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/* * Copyright 2016 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. */ /* * Since glibc 2.8, the _GNU_SOURCE feature test macro must be defined * (before including any header files) in order to obtain the * definition of the ucred structure. See */ #define _GNU_SOURCE #include #include #include #include #include // SOL_UDP #include #include // TCP_NOTSENT_LOWAT is a linux specific define #include "netty_epoll_linuxsocket.h" #include "netty_unix_errors.h" #include "netty_unix_filedescriptor.h" #include "netty_unix_jni.h" #include "netty_unix_socket.h" #include "netty_unix_util.h" #define LINUXSOCKET_CLASSNAME "io/netty/channel/epoll/LinuxSocket" // TCP_FASTOPEN is defined in linux 3.7. We define this here so older kernels can compile. #ifndef TCP_FASTOPEN #define TCP_FASTOPEN 23 #endif // TCP_FASTOPEN_CONNECT is defined in linux 4.11. We define this here so older kernels can compile. #ifndef TCP_FASTOPEN_CONNECT #define TCP_FASTOPEN_CONNECT 30 #endif // TCP_NOTSENT_LOWAT is defined in linux 3.12. We define this here so older kernels can compile. #ifndef TCP_NOTSENT_LOWAT #define TCP_NOTSENT_LOWAT 25 #endif // SO_BUSY_POLL is defined in linux 3.11. We define this here so older kernels can compile. #ifndef SO_BUSY_POLL #define SO_BUSY_POLL 46 #endif // UDP_GRO is defined in linux 5. We define this here so older kernels can compile. #ifndef UDP_GRO #define UDP_GRO 104 #endif static jclass peerCredentialsClass = NULL; static jmethodID peerCredentialsMethodId = NULL; static jfieldID fileChannelFieldId = NULL; static jfieldID transferredFieldId = NULL; static jfieldID fdFieldId = NULL; static jfieldID fileDescriptorFieldId = NULL; // JNI Registered Methods Begin static void netty_epoll_linuxsocket_setTimeToLive(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_TTL, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setIpMulticastLoop(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jint optval) { if (ipv6 == JNI_TRUE) { u_int val = (u_int) optval; netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &val, sizeof(val)); } else { u_char val = (u_char) optval; netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_MULTICAST_LOOP, &val, sizeof(val)); } } static void netty_epoll_linuxsocket_setInterface(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray interfaceAddress, jint scopeId, jint interfaceIndex) { struct sockaddr_storage interfaceAddr; socklen_t interfaceAddrSize; struct sockaddr_in* interfaceIpAddr; memset(&interfaceAddr, 0, sizeof(interfaceAddr)); if (ipv6 == JNI_TRUE) { if (interfaceIndex == -1) { netty_unix_errors_throwIOException(env, "Unable to find network index"); return; } netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &interfaceIndex, sizeof(interfaceIndex)); } else { if (netty_unix_socket_initSockaddr(env, ipv6, interfaceAddress, scopeId, 0, &interfaceAddr, &interfaceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr"); return; } interfaceIpAddr = (struct sockaddr_in*) &interfaceAddr; netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_MULTICAST_IF, &interfaceIpAddr->sin_addr, sizeof(interfaceIpAddr->sin_addr)); } } static void