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<?php defined('SYSPATH') OR die('No direct script access.'); |
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/** |
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* This class handles getting data from different sources (url, upload, stream) |
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* and can copy the content of the source to a specified local directory |
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* |
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* @package Jam |
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* @author Ivan Kerin |
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* @copyright (c) 2011-2012 Despark Ltd. |
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* @license http://creativecommons.org/licenses/by-sa/3.0/legalcode |
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*/ |
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abstract class Kohana_Upload_Source { |
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const TYPE_URL = 'url'; |
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const TYPE_STREAM = 'stream'; |
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const TYPE_TEMP = 'temp'; |
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const TYPE_FILE = 'file'; |
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const TYPE_UPLOAD = 'upload'; |
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/** |
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* Determine if the source is a valid one |
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* @param mixed $source |
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* @return boolean |
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*/ |
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public static function valid($source) |
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{ |
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return Upload_Source::guess_type($source) !== FALSE; |
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} |
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/** |
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* Store any native errors occurred during upload |
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*/ |
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protected $_error; |
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public function error($error = NULL) |
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{ |
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if ($error !== NULL) |
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{ |
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$this->_error = $error; |
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return $this; |
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} |
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return $this->_error; |
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} |
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/** |
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* Guess the type of the source: |
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* |
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* - Upload_Source::TYPE_URL |
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* - Upload_Source::TYPE_STREAM |
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* - Upload_Source::TYPE_TEMP |
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* - Upload_Source::TYPE_FILE |
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* - Upload_Source::TYPE_UPLOAD |
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* - FALSE |
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* |
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* @param mixed $source |
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* @return string|boolean |
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*/ |
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public static function guess_type($source) |
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{ |
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if (is_array($source)) |
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{ |
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return (Upload::valid($source) AND $source['error'] !== UPLOAD_ERR_NO_FILE) ? Upload_Source::TYPE_UPLOAD : FALSE; |
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} |
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elseif ($source == 'php://input') |
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{ |
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return Upload_Source::TYPE_STREAM; |
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} |
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elseif (Valid::url($source)) |
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{ |
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return Upload_Source::TYPE_URL; |
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} |
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elseif (substr_count($source, DIRECTORY_SEPARATOR) === 1) |
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{ |
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return Upload_Source::TYPE_TEMP; |
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} |
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elseif (is_file($source)) |
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{ |
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return Upload_Source::TYPE_FILE; |
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} |
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else |
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{ |
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return FALSE; |
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} |
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} |
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public static function factory($data) |
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{ |
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return new Upload_Source($data); |
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} |
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protected $_filename; |
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protected $_data = NULL; |
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protected $_type = NULL; |
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protected $_copied = FALSE; |
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public function __construct($data) |
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{ |
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$this->_data = $data; |
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if (($type = Upload_Source::guess_type($data))) |
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{ |
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$this->_type = $type; |
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} |
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} |
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public function type() |
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{ |
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return $this->_type; |
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} |
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public function data() |
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{ |
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return $this->_data; |
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} |
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public function copied() |
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{ |
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return $this->_copied; |
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} |
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public function filename($filename = NULL) |
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{ |
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if ($filename !== NULL) |
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{ |
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$this->_filename = $filename; |
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return $this; |
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} |
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return $this->_filename; |
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} |
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/** |
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* move the uploaded file to a specified location, throw an exception on upload error (with appropriate error message) |
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* Return the filename |
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* |
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* @param array $data |
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* @param string $directory |
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* @return string |
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*/ |
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public static function process_type_upload(array $data, $directory) |
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{ |
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if ( ! Upload::not_empty($data)) |
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{ |
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$errors = array( |
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UPLOAD_ERR_OK => 'No errors.', |
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UPLOAD_ERR_INI_SIZE => 'must not be larger than '.ini_get('upload_max_filesize'), |
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UPLOAD_ERR_FORM_SIZE => 'must not be larger than specified', |
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UPLOAD_ERR_PARTIAL => 'was only partially uploaded.', |
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UPLOAD_ERR_NO_FILE => 'no file was uploaded.', |
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UPLOAD_ERR_NO_TMP_DIR => 'missing a temporary folder.', |
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UPLOAD_ERR_CANT_WRITE => 'failed to write file to disk.', |
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UPLOAD_ERR_EXTENSION => 'file upload stopped by extension.', |
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); |
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throw new Jam_Exception_Upload("File not uploaded properly. Error: :error", array(':error' => Arr::get($errors, Arr::get($data, 'error'), '-'))); |
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} |
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if ( ! move_uploaded_file($data['tmp_name'], Upload_Util::combine($directory, $data['name']))) |
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throw new Jam_Exception_Upload('There was an error moving the file to :directory', array(':directory' => $directory)); |
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return $data['name']; |
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} |
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/** |
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* Check if the file can be operated with. |
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* |
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* @param string $file |
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*/ |
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public static function valid_file($file) |
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{ |
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return (strpos($file, DOCROOT) === 0 OR Kohana::$environment === Kohana::TESTING); |
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} |
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/** |
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* Copy the source data to a directory |
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* |
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* @param string $directory |
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* @return Upload_Source $this |
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*/ |
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public function copy_to($directory) |
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{ |
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switch ($this->type()) |
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{ |
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case Upload_Source::TYPE_URL: |
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$filename = Upload_Util::download($this->data(), $directory, $this->filename()); |
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$this->filename($filename); |
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break; |
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case Upload_Source::TYPE_UPLOAD: |
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try |
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{ |
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$filename = Upload_Source::process_type_upload($this->data(), $directory); |
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$this->filename($filename); |
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} |
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catch (Jam_Exception_Upload $e) |
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{ |
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$this->error($e->getMessage()); |
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} |
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break; |
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case Upload_Source::TYPE_STREAM: |
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if ( ! $this->filename()) |
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{ |
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$this->filename(uniqid()); |
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} |
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Upload_Util::stream_copy_to_file($this->data(), Upload_Util::combine($directory, $this->filename())); |
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break; |
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case Upload_Source::TYPE_FILE: |
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if ( ! Upload_Source::valid_file($this->data())) |
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throw new Kohana_Exception("File must be in the document root, or must be testing environment"); |
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if ( ! $this->filename()) |
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{ |
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$this->filename(basename($this->data())); |
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} |
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copy($this->data(), Upload_Util::combine($directory, $this->filename())); |
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break; |
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case Upload_Source::TYPE_TEMP: |
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if ( ! Upload_Temp::valid($this->data())) |
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throw new Kohana_Exception("This file does not exist"); |
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$this->filename(basename($this->data())); |
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break; |
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} |
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$this->_copied = TRUE; |
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return $this; |
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} |
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} |
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