pandebian-share

#!/bin/bash
# Copyright (c) 2011 Gregor Richards
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

# Environment variables:
# PanDebian directories
PANDEBIANS=""
# Shareable directories
SHAREABLE=""

msg() {
    zenity --info --text="$*"
}

warning() {
    zenity --warning --text="$*"
}

die() {
    zenity --error --text="$*"
    exit 1
}

question() {
    zenity --question --text="$1" --ok-label="$2" --cancel-label="$3"
    return $?
}

entry() {
    zenity --entry --text="$1" --entry-text="$2"
}

list() {
    MSG="$1"
    shift
    zenity --list --text="$MSG" --column= "$@"
}

save() {
    zenity --file-selection --save
}

savedir() {
    ( cd "$1"; zenity --file-selection --directory )
}


# Figure out the pandebian and shareable directories
for mnt in `cut -d' ' -f 2 /proc/mounts`
do
    if [ -e "$mnt/etc/debian_version" ]
    then
        # Seems to be Debian
        PANDEBIANS="$PANDEBIANS $mnt"

    elif expr "$mnt" : '/media/[^/]*$' > /dev/null 2> /dev/null
    then
        if [ "$mnt" != "/media/ram" ]
        then
            # Probably reasonable to share
            SHAREABLE="$SHAREABLE $mnt"
        fi

    fi
done

if [ ! "$PANDEBIANS" ]
then
    die 'I couldn'\''t find PanDebian. Please make sure you mount a PanDebian installation before using PanDebian Share.'
fi

if [ ! "$SHAREABLE" ]
then
    die 'I couldn'\''t find any shareable mounts. Sorry!'
fi

SHARE=`list 'Which mount would you like to share?' $SHAREABLE`

if [ ! "$SHARE" ]
then
    exit
fi

# Then share it
for mnt in $PANDEBIANS
do
    mkdir -p "$mnt$SHARE" || warning 'Failed to create '"$mnt/$SHARE"
    mount --bind "$SHARE" "$mnt$SHARE" || warning 'Failed to bind '"$SHARE"' to '"$mnt/$SHARE"
done

msg 'Done. '"$SHARE"' should now be accessible within PanDebian.'