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<?php
class UserHelper {
static function authenticate($login, $password, $check_only = false, $service = false) {
if (!SINGLE_USER_MODE) {
$user_id = false;
$auth_module = false;
foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_AUTH_USER) as $plugin) {
$user_id = (int) $plugin->authenticate($login, $password, $service);
if ($user_id) {
$auth_module = strtolower(get_class($plugin));
break;
}
}
if ($user_id && !$check_only) {
session_start();
session_regenerate_id(true);
$_SESSION["uid"] = $user_id;
$_SESSION["auth_module"] = $auth_module;
$pdo = Db::pdo();
$sth = $pdo->prepare("SELECT login,access_level,pwd_hash FROM ttrss_users
WHERE id = ?");
$sth->execute([$user_id]);
$row = $sth->fetch();
$_SESSION["name"] = $row["login"];
$_SESSION["access_level"] = $row["access_level"];
$_SESSION["csrf_token"] = bin2hex(get_random_bytes(16));
$usth = $pdo->prepare("UPDATE ttrss_users SET last_login = NOW() WHERE id = ?");
$usth->execute([$user_id]);
$_SESSION["ip_address"] = UserHelper::get_user_ip();
$_SESSION["user_agent"] = sha1($_SERVER['HTTP_USER_AGENT']);
$_SESSION["pwd_hash"] = $row["pwd_hash"];
Pref_Prefs::initialize_user_prefs($_SESSION["uid"]);
return true;
}
return false;
} else {
$_SESSION["uid"] = 1;
$_SESSION["name"] = "admin";
$_SESSION["access_level"] = 10;
$_SESSION["hide_hello"] = true;
$_SESSION["hide_logout"] = true;
$_SESSION["auth_module"] = false;
if (!$_SESSION["csrf_token"])
$_SESSION["csrf_token"] = bin2hex(get_random_bytes(16));
$_SESSION["ip_address"] = UserHelper::get_user_ip();
Pref_Prefs::initialize_user_prefs($_SESSION["uid"]);
return true;
}
}
static function load_user_plugins($owner_uid, $pluginhost = false) {
if (!$pluginhost) $pluginhost = PluginHost::getInstance();
if ($owner_uid && SCHEMA_VERSION >= 100 && empty($_SESSION["safe_mode"])) {
$plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
$pluginhost->load($plugins, PluginHost::KIND_USER, $owner_uid);
/*if (get_schema_version() > 100) {
$pluginhost->load_data();
}*/
}
}
static function login_sequence() {
$pdo = Db::pdo();
if (SINGLE_USER_MODE) {
@session_start();
self::authenticate("admin", null);
startup_gettext();
self::load_user_plugins($_SESSION["uid"]);
} else {
if (!validate_session()) $_SESSION["uid"] = false;
if (empty($_SESSION["uid"])) {
if (AUTH_AUTO_LOGIN && self::authenticate(null, null)) {
$_SESSION["ref_schema_version"] = get_schema_version(true);
} else {
self::authenticate(null, null, true);
}
if (empty($_SESSION["uid"])) {
Pref_Users::logout_user();
Handler_Public::render_login_form();
exit;
}
} else {
/* bump login timestamp */
$sth = $pdo->prepare("UPDATE ttrss_users SET last_login = NOW() WHERE id = ?");
$sth->execute([$_SESSION['uid']]);
$_SESSION["last_login_update"] = time();
}
if ($_SESSION["uid"]) {
startup_gettext();
self::load_user_plugins($_SESSION["uid"]);
}
}
}
static function print_user_stylesheet() {
$value = get_pref('USER_STYLESHEET');
if ($value) {
print "<style type='text/css' id='user_css_style'>";
print str_replace("<br/>", "\n", $value);
print "</style>";
}
}
static function get_user_ip() {
foreach (["HTTP_X_REAL_IP", "REMOTE_ADDR"] as $hdr) {
if (isset($_SERVER[$hdr]))
return $_SERVER[$hdr];
}
}
}
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