/*
net_setup.c -- Setup.
- Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2013 Guus Sliepen <guus@tinc-vpn.org>
- 2006 Scott Lamb <slamb@slamb.org>
- 2010 Brandon Black <blblack@gmail.com>
+ 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 "cipher.h"
#include "conf.h"
#include "connection.h"
-#include "control.h"
-#include "device.h"
-#include "digest.h"
#include "ecdsa.h"
#include "graph.h"
#include "logger.h"
-#include "names.h"
+#include "meshlink_internal.h"
#include "net.h"
#include "netutl.h"
-#include "process.h"
+#include "packmsg.h"
#include "protocol.h"
#include "route.h"
-#include "rsa.h"
-#include "script.h"
-#include "subnet.h"
#include "utils.h"
#include "xalloc.h"
+#include "submesh.h"
-char *myport;
-static io_t device_io;
-devops_t devops;
-
-char *proxyhost;
-char *proxyport;
-char *proxyuser;
-char *proxypass;
-proxytype_t proxytype;
-int autoconnect;
-bool disablebuggypeers;
-
-char *scriptinterpreter;
-char *scriptextension;
-
-bool node_read_ecdsa_public_key(node_t *n) {
- if(ecdsa_active(n->ecdsa))
- return true;
-
- splay_tree_t *config_tree;
- FILE *fp;
- char *pubname = NULL;
- char *p;
+/// 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;
+ }
- init_configuration(&config_tree);
- if(!read_host_config(config_tree, n->name))
- goto exit;
+ in->ptr = config->buf;
+ in->len = config->len;
- /* First, check for simple ECDSAPublicKey statement */
+ uint32_t version = packmsg_get_uint32(in);
- if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
- n->ecdsa = ecdsa_set_base64_public_key(p);
- free(p);
- goto exit;
+ if(version != MESHLINK_CONFIG_VERSION) {
+ logger(mesh, MESHLINK_ERROR, "Invalid config file for node %s", n->name);
+ config_free(config);
+ return false;
}
- /* Else, check for ECDSAPublicKeyFile statement and read it */
+ const char *name;
+ uint32_t len = packmsg_get_str_raw(in, &name);
- if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname))
- xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
-
- fp = fopen(pubname, "r");
-
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", pubname, strerror(errno));
- goto exit;
+ 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;
}
- n->ecdsa = ecdsa_read_pem_public_key(fp);
- fclose(fp);
-
-exit:
- exit_configuration(&config_tree);
- free(pubname);
- return n->ecdsa;
+ return true;
}
-bool read_ecdsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
+/// 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;
-
- FILE *fp;
- char *fname;
- char *p;
-
- if(!c->config_tree) {
- init_configuration(&c->config_tree);
- if(!read_host_config(c->config_tree, c->name))
- return false;
}
- /* First, check for simple ECDSAPublicKey statement */
+ config_t config;
+ packmsg_input_t in;
- if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
- c->ecdsa = ecdsa_set_base64_public_key(p);
- free(p);
- return c->ecdsa;
+ if(!node_get_config(mesh, n, &config, &in)) {
+ return false;
}
- /* Else, check for ECDSAPublicKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
+ packmsg_skip_element(&in); /* submesh */
+ packmsg_get_int32(&in); /* devclass */
+ packmsg_get_bool(&in); /* blacklisted */
- fp = fopen(fname, "r");
+ const void *key;
+ uint32_t len = packmsg_get_bin_raw(&in, &key);
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s",
- fname, strerror(errno));
- free(fname);
+ if(len != 32) {
+ config_free(&config);
return false;
}
- c->ecdsa = ecdsa_read_pem_public_key(fp);
- fclose(fp);
-
- if(!c->ecdsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
- free(fname);
- return c->ecdsa;
-}
-
-bool read_rsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
- return true;
+ n->ecdsa = ecdsa_set_public_key(key);
- FILE *fp;
- char *fname;
- char *n;
+ // 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);
+ }
- /* First, check for simple PublicKey statement */
+ // Append any known addresses in the config file to the list we currently have
+ uint32_t known_count = 0;
