/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2015 Guus Sliepen <guus@tinc-vpn.org>
2006 Scott Lamb <slamb@slamb.org>
2010 Brandon Black <blblack@gmail.com>
#include "system.h"
-#include "splay_tree.h"
#include "cipher.h"
#include "conf.h"
#include "connection.h"
#include "ecdsa.h"
#include "graph.h"
#include "logger.h"
+#include "names.h"
#include "net.h"
#include "netutl.h"
#include "process.h"
#include "protocol.h"
#include "route.h"
#include "rsa.h"
+#include "script.h"
#include "subnet.h"
#include "utils.h"
#include "xalloc.h"
char *myport;
-static struct event device_ev;
+static char *myname;
+static io_t device_io;
devops_t devops;
+bool device_standby = false;
char *proxyhost;
char *proxyport;
char *proxyuser;
char *proxypass;
proxytype_t proxytype;
+bool autoconnect;
+bool disablebuggypeers;
+
+char *scriptinterpreter;
+char *scriptextension;
bool node_read_ecdsa_public_key(node_t *n) {
- if(ecdsa_active(&n->ecdsa))
+ if(ecdsa_active(n->ecdsa))
return true;
splay_tree_t *config_tree;
FILE *fp;
- char *fname;
+ char *pubname = NULL;
char *p;
- bool result = false;
-
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
init_configuration(&config_tree);
- if(!read_config_file(config_tree, fname))
+ if(!read_host_config(config_tree, n->name))
goto exit;
- /* First, check for simple ECDSAPublicKey statement */
+ /* First, check for simple Ed25519PublicKey statement */
- if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
- result = ecdsa_set_base64_public_key(&n->ecdsa, p);
+ if(get_config_string(lookup_config(config_tree, "Ed25519PublicKey"), &p)) {
+ n->ecdsa = ecdsa_set_base64_public_key(p);
free(p);
goto exit;
}
- /* Else, check for ECDSAPublicKeyFile statement and read it */
-
- free(fname);
+ /* Else, check for Ed25519PublicKeyFile statement and read it */
- if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &fname))
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
+ if(!get_config_string(lookup_config(config_tree, "Ed25519PublicKeyFile"), &pubname))
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
- fp = fopen(fname, "r");
+ fp = fopen(pubname, "r");
- if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", fname, strerror(errno));
+ if(!fp)
goto exit;
- }
- result = ecdsa_read_pem_public_key(&n->ecdsa, fp);
+ n->ecdsa = ecdsa_read_pem_public_key(fp);
fclose(fp);
exit:
exit_configuration(&config_tree);
- free(fname);
- return result;
+ free(pubname);
+ return n->ecdsa;
}
bool read_ecdsa_public_key(connection_t *c) {
+ if(ecdsa_active(c->ecdsa))
+ return true;
+
FILE *fp;
char *fname;
char *p;
- bool result;
- /* First, check for simple ECDSAPublicKey statement */
+ if(!c->config_tree) {
+ init_configuration(&c->config_tree);
+ if(!read_host_config(c->config_tree, c->name))
+ return false;
+ }
+
+ /* First, check for simple Ed25519PublicKey statement */
- if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
- result = ecdsa_set_base64_public_key(&c->ecdsa, p);
+ if(get_config_string(lookup_config(c->config_tree, "Ed25519PublicKey"), &p)) {
+ c->ecdsa = ecdsa_set_base64_public_key(p);
free(p);
- return result;
+ return c->ecdsa;
}
- /* Else, check for ECDSAPublicKeyFile statement and read it */
+ /* Else, check for Ed25519PublicKeyFile statement and read it */
- if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
+ if(!get_config_string(lookup_config(c->config_tree, "Ed25519PublicKeyFile"), &fname))
xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
fp = fopen(fname, "r");
if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s",
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading Ed25519 public key file `%s': %s",
fname, strerror(errno));
free(fname);
return false;
}
- result = ecdsa_read_pem_public_key(&c->ecdsa, fp);
- fclose(fp);
+ c->ecdsa = ecdsa_read_pem_public_key(fp);
+
+ if(!c->ecdsa && errno != ENOENT)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Parsing Ed25519 public key file `%s' failed.", fname);
- if(!result)
- logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
+ fclose(fp);
free(fname);
- return result;
+ return c->ecdsa;
}
+#ifndef DISABLE_LEGACY
bool read_rsa_public_key(connection_t *c) {
FILE *fp;
char *fname;
char *n;
- bool result;
/* First, check for simple PublicKey statement */
if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
- result = rsa_set_hex_public_key(&c->rsa, n, "FFFF");
