2 * Copyright (c) 1998-2004, Index Data.
3 * See the file LICENSE for details.
5 * $Id: yaz-proxy.cpp,v 1.76 2004-01-05 11:31:04 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;
110 m_initRequest_apdu = 0;
111 m_initRequest_mem = 0;
112 m_apdu_invalid_session = 0;
113 m_mem_invalid_session = 0;
115 m_s2z_odr_search = 0;
117 m_s2z_search_apdu = 0;
118 m_s2z_present_apdu = 0;
119 m_http_keepalive = 0;
122 m_s2z_packing = Z_SRW_recordPacking_string;
123 m_time_tv.tv_sec = 0;
124 m_time_tv.tv_usec = 0;
127 Yaz_Proxy::~Yaz_Proxy()
129 yaz_log(LOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
130 m_bytes_sent, m_bytes_recv);
131 nmem_destroy(m_initRequest_mem);
132 nmem_destroy(m_mem_invalid_session);
133 xfree (m_proxyTarget);
134 xfree (m_default_target);
135 xfree (m_proxy_authentication);
137 xfree (m_stylesheet);
139 odr_destroy(m_s2z_odr_init);
140 if (m_s2z_odr_search)
141 odr_destroy(m_s2z_odr_search);
145 int Yaz_Proxy::set_config(const char *config)
148 m_config = new Yaz_ProxyConfig();
149 xfree(m_config_fname);
150 m_config_fname = xstrdup(config);
151 int r = m_config->read_xml(config);
153 m_config->get_generic_info(&m_log_mask, &m_max_clients);
157 void Yaz_Proxy::set_default_target(const char *target)
159 xfree (m_default_target);
160 m_default_target = 0;
162 m_default_target = (char *) xstrdup (target);
165 void Yaz_Proxy::set_proxy_authentication (const char *auth)
167 xfree (m_proxy_authentication);
168 m_proxy_authentication = 0;
170 m_proxy_authentication = (char *) xstrdup (auth);
173 Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
176 return m_parent->check_reconfigure();
178 Yaz_ProxyConfig *cfg = m_config;
181 yaz_log(LOG_LOG, "reconfigure");
183 if (m_config_fname && cfg)
185 yaz_log(LOG_LOG, "reconfigure config %s", m_config_fname);
186 int r = cfg->read_xml(m_config_fname);
188 yaz_log(LOG_WARN, "reconfigure failed");
192 cfg->get_generic_info(&m_log_mask, &m_max_clients);
196 yaz_log(LOG_LOG, "reconfigure");
202 IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
203 *the_PDU_Observable, int fd)
206 Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable, this);
207 new_proxy->m_config = 0;
208 new_proxy->m_config_fname = 0;
209 new_proxy->timeout(m_client_idletime);
210 new_proxy->m_target_idletime = m_target_idletime;
211 new_proxy->set_default_target(m_default_target);
212 new_proxy->m_max_clients = m_max_clients;
213 new_proxy->m_log_mask = m_log_mask;
214 new_proxy->set_APDU_log(get_APDU_log());
215 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
216 new_proxy->set_APDU_yazlog(1);
218 new_proxy->set_APDU_yazlog(0);
219 new_proxy->set_proxy_authentication(m_proxy_authentication);
220 sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
222 yaz_log (LOG_LOG, "%sNew session %s", new_proxy->m_session_str,
223 the_PDU_Observable->getpeername());
227 char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
230 Z_OtherInformationUnit *oi;
232 ent.proto = PROTO_Z3950;
233 ent.oclass = CLASS_USERINFO;
234 ent.value = (oid_value) VAL_COOKIE;
235 assert (oid_ent_to_oid (&ent, oid));
237 if (oid_ent_to_oid (&ent, oid) &&
238 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
239 oi->which == Z_OtherInfo_characterInfo)
240 return oi->information.characterInfo;
244 char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
247 Z_OtherInformationUnit *oi;
249 ent.proto = PROTO_Z3950;
250 ent.oclass = CLASS_USERINFO;
251 ent.value = (oid_value) VAL_PROXY;
252 if (oid_ent_to_oid (&ent, oid) &&
253 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
254 oi->which == Z_OtherInfo_characterInfo)
255 return oi->information.characterInfo;
259 const char *Yaz_Proxy::load_balance(const char **url)
261 int zurl_in_use[MAX_ZURL_PLEX];
265 for (i = 0; i<MAX_ZURL_PLEX; i++)
267 for (c = m_parent->m_clientPool; c; c = c->m_next)
269 for (i = 0; url[i]; i++)
270 if (!strcmp(url[i], c->get_hostname()))
275 for (i = 0; url[i]; i++)
277 yaz_log(LOG_DEBUG, "%szurl=%s use=%d",
278 m_session_str, url[i], zurl_in_use[i]);
279 if (min > zurl_in_use[i])
282 min = zurl_in_use[i];
288 Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
289 const char *proxy_host)
292 Yaz_Proxy *parent = m_parent;
293 Z_OtherInformation **oi;
294 Yaz_ProxyClient *c = m_client;
298 const char *url[MAX_ZURL_PLEX];
299 Yaz_ProxyConfig *cfg = check_reconfigure();
303 /* only to be enabled for debugging... */
304 if (!strcmp(proxy_host, "stop"))
307 xfree(m_default_target);
308 m_default_target = xstrdup(proxy_host);
309 proxy_host = m_default_target;
311 int client_idletime = -1;
312 const char *cql2rpn_fname = 0;
313 url[0] = m_default_target;
318 cfg->get_target_info(proxy_host, url, &m_bw_max,
319 &m_pdu_max, &m_max_record_retrieve,
320 &m_target_idletime, &client_idletime,
321 &parent->m_max_clients,
322 &m_keepalive_limit_bw,
323 &m_keepalive_limit_pdu,
327 if (client_idletime != -1)
329 m_client_idletime = client_idletime;
330 timeout(m_client_idletime);
333 m_cql2rpn.set_pqf_file(cql2rpn_fname);
336 yaz_log(LOG_LOG, "%sNo default target", m_session_str);
339 // we don't handle multiplexing for cookie session, so we just
340 // pick the first one in this case (anonymous users will be able
341 // to use any backend)
342 if (cookie && *cookie)
343 m_proxyTarget = (char*) xstrdup(url[0]);
345 m_proxyTarget = (char*) xstrdup(load_balance(url));
347 if (cookie && *cookie)
348 { // search in sessions with a cookie
349 for (c = parent->m_clientPool; c; c = c->m_next)
352 assert (*c->m_prev == c);
353 if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
354 !strcmp(m_proxyTarget, c->get_hostname()))
357 // The following handles "cancel"
358 // If connection is busy (waiting for PDU) and
359 // we have an initRequest we can safely do re-open
360 if (c->m_waiting && apdu->which == Z_APDU_initRequest)
362 yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
369 c->m_last_resultCount = 0;
370 c->m_sr_transform = 0;
372 c->m_resultSetStartPoint = 0;
373 c->m_target_idletime = m_target_idletime;
374 if (c->client(m_proxyTarget))
381 c->m_seqno = parent->m_seqno;
382 if (c->m_server && c->m_server != this)
383 c->m_server->m_client = 0;
386 yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
393 // don't have a client session yet. Search in session w/o cookie
394 for (c = parent->m_clientPool; c; c = c->m_next)
397 assert (*c->m_prev == c);
398 if (c->m_server == 0 && c->m_cookie == 0 &&
400 !strcmp(m_proxyTarget, c->get_hostname()))
403 yaz_log (LOG_LOG, "%sREUSE %s",
404 m_session_str, c->get_hostname());
406 c->m_seqno = parent->m_seqno;
407 assert(c->m_server == 0);
410 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
411 c->set_APDU_yazlog(1);
413 c->set_APDU_yazlog(0);
425 if (apdu->which != Z_APDU_initRequest)
427 yaz_log (LOG_LOG, "no first INIT!");
430 Z_InitRequest *initRequest = apdu->u.initRequest;
432 if (!initRequest->idAuthentication)
434 if (m_proxy_authentication)
436 initRequest->idAuthentication =
437 (Z_IdAuthentication *)
438 odr_malloc (odr_encode(),
439 sizeof(*initRequest->idAuthentication));
440 initRequest->idAuthentication->which =
441 Z_IdAuthentication_open;
442 initRequest->idAuthentication->u.open =
443 odr_strdup (odr_encode(), m_proxy_authentication);
447 // go through list of clients - and find the lowest/oldest one.
