/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2014 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2017 Guus Sliepen <guus@tinc-vpn.org>
2006 Scott Lamb <slamb@slamb.org>
2010 Brandon Black <blblack@gmail.com>
#include "utils.h"
#include "xalloc.h"
+#ifdef HAVE_MINIUPNPC
+#include "upnp.h"
+#endif
+
char *myport;
-static char *myname;
static io_t device_io;
devops_t devops;
bool device_standby = false;
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 *p;
init_configuration(&config_tree);
- if(!read_host_config(config_tree, n->name))
+
+ if(!read_host_config(config_tree, n->name, true)) {
goto exit;
+ }
/* First, check for simple Ed25519PublicKey statement */
/* Else, check for Ed25519PublicKeyFile statement and read it */
- if(!get_config_string(lookup_config(config_tree, "Ed25519PublicKeyFile"), &pubname))
+ if(!get_config_string(lookup_config(config_tree, "Ed25519PublicKeyFile"), &pubname)) {
xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
+ }
fp = fopen(pubname, "r");
- if(!fp)
+ if(!fp) {
goto exit;
+ }
n->ecdsa = ecdsa_read_pem_public_key(fp);
fclose(fp);
}
bool read_ecdsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
+ if(ecdsa_active(c->ecdsa)) {
return true;
+ }
FILE *fp;
char *fname;
if(!c->config_tree) {
init_configuration(&c->config_tree);
- if(!read_host_config(c->config_tree, c->name))
+
+ if(!read_host_config(c->config_tree, c->name, true)) {
return false;
+ }
}
/* First, check for simple Ed25519PublicKey statement */
/* Else, check for Ed25519PublicKeyFile statement and read it */
- if(!get_config_string(lookup_config(c->config_tree, "Ed25519PublicKeyFile"), &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 Ed25519 public key file `%s': %s",
- fname, strerror(errno));
+ fname, strerror(errno));
free(fname);
return false;
}
c->ecdsa = ecdsa_read_pem_public_key(fp);
- if(!c->ecdsa && errno != ENOENT)
+ if(!c->ecdsa && errno != ENOENT) {
logger(DEBUG_ALWAYS, LOG_ERR, "Parsing Ed25519 public key file `%s' failed.", fname);
+ }
fclose(fp);
free(fname);
#ifndef DISABLE_LEGACY
bool read_rsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
- return true;
-
FILE *fp;
char *fname;
char *n;
/* Else, check for PublicKeyFile statement and read it */
- if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
+ if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
+ }
fp = fopen(fname, "r");
c->rsa = rsa_read_pem_public_key(fp);
fclose(fp);
- if(!c->rsa)
+ if(!c->rsa) {
logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
+ }
+
free(fname);
return c->rsa;
}
/* Check for PrivateKeyFile statement and read it */
- if(!get_config_string(lookup_config(config_tree, "Ed25519PrivateKeyFile"), &fname))
+ 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 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 ?: ".");
+
+ if(errno == ENOENT) {
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an Ed25519 keypair with `tinc -n %s generate-ed25519-keys'.", netname ? : ".");
+ }
+
free(fname);
return false;
}
return false;
}
- if(s.st_mode & ~0100700)
+ if(s.st_mode & ~0100700) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for Ed25519 private key file `%s'!", fname);
+ }
+
#endif
myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
fclose(fp);
- if(!myself->connection->ecdsa)
+ if(!myself->connection->ecdsa) {
logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
+ }
+
free(fname);
return myself->connection->ecdsa;
}
static bool read_invitation_key(void) {
FILE *fp;
- char *fname;
+ char fname[PATH_MAX];
if(invitation_key) {
ecdsa_free(invitation_key);
invitation_key = NULL;
}
- xasprintf(&fname, "%s" SLASH "invitations" SLASH "ed25519_key.priv", confbase);
+ 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)
+
+ if(!invitation_key) {
logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
+ }
}
- free(fname);
return invitation_key;
}
free(d);
return false;
}
+
myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
free(n);
free(d);
/* Else, check for PrivateKeyFile statement and read it */
- if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
+ if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname)) {
xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
+ }
fp = fopen(fname, "r");
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 ?: ".");
+ 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;
}
return false;
}
- if(s.st_mode & ~0100700)
+ if(s.st_mode & ~0100700) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
+ }
+
#endif
myself->connection->rsa = rsa_read_pem_private_key(fp);
fclose(fp);
- if(!myself->connection->rsa)
+ 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;
}
static void keyexpire_handler(void *data) {
regenerate_key();
- timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
