diff options
Diffstat (limited to 'src/ts/0x.js.ts')
| -rw-r--r-- | src/ts/0x.js.ts | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/ts/0x.js.ts b/src/ts/0x.js.ts index ead1f56df..82dbce22d 100644 --- a/src/ts/0x.js.ts +++ b/src/ts/0x.js.ts @@ -1,8 +1,12 @@ import * as BigNumber from 'bignumber.js'; +import * as BN from 'bn.js'; import * as ethUtil from 'ethereumjs-util'; +import * as ethABI from 'ethereumjs-abi'; import * as _ from 'lodash'; +import {constants} from './utils/constants'; import {assert} from './utils/assert'; import {ECSignatureSchema} from './schemas/ec_signature_schema'; +import {SolidityTypes} from './types'; /** * Elliptic Curve signature @@ -16,6 +20,42 @@ export interface ECSignature { const MAX_DIGITS_IN_UNSIGNED_256_INT = 78; export class ZeroEx { + public static getOrderHash(exchangeContractAddr: string, makerAddr: string, takerAddr: string, + depositTokenAddr: string, receiveTokenAddr: string, feeRecipient: string, + depositAmt: BigNumber.BigNumber, receiveAmt: BigNumber.BigNumber, + makerFee: BigNumber.BigNumber, takerFee: BigNumber.BigNumber, + expiration: BigNumber.BigNumber, salt: BigNumber.BigNumber): string { + takerAddr = takerAddr !== '' ? takerAddr : constants.NULL_ADDRESS; + assert.isETHAddressHex('exchangeContractAddr', exchangeContractAddr); + assert.isETHAddressHex('makerAddr', makerAddr); + assert.isETHAddressHex('takerAddr', takerAddr); + assert.isETHAddressHex('depositTokenAddr', depositTokenAddr); + assert.isETHAddressHex('receiveTokenAddr', receiveTokenAddr); + assert.isETHAddressHex('feeRecipient', feeRecipient); + assert.isBigNumber('depositAmt', depositAmt); + assert.isBigNumber('receiveAmt', receiveAmt); + assert.isBigNumber('makerFee', makerFee); + assert.isBigNumber('takerFee', takerFee); + assert.isBigNumber('expiration', expiration); + assert.isBigNumber('salt', salt); + const orderParts = [ + {value: exchangeContractAddr, type: SolidityTypes.address}, + {value: makerAddr, type: SolidityTypes.address}, + {value: takerAddr, type: SolidityTypes.address}, + {value: depositTokenAddr, type: SolidityTypes.address}, + {value: receiveTokenAddr, type: SolidityTypes.address}, + {value: feeRecipient, type: SolidityTypes.address}, + {value: new BN(depositAmt.toString(), 10), type: SolidityTypes.uint256}, + {value: new BN(receiveAmt.toString(), 10), type: SolidityTypes.uint256}, + {value: new BN(makerFee.toString(), 10), type: SolidityTypes.uint256}, + {value: new BN(takerFee.toString(), 10), type: SolidityTypes.uint256}, + {value: new BN(expiration.toString(), 10), type: SolidityTypes.uint256}, + {value: new BN(salt.toString(), 10), type: SolidityTypes.uint256}, + ]; + const hashBuff = ethABI.soliditySHA3(_.map(orderParts, 'type'), _.map(orderParts, 'value')); + const buffHashHex = ethUtil.bufferToHex(hashBuff); + return buffHashHex; + } /** * Verifies that the elliptic curve signature `signature` was generated * by signing `data` with the private key corresponding to the `signerAddressHex` address. |