From 97318e602acaaef57e5cde3e992f6669ea491012 Mon Sep 17 00:00:00 2001
From: "kenneth.skovhede@gmail.com"
 <kenneth.skovhede@gmail.com@59da171f-624f-0410-aa54-27559c288bec>
Date: Sat, 23 Oct 2010 09:09:14 +0000
Subject: [PATCH] Update issue #163 Status: Fixed There is now an error message
 and a helpful rollback message displayed if the database version does not
 fit.

git-svn-id: https://duplicati.googlecode.com/svn/trunk@557 59da171f-624f-0410-aa54-27559c288bec
---
 Duplicati/GUI/DatabaseUpgrader.cs             |  5 +++++
 .../GUI/Strings/DatabaseUpgrader.Designer.cs  | 19 +++++++++++++++++--
 Duplicati/GUI/Strings/DatabaseUpgrader.resx   |  8 ++++++++
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/Duplicati/GUI/DatabaseUpgrader.cs b/Duplicati/GUI/DatabaseUpgrader.cs
index da58c0b08..878ca6880 100644
--- a/Duplicati/GUI/DatabaseUpgrader.cs
+++ b/Duplicati/GUI/DatabaseUpgrader.cs
@@ -109,6 +109,7 @@ namespace Duplicati.GUI
             //ea, from 1 to 8, by stepping 2->3->4->5->6->7->8
             SortedDictionary<int, string> upgrades = new SortedDictionary<int, string>();
             string prefix = typeof(DatabaseUpgrader).Namespace + "." + FOLDER_NAME + ".";
+            int maxversion = -1;
             foreach (string s in asm.GetManifestResourceNames())
             {
                 //The resource name will be "Duplicati.GUI.Database_schema.1.Sample upgrade.sql"
@@ -119,6 +120,7 @@ namespace Duplicati.GUI
                     {
                         string version = s.Substring(prefix.Length, s.IndexOf(".", prefix.Length + 1) - prefix.Length);
                         int fileversion = int.Parse(version);
+                        maxversion = Math.Max(maxversion, fileversion);
                         if (fileversion > dbversion)
                         {
                             if (!upgrades.ContainsKey(fileversion))
@@ -132,6 +134,9 @@ namespace Duplicati.GUI
                 }
             }
 
+            if (dbversion > maxversion)
+                throw new Exception(string.Format(Strings.DatabaseUpgrader.InvalidVersionError, dbversion, maxversion, System.IO.Path.GetDirectoryName(sourcefile)));
+
             if (upgrades.Count > 0)
             {
                 string backupfile = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(sourcefile), Strings.DatabaseUpgrader.BackupFilenamePrefix + " " + DateTime.Now.ToString("yyyyMMddhhmmss") + ".sqlite");
diff --git a/Duplicati/GUI/Strings/DatabaseUpgrader.Designer.cs b/Duplicati/GUI/Strings/DatabaseUpgrader.Designer.cs
index 31217ef6e..8f53d94dd 100644
--- a/Duplicati/GUI/Strings/DatabaseUpgrader.Designer.cs
+++ b/Duplicati/GUI/Strings/DatabaseUpgrader.Designer.cs
@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:2.0.50727.3082
+//     Runtime Version:2.0.50727.4952
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -78,6 +78,19 @@ namespace Duplicati.GUI.Strings {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to 
+        ///The database has version {0} but the largest supported version is {1}.
+        ///
+        ///This is likely caused by upgrading to a newer version and then downgrading.
+        ///If this is the case, there is likely a backup file of the previous database version in the folder {2}..
+        /// </summary>
+        internal static string InvalidVersionError {
+            get {
+                return ResourceManager.GetString("InvalidVersionError", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Unknown table layout detected.
         /// </summary>
@@ -88,7 +101,9 @@ namespace Duplicati.GUI.Strings {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Failed to execute SQL: {0}\nError: {1}\nDatabase is NOT upgraded..
+        ///   Looks up a localized string similar to Failed to execute SQL: {0}
+        ///Error: {1}
+        ///Database is NOT upgraded..
         /// </summary>
         internal static string UpgradeFailure {
             get {
diff --git a/Duplicati/GUI/Strings/DatabaseUpgrader.resx b/Duplicati/GUI/Strings/DatabaseUpgrader.resx
index 52b008a35..9a48a0514 100644
--- a/Duplicati/GUI/Strings/DatabaseUpgrader.resx
+++ b/Duplicati/GUI/Strings/DatabaseUpgrader.resx
@@ -125,6 +125,14 @@
     <value>Unable to determine database format: {0}</value>
     <comment>An error message that is displayed if an error occurs while determining database layout</comment>
   </data>
+  <data name="InvalidVersionError" xml:space="preserve">
+    <value>
+The database has version {0} but the largest supported version is {1}.
+
+This is likely caused by upgrading to a newer version and then downgrading.
+If this is the case, there is likely a backup file of the previous database version in the folder {2}.</value>
+    <comment>An error message that is displayed if the database version number does not match</comment>
+  </data>
   <data name="TableLayoutError" xml:space="preserve">
     <value>Unknown table layout detected</value>
     <comment>An error message that is displayed when the layout of the database is unexpected</comment>