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1 | #! @PYTHON@ |
2 | ### -*-python-*- | |
3 | ### | |
4 | ### Service for automatically tracking network connection status | |
5 | ### | |
6 | ### (c) 2010 Straylight/Edgeware | |
7 | ### | |
8 | ||
9 | ###----- Licensing notice --------------------------------------------------- | |
10 | ### | |
11 | ### This file is part of Trivial IP Encryption (TrIPE). | |
12 | ### | |
11ad66c2 MW |
13 | ### TrIPE is free software: you can redistribute it and/or modify it under |
14 | ### the terms of the GNU General Public License as published by the Free | |
15 | ### Software Foundation; either version 3 of the License, or (at your | |
16 | ### option) any later version. | |
2ec90437 | 17 | ### |
11ad66c2 MW |
18 | ### TrIPE is distributed in the hope that it will be useful, but WITHOUT |
19 | ### ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
20 | ### FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
21 | ### for more details. | |
2ec90437 MW |
22 | ### |
23 | ### You should have received a copy of the GNU General Public License | |
11ad66c2 | 24 | ### along with TrIPE. If not, see <https://www.gnu.org/licenses/>. |
2ec90437 MW |
25 | |
26 | VERSION = '@VERSION@' | |
27 | ||
28 | ###-------------------------------------------------------------------------- | |
29 | ### External dependencies. | |
30 | ||
31 | from ConfigParser import RawConfigParser | |
32 | from optparse import OptionParser | |
33 | import os as OS | |
34 | import sys as SYS | |
35 | import socket as S | |
36 | import mLib as M | |
37 | import tripe as T | |
38 | import dbus as D | |
f8204e50 | 39 | import re as RX |
2ec90437 MW |
40 | for i in ['mainloop', 'mainloop.glib']: |
41 | __import__('dbus.%s' % i) | |
a69f4417 MW |
42 | try: from gi.repository import GLib as G |
43 | except ImportError: import gobject as G | |
2ec90437 MW |
44 | from struct import pack, unpack |
45 | ||
46 | SM = T.svcmgr | |
47 | ##__import__('rmcr').__debug = True | |
48 | ||
49 | ###-------------------------------------------------------------------------- | |
50 | ### Utilities. | |
51 | ||
52 | class struct (object): | |
53 | """A simple container object.""" | |
54 | def __init__(me, **kw): | |
55 | me.__dict__.update(kw) | |
56 | ||
6e8bbeeb MW |
57 | ###-------------------------------------------------------------------------- |
58 | ### Address manipulation. | |
59 | ||
6aa21132 MW |
60 | class InetAddress (object): |
61 | def __init__(me, addrstr, maskstr = None): | |
62 | me.addr = me._addrstr_to_int(addrstr) | |
63 | if maskstr is None: | |
64 | me.mask = -1 | |
65 | elif maskstr.isdigit(): | |
66 | me.mask = (1 << 32) - (1 << 32 - int(maskstr)) | |
67 | else: | |
68 | me.mask = me._addrstr_to_int(maskstr) | |
69 | if me.addr&~me.mask: | |
70 | raise ValueError('network contains bits set beyond mask') | |
71 | def _addrstr_to_int(me, addrstr): | |
72 | return unpack('>L', S.inet_aton(addrstr))[0] | |
73 | def _int_to_addrstr(me, n): | |
74 | return S.inet_ntoa(pack('>L', n)) | |
75 | def sockaddr(me, port = 0): | |
76 | if me.mask != -1: raise ValueError('not a simple address') | |
77 | return me._int_to_addrstr(me.addr), port | |
78 | def __str__(me): | |
79 | addrstr = me._int_to_addrstr(me.addr) | |
80 | if me.mask == -1: | |
81 | return addrstr | |
82 | else: | |
83 | inv = me.mask ^ ((1 << 32) - 1) | |
84 | if (inv&(inv + 1)) == 0: | |
85 | return '%s/%d' % (addrstr, 32 - inv.bit_length()) | |
86 | else: | |
87 | return '%s/%s' % (addrstr, me._int_to_addrstr(me.mask)) | |
