1 /* $Id: yaz-proxy.cpp,v 1.5 2004-08-10 09:02:16 adam Exp $
2 Copyright (c) 1998-2004, Index Data.
4 This file is part of the yaz-proxy.
6 YAZ proxy is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2, or (at your option) any later
11 YAZ proxy is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with YAZ proxy; see the file LICENSE. If not, write to the
18 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
33 #include <sys/types.h>
37 #include <yaz/marcdisp.h>
38 #include <yaz/yaz-iconv.h>
40 #include <yaz/diagbib1.h>
41 #include <yazproxy/proxy.h>
42 #include <yaz/pquery.h>
45 #include <libxml/parser.h>
46 #include <libxml/tree.h>
47 #include <libxslt/xsltutils.h>
48 #include <libxslt/transform.h>
51 static const char *apdu_name(Z_APDU *apdu)
55 case Z_APDU_initRequest:
57 case Z_APDU_initResponse:
58 return "initResponse";
59 case Z_APDU_searchRequest:
60 return "searchRequest";
61 case Z_APDU_searchResponse:
62 return "searchResponse";
63 case Z_APDU_presentRequest:
64 return "presentRequest";
65 case Z_APDU_presentResponse:
66 return "presentResponse";
67 case Z_APDU_deleteResultSetRequest:
68 return "deleteResultSetRequest";
69 case Z_APDU_deleteResultSetResponse:
70 return "deleteResultSetResponse";
71 case Z_APDU_scanRequest:
73 case Z_APDU_scanResponse:
74 return "scanResponse";
75 case Z_APDU_sortRequest:
77 case Z_APDU_sortResponse:
78 return "sortResponse";
79 case Z_APDU_extendedServicesRequest:
80 return "extendedServicesRequest";
81 case Z_APDU_extendedServicesResponse:
82 return "extendedServicesResponse";
89 static const char *gdu_name(Z_GDU *gdu)
94 return apdu_name(gdu->u.z3950);
95 case Z_GDU_HTTP_Request:
96 return "HTTP Request";
97 case Z_GDU_HTTP_Response:
98 return "HTTP Response";
100 return "Unknown request/response";
103 Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable,
105 Yaz_Z_Assoc(the_PDU_Observable), m_bw_stat(60), m_pdu_stat(60)
107 m_PDU_Observable = the_PDU_Observable;
112 m_keepalive_limit_bw = 500000;
113 m_keepalive_limit_pdu = 1000;
115 m_default_target = 0;
116 m_proxy_authentication = 0;
120 m_client_idletime = 600;
121 m_target_idletime = 600;
122 m_optimize = xstrdup ("1");
123 strcpy(m_session_str, "0 ");
130 m_max_record_retrieve = 0;
134 m_invalid_session = 0;
136 m_referenceId_mem = nmem_create();
139 m_stylesheet_xsp = 0;
140 m_stylesheet_nprl = 0;
141 m_s2z_stylesheet = 0;
146 m_initRequest_apdu = 0;
147 m_initRequest_mem = 0;
148 m_initRequest_preferredMessageSize = 0;
149 m_initRequest_maximumRecordSize = 0;
150 m_initRequest_options = 0;
151 m_initRequest_version = 0;
152 m_apdu_invalid_session = 0;
153 m_mem_invalid_session = 0;
155 m_s2z_odr_search = 0;
157 m_s2z_search_apdu = 0;
158 m_s2z_present_apdu = 0;
159 m_http_keepalive = 0;
162 m_s2z_packing = Z_SRW_recordPacking_string;
163 #if HAVE_GETTIMEOFDAY
164 m_time_tv = xmalloc(sizeof(struct timeval));
165 struct timeval *tv = (struct timeval *) m_time_tv;
175 Yaz_Proxy::~Yaz_Proxy()
177 yaz_log(LOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
178 m_bytes_sent, m_bytes_recv);
179 nmem_destroy(m_initRequest_mem);
180 nmem_destroy(m_mem_invalid_session);
181 nmem_destroy(m_referenceId_mem);
183 xfree (m_proxyTarget);
184 xfree (m_default_target);
185 xfree (m_proxy_authentication);
189 if (m_stylesheet_xsp)
190 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
195 xfree (m_backend_type);
197 odr_destroy(m_s2z_odr_init);
198 if (m_s2z_odr_search)
199 odr_destroy(m_s2z_odr_search);
205 int Yaz_Proxy::set_config(const char *config)
208 m_config = new Yaz_ProxyConfig();
209 xfree(m_config_fname);
210 m_config_fname = xstrdup(config);
211 int r = m_config->read_xml(config);
213 m_config->get_generic_info(&m_log_mask, &m_max_clients);
217 void Yaz_Proxy::set_default_target(const char *target)
219 xfree (m_default_target);
220 m_default_target = 0;
222 m_default_target = (char *) xstrdup (target);
225 void Yaz_Proxy::set_proxy_authentication (const char *auth)
227 xfree (m_proxy_authentication);
228 m_proxy_authentication = 0;
230 m_proxy_authentication = (char *) xstrdup (auth);
233 Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
236 return m_parent->check_reconfigure();
238 Yaz_ProxyConfig *cfg = m_config;
241 yaz_log(LOG_LOG, "reconfigure");
243 if (m_config_fname && cfg)
245 yaz_log(LOG_LOG, "reconfigure config %s", m_config_fname);
246 int r = cfg->read_xml(m_config_fname);
248 yaz_log(LOG_WARN, "reconfigure failed");
252 cfg->get_generic_info(&m_log_mask, &m_max_clients);
256 yaz_log(LOG_LOG, "reconfigure");
262 IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
263 *the_PDU_Observable, int fd)
266 Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable, this);
267 new_proxy->m_config = 0;
268 new_proxy->m_config_fname = 0;
269 new_proxy->timeout(m_client_idletime);
270 new_proxy->m_target_idletime = m_target_idletime;
271 new_proxy->set_default_target(m_default_target);
272 new_proxy->m_max_clients = m_max_clients;
273 new_proxy->m_log_mask = m_log_mask;
274 new_proxy->set_APDU_log(get_APDU_log());
275 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
276 new_proxy->set_APDU_yazlog(1);
278 new_proxy->set_APDU_yazlog(0);
279 new_proxy->set_proxy_authentication(m_proxy_authentication);
280 sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
282 yaz_log (LOG_LOG, "%sNew session %s", new_proxy->m_session_str,
283 the_PDU_Observable->getpeername());
287 char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
290 Z_OtherInformationUnit *oi;
292 ent.proto = PROTO_Z3950;
293 ent.oclass = CLASS_USERINFO;
294 ent.value = (oid_value) VAL_COOKIE;
295 assert (oid_ent_to_oid (&ent, oid));
297 if (oid_ent_to_oid (&ent, oid) &&
298 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
299 oi->which == Z_OtherInfo_characterInfo)
300 return oi->information.characterInfo;
304 char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
307 Z_OtherInformationUnit *oi;
309 ent.proto = PROTO_Z3950;
310 ent.oclass = CLASS_USERINFO;
311 ent.value = (oid_value) VAL_PROXY;
312 if (oid_ent_to_oid (&ent, oid) &&
313 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
314 oi->which == Z_OtherInfo_characterInfo)
315 return oi->information.characterInfo;
319 const char *Yaz_Proxy::load_balance(const char **url)
321 int zurl_in_use[MAX_ZURL_PLEX];
322 int zurl_in_spare[MAX_ZURL_PLEX];
326 for (i = 0; i<MAX_ZURL_PLEX; i++)
329 zurl_in_spare[i] = 0;
331 for (c = m_parent->m_clientPool; c; c = c->m_next)
333 for (i = 0; url[i]; i++)
334 if (!strcmp(url[i], c->get_hostname()))
337 if (c->m_cookie == 0 && c->m_server == 0 && c->m_waiting == 0)
341 int min_use = 100000;
342 int spare_for_min = 0;
344 const char *ret_min = 0;
345 const char *ret_spare = 0;
346 for (i = 0; url[i]; i++)
348 yaz_log(LOG_DEBUG, "%szurl=%s use=%d spare=%d",
349 m_session_str, url[i], zurl_in_use[i], zurl_in_spare[i]);
350 if (min_use > zurl_in_use[i])
353 min_use = zurl_in_use[i];
354 spare_for_min = zurl_in_spare[i];
356 if (max_spare < zurl_in_spare[i])
359 max_spare = zurl_in_spare[i];
362 // use the one with minimum connections if spare is > 3
363 if (spare_for_min > 3)
365 // use one with most spares (if any)
371 Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
372 const char *proxy_host)
375 Yaz_Proxy *parent = m_parent;
376 Yaz_ProxyClient *c = m_client;
380 const char *url[MAX_ZURL_PLEX];
381 Yaz_ProxyConfig *cfg = check_reconfigure();
385 /* only to be enabled for debugging... */
