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Static library which contains common unix utilities.
/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "netty_unix_errors.h"
#include "netty_unix_jni.h"
#include "netty_unix_socket.h"
#include "netty_unix_util.h"
#include "netty_jni_util.h"
#define SOCKET_CLASSNAME "io/netty/channel/unix/Socket"
// Define SO_REUSEPORT if not found to fix build issues.
// See https://github.com/netty/netty/issues/2558
#ifndef SO_REUSEPORT
#define SO_REUSEPORT 15
#endif /* SO_REUSEPORT */
// MSG_FASTOPEN is defined in linux 3.6. We define this here so older kernels can compile.
#ifndef MSG_FASTOPEN
#define MSG_FASTOPEN 0x20000000
#endif
static jweak datagramSocketAddressClassWeak = NULL;
static jweak domainDatagramSocketAddressClassWeak = NULL;
static jmethodID datagramSocketAddrMethodId = NULL;
static jmethodID domainDatagramSocketAddrMethodId = NULL;
static jmethodID inetSocketAddrMethodId = NULL;
static jclass inetSocketAddressClass = NULL;
static const unsigned char wildcardAddress[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const unsigned char ipv4MappedWildcardAddress[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
static const unsigned char ipv4MappedAddress[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff };
// Optional external methods
extern int accept4(int sockFd, struct sockaddr* addr, socklen_t* addrlen, int flags) __attribute__((weak)) __attribute__((weak_import));
// macro to calculate the length of a sockaddr_un struct for a given path length.
// see sys/un.h#SUN_LEN, this is modified to allow nul bytes
#define _UNIX_ADDR_LENGTH(path_len) ((uintptr_t) offsetof(struct sockaddr_un, sun_path) + (uintptr_t) path_len)
int netty_unix_socket_nonBlockingSocket(int domain, int type, int protocol) {
#ifdef SOCK_NONBLOCK
return socket(domain, type | SOCK_NONBLOCK, protocol);
#else
int socketFd = socket(domain, type, protocol);
int flags;
// Don't initialize flags until we know the socket is good so errno is preserved.
if (socketFd < 0 ||
(flags = fcntl(socketFd, F_GETFL, 0)) < 0 ||
fcntl(socketFd, F_SETFL, flags | O_NONBLOCK) < 0) {
return -1;
}
return socketFd;
#endif
}
int netty_unix_socket_ipAddressLength(const struct sockaddr_storage* addr) {
if (addr->ss_family == AF_INET) {
return 4;
}
struct sockaddr_in6* s = (struct sockaddr_in6*) addr;
if (memcmp(s->sin6_addr.s6_addr, ipv4MappedAddress, 12) == 0) {
// IPv4-mapped-on-IPv6
return 4;
}
return 16;
}
static jobject createDatagramSocketAddress(JNIEnv* env, const struct sockaddr_storage* addr, int len, jobject local) {
jclass datagramSocketAddressClass = NULL;
jobject obj = NULL;
int port;
int scopeId;
int ipLength = netty_unix_socket_ipAddressLength(addr);
jbyteArray addressBytes = (*env)->NewByteArray(env, ipLength);
if (addressBytes == NULL) {
return NULL;
}
if (addr->ss_family == AF_INET) {
struct sockaddr_in* s = (struct sockaddr_in*) addr;
port = ntohs(s->sin_port);
scopeId = 0;
(*env)->SetByteArrayRegion(env, addressBytes, 0, ipLength, (jbyte*) &s->sin_addr.s_addr);
} else {
struct sockaddr_in6* s = (struct sockaddr_in6*) addr;
port = ntohs(s->sin6_port);
scopeId = s->sin6_scope_id;
int offset;
if (ipLength == 4) {
// IPv4-mapped-on-IPv6.
offset = 12;
} else {
offset = 0;
}
jbyte* addr = (jbyte*) &s->sin6_addr.s6_addr;
(*env)->SetByteArrayRegion(env, addressBytes, 0, ipLength, addr + offset);
}
NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, datagramSocketAddressClass, datagramSocketAddressClassWeak, done);
obj = (*env)->NewObject(env, datagramSocketAddressClass, datagramSocketAddrMethodId, addressBytes, scopeId, port, len, local);
if ((*env)->ExceptionCheck(env) == JNI_TRUE) {
obj = NULL;
goto done;
}
done:
NETTY_JNI_UTIL_DELETE_LOCAL(env, datagramSocketAddressClass);
return obj;
}
static jobject createDomainDatagramSocketAddress(JNIEnv* env, const struct sockaddr_storage* addr, int len, jobject local) {
jclass domainDatagramSocketAddressClass = NULL;
jobject obj = NULL;
struct sockaddr_un* s = (struct sockaddr_un*) addr;
int pathLength = strlen(s->sun_path);
jbyteArray pathBytes = (*env)->NewByteArray(env, pathLength);
if (pathBytes == NULL) {
return NULL;
}
(*env)->SetByteArrayRegion(env, pathBytes, 0, pathLength, (jbyte*) &s->sun_path);
NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, domainDatagramSocketAddressClass, domainDatagramSocketAddressClassWeak, done);
obj = (*env)->NewObject(env, domainDatagramSocketAddressClass, domainDatagramSocketAddrMethodId, pathBytes, len, local);
if ((*env)->ExceptionCheck(env) == JNI_TRUE) {
return NULL;
}
done:
NETTY_JNI_UTIL_DELETE_LOCAL(env, domainDatagramSocketAddressClass);
return obj;
}
static jbyteArray netty_unix_socket_createDomainSocketAddressArray(JNIEnv* env, const struct sockaddr_storage* addr) {
struct sockaddr_un* s = (struct sockaddr_un*) addr;
int pathLength = strlen(s->sun_path);
jbyteArray pathBytes = (*env)->NewByteArray(env, pathLength);
if (pathBytes == NULL) {
return NULL;
}
(*env)->SetByteArrayRegion(env, pathBytes, 0, pathLength, (jbyte*) &s->sun_path);
return pathBytes;
}
static jsize addressLength(const struct sockaddr_storage* addr) {
int len = netty_unix_socket_ipAddressLength(addr);
if (len == 4) {
// Only encode port into it
return len + 4;
}
// we encode port + scope into it
return len + 8;
}
static void initInetSocketAddressArray(JNIEnv* env, const struct sockaddr_storage* addr, jbyteArray bArray, int offset, jsize len) {
