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README.md
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README.md
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# denon-vtuner
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Private proxy to access vtuner internet radio list
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My Denon receiver supports browsing the internet radio catalog of vtuner.com. Initially this service was accessible without extra costs, now the service costs five euros a year. But the website is still accessible without account.
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This repo contains a local node.js server that can load the html pages from the web site and return the categories and stations in the xml format that the Denon receiver understands.
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## My setup
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I have a Raspberry Pi that runs Pi-hole DNS. Hostname denon.vtuner.com is linked to the internal IP address of the RPi.
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The RPi runs nginx to host the denon.vtuner.com website:
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```
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server {
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listen 192.168.1.2:80;
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server_name denon.vtuner.com;
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index index.html;
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location / {
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header Host $host;
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proxy_pass http://127.0.0.1:3000;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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}
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}
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```
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On local port 3000, it runs the node.js server.
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const http = require("http");
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var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
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var { DOMParser} = require("xmldom");
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const serverurl = 'https://vtuner.com/setupapp/guide/asp/';
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const statics = [
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{prefix: "/setupapp/denon/asp/BrowseXML/loginXML.asp",response:"<EncryptedToken>123456789abcdef0</EncryptedToken>"},
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{prefix: "/setupapp/denon/asp/browsexm2/loginXML.asp",response:"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\" ?><ListOfItems><ItemCount>-1</ItemCount>"+
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"<Item><ItemType>Dir</ItemType><Title>Genre</Title>"+
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"<UrlDir>http://denon.vtuner.com/setupapp/BrowseStations/StartPage.asp?sBrowseType=Format</UrlDir></Item>"+
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"<Item><ItemType>Dir</ItemType><Title>Location</Title>"+
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"<UrlDir>http://denon.vtuner.com/setupapp/BrowseStations/StartPage.asp?sBrowseType=Location</UrlDir></Item>"+
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"<Item><ItemType>Dir</ItemType><Title>Language</Title>"+
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"<UrlDir>http://denon.vtuner.com/setupapp/BrowseStations/StartPage.asp?sBrowseType=Language</UrlDir></Item>"+
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"<Item><ItemType>Dir</ItemType><Title>Nederland</Title>"+
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"<UrlDir>http://denon.vtuner.com/setupapp/BrowseStations/BrowsePremiumStations.asp?sCategory=Netherlands&sBrowseType=Location</UrlDir></Item>"+
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"<Item><ItemType>Dir</ItemType><Title>Nederlands</Title>"+
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"<UrlDir>http://denon.vtuner.com/setupapp/BrowseStations/StartPage.asp?sCategory=dut&sBrowseType=Language&sNiceLang=Dutch</UrlDir></Item>i"+
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"</ListOfItems>"},
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{prefix: "/setupapp/BrowseStations/StartPage.asp", responsefunc:(url, res1) => { BrowseGenres(url, res1);}},
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{prefix: "/setupapp/BrowseStations/BrowsePremiumStations.asp", responsefunc:(url, res1) => { BrowseStations(url, res1);}},
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{prefix: "/setupapp/BrowseStations/dynampls.asp", responsefunc:(url, res1) => {GetStation(url, res1);}}
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];
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const server = http.createServer((req, res) => {
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let url = new URL("http://localhost"+req.url);
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console.log("received "+url.pathname + " and query "+url.search);
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var match = statics.filter((element) => {console.log(element); console.log(element.prefix); return (url.pathname.indexOf(element.prefix) === 0);} );
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console.log("match "+match);
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console.log("match "+match.length);
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if (match.length > 0) {
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console.log("match found");
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if (match[0].response !== undefined) {
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console.log("Const response");
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res.end(match[0].response);
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} else {
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console.log( "function response");
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match[0].responsefunc(url, res);
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}
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}
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});
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server.listen(3000, "localhost", () => {
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console.log("Listening for request");
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});
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function getWebpage(url, callback) {
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var webpage;
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let httpreq =new XMLHttpRequest();
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httpreq.open("GET", url, false);
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httpreq.responseType = "document";
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httpreq.send();
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return httpreq.responseText;
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}
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function fixHtmlErrors(text) {
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text = text.replace(/<HEAD/, '<head');
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text = text.replace(/<\/HEAD>/g, '</head>');
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text = text.replace(/<A /g, '<a ');
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text = text.replace(/<\/A>/g, '</a>');
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text = text.replace(/<TR /g, '<tr ');
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text = text.replace(/<\/TR>/g, '</tr>');
