/*
* ZeroTier SDK - Network Virtualization Everywhere
* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
*
* 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 .
*
* --
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial closed-source software that incorporates or links
* directly against ZeroTier software without disclosing the source code
* of your own application.
*/
/**
* @file
*
* ZeroTier Socket API
*/
#include
#include "lwip/sockets.h"
#include "lwip/def.h"
#include "ZeroTierConstants.h"
#include "Options.h"
#include "Debug.hpp"
#ifdef SDK_JNI
#include
#endif
namespace ZeroTier {
//////////////////////////////////////////////////////////////////////////////
// ZeroTier Socket API //
//////////////////////////////////////////////////////////////////////////////
extern bool _run_service;
extern bool _run_lwip_tcpip;
#ifdef __cplusplus
extern "C" {
#endif
extern int zts_errno;
#ifdef SDK_JNI
void ss2zta(JNIEnv *env, struct sockaddr_storage *ss, jobject addr);
void zta2ss(JNIEnv *env, struct sockaddr_storage *ss, jobject addr);
void ztfdset2fdset(JNIEnv *env, int nfds, jobject src_ztfd_set, fd_set *dest_fd_set);
void fdset2ztfdset(JNIEnv *env, int nfds, fd_set *src_fd_set, jobject dest_ztfd_set);
#endif
int zts_socket(int socket_family, int socket_type, int protocol)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_socket(socket_family, socket_type, protocol);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_socket(
JNIEnv *env, jobject thisObj, jint family, jint type, jint protocol)
{
int retval = zts_socket(family, type, protocol);
return retval > -1 ? retval : -(zts_errno); // Encode lwip errno in return value for JNI functions only
}
#endif
int zts_connect(int fd, const struct sockaddr *addr, socklen_t addrlen)
{
if (!addr) {
return ZTS_ERR_INVALID_ARG;
}
if (addrlen > (int)sizeof(struct sockaddr_storage) || addrlen < (int)sizeof(struct sockaddr_in)) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_connect(fd, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_connect(
JNIEnv *env, jobject thisObj, jint fd, jobject addr)
{
struct sockaddr_storage ss;
zta2ss(env, &ss, addr);
socklen_t addrlen = ss.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
int retval = zts_connect(fd, (struct sockaddr *)&ss, addrlen);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_bind(int fd, const struct sockaddr *addr, socklen_t addrlen)
{
if (!addr) {
return ZTS_ERR_INVALID_ARG;
}
if (addrlen > (int)sizeof(struct sockaddr_storage) || addrlen < (int)sizeof(struct sockaddr_in)) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_bind(fd, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_bind(
JNIEnv *env, jobject thisObj, jint fd, jobject addr)
{
struct sockaddr_storage ss;
zta2ss(env, &ss, addr);
socklen_t addrlen = ss.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
int retval = zts_bind(fd, (struct sockaddr*)&ss, addrlen);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_listen(int fd, int backlog)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_listen(fd, backlog);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_listen(
JNIEnv *env, jobject thisObj, jint fd, int backlog)
{
int retval = zts_listen(fd, backlog);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_accept(int fd, struct sockaddr *addr, socklen_t *addrlen)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_accept(fd, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_accept(
JNIEnv *env, jobject thisObj, jint fd, jobject addr, jint port)
{
struct sockaddr_storage ss;