int port;
if (addr->ss_family == AF_INET) {
struct sockaddr_in* s = (struct sockaddr_in*) addr;
port = ntohs(s->sin_port);
// Encode address and port into the array
unsigned char a[4];
a[0] = port >> 24;
a[1] = port >> 16;
a[2] = port >> 8;
a[3] = port;
(*env)->SetByteArrayRegion(env, bArray, offset, 4, (jbyte*) &s->sin_addr.s_addr);
(*env)->SetByteArrayRegion(env, bArray, offset + 4, 4, (jbyte*) &a);
} else {
struct sockaddr_in6* s = (struct sockaddr_in6*) addr;
port = ntohs(s->sin6_port);
if (len == 8) {
// IPv4-mapped-on-IPv6
// Encode port into the array and write it into the jbyteArray
unsigned char a[4];
a[0] = port >> 24;
a[1] = port >> 16;
a[2] = port >> 8;
a[3] = port;
// we only need the last 4 bytes for mapped address
(*env)->SetByteArrayRegion(env, bArray, offset, 4, (jbyte*) &(s->sin6_addr.s6_addr[12]));
(*env)->SetByteArrayRegion(env, bArray, offset + 4, 4, (jbyte*) &a);
} else {
// Encode scopeid and port into the array
unsigned char a[8];
a[0] = s->sin6_scope_id >> 24;
a[1] = s->sin6_scope_id >> 16;
a[2] = s->sin6_scope_id >> 8;
a[3] = s->sin6_scope_id;
a[4] = port >> 24;
a[5] = port >> 16;
a[6] = port >> 8;
a[7] = port;
(*env)->SetByteArrayRegion(env, bArray, offset, 16, (jbyte*) &(s->sin6_addr.s6_addr));
(*env)->SetByteArrayRegion(env, bArray, offset + 16, 8, (jbyte*) &a);
}
}
}
jbyteArray netty_unix_socket_createInetSocketAddressArray(JNIEnv* env, const struct sockaddr_storage* addr) {
jsize len = addressLength(addr);
jbyteArray bArray = (*env)->NewByteArray(env, len);
if (bArray == NULL) {
return NULL;
}
initInetSocketAddressArray(env, addr, bArray, 0, len);
return bArray;
}
static jboolean netty_unix_socket_isIPv6Preferred0(JNIEnv* env, jclass clazz, jboolean ipv4Preferred) {
if (ipv4Preferred) {
// User asked to use ipv4 explicitly.
return JNI_FALSE;
}
int fd = netty_unix_socket_nonBlockingSocket(AF_INET6, SOCK_STREAM, 0);
if (fd == -1) {
return errno == EAFNOSUPPORT ? JNI_FALSE : JNI_TRUE;
}
// Explicitly try to bind to ::1 to ensure IPV6 can really be used.
// See https://github.com/netty/netty/issues/7021.
struct sockaddr_in6 addr;
memset(&addr, 0, sizeof(addr));
addr.sin6_family = AF_INET6;
addr.sin6_addr.s6_addr[15] = 1; /* [::1]:0 */
int res = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
close(fd);
return res == 0 ? JNI_TRUE : JNI_FALSE;
}
static jboolean netty_unix_socket_isIPv6(JNIEnv* env, jclass clazz, jint fd) {
struct sockaddr_storage addr;
socklen_t addrlen = sizeof(addr);
if (getsockname(fd, (struct sockaddr*) &addr, &addrlen) == 0) {
return ((struct sockaddr*) &addr)->sa_family == AF_INET6;
}
netty_unix_errors_throwChannelExceptionErrorNo(env, "getsockname(...) failed: ", errno);
return JNI_FALSE;
}
static void netty_unix_socket_optionHandleError(JNIEnv* env, int err, char* method) {
if (err == EBADF) {
netty_unix_errors_throwClosedChannelException(env);
} else {
netty_unix_errors_throwChannelExceptionErrorNo(env, method, err);
}
}
static void netty_unix_socket_setOptionHandleError(JNIEnv* env, int err) {
netty_unix_socket_optionHandleError(env, err, "setsockopt() failed: ");
}
static int netty_unix_socket_setOption0(jint fd, int level, int optname, const void* optval, socklen_t len) {
return setsockopt(fd, level, optname, optval, len);
}
static jint _socket(JNIEnv* env, jclass clazz, int domain, int type) {
int fd = netty_unix_socket_nonBlockingSocket(domain, type, 0);
if (fd == -1) {
return -errno;
} else if (domain == AF_INET6) {
// Try to allow listen /connect ipv4 and ipv6
int optval = 0;
if (netty_unix_socket_setOption0(fd, IPPROTO_IPV6, IPV6_V6ONLY, &optval, sizeof(optval)) < 0) {
if (errno != EAFNOSUPPORT) {
netty_unix_socket_setOptionHandleError(env, errno);
// Something went wrong so close the fd and return here. setOption(...) itself throws the exception already.
close(fd);
return -1;
}
// else we failed to enable dual stack mode.
// It is assumed the socket is re‐stricted to sending and receiving IPv6 packets only.
// Don't close fd and don't return -1. At best we can do is log.
// TODO: bubble this up to an actual Logger.
}
}
return fd;
}
int netty_unix_socket_initSockaddr(JNIEnv* env, jboolean ipv6, jbyteArray address, jint scopeId, jint jport,
const struct sockaddr_storage* addr, socklen_t* addrSize) {
uint16_t port = htons((uint16_t) jport);
// We use 16 bytes as this allows us to fit ipv6, ipv4 and ipv4 mapped ipv6 addresses in the array.
jbyte addressBytes[16];
int len = (*env)->GetArrayLength(env, address);
if (len > 16) {
// This should never happen but let's guard against it anyway.
return -1;
}
// We use GetByteArrayRegion(...) and copy into a small stack allocated buffer and NOT GetPrimitiveArrayCritical(...)
// as there are still multiple GCLocker related bugs which are not fixed yet.
//
// For example:
// https://bugs.openjdk.java.net/browse/JDK-8048556
// https://bugs.openjdk.java.net/browse/JDK-8057573
// https://bugs.openjdk.java.net/browse/JDK-8057586
(*env)->GetByteArrayRegion(env, address, 0, len, addressBytes);
if (ipv6 == JNI_TRUE) {
struct sockaddr_in6* ip6addr = (struct sockaddr_in6*) addr;
*addrSize = sizeof(struct sockaddr_in6);
ip6addr->sin6_family = AF_INET6;
ip6addr->sin6_port = port;
ip6addr->sin6_flowinfo = 0;
ip6addr->sin6_scope_id = (uint32_t) scopeId;
// check if this is an any address and if so we need to handle it like this.
