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<?php |
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|
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namespace WebPConvertCloudService; |
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|
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use \WebPConvertCloudService\WebPConvertCloudService; |
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use \WebPConvert\WebPConvert; |
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|
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class Serve |
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{ |
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|
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private static function configurationError($msg) |
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{ |
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WebPConvertCloudService::exitWithError(WebPConvertCloudService::ERROR_CONFIGURATION, $msg); |
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} |
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|
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private static function accessDenied($msg) |
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{ |
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WebPConvertCloudService::exitWithError(WebPConvertCloudService::ERROR_ACCESS_DENIED, $msg); |
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} |
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|
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private static function runtimeError($msg) |
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{ |
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WebPConvertCloudService::exitWithError(WebPConvertCloudService::ERROR_RUNTIME, $msg); |
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} |
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|
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public static function serve($options) |
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{ |
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$uploaddir = $options['destination-dir'] ; |
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|
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if (!is_dir($uploaddir)) { |
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if (!@mkdir($uploaddir, 0775, true)) { |
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self::configurationError('Could not create folder for converted files: ' . $uploaddir); |
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} |
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@chmod($uploaddir, 0775); |
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} |
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|
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/* |
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if (!isset($_POST['hash'])) { |
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self::accessDenied('Restricted access. Hash required, but missing'); |
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}*/ |
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|
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if (!isset($_FILES['file'])) { |
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self::runtimeError('No file was supplied'); |
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} |
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if (!isset($_FILES['file']['error'])) { |
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self::runtimeError('Invalid parameters'); |
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} |
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|
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if (is_array($_FILES['file']['error'])) { |
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self::runtimeError('Cannot convert multiple files'); |
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} |
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|
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switch ($_FILES['file']['error']) { |
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case UPLOAD_ERR_OK: |
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break; |
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case UPLOAD_ERR_NO_FILE: |
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self::runtimeError('No file sent'); |
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break; |
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case UPLOAD_ERR_INI_SIZE: |
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case UPLOAD_ERR_FORM_SIZE: |
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self::runtimeError('Exceeded filesize limit.'); |
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break; |
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default: |
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self::runtimeError('Unknown error.'); |
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} |
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|
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if ($_FILES['file']['size'] == 0) { |
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self::accessDenied('File size is zero. Perhaps exceeded filesize limit?'); |
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} |
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// Undefined | Multiple Files | $_FILES Corruption Attack |
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// If this request falls under any of them, treat it invalid. |
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/*if ($_FILES['file']['size'] > 1000000) { |
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throw new RuntimeException('Exceeded filesize limit.'); |
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}*/ |
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|
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// DO NOT TRUST $_FILES['upfile']['mime'] VALUE !! |
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// Check MIME Type by yourself. |
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if (function_exists('finfo_file') && (defined('FILEINFO_MIME_TYPE'))) { |
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$r = finfo_open(FILEINFO_MIME_TYPE); |
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if (false === $ext = array_search( |
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finfo_file($r, $_FILES['file']['tmp_name']), |
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array( |
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'jpg' => 'image/jpeg', |
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'png' => 'image/png', |
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'gif' => 'image/gif', |
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), |
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true |
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)) { |
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self::accessDenied('Invalid file format.'); |
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} |
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} else { |
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$ext = 'jpg'; // We set it to something, in case above fails. |
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} |
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|
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$uploadfile = $uploaddir . '/' . sha1_file($_FILES['file']['tmp_name']) . '.' . $ext; |
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//echo $uploadfile; |
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if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile)) { |
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// File is valid, and was successfully uploaded |
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|
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$source = $uploadfile; |
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|
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/* |
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if (!empty($password)) { |
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$hash = md5(md5_file($source) . $password); |
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|
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if ($hash != $_POST['hash']) { |
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self::accessDenied('Wrong password.'); |
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} |
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} |
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*/ |
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$destination = $uploadfile . '.webp'; |
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|
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if (isset($_POST['options'])) { |
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// Merge in options in $_POST, overwriting the webp-convert options in config |
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$convertOptionsInPost = (array) json_decode($_POST['options'], true); |
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$convertOptions = array_merge($options['webp-convert'], $convertOptionsInPost); |
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} else { |
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$convertOptions = $options['webp-convert']; |
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} |
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|
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try { |
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WebPConvert::convert($source, $destination, $convertOptions); |
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header('Content-type: application/octet-stream'); |
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echo file_get_contents($destination); |
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|
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unlink($source); |
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unlink($destination); |
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} catch (\Exception $e) { |
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echo 'Conversion failed!'; |
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echo $e->getMessage(); |
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} |
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} else { |
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// Possible file upload attack! |
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self::configurationError('Failed to move uploaded file'); |
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|
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//echo 'Failed to move uploaded file'; |
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} |
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} |
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} |
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|
