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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.providers.contacts.util;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Binder;
import android.os.Process;
import android.util.Log;
public class ContactsPermissions {
private static final String TAG = "ContactsPermissions";
private static final boolean DEBUG = false; // DO NOT submit with true
// Normally, we allow calls from self, *except* in unit tests, where we clear this flag
// to emulate calls from other apps.
public static boolean ALLOW_SELF_CALL = true;
private ContactsPermissions() {
}
public static boolean hasCallerOrSelfPermission(Context context, String permission) {
boolean ok = false;
if (ALLOW_SELF_CALL && Binder.getCallingPid() == Process.myPid()) {
ok = true; // Called by self; always allow.
} else {
ok = context.checkCallingOrSelfPermission(permission)
== PackageManager.PERMISSION_GRANTED;
}
if (DEBUG) {
Log.d(TAG, "hasCallerOrSelfPermission: "
+ " perm=" + permission
+ " caller=" + Binder.getCallingPid()
+ " self=" + Process.myPid()
+ " ok=" + ok);
}
return ok;
}
public static void enforceCallingOrSelfPermission(Context context, String permission) {
final boolean ok = hasCallerOrSelfPermission(context, permission);
if (!ok) {
throw new SecurityException(String.format("The caller must have the %s permission.",
permission));
}
}
public static boolean hasPackagePermission(Context context, String permission, String pkg) {
boolean ok = false;
if (ALLOW_SELF_CALL && context.getPackageName().equals(pkg)) {
ok = true; // Called by self; always allow.
} else {
ok = context.getPackageManager().checkPermission(permission, pkg)
== PackageManager.PERMISSION_GRANTED;
}
if (DEBUG) {
Log.d(TAG, "hasCallerOrSelfPermission: "
+ " perm=" + permission
+ " pkg=" + pkg
+ " self=" + context.getPackageName()
+ " ok=" + ok);
}
return ok;
}
public static boolean hasCallerUriPermission(Context context, Uri uri, int modeFlags) {
boolean ok = false;
if (ALLOW_SELF_CALL && Binder.getCallingPid() == Process.myPid()) {
ok = true; // Called by self; always allow.
} else {
ok = context.checkCallingUriPermission(uri, modeFlags)
== PackageManager.PERMISSION_GRANTED;
}
if (DEBUG) {
Log.d(TAG, "hasCallerUriPermission: "
+ " uri=" + uri
+ " caller=" + Binder.getCallingPid()
+ " self=" + Process.myPid()
+ " ok=" + ok);
}
return ok;
}
}
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