386 if (!strcmp(proxy_host, "stop"))
389 xfree(m_default_target);
390 m_default_target = xstrdup(proxy_host);
391 proxy_host = m_default_target;
393 int client_idletime = -1;
394 const char *cql2rpn_fname = 0;
395 url[0] = m_default_target;
400 cfg->get_target_info(proxy_host, url, &m_bw_max,
401 &m_pdu_max, &m_max_record_retrieve,
402 &m_target_idletime, &client_idletime,
403 &parent->m_max_clients,
404 &m_keepalive_limit_bw,
405 &m_keepalive_limit_pdu,
409 if (client_idletime != -1)
411 m_client_idletime = client_idletime;
412 timeout(m_client_idletime);
415 m_cql2rpn.set_pqf_file(cql2rpn_fname);
418 yaz_log(LOG_LOG, "%sNo default target", m_session_str);
421 // we don't handle multiplexing for cookie session, so we just
422 // pick the first one in this case (anonymous users will be able
423 // to use any backend)
424 if (cookie && *cookie)
425 m_proxyTarget = (char*) xstrdup(url[0]);
427 m_proxyTarget = (char*) xstrdup(load_balance(url));
429 if (cookie && *cookie)
430 { // search in sessions with a cookie
431 for (c = parent->m_clientPool; c; c = c->m_next)
434 assert (*c->m_prev == c);
435 if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
436 !strcmp(m_proxyTarget, c->get_hostname()))
439 // The following handles "cancel"
440 // If connection is busy (waiting for PDU) and
441 // we have an initRequest we can safely do re-open
442 if (c->m_waiting && apdu->which == Z_APDU_initRequest)
444 yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
451 c->m_last_resultCount = 0;
452 c->m_sr_transform = 0;
454 c->m_resultSetStartPoint = 0;
455 c->m_target_idletime = m_target_idletime;
456 if (c->client(m_proxyTarget))
463 c->m_seqno = parent->m_seqno;
464 if (c->m_server && c->m_server != this)
465 c->m_server->m_client = 0;
468 yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
475 // don't have a client session yet. Search in session w/o cookie
476 for (c = parent->m_clientPool; c; c = c->m_next)
479 assert (*c->m_prev == c);
480 if (c->m_server == 0 && c->m_cookie == 0 &&
482 !strcmp(m_proxyTarget, c->get_hostname()))
485 yaz_log (LOG_LOG, "%sREUSE %d %s",
486 m_session_str, parent->m_seqno, c->get_hostname());
488 c->m_seqno = parent->m_seqno;
489 assert(c->m_server == 0);
492 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
493 c->set_APDU_yazlog(1);
495 c->set_APDU_yazlog(0);
507 if (apdu->which != Z_APDU_initRequest)
509 yaz_log (LOG_LOG, "%sno init request as first PDU", m_session_str);
512 Z_InitRequest *initRequest = apdu->u.initRequest;
514 if (!initRequest->idAuthentication)
516 if (m_proxy_authentication)
518 initRequest->idAuthentication =
519 (Z_IdAuthentication *)
520 odr_malloc (odr_encode(),
521 sizeof(*initRequest->idAuthentication));
522 initRequest->idAuthentication->which =
523 Z_IdAuthentication_open;
524 initRequest->idAuthentication->u.open =
525 odr_strdup (odr_encode(), m_proxy_authentication);
528 // go through list of clients - and find the lowest/oldest one.
529 Yaz_ProxyClient *c_min = 0;
531 int no_of_clients = 0;
532 if (parent->m_clientPool)
533 yaz_log (LOG_DEBUG, "Existing sessions");
534 for (c = parent->m_clientPool; c; c = c->m_next)
536 yaz_log (LOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
537 c->m_waiting, c->get_hostname(),
538 c->m_cookie ? c->m_cookie : "");
540 if (min_seq < 0 || c->m_seqno < min_seq)
542 min_seq = c->m_seqno;
546 if (no_of_clients >= parent->m_max_clients)
549 if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
551 yaz_log (LOG_LOG, "%sMAXCLIENTS %d Destroy %d",
552 m_session_str, parent->m_max_clients, c->m_seqno);
553 if (c->m_server && c->m_server != this)
559 yaz_log (LOG_LOG, "%sMAXCLIENTS %d Reuse %d %d %s",
560 m_session_str, parent->m_max_clients,
561 c->m_seqno, parent->m_seqno, c->get_hostname());
565 c->m_cookie = xstrdup(cookie);
566 c->m_seqno = parent->m_seqno;
567 if (c->m_server && c->m_server != this)
569 c->m_server->m_client = 0;
573 c->m_target_idletime = m_target_idletime;
574 c->timeout(m_target_idletime);
576 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
577 c->set_APDU_yazlog(1);
579 c->set_APDU_yazlog(0);
586 yaz_log (LOG_LOG, "%sNEW %d %s",
587 m_session_str, parent->m_seqno, m_proxyTarget);
588 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
589 c->m_next = parent->m_clientPool;
591 c->m_next->m_prev = &c->m_next;
592 parent->m_clientPool = c;
593 c->m_prev = &parent->m_clientPool;
599 c->m_cookie = xstrdup(cookie);
601 c->m_seqno = parent->m_seqno;
603 c->m_last_resultCount = 0;
606 c->m_sr_transform = 0;
608 c->m_resultSetStartPoint = 0;
610 if (c->client(m_proxyTarget))
615 c->m_target_idletime = m_target_idletime;
618 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
619 c->set_APDU_yazlog(1);
621 c->set_APDU_yazlog(0);
623 yaz_log (LOG_DEBUG, "get_client 3 %p %p", this, c);
627 void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
630 for (i = 0; i<num; i++)
633 Z_DefaultDiagFormat *r;
634 Z_DiagRec *p = pp[i];
635 if (p->which != Z_DiagRec_defaultFormat)
637 yaz_log(LOG_LOG, "%sError no diagnostics", m_session_str);
641 r = p->u.defaultFormat;
642 if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
643 ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
644 yaz_log(LOG_LOG, "%sError unknown diagnostic set", m_session_str);
647 case Z_DefaultDiagFormat_v2Addinfo:
648 yaz_log(LOG_LOG, "%sError %d %s:%s",
650 *r->condition, diagbib1_str(*r->condition),
653 case Z_DefaultDiagFormat_v3Addinfo:
654 yaz_log(LOG_LOG, "%sError %d %s:%s",
656 *r->condition, diagbib1_str(*r->condition),
663 int Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p, Z_APDU *apdu)
665 if (!m_stylesheet_xsp || p->num_records <= 0)
666 return 0; /* no XSLT to be done ... */
668 m_stylesheet_offset = 0;
669 m_stylesheet_nprl = p;
670 m_stylesheet_apdu = apdu;
675 void Yaz_Proxy::convert_xsl_delay()
677 Z_NamePlusRecord *npr = m_stylesheet_nprl->records[m_stylesheet_offset];
679 if (npr->which == Z_NamePlusRecord_databaseRecord)
681 Z_External *r = npr->u.databaseRecord;
682 if (r->which == Z_External_octet)
685 fwrite((char*) r->u.octet_aligned->buf, 1, r->u.octet_aligned->len, stdout);
687 xmlDocPtr res, doc = xmlParseMemory(
688 (char*) r->u.octet_aligned->buf,
689 r->u.octet_aligned->len);
692 yaz_log(LOG_LOG, "%sXSLT convert %d",
693 m_session_str, m_stylesheet_offset);
694 res = xsltApplyStylesheet((xsltStylesheetPtr) m_stylesheet_xsp,
701 xmlDocDumpFormatMemory (res, &out_buf, &out_len, 1);
703 m_stylesheet_nprl->records[m_stylesheet_offset]->
705 z_ext_record(odr_encode(), VAL_TEXT_XML,
706 (char*) out_buf, out_len);
715 m_stylesheet_offset++;
716 if (m_stylesheet_offset == m_stylesheet_nprl->num_records)
718 m_stylesheet_nprl = 0;
720 if (m_stylesheet_xsp)
721 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
723 m_stylesheet_xsp = 0;
724 timeout(m_client_idletime);
725 send_PDU_convert(m_stylesheet_apdu);
731 void Yaz_Proxy::convert_to_frontend_type(Z_NamePlusRecordList *p)
733 if (m_frontend_type != VAL_NONE)
736 for (i = 0; i < p->num_records; i++)
738 Z_NamePlusRecord *npr = p->records[i];
739 if (npr->which == Z_NamePlusRecord_databaseRecord)
741 Z_External *r = npr->u.databaseRecord;
742 if (r->which == Z_External_octet)
744 npr->u.databaseRecord =
745 z_ext_record(odr_encode(),
747 (char*) r->u.octet_aligned->buf,
748 r->u.octet_aligned->len);
755 void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p)
