Added password status.

slock.c

@@ -486,7 +486,7 @@ static void
 render_screen(struct arena *arena,
               Display *dpy, struct lock **locks,
               FT_Face main_font_face, FT_Face secondary_font_face,
-              unsigned int pass_len)
+              unsigned int pass_len, int failure)
 {
     XWindowAttributes attrs;
     if(XGetWindowAttributes(dpy, locks[0]->win, &attrs)) {
@@ -532,7 +532,10 @@ render_screen(struct arena *arena,
 
             message_str_len = 32;
             message_str = (char *)arena_alloc(&temp_arena, message_str_len);
-            memset(message_str, 0, message_str_len);
+            if(failure)
+                memcpy(message_str, "wrong password", 15);
+            else
+                memcpy(message_str, "locked", 7);
             if(pass_len > 0) {
                 unsigned int i;
 
@@ -753,6 +756,7 @@ readpw(struct arena *arena,
                 case XK_Escape:
                     explicit_bzero(&passwd, sizeof(passwd));
                     len = 0;
+                    failure = 0;
                     break;
                 case XK_BackSpace:
                     if (len)
@@ -803,7 +807,7 @@ readpw(struct arena *arena,
         render_screen(arena,
                       dpy, locks,
                       fonts.main_face, fonts.secondary_face,
-                      len);
+                      len, failure);
 
         if(millis() - rendering_timeout_millis >= 500) {
             needs_rendering = 0;