add methods to convert slot and token info from C-structure; refs #28

src/cryptoki.hxx

@@ -872,13 +872,20 @@ namespace cryptoki {
           return res;
       }
 
+      //! Read Slot Information
       SlotInfo slotinfo() {
         CRYPTOLOG("log");
-        SlotInfo info;
         CK_SLOT_INFO cInfo;
         //! calls @c C_GetSlotInfo
         if (!check(_library->C_GetSlotInfo(_slot, &cInfo),
-                   CRYPTOKI_FN_LOG("C_GetSlotInfo"))) return info;
+                   CRYPTOKI_FN_LOG("C_GetSlotInfo")))
+          return slotinfo(cInfo);
+      }
+
+      //! Convert C-Structure of Slot Information Into C++
+      SlotInfo slotinfo(const CK_SLOT_INFO& cInfo) {
+        CRYPTOLOG("log");
+        SlotInfo info;
         info.slotDescription = cInfo.slotDescription;
         info.manufacturerID = cInfo.manufacturerID;
         info.flags = cInfo.flags;
@@ -886,14 +893,20 @@ namespace cryptoki {
         info.firmwareVersion = cInfo.firmwareVersion;
         return info;
       }
-      
+
+      //! Read Token Information
       TokenInfo tokeninfo() {
         CRYPTOLOG("log");
-        TokenInfo info;
         //! calls @c C_GetTokenInfo
         CK_TOKEN_INFO cInfo;
         if (!check(_library->C_GetTokenInfo(_slot, &cInfo),
-                   CRYPTOKI_FN_LOG("C_GetTokenInfo"))) return info;
+                   CRYPTOKI_FN_LOG("C_GetTokenInfo")))
+          return tokeninfo(cInfo);
+      }
+
+      //! Convert C-Structure of Token Information Into C++
+      TokenInfo tokeninfo(const CK_TOKEN_INFO cInfo) {
+        TokenInfo info;
         info.label = cInfo.label;
         info.manufacturerID = cInfo.manufacturerID;
         info.model = cInfo.model;