trunk/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"
#include "stdinc.h"
#include "irc_string.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;

  strlcpy(buf, ctime(&value), sizeof(buf));

  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
Revision:	1921
Committed:	Tue Apr 30 14:54:20 2013 UTC (12 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	5941 byte(s)
Log Message:	- Forward-port -r1920 [Dropped PCRE support]
#	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	#include "stdinc.h"
27	#include "irc_string.h"
28
29
30	int
31	has_wildcards(const char *s)
32	{
33	char c;
34
35	while ((c = *s++))
36	if (IsMWildChar(c))
37	return 1;
38
39	return 0;
40	}
41
42	/*
43	* myctime - This is like standard ctime()-function, but it zaps away
44	* the newline from the end of that string. Also, it takes
45	* the time value as parameter, instead of pointer to it.
46	* Note that it is necessary to copy the string to alternate
47	* buffer (who knows how ctime() implements it, maybe it statically
48	* has newline there and never 'refreshes' it -- zapping that
49	* might break things in other places...)
50	*
51	*
52	* Thu Nov 24 18:22:48 1986
53	*/
54	const char *
55	myctime(time_t value)
56	{
57	static char buf[32];
58	char *p;
59
60	strlcpy(buf, ctime(&value), sizeof(buf));
61
62	if ((p = strchr(buf, '\n')) != NULL)
63	*p = '\0';
64	return buf;
65	}
66
67	/*
68	* strip_tabs(dst, src, length)
69	*
70	* Copies src to dst, while converting all \t (tabs) into spaces.
71	*/
72	void
73	strip_tabs(char dest, const char src, size_t len)
74	{
75	char *d = dest;
76
77	/* Sanity check; we don't want anything nasty... */
78	assert(dest != NULL);
79	assert(src != NULL);
80	assert(len > 0);
81
82	for (; --len && *src; ++src)
83	d++ = src == '\t' ? ' ' : *src;
84
85	d = '\0'; / NUL terminate, thanks and goodbye */
86	}
87
88	/*
89	* strtoken - walk through a string of tokens, using a set of separators
90	* argv 9/90
91	*
92	*/
93	#ifndef HAVE_STRTOK_R
94
95	char *
96	strtoken(char** save, char* str, const char* fs)
97	{
98	char* pos = save; / keep last position across calls */
99	char* tmp;
100
101	if (str)
102	pos = str; /* new string scan */
103
104	while (pos && pos && strchr(fs, pos) != NULL)
105	++pos; /* skip leading separators */
106
107	if (!pos \|\| !*pos)
108	return (pos = save = NULL); / string contains only sep's */
109
110	tmp = pos; /* now, keep position of the token */
111
112	while (pos && strchr(fs, pos) == NULL)
113	++pos; /* skip content of the token */
114
115	if (*pos)
116	pos++ = '\0'; / remove first sep after the token */
117	else
118	pos = NULL; /* end of string */
119
120	*save = pos;
121	return tmp;
122	}
123	#endif /* !HAVE_STRTOK_R */
124
125	/* libio_basename()
126	*
127	* input - i.e. "/usr/local/ircd/modules/m_whois.so"
128	* output - i.e. "m_whois.so"
129	* side effects - this will be overwritten on subsequent calls
130	*/
131	const char *
132	libio_basename(const char *path)
133	{
134	const char *s;
135
136	if ((s = strrchr(path, '/')) == NULL)
137	s = path;
138	else
139	s++;
140
141	return s;
142	}
143
144	/*
145	* strlcat and strlcpy were ripped from openssh 2.5.1p2
146	* They had the following Copyright info:
147	*
148	*
149	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
150	* All rights reserved.
151	*
152	* Redistribution and use in source and binary forms, with or without
153	* modification, are permitted provided that the following conditions
154	* are met:
155	* 1. Redistributions of source code must retain the above copyright
156	* notice, this list of conditions and the following disclaimer.
157	* 2. Redistributions in binary form must reproduce the above copyright
158	* notice, this list of conditions and the following disclaimer in the
159	* documentation and/or other materials provided with the distribution.
160	* 3. The name of the author may not be used to endorse or promote products
161	* derived from this software without specific prior written permission.
162	*
163	* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
164	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
165	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
166	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
167	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
168	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
169	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
170	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
171	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
172	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
173	*/
174
175	#ifndef HAVE_STRLCAT
176	size_t
177	strlcat(char dst, const char src, size_t siz)
178	{
179	char *d = dst;
180	const char *s = src;
181	size_t n = siz, dlen;
182
183	while (n-- != 0 && *d != '\0')
184	d++;
185
186	dlen = d - dst;
187	n = siz - dlen;
188
189	if (n == 0)
190	return dlen + strlen(s);
191
192	while (*s != '\0')
193	{
194	if (n != 1)
195	{
196	d++ = s;
197	n--;
198	}
199
200	s++;
201	}
202
203	*d = '\0';
204	return dlen + (s - src); /* count does not include NUL */
205	}
206	#endif
207
208	#ifndef HAVE_STRLCPY
209	size_t
210	strlcpy(char dst, const char src, size_t siz)
211	{
212	char *d = dst;
213	const char *s = src;
214	size_t n = siz;
215
216	/* Copy as many bytes as will fit */
217	if (n != 0 && --n != 0)
218	{
219	do
220	{
221	if ((d++ = s++) == 0)
222	break;
223	} while (--n != 0);
224	}
225
226	/* Not enough room in dst, add NUL and traverse rest of src */
227	if (n == 0)
228	{
229	if (siz != 0)
230	d = '\0'; / NUL-terminate dst */
231	while (*s++)
232	;
233	}
234
235	return s - src - 1; /* count does not include NUL */
236	}
237	#endif