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10,7/dil/dilsrc/xpnopn.b36
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%TITLE 'XPNOPN - Open a network link'
MODULE xpnopn (
ENTRY ( XPN$OPEN ),
IDENT = '3'
) =
BEGIN
! COPYRIGHT (C) DIGITAL EQUIPMENT CORPORATION 1985.
! ALL RIGHTS RESERVED.
!
! THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND
! COPIED ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH
! THE INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR
! ANY OTHER COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE
! AVAILABLE TO ANY OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE
! SOFTWARE IS HEREBY TRANSFERRED.
!
! THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT
! NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL
! EQUIPMENT CORPORATION.
!
! DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF
! ITS SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
!++
! FACILITY:
! Transportable BLISS interface to DECNET, TOPS10 implementation
!
! ABSTRACT:
! This module contains the BLISSnet OPEN function support routines.
!
! ENVIRONMENT:
! TOPS10 user mode.
!
! AUTHOR: Larry Campbell, CREATION DATE: 2 November, 1981
!
! MODIFIED BY: Andrew Nourse
!
! 04 - Start TOPS-10 support [Doug Rayner]
! 03 - Make FAL debugging hack work
! 02 - Make connect format 1 work
! 01 - The beginning
!
! Start using the DIL standard edit history format.
!
! Edit (%O'2', '12-Apr-84', 'Sandy Clemens')
! %( Add the TOPS-10 BLISSnet sources for DIL V2. )%
!
! Edit (%O'6', '5-Oct-84', 'Sandy Clemens')
! %( Add new format of COPYRIGHT notice. FILES: ALL )%
!--
!
! TABLE OF CONTENTS:
!
FORWARD ROUTINE
xpn$open, ! First level routine
xpn$$open; ! Actual work routine
!
! INCLUDE FILES:
!
LIBRARY 'BLI:XPORT'; ! XPORT definitions
LIBRARY 'BLISSNET'; ! BLISSnet definitions
LIBRARY 'BLI:UUOSYM'; ! TOPS10 monitor definitions
LIBRARY 'BLSN10'; ! BLISSnet-10 internal definitions
LIBRARY 'UUODEF'; ! UUO definition macros
LIBRARY 'BLI:TENDEF'; ! System dependant macros
!
! MACROS:
!
!
! EQUATED SYMBOLS:
!
!
! UNDELCARED SYMBOLS: Some problems with UUO macros defined in UUOSYM
!
UNDECLARE
%QUOTE OUTPUT,
%QUOTE WAIT;
!
! OWN STORAGE:
!
!
! EXTERNAL REFERENCES:
!
EXTERNAL ROUTINE
xpn$$uuo_error, ! Interpret NSP. error codes
xpn$$valid_nlb, ! Validate an NLB
xpn$$int_set : NOVALUE, ! Set up for interrupts for a link
xpn$pmr; ! Negotiate poor-man's routing
GLOBAL ROUTINE xpn$open (nlb, success_routine, failure_routine) =
!++
! FUNCTIONAL DESCRIPTION:
! This is the first level imperative routine for the OPEN function.
! The expansion of the $XPN_OPEN macro calls this routine. xpn$$open
! is called to perform the OPEN function. The completion code is
! checked, and the success or failure action routine is called, as
! appropriate.
!
! FORMAL PARAMETERS:
! nlb - address of the Network Link Block
! success_routine - address of a success action routine, or zero if
! no action routine is to be called
! failure-routine - address of a failure action routine, or zero if
! no action routine is to be called
!
! IMPLICIT INPUTS:
! NONE
!
! IMPLICIT OUTPUTS:
! NLB$G_COMP_CODE is set based on the return code from the success or
! failure action routine. NLB$G_2ND_CODE may be set if a failure occurs;
! in particular, if a NSP. error occurs it is set to the error code.
!
! ROUTINE VALUE and
! COMPLETION CODES:
! The completion code from the success or failure action routine is
! returned as the routine value, if an action routine is called.
! Otherwise, the completion code from xpn$$open is returned.
!
! SIDE EFFECTS:
! A network link is opened.
!
!--
BEGIN
MAP
nlb : REF $XPN_NLB();
LOCAL
original_primary_code,
primary_code,
secondary_code,
retcode;
nlb_binds; ! create nice names for NLB fields
!
! validate the NLB
!
retcode = xpn$$valid_nlb (.nlb);
IF NOT .retcode
THEN
BEGIN
original_primary_code = XPN$_BAD_NLB;
secondary_code = .retcode
END
ELSE
BEGIN
!
