This file is indexed.

/usr/share/kde4/apps/system-config-printer-kde/authconn.py is in system-config-printer-kde 4:4.8.2-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
#!/usr/bin/env python

## Copyright (C) 2007, 2008, 2009, 2010 Red Hat, Inc.
## Author: Tim Waugh <twaugh@redhat.com>

## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.

## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.

## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# FIXME non UI bits work, dialogues needs porting from GTK to KDE

import threading
import cups
#import cupspk not implemented, disabled in _connect()
import gobject
#import gtk
import os
#from errordialogs import *
from debug import *
from gettext import gettext as _
N_ = lambda x: x

"""
class AuthDialog(gtk.Dialog):
    AUTH_FIELD={'username': N_("Username:"),
                'password': N_("Password:"),
                'domain': N_("Domain:")}

    def __init__ (self, title=None, parent=None,
                  flags=gtk.DIALOG_MODAL | gtk.DIALOG_NO_SEPARATOR,
                  buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                           gtk.STOCK_OK, gtk.RESPONSE_OK),
                  auth_info_required=['username', 'password'],
                  allow_remember=False):
        if title == None:
            title = _("Authentication")
        gtk.Dialog.__init__ (self, title, parent, flags, buttons)
        self.auth_info_required = auth_info_required
        self.set_default_response (gtk.RESPONSE_OK)
        self.set_border_width (6)
        self.set_resizable (False)
        hbox = gtk.HBox (False, 12)
        hbox.set_border_width (6)
        image = gtk.Image ()
        image.set_from_stock (gtk.STOCK_DIALOG_AUTHENTICATION,
                              gtk.ICON_SIZE_DIALOG)
        image.set_alignment (0.0, 0.0)
        hbox.pack_start (image, False, False, 0)
        vbox = gtk.VBox (False, 12)
        self.prompt_label = gtk.Label ()
        vbox.pack_start (self.prompt_label, False, False, 0)

        num_fields = len (auth_info_required)
        table = gtk.Table (num_fields, 2)
        table.set_row_spacings (6)
        table.set_col_spacings (6)

        self.field_entry = []
        for i in range (num_fields):
            field = auth_info_required[i]
            label = gtk.Label (_(self.AUTH_FIELD.get (field, field)))
            label.set_alignment (0, 0.5)
            table.attach (label, 0, 1, i, i + 1)
            entry = gtk.Entry ()
            entry.set_visibility (field != 'password')
            table.attach (entry, 1, 2, i, i + 1, 0, 0)
            self.field_entry.append (entry)

        self.field_entry[num_fields - 1].set_activates_default (True)
        vbox.pack_start (table, False, False, 0)
        hbox.pack_start (vbox, False, False, 0)
        self.vbox.pack_start (hbox)

        if allow_remember:
            cb = gtk.CheckButton (_("Remember password"))
            cb.set_active (False)
            vbox.pack_start (cb)
            self.remember_checkbox = cb

        self.vbox.show_all ()

    def set_prompt (self, prompt):
        self.prompt_label.set_markup ('<span weight="bold" size="larger">' +
                                      prompt + '</span>')
        self.prompt_label.set_use_markup (True)
        self.prompt_label.set_alignment (0, 0)
        self.prompt_label.set_line_wrap (True)

    def set_auth_info (self, auth_info):
        for i in range (len (self.field_entry)):
            self.field_entry[i].set_text (auth_info[i])

    def get_auth_info (self):
        return map (lambda x: x.get_text (), self.field_entry)

    def get_remember_password (self):
        try:
            return self.remember_checkbox.get_active ()
        except AttributeError:
            return False

    def field_grab_focus (self, field):
        i = self.auth_info_required.index (field)
        self.field_entry[i].grab_focus ()
"""
###
### An auth-info cache.
###
class _AuthInfoCache:
    def __init__ (self):
        self.creds = dict() # by (host,port)