448 Yaz_ProxyClient *c_min = 0;
450 int no_of_clients = 0;
451 if (parent->m_clientPool)
452 yaz_log (LOG_DEBUG, "Existing sessions");
453 for (c = parent->m_clientPool; c; c = c->m_next)
455 yaz_log (LOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
456 c->m_waiting, c->get_hostname(),
457 c->m_cookie ? c->m_cookie : "");
459 if (min_seq < 0 || c->m_seqno < min_seq)
461 min_seq = c->m_seqno;
465 if (no_of_clients >= parent->m_max_clients)
468 if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
470 yaz_log (LOG_LOG, "%sMAXCLIENTS Destroy %d",
471 m_session_str, c->m_seqno);
472 if (c->m_server && c->m_server != this)
478 yaz_log (LOG_LOG, "%sMAXCLIENTS Reuse %d %d %s",
480 c->m_seqno, parent->m_seqno, c->get_hostname());
484 c->m_cookie = xstrdup(cookie);
485 c->m_seqno = parent->m_seqno;
486 if (c->m_server && c->m_server != this)
488 c->m_server->m_client = 0;
492 c->m_target_idletime = m_target_idletime;
493 c->timeout(m_target_idletime);
495 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
496 c->set_APDU_yazlog(1);
498 c->set_APDU_yazlog(0);
505 yaz_log (LOG_LOG, "%sNEW %d %s",
506 m_session_str, parent->m_seqno, m_proxyTarget);
507 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
508 c->m_next = parent->m_clientPool;
510 c->m_next->m_prev = &c->m_next;
511 parent->m_clientPool = c;
512 c->m_prev = &parent->m_clientPool;
518 c->m_cookie = xstrdup(cookie);
520 c->m_seqno = parent->m_seqno;
522 c->m_last_resultCount = 0;
525 c->m_sr_transform = 0;
527 c->m_resultSetStartPoint = 0;
529 if (c->client(m_proxyTarget))
534 c->m_target_idletime = m_target_idletime;
537 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
538 c->set_APDU_yazlog(1);
540 c->set_APDU_yazlog(0);
542 yaz_log (LOG_DEBUG, "get_client 3 %p %p", this, c);
546 void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
549 for (i = 0; i<num; i++)
552 Z_DefaultDiagFormat *r;
553 Z_DiagRec *p = pp[i];
554 if (p->which != Z_DiagRec_defaultFormat)
556 yaz_log(LOG_LOG, "%sError no diagnostics", m_session_str);
560 r = p->u.defaultFormat;
561 if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
562 ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
563 yaz_log(LOG_LOG, "%sError unknown diagnostic set", m_session_str);
566 case Z_DefaultDiagFormat_v2Addinfo:
567 yaz_log(LOG_LOG, "%sError %d %s:%s",
569 *r->condition, diagbib1_str(*r->condition),
572 case Z_DefaultDiagFormat_v3Addinfo:
573 yaz_log(LOG_LOG, "%sError %d %s:%s",
575 *r->condition, diagbib1_str(*r->condition),
582 void Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p)
586 xmlDocPtr xslt_doc = xmlParseFile(m_stylesheet);
587 xsltStylesheetPtr xsp;
589 xsp = xsltParseStylesheetDoc(xslt_doc);
592 for (i = 0; i < p->num_records; i++)
594 Z_NamePlusRecord *npr = p->records[i];
595 if (npr->which == Z_NamePlusRecord_databaseRecord)
597 Z_External *r = npr->u.databaseRecord;
598 if (r->which == Z_External_octet)
600 xmlDocPtr res, doc = xmlParseMemory(
601 (char*) r->u.octet_aligned->buf,
602 r->u.octet_aligned->len);
604 res = xsltApplyStylesheet(xsp, doc, 0);
608 xmlDocDumpMemory (res, &out_buf, &out_len);
609 p->records[i]->u.databaseRecord =
610 z_ext_record(odr_encode(), VAL_TEXT_XML,
611 (char*) out_buf, out_len);
617 xsltFreeStylesheet(xsp);
620 void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p)
624 yaz_marc_t mt = yaz_marc_create();
625 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
626 for (i = 0; i < p->num_records; i++)
628 Z_NamePlusRecord *npr = p->records[i];
629 if (npr->which == Z_NamePlusRecord_databaseRecord)
631 Z_External *r = npr->u.databaseRecord;
632 if (r->which == Z_External_octet)
636 if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
637 r->u.octet_aligned->len,
640 yaz_iconv_t cd = yaz_iconv_open("UTF-8", "MARC-8");
641 WRBUF wrbuf = wrbuf_alloc();
644 size_t inbytesleft = rlen;
645 const char *inp = result;
646 while (cd && inbytesleft)
648 size_t outbytesleft = sizeof(outbuf);
652 r = yaz_iconv (cd, (char**) &inp,
654 &outp, &outbytesleft);
655 if (r == (size_t) (-1))
657 int e = yaz_iconv_error(cd);
658 if (e != YAZ_ICONV_E2BIG)
660 yaz_log(LOG_WARN, "conversion failure");
664 wrbuf_write(wrbuf, outbuf, outp - outbuf);
669 npr->u.databaseRecord = z_ext_record(odr_encode(),
673 wrbuf_free(wrbuf, 1);
678 yaz_marc_destroy(mt);
681 void Yaz_Proxy::logtime()
683 if (m_time_tv.tv_sec)
686 gettimeofday(&tv, 0);
687 long diff = (tv.tv_sec - m_time_tv.tv_sec)*1000000 +
688 (tv.tv_usec - m_time_tv.tv_usec);
690 yaz_log(LOG_LOG, "%sElapsed %ld.%03ld", m_session_str,
691 diff/1000000, (diff/1000)%1000);
693 m_time_tv.tv_sec = 0;
694 m_time_tv.tv_usec = 0;
697 int Yaz_Proxy::send_http_response(int code)
699 ODR o = odr_encode();
700 const char *ctype = "text/xml";
701 Z_GDU *gdu = z_get_HTTP_Response(o, code);
702 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
704 hres->version = odr_strdup(o, m_http_version);
705 m_http_keepalive = 0;
706 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
708 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
712 int r = send_GDU(gdu, &len);
717 int Yaz_Proxy::send_srw_response(Z_SRW_PDU *srw_pdu)
719 ODR o = odr_encode();
720 const char *ctype = "text/xml";
721 Z_GDU *gdu = z_get_HTTP_Response(o, 200);
722 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
724 hres->version = odr_strdup(o, m_http_version);
725 z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
726 if (m_http_keepalive)
727 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
729 static Z_SOAP_Handler soap_handlers[2] = {
731 {"http://www.loc.gov/zing/srw/", 0,
732 (Z_SOAP_fun) yaz_srw_codec},
737 Z_SOAP *soap_package = (Z_SOAP*) odr_malloc(o, sizeof(Z_SOAP));
738 soap_package->which = Z_SOAP_generic;
739 soap_package->u.generic =
740 (Z_SOAP_Generic *) odr_malloc(o, sizeof(*soap_package->u.generic));
741 soap_package->u.generic->no = 0;
742 soap_package->u.generic->ns = soap_handlers[0].ns;
743 soap_package->u.generic->p = (void *) srw_pdu;
744 soap_package->ns = m_soap_ns;
745 int ret = z_soap_codec_enc(o, &soap_package,
746 &hres->content_buf, &hres->content_len,
748 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