! Initialize all common fields and bits.
!
nlb[NLB$V_DATA_REQ] = 0;
nlb[NLB$V_END_MSG] = 0;
nlb[NLB$V_STRING] = 0;
nlb[NLB$V_ABORTALL] = 0;
nlb[NLB$V_CONN_REQ] = 0;
nlb[NLB$V_ABORTED] = 0;
nlb[NLB$V_DISCONNECTED] = 0;
nlb[NLB$V_IRPT_MSG] = 0;
nlb[NLB$V_OPEN] = 0;
nlb[NLB$V_CONNECTED] = 0;
nlb[NLB$V_VALIDITY] = 0;
nlb[NLB$V_INT_SET] = 0;
!
! If allowing poor-man's routing, do it that way, otherwise
! do simple open
!
IF .nlb[NLB$V_PMR]
THEN
original_primary_code = xpn$pmr (.nlb)
ELSE
BEGIN
original_primary_code = xpn$$open (.nlb);
!
! If caller specified OPTION = WAIT, and there are no errors so far,
! wait for an event.
!
IF .nlb[NLB$V_WAIT] AND (.original_primary_code)
THEN
BEGIN
LOCAL
nlb_vec : VECTOR[2];
nlb_vec[0] = 1;
nlb_vec[1] = .nlb;
xpn$$int_set (nlb_vec); ! Set up for interrupts
original_primary_code = $XPN_EVENT_INFO (NLB = .nlb,
FAILURE = 0,
OPTION = WAIT);
END;
END;
nlb[NLB$G_COMP_CODE] = .original_primary_code;
secondary_code = .nlb[NLB$G_2ND_CODE]
END;
!
! Check completion code and call success or failure routine as required
!
IF .original_primary_code
THEN
IF .success_routine NEQ 0
THEN
primary_code =
(.success_routine) (XPN$K_OPEN, .original_primary_code,
.secondary_code, .nlb)
ELSE
primary_code = .original_primary_code
ELSE
IF .failure_routine NEQ 0
THEN
primary_code =
(.failure_routine) (XPN$K_OPEN, .original_primary_code,
.secondary_code, .nlb)
ELSE
primary_code = .original_primary_code;
!
! Unless the NLB was bad, store the completion code there
!
IF .original_primary_code NEQ XPN$_BAD_NLB
THEN
nlb[NLB$G_COMP_CODE] = .primary_code;
RETURN (.primary_code);
END; !End of XPN$OPEN
ROUTINE xpn$$open (nlb) =
!++
! FUNCTIONAL DESCRIPTION:
! This is the work routine for xpn$open.
!
! FORMAL PARAMETERS:
! nlb - address of the Network Link Block
!
! IMPLICIT INPUTS:
! nlb[NLB$V_ACTIVE]
! nlb[NLB$V_PASSIVE]
!
! IMPLICIT OUTPUTS:
! nlb[NLB$H_JFN] - gets JFN for the link
!
! ROUTINE VALUE and
! COMPLETION CODES:
! XPN$_NORMAL - normal (success) return
! XPN$_NO_OPEN - DECnet-10 failed to open link
! various
!
! XPN$_BUG - bug, or not-yet-implemented function
!
! SIDE EFFECTS:
! NONE
!
!--
BEGIN
MAP
nlb : REF $XPN_NLB ();
LOCAL
nsp_arg_blk : MONBLOCK[$NSAA1+1] INITIAL (0),
nsp_connect_blk : VECTOR[$NSCUD+1]
INITIAL ($NSCUD+1, REP $NSCUD OF (0)),
nsp_dest_proc_blk : VECTOR[$NSDPN+1]
INITIAL ($NSDPN+1, REP $NSDPN OF (0)),
nsp_src_proc_blk : VECTOR[$NSDOB+1]
INITIAL ($NSDOB+1),
nsp_node_string_ptr : VECTOR[XPN$K_HOSTN_MAX_LEN_W]
INITIAL (XPN$K_HOSTN_MAX_LEN_W),
nsp_dest_task_string_ptr : VECTOR[XPN$K_TASKN_MAX_LEN_W]
INITIAL (XPN$K_TASKN_MAX_LEN_W),
nsp_userid_string_ptr : VECTOR[XPN$K_USRID_MAX_LEN_W]
INITIAL (XPN$K_USRID_MAX_LEN_W),
nsp_account_string_ptr : VECTOR[XPN$K_ACCNT_MAX_LEN_W]
INITIAL (XPN$K_ACCNT_MAX_LEN_W),
nsp_password_string_ptr : VECTOR[XPN$K_PASWD_MAX_LEN_W]
INITIAL (XPN$K_PASWD_MAX_LEN_W),
nsp_optdt_string_ptr : VECTOR[XPN$K_OPTDT_MAX_LEN_W]
INITIAL (XPN$K_OPTDT_MAX_LEN_W);
REGISTER
t1;
BIND
nsp_node_size = nsp_node_string_ptr[0],
nsp_dest_task_size = nsp_dest_task_string_ptr[0],
nsp_userid_size = nsp_userid_string_ptr[0],
nsp_account_size = nsp_account_string_ptr[0],
nsp_password_size = nsp_password_string_ptr[0],
nsp_optdt_size = nsp_optdt_string_ptr[0];
nlb_binds; ! Get short names for popular fields
!
