| 1 |
<?php |
| 2 |
|
| 3 |
if (!defined('ABSPATH')) exit; |
| 4 |
if (!class_exists('BVCallbackRequest')) : |
| 5 |
class BVCallbackRequest { |
| 6 |
public $params; |
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public $method; |
| 8 |
public $wing; |
| 9 |
public $is_afterload; |
| 10 |
public $is_admin_ajax; |
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public $is_debug; |
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public $account; |
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public $settings; |
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public $sig; |
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public $sighshalgo; |
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public $time; |
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public $version; |
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public $is_sha1; |
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public $bvb64stream; |
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public $bvb64cksize; |
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public $checksum; |
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public $error = array(); |
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public $pubkey_name; |
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public $bvprmsmac; |
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public $bvboundry; |
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|
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public function __construct($account, $in_params, $settings) { |
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$this->params = array(); |
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$this->account = $account; |
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$this->settings = $settings; |
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$this->wing = $in_params['wing']; |
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$this->method = $in_params['bvMethod']; |
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$this->is_afterload = array_key_exists('afterload', $in_params); |
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$this->is_admin_ajax = array_key_exists('adajx', $in_params); |
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$this->is_debug = array_key_exists('bvdbg', $in_params); |
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$this->sig = $in_params['sig']; |
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$this->sighshalgo = !empty($in_params['sighshalgo']) ? $in_params['sighshalgo'] : null; |
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$this->time = intval($in_params['bvTime']); |
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$this->version = $in_params['bvVersion']; |
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$this->is_sha1 = array_key_exists('sha1', $in_params); |
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$this->bvb64stream = isset($in_params['bvb64stream']); |
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$this->bvb64cksize = array_key_exists('bvb64cksize', $in_params) ? intval($in_params['bvb64cksize']) : false; |
| 43 |
$this->checksum = array_key_exists('checksum', $in_params) ? $in_params['checksum'] : false; |
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$this->pubkey_name = !empty($in_params['pubkeyname']) ? |
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WPCOMAccount::sanitizeKey($in_params['pubkeyname']) : 'm_public'; |
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$this->bvprmsmac = !empty($in_params['bvprmsmac']) ? WPCOMAccount::sanitizeKey($in_params['bvprmsmac']) : ""; |
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$this->bvboundry = !empty($in_params['bvboundry']) ? $in_params['bvboundry'] : ""; |
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} |
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|
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public function isAPICall() { |
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return array_key_exists('apicall', $this->params); |
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} |
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|
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public function http_request($url, $body) { |
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$body = http_build_query($body); |
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$response = wp_remote_post($url, array( |
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'body' => $body, |
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'timeout' => 15, |
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'headers' => array( |
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'Content-Type' => 'application/x-www-form-urlencoded', |
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), |
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)); |
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|
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if (is_wp_error($response)) { |
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return false; |
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} |
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|
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return wp_remote_retrieve_body($response); |
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} |
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|
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public function get_params_via_api($params_key, $apiurl) { |
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$res = $this->http_request($apiurl, array('bvkey' => $params_key)); |
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|
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if ($res === FALSE) { |
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return false; |
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} |
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|
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return $res; |
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} |
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|
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public function info() { |
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$info = array( |
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"requestedsig" => $this->sig, |
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"requestedtime" => $this->time, |
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"requestedversion" => $this->version, |
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"error" => $this->error |
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); |
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if ($this->is_debug) { |
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$info["inreq"] = $this->params; |
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} |
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if ($this->is_admin_ajax) { |
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$info["adajx"] = true; |
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} |
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if ($this->is_afterload) { |
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$info["afterload"] = true; |
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} |
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return $info; |
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} |
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|
