2 protocol_edge.c -- handle the meta-protocol, edges
3 Copyright (C) 1999-2002 Ivo Timmermans <ivo@o2w.nl>,
4 2000-2002 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 1.1.4.12 2002/09/09 21:24:48 guus Exp $
41 #include "connection.h"
48 int send_add_edge(connection_t * c, edge_t * e)
55 sockaddr2str(&e->address, &address, &port);
57 x = send_request(c, "%d %lx %s %s %s %s %lx %d", ADD_EDGE, random(),
58 e->from->name, e->to->name, address, port,
59 e->options, e->weight);
66 int add_edge_h(connection_t * c)
70 char from_name[MAX_STRING_SIZE];
71 char to_name[MAX_STRING_SIZE];
72 char to_address[MAX_STRING_SIZE];
73 char to_port[MAX_STRING_SIZE];
80 if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING" "MAX_STRING" "MAX_STRING" %lx %d",
81 from_name, to_name, to_address, to_port, &options, &weight) != 6) {
82 syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "ADD_EDGE", c->name,
87 /* Check if names are valid */
89 if(check_id(from_name)) {
90 syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name,
91 c->hostname, _("invalid name"));
95 if(check_id(to_name)) {
96 syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "ADD_EDGE", c->name,
97 c->hostname, _("invalid name"));
101 if(seen_request(c->buffer))
106 from = lookup_node(from_name);
110 from->name = xstrdup(from_name);
114 to = lookup_node(to_name);
118 to->name = xstrdup(to_name);
122 /* Convert addresses */
124 address = str2sockaddr(to_address, to_port);
126 /* Check if edge already exists */
128 e = lookup_edge(from, to);
131 if(e->weight != weight || e->options != options || sockaddrcmp(&e->address, &address)) {
133 if(debug_lvl >= DEBUG_PROTOCOL)
134 syslog(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not match existing entry"),
135 "ADD_EDGE", c->name, c->hostname);
139 if(debug_lvl >= DEBUG_PROTOCOL)
140 syslog(LOG_WARNING, _("Got %s from %s (%s) which does not match existing entry"),
141 "ADD_EDGE", c->name, c->hostname);
146 } else if(from == myself) {
147 if(debug_lvl >= DEBUG_PROTOCOL)
148 syslog(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not exist"),
149 "ADD_EDGE", c->name, c->hostname);
161 e->address = address;
162 e->options = options;
166 /* Tell the rest about the new edge */
170 /* Run MST before or after we tell the rest? */
177 int send_del_edge(connection_t * c, edge_t * e)
181 return send_request(c, "%d %lx %s %s", DEL_EDGE, random(),
182 e->from->name, e->to->name);
185 int del_edge_h(connection_t * c)
188 char from_name[MAX_STRING_SIZE];
189 char to_name[MAX_STRING_SIZE];
194 if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING, from_name, to_name) != 2) {
195 syslog(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_EDGE", c->name,
200 /* Check if names are valid */
202 if(check_id(from_name)) {
203 syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
204 c->hostname, _("invalid name"));
208 if(check_id(to_name)) {
209 syslog(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
210 c->hostname, _("invalid name"));
214 if(seen_request(c->buffer))
219 from = lookup_node(from_name);
222 if(debug_lvl >= DEBUG_PROTOCOL)
225 ("Got %s from %s (%s) which does not appear in the edge tree"),
226 "DEL_EDGE", c->name, c->hostname);
230 to = lookup_node(to_name);
233 if(debug_lvl >= DEBUG_PROTOCOL)
236 ("Got %s from %s (%s) which does not appear in the edge tree"),
237 "DEL_EDGE", c->name, c->hostname);
241 /* Check if edge exists */
243 e = lookup_edge(from, to);
246 if(debug_lvl >= DEBUG_PROTOCOL)
249 ("Got %s from %s (%s) which does not appear in the edge tree"),
250 "DEL_EDGE", c->name, c->hostname);
254 if(e->from == myself) {
255 if(debug_lvl >= DEBUG_PROTOCOL)
256 syslog(LOG_WARNING, _("Got %s from %s (%s) for ourself"),
257 "DEL_EDGE", c->name, c->hostname);
258 send_add_edge(c, e); /* Send back a correction */
262 /* Tell the rest about the deleted edge */
266 /* Delete the edge */
270 /* Run MST before or after we tell the rest? */