Mailx and Clamav

[Oko]

Is it possible to pipe messages and in particular attachments through clamscan while fetching them from IMAP server with Mailx? I looking for something like using Clamav with Getmail. It seems to me that I could pipe messages from the command line with something as simple as

& pi message_number clamscan

but I end up scanning dot files from.

[TerryP]

I don't have them running on the same machine at the moment, so I can't run a proper test, but like many programs clamscan should understand '-' as scanning its standard input.

I tried using cat and head as a test on my OpenBSD machine:

& pi 1 cat
 ... output for message number 1 ...
&  pi 1 head -n 3
Referencing before 1
& pi 1 /tmp/filterscript
 ... top 3 lines of message number 1 ...

The test was done using the mailx util on an OpenBSD 4.4-release box. Perhaps nailx/heirloom mailx may be different (or I'm just being stupid) but it seems to have an issue about executing a command > 1 word. If needed you can always create a filter script to supply any needed arguments to clamscan.

[Oko]

Thanks Tarry,

You really helped me. This is the proper command.

Pi message_number "clamscan -"

Or you can probably use the following option

Pi message_number "clamscan --scan-mail=yes  -"

Note that you must use Pi (not pi) in order to pipe all parts of message including attachments.

I will post my .nailrc when I check man pages.

[Oko]

The real way to do it is by scripting a nice folder-hook. It looks to me that would be very easy to write a hook which would also pipe attachments through file command thereby determining the their true nature (most email clients have a serious problems with it) and then strip the message from binary attachments for instance.