diff options
Diffstat (limited to 'common/device/com/android/net/module/util/netlink/StructInetDiagSockId.java')
| -rw-r--r-- | common/device/com/android/net/module/util/netlink/StructInetDiagSockId.java | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/common/device/com/android/net/module/util/netlink/StructInetDiagSockId.java b/common/device/com/android/net/module/util/netlink/StructInetDiagSockId.java deleted file mode 100644 index dd85934c..00000000 --- a/common/device/com/android/net/module/util/netlink/StructInetDiagSockId.java +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Copyright (C) 2018 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. - */ - -package com.android.net.module.util.netlink; - -import static android.system.OsConstants.AF_INET; -import static android.system.OsConstants.AF_INET6; - -import static com.android.net.module.util.NetworkStackConstants.IPV4_ADDR_LEN; -import static com.android.net.module.util.NetworkStackConstants.IPV6_ADDR_LEN; - -import static java.nio.ByteOrder.BIG_ENDIAN; - -import android.util.Log; - -import androidx.annotation.Nullable; - -import java.net.Inet4Address; -import java.net.Inet6Address; -import java.net.InetAddress; -import java.net.InetSocketAddress; -import java.net.UnknownHostException; -import java.nio.ByteBuffer; -import java.nio.ByteOrder; - -/** - * struct inet_diag_req_v2 - * - * see <linux_src>/include/uapi/linux/inet_diag.h - * - * struct inet_diag_sockid { - * __be16 idiag_sport; - * __be16 idiag_dport; - * __be32 idiag_src[4]; - * __be32 idiag_dst[4]; - * __u32 idiag_if; - * __u32 idiag_cookie[2]; - * #define INET_DIAG_NOCOOKIE (~0U) - * }; - * - * @hide - */ -public class StructInetDiagSockId { - private static final String TAG = StructInetDiagSockId.class.getSimpleName(); - public static final int STRUCT_SIZE = 48; - - private static final long INET_DIAG_NOCOOKIE = ~0L; - private static final byte[] IPV4_PADDING = new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; - - public final InetSocketAddress locSocketAddress; - public final InetSocketAddress remSocketAddress; - public final int ifIndex; - public final long cookie; - - public StructInetDiagSockId(InetSocketAddress loc, InetSocketAddress rem) { - this(loc, rem, 0 /* ifIndex */, INET_DIAG_NOCOOKIE); - } - - public StructInetDiagSockId(InetSocketAddress loc, InetSocketAddress rem, - int ifIndex, long cookie) { - this.locSocketAddress = loc; - this.remSocketAddress = rem; - this.ifIndex = ifIndex; - this.cookie = cookie; - } - - /** - * Parse inet diag socket id from buffer. - */ - @Nullable - public static StructInetDiagSockId parse(final ByteBuffer byteBuffer, final short family) { - if (byteBuffer.remaining() < STRUCT_SIZE) { - return null; - } - - byteBuffer.order(BIG_ENDIAN); - final int srcPort = Short.toUnsignedInt(byteBuffer.getShort()); - final int dstPort = Short.toUnsignedInt(byteBuffer.getShort()); - - final InetAddress srcAddr; - final InetAddress dstAddr; - if (family == AF_INET) { - final byte[] srcAddrByte = new byte[IPV4_ADDR_LEN]; - final byte[] dstAddrByte = new byte[IPV4_ADDR_LEN]; - byteBuffer.get(srcAddrByte); - // Address always uses IPV6_ADDR_LEN in the buffer. So if the address is IPv4, position - // needs to be advanced to the next field. - byteBuffer.position(byteBuffer.position() + (IPV6_ADDR_LEN - IPV4_ADDR_LEN)); - byteBuffer.get(dstAddrByte); - byteBuffer.position(byteBuffer.position() + (IPV6_ADDR_LEN - IPV4_ADDR_LEN)); - try { - srcAddr = Inet4Address.getByAddress(srcAddrByte); - dstAddr = Inet4Address.getByAddress(dstAddrByte); - } catch (UnknownHostException e) { - Log.wtf(TAG, "Failed to parse address: " + e); - return null; - } - } else if (family == AF_INET6) { - final byte[] srcAddrByte = new byte[IPV6_ADDR_LEN]; - final byte[] dstAddrByte = new byte[IPV6_ADDR_LEN]; - byteBuffer.get(srcAddrByte); - byteBuffer.get(dstAddrByte); - try { - // Using Inet6Address.getByAddress to be consistent with idiag_family field since - // InetAddress.getByAddress returns Inet4Address if the address is v4-mapped v6 - // address. - srcAddr = Inet6Address.getByAddress( - null /* host */, srcAddrByte, -1 /* scope_id */); - dstAddr = Inet6Address.getByAddress( - null /* host */, dstAddrByte, -1 /* scope_id */); - } catch (UnknownHostException e) { - Log.wtf(TAG, "Failed to parse address: " + e); - return null; - } - } else { - Log.wtf(TAG, "Invalid address family: " + family); - return null; - } - - final InetSocketAddress srcSocketAddr = new InetSocketAddress(srcAddr, srcPort); - final InetSocketAddress dstSocketAddr = new InetSocketAddress(dstAddr, dstPort); - - byteBuffer.order(ByteOrder.nativeOrder()); - final int ifIndex = byteBuffer.getInt(); - final long cookie = byteBuffer.getLong(); - return new StructInetDiagSockId(srcSocketAddr, dstSocketAddr, ifIndex, cookie); - } - - /** - * Write inet diag socket id message to ByteBuffer in big endian. - */ - public void pack(ByteBuffer byteBuffer) { - byteBuffer.order(BIG_ENDIAN); - byteBuffer.putShort((short) locSocketAddress.getPort()); - byteBuffer.putShort((short) remSocketAddress.getPort()); - byteBuffer.put(locSocketAddress.getAddress().getAddress()); - if (locSocketAddress.getAddress() instanceof Inet4Address) { - byteBuffer.put(IPV4_PADDING); - } - byteBuffer.put(remSocketAddress.getAddress().getAddress()); - if (remSocketAddress.getAddress() instanceof Inet4Address) { - byteBuffer.put(IPV4_PADDING); - } - byteBuffer.order(ByteOrder.nativeOrder()); - byteBuffer.putInt(ifIndex); - byteBuffer.putLong(cookie); - } - - @Override - public String toString() { - return "StructInetDiagSockId{ " - + "idiag_sport{" + locSocketAddress.getPort() + "}, " - + "idiag_dport{" + remSocketAddress.getPort() + "}, " - + "idiag_src{" + locSocketAddress.getAddress().getHostAddress() + "}, " - + "idiag_dst{" + remSocketAddress.getAddress().getHostAddress() + "}, " - + "idiag_if{" + ifIndex + "}, " - + "idiag_cookie{" - + (cookie == INET_DIAG_NOCOOKIE ? "INET_DIAG_NOCOOKIE" : cookie) + "}" - + "}"; - } -} |