source4/heimdal/lib/gssapi/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 "gssapi_locl.h"
  35
  36 RCSID("$Id: copy_ccache.c,v 1.9 2005/10/31 16:02:08 lha Exp $");
  37
  38 OM_uint32
  39 gss_krb5_copy_ccache(OM_uint32 *minor_status,
  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(gssapi_krb5_context, cred->ccache, out);
  54     HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
  55     if (kret) {
  56         *minor_status = kret;
  57         gssapi_krb5_set_error_string ();
  58         return GSS_S_FAILURE;
  59     }
  60     *minor_status = 0;
  61     return GSS_S_COMPLETE;
  62 }
  63
  64
  65 OM_uint32
  66 gss_krb5_import_ccache(OM_uint32 *minor_status,
  67                        krb5_ccache in,
  68                        gss_cred_id_t *cred)
  69 {
  70     krb5_error_code kret;
  71     gss_cred_id_t handle;
  72     OM_uint32 ret;
  73
  74     *cred = NULL;
  75
  76     GSSAPI_KRB5_INIT ();
  77
  78     handle = (gss_cred_id_t)calloc(1, sizeof(*handle));
  79     if (handle == GSS_C_NO_CREDENTIAL) {
  80         gssapi_krb5_clear_status ();
  81         *minor_status = ENOMEM;
  82         return (GSS_S_FAILURE);
  83     }
  84     HEIMDAL_MUTEX_init(&handle->cred_id_mutex);
  85
  86     handle->usage = GSS_C_INITIATE;
  87
  88     kret = krb5_cc_get_principal(gssapi_krb5_context, in, &handle->principal);
  89     if (kret) {
  90         free(handle);
  91         gssapi_krb5_set_error_string ();
  92         *minor_status = kret;
  93         return GSS_S_FAILURE;
  94     }
  95
  96     ret = _gssapi_krb5_ccache_lifetime(minor_status,
  97                                        in,
  98                                        handle->principal,
  99                                        &handle->lifetime);
 100     if (ret != GSS_S_COMPLETE) {
 101         krb5_free_principal(gssapi_krb5_context, handle->principal);
 102         free(handle);
 103         return ret;
 104     }
 105
 106     ret = gss_create_empty_oid_set(minor_status, &handle->mechanisms);
 107     if (ret == GSS_S_COMPLETE)
 108         ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
 109                                      &handle->mechanisms);
 110     if (ret != GSS_S_COMPLETE) {
 111         krb5_free_principal(gssapi_krb5_context, handle->principal);
 112         free(handle);
 113         *minor_status = kret;
 114         return GSS_S_FAILURE;
 115     }
 116
 117     {
 118         const char *type, *name;
 119         char *str;
 120
 121         type = krb5_cc_get_type(gssapi_krb5_context, in);
 122         name = krb5_cc_get_name(gssapi_krb5_context, in);
 123
 124         if (asprintf(&str, "%s:%s", type, name) == -1) {
 125             krb5_set_error_string(gssapi_krb5_context,
 126                                   "malloc - out of memory");
 127             kret = ENOMEM;
 128             goto out;
 129         }
 130
 131         kret = krb5_cc_resolve(gssapi_krb5_context, str, &handle->ccache);
 132         free(str);
 133         if (kret)
 134             goto out;
 135     }
 136
 137     *minor_status = 0;
 138     *cred = handle;
 139     return GSS_S_COMPLETE;
 140
 141 out:
 142     gssapi_krb5_set_error_string ();
 143     if (handle->principal)
 144         krb5_free_principal(gssapi_krb5_context, handle->principal);
 145     HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex);
 146     free(handle);
 147     *minor_status = kret;
 148     return GSS_S_FAILURE;
 149 }
 150
 151
 152 OM_uint32
 153 gsskrb5_extract_authz_data_from_sec_context(OM_uint32 *minor_status,
 154                                             gss_ctx_id_t context_handle,
 155                                             int ad_type,
 156                                             gss_buffer_t ad_data)
 157 {
 158     krb5_error_code ret;
 159     krb5_data data;
 160
 161     ad_data->value = NULL;
 162     ad_data->length = 0;
 163
 164     HEIMDAL_MUTEX_lock(&context_handle->ctx_id_mutex);
 165     if (context_handle->ticket == NULL) {
 166         HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
 167         *minor_status = EINVAL;
 168         return GSS_S_FAILURE;
 169     }
 170
 171     ret = krb5_ticket_get_authorization_data_type(gssapi_krb5_context,
 172                                                   context_handle->ticket,
 173                                                   ad_type,
 174                                                   &data);
 175     HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
 176     if (ret) {
 177         *minor_status = ret;
 178         return GSS_S_FAILURE;
 179     }
 180
 181     ad_data->value = malloc(data.length);
 182     if (ad_data->value == NULL) {
 183         krb5_data_free(&data);
 184         *minor_status = ENOMEM;
 185         return GSS_S_FAILURE;
 186     }
 187
 188     ad_data->length = data.length;
 189     memcpy(ad_data->value, data.data, ad_data->length);
 190     krb5_data_free(&data);
 191
 192     *minor_status = 0;
 193     return GSS_S_COMPLETE;
 194 }
 195
 196 OM_uint32
 197 gsskrb5_extract_authtime_from_sec_context(OM_uint32 *minor_status,
 198                                           gss_ctx_id_t context_handle,
 199                                           time_t *authtime)
 200 {
 201     HEIMDAL_MUTEX_lock(&context_handle->ctx_id_mutex);
 202     if (context_handle->ticket == NULL) {
 203         HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
 204         *minor_status = EINVAL;
 205         return GSS_S_FAILURE;
 206     }
 207
 208     *authtime = context_handle->ticket->ticket.authtime;
 209     HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
 210
 211     *minor_status = 0;
 212     return GSS_S_COMPLETE;
 213 }
 214
 215 OM_uint32 gss_krb5_copy_service_keyblock
 216         (OM_uint32 *minor_status,
 217          gss_ctx_id_t context_handle,
 218          struct EncryptionKey **out)
 219 {
 220     krb5_error_code ret;
 221
 222     HEIMDAL_MUTEX_lock(&context_handle->ctx_id_mutex);
 223     if (context_handle->service_keyblock == NULL) {
 224         HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
 225         *minor_status = EINVAL;
 226         return GSS_S_FAILURE;
 227     }
 228
 229     ret = krb5_copy_keyblock(gssapi_krb5_context,
 230                              context_handle->service_keyblock,
 231                              out);
 232
 233     HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
 234     if (ret) {
 235         *minor_status = ret;
 236         return GSS_S_FAILURE;
 237     }
 238
 239     *minor_status = 0;
 240     return GSS_S_COMPLETE;
 241 }