devilution/2020_03_31/Source/restrict.cpp

#include "diablo.h"

BOOL SystemSupported()
{
	BOOL v0; // di
	struct _OSVERSIONINFOA VersionInformation; // [esp+4h] [ebp-94h]

	v0 = 0;
	memset(&VersionInformation, 0, 0x94u);
	VersionInformation.dwOSVersionInfoSize = 148;
	if ( GetVersionEx(&VersionInformation)
	  && VersionInformation.dwPlatformId == 2
	  && VersionInformation.dwMajorVersion >= 5 )
	{
		v0 = 1;
	}
	return v0;
}

BOOL RestrictedTest()
{
	BOOL v0; // si
	FILE *v2; // eax
	char Buffer[260]; // [esp+4h] [ebp-104h]

	v0 = 0;
	if ( SystemSupported() && GetWindowsDirectory(Buffer, 0x104u) )
	{
		strcat(Buffer, "\\Diablo1RestrictedTest.foo");
		v2 = fopen(Buffer, "wt");
		if ( v2 )
		{
			fclose(v2);
			remove(Buffer);
		}
		else
		{
			v0 = 1;
		}
	}
	return v0;
}

BOOL ReadOnlyTest()
{
	BOOL v0; // si
	char *v1; // eax
	FILE *v2; // eax
	char Filename[260]; // [esp+4h] [ebp-104h]

	v0 = 0;
	if ( GetModuleFileName(ghInst, Filename, 0x104u) )
	{
		v1 = strrchr(Filename, '\\');
		if ( v1 )
		{
			strcpy(v1 + 1, "Diablo1ReadOnlyTest.foo");
			v2 = fopen(Filename, "wt");
			if ( v2 )
			{
				fclose(v2);
				remove(Filename);
			}
			else
			{
				v0 = 1;
			}
		}
	}
	return v0;
}