netty_epoll_linuxsocket_setTcpCork(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_CORK, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpQuickAck(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_QUICKACK, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpDeferAccept(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpNotSentLowAt(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_NOTSENT_LOWAT, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpFastOpen(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_FASTOPEN, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpKeepIdle(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_KEEPIDLE, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpKeepIntvl(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_KEEPINTVL, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpKeepCnt(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_KEEPCNT, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setTcpUserTimeout(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_TCP, TCP_USER_TIMEOUT, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setIpFreeBind(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_FREEBIND, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setIpTransparent(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, SOL_IP, IP_TRANSPARENT, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setIpRecvOrigDestAddr(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_RECVORIGDSTADDR, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_setSoBusyPoll(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, SOL_SOCKET, SO_BUSY_POLL, &optval, sizeof(optval)); } static void netty_epoll_linuxsocket_joinGroup(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray groupAddress, jbyteArray interfaceAddress, jint scopeId, jint interfaceIndex) { struct sockaddr_storage groupAddr; socklen_t groupAddrSize; struct sockaddr_storage interfaceAddr; socklen_t interfaceAddrSize; struct sockaddr_in* groupIpAddr; struct sockaddr_in* interfaceIpAddr; struct ip_mreq mreq; struct sockaddr_in6* groupIp6Addr; struct ipv6_mreq mreq6; memset(&groupAddr, 0, sizeof(groupAddr)); memset(&interfaceAddr, 0, sizeof(interfaceAddr)); if (netty_unix_socket_initSockaddr(env, ipv6, groupAddress, scopeId, 0, &groupAddr, &groupAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for groupAddress"); return; } switch (groupAddr.ss_family) { case AF_INET: if (netty_unix_socket_initSockaddr(env, ipv6, interfaceAddress, scopeId, 0, &interfaceAddr, &interfaceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for interfaceAddr"); return; } interfaceIpAddr = (struct sockaddr_in*) &interfaceAddr; groupIpAddr = (struct sockaddr_in*) &groupAddr; memcpy(&mreq.imr_multiaddr, &groupIpAddr->sin_addr, sizeof(groupIpAddr->sin_addr)); memcpy(&mreq.imr_interface, &interfaceIpAddr->sin_addr, sizeof(interfaceIpAddr->sin_addr)); netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)); break; case AF_INET6: if (interfaceIndex == -1) { netty_unix_errors_throwIOException(env, "Unable to find network index"); return; } mreq6.ipv6mr_interface = interfaceIndex; groupIp6Addr = (struct sockaddr_in6*) &groupAddr; memcpy(&mreq6.ipv6mr_multiaddr, &groupIp6Addr->sin6_addr, sizeof(groupIp6Addr->sin6_addr)); netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq6, sizeof(mreq6)); break; default: netty_unix_errors_throwIOException(env, "Address family not supported"); break; } } static void netty_epoll_linuxsocket_joinSsmGroup(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray groupAddress, jbyteArray interfaceAddress, jint scopeId, jint interfaceIndex, jbyteArray sourceAddress) { struct sockaddr_storage