data, based on the above ZIP header
			// offsets:
			$first_file_start = array_sum(unpack('v2', substr($gzData, 26, 4)));
			if (false !== ($decompressed = @gzinflate(substr($gzData, 30 + $first_file_start)))) {
				return $decompressed;
			}
			return false;
		}

		// Finally fall back to straight gzinflate
		if (false !== ($decompressed = @gzinflate($gzData))) {
			return $decompressed;
		}

		// Fallback for all above failing, not expected, but included for
		// debugging and preventing regressions and to track stats
		if (false !== ($decompressed = @gzinflate(substr($gzData, 2)))) {
			return $decompressed;
		}

		return false;
	}

	public static function match_domain($host, $reference) {
		// Check for a direct match
		if ($host === $reference) {
			return true;
		}

		// Calculate the valid wildcard match if the host is not an IP address
		// Also validates that the host has 3 parts or more, as per Firefox's
		// ruleset.
		$parts = explode('.', $host);
		if (ip2long($host) === false && count($parts) >= 3) {
			$parts[0] = '*';
			$wildcard = implode('.', $parts);
			if ($wildcard === $reference) {
				return true;
			}
		}

		return false;
	}
}