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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @date 2017
* Metadata processing helpers.
*/
#include <string>
#include <iostream>
#include <libdevcore/JSON.h>
using namespace std;
namespace dev
{
namespace test
{
string bytecodeSansMetadata(string const& _bytecode)
{
/// The metadata hash takes up 43 bytes (or 86 characters in hex)
/// /a165627a7a72305820([0-9a-f]{64})0029$/
if (_bytecode.size() < 88)
return _bytecode;
if (_bytecode.substr(_bytecode.size() - 4, 4) != "0029")
return _bytecode;
if (_bytecode.substr(_bytecode.size() - 86, 18) != "a165627a7a72305820")
return _bytecode;
return _bytecode.substr(0, _bytecode.size() - 86);
}
bool isValidMetadata(string const& _metadata)
{
Json::Value metadata;
if (!jsonParseStrict(_metadata, metadata))
return false;
if (
!metadata.isObject() ||
!metadata.isMember("version") ||
!metadata.isMember("language") ||
!metadata.isMember("compiler") ||
!metadata.isMember("settings") ||
!metadata.isMember("sources") ||
!metadata.isMember("output") ||
!metadata["settings"].isMember("evmVersion")
)
return false;
if (!metadata["version"].isNumeric() || metadata["version"] != 1)
return false;
if (!metadata["language"].isString() || metadata["language"].asString() != "Solidity")
return false;
/// @TODO add more strict checks
return true;
}
}
} // end namespaces
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