source: openpam/trunk/lib/pam_set_item.c @ 232

/*-
 * Copyright (c) 2002,2003 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/pam_set_item.c#20 $
 */

#include <sys/param.h>

#include <stdlib.h>
#include <string.h>

#include <security/pam_appl.h>

#include "openpam_impl.h"

/*
 * XSSO 4.2.1
 * XSSO 6 page 60
 *
 * Set authentication information
 */

int
pam_set_item(pam_handle_t *pamh,
        int item_type,
        const void *item)
{
        void **slot, *tmp;
        size_t nsize, osize;

        ENTERI(item_type);
        if (pamh == NULL)
                RETURNC(PAM_SYSTEM_ERR);
        slot = &pamh->item[item_type];
        osize = nsize = 0;
        switch (item_type) {
        case PAM_SERVICE:
        case PAM_USER:
        case PAM_AUTHTOK:
        case PAM_OLDAUTHTOK:
        case PAM_TTY:
        case PAM_RHOST:
        case PAM_RUSER:
        case PAM_USER_PROMPT:
        case PAM_AUTHTOK_PROMPT:
        case PAM_OLDAUTHTOK_PROMPT:
                if (*slot != NULL)
                        osize = strlen(*slot) + 1;
                if (item != NULL)
                        nsize = strlen(item) + 1;
                break;
        case PAM_REPOSITORY:
                osize = nsize = sizeof(struct pam_repository);
                break;
        case PAM_CONV:
                osize = nsize = sizeof(struct pam_conv);
                break;
        default:
                RETURNC(PAM_SYMBOL_ERR);
        }
        if (*slot != NULL) {
                memset(*slot, 0xd0, osize);
                FREE(*slot);
        }
        if (item != NULL) {
                if ((tmp = malloc(nsize)) == NULL)
                        RETURNC(PAM_BUF_ERR);
                memcpy(tmp, item, nsize);
        } else {
                tmp = NULL;
        }
        *slot = tmp;
        RETURNC(PAM_SUCCESS);
}

/*
 * Error codes:
 *
 *      PAM_SYMBOL_ERR
 *      PAM_SYSTEM_ERR
 *      PAM_BUF_ERR
 */

/**
 * The =pam_set_item function sets the item specified by the =item_type
 * argument to a copy of the object pointed to by the =item argument.
 * The item is stored in the PAM context specified by the =pamh argument.
 * See =pam_get_item for a list of recognized item types.
 */