Widsom-Assignment/storage-frame-1.18.html at main · veeresh0803/Widsom-Assignment · GitHub

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<!DOCTYPE html>
<!-- saved from url=(0114)https://z15ba20153.webengage.co/storage-frame-1.18.htm?cdn=y&cbf=webengage-engagement-callback-frame&lc=~15ba20153 -->
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=windows-1252"><meta http-equiv="x-ua-compatible" content="IE=Edge"><script>// Storage frame simply stores whatever data is given to it as localStorage[name] = value
// or returns the data again as event.data.name, event.data.value pairs

(function (window, document) {
    // gzip flag
    var isGzip = false;

    // ** helper routines
    function getParamValue (paramName) {
        var paramValue = '';
        var regex = new RegExp('[\\?&]' + paramName + '=([^&#]*)');
        var qs = regex.exec(location.href);
        if (qs !== null) {
            paramValue = qs[1];
        }

        return paramValue;
    }

    function bind (element, event, listener) {
        if (element.addEventListener) {
            element.addEventListener(event, listener);
        } else if (element.attachEvent) {
            element.attachEvent('on' + event, listener);
        }
    }

    function escapeForRegExp (text) {
        return (text + '').replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
    }

    function stringify (object) {
        if (typeof(JSON) !== 'undefined' && typeof(JSON.stringify) === 'function') {
            return JSON.stringify(object);
        } else {
            var type = typeof(object);

            if (type !== 'undefined' && type !== 'function') {
                if (type != 'object' || object === null) {
                    // simple data type
                    if (type == 'string') {
                        object = object.replace(/[\\]/g, '\\\\')
                            .replace(/[\"]/g, '\\\"')
                            .replace(/[\/]/g, '\\/')
                            .replace(/[\b]/g, '\\b')
                            .replace(/[\f]/g, '\\f')
                            .replace(/[\n]/g, '\\n')
                            .replace(/[\r]/g, '\\r')
                            .replace(/[\t]/g, '\\t');

                        object = '"' + object + '"';
                    }

                    return String(object);
                } else {
                    var json, n, val;

                    if (typeof(object.toJSON) === 'function') {
                        return stringify(object.toJSON());
                    } else if (object.constructor == Array) {
                        json = [];

                        for (n = 0; n < object.length; n++) {
                            val = stringify(object[n]);
                            json.push(typeof(val) === 'undefined' ? 'null' : val);
                        }

                        return '[' + String(json) + ']';

                    } else {
                        json = [];

                        for (n in object) {
                            if (object.hasOwnProperty(n)) {
                                val = stringify(object[n]);
                                if (typeof(val) !== 'undefined') {
                                    json.push(stringify(n) + ':' + val);
                                }
                            }
                        }

                        return '{' + String(json) + '}';
                    }
                }
            }
        }
    }

    function detectLocalStorageSupport () {
        try {
            var _localStorageFlag = (typeof(Storage) !== 'undefined' && 'localStorage' in window && window.localStorage !== null);
            if (_localStorageFlag) {
                // for iOS tablet, even though it supports localStorage it throws QuotaExceedError
                window.localStorage['_we_dm_ios_sup_f_'] = 'true';
                window.localStorage.removeItem('_we_dm_ios_sup_f_');
            }

            return _localStorageFlag;
        } catch (e) {
            return false;
        }
    }


    var CALLBACK_FRAME_NAME = getParamValue('cbf') || 'wkCBStorageFrame';

    function postMessage (msg, name, value) {
        if (window.parent.frames[CALLBACK_FRAME_NAME]) {
            window.parent.frames[CALLBACK_FRAME_NAME].postMessage(stringify({
                name  : name,
                msg   : msg,
                value : value
            }), '*');
        }
    }


