1/*
2 * Copyright (C) 2007-2008 Esmertec AG.
3 * Copyright (C) 2007-2008 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.google.android.mms.pdu;
19
20import com.google.android.mms.ContentType;
21import com.google.android.mms.InvalidHeaderValueException;
22import com.google.android.mms.MmsException;
23import com.google.android.mms.util.PduCache;
24import com.google.android.mms.util.PduCacheEntry;
25import com.google.android.mms.util.SqliteWrapper;
26
27import android.content.ContentResolver;
28import android.content.ContentUris;
29import android.content.ContentValues;
30import android.content.Context;
31import android.database.Cursor;
32import android.database.DatabaseUtils;
33import android.net.Uri;
34import android.provider.Telephony;
35import android.provider.Telephony.Mms;
36import android.provider.Telephony.MmsSms;
37import android.provider.Telephony.Threads;
38import android.provider.Telephony.Mms.Addr;
39import android.provider.Telephony.Mms.Part;
40import android.provider.Telephony.MmsSms.PendingMessages;
41import android.text.TextUtils;
42import android.util.Log;
43
44import java.io.ByteArrayOutputStream;
45import java.io.FileNotFoundException;
46import java.io.IOException;
47import java.io.InputStream;
48import java.io.OutputStream;
49import java.io.UnsupportedEncodingException;
50import java.util.ArrayList;
51import java.util.HashMap;
52import java.util.HashSet;
53import java.util.Map;
54import java.util.Set;
55import java.util.Map.Entry;
56
57import com.google.android.mms.pdu.EncodedStringValue;
58
59/**
60 * This class is the high-level manager of PDU storage.
61 */
62public class PduPersister {
63    private static final String TAG = "PduPersister";
64    private static final boolean DEBUG = false;
65    private static final boolean LOCAL_LOGV = false;
66
67    private static final long DUMMY_THREAD_ID = Long.MAX_VALUE;
68
69    /**
70     * The uri of temporary drm objects.
71     */
72    public static final String TEMPORARY_DRM_OBJECT_URI =
73        "content://mms/" + Long.MAX_VALUE + "/part";
74    /**
75     * Indicate that we transiently failed to process a MM.
76     */
77    public static final int PROC_STATUS_TRANSIENT_FAILURE   = 1;
78    /**
79     * Indicate that we permanently failed to process a MM.
80     */
81    public static final int PROC_STATUS_PERMANENTLY_FAILURE = 2;
82    /**
83     * Indicate that we have successfully processed a MM.
84     */
85    public static final int PROC_STATUS_COMPLETED           = 3;
86
87    private static PduPersister sPersister;
88    private static final PduCache PDU_CACHE_INSTANCE;
89
90    private static final int[] ADDRESS_FIELDS = new int[] {
91            PduHeaders.BCC,
92            PduHeaders.CC,
93            PduHeaders.FROM,
94            PduHeaders.TO
95    };
96
97    private static final String[] PDU_PROJECTION = new String[] {
98        Mms._ID,
99        Mms.MESSAGE_BOX,
100        Mms.THREAD_ID,
101        Mms.RETRIEVE_TEXT,
102        Mms.SUBJECT,
103        Mms.CONTENT_LOCATION,
104        Mms.CONTENT_TYPE,
105        Mms.MESSAGE_CLASS,
106        Mms.MESSAGE_ID,
107        Mms.RESPONSE_TEXT,
108        Mms.TRANSACTION_ID,
109        Mms.CONTENT_CLASS,
110        Mms.DELIVERY_REPORT,
111        Mms.MESSAGE_TYPE,
112        Mms.MMS_VERSION,
113        Mms.PRIORITY,
114        Mms.READ_REPORT,
115        Mms.READ_STATUS,
116        Mms.REPORT_ALLOWED,
117        Mms.RETRIEVE_STATUS,
118        Mms.STATUS,
119        Mms.DATE,
120        Mms.DELIVERY_TIME,
121        Mms.EXPIRY,
122        Mms.MESSAGE_SIZE,
123        Mms.SUBJECT_CHARSET,
124        Mms.RETRIEVE_TEXT_CHARSET,
125    };
126
127    private static final int PDU_COLUMN_ID                    = 0;
128    private static final int PDU_COLUMN_MESSAGE_BOX           = 1;
129    private static final int PDU_COLUMN_THREAD_ID             = 2;
130    private static final int PDU_COLUMN_RETRIEVE_TEXT         = 3;
131    private static final int PDU_COLUMN_SUBJECT               = 4;
132    private static final int PDU_COLUMN_CONTENT_LOCATION      = 5;
133    private static final int PDU_COLUMN_CONTENT_TYPE          = 6;
134    private static final int PDU_COLUMN_MESSAGE_CLASS         = 7;
135    private static final int PDU_COLUMN_MESSAGE_ID            = 8;
136    private static final int PDU_COLUMN_RESPONSE_TEXT         = 9;
137    private static final int PDU_COLUMN_TRANSACTION_ID        = 10;
138    private static final int PDU_COLUMN_CONTENT_CLASS         = 11;
139    private static final int PDU_COLUMN_DELIVERY_REPORT       = 12;
140    private static final int PDU_COLUMN_MESSAGE_TYPE          = 13;
141    private static final int PDU_COLUMN_MMS_VERSION           = 14;
142    private static final int PDU_COLUMN_PRIORITY              = 15;
143    private static final int PDU_COLUMN_READ_REPORT           = 16;
144    private static final int PDU_COLUMN_READ_STATUS           = 17;
145    private static final int PDU_COLUMN_REPORT_ALLOWED        = 18;
146    private static final int PDU_COLUMN_RETRIEVE_STATUS       = 19;
147    private static final int PDU_COLUMN_STATUS                = 20;
148    private static final int PDU_COLUMN_DATE                  = 21;
149    private static final int PDU_COLUMN_DELIVERY_TIME         = 22;
150    private static final int PDU_COLUMN_EXPIRY                = 23;
151    private static final int PDU_COLUMN_MESSAGE_SIZE          = 24;
152    private static final int PDU_COLUMN_SUBJECT_CHARSET       = 25;
153    private static final int PDU_COLUMN_RETRIEVE_TEXT_CHARSET = 26;
154
155    private static final String[] PART_PROJECTION = new String[] {
156        Part._ID,
157        Part.CHARSET,
158        Part.CONTENT_DISPOSITION,
159        Part.CONTENT_ID,
160        Part.CONTENT_LOCATION,
161        Part.CONTENT_TYPE,
162        Part.FILENAME,
163        Part.NAME,
164        Part.TEXT
165    };
166
167    private static final int PART_COLUMN_ID                  = 0;
168    private static final int PART_COLUMN_CHARSET             = 1;
169    private static final int PART_COLUMN_CONTENT_DISPOSITION = 2;
170    private static final int PART_COLUMN_CONTENT_ID          = 3;
171    private static final int PART_COLUMN_CONTENT_LOCATION    = 4;
172    private static final int PART_COLUMN_CONTENT_TYPE        = 5;
173    private static final int PART_COLUMN_FILENAME            = 6;
174    private static final int PART_COLUMN_NAME                = 7;
175    private static final int PART_COLUMN_TEXT                = 8;
176
177    private static final HashMap<Uri, Integer> MESSAGE_BOX_MAP;
178    // These map are used for convenience in persist() and load().
