From e657eb874cab9a39ec2310d6b478526bb5206e94 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Wed, 6 Aug 2014 14:11:57 +0200
Subject: show banner in relation to start time

---
 nullshell.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/nullshell.c b/nullshell.c
index 0b24ef0..7422b4a 100644
--- a/nullshell.c
+++ b/nullshell.c
@@ -8,6 +8,7 @@
  * by Mario A. Valdez-Ramirez (http://www.mariovaldez.net/)
  */
 
+#include <inttypes.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -26,9 +27,14 @@ void sig_callback(int signal) {
 
 int main(int argc, char **argv) {
 	time_t now;
+	uint8_t start;
 	char *ssh_connection, *ssh_client, *ssh_tty;
 	char * string = BANNER;
 
+	/* get the start time and calculate modulo */
+	time(&now);
+	start = (now / 30) % 30;
+
 	/* read environment variables */
 	ssh_connection = getenv("SSH_CONNECTION");
 	ssh_client = getenv("SSH_CLIENT");
@@ -57,7 +63,7 @@ int main(int argc, char **argv) {
 		fflush(NULL);
 		if (*string == 0) {
 			time(&now);
-			if ((now / 30) % 30 > 0)
+			if ((now / 30) % 30 != start)
 				string = ctime(&now);
 			else
 				string = BANNER;
-- 
cgit v1.2.3-54-g00ecf