2 * Copyright (c) 1998-2004, Index Data.
3 * See the file LICENSE for details.
5 * $Id: yaz-proxy.cpp,v 1.79 2004-01-07 11:37:45 adam Exp $
12 #include <yaz/marcdisp.h>
13 #include <yaz/yaz-iconv.h>
15 #include <yaz/diagbib1.h>
16 #include <yaz++/proxy.h>
17 #include <yaz/pquery.h>
20 #include <libxslt/xsltutils.h>
21 #include <libxslt/transform.h>
24 static const char *apdu_name(Z_APDU *apdu)
28 case Z_APDU_initRequest:
30 case Z_APDU_initResponse:
31 return "initResponse";
32 case Z_APDU_searchRequest:
33 return "searchRequest";
34 case Z_APDU_searchResponse:
35 return "searchResponse";
36 case Z_APDU_presentRequest:
37 return "presentRequest";
38 case Z_APDU_presentResponse:
39 return "presentResponse";
40 case Z_APDU_deleteResultSetRequest:
41 return "deleteResultSetRequest";
42 case Z_APDU_deleteResultSetResponse:
43 return "deleteResultSetResponse";
44 case Z_APDU_scanRequest:
46 case Z_APDU_scanResponse:
47 return "scanResponse";
48 case Z_APDU_sortRequest:
50 case Z_APDU_sortResponse:
51 return "sortResponse";
52 case Z_APDU_extendedServicesRequest:
53 return "extendedServicesRequest";
54 case Z_APDU_extendedServicesResponse:
55 return "extendedServicesResponse";
62 static const char *gdu_name(Z_GDU *gdu)
67 return apdu_name(gdu->u.z3950);
68 case Z_GDU_HTTP_Request:
69 return "HTTP Request";
70 case Z_GDU_HTTP_Response:
71 return "HTTP Response";
73 return "Unknown request/response";
76 Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable,
78 Yaz_Z_Assoc(the_PDU_Observable), m_bw_stat(60), m_pdu_stat(60)
80 m_PDU_Observable = the_PDU_Observable;
85 m_keepalive_limit_bw = 500000;
86 m_keepalive_limit_pdu = 1000;
89 m_proxy_authentication = 0;
93 m_client_idletime = 600;
94 m_target_idletime = 600;
95 m_optimize = xstrdup ("1");
96 strcpy(m_session_str, "0 ");
98 m_bytes_sent = m_bytes_recv = 0;
102 m_max_record_retrieve = 0;
106 m_invalid_session = 0;
111 m_initRequest_apdu = 0;
112 m_initRequest_mem = 0;
113 m_apdu_invalid_session = 0;
114 m_mem_invalid_session = 0;
116 m_s2z_odr_search = 0;
118 m_s2z_search_apdu = 0;
119 m_s2z_present_apdu = 0;
120 m_http_keepalive = 0;
123 m_s2z_packing = Z_SRW_recordPacking_string;
124 m_time_tv.tv_sec = 0;
125 m_time_tv.tv_usec = 0;
128 Yaz_Proxy::~Yaz_Proxy()
130 yaz_log(LOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
131 m_bytes_sent, m_bytes_recv);
132 nmem_destroy(m_initRequest_mem);
133 nmem_destroy(m_mem_invalid_session);
134 xfree (m_proxyTarget);
135 xfree (m_default_target);
136 xfree (m_proxy_authentication);
138 xfree (m_stylesheet);
141 odr_destroy(m_s2z_odr_init);
142 if (m_s2z_odr_search)
143 odr_destroy(m_s2z_odr_search);
147 int Yaz_Proxy::set_config(const char *config)
150 m_config = new Yaz_ProxyConfig();
151 xfree(m_config_fname);
152 m_config_fname = xstrdup(config);
153 int r = m_config->read_xml(config);
155 m_config->get_generic_info(&m_log_mask, &m_max_clients);
159 void Yaz_Proxy::set_default_target(const char *target)
161 xfree (m_default_target);
162 m_default_target = 0;
164 m_default_target = (char *) xstrdup (target);
167 void Yaz_Proxy::set_proxy_authentication (const char *auth)
169 xfree (m_proxy_authentication);
170 m_proxy_authentication = 0;
172 m_proxy_authentication = (char *) xstrdup (auth);
175 Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
178 return m_parent->check_reconfigure();
180 Yaz_ProxyConfig *cfg = m_config;
183 yaz_log(LOG_LOG, "reconfigure");
185 if (m_config_fname && cfg)
187 yaz_log(LOG_LOG, "reconfigure config %s", m_config_fname);
188 int r = cfg->read_xml(m_config_fname);
190 yaz_log(LOG_WARN, "reconfigure failed");
194 cfg->get_generic_info(&m_log_mask, &m_max_clients);
198 yaz_log(LOG_LOG, "reconfigure");
204 IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
205 *the_PDU_Observable, int fd)
208 Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable, this);
209 new_proxy->m_config = 0;
210 new_proxy->m_config_fname = 0;
211 new_proxy->timeout(m_client_idletime);
212 new_proxy->m_target_idletime = m_target_idletime;
213 new_proxy->set_default_target(m_default_target);
214 new_proxy->m_max_clients = m_max_clients;
215 new_proxy->m_log_mask = m_log_mask;
216 new_proxy->set_APDU_log(get_APDU_log());
217 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
218 new_proxy->set_APDU_yazlog(1);
220 new_proxy->set_APDU_yazlog(0);
221 new_proxy->set_proxy_authentication(m_proxy_authentication);
222 sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
224 yaz_log (LOG_LOG, "%sNew session %s", new_proxy->m_session_str,
225 the_PDU_Observable->getpeername());
229 char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
232 Z_OtherInformationUnit *oi;
234 ent.proto = PROTO_Z3950;
235 ent.oclass = CLASS_USERINFO;
236 ent.value = (oid_value) VAL_COOKIE;
237 assert (oid_ent_to_oid (&ent, oid));
239 if (oid_ent_to_oid (&ent, oid) &&
240 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
241 oi->which == Z_OtherInfo_characterInfo)
242 return oi->information.characterInfo;
246 char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
249 Z_OtherInformationUnit *oi;
251 ent.proto = PROTO_Z3950;
252 ent.oclass = CLASS_USERINFO;
253 ent.value = (oid_value) VAL_PROXY;
254 if (oid_ent_to_oid (&ent, oid) &&
255 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
256 oi->which == Z_OtherInfo_characterInfo)
257 return oi->information.characterInfo;
261 const char *Yaz_Proxy::load_balance(const char **url)
263 int zurl_in_use[MAX_ZURL_PLEX];
267 for (i = 0; i<MAX_ZURL_PLEX; i++)
269 for (c = m_parent->m_clientPool; c; c = c->m_next)
271 for (i = 0; url[i]; i++)
272 if (!strcmp(url[i], c->get_hostname()))
277 for (i = 0; url[i]; i++)
279 yaz_log(LOG_DEBUG, "%szurl=%s use=%d",
280 m_session_str, url[i], zurl_in_use[i]);
281 if (min > zurl_in_use[i])
284 min = zurl_in_use[i];
290 Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
291 const char *proxy_host)
294 Yaz_Proxy *parent = m_parent;
295 Z_OtherInformation **oi;
296 Yaz_ProxyClient *c = m_client;
300 const char *url[MAX_ZURL_PLEX];
301 Yaz_ProxyConfig *cfg = check_reconfigure();
305 /* only to be enabled for debugging... */
306 if (!strcmp(proxy_host, "stop"))
309 xfree(m_default_target);
310 m_default_target = xstrdup(proxy_host);
311 proxy_host = m_default_target;
313 int client_idletime = -1;
