1 /* $Id: yaz-proxy.cpp,v 1.20 2005-02-10 08:09:42 oleg Exp $
2 Copyright (c) 1998-2005, 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
23 #define HAVE_SYS_STAT_H 1
24 #define HAVE_SYS_TYPES_H 1
34 #include <sys/types.h>
45 #include <yaz/marcdisp.h>
46 #include <yaz/yaz-iconv.h>
48 #include <yaz/diagbib1.h>
50 #include <yaz/pquery.h>
51 #include <yaz/otherinfo.h>
52 #include <yaz/charneg.h>
55 static const char *apdu_name(Z_APDU *apdu)
59 case Z_APDU_initRequest:
61 case Z_APDU_initResponse:
62 return "initResponse";
63 case Z_APDU_searchRequest:
64 return "searchRequest";
65 case Z_APDU_searchResponse:
66 return "searchResponse";
67 case Z_APDU_presentRequest:
68 return "presentRequest";
69 case Z_APDU_presentResponse:
70 return "presentResponse";
71 case Z_APDU_deleteResultSetRequest:
72 return "deleteResultSetRequest";
73 case Z_APDU_deleteResultSetResponse:
74 return "deleteResultSetResponse";
75 case Z_APDU_scanRequest:
77 case Z_APDU_scanResponse:
78 return "scanResponse";
79 case Z_APDU_sortRequest:
81 case Z_APDU_sortResponse:
82 return "sortResponse";
83 case Z_APDU_extendedServicesRequest:
84 return "extendedServicesRequest";
85 case Z_APDU_extendedServicesResponse:
86 return "extendedServicesResponse";
93 static const char *gdu_name(Z_GDU *gdu)
98 return apdu_name(gdu->u.z3950);
99 case Z_GDU_HTTP_Request:
100 return "HTTP Request";
101 case Z_GDU_HTTP_Response:
102 return "HTTP Response";
104 return "Unknown request/response";
106 Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable,
108 Yaz_Z_Assoc(the_PDU_Observable), m_bw_stat(60), m_pdu_stat(60)
110 m_PDU_Observable = the_PDU_Observable;
115 m_keepalive_limit_bw = 500000;
116 m_keepalive_limit_pdu = 1000;
118 m_default_target = 0;
119 m_proxy_authentication = 0;
120 m_proxy_negotiation_charset = 0;
121 m_proxy_negotiation_lang = 0;
125 m_client_idletime = 600;
126 m_target_idletime = 600;
127 m_optimize = xstrdup ("1");
128 strcpy(m_session_str, "0 ");
135 m_max_record_retrieve = 0;
139 m_invalid_session = 0;
141 m_referenceId_mem = nmem_create();
144 m_stylesheet_xsp = 0;
145 m_stylesheet_nprl = 0;
146 m_s2z_stylesheet = 0;
150 m_backend_charset = 0;
152 m_initRequest_apdu = 0;
153 m_initRequest_mem = 0;
154 m_initRequest_preferredMessageSize = 0;
155 m_initRequest_maximumRecordSize = 0;
156 m_initRequest_options = 0;
157 m_initRequest_version = 0;
158 m_initRequest_oi_negotiation_charsets = 0;
159 m_initRequest_oi_negotiation_num_charsets = 0;
160 m_initRequest_oi_negotiation_langs = 0;
161 m_initRequest_oi_negotiation_num_langs = 0;
162 m_initRequest_oi_negotiation_selected = 0;
163 m_apdu_invalid_session = 0;
164 m_mem_invalid_session = 0;
166 m_s2z_odr_search = 0;
168 m_s2z_search_apdu = 0;
169 m_s2z_present_apdu = 0;
170 m_http_keepalive = 0;
173 m_s2z_packing = Z_SRW_recordPacking_string;
174 #if HAVE_GETTIMEOFDAY
175 m_time_tv = xmalloc(sizeof(struct timeval));
176 struct timeval *tv = (struct timeval *) m_time_tv;
182 m_usemarcon_ini_stage1 = 0;
183 m_usemarcon_ini_stage2 = 0;
184 m_usemarcon = new Yaz_usemarcon();
189 Yaz_Proxy::~Yaz_Proxy()
191 yaz_log(YLOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
192 m_bytes_sent, m_bytes_recv);
193 nmem_destroy(m_initRequest_mem);
194 nmem_destroy(m_mem_invalid_session);
195 nmem_destroy(m_referenceId_mem);
197 xfree(m_proxyTarget);
198 xfree(m_default_target);
199 xfree(m_proxy_authentication);
200 xfree(m_proxy_negotiation_charset);
201 xfree(m_proxy_negotiation_lang);
205 if (m_stylesheet_xsp)
206 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
211 xfree (m_backend_type);
212 xfree (m_backend_charset);
213 xfree (m_usemarcon_ini_stage1);
214 xfree (m_usemarcon_ini_stage2);
217 odr_destroy(m_s2z_odr_init);
218 if (m_s2z_odr_search)
219 odr_destroy(m_s2z_odr_search);
225 int Yaz_Proxy::set_config(const char *config)
228 m_config = new Yaz_ProxyConfig();
229 xfree(m_config_fname);
230 m_config_fname = xstrdup(config);
231 int r = m_config->read_xml(config);
233 m_config->get_generic_info(&m_log_mask, &m_max_clients);
237 void Yaz_Proxy::set_default_target(const char *target)
239 xfree (m_default_target);
240 m_default_target = 0;
242 m_default_target = (char *) xstrdup (target);
245 void Yaz_Proxy::set_proxy_authentication (const char *auth)
247 xfree (m_proxy_authentication);
248 m_proxy_authentication = 0;
250 m_proxy_authentication = (char *) xstrdup (auth);
252 void Yaz_Proxy::set_proxy_negotiation (const char *charset, const char *lang)
254 yaz_log(YLOG_LOG, "%sSet the proxy negotiation: charset to '%s',
255 language to '%s'", m_session_str, (charset)?charset:"none",
257 xfree (m_proxy_negotiation_charset);
258 xfree (m_proxy_negotiation_lang);
259 m_proxy_negotiation_charset = m_proxy_negotiation_lang = 0;
261 m_proxy_negotiation_charset = (char *) xstrdup (charset);
263 m_proxy_negotiation_lang = (char *) xstrdup (lang);
265 Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
268 return m_parent->check_reconfigure();
270 Yaz_ProxyConfig *cfg = m_config;
273 yaz_log(YLOG_LOG, "reconfigure");
275 if (m_config_fname && cfg)
277 yaz_log(YLOG_LOG, "reconfigure config %s", m_config_fname);
278 int r = cfg->read_xml(m_config_fname);
280 yaz_log(YLOG_WARN, "reconfigure failed");
284 cfg->get_generic_info(&m_log_mask, &m_max_clients);
288 yaz_log(YLOG_LOG, "reconfigure");
