Index: uspace/srv/hid/input/stroke.c
===================================================================
--- uspace/srv/hid/input/stroke.c	(revision efdfebc372ac1a93545f90450c8e1fe0aa789daf)
+++ uspace/srv/hid/input/stroke.c	(revision efdfebc372ac1a93545f90450c8e1fe0aa789daf)
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2011 Jiri Svoboda
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup input
+ * @{
+ */
+/**
+ * @file
+ * @brief Stroke simulator.
+ *
+ * When simulating a keyboard using a serial TTY we need to convert the
+ * recognized strokes (such as Shift-A) to sequences of key presses and
+ * releases (such as 'press Shift, press A, release A, release Shift').
+ *
+ */
+
+#include <io/console.h>
+#include <io/keycode.h>
+#include "stroke.h"
+#include "kbd.h"
+
+/** Correspondence between modifers and the modifier keycodes. */
+static unsigned int mods_keys[][2] = {
+	{ KM_LSHIFT, KC_LSHIFT },
+	{ 0, 0 }
+};
+
+/** Simulate keystroke using sequences of key presses and releases. */
+void stroke_sim(kbd_dev_t *kdev, unsigned mod, unsigned key)
+{
+	int i;
+
+	/* Simulate modifier presses. */
+	i = 0;
+	while (mods_keys[i][0] != 0) {
+		if (mod & mods_keys[i][0]) {
+			kbd_push_event(kdev, KEY_PRESS, mods_keys[i][1]);
+		}
+		++i;
+	}
+
+	/* Simulate key press and release. */
+	if (key != 0) {
+		kbd_push_event(kdev, KEY_PRESS, key);
+		kbd_push_event(kdev, KEY_RELEASE, key);
+	}
+
+	/* Simulate modifier releases. */
+	i = 0;
+	while (mods_keys[i][0] != 0) {
+		if (mod & mods_keys[i][0]) {
+			kbd_push_event(kdev, KEY_RELEASE, mods_keys[i][1]);
+		}
+		++i;
+	}
+}
+
+/**
+ * @}
+ */