314 const char *cql2rpn_fname = 0;
315 url[0] = m_default_target;
320 cfg->get_target_info(proxy_host, url, &m_bw_max,
321 &m_pdu_max, &m_max_record_retrieve,
322 &m_target_idletime, &client_idletime,
323 &parent->m_max_clients,
324 &m_keepalive_limit_bw,
325 &m_keepalive_limit_pdu,
329 if (client_idletime != -1)
331 m_client_idletime = client_idletime;
332 timeout(m_client_idletime);
335 m_cql2rpn.set_pqf_file(cql2rpn_fname);
338 yaz_log(LOG_LOG, "%sNo default target", m_session_str);
341 // we don't handle multiplexing for cookie session, so we just
342 // pick the first one in this case (anonymous users will be able
343 // to use any backend)
344 if (cookie && *cookie)
345 m_proxyTarget = (char*) xstrdup(url[0]);
347 m_proxyTarget = (char*) xstrdup(load_balance(url));
349 if (cookie && *cookie)
350 { // search in sessions with a cookie
351 for (c = parent->m_clientPool; c; c = c->m_next)
354 assert (*c->m_prev == c);
355 if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
356 !strcmp(m_proxyTarget, c->get_hostname()))
359 // The following handles "cancel"
360 // If connection is busy (waiting for PDU) and
361 // we have an initRequest we can safely do re-open
362 if (c->m_waiting && apdu->which == Z_APDU_initRequest)
364 yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
371 c->m_last_resultCount = 0;
372 c->m_sr_transform = 0;
374 c->m_resultSetStartPoint = 0;
375 c->m_target_idletime = m_target_idletime;
376 if (c->client(m_proxyTarget))
383 c->m_seqno = parent->m_seqno;
384 if (c->m_server && c->m_server != this)
385 c->m_server->m_client = 0;
388 yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
395 // don't have a client session yet. Search in session w/o cookie
396 for (c = parent->m_clientPool; c; c = c->m_next)
399 assert (*c->m_prev == c);
400 if (c->m_server == 0 && c->m_cookie == 0 &&
402 !strcmp(m_proxyTarget, c->get_hostname()))
405 yaz_log (LOG_LOG, "%sREUSE %s",
406 m_session_str, c->get_hostname());
408 c->m_seqno = parent->m_seqno;
409 assert(c->m_server == 0);
412 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
413 c->set_APDU_yazlog(1);
415 c->set_APDU_yazlog(0);
427 if (apdu->which != Z_APDU_initRequest)
429 yaz_log (LOG_LOG, "no first INIT!");
432 Z_InitRequest *initRequest = apdu->u.initRequest;
434 if (!initRequest->idAuthentication)
436 if (m_proxy_authentication)
438 initRequest->idAuthentication =
439 (Z_IdAuthentication *)
440 odr_malloc (odr_encode(),
441 sizeof(*initRequest->idAuthentication));
442 initRequest->idAuthentication->which =
443 Z_IdAuthentication_open;
444 initRequest->idAuthentication->u.open =
445 odr_strdup (odr_encode(), m_proxy_authentication);
449 // go through list of clients - and find the lowest/oldest one.
450 Yaz_ProxyClient *c_min = 0;
452 int no_of_clients = 0;
453 if (parent->m_clientPool)
454 yaz_log (LOG_DEBUG, "Existing sessions");
455 for (c = parent->m_clientPool; c; c = c->m_next)
457 yaz_log (LOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
458 c->m_waiting, c->get_hostname(),
459 c->m_cookie ? c->m_cookie : "");
461 if (min_seq < 0 || c->m_seqno < min_seq)
463 min_seq = c->m_seqno;
467 if (no_of_clients >= parent->m_max_clients)
470 if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
472 yaz_log (LOG_LOG, "%sMAXCLIENTS Destroy %d",
473 m_session_str, c->m_seqno);
474 if (c->m_server && c->m_server != this)
480 yaz_log (LOG_LOG, "%sMAXCLIENTS Reuse %d %d %s",
482 c->m_seqno, parent->m_seqno, c->get_hostname());
486 c->m_cookie = xstrdup(cookie);
487 c->m_seqno = parent->m_seqno;
488 if (c->m_server && c->m_server != this)
490 c->m_server->m_client = 0;
494 c->m_target_idletime = m_target_idletime;
495 c->timeout(m_target_idletime);
497 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
498 c->set_APDU_yazlog(1);
500 c->set_APDU_yazlog(0);
507 yaz_log (LOG_LOG, "%sNEW %d %s",
508 m_session_str, parent->m_seqno, m_proxyTarget);
509 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
510 c->m_next = parent->m_clientPool;
512 c->m_next->m_prev = &c->m_next;
513 parent->m_clientPool = c;
514 c->m_prev = &parent->m_clientPool;
520 c->m_cookie = xstrdup(cookie);
522 c->m_seqno = parent->m_seqno;
524 c->m_last_resultCount = 0;
527 c->m_sr_transform = 0;
529 c->m_resultSetStartPoint = 0;
531 if (c->client(m_proxyTarget))
536 c->m_target_idletime = m_target_idletime;
539 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
540 c->set_APDU_yazlog(1);
542 c->set_APDU_yazlog(0);
544 yaz_log (LOG_DEBUG, "get_client 3 %p %p", this, c);
548 void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
551 for (i = 0; i<num; i++)
554 Z_DefaultDiagFormat *r;
555 Z_DiagRec *p = pp[i];
556 if (p->which != Z_DiagRec_defaultFormat)
558 yaz_log(LOG_LOG, "%sError no diagnostics", m_session_str);
562 r = p->u.defaultFormat;
563 if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
564 ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
565 yaz_log(LOG_LOG, "%sError unknown diagnostic set", m_session_str);
568 case Z_DefaultDiagFormat_v2Addinfo:
569 yaz_log(LOG_LOG, "%sError %d %s:%s",
571 *r->condition, diagbib1_str(*r->condition),
574 case Z_DefaultDiagFormat_v3Addinfo:
575 yaz_log(LOG_LOG, "%sError %d %s:%s",
577 *r->condition, diagbib1_str(*r->condition),
584 void Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p)
588 xmlDocPtr xslt_doc = xmlParseFile(m_stylesheet);
589 xsltStylesheetPtr xsp;
591 xsp = xsltParseStylesheetDoc(xslt_doc);
594 for (i = 0; i < p->num_records; i++)
596 Z_NamePlusRecord *npr = p->records[i];
597 if (npr->which == Z_NamePlusRecord_databaseRecord)
599 Z_External *r = npr->u.databaseRecord;
600 if (r->which == Z_External_octet)
602 xmlDocPtr res, doc = xmlParseMemory(
603 (char*) r->u.octet_aligned->buf,
604 r->u.octet_aligned->len);
606 res = xsltApplyStylesheet(xsp, doc, 0);
610 xmlDocDumpMemory (res, &out_buf, &out_len);
611 p->records[i]->u.databaseRecord =
612 z_ext_record(odr_encode(), VAL_TEXT_XML,
613 (char*) out_buf, out_len);
619 xsltFreeStylesheet(xsp);
622 void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p)
626 yaz_marc_t mt = yaz_marc_create();
627 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
628 for (i = 0; i < p->num_records; i++)
630 Z_NamePlusRecord *npr = p->records[i];
