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<?php /* This script is a crucial component of BlogVault, MalCare, and WP Remote, which work together to automatically protect your site against crashes, hacks, and other issues. Things to know: * The script runs in the background and won't have any impact on site performance or user experience. * It plays an essential role in our backup service, ensuring the best protection for your site. * The script is safe, secure, and won't interfere with other plugins or scripts. Learn more about how this script helps recover crashed WordPress sites by visiting our website at https://blogvault.net/recover-crashed-wordpress-site/. / class BVGenericCallbackBase { public function objectToArray($obj) { return json_decode(json_encode($obj), true); } public function base64Encode($data, $chunk_size) { if ($chunk_size) { $out = ""; $len = strlen($data); for ($i = 0; $i < $len; $i += $chunk_size) { $out .= base64_encode(substr($data, $i, $chunk_size)); } } else { $out = base64_encode($data); } return $out; } } class BVGenericCallbackResponse extends BVGenericCallbackBase { public $status; public $bvb64cksize; public function __construct($bvb64cksize) { $this->status = array("blogvault" => "response"); $this->bvb64cksize = $bvb64cksize; } public function addStatus($key, $value) { $this->status[$key] = $value; } public function addArrayToStatus($key, $value) { if (!isset($this->status[$key])) { $this->status[$key] = array(); } $this->status[$key][] = $value; } public function terminate($resp = array()) { $resp = array_merge($this->status, $resp); $resp["signature"] = "Blogvault API"; $response = "bvbvbvbvbv".serialize($resp)."bvbvbvbvbv"; $response = "bvb64bvb64".$this->base64Encode($response, $this->bvb64cksize)."bvb64bvb64"; die($response); exit; } } class BVGenericCallbackRequest { public $params; public $method; public $wing; public $is_afterload; public $is_admin_ajax; public $is_debug; public $account; public $calculated_mac; public $sig; public $time; public $version; public $bvb64stream; public $bvb64cksize; public $checksum; public function __construct($account, $in_params) { $this->params = array(); $this->account = $account; $this->wing = $in_params['wing']; $this->method = $in_params['bvMethod']; $this->is_afterload = array_key_exists('afterload', $in_params); $this->is_admin_ajax = array_key_exists('adajx', $in_params); $this->is_debug = array_key_exists('bvdbg', $in_params); $this->sig = $in_params['sig']; $this->time = intval($in_params['bvTime']); $this->version = $in_params['bvVersion']; $this->bvb64stream = isset($in_params['bvb64stream']); $this->bvb64cksize = array_key_exists('bvb64cksize', $in_params) ? intval($in_params['bvb64cksize']) : null; $this->checksum = array_key_exists('checksum', $in_params) ? $in_params['checksum'] : false; } public function isAPICall() { return array_key_exists('apicall', $this->params); } public function info() { $info = array( "requestedsig" => $this->sig, "requestedtime" => $this->time, "requestedversion" => $this->version ); if ($this->is_debug) { $info["inreq"] = $this->params; } if ($this->is_admin_ajax) { $info["adajx"] = true; } if ($this->is_afterload) { $info["afterload"] = true; } if ($this->calculated_mac) { $info["calculated_mac"] = $this->calculated_mac; } return $info; } public function processParams($in_params) { $params = array(); if (array_key_exists('obend', $in_params) && function_exists('ob_end_clean')) @ob_end_clean(); if (array_key_exists('op_reset', $in_params) && function_exists('output_reset_rewrite_vars')) @output_reset_rewrite_vars(); if (array_key_exists('concat', $in_params)) { foreach ($in_params['concat'] as $key) { $concated = ''; $count = intval($in_params[$key]); for ($i = 1; $i <= $count; $i++) { $concated .