if (memcmp(addressBytes, wildcardAddress, 16) == 0 || memcmp(addressBytes, ipv4MappedWildcardAddress, 16) == 0) {
ip6addr->sin6_addr = in6addr_any;
} else {
memcpy(&(ip6addr->sin6_addr.s6_addr), addressBytes, 16);
}
} else {
struct sockaddr_in* ipaddr = (struct sockaddr_in*) addr;
*addrSize = sizeof(struct sockaddr_in);
ipaddr->sin_family = AF_INET;
ipaddr->sin_port = port;
memcpy(&(ipaddr->sin_addr.s_addr), addressBytes + 12, 4);
}
return 0;
}
static jint _sendTo(JNIEnv* env, jint fd, jboolean ipv6, void* buffer, jint pos, jint limit, jbyteArray address, jint scopeId, jint port, jint flags) {
struct sockaddr_storage addr;
socklen_t addrSize;
if (netty_unix_socket_initSockaddr(env, ipv6, address, scopeId, port, &addr, &addrSize) == -1) {
return -1;
}
ssize_t res;
int err;
do {
res = sendto(fd, buffer + pos, (size_t) (limit - pos), flags, (struct sockaddr*) &addr, addrSize);
// keep on writing if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return (jint) res;
}
static jint _sendToDomainSocket(JNIEnv* env, jint fd, void* buffer, jint pos, jint limit, jbyteArray socketPath) {
struct sockaddr_un addr;
jint socket_path_len;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
jbyte* socket_path = (*env)->GetByteArrayElements(env, socketPath, 0);
if (socket_path == NULL) {
return -1;
}
socket_path_len = (*env)->GetArrayLength(env, socketPath);
if (socket_path_len > sizeof(addr.sun_path)) {
socket_path_len = sizeof(addr.sun_path);
}
memcpy(addr.sun_path, socket_path, socket_path_len);
ssize_t res;
int err;
do {
res = sendto(fd, buffer + pos, (size_t) (limit - pos), 0, (struct sockaddr*) &addr, _UNIX_ADDR_LENGTH(socket_path_len));
// keep on writing if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
(*env)->ReleaseByteArrayElements(env, socketPath, socket_path, 0);
if (res < 0) {
return -err;
}
return (jint) res;
}
static jobject _recvFrom(JNIEnv* env, jint fd, void* buffer, jint pos, jint limit) {
struct sockaddr_storage addr;
socklen_t addrlen = sizeof(addr);
ssize_t res;
int err;
do {
res = recvfrom(fd, buffer + pos, (size_t) (limit - pos), 0, (struct sockaddr*) &addr, &addrlen);
// Keep on reading if we was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
if (err == EAGAIN || err == EWOULDBLOCK) {
// Nothing left to read
return NULL;
}
if (err == EBADF) {
netty_unix_errors_throwClosedChannelException(env);
return NULL;
}
if (err == ECONNREFUSED) {
netty_unix_errors_throwPortUnreachableException(env, "recvfrom() failed");
return NULL;
}
netty_unix_errors_throwIOExceptionErrorNo(env, "recvfrom() failed: ", err);
return NULL;
}
return createDatagramSocketAddress(env, &addr, res, NULL);
}
static jobject _recvFromDomainSocket(JNIEnv* env, jint fd, void* buffer, jint pos, jint limit) {
struct sockaddr_storage addr;
socklen_t addrlen = sizeof(addr);
ssize_t res;
int err;
do {
bzero(&addr, sizeof(addr)); // Zap addr so we can strlen(addr.sun_path) later. See unix(4).
res = recvfrom(fd, buffer + pos, (size_t) (limit - pos), 0, (struct sockaddr*) &addr, &addrlen);
// Keep on reading if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
if (err == EAGAIN || err == EWOULDBLOCK) {
// Nothing left to read
return NULL;
}
if (err == EBADF) {
netty_unix_errors_throwClosedChannelException(env);
return NULL;
}
netty_unix_errors_throwIOExceptionErrorNo(env, "_recvFromDomainSocket() failed: ", err);
return NULL;
}
return createDomainDatagramSocketAddress(env, &addr, res, NULL);
}
static jint _send(JNIEnv* env, jclass clazz, jint fd, void* buffer, jint pos, jint limit) {
ssize_t res;
int err;
do {
res = send(fd, buffer + pos, (size_t) (limit - pos), 0);
// keep on writing if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return (jint) res;
}
static jint netty_unix_socket_send(JNIEnv* env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
// We check that GetDirectBufferAddress will not return NULL in OnLoad
return _send(env, clazz, fd, (*env)->GetDirectBufferAddress(env, jbuffer), pos, limit);
}
static jint netty_unix_socket_sendAddress(JNIEnv* env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
return _send(env, clazz, fd, (void*) (intptr_t) address, pos, limit);
}
static jint _recv(JNIEnv* env, jclass clazz, jint fd, void* buffer, jint pos, jint limit) {
ssize_t res;
int err;
do {
res = recv(fd, buffer + pos, (size_t) (limit - pos), 0);
// Keep on reading if we was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return (jint) res;
}
static jint netty_unix_socket_recv(JNIEnv* env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
// We check that GetDirectBufferAddress will not return NULL in OnLoad
return _recv(env, clazz, fd, (*env)->GetDirectBufferAddress(env, jbuffer), pos, limit);
}
static jint netty_unix_socket_recvAddress(JNIEnv* env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
return _recv(env, clazz, fd, (void*) (intptr_t) address, pos, limit);
}
void netty_unix_socket_getOptionHandleError(JNIEnv* env, int err) {
netty_unix_socket_optionHandleError(env, err, "getsockopt() failed: ");
}
int netty_unix_socket_getOption0(jint fd, int level, int optname, void* optval, socklen_t optlen) {
return getsockopt(fd, level, optname, optval, &optlen);
}
int netty_unix_socket_getOption(JNIEnv* env, jint fd, int level, int optname, void* optval, socklen_t optlen) {
int rc = netty_unix_socket_getOption0(fd, level, optname, optval, optlen);
if (rc < 0) {
netty_unix_socket_getOptionHandleError(env, errno);
}
return rc;
}
int netty_unix_socket_setOption(JNIEnv* env, jint fd, int level, int optname, const void* optval, socklen_t len) {
int rc = netty_unix_socket_setOption0(fd, level, optname, optval, len);
if (rc < 0) {
netty_unix_socket_setOptionHandleError(env, errno);
}
return rc;
}
// JNI Registered Methods Begin
static jint netty_unix_socket_shutdown(JNIEnv* env, jclass clazz, jint fd, jboolean read, jboolean write) {
int mode;
if (read && write) {
mode = SHUT_RDWR;
} else if (read) {
mode = SHUT_RD;
} else if (write) {
mode = SHUT_WR;
} else {
return -EINVAL;
}
if (shutdown(fd, mode) < 0) {
return -errno;
}
return 0;
}
static jint netty_unix_socket_bind(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray address, jint scopeId, jint port) {
struct sockaddr_storage addr;
socklen_t addrSize;
if (netty_unix_socket_initSockaddr(env, ipv6, address, scopeId, port, &addr, &addrSize) == -1) {
return -1;
}
if (bind(fd, (struct sockaddr*) &addr, addrSize) == -1) {
return -errno;
}
return 0;
}
static jint netty_unix_socket_listen(JNIEnv* env, jclass clazz, jint fd, jint backlog) {
if (listen(fd, backlog) == -1) {
return -errno;
}
return 0;
}
static jint netty_unix_socket_connect(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray address, jint scopeId, jint port) {
struct sockaddr_storage addr;
socklen_t addrSize;
if (netty_unix_socket_initSockaddr(env, ipv6, address, scopeId, port, &addr, &addrSize) == -1) {
// A runtime exception was thrown
return -1;
}
int res;
int err;
do {
res = connect(fd, (struct sockaddr*) &addr, addrSize);
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return 0;
}
static jint netty_unix_socket_finishConnect(JNIEnv* env, jclass clazz, jint fd) {
// connect may be done
// return true if connection finished successfully
// return false if connection is still in progress
// throw exception if connection failed
int optval;
int res = netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_ERROR, &optval, sizeof(optval));
if (res != 0) {
// getOption failed
return -1;
}
if (optval == 0) {
// connect succeeded
return 0;
}
return -optval;
}
static jint netty_unix_socket_disconnect(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6) {
#ifndef __APPLE__
struct sockaddr_storage addr;
int len;
memset(&addr, 0, sizeof(addr));
// You can disconnect connection-less sockets by using AF_UNSPEC.