socklen_t addrlen = sizeof(struct sockaddr_storage);
int retval = zts_accept(fd, (struct sockaddr *)&ss, &addrlen);
ss2zta(env, &ss, addr);
return retval > -1 ? retval : -(zts_errno);
}
#endif
#if defined(__linux__)
int zts_accept4(int fd, struct sockaddr *addr, socklen_t *addrlen, int flags)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_INVALID_OP : ZTS_ERR_INVALID_OP;
}
#endif
#ifdef SDK_JNI
#if defined(__linux__)
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_accept4(
JNIEnv *env, jobject thisObj, jint fd, jobject addr, jint port, jint flags)
{
struct sockaddr_storage ss;
socklen_t addrlen = sizeof(struct sockaddr_storage);
int retval = zts_accept4(fd, (struct sockaddr *)&ss, &addrlen, flags);
ss2zta(env, &ss, addr);
return retval > -1 ? retval : -(zts_errno);
}
#endif
#endif
int zts_setsockopt(int fd, int level, int optname, const void *optval, socklen_t optlen)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_setsockopt(fd, level, optname, optval, optlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_setsockopt(
JNIEnv *env, jobject thisObj, jint fd, jint level, jint optname, jobject optval)
{
jclass c = env->GetObjectClass(optval);
if (!c) {
return ZTS_ERR_INVALID_OP;
}
int optval_int = -1;
if (optname == SO_BROADCAST
|| optname == SO_KEEPALIVE
|| optname == SO_REUSEADDR
|| optname == SO_REUSEPORT
|| optname == TCP_NODELAY)
{
jfieldID fid = env->GetFieldID(c, "booleanValue", "Z");
optval_int = (int)(env->GetBooleanField(optval, fid));
}
if (optname == IP_TTL
|| optname == SO_RCVTIMEO
|| optname == IP_TOS
|| optname == SO_LINGER
|| optname == SO_RCVBUF
|| optname == SO_SNDBUF)
{
jfieldID fid = env->GetFieldID(c, "integerValue", "I");
optval_int = env->GetIntField(optval, fid);
}
int retval = ZTS_ERR_OK;
if (optname == SO_RCVTIMEO) {
struct timeval tv;
// Convert milliseconds from setSoTimeout() call to seconds and microseconds
tv.tv_usec = optval_int * 1000;
tv.tv_sec = optval_int / 1000000;
retval = zts_setsockopt(fd, level, optname, &tv, sizeof(tv));
}
else {
retval = zts_setsockopt(fd, level, optname, &optval_int, sizeof(optval_int));
}
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_getsockopt(int fd, int level, int optname, void *optval, socklen_t *optlen)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_getsockopt(fd, level, optname, optval, optlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_getsockopt(
JNIEnv *env, jobject thisObj, jint fd, jint level, jint optname, jobject optval)
{
jclass c = env->GetObjectClass(optval);
if (!c) {
return ZTS_ERR_INVALID_OP;
}
int optval_int = 0;
socklen_t optlen; // Intentionally not used
int retval;
if (optname == SO_RCVTIMEO) {
struct timeval tv;
optlen = sizeof(tv);
retval = zts_getsockopt(fd, level, optname, &tv, &optlen);
// Convert seconds and microseconds back to milliseconds
optval_int = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
}
else {
retval = zts_getsockopt(fd, level, optname, &optval_int, &optlen);
}
if (optname == SO_BROADCAST
|| optname == SO_KEEPALIVE
|| optname == SO_REUSEADDR
|| optname == SO_REUSEPORT
|| optname == TCP_NODELAY)
{
jfieldID fid = env->GetFieldID(c, "isBoolean", "Z");
env->SetBooleanField(optval, fid, true);
fid = env->GetFieldID(c, "booleanValue", "Z");
env->SetBooleanField(optval, fid, (bool)optval_int);
}
if (optname == IP_TTL
|| optname == SO_RCVTIMEO
|| optname == IP_TOS
|| optname == SO_LINGER
|| optname == SO_RCVBUF
|| optname == SO_SNDBUF)
{
jfieldID fid = env->GetFieldID(c, "isInteger", "Z");
env->SetBooleanField(optval, fid, true);
fid = env->GetFieldID(c, "integerValue", "I");
