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Commit | Line | Data |
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39877197 | 1 | #include <signal.h> |
6e13d0a5 MT |
2 | #include <stdio.h> |
3 | #include <string.h> | |
4 | #include <unistd.h> | |
5 | #include <stdlib.h> | |
6 | #include <sys/types.h> | |
3d1fbbb0 MT |
7 | #include <arpa/inet.h> |
8 | #include <netinet/in.h> | |
6e13d0a5 MT |
9 | #include <fcntl.h> |
10 | #include "setuid.h" | |
11 | #include "libsmooth.h" | |
12 | ||
c894a342 | 13 | #define noovpndebug |
6e13d0a5 MT |
14 | |
15 | // global vars | |
16 | struct keyvalue *kv = NULL; | |
17 | FILE *ifacefile = NULL; | |
18 | ||
19 | char redif[STRING_SIZE]; | |
20 | char blueif[STRING_SIZE]; | |
21 | char orangeif[STRING_SIZE]; | |
22 | char enablered[STRING_SIZE] = "off"; | |
23 | char enableblue[STRING_SIZE] = "off"; | |
24 | char enableorange[STRING_SIZE] = "off"; | |
25 | ||
26 | // consts | |
27 | char OVPNRED[STRING_SIZE] = "OVPN"; | |
28 | char OVPNBLUE[STRING_SIZE] = "OVPN_BLUE_"; | |
29 | char OVPNORANGE[STRING_SIZE] = "OVPN_ORANGE_"; | |
3d1fbbb0 MT |
30 | char OVPNNAT[STRING_SIZE] = "OVPNNAT"; |
31 | char WRAPPERVERSION[STRING_SIZE] = "ipfire-2.2.3"; | |
6925b8ef AF |
32 | |
33 | struct connection_struct { | |
34 | char name[STRING_SIZE]; | |
91a0a221 | 35 | char type[STRING_SIZE]; |
6925b8ef | 36 | char proto[STRING_SIZE]; |
99b01b84 | 37 | char status[STRING_SIZE]; |
3d1fbbb0 MT |
38 | char local_subnet[STRING_SIZE]; |
39 | char transfer_subnet[STRING_SIZE]; | |
40 | char role[STRING_SIZE]; | |
6925b8ef AF |
41 | int port; |
42 | struct connection_struct *next; | |
43 | }; | |
44 | ||
45 | typedef struct connection_struct connection; | |
6e13d0a5 MT |
46 | |
47 | void exithandler(void) | |
48 | { | |
49 | if(kv) | |
50 | freekeyvalues(kv); | |
51 | if (ifacefile) | |
52 | fclose(ifacefile); | |
53 | } | |
54 | ||
55 | void usage(void) | |
56 | { | |
57 | #ifdef ovpndebug | |
07081137 | 58 | printf("Wrapper for OpenVPN %s-debug\n", WRAPPERVERSION); |
6e13d0a5 | 59 | #else |
07081137 | 60 | printf("Wrapper for OpenVPN %s\n", WRAPPERVERSION); |
6e13d0a5 MT |
61 | #endif |
62 | printf("openvpnctrl <option>\n"); | |
63 | printf(" Valid options are:\n"); | |
64 | printf(" -s --start\n"); | |
65 | printf(" starts OpenVPN (implicitly creates chains and firewall rules)\n"); | |
66 | printf(" -k --kill\n"); | |
67 | printf(" kills/stops OpenVPN\n"); | |
68 | printf(" -r --restart\n"); | |
69 | printf(" restarts OpenVPN (implicitly creates chains and firewall rules)\n"); | |
64f0c354 MT |
70 | printf(" -sn2n --start-net-2-net\n"); |
71 | printf(" starts all net2net connections\n"); | |
72 | printf(" you may pass a connection name to the switch to only start a specific one\n"); | |
73 | printf(" -kn2n --kill-net-2-net\n"); | |
74 | printf(" kills all net2net connections\n"); | |
75 | printf(" you may pass a connection name to the switch to only start a specific one\n"); | |
6e13d0a5 MT |
76 | printf(" -d --display\n"); |
77 | printf(" displays OpenVPN status to syslog\n"); | |
78 | printf(" -fwr --firewall-rules\n"); | |
79 | printf(" removes current OpenVPN chains and rules and resets them according to the config\n"); | |
80 | printf(" -sdo --start-daemon-only\n"); | |
