chrome/renderer/plugins/plugin_uma.h

   1 // Copyright (c) 2011 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_RENDERER_PLUGINS_PLUGIN_UMA_H_
   6 #define CHROME_RENDERER_PLUGINS_PLUGIN_UMA_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/singleton.h"
  12 #include "url/gurl.h"
  13
  14 // Used to send UMA data about missing plugins to UMA histogram server. Method
  15 // ReportPluginMissing should be called whenever plugin that is not available or
  16 // enabled is called. We try to determine plugin's type by requested mime type,
  17 // or, if mime type is unknown, by plugin's src url.
  18 class PluginUMAReporter {
  19  public:
  20   enum ReportType {
  21     MISSING_PLUGIN,
  22     DISABLED_PLUGIN
  23   };
  24
  25   // Make sure the enum list in tools/histogram/histograms.xml is updated with
  26   // any change in this list.
  27   enum PluginType {
  28     WINDOWS_MEDIA_PLAYER = 0,
  29     SILVERLIGHT = 1,
  30     REALPLAYER = 2,
  31     JAVA = 3,
  32     QUICKTIME = 4,
  33     OTHER = 5,  // This is obsolete and replaced by UNSUPPORTED_* types.
  34     UNSUPPORTED_MIMETYPE,
  35     UNSUPPORTED_EXTENSION,
  36     // NOTE: Add new unsupported types only immediately above this line.
  37     BROWSER_PLUGIN = 10,
  38     SHOCKWAVE_FLASH,
  39     WIDEVINE_CDM,
  40     // NOTE: Add new plugin types only immediately above this line.
  41     PLUGIN_TYPE_MAX
  42   };
  43
  44   // Sends UMA data, i.e. plugin's type.
  45   class UMASender {
  46    public:
  47     virtual ~UMASender() {}
  48     virtual void SendPluginUMA(ReportType report_type,
  49                                PluginType plugin_type) = 0;
  50   };
  51
  52   // Returns singleton instance.
  53   static PluginUMAReporter* GetInstance();
  54
  55   void ReportPluginMissing(const std::string& plugin_mime_type,
  56                            const GURL& plugin_src);
  57
  58   void ReportPluginDisabled(const std::string& plugin_mime_type,
  59                             const GURL& plugin_src);
  60
  61  private:
  62   friend struct DefaultSingletonTraits<PluginUMAReporter>;
  63   friend class PluginUMATest;
  64
  65   PluginUMAReporter();
  66   ~PluginUMAReporter();
  67
  68   static bool CompareCStrings(const char* first, const char* second);
  69   bool CStringArrayContainsCString(const char* const* array,
  70                                    size_t array_size,
  71                                    const char* str);
  72   // Extracts file extension from url.
  73   void ExtractFileExtension(const GURL& src, std::string* extension);
  74
  75   PluginType GetPluginType(const std::string& plugin_mime_type,
  76                            const GURL& plugin_src);
  77
  78   // Converts plugin's src to plugin type.
  79   PluginType SrcToPluginType(const GURL& src);
  80   // Converts plugin's mime type to plugin type.
  81   PluginType MimeTypeToPluginType(const std::string& mime_type);
  82
  83   scoped_ptr<UMASender> report_sender_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(PluginUMAReporter);
  86 };
  87
  88 #endif  // CHROME_RENDERER_PLUGINS_PLUGIN_UMA_H_