, if Content-Length is not specified and methods are - * not one of PUT or POST, set body length to 0. - * - * So, - * if it is HTTP request, and Content-Length is not set, - * and method is not (PUT or POST) then reset body length to zero. - */ - if (hm->body.len == (size_t) ~0 && is_req && - mg_vcasecmp(&hm->method, "PUT") != 0 && - mg_vcasecmp(&hm->method, "POST") != 0) { - hm->body.len = 0; - hm->message.len = len; - } - - return len; -} - -struct mg_str *mg_get_http_header(struct http_message *hm, const char *name) { - size_t i, len = strlen(name); - - for (i = 0; hm->header_names[i].len > 0; i++) { - struct mg_str *h = &hm->header_names[i], *v = &hm->header_values[i]; - if (h->p != NULL && h->len == len && !mg_ncasecmp(h->p, name, len)) - return v; - } - - return NULL; -} - -#ifndef MG_DISABLE_HTTP_WEBSOCKET - -static int mg_is_ws_fragment(unsigned char flags) { - return (flags & 0x80) == 0 || (flags & 0x0f) == 0; -} - -static int mg_is_ws_first_fragment(unsigned char flags) { - return (flags & 0x80) == 0 && (flags & 0x0f) != 0; -} - -static void mg_handle_incoming_websocket_frame(struct mg_connection *nc, - struct websocket_message *wsm) { - if (wsm->flags & 0x8) { - mg_call(nc, nc->handler, MG_EV_WEBSOCKET_CONTROL_FRAME, wsm); - } else { - mg_call(nc, nc->handler, MG_EV_WEBSOCKET_FRAME, wsm); - } -} - -static int mg_deliver_websocket_data(struct mg_connection *nc) { - /* Using unsigned char *, cause of integer arithmetic below */ - uint64_t i, data_len = 0, frame_len = 0, buf_len = nc->recv_mbuf.len, len, - mask_len = 0, header_len = 0; - unsigned char *p = (unsigned char *) nc->recv_mbuf.buf, *buf = p, - *e = p + buf_len; - unsigned *sizep = (unsigned *) &p[1]; /* Size ptr for defragmented frames */ - int ok, reass = buf_len > 0 && mg_is_ws_fragment(p[0]) && - !(nc->flags & MG_F_WEBSOCKET_NO_DEFRAG); - - /* If that's a continuation frame that must be reassembled, handle it */ - if (reass && !mg_is_ws_first_fragment(p[0]) && - buf_len >= 1 + sizeof(*sizep) && buf_len >= 1 + sizeof(*sizep) + *sizep) { - buf += 1 + sizeof(*sizep) + *sizep; - buf_len -= 1 + sizeof(*sizep) + *sizep; - } - - if (buf_len >= 2) { - len = buf[1] & 127; - mask_len = buf[1] & 128 ? 4 : 0; - if (len < 126 && buf_len >= mask_len) { - data_len = len; - header_len = 2 + mask_len; - } else if (len == 126 && buf_len >= 4 + mask_len) { - header_len = 4 + mask_len; - data_len = ntohs(*(uint16_t *) &buf[2]); - } else if (buf_len >= 10 + mask_len) { - header_len = 10 + mask_len; - data_len = (((uint64_t) ntohl(*(uint32_t *) &buf[2])) << 32) + - ntohl(*(uint32_t *) &buf[6]); - } - } - - frame_len = header_len + data_len; - ok = frame_len > 0 && frame_len <= buf_len; - - if (ok) { - struct websocket_message wsm; - - wsm.size = (size_t) data_len; - wsm.data = buf + header_len; - wsm.flags = buf[0]; - - /* Apply mask if necessary */ - if (mask_len > 0) { - for (i = 0; i < data_len; i++) { - buf[i + header_len] ^= (buf + header_len - mask_len)[i % 4]; - } - } - - if (reass) { - /* On first fragmented frame, nullify size */ - if (mg_is_ws_first_fragment(wsm.flags)) { - mbuf_resize(&nc->recv_mbuf, nc->recv_mbuf.size + sizeof(*sizep)); - p[0] &= ~0x0f; /* Next frames will be treated as continuation */ - buf = p + 1 + sizeof(*sizep); - *sizep = 0; /* TODO(lsm): fix. this can stomp over frame data */ - } - - /* Append this frame to the reassembled buffer */ - memmove(buf, wsm.data, e - wsm.data); - (*sizep) += wsm.size; - nc->recv_mbuf.len -= wsm.data - buf; - - /* On last fragmented frame - call user handler and remove data */ - if (wsm.flags & 0x80) { - wsm.data = p + 1 + sizeof(*sizep); - wsm.size = *sizep; - mg_handle_incoming_websocket_frame(nc, &wsm); - mbuf_remove(&nc->recv_mbuf, 1 + sizeof(*sizep) + *sizep); - } - } else { - /* TODO(lsm): properly handle OOB control frames during defragmentation */ - mg_handle_incoming_websocket_frame(nc, &wsm); - mbuf_remove(&nc->recv_mbuf, (size_t) frame_len); /* Cleanup frame */ - } - - /* If client closes, close too */ - if ((buf[0] & 0x0f) == WEBSOCKET_OP_CLOSE) { - nc->flags |= MG_F_SEND_AND_CLOSE; - } - } - - return ok; -} - -struct ws_mask_ctx { - size_t pos; /* zero means unmasked */ - uint32_t mask; -}; - -static uint32_t mg_ws_random_mask(void) { - uint32_t mask; -/* - * The spec requires WS client to generate hard to - * guess mask keys. From RFC6455, Section 5.3: - * - * The unpredictability of the masking key is essential to prevent - * authors of malicious applications from selecting the bytes that appear on - * the wire. - * - * Hence this feature is essential when the actual end user of this API - * is untrusted code that wouldn't have access to a lower level net API - * anyway (e.g. web browsers). Hence this feature is low prio for most - * mongoose use cases and thus can be disabled, e.g. when porting to a platform - * that lacks random(). - */ -#ifdef MG_DISABLE_WS_RANDOM_MASK - mask = 0xefbeadde; /* generated with a random number generator, I swear */ -#else - if (sizeof(long) >= 4) { - mask = (uint32_t) random(); - } else if (sizeof(long) == 2) { - mask = (uint32_t) random() << 16 | (uint32_t) random(); - } -#endif - return mask; -} - -static void mg_send_ws_header(struct mg_connection *nc, int op, size_t len, - struct ws_mask_ctx *ctx) { - int header_len; - unsigned char header[10]; - - header[0] = (op & WEBSOCKET_DONT_FIN ? 0x0 : 0x80) + (op & 0x0f); - if (len < 126) { - header[1] = len; - header_len = 2; - } else if (len < 65535) { - uint16_t tmp = htons((uint16_t) len); - header[1] = 126; - memcpy(&header[2], &tmp, sizeof(tmp)); - header_len = 4; - } else { - uint32_t tmp; - header[1] = 127; - tmp = htonl((uint32_t)((uint64_t) len >> 32)); - memcpy(&header[2], &tmp, sizeof(tmp)); - tmp = htonl((uint32_t)(len & 0xffffffff)); - memcpy(&header[6], &tmp, sizeof(tmp)); - header_len = 10; - } - - /* client connections enable masking */ - if (nc->listener == NULL) { - header[1] |= 1 << 7; /* set masking flag */ - mg_send(nc, header, header_len); - ctx->mask = mg_ws_random_mask(); - mg_send(nc, &ctx->mask, sizeof(ctx->mask)); - ctx->pos = nc->send_mbuf.len; - } else { - mg_send(nc, header, header_len); - ctx->pos = 0; - } -} - -static void mg_ws_mask_frame(struct mbuf *mbuf, struct ws_mask_ctx *ctx) { - size_t i; - if (ctx->pos == 0) return; - for (i = 0; i < (mbuf->len - ctx->pos); i++) { - mbuf->buf[ctx->pos + i] ^= ((char *) &ctx->mask)[i % 4]; - } -} - -void mg_send_websocket_frame(struct mg_connection *nc, int op, const void *data, - size_t len) { - struct ws_mask_ctx ctx; - DBG(("%p %d %d", nc, op, (int) len)); - mg_send_ws_header(nc, op, len, &ctx); - mg_send(nc, data, len); - - mg_ws_mask_frame(&nc->send_mbuf, &ctx); - - if (op == WEBSOCKET_OP_CLOSE) { - nc->flags |= MG_F_SEND_AND_CLOSE; - } -} - -void mg_send_websocket_framev(struct mg_connection *nc, int op, - const struct mg_str *strv, int strvcnt) { - struct ws_mask_ctx ctx; - int i; - int len = 0; - for (i = 0; i < strvcnt; i++) { - len += strv[i].len; - } - - mg_send_ws_header(nc, op, len, &ctx); - - for (i = 0; i < strvcnt; i++) { - mg_send(nc, strv[i].p, strv[i].len); - } - - mg_ws_mask_frame(&nc->send_mbuf, &ctx); - - if (op == WEBSOCKET_OP_CLOSE) { - nc->flags |= MG_F_SEND_AND_CLOSE; - } -} - -void mg_printf_websocket_frame(struct mg_connection *nc, int op, - const char *fmt, ...) { - char mem[MG_VPRINTF_BUFFER_SIZE], *buf = mem; - va_list ap; - int len; - - va_start(ap, fmt); - if ((len = mg_avprintf(&buf, sizeof(mem), fmt, ap)) > 0) { - mg_send_websocket_frame(nc, op, buf, len); - } - va_end(ap); - - if (buf != mem && buf != NULL) { - MG_FREE(buf); - } -} - -static void mg_websocket_handler(struct mg_connection *nc, int ev, - void *ev_data) { - mg_call(nc, nc->handler, ev, ev_data); - - switch (ev) { - case MG_EV_RECV: - do { - } while (mg_deliver_websocket_data(nc)); - break; - case MG_EV_POLL: - /* Ping idle websocket connections */ - { - time_t now = *(time_t *) ev_data; - if (nc->flags & MG_F_IS_WEBSOCKET && - now > nc->last_io_time + MG_WEBSOCKET_PING_INTERVAL_SECONDS) { - mg_send_websocket_frame(nc, WEBSOCKET_OP_PING, "", 0); - } - } - break; - default: - break; - } -} - -static void mg_ws_handshake(struct mg_connection *nc, - const struct mg_str *key) { - static const char *magic = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"; - char buf[MG_VPRINTF_BUFFER_SIZE], sha[20], b64_sha[sizeof(sha) * 2]; - cs_sha1_ctx sha_ctx; - - snprintf(buf, sizeof(buf), "%.*s%s", (int) key->len, key->p, magic); - - cs_sha1_init(&sha_ctx); - cs_sha1_update(&sha_ctx, (unsigned char *) buf, strlen(buf)); - cs_sha1_final((unsigned char *) sha, &sha_ctx); - - mg_base64_encode((unsigned char *) sha, sizeof(sha), b64_sha); - mg_printf(nc, "%s%s%s", - "HTTP/1.1 101 Switching Protocols\r\n" - "Upgrade: websocket\r\n" - "Connection: Upgrade\r\n" - "Sec-WebSocket-Accept: ", - b64_sha, "\r\n\r\n"); - DBG(("%p %.*s %s", nc, (int) key->len, key->p, b64_sha)); -} - -#endif /* MG_DISABLE_HTTP_WEBSOCKET */ - -#ifndef MG_DISABLE_FILESYSTEM -static void mg_http_transfer_file_data(struct mg_connection *nc) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - char buf[MG_MAX_HTTP_SEND_MBUF]; - int64_t left = pd->file.cl - pd->file.sent; - size_t n = 0, to_read = 0; - - if (pd->file.type == DATA_FILE) { - struct mbuf *io = &nc->send_mbuf; - if (io->len < sizeof(buf)) { - to_read = sizeof(buf) - io->len; - } - - if (left > 0 && to_read > (size_t) left) { - to_read = left; - } - - if (to_read == 0) { - /* Rate limiting. send_mbuf is too full, wait until it's drained. */ - } else if (pd->file.sent < pd->file.cl && - (n = fread(buf, 1, to_read, pd->file.fp)) > 0) { - mg_send(nc, buf, n); - pd->file.sent += n; - } else { - if (!pd->file.keepalive) nc->flags |= MG_F_SEND_AND_CLOSE; - mg_http_free_proto_data_file(&pd->file); - } - } else if (pd->file.type == DATA_PUT) { - struct mbuf *io = &nc->recv_mbuf; - size_t to_write = - left <= 0 ? 0 : left < (int64_t) io->len ? (size_t) left : io->len; - size_t n = fwrite(io->buf, 1, to_write, pd->file.fp); - if (n > 0) { - mbuf_remove(io, n); - pd->file.sent += n; - } - if (n == 0 || pd->file.sent >= pd->file.cl) { - if (!pd->file.keepalive) nc->flags |= MG_F_SEND_AND_CLOSE; - mg_http_free_proto_data_file(&pd->file); - } - } -#ifndef MG_DISABLE_CGI - else if (pd->cgi.cgi_nc != NULL) { - /* This is POST data that needs to be forwarded to the CGI process */ - if (pd->cgi.cgi_nc != NULL) { - mg_forward(nc, pd->cgi.cgi_nc); - } else { - nc->flags |= MG_F_SEND_AND_CLOSE; - } - } -#endif -} -#endif /* MG_DISABLE_FILESYSTEM */ - -/* - * Parse chunked-encoded buffer. Return 0 if the buffer is not encoded, or - * if it's incomplete. If the chunk is fully buffered, return total number of - * bytes in a chunk, and store data in `data`, `data_len`. - */ -static size_t mg_http_parse_chunk(char *buf, size_t len, char **chunk_data, - size_t *chunk_len) { - unsigned char *s = (unsigned char *) buf; - size_t n = 0; /* scanned chunk length */ - size_t i = 0; /* index in s */ - - /* Scan chunk length. That should be a hexadecimal number. */ - while (i < len && isxdigit(s[i])) { - n *= 16; - n += (s[i] >= '0' && s[i] <= '9') ? s[i] - '0' : tolower(s[i]) - 'a' + 10; - i++; - } - - /* Skip new line */ - if (i == 0 || i + 2 > len || s[i] != '\r' || s[i + 1] != '\n') { - return 0; - } - i += 2; - - /* Record where the data is */ - *chunk_data = (char *) s + i; - *chunk_len = n; - - /* Skip data */ - i += n; - - /* Skip new line */ - if (i == 0 || i + 2 > len || s[i] != '\r' || s[i + 1] != '\n') { - return 0; - } - return i + 2; -} - -MG_INTERNAL size_t mg_handle_chunked(struct mg_connection *nc, - struct http_message *hm, char *buf, - size_t blen) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - char *data; - size_t i, n, data_len, body_len, zero_chunk_received = 0; - - /* Find out piece of received data that is not yet reassembled */ - body_len = pd->chunk.body_len; - assert(blen >= body_len); - - /* Traverse all fully buffered chunks */ - for (i = body_len; - (n = mg_http_parse_chunk(buf + i, blen - i, &data, &data_len)) > 0; - i += n) { - /* Collapse chunk data to the rest of HTTP body */ - memmove(buf + body_len, data, data_len); - body_len += data_len; - hm->body.len = body_len; - - if (data_len == 0) { - zero_chunk_received = 1; - i += n; - break; - } - } - - if (i > body_len) { - /* Shift unparsed content to the parsed body */ - assert(i <= blen); - memmove(buf + body_len, buf + i, blen - i); - memset(buf + body_len + blen - i, 0, i - body_len); - nc->recv_mbuf.len -= i - body_len; - pd->chunk.body_len = body_len; - - /* Send MG_EV_HTTP_CHUNK event */ - nc->flags &= ~MG_F_DELETE_CHUNK; - mg_call(nc, nc->handler, MG_EV_HTTP_CHUNK, hm); - - /* Delete processed data if user set MG_F_DELETE_CHUNK flag */ - if (nc->flags & MG_F_DELETE_CHUNK) { - memset(buf, 0, body_len); - memmove(buf, buf + body_len, blen - i); - nc->recv_mbuf.len -= body_len; - hm->body.len = pd->chunk.body_len = 0; - } - - if (zero_chunk_received) { - hm->message.len = pd->chunk.body_len + blen - i; - } - } - - return body_len; -} - -static mg_event_handler_t mg_http_get_endpoint_handler( - struct mg_connection *nc, struct mg_str *uri_path) { - struct mg_http_proto_data *pd; - mg_event_handler_t ret = NULL; - int matched, matched_max = 0; - struct mg_http_endpoint *ep; - - if (nc == NULL) { - return NULL; - } - - pd = mg_http_get_proto_data(nc); - - ep = pd->endpoints; - while (ep != NULL) { - const struct mg_str name_s = {ep->name, ep->name_len}; - if ((matched = mg_match_prefix_n(name_s, *uri_path)) != -1) { - if (matched > matched_max) { - /* Looking for the longest suitable handler */ - ret = ep->handler; - matched_max = matched; - } - } - - ep = ep->next; - } - - return ret; -} - -static void mg_http_call_endpoint_handler(struct mg_connection *nc, int ev, - struct http_message *hm) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - - if (pd->endpoint_handler == NULL || ev == MG_EV_HTTP_REQUEST) { - pd->endpoint_handler = - ev == MG_EV_HTTP_REQUEST - ? mg_http_get_endpoint_handler(nc->listener, &hm->uri) - : NULL; - } - mg_call(nc, pd->endpoint_handler ? pd->endpoint_handler : nc->handler, ev, - hm); -} - -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART -static void mg_http_multipart_continue(struct mg_connection *nc); - -static void mg_http_multipart_begin(struct mg_connection *nc, - struct http_message *hm, int req_len); - -#endif - -/* - * lx106 compiler has a bug (TODO(mkm) report and insert tracking bug here) - * If a big structure is declared in a big function, lx106 gcc will make it - * even bigger (round up to 4k, from 700 bytes of actual size). - */ -#ifdef __xtensa__ -static void mg_http_handler2(struct mg_connection *nc, int ev, void *ev_data, - struct http_message *hm) __attribute__((noinline)); - -void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) { - struct http_message hm; - mg_http_handler2(nc, ev, ev_data, &hm); -} - -static void mg_http_handler2(struct mg_connection *nc, int ev, void *ev_data, - struct http_message *hm) { -#else /* !__XTENSA__ */ -void mg_http_handler(struct mg_connection *nc, int ev, void *ev_data) { - struct http_message shm; - struct http_message *hm = &shm; -#endif /* __XTENSA__ */ - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - struct mbuf *io = &nc->recv_mbuf; - int req_len; - const int is_req = (nc->listener != NULL); -#ifndef MG_DISABLE_HTTP_WEBSOCKET - struct mg_str *vec; -#endif - if (ev == MG_EV_CLOSE) { -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART - if (pd->mp_stream.boundary != NULL) { - /* - * Multipart message is in progress, but we get close - * MG_EV_HTTP_PART_END with error flag - */ - struct mg_http_multipart_part mp; - memset(&mp, 0, sizeof(mp)); - - mp.status = -1; - mp.var_name = pd->mp_stream.var_name; - mp.file_name = pd->mp_stream.file_name; - mg_call(nc, (pd->endpoint_handler ? pd->endpoint_handler : nc->handler), - MG_EV_HTTP_PART_END, &mp); - } else -#endif - if (io->len > 0 && mg_parse_http(io->buf, io->len, hm, is_req) > 0) { - /* - * For HTTP messages without Content-Length, always send HTTP message - * before MG_EV_CLOSE message. - */ - int ev2 = is_req ? MG_EV_HTTP_REQUEST : MG_EV_HTTP_REPLY; - hm->message.len = io->len; - hm->body.len = io->buf + io->len - hm->body.p; - mg_http_call_endpoint_handler(nc, ev2, hm); - } - } - -#ifndef MG_DISABLE_FILESYSTEM - if (pd->file.fp != NULL) { - mg_http_transfer_file_data(nc); - } -#endif - - mg_call(nc, nc->handler, ev, ev_data); - - if (ev == MG_EV_RECV) { - struct mg_str *s; - -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART - if (pd->mp_stream.boundary != NULL) { - mg_http_multipart_continue(nc); - return; - } -#endif /* MG_ENABLE_HTTP_STREAMING_MULTIPART */ - - req_len = mg_parse_http(io->buf, io->len, hm, is_req); - - if (req_len > 0 && - (s = mg_get_http_header(hm, "Transfer-Encoding")) != NULL && - mg_vcasecmp(s, "chunked") == 0) { - mg_handle_chunked(nc, hm, io->buf + req_len, io->len - req_len); - } - -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART - if (req_len > 0 && (s = mg_get_http_header(hm, "Content-Type")) != NULL && - s->len >= 9 && strncmp(s->p, "multipart", 9) == 0) { - mg_http_multipart_begin(nc, hm, req_len); - mg_http_multipart_continue(nc); - return; - } -#endif /* MG_ENABLE_HTTP_STREAMING_MULTIPART */ - - /* TODO(alashkin): refactor this ifelseifelseifelseifelse */ - if ((req_len < 0 || - (req_len == 0 && io->len >= MG_MAX_HTTP_REQUEST_SIZE))) { - DBG(("invalid request")); - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - } else if (req_len == 0) { - /* Do nothing, request is not yet fully buffered */ - } -#ifndef MG_DISABLE_HTTP_WEBSOCKET - else if (nc->listener == NULL && - mg_get_http_header(hm, "Sec-WebSocket-Accept")) { - /* We're websocket client, got handshake response from server. */ - /* TODO(lsm): check the validity of accept Sec-WebSocket-Accept */ - mbuf_remove(io, req_len); - nc->proto_handler = mg_websocket_handler; - nc->flags |= MG_F_IS_WEBSOCKET; - mg_call(nc, nc->handler, MG_EV_WEBSOCKET_HANDSHAKE_DONE, NULL); - mg_websocket_handler(nc, MG_EV_RECV, ev_data); - } else if (nc->listener != NULL && - (vec = mg_get_http_header(hm, "Sec-WebSocket-Key")) != NULL) { - /* This is a websocket request. Switch protocol handlers. */ - mbuf_remove(io, req_len); - nc->proto_handler = mg_websocket_handler; - nc->flags |= MG_F_IS_WEBSOCKET; - - /* Send handshake */ - mg_call(nc, nc->handler, MG_EV_WEBSOCKET_HANDSHAKE_REQUEST, hm); - if (!(nc->flags & MG_F_CLOSE_IMMEDIATELY)) { - if (nc->send_mbuf.len == 0) { - mg_ws_handshake(nc, vec); - } - mg_call(nc, nc->handler, MG_EV_WEBSOCKET_HANDSHAKE_DONE, NULL); - mg_websocket_handler(nc, MG_EV_RECV, ev_data); - } -#endif /* MG_DISABLE_HTTP_WEBSOCKET */ - } else if (hm->message.len <= io->len) { - int trigger_ev = nc->listener ? MG_EV_HTTP_REQUEST : MG_EV_HTTP_REPLY; - -/* Whole HTTP message is fully buffered, call event handler */ - -#ifdef MG_ENABLE_JAVASCRIPT - v7_val_t v1, v2, headers, req, args, res; - struct v7 *v7 = nc->mgr->v7; - const char *ev_name = trigger_ev == MG_EV_HTTP_REPLY ? "onsnd" : "onrcv"; - int i, js_callback_handled_request = 0; - - if (v7 != NULL) { - /* Lookup JS callback */ - v1 = v7_get(v7, v7_get_global(v7), "Http", ~0); - v2 = v7_get(v7, v1, ev_name, ~0); - - /* Create callback params. TODO(lsm): own/disown those */ - args = v7_mk_array(v7); - req = v7_mk_object(v7); - headers = v7_mk_object(v7); - - /* Populate request object */ - v7_set(v7, req, "method", ~0, - v7_mk_string(v7, hm->method.p, hm->method.len, 1)); - v7_set(v7, req, "uri", ~0, v7_mk_string(v7, hm->uri.p, hm->uri.len, 1)); - v7_set(v7, req, "body", ~0, - v7_mk_string(v7, hm->body.p, hm->body.len, 1)); - v7_set(v7, req, "headers", ~0, headers); - for (i = 0; hm->header_names[i].len > 0; i++) { - const struct mg_str *name = &hm->header_names[i]; - const struct mg_str *value = &hm->header_values[i]; - v7_set(v7, headers, name->p, name->len, - v7_mk_string(v7, value->p, value->len, 1)); - } - - /* Invoke callback. TODO(lsm): report errors */ - v7_array_push(v7, args, v7_mk_foreign(nc)); - v7_array_push(v7, args, req); - if (v7_apply(v7, v2, v7_mk_undefined(), args, &res) == V7_OK && - v7_is_truthy(v7, res)) { - js_callback_handled_request++; - } - } - - /* If JS callback returns true, stop request processing */ - if (js_callback_handled_request) { - nc->flags |= MG_F_SEND_AND_CLOSE; - } else { - mg_http_call_endpoint_handler(nc, trigger_ev, hm); - } -#else - mg_http_call_endpoint_handler(nc, trigger_ev, hm); -#endif - mbuf_remove(io, hm->message.len); - } - } - (void) pd; -} - -static size_t mg_get_line_len(const char *buf, size_t buf_len) { - size_t len = 0; - while (len < buf_len && buf[len] != '\n') len++; - return len == buf_len ? 