usr/src/contrib/isode/psap2-lpp/psaprespond.c

/* psaprespond.c - PPM: responder */

#ifndef lint
static char *rcsid = "$Header: /f/osi/psap2-lpp/RCS/psaprespond.c,v 7.2 91/02/22 09:38:13 mrose Interim $";
#endif

/*
 * $Header: /f/osi/psap2-lpp/RCS/psaprespond.c,v 7.2 91/02/22 09:38:13 mrose Interim $
 *
 * Contributed by The Wollongong Group, Inc.
 *
 *
 * $Log:        psaprespond.c,v $
 * Revision 7.2  91/02/22  09:38:13  mrose
 * Interim 6.8
 *
 * Revision 7.1  90/07/01  21:05:32  mrose
 * pepsy
 *
 * Revision 7.0  89/11/23  22:15:58  mrose
 * Release 6.0
 *
 */

/*
 *                                NOTICE
 *
 *    Acquisition, use, and distribution of this module and related
 *    materials are subject to the restrictions of a license agreement.
 *    Consult the Preface in the User's Manual for the full terms of
 *    this agreement.
 *
 */


/* LINTLIBRARY */

#include <stdio.h>
#define LPP
#include "PS-types.h"
#include "ppkt.h"
#include "tailor.h"


#define AC_ASN          "acse pci version 1"

/* \f   P-CONNECT.INDICATION */

int     PInit (vecp, vec, ps, pi)
int     vecp;
char  **vec;
struct PSAPstart *ps;
struct PSAPindication *pi;
{
    register struct psapblk *pb;

    isodetailor (NULLCP, 0);

    if (vecp < 2)
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "bad initialization vector");
    missingP (vec);
    missingP (ps);
    missingP (pi);

    if ((pb = newpblk ()) == NULL)
        return psaplose (pi, PC_CONGEST, NULLCP, "out of memory");

    vec++, vecp--;
    switch (*vec[0]) {
        case PT_TCP:
            if (tcprestore (pb, vec[0] + 1, pi) == NOTOK)
                goto out;
            break;

        case PT_UDP:
            if (udprestore (pb, vec[0] + 1, pi) == NOTOK)
                goto out;
            break;

        default:
            (void) psaplose (pi, PC_PARAMETER, NULLCP,
                             "unknown transport type: 0x%x (%c)",
                             *vec[0], *vec[0]);
            goto out;
    }
    *vec = NULL;
    if (PInitAux (pb, ++vec, --vecp, ps, pi) == NOTOK)
        goto out;

    return OK;

out: ;
    freepblk (pb);

    return NOTOK;
}

/* \f */

/* ARGSUSED */

static int  PInitAux (pb, vec, vecp, ps, pi)
register struct psapblk *pb;
char  **vec;
int     vecp;
struct PSAPstart *ps;
struct PSAPindication *pi;
{
    int     result;
    PE      pe;
    OID     oid;
    register struct PSAPcontext *pp;
    struct type_PS_PDUs *pdu;
    register struct type_PS_ConnectRequest__PDU *cr;
    register struct TSAPaddr *ta;

    if ((pe = ps2pe (pb -> pb_stream)) == NULLPE)
        return pslose (pi, pb -> pb_stream -> ps_errno);

    pdu = NULL;
    oid = NULLOID;
    result = decode_PS_PDUs (pe, 1, NULLIP, NULLVP, &pdu);

#ifdef  DEBUG
    if (result == OK && (psap2_log -> ll_events & LLOG_PDUS))
        pvpdu (psap2_log, print_PS_PDUs_P, pe, "PDU", 1);
#endif

    pe_free (pe);

    if (result == NOTOK) {
        (void) ppktlose (pb, pi, PC_UNRECOGNIZED, NULLRF, NULLCP,
                         "error decoding PDU: %s", PY_pepy);
        goto out;
    }

    if (pdu -> offset != type_PS_PDUs_connectRequest) {
        /* this works 'cause the "reference" is always the FIRST element */
        if (pdu -> offset != type_PS_PDUs_abort)
            result = ppktlose (pb, pi, PC_SESSION,
                               pdu -> un.connectResponse -> reference, NULLCP,
                               "unexpected PDU %d", pdu -> offset);
        else
            result = psaplose (pi, PC_SESSION, NULLCP, "unexpected PDU %d",
                               pdu -> offset);
        goto out;
    }

