]> git.meshlink.io Git - meshlink/blobdiff - src/net_setup.c
Merge branch 'master' of git://tinc-vpn.org/tinc into 1.1
[meshlink] / src / net_setup.c
index eec438a80879831b1a2416fbdeefa0a9cebf6328..3285a32981805815ac9effd1b8323eae270ab397 100644 (file)
 
 #include "system.h"
 
-#include <openssl/pem.h>
-#include <openssl/rsa.h>
-#include <openssl/rand.h>
-#include <openssl/err.h>
-#include <openssl/evp.h>
-
-#include "avl_tree.h"
+#include "splay_tree.h"
+#include "cipher.h"
 #include "conf.h"
 #include "connection.h"
+#include "control.h"
 #include "device.h"
-#include "event.h"
+#include "digest.h"
+#include "ecdsa.h"
 #include "graph.h"
 #include "logger.h"
 #include "net.h"
 #include "process.h"
 #include "protocol.h"
 #include "route.h"
+#include "rsa.h"
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
 
 char *myport;
+static struct event device_ev;
 devops_t devops;
 
 char *proxyhost;
@@ -53,166 +52,238 @@ char *proxyuser;
 char *proxypass;
 proxytype_t proxytype;
 
-bool read_rsa_public_key(connection_t *c) {
+bool node_read_ecdsa_public_key(node_t *n) {
+       if(ecdsa_active(&n->ecdsa))
+               return true;
+
+       splay_tree_t *config_tree;
        FILE *fp;
        char *fname;
-       char *key;
+       char *p;
+       bool result = false;
 
-       if(!c->rsa_key) {
-               c->rsa_key = RSA_new();
-//             RSA_blinding_on(c->rsa_key, NULL);
-       }
+       xasprintf(&fname, "%s/hosts/%s", confbase, n->name);
 
-       /* First, check for simple PublicKey statement */
+       init_configuration(&config_tree);
+       if(!read_config_file(config_tree, fname))
+               goto exit;
 
-       if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &key)) {
-               BN_hex2bn(&c->rsa_key->n, key);
-               BN_hex2bn(&c->rsa_key->e, "FFFF");
-               free(key);
-               return true;
+       /* First, check for simple ECDSAPublicKey statement */
+
+       if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
+               result = ecdsa_set_base64_public_key(&n->ecdsa, p);
+               free(p);
+               goto exit;
        }
 
-       /* Else, check for PublicKeyFile statement and read it */
+       /* Else, check for ECDSAPublicKeyFile statement and read it */
 
-       if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
-               fp = fopen(fname, "r");
+       free(fname);
 
-               if(!fp) {
-                       logger(LOG_ERR, "Error reading RSA public key file `%s': %s",
-                                  fname, strerror(errno));
-                       free(fname);
-                       return false;
-               }
+       if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &fname))
+               xasprintf(&fname, "%s/hosts/%s", confbase, n->name);
 
-               free(fname);
-               c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
-               fclose(fp);
+       fp = fopen(fname, "r");
 
-               if(c->rsa_key)
-                       return true;            /* Woohoo. */
+       if(!fp) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", fname, strerror(errno));
+               goto exit;
+       }
 
-               /* If it fails, try PEM_read_RSA_PUBKEY. */
-               fp = fopen(fname, "r");
+       result = ecdsa_read_pem_public_key(&n->ecdsa, fp);
+       fclose(fp);
 
-               if(!fp) {
-                       logger(LOG_ERR, "Error reading RSA public key file `%s': %s",
-                                  fname, strerror(errno));
-                       free(fname);
-                       return false;
-               }
+exit:
+       exit_configuration(&config_tree);
+       free(fname);
+       return result;
+}
 
-               free(fname);
-               c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
-               fclose(fp);
+bool read_ecdsa_public_key(connection_t *c) {
+       FILE *fp;
+       char *fname;
+       char *p;
+       bool result;
 
-               if(c->rsa_key) {
-//                             RSA_blinding_on(c->rsa_key, NULL);
-                       return true;
-               }
+       /* First, check for simple ECDSAPublicKey statement */
 
-               logger(LOG_ERR, "Reading RSA public key file `%s' failed: %s",
-                          fname, strerror(errno));
-               return false;
+       if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
+               result = ecdsa_set_base64_public_key(&c->ecdsa, p);
+               free(p);
+               return result;
        }
 
-       /* Else, check if a harnessed public key is in the config file */
+       /* Else, check for ECDSAPublicKeyFile statement and read it */
+
+       if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
+               xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
 