0 : len + 1; -} - -#ifdef MG_ENABLE_HTTP_STREAMING_MULTIPART -static void mg_http_multipart_begin(struct mg_connection *nc, - struct http_message *hm, int req_len) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - struct mg_str *ct; - struct mbuf *io = &nc->recv_mbuf; - - char boundary[100]; - int boundary_len; - - if (nc->listener == NULL) { - /* No streaming for replies now */ - goto exit_mp; - } - - ct = mg_get_http_header(hm, "Content-Type"); - if (ct == NULL) { - /* We need more data - or it isn't multipart mesage */ - goto exit_mp; - } - - /* Content-type should start with "multipart" */ - if (ct->len < 9 || strncmp(ct->p, "multipart", 9) != 0) { - goto exit_mp; - } - - boundary_len = - mg_http_parse_header(ct, "boundary", boundary, sizeof(boundary)); - if (boundary_len == 0) { - /* - * Content type is multipart, but there is no boundary, - * probably malformed request - */ - nc->flags = MG_F_CLOSE_IMMEDIATELY; - DBG(("invalid request")); - goto exit_mp; - } - - /* If we reach this place - that is multipart request */ - - if (pd->mp_stream.boundary != NULL) { - /* - * Another streaming request was in progress, - * looks like protocol error - */ - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - } else { - pd->mp_stream.boundary = strdup(boundary); - pd->mp_stream.boundary_len = strlen(boundary); - pd->mp_stream.var_name = pd->mp_stream.file_name = NULL; - - pd->endpoint_handler = mg_http_get_endpoint_handler(nc->listener, &hm->uri); - if (pd->endpoint_handler == NULL) { - pd->endpoint_handler = nc->handler; - } - - mg_call(nc, pd->endpoint_handler, MG_EV_HTTP_MULTIPART_REQUEST, hm); - - mbuf_remove(io, req_len); - } -exit_mp: - ; -} - -#define CONTENT_DISPOSITION "Content-Disposition: " - -static void mg_http_multipart_call_handler(struct mg_connection *c, int ev, - const char *data, size_t data_len) { - struct mg_http_multipart_part mp; - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - memset(&mp, 0, sizeof(mp)); - - mp.var_name = pd->mp_stream.var_name; - mp.file_name = pd->mp_stream.file_name; - mp.user_data = pd->mp_stream.user_data; - mp.data.p = data; - mp.data.len = data_len; - mg_call(c, pd->endpoint_handler, ev, &mp); - pd->mp_stream.user_data = mp.user_data; -} - -static int mg_http_multipart_got_chunk(struct mg_connection *c) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - struct mbuf *io = &c->recv_mbuf; - - mg_http_multipart_call_handler(c, MG_EV_HTTP_PART_DATA, io->buf, - pd->mp_stream.prev_io_len); - mbuf_remove(io, pd->mp_stream.prev_io_len); - pd->mp_stream.prev_io_len = 0; - pd->mp_stream.state = MPS_WAITING_FOR_CHUNK; - - return 0; -} - -static int mg_http_multipart_finalize(struct mg_connection *c) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - - mg_http_multipart_call_handler(c, MG_EV_HTTP_PART_END, NULL, 0); - mg_http_free_proto_data_mp_stream(&pd->mp_stream); - pd->mp_stream.state = MPS_FINISHED; - - return 1; -} - -static int mg_http_multipart_wait_for_boundary(struct mg_connection *c) { - const char *boundary; - struct mbuf *io = &c->recv_mbuf; - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - - if ((int) io->len < pd->mp_stream.boundary_len + 2) { - return 0; - } - - boundary = c_strnstr(io->buf, pd->mp_stream.boundary, io->len); - if (boundary != NULL) { - if (io->len - (boundary - io->buf) < 4) { - return 0; - } - if (memcmp(boundary + pd->mp_stream.boundary_len, "--", 2) == 0) { - pd->mp_stream.state = MPS_FINALIZE; - } else { - pd->mp_stream.state = MPS_GOT_BOUNDARY; - } - } else { - return 0; - } - - return 1; -} - -static int mg_http_multipart_process_boundary(struct mg_connection *c) { - int data_size; - const char *boundary, *block_begin; - struct mbuf *io = &c->recv_mbuf; - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - char file_name[100], var_name[100]; - int line_len; - boundary = c_strnstr(io->buf, pd->mp_stream.boundary, io->len); - block_begin = boundary + pd->mp_stream.boundary_len + 2; - data_size = io->len - (block_begin - io->buf); - - while (data_size > 0 && - (line_len = mg_get_line_len(block_begin, data_size)) != 0) { - if (line_len > (int) sizeof(CONTENT_DISPOSITION) && - mg_ncasecmp(block_begin, CONTENT_DISPOSITION, - sizeof(CONTENT_DISPOSITION) - 1) == 0) { - struct mg_str header; - - header.p = block_begin + sizeof(CONTENT_DISPOSITION) - 1; - header.len = line_len - sizeof(CONTENT_DISPOSITION) - 1; - mg_http_parse_header(&header, "name", var_name, sizeof(var_name) - 2); - mg_http_parse_header(&header, "filename", file_name, - sizeof(file_name) - 2); - block_begin += line_len; - data_size -= line_len; - continue; - } - - if (line_len == 2 && mg_ncasecmp(block_begin, "\r\n", 2) == 0) { - mbuf_remove(io, block_begin - io->buf + 2); - - if (pd->mp_stream.processing_part != 0) { - mg_http_multipart_call_handler(c, MG_EV_HTTP_PART_END, NULL, 0); - } - - free((void *) pd->mp_stream.file_name); - pd->mp_stream.file_name = strdup(file_name); - free((void *) pd->mp_stream.var_name); - pd->mp_stream.var_name = strdup(var_name); - - mg_http_multipart_call_handler(c, MG_EV_HTTP_PART_BEGIN, NULL, 0); - pd->mp_stream.state = MPS_WAITING_FOR_CHUNK; - pd->mp_stream.processing_part++; - return 1; - } - - block_begin += line_len; - } - - pd->mp_stream.state = MPS_WAITING_FOR_BOUNDARY; - - return 0; -} - -static int mg_http_multipart_continue_wait_for_chunk(struct mg_connection *c) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - struct mbuf *io = &c->recv_mbuf; - - const char *boundary; - if ((int) io->len < pd->mp_stream.boundary_len + 6 /* \r\n, --, -- */) { - return 0; - } - - boundary = c_strnstr(io->buf, pd->mp_stream.boundary, io->len); - if (boundary == NULL && pd->mp_stream.prev_io_len == 0) { - pd->mp_stream.prev_io_len = io->len; - return 0; - } else if (boundary == NULL && - (int) io->len > - pd->mp_stream.prev_io_len + pd->mp_stream.boundary_len + 4) { - pd->mp_stream.state = MPS_GOT_CHUNK; - return 1; - } else if (boundary != NULL) { - int data_size = (boundary - io->buf - 4); - mg_http_multipart_call_handler(c, MG_EV_HTTP_PART_DATA, io->buf, data_size); - mbuf_remove(io, (boundary - io->buf)); - pd->mp_stream.prev_io_len = 0; - pd->mp_stream.state = MPS_WAITING_FOR_BOUNDARY; - return 1; - } else { - return 0; - } -} - -static void mg_http_multipart_continue(struct mg_connection *c) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(c); - while (1) { - switch (pd->mp_stream.state) { - case MPS_BEGIN: { - pd->mp_stream.state = MPS_WAITING_FOR_BOUNDARY; - break; - } - case MPS_WAITING_FOR_BOUNDARY: { - if (mg_http_multipart_wait_for_boundary(c) == 0) { - return; - } - break; - } - case MPS_GOT_BOUNDARY: { - if (mg_http_multipart_process_boundary(c) == 0) { - return; - } - break; - } - case MPS_WAITING_FOR_CHUNK: { - if (mg_http_multipart_continue_wait_for_chunk(c) == 0) { - return; - } - break; - } - case MPS_GOT_CHUNK: { - if (mg_http_multipart_got_chunk(c) == 0) { - return; - } - break; - } - case MPS_FINALIZE: { - if (mg_http_multipart_finalize(c) == 0) { - return; - } - break; - } - case MPS_FINISHED: { - mbuf_remove(&c->recv_mbuf, c->recv_mbuf.len); - return; - } - } - } -} - -struct file_upload_state { - char *lfn; - size_t num_recd; - FILE *fp; -}; - -void mg_file_upload_handler(struct mg_connection *nc, int ev, void *ev_data, - mg_fu_fname_fn local_name_fn) { - switch (ev) { - case MG_EV_HTTP_PART_BEGIN: { - struct mg_http_multipart_part *mp = - (struct mg_http_multipart_part *) ev_data; - struct file_upload_state *fus = - (struct file_upload_state *) calloc(1, sizeof(*fus)); - mp->user_data = NULL; - - struct mg_str lfn = local_name_fn(nc, mg_mk_str(mp->file_name)); - if (lfn.p == NULL || lfn.len == 0) { - LOG(LL_ERROR, ("%p Not allowed to upload %s", nc, mp->file_name)); - mg_printf(nc, - "HTTP/1.1 403 Not Allowed\r\n" - "Content-Type: text/plain\r\n" - "Connection: close\r\n\r\n" - "Not allowed to upload %s\r\n", - mp->file_name); - nc->flags |= MG_F_SEND_AND_CLOSE; - return; - } - fus->lfn = (char *) malloc(lfn.len + 1); - memcpy(fus->lfn, lfn.p, lfn.len); - fus->lfn[lfn.len] = '\0'; - if (lfn.p != mp->file_name) free((char *) lfn.p); - LOG(LL_DEBUG, - ("%p Receiving file %s -> %s", nc, mp->file_name, fus->lfn)); - fus->fp = fopen(fus->lfn, "w"); - if (fus->fp == NULL) { - mg_printf(nc, - "HTTP/1.1 500 Internal Server Error\r\n" - "Content-Type: text/plain\r\n" - "Connection: close\r\n\r\n"); - LOG(LL_ERROR, ("Failed to open %s: %d\n", fus->lfn, errno)); - mg_printf(nc, "Failed to open %s: %d\n", fus->lfn, errno); - /* Do not close the connection just yet, discard remainder of the data. - * This is because at the time of writing some browsers (Chrome) fail to - * render response before all the data is sent. */ - } - mp->user_data = (void *) fus; - break; - } - case MG_EV_HTTP_PART_DATA: { - struct mg_http_multipart_part *mp = - (struct mg_http_multipart_part *) ev_data; - struct file_upload_state *fus = - (struct file_upload_state *) mp->user_data; - if (fus == NULL || fus->fp == NULL) break; - if (fwrite(mp->data.p, 1, mp->data.len, fus->fp) != mp->data.len) { - LOG(LL_ERROR, ("Failed to write to %s: %d, wrote %d", fus->lfn, errno, - (int) fus->num_recd)); - if (errno == ENOSPC -#ifdef SPIFFS_ERR_FULL - || errno == SPIFFS_ERR_FULL -#endif - ) { - mg_printf(nc, - "HTTP/1.1 413 Payload Too Large\r\n" - "Content-Type: text/plain\r\n" - "Connection: close\r\n\r\n"); - mg_printf(nc, "Failed to write to %s: no space left; wrote %d\r\n", - fus->lfn, (int) fus->num_recd); - } else { - mg_printf(nc, - "HTTP/1.1 500 Internal Server Error\r\n" - "Content-Type: text/plain\r\n" - "Connection: close\r\n\r\n"); - mg_printf(nc, "Failed to write to %s: %d, wrote %d", mp->file_name, - errno, (int) fus->num_recd); - } - fclose(fus->fp); - remove(fus->lfn); - fus->fp = NULL; - /* Do not close the connection just yet, discard remainder of the data. - * This is because at the time of writing some browsers (Chrome) fail to - * render response before all the data is sent. */ - return; - } - fus->num_recd += mp->data.len; - LOG(LL_DEBUG, ("%p rec'd %d bytes, %d total", nc, (int) mp->data.len, - (int) fus->num_recd)); - break; - } - case MG_EV_HTTP_PART_END: { - struct mg_http_multipart_part *mp = - (struct mg_http_multipart_part *) ev_data; - struct file_upload_state *fus = - (struct file_upload_state *) mp->user_data; - if (fus == NULL) break; - if (mp->status >= 0 && fus->fp != NULL) { - LOG(LL_DEBUG, ("%p Uploaded %s (%s), %d bytes", nc, mp->file_name, - fus->lfn, (int) fus->num_recd)); - mg_printf(nc, - "HTTP/1.1 200 OK\r\n" - "Content-Type: text/plain\r\n" - "Connection: close\r\n\r\n" - "Ok, %s - %d bytes.\r\n", - mp->file_name, (int) fus->num_recd); - } else { - LOG(LL_ERROR, ("Failed to store %s (%s)", mp->file_name, fus->lfn)); - /* - * mp->status < 0 means connection was terminated, so no reason to send - * HTTP reply - */ - } - if (fus->fp != NULL) fclose(fus->fp); - free(fus->lfn); - free(fus); - mp->user_data = NULL; - nc->flags |= MG_F_SEND_AND_CLOSE; - break; - } - } -} - -#endif /* MG_ENABLE_HTTP_STREAMING_MULTIPART */ - -void mg_set_protocol_http_websocket(struct mg_connection *nc) { - nc->proto_handler = mg_http_handler; -} - -#ifndef MG_DISABLE_HTTP_WEBSOCKET - -void mg_send_websocket_handshake2(struct mg_connection *nc, const char *path, - const char *host, const char *protocol, - const char *extra_headers) { - /* pretty poor source of randomness, TODO fix */ - unsigned long random = (unsigned long) path; - char key[sizeof(random) * 3]; - - mg_base64_encode((unsigned char *) &random, sizeof(random), key); - mg_printf(nc, - "GET %s HTTP/1.1\r\n" - "Upgrade: websocket\r\n" - "Connection: Upgrade\r\n" - "Sec-WebSocket-Version: 13\r\n" - "Sec-WebSocket-Key: %s\r\n", - path, key); - - /* TODO(mkm): take default hostname from http proto data if host == NULL */ - if (host != MG_WS_NO_HOST_HEADER_MAGIC) { - mg_printf(nc, "Host: %s\r\n", host); - } - if (protocol != NULL) { - mg_printf(nc, "Sec-WebSocket-Protocol: %s\r\n", protocol); - } - if (extra_headers != NULL) { - mg_printf(nc, "%s", extra_headers); - } - mg_printf(nc, "\r\n"); -} - -void mg_send_websocket_handshake(struct mg_connection *nc, const char *path, - const char *extra_headers) { - mg_send_websocket_handshake2(nc, path, MG_WS_NO_HOST_HEADER_MAGIC, NULL, - extra_headers); -} - -#endif /* MG_DISABLE_HTTP_WEBSOCKET */ - -void mg_send_response_line(struct mg_connection *nc, int status_code, - const char *extra_headers) { - const char *status_message = "OK"; - switch (status_code) { - case 206: - status_message = "Partial Content"; - break; - case 301: - status_message = "Moved"; - break; - case 302: - status_message = "Found"; - break; - case 401: - status_message = "Unauthorized"; - break; - case 403: - status_message = "Forbidden"; - break; - case 404: - status_message = "Not Found"; - break; - case 416: - status_message = "Requested range not satisfiable"; - break; - case 418: - status_message = "I'm a teapot"; - break; - case 500: - status_message = "Internal Server Error"; - break; - } - mg_printf(nc, "HTTP/1.1 %d %s\r\nServer: %s\r\n", status_code, status_message, - mg_version_header); - if (extra_headers != NULL) { - mg_printf(nc, "%s\r\n", extra_headers); - } -} - -void mg_send_head(struct mg_connection *c, int status_code, - int64_t content_length, const char *extra_headers) { - mg_send_response_line(c, status_code, extra_headers); - if (content_length < 0) { - mg_printf(c, "%s", "Transfer-Encoding: chunked\r\n"); - } else { - mg_printf(c, "Content-Length: %" INT64_FMT "\r\n", content_length); - } - mg_send(c, "\r\n", 2); -} - -#ifdef MG_DISABLE_FILESYSTEM -void mg_serve_http(struct mg_connection *nc, struct http_message *hm, - struct mg_serve_http_opts opts) { - mg_send_head(nc, 501, 0, NULL); -} -#else -static void mg_http_send_error(struct mg_connection *nc, int code, - const char *reason) { - if (!reason) reason = ""; - DBG(("%p %d %s", nc, code, reason)); - mg_send_head(nc, code, strlen(reason), - "Content-Type: text/plain\r\nConnection: close"); - mg_send(nc, reason, strlen(reason)); - nc->flags |= MG_F_SEND_AND_CLOSE; -} -#ifndef MG_DISABLE_SSI -static void mg_send_ssi_file(struct mg_connection *, const char *, FILE *, int, - const struct mg_serve_http_opts *); - -static void mg_send_file_data(struct mg_connection *nc, FILE *fp) { - char buf[BUFSIZ]; - size_t n; - while ((n = fread(buf, 1, sizeof(buf), fp)) > 0) { - mg_send(nc, buf, n); - } -} - -static void mg_do_ssi_include(struct mg_connection *nc, const char *ssi, - char *tag, int include_level, - const struct mg_serve_http_opts *opts) { - char file_name[BUFSIZ], path[MAX_PATH_SIZE], *p; - FILE *fp; - - /* - * sscanf() is safe here, since send_ssi_file() also uses buffer - * of size MG_BUF_LEN to get the tag. So strlen(tag) is always < MG_BUF_LEN. - */ - if (sscanf(tag, " virtual=\"%[^\"]\"", file_name) == 1) { - /* File name is relative to the webserver root */ - snprintf(path, sizeof(path), "%s/%s", opts->document_root, file_name); - } else if (sscanf(tag, " abspath=\"%[^\"]\"", file_name) == 1) { - /* - * File name is relative to the webserver working directory - * or it is absolute system path - */ - snprintf(path, sizeof(path), "%s", file_name); - } else if (sscanf(tag, " file=\"%[^\"]\"", file_name) == 1 || - sscanf(tag, " \"%[^\"]\"", file_name) == 1) { - /* File name is relative to the currect document */ - snprintf(path, sizeof(path), "%s", ssi); - if ((p = strrchr(path, DIRSEP)) != NULL) { - p[1] = '\0'; - } - snprintf(path + strlen(path), sizeof(path) - strlen(path), "%s", file_name); - } else { - mg_printf(nc, "Bad SSI #include: [%s]", tag); - return; - } - - if ((fp = fopen(path, "rb")) == NULL) { - mg_printf(nc, "SSI include error: fopen(%s): %s", path, strerror(errno)); - } else { - mg_set_close_on_exec(fileno(fp)); - if (mg_match_prefix(opts->ssi_pattern, strlen(opts->ssi_pattern), path) > - 0) { - mg_send_ssi_file(nc, path, fp, include_level + 1, opts); - } else { - mg_send_file_data(nc, fp); - } - fclose(fp); - } -} - -#ifndef MG_DISABLE_POPEN -static void do_ssi_exec(struct mg_connection *nc, char *tag) { - char cmd[BUFSIZ]; - FILE *fp; - - if (sscanf(tag, " \"%[^\"]\"", cmd) != 1) { - mg_printf(nc, "Bad SSI #exec: [%s]", tag); - } else if ((fp = popen(cmd, "r")) == NULL) { - mg_printf(nc, "Cannot SSI #exec: [%s]: %s", cmd, strerror(errno)); - } else { - mg_send_file_data(nc, fp); - pclose(fp); - } -} -#endif /* !MG_DISABLE_POPEN */ - -static void mg_do_ssi_call(struct mg_connection *nc, char *tag) { - mg_call(nc, NULL, MG_EV_SSI_CALL, tag); -} - -/* - * SSI directive has the following format: - * - */ -static void mg_send_ssi_file(struct mg_connection *nc, const char *path, - FILE *fp, int include_level, - const struct mg_serve_http_opts *opts) { - static const struct mg_str btag = MG_MK_STR(" */ - buf[i--] = '\0'; - while (i > 0 && buf[i] == ' ') { - buf[i--] = '\0'; - } - - /* Handle known SSI directives */ - if (memcmp(p, d_include.p, d_include.len) == 0) { - mg_do_ssi_include(nc, path, p + d_include.len + 1, include_level, opts); - } else if (memcmp(p, d_call.p, d_call.len) == 0) { - mg_do_ssi_call(nc, p + d_call.len + 1); -#ifndef MG_DISABLE_POPEN - } else if (memcmp(p, d_exec.p, d_exec.len) == 0) { - do_ssi_exec(nc, p + d_exec.len + 1); -#endif - } else { - /* Silently ignore unknown SSI directive. */ - } - len = 0; - } else if (ch == '<') { - in_ssi_tag = 1; - if (len > 0) { - mg_send(nc, buf, (size_t) len); - } - len = 0; - buf[len++] = ch & 0xff; - } else if (in_ssi_tag) { - if (len == (int) btag.len && memcmp(buf, btag.p, btag.len) != 0) { - /* Not an SSI tag */ - in_ssi_tag = 0; - } else if (len == (int) sizeof(buf) - 2) { - mg_printf(nc, "%s: SSI tag is too large", path); - len = 0; - } - buf[len++] = ch & 0xff; - } else { - buf[len++] = ch & 0xff; - if (len == (int) sizeof(buf)) { - mg_send(nc, buf, (size_t) len); - len = 0; - } - } - } - - /* Send the rest of buffered data */ - if (len > 0) { - mg_send(nc, buf, (size_t) len); - } -} - -static void mg_handle_ssi_request(struct mg_connection *nc, const char *path, - const struct mg_serve_http_opts *opts) { - FILE *fp; - struct mg_str mime_type; - - if ((fp = fopen(path, "rb")) == NULL) { - mg_http_send_error(nc, 404, NULL); - } else { - mg_set_close_on_exec(fileno(fp)); - - mime_type = mg_get_mime_type(path, "text/plain", opts); - mg_send_response_line(nc, 200, opts->extra_headers); - mg_printf(nc, - "Content-Type: %.*s\r\n" - "Connection: close\r\n\r\n", - (int) mime_type.len, mime_type.p); - mg_send_ssi_file(nc, path, fp, 0, opts); - fclose(fp); - nc->flags |= MG_F_SEND_AND_CLOSE; - } -} -#else -static void mg_handle_ssi_request(struct mg_connection *nc, const char *path, - const struct mg_serve_http_opts *opts) { - (void) path; - (void) opts; - mg_http_send_error(nc, 500, "SSI disabled"); -} -#endif /* MG_DISABLE_SSI */ - -static void mg_http_construct_etag(char *buf, size_t buf_len, - const cs_stat_t *st) { - snprintf(buf, buf_len, "\"%lx.%" INT64_FMT "\"", (unsigned long) st->st_mtime, - (int64_t) st->st_size); -} -static void mg_gmt_time_string(char *buf, size_t buf_len, time_t *t) { - strftime(buf, buf_len, "%a, %d %b %Y %H:%M:%S GMT", gmtime(t)); -} - -static int mg_http_parse_range_header(const struct mg_str *header, int64_t *a, - int64_t *b) { - /* - * There is no snscanf. Headers are not guaranteed to be NUL-terminated, - * so we have this. Ugh. - */ - int result; - char *p = (char *) MG_MALLOC(header->len + 1); - if (p == NULL) return 0; - memcpy(p, header->p, header->len); - p[header->len] = '\0'; - result = sscanf(p, "bytes=%" INT64_FMT "-%" INT64_FMT, a, b); - MG_FREE(p); - return result; -} - -static void mg_http_send_file2(struct mg_connection *nc, const char *path, - cs_stat_t *st, struct http_message *hm, - struct mg_serve_http_opts *opts) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - struct mg_str mime_type; - - DBG(("%p [%s]", nc, path)); - mg_http_free_proto_data_file(&pd->file); - if ((pd->file.fp = fopen(path, "rb")) == NULL) { - int code; - switch (errno) { - case EACCES: - code = 403; - break; - case ENOENT: - code = 404; - break; - default: - code = 500; - }; - mg_http_send_error(nc, code, "Open failed"); - } else if (mg_match_prefix(opts->ssi_pattern, strlen(opts->ssi_pattern), - path) > 0) { - mg_handle_ssi_request(nc, path, opts); - } else { - char etag[50], current_time[50], last_modified[50], range[70]; - time_t t = time(NULL); - int64_t r1 = 0, r2 = 0, cl = st->st_size; - struct mg_str *range_hdr = mg_get_http_header(hm, "Range"); - int n, status_code = 200; - - /* Handle Range header */ - range[0] = '\0'; - if (range_hdr != NULL && - (n = mg_http_parse_range_header(range_hdr, &r1, &r2)) > 0 && r1 >= 0 && - r2 >= 0) { - /* If range is specified like "400-", set second limit to content len */ - if (n == 1) { - r2 = cl - 1; - } - if (r1 > r2 || r2 >= cl) { - status_code = 416; - cl = 0; - snprintf(range, sizeof(range), - "Content-Range: bytes */%" INT64_FMT "\r\n", - (int64_t) st->st_size); - } else { - status_code = 206; - cl = r2 - r1 + 1; - snprintf(range, sizeof(range), "Content-Range: bytes %" INT64_FMT - "-%" INT64_FMT "/%" INT64_FMT "\r\n", - r1, r1 + cl - 1, (int64_t) st->st_size); -#if _FILE_OFFSET_BITS == 64 || _POSIX_C_SOURCE >= 200112L || \ - _XOPEN_SOURCE >= 600 - fseeko(pd->file.fp, r1, SEEK_SET); -#else - fseek(pd->file.fp, r1, SEEK_SET); -#endif - } - } - -#ifndef MG_DISABLE_HTTP_KEEP_ALIVE - { - struct mg_str *conn_hdr = mg_get_http_header(hm, "Connection"); - if (conn_hdr != NULL) { - pd->file.keepalive = (mg_vcasecmp(conn_hdr, "keep-alive") == 0); - } else { - pd->file.keepalive = (mg_vcmp(&hm->proto, "HTTP/1.1") == 0); - } - } -#endif - - mg_http_construct_etag(etag, sizeof(etag), st); - mg_gmt_time_string(current_time, sizeof(current_time), &t); - mg_gmt_time_string(last_modified, sizeof(last_modified), &st->st_mtime); - mime_type = mg_get_mime_type(path, "text/plain", opts); - /* - * Content length casted to size_t because: - * 1) that's the maximum buffer size anyway - * 2) ESP8266 RTOS SDK newlib vprintf cannot contain a 64bit arg at non-last - * position - * TODO(mkm): fix ESP8266 RTOS SDK - */ - mg_send_response_line(nc, status_code, opts->extra_headers); - mg_printf(nc, - "Date: %s\r\n" - "Last-Modified: %s\r\n" - "Accept-Ranges: bytes\r\n" - "Content-Type: %.