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// 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.
#include "chrome/browser/plugin_updater.h"
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/message_loop.h"
#include "base/path_service.h"
#include "base/scoped_ptr.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "base/version.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profile.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/pepper_plugin_registry.h"
#include "chrome/common/pref_names.h"
#include "webkit/glue/plugins/webplugininfo.h"
PluginUpdater::PluginUpdater()
: enable_internal_pdf_(true),
notify_pending_(false) {
}
DictionaryValue* PluginUpdater::CreatePluginFileSummary(
const WebPluginInfo& plugin) {
DictionaryValue* data = new DictionaryValue();
data->SetString("path", plugin.path.value());
data->SetString("name", plugin.name);
data->SetString("version", plugin.version);
data->SetBoolean("enabled", plugin.enabled);
return data;
}
// static
ListValue* PluginUpdater::GetPluginGroupsData() {
NPAPI::PluginList::PluginMap plugin_groups;
NPAPI::PluginList::Singleton()->GetPluginGroups(true, &plugin_groups);
// Construct DictionaryValues to return to the UI
ListValue* plugin_groups_data = new ListValue();
for (NPAPI::PluginList::PluginMap::const_iterator it =
plugin_groups.begin();
it != plugin_groups.end();
++it) {
plugin_groups_data->Append(it->second->GetDataForUI());
}
return plugin_groups_data;
}
void PluginUpdater::EnablePluginGroup(bool enable, const string16& group_name) {
if (PluginGroup::IsPluginNameDisabledByPolicy(group_name))
enable = false;
NPAPI::PluginList::Singleton()->EnableGroup(enable, group_name);
NotifyPluginStatusChanged();
}
void PluginUpdater::EnablePluginFile(bool enable,
const FilePath::StringType& path) {
FilePath file_path(path);
if (enable && !PluginGroup::IsPluginPathDisabledByPolicy(file_path))
NPAPI::PluginList::Singleton()->EnablePlugin(file_path);
else
NPAPI::PluginList::Singleton()->DisablePlugin(file_path);
NotifyPluginStatusChanged();
}
void PluginUpdater::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK_EQ(NotificationType::PREF_CHANGED, type.value);
const std::string* pref_name = Details<std::string>(details).ptr();
if (!pref_name) {
NOTREACHED();
return;
}
if (*pref_name == prefs::kPluginsPluginsBlacklist) {
PrefService* pref_service = Source<PrefService>(source).ptr();
const ListValue* list =
pref_service->GetList(prefs::kPluginsPluginsBlacklist);
DisablePluginsFromPolicy(list);
}
}
void PluginUpdater::DisablePluginsFromPolicy(const ListValue* plugin_names) {
// Generate the set of unique disabled plugin patterns from the disabled
// plugins list.
std::set<string16> policy_disabled_plugin_patterns;
if (plugin_names) {
ListValue::const_iterator end(plugin_names->end());
for (ListValue::const_iterator current(plugin_names->begin());
current != end; ++current) {
string16 plugin_name;
if ((*current)->GetAsString(&plugin_name)) {
policy_disabled_plugin_patterns.insert(plugin_name);
}
}
}
PluginGroup::SetPolicyDisabledPluginPatterns(policy_disabled_plugin_patterns);
NotifyPluginStatusChanged();
}
void PluginUpdater::DisablePluginGroupsFromPrefs(Profile* profile) {
bool update_internal_dir = false;
FilePath last_internal_dir =
profile->GetPrefs()->GetFilePath(prefs::kPluginsLastInternalDirectory);
FilePath cur_internal_dir;
if (PathService::Get(chrome::DIR_INTERNAL_PLUGINS, &cur_internal_dir) &&
cur_internal_dir != last_internal_dir) {
update_internal_dir = true;
profile->GetPrefs()->SetFilePath(
prefs::kPluginsLastInternalDirectory, cur_internal_dir);
}
if (!enable_internal_pdf_) {
// This DCHECK guards against us disabling/enabling the pdf plugin more than
// once without renaming the flag that tells us whether we can enable it
// automatically. Each time we disable the plugin by default after it was
// enabled by default, we need to rename that flag.
DCHECK(!profile->GetPrefs()->GetBoolean(prefs::kPluginsEnabledInternalPDF));
}
bool found_internal_pdf = false;
bool force_enable_internal_pdf = false;
string16 pdf_group_name = ASCIIToUTF16(PepperPluginRegistry::kPDFPluginName);
FilePath pdf_path;
PathService::Get(chrome::FILE_PDF_PLUGIN, &pdf_path);
FilePath::StringType pdf_path_str = pdf_path.value();
if (enable_internal_pdf_ &&
!profile->GetPrefs()->GetBoolean(prefs::kPluginsEnabledInternalPDF)) {
// We switched to the internal pdf plugin being on by default, and so we
// need to force it to be enabled. We only want to do it this once though,
// i.e. we don't want to enable it again if the user disables it afterwards.
profile->GetPrefs()->SetBoolean(prefs::kPluginsEnabledInternalPDF, true);
force_enable_internal_pdf = true;
}
if (ListValue* saved_plugins_list =
profile->GetPrefs()->GetMutableList(prefs::kPluginsPluginsList)) {
for (ListValue::const_iterator it = saved_plugins_list->begin();
it != saved_plugins_list->end();
++it) {
if (!(*it)->IsType(Value::TYPE_DICTIONARY)) {
LOG(WARNING) << "Invalid entry in " << prefs::kPluginsPluginsList;
continue; // Oops, don't know what to do with this item.