-       xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
        fp = fopen(fname, "r");
 
        if(!fp) {
-               logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s",
+                          fname, strerror(errno));
                free(fname);
                return false;
        }
 
-       c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
+       result = ecdsa_read_pem_public_key(&c->ecdsa, fp);
        fclose(fp);
+
+       if(!result)
+               logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
        free(fname);
+       return result;
+}
 
-       if(c->rsa_key)
-               return true;
+bool read_rsa_public_key(connection_t *c) {
+       FILE *fp;
+       char *fname;
+       char *n;
+       bool result;
 
-       /* Try again with PEM_read_RSA_PUBKEY. */
+       /* First, check for simple PublicKey statement */
+
+       if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
+               result = rsa_set_hex_public_key(&c->rsa, n, "FFFF");
+               free(n);
+               return result;
+       }
+
+       /* Else, check for PublicKeyFile statement and read it */
+
+       if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
+               xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
 
-       xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
        fp = fopen(fname, "r");
 
        if(!fp) {
-               logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
                free(fname);
                return false;
        }
 
-       c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
-//     RSA_blinding_on(c->rsa_key, NULL);
+       result = rsa_read_pem_public_key(&c->rsa, fp);
        fclose(fp);
+
+       if(!result) 
+               logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
        free(fname);
+       return result;
+}
 
-       if(c->rsa_key)
-               return true;
+static bool read_ecdsa_private_key(void) {
+       FILE *fp;
+       char *fname;
+       bool result;
+
+       /* Check for PrivateKeyFile statement and read it */
 
-       logger(LOG_ERR, "No public key for %s specified!", c->name);
+       if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname))
+               xasprintf(&fname, "%s/ecdsa_key.priv", confbase);
+
+       fp = fopen(fname, "r");
+
+       if(!fp) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno));
+               free(fname);
+               return false;
+       }
+
+#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
+       struct stat s;
+
+       if(fstat(fileno(fp), &s)) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno));
+               free(fname);
+               return false;
+       }
+
+       if(s.st_mode & ~0100700)
+               logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
+#endif
+
+       result = ecdsa_read_pem_private_key(&myself->connection->ecdsa, fp);
+       fclose(fp);
 
-       return false;
+       if(!result) 
+               logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
+       free(fname);
+       return result;
 }
 
 static bool read_rsa_private_key(void) {
        FILE *fp;
-       char *fname, *key, *pubkey;
-       struct stat s;
+       char *fname;
+       char *n, *d;
+       bool result;
 
-       if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) {
-               if(!get_config_string(lookup_config(config_tree, "PublicKey"), &pubkey)) {
-                       logger(LOG_ERR, "PrivateKey used but no PublicKey found!");
+       /* First, check for simple PrivateKey statement */
+
+       if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
+               if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
+                       logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
+                       free(d);
                        return false;
                }
-               myself->connection->rsa_key = RSA_new();
-//             RSA_blinding_on(myself->connection->rsa_key, NULL);
-               BN_hex2bn(&myself->connection->rsa_key->d, key);
-               BN_hex2bn(&myself->connection->rsa_key->n, pubkey);
-               BN_hex2bn(&myself->connection->rsa_key->e, "FFFF");
-               free(key);
-               free(pubkey);
+               result = rsa_set_hex_private_key(&myself->connection->rsa, n, "FFFF", d);
+               free(n);
+               free(d);
                return true;
        }
 
+       /* Else, check for PrivateKeyFile statement and read it */
+
        if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
                xasprintf(&fname, "%s/rsa_key.priv", confbase);
 
        fp = fopen(fname, "r");
 
        if(!fp) {
-               logger(LOG_ERR, "Error reading RSA private key file `%s': %s",
+               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
                           fname, strerror(errno));
                free(fname);
                return false;
        }
 
 #if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
+       struct stat s;
+
        if(fstat(fileno(fp), &s)) {
-               logger(LOG_ERR, "Could not stat RSA private key file `%s': %s'",
-                               fname, strerror(errno));
+               logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno));
                free(fname);
                return false;
        }
 
        if(s.st_mode & ~0100700)
-               logger(LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
+               logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
 #endif
 
-       myself->connection->rsa_key = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);
+       result = rsa_read_pem_private_key(&myself->connection->rsa, fp);
        fclose(fp);
 
-       if(!myself->connection->rsa_key) {
-               logger(LOG_ERR, "Reading RSA private key file `%s' failed: %s",
-                          fname, strerror(errno));
-               free(fname);
-               return false;
+       if(!result) 
+               logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
+       free(fname);
+       return result;
+}
+
+static struct event keyexpire_event;
+
+static void keyexpire_handler(int fd, short events, void *data) {
+       regenerate_key();
+}
+
+void regenerate_key(void) {
+       if(timeout_initialized(&keyexpire_event)) {
+               logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
+               event_del(&keyexpire_event);
+               send_key_changed();
+       } else {
+               timeout_set(&keyexpire_event, keyexpire_handler, NULL);
        }
 
