Ticket #463: 463_xss.patch

client/hostinfo_unix.cpp

@@ -149 +149 @@
 #define _SC_PAGESIZE _SC_PAGE_SIZE
 #endif
 
+#include <X11/extensions/scrnsaver.h> // TODO encaps in ifdefs
+
 // The following is intended to be true both on Linux
 // and Debian GNU/kFreeBSD (see trac #521)
 //
@@ -1628 +1630 @@
     }
     return last_irq < t;
 }
-#endif
 
+// Ask the X server for user idle time (using XScreenSaver API)
+// Returns true if the idle_treshold is smaller than the
+// idle time of the user (means: true = user is idle)
+bool xss_idle(long idle_treshold) {
+        static XScreenSaverInfo* xssInfo = XScreenSaverAllocInfo();
+        static Display* disp = XOpenDisplay(NULL);
+        long idle_time = 0;
+        
+        if(disp != NULL) {
+                XScreenSaverQueryInfo(disp, DefaultRootWindow(disp), xssInfo);
+                idle_time = xssInfo->idle / 1000; // xssInfo->idle is in ms
+        } else {
+                msg_printf(NULL, MSG_INFO, "Cannot find default display. DISPLAY set?");
+        }
+        //msg_printf(NULL, MSG_INFO, "tresh: %ld idle_time: %ld", idle_treshold, idle_time);
+        return idle_treshold < idle_time;
+}
+#endif // LINUX_LIKE_SYSTEM
+
 bool HOST_INFO::users_idle(bool check_all_logins, double idle_time_to_run) {
     time_t idle_time = time(0) - (long) (60 * idle_time_to_run);
 
@@ -1650 +1670 @@
     if (!interrupts_idle(idle_time)) {
         return false;
     }
+    
+    if (!xss_idle((long)(idle_time_to_run * 60))) {
+                return false;
+        }
 #else
     // We should find out which of the following are actually relevant
     // on which systems (if any)