mdw@git.distorted.org.uk Git - tripe/blob - mon/tripemon.in

   1 #! @PYTHON@
   2 ### -*- mode: python; coding: utf-8 -*-
   3 ###
   4 ### Graphical monitor for tripe server
   5 ###
   6 ### (c) 2007 Straylight/Edgeware
   7 ###
   8
   9 ###----- Licensing notice ---------------------------------------------------
  10 ###
  11 ### This file is part of Trivial IP Encryption (TrIPE).
  12 ###
  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.
  17 ###
  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.
  22 ###
  23 ### You should have received a copy of the GNU General Public License
  24 ### along with TrIPE.  If not, see <https://www.gnu.org/licenses/>.
  25
  26 ###--------------------------------------------------------------------------
  27 ### Dependencies.
  28
  29 import socket as S
  30 import tripe as T
  31 import mLib as M
  32 from sys import argv, exit, stdin, stdout, stderr, exc_info, excepthook
  33 import os as OS
  34 from os import environ
  35 import math as MATH
  36 import sets as SET
  37 from optparse import OptionParser
  38 import time as TIME
  39 import re as RX
  40 from cStringIO import StringIO
  41
  42 try:
  43   if OS.getenv('TRIPEMON_FORCE_GI'): raise ImportError()
  44   import pygtk
  45   pygtk.require('2.0')
  46   import gtk as G
  47   import gobject as GO
  48   import gtk.gdk as GDK
  49   GL = GO
  50   GDK.KEY_Escape = G.keysyms.Escape
  51   def raise_window(w): w.window.raise_()
  52   combo_box_text = G.combo_box_new_text
  53   def set_entry_bg(e, c): e.modify_base(G.STATE_NORMAL, c)
  54 except ImportError:
  55   from gi.repository import GObject as GO, GLib as GL, Gtk as G, Gdk as GDK
  56   G.WINDOW_TOPLEVEL = G.WindowType.TOPLEVEL
  57   G.EXPAND = G.AttachOptions.EXPAND
  58   G.SHRINK = G.AttachOptions.SHRINK
  59   G.FILL = G.AttachOptions.FILL
  60   G.SORT_ASCENDING = G.SortType.ASCENDING
  61   G.POLICY_AUTOMATIC = G.PolicyType.AUTOMATIC
  62   G.SHADOW_IN = G.ShadowType.IN
  63   G.SELECTION_NONE = G.SelectionMode.NONE
  64   G.DIALOG_MODAL = G.DialogFlags.MODAL
  65   G.RESPONSE_CANCEL = G.ResponseType.CANCEL
  66   G.RESPONSE_NONE = G.ResponseType.NONE
  67   def raise_window(w): getattr(w.get_window(), 'raise')()
  68   combo_box_text = G.ComboBoxText
  69   def set_entry_bg(e, c): e.modify_bg(G.StateType.NORMAL, c)
  70
  71 if OS.getenv('TRIPE_DEBUG_MONITOR') is not None:
  72   T._debug = 1
  73
  74 ###--------------------------------------------------------------------------
  75 ### Doing things later.
  76
  77 def uncaught():
  78   """Report an uncaught exception."""
  79   excepthook(*exc_info())
  80
  81 def xwrap(func):
  82   """
  83   Return a function which behaves like FUNC, but reports exceptions via
  84   uncaught.
  85   """
  86   def _(*args, **kw):
  87     try:
  88       return func(*args, **kw)
  89     except SystemExit:
  90       raise
  91     except:
  92       uncaught()
  93       raise
  94   return _
  95
  96 def invoker(func, *args, **kw):
  97   """
  98   Return a function which throws away its arguments and calls
  99   FUNC(*ARGS, **KW).
 100
 101   If for loops worked by binding rather than assignment then we wouldn't need
 102   this kludge.
 103   """
 104   return lambda *hunoz, **hukairz: xwrap(func)(*args, **kw)
 105
 106 def cr(func, *args, **kw):
 107   """Return a function which invokes FUNC(*ARGS, **KW) in a coroutine."""
 108   name = T.funargstr(func, args, kw)
 109   return lambda *hunoz, **hukairz: \
 110          T.Coroutine(xwrap(func), name = name).switch(*args, **kw)
 111
 112 def incr(func):
 113   """Decorator: runs its function in a coroutine of its own."""
 114   return lambda *args, **kw: \
 115          (T.Coroutine(func, name = T.funargstr(func, args, kw))
 116           .switch(*args, **kw))
 117
 118 ###--------------------------------------------------------------------------
 119 ### Random bits of infrastructure.
 120
 121 ## Program name, shorn of extraneous stuff.
 122 M.ego(argv[0])
 123 moan = M.moan
 124 die = M.die
 125
 126 class HookList (object):
 127   """
 128   Notification hook list.
 129
 130   Other objects can add functions onto the hook list.  When the hook list is
 131   run, the functions are called in the order in which they were registered.
 132   """
 133
 134   def __init__(me):
 135     """Basic initialization: create the hook list."""
 136     me.list = []
 137
 138   def add(me, func, obj):
 139     """Add FUNC to the list of hook functions."""
 140     me.list.append((obj, func))
 141
 142   def prune(me, obj):
 143     """Remove hook functions registered with the given OBJ."""
 144     new = []
 145     for o, f in me.list:
 146       if o is not obj:
 147         new.append((o, f))
 148     me.list = new
 149
 150   def run(me, *args, **kw):
 151     """Invoke the hook functions with arguments *ARGS and **KW."""
 152     for o, hook in me.list:
 153       rc = hook(*args, **kw)
 154       if rc is not None: return rc
 155     return None
 156
 157 class HookClient (object):
 158   """
 159   Mixin for classes which are clients of hooks.
 160
 161   It keeps track of the hooks it's a client of, and has the ability to
 162   extricate itself from all of them.  This is useful because weak objects
 163   don't seem to work well.
 164   """
 165   def __init__(me):
 166     """Basic initialization."""
 167     me.hooks = SET.Set()
 168
 169   def hook(me, hk, func):
 170     """Add FUNC to the hook list HK."""
 171     hk.add(func, me)
 172     me.hooks.add(hk)
 173
 174   def unhook(me, hk):
 175     """Remove myself from the hook list HK."""
 176     hk.prune(me)
 177     me.hooks.discard(hk)
 178
 179   def unhookall(me):
 180     """Remove myself from all hook lists."""
 181     for hk in me.hooks:
 182       hk.prune(me)
 183     me.hooks.clear()
 184
 185 class struct (object):
 186   """A very simple dumb data container object."""
 187   def __init__(me, **kw):
 188     me.__dict__.update(kw)
 189
 190 ## Matches ISO date format yyyy-mm-ddThh:mm:ss.
 191 rx_time = RX.compile(r'^(\d+)-(\d+)-(\d+)T(\d+):(\d+):(\d+)$')
 192
 193 ###--------------------------------------------------------------------------
 194 ### Connections.
 195
 196 class GIOWatcher (object):
 197   """
 198   Monitor I/O events using glib.
 199   """
 200   def __init__(me, conn, mc = GL.main_context_default()):
 201     me._conn = conn
 202     me._watch = None
 203     me._mc = mc
 204   def connected(me, sock):
 205     me._watch = GL.io_add_watch(sock, GL.IO_IN,
 206                                 lambda *hunoz: me._conn.receive())
 207   def disconnected(me):
 208     GL.source_remove(me._watch)
 209     me._watch = None
 210   def iterate(me):
 211     me._mc.iteration(True)
 212
 213 class Connection (T.TripeCommandDispatcher):
 214   """
 215   The main connection to the server.
 216
 217   The improvement over the TripeCommandDispatcher is that the Connection
 218   provides hooklists for NOTE, WARN and TRACE messages, and for connect and
 219   disconnect events.
 220
 221   This class knows about the Glib I/O dispatcher system, and plugs into it.
 222
 223   Hooks:
 224
 225     * connecthook(): a connection to the server has been established
 226     * disconnecthook(): the connection has been dropped
 227     * notehook(TOKEN, ...): server issued a notification
 228     * warnhook(TOKEN, ...): server issued a warning
 229     * tracehook(TOKEN, ...): server issued a trace message
 230   """
 231
 232   def __init__(me, socket):
 233     """Create a new Connection."""
 234     T.TripeCommandDispatcher.__init__(me, socket)
 235     me.connecthook = HookList()
 236     me.disconnecthook = HookList()
 237     me.notehook = HookList()
 238     me.warnhook = HookList()
 239     me.tracehook = HookList()
 240     me.handler['NOTE'] = lambda _, *rest: me.notehook.run(*rest)
 241     me.handler['WARN'] = lambda _, *rest: me.warnhook.run(*rest)
 242     me.handler['TRACE'] = lambda _, *rest: me.tracehook.run(*rest)
 243     me.iowatch = GIOWatcher(me)
 244
 245   def connected(me):
 246     """Handles reconnection to the server, and signals the hook."""
