fixed bug #1648616

git-svn-id: https://svn.code.sf.net/p/keepassx/code/trunk@180 b624d157-de02-0410-bad0-e51aec6abb33

changelog

@@ -10,6 +10,7 @@
 - fixed potential compilation problem in AES implementation (Bug #1905810)
 - fixed crash when re-arranging groups (Bug #1754998)
 - fixed size problems of some dialogs
+- files are not longer truncated when saving fails (Bug #1648616)
 
 ---------------
     0.3.0a

src/Kdb3Database.cpp

@@ -1101,6 +1101,7 @@ bool Kdb3Database::save(){
 	quint8 FinalRandomSeed[16];
 	quint8 ContentsHash[32];
 	quint8 EncryptionIV[16];
+
 	if(!(File->openMode() & QIODevice::WriteOnly)){
 		File->close();
 	}
@@ -1239,9 +1240,15 @@ bool Kdb3Database::save(){
 		return false;
 	}
 
-	File->resize(0); //truncate
+	if(!File->resize(EncryptedPartSize+DB_HEADER_SIZE)){
+		delete [] buffer;
+		error=decodeFileError(File->error());
+		return false;	
+	}
+	File->seek(0);
 	if(File->write(buffer,EncryptedPartSize+DB_HEADER_SIZE)!=EncryptedPartSize+DB_HEADER_SIZE){
 		delete [] buffer;
+		error=decodeFileError(File->error());
 		return false;
 	}
 	File->flush();