/*
net_setup.c -- Setup.
- Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl>,
- 2000-2002 Guus Sliepen <guus@sliepen.eu.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
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: net_setup.c,v 1.1.2.33 2003/07/06 22:11:32 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 <errno.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <signal.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-/* SunOS really wants sys/socket.h BEFORE net/if.h,
- and FreeBSD wants these lines below the rest. */
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <net/if.h>
-#ifdef HAVE_NETINET_IN_SYSTM_H
-#include <netinet/in_systm.h>
-#endif
-#ifdef HAVE_NETINET_IP_H
-#include <netinet/ip.h>
-#endif
-#ifdef HAVE_NETINET_TCP_H
-#include <netinet/tcp.h>
-#endif
-
-#include <openssl/pem.h>
-#include <openssl/rsa.h>
-#include <openssl/rand.h>
-
-#include <utils.h>
-#include <xalloc.h>
-#include <avl_tree.h>
-#include <list.h>
+#include "system.h"
#include "conf.h"
#include "connection.h"
-#include "meta.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 "subnet.h"
-#include "graph.h"
-#include "process.h"
#include "route.h"
-#include "device.h"
-#include "event.h"
-#include "logger.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;
+ }
-#include "system.h"
+ in->ptr = config->buf;
+ in->len = config->len;
-char *myport;
+ uint32_t version = packmsg_get_uint32(in);
-int read_rsa_public_key(connection_t *c)
-{
- FILE *fp;
- char *fname;
- char *key;
+ if(version != MESHLINK_CONFIG_VERSION) {
+ logger(mesh, MESHLINK_ERROR, "Invalid config file for node %s", n->name);
+ config_free(config);
+ return false;
+ }
- cp();
+ const char *name;
+ uint32_t len = packmsg_get_str_raw(in, &name);
- if(!c->rsa_key) {
- c->rsa_key = RSA_new();
-// RSA_blinding_on(c->rsa_key, NULL);
+ 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;
}
- /* First, check for simple PublicKey statement */
+ 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);
- return 0;
+/// 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)) {
- if(is_safe_path(fname)) {
- fp = fopen(fname, "r");
-
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
+ if(!node_get_config(mesh, n, &config, &in)) {
+ return false;
+ }
- free(fname);
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ packmsg_skip_element(&in); /* submesh */
+ packmsg_get_int32(&in); /* devclass */
+ packmsg_get_bool(&in); /* blacklisted */
- if(c->rsa_key)
- return 0; /* Woohoo. */
+ const void *key;
+ uint32_t len = packmsg_get_bin_raw(&in, &key);
- /* If it fails, try PEM_read_RSA_PUBKEY. */
- fp = fopen(fname, "r");
+ if(len != 32) {
+ config_free(&config);
+ return false;
+ }
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
+ n->ecdsa = ecdsa_set_public_key(key);
- free(fname);
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ // 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);
+ }
- if(c->rsa_key) {
-// RSA_blinding_on(c->rsa_key, NULL);
- return 0;
- }
+ // Append any known addresses in the config file to the list we currently have
+ uint32_t known_count = 0;
- logger(DEBUG_ALWAYS, LOG_ERR, _("Reading RSA public key file `%s' failed: %s"),
- fname, strerror(errno));
- return -1;
- } else {
- free(fname);
- return -1;
+ for(uint32_t i = 0; i < MAX_RECENT; i++) {
+ if(n->recent[i].sa.sa_family) {
+ known_count++;
}
}
- /* Else, check if a harnessed public key is in the config file */
-
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- fp = fopen(fname, "r");
+ uint32_t count = packmsg_get_array(&in);
- if(fp) {
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ 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);
+ }
}
- free(fname);
+ time_t last_reachable = packmsg_get_int64(&in);
+ time_t last_unreachable = packmsg_get_int64(&in);
- if(c->rsa_key)
- return 0;
+ if(!n->last_reachable) {
+ n->last_reachable = last_reachable;
+ }
- /* Try again with PEM_read_RSA_PUBKEY. */
+ if(!n->last_unreachable) {
+ n->last_unreachable = last_unreachable;
