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Diffstat (limited to 'src/irc_string.c')
-rw-r--r-- | src/irc_string.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/src/irc_string.c b/src/irc_string.c new file mode 100644 index 0000000..08b4321 --- /dev/null +++ b/src/irc_string.c @@ -0,0 +1,263 @@ +/* + * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). + * irc_string.c: IRC string functions. + * + * Copyright (C) 2002 by the past and present ircd coders, and others. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * $Id$ + */ + +#include "config.h" +#ifdef HAVE_LIBPCRE +#include <pcre.h> +#endif + +#include "stdinc.h" +#include "irc_string.h" +#include "sprintf_irc.h" + + +int +has_wildcards(const char *s) +{ + char c; + + while ((c = *s++)) + if (IsMWildChar(c)) + return 1; + + return 0; +} + +/* + * myctime - This is like standard ctime()-function, but it zaps away + * the newline from the end of that string. Also, it takes + * the time value as parameter, instead of pointer to it. + * Note that it is necessary to copy the string to alternate + * buffer (who knows how ctime() implements it, maybe it statically + * has newline there and never 'refreshes' it -- zapping that + * might break things in other places...) + * + * + * Thu Nov 24 18:22:48 1986 + */ +const char * +myctime(time_t value) +{ + static char buf[32]; + char *p; + + strcpy(buf, ctime(&value)); + + if ((p = strchr(buf, '\n')) != NULL) + *p = '\0'; + return buf; +} + +/* + * strip_tabs(dst, src, length) + * + * Copies src to dst, while converting all \t (tabs) into spaces. + */ +void +strip_tabs(char *dest, const char *src, size_t len) +{ + char *d = dest; + + /* Sanity check; we don't want anything nasty... */ + assert(dest != NULL); + assert(src != NULL); + assert(len > 0); + + for (; --len && *src; ++src) + *d++ = *src == '\t' ? ' ' : *src; + + *d = '\0'; /* NUL terminate, thanks and goodbye */ +} + +/* + * strtoken - walk through a string of tokens, using a set of separators + * argv 9/90 + * + */ +#ifndef HAVE_STRTOK_R + +char * +strtoken(char** save, char* str, const char* fs) +{ + char* pos = *save; /* keep last position across calls */ + char* tmp; + + if (str) + pos = str; /* new string scan */ + + while (pos && *pos && strchr(fs, *pos) != NULL) + ++pos; /* skip leading separators */ + + if (!pos || !*pos) + return (pos = *save = NULL); /* string contains only sep's */ + + tmp = pos; /* now, keep position of the token */ + + while (*pos && strchr(fs, *pos) == NULL) + ++pos; /* skip content of the token */ + + if (*pos) + *pos++ = '\0'; /* remove first sep after the token */ + else + pos = NULL; /* end of string */ + + *save = pos; + return tmp; +} +#endif /* !HAVE_STRTOK_R */ + +/* libio_basename() + * + * input - i.e. "/usr/local/ircd/modules/m_whois.so" + * output - i.e. "m_whois.so" + * side effects - this will be overwritten on subsequent calls + */ +const char * +libio_basename(const char *path) +{ + const char *s; + + if ((s = strrchr(path, '/')) == NULL) + s = path; + else + s++; + + return s; +} + +/* + * strlcat and strlcpy were ripped from openssh 2.5.1p2 + * They had the following Copyright info: + * + * + * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> + * 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. 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 `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 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. + */ + +#ifndef HAVE_STRLCAT +size_t +strlcat(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz, dlen; + + while (n-- != 0 && *d != '\0') + d++; + + dlen = d - dst; + n = siz - dlen; + + if (n == 0) + return dlen + strlen(s); + + while (*s != '\0') + { + if (n != 1) + { + *d++ = *s; + n--; + } + + s++; + } + + *d = '\0'; + return dlen + (s - src); /* count does not include NUL */ +} +#endif + +#ifndef HAVE_STRLCPY +size_t +strlcpy(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + + /* Copy as many bytes as will fit */ + if (n != 0 && --n != 0) + { + do + { + if ((*d++ = *s++) == 0) + break; + } while (--n != 0); + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) + { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + + return s - src - 1; /* count does not include NUL */ +} +#endif + +#ifdef HAVE_LIBPCRE +void * +ircd_pcre_compile(const char *pattern, const char **errptr) +{ + int erroroffset = 0; + int options = PCRE_EXTRA; + + assert(pattern); + + return pcre_compile(pattern, options, errptr, &erroroffset, NULL); +} + +int +ircd_pcre_exec(const void *code, const char *subject) +{ + assert(code && subject); + + return pcre_exec(code, NULL, subject, strlen(subject), 0, 0, NULL, 0) < 0; +} +#endif |