+ if (!schema)
+ return 0;
+ Z_ElementSetNames *esn = (Z_ElementSetNames *)
+ odr_malloc(o, sizeof(Z_ElementSetNames));
+ esn->which = Z_ElementSetNames_generic;
+ esn->u.generic = odr_strdup(o, schema);
+ return esn;
+}
+
+void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
+{
+ if (m_s2z_odr_init)
+ {
+ odr_destroy(m_s2z_odr_init);
+ m_s2z_odr_init = 0;
+ }
+ if (m_s2z_odr_search)
+ {
+ odr_destroy(m_s2z_odr_search);
+ m_s2z_odr_search = 0;
+ }
+
+ m_http_keepalive = 0;
+ m_http_version = 0;
+ if (!strcmp(hreq->version, "1.0"))
+ {
+ const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
+ if (v && !strcmp(v, "Keep-Alive"))
+ m_http_keepalive = 1;
+ else
+ m_http_keepalive = 0;
+ m_http_version = "1.0";
+ }
+ else
+ {
+ const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
+ if (v && !strcmp(v, "close"))
+ m_http_keepalive = 0;
+ else
+ m_http_keepalive = 1;
+ m_http_version = "1.1";
+ }
+
+ Z_SRW_PDU *srw_pdu = 0;
+ Z_SOAP *soap_package = 0;
+ char *charset = 0;
+ Z_SRW_diagnostic *diagnostic = 0;
+ int num_diagnostic = 0;
+ if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
+ &charset) == 0
+ || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
+ &charset, &diagnostic, &num_diagnostic) == 0)
+ {
+ m_s2z_odr_init = odr_createmem(ODR_ENCODE);
+ m_s2z_odr_search = odr_createmem(ODR_ENCODE);
+ m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
+ m_s2z_init_apdu = 0;
+ m_s2z_search_apdu = 0;
+ m_s2z_present_apdu = 0;
+
+ m_s2z_stylesheet = 0;
+
+ if (srw_pdu->which == Z_SRW_searchRetrieve_request)
+ {
+ Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
+
+ m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
+ // recordXPath unsupported.
+ if (srw_req->recordXPath)
+ {
+ yaz_add_srw_diagnostic(odr_decode(),
+ &diagnostic, &num_diagnostic,
+ 72, 0);
+ }
+ // must have a query
+ if (!srw_req->query.cql)
+ {
+ yaz_add_srw_diagnostic(odr_decode(),
+ &diagnostic, &num_diagnostic,
+ 7, "query");
+ }
+ // sort unsupported
+ if (srw_req->sort_type != Z_SRW_sort_type_none)
+ {
+ yaz_add_srw_diagnostic(odr_decode(),
+ &diagnostic, &num_diagnostic,
+ 80, 0);
+ }
+ // save stylesheet
+ if (srw_req->stylesheet)
+ m_s2z_stylesheet =
+ odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
+
+ // set packing for response records ..
+ if (srw_req->recordPacking &&
+ !strcmp(srw_req->recordPacking, "xml"))
+ m_s2z_packing = Z_SRW_recordPacking_XML;
+ else
+ m_s2z_packing = Z_SRW_recordPacking_string;
+
+ if (num_diagnostic)
+ {
+ Z_SRW_PDU *srw_pdu =
+ yaz_srw_get(odr_encode(),
+ Z_SRW_searchRetrieve_response);
+ Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
+
+ srw_res->diagnostics = diagnostic;
+ srw_res->num_diagnostics = num_diagnostic;
+ send_srw_response(srw_pdu);
+ return;
+ }
+
+ // prepare search PDU
+ m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
+ Z_APDU_searchRequest);
+ Z_SearchRequest *z_searchRequest =
+ m_s2z_search_apdu->u.searchRequest;
+
+ z_searchRequest->num_databaseNames = 1;
+ z_searchRequest->databaseNames = (char**)
+ odr_malloc(m_s2z_odr_search, sizeof(char *));
+ z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
+ srw_req->database);
+
+ // query transformation
+ Z_Query *query = (Z_Query *)
+ odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
+ z_searchRequest->query = query;
+
+ if (srw_req->query_type == Z_SRW_query_type_cql)
+ {
+ Z_External *ext = (Z_External *)
+ odr_malloc(m_s2z_odr_search, sizeof(*ext));
+ ext->direct_reference =
+ odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
+ ext->indirect_reference = 0;
+ ext->descriptor = 0;
+ ext->which = Z_External_CQL;
+ ext->u.cql = srw_req->query.cql;
+
+ query->which = Z_Query_type_104;
+ query->u.type_104 = ext;
+ }
+ else if (srw_req->query_type == Z_SRW_query_type_pqf)
+ {
+ Z_RPNQuery *RPNquery;
+ YAZ_PQF_Parser pqf_parser;
+
+ pqf_parser = yaz_pqf_create ();
+
+ RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
+ srw_req->query.pqf);
+ if (!RPNquery)
+ {
+ const char *pqf_msg;
+ size_t off;
+ int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
+ yaz_log(LOG_LOG, "%*s^\n", off+4, "");
+ yaz_log(LOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
+
+ send_to_srw_client_error(10, 0);
+ return;
+ }
+ query->which = Z_Query_type_1;
+ query->u.type_1 = RPNquery;
+
+ yaz_pqf_destroy (pqf_parser);
+ }
+ else
+ {
+ send_to_srw_client_error(7, "query");
+ return;
+ }
+
+ // present
+ m_s2z_present_apdu = 0;
+ int max = 0;
+ if (srw_req->maximumRecords)
+ max = *srw_req->maximumRecords;
+ int start = 1;
+ if (srw_req->startRecord)
+ start = *srw_req->startRecord;
+ if (max > 0)
+ {
+ // Some backend, such as Voyager doesn't honor piggyback
+ // So we use present always (0 &&).
