/*
net_setup.c -- Setup.
- Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2006 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
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.
-
- $Id$
+ 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 "system.h"
-#include <openssl/pem.h>
-#include <openssl/rsa.h>
-#include <openssl/rand.h>
-#include <openssl/err.h>
-#include <openssl/evp.h>
-
-#include "splay_tree.h"
#include "conf.h"
#include "connection.h"
-#include "control.h"
-#include "device.h"
+#include "ecdsa.h"
#include "graph.h"
#include "logger.h"
+#include "meshlink_internal.h"
#include "net.h"
#include "netutl.h"
-#include "process.h"
#include "protocol.h"
#include "route.h"
-#include "subnet.h"
#include "utils.h"
#include "xalloc.h"
-char *myport;
-static struct event device_ev;
-
-bool read_rsa_public_key(connection_t *c) {
- FILE *fp;
- char *fname;
- char *key;
-
- cp();
+int autoconnect = 3;
- if(!c->rsa_key) {
- c->rsa_key = RSA_new();
-// RSA_blinding_on(c->rsa_key, NULL);
- }
-
- /* First, check for simple PublicKey statement */
-
- 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);
+bool node_read_ecdsa_public_key(meshlink_handle_t *mesh, node_t *n) {
+ if(ecdsa_active(n->ecdsa))
return true;
- }
-
- /* Else, check for PublicKeyFile statement and read it */
-
- if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return false;
- }
-
- free(fname);
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
-
- if(c->rsa_key)
- return true; /* Woohoo. */
-
- /* If it fails, try PEM_read_RSA_PUBKEY. */
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return false;
- }
- free(fname);
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
-
- if(c->rsa_key) {
-// RSA_blinding_on(c->rsa_key, NULL);
- return true;
- }
-
- logger(LOG_ERR, _("Reading RSA public key file `%s' failed: %s"),
- fname, strerror(errno));
- return false;
- }
+ splay_tree_t *config_tree;
+ char *p;
- /* Else, check if a harnessed public key is in the config file */
+ init_configuration(&config_tree);
+ if(!read_host_config(mesh, config_tree, n->name))
+ goto exit;
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- fp = fopen(fname, "r");
+ /* First, check for simple ECDSAPublicKey statement */
- if(fp) {
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
+ n->ecdsa = ecdsa_set_base64_public_key(p);
+ free(p);
}
- free(fname);
+exit:
+ exit_configuration(&config_tree);
+ return n->ecdsa;
+}
- if(c->rsa_key)
+bool read_ecdsa_public_key(meshlink_handle_t *mesh, connection_t *c) {
+ if(ecdsa_active(c->ecdsa))
return true;
- /* Try again with PEM_read_RSA_PUBKEY. */
+ char *p;
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- fp = fopen(fname, "r");
-
- if(fp) {
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
-// RSA_blinding_on(c->rsa_key, NULL);
- fclose(fp);
+ if(!c->config_tree) {
+ init_configuration(&c->config_tree);
+ if(!read_host_config(mesh, c->config_tree, c->name))
+ return false;
}
- free(fname);
+ /* First, check for simple ECDSAPublicKey statement */
- if(c->rsa_key)
- return true;
-
- logger(LOG_ERR, _("No public key for %s specified!"), c->name);
+ if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
+ c->ecdsa = ecdsa_set_base64_public_key(p);
+ free(p);
+ return c->ecdsa;
+ }
return false;
}
-bool read_rsa_private_key(void) {
+bool read_ecdsa_private_key(meshlink_handle_t *mesh) {
FILE *fp;
- char *fname, *key, *pubkey;
- struct stat s;
-
- cp();
-
- if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) {
- if(!get_config_string(lookup_config(myself->connection->config_tree, "PublicKey"), &pubkey)) {
- logger(LOG_ERR, _("PrivateKey used but no PublicKey found!"));
- 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);
- return true;
- }
-
- if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
- asprintf(&fname, "%s/rsa_key.priv", confbase);
+ char filename[PATH_MAX];
- fp = fopen(fname, "r");
+ snprintf(filename,PATH_MAX, "%s" SLASH "ecdsa_key.priv", mesh->confbase);
+ fp = fopen(filename, "r");
if(!fp) {
- logger(LOG_ERR, _("Error reading RSA private key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return false;
- }
-
-#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
- if(fstat(fileno(fp), &s)) {
- logger(LOG_ERR, _("Could not stat RSA private key file `%s': %s'"),
- fname, strerror(errno));
- free(fname);
