2 files changed, 102 insertions, 21 deletions

diff --git a/lib/base.php b/lib/base.php
index 9a682a7e90f..0a0d66aaf25 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -346,27 +346,7 @@ class OC {
 		if (\OCP\Util::needUpgrade()) {
 			$systemConfig = \OC::$server->getSystemConfig();
 			if ($showTemplate && !$systemConfig->getValue('maintenance', false)) {
-				$version = OC_Util::getVersion();
-				$oldTheme = $systemConfig->getValue('theme');
-				$systemConfig->setValue('theme', '');
-				OC_Util::addScript('config'); // needed for web root
-				OC_Util::addScript('update');
-				$tmpl = new OC_Template('', 'update.admin', 'guest');
-				$tmpl->assign('version', OC_Util::getVersionString());
-
-				// get third party apps
-				$apps = OC_App::getEnabledApps();
-				$incompatibleApps = array();
-				foreach ($apps as $appId) {
-					$info = OC_App::getAppInfo($appId);
-					if(!OC_App::isAppCompatible($version, $info)) {
-						$incompatibleApps[] = $info;
-					}
-				}
-				$tmpl->assign('appList', $incompatibleApps);
-				$tmpl->assign('productName', 'ownCloud'); // for now
-				$tmpl->assign('oldTheme', $oldTheme);
-				$tmpl->printPage();
+				self::printUpgradePage();
 				exit();
 			} else {
 				return true;
@@ -375,6 +355,40 @@ class OC {
 		return false;
 	}
 
+	/**
+	 * Prints the upgrade page
+	 */
+	private static function printUpgradePage() {
+		$systemConfig = \OC::$server->getSystemConfig();
+		$oldTheme = $systemConfig->getValue('theme');
+		$systemConfig->setValue('theme', '');
+		\OCP\Util::addScript('config'); // needed for web root
+		\OCP\Util::addScript('update');
+
+		// check whether this is a core update or apps update
+		$installedVersion = $systemConfig->getValue('version', '0.0.0');
+		$currentVersion = implode('.', OC_Util::getVersion());
+
+		$appManager = \OC::$server->getAppManager();
+
+		$tmpl = new OC_Template('', 'update.admin', 'guest');
+		$tmpl->assign('version', OC_Util::getVersionString());
+
+		// if not a core upgrade, then it's apps upgrade
+		if (version_compare($currentVersion, $installedVersion, '=')) {
+			$tmpl->assign('appsToUpgrade', $appManager->getAppsNeedingUpgrade());
+			$tmpl->assign('isAppsOnlyUpgrade', true);
+		} else {
+			// get third party apps
+			$version = OC_Util::getVersion();
+			$tmpl->assign('appList', $appManager->getIncompatibleApps($version));
+			$tmpl->assign('isAppsOnlyUpgrade', false);
+		}
+		$tmpl->assign('productName', 'ownCloud'); // for now
+		$tmpl->assign('oldTheme', $oldTheme);
+		$tmpl->printPage();
+	}
+
 	public static function initTemplateEngine() {
 		// Add the stuff we need always
 		// following logic will import all vendor libraries that are
diff --git a/lib/private/app/appmanager.php b/lib/private/app/appmanager.php
index 7a61cd53c59..86674aa047c 100644
--- a/lib/private/app/appmanager.php
+++ b/lib/private/app/appmanager.php
@@ -209,4 +209,71 @@ class AppManager implements IAppManager {
 		$settingsMemCache = $this->memCacheFactory->create('settings');
 		$settingsMemCache->clear('listApps');
 	}
+
+	/**
+	 * Returns a list of apps that need upgrade
+	 *
+	 * @return array list of app info from apps that need an upgrade
+	 *
+	 * @internal
+	 */
+	public function getAppsNeedingUpgrade() {
+		$appsToUpgrade = [];
+		$apps = $this->getInstalledApps();
+		foreach ($apps as $appId) {
+			$appInfo = $this->getAppInfo($appId);
+			$appDbVersion = $this->appConfig->getValue($appId, 'installed_version');
+			if ($appDbVersion
+				&& isset($appInfo['version'])
+				&& version_compare($appInfo['version'], $appDbVersion, '>')
+			) {
+				$appsToUpgrade[] = $appInfo;
+			}
+		}
+
+		return $appsToUpgrade;
+	}
+
+	/**
+	 * Returns the app information from "appinfo/info.xml".
+	 *
+	 * If no version was present in "appinfo/info.xml", reads it
+	 * from the external "appinfo/version" file instead.
+	 *
+	 * @param string $appId app id
+	 *
+	 * @return array app iinfo
+	 *
+	 * @internal
+	 */
+	public function getAppInfo($appId) {
+		$appInfo = \OC_App::getAppInfo($appId);
+		if (!isset($appInfo['version'])) {
+			// read version from separate file
+			$appInfo['version'] = \OC_App::getAppVersion($appId);
+		}
+		return $appInfo;
+	}
+
+	/**
+	 * Returns a list of apps incompatible with the given version
+	 *
+	 * @param array $version version as array of version components
+	 *
+	 * @return array list of app info from incompatible apps
+	 *
+	 * @internal
+	 */
+	public function getIncompatibleApps($version) {
+		$apps = $this->getInstalledApps();
+		$incompatibleApps = array();
+		foreach ($apps as $appId) {
+			$info = $this->getAppInfo($appId);
+			if (!\OC_App::isAppCompatible($version, $info)) {
+				$incompatibleApps[] = $info;
+			}
+		}
+		return $incompatibleApps;
+	}
+
 }