6554dc69b0
Support for exporting partially established acceptor context tokens. With this, an acceptor can send the initiator an encrypted state cookie containing the exported context token. (The concrete mechanism, of course, must either require a single round trip or support partial context export itself. Kerberos and GSS EAP would work, but Kerberos with GSS_C_DCE_STYLE would not, as currently implemented.) Partial context export is not permitted for initiators.
573 lines
14 KiB
C
573 lines
14 KiB
C
/*
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* Copyright (c) 2004, PADL Software Pty Ltd.
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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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "spnego_locl.h"
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_process_context_token
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(OM_uint32 *minor_status,
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gss_const_ctx_id_t context_handle,
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const gss_buffer_t token_buffer
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)
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{
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gss_ctx_id_t context;
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gssspnego_ctx ctx;
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OM_uint32 ret;
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if (context_handle == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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context = (gss_ctx_id_t)context_handle;
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ctx = (gssspnego_ctx)context_handle;
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HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
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ret = gss_process_context_token(minor_status,
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ctx->negotiated_ctx_id,
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token_buffer);
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if (ret != GSS_S_COMPLETE) {
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HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
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return ret;
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}
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ctx->negotiated_ctx_id = GSS_C_NO_CONTEXT;
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return _gss_spnego_internal_delete_sec_context(minor_status,
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&context,
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GSS_C_NO_BUFFER);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_delete_sec_context
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(OM_uint32 *minor_status,
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gss_ctx_id_t *context_handle,
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gss_buffer_t output_token
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)
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{
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gssspnego_ctx ctx;
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if (context_handle == NULL || *context_handle == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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ctx = (gssspnego_ctx)*context_handle;
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HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
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return _gss_spnego_internal_delete_sec_context(minor_status,
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context_handle,
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output_token);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_context_time
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(OM_uint32 *minor_status,
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gss_const_ctx_id_t context_handle,
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OM_uint32 *time_rec
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)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_context_time(minor_status,
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ctx->negotiated_ctx_id,
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time_rec);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_get_mic
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(OM_uint32 *minor_status,
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gss_const_ctx_id_t context_handle,
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gss_qop_t qop_req,
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const gss_buffer_t message_buffer,
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gss_buffer_t message_token
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)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_get_mic(minor_status, ctx->negotiated_ctx_id,
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qop_req, message_buffer, message_token);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_verify_mic
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(OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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const gss_buffer_t message_buffer,
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const gss_buffer_t token_buffer,
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gss_qop_t * qop_state
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)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_verify_mic(minor_status,
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ctx->negotiated_ctx_id,
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message_buffer,
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token_buffer,
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qop_state);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_wrap
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(OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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int conf_req_flag,
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gss_qop_t qop_req,
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const gss_buffer_t input_message_buffer,
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int * conf_state,
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gss_buffer_t output_message_buffer
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)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_wrap(minor_status,
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ctx->negotiated_ctx_id,
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conf_req_flag,
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qop_req,
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input_message_buffer,
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conf_state,
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output_message_buffer);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_unwrap
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(OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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const gss_buffer_t input_message_buffer,
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gss_buffer_t output_message_buffer,
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int * conf_state,
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gss_qop_t * qop_state
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)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_unwrap(minor_status,
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ctx->negotiated_ctx_id,
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input_message_buffer,
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output_message_buffer,
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conf_state,
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qop_state);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_inquire_context (
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OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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gss_name_t * src_name,
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gss_name_t * targ_name,
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OM_uint32 * lifetime_rec,
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gss_OID * mech_type,
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OM_uint32 * ctx_flags,
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int * locally_initiated,
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int * open_context
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)
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{
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gssspnego_ctx ctx;
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OM_uint32 maj_stat;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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maj_stat = gss_inquire_context(minor_status,
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ctx->negotiated_ctx_id,
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src_name,
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targ_name,
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lifetime_rec,
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mech_type,
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ctx_flags,
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locally_initiated,
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open_context);
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if (open_context)
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*open_context = gssspnego_ctx_complete_p(ctx);
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return maj_stat;
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_wrap_size_limit (
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OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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int conf_req_flag,
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gss_qop_t qop_req,
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OM_uint32 req_output_size,
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OM_uint32 * max_input_size
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)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_wrap_size_limit(minor_status,
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ctx->negotiated_ctx_id,
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conf_req_flag,
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qop_req,
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req_output_size,
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max_input_size);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_export_sec_context (
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OM_uint32 * minor_status,
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gss_ctx_id_t * context_handle,
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gss_buffer_t interprocess_token
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)
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{
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gssspnego_ctx ctx;
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OM_uint32 major_status;
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*minor_status = 0;
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if (context_handle == NULL)
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return GSS_S_NO_CONTEXT;
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ctx = (gssspnego_ctx)*context_handle;
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if (ctx == NULL)
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return GSS_S_NO_CONTEXT;
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HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
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/*
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* Partial context export is only supported on the acceptor side, as we
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* cannot represent the initiator function pointer state in an exported
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* token, and also because it is mostly useful for acceptors which need
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* to manage multiple initiator states.