88 | def withinp(me, net): | |
89 | if (me.mask&net.mask) != net.mask: return False | |
90 | if (me.addr ^ net.addr)&net.mask: return False | |
91 | return True | |
92 | def eq(me, other): | |
93 | if me.mask != other.mask: return False | |
94 | if me.addr != other.addr: return False | |
95 | return True | |
96 | @classmethod | |
97 | def from_sockaddr(cls, sa): | |
98 | addr, port = (lambda a, p: (a, p))(*sa) | |
99 | return cls(addr), port | |
100 | ||
101 | def parse_address(addrstr, maskstr = None): | |
102 | return InetAddress(addrstr, maskstr) | |
11ab0da6 | 103 | |
69bdcb64 MW |
104 | def parse_net(netstr): |
105 | try: sl = netstr.index('/') | |
106 | except ValueError: raise ValueError('missing mask') | |
6aa21132 | 107 | return parse_address(netstr[:sl], netstr[sl + 1:]) |
69bdcb64 | 108 | |
6aa21132 | 109 | def straddr(a): return a is None and '#<none>' or str(a) |
6e8bbeeb | 110 | |
2ec90437 MW |
111 | ###-------------------------------------------------------------------------- |
112 | ### Parse the configuration file. | |
113 | ||
114 | ## Hmm. Should I try to integrate this with the peers database? It's not a | |
115 | ## good fit; it'd need special hacks in tripe-newpeers. And the use case for | |
116 | ## this service are largely going to be satellite notes, I don't think | |
117 | ## scalability's going to be a problem. | |
118 | ||
6aa21132 MW |
119 | TESTADDR = InetAddress('1.2.3.4') |
120 | ||
f8204e50 MW |
121 | CONFSYNTAX = [ |
122 | ('COMMENT', RX.compile(r'^\s*($|[;#])')), | |
123 | ('GRPHDR', RX.compile(r'^\s*\[(.*)\]\s*$')), | |
124 | ('ASSGN', RX.compile(r'\s*([\w.-]+)\s*[:=]\s*(|\S|\S.*\S)\s*$'))] | |
125 | ||
126 | class ConfigError (Exception): | |
127 | def __init__(me, file, lno, msg): | |
128 | me.file = file | |
129 | me.lno = lno | |
130 | me.msg = msg | |
131 | def __str__(me): | |
132 | return '%s:%d: %s' % (me.file, me.lno, me.msg) | |
133 | ||
2ec90437 MW |
134 | class Config (object): |
135 | """ | |
136 | Represents a configuration file. | |
137 | ||
138 | The most interesting thing is probably the `groups' slot, which stores a | |
139 | list of pairs (NAME, PATTERNS); the NAME is a string, and the PATTERNS a | |
6aa21132 MW |
140 | list of (TAG, PEER, NET) triples. The implication is that there should be |
141 | precisely one peer from the set, and that it should be named TAG, where | |
142 | (TAG, PEER, NET) is the first triple such that the host's primary IP | |
143 | address (if PEER is None -- or the IP address it would use for | |
144 | communicating with PEER) is within the NET. | |
2ec90437 MW |
145 | """ |
146 | ||
147 | def __init__(me, file): | |
148 | """ | |
149 | Construct a new Config object, reading the given FILE. | |
150 | """ | |
151 | me._file = file | |
152 | me._fwatch = M.FWatch(file) | |
153 | me._update() | |
154 | ||
155 | def check(me): | |
156 | """ | |
157 | See whether the configuration file has been updated. | |
158 | """ | |
159 | if me._fwatch.update(): | |
160 | me._update() | |
161 | ||
162 | def _update(me): | |
163 | """ | |
164 | Internal function to update the configuration from the underlying file. | |
165 | """ | |
166 | ||
2d4998c4 | 167 | if T._debug: print '# reread config' |
2ec90437 | 168 | |
f8204e50 MW |
169 | ## Initial state. |
170 | testaddr = None | |
f8d6fc7b | 171 | groups = {} |
f8204e50 MW |
172 | grpname = None |
173 | grplist = [] | |
174 | ||
175 | ## Open the file and start reading. | |
176 | with open(me._file) as f: | |
177 | lno = 0 | |
178 | for line in f: | |
179 | lno += 1 | |