+ }
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- fp = fopen(fname, "r");
+ config_free(&config);
+ return true;
+}
- if(fp) {
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
-// RSA_blinding_on(c->rsa_key, NULL);
- fclose(fp);
+/// 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;
}
- free(fname);
+ packmsg_input_t in = {config->buf, config->len};
+ uint32_t version = packmsg_get_uint32(&in);
- if(c->rsa_key)
- return 0;
+ if(version != MESHLINK_CONFIG_VERSION) {
+ return false;
+ }
- logger(DEBUG_ALWAYS, LOG_ERR, _("No public key for %s specified!"), c->name);
+ char *name = packmsg_get_str_dup(&in);
- return -1;
-}
-
-int read_rsa_private_key(void)
-{
- FILE *fp;
- char *fname, *key;
+ if(!name) {
+ return false;
+ }
- cp();
+ if(n->name) {
+ if(strcmp(n->name, name)) {
+ free(name);
+ return false;
+ }
- if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) {
- 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->e, "FFFF");
- free(key);
- return 0;
+ free(name);
+ } else {
+ n->name = name;
}
- if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
- asprintf(&fname, "%s/rsa_key.priv", confbase);
+ char *submesh_name = packmsg_get_str_dup(&in);
- if(is_safe_path(fname)) {
- fp = fopen(fname, "r");
+ 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(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Error reading RSA private key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
+ if(!n->submesh) {
+ return false;
}
+ }
- free(fname);
- myself->connection->rsa_key =
- PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);
- fclose(fp);
+ 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);
- if(!myself->connection->rsa_key) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Reading RSA private key file `%s' failed: %s"),
- fname, strerror(errno));
- return -1;
+ if(len) {
+ if(len != 32) {
+ return false;
}
- return 0;
+ if(!ecdsa_active(n->ecdsa)) {
+ n->ecdsa = ecdsa_set_public_key(key);
+ }
}
- free(fname);
- return -1;
-}
-
-/*
- Configure node_t myself and set up the local sockets (listen only)
-*/
-int setup_myself(void)
-{
- config_t *cfg;
- subnet_t *subnet;
- char *name, *hostname, *mode, *afname, *cipher, *digest;
- char *address = NULL;
- struct addrinfo hint, *ai, *aip;
- int choice, err;
-
- cp();
-
- myself = new_node();
- myself->connection = new_connection();
- init_configuration(&myself->connection->config_tree);
+ n->canonical_address = packmsg_get_str_dup(&in);
+ uint32_t count = packmsg_get_array(&in);
- asprintf(&myself->hostname, _("MYSELF"));
- asprintf(&myself->connection->hostname, _("MYSELF"));
+ for(uint32_t i = 0; i < count; i++) {
+ if(i < MAX_RECENT) {
+ n->recent[i] = packmsg_get_sockaddr(&in);
+ } else {
+ packmsg_skip_element(&in);
+ }
+ }
- myself->connection->options = 0;
- myself->connection->protocol_version = PROT_CURRENT;
+ n->last_reachable = packmsg_get_int64(&in);
+ n->last_unreachable = packmsg_get_int64(&in);
- if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */
- logger(DEBUG_ALWAYS, LOG_ERR, _("Name for tinc daemon required!"));
- return -1;
- }
+ return packmsg_done(&in);
+}
- if(check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Invalid name for myself!"));
- free(name);
- return -1;
+bool node_write_config(meshlink_handle_t *mesh, node_t *n) {
+ if(!mesh->confbase) {
+ return true;
}
- myself->name = name;
- myself->connection->name = xstrdup(name);
+ uint8_t buf[4096];
+ packmsg_output_t out = {buf, sizeof(buf)};
- if(read_rsa_private_key())
- return -1;
+ 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);
- if(read_connection_config(myself->connection)) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Cannot open host configuration file for myself!"));
- return -1;
+ if(ecdsa_active(n->ecdsa)) {
+ packmsg_add_bin(&out, ecdsa_get_public_key(n->ecdsa), 32);
+ } else {
+ packmsg_add_bin(&out, "", 0);
}
- if(read_rsa_public_key(myself->connection))
- return -1;
-
- if(!get_config_string
- (lookup_config(myself->connection->config_tree, "Port"), &myport))
