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      1 /*
      2  * Copyright (C) 2010 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 #ifndef _DNSPROXYLISTENER_H__
     18 #define _DNSPROXYLISTENER_H__
     19 
     20 #include <sysutils/FrameworkListener.h>
     21 
     22 #include "NetdCommand.h"
     23 
     24 class DnsProxyListener : public FrameworkListener {
     25 public:
     26     DnsProxyListener();
     27     virtual ~DnsProxyListener() {}
     28 
     29 private:
     30     class GetAddrInfoCmd : public NetdCommand {
     31     public:
     32         GetAddrInfoCmd();
     33         virtual ~GetAddrInfoCmd() {}
     34         int runCommand(SocketClient *c, int argc, char** argv);
     35     };
     36 
     37     class GetAddrInfoHandler {
     38     public:
     39         // Note: All of host, service, and hints may be NULL
     40         GetAddrInfoHandler(SocketClient *c,
     41                            char* host,
     42                            char* service,
     43                            struct addrinfo* hints,
     44                            char* iface,
     45                            pid_t pid);
     46         ~GetAddrInfoHandler();
     47 
     48         static void* threadStart(void* handler);
     49         void start();
     50 
     51     private:
     52         void run();
     53         SocketClient* mClient;  // ref counted
     54         char* mHost;    // owned
     55         char* mService; // owned
     56         struct addrinfo* mHints;  // owned
     57         char* mIface; // owned
     58         pid_t mPid;
     59     };
     60 
     61     /* ------ gethostbyname ------*/
     62     class GetHostByNameCmd : public NetdCommand {
     63     public:
     64         GetHostByNameCmd();
     65         virtual ~GetHostByNameCmd() {}
     66         int runCommand(SocketClient *c, int argc, char** argv);
     67     };
     68 
     69     class GetHostByNameHandler {
     70     public:
     71         GetHostByNameHandler(SocketClient *c,
     72                             pid_t pid,
     73                             char *iface,
     74                             char *name,
     75                             int af);
     76         ~GetHostByNameHandler();
     77         static void* threadStart(void* handler);
     78         void start();
     79     private:
     80         void run();
     81         SocketClient* mClient; //ref counted
     82         pid_t mPid;
     83         char* mIface; // owned
     84         char* mName; // owned
     85         int mAf;
     86     };
     87 
     88     /* ------ gethostbyaddr ------*/
     89     class GetHostByAddrCmd : public NetdCommand {
     90     public:
     91         GetHostByAddrCmd();
     92         virtual ~GetHostByAddrCmd() {}
     93         int runCommand(SocketClient *c, int argc, char** argv);
     94     };
     95 
     96     class GetHostByAddrHandler {
     97     public:
     98         GetHostByAddrHandler(SocketClient *c,
     99                             void* address,
    100                             int   addressLen,
    101                             int   addressFamily,
    102                             char* iface,
    103                             pid_t pid);
    104         ~GetHostByAddrHandler();
    105 
    106         static void* threadStart(void* handler);
    107         void start();
    108 
    109     private:
    110         void run();
    111         SocketClient* mClient;  // ref counted
    112         void* mAddress;    // address to lookup; owned
    113         int   mAddressLen; // length of address to look up
    114         int   mAddressFamily;  // address family
    115         char* mIface; // owned
    116         pid_t mPid;
    117     };
    118 };
    119 
    120 #endif
    121