meta-contract
Version:
Meta Contract SDK
218 lines (217 loc) • 9.54 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getQuerySensibleID = exports.getQueryGenesis = exports.getQueryCodehash = exports.updateScript = exports.parseDataPart = exports.newDataPart = exports.getSensibleID = exports.getMetaidOutpoint = exports.getContractCodeHash = exports.getContractCode = exports.getNftAddress = exports.getTotalSupply = exports.getNftID = exports.getTokenIndex = exports.getGenesisHash = exports.EMPTY_ADDRESS = exports.GENESIS_TOKEN_ID = exports.PROTO_VERSION = exports.NFT_OP_TYPE = void 0;
const mvc = require("../../mvc");
const proto = require("../../common/protoheader");
const Utils = require("../../common/utils");
const scryptlib_1 = require("../../scryptlib");
const BN = require("../../bn.js");
const tokenUtil_1 = require("../../common/tokenUtil");
var NFT_OP_TYPE;
(function (NFT_OP_TYPE) {
NFT_OP_TYPE[NFT_OP_TYPE["TRANSFER"] = 1] = "TRANSFER";
NFT_OP_TYPE[NFT_OP_TYPE["UNLOCK_FROM_CONTRACT"] = 2] = "UNLOCK_FROM_CONTRACT";
})(NFT_OP_TYPE = exports.NFT_OP_TYPE || (exports.NFT_OP_TYPE = {}));
exports.PROTO_VERSION = 1;
// <type specific data> + <proto header>
// <proto header> = <type(4 bytes)> + <'sensible'(8 bytes)>
//<nft type specific data> = <metaid_outpoint(36 bytes)> + <address(20 bytes)> + <totalSupply(8 bytes) + <tokenIndex(8 bytes)> + <genesisHash<20 bytes>) + + <sensibleID(36 bytes)>
const SENSIBLE_ID_LEN = 36;
const GENESIS_HASH_LEN = 20;
const TOKEN_INDEX_LEN = 8;
const NFT_ID_LEN = 20;
const TOTAL_SUPPLY_LEN = 8;
const NFT_ADDRESS_LEN = 20;
const METAID_OUTPOINT_LEN = 36;
const SENSIBLE_ID_OFFSET = SENSIBLE_ID_LEN + proto.getHeaderLen();
const GENESIS_HASH_OFFSET = SENSIBLE_ID_OFFSET + GENESIS_HASH_LEN;
const TOKEN_INDEX_OFFSET = GENESIS_HASH_OFFSET + TOKEN_INDEX_LEN;
const TOTAL_SUPPLY_OFFSET = TOKEN_INDEX_OFFSET + TOTAL_SUPPLY_LEN;
const NFT_ADDRESS_OFFSET = TOTAL_SUPPLY_OFFSET + NFT_ADDRESS_LEN;
const METAID_OUTPOINT_OFFSET = NFT_ADDRESS_OFFSET + METAID_OUTPOINT_LEN;
const DATA_LEN = METAID_OUTPOINT_OFFSET;
// const OP_PUSH_LEN = 2
// const DATA_LEN = METAID_OUTPOINT_OFFSET + OP_PUSH_LEN
exports.GENESIS_TOKEN_ID = Buffer.alloc(NFT_ID_LEN, 0);
exports.EMPTY_ADDRESS = Buffer.alloc(NFT_ADDRESS_LEN, 0);
function getGenesisHash(script) {
return script
.slice(script.length - GENESIS_HASH_OFFSET, script.length - GENESIS_HASH_OFFSET + GENESIS_HASH_LEN)
.toString('hex');
}
exports.getGenesisHash = getGenesisHash;
function getTokenIndex(script) {
if (script.length < TOKEN_INDEX_OFFSET)
return BN.Zero;
return BN.fromBuffer(script.slice(script.length - TOKEN_INDEX_OFFSET, script.length - TOKEN_INDEX_OFFSET + TOKEN_INDEX_LEN), { endian: 'little' });
}
exports.getTokenIndex = getTokenIndex;
// sensibleID
function getNftID(script) {
return mvc.crypto.Hash.sha256ripemd160(script.slice(script.length - TOKEN_INDEX_OFFSET, script.length - proto.getHeaderLen()));
}
exports.getNftID = getNftID;
