lib/gssapi/krb5/copy_ccache.c

   1 /*
   2  * Copyright (c) 2000 - 2001, 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 #if 0
  37 OM_uint32
  38 gss_krb5_copy_ccache(OM_uint32 *minor_status,
  39                      krb5_context context,
  40                      gss_cred_id_t cred,
  41                      krb5_ccache out)
  42 {
  43     krb5_error_code kret;
  44
  45     HEIMDAL_MUTEX_lock(&cred->cred_id_mutex);
  46
  47     if (cred->ccache == NULL) {
  48         HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
  49         *minor_status = EINVAL;
  50         return GSS_S_FAILURE;
  51     }
  52
  53     kret = krb5_cc_copy_cache(context, cred->ccache, out);
  54     HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
  55     if (kret) {
  56         *minor_status = kret;
  57         return GSS_S_FAILURE;
  58     }
  59     *minor_status = 0;
  60     return GSS_S_COMPLETE;
  61 }
  62 #endif
  63
  64
  65 /*
  66  * WARNING: Takes ownership of `id'.  Because MEMORY:anonymous is now not
  67  * linked into to the MEMORY ccache namespace, we can't use krb5_cc_resolve()
  68  * with the cache's name anymore.  We need a krb5_cc_clone() or some such, with
  69  * attendant new method for ccops.  Or we could create a new MEMORY:anonymous
  70  * ccache and copy all the creds from `id' into it.  But we know callers of
  71  * this function don't need `id' after calling it, so for now we'll just take
  72  * ownershipd of it.
  73  */
  74 OM_uint32
  75 _gsskrb5_krb5_import_cred(OM_uint32 *minor_status,
  76                           krb5_ccache *id,
  77                           krb5_principal keytab_principal,
  78                           krb5_keytab keytab,
  79                           gss_cred_id_t *cred)
  80 {
  81     krb5_context context;
  82     krb5_error_code kret;
  83     gsskrb5_cred handle;
  84     OM_uint32 ret;
  85     int id_given = (*id != NULL);
  86
  87     *cred = NULL;
  88
  89     GSSAPI_KRB5_INIT (&context);
  90
  91     handle = calloc(1, sizeof(*handle));
  92     if (handle == NULL) {
  93         _gsskrb5_clear_status ();
  94         *minor_status = ENOMEM;
  95         return (GSS_S_FAILURE);
  96     }
  97     HEIMDAL_MUTEX_init(&handle->cred_id_mutex);
  98
  99     handle->usage = 0;
 100     handle->destination_realm = NULL;
 101
 102     if (*id) {
 103         time_t now;
 104         OM_uint32 left;
 105
 106         handle->usage |= GSS_C_INITIATE;
 107
 108         kret = krb5_cc_get_principal(context, *id,
 109                                      &handle->principal);
 110         if (kret) {
 111             free(handle);
 112             *minor_status = kret;
 113             return GSS_S_FAILURE;
 114         }
 115
 116         if (keytab_principal) {
 117             krb5_boolean match;
 118
 119             match = krb5_principal_compare(context,
 120                                            handle->principal,
 121                                            keytab_principal);
 122             if (match == FALSE) {
 123                 krb5_free_principal(context, handle->principal);
 124                 free(handle);
 125                 _gsskrb5_clear_status ();
 126                 *minor_status = EINVAL;
 127                 return GSS_S_FAILURE;
 128             }
 129         }
 130
 131         krb5_timeofday(context, &now);
 132         ret = __gsskrb5_ccache_lifetime(minor_status,
 133                                         context,
 134                                         *id,
 135                                         handle->principal,
 136                                         &left);
 137         if (ret != GSS_S_COMPLETE) {
 138             krb5_free_principal(context, handle->principal);
 139             free(handle);
 140             return ret;
 141         }
 142         handle->endtime = now + left;
 143
 144         handle->ccache = *id;
 145         *id = NULL;
 146     }
 147
 148
 149     if (keytab) {
 150         char *str;
 151
 152         handle->usage |= GSS_C_ACCEPT;
 153
 154         if (keytab_principal && handle->principal == NULL) {
 155             kret = krb5_copy_principal(context,
 156                                        keytab_principal,
 157                                        &handle->principal);
 158             if (kret)
 159                 goto out;
 160         }
 161
 162         kret = krb5_kt_get_full_name(context, keytab, &str);
 163         if (kret)
 164             goto out;
 165
 166         kret = krb5_kt_resolve(context, str, &handle->keytab);
 167         free(str);
 168         if (kret)
 169             goto out;
 170     }
 171
 172
 173     if (id_given || keytab) {
 174         ret = gss_create_empty_oid_set(minor_status, &handle->mechanisms);
 175         if (ret == GSS_S_COMPLETE)
 176             ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
 177                                          &handle->mechanisms);
 178         if (ret != GSS_S_COMPLETE) {
 179             kret = *minor_status;
 180             goto out;
 181         }
 182     }
 183
 184     *minor_status = 0;
 185     *cred = (gss_cred_id_t)handle;
 186     return GSS_S_COMPLETE;
 187
 188 out:
 189     gss_release_oid_set(minor_status, &handle->mechanisms);
 190     if (handle->ccache)
 191         krb5_cc_close(context, handle->ccache);
 192     if (handle->keytab)
 193         krb5_kt_close(context, handle->keytab);
 194     if (handle->principal)
 195         krb5_free_principal(context, handle->principal);
 196     HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex);
 197     free(handle);
 198     *minor_status = kret;
 199     return GSS_S_FAILURE;
 200 }