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authorwolfbeast <mcwerewolf@gmail.com>2018-05-03 05:55:15 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-05-03 05:55:15 +0200
commit43f7a588f96aaf88e7b69441c3b50bc9c7b20df7 (patch)
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Nuke the sandbox
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diff --git a/security/sandbox/chromium/base/bind.h b/security/sandbox/chromium/base/bind.h
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-// Copyright (c) 2011 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.
-
-#ifndef BASE_BIND_H_
-#define BASE_BIND_H_
-
-#include "base/bind_internal.h"
-#include "base/callback_internal.h"
-
-// -----------------------------------------------------------------------------
-// Usage documentation
-// -----------------------------------------------------------------------------
-//
-// See base/callback.h for documentation.
-//
-//
-// -----------------------------------------------------------------------------
-// Implementation notes
-// -----------------------------------------------------------------------------
-//
-// If you're reading the implementation, before proceeding further, you should
-// read the top comment of base/bind_internal.h for a definition of common
-// terms and concepts.
-//
-// RETURN TYPES
-//
-// Though Bind()'s result is meant to be stored in a Callback<> type, it
-// cannot actually return the exact type without requiring a large amount
-// of extra template specializations. The problem is that in order to
-// discern the correct specialization of Callback<>, Bind would need to
-// unwrap the function signature to determine the signature's arity, and
-// whether or not it is a method.
-//
-// Each unique combination of (arity, function_type, num_prebound) where
-// function_type is one of {function, method, const_method} would require
-// one specialization. We eventually have to do a similar number of
-// specializations anyways in the implementation (see the Invoker<>,
-// classes). However, it is avoidable in Bind if we return the result
-// via an indirection like we do below.
-//
-// TODO(ajwong): We might be able to avoid this now, but need to test.
-//
-// It is possible to move most of the static_assert into BindState<>, but it
-// feels a little nicer to have the asserts here so people do not need to crack
-// open bind_internal.h. On the other hand, it makes Bind() harder to read.
-
-namespace base {
-
-template <typename Functor, typename... Args>
-base::Callback<
- typename internal::BindState<
- typename internal::FunctorTraits<Functor>::RunnableType,
- typename internal::FunctorTraits<Functor>::RunType,
- typename internal::CallbackParamTraits<Args>::StorageType...>
- ::UnboundRunType>
-Bind(Functor functor, const Args&... args) {
- // Type aliases for how to store and run the functor.
- using RunnableType = typename internal::FunctorTraits<Functor>::RunnableType;
- using RunType = typename internal::FunctorTraits<Functor>::RunType;
-
- // Use RunnableType::RunType instead of RunType above because our
- // checks below for bound references need to know what the actual
- // functor is going to interpret the argument as.
- using BoundRunType = typename RunnableType::RunType;
-
- using BoundArgs =
- internal::TakeTypeListItem<sizeof...(Args),
- internal::ExtractArgs<BoundRunType>>;
-
- // Do not allow binding a non-const reference parameter. Non-const reference
- // parameters are disallowed by the Google style guide. Also, binding a
- // non-const reference parameter can make for subtle bugs because the
- // invoked function will receive a reference to the stored copy of the
- // argument and not the original.
- static_assert(!internal::HasNonConstReferenceItem<BoundArgs>::value,
- "do not bind functions with nonconst ref");
-
- const bool is_method = internal::HasIsMethodTag<RunnableType>::value;
-
- // For methods, we need to be careful for parameter 1. We do not require
- // a scoped_refptr because BindState<> itself takes care of AddRef() for
- // methods. We also disallow binding of an array as the method's target
- // object.
- static_assert(!internal::BindsArrayToFirstArg<is_method, Args...>::value,
- "first bound argument to method cannot be array");
- static_assert(
- !internal::HasRefCountedParamAsRawPtr<is_method, Args...>::value,
- "a parameter is a refcounted type and needs scoped_refptr");
-
- using BindState = internal::BindState<
- RunnableType, RunType,
- typename internal::CallbackParamTraits<Args>::StorageType...>;
-
- return Callback<typename BindState::UnboundRunType>(
- new BindState(internal::MakeRunnable(functor), args...));
-}
-
-} // namespace base
-
-#endif // BASE_BIND_H_