+ static Z_NamePlusRecord rec;
+ static int err;
+ oident bib1;
+#ifdef Z_95
+ static Z_DiagRec drec;
+ static Z_DefaultDiagFormat dr;
+#else
+ static Z_DiagRec dr;
+#endif
+
+ bib1.proto = 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;
+}
+
+/*
+ * multiple nonsurrogate diagnostics.
+ */
+static Z_DiagRecs *diagrecs(oid_proto proto, int error, char *addinfo)
+{
+ static Z_DiagRecs recs;
+ static int err;
+ oident bib1;
+#ifdef Z_95
+ static Z_DiagRec *recp[1], drec;
+ static Z_DefaultDiagFormat rec;
+#else
+ static Z_DiagRec *recp[1], rec;
+#endif
+
+ logf(LOG_DEBUG, "DiagRecs: %d -- %s", error, addinfo);
+ bib1.proto = 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;
+#else
+ recp[0] = &rec;
+#endif
+ rec.diagnosticSetId = oid_getoidbyent(&bib1);
+ rec.condition = &err;
+ rec.which = Z_DiagForm_v2AddInfo;
+ rec.addinfo = addinfo ? addinfo : "";
+ 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];
+ 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;
+ 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;
+ break;
+ }
+ freq.setname = setname;
+ freq.number = recno;
+ freq.comp = comp;
+ freq.format = format;
+ freq.stream = a->encode;
+ 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);
+ }
+ 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",
+ this_length, total_length);
+ if (this_length + total_length > a->preferredMessageSize)
+ {
+ /* record is small enough, really */
+ 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 (this_length < 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++;
+ 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++;
+ 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.oclass = 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->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++;
+ *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;