180 | for tag, rx in CONFSYNTAX: | |
181 | m = rx.match(line) | |
182 | if m: break | |
2ec90437 | 183 | else: |
f8204e50 MW |
184 | raise ConfigError(me._file, lno, 'failed to parse line: %r' % line) |
185 | ||
186 | if tag == 'COMMENT': | |
187 | ## A comment. Ignore it and hope it goes away. | |
188 | ||
189 | continue | |
190 | ||
191 | elif tag == 'GRPHDR': | |
192 | ## A group header. Flush the old group and start a new one. | |
193 | newname = m.group(1) | |
194 | ||
195 | if grpname is not None: groups[grpname] = grplist | |
196 | if newname in groups: | |
197 | raise ConfigError(me._file, lno, | |
198 | "duplicate group name `%s'" % newname) | |
199 | grpname = newname | |
200 | grplist = [] | |
201 | ||
202 | elif tag == 'ASSGN': | |
203 | ## An assignment. Deal with it. | |
204 | name, value = m.group(1), m.group(2) | |
205 | ||
206 | if grpname is None: | |
207 | ## We're outside of any group, so this is a global configuration | |
208 | ## tweak. | |
209 | ||
210 | if name == 'test-addr': | |
211 | for astr in value.split(): | |
212 | try: | |
213 | a = parse_address(astr) | |
214 | except Exception, e: | |
215 | raise ConfigError(me._file, lno, | |
216 | "invalid IP address `%s': %s" % | |
217 | (astr, e)) | |
218 | if testaddr is not None: | |
219 | raise ConfigError(me._file, lno, 'duplicate test-address') | |
220 | testaddr = a | |
221 | else: | |
222 | raise ConfigError(me._file, lno, | |
223 | "unknown global option `%s'" % name) | |
224 | ||
225 | else: | |
226 | ## Parse a pattern and add it to the group. | |
227 | spec = value.split() | |
228 | i = 0 | |
229 | ||
230 | ## Check for an explicit target address. | |
231 | if i >= len(spec) or spec[i].find('/') >= 0: | |
232 | peer = None | |
233 | else: | |
234 | try: | |
235 | peer = parse_address(spec[i]) | |
236 | except Exception, e: | |
237 | raise ConfigError(me._file, lno, | |
238 | "invalid IP address `%s': %s" % | |
239 | (spec[i], e)) | |
240 | i += 1 | |
241 | ||
242 | ## Parse the local network. | |
243 | if len(spec) != i + 1: | |
244 | raise ConfigError(me._file, lno, 'no network defined') | |
245 | try: | |
246 | net = parse_net(spec[i]) | |
247 | except Exception, e: | |
248 | raise ConfigError(me._file, lno, | |
249 | "invalid IP network `%s': %s" % | |
250 | (spec[i], e)) | |
251 | ||
252 | ## Add this entry to the list. | |
253 | grplist.append((name, peer, net)) | |
254 | ||
255 | ## Fill in the default test address if necessary. | |
256 | if testaddr is None: testaddr = TESTADDR | |
2ec90437 MW |
257 | |
258 | ## Done. | |
f8204e50 | 259 | if grpname is not None: groups[grpname] = grplist |
2ec90437 MW |
260 | me.testaddr = testaddr |
261 | me.groups = groups | |
262 | ||
263 | ### This will be a configuration file. | |
264 | CF = None | |
265 | ||
2d4998c4 MW |
266 | def cmd_showconfig(): |
267 | T.svcinfo('test-addr=%s' % CF.testaddr) | |
268 | def cmd_showgroups(): | |
f8d6fc7b MW |
269 | for g in sorted(CF.groups.iterkeys()): |
270 | T.svcinfo(g) | |
2d4998c4 | 271 | def cmd_showgroup(g): |
f8d6fc7b MW |
272 | try: pats = CF.groups[g] |
273 | except KeyError: raise T.TripeJobError('unknown-group', g) | |
6aa21132 | 274 | for t, p, n in pats: |
2d4998c4 | 275 | T.svcinfo('peer', t, |
6aa21132 MW |
276 | 'target', p and str(p) or '(default)', |
277 | 'net', str(n)) | |
2d4998c4 | 278 | |
2ec90437 MW |
279 | ###-------------------------------------------------------------------------- |
280 | ### Responding to a network up/down event. | |
281 | ||
282 | def localaddr(peer): | |
283 | """ | |
