/*
connection.c -- connection list management
- Copyright (C) 2000 Guus Sliepen <guus@sliepen.warande.net>,
- 2000 Ivo Timmermans <itimmermans@bigfoot.com>
+ Copyright (C) 2000-2009 Guus Sliepen <guus@tinc-vpn.org>,
+ 2000-2005 Ivo Timmermans
+ 2008 Max Rijevski <maksuf@gmail.com>
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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: connection.c,v 1.1.2.6 2000/11/24 23:13:01 guus Exp $
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <syslog.h>
-
-#include <rbl.h>
+#include "system.h"
-#include "net.h" /* Don't ask. */
-#include "netutl.h"
-#include "config.h"
+#include "avl_tree.h"
#include "conf.h"
-#include <utils.h>
+#include "list.h"
+#include "logger.h"
+#include "net.h" /* Don't ask. */
+#include "netutl.h"
#include "subnet.h"
-
+#include "utils.h"
#include "xalloc.h"
-#include "system.h"
-/* Root of the connection list */
+avl_tree_t *connection_tree; /* Meta connections */
+connection_t *broadcast;
-rbltree_t *connection_tree;
-rbltree_t *id_tree;
-
-connection_t *myself = NULL;
-
-/* Initialization and callbacks */
-
-int connection_compare(connection_t *a, connection_t *b)
-{
- ipv4_t result;
- result = a->address - b->address;
- if(result)
- return result;
- else
- return a->port - b->port;
+static int connection_compare(const connection_t *a, const connection_t *b) {
+ return a < b ? -1 : a == b ? 0 : 1;
}
-int id_compare(connection_t *a, connection_t *b)
-{
- return strcmp(a->name, b->name);
+void init_connections(void) {
+ connection_tree = avl_alloc_tree((avl_compare_t) connection_compare, (avl_action_t) free_connection);
+ broadcast = new_connection();
+ broadcast->name = xstrdup("everyone");
+ broadcast->hostname = xstrdup("BROADCAST");
}
-void init_connections(void)
-{
- connection_tree = new_rbltree((rbl_compare_t)connection_compare, (rbl_action_t)free_connection);
- id_tree = new_rbltree((rbl_compare_t)id_compare, NULL);
+void exit_connections(void) {
+ avl_delete_tree(connection_tree);
+ free_connection(broadcast);
}
-/* Creation and deletion of connection elements */
+connection_t *new_connection(void) {
+ connection_t *c;
-connection_t *new_connection(void)
-{
- connection_t *p = (connection_t *)xmalloc_and_zero(sizeof(*p));
-cp
- p->subnet_tree = new_rbltree((rbl_compare_t)subnet_compare, NULL);
-cp
- return p;
-}
+ c = xmalloc_and_zero(sizeof(connection_t));
-void free_connection(connection_t *p)
-{
-cp
- if(p->sq)
- destroy_queue(p->sq);
- if(p->rq)
- destroy_queue(p->rq);
- if(p->name && p->name!=unknown)
- free(p->name);
- if(p->hostname)
- free(p->hostname);
- if(p->rsa_key)
- RSA_free(p->rsa_key);
- if(p->cipher_pktkey)
- free(p->cipher_pktkey);
- if(p->buffer)
- free(p->buffer);
- if(p->config)
- clear_config(&p->config);
- free(p);
-cp
-}
+ if(!c)
+ return NULL;
-/*
- remove all marked connections
-*/
-void prune_connection_tree(void)
-{
- rbl_t *rbl;
- connection_t *cl;
-cp
- RBL_FOREACH(connection_tree, rbl)
- {
- cl = (connection_t *) rbl->data;
- if(cl->status.remove)
- connection_del(cl);
- }
-cp
-}
+ gettimeofday(&c->start, NULL);
-/*
- free all elements of connection
-*/
-void destroy_connection_tree(void)
-{
-cp
- rbl_delete_rbltree(id_tree);
- rbl_delete_rbltree(connection_tree);
-cp
+ return c;
}
-/* Linked list management */
+void free_connection(connection_t *c) {
+ if(c->name)
+ free(c->name);
