@btc-vision/transaction
Version:
OPNet transaction library allows you to create and sign transactions for the OPNet network.
68 lines (67 loc) • 2.69 kB
JavaScript
import { crypto, networks, opcodes, script } from '@btc-vision/bitcoin';
import { Generator } from '../Generator.js';
export const OPNET_DEPLOYMENT_VERSION = 0x00;
export const versionBuffer = Buffer.from([OPNET_DEPLOYMENT_VERSION]);
export class DeploymentGenerator extends Generator {
constructor(senderPubKey, contractSaltPubKey, network = networks.bitcoin) {
super(senderPubKey, contractSaltPubKey, network);
}
compile(contractBytecode, contractSalt, challenge, maxPriority, calldata, features) {
const asm = this.getAsm(contractBytecode, contractSalt, challenge, maxPriority, calldata, features);
const compiled = script.compile(asm);
const decompiled = script.decompile(compiled);
if (!decompiled) {
throw new Error('Failed to decompile script??');
}
return compiled;
}
getAsm(contractBytecode, contractSalt, challenge, maxPriority, calldata, features) {
if (!this.contractSaltPubKey)
throw new Error('Contract salt public key not set');
const dataChunks = this.splitBufferIntoChunks(contractBytecode);
const calldataChunks = calldata ? this.splitBufferIntoChunks(calldata) : [];
const featuresList = [];
const featureData = [];
if (features) {
for (let i = 0; i < features.length; i++) {
const feature = features[i];
featuresList.push(feature.opcode);
const data = this.encodeFeature(feature);
featureData.push(...data);
}
}
const compiledData = [
this.getHeader(maxPriority, featuresList),
opcodes.OP_TOALTSTACK,
challenge.publicKey.originalPublicKeyBuffer(),
opcodes.OP_TOALTSTACK,
challenge.solution,
opcodes.OP_TOALTSTACK,
this.xSenderPubKey,
opcodes.OP_DUP,
opcodes.OP_HASH256,
crypto.hash256(this.xSenderPubKey),
opcodes.OP_EQUALVERIFY,
opcodes.OP_CHECKSIGVERIFY,
this.contractSaltPubKey,
opcodes.OP_CHECKSIGVERIFY,
opcodes.OP_HASH256,
crypto.hash256(contractSalt),
opcodes.OP_EQUALVERIFY,
opcodes.OP_DEPTH,
opcodes.OP_1,
opcodes.OP_NUMEQUAL,
opcodes.OP_IF,
Generator.MAGIC,
...featureData,
opcodes.OP_0,
...calldataChunks,
opcodes.OP_1NEGATE,
...dataChunks,
opcodes.OP_ELSE,
opcodes.OP_1,
opcodes.OP_ENDIF,
];
return compiledData.flat();
}
}