284 | Return the local IP address used for talking to PEER. | |
285 | """ | |
286 | sk = S.socket(S.AF_INET, S.SOCK_DGRAM) | |
287 | try: | |
288 | try: | |
6aa21132 MW |
289 | sk.connect(peer.sockaddr(1)) |
290 | addr = sk.getsockname() | |
291 | return InetAddress.from_sockaddr(addr)[0] | |
2ec90437 MW |
292 | except S.error: |
293 | return None | |
294 | finally: | |
295 | sk.close() | |
296 | ||
297 | _kick = T.Queue() | |
f5393555 MW |
298 | _delay = None |
299 | ||
300 | def cancel_delay(): | |
301 | global _delay | |
302 | if _delay is not None: | |
303 | if T._debug: print '# cancel delayed kick' | |
304 | G.source_remove(_delay) | |
305 | _delay = None | |
4f6b41b9 MW |
306 | |
307 | def netupdown(upness, reason): | |
308 | """ | |
309 | Add or kill peers according to whether the network is up or down. | |
310 | ||
311 | UPNESS is true if the network is up, or false if it's down. | |
312 | """ | |
313 | ||
314 | _kick.put((upness, reason)) | |
315 | ||
f5393555 MW |
316 | def delay_netupdown(upness, reason): |
317 | global _delay | |
318 | cancel_delay() | |
319 | def _func(): | |
320 | global _delay | |
321 | if T._debug: print '# delayed %s: %s' % (upness, reason) | |
322 | _delay = None | |
323 | netupdown(upness, reason) | |
324 | return False | |
325 | if T._debug: print '# delaying %s: %s' % (upness, reason) | |
326 | _delay = G.timeout_add(2000, _func) | |
327 | ||
2ec90437 MW |
328 | def kickpeers(): |
329 | while True: | |
330 | upness, reason = _kick.get() | |
2d4998c4 MW |
331 | if T._debug: print '# kickpeers %s: %s' % (upness, reason) |
332 | select = [] | |
f5393555 | 333 | cancel_delay() |
2ec90437 MW |
334 | |
335 | ## Make sure the configuration file is up-to-date. Don't worry if we | |
336 | ## can't do anything useful. | |
337 | try: | |
338 | CF.check() | |
339 | except Exception, exc: | |
340 | SM.warn('conntrack', 'config-file-error', | |
341 | exc.__class__.__name__, str(exc)) | |
342 | ||
343 | ## Find the current list of peers. | |
344 | peers = SM.list() | |
345 | ||
346 | ## Work out the primary IP address. | |
347 | if upness: | |
348 | addr = localaddr(CF.testaddr) | |
349 | if addr is None: | |
350 | upness = False | |
b10a8c3d MW |
351 | else: |
352 | addr = None | |
2d4998c4 MW |
353 | if not T._debug: pass |
354 | elif addr: print '# local address = %s' % straddr(addr) | |
355 | else: print '# offline' | |
2ec90437 MW |
356 | |
357 | ## Now decide what to do. | |
358 | changes = [] | |
f8d6fc7b | 359 | for g, pp in CF.groups.iteritems(): |
2d4998c4 | 360 | if T._debug: print '# check group %s' % g |
2ec90437 MW |
361 | |
362 | ## Find out which peer in the group ought to be active. | |
b10a8c3d MW |
363 | ip = None |
364 | map = {} | |
365 | want = None | |
6aa21132 | 366 | for t, p, n in pp: |
b10a8c3d MW |
367 | if p is None or not upness: |
368 | ipq = addr | |
369 | else: | |
370 | ipq = localaddr(p) | |
2d4998c4 | 371 | if T._debug: |
6aa21132 MW |
372 | info = 'peer=%s; target=%s; net=%s; local=%s' % ( |
373 | t, p or '(default)', n, straddr(ipq)) | |
b10a8c3d | 374 | if upness and ip is None and \ |
6aa21132 | 375 | ipq is not None and ipq.withinp(n): |
2d4998c4 | 376 | if T._debug: print '# %s: SELECTED' % info |
b10a8c3d | 377 | map[t] = 'up' |
2d4998c4 | 378 | select.append('%s=%s' % (g, t)) |
f2bdb96e MW |
379 | if t == 'down' or t.startswith('down/'): |
380 | want = None | |
381 | else: | |
382 | want = t | |
b10a8c3d MW |
383 | ip = ipq |
384 | else: | |
385 | map[t] = 'down' | |
2d4998c4 | 386 | if T._debug: print '# %s: skipped' % info |
2ec90437 MW |
