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a8b1843b | 1 | #!/usr/bin/python3 |
0fbd7c3c MT |
2 | ############################################################################### |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2016 Michael Tremer # | |
6 | # # | |
7 | # This program is free software: you can redistribute it and/or modify # | |
8 | # it under the terms of the GNU General Public License as published by # | |
9 | # the Free Software Foundation, either version 3 of the License, or # | |
10 | # (at your option) any later version. # | |
11 | # # | |
12 | # This program is distributed in the hope that it will be useful, # | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
15 | # GNU General Public License for more details. # | |
16 | # # | |
17 | # You should have received a copy of the GNU General Public License # | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
19 | # # | |
20 | ############################################################################### | |
21 | ||
22 | import argparse | |
23 | import datetime | |
24 | import daemon | |
091cb62a | 25 | import functools |
74a5ab67 | 26 | import ipaddress |
0fbd7c3c MT |
27 | import logging |
28 | import logging.handlers | |
b666975e | 29 | import os |
0fbd7c3c MT |
30 | import re |
31 | import signal | |
7be4822f | 32 | import stat |
0fbd7c3c | 33 | import subprocess |
29a36036 | 34 | import sys |
b666975e | 35 | import tempfile |
6d6e7949 | 36 | import time |
0fbd7c3c MT |
37 | |
38 | import inotify.adapters | |
39 | ||
077ea717 MT |
40 | LOCAL_TTL = 60 |
41 | ||
29a36036 MT |
42 | log = logging.getLogger("dhcp") |
43 | log.setLevel(logging.DEBUG) | |
44 | ||
45 | def setup_logging(daemon=True, loglevel=logging.INFO): | |
0fbd7c3c MT |
46 | log.setLevel(loglevel) |
47 | ||
29a36036 | 48 | # Log to syslog by default |
0fbd7c3c | 49 | handler = logging.handlers.SysLogHandler(address="/dev/log", facility="daemon") |
29a36036 | 50 | log.addHandler(handler) |
0fbd7c3c | 51 | |
29a36036 | 52 | # Format everything |
0fbd7c3c MT |
53 | formatter = logging.Formatter("%(name)s[%(process)d]: %(message)s") |
54 | handler.setFormatter(formatter) | |
55 | ||
29a36036 | 56 | handler.setLevel(loglevel) |
0fbd7c3c | 57 | |
29a36036 MT |
58 | # If we are running in foreground, we should write everything to the console, too |
59 | if not daemon: | |
60 | handler = logging.StreamHandler() | |
61 | log.addHandler(handler) | |
0fbd7c3c | 62 | |
29a36036 MT |
63 | handler.setLevel(loglevel) |
64 | ||
65 | return log | |
0fbd7c3c | 66 | |
e22bcd38 MT |
67 | def ip_address_to_reverse_pointer(address): |
68 | parts = address.split(".") | |
69 | parts.reverse() | |
70 | ||
71 | return "%s.in-addr.arpa" % ".".join(parts) | |
72 | ||
73 | def reverse_pointer_to_ip_address(rr): | |
74 | parts = rr.split(".") | |
75 | ||
76 | # Only take IP address part | |
77 | parts = reversed(parts[0:4]) | |
78 | ||
79 | return ".".join(parts) | |
80 | ||
0fbd7c3c | 81 | class UnboundDHCPLeasesBridge(object): |
7354d294 | 82 | def __init__(self, dhcp_leases_file, fix_leases_file, unbound_leases_file, hosts_file): |
0fbd7c3c | 83 | self.leases_file = dhcp_leases_file |
86c9deb2 | 84 | self.fix_leases_file = fix_leases_file |
7354d294 | 85 | self.hosts_file = hosts_file |
0fbd7c3c | 86 | |
6d6e7949 MT |
87 | self.watches = { |
88 | self.leases_file : inotify.constants.IN_MODIFY, | |
89 | self.fix_leases_file : 0, | |
90 | self.hosts_file : 0, | |
91 | } | |
92 | ||
0fbd7c3c MT |
93 | self.unbound = UnboundConfigWriter(unbound_leases_file) |
