unoconv works from terminal using www-data but not from php script also as www-data

Question

I wrote the following function in php

public static function convert($originFilePath, $outputDirPath, $toFormat)
{
    $command = 'echo $PATH & UNO_PATH=/usr/lib/libreoffice unoconv --format %s --output %s %s';
    $command = sprintf($command, $toFormat, $outputDirPath, $originFilePath);
    exec($command, $output, $result_var);

    return compact('output', 'result_var', 'outputDirPath', 'originFilePath', 'toFormat');
}

It did not generate any error message, or any pdf file as well.

In terminal, when I run the unoconv directly as www-data, I had no issues.

This is my result after execution:

2013-05-26 03:05:30 Error: Array
(
    [output] => Array
        (
            [0] => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
        )

    [result_var] => 1
    [outputDirPath] => /var/virtual/storyzer.com/cake-json/ltequotationapp/webroot/outputfiles/Excel/2
    [originFilePath] => /var/virtual/storyzer.com/cake-json/ltequotationapp/webroot/outputfiles/Excel/2/dsadas.xlsx
    [toFormat] => pdf
)

Please advise.

Generally

Answer 1

For a possible solutions see here.

Excerpt from post...

This is what I did to make unoconv work through apache / php code running on Cent OS 6.2 (unoconv version 0.6 and LibreOffice 3.4.5.2): (This is only a workaround - root cause is not known to me)

Change apache user from /sbin/nologin to /bin/bash (This is done in /etc/passwd file) Add a new user unoconv Added a new file /etc/sudoers.d/unoconv with the following contents:

apache ALL=(unoconv) NOPASSWD: /usr/bin/unoconv (note that my unoconv program is in this location /usr/bin/unoconv - you find it using which unoconv)

Using visudo comment out the followin line (by adding a # at the start of the line)

#Defaults requiretty

Restart sshd and httpd services

Run unoconv like this with php exec() function (you would need to change the input file name and output directory):

exec('sudo -u unoconv /usr/bin/unoconv -f pdf -o bankgenerated Teacher_bulk_upload.csv');

Hope this works out for you

Jeremie

I saw this before while googling. I was trying out other possible solutions before I want to try this workaround. I will wait for other possible solutions. If nothing good comes out, I will resort to this workaround. Thanks!~ – Generally

Answer 2

The issue is that I am using Nginx and PHP-FPM.

In Nginx the PATH is NOT declared by default.

So there are 2 solutions.

1) you declare it in the fastcgi params for Nginx.

See here.

2) you declare it in the script using putenv() just before you run the unoconv code.

like

putenv('PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/opt/node/bin');

I would also like to add that a certain troubleshooting method helped me to realize this problem. See here.

Generally

Took me more than a week but I finally figured it out! :) The internet is awesome!~~ – Generally

Answer 3

I had the same problem and resolved it by adding two sub-folders in /var/www/ .cache and .config which are required for unoconv

Env Ubuntu 18.04 server Apache, unoconv 0.7, platform posix/linux, python 3.6.9 (default, Dec 8 2021, 21:08:43), [GCC 8.4.0], LibreOffice 6.0.7.3

    user@ip-*-*-*-*:/var/www$ sudo mkdir .cache
    user@ip-*-*-*-*:/var/www$ sudo chown -R www-data:www-data .cache/
    user@ip-*-*-*-*:/var/www$ sudo chmod -R 744 .cache/
    user@ip-*-*-*-*:/var/www$ sudo mkdir .config
    user@ip-*-*-*-*:/var/www$ sudo chown -R www-data:www-data .config/
    user@ip-*-*-*-*:/var/www$ sudo chmod -R 744 .config/

The home folder of www-data is /var/www/ which by default is set to the root user and unoconv can't create the required folders for cache and config.

To check your www-data $HOME

sudo cat /etc/passwd | grep www-data
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin

I think that is not safe to change the permissions of /var/www/ (to www-data user and group) but is ok to add the .cache and .config folder with www-data permissions. Lets some experts confirm.

P.S. the generator return an error about the docx version but the pdf is generated

$command = 'unoconv -f pdf ' . $path.$file;
exec($command, $output);

Citronella