diff options
author | Maxim Biro <nurupo.contributions@gmail.com> | 2014-08-16 23:19:23 -0400 |
---|---|---|
committer | Maxim Biro <nurupo.contributions@gmail.com> | 2014-08-16 23:19:23 -0400 |
commit | 2040fc41d2ee53eb2d462e43e0f306613f48a685 (patch) | |
tree | e7b77afaceca61a9a0ac2222086421db6a0a6582 /other/bootstrap_daemon/tox_bootstrap_daemon.c | |
parent | bb1bb583524cc2a955b2492d0f0dbc2dc570fe4c (diff) |
Renamed tox_bootstrap_daemon into tox-bootstrapd
Diffstat (limited to 'other/bootstrap_daemon/tox_bootstrap_daemon.c')
-rw-r--r-- | other/bootstrap_daemon/tox_bootstrap_daemon.c | 685 |
1 files changed, 0 insertions, 685 deletions
diff --git a/other/bootstrap_daemon/tox_bootstrap_daemon.c b/other/bootstrap_daemon/tox_bootstrap_daemon.c deleted file mode 100644 index 5f8f9f76..00000000 --- a/other/bootstrap_daemon/tox_bootstrap_daemon.c +++ /dev/null | |||
@@ -1,685 +0,0 @@ | |||
1 | /* tox_bootstrap_daemon.c | ||
2 | * | ||
3 | * Tox DHT bootstrap node daemon. | ||
4 | * | ||
5 | * Copyright (C) 2014 Tox project All Rights Reserved. | ||
6 | * | ||
7 | * This file is part of Tox. | ||
8 | * | ||
9 | * Tox is free software: you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License as published by | ||
11 | * the Free Software Foundation, either version 3 of the License, or | ||
12 | * (at your option) any later version. | ||
13 | * | ||
14 | * Tox is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 | * GNU General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with Tox. If not, see <http://www.gnu.org/licenses/>. | ||
21 | * | ||
22 | */ | ||
23 | |||
24 | // system provided | ||
25 | #include <arpa/inet.h> | ||
26 | #include <syslog.h> | ||
27 | #include <sys/stat.h> | ||
28 | #include <sys/types.h> | ||
29 | #include <unistd.h> | ||
30 | |||
31 | // C | ||
32 | #include <stdio.h> | ||
33 | #include <stdlib.h> | ||
34 | #include <string.h> | ||
35 | |||
36 | // 3rd party | ||
37 | #include <libconfig.h> | ||
38 | |||
39 | // ./configure | ||
40 | #ifdef HAVE_CONFIG_H | ||
41 | #include "config.h" | ||
42 | #endif | ||
43 | |||
44 | // toxcore | ||
45 | #include "../../toxcore/LAN_discovery.h" | ||
46 | #include "../../toxcore/onion_announce.h" | ||
47 | #include "../../toxcore/TCP_server.h" | ||
48 | #include "../../toxcore/util.h" | ||
49 | |||
50 | // misc | ||
51 | #include "../bootstrap_node_packets.c" | ||
52 | #include "../../testing/misc_tools.c" | ||
53 | |||
54 | |||
55 | #define DAEMON_NAME "tox_bootstrap_daemon" | ||
56 | #define DAEMON_VERSION_NUMBER 2014051800UL // yyyymmmddvv format: yyyy year, mm month, dd day, vv version change count for that day | ||
57 | |||
58 | #define SLEEP_TIME_MILLISECONDS 30 | ||
59 | #define sleep usleep(1000*SLEEP_TIME_MILLISECONDS) | ||
60 | |||
61 | #define DEFAULT_PID_FILE_PATH ".tox_bootstrap_daemon.pid" | ||
62 | #define DEFAULT_KEYS_FILE_PATH ".tox_bootstrap_daemon.keys" | ||
63 | #define DEFAULT_PORT 33445 | ||
64 | #define DEFAULT_ENABLE_IPV6 0 // 1 - true, 0 - false | ||
65 | #define DEFAULT_ENABLE_LAN_DISCOVERY 1 // 1 - true, 0 - false | ||
66 | #define DEFAULT_ENABLE_TCP_RELAY 1 // 1 - true, 0 - false | ||
67 | #define DEFAULT_TCP_RELAY_PORTS 443, 3389, 33445 // comma-separated list of ports. make sure to adjust DEFAULT_TCP_RELAY_PORTS_COUNT accordingly | ||
68 | #define DEFAULT_TCP_RELAY_PORTS_COUNT 3 | ||
69 | #define DEFAULT_ENABLE_MOTD 1 // 1 - true, 0 - false | ||
70 | #define DEFAULT_MOTD DAEMON_NAME | ||
71 | |||
72 | #define MIN_ALLOWED_PORT 1 | ||
