lib/gssapi/krb5/inquire_cred.c

   1 /*
   2  * Copyright (c) 1997, 2003 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "gssapi_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 OM_uint32 gss_inquire_cred
  39            (OM_uint32 * minor_status,
  40             const gss_cred_id_t cred_handle,
  41             gss_name_t * name,
  42             OM_uint32 * lifetime,
  43             gss_cred_usage_t * cred_usage,
  44             gss_OID_set * mechanisms
  45            )
  46 {
  47     gss_cred_id_t cred;
  48     OM_uint32 ret;
  49
  50     *minor_status = 0;
  51
  52     if (name)
  53         *name = NULL;
  54     if (mechanisms)
  55         *mechanisms = GSS_C_NO_OID_SET;
  56
  57     if (cred_handle == GSS_C_NO_CREDENTIAL) {
  58         ret = gss_acquire_cred(minor_status,
  59                                GSS_C_NO_NAME,
  60                                GSS_C_INDEFINITE,
  61                                GSS_C_NO_OID_SET,
  62                                GSS_C_BOTH,
  63                                &cred,
  64                                NULL,
  65                                NULL);
  66         if (ret)
  67             return ret;
  68     } else
  69         cred = (gss_cred_id_t)cred_handle;
  70
  71     HEIMDAL_MUTEX_lock(&cred->cred_id_mutex);
  72
  73     if (name != NULL) {
  74         if (cred->principal != NULL) {
  75             ret = gss_duplicate_name(minor_status, cred->principal,
  76                 name);
  77             if (ret)
  78                 goto out;
  79         } else if (cred->usage == GSS_C_ACCEPT) {
  80             *minor_status = krb5_sname_to_principal(gssapi_krb5_context, NULL,
  81                 NULL, KRB5_NT_SRV_HST, name);
  82             if (*minor_status) {
  83                 ret = GSS_S_FAILURE;
  84                 goto out;
  85             }
  86         } else {
  87             *minor_status = krb5_get_default_principal(gssapi_krb5_context,
  88                 name);
  89             if (*minor_status) {
  90                 ret = GSS_S_FAILURE;
  91                 goto out;
  92             }
  93         }
  94     }
  95     if (lifetime != NULL) {
  96         ret = gssapi_lifetime_left(minor_status,
  97                                    cred->lifetime,
  98                                    lifetime);
  99         if (ret)
 100             goto out;
 101     }
 102     if (cred_usage != NULL)
 103         *cred_usage = cred->usage;
 104
 105     if (mechanisms != NULL) {
 106         ret = gss_create_empty_oid_set(minor_status, mechanisms);
 107         if (ret)
 108             goto out;
 109         ret = gss_add_oid_set_member(minor_status,
 110                                      &cred->mechanisms->elements[0],
 111                                      mechanisms);
 112         if (ret)
 113             goto out;
 114     }
 115     ret = GSS_S_COMPLETE;
 116  out:
 117     HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
 118
 119     if (cred_handle == GSS_C_NO_CREDENTIAL)
 120         ret = gss_release_cred(minor_status, &cred);
 121
 122     return ret;
 123 }