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# 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 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::Extension::GitHubAuth::Client;
use Bugzilla::Extension::GitHubAuth::Client::Error ();
use Bugzilla::Extension::GitHubAuth::Util qw(target_uri);
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_login = $cgi->param('github_login');
my $github_email = $cgi->param('github_email');
my $github_email_key = $cgi->param('github_email_key');
my $cookie = $cgi->cookie('Bugzilla_github_token');
unless ($cookie) {
$cgi->send_cookie(-name => 'Bugzilla_github_token',
-value => generate_random_password(),
Bugzilla->params->{'ssl_redirect'} ? ( -secure => 1 ) : (),
-httponly => 1);
}
return { failure => AUTH_NODATA } unless $github_login;
if ($github_email_key && $github_email) {
trick_taint($github_email);
trick_taint($github_email_key);
return $self->_get_login_info_from_email($github_email, $github_email_key);
}
else {
return $self->_get_login_info_from_github();
}
}
sub _get_login_info_from_github {
my ($self) = @_;
my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
my $state = $cgi->param('state');
my $code = $cgi->param('code');
return { failure => AUTH_ERROR, error => 'github_missing_code' } unless $code;
return { failure => AUTH_ERROR, error => 'github_invalid_state' } unless $state;
trick_taint($code);
trick_taint($state);
my $target = target_uri();
my $client = Bugzilla::Extension::GitHubAuth::Client->new;
if ($state ne $client->get_state($target)) {
return { failure => AUTH_ERROR, error => 'github_invalid_state' };
}
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 { $_->{verified} } @$emails;
my $choose_email = sub {
my ($email) = @_;
my $uri = $target->clone;
my $key = Bugzilla::Extension::GitHubAuth::Client->get_email_key($email);
$uri->query_param(github_email => $email);
$uri->query_param(github_email_key => $key);
return $uri;
};
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;
$cgi->remove_cookie('Bugzilla_github_token');
return { username => $user->login, user_id => $user->id, github_auth => 1 };
}
elsif (@allowed_bugzilla_users > 1) {
$self->{github_failure} = {
template => 'account/auth/github-verify-account.html.tmpl',
vars => {
bugzilla_users => \@allowed_bugzilla_users,
choose_email => $choose_email,
},
};
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 => $choose_email,
},
};
return { failure => AUTH_NODATA };
}
else {
return { failure => AUTH_ERROR, user_error => 'github_no_emails' };
}
}
sub _get_login_info_from_email {
my ($self, $github_email, $github_email_key) = @_;
my $cgi = Bugzilla->cgi;
my $key = Bugzilla::Extension::GitHubAuth::Client->get_email_key($github_email);
unless ($github_email_key eq $key) {
return { failure => AUTH_ERROR,
user_error => 'github_invalid_email',
details => { email => $github_email }};
}
my $user = Bugzilla::User->new({name => $github_email, cache => 1});
return { failure => AUTH_ERROR,
user_error => 'github_auth_account_too_powerful' } if $user && $user->in_group('no-github-auth');
$cgi->remove_cookie('Bugzilla_github_token');
return { username => $github_email, github_auth => 1 };
}
sub fail_nodata {
my ($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;
}
1;
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