73 | #define MAX_ALLOWED_PORT 65535 | ||
74 | |||
75 | |||
76 | // Uses the already existing key or creates one if it didn't exist | ||
77 | // | ||
78 | // retirns 1 on success | ||
79 | // 0 on failure - no keys were read or stored | ||
80 | |||
81 | int manage_keys(DHT *dht, char *keys_file_path) | ||
82 | { | ||
83 | const uint32_t KEYS_SIZE = crypto_box_PUBLICKEYBYTES + crypto_box_SECRETKEYBYTES; | ||
84 | uint8_t keys[KEYS_SIZE]; | ||
85 | FILE *keys_file; | ||
86 | |||
87 | // Check if file exits, proceed to open and load keys | ||
88 | keys_file = fopen(keys_file_path, "r"); | ||
89 | |||
90 | if (keys_file != NULL) { | ||
91 | size_t read_size = fread(keys, sizeof(uint8_t), KEYS_SIZE, keys_file); | ||
92 | |||
93 | if (read_size != KEYS_SIZE) { | ||
94 | fclose(keys_file); | ||
95 | return 0; | ||
96 | } | ||
97 | |||
98 | memcpy(dht->self_public_key, keys, crypto_box_PUBLICKEYBYTES); | ||
99 | memcpy(dht->self_secret_key, keys + crypto_box_PUBLICKEYBYTES, crypto_box_SECRETKEYBYTES); | ||
100 | } else { | ||
101 | // Otherwise save new keys | ||
102 | memcpy(keys, dht->self_public_key, crypto_box_PUBLICKEYBYTES); | ||
103 | memcpy(keys + crypto_box_PUBLICKEYBYTES, dht->self_secret_key, crypto_box_SECRETKEYBYTES); | ||
104 | |||
105 | keys_file = fopen(keys_file_path, "w"); | ||
106 | |||
107 | size_t write_size = fwrite(keys, sizeof(uint8_t), KEYS_SIZE, keys_file); | ||
108 | |||
109 | if (write_size != KEYS_SIZE) { | ||
110 | fclose(keys_file); | ||
111 | return 0; | ||
112 | } | ||
113 | } | ||
114 | |||
115 | fclose(keys_file); | ||
116 | |||
117 | return 1; | ||
118 | } | ||
119 | |||
120 | // Parses tcp relay ports from `cfg` and puts them into `tcp_relay_ports` array | ||
121 | // | ||
122 | // Supposed to be called from get_general_config only | ||
123 | // | ||
124 | // Important: iff `tcp_relay_port_count` > 0, then you are responsible for freeing `tcp_relay_ports` | ||
125 | |||
126 | void parse_tcp_relay_ports_config(config_t *cfg, uint16_t **tcp_relay_ports, int *tcp_relay_port_count) | ||
127 | { | ||
128 | const char *NAME_TCP_RELAY_PORTS = "tcp_relay_ports"; | ||
129 | |||
130 | *tcp_relay_port_count = 0; | ||
131 | |||
132 | config_setting_t *ports_array = config_lookup(cfg, NAME_TCP_RELAY_PORTS); | ||
133 | |||
134 | if (ports_array == NULL) { | ||
135 | syslog(LOG_WARNING, "No '%s' setting in the configuration file.\n", NAME_TCP_RELAY_PORTS); | ||
136 | syslog(LOG_WARNING, "Using default '%s':\n", NAME_TCP_RELAY_PORTS); | ||
137 | |||
138 | uint16_t default_ports[DEFAULT_TCP_RELAY_PORTS_COUNT] = {DEFAULT_TCP_RELAY_PORTS}; | ||
139 | |||
140 | int i; | ||
141 | |||
142 | for (i = 0; i < DEFAULT_TCP_RELAY_PORTS_COUNT; i ++) { | ||
143 | syslog(LOG_WARNING, "Port #%d: %u\n", i, default_ports[i]); | ||
144 | } | ||
145 | |||
146 | // similar procedure to the one of reading config file below | ||
147 | *tcp_relay_ports = malloc(DEFAULT_TCP_RELAY_PORTS_COUNT * sizeof(uint16_t)); | ||
148 | |||
149 | for (i = 0; i < DEFAULT_TCP_RELAY_PORTS_COUNT; i ++) { | ||
150 | |||
151 | (*tcp_relay_ports)[*tcp_relay_port_count] = default_ports[i]; | ||
152 | |||
153 | if ((*tcp_relay_ports)[*tcp_relay_port_count] < MIN_ALLOWED_PORT | ||
154 | || (*tcp_relay_ports)[*tcp_relay_port_count] > MAX_ALLOWED_PORT) { | ||
155 | syslog(LOG_WARNING, "Port #%d: Invalid port: %u, should be in [%d, %d]. Skipping.\n", i, | ||
156 | (*tcp_relay_ports)[*tcp_relay_port_count], MIN_ALLOWED_PORT, MAX_ALLOWED_PORT); | ||
157 | continue; | ||