 247     T.TripeCommandDispatcher.connected(me)
 248     me.connecthook.run()
 249
 250   def disconnected(me, reason):
 251     """Handles disconnection from the server, and signals the hook."""
 252     me.disconnecthook.run(reason)
 253     T.TripeCommandDispatcher.disconnected(me, reason)
 254
 255 ###--------------------------------------------------------------------------
 256 ### Watching the peers go by.
 257
 258 class MonitorObject (object):
 259   """
 260   An object with hooks it uses to notify others of changes in its state.
 261   These are the objects tracked by the MonitorList class.
 262
 263   The object has a name, an `aliveness' state indicated by the `alivep' flag,
 264   and hooks.
 265
 266   Hooks:
 267
 268     * changehook(): the object has changed its state
 269     * deadhook(): the object has been destroyed
 270
 271   Subclass responsibilities:
 272
 273     * update(INFO): update internal state based on the provided INFO, and run
 274       the changehook.
 275   """
 276
 277   def __init__(me, name):
 278     """Initialize the object with the given NAME."""
 279     me.name = name
 280     me.deadhook = HookList()
 281     me.changehook = HookList()
 282     me.alivep = True
 283
 284   def dead(me):
 285     """Mark the object as dead; invoke the deadhook."""
 286     me.alivep = False
 287     me.deadhook.run()
 288
 289 class Peer (MonitorObject):
 290   """
 291   An object representing a connected peer.
 292
 293   As well as the standard hooks, a peer has a pinghook, which isn't used
 294   directly by this class.
 295
 296   Hooks:
 297
 298     * pinghook(): invoked by the Pinger (q.v.) when ping statistics change
 299
 300   Attributes provided are:
 301
 302     * addr = a vaguely human-readable representation of the peer's address
 303     * ifname = the peer's interface name
 304     * tunnel = the kind of tunnel the peer is using
 305     * keepalive = the peer's keepalive interval in seconds
 306     * ping['EPING'] and ping['PING'] = pingstate statistics (maintained by
 307       the Pinger)
 308   """
 309
 310   def __init__(me, name):
 311     """Initialize the object with the given name."""
 312     MonitorObject.__init__(me, name)
 313     me.pinghook = HookList()
 314     me.__dict__.update(conn.algs(name))
 315     me.update()
 316
 317   def update(me, hunoz = None):
 318     """Update the peer, fetching information about it from the server."""
 319     me._setaddr(conn.addr(me.name))
 320     me.ifname = conn.ifname(me.name)
 321     me.__dict__.update(conn.peerinfo(me.name))
 322     me.changehook.run()
 323
 324   def _setaddr(me, addr):
 325     """Set the peer's address."""
 326     if addr[0] == 'INET':
 327       ipaddr, port = addr[1:]
 328       try:
 329         name = S.gethostbyaddr(ipaddr)[0]
 330         me.addr = 'INET %s:%s [%s]' % (name, port, ipaddr)
 331       except S.herror:
 332         me.addr = 'INET %s:%s' % (ipaddr, port)
 333     else:
 334       me.addr = ' '.join(addr)
 335
 336   def setaddr(me, addr):
 337     """Informs the object of a change to its address to ADDR."""
 338     me._setaddr(addr)
 339     me.changehook.run()
 340
 341   def setifname(me, newname):
 342     """Informs the object of a change to its interface name to NEWNAME."""
 343     me.ifname = newname
 344     me.changehook.run()
 345
 346 class Service (MonitorObject):
 347   """
 348   Represents a service.
 349
 350   Additional attributes are:
 351
 352     * version = the service version
 353   """
 354   def __init__(me, name, version):
 355     MonitorObject.__init__(me, name)
 356     me.version = version
 357
 358   def update(me, version):
 359     """Tell the Service that its version has changed to VERSION."""
 360     me.version = version
 361     me.changehook.run()
 362
 363 class MonitorList (object):
 364   """
 365   Maintains a collection of MonitorObjects.
 366
 367   The MonitorList can be indexed by name to retrieve the individual objects;
 368   iteration generates the individual objects.  More complicated operations
 369   can be done on the `table' dictionary directly.
 370
 371   Hooks addhook(OBJ) and delhook(OBJ) are invoked when objects are added or
 372   deleted.
 373
 374   Subclass responsibilities:
 375
 376     * list(): return a list of (NAME, INFO) pairs.
 377
 378     * make(NAME, INFO): returns a new MonitorObject for the given NAME; INFO
 379       is from the output of list().
 380   """
 381
 382   def __init__(me):
 383     """Initialize a new MonitorList."""
 384     me.table = {}
 385     me.addhook = HookList()
 386     me.delhook = HookList()
 387
 388   def update(me):
 389     """
 390     Refresh the list of objects:
 391
 392     We add new object which have appeared, delete ones which have vanished,
 393     and update any which persist.
 394     """
 395     new = {}
 396     for name, stuff in me.list():
 397       new[name] = True
 398       me.add(name, stuff)
 399     for name in me.table.copy():
 400       if name not in new:
 401         me.remove(name)
 402
 403   def add(me, name, stuff):
 404     """
 405     Add a new object created by make(NAME, STUFF) if it doesn't already
 406     exist.  If it does, update it.
 407     """
 408     if name not in me.table:
 409       obj = me.make(name, stuff)
 410       me.table[name] = obj
 411       me.addhook.run(obj)
 412     else:
 413       me.table[name].update(stuff)
 414
 415   def remove(me, name):
 416     """
 417     Remove the object called NAME from the list.
 418
 419     The object becomes dead.
 420     """
 421     if name in me.table:
 422       obj = me.table[name]
 423       del me.table[name]
 424       me.delhook.run(obj)
 425       obj.dead()
 426
 427   def __getitem__(me, name):
 428     """Retrieve the object called NAME."""
 429     return me.table[name]
 430
 431   def __iter__(me):
 432     """Iterate over the objects."""
 433     return me.table.itervalues()
 434
 435 class PeerList (MonitorList):
 436   """The list of the known peers."""
 437   def list(me):
 438     return [(name, None) for name in conn.list()]
 439   def make(me, name, stuff):
 440     return Peer(name)
 441
 442 class ServiceList (MonitorList):
 443   """The list of the registered services."""
 444   def list(me):
 445     return conn.svclist()
 446   def make(me, name, stuff):
 447     return Service(name, stuff)
 448
 449 class Monitor (HookClient):
 450   """
 451   The main monitor: keeps track of the changes happening to the server.
 452
 453   Exports the peers, services MonitorLists, and a (plain Python) list
 454   autopeers of peers which the connect service knows how to start by name.
 455
 456   Hooks provided:
 457
 458     * autopeershook(): invoked when the auto-peers list changes.
 459   """
 460   def __init__(me):
 461     """Initialize the Monitor."""
 462     HookClient.__init__(me)
 463     me.peers = PeerList()
 464     me.services = ServiceList()
 465     me.hook(conn.connecthook, me._connected)
 466     me.hook(conn.notehook, me._notify)
 467     me.autopeershook = HookList()
 468     me.autopeers = None
 469
 470   def _connected(me):
 471     """Handle a successful connection by starting the setup coroutine."""
 472     me._setup()
 473
 474   @incr
 475   def _setup(me):
 476     """Coroutine function: initialize for a new connection."""
 477     conn.watch('-A+wnt')
 478     me.peers.update()
 479     me.services.update()
 480     me._updateautopeers()
 481
 482   def _updateautopeers(me):
 483     """Update the auto-peers list from the connect service."""
 484     if 'connect' in me.services.table:
 485       me.autopeers = [' '.join(line)
 486                       for line in conn.svcsubmit('connect', 'list-active')]
 487       me.autopeers.sort()
 488     else:
 489       me.autopeers = None
 490     me.autopeershook.run()
 491
 492   def _notify(me, code, *rest):
 493     """
 494     Handle notifications from the server.
 495
 496     ADD, KILL and NEWIFNAME notifications get passed up to the PeerList;
 497     SVCCLAIM and SVCRELEASE get passed up to the ServiceList.  Finally,
 498     peerdb-update notifications from the watch service cause us to refresh
 499     the auto-peers list.
 500     """
 501     if code == 'ADD':
 502       T.aside(me.peers.add, rest[0], None)
 503     elif code == 'KILL':
 504       T.aside(me.peers.remove, rest[0])
 505     elif code == 'NEWIFNAME':
 506       try:
 507         me.peers[rest[0]].setifname(rest[2])
 508       except KeyError:
 509         pass
 510     elif code == 'NEWADDR':
 511       try:
 512         me.peers[rest[0]].setaddr(rest[1:])
 513       except KeyError:
 514         pass
 515     elif code == 'SVCCLAIM':
 516       T.aside(me.services.add, rest[0], rest[1])
 517       if rest[0] == 'connect':
 518         T.aside(me._updateautopeers)
 519     elif code == 'SVCRELEASE':
 520       T.aside(me.services.remove, rest[0])
 521       if rest[0] == 'connect':
 522         T.aside(me._updateautopeers)
 523     elif code == 'USER':
 524       if not rest: return
 525       if rest[0] == 'watch' and \
 526          rest[1] == 'peerdb-update':
 527         T.aside(me._updateautopeers)
 528
 529 ###--------------------------------------------------------------------------
 530 ### Window management cruft.
