X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol_misc.c;h=05afbce2894983bd27444e6d6e3567bafb235ff9;hp=66f8980afa96fde8d409c09137a50a258220ee88;hb=8a6f278fd2606c0a8f133f05df83b2649eacf6c3;hpb=83263b74460656ba557fd9bb84dc27258549e9cd

diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index 66f8980a..05afbce2 100644
--- a/src/protocol_misc.c
+++ b/src/protocol_misc.c
@@ -1,7 +1,7 @@
 /*
     protocol_misc.c -- handle the meta-protocol, miscellaneous functions
-    Copyright (C) 1999-2003 Ivo Timmermans <ivo@o2w.nl>,
-                  2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+    Copyright (C) 1999-2005 Ivo Timmermans,
+                  2000-2012 Guus Sliepen <guus@tinc-vpn.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -13,11 +13,9 @@
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-    $Id: protocol_misc.c,v 1.1.4.13 2003/07/24 12:08:16 guus Exp $
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
 #include "system.h"
@@ -31,61 +29,51 @@
 #include "protocol.h"
 #include "utils.h"
 
-/* Status and error notification routines */
+int maxoutbufsize = 0;
 
-bool send_status(connection_t *c, int statusno, const char *statusstring)
-{
-	cp();
+/* Status and error notification routines */
 
+bool send_status(connection_t *c, int statusno, const char *statusstring) {
 	if(!statusstring)
 		statusstring = "Status";
 
 	return send_request(c, "%d %d %s", STATUS, statusno, statusstring);
 }
 
-bool status_h(connection_t *c)
-{
+bool status_h(connection_t *c) {
 	int statusno;
 	char statusstring[MAX_STRING_SIZE];
 
-	cp();
-
 	if(sscanf(c->buffer, "%*d %d " MAX_STRING, &statusno, statusstring) != 2) {
-		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "STATUS",
+		logger(LOG_ERR, "Got bad %s from %s (%s)", "STATUS",
 			   c->name, c->hostname);
 		return false;
 	}
 
-	ifdebug(STATUS) logger(LOG_NOTICE, _("Status message from %s (%s): %d: %s"),
+	ifdebug(STATUS) logger(LOG_NOTICE, "Status message from %s (%s): %d: %s",
 			   c->name, c->hostname, statusno, statusstring);
 
 	return true;
 }
 
-bool send_error(connection_t *c, int err, const char *errstring)
-{
-	cp();
-
+bool send_error(connection_t *c, int err, const char *errstring) {
 	if(!errstring)
 		errstring = "Error";
 
 	return send_request(c, "%d %d %s", ERROR, err, errstring);
 }
 
-bool error_h(connection_t *c)
-{
+bool error_h(connection_t *c) {
 	int err;
 	char errorstring[MAX_STRING_SIZE];
 
-	cp();
-
 	if(sscanf(c->buffer, "%*d %d " MAX_STRING, &err, errorstring) != 2) {
-		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ERROR",
+		logger(LOG_ERR, "Got bad %s from %s (%s)", "ERROR",
 			   c->name, c->hostname);
 		return false;
 	}
 
-	ifdebug(ERROR) logger(LOG_NOTICE, _("Error message from %s (%s): %d: %s"),
+	ifdebug(ERROR) logger(LOG_NOTICE, "Error message from %s (%s): %d: %s",
 			   c->name, c->hostname, err, errorstring);
 
 	terminate_connection(c, c->status.active);
@@ -93,82 +81,68 @@ bool error_h(connection_t *c)
 	return true;
 }
 
-bool send_termreq(connection_t *c)
-{
-	cp();
-
+bool send_termreq(connection_t *c) {
 	return send_request(c, "%d", TERMREQ);
 }
 
-bool termreq_h(connection_t *c)
-{
-	cp();
-
+bool termreq_h(connection_t *c) {
 	terminate_connection(c, c->status.active);
 
 	return true;
 }
 
-bool send_ping(connection_t *c)
-{
-	cp();
-
+bool send_ping(connection_t *c) {
 	c->status.pinged = true;
 	c->last_ping_time = now;
 
 	return send_request(c, "%d", PING);
 }
 
-bool ping_h(connection_t *c)
-{
-	cp();
-
+bool ping_h(connection_t *c) {
 	return send_pong(c);
 }
 
-bool send_pong(connection_t *c)
-{
-	cp();
-
+bool send_pong(connection_t *c) {
 	return send_request(c, "%d", PONG);
 }
 
-bool pong_h(connection_t *c)
-{
-	cp();
-
+bool pong_h(connection_t *c) {
 	c->status.pinged = false;
 
 	/* Succesful connection, reset timeout if this is an outgoing connection. */
 
-	if(c->outgoing)
+	if(c->outgoing) {
 		c->outgoing->timeout = 0;
+		c->outgoing->cfg = NULL;
+		if(c->outgoing->ai)
+			freeaddrinfo(c->outgoing->ai);
+		c->outgoing->ai = NULL;
+		c->outgoing->aip = NULL;
+	}
 
 	return true;
 }
 
 /* Sending and receiving packets via TCP */
 
-bool send_tcppacket(connection_t *c, vpn_packet_t *packet)
-{
-	cp();
+bool send_tcppacket(connection_t *c, const vpn_packet_t *packet) {
+	/* If there already is a lot of data in the outbuf buffer, discard this packet.
+           We use a very simple Random Early Drop algorithm. */
 
-	/* Evil hack. */
+	if(2.0 * c->outbuflen / (float)maxoutbufsize - 1 > (float)rand()/(float)RAND_MAX)
+		return true;
 
 	if(!send_request(c, "%d %hd", PACKET, packet->len))
 		return false;
 
-	return send_meta(c, packet->data, packet->len);
+	return send_meta(c, (char *)packet->data, packet->len) && flush_meta(c);
 }
 
-bool tcppacket_h(connection_t *c)
-{
+bool tcppacket_h(connection_t *c) {
 	short int len;
 
-	cp();
-
 	if(sscanf(c->buffer, "%*d %hd", &len) != 1) {
-		logger(LOG_ERR, _("Got bad %s from %s (%s)"), "PACKET", c->name,
+		logger(LOG_ERR, "Got bad %s from %s (%s)", "PACKET", c->name,
 			   c->hostname);
 		return false;
 	}