Задание. 1. Начните выполнение работы с темы «Линейная краевая задача»

1. Начните выполнение работы с темы «Линейная краевая задача». Выбрав с помощью меню один из методов решения линейной краевой задачи, перейдите к пункту меню «Параметры». Наберите следующую краевую задачу:

для Решением этой задачи является функция Установите значение шага сетки h = 0,05.

1.1. Найдите решение этой задачи методом построения общего решения и методом прогонки для разных р, начиная с умеренных значений и увеличивая их до величины порядка 1200. Сравните получаемые решения с точным и объясните наблюдаемые эффекты. Попытайтесь найти решение этой же задачи методом стрельбы. Проанализируйте, как влияет при разных р точность задания недостающего начального условия на левом конце интервала на успешное решение задачи методом стрельбы.

1.2. Объясните полученные результаты. Замените левое краевое условие (положите, например, и посмотрите, как изменится характер решения.

1.3. Выполните п. 1.1, 1.2 для задачи:

Eе точное решение Объясните полученные результаты. Найдите условие устойчивости метода прогонки для данной задачи.

2. Получите численное решение следующих нелинейных краевых задач:

2.1.

p = 1, 4, 7, 25, 50, 100;

2.2.

2.3.

3. Рассмотрите следующие краевые задачи:

3.1.

3.2.

Параметр a меняется от 0 до 2. Что при этом происходит с решением задач? Почему в задаче 3.2 при значениях a > 1,4999… не работает метод линеаризации?

Замечание. Задача 3 подробно рассмотрена в [29].

4. Рассмотреть две сингулярно-возмущенные задачи (с малым параметром при старших производных):

и

Считаем Какие численные методы позволят получить решение каждой из этих задач? Почему?

