/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2014 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 "xalloc.h"
char *myport;
+static char *myname;
static io_t device_io;
devops_t devops;
+bool device_standby = false;
char *proxyhost;
char *proxyport;
}
c->ecdsa = ecdsa_read_pem_public_key(fp);
- fclose(fp);
- if(!c->ecdsa)
+ if(!c->ecdsa && errno != ENOENT)
logger(DEBUG_ALWAYS, LOG_ERR, "Parsing Ed25519 public key file `%s' failed.", fname);
+
+ fclose(fp);
free(fname);
return c->ecdsa;
}
+#ifndef DISABLE_LEGACY
bool read_rsa_public_key(connection_t *c) {
- if(ecdsa_active(c->ecdsa))
- return true;
-
FILE *fp;
char *fname;
char *n;
free(fname);
return c->rsa;
}
+#endif
static bool read_ecdsa_private_key(void) {
FILE *fp;
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");
logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
}
- free(fname);
return invitation_key;
}
+#ifndef DISABLE_LEGACY
static bool read_rsa_private_key(void) {
FILE *fp;
char *fname;
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;
}
free(fname);
return myself->connection->rsa;
}
+#endif
static timeout_t keyexpire_timeout;
void regenerate_key(void) {
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 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((s2 = lookup_subnet(n, s))) {
s2->expires = -1;
+ free(s);
} else {
subnet_add(n, s);
}
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;
}
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);
- char hostname[32] = "";
- if(!envname) {
- if(strcmp(name + 1, "HOST")) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1);
- return false;
- }
- if(gethostname(hostname, sizeof hostname) || !*hostname) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno));
- return false;
- }
- hostname[31] = 0;
- envname = hostname;
- }
- free(name);
- name = xstrdup(envname);
- for(char *c = name; *c; c++)
- if(!isalnum(*c))
- *c = '_';
- }
-
- 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 *fmode = NULL;
char *bmode = NULL;
char *afname = NULL;
- char *address = NULL;
char *space;
bool choice;
if(myself->options & OPTION_TCPONLY)
myself->options |= OPTION_INDIRECT;
- get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
- get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
+ 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);
- 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);
- }
+ 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"))
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(priorityinheritance)
logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
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);
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)
*/
return false;
}
+ myname = xstrdup(name);
myself = new_node();
myself->connection = new_connection();
myself->name = name;
myself->options |= PROT_MINOR << 24;
+#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)
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(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;
}
sptps_replaywin = replaywin;
}
+#ifndef DISABLE_LEGACY
/* Generate packet encryption key */
if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
}
free(digest);
+#endif
/* Compression */
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;
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;
}
/* If no Port option was specified, set myport to the port used by the first listening socket. */
- if(!port_specified) {
+ if(!port_specified || atoi(myport) == 0) {
sockaddr_t sa;
socklen_t salen = sizeof sa;
if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
if(!init_control())
return false;
- /* Run tinc-up script to further initialize the tap interface */
-
- char *envp[5] = {NULL};
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
-
- execute_script("tinc-up", envp);
-
- for(int i = 0; i < 4; i++)
- free(envp[i]);
+ if (!device_standby)
+ device_enable();
/* Run subnet-up scripts for our own subnets */
close(listen_socket[i].udp.fd);
}
- char *envp[5] = {NULL};
- xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
- xasprintf(&envp[1], "DEVICE=%s", device ? : "");
- xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
- xasprintf(&envp[3], "NAME=%s", myself->name);
-
exit_requests();
exit_edges();
exit_subnets();
exit_nodes();
exit_connections();
- execute_script("tinc-down", envp);
+ if (!device_standby)
+ device_disable();
- if(myport) free(myport);
-
- for(int i = 0; i < 4; i++)
- free(envp[i]);
+ free(myport);
if (device_fd >= 0)
io_del(&device_io);
- devops.close();
+ if (devops.close)
+ devops.close();
exit_control();
+ free(myname);
+ free(scriptextension);
+ free(scriptinterpreter);
+
return;
}
projects / tinc / blobdiff