294 IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
295 *the_PDU_Observable, int fd)
298 Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable, this);
299 new_proxy->m_config = 0;
300 new_proxy->m_config_fname = 0;
301 new_proxy->timeout(m_client_idletime);
302 new_proxy->m_target_idletime = m_target_idletime;
303 new_proxy->set_default_target(m_default_target);
304 new_proxy->m_max_clients = m_max_clients;
305 new_proxy->m_log_mask = m_log_mask;
306 new_proxy->set_APDU_log(get_APDU_log());
307 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
308 new_proxy->set_APDU_yazlog(1);
310 new_proxy->set_APDU_yazlog(0);
311 new_proxy->set_proxy_authentication(m_proxy_authentication);
312 new_proxy->set_proxy_negotiation(m_proxy_negotiation_charset,
313 m_proxy_negotiation_lang);
314 sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
316 yaz_log (YLOG_LOG, "%sNew session %s", new_proxy->m_session_str,
317 the_PDU_Observable->getpeername());
321 char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
324 Z_OtherInformationUnit *oi;
326 ent.proto = PROTO_Z3950;
327 ent.oclass = CLASS_USERINFO;
328 ent.value = (oid_value) VAL_COOKIE;
329 assert (oid_ent_to_oid (&ent, oid));
331 if (oid_ent_to_oid (&ent, oid) &&
332 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
333 oi->which == Z_OtherInfo_characterInfo)
334 return oi->information.characterInfo;
337 char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
340 Z_OtherInformationUnit *oi;
342 ent.proto = PROTO_Z3950;
343 ent.oclass = CLASS_USERINFO;
344 ent.value = (oid_value) VAL_PROXY;
345 if (oid_ent_to_oid (&ent, oid) &&
346 (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
347 oi->which == Z_OtherInfo_characterInfo)
348 return oi->information.characterInfo;
351 const char *Yaz_Proxy::load_balance(const char **url)
353 int zurl_in_use[MAX_ZURL_PLEX];
354 int zurl_in_spare[MAX_ZURL_PLEX];
358 for (i = 0; i<MAX_ZURL_PLEX; i++)
361 zurl_in_spare[i] = 0;
363 for (c = m_parent->m_clientPool; c; c = c->m_next)
365 for (i = 0; url[i]; i++)
366 if (!strcmp(url[i], c->get_hostname()))
369 if (c->m_cookie == 0 && c->m_server == 0 && c->m_waiting == 0)
373 int min_use = 100000;
374 int spare_for_min = 0;
376 const char *ret_min = 0;
377 const char *ret_spare = 0;
378 for (i = 0; url[i]; i++)
380 yaz_log(YLOG_DEBUG, "%szurl=%s use=%d spare=%d",
381 m_session_str, url[i], zurl_in_use[i], zurl_in_spare[i]);
382 if (min_use > zurl_in_use[i])
385 min_use = zurl_in_use[i];
386 spare_for_min = zurl_in_spare[i];
388 if (max_spare < zurl_in_spare[i])
391 max_spare = zurl_in_spare[i];
394 // use the one with minimum connections if spare is > 3
395 if (spare_for_min > 3)
397 // use one with most spares (if any)
403 Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
404 const char *proxy_host)
407 Yaz_Proxy *parent = m_parent;
408 Yaz_ProxyClient *c = m_client;
412 const char *url[MAX_ZURL_PLEX];
413 Yaz_ProxyConfig *cfg = check_reconfigure();
417 /* only to be enabled for debugging... */
418 if (!strcmp(proxy_host, "stop"))
421 xfree(m_default_target);
422 m_default_target = xstrdup(proxy_host);
424 proxy_host = m_default_target;
425 int client_idletime = -1;
426 const char *cql2rpn_fname = 0;
427 const char *authentication = 0;
428 const char *negotiation_charset = 0;
429 const char *negotiation_lang = 0;
430 url[0] = m_default_target;
435 cfg->get_target_info(proxy_host, url, &m_bw_max,
436 &m_pdu_max, &m_max_record_retrieve,
437 &m_target_idletime, &client_idletime,
438 &parent->m_max_clients,
439 &m_keepalive_limit_bw,
440 &m_keepalive_limit_pdu,
444 &negotiation_charset,
447 if (client_idletime != -1)
449 m_client_idletime = client_idletime;
450 timeout(m_client_idletime);
453 m_cql2rpn.set_pqf_file(cql2rpn_fname);
455 set_proxy_authentication(authentication);
456 if (negotiation_charset || negotiation_lang)
457 set_proxy_negotiation(negotiation_charset,
461 yaz_log(YLOG_LOG, "%sNo default target", m_session_str);
464 // we don't handle multiplexing for cookie session, so we just
465 // pick the first one in this case (anonymous users will be able
466 // to use any backend)
467 if (cookie && *cookie)
468 m_proxyTarget = (char*) xstrdup(url[0]);
470 m_proxyTarget = (char*) xstrdup(load_balance(url));
472 if (cookie && *cookie)
473 { // search in sessions with a cookie
474 for (c = parent->m_clientPool; c; c = c->m_next)
477 assert (*c->m_prev == c);
478 if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
479 !strcmp(m_proxyTarget, c->get_hostname()))
482 // The following handles "cancel"
483 // If connection is busy (waiting for PDU) and
484 // we have an initRequest we can safely do re-open
485 if (c->m_waiting && apdu->which == Z_APDU_initRequest)
487 yaz_log (YLOG_LOG, "%s REOPEN target=%s", m_session_str,
494 c->m_last_resultCount = 0;
495 c->m_sr_transform = 0;
497 c->m_resultSetStartPoint = 0;
498 c->m_target_idletime = m_target_idletime;
499 if (c->client(m_proxyTarget))
506 c->m_seqno = parent->m_seqno;
507 if (c->m_server && c->m_server != this)
508 c->m_server->m_client = 0;
511 yaz_log (YLOG_DEBUG, "get_client 1 %p %p", this, c);
517 apdu->which == Z_APDU_initRequest &&
518 apdu->u.initRequest->idAuthentication == 0 &&
519 !ODR_MASK_GET(apdu->u.initRequest->options, Z_Options_negotiationModel))
521 // anonymous sessions without cookie.
