Fixed bug regarding Options for Sort.
[yaz-moved-to-github.git] / server / seshigh.c
index 8fdef83..3233f05 100644 (file)
@@ -1,10 +1,69 @@
 /*
- * Copyright (c) 1995, Index Data
+ * Copyright (c) 1995-1998, Index Data
  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: seshigh.c,v $
- * Revision 1.60  1996-05-30 11:03:10  quinn
+ * Revision 1.78  1998-08-03 10:23:55  adam
+ * Fixed bug regarding Options for Sort.
+ *
+ * Revision 1.77  1998/07/20 12:38:42  adam
+ * Implemented delete result set service to server API.
+ *
+ * Revision 1.76  1998/05/27 16:57:07  adam
+ * Support for surrogate diagnostic records added for bend_fetch.
+ *
+ * Revision 1.75  1998/05/18 10:13:07  adam
+ * Fixed call to es_request handler - extra argument was passed.
+ *
+ * Revision 1.74  1998/03/31 15:13:20  adam
+ * Development towards compiled ASN.1.
+ *
+ * Revision 1.73  1998/03/31 11:07:45  adam
+ * Furhter work on UNIverse resource report.
+ * Added Extended Services handling in frontend server.
+ *
+ * Revision 1.72  1998/02/11 11:53:35  adam
+ * Changed code so that it compiles as C++.
+ *
+ * Revision 1.71  1998/02/10 11:03:57  adam
+ * Added support for extended handlers in backend server interface.
+ *
+ * Revision 1.70  1998/01/29 13:15:35  adam
+ * Implemented sort for the backend interface.
+ *
+ * Revision 1.69  1997/09/30 11:48:12  adam
+ * Fixed bug introduced by previous commit.
+ *
+ * Revision 1.68  1997/09/29 13:18:59  adam
+ * Added function, oid_ent_to_oid, to replace the function
+ * oid_getoidbyent, which is not thread safe.
+ *
+ * Revision 1.67  1997/09/17 12:10:40  adam
+ * YAZ version 1.4.
+ *
+ * Revision 1.66  1997/09/05 15:26:44  adam
+ * Added ODR encode in search and scen bend request structures.
+ * Fixed a few enums that caused trouble with C++.
+ *
+ * Revision 1.65  1997/09/01 08:53:01  adam
+ * New windows NT/95 port using MSV5.0. The test server 'ztest' was
+ * moved a separate directory. MSV5.0 project server.dsp created.
+ * As an option, the server can now operate as an NT service.
+ *
+ * Revision 1.64  1997/04/30 08:52:11  quinn
+ * Null
+ *
+ * Revision 1.63  1996/10/11  11:57:26  quinn
+ * Smallish
+ *
+ * Revision 1.62  1996/07/06  19:58:35  quinn
+ * System headerfiles gathered in yconfig
+ *
+ * Revision 1.61  1996/06/10  08:56:16  quinn
+ * Work on Summary.
+ *
+ * Revision 1.60  1996/05/30  11:03:10  quinn
  * Fixed NextresultSetPosition bug fixed.
  *
  * Revision 1.59  1996/05/14  09:26:46  quinn
  *
  */
 
+#include <yconfig.h>
 #include <stdlib.h>
 #include <stdio.h>
+#ifdef WINDOWS
+#include <process.h>
+#else
 #include <unistd.h>
+#endif
 #include <assert.h>
-#include <sys/time.h>
 
 #include <xmalloc.h>
 #include <comstack.h>
-#include <eventl.h>
-#include <session.h>
+#include "eventl.h"
+#include "session.h"
 #include <proto.h>
 #include <oid.h>
 #include <log.h>
 
 #include <backend.h>
 
-static int process_request(association *assoc);
+static int process_request(association *assoc, request *req);
 void backend_response(IOCHAN i, int event);
 static int process_response(association *assoc, request *req, Z_APDU *res);
 static Z_APDU *process_initRequest(association *assoc, request *reqb);
 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
     int *fd);
 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
-    bend_searchresult *bsrt, int *fd);
+    bend_search_rr *bsrr, int *fd);
 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
     int *fd);
 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd);
+static Z_APDU *process_sortRequest(association *assoc, request *reqb, int *fd);
 static void process_close(association *assoc, request *reqb);
+void save_referenceId (request *reqb, Z_ReferenceId *refid);
+static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
+    int *fd);
 
 static FILE *apduf = 0; /* for use in static mode */
 static statserv_options_block *control_block = 0;
 
+/* Chas: Added in from DALI */
+static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
+/* Chas: End of addition from DALI */
+
 /*
  * Create and initialize a new association-handle.
  *  channel  : iochannel for the current line.
@@ -255,16 +326,16 @@ static statserv_options_block *control_block = 0;
  */
 association *create_association(IOCHAN channel, COMSTACK link)
 {
-    association *new;
+    association *anew;
 
     if (!control_block)
        control_block = statserv_getcontrol();
-    if (!(new = xmalloc(sizeof(*new))))
+    if (!(anew = (association *)xmalloc(sizeof(*anew))))
        return 0;
-    new->client_chan = channel;
-    new->client_link = link;
-    if (!(new->decode = odr_createmem(ODR_DECODE)) ||
-       !(new->encode = odr_createmem(ODR_ENCODE)))
+    anew->client_chan = channel;
+    anew->client_link = link;
+    if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
+       !(anew->encode = odr_createmem(ODR_ENCODE)))
        return 0;
     if (*control_block->apdufile)
     {
@@ -272,7 +343,7 @@ association *create_association(IOCHAN channel, COMSTACK link)
        FILE *f;
 
        strcpy(filename, control_block->apdufile);
-       if (!(new->print = odr_createmem(ODR_PRINT)))
+       if (!(anew->print = odr_createmem(ODR_PRINT)))
            return 0;
        if (*control_block->apdufile != '-')
        {
@@ -300,19 +371,19 @@ association *create_association(IOCHAN channel, COMSTACK link)
                }
                setvbuf(f, 0, _IONBF, 0);
            }
-           odr_setprint(new->print, f);
+           odr_setprint(anew->print, f);
        }
     }
     else
-       new->print = 0;
-    new->input_buffer = 0;
-    new->input_buffer_len = 0;
-    new->backend = 0;
-    new->state = ASSOC_NEW;
-    request_initq(&new->incoming);
-    request_initq(&new->outgoing);
-    new->proto = cs_getproto(link);
-    return new;
+       anew->print = 0;
+    anew->input_buffer = 0;
+    anew->input_buffer_len = 0;
+    anew->backend = 0;
+    anew->state = ASSOC_NEW;
+    request_initq(&anew->incoming);
+    request_initq(&anew->outgoing);
+    anew->proto = cs_getproto(link);
+    return anew;
 }
 
 /*
@@ -330,15 +401,17 @@ void destroy_association(association *h)
        bend_close(h->backend);
     while (request_deq(&h->incoming));
     while (request_deq(&h->outgoing));
-   xfree(h);
+    request_delq(&h->incoming);
+    request_delq(&h->outgoing);
+    xfree(h);
 }
 
-static void do_close(association *a, int reason, char *message)
+static void do_close_req(association *a, int reason, char *message,
+                        request *req)
 {
     Z_APDU apdu;
     Z_Close *cls = zget_Close(a->encode);
-    request *req = request_get();
-
+    
     /* Purge request queue */
     while (request_deq(&a->incoming));
     while (request_deq(&a->outgoing));
@@ -361,6 +434,11 @@ static void do_close(association *a, int reason, char *message)
     a->state = ASSOC_DEAD;
 }
 
