scd: Fix use case of PC/SC.

* scd/apdu.c (apdu_open_reader): Add an argument APP_EMPTY.
When CCID driver fails to open, try PC/SC if APP is nothing.
* scd/app.c (select_application): Supply arg if APP is nothing.

--

After scanning available card readers by CCID driver, scdaemon should
try PC/SC service if no APP is registered yet.  Also, when the slot
is allocated for PC/SC (ccid.handle==NULL), it should not call
ccid_compare_BAI, otherwise scdaemon crashes.

Debian-bug-id: 852702, 854005, 854595, 854616

Signed-off-by: NIIBE Yutaka <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/scd/app.c b/scd/app.c
index 5b8da1c38..7e728705a 100644
--- a/scd/app.c
+++ b/scd/app.c
@@ -343,7 +343,7 @@ select_application (ctrl_t ctrl, const char *name, app_t *r_app,
           int slot;
           int periodical_check_needed_this;
 
-          slot = apdu_open_reader (l);
+          slot = apdu_open_reader (l, !app_top);
           if (slot < 0)
             break;