*s\r\n" - "Connection: %s\r\n" - "Content-Length: %" SIZE_T_FMT - "\r\n" - "%sEtag: %s\r\n\r\n", - current_time, last_modified, (int) mime_type.len, mime_type.p, - (pd->file.keepalive ? "keep-alive" : "close"), (size_t) cl, range, - etag); - - pd->file.cl = cl; - pd->file.type = DATA_FILE; - mg_http_transfer_file_data(nc); - } -} - -#endif - -int mg_url_decode(const char *src, int src_len, char *dst, int dst_len, - int is_form_url_encoded) { - int i, j, a, b; -#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W') - - for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++) { - if (src[i] == '%') { - if (i < src_len - 2 && isxdigit(*(const unsigned char *) (src + i + 1)) && - isxdigit(*(const unsigned char *) (src + i + 2))) { - a = tolower(*(const unsigned char *) (src + i + 1)); - b = tolower(*(const unsigned char *) (src + i + 2)); - dst[j] = (char) ((HEXTOI(a) << 4) | HEXTOI(b)); - i += 2; - } else { - return -1; - } - } else if (is_form_url_encoded && src[i] == '+') { - dst[j] = ' '; - } else { - dst[j] = src[i]; - } - } - - dst[j] = '\0'; /* Null-terminate the destination */ - - return i >= src_len ? j : -1; -} - -int mg_get_http_var(const struct mg_str *buf, const char *name, char *dst, - size_t dst_len) { - const char *p, *e, *s; - size_t name_len; - int len; - - if (dst == NULL || dst_len == 0) { - len = -2; - } else if (buf->p == NULL || name == NULL || buf->len == 0) { - len = -1; - dst[0] = '\0'; - } else { - name_len = strlen(name); - e = buf->p + buf->len; - len = -1; - dst[0] = '\0'; - - for (p = buf->p; p + name_len < e; p++) { - if ((p == buf->p || p[-1] == '&') && p[name_len] == '=' && - !mg_ncasecmp(name, p, name_len)) { - p += name_len + 1; - s = (const char *) memchr(p, '&', (size_t)(e - p)); - if (s == NULL) { - s = e; - } - len = mg_url_decode(p, (size_t)(s - p), dst, dst_len, 1); - if (len == -1) { - len = -2; - } - break; - } - } - } - - return len; -} - -void mg_send_http_chunk(struct mg_connection *nc, const char *buf, size_t len) { - char chunk_size[50]; - int n; - - n = snprintf(chunk_size, sizeof(chunk_size), "%lX\r\n", (unsigned long) len); - mg_send(nc, chunk_size, n); - mg_send(nc, buf, len); - mg_send(nc, "\r\n", 2); -} - -void mg_printf_http_chunk(struct mg_connection *nc, const char *fmt, ...) { - char mem[MG_VPRINTF_BUFFER_SIZE], *buf = mem; - int len; - va_list ap; - - va_start(ap, fmt); - len = mg_avprintf(&buf, sizeof(mem), fmt, ap); - va_end(ap); - - if (len >= 0) { - mg_send_http_chunk(nc, buf, len); - } - - /* LCOV_EXCL_START */ - if (buf != mem && buf != NULL) { - MG_FREE(buf); - } - /* LCOV_EXCL_STOP */ -} - -void mg_printf_html_escape(struct mg_connection *nc, const char *fmt, ...) { - char mem[MG_VPRINTF_BUFFER_SIZE], *buf = mem; - int i, j, len; - va_list ap; - - va_start(ap, fmt); - len = mg_avprintf(&buf, sizeof(mem), fmt, ap); - va_end(ap); - - if (len >= 0) { - for (i = j = 0; i < len; i++) { - if (buf[i] == '<' || buf[i] == '>') { - mg_send(nc, buf + j, i - j); - mg_send(nc, buf[i] == '<' ? "<" : ">", 4); - j = i + 1; - } - } - mg_send(nc, buf + j, i - j); - } - - /* LCOV_EXCL_START */ - if (buf != mem && buf != NULL) { - MG_FREE(buf); - } - /* LCOV_EXCL_STOP */ -} - -int mg_http_parse_header(struct mg_str *hdr, const char *var_name, char *buf, - size_t buf_size) { - int ch = ' ', ch1 = ',', len = 0, n = strlen(var_name); - const char *p, *end = hdr ? hdr->p + hdr->len : NULL, *s = NULL; - - if (buf != NULL && buf_size > 0) buf[0] = '\0'; - if (hdr == NULL) return 0; - - /* Find where variable starts */ - for (s = hdr->p; s != NULL && s + n < end; s++) { - if ((s == hdr->p || s[-1] == ch || s[-1] == ch1) && s[n] == '=' && - !memcmp(s, var_name, n)) - break; - } - - if (s != NULL && &s[n + 1] < end) { - s += n + 1; - if (*s == '"' || *s == '\'') { - ch = ch1 = *s++; - } - p = s; - while (p < end && p[0] != ch && p[0] != ch1 && len < (int) buf_size) { - if (ch != ' ' && p[0] == '\\' && p[1] == ch) p++; - buf[len++] = *p++; - } - if (len >= (int) buf_size || (ch != ' ' && *p != ch)) { - len = 0; - } else { - if (len > 0 && s[len - 1] == ',') len--; - if (len > 0 && s[len - 1] == ';') len--; - buf[len] = '\0'; - } - } - - return len; -} - -#ifndef MG_DISABLE_FILESYSTEM -static int mg_is_file_hidden(const char *path, - const struct mg_serve_http_opts *opts, - int exclude_specials) { - const char *p1 = opts->per_directory_auth_file; - const char *p2 = opts->hidden_file_pattern; - - /* Strip directory path from the file name */ - const char *pdir = strrchr(path, DIRSEP); - if (pdir != NULL) { - path = pdir + 1; - } - - return (exclude_specials && (!strcmp(path, ".") || !strcmp(path, ".."))) || - (p1 != NULL && - mg_match_prefix(p1, strlen(p1), path) == (int) strlen(p1)) || - (p2 != NULL && mg_match_prefix(p2, strlen(p2), path) > 0); -} - -#ifndef MG_DISABLE_HTTP_DIGEST_AUTH -static void mg_mkmd5resp(const char *method, size_t method_len, const char *uri, - size_t uri_len, const char *ha1, size_t ha1_len, - const char *nonce, size_t nonce_len, const char *nc, - size_t nc_len, const char *cnonce, size_t cnonce_len, - const char *qop, size_t qop_len, char *resp) { - static const char colon[] = ":"; - static const size_t one = 1; - char ha2[33]; - - cs_md5(ha2, method, method_len, colon, one, uri, uri_len, NULL); - cs_md5(resp, ha1, ha1_len, colon, one, nonce, nonce_len, colon, one, nc, - nc_len, colon, one, cnonce, cnonce_len, colon, one, qop, qop_len, - colon, one, ha2, sizeof(ha2) - 1, NULL); -} - -int mg_http_create_digest_auth_header(char *buf, size_t buf_len, - const char *method, const char *uri, - const char *auth_domain, const char *user, - const char *passwd) { - static const char colon[] = ":", qop[] = "auth"; - static const size_t one = 1; - char ha1[33], resp[33], cnonce[40]; - - snprintf(cnonce, sizeof(cnonce), "%x", (unsigned int) time(NULL)); - cs_md5(ha1, user, (size_t) strlen(user), colon, one, auth_domain, - (size_t) strlen(auth_domain), colon, one, passwd, - (size_t) strlen(passwd), NULL); - mg_mkmd5resp(method, strlen(method), uri, strlen(uri), ha1, sizeof(ha1) - 1, - cnonce, strlen(cnonce), "1", one, cnonce, strlen(cnonce), qop, - sizeof(qop) - 1, resp); - return snprintf(buf, buf_len, - "Authorization: Digest username=\"%s\"," - "realm=\"%s\",uri=\"%s\",qop=%s,nc=1,cnonce=%s," - "nonce=%s,response=%s\r\n", - user, auth_domain, uri, qop, cnonce, cnonce, resp); -} - -/* - * Check for authentication timeout. - * Clients send time stamp encoded in nonce. Make sure it is not too old, - * to prevent replay attacks. - * Assumption: nonce is a hexadecimal number of seconds since 1970. - */ -static int mg_check_nonce(const char *nonce) { - unsigned long now = (unsigned long) time(NULL); - unsigned long val = (unsigned long) strtoul(nonce, NULL, 16); - return now < val || now - val < 3600; -} - -int mg_http_check_digest_auth(struct http_message *hm, const char *auth_domain, - FILE *fp) { - struct mg_str *hdr; - char buf[128], f_user[sizeof(buf)], f_ha1[sizeof(buf)], f_domain[sizeof(buf)]; - char user[50], cnonce[33], response[40], uri[200], qop[20], nc[20], nonce[30]; - char expected_response[33]; - - /* Parse "Authorization:" header, fail fast on parse error */ - if (hm == NULL || fp == NULL || - (hdr = mg_get_http_header(hm, "Authorization")) == NULL || - mg_http_parse_header(hdr, "username", user, sizeof(user)) == 0 || - mg_http_parse_header(hdr, "cnonce", cnonce, sizeof(cnonce)) == 0 || - mg_http_parse_header(hdr, "response", response, sizeof(response)) == 0 || - mg_http_parse_header(hdr, "uri", uri, sizeof(uri)) == 0 || - mg_http_parse_header(hdr, "qop", qop, sizeof(qop)) == 0 || - mg_http_parse_header(hdr, "nc", nc, sizeof(nc)) == 0 || - mg_http_parse_header(hdr, "nonce", nonce, sizeof(nonce)) == 0 || - mg_check_nonce(nonce) == 0) { - return 0; - } - - /* - * Read passwords file line by line. If should have htdigest format, - * i.e. each line should be a colon-separated sequence: - * USER_NAME:DOMAIN_NAME:HA1_HASH_OF_USER_DOMAIN_AND_PASSWORD - */ - while (fgets(buf, sizeof(buf), fp) != NULL) { - if (sscanf(buf, "%[^:]:%[^:]:%s", f_user, f_domain, f_ha1) == 3 && - strcmp(user, f_user) == 0 && - /* NOTE(lsm): due to a bug in MSIE, we do not compare URIs */ - strcmp(auth_domain, f_domain) == 0) { - /* User and domain matched, check the password */ - mg_mkmd5resp( - hm->method.p, hm->method.len, hm->uri.p, - hm->uri.len + (hm->query_string.len ? hm->query_string.len + 1 : 0), - f_ha1, strlen(f_ha1), nonce, strlen(nonce), nc, strlen(nc), cnonce, - strlen(cnonce), qop, strlen(qop), expected_response); - return mg_casecmp(response, expected_response) == 0; - } - } - - /* None of the entries in the passwords file matched - return failure */ - return 0; -} - -static int mg_is_authorized(struct http_message *hm, const char *path, - int is_directory, const char *domain, - const char *passwords_file, - int is_global_pass_file) { - char buf[MG_MAX_PATH]; - const char *p; - FILE *fp; - int authorized = 1; - - if (domain != NULL && passwords_file != NULL) { - if (is_global_pass_file) { - fp = fopen(passwords_file, "r"); - } else if (is_directory) { - snprintf(buf, sizeof(buf), "%s%c%s", path, DIRSEP, passwords_file); - fp = fopen(buf, "r"); - } else { - p = strrchr(path, DIRSEP); - if (p == NULL) p = path; - snprintf(buf, sizeof(buf), "%.*s%c%s", (int) (p - path), path, DIRSEP, - passwords_file); - fp = fopen(buf, "r"); - } - - if (fp != NULL) { - authorized = mg_http_check_digest_auth(hm, domain, fp); - fclose(fp); - } - } - - DBG(("%s %s %d %d", path, passwords_file ? passwords_file : "", - is_global_pass_file, authorized)); - return authorized; -} -#else -static int mg_is_authorized(struct http_message *hm, const char *path, - int is_directory, const char *domain, - const char *passwords_file, - int is_global_pass_file) { - (void) hm; - (void) path; - (void) is_directory; - (void) domain; - (void) passwords_file; - (void) is_global_pass_file; - return 1; -} -#endif - -#ifndef MG_DISABLE_DIRECTORY_LISTING -static size_t mg_url_encode(const char *src, size_t s_len, char *dst, - size_t dst_len) { - static const char *dont_escape = "._-$,;~()/"; - static const char *hex = "0123456789abcdef"; - size_t i = 0, j = 0; - - for (i = j = 0; dst_len > 0 && i < s_len && j + 2 < dst_len - 1; i++, j++) { - if (isalnum(*(const unsigned char *) (src + i)) || - strchr(dont_escape, *(const unsigned char *) (src + i)) != NULL) { - dst[j] = src[i]; - } else if (j + 3 < dst_len) { - dst[j] = '%'; - dst[j + 1] = hex[(*(const unsigned char *) (src + i)) >> 4]; - dst[j + 2] = hex[(*(const unsigned char *) (src + i)) & 0xf]; - j += 2; - } - } - - dst[j] = '\0'; - return j; -} - -static void mg_escape(const char *src, char *dst, size_t dst_len) { - size_t n = 0; - while (*src != '\0' && n + 5 < dst_len) { - unsigned char ch = *(unsigned char *) src++; - if (ch == '<') { - n += snprintf(dst + n, dst_len - n, "%s", "<"); - } else { - dst[n++] = ch; - } - } - dst[n] = '\0'; -} - -static void mg_print_dir_entry(struct mg_connection *nc, const char *file_name, - cs_stat_t *stp) { - char size[64], mod[64], href[MAX_PATH_SIZE * 3], path[MAX_PATH_SIZE]; - int64_t fsize = stp->st_size; - int is_dir = S_ISDIR(stp->st_mode); - const char *slash = is_dir ? "/" : ""; - - if (is_dir) { - snprintf(size, sizeof(size), "%s", "[DIRECTORY]"); - } else { - /* - * We use (double) cast below because MSVC 6 compiler cannot - * convert unsigned __int64 to double. - */ - if (fsize < 1024) { - snprintf(size, sizeof(size), "%d", (int) fsize); - } else if (fsize < 0x100000) { - snprintf(size, sizeof(size), "%.1fk", (double) fsize / 1024.0); - } else if (fsize < 0x40000000) { - snprintf(size, sizeof(size), "%.1fM", (double) fsize / 1048576); - } else { - snprintf(size, sizeof(size), "%.1fG", (double) fsize / 1073741824); - } - } - strftime(mod, sizeof(mod), "%d-%b-%Y %H:%M", localtime(&stp->st_mtime)); - mg_escape(file_name, path, sizeof(path)); - mg_url_encode(file_name, strlen(file_name), href, sizeof(href)); - mg_printf_http_chunk(nc, - "%s%s" - "%s%s\n", - href, slash, path, slash, mod, is_dir ? -1 : fsize, - size); -} - -static void mg_scan_directory(struct mg_connection *nc, const char *dir, - const struct mg_serve_http_opts *opts, - void (*func)(struct mg_connection *, const char *, - cs_stat_t *)) { - char path[MAX_PATH_SIZE]; - cs_stat_t st; - struct dirent *dp; - DIR *dirp; - - DBG(("%p [%s]", nc, dir)); - if ((dirp = (opendir(dir))) != NULL) { - while ((dp = readdir(dirp)) != NULL) { - /* Do not show current dir and hidden files */ - if (mg_is_file_hidden((const char *) dp->d_name, opts, 1)) { - continue; - } - snprintf(path, sizeof(path), "%s/%s", dir, dp->d_name); - if (mg_stat(path, &st) == 0) { - func(nc, (const char *) dp->d_name, &st); - } - } - closedir(dirp); - } else { - DBG(("%p opendir(%s) -> %d", nc, dir, errno)); - } -} - -static void mg_send_directory_listing(struct mg_connection *nc, const char *dir, - struct http_message *hm, - struct mg_serve_http_opts *opts) { - static const char *sort_js_code = - ""; - - mg_send_response_line(nc, 200, opts->extra_headers); - mg_printf(nc, "%s: %s\r\n%s: %s\r\n\r\n", "Transfer-Encoding", "chunked", - "Content-Type", "text/html; charset=utf-8"); - - mg_printf_http_chunk( - nc, - "Index of %.*s%s%s" - "\n" - "

Index of %.*s

\n" - "" - "\n" - "\n" - "", - (int) hm->uri.len, hm->uri.p, sort_js_code, sort_js_code2, - (int) hm->uri.len, hm->uri.p); - mg_scan_directory(nc, dir, opts, mg_print_dir_entry); - mg_printf_http_chunk(nc, - "\n" - "
Name" - "Modified" - "Size
\n" - "
%s
\n" - "", - mg_version_header); - mg_send_http_chunk(nc, "", 0); - /* TODO(rojer): Remove when cesanta/dev/issues/197 is fixed. */ - nc->flags |= MG_F_SEND_AND_CLOSE; -} -#endif /* MG_DISABLE_DIRECTORY_LISTING */ - -#ifndef MG_DISABLE_DAV -static void mg_print_props(struct mg_connection *nc, const char *name, - cs_stat_t *stp) { - char mtime[64], buf[MAX_PATH_SIZE * 3]; - time_t t = stp->st_mtime; /* store in local variable for NDK compile */ - mg_gmt_time_string(mtime, sizeof(mtime), &t); - mg_url_encode(name, strlen(name), buf, sizeof(buf)); - mg_printf(nc, - "" - "%s" - "" - "" - "%s" - "%" INT64_FMT - "" - "%s" - "" - "HTTP/1.1 200 OK" - "" - "\n", - buf, S_ISDIR(stp->st_mode) ? "" : "", - (int64_t) stp->st_size, mtime); -} - -static void mg_handle_propfind(struct mg_connection *nc, const char *path, - cs_stat_t *stp, struct http_message *hm, - struct mg_serve_http_opts *opts) { - static const char header[] = - "HTTP/1.1 207 Multi-Status\r\n" - "Connection: close\r\n" - "Content-Type: text/xml; charset=utf-8\r\n\r\n" - "" - "\n"; - static const char footer[] = "\n"; - const struct mg_str *depth = mg_get_http_header(hm, "Depth"); - - /* Print properties for the requested resource itself */ - if (S_ISDIR(stp->st_mode) && - strcmp(opts->enable_directory_listing, "yes") != 0) { - mg_printf(nc, "%s", "HTTP/1.1 403 Directory Listing Denied\r\n\r\n"); - } else { - char uri[MAX_PATH_SIZE]; - mg_send(nc, header, sizeof(header) - 1); - snprintf(uri, sizeof(uri), "%.*s", (int) hm->uri.len, hm->uri.p); - mg_print_props(nc, uri, stp); - if (S_ISDIR(stp->st_mode) && (depth == NULL || mg_vcmp(depth, "0") != 0)) { - mg_scan_directory(nc, path, opts, mg_print_props); - } - mg_send(nc, footer, sizeof(footer) - 1); - nc->flags |= MG_F_SEND_AND_CLOSE; - } -} - -#ifdef MG_ENABLE_FAKE_DAVLOCK -/* - * Windows explorer (probably there are another WebDav clients like it) - * requires LOCK support in webdav. W/out this, it still works, but fails - * to save file: shows error message and offers "Save As". - * "Save as" works, but this message is very annoying. - * This is fake lock, which doesn't lock something, just returns LOCK token, - * UNLOCK always answers "OK". - * With this fake LOCK Windows Explorer looks happy and saves file. - * NOTE: that is not DAV LOCK imlementation, it is just a way to shut up - * Windows native DAV client. This is why FAKE LOCK is not enabed by default - */ -static void mg_handle_lock(struct mg_connection *nc, const char *path) { - static const char *reply = - "HTTP/1.1 207 Multi-Status\r\n" - "Connection: close\r\n" - "Content-Type: text/xml; charset=utf-8\r\n\r\n" - "" - "\n" - "\n" - "\n" - "\n" - "\n" - "opaquelocktoken:%s%u" - "" - "" - "\n" - "" - "\n"; - mg_printf(nc, reply, path, (unsigned int) time(NULL)); - nc->flags |= MG_F_SEND_AND_CLOSE; -} -#endif - -static void mg_handle_mkcol(struct mg_connection *nc, const char *path, - struct http_message *hm) { - int status_code = 500; - if (hm->body.len != (size_t) ~0 && hm->body.len > 0) { - status_code = 415; - } else if (!mg_mkdir(path, 0755)) { - status_code = 201; - } else if (errno == EEXIST) { - status_code = 405; - } else if (errno == EACCES) { - status_code = 403; - } else if (errno == ENOENT) { - status_code = 409; - } else { - status_code = 500; - } - mg_http_send_error(nc, status_code, NULL); -} - -static int mg_remove_directory(const struct mg_serve_http_opts *opts, - const char *dir) { - char path[MAX_PATH_SIZE]; - struct dirent *dp; - cs_stat_t st; - DIR *dirp; - - if ((dirp = opendir(dir)) == NULL) return 0; - - while ((dp = readdir(dirp)) != NULL) { - if (mg_is_file_hidden((const char *) dp->d_name, opts, 1)) { - continue; - } - snprintf(path, sizeof(path), "%s%c%s", dir, '/', dp->d_name); - mg_stat(path, &st); - if (S_ISDIR(st.st_mode)) { - mg_remove_directory(opts, path); - } else { - remove(path); - } - } - closedir(dirp); - rmdir(dir); - - return 1; -} - -static void mg_handle_move(struct mg_connection *c, - const struct mg_serve_http_opts *opts, - const char *path, struct http_message *hm) { - const struct mg_str *dest = mg_get_http_header(hm, "Destination"); - if (dest == NULL) { - mg_http_send_error(c, 411, NULL); - } else { - const char *p = (char *) memchr(dest->p, '/', dest->len); - if (p != NULL && p[1] == '/' && - (p = (char *) memchr(p + 2, '/', dest->p + dest->len - p)) != NULL) { - char buf[MAX_PATH_SIZE]; - snprintf(buf, sizeof(buf), "%s%.*s", opts->dav_document_root, - (int) (dest->p + dest->len - p), p); - if (rename(path, buf) == 0) { - mg_http_send_error(c, 200, NULL); - } else { - mg_http_send_error(c, 418, NULL); - } - } else { - mg_http_send_error(c, 500, NULL); - } - } -} - -static void mg_handle_delete(struct mg_connection *nc, - const struct mg_serve_http_opts *opts, - const char *path) { - cs_stat_t st; - if (mg_stat(path, &st) != 0) { - mg_http_send_error(nc, 404, NULL); - } else if (S_ISDIR(st.st_mode)) { - mg_remove_directory(opts, path); - mg_http_send_error(nc, 204, NULL); - } else if (remove(path) == 0) { - mg_http_send_error(nc, 204, NULL); - } else { - mg_http_send_error(nc, 423, NULL); - } -} - -/* Return -1 on error, 1 on success. */ -static int mg_create_itermediate_directories(const char *path) { - const char *s; - - /* Create intermediate directories if they do not exist */ - for (s = path + 1; *s != '\0'; s++) { - if (*s == '/') { - char buf[MAX_PATH_SIZE]; - cs_stat_t st; - snprintf(buf, sizeof(buf), "%.*s", (int) (s - path), path); - buf[sizeof(buf) - 1] = '\0'; - if (mg_stat(buf, &st) != 0 && mg_mkdir(buf, 0755) != 0) { - return -1; - } - } - } - - return 1; -} - -static void mg_handle_put(struct mg_connection *nc, const char *path, - struct http_message *hm) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - cs_stat_t st; - const struct mg_str *cl_hdr = mg_get_http_header(hm, "Content-Length"); - int rc, status_code = mg_stat(path, &st) == 0 ? 200 : 201; - - mg_http_free_proto_data_file(&pd->file); - if ((rc = mg_create_itermediate_directories(path)) == 0) { - mg_printf(nc, "HTTP/1.1 %d OK\r\nContent-Length: 0\r\n\r\n", status_code); - } else if (rc == -1) { - mg_http_send_error(nc, 500, NULL); - } else if (cl_hdr == NULL) { - mg_http_send_error(nc, 411, NULL); - } else if ((pd->file.fp = fopen(path, "w+b")) == NULL) { - mg_http_send_error(nc, 500, NULL); - } else { - const struct mg_str *range_hdr = mg_get_http_header(hm, "Content-Range"); - int64_t r1 = 0, r2 = 0; - pd->file.type = DATA_PUT; - mg_set_close_on_exec(fileno(pd->file.fp)); - pd->file.cl = to64(cl_hdr->p); - if (range_hdr != NULL && - mg_http_parse_range_header(range_hdr, &r1, &r2) > 0) { - status_code = 206; - fseeko(pd->file.fp, r1, SEEK_SET); - pd->file.cl = r2 > r1 ? r2 - r1 + 1 : pd->file.cl - r1; - } - mg_printf(nc, "HTTP/1.1 %d OK\r\nContent-Length: 0\r\n\r\n", status_code); - /* Remove HTTP request from the mbuf, leave only payload */ - mbuf_remove(&nc->recv_mbuf, hm->message.len - hm->body.len); - mg_http_transfer_file_data(nc); - } -} -#endif /* MG_DISABLE_DAV */ - -static int mg_is_dav_request(const struct mg_str *s) { - static const char *methods[] = {"PUT", "DELETE", "MKCOL", "PROPFIND", "MOVE" -#ifdef MG_ENABLE_FAKE_DAVLOCK - , - "LOCK", "UNLOCK" -#endif - }; - size_t i; - - for (i = 0; i < ARRAY_SIZE(methods); i++) { - if (mg_vcmp(s, methods[i]) == 0) { - return 1; - } - } - - return 0; -} - -/* - * Given a directory path, find one of the files specified in the - * comma-separated list of index files `list`. - * First found index file wins. If an index file is found, then gets - * appended to the `path`, stat-ed, and result of `stat()` passed to `stp`. - * If index file is not found, then `path` and `stp` remain unchanged. - */ -MG_INTERNAL void mg_find_index_file(const char *path, const char *list, - char **index_file, cs_stat_t *stp) { - struct mg_str vec; - size_t path_len = strlen(path); - int found = 0; - *index_file = NULL; - - /* Traverse index files list. For each entry, append it to the given */ - /* path and see if the file exists. If it exists, break the loop */ - while ((list = mg_next_comma_list_entry(list, &vec, NULL)) != NULL) { - cs_stat_t st; - size_t len = path_len + 1 + vec.len + 1; - *index_file = (char *) MG_REALLOC(*index_file, len); - if (*index_file == NULL) break; - snprintf(*index_file, len, "%s%c%.*s", path, DIRSEP, (int) vec.len, vec.p); - - /* Does it exist? Is it a file? */ - if (mg_stat(*index_file, &st) == 0 && S_ISREG(st.st_mode)) { - /* Yes it does, break the loop */ - *stp = st; - found = 1; - break; - } - } - if (!found) { - MG_FREE(*index_file); - *index_file = NULL; - } - DBG(("[%s] [%s]", path, (*index_file ? *index_file : ""))); -} - -static int mg_http_send_port_based_redirect( - struct mg_connection *c, struct http_message *hm, - const struct mg_serve_http_opts *opts) { - const char *rewrites = opts->url_rewrites; - struct mg_str a, b; - char local_port[20] = {'%'}; - - mg_conn_addr_to_str(c, local_port + 1, sizeof(local_port) - 1, - MG_SOCK_STRINGIFY_PORT); - - while ((rewrites = mg_next_comma_list_entry(rewrites, &a, &b)) != NULL) { - if (mg_vcmp(&a, local_port) == 0) { - mg_send_response_line(c, 301, NULL); - mg_printf(c, "Content-Length: 0\r\nLocation: %.*s%.