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Merge "Allow 2-pane deep link to access unexported Activity"

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This commit is contained in:
Arc Wang
2022-12-14 05:52:15 +00:00
committed by Android (Google) Code Review
parent a3cb36777b 1a49146508
commit aef9355579
1 changed files with 53 additions and 12 deletions
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47
src/com/android/settings/homepage/SettingsHomepageActivity.java
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@@ -32,6 +32,8 @@ import android.content.pm.PackageManager;
import android.content.pm.UserInfo;
import android.content.res.Configuration;
import android.os.Bundle;
import android.os.Process;
import android.os.RemoteException;
import android.os.UserHandle;
import android.os.UserManager;
import android.text.TextUtils;
@@ -466,8 +468,6 @@ public class SettingsHomepageActivity extends FragmentActivity implements
return;
}
if (!TextUtils.equals(PasswordUtils.getCallingAppPackageName(getActivityToken()),
getPackageName())) {
ActivityInfo targetActivityInfo = null;
try {
targetActivityInfo = getPackageManager().getActivityInfo(targetComponentName,
@@ -478,8 +478,9 @@ public class SettingsHomepageActivity extends FragmentActivity implements
return;
}
if (!hasPrivilegedAccess(targetActivityInfo)) {
if (!targetActivityInfo.exported) {
Log.e(TAG, "Must not launch an unexported Actvity for deep link");
Log.e(TAG, "Target Activity is not exported");
finish();
return;
}
@@ -529,6 +530,46 @@ public class SettingsHomepageActivity extends FragmentActivity implements
}
}
// Check if calling app has privileged access to launch Activity of activityInfo.
private boolean hasPrivilegedAccess(ActivityInfo activityInfo) {
if (TextUtils.equals(PasswordUtils.getCallingAppPackageName(getActivityToken()),
getPackageName())) {
return true;
}
int callingUid = -1;
try {
callingUid = ActivityManager.getService().getLaunchedFromUid(getActivityToken());
} catch (RemoteException re) {
Log.e(TAG, "Not able to get callingUid: " + re);
return false;
}
int targetUid = -1;
try {
targetUid = getPackageManager().getApplicationInfo(activityInfo.packageName,
/* flags= */ 0).uid;
} catch (PackageManager.NameNotFoundException nnfe) {
Log.e(TAG, "Not able to get targetUid: " + nnfe);
return false;
}
// When activityInfo.exported is false, Activity still can be launched if applications have
// the same user ID.
if (UserHandle.isSameApp(callingUid, targetUid)) {
return true;
}
// When activityInfo.exported is false, Activity still can be launched if calling app has
// root or system privilege.
int callingAppId = UserHandle.getAppId(callingUid);
if (callingAppId == Process.ROOT_UID || callingAppId == Process.SYSTEM_UID) {
return true;
}
return false;
}
@VisibleForTesting
boolean isCallingAppPermitted(String permission) {
return TextUtils.isEmpty(permission) || PasswordUtils.isCallingAppPermitted(