Add simple sanitize, Fix#148

native/src/main/jni/image/image.c

@@ -53,8 +53,9 @@ void decodeCommon(IMAGE *image, SOURCE *src) {
 }
 
 IMAGE *createFromFd(int fd) {
-    AImageDecoder *decoder;
-    AImageDecoder_createFromFd(fd, &decoder);
+    AImageDecoder *decoder = NULL;
+    if (AImageDecoder_createFromFd(fd, &decoder) != ANDROID_IMAGE_DECODER_SUCCESS)
+        return NULL;
     IMAGE *image = calloc(1, sizeof(IMAGE));
     SOURCE *src = calloc(1, sizeof(SOURCE));
     src->decoder = decoder;

native/src/main/jni/image/java_wrapper.c

@@ -53,6 +53,8 @@ jobject create_image_object(JNIEnv *env, void *ptr, int format, int width, int h
 JNIEXPORT jobject JNICALL
 Java_com_hippo_image_Image_nativeDecodeFdInt(JNIEnv *env, jclass clazz, jint fd) {
     IMAGE *image = createFromFd(fd);
+    if (!image)
+        return NULL;
     return create_image_object(env, image, image->isAnimated, image->width, image->height);
 }