@bitgo/utxo-lib
Version:
Client-side Bitcoin JavaScript library
145 lines • 21.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ZcashPsbt = void 0;
const UtxoPsbt_1 = require("../UtxoPsbt");
const ZcashTransaction_1 = require("./ZcashTransaction");
const __1 = require("../../");
const bip174_1 = require("bip174");
const types = require("bitcoinjs-lib/src/types");
const PsbtUtil_1 = require("../PsbtUtil");
const typeforce = require('typeforce');
const CONSENSUS_BRANCH_ID_KEY = Buffer.concat([
Buffer.of(0xfc),
Buffer.of(0x05),
Buffer.from(PsbtUtil_1.PSBT_PROPRIETARY_IDENTIFIER),
Buffer.of(PsbtUtil_1.ProprietaryKeySubtype.ZEC_CONSENSUS_BRANCH_ID),
]);
class ZcashPsbt extends UtxoPsbt_1.UtxoPsbt {
static transactionFromBuffer(buffer, network) {
return ZcashTransaction_1.ZcashTransaction.fromBuffer(buffer, false, 'bigint', network);
}
static createPsbt(opts, data) {
return new ZcashPsbt(opts, data || new bip174_1.Psbt(new __1.PsbtTransaction({ tx: new ZcashTransaction_1.ZcashTransaction(opts.network) })));
}
/**
* In version < 5 of Zcash transactions, the consensus branch ID is not serialized in the transaction
* whereas in version 5 it is. If the transaction is less than a version 5, set the consensus branch id
* in the global map in the psbt. If it is a version 5 transaction, throw an error if the consensus
* branch id is set in the psbt (because it should be on the transaction already).
* @param buffer Psbt buffer
* @param opts options
*/
static fromBuffer(buffer, opts) {
const psbt = super.fromBuffer(buffer, opts);
// Read `consensusBranchId` from the global-map
let consensusBranchId = undefined;
psbt.data.globalMap.unknownKeyVals?.forEach(({ key, value }, i) => {
if (key.equals(CONSENSUS_BRANCH_ID_KEY)) {
consensusBranchId = value.readUint32LE();
}
});
switch (psbt.tx.version) {
case 4:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_CANOPY:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_NU5:
if (!consensusBranchId || !psbt.data.globalMap.unknownKeyVals) {
throw new Error('Could not find consensus branch id on psbt for version 4 Zcash transaction');
}
psbt.tx.consensusBranchId = consensusBranchId;
psbt.data.globalMap.unknownKeyVals = psbt.data.globalMap.unknownKeyVals.filter(({ key }) => key !== CONSENSUS_BRANCH_ID_KEY);
// Delete consensusBranchId from globalMap so that if we were to serialize the psbt again
// we would not add a duplicate key into the global map
psbt.data.globalMap.unknownKeyVals.pop();
return psbt;
case 5:
case ZcashTransaction_1.ZcashTransaction.VERSION5_BRANCH_NU5:
if (consensusBranchId) {
throw new Error('Found consensus branch id in psbt global-map for version 5 Zcash transaction');
}
return psbt;
default:
throw new Error(`Unsupported transaction version ${psbt.tx.version}`);
}
}
/**
* If it is a version 4 transaction, add the consensus branch id to
* the global map. If it is a version 5 transaction, just return the
* buffer because the consensus branch id is already serialized in
* the transaction.
