/184.168.182.1/wp-content/plugins/updraftplus/class-zip.php
PHP | 306 lines | 219 code | 66 blank | 21 comment | 73 complexity | f80dcd593b24929944c2f98151eb9cfc MD5 | raw file
- <?php
- if (!defined ('ABSPATH')) die('No direct access allowed');
- if (class_exists('ZipArchive')):
- # We just add a last_error variable for comaptibility with our UpdraftPlus_PclZip object
- class UpdraftPlus_ZipArchive extends ZipArchive {
- public $last_error = 'Unknown: ZipArchive does not return error messages';
- }
- endif;
- class UpdraftPlus_BinZip extends UpdraftPlus_PclZip {
- private $binzip;
- function __construct() {
- global $updraftplus_backup;
- $this->binzip = $updraftplus_backup->binzip;
- if (!is_string($this->binzip)) {
- $this->last_error = "No binary zip was found";
- return false;
- }
- return parent::__construct();
- }
- public function addFile($file, $add_as) {
- global $updraftplus;
- # Get the directory that $add_as is relative to
- $base = $updraftplus->str_lreplace($add_as, '', $file);
- if ($file == $base) {
- // Shouldn't happen
- } else {
- $rdirname = untrailingslashit($base);
- # Note: $file equals $rdirname/$add_as
- $this->addfiles[$rdirname][] = $add_as;
- }
- }
- # The standard zip binary cannot list; so we use PclZip for that
- # Do the actual write-out - it is assumed that close() is where this is done. Needs to return true/false
- public function close() {
- if (empty($this->pclzip)) {
- $this->last_error = 'Zip file was not opened';
- return false;
- }
- global $updraftplus, $updraftplus_backup;
- $updraft_dir = $updraftplus->backups_dir_location();
- $activity = false;
- # BinZip does not like zero-sized zip files
- if (file_exists($this->path) && 0 == filesize($this->path)) @unlink($this->path);
- $descriptorspec = array(
- 0 => array('pipe', 'r'),
- 1 => array('pipe', 'w'),
- 2 => array('pipe', 'w')
- );
- $exec = $this->binzip." -v -@ ".escapeshellarg($this->path);
- $last_recorded_alive = time();
- $something_useful_happened = $updraftplus->something_useful_happened;
- $orig_size = file_exists($this->path) ? filesize($this->path) : 0;
- $last_size = $orig_size;
- clearstatcache();
- $added_dirs_yet = false;
- # If there are no files to add, but there are empty directories, then we need to make sure the directories actually get added
- if (0 == count($this->addfiles) && 0 < count($this->adddirs)) {
- $dir = realpath($updraftplus_backup->make_zipfile_source);
- $this->addfiles[$dir] = '././.';
- }
- // Loop over each destination directory name
- foreach ($this->addfiles as $rdirname => $files) {
- $process = proc_open($exec, $descriptorspec, $pipes, $rdirname);
- if (!is_resource($process)) {
- $updraftplus->log('BinZip error: proc_open failed');
- $this->last_error = 'BinZip error: proc_open failed';
- return false;
- }
- if (!$added_dirs_yet) {
- # Add the directories - (in fact, with binzip, non-empty directories automatically have their entries added; but it doesn't hurt to add them explicitly)
- foreach ($this->adddirs as $dir) {
- fwrite($pipes[0], $dir."/\n");
- }
- $added_dirs_yet=true;
- }
- $read = array($pipes[1], $pipes[2]);
- $except = null;
- if (!is_array($files) || 0 == count($files)) {
- fclose($pipes[0]);
- $write = array();
- } else {
- $write = array($pipes[0]);
- }
- while ((!feof($pipes[1]) || !feof($pipes[2]) || (is_array($files) && count($files)>0)) && false !== ($changes = @stream_select($read, $write, $except, 0, 200000))) {
- if (is_array($write) && in_array($pipes[0], $write) && is_array($files) && count($files)>0) {
- $file = array_pop($files);
- // Send the list of files on stdin
- fwrite($pipes[0], $file."\n");
- if (0 == count($files)) fclose($pipes[0]);
- }
- if (is_array($read) && in_array($pipes[1], $read)) {
- $w = fgets($pipes[1]);
- // Logging all this really slows things down; use debug to mitigate
- if ($w && $updraftplus_backup->debug) $updraftplus->log("Output from zip: ".trim($w), 'debug');
- if (time() > $last_recorded_alive + 5) {
- $updraftplus->record_still_alive();
- $last_recorded_alive = time();
- }
- if (file_exists($this->path)) {
- $new_size = @filesize($this->path);
- if (!$something_useful_happened && $new_size > $orig_size + 20) {
- $updraftplus->something_useful_happened();
- $something_useful_happened = true;
- }
- clearstatcache();
- # Log when 20% bigger or at least every 50Mb
- if ($new_size > $last_size*1.2 || $new_size > $last_size + 52428800) {
- $updraftplus->log(basename($this->path).sprintf(": size is now: %.2f Mb", round($new_size/1048576,1)));
- $last_size = $new_size;
- }
- }
- }
- if (is_array($read) && in_array($pipes[2], $read)) {
- $last_error = fgets($pipes[2]);
- if (!empty($last_error)) $this->last_error = rtrim($last_error);