env->SetIntField(optval, fid, optval_int);
}
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_getsockname(int fd, struct sockaddr *addr, socklen_t *addrlen)
{
if (!addr) {
return ZTS_ERR_INVALID_ARG;
}
if (*addrlen > (int)sizeof(struct sockaddr_storage) || *addrlen < (int)sizeof(struct sockaddr_in)) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_getsockname(fd, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jboolean JNICALL Java_com_zerotier_libzt_ZeroTier_getsockname(JNIEnv *env, jobject thisObj,
jint fd, jobject addr)
{
struct sockaddr_storage ss;
socklen_t addrlen = sizeof(struct sockaddr_storage);
int retval =zts_getsockname(fd, (struct sockaddr *)&ss, &addrlen);
ss2zta(env, &ss, addr);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_getpeername(int fd, struct sockaddr *addr, socklen_t *addrlen)
{
if (!addr) {
return ZTS_ERR_INVALID_ARG;
}
if (*addrlen > (int)sizeof(struct sockaddr_storage) || *addrlen < (int)sizeof(struct sockaddr_in)) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_getpeername(fd, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_getpeername(JNIEnv *env, jobject thisObj,
jint fd, jobject addr)
{
struct sockaddr_storage ss;
int retval = zts_getpeername(fd, (struct sockaddr *)&ss, (socklen_t *)sizeof(struct sockaddr_storage));
ss2zta(env, &ss, addr);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_gethostname(char *name, size_t len)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_INVALID_OP : ZTS_ERR_INVALID_OP; // TODO
}
#ifdef SDK_JNI
#endif
int zts_sethostname(const char *name, size_t len)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_INVALID_OP : ZTS_ERR_INVALID_OP; // TODO
}
#ifdef SDK_JNI
#endif
/*
struct hostent *zts_gethostbyname(const char *name)
{
return (struct hostent *)((!_run_service || !_run_lwip_tcpip) ? NULL : NULL);
// TODO: Test thread safety
char buf[256];
int buflen = 256;
int h_err = 0;
struct hostent hret;
struct hostent **result = NULL;
int err = 0;
if ((err = lwip_gethostbyname_r(name, &hret, buf, buflen, result, &h_err)) != 0) {
DEBUG_ERROR("err = %d", err);
DEBUG_ERROR("h_err = %d", h_err);
errno = h_err;
return NULL; // failure
}
return *result;
return lwip_gethostbyname(name);
}
#ifdef SDK_JNI
#endif
*/
int zts_close(int fd)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_close(fd);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_close(
JNIEnv *env, jobject thisObj, jint fd)
{
return zts_close(fd);
}
#endif
int zts_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
struct timeval *timeout)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_select(nfds, readfds, writefds, exceptfds, timeout);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_select(JNIEnv *env, jobject thisObj,
jint nfds, jobject readfds, jobject writefds, jobject exceptfds, jint timeout_sec, jint timeout_usec)
{
struct timeval _timeout;
_timeout.tv_sec = timeout_sec;
_timeout.tv_usec = timeout_usec;
fd_set _readfds, _writefds, _exceptfds;
fd_set *r = NULL;
fd_set *w = NULL;
fd_set *e = NULL;
if (readfds) {
r = &_readfds;
ztfdset2fdset(env, nfds, readfds, &_readfds);
}
if (writefds) {
w = &_writefds;
ztfdset2fdset(env, nfds, writefds, &_writefds);
}
if (exceptfds) {
e = &_exceptfds;
ztfdset2fdset(env, nfds, exceptfds, &_exceptfds);
}
int retval = zts_select(nfds, r, w, e, &_timeout);
if (readfds) {
fdset2ztfdset(env, nfds, &_readfds, readfds);
}
if (writefds) {
fdset2ztfdset(env, nfds, &_writefds, writefds);
}
if (exceptfds) {
fdset2ztfdset(env, nfds, &_exceptfds, exceptfds);
}
