Add right-click virus scanning capability to Nautilus

**robert_pectol** · December 15th, 2005

With this script saved in ~/.gnome2/nautilus-scripts, you can scan files or directories for viruses by simply right-clicking on them in Nautilus and selecting this script from the, "Scripts" dropdown menu. It relies on Clam Anti-virus which can be easily installed by doing, "sudo apt-get install clamav" in a shell. Simply copy the code below, into a text file and save it as, "virus-scan" and make it executable (ex: chmod 755 virus-scan). Again, it needs to be located in your ~/.gnome2/nautilus-scripts (dot in front of 'gnome2') directory. Anyway, here's the script:

Code:

#!/bin/bash
#
#  Nautilus anti-virus scanner script v1.2 - Uses Clam Anti-virus
#  Written by Robert Pectol, December 2005 - http://rob.pectol.com
#
#  This program is free software.  It is distributed in the hope
#  that it will be useful, but WITHOUT ANY WARRANTY; without even
#  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
#  PURPOSE.  See the GNU General Public License for more details.
######################################################################

#  Set some variables used in the script
files=$1
if [ "$NAUTILUS_SCRIPT_CURRENT_URI" == "x-nautilus-desktop:///" ]; then
        files_path=$HOME"/Desktop"
else
        files_path=`echo $NAUTILUS_SCRIPT_CURRENT_URI | sed -e 's/^file:\/\///'`
fi
gui=`which zenity`
vscan=`which clamscan`

#  Function to scan file(s)
scan_it()
{
        touch /tmp/scanresult
        if [ "$files_path" = "" ]; then
                #  Script can run from launchers, scripts other than from Nautilus, etc. (doesn't require $NAUTILUS_SCRIPT_CURRENT_URI)
                result=`$vscan -r "$files" --log=/tmp/scanresult | $gui --title "Virus Scanner" --progress \
                --text="Scanning $files..." --pulsate --auto-close; cat /tmp/scanresult` &> /dev/null
        else
                result=`$vscan -r "$files_path/$files" --log=/tmp/scanresult | $gui --title "Virus Scanner" --progress \
                --text="Scanning $files..." --pulsate --auto-close; cat /tmp/scanresult` &> /dev/null
        fi
        rm -f /tmp/scanresult &> /dev/null
        #  Feedback - if scan ended with errors or was terminated prematurely...
        if [ "$result" = "" ]; then
                err_text="Virus scan on $files terminated!"
                errors
        fi
        #  Feedback - if scan completed successfully...
        clean=`echo $result | grep 'FOUND'`
        #  Alter gui feedback according to presense/absense of virus(s) found during scan
        if [ "$clean" != "" ]; then
                $gui  --title "Virus Found!" --error --text="$result" &> /dev/null
        else
                $gui  --title "Virus Scan Results!" --info --text="$result" & &> /dev/null
        fi
}
#  Function to handle errors
errors()
{
        $gui  --title "Virus Scan Error!" --error --text="$err_text" &> /dev/null
        exit 1
}

#  Check for presense of required utilities
if [[ -x "$vscan" && -x "$gui" ]]; then
        scan_it
else
        if [ -x "$vscan" ]; then
                echo "Zenity was NOT found on the system!"
                exit 1
        else
                err_text="Clam Anti-virus was NOT found on the system!"
                errors
        fi
fi
exit 0

Enjoy!

**robert_pectol** · December 17th, 2005

Deleted!
I edited the original post to include the info contained in this one!

**ceti** · December 17th, 2005

Good, thanks!
It works even for folders.

**robert_pectol** · December 17th, 2005

You're welcome! I'm also working on a file encrypter/decrypter script for Nautilus. It uses GnuPG. If there's any interest in such a script, let me know and I'll dedicate some more time to it to get it done sooner.

**Rob2687** · December 17th, 2005

It gives and error...

'Error: Can't access' what ever file/folder I'm trying to scan

edit: It only does that when scanning files on the desktop.

**Bloot** · December 17th, 2005

Originally Posted by Rob2687

It gives and error...

'Error: Can't access' what ever file/folder I'm trying to scan

edit: It only does that when scanning files on the desktop.

Yep, appart from that issue it works like a charm.

Thanks for the howto.

**ceti** · December 17th, 2005

Originally Posted by robert_pectol

You're welcome! I'm also working on a file encrypter/decrypter script for Nautilus. It uses GnuPG. If there's any interest in such a script, let me know and I'll dedicate some more time to it to get it done sooner.

C'mon, let's see it....

**robert_pectol** · December 17th, 2005

Thanks for letting me know. It was a minor bug and I've addressed it with this new version. It seems to have been an issue with the script knowing the full path to the directories/files to be scanned, and getting that info from Nautilus. So, I've made a couple of changes to the script to do that. I've tested it here locally and so far, it appears to be fixed. Give it a try and let me know. If you can break it, I'd like to hear about it. That's how these things get ironed out! I've replaced the script on the original posting with the updated version. If the script didn't get pasted properly or you'd like to download it directly, it is available here:
http://rob.pectol.com/myscripts/vscan.sh.txt

**dcstar** · December 17th, 2005

Good stuff, thanks for doing it!

**bscbrit** · December 18th, 2005

Rob. Thank you.

Having looked at the code I realise that I could probably have written it myself - but I didn't and you did! Good effort. (perhaps I might even try some of my own)