Adding auto-timeout patch

README.md

@@ -26,7 +26,7 @@ slock tool, how to install it and how it works.
 
 ### Changelog:
 
-2021-09-09 - Added the failure-command and secret-password patches
+2021-09-09 - Added the auto-timeout, failure-command and secret-password patches
 
 2021-06-08 - Added the color message patch
 
@@ -44,6 +44,9 @@ slock tool, how to install it and how it works.
       - enables transparency for slock
       - intended to be combined with a compositor that can blur the transparent background
 
+   - [auto-timeout](https://tools.suckless.org/slock/patches/auto-timeout/)
+      - allows for a command to be executed after a specified time of inactivity
+
    - [blur_pixelated_screen](https://tools.suckless.org/slock/patches/blur-pixelated-screen/)
       - sets the lockscreen picture to a blured or pixelated screenshot
 

config.def.h

@@ -56,6 +56,17 @@ static const float alpha = 0.9;
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
 
+#if AUTO_TIMEOUT_PATCH
+/* length of time (seconds) until */
+static const int timeoffset = 60;
+
+/* should [command] be run only once? */
+static const int runonce = 0;
+
+/* command to be run after [time] has passed */
+static const char *command = "doas poweroff";
+#endif // AUTO_TIMEOUT_PATCH
+
 #if FAILURE_COMMAND_PATCH
 /* number of failed password attempts until failcommand is executed.
    Set to 0 to disable */

patches.def.h

@@ -16,6 +16,11 @@
  */
 #define ALPHA_PATCH 0
 
+/* This patch allows for a command to be executed after a specified time of inactivity.
+ * https://tools.suckless.org/slock/patches/auto-timeout/
+ */
+#define AUTO_TIMEOUT_PATCH 0
+
 /* This patch sets the lockscreen picture to a blured or pixelated screenshot.
  * This patch depends on the Imlib2 library, uncomment the relevant line in
  * config.mk when enabling this patch.

slock.c

@@ -33,9 +33,9 @@
 #if MEDIAKEYS_PATCH
 #include <X11/XF86keysym.h>
 #endif // MEDIAKEYS_PATCH
-#if QUICKCANCEL_PATCH
+#if QUICKCANCEL_PATCH || AUTO_TIMEOUT_PATCH
 #include <time.h>
-#endif // QUICKCANCEL_PATCH
+#endif // QUICKCANCEL_PATCH / AUTO_TIMEOUT_PATCH
 #if DPMS_PATCH
 #include <X11/extensions/dpms.h>
 #endif // DPMS_PATCH
@@ -48,6 +48,10 @@ char *argv0;
 int failtrack = 0;
 #endif // FAILURE_COMMAND_PATCH
 
+#if AUTO_TIMEOUT_PATCH
+static time_t lasttouched;
+int runflag = 0;
+#endif // AUTO_TIMEOUT_PATCH
 #if QUICKCANCEL_PATCH
 static time_t locktime;
 #endif // QUICKCANCEL_PATCH
@@ -193,6 +197,9 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 	#endif // PAMAUTH_PATCH
 	int num, screen, running, failure, oldc;
 	unsigned int len, color;
+	#if AUTO_TIMEOUT_PATCH
+	time_t currenttime;
+	#endif // AUTO_TIMEOUT_PATCH
 	#if CAPSCOLOR_PATCH
 	int caps;
 	unsigned int indicators;
@@ -213,11 +220,23 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 		caps = indicators & 1;
 
 	#endif // CAPSCOLOR_PATCH
-	while (running && !XNextEvent(dpy, &ev)) {
+	#if AUTO_TIMEOUT_PATCH
+	while (running)
+	#else
+	while (running && !XNextEvent(dpy, &ev))
+	#endif // AUTO_TIMEOUT_PATCH
+	{
+		#if AUTO_TIMEOUT_PATCH
+		while (XPending(dpy)) {
+			XNextEvent(dpy, &ev);
+		#endif // AUTO_TIMEOUT_PATCH
 		#if QUICKCANCEL_PATCH
 		running = !((time(NULL) - locktime < timetocancel) && (ev.type == MotionNotify));
 		#endif // QUICKCANCEL_PATCH
 		if (ev.type == KeyPress) {
+			#if AUTO_TIMEOUT_PATCH
+			time(&lasttouched);
+			#endif // AUTO_TIMEOUT_PATCH
 			explicit_bzero(&buf, sizeof(buf));
 			num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
 			if (IsKeypadKey(ksym)) {
@@ -394,6 +413,20 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			for (screen = 0; screen < nscreens; screen++)
 				XRaiseWindow(dpy, locks[screen]->win);
 		}
+
+		#if AUTO_TIMEOUT_PATCH
+		}
+
+		time(&currenttime);
+
+		if (currenttime >= lasttouched + timeoffset) {
+			if (!runonce || !runflag) {
+				runflag = 1;
+				system(command);
+			}
+			lasttouched = currenttime;
+		}
+		#endif // AUTO_TIMEOUT_PATCH
 	}
 }
 
@@ -407,6 +440,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	XSetWindowAttributes wa;
 	Cursor invisible;
 
+	#if AUTO_TIMEOUT_PATCH
+	time(&lasttouched);
+	#endif // AUTO_TIMEOUT_PATCH
+
 	if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
 		return NULL;