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<?php
class UserHelper {
static function authenticate(string $login = null, string $password = null, bool $check_only = false, string $service = null) {
if (!SINGLE_USER_MODE) {
$user_id = false;
$auth_module = false;
PluginHost::getInstance()->chain_hooks_callback(PluginHost::HOOK_AUTH_USER,
function ($result, $plugin) use (&$user_id, &$auth_module) {
if ($result) {
$user_id = (int)$result;
$auth_module = strtolower(get_class($plugin));
return true;
}
},
$login, $password, $service);
if ($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"] = $row["pwd_hash"];
Pref_Prefs::_init_user_prefs($_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));
$_SESSION["ip_address"] = UserHelper::get_user_ip();
Pref_Prefs::_init_user_prefs($_SESSION["uid"]);
return true;
}
}
static function load_user_plugins(int $owner_uid, PluginHost $pluginhost = null) {
if (!$pluginhost) $pluginhost = PluginHost::getInstance();
if ($owner_uid && SCHEMA_VERSION >= 100 && empty($_SESSION["safe_mode"])) {
$plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
$pluginhost->load((string)$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 (!\Sessions\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"])) {
UserHelper::logout();
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];
}
}
static function find_user_by_login(string $login) {
$pdo = Db::pdo();
$sth = $pdo->prepare("SELECT id FROM ttrss_users WHERE
LOWER(login) = LOWER(?)");
$sth->execute([$login]);
if ($row = $sth->fetch()) {
return $row["id"];
}
return false;
}
static function logout() {
if (session_status() === PHP_SESSION_ACTIVE)
session_destroy();
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/');
}
session_commit();
}
static function reset_password($uid, $format_output = false) {
$pdo = Db::pdo();
$sth = $pdo->prepare("SELECT login FROM ttrss_users WHERE id = ?");
$sth->execute([$uid]);
if ($row = $sth->fetch()) {
$login = $row["login"];
$new_salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
$tmp_user_pwd = make_password();
$pwd_hash = encrypt_password($tmp_user_pwd, $new_salt, true);
$sth = $pdo->prepare("UPDATE ttrss_users
SET pwd_hash = ?, salt = ?, otp_enabled = false
WHERE id = ?");
$sth->execute([$pwd_hash, $new_salt, $uid]);
$message = T_sprintf("Changed password of user %s to %s", "<strong>$login</strong>", "<strong>$tmp_user_pwd</strong>");
if ($format_output)
print_notice($message);
else
print $message;
}
}
}
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