contrib/openpam/lib/pam_get_data.c

   1 /*-
   2  * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed for the FreeBSD Project by ThinkSec AS and
   6  * Network Associates Laboratories, the Security Research Division of
   7  * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
   8  * ("CBOSS"), as part of the DARPA CHATS research program.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of the author may not be used to endorse or promote
  19  *    products derived from this software without specific prior written
  20  *    permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $P4: //depot/projects/openpam/lib/pam_get_data.c#14 $
  35  */
  36
  37 #include <string.h>
  38
  39 #include <security/pam_appl.h>
  40
  41 #include "openpam_impl.h"
  42
  43 /*
  44  * XSSO 4.2.1
  45  * XSSO 6 page 43
  46  *
  47  * Get module information
  48  */
  49
  50 int
  51 pam_get_data(pam_handle_t *pamh,
  52         const char *module_data_name,
  53         void **data)
  54 {
  55         pam_data_t *dp;
  56
  57         ENTERS(module_data_name);
  58         if (pamh == NULL)
  59                 RETURNC(PAM_SYSTEM_ERR);
  60         for (dp = pamh->module_data; dp != NULL; dp = dp->next) {
  61                 if (strcmp(dp->name, module_data_name) == 0) {
  62                         *data = (void *)dp->data;
  63                         RETURNC(PAM_SUCCESS);
  64                 }
  65         }
  66         RETURNC(PAM_NO_MODULE_DATA);
  67 }
  68
  69 /*
  70  * Error codes:
  71  *
  72  *      PAM_SYSTEM_ERR
  73  *      PAM_NO_MODULE_DATA
  74  */
  75
  76 /**
  77  * The =pam_get_data function looks up the opaque object associated with
  78  * the string specified by the =module_data_name argument, in the PAM
  79  * context specified by the =pamh argument.
  80  * A pointer to the object is stored in the location pointed to by the
  81  * =data argument.
  82  *
  83  * This function and its counterpart =pam_set_data are useful for managing
  84  * data that are meaningful only to a particular service module.
  85  */