|
1 |
| -/* Safe string copying and concatenation |
2 |
| - * These routines are originally distributed in two separate files. I have |
3 |
| - * copied the files verbatim in this single source file, including all comments. |
4 |
| - * The only change is that the second set of include files is commented out |
5 |
| - * (there is no need to include the same files twice). |
6 |
| - */ |
7 |
| - |
8 |
| -#include "lstring.h" |
9 |
| - |
10 |
| -#if !defined HAVE_SAFESTR |
11 |
| - |
12 |
| -/* $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $ */ |
13 |
| - |
14 |
| -/* |
15 |
| - * Copyright (c) 1998 Todd C. Miller <[email protected]> |
16 |
| - * |
17 |
| - * Permission to use, copy, modify, and distribute this software for any |
18 |
| - * purpose with or without fee is hereby granted, provided that the above |
19 |
| - * copyright notice and this permission notice appear in all copies. |
20 |
| - * |
21 |
| - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
22 |
| - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
23 |
| - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
24 |
| - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
25 |
| - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
26 |
| - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
27 |
| - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
28 |
| - */ |
29 |
| - |
30 |
| -/* |
31 |
| - #include <sys/types.h> already included through lstring.h |
32 |
| - */ |
33 |
| -#include <string.h> /* for strlen() */ |
34 |
| - |
35 |
| -/* |
36 |
| - * Copy src to string dst of size siz. At most siz-1 characters |
37 |
| - * will be copied. Always NUL terminates (unless siz == 0). |
38 |
| - * Returns strlen(src); if retval >= siz, truncation occurred. |
39 |
| - */ |
40 |
| -size_t |
41 |
| -strlcpy(char *dst, const char *src, size_t siz) |
42 |
| -{ |
43 |
| - char *d = dst; |
44 |
| - const char *s = src; |
45 |
| - size_t n = siz; |
46 |
| - |
47 |
| - /* Copy as many bytes as will fit */ |
48 |
| - if (n != 0 && --n != 0) { |
49 |
| - do { |
50 |
| - if ((*d++ = *s++) == 0) |
51 |
| - break; |
52 |
| - } while (--n != 0); |
53 |
| - } |
54 |
| - |
55 |
| - /* Not enough room in dst, add NUL and traverse rest of src */ |
56 |
| - if (n == 0) { |
57 |
| - if (siz != 0) |
58 |
| - *d = '\0'; /* NUL-terminate dst */ |
59 |
| - while (*s++) |
60 |
| - ; |
61 |
| - } |
62 |
| - |
63 |
| - return(s - src - 1); /* count does not include NUL */ |
64 |
| -} |
65 |
| - |
66 |
| -/* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */ |
67 |
| - |
68 |
| -/* |
69 |
| - * Copyright (c) 1998 Todd C. Miller <[email protected]> |
70 |
| - * |
71 |
| - * Permission to use, copy, modify, and distribute this software for any |
72 |
| - * purpose with or without fee is hereby granted, provided that the above |
73 |
| - * copyright notice and this permission notice appear in all copies. |
74 |
| - * |
75 |
| - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
76 |
| - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
77 |
| - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
78 |
| - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
79 |
| - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
80 |
| - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
81 |
| - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
82 |
| - */ |
83 |
| - |
84 |
| -/* |
85 |
| - #include <sys/types.h> already included |
86 |
| - #include <string.h> already included |
87 |
| -*/ |
88 |
| - |
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 |
| -{ |
99 |
| - char *d = dst; |
100 |
| - const char *s = src; |
101 |
| - size_t n = siz; |
102 |
| - size_t dlen; |
103 |
| - |
104 |
| - /* Find the end of dst and adjust bytes left but don't go past end */ |
105 |
| - while (n-- != 0 && *d != '\0') |
106 |
| - d++; |
107 |
| - dlen = d - dst; |
108 |
| - n = siz - dlen; |
109 |
| - |
110 |
| - if (n == 0) |
111 |
| - return(dlen + strlen(s)); |
112 |
| - while (*s != '\0') { |
113 |
| - if (n != 1) { |
114 |
| - *d++ = *s; |
115 |
| - n--; |
116 |
| - } |
117 |
| - s++; |
118 |
| - } |
119 |
| - *d = '\0'; |
120 |
| - |
121 |
| - return(dlen + (s - src)); /* count does not include NUL */ |
122 |
| -} |
123 |
| - |
124 |
| -#endif /* #if !defined HAVE_SAFESTR */ |
