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list of special blocks is now dynamic via ajax

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MEUNIER Thibaud
2019-03-03 17:59:01 +01:00
parent 61930c1277
commit a4f572f962
6 changed files with 248 additions and 402 deletions
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2
articles/20170425/header.html
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@@ -1,7 +1,7 @@
<div class="container-fluid bg-grey">
<div class="row">
<div class="col-sm-4">
<br><img id="logo_ARTICLE" src="images/block_image.php?methode=spline" width="100%; height: auto"></img>
<br><img id="logo_ARTICLE" src="images/block_image.php?methode=spline_2" width="100%; height: auto"></img>
<br><p>ARTICLE</p>
</div>
<div class="col-sm-8">

25
data/getKnownBlocksList.php Normal file
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@@ -0,0 +1,25 @@
<?php
// ---
// --- La config globale
// ---
chdir('/opt/TOPISTO/apps');
require_once '/opt/TOPISTO/apps/global/inc/config.php';
// ---
// --- External dependances
// ---
require TOPISTO_PATH.'/ressources/vendor/autoload.php';
// ---
// --- Internal dependances
// ---
require_once APP_PATH.'/blockchain/inc/block.php';
header('Content-Type: application/json');
echo blockchain::getSpecialBlocksJSON();
die();
?>

4
explorer.php
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@@ -53,7 +53,7 @@
var pos = $(this).offset().top;
var winTop = $(window).scrollTop();
if (pos < winTop + 600) {
ajouterPreviousBlock();
blockchainExplorer.ajouterPreviousBlock();
$(this).addClass("slide");
}
});
@@ -64,7 +64,7 @@
{
cur_height = [];
cur_methode=la_methode;
return initBlockExplorer(null);
return blockchainExplorer.init();
}
</script>

106
images/20170200-content.html
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@@ -1,106 +0,0 @@
<div class="container-fluid bg-grey">
<div class="row">
<div class="col-sm-8">
<h2>A digital currency</h2>
<p>
Use cryptography.<br>
No "central bank".<br>
P2P network.<br>
</p>
</div>
<div class="col-sm-4 align-middle">
<img src="images/bitcoin.jpg" width="100%; height: auto"></img>
</div>
</div>
</div>
<div class="container-fluid">
<div class="row">
<div class="col-sm-4 align-middle">
<img src="images/wallet.png" height="300px"></img>
</div>
<div class="col-sm-8">
<h2>WALLET</h2>
<p>
Use cryptography.<br>
No "central bank".<br>
P2P network.<br>
</p>
</div>
</div>
</div>
<div class="container-fluid bg-grey">
<div class="row">
<div class="col-sm-8">
<h2>Transaction</h2>
<p>
When Bob is sending 42 <span class="glyphicon glyphicon-bitcoin"></span> to Alice, the bitcoin protocol is creating a transaction.<br>
A transaction is the balance between his Inputs and his Outputs.
<ul>
<li>First the network needs to be sure that Bob has got enough <span class="glyphicon glyphicon-bitcoin"></span> in his wallet.<br>So Bob will include a list of transactions that he has received before.<br>This is the inputs of the transactions.<br>For example, previous transaction's amount are 10, 25 and another 10, so total inputs are 45 <span class="glyphicon glyphicon-bitcoin"></span></li>
<li>As the input's sum is superior to the amount of the transaction, an ouput is added.<br>This output is the change to Bob.<br>In the example, this 3 <span class="glyphicon glyphicon-bitcoin"></span></li>
<li>Fees are took by the network to process the transaction.<br>Let say it will take 0.5<span class="glyphicon glyphicon-bitcoin"></span>.<br>This is another ouput</li>
<li>So Alice will get only a part of the transaction's amount.<br>this the last output, 41.5<span class="glyphicon glyphicon-bitcoin"></span></li>
</ul>
So the transaction is a made with :
<ul>
<li>Inputs : a list of previous transactions that bob has received</li>
<li>Outputs : a list of amounts to send to Alice, Bob, and fees</li>
<li>A timestamp</li>
</ul>
Then the wallet will broadcast the transaction on the network.<br>
It will be sent to the area called "mempool".<br>
Nodes of the network will validate the transaction by verfying the Inputs and the Ouputs.<br>
A hash of the transaction is computed.<br>
So the transaction is sealed.
</p>
</div>
<div class="col-sm-4 align-middle">
<img src="images/bob_to_alice.gif" width="100%; height: auto"></img>
</div>
</div>
</div>
<div class="container-fluid">
<div class="row">
<div class="col-sm-4">
<img src="images/tx2block.gif" width="100%; height: auto"></img>
</div>
<div class="col-sm-8">
<h2>Block</h2>
<p>
Then the bitcoin protocol is grouping validated transactions in blocks.<br>
So a block is an array of transactions.<br>
A block is made with :
<ul>
<li>An array of transactions.<br>
That's what my script is drawing.<br>
Running the transactions array, it is computing the sum of each outputs of each transaction.<br>
Then, it draws a rectangle for each sum.<br>
</li>
<li>A "proof of work".<br>The miner is computing a special hash that depends on the array of transaction and that will answer to a constraint.<br>This hash is very difficult to compute. In fact it is not really computed, the miner must test every value until he find the solution.<br></li>
<li>That why the network will give him a reward.<br>This is a special transaction that has no inputs.</li>
</ul>
</p>
</div>
</div>
</div>
<div class="container-fluid bg-grey">
<div class="row">
<div class="col-sm-8">
<h2>Blockchain</h2>
<p>
Each block has a hash and a reference to the ihash of the previous block.<br>
So blocks are chained together.<br>
</p>
</div>
<div class="col-sm-4">
<img src="/images/loading.gif" width="100%; height: auto"></img>
</div>
</div>
</div>

