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https://github.com/alliedmodders/amxmodx.git
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f09f4a4c6c
Since we're compiling against v120_xp now, C99 is supported, which makes the previous compatibility changes pointless. This reverts to the state of the original content. For maintainability reason, it's welcomed. For reference, the only change now is the moving of PACKAGE_VERSION define to be available for linux too (since we don't use configure.ac)
168 lines
6.3 KiB
C
168 lines
6.3 KiB
C
#include <stdlib.h>
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#include <string.h>
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/* *INDENT-OFF* */
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/* The memmem, strdup, and strndup functions were all copied from the
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* FreeBSD source, along with the relevant copyright notice.
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*
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* It'd be nicer to simply use the functions available on the system if they
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* exist, but there doesn't seem to be a good way to detect them without also
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* defining things like _GNU_SOURCE, which we want to avoid, because then we
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* end up _accidentally_ using GNU features without noticing, which then
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* breaks on systems like OSX.
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*
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* C is fun! */
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/* Applies to memmem implementation */
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/*-
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* Copyright (c) 2005 Pascal Gloor <pascal.gloor@spale.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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static void *
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mmdb_memmem(const void *l, size_t l_len, const void *s, size_t s_len)
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{
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register char *cur, *last;
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const char *cl = (const char *)l;
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const char *cs = (const char *)s;
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/* we need something to compare */
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if (l_len == 0 || s_len == 0)
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return NULL;
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/* "s" must be smaller or equal to "l" */
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if (l_len < s_len)
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return NULL;
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/* special case where s_len == 1 */
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if (s_len == 1)
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return memchr(l, (int)*cs, l_len);
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/* the last position where its possible to find "s" in "l" */
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last = (char *)cl + l_len - s_len;
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for (cur = (char *)cl; cur <= last; cur++)
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if (cur[0] == cs[0] && memcmp(cur, cs, s_len) == 0)
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return cur;
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return NULL;
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}
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/* Applies to strnlen implementation */
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/*-
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* Copyright (c) 2009 David Schultz <das@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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static size_t
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mmdb_strnlen(const char *s, size_t maxlen)
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{
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size_t len;
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for (len = 0; len < maxlen; len++, s++) {
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if (!*s)
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break;
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}
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return (len);
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}
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/* Applies to strdup and strndup implementation */
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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static char *
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mmdb_strdup(const char *str)
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{
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size_t len;
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char *copy;
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len = strlen(str) + 1;
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if ((copy = malloc(len)) == NULL)
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return (NULL);
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memcpy(copy, str, len);
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return (copy);
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}
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static char *
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mmdb_strndup(const char *str, size_t n)
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{
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size_t len;
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char *copy;
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len = mmdb_strnlen(str, n);
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if ((copy = malloc(len + 1)) == NULL)
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return (NULL);
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memcpy(copy, str, len);
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copy[len] = '\0';
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return (copy);
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}
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/* *INDENT-ON* */
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