Niels Thykier wrote... > Can you help me come up with a more reliable regex / handling of file(1) > output that satisfy your request from #931996 and also avoiding > regressions like this bug?
Ups, sorry for breaking debhelper the second time in a week. Y'know,
three time's a charm, still it's called unstable for a reason :=]
Anyway, looking into the file sources and playing around a bit I
learned some results of a stat call are prefixed to the actual
detection text, indeed failing the left-anchored ELF string for setuid
executables. The worst that can happen for ELF executables is something
like
| setuid, setgid, sticky ELF 64-bit LSB pie executable, (...)
and in that order. Aside, I cannot imagine sticky executable files but
it's technically possible, so let's play safe.
So a quick and lazy solution was
| /^([a-z, ]*)?ELF/
while a less error-prone is
| /^((setuid|setgid|sticky),? )*ELF/
although that one supports Perl reputation of being write-only code.
Still both do the job, I've checked.
Kind regards,
Christoph
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