static jobject makeInterfaceAddress(JNIEnv* env, jint interfaceIndex, ifaddrs* ifa) {
jmethodID constructor = env->GetMethodID(JniConstants::interfaceAddressClass, "<init>",
"(ILjava/lang/String;Ljava/net/InetAddress;Ljava/net/InetAddress;)V");
if (constructor == NULL) {
return NULL;
}
jobject javaName = env->NewStringUTF(ifa->ifa_name);
if (javaName == NULL) {
return NULL;
}
sockaddr_storage* addr = reinterpret_cast<sockaddr_storage*>(ifa->ifa_addr);
jobject javaAddress = socketAddressToInetAddress(env, addr);
if (javaAddress == NULL) {
return NULL;
}
sockaddr_storage* mask = reinterpret_cast<sockaddr_storage*>(ifa->ifa_netmask);
jobject javaMask = socketAddressToInetAddress(env, mask);
if (javaMask == NULL) {
return NULL;
}
return env->NewObject(JniConstants::interfaceAddressClass, constructor,
interfaceIndex, javaName, javaAddress, javaMask);
}
static jobject OSNetworkSystem_getSocketLocalAddress(JNIEnv* env,
jobject, jobject fileDescriptor) {
NetFd fd(env, fileDescriptor);
if (fd.isClosed()) {
return NULL;
}
sockaddr_storage ss;
socklen_t ssLen = sizeof(ss);
memset(&ss, 0, ssLen);
int rc = getsockname(fd.get(), reinterpret_cast<sockaddr*>(&ss), &ssLen);
if (rc == -1) {
// TODO: the public API doesn't allow failure, so this whole method
// represents a broken design. In practice, though, getsockname can't
// fail unless we give it invalid arguments.
LOGE("getsockname failed: %s (errno=%i)", strerror(errno), errno);
return NULL;
}
return socketAddressToInetAddress(env, &ss);
}
static void OSNetworkSystem_accept(JNIEnv* env, jobject, jobject serverFileDescriptor,
jobject newSocket, jobject clientFileDescriptor) {
if (newSocket == NULL) {
jniThrowNullPointerException(env, NULL);
return;
}
NetFd serverFd(env, serverFileDescriptor);
if (serverFd.isClosed()) {
return;
}
sockaddr_storage ss;
socklen_t addrLen = sizeof(ss);
sockaddr* sa = reinterpret_cast<sockaddr*>(&ss);
int clientFd;
{
int intFd = serverFd.get();
AsynchronousSocketCloseMonitor monitor(intFd);
clientFd = NET_FAILURE_RETRY(serverFd, accept(intFd, sa, &addrLen));
}
if (env->ExceptionOccurred()) {
return;
}
if (clientFd == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
jniThrowSocketTimeoutException(env, errno);
} else {
jniThrowSocketException(env, errno);
}
return;
}
// Reset the inherited read timeout to the Java-specified default of 0.
timeval timeout(toTimeval(0));
int rc = setsockopt(clientFd, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
if (rc == -1) {
LOGE("couldn't reset SO_RCVTIMEO on accepted socket fd %i: %s", clientFd, strerror(errno));
jniThrowSocketException(env, errno);
}
/*
* For network sockets, put the peer address and port in instance variables.
* We don't bother to do this for UNIX domain sockets, since most peers are
* anonymous anyway.
*/
if (ss.ss_family == AF_INET || ss.ss_family == AF_INET6) {
// Remote address and port.
jobject remoteAddress = socketAddressToInetAddress(env, &ss);
if (remoteAddress == NULL) {
close(clientFd);
return;
}
int remotePort = getSocketAddressPort(&ss);
env->SetObjectField(newSocket, gCachedFields.socketimpl_address, remoteAddress);
env->SetIntField(newSocket, gCachedFields.socketimpl_port, remotePort);
// Local port.