= $in_params[$key."_bv_".$i]; } $in_params[$key] = $concated; } } if (array_key_exists('bvprms', $in_params) && isset($in_params['bvprms']) && array_key_exists('bvprmsmac', $in_params) && isset($in_params['bvprmsmac'])) { $digest_algo = 'SHA512'; $sent_mac = BVGenericAccount::sanitizeKey($in_params['bvprmsmac']); if (array_key_exists('bvprmshshalgo', $in_params) && isset($in_params['bvprmshshalgo'])) { $digest_algo = $in_params['bvprmshshalgo']; } $calculated_mac = hash_hmac($digest_algo, $in_params['bvprms'], $this->account->secret); $this->calculated_mac = substr($calculated_mac, 0, 6); if ($this->account->compare_mac($sent_mac, $calculated_mac) === true) { if (array_key_exists('b64', $in_params)) { foreach ($in_params['b64'] as $key) { if (is_array($in_params[$key])) { $in_params[$key] = array_map('base64_decode', $in_params[$key]); } else { $in_params[$key] = base64_decode($in_params[$key]); } } } openssl_public_decrypt($in_params['bvprms'], $decrypted, $this->account->pubkey); $in_params['bvprms'] = $decrypted; if (array_key_exists('unser', $in_params)) { foreach ($in_params['unser'] as $key) { $in_params[$key] = json_decode($in_params[$key], TRUE); } } if (array_key_exists('sersafe', $in_params)) { $key = $in_params['sersafe']; $in_params[$key] = BVGenericCallbackRequest::serialization_safe_decode($in_params[$key]); } if (array_key_exists('bvprms', $in_params) && isset($in_params['bvprms'])) { $params = $in_params['bvprms']; } if (array_key_exists('clacts', $in_params)) { foreach ($in_params['clacts'] as $action) { remove_all_actions($action); } } if (array_key_exists('clallacts', $in_params)) { global $wp_filter; foreach ( $wp_filter as $filter => $val ){ remove_all_actions($filter); } } if ((time() - intval($params['bvptime'])) > 120) { return false; } if (array_key_exists('memset', $in_params)) { $val = intval(urldecode($in_params['memset'])); @ini_set('memory_limit', $val.'M'); } return $params; } } return false; } public static function serialization_safe_decode($data) { if (is_array($data)) { $data = array_map(array('BVGenericCallbackRequest', 'serialization_safe_decode'), $data); } elseif (is_string($data)) { $data = base64_decode($data); } return $data; } } class BVGenericAccount { public $settings; public $public; public $secret; public $sig_match; public $pubkey; public function __construct($settings, $public, $secret) { $this->settings = $settings; $this->public = $public; $this->secret = $secret; } public static function find($settings, $public) { $secret = null; if (isset($settings['public']) && $settings['public'] === $public) { $secret = $settings['secret']; } if (empty($secret) \|\| (strlen($secret) < 32)) { return null; } return new self($settings, $public, $secret); } public static function randString($length) { $chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; $str = ""; $size = strlen($chars); for( $i = 0; $i < $length; $i++ ) { $str .= $chars[rand(0, $size - 1)]; } return $str; } public static function sanitizeKey($key) { return preg_replace('/[^a-zA-Z0-9_\-]/', '', $key); } public function info() { return array( "public" => substr($this->public, 0, 6), "sigmatch" => substr($this->sig_match, 0, 6) ); } public function compare_mac($l_hash, $r_hash) { if (!is_string($l_hash) \|\| !is_string($r_hash)) { return false; } if (strlen($l_hash) !