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diff --git a/src/frontends/android/jni/libandroidbridge/android_jni.h b/src/frontends/android/jni/libandroidbridge/android_jni.h
new file mode 100644
index 000000000..774d37d7e
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+++ b/src/frontends/android/jni/libandroidbridge/android_jni.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2012 Tobias Brunner
+ * Copyright (C) 2012 Giuliano Grassi
+ * Copyright (C) 2012 Ralf Sager
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup android_jni android_jni
+ * @{ @ingroup libandroidbridge
+ */
+
+#ifndef ANDROID_JNI_H_
+#define ANDROID_JNI_H_
+
+#include <jni.h>
+#include <library.h>
+
+#define JNI_PACKAGE org_strongswan_android_logic
+#define JNI_PACKAGE_STRING "org/strongswan/android/logic"
+
+#define JNI_METHOD_PP(pack, klass, name, ret, ...) \
+	ret Java_##pack##_##klass##_##name(JNIEnv *env, jobject this, ##__VA_ARGS__)
+
+#define JNI_METHOD_P(pack, klass, name, ret, ...) \
+	JNI_METHOD_PP(pack, klass, name, ret, ##__VA_ARGS__)
+
+#define JNI_METHOD(klass, name, ret, ...) \
+	JNI_METHOD_P(JNI_PACKAGE, klass, name, ret, ##__VA_ARGS__)
+
+/**
+ * Java classes
+ * Initialized in JNI_OnLoad()
+ */
+extern jclass *android_charonvpnservice_class;
+extern jclass *android_charonvpnservice_builder_class;
+
+/**
+ * Attach the current thread to the JVM
+ *
+ * As local JNI references are not freed until the thread detaches
+ * androidjni_detach_thread() should be called as soon as possible.
+ * If it is not called a thread-local destructor ensures that the
+ * thread is at least detached as soon as it terminates.
+ *
+ * @param env		JNIEnv
+ */
+void androidjni_attach_thread(JNIEnv **env);
+
+/**
+ * Detach the current thread from the JVM
+ *
+ * Call this as soon as possible to ensure that local JNI references are freed.
+ */
+void androidjni_detach_thread();
+
+/**
+ * Handle exceptions thrown by a JNI call
+ *
+ * @param env		JNIEnv
+ * @return			TRUE if an exception was thrown
+ */
+static inline bool androidjni_exception_occurred(JNIEnv *env)
+{
+	if ((*env)->ExceptionOccurred(env))
+	{	/* clear any exception, otherwise the VM is terminated */
+		(*env)->ExceptionDescribe(env);
+		(*env)->ExceptionClear(env);
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * Convert a Java string to a C string.  Memory is allocated.
+ *
+ * @param env		JNIEnv
+ * @param jstr		Java string
+ * @return			native C string (allocated)
+ */
+static inline char *androidjni_convert_jstring(JNIEnv *env, jstring jstr)
+{
+	char *str;
+	jsize len;
+
+	len = (*env)->GetStringUTFLength(env, jstr);
+	str = malloc(len + 1);
+	(*env)->GetStringUTFRegion(env, jstr, 0, len, str);
+	str[len] = '\0';
+	return str;
+}
+
+#endif /** ANDROID_JNI_H_ @}*/