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_fcntl(int fd, int cmd, int flags)
{
// translation from platform flag values to stack flag values
int translated_flags = 0;
#if defined(__linux__)
if (flags == 2048) {
translated_flags = 1;
}
#endif
#if defined(__APPLE__)
if (flags == 4) {
translated_flags = 1;
}
#endif
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_fcntl(fd, cmd, translated_flags);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_fcntl(
JNIEnv *env, jobject thisObj, jint fd, jint cmd, jint flags)
{
int retval = zts_fcntl(fd, cmd, flags);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_ioctl(int fd, unsigned long request, void *argp)
{
if (!argp) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_ioctl(fd, request, argp);
}
#ifdef SDK_JNI
JNIEXPORT int JNICALL Java_com_zerotier_libzt_ZeroTier_ioctl(
JNIEnv *env, jobject thisObj, jint fd, jlong request, jobject argp)
{
int retval = ZTS_ERR_OK;
if (request == FIONREAD) {
// DEBUG_ERROR("FIONREAD");
int bytesRemaining = 0;
retval = zts_ioctl(fd, request, &bytesRemaining);
// set value in general object
jclass c = env->GetObjectClass(argp);
if (!c) {
return ZTS_ERR_INVALID_ARG;
}
jfieldID fid = env->GetFieldID(c, "integer", "I");
env->SetIntField(argp, fid, bytesRemaining);
}
if (request == FIONBIO) {
// TODO: double check
int meaninglessVariable = 0;
// DEBUG_ERROR("FIONBIO");
retval = zts_ioctl(fd, request, &meaninglessVariable);
}
return retval > -1 ? retval : -(zts_errno);
}
#endif
ssize_t zts_send(int fd, const void *buf, size_t len, int flags)
{
if (!buf || len <= 0) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_send(fd, buf, len, flags);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_send(
JNIEnv *env, jobject thisObj, jint fd, jbyteArray buf, int flags)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_send(fd, data, env->GetArrayLength(buf), flags);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
#endif
ssize_t zts_sendto(int fd, const void *buf, size_t len, int flags,
const struct sockaddr *addr, socklen_t addrlen)
{
if (!addr || !buf || len <= 0) {
return ZTS_ERR_INVALID_ARG;
}
if (addrlen > (int)sizeof(struct sockaddr_storage) || addrlen < (int)sizeof(struct sockaddr_in)) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_sendto(fd, buf, len, flags, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_sendto(
JNIEnv *env, jobject thisObj, jint fd, jbyteArray buf, jint flags, jobject addr)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
struct sockaddr_storage ss;
zta2ss(env, &ss, addr);
socklen_t addrlen = ss.ss_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
int retval = zts_sendto(fd, data, env->GetArrayLength(buf), flags, (struct sockaddr *)&ss, addrlen);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
#endif
ssize_t zts_sendmsg(int fd, const struct msghdr *msg, int flags)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_sendmsg(fd, msg, flags);
}
#ifdef SDK_JNI
#endif
ssize_t zts_recv(int fd, void *buf, size_t len, int flags)
{
if (!buf) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_recv(fd, buf, len, flags);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_recv(JNIEnv *env, jobject thisObj,
jint fd, jbyteArray buf, jint flags)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_recv(fd, data, env->GetArrayLength(buf), flags);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
#endif
ssize_t zts_recvfrom(int fd, void *buf, size_t len, int flags,
struct sockaddr *addr, socklen_t *addrlen)
{