- if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
- c->rsa = rsa_set_hex_public_key(n, "FFFF");
- free(n);
- return c->rsa;
+ for(uint32_t i = 0; i < MAX_RECENT; i++) {
+ if(n->recent[i].sa.sa_family) {
+ known_count++;
+ }
}
- /* Else, check for PublicKeyFile statement and read it */
+ uint32_t count = packmsg_get_array(&in);
- if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
+ 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);
+ }
+ }
- fp = fopen(fname, "r");
+ time_t last_reachable = packmsg_get_int64(&in);
+ time_t last_unreachable = packmsg_get_int64(&in);
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
- free(fname);
- return false;
+ if(!n->last_reachable) {
+ n->last_reachable = last_reachable;
}
- c->rsa = rsa_read_pem_public_key(fp);
- fclose(fp);
+ if(!n->last_unreachable) {
+ n->last_unreachable = last_unreachable;
+ }
- if(!c->rsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
- free(fname);
- return c->rsa;
+ config_free(&config);
+ return true;
}
-static bool read_ecdsa_private_key(void) {
- FILE *fp;
- char *fname;
-
- /* Check for PrivateKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "ecdsa_key.priv", confbase);
+/// 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;
+ }
- fp = fopen(fname, "r");
+ packmsg_input_t in = {config->buf, config->len};
+ uint32_t version = packmsg_get_uint32(&in);
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno));
- if(errno == ENOENT)
- logger(DEBUG_ALWAYS, LOG_INFO, "Create an ECDSA keypair with `tinc -n %s generate-ecdsa-keys'.", netname ?: ".");
- free(fname);
+ if(version != MESHLINK_CONFIG_VERSION) {
return false;
}
-#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
- struct stat s;
+ char *name = packmsg_get_str_dup(&in);
- if(fstat(fileno(fp), &s)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno));
- free(fname);
+ if(!name) {
return false;
}
- if(s.st_mode & ~0100700)
- logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
-#endif
-
- myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
- fclose(fp);
-
- if(!myself->connection->ecdsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
- free(fname);
- return myself->connection->ecdsa;
-}
-
-static bool read_invitation_key(void) {
- FILE *fp;
- char *fname;
+ if(n->name) {
+ if(strcmp(n->name, name)) {
+ free(name);
+ return false;
+ }
- if(invitation_key) {
- ecdsa_free(invitation_key);
- invitation_key = NULL;
+ free(name);
+ } else {
+ n->name = name;
}
- xasprintf(&fname, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", confbase);
+ char *submesh_name = packmsg_get_str_dup(&in);
- fp = fopen(fname, "r");
-
- if(fp) {
- invitation_key = ecdsa_read_pem_private_key(fp);
- fclose(fp);
- if(!invitation_key)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
- }
-
- free(fname);
- return invitation_key;
-}
-
-static bool read_rsa_private_key(void) {
- FILE *fp;
- char *fname;
- char *n, *d;
-
- /* First, check for simple PrivateKey statement */
+ 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"), &d)) {
- if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
- free(d);
+ if(!n->submesh) {
return false;
}
- myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
- free(n);
- free(d);
- return myself->connection->rsa;
}
- /* Else, check for PrivateKeyFile statement and read it */
-
- if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "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(len) {
+ if(len != 32) {
+ return false;
+ }
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading 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 !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
- struct stat s;
+ n->canonical_address = packmsg_get_str_dup(&in);
+ uint32_t count = packmsg_get_array(&in);
- if(fstat(fileno(fp), &s)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %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);
+ }
}
- if(s.st_mode & ~0100700)
- logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
