src/sync/syncable/model_type.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "sync/internal_api/public/base/model_type.h"
   6
   7 #include "base/strings/string_split.h"
   8 #include "base/values.h"
   9 #include "sync/protocol/app_notification_specifics.pb.h"
  10 #include "sync/protocol/app_setting_specifics.pb.h"
  11 #include "sync/protocol/app_specifics.pb.h"
  12 #include "sync/protocol/autofill_specifics.pb.h"
  13 #include "sync/protocol/bookmark_specifics.pb.h"
  14 #include "sync/protocol/extension_setting_specifics.pb.h"
  15 #include "sync/protocol/extension_specifics.pb.h"
  16 #include "sync/protocol/nigori_specifics.pb.h"
  17 #include "sync/protocol/password_specifics.pb.h"
  18 #include "sync/protocol/preference_specifics.pb.h"
  19 #include "sync/protocol/search_engine_specifics.pb.h"
  20 #include "sync/protocol/session_specifics.pb.h"
  21 #include "sync/protocol/sync.pb.h"
  22 #include "sync/protocol/theme_specifics.pb.h"
  23 #include "sync/protocol/typed_url_specifics.pb.h"
  24 #include "sync/syncable/syncable_proto_util.h"
  25
  26 namespace syncer {
  27
  28 // Notes:
  29 // 1) This list must contain exactly the same elements as the set returned by
  30 //    UserSelectableTypes().
  31 // 2) This list must be in the same order as the respective values in the
  32 //    ModelType enum.
  33 const char* kUserSelectableDataTypeNames[] = {
  34   "bookmarks",
  35   "preferences",
  36   "passwords",
  37   "autofill",
  38   "themes",
  39   "typedUrls",
  40   "extensions",
  41   "apps",
  42   "wifiCredentials",
  43   "tabs",
  44 };
  45
  46 COMPILE_ASSERT(
  47     33 == MODEL_TYPE_COUNT,
  48     update_kUserSelectableDataTypeNames_to_match_UserSelectableTypes);
  49
  50 void AddDefaultFieldValue(ModelType datatype,
  51                           sync_pb::EntitySpecifics* specifics) {
  52   if (!ProtocolTypes().Has(datatype)) {
  53     NOTREACHED() << "Only protocol types have field values.";
  54     return;
  55   }
  56   switch (datatype) {
  57     case BOOKMARKS:
  58       specifics->mutable_bookmark();
  59       break;
  60     case PASSWORDS:
  61       specifics->mutable_password();
  62       break;
  63     case PREFERENCES:
  64       specifics->mutable_preference();
  65       break;
  66     case AUTOFILL:
  67       specifics->mutable_autofill();
  68       break;
  69     case AUTOFILL_PROFILE:
  70       specifics->mutable_autofill_profile();
  71       break;
  72     case THEMES:
  73       specifics->mutable_theme();
  74       break;
  75     case TYPED_URLS:
  76       specifics->mutable_typed_url();
  77       break;
  78     case EXTENSIONS:
  79       specifics->mutable_extension();
  80       break;
  81     case NIGORI:
  82       specifics->mutable_nigori();
  83       break;
  84     case SEARCH_ENGINES:
  85       specifics->mutable_search_engine();
  86       break;
  87     case SESSIONS:
  88       specifics->mutable_session();
  89       break;
  90     case APPS:
  91       specifics->mutable_app();
  92       break;
  93     case APP_LIST:
  94       specifics->mutable_app_list();
  95       break;
  96     case APP_SETTINGS:
  97       specifics->mutable_app_setting();
  98       break;
  99     case EXTENSION_SETTINGS:
 100       specifics->mutable_extension_setting();
 101       break;
 102     case APP_NOTIFICATIONS:
 103       specifics->mutable_app_notification();
 104       break;
 105     case HISTORY_DELETE_DIRECTIVES:
 106       specifics->mutable_history_delete_directive();
 107       break;
 108     case SYNCED_NOTIFICATIONS:
 109       specifics->mutable_synced_notification();
 110       break;
 111     case SYNCED_NOTIFICATION_APP_INFO:
 112       specifics->mutable_synced_notification_app_info();
 113       break;
 114     case DEVICE_INFO:
 115       specifics->mutable_device_info();
 116       break;
 117     case EXPERIMENTS:
 118       specifics->mutable_experiments();
 119       break;
 120     case PRIORITY_PREFERENCES:
 121       specifics->mutable_priority_preference();
 122       break;
 123     case DICTIONARY:
 124       specifics->mutable_dictionary();
 125       break;
 126     case FAVICON_IMAGES:
 127       specifics->mutable_favicon_image();
 128       break;
 129     case FAVICON_TRACKING:
 130       specifics->mutable_favicon_tracking();
 131       break;
 132     case SUPERVISED_USER_SETTINGS:
 133       specifics->mutable_managed_user_setting();
 134       break;
 135     case SUPERVISED_USERS:
 136       specifics->mutable_managed_user();
 137       break;
 138     case SUPERVISED_USER_SHARED_SETTINGS:
 139       specifics->mutable_managed_user_shared_setting();
 140       break;
 141     case ARTICLES:
 142       specifics->mutable_article();
 143       break;
 144     case WIFI_CREDENTIALS:
 145       specifics->mutable_wifi_credential();
 146       break;
 147     default:
 148       NOTREACHED() << "No known extension for model type.";
