213 lines
6.3 KiB
C
213 lines
6.3 KiB
C
/*
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* Copyright (c) 1999 - 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "gssapi_locl.h"
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RCSID("$Id: import_sec_context.c,v 1.7 2003/03/16 18:01:32 lha Exp $");
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OM_uint32
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gss_import_sec_context (
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OM_uint32 * minor_status,
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const gss_buffer_t interprocess_token,
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gss_ctx_id_t * context_handle
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)
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{
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OM_uint32 ret = GSS_S_FAILURE;
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krb5_error_code kret;
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krb5_storage *sp;
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krb5_auth_context ac;
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krb5_address local, remote;
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krb5_address *localp, *remotep;
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krb5_data data;
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gss_buffer_desc buffer;
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krb5_keyblock keyblock;
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int32_t tmp;
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int32_t flags;
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OM_uint32 minor;
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GSSAPI_KRB5_INIT ();
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localp = remotep = NULL;
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sp = krb5_storage_from_mem (interprocess_token->value,
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interprocess_token->length);
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if (sp == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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*context_handle = malloc(sizeof(**context_handle));
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if (*context_handle == NULL) {
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*minor_status = ENOMEM;
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krb5_storage_free (sp);
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return GSS_S_FAILURE;
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}
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memset (*context_handle, 0, sizeof(**context_handle));
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kret = krb5_auth_con_init (gssapi_krb5_context,
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&(*context_handle)->auth_context);
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if (kret) {
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gssapi_krb5_set_error_string ();
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*minor_status = kret;
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ret = GSS_S_FAILURE;
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goto failure;
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}
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/* flags */
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*minor_status = 0;
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if (krb5_ret_int32 (sp, &flags) != 0)
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goto failure;
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/* retrieve the auth context */
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ac = (*context_handle)->auth_context;
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krb5_ret_int32 (sp, &ac->flags);
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if (flags & SC_LOCAL_ADDRESS) {
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if (krb5_ret_address (sp, localp = &local) != 0)
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goto failure;
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}
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if (flags & SC_REMOTE_ADDRESS) {
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if (krb5_ret_address (sp, remotep = &remote) != 0)
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goto failure;
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}
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krb5_auth_con_setaddrs (gssapi_krb5_context, ac, localp, remotep);
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if (localp)
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krb5_free_address (gssapi_krb5_context, localp);
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if (remotep)
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krb5_free_address (gssapi_krb5_context, remotep);
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localp = remotep = NULL;
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if (krb5_ret_int16 (sp, &ac->local_port) != 0)
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goto failure;
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if (krb5_ret_int16 (sp, &ac->remote_port) != 0)
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goto failure;
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if (flags & SC_KEYBLOCK) {
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if (krb5_ret_keyblock (sp, &keyblock) != 0)
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goto failure;
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krb5_auth_con_setkey (gssapi_krb5_context, ac, &keyblock);
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krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock);
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}
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if (flags & SC_LOCAL_SUBKEY) {
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if (krb5_ret_keyblock (sp, &keyblock) != 0)
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goto failure;
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krb5_auth_con_setlocalsubkey (gssapi_krb5_context, ac, &keyblock);
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krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock);
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}
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if (flags & SC_REMOTE_SUBKEY) {
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if (krb5_ret_keyblock (sp, &keyblock) != 0)
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goto failure;
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krb5_auth_con_setremotesubkey (gssapi_krb5_context, ac, &keyblock);
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krb5_free_keyblock_contents (gssapi_krb5_context, &keyblock);
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}
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if (krb5_ret_int32 (sp, &ac->local_seqnumber))
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goto failure;
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if (krb5_ret_int32 (sp, &ac->remote_seqnumber))
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goto failure;
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if (krb5_ret_int32 (sp, &tmp) != 0)
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goto failure;
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ac->keytype = tmp;
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if (krb5_ret_int32 (sp, &tmp) != 0)
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goto failure;
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ac->cksumtype = tmp;
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/* names */
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if (krb5_ret_data (sp, &data))
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goto failure;
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buffer.value = data.data;
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buffer.length = data.length;
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ret = gss_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME,
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&(*context_handle)->source);
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if (ret) {
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ret = gss_import_name (minor_status, &buffer, GSS_C_NO_OID,
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&(*context_handle)->source);
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if (ret) {
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krb5_data_free (&data);
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goto failure;
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}
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}
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krb5_data_free (&data);
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if (krb5_ret_data (sp, &data) != 0)
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goto failure;
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buffer.value = data.data;
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buffer.length = data.length;
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ret = gss_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME,
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&(*context_handle)->target);
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if (ret) {
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ret = gss_import_name (minor_status, &buffer, GSS_C_NO_OID,
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&(*context_handle)->target);
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if (ret) {
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krb5_data_free (&data);
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goto failure;
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}
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}
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krb5_data_free (&data);
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if (krb5_ret_int32 (sp, &tmp))
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goto failure;
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(*context_handle)->flags = tmp;
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if (krb5_ret_int32 (sp, &tmp))
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goto failure;
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(*context_handle)->more_flags = tmp;
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if (krb5_ret_int32 (sp, &tmp) == 0)
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(*context_handle)->lifetime = tmp;
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else
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(*context_handle)->lifetime = GSS_C_INDEFINITE;
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return GSS_S_COMPLETE;
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failure:
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krb5_auth_con_free (gssapi_krb5_context,
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(*context_handle)->auth_context);
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if ((*context_handle)->source != NULL)
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gss_release_name(&minor, &(*context_handle)->source);
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if ((*context_handle)->target != NULL)
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gss_release_name(&minor, &(*context_handle)->target);
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if (localp)
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krb5_free_address (gssapi_krb5_context, localp);
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if (remotep)
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krb5_free_address (gssapi_krb5_context, remotep);
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free (*context_handle);
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*context_handle = GSS_C_NO_CONTEXT;
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return ret;
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}
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