Preparation for timers
Currently directly using timing.c, plan to use callbacks later to loosen
coupling, but first just get things working.
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index de517d6..ca11162 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -76,6 +76,10 @@
#include "zlib.h"
#endif
+#if defined(POLARSSL_TIMING_C)
+#include "timing.h"
+#endif
+
#if defined(POLARSSL_HAVE_TIME)
#include <time.h>
#endif
@@ -815,6 +819,14 @@
ssl_transform *transform_negotiate; /*!< transform params in negotiation */
/*
+ * Timers (WIP)
+ */
+#if defined(POLARSSL_TIMING_C)
+ struct hr_time time_info;
+ unsigned long time_limit;
+#endif
+
+ /*
* Record layer (incoming data)
*/
unsigned char *in_buf; /*!< input buffer */
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 603d169..3f3d4ee 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -78,6 +78,37 @@
return( 0 );
}
+
+/*
+ * Timers (WIP)
+ */
+#if defined(POLARSSL_TIMING_C)
+/*
+ * Start a timer.
+ * Passing millisecs = 0 cancels a running timer.
+ * The timer is already running iff time_limit != 0.
+ */
+void ssl_set_timer( ssl_context *ssl, unsigned long millisecs )
+{
+ ssl->time_limit = millisecs;
+ get_timer( &ssl->time_info, 1 );
+}
+
+/*
+ * Return -1 is timer is expired, 0 if it isn't.
+ */
+int ssl_check_timer( ssl_context *ssl )
+{
+ if( ssl->time_limit != 0 &&
+ get_timer( &ssl->time_info, 0 ) > ssl->time_limit )
+ {
+ return( -1 );
+ }
+
+ return( 0 );
+}
+#endif
+
#if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
/*
* Convert max_fragment_length codes to length.
