UserUtils.java revision 42d5b79db882739368b163f4d5f61546d134cdbb 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16package com.android.providers.contacts.util;
17
18import com.android.providers.contacts.ContactsProvider2;
19
20import android.app.admin.DevicePolicyManager;
21import android.content.Context;
22import android.content.pm.UserInfo;
23import android.os.UserHandle;
24import android.os.UserManager;
25import android.util.Log;
26
27public final class UserUtils {
28    public static final String TAG = ContactsProvider2.TAG;
29
30    public static final boolean VERBOSE_LOGGING = Log.isLoggable(TAG, Log.VERBOSE);
31
32    private UserUtils() {
33    }
34
35    public static UserManager getUserManager(Context context) {
36        return (UserManager) context.getSystemService(Context.USER_SERVICE);
37    }
38
39    private static DevicePolicyManager getDevicePolicyManager(Context context) {
40        return (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
41    }
42
43    public static int getCurrentUserHandle(Context context) {
44        return getUserManager(context).getUserHandle();
45    }
46
47    /**
48     * @param enforceCallerIdCheck True if we want to enforce cross profile
49     *            caller-id device policy.
50     * @return the user ID of the corp user that is linked to the current user,
51     *         if any. If there's no such user or cross-user contacts access is
52     *         disallowed by policy, returns -1.
53     */
54    public static int getCorpUserId(Context context, boolean enforceCallerIdCheck) {
55        final UserManager um = getUserManager(context);
56        if (um == null) {
57            Log.e(TAG, "No user manager service found");
58            return -1;
59        }
60
61        final int myUser = um.getUserHandle();
62
63        if (VERBOSE_LOGGING) {
64            Log.v(TAG, "getCorpUserId: myUser=" + myUser);
65        }
66
67        // Check each user.
68        for (UserInfo ui : um.getUsers()) {
69            if (!ui.isManagedProfile()) {
70                continue; // Not a managed user.
71            }
72            final UserInfo parent = um.getProfileParent(ui.id);
73            if (parent == null) {
74                continue; // No parent.
75            }
76            // Check if it's linked to the current user.
77            if (parent.id == myUser) {
78                // Check if profile is blocking calling id.
79                // TODO DevicePolicyManager is not mockable -- the constructor is private.
80                // Test it somehow.
81                if (enforceCallerIdCheck
82                        && getDevicePolicyManager(context)
83                        .getCrossProfileCallerIdDisabled(ui.getUserHandle())) {
84                    if (VERBOSE_LOGGING) {
85                        Log.v(TAG, "Enterprise caller-id disabled for user " + ui.id);
86                    }
87                    return -1;
88                } else {
89                    if (VERBOSE_LOGGING) {
90                        Log.v(TAG, "Corp user=" + ui.id);
91                    }
92                    return ui.id;
93                }
94            }
95        }
96        if (VERBOSE_LOGGING) {
97            Log.v(TAG, "Corp user not found.");
98        }
99        return -1;
100    }
101}
102