 149   }
 150 }
 151
 152 ModelType GetModelTypeFromSpecificsFieldNumber(int field_number) {
 153   ModelTypeSet protocol_types = ProtocolTypes();
 154   for (ModelTypeSet::Iterator iter = protocol_types.First(); iter.Good();
 155        iter.Inc()) {
 156     if (GetSpecificsFieldNumberFromModelType(iter.Get()) == field_number)
 157       return iter.Get();
 158   }
 159   return UNSPECIFIED;
 160 }
 161
 162 int GetSpecificsFieldNumberFromModelType(ModelType model_type) {
 163   DCHECK(ProtocolTypes().Has(model_type))
 164       << "Only protocol types have field values.";
 165   switch (model_type) {
 166     case BOOKMARKS:
 167       return sync_pb::EntitySpecifics::kBookmarkFieldNumber;
 168     case PASSWORDS:
 169       return sync_pb::EntitySpecifics::kPasswordFieldNumber;
 170     case PREFERENCES:
 171       return sync_pb::EntitySpecifics::kPreferenceFieldNumber;
 172     case AUTOFILL:
 173       return sync_pb::EntitySpecifics::kAutofillFieldNumber;
 174     case AUTOFILL_PROFILE:
 175       return sync_pb::EntitySpecifics::kAutofillProfileFieldNumber;
 176     case THEMES:
 177       return sync_pb::EntitySpecifics::kThemeFieldNumber;
 178     case TYPED_URLS:
 179       return sync_pb::EntitySpecifics::kTypedUrlFieldNumber;
 180     case EXTENSIONS:
 181       return sync_pb::EntitySpecifics::kExtensionFieldNumber;
 182     case NIGORI:
 183       return sync_pb::EntitySpecifics::kNigoriFieldNumber;
 184     case SEARCH_ENGINES:
 185       return sync_pb::EntitySpecifics::kSearchEngineFieldNumber;
 186     case SESSIONS:
 187       return sync_pb::EntitySpecifics::kSessionFieldNumber;
 188     case APPS:
 189       return sync_pb::EntitySpecifics::kAppFieldNumber;
 190     case APP_LIST:
 191       return sync_pb::EntitySpecifics::kAppListFieldNumber;
 192     case APP_SETTINGS:
 193       return sync_pb::EntitySpecifics::kAppSettingFieldNumber;
 194     case EXTENSION_SETTINGS:
 195       return sync_pb::EntitySpecifics::kExtensionSettingFieldNumber;
 196     case APP_NOTIFICATIONS:
 197       return sync_pb::EntitySpecifics::kAppNotificationFieldNumber;
 198     case HISTORY_DELETE_DIRECTIVES:
 199       return sync_pb::EntitySpecifics::kHistoryDeleteDirectiveFieldNumber;
 200     case SYNCED_NOTIFICATIONS:
 201       return sync_pb::EntitySpecifics::kSyncedNotificationFieldNumber;
 202     case SYNCED_NOTIFICATION_APP_INFO:
 203       return sync_pb::EntitySpecifics::kSyncedNotificationAppInfoFieldNumber;
 204     case DEVICE_INFO:
 205       return sync_pb::EntitySpecifics::kDeviceInfoFieldNumber;
 206     case EXPERIMENTS:
 207       return sync_pb::EntitySpecifics::kExperimentsFieldNumber;
 208     case PRIORITY_PREFERENCES:
 209       return sync_pb::EntitySpecifics::kPriorityPreferenceFieldNumber;
 210     case DICTIONARY:
 211       return sync_pb::EntitySpecifics::kDictionaryFieldNumber;
 212     case FAVICON_IMAGES:
 213       return sync_pb::EntitySpecifics::kFaviconImageFieldNumber;
 214     case FAVICON_TRACKING:
 215       return sync_pb::EntitySpecifics::kFaviconTrackingFieldNumber;
 216     case SUPERVISED_USER_SETTINGS:
 217       return sync_pb::EntitySpecifics::kManagedUserSettingFieldNumber;
 218     case SUPERVISED_USERS:
 219       return sync_pb::EntitySpecifics::kManagedUserFieldNumber;
 220     case SUPERVISED_USER_SHARED_SETTINGS:
 221       return sync_pb::EntitySpecifics::kManagedUserSharedSettingFieldNumber;
 222     case ARTICLES:
 223       return sync_pb::EntitySpecifics::kArticleFieldNumber;
 224     case WIFI_CREDENTIALS:
 225       return sync_pb::EntitySpecifics::kWifiCredentialFieldNumber;
 226     default:
 227       NOTREACHED() << "No known extension for model type.";
 228       return 0;
 229   }
 230 }
 231
 232 FullModelTypeSet ToFullModelTypeSet(ModelTypeSet in) {
 233   FullModelTypeSet out;
 234   for (ModelTypeSet::Iterator i = in.First(); i.Good(); i.Inc()) {
 235     out.Put(i.Get());
 236   }
 237   return out;
 238 }
 239
 240 // Note: keep this consistent with GetModelType in entry.cc!
 241 ModelType GetModelType(const sync_pb::SyncEntity& sync_entity) {
 242   DCHECK(!IsRoot(sync_entity));  // Root shouldn't ever go over the wire.
 243
 244   // Backwards compatibility with old (pre-specifics) protocol.
 245   if (sync_entity.has_bookmarkdata())
 246     return BOOKMARKS;
 247
 248   ModelType specifics_type = GetModelTypeFromSpecifics(sync_entity.specifics());
 249   if (specifics_type != UNSPECIFIED)
 250     return specifics_type;
 251
 252   // Loose check for server-created top-level folders that aren't
 253   // bound to a particular model type.
 254   if (!sync_entity.server_defined_unique_tag().empty() &&
 255       IsFolder(sync_entity)) {
 256     return TOP_LEVEL_FOLDER;
 257   }
 258
 259   // This is an item of a datatype we can't understand. Maybe it's
 260   // from the future?  Either we mis-encoded the object, or the
 261   // server sent us entries it shouldn't have.
