+ if (apdu->which == Z_APDU_searchRequest &&
+ apdu->u.searchRequest->query &&
+ apdu->u.searchRequest->query->which == Z_Query_type_104 &&
+ apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
+ {
+ Z_RPNQuery *rpnquery = 0;
+ Z_SearchRequest *sr = apdu->u.searchRequest;
+ char *addinfo = 0;
+
+ yaz_log(LOG_LOG, "%sCQL: %s", m_session_str,
+ sr->query->u.type_104->u.cql);
+
+ int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
+ &rpnquery, odr_encode(),
+ &addinfo);
+ if (r == -3)
+ yaz_log(LOG_LOG, "%sNo CQL to RPN table", m_session_str);
+ else if (r)
+ {
+ yaz_log(LOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(),
+ yaz_diag_srw_to_bib1(r),
+ addinfo);
+ *new_apdu->u.searchResponse->searchStatus = 0;
+
+ send_to_client(new_apdu);
+
+ return 0;
+ }
+ else
+ {
+ sr->query->which = Z_Query_type_1;
+ sr->query->u.type_1 = rpnquery;
+ }
+ return apdu;
+ }
+ return apdu;
+}
+
+Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
+{
+ if (apdu->which == Z_APDU_searchRequest)
+ {
+ Z_SearchRequest *sr = apdu->u.searchRequest;
+ int err = 0;
+ char *addinfo = 0;
+
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+ if (cfg)
+ err = cfg->check_query(odr_encode(), m_default_target,
+ sr->query, &addinfo);
+ if (err)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
+ *new_apdu->u.searchResponse->searchStatus = 0;
+
+ send_to_client(new_apdu);
+
+ return 0;
+ }
+ }
+ return apdu;
+}
+
+Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
+{
+ m_marcxml_flag = 0;
+ if (apdu->which == Z_APDU_searchRequest)
+ {
+ Z_SearchRequest *sr = apdu->u.searchRequest;
+ int err = 0;
+ char *addinfo = 0;
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+
+ Z_RecordComposition rc_temp, *rc = 0;
+ if (sr->smallSetElementSetNames)
+ {
+ rc_temp.which = Z_RecordComp_simple;
+ rc_temp.u.simple = sr->smallSetElementSetNames;
+ rc = &rc_temp;
+ }
+
+ if (cfg)
+ err = cfg->check_syntax(odr_encode(),
+ m_default_target,
+ sr->preferredRecordSyntax, rc,
+ &addinfo, &m_stylesheet_schema, &m_schema);
+ if (err == -1)
+ {
+ sr->preferredRecordSyntax =
+ yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN, VAL_USMARC);
+ m_marcxml_flag = 1;
+ }
+ else if (err)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
+ *new_apdu->u.searchResponse->searchStatus = 0;
+
+ send_to_client(new_apdu);
+
+ return 0;
+ }
+ }
+ else if (apdu->which == Z_APDU_presentRequest)
+ {
+ Z_PresentRequest *pr = apdu->u.presentRequest;
+ int err = 0;
+ char *addinfo = 0;
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+
+ if (cfg)
+ err = cfg->check_syntax(odr_encode(), m_default_target,
+ pr->preferredRecordSyntax,
+ pr->recordComposition,
+ &addinfo, &m_stylesheet_schema, &m_schema);
+ if (err == -1)
+ {
+ pr->preferredRecordSyntax =
+ yaz_oidval_to_z3950oid(odr_decode(), CLASS_RECSYN, VAL_USMARC);
+ m_marcxml_flag = 1;
+ }
+ else if (err)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+
+ new_apdu->u.presentResponse->referenceId = pr->referenceId;
+ new_apdu->u.presentResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
+ *new_apdu->u.presentResponse->presentStatus =
+ Z_PresentStatus_failure;
+
+ send_to_client(new_apdu);
+
+ return 0;
+ }
+ }
+ return apdu;
+}
+
+Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
+{
+ 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;
+
+ // 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);
+ z_presentRequest->recordComposition =
+ (Z_RecordComposition *)
+ odr_malloc(m_s2z_odr_search,
+ sizeof(Z_RecordComposition));
+ if (srw_req->recordSchema)
+ {
+ 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;
+
+ // 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)
+ {
+ 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
+ {
+ send_to_srw_client_error(4, 0);
+ }
+ }
+ int len = 0;
+ Z_GDU *p = z_get_HTTP_Response(odr_encode(), 400);
+ send_GDU(p, &len);
+ timeout(1);
+}
+
+void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
+{
+ if (!m_client && m_invalid_session)
+ {
+ m_apdu_invalid_session = apdu;
+ m_mem_invalid_session = odr_extract_mem(odr_decode());
+ apdu = m_initRequest_apdu;
+ }
+
+ // Determine our client.
