DownloadMessage::downloadMessageAsZipFile()

Complexity

Conditions	6
Paths	7

Size

Total Lines	67
Code Lines	35

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
	public function downloadMessageAsZipFile() {
		if (!$this->store) {
			return;
		}
		// Generate random ZIP file name at default temporary path of PHP
		$randomZipName = tempnam(sys_get_temp_dir(), 'zip');

		// Create an open zip archive.
		$zip = new ZipArchive();
		$result = $zip->open($randomZipName, ZipArchive::CREATE);

		if ($result === true) {
			for ($index = 0, $count = count($this->entryIds); $index < $count; ++$index) {
				$this->message = mapi_msgstore_openentry($this->store, hex2bin((string) $this->entryIds[$index]));

				// get message properties.
				$messageProps = mapi_getprops($this->message, [PR_SUBJECT, PR_MESSAGE_CLASS]);

				$stream = $this->getEmlStream($messageProps);
				$stat = mapi_stream_stat($stream);

				// Get the stream
				$datastring = '';
				for ($i = 0; $i < $stat['cb']; $i += BLOCK_SIZE) {
					$datastring .= mapi_stream_read($stream, BLOCK_SIZE);
					// Need to discard the buffer contents to prevent memory
					// exhaustion.
					ob_flush();
				}

				$filename = (!empty($messageProps[PR_SUBJECT])) ? $messageProps[PR_SUBJECT] : _('Untitled');
				$filename .= '.eml';

				$filename = $this->handleDuplicateFileNames($filename);
				// Remove slashes to prevent unwanted directories to be created in the zip file.
				$filename = str_replace('\\', '_', $filename);
				$filename = str_replace('/', '_', $filename);

				// Add file into zip by stream
				$zip->addFromString($filename, $datastring);
			}
		}
		else {
			$zip->close();
			// Remove the zip file to avoid unnecessary disk-space consumption
			unlink($randomZipName);

			// Throw exception if ZIP is not created successfully
			throw new ZarafaException(_("ZIP is not created successfully"));
		}

		$zip->close();

		// Set the headers
		header('Pragma: public');
		header('Expires: 0'); // set expiration time
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
		header('Content-Disposition: attachment; filename="' . addslashes(browserDependingHTTPHeaderEncode(_("Messages") . date(" d-m-Y") . ".zip")) . '"');
		header('Content-Transfer-Encoding: binary');
		header('Content-Type:  application/zip');
		header('Content-Length: ' . filesize($randomZipName));

		// Send the actual response as ZIP file
		readfile($randomZipName);

		// Remove the zip file to avoid unnecessary disk-space consumption
		unlink($randomZipName);
	}