--- /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 1.1 2002/04/28 12:46:26 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;
+}