 262   NOTREACHED() << "Unknown datatype in sync proto.";
 263   return UNSPECIFIED;
 264 }
 265
 266 ModelType GetModelTypeFromSpecifics(const sync_pb::EntitySpecifics& specifics) {
 267   if (specifics.has_bookmark())
 268     return BOOKMARKS;
 269
 270   if (specifics.has_password())
 271     return PASSWORDS;
 272
 273   if (specifics.has_preference())
 274     return PREFERENCES;
 275
 276   if (specifics.has_autofill())
 277     return AUTOFILL;
 278
 279   if (specifics.has_autofill_profile())
 280     return AUTOFILL_PROFILE;
 281
 282   if (specifics.has_theme())
 283     return THEMES;
 284
 285   if (specifics.has_typed_url())
 286     return TYPED_URLS;
 287
 288   if (specifics.has_extension())
 289     return EXTENSIONS;
 290
 291   if (specifics.has_nigori())
 292     return NIGORI;
 293
 294   if (specifics.has_app())
 295     return APPS;
 296
 297   if (specifics.has_app_list())
 298     return APP_LIST;
 299
 300   if (specifics.has_search_engine())
 301     return SEARCH_ENGINES;
 302
 303   if (specifics.has_session())
 304     return SESSIONS;
 305
 306   if (specifics.has_app_setting())
 307     return APP_SETTINGS;
 308
 309   if (specifics.has_extension_setting())
 310     return EXTENSION_SETTINGS;
 311
 312   if (specifics.has_app_notification())
 313     return APP_NOTIFICATIONS;
 314
 315   if (specifics.has_history_delete_directive())
 316     return HISTORY_DELETE_DIRECTIVES;
 317
 318   if (specifics.has_synced_notification())
 319     return SYNCED_NOTIFICATIONS;
 320
 321   if (specifics.has_synced_notification_app_info())
 322     return SYNCED_NOTIFICATION_APP_INFO;
 323
 324   if (specifics.has_device_info())
 325     return DEVICE_INFO;
 326
 327   if (specifics.has_experiments())
 328     return EXPERIMENTS;
 329
 330   if (specifics.has_priority_preference())
 331     return PRIORITY_PREFERENCES;
 332
 333   if (specifics.has_dictionary())
 334     return DICTIONARY;
 335
 336   if (specifics.has_favicon_image())
 337     return FAVICON_IMAGES;
 338
 339   if (specifics.has_favicon_tracking())
 340     return FAVICON_TRACKING;
 341
 342   if (specifics.has_managed_user_setting())
 343     return SUPERVISED_USER_SETTINGS;
 344
 345   if (specifics.has_managed_user())
 346     return SUPERVISED_USERS;
 347
 348   if (specifics.has_managed_user_shared_setting())
 349     return SUPERVISED_USER_SHARED_SETTINGS;
 350
 351   if (specifics.has_article())
 352     return ARTICLES;
 353
 354   if (specifics.has_wifi_credential())
 355     return WIFI_CREDENTIALS;
 356
 357   return UNSPECIFIED;
 358 }
 359
 360 ModelTypeSet ProtocolTypes() {
 361   ModelTypeSet set = ModelTypeSet::All();
 362   set.RemoveAll(ProxyTypes());
 363   return set;
 364 }
 365
 366 ModelTypeSet UserTypes() {
 367   ModelTypeSet set;
 368   // TODO(sync): We should be able to build the actual enumset's internal
 369   // bitset value here at compile time, rather than performing an iteration
 370   // every time.
 371   for (int i = FIRST_USER_MODEL_TYPE; i <= LAST_USER_MODEL_TYPE; ++i) {
 372     set.Put(ModelTypeFromInt(i));
 373   }
 374   return set;
 375 }
 376
 377 ModelTypeSet UserSelectableTypes() {
 378   ModelTypeSet set;
 379   // Although the order doesn't technically matter here, it's clearer to keep
 380   // these in the same order as their definition in the ModelType enum.
 381   set.Put(BOOKMARKS);
 382   set.Put(PREFERENCES);
 383   set.Put(PASSWORDS);
 384   set.Put(AUTOFILL);
 385   set.Put(THEMES);
 386   set.Put(TYPED_URLS);
 387   set.Put(EXTENSIONS);
 388   set.Put(APPS);
 389   set.Put(WIFI_CREDENTIALS);
 390   set.Put(PROXY_TABS);
 391   return set;
 392 }
 393
 394 bool IsUserSelectableType(ModelType model_type) {
 395   return UserSelectableTypes().Has(model_type);
 396 }
 397
 398 ModelTypeNameMap GetUserSelectableTypeNameMap() {
 399   ModelTypeNameMap type_names;
 400   ModelTypeSet type_set = UserSelectableTypes();
 401   ModelTypeSet::Iterator it = type_set.First();
 402   DCHECK_EQ(arraysize(kUserSelectableDataTypeNames), type_set.Size());
 403   for (size_t i = 0; i < arraysize(kUserSelectableDataTypeNames) && it.Good();
 404        ++i, it.Inc()) {
 405     type_names[it.Get()] = kUserSelectableDataTypeNames[i];
 406   }
 407   return type_names;
 408 }
 409
 410 ModelTypeSet EncryptableUserTypes() {
 411   ModelTypeSet encryptable_user_types = UserTypes();
 412   // We never encrypt history delete directives.
 413   encryptable_user_types.Remove(HISTORY_DELETE_DIRECTIVES);
 414   // Synced notifications are not encrypted since the server must see changes.
 415   encryptable_user_types.Remove(SYNCED_NOTIFICATIONS);
 416   // Synced Notification App Info does not have private data, so it is not
 417   // encrypted.
 418   encryptable_user_types.Remove(SYNCED_NOTIFICATION_APP_INFO);
 419   // Device info data is not encrypted because it might be synced before
 420   // encryption is ready.
