include ../common.mk

DBG                 ?= 0
SRCDIR              = src
OBJDIR              = obj
BORINGSSL_DIR       = ../bssl/src
MBEDTLS_DIR         = ../mbedtls/src

## Debug/Release configuration
ifeq ($(DBG),1)
DEBUG               = -DDEBUG -g -O0
RELEASE             =
STRIP               = true
else
DEBUG               =
RELEASE             = -Os -fdata-sections -ffunction-sections
STRIP               = $(NDK)/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/aarch64-linux-android/bin/strip
endif

## NDK configuration.
NDK                 = $(ANDROID_NDK)
NDK_TARGETARCH      = aarch64-linux-android
NDK_TARGETSHORTARCH = arm64
NDK_TOOLVER         = 4.9
NDK_HOSTARCH        = linux-x86_64
NDK_TOOLS           = $(NDK)/toolchains/llvm/prebuilt/$(NDK_HOSTARCH)/bin
NDK_SYSROOT         = $(NDK)/sysroot
NDK_TOOL            = $(NDK_TOOLS)/clang
NDK_LIBS            = $(NDK)/toolchains/$(NDK_TARGETARCH)-$(NDK_TOOLVER)/prebuilt/linux-x86_64/lib/gcc/$(NDK_TARGETARCH)/4.9.x
NDK_INCLUDES        = -I$(NDK)/sysroot/usr/include \
					  -I$(NDK)/sysroot/usr/include/$(NDK_TARGETARCH)
NDK_SYSROOT         = $(NDK)/platforms/android-$(NDK_TARGETVER)/arch-$(NDK_TARGETSHORTARCH)

OPT                 = $(DEBUG) \
					  $(RELEASE) \
					  -std=c99 \
					  -fPIE \
					  -Wall \
					  -target $(NDK_TARGETARCH)
CFLAGS              = $(OPT) \
					  $(NDK_INCLUDES)
CFLAGS_BORINGSSL    = $(CFLAGS) \
					  -I$(BORINGSSL_DIR) -I$(BORINGSSL_DIR)/include
CFLAGS_MBEDTLS      = $(CFLAGS) \
					  -I$(MBEDTLS_DIR)/include
LDFLAGS             = $(OPT) \
					  $(DEBUG) $(RELEASE) \
					  -pie \
					  --sysroot=$(NDK_SYSROOT) \
					  -B $(ANDROID_NDK)/toolchains/$(NDK_TARGETARCH)-$(NDK_TOOLVER)/prebuilt/linux-x86_64/$(NDK_TARGETARCH)/bin \
					  -L$(NDK_LIBS) \
					  -Wl,--gc-sections

LDFLAGS_BORINGSSL   = $(LDFLAGS) \
					  -L$(BORINGSSL_DIR)/build/crypto -L$(BORINGSSL_DIR)/build/ssl \
					  -lssl -lcrypto

LDFLAGS_MBEDTLS     = $(LDFLAGS) \
					  -L$(MBEDTLS_DIR)/library -lmbedx509 -lmbedtls -lmbedcrypto

.PHONY: print_boring_ld print_mbed_ld

all: init b_client m_client server

init:
	mkdir -p $(OBJDIR)
	# Create 1MB file with random data
	dd if=/dev/urandom of=etc/random_data bs=1024 count=1024

clean:
	rm -rf $(OBJDIR)
	rm -rf b_client
	rm -rf m_client
	rm -rf server

b_client: common
	$(NDK_TOOL) -c $(SRCDIR)/b_client.c -o $(OBJDIR)/b_client.o $(CFLAGS_BORINGSSL)
	$(NDK_TOOL) -o b_client $(OBJDIR)/b_client.o $(OBJDIR)/common.o $(OBJDIR)/common_boring.o $(LDFLAGS_BORINGSSL)
	$(STRIP) -s b_client

m_client: common
	$(NDK_TOOL) -c $(SRCDIR)/m_client.c -o $(OBJDIR)/m_client.o $(CFLAGS_MBEDTLS)
	$(NDK_TOOL) -o m_client $(OBJDIR)/m_client.o $(OBJDIR)/common.o $(LDFLAGS_MBEDTLS)
	$(STRIP) -s m_client

server: common
	$(NDK_TOOL) -c $(SRCDIR)/server.c -o $(OBJDIR)/server.o $(CFLAGS_BORINGSSL)
	$(NDK_TOOL) -o server $(OBJDIR)/server.o $(OBJDIR)/common.o $(OBJDIR)/common_boring.o $(LDFLAGS_BORINGSSL)
	$(STRIP) -s server

common:
	$(NDK_TOOL) -c $(SRCDIR)/common.c -o $(OBJDIR)/common.o $(CFLAGS)
	$(NDK_TOOL) -c $(SRCDIR)/common_boring.c -o $(OBJDIR)/common_boring.o $(CFLAGS_BORINGSSL)

adb-prepare:
	adb root
	adb remount
	adb shell rm -rf /data/app/test_space/*
	adb shell mkdir -p /data/app/test_space/etc
	# Need to reset date to 10th of April this year, otherwise, cert verification fails
	adb shell "toybox date 041910002018"

push: adb-prepare
	adb push b_client /data/app/test_space/
	adb push m_client /data/app/test_space/
	adb push server /data/app/test_space/
	adb push etc/* /data/app/test_space/etc/