Temporarily revert to old crypto code

[meshlink] / src / net_setup.c

diff --git a/src/net_setup.c b/src/net_setup.c
index 8aecfcdcd5d3603a496647a5f7421359288ba2b6..b8fb4f0205d3f174cd04147a5a6c142f76fd3888 100644 (file)
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -28,9 +28,10 @@
 #include <openssl/err.h>
 #include <openssl/evp.h>
 
-#include "avl_tree.h"
+#include "splay_tree.h"
 #include "conf.h"
 #include "connection.h"
+#include "control.h"
 #include "device.h"
 #include "graph.h"
 #include "logger.h"
@@ -46,8 +47,7 @@
 char *myport;
 static struct event device_ev;
 
-bool read_rsa_public_key(connection_t *c)
-{
+bool read_rsa_public_key(connection_t *c) {
        FILE *fp;
        char *fname;
        char *key;
@@ -147,8 +147,7 @@ bool read_rsa_public_key(connection_t *c)
        return false;
 }
 
-bool read_rsa_private_key(void)
-{
+bool read_rsa_private_key(void) {
        FILE *fp;
        char *fname, *key, *pubkey;
        struct stat s;
@@ -208,11 +207,40 @@ bool read_rsa_private_key(void)
        return true;
 }
 
+static struct event keyexpire_event;
+
+static void keyexpire_handler(int fd, short events, void *data) {
+       regenerate_key();
+}
+
+void regenerate_key() {
+       RAND_pseudo_bytes((unsigned char *)myself->key, myself->keylength);
+
+       if(timeout_initialized(&keyexpire_event)) {
+               ifdebug(STATUS) logger(LOG_INFO, _("Regenerating symmetric key"));
+               event_del(&keyexpire_event);
+               send_key_changed(broadcast, myself);
+       } else {
+               timeout_set(&keyexpire_event, keyexpire_handler, NULL);
+       }
+
+       event_add(&keyexpire_event, &(struct timeval){keylifetime, 0});
+
+       if(myself->cipher) {
+               EVP_CIPHER_CTX_init(&packet_ctx);
+               if(!EVP_DecryptInit_ex(&packet_ctx, myself->cipher, NULL, (unsigned char *)myself->key, (unsigned char *)myself->key + myself->cipher->key_len)) {
+                       logger(LOG_ERR, _("Error during initialisation of cipher for %s (%s): %s"),
+                                       myself->name, myself->hostname, ERR_error_string(ERR_get_error(), NULL));
+                       abort();
+               }
+
+       }
+}
+
 /*
   Configure node_t myself and set up the local sockets (listen only)
 */
-bool setup_myself(void)
-{
+bool setup_myself(void) {
        config_t *cfg;
        subnet_t *subnet;
        char *name, *hostname, *mode, *afname, *cipher, *digest;
@@ -368,23 +396,11 @@ bool setup_myself(void)
        myself->connection->outcipher = EVP_bf_ofb();
 
        myself->key = xmalloc(myself->keylength);
-       RAND_pseudo_bytes((unsigned char *)myself->key, myself->keylength);
 
        if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
                keylifetime = 3600;
 
-       keyexpires = now + keylifetime;
-       
-       if(myself->cipher) {
-               EVP_CIPHER_CTX_init(&packet_ctx);
-               if(!EVP_DecryptInit_ex(&packet_ctx, myself->cipher, NULL, (unsigned char *)myself->key, (unsigned char *)myself->key + myself->cipher->key_len)) {
-                       logger(LOG_ERR, _("Error during initialisation of cipher for %s (%s): %s"),
-                                       myself->name, myself->hostname, ERR_error_string(ERR_get_error(), NULL));
-                       return false;
-               }
-
-       }
-
+       regenerate_key();
        /* Check if we want to use message authentication codes... */
 
        if(get_config_string
@@ -510,10 +526,8 @@ bool setup_myself(void)
                                  EV_READ|EV_PERSIST,
                                  handle_new_meta_connection, NULL);
                if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) {
-                       logger(LOG_WARNING, _("event_add failed: %s"), strerror(errno));
-                       close(listen_socket[listen_sockets].tcp);
-                       close(listen_socket[listen_sockets].udp);
-                       continue;
+                       logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno));
+                       abort();
                }
 
                event_set(&listen_socket[listen_sockets].ev_udp,
@@ -521,11 +535,8 @@ bool setup_myself(void)
                                  EV_READ|EV_PERSIST,
                                  handle_incoming_vpn_data, NULL);
                if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
-                       logger(LOG_WARNING, _("event_add failed: %s"), strerror(errno));
-                       close(listen_socket[listen_sockets].tcp);
-                       close(listen_socket[listen_sockets].udp);
-                       event_del(&listen_socket[listen_sockets].ev_tcp);
-                       continue;
+                       logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno));
+                       abort();
                }
 
                ifdebug(CONNECTIONS) {
@@ -558,12 +569,9 @@ bool setup_myself(void)
 /*
   setup all initial network connections
 */
-bool setup_network_connections(void)
-{
+bool setup_network_connections(void) {
        cp();
 
-       now = time(NULL);
-
        init_connections();
        init_subnets();
        init_nodes();
@@ -596,9 +604,8 @@ bool setup_network_connections(void)
 /*
   close all open network connections
 */
-void close_network_connections(void)
-{
-       avl_node_t *node, *next;
+void close_network_connections(void) {
+       splay_node_t *node, *next;
        connection_t *c;
        char *envp[5];
        int i;