Beispiel #1
0
static int ret_int_int(int port, int i, int j)
{
    char buf[9];
    buf[0] = 1;
    put_int32(i, buf+1);
    put_int32(j, buf+5);
    driver_output(port, buf, 9);
    return i;
}
Beispiel #2
0
static int
state_reply(RegPort* rp,	/* Pointer to port structure. */
	    HKEY root,		/* Handle to root key for this key. */
	    LPSTR name,		/* Pointer to name. */
	    DWORD nameSize)	/* Length of name. */
{
    char sbuf[512];
    char* s = sbuf;
    int needed = 1+4+nameSize;
    int i;

    if (sizeof sbuf < needed) {
	s = driver_alloc(needed);
    }

    s[0] = 's';
    i = 1;
    put_int32((DWORD) root, s+i);
    i += 4;
    memcpy(s+i, name, nameSize);
    ASSERT(i+nameSize == needed);
    driver_output(rp->port, s, needed);

    if (s != sbuf) {
	driver_free(s);
    }
    return 1;
}
Beispiel #3
0
static int
value_reply(RegPort* rp,	/* Pointer to port structure. */
	    DWORD type,		/* Type of value */
	    LPSTR name,		/* Pointer to name. */
	    DWORD nameSize,	/* Length of name. */
	    LPSTR value,	/* Pointer to value. */
	    DWORD valueSize)	/* Size of value. */
{
    char sbuf[512];
    char* s = sbuf;
    int needed = 1+4+nameSize+1+valueSize;
    int i;

    if (sizeof sbuf < needed) {
	s = driver_alloc(needed);
    }

    s[0] = 'v';
    i = 1;
    put_int32(type, s+i);
    i += 4;
    memcpy(s+i, name, nameSize);
    i += nameSize;
    s[i++] = '\0';
    memcpy(s+i, value, valueSize);
    ASSERT(i+valueSize == needed);
    driver_output(rp->port, s, needed);

    if (s != sbuf) {
	driver_free(s);
    }
    return 1;
}
Beispiel #4
0
PRIVATESTUFF int
reply_bytes(descriptor *d, long id, char *b, int blen)
{
#define		TMPSIZE	(RESBUFSIZE+5)
    char	tmp[TMPSIZE];

    assert(blen < TMPSIZE);

    /*
     * Contents of buffer sent back:
     *
     * +------------------------------+
     * | FILE_RESP_ERROR | ID | Bytes |
     * |      1 byte     | 4  | {var} |
     * +------------------------------+
     */

    fprintf(DEBUGIO, "reply_bytes: gonna send %d total bytes\r\n", blen+1);
    *tmp = EXP1_RESP_BYTES;
    put_int32(id, tmp + 1);
    memcpy(tmp + 5, b, blen);
    driver_output2(d->port, tmp, blen + 5, NULL, 0);
    fprintf(DEBUGIO, "reply_bytes: done\r\n");
    return 0;
}
Beispiel #5
0
ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Lo,Hi) */
    BIGNUM *bn_from = NULL, *bn_to, *bn_rand;
    unsigned char* data;
    unsigned dlen;
    ERL_NIF_TERM ret;

    if (!get_bn_from_mpint(env, argv[0], &bn_from)
	|| !get_bn_from_mpint(env, argv[1], &bn_rand)) {
	if (bn_from) BN_free(bn_from);
	return enif_make_badarg(env);
    }

    bn_to = BN_new();
    BN_sub(bn_to, bn_rand, bn_from);
    BN_pseudo_rand_range(bn_rand, bn_to);
    BN_add(bn_rand, bn_rand, bn_from);
    dlen = BN_num_bytes(bn_rand);
    data = enif_make_new_binary(env, dlen+4, &ret);
    put_int32(data, dlen);
    BN_bn2bin(bn_rand, data+4);
    ERL_VALGRIND_MAKE_MEM_DEFINED(data+4, dlen);
    BN_free(bn_rand);
    BN_free(bn_from);
    BN_free(bn_to);
    return ret;
}
Beispiel #6
0
static BOOL
fix_value_result(RegPort* rp, LONG result, DWORD type,
		 LPSTR name, DWORD nameSize, LPSTR value, DWORD valueSize)
{
    if (result == ERROR_MORE_DATA) {
	DWORD max_name1;
	DWORD max_name2;
	DWORD max_value;
	int ok;