groupAddr; socklen_t groupAddrSize; struct sockaddr_storage interfaceAddr; socklen_t interfaceAddrSize; struct sockaddr_storage sourceAddr; socklen_t sourceAddrSize; struct sockaddr_in* groupIpAddr; struct sockaddr_in* interfaceIpAddr; struct sockaddr_in* sourceIpAddr; struct ip_mreq_source mreq; struct group_source_req mreq6; memset(&groupAddr, 0, sizeof(groupAddr)); memset(&sourceAddr, 0, sizeof(sourceAddr)); memset(&interfaceAddr, 0, sizeof(interfaceAddr)); if (netty_unix_socket_initSockaddr(env, ipv6, groupAddress, scopeId, 0, &groupAddr, &groupAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for groupAddress"); return; } if (netty_unix_socket_initSockaddr(env, ipv6, sourceAddress, scopeId, 0, &sourceAddr, &sourceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for sourceAddress"); return; } switch (groupAddr.ss_family) { case AF_INET: if (netty_unix_socket_initSockaddr(env, ipv6, interfaceAddress, scopeId, 0, &interfaceAddr, &interfaceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for interfaceAddress"); return; } interfaceIpAddr = (struct sockaddr_in*) &interfaceAddr; groupIpAddr = (struct sockaddr_in*) &groupAddr; sourceIpAddr = (struct sockaddr_in*) &sourceAddr; memcpy(&mreq.imr_multiaddr, &groupIpAddr->sin_addr, sizeof(groupIpAddr->sin_addr)); memcpy(&mreq.imr_interface, &interfaceIpAddr->sin_addr, sizeof(interfaceIpAddr->sin_addr)); memcpy(&mreq.imr_sourceaddr, &sourceIpAddr->sin_addr, sizeof(sourceIpAddr->sin_addr)); netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_ADD_SOURCE_MEMBERSHIP, &mreq, sizeof(mreq)); break; case AF_INET6: if (interfaceIndex == -1) { netty_unix_errors_throwIOException(env, "Unable to find network index"); return; } mreq6.gsr_group = groupAddr; mreq6.gsr_interface = interfaceIndex; mreq6.gsr_source = sourceAddr; netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, MCAST_JOIN_SOURCE_GROUP, &mreq6, sizeof(mreq6)); break; default: netty_unix_errors_throwIOException(env, "Address family not supported"); break; } } static void netty_epoll_linuxsocket_leaveGroup(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray groupAddress, jbyteArray interfaceAddress, jint scopeId, jint interfaceIndex) { struct sockaddr_storage groupAddr; socklen_t groupAddrSize; struct sockaddr_storage interfaceAddr; socklen_t interfaceAddrSize; struct sockaddr_in* groupIpAddr; struct sockaddr_in* interfaceIpAddr; struct ip_mreq mreq; struct sockaddr_in6* groupIp6Addr; struct ipv6_mreq mreq6; memset(&groupAddr, 0, sizeof(groupAddr)); memset(&interfaceAddr, 0, sizeof(interfaceAddr)); if (netty_unix_socket_initSockaddr(env, ipv6, groupAddress, scopeId, 0, &groupAddr, &groupAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for groupAddress"); return; } switch (groupAddr.ss_family) { case AF_INET: if (netty_unix_socket_initSockaddr(env, ipv6, interfaceAddress, scopeId, 0, &interfaceAddr, &interfaceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for interfaceAddress"); return; } interfaceIpAddr = (struct sockaddr_in*) &interfaceAddr; groupIpAddr = (struct sockaddr_in*) &groupAddr; memcpy(&mreq.imr_multiaddr, &groupIpAddr->sin_addr, sizeof(groupIpAddr->sin_addr)); memcpy(&mreq.imr_interface, &interfaceIpAddr->sin_addr, sizeof(interfaceIpAddr->sin_addr)); netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)); break; case AF_INET6: if (interfaceIndex == -1) { netty_unix_errors_throwIOException(env, "Unable to find network