+++ /dev/null
-/*
- protocol_edge.c -- handle the meta-protocol, edges
- 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_edge.c,v 1.2 2002/05/02 11:50:07 zarq Exp $
-*/
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <errno.h>
-
-#include <utils.h>
-#include <xalloc.h>
-#include <avl_tree.h>
-
-#include "conf.h"
-#include "interface.h"
-#include "net.h"
-#include "netutl.h"
-#include "protocol.h"
-#include "meta.h"
-#include "connection.h"
-#include "node.h"
-#include "edge.h"
-#include "graph.h"
-#include "logging.h"
-
-#include "system.h"
-
-int send_add_edge(connection_t *c, edge_t *e)
-{
- int x;
- char *from_udpaddress, *from_udpport;
- char *to_udpaddress, *to_udpport;
-cp
- /* sockaddr2str(&e->from.tcpaddress, &from_tcpaddress, &from_tcpport); */
- sockaddr2str(&e->from.udpaddress, &from_udpaddress, &from_udpport);
- /* sockaddr2str(&e->to.tcpaddress, &to_tcpaddress, &to_tcpport); */
- sockaddr2str(&e->to.udpaddress, &to_udpaddress, &to_udpport);
- x = send_request(c, "%d %lx %s %s %s %s %s %s %lx %d", ADD_EDGE, random(),
- e->from.node->name, from_udpaddress, from_udpport,
- e->to.node->name, to_udpaddress, to_udpport,
- e->options, e->weight);
- /* free(from_tcpaddress); */
- /* free(from_tcpport); */
- free(from_udpaddress);
- free(from_udpport);
- /* free(to_tcpaddress); */
- /* free(to_tcpport); */
- free(to_udpaddress);
- free(to_udpport);
-cp
- return x;
-}
-
-int add_edge_h(connection_t *c)
-{
- connection_t *other;
- edge_t *e;
- node_t *from, *to;
- char from_name[MAX_STRING_SIZE];
- char to_name[MAX_STRING_SIZE];
- char from_address[MAX_STRING_SIZE];
- /* char from_tcpport[MAX_STRING_SIZE]; */
- char from_udpport[MAX_STRING_SIZE];
- char to_address[MAX_STRING_SIZE];
- /* char to_tcpport[MAX_STRING_SIZE]; */
- char to_udpport[MAX_STRING_SIZE];
- sockaddr_t from_udpaddress;
- sockaddr_t to_udpaddress;
- long int options;
- int weight;
- avl_node_t *node;
-cp
- if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING" "MAX_STRING" "MAX_STRING" "MAX_STRING" "MAX_STRING" %lx %d",
- from_name, from_address, from_udpport,
- to_name, to_address, to_udpport,
- &options, &weight) != 8)
- {
- syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_EDGE", c->name, c->hostname);
- return -1;
- }
-
- /* Check if names are valid */
-
- if(check_id(from_name))
- {
- syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name, c->hostname, _("invalid name"));
- return -1;
- }
-
- if(check_id(to_name))
- {
- syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name, c->hostname, _("invalid name"));
- return -1;
- }
-
- if(seen_request(c->buffer))
- return 0;
-
- /* Lookup nodes */
-
- from = lookup_node(from_name);
-
- if(!from)
- {
- from = new_node();
- from->name = xstrdup(from_name);
- node_add(from);
- }
-
- to = lookup_node(to_name);
-
- if(!to)
- {
- to = new_node();
- to->name = xstrdup(to_name);
- node_add(to);
- }
-
- /* Convert addresses */
-
- /* from_tcpaddress = str2sockaddr(from_address, from_tcpport); */
- from_udpaddress = str2sockaddr(from_address, from_udpport);
- /* to_tcpaddress = str2sockaddr(to_address, to_tcpport); */
- to_udpaddress = str2sockaddr(to_address, to_udpport);
-
- /* Check if edge already exists */
-
- e = lookup_edge(from, to);
-
- if(e)
- {
- if(e->weight != weight || e->options != options
- || ((e->from.node == from) && (sockaddrcmp(&e->from.udpaddress, &from_udpaddress)|| sockaddrcmp(&e->to.udpaddress, &to_udpaddress)))
