#!/sbin/sh
##########################################################################################
# 
# NanoDroid System Testing Script
# by Nanolx
#
##########################################################################################

LOGFILE=/sdcard/NanoDroid-SysTest.log
rm -f ${LOGFILE}

##########################################################################################
# Generic Functions
##########################################################################################

ui_print() {
	echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
	echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
}

is_mounted () {
	if [ ! -z "$2" ]; then
		cat /proc/mounts | grep $1 | grep $2, >/dev/null
	else
		cat /proc/mounts | grep $1 >/dev/null
	fi
	return $?
}

mount_image() {
	if [ ! -d "$2" ]; then
		mount -o rw,remount rootfs /
		mkdir -p "$2" 2>/dev/null
		[ ! -d "$2" ] && return 1
	fi

	if ! is_mounted "$2"; then
		LOOPDEVICE=
		for LOOP in 0 1 2 3 4 5 6 7; do
			if ! is_mounted "$2"; then
				LOOPDEVICE=/dev/block/loop$LOOP
				[ -e $LOOPDEVICE ] || mknod $LOOPDEVICE b 7 $LOOP 2>/dev/null
				losetup $LOOPDEVICE "$1" && mount -t ext4 -o loop $LOOPDEVICE "$2"
				if is_mounted "$2"; then
					break;
				fi
			fi
		done
	fi
}

# taken from Magisk, with minor modifications for NanoDroid
mount_partitions () {
	SLOT=$(grep_cmdline androidboot.slot_suffix)
	if [ -z ${SLOT} ]; then
		SLOT=_$(grep_cmdline androidboot.slot)
		[ "${SLOT}" = "_" ] && SLOT=
	fi

	DEVICE_AB=FALSE

	is_mounted /data || mount /data || error "failed to mount /data!"

	mount -o bind /dev/urandom /dev/random

	! is_mounted /system && mount -o rw /system

	if [ ! -f /system/build.prop ]; then
		DEVICE_AB=TRUE
		SYSTEMBLOCK=$(find /dev/block -iname system${SLOT} | head -n 1)
		mount -t ext4 -o rw ${SYSTEMBLOCK} /system
	fi

	[ -f /system/build.prop ] || is_mounted /system || error "failed to mount /system (unsupported A/B device?)"

	if [ -f /system/init ]; then
		mkdir /system_root 2>/dev/null
		mount --move /system /system_root
		mount -o bind /system_root/system /system
	fi

	[ ! -f /system/build.prop ] && error "failed to mount /system (unsupported A/B device?)"

	if [ -L /system/vendor ]; then
		! is_mounted /vendor && mount /vendor
		if ! is_mounted /vendor; then
			VENDORBLOCK=$(find /dev/block -iname vendor${SLOT} | head -n 1)
			mount -t ext4 -o ro ${VENDORBLOCK} /vendor
		fi
	elif [ -d /system/vendor ]; then
		### XXX work-around required for some ROMs
		echo " xxx compat /vendor link created!" >> ${LOGFILE}
		ln -sf /system/vendor /vendor >/dev/null
	fi
}

error () {
	ui_print " "
	ui_print " !! ${@}"
	ui_print " "
	exit 1
}

##########################################################################################
# by @ale5000
##########################################################################################

search_fake_package_signature () {
	PERMISSION=android.permission.FAKE_PACKAGE_SIGNATURE
	PERMISSION_OD=$(echo -n "${PERMISSION}" | od -A n -t x1 | tr -d '\n' | sed -e 's/^ //g;s/ /00/g')
	HAS_FAKESIGN=false

	FW_RES_DIR="/dev/tmp/framework-res"
	mkdir -p "${FW_RES_DIR}"
	unzip -o /system/framework/framework-res.apk -d "${FW_RES_DIR}"

	grep -qF "${PERMISSION}" "${FW_RES_DIR}/AndroidManifest.xml" && HAS_FAKESIGN=true
	od -A n -t x1 "${FW_RES_DIR}/AndroidManifest.xml" | tr -d ' \n' | grep -qF "${PERMISSION_OD}" && HAS_FAKESIGN=true

	${HAS_FAKESIGN} && return 0 || return 1
}

##########################################################################################
# Device Functions
##########################################################################################

detect_outfd () {
	if [ -z $OUTFD ] || readlink /proc/$$/fd/$OUTFD | grep -q /tmp; then
		# We will have to manually find out OUTFD
		for FD in `ls /proc/$$/fd`; do
			if readlink /proc/$$/fd/$FD | grep -q pipe; then
				if ps | grep -v grep | grep -q " 3 $FD "; then
					OUTFD=$FD
					break
				fi
			fi
		done
	fi
}

detect_bootmode () {
	[ -z ${BOOTMODE} ] && BOOTMODE=false
	${BOOTMODE} || ps | grep zygote | grep -qv grep && BOOTMODE=true
	${BOOTMODE} || ps -A | grep zygote | grep -qv grep && BOOTMODE=true