== strlen($r_hash)) { return false; } if (function_exists('hash_equals')) { return hash_equals($l_hash, $r_hash); } else { return $l_hash === $r_hash; } } public static function getSigMatch($request, $secret) { $method = $request->method; $time = $request->time; $version = $request->version; $sig_match = hash("sha512", $method.$secret.$time.$version); return $sig_match; } public function authenticate($request) { if ((time() - $request->time) > 300) { return false; } $this->sig_match = self::getSigMatch($request, $this->secret); if ($this->compare_mac($this->sig_match, $request->sig)) { return 1; } return false; } } class BVGenericFSWriteCallback extends BVGenericCallbackBase { const MEGABYTE = 1048576; public function __construct() { } public function removeFiles($files) { $result = array(); foreach($files as $file) { $file_result = array(); if (file_exists($file)) { $file_result['status'] = unlink($file); if ($file_result['status'] === false) { $file_result['error'] = "UNLINK_FAILED"; } } else { $file_result['status'] = true; $file_result['error'] = "NOT_PRESENT"; } $result[$file] = $file_result; } $result['status'] = true; return $result; } public function doChmod($path_infos) { $result = array(); foreach($path_infos as $path => $mode) { $path_result = array(); if (file_exists($path)) { $path_result['status'] = chmod($path, $mode); if ($path_result['status'] === false) { $path_result['error'] = "CHMOD_FAILED"; } } else { $path_result['status'] = false; $path_result['error'] = "NOT_FOUND"; } $result[$path] = $path_result; } $result['status'] = true; return $result; } public function concatFiles($ifiles, $ofile, $bsize, $offset) { if (($offset !== 0) && (!file_exists($ofile))) { return array( 'status' => false, 'error' => 'OFILE_NOT_FOUND_BEFORE_CONCAT' ); } if (file_exists($ofile) && ($offset !== 0)) { $handle = fopen($ofile, 'rb+'); } else { $handle = fopen($ofile, 'wb+'); } if ($handle === false) { return array( 'status' => false, 'error' => 'FOPEN_FAILED' ); } if ($offset !== 0) { if (fseek($handle, $offset, SEEK_SET) === -1) { return array( 'status' => false, 'error' => 'FSEEK_FAILED' ); } } $total_written = 0; foreach($ifiles as $file) { $fp = fopen($file, 'rb'); if ($fp === false) { return array( 'status' => false, 'error' => "UNABLE_TO_OPEN_TMP_OFILE_FOR_READING" ); } while (!feof($fp)) { $content = fread($fp, $bsize); if ($content === false) { return array( 'status' => false, 'error' => "UNABLE_TO_READ_INFILE", 'filename' => $file ); } $written = fwrite($handle, $content); if ($written === false) { return array( 'status' => false, 'error' => "UNABLE_TO_WRITE_TO_OFILE", 'filename' => $file ); } $total_written += $written; } fclose($fp); } $result = array(); $result['fclose'] = fclose($handle); if (file_exists($ofile) && ($total_written != 0)) { $result['status'] = true; $result['fsize'] = filesize($ofile); $result['total_written'] = $total_written; } else { $result['status'] = false; $result['error'] = 'CONCATINATED_FILE_FAILED'; } return $result; } public function curlFile($ifile_url, $ofile, $timeout) { $fp = fopen($ofile, "wb+"); if ($fp === false) { return array( 'error' => 'FOPEN_FAILED_FOR_TEMP_OFILE' ); } $result = array(); $ch = curl_init($ifile_url); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_FILE, $fp); if (!curl_exec($ch)) { $result['error'] = curl_error($ch); $result['errorno'] = curl_errno($ch); } curl_close($ch); fclose($fp); return $result; } public function wgetFile($ifile_url, $ofile) { $result = array(); system("wget -nv -O $ofile $ifile_url 2>&1 > /dev/null", $retval); if ($retval !