dirmngr: Keep track of domains used for WKD queries

* dirmngr/domaininfo.c: New file.
* dirmngr/Makefile.am (dirmngr_SOURCES): Add file.
* dirmngr/server.c (cmd_wkd_get): Check whether the domain is already
known and tell domaininfo about the results.
--

This adds a registry for domain information to eventually avoid
useless queries for domains which do not support WKD.  The missing
part is a background task to check whether a queried domain supports
WKD at all and to expire old entries.

Signed-off-by: Werner Koch <[email protected]>
(cherry picked from commit 65038e6852185c20413d8f6602218ee636413b77)

1 files changed, 12 insertions, 0 deletions

diff --git a/dirmngr/dirmngr.h b/dirmngr/dirmngr.h
index 1f660de10..b08e4fea7 100644
--- a/dirmngr/dirmngr.h
+++ b/dirmngr/dirmngr.h
@@ -17,6 +17,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0+
  */
 
 #ifndef DIRMNGR_H
@@ -248,4 +250,14 @@ gpg_error_t gnupg_http_tls_verify_cb (void *opaque,
 gpg_error_t dirmngr_load_swdb (ctrl_t ctrl, int force);
 
 
+/*-- domaininfo.c --*/
+void domaininfo_print_stats (void);
+int  domaininfo_is_wkd_not_supported (const char *domain);
+void domaininfo_set_no_name (const char *domain);
+void domaininfo_set_wkd_supported (const char *domain);
+void domaininfo_set_wkd_not_supported (const char *domain);
+void domaininfo_set_wkd_not_found (const char *domain);
+
+
+
 #endif /*DIRMNGR_H*/