Third-party software integration: Antivirus

OpenKM can check if a submitted document is infected. It works with an Open Source antivirus software called ClamAV. Edit OpenKM.cfg and add this line:

system.antivir=/path/to/clamscan

This screenshot shows an error message from OpenKM because the submitted document is infected by a virus:

Debian / Ubuntu

To install ClamAV on Debian / Ubuntu distribution:

 $ sudo aptitude install clamav

RedHat / CentOS

To install ClamAV in Centos 5.2 you need more work. First create a file named /etc/yum.repos.d/dag.repo with this content:

[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag/
gpgcheck=1
gpgkey=http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt
enabled=1

Now install the program as root:

$ yum install clamd.i386

Start the daemon:

$ /etc/init.d/clamd start

And update the virus database:

$ freshclam

Windows

To Install and Configure ClamAV on Windows:

Note: GREEN Text like this denotes commands run in a command console/terminal

BLACK Text like this denotes code changes

• Download the newest version (either i386 OR 64 bit) from: http://sourceforge.net/projects/clamav/files/clamav/win32/

• Unpack the ZIP archive and move it to: C:\ so that it appears in your path as: C:\ClamAV

• Copy the example conf files from C:\ClamAV\conf_examples to C:\ClamAV

• Open up a command terminal: Start->Run cmd

• Change to the ClamAV directory: cd C:\ClamAV

• Run clamconf.exe, it should complain that you need to edit the example config file. (I included this just so you can check that the files are in the right location)

For DEFAULT MINIMAL configuration (Probably not suitable and you should configure the parameters for your situation) Edit freshclam.conf, clamav-milter.conf and comment Example. In addition to commenting Example in clamd.conf; to enable the local server you will need to change line 80 to: LocalSocket C:\CLAMAV\clamd.socket

• Run clamconf.exe again, you will get an output of all your configurations.

Initially you will get a note about being unable to open database, this is because it has not been created yet.

• Run mkdir database. If you run clamconf again you will see that the database error is gone and that you have 0 signatures

• Run freshclam.exe, this will start the initial signature download for ClamAV and may take a few minutes.

At this point you can run clamd.exe to check that the server can run manually. (If you decide to test run at this point, you will have to kill the process for the next section)

Clamd Service Setup

Now to setup it up so it starts automatically:

• Run sc create ClamD binPath= C:\Program Files\Windows Resource Kits\Tools\srvany.exe (yes the space is required in this command and you may have your resource tools in a different location)

It should tell you: [SC] CreateService SUCCESS

• Run Regedit. Find: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ClamD
  • Right click on ClamD and create a new Key
  • Name the key Parameters
  • Click on the new Parameters Key, in the right pane create a new String Value
  • Name the String Value Application
  • Right click and Modify Application to: C:\ClamAV\clamd.exe -c C:\ClamAV\clamd.conf
  • Close Regedit

• Run services.msc
  • Find ClamD in the list
  • Right click -> Properties
  • Change Startup type to: Automatic
  • Select the recovery tab and change all three failures to: Restart the Service
  • Select the General tab and Apply

Freshclam Virus Signature Auto Update

We are almost done!

• Navigate to: Start->All Programs->Accessories->System Tools->Scheduled Tasks
• Add Scheduled Task
• Next->Browse to C:\ClamAV\freshclam.exe
• Select to Perform this task daily
• Next
• Select a good time to update
• Next
• Enter the user credentials to run as
• Next
• Select open Advance options
• Next
• Alter Run to be: C\ClamAV\freshclam.exe -c C:\ClamAV\freshclam.conf
• Select the Settings Tab
• Change the Stop Task to 30 minutes
• Apply
• Ok

Right click and run the freshclam task to make sure you do not have any errors

Finally, you need to set system.antivir=C:\ClamAV\clamscan.exe in OpenKM. Depending on your version you can use the Administration panel or OpenKM.cfg.

If everything is working, the document scanning will work in the OpenKM Windows install!