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      1 /*
      2  * Copyright (C) 2016 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;
     18 
     19 /** {@hide} */
     20 oneway interface INetdEventCallback {
     21 
     22     // Possible addNetdEventCallback callers.
     23     const int CALLBACK_CALLER_CONNECTIVITY_SERVICE = 0;
     24     const int CALLBACK_CALLER_DEVICE_POLICY = 1;
     25     const int CALLBACK_CALLER_NETWORK_WATCHLIST = 2;
     26 
     27     /**
     28      * Reports a single DNS lookup function call.
     29      * This method must not block or perform long-running operations.
     30      *
     31      * @param netId the ID of the network the lookup was performed on.
     32      * @param eventType one of the EVENT_* constants in {@link INetdEventListener}.
     33      * @param returnCode the return value of the query, may vary based on {@code eventType}. See
     34      *        {@code getaddrinfo()}, {@code gethostbyaddr()} and {@code gethostbyname()} section in
     35      *        bionic/libc/include/netdb.h.
     36      * @param hostname the name that was looked up.
     37      * @param ipAddresses (possibly a subset of) the IP addresses returned.
     38      *        At most {@link #DNS_REPORTED_IP_ADDRESSES_LIMIT} addresses are logged.
     39      * @param ipAddressesCount the number of IP addresses returned. May be different from the length
     40      *        of ipAddresses if there were too many addresses to log.
     41      * @param timestamp the timestamp at which the query was reported by netd.
     42      * @param uid the UID of the application that performed the query.
     43      */
     44     void onDnsEvent(int netId, int eventType, int returnCode, String hostname,
     45             in String[] ipAddresses, int ipAddressesCount, long timestamp, int uid);
     46 
     47     /**
     48      * Represents adding or removing a NAT64 prefix.
     49      * This method must not block or perform long-running operations.
     50      *
     51      * @param netId the ID of the network the prefix was performed on.
     52      * @param added true if the NAT64 prefix was added, or false if the NAT64 prefix was removed.
     53      *        There is only one prefix at a time for each netId. If a prefix is added, it replaces
     54      *        the previous-added prefix.
     55      * @param prefixString the detected NAT64 prefix as a string literal.
     56      * @param prefixLength the prefix length associated with this NAT64 prefix.
     57      */
     58     void onNat64PrefixEvent(int netId, boolean added, @utf8InCpp String prefixString,
     59             int prefixLength);
     60 
     61     /**
     62      * Represents a private DNS validation success or failure.
     63      * This method must not block or perform long-running operations.
     64      *
     65      * @param netId the ID of the network the validation was performed on.
     66      * @param ipAddress the IP address for which validation was performed.
     67      * @param hostname the hostname for which validation was performed.
     68      * @param validated whether or not validation was successful.
     69      */
     70     void onPrivateDnsValidationEvent(int netId, String ipAddress, String hostname,
     71             boolean validated);
     72 
     73     /**
     74      * Reports a single connect library call.
     75      * This method must not block or perform long-running operations.
     76      *
     77      * @param ipAddr destination IP address.
     78      * @param port destination port number.
     79      * @param timestamp the timestamp at which the call was reported by netd.
     80      * @param uid the UID of the application that performed the connection.
     81      */
     82     void onConnectEvent(String ipAddr, int port, long timestamp, int uid);
     83 }
     84