522 // if authentication is set it is NOT anonymous se we can't share them.
523 // If charset and lang negotiation is use it is NOT anonymous session too.
524 for (c = parent->m_clientPool; c; c = c->m_next)
527 assert(*c->m_prev == c);
528 if (c->m_server == 0 && c->m_cookie == 0 &&
530 !strcmp(m_proxyTarget, c->get_hostname()))
533 yaz_log (YLOG_LOG, "%sREUSE %d %s",
534 m_session_str, parent->m_seqno, c->get_hostname());
536 c->m_seqno = parent->m_seqno;
537 assert(c->m_server == 0);
540 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
541 c->set_APDU_yazlog(1);
543 c->set_APDU_yazlog(0);
555 if (apdu->which != Z_APDU_initRequest)
557 yaz_log (YLOG_LOG, "%sno init request as first PDU", m_session_str);
560 Z_InitRequest *initRequest = apdu->u.initRequest;
562 if (!initRequest->idAuthentication)
564 if (m_proxy_authentication)
566 initRequest->idAuthentication =
567 (Z_IdAuthentication *)
568 odr_malloc (odr_encode(),
569 sizeof(*initRequest->idAuthentication));
570 initRequest->idAuthentication->which =
571 Z_IdAuthentication_open;
572 initRequest->idAuthentication->u.open =
573 odr_strdup (odr_encode(), m_proxy_authentication);
578 // the client use authentication. We set the keepalive PDU
579 // to 0 so we don't cache it in releaseClient
580 m_keepalive_limit_pdu = 0;
582 // go through list of clients - and find the lowest/oldest one.
583 Yaz_ProxyClient *c_min = 0;
585 int no_of_clients = 0;
586 if (parent->m_clientPool)
587 yaz_log (YLOG_DEBUG, "Existing sessions");
588 for (c = parent->m_clientPool; c; c = c->m_next)
590 yaz_log (YLOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
591 c->m_waiting, c->get_hostname(),
592 c->m_cookie ? c->m_cookie : "");
594 if (min_seq < 0 || c->m_seqno < min_seq)
596 min_seq = c->m_seqno;
600 if (no_of_clients >= parent->m_max_clients)
603 if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
605 yaz_log (YLOG_LOG, "%sMAXCLIENTS %d Destroy %d",
606 m_session_str, parent->m_max_clients, c->m_seqno);
607 if (c->m_server && c->m_server != this)
613 yaz_log (YLOG_LOG, "%sMAXCLIENTS %d Reuse %d %d %s",
614 m_session_str, parent->m_max_clients,
615 c->m_seqno, parent->m_seqno, c->get_hostname());
619 c->m_cookie = xstrdup(cookie);
620 c->m_seqno = parent->m_seqno;
621 if (c->m_server && c->m_server != this)
623 c->m_server->m_client = 0;
627 c->m_target_idletime = m_target_idletime;
628 c->timeout(m_target_idletime);
630 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
631 c->set_APDU_yazlog(1);
633 c->set_APDU_yazlog(0);
640 yaz_log (YLOG_LOG, "%sNEW %d %s",
641 m_session_str, parent->m_seqno, m_proxyTarget);
642 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
643 c->m_next = parent->m_clientPool;
645 c->m_next->m_prev = &c->m_next;
646 parent->m_clientPool = c;
647 c->m_prev = &parent->m_clientPool;
653 c->m_cookie = xstrdup(cookie);
655 c->m_seqno = parent->m_seqno;
657 c->m_last_resultCount = 0;
660 c->m_sr_transform = 0;
662 c->m_resultSetStartPoint = 0;
664 if (c->client(m_proxyTarget))
669 c->m_target_idletime = m_target_idletime;
672 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
673 c->set_APDU_yazlog(1);
675 c->set_APDU_yazlog(0);
677 yaz_log (YLOG_DEBUG, "get_client 3 %p %p", this, c);
680 void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
683 for (i = 0; i<num; i++)
686 Z_DefaultDiagFormat *r;
687 Z_DiagRec *p = pp[i];
688 if (p->which != Z_DiagRec_defaultFormat)
690 yaz_log(YLOG_LOG, "%sError no diagnostics", m_session_str);
694 r = p->u.defaultFormat;
695 if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
696 ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
697 yaz_log(YLOG_LOG, "%sError unknown diagnostic set", m_session_str);
700 case Z_DefaultDiagFormat_v2Addinfo:
701 yaz_log(YLOG_LOG, "%sError %d %s:%s",
703 *r->condition, diagbib1_str(*r->condition),
706 case Z_DefaultDiagFormat_v3Addinfo:
707 yaz_log(YLOG_LOG, "%sError %d %s:%s",
709 *r->condition, diagbib1_str(*r->condition),
716 int Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p, Z_APDU *apdu)
718 if (!m_stylesheet_xsp || p->num_records <= 0)
719 return 0; /* no XSLT to be done ... */
721 m_stylesheet_offset = 0;
722 m_stylesheet_nprl = p;
723 m_stylesheet_apdu = apdu;
728 void Yaz_Proxy::convert_xsl_delay()
731 Z_NamePlusRecord *npr = m_stylesheet_nprl->records[m_stylesheet_offset];
732 if (npr->which == Z_NamePlusRecord_databaseRecord)
734 Z_External *r = npr->u.databaseRecord;
735 if (r->which == Z_External_octet)
738 fwrite((char*) r->u.octet_aligned->buf, 1, r->u.octet_aligned->len, stdout);
740 xmlDocPtr res, doc = xmlParseMemory(
741 (char*) r->u.octet_aligned->buf,
742 r->u.octet_aligned->len);
745 yaz_log(YLOG_LOG, "%sXSLT convert %d",
746 m_session_str, m_stylesheet_offset);
747 res = xsltApplyStylesheet((xsltStylesheetPtr) m_stylesheet_xsp,
754 xmlDocDumpFormatMemory (res, &out_buf, &out_len, 1);
756 m_stylesheet_nprl->records[m_stylesheet_offset]->
758 z_ext_record(odr_encode(), VAL_TEXT_XML,
759 (char*) out_buf, out_len);
768 m_stylesheet_offset++;
769 if (m_stylesheet_offset == m_stylesheet_nprl->num_records)
771 m_stylesheet_nprl = 0;
773 if (m_stylesheet_xsp)
774 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
776 m_stylesheet_xsp = 0;
777 timeout(m_client_idletime);
778 send_PDU_convert(m_stylesheet_apdu);
784 void Yaz_Proxy::convert_to_frontend_type(Z_NamePlusRecordList *p)
786 if (m_frontend_type != VAL_NONE)
789 for (i = 0; i < p->num_records; i++)
791 Z_NamePlusRecord *npr = p->records[i];
792 if (npr->which == Z_NamePlusRecord_databaseRecord)
