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分类: Android平台

2013-01-15 19:59:30

快牙是一款基于WIFi热点的快速传文件的程序(基于Android版本)。首先是通过把其中的一个手机设置成Wifi hotspot,别的手机通过wifi查找wifi hotspot来确认。

1、  搜索过滤

这个通过快牙运行前设置用户名,搜索过滤时,快牙只找出用快牙启动的热点。别的WIfi热点都找不出来。想反编译快牙,NND的,还混淆了。

 

打开Wifi热点,快牙把WIFI  SSID已经修改了,通过把用户名sha一下,得出字串。搜索出来的再返向一下,前面再加上关键字如D511,就是用户名,这样就可以过滤。思路基本上是这样的。

 

2、  WIfi热点的打开

这个主要是通过WifiManager中的HideAPI来实现。在google搜索也有讲到的,主要就是用到setWifiApEnabled这个Hide的函数。

我们就可以通过反射的方法。我把这个写成了一个class.

 

    public static class WifiApManager {

 

        public static final int WIFI_AP_STATE_FAILED= 4;

 

        private final WifiManager mWifiManager;

 

        public WifiApManager(Context context) {

            mWifiManager = (WifiManager) context

                    .getSystemService(Context.WIFI_SERVICE);

        }

 

        public booleansetWifiApEnabled(WifiConfiguration config,

                boolean enabled) {

 

            try {

                if (enabled) { // disable WiFi in any case

                    mWifiManager.setWifiEnabled(false);

                }

 

                Method method = mWifiManager.getClass().getMethod(

                        "setWifiApEnabled", WifiConfiguration.class,

                        boolean.class);

                return (Boolean) method.invoke(mWifiManager, config, enabled);

            } catch(Exception e) {

                e.printStackTrace();

                return false;

            }

        }

 

        public int getWifiApState() {

            try {

                Method method = mWifiManager.getClass().getMethod(

                        "getWifiApState");

                return (Integer) method.invoke(mWifiManager);

            } catch(Exception e) {

                e.printStackTrace();

                return WIFI_AP_STATE_FAILED;

            }

        }

       

        public WifiConfiguration getWifiApConfiguration() {

            try {

                Method method = mWifiManager.getClass().getMethod(

                        "getWifiApConfiguration");

                return (WifiConfiguration) method.invoke(mWifiManager);

            } catch(Exception e) {

                e.printStackTrace();

                return null;

            }

        }

       

        public booleansetWifiApConfiguration(WifiConfiguration config) {

            try {

                Method method = mWifiManager.getClass().getMethod(

                        "setWifiApConfiguration",WifiConfiguration.class);

                return (Boolean) method.invoke(mWifiManager, config);

            } catch(Exception e) {

                e.printStackTrace();

                return false;

            }

        }

        public intsetWifiApConfig(WifiConfiguration config) {

            try {

                Method method = mWifiManager.getClass().getMethod(

                        "setWifiApConfig",WifiConfiguration.class);

                return (Integer) method.invoke(mWifiManager, config);

            } catch(Exception e) {

                e.printStackTrace();

                return WIFI_AP_STATE_FAILED;

            }

        }

}

 

这个函数与方法就可以在android 的源代码中打开WifiManager.java中找到,通过设置wificonfiguration就可以了。网上也有些sample,基本原理都是这样实现的。还可以listen这个hotspot的消息,实现一些功能。

 

但这些方法都只能在非HTCphone中实现,在htc phone中,只能启动hotspot,但不能修改SSID等参数。但WLAN 热点设置是可以修改这些参数的。

 

3、  解决方法

HTC喜欢自己增加个api什么的是常有事,我就把HTC 手机wifimanager下的所有函数都反射出来看一下,试一下。于是

Method[] classMethods = null;

                try {

                    classMethods = wifi.getClass().getDeclaredMethods();

                } catch(SecurityException e) {

                    Log.w(TAG, "getDeclaredMethods failed");

                }      

                for (int i = 0;i < classMethods.length; i++)

                {

                    Log.i(TAG, "found api: "+ classMethods[i].getName());

                    if(classMethods[i].getName().equalsIgnoreCase("setWifiApConfig")){

                        Type[] typeParam = classMethods[i].getGenericParameterTypes();

                        for(Type t:typeParam){

                            Log.w(TAG, "getGenericParameterTypes:" +t.toString());

