TelephonyProvider.java revision 22b630668cf2db058322f0e85eba8daeea690f75
1/* //device/content/providers/telephony/TelephonyProvider.java 2** 3** Copyright 2006, 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.providers.telephony; 19 20import android.content.ContentProvider; 21import android.content.ContentUris; 22import android.content.ContentValues; 23import android.content.Context; 24import android.content.SharedPreferences; 25import android.content.UriMatcher; 26import android.content.res.Resources; 27import android.content.res.XmlResourceParser; 28import android.database.Cursor; 29import android.database.SQLException; 30import android.database.sqlite.SQLiteDatabase; 31import android.database.sqlite.SQLiteOpenHelper; 32import android.database.sqlite.SQLiteQueryBuilder; 33import android.net.Uri; 34import android.os.Environment; 35import android.os.FileUtils; 36import android.provider.Telephony; 37import android.telephony.TelephonyManager; 38import android.util.Log; 39import android.util.Xml; 40 41import com.android.internal.telephony.BaseCommands; 42import com.android.internal.telephony.Phone; 43import com.android.internal.telephony.PhoneConstants; 44import com.android.internal.util.XmlUtils; 45 46import org.xmlpull.v1.XmlPullParser; 47import org.xmlpull.v1.XmlPullParserException; 48 49import java.io.File; 50import java.io.FileNotFoundException; 51import java.io.FileReader; 52import java.io.IOException; 53 54 55public class TelephonyProvider extends ContentProvider 56{ 57 private static final String DATABASE_NAME = "telephony.db"; 58 private static final boolean DBG = true; 59 60 private static final int DATABASE_VERSION = 7 << 16; 61 private static final int URL_TELEPHONY = 1; 62 private static final int URL_CURRENT = 2; 63 private static final int URL_ID = 3; 64 private static final int URL_RESTOREAPN = 4; 65 private static final int URL_PREFERAPN = 5; 66 private static final int URL_PREFERAPN_NO_UPDATE = 6; 67 68 private static final String TAG = "TelephonyProvider"; 69 private static final String CARRIERS_TABLE = "carriers"; 70 71 private static final String PREF_FILE = "preferred-apn"; 72 private static final String COLUMN_APN_ID = "apn_id"; 73 private static final String APN_CONFIG_CHECKSUM = "apn_conf_checksum"; 74 75 private static final String PARTNER_APNS_PATH = "etc/apns-conf.xml"; 76 77 private static final UriMatcher s_urlMatcher = new UriMatcher(UriMatcher.NO_MATCH); 78 79 private static final ContentValues s_currentNullMap; 80 private static final ContentValues s_currentSetMap; 81 82 static { 83 s_urlMatcher.addURI("telephony", "carriers", URL_TELEPHONY); 84 s_urlMatcher.addURI("telephony", "carriers/current", URL_CURRENT); 85 s_urlMatcher.addURI("telephony", "carriers/#", URL_ID); 86 s_urlMatcher.addURI("telephony", "carriers/restore", URL_RESTOREAPN); 87 s_urlMatcher.addURI("telephony", "carriers/preferapn", URL_PREFERAPN); 88 s_urlMatcher.addURI("telephony", "carriers/preferapn_no_update", URL_PREFERAPN_NO_UPDATE); 89 90 s_currentNullMap = new ContentValues(1); 91 s_currentNullMap.put("current", (Long) null); 92 93 s_currentSetMap = new ContentValues(1); 94 s_currentSetMap.put("current", "1"); 95 } 96 97 private static class DatabaseHelper extends SQLiteOpenHelper { 98 // Context to access resources with 99 private Context mContext; 100 101 /** 102 * DatabaseHelper helper class for loading apns into a database. 