	ok = RegQueryInfoKey(rp->hkey, NULL, NULL, NULL,
			     NULL, &max_name1, NULL, NULL, &max_name2,
			     &max_value, NULL, NULL);
#ifdef DEBUG
	if (ok != ERROR_SUCCESS) {
	    char buff[256];
	    sprintf(buff,"Failure in registry_drv line %d, error = %d",
		    __LINE__, GetLastError());
	    MessageBox(NULL, buff, "Internal error", MB_OK);
	    ASSERT(ok == ERROR_SUCCESS);
	}
#endif
	rp->name_buf_size = (max_name1 > max_name2 ? max_name1 : max_name2) 
	    + 1;
	rp->value_buf_size = max_value + 1;
	rp->name_buf = driver_realloc(rp->name_buf, rp->name_buf_size);
	rp->value_buf = driver_realloc(rp->value_buf, rp->value_buf_size);
	return FALSE;
    } else if (result != ERROR_SUCCESS) {
	reply(rp, result);
	return TRUE;
    }
  
    /*
     * Do some data conversion which is easier to do here
     * than in Erlang.
     */

    switch (type) {
    case REG_SZ:
    case REG_EXPAND_SZ:
	valueSize--;		/* No reason to send the '\0' to Erlang. */
	break;
    case REG_DWORD_LITTLE_ENDIAN:
    case REG_DWORD_BIG_ENDIAN:
	/*
	 * The value is a DWORD stored in host byte order.
	 * We must retrieve it and store it in network byte order.
	 */
	{
	    DWORD dword = * ((DWORD *) value);
	    put_int32(dword, value);
	    type = REG_DWORD;	/* Simplify life for Erlang code. */
	    break;
	}
    }

    return value_reply(rp, type, name, nameSize, value, valueSize);
}
Beispiel #7
0
static void driver_ret32(ErlDrvPort port, unsigned int r)
{
    char ch = XX_I32;
    unsigned char rbuf[4];

    put_int32(r, rbuf);
    driver_output2(port, &ch, 1, rbuf, 4);
}
Beispiel #8
0
static int ret_int(int port, int ret)
{
    char buf[5];
    buf[0] = 1;
    put_int32(ret, buf+1);
    driver_output(port, buf, 5);
    return ret;
}
Beispiel #9
0
void
put_p32string(buffer *b, const char *str)
{
	int size = strlen(str);

	put_int32(b, size);
	Assert(b->ptr + size + 1 <= b->max_size);
	memcpy((void*) BUFFER_POS(b), str, size);
	b->ptr += size;
	b->fill_size += size;
}
Beispiel #10
0
void
put_int64(buffer *b, const uint64_t val)
{
	/* dirty workaround */
	union {
		uint64_t i64;
		struct
		{
			uint32_t lo;
			uint32_t hi;
		} i32;
	} my_int64;

	my_int64.i64 = val;

	Assert(sizeof(uint64_t) == 8);
	Assert(b->ptr + sizeof(uint64_t) <= b->max_size);

	put_int32(b, my_int64.i32.hi);
	put_int32(b, my_int64.i32.lo);
}
Beispiel #11
0
static void sendfile_drv_ready_output(ErlDrvData handle, ErlDrvEvent ev)
{
    Desc* d = (Desc*)handle;
    ssize_t result;
    off_t cur_offset;
    Transfer* xfer;
    SocketFd* sfd = (SocketFd*)&ev;
    xfer = (Transfer*)hashtable_search(d->xfer_table, sfd->hashkey);
    if (xfer == NULL) {
        /* fatal error, something is very wrong */
        driver_failure_atom(d->port, "socket_fd_not_found");
        return;
    }
    cur_offset = xfer->offset;
    result = sendfile_call(sfd->socket_fd, xfer->file_fd,
                           &xfer->offset, xfer->count);
    if (result < 0 && (errno == EAGAIN || errno == EWOULDBLOCK ||
                       errno == EINPROGRESS || errno == EALREADY)) {
        if (xfer->offset != cur_offset) {
            off_t written = xfer->offset - cur_offset;
            xfer->count -= written;
            xfer->total += written;
        }
    } else {
        int save_errno = errno;
        ErlDrvSizeT out_buflen;
        char buf[36];
        Buffer b;
        b.buffer = buf;
        memset(buf, 0, sizeof buf);
#ifdef ERL_DRV_WRITE
        driver_select(d->port, ev, ERL_DRV_WRITE, 0);
#else
        driver_select(d->port, ev, DO_WRITE, 0);
#endif
        close(xfer->file_fd);
        if (result < 0) {
            out_buflen = set_error_buffer(&b, sfd->socket_fd, save_errno);
        } else {
            uint64_t total = xfer->total + result;
            put_int64(total, &(b.result->count.count));
            put_int32(sfd->socket_fd, &(b.result->out_fd));
            b.result->success = 1;
            b.result->errno_string[0] = '\0';
            out_buflen = sizeof(*b.result);
        }
        xfer->file_fd = -1;
        xfer->offset = xfer->count = xfer->total = 0;
        driver_output(d->port, buf, out_buflen);
    }
}
Beispiel #12
0
static size_t set_error_buffer(Buffer* b, int socket_fd, int err)
{
    char* s, *t;
    size_t result_size = sizeof *(b->result);
    memset(b->result, 0, result_size);
    put_int32(socket_fd, &(b->result->out_fd));
    s = erl_errno_id(err);
    if (strcmp(s, "unknown") == 0 && err == EOVERFLOW) {
        s = "EOVERFLOW";
    }
    for (t = b->result->errno_string; *s; s++, t++) {
        *t = tolower(*s);
    }
    *t = '\0';
    return result_size - 1 + t - b->result->errno_string;
}
Beispiel #13
0
PRIVATESTUFF int
reply_error(descriptor *d, long id, int err)
{
    char response[TMPSIZE];         /* Response buffer. */
    char* s;
    char* t;

