From 755b25329c1b89093e0dce5d86f6833ae11f54aa Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Mon, 5 Aug 2013 15:29:57 +0200
Subject: [PATCH] Fixed selection of minor versions for updating

It is no longer possible to select a lower minor version, if a higher version of the same major release is available. That means you cannot select 4.0.0 Beta 5, if 4.0.0 Beta 6 is available.
---
 .../lib/acp/page/PackageUpdatePage.class.php  |  2 +-
 .../package/PackageUpdateDispatcher.class.php | 30 ++++++++++++++++++-
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/wcfsetup/install/files/lib/acp/page/PackageUpdatePage.class.php b/wcfsetup/install/files/lib/acp/page/PackageUpdatePage.class.php
index 23cd7c79dd..a8e553b475 100644
--- a/wcfsetup/install/files/lib/acp/page/PackageUpdatePage.class.php
+++ b/wcfsetup/install/files/lib/acp/page/PackageUpdatePage.class.php
@@ -41,7 +41,7 @@ class PackageUpdatePage extends AbstractPage {
 	public function readData() {
 		parent::readData();
 		
-		$this->availableUpdates = PackageUpdateDispatcher::getInstance()->getAvailableUpdates();
+		$this->availableUpdates = PackageUpdateDispatcher::getInstance()->getAvailableUpdates(true, true);
 	}
 	
 	/**
diff --git a/wcfsetup/install/files/lib/system/package/PackageUpdateDispatcher.class.php b/wcfsetup/install/files/lib/system/package/PackageUpdateDispatcher.class.php
index 1af7d9cd05..82edd37cbd 100644
--- a/wcfsetup/install/files/lib/system/package/PackageUpdateDispatcher.class.php
+++ b/wcfsetup/install/files/lib/system/package/PackageUpdateDispatcher.class.php
@@ -521,9 +521,10 @@ class PackageUpdateDispatcher extends SingletonFactory {
 	 * Returns a list of available updates for installed packages.
 	 * 
 	 * @param	boolean		$removeRequirements
+	 * @param	boolean		$removeOlderMinorReleases
 	 * @return	array
 	 */
-	public function getAvailableUpdates($removeRequirements = true) {
+	public function getAvailableUpdates($removeRequirements = true, $removeOlderMinorReleases = false) {
 		$updates = array();
 		
 		// get update server data
@@ -605,6 +606,33 @@ class PackageUpdateDispatcher extends SingletonFactory {
 			}
 		}
 		
+		// remove older minor releases from list, e.g. only display 1.0.2, even if 1.0.1 is available
+		if ($removeOlderMinorReleases) {
+			foreach ($updates as &$updateData) {
+				$highestVersions = array();
+				foreach ($updateData['versions'] as $versionNumber => $dummy) {
+					if (preg_match('~^(\d+\.\d+)\.~', $versionNumber, $matches)) {
+						$major = $matches[1];
+						if (isset($highestVersions[$major])) {
+							if (version_compare($highestVersions[$major], $versionNumber, '<')) {
+								// version is newer, discard current version
+								unset($updateData['versions'][$highestVersions[$major]]);
+								$highestVersions[$major] = $versionNumber;
+							}
+							else {
+								// version is lower, discard
+								unset($updateData['versions'][$versionNumber]);
+							}
+						}
+						else {
+							$highestVersions[$major] = $versionNumber;
+						}
+					}
+				}
+			}
+			unset($updateData);
+		}
+		
 		return $updates;
 	}
 	
-- 
2.20.1