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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| import { | ||
| Address, | ||
| encodeFunctionData, | ||
| encodePacked, | ||
| Hex, | ||
| parseAbi, | ||
| size, | ||
| } from "viem"; | ||
| import { MetaTransaction, OperationType } from "../types"; | ||
|
|
||
| export const MULTI_SEND_ABI = ["function multiSend(bytes memory transactions)"]; | ||
|
|
||
| const MULTISEND_141 = "0x38869bf66a61cF6bDB996A6aE40D5853Fd43B526"; | ||
| const MULTISEND_CALLONLY_141 = "0x9641d764fc13c8B624c04430C7356C1C7C8102e2"; | ||
|
|
||
| /// Encodes the transaction as packed bytes of: | ||
| /// - `operation` as a `uint8` with `0` for a `call` or `1` for a `delegatecall` (=> 1 byte), | ||
| /// - `to` as an `address` (=> 20 bytes), | ||
| /// - `value` as a `uint256` (=> 32 bytes), | ||
| /// - length of `data` as a `uint256` (=> 32 bytes), | ||
| /// - `data` as `bytes`. | ||
| const encodeMetaTx = (tx: MetaTransaction): Hex => | ||
| encodePacked( | ||
| ["uint8", "address", "uint256", "uint256", "bytes"], | ||
| [ | ||
| tx.operation || OperationType.Call, | ||
| tx.to as Address, | ||
| BigInt(tx.value), | ||
| BigInt(size(tx.data as Hex)), | ||
| tx.data as Hex, | ||
| ] | ||
| ); | ||
|
|
||
| const remove0x = (hexString: Hex) => hexString.slice(2); | ||
|
|
||
| // Encodes a batch of module transactions into a single multiSend module transaction. | ||
| // A module transaction is an object with fields corresponding to a Gnosis Safe's (i.e., Zodiac IAvatar's) `execTransactionFromModule` method parameters. | ||
| export function encodeMulti( | ||
| transactions: readonly MetaTransaction[], | ||
| multiSendContractAddress: string = transactions.some( | ||
| (t) => t.operation === OperationType.DelegateCall | ||
| ) | ||
| ? MULTISEND_141 | ||
| : MULTISEND_CALLONLY_141 | ||
| ): MetaTransaction { | ||
| const encodedTransactions = | ||
| "0x" + transactions.map(encodeMetaTx).map(remove0x).join(""); | ||
|
|
||
| return { | ||
| operation: OperationType.DelegateCall, | ||
| to: multiSendContractAddress, | ||
| value: "0x00", | ||
| data: encodeFunctionData({ | ||
| abi: parseAbi(MULTI_SEND_ABI), | ||
| functionName: "multiSend", | ||
| args: [encodedTransactions], | ||
| }), | ||
| }; | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| import { encodeMulti } from "../src/lib/multisend"; | ||
|
|
||
| describe("Multisend", () => { | ||
| it("encodeMulti", () => { | ||
| const tx1 = { | ||
| to: "0x0000000000000000000000000000000000000001", | ||
| value: "1", | ||
| data: "0x12", | ||
| }; | ||
| const tx2 = { | ||
| to: "0x0000000000000000000000000000000000000002", | ||
| value: "2", | ||
| data: "0x34", | ||
| }; | ||
| expect(encodeMulti([tx1, tx2])).toEqual({ | ||
| data: "0x8d80ff0a000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000ac000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000011200000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000001340000000000000000000000000000000000000000", | ||
| operation: 1, | ||
| to: "0x9641d764fc13c8B624c04430C7356C1C7C8102e2", | ||
| value: "0x00", | ||
| }); | ||
| }); | ||
| }); |
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