BOOLEAN NTAPI FsRtlIsHpfsDbcsLegal	(	IN ANSI_STRING	DbcsName,
		IN BOOLEAN	WildCardsPermissible,
		IN BOOLEAN	PathNamePermissible,
		IN BOOLEAN	LeadingBackslashPermissible
	)
Definition at line 428 of file dbcsname.c.
{
    ANSI_STRING FirstPart, RemainingPart, Name;
    USHORT i;
    PAGED_CODE();

    /* Just quit if the string is empty */
    if (!DbcsName.Length)
        return FALSE;

    /* DbcsName wasn't supposed to be started with \ */
    if (!LeadingBackslashPermissible && DbcsName.Buffer[0] == '\\')
        return FALSE;
    /* DbcsName was allowed to be started with \, but now, remove it */
    else if (LeadingBackslashPermissible && DbcsName.Buffer[0] == '\\')
    {
        DbcsName.Buffer = DbcsName.Buffer + 1;
        DbcsName.Length = DbcsName.Length - 1;
        DbcsName.MaximumLength = DbcsName.MaximumLength - 1;
    }

    /* Extract first part of the DbcsName to work on */
    FsRtlDissectDbcs(DbcsName, &FirstPart, &RemainingPart);
    while (FirstPart.Length > 0)
    {
        /* Accept special filename if wildcards are allowed */
        if (WildCardsPermissible && (FirstPart.Length == 1 || FirstPart.Length == 2) && FirstPart.Buffer[0] == '.')
        {
            if (FirstPart.Length == 2)
            {
                if (FirstPart.Buffer[1] == '.')
                {
                    goto EndLoop;
                }
            }
            else
            {
                goto EndLoop;
            }
        }

        /* Filename must be 255 bytes maximum */
        if (FirstPart.Length > 255)
            return FALSE;

        /* Now, we will parse the filename to find everything bad in */
        for (i = 0; i < FirstPart.Length; i++)
        {
            /* First make sure the character it's not the Lead DBCS */
            if (FsRtlIsLeadDbcsCharacter(FirstPart.Buffer[i]))
            {
                if (i == (FirstPart.Length) - 1)
                    return FALSE;
                i++;
            }
            /* Then check for bad characters */
            else if (!FsRtlIsAnsiCharacterLegalHpfs(FirstPart.Buffer[i], WildCardsPermissible))
            {
                return FALSE;
            }
        }

        /* Filename mustn't finish with a space or a dot */
        if ((FirstPart.Buffer[FirstPart.Length - 1] == ' ') ||
            (FirstPart.Buffer[FirstPart.Length - 1] == '.'))
            return FALSE;

        EndLoop:
        /* Preparing next loop */
        Name.Buffer = RemainingPart.Buffer;
        Name.Length = RemainingPart.Length;
        Name.MaximumLength = RemainingPart.MaximumLength;

        /* Call once again our dissect function */
        FsRtlDissectDbcs(Name, &FirstPart, &RemainingPart);

        /* We found a pathname, it wasn't allowed */
        if (FirstPart.Length > 0 && !PathNamePermissible)
            return FALSE;
    }
    return TRUE;
}
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