	${BOOTMODE} && error " Run from TWRP!"
}

grep_prop() {
	REGEX="${1}"
	shift
	FILES="${@}"
	[ -z "${@}" ] && FILES='/system/build.prop'
	sed -n "s/^${REGEX}=//p" ${FILES} | \
		head -n 1
}

grep_cmdline() {
	local REGEX="s/^${1}=//p"
	sed -E 's/ +/\n/g' /proc/cmdline | \
		sed -n "${REGEX}" 2>/dev/null
}

system_test () {
	ABI=$(grep_prop ro.product.cpu.abi | cut -c-3)
	ABI2=$(grep_prop ro.product.cpu.abi2 | cut -c-3)
	ABILONG=$(grep_prop ro.product.cpu.abi)

	ARCH=arm

	[ "$ABI" = "x86" ] && ARCH=x86
	[ "$ABI2" = "x86" ] && ARCH=x86
	[ "$ABILONG" = "arm64-v8a" ] && ARCH=arm64
	[ "$ABILONG" = "x86_64" ] && ARCH=x86_64

	case ${ARCH} in
		arm | arm64 )
				FILE=/dev/tmp/file.arm
		;;
		x86 | x86_64 )
				FILE=/dev/tmp/file.x86
		;;
	esac

	chmod 0755 "${FILE}"

	DALVIKVM_BIN=$(ls -l /system/bin/dalvikvm | awk '{print $NF}')
	DALVIKVM_ARCH=$("${FILE}" -m "/dev/tmp/magic.mgc" -L /system/bin/dalvikvm)

	case ${DALVIKVM_BIN} in
		dalvikvm32 )
			LD="/system/lib:/vendor/lib:/system/vendor/lib"
		;;

		dalvikvm64 )
			LD="/system/lib64:/vendor/lib64:/system/vendor/lib64"
		;;

		dalvikvm )
			case ${DALVIKVM_ARCH} in
				*32-bit* )
					LD="/system/lib:/vendor/lib:/system/vendor/lib"
				;;

				*64-bit* )
					LD="/system/lib64:/vendor/lib64:/system/vendor/lib64"
				;;
			esac
		;;
	esac

	SERVICES_JAR_DEX=$(unzip -lq /system/framework/services.jar | grep classes.dex)

	if [ -n "$(find '/system/framework/' -name 'services.vdex')" ]; then
		ROM_DEX_STATUS=VDEX
	elif [ -n "$(find '/system/framework/' -name 'services.odex')" ]; then
		ROM_DEX_STATUS=ODEX
	else	ROM_DEX_STATUS=UNKOWN
	fi

	[ "${SERVICES_JAR_DEX}" ] && ROM_DEX_STATUS=DEODEX
}

add_log () {
	echo "${@}"  >> ${LOGFILE}
}

store_results () {
	add_log "NanoDroid System Test Results"
	add_log "============================="
	add_log ""

	add_log "CPU and ABI details"
	add_log "==================="
	add_log ""
	add_log "ARCH=${ARCH}"
	add_log "ABI=${ABI}"
	add_log "ABI2=${ABI2}"
	add_log "ABILONG=${ABILONG}"

	add_log ""
	add_log "Mounted Partitions"
	add_log "=================="
	add_log ""
	mount | awk '{print $1 " on " $3}' >> ${LOGFILE}
	add_log "DEVICE_AB=${DEVICE_AB}"

	add_log ""
	add_log "DalvikVM, LD_LIBRARY_PATH and DEX status"
	add_log "========================================"
	add_log ""
	add_log "DALVIKVM_BIN=${DALVIKVM_BIN}"
	add_log "DALVIKVM_ARCH=${DALVIKVM_ARCH}"
	add_log "LD_LIBRARY_PATH=${LD}"
	add_log "ROM_DEX_STATUS=${ROM_DEX_STATUS}"

	add_log ""
	add_log "Generic System Properties"
	add_log "========================="
	add_log ""
	for prop in ro.build.description ro.build.display.id ro.build.flavor ro.build.product \
		ro.build.tags ro.build.type ro.build.version.sdk ro.build.version.security_patch \
		ro.product.cpu.abi ro.product.cpu.abilist ro.product.cpu.abilist32 \
		ro.product.cpu.abilist64 ro.product.model ro.product.vendor.device; do
		add_log "${prop}=$(grep_prop ${prop})"
	done

	add_log ""
	add_log "Native SigSpoof?"
	add_log "================"
	add_log ""
	search_fake_package_signature && add_log "NATIVE_SIGSPOOF=TRUE" || add_log "NATIVE_SIGSPOOF=FALSE"

	add_log ""
	add_log "Magisk installed?"
	add_log "================="
	add_log ""
	[ -f /data/adb/magisk.img ] && add_log "MAGISK=TRUE" || add_log "MAGISK=FALSE"

	add_log ""
	add_log "Installed Google packages"
	add_log "=== packages.list ======="
	add_log ""
	grep google /data/system/packages.list >> ${LOGFILE}

	add_log ""
	add_log "=== packages.xml ========"
	add_log ""
	grep 'package .*google' /data/system/packages.xml >> ${LOGFILE}

	add_log ""
	add_log "Content of /system/app"
	add_log "======================"
	add_log ""
	find /system/app -type f -name '*.apk' >> ${LOGFILE}

	add_log ""
	add_log "Content of /system/priv-app"
	add_log "======================"
	add_log ""
	find /system/priv-app -type f -name '*.apk' >> ${LOGFILE}
}