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// Copyright 2018 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 "content/browser/renderer_host/plugin_registry_impl.h"
#include "base/no_destructor.h"
#include "content/browser/plugin_service_impl.h"
#include "content/public/browser/plugin_service_filter.h"
namespace content {
namespace {
constexpr auto kPluginRefreshThreshold = base::TimeDelta::FromSeconds(3);
} // namespace
PluginRegistryImpl::PluginRegistryImpl(ResourceContext* resource_context)
: resource_context_(resource_context), weak_factory_(this) {}
PluginRegistryImpl::~PluginRegistryImpl() {}
void PluginRegistryImpl::Bind(blink::mojom::PluginRegistryRequest request) {
bindings_.AddBinding(this, std::move(request));
}
void PluginRegistryImpl::GetPlugins(bool refresh,
const url::Origin& main_frame_origin,
GetPluginsCallback callback) {
auto* plugin_service = PluginServiceImpl::GetInstance();
// Don't refresh if the specified threshold has not been passed. Note that
// this check is performed before off-loading to the file thread. The reason
// we do this is that some pages tend to request that the list of plugins be
// refreshed at an excessive rate. This instigates disk scanning, as the list
// is accumulated by doing multiple reads from disk. This effect is
// multiplied when we have several pages requesting this operation.
if (refresh) {
const base::TimeTicks now = base::TimeTicks::Now();
if (now - last_plugin_refresh_time_ >= kPluginRefreshThreshold) {
// Only refresh if the threshold hasn't been exceeded yet.
plugin_service->RefreshPlugins();
last_plugin_refresh_time_ = now;
}
}
plugin_service->GetPlugins(base::BindOnce(
&PluginRegistryImpl::GetPluginsComplete, weak_factory_.GetWeakPtr(),
main_frame_origin, std::move(callback)));
}
void PluginRegistryImpl::GetPluginsComplete(
const url::Origin& main_frame_origin,
GetPluginsCallback callback,
const std::vector<WebPluginInfo>& all_plugins) {
PluginServiceFilter* filter = PluginServiceImpl::GetInstance()->GetFilter();
std::vector<blink::mojom::PluginInfoPtr> plugins;
const int child_process_id = -1;
const int routing_id = MSG_ROUTING_NONE;
// In this loop, copy the WebPluginInfo (and do not use a reference) because
// the filter might mutate it.
for (WebPluginInfo plugin : all_plugins) {
// TODO(crbug.com/621724): Pass an url::Origin instead of a GURL.
if (!filter ||
filter->IsPluginAvailable(child_process_id, routing_id,
resource_context_, main_frame_origin.GetURL(),
main_frame_origin, &plugin)) {
auto plugin_blink = blink::mojom::PluginInfo::New();
plugin_blink->name = plugin.name;
plugin_blink->description = plugin.desc;
plugin_blink->filename = plugin.path.BaseName();
plugin_blink->background_color = plugin.background_color;
for (const auto& mime_type : plugin.mime_types) {
auto mime_type_blink = blink::mojom::PluginMimeType::New();
mime_type_blink->mime_type = mime_type.mime_type;
mime_type_blink->description = mime_type.description;
mime_type_blink->file_extensions = mime_type.file_extensions;
plugin_blink->mime_types.push_back(std::move(mime_type_blink));
}
plugins.push_back(std::move(plugin_blink));
}
}
std::move(callback).Run(std::move(plugins));
}
} // namespace content
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