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/*-
* Copyright (c) 2002 Networks Associates Technology, Inc.
* 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.
*
* $P4: //depot/projects/openpam/lib/openpam_set_option.c#6 $
*/
#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;
ENTER();
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 ((opt = malloc(len + strlen(value) + 2)) == NULL)
RETURNC(PAM_BUF_ERR);
sprintf(opt, "%.*s=%s", (int)len, option, value);
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);
}
/*
* NOLIST
*
* 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.
*/
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