sm: On Windows close the kbx files at several places.

* kbx/keybox-search.c (keybox_search_reset) [W32]: Always close.

* kbx/keybox-init.c (keybox_close_all_files): New.
* sm/keydb.c (keydb_close_all_files): New.
* sm/call-dirmngr.c (gpgsm_dirmngr_isvalid): Call new function.
(gpgsm_dirmngr_lookup): Ditto.
(gpgsm_dirmngr_run_command): Ditto.
--

We need to make sure that there are no open files on Windows.  Thus we
close them at several strategic locations.

GnuPG-bug-id: 4505

kbx/keybox-init.c

@@ -261,6 +261,26 @@ _keybox_close_file (KEYBOX_HANDLE hd)
 }
 
 
+/* Close all the files associated with the resource identified by TOKEN.  */
+void
+keybox_close_all_files (void *token)
+{
+  KB_NAME resource = token;
+  KEYBOX_HANDLE roverhd;
+  int idx;
+
+  if (!resource)
+    return;
+
+  for (idx=0; idx < resource->handle_table_size; idx++)
+    if ((roverhd = resource->handle_table[idx]) && roverhd->fp)
+      {
+        es_fclose (roverhd->fp);
+        roverhd->fp = NULL;
+      }
+}
+
+
 /*
  * Lock the keybox at handle HD, or unlock if YES is false.
  * Lock the keybox at handle HD, or unlock if YES is false.  TIMEOUT

kbx/keybox-search.c

@@ -814,6 +814,10 @@ keybox_search_reset (KEYBOX_HANDLE hd)
 
   if (hd->fp)
     {
+#if HAVE_W32_SYSTEM
+      es_fclose (hd->fp);
+      hd->fp = NULL;
+#else
       if (es_fseeko (hd->fp, 0, SEEK_SET))
         {
           /* Ooops.  Seek did not work.  Close so that the search will
@@ -821,6 +825,7 @@ keybox_search_reset (KEYBOX_HANDLE hd)
           es_fclose (hd->fp);
           hd->fp = NULL;
         }
+#endif
     }
   hd->error = 0;
   hd->eof = 0;

kbx/keybox.h

@@ -70,6 +70,8 @@ int keybox_is_writable (void *token);
 
 KEYBOX_HANDLE keybox_new_openpgp (void *token, int secret);
 KEYBOX_HANDLE keybox_new_x509 (void *token, int secret);
+void keybox_close_all_files (void *token);
+
 void keybox_release (KEYBOX_HANDLE hd);
 void keybox_push_found_state (KEYBOX_HANDLE hd);
 void keybox_pop_found_state (KEYBOX_HANDLE hd);

sm/call-dirmngr.c

@@ -505,6 +505,8 @@ gpgsm_dirmngr_isvalid (ctrl_t ctrl,
   struct inq_certificate_parm_s parm;
   struct isvalid_status_parm_s stparm;
 
+  keydb_close_all_files ();
+
   rc = start_dirmngr (ctrl);
   if (rc)
     return rc;
@@ -775,6 +777,8 @@ gpgsm_dirmngr_lookup (ctrl_t ctrl, strlist_t names, const char *uri,
   if ((names && uri) || (!names && !uri))
     return gpg_error (GPG_ERR_INV_ARG);
 
+  keydb_close_all_files ();
+
   /* The lookup function can be invoked from the callback of a lookup
      function, for example to walk the chain.  */
   if (!dirmngr_ctx_locked)
@@ -1043,6 +1047,8 @@ gpgsm_dirmngr_run_command (ctrl_t ctrl, const char *command,
   size_t len;
   struct run_command_parm_s parm;
 
+  keydb_close_all_files ();
+
   rc = start_dirmngr (ctrl);
   if (rc)
     return rc;

sm/keydb.c

@@ -375,6 +375,23 @@ keydb_add_resource (ctrl_t ctrl, const char *url, int force, int *auto_created)
 }
 
 
+/* This is a helper requyired under Windows to close all files so that
+ * a rename will work.  */
+void
+keydb_close_all_files (void)
+{
+#ifdef HAVE_W32_SYSTEM
+  int i;
+
+  log_assert (used_resources <= MAX_KEYDB_RESOURCES);
+  for (i=0; i < used_resources; i++)
+    if (all_resources[i].type == KEYDB_RESOURCE_TYPE_KEYBOX)
+      keybox_close_all_files (all_resources[i].token);
+#endif
+}
+
+
+
 KEYDB_HANDLE
 keydb_new (void)
 {
@@ -1080,6 +1097,7 @@ keydb_store_cert (ctrl_t ctrl, ksba_cert_t cert, int ephemeral, int *existed)
      records.  */
   keydb_set_ephemeral (kh, 1);
 
+  keydb_close_all_files ();
   rc = lock_all (kh);
   if (rc)
     return rc;
@@ -1165,6 +1183,7 @@ keydb_set_cert_flags (ctrl_t ctrl, ksba_cert_t cert, int ephemeral,
   if (ephemeral)
     keydb_set_ephemeral (kh, 1);
 
+  keydb_close_all_files ();
   err = keydb_lock (kh);
   if (err)
     {
@@ -1263,6 +1282,7 @@ keydb_clear_some_cert_flags (ctrl_t ctrl, strlist_t names)
         }
     }
 
+  keydb_close_all_files ();
   err = keydb_lock (hd);
   if (err)
     {
@@ -1295,7 +1315,7 @@ keydb_clear_some_cert_flags (ctrl_t ctrl, strlist_t names)
         }
     }
   if (rc && rc != -1)
-    log_error ("keydb_search failed: %s\n", gpg_strerror (rc));
+    log_error ("%s failed: %s\n", __func__, gpg_strerror (rc));
 
  leave:
   xfree (desc);

sm/keydb.h

@@ -33,6 +33,8 @@ typedef struct keydb_handle *KEYDB_HANDLE;
 /*-- keydb.c --*/
 gpg_error_t keydb_add_resource (ctrl_t ctrl, const char *url,
                                 int force, int *auto_created);
+void keydb_close_all_files (void);
+
 KEYDB_HANDLE keydb_new (void);
 void keydb_release (KEYDB_HANDLE hd);
 int keydb_set_ephemeral (KEYDB_HANDLE hd, int yes);