/*
net_setup.c -- Setup.
- Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2010 Guus Sliepen <guus@tinc-vpn.org>
- 2006 Scott Lamb <slamb@slamb.org>
+ Copyright (C) 2014-2017 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
#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 "conf.h"
#include "connection.h"
-#include "device.h"
-#include "event.h"
+#include "ecdsa.h"
#include "graph.h"
#include "logger.h"
+#include "meshlink_internal.h"
#include "net.h"
#include "netutl.h"
-#include "process.h"
+#include "packmsg.h"
#include "protocol.h"
#include "route.h"
-#include "subnet.h"
#include "utils.h"
#include "xalloc.h"
+#include "submesh.h"
+
+/// Helper function to start parsing a host config file
+static bool node_get_config(meshlink_handle_t *mesh, node_t *n, config_t *config, packmsg_input_t *in) {
+ if(!config_read(mesh, "current", n->name, config, mesh->config_key)) {
+ return false;
+ }
-char *myport;
+ in->ptr = config->buf;
+ in->len = config->len;
-bool read_rsa_public_key(connection_t *c) {
- FILE *fp;
- char *fname;
- char *key;
+ uint32_t version = packmsg_get_uint32(in);
- if(!c->rsa_key) {
- c->rsa_key = RSA_new();
-// RSA_blinding_on(c->rsa_key, NULL);
+ if(version != MESHLINK_CONFIG_VERSION) {
+ logger(mesh, MESHLINK_ERROR, "Invalid config file for node %s", n->name);
+ config_free(config);
+ return false;
}
- /* First, check for simple PublicKey statement */
+ const char *name;
+ uint32_t len = packmsg_get_str_raw(in, &name);
+
+ if(len != strlen(n->name) || !name || strncmp(name, n->name, len)) {
+ logger(mesh, MESHLINK_ERROR, "Invalid config file for node %s", n->name);
+ config_free(config);
+ return false;
+ }
+
+ return true;
+}
- 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);
+/// Read the public key from a host config file. Used whenever we need to start an SPTPS session.
+bool node_read_public_key(meshlink_handle_t *mesh, node_t *n) {
+ if(ecdsa_active(n->ecdsa)) {
return true;
}
- /* Else, check for PublicKeyFile statement and read it */
+ config_t config;
+ packmsg_input_t in;
- if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
- fp = fopen(fname, "r");
+ if(!node_get_config(mesh, n, &config, &in)) {
+ return false;
+ }
- if(!fp) {
- logger(LOG_ERR, "Error reading RSA public key file `%s': %s",
- fname, strerror(errno));
- free(fname);
- return false;
- }
+ packmsg_skip_element(&in); /* submesh */
+ packmsg_get_int32(&in); /* devclass */
+ packmsg_get_bool(&in); /* blacklisted */
- free(fname);
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ const void *key;
+ uint32_t len = packmsg_get_bin_raw(&in, &key);
- if(c->rsa_key)
- return true; /* Woohoo. */
+ if(len != 32) {
+ config_free(&config);
+ return false;
+ }
- /* If it fails, try PEM_read_RSA_PUBKEY. */
- fp = fopen(fname, "r");
+ n->ecdsa = ecdsa_set_public_key(key);
- if(!fp) {
- logger(LOG_ERR, "Error reading RSA public key file `%s': %s",
- fname, strerror(errno));
- free(fname);
- return false;
- }
+ // While we are at it, read known address information
+ if(!n->canonical_address) {
+ n->canonical_address = packmsg_get_str_dup(&in);
+ } else {
+ packmsg_skip_element(&in);
+ }
- free(fname);
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ // Append any known addresses in the config file to the list we currently have
+ uint32_t known_count = 0;
- if(c->rsa_key) {
-// RSA_blinding_on(c->rsa_key, NULL);
- return true;
+ for(uint32_t i = 0; i < MAX_RECENT; i++) {
+ if(n->recent[i].sa.sa_family) {
+ known_count++;
}
+ }
- logger(LOG_ERR, "Reading RSA public key file `%s' failed: %s",
- fname, strerror(errno));
- return false;
+ uint32_t count = packmsg_get_array(&in);
+
+ for(uint32_t i = 0; i < count; i++) {
+ if(i < MAX_RECENT - known_count) {
+ n->recent[i + known_count] = packmsg_get_sockaddr(&in);
+ } else {
+ packmsg_skip_element(&in);
+ }
}
- /* Else, check if a harnessed public key is in the config file */
+ time_t last_reachable = packmsg_get_int64(&in);
+ time_t last_unreachable = packmsg_get_int64(&in);
- xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
- fp = fopen(fname, "r");
+ if(!n->last_reachable) {
+ n->last_reachable = last_reachable;
+ }
- if(fp) {
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ if(!n->last_unreachable) {
+ n->last_unreachable = last_unreachable;
}
- free(fname);
+ config_free(&config);
+ return true;
+}
- if(c->rsa_key)
+/// Fill in node details from a config blob.