794 Z_External *r = npr->u.databaseRecord;
795 if (r->which == Z_External_octet)
798 if (m_usemarcon_ini_stage1 && *m_usemarcon_ini_stage1)
800 if (!m_usemarcon->m_stage1)
802 m_usemarcon->m_stage1 = new CDetails();
804 m_usemarcon->m_stage1->SetIniFileName(m_usemarcon_ini_stage1);
805 m_usemarcon->m_stage1->SetMarcRecord((char*) r->u.octet_aligned->buf, r->u.octet_aligned->len);
806 int res = m_usemarcon->m_stage1->Start();
811 m_usemarcon->m_stage1->GetMarcRecord(converted, convlen);
812 if (m_usemarcon_ini_stage2 && *m_usemarcon_ini_stage2)
814 if (!m_usemarcon->m_stage2)
816 m_usemarcon->m_stage2 = new CDetails();
818 m_usemarcon->m_stage2->SetIniFileName(m_usemarcon_ini_stage2);
819 m_usemarcon->m_stage2->SetMarcRecord(converted, convlen);
820 res = m_usemarcon->m_stage2->Start();
824 m_usemarcon->m_stage2->GetMarcRecord(converted, convlen);
828 yaz_log(YLOG_LOG, "%sUSEMARCON stage 2 error %d", m_session_str, res);
831 npr->u.databaseRecord =
832 z_ext_record(odr_encode(),
840 yaz_log(YLOG_LOG, "%sUSEMARCON stage 1 error %d", m_session_str, res);
845 npr->u.databaseRecord =
846 z_ext_record(odr_encode(),
848 (char*) r->u.octet_aligned->buf,
849 r->u.octet_aligned->len);
856 void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p,
857 const char *backend_charset)
860 if (!backend_charset)
861 backend_charset = "MARC-8";
862 yaz_iconv_t cd = yaz_iconv_open("UTF-8", backend_charset);
863 yaz_marc_t mt = yaz_marc_create();
864 yaz_marc_xml(mt, YAZ_MARC_MARCXML);
865 yaz_marc_iconv(mt, cd);
866 for (i = 0; i < p->num_records; i++)
868 Z_NamePlusRecord *npr = p->records[i];
869 if (npr->which == Z_NamePlusRecord_databaseRecord)
871 Z_External *r = npr->u.databaseRecord;
872 if (r->which == Z_External_octet)
876 if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
877 r->u.octet_aligned->len,
880 npr->u.databaseRecord = z_ext_record(odr_encode(),
889 yaz_marc_destroy(mt);
892 void Yaz_Proxy::logtime()
894 #if HAVE_GETTIMEOFDAY
895 struct timeval *tv = (struct timeval*) m_time_tv;
899 gettimeofday(&tv1, 0);
900 long diff = (tv1.tv_sec - tv->tv_sec)*1000000 +
901 (tv1.tv_usec - tv->tv_usec);
903 yaz_log(YLOG_LOG, "%sElapsed %ld.%03ld", m_session_str,
904 diff/1000000, (diff/1000)%1000);
911 int Yaz_Proxy::send_http_response(int code)
913 ODR o = odr_encode();
914 Z_GDU *gdu = z_get_HTTP_Response(o, code);
915 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
917 hres->version = odr_strdup(o, m_http_version);
918 if (m_http_keepalive)
919 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
923 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
925 yaz_log (YLOG_LOG, "%sSending %s to client", m_session_str,
929 int r = send_GDU(gdu, &len);
931 m_bw_stat.add_bytes(len);
936 int Yaz_Proxy::send_srw_response(Z_SRW_PDU *srw_pdu)
938 ODR o = odr_encode();
939 const char *ctype = "text/xml";
940 Z_GDU *gdu = z_get_HTTP_Response(o, 200);
941 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
943 hres->version = odr_strdup(o, m_http_version);
944 z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
945 if (m_http_keepalive)
946 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
950 static Z_SOAP_Handler soap_handlers[2] = {
952 {"http://www.loc.gov/zing/srw/", 0,
953 (Z_SOAP_fun) yaz_srw_codec},
958 Z_SOAP *soap_package = (Z_SOAP*) odr_malloc(o, sizeof(Z_SOAP));
959 soap_package->which = Z_SOAP_generic;
960 soap_package->u.generic =
961 (Z_SOAP_Generic *) odr_malloc(o, sizeof(*soap_package->u.generic));
962 soap_package->u.generic->no = 0;
963 soap_package->u.generic->ns = soap_handlers[0].ns;
964 soap_package->u.generic->p = (void *) srw_pdu;
965 soap_package->ns = m_soap_ns;
966 z_soap_codec_enc_xsl(o, &soap_package,
967 &hres->content_buf, &hres->content_len,
968 soap_handlers, 0, m_s2z_stylesheet);
969 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
971 yaz_log (YLOG_LOG, "%sSending %s to client", m_session_str,
975 int r = send_GDU(gdu, &len);
977 m_bw_stat.add_bytes(len);
982 int Yaz_Proxy::send_to_srw_client_error(int srw_error, const char *add)
984 ODR o = odr_encode();
985 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
986 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
988 srw_res->num_diagnostics = 1;
989 srw_res->diagnostics = (Z_SRW_diagnostic *)
990 odr_malloc(o, sizeof(*srw_res->diagnostics));
991 yaz_mk_std_diagnostic(o, srw_res->diagnostics, srw_error, add);
992 return send_srw_response(srw_pdu);
995 int Yaz_Proxy::z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
996 Z_DefaultDiagFormat *ddf)
998 int bib1_code = *ddf->condition;
999 if (bib1_code == 109)
1001 srw_res->num_diagnostics = 1;
1002 srw_res->diagnostics = (Z_SRW_diagnostic *)
1003 odr_malloc(o, sizeof(*srw_res->diagnostics));
1004 yaz_mk_std_diagnostic(o, srw_res->diagnostics,
1005 yaz_diag_bib1_to_srw(*ddf->condition),
1010 int Yaz_Proxy::send_to_srw_client_ok(int hits, Z_Records *records, int start)
1012 ODR o = odr_encode();
1013 Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
1014 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
1016 srw_res->numberOfRecords = odr_intdup (o, hits);
1017 if (records && records->which == Z_Records_DBOSD)
1019 srw_res->num_records =
1020 records->u.databaseOrSurDiagnostics->num_records;
1022 srw_res->records = (Z_SRW_record *)
1023 odr_malloc(o, srw_res->num_records * sizeof(Z_SRW_record));
1024 for (i = 0; i < srw_res->num_records; i++)
1026 Z_NamePlusRecord *npr = records->u.databaseOrSurDiagnostics->records[i];
