281 lines
11 KiB
C
281 lines
11 KiB
C
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/************************************************************************/
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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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/* 1997-2002, All Rights Reserved */
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/* */
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/* PROPRIETARY AND CONFIDENTIAL */
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/* */
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/* MODULE NAME : coppdaru.c */
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/* PRODUCT(S) : MOSI Stack (over TP4) */
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/* */
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/* MODULE DESCRIPTION : */
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/* This file implements decoding of U-ABORT indication. */
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/* */
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/* For information see the: */
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/* ISO 8822 "Information processing systems - Open Systems */
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/* Interconnection - Connection oriented presentation service */
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/* definition. */
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/* ISO 8823 "Information processing systems - Open Systems */
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/* Interconnection - Connection oriented presentation protocol */
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/* specification. */
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/* */
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/* */
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/* GLOBAL FUNCTIONS DEFINED IN THIS MODULE : */
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/* */
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/* u_cosp_u_abort_ind */
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/* */
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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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/* 02/26/09 JRB 07 Fix to handle PDV len=0 or User-data len=0. */
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/* 01/30/06 GLB 06 Integrated porting changes for VMS */
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/* 01/02/02 JRB 05 Converted to use ASN1R (re-entrant ASN1) */
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/* 03/18/98 JRB 04 Use defines (not variables) for ASN1 errors. */
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/* 12/22/97 JRB 03 Use ST_INT8. */
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/* 05/27/97 JRB 7.00 MMSEASE 7.0 release. */
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/* 03/19/97 JRB 02 General cleanup. */
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/* 02/27/97 JRB 01 Created */
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/************************************************************************/
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#ifdef DEBUG_SISCO
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static char *thisFileName = __FILE__;
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#endif
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#include "glbtypes.h"
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#include "sysincs.h"
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#include "mem_chk.h"
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#include "asn1defs.h"
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#include "acse2.h"
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#include "copp.h"
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#include "cosp_usr.h"
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/************************************************************************/
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/* Global Variables */
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/************************************************************************/
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/* Structure for tracking ARP/ARU decode. */
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typedef struct
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{
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#define COPP_U_ABORT 0 /* Use to set "abort_type" */
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#define COPP_P_ABORT 1 /* Use to set "abort_type" */
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ST_INT8 abort_type;
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ST_INT8 abort_reason;
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ST_INT8 event_id;
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} DECODE_ARX;
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static DECODE_ARX decode_arx;
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static ST_VOID START_aru (ASN1_DEC_CTXT *aCtx);
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static ST_VOID START_pc_identifier_list (ASN1_DEC_CTXT *aCtx);
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static ST_VOID START_sequence (ASN1_DEC_CTXT *aCtx);
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static ST_VOID decode_pci (ASN1_DEC_CTXT *aCtx);
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static ST_VOID decode_tsn (ASN1_DEC_CTXT *aCtx);
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static ST_VOID END_sequence (ASN1_DEC_CTXT *aCtx);
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static ST_VOID END_pc_identifier_list (ASN1_DEC_CTXT *aCtx);
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static ST_VOID END_aru (ASN1_DEC_CTXT *aCtx);
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static ST_VOID START_arp (ASN1_DEC_CTXT *aCtx);
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static ST_VOID decode_abort_reason (ASN1_DEC_CTXT *aCtx);
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static ST_VOID decode_event_id (ASN1_DEC_CTXT *aCtx);
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static ST_VOID END_arp (ASN1_DEC_CTXT *aCtx);
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/************************************************************************/
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/* u_cosp_u_abort_ind */
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/*----------------------------------------------------------------------*/
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/* This USER function is called by the SS-Provider to indicate that a */
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/* connection has been aborted by remote SS-user. */
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/* */
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/* Parameters: */
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/* ACSE_CONN *acse_conn Pointer to connection info */
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/* */
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/* Return: */
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/* ST_VOID */
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/************************************************************************/
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ST_VOID u_cosp_u_abort_ind (ACSE_CONN *acse_conn)
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{
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ASN1_DEC_CTXT localDecCtx; /* For readability, use "aCtx" to access this.*/
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ASN1_DEC_CTXT *aCtx = &localDecCtx;
