diff options
Diffstat (limited to 'lib/pam_putenv.c')
| -rw-r--r-- | lib/pam_putenv.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/lib/pam_putenv.c b/lib/pam_putenv.c new file mode 100644 index 0000000..79d6228 --- /dev/null +++ b/lib/pam_putenv.c @@ -0,0 +1,108 @@ +/*- + * Copyright (c) 2002-2003 Networks Associates Technology, Inc. + * Copyright (c) 2004-2007 Dag-Erling Smørgrav + * All rights reserved. + * + * This software was developed for the FreeBSD Project by ThinkSec AS and + * Network Associates Laboratories, the Security Research Division of + * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 + * ("CBOSS"), as part of the DARPA CHATS research program. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: pam_putenv.c 408 2007-12-21 11:36:24Z des $ + */ + +#include <stdlib.h> +#include <string.h> + +#include <security/pam_appl.h> + +#include "openpam_impl.h" + +/* + * XSSO 4.2.1 + * XSSO 6 page 56 + * + * Set the value of an environment variable + */ + +int +pam_putenv(pam_handle_t *pamh, + const char *namevalue) +{ + char **env, *p; + int i; + + ENTER(); + if (pamh == NULL) + RETURNC(PAM_SYSTEM_ERR); + + /* sanity checks */ + if (namevalue == NULL || (p = strchr(namevalue, '=')) == NULL) + RETURNC(PAM_SYSTEM_ERR); + + /* see if the variable is already in the environment */ + if ((i = openpam_findenv(pamh, namevalue, p - namevalue)) >= 0) { + if ((p = strdup(namevalue)) == NULL) + RETURNC(PAM_BUF_ERR); + FREE(pamh->env[i]); + pamh->env[i] = p; + RETURNC(PAM_SUCCESS); + } + + /* grow the environment list if necessary */ + if (pamh->env_count == pamh->env_size) { + env = realloc(pamh->env, + sizeof(char *) * (pamh->env_size * 2 + 1)); + if (env == NULL) + RETURNC(PAM_BUF_ERR); + pamh->env = env; + pamh->env_size = pamh->env_size * 2 + 1; + } + + /* add the variable at the end */ + if ((pamh->env[pamh->env_count] = strdup(namevalue)) == NULL) + RETURNC(PAM_BUF_ERR); + ++pamh->env_count; + RETURNC(PAM_SUCCESS); +} + +/* + * Error codes: + * + * PAM_SYSTEM_ERR + * PAM_BUF_ERR + */ + +/** + * The =pam_putenv function sets a environment variable. + * Its semantics are similar to those of =putenv, but it modifies the PAM + * context's environment list instead of the application's. + * + * >pam_getenv + * >pam_getenvlist + * >pam_setenv + */ |