+ if (0 && start <= 1) // Z39.50 piggyback
+ {
+ *z_searchRequest->smallSetUpperBound = max;
+ *z_searchRequest->mediumSetPresentNumber = max;
+ *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
+
+ z_searchRequest->preferredRecordSyntax =
+ yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
+ VAL_TEXT_XML);
+ if (srw_req->recordSchema)
+ {
+ z_searchRequest->smallSetElementSetNames =
+ z_searchRequest->mediumSetElementSetNames =
+ mk_esn_from_schema(m_s2z_odr_search,
+ srw_req->recordSchema);
+ }
+ }
+ else // Z39.50 present
+ {
+ m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
+ Z_APDU_presentRequest);
+ Z_PresentRequest *z_presentRequest =
+ m_s2z_present_apdu->u.presentRequest;
+ *z_presentRequest->resultSetStartPoint = start;
+ *z_presentRequest->numberOfRecordsRequested = max;
+ z_presentRequest->preferredRecordSyntax =
+ yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
+ VAL_TEXT_XML);
+ if (srw_req->recordSchema)
+ {
+ z_presentRequest->recordComposition =
+ (Z_RecordComposition *)
+ odr_malloc(m_s2z_odr_search,
+ sizeof(Z_RecordComposition));
+ z_presentRequest->recordComposition->which =
+ Z_RecordComp_simple;
+ z_presentRequest->recordComposition->u.simple =
+ mk_esn_from_schema(m_s2z_odr_search,
+ srw_req->recordSchema);
+ }
+ }
+ }
+ if (!m_client)
+ {
+ m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
+ Z_APDU_initRequest);
+
+ // prevent m_initRequest_apdu memory from being grabbed
+ // in Yaz_Proxy::handle_incoming_Z_PDU
+ m_initRequest_apdu = m_s2z_init_apdu;
+ handle_incoming_Z_PDU(m_s2z_init_apdu);
+ return;
+ }
+ else
+ {
+ handle_incoming_Z_PDU(m_s2z_search_apdu);
+ return;
+ }
+ }
+ else if (srw_pdu->which == Z_SRW_explain_request)
+ {
+ Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
+
+ m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
+
+ // save stylesheet
+ if (srw_req->stylesheet)
+ m_s2z_stylesheet =
+ odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
+
+ if (srw_req->recordPacking &&
+ !strcmp(srw_req->recordPacking, "xml"))
+ m_s2z_packing = Z_SRW_recordPacking_XML;
+ else
+ m_s2z_packing = Z_SRW_recordPacking_string;
+
+ if (num_diagnostic)
+ {
+ send_srw_explain_response(diagnostic, num_diagnostic);
+ return;
+ }
+
+ if (!m_client)
+ {
+ m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
+ Z_APDU_initRequest);
+
+ // prevent m_initRequest_apdu memory from being grabbed
+ // in Yaz_Proxy::handle_incoming_Z_PDU
+ m_initRequest_apdu = m_s2z_init_apdu;
+ handle_incoming_Z_PDU(m_s2z_init_apdu);
+ }
+ else
+ send_srw_explain_response(0, 0);
+ return;
+ }
+ else if (srw_pdu->which == Z_SRW_scan_request)
+ {
+ m_s2z_database = odr_strdup(m_s2z_odr_init,
+ srw_pdu->u.scan_request->database);
+
+ yaz_add_srw_diagnostic(odr_decode(),
+ &diagnostic, &num_diagnostic,
+ 4, "scan");
+ Z_SRW_PDU *srw_pdu =
+ yaz_srw_get(odr_encode(),
+ Z_SRW_scan_response);
+ Z_SRW_scanResponse *srw_res = srw_pdu->u.scan_response;
+
+ srw_res->diagnostics = diagnostic;
+ srw_res->num_diagnostics = num_diagnostic;
+ send_srw_response(srw_pdu);
+ return;
+ }
+ else
+ {
+ m_s2z_database = 0;
+
+ send_to_srw_client_error(4, 0);
+ }
+ }
+ int len = 0;
+ Z_GDU *p = z_get_HTTP_Response(odr_encode(), 400);
+ timeout(0);
+ send_GDU(p, &len);
+}
+
+void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
+{
+ Z_ReferenceId **refid = get_referenceIdP(apdu);
+ nmem_reset(m_referenceId_mem);
+ if (refid && *refid)
+ {
+ m_referenceId = (Z_ReferenceId *)
+ nmem_malloc(m_referenceId_mem, sizeof(*m_referenceId));
+ m_referenceId->len = m_referenceId->size = (*refid)->len;
+ m_referenceId->buf = (unsigned char *)
+ nmem_malloc(m_referenceId_mem, (*refid)->len);
+ memcpy(m_referenceId->buf, (*refid)->buf, (*refid)->len);
+ }
+ else
+ m_referenceId = 0;
+
+ if (!m_client && m_invalid_session)
+ {
+ m_apdu_invalid_session = apdu;
+ m_mem_invalid_session = odr_extract_mem(odr_decode());
+ apdu = m_initRequest_apdu;
+ }
+