    /*
     * Contents of buffer sent back:
     *
     * +----------------------------------------------+
     * | FILE_RESP_ERROR | ID | Posix error id string |
     * |        1 byte   | 4  |       {var}           |
     * +----------------------------------------------+
     */

    response[0] = EXP1_RESP_ERROR;
    put_int32(id, response + 1);
    for (s = erl_errno_id(err), t = response+5; *s; s++, t++)
        *t = tolower(*s);
    driver_output2(d->port, response, t-response, NULL, 0);
    return 0;
}
Beispiel #14
0
Datei: dh.c Projekt: KennethL/otp
ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (PrivKey|undefined, DHParams=[P,G], Mpint, Len|0) */
    DH *dh_params = NULL;
    int mpint; /* 0 or 4 */

    {
        ERL_NIF_TERM head, tail;
        BIGNUM
            *dh_p = NULL,
            *dh_g = NULL,
            *priv_key_in = NULL;
        unsigned long
            len = 0;

        if (!(get_bn_from_bin(env, argv[0], &priv_key_in)
              || argv[0] == atom_undefined)
            || !enif_get_list_cell(env, argv[1], &head, &tail)
            || !get_bn_from_bin(env, head, &dh_p)
            || !enif_get_list_cell(env, tail, &head, &tail)
            || !get_bn_from_bin(env, head, &dh_g)
            || !enif_is_empty_list(env, tail)
            || !enif_get_int(env, argv[2], &mpint) || (mpint & ~4)
            || !enif_get_ulong(env, argv[3], &len)

            /* Load dh_params with values to use by the generator.
               Mem mgmnt transfered from dh_p etc to dh_params */
            || !(dh_params = DH_new())
            || (priv_key_in && !DH_set0_key(dh_params, NULL, priv_key_in))
            || !DH_set0_pqg(dh_params, dh_p, NULL, dh_g)
            ) {
            if (priv_key_in) BN_free(priv_key_in);
            if (dh_p) BN_free(dh_p);
            if (dh_g) BN_free(dh_g);
            if (dh_params) DH_free(dh_params);
            return enif_make_badarg(env);
        }

        if (len) {
            if (len < BN_num_bits(dh_p))
                DH_set_length(dh_params, len);
            else {
                if (priv_key_in) BN_free(priv_key_in);
                if (dh_p) BN_free(dh_p);
                if (dh_g) BN_free(dh_g);
                if (dh_params) DH_free(dh_params);
                return enif_make_badarg(env);
            }
        }
    }

#ifdef HAS_EVP_PKEY_CTX
    {
        EVP_PKEY_CTX *ctx;
        EVP_PKEY *dhkey, *params;
        int success;

        params = EVP_PKEY_new();
        success = EVP_PKEY_set1_DH(params, dh_params);   /* set the key referenced by params to dh_params... */
        DH_free(dh_params);                              /* ...dh_params (and params) must be freed */
        if (!success) return atom_error;

        ctx = EVP_PKEY_CTX_new(params, NULL);
        EVP_PKEY_free(params);
        if (!ctx) {
            return atom_error;
        }

        if (!EVP_PKEY_keygen_init(ctx)) {
            /* EVP_PKEY_CTX_free(ctx); */
            return atom_error;
        }

        dhkey = EVP_PKEY_new();
        if (!EVP_PKEY_keygen(ctx, &dhkey)) {         /* "performs a key generation operation, the ... */
                                                     /*... generated key is written to ppkey." (=last arg) */
             /* EVP_PKEY_CTX_free(ctx); */
             /* EVP_PKEY_free(dhkey); */
             return atom_error;
        }

