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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* tests/gssapi/t_err.c - Test accept_sec_context error generation */
/*
* Copyright (C) 2013 by the Massachusetts Institute of Technology.
* 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.
*/
/*
* This test program verifies that the krb5 gss_accept_sec_context can produce
* error tokens and that gss_init_sec_context can interpret them.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "common.h"
static void
check_replay_error(const char *msg, OM_uint32 major, OM_uint32 minor)
{
OM_uint32 tmpmin, msg_ctx = 0;
const char *replay = "Request is a replay";
gss_buffer_desc m;
if (major != GSS_S_FAILURE) {
fprintf(stderr, "%s: expected major code GSS_S_FAILURE\n", msg);
check_gsserr(msg, major, minor);
exit(1);
}
(void)gss_display_status(&tmpmin, minor, GSS_C_MECH_CODE, GSS_C_NULL_OID,
&msg_ctx, &m);
if (m.length != strlen(replay) || memcmp(m.value, replay, m.length) != 0) {
fprintf(stderr, "%s: expected replay error; got %.*s\n", msg,
(int)m.length, (char *)m.value);
exit(1);
}
(void)gss_release_buffer(&tmpmin, &m);
}
int
main(int argc, char *argv[])
{
OM_uint32 minor, major, flags;
gss_OID mech = &mech_krb5;
gss_name_t tname;
gss_buffer_desc itok, atok;
gss_ctx_id_t ictx = GSS_C_NO_CONTEXT, actx = GSS_C_NO_CONTEXT;
if (argc != 2) {
fprintf(stderr, "Usage: %s targetname\n", argv[0]);
return 1;
}
tname = import_name(argv[1]);
/* Get the initial context token. */
flags = GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_MUTUAL_FLAG;
major = gss_init_sec_context(&minor, GSS_C_NO_CREDENTIAL, &ictx, tname,
mech, flags, GSS_C_INDEFINITE,
GSS_C_NO_CHANNEL_BINDINGS, GSS_C_NO_BUFFER,
NULL, &itok, NULL, NULL);
check_gsserr("gss_init_sec_context(1)", major, minor);
assert(major == GSS_S_CONTINUE_NEEDED);
/* Process this token into an acceptor context, then discard it. */
major = gss_accept_sec_context(&minor, &actx, GSS_C_NO_CREDENTIAL, &itok,
GSS_C_NO_CHANNEL_BINDINGS, NULL,
NULL, &atok, NULL, NULL, NULL);
check_gsserr("gss_accept_sec_context(1)", major, minor);
(void)gss_release_buffer(&minor, &atok);
(void)gss_delete_sec_context(&minor, &actx, NULL);
/* Process the same token again, producing a replay error. */
major = gss_accept_sec_context(&minor, &actx, GSS_C_NO_CREDENTIAL, &itok,
GSS_C_NO_CHANNEL_BINDINGS, NULL,
NULL, &atok, NULL, NULL, NULL);
check_replay_error("gss_accept_sec_context(2)", major, minor);
assert(atok.length != 0);
/* Send the error token back the initiator. */
(void)gss_release_buffer(&minor, &itok);
major = gss_init_sec_context(&minor, GSS_C_NO_CREDENTIAL, &ictx, tname,
mech, flags, GSS_C_INDEFINITE,
GSS_C_NO_CHANNEL_BINDINGS, &atok,
NULL, &itok, NULL, NULL);
check_replay_error("gss_init_sec_context(2)", major, minor);
(void)gss_release_name(&minor, &tname);
(void)gss_release_buffer(&minor, &itok);
(void)gss_release_buffer(&minor, &atok);
(void)gss_delete_sec_context(&minor, &ictx, NULL);
(void)gss_delete_sec_context(&minor, &actx, NULL);
return 0;
}
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