/*
protocol.c -- handle the meta-protocol, basic functions
- Copyright (C) 1999-2001 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2000,2001 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 1999-2001 Ivo Timmermans <ivo@o2w.nl>,
+ 2000,2001 Guus Sliepen <guus@sliepen.eu.org>
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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol.c,v 1.28.4.122 2002/02/10 21:57:54 guus Exp $
+ $Id: protocol.c,v 1.28.4.133 2002/09/04 16:26:44 guus Exp $
*/
#include "config.h"
#include <errno.h>
#include <utils.h>
+#include <xalloc.h>
#include "conf.h"
#include "protocol.h"
#include "system.h"
+avl_tree_t *past_request_tree;
+
int check_id(char *id)
{
int i;
va_start(args, format);
len = vsnprintf(buffer, MAXBUFSIZE, format, args);
- request = va_arg(args, int);
va_end(args);
if(len < 0 || len > MAXBUFSIZE-1)
{
- syslog(LOG_ERR, _("Output buffer overflow while sending %s to %s (%s)"), request_name[request], c->name, c->hostname);
+ syslog(LOG_ERR, _("Output buffer overflow while sending request to %s (%s)"), c->name, c->hostname);
return -1;
}
if(debug_lvl >= DEBUG_PROTOCOL)
{
+ sscanf(buffer, "%d", &request);
if(debug_lvl >= DEBUG_META)
syslog(LOG_DEBUG, _("Sending %s to %s (%s): %s"), request_name[request], c->name, c->hostname, buffer);
else
buffer[len++] = '\n';
cp
- return send_meta(c, buffer, len);
+ if(c == broadcast)
+ return broadcast_meta(NULL, buffer, len);
+ else
+ return send_meta(c, buffer, len);
+}
+
+int forward_request(connection_t *from)
+{
+ int request;
+cp
+ if(debug_lvl >= DEBUG_PROTOCOL)
+ {
+ sscanf(from->buffer, "%d", &request);
+ if(debug_lvl >= DEBUG_META)
+ syslog(LOG_DEBUG, _("Broadcasting %s from %s (%s): %s"), request_name[request], from->name, from->hostname, from->buffer);
+ else
+ syslog(LOG_DEBUG, _("Broadcasting %s from %s (%s)"), request_name[request], from->name, from->hostname);
+ }
+
+ from->buffer[from->reqlen - 1] = '\n';
+cp
+ return broadcast_meta(from, from->buffer, from->reqlen);
}
int receive_request(connection_t *c)
return 0;
}
+int past_request_compare(past_request_t *a, past_request_t *b)
+{
+cp
+ return strcmp(a->request, b->request);
+}
+
+void free_past_request(past_request_t *r)
+{
+cp
+ if(r->request)
+ free(r->request);
+ free(r);
+cp
+}
+
+void init_requests(void)
+{
+cp
+ past_request_tree = avl_alloc_tree((avl_compare_t)past_request_compare, (avl_action_t)free_past_request);
+cp
+}
+
+void exit_requests(void)
+{
+cp
+ avl_delete_tree(past_request_tree);
+cp
+}
+
+int seen_request(char *request)
+{
+ past_request_t p, *new;
+cp
+ p.request = request;
+
+ if(avl_search(past_request_tree, &p))
+ {
+ if(debug_lvl >= DEBUG_SCARY_THINGS)
+ syslog(LOG_DEBUG, _("Already seen request"));
+ return 1;
+ }
+ else
+ {
+ new = (past_request_t *)xmalloc(sizeof(*new));
+ new->request = xstrdup(request);
+ new->firstseen = now;
+ avl_insert(past_request_tree, new);
+ return 0;
+ }
+cp
+}
+
+void age_past_requests(void)
+{
+ avl_node_t *node, *next;
+ past_request_t *p;
+ int left = 0, deleted = 0;
+cp
+ for(node = past_request_tree->head; node; node = next)
+ {
+ next = node->next;
+ p = (past_request_t *)node->data;
+ if(p->firstseen + pingtimeout < now)
+ avl_delete_node(past_request_tree, node), deleted++;
+ else
+ left++;
+ }
+
+ if(debug_lvl >= DEBUG_SCARY_THINGS && left + deleted)
+ syslog(LOG_DEBUG, _("Aging past requests: deleted %d, left %d\n"), deleted, left);
+cp
+}
+
/* Jumptable for the request handlers */
int (*request_handlers[])(connection_t*) = {
id_h, metakey_h, challenge_h, chal_reply_h, ack_h,
status_h, error_h, termreq_h,
ping_h, pong_h,
-// add_node_h, del_node_h,
add_subnet_h, del_subnet_h,
add_edge_h, del_edge_h,
key_changed_h, req_key_h, ans_key_h,
"ID", "METAKEY", "CHALLENGE", "CHAL_REPLY", "ACK",
"STATUS", "ERROR", "TERMREQ",
"PING", "PONG",
-// "ADD_NODE", "DEL_NODE",
"ADD_SUBNET", "DEL_SUBNET",
"ADD_EDGE", "DEL_EDGE",
"KEY_CHANGED", "REQ_KEY", "ANS_KEY",