| /* |
| * Copyright 2008, The Android Open Source Project |
| * |
| * Licensed 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 |
| * |
| * http://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. |
| */ |
| |
| #define LOG_TAG "NetUtils" |
| |
| #include <vector> |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include <nativehelper/ScopedLocalRef.h> |
| #include "NetdClient.h" |
| #include <utils/misc.h> |
| #include <android_runtime/AndroidRuntime.h> |
| #include <utils/Log.h> |
| #include <arpa/inet.h> |
| #include <net/if.h> |
| #include <linux/filter.h> |
| #include <linux/if_arp.h> |
| #include <linux/tcp.h> |
| #include <netinet/ether.h> |
| #include <netinet/icmp6.h> |
| #include <netinet/ip.h> |
| #include <netinet/ip6.h> |
| #include <netinet/udp.h> |
| #include <cutils/properties.h> |
| |
| #include "core_jni_helpers.h" |
| |
| extern "C" { |
| int ifc_enable(const char *ifname); |
| int ifc_disable(const char *ifname); |
| } |
| |
| #define NETUTILS_PKG_NAME "android/net/NetworkUtils" |
| |
| namespace android { |
| |
| static const uint32_t kEtherTypeOffset = offsetof(ether_header, ether_type); |
| static const uint32_t kEtherHeaderLen = sizeof(ether_header); |
| static const uint32_t kIPv4Protocol = kEtherHeaderLen + offsetof(iphdr, protocol); |
| static const uint32_t kIPv4FlagsOffset = kEtherHeaderLen + offsetof(iphdr, frag_off); |
| static const uint32_t kIPv6NextHeader = kEtherHeaderLen + offsetof(ip6_hdr, ip6_nxt); |
| static const uint32_t kIPv6PayloadStart = kEtherHeaderLen + sizeof(ip6_hdr); |
| static const uint32_t kICMPv6TypeOffset = kIPv6PayloadStart + offsetof(icmp6_hdr, icmp6_type); |
| static const uint32_t kUDPSrcPortIndirectOffset = kEtherHeaderLen + offsetof(udphdr, source); |
| static const uint32_t kUDPDstPortIndirectOffset = kEtherHeaderLen + offsetof(udphdr, dest); |
| static const uint16_t kDhcpClientPort = 68; |
| |
| constexpr int MAXPACKETSIZE = 8 * 1024; |
| // FrameworkListener limits the size of commands to 1024 bytes. TODO: fix this. |
| constexpr int MAXCMDSIZE = 1024; |
| |
| static void throwErrnoException(JNIEnv* env, const char* functionName, int error) { |
| ScopedLocalRef<jstring> detailMessage(env, env->NewStringUTF(functionName)); |
| if (detailMessage.get() == NULL) { |
| // Not really much we can do here. We're probably dead in the water, |
| // but let's try to stumble on... |
| env->ExceptionClear(); |
| } |
| static jclass errnoExceptionClass = |
| MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/system/ErrnoException")); |
| |
| static jmethodID errnoExceptionCtor = |
| GetMethodIDOrDie(env, errnoExceptionClass, |
| "<init>", "(Ljava/lang/String;I)V"); |
| |
| jobject exception = env->NewObject(errnoExceptionClass, |
| errnoExceptionCtor, |
| detailMessage.get(), |
| error); |
| env->Throw(reinterpret_cast<jthrowable>(exception)); |
| } |
| |
| static void android_net_utils_attachDhcpFilter(JNIEnv *env, jobject clazz, jobject javaFd) |
| { |
| struct sock_filter filter_code[] = { |
| // Check the protocol is UDP. |
| BPF_STMT(BPF_LD | BPF_B | BPF_ABS, kIPv4Protocol), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, IPPROTO_UDP, 0, 6), |
| |
| // Check this is not a fragment. |
| BPF_STMT(BPF_LD | BPF_H | BPF_ABS, kIPv4FlagsOffset), |
| BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, IP_OFFMASK, 4, 0), |
| |
| // Get the IP header length. |
| BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, kEtherHeaderLen), |
| |
| // Check the destination port. |
| BPF_STMT(BPF_LD | BPF_H | BPF_IND, kUDPDstPortIndirectOffset), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, kDhcpClientPort, 0, 1), |
| |
| // Accept or reject. |
| BPF_STMT(BPF_RET | BPF_K, 0xffff), |
| BPF_STMT(BPF_RET | BPF_K, 0) |
| }; |
| struct sock_fprog filter = { |
| sizeof(filter_code) / sizeof(filter_code[0]), |
| filter_code, |
| }; |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno)); |
| } |
| } |
| |
| static void android_net_utils_attachRaFilter(JNIEnv *env, jobject clazz, jobject javaFd, |
| jint hardwareAddressType) |
| { |
| if (hardwareAddressType != ARPHRD_ETHER) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "attachRaFilter only supports ARPHRD_ETHER"); |
| return; |
| } |
| |
| struct sock_filter filter_code[] = { |
| // Check IPv6 Next Header is ICMPv6. |
| BPF_STMT(BPF_LD | BPF_B | BPF_ABS, kIPv6NextHeader), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, IPPROTO_ICMPV6, 0, 3), |
| |
| // Check ICMPv6 type is Router Advertisement. |
| BPF_STMT(BPF_LD | BPF_B | BPF_ABS, kICMPv6TypeOffset), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, ND_ROUTER_ADVERT, 0, 1), |
| |
| // Accept or reject. |
| BPF_STMT(BPF_RET | BPF_K, 0xffff), |
| BPF_STMT(BPF_RET | BPF_K, 0) |
| }; |
| struct sock_fprog filter = { |
| sizeof(filter_code) / sizeof(filter_code[0]), |
| filter_code, |
| }; |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno)); |
| } |
| } |
| |
| // TODO: Move all this filter code into libnetutils. |
| static void android_net_utils_attachControlPacketFilter( |
| JNIEnv *env, jobject clazz, jobject javaFd, jint hardwareAddressType) { |
| if (hardwareAddressType != ARPHRD_ETHER) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "attachControlPacketFilter only supports ARPHRD_ETHER"); |
| return; |
| } |
| |
| // Capture all: |
| // - ARPs |
| // - DHCPv4 packets |
| // - Router Advertisements & Solicitations |
| // - Neighbor Advertisements & Solicitations |
| // |
| // tcpdump: |
| // arp or |
| // '(ip and udp port 68)' or |
| // '(icmp6 and ip6[40] >= 133 and ip6[40] <= 136)' |
| struct sock_filter filter_code[] = { |
| // Load the link layer next payload field. |
| BPF_STMT(BPF_LD | BPF_H | BPF_ABS, kEtherTypeOffset), |
| |
| // Accept all ARP. |
| // TODO: Figure out how to better filter ARPs on noisy networks. |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, ETHERTYPE_ARP, 16, 0), |
| |
| // If IPv4: |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, ETHERTYPE_IP, 0, 9), |
| |
| // Check the protocol is UDP. |
| BPF_STMT(BPF_LD | BPF_B | BPF_ABS, kIPv4Protocol), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, IPPROTO_UDP, 0, 14), |
| |
| // Check this is not a fragment. |
| BPF_STMT(BPF_LD | BPF_H | BPF_ABS, kIPv4FlagsOffset), |
| BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, IP_OFFMASK, 12, 0), |
| |
| // Get the IP header length. |
| BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, kEtherHeaderLen), |
| |
| // Check the source port. |
| BPF_STMT(BPF_LD | BPF_H | BPF_IND, kUDPSrcPortIndirectOffset), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, kDhcpClientPort, 8, 0), |