+ timeout_set(data, &(struct timeval) {
+ keylifetime, rand() % 100000
+ });
}
void regenerate_key(void) {
logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
send_key_changed();
- for splay_each(node_t, n, node_tree)
+
+ for splay_each(node_t, n, node_tree) {
n->status.validkey_in = false;
+ }
}
-/*
- Read Subnets from all host config files
-*/
-void load_all_subnets(void) {
+void load_all_nodes(void) {
DIR *dir;
struct dirent *ent;
- char *dname;
+ 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;
}
while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
+ 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);
+ read_host_config(config_tree, ent->d_name, true);
if(!n) {
n = new_node();
node_add(n);
}
- for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
- subnet_t *s, *s2;
+ if(strictsubnets) {
+ 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(!get_config_subnet(cfg, &s)) {
+ continue;
+ }
- if((s2 = lookup_subnet(n, s))) {
- s2->expires = -1;
- } else {
- subnet_add(n, s);
+ if((s2 = lookup_subnet(n, s))) {
+ s2->expires = -1;
+ free(s);
+ } else {
+ subnet_add(n, s);
+ }
}
}
- exit_configuration(&config_tree);
- }
-
- closedir(dir);
-}
-
-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;
- }
-
- while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
- continue;
-
- node_t *n = lookup_node(ent->d_name);
- if(n)
- continue;
+ if(lookup_config(config_tree, "Address")) {
+ n->status.has_address = true;
+ }
- n = new_node();
- n->name = xstrdup(ent->d_name);
- node_add(n);
+ exit_configuration(&config_tree);
}
closedir(dir);
}
-
char *get_name(void) {
char *name = NULL;
char *returned_name;
get_config_string(lookup_config(config_tree, "Name"), &name);
- if(!name)
+ if(!name) {
return NULL;
+ }
returned_name = replace_name(name);
free(name);
free(scriptextension);
- if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &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((space = strchr(proxy, ' '))) {
*space++ = 0;
+ }
if(!strcasecmp(proxy, "none")) {
proxytype = PROXY_NONE;
}
switch(proxytype) {
- case PROXY_NONE:
- default:
- break;
+ case PROXY_NONE:
+ default:
+ break;
- case PROXY_EXEC:
- if(!space || !*space) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
- return false;
- }
- proxyhost = xstrdup(space);
- break;
+ case PROXY_EXEC:
+ if(!space || !*space) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
+ return false;
+ }
- 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;
+ proxyhost = xstrdup(space);
+ break;
+
+ 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;
}
free(proxy);
}
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
+ if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice) {
myself->options |= OPTION_INDIRECT;
+ }
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
+ if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice) {
myself->options |= OPTION_TCPONLY;
+ }
- if(myself->options & OPTION_TCPONLY)
+ 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"), &rmode)) {
- if(!strcasecmp(rmode, "router"))
+ if(!strcasecmp(rmode, "router")) {
routing_mode = RMODE_ROUTER;
- else if(!strcasecmp(rmode, "switch"))
+ } else if(!strcasecmp(rmode, "switch")) {
routing_mode = RMODE_SWITCH;
- else if(!strcasecmp(rmode, "hub"))
+ } else if(!strcasecmp(rmode, "hub")) {
routing_mode = RMODE_HUB;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
return false;
}
+
free(rmode);
}
if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
- if(!strcasecmp(fmode, "off"))
+ if(!strcasecmp(fmode, "off")) {
forwarding_mode = FMODE_OFF;
- else if(!strcasecmp(fmode, "internal"))
+ } else if(!strcasecmp(fmode, "internal")) {
forwarding_mode = FMODE_INTERNAL;
- else if(!strcasecmp(fmode, "kernel"))
+ } else if(!strcasecmp(fmode, "kernel")) {
forwarding_mode = FMODE_KERNEL;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
return false;
}
+
free(fmode);
}
- choice = true;
+ choice = !(myself->options & OPTION_TCPONLY);
get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
- if(choice)
+
+ if(choice) {
myself->options |= OPTION_PMTU_DISCOVERY;
+ }
choice = true;
get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
- if(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"))
+ if(!strcasecmp(bmode, "no")) {
broadcast_mode = BMODE_NONE;
- else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
+ } else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst")) {
broadcast_mode = BMODE_MST;
- else if(!strcasecmp(bmode, "direct"))
+ } else if(!strcasecmp(bmode, "direct")) {
broadcast_mode = BMODE_DIRECT;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
return false;
}
+
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++) {
+ 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]))
+