+static void do_close(association *a, int reason, char *message)
+{
+    do_close_req (a, reason, message, request_get(&a->outgoing));
+}
+
 /*
  * This is where PDUs from the client are read and the further
  * processing is initiated. Flow of control moves down through the
@@ -373,7 +451,7 @@ static void do_close(association *a, int reason, char *message)
 void ir_session(IOCHAN h, int event)
 {
     int res;
-    association *assoc = iochan_getdata(h);
+    association *assoc = (association *)iochan_getdata(h);
     COMSTACK conn = assoc->client_link;
     request *req;
 
@@ -425,13 +503,13 @@ void ir_session(IOCHAN h, int event)
                
            /* we got a complete PDU. Let's decode it */
            logf(LOG_DEBUG, "Got PDU, %d bytes", res);
-           req = request_get(); /* get a new request structure */
+           req = request_get(&assoc->incoming); /* get a new request structure */
            odr_reset(assoc->decode);
            odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
            if (!z_APDU(assoc->decode, &req->request, 0))
            {
                logf(LOG_LOG, "ODR error on incoming PDU: %s [near byte %d] ",
-                   odr_errlist[odr_geterror(assoc->decode)],
+                   odr_errmsg(odr_geterror(assoc->decode)),
                    odr_offset(assoc->decode));
                logf(LOG_LOG, "PDU dump:");
                odr_dumpBER(log_file(), assoc->input_buffer, res);
@@ -442,7 +520,7 @@ void ir_session(IOCHAN h, int event)
            if (assoc->print && !z_APDU(assoc->print, &req->request, 0))
            {
                logf(LOG_WARN, "ODR print error: %s", 
-                   odr_errlist[odr_geterror(assoc->print)]);
+                   odr_errmsg(odr_geterror(assoc->print)));
                odr_reset(assoc->print);
            }
            request_enq(&assoc->incoming, req);
@@ -451,8 +529,12 @@ void ir_session(IOCHAN h, int event)
        /* can we do something yet? */
        req = request_head(&assoc->incoming);
        if (req->state == REQUEST_IDLE)
-           if (process_request(assoc) < 0)
-               do_close(assoc, Z_Close_systemProblem, "Unknown error");
+       {
+           request_deq(&assoc->incoming);
+           if (process_request(assoc, req) < 0)
+               do_close_req(assoc, Z_Close_systemProblem, "Unknown error",
+                            req);
+       }
     }
     if (event & EVENT_OUTPUT)
     {
@@ -491,13 +573,12 @@ void ir_session(IOCHAN h, int event)
 /*
  * Initiate request processing.
  */
-static int process_request(association *assoc)
+static int process_request(association *assoc, request *req)
 {
-    request *req = request_head(&assoc->incoming);
     int fd = -1;
     Z_APDU *res;
+    int retval;
 
-    logf(LOG_DEBUG, "process_request");
     assert(req && req->state == REQUEST_IDLE);
     switch (req->request->which)
     {
@@ -509,8 +590,35 @@ static int process_request(association *assoc)
            res = process_presentRequest(assoc, req, &fd); break;
        case Z_APDU_scanRequest:
            res = process_scanRequest(assoc, req, &fd); break;
+        case Z_APDU_extendedServicesRequest:
+           if (assoc->bend_esrequest)
+               res = process_ESRequest(assoc, req, &fd);
+           else
+           {
+               logf(LOG_WARN, "Cannot handle EXTENDED SERVICES APDU");
+               return -1;
+           }
+           break;
+        case Z_APDU_sortRequest:
+           if (assoc->bend_sort)
+               res = process_sortRequest(assoc, req, &fd);
+           else
+           {
+               logf(LOG_WARN, "Cannot handle SORT APDU");
+               return -1;
+           }
+           break;
        case Z_APDU_close:
            process_close(assoc, req); return 0;
+        case Z_APDU_deleteResultSetRequest:
+           if (assoc->bend_delete)
+               res = process_deleteRequest(assoc, req, &fd);
+           else
+           {
+               logf (LOG_WARN, "Cannot handle Delete APDU");
+               return -1;
+           }
+           break;
        default:
            logf(LOG_WARN, "Bad APDU received");
            return -1;
@@ -518,12 +626,12 @@ static int process_request(association *assoc)
     if (res)
     {
        logf(LOG_DEBUG, "  result immediately available");
-       return process_response(assoc, req, res);
+       retval = process_response(assoc, req, res);
     }
     else if (fd < 0)
     {
-       logf(LOG_WARN, "   bad result");
-       return -1;
+       logf(LOG_DEBUG, "  result unavailble");
+       retval = 0;
     }
     else /* no result yet - one will be provided later */
     {
@@ -536,8 +644,9 @@ static int process_request(association *assoc)
        if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT)))
            abort();
        iochan_setdata(chan, assoc);
-       return 0;
+       retval = 0;
     }
+    return retval;
 }
 
 /*
@@ -545,7 +654,7 @@ static int process_request(association *assoc)
  */
 void backend_response(IOCHAN i, int event)
 {
-    association *assoc = iochan_getdata(i);
+    association *assoc = (association *)iochan_getdata(i);
     request *req = request_head(&assoc->incoming);
     Z_APDU *res;
     int fd;
@@ -590,32 +699,32 @@ static int process_response(association *assoc, request *req, Z_APDU *res)
     if (!z_APDU(assoc->encode, &res, 0))
     {
        logf(LOG_WARN, "ODR error when encoding response: %s",
-           odr_errlist[odr_geterror(assoc->decode)]);
+           odr_errmsg(odr_geterror(assoc->decode)));
        odr_reset(assoc->encode);
        return -1;
     }
     req->response = odr_getbuf(assoc->encode, &req->len_response,
        &req->size_response);
     odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
-    odr_reset(assoc->encode);
     if (assoc->print && !z_APDU(assoc->print, &res, 0))
     {
        logf(LOG_WARN, "ODR print error: %s", 
-           odr_errlist[odr_geterror(assoc->print)]);
+           odr_errmsg(odr_geterror(assoc->print)));
        odr_reset(assoc->print);
     }
-    /* change this when we make the backend reentrant */
-    if (req == request_head(&assoc->incoming))
-    {
-       req->state = REQUEST_IDLE;
-       request_deq(&assoc->incoming);
-    }
+    odr_reset(assoc->encode);
+    req->state = REQUEST_IDLE;
     request_enq(&assoc->outgoing, req);
     /* turn the work over to the ir_session handler */
     iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
     /* Is there more work to be done? give that to the input handler too */
+#if 1
     if (request_head(&assoc->incoming))
+    {
+       logf (LOG_DEBUG, "more work to be done");
        iochan_setevent(assoc->client_chan, EVENT_WORK);
+    }
+#endif
     return 0;
 }
 
@@ -643,8 +752,14 @@ static Z_APDU *process_initRequest(association *assoc, request *reqb)
     if (req->implementationVersion)
        logf(LOG_LOG, "Version:   %s", req->implementationVersion);
 
