From cb06bbca108ddc443f1d02c7c54858eb604fb950 Mon Sep 17 00:00:00 2001
From: Mark Unwin <marku@opmantek.com>
Date: Fri, 17 Jul 2020 11:41:58 +1000
Subject: [PATCH] Fix - Add timezone detection back into index.php to prevent
 errors when date.timezone not set in php.ini.

---
 www/open-audit/index.php | 77 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/www/open-audit/index.php b/www/open-audit/index.php
index 7be810262..a02dcf077 100644
--- a/www/open-audit/index.php
+++ b/www/open-audit/index.php
@@ -40,6 +40,83 @@
 $query_count = 0;
 ob_start();
 
+
+// Get the timezone from the system if not set in php.ini
+if ( ! ini_get('date.timezone') OR (string) ini_get('date.timezone') === 'Australia/Brisbane') {
+    // Australia/Brisbane is the default on our shipped Windows installer.
+    // Consider Australia/Brisbane equivalent to not being set
+    $timezone = '';
+    $default = 'UTC';
+
+    if ((string) php_uname('s') === 'Darwin') {
+        $command_string = '/bin/ls -l /etc/localtime|/usr/bin/cut -d"/" -f7,8';
+        // new for high sierra
+        $command_string = '/bin/ls -l /etc/localtime|/usr/bin/cut -d"/" -f8,9';
+        exec($command_string, $output, $return_var);
+        $timezone = @$output[0];
+        if ((string) $timezone === '') {
+            $timezone = $default;
+        }
+    }
+
+    if ((string) php_uname('s') === 'Linux') {
+        // On many systems (Mac, for instance) "/etc/localtime" is a symlink
+        // to the file with the timezone info
+        if (@is_link('/etc/localtime')) {
+            // If it is, that file's name is actually the "Olsen" format timezone
+            $temp_file = @readlink('/etc/localtime');
+            $temp_pos = strpos($temp_file, 'zoneinfo');
+            if ($temp_pos) {
+                // When it is, it's in the "/usr/share/zoneinfo/" folder
+                $timezone = substr($temp_file, $temp_pos + strlen('zoneinfo/'));
+            }
+        } else {
+            // On other systems, like Ubuntu, there's file with the Olsen time right inside it.
+            $timezone = @file_get_contents('/etc/timezone');
+            if ( ! strlen($timezone)) {
+                $timezone = $default;
+            }
+        }
+        if ((string) $timezone === '') {
+            $timezone = $default;
+        }
+    }
+
+    if ((string) php_uname('s') === 'Windows NT') {
+        $wbem_locator = new COM('WbemScripting.SWbemLocator');
+        $wbem_services = $wbem_locator->ConnectServer('.', 'root\\cimv2');
+        $zones = $wbem_services->ExecQuery('Select * from Win32_TimeZone');
+        foreach ($zones as $zone) {
+            $wmi_zone_offset = (int) $zone->Bias * 60;
+            $wmi_caption = strtok($zone->Caption, ' ');
+            $wmi_location = strtok('|');
+        }
+        // Attempt to match based on the offset and part of the WMI string in the Caption field
+        foreach (timezone_abbreviations_list() as $timezone_abbr) {
+            foreach ($timezone_abbr as $entry) {
+                if ((int) $entry['offset'] === (int) $wmi_zone_offset && strpos($entry['timezone_id'], $wmi_location) !== false) {
+                    $timezone = trim($entry['timezone_id']);
+                }
+            }
+        }
+        if ((string) $timezone === '') {
+            // No match on offset + string, try for simply offset
+            foreach (timezone_abbreviations_list() as $timezone_abbr) {
+                foreach ($timezone_abbr as $entry) {
+                    if ((int) $entry['offset'] === (int) $wmi_zone_offset) {
+                        $timezone = trim($entry['timezone_id']);
+                    }
+                }
+            }
+        }
+        if ((string) $timezone === '') {
+            // last resort
+            $timezone = $default;
+        }
+    }
+    date_default_timezone_set(trim($timezone));
+}
+
 /*
  *---------------------------------------------------------------
  * APPLICATION ENVIRONMENT