Vendor import of OpenSSH 3.7.1p2.

crypto/openssh/clientloop.c

@@ -59,7 +59,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: clientloop.c,v 1.107 2003/04/01 10:22:21 markus Exp $");
+RCSID("$OpenBSD: clientloop.c,v 1.112 2003/06/28 16:23:06 deraadt Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -395,9 +395,9 @@ client_suspend_self(Buffer *bin, Buffer *bout, Buffer *berr)
 
 	/* Flush stdout and stderr buffers. */
 	if (buffer_len(bout) > 0)
-		atomicio(write, fileno(stdout), buffer_ptr(bout), buffer_len(bout));
+		atomicio(vwrite, fileno(stdout), buffer_ptr(bout), buffer_len(bout));
 	if (buffer_len(berr) > 0)
-		atomicio(write, fileno(stderr), buffer_ptr(berr), buffer_len(berr));
+		atomicio(vwrite, fileno(stderr), buffer_ptr(berr), buffer_len(berr));
 
 	leave_raw_mode();
 
@@ -490,13 +490,13 @@ process_cmdline(void)
 	if (*s == 0)
 		goto out;
 	if (strlen(s) < 2 || s[0] != '-' || !(s[1] == 'L' || s[1] == 'R')) {
-		log("Invalid command.");
+		logit("Invalid command.");
 		goto out;
 	}
 	if (s[1] == 'L')
 		local = 1;
 	if (!local && !compat20) {
-		log("Not supported for SSH protocol version 1.");
+		logit("Not supported for SSH protocol version 1.");
 		goto out;
 	}
 	s += 2;
@@ -507,24 +507,24 @@ process_cmdline(void)
 	    sfwd_port, buf, sfwd_host_port) != 3 &&
 	    sscanf(s, "%5[0-9]/%255[^/]/%5[0-9]",
 	    sfwd_port, buf, sfwd_host_port) != 3) {
-		log("Bad forwarding specification.");
+		logit("Bad forwarding specification.");
 		goto out;
 	}
 	if ((fwd_port = a2port(sfwd_port)) == 0 ||
 	    (fwd_host_port = a2port(sfwd_host_port)) == 0) {
-		log("Bad forwarding port(s).");
+		logit("Bad forwarding port(s).");
 		goto out;
 	}
 	if (local) {
 		if (channel_setup_local_fwd_listener(fwd_port, buf,
 		    fwd_host_port, options.gateway_ports) < 0) {
-			log("Port forwarding failed.");
+			logit("Port forwarding failed.");
 			goto out;
 		}
 	} else
 		channel_request_remote_forwarding(fwd_port, buf,
 		    fwd_host_port);
-	log("Forwarding port.");
+	logit("Forwarding port.");
 out:
 	signal(SIGINT, handler);
 	enter_raw_mode();
@@ -574,10 +574,23 @@ process_escapes(Buffer *bin, Buffer *bout, Buffer *berr, char *buf, int len)
 				/* We have been continued. */
 				continue;
 
+			case 'B':
+				if (compat20) {
+					snprintf(string, sizeof string,
+					    "%cB\r\n", escape_char);
+					buffer_append(berr, string,
+					    strlen(string));
+					channel_request_start(session_ident,
+					    "break", 0);
+					packet_put_int(1000);
+					packet_send();
+				}
+				continue;
+
 			case 'R':
 				if (compat20) {
 					if (datafellows & SSH_BUG_NOREKEY)
-						log("Server does not support re-keying");
+						logit("Server does not support re-keying");
 					else
 						need_rekeying = 1;
 				}
@@ -636,6 +649,7 @@ process_escapes(Buffer *bin, Buffer *bout, Buffer *berr, char *buf, int len)
 "%c?\r\n\
 Supported escape sequences:\r\n\
 %c.  - terminate connection\r\n\
+%cB  - send a BREAK to the remote system\r\n\
 %cC  - open a command line\r\n\
 %cR  - Request rekey (SSH protocol 2 only)\r\n\
 %c^Z - suspend ssh\r\n\
@@ -646,7 +660,7 @@ Supported escape sequences:\r\n\
 (Note that escapes are only recognized immediately after newline.)\r\n",
 				    escape_char, escape_char, escape_char, escape_char,
 				    escape_char, escape_char, escape_char, escape_char,
-				    escape_char, escape_char);
+				    escape_char, escape_char, escape_char);
 				buffer_append(berr, string, strlen(string));
 				continue;
 
@@ -968,9 +982,8 @@ client_loop(int have_pty, int escape_char_arg, int ssh2_chan_id)
 		/* Do channel operations unless rekeying in progress. */
 		if (!rekeying) {
 			channel_after_select(readset, writeset);
-
-			if (need_rekeying) {
-				debug("user requests rekeying");
+			if (need_rekeying || packet_need_rekeying()) {
+				debug("need rekeying");
 				xxx_kex->done = 0;
 				kex_send_kexinit(xxx_kex);
 				need_rekeying = 0;
@@ -1146,7 +1159,7 @@ client_request_forwarded_tcpip(const char *request_type, int rchan)
 	c = channel_new("forwarded-tcpip",
 	    SSH_CHANNEL_CONNECTING, sock, sock, -1,
 	    CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
-	    xstrdup(originator_address), 1);
+	    originator_address, 1);
 	xfree(originator_address);
 	xfree(listen_address);
 	return c;
@@ -1182,8 +1195,7 @@ client_request_x11(const char *request_type, int rchan)
 		return NULL;
 	c = channel_new("x11",
 	    SSH_CHANNEL_X11_OPEN, sock, sock, -1,
-	    CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0,
-	    xstrdup("x11"), 1);
+	    CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0, "x11", 1);
 	c->force_drain = 1;
 	return c;
 }
@@ -1205,7 +1217,7 @@ client_request_agent(const char *request_type, int rchan)
 	c = channel_new("authentication agent connection",
 	    SSH_CHANNEL_OPEN, sock, sock, -1,
 	    CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
-	    xstrdup("authentication agent connection"), 1);
+	    "authentication agent connection", 1);
 	c->force_drain = 1;
 	return c;
 }