Merge branch 'master' into 1.1

[meshlink] / src / protocol_misc.c

diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index 66f8980afa96fde8d409c09137a50a258220ee88..b8d2f67d39c6158484b89bc1ae91686c3faeaca8 100644 (file)
--- 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,
+                  2000-2006 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
@@ -17,7 +17,7 @@
     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 $
+    $Id$
 */
 
 #include "system.h"
@@ -31,6 +31,8 @@
 #include "protocol.h"
 #include "utils.h"
 
+int maxoutbufsize = 0;
+
 /* Status and error notification routines */
 
 bool send_status(connection_t *c, int statusno, const char *statusstring)
@@ -43,14 +45,14 @@ bool send_status(connection_t *c, int statusno, const char *statusstring)
        return send_request(c, "%d %d %s", STATUS, statusno, statusstring);
 }
 
-bool status_h(connection_t *c)
+bool status_h(connection_t *c, char *request)
 {
        int statusno;
        char statusstring[MAX_STRING_SIZE];
 
        cp();
 
-       if(sscanf(c->buffer, "%*d %d " MAX_STRING, &statusno, statusstring) != 2) {
+       if(sscanf(request, "%*d %d " MAX_STRING, &statusno, statusstring) != 2) {
                logger(LOG_ERR, _("Got bad %s from %s (%s)"), "STATUS",
                           c->name, c->hostname);
                return false;
@@ -72,14 +74,14 @@ bool send_error(connection_t *c, int err, const char *errstring)
        return send_request(c, "%d %d %s", ERROR, err, errstring);
 }
 
-bool error_h(connection_t *c)
+bool error_h(connection_t *c, char *request)
 {
        int err;
        char errorstring[MAX_STRING_SIZE];
 
        cp();
 
-       if(sscanf(c->buffer, "%*d %d " MAX_STRING, &err, errorstring) != 2) {
+       if(sscanf(request, "%*d %d " MAX_STRING, &err, errorstring) != 2) {
                logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ERROR",
                           c->name, c->hostname);
                return false;
@@ -88,9 +90,7 @@ bool error_h(connection_t *c)
        ifdebug(ERROR) logger(LOG_NOTICE, _("Error message from %s (%s): %d: %s"),
                           c->name, c->hostname, err, errorstring);
 
-       terminate_connection(c, c->status.active);
-
-       return true;
+       return false;
 }
 
 bool send_termreq(connection_t *c)
@@ -100,13 +100,11 @@ bool send_termreq(connection_t *c)
        return send_request(c, "%d", TERMREQ);
 }
 
-bool termreq_h(connection_t *c)
+bool termreq_h(connection_t *c, char *request)
 {
        cp();
 
-       terminate_connection(c, c->status.active);
-
-       return true;
+       return false;
 }
 
 bool send_ping(connection_t *c)
@@ -114,12 +112,12 @@ bool send_ping(connection_t *c)
        cp();
 
        c->status.pinged = true;
-       c->last_ping_time = now;
+       c->last_ping_time = time(NULL);
 
        return send_request(c, "%d", PING);
 }
 
-bool ping_h(connection_t *c)
+bool ping_h(connection_t *c, char *request)
 {
        cp();
 
@@ -133,7 +131,7 @@ bool send_pong(connection_t *c)
        return send_request(c, "%d", PONG);
 }
 
-bool pong_h(connection_t *c)
+bool pong_h(connection_t *c, char *request)
 {
        cp();
 
@@ -153,21 +151,25 @@ bool send_tcppacket(connection_t *c, vpn_packet_t *packet)
 {
        cp();
 
-       /* Evil hack. */
+       /* If there already is a lot of data in the outbuf buffer, discard this packet.
+           We use a very simple Random Early Drop algorithm. */
+
+       if(2.0 * c->buffer->output->off / (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);
 }
 
-bool tcppacket_h(connection_t *c)
+bool tcppacket_h(connection_t *c, char *request)
 {
        short int len;
 
        cp();
 
-       if(sscanf(c->buffer, "%*d %hd", &len) != 1) {
+       if(sscanf(request, "%*d %hd", &len) != 1) {
                logger(LOG_ERR, _("Got bad %s from %s (%s)"), "PACKET", c->name,
                           c->hostname);
                return false;