@bitgo-beta/utxo-lib
Version:
Client-side Bitcoin JavaScript library
105 lines • 14.7 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ZcashTransactionBuilder = void 0;
const types = require("bitcoinjs-lib/src/types");
const typeforce = require('typeforce');
const ZcashTransaction_1 = require("./ZcashTransaction");
const UtxoTransactionBuilder_1 = require("../UtxoTransactionBuilder");
const address_1 = require("./address");
class ZcashTransactionBuilder extends UtxoTransactionBuilder_1.UtxoTransactionBuilder {
constructor(network) {
super(network);
}
createInitialTransaction(network) {
return new ZcashTransaction_1.ZcashTransaction(network);
}
static fromTransaction(transaction, network, prevOutput) {
const txb = new ZcashTransactionBuilder(transaction.network);
// Copy transaction fields
txb.setVersion(transaction.version, !!transaction.overwintered);
txb.setLockTime(transaction.locktime);
// Copy Zcash overwinter fields. Omitted if the transaction builder is not for Zcash.
if (txb.tx.isOverwinterCompatible()) {
txb.setVersionGroupId(transaction.versionGroupId);
txb.setExpiryHeight(transaction.expiryHeight);
}
txb.setConsensusBranchId(transaction.consensusBranchId);
// Copy outputs (done first to avoid signature invalidation)
transaction.outs.forEach(function (txOut) {
txb.addOutput(txOut.script, txOut.value);
});
// Copy inputs
transaction.ins.forEach(function (txIn) {
txb.__addInputUnsafe(txIn.hash, txIn.index, {
sequence: txIn.sequence,
script: txIn.script,
witness: txIn.witness,
value: txIn.value,
});
});
return txb;
}
setVersion(version, overwinter = true) {
typeforce(types.UInt32, version);
this.tx.overwintered = overwinter ? 1 : 0;
this.tx.version = version;
}
setDefaultsForVersion(network, version) {
switch (version) {
case 4:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_CANOPY:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_NU5:
this.setVersion(4);
break;
case 5:
case ZcashTransaction_1.ZcashTransaction.VERSION5_BRANCH_NU5:
this.setVersion(5);
break;
default:
throw new Error(`invalid version ${version}`);
}
this.tx.versionGroupId = ZcashTransaction_1.getDefaultVersionGroupIdForVersion(version);
this.tx.consensusBranchId = ZcashTransaction_1.getDefaultConsensusBranchIdForVersion(network, version);
}
hasSignatures() {
return this.__INPUTS.some(function (input) {
return input.signatures !== undefined;
});
}
setPropertyCheckSignatures(propName, value) {
if (this.tx[propName] === value) {
return;
}
if (this.hasSignatures()) {
throw new Error(`Changing property ${propName} for a partially signed transaction would invalidate signatures`);
}
this.tx[propName] = value;
}
setConsensusBranchId(consensusBranchId) {
typeforce(types.UInt32, consensusBranchId);
this.setPropertyCheckSignatures('consensusBranchId', consensusBranchId);
}
setVersionGroupId(versionGroupId) {
typeforce(types.UInt32, versionGroupId);
this.setPropertyCheckSignatures('versionGroupId', versionGroupId);
}
setExpiryHeight(expiryHeight) {
typeforce(types.UInt32, expiryHeight);
this.setPropertyCheckSignatures('expiryHeight', expiryHeight);
}
build() {
return super.build();
}
buildIncomplete() {
return super.buildIncomplete();
}
addOutput(scriptPubKey, value) {
// Attempt to get a script if it's a base58 or bech32 address string
if (typeof scriptPubKey === 'string') {
scriptPubKey = address_1.toOutputScript(scriptPubKey, this.network);
}
return super.addOutput(scriptPubKey, value);
}
}
exports.ZcashTransactionBuilder = ZcashTransactionBuilder;
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Omitted if the transaction builder is not for Zcash.\n    if (txb.tx.isOverwinterCompatible()) {\n      txb.setVersionGroupId(transaction.versionGroupId);\n      txb.setExpiryHeight(transaction.expiryHeight);\n    }\n\n    txb.setConsensusBranchId(transaction.consensusBranchId);\n\n    // Copy outputs (done first to avoid signature invalidation)\n    transaction.outs.forEach(function (txOut) {\n      txb.addOutput(txOut.script, txOut.value);\n    });\n\n    // Copy inputs\n    transaction.ins.forEach(function (txIn) {\n      (txb as any).__addInputUnsafe(txIn.hash, txIn.index, {\n        sequence: txIn.sequence,\n        script: txIn.script,\n        witness: txIn.witness,\n        value: (txIn as any).value,\n      });\n    });\n\n    return txb;\n  }\n\n  setVersion(version: number, overwinter = true): void {\n    typeforce(types.UInt32, version);\n    this.tx.overwintered = overwinter ? 1 : 0;\n    this.tx.version = version;\n  }\n\n  setDefaultsForVersion(network: Network, version: number): void {\n    switch (version) {\n      case 4:\n      case ZcashTransaction.VERSION4_BRANCH_CANOPY:\n      case ZcashTransaction.VERSION4_BRANCH_NU5:\n        this.setVersion(4);\n        break;\n      case 5:\n      case ZcashTransaction.VERSION5_BRANCH_NU5:\n        this.setVersion(5);\n        break;\n      default:\n        throw new Error(`invalid version ${version}`);\n    }\n\n    this.tx.versionGroupId = getDefaultVersionGroupIdForVersion(version);\n    this.tx.consensusBranchId = getDefaultConsensusBranchIdForVersion(network, version);\n  }\n\n  private hasSignatures(): boolean {\n    return (this as any).__INPUTS.some(function (input: { signatures: unknown }) {\n      return input.signatures !== undefined;\n    });\n  }\n\n  private setPropertyCheckSignatures(propName: keyof ZcashTransaction<TNumber>, value: unknown) {\n    if (this.tx[propName] === value) {\n      return;\n    }\n    if (this.hasSignatures()) {\n      throw new Error(`Changing property ${propName} for a partially signed transaction would invalidate signatures`);\n    }\n    this.tx[propName] = value as any;\n  }\n\n  setConsensusBranchId(consensusBranchId: number): void {\n    typeforce(types.UInt32, consensusBranchId);\n    this.setPropertyCheckSignatures('consensusBranchId', consensusBranchId);\n  }\n\n  setVersionGroupId(versionGroupId: number): void {\n    typeforce(types.UInt32, versionGroupId);\n    this.setPropertyCheckSignatures('versionGroupId', versionGroupId);\n  }\n\n  setExpiryHeight(expiryHeight: number): void {\n    typeforce(types.UInt32, expiryHeight);\n    this.setPropertyCheckSignatures('expiryHeight', expiryHeight);\n  }\n\n  build(): ZcashTransaction<TNumber> {\n    return super.build() as ZcashTransaction<TNumber>;\n  }\n\n  buildIncomplete(): ZcashTransaction<TNumber> {\n    return super.buildIncomplete() as ZcashTransaction<TNumber>;\n  }\n\n  addOutput(scriptPubKey: string | Buffer, value: TNumber): number {\n    // Attempt to get a script if it's a base58 or bech32 address string\n    if (typeof scriptPubKey === 'string') {\n      scriptPubKey = toOutputScript(scriptPubKey, this.network as Network);\n    }\n\n    return super.addOutput(scriptPubKey, value);\n  }\n}\n"]}