index"); return; } mreq6.ipv6mr_interface = interfaceIndex; groupIp6Addr = (struct sockaddr_in6*) &groupAddr; memcpy(&mreq6.ipv6mr_multiaddr, &groupIp6Addr->sin6_addr, sizeof(groupIp6Addr->sin6_addr)); netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, IPV6_LEAVE_GROUP, &mreq6, sizeof(mreq6)); break; default: netty_unix_errors_throwIOException(env, "Address family not supported"); break; } } static void netty_epoll_linuxsocket_leaveSsmGroup(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray groupAddress, jbyteArray interfaceAddress, jint scopeId, jint interfaceIndex, jbyteArray sourceAddress) { struct sockaddr_storage groupAddr; socklen_t groupAddrSize; struct sockaddr_storage interfaceAddr; socklen_t interfaceAddrSize; struct sockaddr_storage sourceAddr; socklen_t sourceAddrSize; struct sockaddr_in* groupIpAddr; struct sockaddr_in* interfaceIpAddr; struct sockaddr_in* sourceIpAddr; struct ip_mreq_source mreq; struct group_source_req mreq6; memset(&groupAddr, 0, sizeof(groupAddr)); memset(&sourceAddr, 0, sizeof(sourceAddr)); memset(&interfaceAddr, 0, sizeof(interfaceAddr)); if (netty_unix_socket_initSockaddr(env, ipv6, groupAddress, scopeId, 0, &groupAddr, &groupAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for groupAddress"); return; } if (netty_unix_socket_initSockaddr(env, ipv6, sourceAddress, scopeId, 0, &sourceAddr, &sourceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for sourceAddress"); return; } switch (groupAddr.ss_family) { case AF_INET: if (netty_unix_socket_initSockaddr(env, ipv6, interfaceAddress, scopeId, 0, &interfaceAddr, &interfaceAddrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr for interfaceAddress"); return; } interfaceIpAddr = (struct sockaddr_in*) &interfaceAddr; groupIpAddr = (struct sockaddr_in*) &groupAddr; sourceIpAddr = (struct sockaddr_in*) &sourceAddr; memcpy(&mreq.imr_multiaddr, &groupIpAddr->sin_addr, sizeof(groupIpAddr->sin_addr)); memcpy(&mreq.imr_interface, &interfaceIpAddr->sin_addr, sizeof(interfaceIpAddr->sin_addr)); memcpy(&mreq.imr_sourceaddr, &sourceIpAddr->sin_addr, sizeof(sourceIpAddr->sin_addr)); netty_unix_socket_setOption(env, fd, IPPROTO_IP, IP_DROP_SOURCE_MEMBERSHIP, &mreq, sizeof(mreq)); break; case AF_INET6: if (interfaceIndex == -1) { netty_unix_errors_throwIOException(env, "Unable to find network index"); return; } mreq6.gsr_group = groupAddr; mreq6.gsr_interface = interfaceIndex; mreq6.gsr_source = sourceAddr; netty_unix_socket_setOption(env, fd, IPPROTO_IPV6, MCAST_LEAVE_SOURCE_GROUP, &mreq6, sizeof(mreq6)); break; default: netty_unix_errors_throwIOException(env, "Address family not supported"); break; } } static void netty_epoll_linuxsocket_setTcpMd5Sig(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6, jbyteArray address, jint scopeId, jbyteArray key) { struct sockaddr_storage addr; socklen_t addrSize; memset(&addr, 0, sizeof(addr)); if (netty_unix_socket_initSockaddr(env, ipv6, address, scopeId, 0, &addr, &addrSize) == -1) { netty_unix_errors_throwIOException(env, "Could not init sockaddr"); return; } struct tcp_md5sig md5sig; memset(&md5sig, 0, sizeof(md5sig)); md5sig.tcpm_addr.ss_family = addr.ss_family; struct sockaddr_in* ipaddr; struct sockaddr_in6* ip6addr; switch (addr.ss_family) { case AF_INET: ipaddr = (struct sockaddr_in*) &addr; memcpy(&((struct sockaddr_in *) &md5sig.tcpm_addr)->sin_addr, &ipaddr->sin_addr, sizeof(ipaddr->sin_addr)); break; case AF_INET6: ip6addr = (struct