179    private static final HashMap<Integer, Integer> CHARSET_COLUMN_INDEX_MAP;
180    private static final HashMap<Integer, Integer> ENCODED_STRING_COLUMN_INDEX_MAP;
181    private static final HashMap<Integer, Integer> TEXT_STRING_COLUMN_INDEX_MAP;
182    private static final HashMap<Integer, Integer> OCTET_COLUMN_INDEX_MAP;
183    private static final HashMap<Integer, Integer> LONG_COLUMN_INDEX_MAP;
184    private static final HashMap<Integer, String> CHARSET_COLUMN_NAME_MAP;
185    private static final HashMap<Integer, String> ENCODED_STRING_COLUMN_NAME_MAP;
186    private static final HashMap<Integer, String> TEXT_STRING_COLUMN_NAME_MAP;
187    private static final HashMap<Integer, String> OCTET_COLUMN_NAME_MAP;
188    private static final HashMap<Integer, String> LONG_COLUMN_NAME_MAP;
189
190    static {
191        MESSAGE_BOX_MAP = new HashMap<Uri, Integer>();
192        MESSAGE_BOX_MAP.put(Mms.Inbox.CONTENT_URI,  Mms.MESSAGE_BOX_INBOX);
193        MESSAGE_BOX_MAP.put(Mms.Sent.CONTENT_URI,   Mms.MESSAGE_BOX_SENT);
194        MESSAGE_BOX_MAP.put(Mms.Draft.CONTENT_URI,  Mms.MESSAGE_BOX_DRAFTS);
195        MESSAGE_BOX_MAP.put(Mms.Outbox.CONTENT_URI, Mms.MESSAGE_BOX_OUTBOX);
196
197        CHARSET_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
198        CHARSET_COLUMN_INDEX_MAP.put(PduHeaders.SUBJECT, PDU_COLUMN_SUBJECT_CHARSET);
199        CHARSET_COLUMN_INDEX_MAP.put(PduHeaders.RETRIEVE_TEXT, PDU_COLUMN_RETRIEVE_TEXT_CHARSET);
200
201        CHARSET_COLUMN_NAME_MAP = new HashMap<Integer, String>();
202        CHARSET_COLUMN_NAME_MAP.put(PduHeaders.SUBJECT, Mms.SUBJECT_CHARSET);
203        CHARSET_COLUMN_NAME_MAP.put(PduHeaders.RETRIEVE_TEXT, Mms.RETRIEVE_TEXT_CHARSET);
204
205        // Encoded string field code -> column index/name map.
206        ENCODED_STRING_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
207        ENCODED_STRING_COLUMN_INDEX_MAP.put(PduHeaders.RETRIEVE_TEXT, PDU_COLUMN_RETRIEVE_TEXT);
208        ENCODED_STRING_COLUMN_INDEX_MAP.put(PduHeaders.SUBJECT, PDU_COLUMN_SUBJECT);
209
210        ENCODED_STRING_COLUMN_NAME_MAP = new HashMap<Integer, String>();
211        ENCODED_STRING_COLUMN_NAME_MAP.put(PduHeaders.RETRIEVE_TEXT, Mms.RETRIEVE_TEXT);
212        ENCODED_STRING_COLUMN_NAME_MAP.put(PduHeaders.SUBJECT, Mms.SUBJECT);
213
214        // Text string field code -> column index/name map.
215        TEXT_STRING_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
216        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.CONTENT_LOCATION, PDU_COLUMN_CONTENT_LOCATION);
217        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.CONTENT_TYPE, PDU_COLUMN_CONTENT_TYPE);
218        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_CLASS, PDU_COLUMN_MESSAGE_CLASS);
219        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_ID, PDU_COLUMN_MESSAGE_ID);
220        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.RESPONSE_TEXT, PDU_COLUMN_RESPONSE_TEXT);
221        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.TRANSACTION_ID, PDU_COLUMN_TRANSACTION_ID);
222
223        TEXT_STRING_COLUMN_NAME_MAP = new HashMap<Integer, String>();
224        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.CONTENT_LOCATION, Mms.CONTENT_LOCATION);
225        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.CONTENT_TYPE, Mms.CONTENT_TYPE);
226        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_CLASS, Mms.MESSAGE_CLASS);
227        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_ID, Mms.MESSAGE_ID);
228        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.RESPONSE_TEXT, Mms.RESPONSE_TEXT);
229        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.TRANSACTION_ID, Mms.TRANSACTION_ID);
230
231        // Octet field code -> column index/name map.
232        OCTET_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
233        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.CONTENT_CLASS, PDU_COLUMN_CONTENT_CLASS);
234        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.DELIVERY_REPORT, PDU_COLUMN_DELIVERY_REPORT);
235        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_TYPE, PDU_COLUMN_MESSAGE_TYPE);
236        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.MMS_VERSION, PDU_COLUMN_MMS_VERSION);
237        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.PRIORITY, PDU_COLUMN_PRIORITY);
238        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.READ_REPORT, PDU_COLUMN_READ_REPORT);
239        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.READ_STATUS, PDU_COLUMN_READ_STATUS);
240        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.REPORT_ALLOWED, PDU_COLUMN_REPORT_ALLOWED);
241        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.RETRIEVE_STATUS, PDU_COLUMN_RETRIEVE_STATUS);
242        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.STATUS, PDU_COLUMN_STATUS);
243
244        OCTET_COLUMN_NAME_MAP = new HashMap<Integer, String>();
245        OCTET_COLUMN_NAME_MAP.put(PduHeaders.CONTENT_CLASS, Mms.CONTENT_CLASS);
246        OCTET_COLUMN_NAME_MAP.put(PduHeaders.DELIVERY_REPORT, Mms.DELIVERY_REPORT);
247        OCTET_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_TYPE, Mms.MESSAGE_TYPE);
248        OCTET_COLUMN_NAME_MAP.put(PduHeaders.MMS_VERSION, Mms.MMS_VERSION);
249        OCTET_COLUMN_NAME_MAP.put(PduHeaders.PRIORITY, Mms.PRIORITY);
250        OCTET_COLUMN_NAME_MAP.put(PduHeaders.READ_REPORT, Mms.READ_REPORT);
251        OCTET_COLUMN_NAME_MAP.put(PduHeaders.READ_STATUS, Mms.READ_STATUS);
252        OCTET_COLUMN_NAME_MAP.put(PduHeaders.REPORT_ALLOWED, Mms.REPORT_ALLOWED);
253        OCTET_COLUMN_NAME_MAP.put(PduHeaders.RETRIEVE_STATUS, Mms.RETRIEVE_STATUS);
254        OCTET_COLUMN_NAME_MAP.put(PduHeaders.STATUS, Mms.STATUS);
255
256        // Long field code -> column index/name map.
