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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.net.wifi.p2p.nsd;
     18 
     19 import java.util.ArrayList;
     20 import java.util.List;
     21 import java.util.Locale;
     22 import java.util.UUID;
     23 
     24 /**
     25  * A class for storing Upnp service information that is advertised
     26  * over a Wi-Fi peer-to-peer setup.
     27  *
     28  * {@see android.net.wifi.p2p.WifiP2pManager#addLocalService}
     29  * {@see android.net.wifi.p2p.WifiP2pManager#removeLocalService}
     30  * {@see WifiP2pServiceInfo}
     31  * {@see WifiP2pDnsSdServiceInfo}
     32  */
     33 public class WifiP2pUpnpServiceInfo extends WifiP2pServiceInfo {
     34 
     35     /**
     36      * UPnP version 1.0.
     37      *
     38      * <pre>Query Version should always be set to 0x10 if the query values are
     39      * compatible with UPnP Device Architecture 1.0.
     40      * @hide
     41      */
     42     public static final int VERSION_1_0 = 0x10;
     43 
     44     /**
     45      * This constructor is only used in newInstance().
     46      *
     47      * @param queryList
     48      */
     49     private WifiP2pUpnpServiceInfo(List<String> queryList) {
     50         super(queryList);
     51     }
     52 
     53     /**
     54      * Create UPnP service information object.
     55      *
     56      * @param uuid a string representation of this UUID in the following format,
     57      *  as per <a href="http://www.ietf.org/rfc/rfc4122.txt">RFC 4122</a>.<br>
     58      *  e.g) 6859dede-8574-59ab-9332-123456789012
     59      * @param device a string representation of this device in the following format,
     60      * as per
     61      * <a href="http://www.upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.1.pdf">
     62      *  UPnP Device Architecture1.1</a><br>
     63      *  e.g) urn:schemas-upnp-org:device:MediaServer:1
     64      * @param services a string representation of this service in the following format,
     65      * as per
     66      * <a href="http://www.upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.1.pdf">
     67      *  UPnP Device Architecture1.1</a><br>
     68      *  e.g) urn:schemas-upnp-org:service:ContentDirectory:1
     69      * @return UPnP service information object.
     70      */
     71     public static WifiP2pUpnpServiceInfo newInstance(String uuid,
     72             String device, List<String> services) {
     73         if (uuid == null || device == null) {
     74             throw new IllegalArgumentException("uuid or device cannnot be null");
     75         }
     76         UUID.fromString(uuid);
     77 
     78         ArrayList<String> info = new ArrayList<String>();
     79 
     80         info.add(createSupplicantQuery(uuid, null));
     81         info.add(createSupplicantQuery(uuid, "upnp:rootdevice"));
     82         info.add(createSupplicantQuery(uuid, device));
     83         if (services != null) {
     84             for (String service:services) {
     85                 info.add(createSupplicantQuery(uuid, service));
     86             }
     87         }
     88 
     89         return new WifiP2pUpnpServiceInfo(info);
     90     }
     91 
     92     /**
     93      * Create wpa_supplicant service query for upnp.
     94      *
     95      * @param uuid
     96      * @param data
     97      * @return wpa_supplicant service query for upnp
     98      */
     99     private static String createSupplicantQuery(String uuid, String data) {
    100         StringBuffer sb = new StringBuffer();
    101         sb.append("upnp ");
    102         sb.append(String.format(Locale.US, "%02x ", VERSION_1_0));
    103         sb.append("uuid:");
    104         sb.append(uuid);
    105         if (data != null) {
    106             sb.append("::");
    107             sb.append(data);
    108         }
    109         return sb.toString();
    110     }
    111 }
    112