 421   encryptable_user_types.Remove(DEVICE_INFO);
 422   // Priority preferences are not encrypted because they might be synced before
 423   // encryption is ready.
 424   encryptable_user_types.Remove(PRIORITY_PREFERENCES);
 425   // Supervised user settings are not encrypted since they are set server-side.
 426   encryptable_user_types.Remove(SUPERVISED_USER_SETTINGS);
 427   // Supervised users are not encrypted since they are managed server-side.
 428   encryptable_user_types.Remove(SUPERVISED_USERS);
 429   // Supervised user shared settings are not encrypted since they are managed
 430   // server-side and shared between manager and supervised user.
 431   encryptable_user_types.Remove(SUPERVISED_USER_SHARED_SETTINGS);
 432   // Proxy types have no sync representation and are therefore not encrypted.
 433   // Note however that proxy types map to one or more protocol types, which
 434   // may or may not be encrypted themselves.
 435   encryptable_user_types.RemoveAll(ProxyTypes());
 436   return encryptable_user_types;
 437 }
 438
 439 ModelTypeSet PriorityUserTypes() {
 440   return ModelTypeSet(DEVICE_INFO, PRIORITY_PREFERENCES);
 441 }
 442
 443 ModelTypeSet ControlTypes() {
 444   ModelTypeSet set;
 445   // TODO(sync): We should be able to build the actual enumset's internal
 446   // bitset value here at compile time, rather than performing an iteration
 447   // every time.
 448   for (int i = FIRST_CONTROL_MODEL_TYPE; i <= LAST_CONTROL_MODEL_TYPE; ++i) {
 449     set.Put(ModelTypeFromInt(i));
 450   }
 451
 452   return set;
 453 }
 454
 455 ModelTypeSet ProxyTypes() {
 456   ModelTypeSet set;
 457   set.Put(PROXY_TABS);
 458   return set;
 459 }
 460
 461 bool IsControlType(ModelType model_type) {
 462   return ControlTypes().Has(model_type);
 463 }
 464
 465 ModelTypeSet CoreTypes() {
 466   syncer::ModelTypeSet result;
 467   result.PutAll(PriorityCoreTypes());
 468
 469   // The following are low priority core types.
 470   result.Put(SYNCED_NOTIFICATIONS);
 471   result.Put(SYNCED_NOTIFICATION_APP_INFO);
 472   result.Put(SUPERVISED_USER_SHARED_SETTINGS);
 473
 474   return result;
 475 }
 476
 477 ModelTypeSet PriorityCoreTypes() {
 478   syncer::ModelTypeSet result;
 479   result.PutAll(ControlTypes());
 480
 481   // The following are non-control core types.
 482   result.Put(SUPERVISED_USERS);
 483   result.Put(SUPERVISED_USER_SETTINGS);
 484
 485   return result;
 486 }
 487
 488 ModelTypeSet BackupTypes() {
 489   ModelTypeSet result;
 490   result.Put(BOOKMARKS);
 491   result.Put(PREFERENCES);
 492   result.Put(THEMES);
 493   result.Put(EXTENSIONS);
 494   result.Put(SEARCH_ENGINES);
 495   result.Put(APPS);
 496   result.Put(APP_LIST);
 497   result.Put(APP_SETTINGS);
 498   result.Put(EXTENSION_SETTINGS);
 499   result.Put(PRIORITY_PREFERENCES);
 500   return result;
 501 }
 502
 503 const char* ModelTypeToString(ModelType model_type) {
 504   // This is used in serialization routines as well as for displaying debug
 505   // information.  Do not attempt to change these string values unless you know
 506   // what you're doing.
 507   switch (model_type) {
 508     case TOP_LEVEL_FOLDER:
 509       return "Top Level Folder";
 510     case UNSPECIFIED:
 511       return "Unspecified";
 512     case BOOKMARKS:
 513       return "Bookmarks";
 514     case PREFERENCES:
 515       return "Preferences";
 516     case PASSWORDS:
 517       return "Passwords";
 518     case AUTOFILL:
 519       return "Autofill";
 520     case THEMES:
 521       return "Themes";
 522     case TYPED_URLS:
 523       return "Typed URLs";
 524     case EXTENSIONS:
 525       return "Extensions";
 526     case NIGORI:
 527       return "Encryption keys";
 528     case SEARCH_ENGINES:
 529       return "Search Engines";
 530     case SESSIONS:
 531       return "Sessions";
 532     case APPS:
 533       return "Apps";
 534     case APP_LIST:
 535       return "App List";
 536     case AUTOFILL_PROFILE:
 537       return "Autofill Profiles";
 538     case APP_SETTINGS:
 539       return "App settings";
 540     case EXTENSION_SETTINGS:
 541       return "Extension settings";
 542     case APP_NOTIFICATIONS:
 543       return "App Notifications";
 544     case HISTORY_DELETE_DIRECTIVES:
 545       return "History Delete Directives";
 546     case SYNCED_NOTIFICATIONS:
 547       return "Synced Notifications";
 548     case SYNCED_NOTIFICATION_APP_INFO:
 549       return "Synced Notification App Info";
 550     case DEVICE_INFO:
 551       return "Device Info";
 552     case EXPERIMENTS:
 553       return "Experiments";
 554     case PRIORITY_PREFERENCES:
 555       return "Priority Preferences";
 556     case DICTIONARY:
 557       return "Dictionary";
 558     case FAVICON_IMAGES:
 559       return "Favicon Images";
 560     case FAVICON_TRACKING:
 561       return "Favicon Tracking";
 562     case SUPERVISED_USER_SETTINGS:
 563       return "Managed User Settings";
 564     case SUPERVISED_USERS:
 565       return "Managed Users";
 566     case SUPERVISED_USER_SHARED_SETTINGS:
 567       return "Managed User Shared Settings";
 568     case ARTICLES:
 569       return "Articles";
 570     case WIFI_CREDENTIALS:
 571       return "WiFi Credentials";
 572     case PROXY_TABS:
 573       return "Tabs";
 574     default:
 575       break;
 576   }
 577   NOTREACHED() << "No known extension for model type.";
 578   return "INVALID";
 579 }
 580
 581 // The normal rules about histograms apply here.  Always append to the bottom of
 582 // the list, and be careful to not reuse integer values that have already been
 583 // assigned.  Don't forget to update histograms.xml when you make changes to
 584 // this list.