    def cache_auth_info (self, data, host=None, port=None):
        if port == None:
            port = 631

        self.creds[(host,port)] = data

    def lookup_auth_info (self, host=None, port=None):
        if port == None:
            port = 631

        try:
            return self.creds[(host,port)]
        except KeyError:
            return None

global_authinfocache = _AuthInfoCache ()

class Connection:
    def __init__ (self, parent=None, try_as_root=True, lock=False,
                  host=None, port=None, encryption=None):
        if host != None:
            cups.setServer (host)
        if port != None:
            cups.setPort (port)
        if encryption != None:
            cups.setEncryption (encryption)

        self._use_password = ''
        self._parent = parent
        self._try_as_root = try_as_root
        self._use_user = cups.getUser ()
        self._server = cups.getServer ()
        self._port = cups.getPort()
        self._encryption = cups.getEncryption ()
        self._prompt_allowed = True
        self._operation_stack = []
        self._lock = lock
        self._gui_event = threading.Event ()

        creds = global_authinfocache.lookup_auth_info (host=host, port=port)
        if creds != None:
            if (creds[0] != 'root' or try_as_root):
                (self._use_user, self._use_password) = creds
            del creds

        self._connect ()

    def _begin_operation (self, operation):
        debugprint ("%s: Operation += %s" % (self, repr (operation)))
        self._operation_stack.append (operation)

    def _end_operation (self):
        debugprint ("%s: Operation ended" % self)
        self._operation_stack.pop ()

    def _get_prompt_allowed (self, ):
        return self._prompt_allowed

    def _set_prompt_allowed (self, allowed):
        self._prompt_allowed = allowed

    def _set_lock (self, whether):
        self._lock = whether

    def _connect (self, allow_pk=False):
        cups.setUser (self._use_user)

        self._use_pk = (allow_pk and
                        (self._server[0] == '/' or self._server == 'localhost')
                        and os.getuid () != 0)
        if self._use_pk:
            create_object = cupspk.Connection
        else:
            create_object = cups.Connection

        self._connection = create_object (host=self._server,
                                            port=self._port,
                                            encryption=self._encryption)

        if self._use_pk:
            self._connection.set_parent(self._parent)

        self._user = self._use_user
        debugprint ("Connected as user %s" % self._user)
        methodtype_lambda = type (self._connection.getPrinters)
        methodtype_real = type (self._connection.addPrinter)
        for fname in dir (self._connection):
            if fname[0] == '_':
                continue
            fn = getattr (self._connection, fname)
            if not type (fn) in [methodtype_lambda, methodtype_real]:
                continue
            setattr (self, fname, self._make_binding (fname, fn))

    def _make_binding (self, fname, fn):
        return lambda *args, **kwds: self._authloop (fname, fn, *args, **kwds)

    def _authloop (self, fname, fn, *args, **kwds):
        self._passes = 0
        c = self._connection
        retry = False
        while True:
            try:
                if self._perform_authentication () == 0:
                    break

                if c != self._connection:
                    # We have reconnected.
                    fn = getattr (self._connection, fname)
                    c = self._connection

                cups.setUser (self._use_user)

                result = fn.__call__ (*args, **kwds)

                if fname == 'adminGetServerSettings':
                    # Special case for a rubbish bit of API.
                    if result == {}:
                        # Authentication failed, but we aren't told that.
                        raise cups.IPPError (cups.IPP_NOT_AUTHORIZED, '')
                break
            except cups.IPPError, (e, m):
                if self._use_pk and m == 'pkcancel':
                    raise cups.IPPError (0, _("Operation canceled"))
                if not self._cancel and (e == cups.IPP_NOT_AUTHORIZED or
                                         e == cups.IPP_FORBIDDEN):
                    self._failed (e == cups.IPP_FORBIDDEN)
                elif not self._cancel and e == cups.IPP_SERVICE_UNAVAILABLE:
                    if self._lock:
                        self._gui_event.clear ()
                        gobject.timeout_add (1, self._ask_retry_server_error, m)
                        self._gui_event.wait ()
                    else:
                        self._ask_retry_server_error (m)

