extensions/common/extension.cc

   1 // Copyright (c) 2013 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 "extensions/common/extension.h"
   6
   7 #include "base/base64.h"
   8 #include "base/basictypes.h"
   9 #include "base/command_line.h"
  10 #include "base/files/file_path.h"
  11 #include "base/i18n/rtl.h"
  12 #include "base/logging.h"
  13 #include "base/memory/singleton.h"
  14 #include "base/stl_util.h"
  15 #include "base/strings/string16.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/strings/string_piece.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/strings/stringprintf.h"
  20 #include "base/strings/utf_string_conversions.h"
  21 #include "base/values.h"
  22 #include "base/version.h"
  23 #include "content/public/common/url_constants.h"
  24 #include "extensions/common/constants.h"
  25 #include "extensions/common/error_utils.h"
  26 #include "extensions/common/id_util.h"
  27 #include "extensions/common/manifest.h"
  28 #include "extensions/common/manifest_constants.h"
  29 #include "extensions/common/manifest_handler.h"
  30 #include "extensions/common/manifest_handlers/permissions_parser.h"
  31 #include "extensions/common/permissions/permission_set.h"
  32 #include "extensions/common/permissions/permissions_data.h"
  33 #include "extensions/common/permissions/permissions_info.h"
  34 #include "extensions/common/switches.h"
  35 #include "extensions/common/url_pattern.h"
  36 #include "net/base/filename_util.h"
  37 #include "url/url_util.h"
  38
  39 namespace extensions {
  40
  41 namespace keys = manifest_keys;
  42 namespace values = manifest_values;
  43 namespace errors = manifest_errors;
  44
  45 namespace {
  46
  47 const int kModernManifestVersion = 2;
  48 const int kPEMOutputColumns = 64;
  49
  50 // KEY MARKERS
  51 const char kKeyBeginHeaderMarker[] = "-----BEGIN";
  52 const char kKeyBeginFooterMarker[] = "-----END";
  53 const char kKeyInfoEndMarker[] = "KEY-----";
  54 const char kPublic[] = "PUBLIC";
  55 const char kPrivate[] = "PRIVATE";
  56
  57 bool ContainsReservedCharacters(const base::FilePath& path) {
  58   // We should disallow backslash '\\' as file path separator even on Windows,
  59   // because the backslash is not regarded as file path separator on Linux/Mac.
  60   // Extensions are cross-platform.
  61   // Since FilePath uses backslash '\\' as file path separator on Windows, so we
  62   // need to check manually.
  63   if (path.value().find('\\') != path.value().npos)
  64     return true;
  65   return !net::IsSafePortableRelativePath(path);
  66 }
  67
  68 }  // namespace
  69
  70 const int Extension::kInitFromValueFlagBits = 12;
  71
  72 const char Extension::kMimeType[] = "application/x-chrome-extension";
  73
  74 const int Extension::kValidWebExtentSchemes =
  75     URLPattern::SCHEME_HTTP | URLPattern::SCHEME_HTTPS;
  76
  77 const int Extension::kValidHostPermissionSchemes = URLPattern::SCHEME_CHROMEUI |
  78                                                    URLPattern::SCHEME_HTTP |
  79                                                    URLPattern::SCHEME_HTTPS |
  80                                                    URLPattern::SCHEME_FILE |
  81                                                    URLPattern::SCHEME_FTP;
  82
  83 //
  84 // Extension
  85 //
  86
  87 // static
  88 scoped_refptr<Extension> Extension::Create(const base::FilePath& path,
  89                                            Manifest::Location location,
  90                                            const base::DictionaryValue& value,
  91                                            int flags,
  92                                            std::string* utf8_error) {
  93   return Extension::Create(path,
  94                            location,
  95                            value,
  96                            flags,
  97                            std::string(),  // ID is ignored if empty.
  98                            utf8_error);
  99 }
 100
 101 // TODO(sungguk): Continue removing std::string errors and replacing
 102 // with base::string16. See http://crbug.com/71980.