// See man 2 connect.
if (ipv6 == JNI_TRUE) {
struct sockaddr_in6* ip6addr = (struct sockaddr_in6*) &addr;
ip6addr->sin6_family = AF_UNSPEC;
len = sizeof(struct sockaddr_in6);
} else {
struct sockaddr_in* ipaddr = (struct sockaddr_in*) &addr;
ipaddr->sin_family = AF_UNSPEC;
len = sizeof(struct sockaddr_in);
}
#endif // __APPLE__
int res;
int err;
do {
#ifdef __APPLE__
res = disconnectx(fd, SAE_ASSOCID_ANY, SAE_CONNID_ANY);
#else
res = connect(fd, (struct sockaddr*) &addr, len);
#endif // __APPLE__
} while (res == -1 && ((err = errno) == EINTR));
// EAFNOSUPPORT is harmless in this case.
// See https://www.unix.com/man-page/osx/2/connect/
if (res < 0 && err != EAFNOSUPPORT) {
return -err;
}
return 0;
}
static jint netty_unix_socket_accept(JNIEnv* env, jclass clazz, jint fd, jbyteArray acceptedAddress) {
jint socketFd;
jsize len;
jbyte len_b;
int err;
struct sockaddr_storage addr;
socklen_t address_len = sizeof(addr);
for (;;) {
#ifdef SOCK_NONBLOCK
if (accept4) {
socketFd = accept4(fd, (struct sockaddr*) &addr, &address_len, SOCK_NONBLOCK | SOCK_CLOEXEC);
} else {
#endif
socketFd = accept(fd, (struct sockaddr*) &addr, &address_len);
#ifdef SOCK_NONBLOCK
}
#endif
if (socketFd != -1) {
break;
}
if ((err = errno) != EINTR) {
return -err;
}
}
len = addressLength(&addr);
len_b = (jbyte) len;
// Fill in remote address details
(*env)->SetByteArrayRegion(env, acceptedAddress, 0, 1, (jbyte*) &len_b);
initInetSocketAddressArray(env, &addr, acceptedAddress, 1, len);
if (accept4) {
return socketFd;
}
if (fcntl(socketFd, F_SETFD, FD_CLOEXEC) == -1 || fcntl(socketFd, F_SETFL, O_NONBLOCK) == -1) {
// accept4 was not present so need two more sys-calls ...
return -errno;
}
return socketFd;
}
static jbyteArray netty_unix_socket_remoteAddress(JNIEnv* env, jclass clazz, jint fd) {
struct sockaddr_storage addr = { 0 };
socklen_t len = sizeof(addr);
if (getpeername(fd, (struct sockaddr*) &addr, &len) == -1) {
return NULL;
}
return netty_unix_socket_createInetSocketAddressArray(env, &addr);
}
static jbyteArray netty_unix_socket_remoteDomainSocketAddress(JNIEnv* env, jclass clazz, jint fd) {
struct sockaddr_storage addr = { 0 };
socklen_t len = sizeof(addr);
if (getpeername(fd, (struct sockaddr*) &addr, &len) == -1) {
return NULL;
}
return netty_unix_socket_createDomainSocketAddressArray(env, &addr);
}
static jbyteArray netty_unix_socket_localAddress(JNIEnv* env, jclass clazz, jint fd) {
struct sockaddr_storage addr = { 0 };
socklen_t len = sizeof(addr);
if (getsockname(fd, (struct sockaddr*) &addr, &len) == -1) {
return NULL;
}
return netty_unix_socket_createInetSocketAddressArray(env, &addr);
}
static jbyteArray netty_unix_socket_localDomainSocketAddress(JNIEnv* env, jclass clazz, jint fd) {
struct sockaddr_storage addr = { 0 };
socklen_t len = sizeof(addr);
if (getsockname(fd, (struct sockaddr*) &addr, &len) == -1) {
return NULL;
}
return netty_unix_socket_createDomainSocketAddressArray(env, &addr);
}
static jint netty_unix_socket_newSocketDgramFd(JNIEnv* env, jclass clazz, jboolean ipv6) {
int domain = ipv6 == JNI_TRUE ? AF_INET6 : AF_INET;
return _socket(env, clazz, domain, SOCK_DGRAM);
}
static jint netty_unix_socket_newSocketStreamFd(JNIEnv* env, jclass clazz, jboolean ipv6) {
int domain = ipv6 == JNI_TRUE ? AF_INET6 : AF_INET;
return _socket(env, clazz, domain, SOCK_STREAM);
}
static jint netty_unix_socket_newSocketDomainFd(JNIEnv* env, jclass clazz) {
int fd = netty_unix_socket_nonBlockingSocket(PF_UNIX, SOCK_STREAM, 0);
if (fd == -1) {
return -errno;
}
return fd;
}
static jint netty_unix_socket_newSocketDomainDgramFd(JNIEnv* env, jclass clazz) {
int fd = netty_unix_socket_nonBlockingSocket(PF_UNIX, SOCK_DGRAM, 0);
if (fd == -1) {
return -errno;
}
return fd;
}
static jint netty_unix_socket_sendTo(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jobject jbuffer, jint pos, jint limit, jbyteArray address, jint scopeId, jint port, jint flags) {
// We check that GetDirectBufferAddress will not return NULL in OnLoad
return _sendTo(env, fd, ipv6, (*env)->GetDirectBufferAddress(env, jbuffer), pos, limit, address, scopeId, port, flags);
}
static jint netty_unix_socket_sendToAddress(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jlong memoryAddress, jint pos, jint limit, jbyteArray address, jint scopeId, jint port, jint flags) {
return _sendTo(env, fd, ipv6, (void *) (intptr_t) memoryAddress, pos, limit, address, scopeId, port, flags);
}
static jint netty_unix_socket_sendToAddresses(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jlong memoryAddress, jint length, jbyteArray address, jint scopeId, jint port, jint flags) {
struct sockaddr_storage addr;
socklen_t addrSize;
if (netty_unix_socket_initSockaddr(env, ipv6, address, scopeId, port, &addr, &addrSize) == -1) {
return -1;
}
struct msghdr m = { 0 };
m.msg_name = (void*) &addr;
m.msg_namelen = addrSize;
m.msg_iov = (struct iovec*) (intptr_t) memoryAddress;
m.msg_iovlen = length;
ssize_t res;
int err;
do {
res = sendmsg(fd, &m, flags);
// keep on writing if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return (jint) res;
}
static jint netty_unix_socket_sendToDomainSocket(JNIEnv* env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit, jbyteArray socketPath) {
// We check that GetDirectBufferAddress will not return NULL in OnLoad
return _sendToDomainSocket(env, fd, (*env)->GetDirectBufferAddress(env, jbuffer), pos, limit, socketPath);
}
