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      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 "chrome/browser/browsing_data/browsing_data_flash_lso_helper.h"
      6 
      7 #include <limits>
      8 #include <map>
      9 
     10 #include "base/callback.h"
     11 #include "base/logging.h"
     12 #include "chrome/browser/pepper_flash_settings_manager.h"
     13 
     14 namespace {
     15 
     16 class BrowsingDataFlashLSOHelperImpl
     17     : public BrowsingDataFlashLSOHelper,
     18       public PepperFlashSettingsManager::Client {
     19  public:
     20   explicit BrowsingDataFlashLSOHelperImpl(
     21       content::BrowserContext* browser_context);
     22 
     23   // BrowsingDataFlashLSOHelper implementation:
     24   virtual void StartFetching(
     25       const GetSitesWithFlashDataCallback& callback) OVERRIDE;
     26   virtual void DeleteFlashLSOsForSite(const std::string& site) OVERRIDE;
     27 
     28   // PepperFlashSettingsManager::Client overrides:
     29   virtual void OnGetSitesWithDataCompleted(
     30       uint32 request_id,
     31       const std::vector<std::string>& sites) OVERRIDE;
     32   virtual void OnClearSiteDataCompleted(
     33       uint32 request_id,
     34       bool success) OVERRIDE;
     35 
     36  private:
     37   virtual ~BrowsingDataFlashLSOHelperImpl();
     38 
     39   // Asynchronously fetches and deletes data and calls us back.
     40   PepperFlashSettingsManager settings_manager_;
     41 
     42   // Identifies the request to fetch site data.
     43   uint32 get_sites_with_data_request_id_;
     44 
     45   // Contains the pending requests to clear site data. The key is the request
     46   // ID, the value the site for which to clear data.
     47   std::map<uint32, std::string> clear_site_data_ids_;
     48 
     49   // Called when we have fetched the list of sites.
     50   GetSitesWithFlashDataCallback callback_;
     51 
     52   DISALLOW_COPY_AND_ASSIGN(BrowsingDataFlashLSOHelperImpl);
     53 };
     54 
     55 BrowsingDataFlashLSOHelperImpl::BrowsingDataFlashLSOHelperImpl(
     56     content::BrowserContext* browser_context)
     57     : settings_manager_(this, browser_context),
     58       get_sites_with_data_request_id_(0u) {
     59 }
     60 
     61 BrowsingDataFlashLSOHelperImpl::~BrowsingDataFlashLSOHelperImpl() {
     62 }
     63 
     64 void BrowsingDataFlashLSOHelperImpl::StartFetching(
     65     const GetSitesWithFlashDataCallback& callback) {
     66   DCHECK(callback_.is_null());
     67   callback_ = callback;
     68   get_sites_with_data_request_id_ = settings_manager_.GetSitesWithData();
     69 }
     70 
     71 void BrowsingDataFlashLSOHelperImpl::DeleteFlashLSOsForSite(
     72     const std::string& site) {
     73   const uint64 kClearAllData = 0;
     74   uint32 id = settings_manager_.ClearSiteData(
     75       site, kClearAllData, std::numeric_limits<uint64>::max());
     76   clear_site_data_ids_[id] = site;
     77 }
     78 
     79 void BrowsingDataFlashLSOHelperImpl::OnGetSitesWithDataCompleted(
     80     uint32 request_id,
     81     const std::vector<std::string>& sites) {
     82   DCHECK_EQ(get_sites_with_data_request_id_, request_id);
     83   callback_.Run(sites);
     84   callback_ = GetSitesWithFlashDataCallback();
     85 }
     86 
     87 void BrowsingDataFlashLSOHelperImpl::OnClearSiteDataCompleted(uint32 request_id,
     88                                                               bool success) {
     89   std::map<uint32, std::string>::iterator entry =
     90       clear_site_data_ids_.find(request_id);
     91   DCHECK(entry != clear_site_data_ids_.end());
     92   LOG_IF(ERROR, !success) << "Couldn't clear Flash LSO data for "
     93                           << entry->second;
     94   clear_site_data_ids_.erase(entry);
     95 }
     96 
     97 }  // namespace
     98 
     99 // static
    100 BrowsingDataFlashLSOHelper* BrowsingDataFlashLSOHelper::Create(
    101     content::BrowserContext* browser_context) {
    102   return new BrowsingDataFlashLSOHelperImpl(browser_context);
    103 }
    104