759 yaz_iconv_t cd = yaz_iconv_open("UTF-8", "MARC-8");
760 yaz_marc_t mt = yaz_marc_create();
761 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
762 yaz_marc_iconv(mt, cd);
763 for (i = 0; i < p->num_records; i++)
765 Z_NamePlusRecord *npr = p->records[i];
766 if (npr->which == Z_NamePlusRecord_databaseRecord)
768 Z_External *r = npr->u.databaseRecord;
769 if (r->which == Z_External_octet)
773 if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
774 r->u.octet_aligned->len,
777 npr->u.databaseRecord = z_ext_record(odr_encode(),
786 yaz_marc_destroy(mt);
789 void Yaz_Proxy::logtime()
791 #if HAVE_GETTIMEOFDAY
792 struct timeval *tv = (struct timeval*) m_time_tv;
796 gettimeofday(&tv1, 0);
797 long diff = (tv1.tv_sec - tv->tv_sec)*1000000 +
798 (tv1.tv_usec - tv->tv_usec);
800 yaz_log(LOG_LOG, "%sElapsed %ld.%03ld", m_session_str,
801 diff/1000000, (diff/1000)%1000);
808 int Yaz_Proxy::send_http_response(int code)
810 ODR o = odr_encode();
811 Z_GDU *gdu = z_get_HTTP_Response(o, code);
812 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
814 hres->version = odr_strdup(o, m_http_version);
815 if (m_http_keepalive)
816 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
820 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
822 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
826 int r = send_GDU(gdu, &len);
828 m_bw_stat.add_bytes(len);
833 int Yaz_Proxy::send_srw_response(Z_SRW_PDU *srw_pdu)
835 ODR o = odr_encode();
836 const char *ctype = "text/xml";
837 Z_GDU *gdu = z_get_HTTP_Response(o, 200);
838 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
840 hres->version = odr_strdup(o, m_http_version);
841 z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
842 if (m_http_keepalive)
843 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
847 static Z_SOAP_Handler soap_handlers[2] = {
849 {"http://www.loc.gov/zing/srw/", 0,
850 (Z_SOAP_fun) yaz_srw_codec},
855 Z_SOAP *soap_package = (Z_SOAP*) odr_malloc(o, sizeof(Z_SOAP));
856 soap_package->which = Z_SOAP_generic;
857 soap_package->u.generic =
858 (Z_SOAP_Generic *) odr_malloc(o, sizeof(*soap_package->u.generic));
859 soap_package->u.generic->no = 0;
860 soap_package->u.generic->ns = soap_handlers[0].ns;
861 soap_package->u.generic->p = (void *) srw_pdu;
862 soap_package->ns = m_soap_ns;
863 z_soap_codec_enc_xsl(o, &soap_package,
864 &hres->content_buf, &hres->content_len,
865 soap_handlers, 0, m_s2z_stylesheet);
866 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
868 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
872 int r = send_GDU(gdu, &len);
874 m_bw_stat.add_bytes(len);
879 int Yaz_Proxy::send_to_srw_client_error(int srw_error, const char *add)
881 ODR o = odr_encode();
882 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
883 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
885 srw_res->num_diagnostics = 1;
886 srw_res->diagnostics = (Z_SRW_diagnostic *)
887 odr_malloc(o, sizeof(*srw_res->diagnostics));
888 yaz_mk_std_diagnostic(o, srw_res->diagnostics, srw_error, add);
889 return send_srw_response(srw_pdu);
892 int Yaz_Proxy::z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
893 Z_DefaultDiagFormat *ddf)
895 int bib1_code = *ddf->condition;
896 if (bib1_code == 109)
898 srw_res->num_diagnostics = 1;
899 srw_res->diagnostics = (Z_SRW_diagnostic *)
900 odr_malloc(o, sizeof(*srw_res->diagnostics));
901 yaz_mk_std_diagnostic(o, srw_res->diagnostics,
902 yaz_diag_bib1_to_srw(*ddf->condition),
907 int Yaz_Proxy::send_to_srw_client_ok(int hits, Z_Records *records, int start)
909 ODR o = odr_encode();
910 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
911 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
913 srw_res->numberOfRecords = odr_intdup (o, hits);
914 if (records && records->which == Z_Records_DBOSD)
916 srw_res->num_records =
917 records->u.databaseOrSurDiagnostics->num_records;
919 srw_res->records = (Z_SRW_record *)
920 odr_malloc(o, srw_res->num_records * sizeof(Z_SRW_record));
921 for (i = 0; i < srw_res->num_records; i++)
923 Z_NamePlusRecord *npr = records->u.databaseOrSurDiagnostics->records[i];
924 if (npr->which != Z_NamePlusRecord_databaseRecord)
926 srw_res->records[i].recordSchema = "diagnostic";
927 srw_res->records[i].recordPacking = m_s2z_packing;
928 srw_res->records[i].recordData_buf = "67";
929 srw_res->records[i].recordData_len = 2;
930 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
933 Z_External *r = npr->u.databaseRecord;
934 oident *ent = oid_getentbyoid(r->direct_reference);
935 if (r->which == Z_External_octet && ent->value == VAL_TEXT_XML)
937 srw_res->records[i].recordSchema = m_schema;
938 srw_res->records[i].recordPacking = m_s2z_packing;
939 srw_res->records[i].recordData_buf = (char*)
940 r->u.octet_aligned->buf;
941 srw_res->records[i].recordData_len = r->u.octet_aligned->len;
942 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
946 srw_res->records[i].recordSchema = "diagnostic";
947 srw_res->records[i].recordPacking = m_s2z_packing;
948 srw_res->records[i].recordData_buf = "67";
949 srw_res->records[i].recordData_len = 2;
950 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
954 if (records && records->which == Z_Records_NSD)
957 http_code = z_to_srw_diag(odr_encode(), srw_res,
958 records->u.nonSurrogateDiagnostic);
960 return send_http_response(http_code);
962 return send_srw_response(srw_pdu);
966 int Yaz_Proxy::send_srw_explain_response(Z_SRW_diagnostic *diagnostics,
969 Yaz_ProxyConfig *cfg = check_reconfigure();
973 char *b = cfg->get_explain(odr_encode(), 0 /* target */,
974 m_s2z_database, &len);
977 Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
978 Z_SRW_explainResponse *er = res->u.explain_response;
980 er->record.recordData_buf = b;
981 er->record.recordData_len = len;
982 er->record.recordPacking = m_s2z_packing;
983 er->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
985 er->diagnostics = diagnostics;
986 er->num_diagnostics = num_diagnostics;
987 return send_srw_response(res);
990 return send_http_response(404);
993 int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu)
997 if (apdu->which == Z_APDU_initResponse)
999 Z_InitResponse *res = apdu->u.initResponse;
1000 if (*res->result == 0)
1002 send_to_srw_client_error(3, 0);
1004 else if (!m_s2z_search_apdu)
1006 send_srw_explain_response(0, 0);
1010 handle_incoming_Z_PDU(m_s2z_search_apdu);
1013 else if (m_s2z_search_apdu && apdu->which == Z_APDU_searchResponse)
1015 m_s2z_search_apdu = 0;
1016 Z_SearchResponse *res = apdu->u.searchResponse;
1017 m_s2z_hit_count = *res->resultCount;
1018 if (res->records && res->records->which == Z_Records_NSD)
1020 send_to_srw_client_ok(0, res->records, 1);
1022 else if (m_s2z_present_apdu && m_s2z_hit_count > 0)
1025 Z_PresentRequest *pr = m_s2z_present_apdu->u.presentRequest;
1027 if (*pr->resultSetStartPoint <= m_s2z_hit_count)
1029 if (*pr->numberOfRecordsRequested+ *pr->resultSetStartPoint
1031 *pr->numberOfRecordsRequested =
1032 1 + m_s2z_hit_count - *pr->resultSetStartPoint;
1034 handle_incoming_Z_PDU(m_s2z_present_apdu);
1038 m_s2z_present_apdu = 0;
1039 send_to_srw_client_ok(m_s2z_hit_count, res->records, 1);
1042 else if (m_s2z_present_apdu && apdu->which == Z_APDU_presentResponse)
1045 *m_s2z_present_apdu->u.presentRequest->resultSetStartPoint;
1047 m_s2z_present_apdu = 0;
1048 Z_PresentResponse *res = apdu->u.presentResponse;
1049 send_to_srw_client_ok(m_s2z_hit_count, res->records, start);