257        LONG_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
258        LONG_COLUMN_INDEX_MAP.put(PduHeaders.DATE, PDU_COLUMN_DATE);
259        LONG_COLUMN_INDEX_MAP.put(PduHeaders.DELIVERY_TIME, PDU_COLUMN_DELIVERY_TIME);
260        LONG_COLUMN_INDEX_MAP.put(PduHeaders.EXPIRY, PDU_COLUMN_EXPIRY);
261        LONG_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_SIZE, PDU_COLUMN_MESSAGE_SIZE);
262
263        LONG_COLUMN_NAME_MAP = new HashMap<Integer, String>();
264        LONG_COLUMN_NAME_MAP.put(PduHeaders.DATE, Mms.DATE);
265        LONG_COLUMN_NAME_MAP.put(PduHeaders.DELIVERY_TIME, Mms.DELIVERY_TIME);
266        LONG_COLUMN_NAME_MAP.put(PduHeaders.EXPIRY, Mms.EXPIRY);
267        LONG_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_SIZE, Mms.MESSAGE_SIZE);
268
269        PDU_CACHE_INSTANCE = PduCache.getInstance();
270     }
271
272    private final Context mContext;
273    private final ContentResolver mContentResolver;
274
275    private PduPersister(Context context) {
276        mContext = context;
277        mContentResolver = context.getContentResolver();
278     }
279
280    /** Get(or create if not exist) an instance of PduPersister */
281    public static PduPersister getPduPersister(Context context) {
282        if ((sPersister == null) || !context.equals(sPersister.mContext)) {
283            sPersister = new PduPersister(context);
284        }
285
286        return sPersister;
287    }
288
289    private void setEncodedStringValueToHeaders(
290            Cursor c, int columnIndex,
291            PduHeaders headers, int mapColumn) {
292        String s = c.getString(columnIndex);
293        if ((s != null) && (s.length() > 0)) {
294            int charsetColumnIndex = CHARSET_COLUMN_INDEX_MAP.get(mapColumn);
295            int charset = c.getInt(charsetColumnIndex);
296            EncodedStringValue value = new EncodedStringValue(
297                    charset, getBytes(s));
298            headers.setEncodedStringValue(value, mapColumn);
299        }
300    }
301
302    private void setTextStringToHeaders(
303            Cursor c, int columnIndex,
304            PduHeaders headers, int mapColumn) {
305        String s = c.getString(columnIndex);
306        if (s != null) {
307            headers.setTextString(getBytes(s), mapColumn);
308        }
309    }
310
311    private void setOctetToHeaders(
312            Cursor c, int columnIndex,
313            PduHeaders headers, int mapColumn) throws InvalidHeaderValueException {
314        if (!c.isNull(columnIndex)) {
315            int b = c.getInt(columnIndex);
316            headers.setOctet(b, mapColumn);
317        }
318    }
319
320    private void setLongToHeaders(
321            Cursor c, int columnIndex,
322            PduHeaders headers, int mapColumn) {
323        if (!c.isNull(columnIndex)) {
324            long l = c.getLong(columnIndex);
325            headers.setLongInteger(l, mapColumn);
326        }
327    }
328
329    private Integer getIntegerFromPartColumn(Cursor c, int columnIndex) {
330        if (!c.isNull(columnIndex)) {
331            return c.getInt(columnIndex);
332        }
333        return null;
334    }
335
336    private byte[] getByteArrayFromPartColumn(Cursor c, int columnIndex) {
337        if (!c.isNull(columnIndex)) {
338            return getBytes(c.getString(columnIndex));
339        }
340        return null;
341    }
342
343    private PduPart[] loadParts(long msgId) throws MmsException {
344        Cursor c = SqliteWrapper.query(mContext, mContentResolver,
345                Uri.parse("content://mms/" + msgId + "/part"),
346                PART_PROJECTION, null, null, null);
347
348        PduPart[] parts = null;
349
350        try {
351            if ((c == null) || (c.getCount() == 0)) {
352                if (LOCAL_LOGV) {
353                    Log.v(TAG, "loadParts(" + msgId + "): no part to load.");
354                }
355                return null;
356            }
357
358            int partCount = c.getCount();
359            int partIdx = 0;
360            parts = new PduPart[partCount];
361            while (c.moveToNext()) {
362                PduPart part = new PduPart();
363                Integer charset = getIntegerFromPartColumn(
364                        c, PART_COLUMN_CHARSET);
365                if (charset != null) {
366                    part.setCharset(charset);
367                }
368
369                byte[] contentDisposition = getByteArrayFromPartColumn(
370                        c, PART_COLUMN_CONTENT_DISPOSITION);
371                if (contentDisposition != null) {
372                    part.setContentDisposition(contentDisposition);
373                }
374
375                byte[] contentId = getByteArrayFromPartColumn(
376                        c, PART_COLUMN_CONTENT_ID);
377                if (contentId != null) {
378                    part.setContentId(contentId);
379                }
380
381                byte[] contentLocation = getByteArrayFromPartColumn(
382                        c, PART_COLUMN_CONTENT_LOCATION);
383                if (contentLocation != null) {
384                    part.setContentLocation(contentLocation);
385                }
386
387                byte[] contentType = getByteArrayFromPartColumn(
388                        c, PART_COLUMN_CONTENT_TYPE);
389                if (contentType != null) {
390                    part.setContentType(contentType);
391                } else {
392                    throw new MmsException("Content-Type must be set.");
393                }
394
395                byte[] fileName = getByteArrayFromPartColumn(
396                        c, PART_COLUMN_FILENAME);
397                if (fileName != null) {
398                    part.setFilename(fileName);
399                }
400
401                byte[] name = getByteArrayFromPartColumn(
402                        c, PART_COLUMN_NAME);
403                if (name != null) {
404                    part.setName(name);
405                }
406
407                // Construct a Uri for this part.