-void connection_add(connection_t *cl)
-{
-cp
- rbl_insert(connection_tree, cl);
-cp
-}
+ if(c->hostname)
+ free(c->hostname);
-void id_add(connection_t *cl)
-{
-cp
- rbl_insert(id_tree, cl);
-cp
-}
+ if(c->inkey)
+ free(c->inkey);
-void connection_del(connection_t *cl)
-{
-cp
- rbl_delete(id_tree, cl);
- rbl_delete(connection_tree, cl);
-cp
-}
+ if(c->outkey)
+ free(c->outkey);
+
+ if(c->inctx) {
+ EVP_CIPHER_CTX_cleanup(c->inctx);
+ free(c->inctx);
+ }
+
+ if(c->outctx) {
+ EVP_CIPHER_CTX_cleanup(c->outctx);
+ free(c->outctx);
+ }
+
+ if(c->mychallenge)
+ free(c->mychallenge);
-/* Lookup functions */
+ if(c->hischallenge)
+ free(c->hischallenge);
-connection_t *lookup_connection(ipv4_t address, short unsigned int port)
-{
- connection_t cl;
-cp
- cl.address = address;
- cl.port = port;
+ if(c->config_tree)
+ exit_configuration(&c->config_tree);
- return rbl_search(connection_tree, &cl);
+ if(c->outbuf)
+ free(c->outbuf);
+
+ if(c->rsa_key)
+ RSA_free(c->rsa_key);
+
+ free(c);
+}
+
+void connection_add(connection_t *c) {
+ avl_insert(connection_tree, c);
}
-connection_t *lookup_id(char *name)
-{
- connection_t cl, *p;
-cp
- cl.name = name;
- p = rbl_search(id_tree, &cl);
- if(p && p->status.active)
- return p;
- else
- return NULL;
+void connection_del(connection_t *c) {
+ avl_delete(connection_tree, c);
}
-/* Debugging */
-
-void dump_connection_list(void)
-{
- rbl_t *rbl;
- connection_t *cl;
-cp
- syslog(LOG_DEBUG, _("Connection list:"));
-
- syslog(LOG_DEBUG, _(" %s at %s port %hd flags %d sockets %d, %d status %04x"),
- myself->name, myself->hostname, myself->port, myself->flags,
- myself->socket, myself->meta_socket, myself->status);
-
- RBL_FOREACH(connection_tree, rbl)
- {
- cl = (connection_t *)rbl->data;
- syslog(LOG_DEBUG, _(" %s at %s port %hd flags %d sockets %d, %d status %04x"),
- cl->name, cl->hostname, cl->port, cl->flags,
- cl->socket, cl->meta_socket, cl->status);
- }
-
- syslog(LOG_DEBUG, _("End of connection list."));
-cp
+void dump_connections(void) {
+ avl_node_t *node;
+ connection_t *c;
+
+ logger(LOG_DEBUG, "Connections:");
+
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+ logger(LOG_DEBUG, " %s at %s options %x socket %d status %04x outbuf %d/%d/%d",
+ c->name, c->hostname, c->options, c->socket, bitfield_to_int(&c->status, sizeof c->status),
+ c->outbufsize, c->outbufstart, c->outbuflen);
+ }
+
+ logger(LOG_DEBUG, "End of connections.");
}
-int read_host_config(connection_t *cl)
-{
- char *fname;
- int x;
-cp
- asprintf(&fname, "%s/hosts/%s", confbase, cl->name);
- x = read_config_file(&cl->config, fname);
- free(fname);
-cp
- return x;
+bool read_connection_config(connection_t *c) {
+ list_node_t *node, *next;
+ size_t name_len = strlen(c->name);
+ char *fname;
+ bool x;
+
+ for(node = cmdline_conf->tail; node; node = next) {
+ config_t *cfg = (config_t *)node->data;
+ next = node->prev;
+ if (!strncmp(c->name, cfg->variable, name_len) && cfg->variable[name_len] == '.') {
+ config_t *new_cfg = new_config();
+ new_cfg->variable = xstrdup(cfg->variable + name_len + 1);
+ new_cfg->value = xstrdup(cfg->value);
+ new_cfg->file = NULL;
+ new_cfg->line = cfg->line;
+ config_add(c->config_tree, new_cfg);
+ }
+ }
+
+ xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
+ x = read_config_file(c->config_tree, fname);
+ free(fname);
+
+ return x;
}
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