Контрольные вопросы

/////////// SEARCH /////////// var g_aEng; var g_loc; // Initialize namespace, use existing context var searchshield = searchshield || {}; searchshield.clockUrl; // constants searchshield.SCORE_SS_SAFE = 1; searchshield.SCORE_SS_CAUTION = 2; searchshield.SCORE_SS_WARNING = 3; searchshield.SCORE_SS_BLOCK = 4; searchshield.SCORE_SS_VERISIGN = 7; searchshield.BLOCK_NONE = 0; searchshield.BLOCK_NORMAL = 1; searchshield.BLOCK_PHISH = 2; searchshield.BLOCK_YAHOO = 3; searchshield.XPLCHECK_RESULT_SEV_NONE = 0; searchshield.XPLCHECK_RESULT_SEV_LOW = 1; searchshield.XPLCHECK_RESULT_SEV_MED = 2; searchshield.XPLCHECK_RESULT_SEV_BLOCK = 3; searchshield.VERISIGN_SPLIT_NOTEST = 0; searchshield.VERISIGN_SPLIT_TESTA = 1; searchshield.VERISIGN_SPLIT_TESTB = 2; searchshield.needLivePhishCheck = false; searchshield.allowedSites = []; searchshield.enabled = function (doc) { var result = searchshield.avgCallFunc(doc, 'GetSearchEnabled'); return (result == '1'? 1: 0); }; searchshield.init = function (doc) { if ((doc == null) || (doc.location == null) || (doc.location.href.search(/about:/)!= -1)) return; if (!searchshield.enabled(doc)) return; if (!g_aEng) g_aEng = searchshield.Search.prototype.detectEngine(doc.location.href); if (!g_aEng) return; // init search object (not declared or is null) if (typeof xplSearch === 'undefined') { // global xplSearch = new searchshield.Search(); // reset the links added flag xplSearch.new_links = false; xplSearch.doc = doc; xplSearch.href = xplSearch.doc.location.href; xplSearch.uri = searchshield.parseLink(xplSearch.href); xplSearch.engine = new searchshield[g_aEng+'SearchEngine'](xplSearch) xplSearch.addEngine(xplSearch.engine); searchshield.launch(doc); } if (doc.location.href!= g_loc) { g_loc = doc.location.href; if ((typeof xplSearch!== 'undefined') && (xplSearch!= null)) searchshield.launch(doc); } }; searchshield.launch = function (doc) { // IE specific check searchshield.quirksMode = (self.top.document.compatMode == 'BackCompat'); searchshield.docMode = parseInt(navigator.userAgent.split('MSIE')[1]); if ((self === top) && (self.document === doc)) { if (!xplSearch.engine) return; // set verdict display config xplSearch.engine.setRatingsConfig(doc); // init the alert popup searchshield.initPopupAlert(doc); if (xplSearch.engine.type!= 'inline') { // save function reference for memory clean up later var fn = function(event){avglsflyover.hide(null)}; //hide flyover if these events occur window.detachEvent('onscroll', fn); window.attachEvent('onscroll', fn); doc.detachEvent('onkeydown', fn); doc.attachEvent('onkeydown', fn); } // only start monitor on top doc searchshield.avgPageMonitor.start(doc); } return; }; // search monitors and processors - doc is always top most document searchshield.avgPageMonitor = { previousUrl: null, start: function(doc){ searchshield.avgPageMonitor.stop(); searchshield.avgPageMonitor.process(doc); searchshield.avgPageMonitor.timeoutID = window.setTimeout(function(){searchshield.avgPageMonitor.start(doc)}, 1000); }, process: function(doc){ var currentUrl = doc.location.href; var refresh = 0; if (this.previousUrl!= currentUrl) { this.previousUrl = currentUrl; avgreport.scanResult(doc, currentUrl); refresh = (xplSearch.engine.name == 'google')? 1: 0; } searchshield.avgProcessSearch(doc, refresh); }, stop: function(){ if (searchshield.avgPageMonitor.timeoutID) { window.clearTimeout(searchshield.avgPageMonitor.timeoutID); delete searchshield.avgPageMonitor.timeoutID; } } }; searchshield.avgProcessSearch = function (doc, refresh) { // doc may be about:Tabs or about:Blank if (!doc) return; if (!searchshield.enabled(doc)) return; if (!searchshield.clockUrl) searchshield.clockUrl = searchshield.avgCallFunc(doc, 'GetIconUrl', '0'); xplSearch.clockUrl = searchshield.clockUrl if (!xplSearch.engine) return; // get result links xplSearch.links = []; var links = searchshield.avgGetSearchLinks(doc, xplSearch.engine, refresh); searchshield.needLivePhishCheck = false; for (var i=0; i < links.length; i++) { var isPhishing = searchshield.avglsCheckandUpdate(links[i]); if (isPhishing) searchshield.needLivePhishCheck = true; } if (searchshield.needLivePhishCheck) { var prev = '1'; if (xplSearch.engine.type == 'inline') prev = '0'; searchshield.avgCallFunc(doc, 'GetPhishingResults', prev); searchshield.needLivePhishCheck = false; } else if (links.length > 0 && xplSearch.engine.type!= 'inline') { searchshield.avgCallFunc(doc, 'FinalScanComplete'); } // attach click handlers for popup alerts doc.body.detachEvent("onclick", searchshield.blockClick); doc.body.attachEvent("onclick", searchshield.blockClick); doc.body.detachEvent("ondblclick", searchshield.blockClick); doc.body.attachEvent("ondblclick", searchshield.blockClick); }; searchshield.avgGetSearchLinks = function (doc, engine, refresh) { if (!doc.body) return; var alltags = doc.body.getElementsByTagName('a'); for (var i = 0; i < alltags.length; i++) { if (!refresh) { // no checked test if refreshing - google if (alltags[i].getAttribute('avglschecked')) continue; } // ignore linked resources if (alltags[i].tagName == 'LINK') continue; // ignore in-page bookmarks and javascript if ((!alltags[i].href) || (alltags[i].href.charAt(0) == '#') || // in-page bookmark (alltags[i].href.indexOf("javascript") == 0)) continue; // ignore verdicts if (/XPLSS_/.test(alltags[i].id)) continue; // ignore flyover anchors if (/linkscanner|avgthreatlabs|avg\.com/.test(alltags[i].href)) continue; var href = engine.includeLink(alltags[i]); if (!href) continue; var newNode = engine.search.addLink(alltags[i], href); engine.addImage(newNode, engine.search.clockUrl, false); } // recursivesly process all frames var docFrames = doc.frames; if (docFrames && engine.processFrames) { for (var j = 0; j < docFrames.length; j++) { var attr; var frameDoc; try { attr = docFrames[j].frameElement.className; frameDoc = docFrames[j].document; } catch(err){} //TODO: make frame processing an engine function or at least make exclusions an engine property // 'editable' frame it's probably a gmail reply if (attr && (attr.indexOf("editable")!= -1)) continue; if (frameDoc) searchshield.avgGetSearchLinks(frameDoc, engine, 0); } } return engine.search.links; }; searchshield.avglsCheckandUpdate = function (linkNode) { if (!xplSearch) return; // element is the search result anchor var element = linkNode.element; var href = linkNode.href; var result = searchshield.avgCallFunc(xplSearch.doc, 'CheckSite', href, element.href); if (result == null) return; var resultParse = result.split('::'); var phishing = resultParse[0]; // if phishing then rest of array does not exist. if (phishing == 1) return true; if (resultParse.length < 8) return; var hash = resultParse[1]; var score = resultParse[2]; var new_image = resultParse[3]; var alt_image = resultParse[4]; var flyover = resultParse[5]; var click_thru= resultParse[6]; var altClick_thru = resultParse[7]; // iterate to get verdict anchor nextElem = element.nextSibling; while (nextElem) { if (nextElem.nodeType == 1 && nextElem.id && (nextElem.id.indexOf("XPLSS_")!= -1)) break; nextElem = nextElem.nextSibling; } return xplSearch.engine.updateImage(hash, xplSearch.searchHash, score, new_image, alt_image, flyover, click_thru, altClick_thru); }; // click event handler - shows popup for links of caution and warning severity searchshield.blockClick = function(event) { if (!event) event = window.event; // no action needed if click is not the left mouse button if (event.button!