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 *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:	2883
Committed:	Mon Jan 20 18:17:57 2014 UTC (12 years, 8 months ago) by michael
Content type:	text/x-csrc
File size:	6073 byte(s)
Log Message:	- irc_string.c:has_wildcards(): add support for character escaping
#	User	Rev	Content
1	adx	30	/*
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	knight	31	* $Id$
23	adx	30	*/
24
25	michael	1009	#include "config.h"
26	adx	30	#include "stdinc.h"
27			#include "irc_string.h"
28
29
30	michael	1400	int
31	michael	2883	has_wildcards(const char *str)
32	michael	1400	{
33	michael	2883	const unsigned char p = (const unsigned char )str;
34	michael	1400
35	michael	2883	for (; *p; ++p)
36			{
37			if (*p == '\\')
38			{
39			if (*++p == '\0')
40			return 0;
41			}
42			else if (IsMWildChar(*p))
43	michael	1400	return 1;
44	michael	2883	}
45	michael	1400
46			return 0;
47			}
48
49	adx	30	/*
50			* myctime - This is like standard ctime()-function, but it zaps away
51			* the newline from the end of that string. Also, it takes
52			* the time value as parameter, instead of pointer to it.
53			* Note that it is necessary to copy the string to alternate
54			* buffer (who knows how ctime() implements it, maybe it statically
55			* has newline there and never 'refreshes' it -- zapping that
56			* might break things in other places...)
57			*
58			*
59			* Thu Nov 24 18:22:48 1986
60			*/
61			const char *
62			myctime(time_t value)
63			{
64			static char buf[32];
65			char *p;
66
67	michael	1801	strlcpy(buf, ctime(&value), sizeof(buf));
68	adx	30
69			if ((p = strchr(buf, '\n')) != NULL)
70			*p = '\0';
71			return buf;
72			}
73
74			/*
75			* strip_tabs(dst, src, length)
76			*
77			* Copies src to dst, while converting all \t (tabs) into spaces.
78			*/
79			void
80			strip_tabs(char dest, const char src, size_t len)
81			{
82			char *d = dest;
83
84			/* Sanity check; we don't want anything nasty... */
85			assert(dest != NULL);
86			assert(src != NULL);
87			assert(len > 0);
88
89			for (; --len && *src; ++src)
90			d++ = src == '\t' ? ' ' : *src;
91
92			d = '\0'; / NUL terminate, thanks and goodbye */
93			}
94
95			/*
96			* strtoken - walk through a string of tokens, using a set of separators
97			* argv 9/90
98			*
99			*/
100			#ifndef HAVE_STRTOK_R
101
102			char *
103			strtoken(char** save, char* str, const char* fs)
104			{
105			char* pos = save; / keep last position across calls */
106			char* tmp;
107
108			if (str)
109			pos = str; /* new string scan */
110
111			while (pos && pos && strchr(fs, pos) != NULL)
112			++pos; /* skip leading separators */
113
114			if (!pos \|\| !*pos)
115			return (pos = save = NULL); / string contains only sep's */
116
117			tmp = pos; /* now, keep position of the token */
118
119			while (pos && strchr(fs, pos) == NULL)
120			++pos; /* skip content of the token */
121
122			if (*pos)
123			pos++ = '\0'; / remove first sep after the token */
124			else
125			pos = NULL; /* end of string */
126
127			*save = pos;
128			return tmp;
129			}
130			#endif /* !HAVE_STRTOK_R */
131
132	michael	978	/* libio_basename()
133	adx	30	*
134			* input - i.e. "/usr/local/ircd/modules/m_whois.so"
135			* output - i.e. "m_whois.so"
136			* side effects - this will be overwritten on subsequent calls
137			*/
138	michael	978	const char *
139			libio_basename(const char *path)
140	adx	30	{
141	michael	978	const char *s;
142	adx	30
143			if ((s = strrchr(path, '/')) == NULL)
144			s = path;
145			else
146			s++;
147
148			return s;
149			}
150
151			/*
152			* strlcat and strlcpy were ripped from openssh 2.5.1p2
153			* They had the following Copyright info:
154			*
155			*
156			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
157			* All rights reserved.
158			*
159			* Redistribution and use in source and binary forms, with or without
160			* modification, are permitted provided that the following conditions
161			* are met:
162			* 1. Redistributions of source code must retain the above copyright
163			* notice, this list of conditions and the following disclaimer.
164			* 2. Redistributions in binary form must reproduce the above copyright
165			* notice, this list of conditions and the following disclaimer in the
166			* documentation and/or other materials provided with the distribution.
167			* 3. The name of the author may not be used to endorse or promote products
168			* derived from this software without specific prior written permission.
169			*
170			* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
171			* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
172			* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
173			* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
174			* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
175			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
176			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
177			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
178			* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
179			* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
180			*/
181
182			#ifndef HAVE_STRLCAT
183			size_t
184			strlcat(char dst, const char src, size_t siz)
185			{
186			char *d = dst;
187			const char *s = src;
188			size_t n = siz, dlen;
189
190			while (n-- != 0 && *d != '\0')
191			d++;
192
193			dlen = d - dst;
194			n = siz - dlen;
195
196			if (n == 0)
197	michael	1122	return dlen + strlen(s);
198	adx	30
199			while (*s != '\0')
200			{
201			if (n != 1)
202			{
203			d++ = s;
204			n--;
205			}
206
207			s++;
208			}
209
210			*d = '\0';
211			return dlen + (s - src); /* count does not include NUL */
212			}
213			#endif
214
215			#ifndef HAVE_STRLCPY
216			size_t
217			strlcpy(char dst, const char src, size_t siz)
218			{
219			char *d = dst;
220			const char *s = src;
221			size_t n = siz;
222
223			/* Copy as many bytes as will fit */
224			if (n != 0 && --n != 0)
225			{
226			do
227			{
228			if ((d++ = s++) == 0)
229			break;
230			} while (--n != 0);
231			}
232
233			/* Not enough room in dst, add NUL and traverse rest of src */
234			if (n == 0)
235			{
236			if (siz != 0)
237			d = '\0'; / NUL-terminate dst */
238			while (*s++)
239			;
240			}
241
242			return s - src - 1; /* count does not include NUL */
243			}
244			#endif