750 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
754 int r = send_GDU(gdu, &len);
759 int Yaz_Proxy::send_to_srw_client_error(int srw_error)
761 ODR o = odr_encode();
762 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
763 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
765 srw_res->num_diagnostics = 1;
766 srw_res->diagnostics = (Z_SRW_diagnostic *)
767 odr_malloc(o, sizeof(*srw_res->diagnostics));
768 srw_res->diagnostics[0].code = odr_intdup(o, srw_error);
769 srw_res->diagnostics[0].details = 0;
770 return send_srw_response(srw_pdu);
773 int Yaz_Proxy::z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
774 Z_DefaultDiagFormat *ddf)
776 int bib1_code = *ddf->condition;
777 if (bib1_code == 109)
779 srw_res->num_diagnostics = 1;
780 srw_res->diagnostics = (Z_SRW_diagnostic *)
781 odr_malloc(o, sizeof(*srw_res->diagnostics));
782 srw_res->diagnostics[0].code =
783 odr_intdup(o, yaz_diag_bib1_to_srw(*ddf->condition));
784 srw_res->diagnostics[0].details = ddf->u.v2Addinfo;
788 int Yaz_Proxy::send_to_srw_client_ok(int hits, Z_Records *records, int start)
790 ODR o = odr_encode();
791 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
792 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
794 srw_res->numberOfRecords = odr_intdup (o, hits);
795 if (records && records->which == Z_Records_DBOSD)
797 srw_res->num_records =
798 records->u.databaseOrSurDiagnostics->num_records;
800 srw_res->records = (Z_SRW_record *)
801 odr_malloc(o, srw_res->num_records * sizeof(Z_SRW_record));
802 for (i = 0; i < srw_res->num_records; i++)
804 Z_NamePlusRecord *npr = records->u.databaseOrSurDiagnostics->records[i];
805 if (npr->which != Z_NamePlusRecord_databaseRecord)
807 srw_res->records[i].recordSchema = "diagnostic";
808 srw_res->records[i].recordPacking = m_s2z_packing;
809 srw_res->records[i].recordData_buf = "67";
810 srw_res->records[i].recordData_len = 2;
811 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
814 Z_External *r = npr->u.databaseRecord;
815 oident *ent = oid_getentbyoid(r->direct_reference);
816 if (r->which == Z_External_octet && ent->value == VAL_TEXT_XML)
818 srw_res->records[i].recordSchema = "http://www.loc.gov/marcxml/";
819 srw_res->records[i].recordPacking = m_s2z_packing;
820 srw_res->records[i].recordData_buf = (char*)
821 r->u.octet_aligned->buf;
822 srw_res->records[i].recordData_len = r->u.octet_aligned->len;
823 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
827 srw_res->records[i].recordSchema = "diagnostic";
828 srw_res->records[i].recordPacking = m_s2z_packing;
829 srw_res->records[i].recordData_buf = "67";
830 srw_res->records[i].recordData_len = 2;
831 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
835 if (records && records->which == Z_Records_NSD)
838 http_code = z_to_srw_diag(odr_encode(), srw_res,
839 records->u.nonSurrogateDiagnostic);
841 return send_http_response(http_code);
843 return send_srw_response(srw_pdu);
847 int Yaz_Proxy::send_srw_explain()
849 Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
850 Z_SRW_explainResponse *er = res->u.explain_response;
852 Yaz_ProxyConfig *cfg = check_reconfigure();
856 assert (m_proxyTarget);
857 char *b = cfg->get_explain(odr_encode(), 0 /* target */,
861 er->record.recordData_buf = b;
862 er->record.recordData_len = len;
863 er->record.recordPacking = m_s2z_packing;
866 return send_srw_response(res);
869 int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu, int *len)
873 if (apdu->which == Z_APDU_initResponse)
875 Z_InitResponse *res = apdu->u.initResponse;
876 if (*res->result == 0)
878 send_to_srw_client_error(3);
880 else if (!m_s2z_search_apdu)
886 handle_incoming_Z_PDU(m_s2z_search_apdu);
889 else if (m_s2z_search_apdu && apdu->which == Z_APDU_searchResponse)
891 m_s2z_search_apdu = 0;
892 Z_SearchResponse *res = apdu->u.searchResponse;
893 m_s2z_hit_count = *res->resultCount;
894 if (res->records && res->records->which == Z_Records_NSD)
896 send_to_srw_client_ok(0, res->records, 1);
898 else if (m_s2z_present_apdu)
900 handle_incoming_Z_PDU(m_s2z_present_apdu);
904 send_to_srw_client_ok(m_s2z_hit_count, res->records, 1);
907 else if (m_s2z_present_apdu && apdu->which == Z_APDU_presentResponse)
910 *m_s2z_present_apdu->u.presentRequest->resultSetStartPoint;
912 m_s2z_present_apdu = 0;
913 Z_PresentResponse *res = apdu->u.presentResponse;
914 send_to_srw_client_ok(m_s2z_hit_count, res->records, start);
919 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
920 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
922 int r = send_Z_PDU(apdu, len);
929 int Yaz_Proxy::send_to_client(Z_APDU *apdu)
932 int kill_session = 0;
933 if (apdu->which == Z_APDU_searchResponse)
935 Z_SearchResponse *sr = apdu->u.searchResponse;
936 Z_Records *p = sr->records;
937 if (p && p->which == Z_Records_NSD)
939 Z_DiagRec dr, *dr_p = &dr;
940 dr.which = Z_DiagRec_defaultFormat;
941 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
943 *sr->searchStatus = 0;
944 display_diagrecs(&dr_p, 1);
948 if (p && p->which == Z_Records_DBOSD)
951 convert_to_marcxml(p->u.databaseOrSurDiagnostics);
952 convert_xsl(p->u.databaseOrSurDiagnostics);
956 yaz_log(LOG_LOG, "%s%d hits", m_session_str,
958 if (*sr->resultCount < 0)
960 m_invalid_session = 1;
963 *sr->searchStatus = 0;
965 create_nonSurrogateDiagnostics(odr_encode(), 2, 0);
966 *sr->resultCount = 0;
971 else if (apdu->which == Z_APDU_presentResponse)
973 Z_PresentResponse *sr = apdu->u.presentResponse;
974 Z_Records *p = sr->records;
975 if (p && p->which == Z_Records_NSD)
977 Z_DiagRec dr, *dr_p = &dr;
978 dr.which = Z_DiagRec_defaultFormat;
979 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
980 if (*sr->presentStatus == Z_PresentStatus_success)
981 *sr->presentStatus = Z_PresentStatus_failure;
982 display_diagrecs(&dr_p, 1);
984 if (p && p->which == Z_Records_DBOSD)
987 convert_to_marcxml(p->u.databaseOrSurDiagnostics);
988 convert_xsl(p->u.databaseOrSurDiagnostics);
991 int r = send_PDU_convert(apdu, &len);
995 m_bw_stat.add_bytes(len);
1000 m_parent->pre_init();
1004 if (!m_http_keepalive)
1017 int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