= 0) return; var anchor = searchshield.getAnchorNode(event.srcElement, function(node) {return ((node.tagName.charAt(0) == "H") || (node.tagName.charAt(0) == "D") || (node.tagName.charAt(0) == "T"))} ); if ((anchor == null) || (anchor.href == null)) return true; // ignore if anchor is on an xpl verdict if (!!anchor.id) { if (anchor.id.indexOf('LXPLSS_') == 0) return true; if (anchor.id.indexOf('XPLSS_INTR') == 0) { searchshield.allowedSites.push(searchshield.GetDomain(anchor.href)); return true; } } // VeriSign A/B Split reporting - only for VerSign domains var avglschecked = anchor.getAttribute("avglschecked"); if (avglschecked && avglschecked!= 1) { var sPos = avglschecked.indexOf("S"); var hash = (sPos > -1)? avglschecked.substring(0, sPos): null; var split = (sPos > -1)? avglschecked.substring(sPos+1): null; if (hash && split && split!= searchshield.VERISIGN_SPLIT_NOTEST) { // check updated verdict anchor for verisign domain var d = event.srcElement.ownerDocument; if (d.getElementById("LXPLSS_" + hash + "U" + searchshield.SCORE_SS_VERISIGN)) { searchshield.avgCallFunc(d, "RecordVSClick", hash, d.location.href); } } } var link = anchor.href; var verdict = searchshield.getAvgImage(anchor); var score = -1; var img_id = ''; if (verdict!= null) { score = verdict.score; img_id = verdict.rawId; } // show popup alert (upper left) if ((score >= searchshield.SCORE_SS_CAUTION) && (score = elementRect.bottom) && (nextImgRect.left -1) return true; return false; }; searchshield.FilterUrl = function (url, filter) { if (!url || (url.length < 1)) return false; if (!filter ||!(filter instanceof Array)) return false; var parts = url.split('/'); if ((parts == null) || (parts.length < 3)) return false; var domain = parts[2]; for (var i = 0; i < filter.length; i++) { if (domain.indexOf(filter[i])!= -1) return true; } return false; }; searchshield.GetDomain = function (url) { if (url!= null) { // get url domain var parts = url.split('/'); if ((parts!= null) && (parts.length >= 3)) { return parts[2].toLowerCase(); } } return url; }; searchshield.getUrlContents = function (url) { if (url == null) return null; // don't query if local url if (url.indexOf("linkscanner://")!= -1) return null; try { req = new XMLHttpRequest(); req.open("GET", url, false); req.send(null); if (req.status == 200) return req.responseText; else return null; } catch (err) { // nothing to do return null; } }; searchshield.parseLink = function (href, simpleMode) { var uri = {}; var parameter = { complex: { pattern: /^(?:([a-z]+):(?:([a-z]*):)?\/\/)?(?:([^:@]*)(?::([^:@]*))?@)?((?:[a-z0-9_-]+\.)+[a-z]{2,})(?::(\d+))?(?:([^:\?\#]+))?(?:\?([^\#]+))?(?:\#([^\s]+))?$/i, element: ['source','scheme','subscheme','user','pass','host','port','path','query','fragment'] }, simple: { pattern: /^(?:([a-z]+):\/\/)?((?:[a-z0-9_-]+\.)+[a-z]{2,})(?:\/)([^:\?]+)?(?:([\?|\#])([^\?]+))?$/i, element: ['source','scheme','host','path','delimiter','query'] } }; var mode = simpleMode!== false? 'simple': 'complex'; var pattern = parameter[mode].pattern; var element = parameter[mode].element; if (!href) return uri; var matches = href.match(pattern); if (matches) { // -------------------- // iterate over the matches array and populate uri properties // using the respective element parameter as the name. // NOTE: set raw property type as String to make inArray() // work properly with instanceof. // -------------------- for (var i=0; i < matches.length; i++) uri[element[i]] = new String(matches[i] || ""); // -------------------- // create an array, hostArray, from host, for example, // host="www.google.com" and hostArray=["www","google","com"] // -------------------- uri.hostArray = uri.host.split("."); // -------------------- // create an array, qsArray, from query, for example, // query='hl=en&q=javascript&btnG=Search&aq=f&aqi=g10&aql=&oq=&gs_rfai=' // qsArray=[{hl:'en'},{q:javascript},...,(qs_rfai:''}] // // $0=entire match, $1=capture 1, $2=capture 2 // must include $0 even though it is unused so // the replace works properly // -------------------- uri.qsArray = searchshield.parseQuery(uri.query); } //non-standard urls require a fail-safe that relies on simply splitting the href function splitLink(href) { // split the href on '/' var linkParts = href.split("/"); // need domain and path if ((linkParts == null) || (linkParts.length < 2)) return false; var uri = { delimiter: (linkParts[3]).substring(0,1), host: linkParts[2], hostArray: (linkParts[2]).split('.'), path: (linkParts[3]).substring(1), qsArray: [], query: '', scheme: (linkParts[0]).substring(0, linkParts[0].length-1), source: href }; return uri; } if (!uri.host) uri = splitLink(href); return uri; }; searchshield.parseQuery = function (qs) { var qsArray = []; qs.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) { if ($1) qsArray[$1] = $2; } ); return qsArray; }; // general functions searchshield.arrayKeys = function (array) { var keys = new Array(); for(k in array) keys.push(k); return keys; }; searchshield.inArray = function (key, array, caseSensitive, exactMatch) { if (! array instanceof Array) return false; if (caseSensitive!== true) caseSensitive = false; if (exactMatch!== false) exactMatch = true; if (key instanceof String) { for (var i=0; i < array.length; i++) { var k = caseSensitive? key.valueOf(): key.valueOf().toLowerCase(); var a = caseSensitive? array[i]: array[i].toLowerCase(); if(exactMatch && k === a) return true; else if (!exactMatch && (-1!== k.indexOf(a))) return true; } } else if (key instanceof Array) { for (var i=0; i < array.length; i++) for (var j=0; j < key.length; j++) { var k = caseSensitive? key[j]: key[j].toLowerCase(); var a = caseSensitive? array[i]: array[i].toLowerCase(); if (exactMatch && k === a) return true; else if (!exactMatch && (-1!== k.indexOf(a))) return true; } } return false; }; searchshield.getClickHandlerParams = function(clickHandler) { var re = /((?:'[^']*')|[\w]*)(?:,|\))/ig; var chParams = []; clickHandler.replace(re, function($0, $1, $2){ if ($1) chParams.push($1); } ); return chParams; }; // general use functions - end // Search constructor searchshield.Search = function() { this.doc = null; this.engine = null; this.engines = null; this.links = null; this.uri = null; this.searchHash = null; this.checkUrl = null; this.useLocalImgs = null; this.clockUrl = null; // create engine list (actually key/value object will be used) this.engineList = {}; }; searchshield.Search.prototype.getSearchNames = function() { // order is important var names = [ 'Google', 'AVGGoogle', 'AltaVista', 'AVGYahoo', 'Yahoo', 'Bing', 'MSN', // MSN redirects to BING 'Baidu', 'Earthlink', 'AOL', 'Ask', 'Yandex', 'Seznam', 'Webhledani', 'eBay', ///temp 'Digg', 'Slashdot', 'Twitter', 'GMail', 'Facebook', 'MySpace' ]; return names; }; searchshield.Search.prototype.detectEngine = function(href) { if (!href) return; var aEng = searchshield.Search.prototype.getSearchNames(); var aEngLen = aEng.length; for (var i=0; i < aEngLen; i++) { if (searchshield[aEng[i] + 'SearchEngine'].prototype.validSearch(href)) return aEng[i]; } return; }; searchshield.Search.prototype.addEngine = function(engine) { if (!this.engines) this.engines = new Array(); this.engines.push(engine); }; searchshield.Search.prototype.addLink = function(inElement, inHref) { if (!this.links) this.links = new Array(); var hrefHash; try { hrefHash = searchshield.avgCallFunc(this.doc, 'GetHash', inHref); } catch (e){} var newNode = { element: inElement, href: inHref, hash: hrefHash, search: this.searchHash }; this.links.push(newNode); return newNode; } // process the search result page after all search engines have been added searchshield.Search.prototype.process = function(doc) { // only process when searchshield is enabled if (!searchshield.enabled(doc)) return; this.doc = doc; this.href = this.doc.location.href; this.uri = searchshield.parseLink(this.href); try { this.searchHash = searchshield.avgCallFunc(this.doc, 'GetHash', this.href); // get any previously active engine this.engine = this.engineList[this.searchHash.toString()]; } catch (e) {} /* Process Steps: 1. Add all supported search engines 2. Identify the active search engine 3. Get all document links and add AVG images */ // STEP 1 - Add all supported search engines if (!this.engines) { var aEng = xplSearch.getSearchNames(); var aEngLen = aEng.length; for (var i=0; i < aEngLen; i++) { xplSearch.addEngine(new searchshield[aEng[i]+'SearchEngine'](this)); } } // search the engines if we didn't find one if (!this.engine) { // STEP 2 - Identify the active search engine var engLen = this.engines.length; for (var i = 0; i < engLen; i++) { if (this.engines[i].validSearch()) { this.engine = this.engines[i]; break; } } // create a new engine instance to store this.engineList[this.searchHash.toString()] = this.engine; // init this search, if < 1 either an error or disabled //var sdkInit = 0; //try { // sdkInit = xpl_sdk.SXPL_InitSearch(this.href); //} //catch(e){} //if (sdkInit < 1) // return false; } // return immediately if there is not an active search engine if (!this.engine) return false; try { // base url to check for icons this.checkUrl = searchshield.avgCallFunc(this.doc, 'GetIconUrl', '1'); // check if using linked or local icons this.useLocalImgs =!searchshield.getUrlContents(this.checkUrl); // get the clock url this.clockUrl = searchshield.avgCallFunc(this.doc, 'GetIconUrl', '0'); } catch(e){} // STEP 3 - Get all document links and add AVG images var alltags = this.doc.getElementsByTagName("*"); // this method works for IE, FF and Chrome for (var i=0; i < alltags.length; i++) { // ignore verdicts if (alltags[i].id && (alltags[i].id.indexOf("LXPLSS_")!= -1)) continue; //should the link be included? Make sure includeLink always returns an href else FALSE, var href = this.engine.includeLink(alltags[i]); if (!href) continue; var newNode = this.addLink(alltags[i], href); this.engine.addImage(newNode, this.clockUrl, false); } return (this.links? this.links.length: false); }; //////////////// SEARCH //////////////// //////////////// SEARCH ENGINE //////////////// // Interface for a SearchEngine object searchshield.SearchEngine = function(search) { this.search = search; this.type = 'standard'; this.processFrames = false; this.new_links = true; this.onlyPrimaries = true; this.inline = { clockImage: "linkscanner://clock12.png", image: [ "linkscanner://safe12.png", "linkscanner://caution12.png", "linkscanner://warning12.png", "linkscanner://blocked12.png" ], color: { classname: ["green","yellow","orange","red"], border: ["#00A120", "#EAA500", "#F57301", "#D20003"], background: ["#C3E5CA", "#FEEFAE", "#FFD3B0", "#F5D4C1"] } }; this.filter_urls = [ "ad.doubleclick.net", "ads1.revenue.net", "aslads.ask.com", "bluestreak.com", "clickbacktrack.net", "clickbank.net", "clickboothlnk.com", "clickmanager.com", "clickserve.cc-dt.com", "dartsearch.net", "clicktraxmedia.com", "clk.atdmt.com", "dpi-digialphoto.com", "feedpoint.net", "hypertracker.com", "jdoqocy.com", "kqzyfj.com", "m1428.ic-live.com", "mediaplex.com", "mr.mdmngr.com", "n339.asp-cc.com", "offeredby.net", "offerweb.com", "pinktrax.com", "pinktrax.com", "pixel1523.everesttech.net", "qckjmp.com", "r.rd06.com", "revenuewire.net", "s0b.bluestreak.com", "s2.srtk.net", "servedby.advertising.com", "store.yahoo.com", "tf8.cpcmanager.com", "thetoptracker.com", "track.searchignite.com", "tracking.searchmarketing.com", "www.dpbolvw.net", "www.rkdms.com", "www.yellowbookleads.com" ]; this.shortened_urls = [ "3.ly", "bit.ly", "is.gd", "tr.im", "short.to", "tiny.cc", "tinyurl.com", "lnk.ms", "msplinks.com" ]; this.showCleanVerdicts = true; this.showLowRiskVerdicts = true; this.showMedRiskVerdicts = true; this.VeriSignSplit = searchshield.VERISIGN_SPLIT_NOTEST; }; searchshield.SearchEngine.prototype.flyoverExists = function (doc) { return!!doc.getElementById("XPLSS_Flyover"); }; searchshield.SearchEngine.prototype.inlineExists = function (doc) { return!!doc.getElementById("XPLSS_InlineFlyover"); }; searchshield.SearchEngine.prototype.validSearch = function(href) { return false; }; searchshield.SearchEngine.prototype.includeLink = function(link) { return false; }; searchshield.SearchEngine.prototype.insertNodes = function(node, doc) { var element = node.element; var parentNode = node.element.parentNode; if (parentNode == null) { // try and find element again based on the hash element = doc.getElementById("xplid_" + node.hash); parentNode =!!element? element.parentNode: null; } var insertNode =!!element? element.nextSibling: null; while ((insertNode != null) && (insertNode.tagName != null) && (insertNode.tagName == "SPAN")) { insertNode = insertNode.nextSibling; } return [insertNode, parentNode]; }; searchshield.SearchEngine.prototype.addImage = function(node, image, hidden) { var element = node.element; var hash = node.hash; var score = node.score; // set verdict display configuration var doc = element.ownerDocument; if (this.type!= 'inline' &&!doc.getElementById('XPLSS_Flyover')) searchshield.initFlyover(doc, this); // get the proper insertion point for the image var insertNodes = this.insertNodes(node, doc); var insertNode = insertNodes[0]; var parentNode = insertNodes[1]; if (!parentNode) return; // see if we already have an image if ((insertNode != null) && (insertNode.id != null) && (insertNode.id.indexOf("XPLSS_") > -1)) { return; } // mark search result anchor so it isn't processed repeatedly if (score == undefined) element.setAttribute("avglschecked", hash + "S" + this.VeriSignSplit); // create a new image var img = doc.createElement('img'); img.src = image; img.id = "XPLSS_" + hash; img.style.borderStyle = "none"; img.style.margin = "0 3px"; // for IE, specify these style attributes to prevent inadvertent inheritance from parent if (img.width && img.height) { img.style.width = img.width + 'px'; img.style.height = img.height + 'px'; } // apply custom element styles this.updateElementStyle(img, this.addImageStyle); // create the link element var anchor = doc.createElement("A"); anchor.setAttribute("id", "LXPLSS_" + hash); if ((hidden!= null) && (hidden == true)) { // hiding the parent will also hide its child nodes anchor.style.display = "none"; } // Default anchor styles //Over-ride possible border style with inline declaration anchor.style.borderStyle = "none"; // apply custom element styles this.updateElementStyle(anchor, this.addAnchorStyle); if (score == searchshield.SCORE_SS_VERISIGN) { anchor.style.textDecoration = "none"; anchor.style.background = "none repeat scroll 0 0 transparent"; } // append the image to the link anchor.appendChild(img); // insert the node as either a sibling or a child if (insertNode!= null) parentNode.insertBefore(anchor, insertNode); else parentNode.appendChild(anchor); return anchor; }; searchshield.SearchEngine.prototype.updateImage = function (hash, search, score, image, alt_image, flyover, click_thru, altClick_thru) { var updated = false; var frameDoc = this.search.doc; var docFrames = frameDoc.frames; var frameElem; if (docFrames && this.processFrames) { for (var i=0; i < docFrames.length; i++) { try { if (docFrames[i].document.getElementById(hash)) { frameElem = docFrames[i].frameElement; frameDoc = docFrames[i].document; break; } } catch(err){} } } while ((element = frameDoc.getElementById(hash))!= null) { // check configuration to determine if verdict display property var showVerdict = true; var nSeverity = Number(score - 1); switch (nSeverity) { case searchshield.XPLCHECK_RESULT_SEV_LOW: showVerdict = this.showLowRiskVerdicts; break; case searchshield.XPLCHECK_RESULT_SEV_MED: showVerdict = this.showMedRiskVerdicts; break; case searchshield.XPLCHECK_RESULT_SEV_NONE: showVerdict = this.showCleanVerdicts; break; default: if (score == searchshield.SCORE_SS_VERISIGN) showVerdict = this.showCleanVerdicts; break; } // remove image if no url specified if ((!showVerdict) || (image == null) || (image.length < 1)) { // hide the parent anchor node element.parentNode.style.display = "none"; // mark the id as being hidden (element is the image) element.id = element.id + "H"; updated = true; // if not a verisign score if (score!