afabe9f7 | 81 | printf(" starts OpenVPN daemon only\n"); |
6e13d0a5 MT |
82 | printf(" -ccr --create-chains-and-rules\n"); |
83 | printf(" creates chains and rules for OpenVPN\n"); | |
84 | printf(" -dcr --delete-chains-and-rules\n"); | |
85 | printf(" removes all chains for OpenVPN\n"); | |
86 | exit(1); | |
87 | } | |
88 | ||
6925b8ef AF |
89 | connection *getConnections() { |
90 | FILE *fp = NULL; | |
91 | ||
92 | if (!(fp = fopen(CONFIG_ROOT "/ovpn/ovpnconfig", "r"))) { | |
93 | fprintf(stderr, "Could not open openvpn n2n configuration file.\n"); | |
94 | exit(1); | |
95 | } | |
96 | ||
97 | char line[STRING_SIZE] = ""; | |
d4f2fb97 MT |
98 | char result[STRING_SIZE] = ""; |
99 | char *resultptr; | |
6925b8ef AF |
100 | int count; |
101 | connection *conn_first = NULL; | |
102 | connection *conn_last = NULL; | |
103 | connection *conn_curr; | |
104 | ||
105 | while ((fgets(line, STRING_SIZE, fp) != NULL)) { | |
106 | if (line[strlen(line) - 1] == '\n') | |
107 | line[strlen(line) - 1] = '\0'; | |
108 | ||
109 | conn_curr = (connection *)malloc(sizeof(connection)); | |
110 | memset(conn_curr, 0, sizeof(connection)); | |
111 | ||
112 | if (conn_first == NULL) { | |
113 | conn_first = conn_curr; | |
114 | } else { | |
115 | conn_last->next = conn_curr; | |
116 | } | |
117 | conn_last = conn_curr; | |
118 | ||
119 | count = 0; | |
d4f2fb97 MT |
120 | char *lineptr = &line; |
121 | while (1) { | |
122 | if (*lineptr == NULL) | |
123 | break; | |
124 | ||
125 | resultptr = result; | |
126 | while (*lineptr != NULL) { | |
127 | if (*lineptr == ',') { | |
128 | lineptr++; | |
129 | break; | |
130 | } | |
131 | *resultptr++ = *lineptr++; | |
132 | } | |
133 | *resultptr = '\0'; | |
134 | ||
99b01b84 MT |
135 | if (count == 1) { |
136 | strcpy(conn_curr->status, result); | |
137 | } else if (count == 2) { | |
6925b8ef | 138 | strcpy(conn_curr->name, result); |
91a0a221 MT |
139 | } else if (count == 4) { |
140 | strcpy(conn_curr->type, result); | |
3d1fbbb0 MT |
141 | } else if (count == 7) { |
142 | strcpy(conn_curr->role, result); | |
143 | } else if (count == 9) { | |
144 | strcpy(conn_curr->local_subnet, result); | |
145 | } else if (count == 28) { | |
146 | strcpy(conn_curr->transfer_subnet, result); | |
d4f2fb97 | 147 | } else if (count == 29) { |
6925b8ef | 148 | strcpy(conn_curr->proto, result); |
d4f2fb97 | 149 | } else if (count == 30) { |
6925b8ef AF |
150 | conn_curr->port = atoi(result); |
151 | } | |
152 | ||
6925b8ef AF |
153 | count++; |
154 | } | |
155 | } | |
156 | ||
157 | fclose(fp); | |
158 | ||
159 | return conn_first; | |
160 | } | |
161 | ||
80ca8bd0 MT |
162 | int readPidFile(const char *pidfile) { |
163 | FILE *fp = fopen(pidfile, "r"); | |
164 | if (fp == NULL) { | |
165 | fprintf(stderr, "PID file not found: '%s'\n", pidfile); | |
166 | exit(1); | |
167 | } | |
168 | ||
169 | int pid = 0; | |
170 | fscanf(fp, "%d", &pid); | |
171 | fclose(fp); | |
172 | ||
173 | return pid; | |
174 | } | |
175 | ||
6e13d0a5 MT |
176 | void ovpnInit(void) { |
177 | ||
178 | // Read OpenVPN configuration | |
179 | kv = initkeyvalues(); | |
180 | if (!readkeyvalues(kv, CONFIG_ROOT "/ovpn/settings")) { | |
181 | fprintf(stderr, "Cannot read ovpn settings\n"); | |
182 | exit(1); | |
