Android8.0 CtsVerifier Wifi Direct Test
在测试8.0 CtsVerifier Wifi Direct Test时，总会测试失败，出现“ the target responder device was not found”的error
CTS的各版本的相关组件，及apk下载路径如下：
https://source.android.com/compatibility/cts/downloads
（ps: 以上链接需要翻墙网才可以打开）
测试办法：
Wifi Direct Test->Go Negotiation Requester/Service Discovery Requester Test->failed
正确的做法如下：
Settings –> Location –> Location status –> Use Wi-Fi estimate location
出现了”No location access”,有两个选项“CLOSE”、“TRUN ON LOCATION”–>
测试时，要注意：
点击“TRUN ON LOCATION”即可，看到Use Wi-Fi estimate location还是为OFF状态，没关系，不用关注，直接退出，再去启动ctsVerifier.apk，再去测试即可pass
点击”CLOSE”的话，会去设置数据库为0，所以，点击这个是不成功的，测试也会failed
以下是这个测试整个debug过程
In Android8.0, using CtsVerifier.apk of Android 8.0, it version is 26.
when test Go Negotiation Requester Test-> failed.
And I try test CtsVerifier.apk of Android 6.0, it's version is 23. it is test pass。
In android 8.0，using CtsVerifier.apk of Android 8.0. wifi direct test--> Go Negotiation Test
So, I find the root cause, the analysis is as follows:
1)
CtsVerifier.apk -> RequesterTestActivity.java
private void searchTarget() {
。。。。。。。
mTimer.schedule(new TimerTask() {
@Override
public void run() {
mP2pMgr.requestPeers(mChannel, new PeerListListener() {
@Override
public void onPeersAvailable(WifiP2pDeviceList _peers) {
final WifiP2pDeviceList peers = _peers;
/*
* Need to show dialog in GUI thread.
*/
mHandler.post(new Runnable() {
@Override
public void run() {
mProgress.setVisibility(ProgressBar.INVISIBLE);
// get list is null, so it test failed, show " the target responder device was not found"
if (peers.getDeviceList().size() == 0) {
mTextView.setText(
R.string.p2p_target_not_found_error);
} else {
showSelectTargetDialog(peers);
}
}
});
}
});
。。。。。
}
2)
in WifiP2pServiceImpl.java --> recivce REQUEST_PEERS
--> getPeers((Bundle) message.obj, message.sendingUid))
private WifiP2pDeviceList getPeers(Bundle pkg, int uid) {
........
scanPermission = wifiPermissionsUtil.canAccessScanResults(pkgName, uid, Build.VERSION_CODES.O);
.................
// but this scanPermission is false, mPeers can not set.
// So CtsVerifier.apk get peers is null，it's size is 0, last it is test failed...
if (scanPermission) {
return new WifiP2pDeviceList(mPeers);
} else {
return new WifiP2pDeviceList();
}
.......
}
3)
In canAccessScanResults() of WifiPermissionsUtil.java
public boolean canAccessScanResults(String pkgName, int uid,
int minVersion) throws SecurityException {
mAppOps.checkPackage(uid, pkgName);
// Check if the calling Uid has CAN_READ_PEER_MAC_ADDRESS
// permission or is an Active Nw scorer.
boolean canCallingUidAccessLocation = checkCallerHasPeersMacAddressPermission(uid)
|| isCallerActiveNwScorer(uid);
// LocationAccess by App: For AppVersion older than minVersion,
// it is sufficient to check if the App is foreground.
// Otherwise, Location Mode must be enabled and caller must have
// Coarse Location permission to have access to location information.
boolean canAppPackageUseLocation = isLegacyForeground(pkgName, minVersion)
|| (isLocationModeEnabled(pkgName)
&& checkCallersLocationPermission(pkgName, uid));
// If neither caller or app has location access, there is no need to check
// any other permissions. Deny access to scan results.