 103 scoped_refptr<Extension> Extension::Create(const base::FilePath& path,
 104                                            Manifest::Location location,
 105                                            const base::DictionaryValue& value,
 106                                            int flags,
 107                                            const std::string& explicit_id,
 108                                            std::string* utf8_error) {
 109   DCHECK(utf8_error);
 110   base::string16 error;
 111   scoped_ptr<extensions::Manifest> manifest(
 112       new extensions::Manifest(
 113           location, scoped_ptr<base::DictionaryValue>(value.DeepCopy())));
 114
 115   if (!InitExtensionID(manifest.get(), path, explicit_id, flags, &error)) {
 116     *utf8_error = base::UTF16ToUTF8(error);
 117     return NULL;
 118   }
 119
 120   std::vector<InstallWarning> install_warnings;
 121   if (!manifest->ValidateManifest(utf8_error, &install_warnings)) {
 122     return NULL;
 123   }
 124
 125   scoped_refptr<Extension> extension = new Extension(path, manifest.Pass());
 126   extension->install_warnings_.swap(install_warnings);
 127
 128   if (!extension->InitFromValue(flags, &error)) {
 129     *utf8_error = base::UTF16ToUTF8(error);
 130     return NULL;
 131   }
 132
 133   return extension;
 134 }
 135
 136 // static
 137 bool Extension::IdIsValid(const std::string& id) {
 138   // Verify that the id is legal.
 139   if (id.size() != (id_util::kIdSize * 2))
 140     return false;
 141
 142   // We only support lowercase IDs, because IDs can be used as URL components
 143   // (where GURL will lowercase it).
 144   std::string temp = StringToLowerASCII(id);
 145   for (size_t i = 0; i < temp.size(); i++)
 146     if (temp[i] < 'a' || temp[i] > 'p')
 147       return false;
 148
 149   return true;
 150 }
 151
 152 Manifest::Type Extension::GetType() const {
 153   return converted_from_user_script() ?
 154       Manifest::TYPE_USER_SCRIPT : manifest_->type();
 155 }
 156
 157 // static
 158 GURL Extension::GetResourceURL(const GURL& extension_url,
 159                                const std::string& relative_path) {
 160   DCHECK(extension_url.SchemeIs(extensions::kExtensionScheme));
 161   DCHECK_EQ("/", extension_url.path());
 162
 163   std::string path = relative_path;
 164
 165   // If the relative path starts with "/", it is "absolute" relative to the
 166   // extension base directory, but extension_url is already specified to refer
 167   // to that base directory, so strip the leading "/" if present.
 168   if (relative_path.size() > 0 && relative_path[0] == '/')
 169     path = relative_path.substr(1);
 170
 171   GURL ret_val = GURL(extension_url.spec() + path);
 172   DCHECK(StartsWithASCII(ret_val.spec(), extension_url.spec(), false));
 173
 174   return ret_val;
 175 }
 176
 177 bool Extension::ResourceMatches(const URLPatternSet& pattern_set,
 178                                 const std::string& resource) const {
 179   return pattern_set.MatchesURL(extension_url_.Resolve(resource));
 180 }
 181
 182 ExtensionResource Extension::GetResource(
 183     const std::string& relative_path) const {
 184   std::string new_path = relative_path;
 185   // We have some legacy data where resources have leading slashes.
 186   // See: http://crbug.com/121164
 187   if (!new_path.empty() && new_path.at(0) == '/')
 188     new_path.erase(0, 1);
 189   base::FilePath relative_file_path = base::FilePath::FromUTF8Unsafe(new_path);
 190   if (ContainsReservedCharacters(relative_file_path))
 191     return ExtensionResource();
 192   ExtensionResource r(id(), path(), relative_file_path);
 193   if ((creation_flags() & Extension::FOLLOW_SYMLINKS_ANYWHERE)) {
 194     r.set_follow_symlinks_anywhere();
 195   }
 196   return r;
 197 }
 198
 199 ExtensionResource Extension::GetResource(
 200     const base::FilePath& relative_file_path) const {
 201   if (ContainsReservedCharacters(relative_file_path))
 202     return ExtensionResource();
 203   ExtensionResource r(id(), path(), relative_file_path);
 204   if ((creation_flags() & Extension::FOLLOW_SYMLINKS_ANYWHERE)) {
 205     r.set_follow_symlinks_anywhere();
 206   }
 207   return r;
 208 }
 209
 210 // TODO(rafaelw): Move ParsePEMKeyBytes, ProducePEM & FormatPEMForOutput to a