+ 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)) {
+
+ 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))
+
+ if(!get_config_subnet(cfg, &s)) {
continue;
+ }
+
subnet_add(NULL, s);
}
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
+#if !defined(IP_TOS)
+
+ if(priorityinheritance) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform for IPv4 connections", "PriorityInheritance");
+ }
+
#endif
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
+#if !defined(IPV6_TCLASS)
+
+ if(priorityinheritance) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform for IPv6 connections", "PriorityInheritance");
+ }
+
+#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
+ } else {
maxtimeout = 900;
+ }
if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
- if(!strcasecmp(afname, "IPv4"))
+ if(!strcasecmp(afname, "IPv4")) {
addressfamily = AF_INET;
- else if(!strcasecmp(afname, "IPv6"))
+ } else if(!strcasecmp(afname, "IPv6")) {
addressfamily = AF_INET6;
- else if(!strcasecmp(afname, "any"))
+ } else if(!strcasecmp(afname, "any")) {
addressfamily = AF_UNSPEC;
- else {
+ } else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
return false;
}
+
free(afname);
}
get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
+ 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
get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+ if(!get_config_int(lookup_config(config_tree, "InvitationExpire"), &invitation_lifetime)) {
+ invitation_lifetime = 604800; // 1 week
+ }
+
read_invitation_key();
return true;
if(address) {
char *space = strchr(address, ' ');
+
if(space) {
*space++ = 0;
port = space;
}
- if(!strcmp(address, "*"))
+ 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;
-#ifdef HAVE_DECL_RES_INIT
+#if HAVE_DECL_RES_INIT
res_init();
+
#endif
int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+
free(address);
if(err || !ai) {
break;
}
- if(found)
+ if(found) {
continue;
+ }
if(listen_sockets >= MAXSOCKETS) {
logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
- if(tcp_fd < 0)
+ if(tcp_fd < 0) {
continue;
+ }
int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
- if(tcp_fd < 0) {
+ if(udp_fd < 0) {
close(tcp_fd);
continue;
}
}
void device_enable(void) {
- if (devops.enable)
+ 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]);
+ environment_t env;
+ environment_init(&env);
+ execute_script("tinc-up", &env);
+ environment_exit(&env);
}
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]);
+ environment_t env;
+ environment_init(&env);
+ execute_script("tinc-down", &env);
+ environment_exit(&env);
- if (devops.disable)
+ if(devops.disable) {
devops.disable();
+ }
}
/*
myself->connection = new_connection();
myself->name = name;
myself->connection->name = xstrdup(name);
- read_host_config(config_tree, name);
+ read_host_config(config_tree, name, true);
- if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
+ if(!get_config_string(lookup_config(config_tree, "Port"), &myport)) {
myport = xstrdup("655");
- else
+ } else {
port_specified = true;
+ }
myself->connection->options = 0;
myself->connection->protocol_major = PROT_MAJOR;
#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)
+
+ if(!experimental) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
+ }
} else {
- if(experimental && !read_ecdsa_private_key())
+ if(experimental && !read_ecdsa_private_key()) {
return false;
+ }
}
if(!read_rsa_private_key()) {
return false;
}
}
+
#endif
/* Ensure myport is numeric */
if(!atoi(myport)) {
struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
sockaddr_t sa;
- if(!ai || !ai->ai_addr)
+
+ if(!ai || !ai->ai_addr) {
return false;
+ }
+
free(myport);
memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
+ freeaddrinfo(ai);
sockaddr2str(&sa, NULL, &myport);
}
for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
subnet_t *subnet;
- if(!get_config_subnet(cfg, &subnet))
+ if(!get_config_subnet(cfg, &subnet)) {
return false;
+ }
subnet_add(myself, subnet);
}
/* Check some options */
- if(!setup_myself_reloadable())
+ if(!setup_myself_reloadable()) {
return false;
+ }
get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
}
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(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher)) {
+ cipher = xstrdup("aes-256-cbc");
+ }
if(!strcasecmp(cipher, "none")) {
myself->incipher = NULL;
free(cipher);
- timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
+ timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval) {
+ keylifetime, rand() % 100000
+ });
/* Check if we want to use message authentication codes... */
return false;
}
- if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
- digest = xstrdup("sha1");
+ if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) {
