1/*
2 * Copyright (C) 2008 Esmertec AG.
3 * Copyright (C) 2008 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package com.android.mms.transaction;
19
20import com.android.mms.LogTag;
21import com.android.mms.ui.MessagingPreferenceActivity;
22import com.google.android.mms.MmsException;
23import android.database.sqlite.SqliteWrapper;
24
25import android.content.Context;
26import android.content.Intent;
27import android.content.SharedPreferences;
28import android.database.Cursor;
29import android.database.sqlite.SQLiteException;
30import android.net.Uri;
31import android.preference.PreferenceManager;
32import android.provider.Telephony.Sms;
33import android.util.Log;
34
35public class SmsMessageSender implements MessageSender {
36    protected final Context mContext;
37    protected final int mNumberOfDests;
38    private final String[] mDests;
39    protected final String mMessageText;
40    protected final String mServiceCenter;
41    protected final long mThreadId;
42    protected long mTimestamp;
43    private static final String TAG = "SmsMessageSender";
44
45    // Default preference values
46    private static final boolean DEFAULT_DELIVERY_REPORT_MODE  = false;
47
48    private static final String[] SERVICE_CENTER_PROJECTION = new String[] {
49        Sms.Conversations.REPLY_PATH_PRESENT,
50        Sms.Conversations.SERVICE_CENTER,
51    };
52
53    private static final int COLUMN_REPLY_PATH_PRESENT = 0;
54    private static final int COLUMN_SERVICE_CENTER     = 1;
55
56    public SmsMessageSender(Context context, String[] dests, String msgText, long threadId) {
57        mContext = context;
58        mMessageText = msgText;
59        if (dests != null) {
60            mNumberOfDests = dests.length;
61            mDests = new String[mNumberOfDests];
62            System.arraycopy(dests, 0, mDests, 0, mNumberOfDests);
63        } else {
64            mNumberOfDests = 0;
65            mDests = null;
66        }
67        mTimestamp = System.currentTimeMillis();
68        mThreadId = threadId;
69        mServiceCenter = getOutgoingServiceCenter(mThreadId);
70    }
71
72    public boolean sendMessage(long token) throws MmsException {
73        // In order to send the message one by one, instead of sending now, the message will split,
74        // and be put into the queue along with each destinations
75        return queueMessage(token);
76    }
77
78    private boolean queueMessage(long token) throws MmsException {
79        if ((mMessageText == null) || (mNumberOfDests == 0)) {
80            // Don't try to send an empty message.
81            throw new MmsException("Null message body or dest.");
82        }
83
84        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
85        boolean requestDeliveryReport = prefs.getBoolean(
86                MessagingPreferenceActivity.SMS_DELIVERY_REPORT_MODE,
87                DEFAULT_DELIVERY_REPORT_MODE);
88
89        for (int i = 0; i < mNumberOfDests; i++) {
90            try {
91                if (LogTag.DEBUG_SEND) {
92                    Log.v(TAG, "queueMessage mDests[i]: " + mDests[i] + " mThreadId: " + mThreadId);
93                }
94                Sms.addMessageToUri(mContext.getContentResolver(),
95                        Uri.parse("content://sms/queued"), mDests[i],
96                        mMessageText, null, mTimestamp,
97                        true /* read */,
98                        requestDeliveryReport,
99                        mThreadId);
100            } catch (SQLiteException e) {
101                if (LogTag.DEBUG_SEND) {
102                    Log.e(TAG, "queueMessage SQLiteException", e);
103                }
104                SqliteWrapper.checkSQLiteException(mContext, e);
105            }
106        }
107        // Notify the SmsReceiverService to send the message out
108        mContext.sendBroadcast(new Intent(SmsReceiverService.ACTION_SEND_MESSAGE,
109                null,
110                mContext,
111                SmsReceiver.class));
112        return false;
113    }
114
115    /**
116     * Get the service center to use for a reply.
117     *
118     * The rule from TS 23.040 D.6 is that we send reply messages to
119     * the service center of the message to which we're replying, but
120     * only if we haven't already replied to that message and only if
121     * <code>TP-Reply-Path</code> was set in that message.
122     *
123     * Therefore, return the service center from the most recent
124     * message in the conversation, but only if it is a message from
125     * the other party, and only if <code>TP-Reply-Path</code> is set.
126     * Otherwise, return null.
127     */
128    private String getOutgoingServiceCenter(long threadId) {
129        Cursor cursor = null;
130
131        try {
132            cursor = SqliteWrapper.query(mContext, mContext.getContentResolver(),
133                            Sms.CONTENT_URI, SERVICE_CENTER_PROJECTION,
134                            "thread_id = " + threadId, null, "date DESC");
135
136            if ((cursor == null) || !cursor.moveToFirst()) {
137                return null;
138            }
139
140            boolean replyPathPresent = (1 == cursor.getInt(COLUMN_REPLY_PATH_PRESENT));
141            return replyPathPresent ? cursor.getString(COLUMN_SERVICE_CENTER) : null;
142        } finally {
143            if (cursor != null) {
144                cursor.close();
145            }
146        }
147    }
148
149    private void log(String msg) {
150        Log.d(LogTag.TAG, "[SmsMsgSender] " + msg);
151    }
152}
153