1020 int r = send_Z_PDU(apdu, &len);
1021 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
1022 yaz_log (LOG_LOG, "%sSending %s to %s %d bytes",
1024 apdu_name(apdu), get_hostname(), len);
1025 m_bytes_sent += len;
1029 Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
1031 if (apdu->which == Z_APDU_presentRequest)
1033 Z_PresentRequest *pr = apdu->u.presentRequest;
1034 int toget = *pr->numberOfRecordsRequested;
1035 int start = *pr->resultSetStartPoint;
1037 yaz_log(LOG_LOG, "%sPresent %s %d+%d", m_session_str,
1038 pr->resultSetId, start, toget);
1040 if (*m_parent->m_optimize == '0')
1043 if (!m_client->m_last_resultSetId)
1045 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1046 new_apdu->u.presentResponse->records =
1047 create_nonSurrogateDiagnostics(odr_encode(), 30,
1049 send_to_client(new_apdu);
1052 if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
1054 if (start+toget-1 > m_client->m_last_resultCount)
1056 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1057 new_apdu->u.presentResponse->records =
1058 create_nonSurrogateDiagnostics(odr_encode(), 13, 0);
1059 send_to_client(new_apdu);
1062 Z_NamePlusRecordList *npr;
1063 if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
1064 pr->preferredRecordSyntax,
1065 pr->recordComposition))
1067 yaz_log (LOG_LOG, "%sReturned cached records for present request",
1069 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1070 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1072 new_apdu->u.presentResponse->numberOfRecordsReturned
1073 = odr_intdup(odr_encode(), toget);
1075 new_apdu->u.presentResponse->records = (Z_Records*)
1076 odr_malloc(odr_encode(), sizeof(Z_Records));
1077 new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
1078 new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
1079 new_apdu->u.presentResponse->nextResultSetPosition =
1080 odr_intdup(odr_encode(), start+toget);
1082 send_to_client(new_apdu);
1088 if (apdu->which != Z_APDU_searchRequest)
1090 Z_SearchRequest *sr = apdu->u.searchRequest;
1091 Yaz_Z_Query *this_query = new Yaz_Z_Query;
1092 Yaz_Z_Databases this_databases;
1094 this_databases.set(sr->num_databaseNames, (const char **)
1097 this_query->set_Z_Query(sr->query);
1099 char query_str[120];
1100 this_query->print(query_str, sizeof(query_str)-1);
1101 yaz_log(LOG_LOG, "%sSearch %s", m_session_str, query_str);
1103 if (*m_parent->m_optimize != '0' &&
1104 m_client->m_last_ok && m_client->m_last_query &&
1105 m_client->m_last_query->match(this_query) &&
1106 !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
1107 m_client->m_last_databases.match(this_databases))
1110 if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
1111 m_client->m_last_resultCount < *sr->largeSetLowerBound)
1113 Z_NamePlusRecordList *npr;
1114 int toget = *sr->mediumSetPresentNumber;
1115 Z_RecordComposition *comp = 0;
1117 if (toget > m_client->m_last_resultCount)
1118 toget = m_client->m_last_resultCount;
1120 if (sr->mediumSetElementSetNames)
1122 comp = (Z_RecordComposition *)
1123 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1124 comp->which = Z_RecordComp_simple;
1125 comp->u.simple = sr->mediumSetElementSetNames;
1128 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1129 sr->preferredRecordSyntax, comp))
1131 yaz_log (LOG_LOG, "%sReturned cached records for medium set",
1133 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1134 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1135 new_apdu->u.searchResponse->resultCount =
1136 &m_client->m_last_resultCount;
1138 new_apdu->u.searchResponse->numberOfRecordsReturned
1139 = odr_intdup(odr_encode(), toget);
1141 new_apdu->u.searchResponse->presentStatus =
1142 odr_intdup(odr_encode(), Z_PresentStatus_success);
1143 new_apdu->u.searchResponse->records = (Z_Records*)
1144 odr_malloc(odr_encode(), sizeof(Z_Records));
1145 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1146 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1147 new_apdu->u.searchResponse->nextResultSetPosition =
1148 odr_intdup(odr_encode(), toget+1);
1149 send_to_client(new_apdu);
1155 // send present request (medium size)
1156 yaz_log (LOG_LOG, "%sOptimizing search for medium set",
1159 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1160 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1161 pr->referenceId = sr->referenceId;
1162 pr->resultSetId = sr->resultSetName;
1163 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1164 *pr->numberOfRecordsRequested = toget;
1165 pr->recordComposition = comp;
1166 m_client->m_sr_transform = 1;
1170 else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
1171 m_client->m_last_resultCount <= 0)
1173 // large set. Return pseudo-search response immediately
1174 yaz_log (LOG_LOG, "%sOptimizing search for large set",
1176 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1177 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1178 new_apdu->u.searchResponse->resultCount =
1179 &m_client->m_last_resultCount;
1180 send_to_client(new_apdu);
1185 Z_NamePlusRecordList *npr;
1186 int toget = m_client->m_last_resultCount;
1187 Z_RecordComposition *comp = 0;
1189 // send a present request (small set)
1191 if (sr->smallSetElementSetNames)
1193 comp = (Z_RecordComposition *)
1194 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1195 comp->which = Z_RecordComp_simple;
1196 comp->u.simple = sr->smallSetElementSetNames;
1199 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1200 sr->preferredRecordSyntax, comp))
1202 yaz_log (LOG_LOG, "%sReturned cached records for small set",
1204 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1205 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1206 new_apdu->u.searchResponse->resultCount =
1207 &m_client->m_last_resultCount;
1209 new_apdu->u.searchResponse->numberOfRecordsReturned
1210 = odr_intdup(odr_encode(), toget);
1212 new_apdu->u.searchResponse->presentStatus =
1213 odr_intdup(odr_encode(), Z_PresentStatus_success);
1214 new_apdu->u.searchResponse->records = (Z_Records*)
1215 odr_malloc(odr_encode(), sizeof(Z_Records));