= searchshield.SCORE_SS_VERISIGN) continue; } // cleanup flyover, replace any new lines or single quotes flyover = searchshield.CleanupHTML(flyover); // mark the id as having been updated element.id = element.id + "U" + score; element.src = image; element.attachEvent("onmouseover", function(e){avglsflyover.popup(e, hash, search, flyover)}); element.attachEvent("onmouseout", function(e){avglsflyover.hide(e)}); // check for attribute updates (elementAttribute is an associative array (i.e., object) if (this.elementAttribute) { for (a in this.elementAttribute) { if(this.elementAttribute[a]) element.setAttribute(a, this.elementAttribute[a]); } } // To dynamically reduce verdict image size if it causes its container to scroll // when not showing alt images determine if the element containing // the verdict image is scrolling and decrease the image size by // the scroll amount (min size is 80% or original) var reduceBy = 0.8; var scrl = 0; if (!alt_image || this.omitAltImage || this.VeriSignSplit == searchshield.VERISIGN_SPLIT_TESTB) { try{ var maxLoop = 5; var cN = element.parentNode.parentNode; //image->anchor->containerNodes... while (cN && maxLoop--) { if (cN.tagName == "DIV" || cN.tagName == "SPAN") { // get object height depending on ie document mode var clientHeight = (cN.clientHeight == 0 || (this.search.doc.documentMode && this.search.doc.documentMode < 8))? cN.offsetHeight: cN.clientHeight; scrl = cN.scrollHeight - clientHeight; break; } cN = cN.parentNode; } if (0 < scrl) { var eH = (element.height - scrl)/element.height; if (reduceBy > eH) eH = reduceBy; var newDim = Math.ceil(eH*element.height); element.height = newDim; element.width = newDim; element.style.height = newDim + "px"; element.style.width = newDim + "px"; } } catch(e){} } // set default style attributes element.style.display = ""; // if verisign icon showing move our icon up for better centering of the 2 // except for IE7 browser - it does not like this style try { var ieVersion = parseFloat(navigator.appVersion.split("MSIE")[1]); if (alt_image && (alt_image.length > 0) && ieVersion!= 7) element.style.verticalAlign = "10%"; } catch(err){}; // apply custom element styles this.updateElementStyle(element, this.updateImageStyle) // update the click thru var link = this.search.doc.getElementById("L" + hash); if (link) { link.href = click_thru; link.id = link.id + "U" + score; } updated = true; // add the alternate image if supplied BUT not on avg yahoo if ((alt_image) && (alt_image.length > 0) && (!this.omitAltImage) && (this.VeriSignSplit!= searchshield.VERISIGN_SPLIT_TESTB)) { var vhash = hash.substring(hash.indexOf("_")+1); // create a temporary link node var tmp_node = { element: element.parentNode, href: altClick_thru, hash: vhash + "VU" + score, search: this.searchHash, score: score }; var altAnchor = this.addImage(tmp_node, alt_image, false); if (altAnchor && altAnchor.firstChild) { altAnchor.firstChild.setAttribute("onmouseover", ""); altAnchor.href = altClick_thru; } } } if (updated!= false) { this.resizeFrame(frameElem); return true; } return false; }; searchshield.SearchEngine.prototype.updateElementStyle = function (element, elementStyle) { if (elementStyle) { // a NULL attribte value will unset it for(attr in elementStyle) { try { if (element.style.setAttribute) element.style.setAttribute(attr, elementStyle[attr]); else element.style[attr] = elementStyle[attr]; } catch(err){} } } }; searchshield.SearchEngine.prototype.resizeFrame = function (frameElem) { // resize frame to prevent unwanted scrolling after inserting verdicts // ignore inline and non-frame engines if ((this.type == 'inline') || (!this.processFrames)) return; // ensure all required elements are available if ((frameElem == null) || (frameElem.style == null) || (frameElem.contentWindow == null)) return; // if frame is scrolling vertically then resize var frameHeight = parseInt(frameElem.style.height, 10); if (!isNaN(frameHeight) && (frameHeight < frameElem.contentWindow.document.body.scrollHeight)) frameElem.style.height = frameElem.contentWindow.document.body.scrollHeight + 'px'; return; }; searchshield.SearchEngine.prototype.getImgElement = function (element) { // return an xpl img element associated with a given element if (element == null) return null; // go up the parent tree looking for a header or div while ((element.parentNode!= null) && (element.tagName.charAt(0)!= "H") && (element.tagName.charAt(0)!= "D") && (element.tagName.charAt(0)!= "T")) { element = element.parentNode; } // if all the way to the top, nothing if ((element.tagName == "HTML") || (element == null)) return null; // get image tags, if none we are done var imgTags = element.getElementsByTagName("IMG"); if ((imgTags == null) || (imgTags.Length < 1)) return null; for (var i = 0; i < imgTags.length; i++) { if ((imgTags[i].id == null) || (imgTags[i].id.indexOf("XPLSS_") == -1)) continue; return imgTags[i]; } // else didn't find anything return null; }; searchshield.SearchEngine.prototype.setRatingsConfig = function (doc) { // get verdict configuration, need at least severity var results = searchshield.avgCallFunc(doc, 'GetRatingsConfig'); var parts =!!results? results.split('::'): null; if (parts!= null && parts.length >= 5) { //if set to default then get config value if (this.showCleanVerdicts === true) this.showCleanVerdicts = (parseInt(parts[0]) == 1)? true: false; if (this.showLowRiskVerdicts === true) this.showLowRiskVerdicts = (parseInt(parts[1]) == 1)? true: false; if (this.showMedRiskVerdicts === true) this.showMedRiskVerdicts = (parseInt(parts[2]) == 1)? true: false; this.VeriSignSplit = (parseInt(parts[4])); } return true; }; searchshield.SearchEngine.prototype.init_inline_ratings = function (doc) { if ((doc == null) || (doc.getElementById("XPLSS_InlineFlyover"))) return; if (!searchshield.quirksMode) { // create style for inline flyovers var styleTag = doc.createElement("style"); styleTag.setAttribute("id","avgILFOStyle"); var headTag = doc.getElementsByTagName("head")[0]; headTag.appendChild(styleTag); var inline_style = styleTag.styleSheet; // stub in the base image name as the url inline_style.addRule(".avgILFO", "background: url(linkscanner://default_inline_border_tl.png) no-repeat top left;"); inline_style.addRule(".avgILFO", "width:0px; font-size:0px; z-index:9999; visibility:hidden; position:absolute; left:-5000px;"); inline_style.addRule(".avgILFO_content", "background: url(linkscanner://default_inline_border_r.png) top right repeat-y;"); inline_style.addRule(".avgILFO_content","font-size:10px; color:black; padding:0px 10px; text-align:left; word-wrap:break-word; line-height:130%"); inline_style.addRule(".avgILFO_head", "background: url(linkscanner://default_inline_border_tr.png) no-repeat top right;"); inline_style.addRule(".avgILFO_head", "width:0px; height:5px;"); inline_style.addRule(".avgILFO_head div","height:5px;"); inline_style.addRule(".avgILFO_foot", "background: url(linkscanner://default_inline_border_bl.png) no-repeat bottom left"); inline_style.addRule(".avgILFO_foot", "height:5px;"); inline_style.addRule(".avgILFO_foot div", "background: url(linkscanner://default_inline_border_br.png) no-repeat bottom right"); inline_style.addRule(".avgILFO_foot div", "height:5px; width:0px;"); } try { // create the popup box var box = doc.createElement("DIV"); if (searchshield.quirksMode) { box.style.visibility = "hidden"; box.style.position = "absolute"; box.style.left = "-5000px"; } box.setAttribute("id", "XPLSS_InlineFlyover"); box.setAttribute("class", "avgILFO"); doc.body.appendChild(box); box = null; } catch(boxErr){} }; searchshield.SearchEngine.prototype.show_inline_ratings = function (doc, node, image) { var href = node.href; var anchor = node.element; if ((href == null) || (href.length < 1)) return; if (avglsinlineflyover.imageExists(anchor)) return; // mark search result anchor so it isn't processed repeatedly anchor.setAttribute("avglschecked", "1"); // get verdict this.display_inline(doc, anchor, href, node, false); }; searchshield.SearchEngine.prototype.display_inline = function (doc, anchor, href, node, update, min_severity) { // min_severity is the lowest severity to display, so setting it to // 1 would not display safe icons var results = searchshield.avgCallFunc(doc, 'MalsiteCheck', href); if (results == null) return; var parts = results.split('::'); // need at least severity if (parts == null) return; var nSeverity = parseInt(parts[0]); if (!update && nSeverity == searchshield.XPLCHECK_RESULT_SEV_NONE) { var shortUrl = searchshield.FilterUrl(href, this.shortened_urls); if (shortUrl) { // shortened url verdicts display later var engine = this; anchor.attachEvent("onmouseover", function(event){avglsinlineflyover.mouseOverHandler(event, doc, engine)}); return; } } // severity -1 signifies sb.dat load failure if (nSeverity == -1) nSeverity = searchshield.XPLCHECK_RESULT_SEV_NONE; //blacklist url var blShortUrl = false; if (nSeverity == searchshield.XPLCHECK_RESULT_SEV_BLOCK) { var shortUrl = searchshield.FilterUrl(href, this.shortened_urls); if (shortUrl) blShortUrl = true; } // need xlated cat tag and category if (parts.length < 3) return; // check the minimum to display if ((min_severity!= null) && (nSeverity < min_severity)) return; if (nSeverity == searchshield.XPLCHECK_RESULT_SEV_LOW &&!this.showLowRiskVerdicts) { if (update) this.avg_ls_inline_hide_verdict(anchor); return; } if (nSeverity == searchshield.XPLCHECK_RESULT_SEV_MED &&!this.showMedRiskVerdicts) { if (update) this.avg_ls_inline_hide_verdict(anchor); return; } if (nSeverity == searchshield.XPLCHECK_RESULT_SEV_NONE &&!this.showCleanVerdicts) { if (update) this.avg_ls_inline_hide_verdict(anchor); return; } if (update) this.update_inline_image(anchor, nSeverity, parts); else this.add_inline_image(doc, anchor, nSeverity, parts, blShortUrl); }; searchshield.SearchEngine.prototype.avg_ls_inline_hide_verdict = function (anchor) { var image = avglsinlineflyover.getImage(anchor); if (image) { image.style.display = "none"; if (image.parentNode && image.parentNode.id == "avg_ls_anch") image.parentNode.style.display = "none"; } }; searchshield.SearchEngine.prototype.update_inline_image = function (anchor, nSeverity, aRisk) { // update the image already in the page if (anchor && anchor.firstChild) { var html = ''; var image = ''; if (aRisk!= null && nSeverity!= null) { var riskCategory = aRisk[1]; var riskName = aRisk[2]; var bgColor = this.inline.color.background[nSeverity]; var borderColor = this.inline.color.border[nSeverity]; image = this.inline.image[nSeverity]; html = avglsinlineflyover.build(riskCategory, riskName, bgColor, borderColor); } var imageElem = anchor.firstChild; imageElem.src = image; if (html && html.length > 0) { imageElem.setAttribute("title", ""); imageElem.attachEvent("onmouseover", function(e){avglsinlineflyover.popup(e, html, nSeverity)}); imageElem.attachEvent("onmouseout", function(e){avglsinlineflyover.hide(e)}); } } }; // add the image to the page searchshield.SearchEngine.prototype.add_inline_image = function (doc, anchor, nSeverity, aRisk, blShortUrl) { if (anchor == null || anchor.parentNode == null) return null; // get the proper insertion point for the image var insertNode = anchor.nextSibling; while ((insertNode != null) && (insertNode.tagName!= null) && (insertNode.tagName == "SPAN")) { insertNode= insertNode.nextSibling; } // see if we already have an image anchor if ((insertNode != null) && (insertNode.id != null) && (insertNode.id == "avg_ls_anch")) { return null; } var html = ''; var image = this.inline.clockImage; if (aRisk!= null && nSeverity!= null) { var riskCategory = aRisk[1]; var riskName = aRisk[2]; var bgColor = this.inline.color.background[nSeverity]; var borderColor = this.inline.color.border[nSeverity]; image = this.inline.image[nSeverity]; var blUrl; if (blShortUrl) { var aRiskName = riskName.split(':'); var sUrl = searchshield.checkUrl(aRiskName[1]); blUrl = {}; blUrl.riskNameLabel = aRiskName[0] + ': '; blUrl.riskCategory = riskCategory; blUrl.bgColor = bgColor; blUrl.borderColor = borderColor; blUrl.sUrl = sUrl; } else { html = avglsinlineflyover.build(riskCategory, riskName, bgColor, borderColor); } } doc = anchor.ownerDocument; var img = doc.createElement("img"); img.src = image; img.setAttribute("id","avg_ls_image"); img.style.width = "12px"; img.style.height = "12px"; img.style.border = "none"; img.style.padding = "0 3px"; img.style.margin = "0"; if ((html && html.length > 0) || (blUrl!= undefined)) { img.setAttribute("title", ""); img.attachEvent("onmouseover", function(e){avglsinlineflyover.popup(e, html, nSeverity, blUrl)}); img.attachEvent("onmouseout", function(e){avglsinlineflyover.hide(e)}); } // create the link element var newAnchor = doc.createElement("A"); newAnchor.setAttribute("id", "avg_ls_anch"); newAnchor.style.display = "inline-block"; newAnchor.style.background = "none repeat scroll 0 0 transparent"; newAnchor.appendChild(img); img = null; // insert the node as either a sibling or a child if (insertNode!= null) anchor.parentNode.insertBefore(newAnchor, insertNode); else anchor.parentNode.appendChild(newAnchor); return newAnchor; }; //////////////// SEARCH ENGINE //////////////// /////////////// GOOGLE SEARCH ENGINE /////////////// searchshield.GoogleSearchEngine = function(search) { searchshield.SearchEngine.call(this, search); this.onlyPrimaries = false; }; searchshield.GoogleSearchEngine.prototype = new searchshield.SearchEngine(); searchshield.GoogleSearchEngine.prototype.constructor = searchshield.GoogleSearchEngine; searchshield.GoogleSearchEngine.prototype.name = "google"; // the name by which the search engine is known (always lowercase) searchshield.GoogleSearchEngine.prototype.validSearch = function(href) { var uri; if (typeof(this.search) === 'undefined' || null === this.search) uri = searchshield.parseLink(href); else uri = this.search.uri; if(!uri ||!uri.host) return false; var hostMatch = false; var domain = uri.host; // re stitch the uri path and query elements to // use existing logic var path = uri.path + uri.delimiter + uri.query; // For Google the host must match: // .google.com OR // .google.com.XX OR // .google.co.XX OR // .google.XX where XX is a country code // one special case is www.googe.off.ai (Anguilla) // Where any subdomain can come before the top level domain if (/(\.(?:google|mozilla)\.(?:com|(?:co|off)\.[a-z]{2}|[a-z]{2}))/i.test(domain)) { //check the path if ((path.indexOf("search?") == 0) || (path.indexOf("sponsoredlinks?") == 0) || (path.indexOf("webhp?") == 0) || (path.indexOf("webhp#") == 0) || (path.indexOf("#q=") == 0) || (path.indexOf("#hl=") == 0) || (path.indexOf("#sclient=") == 0)) { return true; } } return false; }; searchshield.GoogleSearchEngine.prototype.includeLink = function(tag) { var href = ""; var outHref = false; var findStr = ""; // check for interstitials if (searchshield.DoesURLContain(tag.href, this.search.uri.host)) { findStr = this.search.uri.host + "/interstitial?"; if (tag.className == "l" && tag.href) { if (tag.href.indexOf(findStr)!= -1) { findStr = "?url="; var pos = tag.href.indexOf(findStr); if (pos!== -1) { pos += 5; outHref = tag.href.substring(pos); if (searchshield.FilterUrl(outHref, this.filter_urls)) return false; return outHref; } } } if (tag.className == "sla") { findStr = "/url?q="; urlPos = tag.href.indexOf(findStr); if (urlPos!