*s\r\n\r\n", - (int) b.len, b.p, (int) (hm->proto.p - hm->uri.p - 1), - hm->uri.p); - return 1; - } - } - - return 0; -} - -MG_INTERNAL int mg_uri_to_local_path(struct http_message *hm, - const struct mg_serve_http_opts *opts, - char **local_path, - struct mg_str *remainder) { - int ok = 1; - const char *cp = hm->uri.p, *cp_end = hm->uri.p + hm->uri.len; - struct mg_str root = {NULL, 0}; - const char *file_uri_start = cp; - *local_path = NULL; - remainder->p = NULL; - remainder->len = 0; - - { /* 1. Determine which root to use. */ - const char *rewrites = opts->url_rewrites; - struct mg_str *hh = mg_get_http_header(hm, "Host"); - struct mg_str a, b; - /* Check rewrites first. */ - while ((rewrites = mg_next_comma_list_entry(rewrites, &a, &b)) != NULL) { - if (a.len > 1 && a.p[0] == '@') { - /* Host rewrite. */ - if (hh != NULL && hh->len == a.len - 1 && - mg_ncasecmp(a.p + 1, hh->p, a.len - 1) == 0) { - root = b; - break; - } - } else { - /* Regular rewrite, URI=directory */ - int match_len = mg_match_prefix_n(a, hm->uri); - if (match_len > 0) { - file_uri_start = hm->uri.p + match_len; - if (*file_uri_start == '/' || file_uri_start == cp_end) { - /* Match ended at component boundary, ok. */ - } else if (*(file_uri_start - 1) == '/') { - /* Pattern ends with '/', backtrack. */ - file_uri_start--; - } else { - /* No match: must fall on the component boundary. */ - continue; - } - root = b; - break; - } - } - } - /* If no rewrite rules matched, use DAV or regular document root. */ - if (root.p == NULL) { -#ifndef MG_DISABLE_DAV - if (opts->dav_document_root != NULL && mg_is_dav_request(&hm->method)) { - root.p = opts->dav_document_root; - root.len = strlen(opts->dav_document_root); - } else -#endif - { - root.p = opts->document_root; - root.len = strlen(opts->document_root); - } - } - assert(root.p != NULL && root.len > 0); - } - - { /* 2. Find where in the canonical URI path the local path ends. */ - const char *u = file_uri_start + 1; - char *lp = (char *) MG_MALLOC(root.len + hm->uri.len + 1); - char *lp_end = lp + root.len + hm->uri.len + 1; - char *p = lp, *ps; - int exists = 1; - if (lp == NULL) { - ok = 0; - goto out; - } - memcpy(p, root.p, root.len); - p += root.len; - if (*(p - 1) == DIRSEP) p--; - *p = '\0'; - ps = p; - - /* Chop off URI path components one by one and build local path. */ - while (u <= cp_end) { - const char *next = u; - struct mg_str component; - if (exists) { - cs_stat_t st; - exists = (mg_stat(lp, &st) == 0); - if (exists && S_ISREG(st.st_mode)) { - /* We found the terminal, the rest of the URI (if any) is path_info. - */ - if (*(u - 1) == '/') u--; - break; - } - } - if (u >= cp_end) break; - parse_uri_component((const char **) &next, cp_end, '/', &component); - if (component.len > 0) { - int len; - memmove(p + 1, component.p, component.len); - len = mg_url_decode(p + 1, component.len, p + 1, lp_end - p - 1, 0); - if (len <= 0) { - ok = 0; - break; - } - component.p = p + 1; - component.len = len; - if (mg_vcmp(&component, ".") == 0) { - /* Yum. */ - } else if (mg_vcmp(&component, "..") == 0) { - while (p > ps && *p != DIRSEP) p--; - *p = '\0'; - } else { - size_t i; -#ifdef _WIN32 - /* On Windows, make sure it's valid Unicode (no funny stuff). */ - wchar_t buf[MG_MAX_PATH * 2]; - if (to_wchar(component.p, buf, MG_MAX_PATH) == 0) { - DBG(("[%.*s] smells funny", (int) component.len, component.p)); - ok = 0; - break; - } -#endif - *p++ = DIRSEP; - /* No NULs and DIRSEPs in the component (percent-encoded). */ - for (i = 0; i < component.len; i++, p++) { - if (*p == '\0' || *p == DIRSEP -#ifdef _WIN32 - /* On Windows, "/" is also accepted, so check for that too. */ - || - *p == '/' -#endif - ) { - ok = 0; - break; - } - } - } - } - u = next; - } - if (ok) { - *local_path = lp; - remainder->p = u; - remainder->len = cp_end - u; - } else { - MG_FREE(lp); - } - } - -out: - DBG(("'%.*s' -> '%s' + '%.*s'", (int) hm->uri.len, hm->uri.p, - *local_path ? *local_path : "", (int) remainder->len, remainder->p)); - return ok; -} - -#ifndef MG_DISABLE_CGI -#ifdef _WIN32 -struct mg_threadparam { - sock_t s; - HANDLE hPipe; -}; - -static int mg_wait_until_ready(sock_t sock, int for_read) { - fd_set set; - FD_ZERO(&set); - FD_SET(sock, &set); - return select(sock + 1, for_read ? &set : 0, for_read ? 0 : &set, 0, 0) == 1; -} - -static void *mg_push_to_stdin(void *arg) { - struct mg_threadparam *tp = (struct mg_threadparam *) arg; - int n, sent, stop = 0; - DWORD k; - char buf[BUFSIZ]; - - while (!stop && mg_wait_until_ready(tp->s, 1) && - (n = recv(tp->s, buf, sizeof(buf), 0)) > 0) { - if (n == -1 && GetLastError() == WSAEWOULDBLOCK) continue; - for (sent = 0; !stop && sent < n; sent += k) { - if (!WriteFile(tp->hPipe, buf + sent, n - sent, &k, 0)) stop = 1; - } - } - DBG(("%s", "FORWARED EVERYTHING TO CGI")); - CloseHandle(tp->hPipe); - MG_FREE(tp); - _endthread(); - return NULL; -} - -static void *mg_pull_from_stdout(void *arg) { - struct mg_threadparam *tp = (struct mg_threadparam *) arg; - int k = 0, stop = 0; - DWORD n, sent; - char buf[BUFSIZ]; - - while (!stop && ReadFile(tp->hPipe, buf, sizeof(buf), &n, NULL)) { - for (sent = 0; !stop && sent < n; sent += k) { - if (mg_wait_until_ready(tp->s, 0) && - (k = send(tp->s, buf + sent, n - sent, 0)) <= 0) - stop = 1; - } - } - DBG(("%s", "EOF FROM CGI")); - CloseHandle(tp->hPipe); - shutdown(tp->s, 2); // Without this, IO thread may get truncated data - closesocket(tp->s); - MG_FREE(tp); - _endthread(); - return NULL; -} - -static void mg_spawn_stdio_thread(sock_t sock, HANDLE hPipe, - void *(*func)(void *)) { - struct mg_threadparam *tp = (struct mg_threadparam *) MG_MALLOC(sizeof(*tp)); - if (tp != NULL) { - tp->s = sock; - tp->hPipe = hPipe; - mg_start_thread(func, tp); - } -} - -static void mg_abs_path(const char *utf8_path, char *abs_path, size_t len) { - wchar_t buf[MAX_PATH_SIZE], buf2[MAX_PATH_SIZE]; - to_wchar(utf8_path, buf, ARRAY_SIZE(buf)); - GetFullPathNameW(buf, ARRAY_SIZE(buf2), buf2, NULL); - WideCharToMultiByte(CP_UTF8, 0, buf2, wcslen(buf2) + 1, abs_path, len, 0, 0); -} - -static pid_t mg_start_process(const char *interp, const char *cmd, - const char *env, const char *envp[], - const char *dir, sock_t sock) { - STARTUPINFOW si; - PROCESS_INFORMATION pi; - HANDLE a[2], b[2], me = GetCurrentProcess(); - wchar_t wcmd[MAX_PATH_SIZE], full_dir[MAX_PATH_SIZE]; - char buf[MAX_PATH_SIZE], buf2[MAX_PATH_SIZE], buf5[MAX_PATH_SIZE], - buf4[MAX_PATH_SIZE], cmdline[MAX_PATH_SIZE]; - DWORD flags = DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS; - FILE *fp; - - memset(&si, 0, sizeof(si)); - memset(&pi, 0, sizeof(pi)); - - si.cb = sizeof(si); - si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; - si.wShowWindow = SW_HIDE; - si.hStdError = GetStdHandle(STD_ERROR_HANDLE); - - CreatePipe(&a[0], &a[1], NULL, 0); - CreatePipe(&b[0], &b[1], NULL, 0); - DuplicateHandle(me, a[0], me, &si.hStdInput, 0, TRUE, flags); - DuplicateHandle(me, b[1], me, &si.hStdOutput, 0, TRUE, flags); - - if (interp == NULL && (fp = fopen(cmd, "r")) != NULL) { - buf[0] = buf[1] = '\0'; - fgets(buf, sizeof(buf), fp); - buf[sizeof(buf) - 1] = '\0'; - if (buf[0] == '#' && buf[1] == '!') { - interp = buf + 2; - /* Trim leading spaces: https://github.com/cesanta/mongoose/issues/489 */ - while (*interp != '\0' && isspace(*(unsigned char *) interp)) { - interp++; - } - } - fclose(fp); - } - - snprintf(buf, sizeof(buf), "%s/%s", dir, cmd); - mg_abs_path(buf, buf2, ARRAY_SIZE(buf2)); - - mg_abs_path(dir, buf5, ARRAY_SIZE(buf5)); - to_wchar(dir, full_dir, ARRAY_SIZE(full_dir)); - - if (interp != NULL) { - mg_abs_path(interp, buf4, ARRAY_SIZE(buf4)); - snprintf(cmdline, sizeof(cmdline), "%s \"%s\"", buf4, buf2); - } else { - snprintf(cmdline, sizeof(cmdline), "\"%s\"", buf2); - } - to_wchar(cmdline, wcmd, ARRAY_SIZE(wcmd)); - - if (CreateProcessW(NULL, wcmd, NULL, NULL, TRUE, CREATE_NEW_PROCESS_GROUP, - (void *) env, full_dir, &si, &pi) != 0) { - mg_spawn_stdio_thread(sock, a[1], mg_push_to_stdin); - mg_spawn_stdio_thread(sock, b[0], mg_pull_from_stdout); - } else { - CloseHandle(a[1]); - CloseHandle(b[0]); - closesocket(sock); - } - DBG(("CGI command: [%ls] -> %p", wcmd, pi.hProcess)); - - /* Not closing a[0] and b[1] because we've used DUPLICATE_CLOSE_SOURCE */ - CloseHandle(si.hStdOutput); - CloseHandle(si.hStdInput); - /* TODO(lsm): check if we need close process and thread handles too */ - /* CloseHandle(pi.hThread); */ - /* CloseHandle(pi.hProcess); */ - - return pi.hProcess; -} -#else -static pid_t mg_start_process(const char *interp, const char *cmd, - const char *env, const char *envp[], - const char *dir, sock_t sock) { - char buf[500]; - pid_t pid = fork(); - (void) env; - - if (pid == 0) { - /* - * In Linux `chdir` declared with `warn_unused_result` attribute - * To shutup compiler we have yo use result in some way - */ - int tmp = chdir(dir); - (void) tmp; - (void) dup2(sock, 0); - (void) dup2(sock, 1); - closesocket(sock); - - /* - * After exec, all signal handlers are restored to their default values, - * with one exception of SIGCHLD. According to POSIX.1-2001 and Linux's - * implementation, SIGCHLD's handler will leave unchanged after exec - * if it was set to be ignored. Restore it to default action. - */ - signal(SIGCHLD, SIG_DFL); - - if (interp == NULL) { - execle(cmd, cmd, (char *) 0, envp); /* (char *) 0 to squash warning */ - } else { - execle(interp, interp, cmd, (char *) 0, envp); - } - snprintf(buf, sizeof(buf), - "Status: 500\r\n\r\n" - "500 Server Error: %s%s%s: %s", - interp == NULL ? "" : interp, interp == NULL ? "" : " ", cmd, - strerror(errno)); - send(1, buf, strlen(buf), 0); - exit(EXIT_FAILURE); /* exec call failed */ - } - - return pid; -} -#endif /* _WIN32 */ - -/* - * Append VARIABLE=VALUE\0 string to the buffer, and add a respective - * pointer into the vars array. - */ -static char *mg_addenv(struct mg_cgi_env_block *block, const char *fmt, ...) { - int n, space; - char *added = block->buf + block->len; - va_list ap; - - /* Calculate how much space is left in the buffer */ - space = sizeof(block->buf) - (block->len + 2); - if (space > 0) { - /* Copy VARIABLE=VALUE\0 string into the free space */ - va_start(ap, fmt); - n = vsnprintf(added, (size_t) space, fmt, ap); - va_end(ap); - - /* Make sure we do not overflow buffer and the envp array */ - if (n > 0 && n + 1 < space && - block->nvars < (int) ARRAY_SIZE(block->vars) - 2) { - /* Append a pointer to the added string into the envp array */ - block->vars[block->nvars++] = added; - /* Bump up used length counter. Include \0 terminator */ - block->len += n + 1; - } - } - - return added; -} - -static void mg_addenv2(struct mg_cgi_env_block *blk, const char *name) { - const char *s; - if ((s = getenv(name)) != NULL) mg_addenv(blk, "%s=%s", name, s); -} - -static void mg_prepare_cgi_environment(struct mg_connection *nc, - const char *prog, - const struct mg_str *path_info, - const struct http_message *hm, - const struct mg_serve_http_opts *opts, - struct mg_cgi_env_block *blk) { - const char *s; - struct mg_str *h; - char *p; - size_t i; - char buf[100]; - - blk->len = blk->nvars = 0; - blk->nc = nc; - - if ((s = getenv("SERVER_NAME")) != NULL) { - mg_addenv(blk, "SERVER_NAME=%s", s); - } else { - mg_sock_to_str(nc->sock, buf, sizeof(buf), 3); - mg_addenv(blk, "SERVER_NAME=%s", buf); - } - mg_addenv(blk, "SERVER_ROOT=%s", opts->document_root); - mg_addenv(blk, "DOCUMENT_ROOT=%s", opts->document_root); - mg_addenv(blk, "SERVER_SOFTWARE=%s/%s", "Mongoose", MG_VERSION); - - /* Prepare the environment block */ - mg_addenv(blk, "%s", "GATEWAY_INTERFACE=CGI/1.1"); - mg_addenv(blk, "%s", "SERVER_PROTOCOL=HTTP/1.1"); - mg_addenv(blk, "%s", "REDIRECT_STATUS=200"); /* For PHP */ - - mg_addenv(blk, "REQUEST_METHOD=%.*s", (int) hm->method.len, hm->method.p); - - mg_addenv(blk, "REQUEST_URI=%.*s%s%.*s", (int) hm->uri.len, hm->uri.p, - hm->query_string.len == 0 ? "" : "?", (int) hm->query_string.len, - hm->query_string.p); - - mg_conn_addr_to_str(nc, buf, sizeof(buf), - MG_SOCK_STRINGIFY_REMOTE | MG_SOCK_STRINGIFY_IP); - mg_addenv(blk, "REMOTE_ADDR=%s", buf); - mg_conn_addr_to_str(nc, buf, sizeof(buf), MG_SOCK_STRINGIFY_PORT); - mg_addenv(blk, "SERVER_PORT=%s", buf); - - s = hm->uri.p + hm->uri.len - path_info->len - 1; - if (*s == '/') { - const char *base_name = strrchr(prog, DIRSEP); - mg_addenv(blk, "SCRIPT_NAME=%.*s/%s", (int) (s - hm->uri.p), hm->uri.p, - (base_name != NULL ? base_name + 1 : prog)); - } else { - mg_addenv(blk, "SCRIPT_NAME=%.*s", (int) (s - hm->uri.p + 1), hm->uri.p); - } - mg_addenv(blk, "SCRIPT_FILENAME=%s", prog); - - if (path_info != NULL && path_info->len > 0) { - mg_addenv(blk, "PATH_INFO=%.*s", (int) path_info->len, path_info->p); - /* Not really translated... */ - mg_addenv(blk, "PATH_TRANSLATED=%.*s", (int) path_info->len, path_info->p); - } - - mg_addenv(blk, "HTTPS=%s", nc->ssl != NULL ? "on" : "off"); - - if ((h = mg_get_http_header((struct http_message *) hm, "Content-Type")) != - NULL) { - mg_addenv(blk, "CONTENT_TYPE=%.*s", (int) h->len, h->p); - } - - if (hm->query_string.len > 0) { - mg_addenv(blk, "QUERY_STRING=%.*s", (int) hm->query_string.len, - hm->query_string.p); - } - - if ((h = mg_get_http_header((struct http_message *) hm, "Content-Length")) != - NULL) { - mg_addenv(blk, "CONTENT_LENGTH=%.*s", (int) h->len, h->p); - } - - mg_addenv2(blk, "PATH"); - mg_addenv2(blk, "TMP"); - mg_addenv2(blk, "TEMP"); - mg_addenv2(blk, "TMPDIR"); - mg_addenv2(blk, "PERLLIB"); - mg_addenv2(blk, MG_ENV_EXPORT_TO_CGI); - -#if defined(_WIN32) - mg_addenv2(blk, "COMSPEC"); - mg_addenv2(blk, "SYSTEMROOT"); - mg_addenv2(blk, "SystemDrive"); - mg_addenv2(blk, "ProgramFiles"); - mg_addenv2(blk, "ProgramFiles(x86)"); - mg_addenv2(blk, "CommonProgramFiles(x86)"); -#else - mg_addenv2(blk, "LD_LIBRARY_PATH"); -#endif /* _WIN32 */ - - /* Add all headers as HTTP_* variables */ - for (i = 0; hm->header_names[i].len > 0; i++) { - p = mg_addenv(blk, "HTTP_%.*s=%.*s", (int) hm->header_names[i].len, - hm->header_names[i].p, (int) hm->header_values[i].len, - hm->header_values[i].p); - - /* Convert variable name into uppercase, and change - to _ */ - for (; *p != '=' && *p != '\0'; p++) { - if (*p == '-') *p = '_'; - *p = (char) toupper(*(unsigned char *) p); - } - } - - blk->vars[blk->nvars++] = NULL; - blk->buf[blk->len++] = '\0'; -} - -static void mg_cgi_ev_handler(struct mg_connection *cgi_nc, int ev, - void *ev_data) { - struct mg_connection *nc = (struct mg_connection *) cgi_nc->user_data; - (void) ev_data; - - if (nc == NULL) return; - - switch (ev) { - case MG_EV_RECV: - /* - * CGI script does not output reply line, like "HTTP/1.1 CODE XXXXX\n" - * It outputs headers, then body. Headers might include "Status" - * header, which changes CODE, and it might include "Location" header - * which changes CODE to 302. - * - * Therefore we do not send the output from the CGI script to the user - * until all CGI headers are received. - * - * Here we parse the output from the CGI script, and if all headers has - * been received, send appropriate reply line, and forward all - * received headers to the client. - */ - if (nc->flags & MG_F_USER_1) { - struct mbuf *io = &cgi_nc->recv_mbuf; - int len = mg_http_get_request_len(io->buf, io->len); - - if (len == 0) break; - if (len < 0 || io->len > MG_MAX_HTTP_REQUEST_SIZE) { - cgi_nc->flags |= MG_F_CLOSE_IMMEDIATELY; - mg_http_send_error(nc, 500, "Bad headers"); - } else { - struct http_message hm; - struct mg_str *h; - mg_http_parse_headers(io->buf, io->buf + io->len, io->len, &hm); - if (mg_get_http_header(&hm, "Location") != NULL) { - mg_printf(nc, "%s", "HTTP/1.1 302 Moved\r\n"); - } else if ((h = mg_get_http_header(&hm, "Status")) != NULL) { - mg_printf(nc, "HTTP/1.1 %.*s\r\n", (int) h->len, h->p); - } else { - mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\n"); - } - } - nc->flags &= ~MG_F_USER_1; - } - if (!(nc->flags & MG_F_USER_1)) { - mg_forward(cgi_nc, nc); - } - break; - case MG_EV_CLOSE: - mg_http_free_proto_data_cgi(&mg_http_get_proto_data(cgi_nc)->cgi); - nc->flags |= MG_F_SEND_AND_CLOSE; - break; - } -} - -static void mg_handle_cgi(struct mg_connection *nc, const char *prog, - const struct mg_str *path_info, - const struct http_message *hm, - const struct mg_serve_http_opts *opts) { - struct mg_cgi_env_block blk; - char dir[MAX_PATH_SIZE]; - const char *p; - sock_t fds[2]; - - DBG(("%p [%s]", nc, prog)); - mg_prepare_cgi_environment(nc, prog, path_info, hm, opts, &blk); - /* - * CGI must be executed in its own directory. 'dir' must point to the - * directory containing executable program, 'p' must point to the - * executable program name relative to 'dir'. - */ - if ((p = strrchr(prog, DIRSEP)) == NULL) { - snprintf(dir, sizeof(dir), "%s", "."); - } else { - snprintf(dir, sizeof(dir), "%.*s", (int) (p - prog), prog); - prog = p + 1; - } - - /* - * Try to create socketpair in a loop until success. mg_socketpair() - * can be interrupted by a signal and fail. - * TODO(lsm): use sigaction to restart interrupted syscall - */ - do { - mg_socketpair(fds, SOCK_STREAM); - } while (fds[0] == INVALID_SOCKET); - - if (mg_start_process(opts->cgi_interpreter, prog, blk.buf, blk.vars, dir, - fds[1]) != 0) { - size_t n = nc->recv_mbuf.len - (hm->message.len - hm->body.len); - struct mg_connection *cgi_nc = - mg_add_sock(nc->mgr, fds[0], mg_cgi_ev_handler); - struct mg_http_proto_data *cgi_pd = mg_http_get_proto_data(cgi_nc); - cgi_pd->cgi.cgi_nc = cgi_nc; - cgi_pd->cgi.cgi_nc->user_data = nc; - nc->flags |= MG_F_USER_1; - /* Push POST data to the CGI */ - if (n > 0 && n < nc->recv_mbuf.len) { - mg_send(cgi_pd->cgi.cgi_nc, hm->body.p, n); - } - mbuf_remove(&nc->recv_mbuf, nc->recv_mbuf.len); - } else { - closesocket(fds[0]); - mg_http_send_error(nc, 500, "CGI failure"); - } - -#ifndef _WIN32 - closesocket(fds[1]); /* On Windows, CGI stdio thread closes that socket */ -#endif -} -#endif - -static int mg_get_month_index(const char *s) { - static const char *month_names[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - size_t i; - - for (i = 0; i < ARRAY_SIZE(month_names); i++) - if (!strcmp(s, month_names[i])) return (int) i; - - return -1; -} - -static int mg_num_leap_years(int year) { - return year / 4 - year / 100 + year / 400; -} - -/* Parse UTC date-time string, and return the corresponding time_t value. */ -MG_INTERNAL time_t mg_parse_date_string(const char *datetime) { - static const unsigned short days_before_month[] = { - 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334}; - char month_str[32]; - int second, minute, hour, day, month, year, leap_days, days; - time_t result = (time_t) 0; - - if (((sscanf(datetime, "%d/%3s/%d %d:%d:%d", &day, month_str, &year, &hour, - &minute, &second) == 6) || - (sscanf(datetime, "%d %3s %d %d:%d:%d", &day, month_str, &year, &hour, - &minute, &second) == 6) || - (sscanf(datetime, "%*3s, %d %3s %d %d:%d:%d", &day, month_str, &year, - &hour, &minute, &second) == 6) || - (sscanf(datetime, "%d-%3s-%d %d:%d:%d", &day, month_str, &year, &hour, - &minute, &second) == 6)) && - year > 1970 && (month = mg_get_month_index(month_str)) != -1) { - leap_days = mg_num_leap_years(year) - mg_num_leap_years(1970); - year -= 1970; - days = year * 365 + days_before_month[month] + (day - 1) + leap_days; - result = days * 24 * 3600 + hour * 3600 + minute * 60 + second; - } - - return result; -} - -MG_INTERNAL int mg_is_not_modified(struct http_message *hm, cs_stat_t *st) { - struct mg_str *hdr; - if ((hdr = mg_get_http_header(hm, "If-None-Match")) != NULL) { - char etag[64]; - mg_http_construct_etag(etag, sizeof(etag), st); - return mg_vcasecmp(hdr, etag) == 0; - } else if ((hdr = mg_get_http_header(hm, "If-Modified-Since")) != NULL) { - return st->st_mtime <= mg_parse_date_string(hdr->p); - } else { - return 0; - } -} - -static void mg_http_send_digest_auth_request(struct mg_connection *c, - const char *domain) { - mg_printf(c, - "HTTP/1.1 401 Unauthorized\r\n" - "WWW-Authenticate: Digest qop=\"auth\", " - "realm=\"%s\", nonce=\"%lu\"\r\n" - "Content-Length: 0\r\n\r\n", - domain, (unsigned long) time(NULL)); -} - -static void mg_http_send_options(struct mg_connection *nc) { - mg_printf(nc, "%s", - "HTTP/1.1 200 OK\r\nAllow: GET, POST, HEAD, CONNECT, OPTIONS" -#ifndef MG_DISABLE_DAV - ", MKCOL, PUT, DELETE, PROPFIND, MOVE\r\nDAV: 1,2" -#endif - "\r\n\r\n"); - nc->flags |= MG_F_SEND_AND_CLOSE; -} - -static int mg_is_creation_request(const struct http_message *hm) { - return mg_vcmp(&hm->method, "MKCOL") == 0 || mg_vcmp(&hm->method, "PUT") == 0; -} - -MG_INTERNAL void mg_send_http_file(struct mg_connection *nc, char *path, - const struct mg_str *path_info, - struct http_message *hm, - struct mg_serve_http_opts *opts) { - int exists, is_directory, is_dav = mg_is_dav_request(&hm->method); - int is_cgi; - char *index_file = NULL; - cs_stat_t st; - - exists = (mg_stat(path, &st) == 0); - is_directory = exists && S_ISDIR(st.st_mode); - - if (is_directory) - mg_find_index_file(path, opts->index_files, &index_file, &st); - - is_cgi = - (mg_match_prefix(opts->cgi_file_pattern, strlen(opts->cgi_file_pattern), - index_file ? index_file : path) > 0); - - DBG(("%p %.*s [%s] exists=%d is_dir=%d is_dav=%d is_cgi=%d index=%s", nc, - (int) hm->method.len, hm->method.p, path, exists, is_directory, is_dav, - is_cgi, index_file ? index_file : "")); - - if (is_directory && hm->uri.p[hm->uri.len - 1] != '/' && !is_dav) { - mg_printf(nc, - "HTTP/1.1 301 Moved\r\nLocation: %.