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memset (aCtx, 0, sizeof (ASN1_DEC_CTXT)); /* CRITICAL: start clean */
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if (acse_conn->copp_state == COPP_STATE_IDLE)
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{
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COPP_LOG_ERR1 ("COPP-ERROR: Cannot process S-U-ABORT.ind (Illegal state=%d)",
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acse_conn->copp_state);
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return;
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}
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aCtx->asn1r_decode_method = ASN1_TAG_METHOD; /* Use asn1_tag method for decoding. */
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aCtx->asn1r_decode_done_fun = asn1r_done_err; /* done function = error fun */
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aCtx->asn1r_err_fun = NULL; /* set up error detected fun */
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decode_acse_conn = acse_conn; /* Save in global so asn1r_decode_asn1 (aCtx, */
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/* can fill it in. */
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/* Set the PCI to be used during P-User-Data decode. */
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expected_pdv_pci = decode_acse_conn->pciacse;
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p_user_data_is_outer = SD_FALSE; /* P-User-data IS NOT outermost constr. */
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/* CRITICAL: Init APDU ptr & len. Changed only if APDU found in msg. */
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acse_conn->apdu_ptr = NULL;
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acse_conn->apdu_len = 0;
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/* CRITICAL: Init global PDV ptr & len. Changed only if PDV found in msg.*/
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pdv_data_ptr = NULL;
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pdv_data_len = 0;
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ASN1R_TAG_ADD (aCtx, CTX|CONSTR,0,START_aru);
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ASN1R_TAG_ADD (aCtx, UNI|CONSTR,SEQ_CODE,START_arp);
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asn1r_decode_asn1 (aCtx, acse_conn->ppdu_ptr,acse_conn->ppdu_len);
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if (aCtx->asn1r_pdu_dec_err != NO_DECODE_ERR)
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{ /* DECODE FAILED */
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/* Couldn't decode ARP or ARU, so pass up as P-P-Abort.ind with */
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/* reason = unrecognized-ppdu */
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decode_arx.abort_reason = 1; /* unrecognized-ppdu. */
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COPP_LOG_ERR1 ("COPP-ERROR: ASN.1 decode of S-U-Abort.ind failed, err=%d", aCtx->asn1r_pdu_dec_err);
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COPP_LOG_DEC3 ("P-P-ABORT.ind: acse_conn_id =0x%08X user_conn_id =%4ld reason =%d",
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acse_conn, acse_conn->user_conn_id, decode_arx.abort_reason);
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u_copp_p_abort_ind (acse_conn, decode_arx.abort_reason);
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}
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else
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{ /* DECODE SUCCESSFUL */
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if (decode_arx.abort_type == COPP_U_ABORT)
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{ /* This is P-U-Abort */
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COPP_LOG_DEC2 ("P-U-ABORT.ind: acse_conn_id =0x%08X user_conn_id =%4ld",
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acse_conn, acse_conn->user_conn_id);
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COPP_LOG_DECC1 ("User data length: %d", acse_conn->apdu_len);
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COPP_LOG_DECH (acse_conn->apdu_len, acse_conn->apdu_ptr);
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u_copp_u_abort_ind (acse_conn);
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}
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else
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{ /* This is P-P-Abort */
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COPP_LOG_DEC4 ("P-P-ABORT.ind: acse_conn_id =0x%08X user_conn_id =%4ld reason =%d, event_id =%d",
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acse_conn, acse_conn->user_conn_id, decode_arx.abort_reason, decode_arx.event_id);
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u_copp_p_abort_ind (acse_conn, decode_arx.abort_reason);
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}
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}
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acse_conn->copp_state = COPP_STATE_IDLE; /* No matter what. */
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}
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/************************************************************************/
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/* START_aru */
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/************************************************************************/
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static ST_VOID START_aru (ASN1_DEC_CTXT *aCtx)
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{
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decode_arx.abort_type = COPP_U_ABORT; /* Set type to U-Abort */
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ASN1R_TAG_ADD (aCtx, CTX|CONSTR,0,START_pc_identifier_list);
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ASN1R_TAG_ADD (aCtx, APP|CONSTR,1,START_p_user_data);
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aCtx->asn1r_c_done_fun [aCtx->asn1r_msg_level] = END_aru;
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}
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/************************************************************************/
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/* START_pc_identifier_list */
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/************************************************************************/
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static ST_VOID START_pc_identifier_list (ASN1_DEC_CTXT *aCtx)
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{
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ASN1R_TAG_ADD (aCtx, UNI|CONSTR,SEQ_CODE,START_sequence);
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aCtx->asn1r_c_done_fun [aCtx->asn1r_msg_level] = END_pc_identifier_list;
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}
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/************************************************************************/
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/* START_sequence */
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/************************************************************************/
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static ST_VOID START_sequence (ASN1_DEC_CTXT *aCtx)
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{
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ASN1R_TAG_ADD (aCtx, UNI,INT_CODE,decode_pci);
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aCtx->asn1r_c_done_fun [aCtx->asn1r_msg_level] = END_sequence;
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}
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/************************************************************************/
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/* decode_pci */