+    binitreq.stream = assoc->encode;
     binitreq.configname = "default-config";
     binitreq.auth = req->idAuthentication;
+    binitreq.bend_sort = NULL;
+    binitreq.bend_search = NULL;
+    binitreq.bend_present = NULL;
+    binitreq.bend_esrequest = NULL;
+    binitreq.bend_delete = NULL;
     if (!(binitres = bend_init(&binitreq)))
     {
        logf(LOG_WARN, "Bad response from backend.");
@@ -652,6 +767,17 @@ static Z_APDU *process_initRequest(association *assoc, request *reqb)
     }
 
     assoc->backend = binitres->handle;
+    if ((assoc->bend_sort = (int (*)())binitreq.bend_sort))
+       logf (LOG_DEBUG, "Sort handler installed");
+    if ((assoc->bend_search = (int (*)())binitreq.bend_search))
+       logf (LOG_DEBUG, "Search handler installed");
+    if ((assoc->bend_present = (int (*)())binitreq.bend_present))
+       logf (LOG_DEBUG, "Present handler installed");   
+    if ((assoc->bend_esrequest = (int (*)())binitreq.bend_esrequest))
+       logf (LOG_DEBUG, "ESRequest handler installed");   
+    if ((assoc->bend_delete = (int (*)())binitreq.bend_delete))
+       logf (LOG_DEBUG, "Delete handler installed");   
+    
     resp->referenceId = req->referenceId;
     *options = '\0';
     /* let's tell the client what we can do */
@@ -665,13 +791,17 @@ static Z_APDU *process_initRequest(association *assoc, request *reqb)
        ODR_MASK_SET(resp->options, Z_Options_present);
        strcat(options, " prst");
     }
-#if 0
-    if (ODR_MASK_GET(req->options, Z_Options_delSet))
+    if (ODR_MASK_GET(req->options, Z_Options_delSet) && binitreq.bend_delete)
     {
-       ODR_MASK_SET(&options, Z_Options_delSet);
+       ODR_MASK_SET(resp->options, Z_Options_delSet);
        strcat(options, " del");
     }
-#endif
+    if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
+       binitreq.bend_esrequest)
+    {
+       ODR_MASK_SET(resp->options, Z_Options_extendedServices);
+       strcat (options, " extendedServices");
+    }
     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
     {
        ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
@@ -687,7 +817,11 @@ static Z_APDU *process_initRequest(association *assoc, request *reqb)
        ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
        strcat(options, " concurop");
     }
-
+    if (ODR_MASK_GET(req->options, Z_Options_sort) && binitreq.bend_sort)
+    {
+       ODR_MASK_SET(resp->options, Z_Options_sort);
+       strcat(options, " sort");
+    }
     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
     {
        ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
@@ -728,134 +862,141 @@ static Z_APDU *process_initRequest(association *assoc, request *reqb)
  * These functions should be merged.
  */
 
+static void set_addinfo (Z_DefaultDiagFormat *dr, char *addinfo)
+{
+#if ASN_COMPILED
+    dr->which = Z_DefaultDiagFormat_v2Addinfo;
+    dr->u.v2Addinfo = addinfo ? addinfo : "";
+#else
+    dr->which = Z_DiagForm_v2AddInfo;
+    dr->addinfo = addinfo ? addinfo : "";
+#endif
+}
+
 /*
  * nonsurrogate diagnostic record.
  */
-static Z_Records *diagrec(oid_proto proto, int error, char *addinfo)
+static Z_Records *diagrec(association *assoc, int error, char *addinfo)
 {
-    static Z_Records rec;
+    int oid[OID_SIZE];
+    Z_Records *rec = (Z_Records *)odr_malloc (assoc->encode, sizeof(*rec));
     oident bib1;
-    static int err;
-#ifdef Z_95
-    static Z_DiagRec drec;
-    static Z_DefaultDiagFormat dr;
-#else
-    static Z_DiagRec dr;
-#endif
+    int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
+    Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
+    Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)odr_malloc (assoc->encode, sizeof(*dr));
 
-    bib1.proto = proto;
+    bib1.proto = assoc->proto;
     bib1.oclass = CLASS_DIAGSET;
     bib1.value = VAL_BIB1;
 
     logf(LOG_DEBUG, "Diagnostic: %d -- %s", error, addinfo ? addinfo :
        "NULL");
-    err = error;
-    rec.which = Z_Records_NSD;
+    *err = error;
+    rec->which = Z_Records_NSD;
+#if ASN_COMPILED
+    rec->u.nonSurrogateDiagnostic = dr;
+#else
 #ifdef Z_95
-    rec.u.nonSurrogateDiagnostic = &drec;
-    drec.which = Z_DiagRec_defaultFormat;
-    drec.u.defaultFormat = &dr;
+    rec->u.nonSurrogateDiagnostic = drec;
+    drec->which = Z_DiagRec_defaultFormat;
+    drec->u.defaultFormat = dr;
 #else
-    rec.u.nonSurrogateDiagnostic = &dr;
+    rec->u.nonSurrogateDiagnostic = dr;
+#endif
 #endif
-    dr.diagnosticSetId = oid_getoidbyent(&bib1);
-    dr.condition = &err;
-    dr.which = Z_DiagForm_v2AddInfo;
-    dr.addinfo = addinfo ? addinfo : "";
-    return &rec;
+    dr->diagnosticSetId = odr_oiddup (assoc->encode,
+                                      oid_ent_to_oid(&bib1, oid));
+    dr->condition = err;
+    set_addinfo (dr, addinfo);
+    return rec;
 }
 
 /*
  * surrogate diagnostic.
  */
-static Z_NamePlusRecord *surrogatediagrec(oid_proto proto, char *dbname,
-                                           int error, char *addinfo)
+static Z_NamePlusRecord *surrogatediagrec(association *assoc, char *dbname,
+                                         int error, char *addinfo)
 {
-    static Z_NamePlusRecord rec;
-    static int err;
+    int oid[OID_SIZE];
+    Z_NamePlusRecord *rec = (Z_NamePlusRecord *)odr_malloc (assoc->encode, sizeof(*rec));
+    int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
     oident bib1;
-#ifdef Z_95
-    static Z_DiagRec drec;
-    static Z_DefaultDiagFormat dr;
-#else
-    static Z_DiagRec dr;
-#endif
+    Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
+    Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)odr_malloc (assoc->encode, sizeof(*dr));
 
-    bib1.proto = proto;
+    bib1.proto = assoc->proto;
     bib1.oclass = CLASS_DIAGSET;
     bib1.value = VAL_BIB1;
 
     logf(LOG_DEBUG, "SurrogateDiagnotic: %d -- %s", error, addinfo);
-    err = error;
-    rec.databaseName = dbname;
-    rec.which = Z_NamePlusRecord_surrogateDiagnostic;
-#ifdef Z_95
-    rec.u.surrogateDiagnostic = &drec;
-    drec.which = Z_DiagRec_defaultFormat;
-    drec.u.defaultFormat = &dr;
-#else
-    rec.u.surrogateDiagnostic = &dr;
-#endif
-    dr.diagnosticSetId = oid_getoidbyent(&bib1);
-    dr.condition = &err;
-    dr.which = Z_DiagForm_v2AddInfo;
-    dr.addinfo = addinfo ? addinfo : "";
-    return &rec;
+    *err = error;
+    rec->databaseName = dbname;
+    rec->which = Z_NamePlusRecord_surrogateDiagnostic;
+    rec->u.surrogateDiagnostic = drec;
+    drec->which = Z_DiagRec_defaultFormat;
+    drec->u.defaultFormat = dr;
+    dr->diagnosticSetId = odr_oiddup (assoc->encode,
+                                      oid_ent_to_oid(&bib1, oid));
+    dr->condition = err;
+    set_addinfo (dr, addinfo);
+
+    return rec;
 }
 