 585 int ModelTypeToHistogramInt(ModelType model_type) {
 586   switch (model_type) {
 587     case UNSPECIFIED:
 588       return 0;
 589     case TOP_LEVEL_FOLDER:
 590       return 1;
 591     case BOOKMARKS:
 592       return 2;
 593     case PREFERENCES:
 594       return 3;
 595     case PASSWORDS:
 596       return 4;
 597     case AUTOFILL_PROFILE:
 598       return 5;
 599     case AUTOFILL:
 600       return 6;
 601     case THEMES:
 602       return 7;
 603     case TYPED_URLS:
 604       return 8;
 605     case EXTENSIONS:
 606       return 9;
 607     case SEARCH_ENGINES:
 608       return 10;
 609     case SESSIONS:
 610       return 11;
 611     case APPS:
 612       return 12;
 613     case APP_SETTINGS:
 614       return 13;
 615     case EXTENSION_SETTINGS:
 616       return 14;
 617     case APP_NOTIFICATIONS:
 618       return 15;
 619     case HISTORY_DELETE_DIRECTIVES:
 620       return 16;
 621     case NIGORI:
 622       return 17;
 623     case DEVICE_INFO:
 624       return 18;
 625     case EXPERIMENTS:
 626       return 19;
 627     case SYNCED_NOTIFICATIONS:
 628       return 20;
 629     case PRIORITY_PREFERENCES:
 630       return 21;
 631     case DICTIONARY:
 632       return 22;
 633     case FAVICON_IMAGES:
 634       return 23;
 635     case FAVICON_TRACKING:
 636       return 24;
 637     case PROXY_TABS:
 638       return 25;
 639     case SUPERVISED_USER_SETTINGS:
 640       return 26;
 641     case SUPERVISED_USERS:
 642       return 27;
 643     case ARTICLES:
 644       return 28;
 645     case APP_LIST:
 646       return 29;
 647     case SUPERVISED_USER_SHARED_SETTINGS:
 648       return 30;
 649     case SYNCED_NOTIFICATION_APP_INFO:
 650       return 31;
 651     case WIFI_CREDENTIALS:
 652       return 32;
 653     // Silence a compiler warning.
 654     case MODEL_TYPE_COUNT:
 655       return 0;
 656   }
 657   return 0;
 658 }
 659
 660 base::StringValue* ModelTypeToValue(ModelType model_type) {
 661   if (model_type >= FIRST_REAL_MODEL_TYPE) {
 662     return new base::StringValue(ModelTypeToString(model_type));
 663   } else if (model_type == TOP_LEVEL_FOLDER) {
 664     return new base::StringValue("Top-level folder");
 665   } else if (model_type == UNSPECIFIED) {
 666     return new base::StringValue("Unspecified");
 667   }
 668   NOTREACHED();
 669   return new base::StringValue(std::string());
 670 }
 671
 672 ModelType ModelTypeFromValue(const base::Value& value) {
 673   if (value.IsType(base::Value::TYPE_STRING)) {
 674     std::string result;
 675     CHECK(value.GetAsString(&result));
 676     return ModelTypeFromString(result);
 677   } else if (value.IsType(base::Value::TYPE_INTEGER)) {
 678     int result;
 679     CHECK(value.GetAsInteger(&result));
 680     return ModelTypeFromInt(result);
 681   } else {
 682     NOTREACHED() << "Unsupported value type: " << value.GetType();
 683     return UNSPECIFIED;
 684   }
 685 }
 686
 687 ModelType ModelTypeFromString(const std::string& model_type_string) {
 688   if (model_type_string == "Bookmarks")
 689     return BOOKMARKS;
 690   else if (model_type_string == "Preferences")
 691     return PREFERENCES;
 692   else if (model_type_string == "Passwords")
 693     return PASSWORDS;
 694   else if (model_type_string == "Autofill")
 695     return AUTOFILL;
 696   else if (model_type_string == "Autofill Profiles")
 697     return AUTOFILL_PROFILE;
 698   else if (model_type_string == "Themes")
 699     return THEMES;
 700   else if (model_type_string == "Typed URLs")
 701     return TYPED_URLS;
 702   else if (model_type_string == "Extensions")
 703     return EXTENSIONS;
 704   else if (model_type_string == "Encryption keys")
 705     return NIGORI;
 706   else if (model_type_string == "Search Engines")
 707     return SEARCH_ENGINES;
 708   else if (model_type_string == "Sessions")
 709     return SESSIONS;
 710   else if (model_type_string == "Apps")
 711     return APPS;
 712   else if (model_type_string == "App List")
 713     return APP_LIST;
 714   else if (model_type_string == "App settings")
 715     return APP_SETTINGS;
 716   else if (model_type_string == "Extension settings")
 717     return EXTENSION_SETTINGS;
 718   else if (model_type_string == "App Notifications")
 719     return APP_NOTIFICATIONS;
 720   else if (model_type_string == "History Delete Directives")
 721     return HISTORY_DELETE_DIRECTIVES;
 722   else if (model_type_string == "Synced Notifications")
 723     return SYNCED_NOTIFICATIONS;
 724   else if (model_type_string == "Synced Notification App Info")
 725     return SYNCED_NOTIFICATION_APP_INFO;
 726   else if (model_type_string == "Device Info")
 727     return DEVICE_INFO;
 728   else if (model_type_string == "Experiments")
 729     return EXPERIMENTS;
 730   else if (model_type_string == "Priority Preferences")
 731     return PRIORITY_PREFERENCES;
 732   else if (model_type_string == "Dictionary")
 733     return DICTIONARY;
 734   else if (model_type_string == "Favicon Images")
 735     return FAVICON_IMAGES;
 736   else if (model_type_string == "Favicon Tracking")
 737     return FAVICON_TRACKING;
 738   else if (model_type_string == "Managed User Settings")
 739     return SUPERVISED_USER_SETTINGS;
 740   else if (model_type_string == "Managed Users")
 741     return SUPERVISED_USERS;