*/
toBuffer() {
if (this.tx.version === 5 || this.tx.version >= ZcashTransaction_1.ZcashTransaction.VERSION5_BRANCH_NU5) {
return super.toBuffer();
}
// check to see if the consensus branch id is already in the global map
if (this.data.globalMap.unknownKeyVals?.some(({ key }) => key.equals(CONSENSUS_BRANCH_ID_KEY))) {
return super.toBuffer();
}
const value = Buffer.alloc(4);
value.writeUint32LE(this.tx.consensusBranchId);
this.addUnknownKeyValToGlobal({ key: CONSENSUS_BRANCH_ID_KEY, value });
if (!this.data.globalMap.unknownKeyVals) {
throw new Error('Failed adding consensus branch id to unknownKeyVals');
}
const buff = super.toBuffer();
this.data.globalMap.unknownKeyVals.pop();
return buff;
}
toHex() {
return this.toBuffer().toString('hex');
}
toBase64() {
return this.toBuffer().toString('base64');
}
setVersion(version, overwinter = true) {
typeforce(types.UInt32, version);
this.tx.overwintered = overwinter ? 1 : 0;
this.tx.version = version;
return this;
}
setDefaultsForVersion(network, version) {
switch (version) {
case 4:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_CANOPY:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_NU5:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_NU6:
case ZcashTransaction_1.ZcashTransaction.VERSION4_BRANCH_NU6_1:
this.setVersion(4);
break;
case 5:
case ZcashTransaction_1.ZcashTransaction.VERSION5_BRANCH_NU5:
case ZcashTransaction_1.ZcashTransaction.VERSION5_BRANCH_NU6:
case ZcashTransaction_1.ZcashTransaction.VERSION5_BRANCH_NU6_1:
this.setVersion(5);
break;
default:
throw new Error(`invalid version ${version}`);
}
this.tx.versionGroupId = (0, ZcashTransaction_1.getDefaultVersionGroupIdForVersion)(version);
this.tx.consensusBranchId = (0, ZcashTransaction_1.getDefaultConsensusBranchIdForVersion)(network, version);
}
setPropertyCheckSignatures(propName, value) {
if (this.tx[propName] === value) {
return;
}
this.checkForSignatures(propName);
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);
}
clone() {
return ZcashPsbt.fromBuffer(this.toBuffer(), { network: this.network });
}
}
exports.ZcashPsbt = ZcashPsbt;
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{ PsbtOpts, UtxoPsbt } from '../UtxoPsbt';\nimport {\n  getDefaultConsensusBranchIdForVersion,\n  getDefaultVersionGroupIdForVersion,\n  ZcashTransaction,\n} from './ZcashTransaction';\nimport { Network, PsbtTransaction } from '../../';\nimport { Psbt as PsbtBase } from 'bip174';\nimport * as types from 'bitcoinjs-lib/src/types';\nimport { ProprietaryKeySubtype, PSBT_PROPRIETARY_IDENTIFIER } from '../PsbtUtil';\nconst typeforce = require('typeforce');\n\nconst CONSENSUS_BRANCH_ID_KEY = Buffer.concat([\n  Buffer.of(0xfc),\n  Buffer.of(0x05),\n  Buffer.from(PSBT_PROPRIETARY_IDENTIFIER),\n  Buffer.of(ProprietaryKeySubtype.ZEC_CONSENSUS_BRANCH_ID),\n]);\n\nexport class ZcashPsbt extends UtxoPsbt<ZcashTransaction<bigint>> {\n  protected static transactionFromBuffer(buffer: Buffer, network: Network): ZcashTransaction<bigint> {\n    return ZcashTransaction.fromBuffer<bigint>(buffer, false, 'bigint', network);\n  }\n\n  static createPsbt(opts: PsbtOpts, data?: PsbtBase): ZcashPsbt {\n    return new ZcashPsbt(\n      opts,\n      data || new PsbtBase(new PsbtTransaction({ tx: new ZcashTransaction<bigint>(opts.network) }))\n    );\n  }\n\n  /**\n   * In version < 5 of Zcash transactions, the consensus branch ID is not serialized in the transaction\n   * whereas in version 5 it is. If the transaction is less than a version 5, set the consensus branch id\n   * in the global map in the psbt. If it is a version 5 transaction, throw an error if the consensus\n   * branch id is set in the psbt (because it should be on the transaction already).