diff options
author | Damien Miller <djm@mindrot.org> | 2000-03-26 12:12:34 +1000 |
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committer | Damien Miller <djm@mindrot.org> | 2000-03-26 12:12:34 +1000 |
commit | 2c9279fa667827384fceb243f890cba1dbe480de (patch) | |
tree | f1fad5fec82c219ca8d73006bb1d4181ad039d92 /bsd-setenv.c | |
parent | a208e57269c44761209434f06f980600a9a82fb9 (diff) |
- Better tests for OpenSSL w/ RSAref
- Added replacement setenv() function from OpenBSD libc. Suggested by
Ben Lindstrom <mouring@pconline.com>
Diffstat (limited to 'bsd-setenv.c')
-rw-r--r-- | bsd-setenv.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/bsd-setenv.c b/bsd-setenv.c new file mode 100644 index 000000000..f5dbd2770 --- /dev/null +++ b/bsd-setenv.c | |||
@@ -0,0 +1,161 @@ | |||
1 | /* | ||
2 | * Copyright (c) 1987 Regents of the University of California. | ||
3 | * All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * 1. Redistributions of source code must retain the above copyright | ||
9 | * notice, this list of conditions and the following disclaimer. | ||
10 | * 2. Redistributions in binary form must reproduce the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer in the | ||
12 | * documentation and/or other materials provided with the distribution. | ||
13 | * 3. All advertising materials mentioning features or use of this software | ||
14 | * must display the following acknowledgement: | ||
15 | * This product includes software developed by the University of | ||
16 | * California, Berkeley and its contributors. | ||
17 | * 4. Neither the name of the University nor the names of its contributors | ||
18 | * may be used to endorse or promote products derived from this software | ||
19 | * without specific prior written permission. | ||
20 | * | ||
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
31 | * SUCH DAMAGE. | ||
32 | */ | ||
33 | |||
34 | #include "config.h" | ||
35 | #ifndef HAVE_SETENV | ||
36 | |||
37 | #if defined(LIBC_SCCS) && !defined(lint) | ||
38 | static char *rcsid = "$OpenBSD: setenv.c,v 1.3 1998/02/02 22:44:53 millert Exp $"; | ||
39 | #endif /* LIBC_SCCS and not lint */ | ||
40 | |||
41 | #include <stdlib.h> | ||
42 | #include <string.h> | ||
43 | |||
44 | /* | ||
45 | * __findenv -- | ||
46 | * Returns pointer to value associated with name, if any, else NULL. | ||
47 | * Sets offset to be the offset of the name/value combination in the | ||
48 | * environmental array, for use by setenv(3) and unsetenv(3). | ||
49 | * Explicitly removes '=' in argument name. | ||
50 | * | ||
51 | * This routine *should* be a static; don't use it. | ||
52 | */ | ||
53 | char * | ||
54 | __findenv(name, offset) | ||
55 | register const char *name; | ||
56 | int *offset; | ||
57 | { | ||
58 | extern char **environ; | ||
59 | register int len, i; | ||
60 | register const char *np; | ||
61 | register char **p, *cp; | ||
62 | |||
63 | if (name == NULL || environ == NULL) | ||
64 | return (NULL); | ||
65 | for (np = name; *np && *np != '='; ++np) | ||
66 | ; | ||
67 | len = np - name; | ||
68 | for (p = environ; (cp = *p) != NULL; ++p) { | ||
69 | for (np = name, i = len; i && *cp; i--) | ||
70 | if (*cp++ != *np++) | ||
71 | break; | ||
72 | if (i == 0 && *cp++ == '=') { | ||
73 | *offset = p - environ; | ||
74 | return (cp); | ||
75 | } | ||
76 | } | ||
77 | return (NULL); | ||
78 | } | ||
79 | |||
80 | /* | ||
81 | * setenv -- | ||
82 | * Set the value of the environmental variable "name" to be | ||
83 | * "value". If rewrite is set, replace any current value. | ||
84 | */ | ||
85 | int | ||
86 | setenv(name, value, rewrite) | ||
87 | register const char *name; | ||
88 | register const char *value; | ||
89 | int rewrite; | ||
90 | { | ||
91 | extern char **environ; | ||
92 | static int alloced; /* if allocated space before */ | ||
93 | register char *C; | ||
94 | int l_value, offset; | ||
95 | char *__findenv(); | ||
96 | |||
97 | if (*value == '=') /* no `=' in value */ | ||
98 | ++value; | ||
99 | l_value = strlen(value); | ||
100 | if ((C = __findenv(name, &offset))) { /* find if already exists */ | ||
101 | if (!rewrite) | ||
102 | return (0); | ||
103 | if (strlen(C) >= l_value) { /* old larger; copy over */ | ||
104 | while ((*C++ = *value++)); | ||
105 | return (0); | ||
106 | } | ||
107 | } else { /* create new slot */ | ||
108 | register int cnt; | ||
109 | register char **P; | ||
110 | |||
111 | for (P = environ, cnt = 0; *P; ++P, ++cnt); | ||
112 | if (alloced) { /* just increase size */ | ||
113 | P = (char **)realloc((void *)environ, | ||
114 | (size_t)(sizeof(char *) * (cnt + 2))); | ||
115 | if (!P) | ||
116 | return (-1); | ||
117 | environ = P; | ||
118 | } | ||
119 | else { /* get new space */ | ||
120 | alloced = 1; /* copy old entries into it */ | ||
121 | P = (char **)malloc((size_t)(sizeof(char *) * | ||
122 | (cnt + 2))); | ||
123 | if (!P) | ||
124 | return (-1); | ||
125 | bcopy(environ, P, cnt * sizeof(char *)); | ||
126 | environ = P; | ||
127 | } | ||
128 | environ[cnt + 1] = NULL; | ||
129 | offset = cnt; | ||
130 | } | ||
131 | for (C = (char *)name; *C && *C != '='; ++C); /* no `=' in name */ | ||
132 | if (!(environ[offset] = /* name + `=' + value */ | ||
133 | malloc((size_t)((int)(C - name) + l_value + 2)))) | ||
134 | return (-1); | ||
135 | for (C = environ[offset]; (*C = *name++) && *C != '='; ++C) | ||
136 | ; | ||
137 | for (*C++ = '='; (*C++ = *value++); ) | ||
138 | ; | ||
139 | return (0); | ||
140 | } | ||
141 | |||
142 | /* | ||
143 | * unsetenv(name) -- | ||
144 | * Delete environmental variable "name". | ||
145 | */ | ||
146 | void | ||
147 | unsetenv(name) | ||
148 | const char *name; | ||
149 | { | ||
150 | extern char **environ; | ||
151 | register char **P; | ||
152 | int offset; | ||
153 | char *__findenv(); | ||
154 | |||
155 | while (__findenv(name, &offset)) /* if set multiple times */ | ||
156 | for (P = &environ[offset];; ++P) | ||
157 | if (!(*P = *(P + 1))) | ||
158 | break; | ||
159 | } | ||
160 | |||
161 | #endif /* HAVE_SETENV */ | ||