158 | } | ||
159 | |||
160 | (*tcp_relay_port_count) ++; | ||
161 | } | ||
162 | |||
163 | // the loop above skips invalid ports, so we adjust the allocated memory size | ||
164 | *tcp_relay_ports = realloc(*tcp_relay_ports, (*tcp_relay_port_count) * sizeof(uint16_t)); | ||
165 | |||
166 | return; | ||
167 | } | ||
168 | |||
169 | if (config_setting_is_array(ports_array) == CONFIG_FALSE) { | ||
170 | syslog(LOG_WARNING, "'%s' setting should be an array. Array syntax: 'setting = [value1, value2, ...]'.\n", | ||
171 | NAME_TCP_RELAY_PORTS); | ||
172 | return; | ||
173 | } | ||
174 | |||
175 | int config_port_count = config_setting_length(ports_array); | ||
176 | |||
177 | if (config_port_count == 0) { | ||
178 | syslog(LOG_WARNING, "'%s' is empty.\n", NAME_TCP_RELAY_PORTS); | ||
179 | return; | ||
180 | } | ||
181 | |||
182 | *tcp_relay_ports = malloc(config_port_count * sizeof(uint16_t)); | ||
183 | |||
184 | int i; | ||
185 | |||
186 | for (i = 0; i < config_port_count; i ++) { | ||
187 | config_setting_t *elem = config_setting_get_elem(ports_array, i); | ||
188 | |||
189 | if (elem == NULL) { | ||
190 | // it's NULL if `ports_array` is not an array (we have that check ealier) or if `i` is out of range, which should not be | ||
191 | syslog(LOG_WARNING, "Port #%d: Something went wrong while parsing the port. Stopping reading ports.\n", i); | ||
192 | break; | ||
193 | } | ||
194 | |||
195 | if (config_setting_is_number(elem) == CONFIG_FALSE) { | ||
196 | syslog(LOG_WARNING, "Port #%d: Not a number. Skipping.\n", i); | ||
197 | continue; | ||
198 | } | ||
199 | |||
200 | (*tcp_relay_ports)[*tcp_relay_port_count] = config_setting_get_int(elem); | ||
201 | |||
202 | if ((*tcp_relay_ports)[*tcp_relay_port_count] < MIN_ALLOWED_PORT | ||
203 | || (*tcp_relay_ports)[*tcp_relay_port_count] > MAX_ALLOWED_PORT) { | ||
204 | syslog(LOG_WARNING, "Port #%d: Invalid port: %u, should be in [%d, %d]. Skipping.\n", i, | ||
205 | (*tcp_relay_ports)[*tcp_relay_port_count], MIN_ALLOWED_PORT, MAX_ALLOWED_PORT); | ||
206 | continue; | ||
207 | } | ||
208 | |||
209 | (*tcp_relay_port_count) ++; | ||
210 | } | ||
211 | |||
212 | // the loop above skips invalid ports, so we adjust the allocated memory size | ||
213 | *tcp_relay_ports = realloc(*tcp_relay_ports, (*tcp_relay_port_count) * sizeof(uint16_t)); | ||
214 | } | ||
215 | |||
216 | // Gets general config options | ||
217 | // | ||
218 | // Important: you are responsible for freeing `pid_file_path` and `keys_file_path` | ||
219 | // also, iff `tcp_relay_ports_count` > 0, then you are responsible for freeing `tcp_relay_ports` | ||
220 | // and also `motd` iff `enable_motd` is set | ||
221 | // | ||
222 | // returns 1 on success | ||
223 | // 0 on failure, doesn't modify any data pointed by arguments | ||
224 | |||
225 | int get_general_config(char *cfg_file_path, char **pid_file_path, char **keys_file_path, int *port, int *enable_ipv6, | ||
226 | int *enable_lan_discovery, int *enable_tcp_relay, uint16_t **tcp_relay_ports, int *tcp_relay_port_count, | ||
227 | int *enable_motd, char **motd) | ||
228 | { | ||
229 | config_t cfg; | ||
230 | |||
231 | const char *NAME_PORT = "port"; | ||
232 | const char *NAME_PID_FILE_PATH = "pid_file_path"; | ||
233 | const char *NAME_KEYS_FILE_PATH = "keys_file_path"; | ||
234 | const char *NAME_ENABLE_IPV6 = "enable_ipv6"; | ||
235 | const char *NAME_ENABLE_LAN_DISCOVERY = "enable_lan_discovery"; | ||
236 | const char *NAME_ENABLE_TCP_RELAY = "enable_tcp_relay"; | ||
