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
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
## Copyright (C) 2007, 2008 Tim Waugh <twaugh@redhat.com>
## Copyright (C) 2007, 2008 Red Hat, Inc.
## 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.
import cups
from debug import *
class AuthDialog():
def __init__(self):
pass
"""
class AuthDialog(gtk.Dialog):
AUTH_FIELD={'username': _("Username:"),
'password': _("Password:"),
'domain': _("Domain:")}
def __init__ (self, title=_("Authentication"), 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']):
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)
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 field_grab_focus (self, field):
i = self.auth_info_required.index (field)
self.field_entry[i].grab_focus ()
"""
class Connection:
def __init__ (self, parent=None, try_as_root=True):
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._connect ()
self._prompt_allowed = True
def _get_prompt_allowed (self, ):
return self._prompt_allowed
def _set_prompt_allowed (self, allowed):
self._prompt_allowed = allowed
def _connect (self):
cups.setUser (self._use_user)
cups.setServer (self._server)
cups.setPort (self._port)
self._connection = cups.Connection ()
self._user = self._use_user
debugprint ("Connected as user %s" % self._user)
methodtype = type (self._connection.getPrinters)
for fname in dir (self._connection):
if fname[0] == '_':
continue
fn = getattr (self._connection, fname)
if type (fn) != methodtype:
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
while self._perform_authentication () != 0:
if c != self._connection:
# We have reconnected.
fn = getattr (self._connection, fname)
c = self._connection
try:
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 not self._cancel and e == cups.IPP_NOT_AUTHORIZED:
self._failed ()
else:
raise
except cups.HTTPError, (s,):
if not self._cancel and (s == cups.HTTP_UNAUTHORIZED or
s == cups.HTTP_FORBIDDEN):
self._failed (s == cups.HTTP_FORBIDDEN)
else:
raise
return result
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
cups.setPasswordCB (self._password_callback)
debugprint ("Authentication: password callback set")
return 1
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
self._connect ()
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
return 1
# Reset the flag indicating whether we were given an auth callback.
self._auth_called = False
# Prompt.
"""FIXME port dialogue
d = AuthDialog (parent=self._parent)
d.set_prompt (self._prompt)
d.set_auth_info ([self._use_user, ''])
d.field_grab_focus ('password')
response = d.run ()
d.hide ()
"""
response = False
#if response == gtk.RESPONSE_CANCEL:
if response:
self._cancel = True
return -1
(self._use_user,
self._use_password) = d.get_auth_info ()
cups.setUser (self._use_user)
debugprint ("Authentication: Reconnect")
self._connect ()
return 1
if __name__ == '__main__':
# Test it out.
set_debugging (True)
c = Connection (None)
print c.getFile ('/admin/conf/cupsd.conf', '/dev/stdout')
|