trunk/src/irc_string.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 ircd-hybrid development team
 *
 *  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
 */

/*! \file irc_string.c
 * \brief IRC string functions.
 * \version $Id$
 */

#include "config.h"
#include "stdinc.h"
#include "irc_string.h"


int
has_wildcards(const char *str)
{
  const unsigned char *p = (const unsigned char *)str;

  for (; *p; ++p)
  {
    if (*p == '\\')
    {
      if (*++p == '\0')
        return 0;
    }
    else if (IsMWildChar(*p))
      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:	2916
Committed:	Sat Jan 25 21:09:18 2014 UTC (12 years, 8 months ago) by michael
Content type:	text/x-csrc
File size:	6085 byte(s)
Log Message:	- Clean up all files in include/ (fixed indentation, removed whitespaces/tabs) - Fixed copyright years
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2014 ircd-hybrid development team
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19	* USA
20	*/
21
22	/*! \file irc_string.c
23	* \brief IRC string functions.
24	* \version $Id$
25	*/
26
27	#include "config.h"
28	#include "stdinc.h"
29	#include "irc_string.h"
30
31
32	int
33	has_wildcards(const char *str)
34	{
35	const unsigned char p = (const unsigned char )str;
36
37	for (; *p; ++p)
38	{
39	if (*p == '\\')
40	{
41	if (*++p == '\0')
42	return 0;
43	}
44	else if (IsMWildChar(*p))
45	return 1;
46	}
47
48	return 0;
49	}
50
51	/*
52	* myctime - This is like standard ctime()-function, but it zaps away
53	* the newline from the end of that string. Also, it takes
54	* the time value as parameter, instead of pointer to it.
55	* Note that it is necessary to copy the string to alternate
56	* buffer (who knows how ctime() implements it, maybe it statically
57	* has newline there and never 'refreshes' it -- zapping that
58	* might break things in other places...)
59	*
60	*
61	* Thu Nov 24 18:22:48 1986
62	*/
63	const char *
64	myctime(time_t value)
65	{
66	static char buf[32];
67	char *p;
68
69	strlcpy(buf, ctime(&value), sizeof(buf));
70
71	if ((p = strchr(buf, '\n')) != NULL)
72	*p = '\0';
73	return buf;
74	}
75
76	/*
77	* strip_tabs(dst, src, length)
78	*
79	* Copies src to dst, while converting all \t (tabs) into spaces.
80	*/
81	void
82	strip_tabs(char dest, const char src, size_t len)
83	{
84	char *d = dest;
85
86	/* Sanity check; we don't want anything nasty... */
87	assert(dest != NULL);
88	assert(src != NULL);
89	assert(len > 0);
90
91	for (; --len && *src; ++src)
92	d++ = src == '\t' ? ' ' : *src;
93
94	d = '\0'; / NUL terminate, thanks and goodbye */
95	}
96
97	/*
98	* strtoken - walk through a string of tokens, using a set of separators
99	* argv 9/90
100	*
101	*/
102	#ifndef HAVE_STRTOK_R
103	char *
104	strtoken(char** save, char* str, const char* fs)
105	{
106	char* pos = save; / keep last position across calls */
107	char* tmp;
108
109	if (str)
110	pos = str; /* new string scan */
111
112	while (pos && pos && strchr(fs, pos) != NULL)
113	++pos; /* skip leading separators */
114
115	if (!pos \|\| !*pos)
116	return (pos = save = NULL); / string contains only sep's */
117
118	tmp = pos; /* now, keep position of the token */
119
120	while (pos && strchr(fs, pos) == NULL)
121	++pos; /* skip content of the token */
122
123	if (*pos)
124	pos++ = '\0'; / remove first sep after the token */
125	else
126	pos = NULL; /* end of string */
127
128	*save = pos;
129	return tmp;
130	}
131	#endif /* !HAVE_STRTOK_R */
132
133	/* libio_basename()
134	*
135	* input - i.e. "/usr/local/ircd/modules/m_whois.so"
136	* output - i.e. "m_whois.so"
137	* side effects - this will be overwritten on subsequent calls
138	*/
139	const char *
140	libio_basename(const char *path)
141	{
142	const char *s;
143
144	if ((s = strrchr(path, '/')) == NULL)
145	s = path;
146	else
147	s++;
148
149	return s;
150	}
151
152	/*
153	* strlcat and strlcpy were ripped from openssh 2.5.1p2
154	* They had the following Copyright info:
155	*
156	*
157	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
158	* All rights reserved.
159	*
160	* Redistribution and use in source and binary forms, with or without
161	* modification, are permitted provided that the following conditions
162	* are met:
163	* 1. Redistributions of source code must retain the above copyright
164	* notice, this list of conditions and the following disclaimer.
165	* 2. Redistributions in binary form must reproduce the above copyright
166	* notice, this list of conditions and the following disclaimer in the
167	* documentation and/or other materials provided with the distribution.
168	* 3. The name of the author may not be used to endorse or promote products
169	* derived from this software without specific prior written permission.
170	*
171	* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
172	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
173	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
174	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
175	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
176	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
177	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
178	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
179	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
180	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
181	*/
182
183	#ifndef HAVE_STRLCAT
184	size_t
185	strlcat(char dst, const char src, size_t siz)
186	{
187	char *d = dst;
188	const char *s = src;
189	size_t n = siz, dlen;
190
191	while (n-- != 0 && *d != '\0')
192	d++;
193
194	dlen = d - dst;
195	n = siz - dlen;
196
197	if (n == 0)
198	return dlen + strlen(s);
199
200	while (*s != '\0')
201	{
202	if (n != 1)
203	{
204	d++ = s;
205	n--;
206	}
207
208	s++;
209	}
210
211	*d = '\0';
212	return dlen + (s - src); /* count does not include NUL */
213	}
214	#endif
215
216	#ifndef HAVE_STRLCPY
217	size_t
218	strlcpy(char dst, const char src, size_t siz)
219	{
220	char *d = dst;
221	const char *s = src;
222	size_t n = siz;
223
224	/* Copy as many bytes as will fit */
225	if (n != 0 && --n != 0)
226	{
227	do
228	{
229	if ((d++ = s++) == 0)
230	break;
231	} while (--n != 0);
232	}
233
234	/* Not enough room in dst, add NUL and traverse rest of src */
235	if (n == 0)
236	{
237	if (siz != 0)
238	d = '\0'; / NUL-terminate dst */
239	while (*s++)
240	;
241	}
242
243	return s - src - 1; /* count does not include NUL */
244	}
245	#endif