if (!buf) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_recvfrom(fd, buf, len, flags, addr, addrlen);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_recvfrom(
JNIEnv *env, jobject thisObj, jint fd, jbyteArray buf, jint flags, jobject addr)
{
socklen_t addrlen = sizeof(struct sockaddr_storage);
struct sockaddr_storage ss;
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_recvfrom(fd, data, env->GetArrayLength(buf), flags, (struct sockaddr *)&ss, &addrlen);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
ss2zta(env, &ss, addr);
return retval > -1 ? retval : -(zts_errno);
}
#endif
ssize_t zts_recvmsg(int fd, struct msghdr *msg, int flags)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : -1; // Not currently implemented by stack
}
#ifdef SDK_JNI
#endif
int zts_read(int fd, void *buf, size_t len)
{
if (!buf) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_read(fd, buf, len);
}
int zts_read_offset(int fd, void *buf, size_t offset, size_t len)
{
if (!buf) {
return ZTS_ERR_INVALID_ARG;
}
char *cbuf = (char*)buf;
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_read(fd, &(cbuf[offset]), len);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_read(JNIEnv *env, jobject thisObj,
jint fd, jbyteArray buf)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_read(fd, data, env->GetArrayLength(buf));
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_read_1offset(JNIEnv *env, jobject thisObj,
jint fd, jbyteArray buf, jint offset, jint len)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_read_offset(fd, data, offset, len);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_read_1length(JNIEnv *env, jobject thisObj,
jint fd, jbyteArray buf, jint len)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_read(fd, data, len);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_write(int fd, const void *buf, size_t len)
{
if (!buf || len <= 0) {
return ZTS_ERR_INVALID_ARG;
}
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_write(fd, buf, len);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_write__IB(JNIEnv *env, jobject thisObj,
jint fd, jbyteArray buf)
{
void *data = env->GetPrimitiveArrayCritical(buf, NULL);
int retval = zts_write(fd, data, env->GetArrayLength(buf));
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_write_1offset(JNIEnv *env, jobject thisObj,
jint fd, jbyteArray buf, jint offset, jint len)
{
void *data = env->GetPrimitiveArrayCritical(&(buf[offset]), NULL); // PENDING: check?
int retval = zts_write(fd, data, len);
env->ReleasePrimitiveArrayCritical(buf, data, 0);
return retval > -1 ? retval : -(zts_errno);
}
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_write_1byte(JNIEnv *env, jobject thisObj,
jint fd, jbyte buf)
{
int retval = zts_write(fd, &buf, 1);
return retval > -1 ? retval : -(zts_errno);
}
#endif
int zts_shutdown(int fd, int how)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : lwip_shutdown(fd, how);
}
#ifdef SDK_JNI
JNIEXPORT jint JNICALL Java_com_zerotier_libzt_ZeroTier_shutdown(
JNIEnv *env, jobject thisObj, int fd, int how)
{
return zts_shutdown(fd, how);
}
#endif
int zts_add_dns_nameserver(struct sockaddr *addr)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : -1; // TODO
}
#ifdef SDK_JNI
#endif
int zts_del_dns_nameserver(struct sockaddr *addr)
{
return (!_run_service || !_run_lwip_tcpip) ? ZTS_ERR_SERVICE : -1; // TODO
}
#ifdef SDK_JNI
#endif
#ifdef SDK_JNI
void ztfdset2fdset(JNIEnv *env, int nfds, jobject src_ztfd_set, fd_set *dest_fd_set)
{
jclass c = env->GetObjectClass(src_ztfd_set);
if (!c) {
return;
}
FD_ZERO(dest_fd_set);
jfieldID fid = env->GetFieldID(c, "fds_bits", "[B");