 742   else if (model_type_string == "Managed User Shared Settings")
 743     return SUPERVISED_USER_SHARED_SETTINGS;
 744   else if (model_type_string == "Articles")
 745     return ARTICLES;
 746   else if (model_type_string == "WiFi Credentials")
 747     return WIFI_CREDENTIALS;
 748   else if (model_type_string == "Tabs")
 749     return PROXY_TABS;
 750   else
 751     NOTREACHED() << "No known model type corresponding to "
 752                  << model_type_string << ".";
 753   return UNSPECIFIED;
 754 }
 755
 756 std::string ModelTypeSetToString(ModelTypeSet model_types) {
 757   std::string result;
 758   for (ModelTypeSet::Iterator it = model_types.First(); it.Good(); it.Inc()) {
 759     if (!result.empty()) {
 760       result += ", ";
 761     }
 762     result += ModelTypeToString(it.Get());
 763   }
 764   return result;
 765 }
 766
 767 ModelTypeSet ModelTypeSetFromString(const std::string& model_types_string) {
 768   std::string working_copy = model_types_string;
 769   ModelTypeSet model_types;
 770   while (!working_copy.empty()) {
 771     // Remove any leading spaces.
 772     working_copy = working_copy.substr(working_copy.find_first_not_of(' '));
 773     if (working_copy.empty())
 774       break;
 775     std::string type_str;
 776     size_t end = working_copy.find(',');
 777     if (end == std::string::npos) {
 778       end = working_copy.length() - 1;
 779       type_str = working_copy;
 780     } else {
 781       type_str = working_copy.substr(0, end);
 782     }
 783     syncer::ModelType type = ModelTypeFromString(type_str);
 784     if (IsRealDataType(type))
 785       model_types.Put(type);
 786     working_copy = working_copy.substr(end + 1);
 787   }
 788   return model_types;
 789 }
 790
 791 base::ListValue* ModelTypeSetToValue(ModelTypeSet model_types) {
 792   base::ListValue* value = new base::ListValue();
 793   for (ModelTypeSet::Iterator it = model_types.First(); it.Good(); it.Inc()) {
 794     value->Append(new base::StringValue(ModelTypeToString(it.Get())));
 795   }
 796   return value;
 797 }
 798
 799 ModelTypeSet ModelTypeSetFromValue(const base::ListValue& value) {
 800   ModelTypeSet result;
 801   for (base::ListValue::const_iterator i = value.begin();
 802        i != value.end(); ++i) {
 803     result.Put(ModelTypeFromValue(**i));
 804   }
 805   return result;
 806 }
 807
 808 // TODO(zea): remove all hardcoded tags in model associators and have them use
 809 // this instead.
 810 // NOTE: Proxy types should return empty strings (so that we don't NOTREACHED
 811 // in tests when we verify they have no root node).
 812 std::string ModelTypeToRootTag(ModelType type) {
 813   switch (type) {
 814     case BOOKMARKS:
 815       return "google_chrome_bookmarks";
 816     case PREFERENCES:
 817       return "google_chrome_preferences";
 818     case PASSWORDS:
 819       return "google_chrome_passwords";
 820     case AUTOFILL:
 821       return "google_chrome_autofill";
 822     case THEMES:
 823       return "google_chrome_themes";
 824     case TYPED_URLS:
 825       return "google_chrome_typed_urls";
 826     case EXTENSIONS:
 827       return "google_chrome_extensions";
 828     case NIGORI:
 829       return "google_chrome_nigori";
 830     case SEARCH_ENGINES:
 831       return "google_chrome_search_engines";
 832     case SESSIONS:
 833       return "google_chrome_sessions";
 834     case APPS:
 835       return "google_chrome_apps";
 836     case APP_LIST:
 837       return "google_chrome_app_list";
 838     case AUTOFILL_PROFILE:
 839       return "google_chrome_autofill_profiles";
 840     case APP_SETTINGS:
 841       return "google_chrome_app_settings";
 842     case EXTENSION_SETTINGS:
 843       return "google_chrome_extension_settings";
 844     case APP_NOTIFICATIONS:
 845       return "google_chrome_app_notifications";
 846     case HISTORY_DELETE_DIRECTIVES:
 847       return "google_chrome_history_delete_directives";
 848     case SYNCED_NOTIFICATIONS:
 849       return "google_chrome_synced_notifications";
 850     case SYNCED_NOTIFICATION_APP_INFO:
 851       return "google_chrome_synced_notification_app_info";
 852     case DEVICE_INFO:
 853       return "google_chrome_device_info";
 854     case EXPERIMENTS:
 855       return "google_chrome_experiments";
 856     case PRIORITY_PREFERENCES:
 857       return "google_chrome_priority_preferences";
 858     case DICTIONARY:
 859       return "google_chrome_dictionary";
 860     case FAVICON_IMAGES:
 861       return "google_chrome_favicon_images";
 862     case FAVICON_TRACKING:
 863       return "google_chrome_favicon_tracking";
 864     case SUPERVISED_USER_SETTINGS:
 865       return "google_chrome_managed_user_settings";
 866     case SUPERVISED_USERS:
 867       return "google_chrome_managed_users";
 868     case SUPERVISED_USER_SHARED_SETTINGS:
 869       return "google_chrome_managed_user_shared_settings";
 870     case ARTICLES:
 871       return "google_chrome_articles";
 872     case WIFI_CREDENTIALS:
 873       return "google_chrome_wifi_credentials";
 874     case PROXY_TABS:
 875       return std::string();
 876     default:
 877       break;
 878   }
 879   NOTREACHED() << "No known extension for model type.";
 880   return "INVALID";
 881 }
 882
 883 // TODO(akalin): Figure out a better way to do these mappings.
