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 void InfoMap::GetExtensionsWithAPIPermissionForSecurityOrigin(
 133     const GURL& origin,
 134     int process_id,
 135     APIPermission::ID permission,
 136     ExtensionSet* extensions) const {
 137   DCHECK(extensions);
 138
 139   if (origin.SchemeIs(kExtensionScheme)) {
 140     const std::string& id = origin.host();
 141     const Extension* extension = extensions_.GetByID(id);
 142     if (extension &&
 143         extension->permissions_data()->HasAPIPermission(permission) &&
 144         process_map_.Contains(id, process_id)) {
 145       extensions->Insert(extension);
 146     }
 147     return;
 148   }
 149
 150   ExtensionSet::const_iterator i = extensions_.begin();
 151   for (; i != extensions_.end(); ++i) {
 152     if ((*i)->web_extent().MatchesSecurityOrigin(origin) &&
 153         process_map_.Contains((*i)->id(), process_id) &&
 154         (*i)->permissions_data()->HasAPIPermission(permission)) {
 155       extensions->Insert(*i);
 156     }
 157   }
 158 }
 159
 160 bool InfoMap::SecurityOriginHasAPIPermission(const GURL& origin,
 161                                              int process_id,
 162                                              APIPermission::ID permission)
 163     const {
 164   ExtensionSet extensions;
 165   GetExtensionsWithAPIPermissionForSecurityOrigin(
 166       origin, process_id, permission, &extensions);
 167   return !extensions.is_empty();
 168 }
 169
 170 // This function is security sensitive. Bugs could cause problems that break
 171 // restrictions on local file access or NaCl's validation caching. If you modify
 172 // this function, please get a security review from a NaCl person.
 173 bool InfoMap::MapUrlToLocalFilePath(const GURL& file_url,
 174                                     bool use_blocking_api,
 175                                     base::FilePath* file_path) {
 176   // Check that the URL is recognized by the extension system.
 177   const Extension* extension = extensions_.GetExtensionOrAppByURL(file_url);
 178   if (!extension)
 179     return false;
 180
 181   // This is a short-cut which avoids calling a blocking file operation
 182   // (GetFilePath()), so that this can be called on the IO thread. It only
 183   // handles a subset of the urls.
 184   if (!use_blocking_api) {
 185     if (file_url.SchemeIs(extensions::kExtensionScheme)) {
 186       std::string path = file_url.path();
 187       base::TrimString(path, "/", &path);  // Remove first slash
 188       *file_path = extension->path().AppendASCII(path);
 189       return true;
 190     }
 191     return false;
 192   }
 193
 194   std::string path = file_url.path();
 195   ExtensionResource resource;
 196
 197   if (SharedModuleInfo::IsImportedPath(path)) {
 198     // Check if this is a valid path that is imported for this extension.
 199     std::string new_extension_id;
 200     std::string new_relative_path;
 201     SharedModuleInfo::ParseImportedPath(
 202         path, &new_extension_id, &new_relative_path);
 203     const Extension* new_extension = extensions_.GetByID(new_extension_id);
 204     if (!new_extension)
 205       return false;
 206
 207     if (!SharedModuleInfo::ImportsExtensionById(extension, new_extension_id))
 208       return false;
 209
 210     resource = new_extension->GetResource(new_relative_path);
 211   } else {
 212     // Check that the URL references a resource in the extension.
 213     resource = extension->GetResource(path);
 214   }
 215
 216   if (resource.empty())
 217     return false;
 218
 219   // GetFilePath is a blocking function call.
 220   const base::FilePath resource_file_path = resource.GetFilePath();
 221   if (resource_file_path.empty())
 222     return false;
 223
 224   *file_path = resource_file_path;
 225   return true;
 226 }
 227
 228 QuotaService* InfoMap::GetQuotaService() {
 229   CheckOnValidThread();
 230   if (!quota_service_)
 231     quota_service_.reset(new QuotaService());
 232   return quota_service_.get();
 233 }
 234
 235 void InfoMap::SetNotificationsDisabled(
 236     const std::string& extension_id,
 237     bool notifications_disabled) {
 238   ExtraDataMap::iterator iter = extra_data_.find(extension_id);
 239   if (iter != extra_data_.end())
 240     iter->second.notifications_disabled = notifications_disabled;
 241 }
 242
 243 bool InfoMap::AreNotificationsDisabled(
 244     const std::string& extension_id) const {
 245   ExtraDataMap::const_iterator iter = extra_data_.find(extension_id);
 246   if (iter != extra_data_.end())
 247     return iter->second.notifications_disabled;
 248   return false;
 249 }
 250
 251 void InfoMap::SetContentVerifier(ContentVerifier* verifier) {
 252   content_verifier_ = verifier;
 253 }
 254
 255 InfoMap::~InfoMap() {
 256   if (quota_service_) {
 257     BrowserThread::DeleteSoon(
 258         BrowserThread::IO, FROM_HERE, quota_service_.release());
 259   }
 260 }
 261
 262 }  // namespace extensions