reverse tether script

Works together with the network manager on the host and uses dhcp.

Signed-off-by: Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>

1 files changed, 96 insertions, 0 deletions

diff --git a/networking/usb/device.sh b/networking/usb/device.sh
new file mode 100644
index 0000000..254bd4e
--- /dev/null
+++ b/networking/usb/device.sh
@@ -0,0 +1,96 @@
+#!/system/bin/sh
+
+# Replicant USB Networking
+# ========================
+#
+# Copyright (C) 2011,2014 Paul Kocialkowski and Riku Saikkonen
+# Copyright (C) 2017 Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
+#
+# 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 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 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/>.
+
+set -e
+
+USB_IFACE="rndis0"
+
+# OpenNIC DNS servers
+DNS1="193.183.98.154"
+DNS2="87.98.175.85"
+
+start_rndis () {
+    svc usb setFunction rndis
+}
+
+stop_rndis () {
+    svc usb setFunction
+}
+
+if_up () {
+    ifconfig $USB_IFACE up
+}
+
+if_down () {
+    ifconfig $USB_IFACE down
+}
+
+clear_iface () {
+    echo "Clearing network configuration"
+    ndc network destroy 1
+    ndc interface clearaddrs "$iface"
+}
+
+setup_iface () {
+    gateway=$(ip route show 0.0.0.0/0 dev $USB_IFACE | cut -d\  -f3)
+    echo "Your gateway is $gateway"
+    ndc network create 1
+    ndc network interface add 1 "$USB_IFACE"
+    ndc network route add 1 "$USB_IFACE"  0.0.0.0/0 "$gateway"
+    ndc resolver setnetdns 1 "" "$DNS1" "$DNS2"
+    ndc network default set 1
+}
+
+configure () {
+    clear_iface
+
+    echo "Configuring DHCP, please wait"
+    if_up
+
+    if [ $(dhcpcd $USB_IFACE) ]; then
+       echo "Error configuring DHCP"
+    fi
+
+    setup_iface
+
+    echo "DHCP configured"
+}
+
+case "$1" in
+    start1)
+	echo "Starting Replicant USB networking, phase 1"
+	start_rndis
+	;;
+    start2)
+	echo "Starting Replicant USB networking, phase 2"
+	configure
+	;;
+    stop)
+	echo "Stopping Replicant USB networking"
+	if_down
+	stop_rndis
+	;;
+    *)
+	echo "Usage: sh $0 {start1|start2|stop}"
+	;;
+esac
+
+exit 0