[internal] Wanchain uses special reverse checksum format (#3216)

* ReverseCase

* Wanchain uses special reverse checksum format.

* Fix existing 6 wanchain assets, revert checksum format.

Co-authored-by: Catenocrypt <catenocrypt@users.noreply.github.com>

blockchains/wanchain/whitelist.json

@@ -1,8 +1,8 @@
 [
-    "0x0F2E7c0e904A525a24ff6F658053F6Ba5cE7a209",
-    "0x350BB91c9c8eF4E8c0E19FBDC6a90a24BCB1Ec2a",
-    "0x3beb80170272F07Aca12987af86a59888255a807",
-    "0x51316966907EF568689775066E97C46A4fFDE1A4",
-    "0xa13A41A2349d09c1e3A0Dd4D9448aF4Ad799Fc4a",
-    "0xC6F4465A6a521124C8e3096B62575c157999D361"
+    "0x0f2e7C0E904a525A24FF6f658053f6bA5Ce7A209",
+    "0x350bb91C9C8Ef4e8C0e19fbdc6A90A24bcb1eC2A",
+    "0x3BEB80170272f07aCA12987AF86A59888255A807",
+    "0x51316966907ef568689775066e97c46a4Ffde1a4",
+    "0xA13a41a2349D09C1E3a0dD4d9448Af4aD799fC4A",
+    "0xc6f4465a6A521124c8E3096b62575C157999d361"
 ]

script/action/eth-forks.ts

@@ -40,8 +40,8 @@ async function formatInfos() {
     })
 }
 
-function checkAddressChecksum(assetsFolderPath: string, address: string) {
-    const checksumAddress = toChecksum(address);
+function checkAddressChecksum(assetsFolderPath: string, address: string, chain: string) {
+    const checksumAddress = toChecksum(address, chain);
     if (checksumAddress !== address) {
         gitMove(assetsFolderPath, address, checksumAddress);
         console.log(`Renamed to checksum format ${checksumAddress}`);
@@ -60,7 +60,7 @@ async function checkAddressChecksums() {
                     gitMove(getChainAssetPath(chain, address), file, logoFullName);
                 }
             });
-            checkAddressChecksum(assetsPath, address);
+            checkAddressChecksum(assetsPath, address, chain);
         });
     });
 }
@@ -84,7 +84,7 @@ export class EthForks implements ActionInterface {
                             if (!isPathExistsSync(assetPath)) {
                                 error += `Expect directory at path: ${assetPath}\n`;
                             }
-                            const inChecksum = toChecksum(address);
+                            const inChecksum = toChecksum(address, chain);
                             if (address !== inChecksum) {
                                 error += `Expect asset at path ${assetPath} in checksum: '${inChecksum}'\n`;
                             }

script/common/eth-web3.ts

@@ -1,6 +1,31 @@
+import { reverseCase } from "./types";
+
 const Web3 = require('web3');
 
 const web3 = new Web3('ws://localhost:8546');
 
-export const isChecksum = (address: string): boolean => web3.utils.checkAddressChecksum(address);
-export const toChecksum = (address: string): string => web3.utils.toChecksumAddress(address);
+export const isChecksumEthereum = (address: string): boolean => web3.utils.checkAddressChecksum(address);
+export const toChecksumEthereum = (address: string): string => web3.utils.toChecksumAddress(address);
+
+export function toChecksum(address: string, chain: string = "ethereum"): string {
+    var checksumEthereum = toChecksumEthereum(address);
+    
+    // special handling for Wanchain
+    if (chain.toLowerCase() === "wanchain") {
+        const checksumWanchain = reverseCase(checksumEthereum).replace("X", "x");
+        return checksumWanchain;
+    }
+    
+    return checksumEthereum;
+}
+
+export function isChecksum(address: string, chain: string = "ethereum"): boolean {
+    // special handling for Wanchain
+    if (chain.toLowerCase() === "wanchain") {
+        const addressEthereum = reverseCase(address).replace("X", "x");
+        return isChecksumEthereum(addressEthereum);
+    }
+
+    return isChecksumEthereum(address);
+}
+

