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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright (C) 2020 by Red Hat, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "common.h"
/*
* Establish contexts (without and with GSS_C_DCE_STYLE) with the default
* initiator name, a specified principal name as target name, initiator
* bindings, and acceptor bindings. If any call is unsuccessful, display an
* error message. Output "yes" or "no" to indicate whether the contexts were
* reported as channel-bound on the acceptor. Exit with status 0 if all
* operations are successful, or 1 if not.
*
* Usage: ./t_bindings [-s] [-b] targetname icb acb
*
* An icb or abc value of "-" will not specify channel bindings. The -s flag
* uses the SPNEGO mechanism instead of the krb5 mecanism. The -b flag
* includes GSS_C_CHANNEL_BOUND in req_flags, which requests strict enforcement
* of channel bindings by the acceptor.
*/
int
main(int argc, char *argv[])
{
OM_uint32 client_flags = 0;
OM_uint32 minor, flags1, flags2;
gss_name_t target_name;
gss_ctx_id_t ictx, actx;
struct gss_channel_bindings_struct icb_data = {0}, acb_data = {0};
gss_channel_bindings_t icb = GSS_C_NO_CHANNEL_BINDINGS;
gss_channel_bindings_t acb = GSS_C_NO_CHANNEL_BINDINGS;
gss_OID_desc *mech = GSS_C_NO_OID;
argv++;
argc--;
if (*argv != NULL && strcmp(*argv, "-s") == 0) {
mech = &mech_spnego;
argv++;
argc--;
}
if (*argv != NULL && strcmp(*argv, "-b") == 0) {
client_flags |= GSS_C_CHANNEL_BOUND_FLAG;
argv++;
argc--;
}
if (mech == GSS_C_NO_OID)
mech = &mech_krb5;
if (argc != 3) {
fprintf(stderr, "Usage: t_bindings [-s] [-b] targetname icb acb\n");
return 1;
}
target_name = import_name(argv[0]);
if (strcmp(argv[1], "-") != 0) {
icb_data.application_data.length = strlen(argv[1]);
icb_data.application_data.value = argv[1];
icb = &icb_data;
}
if (strcmp(argv[2], "-") != 0) {
acb_data.application_data.length = strlen(argv[2]);
acb_data.application_data.value = argv[2];
acb = &acb_data;
}
establish_contexts_ex(mech, GSS_C_NO_CREDENTIAL, GSS_C_NO_CREDENTIAL,
target_name, client_flags, &ictx, &actx, icb, acb,
&flags1, NULL, NULL, NULL);
/* Try again with GSS_C_DCE_STYLE */
(void)gss_delete_sec_context(&minor, &ictx, NULL);
(void)gss_delete_sec_context(&minor, &actx, NULL);
client_flags |= GSS_C_DCE_STYLE;
establish_contexts_ex(mech, GSS_C_NO_CREDENTIAL, GSS_C_NO_CREDENTIAL,
target_name, client_flags, &ictx, &actx, icb, acb,
&flags2, NULL, NULL, NULL);
assert((flags1 & GSS_C_CHANNEL_BOUND_FLAG) ==
(flags2 & GSS_C_CHANNEL_BOUND_FLAG));
printf("%s\n", (flags1 & GSS_C_CHANNEL_BOUND_FLAG) ? "yes" : "no");
(void)gss_delete_sec_context(&minor, &ictx, NULL);
(void)gss_delete_sec_context(&minor, &actx, NULL);
(void)gss_release_name(&minor, &target_name);
return 0;
}
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