94 | self.running = False | |
95 | ||
96 | def run(self): | |
97 | log.info("Unbound DHCP Leases Bridge started on %s" % self.leases_file) | |
98 | self.running = True | |
99 | ||
6d6e7949 MT |
100 | i = inotify.adapters.Inotify() |
101 | ||
102 | # Add watches for the directories of every relevant file | |
103 | for f, mask in self.watches.items(): | |
104 | i.add_watch( | |
105 | os.path.dirname(f), | |
106 | mask | inotify.constants.IN_CLOSE_WRITE | inotify.constants.IN_MOVED_TO, | |
107 | ) | |
108 | ||
109 | # Enabled so that we update hosts and leases on startup | |
110 | update_hosts = update_leases = True | |
111 | ||
112 | while self.running: | |
113 | log.debug("Wakeup of main loop") | |
0fbd7c3c | 114 | |
6d6e7949 MT |
115 | # Process the entire inotify queue and identify what we need to do |
116 | for event in i.event_gen(): | |
117 | # Nothing to do | |
118 | if event is None: | |
119 | break | |
0fbd7c3c | 120 | |
6d6e7949 MT |
121 | # Decode the event |
122 | header, type_names, path, filename = event | |
0fbd7c3c | 123 | |
6d6e7949 | 124 | file = os.path.join(path, filename) |
0fbd7c3c | 125 | |
6d6e7949 | 126 | log.debug("inotify event received for %s: %s", file, " ".join(type_names)) |
0fbd7c3c | 127 | |
6d6e7949 MT |
128 | # Did the hosts file change? |
129 | if self.hosts_file == file: | |
130 | update_hosts = True | |
7354d294 | 131 | |
6d6e7949 MT |
132 | # We will need to update the leases on any change |
133 | update_leases = True | |
134 | ||
135 | # Update hosts (if needed) | |
136 | if update_hosts: | |
137 | self.hosts = self.read_static_hosts() | |
138 | ||
139 | # Update leases (if needed) | |
140 | if update_leases: | |
0fbd7c3c MT |
141 | self.update_dhcp_leases() |
142 | ||
6d6e7949 MT |
143 | # Reset |
144 | update_hosts = update_leases = False | |
145 | ||
146 | # Wait a moment before we start the next iteration | |
147 | time.sleep(5) | |
86c9deb2 | 148 | |
0fbd7c3c MT |
149 | log.info("Unbound DHCP Leases Bridge terminated") |
150 | ||
151 | def update_dhcp_leases(self): | |
86c9deb2 MT |
152 | leases = [] |
153 | ||
154 | for lease in DHCPLeases(self.leases_file): | |
5d4f3a42 MT |
155 | # Don't bother with any leases that don't have a hostname |
156 | if not lease.fqdn: | |
157 | continue | |
158 | ||
86c9deb2 MT |
159 | leases.append(lease) |
160 | ||
161 | for lease in FixLeases(self.fix_leases_file): | |
162 | leases.append(lease) | |
0fbd7c3c | 163 | |
c7b83f9b MT |
164 | # Skip any leases that also are a static host |
165 | leases = [l for l in leases if not l.fqdn in self.hosts] | |
166 | ||
167 | # Remove any inactive or expired leases | |
168 | leases = [l for l in leases if l.active and not l.expired] | |
169 | ||
170 | # Dump leases | |
171 | if leases: | |
172 | log.debug("DHCP Leases:") | |
173 | for lease in leases: | |
174 | log.debug(" %s:" % lease.fqdn) | |
175 | log.debug(" State: %s" % lease.binding_state) | |
176 | log.debug(" Start: %s" % lease.time_starts) | |
177 | log.debug(" End : %s" % lease.time_ends) | |
178 | if lease.expired: | |
179 | log.debug(" Expired") | |
180 | ||
0fbd7c3c MT |
181 | self.unbound.update_dhcp_leases(leases) |
182 | ||
7354d294 MT |
183 | def read_static_hosts(self): |
184 | log.info("Reading static hosts from %s" % self.hosts_file) | |
185 | ||
186 | hosts = {} | |
187 | with open(self.hosts_file) as f: | |
188 | for line in f.readlines(): | |
189 | line = line.rstrip() | |
190 | ||
191 | try: | |
4a465756 | 192 | enabled, ipaddr, hostname, domainname, generateptr = line.split(",") |
7354d294 MT |
193 | except: |
