138 lines
3.2 KiB
PHP
138 lines
3.2 KiB
PHP
<?php
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class TransferHelper
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{
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protected static $mocks = [];
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public static function download($srcUrl, $dstPath, $maxBytes = null)
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{
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if (isset(self::$mocks[$srcUrl]))
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{
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self::copy(self::$mocks[$srcUrl], $dstPath);
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chmod($dstPath, 0644);
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return;
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}
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set_time_limit(0);
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$srcHandle = fopen($srcUrl, 'rb');
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if (!$srcHandle)
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throw new SimpleException('Cannot open URL for reading');
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$dstHandle = fopen($dstPath, 'w+b');
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if (!$dstHandle)
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{
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fclose($srcHandle);
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throw new SimpleException('Cannot open file for writing');
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}
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try
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{
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while (!feof($srcHandle))
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{
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$buffer = fread($srcHandle, 4 * 1024);
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if (fwrite($dstHandle, $buffer) === false)
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throw new SimpleException('Cannot write into file');
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fflush($dstHandle);
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if ($maxBytes !== null and ftell($dstHandle) > $maxBytes)
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{
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fclose($srcHandle);
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fclose($dstHandle);
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throw new SimpleException(
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'File is too big (maximum size: %s)',
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TextHelper::useBytesUnits($maxBytes));
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}
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}
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}
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finally
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{
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fclose($srcHandle);
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fclose($dstHandle);
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chmod($dstPath, 0644);
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}
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}
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public static function mockForDownload($url, $sourceFile)
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{
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self::$mocks[$url] = $sourceFile;
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}
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public static function moveUpload($srcPath, $dstPath)
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{
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if ($srcPath == $dstPath)
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throw new SimpleException('Trying to move file to the same location');
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if (is_uploaded_file($srcPath))
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{
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move_uploaded_file($srcPath, $dstPath);
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}
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else
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{
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//problems with permissions on some systems?
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#rename($srcPath, $dstPath);
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self::copy($srcPath, $dstPath);
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self::remove($srcPath);
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}
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}
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public static function copy($srcPath, $dstPath)
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{
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if ($srcPath == $dstPath)
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throw new SimpleException('Trying to copy file to the same location');
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copy($srcPath, $dstPath);
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}
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public static function remove($srcPath)
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{
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if (file_exists($srcPath))
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unlink($srcPath);
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}
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public static function createDirectory($dirPath)
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{
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if (file_exists($dirPath))
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{
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if (!is_dir($dirPath))
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throw new SimpleException($dirPath . ' exists, but it\'s not a directory');
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return;
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}
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mkdir($dirPath, 0777, true);
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}
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public static function handleUploadErrors($file)
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{
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switch ($file['error'])
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{
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case UPLOAD_ERR_OK:
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break;
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case UPLOAD_ERR_INI_SIZE:
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throw new SimpleException('File is too big (maximum size: %s)', ini_get('upload_max_filesize'));
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case UPLOAD_ERR_FORM_SIZE:
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throw new SimpleException('File is too big than it was allowed in HTML form');
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case UPLOAD_ERR_PARTIAL:
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throw new SimpleException('File transfer was interrupted');
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case UPLOAD_ERR_NO_FILE:
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throw new SimpleException('No file was uploaded');
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case UPLOAD_ERR_NO_TMP_DIR:
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throw new SimpleException('Server misconfiguration error: missing temporary folder');
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case UPLOAD_ERR_CANT_WRITE:
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throw new SimpleException('Server misconfiguration error: cannot write to disk');
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case UPLOAD_ERR_EXTENSION:
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throw new SimpleException('Server misconfiguration error: upload was canceled by an extension');
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default:
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throw new SimpleException('Generic file upload error (id: ' . $file['error'] . ')');
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}
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if (!is_uploaded_file($file['tmp_name']))
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throw new SimpleException('Generic file upload error');
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}
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}
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