*s/\r\n" - "Content-Length: 0\r\n\r\n", - (int) hm->uri.len, hm->uri.p); - MG_FREE(index_file); - return; - } - - /* If we have path_info, the only way to handle it is CGI. */ - if (path_info->len > 0 && !is_cgi) { - mg_http_send_error(nc, 501, NULL); - MG_FREE(index_file); - return; - } - - if (is_dav && opts->dav_document_root == NULL) { - mg_http_send_error(nc, 501, NULL); - } else if (!mg_is_authorized(hm, path, is_directory, opts->auth_domain, - opts->global_auth_file, 1) || - !mg_is_authorized(hm, path, is_directory, opts->auth_domain, - opts->per_directory_auth_file, 0)) { - mg_http_send_digest_auth_request(nc, opts->auth_domain); - } else if (is_cgi) { -#if !defined(MG_DISABLE_CGI) - mg_handle_cgi(nc, index_file ? index_file : path, path_info, hm, opts); -#else - mg_http_send_error(nc, 501, NULL); -#endif /* MG_DISABLE_CGI */ - } else if ((!exists || - mg_is_file_hidden(path, opts, 0 /* specials are ok */)) && - !mg_is_creation_request(hm)) { - mg_http_send_error(nc, 404, NULL); -#ifndef MG_DISABLE_DAV - } else if (!mg_vcmp(&hm->method, "PROPFIND")) { - mg_handle_propfind(nc, path, &st, hm, opts); -#ifndef MG_DISABLE_DAV_AUTH - } else if (is_dav && - (opts->dav_auth_file == NULL || - (strcmp(opts->dav_auth_file, "-") != 0 && - !mg_is_authorized(hm, path, is_directory, opts->auth_domain, - opts->dav_auth_file, 1)))) { - mg_http_send_digest_auth_request(nc, opts->auth_domain); -#endif - } else if (!mg_vcmp(&hm->method, "MKCOL")) { - mg_handle_mkcol(nc, path, hm); - } else if (!mg_vcmp(&hm->method, "DELETE")) { - mg_handle_delete(nc, opts, path); - } else if (!mg_vcmp(&hm->method, "PUT")) { - mg_handle_put(nc, path, hm); - } else if (!mg_vcmp(&hm->method, "MOVE")) { - mg_handle_move(nc, opts, path, hm); -#ifdef MG_ENABLE_FAKE_DAVLOCK - } else if (!mg_vcmp(&hm->method, "LOCK")) { - mg_handle_lock(nc, path); -#endif -#endif - } else if (!mg_vcmp(&hm->method, "OPTIONS")) { - mg_http_send_options(nc); - } else if (is_directory && index_file == NULL) { -#ifndef MG_DISABLE_DIRECTORY_LISTING - if (strcmp(opts->enable_directory_listing, "yes") == 0) { - mg_send_directory_listing(nc, path, hm, opts); - } else { - mg_http_send_error(nc, 403, NULL); - } -#else - mg_http_send_error(nc, 501, NULL); -#endif - } else if (mg_is_not_modified(hm, &st)) { - mg_http_send_error(nc, 304, "Not Modified"); - } else { - mg_http_send_file2(nc, index_file ? index_file : path, &st, hm, opts); - } - MG_FREE(index_file); -} - -void mg_serve_http(struct mg_connection *nc, struct http_message *hm, - struct mg_serve_http_opts opts) { - char *path = NULL; - struct mg_str *hdr, path_info; - uint32_t remote_ip = ntohl(*(uint32_t *) &nc->sa.sin.sin_addr); - - if (mg_check_ip_acl(opts.ip_acl, remote_ip) != 1) { - /* Not allowed to connect */ - mg_http_send_error(nc, 403, NULL); - nc->flags |= MG_F_SEND_AND_CLOSE; - return; - } - - if (mg_http_send_port_based_redirect(nc, hm, &opts)) { - return; - } - - if (opts.document_root == NULL) { - opts.document_root = "."; - } - if (opts.per_directory_auth_file == NULL) { - opts.per_directory_auth_file = ".htpasswd"; - } - if (opts.enable_directory_listing == NULL) { - opts.enable_directory_listing = "yes"; - } - if (opts.cgi_file_pattern == NULL) { - opts.cgi_file_pattern = "**.cgi$|**.php$"; - } - if (opts.ssi_pattern == NULL) { - opts.ssi_pattern = "**.shtml$|**.shtm$"; - } - if (opts.index_files == NULL) { - opts.index_files = "index.html,index.htm,index.shtml,index.cgi,index.php"; - } - /* Normalize path - resolve "." and ".." (in-place). */ - if (!mg_normalize_uri_path(&hm->uri, &hm->uri)) { - mg_http_send_error(nc, 400, NULL); - return; - } - if (mg_uri_to_local_path(hm, &opts, &path, &path_info) == 0) { - mg_http_send_error(nc, 404, NULL); - return; - } - mg_send_http_file(nc, path, &path_info, hm, &opts); - - MG_FREE(path); - path = NULL; - - /* Close connection for non-keep-alive requests */ - if (mg_vcmp(&hm->proto, "HTTP/1.1") != 0 || - ((hdr = mg_get_http_header(hm, "Connection")) != NULL && - mg_vcmp(hdr, "keep-alive") != 0)) { -#if 0 - nc->flags |= MG_F_SEND_AND_CLOSE; -#endif - } -} - -#endif /* MG_DISABLE_FILESYSTEM */ - -/* returns 0 on success, -1 on error */ -static int mg_http_common_url_parse(const char *url, const char *schema, - const char *schema_tls, int *use_ssl, - char **addr, int *port_i, - const char **path) { - int addr_len = 0; - - if (memcmp(url, schema, strlen(schema)) == 0) { - url += strlen(schema); - } else if (memcmp(url, schema_tls, strlen(schema_tls)) == 0) { - url += strlen(schema_tls); - *use_ssl = 1; -#ifndef MG_ENABLE_SSL - return -1; /* SSL is not enabled, cannot do HTTPS URLs */ -#endif - } - - while (*url != '\0') { - *addr = (char *) MG_REALLOC(*addr, addr_len + 5 /* space for port too. */); - if (*addr == NULL) { - DBG(("OOM")); - return -1; - } - if (*url == '/') { - break; - } - if (*url == ':') *port_i = addr_len; - (*addr)[addr_len++] = *url; - (*addr)[addr_len] = '\0'; - url++; - } - if (addr_len == 0) goto cleanup; - if (*port_i < 0) { - *port_i = addr_len; - strcpy(*addr + *port_i, *use_ssl ? ":443" : ":80"); - } else { - *port_i = -1; - } - - if (*path == NULL) *path = url; - - if (**path == '\0') *path = "/"; - - DBG(("%s %s", *addr, *path)); - - return 0; - -cleanup: - MG_FREE(*addr); - return -1; -} - -struct mg_connection *mg_connect_http_base( - struct mg_mgr *mgr, mg_event_handler_t ev_handler, - struct mg_connect_opts opts, const char *schema, const char *schema_ssl, - const char *url, const char **path, char **addr) { - struct mg_connection *nc = NULL; - int port_i = -1; - int use_ssl = 0; - - if (mg_http_common_url_parse(url, schema, schema_ssl, &use_ssl, addr, &port_i, - path) < 0) { - return NULL; - } - -#ifndef MG_ENABLE_SSL - if (use_ssl) { - MG_SET_PTRPTR(opts.error_string, "ssl is disabled"); - MG_FREE(addr); - return NULL; - } -#endif - - if ((nc = mg_connect_opt(mgr, *addr, ev_handler, opts)) != NULL) { -#ifdef MG_ENABLE_SSL - if (use_ssl && nc->ssl_ctx == NULL) { - /* - * Schema requires SSL, but no SSL parameters were provided in - * opts. In order to maintain backward compatibility, use - * NULL, NULL - */ - mg_set_ssl(nc, NULL, NULL); - } -#endif - mg_set_protocol_http_websocket(nc); - - /* If the port was addred by us, restore the original host. */ - if (port_i >= 0) (*addr)[port_i] = '\0'; - } - - return nc; -} - -struct mg_connection *mg_connect_http_opt(struct mg_mgr *mgr, - mg_event_handler_t ev_handler, - struct mg_connect_opts opts, - const char *url, - const char *extra_headers, - const char *post_data) { - char *addr = NULL; - const char *path = NULL; - struct mg_connection *nc = mg_connect_http_base( - mgr, ev_handler, opts, "http://", "https://", url, &path, &addr); - - if (nc == NULL) { - return NULL; - } - - mg_printf(nc, "%s %s HTTP/1.1\r\nHost: %s\r\nContent-Length: %" SIZE_T_FMT - "\r\n%s\r\n%s", - post_data == NULL ? "GET" : "POST", path, addr, - post_data == NULL ? 0 : strlen(post_data), - extra_headers == NULL ? "" : extra_headers, - post_data == NULL ? "" : post_data); - - MG_FREE(addr); - return nc; -} - -struct mg_connection *mg_connect_http(struct mg_mgr *mgr, - mg_event_handler_t ev_handler, - const char *url, - const char *extra_headers, - const char *post_data) { - struct mg_connect_opts opts; - memset(&opts, 0, sizeof(opts)); - return mg_connect_http_opt(mgr, ev_handler, opts, url, extra_headers, - post_data); -} - -struct mg_connection *mg_connect_ws_opt(struct mg_mgr *mgr, - mg_event_handler_t ev_handler, - struct mg_connect_opts opts, - const char *url, const char *protocol, - const char *extra_headers) { - char *addr = NULL; - const char *path = NULL; - struct mg_connection *nc = mg_connect_http_base( - mgr, ev_handler, opts, "ws://", "wss://", url, &path, &addr); - - if (nc == NULL) { - return NULL; - } - - mg_send_websocket_handshake2(nc, path, addr, protocol, extra_headers); - - MG_FREE(addr); - return nc; -} - -struct mg_connection *mg_connect_ws(struct mg_mgr *mgr, - mg_event_handler_t ev_handler, - const char *url, const char *protocol, - const char *extra_headers) { - struct mg_connect_opts opts; - memset(&opts, 0, sizeof(opts)); - return mg_connect_ws_opt(mgr, ev_handler, opts, url, protocol, extra_headers); -} - -size_t mg_parse_multipart(const char *buf, size_t buf_len, char *var_name, - size_t var_name_len, char *file_name, - size_t file_name_len, const char **data, - size_t *data_len) { - static const char cd[] = "Content-Disposition: "; - size_t hl, bl, n, ll, pos, cdl = sizeof(cd) - 1; - - if (buf == NULL || buf_len <= 0) return 0; - if ((hl = mg_http_get_request_len(buf, buf_len)) <= 0) return 0; - if (buf[0] != '-' || buf[1] != '-' || buf[2] == '\n') return 0; - - /* Get boundary length */ - bl = mg_get_line_len(buf, buf_len); - - /* Loop through headers, fetch variable name and file name */ - var_name[0] = file_name[0] = '\0'; - for (n = bl; (ll = mg_get_line_len(buf + n, hl - n)) > 0; n += ll) { - if (mg_ncasecmp(cd, buf + n, cdl) == 0) { - struct mg_str header; - header.p = buf + n + cdl; - header.len = ll - (cdl + 2); - mg_http_parse_header(&header, "name", var_name, var_name_len); - mg_http_parse_header(&header, "filename", file_name, file_name_len); - } - } - - /* Scan through the body, search for terminating boundary */ - for (pos = hl; pos + (bl - 2) < buf_len; pos++) { - if (buf[pos] == '-' && !memcmp(buf, &buf[pos], bl - 2)) { - if (data_len != NULL) *data_len = (pos - 2) - hl; - if (data != NULL) *data = buf + hl; - return pos; - } - } - - return 0; -} - -void mg_register_http_endpoint(struct mg_connection *nc, const char *uri_path, - mg_event_handler_t handler) { - struct mg_http_proto_data *pd = mg_http_get_proto_data(nc); - struct mg_http_endpoint *new_ep = - (struct mg_http_endpoint *) calloc(1, sizeof(*new_ep)); - new_ep->name = strdup(uri_path); - new_ep->name_len = strlen(new_ep->name); - new_ep->handler = handler; - new_ep->next = pd->endpoints; - pd->endpoints = new_ep; -} - -#endif /* MG_DISABLE_HTTP */ -#ifdef MG_MODULE_LINES -#line 1 "./src/util.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -/* Amalgamated: #include "common/base64.h" */ -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/util.h" */ - -const char *mg_skip(const char *s, const char *end, const char *delims, - struct mg_str *v) { - v->p = s; - while (s < end && strchr(delims, *(unsigned char *) s) == NULL) s++; - v->len = s - v->p; - while (s < end && strchr(delims, *(unsigned char *) s) != NULL) s++; - return s; -} - -static int lowercase(const char *s) { - return tolower(*(const unsigned char *) s); -} - -int mg_ncasecmp(const char *s1, const char *s2, size_t len) { - int diff = 0; - - if (len > 0) do { - diff = lowercase(s1++) - lowercase(s2++); - } while (diff == 0 && s1[-1] != '\0' && --len > 0); - - return diff; -} - -int mg_casecmp(const char *s1, const char *s2) { - return mg_ncasecmp(s1, s2, (size_t) ~0); -} - -int mg_vcasecmp(const struct mg_str *str1, const char *str2) { - size_t n2 = strlen(str2), n1 = str1->len; - int r = mg_ncasecmp(str1->p, str2, (n1 < n2) ? n1 : n2); - if (r == 0) { - return n1 - n2; - } - return r; -} - -int mg_vcmp(const struct mg_str *str1, const char *str2) { - size_t n2 = strlen(str2), n1 = str1->len; - int r = memcmp(str1->p, str2, (n1 < n2) ? n1 : n2); - if (r == 0) { - return n1 - n2; - } - return r; -} - -#ifndef MG_DISABLE_FILESYSTEM -int mg_stat(const char *path, cs_stat_t *st) { -#ifdef _WIN32 - wchar_t wpath[MAX_PATH_SIZE]; - to_wchar(path, wpath, ARRAY_SIZE(wpath)); - DBG(("[%ls] -> %d", wpath, _wstati64(wpath, st))); - return _wstati64(wpath, (struct _stati64 *) st); -#else - return stat(path, st); -#endif -} - -FILE *mg_fopen(const char *path, const char *mode) { -#ifdef _WIN32 - wchar_t wpath[MAX_PATH_SIZE], wmode[10]; - to_wchar(path, wpath, ARRAY_SIZE(wpath)); - to_wchar(mode, wmode, ARRAY_SIZE(wmode)); - return _wfopen(wpath, wmode); -#else - return fopen(path, mode); -#endif -} - -int mg_open(const char *path, int flag, int mode) { /* LCOV_EXCL_LINE */ -#ifdef _WIN32 - wchar_t wpath[MAX_PATH_SIZE]; - to_wchar(path, wpath, ARRAY_SIZE(wpath)); - return _wopen(wpath, flag, mode); -#else - return open(path, flag, mode); /* LCOV_EXCL_LINE */ -#endif -} -#endif - -void mg_base64_encode(const unsigned char *src, int src_len, char *dst) { - cs_base64_encode(src, src_len, dst); -} - -int mg_base64_decode(const unsigned char *s, int len, char *dst) { - return cs_base64_decode(s, len, dst); -} - -#ifdef MG_ENABLE_THREADS -void *mg_start_thread(void *(*f)(void *), void *p) { -#ifdef _WIN32 - return (void *) _beginthread((void(__cdecl *) (void *) ) f, 0, p); -#else - pthread_t thread_id = (pthread_t) 0; - pthread_attr_t attr; - - (void) pthread_attr_init(&attr); - (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); - -#if defined(MG_STACK_SIZE) && MG_STACK_SIZE > 1 - (void) pthread_attr_setstacksize(&attr, MG_STACK_SIZE); -#endif - - pthread_create(&thread_id, &attr, f, p); - pthread_attr_destroy(&attr); - - return (void *) thread_id; -#endif -} -#endif /* MG_ENABLE_THREADS */ - -/* Set close-on-exec bit for a given socket. */ -void mg_set_close_on_exec(sock_t sock) { -#ifdef _WIN32 - (void) SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0); -#elif defined(__unix__) - fcntl(sock, F_SETFD, FD_CLOEXEC); -#else - (void) sock; -#endif -} - -void mg_sock_addr_to_str(const union socket_address *sa, char *buf, size_t len, - int flags) { - int is_v6; - if (buf == NULL || len <= 0) return; - buf[0] = '\0'; -#if defined(MG_ENABLE_IPV6) - is_v6 = sa->sa.sa_family == AF_INET6; -#else - is_v6 = 0; -#endif - if (flags & MG_SOCK_STRINGIFY_IP) { -#if defined(MG_ENABLE_IPV6) - const void *addr = NULL; - char *start = buf; - socklen_t capacity = len; - if (!is_v6) { - addr = &sa->sin.sin_addr; - } else { - addr = (void *) &sa->sin6.sin6_addr; - if (flags & MG_SOCK_STRINGIFY_PORT) { - *buf = '['; - start++; - capacity--; - } - } - if (inet_ntop(sa->sa.sa_family, addr, start, capacity) == NULL) { - *buf = '\0'; - } -#elif defined(_WIN32) || defined(MG_LWIP) - /* Only Windoze Vista (and newer) have inet_ntop() */ - strncpy(buf, inet_ntoa(sa->sin.sin_addr), len); -#else - inet_ntop(AF_INET, (void *) &sa->sin.sin_addr, buf, len); -#endif - } - if (flags & MG_SOCK_STRINGIFY_PORT) { - int port = ntohs(sa->sin.sin_port); - if (flags & MG_SOCK_STRINGIFY_IP) { - snprintf(buf + strlen(buf), len - (strlen(buf) + 1), "%s:%d", - (is_v6 ? "]" : ""), port); - } else { - snprintf(buf, len, "%d", port); - } - } -} - -void mg_conn_addr_to_str(struct mg_connection *nc, char *buf, size_t len, - int flags) { - union socket_address sa; - memset(&sa, 0, sizeof(sa)); - mg_if_get_conn_addr(nc, flags & MG_SOCK_STRINGIFY_REMOTE, &sa); - mg_sock_addr_to_str(&sa, buf, len, flags); -} - -#ifndef MG_DISABLE_HEXDUMP -int mg_hexdump(const void *buf, int len, char *dst, int dst_len) { - const unsigned char *p = (const unsigned char *) buf; - char ascii[17] = ""; - int i, idx, n = 0; - - for (i = 0; i < len; i++) { - idx = i % 16; - if (idx == 0) { - if (i > 0) n += snprintf(dst + n, dst_len - n, " %s\n", ascii); - n += snprintf(dst + n, dst_len - n, "%04x ", i); - } - n += snprintf(dst + n, dst_len - n, " %02x", p[i]); - ascii[idx] = p[i] < 0x20 || p[i] > 0x7e ? '.' : p[i]; - ascii[idx + 1] = '\0'; - } - - while (i++ % 16) n += snprintf(dst + n, dst_len - n, "%s", " "); - n += snprintf(dst + n, dst_len - n, " %s\n\n", ascii); - - return n; -} -#endif - -int mg_avprintf(char **buf, size_t size, const char *fmt, va_list ap) { - va_list ap_copy; - int len; - - va_copy(ap_copy, ap); - len = vsnprintf(*buf, size, fmt, ap_copy); - va_end(ap_copy); - - if (len < 0) { - /* eCos and Windows are not standard-compliant and return -1 when - * the buffer is too small. Keep allocating larger buffers until we - * succeed or out of memory. */ - *buf = NULL; /* LCOV_EXCL_START */ - while (len < 0) { - MG_FREE(*buf); - size *= 2; - if ((*buf = (char *) MG_MALLOC(size)) == NULL) break; - va_copy(ap_copy, ap); - len = vsnprintf(*buf, size, fmt, ap_copy); - va_end(ap_copy); - } - /* LCOV_EXCL_STOP */ - } else if (len >= (int) size) { - /* Standard-compliant code path. Allocate a buffer that is large enough. */ - if ((*buf = (char *) MG_MALLOC(len + 1)) == NULL) { - len = -1; /* LCOV_EXCL_LINE */ - } else { /* LCOV_EXCL_LINE */ - va_copy(ap_copy, ap); - len = vsnprintf(*buf, len + 1, fmt, ap_copy); - va_end(ap_copy); - } - } - - return len; -} - -#if !defined(MG_DISABLE_HEXDUMP) -void mg_hexdump_connection(struct mg_connection *nc, const char *path, - const void *buf, int num_bytes, int ev) { -#if !defined(NO_LIBC) && !defined(MG_DISABLE_STDIO) - FILE *fp = NULL; - char *hexbuf, src[60], dst[60]; - int buf_size = num_bytes * 5 + 100; - - if (strcmp(path, "-") == 0) { - fp = stdout; - } else if (strcmp(path, "--") == 0) { - fp = stderr; -#ifndef MG_DISABLE_FILESYSTEM - } else { - fp = fopen(path, "a"); -#endif - } - if (fp == NULL) return; - - mg_conn_addr_to_str(nc, src, sizeof(src), - MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT); - mg_conn_addr_to_str(nc, dst, sizeof(dst), MG_SOCK_STRINGIFY_IP | - MG_SOCK_STRINGIFY_PORT | - MG_SOCK_STRINGIFY_REMOTE); - fprintf( - fp, "%lu %p %s %s %s %d\n", (unsigned long) time(NULL), (void *) nc, src, - ev == MG_EV_RECV ? "<-" : ev == MG_EV_SEND - ? "->" - : ev == MG_EV_ACCEPT - ? "" : "XX", - dst, num_bytes); - if (num_bytes > 0 && (hexbuf = (char *) MG_MALLOC(buf_size)) != NULL) { - mg_hexdump(buf, num_bytes, hexbuf, buf_size); - fprintf(fp, "%s", hexbuf); - MG_FREE(hexbuf); - } - if (fp != stdin && fp != stdout) fclose(fp); -#endif -} -#endif - -int mg_is_big_endian(void) { - static const int n = 1; - /* TODO(mkm) use compiletime check with 4-byte char literal */ - return ((char *) &n)[0] == 0; -} - -const char *mg_next_comma_list_entry(const char *list, struct mg_str *val, - struct mg_str *eq_val) { - if (list == NULL || *list == '\0') { - /* End of the list */ - list = NULL; - } else { - val->p = list; - if ((list = strchr(val->p, ',')) != NULL) { - /* Comma found. Store length and shift the list ptr */ - val->len = list - val->p; - list++; - } else { - /* This value is the last one */ - list = val->p + strlen(val->p); - val->len = list - val->p; - } - - if (eq_val != NULL) { - /* Value has form "x=y", adjust pointers and lengths */ - /* so that val points to "x", and eq_val points to "y". */ - eq_val->len = 0; - eq_val->p = (const char *) memchr(val->p, '=', val->len); - if (eq_val->p != NULL) { - eq_val->p++; /* Skip over '=' character */ - eq_val->len = val->p + val->len - eq_val->p; - val->len = (eq_val->p - val->p) - 1; - } - } - } - - return list; -} - -int mg_match_prefix_n(const struct mg_str pattern, const struct mg_str str) { - const char *or_str; - size_t len, i = 0, j = 0; - int res; - - if ((or_str = (const char *) memchr(pattern.p, '|', pattern.len)) != NULL) { - struct mg_str pstr = {pattern.p, (size_t)(or_str - pattern.p)}; - res = mg_match_prefix_n(pstr, str); - if (res > 0) return res; - pstr.p = or_str + 1; - pstr.len = (pattern.p + pattern.len) - (or_str + 1); - return mg_match_prefix_n(pstr, str); - } - - for (; i < pattern.len; i++, j++) { - if (pattern.p[i] == '?' && j != str.len) { - continue; - } else if (pattern.p[i] == '$') { - return j == str.len ? (int) j : -1; - } else if (pattern.p[i] == '*') { - i++; - if (pattern.p[i] == '*') { - i++; - len = str.len - j; - } else { - len = 0; - while (j + len != str.len && str.p[len] != '/') { - len++; - } - } - if (i == pattern.len) { - return j + len; - } - do { - const struct mg_str pstr = {pattern.p + i, pattern.len - i}; - const struct mg_str sstr = {str.p + j + len, str.len - j - len}; - res = mg_match_prefix_n(pstr, sstr); - } while (res == -1 && len-- > 0); - return res == -1 ? -1 : (int) (j + res + len); - } else if (lowercase(&pattern.p[i]) != lowercase(&str.p[j])) { - return -1; - } - } - return j; -} - -int mg_match_prefix(const char *pattern, int pattern_len, const char *str) { - const struct mg_str pstr = {pattern, (size_t) pattern_len}; - return mg_match_prefix_n(pstr, mg_mk_str(str)); -} - -struct mg_str mg_mk_str(const char *s) { - struct mg_str ret = {s, 0}; - if (s != NULL) ret.len = strlen(s); - return ret; -} -#ifdef MG_MODULE_LINES -#line 1 "./src/json-rpc.c" -#endif -/* Copyright (c) 2014 Cesanta Software Limited */ -/* All rights reserved */ - -#ifndef MG_DISABLE_JSON_RPC - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/json-rpc.h" */ -/* Amalgamated: #include "mongoose/deps/frozen/frozen.h" */ - -int mg_rpc_create_reply(char *buf, int len, const struct mg_rpc_request *req, - const char *result_fmt, ...) { - static const struct json_token null_tok = {"null", 4, 0, JSON_TYPE_NULL}; - const struct json_token *id = req->id == NULL ? &null_tok : req->id; - va_list ap; - int n = 0; - - n += json_emit(buf + n, len - n, "{s:s,s:", "jsonrpc", "2.0", "id"); - if (id->type == JSON_TYPE_STRING) { - n += json_emit_quoted_str(buf + n, len - n, id->ptr, id->len); - } else { - n += json_emit_unquoted_str(buf + n, len - n, id->ptr, id->len); - } - n += json_emit(buf + n, len - n, ",s:", "result"); - - va_start(ap, result_fmt); - n += json_emit_va(buf + n, len - n, result_fmt, ap); - va_end(ap); - - n += json_emit(buf + n, len - n, "}"); - - return n; -} - -int mg_rpc_create_request(char *buf, int len, const char *method, - const char *id, const char *params_fmt, ...) { - va_list ap; - int n = 0; - - n += json_emit(buf + n, len - n, "{s:s,s:s,s:s,s:", "jsonrpc", "2.0", "id", - id, "method", method, "params"); - va_start(ap, params_fmt); - n += json_emit_va(buf + n, len - n, params_fmt, ap); - va_end(ap); - - n += json_emit(buf + n, len - n, "}"); - - return n; -} - -int mg_rpc_create_error(char *buf, int len, struct mg_rpc_request *req, - int code, const char *message, const char *fmt, ...) { - va_list ap; - int n = 0; - - n += json_emit(buf + n, len - n, "{s:s,s:V,s:{s:i,s:s,s:", "jsonrpc", "2.0", - "id", req->id == NULL ? "null" : req->id->ptr, - req->id == NULL ? 