| 1 |
<?php |
| 2 |
|
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if (!defined ('ABSPATH')) die('No direct access allowed'); |
| 4 |
|
| 5 |
if (class_exists('ZipArchive')): |
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# We just add a last_error variable for comaptibility with our UpdraftPlus_PclZip object |
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class UpdraftPlus_ZipArchive extends ZipArchive { |
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public $last_error = 'Unknown: ZipArchive does not return error messages'; |
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} |
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endif; |
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|
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class UpdraftPlus_BinZip extends UpdraftPlus_PclZip { |
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|
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private $binzip; |
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|
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function __construct() { |
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global $updraftplus_backup; |
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$this->binzip = $updraftplus_backup->binzip; |
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if (!is_string($this->binzip)) { |
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$this->last_error = "No binary zip was found"; |
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return false; |
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} |
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return parent::__construct(); |
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} |
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|
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public function addFile($file, $add_as) { |
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|
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global $updraftplus; |
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# Get the directory that $add_as is relative to |
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$base = $updraftplus->str_lreplace($add_as, '', $file); |
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|
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if ($file == $base) { |
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// Shouldn't happen |
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} else { |
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$rdirname = untrailingslashit($base); |
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# Note: $file equals $rdirname/$add_as |
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$this->addfiles[$rdirname][] = $add_as; |
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} |
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|
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} |
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|
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# The standard zip binary cannot list; so we use PclZip for that |
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# Do the actual write-out - it is assumed that close() is where this is done. Needs to return true/false |
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public function close() { |
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|
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if (empty($this->pclzip)) { |
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$this->last_error = 'Zip file was not opened'; |
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return false; |
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} |
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|
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global $updraftplus, $updraftplus_backup; |
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$updraft_dir = $updraftplus->backups_dir_location(); |
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|
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$activity = false; |
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|
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# BinZip does not like zero-sized zip files |
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if (file_exists($this->path) && 0 == filesize($this->path)) @unlink($this->path); |
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|
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$descriptorspec = array( |
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0 => array('pipe', 'r'), |
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1 => array('pipe', 'w'), |
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2 => array('pipe', 'w') |
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); |
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$exec = $this->binzip." -v -@ ".escapeshellarg($this->path); |
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$last_recorded_alive = time(); |
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$something_useful_happened = $updraftplus->something_useful_happened; |
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$orig_size = file_exists($this->path) ? filesize($this->path) : 0; |
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$last_size = $orig_size; |
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clearstatcache(); |
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|
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$added_dirs_yet = false; |
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|
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# If there are no files to add, but there are empty directories, then we need to make sure the directories actually get added |
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if (0 == count($this->addfiles) && 0 < count($this->adddirs)) { |
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$dir = realpath($updraftplus_backup->make_zipfile_source); |
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$this->addfiles[$dir] = '././.'; |
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} |
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|
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// Loop over each destination directory name |
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foreach ($this->addfiles as $rdirname => $files) { |
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|
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$process = proc_open($exec, $descriptorspec, $pipes, $rdirname); |
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|
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if (!is_resource($process)) { |
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$updraftplus->log('BinZip error: proc_open failed'); |
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$this->last_error = 'BinZip error: proc_open failed'; |
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return false; |
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} |
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|
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if (!$added_dirs_yet) { |
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# Add the directories - (in fact, with binzip, non-empty directories automatically have their entries added; but it doesn't hurt to add them explicitly) |
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foreach ($this->adddirs as $dir) { |
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fwrite($pipes[0], $dir."/\n"); |
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} |
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$added_dirs_yet=true; |
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} |
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|
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$read = array($pipes[1], $pipes[2]); |
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$except = null; |
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|
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if (!is_array($files) || 0 == count($files)) { |
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fclose($pipes[0]); |
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$write = array(); |
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} else { |
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$write = array($pipes[0]); |
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} |
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|
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while ((!feof($pipes[1]) || !feof($pipes[2]) || (is_array($files) && count($files)>0)) && false !== ($changes = @stream_select($read, $write, $except, 0, 200000))) { |
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|
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if (is_array($write) && in_array($pipes[0], $write) && is_array($files) && count($files)>0) { |
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$file = array_pop($files); |
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// Send the list of files on stdin |
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fwrite($pipes[0], $file."\n"); |
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if (0 == count($files)) fclose($pipes[0]); |
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} |
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|
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if (is_array($read) && in_array($pipes[1], $read)) { |
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$w = fgets($pipes[1]); |
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// Logging all this really slows things down; use debug to mitigate |
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if ($w && $updraftplus_backup->debug) $updraftplus->log("Output from zip: ".trim($w), 'debug'); |
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if (time() > $last_recorded_alive + 5) { |
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$updraftplus->record_still_alive(); |
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$last_recorded_alive = time(); |
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} |
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if (file_exists($this->path)) { |
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$new_size = @filesize($this->path); |
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if (!$something_useful_happened && $new_size > $orig_size + 20) { |
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$updraftplus->something_useful_happened(); |
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$something_useful_happened = true; |
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} |
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clearstatcache(); |
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# Log when 20% bigger or at least every 50Mb |
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if ($new_size > $last_size*1.2 || $new_size > $last_size + 52428800) { |
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$updraftplus->log(basename($this->path).sprintf(": size is now: %.2f Mb", round($new_size/1048576,1))); |
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$last_size = $new_size; |
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} |
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} |
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} |
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|
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if (is_array($read) && in_array($pipes[2], $read)) { |
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$last_error = fgets($pipes[2]); |
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if (!empty($last_error)) $this->last_error = rtrim($last_error); |
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} |
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|
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// Re-set |