}
DictionaryValue* plugin = static_cast<DictionaryValue*>(*it);
string16 group_name;
bool enabled = true;
plugin->GetBoolean("enabled", &enabled);
FilePath::StringType path;
// The plugin list constains all the plugin files in addition to the
// plugin groups.
if (plugin->GetString("path", &path)) {
// Files have a path attribute, groups don't.
FilePath plugin_path(path);
if (update_internal_dir &&
FilePath::CompareIgnoreCase(plugin_path.DirName().value(),
last_internal_dir.value()) == 0) {
// If the internal plugin directory has changed and if the plugin
// looks internal, update its path in the prefs.
plugin_path = cur_internal_dir.Append(plugin_path.BaseName());
path = plugin_path.value();
plugin->SetString("path", path);
}
if (FilePath::CompareIgnoreCase(path, pdf_path_str) == 0) {
found_internal_pdf = true;
if (!enabled && force_enable_internal_pdf) {
enabled = true;
plugin->SetBoolean("enabled", true);
}
}
if (!enabled)
NPAPI::PluginList::Singleton()->DisablePlugin(plugin_path);
} else if (!enabled && plugin->GetString("name", &group_name)) {
// Don't disable this group if it's for the pdf plugin and we just
// forced it on.
if (force_enable_internal_pdf && pdf_group_name == group_name)
continue;
// Otherwise this is a list of groups.
EnablePluginGroup(false, group_name);
}
}
}
// Build the set of policy-disabled plugin patterns once and cache it.
// Don't do this in the constructor, there's no profile available there.
const ListValue* plugin_blacklist =
profile->GetPrefs()->GetList(prefs::kPluginsPluginsBlacklist);
DisablePluginsFromPolicy(plugin_blacklist);
if (!enable_internal_pdf_ && !found_internal_pdf) {
// The internal PDF plugin is disabled by default, and the user hasn't
// overridden the default.
NPAPI::PluginList::Singleton()->DisablePlugin(pdf_path);
EnablePluginGroup(false, pdf_group_name);
}
if (force_enable_internal_pdf) {
// See http://crbug.com/50105 for background.
EnablePluginGroup(false, ASCIIToUTF16(PluginGroup::kAdobeReader8GroupName));
EnablePluginGroup(false, ASCIIToUTF16(PluginGroup::kAdobeReader9GroupName));
}
}
void PluginUpdater::UpdatePreferences(Profile* profile) {
BrowserThread::PostTask(
BrowserThread::FILE,
FROM_HERE,
NewRunnableFunction(
&PluginUpdater::GetPreferencesDataOnFileThread, profile));
}
void PluginUpdater::GetPreferencesDataOnFileThread(void* profile) {
std::vector<WebPluginInfo> plugins;
NPAPI::PluginList::Singleton()->GetPlugins(false, &plugins);
NPAPI::PluginList::PluginMap groups;
NPAPI::PluginList::Singleton()->GetPluginGroups(false, &groups);
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
NewRunnableFunction(
&PluginUpdater::OnUpdatePreferences,
static_cast<Profile*>(profile), plugins, groups));
}
void PluginUpdater::OnUpdatePreferences(
Profile* profile,
const std::vector<WebPluginInfo>& plugins,
const NPAPI::PluginList::PluginMap& groups) {
ListValue* plugins_list = profile->GetPrefs()->GetMutableList(
prefs::kPluginsPluginsList);
plugins_list->Clear();
FilePath internal_dir;
if (PathService::Get(chrome::DIR_INTERNAL_PLUGINS, &internal_dir))
profile->GetPrefs()->SetFilePath(prefs::kPluginsLastInternalDirectory,
internal_dir);
// Add the plugin files.
for (std::vector<WebPluginInfo>::const_iterator it = plugins.begin();
it != plugins.end();
++it) {
plugins_list->Append(CreatePluginFileSummary(*it));
}
// Add the groups as well.
for (NPAPI::PluginList::PluginMap::const_iterator it = groups.begin();
it != groups.end(); ++it) {
// Don't save preferences for vulnerable pugins.
if (!CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableOutdatedPlugins) ||
!it->second->IsVulnerable()) {
plugins_list->Append(it->second->GetSummary());
}
}
}
void PluginUpdater::NotifyPluginStatusChanged() {
if (notify_pending_)
return;
notify_pending_ = true;
MessageLoop::current()->PostTask(
FROM_HERE,
NewRunnableFunction(&PluginUpdater::OnNotifyPluginStatusChanged));
}
void PluginUpdater::OnNotifyPluginStatusChanged() {
GetPluginUpdater()->notify_pending_ = false;
NotificationService::current()->Notify(
NotificationType::PLUGIN_ENABLE_STATUS_CHANGED,
Source<PluginUpdater>(GetPluginUpdater()),
NotificationService::NoDetails());
}
/*static*/
PluginUpdater* PluginUpdater::GetPluginUpdater() {
return Singleton<PluginUpdater>::get();
}
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