408                long partId = c.getLong(PART_COLUMN_ID);
409                Uri partURI = Uri.parse("content://mms/part/" + partId);
410                part.setDataUri(partURI);
411
412                // For images/audio/video, we won't keep their data in Part
413                // because their renderer accept Uri as source.
414                String type = toIsoString(contentType);
415                if (!ContentType.isImageType(type)
416                        && !ContentType.isAudioType(type)
417                        && !ContentType.isVideoType(type)) {
418                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
419                    InputStream is = null;
420
421                    // Store simple string values directly in the database instead of an
422                    // external file.  This makes the text searchable and retrieval slightly
423                    // faster.
424                    if (ContentType.TEXT_PLAIN.equals(type) || ContentType.APP_SMIL.equals(type)
425                            || ContentType.TEXT_HTML.equals(type)) {
426                        String text = c.getString(PART_COLUMN_TEXT);
427                        byte [] blob = new EncodedStringValue(text != null ? text : "")
428                            .getTextString();
429                        baos.write(blob, 0, blob.length);
430                    } else {
431
432                        try {
433                            is = mContentResolver.openInputStream(partURI);
434
435                            byte[] buffer = new byte[256];
436                            int len = is.read(buffer);
437                            while (len >= 0) {
438                                baos.write(buffer, 0, len);
439                                len = is.read(buffer);
440                            }
441                        } catch (IOException e) {
442                            Log.e(TAG, "Failed to load part data", e);
443                            c.close();
444                            throw new MmsException(e);
445                        } finally {
446                            if (is != null) {
447                                try {
448                                    is.close();
449                                } catch (IOException e) {
450                                    Log.e(TAG, "Failed to close stream", e);
451                                } // Ignore
452                            }
453                        }
454                    }
455                    part.setData(baos.toByteArray());
456                }
457                parts[partIdx++] = part;
458            }
459        } finally {
460            if (c != null) {
461                c.close();
462            }
463        }
464
465        return parts;
466    }
467
468    private void loadAddress(long msgId, PduHeaders headers) {
469        Cursor c = SqliteWrapper.query(mContext, mContentResolver,
470                Uri.parse("content://mms/" + msgId + "/addr"),
471                new String[] { Addr.ADDRESS, Addr.CHARSET, Addr.TYPE },
472                null, null, null);
473
474        if (c != null) {
475            try {
476                while (c.moveToNext()) {
477                    String addr = c.getString(0);
478                    if (!TextUtils.isEmpty(addr)) {
479                        int addrType = c.getInt(2);
480                        switch (addrType) {
481                            case PduHeaders.FROM:
482                                headers.setEncodedStringValue(
483                                        new EncodedStringValue(c.getInt(1), getBytes(addr)),
484                                        addrType);
485                                break;
486                            case PduHeaders.TO:
487                            case PduHeaders.CC:
488                            case PduHeaders.BCC:
489                                headers.appendEncodedStringValue(
490                                        new EncodedStringValue(c.getInt(1), getBytes(addr)),
491                                        addrType);
492                                break;
493                            default:
494                                Log.e(TAG, "Unknown address type: " + addrType);
495                                break;
496                        }
497                    }
498                }
499            } finally {
500                c.close();
501            }
502        }
503    }
504
505    /**
506     * Load a PDU from storage by given Uri.
507     *
508     * @param uri The Uri of the PDU to be loaded.
509     * @return A generic PDU object, it may be cast to dedicated PDU.
510     * @throws MmsException Failed to load some fields of a PDU.
511     */
512    public GenericPdu load(Uri uri) throws MmsException {
513        PduCacheEntry cacheEntry = PDU_CACHE_INSTANCE.get(uri);
514        if (cacheEntry != null) {
515            return cacheEntry.getPdu();
516        }
517
518        Cursor c = SqliteWrapper.query(mContext, mContentResolver, uri,
519                        PDU_PROJECTION, null, null, null);
520        PduHeaders headers = new PduHeaders();
521        Set<Entry<Integer, Integer>> set;
522        long msgId = ContentUris.parseId(uri);
523        int msgBox;
524        long threadId;
525
526        try {
527            if ((c == null) || (c.getCount() != 1) || !c.moveToFirst()) {
528                throw new MmsException("Bad uri: " + uri);
529            }
530
531            msgBox = c.getInt(PDU_COLUMN_MESSAGE_BOX);
532            threadId = c.getLong(PDU_COLUMN_THREAD_ID);
533
534            set = ENCODED_STRING_COLUMN_INDEX_MAP.entrySet();
535            for (Entry<Integer, Integer> e : set) {
536                setEncodedStringValueToHeaders(
537                        c, e.getValue(), headers, e.getKey());
538            }
539
540            set = TEXT_STRING_COLUMN_INDEX_MAP.entrySet();
541            for (Entry<Integer, Integer> e : set) {
542                setTextStringToHeaders(
543                        c, e.getValue(), headers, e.getKey());
544            }
545
546            set = OCTET_COLUMN_INDEX_MAP.entrySet();
547            for (Entry<Integer, Integer> e : set) {
548                setOctetToHeaders(
549                        c, e.getValue(), headers, e.getKey());
550            }
551
552            set = LONG_COLUMN_INDEX_MAP.entrySet();
553            for (Entry<Integer, Integer> e : set) {
554                setLongToHeaders(
555                        c, e.getValue(), headers, e.getKey());
556            }
557        } finally {
558            if (c != null) {
559                c.close();
560            }
561        }
562
563        // Check whether 'msgId' has been assigned a valid value.
564        if (msgId == -1L) {
565            throw new MmsException("Error! ID of the message: -1.");
566        }
567
568        // Load address information of the MM.
569        loadAddress(msgId, headers);
570
571        int msgType = headers.getOctet(PduHeaders.MESSAGE_TYPE);
572        PduBody body = new PduBody();
573
574        // For PDU which type is M_retrieve.conf or Send.req, we should
575        // load multiparts and put them into the body of the PDU.
