GetLogin

Description

GetLogin is a Đapp for providing a decentralized single sign-on solution for Ethereum-base social applications with a familiar (Web2.0-style) onboarding experience that does not require Ether or even any experience with Ethereum.

Initially, the user's account is protected by a user name and a password, but as the value of the account grows and the user becomes more familiar with Ethereum, it is possible to use a better protected Ethereum address (e.g. that of a hardware wallet) as the source of login credentials.

GetLogin comes with an invitation system. The gas costs of new users are covered by those who invited them and the latter are also their first point of contact for social account recovery in case of lost or compromised credentials.

GetLogin implements an OpenID Connect authentication through OAuth 2 (implicit flow - client-side only).

Last project build hosted at getlogin.org.

Register your app in GetLogin smart contract

1. Receive an invite (you can write to my email: igor.shadurin@gmail.com) and register account.
2. Use page to manage your application data: https://getlogin.org/

Inject GetLogin to your dApp

Add this code to the app. If user authorize your app, you could use GLInstance to call GetLogin methods.

<script>
    let GLInstance = null;
    const APP_ID = 2;
    const setAccessToken = token => {
        localStorage.setItem('access_token', token);
    };

    const getAccessToken = () => {
        return localStorage.getItem('access_token');
    };
    
    const script = document.createElement('script');
    script.src = `https://getlogin.org/api/last.js`;
    script.async = true;
    script.type = 'module';
    script.onload = async () => {
        const instance = new window._getLoginApi();
        GLInstance = instance;
        const result = await GLInstance.init(APP_ID, 'https://getlogin.org/', window.location.origin, getAccessToken());
        console.log('result', result);
        if (result.data.is_client_allowed) {
            console.log('User allowed this app, you could call some methods');
        } else {
            console.log('App currently not allowed by user');
        }
    };

    document.body.appendChild(script);
</script>

where APP_ID is your app which created here https://getlogin.org/developers

Call built-in methods

const data = GLInstance.getUserInfo();
alert(JSON.stringify(data));

getUserInfo() - get current user information

getSessionBalances() - get session wallet balances (xDai, xBzz)

getSessionPrivateKey() - get session wallet private key

isReady() - check is iframe ready

setClientAbi(abi) - set your dApp ABI

getClientAbi() - get current ABI

getAuthorizeUrl() - get URL for authorize user in you dApp

resetInit() - reset iframe

init(appId, baseApiUrl, redirectUrl, accessToken = null) - init GetLogin. This promise return object {authorize_url: string, is_client_allowed: boolean, client_id: int, type: "get_login_init"}. is_client_allowed - is user authorized your dApp, if false - show authorize_url for authorization.

logout() - logout user from your dApp

callContractMethod(address, method, ...params) - call dApp contract method (read-only)

sendTransaction(address, method, txParams, params) - send transaction to your dApp contract

setOnLogout(func) - set callback when user logged out

keccak256(data) - get keccak256 hash from passed data

getPastEvents(address, eventName, params) - get events from contract

getAccessTokenBalance() - receive balance on access token

Call dApp contract methods

Set contract ABI once before calling dApp methods: window.getLoginApi.setClientAbi(abi);

Call getNotes method which defined in your dApp contract:

const data = await GLInstance.callContractMethod(address, 'getNotes', usernameHash)
console.log(data);

address is your dApp address

Send transaction to your dApp contract:

const data = await GLInstance.sendTransaction(address, 'createNote', [noteText], {resolveMethod: 'mined'})
console.log(data);

address is your dapp address.

createNote is your dapp method defined in contract.

noteText content of your note.

One important param is resolveMethod. Values of this param can be:

mined - fired when tx sent and mined (slow)

transactionHash - when tx sent (fast)

Deploying smart contracts

cd src/smart

Create .env file with private key.

truffle deploy --reset --network poa

or

truffle deploy --reset --network xdai

or for development

truffle deploy --reset --network development

Do the same with src/smart-bzz folder. This folder contains implementation of BZZ token.

Building project

Use Node: 16

In the project directory, you can run:

yarn - install dependencies

yarn build - builds the project, or use NODE_OPTIONS=--max_old_space_size=4096 yarn build for machines with limited RAM.

yarn start - start project locally

App examples

Reward system created with React - https://github.com/GetLoginEth/reward-system.

Donate ETH address

You can donate to developers of the project to Ethereum address: 0xde442ceD045ae30e076597C428876782b42D24cC