ircd-hybrid-8/src/irc_string.c

/*
 *  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
Revision:	1400
Committed:	Mon May 7 20:08:32 2012 UTC (13 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	6406 byte(s)
Log Message:	- move has_wildcards() to irc_string.c and make use of it in several places
#	Content
1	/*
2	* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3	* irc_string.c: IRC string functions.
4	*
5	* Copyright (C) 2002 by the past and present ircd coders, and others.
6	*
7	* This program is free software; you can redistribute it and/or modify
8	* it under the terms of the GNU General Public License as published by
9	* the Free Software Foundation; either version 2 of the License, or
10	* (at your option) any later version.
11	*
12	* This program is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with this program; if not, write to the Free Software
19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20	* USA
21	*
22	* $Id$
23	*/
24
25	#include "config.h"
26	#ifdef HAVE_LIBPCRE
27	#include <pcre.h>
28	#endif
29
30	#include "stdinc.h"
31	#include "irc_string.h"
32	#include "sprintf_irc.h"
33
34
35	int
36	has_wildcards(const char *s)
37	{
38	char c;
39
40	while ((c = *s++))
41	if (IsMWildChar(c))
42	return 1;
43
44	return 0;
45	}
46
47	/*
48	* myctime - This is like standard ctime()-function, but it zaps away
49	* the newline from the end of that string. Also, it takes
50	* the time value as parameter, instead of pointer to it.
51	* Note that it is necessary to copy the string to alternate
52	* buffer (who knows how ctime() implements it, maybe it statically
53	* has newline there and never 'refreshes' it -- zapping that
54	* might break things in other places...)
55	*
56	*
57	* Thu Nov 24 18:22:48 1986
58	*/
59	const char *
60	myctime(time_t value)
61	{
62	static char buf[32];
63	char *p;
64
65	strcpy(buf, ctime(&value));
66
67	if ((p = strchr(buf, '\n')) != NULL)
68	*p = '\0';
69	return buf;
70	}
71
72	/*
73	* strip_tabs(dst, src, length)
74	*
75	* Copies src to dst, while converting all \t (tabs) into spaces.
76	*/
77	void
78	strip_tabs(char dest, const char src, size_t len)
79	{
80	char *d = dest;
81
82	/* Sanity check; we don't want anything nasty... */
83	assert(dest != NULL);
84	assert(src != NULL);
85	assert(len > 0);
86
87	for (; --len && *src; ++src)
88	d++ = src == '\t' ? ' ' : *src;
89
90	d = '\0'; / NUL terminate, thanks and goodbye */
91	}
92
93	/*
94	* strtoken - walk through a string of tokens, using a set of separators
95	* argv 9/90
96	*
97	*/
98	#ifndef HAVE_STRTOK_R
99
100	char *
101	strtoken(char** save, char* str, const char* fs)
102	{
103	char* pos = save; / keep last position across calls */
104	char* tmp;
105
106	if (str)
107	pos = str; /* new string scan */
108
109	while (pos && pos && strchr(fs, pos) != NULL)
110	++pos; /* skip leading separators */
111
112	if (!pos \|\| !*pos)
113	return (pos = save = NULL); / string contains only sep's */
114
115	tmp = pos; /* now, keep position of the token */
116
117	while (pos && strchr(fs, pos) == NULL)
118	++pos; /* skip content of the token */
119
120	if (*pos)
121	pos++ = '\0'; / remove first sep after the token */
122	else
123	pos = NULL; /* end of string */
124
125	*save = pos;
126	return tmp;
127	}
128	#endif /* !HAVE_STRTOK_R */
129
130	/* libio_basename()
131	*
132	* input - i.e. "/usr/local/ircd/modules/m_whois.so"
133	* output - i.e. "m_whois.so"
134	* side effects - this will be overwritten on subsequent calls
135	*/
136	const char *
137	libio_basename(const char *path)
138	{
139	const char *s;
140
141	if ((s = strrchr(path, '/')) == NULL)
142	s = path;
143	else
144	s++;
145
146	return s;
147	}
148
149	/*
150	* strlcat and strlcpy were ripped from openssh 2.5.1p2
151	* They had the following Copyright info:
152	*
153	*
154	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
155	* All rights reserved.
156	*
157	* Redistribution and use in source and binary forms, with or without
158	* modification, are permitted provided that the following conditions
159	* are met:
160	* 1. Redistributions of source code must retain the above copyright
161	* notice, this list of conditions and the following disclaimer.
162	* 2. Redistributions in binary form must reproduce the above copyright
163	* notice, this list of conditions and the following disclaimer in the
164	* documentation and/or other materials provided with the distribution.
165	* 3. The name of the author may not be used to endorse or promote products
166	* derived from this software without specific prior written permission.
167	*
168	* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
169	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
170	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
171	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
172	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
173	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
174	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
175	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
176	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
177	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
178	*/
179
180	#ifndef HAVE_STRLCAT
181	size_t
182	strlcat(char dst, const char src, size_t siz)
183	{
184	char *d = dst;
185	const char *s = src;
186	size_t n = siz, dlen;
187
188	while (n-- != 0 && *d != '\0')
189	d++;
190
191	dlen = d - dst;
192	n = siz - dlen;
193
194	if (n == 0)
195	return dlen + strlen(s);
196
197	while (*s != '\0')
198	{
199	if (n != 1)
200	{
201	d++ = s;
202	n--;
203	}
204
205	s++;
206	}
207
208	*d = '\0';
209	return dlen + (s - src); /* count does not include NUL */
210	}
211	#endif
212
213	#ifndef HAVE_STRLCPY
214	size_t
215	strlcpy(char dst, const char src, size_t siz)
216	{
217	char *d = dst;
218	const char *s = src;
219	size_t n = siz;
220
221	/* Copy as many bytes as will fit */
222	if (n != 0 && --n != 0)
223	{
224	do
225	{
226	if ((d++ = s++) == 0)
227	break;
228	} while (--n != 0);
229	}
230
231	/* Not enough room in dst, add NUL and traverse rest of src */
232	if (n == 0)
233	{
234	if (siz != 0)
235	d = '\0'; / NUL-terminate dst */
236	while (*s++)
237	;
238	}
239
240	return s - src - 1; /* count does not include NUL */
241	}
242	#endif
243
244	#ifdef HAVE_LIBPCRE
245	void *
246	ircd_pcre_compile(const char pattern, const char *errptr)
247	{
248	int erroroffset = 0;
249	int options = PCRE_EXTRA;
250
251	assert(pattern);
252
253	return pcre_compile(pattern, options, errptr, &erroroffset, NULL);
254	}
255
256	int
257	ircd_pcre_exec(const void code, const char subject)
258	{
259	assert(code && subject);
260
261	return pcre_exec(code, NULL, subject, strlen(subject), 0, 0, NULL, 0) < 0;
262	}
263	#endif