check address validity

PolkaGate · Dec 5, 2023 · 6058d51 · 6058d51
1 parent ef1de64
commit 6058d51
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Showing 2 changed files with 22 additions and 2 deletions.
diff --git a/packages/dapp/src/TransferFund.tsx b/packages/dapp/src/TransferFund.tsx
@@ -11,6 +11,7 @@ import { TxResult, send } from './apis/send';
 import { amountToMachine } from './util/utils';
 import { buildPayload } from './util/buildPayload';
 import subscan from './assets/subscan.svg';
+import isValidAddress from './util/isValidAddress';
 
 interface Props {
   api: ApiPromise | undefined;
@@ -31,11 +32,14 @@ function TransferFund({ api, account, balances, currentChainName, formatted, isP
 
   const handleToAddress = useCallback(
     (event: React.ChangeEvent<HTMLInputElement>) => {
-      event?.target?.value && setToAddress(event.target.value);
+      const mayBeAddress = event?.target?.value
+      if (isValidAddress(mayBeAddress)) {
+        setToAddress(event.target.value);
+      }
     }, [],);
 
   const handleAmount = useCallback((event: React.ChangeEvent<HTMLInputElement>) => {
-    if (isNaN((Number(event?.target?.value)))){
+    if (isNaN((Number(event?.target?.value)))) {
       return
     }
 

diff --git a/packages/dapp/src/util/isValidAddress.ts b/packages/dapp/src/util/isValidAddress.ts
@@ -0,0 +1,16 @@
+import { decodeAddress, encodeAddress } from '@polkadot/keyring';
+import { hexToU8a, isHex } from '@polkadot/util';
+
+export default function isValidAddress(_address: string | undefined): boolean {
+  try {
+    encodeAddress(
+      isHex(_address)
+        ? hexToU8a(_address)
+        : decodeAddress(_address)
+    );
+
+    return true;
+  } catch (error) {
+    return false;
+  }
+}