 211 // util class in base:
 212 // http://code.google.com/p/chromium/issues/detail?id=13572
 213 // static
 214 bool Extension::ParsePEMKeyBytes(const std::string& input,
 215                                  std::string* output) {
 216   DCHECK(output);
 217   if (!output)
 218     return false;
 219   if (input.length() == 0)
 220     return false;
 221
 222   std::string working = input;
 223   if (StartsWithASCII(working, kKeyBeginHeaderMarker, true)) {
 224     working = base::CollapseWhitespaceASCII(working, true);
 225     size_t header_pos = working.find(kKeyInfoEndMarker,
 226       sizeof(kKeyBeginHeaderMarker) - 1);
 227     if (header_pos == std::string::npos)
 228       return false;
 229     size_t start_pos = header_pos + sizeof(kKeyInfoEndMarker) - 1;
 230     size_t end_pos = working.rfind(kKeyBeginFooterMarker);
 231     if (end_pos == std::string::npos)
 232       return false;
 233     if (start_pos >= end_pos)
 234       return false;
 235
 236     working = working.substr(start_pos, end_pos - start_pos);
 237     if (working.length() == 0)
 238       return false;
 239   }
 240
 241   return base::Base64Decode(working, output);
 242 }
 243
 244 // static
 245 bool Extension::ProducePEM(const std::string& input, std::string* output) {
 246   DCHECK(output);
 247   if (input.empty())
 248     return false;
 249   base::Base64Encode(input, output);
 250   return true;
 251 }
 252
 253 // static
 254 bool Extension::FormatPEMForFileOutput(const std::string& input,
 255                                        std::string* output,
 256                                        bool is_public) {
 257   DCHECK(output);
 258   if (input.length() == 0)
 259     return false;
 260   *output = "";
 261   output->append(kKeyBeginHeaderMarker);
 262   output->append(" ");
 263   output->append(is_public ? kPublic : kPrivate);
 264   output->append(" ");
 265   output->append(kKeyInfoEndMarker);
 266   output->append("\n");
 267   for (size_t i = 0; i < input.length(); ) {
 268     int slice = std::min<int>(input.length() - i, kPEMOutputColumns);
 269     output->append(input.substr(i, slice));
 270     output->append("\n");
 271     i += slice;
 272   }
 273   output->append(kKeyBeginFooterMarker);
 274   output->append(" ");
 275   output->append(is_public ? kPublic : kPrivate);
 276   output->append(" ");
 277   output->append(kKeyInfoEndMarker);
 278   output->append("\n");
 279
 280   return true;
 281 }
 282
 283 // static
 284 GURL Extension::GetBaseURLFromExtensionId(const std::string& extension_id) {
 285   return GURL(std::string(extensions::kExtensionScheme) +
 286               url::kStandardSchemeSeparator + extension_id + "/");
 287 }
 288
 289 bool Extension::ShowConfigureContextMenus() const {
 290   // Don't show context menu for component extensions. We might want to show
 291   // options for component extension button but now there is no component
 292   // extension with options. All other menu items like uninstall have
 293   // no sense for component extensions.
 294   return location() != Manifest::COMPONENT &&
 295          location() != Manifest::EXTERNAL_COMPONENT;
 296 }
 297
 298 bool Extension::OverlapsWithOrigin(const GURL& origin) const {
 299   if (url() == origin)
 300     return true;
 301
 302   if (web_extent().is_empty())
 303     return false;
 304
 305   // Note: patterns and extents ignore port numbers.
 306   URLPattern origin_only_pattern(kValidWebExtentSchemes);
 307   if (!origin_only_pattern.SetScheme(origin.scheme()))
 308     return false;
 309   origin_only_pattern.SetHost(origin.host());
 310   origin_only_pattern.SetPath("/*");
 311
 312   URLPatternSet origin_only_pattern_list;
 313   origin_only_pattern_list.AddPattern(origin_only_pattern);
 314
 315   return web_extent().OverlapsWith(origin_only_pattern_list);
 316 }
 317
 318 bool Extension::RequiresSortOrdinal() const {
 319   return is_app() && (display_in_launcher_ || display_in_new_tab_page_);
 320 }
 321
 322 bool Extension::ShouldDisplayInAppLauncher() const {
 323   // Only apps should be displayed in the launcher.
 324   return is_app() && display_in_launcher_;
 325 }
 326
 327 bool Extension::ShouldDisplayInNewTabPage() const {
 328   // Only apps should be displayed on the NTP.