-#endif
+ n->last_reachable = packmsg_get_int64(&in);
+ n->last_unreachable = packmsg_get_int64(&in);
- myself->connection->rsa = rsa_read_pem_private_key(fp);
- fclose(fp);
-
- if(!myself->connection->rsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
- free(fname);
- return myself->connection->rsa;
+ return packmsg_done(&in);
}
-static timeout_t keyexpire_timeout;
+bool node_write_config(meshlink_handle_t *mesh, node_t *n) {
+ if(!mesh->confbase) {
+ return true;
+ }
-static void keyexpire_handler(void *data) {
- regenerate_key();
- timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
-}
+ uint8_t buf[4096];
+ packmsg_output_t out = {buf, sizeof(buf)};
-void regenerate_key(void) {
- logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
- send_key_changed();
-}
+ 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);
-/*
- Read Subnets from all host config files
-*/
-void load_all_subnets(void) {
- DIR *dir;
- struct dirent *ent;
- char *dname;
-
- xasprintf(&dname, "%s" SLASH "hosts", confbase);
- dir = opendir(dname);
- if(!dir) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
- free(dname);
- return;
+ if(ecdsa_active(n->ecdsa)) {
+ packmsg_add_bin(&out, ecdsa_get_public_key(n->ecdsa), 32);
+ } else {
+ packmsg_add_bin(&out, "", 0);
}
- while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
- continue;
-
- node_t *n = lookup_node(ent->d_name);
- #ifdef _DIRENT_HAVE_D_TYPE
- //if(ent->d_type != DT_REG)
- // continue;
- #endif
-
- splay_tree_t *config_tree;
- init_configuration(&config_tree);
- read_config_options(config_tree, ent->d_name);
- read_host_config(config_tree, ent->d_name);
-
- if(!n) {
- n = new_node();
- n->name = xstrdup(ent->d_name);
- node_add(n);
- }
-
- for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
- subnet_t *s, *s2;
+ packmsg_add_str(&out, n->canonical_address ? n->canonical_address : "");
- if(!get_config_subnet(cfg, &s))
- continue;
+ uint32_t count = 0;
- if((s2 = lookup_subnet(n, s))) {
- s2->expires = -1;
- } else {
- 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);
-void load_all_nodes(void) {
- DIR *dir;
- struct dirent *ent;
- char *dname;
-
- xasprintf(&dname, "%s" SLASH "hosts", confbase);
- dir = opendir(dname);
- if(!dir) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
- free(dname);
- return;
+ for(uint32_t i = 0; i < count; i++) {
+ packmsg_add_sockaddr(&out, &n->recent[i]);
}
- while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
- continue;
-
- node_t *n = lookup_node(ent->d_name);
- if(n)
- continue;
+ packmsg_add_int64(&out, n->last_reachable);
+ packmsg_add_int64(&out, n->last_unreachable);
- n = new_node();
- n->name = xstrdup(ent->d_name);
- node_add(n);
+ if(!packmsg_output_ok(&out)) {
+ meshlink_errno = MESHLINK_EINTERNAL;
+ return false;
}
- closedir(dir);
-}
-
+ config_t config = {buf, packmsg_output_size(&out, buf)};
-char *get_name(void) {
- char *name = NULL;
+ if(!config_write(mesh, "current", n->name, &config, mesh->config_key)) {
+ call_error_cb(mesh, MESHLINK_ESTORAGE);
+ return false;
+ }
- get_config_string(lookup_config(config_tree, "Name"), &name);
+ return true;
+}
- if(!name)
- return NULL;
-
- if(*name == '$') {
- char *envname = getenv(name + 1);
- char hostname[32] = "";
- if(!envname) {
- if(strcmp(name + 1, "HOST")) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1);
- return false;
- }
- if(gethostname(hostname, sizeof hostname) || !*hostname) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno));
- return false;
- }
- hostname[31] = 0;
- envname = hostname;
- }
- free(name);
- name = xstrdup(envname);
- for(char *c = name; *c; c++)
- if(!isalnum(*c))
- *c = '_';
- }
+static bool load_node(meshlink_handle_t *mesh, const char *name, void *priv) {
+ (void)priv;
if(!check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
- free(name);
- return false;
+ return true;
}
- return name;
-}
+ node_t *n = lookup_node(mesh, name);