    cr = pdu -> un.connectRequest;

    if ((oid = ode2oid (AC_ASN)) == NULL) {
        result = ppktlose (pb, pi, PC_PARAMETER, cr -> reference, NULLCP,
                           "%s: unknown", AC_ASN);
        goto out;
    }
    if ((oid = oid_cpy (oid)) == NULL) {
        result = ppktlose (pb, pi, PC_CONGEST, cr -> reference, NULLCP,
                           NULLCP);
        goto out;
    }

    pb -> pb_reference = cr -> reference, cr -> reference = NULL;
    pe = cr -> user__data, cr -> user__data = NULLPE;

/* should check version number here... */

    bzero ((char *) ps, sizeof *ps);

    ps -> ps_sd = pb -> pb_fd;

    ta = &ps -> ps_calling.pa_addr.sa_addr;
    ta -> ta_naddr = 1;
    ta -> ta_addrs[0] = pb -> pb_initiating;    /* struct copy */
    pdu2sel (ps -> ps_calling.pa_selector,
             &ps -> ps_calling.pa_selectlen,
             sizeof ps -> ps_calling.pa_selector,
             cr -> calling);

    ta = &pb -> pb_responding.pa_addr.sa_addr;
    ta -> ta_naddr = 1;
    ta -> ta_addrs[0] = pb -> pb_initiating;    /* struct copy */
    pdu2sel (pb -> pb_responding.pa_selector,
             &pb -> pb_responding.pa_selectlen,
             sizeof pb -> pb_responding.pa_selector,
             cr -> called);
    ps -> ps_called = pb -> pb_responding;      /* struct copy */

    ps -> ps_ctxlist.pc_nctx = 2;
    pp = ps -> ps_ctxlist.pc_ctx;

    pp -> pc_id = PCI_ROSE;
    pp -> pc_asn = cr -> asn;
    pp -> pc_result = PC_ACCEPT;
    cr -> asn = NULLOID, pp++;

    pp -> pc_id = PCI_ACSE;
    pp -> pc_asn = oid, oid = NULLOID;
    pp -> pc_result = PC_ACCEPT;

    ps -> ps_defctxresult = PC_ACCEPT;

    ps -> ps_prequirements = PR_KERNEL;
    ps -> ps_srequirements = SR_DUPLEX;

    ps -> ps_isn = SERIAL_NONE;

    ps -> ps_connect = *pdu2ref (pb -> pb_reference);   /* struct copy */

    ps -> ps_qos.qos_reliability = pb -> pb_reliability;
    ps -> ps_qos.qos_sversion = 2;

    (ps -> ps_info[0] = pe) -> pe_context = PCI_ACSE;
    ps -> ps_ninfo = 1;

    result = OK;

out: ;
    if (pdu)
        free_PS_PDUs (pdu);
    if (oid)
        oid_free (oid);

    return result;
}

/* \f   P-CONNECT.RESPONSE */

int     PConnResponse (sd, status, responding, ctxlist, defctxresult,
        prequirements, srequirements, isn, settings, ref, data, ndata, pi)
int     sd;
struct PSAPaddr *responding;
int     status,
        prequirements,
        srequirements,
        settings,
        ndata;
long    isn;
struct PSAPctxlist *ctxlist;
int     defctxresult;
struct SSAPref *ref;
PE     *data;
struct PSAPindication *pi;
{
    int     result;
    PE      pe;
    PS      ps;
    register struct psapblk *pb;
    register struct type_PS_ConnectResponse__PDU *pdu;

    if ((pb = findpblk (sd)) == NULL || (pb -> pb_flags & PB_CONN))
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "invalid presentation descriptor");
#ifdef  notdef
    missingP (responding);
#endif
    switch (status) {
        case PC_ACCEPT:
        case PC_REJECTED:
            break;

        default:
            return psaplose (pi, PC_PARAMETER, NULLCP,
                             "bad value for status parameter");
    }
    if (ctxlist != NULL) {
        register int    i;
        register struct PSAPcontext *pp;