sockaddr_in6*) &addr; memcpy(&((struct sockaddr_in6 *) &md5sig.tcpm_addr)->sin6_addr, &ip6addr->sin6_addr, sizeof(ip6addr->sin6_addr)); break; } if (key != NULL) { md5sig.tcpm_keylen = (*env)->GetArrayLength(env, key); (*env)->GetByteArrayRegion(env, key, 0, md5sig.tcpm_keylen, (void *) &md5sig.tcpm_key); if ((*env)->ExceptionCheck(env) == JNI_TRUE) { return; } } if (setsockopt(fd, IPPROTO_TCP, TCP_MD5SIG, &md5sig, sizeof(md5sig)) < 0) { netty_unix_errors_throwIOExceptionErrorNo(env, "setsockopt() failed: ", errno); } } static int netty_epoll_linuxsocket_getInterface(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6) { if (ipv6 == JNI_TRUE) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &optval, sizeof(optval)) == -1) { return -1; } return optval; } else { struct in_addr optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_MULTICAST_IF, &optval, sizeof(optval)) == -1) { return -1; } return ntohl(optval.s_addr); } } static jint netty_epoll_linuxsocket_getTimeToLive(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_TTL, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getIpMulticastLoop(JNIEnv* env, jclass clazz, jint fd, jboolean ipv6) { if (ipv6 == JNI_TRUE) { u_int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &optval, sizeof(optval)) == -1) { return -1; } return (jint) optval; } else { u_char optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_MULTICAST_LOOP, &optval, sizeof(optval)) == -1) { return -1; } return (jint) optval; } } static jint netty_epoll_linuxsocket_getTcpKeepIdle(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_KEEPIDLE, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getTcpKeepIntvl(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_KEEPINTVL, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getTcpKeepCnt(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_KEEPCNT, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getTcpUserTimeout(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_USER_TIMEOUT, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_isIpFreeBind(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_FREEBIND, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_isIpTransparent(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, SOL_IP, IP_TRANSPARENT, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_isIpRecvOrigDestAddr(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_IP, IP_RECVORIGDSTADDR, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static void netty_epoll_linuxsocket_getTcpInfo(JNIEnv* env, jclass clazz, jint fd, jlongArray array) { struct tcp_info tcp_info; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_INFO, &tcp_info, sizeof(tcp_info)) == -1) { return; } jlong cArray[32]; // Expand to 64 bits, then cast away unsigned-ness. cArray[0] = (jlong) (uint64_t) tcp_info.tcpi_state; cArray[1] = (jlong) (uint64_t) tcp_info.tcpi_ca_state; cArray[2] = (jlong) (uint64_t) tcp_info.tcpi_retransmits; cArray[3] = (jlong) (uint64_t) tcp_info.tcpi_probes; cArray[4] = (jlong) (uint64_t) tcp_info.tcpi_backoff; cArray[5] = (jlong) (uint64_t) tcp_info.tcpi_options; cArray[6] = (jlong) (uint64_t) tcp_info.tcpi_snd_wscale; cArray[7] = (jlong) (uint64_t) tcp_info.tcpi_rcv_wscale; cArray[8] = (jlong) (uint64_t) tcp_info.tcpi_rto; cArray[9] = (jlong) (uint64_t) tcp_info.tcpi_ato; cArray[10] = (jlong) (uint64_t) tcp_info.tcpi_snd_mss; cArray[11] = (jlong) (uint64_t) tcp_info.tcpi_rcv_mss; cArray[12] = (jlong) (uint64_t) tcp_info.tcpi_unacked; cArray[13] = (jlong) (uint64_t) tcp_info.tcpi_sacked; cArray[14] = (jlong) (uint64_t) tcp_info.tcpi_lost; cArray[15] = (jlong) (uint64_t) tcp_info.tcpi_retrans; cArray[16] = (jlong) (uint64_t) tcp_info.tcpi_fackets; cArray[17] = (jlong) (uint64_t) tcp_info.tcpi_last_data_sent; cArray[18] = (jlong) (uint64_t) tcp_info.tcpi_last_ack_sent; cArray[19] = (jlong) (uint64_t) tcp_info.tcpi_last_data_recv; cArray[20] = (jlong) (uint64_t) tcp_info.tcpi_last_ack_recv; cArray[21] = (jlong) (uint64_t) tcp_info.tcpi_pmtu; cArray[22] = (jlong) (uint64_t) tcp_info.tcpi_rcv_ssthresh; cArray[23] = (jlong) (uint64_t) tcp_info.tcpi_rtt; cArray[24] = (jlong) (uint64_t) tcp_info.tcpi_rttvar; cArray[25] = (jlong) (uint64_t) tcp_info.tcpi_snd_ssthresh; cArray[26] = (jlong) (uint64_t) tcp_info.tcpi_snd_cwnd; cArray[27] = (jlong) (uint64_t) tcp_info.tcpi_advmss; cArray[28] = (jlong) (uint64_t) tcp_info.tcpi_reordering; cArray[29] = (jlong) (uint64_t) tcp_info.tcpi_rcv_rtt; cArray[30] = (jlong) (uint64_t) tcp_info.tcpi_rcv_space; cArray[31] = (jlong) (uint64_t) tcp_info.tcpi_total_retrans; (*env)->SetLongArrayRegion(env, array, 0, 32, cArray); } static jint netty_epoll_linuxsocket_isTcpCork(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_CORK, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getSoBusyPoll(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, SOL_SOCKET, SO_BUSY_POLL, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getTcpDeferAccept(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_isTcpQuickAck(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_QUICKACK, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jint netty_epoll_linuxsocket_getTcpNotSentLowAt(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, IPPROTO_TCP, TCP_NOTSENT_LOWAT, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static jobject netty_epoll_linuxsocket_getPeerCredentials(JNIEnv *env, jclass clazz, jint fd) { struct ucred credentials; if(netty_unix_socket_getOption(env,fd, SOL_SOCKET, SO_PEERCRED, &credentials, sizeof (credentials)) == -1) { return NULL; } jintArray gids = (*env)->NewIntArray(env, 1); (*env)->SetIntArrayRegion(env, gids, 0, 1, (jint*) &credentials.gid); return (*env)->NewObject(env, peerCredentialsClass, peerCredentialsMethodId, credentials.pid, credentials.uid, gids); } static jint netty_epoll_linuxsocket_isUdpGro(JNIEnv* env, jclass clazz, jint fd) { int optval; if (netty_unix_socket_getOption(env, fd, SOL_UDP, UDP_GRO, &optval, sizeof(optval)) == -1) { return -1; } return optval; } static void netty_epoll_linuxsocket_setUdpGro(JNIEnv* env, jclass clazz, jint fd, jint optval) { netty_unix_socket_setOption(env, fd, SOL_UDP, UDP_GRO, &optval, sizeof(optval)); } static jlong netty_epoll_linuxsocket_sendFile(JNIEnv* env, jclass clazz, jint fd, jobject fileRegion, jlong base_off, jlong off, jlong len) { jobject fileChannel = (*env)->GetObjectField(env, fileRegion, fileChannelFieldId); if (fileChannel == NULL) { netty_unix_errors_throwRuntimeException(env, "failed to get DefaultFileRegion.file"); return -1; } jobject fileDescriptor = (*env)->GetObjectField(env, fileChannel, fileDescriptorFieldId); if (fileDescriptor == NULL) { netty_unix_errors_throwRuntimeException(env, "failed to get FileChannelImpl.fd"); return -1; } jint srcFd = (*env)->GetIntField(env, fileDescriptor, fdFieldId); if (srcFd == -1) { netty_unix_errors_throwRuntimeException(env, "failed