feat: vlmcs check interface

web/vlmcs.php

@@ -0,0 +1,57 @@
+<?php
+
+enum VlmcsResult {
+    case OK; // target server works fine
+    case NOT_KMS; // target not a kms server
+    case UNREACHED; // target not reachable
+    case ERROR; // something error
+}
+
+/**
+ * Run a program and capture its stdout.
+ *
+ * @throws Exception
+ */
+function runProcess(array $command): string {
+    $desc = array(
+        0 => ['pipe', 'r'], // stdin
+        1 => ['pipe', 'w'], // stdout
+        2 => ['pipe', 'w'], // stderr
+    );
+    $process = proc_open($command, $desc, $pipes, null, array()); // start process
+    if (!is_resource($process)) {
+        throw new Exception('process running failed');
+    }
+    while(proc_get_status($process)['running']) { // wait process exit
+        usleep(50); // delay 50ms
+    }
+    return stream_get_contents($pipes[1]); // fetch stdout
+}
+
+function vlmcsCheck(string $host, int $port): VlmcsResult {
+    $host = str_contains($host, ':') ? "[$host]" : $host; // ipv6 host add bracket
+    try {
+        $content = runProcess(['vlmcs', $host . ':' . $port]);
+    } catch (Exception) {
+        return VlmcsResult::ERROR;
+    }
+
+    preg_match_all('/Sending activation request \(KMS V6\)/', $content, $match);
+    if (count($match[0]) != 0) {
+        return VlmcsResult::OK; // kms server works fine
+    }
+    preg_match_all('/Connecting to .* successful/', $content, $match);
+    if (count($match[0]) != 0) {
+        return VlmcsResult::NOT_KMS; // server connected but not working
+    } else {
+        return VlmcsResult::UNREACHED; // kms server connect failed
+    }
+}
+
+//$t = vlmcsCheck('1.1.1.1', 1688);
+//$t = vlmcsCheck('kms.343.re', 1688);
+$t = vlmcsCheck('8.210.148.24', 1688);
+$t = vlmcsCheck('8.210.148.24', 1689);
+//$t = vlmcsCheck('0.0.0.0.', 1688);
+//$t = vlmcsCheck('baidu.com', 1688);
+var_dump($t);