631 if (npr->which == Z_NamePlusRecord_databaseRecord)
633 Z_External *r = npr->u.databaseRecord;
634 if (r->which == Z_External_octet)
638 if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
639 r->u.octet_aligned->len,
642 yaz_iconv_t cd = yaz_iconv_open("UTF-8", "MARC-8");
643 WRBUF wrbuf = wrbuf_alloc();
646 size_t inbytesleft = rlen;
647 const char *inp = result;
648 while (cd && inbytesleft)
650 size_t outbytesleft = sizeof(outbuf);
654 r = yaz_iconv (cd, (char**) &inp,
656 &outp, &outbytesleft);
657 if (r == (size_t) (-1))
659 int e = yaz_iconv_error(cd);
660 if (e != YAZ_ICONV_E2BIG)
662 yaz_log(LOG_WARN, "conversion failure");
666 wrbuf_write(wrbuf, outbuf, outp - outbuf);
671 npr->u.databaseRecord = z_ext_record(odr_encode(),
675 wrbuf_free(wrbuf, 1);
680 yaz_marc_destroy(mt);
683 void Yaz_Proxy::logtime()
685 if (m_time_tv.tv_sec)
688 gettimeofday(&tv, 0);
689 long diff = (tv.tv_sec - m_time_tv.tv_sec)*1000000 +
690 (tv.tv_usec - m_time_tv.tv_usec);
692 yaz_log(LOG_LOG, "%sElapsed %ld.%03ld", m_session_str,
693 diff/1000000, (diff/1000)%1000);
695 m_time_tv.tv_sec = 0;
696 m_time_tv.tv_usec = 0;
699 int Yaz_Proxy::send_http_response(int code)
701 ODR o = odr_encode();
702 const char *ctype = "text/xml";
703 Z_GDU *gdu = z_get_HTTP_Response(o, code);
704 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
706 hres->version = odr_strdup(o, m_http_version);
707 m_http_keepalive = 0;
708 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
710 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
714 int r = send_GDU(gdu, &len);
719 int Yaz_Proxy::send_srw_response(Z_SRW_PDU *srw_pdu)
721 ODR o = odr_encode();
722 const char *ctype = "text/xml";
723 Z_GDU *gdu = z_get_HTTP_Response(o, 200);
724 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
726 hres->version = odr_strdup(o, m_http_version);
727 z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
728 if (m_http_keepalive)
729 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
731 static Z_SOAP_Handler soap_handlers[2] = {
733 {"http://www.loc.gov/zing/srw/", 0,
734 (Z_SOAP_fun) yaz_srw_codec},
739 Z_SOAP *soap_package = (Z_SOAP*) odr_malloc(o, sizeof(Z_SOAP));
740 soap_package->which = Z_SOAP_generic;
741 soap_package->u.generic =
742 (Z_SOAP_Generic *) odr_malloc(o, sizeof(*soap_package->u.generic));
743 soap_package->u.generic->no = 0;
744 soap_package->u.generic->ns = soap_handlers[0].ns;
745 soap_package->u.generic->p = (void *) srw_pdu;
746 soap_package->ns = m_soap_ns;
747 int ret = z_soap_codec_enc(o, &soap_package,
748 &hres->content_buf, &hres->content_len,
750 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
752 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
756 int r = send_GDU(gdu, &len);
761 int Yaz_Proxy::send_to_srw_client_error(int srw_error)
763 ODR o = odr_encode();
764 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
765 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
767 srw_res->num_diagnostics = 1;
768 srw_res->diagnostics = (Z_SRW_diagnostic *)
769 odr_malloc(o, sizeof(*srw_res->diagnostics));
770 srw_res->diagnostics[0].code = odr_intdup(o, srw_error);
771 srw_res->diagnostics[0].details = 0;
772 return send_srw_response(srw_pdu);
775 int Yaz_Proxy::z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
776 Z_DefaultDiagFormat *ddf)
778 int bib1_code = *ddf->condition;
779 if (bib1_code == 109)
781 srw_res->num_diagnostics = 1;
782 srw_res->diagnostics = (Z_SRW_diagnostic *)
783 odr_malloc(o, sizeof(*srw_res->diagnostics));
784 srw_res->diagnostics[0].code =
785 odr_intdup(o, yaz_diag_bib1_to_srw(*ddf->condition));
786 srw_res->diagnostics[0].details = ddf->u.v2Addinfo;
790 int Yaz_Proxy::send_to_srw_client_ok(int hits, Z_Records *records, int start)
792 ODR o = odr_encode();
793 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
794 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
796 srw_res->numberOfRecords = odr_intdup (o, hits);
797 if (records && records->which == Z_Records_DBOSD)
799 srw_res->num_records =
800 records->u.databaseOrSurDiagnostics->num_records;
802 srw_res->records = (Z_SRW_record *)
803 odr_malloc(o, srw_res->num_records * sizeof(Z_SRW_record));
804 for (i = 0; i < srw_res->num_records; i++)
806 Z_NamePlusRecord *npr = records->u.databaseOrSurDiagnostics->records[i];
807 if (npr->which != Z_NamePlusRecord_databaseRecord)
809 srw_res->records[i].recordSchema = "diagnostic";
810 srw_res->records[i].recordPacking = m_s2z_packing;
811 srw_res->records[i].recordData_buf = "67";
812 srw_res->records[i].recordData_len = 2;
813 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
816 Z_External *r = npr->u.databaseRecord;
817 oident *ent = oid_getentbyoid(r->direct_reference);
818 if (r->which == Z_External_octet && ent->value == VAL_TEXT_XML)
820 srw_res->records[i].recordSchema = m_schema;
821 srw_res->records[i].recordPacking = m_s2z_packing;
822 srw_res->records[i].recordData_buf = (char*)
823 r->u.octet_aligned->buf;
824 srw_res->records[i].recordData_len = r->u.octet_aligned->len;
825 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
829 srw_res->records[i].recordSchema = "diagnostic";
830 srw_res->records[i].recordPacking = m_s2z_packing;
831 srw_res->records[i].recordData_buf = "67";
832 srw_res->records[i].recordData_len = 2;
833 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
837 if (records && records->which == Z_Records_NSD)
840 http_code = z_to_srw_diag(odr_encode(), srw_res,
841 records->u.nonSurrogateDiagnostic);
843 return send_http_response(http_code);
845 return send_srw_response(srw_pdu);
849 int Yaz_Proxy::send_srw_explain()
851 Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
852 Z_SRW_explainResponse *er = res->u.explain_response;
854 Yaz_ProxyConfig *cfg = check_reconfigure();
858 assert (m_proxyTarget);
859 char *b = cfg->get_explain(odr_encode(), 0 /* target */,
863 er->record.recordData_buf = b;
864 er->record.recordData_len = len;
865 er->record.recordPacking = m_s2z_packing;
868 return send_srw_response(res);
871 int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu, int *len)
875 if (apdu->which == Z_APDU_initResponse)
877 Z_InitResponse *res = apdu->u.initResponse;
878 if (*res->result == 0)
880 send_to_srw_client_error(3);
882 else if (!m_s2z_search_apdu)
