mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @date 2017
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* Metadata processing helpers.
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*/
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#include <string>
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#include <iostream>
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#include <libdevcore/JSON.h>
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#include <test/Metadata.h>
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using namespace std;
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namespace dev
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{
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namespace test
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{
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bytes bytecodeSansMetadata(bytes const& _bytecode)
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{
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unsigned size = _bytecode.size();
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if (size < 5)
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return bytes{};
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size_t metadataSize = (_bytecode[size - 2] << 8) + _bytecode[size - 1];
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if (size < (metadataSize + 2))
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return bytes{};
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// Sanity check: assume the first byte is a fixed-size CBOR array with either 1 or 2 entries
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unsigned char firstByte = _bytecode[size - metadataSize - 2];
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if (firstByte != 0xa1 && firstByte != 0xa2)
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return bytes{};
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return bytes(_bytecode.begin(), _bytecode.end() - metadataSize - 2);
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}
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string bytecodeSansMetadata(string const& _bytecode)
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{
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return toHex(bytecodeSansMetadata(fromHex(_bytecode, WhenError::Throw)));
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}
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bool isValidMetadata(string const& _metadata)
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{
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Json::Value metadata;
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if (!jsonParseStrict(_metadata, metadata))
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return false;
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if (
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!metadata.isObject() ||
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!metadata.isMember("version") ||
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!metadata.isMember("language") ||
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!metadata.isMember("compiler") ||
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!metadata.isMember("settings") ||
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!metadata.isMember("sources") ||
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!metadata.isMember("output") ||
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!metadata["settings"].isMember("evmVersion")
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)
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return false;
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if (!metadata["version"].isNumeric() || metadata["version"] != 1)
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return false;
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if (!metadata["language"].isString() || metadata["language"].asString() != "Solidity")
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return false;
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/// @TODO add more strict checks
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return true;
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}
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}
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} // end namespaces
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