/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2013 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 "xalloc.h"
char *myport;
-static struct event device_ev;
+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))
+ 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/hosts/%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 */
if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
- result = ecdsa_set_base64_public_key(&n->ecdsa, p);
+ n->ecdsa = ecdsa_set_base64_public_key(p);
free(p);
goto exit;
}
/* Else, check for ECDSAPublicKeyFile statement and read it */
- free(fname);
+ if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname))
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
- if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &fname))
- xasprintf(&fname, "%s/hosts/%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));
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", pubname, strerror(errno));
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;
+
+ 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 */
if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
- result = ecdsa_set_base64_public_key(&c->ecdsa, p);
+ c->ecdsa = ecdsa_set_base64_public_key(p);
free(p);
- return result;
+ return c->ecdsa;
}
/* Else, check for ECDSAPublicKeyFile statement and read it */
if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
- xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
+ xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
fp = fopen(fname, "r");
return false;
}
- result = ecdsa_read_pem_public_key(&c->ecdsa, fp);
+ c->ecdsa = ecdsa_read_pem_public_key(fp);
fclose(fp);
- if(!result)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA public key file `%s' failed: %s", fname, strerror(errno));
+ if(!c->ecdsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
free(fname);
- return result;
+ return c->ecdsa;
}
bool read_rsa_public_key(connection_t *c) {
+ if(ecdsa_active(c->ecdsa))
+ return true;
+
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 */
if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
- xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
+ xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
fp = fopen(fname, "r");
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;
}
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/ecdsa_key.priv", confbase);
+ xasprintf(&fname, "%s" SLASH "ecdsa_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));
+ if(errno == ENOENT)
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an ECDSA keypair with `tinc -n %s generate-ecdsa-keys'.", netname ?: ".");
free(fname);
return false;
}
logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA 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)
+ if(!myself->connection->ecdsa)
logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
free(fname);
- return result;
+ return myself->connection->ecdsa;
+}
+
+static bool read_invitation_key(void) {
+ FILE *fp;
+ char *fname;
+
+ if(invitation_key) {
+ ecdsa_free(invitation_key);
+ invitation_key = NULL;
+ }
+
+ xasprintf(&fname, "%s" SLASH "invitations" SLASH "ecdsa_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 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;
- 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 true;
+ 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/rsa_key.priv", confbase);
+ xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
fp = fopen(fname, "r");
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;
}
-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();
}
/*
DIR *dir;
struct dirent *ent;
char *dname;
- char *fname;
- splay_tree_t *config_tree;
- config_t *cfg;
- subnet_t *s, *s2;
- node_t *n;
- bool result;
- xasprintf(&dname, "%s/hosts", confbase);
+ xasprintf(&dname, "%s" SLASH "hosts", confbase);
dir = opendir(dname);
if(!dir) {
logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
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/hosts/%s", confbase, ent->d_name);
+ splay_tree_t *config_tree;
init_configuration(&config_tree);
- result = read_config_file(config_tree, fname);
- free(fname);
- if(!result)
- continue;
+ read_config_options(config_tree, ent->d_name);
+ 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;
closedir(dir);
}
-/*
- 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, *mode, *afname, *cipher, *digest, *type;
- char *fname = NULL;
- char *address = NULL;
- char *envp[5];
- struct addrinfo *ai, *aip, hint = {0};
- bool choice;
- int i, err;
- int replaywin_int;
+void load_all_nodes(void) {
+ DIR *dir;
+ struct dirent *ent;
+ char *dname;
- myself = new_node();
- myself->connection = new_connection();
+ 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;
+ }
- myself->hostname = xstrdup("MYSELF");
- myself->connection->hostname = xstrdup("MYSELF");
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