1216 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1217 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1218 new_apdu->u.searchResponse->nextResultSetPosition =
1219 odr_intdup(odr_encode(), toget+1);
1220 send_to_client(new_apdu);
1225 yaz_log (LOG_LOG, "%sOptimizing search for small set",
1227 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1228 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1229 pr->referenceId = sr->referenceId;
1230 pr->resultSetId = sr->resultSetName;
1231 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1232 *pr->numberOfRecordsRequested = toget;
1233 pr->recordComposition = comp;
1234 m_client->m_sr_transform = 1;
1239 else // query doesn't match
1241 delete m_client->m_last_query;
1242 m_client->m_last_query = this_query;
1243 m_client->m_last_ok = 0;
1244 m_client->m_cache.clear();
1245 m_client->m_resultSetStartPoint = 0;
1247 xfree (m_client->m_last_resultSetId);
1248 m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
1250 m_client->m_last_databases.set(sr->num_databaseNames,
1251 (const char **) sr->databaseNames);
1257 void Yaz_Proxy::inc_request_no()
1259 char *cp = strchr(m_session_str, ' ');
1262 sprintf(cp+1, "%d ", m_request_no);
1265 void Yaz_Proxy::recv_GDU(Z_GDU *apdu, int len)
1269 m_bytes_recv += len;
1271 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
1272 yaz_log (LOG_DEBUG, "%sReceiving %s from client %d bytes",
1273 m_session_str, gdu_name(apdu), len);
1275 if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
1278 m_bw_stat.add_bytes(len);
1279 m_pdu_stat.add_bytes(1);
1281 gettimeofday(&m_time_tv, 0);
1283 int bw_total = m_bw_stat.get_total();
1284 int pdu_total = m_pdu_stat.get_total();
1289 if (bw_total > m_bw_max)
1291 reduce = (bw_total/m_bw_max);
1296 if (pdu_total > m_pdu_max)
1298 int nreduce = (m_pdu_max >= 60) ? 1 : 60/m_pdu_max;
1299 reduce = (reduce > nreduce) ? reduce : nreduce;
1304 yaz_log(LOG_LOG, "%sdelay=%d bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
1305 m_session_str, reduce, bw_total, pdu_total,
1306 m_bw_max, m_pdu_max);
1308 m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
1309 timeout(reduce); // call us reduce seconds later
1311 else if (apdu->which == Z_GDU_Z3950)
1312 handle_incoming_Z_PDU(apdu->u.z3950);
1313 else if (apdu->which == Z_GDU_HTTP_Request)
1314 handle_incoming_HTTP(apdu->u.HTTP_Request);
1317 void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
1319 if (m_max_record_retrieve)
1321 if (apdu->which == Z_APDU_presentRequest)
1323 Z_PresentRequest *pr = apdu->u.presentRequest;
1324 if (pr->numberOfRecordsRequested &&
1325 *pr->numberOfRecordsRequested > m_max_record_retrieve)
1326 *pr->numberOfRecordsRequested = m_max_record_retrieve;
1331 Z_Records *Yaz_Proxy::create_nonSurrogateDiagnostics(ODR odr,
1333 const char *addinfo)
1335 Z_Records *rec = (Z_Records *)
1336 odr_malloc (odr, sizeof(*rec));
1338 odr_malloc (odr, sizeof(*err));
1339 Z_DiagRec *drec = (Z_DiagRec *)
1340 odr_malloc (odr, sizeof(*drec));
1341 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1342 odr_malloc (odr, sizeof(*dr));
1344 rec->which = Z_Records_NSD;
1345 rec->u.nonSurrogateDiagnostic = dr;
1346 dr->diagnosticSetId =
1347 yaz_oidval_to_z3950oid (odr, CLASS_DIAGSET, VAL_BIB1);
1348 dr->condition = err;
1349 dr->which = Z_DefaultDiagFormat_v2Addinfo;
1350 dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
1354 Z_APDU *Yaz_Proxy::handle_query_transformation(Z_APDU *apdu)
1356 if (apdu->which == Z_APDU_searchRequest &&
1357 apdu->u.searchRequest->query &&
1358 apdu->u.searchRequest->query->which == Z_Query_type_104 &&
1359 apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
1361 Z_RPNQuery *rpnquery = 0;
1362 Z_SearchRequest *sr = apdu->u.searchRequest;
1364 yaz_log(LOG_LOG, "%sCQL: %s", m_session_str,
1365 sr->query->u.type_104->u.cql);
1367 int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
1368 &rpnquery, odr_encode());
1370 yaz_log(LOG_LOG, "%sNo CQL to RPN table", m_session_str);
1372 yaz_log(LOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
1375 sr->query->which = Z_Query_type_1;
1376 sr->query->u.type_1 = rpnquery;
1383 Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
1385 if (apdu->which == Z_APDU_searchRequest)
1387 Z_SearchRequest *sr = apdu->u.searchRequest;
1391 Yaz_ProxyConfig *cfg = check_reconfigure();
1393 err = cfg->check_query(odr_encode(), m_default_target,
1394 sr->query, &addinfo);
1397 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1399 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1400 new_apdu->u.searchResponse->records =
1401 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1402 *new_apdu->u.searchResponse->searchStatus = 0;
1404 send_to_client(new_apdu);
1412 Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
1415 if (apdu->which == Z_APDU_searchRequest)
1417 Z_SearchRequest *sr = apdu->u.searchRequest;
1420 Yaz_ProxyConfig *cfg = check_reconfigure();
1422 Z_RecordComposition rc_temp, *rc = 0;
1423 if (sr->smallSetElementSetNames)
1425 rc_temp.which = Z_RecordComp_simple;
1426 rc_temp.u.simple = sr->smallSetElementSetNames;
1431 err = cfg->check_syntax(odr_encode(),
1433 sr->preferredRecordSyntax, rc,
1434 &addinfo, &m_stylesheet);
1437 sr->preferredRecordSyntax =
1438 yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN, VAL_USMARC);
1443 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1445 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1446 new_apdu->u.searchResponse->records =
1447 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1448 *new_apdu->u.searchResponse->searchStatus = 0;
1450 send_to_client(new_apdu);
1455 else if (apdu->which == Z_APDU_presentRequest)
1457 Z_PresentRequest *pr = apdu->u.presentRequest;
1460 Yaz_ProxyConfig *cfg = check_reconfigure();
1463 err = cfg->check_syntax(odr_encode(), m_default_target,
1464 pr->preferredRecordSyntax,
1465 pr->recordComposition,
1466 &addinfo, &m_stylesheet);
1469 pr->preferredRecordSyntax =
1470 yaz_oidval_to_z3950oid(odr_decode(), CLASS_RECSYN, VAL_USMARC);
1475 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1477 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1478 new_apdu->u.presentResponse->records =