+bool node_read_from_config(meshlink_handle_t *mesh, node_t *n, const config_t *config) {
+ if(n->canonical_address) {
return true;
+ }
- /* Try again with PEM_read_RSA_PUBKEY. */
-
- xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
- fp = fopen(fname, "r");
+ packmsg_input_t in = {config->buf, config->len};
+ uint32_t version = packmsg_get_uint32(&in);
- 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(version != MESHLINK_CONFIG_VERSION) {
+ return false;
}
- free(fname);
+ char *name = packmsg_get_str_dup(&in);
- if(c->rsa_key)
- return true;
+ if(!name) {
+ return false;
+ }
- logger(LOG_ERR, "No public key for %s specified!", c->name);
+ if(n->name) {
+ if(strcmp(n->name, name)) {
+ free(name);
+ return false;
+ }
- return false;
-}
+ free(name);
+ } else {
+ n->name = name;
+ }
+
+ char *submesh_name = packmsg_get_str_dup(&in);
-bool read_rsa_private_key(void) {
- FILE *fp;
- char *fname, *key, *pubkey;
- struct stat s;
+ if(!strcmp(submesh_name, CORE_MESH)) {
+ free(submesh_name);
+ n->submesh = NULL;
+ } else {
+ n->submesh = lookup_or_create_submesh(mesh, submesh_name);
+ free(submesh_name);
- 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!");
+ if(!n->submesh) {
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))
- xasprintf(&fname, "%s/rsa_key.priv", confbase);
+ n->devclass = packmsg_get_int32(&in);
+ n->status.blacklisted = packmsg_get_bool(&in);
+ const void *key;
+ uint32_t len = packmsg_get_bin_raw(&in, &key);
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(LOG_ERR, "Error reading RSA private key file `%s': %s",
- fname, strerror(errno));
- free(fname);
- return false;
- }
+ if(len) {
+ if(len != 32) {
+ 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);
- return false;
+ if(!ecdsa_active(n->ecdsa)) {
+ n->ecdsa = ecdsa_set_public_key(key);
+ }
}
- 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);
- fclose(fp);
+ n->canonical_address = packmsg_get_str_dup(&in);
+ uint32_t count = packmsg_get_array(&in);
- if(!myself->connection->rsa_key) {
- logger(LOG_ERR, "Reading RSA private key file `%s' failed: %s",
- fname, strerror(errno));
- free(fname);
- return false;
+ for(uint32_t i = 0; i < count; i++) {
+ if(i < MAX_RECENT) {
+ n->recent[i] = packmsg_get_sockaddr(&in);
+ } else {
+ packmsg_skip_element(&in);
+ }
}
- free(fname);
- return true;
+ n->last_reachable = packmsg_get_int64(&in);
+ n->last_unreachable = packmsg_get_int64(&in);
+
+ return packmsg_done(&in);
}
-/*
- Read Subnets from all host config files
-*/
-static void load_all_subnets(void) {
- DIR *dir;
- struct dirent *ent;
- char *dname;
- char *fname;
- avl_tree_t *config_tree;
- config_t *cfg;
- subnet_t *s;
- node_t *n;
- bool result;
-
- xasprintf(&dname, "%s/hosts", confbase);
- dir = opendir(dname);
- if(!dir) {
- logger(LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
- free(dname);
- return;
- }
-
- while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
- continue;
+bool node_write_config(meshlink_handle_t *mesh, node_t *n) {
+ if(!mesh->confbase) {
+ return true;
+ }
- n = lookup_node(ent->d_name);
- if(n)
- continue;
+ uint8_t buf[4096];
+ packmsg_output_t out = {buf, sizeof(buf)};
- #ifdef _DIRENT_HAVE_D_TYPE
- //if(ent->d_type != DT_REG)
- // continue;
- #endif
+ packmsg_add_uint32(&out, MESHLINK_CONFIG_VERSION);
+ packmsg_add_str(&out, n->name);
+ packmsg_add_str(&out, n->submesh ? n->submesh->name : CORE_MESH);
+ packmsg_add_int32(&out, n->devclass);
+ packmsg_add_bool(&out, n->status.blacklisted);
- xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name);
- init_configuration(&config_tree);
- result = read_config_file(config_tree, fname);
- free(fname);
- if(!result)
- continue;
+ if(ecdsa_active(n->ecdsa)) {
+ packmsg_add_bin(&out, ecdsa_get_public_key(n->ecdsa), 32);
+ } else {
+ packmsg_add_bin(&out, "", 0);
+ }
- n = new_node();
- n->name = xstrdup(ent->d_name);
- node_add(n);
+ packmsg_add_str(&out, n->canonical_address ? n->canonical_address : "");
- for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
- if(!get_config_subnet(cfg, &s))
- continue;
+ uint32_t count = 0;
- subnet_add(n, s);
+ for(uint32_t i = 0; i < MAX_RECENT; i++) {
+ if(n->recent[i].sa.sa_family) {
