initial

ndk/jni/entitlements_jni.c

@@ -0,0 +1,103 @@
+#include <jni.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "obfuscate.h"
+#include "obfuscate_file.h"
+
+static jint throw_illegal_state(JNIEnv *env, const char *msg)
+{
+	jclass cls = (*env)->FindClass(env, "java/lang/IllegalStateException");
+	if (cls != NULL)
+		(*env)->ThrowNew(env, cls, msg);
+	return OBF_ERR_NULL;
+}
+
+JNIEXPORT jint JNICALL
+Java_com_foxx_androidcast_entitlements_EntitlementNativeBridge_nativeReadFrom(
+	JNIEnv *env, jclass clazz, jstring path, jlong key, jlongArray out_val)
+{
+	const char *cpath;
+	uint64_t decoded = 0;
+	int32_t rv;
+	jlong slot;
+
+	(void)clazz;
+	if (path == NULL || out_val == NULL)
+		return throw_illegal_state(env, "path or out_val is null");
+
+	cpath = (*env)->GetStringUTFChars(env, path, NULL);
+	if (cpath == NULL)
+		return OBF_ERR_IO;
+
+	rv = read_from(cpath, (uint64_t)key, &decoded);
+	(*env)->ReleaseStringUTFChars(env, path, cpath);
+	if (rv != OBF_OK)
+		return rv;
+
+	slot = (jlong)decoded;
+	(*env)->SetLongArrayRegion(env, out_val, 0, 1, &slot);
+	return OBF_OK;
+}
+
+JNIEXPORT jint JNICALL
+Java_com_foxx_androidcast_entitlements_EntitlementNativeBridge_nativeWriteTo(
+	JNIEnv *env, jclass clazz, jstring path, jlong val, jlong key)
+{
+	const char *cpath;
+	int32_t rv;
+
+	(void)clazz;
+	if (path == NULL)
+		return throw_illegal_state(env, "path is null");
+
+	cpath = (*env)->GetStringUTFChars(env, path, NULL);
+	if (cpath == NULL)
+		return OBF_ERR_IO;
+
+	rv = write_to(cpath, (uint64_t)val, (uint64_t)key);
+	(*env)->ReleaseStringUTFChars(env, path, cpath);
+	return rv;
+}
+
+JNIEXPORT jint JNICALL
+Java_com_foxx_androidcast_entitlements_EntitlementNativeBridge_nativeDecode(
+	JNIEnv *env, jclass clazz, jlong encoded_val, jlong key, jlongArray out_val)
+{
+	uint64_t decoded = 0;
+	int32_t rv;
+	jlong slot;
+
+	(void)clazz;
+	if (out_val == NULL)
+		return throw_illegal_state(env, "out_val is null");
+
+	rv = decode((uint64_t)encoded_val, (uint64_t)key, &decoded);
+	if (rv != OBF_OK)
+		return rv;
+
+	slot = (jlong)decoded;
+	(*env)->SetLongArrayRegion(env, out_val, 0, 1, &slot);
+	return OBF_OK;
+}
+
+JNIEXPORT jint JNICALL
+Java_com_foxx_androidcast_entitlements_EntitlementNativeBridge_nativeEncode(
+	JNIEnv *env, jclass clazz, jlong val, jlong key, jlongArray out_encoded)
+{
+	uint64_t encoded = 0;
+	int32_t rv;
+	jlong slot;
+
+	(void)clazz;
+	if (out_encoded == NULL)
+		return throw_illegal_state(env, "out_encoded is null");
+
+	rv = encode((uint64_t)val, (uint64_t)key, &encoded);
+	if (rv != OBF_OK)
+		return rv;
+
+	slot = (jlong)encoded;
+	(*env)->SetLongArrayRegion(env, out_encoded, 0, 1, &slot);
+	return OBF_OK;
+}