#!/bin/sh
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 2 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright (C) 2012-2017 Aleksander Morgado <aleksander@aleksander.es>
print_usage ()
{
echo "usage: $0 [OPTIONS] [DEVICE] [COMMAND]"
}
help ()
{
echo "Usage: qmi-network [OPTIONS] [DEVICE] [COMMAND]"
echo
echo "Simple network management of QMI devices"
echo
echo "Commands:"
echo " start Start network connection"
echo " stop Stop network connection"
echo " status Query network connection status"
echo
echo "Options:"
echo " --profile=[PATH] Use the profile in the specified path"
echo " --help Show help options"
echo " --version Show version"
echo
echo "Notes:"
echo
echo " 1) [DEVICE] is given as the full path to the cdc-wdm character"
echo " device, e.g.:"
echo " /dev/cdc-wdm0"
echo
echo " 2) The qmi-network script requires a profile to work. Unless"
echo " explicitly specified with \`--profile', the file is assumed to"
echo " be available in the following path:"
echo " /etc/qmi-network.conf"
echo
echo " 3) The APN to use should be configured in the profile, in the"
echo " following way (e.g. assuming APN is called 'internet'):"
echo " APN=internet"
echo
echo " 4) Optional APN user/password strings may be given in the following"
echo " way:"
echo " APN_USER=user"
echo " APN_PASS=password"
echo
echo " 5) If you want to instruct the qmi-network script to use the"
echo " qmi-proxy setup, you can do so by configuring the following line"
echo " in the profile:"
echo " PROXY=yes"
echo
echo " 6) Once the qmi-network script reports a successful connection"
echo " you still need to run a DHCP client on the associated WWAN network"
echo " interface."
echo
}
version ()
{
echo "qmi-network @VERSION@"
echo "Copyright (C) 2013-2018 Aleksander Morgado"
echo "License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>"
echo "This is free software: you are free to change and redistribute it."
echo "There is NO WARRANTY, to the extent permitted by law."
echo
}
# Basic options
if [ $# -lt 2 ]; then
if [ "$1" = "--help" ]; then
help
exit 0
elif [ "$1" = "--version" ]; then
version
exit 0
fi
echo "error: missing arguments" 1>&2
print_usage
exit 255
fi
# Defaults
PROFILE_FILE=/etc/qmi-network.conf
# Device + Command with options; options given first
while [ $# -gt 2 ]; do
OPT="$1"
shift
case "$OPT" in
"--")
break 2;;
"--profile")
if [ $# -gt 2 ]; then
PROFILE_FILE="$1"
shift
else
PROFILE_FILE=""
fi
;;
"--profile="*)
PROFILE_FILE="${OPT#*=}";;
*)
echo >&2 "Invalid option: $OPT"
print_usage
exit 255;;
esac
done
if [ -z "$PROFILE_FILE" ]; then
echo "error: empty profile path given" 1>&2
print_usage
exit 255
fi
if [ $# -ne 2 ] || [ "$1" = '--*' ] || [ "$2" = '--*' ]; then
echo "error: missing arguments" 1>&2
print_usage
exit 255
fi
DEVICE=$1
COMMAND=$2
STATE_FILE=/tmp/qmi-network-state-`basename $DEVICE`
load_profile ()
{
if [ -f "$PROFILE_FILE" ]; then
echo "Loading profile at ${PROFILE_FILE}..."
. $PROFILE_FILE
if [ -n "$APN" ]; then
echo " APN: $APN"
else
echo " APN: unset"
fi
if [ -n "$APN_USER" ]; then
echo " APN user: $APN_USER"
else
echo " APN user: unset"
fi
if [ -n "$APN_PASS" ]; then
echo " APN password: $APN_PASS"
else
echo " APN password: unset"
fi
if [ "$PROXY" = "yes" ]; then
echo " qmi-proxy: $PROXY"
PROXY_OPT='--device-open-proxy'
else
echo " qmi-proxy: no"
fi
else
echo "Profile at '$PROFILE_FILE' not found..."
fi
}
save_state ()
{
KEY=$1
VAL=$2
echo "Saving state at ${STATE_FILE}... ($KEY: $VAL)"
if [ -f "$STATE_FILE" ]; then
PREVIOUS=`cat $STATE_FILE`
PREVIOUS=`echo "$PREVIOUS" | grep -v $KEY`
if [ -n "$PREVIOUS" ]; then
echo $PREVIOUS > $STATE_FILE
else
rm $STATE_FILE
fi
fi
if [ -n "$VAL" ]; then
echo "$KEY=\"$VAL\"" >> $STATE_FILE
fi
}
load_state ()
{
if [ -f "$STATE_FILE" ]; then
echo "Loading previous state from ${STATE_FILE}..."
