Elf parsed as mp3

[alex-bender]

Elf parsed as mp3

[alex-bender]

sorry to disturb, it looks like recent version is working fine

[wader]

Hi, nope that should ideally not happen. I suspect what happens is that the elf decode fails for some reason (because of bug?) which makes it possible for the mp3 decoder to get a chance to decode it which succeeds (because of other bug).

Would it be possible for you to share or link to the ls binary our testing on? that would make it easer to fix the elf bug and also tune the mp3 heuristics a bit.

BTW you can do fq -d elf d /bin/ls if you want to try only the elf decoder which also will give a partial decode tree if it fails.

[alex-bender]

$ fq -d elf d /bin/ls
       |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17|0123456789abcdef01234567|.{}: /bin/ls (elf)
       |                                                                       |                        |  error: elf: BytesRange: failed at position 139932 (read size 2280 seek pos 0): EOF
       |                                                                       |                        |  ident{}:
0x00000|7f 45 4c 46                                                            |.ELF                    |    magic: raw bits (valid)
0x00000|            02                                                         |    .                   |    class: 64 (2)
0x00000|               01                                                      |     .                  |    data: "little-endian" (1)
0x00000|                  01                                                   |      .                 |    version: 1
0x00000|                     00                                                |       .                |    os_abi: "Sysv" (0)
0x00000|                        00                                             |        .               |    abi_version: 0
0x00000|                           00 00 00 00 00 00 00                        |         .......        |    pad: raw bits (all zero)
0x00000|                                                03 00                  |                ..      |  type: "Dyn" (0x3)
0x00000|                                                      3e 00            |                  >.    |  machine: "AMD x86-64" (0x3e)
0x00000|                                                            01 00 00 00|                    ....|  version: 1
0x00018|d0 67 00 00 00 00 00 00                                                |.g......                |  entry: 26576
0x00018|                        40 00 00 00 00 00 00 00                        |        @.......        |  phoff: 64
0x00018|                                                c0 23 02 00 00 00 00 00|                .#......|  shoff: 140224
0x00030|00 00 00 00                                                            |....                    |  flags: 0
0x00030|            40 00                                                      |    @.                  |  ehsize: 64
0x00030|                  38 00                                                |      8.                |  phentsize: 56
0x00030|                        0d 00                                          |        ..              |  phnum: 13
0x00030|                              40 00                                    |          @.            |  shentsize: 64
0x00030|                                    1e 00                              |            ..          |  shnum: 30
0x00030|                                          1d 00                        |              ..        |  shstrndx: 29
0x00030|                                                06 00 00 00 04 00 00 00|                ........|  unknown0: raw bits
0x00048|40 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00|@.......@.......@.......|

[alex-bender]

bin.ls.tar.gz

[wader]

Thanks, what version of fq are you using? master seems to decode it fine

[wader]

Aha no problem!

[wader]

But good input for improving the mp3 decoder 👍

[alex-bender]

It could save a bit of work writing template for github issue, asking to provide a version or check on recent version.
my previous was fq -v => dev so it goes.

[Doctor-love]

It could save a bit of work writing template for github issue, asking to provide a version or check on recent version. my previous was fq -v => dev so it goes.

Great suggestion - will look into it!

[wader]

@Doctor-love That would be great. Asked for verison, try master, ask for verbose output, ask for example files i guess?

@alex-bender Thanks good idea. Sorry for the dev version thingy that has been addressed in later versions also.