| |
| // Check the destination port. |
| BPF_STMT(BPF_LD | BPF_H | BPF_IND, kUDPDstPortIndirectOffset), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, kDhcpClientPort, 6, 7), |
| |
| // IPv6 ... |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, ETHERTYPE_IPV6, 0, 6), |
| // ... check IPv6 Next Header is ICMPv6 (ignore fragments), ... |
| BPF_STMT(BPF_LD | BPF_B | BPF_ABS, kIPv6NextHeader), |
| BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, IPPROTO_ICMPV6, 0, 4), |
| // ... and check the ICMPv6 type is one of RS/RA/NS/NA. |
| BPF_STMT(BPF_LD | BPF_B | BPF_ABS, kICMPv6TypeOffset), |
| BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, ND_ROUTER_SOLICIT, 0, 2), |
| BPF_JUMP(BPF_JMP | BPF_JGT | BPF_K, ND_NEIGHBOR_ADVERT, 1, 0), |
| |
| // Accept or reject. |
| BPF_STMT(BPF_RET | BPF_K, 0xffff), |
| BPF_STMT(BPF_RET | BPF_K, 0) |
| }; |
| struct sock_fprog filter = { |
| sizeof(filter_code) / sizeof(filter_code[0]), |
| filter_code, |
| }; |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno)); |
| } |
| } |
| |
| static void android_net_utils_attachDropAllBPFFilter(JNIEnv *env, jobject clazz, jobject javaFd) |
| { |
| struct sock_filter filter_code[] = { |
| // Reject all. |
| BPF_STMT(BPF_RET | BPF_K, 0) |
| }; |
| struct sock_fprog filter = { |
| sizeof(filter_code) / sizeof(filter_code[0]), |
| filter_code, |
| }; |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno)); |
| } |
| } |
| |
| static void android_net_utils_detachBPFFilter(JNIEnv *env, jobject clazz, jobject javaFd) |
| { |
| int dummy = 0; |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| if (setsockopt(fd, SOL_SOCKET, SO_DETACH_FILTER, &dummy, sizeof(dummy)) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(SO_DETACH_FILTER): %s", strerror(errno)); |
| } |
| |
| } |
| static void android_net_utils_setupRaSocket(JNIEnv *env, jobject clazz, jobject javaFd, |
| jint ifIndex) |
| { |
| static const int kLinkLocalHopLimit = 255; |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| |
| // Set an ICMPv6 filter that only passes Router Solicitations. |
| struct icmp6_filter rs_only; |
| ICMP6_FILTER_SETBLOCKALL(&rs_only); |
| ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &rs_only); |
| socklen_t len = sizeof(rs_only); |
| if (setsockopt(fd, IPPROTO_ICMPV6, ICMP6_FILTER, &rs_only, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(ICMP6_FILTER): %s", strerror(errno)); |
| return; |
| } |
| |
| // Most/all of the rest of these options can be set via Java code, but |
| // because we're here on account of setting an icmp6_filter go ahead |
| // and do it all natively for now. |
| // |
| // TODO: Consider moving these out to Java. |
| |
| // Set the multicast hoplimit to 255 (link-local only). |
| int hops = kLinkLocalHopLimit; |
| len = sizeof(hops); |
| if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(IPV6_MULTICAST_HOPS): %s", strerror(errno)); |
| return; |
| } |
| |
| // Set the unicast hoplimit to 255 (link-local only). |
| hops = kLinkLocalHopLimit; |
| len = sizeof(hops); |
| if (setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &hops, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(IPV6_UNICAST_HOPS): %s", strerror(errno)); |
| return; |
| } |
| |
| // Explicitly disable multicast loopback. |