888 handle_incoming_Z_PDU(m_s2z_search_apdu);
891 else if (m_s2z_search_apdu && apdu->which == Z_APDU_searchResponse)
893 m_s2z_search_apdu = 0;
894 Z_SearchResponse *res = apdu->u.searchResponse;
895 m_s2z_hit_count = *res->resultCount;
896 if (res->records && res->records->which == Z_Records_NSD)
898 send_to_srw_client_ok(0, res->records, 1);
900 else if (m_s2z_present_apdu)
902 handle_incoming_Z_PDU(m_s2z_present_apdu);
906 send_to_srw_client_ok(m_s2z_hit_count, res->records, 1);
909 else if (m_s2z_present_apdu && apdu->which == Z_APDU_presentResponse)
912 *m_s2z_present_apdu->u.presentRequest->resultSetStartPoint;
914 m_s2z_present_apdu = 0;
915 Z_PresentResponse *res = apdu->u.presentResponse;
916 send_to_srw_client_ok(m_s2z_hit_count, res->records, start);
921 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
922 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
924 int r = send_Z_PDU(apdu, len);
931 int Yaz_Proxy::send_to_client(Z_APDU *apdu)
934 int kill_session = 0;
935 if (apdu->which == Z_APDU_searchResponse)
937 Z_SearchResponse *sr = apdu->u.searchResponse;
938 Z_Records *p = sr->records;
939 if (p && p->which == Z_Records_NSD)
941 Z_DiagRec dr, *dr_p = &dr;
942 dr.which = Z_DiagRec_defaultFormat;
943 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
945 *sr->searchStatus = 0;
946 display_diagrecs(&dr_p, 1);
950 if (p && p->which == Z_Records_DBOSD)
953 convert_to_marcxml(p->u.databaseOrSurDiagnostics);
954 convert_xsl(p->u.databaseOrSurDiagnostics);
958 yaz_log(LOG_LOG, "%s%d hits", m_session_str,
960 if (*sr->resultCount < 0)
962 m_invalid_session = 1;
965 *sr->searchStatus = 0;
967 create_nonSurrogateDiagnostics(odr_encode(), 2, 0);
968 *sr->resultCount = 0;
973 else if (apdu->which == Z_APDU_presentResponse)
975 Z_PresentResponse *sr = apdu->u.presentResponse;
976 Z_Records *p = sr->records;
977 if (p && p->which == Z_Records_NSD)
979 Z_DiagRec dr, *dr_p = &dr;
980 dr.which = Z_DiagRec_defaultFormat;
981 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
982 if (*sr->presentStatus == Z_PresentStatus_success)
983 *sr->presentStatus = Z_PresentStatus_failure;
984 display_diagrecs(&dr_p, 1);
986 if (p && p->which == Z_Records_DBOSD)
989 convert_to_marcxml(p->u.databaseOrSurDiagnostics);
990 convert_xsl(p->u.databaseOrSurDiagnostics);
993 int r = send_PDU_convert(apdu, &len);
997 m_bw_stat.add_bytes(len);
1002 m_parent->pre_init();
1006 if (!m_http_keepalive)
1019 int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
1022 const char *apdu_name_tmp = apdu_name(apdu);
1023 int r = send_Z_PDU(apdu, &len);
1024 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
1025 yaz_log (LOG_LOG, "%sSending %s to %s %d bytes",
1027 apdu_name_tmp, get_hostname(), len);
1028 m_bytes_sent += len;
1032 Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
1034 if (apdu->which == Z_APDU_presentRequest)
1036 Z_PresentRequest *pr = apdu->u.presentRequest;
1037 int toget = *pr->numberOfRecordsRequested;
1038 int start = *pr->resultSetStartPoint;
1040 yaz_log(LOG_LOG, "%sPresent %s %d+%d", m_session_str,
1041 pr->resultSetId, start, toget);
1043 if (*m_parent->m_optimize == '0')
1046 if (!m_client->m_last_resultSetId)
1048 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1049 new_apdu->u.presentResponse->records =
1050 create_nonSurrogateDiagnostics(odr_encode(), 30,
1052 send_to_client(new_apdu);
1055 if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
1057 if (start+toget-1 > m_client->m_last_resultCount)
1059 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1060 new_apdu->u.presentResponse->records =
1061 create_nonSurrogateDiagnostics(odr_encode(), 13, 0);
1062 send_to_client(new_apdu);
1065 Z_NamePlusRecordList *npr;
1066 if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
1067 pr->preferredRecordSyntax,
1068 pr->recordComposition))
1070 yaz_log (LOG_LOG, "%sReturned cached records for present request",
1072 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1073 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1075 new_apdu->u.presentResponse->numberOfRecordsReturned
1076 = odr_intdup(odr_encode(), toget);
1078 new_apdu->u.presentResponse->records = (Z_Records*)
1079 odr_malloc(odr_encode(), sizeof(Z_Records));
1080 new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
1081 new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
1082 new_apdu->u.presentResponse->nextResultSetPosition =
1083 odr_intdup(odr_encode(), start+toget);
1085 send_to_client(new_apdu);
1091 if (apdu->which != Z_APDU_searchRequest)
1093 Z_SearchRequest *sr = apdu->u.searchRequest;
1094 Yaz_Z_Query *this_query = new Yaz_Z_Query;
1095 Yaz_Z_Databases this_databases;
1097 this_databases.set(sr->num_databaseNames, (const char **)
1100 this_query->set_Z_Query(sr->query);
1102 char query_str[120];
1103 this_query->print(query_str, sizeof(query_str)-1);
1104 yaz_log(LOG_LOG, "%sSearch %s", m_session_str, query_str);
1106 if (*m_parent->m_optimize != '0' &&
1107 m_client->m_last_ok && m_client->m_last_query &&
1108 m_client->m_last_query->match(this_query) &&
1109 !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
1110 m_client->m_last_databases.match(this_databases))
1113 if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
1114 m_client->m_last_resultCount < *sr->largeSetLowerBound)
1116 Z_NamePlusRecordList *npr;
1117 int toget = *sr->mediumSetPresentNumber;
1118 Z_RecordComposition *comp = 0;
1120 if (toget > m_client->m_last_resultCount)
1121 toget = m_client->m_last_resultCount;
1123 if (sr->mediumSetElementSetNames)
1125 comp = (Z_RecordComposition *)
1126 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1127 comp->which = Z_RecordComp_simple;
1128 comp->u.simple = sr->mediumSetElementSetNames;
1131 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1132 sr->preferredRecordSyntax, comp))
1134 yaz_log (LOG_LOG, "%sReturned cached records for medium set",
1136 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1137 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1138 new_apdu->u.searchResponse->resultCount =
1139 &m_client->m_last_resultCount;
1141 new_apdu->u.searchResponse->numberOfRecordsReturned
1142 = odr_intdup(odr_encode(), toget);
1144 new_apdu->u.searchResponse->presentStatus =
1145 odr_intdup(odr_encode(), Z_PresentStatus_success);