= -1) { urlPos += 7; outHref = tag.href.substring(urlPos); return outHref; } } // if an ad id if ((tag.id.indexOf("pa") == 0) || (tag.id.indexOf("an") == 0) || (tag.className == "resultLink")) { var urlPos = -1; // ads now need unescaping href = unescape(tag.href); findStr= "/url?sa="; if (href.indexOf(findStr)!= -1) { // first kind, locate real url findStr= "&q=http"; urlPos = href.indexOf(findStr); if (urlPos!= -1) urlPos += 3; // puts it on the http } if (urlPos == -1) { findStr = "/pagead/iclk?sa="; if (href.indexOf(findStr)!= -1) { // second kind, locate real url findStr = "&adurl=http"; urlPos = href.indexOf(findStr); if (urlPos!= -1) urlPos += 7; // puts it on the http } } if (urlPos == -1) { if (href.indexOf("/aclk?sa=")!= -1) { // third kind urlPos = href.indexOf("&q=http"); if (urlPos!= -1) urlPos += 3; // puts it on the http else { urlPos = href.indexOf("&lp=http"); if (urlPos!= -1) urlPos += 4; else { findStr = "&adurl=http"; urlPos = href.indexOf(findStr); if (urlPos!= -1) urlPos += 7; // puts it on the http } } } } if (urlPos == -1) { if (href.indexOf("/url?cad=")!= -1) { // fourth kind urlPos = href.indexOf("&q=http"); if (urlPos!= -1) urlPos += 3; // puts it on the http } } if (urlPos!= -1) { outHref = href.substring(urlPos); // the destination url is in the href string of this redirector if (outHref.indexOf('xg4ken.com') > -1) { urlPos = (unescape(outHref)).indexOf('url[]=') + 6; var destUrl = (unescape(outHref)).substring(urlPos); if (searchshield.FilterUrl(destUrl, this.filter_urls)) { var destUrl = searchshield.getHrefFromCiteElement(tag); if (destUrl) return searchshield.checkUrl(searchshield.removeHtmlTags(destUrl)); return false; } return destUrl; } // filtered url but can get destination from href string if (outHref.indexOf('altfarm.mediaplex.com') > -1) { var tmpoh = unescape(outHref); var destUrl = tmpoh.substring(tmpoh.indexOf('DURL=')+5); if (destUrl!= null) { var destUrl = unescape(destUrl); return destUrl; } } // extract any fragment text, shouldn't be unescaped var pound = outHref.indexOf("#"); if (pound!= -1) { var fragment = outHref.substring(pound); outHref = outHref.substring(0, pound); outHref = unescape(outHref); outHref += fragment; if (searchshield.FilterUrl(outHref, this.filter_urls)) return false; return outHref; } outHref = unescape(outHref); if (outHref.indexOf("?") == -1) { var ampPos = outHref.indexOf("&"); if (ampPos!= -1) outHref = outHref.substring(0, ampPos); } if (searchshield.FilterUrl(outHref, this.filter_urls)) { var destUrl = searchshield.getHrefFromCiteElement(tag); if (destUrl) return searchshield.checkUrl(searchshield.removeHtmlTags(destUrl)); return false; } return outHref; } } // recommended link - use following to see one // http://www.google.cz/search?hl=cs&q=warey&btnG=Hledat&lr=lang_cs // elem parent class = r // href must contain - url? and q=http var parentNode = tag.parentNode; if (parentNode && (parentNode.className.toLowerCase() == "r")) { href = tag.href; if (href && (href.indexOf("/url?")!= -1)) { // locate the real url var urlPos = href.indexOf("q=http"); if (urlPos!= -1) { urlPos += 2; outHref = href.substring(urlPos); // include entire param up to '&' var ampPos = outHref.indexOf("&"); if (ampPos!= -1) outHref = outHref.substring(0, ampPos); return outHref; } } } } // no link to self else if (tag.className && (tag.className.charAt(0) == "l" || tag.className == "sla")) { // check for any images on the link if (0 === tag.getElementsByTagName("IMG").length) return tag.href; } // else nothing return false; }; /////////////// GOOGLE /////////////// /////////////// AVG GOOGLE SEARCH ENGINE /////////////// searchshield.AVGGoogleSearchEngine = function(search) { searchshield.SearchEngine.call(this, search); this.onlyPrimaries = false; }; searchshield.AVGGoogleSearchEngine.prototype = new searchshield.SearchEngine(); searchshield.AVGGoogleSearchEngine.prototype.constructor = searchshield.AVGGoogleSearchEngine; searchshield.AVGGoogleSearchEngine.prototype.name = "avggoogle"; // the name by which the search engine is known (always lowercase) searchshield.AVGGoogleSearchEngine.prototype.validSearch = function(href) { var uri; if (typeof(this.search) === 'undefined' || null === this.search) uri = searchshield.parseLink(href); else uri = this.search.uri; if(!uri ||!uri.host) return false; var domain = uri.host; // re stitch the uri path and query elements to // use existing logic var path = uri.path + uri.delimiter + uri.query; if (domain.indexOf("search.avg.com") > -1) { // ads link back to google return true; } return false; }; searchshield.AVGGoogleSearchEngine.prototype.includeLink = function(tag) { var outHref = false; var findStr = ""; // check for interstitials if (searchshield.DoesURLContain(tag.href, "google.com")) { // link back to self - DIV elem GrandParent class of res1 or res3 is Sponsored Link var parentNode = tag.parentNode; if (parentNode) { var grandParentNode = tag.parentNode.parentNode; if (grandParentNode) { if ((grandParentNode.tagName == "DIV") && ((grandParentNode.className.toLowerCase() == "res1") || (grandParentNode.className.toLowerCase() == "res3"))) { var urlPos = -1; // ads now need unescaping href = unescape(tag.href); if (urlPos == -1) { if (href.indexOf("/aclk?sa=")!= -1) { findStr = "&adurl=http"; urlPos = href.indexOf(findStr); if (urlPos!= -1) urlPos += 7; // puts it on the http } } if (urlPos!= -1) { outHref = href.substring(urlPos); // the destination url is in the href string of this redirector if (outHref.indexOf('xg4ken.com') > -1) { urlPos = (unescape(outHref)).indexOf('url[]=') + 6; var destUrl = (unescape(outHref)).substring(urlPos); if (searchshield.FilterUrl(destUrl, this.filter_urls)) { var destUrl = searchshield.getHrefFromCiteElement(tag); if (destUrl) return searchshield.checkUrl(searchshield.removeHtmlTags(destUrl)); return false; } return destUrl; } // filtered url but can get destination from href string if (outHref.indexOf('altfarm.mediaplex.com') > -1) { var tmpoh = unescape(outHref); var destUrl = tmpoh.substring(tmpoh.indexOf('DURL=')+5); if (destUrl!= null) { var destUrl = unescape(destUrl); return destUrl; } } // extract any fragment text, shouldn't be unescaped var pound = outHref.indexOf("#"); if (pound!= -1) { var fragment = outHref.substring(pound); outHref = outHref.substring(0, pound); outHref = unescape(outHref); outHref += fragment; if (searchshield.FilterUrl(outHref, this.filter_urls)) return false; return outHref; } outHref = unescape(outHref); if (outHref.indexOf("?") == -1) { var ampPos = outHref.indexOf("&"); if (ampPos!= -1) outHref = outHref.substring(0, ampPos); } if (searchshield.FilterUrl(outHref, this.filter_urls)) { var destUrl = searchshield.getHrefFromCiteElement(tag); if (destUrl) return searchshield.checkUrl(searchshield.removeHtmlTags(destUrl)); return false; } return outHref; } } } } } // no link to self else { var parentNode = tag.parentNode; if (parentNode) { var grandParentNode = tag.parentNode.parentNode; if (grandParentNode) { if ((grandParentNode.tagName == "DIV") && (grandParentNode.className.toLowerCase() == "res2")) { // check for any images on the link if (0 === tag.getElementsByTagName("IMG").length) return tag.href; } } } } // else nothing return false; } /////////////// AVG GOOGLE /////////////// /////////////// YAHOO SEARCH ENGINE /////////////// searchshield.YahooSearchEngine = function(search) { searchshield.SearchEngine.call(this, search); this.showCleanVerdicts = false; }; searchshield.YahooSearchEngine.prototype = new searchshield.SearchEngine(); searchshield.YahooSearchEngine.prototype.constructor = searchshield.YahooSearchEngine; searchshield.YahooSearchEngine.prototype.name = "yahoo"; searchshield.YahooSearchEngine.prototype.validSearch = function(href) { var uri; if (typeof(this.search) === 'undefined' || null === this.search) uri = searchshield.parseLink(href); else uri = this.search.uri; if(!uri ||!uri.host) return false; var domain = uri.host; // re stitch the uri path and query elements to // use existing logic var path = uri.path + uri.delimiter + uri.query; // For Yahoo the host must match: // search.yahoo.com OR // xx.search.yahoo.com where xx is the country code OR // search.yahoo.co.jp OR // for Yahoo China: one.cn.yahoo.com, search.cn.yahoo.com or www.yahoo.cn if ((domain.match(/search\.yahoo\.co(?:m|\.jp)/i) || domain.match(/(?:search|one)\.cn\.yahoo\.com/i) || domain.match(/www\.yahoo\.cn/i)) && path.match(/^(?:search[;?]