1479 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1480 *new_apdu->u.presentResponse->presentStatus =
1481 Z_PresentStatus_failure;
1483 send_to_client(new_apdu);
1491 Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
1495 Z_ElementSetNames *esn = (Z_ElementSetNames *)
1496 odr_malloc(o, sizeof(Z_ElementSetNames));
1497 esn->which = Z_ElementSetNames_generic;
1498 esn->u.generic = odr_strdup(o, schema);
1502 void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
1507 odr_destroy(m_s2z_odr_init);
1510 if (m_s2z_odr_search)
1512 odr_destroy(m_s2z_odr_search);
1513 m_s2z_odr_search = 0;
1516 m_http_keepalive = 0;
1518 if (!strcmp(hreq->version, "1.0"))
1520 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1521 if (v && !strcmp(v, "Keep-Alive"))
1522 m_http_keepalive = 1;
1524 m_http_keepalive = 0;
1525 m_http_version = "1.0";
1529 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1530 if (v && !strcmp(v, "close"))
1531 m_http_keepalive = 0;
1533 m_http_keepalive = 1;
1534 m_http_version = "1.1";
1537 Z_SRW_PDU *srw_pdu = 0;
1538 Z_SOAP *soap_package = 0;
1540 if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
1542 || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
1545 m_s2z_odr_init = odr_createmem(ODR_ENCODE);
1546 m_s2z_odr_search = odr_createmem(ODR_ENCODE);
1547 m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
1548 m_s2z_init_apdu = 0;
1549 m_s2z_search_apdu = 0;
1550 m_s2z_present_apdu = 0;
1551 if (srw_pdu->which == Z_SRW_searchRetrieve_request)
1553 Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
1555 // set packing for response records ..
1556 if (srw_req->recordPacking &&
1557 !strcmp(srw_req->recordPacking, "xml"))
1558 m_s2z_packing = Z_SRW_recordPacking_XML;
1560 m_s2z_packing = Z_SRW_recordPacking_string;
1562 // prepare search PDU
1563 m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
1564 Z_APDU_searchRequest);
1565 Z_SearchRequest *z_searchRequest =
1566 m_s2z_search_apdu->u.searchRequest;
1568 z_searchRequest->num_databaseNames = 1;
1569 z_searchRequest->databaseNames = (char**)
1570 odr_malloc(m_s2z_odr_search, sizeof(char *));
1571 z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
1574 // query transformation
1575 Z_Query *query = (Z_Query *)
1576 odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
1577 z_searchRequest->query = query;
1579 if (srw_req->query_type == Z_SRW_query_type_cql)
1581 Z_External *ext = (Z_External *)
1582 odr_malloc(m_s2z_odr_search, sizeof(*ext));
1583 ext->direct_reference =
1584 odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
1585 ext->indirect_reference = 0;
1586 ext->descriptor = 0;
1587 ext->which = Z_External_CQL;
1588 ext->u.cql = srw_req->query.cql;
1590 query->which = Z_Query_type_104;
1591 query->u.type_104 = ext;
1593 else if (srw_req->query_type == Z_SRW_query_type_pqf)
1595 Z_RPNQuery *RPNquery;
1596 YAZ_PQF_Parser pqf_parser;
1598 pqf_parser = yaz_pqf_create ();
1600 RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
1601 srw_req->query.pqf);
1604 const char *pqf_msg;
1606 int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
1607 yaz_log(LOG_LOG, "%*s^\n", off+4, "");
1608 yaz_log(LOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
1610 send_to_srw_client_error(10);
1613 query->which = Z_Query_type_1;
1614 query->u.type_1 = RPNquery;
1616 yaz_pqf_destroy (pqf_parser);
1620 send_to_srw_client_error(11);
1625 m_s2z_present_apdu = 0;
1627 if (srw_req->maximumRecords)
1628 max = *srw_req->maximumRecords;
1630 if (srw_req->startRecord)
1631 start = *srw_req->startRecord;
1634 if (start <= 1) // Z39.50 piggyback
1636 *z_searchRequest->smallSetUpperBound = max;
1637 *z_searchRequest->mediumSetPresentNumber = max;
1638 *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
1640 z_searchRequest->preferredRecordSyntax =
1641 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
1643 if (srw_req->recordSchema)
1645 z_searchRequest->smallSetElementSetNames =
1646 z_searchRequest->mediumSetElementSetNames =
1647 mk_esn_from_schema(m_s2z_odr_search,
1648 srw_req->recordSchema);
1651 else // Z39.50 present
1653 m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
1654 Z_APDU_presentRequest);
1655 Z_PresentRequest *z_presentRequest =
1656 m_s2z_present_apdu->u.presentRequest;
1657 *z_presentRequest->resultSetStartPoint = start;
1658 *z_presentRequest->numberOfRecordsRequested = max;
1659 z_presentRequest->preferredRecordSyntax =
1660 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
1662 z_presentRequest->recordComposition =
1663 (Z_RecordComposition *)
1664 odr_malloc(m_s2z_odr_search,
1665 sizeof(Z_RecordComposition));
1666 if (srw_req->recordSchema)
1668 z_presentRequest->recordComposition->which =
1669 Z_RecordComp_simple;
1670 z_presentRequest->recordComposition->u.simple =
1671 mk_esn_from_schema(m_s2z_odr_search,
1672 srw_req->recordSchema);
1678 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
1679 Z_APDU_initRequest);
1681 // prevent m_initRequest_apdu memory from being grabbed
1682 // in Yaz_Proxy::handle_incoming_Z_PDU
1683 m_initRequest_apdu = m_s2z_init_apdu;
1684 handle_incoming_Z_PDU(m_s2z_init_apdu);
1689 handle_incoming_Z_PDU(m_s2z_search_apdu);
1693 else if (srw_pdu->which == Z_SRW_explain_request)
1695 Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
1697 if (srw_req->recordPacking &&
1698 !strcmp(srw_req->recordPacking, "xml"))
1699 m_s2z_packing = Z_SRW_recordPacking_XML;
1701 m_s2z_packing = Z_SRW_recordPacking_string;
1705 yaz_log(LOG_LOG, "handle_incoming: initRequest");
1706 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
1707 Z_APDU_initRequest);
1709 // prevent m_initRequest_apdu memory from being grabbed
1710 // in Yaz_Proxy::handle_incoming_Z_PDU
1711 m_initRequest_apdu = m_s2z_init_apdu;
1712 handle_incoming_Z_PDU(m_s2z_init_apdu);
1720 Z_GDU *p = z_get_HTTP_Response(odr_encode(), 400);
1725 void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
1727 if (!m_client && m_invalid_session)
1729 m_apdu_invalid_session = apdu;
1730 m_mem_invalid_session = odr_extract_mem(odr_decode());
1731 apdu = m_initRequest_apdu;
1734 // Determine our client.