script/common/types.ts

@@ -76,3 +76,19 @@ export function arrayEqual(a1: any[], a2: any[]): boolean {
     }
     return true;
 }
+
+export function reverseCase(s: string): string {
+    const n = s.length;
+    var out: string = "";
+    for (var i = 0; i < n; ++i) {
+        const c = s[i];
+        if (isLowerCase(c)) {
+            out += c.toUpperCase();
+        } else if (isUpperCase(s[i])) {
+            out += c.toLowerCase();
+        } else {
+            out += c;
+        }
+    }
+    return out;
+}

test/index.test.ts

@@ -18,19 +18,24 @@ import {
     makeUnique,
     arrayDiff,
     arrayDiffNocase,
-    arrayEqual
+    arrayEqual,
+    reverseCase
 } from "../script/common/types";
 import { findImagesToFetch } from "../script/action/binance";
 
 describe("Test eth-web3 helpers", () => {
     test(`Test isChecksum`, () => {
-        expect(isChecksum("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee"), `checksum`).toBe(true);
-        expect(isChecksum("0x7bb09bc8ade747178e95b1d035ecbeebbb18cfee"), `lowercase`).toBe(false);
-        expect(isChecksum("0x7Bb09bC8aDE747178e95B1D035ecBe"), `too short`).toBe(false);
+        expect(isChecksum("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee", "ethereum"), `checksum`).toBe(true);
+        expect(isChecksum("0x7bb09bc8ade747178e95b1d035ecbeebbb18cfee", "ethereum"), `lowercase`).toBe(false);
+        expect(isChecksum("0x7Bb09bC8aDE747178e95B1D035ecBe", "ethereum"), `too short`).toBe(false);
+        expect(isChecksum("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee", "wanchain"), `wanchain wrong checksum`).toBe(false);
+        expect(isChecksum("0x7bb09bc8ade747178e95b1d035ecbeebbb18cfee", "wanchain"), `wanchain lowercase`).toBe(false);
+        expect(isChecksum("0x7bB09Bc8Ade747178E95b1d035ECbEebBb18CfEE", "wanchain"), `wanchain checksum`).toBe(true);
     });
     test(`Test toChecksum`, () => {
-        expect(toChecksum("0x7bb09bc8ade747178e95b1d035ecbeebbb18cfee"), `from lowercase`).toEqual("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee");
-        expect(toChecksum("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee"), `from checksum`).toEqual("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee");
+        expect(toChecksum("0x7bb09bc8ade747178e95b1d035ecbeebbb18cfee", "ethereum"), `from lowercase`).toEqual("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee");
+        expect(toChecksum("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee", "ethereum"), `from checksum`).toEqual("0x7Bb09bC8aDE747178e95B1D035ecBeEBbB18cFee");
+        expect(toChecksum("0x7bb09bc8ade747178e95b1d035ecbeebbb18cfee", "wanchain"), `wanchain, from lowercase`).toEqual("0x7bB09Bc8Ade747178E95b1d035ECbEebBb18CfEE");
     });
 });
 
@@ -106,6 +111,10 @@ describe("Test type helpers", () => {
         expect(arrayEqual(["a", "b", "c"], ["a", "b", "b"]), `length mismatch`).toBe(false);
         expect(arrayEqual(["a", "b", "b"], ["a", "b", "c"]), `length mismatch`).toBe(false);
     });
+    test(`Test reverseCase`, () => {
+        expect(reverseCase("abCDef12+-"), `mixed`).toEqual("ABcdEF12+-");
+        expect(reverseCase("ABcdEF12+-"), `mixed`).toEqual("abCDef12+-");
+    });
 });
 
 describe("Test action binance", () => {