contrib: move Android tools to wireguard-android repo
https: //git.zx2c4.com/wireguard-android/ Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Jason A. Donenfeld
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1019175179
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# Tools for Android
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This currently contains a version of wg-quick.bash that works with
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Android 7's `ndc` command. It requires the WireGuard module to be
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part of your kernel, but after that, the usual `wg-quick up` and
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`wg-quick down` commands work normally.
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## Installation
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Build a `wg` binary for Android and place it in this folder. Then
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copy this folder some place on your phone, and run `sh ./install.sh`
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as root. It should survive ROM flashes.
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## Usage
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Compared to the ordinary wg-quick, this one does not support SaveConfig
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and {Pre,Post}{Up,Down}.
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Put your configuration files into `/data/misc/wireguard/`. After that,
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the normal `wg-quick up|down` commands will work.
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#!/sbin/sh
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. /tmp/backuptool.functions
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list_files() {
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cat <<_EOF
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xbin/wg
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xbin/wg-quick
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_EOF
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}
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case "$1" in
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backup)
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list_files | while read FILE DUMMY; do
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backup_file $S/"$FILE"
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done
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;;
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restore)
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list_files | while read FILE REPLACEMENT; do
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R=""
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[ -n "$REPLACEMENT" ] && R="$S/$REPLACEMENT"
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[ -f "$C/$S/$FILE" ] && restore_file $S/"$FILE" "$R"
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done
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;;
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pre-backup)
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# Stub
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;;
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post-backup)
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# Stub
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;;
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pre-restore)
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# Stub
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;;
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post-restore)
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# Stub
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;;
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esac
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#!/bin/sh
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mount -o rw,remount /system
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cp -v ./addonsd.sh /system/addon.d/40-wireguard.sh
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if [ -f ./wg ]; then
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cp -v ./wg /system/xbin/wg
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else
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echo "Warning: this directory does not contain wg. You may have forgotten to compile it yourself?" >&2
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fi
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cp -v ./wg-quick.bash /system/xbin/wg-quick
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chmod 755 /system/xbin/wg /system/xbin/wg-quick /system/addon.d/40-wireguard.sh
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mkdir -pvm 700 /data/misc/wireguard
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mount -o ro,remount /system
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@ -1,187 +0,0 @@
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#!/system/xbin/bash
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#
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# Copyright (C) 2016-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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#
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set -e -o pipefail
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shopt -s extglob
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export LC_ALL=C
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SELF="$(readlink -f "${BASH_SOURCE[0]}")"
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export PATH="${SELF%/*}:$PATH"
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WG_CONFIG=""
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INTERFACE=""
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NETID=0
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ADDRESSES=( )
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MTU=""
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DNS=""
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CONFIG_FILE=""
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PROGRAM="${0##*/}"
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ARGS=( "$@" )
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parse_options() {
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local interface_section=0 line key value
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CONFIG_FILE="$1"
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[[ $CONFIG_FILE =~ ^[a-zA-Z0-9_=+.-]{1,16}$ ]] && CONFIG_FILE="/data/misc/wireguard/$CONFIG_FILE.conf"
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[[ -e $CONFIG_FILE ]] || die "\`$CONFIG_FILE' does not exist"
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[[ $CONFIG_FILE =~ /?([a-zA-Z0-9_=+.-]{1,16})\.conf$ ]] || die "The config file must be a valid interface name, followed by .conf"
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((($(stat -c '%#a' "$CONFIG_FILE") & 0007) == 0)) || echo "Warning: \`$CONFIG_FILE' is world accessible" >&2
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INTERFACE="${BASH_REMATCH[1]}"
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shopt -s nocasematch
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while read -r line || [[ -n $line ]]; do
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key="${line%%=*}"; key="${key##*( )}"; key="${key%%*( )}"
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value="${line#*=}"; value="${value##*( )}"; value="${value%%*( )}"
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[[ $key == "["* ]] && interface_section=0
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[[ $key == "[Interface]" ]] && interface_section=1
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if [[ $interface_section -eq 1 ]]; then
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case "$key" in
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Address) ADDRESSES+=( ${value//,/ } ); continue ;;
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MTU) MTU="$value"; continue ;;
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DNS) DNS="$value"; continue ;;
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esac
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fi
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WG_CONFIG+="$line"$'\n'
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done < "$CONFIG_FILE"
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shopt -u nocasematch
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}
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cmd() {
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echo "[#] $*" >&2
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"$@"
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}
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cndc() {
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local out="$(cmd ndc "$@")"
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[[ $out == *200\ 0* ]] || { echo "$out"; return 1; }
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}
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die() {
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echo "$PROGRAM: $*" >&2
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exit 1
