chromium/src/third_party/blink/renderer/bindings/core/v8/script_controller.h

/*
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 * modification, are permitted provided that the following conditions are
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 *
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
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#ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_CONTROLLER_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_CONTROLLER_H_

#include <memory>

#include "base/macros.h"
#include "third_party/blink/renderer/bindings/core/v8/window_proxy_manager.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/text_position.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
#include "v8/include/v8.h"

namespace blink {

class DOMWrapperWorld;
class KURL;
class LocalDOMWindow;
class SecurityOrigin;

enum class ExecuteScriptPolicy;

// This class exposes methods to run script in a frame (in the main world and
// in isolated worlds). An instance can be obtained by using
// LocalDOMWindow::GetScriptController().
class CORE_EXPORT ScriptController final
    : public GarbageCollected<ScriptController> {
 public:
  ScriptController(LocalDOMWindow& window,
                   LocalWindowProxyManager& window_proxy_manager)
      : window_(&window), window_proxy_manager_(&window_proxy_manager) {}
  void Trace(Visitor*) const;

  // This returns an initialized window proxy. (If the window proxy is not
  // yet initialized, it's implicitly initialized at the first access.)
  LocalWindowProxy* WindowProxy(DOMWrapperWorld& world) {
    return window_proxy_manager_->WindowProxy(world);
  }

  v8::Local<v8::Value> EvaluateMethodInMainWorld(
      v8::Local<v8::Function> function,
      v8::Local<v8::Value> receiver,
      int argc,
      v8::Local<v8::Value> argv[]);

  // Executes a javascript url in the main world. |world_for_csp| denotes the
  // javascript world in which this navigation initiated and which should be
  // used for CSP checks.
  void ExecuteJavaScriptURL(const KURL&,
                            network::mojom::CSPDisposition,
                            const DOMWrapperWorld* world_for_csp);

  // Creates a new isolated world for DevTools with the given human readable
  // |world_name| and returns it id or nullptr on failure.
  scoped_refptr<DOMWrapperWorld> CreateNewInspectorIsolatedWorld(
      const String& world_name);

  // Disables eval for the main world.
  void DisableEval(const String& error_message);

  // Disables eval for the given isolated |world_id|. This initializes the
  // window proxy for the isolated world, if it's not yet initialized.
  void DisableEvalForIsolatedWorld(int32_t world_id,
                                   const String& error_message);

  TextPosition EventHandlerPosition() const;

  void UpdateDocument();
  void UpdateSecurityOrigin(const SecurityOrigin*);

  // Registers a v8 extension to be available on webpages. Will only
  // affect v8 contexts initialized after this call.
  static void RegisterExtensionIfNeeded(std::unique_ptr<v8::Extension>);
  static v8::ExtensionConfiguration ExtensionsFor(const ExecutionContext*);

 private:
  bool CanExecuteScript(ExecuteScriptPolicy policy);
  v8::Isolate* GetIsolate() const {
    return window_proxy_manager_->GetIsolate();
  }
  void EnableEval();

  // Sets whether eval is enabled for the context corresponding to the given
  // |world|. |error_message| is used only when |allow_eval| is false.
  void SetEvalForWorld(DOMWrapperWorld& world,
                       bool allow_eval,
                       const String& error_message);

  const Member<LocalDOMWindow> window_;
  const Member<LocalWindowProxyManager> window_proxy_manager_;

  DISALLOW_COPY_AND_ASSIGN(ScriptController);
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_SCRIPT_CONTROLLER_H_