 329   return is_app() && display_in_new_tab_page_;
 330 }
 331
 332 bool Extension::ShouldDisplayInExtensionSettings() const {
 333   // Don't show for themes since the settings UI isn't really useful for them.
 334   if (is_theme())
 335     return false;
 336
 337   // Don't show component extensions and invisible apps.
 338   if (ShouldNotBeVisible())
 339     return false;
 340
 341   // Always show unpacked extensions and apps.
 342   if (Manifest::IsUnpackedLocation(location()))
 343     return true;
 344
 345   // Unless they are unpacked, never show hosted apps. Note: We intentionally
 346   // show packaged apps and platform apps because there are some pieces of
 347   // functionality that are only available in chrome://extensions/ but which
 348   // are needed for packaged and platform apps. For example, inspecting
 349   // background pages. See http://crbug.com/116134.
 350   if (is_hosted_app())
 351     return false;
 352
 353   return true;
 354 }
 355
 356 bool Extension::ShouldNotBeVisible() const {
 357   // Don't show component extensions because they are only extensions as an
 358   // implementation detail of Chrome.
 359   if (extensions::Manifest::IsComponentLocation(location()) &&
 360       !CommandLine::ForCurrentProcess()->HasSwitch(
 361           switches::kShowComponentExtensionOptions)) {
 362     return true;
 363   }
 364
 365   // Always show unpacked extensions and apps.
 366   if (Manifest::IsUnpackedLocation(location()))
 367     return false;
 368
 369   // Don't show apps that aren't visible in either launcher or ntp.
 370   if (is_app() && !ShouldDisplayInAppLauncher() && !ShouldDisplayInNewTabPage())
 371     return true;
 372
 373   return false;
 374 }
 375
 376 Extension::ManifestData* Extension::GetManifestData(const std::string& key)
 377     const {
 378   DCHECK(finished_parsing_manifest_ || thread_checker_.CalledOnValidThread());
 379   ManifestDataMap::const_iterator iter = manifest_data_.find(key);
 380   if (iter != manifest_data_.end())
 381     return iter->second.get();
 382   return NULL;
 383 }
 384
 385 void Extension::SetManifestData(const std::string& key,
 386                                 Extension::ManifestData* data) {
 387   DCHECK(!finished_parsing_manifest_ && thread_checker_.CalledOnValidThread());
 388   manifest_data_[key] = linked_ptr<ManifestData>(data);
 389 }
 390
 391 Manifest::Location Extension::location() const {
 392   return manifest_->location();
 393 }
 394
 395 const std::string& Extension::id() const {
 396   return manifest_->extension_id();
 397 }
 398
 399 const std::string Extension::VersionString() const {
 400   return version()->GetString();
 401 }
 402
 403 void Extension::AddInstallWarning(const InstallWarning& new_warning) {
 404   install_warnings_.push_back(new_warning);
 405 }
 406
 407 void Extension::AddInstallWarnings(
 408     const std::vector<InstallWarning>& new_warnings) {
 409   install_warnings_.insert(install_warnings_.end(),
 410                            new_warnings.begin(), new_warnings.end());
 411 }
 412
 413 bool Extension::is_app() const {
 414   return manifest_->is_app();
 415 }
 416
 417 bool Extension::is_platform_app() const {
 418   return manifest_->is_platform_app();
 419 }
 420
 421 bool Extension::is_hosted_app() const {
 422   return manifest()->is_hosted_app();
 423 }
 424
 425 bool Extension::is_legacy_packaged_app() const {
 426   return manifest()->is_legacy_packaged_app();
 427 }
 428
 429 bool Extension::is_extension() const {
 430   return manifest()->is_extension();
 431 }
 432
 433 bool Extension::can_be_incognito_enabled() const {
 434   // Only component platform apps are supported in incognito.
 435   return !is_platform_app() || location() == Manifest::COMPONENT;
 436 }
 437
 438 void Extension::AddWebExtentPattern(const URLPattern& pattern) {
 439   // Bookmark apps are permissionless.
