+++ /dev/null
-#!/system/xbin/bash
-#
-# Copyright (C) 2016-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
-#
-
-set -e -o pipefail
-shopt -s extglob
-export LC_ALL=C
-
-SELF="$(readlink -f "${BASH_SOURCE[0]}")"
-export PATH="${SELF%/*}:$PATH"
-
-WG_CONFIG=""
-INTERFACE=""
-NETID=0
-ADDRESSES=( )
-MTU=""
-DNS=""
-CONFIG_FILE=""
-PROGRAM="${0##*/}"
-ARGS=( "$@" )
-
-parse_options() {
- local interface_section=0 line key value
- CONFIG_FILE="$1"
- [[ $CONFIG_FILE =~ ^[a-zA-Z0-9_=+.-]{1,16}$ ]] && CONFIG_FILE="/data/misc/wireguard/$CONFIG_FILE.conf"
- [[ -e $CONFIG_FILE ]] || die "\`$CONFIG_FILE' does not exist"
- [[ $CONFIG_FILE =~ /?([a-zA-Z0-9_=+.-]{1,16})\.conf$ ]] || die "The config file must be a valid interface name, followed by .conf"
- ((($(stat -c '%#a' "$CONFIG_FILE") & 0007) == 0)) || echo "Warning: \`$CONFIG_FILE' is world accessible" >&2
- INTERFACE="${BASH_REMATCH[1]}"
- shopt -s nocasematch
- while read -r line || [[ -n $line ]]; do
- key="${line%%=*}"; key="${key##*( )}"; key="${key%%*( )}"
- value="${line#*=}"; value="${value##*( )}"; value="${value%%*( )}"
- [[ $key == "["* ]] && interface_section=0
- [[ $key == "[Interface]" ]] && interface_section=1
- if [[ $interface_section -eq 1 ]]; then
- case "$key" in
- Address) ADDRESSES+=( ${value//,/ } ); continue ;;
- MTU) MTU="$value"; continue ;;
- DNS) DNS="$value"; continue ;;
- esac
- fi
- WG_CONFIG+="$line"$'\n'
- done < "$CONFIG_FILE"
- shopt -u nocasematch
-}
-
-cmd() {
- echo "[#] $*" >&2
- "$@"
-}
-
-cndc() {
- local out="$(cmd ndc "$@")"
- [[ $out == *200\ 0* ]] || { echo "$out"; return 1; }
-}
-
-die() {
- echo "$PROGRAM: $*" >&2
- exit 1
-}
-
-auto_su() {
- [[ $UID == 0 ]] || exec su -p -c "'$SELF' ${ARGS[*]}"
-}
-
-add_if() {
- cmd ip link add "$INTERFACE" type wireguard
-}
-
-del_if() {
- cmd ip link del "$INTERFACE"
- [[ $(ip rule show) =~ 0xc([0-9a-f]+)/0xcffff\ lookup\ $INTERFACE ]] && cndc network destroy $(( 0x${BASH_REMATCH[1]} ));
-}
-
-up_if() {
- while [[ $NETID -lt 4096 ]]; do
- NETID="$RANDOM"
- done
- cmd wg set "$INTERFACE" fwmark 0x20000
- cndc interface setcfg "$INTERFACE" up
- cndc network create "$NETID" vpn 1 1
- cndc network interface add "$NETID" "$INTERFACE"
- cndc network users add "$NETID" 0-99999
-}
-
-set_dns() {
- cndc resolver setnetdns "$NETID" "" "$1"
-}
-
-add_addr() {
- if [[ $1 == *:* ]]; then
- cndc interface ipv6 "$INTERFACE" enable
- cmd ip -6 addr add "$1" dev "$INTERFACE"
- else
- local ip="${1%%/*}" mask=32
- [[ $1 == */* ]] && mask="${1##*/}"
- cndc interface setcfg "$INTERFACE" "$ip" "$mask"
- fi
-}
-
-set_mtu() {
- local mtu=0 endpoint output
- if [[ -n $MTU ]]; then
- cndc interface setmtu "$INTERFACE" "$MTU"
- return
- fi
- while read -r _ endpoint; do
- [[ $endpoint =~ ^\[?([a-z0-9:.]+)\]?:[0-9]+$ ]] || continue
- output="$(ip route get "${BASH_REMATCH[1]}" || true)"
- [[ ( $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]}"
- done < <(wg show "$INTERFACE" endpoints)
- if [[ $mtu -eq 0 ]]; then
- read -r output < <(ip route show default || true) || true
- [[ ( $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]}"
- fi
- [[ $mtu -gt 0 ]] || mtu=1500
- cndc interface setmtu "$INTERFACE" $(( mtu - 80 ))
-}
-
-add_route() {
- cndc network route add "$NETID" "$INTERFACE" "$1"
-}
-
-set_config() {
- cmd wg setconf "$INTERFACE" <(echo "$WG_CONFIG")
-}
-
-cmd_usage() {
- cat >&2 <<-_EOF
- Usage: $PROGRAM [ up | down ] [ CONFIG_FILE | INTERFACE ]
-
- CONFIG_FILE is a configuration file, whose filename is the interface name
- followed by \`.conf'. Otherwise, INTERFACE is an interface name, with
- configuration found at /data/misc/wireguard/INTERFACE.conf. It is to be readable
- by wg(8)'s \`setconf' sub-command, with the exception of the following additions
- to the [Interface] section, which are handled by $PROGRAM:
-
- - Address: may be specified one or more times and contains one or more
- IP addresses (with an optional CIDR mask) to be set for the interface.
- - MTU: an optional MTU for the interface; if unspecified, auto-calculated.
- - DNS: an optional DNS server to use while the device is up.
-
- See wg-quick(8) for more info and examples.
- _EOF
-}
-
-cmd_up() {
- local i
- [[ -z $(ip link show dev "$INTERFACE" 2>/dev/null) ]] || die "\`$INTERFACE' already exists"
- trap 'del_if; exit' INT TERM EXIT
- add_if
- set_config
- set_mtu
- for i in "${ADDRESSES[@]}"; do
- add_addr "$i"
- done
- up_if
- [[ -z $DNS ]] || set_dns "$DNS"
- 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
- [[ $(ip route get "$i" 2>/dev/null) == *dev\ $INTERFACE\ * ]] || add_route "$i"
- done
- trap - INT TERM EXIT
-}
-
-cmd_down() {
- [[ -n $(ip link show dev "$INTERFACE" type wireguard 2>/dev/null) ]] || die "\`$INTERFACE' is not a WireGuard interface"
- del_if
-}
-
-if [[ $# -eq 1 && ( $1 == --help || $1 == -h || $1 == help ) ]]; then
- cmd_usage
-elif [[ $# -eq 2 && $1 == up ]]; then
- auto_su
- parse_options "$2"
- cmd_up
-elif [[ $# -eq 2 && $1 == down ]]; then
- auto_su
- parse_options "$2"
- cmd_down
-else
- cmd_usage
- exit 1
-fi
-
-exit 0
projects / thirdparty / wireguard-tools.git / commitdiff
