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Groups > linux.debian.bugs.dist > #1070811

Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files

From Christoph Anton Mitterer <calestyo@scientia.net>
Newsgroups linux.debian.bugs.dist
Subject Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files
Date 2021-09-11 22:10 +0200
Message-ID <CWhu1-73w-3@gated-at.bofh.it> (permalink)
References (8 earlier) <CWg4W-660-5@gated-at.bofh.it> <w224W-65h-15@gated-at.bofh.it> <CWhkl-6KM-5@gated-at.bofh.it> <w224W-65h-15@gated-at.bofh.it> <CWhkl-6KM-5@gated-at.bofh.it>
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On Sat, 2021-09-11 at 21:55 +0200, Guilhem Moulin wrote:
> The use of `printf %b` to decode escape sequences is an internal
> implementation detail; documenting it would tie our hands for
> implementation changes…
> 
> Also there is no guaranty that /bin/sh is dash; don't forget that we
> also run at initramfs stage where /bin/sh is typically `busybox ash`
> (but again no guaranty, it can be dash, bash, klibc's sh, or anything
> else) for which `printf %b` *does* decode \xHH.

True.
Well then best is probably to e.g. document the \0xxx and mention that
any other use of \ needs to have that quoted or it may have a special
meaning?

That should neither over- nor under-specify it.


Cheers,
Chris.
> >

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Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-09 01:00 +0200
  Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-09 01:30 +0200
  Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-09 02:00 +0200
  Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 02:00 +0200
    Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 02:10 +0200
    Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-11 03:20 +0200
      Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 17:20 +0200
        Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-11 18:00 +0200
          Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 18:40 +0200
          Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 20:00 +0200
            Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-27 03:10 +0200
              Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-27 03:40 +0200
              Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-27 17:30 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-27 18:30 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-27 18:50 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-27 19:30 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-27 21:20 +0200
        Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-11 18:10 +0200
          Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 18:40 +0200
            Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-11 20:10 +0200
              Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 20:40 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-11 22:00 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Christoph Anton Mitterer <calestyo@scientia.net> - 2021-09-11 22:10 +0200
                Bug#901795: cryptsetup-initramfs: please provide documented shell functions to validate/sanitize cryptroot entries in 3rd party hook files Guilhem Moulin <guilhem@debian.org> - 2021-09-11 22:20 +0200

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