 440   if (from_bookmark())
 441     return;
 442
 443   extent_.AddPattern(pattern);
 444 }
 445
 446 bool Extension::is_theme() const {
 447   return manifest()->is_theme();
 448 }
 449
 450 // static
 451 bool Extension::InitExtensionID(extensions::Manifest* manifest,
 452                                 const base::FilePath& path,
 453                                 const std::string& explicit_id,
 454                                 int creation_flags,
 455                                 base::string16* error) {
 456   if (!explicit_id.empty()) {
 457     manifest->set_extension_id(explicit_id);
 458     return true;
 459   }
 460
 461   if (manifest->HasKey(keys::kPublicKey)) {
 462     std::string public_key;
 463     std::string public_key_bytes;
 464     if (!manifest->GetString(keys::kPublicKey, &public_key) ||
 465         !ParsePEMKeyBytes(public_key, &public_key_bytes)) {
 466       *error = base::ASCIIToUTF16(errors::kInvalidKey);
 467       return false;
 468     }
 469     std::string extension_id = id_util::GenerateId(public_key_bytes);
 470     manifest->set_extension_id(extension_id);
 471     return true;
 472   }
 473
 474   if (creation_flags & REQUIRE_KEY) {
 475     *error = base::ASCIIToUTF16(errors::kInvalidKey);
 476     return false;
 477   } else {
 478     // If there is a path, we generate the ID from it. This is useful for
 479     // development mode, because it keeps the ID stable across restarts and
 480     // reloading the extension.
 481     std::string extension_id = id_util::GenerateIdForPath(path);
 482     if (extension_id.empty()) {
 483       NOTREACHED() << "Could not create ID from path.";
 484       return false;
 485     }
 486     manifest->set_extension_id(extension_id);
 487     return true;
 488   }
 489 }
 490
 491 Extension::Extension(const base::FilePath& path,
 492                      scoped_ptr<extensions::Manifest> manifest)
 493     : manifest_version_(0),
 494       converted_from_user_script_(false),
 495       manifest_(manifest.release()),
 496       finished_parsing_manifest_(false),
 497       display_in_launcher_(true),
 498       display_in_new_tab_page_(true),
 499       wants_file_access_(false),
 500       creation_flags_(0) {
 501   DCHECK(path.empty() || path.IsAbsolute());
 502   path_ = id_util::MaybeNormalizePath(path);
 503 }
 504
 505 Extension::~Extension() {
 506 }
 507
 508 bool Extension::InitFromValue(int flags, base::string16* error) {
 509   DCHECK(error);
 510
 511   creation_flags_ = flags;
 512
 513   // Important to load manifest version first because many other features
 514   // depend on its value.
 515   if (!LoadManifestVersion(error))
 516     return false;
 517
 518   if (!LoadRequiredFeatures(error))
 519     return false;
 520
 521   // We don't need to validate because InitExtensionID already did that.
 522   manifest_->GetString(keys::kPublicKey, &public_key_);
 523
 524   extension_url_ = Extension::GetBaseURLFromExtensionId(id());
 525
 526   // Load App settings. LoadExtent at least has to be done before
 527   // ParsePermissions(), because the valid permissions depend on what type of
 528   // package this is.
 529   if (is_app() && !LoadAppFeatures(error))
 530     return false;
 531
 532   permissions_parser_.reset(new PermissionsParser());
 533   if (!permissions_parser_->Parse(this, error))
 534     return false;
 535
 536   if (manifest_->HasKey(keys::kConvertedFromUserScript)) {
 537     manifest_->GetBoolean(keys::kConvertedFromUserScript,
 538                           &converted_from_user_script_);
 539   }
 540
 541   if (!LoadSharedFeatures(error))
 542     return false;
 543
 544   permissions_parser_->Finalize(this);
 545   permissions_parser_.reset();
 546
 547   finished_parsing_manifest_ = true;
 548
 549   permissions_data_.reset(new PermissionsData(this));
 550
 551   return true;
 552 }
 553
 554 bool Extension::LoadRequiredFeatures(base::string16* error) {
 555   if (!LoadName(error) ||
 556       !LoadVersion(error))
 557     return false;
 558   return true;
 559 }
 560
 561 bool Extension::LoadName(base::string16* error) {
 562   base::string16 localized_name;
