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Binary file not executed for web user – Apache

I have a php script that creates a shell script file that finally executes as the www-data user, all of the commands are executed except for the last one which implies a binary file. If I run the command as root, it runs ok…

This is the last part of the script:

&& echo "Tokenizing the file........" >> Logs/table_of_contents.php 
&& perl ../common/Scripts/xmltokenize.pl --filename=xmlfiles/table_of_contents.xml >> Logs/table_of_contents.php 
&& perl ../common/Scripts/xmlrenumber.pl --filename=xmlfiles/table_of_contents.xml >> Logs/table_of_contents.php 
&& echo "Tagging the file........" >> Logs/table_of_contents.php 

# I have added this line to check if it helps but id doesn't
&& export HOME="/tmp/" 

# And this is the command that calls the binary file
&& perl tagfile.pl xmlfiles/table_of_contents.xml

Here you have the content of the tagfile.pl

use File::Find;
$ = "n";

$fn = shift;

if ( $fn =~ /([^/.]+).xml/ ) { $fileid = $1; } else { exit;};
print $fileid;

$cmd = "perl tagfl2/makevrt.pl 'xmlfiles/$fileid.xml' > 'tagtmp/$fileid.vrt'";
print $cmd;
print `$cmd`;

#ALL OF THE PREVIOUS WORKS
#THIS IS THE ONE THAT GIVES PERMISSION ERRORS 
# OF COURSE: "www-data:www-data tagtmp/" and "www-data:www-data $fileid.vrt = table_of_contents.vrt"
$cmd = "cut -f 1 tagtmp/'$fileid.vrt' | tagfl2/treetagger/bin/tree-tagger -no-unknown -token -lemma tagfl2/treetagger/lib/english.par  > 'tagtmp/$fileid.tagged'";
print $cmd;
`$cmd`;
$cmd = "perl tagfl2/mrg.pl 'tagtmp/$fileid.vrt' 'tagtmp/$fileid.tagged' > 'tagtmp/$fileid.mrg'";
print $cmd;
`$cmd`;
$cmd = "perl tagfl2/tagxml.pl 'tagtmp/$fileid.mrg' 'xmlfiles/$fileid.xml'";
print $cmd;
`$cmd`;

Here is the error:

sh: 1: tagfl2/treetagger/bin/tree-tagger: Permission denied

Also, just in case: 

chown -R www-data:www-data tagfl2/
chmod -R g+rwx tagfl2/
Tags:

3

Answers


  1. Chosen as BEST ANSWER
    0

    Ok, all solved, one thing was giving the file system, actually the mounted unit, the exec attribution.

    The second thing was moving treetagger directory to /usr/local/

    Then, at /usr/local/bin/ I have created a soft link this way:

    ln -s ../treetagger/bin/tree-tagger

    Making the binary file globally executable. Actually, this last step was the ultimate solution.

    Then at the tagfile.pl perl script, the line containing the tree-tagger command, I have changed it this way:

    cut -f 1 'tagtmp/$fileid.vrt' | /usr/local/bin/tree-tagger -no-unknown -token -lemma tagfl2/treetagger/lib/english.par  > 'tagtmp/$fileid.tagged'

  2. 0

    Try to define a full path to the script

    $cmd = "perl /[full_path]/makevrt.pl 'xmlfiles/$fileid.xml' > 'tagtmp/$fileid.vrt'";
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  3. 0

    Why did you update user ownership?
    Changing the group ownership should have been enough:

    chgrp -R www-data tagfl2/
chmod -R g+rwX tagfl2/

    And change the lowercase x by a greater one, to give access/execution permission, only if it is already the case for the user owner (no need to give otherwise).

    You may then check the permission like this:

    su -m -c 'ls -R tagfl2/' www-data

    And see if you reproduce access issue; and then update permission accordingly.

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