Beta 3
[yaz-moved-to-github.git] / server / seshigh.c
index 6811402..0fd64e9 100644 (file)
@@ -4,7 +4,38 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: seshigh.c,v $
- * Revision 1.35  1995-06-15 07:45:14  quinn
+ * Revision 1.45  1995-08-21 09:11:00  quinn
+ * Smallish fixes to suppport new formats.
+ *
+ * Revision 1.44  1995/08/17  12:45:25  quinn
+ * Fixed minor problems with GRS-1. Added support in c&s.
+ *
+ * Revision 1.43  1995/08/15  12:00:31  quinn
+ * Updated External
+ *
+ * Revision 1.42  1995/08/15  11:16:50  quinn
+ * CV:e ----------------------------------------------------------------------
+ * CV:e ----------------------------------------------------------------------
+ *
+ * Revision 1.41  1995/08/02  10:23:06  quinn
+ * Smallish
+ *
+ * Revision 1.40  1995/07/31  14:34:26  quinn
+ * Fixed bug in process_searchResponse (numberOfRecordsReturned).
+ *
+ * Revision 1.39  1995/06/27  13:21:00  quinn
+ * SUTRS support
+ *
+ * Revision 1.38  1995/06/19  12:39:11  quinn
+ * Fixed bug in timeout code. Added BER dumper.
+ *
+ * Revision 1.37  1995/06/16  13:16:14  quinn
+ * Fixed Defaultdiagformat.
+ *
+ * Revision 1.36  1995/06/16  10:31:36  quinn
+ * Added session timeout.
+ *
+ * Revision 1.35  1995/06/15  07:45:14  quinn
  * Moving to v3.
  *
  * Revision 1.34  1995/06/14  15:26:46  quinn
@@ -277,6 +308,14 @@ void ir_session(IOCHAN h, int event)
     request *req;
 
     assert(h && conn && assoc);
+    if (event == EVENT_TIMEOUT)
+    {
+       logf(LOG_LOG, "Timeout - closing connection.");
+       cs_close(conn);
+       destroy_association(assoc);
+       iochan_destroy(h);
+       return;
+    }
     if (event & EVENT_INPUT || event & EVENT_WORK) /* input */
     {
        if (event & EVENT_INPUT)
@@ -313,8 +352,10 @@ void ir_session(IOCHAN h, int event)
            odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
            if (!z_APDU(assoc->decode, &req->request, 0))
            {
-               logf(LOG_WARN, "ODR error: %s",
+               logf(LOG_LOG, "ODR error on incoming PDU: %s",
                    odr_errlist[odr_geterror(assoc->decode)]);
+               logf(LOG_LOG, "PDU dump:");
+               odr_dumpBER(log_file(), assoc->input_buffer, res);
                cs_close(conn);
                destroy_association(assoc);
                iochan_destroy(h);
@@ -609,6 +650,7 @@ static Z_Records *diagrec(oid_proto proto, int error, char *addinfo)
 #endif
     dr.diagnosticSetId = oid_getoidbyent(&bib1);
     dr.condition = &err;
+    dr.which = Z_DiagForm_v2AddInfo;
     dr.addinfo = addinfo ? addinfo : "";
     return &rec;
 }
@@ -646,6 +688,7 @@ static Z_NamePlusRecord *surrogatediagrec(oid_proto proto, char *dbname,
 #endif
     dr.diagnosticSetId = oid_getoidbyent(&bib1);
     dr.condition = &err;
+    dr.which = Z_DiagForm_v2AddInfo;
     dr.addinfo = addinfo ? addinfo : "";
     return &rec;
 }
@@ -682,6 +725,7 @@ static Z_DiagRecs *diagrecs(oid_proto proto, int error, char *addinfo)
 #endif
     rec.diagnosticSetId = oid_getoidbyent(&bib1);
     rec.condition = &err;
+    rec.which = Z_DiagForm_v2AddInfo;
     rec.addinfo = addinfo ? addinfo : "";
     return &recs;
 }
@@ -690,14 +734,13 @@ static Z_DiagRecs *diagrecs(oid_proto proto, int error, char *addinfo)
 
 static Z_Records *pack_records(association *a, char *setname, int start,
                                int *num, Z_ElementSetNames *esn,
-                               int *next, int *pres)
+                               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];
     oident recform;
-    Odr_oid *oid;
 
     records.which = Z_Records_DBOSD;
     records.u.databaseOrSurDiagnostics = &reclist;
@@ -707,12 +750,6 @@ static Z_Records *pack_records(association *a, char *setname, int start,
     *num = 0;
     *next = 0;
 
