2.4.1: Settings GPG, Localization, CLI DB migrate, minor improvements

Core/API/Traits/GpgKeyValidation.trait.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Core\API\Traits;
+
+use Core\Objects\DatabaseEntity\GpgKey;
+
+trait GpgKeyValidation {
+
+  function testKey(string $keyString, ?string $expectedType = "pub") {
+    $res = GpgKey::getKeyInfo($keyString);
+    if (!$res["success"]) {
+      return $this->createError($res["error"] ?? $res["msg"]);
+    }
+
+    $keyData = $res["data"];
+    $keyType = $keyData["type"];
+    $expires = $keyData["expires"];
+
+    if ($expectedType === "pub" && $keyType === "sec#") {
+      return $this->createError("ATTENTION! It seems like you've imported a PGP PRIVATE KEY instead of a public key. 
+            It is recommended to immediately revoke your private key and create a new key pair.");
+    } else if ($expectedType !== null && $keyType !== $expectedType) {
+      return $this->createError("Key has unexpected type: $keyType, expected: $expectedType");
+    } else if (isInPast($expires)) {
+      return $this->createError("It seems like the gpg key is already expired.");
+    } else {
+      return $keyData;
+    }
+  }
+
+  function formatKey(string $keyString): string {
+     return preg_replace("/(-{2,})\n([^\n])/", "$1\n\n$2", $keyString);
+  }
+}