diff --git a/src/sdk.h b/src/sdk.h
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+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015 ZeroTier, Inc.
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef _ZT_SDK_H
+#define _ZT_SDK_H 1
+
+#include
+#include
+#include "signatures.h"
+
+#if defined(__ANDROID__)
+ // For defining the Android direct-call API
+ #include
+#endif
+
+#include "build.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define INTERCEPT_ENABLED 111
+#define INTERCEPT_DISABLED 222
+#define MAX_DIR_SZ 256 // Max path length used for home dir
+
+extern void load_symbols();
+extern void zts_init_rpc(const char *path, const char *nwid);
+extern char *api_netpath;
+extern char *debug_logfile;
+
+// Function pointers to original system calls
+// - These are used when we detect that either the intercept is not
+// available or that ZeroTier hasn't administered the given socket
+#if defined(__linux__)
+ extern int (*realaccept4)(ACCEPT4_SIG);
+ #if !defined(__ANDROID__)
+ extern int (*realsyscall)(SYSCALL_SIG);
+ #endif
+#endif
+
+#if !defined(__ANDROID__)
+ bool check_intercept_enabled();
+ extern int (*realbind)(BIND_SIG);
+ extern int (*realsendmsg)(SENDMSG_SIG);
+ extern ssize_t (*realsendto)(SENDTO_SIG);
+ extern int (*realrecvmsg)(RECVMSG_SIG);
+ extern int (*realrecvfrom)(RECVFROM_SIG);
+#endif
+ extern int (*realconnect)(CONNECT_SIG);
+ extern int (*realaccept)(ACCEPT_SIG);
+ extern int (*reallisten)(LISTEN_SIG);
+ extern int (*realsocket)(SOCKET_SIG);
+ extern int (*realsetsockopt)(SETSOCKOPT_SIG);
+ extern int (*realgetsockopt)(GETSOCKOPT_SIG);
+ extern int (*realclose)(CLOSE_SIG);
+ extern int (*realgetsockname)(GETSOCKNAME_SIG);
+
+// Direct call
+// - Skips intercept
+// - Uses RPC
+// - Depending on the target, the API will be exposed as zt_* in
+// the specific way needed for that platform, but will be implemented
+// in terms of zts_*
+
+// SOCKS5 Proxy Controls
+int zts_start_proxy_server(const char *homepath, const char * nwid, struct sockaddr_storage * addr);
+int zts_stop_proxy_server(const char *nwid);
+int zts_get_proxy_server_address(const char * nwid, struct sockaddr_storage *addr);
+bool zts_proxy_is_running(const char *nwid);
+
+// ZT Service Controls
+void zts_start_service(const char *path);
+void *zts_start_core_service(void *thread_id);
+void zts_stop_service();
+bool zts_service_is_running();
+void zts_join_network(const char * nwid);
+void zts_leave_network(const char * nwid);
+// void zts_get_addresses(const char * nwid, char * addrstr);
+void zts_get_ipv4_address(const char *nwid, char *addrstr);
+void zts_get_ipv6_address(const char *nwid, char *addrstr);
+int zts_get_device_id();
+bool zts_is_relayed();
+char *zts_get_homepath();
+
+// ZT Intercept/RPC Controls
+// TODO: Remove any?
+//void set_intercept_status(int mode); // TODO: Rethink this
+//void init_service(int key, const char * path);
+//void init_service_and_rpc(int key, const char * path, const char * nwid);
+//void init_intercept(int key);
+
+int zts_socket(SOCKET_SIG);
+int zts_connect(CONNECT_SIG);
+int zts_bind(BIND_SIG);
+#if defined(__linux__)
+ int zts_accept4(ACCEPT4_SIG);
+#endif
+int zts_accept(ACCEPT_SIG);
+int zts_listen(LISTEN_SIG);
+int zts_setsockopt(SETSOCKOPT_SIG);
+int zts_getsockopt(GETSOCKOPT_SIG);
+int zts_getsockname(GETSOCKNAME_SIG);
+int zts_getpeername(GETPEERNAME_SIG);
+int zts_close(CLOSE_SIG);
+int zts_fcntl(FCNTL_SIG);
+
+ssize_t zts_sendto(SENDTO_SIG);
+ssize_t zts_sendmsg(SENDMSG_SIG);
+ssize_t zts_recvfrom(RECVFROM_SIG);
+ssize_t zts_recvmsg(RECVMSG_SIG);
+
+#if defined(__UNITY_3D__)
+ ssize_t zts_recv(int fd, void *buf, int len);
+ ssize_t zts_send(int fd, void *buf, int len);
+ int zts_set_nonblock(int fd); // TODO combine with fcntl()
+#endif
+
+#if !defined(__IOS__)
+ void zt_start_service(const char * path, const char *nwid);
+ void zt_join_network(const char * nwid);
+ void zt_leave_network(const char * nwid);
+#endif
+
+// Android JNI Direct-call API
+// JNI naming convention: Java_PACKAGENAME_CLASSNAME_METHODNAME
+#if defined(__ANDROID__)