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*/
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if (ctx->flags.local && !gssspnego_ctx_complete_p(ctx)) {
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major_status = GSS_S_NO_CONTEXT;
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goto out;
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}
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major_status = _gss_spnego_export_sec_context_internal(minor_status,
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ctx,
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interprocess_token);
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out:
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if (major_status == GSS_S_COMPLETE)
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major_status = _gss_spnego_internal_delete_sec_context(minor_status,
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context_handle,
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GSS_C_NO_BUFFER);
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else
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HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
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return major_status;
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_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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return _gss_spnego_import_sec_context_internal(minor_status,
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interprocess_token,
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(gssspnego_ctx *)context_handle);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_inquire_names_for_mech (
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OM_uint32 * minor_status,
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const gss_OID mechanism,
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gss_OID_set * name_types
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)
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{
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gss_OID_set mechs, names, n;
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OM_uint32 ret, junk;
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size_t i, j;
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*name_types = NULL;
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ret = _gss_spnego_indicate_mechs(minor_status, &mechs);
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if (ret != GSS_S_COMPLETE)
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return ret;
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ret = gss_create_empty_oid_set(minor_status, &names);
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if (ret != GSS_S_COMPLETE)
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goto out;
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for (i = 0; i < mechs->count; i++) {
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ret = gss_inquire_names_for_mech(minor_status,
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&mechs->elements[i],
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&n);
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if (ret)
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continue;
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for (j = 0; j < n->count; j++)
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gss_add_oid_set_member(minor_status,
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&n->elements[j],
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&names);
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gss_release_oid_set(&junk, &n);
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}
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ret = GSS_S_COMPLETE;
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*name_types = names;
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out:
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gss_release_oid_set(&junk, &mechs);
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return ret;
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}
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OM_uint32 GSSAPI_CALLCONV
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_gss_spnego_wrap_iov(OM_uint32 * minor_status,
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gss_ctx_id_t context_handle,
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int conf_req_flag,
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gss_qop_t qop_req,
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int * conf_state,
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gss_iov_buffer_desc *iov,
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int iov_count)
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{
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gssspnego_ctx ctx = (gssspnego_ctx)context_handle;
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*minor_status = 0;
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if (ctx == NULL || ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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return gss_wrap_iov(minor_status, ctx->negotiated_ctx_id,
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conf_req_flag, qop_req, conf_state,
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iov, iov_count);
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}
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OM_uint32 GSSAPI_CALLCONV
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_gss_spnego_unwrap_iov(OM_uint32 *minor_status,
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gss_ctx_id_t context_handle,
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int *conf_state,
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gss_qop_t *qop_state,
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gss_iov_buffer_desc *iov,
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int iov_count)
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{
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gssspnego_ctx ctx = (gssspnego_ctx)context_handle;
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*minor_status = 0;
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if (ctx == NULL || ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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return gss_unwrap_iov(minor_status,
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ctx->negotiated_ctx_id,
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conf_state, qop_state,
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iov, iov_count);
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}
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OM_uint32 GSSAPI_CALLCONV
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_gss_spnego_wrap_iov_length(OM_uint32 * minor_status,
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gss_ctx_id_t context_handle,
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int conf_req_flag,
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gss_qop_t qop_req,
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int *conf_state,
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gss_iov_buffer_desc *iov,
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int iov_count)
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{
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gssspnego_ctx ctx = (gssspnego_ctx)context_handle;
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*minor_status = 0;
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if (ctx == NULL || ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
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return GSS_S_NO_CONTEXT;
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return gss_wrap_iov_length(minor_status, ctx->negotiated_ctx_id,
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conf_req_flag, qop_req, conf_state,
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iov, iov_count);
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}
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#if 0
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_complete_auth_token
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(OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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gss_buffer_t input_message_buffer)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_complete_auth_token(minor_status,
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ctx->negotiated_ctx_id,
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input_message_buffer);
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}
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#endif
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_inquire_sec_context_by_oid
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(OM_uint32 * minor_status,
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gss_const_ctx_id_t context_handle,
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const gss_OID desired_object,
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gss_buffer_set_t *data_set)
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{
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gssspnego_ctx ctx;
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*minor_status = 0;
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if (context_handle == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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ctx = (gssspnego_ctx)context_handle;
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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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return GSS_S_NO_CONTEXT;
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}
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return gss_inquire_sec_context_by_oid(minor_status,
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ctx->negotiated_ctx_id,
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desired_object,
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data_set);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_set_sec_context_option
|
|
(OM_uint32 * minor_status,
|
|
gss_ctx_id_t * context_handle,
|
|
const gss_OID desired_object,
|
|
const gss_buffer_t value)
|
|
{
|
|
gssspnego_ctx ctx;
|
|
|
|
*minor_status = 0;
|
|
|
|
if (context_handle == NULL || *context_handle == GSS_C_NO_CONTEXT) {
|
|
return GSS_S_NO_CONTEXT;
|
|
}
|
|
|
|
ctx = (gssspnego_ctx)*context_handle;
|
|
|
|
if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
|
|
return GSS_S_NO_CONTEXT;
|
|
}
|
|
|
|
return gss_set_sec_context_option(minor_status,
|
|
&ctx->negotiated_ctx_id,
|
|
desired_object,
|
|
value);
|
|
}
|
|
|
|
|
|
OM_uint32 GSSAPI_CALLCONV
|
|
_gss_spnego_pseudo_random(OM_uint32 *minor_status,
|
|
gss_ctx_id_t context_handle,
|
|
int prf_key,
|
|
const gss_buffer_t prf_in,
|
|
ssize_t desired_output_len,
|
|
gss_buffer_t prf_out)
|
|
{
|
|
gssspnego_ctx ctx;
|
|
|
|
*minor_status = 0;
|
|
|
|
if (context_handle == GSS_C_NO_CONTEXT)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
ctx = (gssspnego_ctx)context_handle;
|
|
|
|
if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
return gss_pseudo_random(minor_status,
|
|
ctx->negotiated_ctx_id,
|
|
prf_key,
|
|
prf_in,
|
|
desired_output_len,
|
|
prf_out);
|
|
}
|