Keep btimed around to hand out btime packets until no one has asked for one

in 30 seconds.

Fix the servce name in the btimed xinetd config file

1 files changed, 19 insertions, 9 deletions

diff --git a/btimed.c b/btimed.c
index 82d3c94..0a3b609 100644
--- a/btimed.c
+++ b/btimed.c
@@ -21,7 +21,8 @@ int
 main(int argc, char **argv)
 {
 	int sd;
-	char msg[BTIME_MSGLEN];
+	char inmsg[BTIME_MSGLEN];
+	char outmsg[BTIME_MSGLEN];
 	struct sockaddr_in cli_addr;
 	int cli_addr_len;
 	ssize_t nbytes;
@@ -31,15 +32,24 @@ main(int argc, char **argv)
 	/* Running out of (x)inetd the socket was duped onto stdin. */
 	sd = fileno(stdin);
 
-	memset(&cli_addr, 0, sizeof cli_addr);
-	cli_addr_len = sizeof cli_addr;
-	nbytes = recvfrom(sd, &msg, BTIME_MSGLEN, MSG_WAITALL, 
-	         (struct sockaddr *)&cli_addr, &cli_addr_len);
+	/* We want to exit after 30 seconds of inactivity */
+	alarm(30);
 
-	memset(msg, 0, BTIME_MSGLEN);
-	sprintf(msg, "%u\n", get_btime());
-	sendto(sd, &msg, BTIME_MSGLEN, MSG_DONTWAIT, 
-	       (struct sockaddr *)&cli_addr, cli_addr_len);
+	/* Generate the standard btime message */
+	memset(outmsg, 0, BTIME_MSGLEN);
+	sprintf(outmsg, "%u\n", get_btime());
+
+	for (;;) {
+		memset(&cli_addr, 0, sizeof cli_addr);
+		cli_addr_len = sizeof cli_addr;
+		nbytes = recvfrom(sd, &inmsg, BTIME_MSGLEN, MSG_WAITALL, 
+		         (struct sockaddr *)&cli_addr, &cli_addr_len);
+
+		sendto(sd, &outmsg, BTIME_MSGLEN, MSG_DONTWAIT, 
+		       (struct sockaddr *)&cli_addr, cli_addr_len);
+		/* We want to exit after 30 seconds of inactivity */
+		alarm(30);
+	}
 
 	return 0;
 }