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// Copyright 2014 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.
#include "mojo/public/cpp/bindings/lib/validation_context.h"
#include "base/logging.h"
namespace mojo {
namespace internal {
ValidationContext::ValidationContext(const void* data,
size_t data_num_bytes,
size_t num_handles,
size_t num_associated_endpoint_handles,
Message* message,
const base::StringPiece& description,
int stack_depth)
: message_(message),
description_(description),
data_begin_(reinterpret_cast<uintptr_t>(data)),
data_end_(data_begin_ + data_num_bytes),
handle_begin_(0),
handle_end_(static_cast<uint32_t>(num_handles)),
associated_endpoint_handle_begin_(0),
associated_endpoint_handle_end_(
static_cast<uint32_t>(num_associated_endpoint_handles)),
stack_depth_(stack_depth) {
// Check whether the calculation of |data_end_| or static_cast from size_t to
// uint32_t causes overflow.
// They shouldn't happen but they do, set the corresponding range to empty.
if (data_end_ < data_begin_) {
NOTREACHED();
data_end_ = data_begin_;
}
if (handle_end_ < num_handles) {
NOTREACHED();
handle_end_ = 0;
}
if (associated_endpoint_handle_end_ < num_associated_endpoint_handles) {
NOTREACHED();
associated_endpoint_handle_end_ = 0;
}
}
ValidationContext::~ValidationContext() {
}
} // namespace internal
} // namespace mojo
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