/*
 *	PROGRAM:		Firebird authentication
 *	MODULE:			Auth.cpp
 *	DESCRIPTION:	Implementation of interfaces, passed to plugins
 *					Plugins loader
 *
 *  The contents of this file are subject to the Initial
 *  Developer's Public License Version 1.0 (the "License");
 *  you may not use this file except in compliance with the
 *  License. You may obtain a copy of the License at
 *  http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
 *
 *  Software distributed under the License is distributed AS IS,
 *  WITHOUT WARRANTY OF ANY KIND, either express or implied.
 *  See the License for the specific language governing rights
 *  and limitations under the License.
 *
 *  The Original Code was created by Alex Peshkov
 *  for the Firebird Open Source RDBMS project.
 *
 *  Copyright (c) 2010 Alex Peshkov <peshkoff at mail.ru>
 *  and all contributors signed below.
 *
 *  All Rights Reserved.
 *  Contributor(s): ______________________________________.
 */

#include "firebird.h"
#include "../auth/AuthDbg.h"
#include "../jrd/ibase.h"
#include "../common/classes/ImplementHelper.h"

#ifdef AUTH_DEBUG

namespace {
	char name[] = "DEBUG_AUTH";
	Firebird::PluginHelper<Auth::DebugServer, Firebird::Plugin::AuthServer, name> debugServer;
	Firebird::PluginHelper<Auth::DebugClient, Firebird::Plugin::AuthClient, name> debugClient;
}

namespace Auth {

ServerInstance* DebugServer::instance()
{
	return Firebird::interfaceAlloc<DebugServerInstance>();
}

ClientInstance* DebugClient::instance()
{
	return Firebird::interfaceAlloc<DebugClientInstance>();
}

DebugServerInstance::DebugServerInstance()
	: str(*getDefaultMemoryPool())
{ }

Result DebugServerInstance::startAuthentication(bool isService, const char* dbName,
												const unsigned char* dpb, unsigned int dpbSize,
												WriterInterface* writerInterface)
{
	str.erase();
	Firebird::ClumpletReader rdr(isService ?
		Firebird::ClumpletReader::spbList :
		Firebird::ClumpletReader::dpbList, dpb, dpbSize);

	if (rdr.find(isService ? isc_spb_trusted_auth : isc_dpb_trusted_auth))
	{
		str.assign(rdr.getBytes(), rdr.getClumpLength());
	}

	str += '_';
	return AUTH_MORE_DATA;
}

Result DebugServerInstance::contAuthentication(WriterInterface* writerInterface,
											   const unsigned char* data, unsigned int size)
{
	//fprintf(stderr, "DebugServerInstance::contAuthentication: %.*s\n", size, data);
	writerInterface->add(Firebird::string((const char*) data, size).c_str(), "DEBUG", "");
	return AUTH_SUCCESS;
}

void DebugServerInstance::getData(const unsigned char** data, unsigned short* dataSize)
{
	*data = reinterpret_cast<const unsigned char*>(str.c_str());
	*dataSize = str.length();
	//fprintf(stderr, "DebugServerInstance::getData: %.*s\n", *dataSize, *data);
}

void DebugServerInstance::release()
{
	Firebird::interfaceFree(this);
}

DebugClientInstance::DebugClientInstance()
	: str(*getDefaultMemoryPool())
{ }

Result DebugClientInstance::startAuthentication(bool isService, const char*, DpbInterface* dpb)
{
	str = "HAND";
	if (dpb)
	{
		dpb->add((isService ? isc_spb_trusted_auth : isc_dpb_trusted_auth),
				 str.c_str(), str.length());
		return AUTH_SUCCESS;
	}
	return AUTH_MORE_DATA;
}

Result DebugClientInstance::contAuthentication(const unsigned char* data, unsigned int size)
{
	//fprintf(stderr, "DebugClientInstance::contAuthentication: %.*s\n", size, data);
	str.assign(data, size);
	str += "SHAKE";
	return AUTH_CONTINUE;
}

void DebugClientInstance::getData(const unsigned char** data, unsigned short* dataSize)
{
	*data = reinterpret_cast<const unsigned char*>(str.c_str());
	*dataSize = str.length();
	//fprintf(stderr, "DebugClientInstance::getData: %.*s\n", *dataSize, *data);
}

void DebugClientInstance::release()
{
	Firebird::interfaceFree(this);
}

} // namespace Auth

#endif // AUTH_DEBUG