194 | log.warning("Could not parse line: %s" % line) | |
195 | continue | |
196 | ||
197 | # Skip any disabled entries | |
198 | if not enabled == "on": | |
199 | continue | |
200 | ||
201 | if hostname and domainname: | |
202 | fqdn = "%s.%s" % (hostname, domainname) | |
203 | elif hostname: | |
204 | fqdn = hostname | |
205 | elif domainname: | |
206 | fqdn = domainname | |
207 | ||
208 | try: | |
209 | hosts[fqdn].append(ipaddr) | |
210 | hosts[fqdn].sort() | |
211 | except KeyError: | |
212 | hosts[fqdn] = [ipaddr,] | |
213 | ||
214 | # Dump everything in the logs | |
215 | log.debug("Static hosts:") | |
96c86cf6 MT |
216 | for name in hosts: |
217 | log.debug(" %-20s : %s" % (name, ", ".join(hosts[name]))) | |
7354d294 MT |
218 | |
219 | return hosts | |
220 | ||
0fbd7c3c MT |
221 | def terminate(self): |
222 | self.running = False | |
223 | ||
224 | ||
225 | class DHCPLeases(object): | |
226 | regex_leaseblock = re.compile(r"lease (?P<ipaddr>\d+\.\d+\.\d+\.\d+) {(?P<config>[\s\S]+?)\n}") | |
227 | ||
228 | def __init__(self, path): | |
229 | self.path = path | |
230 | ||
231 | self._leases = self._parse() | |
232 | ||
233 | def __iter__(self): | |
234 | return iter(self._leases) | |
235 | ||
236 | def _parse(self): | |
86c9deb2 MT |
237 | log.info("Reading DHCP leases from %s" % self.path) |
238 | ||
0fbd7c3c MT |
239 | leases = [] |
240 | ||
241 | with open(self.path) as f: | |
242 | # Read entire leases file | |
243 | data = f.read() | |
244 | ||
245 | for match in self.regex_leaseblock.finditer(data): | |
246 | block = match.groupdict() | |
247 | ||
248 | ipaddr = block.get("ipaddr") | |
249 | config = block.get("config") | |
250 | ||
251 | properties = self._parse_block(config) | |
252 | ||
253 | # Skip any abandoned leases | |
254 | if not "hardware" in properties: | |
255 | continue | |
256 | ||
257 | lease = Lease(ipaddr, properties) | |
258 | ||
259 | # Check if a lease for this Ethernet address already | |
260 | # exists in the list of known leases. If so replace | |
261 | # if with the most recent lease | |
262 | for i, l in enumerate(leases): | |
8b1eb795 | 263 | if l.ipaddr == lease.ipaddr: |
0fbd7c3c MT |
264 | leases[i] = max(lease, l) |
265 | break | |
266 | ||
267 | else: | |
268 | leases.append(lease) | |
269 | ||
270 | return leases | |
271 | ||
272 | def _parse_block(self, block): | |
273 | properties = {} | |
274 | ||
275 | for line in block.splitlines(): | |
276 | if not line: | |
277 | continue | |
278 | ||
279 | # Remove trailing ; from line | |
280 | if line.endswith(";"): | |
281 | line = line[:-1] | |
282 | ||
283 | # Invalid line if it doesn't end with ; | |
284 | else: | |
285 | continue | |
286 | ||
287 | # Remove any leading whitespace | |
288 | line = line.lstrip() | |
289 | ||
290 | # We skip all options and sets | |
291 | if line.startswith("option") or line.startswith("set"): | |
292 | continue | |
293 | ||
294 | # Split by first space | |
295 | key, val = line.split(" ", 1) | |
296 | properties[key] = val | |
297 | ||
298 | return properties | |
299 | ||
300 | ||
86c9deb2 MT |
301 | class FixLeases(object): |
302 | cache = {} | |
303 | ||
304 | def __init__(self, path): | |
305 | self.path = path | |
306 | ||
307 | self._leases = self.cache[self.path] = self._parse() | |
308 | ||
309 | def __iter__(self): | |
310 | return iter(self._leases) | |
311 | ||
312 | def _parse(self): | |
313 | log.info("Reading fix leases from %s" % self.path) | |
314 | ||
315 | leases = [] | |
316 | now = datetime.datetime.utcnow() | |
317 | ||
318 | with open(self.path) as f: | |