        dh_params = EVP_PKEY_get1_DH(dhkey); /* return the referenced key. dh_params and dhkey must be freed */
        EVP_PKEY_free(dhkey);
        if (!dh_params) {
            /* EVP_PKEY_CTX_free(ctx); */
            return atom_error;
        }
        EVP_PKEY_CTX_free(ctx);
    }
#else
    if (!DH_generate_key(dh_params)) return atom_error;
#endif
    {
        unsigned char *pub_ptr, *prv_ptr;
        int pub_len, prv_len;
        ERL_NIF_TERM ret_pub, ret_prv;
        const BIGNUM *pub_key_gen, *priv_key_gen;

        DH_get0_key(dh_params,
                    &pub_key_gen, &priv_key_gen); /* Get pub_key_gen and priv_key_gen.
                                                     "The values point to the internal representation of
                                                     the public key and private key values. This memory
                                                     should not be freed directly." says man */
        pub_len = BN_num_bytes(pub_key_gen);
        prv_len = BN_num_bytes(priv_key_gen);
        pub_ptr = enif_make_new_binary(env, pub_len+mpint, &ret_pub);
        prv_ptr = enif_make_new_binary(env, prv_len+mpint, &ret_prv);
        if (mpint) {
            put_int32(pub_ptr, pub_len); pub_ptr += 4;
            put_int32(prv_ptr, prv_len); prv_ptr += 4;
        }
        BN_bn2bin(pub_key_gen, pub_ptr);
        BN_bn2bin(priv_key_gen, prv_ptr);
        ERL_VALGRIND_MAKE_MEM_DEFINED(pub_ptr, pub_len);
        ERL_VALGRIND_MAKE_MEM_DEFINED(prv_ptr, prv_len);

        DH_free(dh_params);

        return enif_make_tuple2(env, ret_pub, ret_prv);
    }
}
Beispiel #15
0
int write_test1(TEST_DATA *data, IO_BUFFER *iobuf)
{
   IO_ITEM_HEADER item_header;
   int i;
   
   item_header.type = 99;             /* test data */
   item_header.version = 0;          /* Version 0 (test) */
   item_header.ident = 123;
   
   put_item_begin(iobuf,&item_header);

   put_long(data->lvar[0],iobuf);
   put_long(data->lvar[1],iobuf);
   put_long((long)data->ilvar[0],iobuf);
   put_long((long)data->ilvar[1],iobuf);
   put_short(data->isvar[0],iobuf);
   put_short(data->isvar[1],iobuf);
   put_short(data->svar[0],iobuf);
   put_short(data->svar[1],iobuf);
   put_short(data->svar[2],iobuf);
   put_real(data->fvar[0],iobuf);
   put_real(data->fvar[1],iobuf);
   put_double(data->dvar[0],iobuf);
   put_double(data->dvar[1],iobuf);
   put_sfloat(data->hvar[0],iobuf);
   put_sfloat(data->hvar[1],iobuf);
   put_byte(data->i8var[0],iobuf);
   put_byte(data->i8var[1],iobuf);
   put_byte(data->u8var[0],iobuf);
   put_byte(data->u8var[1],iobuf);
   put_short(data->i16var[0],iobuf);
   put_short(data->i16var[1],iobuf);
   put_short(data->u16var[0],iobuf);
   put_short(data->u16var[1],iobuf);
   put_int32(data->i32var[0],iobuf);
   put_int32(data->i32var[1],iobuf);
   put_uint32(data->u32var[0],iobuf);
   put_uint32(data->u32var[1],iobuf);
#ifdef HAVE_64BIT_INT
   put_vector_of_int64(&data->i64var[0],1,iobuf);
   put_vector_of_int64(&data->i64var[1],1,iobuf);
   put_vector_of_uint64(&data->u64var[0],1,iobuf);
   put_vector_of_uint64(&data->u64var[1],1,iobuf);
#endif   
   put_count(data->nbvar,iobuf);
   put_byte(data->bvar[0],iobuf);
   put_byte(data->bvar[1],iobuf);
   for (i=0; i<4; i++)
      put_count16(data->cnt16var[i],iobuf);
   for (i=0; i<6; i++)
      put_count32(data->cnt32var[i],iobuf);
   for (i=0; i<6; i++)
      put_count(data->cntzvar[i],iobuf);
   for (i=0; i<8; i++)
      put_count(data->cntvar[i],iobuf);
   for (i=0; i<10; i++)
      put_scount16(data->scnt16var[i],iobuf);
   for (i=0; i<12; i++)
      put_scount32(data->scnt32var[i],iobuf);
   for (i=0; i<12; i++)
      put_scount(data->scntzvar[i],iobuf);
   for (i=0; i<14; i++)
      put_scount(data->scntvar[i],iobuf);
   put_string(data->str16var,iobuf);
   put_long_string(data->str32var,iobuf);
   put_var_string(data->strvvar,iobuf);
   return(put_item_end(iobuf,&item_header));
}
Beispiel #16
0
static int sl_output(int port, char *buf, int len)
{
    int x,y,z,v,w;
    char *str, *t1, *t2, *t3;
    int ret;
    char ch;