| int off = 0; |
| len = sizeof(off); |
| if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &off, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(IPV6_MULTICAST_LOOP): %s", strerror(errno)); |
| return; |
| } |
| |
| // Specify the IPv6 interface to use for outbound multicast. |
| len = sizeof(ifIndex); |
| if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &ifIndex, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(IPV6_MULTICAST_IF): %s", strerror(errno)); |
| return; |
| } |
| |
| // Additional options to be considered: |
| // - IPV6_TCLASS |
| // - IPV6_RECVPKTINFO |
| // - IPV6_RECVHOPLIMIT |
| |
| // Bind to [::]. |
| const struct sockaddr_in6 sin6 = { |
| .sin6_family = AF_INET6, |
| .sin6_port = 0, |
| .sin6_flowinfo = 0, |
| .sin6_addr = IN6ADDR_ANY_INIT, |
| .sin6_scope_id = 0, |
| }; |
| auto sa = reinterpret_cast<const struct sockaddr *>(&sin6); |
| len = sizeof(sin6); |
| if (bind(fd, sa, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "bind(IN6ADDR_ANY): %s", strerror(errno)); |
| return; |
| } |
| |
| // Join the all-routers multicast group, ff02::2%index. |
| struct ipv6_mreq all_rtrs = { |
| .ipv6mr_multiaddr = {{{0xff,2,0,0,0,0,0,0,0,0,0,0,0,0,0,2}}}, |
| .ipv6mr_interface = ifIndex, |
| }; |
| len = sizeof(all_rtrs); |
| if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &all_rtrs, len) != 0) { |
| jniThrowExceptionFmt(env, "java/net/SocketException", |
| "setsockopt(IPV6_JOIN_GROUP): %s", strerror(errno)); |
| return; |
| } |
| } |
| |
| static jboolean android_net_utils_bindProcessToNetwork(JNIEnv *env, jobject thiz, jint netId) |
| { |
| return (jboolean) !setNetworkForProcess(netId); |
| } |
| |
| static jint android_net_utils_getBoundNetworkForProcess(JNIEnv *env, jobject thiz) |
| { |
| return getNetworkForProcess(); |
| } |
| |
| static jboolean android_net_utils_bindProcessToNetworkForHostResolution(JNIEnv *env, jobject thiz, |
| jint netId) |
| { |
| return (jboolean) !setNetworkForResolv(netId); |
| } |
| |
| static jint android_net_utils_bindSocketToNetwork(JNIEnv *env, jobject thiz, jint socket, |
| jint netId) |
| { |
| return setNetworkForSocket(netId, socket); |
| } |
| |
| static jboolean android_net_utils_protectFromVpn(JNIEnv *env, jobject thiz, jint socket) |
| { |
| return (jboolean) !protectFromVpn(socket); |
| } |
| |
| static jboolean android_net_utils_queryUserAccess(JNIEnv *env, jobject thiz, jint uid, jint netId) |
| { |
| return (jboolean) !queryUserAccess(uid, netId); |
| } |
| |
| static bool checkLenAndCopy(JNIEnv* env, const jbyteArray& addr, int len, void* dst) |
| { |
| if (env->GetArrayLength(addr) != len) { |
| return false; |
| } |
| env->GetByteArrayRegion(addr, 0, len, reinterpret_cast<jbyte*>(dst)); |
| return true; |
| } |
| |
| static void android_net_utils_addArpEntry(JNIEnv *env, jobject thiz, jbyteArray ethAddr, |
| jbyteArray ipv4Addr, jstring ifname, jobject javaFd) |
| { |
| struct arpreq req = {}; |
| struct sockaddr_in& netAddrStruct = *reinterpret_cast<sockaddr_in*>(&req.arp_pa); |
| struct sockaddr& ethAddrStruct = req.arp_ha; |
| |
| ethAddrStruct.sa_family = ARPHRD_ETHER; |
| if (!checkLenAndCopy(env, ethAddr, ETH_ALEN, ethAddrStruct.sa_data)) { |
| jniThrowException(env, "java/io/IOException", "Invalid ethAddr length"); |
| return; |
| } |
| |
| netAddrStruct.sin_family = AF_INET; |
