Line data    Source code

       1             : /*
       2             :  * Copyright (c) 1999 - 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           0 : _gsskrb5_import_sec_context (
      38             :     OM_uint32 * minor_status,
      39             :     const gss_buffer_t interprocess_token,
      40             :     gss_ctx_id_t * context_handle
      41             :     )
      42             : {
      43           0 :     OM_uint32 ret = GSS_S_FAILURE;
      44           0 :     krb5_context context;
      45           0 :     krb5_error_code kret;
      46           0 :     krb5_storage *sp;
      47           0 :     krb5_auth_context ac;
      48           0 :     krb5_address local, remote;
      49           0 :     krb5_address *localp, *remotep;
      50           0 :     krb5_keyblock keyblock;
      51           0 :     int32_t flags, tmp;
      52           0 :     int64_t tmp64;
      53           0 :     gsskrb5_ctx ctx;
      54             : 
      55           0 :     GSSAPI_KRB5_INIT (&context);
      56             : 
      57           0 :     *context_handle = GSS_C_NO_CONTEXT;
      58             : 
      59           0 :     localp = remotep = NULL;
      60             : 
      61           0 :     sp = krb5_storage_from_mem (interprocess_token->value,
      62             :                                 interprocess_token->length);
      63           0 :     if (sp == NULL) {
      64           0 :         *minor_status = ENOMEM;
      65           0 :         return GSS_S_FAILURE;
      66             :     }
      67             : 
      68           0 :     krb5_storage_set_byteorder(sp, KRB5_STORAGE_BYTEORDER_PACKED);
      69           0 :     krb5_storage_set_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE);
      70             : 
      71           0 :     ctx = calloc(1, sizeof(*ctx));
      72           0 :     if (ctx == NULL) {
      73           0 :         *minor_status = ENOMEM;
      74           0 :         krb5_storage_free (sp);
      75           0 :         return GSS_S_FAILURE;
      76             :     }
      77           0 :     HEIMDAL_MUTEX_init(&ctx->ctx_id_mutex);
      78             : 
      79           0 :     kret = krb5_auth_con_init (context,
      80           0 :                                &ctx->auth_context);
      81           0 :     if (kret) {
      82           0 :         *minor_status = kret;
      83           0 :         ret = GSS_S_FAILURE;
      84           0 :         goto failure;
      85             :     }
      86             : 
      87             :     /* flags */
      88             : 
      89           0 :     *minor_status = 0;
      90             : 
      91           0 :     if (krb5_ret_int32 (sp, &flags) != 0)
      92           0 :         goto failure;
      93             : 
      94             :     /* retrieve the auth context */
      95             : 
      96           0 :     ac = ctx->auth_context;
      97           0 :     if (krb5_ret_int32 (sp, &tmp) != 0)
      98           0 :         goto failure;
      99           0 :     ac->flags = tmp;
     100           0 :     if (flags & SC_LOCAL_ADDRESS) {
     101           0 :         if (krb5_ret_address (sp, localp = &local) != 0)
     102           0 :             goto failure;
     103             :     }
     104             : 
     105           0 :     if (flags & SC_REMOTE_ADDRESS) {
     106           0 :         if (krb5_ret_address (sp, remotep = &remote) != 0)
     107           0 :             goto failure;
     108             :     }
     109             : 
     110           0 :     krb5_auth_con_setaddrs (context, ac, localp, remotep);
     111           0 :     if (localp)
     112           0 :         krb5_free_address (context, localp);
     113           0 :     if (remotep)
     114           0 :         krb5_free_address (context, remotep);
     115           0 :     localp = remotep = NULL;
     116             : 
     117           0 :     if (krb5_ret_int16 (sp, &ac->local_port) != 0)
     118           0 :         goto failure;
     119             : 
     120           0 :     if (krb5_ret_int16 (sp, &ac->remote_port) != 0)
     121           0 :         goto failure;
     122           0 :     if (flags & SC_KEYBLOCK) {
     123           0 :         if (krb5_ret_keyblock (sp, &keyblock) != 0)
     124           0 :             goto failure;
     125           0 :         krb5_auth_con_setkey (context, ac, &keyblock);
     126           0 :         krb5_free_keyblock_contents (context, &keyblock);
     127             :     }
     128           0 :     if (flags & SC_LOCAL_SUBKEY) {