237 | const char *NAME_ENABLE_MOTD = "enable_motd"; | ||
238 | const char *NAME_MOTD = "motd"; | ||
239 | |||
240 | config_init(&cfg); | ||
241 | |||
242 | // Read the file. If there is an error, report it and exit. | ||
243 | if (config_read_file(&cfg, cfg_file_path) == CONFIG_FALSE) { | ||
244 | syslog(LOG_ERR, "%s:%d - %s\n", config_error_file(&cfg), config_error_line(&cfg), config_error_text(&cfg)); | ||
245 | config_destroy(&cfg); | ||
246 | return 0; | ||
247 | } | ||
248 | |||
249 | // Get port | ||
250 | if (config_lookup_int(&cfg, NAME_PORT, port) == CONFIG_FALSE) { | ||
251 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_PORT); | ||
252 | syslog(LOG_WARNING, "Using default '%s': %d\n", NAME_PORT, DEFAULT_PORT); | ||
253 | *port = DEFAULT_PORT; | ||
254 | } | ||
255 | |||
256 | // Get PID file location | ||
257 | const char *tmp_pid_file; | ||
258 | |||
259 | if (config_lookup_string(&cfg, NAME_PID_FILE_PATH, &tmp_pid_file) == CONFIG_FALSE) { | ||
260 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_PID_FILE_PATH); | ||
261 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_PID_FILE_PATH, DEFAULT_PID_FILE_PATH); | ||
262 | tmp_pid_file = DEFAULT_PID_FILE_PATH; | ||
263 | } | ||
264 | |||
265 | *pid_file_path = malloc(strlen(tmp_pid_file) + 1); | ||
266 | strcpy(*pid_file_path, tmp_pid_file); | ||
267 | |||
268 | // Get keys file location | ||
269 | const char *tmp_keys_file; | ||
270 | |||
271 | if (config_lookup_string(&cfg, NAME_KEYS_FILE_PATH, &tmp_keys_file) == CONFIG_FALSE) { | ||
272 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_KEYS_FILE_PATH); | ||
273 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_KEYS_FILE_PATH, DEFAULT_KEYS_FILE_PATH); | ||
274 | tmp_keys_file = DEFAULT_KEYS_FILE_PATH; | ||
275 | } | ||
276 | |||
277 | *keys_file_path = malloc(strlen(tmp_keys_file) + 1); | ||
278 | strcpy(*keys_file_path, tmp_keys_file); | ||
279 | |||
280 | // Get IPv6 option | ||
281 | if (config_lookup_bool(&cfg, NAME_ENABLE_IPV6, enable_ipv6) == CONFIG_FALSE) { | ||
282 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_ENABLE_IPV6); | ||
283 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_ENABLE_IPV6, DEFAULT_ENABLE_IPV6 ? "true" : "false"); | ||
284 | *enable_ipv6 = DEFAULT_ENABLE_IPV6; | ||
285 | } | ||
286 | |||
287 | // Get LAN discovery option | ||
288 | if (config_lookup_bool(&cfg, NAME_ENABLE_LAN_DISCOVERY, enable_lan_discovery) == CONFIG_FALSE) { | ||
289 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_ENABLE_LAN_DISCOVERY); | ||
290 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_ENABLE_LAN_DISCOVERY, | ||
291 | DEFAULT_ENABLE_LAN_DISCOVERY ? "true" : "false"); | ||
292 | *enable_lan_discovery = DEFAULT_ENABLE_LAN_DISCOVERY; | ||
293 | } | ||
294 | |||
295 | // Get TCP relay option | ||
296 | if (config_lookup_bool(&cfg, NAME_ENABLE_TCP_RELAY, enable_tcp_relay) == CONFIG_FALSE) { | ||
297 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_ENABLE_TCP_RELAY); | ||
298 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_ENABLE_TCP_RELAY, | ||
299 | DEFAULT_ENABLE_TCP_RELAY ? "true" : "false"); | ||
300 | *enable_tcp_relay = DEFAULT_ENABLE_TCP_RELAY; | ||
301 | } | ||
302 | |||
303 | if (*enable_tcp_relay) { | ||
304 | parse_tcp_relay_ports_config(&cfg, tcp_relay_ports, tcp_relay_port_count); | ||
305 | } else { | ||
306 | *tcp_relay_port_count = 0; | ||
307 | } | ||
308 | |||
309 | // Get MOTD option | ||
310 | if (config_lookup_bool(&cfg, NAME_ENABLE_MOTD, enable_motd) == CONFIG_FALSE) { | ||