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file: %s", strerror(errno));
return false;
}
- if(s.st_mode & ~0100700)
- logger(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);
+ mesh->self->connection->ecdsa = ecdsa_read_pem_private_key(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(!mesh->self->connection->ecdsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file failed: %s", strerror(errno));
- free(fname);
- return true;
+ return mesh->self->connection->ecdsa;
}
-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);
+static bool read_invitation_key(meshlink_handle_t *mesh) {
+ FILE *fp;
+ char filename[PATH_MAX];
- 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);
+ if(mesh->invitation_key) {
+ ecdsa_free(mesh->invitation_key);
+ mesh->invitation_key = NULL;
}
- event_add(&keyexpire_event, &(struct timeval){keylifetime, 0});
+ snprintf(filename,PATH_MAX, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", mesh->confbase);
- 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();
- }
+ fp = fopen(filename, "r");
+ if(fp) {
+ mesh->invitation_key = ecdsa_read_pem_private_key(fp);
+ fclose(fp);
+ if(!mesh->invitation_key)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", filename, strerror(errno));
}
-}
-
-/*
- Configure node_t myself and set up the local sockets (listen only)
-*/
-bool setup_myself(void) {
- config_t *cfg;
- subnet_t *subnet;
- char *name, *hostname, *mode, *afname, *cipher, *digest;
- char *address = NULL;
- char *envp[5];
- struct addrinfo *ai, *aip, hint = {0};
- bool choice;
- int i, err;
- cp();
-
- myself = new_node();
- myself->connection = new_connection();
- init_configuration(&myself->connection->config_tree);
-
- asprintf(&myself->hostname, _("MYSELF"));
- asprintf(&myself->connection->hostname, _("MYSELF"));
+ return mesh->invitation_key;
+}
- myself->connection->options = 0;
- myself->connection->protocol_version = PROT_CURRENT;
+void load_all_nodes(meshlink_handle_t *mesh) {
+ DIR *dir;
+ struct dirent *ent;
+ char dname[PATH_MAX];
- if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */
- logger(LOG_ERR, _("Name for tinc daemon required!"));
- return false;
+ snprintf(dname,PATH_MAX, "%s" SLASH "hosts", mesh->confbase);
+ dir = opendir(dname);
+ if(!dir) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ return;
}
- if(!check_id(name)) {
- logger(LOG_ERR, _("Invalid name for myself!"));
- free(name);
- return false;
- }
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
- myself->name = name;
- myself->connection->name = xstrdup(name);
+ node_t *n = lookup_node(mesh, ent->d_name);
+ if(n)
+ continue;
- if(!read_connection_config(myself->connection)) {
- logger(LOG_ERR, _("Cannot open host configuration file for myself!"));
- return false;
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(mesh, n);
}
- if(!read_rsa_private_key())
- return false;
+ closedir(dir);
+}
- if(!get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport))
- asprintf(&myport, "655");
- /* Read in all the subnets specified in the host configuration file */
+char *get_name(meshlink_handle_t *mesh) {
+ char *name = NULL;
- cfg = lookup_config(myself->connection->config_tree, "Subnet");
+ get_config_string(lookup_config(mesh->config, "Name"), &name);
- while(cfg) {
- if(!get_config_subnet(cfg, &subnet))
- return false;
+ if(!name)
+ return NULL;
- subnet_add(myself, subnet);
-
- cfg = lookup_config_next(myself->connection->config_tree, cfg);
+ if(!check_id(name)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for mesh->self!");
+ free(name);
+ return NULL;
}
- /* Check some options */
+ return name;
+}
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
- myself->options |= OPTION_INDIRECT;
+bool setup_myself_reloadable(meshlink_handle_t *mesh) {
+ mesh->localdiscovery = true;
+ keylifetime = 3600; // TODO: check if this can be removed as well
+ mesh->maxtimeout = 900;
+ autoconnect = 3;
+ mesh->self->options |= OPTION_PMTU_DISCOVERY;
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
- myself->options |= OPTION_TCPONLY;
+ read_invitation_key(mesh);
- if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice) && choice)
- myself->options |= OPTION_INDIRECT;
+ return true;
+}
- if(get_config_bool(lookup_config(myself->connection->config_tree, "TCPOnly"), &choice) && choice)
- myself->options |= OPTION_TCPONLY;
+/*
+ Add listening sockets.
