bool parseHash(const Dictionary& raw, blink::WebCryptoAlgorithm& hash, ErrorContext context, String& errorDetails)
{
Dictionary rawHash;
if (!raw.get("hash", rawHash)) {
errorDetails = context.toString("hash", "Missing or not a dictionary");
return false;
}
context.add("hash");
return parseAlgorithm(rawHash, Digest, hash, context, errorDetails);
}
bool parseAlgorithm(const Dictionary& raw, AlgorithmOperation op, blink::WebCryptoAlgorithm& algorithm, ErrorContext context, String& errorDetails)
{
context.add("Algorithm");
if (!raw.isObject()) {
errorDetails = context.toString("Not an object");
return false;
}
String algorithmName;
if (!raw.get("name", algorithmName)) {
errorDetails = context.toString("name", "Missing or not a string");
return false;
}
const AlgorithmInfo* info = AlgorithmRegistry::instance().lookupAlgorithmByName(algorithmName);
if (!info) {
errorDetails = context.toString("Unrecognized algorithm name");
return false;
}
context.add(info->algorithmName);
if (info->paramsForOperation[op] == UnsupportedOp) {
errorDetails = context.toString("Unsupported operation");
return false;
}
blink::WebCryptoAlgorithmParamsType paramsType = static_cast<blink::WebCryptoAlgorithmParamsType>(info->paramsForOperation[op]);
OwnPtr<blink::WebCryptoAlgorithmParams> params;
if (!parseAlgorithmParams(raw, paramsType, params, context, errorDetails))
return false;
algorithm = blink::WebCryptoAlgorithm(info->algorithmId, params.release());
return true;
}
bool parseAlgorithmParams(const Dictionary& raw, blink::WebCryptoAlgorithmParamsType type, OwnPtr<blink::WebCryptoAlgorithmParams>& params, ErrorContext& context, String& errorDetails)
{
switch (type) {
case blink::WebCryptoAlgorithmParamsTypeNone:
return true;
case blink::WebCryptoAlgorithmParamsTypeAesCbcParams:
context.add("AesCbcParams");
return parseAesCbcParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeAesKeyGenParams:
context.add("AesKeyGenParams");
return parseAesKeyGenParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeHmacImportParams:
context.add("HmacImportParams");
return parseHmacImportParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeHmacKeyGenParams:
context.add("HmacKeyGenParams");
return parseHmacKeyGenParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams:
context.add("RsaHashedKeyGenParams");
return parseRsaHashedKeyGenParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeRsaHashedImportParams:
context.add("RsaHashedImportParams");
return parseRsaHashedImportParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeRsaKeyGenParams:
context.add("RsaKeyGenParams");
return parseRsaKeyGenParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeAesCtrParams:
context.add("AesCtrParams");
return parseAesCtrParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeAesGcmParams:
context.add("AesGcmParams");
return parseAesGcmParams(raw, params, context, errorDetails);
case blink::WebCryptoAlgorithmParamsTypeRsaOaepParams:
// TODO
notImplemented();
break;
}
ASSERT_NOT_REACHED();
return false;
}