-bool setup_myself_reloadable(void) {
- char *proxy = NULL;
- char *rmode = NULL;
- char *fmode = NULL;
- char *bmode = NULL;
- char *afname = NULL;
- char *address = NULL;
- char *space;
- bool choice;
-
- free(scriptinterpreter);
- scriptinterpreter = NULL;
- get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
-
-
- free(scriptextension);
- if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
- scriptextension = xstrdup("");
-
- get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
- if(proxy) {
- if((space = strchr(proxy, ' ')))
- *space++ = 0;
-
- if(!strcasecmp(proxy, "none")) {
- proxytype = PROXY_NONE;
- } else if(!strcasecmp(proxy, "socks4")) {
- proxytype = PROXY_SOCKS4;
- } else if(!strcasecmp(proxy, "socks4a")) {
- proxytype = PROXY_SOCKS4A;
- } else if(!strcasecmp(proxy, "socks5")) {
- proxytype = PROXY_SOCKS5;
- } else if(!strcasecmp(proxy, "http")) {
- proxytype = PROXY_HTTP;
- } else if(!strcasecmp(proxy, "exec")) {
- proxytype = PROXY_EXEC;
- } else {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
- return false;
- }
+ if(n) {
+ return true;
+ }
- switch(proxytype) {
- case PROXY_NONE:
- default:
- break;
+ n = new_node();
+ n->name = xstrdup(name);
- case PROXY_EXEC:
- if(!space || !*space) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
- return false;
- }
- proxyhost = xstrdup(space);
- break;
+ config_t config;
+ packmsg_input_t in;
- case PROXY_SOCKS4:
- case PROXY_SOCKS4A:
- case PROXY_SOCKS5:
- case PROXY_HTTP:
- proxyhost = space;
- if(space && (space = strchr(space, ' ')))
- *space++ = 0, proxyport = space;
- if(space && (space = strchr(space, ' ')))
- *space++ = 0, proxyuser = space;
- if(space && (space = strchr(space, ' ')))
- *space++ = 0, proxypass = space;
- if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
- return false;
- }
- proxyhost = xstrdup(proxyhost);
- proxyport = xstrdup(proxyport);
- if(proxyuser && *proxyuser)
- proxyuser = xstrdup(proxyuser);
- if(proxypass && *proxypass)
- proxypass = xstrdup(proxypass);
- break;
- }
+ if(!node_get_config(mesh, n, &config, &in)) {
+ free_node(n);
+ return false;
+ }
- free(proxy);
+ 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;
}
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
- myself->options |= OPTION_INDIRECT;
+ config_free(&config);
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
- myself->options |= OPTION_TCPONLY;
+ node_add(mesh, n);
- if(myself->options & OPTION_TCPONLY)
- myself->options |= OPTION_INDIRECT;
+ return true;
+}
- get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
- get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
+int setup_tcp_listen_socket(meshlink_handle_t *mesh, const struct addrinfo *aip) {
+ int nfd = socket(aip->ai_family, SOCK_STREAM, IPPROTO_TCP);
- memset(&localdiscovery_address, 0, sizeof localdiscovery_address);
- if(get_config_string(lookup_config(config_tree, "LocalDiscoveryAddress"), &address)) {
- struct addrinfo *ai = str2addrinfo(address, myport, SOCK_DGRAM);
- free(address);
- if(!ai)
- return false;
- memcpy(&localdiscovery_address, ai->ai_addr, ai->ai_addrlen);
+ if(nfd == -1) {
+ return -1;
}
+#ifdef FD_CLOEXEC
+ fcntl(nfd, F_SETFD, FD_CLOEXEC);
+#endif
- if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
- if(!strcasecmp(rmode, "router"))
- routing_mode = RMODE_ROUTER;
- else if(!strcasecmp(rmode, "switch"))
- routing_mode = RMODE_SWITCH;
- else if(!strcasecmp(rmode, "hub"))
- routing_mode = RMODE_HUB;
- else {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
- return false;
- }
- free(rmode);
- }
+ int option = 1;
+ setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof(option));
- if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
- if(!strcasecmp(fmode, "off"))
- forwarding_mode = FMODE_OFF;
- else if(!strcasecmp(fmode, "internal"))
- forwarding_mode = FMODE_INTERNAL;
- else if(!strcasecmp(fmode, "kernel"))
- forwarding_mode = FMODE_KERNEL;
- else {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