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public function processParams($in_params) { |
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$params = array(); |
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|
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if (array_key_exists('obend', $in_params) && function_exists('ob_end_clean')) |
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@ob_end_clean(); |
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|
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if (array_key_exists('op_reset', $in_params) && function_exists('output_reset_rewrite_vars')) |
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@output_reset_rewrite_vars(); |
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|
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if (array_key_exists('concat', $in_params)) { |
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foreach ($in_params['concat'] as $key) { |
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$concated = ''; |
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$count = intval($in_params[$key]); |
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for ($i = 1; $i <= $count; $i++) { |
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$concated .= $in_params[$key."_bv_".$i]; |
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} |
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$in_params[$key] = $concated; |
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} |
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} |
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|
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if (isset($in_params['bvpdataviaapi']) && isset($in_params['bvapiurl'])) { |
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$pdata = $this->get_params_via_api($in_params['bvpdataviaapi'], $in_params['bvapiurl']); |
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if ($pdata !== false) { |
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$in_params["bvprms"] = $pdata; |
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} |
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} |
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|
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if (array_key_exists('bvprms', $in_params) && isset($in_params['bvprms'])) { |
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if (!empty($in_params['bvprmshshalgo']) && $in_params['bvprmshshalgo'] === 'sha256') { |
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$calculated_mac = hash_hmac('SHA256', $in_params['bvprms'], $this->account->secret); |
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} else { |
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$calculated_mac = hash_hmac('SHA1', $in_params['bvprms'], $this->account->secret); |
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} |
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|
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if ($this->compare_mac($this->bvprmsmac, $calculated_mac) === true) { |
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|
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if (array_key_exists('b64', $in_params)) { |
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foreach ($in_params['b64'] as $key) { |
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if (is_array($in_params[$key])) { |
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$in_params[$key] = array_map('base64_decode', $in_params[$key]); |
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} else { |
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$in_params[$key] = base64_decode($in_params[$key]); |
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} |
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} |
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} |
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|
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if (array_key_exists('unser', $in_params)) { |
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foreach ($in_params['unser'] as $key) { |
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$in_params[$key] = json_decode($in_params[$key], TRUE); |
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} |
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} |
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|
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if (array_key_exists('sersafe', $in_params)) { |
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$key = $in_params['sersafe']; |
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$in_params[$key] = BVCallbackRequest::serialization_safe_decode($in_params[$key]); |
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} |
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|
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if (array_key_exists('bvprms', $in_params) && isset($in_params['bvprms'])) { |
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$params = $in_params['bvprms']; |
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} |
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|
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if (array_key_exists('clacts', $in_params)) { |
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foreach ($in_params['clacts'] as $action) { |
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remove_all_actions($action); |
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} |
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} |
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|
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if (array_key_exists('clallacts', $in_params)) { |
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global $wp_filter; |
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foreach ( $wp_filter as $filter => $val ){ |
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remove_all_actions($filter); |
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} |
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} |
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|
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if (array_key_exists('memset', $in_params)) { |
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$val = intval($in_params['memset']); |
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@ini_set('memory_limit', $val.'M'); |
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} |
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|
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return $params; |
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} |
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} |
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return false; |
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} |
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|
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private function compare_mac($l_hash, $r_hash) { |
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if (!is_string($l_hash) || !is_string($r_hash)) { |
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return false; |
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} |
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|
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if (strlen($l_hash) !== strlen($r_hash)) { |
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return false; |
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} |
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|
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if (function_exists('hash_equals')) { |
