src/chrome/browser/supervised_user/experimental/supervised_user_blacklist.h

   1 // Copyright 2014 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_SUPERVISED_USER_EXPERIMENTAL_SUPERVISED_USER_BLACKLIST_H_
   6 #define CHROME_BROWSER_SUPERVISED_USER_EXPERIMENTAL_SUPERVISED_USER_BLACKLIST_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/callback_forward.h"
  12 #include "base/macros.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/sha1.h"
  16
  17 namespace base {
  18 class FilePath;
  19 }
  20
  21 class GURL;
  22
  23 // Compact list of (SHA1 hashes of) blocked hosts.
  24 // Checking for URLs is thread-safe, loading is not.
  25 class SupervisedUserBlacklist {
  26  public:
  27   struct Hash {
  28     Hash() {}
  29     explicit Hash(const std::string& host);
  30     bool operator<(const Hash& rhs) const;
  31
  32     unsigned char data[base::kSHA1Length];
  33   };
  34
  35   SupervisedUserBlacklist();
  36   ~SupervisedUserBlacklist();
  37
  38   // Asynchronously read a blacklist from the given file, replacing any previous
  39   // entries. |done_callback| will be run after reading finishes (successfully
  40   // or not), but not if the SupervisedUserBlacklist is destroyed before that.
  41   void ReadFromFile(const base::FilePath& path,
  42                     const base::Closure& done_callback);
  43
  44   bool HasURL(const GURL& url) const;
  45
  46   size_t GetEntryCount() const;
  47
  48  private:
  49   void OnReadFromFileCompleted(const base::Closure& done_callback,
  50                                scoped_ptr<std::vector<Hash> > host_hashes);
  51
  52   std::vector<Hash> host_hashes_;
  53
  54   base::WeakPtrFactory<SupervisedUserBlacklist> weak_ptr_factory_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(SupervisedUserBlacklist);
  57 };
  58
  59 #endif  // CHROME_BROWSER_SUPERVISED_USER_EXPERIMENTAL_SUPERVISED_USER_BLACKLIST_H_