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text = text.replace(/<TD /g, '<td ');
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text = text.replace(/<\/TD>/g, '</td>');
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return text;
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}
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function getGenre(queryparams) {
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const vtunerurl=serverurl + "BrowseStations/StartPage.asp"+ queryparams;
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let response = getWebpage(vtunerurl);
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var result = [];
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response = fixHtmlErrors(response);
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const doc = new DOMParser().parseFromString(response,'text/html');
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const links = doc.getElementsByTagName('td');
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for (let i = 0; i < links.length; i++) {
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if (links[i].getAttribute('class') !== 'links') { continue; }
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const anchors = links[i].getElementsByTagName('a');
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for (let j=0; j<anchors.length; j++) {
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const link = anchors[j];
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result.push({link: link.getAttribute('href').replace(/\s/g, '+'), name:link.firstChild.data, type: 'Dir'});
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}
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}
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result = result.sort((a, b) => {
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const nameA = a.name.toUpperCase(); // ignore upper and lowercase
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const nameB = b.name.toUpperCase(); // ignore upper and lowercase
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if (nameA < nameB) {
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return -1;
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}
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if (nameA > nameB) {
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return 1;
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}
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// names must be equal
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return 0;
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});
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const pagelinks = doc.getElementsByTagName('a');
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for (let i=0; i< pagelinks.length; i++) {
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if (pagelinks[i].getAttribute('class') !== 'paging') { continue; }
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result.push({link: pagelinks.getAttribute('href'), name: "page "+link.firstChild.data, type: 'Dir'});
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}
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return result;
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}
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function getStationList(vtunerurl) {
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let response = getWebpage(vtunerurl);
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var result = [];
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response = fixHtmlErrors(response);
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const doc = new DOMParser().parseFromString(response,'text/html');
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const table = doc.getElementById('table2');
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if (table === undefined || table == null) {
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console.log("Cannot find table2 in page "+vtunerurl);
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console.log(response);
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exit;
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}
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console.log("isolated table");
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const links = table.getElementsByTagName('td');
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console.log("selected "+links.length+" table cells");
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for (let i = 0; i < links.length; i++) {
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if (links[i].getAttribute('class') !== 'links') {
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console.log('table cell #'+i+" is not class 'links', skipping");
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continue;
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}
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const anchors = links[i].childNodes;
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console.log("table cell #"+i+" of class links has "+anchors.length+" anchors inside");
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for (let j=0; j<anchors.length; j++) {
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var link = anchors[j];
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if (link.tagName != 'a')
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continue;
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var hrefAttr = link.getAttribute('Href');
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var name = link.firstChild.data;
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if (hrefAttr == undefined || hrefAttr == '' || name == undefined || name == '' )
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continue;
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console.log(hrefAttr);
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if (hrefAttr.indexOf('BrowsePremiumStations.asp') >= 0) {
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continue;
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}
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result.push({link: hrefAttr, name: name, type: 'Station'});
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console.log(result[result.length-1]);
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}
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}
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const pagelinks = doc.getElementsByTagName('a');
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for (let i=0; i< pagelinks.length; i++) {
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var link = pagelinks[i];
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if (link.getAttribute('class') !== 'paging') { continue; }
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console.log(link.attributes);
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result.push({link:link.getAttribute('HREF'), name: "page "+link.firstChild.firstChild.data, type: 'Dir'});
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}
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return result;
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}
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function getStationRedirect(vtunerurl) {
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let response = getWebpage(vtunerurl);
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response = fixHtmlErrors(response);
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const doc = new DOMParser().parseFromString(response,'text/html');
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const audioElements = doc.getElementsByTagName('audio');
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console.log("selected "+audioElements.length+" audio elements");