jobject fdData = env->GetObjectField (src_ztfd_set, fid);
jbyteArray * arr = reinterpret_cast(&fdData);
char *data = (char*)env->GetByteArrayElements(*arr, NULL);
for (int i=0; iReleaseByteArrayElements(*arr, (jbyte*)data, 0);
return;
}
void fdset2ztfdset(JNIEnv *env, int nfds, fd_set *src_fd_set, jobject dest_ztfd_set)
{
jclass c = env->GetObjectClass(dest_ztfd_set);
if (!c) {
return;
}
jfieldID fid = env->GetFieldID(c, "fds_bits", "[B");
jobject fdData = env->GetObjectField (dest_ztfd_set, fid);
jbyteArray * arr = reinterpret_cast(&fdData);
char *data = (char*)env->GetByteArrayElements(*arr, NULL);
for (int i=0; iReleaseByteArrayElements(*arr, (jbyte*)data, 0);
return;
}
//////////////////////////////////////////////////////////////////////////////
// Helpers (for moving data across the JNI barrier) //
//////////////////////////////////////////////////////////////////////////////
void ss2zta(JNIEnv *env, struct sockaddr_storage *ss, jobject addr)
{
jclass c = env->GetObjectClass(addr);
if (!c) {
return;
}
if(ss->ss_family == AF_INET)
{
struct sockaddr_in *in4 = (struct sockaddr_in*)ss;
jfieldID fid = env->GetFieldID(c, "_port", "I");
env->SetIntField(addr, fid, lwip_ntohs(in4->sin_port));
fid = env->GetFieldID(c,"_family", "I");
env->SetIntField(addr, fid, (in4->sin_family));
fid = env->GetFieldID(c, "_ip4", "[B");
jobject ipData = env->GetObjectField (addr, fid);
jbyteArray * arr = reinterpret_cast(&ipData);
char *data = (char*)env->GetByteArrayElements(*arr, NULL);
memcpy(data, &(in4->sin_addr.s_addr), 4);
env->ReleaseByteArrayElements(*arr, (jbyte*)data, 0);
return;
}
if(ss->ss_family == AF_INET6)
{
struct sockaddr_in6 *in6 = (struct sockaddr_in6*)ss;
jfieldID fid = env->GetFieldID(c, "_port", "I");
env->SetIntField(addr, fid, lwip_ntohs(in6->sin6_port));
fid = env->GetFieldID(c,"_family", "I");
env->SetIntField(addr, fid, (in6->sin6_family));
fid = env->GetFieldID(c, "_ip6", "[B");
jobject ipData = env->GetObjectField (addr, fid);
jbyteArray * arr = reinterpret_cast(&ipData);
char *data = (char*)env->GetByteArrayElements(*arr, NULL);
memcpy(data, &(in6->sin6_addr.s6_addr), 16);
env->ReleaseByteArrayElements(*arr, (jbyte*)data, 0);
return;
}
}
void zta2ss(JNIEnv *env, struct sockaddr_storage *ss, jobject addr)
{
jclass c = env->GetObjectClass(addr);
if (!c) {
return;
}
jfieldID fid = env->GetFieldID(c, "_family", "I");
int family = env->GetIntField(addr, fid);
if (family == AF_INET)
{
struct sockaddr_in *in4 = (struct sockaddr_in*)ss;
fid = env->GetFieldID(c, "_port", "I");
in4->sin_port = lwip_htons(env->GetIntField(addr, fid));
in4->sin_family = AF_INET;
fid = env->GetFieldID(c, "_ip4", "[B");
jobject ipData = env->GetObjectField (addr, fid);
jbyteArray * arr = reinterpret_cast(&ipData);
char *data = (char*)env->GetByteArrayElements(*arr, NULL);
memcpy(&(in4->sin_addr.s_addr), data, 4);
env->ReleaseByteArrayElements(*arr, (jbyte*)data, 0);
return;
}
if (family == AF_INET6)
{
struct sockaddr_in6 *in6 = (struct sockaddr_in6*)ss;
jfieldID fid = env->GetFieldID(c, "_port", "I");
in6->sin6_port = lwip_htons(env->GetIntField(addr, fid));
fid = env->GetFieldID(c,"_family", "I");
in6->sin6_family = AF_INET6;
fid = env->GetFieldID(c, "_ip6", "[B");
jobject ipData = env->GetObjectField (addr, fid);
jbyteArray * arr = reinterpret_cast(&ipData);
char *data = (char*)env->GetByteArrayElements(*arr, NULL);
memcpy(&(in6->sin6_addr.s6_addr), data, 16);
env->ReleaseByteArrayElements(*arr, (jbyte*)data, 0);
return;
}
}
#endif // JNI
#ifdef __cplusplus
}
#endif
} // namespace ZeroTier