1146 new_apdu->u.searchResponse->records = (Z_Records*)
1147 odr_malloc(odr_encode(), sizeof(Z_Records));
1148 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1149 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1150 new_apdu->u.searchResponse->nextResultSetPosition =
1151 odr_intdup(odr_encode(), toget+1);
1152 send_to_client(new_apdu);
1158 // send present request (medium size)
1159 yaz_log (LOG_LOG, "%sOptimizing search for medium set",
1162 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1163 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1164 pr->referenceId = sr->referenceId;
1165 pr->resultSetId = sr->resultSetName;
1166 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1167 *pr->numberOfRecordsRequested = toget;
1168 pr->recordComposition = comp;
1169 m_client->m_sr_transform = 1;
1173 else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
1174 m_client->m_last_resultCount <= 0)
1176 // large set. Return pseudo-search response immediately
1177 yaz_log (LOG_LOG, "%sOptimizing search for large set",
1179 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1180 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1181 new_apdu->u.searchResponse->resultCount =
1182 &m_client->m_last_resultCount;
1183 send_to_client(new_apdu);
1188 Z_NamePlusRecordList *npr;
1189 int toget = m_client->m_last_resultCount;
1190 Z_RecordComposition *comp = 0;
1192 // send a present request (small set)
1194 if (sr->smallSetElementSetNames)
1196 comp = (Z_RecordComposition *)
1197 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1198 comp->which = Z_RecordComp_simple;
1199 comp->u.simple = sr->smallSetElementSetNames;
1202 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1203 sr->preferredRecordSyntax, comp))
1205 yaz_log (LOG_LOG, "%sReturned cached records for small set",
1207 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1208 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1209 new_apdu->u.searchResponse->resultCount =
1210 &m_client->m_last_resultCount;
1212 new_apdu->u.searchResponse->numberOfRecordsReturned
1213 = odr_intdup(odr_encode(), toget);
1215 new_apdu->u.searchResponse->presentStatus =
1216 odr_intdup(odr_encode(), Z_PresentStatus_success);
1217 new_apdu->u.searchResponse->records = (Z_Records*)
1218 odr_malloc(odr_encode(), sizeof(Z_Records));
1219 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1220 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1221 new_apdu->u.searchResponse->nextResultSetPosition =
1222 odr_intdup(odr_encode(), toget+1);
1223 send_to_client(new_apdu);
1228 yaz_log (LOG_LOG, "%sOptimizing search for small set",
1230 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1231 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1232 pr->referenceId = sr->referenceId;
1233 pr->resultSetId = sr->resultSetName;
1234 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1235 *pr->numberOfRecordsRequested = toget;
1236 pr->recordComposition = comp;
1237 m_client->m_sr_transform = 1;
1242 else // query doesn't match
1244 delete m_client->m_last_query;
1245 m_client->m_last_query = this_query;
1246 m_client->m_last_ok = 0;
1247 m_client->m_cache.clear();
1248 m_client->m_resultSetStartPoint = 0;
1250 xfree (m_client->m_last_resultSetId);
1251 m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
1253 m_client->m_last_databases.set(sr->num_databaseNames,
1254 (const char **) sr->databaseNames);
1260 void Yaz_Proxy::inc_request_no()
1262 char *cp = strchr(m_session_str, ' ');
1265 sprintf(cp+1, "%d ", m_request_no);
1268 void Yaz_Proxy::recv_GDU(Z_GDU *apdu, int len)
1272 m_bytes_recv += len;
1274 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
1275 yaz_log (LOG_DEBUG, "%sReceiving %s from client %d bytes",
1276 m_session_str, gdu_name(apdu), len);
1278 if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
1281 m_bw_stat.add_bytes(len);
1282 m_pdu_stat.add_bytes(1);
1284 gettimeofday(&m_time_tv, 0);
1286 int bw_total = m_bw_stat.get_total();
1287 int pdu_total = m_pdu_stat.get_total();
1292 if (bw_total > m_bw_max)
1294 reduce = (bw_total/m_bw_max);
1299 if (pdu_total > m_pdu_max)
1301 int nreduce = (m_pdu_max >= 60) ? 1 : 60/m_pdu_max;
1302 reduce = (reduce > nreduce) ? reduce : nreduce;
1307 yaz_log(LOG_LOG, "%sdelay=%d bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
1308 m_session_str, reduce, bw_total, pdu_total,
1309 m_bw_max, m_pdu_max);
1311 m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
1312 timeout(reduce); // call us reduce seconds later
1314 else if (apdu->which == Z_GDU_Z3950)
1315 handle_incoming_Z_PDU(apdu->u.z3950);
1316 else if (apdu->which == Z_GDU_HTTP_Request)
1317 handle_incoming_HTTP(apdu->u.HTTP_Request);
1320 void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
1322 if (m_max_record_retrieve)
1324 if (apdu->which == Z_APDU_presentRequest)
1326 Z_PresentRequest *pr = apdu->u.presentRequest;
1327 if (pr->numberOfRecordsRequested &&
1328 *pr->numberOfRecordsRequested > m_max_record_retrieve)
1329 *pr->numberOfRecordsRequested = m_max_record_retrieve;
1334 Z_Records *Yaz_Proxy::create_nonSurrogateDiagnostics(ODR odr,
1336 const char *addinfo)
1338 Z_Records *rec = (Z_Records *)
1339 odr_malloc (odr, sizeof(*rec));
1341 odr_malloc (odr, sizeof(*err));
1342 Z_DiagRec *drec = (Z_DiagRec *)
1343 odr_malloc (odr, sizeof(*drec));
1344 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1345 odr_malloc (odr, sizeof(*dr));
1347 rec->which = Z_Records_NSD;
1348 rec->u.nonSurrogateDiagnostic = dr;
1349 dr->diagnosticSetId =
1350 yaz_oidval_to_z3950oid (odr, CLASS_DIAGSET, VAL_BIB1);
1351 dr->condition = err;
1352 dr->which = Z_DefaultDiagFormat_v2Addinfo;
1353 dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
1357 Z_APDU *Yaz_Proxy::handle_query_transformation(Z_APDU *apdu)
1359 if (apdu->which == Z_APDU_searchRequest &&
1360 apdu->u.searchRequest->query &&
1361 apdu->u.searchRequest->query->which == Z_Query_type_104 &&
1362 apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
1364 Z_RPNQuery *rpnquery = 0;
1365 Z_SearchRequest *sr = apdu->u.searchRequest;
1368 yaz_log(LOG_LOG, "%sCQL: %s", m_session_str,
1369 sr->query->u.type_104->u.cql);
1371 int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
1372 &rpnquery, odr_encode(),