4 : req->id->len, "error", "code", - (long) code, "message", message, "data"); - va_start(ap, fmt); - n += json_emit_va(buf + n, len - n, fmt, ap); - va_end(ap); - - n += json_emit(buf + n, len - n, "}}"); - - return n; -} - -int mg_rpc_create_std_error(char *buf, int len, struct mg_rpc_request *req, - int code) { - const char *message = NULL; - - switch (code) { - case JSON_RPC_PARSE_ERROR: - message = "parse error"; - break; - case JSON_RPC_INVALID_REQUEST_ERROR: - message = "invalid request"; - break; - case JSON_RPC_METHOD_NOT_FOUND_ERROR: - message = "method not found"; - break; - case JSON_RPC_INVALID_PARAMS_ERROR: - message = "invalid parameters"; - break; - case JSON_RPC_SERVER_ERROR: - message = "server error"; - break; - default: - message = "unspecified error"; - break; - } - - return mg_rpc_create_error(buf, len, req, code, message, "N"); -} - -int mg_rpc_dispatch(const char *buf, int len, char *dst, int dst_len, - const char **methods, mg_rpc_handler_t *handlers) { - struct json_token tokens[200]; - struct mg_rpc_request req; - int i, n; - - memset(&req, 0, sizeof(req)); - n = parse_json(buf, len, tokens, sizeof(tokens) / sizeof(tokens[0])); - if (n <= 0) { - int err_code = (n == JSON_STRING_INVALID) ? JSON_RPC_PARSE_ERROR - : JSON_RPC_SERVER_ERROR; - return mg_rpc_create_std_error(dst, dst_len, &req, err_code); - } - - req.message = tokens; - req.id = find_json_token(tokens, "id"); - req.method = find_json_token(tokens, "method"); - req.params = find_json_token(tokens, "params"); - - if (req.id == NULL || req.method == NULL) { - return mg_rpc_create_std_error(dst, dst_len, &req, - JSON_RPC_INVALID_REQUEST_ERROR); - } - - for (i = 0; methods[i] != NULL; i++) { - int mlen = strlen(methods[i]); - if (mlen == req.method->len && - memcmp(methods[i], req.method->ptr, mlen) == 0) - break; - } - - if (methods[i] == NULL) { - return mg_rpc_create_std_error(dst, dst_len, &req, - JSON_RPC_METHOD_NOT_FOUND_ERROR); - } - - return handlers[i](dst, dst_len, &req); -} - -int mg_rpc_parse_reply(const char *buf, int len, struct json_token *toks, - int max_toks, struct mg_rpc_reply *rep, - struct mg_rpc_error *er) { - int n = parse_json(buf, len, toks, max_toks); - - memset(rep, 0, sizeof(*rep)); - memset(er, 0, sizeof(*er)); - - if (n > 0) { - if ((rep->result = find_json_token(toks, "result")) != NULL) { - rep->message = toks; - rep->id = find_json_token(toks, "id"); - } else { - er->message = toks; - er->id = find_json_token(toks, "id"); - er->error_code = find_json_token(toks, "error.code"); - er->error_message = find_json_token(toks, "error.message"); - er->error_data = find_json_token(toks, "error.data"); - } - } - return n; -} - -#endif /* MG_DISABLE_JSON_RPC */ -#ifdef MG_MODULE_LINES -#line 1 "./src/mqtt.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef MG_DISABLE_MQTT - -#include - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/mqtt.h" */ - -MG_INTERNAL int parse_mqtt(struct mbuf *io, struct mg_mqtt_message *mm) { - uint8_t header; - int cmd; - size_t len = 0; - int var_len = 0; - char *vlen = &io->buf[1]; - - if (io->len < 2) return -1; - - header = io->buf[0]; - cmd = header >> 4; - - /* decode mqtt variable length */ - do { - len += (*vlen & 127) << 7 * (vlen - &io->buf[1]); - } while ((*vlen++ & 128) != 0 && ((size_t)(vlen - io->buf) <= io->len)); - - if (len != 0 && io->len < (size_t)(len - 1)) return -1; - - mbuf_remove(io, 1 + (vlen - &io->buf[1])); - mm->cmd = cmd; - mm->qos = MG_MQTT_GET_QOS(header); - - switch (cmd) { - case MG_MQTT_CMD_CONNECT: - /* TODO(mkm): parse keepalive and will */ - break; - case MG_MQTT_CMD_CONNACK: - mm->connack_ret_code = io->buf[1]; - var_len = 2; - break; - case MG_MQTT_CMD_PUBACK: - case MG_MQTT_CMD_PUBREC: - case MG_MQTT_CMD_PUBREL: - case MG_MQTT_CMD_PUBCOMP: - case MG_MQTT_CMD_SUBACK: - mm->message_id = ntohs(*(uint16_t *) io->buf); - var_len = 2; - break; - case MG_MQTT_CMD_PUBLISH: { - uint16_t topic_len = ntohs(*(uint16_t *) io->buf); - mm->topic = (char *) MG_MALLOC(topic_len + 1); - mm->topic[topic_len] = 0; - strncpy(mm->topic, io->buf + 2, topic_len); - var_len = topic_len + 2; - - if (MG_MQTT_GET_QOS(header) > 0) { - mm->message_id = ntohs(*(uint16_t *) io->buf); - var_len += 2; - } - } break; - case MG_MQTT_CMD_SUBSCRIBE: - /* - * topic expressions are left in the payload and can be parsed with - * `mg_mqtt_next_subscribe_topic` - */ - mm->message_id = ntohs(*(uint16_t *) io->buf); - var_len = 2; - break; - default: - /* Unhandled command */ - break; - } - - mbuf_remove(io, var_len); - return len - var_len; -} - -static void mqtt_handler(struct mg_connection *nc, int ev, void *ev_data) { - int len; - struct mbuf *io = &nc->recv_mbuf; - struct mg_mqtt_message mm; - memset(&mm, 0, sizeof(mm)); - - nc->handler(nc, ev, ev_data); - - switch (ev) { - case MG_EV_RECV: - len = parse_mqtt(io, &mm); - if (len == -1) break; /* not fully buffered */ - mm.payload.p = io->buf; - mm.payload.len = len; - - nc->handler(nc, MG_MQTT_EVENT_BASE + mm.cmd, &mm); - - if (mm.topic) { - MG_FREE(mm.topic); - } - mbuf_remove(io, mm.payload.len); - break; - } -} - -void mg_set_protocol_mqtt(struct mg_connection *nc) { - nc->proto_handler = mqtt_handler; -} - -void mg_send_mqtt_handshake(struct mg_connection *nc, const char *client_id) { - static struct mg_send_mqtt_handshake_opts opts; - mg_send_mqtt_handshake_opt(nc, client_id, opts); -} - -void mg_send_mqtt_handshake_opt(struct mg_connection *nc, const char *client_id, - struct mg_send_mqtt_handshake_opts opts) { - uint8_t header = MG_MQTT_CMD_CONNECT << 4; - uint8_t rem_len; - uint16_t keep_alive; - uint16_t len; - - /* - * 9: version_header(len, magic_string, version_number), 1: flags, 2: - * keep-alive timer, - * 2: client_identifier_len, n: client_id - */ - rem_len = 9 + 1 + 2 + 2 + strlen(client_id); - - if (opts.user_name != NULL) { - opts.flags |= MG_MQTT_HAS_USER_NAME; - rem_len += strlen(opts.user_name) + 2; - } - if (opts.password != NULL) { - opts.flags |= MG_MQTT_HAS_PASSWORD; - rem_len += strlen(opts.password) + 2; - } - - mg_send(nc, &header, 1); - mg_send(nc, &rem_len, 1); - mg_send(nc, "\00\06MQIsdp\03", 9); - mg_send(nc, &opts.flags, 1); - - if (opts.keep_alive == 0) { - opts.keep_alive = 60; - } - keep_alive = htons(opts.keep_alive); - mg_send(nc, &keep_alive, 2); - - len = htons(strlen(client_id)); - mg_send(nc, &len, 2); - mg_send(nc, client_id, strlen(client_id)); - - if (opts.flags & MG_MQTT_HAS_USER_NAME) { - len = htons(strlen(opts.user_name)); - mg_send(nc, &len, 2); - mg_send(nc, opts.user_name, strlen(opts.user_name)); - } - if (opts.flags & MG_MQTT_HAS_PASSWORD) { - len = htons(strlen(opts.password)); - mg_send(nc, &len, 2); - mg_send(nc, opts.password, strlen(opts.password)); - } -} - -static void mg_mqtt_prepend_header(struct mg_connection *nc, uint8_t cmd, - uint8_t flags, size_t len) { - size_t off = nc->send_mbuf.len - len; - uint8_t header = cmd << 4 | (uint8_t) flags; - - uint8_t buf[1 + sizeof(size_t)]; - uint8_t *vlen = &buf[1]; - - assert(nc->send_mbuf.len >= len); - - buf[0] = header; - - /* mqtt variable length encoding */ - do { - *vlen = len % 0x80; - len /= 0x80; - if (len > 0) *vlen |= 0x80; - vlen++; - } while (len > 0); - - mbuf_insert(&nc->send_mbuf, off, buf, vlen - buf); -} - -void mg_mqtt_publish(struct mg_connection *nc, const char *topic, - uint16_t message_id, int flags, const void *data, - size_t len) { - size_t old_len = nc->send_mbuf.len; - - uint16_t topic_len = htons(strlen(topic)); - uint16_t message_id_net = htons(message_id); - - mg_send(nc, &topic_len, 2); - mg_send(nc, topic, strlen(topic)); - if (MG_MQTT_GET_QOS(flags) > 0) { - mg_send(nc, &message_id_net, 2); - } - mg_send(nc, data, len); - - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_PUBLISH, flags, - nc->send_mbuf.len - old_len); -} - -void mg_mqtt_subscribe(struct mg_connection *nc, - const struct mg_mqtt_topic_expression *topics, - size_t topics_len, uint16_t message_id) { - size_t old_len = nc->send_mbuf.len; - - uint16_t message_id_n = htons(message_id); - size_t i; - - mg_send(nc, (char *) &message_id_n, 2); - for (i = 0; i < topics_len; i++) { - uint16_t topic_len_n = htons(strlen(topics[i].topic)); - mg_send(nc, &topic_len_n, 2); - mg_send(nc, topics[i].topic, strlen(topics[i].topic)); - mg_send(nc, &topics[i].qos, 1); - } - - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_SUBSCRIBE, MG_MQTT_QOS(1), - nc->send_mbuf.len - old_len); -} - -int mg_mqtt_next_subscribe_topic(struct mg_mqtt_message *msg, - struct mg_str *topic, uint8_t *qos, int pos) { - unsigned char *buf = (unsigned char *) msg->payload.p + pos; - if ((size_t) pos >= msg->payload.len) { - return -1; - } - - topic->len = buf[0] << 8 | buf[1]; - topic->p = (char *) buf + 2; - *qos = buf[2 + topic->len]; - return pos + 2 + topic->len + 1; -} - -void mg_mqtt_unsubscribe(struct mg_connection *nc, char **topics, - size_t topics_len, uint16_t message_id) { - size_t old_len = nc->send_mbuf.len; - - uint16_t message_id_n = htons(message_id); - size_t i; - - mg_send(nc, (char *) &message_id_n, 2); - for (i = 0; i < topics_len; i++) { - uint16_t topic_len_n = htons(strlen(topics[i])); - mg_send(nc, &topic_len_n, 2); - mg_send(nc, topics[i], strlen(topics[i])); - } - - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_UNSUBSCRIBE, MG_MQTT_QOS(1), - nc->send_mbuf.len - old_len); -} - -void mg_mqtt_connack(struct mg_connection *nc, uint8_t return_code) { - uint8_t unused = 0; - mg_send(nc, &unused, 1); - mg_send(nc, &return_code, 1); - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_CONNACK, 0, 2); -} - -/* - * Sends a command which contains only a `message_id` and a QoS level of 1. - * - * Helper function. - */ -static void mg_send_mqtt_short_command(struct mg_connection *nc, uint8_t cmd, - uint16_t message_id) { - uint16_t message_id_net = htons(message_id); - mg_send(nc, &message_id_net, 2); - mg_mqtt_prepend_header(nc, cmd, MG_MQTT_QOS(1), 2); -} - -void mg_mqtt_puback(struct mg_connection *nc, uint16_t message_id) { - mg_send_mqtt_short_command(nc, MG_MQTT_CMD_PUBACK, message_id); -} - -void mg_mqtt_pubrec(struct mg_connection *nc, uint16_t message_id) { - mg_send_mqtt_short_command(nc, MG_MQTT_CMD_PUBREC, message_id); -} - -void mg_mqtt_pubrel(struct mg_connection *nc, uint16_t message_id) { - mg_send_mqtt_short_command(nc, MG_MQTT_CMD_PUBREL, message_id); -} - -void mg_mqtt_pubcomp(struct mg_connection *nc, uint16_t message_id) { - mg_send_mqtt_short_command(nc, MG_MQTT_CMD_PUBCOMP, message_id); -} - -void mg_mqtt_suback(struct mg_connection *nc, uint8_t *qoss, size_t qoss_len, - uint16_t message_id) { - size_t i; - uint16_t message_id_net = htons(message_id); - mg_send(nc, &message_id_net, 2); - for (i = 0; i < qoss_len; i++) { - mg_send(nc, &qoss[i], 1); - } - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_SUBACK, MG_MQTT_QOS(1), 2 + qoss_len); -} - -void mg_mqtt_unsuback(struct mg_connection *nc, uint16_t message_id) { - mg_send_mqtt_short_command(nc, MG_MQTT_CMD_UNSUBACK, message_id); -} - -void mg_mqtt_ping(struct mg_connection *nc) { - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_PINGREQ, 0, 0); -} - -void mg_mqtt_pong(struct mg_connection *nc) { - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_PINGRESP, 0, 0); -} - -void mg_mqtt_disconnect(struct mg_connection *nc) { - mg_mqtt_prepend_header(nc, MG_MQTT_CMD_DISCONNECT, 0, 0); -} - -#endif /* MG_DISABLE_MQTT */ -#ifdef MG_MODULE_LINES -#line 1 "./src/mqtt-broker.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/mqtt-broker.h" */ - -#ifdef MG_ENABLE_MQTT_BROKER - -static void mg_mqtt_session_init(struct mg_mqtt_broker *brk, - struct mg_mqtt_session *s, - struct mg_connection *nc) { - s->brk = brk; - s->subscriptions = NULL; - s->num_subscriptions = 0; - s->nc = nc; -} - -static void mg_mqtt_add_session(struct mg_mqtt_session *s) { - s->next = s->brk->sessions; - s->brk->sessions = s; - s->prev = NULL; - if (s->next != NULL) s->next->prev = s; -} - -static void mg_mqtt_remove_session(struct mg_mqtt_session *s) { - if (s->prev == NULL) s->brk->sessions = s->next; - if (s->prev) s->prev->next = s->next; - if (s->next) s->next->prev = s->prev; -} - -static void mg_mqtt_destroy_session(struct mg_mqtt_session *s) { - size_t i; - for (i = 0; i < s->num_subscriptions; i++) { - MG_FREE((void *) s->subscriptions[i].topic); - } - MG_FREE(s->subscriptions); - MG_FREE(s); -} - -static void mg_mqtt_close_session(struct mg_mqtt_session *s) { - mg_mqtt_remove_session(s); - mg_mqtt_destroy_session(s); -} - -void mg_mqtt_broker_init(struct mg_mqtt_broker *brk, void *user_data) { - brk->sessions = NULL; - brk->user_data = user_data; -} - -static void mg_mqtt_broker_handle_connect(struct mg_mqtt_broker *brk, - struct mg_connection *nc) { - struct mg_mqtt_session *s = (struct mg_mqtt_session *) malloc(sizeof *s); - if (s == NULL) { - /* LCOV_EXCL_START */ - mg_mqtt_connack(nc, MG_EV_MQTT_CONNACK_SERVER_UNAVAILABLE); - return; - /* LCOV_EXCL_STOP */ - } - - /* TODO(mkm): check header (magic and version) */ - - mg_mqtt_session_init(brk, s, nc); - s->user_data = nc->user_data; - nc->user_data = s; - mg_mqtt_add_session(s); - - mg_mqtt_connack(nc, MG_EV_MQTT_CONNACK_ACCEPTED); -} - -static void mg_mqtt_broker_handle_subscribe(struct mg_connection *nc, - struct mg_mqtt_message *msg) { - struct mg_mqtt_session *ss = (struct mg_mqtt_session *) nc->user_data; - uint8_t qoss[512]; - size_t qoss_len = 0; - struct mg_str topic; - uint8_t qos; - int pos; - struct mg_mqtt_topic_expression *te; - - for (pos = 0; - (pos = mg_mqtt_next_subscribe_topic(msg, &topic, &qos, pos)) != -1;) { - qoss[qoss_len++] = qos; - } - - ss->subscriptions = (struct mg_mqtt_topic_expression *) realloc( - ss->subscriptions, sizeof(*ss->subscriptions) * qoss_len); - for (pos = 0; - (pos = mg_mqtt_next_subscribe_topic(msg, &topic, &qos, pos)) != -1; - ss->num_subscriptions++) { - te = &ss->subscriptions[ss->num_subscriptions]; - te->topic = (char *) malloc(topic.len + 1); - te->qos = qos; - strncpy((char *) te->topic, topic.p, topic.len + 1); - } - - mg_mqtt_suback(nc, qoss, qoss_len, msg->message_id); -} - -/* - * Matches a topic against a topic expression - * - * See http://goo.gl/iWk21X - * - * Returns 1 if it matches; 0 otherwise. - */ -static int mg_mqtt_match_topic_expression(const char *exp, const char *topic) { - /* TODO(mkm): implement real matching */ - int len = strlen(exp); - if (strchr(exp, '#')) { - len -= 2; - } - return strncmp(exp, topic, len) == 0; -} - -static void mg_mqtt_broker_handle_publish(struct mg_mqtt_broker *brk, - struct mg_mqtt_message *msg) { - struct mg_mqtt_session *s; - size_t i; - - for (s = mg_mqtt_next(brk, NULL); s != NULL; s = mg_mqtt_next(brk, s)) { - for (i = 0; i < s->num_subscriptions; i++) { - if (mg_mqtt_match_topic_expression(s->subscriptions[i].topic, - msg->topic)) { - mg_mqtt_publish(s->nc, msg->topic, 0, 0, msg->payload.p, - msg->payload.len); - break; - } - } - } -} - -void mg_mqtt_broker(struct mg_connection *nc, int ev, void *data) { - struct mg_mqtt_message *msg = (struct mg_mqtt_message *) data; - struct mg_mqtt_broker *brk; - - if (nc->listener) { - brk = (struct mg_mqtt_broker *) nc->listener->user_data; - } else { - brk = (struct mg_mqtt_broker *) nc->user_data; - } - - switch (ev) { - case MG_EV_ACCEPT: - mg_set_protocol_mqtt(nc); - break; - case MG_EV_MQTT_CONNECT: - mg_mqtt_broker_handle_connect(brk, nc); - break; - case MG_EV_MQTT_SUBSCRIBE: - mg_mqtt_broker_handle_subscribe(nc, msg); - break; - case MG_EV_MQTT_PUBLISH: - mg_mqtt_broker_handle_publish(brk, msg); - break; - case MG_EV_CLOSE: - if (nc->listener) { - mg_mqtt_close_session((struct mg_mqtt_session *) nc->user_data); - } - break; - } -} - -struct mg_mqtt_session *mg_mqtt_next(struct mg_mqtt_broker *brk, - struct mg_mqtt_session *s) { - return s == NULL ? brk->sessions : s->next; -} - -#endif /* MG_ENABLE_MQTT_BROKER */ -#ifdef MG_MODULE_LINES -#line 1 "./src/dns.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef MG_DISABLE_DNS - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/dns.h" */ - -static int mg_dns_tid = 0xa0; - -struct mg_dns_header { - uint16_t transaction_id; - uint16_t flags; - uint16_t num_questions; - uint16_t num_answers; - uint16_t num_authority_prs; - uint16_t num_other_prs; -}; - -struct mg_dns_resource_record *mg_dns_next_record( - struct mg_dns_message *msg, int query, - struct mg_dns_resource_record *prev) { - struct mg_dns_resource_record *rr; - - for (rr = (prev == NULL ? msg->answers : prev + 1); - rr - msg->answers < msg->num_answers; rr++) { - if (rr->rtype == query) { - return rr; - } - } - return NULL; -} - -int mg_dns_parse_record_data(struct mg_dns_message *msg, - struct mg_dns_resource_record *rr, void *data, - size_t data_len) { - switch (rr->rtype) { - case MG_DNS_A_RECORD: - if (data_len < sizeof(struct in_addr)) { - return -1; - } - if (rr->rdata.p + data_len > msg->pkt.p + msg->pkt.len) { - return -1; - } - memcpy(data, rr->rdata.p, data_len); - return 0; -#ifdef MG_ENABLE_IPV6 - case MG_DNS_AAAA_RECORD: - if (data_len < sizeof(struct in6_addr)) { - return -1; /* LCOV_EXCL_LINE */ - } - memcpy(data, rr->rdata.p, data_len); - return 0; -#endif - case MG_DNS_CNAME_RECORD: - mg_dns_uncompress_name(msg, &rr->rdata, (char *) data, data_len); - return 0; - } - - return -1; -} - -int mg_dns_insert_header(struct mbuf *io, size_t pos, - struct mg_dns_message *msg) { - struct mg_dns_header header; - - memset(&header, 0, sizeof(header)); - header.transaction_id = msg->transaction_id; - header.flags = htons(msg->flags); - header.num_questions = htons(msg->num_questions); - header.num_answers = htons(msg->num_answers); - - return mbuf_insert(io, pos, &header, sizeof(header)); -} - -int mg_dns_copy_questions(struct mbuf *io, struct mg_dns_message *msg) { - unsigned char *begin, *end; - struct mg_dns_resource_record *last_q; - if (msg->num_questions <= 0) return 0; - begin = (unsigned char *) msg->pkt.p + sizeof(struct mg_dns_header); - last_q = &msg->questions[msg->num_questions - 1]; - end = (unsigned char *) last_q->name.p + last_q->name.len + 4; - return mbuf_append(io, begin, end - begin); -} - -static int mg_dns_encode_name(struct mbuf *io, const char *name, size_t len) { - const char *s; - unsigned char n; - size_t pos = io->len; - - do { - if ((s = strchr(name, '.')) == NULL) { - s = name + len; - } - - if (s - name > 127) { - return -1; /* TODO(mkm) cover */ - } - n = s - name; /* chunk length */ - mbuf_append(io, &n, 1); /* send length */ - mbuf_append(io, name, n); - - if (*s == '.') { - n++; - } - - name += n; - len -= n; - } while (*s != '\0'); - mbuf_append(io, "\0", 1); /* Mark end of host name */ - - return io->len - pos; -} - -int mg_dns_encode_record(struct mbuf *io, struct mg_dns_resource_record *rr, - const char *name, size_t nlen, const void *rdata, - size_t rlen) { - size_t pos = io->len; - uint16_t u16; - uint32_t u32; - - if (rr->kind == MG_DNS_INVALID_RECORD) { - return -1; /* LCOV_EXCL_LINE */ - } - - if (mg_dns_encode_name(io, name, nlen) == -1) { - return -1; - } - - u16 = htons(rr->rtype); - mbuf_append(io, &u16, 2); - u16 = htons(rr->rclass); - mbuf_append(io, &u16, 2); - - if (rr->kind == MG_DNS_ANSWER) { - u32 = htonl(rr->ttl); - mbuf_append(io, &u32, 4); - - if (rr->rtype == MG_DNS_CNAME_RECORD) { - int clen; - /* fill size after encoding */ - size_t off = io->len; - mbuf_append(io, &u16, 2); - if ((clen = mg_dns_encode_name(io, (const char *) rdata, rlen)) == -1) { - return -1; - } - u16 = clen; - io->buf[off] = u16 >> 8; - io->buf[off + 1] = u16 & 0xff; - } else { - u16 = htons(rlen); - mbuf_append(io, &u16, 2); - mbuf_append(io, rdata, rlen); - } - } - - return io->len - pos; -} - -void mg_send_dns_query(struct mg_connection *nc, const char *name, - int query_type) { - struct mg_dns_message *msg = - (struct mg_dns_message *) MG_CALLOC(1, sizeof(*msg)); - struct mbuf pkt; - struct mg_dns_resource_record *rr = &msg->questions[0]; - - DBG(("%s %d", name, query_type)); - - mbuf_init(&pkt, 64 /* Start small, it'll grow as needed. */); - - msg->transaction_id = ++mg_dns_tid; - msg->flags = 0x100; - msg->num_questions = 1; - - mg_dns_insert_header(&pkt, 0, msg); - - rr->rtype = query_type; - rr->rclass = 1; /* Class: inet */ - rr->kind = MG_DNS_QUESTION; - - if (mg_dns_encode_record(&pkt, rr, name, strlen(name), NULL, 0) == -1) { - /* TODO(mkm): return an error code */ - goto cleanup; /* LCOV_EXCL_LINE */ - } - - /* TCP DNS requires messages to be prefixed with len */ - if (!(nc->flags & MG_F_UDP)) { - uint16_t len = htons(pkt.len); - mbuf_insert(&pkt, 0, &len, 2); - } - - mg_send(nc, pkt.buf, pkt.len); - mbuf_free(&pkt); - -cleanup: - MG_FREE(msg); -} - -static unsigned char *mg_parse_dns_resource_record( - unsigned char *data, unsigned char *end, struct mg_dns_resource_record *rr, - int reply) { - unsigned char *name = data; - int chunk_len, data_len; - - while (data < end && (chunk_len = *data)) { - if (((unsigned char *) data)[0] & 0xc0) { - data += 1; - break; - } - data += chunk_len + 1; - } - - if (data > end - 5) { - return NULL; - } - - rr->name.p = (char *) name; - rr->name.len = data - name + 1; - data++; - - rr->rtype = data[0] << 8 | data[1]; - data += 2; - - rr->rclass = data[0] << 8 | data[1]; - data += 2; - - rr->kind = reply ? MG_DNS_ANSWER : MG_DNS_QUESTION; - if (reply) { - if (data >= end - 6) { - return NULL; - } - - rr->ttl = (uint32_t) data[0] << 24 | (uint32_t) data[1] << 16 | - data[2] << 8 | data[3]; - data += 4; - - data_len = *data << 8 | *(data + 1); - data += 2; - - rr->rdata.p = (char *) data; - rr->rdata.len = data_len; - data += data_len; - } - return data; -} - -int mg_parse_dns(const char *buf, int len, struct mg_dns_message *msg) { - struct mg_dns_header *header = (struct mg_dns_header *) buf; - unsigned char *data = (unsigned char *) buf + sizeof(*header); - unsigned char *end = (unsigned char *) buf + len; - int i; - - memset(msg, 0, sizeof(*msg)); - msg->pkt.p = buf; - msg->pkt.len = len; - - if (len < (int) sizeof(*header)) return -1; - - msg->transaction_id = header->transaction_id; - msg->flags = ntohs(header->flags); - msg->num_questions = ntohs(header->num_questions); - if (msg->num_questions > (int) ARRAY_SIZE(msg->questions)) { - msg->num_questions = (int) ARRAY_SIZE(msg->questions); - } - msg->num_answers = ntohs(header->num_answers); - if (msg->num_answers > (int) ARRAY_SIZE(msg->answers)) { - msg->num_answers = (int) ARRAY_SIZE(msg->answers); - } - - for (i = 0; i < msg->num_questions; i++) { - data = mg_parse_dns_resource_record(data, end, &msg->questions[i], 0); - if (data == NULL) return -1; - } - - for (i = 0; i < msg->num_answers; i++) { - data = mg_parse_dns_resource_record(data, end, &msg->answers[i], 1); - if (data == NULL) return -1; - } - - return 0; -} - -size_t mg_dns_uncompress_name(struct mg_dns_message *msg, struct mg_str *name, - char *dst, int dst_len) { - int chunk_len; - char *old_dst = dst; - const unsigned char *data = (unsigned char *) name->p; - const unsigned char *end = (unsigned char *) msg->pkt.p + msg->pkt.len; - - if (data >= end) { - return 0; - } - - while ((chunk_len = *data++)) { - int leeway = dst_len - (dst - old_dst); - if (data >= end) { - return 0; - } - - if (chunk_len & 0xc0) { - uint16_t off = (data[-1] & (~0xc0)) << 8 | data[0]; - if (off >= msg->pkt.len) { - return 0; - } - data = (unsigned char *) msg->pkt.p + off; - continue; - } - if (chunk_len > leeway) { - chunk_len = leeway; - } - - if (data + chunk_len >= end) { - return 0; - } - - memcpy(dst, data, chunk_len); - data += chunk_len; - dst += chunk_len; - leeway -= chunk_len; - if (leeway == 0) { - return dst - old_dst; - } - *dst++ = '.'; - } - - if (dst != old_dst) { - *--dst = 0; - } - return dst - old_dst; -} - -static void dns_handler(struct mg_connection *nc, int ev, void *ev_data) { - struct mbuf *io = &nc->recv_mbuf; - struct mg_dns_message msg; - - /* Pass low-level events to the user handler */ - nc->handler(nc, ev, ev_data); - - switch (ev) { - case MG_EV_RECV: - if (!