#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Mumble application
#
# License
# =======
#
# Copyright (C) 2014-2016 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

VARIANTS='full full-vim chat'

# Password used for mumble server
MUMBLE_SERVER_PASSWORD=
# Port on which mumble server listens
MUMBLE_PORT=64738

# Location of mumble database and configuration
MUMBLE_DATABASE="mumble-server.sqlite"
MUMBLE_CONFIG_FILE="mumble-server.ini"

mumble_variables=(MY_USERNAME
                  MUMBLE_PORT
                  MUMBLE_SERVER_PASSWORD
                  ONION_ONLY
                  ADMIN_USERNAME)

function install_interactive_mumble {
    echo -n ''
    APP_INSTALLED=1
}

function change_password_mumble {
    echo -n ''
}

function reconfigure_mumble {
    echo -n ''
}

function upgrade_mumble {
    echo -n ''
}

function backup_local_mumble {
    if [ -f /etc/mumble-server.ini ]; then
        echo $"Backing up Mumble settings"
        temp_backup_dir=/root/tempmumblebackup
        if [ ! -d $temp_backup_dir ]; then
            mkdir -p $temp_backup_dir
        fi
        cp -f /etc/mumble-server.ini $temp_backup_dir
        cp -f /var/lib/mumble-server/mumble-server.sqlite $temp_backup_dir
        backup_directory_to_usb $temp_backup_dir mumble
        echo $"Mumble settings backup complete"
    fi
}

function restore_local_mumble {
    if [ -d $USB_MOUNT/backup/mumble ]; then
        echo $"Restoring mumble settings"
        temp_restore_dir=/root/tempmumble
        function_check restore_directory_from_usb
        restore_directory_from_usb $temp_restore_dir mumble
        cp -f $temp_restore_dir/home/$ADMIN_USERNAME/tempbackup/mumble-server.ini /etc/
        if [ ! "$?" = "0" ]; then
            rm -rf $temp_restore_dir
            function_check set_user_permissions
            set_user_permissions
            function_check backup_unmount_drive
            backup_unmount_drive
            exit 3679
        fi
        cp -f $temp_restore_dir/home/$ADMIN_USERNAME/tempbackup/mumble-server.sqlite /var/lib/mumble-server/
        if [ ! "$?" = "0" ]; then
            rm -rf $temp_restore_dir
            function_check set_user_permissions
            set_user_permissions
            function_check backup_unmount_drive
            backup_unmount_drive
            exit 276
        fi
        rm -rf $temp_restore_dir
        cp /etc/ssl/certs/mumble* /var/lib/mumble-server
        cp /etc/ssl/private/mumble* /var/lib/mumble-server
        chown -R mumble-server:mumble-server /var/lib/mumble-server
        service mumble-server restart
    fi
}

function backup_remote_mumble {
    if [ -f /etc/mumble-server.ini ]; then
        echo $"Backing up mumble settings"
        if [ ! -d /root/tempmumblebackup ]; then
            mkdir -p /root/tempmumblebackup
        fi
        cp -f /etc/mumble-server.ini /root/tempmumblebackup
        cp -f /var/lib/mumble-server/mumble-server.sqlite /root/tempmumblebackup
        backup_directory_to_friend /root/tempmumblebackup mumble
        echo $"Backup of mumble settings complete"
    fi
}

function restore_remote_mumble {
    if [ -d $SERVER_DIRECTORY/backup/mumble ]; then
        echo $"Restoring Mumble settings"
        temp_restore_dir=/root/tempmumble
        function_check restore_directory_from_friend
        restore_directory_from_friend $temp_restore_dir mumble
        cp -f $temp_restore_dir/home/$ADMIN_USERNAME/tempbackup/mumble-server.ini /etc/
        if [ ! "$?" = "0" ]; then
            rm -rf $temp_restore_dir
            exit 7823
        fi
        cp -f $temp_restore_dir/home/$ADMIN_USERNAME/tempbackup/sipwitch.conf /etc/sipwitch.conf
        if [ ! "$?" = "0" ]; then
            rm -rf $temp_restore_dir
            exit 7823
        fi
        cp -f $temp_restore_dir/home/$ADMIN_USERNAME/tempbackup/mumble-server.sqlite /var/lib/mumble-server/
        if [ ! "$?" = "0" ]; then
            rm -rf $temp_restore_dir
            exit 276
        fi
        rm -rf $temp_restore_dir
        cp /etc/ssl/certs/mumble* /var/lib/mumble-server
        cp /etc/ssl/private/mumble* /var/lib/mumble-server
        chown -R mumble-server:mumble-server /var/lib/mumble-server
        service mumble-server restart
        echo $"Restore of Mumble complete"
    fi
}

function remove_mumble {
    apt-get -y remove --purge mumble-server
    if [[ $ONION_ONLY == "no" ]]; then
        iptables -D INPUT -p udp --dport $MUMBLE_PORT -j ACCEPT
        iptables -D INPUT -p tcp --dport $MUMBLE_PORT -j ACCEPT
        function_check save_firewall_settings
        save_firewall_settings
    fi
    if [ -f /etc/mumble-server.ini ]; then
        rm /etc/mumble-server.ini
    fi
    function_check remove_onion_service
    remove_onion_service mumble ${MUMBLE_PORT}
    sed -i '/mumble/d' $COMPLETION_FILE
}

function get_mumble_server_password {
    if [ -f /home/$MY_USERNAME/README ]; then
        if grep -q "Mumble server password" /home/$MY_USERNAME/README; then
            if [ ! $MUMBLE_SERVER_PASSWORD ]; then
                MUMBLE_SERVER_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Mumble server password" | awk -F ':' '{print $2}' | sed 's/^ *//')
            fi
        fi
    fi
}

function configure_firewall_for_mumble {
    if [[ $(is_completed $FUNCNAME) == "1" ]]; then
        return
    fi
    if [[ $ONION_ONLY != "no" ]]; then
        return
    fi
    iptables -A INPUT -p udp --dport $MUMBLE_PORT -j ACCEPT
    iptables -A INPUT -p tcp --dport $MUMBLE_PORT -j ACCEPT
    function_check save_firewall_settings
    save_firewall_settings