 /*
  * multiple nonsurrogate diagnostics.
  */
-static Z_DiagRecs *diagrecs(oid_proto proto, int error, char *addinfo)
+static Z_DiagRecs *diagrecs(association *assoc, int error, char *addinfo)
 {
-    static Z_DiagRecs recs;
-    static int err;
+    int oid[OID_SIZE];
+    Z_DiagRecs *recs = (Z_DiagRecs *)odr_malloc (assoc->encode, sizeof(*recs));
+    int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
     oident bib1;
-#ifdef Z_95
-    static Z_DiagRec *recp[1], drec;
-    static Z_DefaultDiagFormat rec;
-#else
-    static Z_DiagRec *recp[1], rec;
-#endif
+    Z_DiagRec **recp = (Z_DiagRec **)odr_malloc (assoc->encode, sizeof(*recp));
+    Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
+    Z_DefaultDiagFormat *rec = (Z_DefaultDiagFormat *)odr_malloc (assoc->encode, sizeof(*rec));
 
     logf(LOG_DEBUG, "DiagRecs: %d -- %s", error, addinfo);
-    bib1.proto = proto;
+    bib1.proto = assoc->proto;
     bib1.oclass = CLASS_DIAGSET;
     bib1.value = VAL_BIB1;
 
-    err = error;
-    recs.num_diagRecs = 1;
-    recs.diagRecs = recp;
-#ifdef Z_95
-    recp[0] = &drec;
-    drec.which = Z_DiagRec_defaultFormat;
-    drec.u.defaultFormat = &rec;
+    *err = error;
+    recs->num_diagRecs = 1;
+    recs->diagRecs = recp;
+    recp[0] = drec;
+    drec->which = Z_DiagRec_defaultFormat;
+    drec->u.defaultFormat = rec;
+
+    rec->diagnosticSetId = odr_oiddup (assoc->encode,
+                                      oid_ent_to_oid(&bib1, oid));
+    rec->condition = err;
+
+#ifdef ASN_COMPILED
+    rec->which = Z_DefaultDiagFormat_v2Addinfo;
+    rec->u.v2Addinfo = addinfo ? addinfo : "";
 #else
-    recp[0] = &rec;
+    rec->which = Z_DiagForm_v2AddInfo;
+    rec->addinfo = addinfo ? addinfo : "";
 #endif
-    rec.diagnosticSetId = oid_getoidbyent(&bib1);
-    rec.condition = &err;
-    rec.which = Z_DiagForm_v2AddInfo;
-    rec.addinfo = addinfo ? addinfo : "";
-    return &recs;
+    return recs;
 }
 
-#define MAX_RECORDS 256
-
 static Z_Records *pack_records(association *a, char *setname, int start,
                                int *num, Z_RecordComposition *comp,
                                int *next, int *pres, oid_value format)
 {
-    int recno, total_length = 0, toget = *num;
-    static Z_Records records;
-    static Z_NamePlusRecordList reclist;
-    static Z_NamePlusRecord *list[MAX_RECORDS];
+    int oid[OID_SIZE];
+    int recno, total_length = 0, toget = *num, dumped_records = 0;
+    Z_Records *records = (Z_Records *)odr_malloc (a->encode, sizeof(*records));
+    Z_NamePlusRecordList *reclist = (Z_NamePlusRecordList *)odr_malloc (a->encode, sizeof(*reclist));
+    Z_NamePlusRecord **list = (Z_NamePlusRecord **)odr_malloc (a->encode, sizeof(*list) * toget);
     oident recform;
 
-    records.which = Z_Records_DBOSD;
-    records.u.databaseOrSurDiagnostics = &reclist;
-    reclist.num_records = 0;
-    reclist.records = list;
+    records->which = Z_Records_DBOSD;
+    records->u.databaseOrSurDiagnostics = reclist;
+    reclist->num_records = 0;
+    reclist->records = list;
     *pres = Z_PRES_SUCCESS;
     *num = 0;
     *next = 0;
@@ -863,41 +1004,46 @@ static Z_Records *pack_records(association *a, char *setname, int start,
     logf(LOG_DEBUG, "Request to pack %d+%d", start, toget);
     logf(LOG_DEBUG, "pms=%d, mrs=%d", a->preferredMessageSize,
        a->maximumRecordSize);
-    for (recno = start; reclist.num_records < toget; recno++)
+    for (recno = start; reclist->num_records < toget; recno++)
     {
        bend_fetchrequest freq;
        bend_fetchresult *fres;
        Z_NamePlusRecord *thisrec;
        Z_DatabaseRecord *thisext;
-       int this_length;
+       int this_length = 0;
 
        /*
         * we get the number of bytes allocated on the stream before any
         * allocation done by the backend - this should give us a reasonable
         * idea of the total size of the data so far.
         */
-       total_length = odr_total(a->encode);
-       if (reclist.num_records == MAX_RECORDS - 1)
-       {
-           *pres = Z_PRES_PARTIAL_2;
-           break;
-       }
+       total_length = odr_total(a->encode) - dumped_records;
        freq.setname = setname;
        freq.number = recno;
        freq.comp = comp;
        freq.format = format;
        freq.stream = a->encode;
+       freq.surrogate_flag = 0;
        if (!(fres = bend_fetch(a->backend, &freq, 0)))
        {
            *pres = Z_PRES_FAILURE;
-           return diagrec(a->proto, 2, "Backend interface problem");
+           return diagrec(a, 2, "Backend interface problem");
        }
        /* backend should be able to signal whether error is system-wide
           or only pertaining to current record */
        if (fres->errcode)
        {
-           *pres = Z_PRES_FAILURE;
-           return diagrec(a->proto, fres->errcode, fres->errstring);
+           if (!freq.surrogate_flag)
+           {
+               *pres = Z_PRES_FAILURE;
+               return diagrec(a, fres->errcode, fres->errstring);
+           }
+           reclist->records[reclist->num_records] =
+               surrogatediagrec(a, fres->basename, fres->errcode,
+                                fres->errstring);
+           reclist->num_records++;
+           *next = fres->last_in_set ? 0 : recno + 1;
+           continue;
        }
        if (fres->len >= 0)
            this_length = fres->len;
@@ -921,38 +1067,41 @@ static Z_Records *pack_records(association *a, char *setname, int start,
                if (toget > 1)
                {
                    logf(LOG_DEBUG, "  Dropped it");
-                   reclist.records[reclist.num_records] =
-                        surrogatediagrec(a->proto, fres->basename, 16, 0);
-                   reclist.num_records++;
+                   reclist->records[reclist->num_records] =
+                        surrogatediagrec(a, fres->basename, 16, 0);
+                   reclist->num_records++;
                    *next = fres->last_in_set ? 0 : recno + 1;
+                   dumped_records += this_length;
                    continue;
                }
            }
            else /* too big entirely */
            {
                logf(LOG_DEBUG, "Record > maxrcdsz");
-               reclist.records[reclist.num_records] =
-                   surrogatediagrec(a->proto, fres->basename, 17, 0);
-               reclist.num_records++;
+               reclist->records[reclist->num_records] =
+                   surrogatediagrec(a, fres->basename, 17, 0);
+               reclist->num_records++;
                *next = fres->last_in_set ? 0 : recno + 1;
+               dumped_records += this_length;
                continue;
            }
        }
-       if (!(thisrec = odr_malloc(a->encode, sizeof(*thisrec))))
+
+       if (!(thisrec = (Z_NamePlusRecord *)odr_malloc(a->encode, sizeof(*thisrec))))
            return 0;
-       if (!(thisrec->databaseName = odr_malloc(a->encode,
+       if (!(thisrec->databaseName = (char *)odr_malloc(a->encode,
            strlen(fres->basename) + 1)))
            return 0;
        strcpy(thisrec->databaseName, fres->basename);
        thisrec->which = Z_NamePlusRecord_databaseRecord;
-       if (!(thisrec->u.databaseRecord = thisext = odr_malloc(a->encode,
+       if (!(thisrec->u.databaseRecord = thisext = (Z_External *)odr_malloc(a->encode,
            sizeof(Z_DatabaseRecord))))
            return 0;
        recform.proto = a->proto;
        recform.oclass = CLASS_RECSYN;
        recform.value = fres->format;
        thisext->direct_reference = odr_oiddup(a->encode,
-           oid_getoidbyent(&recform));
+                                              oid_ent_to_oid(&recform, oid));
        thisext->indirect_reference = 0;
        thisext->descriptor = 0;
        if (fres->len < 0) /* Structured data */
@@ -963,6 +1112,8 @@ static Z_Records *pack_records(association *a, char *setname, int start,
                case VAL_GRS1: thisext->which = Z_External_grs1; break;
                case VAL_EXPLAIN: thisext->which = Z_External_explainRecord;
                    break;
+               case VAL_SUMMARY: thisext->which = Z_External_summary; break;
+               case VAL_OPAC: thisext->which = Z_External_OPAC; break;
 