- return false;
- }
- free(fmode);
- }
+#if defined(IPV6_V6ONLY)
- choice = true;
- get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
- if(choice)
- myself->options |= OPTION_PMTU_DISCOVERY;
-
- choice = true;
- get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
- if(choice)
- myself->options |= OPTION_CLAMP_MSS;
-
- get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
- get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl);
- if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
- if(!strcasecmp(bmode, "no"))
- broadcast_mode = BMODE_NONE;
- else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
- broadcast_mode = BMODE_MST;
- else if(!strcasecmp(bmode, "direct"))
- broadcast_mode = BMODE_DIRECT;
- else {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
- return false;
- }
- free(bmode);
+ if(aip->ai_family == AF_INET6) {
+ setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option));
}
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
+#else
+#warning IPV6_V6ONLY not defined
#endif
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
- macexpire = 600;
-
- if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
- if(maxtimeout <= 0) {
- logger(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
- return false;
- }
- free(afname);
+ if(bind(nfd, aip->ai_addr, aip->ai_addrlen)) {
+ closesocket(nfd);
+ return -1;
}
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
-
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
- keylifetime = 3600;
-
- get_config_int(lookup_config(config_tree, "AutoConnect"), &autoconnect);
- if(autoconnect < 0)
- autoconnect = 0;
-
- get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
-
- read_invitation_key();
+ if(listen(nfd, 3)) {
+ logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "listen", sockstrerror(sockerrno));
+ closesocket(nfd);
+ return -1;
+ }
- return true;
+ return nfd;
}
-/*
- Configure node_t myself and set up the local sockets (listen only)
-*/
-static bool setup_myself(void) {
- char *name, *hostname, *cipher, *digest, *type;
- char *address = NULL;
- bool port_specified = false;
+int setup_udp_listen_socket(meshlink_handle_t *mesh, const struct addrinfo *aip) {
+ int nfd = socket(aip->ai_family, SOCK_DGRAM, IPPROTO_UDP);
- if(!(name = get_name())) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
- return false;
+ if(nfd == -1) {
+ return -1;
}
- myself = new_node();
- myself->connection = new_connection();
- myself->name = name;
- myself->connection->name = xstrdup(name);
- read_host_config(config_tree, name);
-
- if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
- myport = xstrdup("655");
- else
- port_specified = true;
-
- myself->connection->options = 0;
- myself->connection->protocol_major = PROT_MAJOR;
- myself->connection->protocol_minor = PROT_MINOR;
+#ifdef FD_CLOEXEC
+ fcntl(nfd, F_SETFD, FD_CLOEXEC);
+#endif
- myself->options |= PROT_MINOR << 24;
+#ifdef O_NONBLOCK
+ int flags = fcntl(nfd, F_GETFL);
- if(!get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental)) {
- experimental = read_ecdsa_private_key();
- logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
- } else {
- if(experimental && !read_ecdsa_private_key())
- return false;
+ if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
+ closesocket(nfd);
+ logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "fcntl", strerror(errno));
+ return -1;
}
- if(!read_rsa_private_key())
- return false;
-
- /* Ensure myport is numeric */
+#elif defined(WIN32)
+ unsigned long arg = 1;
- if(!atoi(myport)) {
- struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
- sockaddr_t sa;
- if(!ai || !ai->ai_addr)
- return false;
- free(myport);
- memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
- sockaddr2str(&sa, NULL, &myport);
+ if(ioctlsocket(nfd, FIONBIO, &arg) != 0) {
+ closesocket(nfd);
+ logger(mesh, MESHLINK_ERROR, "Call to `%s' failed: %s", "ioctlsocket", sockstrerror(sockerrno));