183 | } | |
184 | ||
185 | if (!findkey(kv, "ENABLED", enablered)) { | |
186 | fprintf(stderr, "Cannot read ENABLED\n"); | |
187 | exit(1); | |
188 | } | |
189 | ||
190 | if (!findkey(kv, "ENABLED_BLUE", enableblue)){ | |
191 | fprintf(stderr, "Cannot read ENABLED_BLUE\n"); | |
192 | exit(1); | |
193 | } | |
194 | ||
195 | if (!findkey(kv, "ENABLED_ORANGE", enableorange)){ | |
196 | fprintf(stderr, "Cannot read ENABLED_ORANGE\n"); | |
197 | exit(1); | |
198 | } | |
199 | freekeyvalues(kv); | |
200 | ||
201 | // read interface settings | |
202 | ||
203 | // details for the red int | |
204 | memset(redif, 0, STRING_SIZE); | |
205 | if ((ifacefile = fopen(CONFIG_ROOT "/red/iface", "r"))) | |
206 | { | |
207 | if (fgets(redif, STRING_SIZE, ifacefile)) | |
208 | { | |
209 | if (redif[strlen(redif) - 1] == '\n') | |
210 | redif[strlen(redif) - 1] = '\0'; | |
211 | } | |
212 | fclose (ifacefile); | |
213 | ifacefile = NULL; | |
214 | ||
215 | if (!VALID_DEVICE(redif)) | |
216 | { | |
217 | memset(redif, 0, STRING_SIZE); | |
218 | } | |
219 | } | |
220 | ||
221 | kv=initkeyvalues(); | |
222 | if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings")) | |
223 | { | |
224 | fprintf(stderr, "Cannot read ethernet settings\n"); | |
225 | exit(1); | |
226 | } | |
227 | ||
228 | if (strcmp(enableblue, "on")==0){ | |
229 | if (!findkey(kv, "BLUE_DEV", blueif)){ | |
230 | fprintf(stderr, "Cannot read BLUE_DEV\n"); | |
231 | exit(1); | |
232 | } | |
233 | } | |
234 | if (strcmp(enableorange, "on")==0){ | |
235 | if (!findkey(kv, "ORANGE_DEV", orangeif)){ | |
236 | fprintf(stderr, "Cannot read ORNAGE_DEV\n"); | |
237 | exit(1); | |
238 | } | |
239 | } | |
240 | freekeyvalues(kv); | |
241 | } | |
242 | ||
243 | void executeCommand(char *command) { | |
244 | #ifdef ovpndebug | |
245 | printf(strncat(command, "\n", 2)); | |
246 | #endif | |
247 | safe_system(strncat(command, " >/dev/null 2>&1", 17)); | |
248 | } | |
249 | ||
250 | void setChainRules(char *chain, char *interface, char *protocol, char *port) | |
251 | { | |
252 | char str[STRING_SIZE]; | |
07081137 | 253 | |
6e13d0a5 MT |
254 | sprintf(str, "/sbin/iptables -A %sINPUT -i %s -p %s --dport %s -j ACCEPT", chain, interface, protocol, port); |
255 | executeCommand(str); | |
256 | sprintf(str, "/sbin/iptables -A %sINPUT -i tun+ -j ACCEPT", chain); | |
257 | executeCommand(str); | |
258 | sprintf(str, "/sbin/iptables -A %sFORWARD -i tun+ -j ACCEPT", chain); | |
259 | executeCommand(str); | |
260 | } | |
261 | ||
262 | void flushChain(char *chain) { | |
263 | char str[STRING_SIZE]; | |
264 | ||
265 | sprintf(str, "/sbin/iptables -F %sINPUT", chain); | |
266 | executeCommand(str); | |
267 | sprintf(str, "/sbin/iptables -F %sFORWARD", chain); | |
268 | executeCommand(str); | |
269 | safe_system(str); | |
270 | } | |
271 | ||
3d1fbbb0 MT |
272 | void flushChainNAT(char *chain) { |
273 | char str[STRING_SIZE]; | |
274 | ||
275 | sprintf(str, "/sbin/iptables -t nat -F %s", chain); | |
276 | executeCommand(str); | |
277 | } | |
278 | ||
6e13d0a5 MT |
279 | void deleteChainReference(char *chain) { |
280 | char str[STRING_SIZE]; | |
281 | ||
282 | sprintf(str, "/sbin/iptables -D INPUT -j %sINPUT", chain); | |
283 | executeCommand(str); | |
284 | safe_system(str); | |
