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Implement Centrifuge EVM address support (#4039)
* Implement Centrifuge EVM address support * fix: merge
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,64 @@ | ||
import { Buffer } from "buffer"; | ||
import { encodeAddress, decodeAddress } from "@polkadot/util-crypto"; | ||
import { getAddress as getEvmAddress } from "ethers"; | ||
import { isPolkadotAddress } from "./viewfuncs"; | ||
import { isEthereumAddress } from "@polkadot/util-crypto"; | ||
import isCentrifuge from "./isCentrifuge"; | ||
|
||
const CENTRIFUGE_ADDRESS_PREFIX = 36; | ||
const zeroBytes = Buffer.alloc(6); | ||
const chainId = Buffer.from("07ef", "hex"); | ||
const evmTagBytes = Buffer.from("EVM\0"); | ||
const suffixBytes = Buffer.concat([zeroBytes, chainId, evmTagBytes]); | ||
|
||
export function safeConvertAddressH160(value) { | ||
try { | ||
return getEvmAddress(value?.toLowerCase()); | ||
} catch { | ||
return null; | ||
} | ||
} | ||
|
||
export function evmToSubstrateAddress(address) { | ||
if (!address) { | ||
return; | ||
} | ||
if (isPolkadotAddress(address)) { | ||
return address; | ||
} | ||
const addressBytes = Buffer.from(address.slice(2), "hex"); | ||
const publicKey = Buffer.concat([addressBytes, suffixBytes]); | ||
return encodeAddress(new Uint8Array(publicKey), CENTRIFUGE_ADDRESS_PREFIX); | ||
} | ||
|
||
export function substrateToEvmAddress(address) { | ||
if (!address) { | ||
return; | ||
} | ||
if (isEthereumAddress(address)) { | ||
return address; | ||
} | ||
const decodedBytes = decodeAddress(address); | ||
const addressBytes = decodedBytes.slice(0, -suffixBytes.length); | ||
return ( | ||
safeConvertAddressH160(Buffer.from(addressBytes).toString("hex")) ?? "" | ||
); | ||
} | ||
|
||
export function checkIfShouldConvertToEvmAddress(address) { | ||
if (!isCentrifuge() || !isPolkadotAddress(address)) { | ||
return false; | ||
} | ||
|
||
try { | ||
const decodedBytes = decodeAddress(address); | ||
const addressHex = Buffer.from(decodedBytes).toString("hex"); | ||
if (addressHex.endsWith(suffixBytes.toString("hex"))) { | ||
return true; | ||
} | ||
} catch (e) { | ||
// ignore | ||
} | ||
|
||
return false; | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,5 @@ | ||
import Chains from "./consts/chains"; | ||
|
||
export default function isCentrifuge() { | ||
return Chains.centrifuge === process.env.NEXT_PUBLIC_CHAIN; | ||
} |
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