mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-08 08:47:17 +01:00
70e5f0ba21
Also enabled the latest C++ revision in the project. Replaced the Random library with the one provided by C++11. Implemented a simple AES256 encryption class. Various other fixes and improvements.
168 lines
6.3 KiB
C
168 lines
6.3 KiB
C
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/* *INDENT-OFF* */
|
|
|
|
/* The memmem, strdup, and strndup functions were all copied from the
|
|
* FreeBSD source, along with the relevant copyright notice.
|
|
*
|
|
* It'd be nicer to simply use the functions available on the system if they
|
|
* exist, but there doesn't seem to be a good way to detect them without also
|
|
* defining things like _GNU_SOURCE, which we want to avoid, because then we
|
|
* end up _accidentally_ using GNU features without noticing, which then
|
|
* breaks on systems like OSX.
|
|
*
|
|
* C is fun! */
|
|
|
|
/* Applies to memmem implementation */
|
|
/*-
|
|
* Copyright (c) 2005 Pascal Gloor <pascal.gloor@spale.com>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
static void *
|
|
mmdb_memmem(const void *l, size_t l_len, const void *s, size_t s_len)
|
|
{
|
|
register char *cur, *last;
|
|
const char *cl = (const char *)l;
|
|
const char *cs = (const char *)s;
|
|
|
|
/* we need something to compare */
|
|
if (l_len == 0 || s_len == 0)
|
|
return NULL;
|
|
|
|
/* "s" must be smaller or equal to "l" */
|
|
if (l_len < s_len)
|
|
return NULL;
|
|
|
|
/* special case where s_len == 1 */
|
|
if (s_len == 1)
|
|
return memchr(l, (int)*cs, l_len);
|
|
|
|
/* the last position where its possible to find "s" in "l" */
|
|
last = (char *)cl + l_len - s_len;
|
|
|
|
for (cur = (char *)cl; cur <= last; cur++)
|
|
if (cur[0] == cs[0] && memcmp(cur, cs, s_len) == 0)
|
|
return cur;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Applies to strnlen implementation */
|
|
/*-
|
|
* Copyright (c) 2009 David Schultz <das@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
static size_t
|
|
mmdb_strnlen(const char *s, size_t maxlen)
|
|
{
|
|
size_t len;
|
|
|
|
for (len = 0; len < maxlen; len++, s++) {
|
|
if (!*s)
|
|
break;
|
|
}
|
|
return (len);
|
|
}
|
|
|
|
/* Applies to strdup and strndup implementation */
|
|
/*
|
|
* Copyright (c) 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
static char *
|
|
mmdb_strdup(const char *str)
|
|
{
|
|
size_t len;
|
|
char *copy;
|
|
|
|
len = strlen(str) + 1;
|
|
if ((copy = malloc(len)) == NULL)
|
|
return (NULL);
|
|
memcpy(copy, str, len);
|
|
return (copy);
|
|
}
|
|
|
|
static char *
|
|
mmdb_strndup(const char *str, size_t n)
|
|
{
|
|
size_t len;
|
|
char *copy;
|
|
|
|
len = mmdb_strnlen(str, n);
|
|
if ((copy = malloc(len + 1)) == NULL)
|
|
return (NULL);
|
|
memcpy(copy, str, len);
|
|
copy[len] = '\0';
|
|
return (copy);
|
|
}
|
|
/* *INDENT-ON* */
|