pfSense

		/* restore rrddata/xmldata and clear appropriate data,

		 * see https://redmine.pfsense.org/issues/11050 */

		$data = file_get_contents("$file");

		$conf = parse_xml_config("$file", $g['xml_rootobj']);

		if ($conf['rrddata']) {

			restore_rrddata($conf);

			$data = clear_tagdata("rrd", $data);

		}

		foreach ($g['backuppath'] as $bk => $path) {

			if (!empty($conf[$bk][$bk.'data'])) {

				restore_xmldatafile($bk, $conf);

				$data = clear_tagdata($bk, $data);

			}

		}

		file_put_contents($file, $data);

/*

 *	Backup RRD/XML Data

 */

/* If the config on disk had rrddata/xmldata tags already, remove that section first.

 * See https://redmine.pfsense.org/issues/8994,

 *     https://redmine.pfsense.org/issues/10508, 

 *     https://redmine.pfsense.org/issues/11050 */

function clear_tagdata($tag = "rrd", $data) {

	$data = preg_replace("/[[:blank:]]*<{$tag}data>.*<\\/{$tag}data>[[:blank:]]*\n*/s", "", $data);

	$data = preg_replace("/[[:blank:]]*<{$tag}data\\/>[[:blank:]]*\n*/", "", $data);

	return $data;

}

function restore_xmldatafile($type='voucher', $conf = false) {

	global $config, $g;

	if (!$conf) {

		$conf = & $config;

	}

	foreach ($conf[$type]["{$type}data"]["xmldatafile"] as $file) {

		$basename = basename($file['filename']);

		$dirname = dirname($g['backuppath'][$type]);

		$xmldata_file = "{$dirname}/{$basename}";

		if (file_put_contents($xmldata_file, gzinflate(base64_decode($file['data']))) === false) {

			log_error(sprintf(gettext("Cannot write %s"), $xmldata_file));

			continue;

		}

	}

}

function restore_rrddata($conf = false) {

	global $config, $g, $rrdtool, $input_errors;

	if (!$conf) {

		$conf = & $config;

	}

	foreach ($conf['rrddata']['rrddatafile'] as $rrd) {

		if ($rrd['xmldata']) {

			$rrd_file = "{$g['vardb_path']}/rrd/{$rrd['filename']}";

			$xml_file = preg_replace('/\.rrd$/', ".xml", $rrd_file);

			if (file_put_contents($xml_file, gzinflate(base64_decode($rrd['xmldata']))) === false) {

				log_error(sprintf(gettext("Cannot write %s"), $xml_file));

				continue;

			}

			$output = array();

			$status = null;

			exec("$rrdtool restore -f '{$xml_file}' '{$rrd_file}'", $output, $status);

			if ($status) {

				log_error("rrdtool restore -f '{$xml_file}' '{$rrd_file}' failed returning {$status}.");

				continue;

			}

			unlink($xml_file);

		} else if ($rrd['data']) {

			$rrd_file = "{$g['vardb_path']}/rrd/{$rrd['filename']}";

			$rrd_fd = fopen($rrd_file, "w");

			if (!$rrd_fd) {

				log_error(sprintf(gettext("Cannot write %s"), $rrd_file));

				continue;

			}

			$data = base64_decode($rrd['data']);

			/* Try to decompress the data. */

			$dcomp = @gzinflate($data);

			if ($dcomp) {

				/* If the decompression worked, write the decompressed data */

				if (fwrite($rrd_fd, $dcomp) === false) {

					log_error(sprintf(gettext("fwrite %s failed"), $rrd_file));

					continue;

				}

			} else {

				/* If the decompression failed, it wasn't compressed, so write raw data */

				if (fwrite($rrd_fd, $data) === false) {

					log_error(sprintf(gettext("fwrite %s failed"), $rrd_file));

					continue;

				}

			}

			if (fclose($rrd_fd) === false) {

				log_error(sprintf(gettext("fclose %s failed"), $rrd_file));

				continue;

			}

		}

	}

}