576        if ((msgType == PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF)
577                || (msgType == PduHeaders.MESSAGE_TYPE_SEND_REQ)) {
578            PduPart[] parts = loadParts(msgId);
579            if (parts != null) {
580                int partsNum = parts.length;
581                for (int i = 0; i < partsNum; i++) {
582                    body.addPart(parts[i]);
583                }
584            }
585        }
586
587        GenericPdu pdu = null;
588        switch (msgType) {
589            case PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND:
590                pdu = new NotificationInd(headers);
591                break;
592            case PduHeaders.MESSAGE_TYPE_DELIVERY_IND:
593                pdu = new DeliveryInd(headers);
594                break;
595            case PduHeaders.MESSAGE_TYPE_READ_ORIG_IND:
596                pdu = new ReadOrigInd(headers);
597                break;
598            case PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF:
599                pdu = new RetrieveConf(headers, body);
600                break;
601            case PduHeaders.MESSAGE_TYPE_SEND_REQ:
602                pdu = new SendReq(headers, body);
603                break;
604            case PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND:
605                pdu = new AcknowledgeInd(headers);
606                break;
607            case PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND:
608                pdu = new NotifyRespInd(headers);
609                break;
610            case PduHeaders.MESSAGE_TYPE_READ_REC_IND:
611                pdu = new ReadRecInd(headers);
612                break;
613            case PduHeaders.MESSAGE_TYPE_SEND_CONF:
614            case PduHeaders.MESSAGE_TYPE_FORWARD_REQ:
615            case PduHeaders.MESSAGE_TYPE_FORWARD_CONF:
616            case PduHeaders.MESSAGE_TYPE_MBOX_STORE_REQ:
617            case PduHeaders.MESSAGE_TYPE_MBOX_STORE_CONF:
618            case PduHeaders.MESSAGE_TYPE_MBOX_VIEW_REQ:
619            case PduHeaders.MESSAGE_TYPE_MBOX_VIEW_CONF:
620            case PduHeaders.MESSAGE_TYPE_MBOX_UPLOAD_REQ:
621            case PduHeaders.MESSAGE_TYPE_MBOX_UPLOAD_CONF:
622            case PduHeaders.MESSAGE_TYPE_MBOX_DELETE_REQ:
623            case PduHeaders.MESSAGE_TYPE_MBOX_DELETE_CONF:
624            case PduHeaders.MESSAGE_TYPE_MBOX_DESCR:
625            case PduHeaders.MESSAGE_TYPE_DELETE_REQ:
626            case PduHeaders.MESSAGE_TYPE_DELETE_CONF:
627            case PduHeaders.MESSAGE_TYPE_CANCEL_REQ:
628            case PduHeaders.MESSAGE_TYPE_CANCEL_CONF:
629                throw new MmsException(
630                        "Unsupported PDU type: " + Integer.toHexString(msgType));
631
632            default:
633                throw new MmsException(
634                        "Unrecognized PDU type: " + Integer.toHexString(msgType));
635        }
636
637        cacheEntry = new PduCacheEntry(pdu, msgBox, threadId);
638        PDU_CACHE_INSTANCE.put(uri, cacheEntry);
639        return pdu;
640    }
641
642    private void persistAddress(
643            long msgId, int type, EncodedStringValue[] array) {
644        ContentValues values = new ContentValues(3);
645
646        for (EncodedStringValue addr : array) {
647            values.clear(); // Clear all values first.
648            values.put(Addr.ADDRESS, toIsoString(addr.getTextString()));
649            values.put(Addr.CHARSET, addr.getCharacterSet());
650            values.put(Addr.TYPE, type);
651
652            Uri uri = Uri.parse("content://mms/" + msgId + "/addr");
653            SqliteWrapper.insert(mContext, mContentResolver, uri, values);
654        }
655    }
656
657    public Uri persistPart(PduPart part, long msgId)
658            throws MmsException {
659        Uri uri = Uri.parse("content://mms/" + msgId + "/part");
660        ContentValues values = new ContentValues(8);
661
662        int charset = part.getCharset();
663        if (charset != 0 ) {
664            values.put(Part.CHARSET, charset);
665        }
666
667        String contentType = null;
668        if (part.getContentType() != null) {
669            contentType = toIsoString(part.getContentType());
670
671            // There is no "image/jpg" in Android (and it's an invalid mimetype).
672            // Change it to "image/jpeg"
673            if (ContentType.IMAGE_JPG.equals(contentType)) {
674                contentType = ContentType.IMAGE_JPEG;
675            }
676
677            values.put(Part.CONTENT_TYPE, contentType);
678            // To ensure the SMIL part is always the first part.
679            if (ContentType.APP_SMIL.equals(contentType)) {
680                values.put(Part.SEQ, -1);
681            }
682        } else {
683            throw new MmsException("MIME type of the part must be set.");
684        }
685
686        if (part.getFilename() != null) {
687            String fileName = new String(part.getFilename());
688            values.put(Part.FILENAME, fileName);
689        }
690
691        if (part.getName() != null) {
692            String name = new String(part.getName());
693            values.put(Part.NAME, name);
694        }
695
696        Object value = null;
697        if (part.getContentDisposition() != null) {
698            value = toIsoString(part.getContentDisposition());
699            values.put(Part.CONTENT_DISPOSITION, (String) value);
700        }
701
702        if (part.getContentId() != null) {
703            value = toIsoString(part.getContentId());
704            values.put(Part.CONTENT_ID, (String) value);
705        }
706
707        if (part.getContentLocation() != null) {
708            value = toIsoString(part.getContentLocation());
709            values.put(Part.CONTENT_LOCATION, (String) value);
710        }
711
712        Uri res = SqliteWrapper.insert(mContext, mContentResolver, uri, values);
713        if (res == null) {
714            throw new MmsException("Failed to persist part, return null.");
715        }
716
717        persistData(part, res, contentType);
718        // After successfully store the data, we should update
719        // the dataUri of the part.
720        part.setDataUri(res);
721
722        return res;
723    }
724
725    /**
726     * Save data of the part into storage. The source data may be given
727     * by a byte[] or a Uri. If it's a byte[], directly save it
728     * into storage, otherwise load source data from the dataUri and then
729     * save it. If the data is an image, we may scale down it according
730     * to user preference.
731     *
732     * @param part The PDU part which contains data to be saved.
733     * @param uri The URI of the part.
734     * @param contentType The MIME type of the part.
735     * @throws MmsException Cannot find source data or error occurred
736     *         while saving the data.
