| /* |
| * Copyright (C) 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. |
| */ |
| |
| package android.net; |
| |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| |
| import com.google.android.collect.Sets; |
| |
| import java.util.HashSet; |
| |
| /** |
| * Configuration details for a network interface. |
| * |
| * @hide |
| */ |
| public class InterfaceConfiguration implements Parcelable { |
| private String mHwAddr; |
| private LinkAddress mAddr; |
| private HashSet<String> mFlags = Sets.newHashSet(); |
| |
| private static final String FLAG_UP = "up"; |
| private static final String FLAG_DOWN = "down"; |
| |
| @Override |
| public String toString() { |
| final StringBuilder builder = new StringBuilder(); |
| builder.append("mHwAddr=").append(mHwAddr); |
| builder.append(" mAddr=").append(String.valueOf(mAddr)); |
| builder.append(" mFlags=").append(getFlags()); |
| return builder.toString(); |
| } |
| |
| public Iterable<String> getFlags() { |
| return mFlags; |
| } |
| |
| public boolean hasFlag(String flag) { |
| validateFlag(flag); |
| return mFlags.contains(flag); |
| } |
| |
| public void clearFlag(String flag) { |
| validateFlag(flag); |
| mFlags.remove(flag); |
| } |
| |
| public void setFlag(String flag) { |
| validateFlag(flag); |
| mFlags.add(flag); |
| } |
| |
| /** |
| * Set flags to mark interface as up. |
| */ |
| public void setInterfaceUp() { |
| mFlags.remove(FLAG_DOWN); |
| mFlags.add(FLAG_UP); |
| } |
| |
| /** |
| * Set flags to mark interface as down. |
| */ |
| public void setInterfaceDown() { |
| mFlags.remove(FLAG_UP); |
| mFlags.add(FLAG_DOWN); |
| } |
| |
| /** |
| * Set flags so that no changes will be made to the up/down status. |
| */ |
| public void ignoreInterfaceUpDownStatus() { |
| mFlags.remove(FLAG_UP); |
| mFlags.remove(FLAG_DOWN); |
| } |
| |
| public LinkAddress getLinkAddress() { |
| return mAddr; |
| } |
| |
| public void setLinkAddress(LinkAddress addr) { |
| mAddr = addr; |
| } |
| |
| public String getHardwareAddress() { |
| return mHwAddr; |
| } |
| |
| public void setHardwareAddress(String hwAddr) { |
| mHwAddr = hwAddr; |
| } |
| |
| /** |
| * This function determines if the interface is up and has a valid IP |
| * configuration (IP address has a non zero octet). |
| * |
| * Note: It is supposed to be quick and hence should not initiate |
| * any network activity |
| */ |
| public boolean isActive() { |
| try { |
| if (isUp()) { |
| for (byte b : mAddr.getAddress().getAddress()) { |
| if (b != 0) return true; |
| } |
| } |
| } catch (NullPointerException e) { |
| return false; |
| } |
| return false; |
| } |
| |
| public boolean isUp() { |
| return hasFlag(FLAG_UP); |
| } |
| |
| /** {@inheritDoc} */ |
| public int describeContents() { |
| return 0; |
| } |
| |
| /** {@inheritDoc} */ |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeString(mHwAddr); |
| if (mAddr != null) { |
| dest.writeByte((byte)1); |
| dest.writeParcelable(mAddr, flags); |
| } else { |
| dest.writeByte((byte)0); |
| } |
| dest.writeInt(mFlags.size()); |
| for (String flag : mFlags) { |
| dest.writeString(flag); |
| } |
| } |
| |
| public static final Creator<InterfaceConfiguration> CREATOR = new Creator< |
| InterfaceConfiguration>() { |
| public InterfaceConfiguration createFromParcel(Parcel in) { |
| InterfaceConfiguration info = new InterfaceConfiguration(); |
| info.mHwAddr = in.readString(); |
| if (in.readByte() == 1) { |
| info.mAddr = in.readParcelable(null); |
| } |
| final int size = in.readInt(); |
| for (int i = 0; i < size; i++) { |
| info.mFlags.add(in.readString()); |
| } |
| return info; |
| } |
| |
| public InterfaceConfiguration[] newArray(int size) { |
| return new InterfaceConfiguration[size]; |
| } |
| }; |
| |
| private static void validateFlag(String flag) { |
| if (flag.indexOf(' ') >= 0) { |
| throw new IllegalArgumentException("flag contains space: " + flag); |
| } |
| } |
| } |