static jint netty_unix_socket_sendToAddressDomainSocket(JNIEnv* env, jclass clazz, jint fd, jlong memoryAddress, jint pos, jint limit, jbyteArray socketPath) {
return _sendToDomainSocket(env, fd, (void *) (intptr_t) memoryAddress, pos, limit, socketPath);
}
static jint netty_unix_socket_sendToAddressesDomainSocket(JNIEnv* env, jclass clazz, jint fd, jlong memoryAddress, jint length, jbyteArray socketPath) {
struct sockaddr_un addr;
jint socket_path_len;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
jbyte* socket_path = (*env)->GetByteArrayElements(env, socketPath, 0);
if (socket_path == NULL) {
return -1;
}
socket_path_len = (*env)->GetArrayLength(env, socketPath);
if (socket_path_len > sizeof(addr.sun_path)) {
socket_path_len = sizeof(addr.sun_path);
}
memcpy(addr.sun_path, socket_path, socket_path_len);
struct msghdr m = { 0 };
m.msg_name = (void*) &addr;
m.msg_namelen = sizeof(struct sockaddr_un);
m.msg_iov = (struct iovec*) (intptr_t) memoryAddress;
m.msg_iovlen = length;
ssize_t res;
int err;
do {
res = sendmsg(fd, &m, 0);
// keep on writing if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
(*env)->ReleaseByteArrayElements(env, socketPath, socket_path, 0);
if (res < 0) {
return -err;
}
return (jint) res;
}
static jobject netty_unix_socket_recvFrom(JNIEnv* env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
// We check that GetDirectBufferAddress will not return NULL in OnLoad
return _recvFrom(env, fd, (*env)->GetDirectBufferAddress(env, jbuffer), pos, limit);
}
static jobject netty_unix_socket_recvFromAddress(JNIEnv* env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
return _recvFrom(env, fd, (void *) (intptr_t) address, pos, limit);
}
static jobject netty_unix_socket_recvFromDomainSocket(JNIEnv* env, jclass clazz, jint fd, jobject jbuffer, jint pos, jint limit) {
// We check that GetDirectBufferAddress will not return NULL in OnLoad
return _recvFromDomainSocket(env, fd, (*env)->GetDirectBufferAddress(env, jbuffer), pos, limit);
}
static jobject netty_unix_socket_recvFromAddressDomainSocket(JNIEnv* env, jclass clazz, jint fd, jlong address, jint pos, jint limit) {
return _recvFromDomainSocket(env, fd, (void *) (intptr_t) address, pos, limit);
}
static jint netty_unix_socket_bindDomainSocket(JNIEnv* env, jclass clazz, jint fd, jbyteArray socketPath) {
struct sockaddr_un addr;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
jbyte* socket_path = (*env)->GetByteArrayElements(env, socketPath, 0);
if (socket_path == NULL) {
return -1;
}
jint socket_path_len = (*env)->GetArrayLength(env, socketPath);
if (socket_path_len > sizeof(addr.sun_path) || (socket_path_len == sizeof(addr.sun_path) && socket_path[socket_path_len] != '\0')) {
(*env)->ReleaseByteArrayElements(env, socketPath, socket_path, 0);
return -ENAMETOOLONG;
}
memcpy(addr.sun_path, socket_path, socket_path_len);
(*env)->ReleaseByteArrayElements(env, socketPath, socket_path, 0);
if (unlink((const char*) addr.sun_path) == -1 && errno != ENOENT) {
return -errno;
}
int res = bind(fd, (struct sockaddr*) &addr, _UNIX_ADDR_LENGTH(socket_path_len));
if (res == -1) {
return -errno;
}
return res;
}
static jint netty_unix_socket_connectDomainSocket(JNIEnv* env, jclass clazz, jint fd, jbyteArray socketPath) {
struct sockaddr_un addr;
jint socket_path_len;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
jbyte* socket_path = (*env)->GetByteArrayElements(env, socketPath, 0);
if (socket_path == NULL) {
return -1;
}
socket_path_len = (*env)->GetArrayLength(env, socketPath);
if (socket_path_len > sizeof(addr.sun_path) || (socket_path_len == sizeof(addr.sun_path) && socket_path[socket_path_len] != '\0')) {
(*env)->ReleaseByteArrayElements(env, socketPath, socket_path, 0);
return -ENAMETOOLONG;
}
memcpy(addr.sun_path, socket_path, socket_path_len);
(*env)->ReleaseByteArrayElements(env, socketPath, socket_path, 0);
int res;
int err;
do {
res = connect(fd, (struct sockaddr*) &addr, _UNIX_ADDR_LENGTH(socket_path_len));
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return 0;
}
static jint netty_unix_socket_recvFd(JNIEnv* env, jclass clazz, jint fd) {
int socketFd;
struct msghdr descriptorMessage = { 0 };
struct iovec iov[1] = { { 0 } };
char control[CMSG_SPACE(sizeof(int))] = { 0 };
char iovecData[1];
descriptorMessage.msg_control = control;
descriptorMessage.msg_controllen = sizeof(control);
descriptorMessage.msg_iov = iov;
descriptorMessage.msg_iovlen = 1;
iov[0].iov_base = iovecData;
iov[0].iov_len = sizeof(iovecData);
ssize_t res;
int err;
for (;;) {
do {
res = recvmsg(fd, &descriptorMessage, 0);
// Keep on reading if we was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res == 0) {
return 0;
}
if (res < 0) {
return -err;
}
struct cmsghdr* cmsg = CMSG_FIRSTHDR(&descriptorMessage);
if (!cmsg) {
return -errno;
}
if ((cmsg->cmsg_len == CMSG_LEN(sizeof(int))) && (cmsg->cmsg_level == SOL_SOCKET) && (cmsg->cmsg_type == SCM_RIGHTS)) {
socketFd = *((int *) CMSG_DATA(cmsg));
// set as non blocking as we want to use it with kqueue/epoll
if (fcntl(socketFd, F_SETFL, O_NONBLOCK) == -1) {
err = errno;
close(socketFd);
return -err;
}
return socketFd;
}
}
}
static jint netty_unix_socket_sendFd(JNIEnv* env, jclass clazz, jint socketFd, jint fd) {
struct msghdr descriptorMessage = { 0 };
struct iovec iov[1] = { { 0 } };
char control[CMSG_SPACE(sizeof(int))] = { 0 };
char iovecData[1];
descriptorMessage.msg_control = control;
descriptorMessage.msg_controllen = sizeof(control);
struct cmsghdr* cmsg = CMSG_FIRSTHDR(&descriptorMessage);
