From 3cace03ac7a2c4ff6d3469a3d3128c79a1882e43 Mon Sep 17 00:00:00 2001
From: Pavel Reichl <preichl@redhat.com>
Date: Tue, 20 Jan 2015 16:27:41 -0500
Subject: [PATCH 12/99] UTIL: convert GeneralizedTime to unix time
New utility function *sss_utc_to_time_t* to convert GeneralizedTime to
unix time.
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
---
Makefile.am | 9 +++++---
src/tests/util-tests.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
src/util/util.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++
src/util/util.h | 3 +++
src/util/util_errors.c | 1 +
src/util/util_errors.h | 1 +
6 files changed, 121 insertions(+), 3 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index 9fe60d656403e09595ced5f623f381afbd3b2a43..210ef6ffe6ebc4772fc80bed25f2a31208c020f3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1540,15 +1540,18 @@ simple_access_tests_LDADD = \
libsss_test_common.la
util_tests_SOURCES = \
- src/tests/util-tests.c
+ src/tests/util-tests.c \
+ $(NULL)
util_tests_CFLAGS = \
$(AM_CFLAGS) \
- $(CHECK_CFLAGS)
+ $(CHECK_CFLAGS) \
+ $(NULL)
util_tests_LDADD = \
$(SSSD_LIBS) \
$(CHECK_LIBS) \
$(SSSD_INTERNAL_LTLIBS) \
- libsss_test_common.la
+ libsss_test_common.la \
+ $(NULL)
safe_format_tests_SOURCES = \
src/tests/safe-format-tests.c
diff --git a/src/tests/util-tests.c b/src/tests/util-tests.c
index 08e8b8d263c46618a0cdfb2203684305fa6dddc6..21eb02f14a7225ae9b9de4aa7f958b73f84a066d 100644
--- a/src/tests/util-tests.c
+++ b/src/tests/util-tests.c
@@ -28,6 +28,8 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
+#include <stdlib.h>
+
#include "util/util.h"
#include "util/sss_utf8.h"
#include "util/murmurhash3.h"
@@ -1000,6 +1002,54 @@ START_TEST(test_known_service)
}
END_TEST
+static void convert_time_tz(const char* tz)
+{
+ errno_t ret, ret2;
+ time_t unix_time;
+ const char *orig_tz = NULL;
+
+ orig_tz = getenv("TZ");
+ if (orig_tz == NULL) {
+ orig_tz = "";
+ }
+
+ if (tz) {
+ ret = setenv("TZ", tz, 1);
+ fail_if(ret == -1);
+ }
+
+ ret = sss_utc_to_time_t("20140801115742Z", "%Y%m%d%H%M%SZ", &unix_time);
+
+ /* restore */
+ if (orig_tz != NULL) {
+ ret2 = setenv("TZ", orig_tz, 1);
+ fail_if(ret2 == -1);
+ }
+ fail_unless(ret == EOK && difftime(1406894262, unix_time) == 0);
+}
+
+START_TEST(test_convert_time)
+{
+ const char *format = "%Y%m%d%H%M%SZ";
+ time_t unix_time;
+ errno_t ret;
+
+ ret = sss_utc_to_time_t("20150127133540P", format, &unix_time);
+ fail_unless(ret == ERR_TIMESPEC_NOT_SUPPORTED);
+ ret = sss_utc_to_time_t("0Z", format, &unix_time);
+ fail_unless(ret == EINVAL);
+ ret = sss_utc_to_time_t("000001010000Z", format, &unix_time);
+ fail_unless(ret == EINVAL);
+
+ /* test that results are still same no matter what timezone is set */
+ convert_time_tz(NULL);
+
+ convert_time_tz("GST-1");
+
+ convert_time_tz("GST-2");
+}
+END_TEST
+
Suite *util_suite(void)
{
Suite *s = suite_create("util");
@@ -1046,10 +1096,17 @@ Suite *util_suite(void)
tcase_add_test(tc_atomicio, test_atomicio_read_exact_sized_file);
tcase_add_test(tc_atomicio, test_atomicio_read_from_empty_file);
+ TCase *tc_convert_time = tcase_create("convert_time");
+ tcase_add_checked_fixture(tc_convert_time,
+ ck_leak_check_setup,
+ ck_leak_check_teardown);
+ tcase_add_test(tc_convert_time, test_convert_time);
+
suite_add_tcase (s, tc_util);
suite_add_tcase (s, tc_utf8);
suite_add_tcase (s, tc_mh3);
suite_add_tcase (s, tc_atomicio);
+ suite_add_tcase (s, tc_convert_time);
return s;
}
diff --git a/src/util/util.c b/src/util/util.c
index 2acb8604ac0c2bc7b83ee578c7bbead9a7fd44b3..c4d8bf91f89c34b21f272a9f722eabf551aba9be 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -18,6 +18,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include "config.h"
#include <ctype.h>
#include <netdb.h>
#include <poll.h>
@@ -26,6 +27,7 @@
#include <arpa/inet.h>
#include <talloc.h>
#include <dhash.h>
+#include <time.h>
#include "util/util.h"
#include "util/sss_utf8.h"
@@ -880,3 +882,54 @@ done:
return ret;
}
+
+/* Convert GeneralizedTime (http://en.wikipedia.org/wiki/GeneralizedTime)
+ * to unix time (seconds since epoch). Use UTC time zone.