1027 if (npr->which != Z_NamePlusRecord_databaseRecord)
1029 srw_res->records[i].recordSchema = "diagnostic";
1030 srw_res->records[i].recordPacking = m_s2z_packing;
1031 srw_res->records[i].recordData_buf = "67";
1032 srw_res->records[i].recordData_len = 2;
1033 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
1036 Z_External *r = npr->u.databaseRecord;
1037 oident *ent = oid_getentbyoid(r->direct_reference);
1038 if (r->which == Z_External_octet && ent->value == VAL_TEXT_XML)
1040 srw_res->records[i].recordSchema = m_schema;
1041 srw_res->records[i].recordPacking = m_s2z_packing;
1042 srw_res->records[i].recordData_buf = (char*)
1043 r->u.octet_aligned->buf;
1044 srw_res->records[i].recordData_len = r->u.octet_aligned->len;
1045 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
1049 srw_res->records[i].recordSchema = "diagnostic";
1050 srw_res->records[i].recordPacking = m_s2z_packing;
1051 srw_res->records[i].recordData_buf = "67";
1052 srw_res->records[i].recordData_len = 2;
1053 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
1057 if (records && records->which == Z_Records_NSD)
1060 http_code = z_to_srw_diag(odr_encode(), srw_res,
1061 records->u.nonSurrogateDiagnostic);
1063 return send_http_response(http_code);
1065 return send_srw_response(srw_pdu);
1069 int Yaz_Proxy::send_srw_explain_response(Z_SRW_diagnostic *diagnostics,
1070 int num_diagnostics)
1072 Yaz_ProxyConfig *cfg = check_reconfigure();
1076 char *b = cfg->get_explain_doc(odr_encode(), 0 /* target */,
1077 m_s2z_database, &len);
1080 Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
1081 Z_SRW_explainResponse *er = res->u.explain_response;
1083 er->record.recordData_buf = b;
1084 er->record.recordData_len = len;
1085 er->record.recordPacking = m_s2z_packing;
1086 er->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
1088 er->diagnostics = diagnostics;
1089 er->num_diagnostics = num_diagnostics;
1090 return send_srw_response(res);
1093 return send_http_response(404);
1096 int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu)
1100 if (apdu->which == Z_APDU_initResponse)
1102 Z_InitResponse *res = apdu->u.initResponse;
1103 if (*res->result == 0)
1105 send_to_srw_client_error(3, 0);
1107 else if (!m_s2z_search_apdu)
1109 send_srw_explain_response(0, 0);
1113 handle_incoming_Z_PDU(m_s2z_search_apdu);
1116 else if (m_s2z_search_apdu && apdu->which == Z_APDU_searchResponse)
1118 m_s2z_search_apdu = 0;
1119 Z_SearchResponse *res = apdu->u.searchResponse;
1120 m_s2z_hit_count = *res->resultCount;
1121 if (res->records && res->records->which == Z_Records_NSD)
1123 send_to_srw_client_ok(0, res->records, 1);
1125 else if (m_s2z_present_apdu && m_s2z_hit_count > 0)
1128 Z_PresentRequest *pr = m_s2z_present_apdu->u.presentRequest;
1130 if (*pr->resultSetStartPoint <= m_s2z_hit_count)
1132 if (*pr->numberOfRecordsRequested+ *pr->resultSetStartPoint
1134 *pr->numberOfRecordsRequested =
1135 1 + m_s2z_hit_count - *pr->resultSetStartPoint;
1137 handle_incoming_Z_PDU(m_s2z_present_apdu);
1141 m_s2z_present_apdu = 0;
1142 send_to_srw_client_ok(m_s2z_hit_count, res->records, 1);
1145 else if (m_s2z_present_apdu && apdu->which == Z_APDU_presentResponse)
1148 *m_s2z_present_apdu->u.presentRequest->resultSetStartPoint;
1150 m_s2z_present_apdu = 0;
1151 Z_PresentResponse *res = apdu->u.presentResponse;
1152 send_to_srw_client_ok(m_s2z_hit_count, res->records, start);
1158 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1159 yaz_log (YLOG_LOG, "%sSending %s to client", m_session_str,
1161 int r = send_Z_PDU(apdu, &len);
1162 m_bytes_sent += len;
1163 m_bw_stat.add_bytes(len);
1170 int Yaz_Proxy::send_to_client(Z_APDU *apdu)
1172 int kill_session = 0;
1173 Z_ReferenceId **new_id = get_referenceIdP(apdu);
1176 *new_id = m_referenceId;
1178 if (apdu->which == Z_APDU_searchResponse)
1180 Z_SearchResponse *sr = apdu->u.searchResponse;
1181 Z_Records *p = sr->records;
1182 if (p && p->which == Z_Records_NSD)
1184 Z_DiagRec dr, *dr_p = &dr;
1185 dr.which = Z_DiagRec_defaultFormat;
1186 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
1188 *sr->searchStatus = 0;
1189 display_diagrecs(&dr_p, 1);
1193 if (p && p->which == Z_Records_DBOSD)
1197 || m_usemarcon_ini_stage1 || m_usemarcon_ini_stage2
1200 convert_to_frontend_type(p->u.databaseOrSurDiagnostics);
1202 convert_to_marcxml(p->u.databaseOrSurDiagnostics,
1204 if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
1208 if (sr->resultCount)
1210 yaz_log(YLOG_LOG, "%s%d hits", m_session_str,
1212 if (*sr->resultCount < 0)
1214 m_invalid_session = 1;
1217 *sr->searchStatus = 0;
1219 create_nonSurrogateDiagnostics(odr_encode(), 2, 0);
1220 *sr->resultCount = 0;
1225 else if (apdu->which == Z_APDU_presentResponse)
1227 Z_PresentResponse *sr = apdu->u.presentResponse;
1228 Z_Records *p = sr->records;
1229 if (p && p->which == Z_Records_NSD)
1231 Z_DiagRec dr, *dr_p = &dr;
1232 dr.which = Z_DiagRec_defaultFormat;
1233 dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
1234 if (*sr->presentStatus == Z_PresentStatus_success)
1235 *sr->presentStatus = Z_PresentStatus_failure;
1236 display_diagrecs(&dr_p, 1);
1238 if (p && p->which == Z_Records_DBOSD)
1242 || m_usemarcon_ini_stage1 || m_usemarcon_ini_stage2
1245 convert_to_frontend_type(p->u.databaseOrSurDiagnostics);
1247 convert_to_marcxml(p->u.databaseOrSurDiagnostics,
1249 if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
1253 else if (apdu->which == Z_APDU_initResponse)
1255 //Get and check negotiation record
1256 //from init response.
