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/** BEGIN COPYRIGHT BLOCK
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Additional permission under GPLv3 section 7:
 *
 * In the following paragraph, "GPL" means the GNU General Public
 * License, version 3 or any later version, and "Non-GPL Code" means
 * code that is governed neither by the GPL nor a license
 * compatible with the GPL.
 *
 * You may link the code of this Program with Non-GPL Code and convey
 * linked combinations including the two, provided that such Non-GPL
 * Code only links to the code of this Program through those well
 * defined interfaces identified in the file named EXCEPTION found in
 * the source code files (the "Approved Interfaces"). The files of
 * Non-GPL Code may instantiate templates or use macros or inline
 * functions from the Approved Interfaces without causing the resulting
 * work to be covered by the GPL. Only the copyright holders of this
 * Program may make changes or additions to the list of Approved
 * Interfaces.
 *
 * Authors:
 * Sumit Bose <sbose@redhat.com>
 *
 * Copyright (C) 2013 Red Hat, Inc.
 * All rights reserved.
 * END COPYRIGHT BLOCK **/

#include <check.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdbool.h>
#include <krb5/krb5.h>
#include <kdb.h>

#include "ipa-kdb/ipa_kdb.h"

#define NFS_PRINC_STRING "nfs/fully.qualified.host.name@REALM.NAME"
#define NON_NFS_PRINC_STRING "abcdef/fully.qualified.host.name@REALM.NAME"

int krb5_klog_syslog(int l, const char *format, ...)
{
    va_list ap;
    char *s = NULL;
    int ret;

    va_start(ap, format);

    ret = vasprintf(&s, format, ap);
    va_end(ap);
    if (ret < 0) {
        /* ENOMEM */
        return -1;
    }

    fprintf(stderr, "%s\n", s);
    free(s);

    return 0;
}

extern void get_authz_data_types(krb5_context context, krb5_db_entry *entry,
                                 bool *with_pac, bool *with_pad);

START_TEST(test_get_authz_data_types)
{
    bool with_pac;
    bool with_pad;
    krb5_db_entry *entry;
    struct ipadb_e_data *ied;
    size_t c;
    char *ad_none_only[] = {"NONE", NULL};
    char *ad_pad_only[] = {"PAD", NULL};
    char *ad_pac_only[] = {"MS-PAC", NULL};
    char *ad_illegal_only[] = {"abc", NULL};
    char *ad_pac_and_pad[] = {"MS-PAC", "PAD", NULL};
    char *ad_pac_and_none[] = {"MS-PAC", "NONE", NULL};
    char *ad_none_and_pad[] = {"NONE", "PAD", NULL};
    char *ad_global_pac_nfs_none[] = {"MS-PAC", "nfs:NONE", NULL};
    char *ad_global_pac_nfs_pad[] = {"MS-PAC", "nfs:PAD", NULL};
    krb5_context krb5_ctx;
    krb5_error_code kerr;
    struct ipadb_context *ipa_ctx;
    krb5_principal nfs_princ;
    krb5_principal non_nfs_princ;

    get_authz_data_types(NULL, NULL, NULL, NULL);

    with_pad = true;
    get_authz_data_types(NULL, NULL, NULL, &with_pad);
    fail_unless(!with_pad, "with_pad not false with NULL inuput.");

    with_pac = true;
    get_authz_data_types(NULL, NULL, &with_pac, NULL);
    fail_unless(!with_pac, "with_pac not false with NULL inuput.");

    with_pad = true;
    with_pac = true;
    get_authz_data_types(NULL, NULL, &with_pac, &with_pad);
    fail_unless(!with_pad, "with_pad not false with NULL inuput.");
    fail_unless(!with_pac, "with_pac not false with NULL inuput.");

    entry = calloc(1, sizeof(krb5_db_entry));
    fail_unless(entry != NULL, "calloc krb5_db_entry failed.");

    ied = calloc(1, sizeof(struct ipadb_e_data));
    fail_unless(ied != NULL, "calloc struct ipadb_e_data failed.");
    entry->e_data = (void *) ied;

    kerr = krb5_init_context(&krb5_ctx);
    fail_unless(kerr == 0, "krb5_init_context failed.");
    kerr = krb5_db_setup_lib_handle(krb5_ctx);
    fail_unless(kerr == 0, "krb5_db_setup_lib_handle failed.\n");
    ipa_ctx = calloc(1, sizeof(struct ipadb_context));
    fail_unless(ipa_ctx != NULL, "calloc failed.\n");
    ipa_ctx->kcontext = krb5_ctx;
    kerr = krb5_db_set_context(krb5_ctx, ipa_ctx);
    fail_unless(kerr == 0, "krb5_db_set_context failed.\n");

    kerr = krb5_parse_name(krb5_ctx, NFS_PRINC_STRING, &nfs_princ);
    fail_unless(kerr == 0, "krb5_parse_name failed.");

