add krb5ccache_dir and krb5ccname_template option

The configuration options krb5ccache_dir and krb5ccname_template
are added to the Kerberos provider to create the user's credential
caches the same way as pam_krb5 does. Due to the design of the sssd
and the supported ccache types of MIT Kerberos only files are
allowed.

1 files changed, 292 insertions, 0 deletions

diff --git a/server/tests/krb5_utils-tests.c b/server/tests/krb5_utils-tests.c
new file mode 100644
index 000000000..1ebebe6a1
--- /dev/null
+++ b/server/tests/krb5_utils-tests.c
@@ -0,0 +1,292 @@
+/*
+    SSSD
+
+    Kerberos 5 Backend Module -- Utilities tests 
+
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (C) 2009 Red Hat
+
+    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/>.
+*/
+
+#include <stdlib.h>
+#include <check.h>
+
+#include "providers/krb5/krb5_utils.h"
+#include "providers/krb5/krb5_auth.h"
+
+#define BASE "/abc/def"
+
+#define USERNAME "testuser"
+#define UID "12345"
+#define PRINCIPLE_NAME "testuser@EXAMPLE.COM"
+#define REALM "REALM.ORG"
+#define HOME_DIRECTORY "/home/testuser"
+#define CCACHE_DIR "/var/tmp"
+#define PID "4321"
+
+TALLOC_CTX *tmp_ctx = NULL;
+struct krb5child_req *kr;
+
+void setup_talloc_context(void)
+{
+    int ret;
+    struct pam_data *pd;
+    struct krb5_ctx *krb5_ctx;
+    fail_unless(tmp_ctx == NULL, "Talloc context already initialized.");
+    tmp_ctx = talloc_new(NULL);
+    fail_unless(tmp_ctx != NULL, "Cannot create talloc context.");
+
+    kr = talloc_zero(tmp_ctx, struct krb5child_req);
+    fail_unless(kr != NULL, "Cannot create krb5child_req structure.");
+
+    pd = talloc_zero(tmp_ctx, struct pam_data);
+    fail_unless(pd != NULL, "Cannot create pam_data structure.");
+
+    krb5_ctx = talloc_zero(tmp_ctx, struct krb5_ctx);
+    fail_unless(pd != NULL, "Cannot create krb5_ctx structure.");
+
+    pd->user = USERNAME;
+    pd->pw_uid = atoi(UID);
+    pd->upn = PRINCIPLE_NAME;
+    pd->cli_pid = atoi(PID);
+
+    krb5_ctx->realm = REALM;
+    krb5_ctx->ccache_dir = CCACHE_DIR;
+
+    kr->homedir = HOME_DIRECTORY;
+
+    kr->pd = pd;
+    kr->krb5_ctx = krb5_ctx;
+
+}
+
+void free_talloc_context(void)
+{
+    int ret;
+    fail_unless(tmp_ctx != NULL, "Talloc context already freed.");
+    ret = talloc_free(tmp_ctx);
+    fail_unless(ret == 0, "Connot free talloc context.");
+}
+
+START_TEST(test_multiple_substitutions)
+{
+    char *test_template = BASE"_%u_%U_%u";
+    char *expected = BASE"_"USERNAME"_"UID"_"USERNAME;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_username)
+{
+    char *test_template = BASE"_%u";
+    char *expected = BASE"_"USERNAME;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_uid)
+{
+    char *test_template = BASE"_%U";
+    char *expected = BASE"_"UID;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_upn)
+{
+    char *test_template = BASE"_%p";
+    char *expected = BASE"_"PRINCIPLE_NAME;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_realm)
+{
+    char *test_template = BASE"_%r";
+    char *expected = BASE"_"REALM;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_home)
+{
+    char *test_template = BASE"_%h";
+    char *expected = BASE"_"HOME_DIRECTORY;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_ccache_dir)
+{
+    char *test_template = BASE"_%d";
+    char *expected = BASE"_"CCACHE_DIR;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_pid)
+{
+    char *test_template = BASE"_%P";
+    char *expected = BASE"_"PID;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_percent)
+{
+    char *test_template = BASE"_%%";
+    char *expected = BASE"_%";
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, expected) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, expected);
+}
+END_TEST
+
+START_TEST(test_unknow_template)
+{
+    char *test_template = BASE"_%X";
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result == NULL, "Unknown template [%s] should fail.",
+                test_template);
+}
+END_TEST
+
+START_TEST(test_NULL)
+{
+    char *test_template = NULL;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result == NULL, "Expected NULL as a result for an empty input.",
+                test_template);
+}
+END_TEST
+
+START_TEST(test_no_substitution)
+{
+    char *test_template = BASE;
+    char *result;
+
+    result = expand_ccname_template(tmp_ctx, kr, test_template);
+
+    fail_unless(result != NULL, "Cannot expand template [%s].", test_template);
+    fail_unless(strcmp(result, test_template) == 0,
+                "Expansion failed, result [%s], expected [%s].",
+                result, test_template);
+}
+END_TEST
+
+Suite *krb5_utils_suite (void)
+{
+    Suite *s = suite_create ("krb5_utils");
+
+    TCase *tc_ccname_template = tcase_create ("ccname_template");
+    tcase_add_checked_fixture (tc_ccname_template, setup_talloc_context,
+                               free_talloc_context);
+    tcase_add_test (tc_ccname_template, test_no_substitution);
+    tcase_add_test (tc_ccname_template, test_NULL);
+    tcase_add_test (tc_ccname_template, test_unknow_template);
+    tcase_add_test (tc_ccname_template, test_username);
+    tcase_add_test (tc_ccname_template, test_uid);
+    tcase_add_test (tc_ccname_template, test_upn);
+    tcase_add_test (tc_ccname_template, test_realm);
+    tcase_add_test (tc_ccname_template, test_home);
+    tcase_add_test (tc_ccname_template, test_ccache_dir);
+    tcase_add_test (tc_ccname_template, test_pid);
+    tcase_add_test (tc_ccname_template, test_percent);
+    tcase_add_test (tc_ccname_template, test_multiple_substitutions);
+    suite_add_tcase (s, tc_ccname_template);
+
+    return s;
+}
+
+int main(void)
+{
+  int number_failed;
+  Suite *s = krb5_utils_suite ();
+  SRunner *sr = srunner_create (s);
+  srunner_run_all (sr, CK_NORMAL);
+  number_failed = srunner_ntests_failed (sr);
+  srunner_free (sr);
+  return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+