由于没有人回复，这是我能想到的最好的。我对 *UPDATED 有自己的评论，所以你知道我在哪里更新了代码。
在\moodle\lib\moodlelib.php 下
（不幸的是，由于身份验证调用会触发重复创建，我不得不更新此文件）。
1) 更新函数 authenticate_user_login()；将第 4342 - 4382 行替换为：
$authsenabled = get_enabled_auth_plugins();
// *UPDATED - begin
$authplugin = get_auth_plugin('DB');
$userinfo = ($authplugin->get_userinfo($username)) ? $authplugin->get_userinfo($username) : 0;
// *UPDATED - end
// *UPDATED - added second elseif
if ($user = get_complete_user_data('username', $username, $CFG->mnet_localhost_id)) {
// Use manual if auth not set.
$auth = empty($user->auth) ? 'manual' : $user->auth;
if (!empty($user->suspended)) {
add_to_log(SITEID, 'login', 'error', 'index.php', $username);
error_log('[client '.getremoteaddr()."] $CFG->wwwroot Suspended Login: $username ".$_SERVER['HTTP_USER_AGENT']);
$failurereason = AUTH_LOGIN_SUSPENDED;
return false;
}
if ($auth=='nologin' or !is_enabled_auth($auth)) {
add_to_log(SITEID, 'login', 'error', 'index.php', $username);
error_log('[client '.getremoteaddr()."] $CFG->wwwroot Disabled Login: $username ".$_SERVER['HTTP_USER_AGENT']);
// Legacy way to suspend user.
$failurereason = AUTH_LOGIN_SUSPENDED;
return false;
}
$auths = array($auth);
}
elseif ($user = get_complete_user_data('idnumber', $userinfo['idnumber'], $CFG->mnet_localhost_id)) {
$auth = empty($user->auth) ? 'manual' : $user->auth; // use manual if auth not set
if (!empty($user->suspended)) {
add_to_log(SITEID, 'login', 'error', 'index.php', $username);
error_log('[client '.getremoteaddr()."] $CFG->wwwroot Suspended Login: $username ".$_SERVER['HTTP_USER_AGENT']);
$failurereason = AUTH_LOGIN_SUSPENDED;
return false;
}
if ($auth=='nologin' or !is_enabled_auth($auth)) {
add_to_log(SITEID, 'login', 'error', 'index.php', $username);
error_log('[client '.getremoteaddr()."] $CFG->wwwroot Disabled Login: $username ".$_SERVER['HTTP_USER_AGENT']);
$failurereason = AUTH_LOGIN_SUSPENDED; // Legacy way to suspend user.
return false;
}
$auths = array($auth);
}
else {
// Check if there's a deleted record (cheaply), this should not happen because we mangle usernames in delete_user().
if ($DB->get_field('user', 'id', array('username' => $username, 'mnethostid' => $CFG->mnet_localhost_id, 'deleted' => 1))) {
error_log('[client '.getremoteaddr()."] $CFG->wwwroot Deleted Login: $username ".$_SERVER['HTTP_USER_AGENT']);
$failurereason = AUTH_LOGIN_NOUSER;
return false;
}
// Do not try to authenticate non-existent accounts when user creation is not disabled.
if (!empty($CFG->authpreventaccountcreation)) {
add_to_log(SITEID, 'login', 'error', 'index.php', $username);
error_log('[client '.getremoteaddr()."] $CFG->wwwroot Unknown user, can not create new accounts: $username ".$_SERVER['HTTP_USER_AGENT']);
$failurereason = AUTH_LOGIN_NOUSER;
return false;
}
// User does not exist.
$auths = $authsenabled;
$user = new stdClass();
$user->id = 0;
}
2) 相同的功能，将第 4408 - 4427 行替换为：
if ($user->id) {
// User already exists in database.
if (empty($user->auth)) {
// For some reason auth isn't set yet.
// *UPDATED $DB->set_field('user', 'auth', $auth, array('username'=>$username));
$DB->set_field('user', 'auth', $auth, array('idnumber'=>$user->idnumber));
$user->auth = $auth;
}
// If the existing hash is using an out-of-date algorithm (or the legacy md5 algorithm), then we should update to
// the current hash algorithm while we have access to the user's password.
update_internal_user_password($user, $password);
if ($authplugin->is_synchronised_with_external()) {
// Update user record from external DB.
// *UPDATED $user = update_user_record($username);
$user = $authplugin->update_user_record($username, $user->idnumber);
}
} else {
// Create account, we verified above that user creation is allowed.
$user = create_user_record($username, $password, $auth);
}
在\moodle\auth\db\auth.php 下 （外部数据库插件库）
1) 更新函数 update_user_record() 以接收 IDNUMBER 参数：
function update_user_record($username, $idnumber='', $updatekeys=false) {
2) 将第 512 行替换为：
$user = $DB->get_record('user', array('idnumber'=>$idnumber, 'mnethostid'=>$CFG->mnet_localhost_id));
所以现在，moodle lib下的主要功能将通过用户名检查用户是否存在，如果不存在，则检查用户ID是否存在......如果存在，它将使用来自外部数据库的新信息更新用户信息。对我来说，它在 Moodle 2.4 和 2.6 上运行良好。