+ count++;
+ } else {
+ break;
}
-
- exit_configuration(&config_tree);
}
- closedir(dir);
-}
+ packmsg_add_array(&out, count);
-/*
- 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;
-
- myself = new_node();
- myself->connection = new_connection();
- init_configuration(&myself->connection->config_tree);
-
- myself->hostname = xstrdup("MYSELF");
- myself->connection->hostname = xstrdup("MYSELF");
-
- myself->connection->options = 0;
- myself->connection->protocol_version = PROT_CURRENT;
-
- if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */
- logger(LOG_ERR, "Name for tinc daemon required!");
- return false;
+ for(uint32_t i = 0; i < count; i++) {
+ packmsg_add_sockaddr(&out, &n->recent[i]);
}
- if(!check_id(name)) {
- logger(LOG_ERR, "Invalid name for myself!");
- free(name);
+ packmsg_add_int64(&out, n->last_reachable);
+ packmsg_add_int64(&out, n->last_unreachable);
+
+ if(!packmsg_output_ok(&out)) {
+ meshlink_errno = MESHLINK_EINTERNAL;
return false;
}
- myself->name = name;
- myself->connection->name = xstrdup(name);
+ config_t config = {buf, packmsg_output_size(&out, buf)};
- if(!read_connection_config(myself->connection)) {
- logger(LOG_ERR, "Cannot open host configuration file for myself!");
+ if(!config_write(mesh, "current", n->name, &config, mesh->config_key)) {
+ call_error_cb(mesh, MESHLINK_ESTORAGE);
return false;
}
- if(!read_rsa_private_key())
- return false;
-
- if(!get_config_string(lookup_config(config_tree, "Port"), &myport)
- && !get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport))
- myport = xstrdup("655");
-
- /* Read in all the subnets specified in the host configuration file */
-
- cfg = lookup_config(myself->connection->config_tree, "Subnet");
-
- while(cfg) {
- if(!get_config_subnet(cfg, &subnet))
- return false;
+ return true;
+}
- subnet_add(myself, subnet);
+static bool load_node(meshlink_handle_t *mesh, const char *name, void *priv) {
+ (void)priv;
- cfg = lookup_config_next(myself->connection->config_tree, cfg);
+ if(!check_id(name)) {
+ return true;
}
- /* Check some options */
-
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
- myself->options |= OPTION_INDIRECT;
-
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
- myself->options |= OPTION_TCPONLY;
+ node_t *n = lookup_node(mesh, name);
- if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice) && choice)
- myself->options |= OPTION_INDIRECT;
+ if(n) {
+ return true;
+ }
- if(get_config_bool(lookup_config(myself->connection->config_tree, "TCPOnly"), &choice) && choice)
- myself->options |= OPTION_TCPONLY;
+ n = new_node();
+ n->name = xstrdup(name);
- if(myself->options & OPTION_TCPONLY)
- myself->options |= OPTION_INDIRECT;
+ config_t config;
+ packmsg_input_t in;
- get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
- get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
- strictsubnets |= tunnelserver;
+ if(!node_get_config(mesh, n, &config, &in)) {
+ free_node(n);
+ return false;
+ }
- 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);
- }
-
- if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
- if(!strcasecmp(mode, "off"))
- routing_mode = FMODE_OFF;
- else if(!strcasecmp(mode, "internal"))
- routing_mode = FMODE_INTERNAL;
- else if(!strcasecmp(mode, "kernel"))
- routing_mode = FMODE_KERNEL;
- else {
- logger(LOG_ERR, "Invalid forwarding mode!");
- return false;
- }
- free(mode);
+ if(!node_read_from_config(mesh, n, &config)) {
+ logger(mesh, MESHLINK_ERROR, "Invalid config file for node %s", n->name);
+ config_free(&config);
+ free_node(n);
+ return false;
}
- choice = true;
- get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice);
- get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
- if(choice)
- myself->options |= OPTION_PMTU_DISCOVERY;
+ config_free(&config);
- choice = true;
- get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
- get_config_bool(lookup_config(myself->connection->config_tree, "ClampMSS"), &choice);
- if(choice)
- myself->options |= OPTION_CLAMP_MSS;
+ node_add(mesh, n);
- get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
+ return true;
+}
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
-#endif
+/*
+ Add listening sockets.
