chrome/browser/supervised_user/supervised_user_site_list.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_SUPERVISED_USER_SITE_LIST_H_
   6 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SITE_LIST_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/callback_forward.h"
  12 #include "base/files/file_path.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/time/time.h"
  16
  17 class Profile;
  18
  19 namespace base {
  20 class DictionaryValue;
  21 class ListValue;
  22 class Value;
  23 }
  24
  25 // This class represents a "site list" that is part of a content pack. It is
  26 // loaded from a JSON file inside the extension bundle, which defines the sites
  27 // on the list.
  28 // Every site has -- among other attributes -- a whitelist of URLs that are
  29 // required to use it. All sites from all installed content packs together with
  30 // their respective whitelists are combined in the SupervisedUserURLFilter,
  31 // which can tell for a given URL if it is part of the whitelist for any site.
  32 // Effectively, SupervisedUserURLFilter then acts as a big whitelist which is
  33 // the union of the whitelists in all sites in all content packs. See
  34 // http://goo.gl/cBCB8 for a diagram.
  35 class SupervisedUserSiteList
  36     : public base::RefCountedThreadSafe<SupervisedUserSiteList> {
  37  public:
  38   typedef base::Callback<void(const scoped_refptr<SupervisedUserSiteList>&)>
  39       LoadedCallback;
  40
  41   struct Site {
  42     explicit Site(const base::string16& name);
  43     ~Site();
  44
  45     // The human-readable name for the site.
  46     base::string16 name;
  47
  48     // A list of URL patterns that should be whitelisted for the site.
  49     std::vector<std::string> patterns;
  50
  51     // A list of hex-encoded SHA1 hashes of hostnames that should be whitelisted
  52     // for the site.
  53     std::vector<std::string> hostname_hashes;
  54
  55     // Copying and assignment is allowed.
  56   };
  57
  58   // Asynchronously loads the site list from |file| and calls |callback| with
  59   // the newly created object.
  60   static void Load(const base::FilePath& file, const LoadedCallback& callback);
  61
  62   // Returns a list of all sites in this site list.
  63   const std::vector<Site>& sites() const { return sites_; }
  64
  65  private:
  66   friend class base::RefCountedThreadSafe<SupervisedUserSiteList>;
  67
  68   explicit SupervisedUserSiteList(const base::ListValue& sites);
  69   ~SupervisedUserSiteList();
  70
  71   // Static private so they can access the private constructor.
  72   static void ParseJson(const base::FilePath& path,
  73                         const SupervisedUserSiteList::LoadedCallback& callback,
  74                         const std::string& json);
  75   static void OnJsonParseSucceeded(
  76       const base::FilePath& path,
  77       base::TimeTicks start_time,
  78       const SupervisedUserSiteList::LoadedCallback& callback,
  79       scoped_ptr<base::Value> value);
  80
  81   std::vector<Site> sites_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(SupervisedUserSiteList);
  84 };
  85
  86 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SITE_LIST_H_