+ return -1;
}
- /* Read in all the subnets specified in the host configuration file */
+#endif
- for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
- subnet_t *subnet;
+ int option = 1;
+ setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof(option));
+ setsockopt(nfd, SOL_SOCKET, SO_BROADCAST, (void *)&option, sizeof(option));
- if(!get_config_subnet(cfg, &subnet))
- return false;
+#if defined(IPV6_V6ONLY)
- subnet_add(myself, subnet);
+ if(aip->ai_family == AF_INET6) {
+ setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option));
}
- /* Check some options */
-
- if(!setup_myself_reloadable())
- return false;
-
- get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
- get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
- strictsubnets |= tunnelserver;
-
- if(get_config_int(lookup_config(config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
- if(max_connection_burst <= 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!");
- return false;
- }
- }
+#endif
- if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
- if(udp_rcvbuf <= 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
- return false;
- }
- }
+#if defined(IP_DONTFRAG) && !defined(IP_DONTFRAGMENT)
+#define IP_DONTFRAGMENT IP_DONTFRAG
+#endif
- if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
- if(udp_sndbuf <= 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
- return false;
- }
- }
+#if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
+ option = IP_PMTUDISC_DO;
+ setsockopt(nfd, IPPROTO_IP, IP_MTU_DISCOVER, (void *)&option, sizeof(option));
+#elif defined(IP_DONTFRAGMENT)
+ option = 1;
+ setsockopt(nfd, IPPROTO_IP, IP_DONTFRAGMENT, (void *)&option, sizeof(option));
+#endif
- int replaywin_int;
- if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
- if(replaywin_int < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
- return false;
- }
- replaywin = (unsigned)replaywin_int;
- sptps_replaywin = replaywin;
+ if(aip->ai_family == AF_INET6) {
+#if defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
+ option = IPV6_PMTUDISC_DO;
+ setsockopt(nfd, IPPROTO_IPV6, IPV6_MTU_DISCOVER, (void *)&option, sizeof(option));
+#elif defined(IPV6_DONTFRAG)
+ option = 1;
+ setsockopt(nfd, IPPROTO_IPV6, IPV6_DONTFRAG, (void *)&option, sizeof(option));
+#endif
}
- /* Generate packet encryption key */
-
- if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
- cipher = xstrdup("blowfish");
-
- if(!strcasecmp(cipher, "none")) {
- myself->incipher = NULL;
- } else if(!(myself->incipher = cipher_open_by_name(cipher))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
- return false;
+ if(bind(nfd, aip->ai_addr, aip->ai_addrlen)) {
+ closesocket(nfd);
+ return -1;
}
- free(cipher);
+ return nfd;
+}
- timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
+/*
+ Add listening sockets.
+*/
+static bool add_listen_sockets(meshlink_handle_t *mesh) {
+ struct addrinfo *ai;
- /* Check if we want to use message authentication codes... */
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ .ai_flags = AI_PASSIVE,
+ };
- int maclength = 4;
- get_config_int(lookup_config(config_tree, "MACLength"), &maclength);
+ int err = getaddrinfo(NULL, mesh->myport, &hint, &ai);
- if(maclength < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!");
+ if(err || !ai) {
+ logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
return false;
}
- if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
- digest = xstrdup("sha1");
+ bool success = false;
- if(!strcasecmp(digest, "none")) {
- myself->indigest = NULL;
- } else if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
- return false;
- }
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ // Ignore duplicate addresses
+ bool found = false;
- free(digest);
+ 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;
+ }
+ }
- /* Compression */
+ if(found) {
+ continue;
+ }
- if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