 531
 532 class MyWindowMixin (G.Window, HookClient):
 533   """
 534   Mixin for windows which call a closehook when they're destroyed.  It's also
 535   a hookclient, and will release its hooks when it's destroyed.
 536
 537   Hooks:
 538
 539     * closehook(): called when the window is closed.
 540   """
 541
 542   def mywininit(me):
 543     """Initialization function.  Note that it's not called __init__!"""
 544     me.closehook = HookList()
 545     HookClient.__init__(me)
 546     me.connect('destroy', invoker(me.close))
 547
 548   def close(me):
 549     """Close the window, invoking the closehook and releasing all hooks."""
 550     me.closehook.run()
 551     me.destroy()
 552     me.unhookall()
 553
 554 class MyWindow (MyWindowMixin):
 555   """A version of MyWindowMixin suitable as a single parent class."""
 556   def __init__(me, kind = G.WINDOW_TOPLEVEL):
 557     G.Window.__init__(me, kind)
 558     me.mywininit()
 559
 560 class TrivialWindowMixin (MyWindowMixin):
 561   """A simple window which you can close with Escape."""
 562   def mywininit(me):
 563     super(TrivialWindowMixin, me).mywininit()
 564     me.connect('key-press-event', me._keypress)
 565   def _keypress(me, _, ev):
 566     if ev.keyval == GDK.KEY_Escape: me.destroy()
 567
 568 class TrivialWindow (MyWindow, TrivialWindowMixin):
 569   pass
 570
 571 class MyDialog (G.Dialog, MyWindowMixin, HookClient):
 572   """A dialogue box with a closehook and sensible button binding."""
 573
 574   def __init__(me, title = None, flags = 0, buttons = []):
 575     """
 576     The BUTTONS are a list of (STOCKID, THUNK) pairs: call the appropriate
 577     THUNK when the button is pressed.  The other arguments are just like
 578     GTK's Dialog class.
 579     """
 580     i = 0
 581     br = []
 582     me.rmap = []
 583     for b, f in buttons:
 584       br.append(b)
 585       br.append(i)
 586       me.rmap.append(f)
 587       i += 1
 588     G.Dialog.__init__(me, title, None, flags, tuple(br))
 589     me.mywininit()
 590     me.set_default_response(i - 1)
 591     me.connect('response', me.respond)
 592
 593   def respond(me, hunoz, rid, *hukairz):
 594     """Dispatch responses to the appropriate thunks."""
 595     if rid >= 0: me.rmap[rid]()
 596
 597 def makeactiongroup(name, acts):
 598   """
 599   Creates an ActionGroup called NAME.
 600
 601   ACTS is a list of tuples containing:
 602
 603     * ACT: an action name
 604     * LABEL: the label string for the action
 605     * ACCEL: accelerator string, or None
 606     * FUNC: thunk to call when the action is invoked
 607   """
 608   actgroup = G.ActionGroup(name)
 609   for act, label, accel, func in acts:
 610     a = G.Action(act, label, None, None)
 611     if func: a.connect('activate', invoker(func))
 612     actgroup.add_action_with_accel(a, accel)
 613   return actgroup
 614
 615 class GridPacker (G.Table):
 616   """
 617   Like a Table, but with more state: makes filling in the widgets easier.
 618   """
 619
 620   def __init__(me):
 621     """Initialize a new GridPacker."""
 622     G.Table.__init__(me)
 623     me.row = 0
 624     me.col = 0
 625     me.rows = 1
 626     me.cols = 1
 627     me.set_border_width(4)
 628     me.set_col_spacings(4)
 629     me.set_row_spacings(4)
 630
 631   def pack(me, w, width = 1, newlinep = False,
 632            xopt = G.EXPAND | G.FILL | G.SHRINK, yopt = 0,
 633            xpad = 0, ypad = 0):
 634     """
 635     Packs a new widget.
 636
 637     W is the widget to add.  XOPY, YOPT, XPAD and YPAD are as for Table.
 638     WIDTH is how many cells to take up horizontally.  NEWLINEP is whether to
 639     start a new line for this widget.  Returns W.
 640     """
 641     if newlinep:
 642       me.row += 1
 643       me.col = 0
 644     bot = me.row + 1
 645     right = me.col + width
 646     if bot > me.rows or right > me.cols:
 647       if bot > me.rows: me.rows = bot
 648       if right > me.cols: me.cols = right
 649       me.resize(me.rows, me.cols)
 650     me.attach(w, me.col, me.col + width, me.row, me.row + 1,
 651               xopt, yopt, xpad, ypad)
 652     me.col += width
 653     return w
 654
 655   def labelled(me, lab, w, newlinep = False, **kw):
 656     """
 657     Packs a labelled widget.
 658
 659     Other arguments are as for pack.  Returns W.
 660     """
 661     label = G.Label(lab + ' ')
 662     label.set_alignment(1.0, 0)
 663     me.pack(label, newlinep = newlinep, xopt = G.FILL)
 664     me.pack(w, **kw)
 665     return w
 666
 667   def info(me, label, text = None, len = 18, **kw):
 668     """
 669     Packs an information widget with a label.
 670
 671     LABEL is the label; TEXT is the initial text; LEN is the estimated length
 672     in characters.  Returns the entry widget.
 673     """
 674     e = G.Label()
 675     if text is not None: e.set_text(text)
 676     e.set_width_chars(len)
 677     e.set_selectable(True)
 678     e.set_alignment(0.0, 0.5)
 679     me.labelled(label, e, **kw)
 680     return e
 681
 682 class WindowSlot (HookClient):
 683   """
 684   A place to store a window -- specificially a MyWindowMixin.
 685
 686   If the window is destroyed, remember this; when we come to open the window,
 687   raise it if it already exists; otherwise make a new one.
 688   """
 689   def __init__(me, createfunc):
 690     """
 691     Constructor: CREATEFUNC must return a new Window which supports the
 692     closehook protocol.
 693     """
 694     HookClient.__init__(me)
 695     me.createfunc = createfunc
 696     me.window = None
 697
 698   def open(me):
 699     """Opens the window, creating it if necessary."""
 700     if me.window:
 701       raise_window(me.window)
 702     else:
 703       me.window = me.createfunc()
 704       me.hook(me.window.closehook, me.closed)
 705
 706   def closed(me):
 707     """Handles the window being closed."""
 708     me.unhook(me.window.closehook)
 709     me.window = None
 710
 711 class MyTreeView (G.TreeView):
 712   def __init__(me, model):
 713     G.TreeView.__init__(me, model)
 714     me.set_rules_hint(True)
 715
 716 class MyScrolledWindow (G.ScrolledWindow):
 717   def __init__(me):
 718     G.ScrolledWindow.__init__(me)
 719     me.set_policy(G.POLICY_AUTOMATIC, G.POLICY_AUTOMATIC)
 720     me.set_shadow_type(G.SHADOW_IN)
 721
 722 ## Matches a signed integer.
 723 rx_num = RX.compile(r'^[-+]?\d+$')
 724
 725 ## The colour red.
 726 c_red = GDK.color_parse('#ff6666')
 727
 728 class ValidationError (Exception):
 729   """Raised by ValidatingEntry.get_text() if the text isn't valid."""
 730   pass
 731
 732 class ValidatingEntry (G.Entry):
 733   """
 734   Like an Entry, but makes the text go red if the contents are invalid.
 735
 736   If get_text is called, and the text is invalid, ValidationError is raised.
 737   The attribute validp reflects whether the contents are currently valid.
 738   """
 739
 740   def __init__(me, valid, text = '', size = -1, *arg, **kw):
 741     """
 742     Make a validating Entry.
 743
 744     VALID is a regular expression or a predicate on strings.  TEXT is the
 745     default text to insert.  SIZE is the size of the box to set, in
 746     characters (ish).  Other arguments are passed to Entry.
 747     """
 748     G.Entry.__init__(me, *arg, **kw)
 749     me.connect("changed", me._check)
 750     me.connect("state-changed", me._check)
 751     if callable(valid):
 752       me.validate = valid
 753     else:
 754       me.validate = RX.compile(valid).match
 755     me.ensure_style()
 756     if size != -1: me.set_width_chars(size)
 757     me.set_activates_default(True)
 758     me.set_text(text)
 759     me._check()
 760
 761   def _check(me, *hunoz):
 762     """Check the current text and update validp and the text colour."""
