localmb2md



#!/bin/sh
#
# /usr/local/sbin/adduser.local
# Copyright 2005-2006 Jonas Smedegaard <dr@jones.dk>
#
# $Id: localmb2md,v 1.7 2006-03-24 14:03:00 jonas Exp $
#
# Convert user account from mailboxes below /var/mail/ and ~/mail/ to
# maildirs below ~/Maildir/ .
#
# If from a different account, execute it like this:
#
#     su -s /bin/sh -c localmb2md - <user>
#
# FIXME: Make sure no MUAs or pop/imap daemons are running
# TODO: Add --help (and perhaps --force) options
#

set -e

for prg in mb2md procmail mail-lock mail-touchlock mail-unlock; do
    if [ ! -f "/usr/bin/$prg" ]; then
        echo "ERROR: $prg not installed!"
        exit 1
    fi
done

# Make sure Maildir is used if procmailrc exists already
if [ -f ~/.procmailrc ] && egrep -v -q '^DEFAULT=\$HOME/Maildir/$' ~/.procmailrc; then
    echo 'ERROR: non-Maildir-aware ~/.procmailrc exists already.'
    echo '  Please edit manually to include the following line:'
    echo
    echo '      DEFAULT=$HOME/Maildir/'
    echo
    echo '  Make sure other rules use Maildirs too, if needed.'
    exit 1
fi

# Avoid incoming mail while messing with INBOX
if [ -e "/var/mail/$USER" ]; then
    echo "Locking INBOX"
    mail-lock
    mail-touchlock &
    # Save the PID of the mail-touchlock process
    BADGER="$!"

    # Convert INBOX and purge if not empty
    if [ -s "/var/mail/$USER" ]; then
        mb2md -m
        echo -n '' > "/var/mail/$USER"
    else
        # Create Maildir for INBOX if not there already
        mkdir -p ~/Maildir/cur ~/Maildir/new ~/Maildir/tmp
        chmod -R u=rw,go=,u+X ~/Maildir
    fi
    # Reroute future incoming mail to Maildir
    echo 'DEFAULT=$HOME/Maildir/' > ~/.procmailrc

    # Allow incoming mail again
    kill "${BADGER}"
    mail-unlock
    echo "INBOX unlocked again"
fi

# Convert secondary mailboxes
if [ -d ~/mail ]; then
    mv ~/mail ~/mail.abandoned
    mb2md -R -s mail.abandoned
    # Grab dovecot subscriptions
    if [ -f ~/mail/.subscriptions ]; then
        mv ~/mail/.subscriptions ~/Maildir/.subscriptions
    # ...or UW-imap ones
    elif [ -f ~/.mailboxlist ]; then
        mv ~/.mailboxlist ~/Maildir/.subscriptions
    fi
fi