// ==UserScript==
// @name        SosachReferrerDisable
// @description Отключить проверку referrer'а на сосаче, чтобы можно было переходить по прямым ссылкам на доски.
// @author      anon
// @version     1.1
// @include http*://2ch.hk/*
// @include http*://2ch.cm/*
// @include http*://2ch.pm/*
// @include http*://2ch.tf/*
// @include http*://2ch.wf/*
// @include http*://2ch.yt/*
// @include http*://2-ch.so/*
// @include http*://2ch.re/*
// @run-at document-start
// ==/UserScript==

/*--- checkForBadJavascripts()
This is a utility function, meant to be used inside a Greasemonkey script that
has the "@run-at document-start" directive set.
It Checks for and deletes or replaces specific <script> tags.
*/
function checkForBadJavascripts (controlArray) {
	/*--- Note that this is a self-initializing function. The controlArray
parameter is only active for the FIRST call. After that, it is an
event listener.
The control array row is defines like so:
[bSearchSrcAttr, identifyingRegex, callbackFunction]
Where:
bSearchSrcAttr True to search the SRC attribute of a script tag
false to search the TEXT content of a script tag.
identifyingRegex A valid regular expression that should be unique
to that particular script tag.
callbackFunction An optional function to execute when the script is
found. Use null if not needed.
	Usage example:
	checkForBadJavascripts ( [
	[false, /old, evil init()/, function () {addJS_Node (init);} ],
	[true, /evilExternalJS/i, null ]
	] );
*/
	if ( ! controlArray.length) return null;

	checkForBadJavascripts = function (zEvent) {
		for (var J = controlArray.length - 1; J >= 0; --J) {
			var bSearchSrcAttr = controlArray[J][0];
			var identifyingRegex = controlArray[J][1];

			if (bSearchSrcAttr) {
				if (identifyingRegex.test (zEvent.target.src) ) {
					stopBadJavascript (J);
					return false;
				}
			}
			else {
				if (identifyingRegex.test (zEvent.target.textContent) ) {
					stopBadJavascript (J);
					return false;
				}
			}
		}

		function stopBadJavascript (controlIndex) {
			zEvent.stopPropagation ();
			zEvent.preventDefault ();

			var callbackFunction = controlArray[J][2];
			if (typeof callbackFunction == "function")
			callbackFunction (zEvent.target);

			//--- Remove the node just to clear clutter from Firebug inspection.
			zEvent.target.parentNode.removeChild (zEvent.target);

			//--- Script is intercepted, remove it from the list.
			controlArray.splice (J, 1);
			if ( ! controlArray.length) {
				//--- All done, remove the listener.
				window.removeEventListener (
				'beforescriptexecute', checkForBadJavascripts, true
				);
			}
		}
	}

	/*--- Use the "beforescriptexecute" event to monitor scipts as they are loaded.
See https://developer.mozilla.org/en/DOM/element.onbeforescriptexecute
Note seems to work on acripts that are dynamically created, despite what
the spec says.
*/
	window.addEventListener ('beforescriptexecute', checkForBadJavascripts, true);

	return checkForBadJavascripts;
} 

checkForBadJavascripts ( [
[false, /document.referrer.indexOf/, null]
] );