+*/
+static bool add_listen_address(meshlink_handle_t *mesh, char *address, bool bindto) {
+ char *port = mesh->myport;
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
- macexpire = 600;
+ if(address) {
+ char *space = strchr(address, ' ');
- if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
- if(maxtimeout <= 0) {
- logger(LOG_ERR, "Bogus maximum timeout!");
- return false;
+ if(space) {
+ *space++ = 0;
+ port = space;
}
- } 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!");
- return false;
+
+ if(!strcmp(address, "*")) {
+ *address = 0;
}
- free(afname);
}
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
+ struct addrinfo *ai;
- /* Generate packet encryption key */
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ .ai_flags = AI_PASSIVE,
+ };
- if(get_config_string
- (lookup_config(myself->connection->config_tree, "Cipher"), &cipher)) {
- if(!strcasecmp(cipher, "none")) {
- myself->incipher = NULL;
- } else {
- myself->incipher = EVP_get_cipherbyname(cipher);
+ int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
- 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;
-
- myself->connection->outcipher = EVP_bf_ofb();
+ free(address);
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
- keylifetime = 3600;
+ if(err || !ai) {
+ logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
+ return false;
+ }
- keyexpires = now + keylifetime;
-
- /* Check if we want to use message authentication codes... */
+ bool success = false;
- if(get_config_string(lookup_config(myself->connection->config_tree, "Digest"), &digest)) {
- if(!strcasecmp(digest, "none")) {
- myself->indigest = NULL;
- } else {
- myself->indigest = EVP_get_digestbyname(digest);
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ // Ignore duplicate addresses
+ bool found = false;
- if(!myself->indigest) {
- logger(LOG_ERR, "Unrecognized digest type!");
- return false;
+ 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;
}
- }
- } else
- myself->indigest = EVP_sha1();
-
- myself->connection->outdigest = EVP_sha1();
- if(get_config_int(lookup_config(myself->connection->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;
- }
+ if(found) {
+ continue;
}
- } else
- myself->inmaclength = 4;
-
- myself->connection->outmaclength = 0;
-
- /* Compression */
- if(get_config_int(lookup_config(myself->connection->config_tree, "Compression"), &myself->incompression)) {
- if(myself->incompression < 0 || myself->incompression > 11) {
- logger(LOG_ERR, "Bogus compression level!");
+ if(mesh->listen_sockets >= MAXSOCKETS) {
+ logger(mesh, MESHLINK_ERROR, "Too many listening sockets");
return false;
}
- } else
- myself->incompression = 0;
- myself->connection->outcompression = 0;
+ int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
- /* Done */
-
- myself->nexthop = myself;
- myself->via = myself;
- myself->status.reachable = true;
- node_add(myself);
+ if(tcp_fd < 0) {
+ continue;
+ }
- graph();
+ int udp_fd = setup_vpn_in_socket(mesh, (sockaddr_t *) aip->ai_addr);
- if(strictsubnets)
- load_all_subnets();
+ if(udp_fd < 0) {
+ close(tcp_fd);
+ continue;
+ }
- /* Open device */
+ 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);
- if(!setup_device())
- return false;
+ if(mesh->log_level >= MESHLINK_INFO) {
+ char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
+ logger(mesh, MESHLINK_INFO, "Listening on %s", hostname);
+ free(hostname);
+ }
- /* Run tinc-up script to further initialize the tap interface */
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
+ mesh->listen_socket[mesh->listen_sockets].bindto = bindto;
+ memcpy(&mesh->listen_socket[mesh->listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
+ memcpy(&mesh->listen_socket[mesh->listen_sockets].broadcast_sa, aip->ai_addr, aip->ai_addrlen);
- execute_script("tinc-up", envp);
+ if(aip->ai_family == AF_INET6) {
+ mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in6.sin6_addr.s6_addr[0x0] = 0xff;
+ mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in6.sin6_addr.s6_addr[0x1] = 0x02;
+ mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in6.sin6_addr.s6_addr[0xf] = 0x01;
+ } else {
+ mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in.sin_addr.s_addr = 0xffffffff;
+ }
- for(i = 0; i < 5; i++)
- free(envp[i]);
+ mesh->listen_sockets++;