1257 handle_charset_lang_negotiation(apdu);
1259 if (m_initRequest_options)
1262 (Odr_bitmask *)odr_malloc(odr_encode(),
1263 sizeof(Odr_bitmask));
1264 ODR_MASK_ZERO(nopt);
1267 for (i = 0; i<24; i++)
1268 if (ODR_MASK_GET(m_initRequest_options, i) &&
1269 ODR_MASK_GET(apdu->u.initResponse->options, i))
1270 ODR_MASK_SET(nopt, i);
1271 apdu->u.initResponse->options = nopt;
1273 if (m_initRequest_version)
1275 Z_ProtocolVersion *nopt =
1276 (Odr_bitmask *)odr_malloc(odr_encode(),
1277 sizeof(Odr_bitmask));
1278 ODR_MASK_ZERO(nopt);
1281 for (i = 0; i<8; i++)
1282 if (ODR_MASK_GET(m_initRequest_version, i) &&
1283 ODR_MASK_GET(apdu->u.initResponse->protocolVersion, i))
1284 ODR_MASK_SET(nopt, i);
1285 apdu->u.initResponse->protocolVersion = nopt;
1287 apdu->u.initResponse->preferredMessageSize =
1288 odr_intdup(odr_encode(),
1289 m_client->m_initResponse_preferredMessageSize >
1290 m_initRequest_preferredMessageSize ?
1291 m_initRequest_preferredMessageSize :
1292 m_client->m_initResponse_preferredMessageSize);
1293 apdu->u.initResponse->maximumRecordSize =
1294 odr_intdup(odr_encode(),
1295 m_client->m_initResponse_maximumRecordSize >
1296 m_initRequest_maximumRecordSize ?
1297 m_initRequest_maximumRecordSize :
1298 m_client->m_initResponse_maximumRecordSize);
1301 int r = send_PDU_convert(apdu);
1308 m_parent->pre_init();
1313 int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
1316 const char *apdu_name_tmp = apdu_name(apdu);
1317 int r = send_Z_PDU(apdu, &len);
1318 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
1319 yaz_log (YLOG_LOG, "%sSending %s to %s %d bytes",
1321 apdu_name_tmp, get_hostname(), len);
1322 m_bytes_sent += len;
1326 Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
1328 if (apdu->which == Z_APDU_presentRequest)
1330 Z_PresentRequest *pr = apdu->u.presentRequest;
1331 int toget = *pr->numberOfRecordsRequested;
1332 int start = *pr->resultSetStartPoint;
1334 yaz_log(YLOG_LOG, "%sPresent %s %d+%d", m_session_str,
1335 pr->resultSetId, start, toget);
1337 if (*m_parent->m_optimize == '0')
1340 if (!m_client->m_last_resultSetId)
1342 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1343 new_apdu->u.presentResponse->records =
1344 create_nonSurrogateDiagnostics(odr_encode(), 30,
1346 send_to_client(new_apdu);
1349 if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
1351 if (start+toget-1 > m_client->m_last_resultCount)
1353 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1354 new_apdu->u.presentResponse->records =
1355 create_nonSurrogateDiagnostics(odr_encode(), 13, 0);
1356 send_to_client(new_apdu);
1359 Z_NamePlusRecordList *npr;
1361 yaz_log(YLOG_LOG, "%sCache lookup %d+%d syntax=%s",
1362 m_session_str, start, toget, yaz_z3950oid_to_str(
1363 pr->preferredRecordSyntax, &oclass));
1365 if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
1366 pr->preferredRecordSyntax,
1367 pr->recordComposition))
1369 yaz_log (YLOG_LOG, "%sReturned cached records for present request",
1371 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1372 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1374 new_apdu->u.presentResponse->numberOfRecordsReturned
1375 = odr_intdup(odr_encode(), toget);
1377 new_apdu->u.presentResponse->records = (Z_Records*)
1378 odr_malloc(odr_encode(), sizeof(Z_Records));
1379 new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
1380 new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
1381 new_apdu->u.presentResponse->nextResultSetPosition =
1382 odr_intdup(odr_encode(), start+toget);
1384 send_to_client(new_apdu);
1390 if (apdu->which != Z_APDU_searchRequest)
1392 Z_SearchRequest *sr = apdu->u.searchRequest;
1393 Yaz_Z_Query *this_query = new Yaz_Z_Query;
1394 Yaz_Z_Databases this_databases;
1396 this_databases.set(sr->num_databaseNames, (const char **)
1399 this_query->set_Z_Query(sr->query);
1401 char query_str[120];
1402 this_query->print(query_str, sizeof(query_str)-1);
1403 yaz_log(YLOG_LOG, "%sSearch %s", m_session_str, query_str);
1405 if (*m_parent->m_optimize != '0' &&
1406 m_client->m_last_ok && m_client->m_last_query &&
1407 m_client->m_last_query->match(this_query) &&
1408 !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
1409 m_client->m_last_databases.match(this_databases))
1412 if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
1413 m_client->m_last_resultCount < *sr->largeSetLowerBound)
1415 Z_NamePlusRecordList *npr;
1416 int toget = *sr->mediumSetPresentNumber;
1417 Z_RecordComposition *comp = 0;
1419 if (toget > m_client->m_last_resultCount)
1420 toget = m_client->m_last_resultCount;
1422 if (sr->mediumSetElementSetNames)
1424 comp = (Z_RecordComposition *)
1425 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1426 comp->which = Z_RecordComp_simple;
1427 comp->u.simple = sr->mediumSetElementSetNames;
1430 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1431 sr->preferredRecordSyntax, comp))
1433 yaz_log (YLOG_LOG, "%sReturned cached records for medium set",
1435 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1436 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1437 new_apdu->u.searchResponse->resultCount =
