phablet-network-setup

#!/bin/bash
# This program is free software: you can redistribute it and/or modify it
# under the terms of the the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
# PURPOSE.  See the applicable version of the GNU General Public
# License for more details.
#.
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Copyright (C) 2012 Canonical, Ltd.

export LC_ALL=C

usage() {
cat <<EOF
usage: $0 [OPTIONS]

Copies ACTIVE network manager connection into device

OPTIONS:
  -h	Show this message
  -s    Specify the serial of the device to install (see adb $ADBOPTS devices)
  -i    Install helper network packages (openssh-server, iw) in chroot
  -n    Select network file

EOF
}

ADBOPTS=""
OPTION_SSH=0
OPTION_NETWORK_FILE=""
CHROOTDIR="/data/ubuntu"
CHROOTCMD="chroot $CHROOTDIR"

while getopts "hin:s:" OPTION
do
    case $OPTION in
        h)
            usage
            exit 1
            ;;
        n)
            OPTION_NETWORK_FILE="$OPTARG"
            ;;
        i)
            OPTION_SSH=1
            ;;
        s)
            ADBOPTS="-s $OPTARG"
            ;;
        ?)
            usage
            exit
            ;;
    esac
done
shift $(($OPTIND - 1))

NETWORK_MANAGER=/etc/NetworkManager/system-connections
USER=phablet

is_flipped() {
    # Checks if the devices uses a flipped image
    #
    # @return: 0 if image is flipped 1 otherwise
    [ -n "$(adb $ADBOPTS shell "ls /etc/lsb-release 2>/dev/null")" ] && return 0
    return 1
}

get_user_id() {
    adb $ADBOPTS shell $CHROOTCMD /usr/bin/id -u $1 | tr -d '\r'
}

install_ssh_key() {
    HOME_DIR=$CHROOTDIR/home/$USER
    USER_ID=$(get_user_id $USER)
    adb $ADBOPTS push ~/.ssh/id_rsa.pub $HOME_DIR/.ssh/authorized_keys
    adb $ADBOPTS shell chown $USER_ID:$USER_ID $HOME_DIR/.ssh
    adb $ADBOPTS shell chown $USER_ID:$USER_ID $HOME_DIR/.ssh/authorized_keys
    adb $ADBOPTS shell chmod 700 $HOME_DIR/.ssh
    adb $ADBOPTS shell chmod 600 $HOME_DIR/.ssh/authorized_keys
}

find_active_network() {
    wireless_adapter="$(nmcli -t -f device,type dev | egrep wireless | cut -d: -f1)"
    network_active_uuid="$(nmcli -t -f name,uuid,devices,vpn con status | grep $wireless_adapter | egrep ":no$"| cut -d: -f2)"
    network_file=$(sudo grep "$network_active_uuid" $NETWORK_MANAGER/* | grep uuid | cut -d: -f1)

    if [ -z "$network_active_uuid" ]
    then
        echo "No active wifi network connection, exiting"
        exit 1
    fi
    echo "$network_file"
}

if is_flipped; then
    echo Ubuntu is root
    CHROOTDIR=""
    CHROOTCMD=""
fi

if [ -z "$OPTION_NETWORK_FILE" ]; then
    network_file=$(find_active_network)
else
    network_file=$OPTION_NETWORK_FILE
fi

if [ ! -f "$network_file" ]
then
    echo "Network connection file \"$network_file\" cannot be read"
    exit 1
fi

echo Network file is $network_file

TMP_FILE=$(mktemp)
sudo grep -v mac-address "$network_file" > $TMP_FILE

echo Provisioning network file to device
adb $ADBOPTS root
adb $ADBOPTS wait-for-device
target_network_file=$CHROOTDIR/$NETWORK_MANAGER/active_ws_connection.conf
adb $ADBOPTS push $TMP_FILE $target_network_file
adb $ADBOPTS shell "chmod 600 $target_network_file"

rm -f $TMP_FILE

echo
echo Network setup complete

if [ $OPTION_SSH -eq 1 ]; then
    TMP_FILE=$(mktemp)
    # Indentation is going to be ugly here
    cat > $TMP_FILE << 'EOF'
#!/bin/bash
export PATH="/sbin:/usr/sbin:/bin:/usr/bin" 
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get install --yes --quiet openssh-server iw
EOF

    echo Installing ssh
    nmcli_cmd="adb $ADBOPTS shell $CHROOTCMD $CHROOTDIR/usr/bin/nmcli"
    wait=0
    iface=$($nmcli_cmd -t -f devices con status | tr -d '\r')
    until [ -n "$iface" ] || [ $wait -eq 10 ]; do
        echo "Network not ready, sleeping"
        sleep $(( wait++ ))
        iface=$($nmcli_cmd -t -f devices con status | tr -d '\r')
    done
    if [ -z "$iface" ]; then
        echo "Network setup timed out"
        exit 1
    fi
    wait=0
    ip_data=$($nmcli_cmd -t dev list iface $iface | grep ADDRESS)
    until [ -n "$ip_data" ] || [ $wait -eq 10 ]; do
        echo "Network not ready, sleeping"
        sleep $(( wait++ ))
        ip_data=$($nmcli_cmd -t dev list iface $iface | grep ADDRESS)
    done
    if [ -z "$ip_data" ]; then
        echo "Network setup timed out"
        exit 1
    fi
    adb $ADBOPTS push $TMP_FILE $CHROOTDIR/$TMP_FILE
    adb $ADBOPTS shell chmod 755 $CHROOTDIR/$TMP_FILE
    adb $ADBOPTS shell $CHROOTCMD $CHROOTDIR/$TMP_FILE

    rm -f $TMP_FILE

    echo "Installing ssh keys"
    install_ssh_key

    echo
    echo openssh-server install complete, to connect execute
    echo adb $ADBOPTS forward tcp:PORT tcp:22
    echo with a proper PORT, e.g.\; 8888
    echo i.e.\; adb $ADBOPTS forward tcp:8888 tcp:22
    echo then ssh phablet@localhost -p 8888
fi