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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2015 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "common.h"
/*
* Test program for inquiring about a security context, intended to be run from
* a Python test script. Partially establishes a context to test inquiring
* about an incomplete context, and then establishes full contexts and inquires
* them. Exits with status 0 if all operations are successful, or 1 if not.
*
* Usage: ./t_inq_ctx target_name
*/
static void
check_inq_context(gss_ctx_id_t context, int incomplete, gss_OID expected_mech,
OM_uint32 expected_flags, int expected_locally_init)
{
OM_uint32 major, minor;
gss_name_t out_init_name, out_accept_name;
OM_uint32 out_lifetime;
gss_OID out_mech_type;
OM_uint32 out_flags;
int out_locally_init;
int out_open;
major = gss_inquire_context(&minor, context, &out_init_name,
&out_accept_name, &out_lifetime,
&out_mech_type, &out_flags, &out_locally_init,
&out_open);
check_gsserr("gss_inquire_context", major, minor);
assert(gss_oid_equal(out_mech_type, expected_mech));
assert(out_flags == expected_flags);
assert(out_locally_init == expected_locally_init);
if (incomplete) {
assert(!out_open);
assert(out_lifetime == 0);
assert(out_init_name == GSS_C_NO_NAME);
assert(out_accept_name == GSS_C_NO_NAME);
} else {
assert(out_open);
assert(out_lifetime > 0);
assert(out_init_name != GSS_C_NO_NAME);
assert(out_accept_name != GSS_C_NO_NAME);
}
(void)gss_release_name(&minor, &out_accept_name);
(void)gss_release_name(&minor, &out_init_name);
}
/* Call gss_init_sec_context() once to create an initiator context (which will
* be partial if flags includes GSS_C_MUTUAL_FLAG and the mech is krb5). */
static void
start_init_context(gss_OID mech, gss_cred_id_t cred, gss_name_t tname,
OM_uint32 flags, gss_ctx_id_t *ctx)
{
OM_uint32 major, minor;
gss_buffer_desc itok = GSS_C_EMPTY_BUFFER;
*ctx = GSS_C_NO_CONTEXT;
major = gss_init_sec_context(&minor, cred, ctx, tname, mech, flags,
GSS_C_INDEFINITE, GSS_C_NO_CHANNEL_BINDINGS,
NULL, NULL, &itok, NULL, NULL);
check_gsserr("gss_init_sec_context", major, minor);
(void)gss_release_buffer(&minor, &itok);
}
/* Call gss_init_sec_context() and gss_accept_sec_context() once to create an
* acceptor context. */
static void
start_accept_context(gss_OID mech, gss_cred_id_t icred, gss_cred_id_t acred,
gss_name_t tname, OM_uint32 flags, gss_ctx_id_t *ctx)
{
OM_uint32 major, minor;
gss_ctx_id_t ictx = GSS_C_NO_CONTEXT;
gss_buffer_desc itok = GSS_C_EMPTY_BUFFER, atok = GSS_C_EMPTY_BUFFER;
major = gss_init_sec_context(&minor, icred, &ictx, tname, mech, flags,
GSS_C_INDEFINITE, GSS_C_NO_CHANNEL_BINDINGS,
NULL, NULL, &itok, NULL, NULL);
check_gsserr("gss_init_sec_context", major, minor);
*ctx = GSS_C_NO_CONTEXT;
major = gss_accept_sec_context(&minor, ctx, acred, &itok,
GSS_C_NO_CHANNEL_BINDINGS, NULL, NULL,
&atok, NULL, NULL, NULL);
check_gsserr("gss_accept_sec_context", major, minor);
(void)gss_release_buffer(&minor, &itok);
(void)gss_release_buffer(&minor, &atok);
(void)gss_delete_sec_context(&minor, &ictx, NULL);
}
static void
partial_iakerb_acceptor(const char *username, const char *password,
gss_name_t tname, OM_uint32 flags, gss_ctx_id_t *ctx)
{
OM_uint32 major, minor;
gss_name_t name;
gss_buffer_desc ubuf, pwbuf;
gss_OID_set_desc mechlist;
gss_cred_id_t icred, acred;
mechlist.count = 1;
mechlist.elements = &mech_iakerb;
/* Import the username. */
ubuf.value = (void *)username;
ubuf.length = strlen(username);
major = gss_import_name(&minor, &ubuf, GSS_C_NT_USER_NAME, &name);
check_gsserr("gss_import_name", major, minor);
/* Create an IAKERB initiator cred with the username and password. */
pwbuf.value = (void *)password;
pwbuf.length = strlen(password);
major = gss_acquire_cred_with_password(&minor, name, &pwbuf, 0,
&mechlist, GSS_C_INITIATE, &icred,
NULL, NULL);
check_gsserr("gss_acquire_cred_with_password", major, minor);
/* Create an acceptor cred with support for IAKERB. */
major = gss_acquire_cred(&minor, GSS_C_NO_NAME, GSS_C_INDEFINITE,
&mechlist, GSS_C_ACCEPT, &acred, NULL, NULL);
check_gsserr("gss_acquire_cred", major, minor);
/* Begin context establishment to get a partial acceptor context. */
start_accept_context(&mech_iakerb, icred, acred, tname, flags, ctx);
(void)gss_release_name(&minor, &name);
(void)gss_release_cred(&minor, &icred);
(void)gss_release_cred(&minor, &acred);
}
/* Create a partially established SPNEGO acceptor. */
static void
partial_spnego_acceptor(gss_name_t tname, gss_ctx_id_t *ctx)
{
OM_uint32 major, minor;
gss_buffer_desc itok = GSS_C_EMPTY_BUFFER, atok;
/*
* We could construct a fixed SPNEGO initiator token which forces a
* renegotiation, but a simpler approach is to pass an empty token to
* gss_accept_sec_context(), taking advantage of our compatibility support
* for SPNEGO NegHints.