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return hash_equals($l_hash, $r_hash); |
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} else { |
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return $l_hash === $r_hash; |
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} |
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} |
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|
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public static function serialization_safe_decode($data) { |
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if (is_array($data)) { |
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$data = array_map(array('BVCallbackRequest', 'serialization_safe_decode'), $data); |
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} elseif (is_string($data)) { |
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$data = base64_decode($data); |
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} |
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|
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return $data; |
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} |
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|
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public function authenticate() { |
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if (!$this->account) { |
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$this->error["message"] = "ACCOUNT_NOT_FOUND"; |
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return false; |
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} |
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|
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$bv_last_recv_time = $this->settings->getOption('bvLastRecvTime'); |
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if ($this->time < intval($bv_last_recv_time) - 300) { |
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return false; |
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} |
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|
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$data = $this->method.$this->account->secret.$this->time.$this->version.$this->bvprmsmac; |
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if (!$this->verify($data, base64_decode($this->sig), $this->sighshalgo)) { |
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return false; |
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} |
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$this->settings->updateOption('bvLastRecvTime', $this->time); |
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|
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return 1; |
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} |
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|
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public function verify($data, $sig, $sighshalgo) { |
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if (!function_exists('openssl_verify') || !function_exists('openssl_pkey_get_public')) { |
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$this->error["message"] = "OPENSSL_FUNCS_NOT_FOUND"; |
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return false; |
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} |
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|
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$key_file = dirname( __DIR__ ) . '/public_keys/' . $this->pubkey_name . '.pub'; |
| 238 |
if (!file_exists($key_file)) { |
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$this->error["message"] = "PUBLIC_KEY_NOT_FOUND"; |
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return false; |
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} |
| 242 |
|
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$filesystem = WPCOMHelper::get_direct_filesystem(); |
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$public_key_str = $filesystem->get_contents($key_file); |
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|
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$public_key = openssl_pkey_get_public($public_key_str); |
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if (!$public_key) { |
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$this->error["message"] = "UNABLE_TO_LOAD_PUBLIC_KEY"; |
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return false; |
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} |
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|
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if ($sighshalgo === 'sha256') { |
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$verify = openssl_verify($data, $sig, $public_key, OPENSSL_ALGO_SHA256); |
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} else { |
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$verify = openssl_verify($data, $sig, $public_key); |
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} |
| 257 |
if ($verify === 1) { |
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return true; |
| 259 |
} elseif ($verify === 0) { |
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$this->error["message"] = "INCORRECT_SIGNATURE"; |
| 261 |
$this->error["pubkey_sig"] = substr(hash('md5', $public_key_str), 0, 8); |
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} else { |
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$this->error["message"] = "OPENSSL_VERIFY_FAILED"; |
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} |
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return false; |
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} |
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|
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public function corruptedParamsResp() { |
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$bvinfo = new WPCOMInfo($this->settings); |
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|
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return array( |
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"account_info" => $this->account->info(), |
| 273 |
"request_info" => $this->info(), |
| 274 |
"bvinfo" => $bvinfo->info(), |
| 275 |
"statusmsg" => "BVPRMS_CORRUPTED" |
| 276 |
); |
| 277 |
} |
| 278 |
|
| 279 |
public function authFailedResp() { |
| 280 |
$api_public_key = WPCOMAccount::getApiPublicKey($this->settings); |
| 281 |
$default_secret = WPCOMRecover::getDefaultSecret($this->settings); |
| 282 |
$default_account_pubkey = WPCOMAccount::getDefaultPublicKey(); |
| 283 |
$bvinfo = new WPCOMInfo($this->settings); |
| 284 |
$resp = array( |
| 285 |
"request_info" => $this->info(), |
| 286 |
"bvinfo" => $bvinfo->info(), |
| 287 |
"statusmsg" => "FAILED_AUTH", |
| 288 |
"api_pubkey" => substr($api_public_key, 0, 8), |
| 289 |
"def_key_status" => WPCOMRecover::getSecretStatus($this->settings), |
| 290 |
"def_sigmatch" => substr(hash('sha1', $this->method.$default_secret.$this->time.$this->version), 0, 8) |
| 291 |
); |
| 292 |
|
| 293 |
if (is_string($default_account_pubkey) && strlen($default_account_pubkey) >= 32) { |
| 294 |
$resp["default_account_pubkey"] = substr($default_account_pubkey, 0, 8); |
| 295 |
} |
| 296 |
|
| 297 |
if ($this->account) { |
| 298 |
$resp["account_info"] = $this->account->info(); |
| 299 |
$resp["sigmatch"] = substr(hash('sha1', $this->method.$this->account->secret.$this->time.$this->version), 0, 6); |
| 300 |
} else { |
| 301 |
$resp["account_info"] = array("error" => "ACCOUNT_NOT_FOUND"); |
| 302 |
} |
| 303 |
|
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return $resp; |
| 305 |
} |
| 306 |
} |
| 307 |
endif; |
