/**
* PayU Latam - Copyright (c) 2013 - 2024
* http://www.payu.com.co
*/
var deviceSessionId = '281534544330008754873900996476238539808580200';
var fingerprintProviderUrl = 'https://openfpcdn.io/fingerprintjs/v3';
var fingerprintProviderName = 'FINGERPRINT_V3_OPEN';
var fingerprintServiceUrl = 'https://api.payulatam.com/fingerprint-service/api/v2/fingerprint';
/**
* Function containing common functionalities for fingerprint's service.
* @author Daniel f. Alfonso
*/
function FingerprintUtils() {
}
/**
* Allows to register messages in the console of the browser.
* @param msg message to register.
*/
FingerprintUtils.prototype.log = function(msg) {
try {
if (!this.console) {
this.console = (console ? console : window.console);
}
this.console.log(msg);
} catch (e) {
document.write('' + msg + '
');
}
}
/**
* Validate whether an object is empty or not
* @return true if the object is empty or otherwise false.
*/
FingerprintUtils.prototype.isEmpty = function(obj) {
return !obj;
}
/**
* Calculates the elapsed time from a given date to the current date.
* @param startDateTime start DateTime.
*/
FingerprintUtils.prototype.totalTimeElapsed = function(startDateTime) {
return performance.now() - startDateTime;
}
/**
* Converts a json object to a string object.
* @param jsonObj a json object.
* @return a string object.
*/
FingerprintUtils.prototype.jsonAsString = function(jsonObj) {
let result = JSON.stringify(jsonObj, function replacer(key, value) {
let stringData = JSON.stringify(value);
stringData = stringData.substring(1).slice(0, -1);
return '{' + stringData + '}';
});
if(result && result.includes("\\\\\\")) {
result = JSON.stringify(jsonObj);
}
return result;
}
/**
* Get component by name.
* @param components device components.
* @param componentName component name.
* @return Component found or otherwise null.
*/
FingerprintUtils.prototype.getComponentByName = function(components, componentName) {
let result = null;
for ( let i in components) {
if (i === componentName) {
result = components[i];
break;
}
}
return result;
}
/**
* Allows to request data from a web server.
* @param url Server URL.
* @param method HTTP method.
* @param async Indicates whether the request is made asynchronous or not.
* @param contentType content type.
* @param jsonData data to send.
* @param statusOK HTTP status that indicates a correct response.
*/
FingerprintUtils.prototype.sendRequest = function(url, method, async, contentType, jsonData, statusOK) {
try {
let xmlHttp = new XMLHttpRequest();
xmlHttp.open(method, url, async);
xmlHttp.setRequestHeader("Access-Control-Allow-Origin", url);
xmlHttp.setRequestHeader("Accept", contentType);
xmlHttp.setRequestHeader("Content-Type", contentType);
xmlHttp.onload = function() {
if (xmlHttp.status !== statusOK) {
fingerprintUtils.log(`Request failed!, returned status of ${xmlHttp.status}`);
}
};
if (!this.isEmpty(jsonData)) {
jsonData.deviceData.properties = fingerprintUtils.jsonAsString(jsonData.deviceData.properties);
xmlHttp.send(JSON.stringify(jsonData));
} else {
xmlHttp.send();
}
} catch (e) {
fingerprintUtils.log('Error sending request for save fingerprint data: ' + e);
}
}
/**
* Function containing functionalities for fingerprint's service.
* @author Daniel f. Alfonso
*/
function DeviceFingerprintFunc() {
}
/**
* Send device evaluation.
* @author Daniel f. Alfonso
* @param urlService string with the url of the fingerprint service.