if (cmsg) {
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
*((int *)CMSG_DATA(cmsg)) = fd;
descriptorMessage.msg_iov = iov;
descriptorMessage.msg_iovlen = 1;
iov[0].iov_base = iovecData;
iov[0].iov_len = sizeof(iovecData);
ssize_t res;
int err;
do {
res = sendmsg(socketFd, &descriptorMessage, 0);
// keep on writing if it was interrupted
} while (res == -1 && ((err = errno) == EINTR));
if (res < 0) {
return -err;
}
return (jint) res;
}
return -1;
}
static void netty_unix_socket_setReuseAddress(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
}
static void netty_unix_socket_setReusePort(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval));
}
static void netty_unix_socket_setTcpNoDelay(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_NODELAY, &optval, sizeof(optval));
}
static void netty_unix_socket_setReceiveBufferSize(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_RCVBUF, &optval, sizeof(optval));
}
static void netty_unix_socket_setSendBufferSize(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_SNDBUF, &optval, sizeof(optval));
}
static void netty_unix_socket_setKeepAlive(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval));
}
static void netty_unix_socket_setBroadcast(JNIEnv* env, jclass clazz, jint fd, jint optval) {
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_BROADCAST, &optval, sizeof(optval));
}
static void netty_unix_socket_setSoLinger(JNIEnv* env, jclass clazz, jint fd, jint optval) {
struct linger solinger;
if (optval < 0) {
solinger.l_onoff = 0;
solinger.l_linger = 0;
} else {
solinger.l_onoff = 1;
solinger.l_linger = optval;
}
netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_LINGER, &solinger, sizeof(solinger));
}
static void netty_unix_socket_setTrafficClass(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jint optval) {
if (ipv6 == JNI_TRUE) {
// This call will put an exception on the stack to be processed once the JNI calls completes if
// setsockopt failed and return a negative value.
int rc = netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, IPV6_TCLASS, &optval, sizeof(optval));
if (rc >= 0) {
/* Linux allows both ipv4 and ipv6 families to be set */
#ifdef __linux__
// Previous call successful now try to set also for ipv4
if (netty_unix_socket_setOption0(fd, IPPROTO_IP, IP_TOS, &optval, sizeof(optval)) == -1) {
if (errno != ENOPROTOOPT) {
// throw exception
netty_unix_socket_setOptionHandleError(env, errno);
}
}
#endif
}
} else {
netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_TOS, &optval, sizeof(optval));
}
}
static jint netty_unix_socket_isKeepAlive(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_isTcpNoDelay(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_NODELAY, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_getReceiveBufferSize(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_RCVBUF, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_getSendBufferSize(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_SNDBUF, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_getSoLinger(JNIEnv* env, jclass clazz, jint fd) {
struct linger optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_LINGER, &optval, sizeof(optval)) == -1) {
return -1;
}
if (optval.l_onoff == 0) {
return -1;
} else {
return optval.l_linger;
}
}
static jint netty_unix_socket_getTrafficClass(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6) {
int optval;
if (ipv6 == JNI_TRUE) {
if (netty_unix_socket_getOption0(fd, IPPROTO_IPV6, IPV6_TCLASS, &optval, sizeof(optval)) == -1) {
if (errno == ENOPROTOOPT) {
if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_TOS, &optval, sizeof(optval)) == -1) {
return -1;
}
} else {
netty_unix_socket_getOptionHandleError(env, errno);
return -1;
}
}
} else {
if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_TOS, &optval, sizeof(optval)) == -1) {
return -1;
}
}
return optval;
}
static jint netty_unix_socket_getSoError(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_ERROR, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_isReuseAddress(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_isReusePort(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static jint netty_unix_socket_isBroadcast(JNIEnv* env, jclass clazz, jint fd) {
int optval;
if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_BROADCAST, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static void netty_unix_socket_setIntOpt(JNIEnv* env, jclass clazz, jint fd, jint level, jint optname, jint optval) {
netty_unix_socket_setOption(env, fd, level, optname, &optval, sizeof(optval));
}
static void netty_unix_socket_setRawOptArray(JNIEnv* env, jclass clazz, jint fd, jint level, jint optname, jbyteArray inArray, jint offset, jint len) {
jbyte* optval = (*env)->GetByteArrayElements(env, inArray, 0);
if (optval == NULL) {
return;
}
netty_unix_socket_setOption(env, fd, level, optname, optval + offset, len);
(*env)->ReleaseByteArrayElements(env, inArray, optval, 0);
}
static void netty_unix_socket_setRawOptAddress(JNIEnv* env, jclass clazz, jint fd, jint level, jint optname, jlong inAddress, jint len) {
netty_unix_socket_setOption(env, fd, level, optname, (void *) inAddress, len);
}
static jint netty_unix_socket_getIntOpt(JNIEnv* env, jclass clazz, jint fd, jint level, jint optname) {
jint optval;
if (netty_unix_socket_getOption(env, fd, level, optname, &optval, sizeof(optval)) == -1) {
return -1;
}
return optval;
}