+ Z_OtherInformation **oi;
+ get_otherInfoAPDU(apdu, &oi);
+ m_client = get_client(apdu, get_cookie(oi), get_proxy(oi));
+ if (!m_client)
+ {
+ delete this;
+ return;
+ }
+ m_client->m_server = this;
+
+ if (apdu->which == Z_APDU_initRequest)
+ {
+ if (apdu->u.initRequest->implementationId)
+ yaz_log(LOG_LOG, "%simplementationId: %s",
+ m_session_str, apdu->u.initRequest->implementationId);
+ if (apdu->u.initRequest->implementationName)
+ yaz_log(LOG_LOG, "%simplementationName: %s",
+ m_session_str, apdu->u.initRequest->implementationName);
+ if (apdu->u.initRequest->implementationVersion)
+ yaz_log(LOG_LOG, "%simplementationVersion: %s",
+ m_session_str, apdu->u.initRequest->implementationVersion);
+ if (m_initRequest_apdu == 0)
+ {
+ if (m_initRequest_mem)
+ nmem_destroy(m_initRequest_mem);
+ m_initRequest_apdu = apdu;
+ m_initRequest_mem = odr_extract_mem(odr_decode());
+ }
+ if (m_client->m_init_flag)
+ {
+ if (handle_init_response_for_invalid_session(apdu))
+ return;
+ Z_APDU *apdu2 = m_client->m_initResponse;
+ apdu2->u.initResponse->otherInfo = 0;
+ if (m_client->m_cookie && *m_client->m_cookie)
+ set_otherInformationString(apdu2, VAL_COOKIE, 1,
+ m_client->m_cookie);
+ apdu2->u.initResponse->referenceId =
+ apdu->u.initRequest->referenceId;
+ send_to_client(apdu2);
+ return;
+ }
+ m_client->m_init_flag = 1;
+ }
+ handle_max_record_retrieve(apdu);
+
+ if (apdu)
+ apdu = handle_syntax_validation(apdu);
+
+ if (apdu)
+ apdu = handle_query_transformation(apdu);
+
+ if (apdu)
+ apdu = handle_query_validation(apdu);
+
+ if (apdu)
+ apdu = result_set_optimize(apdu);
+ if (!apdu)
+ {
+ m_client->timeout(m_target_idletime); // mark it active even
+ // though we didn't use it
+ return;
+ }
+
+ // delete other info part from PDU before sending to target
+ get_otherInfoAPDU(apdu, &oi);
+ if (oi)
+ *oi = 0;
+
+ if (apdu->which == Z_APDU_presentRequest &&
+ m_client->m_resultSetStartPoint == 0)
+ {
+ Z_PresentRequest *pr = apdu->u.presentRequest;
+ m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
+ m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
+ } else {
+ m_client->m_resultSetStartPoint = 0;
+ }
+ if (m_client->send_to_target(apdu) < 0)
+ {
+ delete m_client;
+ m_client = 0;
+ delete this;
+ }
+ else
+ m_client->m_waiting = 1;
+}
+
+void Yaz_Proxy::connectNotify()
+{
+}
+
+void Yaz_Proxy::shutdown()
+{
+ m_invalid_session = 0;
+ // only keep if keep_alive flag is set...
+ if (m_client &&
+ m_client->m_pdu_recv < m_keepalive_limit_pdu &&
+ m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
+ m_client->m_waiting == 0)
+ {
+ yaz_log(LOG_LOG, "%sShutdown (client to proxy) keepalive %s",
+ m_session_str,
+ m_client->get_hostname());
+ yaz_log(LOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
+ m_session_str, m_client->m_pdu_recv,
+ m_client->m_bytes_sent + m_client->m_bytes_recv,
+ m_keepalive_limit_bw, m_keepalive_limit_pdu);
+ assert (m_client->m_waiting != 2);
+ // Tell client (if any) that no server connection is there..
+ m_client->m_server = 0;
+ m_invalid_session = 0;
+ }
+ else if (m_client)
+ {
+ yaz_log (LOG_LOG, "%sShutdown (client to proxy) close %s",
+ m_session_str,
+ m_client->get_hostname());
+ assert (m_client->m_waiting != 2);
+ delete m_client;
+ }
+ else if (!m_parent)
+ {
+ yaz_log (LOG_LOG, "%sshutdown (client to proxy) bad state",
+ m_session_str);
+ assert (m_parent);
+ }
+ else
+ {
+ yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
+ m_session_str);
+ }
+ if (m_parent)
+ m_parent->pre_init();
+ delete this;
+}
+
+const char *Yaz_ProxyClient::get_session_str()
+{
+ if (!m_server)
+ return "0 ";
+ return m_server->get_session_str();
+}
+
+void Yaz_ProxyClient::shutdown()
+{
+ yaz_log (LOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
+ get_hostname());
+ delete m_server;
+ delete this;
+}
+
+void Yaz_Proxy::failNotify()
+{
+ inc_request_no();
+ yaz_log (LOG_LOG, "%sConnection closed by client",
+ get_session_str());
+ shutdown();
+}
+
+void Yaz_ProxyClient::failNotify()
+{
+ if (m_server)
+ m_server->inc_request_no();
+ yaz_log (LOG_LOG, "%sConnection closed by target %s",
+ get_session_str(), get_hostname());
+ shutdown();
+}
+
+void Yaz_ProxyClient::connectNotify()
+{
+ const char *s = get_session_str();
+ const char *h = get_hostname();
+ yaz_log (LOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
+ m_target_idletime);
+ timeout(m_target_idletime);
+ if (!m_server)
+ pre_init_client();