-    recform.proto = a->proto;
-    recform.class = CLASS_RECSYN;
-    recform.value = VAL_USMARC;
-    if (!(oid = odr_oiddup(a->encode, oid_getoidbyent(&recform))))
-       return 0;
-
     logf(LOG_DEBUG, "Request to pack %d+%d", start, toget);
     logf(LOG_DEBUG, "pms=%d, mrs=%d", a->preferredMessageSize,
        a->maximumRecordSize);
@@ -722,7 +759,14 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        bend_fetchresult *fres;
        Z_NamePlusRecord *thisrec;
        Z_DatabaseRecord *thisext;
+       int this_length;
 
+       /*
+        * 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;
@@ -730,6 +774,8 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        }
        freq.setname = setname;
        freq.number = recno;
+       freq.format = format;
+       freq.stream = a->encode;
        if (!(fres = bend_fetch(a->backend, &freq, 0)))
        {
            *pres = Z_PRES_FAILURE;
@@ -742,19 +788,23 @@ static Z_Records *pack_records(association *a, char *setname, int start,
            *pres = Z_PRES_FAILURE;
            return diagrec(a->proto, fres->errcode, fres->errstring);
        }
+       if (fres->len >= 0)
+           this_length = fres->len;
+       else
+           this_length = odr_total(a->encode) - total_length;
        logf(LOG_DEBUG, "  fetched record, len=%d, total=%d",
-           fres->len, total_length);
-       if (fres->len + total_length > a->preferredMessageSize)
+           this_length, total_length);
+       if (this_length + total_length > a->preferredMessageSize)
        {
            /* record is small enough, really */
-           if (fres->len <= a->preferredMessageSize)
+           if (this_length <= a->preferredMessageSize)
            {
                logf(LOG_DEBUG, "  Dropped last normal-sized record");
                *pres = Z_PRES_PARTIAL_2;
                break;
            }
            /* record can only be fetched by itself */
-           if (fres->len < a->maximumRecordSize)
+           if (this_length < a->maximumRecordSize)
            {
                logf(LOG_DEBUG, "  Record > prefmsgsz");
                if (toget > 1)
@@ -763,7 +813,6 @@ static Z_Records *pack_records(association *a, char *setname, int start,
                    reclist.records[reclist.num_records] =
                         surrogatediagrec(a->proto, fres->basename, 16, 0);
                    reclist.num_records++;
-                   total_length += 10; /* totally arbitrary */
                    continue;
                }
            }
@@ -773,7 +822,6 @@ static Z_Records *pack_records(association *a, char *setname, int start,
                reclist.records[reclist.num_records] =
                    surrogatediagrec(a->proto, fres->basename, 17, 0);
                reclist.num_records++;
-               total_length += 10; /* totally arbitrary */
                continue;
            }
        }
@@ -787,21 +835,60 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        if (!(thisrec->u.databaseRecord = thisext = odr_malloc(a->encode,
            sizeof(Z_DatabaseRecord))))
            return 0;
-       thisext->direct_reference = oid; /* should be OID for current MARC */
+       recform.proto = a->proto;
+       recform.class = CLASS_RECSYN;
+       recform.value = fres->format;
+       thisext->direct_reference = odr_oiddup(a->encode,
+           oid_getoidbyent(&recform));
        thisext->indirect_reference = 0;
        thisext->descriptor = 0;
-       thisext->which = ODR_EXTERNAL_octet;
-       if (!(thisext->u.octet_aligned = odr_malloc(a->encode,
-           sizeof(Odr_oct))))
-           return 0;
-       if (!(thisext->u.octet_aligned->buf = 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;
+       if (fres->len < 0) /* Structured data */
+       {
+           switch (fres->format)
+           {
+               case VAL_SUTRS: thisext->which = Z_External_sutrs; break;
+               case VAL_GRS1: thisext->which = Z_External_grs1; break;
+               case VAL_EXPLAIN: thisext->which = Z_External_explainRecord;
+                   break;
+
+               default:
+                   logf(LOG_FATAL, "Unknown structured format from backend.");
+                   return 0;
+           }
+
+           /*
+            * We cheat on the pointers here. Obviously, the record field
+            * of the backend-fetch structure should have been a union for
+            * correctness, but we're stuck with this for backwards
+            * compatibility.
+            */
+           thisext->u.grs1 = (Z_GenericRecord*) fres->record;
+       }
+       else if (fres->format == VAL_SUTRS) /* SUTRS is a single-ASN.1-type */
+       {
+           Odr_oct *sutrs = odr_malloc(a->encode, sizeof(*sutrs));
+
+           thisext->which = Z_External_sutrs;
+           thisext->u.sutrs = sutrs;
+           sutrs->buf = odr_malloc(a->encode, fres->len);
+           sutrs->len = sutrs->size = fres->len;
+           memcpy(sutrs->buf, fres->record, fres->len);
+       }
+       else /* octet-aligned record. */
+       {
+           thisext->which = Z_External_octet;
+           if (!(thisext->u.octet_aligned = odr_malloc(a->encode,
+               sizeof(Odr_oct))))
+               return 0;
+           if (!(thisext->u.octet_aligned->buf = 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++;
-       total_length += fres->len;
        *next = fres->last_in_set ? 0 : recno + 1;
     }
     *num = reclist.num_records;
@@ -874,9 +961,9 @@ static Z_APDU *response_searchRequest(association *assoc, request *reqb,
     }
     else
     {
-       int toget;
+       static int toget;
        Z_ElementSetNames *setnames;
-       int presst = 0;
+       static int presst = 0;
 
