extensions/browser/info_map.cc

   1 // Copyright 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/browser/info_map.h"
   6
   7 #include "base/strings/string_util.h"
   8 #include "content/public/browser/browser_thread.h"
   9 #include "extensions/browser/content_verifier.h"
  10 #include "extensions/common/constants.h"
  11 #include "extensions/common/extension.h"
  12 #include "extensions/common/extension_resource.h"
  13 #include "extensions/common/extension_set.h"
  14 #include "extensions/common/manifest_handlers/incognito_info.h"
  15 #include "extensions/common/manifest_handlers/shared_module_info.h"
  16 #include "extensions/common/permissions/permissions_data.h"
  17 #include "url/gurl.h"
  18
  19 using content::BrowserThread;
  20
  21 namespace extensions {
  22
  23 namespace {
  24
  25 void CheckOnValidThread() { DCHECK_CURRENTLY_ON(BrowserThread::IO); }
  26
  27 }  // namespace
  28
  29 struct InfoMap::ExtraData {
  30   // When the extension was installed.
  31   base::Time install_time;
  32
  33   // True if the user has allowed this extension to run in incognito mode.
  34   bool incognito_enabled;
  35
  36   // True if the user has disabled notifications for this extension manually.
  37   bool notifications_disabled;
  38
  39   ExtraData();
  40   ~ExtraData();
  41 };
  42
  43 InfoMap::ExtraData::ExtraData()
  44     : incognito_enabled(false), notifications_disabled(false) {
  45 }
  46
  47 InfoMap::ExtraData::~ExtraData() {}
  48
  49 InfoMap::InfoMap() {
  50 }
  51
  52 void InfoMap::AddExtension(const Extension* extension,
  53                            base::Time install_time,
  54                            bool incognito_enabled,
  55                            bool notifications_disabled) {
  56   CheckOnValidThread();
  57   extensions_.Insert(extension);
  58   disabled_extensions_.Remove(extension->id());
  59
  60   extra_data_[extension->id()].install_time = install_time;
  61   extra_data_[extension->id()].incognito_enabled = incognito_enabled;
  62   extra_data_[extension->id()].notifications_disabled = notifications_disabled;
  63 }
  64
  65 void InfoMap::RemoveExtension(const std::string& extension_id,
  66                               const UnloadedExtensionInfo::Reason reason) {
  67   CheckOnValidThread();
  68   const Extension* extension = extensions_.GetByID(extension_id);
  69   extra_data_.erase(extension_id);  // we don't care about disabled extra data
  70   bool was_uninstalled = (reason != UnloadedExtensionInfo::REASON_DISABLE &&
  71                           reason != UnloadedExtensionInfo::REASON_TERMINATE);
  72   if (extension) {
  73     if (!was_uninstalled)
  74       disabled_extensions_.Insert(extension);
  75     extensions_.Remove(extension_id);
  76   } else if (was_uninstalled) {
  77     // If the extension was uninstalled, make sure it's removed from the map of
  78     // disabled extensions.
  79     disabled_extensions_.Remove(extension_id);
  80   } else {
  81     // NOTE: This can currently happen if we receive multiple unload
  82     // notifications, e.g. setting incognito-enabled state for a
  83     // disabled extension (e.g., via sync).  See
  84     // http://code.google.com/p/chromium/issues/detail?id=50582 .
  85     NOTREACHED() << extension_id;
  86   }
  87 }
  88
  89 base::Time InfoMap::GetInstallTime(const std::string& extension_id) const {
  90   ExtraDataMap::const_iterator iter = extra_data_.find(extension_id);
  91   if (iter != extra_data_.end())
  92     return iter->second.install_time;
  93   return base::Time();
  94 }
  95
  96 bool InfoMap::IsIncognitoEnabled(const std::string& extension_id) const {
  97   // Keep in sync with duplicate in extensions/browser/process_manager.cc.
  98   ExtraDataMap::const_iterator iter = extra_data_.find(extension_id);
  99   if (iter != extra_data_.end())
 100     return iter->second.incognito_enabled;
 101   return false;
 102 }
 103
 104 bool InfoMap::CanCrossIncognito(const Extension* extension) const {
 105   // This is duplicated from ExtensionService :(.
