210 lines
7.7 KiB
C
210 lines
7.7 KiB
C
/************************************************************************/
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/* SISCO SOFTWARE MODULE HEADER *****************************************/
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/************************************************************************/
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/* (c) Copyright Systems Integration Specialists Company, Inc., */
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/* 1986 - 2001, All Rights Reserved. */
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/* */
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/* PROPRIETARY AND CONFIDENTIAL */
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/* */
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/* MODULE NAME : rs_read.c */
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/* PRODUCT(S) : MMSEASE, MMSEASE-LITE */
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/* */
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/* MODULE DESCRIPTION : */
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/* This module contains the responder portion of variable read. */
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/* It decodes the variable read request (indication) & encodes */
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/* the variable read response. */
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/* */
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/* GLOBAL FUNCTIONS DEFINED IN THIS MODULE : */
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/* */
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/* MODIFICATION LOG : */
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/* Date Who Rev Comments */
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/* -------- --- ------ ------------------------------------------- */
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/* 03/11/04 GLB 06 Remove "thisFileName" */
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/* 12/20/01 JRB 05 Converted to use ASN1R (re-entrant ASN1) */
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/* 09/13/99 MDE 04 Added SD_CONST modifiers */
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/* 03/23/99 MDE 03 Changes to decode buffer allocation scheme */
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/* 06/15/98 MDE 02 Changes to allow compile under C++ */
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/* 06/09/97 MDE 01 Changed op specific buffer allocation */
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/* 04/02/97 DTL 7.00 MMSEASE 7.0 release. See MODL70.DOC for */
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/* history. */
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/************************************************************************/
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#include "glbtypes.h"
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#include "sysincs.h"
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#include "mmsdefs.h"
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#include "mms_pvar.h"
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#include "asn1defs.h"
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/************************************************************************/
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/* variables global to the DECODE portion : */
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static READ_REQ_INFO *req_info;
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static ST_INT max_vars;
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/************************************************************************/
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/* variables global to the ENCODE portion : NONE */
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static ST_VOID read_va_spec_cstr (ASN1_DEC_CTXT *aCtx);
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static ST_VOID read_va_spec_cstr_done (ASN1_DEC_CTXT *aCtx);
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static ST_VOID read_va_spec_done (ASN1_DEC_CTXT *aCtx);
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static ST_VOID read_get_spec_in_rslt (ASN1_DEC_CTXT *aCtx);
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/************************************************************************/
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/************************************************************************/
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/* mms_read_req */
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/* This function is called from MMSDEC when the opcode for this */
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/* operation is decoded. Setup state machine function pointers, etc. */
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/************************************************************************/
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ST_VOID mms_read_req (ASN1_DEC_CTXT *aCtx)
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{
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ST_INT req_size;
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MLOG_CDEC0 ("Variable Read Request");
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#if defined(FIXED_DECBUF)
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max_vars = m_sv_max_read_var_spec;
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req_size = mmsl_dec_info_size;
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#else
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max_vars = _mmsdec_msglen / 4; /* find maximum storage required */
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if (m_sv_max_read_var_spec && (max_vars > m_sv_max_read_var_spec))
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max_vars = m_sv_max_read_var_spec;
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req_size = sizeof (READ_REQ_INFO) + (sizeof (VARIABLE_LIST) * max_vars);
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#endif
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/* get storage for request information */
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req_info = (READ_REQ_INFO *) _m_get_dec_buf (aCtx, req_size);
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req_info->spec_in_result = SD_FALSE; /* set default value */
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ASN1R_TAG_ADD (aCtx, CTX, 0, read_get_spec_in_rslt);
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ASN1R_TAG_ADD (aCtx, CTX | CONSTR, 1, read_va_spec_cstr);
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}
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/************************************************************************/
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/* read_get_spec_in_rslt */
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/* decoding variable read request: specification in result was */
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/* encountered. */
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/************************************************************************/
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static ST_VOID read_get_spec_in_rslt (ASN1_DEC_CTXT *aCtx)
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{
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MLOG_CDEC0 ("read_get_spec_in_rslt");
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req_info->spec_in_result = SD_TRUE; /* specification in rslt pres */
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if (asn1r_get_bool (aCtx, &req_info->spec_in_result))
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asn1r_set_dec_err (aCtx, REQ_BAD_VALUE);
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ASN1R_TAG_ADD (aCtx, CTX | CONSTR, 1, read_va_spec_cstr);
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}
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/************************************************************************/
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/* read_va_spec_cstr */