memset(&ss, 0, addrLen);
int rc = getsockname(clientFd, sa, &addrLen);
if (rc == -1) {
close(clientFd);
jniThrowSocketException(env, errno);
return;
}
int localPort = getSocketAddressPort(&ss);
env->SetIntField(newSocket, gCachedFields.socketimpl_localport, localPort);
}
jniSetFileDescriptorOfFD(env, clientFileDescriptor, clientFd);
}
static jobject OSNetworkSystem_getSocketOption(JNIEnv* env, jobject, jobject fileDescriptor, jint option) {
NetFd fd(env, fileDescriptor);
if (fd.isClosed()) {
return NULL;
}
int family = getSocketAddressFamily(fd.get());
if (family != AF_INET && family != AF_INET6) {
jniThrowSocketException(env, EAFNOSUPPORT);
return NULL;
}
switch (option) {
case JAVASOCKOPT_TCP_NODELAY:
return getSocketOption_Boolean(env, fd, IPPROTO_TCP, TCP_NODELAY);
case JAVASOCKOPT_SO_SNDBUF:
return getSocketOption_Integer(env, fd, SOL_SOCKET, SO_SNDBUF);
case JAVASOCKOPT_SO_RCVBUF:
return getSocketOption_Integer(env, fd, SOL_SOCKET, SO_RCVBUF);
case JAVASOCKOPT_SO_BROADCAST:
return getSocketOption_Boolean(env, fd, SOL_SOCKET, SO_BROADCAST);
case JAVASOCKOPT_SO_REUSEADDR:
return getSocketOption_Boolean(env, fd, SOL_SOCKET, SO_REUSEADDR);
case JAVASOCKOPT_SO_KEEPALIVE:
return getSocketOption_Boolean(env, fd, SOL_SOCKET, SO_KEEPALIVE);
case JAVASOCKOPT_SO_OOBINLINE:
return getSocketOption_Boolean(env, fd, SOL_SOCKET, SO_OOBINLINE);
case JAVASOCKOPT_IP_TOS:
if (family == AF_INET) {
return getSocketOption_Integer(env, fd, IPPROTO_IP, IP_TOS);
} else {
return getSocketOption_Integer(env, fd, IPPROTO_IPV6, IPV6_TCLASS);
}
case JAVASOCKOPT_SO_LINGER:
{
linger lingr;
bool ok = getSocketOption(env, fd, SOL_SOCKET, SO_LINGER, &lingr);
if (!ok) {
return NULL; // We already threw.
} else if (!lingr.l_onoff) {
return booleanValueOf(env, false);
} else {
return integerValueOf(env, lingr.l_linger);
}
}
case JAVASOCKOPT_SO_TIMEOUT:
{
timeval timeout;
bool ok = getSocketOption(env, fd, SOL_SOCKET, SO_RCVTIMEO, &timeout);
return ok ? integerValueOf(env, toMs(timeout)) : NULL;
}
#ifdef ENABLE_MULTICAST
case JAVASOCKOPT_IP_MULTICAST_IF:
{
// Although setsockopt(2) can take an ip_mreqn for IP_MULTICAST_IF, getsockopt(2)
// always returns an in_addr.
sockaddr_storage ss;
memset(&ss, 0, sizeof(ss));
ss.ss_family = AF_INET; // This call is IPv4-only.
sockaddr_in* sa = reinterpret_cast<sockaddr_in*>(&ss);
if (!getSocketOption(env, fd, IPPROTO_IP, IP_MULTICAST_IF, &sa->sin_addr)) {
return NULL;
}
return socketAddressToInetAddress(env, &ss);
}
case JAVASOCKOPT_IP_MULTICAST_IF2:
if (family == AF_INET) {
// The caller's asking for an interface index, but that's not how IPv4 works.
// Our Java should never get here, because we'll try IP_MULTICAST_IF first and
// that will satisfy us.
jniThrowSocketException(env, EAFNOSUPPORT);
} else {
return getSocketOption_Integer(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_IF);
}
case JAVASOCKOPT_IP_MULTICAST_LOOP:
if (family == AF_INET) {
// Although IPv6 was cleaned up to use int, IPv4 multicast loopback uses a byte.
u_char loopback;
bool ok = getSocketOption(env, fd, IPPROTO_IP, IP_MULTICAST_LOOP, &loopback);
return ok ? booleanValueOf(env, loopback) : NULL;
} else {
return getSocketOption_Boolean(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP);
}
case JAVASOCKOPT_MULTICAST_TTL:
if (family == AF_INET) {
// Although IPv6 was cleaned up to use int, and IPv4 non-multicast TTL uses int,
// IPv4 multicast TTL uses a byte.
u_char ttl;
bool ok = getSocketOption(env, fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl);
return ok ? integerValueOf(env, ttl) : NULL;
} else {
return getSocketOption_Integer(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS);
}
#else
case JAVASOCKOPT_MULTICAST_TTL:
case JAVASOCKOPT_IP_MULTICAST_IF:
case JAVASOCKOPT_IP_MULTICAST_IF2:
case JAVASOCKOPT_IP_MULTICAST_LOOP:
jniThrowException(env, "java/lang/UnsupportedOperationException", NULL);
return NULL;
#endif // def ENABLE_MULTICAST
default:
jniThrowSocketException(env, ENOPROTOOPT);
return NULL;
}
}