120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/*-
|
|
* 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
|
|
*/
|