/**
* Processes multi-edit actions.
*
* Accessing requires 'admin.edit' privileges.
*/
function admin_multi_edit()
{
global $txp_user;
require_privs('admin.edit');
$selected = ps('selected');
$method = ps('edit_method');
$changed = array();
$msg = '';
if (!$selected or !is_array($selected)) {
return author_list();
}
$clause = '';
if ($method === 'resetpassword') {
$clause = " AND last_access IS NOT NULL";
} elseif ($method === 'resendactivation') {
$clause = " AND last_access IS NULL";
}
$names = safe_column("name", 'txp_users', "name IN (" . join(',', quote_list($selected)) . ") AND name != '" . doSlash($txp_user) . "'" . $clause);
if (!$names) {
return author_list();
}
switch ($method) {
case 'delete':
$assign_assets = ps('assign_assets');
if (!$assign_assets) {
$msg = array('must_reassign_assets', E_ERROR);
} elseif (in_array($assign_assets, $names)) {
$msg = array('cannot_assign_assets_to_deletee', E_ERROR);
} elseif (remove_user($names, $assign_assets)) {
$changed = $names;
callback_event('authors_deleted', '', 0, $changed);
$msg = 'author_deleted';
}
break;
case 'changeprivilege':
if (change_user_group($names, ps('privs'))) {
$changed = $names;
$msg = 'author_updated';
}
break;
case 'resetpassword':
foreach ($names as $name) {
send_reset_confirmation_request($name);
$changed[] = $name;
}
$msg = 'password_reset_confirmation_request_sent';
break;
case 'resendactivation':
foreach ($names as $name) {
send_account_activation($name);
$changed[] = $name;
}
$msg = 'resend_activation_request_sent';
break;
}
if ($changed) {
return author_list(gTxt($msg, array('{name}' => txpspecialchars(join(', ', $changed)))));
}
author_list($msg);
}
function doTxpValidate()
{
global $logout, $txp_user;
$p_userid = ps('p_userid');
$p_password = ps('p_password');
$p_reset = ps('p_reset');
$stay = ps('stay');
$logout = gps('logout');
$message = '';
$pub_path = preg_replace('|//$|', '/', rhu . '/');
if (cs('txp_login') and strpos(cs('txp_login'), ',')) {
$txp_login = explode(',', cs('txp_login'));
$c_hash = end($txp_login);
$c_userid = join(',', array_slice($txp_login, 0, -1));
} else {
$c_hash = '';
$c_userid = '';
}
if ($logout) {
setcookie('txp_login', '', time() - 3600);
setcookie('txp_login_public', '', time() - 3600, $pub_path);
}
if ($c_userid and strlen($c_hash) == 32) {
$nonce = safe_field('nonce', 'txp_users', "name='" . doSlash($c_userid) . "' AND last_access > DATE_SUB(NOW(), INTERVAL 30 DAY)");
if ($nonce and $nonce === md5($c_userid . pack('H*', $c_hash))) {
// cookie is good
if ($logout) {
// destroy nonce
safe_update('txp_users', "nonce = '" . doSlash(md5(uniqid(mt_rand(), TRUE))) . "'", "name = '" . doSlash($c_userid) . "'");
} else {
// create $txp_user
$txp_user = $c_userid;
}
return $message;
} else {
setcookie('txp_login', $c_userid, time() + 3600 * 24 * 365);
setcookie('txp_login_public', '', time() - 3600, $pub_path);
$message = array(gTxt('bad_cookie'), E_ERROR);
}
} elseif ($p_userid and $p_password) {
$name = txp_validate($p_userid, $p_password);
if ($name !== FALSE) {
$c_hash = md5(uniqid(mt_rand(), TRUE));
$nonce = md5($name . pack('H*', $c_hash));
safe_update('txp_users', "nonce = '" . doSlash($nonce) . "'", "name = '" . doSlash($name) . "'");
setcookie('txp_login', $name . ',' . $c_hash, $stay ? time() + 3600 * 24 * 365 : 0, null, null, null, LOGIN_COOKIE_HTTP_ONLY);
setcookie('txp_login_public', substr(md5($nonce), -10) . $name, $stay ? time() + 3600 * 24 * 30 : 0, $pub_path);
// login is good, create $txp_user
$txp_user = $name;
return '';
} else {
sleep(3);
$message = array(gTxt('could_not_log_in'), E_ERROR);
}
} elseif ($p_reset) {
sleep(3);
include_once txpath . '/lib/txplib_admin.php';
$message = $p_userid ? send_reset_confirmation_request($p_userid) : '';
} elseif (gps('reset')) {
$message = '';
} elseif (gps('confirm')) {
sleep(3);
$confirm = pack('H*', gps('confirm'));
$name = substr($confirm, 5);
$nonce = safe_field('nonce', 'txp_users', "name = '" . doSlash($name) . "'");
if ($nonce and $confirm === pack('H*', substr(md5($nonce), 0, 10)) . $name) {
include_once txpath . '/lib/txplib_admin.php';
$message = reset_author_pass($name);
}
}
$txp_user = '';
return $message;
}
/**
* Validates the sent login form and creates a session.
*
* During the reset request procedure, it is conceivable to verify the
* token as soon as it's presented in the URL, but that would:
* a) require refactoring code similarities in both p_confirm and p_alter branches
* b) require some way (e.g. an Exception) to signal back to doLoginForm() that
* the token is bogus so the 'change your password' form is not displayed.