! Copy node name to connect block
!
nsp_connect_blk[$NSCND] = nsp_node_string_ptr[0];
IF (nsp_node_size<lh> =.remote_host[STR$H_LENGTH]) GTR 0
THEN
$STR_COPY (STRING = remote_host,
TARGET = (XPN$K_HOSTN_MAX_LEN_C,
CH$PTR (nsp_node_string_ptr[1],0,8)))
ELSE
!
! Since DECnet-10 will not default the node to the local
! node, we have to do it here. Get the local node in SIXBIT
! from the DNET. UUO. Another problem with DECnet-10 is that
! the node name can not have spaces in it. So, we have to
! check for sixbit spaces, and convert only the non-space sixbit
! characters to 8-bit ASCII.
!
BEGIN
LOCAL
dnet_arg_blk : VECTOR[3],
cnt,
ptr1,
ptr2;
REGISTER
t1;
t1 = dnet_arg_blk[0];
dnet_arg_blk[0] = (DN$FLE + ($DNLNN ^ 18) + 3);
IF DNET$_UUO(t1)
THEN
BEGIN
ptr1 = CH$PTR(dnet_arg_blk[2],0,6);
ptr2 = CH$FIND_CH(6,.ptr1,0); !look for SIXBIT <space>
IF CH$FAIL(.ptr2) THEN cnt = 6 ELSE cnt = CH$DIFF(.ptr2,.ptr1);
nsp_node_size<lh> = .cnt;
ptr2 = CH$PTR (nsp_node_string_ptr[1],0,8);
INCR i FROM 1 TO .cnt DO
CH$WCHAR_A((CH$RCHAR_A(ptr1) + %C' '),ptr2);
END;
END;
!
! Build dummy local process descriptor block
!
nsp_connect_blk[$NSCSD] = nsp_src_proc_blk[0];
nsp_src_proc_blk[$NSDFM] = 0; !Format 0
nsp_src_proc_blk[$NSDOB] = %O'345'; !arbitrary user definable object
! type. Needed to keep VMS
! happy.
!
! Build remote process descriptor block
!
nsp_connect_blk[$NSCDD] = nsp_dest_proc_blk[0];
IF active
THEN
BEGIN
CASE remote_format FROM 0 TO 2 OF
SET
[0] : !Format 0: object type must be non-zero
BEGIN
IF remote_object_type EQL 0
THEN
RETURN (XPN$_NO_OBJECT);
nsp_dest_proc_blk[$NSDOB] = remote_object_type;
END;
[1] : !Format 1: connect by task name, object must = 0
BEGIN
IF (remote_object_type NEQ 0
OR .remote_descriptor[STR$H_LENGTH] GTR XPN$K_TASKN_MAX_LEN_C)
THEN
RETURN (XPN$_IVFORMAT);
nsp_dest_proc_blk[$NSDFM] = 1;
nsp_dest_proc_blk[$NSDPN] = nsp_dest_task_string_ptr[0];
nsp_dest_task_size<lh> = .remote_descriptor[STR$H_LENGTH];
$STR_COPY (STRING = remote_descriptor,
TARGET = (XPN$K_TASKN_MAX_LEN_C,
CH$PTR (nsp_dest_task_string_ptr[1],0,8)));
END;
[2] : !Format 2: connect by user/group and task name
BEGIN
RETURN (XPN$_BUG) ! *** not implemented
END;
TES;
END
ELSE
BEGIN
CASE local_format FROM 0 TO 2 OF
SET
[0] : !Format 0: object type must be non-zero
BEGIN
IF local_object_type EQL 0
THEN
RETURN (XPN$_NO_OBJECT);
nsp_dest_proc_blk[$NSDOB] = local_object_type;
END;
[1] : !Format 1: connect by task name, object must = 0
BEGIN
IF (local_object_type NEQ 0
OR .local_descriptor[STR$H_LENGTH] GTR XPN$K_TASKN_MAX_LEN_C)
THEN
RETURN (XPN$_IVFORMAT);
nsp_dest_proc_blk[$NSDFM] = 1;
nsp_dest_proc_blk[$NSDPN] = nsp_dest_task_string_ptr[0];
nsp_dest_task_size<lh> = .local_descriptor[STR$H_LENGTH];
$STR_COPY (STRING = local_descriptor,
TARGET = (XPN$K_TASKN_MAX_LEN_C,
CH$PTR (nsp_dest_task_string_ptr[1],0,8)));
END;
[2] : !Format 2: connect by user/group and task name
BEGIN
RETURN (XPN$_BUG) ! *** not implemented
END;
TES;
END;
!