285 | sprintf(str, "/sbin/iptables -D FORWARD -j %sFORWARD", chain); | |
286 | executeCommand(str); | |
287 | safe_system(str); | |
288 | } | |
289 | ||
290 | void deleteChain(char *chain) { | |
291 | char str[STRING_SIZE]; | |
292 | ||
293 | sprintf(str, "/sbin/iptables -X %sINPUT", chain); | |
294 | executeCommand(str); | |
295 | sprintf(str, "/sbin/iptables -X %sFORWARD", chain); | |
296 | executeCommand(str); | |
297 | } | |
298 | ||
299 | void deleteAllChains(void) { | |
300 | // not an elegant solution, but to avoid timing problems with undeleted chain references | |
301 | deleteChainReference(OVPNRED); | |
302 | deleteChainReference(OVPNBLUE); | |
303 | deleteChainReference(OVPNORANGE); | |
304 | flushChain(OVPNRED); | |
305 | flushChain(OVPNBLUE); | |
306 | flushChain(OVPNORANGE); | |
307 | deleteChain(OVPNRED); | |
308 | deleteChain(OVPNBLUE); | |
309 | deleteChain(OVPNORANGE); | |
310 | } | |
311 | ||
312 | void createChainReference(char *chain) { | |
313 | char str[STRING_SIZE]; | |
314 | sprintf(str, "/sbin/iptables -I INPUT %s -j %sINPUT", "14", chain); | |
315 | executeCommand(str); | |
316 | sprintf(str, "/sbin/iptables -I FORWARD %s -j %sFORWARD", "12", chain); | |
317 | executeCommand(str); | |
318 | } | |
319 | ||
320 | void createChain(char *chain) { | |
321 | char str[STRING_SIZE]; | |
322 | sprintf(str, "/sbin/iptables -N %sINPUT", chain); | |
323 | executeCommand(str); | |
324 | sprintf(str, "/sbin/iptables -N %sFORWARD", chain); | |
325 | executeCommand(str); | |
326 | } | |
327 | ||
328 | void createAllChains(void) { | |
858d8d90 MT |
329 | // create chain and chain references |
330 | if (!strcmp(enableorange, "on")) { | |
331 | if (strlen(orangeif)) { | |
332 | createChain(OVPNORANGE); | |
333 | createChainReference(OVPNORANGE); | |
334 | } else { | |
335 | fprintf(stderr, "OpenVPN enabled on orange but no orange interface found\n"); | |
336 | //exit(1); | |
6e13d0a5 | 337 | } |
858d8d90 MT |
338 | } |
339 | ||
340 | if (!strcmp(enableblue, "on")) { | |
341 | if (strlen(blueif)) { | |
342 | createChain(OVPNBLUE); | |
343 | createChainReference(OVPNBLUE); | |
344 | } else { | |
345 | fprintf(stderr, "OpenVPN enabled on blue but no blue interface found\n"); | |
346 | //exit(1); | |
6e13d0a5 | 347 | } |
858d8d90 MT |
348 | } |
349 | ||
350 | if (!strcmp(enablered, "on")) { | |
351 | if (strlen(redif)) { | |
352 | createChain(OVPNRED); | |
353 | createChainReference(OVPNRED); | |
354 | } else { | |
355 | fprintf(stderr, "OpenVPN enabled on red but no red interface found\n"); | |
356 | //exit(1); | |
6e13d0a5 MT |
357 | } |
358 | } | |
359 | } | |
360 | ||
3d1fbbb0 MT |
361 | char* calcTransferNetAddress(const connection* conn) { |
362 | char *address = strdup(conn->transfer_subnet); | |
363 | address = strsep(&address, "/"); | |
364 | ||
365 | struct in_addr address_info; | |
366 | if (!inet_aton(address, &address_info)) { | |
367 | goto ERROR; | |
368 | } | |
369 | ||
370 | if (strcmp(conn->role, "server")) { | |
371 | address_info.s_addr += 1 << 24; | |
372 | } else if (strcmp(conn->role, "client")) { | |
373 | address_info.s_addr += 2 << 24; | |
374 | } else { | |
375 | goto ERROR; | |
376 | } | |
377 | ||
378 | address = inet_ntoa(address_info); | |
