initial import

3 files changed, 78 insertions, 0 deletions

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..6468d63
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,19 @@
+Copyright 2024 David Vazgenovich Shakaryan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..066d2ac
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,16 @@
+CFLAGS += -O2 -Wall -Wextra -Wpedantic
+LDFLAGS += -lX11
+
+TARGET := xlockkbd
+
+SRC := $(wildcard *.c)
+OBJ := $(SRC:.c=.o)
+
+all: $(TARGET)
+
+$(TARGET): $(OBJ)
+
+clean:
+	rm -f $(TARGET) $(OBJ)
+
+.PHONY: all clean
diff --git a/xlockkbd.c b/xlockkbd.c
new file mode 100644
index 0000000..fd9e659
--- /dev/null
+++ b/xlockkbd.c
@@ -0,0 +1,43 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+
+static void die(const char *s)
+{
+	fprintf(stderr, "xlockkbd: %s\n", s);
+	exit(1);
+}
+
+static bool grab_kbd(Display *d, int screen)
+{
+	return (XGrabKeyboard(d, RootWindow(d, screen), True, GrabModeAsync,
+			GrabModeAsync, CurrentTime)
+		== GrabSuccess);
+}
+
+static void wait_for_key(Display *d)
+{
+	XEvent ev;
+	while (!XNextEvent(d, &ev)) {
+		if (ev.type == KeyPress &&
+				XLookupKeysym(&ev.xkey, 0) == XK_Escape)
+			break;
+	}
+}
+
+int main()
+{
+	Display *d = XOpenDisplay(NULL);
+	if (!d)
+		die("cannot open display");
+
+	for (int i = 0; i < ScreenCount(d); ++i) {
+		if (!grab_kbd(d, i))
+			die("failed to grab keyboard");
+	}
+
+	wait_for_key(d);
+	return 0;
+}