web2web/index.html at master · makevoid/web2web · GitHub

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<!DOCTYPE html>
<html>
<head>
	<title>Web2Web Bootstrap</title>
	<meta charset="utf-8">
</head>


<body>
	<h1>Loading ...</h1>
	<p>This may take a minute or two.</p>


	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/webtorrent/0.96.4/webtorrent.min.js"></script>
	<script>
    var hex2Bin = function(hex) {
      var bytes = [],
          str

      for(var i=0; i < hex.length-1; i+=2) {
        bytes.push(parseInt(hex.substr(i, 2), 16))
      }

      return String.fromCharCode.apply(String, bytes)
    }

		var CONFIG = {
			btcAddress: '1DTZQVtnUm1dVmpDg8eWgXUqQe3hhYgDry',
			magnetBase: 'magnet:?dn=index.html&tr=udp%3A%2F%2Fexodus.desync.com%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.internetwarriors.net%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&tr=wss%3A%2F%2Ftracker.webtorrent.io&xt=urn:btih:'
		}


		$(document).ready(function() {
      // debug

			// find the latest transaction with OP_RETURN for given bitcoin address
			$.get('https://blockexplorer.com/api/txs/?address=' + CONFIG.btcAddress)
			.then(function(data) {
				var deferred = $.Deferred();

        // deferred.resolve("23bbffb6cb148f1aa54aa8a7eac381075f297ff3")

				for (var i = 0; i < data.txs.length; i++) {
					for (var j = 0; j < data.txs[i].vout.length; j++) {
						var scriptPubKey = data.txs[i].vout[j].scriptPubKey.asm

						if (scriptPubKey.indexOf('OP_RETURN') !== -1) {

							// get webpage torrent info hash
							var torrentHash = scriptPubKey.split(' ').slice(-1)[0]
              torrentHash = hex2Bin(torrentHash)
              // console.log(torrentHash)
							deferred.resolve(torrentHash)
						}
					}
				}

				return deferred.promise()
			})

			// download webpage HTML via torrents
			.then(function(torrentHash) {
				console.log('using hash', torrentHash)

				var magnet = CONFIG.magnetBase + torrentHash
				var client = new WebTorrent()

				client.add(magnet, function(torrent) {
					var file = torrent.files[0]

					// read new HTML into string
					var str = ''
					file
					.createReadStream({ start: 0, end: 1000 * 10 * 10 * 10 })
					.setEncoding('utf8')
					.on('data', function(chunk) {
						str += chunk
					})
					.on('end', function() {
						// overwrite current page with new HTML
						document.open()
						document.write(str)
						document.close()
					})
				})
			})
		})

	</script>

</body>
</html>