1055 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1056 yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
1058 int r = send_Z_PDU(apdu, &len);
1059 m_bytes_sent += len;
1060 m_bw_stat.add_bytes(len);
1067 int Yaz_Proxy::send_to_client(Z_APDU *apdu)
1069 int kill_session = 0;
1070 Z_ReferenceId **new_id = get_referenceIdP(apdu);
1073 *new_id = m_referenceId;
1075 if (apdu->which == Z_APDU_searchResponse)
1077 Z_SearchResponse *sr = apdu->u.searchResponse;
1078 Z_Records *p = sr->records;
1079 if (p && p->which == Z_Records_NSD)
1081 Z_DiagRec dr, *dr_p = &dr;
1082 dr.which = Z_DiagRec_defaultFormat;
1083 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
1085 *sr->searchStatus = 0;
1086 display_diagrecs(&dr_p, 1);
1090 if (p && p->which == Z_Records_DBOSD)
1093 convert_to_frontend_type(p->u.databaseOrSurDiagnostics);
1095 convert_to_marcxml(p->u.databaseOrSurDiagnostics);
1096 if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
1100 if (sr->resultCount)
1102 yaz_log(LOG_LOG, "%s%d hits", m_session_str,
1104 if (*sr->resultCount < 0)
1106 m_invalid_session = 1;
1109 *sr->searchStatus = 0;
1111 create_nonSurrogateDiagnostics(odr_encode(), 2, 0);
1112 *sr->resultCount = 0;
1117 else if (apdu->which == Z_APDU_presentResponse)
1119 Z_PresentResponse *sr = apdu->u.presentResponse;
1120 Z_Records *p = sr->records;
1121 if (p && p->which == Z_Records_NSD)
1123 Z_DiagRec dr, *dr_p = &dr;
1124 dr.which = Z_DiagRec_defaultFormat;
1125 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
1126 if (*sr->presentStatus == Z_PresentStatus_success)
1127 *sr->presentStatus = Z_PresentStatus_failure;
1128 display_diagrecs(&dr_p, 1);
1130 if (p && p->which == Z_Records_DBOSD)
1133 convert_to_frontend_type(p->u.databaseOrSurDiagnostics);
1135 convert_to_marcxml(p->u.databaseOrSurDiagnostics);
1136 if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
1140 else if (apdu->which == Z_APDU_initResponse)
1142 if (m_initRequest_options)
1145 (Odr_bitmask *)odr_malloc(odr_encode(),
1146 sizeof(Odr_bitmask));
1147 ODR_MASK_ZERO(nopt);
1150 for (i = 0; i<24; i++)
1151 if (ODR_MASK_GET(m_initRequest_options, i) &&
1152 ODR_MASK_GET(apdu->u.initResponse->options, i))
1153 ODR_MASK_SET(nopt, i);
1154 apdu->u.initResponse->options = nopt;
1156 if (m_initRequest_version)
1158 Z_ProtocolVersion *nopt =
1159 (Odr_bitmask *)odr_malloc(odr_encode(),
1160 sizeof(Odr_bitmask));
1161 ODR_MASK_ZERO(nopt);
1164 for (i = 0; i<8; i++)
1165 if (ODR_MASK_GET(m_initRequest_version, i) &&
1166 ODR_MASK_GET(apdu->u.initResponse->protocolVersion, i))
1167 ODR_MASK_SET(nopt, i);
1168 apdu->u.initResponse->protocolVersion = nopt;
1170 apdu->u.initResponse->preferredMessageSize =
1171 odr_intdup(odr_encode(),
1172 m_client->m_initResponse_preferredMessageSize >
1173 m_initRequest_preferredMessageSize ?
1174 m_initRequest_preferredMessageSize :
1175 m_client->m_initResponse_preferredMessageSize);
1176 apdu->u.initResponse->maximumRecordSize =
1177 odr_intdup(odr_encode(),
1178 m_client->m_initResponse_maximumRecordSize >
1179 m_initRequest_maximumRecordSize ?
1180 m_initRequest_maximumRecordSize :
1181 m_client->m_initResponse_maximumRecordSize);
1183 int r = send_PDU_convert(apdu);
1190 m_parent->pre_init();
1195 int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
1198 const char *apdu_name_tmp = apdu_name(apdu);
1199 int r = send_Z_PDU(apdu, &len);
1200 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
1201 yaz_log (LOG_LOG, "%sSending %s to %s %d bytes",
1203 apdu_name_tmp, get_hostname(), len);
1204 m_bytes_sent += len;
1208 Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
1210 if (apdu->which == Z_APDU_presentRequest)
1212 Z_PresentRequest *pr = apdu->u.presentRequest;
1213 int toget = *pr->numberOfRecordsRequested;
1214 int start = *pr->resultSetStartPoint;
1216 yaz_log(LOG_LOG, "%sPresent %s %d+%d", m_session_str,
1217 pr->resultSetId, start, toget);
1219 if (*m_parent->m_optimize == '0')
1222 if (!m_client->m_last_resultSetId)
1224 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1225 new_apdu->u.presentResponse->records =
1226 create_nonSurrogateDiagnostics(odr_encode(), 30,
1228 send_to_client(new_apdu);
1231 if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
1233 if (start+toget-1 > m_client->m_last_resultCount)
1235 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1236 new_apdu->u.presentResponse->records =
1237 create_nonSurrogateDiagnostics(odr_encode(), 13, 0);
1238 send_to_client(new_apdu);
1241 Z_NamePlusRecordList *npr;
1244 yaz_log(LOG_LOG, "%sCache lookup %d+%d syntax=%s",
1245 m_session_str, start, toget, yaz_z3950oid_to_str(
1246 pr->preferredRecordSyntax, &oclass));
1248 if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
1249 pr->preferredRecordSyntax,
1250 pr->recordComposition))
1252 yaz_log (LOG_LOG, "%sReturned cached records for present request",
1254 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1255 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1257 new_apdu->u.presentResponse->numberOfRecordsReturned
1258 = odr_intdup(odr_encode(), toget);
1260 new_apdu->u.presentResponse->records = (Z_Records*)
1261 odr_malloc(odr_encode(), sizeof(Z_Records));
1262 new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
1263 new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
1264 new_apdu->u.presentResponse->nextResultSetPosition =
1265 odr_intdup(odr_encode(), start+toget);
1267 send_to_client(new_apdu);
1273 if (apdu->which != Z_APDU_searchRequest)
1275 Z_SearchRequest *sr = apdu->u.searchRequest;
1276 Yaz_Z_Query *this_query = new Yaz_Z_Query;
1277 Yaz_Z_Databases this_databases;
1279 this_databases.set(sr->num_databaseNames, (const char **)
1282 this_query->set_Z_Query(sr->query);
1284 char query_str[120];
1285 this_query->print(query_str, sizeof(query_str)-1);
1286 yaz_log(LOG_LOG, "%sSearch %s", m_session_str, query_str);
1288 if (*m_parent->m_optimize != '0' &&
1289 m_client->m_last_ok && m_client->m_last_query &&
1290 m_client->m_last_query->match(this_query) &&
1291 !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
1292 m_client->m_last_databases.match(this_databases))
1295 if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
1296 m_client->m_last_resultCount < *sr->largeSetLowerBound)
1298 Z_NamePlusRecordList *npr;
1299 int toget = *sr->mediumSetPresentNumber;
1300 Z_RecordComposition *comp = 0;
1302 if (toget > m_client->m_last_resultCount)
1303 toget = m_client->m_last_resultCount;
1305 if (sr->mediumSetElementSetNames)
1307 comp = (Z_RecordComposition *)
1308 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1309 comp->which = Z_RecordComp_simple;
1310 comp->u.simple = sr->mediumSetElementSetNames;
1313 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1314 sr->preferredRecordSyntax, comp))
1316 yaz_log (LOG_LOG, "%sReturned cached records for medium set",
1318 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1319 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1320 new_apdu->u.searchResponse->resultCount =
1321 &m_client->m_last_resultCount;
1323 new_apdu->u.searchResponse->numberOfRecordsReturned
1324 = odr_intdup(odr_encode(), toget);
1326 new_apdu->u.searchResponse->presentStatus =
1327 odr_intdup(odr_encode(), Z_PresentStatus_success);
1328 new_apdu->u.searchResponse->records = (Z_Records*)
1329 odr_malloc(odr_encode(), sizeof(Z_Records));