311 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_ENABLE_MOTD); | ||
312 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_ENABLE_MOTD, | ||
313 | DEFAULT_ENABLE_MOTD ? "true" : "false"); | ||
314 | *enable_motd = DEFAULT_ENABLE_MOTD; | ||
315 | } | ||
316 | |||
317 | if (*enable_motd) { | ||
318 | // Get MOTD | ||
319 | const char *tmp_motd; | ||
320 | |||
321 | if (config_lookup_string(&cfg, NAME_MOTD, &tmp_motd) == CONFIG_FALSE) { | ||
322 | syslog(LOG_WARNING, "No '%s' setting in configuration file.\n", NAME_MOTD); | ||
323 | syslog(LOG_WARNING, "Using default '%s': %s\n", NAME_MOTD, DEFAULT_MOTD); | ||
324 | tmp_motd = DEFAULT_MOTD; | ||
325 | } | ||
326 | |||
327 | size_t tmp_motd_length = strlen(tmp_motd) + 1; | ||
328 | size_t motd_length = tmp_motd_length > MAX_MOTD_LENGTH ? MAX_MOTD_LENGTH : tmp_motd_length; | ||
329 | *motd = malloc(motd_length); | ||
330 | strncpy(*motd, tmp_motd, motd_length); | ||
331 | (*motd)[motd_length - 1] = '\0'; | ||
332 | } | ||
333 | |||
334 | config_destroy(&cfg); | ||
335 | |||
336 | syslog(LOG_DEBUG, "Successfully read:\n"); | ||
337 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_PID_FILE_PATH, *pid_file_path); | ||
338 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_KEYS_FILE_PATH, *keys_file_path); | ||
339 | syslog(LOG_DEBUG, "'%s': %d\n", NAME_PORT, *port); | ||
340 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_ENABLE_IPV6, *enable_ipv6 ? "true" : "false"); | ||
341 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_ENABLE_LAN_DISCOVERY, *enable_lan_discovery ? "true" : "false"); | ||
342 | |||
343 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_ENABLE_TCP_RELAY, *enable_tcp_relay ? "true" : "false"); | ||
344 | |||
345 | // show info about tcp ports only if tcp relay is enabled | ||
346 | if (*enable_tcp_relay) { | ||
347 | if (*tcp_relay_port_count == 0) { | ||
348 | syslog(LOG_DEBUG, "No TCP ports could be read.\n"); | ||
349 | } else { | ||
350 | syslog(LOG_DEBUG, "Read %d TCP ports:\n", *tcp_relay_port_count); | ||
351 | int i; | ||
352 | |||
353 | for (i = 0; i < *tcp_relay_port_count; i ++) { | ||
354 | syslog(LOG_DEBUG, "Port #%d: %u\n", i, (*tcp_relay_ports)[i]); | ||
355 | } | ||
356 | } | ||
357 | } | ||
358 | |||
359 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_ENABLE_MOTD, *enable_motd ? "true" : "false"); | ||
360 | |||
361 | if (*enable_motd) { | ||
362 | syslog(LOG_DEBUG, "'%s': %s\n", NAME_MOTD, *motd); | ||
363 | } | ||
364 | |||
365 | return 1; | ||
366 | } | ||
367 | |||
368 | // Bootstraps nodes listed in the config file | ||
369 | // | ||
370 | // returns 1 on success, some or no bootstrap nodes were added | ||
371 | // 0 on failure, a error accured while parsing config file | ||
372 | |||
373 | int bootstrap_from_config(char *cfg_file_path, DHT *dht, int enable_ipv6) | ||
374 | { | ||
375 | const char *NAME_BOOTSTRAP_NODES = "bootstrap_nodes"; | ||
376 | |||
377 | const char *NAME_PUBLIC_KEY = "public_key"; | ||
378 | const char *NAME_PORT = "port"; | ||
379 | const char *NAME_ADDRESS = "address"; | ||
380 | |||
381 | config_t cfg; | ||
382 | |||
383 | config_init(&cfg); | ||
384 | |||
385 | if (config_read_file(&cfg, cfg_file_path) == CONFIG_FALSE) { | ||
386 | syslog(LOG_ERR, "%s:%d - %s\n", config_error_file(&cfg), config_error_line(&cfg), config_error_text(&cfg)); | ||
387 | config_destroy(&cfg); | ||
388 | return 0; | ||
389 | } | ||
390 | |||
