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
|
# 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.
package Bugzilla::Extension::GitHubAuth::Login;
use 5.10.1;
use strict;
use warnings;
use base qw(Bugzilla::Auth::Login);
use fields qw(github_failure);
use Scalar::Util qw(blessed);
use Bugzilla::Constants qw(AUTH_NODATA AUTH_ERROR USAGE_MODE_BROWSER);
use Bugzilla::Util qw(trick_taint correct_urlbase generate_random_password);
use Bugzilla::Token qw(issue_short_lived_session_token set_token_extra_data);
use List::MoreUtils qw(any);
use Bugzilla::Extension::GitHubAuth::Client;
use Bugzilla::Extension::GitHubAuth::Client::Error ();
use Bugzilla::Error;
use constant { requires_verification => 1,
is_automatic => 1,
user_can_create_account => 1 };
sub get_login_info {
my ($self) = @_;
my $cgi = Bugzilla->cgi;
my $github_action = Bugzilla->request_cache->{github_action};
return { failure => AUTH_NODATA } unless $github_action;
my $response;
if ($github_action eq 'login') {
$response = $self->_get_login_info_from_github();
}
elsif ($github_action eq 'email') {
$response = $self->_get_login_info_from_email();
}
if (!exists $response->{failure}) {
if (exists $response->{user}) {
# existing account
my $user = $response->{user};
return { failure => AUTH_ERROR,
user_error => 'github_auth_account_too_powerful' } if $user->in_group('no-github-auth');
return { failure => AUTH_ERROR,
user_error => 'mfa_prevents_login',
details => { provider => 'GitHub' } } if $user->mfa;
$response = {
username => $user->login,
user_id => $user->id,
github_auth => 1,
};
}
else {
# new account
my $email = $response->{email};
$response = {
username => $email,
github_auth => 1,
};
}
}
return $response;
}
sub _get_login_info_from_github {
my ($self) = @_;
my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
my $code = $cgi->param('code');
return { failure => AUTH_ERROR, error => 'github_missing_code' } unless $code;
trick_taint($code);
my $client = Bugzilla::Extension::GitHubAuth::Client->new;
my ($access_token, $emails);
eval {
# The following variable lets us catch and return (rather than throw) errors
# from our github client code, as required by the Auth API.
local $Bugzilla::Extension::GitHubAuth::Client::Error::USE_EXCEPTION_OBJECTS = 1;
$access_token = $client->get_access_token($code);
$emails = $client->get_user_emails($access_token);
};
my $e = $@;
if (blessed $e && $e->isa('Bugzilla::Extension::GitHubAuth::Client::Error')) {
my $key = $e->type eq 'user' ? 'user_error' : 'error';
return { failure => AUTH_ERROR, $key => $e->error, details => $e->vars };
}
elsif ($e) {
die $e;
}
my @emails = map { $_->{email} }
grep { $_->{verified} && $_->{email} !~ /\@users\.noreply\.github\.com$/ } @$emails;
my @bugzilla_users;
my @github_emails;
foreach my $email (@emails) {
my $user = Bugzilla::User->new({name => $email, cache => 1});
if ($user) {
push @bugzilla_users, $user;
}
else {
push @github_emails, $email;
}
}
my @allowed_bugzilla_users = grep { not $_->in_group('no-github-auth') } @bugzilla_users;
if (@allowed_bugzilla_users == 1) {
my ($user) = @allowed_bugzilla_users;
return { user => $user };
}
elsif (@allowed_bugzilla_users > 1) {
$self->{github_failure} = {
template => 'account/auth/github-verify-account.html.tmpl',
vars => {
bugzilla_users => \@allowed_bugzilla_users,
choose_email => _mk_choose_email(\@emails),
},
};
return { failure => AUTH_NODATA };
}
elsif (@allowed_bugzilla_users == 0 && @bugzilla_users > 0 && @github_emails == 0) {
return { failure => AUTH_ERROR,
user_error => 'github_auth_account_too_powerful' };
}
elsif (@github_emails) {
$self->{github_failure} = {
template => 'account/auth/github-verify-account.html.tmpl',
vars => {
github_emails => \@github_emails,
choose_email => _mk_choose_email(\@emails),
},
};
return { failure => AUTH_NODATA };
}
else {
return { failure => AUTH_ERROR, user_error => 'github_no_emails' };
}
}
sub _get_login_info_from_email {
my ($self) = @_;
my $cgi = Bugzilla->cgi;
my $email = $cgi->param('email') or return { failure => AUTH_ERROR,
user_error => 'github_invalid_email',
details => { email => '' } };
trick_taint($email);
unless (any { $_ eq $email } @{ Bugzilla->request_cache->{github_emails} }) {
return { failure => AUTH_ERROR,
user_error => 'github_invalid_email',
details => { email => $email }};
}
my $user = Bugzilla::User->new({name => $email, cache => 1});
$cgi->remove_cookie('Bugzilla_github_token');
return $user ? { user => $user } : { email => $email };
}
sub fail_nodata {
my ($self) = @_;
my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
ThrowUserError('login_required') if Bugzilla->usage_mode != USAGE_MODE_BROWSER;
my $file = $self->{github_failure}{template} // "account/auth/login.html.tmpl";
my $vars = $self->{github_failure}{vars} // { target => $cgi->url(-relative=>1) };
print $cgi->header();
$template->process($file, $vars) or ThrowTemplateError($template->error());
exit;
}
sub _store_emails {
my ($emails) = @_;
my $state = issue_short_lived_session_token("github_email");
set_token_extra_data($state, { type => 'github_email',
emails => $emails,
target_uri => Bugzilla->request_cache->{github_target_uri} });
Bugzilla->cgi->send_cookie(-name => 'github_state',
-value => $state,
-httponly => 1);
return $state;
}
sub _mk_choose_email {
my ($emails) = @_;
my $state = _store_emails($emails);
return sub {
my $email = shift;
my $uri = URI->new(correct_urlbase() . "github.cgi");
$uri->query_form( state => $state, email => $email );
return $uri;
};
}
1;
|