-       free(fname);
-       return true;
+       event_add(&keyexpire_event, &(struct timeval){keylifetime, 0});
 }
 
 /*
@@ -223,7 +294,7 @@ void load_all_subnets(void) {
        struct dirent *ent;
        char *dname;
        char *fname;
-       avl_tree_t *config_tree;
+       splay_tree_t *config_tree;
        config_t *cfg;
        subnet_t *s, *s2;
        node_t *n;
@@ -231,7 +302,7 @@ void load_all_subnets(void) {
        xasprintf(&dname, "%s/hosts", confbase);
        dir = opendir(dname);
        if(!dir) {
-               logger(LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+               logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
                free(dname);
                return;
        }
@@ -305,7 +376,7 @@ char *get_name(void) {
        }
 
        if(!check_id(name)) {
-               logger(LOG_ERR, "Invalid name for myself!");
+               logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
                free(name);
                return false;
        }
@@ -337,10 +408,11 @@ static bool setup_myself(void) {
        myself->connection->hostname = xstrdup("MYSELF");
 
        myself->connection->options = 0;
-       myself->connection->protocol_version = PROT_CURRENT;
+       myself->connection->protocol_major = PROT_MAJOR;
+       myself->connection->protocol_minor = PROT_MINOR;
 
        if(!(name = get_name())) {
-               logger(LOG_ERR, "Name for tinc daemon required!");
+               logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
                return false;
        }
 
@@ -351,6 +423,11 @@ static bool setup_myself(void) {
        read_config_file(config_tree, fname);
        free(fname);
 
+       get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
+
+       if(experimental && !read_ecdsa_private_key())
+               return false;
+
        if(!read_rsa_private_key())
                return false;
 
@@ -385,7 +462,7 @@ static bool setup_myself(void) {
                } else if(!strcasecmp(proxy, "exec")) {
                        proxytype = PROXY_EXEC;
                } else {
-                       logger(LOG_ERR, "Unknown proxy type %s!", proxy);
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
                        return false;
                }
 
@@ -396,7 +473,7 @@ static bool setup_myself(void) {
 
                        case PROXY_EXEC:
                                if(!space || !*space) {
-                                       logger(LOG_ERR, "Argument expected for proxy type exec!");
+                                       logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
                                        return false;
                                }
                                proxyhost =  xstrdup(space);
@@ -414,7 +491,7 @@ static bool setup_myself(void) {
                                if(space && (space = strchr(space, ' ')))
                                        *space++ = 0, proxypass = space;
                                if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
-                                       logger(LOG_ERR, "Host and port argument expected for proxy!");
+                                       logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
                                        return false;
                                }
                                proxyhost = xstrdup(proxyhost);
@@ -467,7 +544,7 @@ static bool setup_myself(void) {
                else if(!strcasecmp(mode, "hub"))
                        routing_mode = RMODE_HUB;
                else {
-                       logger(LOG_ERR, "Invalid routing mode!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
                        return false;
                }
                free(mode);
@@ -481,7 +558,7 @@ static bool setup_myself(void) {
                else if(!strcasecmp(mode, "kernel"))
                        forwarding_mode = FMODE_KERNEL;
                else {
-                       logger(LOG_ERR, "Invalid forwarding mode!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
                        return false;
                }
                free(mode);
@@ -507,7 +584,7 @@ static bool setup_myself(void) {
                else if(!strcasecmp(mode, "direct"))
                        broadcast_mode = BMODE_DIRECT;
                else {
-                       logger(LOG_ERR, "Invalid broadcast mode!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
                        return false;
                }
                free(mode);
@@ -515,7 +592,7 @@ static bool setup_myself(void) {
 
