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
|
#!/usr/bin/perl -wT
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Terry Weissman <terry@mozilla.org>
# Gervase Markham <gerv@gerv.net>
# A. Karl Kornel <karl@kornel.name>
use strict;
use lib qw(. lib);
use Bugzilla;
use Bugzilla::Mailer;
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::Token;
use Bugzilla::User;
use Bugzilla::Util;
use Date::Format;
my $template = Bugzilla->template;
my $cgi = Bugzilla->cgi;
my $action = $cgi->param('action') || '';
my $vars = {};
my $target;
if (!$action) {
# redirect to index.cgi if no action is defined.
print $cgi->redirect(correct_urlbase() . 'index.cgi');
exit;
}
# prepare-sudo: Display the sudo information & login page
elsif ($action eq 'prepare-sudo') {
# We must have a logged-in user to do this
# That user must be in the 'bz_sudoers' group
my $user = Bugzilla->login(LOGIN_REQUIRED);
unless ($user->in_group('bz_sudoers')) {
ThrowUserError('auth_failure', { group => 'bz_sudoers',
action => 'begin',
object => 'sudo_session' }
);
}
# Do not try to start a new session if one is already in progress!
if (defined(Bugzilla->sudoer)) {
ThrowUserError('sudo_in_progress', { target => $user->login });
}
# Keep a temporary record of the user visiting this page
$vars->{'token'} = issue_session_token('sudo_prepared');
# Show the sudo page
$vars->{'target_login_default'} = $cgi->param('target_login');
$vars->{'reason_default'} = $cgi->param('reason');
$target = 'admin/sudo.html.tmpl';
}
# begin-sudo: Confirm login and start sudo session
elsif ($action eq 'begin-sudo') {
# We must be sure that the user is authenticating by providing a login
# and password.
# We only need to do this for authentication methods that involve Bugzilla
# directly obtaining a login (i.e. normal CGI login), as opposed to other
# methods (like Environment vars login).
# First, record if Bugzilla_login and Bugzilla_password were provided
my $credentials_provided;
if (defined($cgi->param('Bugzilla_login'))
&& defined($cgi->param('Bugzilla_password')))
{
$credentials_provided = 1;
}
# Next, log in the user
my $user = Bugzilla->login(LOGIN_REQUIRED);
# At this point, the user is logged in. However, if they used a method
# where they could have provided a username/password (i.e. CGI), but they
# did not provide a username/password, then throw an error.
if ($user->authorizer->can_login && !$credentials_provided) {
ThrowUserError('sudo_password_required',
{ target_login => $cgi->param('target_login'),
reason => $cgi->param('reason')});
}
# The user must be in the 'bz_sudoers' group
unless ($user->in_group('bz_sudoers')) {
ThrowUserError('auth_failure', { group => 'bz_sudoers',
action => 'begin',
object => 'sudo_session' }
);
}
# Do not try to start a new session if one is already in progress!
if (defined(Bugzilla->sudoer)) {
ThrowUserError('sudo_in_progress', { target => $user->login });
}
# Did the user actually go trough the 'sudo-prepare' action? Do some
# checks on the token the action should have left.
my ($token_user, $token_timestamp, $token_data) =
Bugzilla::Token::GetTokenData($cgi->param('token'));
unless (defined($token_user)
&& defined($token_data)
&& ($token_user == $user->id)
&& ($token_data eq 'sudo_prepared'))
{
ThrowUserError('sudo_preparation_required',
{ target_login => scalar $cgi->param('target_login'),
reason => scalar $cgi->param('reason')});
}
delete_token($cgi->param('token'));
# Get & verify the target user (the user who we will be impersonating)
my $target_user =
new Bugzilla::User({ name => $cgi->param('target_login') });
unless (defined($target_user)
&& $target_user->id
&& $user->can_see_user($target_user))
{
ThrowUserError('user_match_failed',
{ 'name' => $cgi->param('target_login') }
);
}
if ($target_user->in_group('bz_sudo_protect')) {
ThrowUserError('sudo_protected', { login => $target_user->login });
}
# If we have a reason passed in, keep it under 200 characters
my $reason = $cgi->param('reason') || '';
$reason = substr($reason, 0, 200);
# Calculate the session expiry time (T + 6 hours)
my $time_string = time2str('%a, %d-%b-%Y %T %Z', time + MAX_SUDO_TOKEN_AGE, 'GMT');
# For future sessions, store the unique ID of the target user
my $token = Bugzilla::Token::_create_token($user->id, 'sudo', $target_user->id);
$cgi->send_cookie('-name' => 'sudo',
'-expires' => $time_string,
'-value' => $token
);
# For the present, change the values of Bugzilla::user & Bugzilla::sudoer
Bugzilla->sudo_request($target_user, $user);
# NOTE: If you want to log the start of an sudo session, do it here.
# Go ahead and send out the message now
my $message;
my $mail_template = Bugzilla->template_inner($target_user->settings->{'lang'}->{'value'});
$mail_template->process('email/sudo.txt.tmpl', { reason => $reason }, \$message);
MessageToMTA($message);
$vars->{'message'} = 'sudo_started';
$vars->{'target'} = $target_user->login;
$target = 'global/message.html.tmpl';
}
# end-sudo: End the current sudo session (if one is in progress)
elsif ($action eq 'end-sudo') {
# Regardless of our state, delete the sudo cookie if it exists
my $token = $cgi->cookie('sudo');
$cgi->remove_cookie('sudo');
# Are we in an sudo session?
Bugzilla->login(LOGIN_OPTIONAL);
my $sudoer = Bugzilla->sudoer;
if (defined($sudoer)) {
Bugzilla->sudo_request($sudoer, undef);
}
# Now that the session is over, remove the token from the DB.
delete_token($token);
# NOTE: If you want to log the end of an sudo session, so it here.
$vars->{'message'} = 'sudo_ended';
$target = 'global/message.html.tmpl';
}
# No valid action found
else {
Bugzilla->login(LOGIN_OPTIONAL);
ThrowUserError('unknown_action', {action => $action});
}
# Display the template
print $cgi->header();
$template->process($target, $vars)
|| ThrowTemplateError($template->error());
|
