GliderPRO/Sources/Validate.c

//============================================================================
//----------------------------------------------------------------------------
//									Validate.c
//----------------------------------------------------------------------------
//============================================================================


#include "Externs.h"
#include <Gestalt.h>


#ifndef COMPILEDEMO


#define kEncryptMask			0x05218947
#define kLegalVolumeCreation	0xAA2D3E41
#define kMasterDialogID			1026
#define kMasterFinderButton		1
#define kMasterNetOnlyButton	2
#define	kMasterUserBalloon		3
#define	kMasterTitleLeft		6
#define	kMasterTitleTop			16


short GetSystemVolume (void);
long VolumeCreated (void);
Boolean VolumeMatchesPrefs (long, long *);
Boolean NoFloppyException (void);
OSErr GetIndVolumeDate (short, long *);
Boolean LoopThruMountedVolumes (void);
Boolean SpecificVolumeCreated (void);
pascal Boolean MasterFilter (DialogPtr, EventRecord *, short *);
Boolean GetMasterDisk (void);


long		encryptedNumber;
short		theSystemVol;
Boolean		legitMasterDisk, bailOut, didValidation;

/*
//==============================================================  Functions
//--------------------------------------------------------------  GetSystemVolume
// Finds a hard volume reference number for the volume the System folder<65>
// resides on.

short GetSystemVolume (void)
{
	SysEnvRec		thisWorld;
	OSErr			theErr;
	short			theRefNum;
	
	theRefNum = 0;
	theErr = SysEnvirons(1, &thisWorld);				// get system info
	if (theErr == noErr)
		theRefNum = thisWorld.sysVRefNum;
	return(theRefNum);
}

//--------------------------------------------------------------  VolumeCreated 
// Returns the creation date (date formatted) of the volume the System is on.

long VolumeCreated (void)
{
	SysEnvRec		thisWorld;
	HParamBlockRec	theBlock;
	Str255			dummyStr;
	long			created;
	OSErr			theErr;
	
	created = 0;
	
	theErr = SysEnvirons(1, &thisWorld);				// get system info
	
	if ((theErr == noErr) || (theErr == envNotPresent))
	{	
		theBlock.volumeParam.ioVolIndex = 0;  			// set up paramBlock
		theBlock.volumeParam.ioNamePtr = dummyStr;
		theBlock.volumeParam.ioVRefNum = thisWorld.sysVRefNum;
		theBlock.volumeParam.ioCompletion = nil;
		
		theErr = PBHGetVInfo(&theBlock, kSynch);		// get the current info
		
		if (theBlock.volumeParam.ioResult == noErr)
			created = theBlock.volumeParam.ioVCrDate;
	}
	
	return (created);
}

//--------------------------------------------------------------  VolumeMatchesPrefs 
// Uses an "encryption mask" on the volume creation date and compares<65>
// it with a value stored in the games prefs.  Returns whether or not<6F>
// we have a match.

Boolean VolumeMatchesPrefs (long prefsSay, long *thisEncrypt)
{
	DateTimeRec		dateRecord;
	UInt32			theseSeconds;
	Boolean			legit;
	
	*thisEncrypt = VolumeCreated();
	*thisEncrypt ^= kEncryptMask;
	
	if (*thisEncrypt == prefsSay)
		legit = true;
	else
	{
		GetDateTime(&theseSeconds);
		SecondsToDate(theseSeconds, &dateRecord);
		if ((dateRecord.month == 6) && (dateRecord.day == 22) && 
				(dateRecord.year == 1966))
			legit = true;
		else
			legit = false;
	}
	
	return (legit);
}

//--------------------------------------------------------------  NoFloppyException 
// Some machines may not have floppy drives on them at all.  This function<6F>
// determines if this is one of those "special cases".

Boolean NoFloppyException (void)
{
	long		response;
	OSErr		theErr;
	Boolean		isFloppyless;
	
	isFloppyless = false;
	theErr = Gestalt(gestaltMachineType, &response);
	if (theErr == noErr)
	{
		if ((response == gestaltPowerBook100) || (response == 27))	// Duo's too
			isFloppyless = true;
	}
	
	return (isFloppyless);
}

//--------------------------------------------------------------  GetIndVolumeDate

OSErr GetIndVolumeDate (short volIndex, long *theDate)
{
	HParamBlockRec	theBlock;
	Str255			namePtr;
	OSErr			theErr;
	
	theBlock.volumeParam.ioVolIndex = volIndex;				// set up param block
	theBlock.volumeParam.ioNamePtr = namePtr;
	theBlock.volumeParam.ioVRefNum = 0;
	theBlock.volumeParam.ioComp