- asprintf(&myport, "655");
+ packmsg_add_str(&out, n->canonical_address ? n->canonical_address : "");
- /* Read in all the subnets specified in the host configuration file */
+ uint32_t count = 0;
- cfg = lookup_config(myself->connection->config_tree, "Subnet");
-
- while(cfg) {
- if(!get_config_subnet(cfg, &subnet))
- return -1;
+ for(uint32_t i = 0; i < MAX_RECENT; i++) {
+ if(n->recent[i].sa.sa_family) {
+ count++;
+ } else {
+ break;
+ }
+ }
- subnet_add(myself, subnet);
+ packmsg_add_array(&out, count);
- cfg = lookup_config_next(myself->connection->config_tree, cfg);
+ for(uint32_t i = 0; i < count; i++) {
+ packmsg_add_sockaddr(&out, &n->recent[i]);
}
- /* Check some options */
+ packmsg_add_int64(&out, n->last_reachable);
+ packmsg_add_int64(&out, n->last_unreachable);
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice))
- if(choice)
- myself->options |= OPTION_INDIRECT;
+ if(!packmsg_output_ok(&out)) {
+ meshlink_errno = MESHLINK_EINTERNAL;
+ return false;
+ }
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice))
- if(choice)
- myself->options |= OPTION_TCPONLY;
+ config_t config = {buf, packmsg_output_size(&out, buf)};
- if(get_config_bool
- (lookup_config(myself->connection->config_tree, "IndirectData"),
- &choice))
- if(choice)
- myself->options |= OPTION_INDIRECT;
+ if(!config_write(mesh, "current", n->name, &config, mesh->config_key)) {
+ call_error_cb(mesh, MESHLINK_ESTORAGE);
+ return false;
+ }
- if(get_config_bool
- (lookup_config(myself->connection->config_tree, "TCPOnly"), &choice))
- if(choice)
- myself->options |= OPTION_TCPONLY;
+ return true;
+}
- if(myself->options & OPTION_TCPONLY)
- myself->options |= OPTION_INDIRECT;
+static bool load_node(meshlink_handle_t *mesh, const char *name, void *priv) {
+ (void)priv;
- 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(DEBUG_ALWAYS, LOG_ERR, _("Invalid routing mode!"));
- return -1;
- }
- free(mode);
- } else
- routing_mode = RMODE_ROUTER;
-
- get_config_bool(lookup_config(config_tree, "PriorityInheritance"),
- &priorityinheritance);
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- logger(DEBUG_ALWAYS, LOG_WARNING, _("PriorityInheritance not supported on this platform"));
-#endif
-
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
- macexpire = 600;
-
- if(get_config_int
- (lookup_config(myself->connection->config_tree, "MaxTimeout"),
- &maxtimeout)) {
- if(maxtimeout <= 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Bogus maximum timeout!"));
- return -1;
- }
- } 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(DEBUG_ALWAYS, LOG_ERR, _("Invalid address family!"));
- return -1;
- }
- free(afname);
+ if(!check_id(name)) {
+ return true;
}
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
+ node_t *n = lookup_node(mesh, name);
- /* Generate packet encryption key */
+ if(n) {
+ return true;
+ }
- 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);
+ n = new_node();
+ n->name = xstrdup(name);
- if(!myself->cipher) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Unrecognized cipher type!"));
- return -1;
- }
- }
- } else
- myself->cipher = EVP_bf_cbc();
+ config_t config;
+ packmsg_input_t in;
- if(myself->cipher)
- myself->keylength = myself->cipher->key_len + myself->cipher->iv_len;
- else
- myself->keylength = 1;
+ if(!node_get_config(mesh, n, &config, &in)) {
+ free_node(n);
+ return false;
+ }
- myself->connection->outcipher = EVP_bf_ofb();
+ 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;
+ }
- myself->key = (char *) xmalloc(myself->keylength);
- RAND_pseudo_bytes(myself->key, myself->keylength);
+ config_free(&config);
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
- keylifetime = 3600;
+ node_add(mesh, n);
- keyexpires = now + keylifetime;
-
- EVP_CIPHER_CTX_init(&packet_ctx);
- EVP_DecryptInit_ex(&packet_ctx, myself->cipher, NULL, myself->key, myself->key + myself->cipher->key_len);
+ return true;
+}
- /* Check if we want to use message authentication codes... */
+/*
+ Add listening sockets.