387 | |
388 | ## Shut down the wrong ones. | |
389 | found = False | |
2d4998c4 | 390 | if T._debug: print '# peer-map = %r' % map |
2ec90437 | 391 | for p in peers: |
b10a8c3d MW |
392 | what = map.get(p, 'leave') |
393 | if what == 'up': | |
2ec90437 | 394 | found = True |
2d4998c4 | 395 | if T._debug: print '# peer %s: already up' % p |
b10a8c3d | 396 | elif what == 'down': |
cf2e4ea6 MW |
397 | def _(p = p): |
398 | try: | |
399 | SM.kill(p) | |
400 | except T.TripeError, exc: | |
401 | if exc.args[0] == 'unknown-peer': | |
402 | ## Inherently racy; don't worry about this. | |
403 | pass | |
404 | else: | |
405 | raise | |
2d4998c4 | 406 | if T._debug: print '# peer %s: bring down' % p |
cf2e4ea6 | 407 | changes.append(_) |
2ec90437 MW |
408 | |
409 | ## Start the right one if necessary. | |
7b7e3c74 | 410 | if want is not None and not found: |
cf2e4ea6 MW |
411 | def _(want = want): |
412 | try: | |
8d1d183e | 413 | list(SM.svcsubmit('connect', 'active', want)) |
cf2e4ea6 MW |
414 | except T.TripeError, exc: |
415 | SM.warn('conntrack', 'connect-failed', want, *exc.args) | |
2d4998c4 | 416 | if T._debug: print '# peer %s: bring up' % want |
cf2e4ea6 | 417 | changes.append(_) |
2ec90437 MW |
418 | |
419 | ## Commit the changes. | |
420 | if changes: | |
2d4998c4 | 421 | SM.notify('conntrack', upness and 'up' or 'down', *select + reason) |
2ec90437 MW |
422 | for c in changes: c() |
423 | ||
2ec90437 MW |
424 | ###-------------------------------------------------------------------------- |
425 | ### NetworkManager monitor. | |
426 | ||
498d9f42 MW |
427 | DBPROPS_IFACE = 'org.freedesktop.DBus.Properties' |
428 | ||
2ec90437 MW |
429 | NM_NAME = 'org.freedesktop.NetworkManager' |
430 | NM_PATH = '/org/freedesktop/NetworkManager' | |
431 | NM_IFACE = NM_NAME | |
432 | NMCA_IFACE = NM_NAME + '.Connection.Active' | |
433 | ||
2079efa1 MW |
434 | NM_STATE_CONNECTED = 3 #obsolete |
435 | NM_STATE_CONNECTED_LOCAL = 50 | |
436 | NM_STATE_CONNECTED_SITE = 60 | |
437 | NM_STATE_CONNECTED_GLOBAL = 70 | |
438 | NM_CONNSTATES = set([NM_STATE_CONNECTED, | |
439 | NM_STATE_CONNECTED_LOCAL, | |
440 | NM_STATE_CONNECTED_SITE, | |
441 | NM_STATE_CONNECTED_GLOBAL]) | |
2ec90437 MW |
442 | |
443 | class NetworkManagerMonitor (object): | |
444 | """ | |
445 | Watch NetworkManager signals for changes in network state. | |
446 | """ | |
447 | ||
448 | ## Strategy. There are two kinds of interesting state transitions for us. | |
449 | ## The first one is the global are-we-connected state, which we'll use to | |
450 | ## toggle network upness on a global level. The second is which connection | |
451 | ## has the default route, which we'll use to tweak which peer in the peer | |
452 | ## group is active. The former is most easily tracked using the signal | |
453 | ## org.freedesktop.NetworkManager.StateChanged; for the latter, we track | |
454 | ## org.freedesktop.NetworkManager.Connection.Active.PropertiesChanged and | |
455 | ## look for when a new connection gains the default route. | |
456 | ||
457 | def attach(me, bus): | |
458 | try: | |
459 | nm = bus.get_object(NM_NAME, NM_PATH) | |
498d9f42 | 460 | state = nm.Get(NM_IFACE, 'State', dbus_interface = DBPROPS_IFACE) |
2079efa1 | 461 | if state in NM_CONNSTATES: |
2ec90437 MW |
462 | netupdown(True, ['nm', 'initially-connected']) |
463 | else: | |
464 | netupdown(False, ['nm', 'initially-disconnected']) | |
bd9bd714 MW |
465 | except D.DBusException, e: |
466 | if T._debug: print '# exception attaching to network-manager: %s' % e | |
2079efa1 MW |