        i = ctxlist -> pc_nctx - 1;
        for (pp = ctxlist -> pc_ctx; i >= 0; i--, pp++) {
            switch (pp -> pc_id) {
                case PCI_ACSE:
                case PCI_ROSE:
                    break;

                default:
                    return psaplose (pi, PC_PARAMETER, NULLCP,
                                     "illegal value for PCI (%d)",
                                     pp -> pc_id);
            }
            if (pp -> pc_result != PC_ACCEPT)
                return psaplose (pi, PC_PARAMETER, NULLCP,
                                 "must accept PCI %d", pp -> pc_id);
        }
    }
    if (defctxresult != PC_ACCEPT)
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "must accept non-existant default context");
    if (prequirements != PR_KERNEL)
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "presentation requirements settings not supported");
    if (srequirements != SR_DUPLEX)
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "session requirements settings not supported");
    if (isn != SERIAL_NONE)
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "initial serial number not permitted");
    if (settings != 0)  /* not really an accurate test... */
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "initial token settings not permitted");
    missingP (ref);
    if (ref -> sr_ulen > SREF_USER_SIZE
            || ref -> sr_clen > SREF_COMM_SIZE
            || ref -> sr_alen > SREF_ADDT_SIZE
            || ref -> sr_vlen > 0)
        return psaplose (pi, PC_PARAMETER, NULLCP, "bad format for reference");
    if (data == NULL || ndata <= 0 || data[0] == NULLPE || ndata > NPDATA_PS)
        return psaplose (pi, PC_PARAMETER, NULLCP, "bad initial user data");
    if (data[0] -> pe_context != PCI_ACSE)
        return psaplose (pi, PC_PARAMETER, NULLCP,
                         "wrong context for initial user data");
    missingP (pi);

    if ((pdu = (struct type_PS_ConnectResponse__PDU *) malloc (sizeof *pdu))
            == NULL) {
no_mem: ;
        (void) psaplose (pi, PC_CONGEST, NULLCP, "out of memory");
        goto out2;
    }

    pdu -> reference = pb -> pb_reliability == LOW_QUALITY ? pb -> pb_reference
                                                           : NULLRF;

    if (responding && responding -> pa_selectlen > 0) {
        if ((pdu -> responding = str2qb (responding -> pa_selector,
                                     responding -> pa_selectlen, 1)) == NULL)
        goto no_mem;
    }
    else
        pdu -> responding = NULL;

    if (status == PC_REJECTED) {
        if ((pdu -> reason = (struct type_PS_Rejection__reason *)
                        malloc (sizeof (struct type_PS_Rejection__reason)))
                == NULL)
            goto no_mem;

        pdu -> reason -> parm =
                            int_PS_Rejection__reason_rejected__by__responder;
    }
    else
        pdu -> reason = NULL;

    pdu -> user__data = data[0];

    pe = NULLPE;
    result = encode_PS_ConnectResponse__PDU (&pe, 1, 0, NULLCP, pdu);

    pdu -> reference = NULL;
    pdu -> user__data = NULLPE;
    free_PS_ConnectResponse__PDU (pdu);
    pdu = NULL;

    if (result == NOTOK) {
        (void) psaplose (pi, PC_CONGEST, NULLCP, "error encoding PDU: %s",
                         PY_pepy);
        goto out2;
    }

    PLOGP (psap2_log,PS_PDUs, pe, "ConnectResponse-PDU", 0);

    result = pe2ps (ps = pb -> pb_stream, pe);

    pe_free (pe);

    if (result == NOTOK) {
        result = pslose (pi, ps -> ps_errno);
        goto out1;
    }

    if (status == PC_ACCEPT)
        pb -> pb_flags |= PB_CONN;
    else
        freepblk (pb);

    return OK;

out2: ;
    if (pdu) {
        pdu -> reference = NULL;
        pdu -> user__data = NULLPE;
        free_PS_ConnectResponse__PDU (pdu);
    }
    if (pe)
        pe_free (pe);

out1: ;
    freepblk (pb);

    return NOTOK;
}