1 /*- 2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2017 Dag-Erling Smørgrav 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by ThinkSec AS and 7 * Network Associates Laboratories, the Security Research Division of 8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 9 * ("CBOSS"), as part of the DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $OpenPAM: pam_getenvlist.c 938 2017-04-30 21:34:42Z des $ 36 */ 37 38 #ifdef HAVE_CONFIG_H 39 # include "config.h" 40 #endif 41 42 #include <stdlib.h> 43 #include <string.h> 44 45 #include <security/pam_appl.h> 46 47 #include "openpam_impl.h" 48 49 /* 50 * XSSO 4.2.1 51 * XSSO 6 page 45 52 * 53 * Returns a list of all the PAM environment variables 54 */ 55 56 char ** 57 pam_getenvlist(pam_handle_t *pamh) 58 { 59 char **envlist; 60 int i; 61 62 ENTER(); 63 envlist = malloc(sizeof(char *) * (pamh->env_count + 1)); 64 if (envlist == NULL) { 65 openpam_log(PAM_LOG_ERROR, "%s", 66 pam_err_text[PAM_BUF_ERR]); 67 RETURNP(NULL); 68 } 69 for (i = 0; i < pamh->env_count; ++i) { 70 if ((envlist[i] = strdup(pamh->env[i])) == NULL) { 71 while (i) { 72 --i; 73 FREE(envlist[i]); 74 } 75 FREE(envlist); 76 openpam_log(PAM_LOG_ERROR, "%s", 77 pam_err_text[PAM_BUF_ERR]); 78 RETURNP(NULL); 79 } 80 } 81 envlist[i] = NULL; 82 RETURNP(envlist); 83 } 84 85 /** 86 * The =pam_getenvlist function returns a copy of the given PAM context's 87 * environment list as a pointer to an array of strings. 88 * The last element in the array is =NULL. 89 * The pointer is suitable for assignment to {Va environ}. 90 * 91 * The array and the strings it lists are allocated using =malloc, and 92 * should be released using =free after use: 93 * 94 * char **envlist, **env; 95 * 96 * envlist = environ; 97 * environ = pam_getenvlist(pamh); 98 * \/\* do something nifty \*\/ 99 * for (env = environ; *env != NULL; env++) 100 * free(*env); 101 * free(environ); 102 * environ = envlist; 103 * 104 * >environ 7 105 * >pam_getenv 106 * >pam_putenv 107 * >pam_setenv 108 */ 109