155 lines
3.9 KiB
PHP
155 lines
3.9 KiB
PHP
<?php
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$api="https://api.github.com/repos/#user#/#repo#/releases/latest";
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$download="https://github.com/#user#/#repo#/releases/download/#dlVersion#/#dlName#";
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$manifest="?dlName=#mName#&dlVersion=#mVersion#&user=#user#&repo=#repo#";
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$allowed=array(
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'user'=> array('wellenvogel'),
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'repo'=> array('esp32-nmea2000')
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);
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if (!function_exists('getallheaders')) {
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function getallheaders()
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{
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$headers = [];
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foreach ($_SERVER as $name => $value) {
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if (substr($name, 0, 5) == 'HTTP_') {
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$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
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}
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}
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return $headers;
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}
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}
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function safeName($name){
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return preg_replace('[^0-9_a-zA-Z.-]','',$name);
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}
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function replaceVars($str,$vars){
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foreach ($vars as $n => &$v){
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$str=str_replace("#".$n."#",$v,$str);
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}
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return $str;
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}
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function fillUserAndRepo($vars=null){
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global $allowed;
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if ($vars == null) {
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$vars=array();
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}
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foreach (array('user','repo') as $n){
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if (! isset($_REQUEST[$n])){
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die("missing parameter $n");
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}
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$v=$_REQUEST[$n];
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$av=$allowed[$n];
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if (! in_array($v,$av)){
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die("value $v for $n not allowed");
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}
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$vars[$n]=$v;
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}
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return $vars;
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}
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function addVars($vars,$names){
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foreach ($names as $n){
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if (! isset($_REQUEST[$n])){
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die("missing parameter $n");
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}
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$safe=safeName($_REQUEST[$n]);
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$vars[$n]=$safe;
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}
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return $vars;
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}
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function curl_exec_follow(/*resource*/ $ch, /*int*/ &$maxredirect = null) {
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$mr = $maxredirect === null ? 5 : intval($maxredirect);
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if (ini_get('open_basedir') == '' && ini_get('safe_mode' == 'Off') && false) {
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $mr > 0);
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curl_setopt($ch, CURLOPT_MAXREDIRS, $mr);
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} else {
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
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if ($mr > 0) {
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$newurl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
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$rch = curl_copy_handle($ch);
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curl_setopt($rch, CURLOPT_HEADER, true);
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curl_setopt($rch, CURLOPT_NOBODY, true);
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curl_setopt($rch, CURLOPT_FORBID_REUSE, false);
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curl_setopt($rch, CURLOPT_RETURNTRANSFER, true);
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do {
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curl_setopt($rch, CURLOPT_URL, $newurl);
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$header = curl_exec($rch);
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if (curl_errno($rch)) {
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$code = 0;
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} else {
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$code = curl_getinfo($rch, CURLINFO_HTTP_CODE);
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if ($code == 301 || $code == 302) {
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preg_match('/Location:(.*?)\n/', $header, $matches);
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$newurl = trim(array_pop($matches));
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} else {
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$code = 0;
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}
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}
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} while ($code && --$mr);
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curl_close($rch);
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if (!$mr) {
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if ($maxredirect === null) {
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trigger_error('Too many redirects. When following redirects, libcurl hit the maximum amount.', E_USER_WARNING);
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} else {
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$maxredirect = 0;
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}
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return false;
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}
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curl_setopt($ch, CURLOPT_URL, $newurl);
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}
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}
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curl_setopt(
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$ch,
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CURLOPT_HEADERFUNCTION,
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function ($curl, $header) {
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header($header);
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return strlen($header);
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}
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);
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curl_setopt(
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$ch,
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CURLOPT_WRITEFUNCTION,
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function ($curl, $body) {
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echo $body;
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return strlen($body);
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}
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);
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header('Access-Control-Allow-Origin:*');
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return curl_exec($ch);
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}
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function proxy($url)
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{
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$headers=getallheaders();
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$ch = curl_init($url);
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curl_setopt_array(
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$ch,
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[
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_CONNECTTIMEOUT => 30,
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]
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);
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$FWHDR = ['User-Agent'];
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$outHeaders = array();
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foreach ($FWHDR as $k) {
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if (isset($headers[$k])) {
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array_push($outHeaders, "$k: $headers[$k]");
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}
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}
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curl_setopt($ch, CURLOPT_HTTPHEADER, $outHeaders);
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$response = curl_exec_follow($ch);
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curl_close($ch);
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}
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if (isset($_REQUEST['api'])) {
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$vars=fillUserAndRepo();
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proxy(replaceVars($api,$vars));
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exit(0);
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}
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if (isset($_REQUEST['dlName'])){
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$vars=fillUserAndRepo();
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$vars=addVars($vars,array('dlName','dlVersion'));
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proxy(replaceVars($download,$vars));
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exit(0);
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}
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die("invalid request");
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?>
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