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}
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auto_su() {
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[[ $UID == 0 ]] || exec su -p -c "'$SELF' ${ARGS[*]}"
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}
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add_if() {
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cmd ip link add "$INTERFACE" type wireguard
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}
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del_if() {
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cmd ip link del "$INTERFACE"
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[[ $(ip rule show) =~ 0xc([0-9a-f]+)/0xcffff\ lookup\ $INTERFACE ]] && cndc network destroy $(( 0x${BASH_REMATCH[1]} ));
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}
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up_if() {
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while [[ $NETID -lt 4096 ]]; do
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NETID="$RANDOM"
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done
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cmd wg set "$INTERFACE" fwmark 0x20000
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cndc interface setcfg "$INTERFACE" up
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cndc network create "$NETID" vpn 1 1
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cndc network interface add "$NETID" "$INTERFACE"
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cndc network users add "$NETID" 0-99999
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}
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set_dns() {
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cndc resolver setnetdns "$NETID" "" "$1"
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}
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add_addr() {
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if [[ $1 == *:* ]]; then
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cndc interface ipv6 "$INTERFACE" enable
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cmd ip -6 addr add "$1" dev "$INTERFACE"
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else
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local ip="${1%%/*}" mask=32
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[[ $1 == */* ]] && mask="${1##*/}"
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cndc interface setcfg "$INTERFACE" "$ip" "$mask"
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fi
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}
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set_mtu() {
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local mtu=0 endpoint output
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if [[ -n $MTU ]]; then
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cndc interface setmtu "$INTERFACE" "$MTU"
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return
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fi
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while read -r _ endpoint; do
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[[ $endpoint =~ ^\[?([a-z0-9:.]+)\]?:[0-9]+$ ]] || continue
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output="$(ip route get "${BASH_REMATCH[1]}" || true)"
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[[ ( $output =~ mtu\ ([0-9]+) || ( $output =~ dev\ ([^ ]+) && $(ip link show dev "${BASH_REMATCH[1]}") =~ mtu\ ([0-9]+) ) ) && ${BASH_REMATCH[1]} -gt $mtu ]] && mtu="${BASH_REMATCH[1]}"
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done < <(wg show "$INTERFACE" endpoints)
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if [[ $mtu -eq 0 ]]; then
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read -r output < <(ip route show default || true) || true
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[[ ( $output =~ mtu\ ([0-9]+) || ( $output =~ dev\ ([^ ]+) && $(ip link show dev "${BASH_REMATCH[1]}") =~ mtu\ ([0-9]+) ) ) && ${BASH_REMATCH[1]} -gt $mtu ]] && mtu="${BASH_REMATCH[1]}"
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fi
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[[ $mtu -gt 0 ]] || mtu=1500
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cndc interface setmtu "$INTERFACE" $(( mtu - 80 ))
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}
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add_route() {
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cndc network route add "$NETID" "$INTERFACE" "$1"
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}
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set_config() {
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cmd wg setconf "$INTERFACE" <(echo "$WG_CONFIG")
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}
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cmd_usage() {
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cat >&2 <<-_EOF
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Usage: $PROGRAM [ up | down ] [ CONFIG_FILE | INTERFACE ]
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CONFIG_FILE is a configuration file, whose filename is the interface name
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followed by \`.conf'. Otherwise, INTERFACE is an interface name, with
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configuration found at /data/misc/wireguard/INTERFACE.conf. It is to be readable
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by wg(8)'s \`setconf' sub-command, with the exception of the following additions
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to the [Interface] section, which are handled by $PROGRAM:
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- Address: may be specified one or more times and contains one or more
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IP addresses (with an optional CIDR mask) to be set for the interface.
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- MTU: an optional MTU for the interface; if unspecified, auto-calculated.
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- DNS: an optional DNS server to use while the device is up.
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See wg-quick(8) for more info and examples.
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_EOF
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}
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cmd_up() {
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local i
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[[ -z $(ip link show dev "$INTERFACE" 2>/dev/null) ]] || die "\`$INTERFACE' already exists"
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trap 'del_if; exit' INT TERM EXIT
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add_if
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set_config
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set_mtu
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for i in "${ADDRESSES[@]}"; do
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add_addr "$i"
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done
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up_if
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[[ -z $DNS ]] || set_dns "$DNS"
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for i in $(while read -r _ i; do for i in $i; do [[ $i =~ ^[0-9a-z:.]+/[0-9]+$ ]] && echo "$i"; done; done < <(wg show "$INTERFACE" allowed-ips) | sort -nr -k 2 -t /); do
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[[ $(ip route get "$i" 2>/dev/null) == *dev\ $INTERFACE\ * ]] || add_route "$i"
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done
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trap - INT TERM EXIT
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}
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cmd_down() {
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[[ -n $(ip link show dev "$INTERFACE" type wireguard 2>/dev/null) ]] || die "\`$INTERFACE' is not a WireGuard interface"
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del_if
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}
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if [[ $# -eq 1 && ( $1 == --help || $1 == -h || $1 == help ) ]]; then
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cmd_usage
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elif [[ $# -eq 2 && $1 == up ]]; then
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auto_su
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parse_options "$2"
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cmd_up
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elif [[ $# -eq 2 && $1 == down ]]; then
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auto_su
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parse_options "$2"
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cmd_down
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else
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cmd_usage
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exit 1
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fi
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exit 0
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