 884 // Note: Do not include proxy types in this list. They should never receive
 885 // or trigger notifications.
 886 namespace {
 887 const char kBookmarkNotificationType[] = "BOOKMARK";
 888 const char kPreferenceNotificationType[] = "PREFERENCE";
 889 const char kPasswordNotificationType[] = "PASSWORD";
 890 const char kAutofillNotificationType[] = "AUTOFILL";
 891 const char kThemeNotificationType[] = "THEME";
 892 const char kTypedUrlNotificationType[] = "TYPED_URL";
 893 const char kExtensionNotificationType[] = "EXTENSION";
 894 const char kExtensionSettingNotificationType[] = "EXTENSION_SETTING";
 895 const char kNigoriNotificationType[] = "NIGORI";
 896 const char kAppSettingNotificationType[] = "APP_SETTING";
 897 const char kAppNotificationType[] = "APP";
 898 const char kAppListNotificationType[] = "APP_LIST";
 899 const char kSearchEngineNotificationType[] = "SEARCH_ENGINE";
 900 const char kSessionNotificationType[] = "SESSION";
 901 const char kAutofillProfileNotificationType[] = "AUTOFILL_PROFILE";
 902 const char kAppNotificationNotificationType[] = "APP_NOTIFICATION";
 903 const char kHistoryDeleteDirectiveNotificationType[] =
 904     "HISTORY_DELETE_DIRECTIVE";
 905 const char kSyncedNotificationType[] = "SYNCED_NOTIFICATION";
 906 const char kSyncedNotificationAppInfoType[] = "SYNCED_NOTIFICATION_APP_INFO";
 907 const char kDeviceInfoNotificationType[] = "DEVICE_INFO";
 908 const char kExperimentsNotificationType[] = "EXPERIMENTS";
 909 const char kPriorityPreferenceNotificationType[] = "PRIORITY_PREFERENCE";
 910 const char kDictionaryNotificationType[] = "DICTIONARY";
 911 const char kFaviconImageNotificationType[] = "FAVICON_IMAGE";
 912 const char kFaviconTrackingNotificationType[] = "FAVICON_TRACKING";
 913 const char kSupervisedUserSettingNotificationType[] = "MANAGED_USER_SETTING";
 914 const char kSupervisedUserNotificationType[] = "MANAGED_USER";
 915 const char kSupervisedUserSharedSettingNotificationType[] =
 916     "MANAGED_USER_SHARED_SETTING";
 917 const char kArticleNotificationType[] = "ARTICLE";
 918 }  // namespace
 919
 920 bool RealModelTypeToNotificationType(ModelType model_type,
 921                                      std::string* notification_type) {
 922   switch (model_type) {
 923     case BOOKMARKS:
 924       *notification_type = kBookmarkNotificationType;
 925       return true;
 926     case PREFERENCES:
 927       *notification_type = kPreferenceNotificationType;
 928       return true;
 929     case PASSWORDS:
 930       *notification_type = kPasswordNotificationType;
 931       return true;
 932     case AUTOFILL:
 933       *notification_type = kAutofillNotificationType;
 934       return true;
 935     case THEMES:
 936       *notification_type = kThemeNotificationType;
 937       return true;
 938     case TYPED_URLS:
 939       *notification_type = kTypedUrlNotificationType;
 940       return true;
 941     case EXTENSIONS:
 942       *notification_type = kExtensionNotificationType;
 943       return true;
 944     case NIGORI:
 945       *notification_type = kNigoriNotificationType;
 946       return true;
 947     case APP_SETTINGS:
 948       *notification_type = kAppSettingNotificationType;
 949       return true;
 950     case APPS:
 951       *notification_type = kAppNotificationType;
 952       return true;
 953     case APP_LIST:
 954       *notification_type = kAppListNotificationType;
 955       return true;
 956     case SEARCH_ENGINES:
 957       *notification_type = kSearchEngineNotificationType;
 958       return true;
 959     case SESSIONS:
 960       *notification_type = kSessionNotificationType;
 961       return true;
 962     case AUTOFILL_PROFILE:
 963       *notification_type = kAutofillProfileNotificationType;
 964       return true;
 965     case EXTENSION_SETTINGS:
 966       *notification_type = kExtensionSettingNotificationType;
 967       return true;
 968     case APP_NOTIFICATIONS:
 969       *notification_type = kAppNotificationNotificationType;
 970       return true;
 971     case HISTORY_DELETE_DIRECTIVES:
 972       *notification_type = kHistoryDeleteDirectiveNotificationType;
 973       return true;
 974     case SYNCED_NOTIFICATIONS:
 975       *notification_type = kSyncedNotificationType;
 976       return true;
 977     case SYNCED_NOTIFICATION_APP_INFO:
 978       *notification_type = kSyncedNotificationAppInfoType;
 979       return true;
 980     case DEVICE_INFO:
 981       *notification_type = kDeviceInfoNotificationType;
 982       return true;
 983     case EXPERIMENTS:
 984       *notification_type = kExperimentsNotificationType;
 985       return true;
 986     case PRIORITY_PREFERENCES:
 987       *notification_type = kPriorityPreferenceNotificationType;
 988       return true;
 989     case DICTIONARY:
 990       *notification_type = kDictionaryNotificationType;
 991       return true;
 992     case FAVICON_IMAGES:
 993       *notification_type = kFaviconImageNotificationType;
 994       return true;
 995     case FAVICON_TRACKING:
 996       *notification_type = kFaviconTrackingNotificationType;
 997       return true;