    function init (vconfig) {

        function isValidOrigin (origin) {
            // checking domain validity

            origin = origin.replace(/https?:\/\//, ''); // getting rid off the scheme
            var flag = false;
            var originHost = origin.split(":")[0];
            var originPort = origin.split(":")[1];
            var domains = [];
            var regexps = [];
            if (vconfig.sites === undefined || !vconfig.sites) {
                vconfig.sites = {};
                vconfig.sites[vconfig.domain] = 'DOMAIN';
            }
            for (var key in vconfig.sites) {
                var _publisherDomain = key,
                    _publisherDomainPort;
                if (vconfig.sites[key] == 'DOMAIN') {
                    domains[domains.length] = _publisherDomain;
                    if (_publisherDomain.match(/^www\./i)) {
                        _publisherDomain = _publisherDomain.substring(4, _publisherDomain.length);
                    }
                    if (_publisherDomain.match(/\:[\d]*$/)) {
                        _publisherDomainPort = _publisherDomain.substring(_publisherDomain.indexOf(':') + 1, _publisherDomain.length);
                        _publisherDomain = _publisherDomain.substring(0, _publisherDomain.indexOf(':'));
                    }
                    if ((originHost.match(new RegExp(escapeForRegExp(_publisherDomain) + '$', 'gi')) && (!_publisherDomainPort || _publisherDomainPort == originPort))) {
                        flag = true;
                        break;
                    }
                } else if (vconfig.sites[key] == 'REGEXP') {
                    var matcherExp = _publisherDomain;
                    regexps[regexps.length] = _publisherDomain;
                    if ((origin.match(matcherExp))) {
                        flag = true;
                        break;
                    }
                }
            }

            return flag;
        }


        var readKeys = {};

        bind(window, 'message', function (event) {
            event = event || this.event;

            if (isValidOrigin(event.origin)) {
                var name = event.data.name;
                var value = event.data.value;
                var action = event.data.action;

                switch (action) {
                    case 'store':
                        localStorage.setItem(name, value);
                        // postMessage('update', name, localStorage[name]);
                        break;

                    case 'read':
                        readKeys[name] = true;

                        postMessage('new-data', name, localStorage[name]);
                        break;

                    case 'delete':
                        localStorage.removeItem(name);
                        break;
                }
            } else {
                // TODO - send invalid request
            }
        });

        // listen changes in localStorage values
        bind(window, 'storage', function(event) {
            if (readKeys.hasOwnProperty(event.key)) {
                postMessage('update', event.key, event.newValue);
            }
        });


        if (vconfig) {
            postMessage('init', 'init', {
                status: 'success',
                webengage_fs_configurationMap: vconfig,
                isGzip: isGzip
            });
        } else {
            postMessage('init', 'init', {
                status: 'failed'
            });
        }
    }

    var windowUnloading = false;

    bind(window, 'beforeunload', function () {
        windowUnloading = true;
    });

    bind(window, 'load', function () {

        if (!detectLocalStorageSupport()) {
            return init();
        }

        var vscript = document.createElement('script');
        vscript.type = 'text/javascript';
        vscript.charset = 'UTF-8';

        var lc = getParamValue('lc');
        let script = null
        if (getParamValue('cdn') === 'y') {
            script =`${location.protocol == 'http:' ? 'http:' : 'https:'}`+'//wsdk-files.webengage.com/webengage/' + lc + '/v4.js';
        } else {
            script = `${location.protocol == 'http:' ? 'http:' : 'https:'}`+'//s3.amazonaws.com/'
                + (isGzip ? 'webengage-zfiles' : 'webengage-files')
                + '/webengage/' + lc + '/v4.js?r=' + Math.floor((new Date()).getTime() / 60000);
        }
        if (getParamValue("proxyUrl")!==''){
            vscript.src = `${getParamValue("proxyUrl")}?url=${encodeURIComponent(script)}`
        }else{
            vscript.src = script
        }


        vscript.onload = function(event) {
            vscript.onreadystatechange = vscript.onload = null;

            init(webengage_fs_configurationMap);
        };

        vscript.onerror = function (event) {
            if (!windowUnloading) {
                var im = new Image();

                im.src = '//c.webengage.com/e.jpg?type=error'
                    + '&event=' + encodeURIComponent('[sf] v4 loading failed')
                    + '&category=' + lc
                    + '&data=' + encodeURIComponent('{"version" : "4.0", "text" : "Failed to load config ' + vscript.src + '" }')
                    + '&ts=' + (new Date()).getTime();
            }

            init();
        };

        vscript.onreadystatechange = function () {
            if (vscript.readyState === 'loaded') {
                vscript.onload && vscript.onload();
            } else if (vscript.readyState === 'complete') {
                setTimeout(function () {
                    vscript.onload && vscript.onload();
                }, 2000);
            }
        };

        document.body.appendChild(vscript);
    });

})(window, document);</script></head><body marginwidth="0" marginheight="0"><script type="text/javascript" charset="UTF-8" src="./v4.js.download"></script></body></html>