319 | for line in f.readlines(): | |
320 | line = line.rstrip() | |
321 | ||
322 | try: | |
323 | hwaddr, ipaddr, enabled, a, b, c, hostname = line.split(",") | |
324 | except ValueError: | |
325 | log.warning("Could not parse line: %s" % line) | |
326 | continue | |
327 | ||
328 | # Skip any disabled leases | |
329 | if not enabled == "on": | |
330 | continue | |
331 | ||
332 | l = Lease(ipaddr, { | |
333 | "binding" : "state active", | |
334 | "client-hostname" : hostname, | |
335 | "hardware" : "ethernet %s" % hwaddr, | |
336 | "starts" : now.strftime("%w %Y/%m/%d %H:%M:%S"), | |
337 | "ends" : "never", | |
338 | }) | |
339 | leases.append(l) | |
340 | ||
341 | # Try finding any deleted leases | |
342 | for lease in self.cache.get(self.path, []): | |
343 | if lease in leases: | |
344 | continue | |
345 | ||
346 | # Free the deleted lease | |
347 | lease.free() | |
348 | leases.append(lease) | |
349 | ||
350 | return leases | |
351 | ||
352 | ||
0fbd7c3c MT |
353 | class Lease(object): |
354 | def __init__(self, ipaddr, properties): | |
355 | self.ipaddr = ipaddr | |
356 | self._properties = properties | |
357 | ||
358 | def __repr__(self): | |
359 | return "<%s %s for %s (%s)>" % (self.__class__.__name__, | |
360 | self.ipaddr, self.hwaddr, self.hostname) | |
361 | ||
362 | def __eq__(self, other): | |
363 | return self.ipaddr == other.ipaddr and self.hwaddr == other.hwaddr | |
364 | ||
365 | def __gt__(self, other): | |
366 | if not self.ipaddr == other.ipaddr: | |
367 | return | |
368 | ||
369 | if not self.hwaddr == other.hwaddr: | |
370 | return | |
371 | ||
372 | return self.time_starts > other.time_starts | |
373 | ||
374 | @property | |
375 | def binding_state(self): | |
376 | state = self._properties.get("binding") | |
377 | ||
378 | if state: | |
379 | state = state.split(" ", 1) | |
380 | return state[1] | |
381 | ||
86c9deb2 MT |
382 | def free(self): |
383 | self._properties.update({ | |
384 | "binding" : "state free", | |
385 | }) | |
386 | ||
0fbd7c3c MT |
387 | @property |
388 | def active(self): | |
389 | return self.binding_state == "active" | |
390 | ||
391 | @property | |
392 | def hwaddr(self): | |
393 | hardware = self._properties.get("hardware") | |
394 | ||
395 | if not hardware: | |
396 | return | |
397 | ||
398 | ethernet, address = hardware.split(" ", 1) | |
399 | ||
400 | return address | |
401 | ||
402 | @property | |
403 | def hostname(self): | |
404 | hostname = self._properties.get("client-hostname") | |
405 | ||
998e880b MT |
406 | if hostname is None: |
407 | return | |
408 | ||
0fbd7c3c | 409 | # Remove any "" |
998e880b | 410 | hostname = hostname.replace("\"", "") |
0fbd7c3c | 411 | |
998e880b MT |
412 | # Only return valid hostnames |
413 | m = re.match(r"^[A-Z0-9\-]{1,63}$", hostname, re.I) | |
414 | if m: | |
415 | return hostname | |
0fbd7c3c MT |
416 | |
417 | @property | |
418 | def domain(self): | |
74a5ab67 MT |
419 | # Load ethernet settings |
420 | ethernet_settings = self.read_settings("/var/ipfire/ethernet/settings") | |
421 | ||
422 | # Load DHCP settings | |
423 | dhcp_settings = self.read_settings("/var/ipfire/dhcp/settings") | |
424 | ||
425 | subnets = {} | |
426 | for zone in ("GREEN", "BLUE"): | |
427 | if not dhcp_settings.get("ENABLE_%s" % zone) == "on": | |
428 | continue | |
429 | ||
430 | netaddr = ethernet_settings.get("%s_NETADDRESS" % zone) | |
431 | submask = ethernet_settings.get("%s_NETMASK" % zone) | |
432 | ||
433 | subnet = ipaddress.ip_network("%s/%s" % (netaddr, submask)) | |