379 | return address; | |
380 | ||
381 | ERROR: | |
382 | free(address); | |
383 | return NULL; | |
384 | } | |
385 | ||
386 | char* getLocalSubnetAddress(const connection* conn) { | |
387 | kv = initkeyvalues(); | |
388 | if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings")) { | |
389 | fprintf(stderr, "Cannot read ethernet settings\n"); | |
390 | exit(1); | |
391 | } | |
392 | ||
393 | const char *zones[] = {"GREEN", "BLUE", "ORANGE", NULL}; | |
394 | char *zone = NULL; | |
395 | ||
396 | // Get net address of the local openvpn subnet. | |
397 | char *subnetmask = strdup(conn->local_subnet); | |
398 | char *address = strsep(&subnetmask, "/"); | |
399 | ||
400 | if ((address == NULL) || (subnetmask == NULL)) { | |
401 | goto ERROR; | |
402 | } | |
403 | ||
404 | in_addr_t _address = inet_addr(address); | |
405 | in_addr_t _subnetmask = inet_addr(subnetmask); | |
406 | ||
407 | in_addr_t _netaddr = (_address & _subnetmask); | |
408 | in_addr_t _broadcast = (_address | ~_subnetmask); | |
409 | ||
410 | char zone_address_key[STRING_SIZE]; | |
411 | char zone_address[STRING_SIZE]; | |
412 | in_addr_t zone_addr; | |
413 | ||
414 | int i = 0; | |
415 | while (zones[i]) { | |
416 | zone = zones[i++]; | |
417 | snprintf(zone_address_key, STRING_SIZE, "%s_ADDRESS", zone); | |
418 | ||
419 | if (!findkey(kv, zone_address_key, zone_address)) | |
420 | continue; | |
421 | ||
422 | zone_addr = inet_addr(zone_address); | |
423 | if ((zone_addr > _netaddr) && (zone_addr < _broadcast)) { | |
424 | freekeyvalues(kv); | |
425 | ||
426 | return strdup(zone_address); | |
427 | } | |
428 | } | |
429 | ||
430 | ERROR: | |
431 | freekeyvalues(kv); | |
432 | return NULL; | |
433 | } | |
434 | ||
6e13d0a5 MT |
435 | void setFirewallRules(void) { |
436 | char protocol[STRING_SIZE] = ""; | |
437 | char dport[STRING_SIZE] = ""; | |
438 | char dovpnip[STRING_SIZE] = ""; | |
439 | ||
6e13d0a5 MT |
440 | kv = initkeyvalues(); |
441 | if (!readkeyvalues(kv, CONFIG_ROOT "/ovpn/settings")) | |
442 | { | |
443 | fprintf(stderr, "Cannot read ovpn settings\n"); | |
444 | exit(1); | |
445 | } | |
446 | ||
447 | /* we got one device, so lets proceed further */ | |
448 | if (!findkey(kv, "DDEST_PORT", dport)){ | |
449 | fprintf(stderr, "Cannot read DDEST_PORT\n"); | |
450 | exit(1); | |
451 | } | |
452 | ||
453 | if (!findkey(kv, "DPROTOCOL", protocol)){ | |
454 | fprintf(stderr, "Cannot read DPROTOCOL\n"); | |
455 | exit(1); | |
456 | } | |
457 | ||
458 | if (!findkey(kv, "VPN_IP", dovpnip)){ | |
459 | fprintf(stderr, "Cannot read VPN_IP\n"); | |
460 | // exit(1); step further as we don't need an ip | |
461 | } | |
462 | freekeyvalues(kv); | |
463 | ||
07081137 MT |
464 | // Flush all chains. |
465 | flushChain(OVPNRED); | |
466 | flushChain(OVPNBLUE); | |
467 | flushChain(OVPNORANGE); | |
3d1fbbb0 | 468 | flushChainNAT(OVPNNAT); |
07081137 | 469 | |
6e13d0a5 MT |
470 | // set firewall rules |
471 | if (!strcmp(enablered, "on") && strlen(redif)) | |
472 | setChainRules(OVPNRED, redif, protocol, dport); | |
473 | if (!strcmp(enableblue, "on") && strlen(blueif)) | |
474 | setChainRules(OVPNBLUE, blueif, protocol, dport); | |
475 | if (!strcmp(enableorange, "on") && strlen(orangeif)) | |
476 | setChainRules(OVPNORANGE, orangeif, protocol, dport); | |
