diff options
Diffstat (limited to 'src/fluent-bit/plugins/filter_geoip2/libmaxminddb/src/maxminddb-compat-util.h')
| -rw-r--r-- | src/fluent-bit/plugins/filter_geoip2/libmaxminddb/src/maxminddb-compat-util.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/filter_geoip2/libmaxminddb/src/maxminddb-compat-util.h b/src/fluent-bit/plugins/filter_geoip2/libmaxminddb/src/maxminddb-compat-util.h new file mode 100644 index 000000000..e3f0320f2 --- /dev/null +++ b/src/fluent-bit/plugins/filter_geoip2/libmaxminddb/src/maxminddb-compat-util.h @@ -0,0 +1,167 @@ +#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* */ |