 563   if (!manifest_->GetString(keys::kName, &localized_name)) {
 564     *error = base::ASCIIToUTF16(errors::kInvalidName);
 565     return false;
 566   }
 567   non_localized_name_ = base::UTF16ToUTF8(localized_name);
 568   base::i18n::AdjustStringForLocaleDirection(&localized_name);
 569   name_ = base::UTF16ToUTF8(localized_name);
 570   return true;
 571 }
 572
 573 bool Extension::LoadVersion(base::string16* error) {
 574   std::string version_str;
 575   if (!manifest_->GetString(keys::kVersion, &version_str)) {
 576     *error = base::ASCIIToUTF16(errors::kInvalidVersion);
 577     return false;
 578   }
 579   version_.reset(new Version(version_str));
 580   if (!version_->IsValid() || version_->components().size() > 4) {
 581     *error = base::ASCIIToUTF16(errors::kInvalidVersion);
 582     return false;
 583   }
 584   return true;
 585 }
 586
 587 bool Extension::LoadAppFeatures(base::string16* error) {
 588   if (!LoadExtent(keys::kWebURLs, &extent_,
 589                   errors::kInvalidWebURLs, errors::kInvalidWebURL, error)) {
 590     return false;
 591   }
 592   if (manifest_->HasKey(keys::kDisplayInLauncher) &&
 593       !manifest_->GetBoolean(keys::kDisplayInLauncher, &display_in_launcher_)) {
 594     *error = base::ASCIIToUTF16(errors::kInvalidDisplayInLauncher);
 595     return false;
 596   }
 597   if (manifest_->HasKey(keys::kDisplayInNewTabPage)) {
 598     if (!manifest_->GetBoolean(keys::kDisplayInNewTabPage,
 599                                &display_in_new_tab_page_)) {
 600       *error = base::ASCIIToUTF16(errors::kInvalidDisplayInNewTabPage);
 601       return false;
 602     }
 603   } else {
 604     // Inherit default from display_in_launcher property.
 605     display_in_new_tab_page_ = display_in_launcher_;
 606   }
 607   return true;
 608 }
 609
 610 bool Extension::LoadExtent(const char* key,
 611                            URLPatternSet* extent,
 612                            const char* list_error,
 613                            const char* value_error,
 614                            base::string16* error) {
 615   const base::Value* temp_pattern_value = NULL;
 616   if (!manifest_->Get(key, &temp_pattern_value))
 617     return true;
 618
 619   const base::ListValue* pattern_list = NULL;
 620   if (!temp_pattern_value->GetAsList(&pattern_list)) {
 621     *error = base::ASCIIToUTF16(list_error);
 622     return false;
 623   }
 624
 625   for (size_t i = 0; i < pattern_list->GetSize(); ++i) {
 626     std::string pattern_string;
 627     if (!pattern_list->GetString(i, &pattern_string)) {
 628       *error = ErrorUtils::FormatErrorMessageUTF16(value_error,
 629                                                    base::UintToString(i),
 630                                                    errors::kExpectString);
 631       return false;
 632     }
 633
 634     URLPattern pattern(kValidWebExtentSchemes);
 635     URLPattern::ParseResult parse_result = pattern.Parse(pattern_string);
 636     if (parse_result == URLPattern::PARSE_ERROR_EMPTY_PATH) {
 637       pattern_string += "/";
 638       parse_result = pattern.Parse(pattern_string);
 639     }
 640
 641     if (parse_result != URLPattern::PARSE_SUCCESS) {
 642       *error = ErrorUtils::FormatErrorMessageUTF16(
 643           value_error,
 644           base::UintToString(i),
 645           URLPattern::GetParseResultString(parse_result));
 646       return false;
 647     }
 648
 649     // Do not allow authors to claim "<all_urls>".
 650     if (pattern.match_all_urls()) {
 651       *error = ErrorUtils::FormatErrorMessageUTF16(
 652           value_error,
 653           base::UintToString(i),
 654           errors::kCannotClaimAllURLsInExtent);
 655       return false;
 656     }
 657
 658     // Do not allow authors to claim "*" for host.
 659     if (pattern.host().empty()) {
 660       *error = ErrorUtils::FormatErrorMessageUTF16(
 661           value_error,
 662           base::UintToString(i),
 663           errors::kCannotClaimAllHostsInExtent);
 664       return false;
 665     }
 666
 667     // We do not allow authors to put wildcards in their paths. Instead, we
 668     // imply one at the end.
