Reland r101269: Store plug-in enabled/disabled state in PluginPrefs instead of WebPluginInfo.

webkit/plugins/npapi/plugin_group.cc

Index: webkit/plugins/npapi/plugin_group.cc
diff --git a/webkit/plugins/npapi/plugin_group.cc b/webkit/plugins/npapi/plugin_group.cc
index 1f5745ecbdb9bc876ec87586b8526d7419cf96c4..b0c89f4b39a8d6b970698e441f9cc5b7393934b9 100644
--- a/webkit/plugins/npapi/plugin_group.cc
+++ b/webkit/plugins/npapi/plugin_group.cc
@@ -27,83 +27,6 @@ const char* PluginGroup::kRealPlayerGroupName = "RealPlayer";
 const char* PluginGroup::kSilverlightGroupName = "Silverlight";
 const char* PluginGroup::kWindowsMediaPlayerGroupName = "Windows Media Player";
 
-/*static*/
-std::set<string16>* PluginGroup::policy_disabled_plugin_patterns_;
-/*static*/
-std::set<string16>* PluginGroup::policy_disabled_plugin_exception_patterns_;
-/*static*/
-std::set<string16>* PluginGroup::policy_enabled_plugin_patterns_;
-
-/*static*/
-void PluginGroup::SetPolicyEnforcedPluginPatterns(
-    const std::set<string16>& plugins_disabled,
-    const std::set<string16>& plugins_disabled_exceptions,
-    const std::set<string16>& plugins_enabled) {
-  if (!policy_disabled_plugin_patterns_)
-    policy_disabled_plugin_patterns_ = new std::set<string16>(plugins_disabled);
-  else
-    *policy_disabled_plugin_patterns_ = plugins_disabled;
-
-  if (!policy_disabled_plugin_exception_patterns_)
-    policy_disabled_plugin_exception_patterns_ =
-        new std::set<string16>(plugins_disabled_exceptions);
-  else
-    *policy_disabled_plugin_exception_patterns_ = plugins_disabled_exceptions;
-
-  if (!policy_enabled_plugin_patterns_)
-    policy_enabled_plugin_patterns_ = new std::set<string16>(plugins_enabled);
-  else
-    *policy_enabled_plugin_patterns_ = plugins_enabled;
-}
-
-/*static*/
-bool PluginGroup::IsStringMatchedInSet(const string16& name,
-                                       const std::set<string16>* pattern_set) {
-  if (!pattern_set)
-    return false;
-
-  std::set<string16>::const_iterator pattern(pattern_set->begin());
-  while (pattern != pattern_set->end()) {
-    if (MatchPattern(name, *pattern))
-      return true;
-    ++pattern;
-  }
-
-  return false;
-}
-
-/*static*/
-bool PluginGroup::IsPluginNameDisabledByPolicy(const string16& plugin_name) {
-  // A plugin that matches some "disabled" pattern but also matches an "enabled"
-  // pattern will be enabled. Example: disable "*", enable "Flash, Java".
-  // Same for matching an "exception" pattern.
-  return IsStringMatchedInSet(plugin_name, policy_disabled_plugin_patterns_) &&
-        !IsStringMatchedInSet(plugin_name, policy_enabled_plugin_patterns_) &&
-        !IsStringMatchedInSet(plugin_name,
-                              policy_disabled_plugin_exception_patterns_);
-}
-
-/*static*/
-bool PluginGroup::IsPluginFileNameDisabledByPolicy(const string16& plugin_name,
-                                                   const string16& group_name) {
-  // This handles a specific plugin within a group that is allowed,
-  // but whose name matches a disabled pattern.
-  // Example: disable "*", exception "Java".
-  bool group_has_exception = IsStringMatchedInSet(
-      group_name,
-      policy_disabled_plugin_exception_patterns_);
-
-  return !IsPluginNameEnabledByPolicy(plugin_name) &&
-         !group_has_exception &&
-          IsPluginNameDisabledByPolicy(plugin_name);
-}
-
-/*static*/
-bool PluginGroup::IsPluginNameEnabledByPolicy(const string16& plugin_name) {
-  // There are no exceptions to enabled plugins.
-  return IsStringMatchedInSet(plugin_name, policy_enabled_plugin_patterns_);
-}
-
 VersionRange::VersionRange(const VersionRangeDefinition& definition)
     : low_str(definition.version_matcher_low),
       high_str(definition.version_matcher_high),
@@ -145,20 +68,15 @@ PluginGroup::PluginGroup(const string16& group_name,
     : identifier_(identifier),
       group_name_(group_name),
       name_matcher_(name_matcher),
-      update_url_(update_url),
-      enabled_(false),
-      version_(Version::GetVersionFromString("0")) {
+      update_url_(update_url) {
 }
 