                default:
                    logf(LOG_FATAL, "Unknown structured format from backend.");
@@ -979,56 +1130,90 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        }
        else if (fres->format == VAL_SUTRS) /* SUTRS is a single-ASN.1-type */
        {
-           Odr_oct *sutrs = odr_malloc(a->encode, sizeof(*sutrs));
+#if 0
+           Z_SUTRS *sutrs = (Z_SUTRS *)odr_malloc(a->encode, 1+fres->len);
+            
+           memcpy(sutrs, fres->record, fres->len);
+           sutrs[fres->len] = '\0';
+#else
+           Odr_oct *sutrs = (Odr_oct *)odr_malloc(a->encode, sizeof(*sutrs));
 
            thisext->which = Z_External_sutrs;
            thisext->u.sutrs = sutrs;
-           sutrs->buf = odr_malloc(a->encode, fres->len);
+           sutrs->buf = (unsigned char *)odr_malloc(a->encode, fres->len);
            sutrs->len = sutrs->size = fres->len;
            memcpy(sutrs->buf, fres->record, fres->len);
+#endif
        }
        else /* octet-aligned record. */
        {
            thisext->which = Z_External_octet;
-           if (!(thisext->u.octet_aligned = odr_malloc(a->encode,
+           if (!(thisext->u.octet_aligned = (Odr_oct *)odr_malloc(a->encode,
                sizeof(Odr_oct))))
                return 0;
-           if (!(thisext->u.octet_aligned->buf = odr_malloc(a->encode,
+           if (!(thisext->u.octet_aligned->buf = (unsigned char *)odr_malloc(a->encode,
                fres->len)))
                return 0;
            memcpy(thisext->u.octet_aligned->buf, fres->record, fres->len);
            thisext->u.octet_aligned->len = thisext->u.octet_aligned->size =
                fres->len;
        }
-       reclist.records[reclist.num_records] = thisrec;
-       reclist.num_records++;
+       reclist->records[reclist->num_records] = thisrec;
+       reclist->num_records++;
        *next = fres->last_in_set ? 0 : recno + 1;
     }
-    *num = reclist.num_records;
-    return &records;
+    *num = reclist->num_records;
+    return records;
 }
 
 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
     int *fd)
 {
     Z_SearchRequest *req = reqb->request->u.searchRequest;
-    bend_searchrequest bsrq;
-    bend_searchresult *bsrt;
+    bend_search_rr *bsrr = (bend_search_rr *)nmem_malloc (reqb->request_mem, sizeof(*bsrr));
 
     logf(LOG_LOG, "Got SearchRequest.");
-
-    bsrq.setname = req->resultSetName;
-    bsrq.replace_set = *req->replaceIndicator;
-    bsrq.num_bases = req->num_databaseNames;
-    bsrq.basenames = req->databaseNames;
-    bsrq.query = req->query;
-
-    if (!(bsrt = bend_search(assoc->backend, &bsrq, fd)))
-       return 0;
-    return response_searchRequest(assoc, reqb, bsrt, fd);
+    save_referenceId (reqb, req->referenceId);
+    /* store ref id in request */
+    bsrr->fd = fd;
+    bsrr->request = reqb;
+    bsrr->association = assoc;
+    if (assoc->bend_search)
+    {
+       bsrr->setname = req->resultSetName;
+       bsrr->replace_set = *req->replaceIndicator;
+       bsrr->num_bases = req->num_databaseNames;
+       bsrr->basenames = req->databaseNames;
+       bsrr->query = req->query;
+       bsrr->stream = assoc->encode;
+       bsrr->errcode = 0;
+       bsrr->hits = 0;
+       bsrr->errstring = NULL;
+       ((int (*)(void *, bend_search_rr *))(assoc->bend_search))(assoc->backend, bsrr);
+       if (!bsrr->request)
+           return 0;
+    }
+    else
+    {
+       bend_searchrequest bsrq;
+       bend_searchresult *bsrt;
+
+       bsrq.setname = req->resultSetName;
+       bsrq.replace_set = *req->replaceIndicator;
+       bsrq.num_bases = req->num_databaseNames;
+       bsrq.basenames = req->databaseNames;
+       bsrq.query = req->query;
+       bsrq.stream = assoc->encode;
+       if (!(bsrt = bend_search(assoc->backend, &bsrq, fd)))
+           return 0;
+       bsrr->hits = bsrt->hits;
+       bsrr->errcode = bsrt->errcode;
+       bsrr->errstring = bsrt->errstring;
+    }
+    return response_searchRequest(assoc, reqb, bsrr, fd);
 }
 
-bend_searchresult *bend_searchresponse(void *handle) {return 0;}
+int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
 
 /*
  * Prepare a searchresponse based on the backend results. We probably want
@@ -1038,69 +1223,73 @@ bend_searchresult *bend_searchresponse(void *handle) {return 0;}
  * event, and we'll have to get the response for ourselves.
  */
 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
-    bend_searchresult *bsrt, int *fd)
+    bend_search_rr *bsrt, int *fd)
 {
     Z_SearchRequest *req = reqb->request->u.searchRequest;
-    static Z_APDU apdu;
-    static Z_SearchResponse resp;
-    static int nulint = 0;
-    static bool_t sr = 1;
-    static int next = 0;
-    static int none = Z_RES_NONE;
-
-    apdu.which = Z_APDU_searchResponse;
-    apdu.u.searchResponse = &resp;
-    resp.referenceId = req->referenceId;
-#ifdef Z_95
-    resp.additionalSearchInfo = 0;
-    resp.otherInfo = 0;
-#endif
+    Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+    Z_SearchResponse *resp = (Z_SearchResponse *)odr_malloc (assoc->encode, sizeof(*resp));
+    int *nulint = (int *)odr_malloc (assoc->encode, sizeof(*nulint));
+    bool_t *sr = (bool_t *)odr_malloc (assoc->encode, sizeof(*sr));
+    int *next = (int *)odr_malloc (assoc->encode, sizeof(*next));
+    int *none = (int *)odr_malloc (assoc->encode, sizeof(*none));
+
+    *nulint = 0;
+    *sr = 1;
+    *next = 0;
+    *none = Z_RES_NONE;
+
+    apdu->which = Z_APDU_searchResponse;
+    apdu->u.searchResponse = resp;
+    resp->referenceId = req->referenceId;
+    resp->additionalSearchInfo = 0;
+    resp->otherInfo = 0;
     *fd = -1;
-    if (!bsrt && !(bsrt = bend_searchresponse(assoc->backend)))
+    if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
     {
        logf(LOG_FATAL, "Bad result from backend");
        return 0;
     }
     else if (bsrt->errcode)
     {
-       resp.records = diagrec(assoc->proto, bsrt->errcode,
-           bsrt->errstring);
-       resp.resultCount = &nulint;
-       resp.numberOfRecordsReturned = &nulint;
-       resp.nextResultSetPosition = &nulint;
-       resp.searchStatus = &nulint;
-       resp.resultSetStatus = &none;
-       resp.presentStatus = 0;
+       resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
+       resp->resultCount = nulint;
+       resp->numberOfRecordsReturned = nulint;
+       resp->nextResultSetPosition = nulint;
+       resp->searchStatus = nulint;
+       resp->resultSetStatus = none;
+       resp->presentStatus = 0;
     }
     else
     {
-       static int toget;
+       int *toget = (int *)odr_malloc (assoc->encode, sizeof(*toget));
+        int *presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
        Z_RecordComposition comp, *compp = 0;
-       static int presst = 0;
 