434 | domain = dhcp_settings.get("DOMAIN_NAME_%s" % zone) | |
435 | ||
436 | subnets[subnet] = domain | |
437 | ||
438 | address = ipaddress.ip_address(self.ipaddr) | |
439 | ||
96c86cf6 | 440 | for subnet in subnets: |
74a5ab67 | 441 | if address in subnet: |
96c86cf6 | 442 | return subnets[subnet] |
74a5ab67 MT |
443 | |
444 | # Fall back to localdomain if no match could be found | |
445 | return "localdomain" | |
446 | ||
447 | @staticmethod | |
091cb62a | 448 | @functools.cache |
74a5ab67 MT |
449 | def read_settings(filename): |
450 | settings = {} | |
451 | ||
452 | with open(filename) as f: | |
453 | for line in f.readlines(): | |
454 | # Remove line-breaks | |
455 | line = line.rstrip() | |
456 | ||
457 | k, v = line.split("=", 1) | |
458 | settings[k] = v | |
459 | ||
460 | return settings | |
0fbd7c3c MT |
461 | |
462 | @property | |
463 | def fqdn(self): | |
998e880b MT |
464 | if self.hostname: |
465 | return "%s.%s" % (self.hostname, self.domain) | |
0fbd7c3c MT |
466 | |
467 | @staticmethod | |
468 | def _parse_time(s): | |
469 | return datetime.datetime.strptime(s, "%w %Y/%m/%d %H:%M:%S") | |
470 | ||
471 | @property | |
472 | def time_starts(self): | |
473 | starts = self._properties.get("starts") | |
474 | ||
475 | if starts: | |
476 | return self._parse_time(starts) | |
477 | ||
478 | @property | |
479 | def time_ends(self): | |
480 | ends = self._properties.get("ends") | |
481 | ||
482 | if not ends or ends == "never": | |
483 | return | |
484 | ||
485 | return self._parse_time(ends) | |
486 | ||
487 | @property | |
488 | def expired(self): | |
489 | if not self.time_ends: | |
490 | return self.time_starts > datetime.datetime.utcnow() | |
491 | ||
492 | return self.time_starts > datetime.datetime.utcnow() > self.time_ends | |
493 | ||
494 | @property | |
495 | def rrset(self): | |
998e880b MT |
496 | # If the lease does not have a valid FQDN, we cannot create any RRs |
497 | if self.fqdn is None: | |
498 | return [] | |
499 | ||
0fbd7c3c MT |
500 | return [ |
501 | # Forward record | |
b8dd42b9 | 502 | (self.fqdn, "%s" % LOCAL_TTL, "IN A", self.ipaddr), |
0fbd7c3c MT |
503 | |
504 | # Reverse record | |
e22bcd38 MT |
505 | (ip_address_to_reverse_pointer(self.ipaddr), "%s" % LOCAL_TTL, |
506 | "IN PTR", self.fqdn), | |
0fbd7c3c MT |
507 | ] |
508 | ||
509 | ||
510 | class UnboundConfigWriter(object): | |
511 | def __init__(self, path): | |
512 | self.path = path | |
513 | ||
c7b83f9b | 514 | self._cached_leases = [] |
0fbd7c3c MT |
515 | |
516 | def update_dhcp_leases(self, leases): | |
d20ef9d7 MT |
517 | # Find any leases that have expired or do not exist any more |
518 | # but are still in the unbound local data | |
c7b83f9b | 519 | removed_leases = [l for l in self._cached_leases if not l in leases] |
d20ef9d7 | 520 | |
0fbd7c3c | 521 | # Find any leases that have been added |
c7b83f9b | 522 | new_leases = [l for l in leases if l not in self._cached_leases] |
0fbd7c3c MT |
523 | |
524 | # End here if nothing has changed | |
525 | if not new_leases and not removed_leases: | |
526 | return | |
527 | ||
0fbd7c3c MT |
528 | # Write out all leases |
529 | self.write_dhcp_leases(leases) | |
530 | ||
531 | # Update unbound about changes | |
c7b83f9b | 532 | for l in removed_leases: |
3ec5ba50 MT |
533 | try: |
534 | for name, ttl, type, content in l.rrset: | |
535 | log.debug("Removing records for %s" % name) | |
536 | self._control("local_data_remove", name) | |
537 | ||
538 | # If the lease cannot be removed we will try the next one | |
539 | except: | |
540 | continue | |
541 | ||