! Copy user_id to connect block if it is provided
!
IF user_ID NEQ 0
THEN
BEGIN
IF .user_ID[STR$H_LENGTH] GTR XPN$K_USRID_MAX_LEN_C
THEN
RETURN (XPN$_IVUSERLEN);
nsp_connect_blk[$NSCUS] = nsp_userid_string_ptr[0];
IF (nsp_userid_size<lh> = .user_ID[STR$H_LENGTH]) NEQ 0
THEN
$STR_COPY (STRING = user_ID,
TARGET = (XPN$K_USRID_MAX_LEN_C,
CH$PTR (nsp_userid_string_ptr[1],0,8)));
END;
!
! Copy password to connect block if it is provided
!
IF password NEQ 0
THEN
BEGIN
IF .password[STR$H_LENGTH] GTR XPN$K_PASWD_MAX_LEN_C
THEN
RETURN (XPN$_IVPWDLEN);
nsp_connect_blk[$NSCPW] = nsp_password_string_ptr[0];
IF (nsp_password_size<lh> = .password[STR$H_LENGTH]) NEQ 0
THEN
$STR_COPY (STRING = password,
TARGET = (XPN$K_PASWD_MAX_LEN_C,
CH$PTR (nsp_password_string_ptr[1],0,8)));
END;
!
! Copy account to connect block if it is provided
!
IF account NEQ 0
THEN
BEGIN
IF .account[STR$H_LENGTH] GTR XPN$K_ACCNT_MAX_LEN_C
THEN
RETURN (XPN$_IVACCTLEN);
nsp_connect_blk[$NSCAC] = nsp_account_string_ptr[0];
IF (nsp_account_size<lh> = .account[STR$H_LENGTH]) NEQ 0
THEN
$STR_COPY(STRING = account,
TARGET = (XPN$K_ACCNT_MAX_LEN_C,
CH$PTR (nsp_account_string_ptr[1],0,8)));
END;
!
! Copy optional user data to connect block if it is provided
!
IF optional NEQ 0
THEN
BEGIN
IF .optional[STR$H_LENGTH] GTR XPN$K_OPTDT_MAX_LEN_C
THEN
RETURN (XPN$_IVOPTLEN);
nsp_connect_blk[$NSCUD] = nsp_optdt_string_ptr[0];
IF (nsp_optdt_size<lh> = .optional[STR$H_LENGTH]) NEQ 0
THEN
$STR_COPY (STRING = optional,
TARGET = (XPN$K_OPTDT_MAX_LEN_C,
CH$PTR (nsp_optdt_string_ptr[1],0,8)));
END;
nsp_arg_blk[$NSAFN,NS$AFN] =
(IF active THEN $NSFEA ELSE $NSFEP); !function
nsp_arg_blk[$NSAFN,NS$ALN] = $NSAA1 + 1; !size of block
nsp_arg_blk[$NSACH,$WORD] = 0; !will return channel
nsp_arg_blk[$NSAA1,$WORD] = nsp_connect_blk[0]; !pointer to connect blk
t1 = nsp_arg_blk[0,$WORD];
IF NOT NSP$_UUO(t1)
THEN
RETURN (xpn$$uuo_error (.nlb,.t1));
nlb[NLB$H_JFN] = .nsp_arg_blk[$NSACH,NS$ACH];
nlb[NLB$V_OPEN] = 1;
IF active
THEN
nlb[NLB$V_CONN_REQ] = 1;
RETURN (XPN$_NORMAL)
END; !End of xpn$$open
END !End of module XPNOPN
ELUDOM