 763     if me.validate(G.Entry.get_text(me)):
 764       me.validp = True
 765       set_entry_bg(me, None)
 766     else:
 767       me.validp = False
 768       set_entry_bg(me, me.is_sensitive() and c_red or None)
 769
 770   def get_text(me):
 771     """
 772     Return the text in the Entry if it's valid.  If it isn't, raise
 773     ValidationError.
 774     """
 775     if not me.validp:
 776       raise ValidationError()
 777     return G.Entry.get_text(me)
 778
 779 def numericvalidate(min = None, max = None):
 780   """
 781   Return a validation function for numbers.
 782
 783   Entry must consist of an optional sign followed by digits, and the
 784   resulting integer must be within the given bounds.
 785   """
 786   return lambda x: (rx_num.match(x) and
 787                     (min is None or long(x) >= min) and
 788                     (max is None or long(x) <= max))
 789
 790 ###--------------------------------------------------------------------------
 791 ### Various minor dialog boxen.
 792
 793 GPL = """\
 794 TrIPE is free software: you can redistribute it and/or modify it under
 795 the terms of the GNU General Public License as published by the Free
 796 Software Foundation; either version 3 of the License, or (at your
 797 option) any later version.
 798
 799 TrIPE is distributed in the hope that it will be useful, but WITHOUT
 800 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 801 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 802 for more details.
 803
 804 You should have received a copy of the GNU General Public License
 805 along with TrIPE.  If not, see <https://www.gnu.org/licenses/>."""
 806
 807 class AboutBox (G.AboutDialog, TrivialWindowMixin):
 808   """The program `About' box."""
 809   def __init__(me):
 810     G.AboutDialog.__init__(me)
 811     me.mywininit()
 812     me.set_name('TrIPEmon')
 813     me.set_version(T.VERSION)
 814     me.set_license(GPL)
 815     me.set_authors(['Mark Wooding <mdw@distorted.org.uk>'])
 816     me.set_comments('A graphical monitor for the TrIPE VPN server')
 817     me.set_copyright('Copyright © 2006-2008 Straylight/Edgeware')
 818     me.connect('response', me.respond)
 819     me.show()
 820   def respond(me, hunoz, rid, *hukairz):
 821     if rid == G.RESPONSE_CANCEL:
 822       me.close()
 823 aboutbox = WindowSlot(AboutBox)
 824
 825 def moanbox(msg):
 826   """Report an error message in a window."""
 827   d = G.Dialog('Error from %s' % M.quis,
 828                flags = G.DIALOG_MODAL,
 829                buttons = ((G.STOCK_OK, G.RESPONSE_NONE)))
 830   label = G.Label(msg)
 831   label.set_padding(20, 20)
 832   d.vbox.pack_start(label, True, True, 0)
 833   label.show()
 834   d.run()
 835   d.destroy()
 836
 837 def unimplemented(*hunoz):
 838   """Indicator of laziness."""
 839   moanbox("I've not written that bit yet.")
 840
 841 ###--------------------------------------------------------------------------
 842 ### Logging windows.
 843
 844 class LogModel (G.ListStore):
 845   """
 846   A simple list of log messages, usable as the model for a TreeView.
 847
 848   The column headings are stored in the `cols' attribute.
 849   """
 850
 851   def __init__(me, columns):
 852     """
 853     COLUMNS must be a list of column name strings.  We add a time column to
 854     the left.
 855     """
 856     me.cols = ('Time',) + columns
 857     G.ListStore.__init__(me, *((GO.TYPE_STRING,) * len(me.cols)))
 858
 859   def add(me, *entries):
 860     """
 861     Adds a new log message, with a timestamp.
 862
 863     The ENTRIES are the contents for the list columns.
 864     """
 865     now = TIME.strftime('%Y-%m-%d %H:%M:%S')
 866     me.append((now, ) + entries)
 867
 868 class TraceLogModel (LogModel):
 869   """Log model for trace messages."""
 870   def __init__(me):
 871     LogModel.__init__(me, ('Message',))
 872   def notify(me, line):
 873     """Call with a new trace message."""
 874     me.add(line)
 875
 876 class WarningLogModel (LogModel):
 877   """
 878   Log model for warnings.
 879
 880   We split the category out into a separate column.
 881   """
 882   def __init__(me):
 883     LogModel.__init__(me, ('Category', 'Message'))
 884   def notify(me, tag, *rest):
 885     """Call with a new warning message."""
 886     me.add(tag, ' '.join([T.quotify(w) for w in rest]))
 887
 888 class LogViewer (TrivialWindow):
 889   """
 890   A log viewer window.
 891
 892   Its contents are a TreeView showing the log.
 893
 894   Attributes:
 895
 896     * model: an appropriate LogModel
 897     * list: a TreeView widget to display the log
 898   """
 899
 900   def __init__(me, model):
 901     """
 902     Create a log viewer showing the LogModel MODEL.
 903     """
 904     TrivialWindow.__init__(me)
 905     me.model = model
 906     scr = MyScrolledWindow()
 907     me.list = MyTreeView(me.model)
 908     i = 0
 909     for c in me.model.cols:
 910       crt = G.CellRendererText()
 911       me.list.append_column(G.TreeViewColumn(c, crt, text = i))
 912       i += 1
 913     crt.set_property('family', 'monospace')
 914     me.set_default_size(440, 256)
 915     scr.add(me.list)
 916     me.add(scr)
 917     me.show_all()
 918
 919 ###--------------------------------------------------------------------------
 920 ### Pinging peers.
 921
 922 class pingstate (struct):
 923   """
 924   Information kept for each peer by the Pinger.
 925
 926   Important attributes:
 927
 928     * peer = the peer name
 929     * command = PING or EPING
 930     * n = how many pings we've sent so far
 931     * ngood = how many returned
 932     * nmiss = how many didn't return
 933     * nmissrun = how many pings since the last good one
 934     * tlast = round-trip time for the last (good) ping
 935     * ttot = total roung trip time
 936   """
 937   pass
 938
 939 class Pinger (T.Coroutine, HookClient):
 940   """
 941   Coroutine which pings known peers and collects statistics.
 942
 943   Interesting attributes:
 944
 945     * _map: dict mapping peer names to Peer objects
 946     * _q: event queue for notifying pinger coroutine
 947     * _timer: gobject timer for waking the coroutine
 948   """
 949
 950   def __init__(me):
 951     """
 952     Initialize the pinger.
 953
 954     We watch the monitor's PeerList to track which peers we should ping.  We
 955     maintain an event queue and put all the events on that.
 956
 957     The statistics for a PEER are held in the Peer object, in PEER.ping[CMD],
 958     where CMD is 'PING' or 'EPING'.
 959     """
 960     T.Coroutine.__init__(me)
 961     HookClient.__init__(me)
 962     me._map = {}
 963     me._q = T.Queue()
 964     me._timer = None
 965     me.hook(conn.connecthook, me._connected)
 966     me.hook(conn.disconnecthook, me._disconnected)
 967     me.hook(monitor.peers.addhook,
 968             lambda p: T.defer(me._q.put, (p, 'ADD', None)))
 969     me.hook(monitor.peers.delhook,
 970             lambda p: T.defer(me._q.put, (p, 'KILL', None)))
 971     if conn.connectedp(): me.connected()
 972
 973   def _connected(me):
 974     """Respond to connection: start pinging thngs."""
 975     me._timer = GL.timeout_add(1000, me._timerfunc)
 976
 977   def _timerfunc(me):
 978     """Timer function: put a timer event on the queue."""
 979     me._q.put((None, 'TIMER', None))
 980     return True
 981
 982   def _disconnected(me, reason):
 983     """Respond to disconnection: stop pinging."""
 984     GL.source_remove(me._timer)
 985
 986   def run(me):
 987     """
 988     Coroutine function: read events from the queue and process them.
 989
 990     Interesting events:
 991
 992       * (PEER, 'KILL', None): remove PEER from the interesting peers list
 993       * (PEER, 'ADD', None): add PEER to the list
 994       * (PEER, 'INFO', TOKENS): result from a PING command
 995       * (None, 'TIMER', None): interval timer went off: send more pings
 996     """
 997     while True:
 998       tag, code, stuff = me._q.get()
 999       if code == 'KILL':
1000         name = tag.name
1001         if name in me._map:
1002           del me._map[name]
1003       elif not conn.connectedp():
1004         pass
1005       elif code == 'ADD':
1006         p = tag
1007         p.ping = {}
1008         for cmd in 'PING', 'EPING':
1009           ps = pingstate(command = cmd, peer = p,
1010                          n = 0, ngood = 0, nmiss = 0, nmissrun = 0,
1011                          tlast = 0, ttot = 0)
1012           p.ping[cmd] = ps
1013         me._map[p.name] = p
1014       elif code == 'INFO':
1015         ps = tag
1016         if stuff[0] == 'ping-ok':
1017           t = float(stuff[1])
1018           ps.ngood += 1
1019           ps.nmissrun = 0
1020           ps.tlast = t
1021           ps.ttot += t
1022         else:
1023           ps.nmiss += 1
1024           ps.nmissrun += 1
1025         ps.n += 1
1026         ps.peer.pinghook.run(ps.peer, ps.command, ps)
1027       elif code == 'TIMER':
1028         for name, p in me._map.iteritems():
1029           for cmd, ps in p.ping.iteritems():
1030             conn.rawcommand(T.TripeAsynchronousCommand(me._q, ps, [
1031               cmd, '-background', conn.bgtag(), '--', name]))
1032
1033 ###--------------------------------------------------------------------------
1034 ### Random dialogue boxes.