+ c->rsa = rsa_set_hex_public_key(n, "FFFF");
free(n);
- return result;
+ return c->rsa;
}
/* Else, check for PublicKeyFile statement and read it */
return false;
}
- result = rsa_read_pem_public_key(&c->rsa, fp);
+ c->rsa = rsa_read_pem_public_key(fp);
fclose(fp);
- if(!result)
+ if(!c->rsa)
logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
free(fname);
- return result;
+ return c->rsa;
}
+#endif
static bool read_ecdsa_private_key(void) {
FILE *fp;
char *fname;
- bool result;
/* 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);
+ if(!get_config_string(lookup_config(config_tree, "Ed25519PrivateKeyFile"), &fname))
+ xasprintf(&fname, "%s" SLASH "ed25519_key.priv", confbase);
fp = fopen(fname, "r");
if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno));
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading Ed25519 private key file `%s': %s", fname, strerror(errno));
+ if(errno == ENOENT)
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an Ed25519 keypair with `tinc -n %s generate-ed25519-keys'.", netname ?: ".");
free(fname);
return false;
}
struct stat s;
if(fstat(fileno(fp), &s)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno));
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat Ed25519 private key file `%s': %s'", fname, strerror(errno));
free(fname);
return false;
}
if(s.st_mode & ~0100700)
- logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for Ed25519 private key file `%s'!", fname);
#endif
- result = ecdsa_read_pem_private_key(&myself->connection->ecdsa, fp);
+ myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
fclose(fp);
- if(!result)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
+ if(!myself->connection->ecdsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
free(fname);
- return result;
+ return myself->connection->ecdsa;
}
+static bool read_invitation_key(void) {
+ FILE *fp;
+ char fname[PATH_MAX];
+
+ if(invitation_key) {
+ ecdsa_free(invitation_key);
+ invitation_key = NULL;
+ }
+
+ snprintf(fname, sizeof fname, "%s" SLASH "invitations" SLASH "ed25519_key.priv", confbase);
+
+ 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 Ed25519 private key file `%s' failed", fname);
+ }
+
+ return invitation_key;
+}
+
+#ifndef DISABLE_LEGACY
static bool read_rsa_private_key(void) {
FILE *fp;
char *fname;
char *n, *d;
- bool result;
/* First, check for simple PrivateKey statement */
free(d);
return false;
}
- result = rsa_set_hex_private_key(&myself->connection->rsa, n, "FFFF", d);
+ myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
free(n);
free(d);
- return result;
+ return myself->connection->rsa;
}
/* Else, check for PrivateKeyFile statement and read it */
if(!fp) {
logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
fname, strerror(errno));
+ if(errno == ENOENT)
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an RSA keypair with `tinc -n %s generate-rsa-keys'.", netname ?: ".");
free(fname);
return false;
}
logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
#endif
- result = rsa_read_pem_private_key(&myself->connection->rsa, fp);
+ myself->connection->rsa = rsa_read_pem_private_key(fp);
fclose(fp);
- if(!result)
+ if(!myself->connection->rsa)
logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
free(fname);
- return result;
+ return myself->connection->rsa;
}
+#endif
-static struct event keyexpire_event;
+static timeout_t keyexpire_timeout;
-static void keyexpire_handler(int fd, short events, void *data) {
+static void keyexpire_handler(void *data) {
regenerate_key();
+ timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
}
void regenerate_key(void) {
- if(timeout_initialized(&keyexpire_event)) {
- logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
- event_del(&keyexpire_event);
- send_key_changed();
- } else {
- timeout_set(&keyexpire_event, keyexpire_handler, NULL);
- }
-
- event_add(&keyexpire_event, &(struct timeval){keylifetime, 0});
+ logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
+ send_key_changed();
+ for splay_each(node_t, n, node_tree)
+ n->status.validkey_in = false;
}
/*
void load_all_subnets(void) {
DIR *dir;
struct dirent *ent;
- char *dname;
- char *fname;
- splay_tree_t *config_tree;
- config_t *cfg;
- subnet_t *s, *s2;
- node_t *n;
+ char dname[PATH_MAX];
- xasprintf(&dname, "%s" SLASH "hosts", confbase);
+ snprintf(dname, sizeof 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(!check_id(ent->d_name))