-       resp.records = 0;
-       resp.resultCount = &bsrt->hits;
+        *toget = 0;
+        *presst = 0;
+       resp->records = 0;
+       resp->resultCount = &bsrt->hits;
 
        comp.which = Z_RecordComp_simple;
        /* how many records does the user agent want, then? */
        if (bsrt->hits <= *req->smallSetUpperBound)
        {
-           toget = bsrt->hits;
+           *toget = bsrt->hits;
            if ((comp.u.simple = req->smallSetElementSetNames))
                compp = &comp;
        }
        else if (bsrt->hits < *req->largeSetLowerBound)
        {
-           toget = *req->mediumSetPresentNumber;
-           if (toget > bsrt->hits)
-               toget = bsrt->hits;
+           *toget = *req->mediumSetPresentNumber;
+           if (*toget > bsrt->hits)
+               *toget = bsrt->hits;
            if ((comp.u.simple = req->mediumSetElementSetNames))
                compp = &comp;
        }
        else
-           toget = 0;
+           *toget = 0;
 
-       if (toget && !resp.records)
+       if (*toget && !resp->records)
        {
            oident *prefformat;
            oid_value form;
@@ -1110,28 +1299,28 @@ static Z_APDU *response_searchRequest(association *assoc, request *reqb,
                form = VAL_NONE;
            else
                form = prefformat->value;
-           resp.records = pack_records(assoc, req->resultSetName, 1,
-               &toget, compp, &next, &presst, form);
-           if (!resp.records)
+           resp->records = pack_records(assoc, req->resultSetName, 1,
+               toget, compp, next, presst, form);
+           if (!resp->records)
                return 0;
-           resp.numberOfRecordsReturned = &toget;
-           resp.nextResultSetPosition = &next;
-           resp.searchStatus = &sr;
-           resp.resultSetStatus = 0;
-           resp.presentStatus = &presst;
+           resp->numberOfRecordsReturned = toget;
+           resp->nextResultSetPosition = next;
+           resp->searchStatus = sr;
+           resp->resultSetStatus = 0;
+           resp->presentStatus = presst;
        }
        else
        {
-           if (*resp.resultCount)
-               next = 1;
-           resp.numberOfRecordsReturned = &nulint;
-           resp.nextResultSetPosition = &next;
-           resp.searchStatus = &sr;
-           resp.resultSetStatus = 0;
-           resp.presentStatus = 0;
+           if (*resp->resultCount)
+               *next = 1;
+           resp->numberOfRecordsReturned = nulint;
+           resp->nextResultSetPosition = next;
+           resp->searchStatus = sr;
+           resp->resultSetStatus = 0;
+           resp->presentStatus = 0;
        }
     }
-    return &apdu;
+    return apdu;
 }
 
 /*
@@ -1153,37 +1342,63 @@ static Z_APDU *process_presentRequest(association *assoc, request *reqb,
     int *fd)
 {
     Z_PresentRequest *req = reqb->request->u.presentRequest;
-    static Z_APDU apdu;
-    static Z_PresentResponse resp;
-    static int presst, next, num;
     oident *prefformat;
     oid_value form;
-
+    Z_APDU *apdu;
+    Z_PresentResponse *resp;
+    int *presst;
+    int *next;
+    int *num;
 
     logf(LOG_LOG, "Got PresentRequest.");
-    apdu.which = Z_APDU_presentResponse;
-    apdu.u.presentResponse = &resp;
-    resp.referenceId = req->referenceId;
-#ifdef Z_95
-    resp.otherInfo = 0;
-#endif
 
     if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
        prefformat->oclass != CLASS_RECSYN)
        form = VAL_NONE;
     else
        form = prefformat->value;
-    num = *req->numberOfRecordsRequested;
-    resp.records = pack_records(assoc, req->resultSetId,
-       *req->resultSetStartPoint, &num, req->recordComposition, &next,
-       &presst, form);
-    if (!resp.records)
-       return 0;
-    resp.numberOfRecordsReturned = &num;
-    resp.presentStatus = &presst;
-    resp.nextResultSetPosition = &next;
-
-    return &apdu;
+    if (assoc->bend_present)
+    {
+       bend_present_rr *bprr = (bend_present_rr *)nmem_malloc (reqb->request_mem, sizeof(*bprr));
+       bprr->setname = req->resultSetId;
+       bprr->start = *req->resultSetStartPoint;
+       bprr->number = *req->numberOfRecordsRequested;
+       bprr->format = form;
+       bprr->comp = req->recordComposition;
+       bprr->stream = assoc->encode;
+       bprr->request = reqb;
+       bprr->association = assoc;
+       bprr->errcode = 0;
+       bprr->errstring = NULL;
+       ((int (*)(void *, bend_present_rr *))(*assoc->bend_present))(assoc->backend, bprr);
+
+       if (!bprr->request)
+           return 0;
+    }
+    apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+    resp = (Z_PresentResponse *)odr_malloc (assoc->encode, sizeof(*resp));
+    presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
+    next = (int *)odr_malloc (assoc->encode, sizeof(*next));
+    num = (int *)odr_malloc (assoc->encode, sizeof(*num));
+    *presst = 0;
+    *next = 0;
+    *num = *req->numberOfRecordsRequested;
+    
+    apdu->which = Z_APDU_presentResponse;
+    apdu->u.presentResponse = resp;
+    resp->referenceId = req->referenceId;
+    resp->otherInfo = 0;
+    
+    resp->records =
+       pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
+                    num, req->recordComposition, next, presst, form);
+    if (!resp->records)
+       return 0;
+    resp->numberOfRecordsReturned = num;
+    resp->presentStatus = presst;
+    resp->nextResultSetPosition = next;
+    
+    return apdu;
 }
 
 /*
@@ -1193,48 +1408,58 @@ static Z_APDU *process_presentRequest(association *assoc, request *reqb,
 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
 {
     Z_ScanRequest *req = reqb->request->u.scanRequest;
-    static Z_APDU apdu;
-    static Z_ScanResponse res;
-    static int scanStatus = Z_Scan_failure;
-    static int numberOfEntriesReturned = 0;
+    Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+    Z_ScanResponse *res = (Z_ScanResponse *)odr_malloc (assoc->encode, sizeof(*res));
+    int *scanStatus = (int *)odr_malloc (assoc->encode, sizeof(*scanStatus));
+    int *numberOfEntriesReturned =
+         (int *)odr_malloc (assoc->encode, sizeof(*numberOfEntriesReturned));
+    Z_ListEntries *ents = (Z_ListEntries *)odr_malloc (assoc->encode, sizeof(*ents));
+    Z_DiagRecs *diagrecs_p = NULL;
     oident *attent;
-    static Z_ListEntries ents;
-#define SCAN_MAX_ENTRIES 200
-    static Z_Entry *tab[SCAN_MAX_ENTRIES];
     bend_scanrequest srq;
     bend_scanresult *srs;
     oident *attset;
 