// pkgName=com.android.cts.verifier
mLog.tC("icecream Denied: pkgName="+pkgName);
// uid=10063, minVersion=26
mLog.tC("icecream Denied: uid="+uid+", minVersion="+minVersion); // false
mLog.tC("icecream Denied: checkCallerHasPeersMacAddressPermission(uid)="
+checkCallerHasPeersMacAddressPermission(uid)); // false
mLog.tC("icecream Denied: isCallerActiveNwScorer(uid)="
+isCallerActiveNwScorer(uid)); // false
mLog.tC("icecream Denied: canCallingUidAccessLocation="
+canCallingUidAccessLocation); // false
mLog.tC("icecream Denied: isLegacyForeground(pkgName, minVersion)="
+isLegacyForeground(pkgName, minVersion)); //false
mLog.tC("icecream Denied: isLocationModeEnabled(pkgName)="
+isLocationModeEnabled(pkgName)); // false
mLog.tC("icecream Denied: checkCallersLocationPermission(pkgName, uid)="
+checkCallersLocationPermission(pkgName, uid)); // true
mLog.tC("icecream Denied: canAppPackageUseLocation="
+canAppPackageUseLocation); // false
if (!canCallingUidAccessLocation && !canAppPackageUseLocation) {
mLog.tC("icecream Denied: no location permission");
// here, it will return, so scanPermission had set false.
return false;
}
.......
}
4) I use CtsVerifier.apk of Android 6.0, it can test pass,
but the CtsVerifier.apk of Android 8.0 is test failed.
5) I check the isLegacyForeground(), it is
private boolean isLegacyForeground(String pkgName, int version) {
return isLegacyVersion(pkgName, version) && isForegroundApp(pkgName);
}
I add some log，
isLegacyVersion(pkgName, version) is false
isForegroundApp(pkgName) is true.
6) isLegacyVersion
private boolean isLegacyVersion(String pkgName, int minVersion) {
mLog.tC("icecream isLegacyVersion---------------- pkgName="+pkgName+",
minVersion="+minVersion);
try {
mLog.tC("icecream isLegacyVersion
mContext.getPackageManager().getApplicationInfo(pkgName, 0).targetSdkVersion=
"+mContext.getPackageManager().getApplicationInfo(pkgName, 0).targetSdkVersion);
// targetSdkVersion is 26, and minVersion is 26,
// so it return false. and then test failed,
// So this is root case for CtsVerifier.apk of Android 6.0 test pass,
// but Android 8.0 test failed
if (mContext.getPackageManager().getApplicationInfo(pkgName, 0)
.targetSdkVersion < minVersion) {
return true;
}
} catch (PackageManager.NameNotFoundException e) {
// In case of exception, assume known app (more strict checking)
// Note: This case will never happen since checkPackage is
// called to verify valididity before checking App's version.
}
return false;
}
7） isLocationModeEnabled(pkgName)
this function will get database, Settings.Secure.LOCATION_MODE,
and it's default is Settings.Secure.LOCATION_MODE_OFF,
So if it is Settings.Secure.LOCATION_MODE_ON， this test will pass.由以上可以看出，这个测试要pass，满足以下三个条件其中之一就可以了
1） 测试的CtsVerifier.apk版本低于android 8.0，即targetSdkVersion要小于26
2） 测试的CtsVerifier.apk要有android.permission.PEERS_MAC_ADDRESS权限才可以
3） 所测试的平台，要把Settings.Secure.LOCATION_MODE打开，让其设置成Settings.Secure.LOCATION_MODE_ON，而这个可以通过Settings去设置。
办法如下：
Settings –> Location –> Location status –> Use Wi-Fi estimate location
出现了”No location access”,有两个选项“CLOSE”、“TRUN ON LOCATION”测试时，要注意：
点击“TRUN ON LOCATION”即可，看到Use Wi-Fi estimate location还是为OFF状态，没关系，不用关注，直接退出，再去启动ctsVerifier.apk，再去测试即可
点击”CLOSE”的话，会去设置数据库为0，所以，点击这个是不成功的，测试也会failed