/**
* Connects to Bitcoin daemon and retrieves information, then writes to cache
*
* @param string $from_cache Whether to get the data from cache or not
*
* @return array
*/
function getData($from_cache = false)
{
global $config;
global $cache_message;
// If we're getting data from cache, do it
if ($from_cache === true && is_file($config['cache_file'])) {
$cache = json_decode(file_get_contents($config['cache_file']), true);
// Only proceed if the array is a cache - invalid otherwise
if (is_array($cache)) {
if ($cache['config_hash'] == md5(json_encode($config))) {
if (time() < $cache['cache_expiry']) {
return $cache;
}
} else {
$cache_message = 'Configuration has changed, cache has been refreshed.';
}
}
}
// Include EasyBitcoin library and set up connection
include_once './php/easybitcoin.php';
$bitcoin = new Bitcoin($config['rpc_user'], $config['rpc_pass'], $config['rpc_host'], $config['rpc_port']);
// Setup SSL if configured
if ($config['rpc_ssl'] === true) {
$bitcoin->setSSL($config['rpc_ssl_ca']);
}
// Get info
$data = $bitcoin->getinfo();
// Handle errors if they happened
if (!$data) {
$return_data['error'] = $bitcoin->error;
$return_data['status'] = $bitcoin->status;
writeToCache($return_data);
return $return_data;
}
// Get free disk space
if ($config['display_free_disk_space'] === true) {
$data['free_disk_space'] = getFreeDiskSpace();
}
if (isset($config['display_ip']) && $config['display_ip'] === true) {
// Use bitcoind IP
if ($config['use_bitcoind_ip'] === true) {
$net_info = $bitcoin->getnetworkinfo();
$data['node_ip'] = $net_info['localaddresses'][0]['address'];
} else {
$data['node_ip'] = $_SERVER['SERVER_ADDR'];
}
}
// Add peer info
if ($config['display_peer_info'] === true) {
$data['peers'] = parsePeers($bitcoin->getpeerinfo());
}
// Node geolocation
if ($config['display_ip_location'] === true && $config['display_ip'] === true) {
$data['ip_location'] = getGeolocation($data['node_ip'], 'all');
}
// Bitcoin Daemon uptime
if ($config['display_bitcoind_uptime'] === true || strcmp(PHP_OS, "Linux") == 0) {
$data['bitcoind_uptime'] = getProcessUptime($config['bitcoind_process_name']);
}
// Get max height from bitnodes.21.co
if ($config['display_max_height'] === true) {
$bitnodes_ch = curl_init();
curl_setopt($bitnodes_ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($bitnodes_ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($bitnodes_ch, CURLOPT_USERAGENT, 'Bitcoin Node Status Page');
curl_setopt($bitnodes_ch, CURLOPT_URL, "https://bitnodes.21.co/api/v1/snapshots/");
$exec_result = json_decode(curl_exec($bitnodes_ch), true);
// Don't close handle if we reuse it
if ($config['display_bitnodes_info'] !== true) {
curl_close($bitnodes_ch);
}
$data['max_height'] = $exec_result['results'][0]['latest_height'];
$data['node_height_percent'] = round($data['blocks'] / $data['max_height'] * 100, 1);
}
// Get node info from bitnodes.21.co
if ($config['display_bitnodes_info'] === true) {
if ($bitnodes_ch === false) {
$bitnodes_ch = curl_init();
curl_setopt($bitnodes_ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($bitnodes_ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($bitnodes_ch, CURLOPT_USERAGENT, 'Bitcoin Node Status Page');
}
// Get node info
curl_setopt($bitnodes_ch, CURLOPT_URL, "https://getaddr.bitnodes.21.co/api/v1/nodes/" . $data['node_ip'] . "-8333/");
$data['bitnodes_info'] = json_decode(curl_exec($bitnodes_ch), true);
// Get latency info
curl_setopt($bitnodes_ch, CURLOPT_URL, "https://getaddr.bitnodes.21.co/api/v1/nodes/" . $data['node_ip'] . "-8333/latency/");
$latency = json_decode(curl_exec($bitnodes_ch), true);
$data['bitnodes_info']['latest_latency'] = $latency['daily_latency'][0];
}
// Get chart data
if ($config['display_chart'] === true & is_file($config['stats_file'])) {
$data['chart'] = json_decode(file_get_contents($config['stats_file']), true);
}
writeToCache($data);
return $data;
}