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luajit: magic number: raw bits, check with assert

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This commit is contained in:
Babz 2023-06-20 23:28:34 +02:00
parent 29ab66b3eb
commit e44f5c00b8
3 changed files with 3 additions and 8 deletions
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7
format/luajit/luajit.go
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@ -59,12 +59,7 @@ type DumpInfo struct {
}
func LuaJITDecodeHeader(di *DumpInfo, d *decode.D) {
magic := d.FieldStr("magic", 3, encoding.Nop)
ok := bytes.Equal([]byte(magic), []byte{0x1b, 0x4c, 0x4a})
if !ok {
d.Errorf("invalid magic number")
}
d.FieldRawLen("magic", 3*8, d.AssertBitBuf([]byte{0x1b, 0x4c, 0x4a})) // ESC 'L' 'J'
d.FieldU8("version")

2
format/luajit/testdata/simple.fqtest vendored
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@ -1,7 +1,7 @@
$ fq dv -d luajit simple.luac
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: simple.luac (luajit) 0x0-0x14e.7 (335)
| | | header{}: 0x0-0x17.7 (24)
0x000|1b 4c 4a |.LJ | magic: "\x1bLJ" 0x0-0x2.7 (3)
0x000|1b 4c 4a |.LJ | magic: raw bits (valid) 0x0-0x2.7 (3)
0x000| 02 | . | version: 2 0x3-0x3.7 (1)
| | | flags{}: 0x4-0x4.7 (1)
0x000| 0c | . | raw: 12 0x4-0x4.7 (1)

2
format/luajit/testdata/simple_stripped.fqtest vendored
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@ -1,7 +1,7 @@
$ fq dv -d luajit simple_stripped.luac
|00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: simple_stripped.luac (luajit) 0x0-0xf9.7 (250)
| | | header{}: 0x0-0x4.7 (5)
0x00|1b 4c 4a |.LJ | magic: "\x1bLJ" 0x0-0x2.7 (3)
0x00|1b 4c 4a |.LJ | magic: raw bits (valid) 0x0-0x2.7 (3)
0x00| 02 | . | version: 2 0x3-0x3.7 (1)
| | | flags{}: 0x4-0x4.7 (1)
0x00| 0e | . | raw: 14 0x4-0x4.7 (1)