     129           0 :         if (krb5_ret_keyblock (sp, &keyblock) != 0)
     130           0 :             goto failure;
     131           0 :         krb5_auth_con_setlocalsubkey (context, ac, &keyblock);
     132           0 :         krb5_free_keyblock_contents (context, &keyblock);
     133             :     }
     134           0 :     if (flags & SC_REMOTE_SUBKEY) {
     135           0 :         if (krb5_ret_keyblock (sp, &keyblock) != 0)
     136           0 :             goto failure;
     137           0 :         krb5_auth_con_setremotesubkey (context, ac, &keyblock);
     138           0 :         krb5_free_keyblock_contents (context, &keyblock);
     139             :     }
     140           0 :     if (krb5_ret_uint32 (sp, &ac->local_seqnumber))
     141           0 :         goto failure;
     142           0 :     if (krb5_ret_uint32 (sp, &ac->remote_seqnumber))
     143           0 :         goto failure;
     144             : 
     145           0 :     if (flags & SC_AUTHENTICATOR) {
     146           0 :         if (krb5_ret_int64(sp, &tmp64))
     147           0 :             goto failure;
     148           0 :         ac->authenticator->ctime = tmp64;
     149           0 :         if (krb5_ret_int32(sp, &tmp))
     150           0 :             goto failure;
     151           0 :         ac->authenticator->cusec = tmp;
     152             :     }
     153             : 
     154           0 :     if (krb5_ret_int32 (sp, &tmp) != 0)
     155           0 :         goto failure;
     156           0 :     ac->keytype = tmp;
     157           0 :     if (krb5_ret_int32 (sp, &tmp) != 0)
     158           0 :         goto failure;
     159           0 :     ac->cksumtype = tmp;
     160             : 
     161             :     /* names */
     162           0 :     if (flags & SC_SOURCE_NAME) {
     163           0 :         if (krb5_ret_principal(sp, &ctx->source))
     164           0 :             goto failure;
     165             :     }
     166             : 
     167           0 :     if (flags & SC_TARGET_NAME) {
     168           0 :         if (krb5_ret_principal(sp, &ctx->target))
     169           0 :             goto failure;
     170             :     }
     171             : 
     172           0 :     if (krb5_ret_int32 (sp, &tmp))
     173           0 :         goto failure;
     174           0 :     ctx->flags = tmp;
     175           0 :     if (krb5_ret_int32 (sp, &tmp))
     176           0 :         goto failure;
     177           0 :     ctx->more_flags = tmp;
     178           0 :     if (krb5_ret_int32 (sp, &tmp))
     179           0 :         goto failure;
     180           0 :     ctx->state = tmp;
     181             :     /*
     182             :      * XXX endtime should be a 64-bit int, but we don't have
     183             :      * krb5_ret_int64() yet.
     184             :      */
     185           0 :     if (krb5_ret_int32 (sp, &tmp))
     186           0 :         goto failure;
     187           0 :     ctx->endtime = tmp;
     188             : 
     189           0 :     if (flags & SC_ORDER) {
     190           0 :         ret = _gssapi_msg_order_import(minor_status, sp, &ctx->order);
     191           0 :         if (ret)
     192           0 :             goto failure;
     193             :     }
     194             : 
     195           0 :     krb5_storage_free (sp);
     196             : 
     197           0 :     _gsskrb5i_is_cfx(context, ctx, (ctx->more_flags & LOCAL) == 0);
     198             : 
     199           0 :     *context_handle = (gss_ctx_id_t)ctx;
     200             : 
     201           0 :     return GSS_S_COMPLETE;
     202             : 
     203           0 : failure:
     204           0 :     krb5_auth_con_free (context,
     205             :                         ctx->auth_context);
     206           0 :     if (ctx->source != NULL)
     207           0 :         krb5_free_principal(context, ctx->source);
     208           0 :     if (ctx->target != NULL)
     209           0 :         krb5_free_principal(context, ctx->target);
     210           0 :     if (localp)
     211           0 :         krb5_free_address (context, localp);
     212           0 :     if (remotep)
     213           0 :         krb5_free_address (context, remotep);
     214           0 :     if(ctx->order)
     215           0 :         _gssapi_msg_order_destroy(&ctx->order);
     216           0 :     HEIMDAL_MUTEX_destroy(&ctx->ctx_id_mutex);
     217           0 :     krb5_storage_free (sp);
     218           0 :     free (ctx);
     219           0 :     *context_handle = GSS_C_NO_CONTEXT;
     220           0 :     return ret;
     221             : }