1735 Z_OtherInformation **oi;
1736 get_otherInfoAPDU(apdu, &oi);
1737 m_client = get_client(apdu, get_cookie(oi), get_proxy(oi));
1743 m_client->m_server = this;
1745 if (apdu->which == Z_APDU_initRequest)
1747 if (apdu->u.initRequest->implementationId)
1748 yaz_log(LOG_LOG, "%simplementationId: %s",
1749 m_session_str, apdu->u.initRequest->implementationId);
1750 if (apdu->u.initRequest->implementationName)
1751 yaz_log(LOG_LOG, "%simplementationName: %s",
1752 m_session_str, apdu->u.initRequest->implementationName);
1753 if (apdu->u.initRequest->implementationVersion)
1754 yaz_log(LOG_LOG, "%simplementationVersion: %s",
1755 m_session_str, apdu->u.initRequest->implementationVersion);
1756 if (m_initRequest_apdu == 0)
1758 if (m_initRequest_mem)
1759 nmem_destroy(m_initRequest_mem);
1760 m_initRequest_apdu = apdu;
1761 m_initRequest_mem = odr_extract_mem(odr_decode());
1763 if (m_client->m_init_flag)
1765 if (handle_init_response_for_invalid_session(apdu))
1767 Z_APDU *apdu2 = m_client->m_initResponse;
1768 apdu2->u.initResponse->otherInfo = 0;
1769 if (m_client->m_cookie && *m_client->m_cookie)
1770 set_otherInformationString(apdu2, VAL_COOKIE, 1,
1771 m_client->m_cookie);
1772 apdu2->u.initResponse->referenceId =
1773 apdu->u.initRequest->referenceId;
1774 send_to_client(apdu2);
1777 m_client->m_init_flag = 1;
1779 handle_max_record_retrieve(apdu);
1782 apdu = handle_syntax_validation(apdu);
1785 apdu = handle_query_transformation(apdu);
1788 apdu = handle_query_validation(apdu);
1791 apdu = result_set_optimize(apdu);
1794 m_client->timeout(m_target_idletime); // mark it active even
1795 // though we didn't use it
1799 // delete other info part from PDU before sending to target
1800 get_otherInfoAPDU(apdu, &oi);
1804 if (apdu->which == Z_APDU_presentRequest &&
1805 m_client->m_resultSetStartPoint == 0)
1807 Z_PresentRequest *pr = apdu->u.presentRequest;
1808 m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
1809 m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
1811 m_client->m_resultSetStartPoint = 0;
1813 if (m_client->send_to_target(apdu) < 0)
1820 m_client->m_waiting = 1;
1823 void Yaz_Proxy::connectNotify()
1827 void Yaz_Proxy::shutdown()
1829 m_invalid_session = 0;
1830 // only keep if keep_alive flag is set...
1832 m_client->m_pdu_recv < m_keepalive_limit_pdu &&
1833 m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
1834 m_client->m_waiting == 0)
1836 yaz_log(LOG_LOG, "%sShutdown (client to proxy) keepalive %s",
1838 m_client->get_hostname());
1839 yaz_log(LOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
1840 m_session_str, m_client->m_pdu_recv,
1841 m_client->m_bytes_sent + m_client->m_bytes_recv,
1842 m_keepalive_limit_bw, m_keepalive_limit_pdu);
1843 assert (m_client->m_waiting != 2);
1844 // Tell client (if any) that no server connection is there..
1845 m_client->m_server = 0;
1846 m_invalid_session = 0;
1850 yaz_log (LOG_LOG, "%sShutdown (client to proxy) close %s",
1852 m_client->get_hostname());
1853 assert (m_client->m_waiting != 2);
1858 yaz_log (LOG_LOG, "%sshutdown (client to proxy) bad state",
1864 yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
1868 m_parent->pre_init();
1872 const char *Yaz_ProxyClient::get_session_str()
1876 return m_server->get_session_str();
1879 void Yaz_ProxyClient::shutdown()
1881 yaz_log (LOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
1887 void Yaz_Proxy::failNotify()
1890 yaz_log (LOG_LOG, "%sConnection closed by client",
1895 void Yaz_ProxyClient::failNotify()
1898 m_server->inc_request_no();
1899 yaz_log (LOG_LOG, "%sConnection closed by target %s",
1900 get_session_str(), get_hostname());
1904 void Yaz_ProxyClient::connectNotify()
1906 const char *s = get_session_str();
1907 const char *h = get_hostname();
1908 yaz_log (LOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
1910 timeout(m_target_idletime);
1915 IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
1916 *the_PDU_Observable, int fd)
1918 return new Yaz_ProxyClient(the_PDU_Observable, 0);
1921 Yaz_ProxyClient::~Yaz_ProxyClient()
1926 m_next->m_prev = m_prev;
1927 m_waiting = 2; // for debugging purposes only.