6925b8ef | 477 | |
91a0a221 MT |
478 | // read connection configuration |
479 | connection *conn = getConnections(); | |
480 | ||
6925b8ef | 481 | // set firewall rules for n2n connections |
91a0a221 | 482 | char command[STRING_SIZE]; |
3d1fbbb0 MT |
483 | char *local_subnet_address = NULL; |
484 | char *transfer_subnet_address = NULL; | |
7d653d51 | 485 | while (conn != NULL) { |
91a0a221 MT |
486 | if (strcmp(conn->type, "net") == 0) { |
487 | sprintf(command, "/sbin/iptables -A %sINPUT -i %s -p %s --dport %d -j ACCEPT", | |
488 | OVPNRED, redif, conn->proto, conn->port); | |
489 | executeCommand(command); | |
3d1fbbb0 MT |
490 | |
491 | local_subnet_address = getLocalSubnetAddress(conn); | |
492 | transfer_subnet_address = calcTransferNetAddress(conn); | |
493 | ||
494 | snprintf(command, STRING_SIZE, "/sbin/iptables -t nat -A %s -s %s -j SNAT --to-source %s", | |
495 | OVPNNAT, transfer_subnet_address, local_subnet_address); | |
496 | executeCommand(command); | |
91a0a221 MT |
497 | } |
498 | ||
6925b8ef AF |
499 | conn = conn->next; |
500 | } | |
6e13d0a5 MT |
501 | } |
502 | ||
503 | void stopDaemon(void) { | |
504 | char command[STRING_SIZE]; | |
505 | ||
2bcff894 | 506 | int pid = readPidFile("/var/run/openvpn.pid"); |
80ca8bd0 | 507 | if (!pid > 0) { |
2bcff894 MT |
508 | exit(1); |
509 | } | |
510 | ||
511 | fprintf(stderr, "Killing PID %d.\n", pid); | |
512 | kill(pid, SIGTERM); | |
513 | ||
6e13d0a5 MT |
514 | snprintf(command, STRING_SIZE - 1, "/bin/rm -f /var/run/openvpn.pid"); |
515 | executeCommand(command); | |
516 | } | |
517 | ||
518 | void startDaemon(void) { | |
519 | char command[STRING_SIZE]; | |
520 | ||
521 | if (!((strcmp(enablered, "on")==0) || (strcmp(enableblue, "on")==0) || (strcmp(enableorange, "on")==0))){ | |
522 | fprintf(stderr, "OpenVPN is not enabled on any interface\n"); | |
523 | exit(1); | |
524 | } else { | |
7d3af7f7 MT |
525 | snprintf(command, STRING_SIZE-1, "/sbin/modprobe tun"); |
526 | executeCommand(command); | |
072cd997 | 527 | snprintf(command, STRING_SIZE-1, "/usr/sbin/openvpn --config /var/ipfire/ovpn/server.conf"); |
6e13d0a5 MT |
528 | executeCommand(command); |
529 | } | |
530 | } | |
531 | ||
99b01b84 | 532 | int startNet2Net(char *name) { |
6925b8ef AF |
533 | connection *conn = NULL; |
534 | connection *conn_iter; | |
535 | ||
536 | conn_iter = getConnections(); | |
537 | ||
538 | while (conn_iter) { | |
91a0a221 | 539 | if ((strcmp(conn_iter->type, "net") == 0) && (strcmp(conn_iter->name, name) == 0)) { |
6925b8ef AF |
540 | conn = conn_iter; |
541 | break; | |
542 | } | |
543 | conn_iter = conn_iter->next; | |
544 | } | |
545 | ||
546 | if (conn == NULL) { | |
547 | fprintf(stderr, "Connection not found.\n"); | |
99b01b84 MT |
548 | return 1; |
549 | } | |
550 | ||
551 | if (strcmp(conn->status, "on") != 0) { | |
552 | fprintf(stderr, "Connection '%s' is not enabled.\n", conn->name); | |
553 | return 1; | |
6925b8ef AF |
554 | } |
555 | ||
99b01b84 MT |
556 | fprintf(stderr, "Starting connection %s...\n", conn->name); |
557 | ||
39877197 MT |
558 | char configfile[STRING_SIZE]; |
559 | snprintf(configfile, STRING_SIZE - 1, CONFIG_ROOT "/ovpn/n2nconf/%s/%s.conf", | |
560 | conn->name, conn->name); | |
