trunk/src/compat.c

/*
 *  Copyright (c) 2002 Andy Smith
 *  Copyright (c) 2014-2015 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

#include "setup.h"

#include <stdio.h>
#include <string.h>

#include "compat.h"

/*
 * 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:	5351
Committed:	Sun Jan 11 13:24:19 2015 UTC (11 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	3481 byte(s)
Log Message:	- Update license headers
#	User	Rev	Content
1	michael	5052	/*
2	michael	5351	* Copyright (c) 2002 Andy Smith
3			* Copyright (c) 2014-2015 ircd-hybrid development team
4			*
5			* This program is free software; you can redistribute it and/or modify
6			* it under the terms of the GNU General Public License as published by
7			* the Free Software Foundation; either version 2 of the License, or
8			* (at your option) any later version.
9			*
10			* This program is distributed in the hope that it will be useful,
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			* GNU General Public License for more details.
14			*
15			* You should have received a copy of the GNU General Public License
16			* along with this program; if not, write to the Free Software
17			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
18			* USA
19			*/
20	michael	5052
21			#include "setup.h"
22
23			#include <stdio.h>
24	michael	5207	#include <string.h>
25	michael	5052
26			#include "compat.h"
27
28	michael	5064	/*
29			* strlcat and strlcpy were ripped from openssh 2.5.1p2
30			* They had the following Copyright info:
31			*
32			*
33			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
34			* All rights reserved.
35			*
36			* Redistribution and use in source and binary forms, with or without
37			* modification, are permitted provided that the following conditions
38			* are met:
39			* 1. Redistributions of source code must retain the above copyright
40			* notice, this list of conditions and the following disclaimer.
41			* 2. Redistributions in binary form must reproduce the above copyright
42			* notice, this list of conditions and the following disclaimer in the
43			* documentation and/or other materials provided with the distribution.
44			* 3. The name of the author may not be used to endorse or promote products
45			* derived from this software without specific prior written permission.
46			*
47			* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
48			* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
49			* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
50			* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
51			* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
52			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
53			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
54			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
55			* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
56			* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57			*/
58
59			#ifndef HAVE_STRLCAT
60			size_t
61			strlcat(char dst, const char src, size_t siz)
62			{
63			char *d = dst;
64			const char *s = src;
65			size_t n = siz, dlen;
66
67			while (n-- != 0 && *d != '\0')
68			d++;
69
70			dlen = d - dst;
71			n = siz - dlen;
72
73			if (n == 0)
74			return dlen + strlen(s);
75
76			while (*s != '\0')
77			{
78			if (n != 1)
79			{
80			d++ = s;
81			n--;
82			}
83
84			s++;
85			}
86
87			*d = '\0';
88			return dlen + (s - src); /* count does not include NUL */
89			}
90			#endif
91
92			#ifndef HAVE_STRLCPY
93			size_t
94			strlcpy(char dst, const char src, size_t siz)
95			{
96			char *d = dst;
97			const char *s = src;
98			size_t n = siz;
99
100			/* Copy as many bytes as will fit */
101			if (n != 0 && --n != 0)
102			{
103			do
104			{
105			if ((d++ = s++) == 0)
106			break;
107			} while (--n != 0);
108			}
109
110			/* Not enough room in dst, add NUL and traverse rest of src */
111			if (n == 0)
112			{
113			if (siz != 0)
114			d = '\0'; / NUL-terminate dst */
115			while (*s++)
116			;
117			}
118
119			return s - src - 1; /* count does not include NUL */
120			}
121			#endif