Web/Manage/JS/swfupload/swfupload.proxy.js

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/*
	Proxy Plug-in
	
	Features:
		Times an upload to see if it appear suspiciously fast which might indicate a proxy server or anti-virus suite intercepting the upload. 
		If the upload seems too fast an uploadError event is fired with PROXY error code after the final uploadProgress event.
		
		Adds a SWFUpload setting allowing you to tweak the bytes/s for triggering the error:
			proxy_detect_threshold : 256000
			
		Adds an UPLOAD_ERROR entry called PROXY:
			function uploadError(file, errorCode, message) {
				if (errorCode === SWFUpload.UPLOAD_ERROR.PROXY) {
					alert("You might have a proxy!");
				}
			}
	*/

var SWFUpload;
if (typeof(SWFUpload) === "function") {
	SWFUpload.proxyDetect = {};
	SWFUpload.UPLOAD_ERROR.PROXY = -30300;
	
	SWFUpload.prototype.initSettings = (function (oldInitSettings) {
		return function (userSettings) {
			if (typeof(oldInitSettings) === "function") {
				oldInitSettings.call(this, userSettings);
			}
			
			this.ensureDefault = function (settingName, defaultValue) {
				this.settings[settingName] = (userSettings[settingName] == undefined) ? defaultValue : userSettings[settingName];
			};

			// List used to keep the speed stats for the files we are tracking
			this.proxyDetectFileStartTimes = {};
			this.proxyDetectSettings = {};

			this.ensureDefault("proxy_detect_threshold", 256000); // Default is 250 KB per second
			
			this.proxyDetectSettings.user_upload_progress_handler = this.settings.upload_progress_handler;
			this.proxyDetectSettings.user_upload_complete_handler = this.settings.upload_complete_handler;
			
			this.settings.upload_progress_handler = SWFUpload.proxyDetect.uploadProgressHandler;
			this.settings.upload_complete_handler = SWFUpload.proxyDetect.uploadCompleteHandler;
			
			
			delete this.ensureDefault;
		};
	}(SWFUpload.prototype.initSettings));

	SWFUpload.proxyDetect.uploadProgressHandler = function (file, bytesComplete, bytesTotal) {
		var ex1 = null, time, differenceMS, bps;
		try {
			if (typeof this.proxyDetectSettings.user_upload_progress_handler === "function") {
				this.proxyDetectSettings.user_upload_progress_handler.call(this, file, bytesComplete, bytesTotal);
			}
		} catch (ex1) { }
			
		
		if (bytesComplete === 0) {
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