*/
*ctx = GSS_C_NO_CONTEXT;
major = gss_accept_sec_context(&minor, ctx, GSS_C_NO_CREDENTIAL, &itok,
GSS_C_NO_CHANNEL_BINDINGS, NULL, NULL,
&atok, NULL, NULL, NULL);
check_gsserr("gss_accept_sec_context(neghints)", major, minor);
(void)gss_release_buffer(&minor, &atok);
}
int
main(int argc, char *argv[])
{
OM_uint32 minor, flags, dce_flags;
gss_name_t tname;
gss_ctx_id_t ictx, actx;
const char *username, *password;
if (argc != 4) {
fprintf(stderr, "Usage: %s username password targetname\n", argv[0]);
return 1;
}
username = argv[1];
password = argv[2];
tname = import_name(argv[3]);
flags = GSS_C_SEQUENCE_FLAG | GSS_C_MUTUAL_FLAG | GSS_C_CONF_FLAG |
GSS_C_INTEG_FLAG;
start_init_context(&mech_krb5, GSS_C_NO_CREDENTIAL, tname, flags, &ictx);
check_inq_context(ictx, 1, &mech_krb5, flags | GSS_C_TRANS_FLAG, 1);
(void)gss_delete_sec_context(&minor, &ictx, NULL);
start_init_context(&mech_iakerb, GSS_C_NO_CREDENTIAL, tname, flags, &ictx);
check_inq_context(ictx, 1, &mech_iakerb, flags, 1);
(void)gss_delete_sec_context(&minor, &ictx, NULL);
start_init_context(&mech_spnego, GSS_C_NO_CREDENTIAL, tname, flags, &ictx);
check_inq_context(ictx, 1, &mech_spnego, flags, 1);
(void)gss_delete_sec_context(&minor, &ictx, NULL);
dce_flags = flags | GSS_C_DCE_STYLE;
start_accept_context(&mech_krb5, GSS_C_NO_CREDENTIAL, GSS_C_NO_CREDENTIAL,
tname, dce_flags, &actx);
check_inq_context(actx, 1, &mech_krb5, dce_flags | GSS_C_TRANS_FLAG, 0);
(void)gss_delete_sec_context(&minor, &actx, NULL);
partial_iakerb_acceptor(username, password, tname, flags, &actx);
check_inq_context(actx, 1, &mech_iakerb, 0, 0);
(void)gss_delete_sec_context(&minor, &actx, NULL);
partial_spnego_acceptor(tname, &actx);
check_inq_context(actx, 1, &mech_spnego, 0, 0);
(void)gss_delete_sec_context(&minor, &actx, NULL);
establish_contexts(&mech_krb5, GSS_C_NO_CREDENTIAL, GSS_C_NO_CREDENTIAL,
tname, flags, &ictx, &actx, NULL, NULL, NULL);
check_inq_context(ictx, 0, &mech_krb5, flags | GSS_C_TRANS_FLAG, 1);
check_inq_context(actx, 0, &mech_krb5,
flags | GSS_C_TRANS_FLAG | GSS_C_PROT_READY_FLAG, 0);
(void)gss_delete_sec_context(&minor, &ictx, NULL);
(void)gss_delete_sec_context(&minor, &actx, NULL);
(void)gss_release_name(&minor, &tname);
return 0;
}
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