| 1 | +/* Safe string copying and concatenation |
| 2 | + * These routines are originally distributed in two separate files. I have |
| 3 | + * copied the files verbatim in this single source file, including all comments. |
| 4 | + * The only change is that the second set of include files is commented out |
| 5 | + * (there is no need to include the same files twice). |
| 6 | + */ |
| 7 | + |
| 8 | +#include "lstring.h" |
| 9 | + |
| 10 | +#if !defined HAVE_SAFESTR && !defined __APPLE__ |
| 11 | + |
| 12 | +/* $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $ */ |
| 13 | + |
| 14 | +/* |
| 15 | + * Copyright (c) 1998 Todd C. Miller <[email protected]> |
| 16 | + * |
| 17 | + * Permission to use, copy, modify, and distribute this software for any |
| 18 | + * purpose with or without fee is hereby granted, provided that the above |
| 19 | + * copyright notice and this permission notice appear in all copies. |
| 20 | + * |
| 21 | + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 22 | + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 24 | + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 25 | + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 26 | + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 27 | + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 28 | + */ |
| 29 | + |
| 30 | +/* |
| 31 | + #include <sys/types.h> already included through lstring.h |
| 32 | + */ |
| 33 | +#include <string.h> /* for strlen() */ |
| 34 | + |
| 35 | +/* |
| 36 | + * Copy src to string dst of size siz. At most siz-1 characters |
| 37 | + * will be copied. Always NUL terminates (unless siz == 0). |
| 38 | + * Returns strlen(src); if retval >= siz, truncation occurred. |
| 39 | + */ |
| 40 | +size_t |
| 41 | +strlcpy(char *dst, const char *src, size_t siz) |
| 42 | +{ |
| 43 | + char *d = dst; |
| 44 | + const char *s = src; |
| 45 | + size_t n = siz; |
| 46 | + |
| 47 | + /* Copy as many bytes as will fit */ |
| 48 | + if (n != 0 && --n != 0) { |
| 49 | + do { |
| 50 | + if ((*d++ = *s++) == 0) |
| 51 | + break; |
| 52 | + } while (--n != 0); |
| 53 | + } |
| 54 | + |
| 55 | + /* Not enough room in dst, add NUL and traverse rest of src */ |
| 56 | + if (n == 0) { |
| 57 | + if (siz != 0) |
| 58 | + *d = '\0'; /* NUL-terminate dst */ |
| 59 | + while (*s++) |
| 60 | + ; |
| 61 | + } |
| 62 | + |
| 63 | + return(s - src - 1); /* count does not include NUL */ |
| 64 | +} |
| 65 | + |
| 66 | +/* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */ |
| 67 | + |
| 68 | +/* |
| 69 | + * Copyright (c) 1998 Todd C. Miller <[email protected]> |
| 70 | + * |
| 71 | + * Permission to use, copy, modify, and distribute this software for any |
| 72 | + * purpose with or without fee is hereby granted, provided that the above |
| 73 | + * copyright notice and this permission notice appear in all copies. |
| 74 | + * |
| 75 | + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 76 | + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 77 | + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 78 | + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 79 | + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 80 | + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 81 | + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 82 | + */ |
| 83 | + |
| 84 | +/* |
| 85 | + #include <sys/types.h> already included |
| 86 | + #include <string.h> already included |
| 87 | +*/ |
| 88 | + |
| 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 | +{ |
| 99 | + char *d = dst; |
| 100 | + const char *s = src; |
| 101 | + size_t n = siz; |
| 102 | + size_t dlen; |
| 103 | + |
| 104 | + /* Find the end of dst and adjust bytes left but don't go past end */ |
| 105 | + while (n-- != 0 && *d != '\0') |
| 106 | + d++; |
| 107 | + dlen = d - dst; |
| 108 | + n = siz - dlen; |
| 109 | + |
| 110 | + if (n == 0) |
| 111 | + return(dlen + strlen(s)); |
| 112 | + while (*s != '\0') { |
| 113 | + if (n != 1) { |
| 114 | + *d++ = *s; |
| 115 | + n--; |
| 116 | + } |
| 117 | + s++; |
| 118 | + } |
| 119 | + *d = '\0'; |
| 120 | + |
| 121 | + return(dlen + (s - src)); /* count does not include NUL */ |
| 122 | +} |
| 123 | + |
| 124 | +#endif /* #if !defined HAVE_SAFESTR */ |
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