 #if !defined(SOL_IP) || !defined(IP_TOS)
        if(priorityinheritance)
-               logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
+               logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
 #endif
 
        if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
@@ -523,7 +600,7 @@ static bool setup_myself(void) {
 
        if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
                if(maxtimeout <= 0) {
-                       logger(LOG_ERR, "Bogus maximum timeout!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!");
                        return false;
                }
        } else
@@ -531,21 +608,21 @@ static bool setup_myself(void) {
 
        if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
                if(udp_rcvbuf <= 0) {
-                       logger(LOG_ERR, "UDPRcvBuf cannot be negative!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
                        return false;
                }
        }
 
        if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
                if(udp_sndbuf <= 0) {
-                       logger(LOG_ERR, "UDPSndBuf cannot be negative!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
                        return false;
                }
        }
 
        if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
                if(replaywin_int < 0) {
-                       logger(LOG_ERR, "ReplayWindow cannot be negative!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
                        return false;
                }
                replaywin = (unsigned)replaywin_int;
@@ -559,7 +636,7 @@ static bool setup_myself(void) {
                else if(!strcasecmp(afname, "any"))
                        addressfamily = AF_UNSPEC;
                else {
-                       logger(LOG_ERR, "Invalid address family!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
                        return false;
                }
                free(afname);
@@ -569,71 +646,42 @@ static bool setup_myself(void) {
 
        /* Generate packet encryption key */
 
-       if(get_config_string
-          (lookup_config(config_tree, "Cipher"), &cipher)) {
-               if(!strcasecmp(cipher, "none")) {
-                       myself->incipher = NULL;
-               } else {
-                       myself->incipher = EVP_get_cipherbyname(cipher);
-
-                       if(!myself->incipher) {
-                               logger(LOG_ERR, "Unrecognized cipher type!");
-                               return false;
-                       }
-               }
-       } else
-               myself->incipher = EVP_bf_cbc();
-
-       if(myself->incipher)
-               myself->inkeylength = myself->incipher->key_len + myself->incipher->iv_len;
-       else
-               myself->inkeylength = 1;
+       if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
+               cipher = xstrdup("blowfish");
 
-       myself->connection->outcipher = EVP_bf_ofb();
+       if(!cipher_open_by_name(&myself->incipher, cipher)) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
+               return false;
+       }
 
        if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
                keylifetime = 3600;
 
-       keyexpires = now + keylifetime;
-       
-       /* Check if we want to use message authentication codes... */
+       regenerate_key();
 
-       if(get_config_string(lookup_config(config_tree, "Digest"), &digest)) {
-               if(!strcasecmp(digest, "none")) {
-                       myself->indigest = NULL;
-               } else {
-                       myself->indigest = EVP_get_digestbyname(digest);
+       /* Check if we want to use message authentication codes... */
 
-                       if(!myself->indigest) {
-                               logger(LOG_ERR, "Unrecognized digest type!");
-                               return false;
-                       }
-               }
-       } else
-               myself->indigest = EVP_sha1();
+       int maclength = 4;
+       get_config_int(lookup_config(config_tree, "MACLength"), &maclength);
 
-       myself->connection->outdigest = EVP_sha1();
+       if(maclength < 0) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!");
+               return false;
+       }
 
-       if(get_config_int(lookup_config(config_tree, "MACLength"), &myself->inmaclength)) {
-               if(myself->indigest) {
-                       if(myself->inmaclength > myself->indigest->md_size) {
-                               logger(LOG_ERR, "MAC length exceeds size of digest!");
-                               return false;
-                       } else if(myself->inmaclength < 0) {
-                               logger(LOG_ERR, "Bogus MAC length!");
-                               return false;
-                       }
-               }
-       } else
-               myself->inmaclength = 4;
+       if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
+               digest = xstrdup("sha1");
 
-       myself->connection->outmaclength = 0;
+       if(!digest_open_by_name(&myself->indigest, digest, maclength)) {
+               logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
+               return false;
+       }
 
        /* Compression */
 
        if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
                if(myself->incompression < 0 || myself->incompression > 11) {
-                       logger(LOG_ERR, "Bogus compression level!");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
                        return false;
                }
        } else
@@ -677,6 +725,16 @@ static bool setup_myself(void) {
        if(!devops.setup())
                return false;
 
+       if(device_fd >= 0) {
+               event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
+
+               if (event_add(&device_ev, NULL) < 0) {
+                       logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
+                       devops.close();
+                       return false;
+               }
+       }
+
        /* Run tinc-up script to further initialize the tap interface */
        xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
        xasprintf(&envp[1], "DEVICE=%s", device ? : "");
@@ -686,7 +744,7 @@ static bool setup_myself(void) {
 
        execute_script("tinc-up", envp);
 
-       for(i = 0; i < 5; i++)
+       for(i = 0; i < 4; i++)
                free(envp[i]);
 
        /* Run subnet-up scripts for our own subnets */
@@ -705,14 +763,14 @@ static bool setup_myself(void) {
 #endif
 
                if(listen_sockets > MAXSOCKETS) {
-                       logger(LOG_ERR, "Too many listening sockets");
+                       logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
                        return false;
                }
 
                for(i = 0; i < listen_sockets; i++) {
                        salen = sizeof sa;
                        if(getsockname(i + 3, &sa.sa, &salen) < 0) {
-                               logger(LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno));
+                               logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno));
                                return false;
                        }
 
