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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::Auth::Verify;
use 5.10.1;
use strict;
use warnings;
use fields qw();
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::User;
use Bugzilla::Util;
use constant user_can_create_account => 1;
use constant extern_id_used => 0;
sub new {
my ($class, $login_type) = @_;
my $self = fields::new($class);
return $self;
}
sub can_change_password {
return $_[0]->can('change_password');
}
sub create_or_update_user {
my ($self, $params) = @_;
my $dbh = Bugzilla->dbh;
my $extern_id = $params->{extern_id};
my $username = $params->{bz_username} || $params->{username};
my $password = $params->{password} || '*';
my $real_name = $params->{realname} || '';
my $user_id = $params->{user_id};
# A passed-in user_id always overrides anything else, for determining
# what account we should return.
if (!$user_id) {
my $username_user_id = login_to_id($username || '');
my $extern_user_id;
if ($extern_id) {
trick_taint($extern_id);
$extern_user_id = $dbh->selectrow_array('SELECT userid
FROM profiles WHERE extern_id = ?', undef, $extern_id);
}
# If we have both a valid extern_id and a valid username, and they are
# not the same id, then we have a conflict.
if ($username_user_id && $extern_user_id
&& $username_user_id ne $extern_user_id)
{
my $extern_name = Bugzilla::User->new($extern_user_id)->login;
return { failure => AUTH_ERROR, error => "extern_id_conflict",
details => {extern_id => $extern_id,
extern_user => $extern_name,
username => $username} };
}
# If we have a valid username, but no valid id,
# then we have to create the user. This happens when we're
# passed only a username, and that username doesn't exist already.
if ($username && !$username_user_id && !$extern_user_id) {
validate_email_syntax($username)
|| return { failure => AUTH_ERROR,
error => 'auth_invalid_email',
details => {addr => $username} };
# Usually we'd call validate_password, but external authentication
# systems might follow different standards than ours. So in this
# place here, we call trick_taint without checks.
trick_taint($password);
# XXX Theoretically this could fail with an error, but the fix for
# that is too involved to be done right now.
my $user = Bugzilla::User->create({
login_name => $username,
cryptpassword => $password,
realname => $real_name});
$username_user_id = $user->id;
}
# If we have a valid username id and an extern_id, but no valid
# extern_user_id, then we have to set the user's extern_id.
if ($extern_id && $username_user_id && !$extern_user_id) {
$dbh->do('UPDATE profiles SET extern_id = ? WHERE userid = ?',
undef, $extern_id, $username_user_id);
Bugzilla->memcached->clear({ table => 'profiles', id => $username_user_id });
}
# Finally, at this point, one of these will give us a valid user id.
$user_id = $extern_user_id || $username_user_id;
}
# If we still don't have a valid user_id, then we weren't passed
# enough information in $params, and we should die right here.
ThrowCodeError('bad_arg', {argument => 'params', function =>
'Bugzilla::Auth::Verify::create_or_update_user'})
unless $user_id;
my $user = new Bugzilla::User({ id => $user_id, cache => 1 });
# Now that we have a valid User, we need to see if any data has to be
# updated.
my $user_updated = 0;
if ($username && lc($user->login) ne lc($username)) {
validate_email_syntax($username)
|| return { failure => AUTH_ERROR, error => 'auth_invalid_email',
details => {addr => $username} };
$user->set_login($username);
$user_updated = 1;
}
if ($real_name && $user->name ne $real_name) {
# $real_name is more than likely tainted, but we only use it
# in a placeholder and we never use it after this.
trick_taint($real_name);
$user->set_name($real_name);
$user_updated = 1;
}
$user->update() if $user_updated;
return { user => $user };
}
1;
__END__
=head1 NAME
Bugzilla::Auth::Verify - An object that verifies usernames and passwords.
=head1 DESCRIPTION
Bugzilla::Auth::Verify provides the "Verifier" part of the Bugzilla
login process. (For details, see the "STRUCTURE" section of
L<Bugzilla::Auth>.)
It is mostly an abstract class, requiring subclasses to implement
most methods.
Note that callers outside of the C<Bugzilla::Auth> package should never
create this object directly. Just create a C<Bugzilla::Auth> object
and call C<login> on it.
=head1 VERIFICATION METHODS
These are the methods that have to do with the actual verification.
Subclasses MUST implement these methods.
=over 4
=item C<check_credentials($login_data)>
Description: Checks whether or not a username is valid.
Params: $login_data - A C<$login_data> hashref, as described in
L<Bugzilla::Auth>.
This C<$login_data> hashref MUST contain
C<username>, and SHOULD also contain
C<password>.
Returns: A C<$login_data> hashref with C<bz_username> set. This
method may also set C<realname>. It must avoid changing
anything that is already set.
=back
=head1 MODIFICATION METHODS
These are methods that change data in the actual authentication backend.
These methods are optional, they do not have to be implemented by
subclasses.
=over 4
=item C<create_or_update_user($login_data)>
Description: Automatically creates a user account in the database
if it doesn't already exist, or updates the account
data if C<$login_data> contains newer information.
Params: $login_data - A C<$login_data> hashref, as described in
L<Bugzilla::Auth>.
This C<$login_data> hashref MUST contain
either C<user_id>, C<bz_username>, or
C<username>. If both C<username> and C<bz_username>
are specified, C<bz_username> is used as the
login name of the user to create in the database.
It MAY also contain C<extern_id>, in which
case it still MUST contain C<bz_username> or
C<username>.
It MAY contain C<password> and C<realname>.
Returns: A hashref with one element, C<user>, which is a
L<Bugzilla::User> object. May also return a login error
as described in L<Bugzilla::Auth>.
Note: This method is not abstract, it is actually implemented
and creates accounts in the Bugzilla database. Subclasses
should probably all call the C<Bugzilla::Auth::Verify>
version of this function at the end of their own
C<create_or_update_user>.
=item C<change_password($user, $password)>
Description: Modifies the user's password in the authentication backend.
Params: $user - A L<Bugzilla::User> object representing the user
whose password we want to change.
$password - The user's new password.
Returns: Nothing.
=back
=head1 INFO METHODS
These are methods that describe the capabilities of this object.
These are all no-parameter methods that return either C<true> or
C<false>.
=over 4
=item C<user_can_create_account>
Whether or not users can manually create accounts in this type of
account source. Defaults to C<true>.
=item C<extern_id_used>
Whether or not this verifier method uses the extern_id field. If
used, users with editusers permission will be be allowed to
edit the extern_id for all users.
The default value is C<false>.
=back
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