\n   * @param buffer Psbt buffer\n   * @param opts options\n   */\n  static fromBuffer(buffer: Buffer, opts: PsbtOpts): UtxoPsbt<ZcashTransaction<bigint>> {\n    const psbt = super.fromBuffer(buffer, opts) as ZcashPsbt;\n\n    // Read `consensusBranchId` from the global-map\n    let consensusBranchId: number | undefined = undefined;\n    psbt.data.globalMap.unknownKeyVals?.forEach(({ key, value }, i) => {\n      if (key.equals(CONSENSUS_BRANCH_ID_KEY)) {\n        consensusBranchId = value.readUint32LE();\n      }\n    });\n    switch (psbt.tx.version) {\n      case 4:\n      case ZcashTransaction.VERSION4_BRANCH_CANOPY:\n      case ZcashTransaction.VERSION4_BRANCH_NU5:\n        if (!consensusBranchId || !psbt.data.globalMap.unknownKeyVals) {\n          throw new Error('Could not find consensus branch id on psbt for version 4 Zcash transaction');\n        }\n        psbt.tx.consensusBranchId = consensusBranchId;\n        psbt.data.globalMap.unknownKeyVals = psbt.data.globalMap.unknownKeyVals.filter(\n          ({ key }) => key !== CONSENSUS_BRANCH_ID_KEY\n        );\n\n        // Delete consensusBranchId from globalMap so that if we were to serialize the psbt again\n        // we would not add a duplicate key into the global map\n        psbt.data.globalMap.unknownKeyVals.pop();\n        return psbt;\n      case 5:\n      case ZcashTransaction.VERSION5_BRANCH_NU5:\n        if (consensusBranchId) {\n          throw new Error('Found consensus branch id in psbt global-map for version 5 Zcash transaction');\n        }\n        return psbt;\n      default:\n        throw new Error(`Unsupported transaction version ${psbt.tx.version}`);\n    }\n  }\n\n  /**\n   * If it is a version 4 transaction, add the consensus branch id to\n   * the global map. If it is a version 5 transaction, just return the\n   * buffer because the consensus branch id is already serialized in\n   * the transaction.\n   */\n  toBuffer(): Buffer {\n    if (this.tx.version === 5 || this.tx.version >= ZcashTransaction.VERSION5_BRANCH_NU5) {\n      return super.toBuffer();\n    }\n    // check to see if the consensus branch id is already in the global map\n    if (this.data.globalMap.unknownKeyVals?.some(({ key }) => key.equals(CONSENSUS_BRANCH_ID_KEY))) {\n      return super.toBuffer();\n    }\n\n    const value = Buffer.alloc(4);\n    value.writeUint32LE(this.tx.consensusBranchId);\n    this.addUnknownKeyValToGlobal({ key: CONSENSUS_BRANCH_ID_KEY, value });\n    if (!this.data.globalMap.unknownKeyVals) {\n      throw new Error('Failed adding consensus branch id to unknownKeyVals');\n    }\n    const buff = super.toBuffer();\n    this.data.globalMap.unknownKeyVals.pop();\n    return buff;\n  }\n\n  toHex(): string {\n    return this.toBuffer().toString('hex');\n  }\n\n  toBase64(): string {\n    return this.toBuffer().toString('base64');\n  }\n\n  setVersion(version: number, overwinter = true): this {\n    typeforce(types.UInt32, version);\n    this.tx.overwintered = overwinter ? 1 : 0;\n    this.tx.version = version;\n    return this;\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      case ZcashTransaction.VERSION4_BRANCH_NU6:\n      case ZcashTransaction.VERSION4_BRANCH_NU6_1:\n        this.setVersion(4);\n        break;\n      case 5:\n      case ZcashTransaction.VERSION5_BRANCH_NU5:\n      case ZcashTransaction.VERSION5_BRANCH_NU6:\n      case ZcashTransaction.VERSION5_BRANCH_NU6_1:\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 setPropertyCheckSignatures(propName: keyof ZcashTransaction<bigint>, value: unknown) {\n    if (this.tx[propName] === value) {\n      return;\n    }\n    this.checkForSignatures(propName);\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  clone(): this {\n    return ZcashPsbt.fromBuffer(this.toBuffer(), { network: this.network }) as this;\n  }\n}\n"]}