From a17c001d6baf142413da6c31068a162ff87f92b3 Mon Sep 17 00:00:00 2001
From: Herman Semenoff <GermanAizek@yandex.ru>
Date: Tue, 17 Mar 2026 18:38:59 +0300
Subject: [PATCH] daemon: fix time() 32-bit overflow in 2038 year

Replaced the use of time_t with struct timeval and time() with gettimeofday() for time handling to prevent overflow in 2038.

References:
- https://en.wikipedia.org/wiki/Year_2038_problem
- https://www.gnu.org/software/gnulib/manual/html_node/Avoiding-the-year-2038-problem.html
---
 src/daemon/gpm.c             |  2 +-
 src/daemon/selection_copy.c  |  4 ++--
 src/daemon/selection_paste.c | 11 +++++++----
 src/headers/daemon.h         |  3 ++-
 4 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/daemon/gpm.c b/src/daemon/gpm.c
index 6806dce..90b8811 100644
--- a/src/daemon/gpm.c
+++ b/src/daemon/gpm.c
@@ -95,7 +95,7 @@ int fifofd=-1;
 int eventFlag=0;
 Gpm_Cinfo *cinfo[MAX_VC+1];
 
-time_t last_selection_time;
+struct timeval last_selection_time;
 time_t opt_age_limit = 0;
 
 
diff --git a/src/daemon/selection_copy.c b/src/daemon/selection_copy.c
index 124c613..205f686 100644
--- a/src/daemon/selection_copy.c
+++ b/src/daemon/selection_copy.c
@@ -21,7 +21,7 @@
 
 #include <fcntl.h>                  /* open              */
 #include <unistd.h>                 /* close             */
-#include <time.h>                   /* time              */
+#include <sys/time.h>               /* gettimeofday      */
 
 
 #include "headers/message.h"        /* messaging in gpm */
@@ -55,7 +55,7 @@ void selection_copy(int x1, int y1, int x2, int y2, int mode)
 
    if (mode < 3) {
       opt_aged = 0;
-      last_selection_time = time(0);
+      gettimeofday(&last_selection_time, NULL);
    }
 }
 
diff --git a/src/daemon/selection_paste.c b/src/daemon/selection_paste.c
index 6a9086e..3d31f8a 100644
--- a/src/daemon/selection_paste.c
+++ b/src/daemon/selection_paste.c
@@ -19,7 +19,7 @@
  *
  ********/
 
-#include <time.h>                   /* time              */
+#include <sys/time.h>               /* gettimeofday      */
 #include <fcntl.h>                  /* open              */
 #include <unistd.h>                 /* close             */
 
@@ -30,10 +30,13 @@ void selection_paste(void)
 {
    char c=3;
    int fd;
+   struct timeval now;
 
-   if (!opt_aged && (0 != opt_age_limit) &&
-      (last_selection_time + opt_age_limit < time(0))) {
-      opt_aged = 1;
+   if (!opt_aged && (0 != opt_age_limit)) {
+      gettimeofday(&now, NULL);
+      if (last_selection_time.tv_sec + opt_age_limit < now.tv_sec) {
+         opt_aged = 1;
+      }
    }
 
    if (opt_aged) {
diff --git a/src/headers/daemon.h b/src/headers/daemon.h
index 24a1a97..a8db214 100644
--- a/src/headers/daemon.h
+++ b/src/headers/daemon.h
@@ -26,6 +26,7 @@
  */
 #include "gpm.h"           /* Gpm_Event         */
 #include <sys/select.h>    /* fd_set            */
+#include <sys/time.h>      /* timeval           */
 
 /*************************************************************************
  * Types / structures
@@ -180,7 +181,7 @@ extern struct mouse_features  mouse_table[3],
 extern Gpm_Type         mice[];
 extern Gpm_Type         *repeated_type;
 
-extern time_t           last_selection_time;
+extern struct timeval   last_selection_time;