(nc->flags & MG_F_UDP)) { - mbuf_remove(&nc->recv_mbuf, 2); - } - if (mg_parse_dns(nc->recv_mbuf.buf, nc->recv_mbuf.len, &msg) == -1) { - /* reply + recursion allowed + format error */ - memset(&msg, 0, sizeof(msg)); - msg.flags = 0x8081; - mg_dns_insert_header(io, 0, &msg); - if (!(nc->flags & MG_F_UDP)) { - uint16_t len = htons(io->len); - mbuf_insert(io, 0, &len, 2); - } - mg_send(nc, io->buf, io->len); - } else { - /* Call user handler with parsed message */ - nc->handler(nc, MG_DNS_MESSAGE, &msg); - } - mbuf_remove(io, io->len); - break; - } -} - -void mg_set_protocol_dns(struct mg_connection *nc) { - nc->proto_handler = dns_handler; -} - -#endif /* MG_DISABLE_DNS */ -#ifdef MG_MODULE_LINES -#line 1 "./src/dns-server.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifdef MG_ENABLE_DNS_SERVER - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/dns-server.h" */ - -struct mg_dns_reply mg_dns_create_reply(struct mbuf *io, - struct mg_dns_message *msg) { - struct mg_dns_reply rep; - rep.msg = msg; - rep.io = io; - rep.start = io->len; - - /* reply + recursion allowed */ - msg->flags |= 0x8080; - mg_dns_copy_questions(io, msg); - - msg->num_answers = 0; - return rep; -} - -void mg_dns_send_reply(struct mg_connection *nc, struct mg_dns_reply *r) { - size_t sent = r->io->len - r->start; - mg_dns_insert_header(r->io, r->start, r->msg); - if (!(nc->flags & MG_F_UDP)) { - uint16_t len = htons(sent); - mbuf_insert(r->io, r->start, &len, 2); - } - - if (&nc->send_mbuf != r->io) { - mg_send(nc, r->io->buf + r->start, r->io->len - r->start); - r->io->len = r->start; - } -} - -int mg_dns_reply_record(struct mg_dns_reply *reply, - struct mg_dns_resource_record *question, - const char *name, int rtype, int ttl, const void *rdata, - size_t rdata_len) { - struct mg_dns_message *msg = (struct mg_dns_message *) reply->msg; - char rname[512]; - struct mg_dns_resource_record *ans = &msg->answers[msg->num_answers]; - if (msg->num_answers >= MG_MAX_DNS_ANSWERS) { - return -1; /* LCOV_EXCL_LINE */ - } - - if (name == NULL) { - name = rname; - rname[511] = 0; - mg_dns_uncompress_name(msg, &question->name, rname, sizeof(rname) - 1); - } - - *ans = *question; - ans->kind = MG_DNS_ANSWER; - ans->rtype = rtype; - ans->ttl = ttl; - - if (mg_dns_encode_record(reply->io, ans, name, strlen(name), rdata, - rdata_len) == -1) { - return -1; /* LCOV_EXCL_LINE */ - }; - - msg->num_answers++; - return 0; -} - -#endif /* MG_ENABLE_DNS_SERVER */ -#ifdef MG_MODULE_LINES -#line 1 "./src/resolv.c" -#endif -/* - * Copyright (c) 2014 Cesanta Software Limited - * All rights reserved - */ - -#ifndef MG_DISABLE_RESOLVER - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/resolv.h" */ - -#ifndef MG_DEFAULT_NAMESERVER -#define MG_DEFAULT_NAMESERVER "8.8.8.8" -#endif - -static const char *mg_default_dns_server = "udp://" MG_DEFAULT_NAMESERVER ":53"; - -MG_INTERNAL char mg_dns_server[256]; - -struct mg_resolve_async_request { - char name[1024]; - int query; - mg_resolve_callback_t callback; - void *data; - time_t timeout; - int max_retries; - enum mg_resolve_err err; - - /* state */ - time_t last_time; - int retries; -}; - -/* - * Find what nameserver to use. - * - * Return 0 if OK, -1 if error - */ -static int mg_get_ip_address_of_nameserver(char *name, size_t name_len) { - int ret = -1; - -#ifdef _WIN32 - int i; - LONG err; - HKEY hKey, hSub; - char subkey[512], value[128], - *key = "SYSTEM\\ControlSet001\\Services\\Tcpip\\Parameters\\Interfaces"; - - if ((err = RegOpenKeyA(HKEY_LOCAL_MACHINE, key, &hKey)) != ERROR_SUCCESS) { - fprintf(stderr, "cannot open reg key %s: %d\n", key, err); - ret = -1; - } else { - for (ret = -1, i = 0; - RegEnumKeyA(hKey, i, subkey, sizeof(subkey)) == ERROR_SUCCESS; i++) { - DWORD type, len = sizeof(value); - if (RegOpenKeyA(hKey, subkey, &hSub) == ERROR_SUCCESS && - (RegQueryValueExA(hSub, "NameServer", 0, &type, (void *) value, - &len) == ERROR_SUCCESS || - RegQueryValueExA(hSub, "DhcpNameServer", 0, &type, (void *) value, - &len) == ERROR_SUCCESS)) { - /* - * See https://github.com/cesanta/mongoose/issues/176 - * The value taken from the registry can be empty, a single - * IP address, or multiple IP addresses separated by comma. - * If it's empty, check the next interface. - * If it's multiple IP addresses, take the first one. - */ - char *comma = strchr(value, ','); - if (value[0] == '\0') { - continue; - } - if (comma != NULL) { - *comma = '\0'; - } - snprintf(name, name_len, "udp://%s:53", value); - ret = 0; - RegCloseKey(hSub); - break; - } - } - RegCloseKey(hKey); - } -#elif !defined(MG_DISABLE_FILESYSTEM) - FILE *fp; - char line[512]; - - if ((fp = fopen("/etc/resolv.conf", "r")) == NULL) { - ret = -1; - } else { - /* Try to figure out what nameserver to use */ - for (ret = -1; fgets(line, sizeof(line), fp) != NULL;) { - char buf[256]; - if (sscanf(line, "nameserver %255[^\n\t #]s", buf) == 1) { - snprintf(name, name_len, "udp://%s:53", buf); - ret = 0; - break; - } - } - (void) fclose(fp); - } -#else - snprintf(name, name_len, "%s", mg_default_dns_server); -#endif /* _WIN32 */ - - return ret; -} - -int mg_resolve_from_hosts_file(const char *name, union socket_address *usa) { -#ifndef MG_DISABLE_FILESYSTEM - /* TODO(mkm) cache /etc/hosts */ - FILE *fp; - char line[1024]; - char *p; - char alias[256]; - unsigned int a, b, c, d; - int len = 0; - - if ((fp = fopen("/etc/hosts", "r")) == NULL) { - return -1; - } - - for (; fgets(line, sizeof(line), fp) != NULL;) { - if (line[0] == '#') continue; - - if (sscanf(line, "%u.%u.%u.%u%n", &a, &b, &c, &d, &len) == 0) { - /* TODO(mkm): handle ipv6 */ - continue; - } - for (p = line + len; sscanf(p, "%s%n", alias, &len) == 1; p += len) { - if (strcmp(alias, name) == 0) { - usa->sin.sin_addr.s_addr = htonl(a << 24 | b << 16 | c << 8 | d); - fclose(fp); - return 0; - } - } - } - - fclose(fp); -#endif - - return -1; -} - -static void mg_resolve_async_eh(struct mg_connection *nc, int ev, void *data) { - time_t now = time(NULL); - struct mg_resolve_async_request *req; - struct mg_dns_message *msg; - - DBG(("ev=%d user_data=%p", ev, nc->user_data)); - - req = (struct mg_resolve_async_request *) nc->user_data; - - if (req == NULL) { - return; - } - - switch (ev) { - case MG_EV_CONNECT: - case MG_EV_POLL: - if (req->retries > req->max_retries) { - req->err = MG_RESOLVE_EXCEEDED_RETRY_COUNT; - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - break; - } - if (now - req->last_time >= req->timeout) { - mg_send_dns_query(nc, req->name, req->query); - req->last_time = now; - req->retries++; - } - break; - case MG_EV_RECV: - msg = (struct mg_dns_message *) MG_MALLOC(sizeof(*msg)); - if (mg_parse_dns(nc->recv_mbuf.buf, *(int *) data, msg) == 0 && - msg->num_answers > 0) { - req->callback(msg, req->data, MG_RESOLVE_OK); - nc->user_data = NULL; - MG_FREE(req); - } else { - req->err = MG_RESOLVE_NO_ANSWERS; - } - MG_FREE(msg); - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - break; - case MG_EV_SEND: - /* - * If a send error occurs, prevent closing of the connection by the core. - * We will retry after timeout. - */ - nc->flags &= ~MG_F_CLOSE_IMMEDIATELY; - mbuf_remove(&nc->send_mbuf, nc->send_mbuf.len); - break; - case MG_EV_TIMER: - req->err = MG_RESOLVE_TIMEOUT; - nc->flags |= MG_F_CLOSE_IMMEDIATELY; - break; - case MG_EV_CLOSE: - /* If we got here with request still not done, fire an error callback. */ - if (req != NULL) { - req->callback(NULL, req->data, req->err); - nc->user_data = NULL; - MG_FREE(req); - } - break; - } -} - -int mg_resolve_async(struct mg_mgr *mgr, const char *name, int query, - mg_resolve_callback_t cb, void *data) { - struct mg_resolve_async_opts opts; - memset(&opts, 0, sizeof(opts)); - return mg_resolve_async_opt(mgr, name, query, cb, data, opts); -} - -int mg_resolve_async_opt(struct mg_mgr *mgr, const char *name, int query, - mg_resolve_callback_t cb, void *data, - struct mg_resolve_async_opts opts) { - struct mg_resolve_async_request *req; - struct mg_connection *dns_nc; - const char *nameserver = opts.nameserver_url; - - DBG(("%s %d %p", name, query, opts.dns_conn)); - - /* resolve with DNS */ - req = (struct mg_resolve_async_request *) MG_CALLOC(1, sizeof(*req)); - if (req == NULL) { - return -1; - } - - strncpy(req->name, name, sizeof(req->name)); - req->query = query; - req->callback = cb; - req->data = data; - /* TODO(mkm): parse defaults out of resolve.conf */ - req->max_retries = opts.max_retries ? opts.max_retries : 2; - req->timeout = opts.timeout ? opts.timeout : 5; - - /* Lazily initialize dns server */ - if (nameserver == NULL && mg_dns_server[0] == '\0' && - mg_get_ip_address_of_nameserver(mg_dns_server, sizeof(mg_dns_server)) == - -1) { - strncpy(mg_dns_server, mg_default_dns_server, sizeof(mg_dns_server)); - } - - if (nameserver == NULL) { - nameserver = mg_dns_server; - } - - dns_nc = mg_connect(mgr, nameserver, mg_resolve_async_eh); - if (dns_nc == NULL) { - free(req); - return -1; - } - dns_nc->user_data = req; - if (opts.dns_conn != NULL) { - *opts.dns_conn = dns_nc; - } - - return 0; -} - -#endif /* MG_DISABLE_RESOLVE */ -#ifdef MG_MODULE_LINES -#line 1 "./src/coap.c" -#endif -/* - * Copyright (c) 2015 Cesanta Software Limited - * All rights reserved - * This software is dual-licensed: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. For the terms of this - * license, see . - * - * You are free to use this software under the terms of the GNU General - * Public License, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * See the GNU General Public License for more details. - * - * Alternatively, you can license this software under a commercial - * license, as set out in . - */ - -/* Amalgamated: #include "mongoose/src/internal.h" */ -/* Amalgamated: #include "mongoose/src/coap.h" */ - -#ifdef MG_ENABLE_COAP - -void mg_coap_free_options(struct mg_coap_message *cm) { - while (cm->options != NULL) { - struct mg_coap_option *next = cm->options->next; - MG_FREE(cm->options); - cm->options = next; - } -} - -struct mg_coap_option *mg_coap_add_option(struct mg_coap_message *cm, - uint32_t number, char *value, - size_t len) { - struct mg_coap_option *new_option = - (struct mg_coap_option *) MG_CALLOC(1, sizeof(*new_option)); - - new_option->number = number; - new_option->value.p = value; - new_option->value.len = len; - - if (cm->options == NULL) { - cm->options = cm->optiomg_tail = new_option; - } else { - /* - * A very simple attention to help clients to compose options: - * CoAP wants to see options ASC ordered. - * Could be change by using sort in coap_compose - */ - if (cm->optiomg_tail->number <= new_option->number) { - /* if option is already ordered just add it */ - cm->optiomg_tail = cm->optiomg_tail->next = new_option; - } else { - /* looking for appropriate position */ - struct mg_coap_option *current_opt = cm->options; - struct mg_coap_option *prev_opt = 0; - - while (current_opt != NULL) { - if (current_opt->number > new_option->number) { - break; - } - prev_opt = current_opt; - current_opt = current_opt->next; - } - - if (prev_opt != NULL) { - prev_opt->next = new_option; - new_option->next = current_opt; - } else { - /* insert new_option to the beginning */ - new_option->next = cm->options; - cm->options = new_option; - } - } - } - - return new_option; -} - -/* - * Fills CoAP header in mg_coap_message. - * - * Helper function. - */ -static char *coap_parse_header(char *ptr, struct mbuf *io, - struct mg_coap_message *cm) { - if (io->len < sizeof(uint32_t)) { - cm->flags |= MG_COAP_NOT_ENOUGH_DATA; - return NULL; - } - - /* - * Version (Ver): 2-bit unsigned integer. Indicates the CoAP version - * number. Implementations of this specification MUST set this field - * to 1 (01 binary). Other values are reserved for future versions. - * Messages with unknown version numbers MUST be silently ignored. - */ - if (((uint8_t) *ptr >> 6) != 1) { - cm->flags |= MG_COAP_IGNORE; - return NULL; - } - - /* - * Type (T): 2-bit unsigned integer. Indicates if this message is of - * type Confirmable (0), Non-confirmable (1), Acknowledgement (2), or - * Reset (3). - */ - cm->msg_type = ((uint8_t) *ptr & 0x30) >> 4; - cm->flags |= MG_COAP_MSG_TYPE_FIELD; - - /* - * Token Length (TKL): 4-bit unsigned integer. Indicates the length of - * the variable-length Token field (0-8 bytes). Lengths 9-15 are - * reserved, MUST NOT be sent, and MUST be processed as a message - * format error. - */ - cm->token.len = *ptr & 0x0F; - if (cm->token.len > 8) { - cm->flags |= MG_COAP_FORMAT_ERROR; - return NULL; - } - - ptr++; - - /* - * Code: 8-bit unsigned integer, split into a 3-bit class (most - * significant bits) and a 5-bit detail (least significant bits) - */ - cm->code_class = (uint8_t) *ptr >> 5; - cm->code_detail = *ptr & 0x1F; - cm->flags |= (MG_COAP_CODE_CLASS_FIELD | MG_COAP_CODE_DETAIL_FIELD); - - ptr++; - - /* Message ID: 16-bit unsigned integer in network byte order. */ - cm->msg_id = (uint8_t) *ptr << 8 | (uint8_t) * (ptr + 1); - cm->flags |= MG_COAP_MSG_ID_FIELD; - - ptr += 2; - - return ptr; -} - -/* - * Fills token information in mg_coap_message. - * - * Helper function. - */ -static char *coap_get_token(char *ptr, struct mbuf *io, - struct mg_coap_message *cm) { - if (cm->token.len != 0) { - if (ptr + cm->token.len > io->buf + io->len) { - cm->flags |= MG_COAP_NOT_ENOUGH_DATA; - return NULL; - } else { - cm->token.p = ptr; - ptr += cm->token.len; - cm->flags |= MG_COAP_TOKEN_FIELD; - } - } - - return ptr; -} - -/* - * Returns Option Delta or Length. - * - * Helper function. - */ -static int coap_get_ext_opt(char *ptr, struct mbuf *io, uint16_t *opt_info) { - int ret = 0; - - if (*opt_info == 13) { - /* - * 13: An 8-bit unsigned integer follows the initial byte and - * indicates the Option Delta/Length minus 13. - */ - if (ptr < io->buf + io->len) { - *opt_info = (uint8_t) *ptr + 13; - ret = sizeof(uint8_t); - } else { - ret = -1; /* LCOV_EXCL_LINE */ - } - } else if (*opt_info == 14) { - /* - * 14: A 16-bit unsigned integer in network byte order follows the - * initial byte and indicates the Option Delta/Length minus 269. - */ - if (ptr + sizeof(uint8_t) < io->buf + io->len) { - *opt_info = ((uint8_t) *ptr << 8 | (uint8_t) * (ptr + 1)) + 269; - ret = sizeof(uint16_t); - } else { - ret = -1; /* LCOV_EXCL_LINE */ - } - } - - return ret; -} - -/* - * Fills options in mg_coap_message. - * - * Helper function. - * - * General options format: - * +---------------+---------------+ - * | Option Delta | Option Length | 1 byte - * +---------------+---------------+ - * \ Option Delta (extended) \ 0-2 bytes - * +-------------------------------+ - * / Option Length (extended) \ 0-2 bytes - * +-------------------------------+ - * \ Option Value \ 0 or more bytes - * +-------------------------------+ - */ -static char *coap_get_options(char *ptr, struct mbuf *io, - struct mg_coap_message *cm) { - uint16_t prev_opt = 0; - - if (ptr == io->buf + io->len) { - /* end of packet, ok */ - return NULL; - } - - /* 0xFF is payload marker */ - while (ptr < io->buf + io->len && (uint8_t) *ptr != 0xFF) { - uint16_t option_delta, option_lenght; - int optinfo_len; - - /* Option Delta: 4-bit unsigned integer */ - option_delta = ((uint8_t) *ptr & 0xF0) >> 4; - /* Option Length: 4-bit unsigned integer */ - option_lenght = *ptr & 0x0F; - - if (option_delta == 15 || option_lenght == 15) { - /* - * 15: Reserved for future use. If the field is set to this value, - * it MUST be processed as a message format error - */ - cm->flags |= MG_COAP_FORMAT_ERROR; - break; - } - - ptr++; - - /* check for extended option delta */ - optinfo_len = coap_get_ext_opt(ptr, io, &option_delta); - if (optinfo_len == -1) { - cm->flags |= MG_COAP_NOT_ENOUGH_DATA; /* LCOV_EXCL_LINE */ - break; /* LCOV_EXCL_LINE */ - } - - ptr += optinfo_len; - - /* check or extended option lenght */ - optinfo_len = coap_get_ext_opt(ptr, io, &option_lenght); - if (optinfo_len == -1) { - cm->flags |= MG_COAP_NOT_ENOUGH_DATA; /* LCOV_EXCL_LINE */ - break; /* LCOV_EXCL_LINE */ - } - - ptr += optinfo_len; - - /* - * Instead of specifying the Option Number directly, the instances MUST - * appear in order of their Option Numbers and a delta encoding is used - * between them. - */ - option_delta += prev_opt; - - mg_coap_add_option(cm, option_delta, ptr, option_lenght); - - prev_opt = option_delta; - - if (ptr + option_lenght > io->buf + io->len) { - cm->flags |= MG_COAP_NOT_ENOUGH_DATA; /* LCOV_EXCL_LINE */ - break; /* LCOV_EXCL_LINE */ - } - - ptr += option_lenght; - } - - if ((cm->flags & MG_COAP_ERROR) != 0) { - mg_coap_free_options(cm); - return NULL; - } - - cm->flags |= MG_COAP_OPTIOMG_FIELD; - - if (ptr == io->buf + io->len) { - /* end of packet, ok */ - return NULL; - } - - ptr++; - - return ptr; -} - -uint32_t mg_coap_parse(struct mbuf *io, struct mg_coap_message *cm) { - char *ptr; - - memset(cm, 0, sizeof(*cm)); - - if ((ptr = coap_parse_header(io->buf, io, cm)) == NULL) { - return cm->flags; - } - - if ((ptr = coap_get_token(ptr, io, cm)) == NULL) { - return cm->flags; - } - - if ((ptr = coap_get_options(ptr, io, cm)) == NULL) { - return cm->flags; - } - - /* the rest is payload */ - cm->payload.len = io->len - (ptr - io->buf); - if (cm->payload.len != 0) { - cm->payload.p = ptr; - cm->flags |= MG_COAP_PAYLOAD_FIELD; - } - - return cm->flags; -} - -/* - * Calculates extended size of given Opt Number/Length in coap message. - * - * Helper function. - */ -static size_t coap_get_ext_opt_size(uint32_t value) { - int ret = 0; - - if (value >= 13 && value <= 0xFF + 13) { - ret = sizeof(uint8_t); - } else if (value > 0xFF + 13 && value <= 0xFFFF + 269) { - ret = sizeof(uint16_t); - } - - return ret; -} - -/* - * Splits given Opt Number/Length into base and ext values. - * - * Helper function. - */ -static int coap_split_opt(uint32_t value, uint8_t *base, uint16_t *ext) { - int ret = 0; - - if (value < 13) { - *base = value; - } else if (value >= 13 && value <= 0xFF + 13) { - *base = 13; - *ext = value - 13; - ret = sizeof(uint8_t); - } else if (value > 0xFF + 13 && value <= 0xFFFF + 269) { - *base = 14; - *ext = value - 269; - ret = sizeof(uint16_t); - } - - return ret; -} - -/* - * Puts uint16_t (in network order) into given char stream. - * - * Helper function. - */ -static char *coap_add_uint16(char *ptr, uint16_t val) { - *ptr = val >> 8; - ptr++; - *ptr = val & 0x00FF; - ptr++; - return ptr; -} - -/* - * Puts extended value of Opt Number/Length into given char stream. - * - * Helper function. - */ -static char *coap_add_opt_info(char *ptr, uint16_t val, size_t len) { - if (len == sizeof(uint8_t)) { - *ptr = val; - ptr++; - } else if (len == sizeof(uint16_t)) { - ptr = coap_add_uint16(ptr, val); - } - - return ptr; -} - -/* - * Verifies given mg_coap_message and calculates message size for it. - * - * Helper function. - */ -static uint32_t coap_calculate_packet_size(struct mg_coap_message *cm, - size_t *len) { - struct mg_coap_option *opt; - uint32_t prev_opt_number; - - *len = 4; /* header */ - if (cm->msg_type > MG_COAP_MSG_MAX) { - return MG_COAP_ERROR | MG_COAP_MSG_TYPE_FIELD; - } - if (cm->token.len > 8) { - return MG_COAP_ERROR | MG_COAP_TOKEN_FIELD; - } - if (cm->code_class > 7) { - return MG_COAP_ERROR | MG_COAP_CODE_CLASS_FIELD; - } - if (cm->code_detail > 31) { - return MG_COAP_ERROR | MG_COAP_CODE_DETAIL_FIELD; - } - - *len += cm->token.len; - if (cm->payload.len != 0) { - *len += cm->payload.len + 1; /* ... + 1; add payload marker */ - } - - opt = cm->options; - prev_opt_number = 0; - while (opt != NULL) { - *len += 1; /* basic delta/length */ - *len += coap_get_ext_opt_size(opt->number); - *len += coap_get_ext_opt_size((uint32_t) opt->value.len); - /* - * Current implementation performs check if - * option_number > previous option_number and produces an error - * TODO(alashkin): write design doc with limitations - * May be resorting is more suitable solution. - */ - if ((opt->next != NULL && opt->number > opt->next->number) || - opt->value.len > 0xFFFF + 269 || - opt->number - prev_opt_number > 0xFFFF + 269) { - return MG_COAP_ERROR | MG_COAP_OPTIOMG_FIELD; - } - *len += opt->value.len; - opt = opt->next; - } - - return 0; -} - -uint32_t mg_coap_compose(struct mg_coap_message *cm, struct mbuf *io) { - struct mg_coap_option *opt; - uint32_t res, prev_opt_number; - size_t prev_io_len, packet_size; - char *ptr; - - res = coap_calculate_packet_size(cm, &packet_size); - if (res != 0) { - return res; - } - - /* saving previous lenght to handle non-empty mbuf */ - prev_io_len = io->len; - mbuf_append(io, NULL, packet_size); - ptr = io->buf + prev_io_len; - - /* - * since cm is verified, it is possible to use bits shift operator - * without additional zeroing of unused bits - */ - - /* ver: 2 bits, msg_type: 2 bits, toklen: 4 bits */ - *ptr = (1 << 6) | (cm->msg_type << 4) | (cm->token.len); - ptr++; - - /* code class: 3 bits, code detail: 5 bits */ - *ptr = (cm->code_class << 5) | (cm->code_detail); - ptr++; - - ptr = coap_add_uint16(ptr, cm->msg_id); - - if (cm->token.len != 0) { - memcpy(ptr, cm->token.p, cm->token.len); - ptr += cm->token.len; - } - - opt = cm->options; - prev_opt_number = 0; - while (opt != NULL) { - uint8_t delta_base = 0, length_base = 0; - uint16_t delta_ext, length_ext; - - size_t opt_delta_len = - coap_split_opt(opt->number - prev_opt_number, &delta_base, &delta_ext); - size_t opt_lenght_len = - coap_split_opt((uint32_t) opt->value.len, &length_base, &length_ext); - - *ptr = (delta_base << 4) | length_base; - ptr++; - - ptr = coap_add_opt_info(ptr, delta_ext, opt_delta_len); - ptr = coap_add_opt_info(ptr, length_ext, opt_lenght_len); - - if (opt->value.len != 0) { - memcpy(ptr, opt->value.p, opt->value.len); - ptr += opt->value.len; - } - - prev_opt_number = opt->number; - opt = opt->next; - } - - if (cm->payload.len != 0) { - *ptr = -1; - ptr++; - memcpy(ptr, cm->payload.p, cm->payload.len); - } - - return 0; -} - -uint32_t mg_coap_send_message(struct mg_connection *nc, - struct mg_coap_message *cm) { - struct mbuf packet_out; - uint32_t compose_res; - - mbuf_init(&packet_out, 0); - compose_res = mg_coap_compose(cm, &packet_out); - if (compose_res != 0) { - return compose_res; /* LCOV_EXCL_LINE */ - } - - mg_send(nc, packet_out.buf, (int) packet_out.len); - mbuf_free(&packet_out); - - return 0; -} - -uint32_t mg_coap_send_ack(struct mg_connection *nc, uint16_t msg_id) { - struct mg_coap_message cm; - memset(&cm, 0, sizeof(cm)); - cm.msg_type = MG_COAP_MSG_ACK; - cm.msg_id = msg_id; - - return mg_coap_send_message(nc, &cm); -} - -static void coap_handler(struct mg_connection *nc, int ev, void *ev_data) { - struct mbuf *io = &nc->recv_mbuf; - struct mg_coap_message cm; - uint32_t parse_res; - - memset(&cm, 0, sizeof(cm)); - - nc->handler(nc, ev, ev_data); - - switch (ev) { - case MG_EV_RECV: - parse_res = mg_coap_parse(io, &cm); - if ((parse_res & MG_COAP_IGNORE) == 0) { - if ((cm.flags & MG_COAP_NOT_ENOUGH_DATA) != 0) { - /* - * Since we support UDP only - * MG_COAP_NOT_ENOUGH_DATA == MG_COAP_FORMAT_ERROR - */ - cm.flags |= MG_COAP_FORMAT_ERROR; /* LCOV_EXCL_LINE */ - } /* LCOV_EXCL_LINE */ - nc->handler(nc, MG_COAP_EVENT_BASE + cm.msg_type, &cm); - } - - mg_coap_free_options(&cm); - mbuf_remove(io, io->len); - break; - } -} -/* - * Attach built-in CoAP event handler to the given connection. - * - * The user-defined event handler will receive following extra events: - * - * - MG_EV_COAP_CON - * - MG_EV_COAP_NOC - * - MG_EV_COAP_ACK - * - MG_EV_COAP_RST - */ -int mg_set_protocol_coap(struct mg_connection *nc) { - /* supports UDP only */ - if ((nc->flags & MG_F_UDP) == 0) { - return -1; - } - - nc->proto_handler = coap_handler; - - return 0; -} - -#endif /* MG_DISABLE_COAP */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/cc3200/cc3200_libc.