1375 yaz_log(LOG_LOG, "%sNo CQL to RPN table", m_session_str);
1378 yaz_log(LOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
1379 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1381 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1382 new_apdu->u.searchResponse->records =
1383 create_nonSurrogateDiagnostics(odr_encode(),
1384 yaz_diag_srw_to_bib1(r),
1386 *new_apdu->u.searchResponse->searchStatus = 0;
1388 send_to_client(new_apdu);
1394 sr->query->which = Z_Query_type_1;
1395 sr->query->u.type_1 = rpnquery;
1402 Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
1404 if (apdu->which == Z_APDU_searchRequest)
1406 Z_SearchRequest *sr = apdu->u.searchRequest;
1410 Yaz_ProxyConfig *cfg = check_reconfigure();
1412 err = cfg->check_query(odr_encode(), m_default_target,
1413 sr->query, &addinfo);
1416 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1418 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1419 new_apdu->u.searchResponse->records =
1420 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1421 *new_apdu->u.searchResponse->searchStatus = 0;
1423 send_to_client(new_apdu);
1431 Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
1434 if (apdu->which == Z_APDU_searchRequest)
1436 Z_SearchRequest *sr = apdu->u.searchRequest;
1439 Yaz_ProxyConfig *cfg = check_reconfigure();
1441 Z_RecordComposition rc_temp, *rc = 0;
1442 if (sr->smallSetElementSetNames)
1444 rc_temp.which = Z_RecordComp_simple;
1445 rc_temp.u.simple = sr->smallSetElementSetNames;
1450 err = cfg->check_syntax(odr_encode(),
1452 sr->preferredRecordSyntax, rc,
1453 &addinfo, &m_stylesheet, &m_schema);
1456 sr->preferredRecordSyntax =
1457 yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN, VAL_USMARC);
1462 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1464 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1465 new_apdu->u.searchResponse->records =
1466 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1467 *new_apdu->u.searchResponse->searchStatus = 0;
1469 send_to_client(new_apdu);
1474 else if (apdu->which == Z_APDU_presentRequest)
1476 Z_PresentRequest *pr = apdu->u.presentRequest;
1479 Yaz_ProxyConfig *cfg = check_reconfigure();
1482 err = cfg->check_syntax(odr_encode(), m_default_target,
1483 pr->preferredRecordSyntax,
1484 pr->recordComposition,
1485 &addinfo, &m_stylesheet, &m_schema);
1488 pr->preferredRecordSyntax =
1489 yaz_oidval_to_z3950oid(odr_decode(), CLASS_RECSYN, VAL_USMARC);
1494 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1496 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1497 new_apdu->u.presentResponse->records =
1498 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1499 *new_apdu->u.presentResponse->presentStatus =
1500 Z_PresentStatus_failure;
1502 send_to_client(new_apdu);
1510 Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
1514 Z_ElementSetNames *esn = (Z_ElementSetNames *)
1515 odr_malloc(o, sizeof(Z_ElementSetNames));
1516 esn->which = Z_ElementSetNames_generic;
1517 esn->u.generic = odr_strdup(o, schema);
1521 void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
1526 odr_destroy(m_s2z_odr_init);
1529 if (m_s2z_odr_search)
1531 odr_destroy(m_s2z_odr_search);
1532 m_s2z_odr_search = 0;
1535 m_http_keepalive = 0;
1537 if (!strcmp(hreq->version, "1.0"))
1539 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1540 if (v && !strcmp(v, "Keep-Alive"))
1541 m_http_keepalive = 1;
1543 m_http_keepalive = 0;
1544 m_http_version = "1.0";
1548 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1549 if (v && !strcmp(v, "close"))
1550 m_http_keepalive = 0;
1552 m_http_keepalive = 1;
1553 m_http_version = "1.1";
1556 Z_SRW_PDU *srw_pdu = 0;
1557 Z_SOAP *soap_package = 0;
1559 if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
1561 || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
1564 m_s2z_odr_init = odr_createmem(ODR_ENCODE);
1565 m_s2z_odr_search = odr_createmem(ODR_ENCODE);
1566 m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
1567 m_s2z_init_apdu = 0;
1568 m_s2z_search_apdu = 0;
1569 m_s2z_present_apdu = 0;
1570 if (srw_pdu->which == Z_SRW_searchRetrieve_request)
1572 Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
1574 // set packing for response records ..
1575 if (srw_req->recordPacking &&
1576 !strcmp(srw_req->recordPacking, "xml"))
1577 m_s2z_packing = Z_SRW_recordPacking_XML;
1579 m_s2z_packing = Z_SRW_recordPacking_string;
1581 // prepare search PDU
1582 m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
1583 Z_APDU_searchRequest);
1584 Z_SearchRequest *z_searchRequest =
1585 m_s2z_search_apdu->u.searchRequest;
1587 z_searchRequest->num_databaseNames = 1;
1588 z_searchRequest->databaseNames = (char**)
1589 odr_malloc(m_s2z_odr_search, sizeof(char *));
1590 z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
1593 // query transformation
1594 Z_Query *query = (Z_Query *)
1595 odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
1596 z_searchRequest->query = query;
1598 if (srw_req->query_type == Z_SRW_query_type_cql)
1600 Z_External *ext = (Z_External *)
1601 odr_malloc(m_s2z_odr_search, sizeof(*ext));
1602 ext->direct_reference =
1603 odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
1604 ext->indirect_reference = 0;
1605 ext->descriptor = 0;
1606 ext->which = Z_External_CQL;
1607 ext->u.cql = srw_req->query.cql;
1609 query->which = Z_Query_type_104;
1610 query->u.type_104 = ext;
1612 else if (srw_req->query_type == Z_SRW_query_type_pqf)
1614 Z_RPNQuery *RPNquery;
1615 YAZ_PQF_Parser pqf_parser;
1617 pqf_parser = yaz_pqf_create ();
1619 RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
1620 srw_req->query.pqf);
1623 const char *pqf_msg;
1625 int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
1626 yaz_log(LOG_LOG, "%*s^\n", off+4, "");
1627 yaz_log(LOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
1629 send_to_srw_client_error(10);
1632 query->which = Z_Query_type_1;
1633 query->u.type_1 = RPNquery;
1635 yaz_pqf_destroy (pqf_parser);
1639 send_to_srw_client_error(11);
1644 m_s2z_present_apdu = 0;
1646 if (srw_req->maximumRecords)
1647 max = *srw_req->maximumRecords;
1649 if (srw_req->startRecord)
1650 start = *srw_req->startRecord;
1653 // Some backend, such as Voyager doesn't honor piggyback
1654 // So we use present always (0 &&).