561 | ||
562 | FILE *fp = fopen(configfile, "r"); | |
563 | if (fp == NULL) { | |
564 | fprintf(stderr, "Could not find configuration file for connection '%s' at '%s'.\n", | |
565 | conn->name, configfile); | |
99b01b84 | 566 | return 2; |
39877197 MT |
567 | } |
568 | fclose(fp); | |
569 | ||
07081137 MT |
570 | // Make sure all firewall rules are up to date. |
571 | setFirewallRules(); | |
572 | ||
6925b8ef | 573 | char command[STRING_SIZE]; |
81a789d9 MT |
574 | snprintf(command, STRING_SIZE-1, "/sbin/modprobe tun"); |
575 | executeCommand(command); | |
576 | snprintf(command, STRING_SIZE-1, "/usr/sbin/openvpn --config %s", configfile); | |
6925b8ef | 577 | executeCommand(command); |
99b01b84 MT |
578 | |
579 | return 0; | |
6925b8ef AF |
580 | } |
581 | ||
99b01b84 | 582 | int killNet2Net(char *name) { |
39877197 MT |
583 | connection *conn = NULL; |
584 | connection *conn_iter; | |
585 | ||
586 | conn_iter = getConnections(); | |
587 | ||
588 | while (conn_iter) { | |
589 | if (strcmp(conn_iter->name, name) == 0) { | |
590 | conn = conn_iter; | |
591 | break; | |
592 | } | |
593 | conn_iter = conn_iter->next; | |
594 | } | |
595 | ||
596 | if (conn == NULL) { | |
597 | fprintf(stderr, "Connection not found.\n"); | |
99b01b84 | 598 | return 1; |
39877197 MT |
599 | } |
600 | ||
601 | char pidfile[STRING_SIZE]; | |
80ca8bd0 | 602 | snprintf(pidfile, STRING_SIZE - 1, "/var/run/%sn2n.pid", conn->name); |
39877197 | 603 | |
2bcff894 | 604 | int pid = readPidFile(pidfile); |
80ca8bd0 | 605 | if (!pid > 0) { |
99b01b84 MT |
606 | fprintf(stderr, "Could not read pid file of connection %s.", conn->name); |
607 | return 1; | |
39877197 MT |
608 | } |
609 | ||
99b01b84 | 610 | fprintf(stderr, "Killing connection %s (PID %d)...\n", conn->name, pid); |
39877197 MT |
611 | kill(pid, SIGTERM); |
612 | ||
d4c8b6be MT |
613 | char command[STRING_SIZE]; |
614 | snprintf(command, STRING_SIZE - 1, "/bin/rm -f %s", pidfile); | |
615 | executeCommand(command); | |
616 | ||
99b01b84 | 617 | return 0; |
6925b8ef AF |
618 | } |
619 | ||
64f0c354 | 620 | void startAllNet2Net() { |
99b01b84 MT |
621 | int exitcode = 0, _exitcode = 0; |
622 | ||
64f0c354 MT |
623 | connection *conn = getConnections(); |
624 | ||
625 | while(conn) { | |
99b01b84 MT |
626 | /* Skip all connections that are not of type "net" or disabled. */ |
627 | if ((strcmp(conn->type, "net") != 0) || (strcmp(conn->status, "on") != 0)) { | |
628 | conn = conn->next; | |
629 | continue; | |
630 | } | |
631 | ||
632 | _exitcode = startNet2Net(conn->name); | |
64f0c354 | 633 | conn = conn->next; |
99b01b84 MT |
634 | |
635 | if (_exitcode > exitcode) { | |
636 | exitcode = _exitcode; | |
637 | } | |
64f0c354 MT |
638 | } |
639 | ||
99b01b84 | 640 | exit(exitcode); |
64f0c354 MT |
641 | } |
642 | ||
643 | void killAllNet2Net() { | |
99b01b84 MT |
644 | int exitcode = 0, _exitcode = 0; |
645 | ||
64f0c354 MT |
646 | connection *conn = getConnections(); |
647 | ||
648 | while(conn) { | |
99b01b84 MT |
649 | /* Skip all connections that are not of type "net". */ |
650 | if (strcmp(conn->type, "net") != 0) { | |
651 | conn = conn->next; | |
652 | continue; | |
653 | } | |
654 | ||
655 | _exitcode = killNet2Net(conn->name); | |
64f0c354 | 656 | conn = conn->next; |
