ENS Functionality

[barrasso]

Hey all, I am trying to build support for ENS into one of my mobile apps, (the ENS wallet from ETHBerlin), and I am having some trouble understanding how to get this done effectively.

I am attempting to interact with the Ropsten ENS contracts. Do I need to use the json ABI for the registrar in order to use it? Maybe it would be helpful to create a series of ENS handler classes like those found here: https://github.com/argentlabs/web3.swift/tree/master/web3swift/src/ENS

In the meantime, it would be super helpful if anyone could provide a guide or some examples on how to do this with the existing library functions. Thanks.

[shamatar]

Do you need to resolve ENS names or auction for them, for example?

…

________________________________ From: Mark Barrasso <notifications@github.com> Sent: Tuesday, October 2, 2018 9:31:21 PM To: matterinc/web3swift Cc: Subscribed Subject: [matterinc/web3swift] ENS Functionality (#56) Hey all, I am trying to build support for ENS into one of my mobile apps, (the ENS wallet from ETHBerlin), and I am having some trouble understanding how to get this done effectively. I am attempting to interact with the Ropsten ENS contracts. Do I need to use the json ABI for the registrar in order to use it? Maybe it would be helpful to create a series of ENS handler classes like those found here: https://github.com/argentlabs/web3.swift/tree/master/web3swift/src/ENS In the meantime, it would be super helpful if anyone could provide a guide or some examples on how to do this with the existing library functions. Thanks. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#56>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AGKv9zjP99xXDCRxtuo0Ux0ljHBDGG6bks5ug7D5gaJpZM4XEndk>.

[barrasso]

Both @shamatar

[shamatar]

I think guys have made a ENS resolver and even has written some tests. Regarding the auction - not sure if this functionality is planned, but the library can access arbitrary contracts, so you can make a routine. Sincerely, Alex

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________________________________ From: Mark Barrasso <notifications@github.com> Sent: Tuesday, October 2, 2018 9:50:51 PM To: matterinc/web3swift Cc: Alexander; Mention Subject: Re: [matterinc/web3swift] ENS Functionality (#56) Both @shamatar<https://github.com/shamatar> — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#56 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AGKv9_IfsWgw6AbtotdxWSKUMS6b9WLYks5ug7WLgaJpZM4XEndk>.

[barrasso]

Ok awesome. I'd love to see that ENS resolver code. Also, I'd appreciate some examples in accessing arbitrary contracts-- maybe specifically on placing a bid or viewing open ENS auctions.

[shamatar]

Initial functionality is now in 1.1.10, with something like

let ENS = ENS(web3: web)

There is a resolver there at least :)

[barrasso]

This is great @shamatar -- I will try to contribute to this existing functionality as I dive deeper into the auction functions.

[barrasso]

Having issues with getting a public key for domain on Mainnet:

        let web3 = Web3.InfuraMainnetWeb3()
        var ens = ENS(web3: web3)
        DispatchQueue.global().async {
            let result = ens.getPubkey(domain: "vitalik.eth")
            switch result {
            case .failure(let error):
                print(error.localizedDescription)
            case .success(let pubkey):
                print(pubkey)
            }
        }

Response:

Error: The operation couldn’t be completed. (web3swift.Web3Error error 7.)

Versus getting it on Ropsten:

        let web3 = Web3.InfuraRopstenWeb3()  // only thing that has changed
        var ens = ENS(web3: web3)
        DispatchQueue.global().async {
            let result = ens.getPubkey(domain: "vitalik.eth")
            switch result {
            case .failure(let error):
                print(error.localizedDescription)
            case .success(let pubkey):
                print(pubkey)
            }
        }

Response:

["y": <00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000>, "0": <00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000>, "x": <00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000>, "1": <00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000>]
PublicKey(x: "0x0000000000000000000000000000000000000000000000000000000000000000", y: "0x0000000000000000000000000000000000000000000000000000000000000000")

[barrasso]

Got Mainnet working just using the standard arbitrary contract calls:

        // MAINNET
        let web3 = Web3.InfuraMainnetWeb3()
        let contractAddress = EthereumAddress("0x314159265dd8dbb310642f98f50c066173c1259b")!

        DispatchQueue.global().async {
            let gasPriceResult = web3.eth.getGasPrice()
            guard case .success(let gasPrice) = gasPriceResult else {return}
            print(gasPrice)
            var options = Web3Options.defaultOptions()
            options.gasPrice = gasPrice
            options.from = ks?.addresses?.first!
            let parameters = [NameHash.nameHash("vitalik.eth")] as [AnyObject]

            web3.addKeystoreManager(keystoreManager)
            let contract = web3.contract(Web3.Utils.ensRegistryABI, at: contractAddress, abiVersion: 2)!
            let intermediate = contract.method("owner", parameters:parameters,  options: options)
            DispatchQueue.global().async {
                guard let res = intermediate?.call(options: options) else {return}
                switch res {
                case .success(let res):
                    print("successful: \(res)")
                case .failure(let error):
                    print(error)
                }
            }
        }

Response:

successful: ["0": web3swift.EthereumAddress(_address: "0xd8da6bf26964af9d7eed9e03e53415d37aa96045", type: web3swift.EthereumAddress.AddressType.normal)]