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#if CS_PLATFORM == CS_P_CC3200 - -#include -#include - -#ifndef __TI_COMPILER_VERSION__ -#include -#include -#include -#include -#endif - -#include -#include -#include -#include -#include -#include -#include - -#define CONSOLE_UART UARTA0_BASE - -#ifdef __TI_COMPILER_VERSION__ -int asprintf(char **strp, const char *fmt, ...) { - va_list ap; - int len; - - *strp = malloc(BUFSIZ); - if (*strp == NULL) return -1; - - va_start(ap, fmt); - len = vsnprintf(*strp, BUFSIZ, fmt, ap); - va_end(ap); - - if (len > 0) { - *strp = realloc(*strp, len); - if (*strp == NULL) return -1; - } - - if (len >= BUFSIZ) { - va_start(ap, fmt); - len = vsnprintf(*strp, len, fmt, ap); - va_end(ap); - } - - return len; -} -#endif /* __TI_COMPILER_VERSION__ */ - -#ifndef __TI_COMPILER_VERSION__ -int _gettimeofday_r(struct _reent *r, struct timeval *tp, void *tzp) { -#else -int gettimeofday(struct timeval *tp, void *tzp) { -#endif - unsigned long long r1 = 0, r2; - /* Achieve two consecutive reads of the same value. */ - do { - r2 = r1; - r1 = PRCMSlowClkCtrFastGet(); - } while (r1 != r2); - /* This is a 32768 Hz counter. */ - tp->tv_sec = (r1 >> 15); - /* 1/32768-th of a second is 30.517578125 microseconds, approx. 31, - * but we round down so it doesn't overflow at 32767 */ - tp->tv_usec = (r1 & 0x7FFF) * 30; - return 0; -} - -long int random(void) { - return 42; /* FIXME */ -} - -void fprint_str(FILE *fp, const char *str) { - while (*str != '\0') { - if (*str == '\n') MAP_UARTCharPut(CONSOLE_UART, '\r'); - MAP_UARTCharPut(CONSOLE_UART, *str++); - } -} - -void _exit(int status) { - fprint_str(stderr, "_exit\n"); - /* cause an unaligned access exception, that will drop you into gdb */ - *(int *) 1 = status; - while (1) - ; /* avoid gcc warning because stdlib abort() has noreturn attribute */ -} - -void _not_implemented(const char *what) { - fprint_str(stderr, what); - fprint_str(stderr, " is not implemented\n"); - _exit(42); -} - -int _kill(int pid, int sig) { - (void) pid; - (void) sig; - _not_implemented("_kill"); - return -1; -} - -int _getpid() { - fprint_str(stderr, "_getpid is not implemented\n"); - return 42; -} - -int _isatty(int fd) { - /* 0, 1 and 2 are TTYs. */ - return fd < 2; -} - -#endif /* CS_PLATFORM == CS_P_CC3200 */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/msp432/msp432_libc.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#if CS_PLATFORM == CS_P_MSP432 - -#include -#include - -int gettimeofday(struct timeval *tp, void *tzp) { - uint32_t ticks = Clock_getTicks(); - tp->tv_sec = ticks / 1000; - tp->tv_usec = (ticks % 1000) * 1000; - return 0; -} - -long int random(void) { - return 42; /* FIXME */ -} - -#endif /* CS_PLATFORM == CS_P_MSP432 */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/simplelink/sl_fs_slfs.h" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#ifndef CS_COMMON_PLATFORMS_SIMPLELINK_SL_FS_SLFS_H_ -#define CS_COMMON_PLATFORMS_SIMPLELINK_SL_FS_SLFS_H_ - -#if defined(MG_FS_SLFS) - -#include -#ifndef __TI_COMPILER_VERSION__ -#include -#include -#endif - -#define MAX_OPEN_SLFS_FILES 8 - -/* Indirect libc interface - same functions, different names. */ -int fs_slfs_open(const char *pathname, int flags, mode_t mode); -int fs_slfs_close(int fd); -ssize_t fs_slfs_read(int fd, void *buf, size_t count); -ssize_t fs_slfs_write(int fd, const void *buf, size_t count); -int fs_slfs_stat(const char *pathname, struct stat *s); -int fs_slfs_fstat(int fd, struct stat *s); -off_t fs_slfs_lseek(int fd, off_t offset, int whence); -int fs_slfs_unlink(const char *filename); -int fs_slfs_rename(const char *from, const char *to); - -void fs_slfs_set_new_file_size(const char *name, size_t size); - -#endif /* defined(MG_FS_SLFS) */ - -#endif /* CS_COMMON_PLATFORMS_SIMPLELINK_SL_FS_SLFS_H_ */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/simplelink/sl_fs_slfs.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -/* Standard libc interface to TI SimpleLink FS. */ - -#if defined(MG_FS_SLFS) || defined(CC3200_FS_SLFS) - -/* Amalgamated: #include "common/platforms/simplelink/sl_fs_slfs.h" */ - -#include - -#if CS_PLATFORM == CS_P_CC3200 -#include -#endif -#include -#include - -/* Amalgamated: #include "common/cs_dbg.h" */ - -extern int set_errno(int e); /* From sl_fs.c */ - -/* - * With SLFS, you have to pre-declare max file size. Yes. Really. - * 64K should be enough for everyone. Right? - */ -#ifndef FS_SLFS_MAX_FILE_SIZE -#define FS_SLFS_MAX_FILE_SIZE (64 * 1024) -#endif - -struct sl_file_size_hint { - char *name; - size_t size; -}; - -struct sl_fd_info { - _i32 fh; - _off_t pos; - size_t size; -}; - -static struct sl_fd_info s_sl_fds[MAX_OPEN_SLFS_FILES]; -static struct sl_file_size_hint s_sl_file_size_hints[MAX_OPEN_SLFS_FILES]; - -static int sl_fs_to_errno(_i32 r) { - DBG(("SL error: %d", (int) r)); - switch (r) { - case SL_FS_OK: - return 0; - case SL_FS_FILE_NAME_EXIST: - return EEXIST; - case SL_FS_WRONG_FILE_NAME: - return EINVAL; - case SL_FS_ERR_NO_AVAILABLE_NV_INDEX: - case SL_FS_ERR_NO_AVAILABLE_BLOCKS: - return ENOSPC; - case SL_FS_ERR_FAILED_TO_ALLOCATE_MEM: - return ENOMEM; - case SL_FS_ERR_FILE_NOT_EXISTS: - return ENOENT; - case SL_FS_ERR_NOT_SUPPORTED: - return ENOTSUP; - } - return ENXIO; -} - -int fs_slfs_open(const char *pathname, int flags, mode_t mode) { - int fd; - for (fd = 0; fd < MAX_OPEN_SLFS_FILES; fd++) { - if (s_sl_fds[fd].fh <= 0) break; - } - if (fd >= MAX_OPEN_SLFS_FILES) return set_errno(ENOMEM); - struct sl_fd_info *fi = &s_sl_fds[fd]; - - _u32 am = 0; - fi->size = (size_t) -1; - if (pathname[0] == '/') pathname++; - int rw = (flags & 3); - if (rw == O_RDONLY) { - SlFsFileInfo_t sl_fi; - _i32 r = sl_FsGetInfo((const _u8 *) pathname, 0, &sl_fi); - if (r == SL_FS_OK) { - fi->size = sl_fi.FileLen; - } - am = FS_MODE_OPEN_READ; - } else { - if (!(flags & O_TRUNC) || (flags & O_APPEND)) { - // FailFS files cannot be opened for append and will be truncated - // when opened for write. - return set_errno(ENOTSUP); - } - if (flags & O_CREAT) { - size_t i, size = FS_SLFS_MAX_FILE_SIZE; - for (i = 0; i < MAX_OPEN_SLFS_FILES; i++) { - if (s_sl_file_size_hints[i].name != NULL && - strcmp(s_sl_file_size_hints[i].name, pathname) == 0) { - size = s_sl_file_size_hints[i].size; - free(s_sl_file_size_hints[i].name); - s_sl_file_size_hints[i].name = NULL; - break; - } - } - DBG(("creating %s with max size %d", pathname, (int) size)); - am = FS_MODE_OPEN_CREATE(size, 0); - } else { - am = FS_MODE_OPEN_WRITE; - } - } - _i32 r = sl_FsOpen((_u8 *) pathname, am, NULL, &fi->fh); - DBG(("sl_FsOpen(%s, 0x%x) = %d, %d", pathname, (int) am, (int) r, - (int) fi->fh)); - if (r == SL_FS_OK) { - fi->pos = 0; - r = fd; - } else { - fi->fh = -1; - r = set_errno(sl_fs_to_errno(r)); - } - return r; -} - -int fs_slfs_close(int fd) { - struct sl_fd_info *fi = &s_sl_fds[fd]; - if (fi->fh <= 0) return set_errno(EBADF); - _i32 r = sl_FsClose(fi->fh, NULL, NULL, 0); - DBG(("sl_FsClose(%d) = %d", (int) fi->fh, (int) r)); - s_sl_fds[fd].fh = -1; - return set_errno(sl_fs_to_errno(r)); -} - -ssize_t fs_slfs_read(int fd, void *buf, size_t count) { - struct sl_fd_info *fi = &s_sl_fds[fd]; - if (fi->fh <= 0) return set_errno(EBADF); - /* Simulate EOF. sl_FsRead @ file_size return SL_FS_ERR_OFFSET_OUT_OF_RANGE. - */ - if (fi->pos == fi->size) return 0; - _i32 r = sl_FsRead(fi->fh, fi->pos, buf, count); - DBG(("sl_FsRead(%d, %d, %d) = %d", (int) fi->fh, (int) fi->pos, (int) count, - (int) r)); - if (r >= 0) { - fi->pos += r; - return r; - } - return set_errno(sl_fs_to_errno(r)); -} - -ssize_t fs_slfs_write(int fd, const void *buf, size_t count) { - struct sl_fd_info *fi = &s_sl_fds[fd]; - if (fi->fh <= 0) return set_errno(EBADF); - _i32 r = sl_FsWrite(fi->fh, fi->pos, (_u8 *) buf, count); - DBG(("sl_FsWrite(%d, %d, %d) = %d", (int) fi->fh, (int) fi->pos, (int) count, - (int) r)); - if (r >= 0) { - fi->pos += r; - return r; - } - return set_errno(sl_fs_to_errno(r)); -} - -int fs_slfs_stat(const char *pathname, struct stat *s) { - SlFsFileInfo_t sl_fi; - _i32 r = sl_FsGetInfo((const _u8 *) pathname, 0, &sl_fi); - if (r == SL_FS_OK) { - s->st_mode = S_IFREG | 0666; - s->st_nlink = 1; - s->st_size = sl_fi.FileLen; - return 0; - } - return set_errno(sl_fs_to_errno(r)); -} - -int fs_slfs_fstat(int fd, struct stat *s) { - struct sl_fd_info *fi = &s_sl_fds[fd]; - if (fi->fh <= 0) return set_errno(EBADF); - s->st_mode = 0666; - s->st_mode = S_IFREG | 0666; - s->st_nlink = 1; - s->st_size = fi->size; - return 0; -} - -off_t fs_slfs_lseek(int fd, off_t offset, int whence) { - if (s_sl_fds[fd].fh <= 0) return set_errno(EBADF); - switch (whence) { - case SEEK_SET: - s_sl_fds[fd].pos = offset; - break; - case SEEK_CUR: - s_sl_fds[fd].pos += offset; - break; - case SEEK_END: - return set_errno(ENOTSUP); - } - return 0; -} - -int fs_slfs_unlink(const char *filename) { - return set_errno(sl_fs_to_errno(sl_FsDel((const _u8 *) filename, 0))); -} - -int fs_slfs_rename(const char *from, const char *to) { - return set_errno(ENOTSUP); -} - -void fs_slfs_set_new_file_size(const char *name, size_t size) { - int i; - for (i = 0; i < MAX_OPEN_SLFS_FILES; i++) { - if (s_sl_file_size_hints[i].name == NULL) { - DBG(("File size hint: %s %d", name, (int) size)); - s_sl_file_size_hints[i].name = strdup(name); - s_sl_file_size_hints[i].size = size; - break; - } - } -} - -#endif /* defined(MG_FS_SLFS) || defined(CC3200_FS_SLFS) */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/simplelink/sl_fs.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#if defined(MG_SOCKET_SIMPLELINK) && \ - (defined(MG_FS_SLFS) || defined(MG_FS_SPIFFS)) - -#include -#include -#include -#include -#ifdef __TI_COMPILER_VERSION__ -#include -#endif - -#if CS_PLATFORM == CS_P_CC3200 -#include -#include -#include -#include -#include -#endif - -/* Amalgamated: #include "common/cs_dbg.h" */ -/* Amalgamated: #include "common/platform.h" */ - -#ifdef CC3200_FS_SPIFFS -/* Amalgamated: #include "cc3200_fs_spiffs.h" */ -#endif - -#ifdef MG_FS_SLFS -/* Amalgamated: #include "sl_fs_slfs.h" */ -#endif - -#define NUM_SYS_FDS 3 -#define SPIFFS_FD_BASE 10 -#define SLFS_FD_BASE 100 - -#define CONSOLE_UART UARTA0_BASE - -int set_errno(int e) { - errno = e; - return -e; -} - -static int is_sl_fname(const char *fname) { - return strncmp(fname, "SL:", 3) == 0; -} - -static const char *sl_fname(const char *fname) { - return fname + 3; -} - -static const char *drop_dir(const char *fname) { - if (*fname == '.') fname++; - if (*fname == '/') fname++; - return fname; -} - -enum fd_type { - FD_INVALID, - FD_SYS, -#ifdef CC3200_FS_SPIFFS - FD_SPIFFS, -#endif -#ifdef MG_FS_SLFS - FD_SLFS -#endif -}; -static int fd_type(int fd) { - if (fd >= 0 && fd < NUM_SYS_FDS) return FD_SYS; -#ifdef CC3200_FS_SPIFFS - if (fd >= SPIFFS_FD_BASE && fd < SPIFFS_FD_BASE + MAX_OPEN_SPIFFS_FILES) { - return FD_SPIFFS; - } -#endif -#ifdef MG_FS_SLFS - if (fd >= SLFS_FD_BASE && fd < SLFS_FD_BASE + MAX_OPEN_SLFS_FILES) { - return FD_SLFS; - } -#endif - return FD_INVALID; -} - -int _open(const char *pathname, int flags, mode_t mode) { - int fd = -1; - pathname = drop_dir(pathname); - if (is_sl_fname(pathname)) { -#ifdef MG_FS_SLFS - fd = fs_slfs_open(sl_fname(pathname), flags, mode); - if (fd >= 0) fd += SLFS_FD_BASE; -#endif - } else { -#ifdef CC3200_FS_SPIFFS - fd = fs_spiffs_open(pathname, flags, mode); - if (fd >= 0) fd += SPIFFS_FD_BASE; -#endif - } - DBG(("open(%s, 0x%x) = %d", pathname, flags, fd)); - return fd; -} - -int _stat(const char *pathname, struct stat *st) { - int res = -1; - const char *fname = pathname; - int is_sl = is_sl_fname(pathname); - if (is_sl) fname = sl_fname(pathname); - fname = drop_dir(fname); - memset(st, 0, sizeof(*st)); - /* Simulate statting the root directory. */ - if (strcmp(fname, "") == 0) { - st->st_ino = 0; - st->st_mode = S_IFDIR | 0777; - st->st_nlink = 1; - st->st_size = 0; - return 0; - } - if (is_sl) { -#ifdef MG_FS_SLFS - res = fs_slfs_stat(fname, st); -#endif - } else { -#ifdef CC3200_FS_SPIFFS - res = fs_spiffs_stat(fname, st); -#endif - } - DBG(("stat(%s) = %d; fname = %s", pathname, res, fname)); - return res; -} - -int _close(int fd) { - int r = -1; - switch (fd_type(fd)) { - case FD_INVALID: - r = set_errno(EBADF); - break; - case FD_SYS: - r = set_errno(EACCES); - break; -#ifdef CC3200_FS_SPIFFS - case FD_SPIFFS: - r = fs_spiffs_close(fd - SPIFFS_FD_BASE); - break; -#endif -#ifdef MG_FS_SLFS - case FD_SLFS: - r = fs_slfs_close(fd - SLFS_FD_BASE); - break; -#endif - } - DBG(("close(%d) = %d", fd, r)); - return r; -} - -off_t _lseek(int fd, off_t offset, int whence) { - int r = -1; - switch (fd_type(fd)) { - case FD_INVALID: - r = set_errno(EBADF); - break; - case FD_SYS: - r = set_errno(ESPIPE); - break; -#ifdef CC3200_FS_SPIFFS - case FD_SPIFFS: - r = fs_spiffs_lseek(fd - SPIFFS_FD_BASE, offset, whence); - break; -#endif -#ifdef MG_FS_SLFS - case FD_SLFS: - r = fs_slfs_lseek(fd - SLFS_FD_BASE, offset, whence); - break; -#endif - } - DBG(("lseek(%d, %d, %d) = %d", fd, (int) offset, whence, r)); - return r; -} - -int _fstat(int fd, struct stat *s) { - int r = -1; - memset(s, 0, sizeof(*s)); - switch (fd_type(fd)) { - case FD_INVALID: - r = set_errno(EBADF); - break; - case FD_SYS: { - /* Create barely passable stats for STD{IN,OUT,ERR}. */ - memset(s, 0, sizeof(*s)); - s->st_ino = fd; - s->st_mode = S_IFCHR | 0666; - r = 0; - break; - } -#ifdef CC3200_FS_SPIFFS - case FD_SPIFFS: - r = fs_spiffs_fstat(fd - SPIFFS_FD_BASE, s); - break; -#endif -#ifdef MG_FS_SLFS - case FD_SLFS: - r = fs_slfs_fstat(fd - SLFS_FD_BASE, s); - break; -#endif - } - DBG(("fstat(%d) = %d", fd, r)); - return r; -} - -ssize_t _read(int fd, void *buf, size_t count) { - int r = -1; - switch (fd_type(fd)) { - case FD_INVALID: - r = set_errno(EBADF); - break; - case FD_SYS: { - if (fd != 0) { - r = set_errno(EACCES); - break; - } - /* Should we allow reading from stdin = uart? */ - r = set_errno(ENOTSUP); - break; - } -#ifdef CC3200_FS_SPIFFS - case FD_SPIFFS: - r = fs_spiffs_read(fd - SPIFFS_FD_BASE, buf, count); - break; -#endif -#ifdef MG_FS_SLFS - case FD_SLFS: - r = fs_slfs_read(fd - SLFS_FD_BASE, buf, count); - break; -#endif - } - DBG(("read(%d, %u) = %d", fd, count, r)); - return r; -} - -ssize_t _write(int fd, const void *buf, size_t count) { - int r = -1; - size_t i = 0; - switch (fd_type(fd)) { - case FD_INVALID: - r = set_errno(EBADF); - break; - case FD_SYS: { - if (fd == 0) { - r = set_errno(EACCES); - break; - } -#if CS_PLATFORM == CS_P_CC3200 - for (i = 0; i < count; i++) { - const char c = ((const char *) buf)[i]; - if (c == '\n') MAP_UARTCharPut(CONSOLE_UART, '\r'); - MAP_UARTCharPut(CONSOLE_UART, c); - } -#else - (void) i; -#endif - r = count; - break; - } -#ifdef CC3200_FS_SPIFFS - case FD_SPIFFS: - r = fs_spiffs_write(fd - SPIFFS_FD_BASE, buf, count); - break; -#endif -#ifdef MG_FS_SLFS - case FD_SLFS: - r = fs_slfs_write(fd - SLFS_FD_BASE, buf, count); - break; -#endif - } - return r; -} - -int _rename(const char *from, const char *to) { - int r = -1; - from = drop_dir(from); - to = drop_dir(to); - if (is_sl_fname(from) || is_sl_fname(to)) { -#ifdef MG_FS_SLFS - r = fs_slfs_rename(sl_fname(from), sl_fname(to)); -#endif - } else { -#ifdef CC3200_FS_SPIFFS - r = fs_spiffs_rename(from, to); -#endif - } - DBG(("rename(%s, %s) = %d", from, to, r)); - return r; -} - -int _link(const char *from, const char *to) { - DBG(("link(%s, %s)", from, to)); - return set_errno(ENOTSUP); -} - -int _unlink(const char *filename) { - int r = -1; - filename = drop_dir(filename); - if (is_sl_fname(filename)) { -#ifdef MG_FS_SLFS - r = fs_slfs_unlink(sl_fname(filename)); -#endif - } else { -#ifdef CC3200_FS_SPIFFS - r = fs_spiffs_unlink(filename); -#endif - } - DBG(("unlink(%s) = %d", filename, r)); - return r; -} - -#ifdef CC3200_FS_SPIFFS /* FailFS does not support listing files. */ -DIR *opendir(const char *dir_name) { - DIR *r = NULL; - if (is_sl_fname(dir_name)) { - r = NULL; - set_errno(ENOTSUP); - } else { - r = fs_spiffs_opendir(dir_name); - } - DBG(("opendir(%s) = %p", dir_name, r)); - return r; -} - -struct dirent *readdir(DIR *dir) { - struct dirent *res = fs_spiffs_readdir(dir); - DBG(("readdir(%p) = %p", dir, res)); - return res; -} - -int closedir(DIR *dir) { - int res = fs_spiffs_closedir(dir); - DBG(("closedir(%p) = %d", dir, res)); - return res; -} - -int rmdir(const char *path) { - return fs_spiffs_rmdir(path); -} - -int mkdir(const char *path, mode_t mode) { - (void) path; - (void) mode; - /* for spiffs supports only root dir, which comes from mongoose as '.' */ - return (strlen(path) == 1 && *path == '.') ? 0 : ENOTDIR; -} -#endif - -int sl_fs_init() { - int ret = 1; -#ifdef __TI_COMPILER_VERSION__ -#ifdef MG_FS_SLFS -#pragma diag_push -#pragma diag_suppress 169 /* Nothing we can do about the prototype mismatch. */ - ret = (add_device("SL", _MSA, fs_slfs_open, fs_slfs_close, fs_slfs_read, - fs_slfs_write, fs_slfs_lseek, fs_slfs_unlink, - fs_slfs_rename) == 0); -#pragma diag_pop -#endif -#endif - return ret; -} - -#endif /* defined(MG_SOCKET_SIMPLELINK) && (defined(MG_FS_SLFS) || \ - defined(MG_FS_SPIFFS)) */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/simplelink/sl_socket.c" -#endif -/* - * Copyright (c) 2014-2016 Cesanta Software Limited - * All rights reserved - */ - -#ifdef MG_SOCKET_SIMPLELINK - -#include -#include - -/* Amalgamated: #include "common/platform.h" */ - -#include - -const char *inet_ntop(int af, const void *src, char *dst, socklen_t size) { - int res; - struct in_addr *in = (struct in_addr *) src; - if (af != AF_INET) { - errno = EAFNOSUPPORT; - return NULL; - } - res = snprintf(dst, size, "%lu.%lu.%lu.%lu", SL_IPV4_BYTE(in->s_addr, 0), - SL_IPV4_BYTE(in->s_addr, 1), SL_IPV4_BYTE(in->s_addr, 2), - SL_IPV4_BYTE(in->s_addr, 3)); - return res > 0 ? dst : NULL; -} - -char *inet_ntoa(struct in_addr n) { - static char a[16]; - return (char *) inet_ntop(AF_INET, &n, a, sizeof(n)); -} - -int inet_pton(int af, const char *src, void *dst) { - uint32_t a0, a1, a2, a3; - uint8_t *db = (uint8_t *) dst; - if (af != AF_INET) { - errno = EAFNOSUPPORT; - return 0; - } - if (sscanf(src, "%lu.%lu.%lu.%lu", &a0, &a1, &a2, &a3) != 4) { - return 0; - } - *db = a3; - *(db + 1) = a2; - *(db + 2) = a1; - *(db + 3) = a0; - return 1; -} - -#endif /* CS_COMMON_PLATFORMS_SIMPLELINK_SL_SOCKET_C_ */ -#ifdef MG_MODULE_LINES -#line 1 "./src/../../common/platforms/simplelink/sl_mg_task.c" -#endif -#if defined(MG_SOCKET_SIMPLELINK) - -/* Amalgamated: #include "mg_task.h" */ - -#include - -enum mg_q_msg_type { - MG_Q_MSG_CB, -}; -struct mg_q_msg { - enum mg_q_msg_type type; - void (*cb)(struct mg_mgr *mgr, void *arg); - void *arg; -}; -static OsiMsgQ_t s_mg_q; -static void mg_task(void *arg); - -bool mg_start_task(int priority, int stack_size, mg_init_cb mg_init) { - if (osi_MsgQCreate(&s_mg_q, "MG", sizeof(struct mg_q_msg), 16) != OSI_OK) { - return false; - } - if (osi_TaskCreate(mg_task, (const signed char *) "MG", stack_size, - (void *) mg_init, priority, NULL) != OSI_OK) { - return false; - } - return true; -} - -static void mg_task(void *arg) { - struct mg_mgr mgr; - mg_init_cb mg_init = (mg_init_cb) arg; - mg_mgr_init(&mgr, NULL); - mg_init(&mgr); - while (1) { - struct mg_q_msg msg; - mg_mgr_poll(&mgr, 1); - if (osi_MsgQRead(&s_mg_q, &msg, 1) != OSI_OK) continue; - switch (msg.type) { - case MG_Q_MSG_CB: { - msg.cb(&mgr, msg.arg); - } - } - } -} - -void mg_run_in_task(void (*cb)(struct mg_mgr *mgr, void *arg), void *cb_arg) { - struct mg_q_msg msg = {MG_Q_MSG_CB, cb, cb_arg}; - osi_MsgQWrite(&s_mg_q, &msg, OSI_NO_WAIT); -} - -#endif /* defined(MG_SOCKET_SIMPLELINK) */