mirror of
https://github.com/VCMP-SqMod/SqMod.git
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305 lines
9.2 KiB
C
305 lines
9.2 KiB
C
/************************************************************************************
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Copyright (C) 2000, 2011 MySQL AB & MySQL Finland AB & TCX DataKonsult AB,
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Monty Program AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not see <http://www.gnu.org/licenses>
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or write to the Free Software Foundation, Inc.,
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51 Franklin St., Fifth Floor, Boston, MA 02110, USA
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Part of this code includes code from the PHP project which
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is freely available from http://www.php.net
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*************************************************************************************/
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/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 2006-2011 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Georg Richter <georg@mysql.com> |
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| Andrey Hristov <andrey@mysql.com> |
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| Ulf Wendel <uwendel@mysql.com> |
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+----------------------------------------------------------------------+
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*/
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#include "my_global.h"
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#include <my_sys.h>
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#include <mysys_err.h>
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#include <m_string.h>
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#include "errmsg.h"
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#include "mysql.h"
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#include <string.h>
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#ifdef _WIN32
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#include <share.h>
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#endif
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typedef struct st_mysql_infile_info
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{
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int fd;
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int error_no;
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char error_msg[MYSQL_ERRMSG_SIZE + 1];
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const char *filename;
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} MYSQL_INFILE_INFO;
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/* {{{ mysql_local_infile_init */
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static
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int mysql_local_infile_init(void **ptr, const char *filename, void *userdata)
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{
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MYSQL_INFILE_INFO *info;
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int CodePage= -1;
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#ifdef _WIN32
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MYSQL *mysql= (MYSQL *)userdata;
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wchar_t *w_filename= NULL;
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int Length;
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#endif
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DBUG_ENTER("mysql_local_infile_init");
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info = (MYSQL_INFILE_INFO *)my_malloc(sizeof(MYSQL_INFILE_INFO), MYF(MY_ZEROFILL));
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if (!info) {
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DBUG_RETURN(1);
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}
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*ptr = info;
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info->filename = filename;
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#ifdef _WIN32
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if (mysql)
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CodePage= madb_get_windows_cp(mysql->charset->csname);
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#endif
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if (CodePage == -1)
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{
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#ifdef _WIN32
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info->fd= sopen(info->filename, _O_RDONLY | _O_BINARY, _SH_DENYNO , _S_IREAD | _S_IWRITE);
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#else
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info->fd = open(info->filename, O_RDONLY | O_BINARY, my_umask);
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#endif
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my_errno= errno;
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}
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#ifdef _WIN32
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else
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{
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if ((Length= MultiByteToWideChar(CodePage, 0, info->filename, (int)strlen(info->filename), NULL, 0)))
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{
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if (!(w_filename= (wchar_t *)my_malloc((Length + 1) * sizeof(wchar_t), MYF(MY_ZEROFILL))))
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{
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info->error_no= CR_OUT_OF_MEMORY;
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my_snprintf((char *)info->error_msg, sizeof(info->error_msg),
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ER(CR_OUT_OF_MEMORY));
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DBUG_RETURN(1);
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}
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Length= MultiByteToWideChar(CodePage, 0, info->filename, (int)strlen(info->filename), w_filename, (int)Length);
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}
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if (Length == 0)
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{
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my_free(w_filename);
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info->error_no= CR_UNKNOWN_ERROR;
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my_snprintf((char *)info->error_msg, sizeof(info->error_msg),
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"Character conversion error: %d", GetLastError());
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DBUG_RETURN(1);
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}
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info->fd= _wsopen(w_filename, _O_RDONLY | _O_BINARY, _SH_DENYNO , _S_IREAD | _S_IWRITE);
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my_errno= errno;
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my_free(w_filename);
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}
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#endif
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if (info->fd < 0)
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{
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info->error_no = my_errno;
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my_snprintf((char *)info->error_msg, sizeof(info->error_msg),
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EE(EE_FILENOTFOUND), filename, info->error_no);
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DBUG_RETURN(1);
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}
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DBUG_RETURN(0);
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}
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/* }}} */
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/* {{{ mysql_local_infile_read */
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static
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int mysql_local_infile_read(void *ptr, char * buf, unsigned int buf_len)
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{
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MYSQL_INFILE_INFO *info = (MYSQL_INFILE_INFO *)ptr;
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int count;
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DBUG_ENTER("mysql_local_infile_read");
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count= read(info->fd, (void *)buf, (size_t)buf_len);
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if (count < 0)
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{
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strcpy(info->error_msg, "Error reading file");
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info->error_no = EE_READ;
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}
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DBUG_RETURN(count);
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}
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/* }}} */
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/* {{{ mysql_local_infile_error */
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static
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int mysql_local_infile_error(void *ptr, char *error_buf, unsigned int error_buf_len)
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{
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MYSQL_INFILE_INFO *info = (MYSQL_INFILE_INFO *)ptr;
