crypto/heimdal/lib/gssapi/krb5/store_cred.c

   1 /*
   2  * Copyright (c) 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 "gsskrb5_locl.h"
  35
  36 OM_uint32 GSSAPI_CALLCONV
  37 _gsskrb5_store_cred(OM_uint32         *minor_status,
  38                     gss_cred_id_t     input_cred_handle,
  39                     gss_cred_usage_t  cred_usage,
  40                     const gss_OID     desired_mech,
  41                     OM_uint32         overwrite_cred,
  42                     OM_uint32         default_cred,
  43                     gss_OID_set       *elements_stored,
  44                     gss_cred_usage_t  *cred_usage_stored)
  45 {
  46     krb5_context context;
  47     krb5_error_code ret;
  48     gsskrb5_cred cred;
  49     krb5_ccache id;
  50     int destroy = 0;
  51
  52     *minor_status = 0;
  53
  54     if (cred_usage != GSS_C_INITIATE) {
  55         *minor_status = GSS_KRB5_S_G_BAD_USAGE;
  56         return GSS_S_FAILURE;
  57     }
  58
  59     if (gss_oid_equal(desired_mech, GSS_KRB5_MECHANISM) == 0)
  60         return GSS_S_BAD_MECH;
  61
  62     cred = (gsskrb5_cred)input_cred_handle;
  63     if (cred == NULL)
  64         return GSS_S_NO_CRED;
  65
  66     GSSAPI_KRB5_INIT (&context);
  67
  68     HEIMDAL_MUTEX_lock(&cred->cred_id_mutex);
  69     if (cred->usage != cred_usage && cred->usage != GSS_C_BOTH) {
  70         HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
  71         *minor_status = GSS_KRB5_S_G_BAD_USAGE;
  72         return(GSS_S_FAILURE);
  73     }
  74
  75     if (cred->principal == NULL) {
  76         HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
  77         *minor_status = GSS_KRB5_S_KG_TGT_MISSING;
  78         return(GSS_S_FAILURE);
  79     }
  80
  81     /* write out cred to credential cache */
  82
  83     ret = krb5_cc_cache_match(context, cred->principal, &id);
  84     if (ret) {
  85         ret = krb5_cc_new_unique(context, NULL, NULL, &id);
  86         if (ret) {
  87             HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
  88             *minor_status = ret;
  89             return(GSS_S_FAILURE);
  90         }
  91         destroy = 1;
  92     }
  93
  94     ret = krb5_cc_initialize(context, id, cred->principal);
  95     if (ret == 0)
  96         ret = krb5_cc_copy_match_f(context, cred->ccache, id, NULL, NULL, NULL);
  97     if (ret) {
  98         if (destroy)
  99             krb5_cc_destroy(context, id);
 100         else
 101             krb5_cc_close(context, id);
 102         HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
 103         *minor_status = ret;
 104         return(GSS_S_FAILURE);
 105     }
 106
 107     if (default_cred)
 108         krb5_cc_switch(context, id);
 109
 110     krb5_cc_close(context, id);
 111
 112     HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
 113
 114     *minor_status = 0;
 115     return GSS_S_COMPLETE;
 116 }