static void netty_unix_socket_getRawOptArray(JNIEnv* env, jclass clazz, jint fd, jint level, jint optname, jbyteArray outArray, jint offset, jint len) {
jbyte* optval = (*env)->GetByteArrayElements(env, outArray, 0);
if (optval == NULL) {
return;
}
netty_unix_socket_getOption(env, fd, level, optname, optval + offset, len);
(*env)->ReleaseByteArrayElements(env, outArray, optval, 0);
}
static void netty_unix_socket_getRawOptAddress(JNIEnv* env, jclass clazz, jint fd, jint level, jint optname, jlong outAddress, jint len) {
netty_unix_socket_getOption(env, fd, level, optname, (void *) outAddress, len);
}
static jint netty_unix_socket_msgFastopen(JNIEnv* env, jclass clazz) {
return MSG_FASTOPEN;
}
// JNI Registered Methods End
// JNI Method Registration Table Begin
static const JNINativeMethod fixed_method_table[] = {
{ "shutdown", "(IZZ)I", (void *) netty_unix_socket_shutdown },
{ "bind", "(IZ[BII)I", (void *) netty_unix_socket_bind },
{ "listen", "(II)I", (void *) netty_unix_socket_listen },
{ "connect", "(IZ[BII)I", (void *) netty_unix_socket_connect },
{ "finishConnect", "(I)I", (void *) netty_unix_socket_finishConnect },
{ "disconnect", "(IZ)I", (void *) netty_unix_socket_disconnect},
{ "accept", "(I[B)I", (void *) netty_unix_socket_accept },
{ "remoteAddress", "(I)[B", (void *) netty_unix_socket_remoteAddress },
{ "localAddress", "(I)[B", (void *) netty_unix_socket_localAddress },
{ "remoteDomainSocketAddress", "(I)[B", (void *) netty_unix_socket_remoteDomainSocketAddress },
{ "localDomainSocketAddress", "(I)[B", (void *) netty_unix_socket_localDomainSocketAddress },
{ "newSocketDgramFd", "(Z)I", (void *) netty_unix_socket_newSocketDgramFd },
{ "newSocketStreamFd", "(Z)I", (void *) netty_unix_socket_newSocketStreamFd },
{ "newSocketDomainFd", "()I", (void *) netty_unix_socket_newSocketDomainFd },
{ "newSocketDomainDgramFd", "()I", (void *) netty_unix_socket_newSocketDomainDgramFd },
{ "sendTo", "(IZLjava/nio/ByteBuffer;II[BIII)I", (void *) netty_unix_socket_sendTo },
{ "sendToAddress", "(IZJII[BIII)I", (void *) netty_unix_socket_sendToAddress },
{ "sendToAddresses", "(IZJI[BIII)I", (void *) netty_unix_socket_sendToAddresses },
{ "sendToDomainSocket", "(ILjava/nio/ByteBuffer;II[B)I", (void *) netty_unix_socket_sendToDomainSocket },
{ "sendToAddressDomainSocket", "(IJII[B)I", (void *) netty_unix_socket_sendToAddressDomainSocket },
{ "sendToAddressesDomainSocket", "(IJI[B)I", (void *) netty_unix_socket_sendToAddressesDomainSocket },
// "recvFrom" has a dynamic signature
// "recvFromAddress" has a dynamic signature
// "recvFromDomainSocket" has a dynamic signature
// "recvFromAddressDomainSocket" has a dynamic signature
{ "send", "(ILjava/nio/ByteBuffer;II)I", (void *) netty_unix_socket_send },
{ "sendAddress", "(IJII)I", (void *) netty_unix_socket_sendAddress },
{ "recv", "(ILjava/nio/ByteBuffer;II)I", (void *) netty_unix_socket_recv },
{ "recvAddress", "(IJII)I", (void *) netty_unix_socket_recvAddress },
{ "recvFd", "(I)I", (void *) netty_unix_socket_recvFd },
{ "sendFd", "(II)I", (void *) netty_unix_socket_sendFd },
{ "bindDomainSocket", "(I[B)I", (void *) netty_unix_socket_bindDomainSocket },
{ "connectDomainSocket", "(I[B)I", (void *) netty_unix_socket_connectDomainSocket },
{ "setTcpNoDelay", "(II)V", (void *) netty_unix_socket_setTcpNoDelay },
{ "setReusePort", "(II)V", (void *) netty_unix_socket_setReusePort },
{ "setBroadcast", "(II)V", (void *) netty_unix_socket_setBroadcast },
{ "setReuseAddress", "(II)V", (void *) netty_unix_socket_setReuseAddress },
{ "setReceiveBufferSize", "(II)V", (void *) netty_unix_socket_setReceiveBufferSize },
{ "setSendBufferSize", "(II)V", (void *) netty_unix_socket_setSendBufferSize },
{ "setKeepAlive", "(II)V", (void *) netty_unix_socket_setKeepAlive },
{ "setSoLinger", "(II)V", (void *) netty_unix_socket_setSoLinger },
{ "setTrafficClass", "(IZI)V", (void *) netty_unix_socket_setTrafficClass },
{ "isKeepAlive", "(I)I", (void *) netty_unix_socket_isKeepAlive },
{ "isTcpNoDelay", "(I)I", (void *) netty_unix_socket_isTcpNoDelay },
{ "isBroadcast", "(I)I", (void *) netty_unix_socket_isBroadcast },
{ "isReuseAddress", "(I)I", (void *) netty_unix_socket_isReuseAddress },
{ "isReusePort", "(I)I", (void *) netty_unix_socket_isReusePort },
{ "getReceiveBufferSize", "(I)I", (void *) netty_unix_socket_getReceiveBufferSize },
{ "getSendBufferSize", "(I)I", (void *) netty_unix_socket_getSendBufferSize },
{ "getSoLinger", "(I)I", (void *) netty_unix_socket_getSoLinger },
{ "getTrafficClass", "(IZ)I", (void *) netty_unix_socket_getTrafficClass },
{ "getSoError", "(I)I", (void *) netty_unix_socket_getSoError },
{ "isIPv6Preferred0", "(Z)Z", (void *) netty_unix_socket_isIPv6Preferred0 },
{ "isIPv6", "(I)Z", (void *) netty_unix_socket_isIPv6 },
{ "msgFastopen", "()I", (void *) netty_unix_socket_msgFastopen },
{ "setIntOpt", "(IIII)V", (void *) netty_unix_socket_setIntOpt },
{ "setRawOptArray", "(III[BII)V", (void *) netty_unix_socket_setRawOptArray },
{ "setRawOptAddress", "(IIIJI)V", (void *) netty_unix_socket_setRawOptAddress },
{ "getIntOpt", "(III)I", (void *) netty_unix_socket_getIntOpt },
{ "getRawOptArray", "(III[BII)V", (void *) netty_unix_socket_getRawOptArray },
{ "getRawOptAddress", "(IIIJI)V", (void *) netty_unix_socket_getRawOptAddress }
};
static const jint fixed_method_table_size = sizeof(fixed_method_table) / sizeof(fixed_method_table[0]);
static jint dynamicMethodsTableSize() {
// 4 is for the dynamic method signatures.
