static/js/gt.js
/* initGeetest 1.0.0
* 用于加载id对应的验证码库，并支持宕机模式
* 暴露 initGeetest 进行验证码的初始化
* 一般不需要用户进行修改
*/
(function (global, factory) {
"use strict";
if (typeof module === "object" && typeof module.exports === "object") {
// CommonJS
module.exports = global.document ?
factory(global, true) :
function (w) {
if (!w.document) {
throw new Error("Geetest requires a window with a document");
}
return factory(w);
};
} else {
factory(global);
}
})(typeof window !== "undefined" ? window : this, function (window, noGlobal) {
"use strict";
if (typeof window === 'undefined') {
throw new Error('Geetest requires browser environment');
}
var document = window.document;
var Math = window.Math;
var head = document.getElementsByTagName("head")[0];
function _Object(obj) {
this._obj = obj;
}
_Object.prototype = {
_each: function (process) {
var _obj = this._obj;
for (var k in _obj) {
if (_obj.hasOwnProperty(k)) {
process(k, _obj[k]);
}
}
return this;
}
};
function Config(config) {
var self = this;
new _Object(config)._each(function (key, value) {
self[key] = value;
});
}
Config.prototype = {
api_server: 'api.geetest.com',
protocol: 'http://',
type_path: '/gettype.php',
fallback_config: {
slide: {
static_servers: ["static.geetest.com", "dn-staticdown.qbox.me"],
type: 'slide',
slide: '/static/js/geetest.0.0.0.js'
},
fullpage: {
static_servers: ["static.geetest.com", "dn-staticdown.qbox.me"],
type: 'fullpage',
fullpage: '/static/js/fullpage.0.0.0.js'
}
},
_get_fallback_config: function () {
var self = this;
if (isString(self.type)) {
return self.fallback_config[self.type];
} else if (self.new_captcha) {
return self.fallback_config.fullpage;
} else {
return self.fallback_config.slide;
}
},
_extend: function (obj) {
var self = this;
new _Object(obj)._each(function (key, value) {
self[key] = value;
})
}
};
var isNumber = function (value) {
return (typeof value === 'number');
};
var isString = function (value) {
return (typeof value === 'string');
};
var isBoolean = function (value) {
return (typeof value === 'boolean');
};
var isObject = function (value) {
return (typeof value === 'object' && value !== null);
};
var isFunction = function (value) {
return (typeof value === 'function');
};
var callbacks = {};
var status = {};
var random = function () {
return parseInt(Math.random() * 10000) + (new Date()).valueOf();
};
var loadScript = function (url, cb) {
var script = document.createElement("script");
script.charset = "UTF-8";
script.async = true;
script.onerror = function () {
cb(true);
};
var loaded = false;
script.onload = script.onreadystatechange = function () {
if (!loaded &&
(!script.readyState ||
"loaded" === script.readyState ||
"complete" === script.readyState)) {
loaded = true;
setTimeout(function () {
cb(false);
}, 0);
}
};
script.src = url;
head.appendChild(script);
};
var normalizeDomain = function (domain) {
return domain.replace(/^https?:\/\/|\/$/g, '');
};
var normalizePath = function (path) {
path = path.replace(/\/+/g, '/');
if (path.indexOf('/') !== 0) {
path = '/' + path;
}
return path;
};
var normalizeQuery = function (query) {
if (!query) {
return '';
}
var q = '?';
new _Object(query)._each(function (key, value) {
if (isString(value) || isNumber(value) || isBoolean(value)) {
q = q + encodeURIComponent(key) + '=' + encodeURIComponent(value) + '&';
}
});
if (q === '?') {
q = '';
}
return q.replace(/&$/, '');
};
var makeURL = function (protocol, domain, path, query) {
domain = normalizeDomain(domain);
var url = normalizePath(path) + normalizeQuery(query);
if (domain) {
url = protocol + domain + url;
}
return url;
};
var load = function (protocol, domains, path, query, cb) {
var tryRequest = function (at) {
var url = makeURL(protocol, domains[at], path, query);
loadScript(url, function (err) {
if (err) {
if (at >= domains.length - 1) {
cb(true);
} else {
tryRequest(at + 1);
}
} else {
cb(false);
}
});
};
tryRequest(0);
};
var jsonp = function (domains, path, config, callback) {
if (isObject(config.getLib)) {
config._extend(config.getLib);
callback(config);
return;
}
if (config.offline) {
callback(config._get_fallback_config());
return;
}
var cb = "geetest_" + random();
window[cb] = function (data) {
if (data.status === 'success') {
callback(data.data);
} else if (!data.status) {
callback(data);
} else {
callback(config._get_fallback_config());
}
window[cb] = undefined;
try {
delete window[cb];
} catch (e) {
}
};
load(config.protocol, domains, path, {
gt: config.gt,
callback: cb
}, function (err) {
if (err) {
callback(config._get_fallback_config());
}
});
};
var throwError = function (errorType, config) {
var errors = {
networkError: '网络错误'
};
if (typeof config.onError === 'function') {
config.onError(errors[errorType]);
} else {
throw new Error(errors[errorType]);
}
};
var detect = function () {
return !!window.Geetest;
};
if (detect()) {
status.slide = "loaded";
}
var initGeetest = function (userConfig, callback) {
var config = new Config(userConfig);
if (userConfig.https) {
config.protocol = 'https://';
} else if (!userConfig.protocol) {
config.protocol = window.location.protocol + '//';
}
jsonp([config.api_server || config.apiserver], config.type_path, config, function (newConfig) {
var type = newConfig.type;
var init = function () {
config._extend(newConfig);
callback(new window.Geetest(config));
};
callbacks[type] = callbacks[type] || [];
var s = status[type] || 'init';
if (s === 'init') {
status[type] = 'loading';
callbacks[type].push(init);
load(config.protocol, newConfig.static_servers || newConfig.domains, newConfig[type] || newConfig.path, null, function (err) {
if (err) {
status[type] = 'fail';
throwError('networkError', config);
} else {
status[type] = 'loaded';
var cbs = callbacks[type];
for (var i = 0, len = cbs.length; i < len; i = i + 1) {
var cb = cbs[i];
if (isFunction(cb)) {
cb();
}
}
callbacks[type] = [];
}
});
} else if (s === "loaded") {
init();
} else if (s === "fail") {
throwError('networkError', config);
} else if (s === "loading") {
callbacks[type].push(init);
}
});
};
window.initGeetest = initGeetest;
return initGeetest;
});