continue;
- n = lookup_node(ent->d_name);
+ node_t *n = lookup_node(ent->d_name);
#ifdef _DIRENT_HAVE_D_TYPE
//if(ent->d_type != DT_REG)
// continue;
#endif
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, ent->d_name);
+ splay_tree_t *config_tree;
init_configuration(&config_tree);
read_config_options(config_tree, ent->d_name);
- read_config_file(config_tree, fname);
- free(fname);
+ read_host_config(config_tree, ent->d_name);
if(!n) {
n = new_node();
node_add(n);
}
- for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ subnet_t *s, *s2;
+
if(!get_config_subnet(cfg, &s))
continue;
if((s2 = lookup_subnet(n, s))) {
s2->expires = -1;
+ free(s);
} else {
subnet_add(n, s);
}
closedir(dir);
}
+void load_all_nodes(void) {
+ DIR *dir;
+ struct dirent *ent;
+ char dname[PATH_MAX];
+
+ snprintf(dname, sizeof dname, "%s" SLASH "hosts", confbase);
+ dir = opendir(dname);
+ if(!dir) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ return;
+ }
+
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
+
+ node_t *n = lookup_node(ent->d_name);
+ if(n)
+ continue;
+
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(n);
+ }
+
+ closedir(dir);
+}
+
+
char *get_name(void) {
char *name = NULL;
+ char *returned_name;
get_config_string(lookup_config(config_tree, "Name"), &name);
if(!name)
return NULL;
- if(*name == '$') {
- char *envname = getenv(name + 1);
- if(!envname) {
- if(strcmp(name + 1, "HOST")) {
- fprintf(stderr, "Invalid Name: environment variable %s does not exist\n", name + 1);
- return false;
- }
- envname = alloca(32);
- if(gethostname(envname, 32)) {
- fprintf(stderr, "Could not get hostname: %s\n", strerror(errno));
- return false;
- }
- envname[31] = 0;
- }
- free(name);
- name = xstrdup(envname);
- for(char *c = name; *c; c++)
- if(!isalnum(*c))
- *c = '_';
- }
-
- if(!check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
- free(name);
- return false;
- }
-
- return name;
+ returned_name = replace_name(name);
+ free(name);
+ return returned_name;
}
bool setup_myself_reloadable(void) {
char *proxy = NULL;
- char *mode = NULL;
+ char *rmode = NULL;
+ char *fmode = NULL;
+ char *bmode = NULL;
char *afname = 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, ' ')))
if(myself->options & OPTION_TCPONLY)
myself->options |= OPTION_INDIRECT;
+ get_config_bool(lookup_config(config_tree, "UDPDiscovery"), &udp_discovery);
+ get_config_int(lookup_config(config_tree, "UDPDiscoveryKeepaliveInterval"), &udp_discovery_keepalive_interval);
+ get_config_int(lookup_config(config_tree, "UDPDiscoveryInterval"), &udp_discovery_interval);
+ get_config_int(lookup_config(config_tree, "UDPDiscoveryTimeout"), &udp_discovery_timeout);
+
+ get_config_int(lookup_config(config_tree, "MTUInfoInterval"), &mtu_info_interval);
+ get_config_int(lookup_config(config_tree, "UDPInfoInterval"), &udp_info_interval);
+
get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
-
- if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) {
- if(!strcasecmp(mode, "router"))
+
+ if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
+ if(!strcasecmp(rmode, "router"))
routing_mode = RMODE_ROUTER;
- else if(!strcasecmp(mode, "switch"))
+ else if(!strcasecmp(rmode, "switch"))
routing_mode = RMODE_SWITCH;
- else if(!strcasecmp(mode, "hub"))
+ else if(!strcasecmp(rmode, "hub"))
routing_mode = RMODE_HUB;
else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
return false;
}
- free(mode);
+ free(rmode);
}
- if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
- if(!strcasecmp(mode, "off"))
+ if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
+ if(!strcasecmp(fmode, "off"))
forwarding_mode = FMODE_OFF;
- else if(!strcasecmp(mode, "internal"))
+ else if(!strcasecmp(fmode, "internal"))
forwarding_mode = FMODE_INTERNAL;
- else if(!strcasecmp(mode, "kernel"))
+ else if(!strcasecmp(fmode, "kernel"))
forwarding_mode = FMODE_KERNEL;
else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
return false;
}
- free(mode);
+ free(fmode);
}
choice = true;
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"), &mode)) {
- if(!strcasecmp(mode, "no"))
+ if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
+ if(!strcasecmp(bmode, "no"))
broadcast_mode = BMODE_NONE;
- else if(!strcasecmp(mode, "yes") || !strcasecmp(mode, "mst"))
+ else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
broadcast_mode = BMODE_MST;
