summaryrefslogtreecommitdiffstats
path: root/relogin.cgi
blob: 798bba00d50fd65a7274f75b0ceea79e6184004d (plain)
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
#!/usr/bin/perl -T
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

use 5.14.0;
use strict;
use warnings;

use lib qw(. lib local/lib/perl5);

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') {
    my $user = Bugzilla->login(LOGIN_REQUIRED);

    my $target_login = $cgi->param('target_login');
    my $reason = $cgi->param('reason') || '';

    if ($user->authorizer->can_login) {
        my $password = $cgi->param('password')
          or ThrowUserError('sudo_password_required',
                            { target_login => $target_login, reason => $reason });
        $user->check_current_password($password);
    }

    # 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 });
    }

    # Get & verify the target user (the user who we will be impersonating)
    my $target_user = new Bugzilla::User({ name => $target_login });
    unless (defined($target_user)
            && $target_user->id
            && $user->can_see_user($target_user))
    {
        ThrowUserError('user_match_failed', { name => $target_login });
    }

    if ($target_user->in_group('bz_sudo_protect')) {
        ThrowUserError('sudo_protected', { login => $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 = $cgi->param('token');
    my ($token_user, $token_timestamp, $token_data) =
        Bugzilla::Token::GetTokenData($token);
    unless (defined($token_user)
            && defined($token_data)
            && ($token_user == $user->id)
            && ($token_data eq 'sudo_prepared'))
    {
        ThrowUserError('sudo_preparation_required', 
                       { target_login => $target_login, reason => $reason });
    }
    delete_token($token);

    # 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
    $token = Bugzilla::Token::_create_token($user->id, 'sudo', $target_user->id);

    my %args;
    if (Bugzilla->params->{ssl_redirect}) {
        $args{'-secure'} = 1;
    }

    $cgi->send_cookie('-name'    => 'sudo',
                      '-expires' => $time_string,
                      '-value'   => $token,
                      '-httponly' => 1,
                      %args);

    # 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.

    # If we have a reason passed in, keep it under 200 characters
    $reason = substr($reason, 0, 200);

    # Go ahead and send out the message now
    my $message;
    my $mail_template = Bugzilla->template_inner($target_user->setting('lang'));
    $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());