 106   return IsIncognitoEnabled(extension->id()) &&
 107          !IncognitoInfo::IsSplitMode(extension);
 108 }
 109
 110 void InfoMap::RegisterExtensionProcess(const std::string& extension_id,
 111                                        int process_id,
 112                                        int site_instance_id) {
 113   if (!process_map_.Insert(extension_id, process_id, site_instance_id)) {
 114     NOTREACHED() << "Duplicate extension process registration for: "
 115                  << extension_id << "," << process_id << ".";
 116   }
 117 }
 118
 119 void InfoMap::UnregisterExtensionProcess(const std::string& extension_id,
 120                                          int process_id,
 121                                          int site_instance_id) {
 122   if (!process_map_.Remove(extension_id, process_id, site_instance_id)) {
 123     NOTREACHED() << "Unknown extension process registration for: "
 124                  << extension_id << "," << process_id << ".";
 125   }
 126 }
 127
 128 void InfoMap::UnregisterAllExtensionsInProcess(int process_id) {
 129   process_map_.RemoveAllFromProcess(process_id);
 130 }
 131
 132 bool InfoMap::SecurityOriginHasAPIPermission(
 133     const GURL& origin,
 134     int process_id,
 135     APIPermission::ID permission) const {
 136   CheckOnValidThread();
 137   if (origin.SchemeIs(kExtensionScheme)) {
 138     const std::string& id = origin.host();
 139     const Extension* extension = extensions_.GetByID(id);
 140     return extension &&
 141            extension->permissions_data()->HasAPIPermission(permission) &&
 142            process_map_.Contains(id, process_id);
 143   }
 144   for (const auto& extension : extensions_) {
 145     if (extension->web_extent().MatchesSecurityOrigin(origin) &&
 146         extension->permissions_data()->HasAPIPermission(permission) &&
 147         process_map_.Contains(extension->id(), process_id)) {
 148       return true;
 149     }
 150   }
 151   return false;
 152 }
 153
 154 // This function is security sensitive. Bugs could cause problems that break
 155 // restrictions on local file access or NaCl's validation caching. If you modify
 156 // this function, please get a security review from a NaCl person.
 157 bool InfoMap::MapUrlToLocalFilePath(const GURL& file_url,
 158                                     bool use_blocking_api,
 159                                     base::FilePath* file_path) {
 160   // Check that the URL is recognized by the extension system.
 161   const Extension* extension = extensions_.GetExtensionOrAppByURL(file_url);
 162   if (!extension)
 163     return false;
 164
 165   // This is a short-cut which avoids calling a blocking file operation
 166   // (GetFilePath()), so that this can be called on the IO thread. It only
 167   // handles a subset of the urls.
 168   if (!use_blocking_api) {
 169     if (file_url.SchemeIs(extensions::kExtensionScheme)) {
 170       std::string path = file_url.path();
 171       base::TrimString(path, "/", &path);  // Remove first slash
 172       *file_path = extension->path().AppendASCII(path);
 173       return true;
 174     }
 175     return false;
 176   }
 177
 178   std::string path = file_url.path();
 179   ExtensionResource resource;
 180
 181   if (SharedModuleInfo::IsImportedPath(path)) {
 182     // Check if this is a valid path that is imported for this extension.
 183     std::string new_extension_id;
 184     std::string new_relative_path;
 185     SharedModuleInfo::ParseImportedPath(
 186         path, &new_extension_id, &new_relative_path);
 187     const Extension* new_extension = extensions_.GetByID(new_extension_id);
 188     if (!new_extension)
 189       return false;
 190
 191     if (!SharedModuleInfo::ImportsExtensionById(extension, new_extension_id))
 192       return false;
 193
 194     resource = new_extension->GetResource(new_relative_path);
 195   } else {
 196     // Check that the URL references a resource in the extension.
 197     resource = extension->GetResource(path);
 198   }
 199
 200   if (resource.empty())
 201     return false;
 202
 203   // GetFilePath is a blocking function call.
 204   const base::FilePath resource_file_path = resource.GetFilePath();
 205   if (resource_file_path.empty())
 206     return false;
 207
 208   *file_path = resource_file_path;
 209   return true;
 210 }
 211
 212 QuotaService* InfoMap::GetQuotaService() {
 213   CheckOnValidThread();
 214   if (!quota_service_)
 215     quota_service_.reset(new QuotaService());
 216   return quota_service_.get();
 217 }
 218
 219 void InfoMap::SetNotificationsDisabled(
 220     const std::string& extension_id,
 221     bool notifications_disabled) {
 222   ExtraDataMap::iterator iter = extra_data_.find(extension_id);
 223   if (iter != extra_data_.end())
 224     iter->second.notifications_disabled = notifications_disabled;
 225 }
 226
 227 bool InfoMap::AreNotificationsDisabled(
 228     const std::string& extension_id) const {
 229   ExtraDataMap::const_iterator iter = extra_data_.find(extension_id);
 230   if (iter != extra_data_.end())
 231     return iter->second.notifications_disabled;
 232   return false;
 233 }
 234
 235 void InfoMap::SetContentVerifier(ContentVerifier* verifier) {
 236   content_verifier_ = verifier;
 237 }
 238
 239 InfoMap::~InfoMap() {
 240   if (quota_service_) {
 241     BrowserThread::DeleteSoon(
 242         BrowserThread::IO, FROM_HERE, quota_service_.release());
 243   }
 244 }
 245
 246 }  // namespace extensions