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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_RESOURCE_REQUEST_POLICY_H_
#define EXTENSIONS_RENDERER_RESOURCE_REQUEST_POLICY_H_
#include <map>
#include "base/memory/raw_ptr.h"
#include "extensions/common/extension_guid.h"
#include "extensions/common/extension_id.h"
#include "ui/base/page_transition_types.h"
#include "url/origin.h"
class GURL;
namespace blink {
class WebLocalFrame;
}
namespace extensions {
class Dispatcher;
class Extension;
// Encapsulates the policy for when chrome-extension:// URLs can be requested.
class ResourceRequestPolicy {
public:
class Delegate {
public:
virtual ~Delegate() {}
// Returns true if `origin` is a special origin from which requests should
// always be allowed.
virtual bool ShouldAlwaysAllowRequestForFrameOrigin(
const url::Origin& frame_origin) = 0;
// Returns true if a page with the given `page_origin` should be allowed to
// load the resource at `target_url` because it is a devtools page.
virtual bool AllowLoadForDevToolsPage(const GURL& page_origin,
const GURL& target_url) = 0;
};
ResourceRequestPolicy(Dispatcher* dispatcher,
std::unique_ptr<Delegate> delegate);
ResourceRequestPolicy(const ResourceRequestPolicy&) = delete;
ResourceRequestPolicy& operator=(const ResourceRequestPolicy&) = delete;
~ResourceRequestPolicy();
void OnExtensionLoaded(const Extension& extension);
void OnExtensionUnloaded(const ExtensionId& extension);
// Returns true if the chrome-extension:// `target_url` can be requested
// from `upstream_url`. In some cases this decision is made based upon how
// this request was generated. Web triggered transitions are more restrictive
// than those triggered through UI.
bool CanRequestResource(const GURL& upstream_url,
const GURL& target_url,
blink::WebLocalFrame* frame,
ui::PageTransition transition_type,
const url::Origin* initiator_origin);
private:
// Determine if the host is web accessible.
bool IsWebAccessibleHost(const std::string& host);
raw_ptr<Dispatcher> dispatcher_;
std::unique_ptr<Delegate> delegate_;
// 1:1 mapping of extension IDs with any potentially web- or webview-
// accessible resources to their corresponding GUIDs.
using WebAccessibleHostMap = std::map<ExtensionId, ExtensionGuid>;
WebAccessibleHostMap web_accessible_resources_map_;
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_RESOURCE_REQUEST_POLICY_H_
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