Add optional argument to now() for simple interval calculations on SQL-side

program/lib/Roundcube/rcube_db.php

@@ -711,11 +711,19 @@ class rcube_db
     /**
      * Return SQL function for current time and date
      *
+     * @param int $interval Optional interval (in seconds) to add/subtract
+     *
      * @return string SQL function to use in query
      */
-    public function now()
+    public function now($interval = 0)
     {
-        return "now()";
+        if ($interval) {
+            $add = ' ' . ($interval > 0 ? '+' : '-') . ' INTERVAL ';
+            $add .= $interval > 0 ? intval($interval) : intval($interval) * -1;
+            $add .= ' SECONDS';
+        }
+
+        return "now()" . $add;
     }
 
     /**

program/lib/Roundcube/rcube_db_mssql.php

@@ -48,19 +48,23 @@ class rcube_db_mssql extends rcube_db
     /**
      * Return SQL function for current time and date
      *
+     * @param int $interval Optional interval (in seconds) to add/subtract
+     *
      * @return string SQL function to use in query
      */
-    public function now()
+    public function now($interval = 0)
     {
+        if ($interval) {
+            $interval = intval($interval);
+            return "dateadd(second, $interval, getdate())";
+        }
+
         return "getdate()";
     }
 
     /**
      * Return SQL statement to convert a field value into a unix timestamp
      *
-     * This method is deprecated and should not be used anymore due to limitations
-     * of timestamp functions in Mysql (year 2038 problem)
-     *
      * @param string $field Field name
      *
      * @return string SQL statement to use in query

program/lib/Roundcube/rcube_db_pgsql.php

@@ -75,9 +75,6 @@ class rcube_db_pgsql extends rcube_db
     /**
      * Return SQL statement to convert a field value into a unix timestamp
      *
-     * This method is deprecated and should not be used anymore due to limitations
-     * of timestamp functions in Mysql (year 2038 problem)
-     *
      * @param string $field Field name
      *
      * @return string SQL statement to use in query
@@ -88,6 +85,24 @@ class rcube_db_pgsql extends rcube_db
         return "EXTRACT (EPOCH FROM $field)";
     }
 
+    /**
+     * Return SQL function for current time and date
+     *
+     * @param int $interval Optional interval (in seconds) to add/subtract
+     *
+     * @return string SQL function to use in query
+     */
+    public function now($interval = 0)
+    {
+        if ($interval) {
+            $add = ' ' . ($interval > 0 ? '+' : '-') . " interval '";
+            $add .= $interval > 0 ? intval($interval) : intval($interval) * -1;
+            $add .= " seconds'";
+        }
+
+        return "now()" . $add;
+    }
+
     /**
      * Return SQL statement for case insensitive LIKE
      *

program/lib/Roundcube/rcube_db_sqlite.php

@@ -94,11 +94,17 @@ class rcube_db_sqlite extends rcube_db
     /**
      * Return SQL function for current time and date
      *
+     * @param int $interval Optional interval (in seconds) to add/subtract
+     *
      * @return string SQL function to use in query
      */
-    public function now()
+    public function now($interval = 0)
     {
-        return "datetime('now')";
+        if ($interval) {
+            $add = ($interval > 0 ? '+' : '') . intval($interval) . ' seconds';
+        }
+
+        return "datetime('now'" . ($add ? ",'$add'" : "") . ")";
     }
 
     /**

program/lib/Roundcube/rcube_db_sqlsrv.php

@@ -48,10 +48,17 @@ class rcube_db_sqlsrv extends rcube_db
     /**
      * Return SQL function for current time and date
      *
+     * @param int $interval Optional interval (in seconds) to add/subtract
+     *
      * @return string SQL function to use in query
      */
-    public function now()
+    public function now($interval = 0)
     {
+        if ($interval) {
+            $interval = intval($interval);
+            return "dateadd(second, $interval, getdate())";
+        }
+
         return "getdate()";
     }