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Merge pull request #10277 from very-ape/authenticate-hook

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Bug fix: allow authentication addons to create users again.
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Hypolite Petovan 2021-05-20 15:05:55 -04:00 committed by GitHub
commit 315dddbcb9
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1 changed files with 53 additions and 16 deletions
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69
src/Model/User.php
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@ -515,7 +515,27 @@ class User
*/
public static function getIdFromPasswordAuthentication($user_info, $password, $third_party = false)
{
$user = self::getAuthenticationInfo($user_info);
// Addons registered with the "authenticate" hook may create the user on the
// fly. `getAuthenticationInfo` will fail if the user doesn't exist yet. If
// the user doesn't exist, we should give the addons a chance to create the
// user in our database, if applicable, before re-throwing the exception if
// they fail.
try {
$user = self::getAuthenticationInfo($user_info);
} catch (Exception $e) {
$username = (is_string($user_info) ? $user_info : $user_info['nickname'] ?? '');
// Addons can create users, and since this 'catch' branch should only
// execute if getAuthenticationInfo can't find an existing user, that's
// exactly what will happen here. Creating a numeric username would create
// abiguity with user IDs, possibly opening up an attack vector.
// So let's be very careful about that.
if (empty($username) || is_numeric($username)) {
throw $e;
}
return self::getIdFromAuthenticateHooks($username, $password);
}
if ($third_party && DI::pConfig()->get($user['uid'], '2fa', 'verified')) {
// Third-party apps can't verify two-factor authentication, we use app-specific passwords instead
@ -545,23 +565,40 @@ class User
return $user['uid'];
} else {
$addon_auth = [
'username' => $user['nickname'],
'password' => $password,
'authenticated' => 0,
'user_record' => null
];
return self::getIdFromAuthenticateHooks($user['nickname'], $password); // throws
}
/*
* An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
* Addons should never set 'authenticated' except to indicate success - as hooks may be chained
* and later addons should not interfere with an earlier one that succeeded.
*/
Hook::callAll('authenticate', $addon_auth);
throw new HTTPException\ForbiddenException(DI::l10n()->t('Login failed'));
}
if ($addon_auth['authenticated'] && $addon_auth['user_record']) {
return $user['uid'];
}
/**
* Try to obtain a user ID via "authenticate" hook addons
*
* Returns the user id associated with a successful password authentication
*
* @param string $username
* @param string $password
* @return int User Id if authentication is successful
* @throws HTTPException\ForbiddenException
*/
public static function getIdFromAuthenticateHooks($username, $password)
{
$addon_auth = [
'username' => $username,
'password' => $password,
'authenticated' => 0,
'user_record' => null
];
/*
* An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
* Addons should never set 'authenticated' except to indicate success - as hooks may be chained
* and later addons should not interfere with an earlier one that succeeded.
*/
Hook::callAll('authenticate', $addon_auth);
if ($addon_auth['authenticated'] && $addon_auth['user_record']) {
return $addon_auth['user_record']['uid'];
}
throw new HTTPException\ForbiddenException(DI::l10n()->t('Login failed'));