 void PluginGroup::InitFrom(const PluginGroup& other) {
   identifier_ = other.identifier_;
   group_name_ = other.group_name_;
   name_matcher_ = other.name_matcher_;
-  description_ = other.description_;
   update_url_ = other.update_url_;
-  enabled_ = other.enabled_;
   version_ranges_ = other.version_ranges_;
-  version_.reset(other.version_->Clone());
   web_plugin_infos_ = other.web_plugin_infos_;
 }
 
@@ -256,33 +174,6 @@ Version* PluginGroup::CreateVersionFromString(const string16& version_string) {
   return Version::GetVersionFromString(version);
 }
 
-void PluginGroup::UpdateActivePlugin(const WebPluginInfo& plugin) {
-  // A group is enabled if any of the files are enabled.
-  if (IsPluginEnabled(plugin)) {
-    // The description of the group needs update either when it's state is
-    // about to change to enabled or if has never been set.
-    if (!enabled_ || description_.empty())
-      UpdateDescriptionAndVersion(plugin);
-    // In case an enabled plugin has been added to a group that is currently
-    // disabled then we should enable the group.
-    if (!enabled_)
-      enabled_ = true;
-  } else {
-    // If this is the first plugin and it's disabled,
-    // use its description for now.
-    if (description_.empty())
-      UpdateDescriptionAndVersion(plugin);
-  }
-}
-
-void PluginGroup::UpdateDescriptionAndVersion(const WebPluginInfo& plugin) {
-  description_ = plugin.desc;
-  if (Version* new_version = CreateVersionFromString(plugin.version))
-    version_.reset(new_version);
-  else
-    version_.reset(Version::GetVersionFromString("0"));
-}
-
 void PluginGroup::AddPlugin(const WebPluginInfo& plugin) {
   // Check if this group already contains this plugin.
   for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
@@ -292,58 +183,21 @@ void PluginGroup::AddPlugin(const WebPluginInfo& plugin) {
     }
   }
   web_plugin_infos_.push_back(plugin);
-  UpdateActivePlugin(web_plugin_infos_.back());
 }
 
 bool PluginGroup::RemovePlugin(const FilePath& filename) {
   bool did_remove = false;
-  ResetGroupState();
   for (size_t i = 0; i < web_plugin_infos_.size();) {
     if (web_plugin_infos_[i].path == filename) {
       web_plugin_infos_.erase(web_plugin_infos_.begin() + i);
       did_remove = true;
     } else {
-      UpdateActivePlugin(web_plugin_infos_[i]);
       i++;
     }
   }
   return did_remove;
 }
 