- myself->connection->options = 0;
- myself->connection->protocol_major = PROT_MAJOR;
- myself->connection->protocol_minor = PROT_MINOR;
+ node_t *n = lookup_node(ent->d_name);
+ if(n)
+ continue;
- if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */
- logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
- return false;
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(n);
+ }
+
+ closedir(dir);
+}
+
+
+char *get_name(void) {
+ char *name = NULL;
+
+ 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")) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1);
+ return false;
+ }
+ char envname[32];
+ if(gethostname(envname, 32)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "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)) {
return false;
}
- myself->name = name;
- myself->connection->name = xstrdup(name);
- xasprintf(&fname, "%s/hosts/%s", confbase, name);
- read_config_options(config_tree, name);
- read_config_file(config_tree, fname);
- free(fname);
-
- get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
-
- if(experimental && !read_ecdsa_private_key())
- return false;
-
- if(!read_rsa_private_key())
- return false;
+ return name;
+}
- if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
- myport = xstrdup("655");
+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;
- 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);
- }
+ free(scriptinterpreter);
+ scriptinterpreter = NULL;
+ get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
- /* Read in all the subnets specified in the host configuration file */
- cfg = lookup_config(config_tree, "Subnet");
+ free(scriptextension);
+ if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
+#ifdef HAVE_MINGW
+ scriptextension = xstrdup(".bat");
+#else
+ scriptextension = xstrdup("");
+#endif
- while(cfg) {
- if(!get_config_subnet(cfg, &subnet))
+ 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;
+ }
- subnet_add(myself, subnet);
+ switch(proxytype) {
+ 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_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;
+ }
- cfg = lookup_config_next(config_tree, cfg);
+ free(proxy);
}
- /* Check some options */
-
if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
myself->options |= OPTION_INDIRECT;
myself->options |= OPTION_INDIRECT;
get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
- get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
- get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
- strictsubnets |= tunnelserver;
- if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) {
- if(!strcasecmp(mode, "router"))
+ 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(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);
- get_config_bool(lookup_config(config_tree, "Broadcast"), &broadcast);
+ 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 !defined(SOL_IP) || !defined(IP_TOS)
if(priorityinheritance)
} 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);
+ }
+
+ 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);
+
+ get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+
+ read_invitation_key();
+
+ return true;
+}
+
+/*
+ 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;
+
+ if(!(name = get_name())) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
+ return false;
+ }
+
+ 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");
+
+ xasprintf(&myself->hostname, "MYSELF port %s", myport);
+ myself->connection->hostname = xstrdup(myself->hostname);
+
+ myself->connection->options = 0;
+ myself->connection->protocol_major = PROT_MAJOR;
+ myself->connection->protocol_minor = PROT_MINOR;
+
+ myself->options |= PROT_MINOR << 24;
+
+ get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
+
+ if(experimental && !read_ecdsa_private_key())
+ return false;
+
+ if(!read_rsa_private_key())
+ return false;
+
+ 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);
+ }
+
+ /* Read in all the subnets specified in the host configuration file */
+
+ 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))
+ return false;
+
+ subnet_add(myself, subnet);
+ }
+
+ /* 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;
+ }
+ }
+
if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
if(udp_rcvbuf <= 0) {
logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
}
}
+ 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(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);
- }
-
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
-
/* 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(!(myself->incipher = cipher_open_by_name(cipher))) {
logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
return false;
}
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
- keylifetime = 3600;
+ free(cipher);
- regenerate_key();
+ send_key_changed();
+ 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(!(myself->indigest = digest_open_by_name(digest, maclength))) {
logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
return false;
}
+ free(digest);
+
/* 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 = 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 = 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;
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;
- }
- }
+ if(device_fd >= 0)
+ io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
/* 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);
- envp[4] = NULL;
execute_script("tinc-up", envp);
- for(i = 0; i < 4; i++)
+ for(int i = 0; i < 4; i++)
free(envp[i]);
/* Run subnet-up scripts for our own subnets */
/* Open sockets */
- listen_sockets = 0;
- cfg = lookup_config(config_tree, "BindToAddress");
+#ifndef HAVE_MINGW
+ int unix_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if(unix_fd < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not create UNIX socket: %s", sockstrerror(errno));
+ return false;
+ }
- do {
- get_config_string(cfg, &address);
- if(cfg)
- cfg = lookup_config_next(config_tree, cfg);
+ struct sockaddr_un sa;
+ sa.sun_family = AF_UNIX;
+ strncpy(sa.sun_path, unixsocketname, sizeof sa.sun_path);
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
+ if(connect(unix_fd, (struct sockaddr *)&sa, sizeof sa) >= 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "UNIX socket %s is still in use!", unixsocketname);
+ return false;
+ }
- err = getaddrinfo(address, myport, &hint, &ai);
- free(address);
+ unlink(unixsocketname);
+
+ if(bind(unix_fd, (struct sockaddr *)&sa, sizeof sa) < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not bind UNIX socket to %s: %s", unixsocketname, sockstrerror(errno));
+ return false;
+ }
+
+ if(listen(unix_fd, 3) < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not listen on UNIX socket %s: %s", unixsocketname, sockstrerror(errno));
+ return false;
+ }
+
+ io_add(&unix_socket, handle_new_unix_connection, &unix_socket, unix_fd, IO_READ);
+#endif
+
+ if(!do_detach && getenv("LISTEN_FDS")) {
+ sockaddr_t sa;
+ socklen_t salen;
- if(err || !ai) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
- gai_strerror(err));
+ listen_sockets = atoi(getenv("LISTEN_FDS"));
+#ifdef HAVE_UNSETENV
+ unsetenv("LISTEN_FDS");
+#endif
+
+ if(listen_sockets > MAXSOCKETS) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
return false;
}
- for(aip = ai; aip; aip = aip->ai_next) {
- if(listen_sockets >= MAXSOCKETS) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ 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;
}
- listen_socket[listen_sockets].tcp =
- setup_listen_socket((sockaddr_t *) aip->ai_addr);
+#ifdef FD_CLOEXEC
+ fcntl(i + 3, F_SETFD, FD_CLOEXEC);
+#endif
- if(listen_socket[listen_sockets].tcp < 0)
- continue;
+ int udp_fd = setup_vpn_in_socket(&sa);
+ if(udp_fd < 0)
+ return false;
- listen_socket[listen_sockets].udp =
- setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+ 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(listen_socket[listen_sockets].udp < 0) {
- close(listen_socket[listen_sockets].tcp);
- continue;
+ if(debug_level >= DEBUG_CONNECTIONS) {
+ hostname = sockaddr2hostname(&sa);
+ logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ free(hostname);
}
- 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();
- }
+ memcpy(&listen_socket[i].sa, &sa, salen);
+ }
+ } 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);
+
+ char *port = myport;
- 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(address) {
+ char *space = strchr(address, ' ');
+ if(space) {
+ *space++ = 0;
+ port = space;
+ }
+
+ if(!strcmp(address, "*"))
+ *address = 0;
}
- if(debug_level >= DEBUG_CONNECTIONS) {
- hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
- free(hostname);
+ struct addrinfo *ai, hint = {0};
+ hint.ai_family = addressfamily;
+ hint.ai_socktype = SOCK_STREAM;
+ hint.ai_protocol = IPPROTO_TCP;
+ hint.ai_flags = AI_PASSIVE;
+
+ 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;
}
- memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
- listen_sockets++;
- }
+ 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;
+ }
+
+ 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);
- freeaddrinfo(ai);
- } while(cfg);
+ 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++;
+ }
+
+ freeaddrinfo(ai);
+ } while(cfg);
+ }
if(listen_sockets)
logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
return false;
}
+ last_config_check = now.tv_sec;
+
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);
}
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);
}
+#ifndef HAVE_MINGW
+ io_del(&unix_socket);
+ close(unix_socket.fd);
+#endif
+
+ 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);
- envp[4] = NULL;
exit_requests();
exit_edges();
if(myport) free(myport);
- for(i = 0; i < 4; i++)
+ for(int i = 0; i < 4; i++)
free(envp[i]);
devops.close();