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for (let i = 0; i < audioElements.length; i++) {
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var srcAttr = link.getAttribute('src');
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if (srcAttr == undefined || srcAttr == '' )
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continue;
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console.log(srcAttr);
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return(srcAttr);
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}
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const scripts = doc.getElementsByTagName('script');
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console.log("selected "+scripts.length+" script elements");
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for (let i=0; i<scripts.length; i++) {
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console.log(scripts[i].firstChild);
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if (scripts[i].firstChild == null)
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{
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console.log ("no script found");
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continue;
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}
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var scr=scripts[i].firstChild.data;
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pos = scr.indexOf("mp3: ");
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console.log("found link at pos "+pos);
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var rest = scr.substr(pos+6);
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console.log("link: " + rest.substr(0,80));
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var urllen = rest.indexOf("\"");
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srcurl = rest.substr(0, urllen);
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console.log( "found url '" + srcurl+ "'");
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return (srcurl);
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}
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console.log ("Station at "+vtunerurl+" response "+response+" could not be parsed, returning error mp3");
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return 'http://sc2.1.fm:8030/';
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}
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function EntryToItem(i, listentry) {
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let response = "<Item>";
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if (listentry.link.substr(0, 3) == '../') {
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listentry.link = listentry.link.replace('../', 'http://denon.vtuner.com/setupapp/');
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}
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if (listentry.type == 'Dir') {
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response += '<ItemType>'+listentry.type + "</ItemType><Title>" + listentry.name+ "</Title>"+
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"<UrlDir>"+listentry.link+"</UrlDir></Item>";
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} else if (listentry.type == 'Station') {
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listentry.link = listentry.link.replace('../', serverurl);
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response += '<ItemType>Station</ItemType>'+
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"<StationId>" + i+ "</StationId>"+
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"<StationName>" + listentry.name+ "</StationName>"+
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"<StationUrl>"+listentry.link+"</StationUrl></Item>";
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}
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return response;
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}
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function BrowseGenres(url, res2) {
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let list = getGenre(url.search);
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const header = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\" ?><ListOfItems><ItemCount>-1</ItemCount>";
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var body = "";
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const footer = "</ListOfItems>";
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for (let i=0; i< list.length; i++) {
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var entry = EntryToItem(i, list[i]);
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console.log(entry);
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body += entry;
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}
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res2.end(header + body + footer);
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}
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function BrowseStations(url, res) {
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//example: /setupapp/BrowseStations/BrowsePremiumStations.asp and query ?sCategory=Alternative&sBrowseType=Format&sNiceLOFO=Alternative&fver=1.754333&dlang=dut&startitems=1&enditems=10
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if (url.pathname.indexOf('/setupapp/') != 0) {
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console.log ('unexpected base');
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};
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var pathname = url.pathname.replace('/setupapp/', '/');
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var search= url.search.replace(/&mac=[\w\d]*&/, '&');
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console.log('search '+url.search+' w/o mac: '+ search);
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let list = getStationList(serverurl + pathname + search);
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const header = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\" ?><ListOfItems><ItemCount>-1</ItemCount>";
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var body = "";
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const footer = "</ListOfItems>";
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for (let i=0; i< list.length; i++) {
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var entry = EntryToItem(i, list[i]);
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console.log(entry);
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body += entry;
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}
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res.end(header + body + footer);
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}
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function GetStation(url, res) {
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//example: /setupapp/BrowseStations/dynampls.asp?id=45518&k=c104fb13bec928a3e3cd0905e363be8097586d4657ba8ff55e852d0ddb815f7f
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if (url.pathname.indexOf('/setupapp/') != 0) {
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console.log ('unexpected base');
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};
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var pathname = url.pathname.replace('/setupapp/', '/');
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let redirect = getStationRedirect(serverurl + pathname + url.search);
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var pathname = url.pathname.replace('/setupapp/', '/');
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res.writeHead(302, { "location":redirect} );
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res.end();
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}
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