. $STATE_FILE
if [ -n "$CID" ]; then
echo " Previous CID: $CID"
fi
if [ -n "$PDH" ]; then
echo " Previous PDH: $PDH"
fi
fi
}
clear_state ()
{
echo "Clearing state at ${STATE_FILE}..."
rm -f $STATE_FILE
}
setup_data_format ()
{
RUN_WDA=0
# Read link layer protocol setup in the device
DEVICE_DATA_FORMAT_CMD="qmicli -d $DEVICE --wda-get-data-format $PROXY_OPT"
echo "Checking data format with '$DEVICE_DATA_FORMAT_CMD'..."
if [ -n "$QMIDEBUG" ]; then
DEVICE_DATA_FORMAT_OUT="\
[/dev/cdc-wdm1] Successfully got data format
QoS flow header: no
Link layer protocol: '802-3'
Uplink data aggregation protocol: 'disabled'
Downlink data aggregation protocol: 'disabled'
NDP signature: '0'
Uplink data aggregation max size: '0'
Downlink data aggregation max size: '0'"
else
DEVICE_DATA_FORMAT_OUT=`$DEVICE_DATA_FORMAT_CMD`
fi
DEVICE_LLP=`echo "$DEVICE_DATA_FORMAT_OUT" | sed -n "s/.*Link layer protocol:.*'\(.*\)'.*/\1/p"`
if [ -z "$DEVICE_LLP" ]; then
echo "Device link layer protocol not retrieved: WDA unsupported" 1>&2
return
fi
if [ "$DEVICE_LLP" != "802-3" -a "$DEVICE_LLP" != "raw-ip" ]; then
echo "Device link layer protocol not retrieved: unexpected value reported: '$DEVICE_LLP'" 1>&2
return
fi
echo "Device link layer protocol retrieved: $DEVICE_LLP"
# Read link layer protocol setup in the kernel
EXPECTED_DATA_FORMAT_CMD="qmicli -d $DEVICE --get-expected-data-format"
echo "Getting expected data format with '$EXPECTED_DATA_FORMAT_CMD'..."
if [ -n "$QMIDEBUG" ]; then
EXPECTED_LLP="raw-ip"
else
EXPECTED_DATA_FORMAT_OUT=`$EXPECTED_DATA_FORMAT_CMD`
if [ $? -eq 0 ]; then
EXPECTED_LLP=$EXPECTED_DATA_FORMAT_OUT
echo "Expected link layer protocol retrieved: $EXPECTED_LLP"
else
echo "Expected link layer protocol not retrieved: kernel unsupported" 1>&2
EXPECTED_LLP="802-3"
# The kernel doesn't support expected data format, so we change the
# device data format instead
RUN_WDA=1
fi
fi
if [ "$EXPECTED_LLP" != "802-3" -a "$EXPECTED_LLP" != "raw-ip" ]; then
echo "Expected link layer protocol not retrieved: unexpected value reported: '$EXPECTED_LLP'" 1>&2
return
fi
if [ "$DEVICE_LLP" = "$EXPECTED_LLP" ]; then
echo "Device and kernel link layer protocol match: $DEVICE_LLP"
return
fi
if [ $RUN_WDA -eq 1 ]; then
DEVICE_DATA_FORMAT_SET_CMD="qmicli -d $DEVICE --wda-set-data-format=$EXPECTED_LLP $PROXY_OPT"
echo "Updating device link layer protocol with '$DEVICE_DATA_FORMAT_SET_CMD'..."
if [ -n "$QMIDEBUG" ]; then
DEVICE_DATA_FORMAT_SET_OUT="\
[/dev/cdc-wdm1] Successfully set data format
QoS flow header: no
Link layer protocol: '802-3'
Uplink data aggregation protocol: 'disabled'
Downlink data aggregation protocol: 'disabled'
NDP signature: '0'
Downlink data aggregation max datagrams: '0'
Downlink data aggregation max size: '0'"
else
DEVICE_DATA_FORMAT_SET_OUT=`$DEVICE_DATA_FORMAT_SET_CMD`
fi
LLP=`echo "$DEVICE_DATA_FORMAT_SET_OUT" | sed -n "s/.*Link layer protocol:.*'\(.*\)'.*/\1/p"`
if [ -z "$LLP" ]; then
echo "Error updating Device link layer protocol" 1>&2
else
echo "New device link layer protocol retrieved: $LLP"
fi
else
EXPECTED_DATA_FORMAT_SET_CMD="qmicli -d $DEVICE --set-expected-data-format=$DEVICE_LLP"
echo "Updating kernel link layer protocol with '$EXPECTED_DATA_FORMAT_SET_CMD'..."
