content: /*
   * Copyright (C) 2012 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.wifi.p2p.nsd;
  
  import android.net.wifi.p2p.WifiP2pDevice;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * A class for a response of upnp service discovery.
   *
   * @hide
   */
  public class WifiP2pUpnpServiceResponse extends WifiP2pServiceResponse {
  
      /**
       * UPnP version. should be {@link WifiP2pUpnpServiceInfo#VERSION_1_0}
       */
      private int mVersion;
  
      /**
       * The list of Unique Service Name.
       * e.g)
       *{"uuid:6859dede-8574-59ab-9332-123456789012",
       *"uuid:6859dede-8574-59ab-9332-123456789012::upnp:rootdevice"}
       */
      private List<String> mUniqueServiceNames;
  
      /**
       * Return UPnP version number.
       *
       * @return version number.
       * @see WifiP2pUpnpServiceInfo#VERSION_1_0
       */
      public int getVersion() {
          return mVersion;
      }
  
      /**
       * Return Unique Service Name strings.
       *
       * @return Unique Service Name.<br>
       * e.g ) <br>
       * <ul>
       * <li>"uuid:6859dede-8574-59ab-9332-123456789012"
       * <li>"uuid:6859dede-8574-59ab-9332-123456789012::upnp:rootdevice"
       * <li>"uuid:6859dede-8574-59ab-9332-123456789012::urn:schemas-upnp-org:device:
       * MediaServer:2"
       * <li>"uuid:6859dede-8574-59ab-9332-123456789012::urn:schemas-upnp-org:service:
       * ContentDirectory:2"
       * </ul>
       */
      public List<String> getUniqueServiceNames() {
          return mUniqueServiceNames;
      }
  
      /**
       * hidden constructor.
       *
       * @param status status code
       * @param transId transaction id
       * @param dev source device
       * @param data UPnP response data.
       */
      protected WifiP2pUpnpServiceResponse(int status,
              int transId, WifiP2pDevice dev, byte[] data) {
          super(WifiP2pServiceInfo.SERVICE_TYPE_UPNP,
                  status, transId, dev, data);
          if (!parse()) {
              throw new IllegalArgumentException("Malformed upnp service response");
          }
      }
  
      /**
       * Parse UPnP service discovery response
       *
       * @return {@code true} if the operation succeeded
       */
      private boolean parse() {
          /*
           * The data format is as follows.
           *
           * ______________________________________________________
           * |  Version (1)  |          USN (Variable)            |
           */
          if (mData == null) {
              // the empty is OK.
              return true;
          }
  
          if (mData.length < 1) {
              return false;
          }
  
          mVersion = mData[0] & 0xff;
          String[] names = new String(mData, 1, mData.length-1).split(",");
          mUniqueServiceNames = new ArrayList<String>();
          for (String name : names) {
              mUniqueServiceNames.add(name);
          }
          return true;
      }
  
      @Override
      public String toString() {
          StringBuffer sbuf = new StringBuffer();
          sbuf.append("serviceType:UPnP(").append(mServiceType).append(")");
          sbuf.append(" status:").append(Status.toString(mStatus));
          sbuf.append(" srcAddr:").append(mDevice.deviceAddress);
          sbuf.append(" version:").append(String.format("%02x", mVersion));
          if (mUniqueServiceNames != null) {
              for (String name : mUniqueServiceNames) {
                  sbuf.append(" usn:").append(name);
              }
          }
          return sbuf.toString();
      }
  
      /**
       * Create upnp service response.
       *
       * <pre>This is only used in{@link WifiP2pServiceResponse}
       *
       * @param status status code.
       * @param transId transaction id.
       * @param device source device.
       * @param data UPnP response data.
       * @return UPnP service response data.
       * @hide
       */
      static WifiP2pUpnpServiceResponse newInstance(int status,
              int transId, WifiP2pDevice device, byte[] data) {
          if (status != WifiP2pServiceResponse.Status.SUCCESS) {
              return new WifiP2pUpnpServiceResponse(status, transId, device, null);
          }
  
          try {
              return new WifiP2pUpnpServiceResponse(status, transId, device, data);
          } catch (IllegalArgumentException e) {
              e.printStackTrace();
          }
          return null;
      }
  }
  