@@ -155,7 +155,7 @@ pub const Header = struct {
// If the leading byte is 0x80 (128), the non-leading bytes of the
// field are concatenated in big-endian order.
if (raw[0] == 0x80) {
if (raw[1] + raw[2] + raw[3] != 0) return error.TarNumericValueTooBig;
if (raw[1] != 0 or raw[2] != 0 or raw[3] != 0) return error.TarNumericValueTooBig;
return std.mem.readInt(u64, raw[4..12], .big);
}
return try header.octal(start, len);
@@ -769,6 +769,7 @@ test "tar header parse size" {
.{ .in = "\x80\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08", .want = 0x0102030405060708 },
.{ .in = "\x80\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09", .err = error.TarNumericValueTooBig },
.{ .in = "\x80\x00\x00\x00\x07\x76\xa2\x22\xeb\x8a\x72\x61", .want = 537795476381659745 },
.{ .in = "\x80\x80\x80\x00\x01\x02\x03\x04\x05\x06\x07\x08", .err = error.TarNumericValueTooBig },
// // Test base-8 (octal) encoded values.
.{ .in = "00000000227\x00", .want = 0o227 },