/* run this at startup */
Messenger *initMessenger(void)
{
Messenger *m = calloc(1, sizeof(Messenger));
if ( ! m )
return 0;
new_keys();
m_set_statusmessage(m, (uint8_t *)"Online", sizeof("Online"));
initNetCrypto();
IP ip;
ip.i = 0;
if (init_networking(ip, PORT) == -1)
return 0;
DHT_init();
LosslessUDP_init();
friendreq_init();
LANdiscovery_init();
set_nospam(random_int());
send_LANdiscovery(htons(PORT));
timer_single(&LANdiscovery, 0, LAN_DISCOVERY_INTERVAL);
return m;
}
/*Send a LAN discovery packet every LAN_DISCOVERY_INTERVAL seconds*/
static void LANdiscovery(void)
{
if (last_LANdiscovery + LAN_DISCOVERY_INTERVAL < unix_time()) {
send_LANdiscovery(htons(PORT));
last_LANdiscovery = unix_time();
}
}
/*Send a LAN discovery packet every LAN_DISCOVERY_INTERVAL seconds*/
static void LANdiscovery(Messenger *m)
{
if (m->last_LANdiscovery + LAN_DISCOVERY_INTERVAL < unix_time()) {
send_LANdiscovery(htons(PORT), m->net_crypto);
m->last_LANdiscovery = unix_time();
}
}
/* Send a LAN discovery packet every LAN_DISCOVERY_INTERVAL seconds. */
static void LANdiscovery(Friend_Connections *fr_c)
{
if (fr_c->last_LANdiscovery + LAN_DISCOVERY_INTERVAL < unix_time()) {
send_LANdiscovery(htons(TOX_PORT_DEFAULT), fr_c->dht);
fr_c->last_LANdiscovery = unix_time();
}
}
int main(int argc, char *argv[])
{
if (argc == 2 && !strncasecmp(argv[1], "-h", 3)) {
printf("Usage (connected) : %s [--ipv4|--ipv6] IP PORT KEY\n", argv[0]);
printf("Usage (unconnected): %s [--ipv4|--ipv6]\n", argv[0]);
exit(0);
}
/* let user override default by cmdline */
uint8_t ipv6enabled = TOX_ENABLE_IPV6_DEFAULT; /* x */
int argvoffset = cmdline_parsefor_ipv46(argc, argv, &ipv6enabled);
if (argvoffset < 0)
exit(1);
/* Initialize networking -
Bind to ip 0.0.0.0 / [::] : PORT */
IP ip;
ip_init(&ip, ipv6enabled);
DHT *dht = new_DHT(new_networking(ip, PORT));
Onion *onion = new_onion(dht);
Onion_Announce *onion_a = new_onion_announce(dht);
#ifdef DHT_NODE_EXTRA_PACKETS
bootstrap_set_callbacks(dht->net, DHT_VERSION_NUMBER, DHT_MOTD, sizeof(DHT_MOTD));
#endif
if (!(onion && onion_a)) {
printf("Something failed to initialize.\n");
exit(1);
}
perror("Initialization");
manage_keys(dht);
printf("Public key: ");
uint32_t i;
#ifdef TCP_RELAY_ENABLED
#define NUM_PORTS 3
uint16_t ports[NUM_PORTS] = {443, 3389, PORT};
TCP_Server *tcp_s = new_TCP_server(ipv6enabled, NUM_PORTS, ports, dht->self_public_key, dht->self_secret_key, onion);
if (tcp_s == NULL) {
printf("TCP server failed to initialize.\n");
exit(1);
}
#endif
FILE *file;
file = fopen("PUBLIC_ID.txt", "w");
for (i = 0; i < 32; i++) {
printf("%02hhX", dht->self_public_key[i]);
fprintf(file, "%02hhX", dht->self_public_key[i]);
}
fclose(file);
printf("\n");
printf("Port: %u\n", ntohs(dht->net->port));
if (argc > argvoffset + 3) {
printf("Trying to bootstrap into the network...\n");
uint16_t port = htons(atoi(argv[argvoffset + 2]));
uint8_t *bootstrap_key = hex_string_to_bin(argv[argvoffset + 3]);
int res = DHT_bootstrap_from_address(dht, argv[argvoffset + 1],
ipv6enabled, port, bootstrap_key);
free(bootstrap_key);
if (!res) {
printf("Failed to convert \"%s\" into an IP address. Exiting...\n", argv[argvoffset + 1]);
exit(1);
}
}
int is_waiting_for_dht_connection = 1;
uint64_t last_LANdiscovery = 0;
LANdiscovery_init(dht);
while (1) {
if (is_waiting_for_dht_connection && DHT_isconnected(dht)) {
printf("Connected to other bootstrap node successfully.\n");
is_waiting_for_dht_connection = 0;
}
do_DHT(dht);
if (is_timeout(last_LANdiscovery, is_waiting_for_dht_connection ? 5 : LAN_DISCOVERY_INTERVAL)) {
