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add support check udf iso #155

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12 changes: 11 additions & 1 deletion matchers/archive.go
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
package matchers

import "encoding/binary"
import (
"encoding/binary"
)

const (
ZstdMagicSkippableStart = 0x184D2A50
Expand Down Expand Up @@ -37,6 +39,7 @@ var (
TypeIso = newType("iso", "application/x-iso9660-image")
TypeMachO = newType("macho", "application/x-mach-binary") // Mach-O binaries have no common extension.
TypeParquet = newType("parquet", "application/vnd.apache.parquet")
TypeUdf = newType("udf", "application/x-iso13346-image") // https://zh.wikipedia.org/wiki/%E9%80%9A%E7%94%A8%E5%85%89%E7%A2%9F%E6%A0%BC%E5%BC%8F
)

var Archive = Map{
Expand Down Expand Up @@ -180,6 +183,13 @@ func Iso(buf []byte) bool {
buf[32773] == 0x31
}

func Udf(buf []byte) bool {
return len(buf) >= 36870 &&
string(buf[32769:32774]) == "BEA01" &&
(string(buf[34817:34822]) == "NSR03" || string(buf[34817:34822]) == "NSR02") &&
string(buf[36865:36870]) == "TEA01"
}

func MachO(buf []byte) bool {
return len(buf) > 3 && ((buf[0] == 0xFE && buf[1] == 0xED && buf[2] == 0xFA && buf[3] == 0xCF) ||
(buf[0] == 0xFE && buf[1] == 0xED && buf[2] == 0xFA && buf[3] == 0xCE) ||
Expand Down