DefaultCarrierConfigValuesLoader.java revision 461a34b466cb4b13dbbc2ec6330b31e217b2ac4e 
1/*
2 * Copyright (C) 2015 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.support.v7.mms;
18
19import android.content.Context;
20import android.content.res.Resources;
21import android.content.res.XmlResourceParser;
22import android.os.Bundle;
23import android.util.Log;
24import android.util.SparseArray;
25
26import com.android.messaging.R;
27
28/**
29 * The default implementation of loader for carrier config values
30 */
31class DefaultCarrierConfigValuesLoader implements CarrierConfigValuesLoader {
32    /*
33     * Key types
34     */
35    public static final String KEY_TYPE_INT = "int";
36    public static final String KEY_TYPE_BOOL = "bool";
37    public static final String KEY_TYPE_STRING = "string";
38
39    private final Context mContext;
40
41    // Cached values for subIds
42    private final SparseArray<Bundle> mValuesCache;
43
44    DefaultCarrierConfigValuesLoader(final Context context) {
45        mContext = context;
46        mValuesCache = new SparseArray<>();
47    }
48
49    @Override
50    public Bundle get(int subId) {
51        subId = Utils.getEffectiveSubscriptionId(subId);
52        Bundle values;
53        boolean didLoad = false;
54        synchronized (this) {
55            values = mValuesCache.get(subId);
56            if (values == null) {
57                values = new Bundle();
58                mValuesCache.put(subId, values);
59                loadLocked(subId, values);
60                didLoad = true;
61            }
62        }
63        if (didLoad) {
64            Log.i(MmsService.TAG, "Carrier configs loaded: " + values);
65        }
66        return values;
67    }
68
69    private void loadLocked(final int subId, final Bundle values) {
70        // For K and earlier, load from resources
71        loadFromResources(subId, values);
72        if (Utils.hasMmsApi()) {
73            // For L and later, also load from system MMS service
74            loadFromSystem(subId, values);
75        }
76    }
77
78    /**
79     * Load from system, using MMS API
80     *
81     * @param subId which SIM to load for
82     * @param values the result to add to
83     */
84    private static void loadFromSystem(final int subId, final Bundle values) {
85        try {
86            final Bundle systemValues = Utils.getSmsManager(subId).getCarrierConfigValues();
87            if (systemValues != null) {
88                values.putAll(systemValues);
89            }
90        } catch (final Exception e) {
91            Log.w(MmsService.TAG, "Calling system getCarrierConfigValues exception", e);
92        }
93    }
94
95    private void loadFromResources(final int subId, final Bundle values) {
96        // Get a subscription-dependent context for loading the mms_config.xml
97        final Context subContext = Utils.getSubDepContext(mContext, subId);
98        XmlResourceParser xml = null;
99        try {
100            xml = subContext.getResources().getXml(R.xml.mms_config);
101            new CarrierConfigXmlParser(xml, new CarrierConfigXmlParser.KeyValueProcessor() {
102                @Override
103                public void process(String type, String key, String value) {
104                    try {
105                        if (KEY_TYPE_INT.equals(type)) {
106                            values.putInt(key, Integer.parseInt(value));
107                        } else if (KEY_TYPE_BOOL.equals(type)) {
108                            values.putBoolean(key, Boolean.parseBoolean(value));
109                        } else if (KEY_TYPE_STRING.equals(type)) {
110                            values.putString(key, value);
111                        }
112                    } catch (final NumberFormatException e) {
113                        Log.w(MmsService.TAG, "Load carrier value from resources: "
114                                + "invalid " + key + "," + value + "," + type);
115                    }
116                }
117            }).parse();
118        } catch (final Resources.NotFoundException e) {
119            Log.w(MmsService.TAG, "Can not get mms_config.xml");
120        } finally {
121            if (xml != null) {
122                xml.close();
123            }
124        }
125    }
126}
127