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DBUG_ENTER("mysql_local_infile_error");
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if (info) {
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strncpy(error_buf, info->error_msg, error_buf_len);
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DBUG_RETURN(info->error_no);
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}
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strncpy(error_buf, "Unknown error", error_buf_len);
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DBUG_RETURN(CR_UNKNOWN_ERROR);
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}
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/* }}} */
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/* {{{ mysql_local_infile_end */
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static
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void mysql_local_infile_end(void *ptr)
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{
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MYSQL_INFILE_INFO *info = (MYSQL_INFILE_INFO *)ptr;
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DBUG_ENTER("mysql_local_infile_end");
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if (info)
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{
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if (info->fd >= 0)
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close(info->fd);
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my_free(ptr);
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}
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DBUG_VOID_RETURN;
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}
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/* }}} */
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/* {{{ mysql_local_infile_default */
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void mysql_set_local_infile_default(MYSQL *conn)
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{
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DBUG_ENTER("mysql_local_infile_default");
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conn->options.local_infile_init = mysql_local_infile_init;
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conn->options.local_infile_read = mysql_local_infile_read;
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conn->options.local_infile_error = mysql_local_infile_error;
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conn->options.local_infile_end = mysql_local_infile_end;
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DBUG_VOID_RETURN;
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}
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/* }}} */
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/* {{{ mysql_set_local_infile_handler */
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void STDCALL mysql_set_local_infile_handler(MYSQL *conn,
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int (*local_infile_init)(void **, const char *, void *),
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int (*local_infile_read)(void *, char *, uint),
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void (*local_infile_end)(void *),
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int (*local_infile_error)(void *, char *, uint),
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void *userdata)
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{
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DBUG_ENTER("mysql_set_local_infile_handler");
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conn->options.local_infile_init= local_infile_init;
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conn->options.local_infile_read= local_infile_read;
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conn->options.local_infile_end= local_infile_end;
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conn->options.local_infile_error= local_infile_error;
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conn->options.local_infile_userdata[0] = userdata;
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DBUG_VOID_RETURN;
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}
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/* }}} */
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/* {{{ mysql_handle_local_infile */
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my_bool mysql_handle_local_infile(MYSQL *conn, const char *filename)
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{
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unsigned int buflen= 4096;
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int bufread;
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unsigned char *buf= NULL;
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void *info= NULL;
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my_bool result= 1;
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DBUG_ENTER("mysql_handle_local_infile");
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/* check if all callback functions exist */
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if (!conn->options.local_infile_init || !conn->options.local_infile_end ||
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!conn->options.local_infile_read || !conn->options.local_infile_error)
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{
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conn->options.local_infile_userdata[0]= conn;
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mysql_set_local_infile_default(conn);
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}
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if (!(conn->options.client_flag & CLIENT_LOCAL_FILES)) {
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my_set_error(conn, CR_UNKNOWN_ERROR, SQLSTATE_UNKNOWN, "Load data local infile forbidden");
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/* write empty packet to server */
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my_net_write(&conn->net, "", 0);
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net_flush(&conn->net);
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goto infile_error;
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}
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/* allocate buffer for reading data */
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buf = (uchar *)my_malloc(buflen, MYF(0));
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/* init handler: allocate read buffer and open file */
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if (conn->options.local_infile_init(&info, filename,
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conn->options.local_infile_userdata[0]))
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{
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char tmp_buf[MYSQL_ERRMSG_SIZE];
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int tmp_errno;
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tmp_errno= conn->options.local_infile_error(info, tmp_buf, sizeof(tmp_buf));
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my_set_error(conn, tmp_errno, SQLSTATE_UNKNOWN, tmp_buf);
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my_net_write(&conn->net, "", 0);
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net_flush(&conn->net);
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goto infile_error;
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}
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/* read data */
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while ((bufread= conn->options.local_infile_read(info, (char *)buf, buflen)) > 0)
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{
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if (my_net_write(&conn->net, (char *)buf, bufread))
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{
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my_set_error(conn, CR_SERVER_LOST, SQLSTATE_UNKNOWN, NULL);
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goto infile_error;
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}
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}
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/* send empty packet for eof */
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if (my_net_write(&conn->net, "", 0) || net_flush(&conn->net))
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{
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my_set_error(conn, CR_SERVER_LOST, SQLSTATE_UNKNOWN, NULL);
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goto infile_error;
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}
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/* error during read occured */
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if (bufread < 0)
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{
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char tmp_buf[MYSQL_ERRMSG_SIZE];
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int tmp_errno= conn->options.local_infile_error(info, tmp_buf, sizeof(tmp_buf));
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my_set_error(conn, tmp_errno, SQLSTATE_UNKNOWN, tmp_buf);
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goto infile_error;
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}
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result = 0;
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infile_error:
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conn->options.local_infile_end(info);
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my_free(buf);
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DBUG_RETURN(result);
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}
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/* }}} */
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