-char (*request_name[]) = {
- "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",
- "PACKET",
-};
+ return false;
+ } else {
+ ifdebug(PROTOCOL) {
+ ifdebug(META)
+ logger(LOG_DEBUG, _("Got %s from %s (%s): %s"),
+ request_name[request], c->name, c->hostname,
+ c->buffer);
+ else
+ logger(LOG_DEBUG, _("Got %s from %s (%s)"),
+ request_name[request], c->name, c->hostname);
+ }
+ }
+
+ if((c->allow_request != ALL) && (c->allow_request != request)) {
+ logger(LOG_ERR, _("Unauthorized request from %s (%s)"), c->name,
+ c->hostname);
+ return false;
+ }
+
+ if(!request_handlers[request](c)) {
+ /* Something went wrong. Probably scriptkiddies. Terminate. */
+
+ logger(LOG_ERR, _("Error while processing %s from %s (%s)"),
+ request_name[request], c->name, c->hostname);
+ return false;
+ }
+ } else {
+ logger(LOG_ERR, _("Bogus data received from %s (%s)"),
+ c->name, c->hostname);
+ return false;
+ }
+
+ return true;
+}
+
+static int past_request_compare(const past_request_t *a, const past_request_t *b)
+{
+ return strcmp(a->request, b->request);
+}
+
+static void free_past_request(past_request_t *r)
+{
+ cp();
+
+ if(r->request)
+ free(r->request);
+
+ free(r);
+}
+
+static struct event past_request_event;
+
+bool seen_request(char *request)
+{
+ past_request_t *new, p = {0};
+
+ cp();
+
+ p.request = request;
+
+ if(avl_search(past_request_tree, &p)) {
+ ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Already seen request"));
+ return true;
+ } else {
+ new = xmalloc(sizeof(*new));
+ new->request = xstrdup(request);
+ new->firstseen = now;
+ avl_insert(past_request_tree, new);
+ event_add(&past_request_event, &(struct timeval){10, 0});
+ return false;
+ }
+}
+
+void age_past_requests(int fd, short events, void *data)
+{
+ 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 = node->data;
+
+ if(p->firstseen + pinginterval < now)
+ avl_delete_node(past_request_tree, node), deleted++;
+ else
+ left++;
+ }
+
+ if(left || deleted)
+ ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Aging past requests: deleted %d, left %d"),
+ deleted, left);
+
+ if(left)
+ event_add(&past_request_event, &(struct timeval){10, 0});
+}
+
+void init_requests(void)
+{
+ cp();
+
+ past_request_tree = avl_alloc_tree((avl_compare_t) past_request_compare, (avl_action_t) free_past_request);
+
+ timeout_set(&past_request_event, age_past_requests, NULL);
+}
+
+void exit_requests(void)
+{
+ cp();
+
+ avl_delete_tree(past_request_tree);
+
+ event_del(&past_request_event);
+}