+*/
+static bool add_listen_address(meshlink_handle_t *mesh, char *address, bool bindto) {
+ char *port = mesh->myport;
+
+ if(address) {
+ char *space = strchr(address, ' ');
+ if(space) {
+ *space++ = 0;
+ port = space;
+ }
- if(get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice) && choice)
- myself->options |= OPTION_PMTU_DISCOVERY;
+ if(!strcmp(address, "*"))
+ *address = 0;
+ }
- if(myself->options & OPTION_TCPONLY)
- myself->options |= OPTION_INDIRECT;
+ struct addrinfo *ai, hint = {0};
+ hint.ai_family = addressfamily;
+ hint.ai_socktype = SOCK_STREAM;
+ hint.ai_protocol = IPPROTO_TCP;
+ hint.ai_flags = AI_PASSIVE;
- get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
+ int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+ free(address);
- if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) {
- if(!strcasecmp(mode, "router"))
- routing_mode = RMODE_ROUTER;
- else if(!strcasecmp(mode, "switch"))
- routing_mode = RMODE_SWITCH;
- else if(!strcasecmp(mode, "hub"))
- routing_mode = RMODE_HUB;
- else {
- logger(LOG_ERR, _("Invalid routing mode!"));
- return false;
- }
- free(mode);
- } else
- routing_mode = RMODE_ROUTER;
+ if(err || !ai) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
+ return false;
+ }
- get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ // Ignore duplicate addresses
+ bool found = false;
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- logger(LOG_WARNING, _("PriorityInheritance not supported on this platform"));
-#endif
+ for(int i = 0; i < mesh->listen_sockets; i++)
+ if(!memcmp(&mesh->listen_socket[i].sa, aip->ai_addr, aip->ai_addrlen)) {
+ found = true;
+ break;
+ }
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
- macexpire = 600;
+ if(found)
+ continue;
- if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
- if(maxtimeout <= 0) {
- logger(LOG_ERR, _("Bogus maximum timeout!"));
- return false;
- }
- } else
- maxtimeout = 900;
-
- if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
- if(!strcasecmp(afname, "IPv4"))
- addressfamily = AF_INET;
- else if(!strcasecmp(afname, "IPv6"))
- addressfamily = AF_INET6;
- else if(!strcasecmp(afname, "any"))
- addressfamily = AF_UNSPEC;
- else {
- logger(LOG_ERR, _("Invalid address family!"));
+ if(mesh->listen_sockets >= MAXSOCKETS) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
return false;
}
- free(afname);
- }
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
+ int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
- /* Generate packet encryption key */
+ if(tcp_fd < 0)
+ continue;
- if(get_config_string
- (lookup_config(myself->connection->config_tree, "Cipher"), &cipher)) {
- if(!strcasecmp(cipher, "none")) {
- myself->cipher = NULL;
- } else {
- myself->cipher = EVP_get_cipherbyname(cipher);
+ int udp_fd = setup_vpn_in_socket(mesh, (sockaddr_t *) aip->ai_addr);
- if(!myself->cipher) {
- logger(LOG_ERR, _("Unrecognized cipher type!"));
- return false;
- }
+ if(tcp_fd < 0) {
+ close(tcp_fd);
+ continue;
}
- } else
- myself->cipher = EVP_bf_cbc();
- if(myself->cipher)
- myself->keylength = myself->cipher->key_len + myself->cipher->iv_len;
- else
- myself->keylength = 1;
+ io_add(&mesh->loop, &mesh->listen_socket[mesh->listen_sockets].tcp, handle_new_meta_connection, &mesh->listen_socket[mesh->listen_sockets], tcp_fd, IO_READ);
+ io_add(&mesh->loop, &mesh->listen_socket[mesh->listen_sockets].udp, handle_incoming_vpn_data, &mesh->listen_socket[mesh->listen_sockets], udp_fd, IO_READ);
- myself->connection->outcipher = EVP_bf_ofb();
-
- myself->key = xmalloc(myself->keylength);
+ if(mesh->debug_level >= DEBUG_CONNECTIONS) {
+ char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
+ logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ free(hostname);
+ }
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
- keylifetime = 3600;
+ mesh->listen_socket[mesh->listen_sockets].bindto = bindto;
+ memcpy(&mesh->listen_socket[mesh->listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
+ mesh->listen_sockets++;
+ }
- regenerate_key();
- /* Check if we want to use message authentication codes... */
+ freeaddrinfo(ai);
+ return true;
+}
- if(get_config_string
- (lookup_config(myself->connection->config_tree, "Digest"), &digest)) {
- if(!strcasecmp(digest, "none")) {
- myself->digest = NULL;
- } else {
