Use cache file to show pfSense version information

2 files changed, 22 insertions, 4 deletions

diff --git a/src/etc/inc/globals.inc b/src/etc/inc/globals.inc
index b803953..f2fe7bf 100644
--- a/src/etc/inc/globals.inc
+++ b/src/etc/inc/globals.inc
@@ -172,6 +172,10 @@ if (file_exists("/etc/inc/globals_override.inc")) {
 /* Read all XML files in following dir and load menu entries */
 $g["ext_menu_path"] = "/usr/local/share/{$g['product_name']}/menu";
 
+/* Cache file used to store pfSense version */
+$g["version_cache_file"] = "{$g['varrun_path']}/{$g['product_name']}_version";
+$g['version_cache_refresh'] = 24 * 60 * 60; /* 24h */
+
 function platform_booting($on_console = false) {
 	global $g;
 
diff --git a/src/etc/inc/pkg-utils.inc b/src/etc/inc/pkg-utils.inc
index cb805eb..9130ed6 100644
--- a/src/etc/inc/pkg-utils.inc
+++ b/src/etc/inc/pkg-utils.inc
@@ -1170,14 +1170,28 @@ function get_base_pkg_name() {
 }
 
 /* Verify if system needs upgrade (meta package or base) */
-function get_system_pkg_version($baseonly = false) {
+function get_system_pkg_version($baseonly = false, $use_cache = true) {
 	global $g;
 
-	$output = exec("/usr/local/sbin/{$g['product_name']}-upgrade -c", $_gc,
-	    $rc);
+	$cache_file = $g['version_cache_file'];
+	$rc_file = $cache_file . '.rc';
+
+	$rc = "";
+	if ($use_cache && file_exists($rc_file) &&
+	    (time()-filemtime($rc_file) < $g['version_cache_refresh'])) {
+		$rc = chop(@file_get_contents($rc_file));
+	}
+
+	if ($rc == "2") {
+		$output = @file_get_contents($cache_file);
+	} else if ($rc != "0") {
+		$output = exec(
+		    "/usr/local/sbin/{$g['product_name']}-upgrade -c", $_gc,
+		    $rc);
+	}
 
 	/* pfSense-upgrade returns 2 when there is a new version */
-	if ($rc == 2) {
+	if ($rc == "2") {
 		$new_version = explode(' ', $output)[0];
 	}