File telnet-bsd-1.2-fix-infinite-loop.patch of Package telnet.22278

diff -urN telnet-bsd-1.2/telnet/commands.c telnet-bsd-1.2_patched/telnet/commands.c
--- telnet-bsd-1.2/telnet/commands.c	2005-06-02 10:12:51.000000000 +0200
+++ telnet-bsd-1.2_patched/telnet/commands.c	2014-09-30 16:07:39.772644812 +0200
@@ -2534,8 +2534,7 @@
       env_export ((unsigned char *) "USER");
     }
   call (status, "status", "notmuch", 0);
-  if (sigsetjmp (peerdied, 1) == 0)
-    telnet (user);
+  telnet (user);
   NetClose (net);
   ExitString ("Connection closed by foreign host.\r\n", 1);
    /*NOTREACHED*/ return 0;
diff -urN telnet-bsd-1.2/telnet/externs.h telnet-bsd-1.2_patched/telnet/externs.h
--- telnet-bsd-1.2/telnet/externs.h	2005-06-01 13:42:23.000000000 +0200
+++ telnet-bsd-1.2_patched/telnet/externs.h	2014-09-30 16:09:03.141437234 +0200
@@ -174,7 +174,6 @@
     SetNetTrace (char *);	/* Function to change where debugging goes */
 
 extern sigjmp_buf
-    peerdied,
     toplevel;		/* For error conditions. */
 
 /* authenc.c */
diff -urN telnet-bsd-1.2/telnet/network.c telnet-bsd-1.2_patched/telnet/network.c
--- telnet-bsd-1.2/telnet/network.c	2004-02-13 22:52:24.000000000 +0100
+++ telnet-bsd-1.2_patched/telnet/network.c	2014-09-30 16:10:05.365071096 +0200
@@ -142,7 +142,7 @@
 	    perror(hostname);
 	    (void)NetClose(net);
 	    ring_clear_mark(&netoring);
-	    siglongjmp(peerdied, -1);
+	    ExitString("Connection closed by foreign host.\n", 1);
 	    /*NOTREACHED*/
 	}
 	n = 0;
diff -urN telnet-bsd-1.2/telnet/sys_bsd.c telnet-bsd-1.2_patched/telnet/sys_bsd.c
--- telnet-bsd-1.2/telnet/sys_bsd.c	2004-02-14 14:20:04.000000000 +0100
+++ telnet-bsd-1.2_patched/telnet/sys_bsd.c	2014-09-30 16:30:14.601380247 +0200
@@ -778,15 +778,6 @@
 
     /* ARGSUSED */
 static void
-deadpeer (int sig)
-{
-  (void) sig;
-  setcommandmode ();
-  siglongjmp (peerdied, -1);
-}
-
-    /* ARGSUSED */
-static void
 intr (int sig)
 {
   (void) sig;
@@ -856,7 +847,7 @@
 {
   (void) signal (SIGINT, intr);
   (void) signal (SIGQUIT, intr2);
-  (void) signal (SIGPIPE, deadpeer);
+  (void) signal(SIGPIPE, SIG_IGN);
 #ifdef	SIGWINCH
   (void) signal (SIGWINCH, sendwin);
 #endif
diff -urN telnet-bsd-1.2/telnet/telnet.c telnet-bsd-1.2_patched/telnet/telnet.c
--- telnet-bsd-1.2/telnet/telnet.c	2005-06-02 10:09:46.000000000 +0200
+++ telnet-bsd-1.2_patched/telnet/telnet.c	2014-09-30 16:13:57.158453184 +0200
@@ -107,7 +107,6 @@
 static int telrcv_state;
 
 sigjmp_buf toplevel;
-sigjmp_buf peerdied;
 
 int flushline;
 int linemode;
diff -urN telnet-bsd-1.2/telnet/terminal.c telnet-bsd-1.2_patched/telnet/terminal.c
--- telnet-bsd-1.2/telnet/terminal.c	2005-06-01 17:33:09.000000000 +0200
+++ telnet-bsd-1.2_patched/telnet/terminal.c	2014-09-30 16:17:52.934863547 +0200
@@ -88,7 +88,8 @@
 
 
 /*
- *		Send as much data as possible to the terminal.
+ *		Send as much data as possible to the terminal, else exits if
+ *		it encounters a permanent failure when writing to the tty.
  *
  *		Return value:
  *			-1: No useful work done, data waiting to go out.
@@ -130,8 +131,19 @@
 	}
 	ring_consumed(&ttyoring, n);
     }
-    if (n < 0)
-	return -1;
+     if (n < 0) {
+	if (errno == EAGAIN || errno == EINTR) {
+	    return -1;
+	} else {
+	    ring_consumed(&ttyoring, ring_full_count(&ttyoring));
+	    setconnmode(0);
+	    setcommandmode();
+	    NetClose(net);
+	    fprintf(stderr, "Write error on local output.\n");
+	    exit(1);
+	}
+ 	return -1;
+    }
     if (n == n0) {
 	if (n0)
 	    return -1;