                    if self._retry_response == gtk.RESPONSE_OK:
                        debugprint ("retrying operation...")
                        retry = True
                        self._passes -= 1
                        self._has_failed = True
                    else:
                        self._cancel = True
                        raise
                else:
                    if self._cancel and not self._cannot_auth:
                        raise cups.IPPError (0, _("Operation canceled"))

                    raise
            except cups.HTTPError, (s,):
                if not self._cancel:
                    self._failed (s == cups.HTTP_FORBIDDEN)
                else:
                    raise

        return result

    def _ask_retry_server_error (self, message):
        if self._lock:
            gtk.gdk.threads_enter ()

        try:
            msg = _("CUPS server error (%s)") % self._operation_stack[0]
        except IndexError:
            msg = _("CUPS server error")

        d = gtk.MessageDialog (self._parent,
                               gtk.DIALOG_MODAL |
                               gtk.DIALOG_DESTROY_WITH_PARENT,
                               gtk.MESSAGE_ERROR,
                               gtk.BUTTONS_NONE,
                               msg)
                               
        d.format_secondary_text (_("There was an error during the "
                                   "CUPS operation: '%s'." % message))
        d.add_buttons (gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                       _("Retry"), gtk.RESPONSE_OK)
        d.set_default_response (gtk.RESPONSE_OK)
        if self._lock:
            d.connect ("response", self._on_retry_server_error_response)
            gtk.gdk.threads_leave ()
        else:
            self._retry_response = d.run ()
            d.destroy ()

    def _on_retry_server_error_response (self, dialog, response):
        self._retry_response = response
        dialog.destroy ()
        self._gui_event.set ()

    def _failed (self, forbidden=False):
        self._has_failed = True
        self._forbidden = forbidden

    def _password_callback (self, prompt):
        debugprint ("Got password callback")
        if self._cancel or self._auth_called:
            return ''

        self._auth_called = True
        self._prompt = prompt
        return self._use_password

    def _perform_authentication (self):
        self._passes += 1

        debugprint ("Authentication pass: %d" % self._passes)
        if self._passes == 1:
            # Haven't yet tried the operation.  Set the password
            # callback and return > 0 so we try it for the first time.
            self._has_failed = False
            self._forbidden = False
            self._auth_called = False
            self._cancel = False
            self._cannot_auth = False
            self._dialog_shown = False
            cups.setPasswordCB (self._password_callback)
            debugprint ("Authentication: password callback set")
            return 1

        debugprint ("Forbidden: %s" % self._forbidden)
        if not self._has_failed:
            # Tried the operation and it worked.  Return 0 to signal to
            # break out of the loop.
            debugprint ("Authentication: Operation successful")
            return 0

        # Reset failure flag.
        self._has_failed = False

        if self._passes >= 2:
            # Tried the operation without a password and it failed.
            if (self._try_as_root and
                self._user != 'root' and
                (self._server[0] == '/' or self._forbidden)):
                # This is a UNIX domain socket connection so we should
                # not have needed a password (or it is not a UDS but
                # we got an HTTP_FORBIDDEN response), and so the
                # operation must not be something that the current
                # user is authorised to do.  They need to try as root,
                # and supply the password.  However, to get the right
                # prompt, we need to try as root but with no password
                # first.
                debugprint ("Authentication: Try as root")
                self._use_user = 'root'
                self._auth_called = False
                try:
                    self._connect (allow_pk=False)
                except RuntimeError:
                    raise cups.IPPError (cups.IPP_SERVICE_UNAVAILABLE,
                                         'server-error-service-unavailable')

                return 1

        if not self._prompt_allowed:
            debugprint ("Authentication: prompting not allowed")
            self._cancel = True
            return 1

        if not self._auth_called:
            # We aren't even getting a chance to supply credentials.
            debugprint ("Authentication: giving up")
            self._cancel = True
            self._cannot_auth = True
            return 1