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$read = array($pipes[1], $pipes[2]); |
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$write = (is_array($files) && count($files) >0) ? array($pipes[0]) : array(); |
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$except = null; |
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|
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} |
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|
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fclose($pipes[1]); |
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fclose($pipes[2]); |
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|
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$ret = proc_close($process); |
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|
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if ($ret != 0 && $ret != 12) { |
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$updraftplus->log("Binary zip: error (code: $ret - look it up in the Diagnostics section at http://www.info-zip.org/mans/zip.html for interpretation... and also check that your hosting account quota is not full)"); |
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if (!empty($w) && !$updraftplus_backup->debug) $updraftplus->log("Last output from zip: ".trim($w), 'debug'); |
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return false; |
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} |
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|
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unset($this->addfiles[$rdirname]); |
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} |
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|
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return true; |
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} |
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|
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} |
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|
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# A ZipArchive compatibility layer, with behaviour sufficient for our usage of ZipArchive |
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class UpdraftPlus_PclZip { |
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|
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protected $pclzip; |
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protected $path; |
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protected $addfiles; |
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protected $adddirs; |
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private $statindex; |
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public $last_error; |
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|
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function __construct() { |
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$this->addfiles = array(); |
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$this->adddirs = array(); |
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} |
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|
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public function __get($name) { |
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if ($name != 'numFiles') return null; |
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|
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if (empty($this->pclzip)) return false; |
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|
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$statindex = $this->pclzip->listContent(); |
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|
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if (empty($statindex)) { |
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$this->statindex=array(); |
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return 0; |
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} |
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|
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$result = array(); |
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foreach ($statindex as $i => $file) { |
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if (!isset($statindex[$i]['folder']) || 0 == $statindex[$i]['folder']) { |
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$result[] = $file; |
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} |
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unset($statindex[$i]); |
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} |
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|
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$this->statindex=$result; |
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|
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return count($this->statindex); |
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|
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} |
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|
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public function statIndex($i) { |
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if (empty($this->statindex[$i])) return array('name' => null, 'size' => 0); |
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return array('name' => $this->statindex[$i]['filename'], 'size' => $this->statindex[$i]['size']); |
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} |
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|
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public function open($path, $flags = 0) { |
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if(!class_exists('PclZip')) include_once(ABSPATH.'/wp-admin/includes/class-pclzip.php'); |
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if(!class_exists('PclZip')) { |
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$this->last_error = "No PclZip class was found"; |
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return false; |
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} |
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|
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$ziparchive_create_match = (defined('ZIPARCHIVE::CREATE')) ? ZIPARCHIVE::CREATE : 1; |
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|
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if ($flags == $ziparchive_create_match && file_exists($path)) @unlink($path); |
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|
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$this->pclzip = new PclZip($path); |
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if (empty($this->pclzip)) { |
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$this->last_error = 'Could not get a PclZip object'; |
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return false; |
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} |
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|
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# Make the empty directory we need to implement addEmptyDir() |
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global $updraftplus; |
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$updraft_dir = $updraftplus->backups_dir_location(); |
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if (!is_dir($updraft_dir.'/emptydir') && !mkdir($updraft_dir.'/emptydir')) { |
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$this->last_error = "Could not create empty directory ($updraft_dir/emptydir)"; |
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return false; |
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} |
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|
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$this->path = $path; |
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|
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return true; |
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|
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} |
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|
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# Do the actual write-out - it is assumed that close() is where this is done. Needs to return true/false |
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public function close() { |
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if (empty($this->pclzip)) { |
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$this->last_error = 'Zip file was not opened'; |
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return false; |
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} |
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|
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global $updraftplus; |
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$updraft_dir = $updraftplus->backups_dir_location(); |
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|
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$activity = false; |
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|
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# Add the empty directories |
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foreach ($this->adddirs as $dir) { |
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if (false == $this->pclzip->add($updraft_dir.'/emptydir', PCLZIP_OPT_REMOVE_PATH, $updraft_dir.'/emptydir', PCLZIP_OPT_ADD_PATH, $dir)) { |
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$this->last_error = $this->pclzip->errorInfo(true); |
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return false; |
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} |
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$activity = true; |
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} |
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|
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foreach ($this->addfiles as $rdirname => $adirnames) { |
| 270 |
foreach ($adirnames as $adirname => $files) { |
| 271 |
if (false == $this->pclzip->add($files, PCLZIP_OPT_REMOVE_PATH, $rdirname, PCLZIP_OPT_ADD_PATH, $adirname)) { |
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$this->last_error = $this->pclzip->errorInfo(true); |
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return false; |
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} |
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$activity = true; |
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} |
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unset($this->addfiles[$rdirname]); |
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} |
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|
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$this->pclzip = false; |
| 281 |
$this->addfiles = array(); |
| 282 |
$this->adddirs = array(); |
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|
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clearstatcache(); |
| 285 |
if ($activity && filesize($this->path) < 50) { |
| 286 |
$this->last_error = "Write failed - unknown cause (check your file permissions)"; |
| 287 |
return false; |
| 288 |
} |
| 289 |
|
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return true; |
| 291 |
} |
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|
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# Note: basename($add_as) is irrelevant; that is, it is actually basename($file) that will be used. But these are always identical in our usage. |
| 294 |
public function addFile($file, $add_as) { |
| 295 |
# 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). |
| 296 |
$rdirname = dirname($file); |
| 297 |
$adirname = dirname($add_as); |
| 298 |
$this->addfiles[$rdirname][$adirname][] = $file; |
| 299 |
} |
| 300 |
|
| 301 |
# PclZip doesn't have a direct way to do this |
| 302 |
public function addEmptyDir($dir) { |
| 303 |
$this->adddirs[] = $dir; |
| 304 |
} |
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|
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} |
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|