+ // ZT SERVICE CONTROLS
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1start_1service(JNIEnv *env, jobject thisObj, jstring path);
+ JNIEXPORT jboolean JNICALL Java_ZeroTier_ZTSDK_zt_1stop_service();
+ JNIEXPORT jboolean JNICALL Java_ZeroTier_ZTSDK_zt_1service_1is_1running(JNIEnv *env, jobject thisObj);
+ JNIEXPORT jstring JNICALL Java_ZeroTier_ZTSDK_zt_1get_1homepath(JNIEnv *env, jobject thisObj);
+ JNIEXPORT void JNICALL Java_ZeroTier_ZTSDK_zt_1join_1network(JNIEnv *env, jobject thisObj, jstring nwid);
+ JNIEXPORT void JNICALL Java_ZeroTier_ZTSDK_zt_1leave_1network(JNIEnv *env, jobject thisObj, jstring nwid);
+ JNIEXPORT jobject JNICALL Java_ZeroTier_ZTSDK_zt_1get_1ipv4_1address(JNIEnv *env, jobject thisObj, jstring nwid);
+ JNIEXPORT jobject JNICALL Java_ZeroTier_ZTSDK_zt_1get_1ipv6_1address(JNIEnv *env, jobject thisObj, jstring nwid);
+ JNIEXPORT jboolean JNICALL Java_ZeroTier_ZTSDK_zt_1is_1relayed();
+
+ // SOCKS5 PROXY SERVER CONTROLS
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1start_1proxy_1server(JNIEnv *env, jobject thisObj, jstring nwid, jobject zaddr);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1stop_1proxy_1server(JNIEnv *env, jobject thisObj, jstring nwid);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1get_1proxy_1server_1address(JNIEnv *env, jobject thisObj, jstring nwid, jobject zaddr);
+ JNIEXPORT jboolean JNICALL Java_ZeroTier_ZTSDK_zt_1proxy_1is_1running(JNIEnv *env, jobject thisObj, jstring nwid);
+
+ // SOCKET API
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1socket(JNIEnv *env, jobject thisObj, jint family, jint type, jint protocol);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1connect(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1bind(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1accept4(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port, jint flags);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1accept(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1listen(JNIEnv *env, jobject thisObj, jint fd, int backlog);
+ // TCP
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1write(JNIEnv *env, jobject thisObj, jint fd, jarray buf, jint len);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1read(JNIEnv *env, jobject thisObj, jint fd, jarray buf, jint len);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1send(JNIEnv *env, jobject thisObj, jint fd, jarray buf, jint len, int flags);
+ // UDP
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1sendto(JNIEnv *env, jobject thisObj, jint fd, jarray buf, jint len, jint flags, jobject ztaddr);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1recvfrom(JNIEnv *env, jobject thisObj, jint fd, jarray buf, jint len, jint flags, jobject ztaddr);
+ // GENERAL UTILITY
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1close(JNIEnv *env, jobject thisObj, jint fd);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1fcntl(JNIEnv *env, jobject thisObj, jint socket, jint cmd, jint flags);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1setsockopt(JNIEnv *env, jobject thisObj, jint fd, jint level, jint optname, jint optval, jint optlen);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1getsockopt(JNIEnv *env, jobject thisObj, jint fd, jint level, jint optname, jint optval, jint optlen);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1getsockname(JNIEnv *env, jobject thisObj, jint fd, jobject ztaddr);
+ JNIEXPORT jint JNICALL Java_ZeroTier_ZTSDK_zt_1getpeername(JNIEnv *env, jobject thisObj, jint fd, jobject ztaddr);
+#endif
+
+
+// Prototypes for redefinition of syscalls
+// - Implemented in SDK_Intercept.c
+#if defined(SDK_INTERCEPT)
+ int socket(SOCKET_SIG);
+ int connect(CONNECT_SIG);
+ int bind(BIND_SIG);
+ #if defined(__linux__)
+ int accept4(ACCEPT4_SIG);
+ #endif
+ int accept(ACCEPT_SIG);
+ int listen(LISTEN_SIG);
+ int setsockopt(SETSOCKOPT_SIG);
+ int getsockopt(GETSOCKOPT_SIG);
+ int getsockname(GETSOCKNAME_SIG);
+ int close(CLOSE_SIG);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _ZT_SDK_H
\ No newline at end of file