Kundenverwaltung/js/auth.js

async function checkRegistration(username) {
    try {

        if (!window.fetch || !navigator.credentials || !navigator.credentials.create) {
            throw new Error('Browser not supported.');
        }

        // get check args
        let rep = await window.fetch('authServer.php?fn=getGetArgs&user='+username + getGetParams(), {method:'GET',cache:'no-cache'});
        const getArgs = await rep.json();

        // error handling
        if (getArgs.success === false) {
            throw new Error("This was not successful");//getArgs.msg);
        }

        // replace binary base64 data with ArrayBuffer. a other way to do this
        // is the reviver function of JSON.parse()
        recursiveBase64StrToArrayBuffer(getArgs);

        // check credentials with hardware
        const cred = await navigator.credentials.get(getArgs);

        // create object for transmission to server
        const authenticatorAttestationResponse = {
            id: cred.rawId ? arrayBufferToBase64(cred.rawId) : null,
            clientDataJSON: cred.response.clientDataJSON  ? arrayBufferToBase64(cred.response.clientDataJSON) : null,
            authenticatorData: cred.response.authenticatorData ? arrayBufferToBase64(cred.response.authenticatorData) : null,
            signature: cred.response.signature ? arrayBufferToBase64(cred.response.signature) : null,
            userHandle: cred.response.userHandle ? arrayBufferToBase64(cred.response.userHandle) : null
        };

        // send to server
        rep = await window.fetch('authServer.php?fn=processGet' + getGetParams(), {
            method:'POST',
            body: JSON.stringify(authenticatorAttestationResponse),
            cache:'no-cache'
        });
        const authenticatorAttestationServerResponse = await rep.json();

        // check server response
        if (authenticatorAttestationServerResponse.success) {
            window.location.reload();
           /// window.alert(authenticatorAttestationServerResponse.msg || 'login success');

        } else {
            throw new Error("This was not successful");//authenticatorAttestationServerResponse.msg);
        }

    } catch (err) {
        //reloadServerPreview();
        window.alert("An error occured");//err.message || 'unknown error occured');
    }
}

function queryFidoMetaDataService() {
        window.fetch('authServer.php?fn=queryFidoMetaDataService' + getGetParams(), {method:'GET',cache:'no-cache'}).then(function(response) {
            return response.json();

        }).then(function(json) {
           if (json.success) {
               window.alert(json.msg);
           } else {
               throw new Error(json.msg);
           }
        }).catch(function(err) {
            window.alert(err.message || 'unknown error occured');
        });
    }

    /**
     * convert RFC 1342-like base64 strings to array buffer
     * @param {mixed} obj
     * @returns {undefined}
     */
    function recursiveBase64StrToArrayBuffer(obj) {
        let prefix = '=?BINARY?B?';
        let suffix = '?=';
        if (typeof obj === 'object') {
            for (let key in obj) {
                if (typeof obj[key] === 'string') {
                    let str = obj[key];
                    if (str.substring(0, prefix.length) === prefix && str.substring(str.length - suffix.length) === suffix) {
                        str = str.substring(prefix.length, str.length - suffix.length);

                        let binary_string = window.atob(str);
                        let len = binary_string.length;
                        let bytes = new Uint8Array(len);
                        for (let i = 0; i < len; i++)        {
                            bytes[i] = binary_string.charCodeAt(i);
                        }
                        obj[key] = bytes.buffer;
                    }
                } else {
                    recursiveBase64StrToArrayBuffer(obj[key]);
                }
            }
        }
    }

    /**
     * Convert a ArrayBuffer to Base64
     * @param {ArrayBuffer} buffer
     * @returns {String}
     */
    function arrayBufferToBase64(buffer) {
        let binary = '';
        let bytes = new Uint8Array(buffer);
        let len = bytes.byteLength;
        for (let i = 0; i < len; i++) {
            binary += String.fromCharCode( bytes[ i ] );
        }
        return window.btoa(binary);
    }

    /**
     * Get URL parameter
     * @returns {String}
     */
    function getGetParams() {
        let url = '';

        url += '&apple=1';
        url += '&yubico=1';
        url += '&solo=1';
        url += '&hypersecu=1';
        url += '&google=1';
        url += '&microsoft=1';
        url += '&mds=1';

        url += '&requireResidentKey=0';

        url += '&type_usb=1';
        url += '&type_nfc=1';
        url += '&type_ble=1';
        url += '&type_int=1';
        url += '&type_hybrid=1';

        url += '&fmt_android-key=1';
        url += '&fmt_android-safetynet=1';
        url += '&fmt_apple=1';
        url += '&fmt_fido-u2f=1';
        url += '&fmt_none=0' ;
        url += '&fmt_packed=1';
        url += '&fmt_tpm=1';
        url += '&userVerification=discouraged';

        return url;
    }