1/*
2 * Copyright (C) 2009 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 */
16
17package android.content;
18
19import android.content.pm.RegisteredServicesCache;
20import android.content.pm.XmlSerializerAndParser;
21import android.content.res.Resources;
22import android.content.res.TypedArray;
23import android.util.ArrayMap;
24import android.util.AttributeSet;
25import android.util.SparseArray;
26
27import com.android.internal.annotations.GuardedBy;
28
29import org.xmlpull.v1.XmlPullParser;
30import org.xmlpull.v1.XmlSerializer;
31import org.xmlpull.v1.XmlPullParserException;
32
33import java.io.IOException;
34import java.util.ArrayList;
35import java.util.Collection;
36
37/**
38 * A cache of services that export the {@link android.content.ISyncAdapter} interface.
39 * @hide
40 */
41public class SyncAdaptersCache extends RegisteredServicesCache<SyncAdapterType> {
42    private static final String TAG = "Account";
43
44    private static final String SERVICE_INTERFACE = "android.content.SyncAdapter";
45    private static final String SERVICE_META_DATA = "android.content.SyncAdapter";
46    private static final String ATTRIBUTES_NAME = "sync-adapter";
47    private static final MySerializer sSerializer = new MySerializer();
48
49    @GuardedBy("mServicesLock")
50    private SparseArray<ArrayMap<String,String[]>> mAuthorityToSyncAdapters
51            = new SparseArray<>();
52
53    public SyncAdaptersCache(Context context) {
54        super(context, SERVICE_INTERFACE, SERVICE_META_DATA, ATTRIBUTES_NAME, sSerializer);
55    }
56
57    public SyncAdapterType parseServiceAttributes(Resources res,
58            String packageName, AttributeSet attrs) {
59        TypedArray sa = res.obtainAttributes(attrs,
60                com.android.internal.R.styleable.SyncAdapter);
61        try {
62            final String authority =
63                    sa.getString(com.android.internal.R.styleable.SyncAdapter_contentAuthority);
64            final String accountType =
65                    sa.getString(com.android.internal.R.styleable.SyncAdapter_accountType);
66            if (authority == null || accountType == null) {
67                return null;
68            }
69            final boolean userVisible =
70                    sa.getBoolean(com.android.internal.R.styleable.SyncAdapter_userVisible, true);
71            final boolean supportsUploading =
72                    sa.getBoolean(com.android.internal.R.styleable.SyncAdapter_supportsUploading,
73                            true);
74            final boolean isAlwaysSyncable =
75                    sa.getBoolean(com.android.internal.R.styleable.SyncAdapter_isAlwaysSyncable,
76                            false);
77            final boolean allowParallelSyncs =
78                    sa.getBoolean(com.android.internal.R.styleable.SyncAdapter_allowParallelSyncs,
79                            false);
80            final String settingsActivity =
81                    sa.getString(com.android.internal.R.styleable
82                            .SyncAdapter_settingsActivity);
83            return new SyncAdapterType(authority, accountType, userVisible, supportsUploading,
84                    isAlwaysSyncable, allowParallelSyncs, settingsActivity);
85        } finally {
86            sa.recycle();
87        }
88    }
89
90    @Override
91    protected void onServicesChangedLocked(int userId) {
92        synchronized (mServicesLock) {
93            ArrayMap<String,String[]> adapterMap = mAuthorityToSyncAdapters.get(userId);
94            if (adapterMap != null) {
95                adapterMap.clear();
96            }
97        }
98
99        super.onServicesChangedLocked(userId);
100    }
101
102    public String[] getSyncAdapterPackagesForAuthority(String authority, int userId) {
103        synchronized (mServicesLock) {
104            ArrayMap<String,String[]> adapterMap = mAuthorityToSyncAdapters.get(userId);
105            if (adapterMap == null) {
106                adapterMap = new ArrayMap<>();
107                mAuthorityToSyncAdapters.put(userId, adapterMap);
108            }
109            // If the mapping exists, return it
110            if (adapterMap.containsKey(authority)) {
111                return adapterMap.get(authority);
112            }
113            // Create the mapping and cache it
114            String[] syncAdapterPackages;
115            final Collection<RegisteredServicesCache.ServiceInfo<SyncAdapterType>> serviceInfos;
116            serviceInfos = getAllServices(userId);
117            ArrayList<String> packages = new ArrayList<>();
118            for (RegisteredServicesCache.ServiceInfo<SyncAdapterType> serviceInfo : serviceInfos) {
119                if (authority.equals(serviceInfo.type.authority)
120                        && serviceInfo.componentName != null) {
121                    packages.add(serviceInfo.componentName.getPackageName());
122                }
123            }
124            syncAdapterPackages = new String[packages.size()];
125            packages.toArray(syncAdapterPackages);
126            adapterMap.put(authority, syncAdapterPackages);
127
128            return syncAdapterPackages;
129        }
130    }
131
132    @Override
133    protected void onUserRemoved(int userId) {
134        synchronized (mServicesLock) {
135            mAuthorityToSyncAdapters.remove(userId);
136        }
137
138        super.onUserRemoved(userId);
139    }
140
141    static class MySerializer implements XmlSerializerAndParser<SyncAdapterType> {
142        public void writeAsXml(SyncAdapterType item, XmlSerializer out) throws IOException {
143            out.attribute(null, "authority", item.authority);
144            out.attribute(null, "accountType", item.accountType);
145        }
146
147        public SyncAdapterType createFromXml(XmlPullParser parser)
148                throws IOException, XmlPullParserException {
149            final String authority = parser.getAttributeValue(null, "authority");
150            final String accountType = parser.getAttributeValue(null, "accountType");
151            return SyncAdapterType.newKey(authority, accountType);
152        }
153    }
154}
155