EXPECTED_DATA_FORMAT_SET_OUT=`$EXPECTED_DATA_FORMAT_SET_CMD`
if [ $? -eq 0 ]; then
echo "Kernel link layer protocol updated"
else
echo "Error updating kernel link layer protocol " 1>&2
fi
fi
}
# qmicli -d /dev/cdc-wdm0 --wds-start-network --client-no-release-cid
# [/dev/cdc-wdm0] Network started
# Packet data handle: 3634026241
# [/dev/cdc-wdm0] Client ID not released:
# Service: 'wds'
# CID: '80'
start_network ()
{
if [ -n "$CID" ]; then
USE_PREVIOUS_CID="--client-cid=$CID"
fi
if [ -n "$PDH" ]; then
echo "error: cannot re-start network, PDH already exists" 1>&2
exit 3
fi
setup_data_format
if [ -n "$APN" ]; then
START_NETWORK_ARGS="apn='$APN'"
if [ -n "$APN_USER" ]; then
START_NETWORK_ARGS="${START_NETWORK_ARGS},username='$APN_USER'"
if [ -n "$APN_PASS" ]; then
START_NETWORK_ARGS="${START_NETWORK_ARGS},password='$APN_PASS'"
fi
fi
fi
START_NETWORK_CMD="qmicli -d $DEVICE --wds-start-network=$START_NETWORK_ARGS $USE_PREVIOUS_CID --client-no-release-cid $PROXY_OPT"
echo "Starting network with '$START_NETWORK_CMD'..."
if [ -n "$QMIDEBUG" ]; then
START_NETWORK_OUT="\
[/dev/cdc-wdm0] Network started
Packet data handle: '3634026241'
[/dev/cdc-wdm0] Client ID not released:
Service: 'wds'
CID: '80'"
else
START_NETWORK_OUT=`$START_NETWORK_CMD`
fi
# Save the new CID if we didn't use any before
if [ -z "$CID" ]; then
CID=`echo "$START_NETWORK_OUT" | sed -n "s/.*CID.*'\(.*\)'.*/\1/p"`
if [ -z "$CID" ]; then
echo "error: network start failed, client not allocated" 1>&2
exit 1
else
save_state "CID" $CID
fi
fi
PDH=`echo "$START_NETWORK_OUT" | sed -n "s/.*handle.*'\(.*\)'.*/\1/p"`
if [ -z "$PDH" ]; then
echo "error: network start failed, no packet data handle" 1>&2
# Cleanup the client
qmicli -d "$DEVICE" --wds-noop --client-cid="$CID" $PROXY_OPT
clear_state
exit 2
else
save_state "PDH" $PDH
fi
echo "Network started successfully"
}
# qmicli -d /dev/cdc-wdm0 --wds-stop-network
stop_network ()
{
if [ -z "$CID" ]; then
echo "Network already stopped"
elif [ -z "$PDH" ]; then
echo "Network already stopped; need to cleanup CID $CID"
# Cleanup the client
qmicli -d "$DEVICE" --wds-noop --client-cid="$CID" $PROXY_OPT
else
STOP_NETWORK_CMD="qmicli -d $DEVICE --wds-stop-network=$PDH --client-cid=$CID $PROXY_OPT"
echo "Stopping network with '$STOP_NETWORK_CMD'..."
if [ -n "$QMIDEBUG" ]; then
STOP_NETWORK_OUT="\
[/dev/cdc-wdm0] Network stopped
"
else
STOP_NETWORK_OUT=`$STOP_NETWORK_CMD`
fi
echo "Network stopped successfully"
fi
clear_state
}
# qmicli -d /dev/cdc-wdm0 --wds-get-packet-service-status
packet_service_status ()
{
if [ -n "$CID" ]; then
USE_PREVIOUS_CID="--client-cid=$CID --client-no-release-cid"
fi
STATUS_CMD="qmicli -d $DEVICE --wds-get-packet-service-status $USE_PREVIOUS_CID $PROXY_OPT"
echo "Getting status with '$STATUS_CMD'..."
if [ -n "$QMIDEBUG" ]; then
STATUS_OUT="\
[/dev/cdc-wdm0] Connection status: 'disconnected'
"
else
STATUS_OUT=`$STATUS_CMD`
fi
CONN=`echo "$STATUS_OUT" | sed -n "s/.*Connection status:.*'\(.*\)'.*/\1/p"`
if [ -z "$CONN" ]; then
echo "error: couldn't get packet service status" 1>&2
exit 2
else
echo "Status: $CONN"
if [ "$CONN" != "connected" ]; then
exit 64
fi
fi
}
# Main
# Load profile, if any
load_profile
# Load previous state, if any
load_state
# Process commands
case $COMMAND in
"start")
start_network
;;
"stop")
stop_network
;;
"status")
packet_service_status
;;
*)
echo "error: unexpected command '$COMMAND'" 1>&2
print_usage
exit 255
;;
esac
exit 0