1330 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1331 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1332 new_apdu->u.searchResponse->nextResultSetPosition =
1333 odr_intdup(odr_encode(), toget+1);
1334 send_to_client(new_apdu);
1340 // send present request (medium size)
1341 yaz_log (LOG_LOG, "%sOptimizing search for medium set",
1344 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1345 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1346 pr->referenceId = sr->referenceId;
1347 pr->resultSetId = sr->resultSetName;
1348 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1349 *pr->numberOfRecordsRequested = toget;
1350 pr->recordComposition = comp;
1351 m_client->m_sr_transform = 1;
1355 else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
1356 m_client->m_last_resultCount <= 0)
1358 // large set. Return pseudo-search response immediately
1359 yaz_log (LOG_LOG, "%sOptimizing search for large set",
1361 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1362 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1363 new_apdu->u.searchResponse->resultCount =
1364 &m_client->m_last_resultCount;
1365 send_to_client(new_apdu);
1370 Z_NamePlusRecordList *npr;
1371 int toget = m_client->m_last_resultCount;
1372 Z_RecordComposition *comp = 0;
1374 // send a present request (small set)
1376 if (sr->smallSetElementSetNames)
1378 comp = (Z_RecordComposition *)
1379 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1380 comp->which = Z_RecordComp_simple;
1381 comp->u.simple = sr->smallSetElementSetNames;
1384 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1385 sr->preferredRecordSyntax, comp))
1387 yaz_log (LOG_LOG, "%sReturned cached records for small set",
1389 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1390 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1391 new_apdu->u.searchResponse->resultCount =
1392 &m_client->m_last_resultCount;
1394 new_apdu->u.searchResponse->numberOfRecordsReturned
1395 = odr_intdup(odr_encode(), toget);
1397 new_apdu->u.searchResponse->presentStatus =
1398 odr_intdup(odr_encode(), Z_PresentStatus_success);
1399 new_apdu->u.searchResponse->records = (Z_Records*)
1400 odr_malloc(odr_encode(), sizeof(Z_Records));
1401 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1402 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1403 new_apdu->u.searchResponse->nextResultSetPosition =
1404 odr_intdup(odr_encode(), toget+1);
1405 send_to_client(new_apdu);
1410 yaz_log (LOG_LOG, "%sOptimizing search for small set",
1412 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1413 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1414 pr->referenceId = sr->referenceId;
1415 pr->resultSetId = sr->resultSetName;
1416 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1417 *pr->numberOfRecordsRequested = toget;
1418 pr->recordComposition = comp;
1419 m_client->m_sr_transform = 1;
1424 else // query doesn't match
1426 delete m_client->m_last_query;
1427 m_client->m_last_query = this_query;
1428 m_client->m_last_ok = 0;
1429 m_client->m_cache.clear();
1430 m_client->m_resultSetStartPoint = 0;
1432 xfree (m_client->m_last_resultSetId);
1433 m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
1435 m_client->m_last_databases.set(sr->num_databaseNames,
1436 (const char **) sr->databaseNames);
1442 void Yaz_Proxy::inc_request_no()
1444 char *cp = strchr(m_session_str, ' ');
1447 sprintf(cp+1, "%d ", m_request_no);
1450 void Yaz_Proxy::recv_GDU(Z_GDU *apdu, int len)
1454 m_bytes_recv += len;
1456 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1457 yaz_log (LOG_LOG, "%sReceiving %s from client %d bytes",
1458 m_session_str, gdu_name(apdu), len);
1460 if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
1463 m_bw_stat.add_bytes(len);
1464 m_pdu_stat.add_bytes(1);
1466 #if HAVE_GETTIMEOFDAY
1467 gettimeofday((struct timeval *) m_time_tv, 0);
1470 int bw_total = m_bw_stat.get_total();
1471 int pdu_total = m_pdu_stat.get_total();
1476 if (bw_total > m_bw_max)
1478 reduce = (bw_total/m_bw_max);
1483 if (pdu_total > m_pdu_max)
1485 int nreduce = (m_pdu_max >= 60) ? 1 : 60/m_pdu_max;
1486 reduce = (reduce > nreduce) ? reduce : nreduce;
1491 yaz_log(LOG_LOG, "%sdelay=%d bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
1492 m_session_str, reduce, bw_total, pdu_total,
1493 m_bw_max, m_pdu_max);
1495 m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
1496 timeout(reduce); // call us reduce seconds later
1498 else if (apdu->which == Z_GDU_Z3950)
1499 handle_incoming_Z_PDU(apdu->u.z3950);
1500 else if (apdu->which == Z_GDU_HTTP_Request)
1501 handle_incoming_HTTP(apdu->u.HTTP_Request);
1504 void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
1506 if (m_max_record_retrieve)
1508 if (apdu->which == Z_APDU_presentRequest)
1510 Z_PresentRequest *pr = apdu->u.presentRequest;
1511 if (pr->numberOfRecordsRequested &&
1512 *pr->numberOfRecordsRequested > m_max_record_retrieve)
1513 *pr->numberOfRecordsRequested = m_max_record_retrieve;
1518 Z_Records *Yaz_Proxy::create_nonSurrogateDiagnostics(ODR odr,
1520 const char *addinfo)
1522 Z_Records *rec = (Z_Records *)
1523 odr_malloc (odr, sizeof(*rec));
1525 odr_malloc (odr, sizeof(*err));
1526 Z_DiagRec *drec = (Z_DiagRec *)
1527 odr_malloc (odr, sizeof(*drec));
1528 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1529 odr_malloc (odr, sizeof(*dr));
1531 rec->which = Z_Records_NSD;
1532 rec->u.nonSurrogateDiagnostic = dr;
1533 dr->diagnosticSetId =
1534 yaz_oidval_to_z3950oid (odr, CLASS_DIAGSET, VAL_BIB1);
1535 dr->condition = err;
1536 dr->which = Z_DefaultDiagFormat_v2Addinfo;
1537 dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
1541 Z_APDU *Yaz_Proxy::handle_query_transformation(Z_APDU *apdu)
1543 if (apdu->which == Z_APDU_searchRequest &&
1544 apdu->u.searchRequest->query &&
1545 apdu->u.searchRequest->query->which == Z_Query_type_104 &&
1546 apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
1548 Z_RPNQuery *rpnquery = 0;
1549 Z_SearchRequest *sr = apdu->u.searchRequest;
1552 yaz_log(LOG_LOG, "%sCQL: %s", m_session_str,
1553 sr->query->u.type_104->u.cql);
1555 int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
1556 &rpnquery, odr_encode(),
1559 yaz_log(LOG_LOG, "%sNo CQL to RPN table", m_session_str);
1562 yaz_log(LOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
1563 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1565 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1566 new_apdu->u.searchResponse->records =
1567 create_nonSurrogateDiagnostics(odr_encode(),
1568 yaz_diag_srw_to_bib1(r),
1570 *new_apdu->u.searchResponse->searchStatus = 0;
1572 send_to_client(new_apdu);
1578 sr->query->which = Z_Query_type_1;
1579 sr->query->u.type_1 = rpnquery;
1586 Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
1588 if (apdu->which == Z_APDU_searchRequest)
1590 Z_SearchRequest *sr = apdu->u.searchRequest;
1594 Yaz_ProxyConfig *cfg = check_reconfigure();
1596 err = cfg->check_query(odr_encode(), m_default_target,
1597 sr->query, &addinfo);
1600 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1602 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1603 new_apdu->u.searchResponse->records =
1604 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1605 *new_apdu->u.searchResponse->searchStatus = 0;
1607 send_to_client(new_apdu);
1615 Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
1618 if (apdu->which == Z_APDU_searchRequest)
1620 Z_SearchRequest *sr = apdu->u.searchRequest;
