contrib/network/analyzer/netcat/files/quit-timer.patch

Index: netcat-openbsd-1.89/netcat.c
===================================================================
--- netcat-openbsd-1.89.orig/netcat.c	2008-06-19 16:49:57.000000000 -0400
+++ netcat-openbsd-1.89/netcat.c	2008-06-19 16:50:46.000000000 -0400
@@ -47,6 +47,7 @@
 #include <errno.h>
 #include <netdb.h>
 #include <poll.h>
+#include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -82,6 +83,7 @@
 int	nflag;					/* Don't do name look up */
 char   *Pflag;					/* Proxy username */
 char   *pflag;					/* Localport flag */
+int	qflag = -1;				/* Quit after some secs */
 int	rflag;					/* Random ports flag */
 char   *sflag;					/* Source Address */
 int	tflag;					/* Telnet Emulation */
@@ -114,6 +116,7 @@
 
 static int connect_with_timeout(int fd, const struct sockaddr *sa, 
 		                socklen_t salen, int ctimeout);
+static void quit();
 
 int
 main(int argc, char *argv[])
@@ -137,7 +140,7 @@
 	sv = NULL;
 
 	while ((ch = getopt(argc, argv,
-	    "46Ddhi:jklnP:p:rSs:tT:Uuvw:X:x:zC")) != -1) {
+	    "46Ddhi:jklnP:p:q:rSs:tT:Uuvw:X:x:zC")) != -1) {
 		switch (ch) {
 		case '4':
 			family = AF_INET;
@@ -187,6 +190,9 @@
 		case 'p':
 			pflag = optarg;
 			break;
+		case 'q':
+			qflag = (int)strtoul(optarg, &endp, 10);
+			break;
 		case 'r':
 			rflag = 1;
 			break;
@@ -756,7 +762,17 @@
 		    }
 		    else if (pfd[1].revents & POLLHUP) {
 		    shutdown_wr:
-			shutdown(nfd, SHUT_WR);
+			/* if the user asked to exit on EOF, do it */
+			if (qflag == 0) {
+				 shutdown(nfd, SHUT_WR);
+				 close(wfd);
+				 exit(0);
+			}
+			/* if user asked to die after a while, arrange for it */
+			if (qflag > 0) {
+				 signal(SIGALRM, quit);
+				 alarm(qflag);
+			}
 			pfd[1].fd = -1;
 			pfd[1].events = 0;
 		    }
@@ -951,6 +967,7 @@
 	\t-n		Suppress name/port resolutions\n\
 	\t-P proxyuser\tUsername for proxy authentication\n\
 	\t-p port\t	Specify local port for remote connects\n\
+	\t-q secs\t	quit after EOF on stdin and delay of secs\n\
 	\t-r		Randomize remote ports\n "
 #ifdef TCP_MD5SIG
 "	\t-S		Enable the TCP MD5 signature option\n"
@@ -979,3 +996,13 @@
 	if (ret)
 		exit(1);
 }
+
+/*
+ * quit()
+ * handler for a "-q" timeout (exit 0 instead of 1)
+ */
+static void quit()
+{
+	/* XXX: should explicitly close fds here */
+	exit(0);
+}