Solved

cgi wont run under apache

Posted on 2002-07-18
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Last Modified: 2013-11-18
hi all,
i wrote a cgi that use some so files(shared object).
when i run it from a shell, everything is ok.
when i run it as cgi, it failed and said it can't find the so  file.
i added to httpd.conf:
 "SetEnv LD_LIBRARY_PATH /mypath/toso"
and it still not working.

do you have any idea ????

appreciate any help
Ori
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Question by:o_helman
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Expert Comment

by:jlevie
ID: 7162093
Why not just add the directories that contain the needed shared libs to /etc/ld.so.conf and run ldconfig to rebuild the cache. Then restart Apache and your cgi will be able to find the shared libs.
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Author Comment

by:o_helman
ID: 7162125
hi jlevie
i tried it but it still not working
is there a way to know in what directories the apache is looking when he search for so files?

thanks
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LVL 51

Expert Comment

by:ahoffmann
ID: 7162206
I'd start with writing a wrapper script for your cgi like this:

#! /usr/bin/sh
echo "Content-Type:text/html"; echo ""
echo '<HTML><BODY><PRE>'
echo "LD_LIBRARY_PATH = $LD_LIBRARY_PATH" '<HR>'
echo "/usr/bin/ldd /path/to/your.cgi"
      /usr/bin/ldd /path/to/your.cgi
echo '</PRE></BODY></HTML>'
exit 0
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Expert Comment

by:jlevie
ID: 7162231
Apache will use the system shared library search path as shown in /etc/ld.so.conf and any directories in the LD_LIBRARY_PATH env var of the shell that started Apache. You can check to see that the shared libs were found by ldconfig by examining the output of 'ldconfig -p'. Generally all that's necessary is to have the libs in the ld cache, but there are some cases where an application needs certain env variables set that tell it things about it's run time environment. What, exactly, are you trying to do in the cgi?
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Author Comment

by:o_helman
ID: 7162322
im building a cgi that use some 3rd party libraries to convert files.
i tried building a script and the strange thing happened:
when i run ldconfig -p from shell, he gave me all the necessary files from the right directory.
when i ran it from the script (as cgi) he didnt show the necessary so files. !!!!!!!!!!!!
like he doesn't have them.

how can this be?
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Author Comment

by:o_helman
ID: 7162331
sorry................:-))
my mistake.........it does show the right libs from the cgi

so whats wrong ??????????????/

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Author Comment

by:o_helman
ID: 7162395
here is the result of my script:
LD_LIBRARY_PATH= /home/ori/wiexp
/usr/bin/ldd /usr/local/apacge/cgi-bin/convert
        libsc_da.so => not found
        libsc_ex.so => not found
        libsc_fa.so => not found
        libsc_ch.so => not found
        libsc_fi.so => not found
        libsc_ut.so => not found

ldconfig -l
=> /home/ori/wiexp/libvs_zip.so
        libvs_xy.so (libc6) => /home/ori/wiexp/libvs_xy.so
        libvs_xl5.so (libc6) => /home/ori/wiexp/libvs_xl5.so
        libvs_w97.so (libc6) => /home/ori/wiexp/libvs_w97.so
        libvs_w6.so (libc6) => /home/ori/wiexp/libvs_w6.so
=> /home/ori/wiexp/libsc_da.so
        libsc_da.so(libc6) => /home/ori/wiexp/libsc_da.so
....
....
...
all the so that im looking for.
so whats wrong ?????????
any idea?

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Author Comment

by:o_helman
ID: 7162443
i solved the problem.
home/ori didnt have access for xwr. !!!!!!!!!!!!

i chmod to 777 and all is working now

thanks guys for your help  
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Expert Comment

by:ahoffmann
ID: 7163344
chmod 555 should be enough
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