1655 if (0 && start <= 1) // Z39.50 piggyback
1657 *z_searchRequest->smallSetUpperBound = max;
1658 *z_searchRequest->mediumSetPresentNumber = max;
1659 *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
1661 z_searchRequest->preferredRecordSyntax =
1662 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
1664 if (srw_req->recordSchema)
1666 z_searchRequest->smallSetElementSetNames =
1667 z_searchRequest->mediumSetElementSetNames =
1668 mk_esn_from_schema(m_s2z_odr_search,
1669 srw_req->recordSchema);
1672 else // Z39.50 present
1674 m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
1675 Z_APDU_presentRequest);
1676 Z_PresentRequest *z_presentRequest =
1677 m_s2z_present_apdu->u.presentRequest;
1678 *z_presentRequest->resultSetStartPoint = start;
1679 *z_presentRequest->numberOfRecordsRequested = max;
1680 z_presentRequest->preferredRecordSyntax =
1681 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
1683 z_presentRequest->recordComposition =
1684 (Z_RecordComposition *)
1685 odr_malloc(m_s2z_odr_search,
1686 sizeof(Z_RecordComposition));
1687 if (srw_req->recordSchema)
1689 z_presentRequest->recordComposition->which =
1690 Z_RecordComp_simple;
1691 z_presentRequest->recordComposition->u.simple =
1692 mk_esn_from_schema(m_s2z_odr_search,
1693 srw_req->recordSchema);
1699 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
1700 Z_APDU_initRequest);
1702 // prevent m_initRequest_apdu memory from being grabbed
1703 // in Yaz_Proxy::handle_incoming_Z_PDU
1704 m_initRequest_apdu = m_s2z_init_apdu;
1705 handle_incoming_Z_PDU(m_s2z_init_apdu);
1710 handle_incoming_Z_PDU(m_s2z_search_apdu);
1714 else if (srw_pdu->which == Z_SRW_explain_request)
1716 Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
1718 if (srw_req->recordPacking &&
1719 !strcmp(srw_req->recordPacking, "xml"))
1720 m_s2z_packing = Z_SRW_recordPacking_XML;
1722 m_s2z_packing = Z_SRW_recordPacking_string;
1726 yaz_log(LOG_LOG, "handle_incoming: initRequest");
1727 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
1728 Z_APDU_initRequest);
1730 // prevent m_initRequest_apdu memory from being grabbed
1731 // in Yaz_Proxy::handle_incoming_Z_PDU
1732 m_initRequest_apdu = m_s2z_init_apdu;
1733 handle_incoming_Z_PDU(m_s2z_init_apdu);
1741 Z_GDU *p = z_get_HTTP_Response(odr_encode(), 400);
1746 void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
1748 if (!m_client && m_invalid_session)
1750 m_apdu_invalid_session = apdu;
1751 m_mem_invalid_session = odr_extract_mem(odr_decode());
1752 apdu = m_initRequest_apdu;
1755 // Determine our client.
1756 Z_OtherInformation **oi;
1757 get_otherInfoAPDU(apdu, &oi);
1758 m_client = get_client(apdu, get_cookie(oi), get_proxy(oi));
1764 m_client->m_server = this;
1766 if (apdu->which == Z_APDU_initRequest)
1768 if (apdu->u.initRequest->implementationId)
1769 yaz_log(LOG_LOG, "%simplementationId: %s",
1770 m_session_str, apdu->u.initRequest->implementationId);
1771 if (apdu->u.initRequest->implementationName)
1772 yaz_log(LOG_LOG, "%simplementationName: %s",
1773 m_session_str, apdu->u.initRequest->implementationName);
1774 if (apdu->u.initRequest->implementationVersion)
1775 yaz_log(LOG_LOG, "%simplementationVersion: %s",
1776 m_session_str, apdu->u.initRequest->implementationVersion);
1777 if (m_initRequest_apdu == 0)
1779 if (m_initRequest_mem)
1780 nmem_destroy(m_initRequest_mem);
1781 m_initRequest_apdu = apdu;
1782 m_initRequest_mem = odr_extract_mem(odr_decode());
1784 if (m_client->m_init_flag)
1786 if (handle_init_response_for_invalid_session(apdu))
1788 Z_APDU *apdu2 = m_client->m_initResponse;
1789 apdu2->u.initResponse->otherInfo = 0;
1790 if (m_client->m_cookie && *m_client->m_cookie)
1791 set_otherInformationString(apdu2, VAL_COOKIE, 1,
1792 m_client->m_cookie);
1793 apdu2->u.initResponse->referenceId =
1794 apdu->u.initRequest->referenceId;
1795 send_to_client(apdu2);
1798 m_client->m_init_flag = 1;
1800 handle_max_record_retrieve(apdu);
1803 apdu = handle_syntax_validation(apdu);
1806 apdu = handle_query_transformation(apdu);
1809 apdu = handle_query_validation(apdu);
1812 apdu = result_set_optimize(apdu);
1815 m_client->timeout(m_target_idletime); // mark it active even
1816 // though we didn't use it
1820 // delete other info part from PDU before sending to target
1821 get_otherInfoAPDU(apdu, &oi);
1825 if (apdu->which == Z_APDU_presentRequest &&
1826 m_client->m_resultSetStartPoint == 0)
1828 Z_PresentRequest *pr = apdu->u.presentRequest;
1829 m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
1830 m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
1832 m_client->m_resultSetStartPoint = 0;
1834 if (m_client->send_to_target(apdu) < 0)
1841 m_client->m_waiting = 1;
1844 void Yaz_Proxy::connectNotify()
1848 void Yaz_Proxy::shutdown()
1850 m_invalid_session = 0;
1851 // only keep if keep_alive flag is set...
1853 m_client->m_pdu_recv < m_keepalive_limit_pdu &&
1854 m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
1855 m_client->m_waiting == 0)
1857 yaz_log(LOG_LOG, "%sShutdown (client to proxy) keepalive %s",
1859 m_client->get_hostname());
1860 yaz_log(LOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
1861 m_session_str, m_client->m_pdu_recv,
1862 m_client->m_bytes_sent + m_client->m_bytes_recv,
1863 m_keepalive_limit_bw, m_keepalive_limit_pdu);
1864 assert (m_client->m_waiting != 2);
1865 // Tell client (if any) that no server connection is there..
1866 m_client->m_server = 0;
1867 m_invalid_session = 0;
1871 yaz_log (LOG_LOG, "%sShutdown (client to proxy) close %s",
1873 m_client->get_hostname());
1874 assert (m_client->m_waiting != 2);
1879 yaz_log (LOG_LOG, "%sshutdown (client to proxy) bad state",
1885 yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
1889 m_parent->pre_init();
1893 const char *Yaz_ProxyClient::get_session_str()
1897 return m_server->get_session_str();
1900 void Yaz_ProxyClient::shutdown()
1902 yaz_log (LOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
1908 void Yaz_Proxy::failNotify()
1911 yaz_log (LOG_LOG, "%sConnection closed by client",
1916 void Yaz_ProxyClient::failNotify()
1919 m_server->inc_request_no();
1920 yaz_log (LOG_LOG, "%sConnection closed by target %s",
1921 get_session_str(), get_hostname());
1925 void Yaz_ProxyClient::connectNotify()
1927 const char *s = get_session_str();
1928 const char *h = get_hostname();
1929 yaz_log (LOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
1931 timeout(m_target_idletime);
1936 IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
1937 *the_PDU_Observable, int fd)
1939 return new Yaz_ProxyClient(the_PDU_Observable, 0);
1942 Yaz_ProxyClient::~Yaz_ProxyClient()
1947 m_next->m_prev = m_prev;
1948 m_waiting = 2; // for debugging purposes only.
