show key dialog again if hash test fails

git-svn-id: https://svn.code.sf.net/p/keepassx/code/trunk@116 b624d157-de02-0410-bad0-e51aec6abb33

src/Database.h

@@ -394,6 +394,7 @@ public:
 		\return TRUE if the creation was successfull, otherwise FALSE.
 	*/
 	virtual bool createKeyFile(const QString& filename,int length=32, bool Hex=false)=0;
+	virtual bool isKeyError()=0;
 };
 
 class IKdbSettings{

src/StandardDatabase.cpp

@@ -421,6 +421,7 @@ SHA256::hashBuffer(buffer+DB_HEADER_SIZE,FinalKey,crypto_size);
 
 if(memcmp(ContentsHash, FinalKey, 32) != 0){
 	error=tr("Hash test failed.\nThe key is wrong or the file is damaged.");
+	KeyError=true;
 	return false;}
 
 unsigned long tmp_id=0;
@@ -1359,7 +1360,16 @@ void StandardDatabase::create(){
 	RootGroup.Handle=NULL;
 	Algorithm=Rijndael_Cipher;
 	KeyTransfRounds=6000;
+	KeyError=false;
+}
 
+bool StandardDatabase::isKeyError(){
+	if(KeyError){
+		KeyError=false;
+		return true;	
+	}
+	else
+		return false;
 }
 
 IEntryHandle* StandardDatabase::cloneEntry(const IEntryHandle* entry){

src/StandardDatabase.h

@@ -146,6 +146,7 @@ public:
 	virtual int numEntries();
 	virtual int numGroups();
 	virtual QString getError();
+	virtual bool isKeyError();
 	virtual void cleanUpHandles();
 	virtual QPixmap& icon(int index);
  	virtual int	numIcons();
@@ -227,6 +228,7 @@ private:
 	QList<QPixmap>CustomIcons;
 	QFile* File;
 	QString error;
+	bool KeyError;
 	QList<StdEntry> UnknownMetaStreams;
 	unsigned int KeyTransfRounds;
 	CryptAlgorithm Algorithm;

src/mainwindow.cpp

@@ -336,11 +336,14 @@ void KeepassMainWindow::openDatabase(QString filename,bool IsAuto){
 	else{
 		StatusBarGeneral->setText(tr("Loading Failed"));
 		QString error=db->getError();
+		bool KeyError=auth->isKeyError();
 		delete db;
 		if(error==QString())error=tr("Unknown error while loading database.");
 		QMessageBox::critical(this,tr("Error")
 								,tr("The following error occured while opening the database:\n%1")
 								.arg(error),tr("OK"));
+		if(KeyError)
+			openDatabase(filename,IsAuto);
 	}
 	StatusBarGeneral->setText(tr("Ready"));
 }