send_LANdiscovery(htons(PORT), dht);
last_LANdiscovery = unix_time();
}
#ifdef TCP_RELAY_ENABLED
do_TCP_server(tcp_s);
#endif
networking_poll(dht->net);
c_sleep(1);
}
return 0;
}
int main(int argc, char *argv[])
{
openlog(DAEMON_NAME, LOG_NOWAIT | LOG_PID, LOG_DAEMON);
if (argc < 2) {
syslog(LOG_ERR, "Please specify a path to a configuration file as the first argument. Exiting.\n");
return 1;
}
char *cfg_file_path = argv[1];
char *pid_file_path, *keys_file_path;
int port;
int enable_ipv6;
int enable_lan_discovery;
if (get_general_config(cfg_file_path, &pid_file_path, &keys_file_path, &port, &enable_ipv6, &enable_lan_discovery)) {
syslog(LOG_DEBUG, "General config read successfully\n");
} else {
syslog(LOG_ERR, "Couldn't read config file: %s. Exiting.\n", cfg_file_path);
return 1;
}
// not (1 <= port <= 65535)
if (port < 1 || port > 65535) {
syslog(LOG_ERR, "Invalid port: %d, must be 1 <= port <= 65535. Exiting.\n", port);
return 1;
}
// Check if the PID file exists
if (fopen(pid_file_path, "r")) {
syslog(LOG_ERR, "Another instance of the daemon is already running, PID file %s exists. Exiting.\n", pid_file_path);
return 1;
}
IP ip;
ip_init(&ip, enable_ipv6);
DHT *dht = new_DHT(new_net_crypto(new_networking(ip, port)));
if (dht == NULL) {
syslog(LOG_ERR, "Couldn't initialize Tox DHT instance. Exiting.\n");
return 1;
}
Onion *onion = new_onion(dht);
Onion_Announce *onion_a = new_onion_announce(dht);
if (!(onion && onion_a)) {
syslog(LOG_ERR, "Couldn't initialize Tox Onion. Exiting.\n");
return 1;
}
if (enable_lan_discovery) {
LANdiscovery_init(dht);
}
if (manage_keys(dht, keys_file_path)) {
syslog(LOG_DEBUG, "Keys are managed successfully\n");
} else {
syslog(LOG_ERR, "Couldn't read/write: %s. Exiting.\n", keys_file_path);
return 1;
}
if (bootstrap_from_config(cfg_file_path, dht, enable_ipv6)) {
syslog(LOG_DEBUG, "List of bootstrap servers read successfully\n");
} else {
syslog(LOG_ERR, "Couldn't read list of bootstrap servers in %s. Exiting.\n", cfg_file_path);
return 1;
}
print_public_key(dht->c->self_public_key);
// Write the PID file
FILE *pidf = fopen(pid_file_path, "w");
if (pidf == NULL) {
syslog(LOG_ERR, "Can't open the PID file for writing: %s. Exiting.\n", pid_file_path);
return 1;
}
free(pid_file_path);
free(keys_file_path);
// Fork off from the parent process
pid_t pid = fork();
if (pid < 0) {
syslog(LOG_ERR, "Forking failed. Exiting.\n");
return 1;
}
if (pid > 0) {
syslog(LOG_DEBUG, "Forked successfully: PID: %d.\n", pid);
return 0;
}
// Change the file mode mask
umask(0);
fprintf(pidf, "%d\n", pid);
fclose(pidf);
// Create a new SID for the child process
if (setsid() < 0) {
syslog(LOG_ERR, "SID creation failure. Exiting.\n");
return 1;
}
// Change the current working directory
if ((chdir("/")) < 0) {
syslog(LOG_ERR, "Couldn't change working directory to '/'. Exiting.\n");
return 1;
}
// Go quiet
close(STDOUT_FILENO);
close(STDIN_FILENO);
close(STDERR_FILENO);
uint64_t last_LANdiscovery = 0;
uint16_t htons_port = htons(port);
int waiting_for_dht_connection = 1;
while (1) {
do_DHT(dht);
if (enable_lan_discovery && is_timeout(last_LANdiscovery, LAN_DISCOVERY_INTERVAL)) {
send_LANdiscovery(htons_port, dht);
last_LANdiscovery = unix_time();
}
networking_poll(dht->net);
if (waiting_for_dht_connection && DHT_isconnected(dht)) {
syslog(LOG_DEBUG, "Connected to other bootstrap server successfully.\n");
waiting_for_dht_connection = 0;
}
sleep;
}
return 1;
}
/*Send a LAN discovery packet every LAN_DISCOVERY_INTERVAL seconds*/
