Add helper for checking if X.509 directory servers are configured

GnuPG-bug-id: 5672

src/utils/gnupg.cpp

@@ -452,6 +452,13 @@ QString Kleo::keyserver()
     return result;
 }
 
+bool Kleo::haveX509DirectoryServerConfigured()
+{
+    return !getCryptoConfigUrlList("dirmngr", "ldapserver").empty()
+        || !getCryptoConfigUrlList("dirmngr", "LDAP Server").empty()
+        || !getCryptoConfigUrlList("gpgsm", "keyserver").empty();
+}
+
 bool Kleo::gpgComplianceP(const char *mode)
 {
     const auto conf = QGpgME::cryptoConfig();

src/utils/gnupg.h

@@ -65,6 +65,11 @@ KLEO_EXPORT bool haveKeyserverConfigured();
  */
 KLEO_EXPORT QString keyserver();
 
+/** Returns true, if GnuPG knows which server to use for directory service
+ *  operations for X.509 certificates.
+ */
+KLEO_EXPORT bool haveX509DirectoryServerConfigured();
+
 /* Use gnupgUsesDeVsCompliance() or gnupgIsDeVsCompliant() instead. */
 KLEO_DEPRECATED_EXPORT bool gpgComplianceP(const char *mode);