return fixed_method_table_size + 4;
}
static JNINativeMethod* createDynamicMethodsTable(const char* packagePrefix) {
char* dynamicTypeName = NULL;
size_t size = sizeof(JNINativeMethod) * dynamicMethodsTableSize();
JNINativeMethod* dynamicMethods = malloc(size);
if (dynamicMethods == NULL) {
return NULL;
}
memset(dynamicMethods, 0, size);
memcpy(dynamicMethods, fixed_method_table, sizeof(fixed_method_table));
JNINativeMethod* dynamicMethod = &dynamicMethods[fixed_method_table_size];
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/DatagramSocketAddress;", dynamicTypeName, error);
NETTY_JNI_UTIL_PREPEND("(ILjava/nio/ByteBuffer;II)L", dynamicTypeName, dynamicMethod->signature, error);
dynamicMethod->name = "recvFrom";
dynamicMethod->fnPtr = (void *) netty_unix_socket_recvFrom;
netty_jni_util_free_dynamic_name(&dynamicTypeName);
++dynamicMethod;
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/DatagramSocketAddress;", dynamicTypeName, error);
NETTY_JNI_UTIL_PREPEND("(IJII)L", dynamicTypeName, dynamicMethod->signature, error);
dynamicMethod->name = "recvFromAddress";
dynamicMethod->fnPtr = (void *) netty_unix_socket_recvFromAddress;
netty_jni_util_free_dynamic_name(&dynamicTypeName);
++dynamicMethod;
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/DomainDatagramSocketAddress;", dynamicTypeName, error);
NETTY_JNI_UTIL_PREPEND("(ILjava/nio/ByteBuffer;II)L", dynamicTypeName, dynamicMethod->signature, error);
dynamicMethod->name = "recvFromDomainSocket";
dynamicMethod->fnPtr = (void *) netty_unix_socket_recvFromDomainSocket;
netty_jni_util_free_dynamic_name(&dynamicTypeName);
++dynamicMethod;
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/DomainDatagramSocketAddress;", dynamicTypeName, error);
NETTY_JNI_UTIL_PREPEND("(IJII)L", dynamicTypeName, dynamicMethod->signature, error);
dynamicMethod->name = "recvFromAddressDomainSocket";
dynamicMethod->fnPtr = (void *) netty_unix_socket_recvFromAddressDomainSocket;
netty_jni_util_free_dynamic_name(&dynamicTypeName);
return dynamicMethods;
error:
free(dynamicTypeName);
netty_jni_util_free_dynamic_methods_table(dynamicMethods, fixed_method_table_size, dynamicMethodsTableSize());
return NULL;
}
// JNI Method Registration Table End
// IMPORTANT: If you add any NETTY_JNI_UTIL_LOAD_CLASS or NETTY_JNI_UTIL_FIND_CLASS calls you also need to update
// Unix to reflect that.
jint netty_unix_socket_JNI_OnLoad(JNIEnv* env, const char* packagePrefix) {
int ret = JNI_ERR;
char* nettyClassName = NULL;
void* mem = NULL;
jclass datagramSocketAddressClass = NULL;
jclass domainDatagramSocketAddressClass = NULL;
JNINativeMethod* dynamicMethods = createDynamicMethodsTable(packagePrefix);
if (dynamicMethods == NULL) {
goto done;
}
if (netty_jni_util_register_natives(env,
packagePrefix,
SOCKET_CLASSNAME,
dynamicMethods,
dynamicMethodsTableSize()) != 0) {
goto done;
}
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/DatagramSocketAddress", nettyClassName, done);
NETTY_JNI_UTIL_LOAD_CLASS_WEAK(env, datagramSocketAddressClassWeak, nettyClassName, done);
NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, datagramSocketAddressClass, datagramSocketAddressClassWeak, done);
// Respect shading...
char parameters[1024] = {0};
snprintf(parameters, sizeof(parameters), "([BIIIL%s;)V", nettyClassName);
netty_jni_util_free_dynamic_name(&nettyClassName);
NETTY_JNI_UTIL_GET_METHOD(env, datagramSocketAddressClass, datagramSocketAddrMethodId, "", parameters, done);
NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/DomainDatagramSocketAddress", nettyClassName, done);
NETTY_JNI_UTIL_LOAD_CLASS_WEAK(env, domainDatagramSocketAddressClassWeak, nettyClassName, done);
NETTY_JNI_UTIL_NEW_LOCAL_FROM_WEAK(env, domainDatagramSocketAddressClass, domainDatagramSocketAddressClassWeak, done);
char parameters1[1024] = {0};
snprintf(parameters1, sizeof(parameters1), "([BIL%s;)V", nettyClassName);
netty_jni_util_free_dynamic_name(&nettyClassName);
NETTY_JNI_UTIL_GET_METHOD(env, domainDatagramSocketAddressClass, domainDatagramSocketAddrMethodId, "", parameters1, done);
NETTY_JNI_UTIL_LOAD_CLASS(env, inetSocketAddressClass, "java/net/InetSocketAddress", done);
NETTY_JNI_UTIL_GET_METHOD(env, inetSocketAddressClass, inetSocketAddrMethodId, "", "(Ljava/lang/String;I)V", done);
if ((mem = malloc(1)) == NULL) {
goto done;
}
jobject directBuffer = (*env)->NewDirectByteBuffer(env, mem, 1);
if (directBuffer == NULL) {
goto done;
}
if ((*env)->GetDirectBufferAddress(env, directBuffer) == NULL) {
goto done;
}
ret = NETTY_JNI_UTIL_JNI_VERSION;
done:
netty_jni_util_free_dynamic_methods_table(dynamicMethods, fixed_method_table_size, dynamicMethodsTableSize());
free(nettyClassName);
free(mem);
NETTY_JNI_UTIL_DELETE_LOCAL(env, datagramSocketAddressClass);
NETTY_JNI_UTIL_DELETE_LOCAL(env, domainDatagramSocketAddressClass);
return ret;
}
void netty_unix_socket_JNI_OnUnLoad(JNIEnv* env, const char* packagePrefix) {
NETTY_JNI_UTIL_UNLOAD_CLASS_WEAK(env, datagramSocketAddressClassWeak);
NETTY_JNI_UTIL_UNLOAD_CLASS_WEAK(env, domainDatagramSocketAddressClassWeak);
NETTY_JNI_UTIL_UNLOAD_CLASS(env, inetSocketAddressClass);
netty_jni_util_unregister_natives(env, packagePrefix, SOCKET_CLASSNAME);
}