-bool PluginGroup::EnablePlugin(const FilePath& filename) {
-  bool did_enable = false;
-  ResetGroupState();
-  for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
-    if (web_plugin_infos_[i].path == filename) {
-      did_enable = Enable(
-          &web_plugin_infos_[i],
-          IsPluginNameEnabledByPolicy(web_plugin_infos_[i].name) ?
-              WebPluginInfo::USER_ENABLED_POLICY_ENABLED :
-              WebPluginInfo::USER_ENABLED);
-    }
-    UpdateActivePlugin(web_plugin_infos_[i]);
-  }
-  return did_enable;
-}
-
-bool PluginGroup::DisablePlugin(const FilePath& filename) {
-  bool did_disable = false;
-  ResetGroupState();
-  for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
-    if (web_plugin_infos_[i].path == filename) {
-      // We are only called for user intervention however we should respect a
-      // policy that might as well be active on this plugin.
-      did_disable = Disable(
-          &web_plugin_infos_[i],
-          IsPluginNameDisabledByPolicy(web_plugin_infos_[i].name) ?
-              WebPluginInfo::USER_DISABLED_POLICY_DISABLED :
-              WebPluginInfo::USER_DISABLED);
-    }
-    UpdateActivePlugin(web_plugin_infos_[i]);
-  }
-  return did_disable;
-}
-
 string16 PluginGroup::GetGroupName() const {
   if (!group_name_.empty())
     return group_name_;
@@ -365,91 +219,6 @@ bool PluginGroup::ContainsPlugin(const FilePath& path) const {
   return false;
 }
 
-
-DictionaryValue* PluginGroup::GetSummary() const {
-  DictionaryValue* result = new DictionaryValue();
-  result->SetString("name", GetGroupName());
-  result->SetBoolean("enabled", enabled_);
-  return result;
-}
-
-DictionaryValue* PluginGroup::GetDataForUI() const {
-  string16 name = GetGroupName();
-  DictionaryValue* result = new DictionaryValue();
-  result->SetString("name", name);
-  result->SetString("description", description_);
-  result->SetString("version", version_->GetString());
-  result->SetString("update_url", update_url_);
-  result->SetBoolean("critical", IsVulnerable());
-
-  bool group_disabled_by_policy = IsPluginNameDisabledByPolicy(name);
-  bool group_enabled_by_policy = IsPluginNameEnabledByPolicy(name);
-  ListValue* plugin_files = new ListValue();
-  bool all_plugins_disabled_by_policy = true;
-  bool all_plugins_enabled_by_policy = true;
-  for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
-    DictionaryValue* plugin_file = new DictionaryValue();
-    plugin_file->SetString("name", web_plugin_infos_[i].name);
-    plugin_file->SetString("description", web_plugin_infos_[i].desc);
-    plugin_file->SetString("path", web_plugin_infos_[i].path.value());
-    plugin_file->SetString("version", web_plugin_infos_[i].version);
-
-    bool plugin_disabled_by_policy = group_disabled_by_policy ||
-        ((web_plugin_infos_[i].enabled & WebPluginInfo::POLICY_DISABLED) != 0);
-    bool plugin_enabled_by_policy = group_enabled_by_policy ||
-        ((web_plugin_infos_[i].enabled & WebPluginInfo::POLICY_ENABLED) != 0);
-
-    if (!plugin_disabled_by_policy)
-      all_plugins_disabled_by_policy = false;
-    if (!plugin_enabled_by_policy)
-      all_plugins_enabled_by_policy = false;
-
-    if (plugin_disabled_by_policy) {
-      plugin_file->SetString("enabledMode", "disabledByPolicy");
-    } else if (plugin_enabled_by_policy) {
-        plugin_file->SetString("enabledMode", "enabledByPolicy");
-    } else {
-      plugin_file->SetString(
-          "enabledMode", IsPluginEnabled(web_plugin_infos_[i]) ?
-              "enabledByUser" : "disabledByUser");
-    }
-
-    ListValue* mime_types = new ListValue();
-    const std::vector<WebPluginMimeType>& plugin_mime_types =
-        web_plugin_infos_[i].mime_types;
-    for (size_t j = 0; j < plugin_mime_types.size(); ++j) {
-      DictionaryValue* mime_type = new DictionaryValue();
-      mime_type->SetString("mimeType", plugin_mime_types[j].mime_type);
-      mime_type->SetString("description", plugin_mime_types[j].description);
-
-      ListValue* file_extensions = new ListValue();
-      const std::vector<std::string>& mime_file_extensions =
-          plugin_mime_types[j].file_extensions;
-      for (size_t k = 0; k < mime_file_extensions.size(); ++k)
-        file_extensions->Append(new StringValue(mime_file_extensions[k]));
-      mime_type->Set("fileExtensions", file_extensions);
-
-      mime_types->Append(mime_type);
-    }
-    plugin_file->Set("mimeTypes", mime_types);
-
-    plugin_files->Append(plugin_file);
-  }
-
-  if (group_disabled_by_policy || all_plugins_disabled_by_policy) {
-    result->SetString("enabledMode", "disabledByPolicy");
-  } else if (group_enabled_by_policy || all_plugins_enabled_by_policy) {
-    result->SetString("enabledMode", "enabledByPolicy");
-  } else {
-    result->SetString("enabledMode", enabled_ ?
-                              "enabledByUser" :
-                              "disabledByUser");
-  }
-  result->Set("plugin_files", plugin_files);
-
-  return result;
-}
-
 /*static*/
 bool PluginGroup::IsVersionInRange(const Version& version,
                                    const VersionRange& range) {
@@ -472,34 +241,26 @@ bool PluginGroup::IsPluginOutdated(const Version& plugin_version,
   return false;
 }
 
