152 lines
5.2 KiB
C
152 lines
5.2 KiB
C
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2015 ZeroTier, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef _ZT_SDK_H
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#define _ZT_SDK_H 1
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#include <sys/socket.h>
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#include <stdbool.h>
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#include "SDK_Signatures.h"
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#if defined(__ANDROID__)
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// For defining the Android direct-call API
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#include <jni.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define INTERCEPT_ENABLED 111
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#define INTERCEPT_DISABLED 222
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extern void load_symbols();
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extern void zt_init_rpc(const char *path, const char *nwid);
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extern char *api_netpath;
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extern char *debug_logfile;
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// Function pointers to original system calls
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// - These are used when we detect that either the intercept is not
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// available or that ZeroTier hasn't administered the given socket
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#if defined(__linux__)
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extern int (*realaccept4)(ACCEPT4_SIG);
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#if !defined(__ANDROID__)
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extern int (*realsyscall)(SYSCALL_SIG);
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#endif
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#endif
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#if !defined(__ANDROID__)
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bool check_intercept_enabled();
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extern int (*realbind)(BIND_SIG);
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extern int (*realsendmsg)(SENDMSG_SIG);
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extern ssize_t (*realsendto)(SENDTO_SIG);
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extern int (*realrecvmsg)(RECVMSG_SIG);
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extern int (*realrecvfrom)(RECVFROM_SIG);
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#endif
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extern int (*realconnect)(CONNECT_SIG);
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extern int (*realaccept)(ACCEPT_SIG);
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extern int (*reallisten)(LISTEN_SIG);
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extern int (*realsocket)(SOCKET_SIG);
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extern int (*realsetsockopt)(SETSOCKOPT_SIG);
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extern int (*realgetsockopt)(GETSOCKOPT_SIG);
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extern int (*realclose)(CLOSE_SIG);
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extern int (*realgetsockname)(GETSOCKNAME_SIG);
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// Direct call
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// - Skips intercept
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// - Uses RPC
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// - Depending on the target, the API will be exposed as zt_* in
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// the specific way needed for that platform, but will be implemented
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// in terms of zts_*
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int zts_socket(SOCKET_SIG);
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int zts_connect(CONNECT_SIG);
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int zts_bind(BIND_SIG);
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#if defined(__linux__)
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int zts_accept4(ACCEPT4_SIG);
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#endif
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int zts_accept(ACCEPT_SIG);
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int zts_listen(LISTEN_SIG);
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int zts_setsockopt(SETSOCKOPT_SIG);
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int zts_getsockopt(GETSOCKOPT_SIG);
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int zts_getsockname(GETSOCKNAME_SIG);
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int zts_close(CLOSE_SIG);
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ssize_t zts_sendto(SENDTO_SIG);
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ssize_t zts_sendmsg(SENDMSG_SIG);
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ssize_t zts_recvfrom(RECVFROM_SIG);
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ssize_t zts_recvmsg(RECVMSG_SIG);
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#if defined(__UNITY_3D__)
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ssize_t zts_recv(int fd, void *buf, int len);
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ssize_t zts_send(int fd, void *buf, int len);
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int zts_set_nonblock(int fd);
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#endif
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// Android JNI Direct-call API
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// - Implemented in terms of zt_* direct calls
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#if defined(__ANDROID__)
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1socket(JNIEnv *env, jobject thisObj, jint family, jint type, jint protocol);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1connect(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1bind(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1accept4(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port, jint flags);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1accept(JNIEnv *env, jobject thisObj, jint fd, jstring addrstr, jint port);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1listen(JNIEnv *env, jobject thisObj, jint fd, int backlog);
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//JNIEXPORT void JNICALL Java_ZeroTier_SDK_zt_1setsockopt(JNIEnv *env, jobject thisObj);
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//JNIEXPORT void JNICALL Java_ZeroTier_SDK_zt_1getsockopt(JNIEnv *env, jobject thisObj);
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//JNIEXPORT void JNICALL Java_ZeroTier_SDK_zt_1getsockname(JNIEnv *env, jobject thisObj);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1close(JNIEnv *env, jobject thisObj, jint fd);
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// Takes a given numerical file descriptor and manufactures a java FileDescriptor object for use in javaland
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JNIEXPORT jobject JNICALL Java_ZeroTier_SDK_zt_1getFileDescriptor(JNIEnv *env, jobject thisObj, jint fd);
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JNIEXPORT jint JNICALL Java_ZeroTier_SDK_zt_1write(JNIEnv *env, jobject thisObj, jint fd, jarray buf, jint len);
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#endif
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// Prototypes for redefinition of syscalls
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// - Implemented in SDK_Intercept.c
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#if defined(SDK_INTERCEPT)
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int socket(SOCKET_SIG);
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int connect(CONNECT_SIG);
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int bind(BIND_SIG);
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#if defined(__linux__)
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int accept4(ACCEPT4_SIG);
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#endif
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int accept(ACCEPT_SIG);
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int listen(LISTEN_SIG);
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int setsockopt(SETSOCKOPT_SIG);
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int getsockopt(GETSOCKOPT_SIG);
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int getsockname(GETSOCKNAME_SIG);
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int close(CLOSE_SIG);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // _ZT_SDK_H
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