+*/
+static bool add_listen_address(meshlink_handle_t *mesh, char *address, bool bindto) {
+ char *port = mesh->myport;
- 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);
+ if(address) {
+ char *space = strchr(address, ' ');
- if(!myself->digest) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Unrecognized digest type!"));
- return -1;
- }
- }
- } 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(DEBUG_ALWAYS, LOG_ERR, _("MAC length exceeds size of digest!"));
- return -1;
- } else if(myself->maclength < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Bogus MAC length!"));
- return -1;
- }
+ if(space) {
+ *space++ = 0;
+ port = space;
}
- } else
- myself->maclength = 4;
-
- myself->connection->outmaclength = 0;
- /* Compression */
-
- if(get_config_int
- (lookup_config(myself->connection->config_tree, "Compression"),
- &myself->compression)) {
- if(myself->compression < 0 || myself->compression > 11) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Bogus compression level!"));
- return -1;
+ if(!strcmp(address, "*")) {
+ *address = 0;
}
- } else
- myself->compression = 0;
+ }
- myself->connection->outcompression = 0;
+ struct addrinfo *ai;
- /* Done */
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ .ai_flags = AI_PASSIVE,
+ };
- myself->nexthop = myself;
- myself->via = myself;
- myself->status.active = 1;
- myself->status.reachable = 1;
- node_add(myself);
+ int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
- graph();
+ free(address);
- /* Open sockets */
-
- memset(&hint, 0, sizeof(hint));
+ if(err || !ai) {
+ logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
+ return false;
+ }
- get_config_string(lookup_config(config_tree, "BindToAddress"), &address);
+ bool success = false;
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ // Ignore duplicate addresses
+ bool found = false;
- err = getaddrinfo(address, myport, &hint, &ai);
+ 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(err || !ai) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo",
- gai_strerror(err));
- return -1;
- }
+ if(found) {
+ continue;
+ }
- listen_sockets = 0;
+ if(mesh->listen_sockets >= MAXSOCKETS) {
+ logger(mesh, MESHLINK_ERROR, "Too many listening sockets");
+ return false;
+ }
- for(aip = ai; aip; aip = aip->ai_next) {
- listen_socket[listen_sockets].tcp =
- setup_listen_socket((sockaddr_t *) aip->ai_addr);
+ int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
- if(listen_socket[listen_sockets].tcp < 0)
+ if(tcp_fd < 0) {
continue;
+ }
- listen_socket[listen_sockets].udp =
- setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+ int udp_fd = setup_vpn_in_socket(mesh, (sockaddr_t *) aip->ai_addr);
- if(listen_socket[listen_sockets].udp < 0)
+ if(udp_fd < 0) {
+ close(tcp_fd);
continue;
+ }
+
+ 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(debug_level >= DEBUG_CONNECTIONS) {
- hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(DEBUG_ALWAYS, LOG_NOTICE, _("Listening on %s"), hostname);
+ if(mesh->log_level >= MESHLINK_INFO) {
+ char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
+ logger(mesh, MESHLINK_INFO, "Listening on %s", hostname);
free(hostname);
}
- listen_socket[listen_sockets].sa.sa = *aip->ai_addr;
- listen_sockets++;
- }
+ 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);