-bool PluginGroup::IsWhitelisted() const {
-  for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
-    if (web_plugin_infos_[i].enabled & WebPluginInfo::POLICY_ENABLED)
-      return true;
-  }
-  return false;
-}
-
 // Returns true if the latest version of this plugin group is vulnerable.
-bool PluginGroup::IsVulnerable() const {
-  // A plugin isn't considered vulnerable if it's explicitly whitelisted.
-  if (IsWhitelisted())
+bool PluginGroup::IsVulnerable(const WebPluginInfo& plugin) const {
+  scoped_ptr<Version> version(CreateVersionFromString(plugin.version));
+  if (!version.get())
     return false;
 
   for (size_t i = 0; i < version_ranges_.size(); ++i) {
-    if (IsPluginOutdated(*version_, version_ranges_[i]))
+    if (IsPluginOutdated(*version, version_ranges_[i]))
       return true;
   }
   return false;
 }
 
-bool PluginGroup::RequiresAuthorization() const {
-  // A plugin doesn't require authorization if it's explicitly whitelisted.
-  if (IsWhitelisted())
+bool PluginGroup::RequiresAuthorization(const WebPluginInfo& plugin) const {
+  scoped_ptr<Version> version(CreateVersionFromString(plugin.version));
+  if (!version.get())
     return false;
 
   for (size_t i = 0; i < version_ranges_.size(); ++i) {
-    if (IsVersionInRange(*version_, version_ranges_[i]) &&
+    if (IsVersionInRange(*version, version_ranges_[i]) &&
         version_ranges_[i].requires_authorization)
       return true;
   }
@@ -510,114 +271,5 @@ bool PluginGroup::IsEmpty() const {
   return web_plugin_infos_.empty();
 }
 
