Fixed bug where libfko would segfault if fko_get_spa_data() was called before fko_spa_data_final() was called (and successful). Added include of time.h in fko.h.

git-svn-id: file:///home/mbr/svn/fwknop/trunk@306 510a4753-2344-4c79-9c09-4d669213fbeb

lib/fko.h

@@ -31,6 +31,8 @@
 #ifndef FKO_H
 #define FKO_H 1
 
+#include <time.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif

lib/fko_funcs.c

@@ -330,6 +330,11 @@ fko_get_spa_data(fko_ctx_t ctx, char **spa_data)
     if(!CTX_INITIALIZED(ctx))
         return(FKO_ERROR_CTX_NOT_INITIALIZED);
 
+    /* We expect to have encrypted data to process.  If not, we bail.
+    */
+    if(ctx->encrypted_msg == NULL || (strlen(ctx->encrypted_msg) < 1))
+        return(FKO_ERROR_MISSING_ENCODED_DATA);
+
     *spa_data = ctx->encrypted_msg; 
 
     /* Notice we omit the first 10 bytes if Rijndael encryption is