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#!/sbin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (C) 2015-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
SCRIPT="$1"
OUTFD="$2"
ZIP="$3"
ARCH="$(getprop ro.product.cpu.abi)"
print() {
echo "ui_print [+] $*" >&$OUTFD
}
die() {
echo "ui_print [-] $*" >&$OUTFD
exit 1
}
cleanup() {
mount -o ro,remount /system
rm -rf /tmp/wireguard
}
mount_system() {
local slot dev
if grep -q /system /proc/mounts; then
print "Remounting system partition r/w"
mount -o rw,remount /system || die "Could not remount system partition r/w"
else
print "Mounting system partition"
slot="$(getprop ro.boot.slot_suffix)"
[ -z "$slot" ] && slot="$(getprop ro.boot.slot)"
dev="$(find /dev/block -iname "system$slot" -print | head -n 1)"
[ -n "$dev" ] || die "Could not find system partition"
mount -o rw "$dev" /system || die "Could not mount system partition"
fi
}
echo "ui_print ==================================" >&$OUTFD
echo "ui_print = WireGuard Tools =" >&$OUTFD
echo "ui_print = by zx2c4 =" >&$OUTFD
echo "ui_print = www.wireguard.com =" >&$OUTFD
echo "ui_print ==================================" >&$OUTFD
[ -n $ARCH ] || die "Could not determine architecture"
[ -f "$ZIP" ] || die "Could not find zip file"
trap cleanup INT TERM EXIT
mount_system
print "Extracting files"
rm -rf /tmp/wireguard
mkdir -p /tmp/wireguard
unzip -d /tmp/wireguard "$ZIP"
print "Installing WireGuard tools"
[ -d /tmp/wireguard/arch/$ARCH ] || die "Not available for device's ABI"
cp -f /tmp/wireguard/arch/$ARCH/* /system/xbin/ || die "Could not copy binaries"
chmod 755 /system/xbin/wg /system/xbin/wg-quick || die "Could not mark binaries as executable"
if [ -d /system/addon.d ]; then
print "Installing ROM flash survial script"
cp -f /tmp/wireguard/addon.d/40-wireguard.sh /system/addon.d/ || die "Could not copy survival script"
chmod 755 /system/addon.d/40-wireguard.sh || die "Could not mark survival script as executable"
fi
mkdir -pm 700 /data/misc/wireguard
print "Success! Be sure your kernel has the WireGuard module enabled."
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