467 | bus.add_signal_receiver(me._nm_state, 'StateChanged', |
468 | NM_IFACE, NM_NAME, NM_PATH) | |
469 | bus.add_signal_receiver(me._nm_connchange, 'PropertiesChanged', | |
470 | NMCA_IFACE, NM_NAME, None) | |
2ec90437 MW |
471 | |
472 | def _nm_state(me, state): | |
2079efa1 | 473 | if state in NM_CONNSTATES: |
f5393555 | 474 | delay_netupdown(True, ['nm', 'connected']) |
2ec90437 | 475 | else: |
f5393555 | 476 | delay_netupdown(False, ['nm', 'disconnected']) |
2ec90437 MW |
477 | |
478 | def _nm_connchange(me, props): | |
f5393555 MW |
479 | if props.get('Default', False) or props.get('Default6', False): |
480 | delay_netupdown(True, ['nm', 'default-connection-change']) | |
2ec90437 | 481 | |
a95eb44a MW |
482 | ##-------------------------------------------------------------------------- |
483 | ### Connman monitor. | |
484 | ||
485 | CM_NAME = 'net.connman' | |
486 | CM_PATH = '/' | |
487 | CM_IFACE = 'net.connman.Manager' | |
488 | ||
489 | class ConnManMonitor (object): | |
490 | """ | |
491 | Watch ConnMan signls for changes in network state. | |
492 | """ | |
493 | ||
494 | ## Strategy. Everything seems to be usefully encoded in the `State' | |
495 | ## property. If it's `offline', `idle' or `ready' then we don't expect a | |
496 | ## network connection. During handover from one network to another, the | |
497 | ## property passes through `ready' to `online'. | |
498 | ||
499 | def attach(me, bus): | |
500 | try: | |
501 | cm = bus.get_object(CM_NAME, CM_PATH) | |
502 | props = cm.GetProperties(dbus_interface = CM_IFACE) | |
503 | state = props['State'] | |
504 | netupdown(state == 'online', ['connman', 'initially-%s' % state]) | |
bd9bd714 MW |
505 | except D.DBusException, e: |
506 | if T._debug: print '# exception attaching to connman: %s' % e | |
a95eb44a MW |
507 | bus.add_signal_receiver(me._cm_state, 'PropertyChanged', |
508 | CM_IFACE, CM_NAME, CM_PATH) | |
509 | ||
510 | def _cm_state(me, prop, value): | |
511 | if prop != 'State': return | |
f5393555 | 512 | delay_netupdown(value == 'online', ['connman', value]) |
a95eb44a | 513 | |
2ec90437 MW |
514 | ###-------------------------------------------------------------------------- |
515 | ### Maemo monitor. | |
516 | ||
517 | ICD_NAME = 'com.nokia.icd' | |
518 | ICD_PATH = '/com/nokia/icd' | |
519 | ICD_IFACE = ICD_NAME | |
520 | ||
521 | class MaemoICdMonitor (object): | |
522 | """ | |
523 | Watch ICd signals for changes in network state. | |
524 | """ | |
525 | ||
526 | ## Strategy. ICd only handles one connection at a time in steady state, | |
527 | ## though when switching between connections, it tries to bring the new one | |
528 | ## up before shutting down the old one. This makes life a bit easier than | |
529 | ## it is with NetworkManager. On the other hand, the notifications are | |
530 | ## relative to particular connections only, and the indicator that the old | |
531 | ## connection is down (`IDLE') comes /after/ the new one comes up | |
532 | ## (`CONNECTED'), so we have to remember which one is active. | |
533 | ||
534 | def attach(me, bus): | |
535 | try: | |
536 | icd = bus.get_object(ICD_NAME, ICD_PATH) | |
537 | try: | |
538 | iap = icd.get_ipinfo(dbus_interface = ICD_IFACE)[0] | |
539 | me._iap = iap | |
540 | netupdown(True, ['icd', 'initially-connected', iap]) | |
541 | except D.DBusException: | |
542 | me._iap = None | |
543 | netupdown(False, ['icd', 'initially-disconnected']) | |
bd9bd714 MW |
544 | except D.DBusException, e: |
545 | if T._debug: print '# exception attaching to icd: %s' % e | |
2ec90437 MW |