1949 odr_destroy(m_init_odr);
1950 delete m_last_query;
1951 xfree (m_last_resultSetId);
1955 void Yaz_ProxyClient::pre_init_client()
1957 Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
1958 Z_InitRequest *req = apdu->u.initRequest;
1960 ODR_MASK_SET(req->options, Z_Options_search);
1961 ODR_MASK_SET(req->options, Z_Options_present);
1962 ODR_MASK_SET(req->options, Z_Options_namedResultSets);
1963 ODR_MASK_SET(req->options, Z_Options_triggerResourceCtrl);
1964 ODR_MASK_SET(req->options, Z_Options_scan);
1965 ODR_MASK_SET(req->options, Z_Options_sort);
1966 ODR_MASK_SET(req->options, Z_Options_extendedServices);
1967 ODR_MASK_SET(req->options, Z_Options_delSet);
1969 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
1970 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
1971 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_3);
1973 if (send_to_target(apdu) < 0)
1984 void Yaz_Proxy::pre_init()
1987 const char *name = 0;
1988 const char *zurl_in_use[MAX_ZURL_PLEX];
1989 int limit_bw, limit_pdu, limit_req;
1990 int target_idletime, client_idletime;
1992 int keepalive_limit_bw, keepalive_limit_pdu;
1994 const char *cql2rpn = 0;
1995 const char *zeerex = 0;
1997 Yaz_ProxyConfig *cfg = check_reconfigure();
2001 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
2006 for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
2007 &limit_bw, &limit_pdu, &limit_req,
2008 &target_idletime, &client_idletime,
2010 &keepalive_limit_bw,
2011 &keepalive_limit_pdu,
2018 for (j = 0; zurl_in_use[j]; j++)
2024 for (c = m_clientPool; c; c = c->m_next)
2026 if (!strcmp(zurl_in_use[j], c->get_hostname()))
2028 if (c->m_cookie == 0)
2030 if (c->m_server == 0)
2039 yaz_log(LOG_LOG, "%spre-init %s %s use=%d other=%d spare=%d "
2040 "preinit=%d",m_session_str,
2041 name, zurl_in_use[j], in_use, other, spare, pre_init);
2042 if (spare < pre_init)
2044 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
2045 c->m_next = m_clientPool;
2047 c->m_next->m_prev = &c->m_next;
2049 c->m_prev = &m_clientPool;
2051 if (m_log_mask & PROXY_LOG_APDU_SERVER)
2052 c->set_APDU_yazlog(1);
2054 c->set_APDU_yazlog(0);
2056 if (c->client(zurl_in_use[j]))
2064 c->m_target_idletime = target_idletime;
2065 c->m_seqno = m_seqno++;
2072 void Yaz_Proxy::timeoutNotify()
2078 timeout(m_client_idletime);
2079 Z_GDU *apdu = m_bw_hold_PDU;
2082 if (apdu->which == Z_GDU_Z3950)
2083 handle_incoming_Z_PDU(apdu->u.z3950);
2084 else if (apdu->which == Z_GDU_HTTP_Request)
2085 handle_incoming_HTTP(apdu->u.HTTP_Request);
2091 yaz_log (LOG_LOG, "%sTimeout (client to proxy)", m_session_str);
2102 void Yaz_ProxyClient::timeoutNotify()
2105 m_server->inc_request_no();
2107 yaz_log (LOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
2114 Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
2115 Yaz_Proxy *parent) :
2116 Yaz_Z_Assoc (the_PDU_Observable)
2123 m_last_resultSetId = 0;
2124 m_last_resultCount = 0;
2128 m_init_odr = odr_createmem (ODR_DECODE);
2130 m_resultSetStartPoint = 0;
2131 m_bytes_sent = m_bytes_recv = 0;
2135 m_target_idletime = 600;
2139 const char *Yaz_Proxy::option(const char *name, const char *value)
2141 if (!strcmp (name, "optimize")) {
2144 m_optimize = xstrdup (value);
2151 void Yaz_ProxyClient::recv_HTTP_response(Z_HTTP_Response *apdu, int len)
2156 void Yaz_ProxyClient::recv_GDU(Z_GDU *apdu, int len)
2158 if (apdu->which == Z_GDU_Z3950)
2159 recv_Z_PDU(apdu->u.z3950, len);
2160 else if (apdu->which == Z_GDU_HTTP_Response)
2161 recv_HTTP_response(apdu->u.HTTP_Response, len);
2166 int Yaz_Proxy::handle_init_response_for_invalid_session(Z_APDU *apdu)
2168 if (!m_invalid_session)
2170 m_invalid_session = 0;
2171 handle_incoming_Z_PDU(m_apdu_invalid_session);
2172 assert (m_mem_invalid_session);
2173 nmem_destroy(m_mem_invalid_session);
2174 m_mem_invalid_session = 0;
2178 void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
2180 m_bytes_recv += len;
2183 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
2184 yaz_log (LOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
2185 apdu_name(apdu), get_hostname(), len);
2186 if (apdu->which == Z_APDU_initResponse)
2188 if (!m_server) // if this is a pre init session , check for more
2190 NMEM nmem = odr_extract_mem (odr_decode());
2191 odr_reset (m_init_odr);
2192 nmem_transfer (m_init_odr->mem, nmem);
2193 m_initResponse = apdu;
2195 Z_InitResponse *ir = apdu->u.initResponse;
2196 char *im0 = ir->implementationName;
2199 odr_malloc(m_init_odr, 20 + (im0 ? strlen(im0) : 0));
2206 strcat(im1, "(YAZ Proxy)");
2207 ir->implementationName = im1;
2209 nmem_destroy (nmem);
2211 if (m_server && m_server->handle_init_response_for_invalid_session(apdu))
2214 if (apdu->which == Z_APDU_searchResponse)
2216 Z_SearchResponse *sr = apdu->u.searchResponse;
2217 m_last_resultCount = *sr->resultCount;
2218 int status = *sr->searchStatus;
2219 if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
2223 if (sr->records && sr->records->which == Z_Records_DBOSD)
2225 m_cache.add(odr_decode(),
2226 sr->records->u.databaseOrSurDiagnostics, 1,
2231 if (apdu->which == Z_APDU_presentResponse)
2233 Z_PresentResponse *pr = apdu->u.presentResponse;
2237 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
2238 Z_SearchResponse *sr = new_apdu->u.searchResponse;
2239 sr->referenceId = pr->referenceId;
2240 *sr->resultCount = m_last_resultCount;
2241 sr->records = pr->records;
2242 sr->nextResultSetPosition = pr->nextResultSetPosition;
2243 sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
2247 pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
2249 m_cache.add(odr_decode(),
2250 pr->records->u.databaseOrSurDiagnostics,
2251 m_resultSetStartPoint, -1);
2252 m_resultSetStartPoint = 0;
2256 set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
2259 m_server->send_to_client(apdu);
2261 if (apdu->which == Z_APDU_close)
2267 int Yaz_Proxy::server(const char *addr)
2269 int r = Yaz_Z_Assoc::server(addr);
2272 yaz_log(LOG_LOG, "%sStarted proxy " VERSION " on %s", m_session_str, addr);