103 * 104 * @param context of the user. 105 */ 106 public DatabaseHelper(Context context) { 107 super(context, DATABASE_NAME, null, getVersion(context)); 108 mContext = context; 109 } 110 111 private static int getVersion(Context context) { 112 // Get the database version, combining a static schema version and the XML version 113 Resources r = context.getResources(); 114 XmlResourceParser parser = r.getXml(com.android.internal.R.xml.apns); 115 try { 116 XmlUtils.beginDocument(parser, "apns"); 117 int publicversion = Integer.parseInt(parser.getAttributeValue(null, "version")); 118 return DATABASE_VERSION | publicversion; 119 } catch (Exception e) { 120 Log.e(TAG, "Can't get version of APN database", e); 121 return DATABASE_VERSION; 122 } finally { 123 parser.close(); 124 } 125 } 126 127 @Override 128 public void onCreate(SQLiteDatabase db) { 129 // Set up the database schema 130 db.execSQL("CREATE TABLE " + CARRIERS_TABLE + 131 "(_id INTEGER PRIMARY KEY," + 132 "name TEXT," + 133 "numeric TEXT," + 134 "mcc TEXT," + 135 "mnc TEXT," + 136 "apn TEXT," + 137 "user TEXT," + 138 "server TEXT," + 139 "password TEXT," + 140 "proxy TEXT," + 141 "port TEXT," + 142 "mmsproxy TEXT," + 143 "mmsport TEXT," + 144 "mmsc TEXT," + 145 "authtype INTEGER," + 146 "type TEXT," + 147 "current INTEGER," + 148 "protocol TEXT," + 149 "roaming_protocol TEXT," + 150 "carrier_enabled BOOLEAN," + 151 "bearer INTEGER);"); 152 153 initDatabase(db); 154 } 155 156 private void initDatabase(SQLiteDatabase db) { 157 // Read internal APNS data 158 Resources r = mContext.getResources(); 159 XmlResourceParser parser = r.getXml(com.android.internal.R.xml.apns); 160 int publicversion = -1; 161 try { 162 XmlUtils.beginDocument(parser, "apns"); 163 publicversion = Integer.parseInt(parser.getAttributeValue(null, "version")); 164 loadApns(db, parser); 165 } catch (Exception e) { 166 Log.e(TAG, "Got exception while loading APN database.", e); 167 } finally { 168 parser.close(); 169 } 170 171 // Read external APNS data (partner-provided) 172 XmlPullParser confparser = null; 173 // Environment.getRootDirectory() is a fancy way of saying ANDROID_ROOT or "/system". 174 File confFile = new File(Environment.getRootDirectory(), PARTNER_APNS_PATH); 175 FileReader confreader = null; 176 try { 177 confreader = new FileReader(confFile); 178 confparser = Xml.newPullParser(); 179 confparser.setInput(confreader); 180 XmlUtils.beginDocument(confparser, "apns"); 181 182 // Sanity check. Force internal version and confidential versions to agree 183 int confversion = Integer.parseInt(confparser.getAttributeValue(null, "version")); 184 if (publicversion != confversion) { 185 throw new IllegalStateException("Internal APNS file version doesn't match " 186 + confFile.getAbsolutePath()); 187 } 188 189 loadApns(db, confparser); 190 } catch (FileNotFoundException e) { 191 // It's ok if the file isn't found. It means there isn't a confidential file 192 // Log.e(TAG, "File not found: '" + confFile.getAbsolutePath() + "'"); 193 } catch (Exception e) { 194 Log.e(TAG, "Exception while parsing '" + confFile.getAbsolutePath() + "'", e); 195 } finally { 196 try { if (confreader != null) confreader.close(); } catch (IOException e) { } 197 } 198 } 199 200 @Override 201 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 202 if (oldVersion < (5 << 16 | 6)) { 203 // 5 << 16 is the Database version and 6 in the xml version. 