/*
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) 2014-2017 Guus Sliepen <guus@meshlink.io>
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
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 1.1.4.11 2003/07/17 15:06:26 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"
#include "conf.h"
#include "connection.h"
#include "logger.h"
+#include "meshlink_internal.h"
#include "meta.h"
#include "net.h"
#include "netutl.h"
#include "protocol.h"
#include "utils.h"
-/* Status and error notification routines */
-
-int send_status(connection_t *c, int statusno, char *statusstring)
-{
- cp();
+int maxoutbufsize = 0;
- if(!statusstring)
- statusstring = "Status";
-
- return send_request(c, "%d %d %s", STATUS, statusno, statusstring);
-}
+/* Status and error notification routines */
-int status_h(connection_t *c)
-{
+bool status_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
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",
- c->name, c->hostname);
- return -1;
+ if(sscanf(request, "%*d %d " MAX_STRING, &statusno, statusstring) != 2) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s", "STATUS", c->name);
+ return false;
}
- ifdebug(STATUS) logger(LOG_NOTICE, _("Status message from %s (%s): %d: %s"),
- c->name, c->hostname, statusno, statusstring);
+ logger(mesh, MESHLINK_INFO, "Status message from %s: %d: %s", c->name, statusno, statusstring);
- return 0;
+ return true;
}
-int send_error(connection_t *c, int err, char *errstring)
-{
- cp();
-
- if(!errstring)
- errstring = "Error";
-
- return send_request(c, "%d %d %s", ERROR, err, errstring);
-}
-
-int error_h(connection_t *c)
-{
+bool error_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
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",
- c->name, c->hostname);
- return -1;
+ if(sscanf(request, "%*d %d " MAX_STRING, &err, errorstring) != 2) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s", "ERROR", c->name);
+ return false;
}
- ifdebug(ERROR) logger(LOG_NOTICE, _("Error message from %s (%s): %d: %s"),
- c->name, c->hostname, err, errorstring);
-
- terminate_connection(c, c->status.active);
+ logger(mesh, MESHLINK_INFO, "Error message from %s: %d: %s", c->name, err, errorstring);
- return 0;
+ return false;
}
-int send_termreq(connection_t *c)
-{
- cp();
-
- return send_request(c, "%d", TERMREQ);
+bool termreq_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
+ (void)mesh;
+ (void)c;
+ (void)request;
+ return false;
}
-int termreq_h(connection_t *c)
-{
- cp();
-
- terminate_connection(c, c->status.active);
+bool send_ping(meshlink_handle_t *mesh, connection_t *c) {
+ c->status.pinged = true;
+ c->last_ping_time = mesh->loop.now.tv_sec;
- return 0;
+ return send_request(mesh, c, NULL, "%d", PING);
}
-int send_ping(connection_t *c)
-{
- cp();
-
- c->status.pinged = 1;
- c->last_ping_time = now;
-
- return send_request(c, "%d", PING);
+bool ping_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
+ (void)request;
+ return send_pong(mesh, c);
}
-int ping_h(connection_t *c)
-{
- cp();
-
- return send_pong(c);
+bool send_pong(meshlink_handle_t *mesh, connection_t *c) {
+ return send_request(mesh, c, NULL, "%d", PONG);
}
-int send_pong(connection_t *c)
-{
- cp();
-
- return send_request(c, "%d", PONG);
-}
+bool pong_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
+ (void)mesh;
+ (void)request;
+ c->status.pinged = false;
-int pong_h(connection_t *c)
-{
- cp();
+ /* Successful connection, reset timeout if this is an outgoing connection. */
- c->status.pinged = 0;
+ // TODO: completely remove this outgoing, let the autoconnect algorithm handle it
+ if(c->outgoing) {
+ c->outgoing->timeout = 0;
+ c->outgoing->state = OUTGOING_START;
- /* Succesful connection, reset timeout if this is an outgoing connection. */
+ if(c->outgoing->ai) {
+ freeaddrinfo(c->outgoing->ai);
+ }
- if(c->outgoing)
- c->outgoing->timeout = 0;
+ c->outgoing->ai = NULL;
+ c->outgoing->aip = NULL;
+ }
- return 0;
+ return true;
}
/* Sending and receiving packets via TCP */
-int send_tcppacket(connection_t *c, vpn_packet_t *packet)
-{
- int x;
-
- cp();
-
- /* Evil hack. */
-
- x = send_request(c, "%d %hd", PACKET, packet->len);
-
- if(x)
- return x;
-
- return send_meta(c, packet->data, packet->len);
-}
-
-int tcppacket_h(connection_t *c)
-{
+bool tcppacket_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
short int len;
- cp();
-
- if(sscanf(c->buffer, "%*d %hd", &len) != 1) {
- logger(LOG_ERR, _("Got bad %s from %s (%s)"), "PACKET", c->name,
- c->hostname);
- return -1;
+ if(sscanf(request, "%*d %hd", &len) != 1) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s", "PACKET", c->name);
+ return false;
}
- /* Set reqlen to len, this will tell receive_meta() that a tcppacket is coming. */
-
- c->tcplen = len;
-
- return 0;
+ // This should never happen with MeshLink.
+ return false;
}