        resp.records = 0;
        resp.resultCount = &bsrt->hits;
@@ -899,8 +986,16 @@ static Z_APDU *response_searchRequest(association *assoc, request *reqb,
 
        if (toget && !resp.records)
        {
+           oident *prefformat;
+           oid_value form;
+
+           if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
+               prefformat->class != CLASS_RECSYN)
+               form = VAL_NONE;
+           else
+               form = prefformat->value;
            resp.records = pack_records(assoc, req->resultSetName, 1,
-               &toget, setnames, &next, &presst);
+               &toget, setnames, &next, &presst, form);
            if (!resp.records)
                return 0;
            resp.numberOfRecordsReturned = &toget;
@@ -911,6 +1006,8 @@ static Z_APDU *response_searchRequest(association *assoc, request *reqb,
        }
        else
        {
+           if (*resp.resultCount)
+               next = 1;
            resp.numberOfRecordsReturned = &nulint;
            resp.nextResultSetPosition = &next;
            resp.searchStatus = &sr;
@@ -943,6 +1040,9 @@ static Z_APDU *process_presentRequest(association *assoc, request *reqb,
     static Z_APDU apdu;
     static Z_PresentResponse resp;
     static int presst, next, num;
+    oident *prefformat;
+    oid_value form;
+
 
     logf(LOG_LOG, "Got PresentRequest.");
     apdu.which = Z_APDU_presentResponse;
@@ -952,9 +1052,14 @@ static Z_APDU *process_presentRequest(association *assoc, request *reqb,
     resp.otherInfo = 0;
 #endif
 
+    if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
+       prefformat->class != CLASS_RECSYN)
+       form = VAL_NONE;
+    else
+       form = prefformat->value;
     num = *req->numberOfRecordsRequested;
     resp.records = pack_records(assoc, req->resultSetId,
-       *req->resultSetStartPoint, &num, 0, &next, &presst);
+       *req->resultSetStartPoint, &num, 0, &next, &presst, form);
     if (!resp.records)
        return 0;
     resp.numberOfRecordsReturned = &num;