Hello Matthias,
A writeable tmpdir is normally required by Inline.
Unchecked:
You could overwrite that subroutine from your code with a hack like
*Inline::find_temp_dir { return '/dev/null' }
That will overwrite the Inline.pm version and return a true value for
checking.
Kind Regards
James
*Dr James Freeman*
Founder
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On Tue, 29 Jan 2019 at 23:16, Matthias Apitz <g...@unixarea.de> wrote:
>
> Hello,
>
> We're using Inline-C in a Perl CGI-engine to connect to a C-written
> shared library (libblow.so) for decrypting strings with BlowFish (to
> obfuscate the
> details and the used key). This is delivered to a production environment
> as:
>
> # ls -ld /usr/local/sisis-pap/lib/.Inline
> drwxr-xr-x 4 bin bin 4096 Jan 25 12:32 /usr/local/sisis-pap/lib/.Inline
> # find /usr/local/sisis-pap/lib/.Inline
>
> /usr/local/sisis-pap/lib/.Inline
> /usr/local/sisis-pap/lib/.Inline/config-x86_64-linux-thread-multi-5.026002
> /usr/local/sisis-pap/lib/.Inline/lib
> /usr/local/sisis-pap/lib/.Inline/lib/auto
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdminInstall_pl_64f0
>
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdminInstall_pl_64f0/SisisAdminInstall_pl_64f0.inl
>
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdminInstall_pl_64f0/SisisAdminInstall_pl_64f0.so
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdmin_64f0
>
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdmin_64f0/SisisAdmin_64f0.inl
>
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdmin_64f0/SisisAdmin_64f0.so
> /usr/local/sisis-pap/lib/.Inline/build
> /usr/local/sisis-pap/lib/.Inline/.lock
>
> # ldd
> #
> /usr/local/sisis-pap/lib/.Inline/lib/auto/SisisAdminInstall_pl_64f0/SisisAdminInstall_pl_64f0.so
> linux-vdso.so.1 (0x00007ffc223fb000)
> libblow.so => /usr/local/sisis-pap/lib/libblow.so
> (0x00007efdeb377000)
> libssl.so.1.1 => /usr/local/sisis-pap/lib/libssl.so.1.1
> (0x00007efdeb109000)
> ...
>
> and works just fine. Note: the things below .Inline are there and not
> compiled on the flight on first use of the Inline-C code.
>
> The only problem is, that the dir .Inline must be writeable by the
> apache-process which runs as 'nobody'. This is checked in Inline.pm as:
>
>
> #==============================================================================
> # Find the 'Inline' directory to use.
>
> #==============================================================================
> my $TEMP_DIR;
> sub find_temp_dir {
> return $TEMP_DIR if $TEMP_DIR;
>
> my ($temp_dir, $home, $bin, $cwd, $env);
> $temp_dir = '';
> $env = $ENV{PERL_INLINE_DIRECTORY} || '';
> $home = $ENV{HOME} ? abs_path($ENV{HOME}) : '';
>
> if ($env and
> -d $env and
> -w $env) {
> $temp_dir = $env;
> }
> ...
>
> Why is the check '-w $env' made there, at the beginning? Of course, if
> something really
> must be compiled, it must be writable, but not in any use case, like
> ours.
>
> matthias
>
> --
> Matthias Apitz, ✉ g...@unixarea.de, http://www.unixarea.de/
> +49-176-38902045
> Public GnuPG key: http://www.unixarea.de/key.pub
> October, 7 -- The GDR was different: Peace instead of Bundeswehr and wars,
> Druschba
> instead of Nazis, to live instead of to survive.
>
