51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "mojo/public/cpp/bindings/lib/validation_context.h"
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#include "base/logging.h"
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namespace mojo {
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namespace internal {
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ValidationContext::ValidationContext(const void* data,
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size_t data_num_bytes,
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size_t num_handles,
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size_t num_associated_endpoint_handles,
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Message* message,
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const base::StringPiece& description,
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int stack_depth)
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: message_(message),
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description_(description),
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data_begin_(reinterpret_cast<uintptr_t>(data)),
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data_end_(data_begin_ + data_num_bytes),
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handle_begin_(0),
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handle_end_(static_cast<uint32_t>(num_handles)),
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associated_endpoint_handle_begin_(0),
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associated_endpoint_handle_end_(
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static_cast<uint32_t>(num_associated_endpoint_handles)),
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stack_depth_(stack_depth) {
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// Check whether the calculation of |data_end_| or static_cast from size_t to
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// uint32_t causes overflow.
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// They shouldn't happen but they do, set the corresponding range to empty.
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if (data_end_ < data_begin_) {
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NOTREACHED();
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data_end_ = data_begin_;
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}
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if (handle_end_ < num_handles) {
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NOTREACHED();
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handle_end_ = 0;
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}
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if (associated_endpoint_handle_end_ < num_associated_endpoint_handles) {
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NOTREACHED();
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associated_endpoint_handle_end_ = 0;
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}
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}
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ValidationContext::~ValidationContext() {
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}
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} // namespace internal
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} // namespace mojo
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