Beta 3
[yaz-moved-to-github.git] / server / seshigh.c
index 64c91ec..0fd64e9 100644 (file)
@@ -4,7 +4,20 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: seshigh.c,v $
- * Revision 1.41  1995-08-02 10:23:06  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
@@ -337,7 +350,6 @@ void ir_session(IOCHAN h, int event)
            req = request_get(); /* get a new request structure */
            odr_reset(assoc->decode);
            odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
-odr_dumpBER(log_file(), assoc->input_buffer, res);
            if (!z_APDU(assoc->decode, &req->request, 0))
            {
                logf(LOG_LOG, "ODR error on incoming PDU: %s",
@@ -747,7 +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;
@@ -756,6 +775,7 @@ 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;
@@ -768,19 +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)
@@ -789,7 +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;
                }
            }
@@ -799,7 +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;
            }
        }
@@ -820,43 +842,41 @@ static Z_Records *pack_records(association *a, char *setname, int start,
            oid_getoidbyent(&recform));
        thisext->indirect_reference = 0;
        thisext->descriptor = 0;
-       if (fres->format == VAL_SUTRS) /* SUTRS ios a single-ASN.1-type */
+       if (fres->len < 0) /* Structured data */
        {
-           Odr_oct sutrs_asn;
-           Odr_oct *sp = &sutrs_asn;
-           Odr_any *single = odr_malloc(a->encode, sizeof(*single));
-           char *buf, *remember;
-           int len, s_remember;
-
-           sutrs_asn.buf = (unsigned char*) fres->record;
-           sutrs_asn.len = sutrs_asn.size = fres->len;
-           /*
-            * we borrow the encoding stream for preparing the buffer. This
-            * is not the most elegant solution - a better way might have been
-            * to reserve a different stream, or to devise a better system
-            * for handling externals in general.
-            */
-           remember = odr_getbuf(a->encode, &len, &s_remember);
-           buf = odr_malloc(a->encode, fres->len + 10); /* buf for encoding */
-           odr_setbuf(a->encode, buf, fres->len + 10, 0); /* can_grow==0 */
-           if (!z_SUTRS(a->encode, &sp, 0))
+           switch (fres->format)
            {
-               logf(LOG_LOG, "ODR error encoding SUTRS: %s",
-                   odr_errlist[odr_geterror(a->encode)]);
-               return 0;
+               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;
            }
-           thisext->which = ODR_EXTERNAL_single;
-           thisext->u.single_ASN1_type = single;
-           single->buf = (unsigned char*)odr_getbuf(a->encode, &single->len,
-               &single->size);
-           /* Now restore the encoding stream */
-           odr_setbuf(a->encode, remember, s_remember, 1);
-           logf(LOG_DEBUG, "   Format is SUTRS. len %d, encoded len %d",
-               fres->len, single->len);
+
+           /*
+            * 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. Easy as pie */
+       else /* octet-aligned record. */
        {
-           thisext->which = ODR_EXTERNAL_octet;
+           thisext->which = Z_External_octet;
            if (!(thisext->u.octet_aligned = odr_malloc(a->encode,
                sizeof(Odr_oct))))
                return 0;
@@ -869,7 +889,6 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        }
        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;
@@ -987,6 +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;