    /* check for signals */

    if (signal_cought != 0) {  /* async out signal */
	char xxx[5];

	xxx[0] = 0;
	put_int32(signal_cought, xxx+1);
	driver_output(port, xxx, 5);
	signal_cought = 0;
    }

    switch (*buf++) {
    case INIT_TTY: {
	int abort_char, flow_ctl, opost;
	abort_char = get_int32(buf); buf+=4;
	flow_ctl = get_int32(buf); buf+= 4;
	opost = get_int32(buf); buf+= 4;
	ret = SLang_init_tty (abort_char,flow_ctl, opost);
	return ret_int(port, ret);
    }
    
    case SET_ABORT_FUNCTION: {
	SLang_set_abort_signal (NULL);
	return ret_int(port, 0);
    }
    case GETKEY: {
	unsigned int key;
	if (SLang_input_pending (0) == 0) {
	    wait_for = GETKEY;
	    driver_select(port, 0, DO_READ, 1);
	    return 0;
	}
	x = SLang_getkey ();
	return ret_int(port, x);
    }
    /* read a symbol */
    case KP_GETKEY: {
	if (SLang_input_pending (0) == 0) {
	    wait_for = KP_GETKEY;
	    driver_select(port, 0, DO_READ, 1);
	    return 0;
	}
	x = SLkp_getkey ();
	return ret_int(port, x);
    }
    case UNGETKEY: {
	unsigned char  key =  (unsigned char) *buf;
	SLang_ungetkey (key); 
	return 0;
    }
    case RESET_TTY: {
	SLang_reset_tty();
	return 0;
    }
    case KP_INIT: {
	return ret_int(port, SLkp_init ());
    }
    case SETVAR: {
	x = get_int32(buf);buf+= 4;
	y = get_int32(buf);
	switch (x) {
	case  esl_baud_rate:
	    SLang_TT_Baud_Rate = y; return 0;
	case esl_read_fd:
	    return 0;
	case esl_abort_char:
	    SLang_Abort_Char = y; return 0;
	case esl_ignore_user_abort:
	    SLang_Ignore_User_Abort=y; return 0;
	case esl_input_buffer_len :
	    SLang_Input_Buffer_Len=y; return 0;
	case  esl_keyboard_quit:
	    SLKeyBoard_Quit=y; return 0;
	case esl_last_key_char:
	    SLang_Last_Key_Char=y; return 0;
	case esl_rl_eof_char:
	    SLang_RL_EOF_Char=y; return 0;
	case esl_rline_quit:
	    SLang_Rline_Quit=y; return 0;
	case esl_screen_rows:
	case  esl_screen_cols :
	    return 0;
	case esl_tab_width:
	    SLsmg_Tab_Width=y; return 0;
	case  esl_newline_behaviour:
	    SLsmg_Newline_Behavior=y; return 0;
	case esl_error:
	    SLang_Error=y; return 0;
	case esl_version:
	    return 0;
	case  esl_backspace_moves :
	    SLsmg_Backspace_Moves=y; return 0;
	case esl_display_eight_bit:
	    SLsmg_Display_Eight_Bit=y; return 0;
	default:
	    return 0;
	}
    }