391 | config_setting_t *node_list = config_lookup(&cfg, NAME_BOOTSTRAP_NODES); | ||
392 | |||
393 | if (node_list == NULL) { | ||
394 | syslog(LOG_WARNING, "No '%s' setting in the configuration file. Skipping bootstrapping.\n", NAME_BOOTSTRAP_NODES); | ||
395 | config_destroy(&cfg); | ||
396 | return 1; | ||
397 | } | ||
398 | |||
399 | if (config_setting_length(node_list) == 0) { | ||
400 | syslog(LOG_WARNING, "No bootstrap nodes found. Skipping bootstrapping.\n"); | ||
401 | config_destroy(&cfg); | ||
402 | return 1; | ||
403 | } | ||
404 | |||
405 | int bs_port; | ||
406 | const char *bs_address; | ||
407 | const char *bs_public_key; | ||
408 | |||
409 | config_setting_t *node; | ||
410 | |||
411 | int i = 0; | ||
412 | |||
413 | while (config_setting_length(node_list)) { | ||
414 | |||
415 | node = config_setting_get_elem(node_list, 0); | ||
416 | |||
417 | if (node == NULL) { | ||
418 | config_destroy(&cfg); | ||
419 | return 0; | ||
420 | } | ||
421 | |||
422 | // Check that all settings are present | ||
423 | if (config_setting_lookup_string(node, NAME_PUBLIC_KEY, &bs_public_key) == CONFIG_FALSE) { | ||
424 | syslog(LOG_WARNING, "Bootstrap node #%d: Couldn't find '%s' setting. Skipping the node.\n", i, NAME_PUBLIC_KEY); | ||
425 | goto next; | ||
426 | } | ||
427 | |||
428 | if (config_setting_lookup_int(node, NAME_PORT, &bs_port) == CONFIG_FALSE) { | ||
429 | syslog(LOG_WARNING, "Bootstrap node #%d: Couldn't find '%s' setting. Skipping the node.\n", i, NAME_PORT); | ||
430 | goto next; | ||
431 | } | ||
432 | |||
433 | if (config_setting_lookup_string(node, NAME_ADDRESS, &bs_address) == CONFIG_FALSE) { | ||
434 | syslog(LOG_WARNING, "Bootstrap node #%d: Couldn't find '%s' setting. Skipping the node.\n", i, NAME_ADDRESS); | ||
435 | goto next; | ||
436 | } | ||
437 | |||
438 | // Process settings | ||
439 | if (strlen(bs_public_key) != crypto_box_PUBLICKEYBYTES * 2) { | ||
440 | syslog(LOG_WARNING, "Bootstrap node #%d: Invalid '%s': %s. Skipping the node.\n", i, NAME_PUBLIC_KEY, | ||
441 | bs_public_key); | ||
442 | goto next; | ||
443 | } | ||
444 | |||
445 | if (bs_port < MIN_ALLOWED_PORT || bs_port > MAX_ALLOWED_PORT) { | ||
446 | syslog(LOG_WARNING, "Bootstrap node #%d: Invalid '%s': %d, should be in [%d, %d]. Skipping the node.\n", i, NAME_PORT, | ||
447 | bs_port, MIN_ALLOWED_PORT, MAX_ALLOWED_PORT); | ||
448 | goto next; | ||
449 | } | ||
450 | |||
451 | uint8_t *bs_public_key_bin = hex_string_to_bin((char *)bs_public_key); | ||
452 | const int address_resolved = DHT_bootstrap_from_address(dht, bs_address, enable_ipv6, htons(bs_port), | ||
453 | bs_public_key_bin); | ||
454 | free(bs_public_key_bin); | ||
455 | |||
456 | if (!address_resolved) { | ||
457 | syslog(LOG_WARNING, "Bootstrap node #%d: Invalid '%s': %s. Skipping the node.\n", i, NAME_ADDRESS, bs_address); | ||
458 | goto next; | ||
459 | } | ||
460 | |||
461 | syslog(LOG_DEBUG, "Successfully added bootstrap node #%d: %s:%d %s\n", i, bs_address, bs_port, bs_public_key); | ||
462 | |||
463 | next: | ||
464 | // config_setting_lookup_string() allocates string inside and doesn't allow us to free it direcly | ||
465 | // though it's freed when the element is removed, so we free it right away in order to keep memory | ||
466 | // consumption minimal | ||
467 | config_setting_remove_elem(node_list, 0); | ||
468 | i++; | ||
469 | } | ||
470 | |||
471 | config_destroy(&cfg); | ||
472 | |||
473 | return 1; | ||
474 | } | ||
475 | |||
476 | // Prints public key | ||
477 | |||