204 205 // This change adds a new authtype column to the database. 206 // The auth type column can have 4 values: 0 (None), 1 (PAP), 2 (CHAP) 207 // 3 (PAP or CHAP). To avoid breaking compatibility, with already working 208 // APNs, the unset value (-1) will be used. If the value is -1. 209 // the authentication will default to 0 (if no user / password) is specified 210 // or to 3. Currently, there have been no reported problems with 211 // pre-configured APNs and hence it is set to -1 for them. Similarly, 212 // if the user, has added a new APN, we set the authentication type 213 // to -1. 214 215 db.execSQL("ALTER TABLE " + CARRIERS_TABLE + 216 " ADD COLUMN authtype INTEGER DEFAULT -1;"); 217 218 oldVersion = 5 << 16 | 6; 219 } 220 if (oldVersion < (6 << 16 | 6)) { 221 // Add protcol fields to the APN. The XML file does not change. 222 db.execSQL("ALTER TABLE " + CARRIERS_TABLE + 223 " ADD COLUMN protocol TEXT DEFAULT IP;"); 224 db.execSQL("ALTER TABLE " + CARRIERS_TABLE + 225 " ADD COLUMN roaming_protocol TEXT DEFAULT IP;"); 226 oldVersion = 6 << 16 | 6; 227 } 228 if (oldVersion < (7 << 16 | 6)) { 229 // Add carrier_enabled, bearer fields to the APN. The XML file does not change. 230 db.execSQL("ALTER TABLE " + CARRIERS_TABLE + 231 " ADD COLUMN carrier_enabled BOOLEAN DEFAULT 1;"); 232 db.execSQL("ALTER TABLE " + CARRIERS_TABLE + 233 " ADD COLUMN bearer INTEGER DEFAULT 0;"); 234 oldVersion = 7 << 16 | 6; 235 } 236 } 237 238 /** 239 * Gets the next row of apn values. 240 * 241 * @param parser the parser 242 * @return the row or null if it's not an apn 243 */ 244 private ContentValues getRow(XmlPullParser parser) { 245 if (!"apn".equals(parser.getName())) { 246 return null; 247 } 248 249 ContentValues map = new ContentValues(); 250 251 String mcc = parser.getAttributeValue(null, "mcc"); 252 String mnc = parser.getAttributeValue(null, "mnc"); 253 String numeric = mcc + mnc; 254 255 map.put(Telephony.Carriers.NUMERIC,numeric); 256 map.put(Telephony.Carriers.MCC, mcc); 257 map.put(Telephony.Carriers.MNC, mnc); 258 map.put(Telephony.Carriers.NAME, parser.getAttributeValue(null, "carrier")); 259 map.put(Telephony.Carriers.APN, parser.getAttributeValue(null, "apn")); 260 map.put(Telephony.Carriers.USER, parser.getAttributeValue(null, "user")); 261 map.put(Telephony.Carriers.SERVER, parser.getAttributeValue(null, "server")); 262 map.put(Telephony.Carriers.PASSWORD, parser.getAttributeValue(null, "password")); 263 264 // do not add NULL to the map so that insert() will set the default value 265 String proxy = parser.getAttributeValue(null, "proxy"); 266 if (proxy != null) { 267 map.put(Telephony.Carriers.PROXY, proxy); 268 } 269 String port = parser.getAttributeValue(null, "port"); 270 if (port != null) { 271 map.put(Telephony.Carriers.PORT, port); 272 } 273 String mmsproxy = parser.getAttributeValue(null, "mmsproxy"); 274 if (mmsproxy != null) { 275 map.put(Telephony.Carriers.MMSPROXY, mmsproxy); 276 } 277 String mmsport = parser.getAttributeValue(null, "mmsport"); 278 if (mmsport != null) { 279 