 998     case SUPERVISED_USER_SETTINGS:
 999       *notification_type = kSupervisedUserSettingNotificationType;
1000       return true;
1001     case SUPERVISED_USERS:
1002       *notification_type = kSupervisedUserNotificationType;
1003       return true;
1004     case SUPERVISED_USER_SHARED_SETTINGS:
1005       *notification_type = kSupervisedUserSharedSettingNotificationType;
1006       return true;
1007     case ARTICLES:
1008       *notification_type = kArticleNotificationType;
1009       return true;
1010     default:
1011       break;
1012   }
1013   notification_type->clear();
1014   return false;
1015 }
1016
1017 bool NotificationTypeToRealModelType(const std::string& notification_type,
1018                                      ModelType* model_type) {
1019   if (notification_type == kBookmarkNotificationType) {
1020     *model_type = BOOKMARKS;
1021     return true;
1022   } else if (notification_type == kPreferenceNotificationType) {
1023     *model_type = PREFERENCES;
1024     return true;
1025   } else if (notification_type == kPasswordNotificationType) {
1026     *model_type = PASSWORDS;
1027     return true;
1028   } else if (notification_type == kAutofillNotificationType) {
1029     *model_type = AUTOFILL;
1030     return true;
1031   } else if (notification_type == kThemeNotificationType) {
1032     *model_type = THEMES;
1033     return true;
1034   } else if (notification_type == kTypedUrlNotificationType) {
1035     *model_type = TYPED_URLS;
1036     return true;
1037   } else if (notification_type == kExtensionNotificationType) {
1038     *model_type = EXTENSIONS;
1039     return true;
1040   } else if (notification_type == kNigoriNotificationType) {
1041     *model_type = NIGORI;
1042     return true;
1043   } else if (notification_type == kAppNotificationType) {
1044     *model_type = APPS;
1045     return true;
1046   } else if (notification_type == kAppListNotificationType) {
1047     *model_type = APP_LIST;
1048     return true;
1049   } else if (notification_type == kSearchEngineNotificationType) {
1050     *model_type = SEARCH_ENGINES;
1051     return true;
1052   } else if (notification_type == kSessionNotificationType) {
1053     *model_type = SESSIONS;
1054     return true;
1055   } else if (notification_type == kAutofillProfileNotificationType) {
1056     *model_type = AUTOFILL_PROFILE;
1057     return true;
1058   } else if (notification_type == kAppSettingNotificationType) {
1059     *model_type = APP_SETTINGS;
1060     return true;
1061   } else if (notification_type == kExtensionSettingNotificationType) {
1062     *model_type = EXTENSION_SETTINGS;
1063     return true;
1064   } else if (notification_type == kAppNotificationNotificationType) {
1065     *model_type = APP_NOTIFICATIONS;
1066     return true;
1067   } else if (notification_type == kHistoryDeleteDirectiveNotificationType) {
1068     *model_type = HISTORY_DELETE_DIRECTIVES;
1069     return true;
1070   } else if (notification_type == kSyncedNotificationType) {
1071     *model_type = SYNCED_NOTIFICATIONS;
1072     return true;
1073   } else if (notification_type == kSyncedNotificationAppInfoType) {
1074     *model_type = SYNCED_NOTIFICATION_APP_INFO;
1075     return true;
1076   } else if (notification_type == kDeviceInfoNotificationType) {
1077     *model_type = DEVICE_INFO;
1078     return true;
1079   } else if (notification_type == kExperimentsNotificationType) {
1080     *model_type = EXPERIMENTS;
1081     return true;
1082   } else if (notification_type == kPriorityPreferenceNotificationType) {
1083     *model_type = PRIORITY_PREFERENCES;
1084     return true;
1085   } else if (notification_type == kDictionaryNotificationType) {
1086     *model_type = DICTIONARY;
1087     return true;
1088   } else if (notification_type == kFaviconImageNotificationType) {
1089     *model_type = FAVICON_IMAGES;
1090     return true;
1091   } else if (notification_type == kFaviconTrackingNotificationType) {
1092     *model_type = FAVICON_TRACKING;
1093     return true;
1094   } else if (notification_type == kSupervisedUserSettingNotificationType) {
1095     *model_type = SUPERVISED_USER_SETTINGS;
1096     return true;
1097   } else if (notification_type == kSupervisedUserNotificationType) {
1098     *model_type = SUPERVISED_USERS;
1099     return true;
1100   } else if (notification_type ==
1101       kSupervisedUserSharedSettingNotificationType) {
1102     *model_type = SUPERVISED_USER_SHARED_SETTINGS;
1103     return true;
1104   } else if (notification_type == kArticleNotificationType) {
1105     *model_type = ARTICLES;
1106     return true;
1107   }
1108   *model_type = UNSPECIFIED;
1109   return false;
1110 }
1111
1112 bool IsRealDataType(ModelType model_type) {
1113   return model_type >= FIRST_REAL_MODEL_TYPE && model_type < MODEL_TYPE_COUNT;
1114 }
1115
1116 bool IsProxyType(ModelType model_type) {
1117   return model_type >= FIRST_PROXY_TYPE && model_type <= LAST_PROXY_TYPE;
1118 }
1119
1120 bool IsActOnceDataType(ModelType model_type) {
1121   return model_type == HISTORY_DELETE_DIRECTIVES;
1122 }
1123
1124 }  // namespace syncer