- myself->digest = EVP_get_digestbyname(digest);
+/*
+ Configure node_t mesh->self and set up the local sockets (listen only)
+*/
+bool setup_myself(meshlink_handle_t *mesh) {
+ char *name;
+ char *address = NULL;
- if(!myself->digest) {
- logger(LOG_ERR, _("Unrecognized digest type!"));
- return false;
- }
- }
- } else
- myself->digest = EVP_sha1();
-
- myself->connection->outdigest = EVP_sha1();
-
- if(get_config_int(lookup_config(myself->connection->config_tree, "MACLength"),
- &myself->maclength)) {
- if(myself->digest) {
- if(myself->maclength > myself->digest->md_size) {
- logger(LOG_ERR, _("MAC length exceeds size of digest!"));
- return false;
- } else if(myself->maclength < 0) {
- logger(LOG_ERR, _("Bogus MAC length!"));
- return false;
- }
- }
- } else
- myself->maclength = 4;
+ if(!(name = get_name(mesh))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Name for MeshLink instance required!");
+ return false;
+ }
- myself->connection->outmaclength = 0;
+ mesh->self = new_node();
+ mesh->self->connection = new_connection();
+ mesh->self->name = name;
+ mesh->self->connection->name = xstrdup(name);
+ read_host_config(mesh, mesh->config, name);
- /* Compression */
+ if(!get_config_string(lookup_config(mesh->config, "Port"), &mesh->myport))
+ mesh->myport = xstrdup("655");
- if(get_config_int(lookup_config(myself->connection->config_tree, "Compression"),
- &myself->compression)) {
- if(myself->compression < 0 || myself->compression > 11) {
- logger(LOG_ERR, _("Bogus compression level!"));
- return false;
- }
- } else
- myself->compression = 0;
+ mesh->self->connection->options = 0;
+ mesh->self->connection->protocol_major = PROT_MAJOR;
+ mesh->self->connection->protocol_minor = PROT_MINOR;
- myself->connection->outcompression = 0;
+ mesh->self->options |= PROT_MINOR << 24;
- /* Done */
+ if(!read_ecdsa_private_key(mesh))
+ return false;
- myself->nexthop = myself;
- myself->via = myself;
- myself->status.reachable = true;
- node_add(myself);
+ /* Ensure mesh->myport is numeric */
- graph();
+ if(!atoi(mesh->myport)) {
+ struct addrinfo *ai = str2addrinfo("localhost", mesh->myport, SOCK_DGRAM);
+ sockaddr_t sa;
+ if(!ai || !ai->ai_addr)
+ return false;
+ free(mesh->myport);
+ memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
+ sockaddr2str(&sa, NULL, &mesh->myport);
+ }
- /* Open device */
+ /* Check some options */
- if(!setup_device())
+ if(!setup_myself_reloadable(mesh))
return false;
- event_set(&device_ev, device_fd, EV_READ|EV_PERSIST,
- handle_device_data, NULL);
- if (event_add(&device_ev, NULL) < 0) {
- logger(LOG_ERR, _("event_add failed: %s"), strerror(errno));
- close_device();
- return false;
- }
+ /* Compression */
- /* Run tinc-up script to further initialize the tap interface */
- asprintf(&envp[0], "NETNAME=%s", netname ? : "");
- asprintf(&envp[1], "DEVICE=%s", device ? : "");
- asprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- asprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
+ // TODO: drop compression in the packet layer?
+ mesh->self->incompression = 0;
+ mesh->self->connection->outcompression = 0;
- execute_script("tinc-up", envp);
+ /* Done */
- for(i = 0; i < 5; i++)
- free(envp[i]);
+ mesh->self->nexthop = mesh->self;
+ mesh->self->via = mesh->self;
+ mesh->self->status.reachable = true;
+ mesh->self->last_state_change = mesh->loop.now.tv_sec;
+ node_add(mesh, mesh->self);
- /* Run subnet-up scripts for our own subnets */
+ graph(mesh);
- subnet_update(myself, NULL, true);
+ if(autoconnect)
+ load_all_nodes(mesh);
/* Open sockets */
- get_config_string(lookup_config(config_tree, "BindToAddress"), &address);
+ mesh->listen_sockets = 0;
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
-
- err = getaddrinfo(address, myport, &hint, &ai);
+ if(!add_listen_address(mesh, address, NULL))
+ return false;
- if(err || !ai) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo",
- gai_strerror(err));
+ if(!mesh->listen_sockets) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
return false;
}
- listen_sockets = 0;
-
- for(aip = ai; aip; aip = aip->ai_next) {
- listen_socket[listen_sockets].tcp =
- setup_listen_socket((sockaddr_t *) aip->ai_addr);
-
- if(listen_socket[listen_sockets].tcp < 0)
- continue;
+ // TODO: require Port to be set? Or use "0" and use getsockname()?