1438 &m_client->m_last_resultCount;
1440 new_apdu->u.searchResponse->numberOfRecordsReturned
1441 = odr_intdup(odr_encode(), toget);
1443 new_apdu->u.searchResponse->presentStatus =
1444 odr_intdup(odr_encode(), Z_PresentStatus_success);
1445 new_apdu->u.searchResponse->records = (Z_Records*)
1446 odr_malloc(odr_encode(), sizeof(Z_Records));
1447 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1448 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1449 new_apdu->u.searchResponse->nextResultSetPosition =
1450 odr_intdup(odr_encode(), toget+1);
1451 send_to_client(new_apdu);
1457 // send present request (medium size)
1458 yaz_log (YLOG_LOG, "%sOptimizing search for medium set",
1461 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1462 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1463 pr->referenceId = sr->referenceId;
1464 pr->resultSetId = sr->resultSetName;
1465 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1466 *pr->numberOfRecordsRequested = toget;
1467 pr->recordComposition = comp;
1468 m_client->m_sr_transform = 1;
1472 else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
1473 m_client->m_last_resultCount <= 0)
1475 // large set. Return pseudo-search response immediately
1476 yaz_log (YLOG_LOG, "%sOptimizing search for large set",
1478 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1479 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1480 new_apdu->u.searchResponse->resultCount =
1481 &m_client->m_last_resultCount;
1482 send_to_client(new_apdu);
1487 Z_NamePlusRecordList *npr;
1488 int toget = m_client->m_last_resultCount;
1489 Z_RecordComposition *comp = 0;
1491 // send a present request (small set)
1493 if (sr->smallSetElementSetNames)
1495 comp = (Z_RecordComposition *)
1496 odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1497 comp->which = Z_RecordComp_simple;
1498 comp->u.simple = sr->smallSetElementSetNames;
1501 if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1502 sr->preferredRecordSyntax, comp))
1504 yaz_log (YLOG_LOG, "%sReturned cached records for small set",
1506 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1507 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1508 new_apdu->u.searchResponse->resultCount =
1509 &m_client->m_last_resultCount;
1511 new_apdu->u.searchResponse->numberOfRecordsReturned
1512 = odr_intdup(odr_encode(), toget);
1514 new_apdu->u.searchResponse->presentStatus =
1515 odr_intdup(odr_encode(), Z_PresentStatus_success);
1516 new_apdu->u.searchResponse->records = (Z_Records*)
1517 odr_malloc(odr_encode(), sizeof(Z_Records));
1518 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1519 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1520 new_apdu->u.searchResponse->nextResultSetPosition =
1521 odr_intdup(odr_encode(), toget+1);
1522 send_to_client(new_apdu);
1527 yaz_log (YLOG_LOG, "%sOptimizing search for small set",
1529 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1530 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1531 pr->referenceId = sr->referenceId;
1532 pr->resultSetId = sr->resultSetName;
1533 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1534 *pr->numberOfRecordsRequested = toget;
1535 pr->recordComposition = comp;
1536 m_client->m_sr_transform = 1;
1541 else // query doesn't match
1543 delete m_client->m_last_query;
1544 m_client->m_last_query = this_query;
1545 m_client->m_last_ok = 0;
1546 m_client->m_cache.clear();
1547 m_client->m_resultSetStartPoint = 0;
1549 xfree (m_client->m_last_resultSetId);
1550 m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
1552 m_client->m_last_databases.set(sr->num_databaseNames,
1553 (const char **) sr->databaseNames);
1559 void Yaz_Proxy::inc_request_no()
1561 char *cp = strchr(m_session_str, ' ');
1564 sprintf(cp+1, "%d ", m_request_no);
1567 void Yaz_Proxy::recv_GDU(Z_GDU *apdu, int len)
1571 m_bytes_recv += len;
1573 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1574 yaz_log (YLOG_LOG, "%sReceiving %s from client %d bytes",
1575 m_session_str, gdu_name(apdu), len);
1577 if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
1580 m_bw_stat.add_bytes(len);
1581 m_pdu_stat.add_bytes(1);
1583 #if HAVE_GETTIMEOFDAY
1584 gettimeofday((struct timeval *) m_time_tv, 0);
1587 int bw_total = m_bw_stat.get_total();
1588 int pdu_total = m_pdu_stat.get_total();
1593 if (bw_total > m_bw_max)
1595 reduce = (bw_total/m_bw_max);
1600 if (pdu_total > m_pdu_max)
1602 int nreduce = (m_pdu_max >= 60) ? 1 : 60/m_pdu_max;
1603 reduce = (reduce > nreduce) ? reduce : nreduce;
1609 yaz_log(YLOG_LOG, "%sdelay=%d bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
1610 m_session_str, reduce, bw_total, pdu_total,
1611 m_bw_max, m_pdu_max);
1613 m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
1614 timeout(reduce); // call us reduce seconds later
1616 else if (apdu->which == Z_GDU_Z3950)
1617 handle_incoming_Z_PDU(apdu->u.z3950);
1618 else if (apdu->which == Z_GDU_HTTP_Request)
1619 handle_incoming_HTTP(apdu->u.HTTP_Request);