478 | void print_public_key(uint8_t *public_key) | ||
479 | { | ||
480 | char buffer[2 * crypto_box_PUBLICKEYBYTES + 1]; | ||
481 | int index = 0; | ||
482 | |||
483 | int i; | ||
484 | |||
485 | for (i = 0; i < crypto_box_PUBLICKEYBYTES; i++) { | ||
486 | index += sprintf(buffer + index, "%02hhX", public_key[i]); | ||
487 | } | ||
488 | |||
489 | syslog(LOG_INFO, "Public Key: %s\n", buffer); | ||
490 | |||
491 | return; | ||
492 | } | ||
493 | |||
494 | int main(int argc, char *argv[]) | ||
495 | { | ||
496 | openlog(DAEMON_NAME, LOG_NOWAIT | LOG_PID, LOG_DAEMON); | ||
497 | |||
498 | syslog(LOG_INFO, "Running \"%s\" version %lu.\n", DAEMON_NAME, DAEMON_VERSION_NUMBER); | ||
499 | |||
500 | if (argc < 2) { | ||
501 | syslog(LOG_ERR, "Please specify a path to a configuration file as the first argument. Exiting.\n"); | ||
502 | return 1; | ||
503 | } | ||
504 | |||
505 | char *cfg_file_path = argv[1]; | ||
506 | char *pid_file_path, *keys_file_path; | ||
507 | int port; | ||
508 | int enable_ipv6; | ||
509 | int enable_lan_discovery; | ||
510 | int enable_tcp_relay; | ||
511 | uint16_t *tcp_relay_ports; | ||
512 | int tcp_relay_port_count; | ||
513 | int enable_motd; | ||
514 | char *motd; | ||
515 | |||
516 | if (get_general_config(cfg_file_path, &pid_file_path, &keys_file_path, &port, &enable_ipv6, &enable_lan_discovery, | ||
517 | &enable_tcp_relay, &tcp_relay_ports, &tcp_relay_port_count, &enable_motd, &motd)) { | ||
518 | syslog(LOG_DEBUG, "General config read successfully\n"); | ||
519 | } else { | ||
520 | syslog(LOG_ERR, "Couldn't read config file: %s. Exiting.\n", cfg_file_path); | ||
521 | return 1; | ||
522 | } | ||
523 | |||
524 | if (port < MIN_ALLOWED_PORT || port > MAX_ALLOWED_PORT) { | ||
525 | syslog(LOG_ERR, "Invalid port: %d, should be in [%d, %d]. Exiting.\n", port, MIN_ALLOWED_PORT, MAX_ALLOWED_PORT); | ||
526 | return 1; | ||
527 | } | ||
528 | |||
529 | // Check if the PID file exists | ||
530 | FILE *pid_file; | ||
531 | |||
532 | if (pid_file = fopen(pid_file_path, "r")) { | ||
533 | syslog(LOG_ERR, "Another instance of the daemon is already running, PID file %s exists.\n", pid_file_path); | ||
534 | fclose(pid_file); | ||
535 | } | ||
536 | |||
537 | IP ip; | ||
538 | ip_init(&ip, enable_ipv6); | ||
539 | |||
540 | DHT *dht = new_DHT(new_networking(ip, port)); | ||
541 | |||
542 | if (dht == NULL) { | ||
543 | syslog(LOG_ERR, "Couldn't initialize Tox DHT instance. Exiting.\n"); | ||
544 | return 1; | ||
545 | } | ||
546 | |||
547 | Onion *onion = new_onion(dht); | ||
548 | Onion_Announce *onion_a = new_onion_announce(dht); | ||
549 | |||
550 | if (!(onion && onion_a)) { | ||
551 | syslog(LOG_ERR, "Couldn't initialize Tox Onion. Exiting.\n"); | ||
552 | return 1; | ||
553 | } | ||
554 | |||
555 | if (enable_motd) { | ||
556 | if (bootstrap_set_callbacks(dht->net, DAEMON_VERSION_NUMBER, (uint8_t *)motd, strlen(motd) + 1) == 0) { | ||
557 | syslog(LOG_DEBUG, "Set MOTD successfully.\n"); | ||
558 | } else { | ||
559 | syslog(LOG_ERR, "Couldn't set MOTD: %s. Exiting.\n", motd); | ||
560 | return 1; | ||
561 | } | ||
562 | |||
563 | free(motd); | ||
564 | } | ||
565 | |||
566 | if (manage_keys(dht, keys_file_path)) { | ||
567 | syslog(LOG_DEBUG, "Keys are managed successfully.\n"); | ||
568 | } else { | ||
569 | syslog(LOG_ERR, "Couldn't read/write: %s. Exiting.\n", keys_file_path); | ||
570 | return 1; | ||
571 | } | ||
572 | |||
573 | TCP_Server *tcp_server = NULL; | ||
574 | |||
575 | if (enable_tcp_relay) { | ||