- else if(!strcasecmp(mode, "direct"))
+ else if(!strcasecmp(bmode, "direct"))
broadcast_mode = BMODE_DIRECT;
else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
return false;
}
- free(mode);
+ free(bmode);
+ }
+
+ const char* const DEFAULT_BROADCAST_SUBNETS[] = { "ff:ff:ff:ff:ff:ff", "255.255.255.255", "224.0.0.0/4", "ff00::/8" };
+ for (size_t i = 0; i < sizeof(DEFAULT_BROADCAST_SUBNETS) / sizeof(*DEFAULT_BROADCAST_SUBNETS); i++) {
+ subnet_t *s = new_subnet();
+ if (!str2net(s, DEFAULT_BROADCAST_SUBNETS[i]))
+ abort();
+ subnet_add(NULL, s);
+ }
+ for (config_t* cfg = lookup_config(config_tree, "BroadcastSubnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ subnet_t *s;
+ if (!get_config_subnet(cfg, &s))
+ continue;
+ subnet_add(NULL, s);
}
#if !defined(SOL_IP) || !defined(IP_TOS)
if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
keylifetime = 3600;
+ config_t *cfg = lookup_config(config_tree, "AutoConnect");
+ if(cfg) {
+ if(!get_config_bool(cfg, &autoconnect)) {
+ // Some backwards compatibility with when this option was an int
+ int val = 0;
+ get_config_int(cfg, &val);
+ autoconnect = val;
+ }
+ }
+
+ get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+
+ read_invitation_key();
+
return true;
}
+/*
+ Add listening sockets.
+*/
+static bool add_listen_address(char *address, bool bindto) {
+ char *port = myport;
+
+ if(address) {
+ char *space = strchr(address, ' ');
+ if(space) {
+ *space++ = 0;
+ port = space;
+ }
+
+ if(!strcmp(address, "*"))
+ *address = 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;
+
+#if HAVE_DECL_RES_INIT
+ res_init();
+#endif
+ int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+ free(address);
+
+ if(err || !ai) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
+ return false;
+ }
+
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ // Ignore duplicate addresses
+ bool found = false;
+
+ for(int i = 0; i < listen_sockets; i++)
+ if(!memcmp(&listen_socket[i].sa, aip->ai_addr, aip->ai_addrlen)) {
+ found = true;
+ break;
+ }
+
+ if(found)
+ continue;
+
+ if(listen_sockets >= MAXSOCKETS) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ return false;
+ }
+
+ int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
+
+ if(tcp_fd < 0)
+ continue;
+
+ int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+
+ if(tcp_fd < 0) {
+ close(tcp_fd);
+ continue;
+ }
+
+ 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);
+
+ if(debug_level >= DEBUG_CONNECTIONS) {
+ char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
+ logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ free(hostname);
+ }
+
+ listen_socket[listen_sockets].bindto = bindto;
+ memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
+ listen_sockets++;
+ }
+
+ freeaddrinfo(ai);
+ return true;
+}
+
+void device_enable(void) {
+ if (devops.enable)
+ devops.enable();
+
+ /* 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", myname);
+
+ execute_script("tinc-up", envp);
+
+ for(int i = 0; i < 4; i++)
+ free(envp[i]);
+}
+
+void device_disable(void) {
+ 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", myname);
+
+ execute_script("tinc-down", envp);
+
+ for(int i = 0; i < 4; i++)
+ free(envp[i]);
+
+ if (devops.disable)
+ devops.disable();
+}
+
/*
Configure node_t myself and set up the local sockets (listen only)
*/
static bool setup_myself(void) {
- config_t *cfg;
- subnet_t *subnet;
char *name, *hostname, *cipher, *digest, *type;
- char *fname = NULL;
char *address = NULL;
- char *envp[5];
- struct addrinfo *ai, *aip, hint = {0};
- int i, err;
- int replaywin_int;
+ bool port_specified = false;
if(!(name = get_name())) {
logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
return false;
}
+ myname = xstrdup(name);
myself = new_node();
myself->connection = new_connection();
myself->name = name;
myself->connection->name = xstrdup(name);
- xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, name);
- read_config_options(config_tree, name);
- read_config_file(config_tree, fname);
- free(fname);
+ read_host_config(config_tree, name);
if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
myport = xstrdup("655");
-
- xasprintf(&myself->hostname, "MYSELF port %s", myport);
- myself->connection->hostname = xstrdup(myself->hostname);
+ else
+ port_specified = true;
myself->connection->options = 0;
myself->connection->protocol_major = PROT_MAJOR;
