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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2009 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
static int use_spnego = 0;
static void
test_export_import_name(gss_name_t name)
{
OM_uint32 major, minor;
gss_buffer_desc exported_name = GSS_C_EMPTY_BUFFER;
gss_name_t imported_name = GSS_C_NO_NAME;
unsigned int i;
major = gss_export_name_composite(&minor, name, &exported_name);
check_gsserr("gss_export_name_composite", major, minor);
printf("Exported name:\n");
for (i = 0; i < exported_name.length; i++) {
if ((i % 32) == 0)
printf("\n");
printf("%02x", ((char *)exported_name.value)[i] & 0xFF);
}
printf("\n");
major = gss_import_name(&minor, &exported_name, GSS_C_NT_EXPORT_NAME,
&imported_name);
check_gsserr("gss_import_name", major, minor);
(void)gss_release_buffer(&minor, &exported_name);
printf("\n");
display_canon_name("Re-imported name", imported_name, &mech_krb5);
printf("Re-imported attributes:\n\n");
enumerate_attributes(imported_name, 0);
(void)gss_release_name(&minor, &imported_name);
}
static void
test_greet_authz_data(gss_name_t name)
{
OM_uint32 major, minor;
gss_buffer_desc attr;
gss_buffer_desc value;
attr.value = "urn:greet:greeting";
attr.length = strlen((char *)attr.value);
major = gss_delete_name_attribute(&minor, name, &attr);
if (major == GSS_S_UNAVAILABLE) {
fprintf(stderr, "Warning: greet_client plugin not installed\n");
exit(1);
}
check_gsserr("gss_delete_name_attribute", major, minor);
value.value = "Hello, acceptor world!";
value.length = strlen((char *)value.value);
major = gss_set_name_attribute(&minor, name, 1, &attr, &value);
if (major == GSS_S_UNAVAILABLE)
return;
check_gsserr("gss_set_name_attribute", major, minor);
}
static void
test_map_name_to_any(gss_name_t name)
{
OM_uint32 major, minor;
gss_buffer_desc type_id;
krb5_pac pac;
krb5_context context = NULL;
krb5_error_code ret;
size_t len, i;
krb5_ui_4 *types;
type_id.value = "mspac";
type_id.length = strlen((char *)type_id.value);
major = gss_map_name_to_any(&minor, name, 1, &type_id, (gss_any_t *)&pac);
if (major == GSS_S_UNAVAILABLE)
return;
check_gsserr("gss_map_name_to_any", major, minor);
ret = krb5_init_context(&context);
check_k5err(context, "krb5_init_context", ret);
if (krb5_pac_get_types(context, pac, &len, &types) == 0) {
printf("PAC buffer types:");
for (i = 0; i < len; i++)
printf(" %d", types[i]);
printf("\n");
free(types);
}
(void)gss_release_any_name_mapping(&minor, name, &type_id,
(gss_any_t *)&pac);
}
static void
init_accept_sec_context(gss_cred_id_t verifier_cred_handle)
{
OM_uint32 major, minor, flags;
gss_name_t source_name = GSS_C_NO_NAME, target_name = GSS_C_NO_NAME;
gss_ctx_id_t initiator_context, acceptor_context;
gss_OID mech = use_spnego ? &mech_spnego : &mech_krb5;
major = gss_inquire_cred(&minor, verifier_cred_handle, &target_name, NULL,
NULL, NULL);
check_gsserr("gss_inquire_cred", major, minor);
display_canon_name("Target name", target_name, &mech_krb5);
flags = GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG;
establish_contexts(mech, verifier_cred_handle, verifier_cred_handle,
target_name, flags, &initiator_context,
&acceptor_context, &source_name, NULL, NULL);
display_canon_name("Source name", source_name, &mech_krb5);
enumerate_attributes(source_name, 1);
test_export_import_name(source_name);
test_map_name_to_any(source_name);
(void)gss_release_name(&minor, &source_name);
(void)gss_release_name(&minor, &target_name);
(void)gss_delete_sec_context(&minor, &initiator_context, NULL);
(void)gss_delete_sec_context(&minor, &acceptor_context, NULL);
}
int
main(int argc, char *argv[])
{
OM_uint32 minor, major;
gss_cred_id_t cred_handle = GSS_C_NO_CREDENTIAL;
gss_OID_set mechs, actual_mechs = GSS_C_NO_OID_SET;
gss_name_t tmp_name, name;
if (argc > 1 && strcmp(argv[1], "--spnego") == 0) {
use_spnego++;
argc--;
argv++;
}
if (argc < 2) {
fprintf(stderr, "Usage: %s [--spnego] principal [keytab]\n", argv[0]);
exit(1);
}
tmp_name = import_name(argv[1]);
major = gss_canonicalize_name(&minor, tmp_name, &mech_krb5, &name);
check_gsserr("gss_canonicalze_name", major, minor);
(void)gss_release_name(&minor, &tmp_name);
test_greet_authz_data(name);
if (argc >= 3) {
major = krb5_gss_register_acceptor_identity(argv[2]);
check_gsserr("krb5_gss_register_acceptor_identity", major, minor);
}
mechs = use_spnego ? &mechset_spnego : &mechset_krb5;
/* get default cred */
major = gss_acquire_cred(&minor, name, GSS_C_INDEFINITE, mechs, GSS_C_BOTH,
&cred_handle, &actual_mechs, NULL);
check_gsserr("gss_acquire_cred", major, minor);
(void)gss_release_oid_set(&minor, &actual_mechs);
init_accept_sec_context(cred_handle);
printf("\n");
(void)gss_release_cred(&minor, &cred_handle);
(void)gss_release_oid_set(&minor, &actual_mechs);
(void)gss_release_name(&minor, &name);
return 0;
}
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