diff options
Diffstat (limited to 'lib/openpam_set_option.c')
| -rw-r--r-- | lib/openpam_set_option.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/lib/openpam_set_option.c b/lib/openpam_set_option.c new file mode 100644 index 0000000..57161d3 --- /dev/null +++ b/lib/openpam_set_option.c @@ -0,0 +1,119 @@ +/*- + * 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: openpam_set_option.c 408 2007-12-21 11:36:24Z des $ + */ + +#include <sys/param.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <security/pam_appl.h> +#include <security/openpam.h> + +#include "openpam_impl.h" + +/* + * OpenPAM extension + * + * Sets the value of a module option + */ + +int +openpam_set_option(pam_handle_t *pamh, + const char *option, + const char *value) +{ + pam_chain_t *cur; + char *opt, **optv; + size_t len; + int i; + + ENTERS(option); + if (pamh == NULL || pamh->current == NULL || option == NULL) + RETURNC(PAM_SYSTEM_ERR); + cur = pamh->current; + for (len = 0; option[len] != '\0'; ++len) + if (option[len] == '=') + break; + for (i = 0; i < cur->optc; ++i) { + if (strncmp(cur->optv[i], option, len) == 0 && + (cur->optv[i][len] == '\0' || cur->optv[i][len] == '=')) + break; + } + if (value == NULL) { + /* remove */ + if (i == cur->optc) + RETURNC(PAM_SUCCESS); + for (free(cur->optv[i]); i < cur->optc; ++i) + cur->optv[i] = cur->optv[i + 1]; + cur->optv[i] = NULL; + RETURNC(PAM_SUCCESS); + } + if (asprintf(&opt, "%.*s=%s", (int)len, option, value) < 0) + RETURNC(PAM_BUF_ERR); + if (i == cur->optc) { + /* add */ + optv = realloc(cur->optv, sizeof(char *) * (cur->optc + 2)); + if (optv == NULL) { + FREE(opt); + RETURNC(PAM_BUF_ERR); + } + optv[i] = opt; + optv[i + 1] = NULL; + cur->optv = optv; + ++cur->optc; + } else { + /* replace */ + FREE(cur->optv[i]); + cur->optv[i] = opt; + } + RETURNC(PAM_SUCCESS); +} + +/* + * Error codes: + * + * PAM_SYSTEM_ERR + * PAM_BUF_ERR + */ + +/** + * The =openpam_set_option function sets the specified option in the + * context of the currently executing service module. + * + * >openpam_get_option + */ |