myself->options |= PROT_MINOR << 24;
- get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
-
- if(experimental && !read_ecdsa_private_key())
+#ifdef DISABLE_LEGACY
+ experimental = read_ecdsa_private_key();
+ if(!experimental) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "No private key available, cannot start tinc!");
return false;
+ }
+#else
+ if(!get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental)) {
+ experimental = read_ecdsa_private_key();
+ if(!experimental)
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
+ } else {
+ if(experimental && !read_ecdsa_private_key())
+ return false;
+ }
- if(!read_rsa_private_key())
- return false;
+ if(!read_rsa_private_key()) {
+ if(experimental) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Support for legacy protocol disabled.");
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "No private keys available, cannot start tinc!");
+ return false;
+ }
+ }
+#endif
+
+ /* Ensure myport is numeric */
if(!atoi(myport)) {
struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
/* Read in all the subnets specified in the host configuration file */
- cfg = lookup_config(config_tree, "Subnet");
+ for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ subnet_t *subnet;
- while(cfg) {
if(!get_config_subnet(cfg, &subnet))
return false;
subnet_add(myself, subnet);
-
- cfg = lookup_config_next(config_tree, cfg);
}
/* Check some options */
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;
+ }
+ }
if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
- if(udp_rcvbuf <= 0) {
+ if(udp_rcvbuf < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
return false;
}
}
if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
- if(udp_sndbuf <= 0) {
+ if(udp_sndbuf < 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
return false;
}
}
+ 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;
}
+#ifndef DISABLE_LEGACY
/* Generate packet encryption key */
if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
cipher = xstrdup("blowfish");
- if(!cipher_open_by_name(&myself->incipher, cipher)) {
+ 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;
}
- regenerate_key();
+ free(cipher);
+
+ timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
/* Check if we want to use message authentication codes... */
if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
digest = xstrdup("sha1");
- if(!digest_open_by_name(&myself->indigest, digest, maclength)) {
+ 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;
}
+ free(digest);
+#endif
+
/* Compression */
if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
myself->nexthop = myself;
myself->via = myself;
myself->status.reachable = true;
- myself->last_state_change = time(NULL);
+ myself->last_state_change = now.tv_sec;
myself->status.sptps = experimental;
node_add(myself);
if(strictsubnets)
load_all_subnets();
+ else if(autoconnect)
+ load_all_nodes();
/* Open device */
else if(!strcasecmp(type, "vde"))
devops = vde_devops;
#endif
+ free(type);
}
+ get_config_bool(lookup_config(config_tree, "DeviceStandby"), &device_standby);
+
if(!devops.setup())
return false;
- if(device_fd >= 0) {
- event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
-
- if (event_add(&device_ev, NULL) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
- devops.close();
- return false;
- }
- }
-
- /* Run tinc-up script to further initialize the tap interface */
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
- envp[4] = NULL;
-
- execute_script("tinc-up", envp);
-
- for(i = 0; i < 4; i++)
- free(envp[i]);
-
- /* Run subnet-up scripts for our own subnets */
-
- subnet_update(myself, NULL, true);
+ if(device_fd >= 0)
+ io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
/* Open sockets */
return false;
}
- for(i = 0; i < listen_sockets; i++) {
+ 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));
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(sockerrno));
return false;
}
- listen_socket[i].tcp = i + 3;
-
#ifdef FD_CLOEXEC
- fcntl(i + 3, F_SETFD, FD_CLOEXEC);
+ fcntl(i + 3, F_SETFD, FD_CLOEXEC);
#endif
- listen_socket[i].udp = setup_vpn_in_socket(&sa);
- if(listen_socket[i].udp < 0)
+ int udp_fd = setup_vpn_in_socket(&sa);
+ if(udp_fd < 0)
return false;
- event_set(&listen_socket[i].ev_tcp, listen_socket[i].tcp, EV_READ|EV_PERSIST, handle_new_meta_connection, NULL);