542 | # If the removal was successful, we will remove it from the cache | |
543 | else: | |
544 | self._cached_leases.remove(l) | |
0fbd7c3c MT |
545 | |
546 | for l in new_leases: | |
3ec5ba50 MT |
547 | try: |
548 | for rr in l.rrset: | |
549 | log.debug("Adding new record %s" % " ".join(rr)) | |
550 | self._control("local_data", *rr) | |
0fbd7c3c | 551 | |
3ec5ba50 MT |
552 | # If the lease cannot be added we will try the next one |
553 | except: | |
554 | continue | |
555 | ||
556 | # Add lease to cache when successfully added | |
557 | else: | |
558 | self._cached_leases.append(l) | |
0fbd7c3c MT |
559 | |
560 | def write_dhcp_leases(self, leases): | |
b666975e MT |
561 | with tempfile.NamedTemporaryFile(mode="w", delete=False) as f: |
562 | filename = f.name | |
563 | ||
0fbd7c3c MT |
564 | for l in leases: |
565 | for rr in l.rrset: | |
566 | f.write("local-data: \"%s\"\n" % " ".join(rr)) | |
567 | ||
7be4822f MT |
568 | # Make file readable for everyone |
569 | os.fchmod(f.fileno(), stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH) | |
570 | ||
b666975e MT |
571 | os.rename(filename, self.path) |
572 | ||
0fbd7c3c | 573 | def _control(self, *args): |
b8dd42b9 | 574 | command = ["unbound-control"] |
0fbd7c3c MT |
575 | command.extend(args) |
576 | ||
577 | try: | |
3ec5ba50 | 578 | subprocess.check_output(command) |
0fbd7c3c MT |
579 | |
580 | # Log any errors | |
581 | except subprocess.CalledProcessError as e: | |
582 | log.critical("Could not run %s, error code: %s: %s" % ( | |
583 | " ".join(command), e.returncode, e.output)) | |
584 | ||
3ec5ba50 MT |
585 | raise |
586 | ||
0fbd7c3c MT |
587 | |
588 | if __name__ == "__main__": | |
589 | parser = argparse.ArgumentParser(description="Bridge for DHCP Leases and Unbound DNS") | |
590 | ||
591 | # Daemon Stuff | |
592 | parser.add_argument("--daemon", "-d", action="store_true", | |
593 | help="Launch as daemon in background") | |
594 | parser.add_argument("--verbose", "-v", action="count", help="Be more verbose") | |
595 | ||
596 | # Paths | |
597 | parser.add_argument("--dhcp-leases", default="/var/state/dhcp/dhcpd.leases", | |
598 | metavar="PATH", help="Path to the DHCPd leases file") | |
599 | parser.add_argument("--unbound-leases", default="/etc/unbound/dhcp-leases.conf", | |
600 | metavar="PATH", help="Path to the unbound configuration file") | |
86c9deb2 MT |
601 | parser.add_argument("--fix-leases", default="/var/ipfire/dhcp/fixleases", |
602 | metavar="PATH", help="Path to the fix leases file") | |
7354d294 MT |
603 | parser.add_argument("--hosts", default="/var/ipfire/main/hosts", |
604 | metavar="PATH", help="Path to static hosts file") | |
0fbd7c3c MT |
605 | |
606 | # Parse command line arguments | |
607 | args = parser.parse_args() | |
608 | ||
609 | # Setup logging | |
83e5f672 MT |
610 | loglevel = logging.WARN |
611 | ||
612 | if args.verbose: | |
613 | if args.verbose == 1: | |
614 | loglevel = logging.INFO | |
615 | elif args.verbose >= 2: | |
616 | loglevel = logging.DEBUG | |
0fbd7c3c | 617 | |
7354d294 MT |
618 | bridge = UnboundDHCPLeasesBridge(args.dhcp_leases, args.fix_leases, |
619 | args.unbound_leases, args.hosts) | |
0fbd7c3c | 620 | |
29a36036 | 621 | ctx = daemon.DaemonContext(detach_process=args.daemon, stderr=sys.stderr) |
0fbd7c3c MT |
622 | ctx.signal_map = { |
623 | signal.SIGHUP : bridge.update_dhcp_leases, | |
624 | signal.SIGTERM : bridge.terminate, | |
625 | } | |
626 | ||
627 | with ctx: | |
f9611355 MT |
628 | setup_logging(daemon=args.daemon, loglevel=loglevel) |
629 | ||
0fbd7c3c | 630 | bridge.run() |