to get FileDescriptor.fd"); return -1; } ssize_t res; off_t offset = base_off + off; int err; do { res = sendfile(fd, srcFd, &offset, (size_t) len); } while (res == -1 && ((err = errno) == EINTR)); if (res < 0) { return -err; } if (res > 0) { // update the transferred field in DefaultFileRegion (*env)->SetLongField(env, fileRegion, transferredFieldId, off + res); } return res; } // JNI Registered Methods End // JNI Method Registration Table Begin static const JNINativeMethod fixed_method_table[] = { { "setTimeToLive", "(II)V", (void *) netty_epoll_linuxsocket_setTimeToLive }, { "getTimeToLive", "(I)I", (void *) netty_epoll_linuxsocket_getTimeToLive }, { "setInterface", "(IZ[BII)V", (void *) netty_epoll_linuxsocket_setInterface }, { "getInterface", "(IZ)I", (void *) netty_epoll_linuxsocket_getInterface }, { "setIpMulticastLoop", "(IZI)V", (void * ) netty_epoll_linuxsocket_setIpMulticastLoop }, { "getIpMulticastLoop", "(IZ)I", (void * ) netty_epoll_linuxsocket_getIpMulticastLoop }, { "setTcpCork", "(II)V", (void *) netty_epoll_linuxsocket_setTcpCork }, { "setSoBusyPoll", "(II)V", (void *) netty_epoll_linuxsocket_setSoBusyPoll }, { "setTcpQuickAck", "(II)V", (void *) netty_epoll_linuxsocket_setTcpQuickAck }, { "setTcpDeferAccept", "(II)V", (void *) netty_epoll_linuxsocket_setTcpDeferAccept }, { "setTcpNotSentLowAt", "(II)V", (void *) netty_epoll_linuxsocket_setTcpNotSentLowAt }, { "isTcpCork", "(I)I", (void *) netty_epoll_linuxsocket_isTcpCork }, { "getSoBusyPoll", "(I)I", (void *) netty_epoll_linuxsocket_getSoBusyPoll }, { "getTcpDeferAccept", "(I)I", (void *) netty_epoll_linuxsocket_getTcpDeferAccept }, { "getTcpNotSentLowAt", "(I)I", (void *) netty_epoll_linuxsocket_getTcpNotSentLowAt }, { "isTcpQuickAck", "(I)I", (void *) netty_epoll_linuxsocket_isTcpQuickAck }, { "setTcpFastOpen", "(II)V", (void *) netty_epoll_linuxsocket_setTcpFastOpen }, { "setTcpKeepIdle", "(II)V", (void *) netty_epoll_linuxsocket_setTcpKeepIdle }, { "setTcpKeepIntvl", "(II)V", (void *) netty_epoll_linuxsocket_setTcpKeepIntvl }, { "setTcpKeepCnt", "(II)V", (void *) netty_epoll_linuxsocket_setTcpKeepCnt }, { "setTcpUserTimeout", "(II)V", (void *) netty_epoll_linuxsocket_setTcpUserTimeout }, { "setIpFreeBind", "(II)V", (void *) netty_epoll_linuxsocket_setIpFreeBind }, { "setIpTransparent", "(II)V", (void *) netty_epoll_linuxsocket_setIpTransparent }, { "setIpRecvOrigDestAddr", "(II)V", (void *) netty_epoll_linuxsocket_setIpRecvOrigDestAddr }, { "getTcpKeepIdle", "(I)I", (void *) netty_epoll_linuxsocket_getTcpKeepIdle }, { "getTcpKeepIntvl", "(I)I", (void *) netty_epoll_linuxsocket_getTcpKeepIntvl }, { "getTcpKeepCnt", "(I)I", (void *) netty_epoll_linuxsocket_getTcpKeepCnt }, { "getTcpUserTimeout", "(I)I", (void *) netty_epoll_linuxsocket_getTcpUserTimeout }, { "isIpFreeBind", "(I)I", (void *) netty_epoll_linuxsocket_isIpFreeBind }, { "isIpTransparent", "(I)I", (void *) netty_epoll_linuxsocket_isIpTransparent }, { "isIpRecvOrigDestAddr", "(I)I", (void *) netty_epoll_linuxsocket_isIpRecvOrigDestAddr }, { "getTcpInfo", "(I[J)V", (void *) netty_epoll_linuxsocket_getTcpInfo }, { "setTcpMd5Sig", "(IZ[BI[B)V", (void *) netty_epoll_linuxsocket_setTcpMd5Sig }, { "joinGroup", "(IZ[B[BII)V", (void *) netty_epoll_linuxsocket_joinGroup }, { "joinSsmGroup", "(IZ[B[BII[B)V", (void *) netty_epoll_linuxsocket_joinSsmGroup }, { "leaveGroup", "(IZ[B[BII)V", (void *) netty_epoll_linuxsocket_leaveGroup }, { "leaveSsmGroup", "(IZ[B[BII[B)V", (void *) netty_epoll_linuxsocket_leaveSsmGroup }, { "isUdpGro", "(I)I", (void *) netty_epoll_linuxsocket_isUdpGro }, { "setUdpGro", "(II)V", (void *) netty_epoll_linuxsocket_setUdpGro } // "sendFile" has a dynamic signature }; static const jint fixed_method_table_size = sizeof(fixed_method_table) / sizeof(fixed_method_table[0]); static jint dynamicMethodsTableSize() { return fixed_method_table_size + 2; // 2 is for the dynamic method signatures. } 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/PeerCredentials;", dynamicTypeName, error); NETTY_JNI_UTIL_PREPEND("(I)L", dynamicTypeName, dynamicMethod->signature, error); dynamicMethod->name = "getPeerCredentials"; dynamicMethod->fnPtr = (void *) netty_epoll_linuxsocket_getPeerCredentials; netty_jni_util_free_dynamic_name(&dynamicTypeName); ++dynamicMethod; NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/DefaultFileRegion;JJJ)J", dynamicTypeName, error); NETTY_JNI_UTIL_PREPEND("(IL", dynamicTypeName, dynamicMethod->signature, error); dynamicMethod->name = "sendFile"; dynamicMethod->fnPtr = (void *) netty_epoll_linuxsocket_sendFile; 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 // Native to reflect that. jint netty_epoll_linuxsocket_JNI_OnLoad(JNIEnv* env, const char* packagePrefix) { int ret = JNI_ERR; char* nettyClassName = NULL; jclass fileRegionCls = NULL; jclass fileChannelCls = NULL; jclass fileDescriptorCls = NULL; // Register the methods which are not referenced by static member variables JNINativeMethod* dynamicMethods = createDynamicMethodsTable(packagePrefix); if (dynamicMethods == NULL) { goto done; } if (netty_jni_util_register_natives(env, packagePrefix, LINUXSOCKET_CLASSNAME, dynamicMethods, dynamicMethodsTableSize()) != 0) { goto done; } NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/unix/PeerCredentials", nettyClassName, done); NETTY_JNI_UTIL_LOAD_CLASS(env, peerCredentialsClass, nettyClassName, done); netty_jni_util_free_dynamic_name(&nettyClassName); NETTY_JNI_UTIL_GET_METHOD(env, peerCredentialsClass, peerCredentialsMethodId, "", "(II[I)V", done); NETTY_JNI_UTIL_PREPEND(packagePrefix, "io/netty/channel/DefaultFileRegion", nettyClassName, done); NETTY_JNI_UTIL_FIND_CLASS(env, fileRegionCls, nettyClassName, done); netty_jni_util_free_dynamic_name(&nettyClassName); NETTY_JNI_UTIL_GET_FIELD(env, fileRegionCls, fileChannelFieldId, "file", "Ljava/nio/channels/FileChannel;", done); NETTY_JNI_UTIL_GET_FIELD(env, fileRegionCls, transferredFieldId, "transferred", "J", done); NETTY_JNI_UTIL_FIND_CLASS(env, fileChannelCls, "sun/nio/ch/FileChannelImpl", done); NETTY_JNI_UTIL_GET_FIELD(env, fileChannelCls, fileDescriptorFieldId, "fd", "Ljava/io/FileDescriptor;", done); NETTY_JNI_UTIL_FIND_CLASS(env, fileDescriptorCls, "java/io/FileDescriptor", done); NETTY_JNI_UTIL_TRY_GET_FIELD(env, fileDescriptorCls, fdFieldId, "fd", "I"); if (fdFieldId == NULL) { // Android uses a different field name, let's try it. NETTY_JNI_UTIL_GET_FIELD(env, fileDescriptorCls, fdFieldId, "descriptor", "I", done); } ret = NETTY_JNI_UTIL_JNI_VERSION; done: netty_jni_util_free_dynamic_methods_table(dynamicMethods, fixed_method_table_size, dynamicMethodsTableSize()); free(nettyClassName); return ret; } void netty_epoll_linuxsocket_JNI_OnUnLoad(JNIEnv* env, const char* packagePrefix) { NETTY_JNI_UTIL_UNLOAD_CLASS(env, peerCredentialsClass); netty_jni_util_unregister_natives(env, packagePrefix, LINUXSOCKET_CLASSNAME); }