1623 Yaz_ProxyConfig *cfg = check_reconfigure();
1625 Z_RecordComposition rc_temp, *rc = 0;
1626 if (sr->smallSetElementSetNames)
1628 rc_temp.which = Z_RecordComp_simple;
1629 rc_temp.u.simple = sr->smallSetElementSetNames;
1633 if (sr->preferredRecordSyntax)
1636 ent = oid_getentbyoid(sr->preferredRecordSyntax);
1637 m_frontend_type = ent->value;
1640 m_frontend_type = VAL_NONE;
1642 char *stylesheet_name = 0;
1644 err = cfg->check_syntax(odr_encode(),
1646 sr->preferredRecordSyntax, rc,
1647 &addinfo, &stylesheet_name, &m_schema,
1649 if (stylesheet_name)
1651 m_parent->low_socket_close();
1654 if (m_stylesheet_xsp)
1655 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
1656 m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
1659 m_stylesheet_offset = 0;
1660 xfree(stylesheet_name);
1662 m_parent->low_socket_open();
1666 sr->smallSetElementSetNames = 0;
1667 sr->mediumSetElementSetNames = 0;
1671 sr->preferredRecordSyntax =
1672 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN,
1676 sr->preferredRecordSyntax =
1677 yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN,
1683 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1685 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1686 new_apdu->u.searchResponse->records =
1687 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1688 *new_apdu->u.searchResponse->searchStatus = 0;
1690 send_to_client(new_apdu);
1694 else if (m_backend_type)
1696 sr->preferredRecordSyntax =
1697 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN, m_backend_type);
1700 else if (apdu->which == Z_APDU_presentRequest)
1702 Z_PresentRequest *pr = apdu->u.presentRequest;
1705 Yaz_ProxyConfig *cfg = check_reconfigure();
1707 if (pr->preferredRecordSyntax)
1710 ent = oid_getentbyoid(pr->preferredRecordSyntax);
1711 m_frontend_type = ent->value;
1714 m_frontend_type = VAL_NONE;
1716 char *stylesheet_name = 0;
1718 err = cfg->check_syntax(odr_encode(), m_default_target,
1719 pr->preferredRecordSyntax,
1720 pr->recordComposition,
1721 &addinfo, &stylesheet_name, &m_schema,
1723 if (stylesheet_name)
1725 m_parent->low_socket_close();
1728 if (m_stylesheet_xsp)
1729 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
1730 m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
1733 m_stylesheet_offset = 0;
1734 xfree(stylesheet_name);
1736 m_parent->low_socket_open();
1740 pr->recordComposition = 0;
1744 pr->preferredRecordSyntax =
1745 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN,
1749 pr->preferredRecordSyntax =
1750 yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN,
1756 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1758 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1759 new_apdu->u.presentResponse->records =
1760 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1761 *new_apdu->u.presentResponse->presentStatus =
1762 Z_PresentStatus_failure;
1764 send_to_client(new_apdu);
1768 else if (m_backend_type)
1770 pr->preferredRecordSyntax =
1771 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN, m_backend_type);
1777 Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
1781 Z_ElementSetNames *esn = (Z_ElementSetNames *)
1782 odr_malloc(o, sizeof(Z_ElementSetNames));
1783 esn->which = Z_ElementSetNames_generic;
1784 esn->u.generic = odr_strdup(o, schema);
1788 void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
1792 odr_destroy(m_s2z_odr_init);
1795 if (m_s2z_odr_search)
1797 odr_destroy(m_s2z_odr_search);
1798 m_s2z_odr_search = 0;
1801 m_http_keepalive = 0;
1803 if (!strcmp(hreq->version, "1.0"))
1805 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1806 if (v && !strcmp(v, "Keep-Alive"))
1807 m_http_keepalive = 1;
1809 m_http_keepalive = 0;
1810 m_http_version = "1.0";
1814 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1815 if (v && !strcmp(v, "close"))
1816 m_http_keepalive = 0;
1818 m_http_keepalive = 1;
1819 m_http_version = "1.1";
1822 Z_SRW_PDU *srw_pdu = 0;
1823 Z_SOAP *soap_package = 0;
1825 Z_SRW_diagnostic *diagnostic = 0;
1826 int num_diagnostic = 0;
1827 if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
1829 || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
1830 &charset, &diagnostic, &num_diagnostic) == 0)
1832 m_s2z_odr_init = odr_createmem(ODR_ENCODE);
1833 m_s2z_odr_search = odr_createmem(ODR_ENCODE);
1834 m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
1835 m_s2z_init_apdu = 0;
1836 m_s2z_search_apdu = 0;
1837 m_s2z_present_apdu = 0;
1839 m_s2z_stylesheet = 0;
1841 if (srw_pdu->which == Z_SRW_searchRetrieve_request)
1843 Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
1845 m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
1846 // recordXPath unsupported.
1847 if (srw_req->recordXPath)
1849 yaz_add_srw_diagnostic(odr_decode(),
1850 &diagnostic, &num_diagnostic,
1854 if (srw_req->sort_type != Z_SRW_sort_type_none)
1856 yaz_add_srw_diagnostic(odr_decode(),
1857 &diagnostic, &num_diagnostic,
1861 if (srw_req->stylesheet)
1863 odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
1865 // set packing for response records ..
1866 if (srw_req->recordPacking &&
1867 !strcmp(srw_req->recordPacking, "xml"))
1868 m_s2z_packing = Z_SRW_recordPacking_XML;
1870 m_s2z_packing = Z_SRW_recordPacking_string;
1874 Z_SRW_PDU *srw_pdu =
1875 yaz_srw_get(odr_encode(),
1876 Z_SRW_searchRetrieve_response);
1877 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
1879 srw_res->diagnostics = diagnostic;
1880 srw_res->num_diagnostics = num_diagnostic;
1881 send_srw_response(srw_pdu);
1885 // prepare search PDU
1886 m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
1887 Z_APDU_searchRequest);
1888 Z_SearchRequest *z_searchRequest =
1889 m_s2z_search_apdu->u.searchRequest;
1891 z_searchRequest->num_databaseNames = 1;
1892 z_searchRequest->databaseNames = (char**)
1893 odr_malloc(m_s2z_odr_search, sizeof(char *));
1894 z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
1897 // query transformation
1898 Z_Query *query = (Z_Query *)
1899 odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
1900 z_searchRequest->query = query;
1902 if (srw_req->query_type == Z_SRW_query_type_cql)
1904 Z_External *ext = (Z_External *)
1905 odr_malloc(m_s2z_odr_search, sizeof(*ext));
1906 ext->direct_reference =
1907 odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
1908 ext->indirect_reference = 0;
1909 ext->descriptor = 0;
1910 ext->which = Z_External_CQL;
1911 ext->u.cql = srw_req->query.cql;
1913 query->which = Z_Query_type_104;
1914 query->u.type_104 = ext;
1916 else if (srw_req->query_type == Z_SRW_query_type_pqf)
1918 Z_RPNQuery *RPNquery;
1919 YAZ_PQF_Parser pqf_parser;
1921 pqf_parser = yaz_pqf_create ();
1923 RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
1924 srw_req->query.pqf);
1927 const char *pqf_msg;
1929 int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
1930 yaz_log(LOG_LOG, "%*s^\n", off+4, "");
1931 yaz_log(LOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
1933 send_to_srw_client_error(10, 0);
1936 query->which = Z_Query_type_1;
1937 query->u.type_1 = RPNquery;
1939 yaz_pqf_destroy (pqf_parser);
1943 send_to_srw_client_error(7, "query");
1948 m_s2z_present_apdu = 0;
1950 if (srw_req->maximumRecords)
1951 max = *srw_req->maximumRecords;
1953 if (srw_req->startRecord)
1954 start = *srw_req->startRecord;
1957 // Some backend, such as Voyager doesn't honor piggyback
1958 // So we use present always (0 &&).