737     */
738    private void persistData(PduPart part, Uri uri,
739            String contentType)
740            throws MmsException {
741        OutputStream os = null;
742        InputStream is = null;
743
744        try {
745            byte[] data = part.getData();
746            if (ContentType.TEXT_PLAIN.equals(contentType)
747                    || ContentType.APP_SMIL.equals(contentType)
748                    || ContentType.TEXT_HTML.equals(contentType)) {
749                ContentValues cv = new ContentValues();
750                cv.put(Telephony.Mms.Part.TEXT, new EncodedStringValue(data).getString());
751                if (mContentResolver.update(uri, cv, null, null) != 1) {
752                    throw new MmsException("unable to update " + uri.toString());
753                }
754            } else {
755                os = mContentResolver.openOutputStream(uri);
756                if (data == null) {
757                    Uri dataUri = part.getDataUri();
758                    if ((dataUri == null) || (dataUri == uri)) {
759                        Log.w(TAG, "Can't find data for this part.");
760                        return;
761                    }
762                    is = mContentResolver.openInputStream(dataUri);
763
764                    if (LOCAL_LOGV) {
765                        Log.v(TAG, "Saving data to: " + uri);
766                    }
767
768                    byte[] buffer = new byte[256];
769                    for (int len = 0; (len = is.read(buffer)) != -1; ) {
770                        os.write(buffer, 0, len);
771                    }
772                } else {
773                    if (LOCAL_LOGV) {
774                        Log.v(TAG, "Saving data to: " + uri);
775                    }
776                    os.write(data);
777                }
778            }
779        } catch (FileNotFoundException e) {
780            Log.e(TAG, "Failed to open Input/Output stream.", e);
781            throw new MmsException(e);
782        } catch (IOException e) {
783            Log.e(TAG, "Failed to read/write data.", e);
784            throw new MmsException(e);
785        } finally {
786            if (os != null) {
787                try {
788                    os.close();
789                } catch (IOException e) {
790                    Log.e(TAG, "IOException while closing: " + os, e);
791                } // Ignore
792            }
793            if (is != null) {
794                try {
795                    is.close();
796                } catch (IOException e) {
797                    Log.e(TAG, "IOException while closing: " + is, e);
798                } // Ignore
799            }
800        }
801    }
802
803    private void updateAddress(
804            long msgId, int type, EncodedStringValue[] array) {
805        // Delete old address information and then insert new ones.
806        SqliteWrapper.delete(mContext, mContentResolver,
807                Uri.parse("content://mms/" + msgId + "/addr"),
808                Addr.TYPE + "=" + type, null);
809
810        persistAddress(msgId, type, array);
811    }
812
813    /**
814     * Update headers of a SendReq.
815     *
816     * @param uri The PDU which need to be updated.
817     * @param pdu New headers.
818     * @throws MmsException Bad URI or updating failed.
819     */
820    public void updateHeaders(Uri uri, SendReq sendReq) {
821        PDU_CACHE_INSTANCE.purge(uri);
822
823        ContentValues values = new ContentValues(10);
824        byte[] contentType = sendReq.getContentType();
825        if (contentType != null) {
826            values.put(Mms.CONTENT_TYPE, toIsoString(contentType));
827        }
828
829        long date = sendReq.getDate();
830        if (date != -1) {
831            values.put(Mms.DATE, date);
832        }
833
834        int deliveryReport = sendReq.getDeliveryReport();
835        if (deliveryReport != 0) {
836            values.put(Mms.DELIVERY_REPORT, deliveryReport);
837        }
838
839        long expiry = sendReq.getExpiry();
840        if (expiry != -1) {
841            values.put(Mms.EXPIRY, expiry);
842        }
843
844        byte[] msgClass = sendReq.getMessageClass();
845        if (msgClass != null) {
846            values.put(Mms.MESSAGE_CLASS, toIsoString(msgClass));
847        }
848
849        int priority = sendReq.getPriority();
850        if (priority != 0) {
851            values.put(Mms.PRIORITY, priority);
852        }
853
854        int readReport = sendReq.getReadReport();
855        if (readReport != 0) {
856            values.put(Mms.READ_REPORT, readReport);
857        }
858
859        byte[] transId = sendReq.getTransactionId();
860        if (transId != null) {
861            values.put(Mms.TRANSACTION_ID, toIsoString(transId));
862        }
863
864        EncodedStringValue subject = sendReq.getSubject();
865        if (subject != null) {
866            values.put(Mms.SUBJECT, toIsoString(subject.getTextString()));
867            values.put(Mms.SUBJECT_CHARSET, subject.getCharacterSet());
868        } else {
869            values.put(Mms.SUBJECT, "");
870        }
871
872        long messageSize = sendReq.getMessageSize();
873        if (messageSize > 0) {
874            values.put(Mms.MESSAGE_SIZE, messageSize);
875        }
876
877        PduHeaders headers = sendReq.getPduHeaders();
878        HashSet<String> recipients = new HashSet<String>();
879        for (int addrType : ADDRESS_FIELDS) {
880            EncodedStringValue[] array = null;
881            if (addrType == PduHeaders.FROM) {
882                EncodedStringValue v = headers.getEncodedStringValue(addrType);
883                if (v != null) {
884                    array = new EncodedStringValue[1];
885                    array[0] = v;
886                }
887            } else {
888                array = headers.getEncodedStringValues(addrType);
889            }
890
891            if (array != null) {
892                long msgId = ContentUris.parseId(uri);
893                updateAddress(msgId, addrType, array);
894                if (addrType == PduHeaders.TO) {
895                    for (EncodedStringValue v : array) {
896                        if (v != null) {
897                            recipients.add(v.getString());
898                        }
899                    }
900                }
901            }
902        }
903
904        long threadId = Threads.getOrCreateThreadId(mContext, recipients);
905        values.put(Mms.THREAD_ID, threadId);
906
907        SqliteWrapper.update(mContext, mContentResolver, uri, values, null, null);
908    }
909
910    private void updatePart(Uri uri, PduPart part) throws MmsException {
911        ContentValues values = new ContentValues(7);
912
913        int charset = part.getCharset();
914        if (charset != 0 ) {
915            values.put(Part.CHARSET, charset);
916        }
917
918        String contentType = null;
919        if (part.getContentType() != null) {
920            contentType = toIsoString(part.getContentType());
921            values.put(Part.CONTENT_TYPE, contentType);
922        } else {
923            throw new MmsException("MIME type of the part must be set.");
924        }
925
926        if (part.getFilename() != null) {
927            String fileName = new String(part.getFilename());
928            values.put(Part.FILENAME, fileName);
929        }
930
931        if (part.getName() != null) {
932            String name = new String(part.getName());
933            values.put(Part.NAME, name);
934        }
935
936        Object value = null;
937        if (part.getContentDisposition() != null) {
938            value = toIsoString(part.getContentDisposition());
939            values.put(Part.CONTENT_DISPOSITION, (String) value);
940        }
941
942        if (part.getContentId() != null) {
943            value = toIsoString(part.getContentId());
944            values.put(Part.CONTENT_ID, (String) value);
945        }
946
947        if (part.getContentLocation() != null) {
948            value = toIsoString(part.getContentLocation());
949            values.put(Part.CONTENT_LOCATION, (String) value);
950        }
951
952        SqliteWrapper.update(mContext, mContentResolver, uri, values, null, null);
953
954        // Only update the data when:
955        // 1. New binary data supplied or
956        // 2. The Uri of the part is different from the current one.
