qt: Start dirmngr with gpgconf to avoid multiple instances

* lang/qt/src/qgpgmewkdlookupjob.cpp (startDirmngr): Use "gpgconf
--launch dirmngr" to start dirmngr.
--

Using gpgconf to start dirmngr prevents multiple instances to be started
by the concurrently running keyserver lookup and WKD lookup.

GnuPG-bug-id: 6833

1 files changed, 7 insertions, 7 deletions

diff --git a/lang/qt/src/qgpgmewkdlookupjob.cpp b/lang/qt/src/qgpgmewkdlookupjob.cpp
index 266da0d5..e862f293 100644
--- a/lang/qt/src/qgpgmewkdlookupjob.cpp
+++ b/lang/qt/src/qgpgmewkdlookupjob.cpp
@@ -64,22 +64,22 @@ static GpgME::Error startDirmngr(Context *assuanCtx)
     if (err) {
         qCDebug(QGPGME_LOG) << "Error: Failed to get context for spawn engine (" << err.asString() << ")";
     }
-
-    const auto dirmngrProgram = GpgME::dirInfo("dirmngr-name");
+    const auto gpgconfProgram = GpgME::dirInfo("gpgconf-name");
     const auto homedir = GpgME::dirInfo("homedir");
     const char *argv[] = {
-        dirmngrProgram,
+        gpgconfProgram,
         "--homedir",
         homedir,
-        "--daemon",
+        "--launch",
+        "dirmngr",
         NULL
     };
     auto ignoreIO = Data{Data::null};
     if (!err) {
         qCDebug(QGPGME_LOG) << "Starting dirmngr ...";
-        err = spawnCtx->spawnAsync(dirmngrProgram, argv,
-                                   ignoreIO, ignoreIO, ignoreIO,
-                                   Context::SpawnDetached);
+        err = spawnCtx->spawn(gpgconfProgram, argv,
+                              ignoreIO, ignoreIO, ignoreIO,
+                              Context::SpawnDetached);
     }
 
     if (!err) {