99b01b84 MT |
657 | |
658 | if (_exitcode > exitcode) { | |
659 | exitcode = _exitcode; | |
660 | } | |
64f0c354 MT |
661 | } |
662 | ||
99b01b84 | 663 | exit(exitcode); |
64f0c354 MT |
664 | } |
665 | ||
6e13d0a5 MT |
666 | void displayopenvpn(void) { |
667 | char command[STRING_SIZE]; | |
668 | ||
669 | snprintf(command, STRING_SIZE - 1, "/bin/killall -sSIGUSR2 openvpn"); | |
670 | executeCommand(command); | |
671 | } | |
672 | ||
673 | int main(int argc, char *argv[]) { | |
674 | if (!(initsetuid())) | |
675 | exit(1); | |
676 | if(argc < 2) | |
677 | usage(); | |
6925b8ef AF |
678 | |
679 | if(argc == 3) { | |
91a0a221 MT |
680 | ovpnInit(); |
681 | ||
6925b8ef AF |
682 | if( (strcmp(argv[1], "-sn2n") == 0) || (strcmp(argv[1], "--start-net-2-net") == 0) ) { |
683 | startNet2Net(argv[2]); | |
684 | return 0; | |
685 | } | |
686 | else if( (strcmp(argv[1], "-kn2n") == 0) || (strcmp(argv[1], "--kill-net-2-net") == 0) ) { | |
687 | killNet2Net(argv[2]); | |
688 | return 0; | |
689 | } else { | |
690 | usage(); | |
691 | return 1; | |
692 | } | |
693 | } | |
694 | else if(argc == 2) { | |
6e13d0a5 MT |
695 | if( (strcmp(argv[1], "-k") == 0) || (strcmp(argv[1], "--kill") == 0) ) { |
696 | stopDaemon(); | |
697 | return 0; | |
698 | } | |
699 | else if( (strcmp(argv[1], "-d") == 0) || (strcmp(argv[1], "--display") == 0) ) { | |
700 | displayopenvpn(); | |
701 | return 0; | |
702 | } | |
703 | else if( (strcmp(argv[1], "-dcr") == 0) || (strcmp(argv[1], "--delete-chains-and-rules") == 0) ) { | |
704 | deleteAllChains(); | |
705 | return 0; | |
706 | } | |
707 | else { | |
708 | ovpnInit(); | |
709 | ||
710 | if( (strcmp(argv[1], "-s") == 0) || (strcmp(argv[1], "--start") == 0) ) { | |
711 | deleteAllChains(); | |
712 | createAllChains(); | |
713 | setFirewallRules(); | |
714 | startDaemon(); | |
715 | return 0; | |
716 | } | |
64f0c354 MT |
717 | else if( (strcmp(argv[1], "-sn2n") == 0) || (strcmp(argv[1], "--start-net-2-net") == 0) ) { |
718 | startAllNet2Net(); | |
719 | return 0; | |
720 | } | |
721 | else if( (strcmp(argv[1], "-kn2n") == 0) || (strcmp(argv[1], "--kill-net-2-net") == 0) ) { | |
722 | killAllNet2Net(); | |
723 | return 0; | |
724 | } | |
6e13d0a5 MT |
725 | else if( (strcmp(argv[1], "-sdo") == 0) || (strcmp(argv[1], "--start-daemon-only") == 0) ) { |
726 | startDaemon(); | |
727 | return 0; | |
728 | } | |
729 | else if( (strcmp(argv[1], "-r") == 0) || (strcmp(argv[1], "--restart") == 0) ) { | |
730 | stopDaemon(); | |
731 | deleteAllChains(); | |
732 | createAllChains(); | |
733 | setFirewallRules(); | |
734 | startDaemon(); | |
735 | return 0; | |
736 | } | |
737 | else if( (strcmp(argv[1], "-fwr") == 0) || (strcmp(argv[1], "--firewall-rules") == 0) ) { | |
738 | deleteAllChains(); | |
739 | createAllChains(); | |
740 | setFirewallRules(); | |
741 | return 0; | |
742 | } | |
743 | else if( (strcmp(argv[1], "-ccr") == 0) || (strcmp(argv[1], "--create-chains-and-rules") == 0) ) { | |
744 | createAllChains(); | |
745 | setFirewallRules(); | |
746 | return 0; | |
747 | } | |
748 | else { | |
749 | usage(); | |
750 | return 0; | |
751 | } | |
752 | } | |
753 | } | |
754 | else { | |
755 | usage(); | |
756 | return 0; | |
757 | } | |
758 | return 0; | |
759 | } | |
760 |