-    logf(LOG_LOG, "Got scanrequest");
-    apdu.which = Z_APDU_scanResponse;
-    apdu.u.scanResponse = &res;
-    res.referenceId = req->referenceId;
-    res.stepSize = 0;
-    res.scanStatus = &scanStatus;
-    res.numberOfEntriesReturned = &numberOfEntriesReturned;
-    res.positionOfTerm = 0;
-    res.entries = &ents;
-    ents.which = Z_ListEntries_nonSurrogateDiagnostics;
-    res.attributeSet = 0;
-#ifdef Z_95
-    res.otherInfo = 0;
+    logf(LOG_LOG, "Got ScanRequest");
+    *scanStatus = Z_Scan_failure;
+    *numberOfEntriesReturned = 0;
+
+    apdu->which = Z_APDU_scanResponse;
+    apdu->u.scanResponse = res;
+    res->referenceId = req->referenceId;
+    res->stepSize = 0;
+    res->scanStatus = scanStatus;
+    res->numberOfEntriesReturned = numberOfEntriesReturned;
+    res->positionOfTerm = 0;
+    res->entries = ents;
+#if ASN_COMPILED
+    ents->num_entries = 0;
+    ents->entries = NULL;
+    ents->num_nonsurrogateDiagnostics = 0;
+    ents->nonsurrogateDiagnostics = NULL;
+#else
+    ents->which = Z_ListEntries_entries;
 #endif
+    res->attributeSet = 0;
+    res->otherInfo = 0;
 
     if (req->attributeSet && (!(attent = oid_getentbyoid(req->attributeSet)) ||
-       attent->oclass != CLASS_ATTSET || attent->value != VAL_BIB1))
-       ents.u.nonSurrogateDiagnostics = diagrecs(assoc->proto, 121, 0);
+                             attent->oclass != CLASS_ATTSET
+                             || attent->value != VAL_BIB1))
+       diagrecs_p = diagrecs(assoc, 121, 0);
     else if (req->stepSize && *req->stepSize > 0)
-       ents.u.nonSurrogateDiagnostics = diagrecs(assoc->proto, 205, 0);
+       diagrecs_p = diagrecs(assoc, 205, 0);
     else
     {
        if (req->termListAndStartPoint->term->which == Z_Term_general)
            logf(LOG_DEBUG, " term: '%.*s'",
-               req->termListAndStartPoint->term->u.general->len,
-               req->termListAndStartPoint->term->u.general->buf);
+                req->termListAndStartPoint->term->u.general->len,
+                req->termListAndStartPoint->term->u.general->buf);
        srq.num_bases = req->num_databaseNames;
        srq.basenames = req->databaseNames;
        srq.num_entries = *req->numberOfTermsRequested;
        srq.term = req->termListAndStartPoint;
+       srq.stream = assoc->encode;
        if (!(attset = oid_getentbyoid(req->attributeSet)) ||
            attset->oclass != CLASS_RECSYN)
            srq.attributeset = VAL_NONE;
@@ -1243,59 +1468,168 @@ static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
        srq.term_position = req->preferredPositionInResponse ?
            *req->preferredPositionInResponse : 1;
        if (!(srs = bend_scan(assoc->backend, &srq, 0)))
-           ents.u.nonSurrogateDiagnostics = diagrecs(assoc->proto, 2, 0);
+           diagrecs_p = diagrecs(assoc, 2, 0);
        else if (srs->errcode)
-           ents.u.nonSurrogateDiagnostics = diagrecs(assoc->proto,
-               srs->errcode, srs->errstring);
+           diagrecs_p = diagrecs(assoc, srs->errcode, srs->errstring);
        else
        {
            int i;
-           static Z_Entries list;
-
+#ifdef ASN_COMPILED
+#else
+           Z_Entries *list = (Z_Entries *)
+               odr_malloc (assoc->encode, sizeof(*list));
+#endif
+            Z_Entry **tab = (Z_Entry **)
+               odr_malloc (assoc->encode, sizeof(*tab) * srs->num_entries);
+           
            if (srs->status == BEND_SCAN_PARTIAL)
-               scanStatus = Z_Scan_partial_5;
+               *scanStatus = Z_Scan_partial_5;
            else
-               scanStatus = Z_Scan_success;
-           ents.which = Z_ListEntries_entries;
-           ents.u.entries = &list;
-           list.entries = tab;
+               *scanStatus = Z_Scan_success;
+#ifdef ASN_COMPILED
+           ents->entries = tab;
+           ents->num_entries = srs->num_entries;
+           res->numberOfEntriesReturned = &ents->num_entries;      
+#else
+           ents->u.entries = list;
+           list->entries = tab;
+           list->num_entries = srs->num_entries;
+           res->numberOfEntriesReturned = &list->num_entries;
+#endif
+           res->positionOfTerm = &srs->term_position;
            for (i = 0; i < srs->num_entries; i++)
            {
                Z_Entry *e;
                Z_TermInfo *t;
                Odr_oct *o;
-
-               if (i >= SCAN_MAX_ENTRIES)
-               {
-                   scanStatus = Z_Scan_partial_4;
-                   break;
-               }
-               list.entries[i] = e = odr_malloc(assoc->encode, sizeof(*e));
+               
+               tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
                e->which = Z_Entry_termInfo;
-               e->u.termInfo = t = odr_malloc(assoc->encode, sizeof(*t));
+               e->u.termInfo = t = (Z_TermInfo *)odr_malloc(assoc->encode, sizeof(*t));
                t->suggestedAttributes = 0;
                t->displayTerm = 0;
                t->alternativeTerm = 0;
                t->byAttributes = 0;
                t->otherTermInfo = 0;
                t->globalOccurrences = &srs->entries[i].occurrences;
-               t->term = odr_malloc(assoc->encode, sizeof(*t->term));
+               t->term = (Z_Term *)odr_malloc(assoc->encode, sizeof(*t->term));
                t->term->which = Z_Term_general;
-               t->term->u.general = o = odr_malloc(assoc->encode,
+               t->term->u.general = o = (Odr_oct *)odr_malloc(assoc->encode,
                    sizeof(Odr_oct));
-               o->buf = odr_malloc(assoc->encode, o->len = o->size =
+               o->buf = (unsigned char *)odr_malloc(assoc->encode, o->len = o->size =
                    strlen(srs->entries[i].term));
                memcpy(o->buf, srs->entries[i].term, o->len);
                logf(LOG_DEBUG, "  term #%d: '%s' (%d)", i,
                    srs->entries[i].term, srs->entries[i].occurrences);
            }
-           list.num_entries = i;
-           res.numberOfEntriesReturned = &list.num_entries;
-           res.positionOfTerm = &srs->term_position;
        }
     }
+    if (diagrecs_p)
+    {
+#ifdef ASN_COMPILED
+       ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
+       ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
+#else
+       ents->u.nonSurrogateDiagnostics = diagrecs_p;
+       ents->which = Z_ListEntries_nonSurrogateDiagnostics;
+#endif
+    }
+    return apdu;
+}
+
+static Z_APDU *process_sortRequest(association *assoc, request *reqb,
+    int *fd)
+{
+    Z_SortRequest *req = reqb->request->u.sortRequest;
+    Z_SortResponse *res = (Z_SortResponse *)odr_malloc (assoc->encode, sizeof(*res));
+    bend_sort_rr *bsrr = (bend_sort_rr *)odr_malloc (assoc->encode, sizeof(*bsrr));
+
+    Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+
+    logf(LOG_LOG, "Got SortRequest.");
+
+#ifdef ASN_COMPILED
+    bsrr->num_input_setnames = req->num_inputResultSetNames;
+    bsrr->input_setnames = req->inputResultSetNames;
+#else
+    bsrr->num_input_setnames = req->inputResultSetNames->num_strings;
+    bsrr->input_setnames = req->inputResultSetNames->strings;
+#endif
+    bsrr->output_setname = req->sortedResultSetName;
+    bsrr->sort_sequence = req->sortSequence;
+    bsrr->stream = assoc->encode;
+
+    bsrr->sort_status = Z_SortStatus_failure;
+    bsrr->errcode = 0;
+    bsrr->errstring = 0;
 