function getTotalSupply(script) {
if (script.length < TOTAL_SUPPLY_OFFSET)
return BN.Zero;
return BN.fromBuffer(script.slice(script.length - TOTAL_SUPPLY_OFFSET, script.length - TOTAL_SUPPLY_OFFSET + TOTAL_SUPPLY_LEN), { endian: 'little' });
}
exports.getTotalSupply = getTotalSupply;
function getNftAddress(script) {
if (script.length < NFT_ADDRESS_OFFSET)
return '';
return script
.slice(script.length - NFT_ADDRESS_OFFSET, script.length - NFT_ADDRESS_OFFSET + NFT_ADDRESS_LEN)
.toString('hex');
}
exports.getNftAddress = getNftAddress;
function getContractCode(script) {
return script.slice(0, script.length - DATA_LEN - Utils.getVarPushdataHeader(DATA_LEN).length);
}
exports.getContractCode = getContractCode;
function getContractCodeHash(script) {
return mvc.crypto.Hash.sha256ripemd160(getContractCode(script));
}
exports.getContractCodeHash = getContractCodeHash;
function getMetaidOutpoint(script0) {
if (script0.length < METAID_OUTPOINT_OFFSET)
return { txid: '', index: 0 };
let script = Buffer.from(script0);
let metaidOutpointBuf = script.slice(script.length - METAID_OUTPOINT_OFFSET, script.length - METAID_OUTPOINT_OFFSET + METAID_OUTPOINT_LEN);
let txid = metaidOutpointBuf.slice(0, 32).reverse().toString('hex'); //reverse会改变原对象
let index = metaidOutpointBuf.readUIntLE(32, 4);
let outpoint = { txid, index };
return outpoint;
}
exports.getMetaidOutpoint = getMetaidOutpoint;
function getSensibleID(script0) {
if (script0.length < SENSIBLE_ID_OFFSET)
return { txid: '', index: 0 };
let script = Buffer.from(script0);
let sensibleIDBuf = script.slice(script.length - SENSIBLE_ID_OFFSET, script.length - SENSIBLE_ID_OFFSET + SENSIBLE_ID_LEN);
let txid = sensibleIDBuf.slice(0, 32).reverse().toString('hex'); //reverse会改变原对象
let index = sensibleIDBuf.readUIntLE(32, 4);
let outpoint = { txid, index };
return outpoint;
}
exports.getSensibleID = getSensibleID;
function newDataPart({ metaidOutpoint, nftAddress, totalSupply, tokenIndex, genesisHash, sensibleID, protoVersion, protoType, }) {
let metaidOutpointBuf = Buffer.alloc(METAID_OUTPOINT_LEN, 0);
if (metaidOutpoint && metaidOutpoint.txid) {
const txidBuf = Buffer.from(metaidOutpoint.txid, 'hex').reverse();
const indexBuf = Buffer.alloc(4, 0);
indexBuf.writeUInt32LE(metaidOutpoint.index);
metaidOutpointBuf = Buffer.concat([txidBuf, indexBuf]);
}
let nftAddressBuf = Buffer.alloc(NFT_ADDRESS_LEN, 0);
if (nftAddress) {
// nftAddressBuf.write(nftAddress, 'hex')
nftAddressBuf = Buffer.from(nftAddress, 'hex');
}
let totalSupplyBuf = Buffer.alloc(TOTAL_SUPPLY_LEN, 0);
if (totalSupply) {
totalSupplyBuf = totalSupply
.toBuffer({ endian: 'little', size: TOTAL_SUPPLY_LEN })
.slice(0, TOTAL_SUPPLY_LEN);
}
let tokenIndexBuf = Buffer.alloc(TOKEN_INDEX_LEN, 0);
if (tokenIndex) {
tokenIndexBuf = tokenIndex.toBuffer({
endian: 'little',
size: TOKEN_INDEX_LEN,
});
}
const genesisHashBuf = Buffer.alloc(GENESIS_HASH_LEN, 0);
if (genesisHash) {