- || ((e->from.node == to) && (sockaddrcmp(&e->from.udpaddress, &to_udpaddress) || sockaddrcmp(&e->to.udpaddress, &from_udpaddress)))
- )
- {
- if(from == myself || to == myself)
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not match existing entry"), "ADD_EDGE", c->name, c->hostname);
- send_add_edge(c, e);
- return 0;
- }
- else
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_WARNING, _("Got %s from %s (%s) which does not match existing entry"), "ADD_EDGE", c->name, c->hostname);
- edge_del(e);
- }
- }
- else
- return 0;
- }
- else if(from == myself || to == myself)
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not exist"), "ADD_EDGE", c->name, c->hostname);
- e = new_edge();
- e->from.node = from;
- e->to.node = to;
- send_del_edge(c, e);
- free_edge(e);
- return 0;
- }
-
- e = new_edge();
- e->from.node = from;
- /* e->from.tcpaddress = from_tcpaddress; */
- e->from.udpaddress = from_udpaddress;
- e->to.node = to;
- /* e->to.tcpaddress = to_tcpaddress; */
- e->to.udpaddress = to_udpaddress;
- e->options = options;
- e->weight = weight;
- edge_add(e);
-
- /* Tell the rest about the new edge */
-
- for(node = connection_tree->head; node; node = node->next)
- {
- other = (connection_t *)node->data;
- if(other->status.active && other != c)
- send_request(other, "%s", c->buffer);
- }
-
- /* Run MST before or after we tell the rest? */
-
- graph();
-cp
- return 0;
-}
-
-int send_del_edge(connection_t *c, edge_t *e)
-{
-cp
- return send_request(c, "%d %lx %s %s", DEL_EDGE, random(),
- e->from.node->name, e->to.node->name);
-}
-
-int del_edge_h(connection_t *c)
-{
- edge_t *e;
- char from_name[MAX_STRING_SIZE];
- char to_name[MAX_STRING_SIZE];
- node_t *from, *to;
- connection_t *other;
- avl_node_t *node;
-cp
- if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING"", from_name, to_name) != 2)
- {
- syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_EDGE",
- c->name, c->hostname);
- return -1;
- }
-
- /* Check if names are valid */
-
- if(check_id(from_name))
- {
- syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name, c->hostname, _("invalid name"));
- return -1;
- }
-
- if(check_id(to_name))
- {
- syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name, c->hostname, _("invalid name"));
- return -1;
- }
-
- if(seen_request(c->buffer))
- return 0;
-
- /* Lookup nodes */
-
- from = lookup_node(from_name);
-
- if(!from)
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"), "DEL_EDGE", c->name, c->hostname);
- return 0;
- }
-
- to = lookup_node(to_name);
-
- if(!to)
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"), "DEL_EDGE", c->name, c->hostname);
- return 0;
- }
-
- /* Check if edge exists */
-
- e = lookup_edge(from, to);
-
- if(!e)
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_WARNING, _("Got %s from %s (%s) which does not appear in the edge tree"), "DEL_EDGE", c->name, c->hostname);
- return 0;
- }
-
- if(e->from.node == myself || e->to.node == myself)
- {
- if(debug_lvl >= DEBUG_PROTOCOL)
- syslog(LOG_WARNING, _("Got %s from %s (%s) for ourself"), "DEL_EDGE", c->name, c->hostname);
- send_add_edge(c, e); /* Send back a correction */
- return 0;
- }
-
- /* Tell the rest about the deleted edge */
-
- for(node = connection_tree->head; node; node = node->next)
- {
- other = (connection_t *)node->data;
- if(other->status.active && other != c)
- send_request(other, "%s", c->buffer);
- }
-
- /* Delete the edge */
-
- edge_del(e);
-
- /* Run MST before or after we tell the rest? */
-
- graph();
-cp
- return 0;
-}
projects / tinc / blobdiff