6
images/block_image.php
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@@ -33,13 +33,13 @@ if (isset($_REQUEST['methode'])) $methode = $_REQUEST['methode'];
if (isset($_REQUEST['mode'])) $mode = intval($_REQUEST['mode']);
$img = null;
$str_mode = '';
if ($mode != 9999) $str_mode = '-'.$mode;
// ---
// --- Le cas général : on trouve le fichier image demandé
// ---
$imagefilename = DATA_PATH.'/'.$methode.'/'.$block_hash;
if ($mode != 9999) $imagefilename .= '-'.$mode;
$imagefilename .= '.png';
$imagefilename = DATA_PATH.'/'.$methode.'/'.$block_hash.$str_mode.'.png';
if (file_exists($imagefilename)) $img = imagecreatefrompng($imagefilename);
// ---

111
js/blockexplorer.js
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@@ -1,92 +1,13 @@
// Init array
var liste_blocks = [
{
name : 'WHALE201810',
hash : '0000000000000000000f9f2dadfb8f312572183272802cbfcc4ff95b4ee6777d',
height : 545911
},
{
name : 'BLOCK21E800',
hash : '00000000000000000021e800c1e8df51b22c1588e5a624bea17e9faa34b2dc4a',
height : 528249
},
{
name : 'HURRICANE_1',
hash : '0000000000000000000fe6d521a187a5523d5cef6f6c178923ff82ffe5a0f372',
height : 506734
},
{
name : 'SEGWIT',
hash : '000000000000000000cbeff0b533f8e1189cf09dfbebf57a8ebe349362811b80',
height : 481823
},
{
name : 'SEGWIT_LOCK',
hash : '0000000000000000012e6060980c6475a9a8e62a1bf44b76c5d51f707d54522c',
height : 479808
},
{
name : 'BCC',
hash : '00000000000000000019f112ec0a9982926f1258cdcc558dd7c3b7e5dc7fa148',
height : 478559
},
{
name : 'BIP_91_LOCK',
hash : '0000000000000000015411ca4b35f7b48ecab015b14de5627b647e262ba0ec40',
height : 477120
},
{
name : 'HALVING_2',
hash : '000000000000000002cce816c0ab2c5c269cb081896b7dcb34b8422d6b74ffa1',
height : 420000
},
{
name : 'WHALE201311',
hash : '0000000000000001bc7156dd1183c87859b326affa3a5cdd157e809537f0b284',
height : 270953
},
{
name : 'HALVING_1',
hash : '000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e',
height : 210000
},
{
name : 'PIZZA',
hash : '00000000006de085dadb3ec413ef074022fe781121b467e98960280dd246bb00',
height : 57035
},
{
name : 'TOPISTO',
hash : '000000000a73e64735a2b75c97ea674950a9018da1420d01328a918c9ff9852c',
height : 5637
},
{
name : 'LEET',
hash : '000000008bf44a528a09d203203a6a97c165cf53a92ecc27aed0b49b86a19564',
height : 1337
},
{
name : 'LUCIFER',
hash : '00000000fc5b3c76f27f810ee775e480ae7fd604fd196b2d8da4257fcd39f4f9',
height : 666
},
{
name : 'THE_ANSWER',
hash : '00000000314e90489514c787d615cea50003af2023796ccdd085b6bcc1fa28f5',
height : 42
},
{
name : 'GENESIS',
hash : '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f',
height : 0
}
];
blockchainExplorer = function(){
// Init array
var liste_blocks = null;
var flag_nav = true;
var classes = ['bg-grey-even','bg-grey-odd'];
var cur_class = 0;
var cur_height = [];
var cur_methode = 'hasard';
var isInitSelector = false;
function precisionRound(number) {
var precision = 4;
@@ -212,11 +133,9 @@
return true;
}
function gotoBlock(block_name)
{
$(document).scrollTop( $("#explorer").offset().top );
// Bloquer la navigation pendant le calcul
if (!flag_nav)
{
@@ -268,7 +187,7 @@
return true;
}
function ajouterPreviousBlock()
function _ajouterPreviousBlock()
{
// Bloquer la navigation pendant le calcul
if (!flag_nav) return false;
@@ -288,7 +207,6 @@
function initBlockchain(block_name)
{
$(document).scrollTop( $("#explorer").offset().top );
$('#blockchain').html('');
cur_height = [];
cur_class = 0;
@@ -315,26 +233,35 @@
initBlockchain($('#blockSelector').val());
$('#fast_forward_btn').attr('data-original-title', $('#blockSelector').val());
}
function initBlockSelector()
{
if (!isInitSelector)
{
// Init the selector
var select = $('#blockSelector');
if (typeof select.isInitSelector == 'undefined')
{
select.isInitSelector = true;
$.each(liste_blocks, function (key, bloc) {
select.append(new Option(bloc.name, bloc.name));
});
isInitSelector = true;
}
}
function initBlockExplorer(leblock)
function _init()
{
$.getJSON('data/getKnownBlocksList.php', function( data ) {
liste_blocks = data;
initBlockSelector();
if (cur_height.length == 0) initBlockchain('LAST');
return true;
});
}
return {init: _init, ajouterPreviousBlock: _ajouterPreviousBlock};
}();
$(document).ready(function(){
blockchainListener.addBlockHook(initBlockExplorer);
blockchainExplorer.init();
});