                        }

                    }

                }      

 

found api: NotifyWifiPhoneCallComeIn

 found api: NotifyWifiPhoneCallEnd

 found api: acquirePowerActiveReq

 found api: addNetwork

 found api: addToBlacklist

 found api: asyncConnect

 found api: cancelWps

 found api: clearBlacklist

 found api: connectNetwork

 found api: connectNetwork

 found api: createMulticastLock

 found api: createWifiLock

 found api: createWifiLock

 found api: disableNetwork

 found api: disableSsdpPacket

 found api: disconnect

 found api: enableAutoIP

 found api: enableNetwork

 found api: enablePowerActiveForFotaDownload

 found api: enablePowerActiveMode

 found api: enableSsdpPacket

 found api: forgetNetwork

 found api: getAssocListStr

 found api: getClientInfo

 found api: getConfigFile

 found api: getConfiguredNetworks

 found api: getConnectionInfo

 found api: getConnectionPolicyEnabled

 found api: getDhcpInfo

 found api: getDockWifiApAutoEnabled

 found api: getDockWifiAutoEnabled

 found api: getFrequencyBand

 found api: getHotspotNumAllowedChannels

 found api: getMessenger

 found api: getMostPreferredNetwork

 found api: getRequestedList

 found api: getScanResults

 found api: getSmartWifiState

 found api: getWagAddress

 found api: getWagAsUserDefined

 found api: getWifiApConfiguration

 found api: getWifiApState

 found api: getWifiOffloadEnabled

 found api: getWifiState

 found api: initializeMulticastFiltering

 found api: isDualBandSupported

 found api: isMulticastEnabled

 found api: isWifiApEnabled

 found api: isWifiEnabled

 found api: isWifiPowerModeNormal

 found api: isWlanMacValid

 found api: pingSupplicant

 found api: reassociate

 found api: reconnect

 found api: releasePowerActiveReq

 found api: removeNetwork

 found api: resetDhcpConfig

 found api: saveConfiguration

 found api: saveNetwork

 found api: setConnectionPolicyEnabled

 found api: setCountryCode

 found api: setDockWifiApAutoEnabled

 found api: setDockWifiAutoEnabled

 found api: setFrequencyBand

 found api: setHotspotAutoChannel

 found api: setMostPreferredNetwork

 found api: setWagAddress

 found api: setWagAsUserDefined

 found api: setWifiApConfig

 getGenericParameterTypes:class android.net.wifi.WifiConfiguration

 found api: setWifiApConfiguration

 found api: setWifiApEnabled

 found api: setWifiApMacList

 found api: setWifiEnabled

 found api: setWifiEnabledPersist

 found api: setWifiOffloadEnabled

 found api: setWifiPowerSavingMode

 found api: setWpsPbcMode

 found api: setWpsPinMode

 found api: setWpsRegMode

 found api: startScan

 found api: startScanActive

 found api: startWifi

 found api: startWps

 found api: stopWifi

 found api: stopWps

 found api: updateNetwork

 found api: access$000

 found api: access$008

 found api: access$010

 found api: addOrUpdateNetwork

 found api: calculateSignalLevel

 found api: calculateSignalLevel

         found api: compareSignalLevel

 

API的名字来看,只有setWifiApConfig这个,是不是在调用之前,或之后要用HTC专利的API呢?参数得到也是WifiConfiguration,用代码试试看,失败。跟我猜想的不一样。继续试别的api都不行。

 

继续在网上搜,基本上都是问的,没有答案。而且快牙能做,我肯定能做。

是不是wificonfiguration中有变化呢?对于google源码中的wificonfiguration.java中已看过了。已经调试时看

WIFI热点设置,htc setWifiApEnabled Wificonfiguration


有一个mWifiApProfile,类型是HotspotProfile,搜一下,全是微软的,类型也不正确,还是自己再研究吧

设置成mWifiApProfile会不会行呢,试试看

mnetConfig = new Wificonfiguration();

….

Field localField1;

                try {

                    localField1 = WifiConfiguration.class.getDeclaredField("mWifiApProfile");

                    localField1.setAccessible(true);

                    Object localObject2 = localField1.get(mnetConfig);

                    localField1.setAccessible(false);

                   

                    if(localObject2!=null){

                        Field localField5 = localObject2.getClass().getDeclaredField("SSID");

                        localField5.setAccessible(true);

                        localField5.set(localObject2, netConfig.SSID);

                        localField5.setAccessible(false);

                       

                        Field localField4 = localObject2.getClass().getDeclaredField("BSSID");

                        localField4.setAccessible(true);

                        localField4.set(localObject2, netConfig.BSSID);

                        localField4.setAccessible(false);


                        Field localField6 = localObject2.getClass().getDeclaredField("dhcpEnable"); 

                        localField6.setAccessible(true); 

                        localField6.setInt(localObject2, 1);  

                        localField6.setAccessible(false);

                    }

                } catch(Exception e) {

                    e.printStackTrace();

                }

 

再去调用setWifiApEnabled,现在就可以成功了。

 

这样我们就可以通过SSID来过滤特定的WIfi热点,这样不是我们程序启动的,就不要处理,提高软件smart性,还是很有好处的。

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