1928 odr_destroy(m_init_odr);
1929 delete m_last_query;
1930 xfree (m_last_resultSetId);
1934 void Yaz_ProxyClient::pre_init_client()
1936 Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
1937 Z_InitRequest *req = apdu->u.initRequest;
1939 ODR_MASK_SET(req->options, Z_Options_search);
1940 ODR_MASK_SET(req->options, Z_Options_present);
1941 ODR_MASK_SET(req->options, Z_Options_namedResultSets);
1942 ODR_MASK_SET(req->options, Z_Options_triggerResourceCtrl);
1943 ODR_MASK_SET(req->options, Z_Options_scan);
1944 ODR_MASK_SET(req->options, Z_Options_sort);
1945 ODR_MASK_SET(req->options, Z_Options_extendedServices);
1946 ODR_MASK_SET(req->options, Z_Options_delSet);
1948 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
1949 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
1950 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_3);
1952 if (send_to_target(apdu) < 0)
1963 void Yaz_Proxy::pre_init()
1966 const char *name = 0;
1967 const char *zurl_in_use[MAX_ZURL_PLEX];
1968 int limit_bw, limit_pdu, limit_req;
1969 int target_idletime, client_idletime;
1971 int keepalive_limit_bw, keepalive_limit_pdu;
1973 const char *cql2rpn = 0;
1974 const char *zeerex = 0;
1976 Yaz_ProxyConfig *cfg = check_reconfigure();
1980 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
1985 for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
1986 &limit_bw, &limit_pdu, &limit_req,
1987 &target_idletime, &client_idletime,
1989 &keepalive_limit_bw,
1990 &keepalive_limit_pdu,
1997 for (j = 0; zurl_in_use[j]; j++)
2003 for (c = m_clientPool; c; c = c->m_next)
2005 if (!strcmp(zurl_in_use[j], c->get_hostname()))
2007 if (c->m_cookie == 0)
2009 if (c->m_server == 0)
2018 yaz_log(LOG_LOG, "%spre-init %s %s use=%d other=%d spare=%d "
2019 "preinit=%d",m_session_str,
2020 name, zurl_in_use[j], in_use, other, spare, pre_init);
2021 if (spare < pre_init)
2023 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
2024 c->m_next = m_clientPool;
2026 c->m_next->m_prev = &c->m_next;
2028 c->m_prev = &m_clientPool;
2030 if (m_log_mask & PROXY_LOG_APDU_SERVER)
2031 c->set_APDU_yazlog(1);
2033 c->set_APDU_yazlog(0);
2035 if (c->client(zurl_in_use[j]))
2043 c->m_target_idletime = target_idletime;
2044 c->m_seqno = m_seqno++;
2051 void Yaz_Proxy::timeoutNotify()
2057 timeout(m_client_idletime);
2058 Z_GDU *apdu = m_bw_hold_PDU;
2061 if (apdu->which == Z_GDU_Z3950)
2062 handle_incoming_Z_PDU(apdu->u.z3950);
2063 else if (apdu->which == Z_GDU_HTTP_Request)
2064 handle_incoming_HTTP(apdu->u.HTTP_Request);
2070 yaz_log (LOG_LOG, "%sTimeout (client to proxy)", m_session_str);
2081 void Yaz_ProxyClient::timeoutNotify()
2084 m_server->inc_request_no();
2086 yaz_log (LOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
2093 Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
2094 Yaz_Proxy *parent) :
2095 Yaz_Z_Assoc (the_PDU_Observable)
2102 m_last_resultSetId = 0;
2103 m_last_resultCount = 0;
2107 m_init_odr = odr_createmem (ODR_DECODE);
2109 m_resultSetStartPoint = 0;
2110 m_bytes_sent = m_bytes_recv = 0;
2114 m_target_idletime = 600;
2118 const char *Yaz_Proxy::option(const char *name, const char *value)
2120 if (!strcmp (name, "optimize")) {
2123 m_optimize = xstrdup (value);
2130 void Yaz_ProxyClient::recv_HTTP_response(Z_HTTP_Response *apdu, int len)
2135 void Yaz_ProxyClient::recv_GDU(Z_GDU *apdu, int len)
2137 if (apdu->which == Z_GDU_Z3950)
2138 recv_Z_PDU(apdu->u.z3950, len);
2139 else if (apdu->which == Z_GDU_HTTP_Response)
2140 recv_HTTP_response(apdu->u.HTTP_Response, len);
2145 int Yaz_Proxy::handle_init_response_for_invalid_session(Z_APDU *apdu)
2147 if (!m_invalid_session)
2149 m_invalid_session = 0;
2150 handle_incoming_Z_PDU(m_apdu_invalid_session);
2151 assert (m_mem_invalid_session);
2152 nmem_destroy(m_mem_invalid_session);
2153 m_mem_invalid_session = 0;
2157 void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
2159 m_bytes_recv += len;
2162 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
2163 yaz_log (LOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
2164 apdu_name(apdu), get_hostname(), len);
2165 if (apdu->which == Z_APDU_initResponse)
2167 if (!m_server) // if this is a pre init session , check for more
2169 NMEM nmem = odr_extract_mem (odr_decode());
2170 odr_reset (m_init_odr);
2171 nmem_transfer (m_init_odr->mem, nmem);
2172 m_initResponse = apdu;
2174 Z_InitResponse *ir = apdu->u.initResponse;
2175 char *im0 = ir->implementationName;
2178 odr_malloc(m_init_odr, 20 + (im0 ? strlen(im0) : 0));
2185 strcat(im1, "(YAZ Proxy)");
2186 ir->implementationName = im1;
2188 nmem_destroy (nmem);
2190 if (m_server && m_server->handle_init_response_for_invalid_session(apdu))
2193 if (apdu->which == Z_APDU_searchResponse)
2195 Z_SearchResponse *sr = apdu->u.searchResponse;
2196 m_last_resultCount = *sr->resultCount;
2197 int status = *sr->searchStatus;
2198 if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
2202 if (sr->records && sr->records->which == Z_Records_DBOSD)
2204 m_cache.add(odr_decode(),
2205 sr->records->u.databaseOrSurDiagnostics, 1,
2210 if (apdu->which == Z_APDU_presentResponse)
2212 Z_PresentResponse *pr = apdu->u.presentResponse;
2216 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
2217 Z_SearchResponse *sr = new_apdu->u.searchResponse;
2218 sr->referenceId = pr->referenceId;
2219 *sr->resultCount = m_last_resultCount;
2220 sr->records = pr->records;
2221 sr->nextResultSetPosition = pr->nextResultSetPosition;
2222 sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
2226 pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
2228 m_cache.add(odr_decode(),
2229 pr->records->u.databaseOrSurDiagnostics,
2230 m_resultSetStartPoint, -1);
2231 m_resultSetStartPoint = 0;
2235 set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
2238 m_server->send_to_client(apdu);
2240 if (apdu->which == Z_APDU_close)
2246 int Yaz_Proxy::server(const char *addr)
2248 int r = Yaz_Z_Assoc::server(addr);
2251 yaz_log(LOG_LOG, "%sStarted listener on %s", m_session_str, addr);