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Diffstat (limited to 'cli/wg-quick.bash')
-rw-r--r-- | cli/wg-quick.bash | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/cli/wg-quick.bash b/cli/wg-quick.bash deleted file mode 100644 index 4a1bce29..00000000 --- a/cli/wg-quick.bash +++ /dev/null @@ -1,187 +0,0 @@ -#!/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() { - [[ ${#DNS[@]} -eq 0 ]] || cndc resolver setnetdns "$NETID" "" "${DNS[@]}" -} - -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 - set_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 |