map.put(Telephony.Carriers.MMSPORT, mmsport); 280 } 281 map.put(Telephony.Carriers.MMSC, parser.getAttributeValue(null, "mmsc")); 282 String type = parser.getAttributeValue(null, "type"); 283 if (type != null) { 284 map.put(Telephony.Carriers.TYPE, type); 285 } 286 287 String auth = parser.getAttributeValue(null, "authtype"); 288 if (auth != null) { 289 map.put(Telephony.Carriers.AUTH_TYPE, Integer.parseInt(auth)); 290 } 291 292 String protocol = parser.getAttributeValue(null, "protocol"); 293 if (protocol != null) { 294 map.put(Telephony.Carriers.PROTOCOL, protocol); 295 } 296 297 String roamingProtocol = parser.getAttributeValue(null, "roaming_protocol"); 298 if (roamingProtocol != null) { 299 map.put(Telephony.Carriers.ROAMING_PROTOCOL, roamingProtocol); 300 } 301 302 String carrierEnabled = parser.getAttributeValue(null, "carrier_enabled"); 303 if (carrierEnabled != null) { 304 map.put(Telephony.Carriers.CARRIER_ENABLED, Boolean.parseBoolean(carrierEnabled)); 305 } 306 307 String bearer = parser.getAttributeValue(null, "bearer"); 308 if (bearer != null) { 309 map.put(Telephony.Carriers.BEARER, Integer.parseInt(bearer)); 310 } 311 return map; 312 } 313 314 /* 315 * Loads apns from xml file into the database 316 * 317 * @param db the sqlite database to write to 318 * @param parser the xml parser 319 * 320 */ 321 private void loadApns(SQLiteDatabase db, XmlPullParser parser) { 322 if (parser != null) { 323 try { 324 db.beginTransaction(); 325 while (true) { 326 XmlUtils.nextElement(parser); 327 ContentValues row = getRow(parser); 328 if (row != null) { 329 insertAddingDefaults(db, CARRIERS_TABLE, row); 330 } else { 331 break; // do we really want to skip the rest of the file? 332 } 333 } 334 db.setTransactionSuccessful(); 335 } catch (XmlPullParserException e) { 336 Log.e(TAG, "Got execption while getting perferred time zone.", e); 337 } catch (IOException e) { 338 Log.e(TAG, "Got execption while getting perferred time zone.", e); 339 } catch (SQLException e){ 340 Log.e(TAG, "Got SQLException", e); 341 } finally { 342 db.endTransaction(); 343 } 344 } 345 } 346 347 private void insertAddingDefaults(SQLiteDatabase db, String table, ContentValues row) { 348 // Initialize defaults if any 349 if (row.containsKey(Telephony.Carriers.AUTH_TYPE) == false) { 350 row.put(Telephony.Carriers.AUTH_TYPE, -1); 351 } 352 if (row.containsKey(Telephony.Carriers.PROTOCOL) == false) { 353 row.put(Telephony.Carriers.PROTOCOL, "IP"); 354 } 355 if (row.containsKey(Telephony.Carriers.ROAMING_PROTOCOL) == false) { 356 row.put(Telephony.Carriers.ROAMING_PROTOCOL, "IP"); 357 } 358 if (row.containsKey(Telephony.Carriers.CARRIER_ENABLED) == false) { 359 row.put(Telephony.Carriers.CARRIER_ENABLED, true); 360 } 361 if (row.containsKey(Telephony.Carriers.BEARER) == false) { 362 row.put(Telephony.Carriers.BEARER, 0); 363 } 364 db.insert(CARRIERS_TABLE, null, row); 365 } 366 } 367 368 @Override 369 public boolean onCreate() { 370 long oldCheckSum = getAPNConfigCheckSum(); 371 File confFile = new File(Environment.getRootDirectory(), PARTNER_APNS_PATH); 372 long newCheckSum = -1L; 373 374 if (DBG) { 375 Log.w(TAG, "onCreate: confFile=" + confFile.getAbsolutePath() + 376 " oldCheckSum=" + oldCheckSum); 377 } 378 mOpenHelper = new DatabaseHelper(getContext()); 379 380 if (isLteOnCdma()) { 381 // Check to see if apns-conf.xml file changed. If so, generate db again. 