    case GETVAR: {
	x = get_int32(buf);
	switch (x) {
	case  esl_baud_rate:
	    return ret_int(port, SLang_TT_Baud_Rate);
	case esl_read_fd:
	    return ret_int(port,  SLang_TT_Read_FD);
	case esl_abort_char:
	    return (ret_int(port, SLang_Abort_Char));
	case esl_ignore_user_abort:
	    return ret_int(port, SLang_Ignore_User_Abort);
	case esl_input_buffer_len :
	    return ret_int(port, SLang_Input_Buffer_Len);
	case  esl_keyboard_quit:
	    return ret_int(port, SLKeyBoard_Quit);
	case esl_last_key_char:
	    return ret_int(port, SLang_Last_Key_Char);
	case esl_rl_eof_char:
	    return ret_int(port, SLang_RL_EOF_Char);
	case esl_rline_quit:
	    return ret_int(port, SLang_Rline_Quit);
	case esl_screen_rows:
	    return ret_int(port, SLtt_Screen_Rows);
	case  esl_screen_cols :
	    return ret_int(port, SLtt_Screen_Cols);
	case esl_tab_width:
	    return ret_int(port, SLsmg_Tab_Width);
	case  esl_newline_behaviour:
	    return ret_int(port, SLsmg_Newline_Behavior);
	case esl_error:
	    return ret_int(port, SLang_Error);
	case esl_version:
	    return ret_int(port, SLang_Version); 
	case  esl_backspace_moves :
	    return ret_int(port, SLsmg_Backspace_Moves);
	case esl_display_eight_bit:
	    return  ret_int(port, SLsmg_Display_Eight_Bit);
	default:
	    return ret_int(port, -1);
	}
    }
	    


    /*{{{ SLsmg Screen Management Functions */


    
    case SMG_FILL_REGION: {
	x = get_int32(buf); buf+= 4;
	y =  get_int32(buf); buf+= 4;
	z = get_int32(buf); buf+= 4;
	v = get_int32(buf); buf+= 4;
	ch = *buf;
	SLsmg_fill_region(x, y,z,v,ch);
	return 0;
    }			  
    case SMG_SET_CHAR_SET: {
	x = get_int32(buf); buf+= 4;
	SLsmg_set_char_set(x);
	return 0;
    }			
    case SMG_SUSPEND_SMG: {
	return ret_int(port, SLsmg_suspend_smg());
    }				  
    case SMG_RESUME_SMG: {
	ret_int(port, SLsmg_resume_smg());
    }				     
    case SMG_ERASE_EOL: {
	SLsmg_erase_eol();
	return 0;
    }					
    case SMG_GOTORC: {
	x = get_int32(buf); buf+= 4;
	y = get_int32(buf); buf+= 4;
	SLsmg_gotorc(x,  y);
	return 0;
    }					 
    case SMG_ERASE_EOS: {
	SLsmg_erase_eos();
	return 0;
    }						
    case SMG_REVERSE_VIDEO: {
	SLsmg_reverse_video();
	return 0;
    }							
    case SMG_SET_COLOR: {
	x = get_int32(buf); buf+= 4;
	SLsmg_set_color(x);
	return 0;
    }							
    case SMG_NORMAL_VIDEO: {
	SLsmg_normal_video();
	return 0;
    }							
    case SMG_WRITE_STRING: {
	SLsmg_write_string(buf);
	return 0;
    }									   
    case SMG_WRITE_CHAR: {
	ch = *buf;
	SLsmg_write_char(ch);
	return 0;
    }
    case SMG_WRITE_WRAPPED_STRING: {
	t1 = buf;
	buf += strlen(t1) + 1;
	x = get_int32(buf); buf+= 4;
	y = get_int32(buf); buf+= 4;
	z = get_int32(buf); buf+= 4;
	v = get_int32(buf); buf+= 4;
	w = get_int32(buf); buf+= 4;
	SLsmg_write_wrapped_string(t1, x,y,z,v,w);
	return 0;
    }												   
    case SMG_CLS: {
	SLsmg_cls();
	return 0;
    }									
    case SMG_REFRESH: {
	SLsmg_refresh();
	return 0;
    }										
    case SMG_TOUCH_LINES: {
	x = get_int32(buf); buf+= 4;
	y = get_int32(buf); buf+= 4;
	SLsmg_touch_lines(x, y);
	return 0;
    }											
    case SMG_TOUCH_SCREEN: {
#if (SLANG_VERSION < 10400 )
	return ret_int(port, -1);
#else
	SLsmg_touch_screen();
#endif
	return 0;
    }													   
    case SMG_INIT_SMG: {
	return ret_int(port,  SLsmg_init_smg());
    }													   
    case SMG_REINIT_SMG: {
#if (SLANG_VERSION < 10400 )
	return ret_int(port, -1);
#else
	return ret_int(port, SLsmg_reinit_smg());
#endif
    }														 
    case SMG_RESET_SMG: {
	SLsmg_reset_smg();
	return 0;
    }														    
    case SMG_CHAR_AT: {
	return ret_int(port, SLsmg_char_at());
    }														     
    case SMG_SET_SCREEN_START: {
	int *ip1, *ip2;
	*ip1 = get_int32(buf); buf+= 4;
	*ip2 = get_int32(buf); buf+= 4;