    OPEN_PORTS+=("Mumble   $MUMBLE_PORT")
    mark_completed $FUNCNAME
}

function install_mumble {
    apt-get -y install mumble-server

    function_check get_mumble_server_password
    get_mumble_server_password
    if [ ! $MUMBLE_SERVER_PASSWORD ]; then
        if [ -f $IMAGE_PASSWORD_FILE ]; then
            MUMBLE_SERVER_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
        else
            MUMBLE_SERVER_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
            if [ ${#MUMBLE_SERVER_PASSWORD} -lt $MINIMUM_PASSWORD_LENGTH ]; then
                MUMBLE_SERVER_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
            fi
        fi
    fi

    # Make an ssl cert for the server
    if [ ! -f /etc/ssl/certs/mumble.dhparam ]; then
        ${PROJECT_NAME}-addcert -h mumble --dhkey $DH_KEYLENGTH
        function_check check_certificates
        check_certificates mumble
    fi

    # Check that the cert was created
    if [ ! -f /etc/ssl/certs/mumble.crt ]; then
        echo $'mumble server certificate not created'
        exit 57892
    fi
    if [ ! -f /etc/ssl/private/mumble.key ]; then
        echo $'mumble server key not created'
        exit 57893
    fi
    if [ ! -d /var/lib/mumble-server ]; then
        mkdir /var/lib/mumble-server
    fi
    cp /etc/ssl/certs/mumble.* /var/lib/mumble-server
    cp /etc/ssl/private/mumble.key /var/lib/mumble-server
    chown -R mumble-server:mumble-server /var/lib/mumble-server

    sed -i "s|welcometext=.*|welcometext=\"<br />Welcome to $DEFAULT_DOMAIN_NAME <b>mumble</b>.<br />Chat freely!<br />\"|g" /etc/mumble-server.ini

    if [[ $MUMBLE_SERVER_PASSWORD ]]; then
        sed -i "s|serverpassword=.*|serverpassword=$MUMBLE_SERVER_PASSWORD|g" /etc/mumble-server.ini
    fi

    sed -i 's|#autobanAttempts.*|autobanAttempts = 10|g' /etc/mumble-server.ini
    sed -i 's|#autobanTimeframe.*|autobanTimeframe = 120|g' /etc/mumble-server.ini
    sed -i 's|#autobanTime.*|autobanTime = 300|g' /etc/mumble-server.ini
    sed -i 's|#sendversion=.*|sendversion=False|g' /etc/mumble-server.ini
    sed -i 's|sendversion=.*|sendversion=False|g' /etc/mumble-server.ini
    if ! grep -q "allowping" /etc/mumble-server.ini; then
        echo 'allowping=False' >> /etc/mumble-server.ini
    fi
    sed -i 's|allowping=.*|allowping=False|g' /etc/mumble-server.ini
    sed -i 's|#sslCert=.*|sslCert=/var/lib/mumble-server/mumble.crt|g' /etc/mumble-server.ini
    sed -i 's|#sslKey=.*|sslKey=/var/lib/mumble-server/mumble.key|g' /etc/mumble-server.ini
    sed -i 's|#certrequired=.*|certrequired=True|g' /etc/mumble-server.ini
    sed -i 's|users=100|users=10|g' /etc/mumble-server.ini
    sed -i 's|#channelnestinglimit=10|channelnestinglimit=10|g' /etc/mumble-server.ini
    sed -i 's|#textmessagelength=.*|textmessagelength=1000|g' /etc/mumble-server.ini
    sed -i 's|textmessagelength=.*|textmessagelength=1000|g' /etc/mumble-server.ini
    sed -i 's|#imagemessagelength=.*|imagemessagelength=131072|g' /etc/mumble-server.ini
    sed -i 's|#allowhtml=.*|allowhtml=False|g' /etc/mumble-server.ini
    sed -i 's|allowhtml=.*|allowhtml=False|g' /etc/mumble-server.ini
    sed -i "s|port=.*|port=${MUMBLE_PORT}|g" /etc/mumble-server.ini

    MUMBLE_ONION_HOSTNAME=$(add_onion_service mumble ${MUMBLE_PORT} ${MUMBLE_PORT})

    systemctl restart mumble-server

    if ! grep -q $"Mumble Server" /home/$MY_USERNAME/README; then
        echo '' >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        echo $'Mumble Server' >> /home/$MY_USERNAME/README
        echo '=============' >> /home/$MY_USERNAME/README
        echo $"Mumble onion domain:$MUMBLE_ONION_HOSTNAME" >> /home/$MY_USERNAME/README
        echo $'Mumble server username: mumble-server' >> /home/$MY_USERNAME/README
        echo $"Mumble server password: $MUMBLE_SERVER_PASSWORD" >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        echo $'To connect to the Mumble server use your username and the server password shown above.' >> /home/$MY_USERNAME/README
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    fi

    function_check configure_firewall_for_mumble
    configure_firewall_for_mumble
    APP_INSTALLED=1
}

# NOTE: deliberately no exit 0