9383a88a86
The NegoEx gss_{exchange,query}_meta_data functions set allocated_ctx but never
did anything with it. Use it to determine whether we should free the context
handle on error.
116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*-
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* Copyright (c) 2005 Doug Rabson
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* All rights reserved.
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*
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* Portions Copyright (c) 2009 Apple Inc. All rights reserved.
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* Portions Copyright (c) 2019 AuriStor, Inc. 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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* 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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* 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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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 "mech_locl.h"
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GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
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gssspi_exchange_meta_data(
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OM_uint32 *minor_status,
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gss_const_OID input_mech_type,
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gss_cred_id_t input_cred_handle,
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gss_ctx_id_t *context_handle,
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gss_const_name_t target_name,
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OM_uint32 req_flags,
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gss_const_buffer_t meta_data)
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{
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OM_uint32 major_status, junk;
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gssapi_mech_interface m;
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struct _gss_name *name = (struct _gss_name *) target_name;
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struct _gss_mechanism_name *mn;
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struct _gss_context *ctx = (struct _gss_context *) *context_handle;
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gss_cred_id_t cred_handle;
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int allocated_ctx;
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gss_const_OID mech_type = input_mech_type;
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*minor_status = 0;
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if (mech_type == GSS_C_NO_OID)
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return GSS_S_BAD_MECH;
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if (ctx == NULL) {
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ctx = calloc(1, sizeof(struct _gss_context));
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if (ctx == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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m = ctx->gc_mech = __gss_get_mechanism(mech_type);
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if (m == NULL) {
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free(ctx);
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return GSS_S_BAD_MECH;
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}
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allocated_ctx = 1;
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} else {
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m = ctx->gc_mech;
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mech_type = &m->gm_mech_oid;
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allocated_ctx = 0;
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}
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if (m->gm_exchange_meta_data == NULL) {
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major_status = GSS_S_BAD_MECH;
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goto cleanup;
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}
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major_status = _gss_find_mn(minor_status, name, mech_type, &mn);
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if (major_status != GSS_S_COMPLETE)
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goto cleanup;
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if (m->gm_flags & GM_USE_MG_CRED)
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cred_handle = input_cred_handle;
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else
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cred_handle = _gss_mg_find_mech_cred(input_cred_handle, mech_type);
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if (input_cred_handle != GSS_C_NO_CREDENTIAL &&
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cred_handle == NULL) {
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major_status = GSS_S_NO_CRED;
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goto cleanup;
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}
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/* note: mechanism is not obligated to allocate a context on success */
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major_status = m->gm_exchange_meta_data(minor_status,
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mech_type,
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cred_handle,
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&ctx->gc_ctx,
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mn ? mn->gmn_name : GSS_C_NO_NAME,
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req_flags,
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meta_data);
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if (major_status != GSS_S_COMPLETE)
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_gss_mg_error(m, *minor_status);
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cleanup:
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if (allocated_ctx && major_status != GSS_S_COMPLETE)
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gss_delete_sec_context(&junk, (gss_ctx_id_t *)&ctx, GSS_C_NO_BUFFER);
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*context_handle = (gss_ctx_id_t) ctx;
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_gss_mg_log(10, "gss-emd: return %d/%d", (int)major_status, (int)*minor_status);
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return major_status;
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}
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