957        if ((part.getData() != null)
958                || (uri != part.getDataUri())) {
959            persistData(part, uri, contentType);
960        }
961    }
962
963    /**
964     * Update all parts of a PDU.
965     *
966     * @param uri The PDU which need to be updated.
967     * @param body New message body of the PDU.
968     * @throws MmsException Bad URI or updating failed.
969     */
970    public void updateParts(Uri uri, PduBody body)
971            throws MmsException {
972        PduCacheEntry cacheEntry = PDU_CACHE_INSTANCE.get(uri);
973        if (cacheEntry != null) {
974            ((MultimediaMessagePdu) cacheEntry.getPdu()).setBody(body);
975        }
976
977        ArrayList<PduPart> toBeCreated = new ArrayList<PduPart>();
978        HashMap<Uri, PduPart> toBeUpdated = new HashMap<Uri, PduPart>();
979
980        int partsNum = body.getPartsNum();
981        StringBuilder filter = new StringBuilder().append('(');
982        for (int i = 0; i < partsNum; i++) {
983            PduPart part = body.getPart(i);
984            Uri partUri = part.getDataUri();
985            if ((partUri == null) || !partUri.getAuthority().startsWith("mms")) {
986                toBeCreated.add(part);
987            } else {
988                toBeUpdated.put(partUri, part);
989
990                // Don't use 'i > 0' to determine whether we should append
991                // 'AND' since 'i = 0' may be skipped in another branch.
992                if (filter.length() > 1) {
993                    filter.append(" AND ");
994                }
995
996                filter.append(Part._ID);
997                filter.append("!=");
998                DatabaseUtils.appendEscapedSQLString(filter, partUri.getLastPathSegment());
999            }
1000        }
1001        filter.append(')');
1002
1003        long msgId = ContentUris.parseId(uri);
1004
1005        // Remove the parts which doesn't exist anymore.
1006        SqliteWrapper.delete(mContext, mContentResolver,
1007                Uri.parse(Mms.CONTENT_URI + "/" + msgId + "/part"),
1008                filter.length() > 2 ? filter.toString() : null, null);
1009
1010        // Create new parts which didn't exist before.
1011        for (PduPart part : toBeCreated) {
1012            persistPart(part, msgId);
1013        }
1014
1015        // Update the modified parts.
1016        for (Map.Entry<Uri, PduPart> e : toBeUpdated.entrySet()) {
1017            updatePart(e.getKey(), e.getValue());
1018        }
1019    }
1020
1021    /**
1022     * Persist a PDU object to specific location in the storage.
1023     *
1024     * @param pdu The PDU object to be stored.
1025     * @param uri Where to store the given PDU object.
1026     * @return A Uri which can be used to access the stored PDU.
1027     */
1028    public Uri persist(GenericPdu pdu, Uri uri) throws MmsException {
1029        if (uri == null) {
1030            throw new MmsException("Uri may not be null.");
1031        }
1032
1033        Integer msgBox = MESSAGE_BOX_MAP.get(uri);
1034        if (msgBox == null) {
1035            throw new MmsException(
1036                    "Bad destination, must be one of "
1037                    + "content://mms/inbox, content://mms/sent, "
1038                    + "content://mms/drafts, content://mms/outbox, "
1039                    + "content://mms/temp.");
1040        }
1041        PDU_CACHE_INSTANCE.purge(uri);
1042
1043        PduHeaders header = pdu.getPduHeaders();
1044        PduBody body = null;
1045        ContentValues values = new ContentValues();
1046        Set<Entry<Integer, String>> set;
1047
1048        set = ENCODED_STRING_COLUMN_NAME_MAP.entrySet();
1049        for (Entry<Integer, String> e : set) {
1050            int field = e.getKey();
1051            EncodedStringValue encodedString = header.getEncodedStringValue(field);
1052            if (encodedString != null) {
1053                String charsetColumn = CHARSET_COLUMN_NAME_MAP.get(field);
1054                values.put(e.getValue(), toIsoString(encodedString.getTextString()));
1055                values.put(charsetColumn, encodedString.getCharacterSet());
1056            }
1057        }
1058
1059        set = TEXT_STRING_COLUMN_NAME_MAP.entrySet();
1060        for (Entry<Integer, String> e : set){
1061            byte[] text = header.getTextString(e.getKey());
1062            if (text != null) {
1063                values.put(e.getValue(), toIsoString(text));
1064            }
1065        }
1066
1067        set = OCTET_COLUMN_NAME_MAP.entrySet();
1068        for (Entry<Integer, String> e : set){
1069            int b = header.getOctet(e.getKey());
1070            if (b != 0) {
1071                values.put(e.getValue(), b);
1072            }
1073        }
1074
1075        set = LONG_COLUMN_NAME_MAP.entrySet();
1076        for (Entry<Integer, String> e : set){
1077            long l = header.getLongInteger(e.getKey());
1078            if (l != -1L) {
1079                values.put(e.getValue(), l);
1080            }
1081        }
1082
1083        HashMap<Integer, EncodedStringValue[]> addressMap =
1084                new HashMap<Integer, EncodedStringValue[]>(ADDRESS_FIELDS.length);
1085        // Save address information.
1086        for (int addrType : ADDRESS_FIELDS) {
1087            EncodedStringValue[] array = null;
1088            if (addrType == PduHeaders.FROM) {
1089                EncodedStringValue v = header.getEncodedStringValue(addrType);
1090                if (v != null) {
1091                    array = new EncodedStringValue[1];
1092                    array[0] = v;
1093                }
1094            } else {
1095                array = header.getEncodedStringValues(addrType);
1096            }
1097            addressMap.put(addrType, array);
1098        }
1099
1100        HashSet<String> recipients = new HashSet<String>();
1101        long threadId = DUMMY_THREAD_ID;
1102        int msgType = pdu.getMessageType();
1103        // Here we only allocate thread ID for M-Notification.ind,
1104        // M-Retrieve.conf and M-Send.req.