* c) leak information about the validity of a token, thus allowing rapid brute-force
* attempts.
*
* The inconvenience of a real user following an expired token and being told so
* after they've set a password is a small price to pay for the improved security
* and reduction of attack surface that validating after submission affords.
*
* @todo Could the checks be done via a (reusable) Validator()?
*
* @return string A localised feedback message
* @see doLoginForm()
*/
function doTxpValidate()
{
global $logout, $txp_user;
$p_userid = ps('p_userid');
$p_password = ps('p_password');
$p_reset = ps('p_reset');
$p_alter = ps('p_alter');
$p_set = ps('p_set');
$stay = ps('stay');
$p_confirm = gps('confirm');
$logout = gps('logout');
$message = '';
$pub_path = preg_replace('|//$|', '/', rhu . '/');
if (cs('txp_login') && strpos(cs('txp_login'), ',')) {
$txp_login = explode(',', cs('txp_login'));
$c_hash = end($txp_login);
$c_userid = join(',', array_slice($txp_login, 0, -1));
} else {
$c_hash = '';
$c_userid = '';
}
if ($logout) {
setcookie('txp_login', '', time() - 3600);
setcookie('txp_login_public', '', time() - 3600, $pub_path);
}
if ($c_userid && strlen($c_hash) === 32) {
// Cookie exists.
// @todo Improve security by using a better nonce/salt mechanism. md5 and uniqid are bad.
$r = safe_row("name, nonce", 'txp_users', "name = '" . doSlash($c_userid) . "' AND last_access > DATE_SUB(NOW(), INTERVAL 30 DAY)");
if ($r && $r['nonce'] && $r['nonce'] === md5($c_userid . pack('H*', $c_hash))) {
// Cookie is good.
if ($logout) {
// Destroy nonce.
safe_update('txp_users', "nonce = '" . doSlash(md5(uniqid(mt_rand(), true))) . "'", "name = '" . doSlash($c_userid) . "'");
} else {
// Create $txp_user.
$txp_user = $r['name'];
}
return $message;
} else {
txp_status_header('401 Your session has expired');
setcookie('txp_login', $c_userid, time() + 3600 * 24 * 365);
setcookie('txp_login_public', '', time() - 3600, $pub_path);
$message = array(gTxt('bad_cookie'), E_ERROR);
}
} elseif ($p_userid && $p_password) {
// Incoming login vars.
$name = txp_validate($p_userid, $p_password);
if ($name !== false) {
$c_hash = md5(uniqid(mt_rand(), true));
$nonce = md5($name . pack('H*', $c_hash));
safe_update('txp_users', "nonce = '" . doSlash($nonce) . "'", "name = '" . doSlash($name) . "'");
setcookie('txp_login', $name . ',' . $c_hash, $stay ? time() + 3600 * 24 * 365 : 0, null, null, null, LOGIN_COOKIE_HTTP_ONLY);
setcookie('txp_login_public', substr(md5($nonce), -10) . $name, $stay ? time() + 3600 * 24 * 30 : 0, $pub_path);
// Login is good, create $txp_user.
$txp_user = $name;
return '';
} else {
sleep(3);
txp_status_header('401 Could not log in with that username/password');
$message = array(gTxt('could_not_log_in'), E_ERROR);
}
} elseif ($p_reset) {
// Reset request.
sleep(3);
include_once txpath . '/lib/txplib_admin.php';
$message = $p_userid ? send_reset_confirmation_request($p_userid) : '';
} elseif ($p_alter || $p_set) {
// Password change/set confirmation.
sleep(3);
global $sitename;
$pass = ps('p_password');
$type = $p_alter ? 'password_reset' : 'account_activation';
if (trim($pass) === '') {
$message = array(gTxt('password_required'), E_ERROR);
} else {
$hash = gps('hash');
$selector = substr($hash, SALT_LENGTH);
$tokenInfo = safe_row("reference_id, token, expires", 'txp_token', "selector = '" . doSlash($selector) . "' AND type='{$type}'");
if ($tokenInfo) {
if (strtotime($tokenInfo['expires']) <= time()) {
$message = array(gTxt('token_expired'), E_ERROR);
} else {
$uid = assert_int($tokenInfo['reference_id']);
$row = safe_row("name, email, nonce, pass AS old_pass", 'txp_users', "user_id = {$uid}");
if ($row && $row['nonce'] && $hash === bin2hex(pack('H*', substr(hash(HASHING_ALGORITHM, $row['nonce'] . $selector . $row['old_pass']), 0, SALT_LENGTH))) . $selector) {
if (change_user_password($row['name'], $pass)) {
$body = gTxt('salutation', array('{name}' => $row['name'])) . n . n . ($p_alter ? gTxt('password_change_confirmation') : gTxt('password_set_confirmation') . n . n . gTxt('log_in_at') . ': ' . hu . 'textpattern/index.php');
$message = $p_alter ? gTxt('password_changed') : gTxt('password_set');
txpMail($row['email'], "[{$sitename}] " . $message, $body);
// Invalidate all tokens in the wild for this user.
safe_delete("txp_token", "reference_id = {$uid} AND type IN ('password_reset', 'account_activation')");
}
} else {
$message = array(gTxt('invalid_token'), E_ERROR);
}
}
} else {
$message = array(gTxt('invalid_token'), E_ERROR);
}
}
}
$txp_user = '';
return $message;
}