1959 if (0 && start <= 1) // Z39.50 piggyback
1961 *z_searchRequest->smallSetUpperBound = max;
1962 *z_searchRequest->mediumSetPresentNumber = max;
1963 *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
1965 z_searchRequest->preferredRecordSyntax =
1966 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
1968 if (srw_req->recordSchema)
1970 z_searchRequest->smallSetElementSetNames =
1971 z_searchRequest->mediumSetElementSetNames =
1972 mk_esn_from_schema(m_s2z_odr_search,
1973 srw_req->recordSchema);
1976 else // Z39.50 present
1978 m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
1979 Z_APDU_presentRequest);
1980 Z_PresentRequest *z_presentRequest =
1981 m_s2z_present_apdu->u.presentRequest;
1982 *z_presentRequest->resultSetStartPoint = start;
1983 *z_presentRequest->numberOfRecordsRequested = max;
1984 z_presentRequest->preferredRecordSyntax =
1985 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
1987 if (srw_req->recordSchema)
1989 z_presentRequest->recordComposition =
1990 (Z_RecordComposition *)
1991 odr_malloc(m_s2z_odr_search,
1992 sizeof(Z_RecordComposition));
1993 z_presentRequest->recordComposition->which =
1994 Z_RecordComp_simple;
1995 z_presentRequest->recordComposition->u.simple =
1996 mk_esn_from_schema(m_s2z_odr_search,
1997 srw_req->recordSchema);
2003 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
2004 Z_APDU_initRequest);
2006 // prevent m_initRequest_apdu memory from being grabbed
2007 // in Yaz_Proxy::handle_incoming_Z_PDU
2008 m_initRequest_apdu = m_s2z_init_apdu;
2009 handle_incoming_Z_PDU(m_s2z_init_apdu);
2014 handle_incoming_Z_PDU(m_s2z_search_apdu);
2018 else if (srw_pdu->which == Z_SRW_explain_request)
2020 Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
2022 m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
2025 if (srw_req->stylesheet)
2027 odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
2029 if (srw_req->recordPacking &&
2030 !strcmp(srw_req->recordPacking, "xml"))
2031 m_s2z_packing = Z_SRW_recordPacking_XML;
2033 m_s2z_packing = Z_SRW_recordPacking_string;
2037 send_srw_explain_response(diagnostic, num_diagnostic);
2043 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
2044 Z_APDU_initRequest);
2046 // prevent m_initRequest_apdu memory from being grabbed
2047 // in Yaz_Proxy::handle_incoming_Z_PDU
2048 m_initRequest_apdu = m_s2z_init_apdu;
2049 handle_incoming_Z_PDU(m_s2z_init_apdu);
2052 send_srw_explain_response(0, 0);
2055 else if (srw_pdu->which == Z_SRW_scan_request)
2057 m_s2z_database = odr_strdup(m_s2z_odr_init,
2058 srw_pdu->u.scan_request->database);
2060 yaz_add_srw_diagnostic(odr_decode(),
2061 &diagnostic, &num_diagnostic,
2063 Z_SRW_PDU *srw_pdu =
2064 yaz_srw_get(odr_encode(),
2065 Z_SRW_scan_response);
2066 Z_SRW_scanResponse *srw_res = srw_pdu->u.scan_response;
2068 srw_res->diagnostics = diagnostic;
2069 srw_res->num_diagnostics = num_diagnostic;
2070 send_srw_response(srw_pdu);
2077 send_to_srw_client_error(4, 0);
2081 Z_GDU *p = z_get_HTTP_Response(odr_encode(), 400);
2086 void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
2088 Z_ReferenceId **refid = get_referenceIdP(apdu);
2089 nmem_reset(m_referenceId_mem);
2090 if (refid && *refid)
2092 m_referenceId = (Z_ReferenceId *)
2093 nmem_malloc(m_referenceId_mem, sizeof(*m_referenceId));
2094 m_referenceId->len = m_referenceId->size = (*refid)->len;
2095 m_referenceId->buf = (unsigned char *)
2096 nmem_malloc(m_referenceId_mem, (*refid)->len);
2097 memcpy(m_referenceId->buf, (*refid)->buf, (*refid)->len);
2102 if (!m_client && m_invalid_session)
2104 m_apdu_invalid_session = apdu;
2105 m_mem_invalid_session = odr_extract_mem(odr_decode());
2106 apdu = m_initRequest_apdu;
2109 // Determine our client.
2110 Z_OtherInformation **oi;
2111 get_otherInfoAPDU(apdu, &oi);
2112 m_client = get_client(apdu, get_cookie(oi), get_proxy(oi));
2118 m_client->m_server = this;
2120 if (apdu->which == Z_APDU_initRequest)
2122 if (apdu->u.initRequest->implementationId)
2123 yaz_log(LOG_LOG, "%simplementationId: %s",
2124 m_session_str, apdu->u.initRequest->implementationId);
2125 if (apdu->u.initRequest->implementationName)
2126 yaz_log(LOG_LOG, "%simplementationName: %s",
2127 m_session_str, apdu->u.initRequest->implementationName);
2128 if (apdu->u.initRequest->implementationVersion)
2129 yaz_log(LOG_LOG, "%simplementationVersion: %s",
2130 m_session_str, apdu->u.initRequest->implementationVersion);
2131 if (m_initRequest_apdu == 0)
2133 if (m_initRequest_mem)
2134 nmem_destroy(m_initRequest_mem);
2135 m_initRequest_apdu = apdu;
2136 m_initRequest_mem = odr_extract_mem(odr_decode());
2138 m_initRequest_preferredMessageSize = *apdu->u.initRequest->
2139 preferredMessageSize;
2140 *apdu->u.initRequest->preferredMessageSize = 1024*1024;
2141 m_initRequest_maximumRecordSize = *apdu->u.initRequest->
2143 *apdu->u.initRequest->maximumRecordSize = 1024*1024;
2145 // save init options for the response..
2146 m_initRequest_options = apdu->u.initRequest->options;
2148 apdu->u.initRequest->options =
2149 (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
2150 sizeof(Odr_bitmask));
2151 ODR_MASK_ZERO(apdu->u.initRequest->options);
2153 for (i = 0; i<= 24; i++)
2154 ODR_MASK_SET(apdu->u.initRequest->options, i);
2155 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2156 Z_Options_negotiationModel);
2157 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2158 Z_Options_concurrentOperations);
2161 m_initRequest_version = apdu->u.initRequest->protocolVersion;
2162 apdu->u.initRequest->protocolVersion =
2163 (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
2164 sizeof(Odr_bitmask));
2165 ODR_MASK_ZERO(apdu->u.initRequest->protocolVersion);
2167 for (i = 0; i<= 8; i++)
2168 ODR_MASK_SET(apdu->u.initRequest->protocolVersion, i);
2170 if (m_client->m_init_flag)
2172 if (handle_init_response_for_invalid_session(apdu))
2174 if (m_client->m_initResponse)
2176 Z_APDU *apdu2 = m_client->m_initResponse;
2177 apdu2->u.initResponse->otherInfo = 0;
2178 if (m_client->m_cookie && *m_client->m_cookie)
2179 set_otherInformationString(apdu2, VAL_COOKIE, 1,
2180 m_client->m_cookie);
2181 apdu2->u.initResponse->referenceId =
2182 apdu->u.initRequest->referenceId;
2183 apdu2->u.initResponse->options = m_client->m_initResponse_options;
2184 apdu2->u.initResponse->protocolVersion =
2185 m_client->m_initResponse_version;
2187 send_to_client(apdu2);
2191 m_client->m_init_flag = 1;
2193 handle_max_record_retrieve(apdu);
2196 apdu = handle_syntax_validation(apdu);
2199 apdu = handle_query_transformation(apdu);
2202 apdu = handle_query_validation(apdu);
2205 apdu = result_set_optimize(apdu);
2208 m_client->timeout(m_target_idletime); // mark it active even
2209 // though we didn't use it
2213 // delete other info part from PDU before sending to target
2214 get_otherInfoAPDU(apdu, &oi);
2218 if (apdu->which == Z_APDU_presentRequest &&
2219 m_client->m_resultSetStartPoint == 0)
2221 Z_PresentRequest *pr = apdu->u.presentRequest;
2222 m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
2223 m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
2225 m_client->m_resultSetStartPoint = 0;
2227 if (m_client->send_to_target(apdu) < 0)
2234 m_client->m_waiting = 1;
2237 void Yaz_Proxy::connectNotify()
2241 void Yaz_Proxy::shutdown()
2243 m_invalid_session = 0;
2244 // only keep if keep_alive flag is set...
2246 m_client->m_pdu_recv < m_keepalive_limit_pdu &&
2247 m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
2248 m_client->m_waiting == 0)
2250 yaz_log(LOG_LOG, "%sShutdown (client to proxy) keepalive %s",
2252 m_client->get_hostname());
2253 yaz_log(LOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
2254 m_session_str, m_client->m_pdu_recv,
2255 m_client->m_bytes_sent + m_client->m_bytes_recv,
2256 m_keepalive_limit_bw, m_keepalive_limit_pdu);
2257 assert (m_client->m_waiting != 2);
2258 // Tell client (if any) that no server connection is there..
2259 m_client->m_server = 0;
2260 m_invalid_session = 0;
2264 yaz_log (LOG_LOG, "%sShutdown (client to proxy) close %s",
2266 m_client->get_hostname());
2267 assert (m_client->m_waiting != 2);
2272 yaz_log (LOG_LOG, "%sshutdown (client to proxy) bad state",
2278 yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
2282 m_parent->pre_init();
2286 const char *Yaz_ProxyClient::get_session_str()
2290 return m_server->get_session_str();
2293 void Yaz_ProxyClient::shutdown()
2295 yaz_log (LOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
2301 void Yaz_Proxy::failNotify()
2304 yaz_log (LOG_LOG, "%sConnection closed by client",
2309 void Yaz_ProxyClient::failNotify()
2312 m_server->inc_request_no();
2313 yaz_log (LOG_LOG, "%sConnection closed by target %s",
2314 get_session_str(), get_hostname());
2318 void Yaz_ProxyClient::connectNotify()
2320 const char *s = get_session_str();
2321 const char *h = get_hostname();
2322 yaz_log (LOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
2324 timeout(m_target_idletime);
2329 IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
2330 *the_PDU_Observable, int fd)
2332 return new Yaz_ProxyClient(the_PDU_Observable, 0);
2335 Yaz_ProxyClient::~Yaz_ProxyClient()
2340 m_next->m_prev = m_prev;
2341 m_waiting = 2; // for debugging purposes only.
