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// Copyright (c) 2012 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_finder.h"
#include "base/bind.h"
#include "base/json/json_reader.h"
#include "base/message_loop.h"
#include "base/stl_util.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/plugin_installer.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/browser_thread.h"
#include "googleurl/src/gurl.h"
#include "grit/browser_resources.h"
#include "ui/base/resource/resource_bundle.h"
// static
PluginFinder* PluginFinder::GetInstance() {
return Singleton<PluginFinder>::get();
}
PluginFinder::PluginFinder() : plugin_list_(LoadPluginList()) {
if (!plugin_list_.get()) {
NOTREACHED();
plugin_list_.reset(new base::ListValue());
}
}
// static
scoped_ptr<base::ListValue> PluginFinder::LoadPluginList() {
return scoped_ptr<base::ListValue>(LoadPluginListInternal()).Pass();
}
base::ListValue* PluginFinder::LoadPluginListInternal() {
#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)
base::StringPiece json_resource(
ResourceBundle::GetSharedInstance().GetRawDataResource(
IDR_PLUGIN_DB_JSON));
bool allow_trailing_comma = false;
std::string error_str;
scoped_ptr<base::Value> value(base::JSONReader::ReadAndReturnError(
json_resource.as_string(),
allow_trailing_comma,
NULL,
&error_str));
if (!value.get()) {
DLOG(ERROR) << error_str;
return NULL;
}
base::DictionaryValue* dict = NULL;
if (!value->GetAsDictionary(&dict))
return NULL;
base::ListValue* list = NULL;
if (!dict->GetList("plugins", &list))
return NULL;
return list->DeepCopy();
#else
return new base::ListValue();
#endif
}
PluginFinder::~PluginFinder() {
STLDeleteValues(&installers_);
}
void PluginFinder::FindPlugin(
const std::string& mime_type,
const std::string& language,
const FindPluginCallback& callback) {
PluginInstaller* installer = FindPluginInternal(mime_type, language);
MessageLoop::current()->PostTask(FROM_HERE, base::Bind(callback, installer));
}
void PluginFinder::FindPluginWithIdentifier(
const std::string& identifier,
const FindPluginCallback& found_callback) {
PluginInstaller* installer = NULL;
std::map<std::string, PluginInstaller*>::const_iterator it =
installers_.find(identifier);
if (it != installers_.end()) {
installer = it->second;
} else {
for (ListValue::const_iterator plugin_it = plugin_list_->begin();
plugin_it != plugin_list_->end(); ++plugin_it) {
const base::DictionaryValue* plugin = NULL;
if (!(*plugin_it)->GetAsDictionary(&plugin)) {
NOTREACHED();
continue;
}
std::string id;
bool success = plugin->GetString("identifier", &id);
DCHECK(success);
if (id == identifier) {
installer = CreateInstaller(identifier, plugin);
break;
}
}
}
MessageLoop::current()->PostTask(FROM_HERE,
base::Bind(found_callback, installer));
}
PluginInstaller* PluginFinder::CreateInstaller(
const std::string& identifier,
const base::DictionaryValue* plugin_dict) {
DCHECK(!installers_[identifier]);
std::string url;
bool success = plugin_dict->GetString("url", &url);
DCHECK(success);
std::string help_url;
plugin_dict->GetString("help_url", &help_url);
string16 name;
success = plugin_dict->GetString("name", &name);
DCHECK(success);
bool display_url = false;
plugin_dict->GetBoolean("displayurl", &display_url);
PluginInstaller*installer = new PluginInstaller(identifier,
GURL(url),
GURL(help_url),
name,
display_url);
installers_[identifier] = installer;
return installer;
}
PluginInstaller* PluginFinder::FindPluginInternal(
const std::string& mime_type,
const std::string& language) {
if (!g_browser_process->local_state()->GetBoolean(
prefs::kDisablePluginFinder)) {
for (ListValue::const_iterator plugin_it = plugin_list_->begin();
plugin_it != plugin_list_->end(); ++plugin_it) {
const base::DictionaryValue* plugin = NULL;
if (!(*plugin_it)->GetAsDictionary(&plugin)) {
NOTREACHED();
continue;
}
std::string language_str;
bool success = plugin->GetString("lang", &language_str);
DCHECK(success);
if (language_str != language)
continue;
ListValue* mime_types = NULL;
success = plugin->GetList("mime_types", &mime_types);
DCHECK(success);
for (ListValue::const_iterator mime_type_it = mime_types->begin();
mime_type_it != mime_types->end(); ++mime_type_it) {
std::string mime_type_str;
success = (*mime_type_it)->GetAsString(&mime_type_str);
DCHECK(success);
if (mime_type_str == mime_type) {
std::string identifier;
bool success = plugin->GetString("identifier", &identifier);
DCHECK(success);
std::map<std::string, PluginInstaller*>::const_iterator it =
installers_.find(identifier);
if (it != installers_.end())
return it->second;
return CreateInstaller(identifier, plugin);
}
}
}
}
return NULL;
}
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