234 lines
6.4 KiB
C
234 lines
6.4 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 "gsskrb5_locl.h"
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OM_uint32 GSSAPI_CALLCONV
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_gsskrb5_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_context context;
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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 flags, tmp;
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gsskrb5_ctx ctx;
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gss_name_t name;
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GSSAPI_KRB5_INIT (&context);
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*context_handle = GSS_C_NO_CONTEXT;
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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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ctx = calloc(1, sizeof(*ctx));
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if (ctx == 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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HEIMDAL_MUTEX_init(&ctx->ctx_id_mutex);
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kret = krb5_auth_con_init (context,
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&ctx->auth_context);
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if (kret) {
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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 = ctx->auth_context;
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if (krb5_ret_int32 (sp, &tmp) != 0)
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goto failure;
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ac->flags = tmp;
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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 (context, ac, localp, remotep);
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if (localp)
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krb5_free_address (context, localp);
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if (remotep)
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krb5_free_address (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 (context, ac, &keyblock);
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krb5_free_keyblock_contents (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 (context, ac, &keyblock);
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krb5_free_keyblock_contents (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 (context, ac, &keyblock);
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krb5_free_keyblock_contents (context, &keyblock);
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}
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if (krb5_ret_uint32 (sp, &ac->local_seqnumber))
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goto failure;
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if (krb5_ret_uint32 (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 = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME,
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&name);
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if (ret) {
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ret = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NO_OID,
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&name);
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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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ctx->source = (krb5_principal)name;
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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 = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME,
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&name);
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if (ret) {
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ret = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NO_OID,
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&name);
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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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ctx->target = (krb5_principal)name;
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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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ctx->flags = tmp;
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if (krb5_ret_int32 (sp, &tmp))
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goto failure;
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ctx->more_flags = tmp;
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/*
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* XXX endtime should be a 64-bit int, but we don't have
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* krb5_ret_int64() yet.
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*/
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if (krb5_ret_int32 (sp, &tmp))
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goto failure;
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ctx->endtime = tmp;
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ret = _gssapi_msg_order_import(minor_status, sp, &ctx->order);
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if (ret)
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goto failure;
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krb5_storage_free (sp);
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_gsskrb5i_is_cfx(context, ctx, (ctx->more_flags & LOCAL) == 0);
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*context_handle = (gss_ctx_id_t)ctx;
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return GSS_S_COMPLETE;
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failure:
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krb5_auth_con_free (context,
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ctx->auth_context);
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if (ctx->source != NULL)
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krb5_free_principal(context, ctx->source);
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if (ctx->target != NULL)
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krb5_free_principal(context, ctx->target);
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if (localp)
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krb5_free_address (context, localp);
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if (remotep)
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krb5_free_address (context, remotep);
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if(ctx->order)
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_gssapi_msg_order_destroy(&ctx->order);
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HEIMDAL_MUTEX_destroy(&ctx->ctx_id_mutex);
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krb5_storage_free (sp);
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free (ctx);
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*context_handle = GSS_C_NO_CONTEXT;
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return ret;
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}
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