Web Explorer for Kevacoin Blockchain
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<?php
require_once('../config.php');
require_once('../library/icon.php');
require_once('../library/sqlite.php');
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$query = isset($_GET['q']) ? preg_replace('/[^\w\s]+/u', '', $_GET['q']) : '';
$ns = isset($_GET['ns']) ? preg_replace('/[^a-zA-Z0-9]+/', '', $_GET['ns']) : '';
$tx = isset($_GET['tx']) ? preg_replace('/[^a-zA-Z0-9]+/', '', $_GET['tx']) : '';
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$page = (int) isset($_GET['page']) ? $_GET['page'] : 0;
$rss = isset($_GET['rss']) ? true : false;
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if (isset($_SERVER['QUERY_STRING'])) {
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$q = explode('/', $_SERVER['QUERY_STRING']);
if (isset($q[1])) {
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if ($q[1] == 'rss') {
$rss = true;
} else if (strlen($q[1]) == 34) {
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$ns = preg_replace('/[^a-zA-Z0-9]+/', '', $q[1]);
} else if (strlen($q[1]) > 34) {
$tx = preg_replace('/[^a-zA-Z0-9]+/', '', $q[1]);
} else {
$page = (int) $q[1];
}
}
if (isset($q[2])) {
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if ($q[2] == 'rss') {
$rss = true;
} else if (strlen($q[2]) == 34) {
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$ns = preg_replace('/[^a-zA-Z0-9]+/', '', $q[2]);
} else {
$page = (int) $q[2];
}
}
}
if ($page > 0) {
$limit = PAGE_LIMIT * $page - PAGE_LIMIT;
} else {
$limit = PAGE_LIMIT * $page;
}
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$db = new SQLite(DB_NAME, DB_USERNAME, DB_PASSWORD);
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if ($ns) {
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$namespaceHash = $ns;
$namespaceValue = $db->getNamespaceValueByNS($ns);
} else if ($tx) {
$namespaceHash = $db->getNamespaceHashByTX($tx);
$namespaceValue = $db->getNamespaceValueByNS($namespaceHash);
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} else {
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$namespaceHash = false;
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$namespaceValue = false;
}
$trends = [];
if (TRENDS_ENABLED) {
foreach ($db->getTrends(time() - TRENDS_SECONDS_OFFSET) as $value) {
foreach ((array) explode(' ', strip_tags(html_entity_decode(nl2br(trim($value['key']))))) as $trend) {
if (strlen($trend) >= TRENDS_MIN_LENGHT) {
$trend = strtolower($trend);
if (isset($trends[$trend])) {
$trends[$trend]++;
} else {
$trends[$trend] = 1;
}
}
}
foreach ((array) explode(' ', strip_tags(html_entity_decode(nl2br(trim($value['value']))))) as $trend) {
if (strlen($trend) >= TRENDS_MIN_LENGHT) {
$trend = strtolower($trend);
if (isset($trends[$trend])) {
$trends[$trend]++;
} else {
$trends[$trend] = 1;
}
}
}
}
arsort($trends);
$trends = array_slice($trends, 0, TRENDS_LIMIT);
$trends = array_flip($trends);
}
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$data = [];
foreach ($db->getData($ns, $tx, $query, $limit, PAGE_LIMIT) as $value) {
$data[] = [
'namehash' => $value['namehash'],
'block' => $value['block'],
'txid' => $value['txid'],
'time' => date(($rss ? 'r' : 'd-m-Y H:i'), $value['time']),
'key' => $rss ? htmlentities(strip_tags(trim($value['key'])), ENT_XML1) : nl2br(trim($value['key'])),
'value' => $rss ? htmlentities(strip_tags(trim($value['value'])), ENT_XML1): nl2br(trim($value['value'])),
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];
}
$older = false;
$newer = false;
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if (!in_array($page, [0, 1])) {
if ($page == 2) {
$newer = ($ns ? $ns : '');
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} else {
$newer = ($ns ? $ns . '/' . ($page - 1) : ($page - 1));
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}
if ($query) {
$newer = $newer . '?q=' . $query;
}
}
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if ($data) {
if (in_array($page, [0, 1])) {
$older = ($ns ? $ns . '/2' : '2');
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} else {
$older = ($ns ? $ns . '/' . ($page + 1) : ($page + 1));
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}
if ($query) {
$older = $older . '?q=' . $query;
}
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}
if ($ns) {
if ($page) {
$hrefThisPage = $ns . '/' . $page;
} else {
$hrefThisPage = $ns;
}
} else {
if ($page) {
$hrefThisPage = $page;
} else {
$hrefThisPage = '';
}
}
if ($rss) {
header('Content-type: application/xml');
require_once('rss.phtml');
} else {
require_once('index.phtml');
}