Check checksum on android sdk and ndk download

scripts/setup-android-sdk.sh

@@ -6,6 +6,10 @@ set -e -u
 test -f $HOME/.termuxrc && . $HOME/.termuxrc
 : ${ANDROID_HOME:="${HOME}/lib/android-sdk"}
 : ${NDK:="${HOME}/lib/android-ndk"}
+ANDROID_SDK_FILE=sdk-tools-linux-4333796.zip
+ANDROID_SDK_SHA256=92ffee5a1d98d856634e8b71132e8a95d96c83a63fde1099be3d86df3106def9
+ANDROID_NDK_FILE=android-ndk-r${TERMUX_NDK_VERSION}-$(uname)-x86_64.zip
+ANDROID_NDK_SHA256=ba3d813b47de75bc32a2f3de087f72599c6cb36fdc9686b96f517f5492ff43ca
 
 if [ ! -d $ANDROID_HOME ]; then
 	mkdir -p $ANDROID_HOME
@@ -16,7 +20,8 @@ if [ ! -d $ANDROID_HOME ]; then
 	# The downloaded version below is 26.1.1.:
 	curl --fail --retry 3 \
 		-o tools.zip \
-		https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip
+		https://dl.google.com/android/repository/${ANDROID_SDK_FILE}
+	echo "${ANDROID_SDK_SHA256} tools.zip" | sha256sum -c -
 	rm -Rf android-sdk
 	unzip -q tools.zip -d android-sdk
 	rm tools.zip
@@ -27,8 +32,8 @@ if [ ! -d $NDK ]; then
 	cd $NDK/..
 	rm -Rf `basename $NDK`
 	curl --fail --retry 3 -o ndk.zip \
-		http://dl.google.com/android/repository/android-ndk-r${TERMUX_NDK_VERSION}-`uname`-x86_64.zip
-
+		http://dl.google.com/android/repository/${ANDROID_NDK_FILE}
+	echo "${ANDROID_NDK_SHA256} ndk.zip" | sha256sum -c -
 	rm -Rf android-ndk-r$TERMUX_NDK_VERSION
 	unzip -q ndk.zip
 	mv android-ndk-r$TERMUX_NDK_VERSION `basename $NDK`