+ int recno, total_length = 0, toget = *num;
+ static Z_Records records;
+ static Z_NamePlusRecordList reclist;
+ static Z_NamePlusRecord *list[MAX_RECORDS];
+ oident recform;
+
+ records.which = Z_Records_DBOSD;
+ records.u.databaseOrSurDiagnostics = &reclist;
+ reclist.num_records = 0;
+ reclist.records = list;
+ *pres = Z_PRES_SUCCESS;
+ *num = 0;
+ *next = 0;
+
+ 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++)
+ {
+ bend_fetchrequest freq;
+ bend_fetchresult *fres;
+ Z_NamePlusRecord *thisrec;
+ Z_DatabaseRecord *thisext;
+
+ if (reclist.num_records == MAX_RECORDS - 1)
+ {
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ freq.setname = setname;
+ freq.number = recno;
+ freq.format = format;
+ if (!(fres = bend_fetch(a->backend, &freq, 0)))
+ {
+ *pres = Z_PRES_FAILURE;
+ return diagrec(a->proto, 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);
+ }
+ logf(LOG_DEBUG, " fetched record, len=%d, total=%d",
+ fres->len, total_length);
+ if (fres->len + total_length > a->preferredMessageSize)
+ {
+ /* record is small enough, really */
+ if (fres->len <= 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)
+ {
+ logf(LOG_DEBUG, " Record > prefmsgsz");
+ if (toget > 1)
+ {
+ logf(LOG_DEBUG, " Dropped it");
+ reclist.records[reclist.num_records] =
+ surrogatediagrec(a->proto, fres->basename, 16, 0);
+ reclist.num_records++;
+ total_length += 10; /* totally arbitrary */
+ 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++;
+ total_length += 10; /* totally arbitrary */
+ continue;
+ }
+ }
+ if (!(thisrec = odr_malloc(a->encode, sizeof(*thisrec))))
+ return 0;
+ if (!(thisrec->databaseName = 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,
+ sizeof(Z_DatabaseRecord))))
+ return 0;
+ 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;
+ if (fres->format == VAL_SUTRS) /* SUTRS ios a single-ASN.1-type */
+ {
+ 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))
+ {
+ logf(LOG_LOG, "ODR error encoding SUTRS: %s",
+ odr_errlist[odr_geterror(a->encode)]);
+ 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);
+ }
+ else /* octet-aligned record. Easy as pie */
+ {
+ 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;
+ }
+ 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;
+ return &records;
+}
+
+static Z_APDU *process_searchRequest(association *assoc, request *reqb,
+ int *fd)
+{
+ Z_SearchRequest *req = reqb->request->u.searchRequest;