546 | me._iap = None |
547 | bus.add_signal_receiver(me._icd_state, 'status_changed', ICD_IFACE, | |
548 | ICD_NAME, ICD_PATH) | |
549 | ||
550 | def _icd_state(me, iap, ty, state, hunoz): | |
551 | if state == 'CONNECTED': | |
552 | me._iap = iap | |
f5393555 | 553 | delay_netupdown(True, ['icd', 'connected', iap]) |
2ec90437 MW |
554 | elif state == 'IDLE' and iap == me._iap: |
555 | me._iap = None | |
f5393555 | 556 | delay_netupdown(False, ['icd', 'idle']) |
2ec90437 MW |
557 | |
558 | ###-------------------------------------------------------------------------- | |
559 | ### D-Bus connection tracking. | |
560 | ||
561 | class DBusMonitor (object): | |
562 | """ | |
563 | Maintains a connection to the system D-Bus, and watches for signals. | |
564 | ||
565 | If the connection is initially down, or drops for some reason, we retry | |
566 | periodically (every five seconds at the moment). If the connection | |
567 | resurfaces, we reattach the monitors. | |
568 | """ | |
569 | ||
570 | def __init__(me): | |
571 | """ | |
572 | Initialise the object and try to establish a connection to the bus. | |
573 | """ | |
574 | me._mons = [] | |
575 | me._loop = D.mainloop.glib.DBusGMainLoop() | |
7bfa1e06 | 576 | me._state = 'startup' |
2ec90437 MW |
577 | me._reconnect() |
578 | ||
579 | def addmon(me, mon): | |
580 | """ | |
581 | Add a monitor object to watch for signals. | |
582 | ||
583 | MON.attach(BUS) is called, with BUS being the connection to the system | |
584 | bus. MON should query its service's current status and watch for | |
585 | relevant signals. | |
586 | """ | |
587 | me._mons.append(mon) | |
588 | if me._bus is not None: | |
589 | mon.attach(me._bus) | |
590 | ||
16650038 | 591 | def _reconnect(me, hunoz = None): |
2ec90437 MW |
592 | """ |
593 | Start connecting to the bus. | |
594 | ||
595 | If we fail the first time, retry periodically. | |
596 | """ | |
7bfa1e06 MW |
597 | if me._state == 'startup': |
598 | T.aside(SM.notify, 'conntrack', 'dbus-connection', 'startup') | |
599 | elif me._state == 'connected': | |
600 | T.aside(SM.notify, 'conntrack', 'dbus-connection', 'lost') | |
601 | else: | |
602 | T.aside(SM.notify, 'conntrack', 'dbus-connection', | |
603 | 'state=%s' % me._state) | |
604 | me._state == 'reconnecting' | |
2ec90437 MW |
605 | me._bus = None |
606 | if me._try_connect(): | |
607 | G.timeout_add_seconds(5, me._try_connect) | |
608 | ||
609 | def _try_connect(me): | |
610 | """ | |
611 | Actually make a connection attempt. | |
612 | ||
613 | If we succeed, attach the monitors. | |
614 | """ | |
615 | try: | |
7bfa1e06 MW |
616 | addr = OS.getenv('TRIPE_CONNTRACK_BUS') |
617 | if addr == 'SESSION': | |
618 | bus = D.SessionBus(mainloop = me._loop, private = True) | |
619 | elif addr is not None: | |
620 | bus = D.bus.BusConnection(addr, mainloop = me._loop) | |
621 | else: | |
622 | bus = D.SystemBus(mainloop = me._loop, private = True) | |
623 | for m in me._mons: | |
624 | m.attach(bus) | |
625 | except D.DBusException, e: | |
2ec90437 MW |
626 | return True |
627 | me._bus = bus | |
7bfa1e06 | 628 | me._state = 'connected' |
2ec90437 | 629 | bus.call_on_disconnection(me._reconnect) |
7bfa1e06 | 630 | T.aside(SM.notify, 'conntrack', 'dbus-connection', 'connected') |
2ec90437 MW |
631 | return False |
632 | ||
633 | ###-------------------------------------------------------------------------- | |
634 | ### TrIPE service. | |
635 | ||
636 | class GIOWatcher (object): | |
637 | """ | |
638 | Monitor I/O events using glib. | |
639 | """ | |