-bool PluginGroup::EnableGroup(bool enable) {
-  bool group_disabled_by_policy = IsPluginNameDisabledByPolicy(group_name_);
-  bool group_enabled_by_policy = IsPluginNameEnabledByPolicy(group_name_);
-
-  // We can't enable nor disable groups controlled by policy.
-  if ((group_disabled_by_policy && enable) ||
-      (group_enabled_by_policy && !enable))
-    return false;
-
-  ResetGroupState();
-  for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
-    bool policy_enabled =
-        IsPluginNameEnabledByPolicy(web_plugin_infos_[i].name);
-    bool policy_disabled =
-        IsPluginFileNameDisabledByPolicy(web_plugin_infos_[i].name,
-                                         group_name_);
-    if (policy_disabled) {
-      Disable(&web_plugin_infos_[i], WebPluginInfo::POLICY_DISABLED);
-    } else if (policy_enabled) {
-      Enable(&web_plugin_infos_[i], WebPluginInfo::POLICY_ENABLED);
-    } else if (enable) {
-      Enable(&web_plugin_infos_[i], WebPluginInfo::USER_ENABLED);
-    } else {
-      Disable(&web_plugin_infos_[i], WebPluginInfo::USER_DISABLED);
-    }
-    UpdateActivePlugin(web_plugin_infos_[i]);
-  }
-  return enabled_ == enable;
-}
-
-void PluginGroup::EnforceGroupPolicy() {
-  bool group_disabled_by_policy = IsPluginNameDisabledByPolicy(group_name_);
-  bool group_enabled_by_policy = IsPluginNameEnabledByPolicy(group_name_);
-
-  ResetGroupState();
-  for (size_t i = 0; i < web_plugin_infos_.size(); ++i) {
-    bool policy_enabled =
-        group_enabled_by_policy ||
-        IsPluginNameEnabledByPolicy(web_plugin_infos_[i].name);
-    bool policy_disabled =
-        !policy_enabled &&
-        (group_disabled_by_policy ||
-         IsPluginFileNameDisabledByPolicy(web_plugin_infos_[i].name,
-                                          group_name_));
-    if (policy_disabled) {
-      Disable(&web_plugin_infos_[i], WebPluginInfo::POLICY_DISABLED);
-    } else if (policy_enabled) {
-      Enable(&web_plugin_infos_[i], WebPluginInfo::POLICY_ENABLED);
-    } else {
-      // If not managed, use the user's preference.
-      if ((web_plugin_infos_[i].enabled & WebPluginInfo::USER_MASK) ==
-          WebPluginInfo::USER_ENABLED) {
-        Enable(&web_plugin_infos_[i], WebPluginInfo::POLICY_UNMANAGED);
-      } else {
-        Disable(&web_plugin_infos_[i], WebPluginInfo::POLICY_UNMANAGED);
-      }
-    }
-    UpdateActivePlugin(web_plugin_infos_[i]);
-  }
-}
-
-void PluginGroup::ResetGroupState() {
-  enabled_ = false;
-  description_.clear();
-  version_.reset(Version::GetVersionFromString("0"));
-}
-
-/*static*/
-bool PluginGroup::SetPluginState(WebPluginInfo* plugin,
-                                 int new_reason,
-                                 bool state_changes) {
-  // If we are only stripping the policy then mask the policy bits.
-  if (new_reason == WebPluginInfo::POLICY_UNMANAGED) {
-    plugin->enabled &= WebPluginInfo::USER_MASK;
-    return true;
-  }
-  if (new_reason & WebPluginInfo::MANAGED_MASK) {
-    // Policy-enforced change: preserve the user's preference, and override
-    // a possible previous policy flag.
-    plugin->enabled = (plugin->enabled & WebPluginInfo::USER_MASK) | new_reason;
-  } else if (state_changes && (plugin->enabled & WebPluginInfo::MANAGED_MASK)) {
-    // Refuse change when managed.
-    return false;
-  } else {
-    // Accept the user update, but keep the policy flag if present.
-    plugin->enabled = (plugin->enabled & WebPluginInfo::MANAGED_MASK) |
-        new_reason;
-  }
-  return true;
-}
-
-/*static*/
-bool PluginGroup::Enable(WebPluginInfo* plugin, int new_reason) {
-  DCHECK(new_reason == WebPluginInfo::USER_ENABLED ||
-         new_reason == WebPluginInfo::POLICY_ENABLED ||
-         new_reason == WebPluginInfo::USER_ENABLED_POLICY_ENABLED ||
-         new_reason == WebPluginInfo::POLICY_UNMANAGED);
-  return SetPluginState(plugin, new_reason, !IsPluginEnabled(*plugin));
-}
-
-/*static*/
-bool PluginGroup::Disable(WebPluginInfo* plugin, int new_reason) {
-  DCHECK(new_reason == WebPluginInfo::USER_DISABLED ||
-         new_reason == WebPluginInfo::POLICY_DISABLED ||
-         new_reason == WebPluginInfo::USER_DISABLED_POLICY_DISABLED ||
-         new_reason == WebPluginInfo::POLICY_UNMANAGED);
-  return SetPluginState(plugin, new_reason, IsPluginEnabled(*plugin));
-}
-
 }  // namespace npapi
 }  // namespace webkit