- if(event_add(&listen_socket[i].ev_tcp, NULL) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
- abort();
- }
-
- event_set(&listen_socket[i].ev_udp, listen_socket[i].udp, EV_READ|EV_PERSIST, handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets);
- if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
- abort();
- }
+ 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(debug_level >= DEBUG_CONNECTIONS) {
hostname = sockaddr2hostname(&sa);
}
} else {
listen_sockets = 0;
- cfg = lookup_config(config_tree, "BindToAddress");
+ int cfgs = 0;
- do {
+ for(config_t *cfg = lookup_config(config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ cfgs++;
get_config_string(cfg, &address);
- if(cfg)
- cfg = lookup_config_next(config_tree, cfg);
-
- char *port = myport;
-
- if(address) {
- char *space = strchr(address, ' ');
- if(space) {
- *space++ = 0;
- port = space;
- }
-
- if(!strcmp(address, "*"))
- *address = 0;
- }
-
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
-
- err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
- free(address);
-
- if(err || !ai) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
- gai_strerror(err));
+ if(!add_listen_address(address, true))
return false;
- }
-
- for(aip = ai; aip; aip = aip->ai_next) {
- if(listen_sockets >= MAXSOCKETS) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
- return false;
- }
-
- listen_socket[listen_sockets].tcp =
- setup_listen_socket((sockaddr_t *) aip->ai_addr);
-
- if(listen_socket[listen_sockets].tcp < 0)
- continue;
-
- listen_socket[listen_sockets].udp =
- setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
-
- if(listen_socket[listen_sockets].udp < 0) {
- close(listen_socket[listen_sockets].tcp);
- continue;
- }
-
- event_set(&listen_socket[listen_sockets].ev_tcp,
- listen_socket[listen_sockets].tcp,
- EV_READ|EV_PERSIST,
- handle_new_meta_connection, NULL);
- if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
- abort();
- }
-
- event_set(&listen_socket[listen_sockets].ev_udp,
- listen_socket[listen_sockets].udp,
- EV_READ|EV_PERSIST,
- handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets);
- if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
- abort();
- }
-
- if(debug_level >= DEBUG_CONNECTIONS) {
- hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
- free(hostname);
- }
+ }
- memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
- listen_sockets++;
- }
+ for(config_t *cfg = lookup_config(config_tree, "ListenAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ cfgs++;
+ get_config_string(cfg, &address);
+ if(!add_listen_address(address, false))
+ return false;
+ }
- freeaddrinfo(ai);
- } while(cfg);
+ if(!cfgs)
+ if(!add_listen_address(address, NULL))
+ return false;
}
- if(listen_sockets)
- logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
- else {
+ if(!listen_sockets) {
logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
return false;
}
- last_config_check = time(NULL);
+ /* If no Port option was specified, set myport to the port used by the first listening socket. */
+
+ if(!port_specified || atoi(myport) == 0) {
+ 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;
return true;
}
if(!setup_myself())
return false;
+ if(!init_control())
+ return false;
+
+ if (!device_standby)
+ device_enable();
+
+ /* 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) {
- splay_node_t *node, *next;
- connection_t *c;
- char *envp[5];
- int i;
-
- for(node = connection_tree->head; node; node = next) {
+ for(list_node_t *node = connection_list->head, *next; node; node = next) {
next = node->next;
- c = node->data;
+ 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(outgoing_list)
+ list_delete_list(outgoing_list);
if(myself && myself->connection) {
subnet_update(myself, NULL, false);
free_connection(myself->connection);
}
- 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);
+ 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);
}
- 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();
- execute_script("tinc-down", envp);
+ if (!device_standby)
+ device_disable();
- if(myport) free(myport);
+ free(myport);
- for(i = 0; i < 4; i++)
- free(envp[i]);
+ if (device_fd >= 0)
+ io_del(&device_io);
+ if (devops.close)
+ devops.close();
+
+ exit_control();
- devops.close();
+ free(myname);
+ free(scriptextension);
+ free(scriptinterpreter);
return;
}
projects / tinc / blobdiff