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