1105        // Some of other PDU types may be allocated a thread ID outside
1106        // this scope.
1107        if ((msgType == PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND)
1108                || (msgType == PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF)
1109                || (msgType == PduHeaders.MESSAGE_TYPE_SEND_REQ)) {
1110            EncodedStringValue[] array = null;
1111            switch (msgType) {
1112                case PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND:
1113                case PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF:
1114                    array = addressMap.get(PduHeaders.FROM);
1115                    break;
1116                case PduHeaders.MESSAGE_TYPE_SEND_REQ:
1117                    array = addressMap.get(PduHeaders.TO);
1118                    break;
1119            }
1120
1121            if (array != null) {
1122                for (EncodedStringValue v : array) {
1123                    if (v != null) {
1124                        recipients.add(v.getString());
1125                    }
1126                }
1127            }
1128            threadId = Threads.getOrCreateThreadId(mContext, recipients);
1129        }
1130        values.put(Mms.THREAD_ID, threadId);
1131
1132        // Save parts first to avoid inconsistent message is loaded
1133        // while saving the parts.
1134        long dummyId = System.currentTimeMillis(); // Dummy ID of the msg.
1135        // Get body if the PDU is a RetrieveConf or SendReq.
1136        if (pdu instanceof MultimediaMessagePdu) {
1137            body = ((MultimediaMessagePdu) pdu).getBody();
1138            // Start saving parts if necessary.
1139            if (body != null) {
1140                int partsNum = body.getPartsNum();
1141                for (int i = 0; i < partsNum; i++) {
1142                    PduPart part = body.getPart(i);
1143                    persistPart(part, dummyId);
1144                }
1145            }
1146        }
1147
1148        Uri res = SqliteWrapper.insert(mContext, mContentResolver, uri, values);
1149        if (res == null) {
1150            throw new MmsException("persist() failed: return null.");
1151        }
1152
1153        // Get the real ID of the PDU and update all parts which were
1154        // saved with the dummy ID.
1155        long msgId = ContentUris.parseId(res);
1156        values = new ContentValues(1);
1157        values.put(Part.MSG_ID, msgId);
1158        SqliteWrapper.update(mContext, mContentResolver,
1159                             Uri.parse("content://mms/" + dummyId + "/part"),
1160                             values, null, null);
1161        // We should return the longest URI of the persisted PDU, for
1162        // example, if input URI is "content://mms/inbox" and the _ID of
1163        // persisted PDU is '8', we should return "content://mms/inbox/8"
1164        // instead of "content://mms/8".
1165        // FIXME: Should the MmsProvider be responsible for this???
1166        res = Uri.parse(uri + "/" + msgId);
1167
1168        // Save address information.
1169        for (int addrType : ADDRESS_FIELDS) {
1170            EncodedStringValue[] array = addressMap.get(addrType);
1171            if (array != null) {
1172                persistAddress(msgId, addrType, array);
1173            }
1174        }
1175
1176        return res;
1177    }
1178
1179    /**
1180     * Move a PDU object from one location to another.
1181     *
1182     * @param from Specify the PDU object to be moved.
1183     * @param to The destination location, should be one of the following:
1184     *        "content://mms/inbox", "content://mms/sent",
1185     *        "content://mms/drafts", "content://mms/outbox",
1186     *        "content://mms/trash".
1187     * @return New Uri of the moved PDU.
1188     * @throws MmsException Error occurred while moving the message.
1189     */
1190    public Uri move(Uri from, Uri to) throws MmsException {
1191        // Check whether the 'msgId' has been assigned a valid value.
1192        long msgId = ContentUris.parseId(from);
1193        if (msgId == -1L) {
1194            throw new MmsException("Error! ID of the message: -1.");
1195        }
1196
1197        // Get corresponding int value of destination box.
1198        Integer msgBox = MESSAGE_BOX_MAP.get(to);
1199        if (msgBox == null) {
1200            throw new MmsException(
1201                    "Bad destination, must be one of "
1202                    + "content://mms/inbox, content://mms/sent, "
1203                    + "content://mms/drafts, content://mms/outbox, "
1204                    + "content://mms/temp.");
1205        }
1206
1207        ContentValues values = new ContentValues(1);
1208        values.put(Mms.MESSAGE_BOX, msgBox);
1209        SqliteWrapper.update(mContext, mContentResolver, from, values, null, null);
1210        return ContentUris.withAppendedId(to, msgId);
1211    }
1212
1213    /**
1214     * Wrap a byte[] into a String.
1215     */
1216    public static String toIsoString(byte[] bytes) {
1217        try {
1218            return new String(bytes, CharacterSets.MIMENAME_ISO_8859_1);
1219        } catch (UnsupportedEncodingException e) {
1220            // Impossible to reach here!
1221            Log.e(TAG, "ISO_8859_1 must be supported!", e);
1222            return "";
1223        }
1224    }
1225
1226    /**
1227     * Unpack a given String into a byte[].
1228     */
1229    public static byte[] getBytes(String data) {
1230        try {
1231            return data.getBytes(CharacterSets.MIMENAME_ISO_8859_1);
1232        } catch (UnsupportedEncodingException e) {
1233            // Impossible to reach here!
1234            Log.e(TAG, "ISO_8859_1 must be supported!", e);
1235            return new byte[0];
1236        }
1237    }
1238
1239    /**
1240     * Remove all objects in the temporary path.
1241     */
1242    public void release() {
1243        Uri uri = Uri.parse(TEMPORARY_DRM_OBJECT_URI);
1244        SqliteWrapper.delete(mContext, mContentResolver, uri, null, null);
1245    }
1246
1247    /**
1248     * Find all messages to be sent or downloaded before certain time.
1249     */
1250    public Cursor getPendingMessages(long dueTime) {
1251        Uri.Builder uriBuilder = PendingMessages.CONTENT_URI.buildUpon();
1252        uriBuilder.appendQueryParameter("protocol", "mms");
1253
1254        String selection = PendingMessages.ERROR_TYPE + " < ?"
1255                + " AND " + PendingMessages.DUE_TIME + " <= ?";
1256
1257        String[] selectionArgs = new String[] {
1258                String.valueOf(MmsSms.ERR_TYPE_GENERIC_PERMANENT),
1259                String.valueOf(dueTime)
1260        };
1261
1262        return SqliteWrapper.query(mContext, mContentResolver,
1263                uriBuilder.build(), null, selection, selectionArgs,
1264                PendingMessages.DUE_TIME);
1265    }
1266}
1267