	SLsmg_set_screen_start(ip1, ip2);
	return ret_int_int(port, *ip1, *ip2);
    }
    case SMG_DRAW_HLINE: {
	x = get_int32(buf); buf+= 4;
	SLsmg_draw_hline(x);
	return 0;
    }																 
    case SMG_DRAW_VLINE: {
	x = get_int32(buf); buf+= 4;
	SLsmg_draw_vline(x);
	return 0;
    }																     
    case SMG_DRAW_OBJECT: {
	x = get_int32(buf); buf+= 4;
	y = get_int32(buf); buf+= 4;
	x = get_int32(buf); buf+= 4;
	SLsmg_draw_object(x, y,z);
	return 0;
    }																	  
    case SMG_DRAW_BOX: {
	x = get_int32(buf); buf+= 4;
	y = get_int32(buf); buf+= 4;
	z = get_int32(buf); buf+= 4;
	v = get_int32(buf); buf+= 4;
	SLsmg_draw_box(x, y,z,v);
	return 0;
    }																	   
    case SMG_GET_COLUMN: {
	return ret_int(port, SLsmg_get_column());
    }																		
    case SMG_GET_ROW: {
	return ret_int(port, SLsmg_get_row());
    }		

    case SMG_FORWARD: {
	x = get_int32(buf); buf+= 4;
	SLsmg_forward(x);
	return 0;
    }							
    case SMG_WRITE_COLOR_CHARS: {
	SLsmg_Char_Type * sl;
	sl = decode_smg_char_type(&buf);
	x = get_int32(buf); buf+= 4;
	SLsmg_write_color_chars(sl, x);
	return 0;
    }		
    case SMG_READ_RAW: {
	x = get_int32(buf); buf+= 4;
	t1 = malloc((2*x) + 2 + 1);
	y = SLsmg_read_raw((unsigned short*)t1 +1, x);
	t1[1] = 1;
	driver_output(port, t1, y+1);
	free(t1);
	return 0;
    }
    case SMG_WRITE_RAW: {
	SLsmg_Char_Type * sl;
	sl = decode_smg_char_type(&buf);
	x = get_int32(buf); 
	y = SLsmg_write_raw(sl, x);
	return ret_int(port, y);
    }																				
    case SMG_SET_COLOR_IN_REGION: {
	x = get_int32(buf); buf+= 4;
	y = get_int32(buf); buf+= 4;
	z = get_int32(buf); buf+= 4;
	v = get_int32(buf); buf+= 4;
	w = get_int32(buf); buf+= 4;
	SLsmg_set_color_in_region(x, y,z,v,w);
	return 0;
    }																				
    
    




    /* all the tt_functions  */

    case TT_FLUSH_OUTPUT: {
	ret = SLtt_flush_output();
	return ret_int(port, ret);
    }
    case TT_SET_SCROLL_REGION: {

	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	SLtt_set_scroll_region(x, y);
	return 0;
    }
    case TT_RESET_SCROLL_REGION: {
	SLtt_reset_scroll_region();
	return 0;
    }
    case TT_REVERSE_VIDEO: {
	SLtt_reverse_video (get_int32(buf));
	return 0;
    }
    case TT_BOLD_VIDEO: {
	SLtt_begin_insert();
	return 0;
    }
    case TT_BEGIN_INSERT: {
	SLtt_begin_insert();
	return 0;
    }
    case TT_END_INSERT: {
	SLtt_end_insert();
	return 0;
    }
    case TT_DEL_EOL: {
	SLtt_del_eol();
	return 0;
    }
    case TT_GOTO_RC: {
	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	SLtt_goto_rc (x, y);
	return 0;
    }
    case TT_DELETE_NLINES: {
	SLtt_delete_nlines(get_int32(buf));
	return 0;
    }
    case TT_DELETE_CHAR: {
	SLtt_delete_char();
	return 0;
    }
    case TT_ERASE_LINE: {
	SLtt_erase_line();
	return 0;
    }
    case TT_NORMAL_VIDEO: {
	SLtt_normal_video();
	return 0;
    }
    case TT_CLS: {
	SLtt_cls();
	return 0;
    }
    case TT_BEEP: {
	SLtt_beep();
	return 0;
    }
    case TT_REVERSE_INDEX: {
	SLtt_reverse_index(get_int32(buf));
	return 0;
    }
    case TT_SMART_PUTS: {
	SLsmg_Char_Type *t1 ;
	SLsmg_Char_Type *t2;

