update rm deadcode

app/Support/SshHostKeyVerifier.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support;
+
+use phpseclib3\Net\SSH2;
+use RuntimeException;
+
+final class SshHostKeyVerifier
+{
+    /** @throws RuntimeException */
+    public static function verify(SSH2 $client, string $host): void
+    {
+        $knownHostsPath = config('vmware.ssh_known_hosts');
+        if (!$knownHostsPath) {
+            if (config('vmware.tls_verify', true)) {
+                throw new RuntimeException("SSH host key verification required for {$host}: set VCENTER_SSH_KNOWN_HOSTS or VCENTER_TLS_VERIFY=false");
+            }
+
+            return;
+        }
+
+        if (!is_readable($knownHostsPath)) {
+            throw new RuntimeException("SSH known_hosts file not readable: {$knownHostsPath}");
+        }
+
+        $serverKey = (string) $client->getServerPublicHostKey();
+        $serverKeyParts = preg_split('/\s+/', trim($serverKey));
+        $serverKeyValue = $serverKeyParts[1] ?? $serverKey;
+
+        $lines = file($knownHostsPath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) ?: [];
+        foreach ($lines as $line) {
+            $parts = preg_split('/\s+/', trim($line));
+            if (count($parts) < 3 || $parts[0] !== $host) {
+                continue;
+            }
+            if (hash_equals($parts[2], $serverKeyValue)) {
+                return;
+            }
+        }
+
+        throw new RuntimeException("SSH host key verification failed for {$host}: no matching known_hosts entry");
+    }
+}