 669     if (pattern.path().find('*') != std::string::npos) {
 670       *error = ErrorUtils::FormatErrorMessageUTF16(
 671           value_error,
 672           base::UintToString(i),
 673           errors::kNoWildCardsInPaths);
 674       return false;
 675     }
 676     pattern.SetPath(pattern.path() + '*');
 677
 678     extent->AddPattern(pattern);
 679   }
 680
 681   return true;
 682 }
 683
 684 bool Extension::LoadSharedFeatures(base::string16* error) {
 685   if (!LoadDescription(error) ||
 686       !ManifestHandler::ParseExtension(this, error) ||
 687       !LoadShortName(error))
 688     return false;
 689
 690   return true;
 691 }
 692
 693 bool Extension::LoadDescription(base::string16* error) {
 694   if (manifest_->HasKey(keys::kDescription) &&
 695       !manifest_->GetString(keys::kDescription, &description_)) {
 696     *error = base::ASCIIToUTF16(errors::kInvalidDescription);
 697     return false;
 698   }
 699   return true;
 700 }
 701
 702 bool Extension::LoadManifestVersion(base::string16* error) {
 703   // Get the original value out of the dictionary so that we can validate it
 704   // more strictly.
 705   if (manifest_->value()->HasKey(keys::kManifestVersion)) {
 706     int manifest_version = 1;
 707     if (!manifest_->GetInteger(keys::kManifestVersion, &manifest_version) ||
 708         manifest_version < 1) {
 709       *error = base::ASCIIToUTF16(errors::kInvalidManifestVersion);
 710       return false;
 711     }
 712   }
 713
 714   manifest_version_ = manifest_->GetManifestVersion();
 715   if (manifest_version_ < kModernManifestVersion &&
 716       ((creation_flags_ & REQUIRE_MODERN_MANIFEST_VERSION &&
 717         !CommandLine::ForCurrentProcess()->HasSwitch(
 718             switches::kAllowLegacyExtensionManifests)) ||
 719        GetType() == Manifest::TYPE_PLATFORM_APP)) {
 720     *error = ErrorUtils::FormatErrorMessageUTF16(
 721         errors::kInvalidManifestVersionOld,
 722         base::IntToString(kModernManifestVersion),
 723         is_platform_app() ? "apps" : "extensions");
 724     return false;
 725   }
 726
 727   return true;
 728 }
 729
 730 bool Extension::LoadShortName(base::string16* error) {
 731   if (manifest_->HasKey(keys::kShortName)) {
 732     base::string16 localized_short_name;
 733     if (!manifest_->GetString(keys::kShortName, &localized_short_name) ||
 734         localized_short_name.empty()) {
 735       *error = base::ASCIIToUTF16(errors::kInvalidShortName);
 736       return false;
 737     }
 738
 739     base::i18n::AdjustStringForLocaleDirection(&localized_short_name);
 740     short_name_ = base::UTF16ToUTF8(localized_short_name);
 741   } else {
 742     short_name_ = name_;
 743   }
 744   return true;
 745 }
 746
 747 ExtensionInfo::ExtensionInfo(const base::DictionaryValue* manifest,
 748                              const std::string& id,
 749                              const base::FilePath& path,
 750                              Manifest::Location location)
 751     : extension_id(id),
 752       extension_path(path),
 753       extension_location(location) {
 754   if (manifest)
 755     extension_manifest.reset(manifest->DeepCopy());
 756 }
 757
 758 ExtensionInfo::~ExtensionInfo() {}
 759
 760 InstalledExtensionInfo::InstalledExtensionInfo(
 761     const Extension* extension,
 762     bool is_update,
 763     bool from_ephemeral,
 764     const std::string& old_name)
 765     : extension(extension),
 766       is_update(is_update),
 767       from_ephemeral(from_ephemeral),
 768       old_name(old_name) {}
 769
 770 UnloadedExtensionInfo::UnloadedExtensionInfo(
 771     const Extension* extension,
 772     UnloadedExtensionInfo::Reason reason)
 773     : reason(reason),
 774       extension(extension) {}
 775
 776 UpdatedExtensionPermissionsInfo::UpdatedExtensionPermissionsInfo(
 777     const Extension* extension,
 778     const PermissionSet* permissions,
 779     Reason reason)
 780     : reason(reason),
 781       extension(extension),
 782       permissions(permissions) {}
 783
 784 }   // namespace extensions