	t1 = decode_smg_char_type(&buf);
	t2 = decode_smg_char_type(&buf);
	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	SLtt_smart_puts(t1, t2,x,y);
	return 0;
    }
    case TT_WRITE_STRING: {
	SLtt_write_string (buf);
	return 0;
    }
    case TT_PUTCHAR: {
	SLtt_putchar((char) get_int32(buf));
	return 0;
    }
    case TT_INIT_VIDEO: {
	ret = SLtt_init_video ();
	return ret_int(port, ret);	
    }
    case TT_RESET_VIDEO: {
	SLtt_reset_video ();
	return 0;
    }
    case TT_GET_TERMINFO: {
	SLtt_get_terminfo();
	return 0;
    }
    case TT_GET_SCREEN_SIZE: {
	SLtt_get_screen_size ();
	return 0;
    }
    case TT_SET_CURSOR_VISIBILITY: {
	ret = SLtt_set_cursor_visibility (get_int32(buf));
	return ret_int(port, ret);	
    }
    case TT_SET_MOUSE_MODE: {
	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	ret = SLtt_set_mouse_mode (x,y);
	return ret_int(port, ret);	
    }

    case TT_INITIALIZE: {
	ret =SLtt_initialize (buf);
	return ret_int(port, ret);	
    }
    case TT_ENABLE_CURSOR_KEYS: {
	SLtt_enable_cursor_keys();
	return 0;
    }
    case TT_SET_TERM_VTXXX: {
	
	return 0;
    }
    case TT_SET_COLOR_ESC: {
	x = get_int32(buf); buf+=4;
	SLtt_set_color_esc (x, buf);
	return 0;
    }
    case TT_WIDE_WIDTH: {
	SLtt_narrow_width();
	return 0;
    }
    case TT_NARROW_WIDTH: {
	SLtt_narrow_width();
	return 0;
    }
    case TT_SET_ALT_CHAR_SET: {
	SLtt_set_alt_char_set (get_int32(buf));
	return 0;
    }
    case TT_WRITE_TO_STATUS_LINE: {
	x = get_int32(buf); buf+=4;
	SLtt_write_to_status_line (buf, x);
	return 0;
    }
    case TT_DISABLE_STATUS_LINE: {
	SLtt_disable_status_line ();
	return 0;
    }


    case TT_TGETSTR: {
	str = SLtt_tgetstr (buf);
	return ret_string(port, str);
    }
    case TT_TGETNUM: {
	x = SLtt_tgetnum (buf);
	return ret_int(port, x);
    }
    case TT_TGETFLAG: {
	x = SLtt_tgetflag (buf);
	return  ret_int(port, x);
    }
    case TT_TIGETENT: {
	str = SLtt_tigetent (buf);
	return ret_string(port, str);
    }
    case TT_TIGETSTR: {
	
	return 0;
    }
    case TT_TIGETNUM: {

	return 0;
    }

    case SLTT_GET_COLOR_OBJECT: {
	x = get_int32(buf); buf+=4;
	y = SLtt_get_color_object (x);
	return  ret_int(port, y);
	return 0;
    }
    case TT_SET_COLOR_OBJECT: {
	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	SLtt_set_color_object (x, y);
	return 0;
    }
    case TT_SET_COLOR: {
	x = get_int32(buf); buf+=4;
	t1 = buf;
	t2 = buf + (strlen(t1) + 1);
	t3 = buf + (strlen(t1) + strlen(t2) + 2);
	SLtt_set_color (x, t1, t2, t3);
	return 0;
    }
    case TT_SET_MONO: {
	x = get_int32(buf); buf+=4;
	t1 = buf;
	buf += strlen(t1) + 1;
	y = get_int32(buf);
	SLtt_set_mono (x, t1, y);
	return 0;
    }
    case TT_ADD_COLOR_ATTRIBUTE: {
	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	SLtt_add_color_attribute (x, y);
	return 0;
    }
    case TT_SET_COLOR_FGBG: {
	x = get_int32(buf); buf+=4;
	y = get_int32(buf); buf+=4;
	z = get_int32(buf); buf+=4;
	SLtt_set_color_fgbg (x, y, z);
	return 0;
    }
    case ISATTY: {
	x = get_int32(buf); buf+=4;
	return ret_int(port, isatty(x));
    }
    case EFORMAT: {
	fprintf(stderr, "%s", buf);
	fflush(stderr);
	return 0;
    }
    case SIGNAL: {
	x = get_int32(buf); buf+=4;
	SLsignal(x_to_sig(x), sig_handler);
	return 0;
    }
    case SIGNAL_CHECK: {
	/* polled */
	if (signal_cought != 0)
	    signal_cought = 0;
	return ret_int(port, signal_cought);
    }

    default:
	return 0;
    }
}