gts3l: sensor: Fix fingerprint working by adding shims

Signed-off-by: Deokgyu Yang <secugyu@gmail.com>
Change-Id: I7af74a834a430767b4f9c8f07f97813506b0c8aa

BoardConfig.mk

@@ -211,5 +211,10 @@ WPA_SUPPLICANT_VERSION := VER_0_8_X
 
 BOARD_HAVE_SAMSUNG_WIFI := true
 
+# Shims
+TARGET_LD_SHIM_LIBS := \
+    /vendor/lib/libbauthserver.so|libbauthtzcommon_shim.so \
+    /vendor/lib64/libbauthserver.so|libbauthtzcommon_shim.so
+
 # inherit from the proprietary version
 -include vendor/samsung/gts3llte/BoardConfigVendor.mk

device.mk

@@ -190,7 +190,8 @@ PRODUCT_PACKAGES += \
 
 # Fingerprint
 PRODUCT_PACKAGES += \
-    android.hardware.biometrics.fingerprint@2.1-service.samsung
+    android.hardware.biometrics.fingerprint@2.1-service.samsung \
+    libbauthtzcommon_shim
 
 # For config.fs
 PRODUCT_PACKAGES += \

shims/libbauthtzcommon/Android.mk

@@ -0,0 +1,28 @@
+# Copyright (C) 2017 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    libbauthtzcommon.c
+
+LOCAL_SHARED_LIBRARIES := liblog
+
+LOCAL_MODULE := libbauthtzcommon_shim
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+
+include $(BUILD_SHARED_LIBRARY)

shims/libbauthtzcommon/libbauthtzcommon.c

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2017 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "libbauthtzcommon_shim"
+#define LOG_NDEBUG 0
+
+#include <cutils/log.h>
+
+int BAuth_Hat_OP(int arg0, int arg1, int arg2, int arg3, int arg4, int arg5)
+{
+    ALOGW("SHIM: hijacking %s!", __func__);
+
+    /*
+     * This function is supposed to pass the hardware authentication token
+     * (HAT) to the mobicore trustlet.
+     */
+
+    return 0;
+}