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plugin_group.h

// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_COMMON_PLUGIN_GROUP_H_
#define CHROME_COMMON_PLUGIN_GROUP_H_

#include <set>
#include <vector>

#include "base/linked_ptr.h"
#include "base/scoped_ptr.h"
#include "base/string16.h"
#include "base/version.h"
#include "webkit/glue/plugins/webplugininfo.h"

class DictionaryValue;

// Hard-coded definitions of plugin groups.
struct PluginGroupDefinition {
  const char* name;  // Name of this group.
  const char* name_matcher;  // Substring matcher for the plugin name.
  const char* version_matcher_low;  // Matchers for the plugin version.
  const char* version_matcher_high;
  const char* min_version;  // Minimum secure version.
  const char* update_url;  // Location of latest secure version.
};


// A PluginGroup contains at least one WebPluginInfo.
// In addition, it knows if the plugin is critically vulnerable.
class PluginGroup {
 public:
  // Creates a PluginGroup from a PluginGroupDefinition.
  static PluginGroup* FromPluginGroupDefinition(
      const PluginGroupDefinition& definition);

  // Creates a PluginGroup from a WebPluginInfo -- when no hard-coded
  // definition is found.
  static PluginGroup* FromWebPluginInfo(const WebPluginInfo& wpi);

  // Find a plugin group matching |info| in the list of hardcoded plugins.
  static PluginGroup* FindHardcodedPluginGroup(const WebPluginInfo& info);

  // Configures the set of plugin names that are disabled by policy.
  static void SetPolicyDisabledPluginSet(const std::set<string16>& set);

  // Tests to see if a plugin is on the blacklist using its name as
  // the lookup key.
  static bool IsPluginNameDisabledByPolicy(const string16& plugin_name);

  // Tests to see if a plugin is on the blacklist using its path as
  // the lookup key.
  static bool IsPluginPathDisabledByPolicy(const FilePath& plugin_path);

  // Find the PluginGroup matching a Plugin in a list of plugin groups. Returns
  // NULL if no matching PluginGroup is found.
  static PluginGroup* FindGroupMatchingPlugin(
      std::vector<linked_ptr<PluginGroup> >& plugin_groups,
      const WebPluginInfo& plugin);

  // Creates a copy of this plugin group.
  PluginGroup* Copy() {
    return new PluginGroup(group_name_, name_matcher_, version_range_low_str_,
                           version_range_high_str_, min_version_str_,
                           update_url_);
  }

  // Returns true if the given plugin matches this group.
  bool Match(const WebPluginInfo& plugin) const;

  // Adds the given plugin to this group. Provide the position of the
  // plugin as given by PluginList so we can display its priority.
  void AddPlugin(const WebPluginInfo& plugin, int position);

  // Enables/disables this group. This enables/disables all plugins in the
  // group.
  void Enable(bool enable);

  // Returns this group's name
  const string16& GetGroupName() const { return group_name_; }

  // Returns the description of highest-priority plug-in in the group.
  const string16& description() const { return description_; }

  // Returns a DictionaryValue with data to display in the UI.
  DictionaryValue* GetDataForUI() const;

  // Returns a DictionaryValue with data to save in the preferences.
  DictionaryValue* GetSummary() const;

  // Returns the update URL.
  std::string GetUpdateURL() const { return update_url_; }

  // Returns true if the latest plugin in this group has known
  // security problems.
  bool IsVulnerable() const;

 private:
  FRIEND_TEST_ALL_PREFIXES(PluginGroupTest, PluginGroupDefinition);

  static const PluginGroupDefinition* GetPluginGroupDefinitions();
  static size_t GetPluginGroupDefinitionsSize();

  PluginGroup(const string16& group_name,
              const string16& name_matcher,
              const std::string& version_range_low,
              const std::string& version_range_high,
              const std::string& min_version,
              const std::string& update_url);

  // Set the description and version for this plugin group from the
  // given plug-in.
  void UpdateDescriptionAndVersion(const WebPluginInfo& plugin);

  static std::set<string16>* policy_disabled_puglins_;

  string16 group_name_;
  string16 name_matcher_;
  std::string version_range_low_str_;
  std::string version_range_high_str_;
  scoped_ptr<Version> version_range_low_;
  scoped_ptr<Version> version_range_high_;
  string16 description_;
  std::string update_url_;
  bool enabled_;
  std::string min_version_str_;
  scoped_ptr<Version> min_version_;
  scoped_ptr<Version> version_;
  std::vector<WebPluginInfo> web_plugin_infos_;
  std::vector<int> web_plugin_positions_;

  DISALLOW_COPY_AND_ASSIGN(PluginGroup);
};

#endif  // CHROME_COMMON_PLUGIN_GROUP_H_

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