From c818ce8f02b38c4d473f610a33e26b5fd7899b29 Mon Sep 17 00:00:00 2001
From: Marcela Maslanova <marca@dhcp-lab-135.englab.brq.redhat.com>
Date: Mon, 12 Nov 2007 13:34:21 +0100
Subject: [PATCH] Time zones are now supported. Setting in cron table
 CRON_TZ=SomeTimeZone does jobs in this time zone. There was problem with
 syslog, because it print local time into log only, when I remove ifdef parts
 from misc.c. With ifdef parts print out the time of 'highest' time zone,
 which could be bug of rsyslog.

---
 src/cron.c | 31 ++++++++++++++++++++++++++-----
 src/misc.c |  2 --
 2 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/src/cron.c b/src/cron.c
index 671afe5..5100430 100644
--- a/src/cron.c
+++ b/src/cron.c
@@ -296,6 +296,7 @@ run_reboot_jobs(cron_db *db) {
 
 static void
 find_jobs(int vtime, cron_db *db, int doWild, int doNonWild) {
+	char orig_tz, *job_tz;
 	time_t virtualSecond  = vtime * SECONDS_PER_MINUTE;
 	struct tm *tm = gmtime(&virtualSecond);
 	int minute, hour, dom, month, dow;
@@ -304,11 +305,24 @@ find_jobs(int vtime, cron_db *db, int doWild, int doNonWild) {
 
 	/* make 0-based values out of these so we can use them as indicies
 	 */
-	minute = tm->tm_min -FIRST_MINUTE;
-	hour = tm->tm_hour -FIRST_HOUR;
-	dom = tm->tm_mday -FIRST_DOM;
-	month = tm->tm_mon +1 /* 0..11 -> 1..12 */ -FIRST_MONTH;
-	dow = tm->tm_wday -FIRST_DOW;
+#define maketime(tz1, tz2) do { \
+	char *t = tz1; \
+	if (t != NULL && *t != '\0') \
+		setenv("TZ", t, 1); \
+	else if ((tz2) != NULL) \
+		setenv("TZ", (tz2), 1); \
+	else \
+		unsetenv("TZ"); \
+	tm = localtime(&StartTime); \
+	minute = tm->tm_min -FIRST_MINUTE; \
+	hour = tm->tm_hour -FIRST_HOUR; \
+	dom = tm->tm_mday -FIRST_DOM; \
+	month = tm->tm_mon +1 /* 0..11 -> 1..12 */ -FIRST_MONTH; \
+	dow = tm->tm_wday -FIRST_DOW; \
+	} while (0)
+
+	orig_tz = getenv("TZ");
+	maketime(NULL, orig_tz);
 
 	Debug(DSCH, ("[%ld] tick(%d,%d,%d,%d,%d) %s %s\n",
 		     (long)getpid(), minute, hour, dom, month, dow,
@@ -325,6 +339,9 @@ find_jobs(int vtime, cron_db *db, int doWild, int doNonWild) {
 			Debug(DSCH|DEXT, ("user [%s:%ld:%ld:...] cmd=\"%s\"\n",
 			    e->pwd->pw_name, (long)e->pwd->pw_uid,
 			    (long)e->pwd->pw_gid, e->cmd))
+
+			job_tz = env_get("CRON_TZ", e->envp);
+			maketime(job_tz, orig_tz);
 			if (bit_test(e->minute, minute) &&
 			    bit_test(e->hour, hour) &&
 			    bit_test(e->month, month) &&
@@ -340,6 +357,10 @@ find_jobs(int vtime, cron_db *db, int doWild, int doNonWild) {
 			}
 		}
 	}
+	if (orig_tz != NULL)
+		setenv("TZ", orig_tz, 1);
+	else
+		unsetenv("TZ");
 }
 
 /*
diff --git a/src/misc.c b/src/misc.c
index 30c7ef5..918e7e0 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -506,12 +506,10 @@ log_it(const char *username, PID_T xpid, const char *event, const char *detail)
 #if defined(LOG_FILE) || DEBUGGING
 	PID_T pid = xpid;
 #endif
-#if defined(LOG_FILE)
 	char *msg;
 	TIME_T now = time((TIME_T) 0);
 	struct tm *t = localtime(&now);
 	int msg_size;
-#endif /*LOG_FILE*/
 
 #if defined(LOG_FILE)
 	/* we assume that MAX_TEMPSTR will hold the date, time, &punctuation.
-- 
2.40.0