int LANdiscovery(timer *t, void *arg)
{
send_LANdiscovery(htons(PORT));
timer_start(t, LAN_DISCOVERY_INTERVAL);
return 0;
}
int main(int argc, char *argv[])
{
openlog(DAEMON_NAME, LOG_NOWAIT | LOG_PID, LOG_DAEMON);
syslog(LOG_INFO, "Running \"%s\" version %lu.\n", DAEMON_NAME, DAEMON_VERSION_NUMBER);
if (argc < 2) {
syslog(LOG_ERR, "Please specify a path to a configuration file as the first argument. Exiting.\n");
return 1;
}
const char *cfg_file_path = argv[1];
char *pid_file_path, *keys_file_path;
int port;
int enable_ipv6;
int enable_ipv4_fallback;
int enable_lan_discovery;
int enable_tcp_relay;
uint16_t *tcp_relay_ports;
int tcp_relay_port_count;
int enable_motd;
char *motd;
if (get_general_config(cfg_file_path, &pid_file_path, &keys_file_path, &port, &enable_ipv6, &enable_ipv4_fallback,
&enable_lan_discovery, &enable_tcp_relay, &tcp_relay_ports, &tcp_relay_port_count, &enable_motd, &motd)) {
syslog(LOG_DEBUG, "General config read successfully\n");
} else {
syslog(LOG_ERR, "Couldn't read config file: %s. Exiting.\n", cfg_file_path);
return 1;
}
if (port < MIN_ALLOWED_PORT || port > MAX_ALLOWED_PORT) {
syslog(LOG_ERR, "Invalid port: %d, should be in [%d, %d]. Exiting.\n", port, MIN_ALLOWED_PORT, MAX_ALLOWED_PORT);
return 1;
}
// Check if the PID file exists
FILE *pid_file;
if ((pid_file = fopen(pid_file_path, "r"))) {
syslog(LOG_ERR, "Another instance of the daemon is already running, PID file %s exists.\n", pid_file_path);
fclose(pid_file);
}
IP ip;
ip_init(&ip, enable_ipv6);
Networking_Core *net = new_networking(ip, port);
if (net == NULL) {
if (enable_ipv6 && enable_ipv4_fallback) {
syslog(LOG_DEBUG, "Couldn't initialize IPv6 networking. Falling back to using IPv4.\n");
enable_ipv6 = 0;
ip_init(&ip, enable_ipv6);
net = new_networking(ip, port);
if (net == NULL) {
syslog(LOG_DEBUG, "Couldn't fallback to IPv4. Exiting.\n");
return 1;
}
} else {
syslog(LOG_DEBUG, "Couldn't initialize networking. Exiting.\n");
return 1;
}
}
DHT *dht = new_DHT(net);
if (dht == NULL) {
syslog(LOG_ERR, "Couldn't initialize Tox DHT instance. Exiting.\n");
return 1;
}
Onion *onion = new_onion(dht);
Onion_Announce *onion_a = new_onion_announce(dht);
if (!(onion && onion_a)) {
syslog(LOG_ERR, "Couldn't initialize Tox Onion. Exiting.\n");
return 1;
}
if (enable_motd) {
if (bootstrap_set_callbacks(dht->net, DAEMON_VERSION_NUMBER, (uint8_t *)motd, strlen(motd) + 1) == 0) {
syslog(LOG_DEBUG, "Set MOTD successfully.\n");
} else {
syslog(LOG_ERR, "Couldn't set MOTD: %s. Exiting.\n", motd);
return 1;
}
free(motd);
}
if (manage_keys(dht, keys_file_path)) {
syslog(LOG_DEBUG, "Keys are managed successfully.\n");
} else {
syslog(LOG_ERR, "Couldn't read/write: %s. Exiting.\n", keys_file_path);
return 1;
}
TCP_Server *tcp_server = NULL;
if (enable_tcp_relay) {
if (tcp_relay_port_count == 0) {
syslog(LOG_ERR, "No TCP relay ports read. Exiting.\n");
return 1;
}
tcp_server = new_TCP_server(enable_ipv6, tcp_relay_port_count, tcp_relay_ports, dht->self_public_key,
dht->self_secret_key, onion);
// tcp_relay_port_count != 0 at this point
free(tcp_relay_ports);
if (tcp_server != NULL) {
syslog(LOG_DEBUG, "Initialized Tox TCP server successfully.\n");
} else {
syslog(LOG_ERR, "Couldn't initialize Tox TCP server. Exiting.\n");
return 1;
}
}
if (bootstrap_from_config(cfg_file_path, dht, enable_ipv6)) {
syslog(LOG_DEBUG, "List of bootstrap nodes read successfully.\n");
} else {
syslog(LOG_ERR, "Couldn't read list of bootstrap nodes in %s. Exiting.\n", cfg_file_path);
return 1;
}
print_public_key(dht->self_public_key);
