Add upgrader support to AJAX interface

include/ajax.upgrader.php

+<?php
+/*********************************************************************
+    ajax.upgrader.php
+
+    AJAX interface for Upgrader
+
+    Peter Rotich <peter@osticket.com>
+    Copyright (c)  2006-2012 osTicket
+    http://www.osticket.com
+
+    Released under the GNU General Public License WITHOUT ANY WARRANTY.
+    See LICENSE.TXT for details.
+
+    vim: expandtab sw=4 ts=4 sts=4:
+**********************************************************************/
+
+if(!defined('INCLUDE_DIR')) die('403');
+require_once INCLUDE_DIR.'class.upgrader.php';
+
+class UpgraderAjaxAPI extends AjaxController {
+
+    function upgrade() {
+        global $thisstaff, $ost;
+
+        if(!$thisstaff or !$thisstaff->isAdmin() or !$ost)
+            Http::response(403, 'Access Denied');
+
+        $upgrader = new Upgrader($ost->getDBSignature(), TABLE_PREFIX, PATCH_DIR);
+
+        //Just report the next action on the first call.
+        if(!$_SESSION['ost_upgrader'] || !$_SESSION['ost_upgrader'][$upgrader->getShash()]['progress']) {
+            $_SESSION['ost_upgrader'][$upgrader->getShash()]['progress'] = $upgrader->getNextAction();
+            Http::response(200, $upgrader->getNextAction());
+            exit;
+        }
+
+        if($upgrader->getNumPendingTasks()) {
+            if($upgrader->doTasks() && !$upgrader->getNumPendingTasks() && $ost->isUpgradePending()) {
+                //Just reporting done...with tasks - break in between patches!
+                header("HTTP/1.1 304 Not Modified");
+                exit;
+            }
+        } elseif($ost->isUpgradePending() && $upgrader->isUpgradable()) {
+            $version = $upgrader->getNextVersion();
+            if($upgrader->upgrade()) {
+                //We're simply reporting progress here - call back will report next action'
+                Http::response(200, "Upgraded to $version ... post-upgrade checks!");
+                exit;
+            }
+        } elseif(!$ost->isUpgradePending()) {
+            $upgrader->setState('done');
+            session_write_close();
+            header("HTTP/1.1 304 Not Modified");
+            exit;
+        }
+
+        if($upgrader->isAborted() || $upgrader->getErrors()) {
+            Http::response(416, "We have a problem ... wait a sec.");
+            exit;
+        }
+
+        Http::response(200, $upgrader->getNextAction());
+    }
+}
+?>

scp/ajax.php

@@ -66,7 +66,8 @@ $dispatcher = patterns('',
         url_post('^(?P<tid>\d+)/lock/(?P<id>\d+)/release', 'releaseLock'),
         url_get('^lookup', 'lookup'),
         url_get('^search', 'search')
-    ))
+    )),
+    url_post('^/upgrader', array('ajax.upgrader.php:UpgraderAjaxAPI', 'upgrade'))
 );
 
 # Call the respective function