/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2017 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2021 Guus Sliepen <guus@tinc-vpn.org>
2006 Scott Lamb <slamb@slamb.org>
2010 Brandon Black <blblack@gmail.com>
devops_t devops;
bool device_standby = false;
-char *proxyhost;
-char *proxyport;
-char *proxyuser;
-char *proxypass;
+char *proxyhost = NULL;
+char *proxyport = NULL;
+char *proxyuser = NULL;
+char *proxypass = NULL;
+
proxytype_t proxytype;
bool autoconnect;
bool disablebuggypeers;
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 ? : ".");
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an Ed25519 key pair with `tinc -n %s generate-ed25519-keys'.", netname ? netname : ".");
}
free(fname);
return false;
}
-#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
+#ifndef HAVE_MINGW
struct stat s;
if(fstat(fileno(fp), &s)) {
return false;
}
- if(s.st_mode & ~0100700) {
+ if(s.st_mode & ~0100700u) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for Ed25519 private key file `%s'!", fname);
}
fname, strerror(errno));
if(errno == ENOENT) {
- logger(DEBUG_ALWAYS, LOG_INFO, "Create an RSA keypair with `tinc -n %s generate-rsa-keys'.", netname ? : ".");
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an RSA key pair with `tinc -n %s generate-rsa-keys'.", netname ? netname : ".");
}
free(fname);
return false;
}
-#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
+#ifndef HAVE_MINGW
struct stat s;
if(fstat(fileno(fp), &s)) {
return false;
}
- if(s.st_mode & ~0100700) {
+ if(s.st_mode & ~0100700u) {
logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
}
}
#endif
+#ifndef DISABLE_LEGACY
static timeout_t keyexpire_timeout;
static void keyexpire_handler(void *data) {
keylifetime, rand() % 100000
});
}
+#endif
void regenerate_key(void) {
logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
}
bool setup_myself_reloadable(void) {
- char *proxy = 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);
+ get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
free(scriptextension);
scriptextension = xstrdup("");
}
+ char *proxy = NULL;
+
get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
if(proxy) {
+ char *space;
+
if((space = strchr(proxy, ' '))) {
*space++ = 0;
}
proxytype = PROXY_EXEC;
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
+ free(proxy);
return false;
}
+ free(proxyhost);
+ proxyhost = NULL;
+
+ free(proxyport);
+ proxyport = NULL;
+
+ free(proxyuser);
+ proxyuser = NULL;
+
+ free(proxypass);
+ proxypass = NULL;
+
switch(proxytype) {
case PROXY_NONE:
default:
case PROXY_EXEC:
if(!space || !*space) {
logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
+ free(proxy);
return false;
}
- proxyhost = xstrdup(space);
+ proxyhost = xstrdup(space);
break;
case PROXY_SOCKS4:
*space++ = 0, proxyport = space;
}
+ if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
+ proxyport = NULL;
+ proxyhost = NULL;
+ free(proxy);
+ return false;
+ }
+
if(space && (space = strchr(space, ' '))) {
*space++ = 0, proxyuser = 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);
free(proxy);
}
+ bool choice;
+
if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice) {
myself->options |= OPTION_INDIRECT;
}
get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
+ char *rmode = NULL;
+
if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
if(!strcasecmp(rmode, "router")) {
routing_mode = RMODE_ROUTER;
routing_mode = RMODE_HUB;
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
+ free(rmode);
return false;
}
free(rmode);
}
+ char *fmode = NULL;
+
if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
if(!strcasecmp(fmode, "off")) {
forwarding_mode = FMODE_OFF;
forwarding_mode = FMODE_KERNEL;
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
+ free(fmode);
return false;
}
get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl);
+ char *bmode = NULL;
+
if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
if(!strcasecmp(bmode, "no")) {
broadcast_mode = BMODE_NONE;
broadcast_mode = BMODE_DIRECT;
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
+ free(bmode);
return false;
}
free(bmode);
}
+ /* Delete all broadcast subnets before re-adding them */
+
+ for splay_each(subnet_t, s, subnet_tree) {
+ if(!s->owner) {
+ splay_delete_node(subnet_tree, node);
+ }
+ }
+
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++) {
maxtimeout = 900;
}
+ char *afname = NULL;
+
if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
if(!strcasecmp(afname, "IPv4")) {
addressfamily = AF_INET;
addressfamily = AF_UNSPEC;
} else {
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
+ free(afname);
return false;
}
if(listen_sockets >= MAXSOCKETS) {
logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ freeaddrinfo(ai);
return false;
}
Configure node_t myself and set up the local sockets (listen only)
*/
static bool setup_myself(void) {
- char *name, *hostname, *cipher, *digest, *type;
+ char *name, *hostname, *type;
char *address = NULL;
bool port_specified = false;
logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
return false;
}
+
+ udp_rcvbuf_warnings = true;
}
if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
return false;
}
+
+ udp_sndbuf_warnings = true;
}
get_config_int(lookup_config(config_tree, "FWMark"), &fwmark);
#ifndef DISABLE_LEGACY
/* Generate packet encryption key */
+ char *cipher;
+
if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher)) {
cipher = xstrdup("aes-256-cbc");
}
myself->incipher = NULL;
} else if(!(myself->incipher = cipher_open_by_name(cipher))) {
logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
+ free(cipher);
return false;
}
return false;
}
+ char *digest;
+
if(!get_config_string(lookup_config(config_tree, "Digest"), &digest)) {
digest = xstrdup("sha256");
}
myself->indigest = NULL;
} else if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
+ free(digest);
return false;
}
/* Compression */
if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
- if(myself->incompression < 0 || myself->incompression > 11) {
+ switch(myself->incompression) {
+ case 12:
+#ifdef HAVE_LZ4
+ break;
+#else
logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "LZ4 compression is unavailable on this node.");
+ return false;
+#endif
+
+ case 11:
+ case 10:
+#ifdef HAVE_LZO
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "LZO compression is unavailable on this node.");
+ return false;
+#endif
+
+ case 9:
+ case 8:
+ case 7:
+ case 6:
+ case 5:
+ case 4:
+ case 3:
+ case 2:
+ case 1:
+#ifdef HAVE_ZLIB
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "ZLIB compression is unavailable on this node.");
+ return false;
+#endif
+
+ case 0:
+ break;
+
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "Compression level %i is unrecognized by this node.", myself->incompression);
return false;
}
} else {
devops = raw_socket_devops;
} else if(!strcasecmp(type, "multicast")) {
devops = multicast_devops;
- } else if(!strcasecmp(type, "fd")) {
+ }
+
+#ifdef HAVE_SYS_UN_H
+ else if(!strcasecmp(type, "fd")) {
devops = fd_devops;
}
+#endif
#ifdef ENABLE_UML
else if(!strcasecmp(type, "uml")) {
devops = uml_devops;
if(myself && myself->connection) {
subnet_update(myself, NULL, false);
- connection_del(myself->connection);
+ free_connection(myself->connection);
}
for(int i = 0; i < listen_sockets; i++) {
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