1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25 #include <stdlib.h>
26 #include <string.h>
27 #include <stdio.h>
28 #include <sys/types.h>
29 #include <env.h>
30
31 static const char *token = ":";
32
33 void
build_env_list(Elist ** list,const char * env)34 build_env_list(Elist **list, const char *env)
35 {
36 char *envstr;
37 char *tok;
38 char *lasts;
39
40 if ((envstr = getenv(env)) == NULL)
41 return;
42 envstr = strdup(envstr);
43 tok = strtok_r(envstr, token, &lasts);
44 while (tok) {
45 Elist *lp;
46 if ((lp = (Elist *)malloc(sizeof (Elist))) == NULL) {
47 (void) printf("build_list: malloc failed\n");
48 exit(1);
49 }
50 lp->l_libname = strdup(tok);
51 lp->l_next = *list;
52 *list = lp;
53 tok = strtok_r(NULL, token, &lasts);
54 }
55 free(envstr);
56 }
57
58
59 Elist *
check_list(Elist * list,const char * str)60 check_list(Elist *list, const char *str)
61 {
62 const char *basestr;
63
64 if (list == NULL)
65 return (NULL);
66
67 /*
68 * Is this a basename or a relative path name
69 */
70 if ((basestr = strrchr(str, '/')) != NULL)
71 basestr++;
72 else
73 basestr = str;
74
75
76 for (; list; list = list->l_next) {
77 if (strchr(list->l_libname, '/') == NULL) {
78 if (strcmp(basestr, list->l_libname) == 0)
79 return (list);
80 } else {
81 if (strcmp(str, list->l_libname) == 0)
82 return (list);
83 }
84 }
85 return (NULL);
86 }
87
88 char *
checkenv(const char * env)89 checkenv(const char *env)
90 {
91 char *envstr;
92 if ((envstr = getenv(env)) == NULL)
93 return (NULL);
94 while (*envstr == ' ')
95 envstr++;
96 if (*envstr == '\0')
97 return (NULL);
98 return (envstr);
99 }
100