1035
1036 class AddPeerDialog (MyDialog):
1037   """
1038   Let the user create a new peer the low-level way.
1039
1040   Interesting attributes:
1041
1042     * e_name, e_addr, e_port, c_keepalive, l_tunnel: widgets in the dialog
1043   """
1044
1045   def __init__(me):
1046     """Initialize the dialogue."""
1047     MyDialog.__init__(me, 'Add peer',
1048                       buttons = [(G.STOCK_CANCEL, me.destroy),
1049                                  (G.STOCK_OK, me.ok)])
1050     me._setup()
1051
1052   @incr
1053   def _setup(me):
1054     """Coroutine function: background setup for AddPeerDialog."""
1055     table = GridPacker()
1056     me.vbox.pack_start(table, True, True, 0)
1057     me.e_name = table.labelled('Name',
1058                                ValidatingEntry(r'^[^\s:]+$', '', 16),
1059                                width = 3)
1060     me.e_addr = table.labelled('Address',
1061                                ValidatingEntry(r'^[a-zA-Z0-9.-]+$', '', 24),
1062                                newlinep = True)
1063     me.e_port = table.labelled('Port',
1064                                ValidatingEntry(numericvalidate(0, 65535),
1065                                                '4070',
1066                                                5))
1067     me.l_tunnel = table.labelled('Tunnel', combo_box_text(),
1068                                  newlinep = True, width = 3)
1069     me.tuns = ['(Default)'] + conn.tunnels()
1070     for t in me.tuns:
1071       me.l_tunnel.append_text(t)
1072     me.l_tunnel.set_active(0)
1073
1074     def tickybox_sensitivity(tickybox, target):
1075       tickybox.connect('toggled',
1076                        lambda t: target.set_sensitive (t.get_active()))
1077
1078     def optional_entry(label, rx_valid, width):
1079       c = G.CheckButton(label)
1080       table.pack(c, newlinep = True, xopt = G.FILL)
1081       e = ValidatingEntry(rx_valid, '', width)
1082       e.set_sensitive(False)
1083       tickybox_sensitivity(c, e)
1084       table.pack(e, width = 3)
1085       return c, e
1086
1087     me.c_keepalive, me.e_keepalive = \
1088       optional_entry('Keepalives', r'^\d+[hms]?$', 5)
1089
1090     me.c_cork = G.CheckButton('Cork')
1091     table.pack(me.c_cork, newlinep = True, width = 4, xopt = G.FILL)
1092
1093     me.c_mobile = G.CheckButton('Mobile')
1094     table.pack(me.c_mobile, newlinep = True, width = 4, xopt = G.FILL)
1095
1096     me.c_ephem = G.CheckButton('Ephemeral')
1097     table.pack(me.c_ephem, newlinep = True, width = 4, xopt = G.FILL)
1098
1099     me.c_peerkey, me.e_peerkey = \
1100       optional_entry('Peer key tag', r'^[^.:\s]+$', 16)
1101     me.c_privkey, me.e_privkey = \
1102       optional_entry('Private key tag', r'^[^.:\s]+$', 16)
1103
1104     me.c_knock, me.e_knock = \
1105       optional_entry('Knock string', r'^[^:\s]+$', 16)
1106
1107     me.show_all()
1108
1109   def ok(me):
1110     """Handle an OK press: create the peer."""
1111     try:
1112       t = me.l_tunnel.get_active()
1113       me._addpeer(me.e_name.get_text(),
1114                   me.e_addr.get_text(),
1115                   me.e_port.get_text(),
1116                   keepalive = (me.c_keepalive.get_active() and
1117                                me.e_keepalive.get_text() or None),
1118                   tunnel = t and me.tuns[t] or None,
1119                   cork = me.c_cork.get_active() or None,
1120                   mobile = me.c_mobile.get_active() or None,
1121                   ephemeral = me.c_ephem.get_active() or None,
1122                   key = (me.c_peerkey.get_active() and
1123                          me.e_peerkey.get_text() or None),
1124                   priv = (me.c_privkey.get_active() and
1125                           me.e_privkey.get_text() or None),
1126                   knock = (me.c_knock.get_active() and
1127                            me.e_knock.get_text() or None))
1128     except ValidationError:
1129       GDK.beep()
1130       return
1131
1132   @incr
1133   def _addpeer(me, *args, **kw):
1134     """Coroutine function: actually do the ADD command."""
1135     try:
1136       conn.add(*args, **kw)
1137       me.destroy()
1138     except T.TripeError, exc:
1139       T.defer(moanbox, ' '.join(exc))
1140
1141 class ServInfo (TrivialWindow):
1142   """
1143   Show information about the server and available services.
1144
1145   Interesting attributes:
1146
1147     * e: maps SERVINFO keys to entry widgets
1148     * svcs: Gtk ListStore describing services (columns are name and version)
1149   """
1150
1151   def __init__(me):
1152     TrivialWindow.__init__(me)
1153     me.set_title('TrIPE server info')
1154     table = GridPacker()
1155     me.add(table)
1156     me.e = {}
1157     def add(label, tag, text = None, **kw):
1158       me.e[tag] = table.info(label, text, **kw)
1159     add('Implementation', 'implementation')
1160     add('Version', 'version', newlinep = True)
1161     me.svcs = G.ListStore(*(GO.TYPE_STRING,) * 2)
1162     me.svcs.set_sort_column_id(0, G.SORT_ASCENDING)
1163     scr = MyScrolledWindow()
1164     lb = MyTreeView(me.svcs)
1165     i = 0
1166     for title in 'Service', 'Version':
1167       lb.append_column(G.TreeViewColumn(
1168         title, G.CellRendererText(), text = i))
1169       i += 1
1170     for svc in monitor.services:
1171       me.svcs.append([svc.name, svc.version])
1172     scr.add(lb)
1173     table.pack(scr, width = 2, newlinep = True,
1174                yopt = G.EXPAND | G.FILL | G.SHRINK)
1175     me.update()
1176     me.hook(conn.connecthook, me.update)
1177     me.hook(monitor.services.addhook, me.addsvc)
1178     me.hook(monitor.services.delhook, me.delsvc)
1179     me.show_all()
1180
1181   def addsvc(me, svc):
1182     me.svcs.append([svc.name, svc.version])
1183
1184   def delsvc(me, svc):
1185     for i in xrange(len(me.svcs)):
1186       if me.svcs[i][0] == svc.name:
1187         me.svcs.remove(me.svcs.get_iter(i))
1188         break
1189   @incr
1190   def update(me):
1191     info = conn.servinfo()
1192     for i in me.e:
1193       me.e[i].set_text(info[i])
1194
1195 class TraceOptions (MyDialog):
1196   """Tracing options window."""
1197   def __init__(me):
1198     MyDialog.__init__(me, title = 'Tracing options',
1199                       buttons = [(G.STOCK_CLOSE, me.destroy),
1200                                  (G.STOCK_OK, cr(me.ok))])
1201     me._setup()
1202
1203   @incr
1204   def _setup(me):
1205     me.opts = []
1206     for ch, st, desc in conn.trace():
1207       if ch.isupper(): continue
1208       text = desc[0].upper() + desc[1:]
1209       ticky = G.CheckButton(text)
1210       ticky.set_active(st == '+')
1211       me.vbox.pack_start(ticky, True, True, 0)
1212       me.opts.append((ch, ticky))
1213     me.show_all()
1214   def ok(me):
1215     on = []
1216     off = []
1217     for ch, ticky in me.opts:
1218       if ticky.get_active():
1219         on.append(ch)
1220       else:
1221         off.append(ch)
1222     setting = ''.join(on) + '-' + ''.join(off)
1223     conn.trace(setting)
1224     me.destroy()
1225
1226 ###--------------------------------------------------------------------------
1227 ### Peer window.
1228
1229 def xlate_time(t):
1230   """Translate a TrIPE-format time to something human-readable."""