| if (!checkLenAndCopy(env, ipv4Addr, sizeof(in_addr), &netAddrStruct.sin_addr)) { |
| jniThrowException(env, "java/io/IOException", "Invalid ipv4Addr length"); |
| return; |
| } |
| |
| int ifLen = env->GetStringLength(ifname); |
| // IFNAMSIZ includes the terminating NULL character |
| if (ifLen >= IFNAMSIZ) { |
| jniThrowException(env, "java/io/IOException", "ifname too long"); |
| return; |
| } |
| env->GetStringUTFRegion(ifname, 0, ifLen, req.arp_dev); |
| |
| req.arp_flags = ATF_COM; // Completed entry (ha valid) |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| if (fd < 0) { |
| jniThrowExceptionFmt(env, "java/io/IOException", "Invalid file descriptor"); |
| return; |
| } |
| // See also: man 7 arp |
| if (ioctl(fd, SIOCSARP, &req)) { |
| jniThrowExceptionFmt(env, "java/io/IOException", "ioctl error: %s", strerror(errno)); |
| return; |
| } |
| } |
| |
| static jobject android_net_utils_resNetworkQuery(JNIEnv *env, jobject thiz, jint netId, |
| jstring dname, jint ns_class, jint ns_type, jint flags) { |
| const jsize javaCharsCount = env->GetStringLength(dname); |
| const jsize byteCountUTF8 = env->GetStringUTFLength(dname); |
| |
| // Only allow dname which could be simply formatted to UTF8. |
| // In native layer, res_mkquery would re-format the input char array to packet. |
| std::vector<char> queryname(byteCountUTF8 + 1, 0); |
| |
| env->GetStringUTFRegion(dname, 0, javaCharsCount, queryname.data()); |
| int fd = resNetworkQuery(netId, queryname.data(), ns_class, ns_type, flags); |
| |
| if (fd < 0) { |
| throwErrnoException(env, "resNetworkQuery", -fd); |
| return nullptr; |
| } |
| |
| return jniCreateFileDescriptor(env, fd); |
| } |
| |
| static jobject android_net_utils_resNetworkSend(JNIEnv *env, jobject thiz, jint netId, |
| jbyteArray msg, jint msgLen, jint flags) { |
| uint8_t data[MAXCMDSIZE]; |
| |
| checkLenAndCopy(env, msg, msgLen, data); |
| int fd = resNetworkSend(netId, data, msgLen, flags); |
| |
| if (fd < 0) { |
| throwErrnoException(env, "resNetworkSend", -fd); |
| return nullptr; |
| } |
| |
| return jniCreateFileDescriptor(env, fd); |
| } |
| |
| static jbyteArray android_net_utils_resNetworkResult(JNIEnv *env, jobject thiz, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| int rcode; |
| std::vector<uint8_t> buf(MAXPACKETSIZE, 0); |
| |
| int res = resNetworkResult(fd, &rcode, buf.data(), MAXPACKETSIZE); |
| jniSetFileDescriptorOfFD(env, javaFd, -1); |
| if (res < 0) { |
| throwErrnoException(env, "resNetworkResult", -res); |
| return nullptr; |
| } |
| |
| jbyteArray answer = env->NewByteArray(res); |
| if (answer == nullptr) { |
| throwErrnoException(env, "resNetworkResult", ENOMEM); |
| return nullptr; |
| } else { |
| env->SetByteArrayRegion(answer, 0, res, |
| reinterpret_cast<jbyte*>(buf.data())); |
| } |
| |
| return answer; |
| } |
| |
| static void android_net_utils_resNetworkCancel(JNIEnv *env, jobject thiz, jobject javaFd) { |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| resNetworkCancel(fd); |
| jniSetFileDescriptorOfFD(env, javaFd, -1); |
| } |
| |
| static jobject android_net_utils_getTcpRepairWindow(JNIEnv *env, jobject thiz, jobject javaFd) { |
| if (javaFd == NULL) { |
| jniThrowNullPointerException(env, NULL); |
| return NULL; |
| } |
| |
