Forgot to merge new files from pre5.

src/protocol_misc.c

@@ -0,0 +1,193 @@
+/*
+    protocol_misc.c -- handle the meta-protocol, miscellaneous functions
+    Copyright (C) 1999-2002 Ivo Timmermans <itimmermans@bigfoot.com>,
+                  2000-2002 Guus Sliepen <guus@sliepen.warande.net>
+
+    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
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    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 1.1.4.1 2002/02/11 10:05:58 guus Exp $
+*/
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include <utils.h>
+
+#include "conf.h"
+#include "net.h"
+#include "netutl.h"
+#include "protocol.h"
+#include "meta.h"
+#include "connection.h"
+
+#include "system.h"
+
+/* Status and error notification routines */
+
+int send_status(connection_t *c, int statusno, char *statusstring)
+{
+cp
+  if(!statusstring)
+    statusstring = status_text[statusno];
+cp
+  return send_request(c, "%d %d %s", STATUS, statusno, statusstring);
+}
+
+int status_h(connection_t *c)
+{
+  int statusno;
+  char statusstring[MAX_STRING_SIZE];
+cp
+  if(sscanf(c->buffer, "%*d %d "MAX_STRING, &statusno, statusstring) != 2)
+    {
+       syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "STATUS",
+              c->name, c->hostname);
+       return -1;
+    }
+
+  if(debug_lvl >= DEBUG_STATUS)
+    {
+      syslog(LOG_NOTICE, _("Status message from %s (%s): %s: %s"),
+             c->name, c->hostname, status_text[statusno], statusstring);
+    }
+
+cp
+  return 0;
+}
+
+int send_error(connection_t *c, int err, char *errstring)
+{
+cp
+  if(!errstring)
+    errstring = strerror(err);
+  return send_request(c, "%d %d %s", ERROR, err, errstring);
+}
+
+int error_h(connection_t *c)
+{
+  int err;
+  char errorstring[MAX_STRING_SIZE];
+cp
+  if(sscanf(c->buffer, "%*d %d "MAX_STRING, &err, errorstring) != 2)
+    {
+       syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "ERROR",
+              c->name, c->hostname);
+       return -1;
+    }
+
+  if(debug_lvl >= DEBUG_ERROR)
+    {
+      syslog(LOG_NOTICE, _("Error message from %s (%s): %s: %s"),
+             c->name, c->hostname, strerror(err), errorstring);
+    }
+
+  terminate_connection(c, c->status.active);
+cp
+  return 0;
+}
+
+int send_termreq(connection_t *c)
+{
+cp
+  return send_request(c, "%d", TERMREQ);
+}
+
+int termreq_h(connection_t *c)
+{
+cp
+  terminate_connection(c, c->status.active);
+cp
+  return 0;
+}
+
+int send_ping(connection_t *c)
+{
+cp
+  c->status.pinged = 1;
+  c->last_ping_time = time(NULL);
+cp
+  return send_request(c, "%d", PING);
+}
+
+int ping_h(connection_t *c)
+{
+cp
+  return send_pong(c);
+}
+
+int send_pong(connection_t *c)
+{
+cp
+  return send_request(c, "%d", PONG);
+}
+
+int pong_h(connection_t *c)
+{
+cp
+  c->status.pinged = 0;
+cp
+  return 0;
+}
+
+/* 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;
+cp
+  return send_meta(c, packet->data, packet->len);
+}
+
+int tcppacket_h(connection_t *c)
+{
+  short int len;
+cp  
+  if(sscanf(c->buffer, "%*d %hd", &len) != 1)
+    {
+      syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "PACKET", c->name, c->hostname);
+      return -1;
+    }
+
+  /* Set reqlen to len, this will tell receive_meta() that a tcppacket is coming. */
+
+  c->tcplen = len;
+cp
+  return 0;
+}
+
+/* Status strings */
+
+char (*status_text[]) = {
+  "Warning",
+};
+
+/* Error strings */
+
+char (*error_text[]) = {
+  "Error",
+};