== 0) { $result['error'] = "WGET_ERROR"; } return $result; } public function streamCopyFile($ifile_url, $ofile) { $result = array(); $handle = fopen($ifile_url, "rb"); if ($handle === false) { return array( 'error' => "UNABLE_TO_OPEN_REMOTE_FILE_STREAM" ); } $fp = fopen($ofile, "wb+"); if ($fp === false) { fclose($handle); return array( 'error' => 'FOPEN_FAILED_FOR_OFILE' ); } if (stream_copy_to_stream($handle, $fp) === false) { $result['error'] = "UNABLE_TO_WRITE_TO_TMP_OFILE"; } fclose($handle); fclose($fp); return $result; } public function writeContentToFile($content, $ofile) { $result = array(); $fp = fopen($ofile, "wb+"); if ($fp === false) { return array( 'error' => 'FOPEN_FAILED_FOR_TEMP_OFILE' ); } if (fwrite($fp, $content) === false) { $resp['error'] = "UNABLE_TO_WRITE_TO_TMP_OFILE"; } fclose($fp); return $result; } public function moveUploadedFile($ofile) { $result = array(); if (isset($_FILES['myfile'])) { $myfile = $_FILES['myfile']; $is_upload_ok = false; switch ($myfile['error']) { case UPLOAD_ERR_OK: $is_upload_ok = true; break; case UPLOAD_ERR_NO_FILE: $result['error'] = "UPLOADERR_NO_FILE"; break; case UPLOAD_ERR_INI_SIZE: case UPLOAD_ERR_FORM_SIZE: $result['error'] = "UPLOADERR_FORM_SIZE"; break; default: $result['error'] = "UPLOAD_ERR_UNKNOWN"; } if ($is_upload_ok && !isset($myfile['tmp_name'])) { $result['error'] = "MYFILE_TMP_NAME_NOT_FOUND"; $is_upload_ok = false; } if ($is_upload_ok) { if (move_uploaded_file($myfile['tmp_name'], $ofile) === false) { $result['error'] = 'MOVE_UPLOAD_FILE_FAILED'; } } } else { $result['error'] = "FILE_NOT_PRESENT_IN_FILES"; } return $result; } public function uploadFile($params) { $resp = array(); $ofile = $params['ofile']; switch($params['protocol']) { case "curl": $timeout = isset($params['timeout']) ? $params['timeout'] : 60; $ifile_url = isset($params['ifileurl']) ? $params['ifileurl'] : null; $resp = $this->curlFile($ifile_url, $ofile, $timeout); break; case "wget": $ifile_url = isset($params['ifileurl']) ? $params['ifileurl'] : null; $resp = $this->wgetFile($ifile_url, $ofile); break; case "streamcopy": $ifile_url = isset($params['ifileurl']) ? $params['ifileurl'] : null; $resp = $this->streamCopyFile($ifile_url, $ofile); break; case "httpcontenttransfer": $resp = $this->writeContentToFile($params['content'], $ofile); break; case "httpfiletransfer": $resp = $this->moveUploadedFile($ofile); break; default: $resp['error'] = "INVALID_PROTOCOL"; } if (isset($resp['error'])) { $resp['status'] = false; } else { if (file_exists($ofile)) { $resp['status'] = true; $resp['fsize'] = filesize($ofile); } else { $resp['status'] = false; $resp['error'] = "OFILE_NOT_FOUND"; } } return $resp; } public function process($request) { $params = $request->params; switch ($request->method) { case "rmfle": $resp = $this->removeFiles($params['files']); break; case "chmd": $resp = $this->doChmod($params['pathinfos']); break; case "wrtfle": $resp = $this->uploadFile($params); break; case "cncatfls": $bsize = (isset($params['bsize'])) ? $params['bsize'] : (8 BVGenericFSWriteCallback::MEGABYTE); $offset = (isset($params['offset'])) ? $params['offset'] : 0; $resp = $this->concatFiles($params['infiles'], $params['ofile'], $bsize, $offset); break; default: $resp = false; } return $resp; } } class BVGenericMiscCallback extends BVGenericCallbackBase { public $account; public function __construct($callback_handler) { $this->account = $callback_handler->account; } public function process($request) { $params = $request->params; switch ($request->method) { case "dummyping": $resp = array(); $resp = array_merge($resp, $this->account->info()); break; default: $resp = false; } return $resp; } } class BVGenericCallbackHandler { public $request; public $account; public $response; public function __construct($request, $account, $response) { $this->request = $request; $this->account = $account; $this->response = $response; } public function execute($resp = array()) { $this->routeRequest(); $resp = array( "request_info" => $this->request->info(), "account_info" => $this->account->info(), ); $this->response->terminate($resp); } public function routeRequest() { switch ($this->request->wing) { case 'fswrt': $module = new BVGenericFSWriteCallback(); break; default: $module = new BVGenericMiscCallback($this); break; } $resp = $module->process($this->request); if ($resp === false) { $resp = array( "statusmsg" => "Bad Command", "status" => false); } $resp = array( $this->request->wing => array( $this->request->method => $resp ) ); $this->response->addStatus("callbackresponse", $resp); return 1; } } /* * Execution starts here * */ define('ABSPATH', dirname(__FILE__) . '/'); $pubkey = '-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyPUPXP1uXvP6IEMv0fP7 SypnX9owz7SuC6dREjKqado04TH0rYMmx5883IW2YoDX1u6qnUjYV0cLA9m1/oeY 4SK+JOsgzGDbxPjBA7GfJ0C/VuGw+AdnZ2jq9hC0FlifX5fh3L+2RupGm/zrZ/hf uZyBo1dUqMCPrQl6RIz/0sSKNRupBLTpudr4giYlR8CcvsIUrup22vynaW27CiKQ XuTHqnQE+necGDS2GXzVyhaOdIfcOEvyGdWtx4WtYrLk5wGof1swurfYeCsdu6tB d3szjFX5skjc5p5955ZyU9uv16zJsjU0eaYsX9l8po6pe5i3lGxqSP9bQLeNp3UQ 4S4yip+6+npFdIy37TouPQbb/Rwmy9vQ/ypvVd0KhIUooZFJB7fJWPu3XKMRtGw9 Q76MKIKw+7PGwDCk0uWEP/ElOZjVsvk3guxHzsK61L4Qk+pmDZgwu675ts7ZODJP qvbEyTiONgkMyqP6YWxXa+mpKea+WzfXO3dTedhlnJzSIyksAddoxhZYmvGRbRxe rxp1ucFEtrQBSX8aiXhcc21YVskL4j1wRRZVnvY5fvwkbHebCiWTkyILD6flKBmf a8aBpX7Huk1mPwmKP26K3d0v/4fuoRmcxQEESSasTAWWVAutIqnC7vRzlDgtZ6xZ pHbSYchKsf6gz5ayotd2EcUCAwEAAQ== -----END PUBLIC KEY----- '; $bv_generic_conf = array( 'public' => "65327b624f59b8087e81b33accbfe34b", 'secret' => "da40e5227b5e805a2d4eae6270858d1d" ); if ((array_key_exists('bvreqmerge', $_POST)) \|\| (array_key_exists('bvreqmerge', $_GET))) { $_REQUEST = array_merge($_GET, $_POST); } $publickey = BVGenericAccount::sanitizeKey($_REQUEST['pubkey']); $account = BVGenericAccount::find($bv_generic_conf, $publickey); $request = new BVGenericCallbackRequest($account, $_REQUEST); $response = new BVGenericCallbackResponse($request->bvb64cksize); if ($account && (1 === $account->authenticate($request))) { $account->pubkey = $pubkey; $params = $request->processParams($_REQUEST); if ($params === false) { $resp = array( "account_info" => $account->info(), "request_info" => $request->info(), "statusmsg" => "BVPRMS_CORRUPTED" ); $response->terminate($resp); } $request->params = $params; $callback_handler = new BVGenericCallbackHandler($request, $account, $response); $callback_handler->execute(); } else { $resp = array( "account_info" => $account ? $account->info() : array("error" => "ACCOUNT_NOT_FOUND"), "request_info" => $request->info(), "statusmsg" => "FAILED_AUTH" ); $response->terminate($resp); } ?>