1231   if t == 'NEVER': return '(never)'
1232   YY, MM, DD, hh, mm, ss = map(int, rx_time.match(t).group(1, 2, 3, 4, 5, 6))
1233   ago = TIME.time() - TIME.mktime((YY, MM, DD, hh, mm, ss, 0, 0, -1))
1234   ago = MATH.floor(ago); unit = 's'
1235   for n, u in [(60, 'min'), (60, 'hrs'), (24, 'days')]:
1236     if ago < 2*n: break
1237     ago /= n
1238     unit = u
1239   return '%04d:%02d:%02d %02d:%02d:%02d (%.1f %s ago)' % \
1240          (YY, MM, DD, hh, mm, ss, ago, unit)
1241 def xlate_bytes(b):
1242   """Translate a raw byte count into something a human might want to read."""
1243   suff = 'B'
1244   b = int(b)
1245   for s in 'KMG':
1246     if b < 4096: break
1247     b /= 1024
1248     suff = s
1249   return '%d %s' % (b, suff)
1250
1251 ## How to translate peer stats.  Maps the stat name to a translation
1252 ## function.
1253 statsxlate = \
1254   [('start-time', xlate_time),
1255    ('last-packet-time', xlate_time),
1256    ('last-keyexch-time', xlate_time),
1257    ('bytes-in', xlate_bytes),
1258    ('bytes-out', xlate_bytes),
1259    ('keyexch-bytes-in', xlate_bytes),
1260    ('keyexch-bytes-out', xlate_bytes),
1261    ('ip-bytes-in', xlate_bytes),
1262    ('ip-bytes-out', xlate_bytes)]
1263
1264 def format_stat(format, dict):
1265   if callable(format): return format(dict)
1266   else: return format % dict
1267
1268 ## How to lay out the stats dialog.  Format is (LABEL, FORMAT): LABEL is
1269 ## the label to give the entry box; FORMAT is the format string to write into
1270 ## the entry.
1271 cryptolayout = \
1272   [('Diffie-Hellman group',
1273     '%(kx-group)s '
1274     '(%(kx-group-order-bits)s-bit order, '
1275     '%(kx-group-elt-bits)s-bit elements)'),
1276    ('Bulk crypto transform',
1277     '%(bulk-transform)s (%(bulk-overhead)s byte overhead)'),
1278    ('Data encryption', lambda d: '%s (%s; %s)' % (
1279      d['cipher'],
1280      '%d-bit key' % (8*int(d['cipher-keysz'])),
1281      d.get('cipher-blksz', '0') == '0'
1282        and 'stream cipher'
1283        or '%d-bit block' % (8*int(d['cipher-blksz'])))),
1284    ('Message authentication', lambda d: '%s (%s; %s)' % (
1285      d['mac'],
1286      d.get('mac-keysz') is None
1287        and 'one-time MAC'
1288        or '%d-bit key' % (8*int(d['mac-keysz'])),
1289      '%d-bit tag' % (8*int(d['mac-tagsz'])))),
1290    ('Hash', lambda d: '%s (%d-bit output)' %
1291     (d['hash'], 8*int(d['hash-sz'])))]
1292
1293 statslayout = \
1294   [('Start time', '%(start-time)s'),
1295    ('Private key', '%(current-key)s')] + \
1296   cryptolayout + \
1297   [('Last key-exchange', '%(last-keyexch-time)s'),
1298    ('Last packet', '%(last-packet-time)s'),
1299    ('Packets in/out',
1300     '%(packets-in)s (%(bytes-in)s) / %(packets-out)s (%(bytes-out)s)'),
1301    ('Key-exchange in/out',
1302     '%(keyexch-packets-in)s (%(keyexch-bytes-in)s) / %(keyexch-packets-out)s (%(keyexch-bytes-out)s)'),
1303    ('IP in/out',
1304     '%(ip-packets-in)s (%(ip-bytes-in)s) / %(ip-packets-out)s (%(ip-bytes-out)s)'),
1305    ('Rejected packets', '%(rejected-packets)s')]
1306
1307 class PeerWindow (TrivialWindow):
1308   """
1309   Show information about a peer.
1310
1311   This gives a graphical view of the server's peer statistics.
1312
1313   Interesting attributes:
1314
1315     * e: dict mapping keys (mostly matching label widget texts, though pings
1316       use command names) to entry widgets so that we can update them easily
1317     * peer: the peer this window shows information about
1318     * cr: the info-fetching coroutine, or None if crrrently disconnected
1319     * doupate: whether the info-fetching corouting should continue running
1320   """
1321
1322   def __init__(me, peer):
1323     """Construct a PeerWindow, showing information about PEER."""
1324
1325     TrivialWindow.__init__(me)
1326     me.set_title('TrIPE statistics: %s' % peer.name)
1327     me.peer = peer
1328
1329     table = GridPacker()
1330     me.add(table)
1331
1332     ## Utility for adding fields.
1333     me.e = {}
1334     def add(label, text = None, key = None):
1335       if key is None: key = label
1336       me.e[key] = table.info(label, text, len = 42, newlinep = True)
1337
1338     ## Build the dialogue box.
1339     add('Peer name', peer.name)
1340     add('Tunnel', peer.tunnel)
1341     add('Interface', peer.ifname)
1342     add('Keepalives',
1343         (peer.keepalive == '0' and 'never') or '%s s' % peer.keepalive)
1344     add('Address', peer.addr)
1345     add('Transport pings', key = 'PING')
1346     add('Encrypted pings', key = 'EPING')
1347
1348     for label, format in statslayout:
1349       add(label)
1350
1351     ## Hook onto various interesting events.
1352     me.hook(conn.connecthook, me.tryupdate)
1353     me.hook(conn.disconnecthook, me.stopupdate)
1354     me.hook(me.closehook, me.stopupdate)
1355     me.hook(me.peer.deadhook, me.dead)
1356     me.hook(me.peer.changehook, me.change)
1357     me.hook(me.peer.pinghook, me.ping)
1358     me.cr = None
1359     me.doupdate = True
1360     me.tryupdate()
1361
1362     ## Format the ping statistics.
1363     for cmd, ps in me.peer.ping.iteritems():
1364       me.ping(me.peer, cmd, ps)
1365
1366     ## And show the window.
1367     me.show_all()
1368
1369   def change(me):
1370     """Update the display in response to a notification."""
1371     me.e['Interface'].set_text(me.peer.ifname)
1372     me.e['Address'].set_text(me.peer.addr)
1373
1374   def _update(me):
1375     """
1376     Main display-updating coroutine.
1377
1378     This does an update, sleeps for a while, and starts again.  If the
1379     me.doupdate flag goes low, we stop the loop.
1380     """
1381     while me.peer.alivep and conn.connectedp() and me.doupdate:
1382       stat = conn.stats(me.peer.name)
1383       for s, trans in statsxlate:
1384         stat[s] = trans(stat[s])
1385       stat.update(me.peer.__dict__)
1386       for label, format in statslayout:
1387         me.e[label].set_text(format_stat(format, stat))
1388       GL.timeout_add(1000, lambda: me.cr.switch() and False)
1389       me.cr.parent.switch()
1390     me.cr = None
1391
1392   def tryupdate(me):
1393     """Start the updater coroutine, if it's not going already."""
1394     if me.cr is None:
1395       me.cr = T.Coroutine(me._update,
1396                           name = 'update-peer-window %s' % me.peer.name)
1397       me.cr.switch()
1398
1399   def stopupdate(me, *hunoz, **hukairz):
1400     """Stop the update coroutine, by setting me.doupdate."""
1401     me.doupdate = False
1402
1403   def dead(me):
1404     """Called when the peer is killed."""
1405     me.set_title('TrIPE statistics: %s [defunct]' % me.peer.name)
1406     me.e['Peer name'].set_text('%s [defunct]' % me.peer.name)
1407     me.stopupdate()
1408
1409   def ping(me, peer, cmd, ps):
1410     """Called when a ping result for the peer is reported."""
1411     s = '%d/%d' % (ps.ngood, ps.n)
1412     if ps.n:
1413       s += ' (%.1f%%)' % (ps.ngood * 100.0/ps.n)
1414     if ps.ngood:
1415       s += '; %.2f ms (last %.1f ms)' % (ps.ttot/ps.ngood, ps.tlast);
1416     me.e[ps.command].set_text(s)
1417
1418 ###--------------------------------------------------------------------------
1419 ### Cryptographic status.
1420
1421 class CryptoInfo (TrivialWindow):
1422   """Simple display of cryptographic algorithms in use."""
1423   def __init__(me):
1424     TrivialWindow.__init__(me)
1425     me.set_title('Cryptographic algorithms')
1426     T.aside(me.populate)
1427   def populate(me):
1428     table = GridPacker()
1429     me.add(table)
1430
1431     crypto = conn.algs()
1432     firstp = True
1433     for label, format in cryptolayout:
1434       table.info(label, format_stat(format, crypto),
1435                  len = 42, newlinep = not firstp)
1436       firstp = False
1437
1438     me.show_all()
1439
1440 ###--------------------------------------------------------------------------
1441 ### Main monitor window.
