2 protocol_edge.c -- handle the meta-protocol, edges
3 Copyright (C) 1999-2003 Ivo Timmermans <ivo@o2w.nl>,
4 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: protocol_edge.c,v 1.1.4.21 2003/08/28 15:27:12 guus Exp $
27 #include "connection.h"
39 bool send_add_edge(connection_t *c, const edge_t *e)
46 sockaddr2str(&e->address, &address, &port);
48 x = send_request(c, "%d %lx %s %s %s %s %lx %d", ADD_EDGE, random(),
49 e->from->name, e->to->name, address, port,
50 e->options, e->weight);
57 bool add_edge_h(connection_t *c)
61 char from_name[MAX_STRING_SIZE];
62 char to_name[MAX_STRING_SIZE];
63 char to_address[MAX_STRING_SIZE];
64 char to_port[MAX_STRING_SIZE];
71 if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING" "MAX_STRING" "MAX_STRING" %lx %d",
72 from_name, to_name, to_address, to_port, &options, &weight) != 6) {
73 logger(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_EDGE", c->name,
78 /* Check if names are valid */
80 if(!check_id(from_name)) {
81 logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name,
82 c->hostname, _("invalid name"));
86 if(!check_id(to_name)) {
87 logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name,
88 c->hostname, _("invalid name"));
92 if(seen_request(c->buffer))
97 from = lookup_node(from_name);
101 from->name = xstrdup(from_name);
105 to = lookup_node(to_name);
109 to->name = xstrdup(to_name);
113 /* Convert addresses */
115 address = str2sockaddr(to_address, to_port);
117 /* Check if edge already exists */
119 e = lookup_edge(from, to);
122 if(e->weight != weight || e->options != options || sockaddrcmp(&e->address, &address)) {
124 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not match existing entry"),
125 "ADD_EDGE", c->name, c->hostname);
129 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) which does not match existing entry"),
130 "ADD_EDGE", c->name, c->hostname);
136 } else if(from == myself) {
137 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not exist"),
138 "ADD_EDGE", c->name, c->hostname);
150 e->address = address;
151 e->options = options;
155 /* Tell the rest about the new edge */
159 /* Run MST before or after we tell the rest? */
166 bool send_del_edge(connection_t *c, const edge_t *e)
170 return send_request(c, "%d %lx %s %s", DEL_EDGE, random(),
171 e->from->name, e->to->name);
174 bool del_edge_h(connection_t *c)
177 char from_name[MAX_STRING_SIZE];
178 char to_name[MAX_STRING_SIZE];
183 if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING, from_name, to_name) != 2) {
184 logger(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_EDGE", c->name,
189 /* Check if names are valid */
191 if(!check_id(from_name)) {
192 logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
193 c->hostname, _("invalid name"));
197 if(!check_id(to_name)) {
198 logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
199 c->hostname, _("invalid name"));
203 if(seen_request(c->buffer))
208 from = lookup_node(from_name);
211 ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
212 "DEL_EDGE", c->name, c->hostname);
216 to = lookup_node(to_name);
219 ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
220 "DEL_EDGE", c->name, c->hostname);
224 /* Check if edge exists */
226 e = lookup_edge(from, to);
229 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) which does not appear in the edge tree"),
230 "DEL_EDGE", c->name, c->hostname);
234 if(e->from == myself) {
235 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself"),
236 "DEL_EDGE", c->name, c->hostname);
237 send_add_edge(c, e); /* Send back a correction */
241 /* Tell the rest about the deleted edge */
245 /* Delete the edge */
249 /* Run MST before or after we tell the rest? */
253 /* If the node is not reachable anymore but we remember it had an edge to us, clean it up */
255 if(!to->status.reachable) {
256 e = lookup_edge(to, myself);
258 send_del_edge(broadcast, e);