+ */
+errno_t sss_utc_to_time_t(const char *str, const char *format, time_t *_unix_time)
+{
+ char *end;
+ struct tm tm;
+ size_t len;
+ time_t ut;
+
+ if (str == NULL) {
+ return EINVAL;
+ }
+
+ len = strlen(str);
+ if (str[len-1] != 'Z') {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "%s does not seem to be in UTZ time zone.\n", str);
+ return ERR_TIMESPEC_NOT_SUPPORTED;
+ }
+
+ memset(&tm, 0, sizeof(tm));
+
+ end = strptime(str, format, &tm);
+ /* not all characters from format were matched */
+ if (end == NULL) {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "String [%s] failed to match format [%s].\n", str, format);
+ return EINVAL;
+ }
+
+ /* str is 'longer' than format */
+ if (*end != '\0') {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "String [%s] is longer than format [%s].\n", str, format);
+ return EINVAL;
+ }
+
+ ut = mktime(&tm);
+ if (ut == -1) {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "mktime failed to convert [%s].\n", str);
+ return EINVAL;
+ }
+
+ tzset();
+ ut -= timezone;
+ *_unix_time = ut;
+ return EOK;
+}
diff --git a/src/util/util.h b/src/util/util.h
index bf3a9a057aed77e93949370f8651af2631d91432..22a67a55855282441379477236a323362c8bdb4d 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -636,4 +636,7 @@ int set_seuser(const char *login_name, const char *seuser_name,
const char *mlsrange);
int del_seuser(const char *login_name);
+/* convert time from generalized form to unix time */
+errno_t sss_utc_to_time_t(const char *str, const char *format, time_t *unix_time);
+
#endif /* __SSSD_UTIL_H__ */
diff --git a/src/util/util_errors.c b/src/util/util_errors.c
index 16d16fc777fc3344db8a3bdfeb3633bd5db48530..bfae5cd189902ed82ba8b7db29e85a309e4bd19c 100644
--- a/src/util/util_errors.c
+++ b/src/util/util_errors.c
@@ -65,6 +65,7 @@ struct err_string error_to_str[] = {
{ "LDAP search returned a referral" }, /* ERR_REFERRAL */
{ "Error setting SELinux user context" }, /* ERR_SELINUX_CONTEXT */
{ "Username format not allowed by re_expression" }, /* ERR_REGEX_NOMATCH */
+ { "Time specification not supported" }, /* ERR_TIMESPEC_NOT_SUPPORTED */
};
diff --git a/src/util/util_errors.h b/src/util/util_errors.h
index 97e210e31dc6501860d1490966369a0d3ebe2cc2..069d4b78aa5ed6c756affdacab99c7141b7849e4 100644
--- a/src/util/util_errors.h
+++ b/src/util/util_errors.h
@@ -90,6 +90,7 @@ enum sssd_errors {
ERR_REFERRAL,
ERR_SELINUX_CONTEXT,
ERR_REGEX_NOMATCH,
+ ERR_TIMESPEC_NOT_SUPPORTED,
ERR_LAST /* ALWAYS LAST */
};
--
2.4.0