- if(myself->incompression < 0 || myself->incompression > 11) {
- logger(DEBUG_ALWAYS, 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;
-
- /* Done */
-
- myself->nexthop = myself;
- myself->via = myself;
- myself->status.reachable = true;
- myself->last_state_change = now.tv_sec;
- myself->status.sptps = experimental;
- node_add(myself);
-
- graph();
-
- if(strictsubnets)
- load_all_subnets();
- else if(autoconnect)
- load_all_nodes();
-
- /* Open device */
-
- devops = os_devops;
-
- if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
- if(!strcasecmp(type, "dummy"))
- devops = dummy_devops;
- else if(!strcasecmp(type, "raw_socket"))
- devops = raw_socket_devops;
- else if(!strcasecmp(type, "multicast"))
- devops = multicast_devops;
-#ifdef ENABLE_UML
- else if(!strcasecmp(type, "uml"))
- devops = uml_devops;
-#endif
-#ifdef ENABLE_VDE
- else if(!strcasecmp(type, "vde"))
- devops = vde_devops;
-#endif
- }
- if(!devops.setup())
- return false;
+ /* Try to bind to TCP */
- if(device_fd >= 0)
- io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
+ int tcp_fd = setup_tcp_listen_socket(mesh, aip);
- /* Open sockets */
+ if(tcp_fd == -1) {
+ if(errno == EADDRINUSE) {
+ /* If this port is in use for any address family, avoid it. */
+ success = false;
+ break;
+ } else {
+ continue;
+ }
+ }
- if(!do_detach && getenv("LISTEN_FDS")) {
- sockaddr_t sa;
- socklen_t salen;
+ /* If TCP worked, then we require that UDP works as well. */
- listen_sockets = atoi(getenv("LISTEN_FDS"));
-#ifdef HAVE_UNSETENV
- unsetenv("LISTEN_FDS");
-#endif
+ int udp_fd = setup_udp_listen_socket(mesh, aip);
- if(listen_sockets > MAXSOCKETS) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
- return false;
+ if(udp_fd == -1) {
+ closesocket(tcp_fd);
+ success = false;
+ break;
}
- for(int i = 0; i < listen_sockets; i++) {
- salen = sizeof sa;
- if(getsockname(i + 3, &sa.sa, &salen) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno));
- return false;
- }
-
-#ifdef FD_CLOEXEC
- fcntl(i + 3, F_SETFD, FD_CLOEXEC);
-#endif
-
- int udp_fd = setup_vpn_in_socket(&sa);
- if(udp_fd < 0)
- return false;
+ 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);
- io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], i + 3, IO_READ);
- io_add(&listen_socket[i].udp, (io_cb_t)handle_incoming_vpn_data, &listen_socket[i], udp_fd, IO_READ);
+ if(mesh->log_level <= MESHLINK_INFO) {
+ char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
+ logger(mesh, MESHLINK_INFO, "Listening on %s", hostname);
+ free(hostname);
+ }
- if(debug_level >= DEBUG_CONNECTIONS) {
- hostname = sockaddr2hostname(&sa);
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
- free(hostname);
- }
+ 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);
- memcpy(&listen_socket[i].sa, &sa, salen);
+ 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;
}
- } else {
- listen_sockets = 0;
- config_t *cfg = lookup_config(config_tree, "BindToAddress");
- do {
- get_config_string(cfg, &address);
- if(cfg)
- cfg = lookup_config_next(config_tree, cfg);
+ mesh->listen_sockets++;
+ success = true;
+ }
- char *port = myport;
+ freeaddrinfo(ai);
- if(address) {
- char *space = strchr(address, ' ');
- if(space) {
- *space++ = 0;
- port = space;
- }
+ if(!success) {
+ 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);
+ }
- if(!strcmp(address, "*"))
- *address = 0;
- }
+ mesh->listen_sockets = 0;
+ }
- struct addrinfo *ai, hint = {0};
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
+ return success;
+}
- int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
- free(address);
+/*
+ Configure node_t mesh->self and set up the local sockets (listen only)
+*/
+bool setup_myself(meshlink_handle_t *mesh) {
+ /* Set some defaults */
- if(err || !ai) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
- return false;
- }
+ mesh->maxtimeout = 900;
- for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
- if(listen_sockets >= MAXSOCKETS) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