- }
- // Re-set
- $read = array($pipes[1], $pipes[2]);
- $write = (is_array($files) && count($files) >0) ? array($pipes[0]) : array();
- $except = null;
- }
- fclose($pipes[1]);
- fclose($pipes[2]);
- $ret = proc_close($process);
- if ($ret != 0 && $ret != 12) {
- $updraftplus->log("Binary zip: error (code: $ret - look it up in the Diagnostics section at http://www.info-zip.org/mans/zip.html for interpretation... and also check that your hosting account quota is not full)");
- if (!empty($w) && !$updraftplus_backup->debug) $updraftplus->log("Last output from zip: ".trim($w), 'debug');
- return false;
- }
- unset($this->addfiles[$rdirname]);
- }
- return true;
- }
- }
- # A ZipArchive compatibility layer, with behaviour sufficient for our usage of ZipArchive
- class UpdraftPlus_PclZip {
- protected $pclzip;
- protected $path;
- protected $addfiles;
- protected $adddirs;
- private $statindex;
- public $last_error;
- function __construct() {
- $this->addfiles = array();
- $this->adddirs = array();
- }
- public function __get($name) {
- if ($name != 'numFiles') return null;
- if (empty($this->pclzip)) return false;
- $statindex = $this->pclzip->listContent();
- if (empty($statindex)) {
- $this->statindex=array();
- return 0;
- }
- $result = array();
- foreach ($statindex as $i => $file) {
- if (!isset($statindex[$i]['folder']) || 0 == $statindex[$i]['folder']) {
- $result[] = $file;
- }
- unset($statindex[$i]);
- }
- $this->statindex=$result;
- return count($this->statindex);
- }
- public function statIndex($i) {
- if (empty($this->statindex[$i])) return array('name' => null, 'size' => 0);
- return array('name' => $this->statindex[$i]['filename'], 'size' => $this->statindex[$i]['size']);
- }
- public function open($path, $flags = 0) {
- if(!class_exists('PclZip')) include_once(ABSPATH.'/wp-admin/includes/class-pclzip.php');
- if(!class_exists('PclZip')) {
- $this->last_error = "No PclZip class was found";
- return false;
- }
- $ziparchive_create_match = (defined('ZIPARCHIVE::CREATE')) ? ZIPARCHIVE::CREATE : 1;
- if ($flags == $ziparchive_create_match && file_exists($path)) @unlink($path);
- $this->pclzip = new PclZip($path);
- if (empty($this->pclzip)) {
- $this->last_error = 'Could not get a PclZip object';
- return false;
- }
- # Make the empty directory we need to implement addEmptyDir()
- global $updraftplus;
- $updraft_dir = $updraftplus->backups_dir_location();
- if (!is_dir($updraft_dir.'/emptydir') && !mkdir($updraft_dir.'/emptydir')) {
- $this->last_error = "Could not create empty directory ($updraft_dir/emptydir)";
- return false;
- }
- $this->path = $path;
- return true;
- }
- # Do the actual write-out - it is assumed that close() is where this is done. Needs to return true/false
- public function close() {
- if (empty($this->pclzip)) {
- $this->last_error = 'Zip file was not opened';
- return false;
- }
- global $updraftplus;
- $updraft_dir = $updraftplus->backups_dir_location();
- $activity = false;
- # Add the empty directories
- foreach ($this->adddirs as $dir) {
- if (false == $this->pclzip->add($updraft_dir.'/emptydir', PCLZIP_OPT_REMOVE_PATH, $updraft_dir.'/emptydir', PCLZIP_OPT_ADD_PATH, $dir)) {
- $this->last_error = $this->pclzip->errorInfo(true);
- return false;
- }
- $activity = true;
- }
- foreach ($this->addfiles as $rdirname => $adirnames) {
- foreach ($adirnames as $adirname => $files) {
- if (false == $this->pclzip->add($files, PCLZIP_OPT_REMOVE_PATH, $rdirname, PCLZIP_OPT_ADD_PATH, $adirname)) {
- $this->last_error = $this->pclzip->errorInfo(true);
- return false;
- }
- $activity = true;
- }
- unset($this->addfiles[$rdirname]);
- }
- $this->pclzip = false;
- $this->addfiles = array();
- $this->adddirs = array();
- clearstatcache();
- if ($activity && filesize($this->path) < 50) {
- $this->last_error = "Write failed - unknown cause (check your file permissions)";
- return false;
- }
- return true;
- }
- # Note: basename($add_as) is irrelevant; that is, it is actually basename($file) that will be used. But these are always identical in our usage.
- public function addFile($file, $add_as) {
- # Add the files. PclZip appears to do the whole (copy zip to temporary file, add file, move file) cycle for each file - so batch them as much as possible. We have to batch by dirname(). On a test with 1000 files of 25Kb each in the same directory, this reduced the time needed on that directory from 120s to 15s (or 5s with primed caches).
- $rdirname = dirname($file);
- $adirname = dirname($add_as);
- $this->addfiles[$rdirname][$adirname][] = $file;
- }
- # PclZip doesn't have a direct way to do this
- public function addEmptyDir($dir) {
- $this->adddirs[] = $dir;
- }
- }