+ success = true;
+ }
- /* Run subnet-up scripts for our own subnets */
+ freeaddrinfo(ai);
+ return success;
+}
- subnet_update(myself, NULL, true);
+/*
+ Configure node_t mesh->self and set up the local sockets (listen only)
+*/
+bool setup_myself(meshlink_handle_t *mesh) {
+ /* Set some defaults */
- /* Open sockets */
+ mesh->maxtimeout = 900;
- get_config_string(lookup_config(config_tree, "BindToAddress"), &address);
+ /* Done */
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
+ mesh->self->nexthop = mesh->self;
- err = getaddrinfo(address, myport, &hint, &ai);
+ node_add(mesh, mesh->self);
- if(err || !ai) {
- logger(LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
- gai_strerror(err));
- return false;
+ if(!config_scan_all(mesh, "current", "hosts", load_node, NULL)) {
+ logger(mesh, MESHLINK_WARNING, "Could not scan all host config files");
}
- listen_sockets = 0;
-
- for(aip = ai; aip; aip = aip->ai_next) {
- listen_socket[listen_sockets].tcp =
- setup_listen_socket((sockaddr_t *) aip->ai_addr);
+ /* Open sockets */
- if(listen_socket[listen_sockets].tcp < 0)
- continue;
+ mesh->listen_sockets = 0;
- listen_socket[listen_sockets].udp =
- setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+ if(!add_listen_address(mesh, NULL, NULL)) {
+ if(strcmp(mesh->myport, "0")) {
+ logger(mesh, MESHLINK_INFO, "Could not bind to port %s, asking OS to choose one for us", mesh->myport);
+ free(mesh->myport);
+ mesh->myport = strdup("0");
- if(listen_socket[listen_sockets].udp < 0)
- continue;
+ if(!mesh->myport) {
+ return false;
+ }
- ifdebug(CONNECTIONS) {
- hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(LOG_NOTICE, "Listening on %s", hostname);
- free(hostname);
+ if(!add_listen_address(mesh, NULL, NULL)) {
+ return false;
+ }
+ } else {
+ return false;
}
-
- memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
- listen_sockets++;
}
- freeaddrinfo(ai);
-
- if(listen_sockets)
- logger(LOG_NOTICE, "Ready");
- else {
- logger(LOG_ERR, "Unable to create any listening socket!");
+ if(!mesh->listen_sockets) {
+ logger(mesh, MESHLINK_ERROR, "Unable to create any listening socket!");
return false;
}
+ /* Done. */
+
+ mesh->last_config_check = mesh->loop.now.tv_sec;
+ mesh->last_unreachable = mesh->loop.now.tv_sec;
+
return true;
}
/*
initialize network
*/
-bool setup_network(void) {
- now = time(NULL);
-
- init_events();
- init_connections();
- init_subnets();
- init_nodes();
- init_edges();
- init_requests();
-
- if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
- if(pinginterval < 1) {
- pinginterval = 86400;
- }
- } else
- pinginterval = 60;
-
- if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
- pingtimeout = 5;
- if(pingtimeout < 1 || pingtimeout > pinginterval)
- pingtimeout = pinginterval;
-
- if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize))
- maxoutbufsize = 10 * MTU;
-
- if(!setup_myself())
+bool setup_network(meshlink_handle_t *mesh) {
+ init_connections(mesh);
+ init_submeshes(mesh);
+ init_nodes(mesh);
+ init_edges(mesh);
+ init_requests(mesh);
+
+ if(!setup_myself(mesh)) {
return false;
+ }
return true;
}
/*
close all open network connections
*/
-void close_network_connections(void) {
- avl_node_t *node, *next;
- connection_t *c;
- char *envp[5];
- int i;
-
- for(node = connection_tree->head; node; node = next) {
- next = node->next;
- c = node->data;
- c->outgoing = NULL;
- 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) {
- subnet_update(myself, NULL, false);
- terminate_connection(myself->connection, false);
- free_connection(myself->connection);
+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);
+ }
}
- for(i = 0; i < listen_sockets; i++) {
- close(listen_socket[i].tcp);
- close(listen_socket[i].udp);
+ 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);
}
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
-
- exit_requests();
- exit_edges();
- exit_subnets();
- exit_nodes();
- exit_connections();
- exit_events();
-
- execute_script("tinc-down", envp);
-
- if(myport) free(myport);
+ exit_requests(mesh);
+ exit_edges(mesh);
+ exit_nodes(mesh);
+ exit_submeshes(mesh);
+ exit_connections(mesh);
- for(i = 0; i < 4; i++)
- free(envp[i]);
+ free(mesh->myport);
+ mesh->myport = NULL;
- close_device();
+ mesh->self = NULL;
return;
}