-    return &apdu;
+    ((int (*)(void *, bend_sort_rr *))(*assoc->bend_sort))(assoc->backend, bsrr);
+
+    res->referenceId = req->referenceId;
+    res->sortStatus = (int *)odr_malloc (assoc->encode, sizeof(*res->sortStatus));
+    *res->sortStatus = bsrr->sort_status;
+    res->resultSetStatus = 0;
+    if (bsrr->errcode)
+    {
+       Z_DiagRecs *dr = diagrecs (assoc, bsrr->errcode, bsrr->errstring);
+#ifdef ASN_COMPILED
+       res->diagnostics = dr->diagRecs;
+       res->num_diagnostics = dr->num_diagRecs;
+#else
+       res->diagnostics = dr;
+#endif
+    }
+    else
+    {
+#ifdef ASN_COMPILED
+       res->num_diagnostics = 0;
+#endif
+       res->diagnostics = 0;
+    }
+    res->otherInfo = 0;
+
+    apdu->which = Z_APDU_sortResponse;
+    apdu->u.sortResponse = res;
+    return apdu;
+}
+
+static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
+    int *fd)
+{
+    Z_DeleteResultSetRequest *req = reqb->request->u.deleteResultSetRequest;
+    Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
+       odr_malloc (assoc->encode, sizeof(*res));
+    bend_delete_rr *bdrr = (bend_delete_rr *)
+       odr_malloc (assoc->encode, sizeof(*bdrr));
+    Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+
+    logf(LOG_LOG, "Got DeleteRequest.");
+
+    bdrr->num_setnames = req->num_ids;
+    bdrr->setnames = req->resultSetList;
+    bdrr->stream = assoc->encode;
+    bdrr->function = *req->deleteFunction;
+
+    ((int (*)(void *, bend_delete_rr *))
+     (*assoc->bend_delete))(assoc->backend, bdrr);
+    
+    res->referenceId = req->referenceId;
+
+    res->deleteOperationStatus = (int *)
+       odr_malloc (assoc->encode, sizeof(*res->deleteOperationStatus));
+    *res->deleteOperationStatus = bdrr->delete_status;
+
+    res->num_statuses = 0;
+    res->deleteListStatuses = 0;
+    res->numberNotDeleted = 0;
+    res->num_bulkStatuses = 0;
+    res->bulkStatuses = 0;
+    res->deleteMessage = 0;
+    res->otherInfo = 0;
+
+    apdu->which = Z_APDU_deleteResultSetResponse;
+    apdu->u.deleteResultSetResponse = res;
+    return apdu;
 }
 
 static void process_close(association *assoc, request *reqb)
@@ -1315,10 +1649,121 @@ static void process_close(association *assoc, request *reqb)
        "unspecified"
     };
 
-    logf(LOG_LOG, "Got close, reason %s, message %s",
+    logf(LOG_LOG, "Got Close, reason %s, message %s",
        reasons[*req->closeReason], req->diagnosticInformation ?
        req->diagnosticInformation : "NULL");
     if (assoc->version < 3) /* to make do_force respond with close */
        assoc->version = 3;
-    do_close(assoc, Z_Close_finished, "Association terminated by client");
+    do_close_req(assoc, Z_Close_finished, "Association terminated by client",
+                reqb);
+}
+
+void save_referenceId (request *reqb, Z_ReferenceId *refid)
+{
+    if (refid)
+    {
+       reqb->len_refid = refid->len;
+       reqb->refid = (char *)nmem_malloc (reqb->request_mem, refid->len);
+       memcpy (reqb->refid, refid->buf, refid->len);
+    }
+    else
+    {
+       reqb->len_refid = 0;
+       reqb->refid = NULL;
+    }
+}
+
+void bend_request_send (bend_association a, bend_request req, Z_APDU *res)
+{
+    process_response (a, req, res);
+}
+
+bend_request bend_request_mk (bend_association a)
+{
+    request *nreq = request_get (&a->outgoing);
+    nreq->request_mem = nmem_create ();
+    return nreq;
+}
+
+Z_ReferenceId *bend_request_getid (ODR odr, bend_request req)
+{
+    Z_ReferenceId *id;
+    if (!req->refid)
+       return 0;
+    id = (Odr_oct *)odr_malloc (odr, sizeof(*odr));
+    id->buf = (unsigned char *)odr_malloc (odr, req->len_refid);
+    id->len = id->size = req->len_refid;
+    memcpy (id->buf, req->refid, req->len_refid);
+    return id;
+}
+
+void bend_request_destroy (bend_request *req)
+{
+    nmem_destroy((*req)->request_mem);
+    request_release(*req);
+    *req = NULL;
+}
+
+int bend_backend_respond (bend_association a, bend_request req)
+{
+    return process_request (a, req);
+}
+
+void bend_request_setdata(bend_request r, void *p)
+{
+    r->clientData = p;
+}
+
+void *bend_request_getdata(bend_request r)
+{
+    return r->clientData;
+}
+
+/* Chas: Added in from DALI */
+static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
+{
+    bend_esrequest_rr esrequest;
+
+    Z_ExtendedServicesRequest *req = reqb->request->u.extendedServicesRequest;
+    Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
+
+    Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
+
+    logf(LOG_DEBUG,"inside Process esRequest");
+
+    esrequest.esr = reqb->request->u.extendedServicesRequest;
+    esrequest.stream = assoc->encode;
+    esrequest.errcode = 0;
+    esrequest.errstring = NULL;
+    esrequest.request = reqb;
+    esrequest.association = assoc;
+    
+    ((int (*)(void *, bend_esrequest_rr *))(*assoc->bend_esrequest))(assoc->backend,
+                                                                  &esrequest);
+    
+    /* If the response is being delayed, return NULL */
+    if (esrequest.request == NULL)
+        return(NULL);
+
+    resp->referenceId = req->referenceId;
+
+    if ( esrequest.errcode == 0 )
+    {
+        /* Backend service indicates request will be processed */
+        logf(LOG_DEBUG,"Request will be processed...Good !");
+        *resp->operationStatus = Z_ExtendedServicesResponse_done;
+    }
+    else
+    {
+        /* Backend indicates error, request will not be processed */
+        logf(LOG_DEBUG,"Request will not be processed...BAD !");
+        *resp->operationStatus = Z_ExtendedServicesResponse_failure;
+    }
+    /* Do something with the members of bend_extendedservice */
+
+    logf(LOG_DEBUG,"Send the result apdu");
+
+    return apdu;
 }
+
+/* Chas: End of addition from DALI */