- freeaddrinfo(ai);
+ 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;
+ }
- if(listen_sockets)
- logger(DEBUG_ALWAYS, LOG_NOTICE, _("Ready"));
- else {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Unable to create any listening socket!"));
- return -1;
+ mesh->listen_sockets++;
+ success = true;
}
- return 0;
+ freeaddrinfo(ai);
+ return success;
}
/*
- setup all initial network connections
+ Configure node_t mesh->self and set up the local sockets (listen only)
*/
-int setup_network_connections(void)
-{
- char *envp[5];
- int i;
+bool setup_myself(meshlink_handle_t *mesh) {
+ /* Set some defaults */
- cp();
+ mesh->maxtimeout = 900;
- now = time(NULL);
+ /* Done */
- init_connections();
- init_subnets();
- init_nodes();
- init_edges();
- init_events();
- init_requests();
+ mesh->self->nexthop = mesh->self;
- if(get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout)) {
- if(pingtimeout < 1) {
- pingtimeout = 86400;
- }
- } else
- pingtimeout = 60;
+ node_add(mesh, mesh->self);
- if(setup_device() < 0)
- return -1;
+ if(!config_scan_all(mesh, "current", "hosts", load_node, NULL)) {
+ logger(mesh, MESHLINK_WARNING, "Could not scan all host config files");
+ }
- if(setup_myself() < 0)
- return -1;
+ /* Open sockets */
- /* 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", interface ? : "");
- asprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
+ mesh->listen_sockets = 0;
- execute_script("tinc-up", envp);
+ 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");
- for(i = 0; i < 5; i++)
- free(envp[i]);
+ if(!mesh->myport) {
+ return false;
+ }
- try_outgoing_connections();
+ if(!add_listen_address(mesh, NULL, NULL)) {
+ return false;
+ }
+ } else {
+ return false;
+ }
+ }
- return 0;
-}
+ if(!mesh->listen_sockets) {
+ logger(mesh, MESHLINK_ERROR, "Unable to create any listening socket!");
+ return false;
+ }
-/*
- close all open network connections
-*/
-void close_network_connections(void)
-{
- avl_node_t *node, *next;
- connection_t *c;
- char *envp[5];
- int i;
+ /* Done. */
- cp();
+ mesh->last_config_check = mesh->loop.now.tv_sec;
+ mesh->last_unreachable = mesh->loop.now.tv_sec;
- for(node = connection_tree->head; node; node = next) {
- next = node->next;
- c = (connection_t *) node->data;
+ return true;
+}
- if(c->outgoing)
- free(c->outgoing->name), free(c->outgoing), c->outgoing = NULL;
- terminate_connection(c, 0);
+/*
+ initialize network
+*/
+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;
}
- if(myself && myself->connection)
- terminate_connection(myself->connection, 0);
+ return true;
+}
- for(i = 0; i < listen_sockets; i++) {
- close(listen_socket[i].tcp);
- close(listen_socket[i].udp);
+/*
+ close all open network connections
+*/
+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);
+ }
}
- exit_requests();
- exit_events();
- exit_edges();
- exit_subnets();
- exit_nodes();
- exit_connections();
-
- asprintf(&envp[0], "NETNAME=%s", netname ? : "");
- asprintf(&envp[1], "DEVICE=%s", device ? : "");
- asprintf(&envp[2], "INTERFACE=%s", interface ? : "");
- asprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
+ 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);
+ }
- execute_script("tinc-down", envp);
+ 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;
}
projects / meshlink / blobdiff