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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 #ifndef CHROME_BROWSER_NET_CRL_SET_FETCHER_H_
      6 #define CHROME_BROWSER_NET_CRL_SET_FETCHER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/files/file_path.h"
     12 #include "base/memory/ref_counted.h"
     13 #include "components/component_updater/component_updater_service.h"
     14 
     15 namespace base {
     16 class DictionaryValue;
     17 class FilePath;
     18 }
     19 
     20 namespace net {
     21 class CRLSet;
     22 }
     23 
     24 class CRLSetFetcher : public component_updater::ComponentInstaller,
     25                       public base::RefCountedThreadSafe<CRLSetFetcher> {
     26  public:
     27   CRLSetFetcher();
     28 
     29   void StartInitialLoad(component_updater::ComponentUpdateService* cus,
     30                         const base::FilePath& path);
     31 
     32   // DeleteFromDisk asynchronously delete the CRLSet file.
     33   void DeleteFromDisk(const base::FilePath& path);
     34 
     35   // ComponentInstaller interface
     36   virtual void OnUpdateError(int error) OVERRIDE;
     37   virtual bool Install(const base::DictionaryValue& manifest,
     38                        const base::FilePath& unpack_path) OVERRIDE;
     39   virtual bool GetInstalledFile(const std::string& file,
     40                                 base::FilePath* installed_file) OVERRIDE;
     41 
     42  private:
     43   friend class base::RefCountedThreadSafe<CRLSetFetcher>;
     44 
     45   virtual ~CRLSetFetcher();
     46 
     47   // GetCRLSetbase::FilePath gets the path of the CRL set file in the user data
     48   // dir.
     49   base::FilePath GetCRLSetFilePath() const;
     50 
     51   // Sets the path of the CRL set file in the user data dir.
     52   void SetCRLSetFilePath(const base::FilePath& path);
     53 
     54   // DoInitialLoadFromDisk runs on the FILE thread and attempts to load a CRL
     55   // set from the user-data dir. It then registers this object as a component
     56   // in order to get updates.
     57   void DoInitialLoadFromDisk();
     58 
     59   // LoadFromDisk runs on the FILE thread and attempts to load a CRL set
     60   // from |load_from|.
     61   void LoadFromDisk(base::FilePath load_from,
     62                     scoped_refptr<net::CRLSet>* out_crl_set);
     63 
     64   // SetCRLSetIfNewer runs on the IO thread and installs a CRL set
     65   // as the global CRL set if it's newer than the existing one.
     66   void SetCRLSetIfNewer(scoped_refptr<net::CRLSet> crl_set);
     67 
     68   // RegisterComponent registers this object as a component updater.
     69   void RegisterComponent(uint32 sequence_of_loaded_crl);
     70 
     71   // DoDeleteFromDisk runs on the FILE thread and removes the CRLSet file from
     72   // the disk.
     73   void DoDeleteFromDisk();
     74 
     75   component_updater::ComponentUpdateService* cus_;
     76 
     77   // Path where the CRL file is stored.
     78   base::FilePath crl_path_;
     79 
     80   // We keep a pointer to the current CRLSet for use on the FILE thread when
     81   // applying delta updates.
     82   scoped_refptr<net::CRLSet> crl_set_;
     83 
     84   DISALLOW_COPY_AND_ASSIGN(CRLSetFetcher);
     85 };
     86 
     87 #endif  // CHROME_BROWSER_NET_CRL_SET_FETCHER_H_
     88