lib/gssapi/krb5/import_sec_context.c

   1 /*
   2  * Copyright (c) 1999 - 2000 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
  39 gss_import_sec_context (
  40     OM_uint32 * minor_status,
  41     const gss_buffer_t interprocess_token,
  42     gss_ctx_id_t * context_handle
  43     )
  44 {
  45     OM_uint32 ret = GSS_S_FAILURE;
  46     krb5_error_code kret;
  47     krb5_storage *sp;
  48     krb5_auth_context ac;
  49     krb5_address local, remote;
  50     krb5_address *localp, *remotep;
  51     krb5_data data;
  52     gss_buffer_desc buffer;
  53     krb5_keyblock keyblock;
  54     int32_t tmp;
  55     int32_t flags;
  56
  57     gssapi_krb5_init ();
  58
  59     sp = krb5_storage_from_mem (interprocess_token->value,
  60                                 interprocess_token->length);
  61     if (sp == NULL) {
  62         *minor_status = ENOMEM;
  63         return GSS_S_FAILURE;
  64     }
  65
  66     *context_handle = malloc(sizeof(**context_handle));
  67     if (*context_handle == NULL) {
  68         *minor_status = ENOMEM;
  69         krb5_storage_free (sp);
  70         return GSS_S_FAILURE;
  71     }
  72
  73     kret = krb5_auth_con_init (gssapi_krb5_context,
  74                                &(*context_handle)->auth_context);
  75     if (kret) {
  76         *minor_status = kret;
  77         ret = GSS_S_FAILURE;
  78         goto failure;
  79     }
  80
  81     /* flags */
  82
  83     krb5_ret_int32 (sp, &flags);
  84
  85     /* retrieve the auth context */
  86
  87     ac = (*context_handle)->auth_context;
  88     krb5_ret_int32 (sp, &ac->flags);
  89     if (flags & SC_LOCAL_ADDRESS)
  90         krb5_ret_address (sp, localp = &local);
  91     else
  92         localp = NULL;
  93     if (flags & SC_REMOTE_ADDRESS)
  94         krb5_ret_address (sp, remotep  = &remote);
  95     else
  96         remotep = NULL;
  97     krb5_auth_con_setaddrs (gssapi_krb5_context, ac, localp, remotep);
  98     if (localp)
  99         krb5_free_address (gssapi_krb5_context, localp);
 100     if (remotep)
 101         krb5_free_address (gssapi_krb5_context, remotep);
 102     krb5_ret_int16 (sp, &ac->local_port);
 103     krb5_ret_int16 (sp, &ac->remote_port);
 104     if (flags & SC_KEYBLOCK) {
 105         krb5_ret_keyblock (sp, &keyblock);
 106         krb5_auth_con_setkey (gssapi_krb5_context, ac, &keyblock);
 107         krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock);
 108     }
 109     if (flags & SC_LOCAL_SUBKEY) {
 110         krb5_ret_keyblock (sp, &keyblock);
 111         krb5_auth_con_setlocalsubkey (gssapi_krb5_context, ac, &keyblock);
 112         krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock);
 113     }
 114     if (flags & SC_REMOTE_SUBKEY) {
 115         krb5_ret_keyblock (sp, &keyblock);
 116         krb5_auth_con_setremotesubkey (gssapi_krb5_context, ac, &keyblock);
 117         krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock);
 118     }
 119     krb5_ret_int32 (sp, &ac->local_seqnumber);
 120     krb5_ret_int32 (sp, &ac->remote_seqnumber);
 121
 122 #if 0
 123     {
 124             size_t sz;
 125
 126             krb5_ret_data (sp, &data);
 127             ac->authenticator = malloc (sizeof (*ac->authenticator));
 128             if (ac->authenticator == NULL) {
 129                 *minor_status = ENOMEM;
 130                 ret = GSS_S_FAILURE;
 131                 goto failure;
 132             }
 133
 134             kret = decode_Authenticator (data.data, data.length,
 135                                          ac->authenticator, &sz);
 136             krb5_data_free (&data);
 137             if (kret) {
 138                 *minor_status = kret;
 139                 ret = GSS_S_FAILURE;
 140                 goto failure;
 141             }
 142     }
 143 #endif
 144
 145     krb5_ret_int32 (sp, &tmp);
 146     ac->keytype = tmp;
 147     krb5_ret_int32 (sp, &tmp);
 148     ac->cksumtype = tmp;
 149
 150     /* names */
 151
 152     krb5_ret_data (sp, &data);
 153     buffer.value  = data.data;
 154     buffer.length = data.length;
 155
 156     gss_import_name (minor_status, &buffer, GSS_C_NO_OID,
 157                      &(*context_handle)->source);
 158     krb5_data_free (&data);
 159
 160     krb5_ret_data (sp, &data);
 161     buffer.value  = data.data;
 162     buffer.length = data.length;
 163
 164     gss_import_name (minor_status, &buffer, GSS_C_NO_OID,
 165                      &(*context_handle)->target);
 166     krb5_data_free (&data);
 167
 168     krb5_ret_int32 (sp, &tmp);
 169     (*context_handle)->flags = tmp;
 170     krb5_ret_int32 (sp, &tmp);
 171     (*context_handle)->more_flags = tmp;
 172
 173     (*context_handle)->ticket = NULL;
 174
 175     return GSS_S_COMPLETE;
 176
 177 failure:
 178     krb5_auth_con_free (gssapi_krb5_context,
 179                         (*context_handle)->auth_context);
 180     free (*context_handle);
 181     *context_handle = GSS_C_NO_CONTEXT;
 182     return ret;
 183 }