[Debburn-devel] CD-Extra issues

[Ralf Baechle]

On Wed, Dec 03, 2014 at 11:25:45PM +0100, Ralf Baechle wrote:

> -x is -t x2 that is 16 bit values.  -t x1 gives a bytewise hexdump:
> 
> 0000000 37 76 9a 9e 71 34 3e 02 39 22 19 83 76 b9 2d 94
> 0000020 8c d7 86 36 ad f8 7f b6 e5 62 bf bd 94 82 94 fa
> 0000040 63 f8 f2 6d aa ce ed 52 59 3a fb 83 c4 18 e6 5f
> 0000060 5b dc 28 1f 6b cd 5d ca 6b b2 ab 94 82 be 77 4c
> 0000100 90 71 6f a6 46 6c 64 f6 1e ac a0 d9 14 9d f5 4e
> 0000120 bf 6e 93 5f 6f d3 73 56 6f 4f 98 d5 ae fd ac 25
> 0000140 bd 9c f5 ae ce a3 ae 69 fe ed 2e 3a 9b 9d ed 9e
> 0000160 2e ef 8d 6f ce 47 cd c7 2b b8 97 74 c8 95 08 1c
> 0000200 0e a2 e4 6d 43 50 96 8e c0 da 02 90 66 84 10 4f
> 0000220 04 68 b5 80 51 8a 51 3f 14 25 cb e4 f2 58 91 b2
> 0000240 ea a6 bf 87 b7 7c 22 87 a0 2f 6d 3c a2 74 5c 08
> 0000260 60 a4 b2 62 9b 16 48 05 12 d2 1c 54 49 e3 1d 04
> 0000300 07 40 e2 53 3a 05 83 a1 84 54 b4 8b f7 61 9a 3c
> 0000320 9a 0b a0 80 df 57 d6 aa d5 78 98 e7 b2 50 41 1a
> 0000340 45 88 a9 2e 4c 58 36 8c 6b b0 bd 92 55 53 25 2d
> 0000360 01 95 9d 8d 54 9e 94 69 2f 9c 47 76 ce 36 9a 39
> 0000400 1d 82 f9 0b ff 3a 63 af a7 0c d0 2c 94 41 47 24
> 0000420 93 40 52 8c 21 a3 28 32 8a 82 e0 bb 1b 81
> 0000436
> 
> Looks to me like random byte soup.

Suspiciously random byte soup.  Such as compressed data.  So I was
wondering if that actually is content of the files of the ISO fs:

$ for i in cd/*.mp3; do echo $i; od -A x -t x1 $i | \
	grep '37 76 9a 9e 71 34 3e 02 39 22 19 83 76'; done
cd/track-01.mp3
049000 37 76 9a 9e 71 34 3e 02 39 22 19 83 76 b9 2d 94
cd/track-02.mp3
cd/track-03.mp3
[...]

So right from the middle.

  Ralf