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/* decoding variable read request: variable access specification */
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/* constructor was encountered. */
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/************************************************************************/
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static ST_VOID read_va_spec_cstr (ASN1_DEC_CTXT *aCtx)
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{
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MLOG_CDEC0 ("read_va_spec_cstr");
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_ms_get_va_spec (aCtx, &req_info->va_spec, max_vars, read_va_spec_done);
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}
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/************************************************************************/
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/* read_va_spec_done */
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/* decoding variable read request: variable access specification */
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/* has been decoded. */
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/************************************************************************/
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static ST_VOID read_va_spec_done (ASN1_DEC_CTXT *aCtx)
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{
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MLOG_CDEC0 ("read_va_spec_done");
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aCtx->asn1r_c_done_fun [aCtx->asn1r_msg_level] = read_va_spec_cstr_done;
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}
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/************************************************************************/
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/* read_va_spec_cstr_done */
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/* decoding variable read request: variable access specification */
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/* constructor done was encountered. */
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/************************************************************************/
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static ST_VOID read_va_spec_cstr_done (ASN1_DEC_CTXT *aCtx)
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{
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ST_INT req_size;
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/* find actual size for request info */
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req_size = sizeof (READ_REQ_INFO)
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+ (sizeof (VARIABLE_LIST)*req_info->va_spec.num_of_variables);
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/* give back unused storage */
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_mms_dec_info = (*m_realloc_os_fun) (_mms_dec_info,req_size);
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req_info = (READ_REQ_INFO *) _mms_dec_info;
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_ms_set_cs_check (aCtx); /* check for Companion Standard info */
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}
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#ifndef MMS_LITE
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/************************************************************************/
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/************************************************************************/
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/* mp_read_resp */
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/* This function is called from either the application or the virtual */
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/* machine to ENCODE & send the variable read response. */
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/************************************************************************/
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ST_RET mp_read_resp (MMSREQ_IND *indptr, READ_RESP_INFO *info_ptr)
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{
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return (_mms_resp_send (MMSOP_READ,indptr,
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M_CAST_MK_FUN (_ms_mk_read_resp),
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(ST_CHAR *)info_ptr));
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}
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#else
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/************************************************************************/
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/************************************************************************/
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/* mpl_read_resp */
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/* This function is called from either the application or the virtual */
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/* machine to ENCODE the variable read response. */
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/************************************************************************/
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ST_RET mpl_read_resp (ST_UINT32 invoke_id, READ_RESP_INFO *info_ptr)
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{
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return (_mms_resp_fin (MMSOP_READ,invoke_id,
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M_CAST_MK_FUN (_ms_mk_read_resp),
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(ST_CHAR *)info_ptr));
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}
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#endif
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/************************************************************************/
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/************************************************************************/
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/* _ms_mk_read_resp */
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/* Construct a variable read response. */
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/************************************************************************/
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ST_VOID _ms_mk_read_resp (ASN1_ENC_CTXT *aCtx, READ_RESP_INFO *info)
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{
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ST_INT i;
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ACCESS_RESULT *ar_ptr;
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asn1r_strt_constr (aCtx); /* start context tag 1 cstr */
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ar_ptr = info->acc_rslt_list;
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ar_ptr += info->num_of_acc_result - 1;
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for (i = 0; i < info->num_of_acc_result; i++)
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{
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_ms_wr_va_access_rslt (aCtx, ar_ptr);
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ar_ptr--;
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}
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asn1r_fin_constr (aCtx, 1,CTX, DEF); /* finish context tag 1 cstr */
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if (info->va_spec_pres)
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{
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asn1r_strt_constr (aCtx); /* start context tag 0 cstr */
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_ms_wr_va_spec (aCtx, &info->va_spec);
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asn1r_fin_constr (aCtx, 0, CTX, DEF); /* finish context tag 0 cstr */
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}
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/* write the context specific explicit tag for this opcode. */
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asn1r_fin_constr (aCtx, MMSOP_READ,CTX,DEF); /* tag = opcode, ctx constr */
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}
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