115 lines
4.5 KiB
JavaScript
115 lines
4.5 KiB
JavaScript
(function() {
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function SpamBeeCaptcha(loadData) {
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var that = this;
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var inputCaptcha = document.getElementById("bee_captcha");
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var divCaptcha = document.getElementById('serendipity_comment_beecaptcha');
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var method = loadData.method == 'json' ? loadData.method : 'default';
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var url = typeof loadData.url != 'undefined' ? loadData.url : null;
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var answer = typeof loadData.answer != 'undefined' ? loadData.answer : null;
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var scrambleKey = typeof loadData.scrambleKey != 'undefined' ? loadData.scrambleKey : null;
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this.attachToLoadEvent = function() {
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var handlerCalled = false;
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var eventHandler = function() {
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// Since we use multiple handlers, only run this function once
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if (handlerCalled) return;
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handlerCalled = true;
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that.initCaptcha();
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// We don't need any additional load events anymore
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if (document.addEventListener) {
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document.removeEventListener('load', eventHandler, true);
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}
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}
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if (document.addEventListener) {
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// Use DOMContentLoaded for modern browsers, load for older ones
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document.addEventListener('DOMContentLoaded', eventHandler, true);
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document.addEventListener('load', eventHandler, true);
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} else if (window.attachEvent) {
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// Internet Exploder
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window.attachEvent('onload', eventHandler);
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} else {
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// Very, very old browsers
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var oldOnload = typeof window.onload == 'function' ? window.onload : null;
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window.onload = function() {
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if (null !== oldOnload) oldOnload();
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eventHandler();
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}
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}
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}
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this.initCaptcha = function() {
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if (null === inputCaptcha) {
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return;
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}
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if ('default' == method && null !== answer) {
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fillCaptcha(answer, scrambleKey)
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} else if ('json' == method && null !== url) {
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fetchJsonData();
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}
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}
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this.hideBeeElement = function() {
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var elementClass = divCaptcha.className;
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if (null === elementClass.match(/\bspambeehidden\b/)) {
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divCaptcha.className = elementClass + ' spambeehidden';
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}
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}
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function fillCaptcha(answer, scrambleKey) {
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if (typeof scrambleKey != 'undefined' && null !== scrambleKey) {
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answer = xorDescramble(decodeUtf8(unescape(answer)), scrambleKey);
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}
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inputCaptcha.value = answer;
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that.hideBeeElement();
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}
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function fetchJsonData() {
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if (window.XMLHttpRequest) { // Mozilla, Safari, Opera, IE7
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var httpRequest = new XMLHttpRequest();
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} else if (window.ActiveXObject) { // IE6, IE5
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var httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
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}
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httpRequest.onreadystatechange = function() {
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fetchJsonDataReady(httpRequest);
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}
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httpRequest.open('POST', url, true);
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httpRequest.setRequestHeader('content-Type', 'application/x-www-form-urlencoded; charset=utf-8');
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httpRequest.send();
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}
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function fetchJsonDataReady(httpRequest) {
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if (null !== httpRequest && 4 == httpRequest.readyState && 200 == httpRequest.status) {
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var response = httpRequest.responseText;
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var jsonResponse = typeof JSON != 'undefined' ? JSON.parse(response) : eval('(' + response + ')');
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var answer = jsonResponse.answer;
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var scrambleKey = typeof jsonResponse.scrambleKey != 'undefined' ? jsonResponse.scrambleKey : null;
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if (typeof answer != 'string' || 'ERROR' != answer.toUpperCase()) {
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fillCaptcha(answer, scrambleKey);
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}
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}
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}
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function decodeUtf8(string) {
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return decodeURIComponent(escape(string));
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}
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function xorDescramble(string, key) {
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var decoded = '';
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for (i = 0; i < string.length; ++i) {
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decoded += String.fromCharCode(string.charCodeAt(i) ^ key);
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}
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return decoded;
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}
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}
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var spamBeeObj = new SpamBeeCaptcha(spamBeeData);
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spamBeeObj.attachToLoadEvent();
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})(); |