*/
DeviceFingerprintFunc.prototype.sendEvaluation = function(urlService) {
if ( !deviceFingerprint.evalSubmitted && deviceFingerprint.evalCompleted ) {
deviceFingerprint.evalSubmitted = true;
fingerprintUtils.sendRequest(urlService, "POST", true, 'application/json',
deviceFingerprint, 202);
}
}
/**
* Execute service for fingerprint v3
* @author Daniel f. Alfonso
* @param urlProvider string with the url of the fingerprint provider
* @param urlService string with the url of fingerprint service
*/
DeviceFingerprintFunc.prototype.exeFingerprint = function(urlProvider, urlService) {
const startTime = performance.now();
// Initialize the agent at application startup.
const fpPromise = import(urlProvider)
.then(FingerprintJS => FingerprintJS.load());
// Get the visitor identifier when you need it.
fpPromise
.then(fp => fp.get({ extendedResult: true }))
.then(result => {
// This is the visitor identifier
deviceFingerprint.deviceData.deviceId = result.visitorId;
deviceFingerprint.deviceData.ipAddress = fingerprintUtils.getComponentByName(result, "ip");
deviceFingerprint.deviceData.properties = result;
deviceFingerprint.requestId = result.requestId;
deviceFingerprint.executionTime = Math.ceil(fingerprintUtils.totalTimeElapsed(startTime));
deviceFingerprint.evalCompleted = true;
this.sendEvaluation(urlService);
})
.catch(error => {
fingerprintUtils.log("Error obtain fingerprints: " + error.message);
});
}
/**
* Init the evaluation of the fingerprint device
* @author Daniel f. Alfonso
* @param id evaluation identifier
* @param urlProvider string with the url of the fingerprint provider
* @param mainProvider string with the name of the fingerprint provider
* @param urlService string with the url of the fingerprint service
*/
DeviceFingerprintFunc.prototype.evaluateFingerprint = function(id, urlProvider, mainProvider, urlService) {
try {
if (!fingerprintUtils.isEmpty(id) && !fingerprintUtils.isEmpty(urlProvider)
&& !fingerprintUtils.isEmpty(urlService) && !fingerprintUtils.isEmpty(mainProvider)) {
deviceFingerprint.deviceSessionId = id;
deviceFingerprint.mainProvider = mainProvider;
deviceFingerprint.evalCompleted = false;
deviceFingerprint.evalSubmitted = false;
this.exeFingerprint(urlProvider, urlService);
} else {
fingerprintUtils.log("Configuration error in fingerprint service: id, fingerprintServiceUrl, fingerprintProviderName and fingerprintProviderUrl are required.");
}
} catch (e) {
fingerprintUtils.log("Exception getting the fingerprint javascript parameters");
}
}
/**
* Starts evaluating and saving device information.
* @author Daniel f. Alfonso
*/
DeviceFingerprintFunc.prototype.run = function() {
// Gets the values that are sent in the service call
let id = (deviceSessionId ? deviceSessionId : null);
let urlProvider = (fingerprintProviderUrl ? fingerprintProviderUrl : null);
let mainProvider = (fingerprintProviderName ? fingerprintProviderName : null);
let urlService = (fingerprintServiceUrl ? fingerprintServiceUrl : null);
this.evaluateFingerprint(id, urlProvider, mainProvider, urlService);
}
/**
* Class containing data of the user's device to be sent to fingerprint service.
* @author Daniel f. Alfonso
*/
class DeviceData {
/** Device id. */
deviceId;
/** ipAddress of the device. */
ipAddress;
/** List with device properties (components). */
properties;
}
/**
* Class responsible for capture and send data that identifies the user's device.
* @author Daniel f. Alfonso
*/
class DeviceFingerprint {
/** the session associated to the device.*/
deviceSessionId;
/** Device data. */
deviceData = new DeviceData();
/** Device fingerprint provider.*/
mainProvider;
/** Request identifier of fingerprint provider.*/
requestId;
/** Total time of evaluation execution.*/
executionTime;
/** Indicate if the evaluation is finished.*/
evalCompleted = false;
/** Indicates whether the evaluation has already been submitted.*/
evalSubmitted = false;
}
let fingerprintUtils = new FingerprintUtils();
let deviceFingerprintUtils = new DeviceFingerprintFunc();
let deviceFingerprint = new DeviceFingerprint();
deviceFingerprintUtils.run();