card: Fix showing KDF object attribute.

* g10/call-agent.c (learn_status_cb): Parse the KDF DO.
* g10/card-util.c (current_card_status): Show it correctly.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>

g10/call-agent.c

@@ -740,7 +740,15 @@ learn_status_cb (void *opaque, const char *line)
     }
   else if (keywordlen == 3 && !memcmp (keyword, "KDF", 3))
     {
+      unsigned char *data = unescape_status_string (line);
+
+      if (data[2] != 0x03)
+        parm->kdf_do_enabled = 0;
+      else if (data[22] != 0x85)
         parm->kdf_do_enabled = 1;
+      else
+        parm->kdf_do_enabled = 2;
+      xfree (data);
     }
   else if (keywordlen == 5 && !memcmp (keyword, "UIF-", 4)
            && strchr("123", keyword[4]))

g10/call-agent.h

@@ -72,7 +72,7 @@ struct agent_card_info_s
     unsigned int bt:1;     /* Button for confirmation available.  */
   } extcap;
   unsigned int status_indicator;
-  int kdf_do_enabled;      /* True if card has a KDF object.  */
+  int kdf_do_enabled;      /* Non-zero if card has a KDF object, 0 if not.  */
   int uif[3];              /* True if User Interaction Flag is on.  */
 };
 

g10/card-util.c

@@ -521,7 +521,16 @@ current_card_status (ctrl_t ctrl, estream_t fp,
       es_fprintf (fp, "sigcount:%lu:::\n", info.sig_counter);
       if (info.extcap.kdf)
         {
-          es_fprintf (fp, "kdf:%s:\n", info.kdf_do_enabled ? "on" : "off");
+          const char *setup;
+
+          if (info.kdf_do_enabled == 0)
+            setup = "off";
+          else if (info.kdf_do_enabled == 1)
+            setup = "single";
+          else
+            setup = "on";
+
+          es_fprintf (fp, "kdf:%s:\n", setup);
         }
       if (info.extcap.bt)
         {
@@ -636,8 +645,16 @@ current_card_status (ctrl_t ctrl, estream_t fp,
       tty_fprintf (fp,    "Signature counter : %lu\n", info.sig_counter);
       if (info.extcap.kdf)
         {
-          tty_fprintf (fp, "KDF setting ......: %s\n",
+          const char *setup;
-                       info.kdf_do_enabled ? "on" : "off");
+
+          if (info.kdf_do_enabled == 0)
+            setup = "off";
+          else if (info.kdf_do_enabled == 1)
+            setup = "single";
+          else
+            setup = "on";
+
+          tty_fprintf (fp, "KDF setting ......: %s\n", setup);
         }
       if (info.extcap.bt)
         {