gpg: Avoid multiple open calls to the keybox file.

* g10/keydb.h (KEYDB_HANDLE): Move typedef to ...
* g10/gpg.h: here.
(struct server_control_s): Add field 'cached_getkey_kdb'.
* g10/gpg.c (gpg_deinit_default_ctrl): Release that keydb handle.
* g10/getkey.c (getkey_end): Cache keydb handle.
(get_pubkey): Use cached keydb handle.
* kbx/keybox-search.c (keybox_search_reset): Use lseek instead of
closing the file.
--

Before this patch a "gpg --check-sigs" opened and closed the keybox
file for almost every signature check.  By caching the keydb handle
and using lseek(2) this can be limited to just 2 times.  This might
speed up things on Windows.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 7 insertions, 2 deletions

diff --git a/kbx/keybox-search.c b/kbx/keybox-search.c
index 56515d16a..0bd4e0182 100644
--- a/kbx/keybox-search.c
+++ b/kbx/keybox-search.c
@@ -746,8 +746,13 @@ keybox_search_reset (KEYBOX_HANDLE hd)
 
   if (hd->fp)
     {
-      fclose (hd->fp);
-      hd->fp = NULL;
+      if (fseeko (hd->fp, 0, SEEK_SET))
+        {
+          /* Ooops.  Seek did not work.  Close so that the search will
+           * open the file again.  */
+          fclose (hd->fp);
+          hd->fp = NULL;
+        }
     }
   hd->error = 0;
   hd->eof = 0;