// Write the PID file
FILE *pidf = fopen(pid_file_path, "a+");
if (pidf == NULL) {
syslog(LOG_ERR, "Couldn't open the PID file for writing: %s. Exiting.\n", pid_file_path);
return 1;
}
free(pid_file_path);
free(keys_file_path);
// Fork off from the parent process
const pid_t pid = fork();
if (pid > 0) {
fprintf(pidf, "%d", pid);
fclose(pidf);
syslog(LOG_DEBUG, "Forked successfully: PID: %d.\n", pid);
return 0;
} else {
fclose(pidf);
}
if (pid < 0) {
syslog(LOG_ERR, "Forking failed. Exiting.\n");
return 1;
}
// Change the file mode mask
umask(0);
// Create a new SID for the child process
if (setsid() < 0) {
syslog(LOG_ERR, "SID creation failure. Exiting.\n");
return 1;
}
// Change the current working directory
if ((chdir("/")) < 0) {
syslog(LOG_ERR, "Couldn't change working directory to '/'. Exiting.\n");
return 1;
}
// Go quiet
close(STDOUT_FILENO);
close(STDIN_FILENO);
close(STDERR_FILENO);
uint64_t last_LANdiscovery = 0;
const uint16_t htons_port = htons(port);
int waiting_for_dht_connection = 1;
if (enable_lan_discovery) {
LANdiscovery_init(dht);
syslog(LOG_DEBUG, "Initialized LAN discovery.\n");
}
while (1) {
do_DHT(dht);
if (enable_lan_discovery && is_timeout(last_LANdiscovery, LAN_DISCOVERY_INTERVAL)) {
send_LANdiscovery(htons_port, dht);
last_LANdiscovery = unix_time();
}
if (enable_tcp_relay) {
do_TCP_server(tcp_server);
}
networking_poll(dht->net);
if (waiting_for_dht_connection && DHT_isconnected(dht)) {
syslog(LOG_DEBUG, "Connected to other bootstrap node successfully.\n");
waiting_for_dht_connection = 0;
}
sleep;
}
return 1;
}
int main(int argc, char *argv[])
{
if (argc == 2 && !strncasecmp(argv[1], "-h", 3)) {
printf("Usage (connected) : %s [--ipv4|--ipv6] IP PORT KEY\n", argv[0]);
printf("Usage (unconnected): %s [--ipv4|--ipv6]\n", argv[0]);
exit(0);
}
/* let user override default by cmdline */
uint8_t ipv6enabled = TOX_ENABLE_IPV6_DEFAULT; /* x */
int argvoffset = cmdline_parsefor_ipv46(argc, argv, &ipv6enabled);
if (argvoffset < 0)
exit(1);
/* Initialize networking -
Bind to ip 0.0.0.0 / [::] : PORT */
IP ip;
ip_init(&ip, ipv6enabled);
DHT *dht = new_DHT(new_net_crypto(new_networking(ip, PORT)));
perror("Initialization");
manage_keys(dht);
printf("Public key: ");
uint32_t i;
FILE *file;
file = fopen("PUBLIC_ID.txt", "w");
for (i = 0; i < 32; i++) {
if (dht->c->self_public_key[i] < 16)
printf("0");
printf("%hhX", dht->c->self_public_key[i]);
fprintf(file, "%hhX", dht->c->self_public_key[i]);
}
fclose(file);
printf("\n");
printf("Port: %u\n", ntohs(dht->c->lossless_udp->net->port));
if (argc > argvoffset + 3) {
printf("Trying to bootstrap into the network...\n");
uint16_t port = htons(atoi(argv[argvoffset + 2]));
uint8_t *bootstrap_key = hex_string_to_bin(argv[argvoffset + 3]);
int res = DHT_bootstrap_from_address(dht, argv[argvoffset + 1],
ipv6enabled, port, bootstrap_key);
free(bootstrap_key);
if (!res) {
printf("Failed to convert \"%s\" into an IP address. Exiting...\n", argv[argvoffset + 1]);
exit(1);
}
}
int is_waiting_for_dht_connection = 1;
uint64_t last_LANdiscovery = 0;
LANdiscovery_init(dht);
while (1) {
if (is_waiting_for_dht_connection && DHT_isconnected(dht)) {
printf("Connected to other bootstrap server successfully.\n");
is_waiting_for_dht_connection = 0;
}
do_DHT(dht);
if (last_LANdiscovery + (is_waiting_for_dht_connection ? 5 : LAN_DISCOVERY_INTERVAL) < unix_time()) {
send_LANdiscovery(htons(PORT), dht->c);
last_LANdiscovery = unix_time();
}
networking_poll(dht->c->lossless_udp->net);
c_sleep(1);
}
return 0;
}
