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107 lines
2.4 KiB
C++
107 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CryptoBuffer.h"
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#include "mozilla/dom/UnionTypes.h"
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namespace mozilla {
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namespace dom {
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uint8_t*
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CryptoBuffer::Assign(const uint8_t* aData, uint32_t aLength)
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{
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return ReplaceElementsAt(0, Length(), aData, aLength);
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}
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uint8_t*
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CryptoBuffer::Assign(const SECItem* aItem)
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{
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MOZ_ASSERT(aItem);
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return Assign(aItem->data, aItem->len);
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}
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uint8_t*
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CryptoBuffer::Assign(const ArrayBuffer& aData)
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{
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aData.ComputeLengthAndData();
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return Assign(aData.Data(), aData.Length());
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}
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uint8_t*
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CryptoBuffer::Assign(const ArrayBufferView& aData)
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{
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aData.ComputeLengthAndData();
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return Assign(aData.Data(), aData.Length());
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}
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uint8_t*
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CryptoBuffer::Assign(const ArrayBufferViewOrArrayBuffer& aData)
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{
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if (aData.IsArrayBufferView()) {
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return Assign(aData.GetAsArrayBufferView());
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} else if (aData.IsArrayBuffer()) {
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return Assign(aData.GetAsArrayBuffer());
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}
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// If your union is uninitialized, something's wrong
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MOZ_ASSERT(false);
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SetLength(0);
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return nullptr;
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}
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uint8_t*
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CryptoBuffer::Assign(const OwningArrayBufferViewOrArrayBuffer& aData)
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{
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if (aData.IsArrayBufferView()) {
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return Assign(aData.GetAsArrayBufferView());
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} else if (aData.IsArrayBuffer()) {
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return Assign(aData.GetAsArrayBuffer());
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}
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// If your union is uninitialized, something's wrong
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MOZ_ASSERT(false);
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SetLength(0);
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return nullptr;
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}
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SECItem*
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CryptoBuffer::ToSECItem()
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{
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uint8_t* data = (uint8_t*) moz_malloc(Length());
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if (!data) {
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return nullptr;
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}
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SECItem* item = new SECItem();
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item->type = siBuffer;
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item->data = data;
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item->len = Length();
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memcpy(item->data, Elements(), Length());
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return item;
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}
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// "BigInt" comes from the WebCrypto spec
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// ("unsigned long" isn't very "big", of course)
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// Likewise, the spec calls for big-endian ints
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bool
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CryptoBuffer::GetBigIntValue(unsigned long& aRetVal)
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{
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if (Length() > sizeof(aRetVal)) {
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return false;
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}
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aRetVal = 0;
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for (size_t i=0; i < Length(); ++i) {
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aRetVal = (aRetVal << 8) + ElementAt(i);
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}
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return true;
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}
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} // namespace dom
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} // namespace mozilla
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