576 | if (tcp_relay_port_count == 0) { | ||
577 | syslog(LOG_ERR, "No TCP relay ports read. Exiting.\n"); | ||
578 | return 1; | ||
579 | } | ||
580 | |||
581 | tcp_server = new_TCP_server(enable_ipv6, tcp_relay_port_count, tcp_relay_ports, dht->self_public_key, | ||
582 | dht->self_secret_key, onion); | ||
583 | |||
584 | // tcp_relay_port_count != 0 at this point | ||
585 | free(tcp_relay_ports); | ||
586 | |||
587 | if (tcp_server != NULL) { | ||
588 | syslog(LOG_DEBUG, "Initialized Tox TCP server successfully.\n"); | ||
589 | } else { | ||
590 | syslog(LOG_ERR, "Couldn't initialize Tox TCP server. Exiting.\n"); | ||
591 | return 1; | ||
592 | } | ||
593 | } | ||
594 | |||
595 | if (bootstrap_from_config(cfg_file_path, dht, enable_ipv6)) { | ||
596 | syslog(LOG_DEBUG, "List of bootstrap nodes read successfully.\n"); | ||
597 | } else { | ||
598 | syslog(LOG_ERR, "Couldn't read list of bootstrap nodes in %s. Exiting.\n", cfg_file_path); | ||
599 | return 1; | ||
600 | } | ||
601 | |||
602 | print_public_key(dht->self_public_key); | ||
603 | |||
604 | // Write the PID file | ||
605 | FILE *pidf = fopen(pid_file_path, "a+"); | ||
606 | |||
607 | if (pidf == NULL) { | ||
608 | syslog(LOG_ERR, "Couldn't open the PID file for writing: %s. Exiting.\n", pid_file_path); | ||
609 | return 1; | ||
610 | } | ||
611 | |||
612 | free(pid_file_path); | ||
613 | free(keys_file_path); | ||
614 | |||
615 | // Fork off from the parent process | ||
616 | pid_t pid = fork(); | ||
617 | |||
618 | if (pid > 0) { | ||
619 | fprintf(pidf, "%d ", pid); | ||
620 | fclose(pidf); | ||
621 | syslog(LOG_DEBUG, "Forked successfully: PID: %d.\n", pid); | ||
622 | return 0; | ||
623 | } else { | ||
624 | fclose(pidf); | ||
625 | } | ||
626 | |||
627 | if (pid < 0) { | ||
628 | syslog(LOG_ERR, "Forking failed. Exiting.\n"); | ||
629 | return 1; | ||
630 | } | ||
631 | |||
632 | // Change the file mode mask | ||
633 | umask(0); | ||
634 | |||
635 | // Create a new SID for the child process | ||
636 | if (setsid() < 0) { | ||
637 | syslog(LOG_ERR, "SID creation failure. Exiting.\n"); | ||
638 | return 1; | ||
639 | } | ||
640 | |||
641 | // Change the current working directory | ||
642 | if ((chdir("/")) < 0) { | ||
643 | syslog(LOG_ERR, "Couldn't change working directory to '/'. Exiting.\n"); | ||
644 | return 1; | ||
645 | } | ||
646 | |||
647 | // Go quiet | ||
648 | close(STDOUT_FILENO); | ||
649 | close(STDIN_FILENO); | ||
650 | close(STDERR_FILENO); | ||
651 | |||
652 | uint64_t last_LANdiscovery = 0; | ||
653 | uint16_t htons_port = htons(port); | ||
654 | |||
655 | int waiting_for_dht_connection = 1; | ||
656 | |||
657 | if (enable_lan_discovery) { | ||
658 | LANdiscovery_init(dht); | ||
659 | syslog(LOG_DEBUG, "Initialized LAN discovery.\n"); | ||
660 | } | ||
661 | |||
662 | while (1) { | ||
663 | do_DHT(dht); | ||
664 | |||
665 | if (enable_lan_discovery && is_timeout(last_LANdiscovery, LAN_DISCOVERY_INTERVAL)) { | ||
666 | send_LANdiscovery(htons_port, dht); | ||
667 | last_LANdiscovery = unix_time(); | ||
668 | } | ||
669 | |||
670 | if (enable_tcp_relay) { | ||
671 | do_TCP_server(tcp_server); | ||
672 | } | ||
673 | |||
674 | networking_poll(dht->net); | ||
675 | |||
676 | if (waiting_for_dht_connection && DHT_isconnected(dht)) { | ||
677 | syslog(LOG_DEBUG, "Connected to other bootstrap node successfully.\n"); | ||
678 | waiting_for_dht_connection = 0; | ||
679 | } | ||
680 | |||
681 | sleep; | ||
682 | } | ||
683 | |||
684 | return 1; | ||
685 | } | ||