trunk/src/compat.c

/*
 *  Copyright (c) 2002 Andy Smith
 *  Copyright (c) 2014-2016 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 <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:	7005
Committed:	Fri Jan 1 00:06:56 2016 UTC (9 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	3462 byte(s)
Log Message:	- Update copyright years
#	Content
1	/*
2	* Copyright (c) 2002 Andy Smith
3	* Copyright (c) 2014-2016 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
21	#include "setup.h"
22
23	#include <string.h>
24
25	#include "compat.h"
26
27	/*
28	* strlcat and strlcpy were ripped from openssh 2.5.1p2
29	* They had the following Copyright info:
30	*
31	*
32	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
33	* All rights reserved.
34	*
35	* Redistribution and use in source and binary forms, with or without
36	* modification, are permitted provided that the following conditions
37	* are met:
38	* 1. Redistributions of source code must retain the above copyright
39	* notice, this list of conditions and the following disclaimer.
40	* 2. Redistributions in binary form must reproduce the above copyright
41	* notice, this list of conditions and the following disclaimer in the
42	* documentation and/or other materials provided with the distribution.
43	* 3. The name of the author may not be used to endorse or promote products
44	* derived from this software without specific prior written permission.
45	*
46	* THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
47	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
48	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
49	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
50	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
51	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
52	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
53	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
54	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
55	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56	*/
57
58	#ifndef HAVE_STRLCAT
59	size_t
60	strlcat(char dst, const char src, size_t siz)
61	{
62	char *d = dst;
63	const char *s = src;
64	size_t n = siz, dlen;
65
66	while (n-- != 0 && *d != '\0')
67	d++;
68
69	dlen = d - dst;
70	n = siz - dlen;
71
72	if (n == 0)
73	return dlen + strlen(s);
74
75	while (*s != '\0')
76	{
77	if (n != 1)
78	{
79	d++ = s;
80	n--;
81	}
82
83	s++;
84	}
85
86	*d = '\0';
87	return dlen + (s - src); /* count does not include NUL */
88	}
89	#endif
90
91	#ifndef HAVE_STRLCPY
92	size_t
93	strlcpy(char dst, const char src, size_t siz)
94	{
95	char *d = dst;
96	const char *s = src;
97	size_t n = siz;
98
99	/* Copy as many bytes as will fit */
100	if (n != 0 && --n != 0)
101	{
102	do
103	{
104	if ((d++ = s++) == 0)
105	break;
106	} while (--n != 0);
107	}
108
109	/* Not enough room in dst, add NUL and traverse rest of src */
110	if (n == 0)
111	{
112	if (siz != 0)
113	d = '\0'; / NUL-terminate dst */
114	while (*s++)
115	;
116	}
117
118	return s - src - 1; /* count does not include NUL */
119	}
120	#endif