- listen_socket[listen_sockets].udp =
- setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+ if(!mesh->myport)
+ mesh->myport = xstrdup("655");
- if(listen_socket[listen_sockets].udp < 0) {
- close(listen_socket[listen_sockets].tcp);
- continue;
- }
+ xasprintf(&mesh->self->hostname, "MYSELF port %s", mesh->myport);
+ mesh->self->connection->hostname = xstrdup(mesh->self->hostname);
- 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(LOG_EMERG, _("event_add failed: %s"), strerror(errno));
- abort();
- }
+ /* Done. */
- event_set(&listen_socket[listen_sockets].ev_udp,
- listen_socket[listen_sockets].udp,
- EV_READ|EV_PERSIST,
- handle_incoming_vpn_data, NULL);
- if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
- logger(LOG_EMERG, _("event_add failed: %s"), strerror(errno));
- abort();
- }
-
- ifdebug(CONNECTIONS) {
- hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(LOG_NOTICE, _("Listening on %s"), hostname);
- free(hostname);
- }
-
- memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
- listen_sockets++;
-
- if(listen_sockets >= MAXSOCKETS) {
- logger(LOG_WARNING, _("Maximum of %d listening sockets reached"), MAXSOCKETS);
- break;
- }
- }
-
- freeaddrinfo(ai);
-
- if(listen_sockets)
- logger(LOG_NOTICE, _("Ready"));
- else {
- logger(LOG_ERR, _("Unable to create any listening socket!"));
- return false;
- }
+ mesh->last_config_check = mesh->loop.now.tv_sec;
return true;
}
/*
- setup all initial network connections
+ initialize network
*/
-bool setup_network_connections(void) {
- cp();
-
- init_connections();
- init_subnets();
- init_nodes();
- init_edges();
- init_requests();
- init_control();
-
- if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
- if(pinginterval < 1) {
- pinginterval = 86400;
- }
- } else
- pinginterval = 60;
+bool setup_network(meshlink_handle_t *mesh) {
+ init_connections(mesh);
+ init_nodes(mesh);
+ init_edges(mesh);
+ init_requests(mesh);
- if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
- pingtimeout = 5;
- if(pingtimeout < 1 || pingtimeout > pinginterval)
- pingtimeout = pinginterval;
+ mesh->pinginterval = 60;
+ mesh->pingtimeout = 5;
+ maxoutbufsize = 10 * MTU;
- if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize))
- maxoutbufsize = 4 * MTU;
-
- if(!setup_myself())
+ if(!setup_myself(mesh))
return false;
- try_outgoing_connections();
-
return true;
}
/*
close all open network connections
*/
-void close_network_connections(void) {
- splay_node_t *node, *next;
- connection_t *c;
- char *envp[5];
- int i;
-
- cp();
-
- for(node = connection_tree->head; node; node = next) {
- next = node->next;
- c = node->data;
-
- if(c->outgoing) {
- if(c->outgoing->ai)
- freeaddrinfo(c->outgoing->ai);
- free(c->outgoing->name);
- free(c->outgoing);
+void close_network_connections(meshlink_handle_t *mesh) {
+ if(mesh->connections) {
+ for(list_node_t *node = mesh->connections->head, *next; node; node = next) {
+ next = node->next;
+ connection_t *c = node->data;
c->outgoing = NULL;
+ terminate_connection(mesh, c, false);
}
-
- terminate_connection(c, false);
}
- if(myself && myself->connection) {
- subnet_update(myself, NULL, false);
- terminate_connection(myself->connection, false);
- }
+ if(mesh->outgoings)
+ list_delete_list(mesh->outgoings);
- 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);
+ if(mesh->self && mesh->self->connection) {
+ terminate_connection(mesh, mesh->self->connection, false);
+ free_connection(mesh->self->connection);
}
- asprintf(&envp[0], "NETNAME=%s", netname ? : "");
- asprintf(&envp[1], "DEVICE=%s", device ? : "");
- asprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- asprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
-
- exit_control();
- exit_requests();
- exit_edges();
- exit_subnets();
- exit_nodes();
- exit_connections();
-
- execute_script("tinc-down", envp);
+ for(int i = 0; i < mesh->listen_sockets; i++) {
+ io_del(&mesh->loop, &mesh->listen_socket[i].tcp);
+ io_del(&mesh->loop, &mesh->listen_socket[i].udp);
+ close(mesh->listen_socket[i].tcp.fd);
+ close(mesh->listen_socket[i].udp.fd);
+ }
- for(i = 0; i < 4; i++)
- free(envp[i]);
+ exit_requests(mesh);
+ exit_edges(mesh);
+ exit_nodes(mesh);
+ exit_connections(mesh);
- close_device();
+ if(mesh->myport) free(mesh->myport);
return;
}
projects / meshlink / blobdiff