extensions/renderer/bindings/binding_access_checker.cc

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "extensions/renderer/bindings/binding_access_checker.h"

#include "base/strings/stringprintf.h"
#include "gin/converter.h"

namespace extensions {

BindingAccessChecker::BindingAccessChecker(
    APIAvailabilityCallback api_available,
    PromiseAvailabilityCallback promises_available)
    : api_available_(std::move(api_available)),
      promises_available_(std::move(promises_available)) {}
BindingAccessChecker::~BindingAccessChecker() = default;

// TODO(tjudkins): Now that this also handles some promise checking, these two
// methods and the class should probably be renamed.
bool BindingAccessChecker::HasAccess(v8::Local<v8::Context> context,
                                     const std::string& full_name) const {
  return api_available_.Run(context, full_name);
}

bool BindingAccessChecker::HasAccessOrThrowError(
    v8::Local<v8::Context> context,
    const std::string& full_name) const {
  if (!HasAccess(context, full_name)) {
    v8::Isolate* isolate = v8::Isolate::GetCurrent();
    isolate->ThrowException(v8::Exception::Error(gin::StringToV8(
        isolate, base::StringPrintf("'%s' is not available in this context.",
                                    full_name.c_str()))));
    return false;
  }

  return true;
}

bool BindingAccessChecker::HasPromiseAccess(
    v8::Local<v8::Context> context) const {
  return promises_available_.Run(context);
}

}  // namespace extensions