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 1.1.4.17 2003/07/12 17:41:47 guus Exp $
40 #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 logger(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 logger(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 logger(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 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not match existing entry"),
134 "ADD_EDGE", c->name, c->hostname);
138 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) which does not match existing entry"),
139 "ADD_EDGE", c->name, c->hostname);
145 } else if(from == myself) {
146 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself which does not exist"),
147 "ADD_EDGE", c->name, c->hostname);
159 e->address = address;
160 e->options = options;
164 /* Tell the rest about the new edge */
168 /* Run MST before or after we tell the rest? */
175 int send_del_edge(connection_t *c, edge_t *e)
179 return send_request(c, "%d %lx %s %s", DEL_EDGE, random(),
180 e->from->name, e->to->name);
183 int del_edge_h(connection_t *c)
186 char from_name[MAX_STRING_SIZE];
187 char to_name[MAX_STRING_SIZE];
192 if(sscanf(c->buffer, "%*d %*x "MAX_STRING" "MAX_STRING, from_name, to_name) != 2) {
193 logger(LOG_ERR, _("Got bad %s from %s (%s)"), "DEL_EDGE", c->name,
198 /* Check if names are valid */
200 if(check_id(from_name)) {
201 logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
202 c->hostname, _("invalid name"));
206 if(check_id(to_name)) {
207 logger(LOG_ERR, _("Got bad %s from %s (%s): %s"), "DEL_EDGE", c->name,
208 c->hostname, _("invalid name"));
212 if(seen_request(c->buffer))
217 from = lookup_node(from_name);
220 ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
221 "DEL_EDGE", c->name, c->hostname);
225 to = lookup_node(to_name);
228 ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
229 "DEL_EDGE", c->name, c->hostname);
233 /* Check if edge exists */
235 e = lookup_edge(from, to);
238 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) which does not appear in the edge tree"),
239 "DEL_EDGE", c->name, c->hostname);
243 if(e->from == myself) {
244 ifdebug(PROTOCOL) logger(LOG_WARNING, _("Got %s from %s (%s) for ourself"),
245 "DEL_EDGE", c->name, c->hostname);
246 send_add_edge(c, e); /* Send back a correction */
250 /* Tell the rest about the deleted edge */
254 /* Delete the edge */
258 /* Run MST before or after we tell the rest? */