640 | def __init__(me, conn, mc = G.main_context_default()): | |
641 | me._conn = conn | |
642 | me._watch = None | |
643 | me._mc = mc | |
644 | def connected(me, sock): | |
645 | me._watch = G.io_add_watch(sock, G.IO_IN, | |
646 | lambda *hunoz: me._conn.receive()) | |
647 | def disconnected(me): | |
648 | G.source_remove(me._watch) | |
649 | me._watch = None | |
650 | def iterate(me): | |
651 | me._mc.iteration(True) | |
652 | ||
653 | SM.iowatch = GIOWatcher(SM) | |
654 | ||
655 | def init(): | |
656 | """ | |
657 | Service initialization. | |
658 | ||
659 | Add the D-Bus monitor here, because we might send commands off immediately, | |
660 | and we want to make sure the server connection is up. | |
661 | """ | |
29807d89 | 662 | global DBM |
22b47552 | 663 | T.Coroutine(kickpeers, name = 'kickpeers').switch() |
29807d89 MW |
664 | DBM = DBusMonitor() |
665 | DBM.addmon(NetworkManagerMonitor()) | |
a95eb44a | 666 | DBM.addmon(ConnManMonitor()) |
29807d89 | 667 | DBM.addmon(MaemoICdMonitor()) |
f5393555 MW |
668 | G.timeout_add_seconds(30, lambda: (_delay is not None or |
669 | netupdown(True, ['interval-timer']) or | |
670 | True)) | |
2ec90437 MW |
671 | |
672 | def parse_options(): | |
673 | """ | |
674 | Parse the command-line options. | |
675 | ||
676 | Automatically changes directory to the requested configdir, and turns on | |
677 | debugging. Returns the options object. | |
678 | """ | |
679 | op = OptionParser(usage = '%prog [-a FILE] [-d DIR]', | |
680 | version = '%%prog %s' % VERSION) | |
681 | ||
682 | op.add_option('-a', '--admin-socket', | |
683 | metavar = 'FILE', dest = 'tripesock', default = T.tripesock, | |
684 | help = 'Select socket to connect to [default %default]') | |
685 | op.add_option('-d', '--directory', | |
686 | metavar = 'DIR', dest = 'dir', default = T.configdir, | |
687 | help = 'Select current diretory [default %default]') | |
688 | op.add_option('-c', '--config', | |
689 | metavar = 'FILE', dest = 'conf', default = 'conntrack.conf', | |
690 | help = 'Select configuration [default %default]') | |
691 | op.add_option('--daemon', dest = 'daemon', | |
692 | default = False, action = 'store_true', | |
693 | help = 'Become a daemon after successful initialization') | |
694 | op.add_option('--debug', dest = 'debug', | |
695 | default = False, action = 'store_true', | |
696 | help = 'Emit debugging trace information') | |
697 | op.add_option('--startup', dest = 'startup', | |
698 | default = False, action = 'store_true', | |
699 | help = 'Being called as part of the server startup') | |
700 | ||
701 | opts, args = op.parse_args() | |
702 | if args: op.error('no arguments permitted') | |
703 | OS.chdir(opts.dir) | |
704 | T._debug = opts.debug | |
705 | return opts | |
706 | ||
707 | ## Service table, for running manually. | |
708 | def cmd_updown(upness): | |
709 | return lambda *args: T.defer(netupdown, upness, ['manual'] + list(args)) | |
710 | service_info = [('conntrack', VERSION, { | |
711 | 'up': (0, None, '', cmd_updown(True)), | |
2d4998c4 MW |
712 | 'down': (0, None, '', cmd_updown(False)), |
713 | 'show-config': (0, 0, '', cmd_showconfig), | |
714 | 'show-groups': (0, 0, '', cmd_showgroups), | |
715 | 'show-group': (1, 1, 'GROUP', cmd_showgroup) | |
2ec90437 MW |
716 | })] |
717 | ||
718 | if __name__ == '__main__': | |
719 | opts = parse_options() | |
720 | CF = Config(opts.conf) | |
721 | T.runservices(opts.tripesock, service_info, | |
722 | init = init, daemon = opts.daemon) | |
723 | ||
724 | ###----- That's all, folks -------------------------------------------------- |