@f5i23q999d/cow-sdk/dist/cow-shed/contracts/CoWShedHooks.js

<p align="center"> <img width="400" src="https://github.com/cowprotocol/cow-sdk/raw/main/docs/images/CoW.png" /> </p>

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CowShedHooks = exports.COW_SHED_712_TYPES = exports.COW_SHED_PROXY_INIT_CODE = void 0;
const contracts_1 = require("@cowprotocol/contracts");
const utils_1 = require("ethers/lib/utils");
const common_1 = require("../../common/index.js");
const utils_2 = require("./utils.js");
exports.COW_SHED_PROXY_INIT_CODE = '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';
exports.COW_SHED_712_TYPES = {
    ExecuteHooks: [
        { type: 'Call[]', name: 'calls' },
        { type: 'bytes32', name: 'nonce' },
        { type: 'uint256', name: 'deadline' },
    ],
    Call: [
        { type: 'address', name: 'target' },
        { type: 'uint256', name: 'value' },
        { type: 'bytes', name: 'callData' },
        { type: 'bool', name: 'allowFailure' },
        { type: 'bool', name: 'isDelegateCall' },
    ],
};
class CowShedHooks {
    chainId;
    customOptions;
    constructor(chainId, customOptions) {
        this.chainId = chainId;
        this.customOptions = customOptions;
    }
    proxyOf(user) {
        const salt = utils_1.defaultAbiCoder.encode(['address'], [user]);
        const initCodeHash = (0, utils_1.solidityKeccak256)(['bytes', 'bytes'], [
            this.proxyCreationCode(),
            utils_1.defaultAbiCoder.encode(['address', 'address'], [this.getImplementationAddress(), user]),
        ]);
        return (0, utils_1.getCreate2Address)(this.getFactoryAddress(), salt, initCodeHash);
    }
    encodeExecuteHooksForFactory(calls, nonce, deadline, user, signature) {
        return (0, utils_2.getCoWShedFactoryInterface)().encodeFunctionData('executeHooks', [calls, nonce, deadline, user, signature]);
    }
    async signCalls(calls, nonce, deadline, signer, signingScheme) {
        const user = await signer.getAddress();
        const proxy = this.proxyOf(user);
        const { domain, types, message } = this.infoToSign(calls, nonce, deadline, proxy);
        return await ecdsaSignTypedData(signingScheme, signer, domain, types, message);
    }
    infoToSign(calls, nonce, deadline, proxy) {
        const message = {
            calls,
            nonce,
            deadline,
        };
        return { domain: this.getDomain(proxy), types: exports.COW_SHED_712_TYPES, message };
    }
    getDomain(proxy) {
        return {
            name: 'COWShed',
            version: '1.0.0',
            chainId: this.chainId,
            verifyingContract: proxy,
        };
    }
    proxyCreationCode() {
        return this.customOptions?.proxyCreationCode ?? exports.COW_SHED_PROXY_INIT_CODE;
    }
    getFactoryAddress() {
        return this.customOptions?.factoryAddress ?? common_1.COW_SHED_FACTORY;
    }
    getImplementationAddress() {
        return this.customOptions?.implementationAddress ?? common_1.COW_SHED_IMPLEMENTATION;
    }
}
exports.CowShedHooks = CowShedHooks;
// code copied from @cow/contract (not exported there)
async function ecdsaSignTypedData(scheme, owner, domain, types, data) {
    let signature = null;
    switch (scheme) {
        case contracts_1.SigningScheme.EIP712:
            if (!(0, contracts_1.isTypedDataSigner)(owner)) {
                throw new Error('signer does not support signing typed data');
            }
            signature = await owner._signTypedData(domain, types, data);
            break;
        case contracts_1.SigningScheme.ETHSIGN:
            signature = await owner.signMessage((0, utils_1.arrayify)((0, contracts_1.hashTypedData)(domain, types, data)));
            break;
        default:
            throw new Error('invalid signing scheme');
    }
    // Passing the signature through split/join to normalize the `v` byte.
    // Some wallets do not pad it with `27`, which causes a signature failure
    // `splitSignature` pads it if needed, and `joinSignature` simply puts it back together
    return (0, utils_1.joinSignature)((0, utils_1.splitSignature)(signature));
}
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