    kerr = krb5_parse_name(krb5_ctx, NON_NFS_PRINC_STRING, &non_nfs_princ);
    fail_unless(kerr == 0, "krb5_parse_name failed.");

    struct test_set {
        char **authz_data;
        char **global_authz_data;
        krb5_principal princ;
        bool exp_with_pac;
        bool exp_with_pad;
        const char *err_msg;
    } test_set[] = {
        {ad_none_only, NULL, NULL, false, false, "with only NONE in entry"},
        {ad_pac_only, NULL, NULL, true, false, "with only MS-PAC in entry"},
        {ad_pad_only, NULL, NULL, false, true, "with only PAD in entry"},
        {ad_illegal_only, NULL, NULL, false, false, "with only an invalid value in entry"},
        {ad_pac_and_pad, NULL, NULL, true, true, "with MS-PAC and PAD in entry"},
        {ad_pac_and_none, NULL, NULL, false, false, "with MS-PAC and NONE in entry"},
        {ad_none_and_pad, NULL, NULL, false, false, "with NONE and PAD in entry"},
        {NULL, ad_none_only, NULL, false, false, "with only NONE in global config"},
        {NULL, ad_pac_only, NULL, true, false, "with only MS-PAC in global config"},
        {NULL, ad_pad_only, NULL, false, true, "with only PAD in global config"},
        {NULL, ad_illegal_only, NULL, false, false, "with only an invalid value in global config"},
        {NULL, ad_pac_and_pad, NULL, true, true, "with MS-PAC and PAD in global config"},
        {NULL, ad_pac_and_none, NULL, false, false, "with MS-PAC and NONE in global config"},
        {NULL, ad_none_and_pad, NULL, false, false, "with NONE and PAD in global entry"},
        {NULL, ad_global_pac_nfs_none, NULL, true, false, "with NULL principal and PAC and nfs:NONE in global entry"},
        {NULL, ad_global_pac_nfs_none, nfs_princ, false, false, "with nfs principal and PAC and nfs:NONE in global entry"},
        {NULL, ad_global_pac_nfs_none, non_nfs_princ, true, false, "with non-nfs principal and PAC and nfs:NONE in global entry"},
        {NULL, ad_global_pac_nfs_pad, NULL, true, false, "with NULL principal and PAC and nfs:PAD in global entry"},
        {NULL, ad_global_pac_nfs_pad, nfs_princ, false, true, "with nfs principal and PAC and nfs:PAD in global entry"},
        {NULL, ad_global_pac_nfs_pad, non_nfs_princ, true, false, "with non-nfs principal and PAC and nfs:PAD in global entry"},
        {ad_none_only, ad_pac_only, NULL, false, false, "with NONE overriding PAC in global entry"},
        {ad_pad_only, ad_pac_only, NULL, false, true, "with PAC overriding PAC in global entry"},
        {ad_illegal_only, ad_pac_only, NULL, false, false, "with invalid value overriding PAC in global entry"},
        {ad_pac_and_pad, ad_pac_only, NULL, true, true, "with PAC and PAD overriding PAC in global entry"},
        {ad_none_and_pad, ad_pac_only, NULL, false, false, "with NONE and PAD overriding PAC in global entry"},
        {NULL, NULL, NULL, false, false, NULL}
    };

    for (c = 0; test_set[c].authz_data != NULL ||
                test_set[c].global_authz_data != NULL; c++) {
        ied->authz_data = test_set[c].authz_data;
        ipa_ctx->authz_data = test_set[c].global_authz_data;
        entry->princ = test_set[c].princ;
        get_authz_data_types(krb5_ctx, entry, &with_pac, &with_pad);
        fail_unless(with_pad == test_set[c].exp_with_pad, "with_pad not %s %s.",
                    test_set[c].exp_with_pad ? "true" : "false",
                    test_set[c].err_msg);
        fail_unless(with_pac == test_set[c].exp_with_pac, "with_pac not %s %s.",
                    test_set[c].exp_with_pac ? "true" : "false",
                    test_set[c].err_msg);
    }

    krb5_free_principal(krb5_ctx, nfs_princ);
    krb5_free_principal(krb5_ctx, non_nfs_princ);
    krb5_db_fini(krb5_ctx);
    krb5_free_context(krb5_ctx);
}
END_TEST

Suite * ipa_kdb_suite(void)
{
    Suite *s = suite_create("IPA kdb");

    TCase *tc_helper = tcase_create("Helper functions");
    tcase_add_test(tc_helper, test_get_authz_data_types);
    suite_add_tcase(s, tc_helper);

    return s;
}

int main(void)
{
    int number_failed;

    Suite *s = ipa_kdb_suite ();
    SRunner *sr = srunner_create (s);
    srunner_run_all (sr, CK_VERBOSE);
    number_failed = srunner_ntests_failed (sr);
    srunner_free (sr);

    return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}