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/************************************************************************/
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static ST_VOID decode_pci (ASN1_DEC_CTXT *aCtx)
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{
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ST_INT8 pci;
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if (asn1r_get_i8 (aCtx, &pci))
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{
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asn1r_set_dec_err (aCtx, ASN1E_INVALID_BOOLEAN);
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return;
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}
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ASN1R_TAG_ADD (aCtx, UNI,OBJ_ID_CODE,decode_tsn);
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}
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/************************************************************************/
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/* decode_tsn */
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/************************************************************************/
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static ST_VOID decode_tsn (ASN1_DEC_CTXT *aCtx)
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{
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MMS_OBJ_ID tsn;
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if (asn1r_get_objid (aCtx, tsn.comps,&tsn.num_comps))
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{
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asn1r_set_dec_err (aCtx, ASN1E_INVALID_BOOLEAN);
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return;
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}
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if (asn1_objidcmp (&tsn, (MMS_OBJ_ID *) &asn1_obj_id) != 0)
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{ /* TSN better be ASN1 */
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asn1r_set_dec_err (aCtx, ASN1E_INVALID_BITSTR);
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return;
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}
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}
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/************************************************************************/
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/* END_sequence */
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/************************************************************************/
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static ST_VOID END_sequence (ASN1_DEC_CTXT *aCtx)
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{
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/* May be another context. */
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ASN1R_TAG_ADD (aCtx, UNI|CONSTR,SEQ_CODE,START_sequence);
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}
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/************************************************************************/
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/* END_pc_identifier_list */
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/************************************************************************/
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static ST_VOID END_pc_identifier_list (ASN1_DEC_CTXT *aCtx)
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{
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ASN1R_TAG_ADD (aCtx, APP|CONSTR,1,START_p_user_data);
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}
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/************************************************************************/
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/* END_aru */
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/************************************************************************/
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static ST_VOID END_aru (ASN1_DEC_CTXT *aCtx)
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{
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aCtx->asn1r_decode_done_fun = NULL; /* done decoding */
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}
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/************************************************************************/
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/* START_arp */
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/************************************************************************/
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static ST_VOID START_arp (ASN1_DEC_CTXT *aCtx)
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{
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decode_arx.abort_type = COPP_P_ABORT; /* Set type to P-Abort */
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ASN1R_TAG_ADD (aCtx, CTX,0,decode_abort_reason);
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ASN1R_TAG_ADD (aCtx, CTX,1,decode_event_id);
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aCtx->asn1r_c_done_fun [aCtx->asn1r_msg_level] = END_arp;
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}
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/************************************************************************/
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/* decode_abort_reason */
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/************************************************************************/
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static ST_VOID decode_abort_reason (ASN1_DEC_CTXT *aCtx)
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{
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if (asn1r_get_i8 (aCtx, &decode_arx.abort_reason))
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{
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asn1r_set_dec_err (aCtx, ASN1E_INVALID_BOOLEAN);
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return;
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}
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ASN1R_TAG_ADD (aCtx, CTX,1,decode_event_id);
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}
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/************************************************************************/
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/* decode_event_id */
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/************************************************************************/
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static ST_VOID decode_event_id (ASN1_DEC_CTXT *aCtx)
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{
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if (asn1r_get_i8 (aCtx, &decode_arx.event_id))
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{
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asn1r_set_dec_err (aCtx, ASN1E_INVALID_BOOLEAN);
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return;
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}
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}
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/************************************************************************/
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/* END_arp */
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/************************************************************************/
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static ST_VOID END_arp (ASN1_DEC_CTXT *aCtx)
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{
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aCtx->asn1r_decode_done_fun = NULL; /* done decoding */
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}
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