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Commit 10d8a114 authored by Dmitry Dementyev's avatar Dmitry Dementyev
Browse files

Ignore GrantCredentials call with unexpected calling uid. 

Activity can be used only in two cases.
1) Calling uid matches uid grantee.
2) Calling uid is is system. This flow is used by getToken methods with
notifyAuthFailure=true.

Test: Existing CTS tests
Bug: 158480899
Change-Id: I1421c333b6cebb4f7cddcdd8766298f6872e933b
parent 1d3492e1

core/java/android/accounts/GrantCredentialsPermissionActivity.java

+28 −6
Original line number Diff line number Diff line
@@ -16,16 +16,23 @@ 
package android.accounts;



import android.app.Activity;

import android.content.res.Resources;

import android.os.Bundle;

import android.widget.TextView;

import android.widget.LinearLayout;

import android.view.View;

import android.view.LayoutInflater;

import android.app.ActivityTaskManager;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.res.Resources;

import android.os.Bundle;

import android.os.IBinder;

import android.os.Process;

import android.os.RemoteException;

import android.os.UserHandle;

import android.text.TextUtils;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.LinearLayout;

import android.widget.TextView;



import com.android.internal.R;



import java.io.IOException;
@@ -42,6 +49,7 @@ public class GrantCredentialsPermissionActivity extends Activity implements View 
    private Account mAccount;

    private String mAuthTokenType;

    private int mUid;

    private int mCallingUid;

    private Bundle mResultBundle = null;

    protected LayoutInflater mInflater;
@@ -74,6 +82,20 @@ public class GrantCredentialsPermissionActivity extends Activity implements View 
            return;

        }



        try {

            IBinder activityToken = getActivityToken();

            mCallingUid = ActivityTaskManager.getService().getLaunchedFromUid(activityToken);

        } catch (RemoteException re) {

            // Couldn't figure out caller details

            Log.w(getClass().getSimpleName(), "Unable to get caller identity \n" + re);

        }



        if (!UserHandle.isSameApp(mCallingUid, Process.SYSTEM_UID) && mCallingUid != mUid) {

            setResult(Activity.RESULT_CANCELED);

            finish();

            return;

        }



        String accountTypeLabel;

        try {

            accountTypeLabel = getAccountLabel(mAccount);