genesisHashBuf.write(genesisHash, 'hex');
}
let sensibleIDBuf = Buffer.alloc(SENSIBLE_ID_LEN, 0);
if (sensibleID) {
const txidBuf = Buffer.from(sensibleID.txid, 'hex').reverse();
const indexBuf = Buffer.alloc(4, 0);
indexBuf.writeUInt32LE(sensibleID.index);
sensibleIDBuf = Buffer.concat([txidBuf, indexBuf]);
}
const protoVersionBuf = Buffer.alloc(proto.PROTO_VERSION_LEN);
if (protoVersion) {
protoVersionBuf.writeUInt32LE(protoVersion);
}
const protoTypeBuf = Buffer.alloc(proto.PROTO_TYPE_LEN, 0);
if (protoType) {
protoTypeBuf.writeUInt32LE(protoType);
}
const buf = Buffer.concat([
metaidOutpointBuf,
nftAddressBuf,
totalSupplyBuf,
tokenIndexBuf,
genesisHashBuf,
sensibleIDBuf,
protoVersionBuf,
protoTypeBuf,
proto.PROTO_FLAG,
]);
return (0, tokenUtil_1.buildScriptData)(buf);
}
exports.newDataPart = newDataPart;
function parseDataPart(scriptBuf) {
let metaidOutpoint = getMetaidOutpoint(scriptBuf);
let nftAddress = getNftAddress(scriptBuf);
let totalSupply = getTotalSupply(scriptBuf);
let tokenIndex = getTokenIndex(scriptBuf);
let genesisHash = getGenesisHash(scriptBuf);
let sensibleID = getSensibleID(scriptBuf);
let protoVersion = proto.getProtoVersion(scriptBuf);
let protoType = proto.getProtoType(scriptBuf);
// const scriptHexLen = scriptBuf.toString('hex').length
// const scriptLen = scriptBuf.length
// const protoVersion1 = proto.getProtoVersion(scriptBuf)
// const protoVersion2 = scriptBuf.toString('hex').slice(scriptHexLen - 40, scriptHexLen - 32)
// const metacontract = Buffer.from('metacontract')
// const metacontract2 = proto.getFlag(scriptBuf)
// console.log(
// 'parsing',
// scriptBuf.toString('hex'),
// scriptHexLen,
// scriptLen,
// protoVersion1,
// protoVersion2,
// metacontract.toString('hex'),
// metacontract2.toString('hex'),
// proto.PROTO_FLAG_LEN,
// proto.PROTO_FLAG.toString('hex')
// )
return {
metaidOutpoint,
nftAddress,
totalSupply,
tokenIndex,
genesisHash,
sensibleID,
protoVersion,
protoType,
};
}
exports.parseDataPart = parseDataPart;
function updateScript(scriptBuf, dataPartObj) {
const firstBuf = scriptBuf.slice(0, scriptBuf.length - DATA_LEN);
const dataPart = newDataPart(dataPartObj);
return Buffer.concat([firstBuf, dataPart]);
}
exports.updateScript = updateScript;
function getQueryCodehash(script) {
return (0, scryptlib_1.toHex)(getContractCodeHash(script));
}
exports.getQueryCodehash = getQueryCodehash;
function getQueryGenesis(script) {
return (0, scryptlib_1.toHex)(mvc.crypto.Hash.sha256ripemd160(script.slice(script.length - GENESIS_HASH_OFFSET, script.length - proto.getHeaderLen())
// [len - (20+36+25), len - 25]
));
}
exports.getQueryGenesis = getQueryGenesis;
function getQuerySensibleID(script0) {
let script = Buffer.from(script0);
let sensibleIDBuf = script.slice(script.length - SENSIBLE_ID_OFFSET, script.length - SENSIBLE_ID_OFFSET + SENSIBLE_ID_LEN);
return (0, scryptlib_1.toHex)(sensibleIDBuf);
}
exports.getQuerySensibleID = getQuerySensibleID;