WebView: Dapp & Connect Wallet

[phr85]

Dear Community

I'm using the Example WKWebView with injected "web3swift".
Our Android Developer using TrustWallet (AlphaWallet) Dapp Component and he can connect his wallet to our custom Dapp widget.

I'm trying the same on iOS, but without luck:
He told me we have to use "signPersonalMessage (web3.eth.personal.sign)" instead of "signMessage (web3.eth.sign)".

Does anyone know how to extend WebView bridge with this function?

Bests & thank you in advance

Philippe

[AntonGrigorevSecurrency]

Hi @phr85 . Maybe web3.browserFunctions.personalSign can be useful for you?

[phr85]

Hello @AntonGrigorevSecurrency, thank you very much for you answer.

I'm not really sure how I could bind this and what kind of params I will receive inside function:

I play around a lot and I guess it should be something like this:

self.webView.bridge.register({ (parameters, completion) in
            print("personal_sign")
            if parameters == nil {
                completion(.failure(Bridge.JSError(code: 0, description: "No parameters provided")))
                return
            }
            let allAccounts = web3.browserFunctions.getAccounts()
            let payload = parameters!["payload"] as? [String:Any]
            let personalMessage = payload!["data"] as? String
            
            let result = web3.browserFunctions.personalSign(personalMessage!, account: allAccounts?.first ?? "", password: self.walletPassword )
            if result == nil {
                completion(.failure(Bridge.JSError(code: 0, description: "Account or data is invalid")))
                return
            }
            completion(.success(["signedMessage": result as Any]))
        }, for: "eth_browserFunctions_personalSign")

[phr85]

I found out that our Dapp is calling getAccounts, which web3swift in webview returns. Our Dapp try to access "accounts[0]" and stops. I wonder why. I also tried in Safari Inspector to access first account of getAccounts() but I didn't get result.

[phr85]

The issue was in our Dapp and not in the library.