1442
1443 class MonitorWindow (MyWindow):
1444
1445   """
1446   The main monitor window.
1447
1448   This class creates, populates and maintains the main monitor window.
1449
1450   Lots of attributes:
1451
1452     * warnings, trace: log models for server output
1453     * warnview, traceview, traceopts, addpeerwin, cryptoinfo, servinfo:
1454       WindowSlot objects for ancillary windows
1455     * ui: Gtk UIManager object for the menu system
1456     * apmenu: pair of identical autoconnecting peer menus
1457     * listmodel: Gtk ListStore for connected peers; contains peer name,
1458       address, and ping times (transport and encrypted, value and colour)
1459     * status: Gtk Statusbar at the bottom of the window
1460     * _kidding: an unpleasant backchannel between the apchange method (which
1461       builds the apmenus) and the menu handler, forced on us by a Gtk
1462       misfeature
1463
1464   Also installs attributes on Peer objects:
1465
1466     * i: index of peer's entry in listmodel
1467     * win: WindowSlot object for the peer's PeerWindow
1468   """
1469
1470   def __init__(me):
1471     """Construct the window."""
1472
1473     ## Basic stuff.
1474     MyWindow.__init__(me)
1475     me.set_title('TrIPE monitor')
1476
1477     ## Hook onto diagnostic outputs.
1478     me.warnings = WarningLogModel()
1479     me.hook(conn.warnhook, me.warnings.notify)
1480     me.trace = TraceLogModel()
1481     me.hook(conn.tracehook, me.trace.notify)
1482
1483     ## Make slots to store the various ancillary singleton windows.
1484     me.warnview = WindowSlot(lambda: LogViewer(me.warnings))
1485     me.traceview = WindowSlot(lambda: LogViewer(me.trace))
1486     me.traceopts = WindowSlot(lambda: TraceOptions())
1487     me.addpeerwin = WindowSlot(lambda: AddPeerDialog())
1488     me.cryptoinfo = WindowSlot(lambda: CryptoInfo())
1489     me.servinfo = WindowSlot(lambda: ServInfo())
1490
1491     ## Main window structure.
1492     vbox = G.VBox()
1493     me.add(vbox)
1494
1495     ## UI manager  makes our menus.  (We're too cheap to have a toolbar.)
1496     me.ui = G.UIManager()
1497     actgroup = makeactiongroup('monitor',
1498       [('file-menu', '_File', None, None),
1499        ('connect', '_Connect', '<Control>C', conn.connect),
1500        ('disconnect', '_Disconnect', '<Control>D',
1501         lambda: conn.disconnect(None)),
1502        ('quit', '_Quit', '<Control>Q', me.close),
1503        ('server-menu', '_Server', None, None),
1504        ('daemon', 'Run in _background', None, cr(conn.daemon)),
1505        ('server-version', 'Server version', '<Control>V', me.servinfo.open),
1506        ('crypto-algs', 'Cryptographic algorithms',
1507         '<Control>Y', me.cryptoinfo.open),
1508        ('reload-keys', 'Reload keys', '<Control>R', cr(conn.reload)),
1509        ('server-quit', 'Terminate server', None, cr(conn.quit)),
1510        ('conn-peer', 'Connect peer', None, None),
1511        ('logs-menu', '_Logs', None, None),
1512        ('show-warnings', 'Show _warnings', '<Control>W', me.warnview.open),
1513        ('show-trace', 'Show _trace', '<Control>T', me.traceview.open),
1514        ('trace-options', 'Trace _options...', None, me.traceopts.open),
1515        ('help-menu', '_Help', None, None),
1516        ('about', '_About tripemon...', None, aboutbox.open),
1517        ('add-peer', '_Add peer...', '<Control>A', me.addpeerwin.open),
1518        ('kill-peer', '_Kill peer', None, me.killpeer),
1519        ('force-kx', 'Force key e_xchange', None, me.forcekx)])
1520
1521     ## Menu structures.
1522     uidef = '''
1523       <ui>
1524         <menubar>
1525           <menu action="file-menu">
1526             <menuitem action="quit"/>
1527           </menu>
1528           <menu action="server-menu">
1529             <menuitem action="connect"/>
1530             <menuitem action="disconnect"/>
1531             <separator/>
1532             <menuitem action="server-version"/>
1533             <menuitem action="crypto-algs"/>
1534             <menuitem action="add-peer"/>
1535             <menuitem action="conn-peer"/>
1536             <menuitem action="daemon"/>
1537             <menuitem action="reload-keys"/>
1538             <separator/>
1539             <menuitem action="server-quit"/>
1540           </menu>
1541           <menu action="logs-menu">
1542             <menuitem action="show-warnings"/>
1543             <menuitem action="show-trace"/>
1544             <menuitem action="trace-options"/>
1545           </menu>
1546           <menu action="help-menu">
1547             <menuitem action="about"/>
1548           </menu>
1549         </menubar>
1550         <popup name="peer-popup">
1551           <menuitem action="add-peer"/>
1552           <menuitem action="conn-peer"/>
1553           <menuitem action="kill-peer"/>
1554           <menuitem action="force-kx"/>
1555         </popup>
1556       </ui>
1557       '''
1558
1559     ## Populate the UI manager.
1560     me.ui.insert_action_group(actgroup, 0)
1561     me.ui.add_ui_from_string(uidef)
1562
1563     ## Construct the menu bar.
1564     vbox.pack_start(me.ui.get_widget('/menubar'), False, True, 0)
1565     me.add_accel_group(me.ui.get_accel_group())
1566
1567     ## Construct and attach the auto-peers menu.  (This is a horrible bodge
1568     ## because we can't attach the same submenu in two different places.)
1569     me.apmenu = G.Menu(), G.Menu()
1570     me.ui.get_widget('/menubar/server-menu/conn-peer') \
1571       .set_submenu(me.apmenu[0])
1572     me.ui.get_widget('/peer-popup/conn-peer').set_submenu(me.apmenu[1])
1573
1574     ## Construct the main list model, and listen on hooks which report
1575     ## changes to the available peers.
1576     me.listmodel = G.ListStore(*(GO.TYPE_STRING,) * 6)
1577     me.listmodel.set_sort_column_id(0, G.SORT_ASCENDING)
1578     me.hook(monitor.peers.addhook, me.addpeer)
1579     me.hook(monitor.peers.delhook, me.delpeer)
1580     me.hook(monitor.autopeershook, me.apchange)
1581
1582     ## Construct the list viewer and put it in a scrolling window.
1583     scr = MyScrolledWindow()
1584     me.list = MyTreeView(me.listmodel)
1585     me.list.append_column(G.TreeViewColumn('Peer name',
1586                                            G.CellRendererText(),
1587                                            text = 0))
1588     me.list.append_column(G.TreeViewColumn('Address',
1589                                            G.CellRendererText(),
1590                                            text = 1))
1591     me.list.append_column(G.TreeViewColumn('T-ping',
1592                                            G.CellRendererText(),
1593                                            text = 2,
1594                                            foreground = 3))
1595     me.list.append_column(G.TreeViewColumn('E-ping',
1596                                            G.CellRendererText(),
1597                                            text = 4,
1598                                            foreground = 5))
1599     me.list.get_column(1).set_expand(True)
1600     me.list.connect('row-activated', me.activate)
1601     me.list.connect('button-press-event', me.buttonpress)
1602     me.list.set_reorderable(True)
1603     me.list.get_selection().set_mode(G.SELECTION_NONE)
1604     scr.add(me.list)
1605     vbox.pack_start(scr, True, True, 0)
1606
1607     ## Construct the status bar, and listen on hooks which report changes to
1608     ## connection status.
1609     me.status = G.Statusbar()
1610     vbox.pack_start(me.status, False, True, 0)
1611     me.hook(conn.connecthook, cr(me.connected))
1612     me.hook(conn.disconnecthook, me.disconnected)
1613     me.hook(conn.notehook, me.notify)
1614
1615     ## Set a plausible default window size.
1616     me.set_default_size(512, 180)
1617
1618   def addpeer(me, peer):
1619     """Hook: announces that PEER has been added."""
1620     peer.i = me.listmodel.append([peer.name, peer.addr,
1621                                   '???', 'green', '???', 'green'])
1622     peer.win = WindowSlot(lambda: PeerWindow(peer))
1623     me.hook(peer.pinghook, me._ping)
1624     me.hook(peer.changehook, lambda: me._change(peer))
1625     me.apchange()
1626
1627   def delpeer(me, peer):
1628     """Hook: announces that PEER has been removed."""
1629     me.listmodel.remove(peer.i)
1630     me.unhook(peer.pinghook)
1631     me.apchange()
1632
1633   def path_peer(me, path):
1634     """Return the peer corresponding to a given list-model PATH."""