|s\?)/i)) { return true; } return false; }; searchshield.YahooSearchEngine.prototype.includeLink = function(tag) { var href = ""; var outHref = ""; var findStr = ""; // yahoo likes to encode the url href = unescape(tag.href); if ((tag.className.indexOf("yschttl")!= -1) || (tag.className.indexOf("spt")!= -1)) { var da = href.indexOf("**"); var ad = href.indexOf("*-"); if (da!= -1) outHref = href.substring(da+2); else if (ad!= -1) outHref = href.substring(ad+2); else outHref = href; if (outHref.toLowerCase().indexOf("overture.")!== -1) return false; } else if ((tag.tagName) && (tag.tagName === "A") && (!tag.className)) { var tagParent = tag.parentNode; // if anchor without className then search parentNodes if ((tagParent) && (tagParent.tagName!== "EM") && (searchshield.getParentNodeByClassName("yst-web", tag, 4))) { // China Yahoo support outHref = href; } else if ((tagParent) && (tagParent.tagName === "H3") && (!!searchshield.getParentNodeById("WS2m",tag, 5))) { // Japan Yahoo support var da = href.indexOf("**"); if (da == -1) outHref = href; else outHref = href.substring(da+2); } else if ((tagParent) && (tagParent.className!== "c") && (tagParent.parentNode.id!== "fpn") && (!!searchshield.getParentNodeByClassName("ymc", tag, 7))) { // Korea Yahoo support - when not caught by yschttl var da = href.indexOf("**"); if (da!== -1) outHref = href.substring(da+2); } } else if (!this.onlyPrimaries) { findStr = "&yargs="; var yargs = href.indexOf(findStr); if (yargs!= -1) { outHref = href.substring(yargs+findStr.length); // check for prefix if (outHref.indexOf("://") == -1) outHref = "http://" + outHref; // if inside an , probably a paypal link, don't include if (tag.parentNode && (tag.parentNode.tagName == "I")) return false; } } // filter domains // split the url based on '/' var parts =!!outHref? outHref.split('/'): null; // Filter out domains that match any of the search engine's names if (!parts ||!parts[2]) return false; var domain = parts[2]; if ((domain.indexOf("rdrjp.yahoo.com")!= -1) || (domain.indexOf("rdrkrs.yahoo.com")!= -1) || (domain.indexOf("rdrtpe.yahoo.com")!= -1) || (domain.indexOf("rdrird.yahoo.com")!= -1) || (domain.indexOf("rdrhk2.yahoo.com")!= -1) || (domain.indexOf("rdrsg1.yahoo.com")!= -1) || (domain.indexOf("rdrin2.yahoo.com")!= -1) || (domain.indexOf("rdre1.yahoo.com")!= -1) || (domain.indexOf("rdrw1.yahoo.com")!= -1) ) { return false; } // set for yahoo to get parent node for image insertion var hash = searchshield.avgCallFunc(this.doc, 'GetHash', outHref); tag.setAttribute("id", "xplid_" + hash); return outHref; }; /////////////// YAHOO SEARCH ENGINE /////////////// /////////////// AVG YAHOO SEARCH ENGINE /////////////// searchshield.AVGYahooSearchEngine = function(search) { searchshield.SearchEngine.call(this, search); this.showCleanVerdicts = false; this.omitAltImage = true; this.updateImageStyle = { verticalAlign: null }; }; searchshield.AVGYahooSearchEngine.prototype = new searchshield.SearchEngine(); searchshield.AVGYahooSearchEngine.prototype.constructor = searchshield.AVGYahooSearchEngine; searchshield.AVGYahooSearchEngine.prototype.name = "avgyahoo"; searchshield.AVGYahooSearchEngine.prototype.validSearch = function(href) { var uri; if (typeof(this.search) === 'undefined' || null === this.search) uri = searchshield.parseLink(href); else uri = this.search.uri; if(!uri ||!uri.host) return false; var domain= uri.host; //path may be 'avg/search' or 'search' var pathArray = uri.path.split("/"); var avg = pathArray[0]; // re stitch the uri path and query elements // to use existing logic var path = (undefined == pathArray[1])? pathArray[0]: pathArray[1]; path += uri.delimiter + uri.query; // For AVG Yahoo classic the host must match: // yhs.search.yahoo.com OR // .yhs.search.yahoo.com if (domain.indexOf("yhs.search.yahoo.co")!= -1) { if ((avg == "avg") && ((path.indexOf("search?") == 0) || (path.indexOf("search;") == 0))) { return true; } } // also support new metro version which DOESN'T // contain /avg so avg split part is path // valid domains are: // search.yahoo.com, // xx.search.yahoo.com and // search.yahoo.co.xx if (domain.indexOf("search.yahoo.co")!= -1) { // path (split avg) must start with search and // contain the avg toolbar parameter if (((path.indexOf("search?") == 0) || (path.indexOf("search;") == 0)) && (path.indexOf("fr=yhs-avg")!= -1)) { return true; } } return false; }; searchshield.AVGYahooSearchEngine.prototype.includeLink = function(tag) { var href = ""; var outHref = ""; var findStr = ""; if (this.search.doc.body.className.toLowerCase()!= "standard") { // handle as std Yahoo results page return searchshield.YahooSearchEngine.prototype.includeLink(tag); } // yahoo likes to encode the url href = unescape(tag.href); if (tag.target == "_top") { var da = href.indexOf("**"); if (da!= -1) outHref = href.substring(da+2); else outHref = href; if (outHref.toLowerCase().indexOf("overture.")!== -1) return false; } else if (!this.onlyPrimaries) { findStr = "&yargs="; var yargs = href.indexOf(findStr); if (yargs!= -1) { outHref = href.substring(yargs+findStr.length); // check for prefix if (outHref.indexOf("://") == -1) outHref = "http://" + outHref; // if inside an , probably a paypal link, don't include if (tag.parentNode && (tag.parentNode.tagName == "I")) return false; } } // filter domains // split the url based on '/' var parts = outHref.split('/'); // Filter out domains that match any of the search engine's names if (!parts[2]) return false; var domain = parts[2]; if ((domain.indexOf("rdrjp.yahoo.com")!= -1) || (domain.indexOf("rdrkrs.yahoo.com")!= -1) || (domain.indexOf("rdrtpe.yahoo.com")!= -1) || (domain.indexOf("rdrird.yahoo.com")!= -1) || (domain.indexOf("rdrhk2.yahoo.com")!= -1) || (domain.indexOf("rdrsg1.yahoo.com")!= -1) || (domain.indexOf("rdrin2.yahoo.com")!= -1) || (domain.indexOf("rdre1.yahoo.com")!= -1) || (domain.indexOf("rdrw1.yahoo.com")!= -1) ) { return false; } return outHref; }; /////////////// AVG YAHOO SEARCH ENGINE /////////////// /////////////// MSN SEARCH ENGINE /////////////// searchshield.MSNSearchEngine = function(search) { searchshield.SearchEngine.call(this, search); this.onlyPrimaries = false; }; searchshield.MSNSearchEngine.prototype = new searchshield.SearchEngine(); searchshield.MSNSearchEngine.prototype.constructor = searchshield.MSNSearchEngine; searchshield.MSNSearchEngine.prototype.name = "msn"; searchshield.MSNSearchEngine.prototype.validSearch = function(href) { var uri; if (typeof(this.search) === 'undefined' || null === this.search) uri = searchshield.parseLink(href); else uri = this.search.uri; if(!uri ||!uri.host) return false; var hostMatch = false; var domain = uri.host; // re stitch the uri path and query elements to // use existing logic var path = uri.path + uri.delimiter + uri.query; // For MSN the host must match: // search.msn.com OR // search.live.com if (domain.indexOf("search.msn.co") > -1) { if (domain.charAt(13) == 'm') hostMatch = true; else if ((domain.charAt(13) == '.') &&