/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2016 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/

#include "System.h"
#include <sys/mman.h>

#include "Platform/Platform.h"
#include "Platform/SystemLog.h"
#include "Volume/EncryptionThreadPool.h"
#include "Core/Unix/CoreService.h"
#include "Main/Application.h"
#include "Main/Main.h"
#include "Main/UserInterface.h"

#if defined (TC_MACOSX) && !defined (TC_NO_GUI)
#include <ApplicationServices/ApplicationServices.h>
#endif

using namespace VeraCrypt;

int main (int argc, char **argv)
{
	try
	{
		// Make sure all required commands can be executed via default search path
		string sysPathStr = "/usr/sbin:/sbin:/usr/bin:/bin";

		char *sysPath = getenv ("PATH");
		if (sysPath)
		{
			sysPathStr += ":";
			sysPathStr += sysPath;
		}

		setenv ("PATH", sysPathStr.c_str(), 1);

		if (argc > 1 && strcmp (argv[1], TC_CORE_SERVICE_CMDLINE_OPTION) == 0)
		{
			// Process elevated requests
			try
			{
				CoreService::ProcessElevatedRequests();
				return 0;
			}
			catch (exception &e)
			{
#ifdef DEBUG
				SystemLog::WriteException (e);
#endif
			}
			catch (...)	{ }
			return 1;
		}

		// Start core service
		CoreService::Start();
		finally_do ({ CoreService::Stop(); });

		// Start encryption thread pool
		EncryptionThreadPool::Start();
		finally_do ({ EncryptionThreadPool::Stop(); });

#ifdef TC_NO_GUI
		bool forceTextUI = true;
#else
		bool forceTextUI = false;
#endif

#ifdef __WXGTK__
		if (!getenv ("DISPLAY"))
			forceTextUI = true;
#endif

		// Initialize application
		if (forceTextUI || (argc > 1 && (strcmp (argv[1], "-t") == 0 || strcmp (argv[1], "--text") == 0)))
		{
			Application::Initialize (UserInterfaceType::Text);
		}
		else
		{
#if defined (TC_MACOSX) && !defined (TC_NO_GUI)
			if (argc > 1 && !(argc == 2 && strstr (argv[1], "-psn_") == argv[1]))
			{
				ProcessSerialNumber p;
				if (GetCurrentProcess (&p) == noErr)
				{
					TransformProcessType (&p, kProcessTransformToForegroundApplication);
					SetFrontProcess (&p);
				}
			}
#endif
			Application::Initialize (UserInterfaceType::Graphic);
		}

		Application::SetExitCode (1);

		// Start application
		if (::wxEntry (argc, argv) == 0)
			Application::SetExitCode (0);
	}
	catch (ErrorMessage &e)
	{
		wcerr << wstring (e) << endl;
	}
	catch (SystemException &e)
	{
		wstringstream s;
		if (e.GetSubject().empty())
			s << e.what() << endl << e.SystemText();
		else
			s << e.what() << endl << e.SystemText() << endl << e.GetSubject();
		wcerr << s.str() << endl;
	}
	catch (exception &e)
	{
		stringstream s;
		s << StringConverter::GetTypeName (typeid (e)) << endl << e.what();
		cerr << s.str() << endl;
	}

	return Application::GetExitCode();
}