1635     return monitor.peers[me.listmodel[path][0]]
1636
1637   def apchange(me):
1638     """
1639     Hook: announces that a change has been made to the peers available for
1640     automated connection.
1641
1642     This populates both auto-peer menus and keeps them in sync.  (As
1643     mentioned above, we can't attach the same submenu to two separate parent
1644     menu items.  So we end up with two identical menus instead.  Yes, this
1645     does suck.)
1646     """
1647
1648     ## The set_active method of a CheckMenuItem works by maybe activating the
1649     ## menu item.  This signals our handler.  But we don't actually want to
1650     ## signal the handler unless the user actually frobbed the item.  So the
1651     ## _kidding flag is used as an underhanded way of telling the handler
1652     ## that we don't actually want it to do anything.  Of course, this sucks
1653     ## mightily.
1654     me._kidding = True
1655
1656     ## Iterate over the two menus.
1657     for m in 0, 1:
1658       menu = me.apmenu[m]
1659       existing = menu.get_children()
1660       if monitor.autopeers is None:
1661
1662         ## No peers, so empty out the menu.
1663         for item in existing:
1664           menu.remove(item)
1665
1666       else:
1667
1668         ## Insert the new items into the menu.  (XXX this seems buggy XXX)
1669         ## Tick the peers which are actually connected.
1670         i = j = 0
1671         for peer in monitor.autopeers:
1672           if j < len(existing) and \
1673              existing[j].get_child().get_text() == peer:
1674             item = existing[j]
1675             j += 1
1676           else:
1677             item = G.CheckMenuItem(peer, use_underline = False)
1678             item.connect('activate', invoker(me._addautopeer, peer))
1679             menu.insert(item, i)
1680           item.set_active(peer in monitor.peers.table)
1681           i += 1
1682
1683       ## Make all the menu items visible.
1684       menu.show_all()
1685
1686     ## Set the parent menu items sensitive if and only if there are any peers
1687     ## to connect.
1688     for name in ['/menubar/server-menu/conn-peer', '/peer-popup/conn-peer']:
1689       me.ui.get_widget(name).set_sensitive(bool(monitor.autopeers))
1690
1691     ## And now allow the handler to do its business normally.
1692     me._kidding = False
1693
1694   def _addautopeer(me, peer):
1695     """
1696     Automatically connect an auto-peer.
1697
1698     This method is invoked from the main coroutine.  Since the actual
1699     connection needs to issue administration commands, we must spawn a new
1700     child coroutine for it.
1701     """
1702     if me._kidding:
1703       return
1704     T.Coroutine(me._addautopeer_hack,
1705                 name = '_addautopeerhack %s' % peer).switch(peer)
1706
1707   def _addautopeer_hack(me, peer):
1708     """Make an automated connection to PEER in response to a user click."""
1709     if me._kidding:
1710       return
1711     try:
1712       T._simple(conn.svcsubmit('connect', 'active', peer))
1713     except T.TripeError, exc:
1714       T.defer(moanbox, ' '.join(exc.args))
1715     me.apchange()
1716
1717   def activate(me, l, path, col):
1718     """
1719     Handle a double-click on a peer in the main list: open a PeerInfo window.
1720     """
1721     peer = me.path_peer(path)
1722     peer.win.open()
1723
1724   def buttonpress(me, l, ev):
1725     """
1726     Handle a mouse click on the main list.
1727
1728     Currently we're only interested in button-3, which pops up the peer menu.
1729     For future reference, we stash the peer that was clicked in me.menupeer.
1730     """
1731     if ev.button == 3:
1732       x, y = int(ev.x), int(ev.y)
1733       r = me.list.get_path_at_pos(x, y)
1734       for i in '/peer-popup/kill-peer', '/peer-popup/force-kx':
1735         me.ui.get_widget(i).set_sensitive(conn.connectedp() and
1736                                           r is not None)
1737       me.ui.get_widget('/peer-popup/conn-peer'). \
1738         set_sensitive(bool(monitor.autopeers))
1739       if r:
1740         me.menupeer = me.path_peer(r[0])
1741       else:
1742         me.menupeer = None
1743       me.ui.get_widget('/peer-popup').popup(
1744         None, None, None, ev.button, ev.time)
1745
1746   def killpeer(me):
1747     """Kill a peer from the popup menu."""
1748     cr(conn.kill, me.menupeer.name)()
1749
1750   def forcekx(me):
1751     """Kickstart a key-exchange from the popup menu."""
1752     cr(conn.forcekx, me.menupeer.name)()
1753
1754   _columnmap = {'PING': (2, 3), 'EPING': (4, 5)}
1755   def _ping(me, p, cmd, ps):
1756     """Hook: responds to ping reports."""
1757     textcol, colourcol = me._columnmap[cmd]
1758     if ps.nmissrun:
1759       me.listmodel[p.i][textcol] = '(miss %d)' % ps.nmissrun
1760       me.listmodel[p.i][colourcol] = 'red'
1761     else:
1762       me.listmodel[p.i][textcol] = '%.1f ms' % ps.tlast
1763       me.listmodel[p.i][colourcol] = 'black'
1764
1765   def _change(me, p):
1766     """Hook: notified when the peer changes state."""
1767     me.listmodel[p.i][1] = p.addr
1768
1769   def setstatus(me, status):
1770     """Update the message in the status bar."""
1771     me.status.pop(0)
1772     me.status.push(0, status)
1773
1774   def notify(me, note, *rest):
1775     """Hook: invoked when interesting notifications occur."""
1776     if note == 'DAEMON':
1777       me.ui.get_widget('/menubar/server-menu/daemon').set_sensitive(False)
1778
1779   def connected(me):
1780     """
1781     Hook: invoked when a connection is made to the server.
1782
1783     Make options which require a server connection sensitive.
1784     """
1785     me.setstatus('Connected (port %s)' % conn.port())
1786     me.ui.get_widget('/menubar/server-menu/connect').set_sensitive(False)
1787     for i in ('/menubar/server-menu/disconnect',
1788               '/menubar/server-menu/server-version',
1789               '/menubar/server-menu/add-peer',
1790               '/menubar/server-menu/server-quit',
1791               '/menubar/logs-menu/trace-options'):
1792       me.ui.get_widget(i).set_sensitive(True)
1793     me.ui.get_widget('/menubar/server-menu/conn-peer'). \
1794       set_sensitive(bool(monitor.autopeers))
1795     me.ui.get_widget('/menubar/server-menu/daemon'). \
1796       set_sensitive(conn.servinfo()['daemon'] == 'nil')
1797
1798   def disconnected(me, reason):
1799     """
1800     Hook: invoked when the connection to the server is lost.
1801
1802     Make most options insensitive.
1803     """
1804     me.setstatus('Disconnected')
1805     me.ui.get_widget('/menubar/server-menu/connect').set_sensitive(True)
1806     for i in ('/menubar/server-menu/disconnect',
1807               '/menubar/server-menu/server-version',
1808               '/menubar/server-menu/add-peer',
1809               '/menubar/server-menu/conn-peer',
1810               '/menubar/server-menu/daemon',
1811               '/menubar/server-menu/server-quit',
1812               '/menubar/logs-menu/trace-options'):
1813       me.ui.get_widget(i).set_sensitive(False)
1814     if reason: moanbox(reason)
1815
1816 ###--------------------------------------------------------------------------
1817 ### Main program.
1818
1819 def parse_options():
1820   """
1821   Parse command-line options.
1822
1823   Process the boring ones.  Return all of them, for later.
1824   """
1825   op = OptionParser(usage = '%prog [-a FILE] [-d DIR]',
1826                     version = '%prog (tripe version 1.0.0)')
1827   op.add_option('-a', '--admin-socket',
1828                 metavar = 'FILE', dest = 'tripesock', default = T.tripesock,
1829                 help = 'Select socket to connect to [default %default]')
1830   op.add_option('-d', '--directory',
1831                 metavar = 'DIR', dest = 'dir', default = T.configdir,
1832                 help = 'Select current diretory [default %default]')
1833   opts, args = op.parse_args()
1834   if args: op.error('no arguments permitted')
1835   OS.chdir(opts.dir)
1836   return opts
1837
1838 def init(opts):
1839   """Initialization."""
1840
1841   global conn, monitor, pinger
1842
1843   ## Try to establish a connection.
1844   conn = Connection(opts.tripesock)
1845
1846   ## Make the main interesting coroutines and objects.
1847   monitor = Monitor()
1848   pinger = Pinger()
1849   pinger.switch()
1850
1851 def main():
1852
1853   ## Main window.
1854   root = MonitorWindow()
1855   conn.connect()
1856   root.show_all()
1857
1858   ## Main loop.
1859   HookClient().hook(root.closehook, exit)
1860   conn.mainloop()
1861
1862 if __name__ == '__main__':
1863   opts = parse_options()
1864   init(opts)
1865   main()
1866
1867 ###----- That's all, folks --------------------------------------------------