# DELIVERY TO MAILBOX
#
# The home_mailbox parameter specifies the optional pathname of a  
# mailbox file relative to a user's home directory. The default 
# mailbox file is /var/spool/mail/user or /var/mail/user.  Specify
# "Maildir/" for qmail-style delivery (the / is required).
# 
#home_mailbox = Mailbox
home_mailbox = Maildir/

tail -f /var/log/maillog

# apply alternative mailbox commands on a per user basis
mailbox_command_maps = hash:/etc/postfix/mailbox_commands

#
# mailbox command mappings
#
mypics /home/mypics/scripts/doimages.sh "$USER" "imageimport"

postmap mailbox_commands

#!/bin/sh
#
# arguments:
#  $1 message recipient
#   $2 folder to save attachments to
#
# test with:
# doimages.sh username folder < message
#

#
# script scope vars
#
mydebug=1
mydelete=1
mydivider="*******************************************"

#
# This script will be called by postfix using the receiving user rights.
# This has an effective umask of 0177.
# We need group access so umask accordingly.
#
umask 0002

# message log
msglog="/home/websys/postfix-messages.log"

#
# function mylog
# 
# $1 log text
# $2 exit status
#
mylog()
{
	echo "$(date) ${1:-missing}" >> $msglog

	# exit with given status code
	if [ $# -ge "2" ]; then
		echo "quitting" >> $msglog
		exit $2
	fi
}

#log session
mylog "$mydivider"
 
# redirect stdout and std err to append to file (debug only)
if [ $mydebug -eq 0 ]; then
	exec >> $msglog 2>&1
fi

# validate parameters
if [ $# -ne "2" ]; then
	mylog "invalid parameter count: ${#}" 0
fi

mylog "message rxd for user $1"

# form message path
msgpath_root="/home/websys"
mylog "root path is ${msgpath_root}"
targetdir=$2
mylog "target folder is $targetdir"
msgpath="$msgpath_root/$targetdir"

#change to root folder
if ! cd $msgpath_root ; then mylog "cannot cd to ${msgpath_root}" 0 ; fi

#make target dir and intermediates if required
if ! mkdir -p $targetdir ; then mylog "cannot make dir ${targetdir}" 0 ; fi
if ! cd $targetdir ; then mylog "cannot access ${targetdir}" 0 ; fi

# make message dir using user name ($1), process id and unix time in seconds since 1970
# make intermediate directories if required
msgdir="postfix-msg-$1-$$-$(date +%s)"
if ! mkdir $msgdir ; then mylog "cannot make ${msgdir}" 0 ; fi
if ! cd $msgdir ; then mylog "cannot cd to ${msgdir}" 0 ; fi

#extend path
msgpath="$msgpath/$msgdir"
delpath=$msgpath	#delete path here

# read message from std in and write to file
msgfile="${msgpath}/message"
cat > $msgfile

# check	exit status of last command
if [ "$?" -ne "0" ]; then
    	mylog "could not read message from stdin to ${msgfile}" 0
fi

# decode all attachments encoded within the message
uudeview -i $msgfile 2>>$msglog

# check exit status of last command
if [ "$?" -ne "0" ]; then
    	mylog "error decoding attachments in ${msgfile}" 0
fi

# split on linebreak so that filenames with white space get handled correctly
SAVEIFS=$IFS
IFS=$(echo -en "\n\b")

# iterate over dir and unzip any archives
for f in *.zip
do 
	mylog "unzipping ${f}" 
	unzip $f
	
	# check exit status of last command
	if [ "$?" -ne "0" ]; then
    	mylog "error unzipping attachments in ${msgfile}" 0
	fi
done
IFS=$SAVEIFS

# access image import URL to process images in message dir.
# the path may be accessed only by authenticated users hence the login script
# rather than calling the path directly 
importURL="http://www.example.com/login.php?user=admin&passwd=admin&path=import"
wget $importURL 2>>$msglog

# check	exit status of last command
if [ "$?" -ne "0" ]; then
    mylog "error occurred calling ${importURL}" 0
fi

# flag delete the message directory if required
#mydelete=0

# remove our message directory
if [ "$mydelete" -eq "0" ]; then

	cd $msgpath_root
	rm -r $delpath

	# check	exit status of last command
	if [ "$?" -ne "0" ]; then
    	mylog "dir not removed $delpath"
    else
    	mylog "dir removed $delpath"
	fi
fi

mylog "message import complete" 

# tell postfix all OK
exit 0