| int fd = jniGetFDFromFileDescriptor(env, javaFd); |
| struct tcp_repair_window trw = {}; |
| socklen_t size = sizeof(trw); |
| |
| // Obtain the parameters of the TCP repair window. |
| int rc = getsockopt(fd, IPPROTO_TCP, TCP_REPAIR_WINDOW, &trw, &size); |
| if (rc == -1) { |
| throwErrnoException(env, "getsockopt : TCP_REPAIR_WINDOW", errno); |
| return NULL; |
| } |
| |
| struct tcp_info tcpinfo = {}; |
| socklen_t tcpinfo_size = sizeof(tcp_info); |
| |
| // Obtain the window scale from the tcp info structure. This contains a scale factor that |
| // should be applied to the window size. |
| rc = getsockopt(fd, IPPROTO_TCP, TCP_INFO, &tcpinfo, &tcpinfo_size); |
| if (rc == -1) { |
| throwErrnoException(env, "getsockopt : TCP_INFO", errno); |
| return NULL; |
| } |
| |
| jclass class_TcpRepairWindow = env->FindClass("android/net/TcpRepairWindow"); |
| jmethodID ctor = env->GetMethodID(class_TcpRepairWindow, "<init>", "(IIIIII)V"); |
| |
| return env->NewObject(class_TcpRepairWindow, ctor, trw.snd_wl1, trw.snd_wnd, trw.max_window, |
| trw.rcv_wnd, trw.rcv_wup, tcpinfo.tcpi_rcv_wscale); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| /* |
| * JNI registration. |
| */ |
| static const JNINativeMethod gNetworkUtilMethods[] = { |
| /* name, signature, funcPtr */ |
| { "bindProcessToNetwork", "(I)Z", (void*) android_net_utils_bindProcessToNetwork }, |
| { "getBoundNetworkForProcess", "()I", (void*) android_net_utils_getBoundNetworkForProcess }, |
| { "bindProcessToNetworkForHostResolution", "(I)Z", (void*) android_net_utils_bindProcessToNetworkForHostResolution }, |
| { "bindSocketToNetwork", "(II)I", (void*) android_net_utils_bindSocketToNetwork }, |
| { "protectFromVpn", "(I)Z", (void*)android_net_utils_protectFromVpn }, |
| { "queryUserAccess", "(II)Z", (void*)android_net_utils_queryUserAccess }, |
| { "addArpEntry", "([B[BLjava/lang/String;Ljava/io/FileDescriptor;)V", (void*) android_net_utils_addArpEntry }, |
| { "attachDhcpFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_attachDhcpFilter }, |
| { "attachRaFilter", "(Ljava/io/FileDescriptor;I)V", (void*) android_net_utils_attachRaFilter }, |
| { "attachControlPacketFilter", "(Ljava/io/FileDescriptor;I)V", (void*) android_net_utils_attachControlPacketFilter }, |
| { "attachDropAllBPFFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_attachDropAllBPFFilter }, |
| { "detachBPFFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_detachBPFFilter }, |
| { "getTcpRepairWindow", "(Ljava/io/FileDescriptor;)Landroid/net/TcpRepairWindow;", (void*) android_net_utils_getTcpRepairWindow }, |
| { "setupRaSocket", "(Ljava/io/FileDescriptor;I)V", (void*) android_net_utils_setupRaSocket }, |
| { "resNetworkSend", "(I[BII)Ljava/io/FileDescriptor;", (void*) android_net_utils_resNetworkSend }, |
| { "resNetworkQuery", "(ILjava/lang/String;III)Ljava/io/FileDescriptor;", (void*) android_net_utils_resNetworkQuery }, |
| { "resNetworkResult", "(Ljava/io/FileDescriptor;)[B", (void*) android_net_utils_resNetworkResult }, |
| { "resNetworkCancel", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_resNetworkCancel }, |
| }; |
| |
| int register_android_net_NetworkUtils(JNIEnv* env) |
| { |
| return RegisterMethodsOrDie(env, NETUTILS_PKG_NAME, gNetworkUtilMethods, |
| NELEM(gNetworkUtilMethods)); |
| } |
| |
| }; // namespace android |