- return false;
- }
+ /* Done */
- int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
+ mesh->self->nexthop = mesh->self;
- if(tcp_fd < 0)
- continue;
+ node_add(mesh, mesh->self);
- int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+ if(!config_scan_all(mesh, "current", "hosts", load_node, NULL)) {
+ logger(mesh, MESHLINK_WARNING, "Could not scan all host config files");
+ }
- if(tcp_fd < 0) {
- close(tcp_fd);
- continue;
- }
+ /* Open sockets */
- io_add(&listen_socket[listen_sockets].tcp, handle_new_meta_connection, &listen_socket[listen_sockets], tcp_fd, IO_READ);
- io_add(&listen_socket[listen_sockets].udp, handle_incoming_vpn_data, &listen_socket[listen_sockets], udp_fd, IO_READ);
+ mesh->listen_sockets = 0;
- if(debug_level >= DEBUG_CONNECTIONS) {
- hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
- free(hostname);
- }
+ if(!add_listen_sockets(mesh)) {
+ if(strcmp(mesh->myport, "0")) {
+ logger(mesh, MESHLINK_WARNING, "Could not bind to port %s, trying to find an alternative port", mesh->myport);
- memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
- listen_sockets++;
+ if(!check_port(mesh)) {
+ logger(mesh, MESHLINK_WARNING, "Could not bind to any port, trying to bind to port 0");
+ free(mesh->myport);
+ mesh->myport = xstrdup("0");
}
- freeaddrinfo(ai);
- } while(cfg);
+ if(!add_listen_sockets(mesh)) {
+ return false;
+ }
+ } else {
+ return false;
+ }
}
- if(!listen_sockets) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
+ if(!mesh->listen_sockets) {
+ logger(mesh, MESHLINK_ERROR, "Unable to create any listening socket!");
return false;
}
- /* If no Port option was specified, set myport to the port used by the first listening socket. */
-
- if(!port_specified) {
- sockaddr_t sa;
- socklen_t salen = sizeof sa;
- if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
- free(myport);
- sockaddr2str(&sa, NULL, &myport);
- if(!myport)
- myport = xstrdup("655");
- }
- }
-
- xasprintf(&myself->hostname, "MYSELF port %s", myport);
- myself->connection->hostname = xstrdup(myself->hostname);
-
/* Done. */
- last_config_check = now.tv_sec;
+ 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) {
- 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())
- return false;
-
- if(!init_control())
+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;
-
- /* Run tinc-up script to further initialize the tap interface */
-
- char *envp[5] = {NULL};
- 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);
-
- execute_script("tinc-up", envp);
-
- for(int i = 0; i < 4; i++)
- free(envp[i]);
-
- /* Run subnet-up scripts for our own subnets */
-
- subnet_update(myself, NULL, true);
+ }
return true;
}
/*
close all open network connections
*/
-void close_network_connections(void) {
- for(list_node_t *node = connection_list->head, *next; node; node = next) {
- next = node->next;
- connection_t *c = node->data;
- /* Keep control connections open until the end, so they know when we really terminated */
- if(c->status.control)
- c->socket = -1;
- c->outgoing = NULL;
- terminate_connection(c, false);
- }
-
- 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(int i = 0; i < listen_sockets; i++) {
- io_del(&listen_socket[i].tcp);
- io_del(&listen_socket[i].udp);
- close(listen_socket[i].tcp.fd);
- close(listen_socket[i].udp.fd);
+ 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);
}
- char *envp[5] = {NULL};
- 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);
-
- exit_requests();
- exit_edges();
- exit_subnets();
- exit_nodes();
- exit_connections();
-
- execute_script("tinc-down", envp);
-
- if(myport) free(myport);
-
- for(int i = 0; i < 4; i++)
- free(envp[i]);
+ exit_requests(mesh);
+ exit_edges(mesh);
+ exit_nodes(mesh);
+ exit_submeshes(mesh);
+ exit_connections(mesh);
- devops.close();
+ free(mesh->myport);
+ mesh->myport = NULL;
- exit_control();
+ mesh->self = NULL;
return;
}
projects / meshlink / blobdiff