4fb6a6adc9
An implementation of draft-zhu-negoex-04 for MIT Kerberos was developed in 2011. This has been recently integrated, with many fixes from Greg Hudson. This commit ports it to Heimdal. The implementation has been interoperability tested with MIT Kerberos and Windows, using the GSS EAP mechanism developed as part of the Moonshot project. The SPNEGO code was also updated to import the state machine from Apple which improves mechListMIC processing and avoids discarding initial context tokens generated during mechanism probing, that can be used for optimistic tokens. Finally, to aid in testing, the GSS-API mechanism glue configuration file can be changed using the environment variable GSS_MECH_CONFIG. This environment variable name, along with the format of the configuration file, is compatible with MIT (although it would be difficult for a single mechanism binary to support both implementations).
682 lines
17 KiB
C
682 lines
17 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_compare_name
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(OM_uint32 *minor_status,
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gss_const_name_t name1,
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gss_const_name_t name2,
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int * name_equal
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)
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{
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return gss_compare_name(minor_status, name1, name2, name_equal);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_display_name
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(OM_uint32 * minor_status,
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gss_const_name_t input_name,
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gss_buffer_t output_name_buffer,
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gss_OID * output_name_type
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)
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{
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return gss_display_name(minor_status, input_name,
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output_name_buffer, output_name_type);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_import_name
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(OM_uint32 * minor_status,
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const gss_buffer_t name_buffer,
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const gss_OID name_type,
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gss_name_t * output_name
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)
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{
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return gss_import_name(minor_status, name_buffer,
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name_type, output_name);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_export_name
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(OM_uint32 * minor_status,
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gss_const_name_t input_name,
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gss_buffer_t exported_name
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)
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{
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return gss_export_name(minor_status, input_name, exported_name);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_release_name
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(OM_uint32 * minor_status,
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gss_name_t * input_name
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)
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{
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return gss_release_name(minor_status, input_name);
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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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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 ret;
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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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}
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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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if (ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT) {
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HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
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return GSS_S_NO_CONTEXT;
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}
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ret = gss_export_sec_context(minor_status,
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&ctx->negotiated_ctx_id,
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interprocess_token);
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if (ret == GSS_S_COMPLETE) {
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ret = _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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if (ret == GSS_S_COMPLETE)
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return GSS_S_COMPLETE;
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}
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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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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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OM_uint32 ret, minor;
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gss_ctx_id_t context;
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gssspnego_ctx ctx;
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*context_handle = GSS_C_NO_CONTEXT;
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ret = _gss_spnego_alloc_sec_context(minor_status, &context);
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if (ret != GSS_S_COMPLETE) {
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return ret;
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}
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ctx = (gssspnego_ctx)context;
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HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
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ret = gss_import_sec_context(minor_status,
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interprocess_token,
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&ctx->negotiated_ctx_id);
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if (ret != GSS_S_COMPLETE) {
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_gss_spnego_internal_delete_sec_context(&minor, &context, GSS_C_NO_BUFFER);
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return ret;
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}
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ctx->flags.open = 1;
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/* don't bother filling in the rest of the fields */
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HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
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*context_handle = (gss_ctx_id_t)ctx;
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return GSS_S_COMPLETE;
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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 _gss_spnego_inquire_mechs_for_name (
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OM_uint32 * minor_status,
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gss_const_name_t input_name,
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gss_OID_set * mech_types
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)
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{
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OM_uint32 ret, junk;
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ret = gss_create_empty_oid_set(minor_status, mech_types);
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if (ret)
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return ret;
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ret = gss_add_oid_set_member(minor_status,
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GSS_SPNEGO_MECHANISM,
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mech_types);
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if (ret)
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gss_release_oid_set(&junk, mech_types);
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return ret;
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_canonicalize_name (
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OM_uint32 * minor_status,
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gss_const_name_t input_name,
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const gss_OID mech_type,
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gss_name_t * output_name
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)
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{
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/* XXX */
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return gss_duplicate_name(minor_status, input_name, output_name);
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}
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OM_uint32 GSSAPI_CALLCONV _gss_spnego_duplicate_name (
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OM_uint32 * minor_status,
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gss_const_name_t src_name,
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gss_name_t * dest_name
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)
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{
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return gss_duplicate_name(minor_status, src_name, dest_name);
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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,
|
|
int conf_req_flag,
|
|
gss_qop_t qop_req,
|
|
int * conf_state,
|
|
gss_iov_buffer_desc *iov,
|
|
int iov_count)
|
|
{
|
|
gssspnego_ctx ctx = (gssspnego_ctx)context_handle;
|
|
|
|
*minor_status = 0;
|
|
|
|
if (ctx == NULL || ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
return gss_wrap_iov(minor_status, ctx->negotiated_ctx_id,
|
|
conf_req_flag, qop_req, conf_state,
|
|
iov, iov_count);
|
|
}
|
|
|
|
OM_uint32 GSSAPI_CALLCONV
|
|
_gss_spnego_unwrap_iov(OM_uint32 *minor_status,
|
|
gss_ctx_id_t context_handle,
|
|
int *conf_state,
|
|
gss_qop_t *qop_state,
|
|
gss_iov_buffer_desc *iov,
|
|
int iov_count)
|
|
{
|
|
gssspnego_ctx ctx = (gssspnego_ctx)context_handle;
|
|
|
|
*minor_status = 0;
|
|
|
|
if (ctx == NULL || ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
return gss_unwrap_iov(minor_status,
|
|
ctx->negotiated_ctx_id,
|
|
conf_state, qop_state,
|
|
iov, iov_count);
|
|
}
|
|
|
|
OM_uint32 GSSAPI_CALLCONV
|
|
_gss_spnego_wrap_iov_length(OM_uint32 * minor_status,
|
|
gss_ctx_id_t context_handle,
|
|
int conf_req_flag,
|
|
gss_qop_t qop_req,
|
|
int *conf_state,
|
|
gss_iov_buffer_desc *iov,
|
|
int iov_count)
|
|
{
|
|
gssspnego_ctx ctx = (gssspnego_ctx)context_handle;
|
|
|
|
*minor_status = 0;
|
|
|
|
if (ctx == NULL || ctx->negotiated_ctx_id == GSS_C_NO_CONTEXT)
|
|
return GSS_S_NO_CONTEXT;
|
|
|
|
return gss_wrap_iov_length(minor_status, ctx->negotiated_ctx_id,
|
|
conf_req_flag, qop_req, conf_state,
|
|
iov, iov_count);
|
|
}
|
|
|
|
#if 0
|
|
OM_uint32 GSSAPI_CALLCONV _gss_spnego_complete_auth_token
|
|
(OM_uint32 * minor_status,
|
|
gss_const_ctx_id_t context_handle,
|
|
gss_buffer_t input_message_buffer)
|
|
{
|
|
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_complete_auth_token(minor_status,
|
|
ctx->negotiated_ctx_id,
|
|
input_message_buffer);
|
|
}
|
|
#endif
|
|
|
|
OM_uint32 GSSAPI_CALLCONV _gss_spnego_inquire_sec_context_by_oid
|
|
(OM_uint32 * minor_status,
|
|
gss_const_ctx_id_t context_handle,
|
|
const gss_OID desired_object,
|
|
gss_buffer_set_t *data_set)
|
|
{
|
|
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_inquire_sec_context_by_oid(minor_status,
|
|
ctx->negotiated_ctx_id,
|
|
desired_object,
|
|
data_set);
|
|
}
|
|
|
|
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);
|
|
}
|