+ digest = xstrdup("sha256");
+ }
if(!strcasecmp(digest, "none")) {
myself->indigest = NULL;
logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
return false;
}
- } else
+ } else {
myself->incompression = 0;
+ }
myself->connection->outcompression = 0;
graph();
- if(strictsubnets)
- load_all_subnets();
- else if(autoconnect)
- load_all_nodes();
+ load_all_nodes();
/* Open device */
devops = os_devops;
if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
- if(!strcasecmp(type, "dummy"))
+ if(!strcasecmp(type, "dummy")) {
devops = dummy_devops;
- else if(!strcasecmp(type, "raw_socket"))
+ } else if(!strcasecmp(type, "raw_socket")) {
devops = raw_socket_devops;
- else if(!strcasecmp(type, "multicast"))
+ } else if(!strcasecmp(type, "multicast")) {
devops = multicast_devops;
+ } else if(!strcasecmp(type, "fd")) {
+ devops = fd_devops;
+ }
+
#ifdef ENABLE_UML
- else if(!strcasecmp(type, "uml"))
+ else if(!strcasecmp(type, "uml")) {
devops = uml_devops;
+ }
+
#endif
#ifdef ENABLE_VDE
- else if(!strcasecmp(type, "vde"))
+ else if(!strcasecmp(type, "vde")) {
devops = vde_devops;
+ }
+
#endif
+ free(type);
}
get_config_bool(lookup_config(config_tree, "DeviceStandby"), &device_standby);
- if(!devops.setup())
+ if(!devops.setup()) {
return false;
+ }
- if(device_fd >= 0)
+ if(device_fd >= 0) {
io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
+ }
/* Open sockets */
}
for(int i = 0; i < listen_sockets; i++) {
- salen = sizeof sa;
+ 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(sockerrno));
return false;
#endif
int udp_fd = setup_vpn_in_socket(&sa);
- if(udp_fd < 0)
+
+ if(udp_fd < 0) {
return false;
+ }
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);
for(config_t *cfg = lookup_config(config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
cfgs++;
get_config_string(cfg, &address);
- if(!add_listen_address(address, true))
+
+ if(!add_listen_address(address, true)) {
return false;
+ }
}
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))
+
+ if(!add_listen_address(address, false)) {
return false;
+ }
}
if(!cfgs)
- if(!add_listen_address(address, NULL))
+ if(!add_listen_address(address, NULL)) {
return false;
+ }
}
if(!listen_sockets) {
if(!port_specified || atoi(myport) == 0) {
sockaddr_t sa;
- socklen_t salen = sizeof sa;
+ socklen_t salen = sizeof(sa);
+
if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
free(myport);
sockaddr2str(&sa, NULL, &myport);
- if(!myport)
+
+ if(!myport) {
myport = xstrdup("655");
+ }
}
}
xasprintf(&myself->hostname, "MYSELF port %s", myport);
myself->connection->hostname = xstrdup(myself->hostname);
+ char *upnp = NULL;
+ get_config_string(lookup_config(config_tree, "UPnP"), &upnp);
+ bool upnp_tcp = false;
+ bool upnp_udp = false;
+
+ if(upnp) {
+ if(!strcasecmp(upnp, "yes")) {
+ upnp_tcp = upnp_udp = true;
+ } else if(!strcasecmp(upnp, "udponly")) {
+ upnp_udp = true;
+ }
+
+ free(upnp);
+ }
+
+ if(upnp_tcp || upnp_udp) {
+#ifdef HAVE_MINIUPNPC
+ upnp_init(upnp_tcp, upnp_udp);
+#else
+ logger(DEBUG_ALWAYS, LOG_WARNING, "UPnP was requested, but tinc isn't built with miniupnpc support!");
+#endif
+ }
+
/* Done. */
last_config_check = now.tv_sec;
if(pinginterval < 1) {
pinginterval = 86400;
}
- } else
+ } else {
pinginterval = 60;
+ }
- if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
+ if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout)) {
pingtimeout = 5;
- if(pingtimeout < 1 || pingtimeout > pinginterval)
+ }
+
+ if(pingtimeout < 1 || pingtimeout > pinginterval) {
pingtimeout = pinginterval;
+ }
- if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize))
+ if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize)) {
maxoutbufsize = 10 * MTU;
+ }
- if(!setup_myself())
+ if(!setup_myself()) {
return false;
+ }
- if(!init_control())
+ if(!init_control()) {
return false;
+ }
- if (!device_standby)
+ if(!device_standby) {
device_enable();
+ }
/* Run subnet-up scripts for our own subnets */
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)
+ if(c->status.control) {
c->socket = -1;
+ }
+
c->outgoing = NULL;
terminate_connection(c, false);
}
- if(outgoing_list)
+ if(outgoing_list) {
list_delete_list(outgoing_list);
+ }
if(myself && myself->connection) {
subnet_update(myself, NULL, false);
- terminate_connection(myself->connection, false);
- free_connection(myself->connection);
+ connection_del(myself->connection);
}
for(int i = 0; i < listen_sockets; i++) {
exit_nodes();
exit_connections();
- if (!device_standby)
+ if(!device_standby) {
device_disable();
+ }
free(myport);
- if (device_fd >= 0)
+ if(device_fd >= 0) {
io_del(&device_io);
- if (devops.close)
+ }
+
+ if(devops.close) {
devops.close();
+ }
exit_control();
- free(myname);
free(scriptextension);
free(scriptinterpreter);
projects / tinc / blobdiff