/src/ntp-dev/libntp/strl_obsd.c

Source (jump to first uncovered line)
/* 
 * Why use strlcpy()/strlcat() instead of standard strncpy()/strncat()?
 * To reduce likelihood of bugs and avoid wasteful zero fills.  See:
 * http://www.gratisoft.us/todd/papers/strlcpy.html
 */

/*  $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $  */

/*
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <config.h>   /* + marks local changes */
#ifdef HAVE_SYS_TYPES_H   /* + */
#include <sys/types.h>
#endif        /* + */
#include <string.h>

#include "ntp_stdlib.h"   /* + strlcpy, strlcat prototypes */

#ifndef HAVE_STRLCPY    /* + */
/*
 * Copy src to string dst of size siz.  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz == 0).
 * Returns strlen(src); if retval >= siz, truncation occurred.
 */
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) {
    while (--n != 0) {
      if ((*d++ = *s++) == '\0')
        break;
    }
  }

  /* 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        /* + */


/*  $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $  */

/*
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* #include <sys/types.h> */  /* + */
/* #include <string.h> */ /* + */

#ifndef HAVE_STRLCAT    /* + */
/*
 * Appends src to string dst of size siz (unlike strncat, siz is the
 * full size of dst, not space left).  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
 * If retval >= siz, truncation occurred.
 */
size_t
strlcat(char *dst, const char *src, size_t siz)
{
  char *d = dst;
  const char *s = src;
  size_t n = siz;
  size_t dlen;

  /* Find the end of dst and adjust bytes left but don't go past end */
  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        /* + */

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Why use strlcpy()/strlcat() instead of standard strncpy()/strncat()?
3		* To reduce likelihood of bugs and avoid wasteful zero fills. See:
4		* http://www.gratisoft.us/todd/papers/strlcpy.html
5		*/
6
7		/* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */
8
9		/*
10		* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
11		*
12		* Permission to use, copy, modify, and distribute this software for any
13		* purpose with or without fee is hereby granted, provided that the above
14		* copyright notice and this permission notice appear in all copies.
15		*
16		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
17		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
18		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
19		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
21		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
22		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23		*/
24
25		#include <config.h> /* + marks local changes */
26		#ifdef HAVE_SYS_TYPES_H /* + */
27		#include <sys/types.h>
28		#endif /* + */
29		#include <string.h>
30
31		#include "ntp_stdlib.h" /* + strlcpy, strlcat prototypes */
32
33		#ifndef HAVE_STRLCPY /* + */
34		/*
35		* Copy src to string dst of size siz. At most siz-1 characters
36		* will be copied. Always NUL terminates (unless siz == 0).
37		* Returns strlen(src); if retval >= siz, truncation occurred.
38		*/
39		size_t
40		strlcpy(char dst, const char src, size_t siz)
41	43	{
42	43	char *d = dst;
43	43	const char *s = src;
44	43	size_t n = siz;
45
46		/* Copy as many bytes as will fit */
47	43	if (n != 0) {
48	583	while (--n != 0) {
49	580	if ((d++ = s++) == '\0')
50	40	break;
51	580	}
52	43	}
53
54		/* Not enough room in dst, add NUL and traverse rest of src */
55	43	if (n == 0) {
56	3	if (siz != 0)
57	3	d = '\0'; / NUL-terminate dst */
58	3	while (*s++)
59	0	;
60	3	}
61
62	43	return(s - src - 1); /* count does not include NUL */
63	43	}
64		#endif /* + */
65
66
67		/* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */
68
69		/*
70		* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
71		*
72		* Permission to use, copy, modify, and distribute this software for any
73		* purpose with or without fee is hereby granted, provided that the above
74		* copyright notice and this permission notice appear in all copies.
75		*
76		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
77		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
78		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
79		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
80		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
81		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
82		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
83		*/
84
85		/* #include <sys/types.h> / / + */
86		/* #include <string.h> / / + */
87
88		#ifndef HAVE_STRLCAT /* + */
89		/*
90		* Appends src to string dst of size siz (unlike strncat, siz is the
91		* full size of dst, not space left). At most siz-1 characters
92		* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
93		* Returns strlen(src) + MIN(siz, strlen(initial dst)).
94		* If retval >= siz, truncation occurred.
95		*/
96		size_t
97		strlcat(char dst, const char src, size_t siz)
98	0	{
99	0	char *d = dst;
100	0	const char *s = src;
101	0	size_t n = siz;
102	0	size_t dlen;
103
104		/* Find the end of dst and adjust bytes left but don't go past end */
105	0	while (n-- != 0 && *d != '\0')
106	0	d++;
107	0	dlen = d - dst;
108	0	n = siz - dlen;
109
110	0	if (n == 0)
111	0	return(dlen + strlen(s));
112	0	while (*s != '\0') {
113	0	if (n != 1) {
114	0	d++ = s;
115	0	n--;
116	0	}
117	0	s++;
118	0	}
119	0	*d = '\0';
120
121	0	return(dlen + (s - src)); /* count does not include NUL */
122	0	}
123		#endif /* + */

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Created: 2023-05-19 06:16