@@ -726,9 +784,21 @@ static bool setup_myself(void) {
                        if(listen_socket[i].udp < 0)
                                return false;
 
-                       ifdebug(CONNECTIONS) {
+                       event_set(&listen_socket[i].ev_tcp, listen_socket[i].tcp, EV_READ|EV_PERSIST, handle_new_meta_connection, NULL);
+                       if(event_add(&listen_socket[i].ev_tcp, NULL) < 0) {
+                               logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
+                               abort();
+                       }
+
+                       event_set(&listen_socket[i].ev_udp, listen_socket[i].udp, EV_READ|EV_PERSIST, handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets);
+                       if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
+                               logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
+                               abort();
+                       }
+
+                       if(debug_level >= DEBUG_CONNECTIONS) {
                                hostname = sockaddr2hostname(&sa);
-                               logger(LOG_NOTICE, "Listening on %s", hostname);
+                               logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
                                free(hostname);
                        }
 
@@ -765,14 +835,14 @@ static bool setup_myself(void) {
                        free(address);
 
                        if(err || !ai) {
-                               logger(LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
+                               logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
                                           gai_strerror(err));
                                return false;
                        }
 
                        for(aip = ai; aip; aip = aip->ai_next) {
                                if(listen_sockets >= MAXSOCKETS) {
-                                       logger(LOG_ERR, "Too many listening sockets");
+                                       logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
                                        return false;
                                }
 
@@ -785,12 +855,32 @@ static bool setup_myself(void) {
                                listen_socket[listen_sockets].udp =
                                        setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
 
-                               if(listen_socket[listen_sockets].udp < 0)
+                               if(listen_socket[listen_sockets].udp < 0) {
+                                       close(listen_socket[listen_sockets].tcp);
                                        continue;
+                               }
 
-                               ifdebug(CONNECTIONS) {
+                               event_set(&listen_socket[listen_sockets].ev_tcp,
+                                                 listen_socket[listen_sockets].tcp,
+                                                 EV_READ|EV_PERSIST,
+                                                 handle_new_meta_connection, NULL);
+                               if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) {
+                                       logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
+                                       abort();
+                               }
+
+                               event_set(&listen_socket[listen_sockets].ev_udp,
+                                                 listen_socket[listen_sockets].udp,
+                                                 EV_READ|EV_PERSIST,
+                                                 handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets);
+                               if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
+                                       logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
+                                       abort();
+                               }
+
+                               if(debug_level >= DEBUG_CONNECTIONS) {
                                        hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
-                                       logger(LOG_NOTICE, "Listening on %s", hostname);
+                                       logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
                                        free(hostname);
                                }
 
@@ -803,9 +893,9 @@ static bool setup_myself(void) {
        }
 
        if(listen_sockets)
-               logger(LOG_NOTICE, "Ready");
+               logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
        else {
-               logger(LOG_ERR, "Unable to create any listening socket!");
+               logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
                return false;
        }
 
@@ -816,9 +906,6 @@ static bool setup_myself(void) {
   initialize network
 */
 bool setup_network(void) {
-       now = time(NULL);
-
-       init_events();
        init_connections();
        init_subnets();
        init_nodes();
@@ -850,7 +937,7 @@ bool setup_network(void) {
   close all open network connections
 */
 void close_network_connections(void) {
-       avl_node_t *node, *next;
+       splay_node_t *node, *next;
        connection_t *c;
        char *envp[5];
        int i;
@@ -862,13 +949,6 @@ void close_network_connections(void) {
                terminate_connection(c, false);
        }
 
-       for(list_node_t *node = outgoing_list->head; node; node = node->next) {
-               outgoing_t *outgoing = node->data;
-
-               if(outgoing->event)
-                       event_del(outgoing->event);
-       }
-
        list_delete_list(outgoing_list);
 
        if(myself && myself->connection) {
@@ -878,6 +958,8 @@ void close_network_connections(void) {
        }
 
        for(i = 0; i < listen_sockets; i++) {
+               event_del(&listen_socket[i].ev_tcp);
+               event_del(&listen_socket[i].ev_udp);
                close(listen_socket[i].tcp);
                close(listen_socket[i].udp);
        }
@@ -893,7 +975,6 @@ void close_network_connections(void) {
        exit_subnets();
        exit_nodes();
        exit_connections();
-       exit_events();
 
        execute_script("tinc-down", envp);