A shellscript to migrate maildir data (Courier/Dovecot) between different web panels (H-Sphere, ISP Manager and cPanel).

mm.sh

#!/bin/sh
#
#   Maildir Migrator v0.5.1
#   Last updated: 25/10/2011
#
#   Copyright (C) 2011 Quetzy Garcia <quetzyg@altek.org>
#

##################################
#     GLOBAL VARIABLES BEGIN     #
##################################

SCRIPT_NAME="Maildir Migrator"
SCRIPT_VER="0.5.1"

account=""
mdir_src_dir_chk=0
mdir_src=""
mdir_dst=""
mdir_src_dir=""
mdir_dst_dir=""
domain=""
xdir=""
dry_run=0

# whitespace filler
wsf="{!}"

##################################
#      GLOBAL VARIABLES END      #
##################################

#
# Just die
#
die()
{
    echo "$@"
    exit
}

#
# Check for privileges
#
check_root()
{
    if [ $(whoami) != "root" ]; then
        die "You must be root to run this script!"
    fi
}

#
# Script usage
#
usage()
{
    echo "Usage: $0 -s <source> [-a <account>] [-d <domain>] [-x <H-Sphere extra domain directory>] [-t]"
    echo ""
    echo "Options:"
    echo "-a    set panel account (username)."
    echo "-s    set the maildir source."
    echo "-d    set a different domain to migrate to."
    echo "-x    set the H-Sphere extra domain directory."
    echo "-t    set test mode (no changes are made)."
    die  "-h    print this help."
}

#
# Configure paths and other stuff
#
configure()
{
    if [ -z $mdir_src ]; then
        usage
    fi

    if [ ! -d $mdir_src ]; then
        die "[ FAIL ]: '$mdir_src' is not a directory!"
    fi

    if [ $dry_run -eq 1 ]; then
        echo "[ INFO ]: Script running in test mode"
    fi

    # detect maildir source
    for mbox in $(ls $mdir_src); do
        if [ -d $mdir_src$mbox/Maildir/cur/ ]; then
            echo "[ INFO ]: Maildir source: H-Sphere"
            mdir_src_dir="/Maildir/"
            mdir_src_dir_chk=1
            break
        fi

        if [ -d $mdir_src$mbox/.maildir/cur/ ]; then
            echo "[ INFO ]: Maildir source: ISP Manager"
            mdir_src_dir="/.maildir/"
            mdir_src_dir_chk=1
            break
        fi

        if [ -d $mdir_src$mbox/cur/ ]; then
            echo "[ INFO ]: Maildir source: CPanel"
            mdir_src_dir="/"
            mdir_src_dir_chk=1
            break
        fi
    done

    if [ $mdir_src_dir_chk -eq 0 ]; then
        die "[ FAIL ]: Sorry, could not detect the maildir source!"
    fi

    # if not specified, get domain from path
    [ -z $domain ] && domain=$(basename $mdir_src)

    # H-Sphere
    if [ -z $account ]; then
        echo "[ WARN ]: No account has been set, assuming we're on H-Sphere..."

        if [ -z $xdir ]; then
            mdir_dst="/hsphere/local/var/vpopmail/domains/$domain/"
        else
            mdir_dst="/hsphere/local/var/vpopmail/domains/$xdir/$domain/"
        fi

        mdir_dst_dir="/Maildir/"

        if [ -d $mdir_dst ]; then
            echo "[ INFO ]: Maildir destination: H-Sphere"
        else
            die "[ FAIL ]: Maildir destination '$mdir_dst' not found! Try the -x flag to set the H-Sphere extra domain directory"
        fi

    # ISP Manager
    elif [ -d "/var/www/$account/data/email/$domain/" ]; then
        echo "[ INFO ]: Maildir destination: ISP Manager"
        mdir_dst="/var/www/$account/data/email/$domain/"
        mdir_dst_dir="/.maildir/"

    # CPanel
    elif [ -d "/home/$account/mail/$domain/" ]; then
        echo "[ INFO ]: Maildir destination: CPanel"
        mdir_dst="/home/$account/mail/$domain/"
        mdir_dst_dir="/"

    else
        die "[ FAIL ]: Could not detect panel, invalid account/domain?"
    fi
}

#
# Get hidden directories
#
get_hidden_dirs()
{
    hd=""

    if [ -d $1 ]; then
        for dir in $1.*; do
            # remove whitespace to prevent usage as a field separator
            suffix="$(basename "$dir" | sed 's/ /$wsf/g')"

            # get every hidden directory except '.' and '..'
            if [ -d "$dir" ] && [ "$suffix" != "." ] && [ "$suffix" != ".." ]; then
                hd=$hd" $suffix/"
            fi
        done
    fi

    echo "$hd"
}

#
# Migrate mailbox content
#
migrate()
{
    for mbox in $(ls $mdir_src); do
        if [ -d $mdir_dst$mbox ]; then
            usr=$(ls -ld $mdir_dst$mbox | awk -F' ' '{print $3}')
            grp=$(ls -ld $mdir_dst$mbox | awk -F' ' '{print $4}')
            run_chown=0

            for mid in "" $(get_hidden_dirs $mdir_src$mbox$mdir_src_dir); do
                for top in "cur/" "new/" "tmp/"; do

                    # put the whitespace back as it was
                    mid=$(echo $mid | sed 's/$wsf/ /g')

                    # make paths
                    src="$mdir_src$mbox$mdir_src_dir$mid$top"
                    dst="$mdir_dst$mbox$mdir_dst_dir$mid$top"

                    if [ -d "$src" ]; then
                        if [ -d "$dst" ] || [ ! -z "$mid" ]; then
                            echo "[ INFO ]: Moving: '$src' -> '$dst'"

                            if [ $dry_run -eq 0 ]; then
                                mkdir -p "$dst"

                                mv -f "$src"* "$dst" > /dev/null 2>&1
                            fi

                            run_chown=1
                        else
                            echo "[ WARN ]: Skipping '$src'..."
                        fi
                    fi
                done
            done

            if [ $run_chown -eq 1 ]; then
                echo "[ INFO ]: Setting file ownership to '$usr:$grp' on '$mdir_dst$mbox'"

                if [ $dry_run -eq 0 ]; then
                    chown -R $usr:$grp $mdir_dst$mbox
                fi
            fi
        fi
    done

    die "[ INFO ]: Done!"
}

#
# Parse script parameters
#
while getopts "a:s:d:x:th" flag; do
    case $flag in
        "a")
            account=$OPTARG
            ;;
        "s")
            mdir_src=$OPTARG
            ;;
        "d")
            domain=$OPTARG
            ;;
        "x")
            xdir=$OPTARG
            ;;
        "t")
            dry_run=1
            ;;
        "h")
            usage
            ;;
        *)
            usage
            ;;
    esac
done

#
# Show script info
#
echo "$SCRIPT_NAME - v$SCRIPT_VER"
echo ""

check_root

configure

migrate