2342 odr_destroy(m_init_odr);
2343 delete m_last_query;
2344 xfree (m_last_resultSetId);
2348 void Yaz_ProxyClient::pre_init_client()
2350 Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
2351 Z_InitRequest *req = apdu->u.initRequest;
2354 for (i = 0; i<= 24; i++)
2355 ODR_MASK_SET(req->options, i);
2356 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2357 Z_Options_negotiationModel);
2358 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2359 Z_Options_concurrentOperations);
2360 for (i = 0; i<= 10; i++)
2361 ODR_MASK_SET(req->protocolVersion, i);
2363 if (send_to_target(apdu) < 0)
2374 void Yaz_Proxy::pre_init()
2377 const char *name = 0;
2378 const char *zurl_in_use[MAX_ZURL_PLEX];
2379 int limit_bw, limit_pdu, limit_req;
2380 int target_idletime, client_idletime;
2382 int keepalive_limit_bw, keepalive_limit_pdu;
2384 const char *cql2rpn = 0;
2386 Yaz_ProxyConfig *cfg = check_reconfigure();
2390 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
2395 for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
2396 &limit_bw, &limit_pdu, &limit_req,
2397 &target_idletime, &client_idletime,
2399 &keepalive_limit_bw,
2400 &keepalive_limit_pdu,
2407 for (j = 0; zurl_in_use[j]; j++)
2411 int spare_waiting = 0;
2414 for (c = m_clientPool; c; c = c->m_next)
2416 if (!strcmp(zurl_in_use[j], c->get_hostname()))
2418 if (c->m_cookie == 0)
2420 if (c->m_server == 0)
2432 yaz_log(LOG_LOG, "%spre-init %s %s use=%d other=%d spare=%d "
2433 "sparew=%d preinit=%d",m_session_str,
2434 name, zurl_in_use[j], in_use, other,
2435 spare, spare_waiting, pre_init);
2436 if (spare + spare_waiting < pre_init)
2438 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
2439 c->m_next = m_clientPool;
2441 c->m_next->m_prev = &c->m_next;
2443 c->m_prev = &m_clientPool;
2445 if (m_log_mask & PROXY_LOG_APDU_SERVER)
2446 c->set_APDU_yazlog(1);
2448 c->set_APDU_yazlog(0);
2450 if (c->client(zurl_in_use[j]))
2458 c->m_target_idletime = target_idletime;
2459 c->m_seqno = m_seqno++;
2466 void Yaz_Proxy::timeoutNotify()
2472 timeout(m_client_idletime);
2473 Z_GDU *apdu = m_bw_hold_PDU;
2476 if (apdu->which == Z_GDU_Z3950)
2477 handle_incoming_Z_PDU(apdu->u.z3950);
2478 else if (apdu->which == Z_GDU_HTTP_Request)
2479 handle_incoming_HTTP(apdu->u.HTTP_Request);
2481 else if (m_stylesheet_nprl)
2482 convert_xsl_delay();
2487 yaz_log (LOG_LOG, "%sTimeout (client to proxy)", m_session_str);
2498 void Yaz_Proxy::markInvalid()
2501 m_invalid_session = 1;
2504 void Yaz_ProxyClient::timeoutNotify()
2507 m_server->inc_request_no();
2509 yaz_log (LOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
2513 if (m_server && m_init_flag)
2515 // target timed out in a session that was properly initialized
2516 // server object stay alive but we mark it as invalid so it
2517 // gets initialized again
2518 m_server->markInvalid();
2524 Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
2525 Yaz_Proxy *parent) :
2526 Yaz_Z_Assoc (the_PDU_Observable)
2533 m_last_resultSetId = 0;
2534 m_last_resultCount = 0;
2538 m_init_odr = odr_createmem (ODR_DECODE);
2540 m_initResponse_options = 0;
2541 m_initResponse_version = 0;
2542 m_initResponse_preferredMessageSize = 0;
2543 m_initResponse_maximumRecordSize = 0;
2544 m_resultSetStartPoint = 0;
2545 m_bytes_sent = m_bytes_recv = 0;
2549 m_target_idletime = 600;
2553 const char *Yaz_Proxy::option(const char *name, const char *value)
2555 if (!strcmp (name, "optimize")) {
2558 m_optimize = xstrdup (value);
2565 void Yaz_ProxyClient::recv_HTTP_response(Z_HTTP_Response *apdu, int len)
2570 void Yaz_ProxyClient::recv_GDU(Z_GDU *apdu, int len)
2572 if (apdu->which == Z_GDU_Z3950)
2573 recv_Z_PDU(apdu->u.z3950, len);
2574 else if (apdu->which == Z_GDU_HTTP_Response)
2575 recv_HTTP_response(apdu->u.HTTP_Response, len);
2580 int Yaz_Proxy::handle_init_response_for_invalid_session(Z_APDU *apdu)
2582 if (!m_invalid_session)
2584 m_invalid_session = 0;
2585 handle_incoming_Z_PDU(m_apdu_invalid_session);
2586 assert (m_mem_invalid_session);
2587 nmem_destroy(m_mem_invalid_session);
2588 m_mem_invalid_session = 0;
2592 void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
2594 m_bytes_recv += len;
2598 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
2599 yaz_log (LOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
2600 apdu_name(apdu), get_hostname(), len);
2601 if (apdu->which == Z_APDU_initResponse)
2603 if (!m_server) // if this is a pre init session , check for more
2605 NMEM nmem = odr_extract_mem (odr_decode());
2606 odr_reset (m_init_odr);
2607 nmem_transfer (m_init_odr->mem, nmem);
2608 m_initResponse = apdu;
2609 m_initResponse_options = apdu->u.initResponse->options;
2610 m_initResponse_version = apdu->u.initResponse->protocolVersion;
2611 m_initResponse_preferredMessageSize =
2612 *apdu->u.initResponse->preferredMessageSize;
2613 m_initResponse_maximumRecordSize =
2614 *apdu->u.initResponse->maximumRecordSize;
2616 Z_InitResponse *ir = apdu->u.initResponse;
2617 char *im0 = ir->implementationName;
2620 odr_malloc(m_init_odr, 20 + (im0 ? strlen(im0) : 0));
2627 strcat(im1, "(YAZ Proxy)");
2628 ir->implementationName = im1;
2630 nmem_destroy (nmem);
2632 if (m_server && m_server->handle_init_response_for_invalid_session(apdu))
2635 if (apdu->which == Z_APDU_searchResponse)
2637 Z_SearchResponse *sr = apdu->u.searchResponse;
2638 m_last_resultCount = *sr->resultCount;
2639 int status = *sr->searchStatus;
2640 if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
2644 if (sr->records && sr->records->which == Z_Records_DBOSD)
2646 m_cache.add(odr_decode(),
2647 sr->records->u.databaseOrSurDiagnostics, 1,
2652 if (apdu->which == Z_APDU_presentResponse)
2654 Z_PresentResponse *pr = apdu->u.presentResponse;
2658 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
2659 Z_SearchResponse *sr = new_apdu->u.searchResponse;
2660 sr->referenceId = pr->referenceId;
2661 *sr->resultCount = m_last_resultCount;
2662 sr->records = pr->records;
2663 sr->nextResultSetPosition = pr->nextResultSetPosition;
2664 sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
2668 pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
2670 m_cache.add(odr_decode(),
2671 pr->records->u.databaseOrSurDiagnostics,
2672 m_resultSetStartPoint, -1);
2673 m_resultSetStartPoint = 0;
2677 set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
2680 m_server->send_to_client(apdu);
2682 if (apdu->which == Z_APDU_close)
2688 void Yaz_Proxy::low_socket_close()
2693 for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
2694 if (m_lo_fd[i] >= 0)
2695 ::close(m_lo_fd[i]);
2699 void Yaz_Proxy::low_socket_open()
2704 for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
2705 m_lo_fd[i] = open("/dev/null", O_RDONLY);
2709 int Yaz_Proxy::server(const char *addr)
2711 int r = Yaz_Z_Assoc::server(addr);
2714 yaz_log(LOG_LOG, "%sStarted proxy "
2718 " on %s", m_session_str, addr);