382 // 383 // TODO: Generalize so we can handle apns-conf.xml updates 384 // and preserve any modifications the user might make. For 385 // now its safe on LteOnCdma devices because the user cannot 386 // make changes. 387 try { 388 newCheckSum = FileUtils.checksumCrc32(confFile); 389 if (DBG) Log.w(TAG, "onCreate: newCheckSum=" + newCheckSum); 390 if (oldCheckSum != newCheckSum) { 391 Log.w(TAG, "Rebuilding Telephony.db"); 392 restoreDefaultAPN(); 393 setAPNConfigCheckSum(newCheckSum); 394 } 395 } catch (FileNotFoundException e) { 396 Log.e(TAG, "FileNotFoundException: '" + confFile.getAbsolutePath() + "'", e); 397 } catch (IOException e) { 398 Log.e(TAG, "IOException: '" + confFile.getAbsolutePath() + "'", e); 399 } 400 } 401 return true; 402 } 403 404 private boolean isLteOnCdma() { 405 return TelephonyManager.getLteOnCdmaModeStatic() == PhoneConstants.LTE_ON_CDMA_TRUE; 406 } 407 408 private void setPreferredApnId(Long id) { 409 SharedPreferences sp = getContext().getSharedPreferences(PREF_FILE, Context.MODE_PRIVATE); 410 SharedPreferences.Editor editor = sp.edit(); 411 editor.putLong(COLUMN_APN_ID, id != null ? id.longValue() : -1); 412 editor.apply(); 413 } 414 415 private long getPreferredApnId() { 416 SharedPreferences sp = getContext().getSharedPreferences(PREF_FILE, Context.MODE_PRIVATE); 417 return sp.getLong(COLUMN_APN_ID, -1); 418 } 419 420 private long getAPNConfigCheckSum() { 421 SharedPreferences sp = getContext().getSharedPreferences(PREF_FILE, Context.MODE_PRIVATE); 422 return sp.getLong(APN_CONFIG_CHECKSUM, -1); 423 } 424 425 private void setAPNConfigCheckSum(long id) { 426 SharedPreferences sp = getContext().getSharedPreferences(PREF_FILE, Context.MODE_PRIVATE); 427 SharedPreferences.Editor editor = sp.edit(); 428 editor.putLong(APN_CONFIG_CHECKSUM, id); 429 editor.apply(); 430 } 431 432 @Override 433 public Cursor query(Uri url, String[] projectionIn, String selection, 434 String[] selectionArgs, String sort) { 435 436 checkPermission(); 437 438 SQLiteQueryBuilder qb = new SQLiteQueryBuilder(); 439 qb.setTables("carriers"); 440 441 int match = s_urlMatcher.match(url); 442 switch (match) { 443 // do nothing 444 case URL_TELEPHONY: { 445 break; 446 } 447 448 449 case URL_CURRENT: { 450 qb.appendWhere("current IS NOT NULL"); 451 // do not ignore the selection since MMS may use it. 452 //selection = null; 453 break; 454 } 455 456 case URL_ID: { 457 qb.appendWhere("_id = " + url.getPathSegments().get(1)); 458 break; 459 } 460 461 case URL_PREFERAPN: 462 case URL_PREFERAPN_NO_UPDATE: { 463 qb.appendWhere("_id = " + getPreferredApnId()); 464 break; 465 } 466 467 default: { 468 return null; 469 } 470 } 471 472 SQLiteDatabase db = mOpenHelper.getReadableDatabase(); 473 Cursor ret = qb.query(db, projectionIn, selection, selectionArgs, null, null, sort); 474 ret.setNotificationUri(getContext().getContentResolver(), url); 475 return ret; 476 } 477 478 @Override 479 public String getType(Uri url) 480 { 481 switch (s_urlMatcher.match(url)) { 482 case URL_TELEPHONY: 483 return "vnd.android.cursor.dir/telephony-carrier"; 484 485 case URL_ID: 486 return "vnd.android.cursor.item/telephony-carrier"; 487 488 case URL_PREFERAPN: 489 case URL_PREFERAPN_NO_UPDATE: 