        # Reset the flag indicating whether we were given an auth callback.
        self._auth_called = False

        # If we're previously prompted, explain why we're prompting again.
        if self._dialog_shown:
            if self._lock:
                self._gui_event.clear ()
                gobject.timeout_add (1, self._show_not_authorized_dialog)
                self._gui_event.wait ()
            else:
                self._show_not_authorized_dialog ()

        if self._lock:
            self._gui_event.clear ()
            gobject.timeout_add (1, self._perform_authentication_with_dialog)
            self._gui_event.wait ()
        else:
            self._perform_authentication_with_dialog ()

        if self._cancel:
            debugprint ("cancelled")
            return -1

        cups.setUser (self._use_user)
        debugprint ("Authentication: Reconnect")
        try:
            self._connect (allow_pk=False)
        except RuntimeError:
            raise cups.IPPError (cups.IPP_SERVICE_UNAVAILABLE,
                                 'server-error-service-unavailable')

        return 1

    def _show_not_authorized_dialog (self):
        if self._lock:
            gtk.gdk.threads_enter ()
        d = gtk.MessageDialog (self._parent,
                               gtk.DIALOG_MODAL |
                               gtk.DIALOG_DESTROY_WITH_PARENT,
                               gtk.MESSAGE_ERROR,
                               gtk.BUTTONS_CLOSE)
        d.set_title (_("Not authorized"))
        d.set_markup ('<span weight="bold" size="larger">' +
                      _("Not authorized") + '</span>\n\n' +
                      _("The password may be incorrect."))
        if self._lock:
            d.connect ("response", self._on_not_authorized_dialog_response)
            d.show_all ()
            d.show_now ()
            gtk.gdk.threads_leave ()
        else:
            d.run ()
            d.destroy ()

    def _on_not_authorized_dialog_response (self, dialog, response):
        self._gui_event.set ()
        dialog.destroy ()

    def _perform_authentication_with_dialog (self):
        if self._lock:
            gtk.gdk.threads_enter ()

        # Prompt.
        if len (self._operation_stack) > 0:
            try:
                title = _("Authentication (%s)") % self._operation_stack[0]
            except IndexError:
                title = _("Authentication")

            debugprint("FIXME KDE AuthDialog not yet implemented")
            d = AuthDialog (title=title,
                            parent=self._parent)
        else:
            debugprint("FIXME KDE AuthDialog not yet implemented")
            d = AuthDialog (parent=self._parent)

        d.set_prompt (self._prompt)
        d.set_auth_info ([self._use_user, ''])
        d.field_grab_focus ('password')
        d.set_keep_above (True)
        d.show_all ()
        d.show_now ()
        self._dialog_shown = True
        if self._lock:
            d.connect ("response", self._on_authentication_response)
            gtk.gdk.threads_leave ()
        else:
            response = d.run ()
            self._on_authentication_response (d, response)

    def _on_authentication_response (self, dialog, response):
        (self._use_user,
         self._use_password) = dialog.get_auth_info ()
        global_authinfocache.cache_auth_info ((self._use_user,
                                               self._use_password),
                                              host=self._server,
                                              port=self._port)
        dialog.destroy ()

        if (response == gtk.RESPONSE_CANCEL or
            response == gtk.RESPONSE_DELETE_EVENT):
            self._cancel = True

        if self._lock:
            self._gui_event.set ()

if __name__ == '__main__':
    # Test it out.
    gtk.gdk.threads_init ()
    from timedops import TimedOperation
    set_debugging (True)
    c = TimedOperation (Connection, args=(None,)).run ()
    debugprint ("Connected")
    c._set_lock (True)
    print TimedOperation (c.getFile,
                          args=('/admin/conf/cupsd.conf',
                                '/dev/stdout')).run ()