From 03f59b69da242f0c892b02e3a890cde570a27a84 Mon Sep 17 00:00:00 2001
From: Sebastian Messmer <messmer@cryfs.org>
Date: Sat, 26 Mar 2016 23:53:08 +0800
Subject: [PATCH] Since 0.9.3-alpha set the config value cryfs.blocksizeBytes
 wrongly to 32768 (but didn't use the value), we have to add a workaround.

---
 src/cryfs/config/CryConfigLoader.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/cryfs/config/CryConfigLoader.cpp b/src/cryfs/config/CryConfigLoader.cpp
index 2b40bf18..779517f2 100644
--- a/src/cryfs/config/CryConfigLoader.cpp
+++ b/src/cryfs/config/CryConfigLoader.cpp
@@ -5,6 +5,7 @@
 #include <cpp-utils/logging/logging.h>
 #include <boost/algorithm/string/predicate.hpp>
 #include <gitversion/gitversion.h>
+#include <gitversion/VersionCompare.h>
 
 namespace bf = boost::filesystem;
 using cpputils::unique_ref;
@@ -21,6 +22,7 @@ using std::vector;
 using std::string;
 using std::function;
 using std::shared_ptr;
+using gitversion::VersionCompare;
 using namespace cpputils::logging;
 
 namespace cryfs {
@@ -40,6 +42,13 @@ optional<CryConfigFile> CryConfigLoader::_loadConfig(const bf::path &filename) {
   }
   std::cout << "done" << std::endl;
   _checkVersion(*config->config());
+#ifndef CRYFS_NO_COMPATIBILITY
+  //Since 0.9.3-alpha set the config value cryfs.blocksizeBytes wrongly to 32768 (but didn't use the value), we have to fix this here.
+  if (config->config()->Version() != "0+unknown" && VersionCompare::isOlderThan(config->config()->Version(), "0.9.3-rc1")) {
+    config->config()->SetBlocksizeBytes(32832);
+    std::cout << "Workaround BlockSize" << std::endl;
+  }
+#endif
   if (config->config()->Version() != gitversion::VersionString()) {
     config->config()->SetVersion(gitversion::VersionString());
     config->save();