490 return "vnd.android.cursor.item/telephony-carrier"; 491 492 default: 493 throw new IllegalArgumentException("Unknown URL " + url); 494 } 495 } 496 497 @Override 498 public Uri insert(Uri url, ContentValues initialValues) 499 { 500 Uri result = null; 501 502 checkPermission(); 503 504 SQLiteDatabase db = mOpenHelper.getWritableDatabase(); 505 int match = s_urlMatcher.match(url); 506 boolean notify = false; 507 switch (match) 508 { 509 case URL_TELEPHONY: 510 { 511 ContentValues values; 512 if (initialValues != null) { 513 values = new ContentValues(initialValues); 514 } else { 515 values = new ContentValues(); 516 } 517 518 // TODO Review this. This code should probably not bet here. 519 // It is valid for the database to return a null string. 520 if (!values.containsKey(Telephony.Carriers.NAME)) { 521 values.put(Telephony.Carriers.NAME, ""); 522 } 523 if (!values.containsKey(Telephony.Carriers.APN)) { 524 values.put(Telephony.Carriers.APN, ""); 525 } 526 if (!values.containsKey(Telephony.Carriers.PORT)) { 527 values.put(Telephony.Carriers.PORT, ""); 528 } 529 if (!values.containsKey(Telephony.Carriers.PROXY)) { 530 values.put(Telephony.Carriers.PROXY, ""); 531 } 532 if (!values.containsKey(Telephony.Carriers.USER)) { 533 values.put(Telephony.Carriers.USER, ""); 534 } 535 if (!values.containsKey(Telephony.Carriers.SERVER)) { 536 values.put(Telephony.Carriers.SERVER, ""); 537 } 538 if (!values.containsKey(Telephony.Carriers.PASSWORD)) { 539 values.put(Telephony.Carriers.PASSWORD, ""); 540 } 541 if (!values.containsKey(Telephony.Carriers.MMSPORT)) { 542 values.put(Telephony.Carriers.MMSPORT, ""); 543 } 544 if (!values.containsKey(Telephony.Carriers.MMSPROXY)) { 545 values.put(Telephony.Carriers.MMSPROXY, ""); 546 } 547 if (!values.containsKey(Telephony.Carriers.AUTH_TYPE)) { 548 values.put(Telephony.Carriers.AUTH_TYPE, -1); 549 } 550 if (!values.containsKey(Telephony.Carriers.PROTOCOL)) { 551 values.put(Telephony.Carriers.PROTOCOL, "IP"); 552 } 553 if (!values.containsKey(Telephony.Carriers.ROAMING_PROTOCOL)) { 554 values.put(Telephony.Carriers.ROAMING_PROTOCOL, "IP"); 555 } 556 if (!values.containsKey(Telephony.Carriers.CARRIER_ENABLED)) { 557 values.put(Telephony.Carriers.CARRIER_ENABLED, true); 558 } 559 if (!values.containsKey(Telephony.Carriers.BEARER)) { 560 values.put(Telephony.Carriers.BEARER, 0); 561 } 562 563 long rowID = db.insert(CARRIERS_TABLE, null, values); 564 if (rowID > 0) 565 { 566 result = ContentUris.withAppendedId(Telephony.Carriers.CONTENT_URI, rowID); 567 notify = true; 568 } 569 570 if (false) Log.d(TAG, "inserted " + values.toString() + " rowID = " + rowID); 571 break; 572 } 573 574 case URL_CURRENT: 575 { 576 // null out the previous operator 577 db.update("carriers", s_currentNullMap, "current IS NOT NULL", null); 578 579 String numeric = initialValues.getAsString("numeric"); 580 int updated = db.update("carriers", s_currentSetMap, 581 "numeric = '" + numeric + "'", null); 582 583 if (updated > 0) 584 { 585 if (false) { 586 Log.d(TAG, "Setting numeric '" + numeric + "' to be the current operator"); 587 } 588 } 589 else 590 { 591 Log.e(TAG, "Failed setting numeric '" + numeric + "' to the current operator"); 592 } 593 break; 594 } 595 596 case URL_PREFERAPN: 597 case URL_PREFERAPN_NO_UPDATE: 598 { 599 if (initialValues != null) { 600 if(initialValues.containsKey(COLUMN_APN_ID)) { 601 setPreferredApnId(initialValues.getAsLong(COLUMN_APN_ID)); 602 } 603 } 604 break; 605 } 606 } 607 608 if (notify) { 609 getContext().getContentResolver().notifyChange(Telephony.Carriers.CONTENT_URI, null); 610 } 611 612 return result; 613 } 614 615 @Override 616 public int delete(Uri url, String where, String[] whereArgs) 617 { 618 int count = 0; 619 620 checkPermission(); 621 622 SQLiteDatabase db = mOpenHelper.getWritableDatabase(); 623 int match = s_urlMatcher.match(url); 624 switch (match) 625 { 626 case URL_TELEPHONY: 627 { 628 count = db.delete(CARRIERS_TABLE, where, whereArgs); 629 break; 630 } 631 632 case URL_CURRENT: 633 { 634 count = db.delete(CARRIERS_TABLE, where, whereArgs); 635 break; 636 } 637 638 case URL_ID: 639 { 640 count = db.delete(CARRIERS_TABLE, Telephony.Carriers._ID + "=?", 641 new String[] { url.getLastPathSegment() }); 642 break; 643 } 644 645 case URL_RESTOREAPN: { 646 count = 1; 647 restoreDefaultAPN(); 648 break; 649 } 650 651 case URL_PREFERAPN: 652 case URL_PREFERAPN_NO_UPDATE: 653 { 654 setPreferredApnId((long)-1); 655 if (match == URL_PREFERAPN) count = 1; 656 break; 657 } 658 659 default: { 660 throw new UnsupportedOperationException("Cannot delete that URL: " + url); 661 } 662 } 663 664 if (count > 0) { 665 getContext().getContentResolver().notifyChange(Telephony.Carriers.CONTENT_URI, null); 666 } 667 668 return count; 669 } 670 671 @Override 672 public int update(Uri url, ContentValues values, String where, String[] whereArgs) 673 { 674 int count = 0; 675 676 checkPermission(); 677 678 SQLiteDatabase db = mOpenHelper.getWritableDatabase(); 679 int match = s_urlMatcher.match(url); 680 switch (match) 681 { 682 case URL_TELEPHONY: 683 { 684 count = db.update(CARRIERS_TABLE, values, where, whereArgs); 685 break; 686 } 687 688 case URL_CURRENT: 689 { 690 count = db.update(CARRIERS_TABLE, values, where, whereArgs); 691 break; 692 } 693 694 case URL_ID: 695 { 696 if (where != null || whereArgs != null) { 697 throw new UnsupportedOperationException( 698 "Cannot update URL " + url + " with a where clause"); 699 } 700 count = db.update(CARRIERS_TABLE, values, Telephony.Carriers._ID + "=?", 701 new String[] { url.getLastPathSegment() }); 702 break; 703 } 704 705 case URL_PREFERAPN: 706 case URL_PREFERAPN_NO_UPDATE: 707 { 708 if (values != null) { 709 if (values.containsKey(COLUMN_APN_ID)) { 710 setPreferredApnId(values.getAsLong(COLUMN_APN_ID)); 711 if (match == URL_PREFERAPN) count = 1; 712 } 713 } 714 break; 715 } 716 717 default: { 718 throw new UnsupportedOperationException("Cannot update that URL: " + url); 719 } 720 } 721 722 if (count > 0) { 723 getContext().getContentResolver().notifyChange(Telephony.Carriers.CONTENT_URI, null); 724 } 725 726 return count; 727 } 728 729 private void checkPermission() { 730 getContext().enforceCallingOrSelfPermission("android.permission.WRITE_APN_SETTINGS", 731 "No permission to write APN settings"); 732 } 733 734 private DatabaseHelper mOpenHelper; 735 736 private void restoreDefaultAPN() { 737 SQLiteDatabase db = mOpenHelper.getWritableDatabase(); 738 739 db.delete(CARRIERS_TABLE, null, null); 740 setPreferredApnId((long)-1); 741 mOpenHelper.initDatabase(db); 742 } 743} 744