1622 void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
1624 if (m_max_record_retrieve)
1626 if (apdu->which == Z_APDU_presentRequest)
1628 Z_PresentRequest *pr = apdu->u.presentRequest;
1629 if (pr->numberOfRecordsRequested &&
1630 *pr->numberOfRecordsRequested > m_max_record_retrieve)
1631 *pr->numberOfRecordsRequested = m_max_record_retrieve;
1635 void Yaz_Proxy::handle_charset_lang_negotiation(Z_APDU *apdu)
1637 if (apdu->which == Z_APDU_initRequest)
1639 if (m_initRequest_options &&
1640 !ODR_MASK_GET(m_initRequest_options, Z_Options_negotiationModel) &&
1641 (m_proxy_negotiation_charset || m_proxy_negotiation_lang))
1643 // There is not negotiation proposal from
1644 // client's side. OK. The proxy negotiation
1646 Z_InitRequest *initRequest = apdu->u.initRequest;
1647 Z_OtherInformation **otherInfo;
1648 Z_OtherInformationUnit *oi;
1649 get_otherInfoAPDU(apdu, &otherInfo);
1650 oi = update_otherInformation(otherInfo, 1, NULL, 0, 0);
1653 ODR_MASK_SET(initRequest->options,
1654 Z_Options_negotiationModel);
1655 oi->which = Z_OtherInfo_externallyDefinedInfo;
1656 oi->information.externallyDefinedInfo =
1657 yaz_set_proposal_charneg(odr_encode(),
1658 (const char**)&m_proxy_negotiation_charset,
1659 m_proxy_negotiation_charset ? 1:0,
1660 (const char**)&m_proxy_negotiation_lang,
1661 m_proxy_negotiation_lang ? 1:0,
1666 else if (apdu->which == Z_APDU_initResponse)
1668 Z_InitResponse *initResponse = apdu->u.initResponse;
1669 Z_OtherInformation **otherInfo;
1670 Z_OtherInformationUnit *oi;
1672 if (ODR_MASK_GET(initResponse->options, Z_Options_negotiationModel))
1678 get_otherInfoAPDU(apdu, &otherInfo);
1680 if (!otherInfo && !(*otherInfo))
1683 Z_CharSetandLanguageNegotiation *charneg =
1684 yaz_get_charneg_record(*otherInfo);
1689 yaz_get_response_charneg(m_referenceId_mem, charneg,
1690 &charset, &lang, &selected);
1692 yaz_log(YLOG_LOG, "%sAccepted charset - '%s' and lang - '%s'",
1693 m_session_str, (charset)?charset:"none", (lang)?lang:"none");
1695 if (m_initRequest_options &&
1696 ODR_MASK_GET(m_initRequest_options, Z_Options_negotiationModel))
1698 yaz_log(YLOG_LOG, "%sClient's negotiation record in use",
1701 else if (m_proxy_negotiation_charset || m_proxy_negotiation_lang)
1703 // negotiation-charset, negotiation-lang
1704 // elements of config file in use.
1706 yaz_log(YLOG_LOG, "%sProxy's negotiation record in use",
1709 // clear negotiation option.
1710 ODR_MASK_CLEAR(initResponse->options, Z_Options_negotiationModel);
1712 // Delete negotiation (charneg-3) entry.
1713 Z_OtherInformation *p = *otherInfo;
1714 for (int i=0; i<p->num_elements; i++)
1716 if (p->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
1719 p->list[i]->information.externallyDefinedInfo;
1720 struct oident *e = oid_getentbyoid(pext->direct_reference);
1722 if (e && e->value == VAL_CHARNEG3 && e->oclass == CLASS_NEGOT &&
1723 pext->which == Z_External_charSetandLanguageNegotiation)
1725 (p->num_elements)--;
1726 if(p->num_elements == 0)
1732 for (int j=i; j<p->num_elements;j++)
1733 p->list[j] = p->list[j+1];
1742 Z_Records *Yaz_Proxy::create_nonSurrogateDiagnostics(ODR odr,
1744 const char *addinfo)
1746 Z_Records *rec = (Z_Records *)
1747 odr_malloc (odr, sizeof(*rec));
1749 odr_malloc (odr, sizeof(*err));
1750 Z_DiagRec *drec = (Z_DiagRec *)
1751 odr_malloc (odr, sizeof(*drec));
1752 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1753 odr_malloc (odr, sizeof(*dr));
1755 rec->which = Z_Records_NSD;
1756 rec->u.nonSurrogateDiagnostic = dr;
1757 dr->diagnosticSetId =
1758 yaz_oidval_to_z3950oid (odr, CLASS_DIAGSET, VAL_BIB1);
1759 dr->condition = err;
1760 dr->which = Z_DefaultDiagFormat_v2Addinfo;
1761 dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
1765 Z_APDU *Yaz_Proxy::handle_query_transformation(Z_APDU *apdu)
1767 if (apdu->which == Z_APDU_searchRequest &&
1768 apdu->u.searchRequest->query &&
1769 apdu->u.searchRequest->query->which == Z_Query_type_104 &&
1770 apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
1772 Z_RPNQuery *rpnquery = 0;
1773 Z_SearchRequest *sr = apdu->u.searchRequest;
1776 yaz_log(YLOG_LOG, "%sCQL: %s", m_session_str,
1777 sr->query->u.type_104->u.cql);
1779 int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
1780 &rpnquery, odr_encode(),
1783 yaz_log(YLOG_LOG, "%sNo CQL to RPN table", m_session_str);
1786 yaz_log(YLOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
1787 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1789 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1790 new_apdu->u.searchResponse->records =
1791 create_nonSurrogateDiagnostics(odr_encode(),
1792 yaz_diag_srw_to_bib1(r),
1794 *new_apdu->u.searchResponse->searchStatus = 0;
1796 send_to_client(new_apdu);
1802 sr->query->which = Z_Query_type_1;
1803 sr->query->u.type_1 = rpnquery;
1810 Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
1812 if (apdu->which == Z_APDU_searchRequest)
1814 Z_SearchRequest *sr = apdu->u.searchRequest;
1818 Yaz_ProxyConfig *cfg = check_reconfigure();
1820 err = cfg->check_query(odr_encode(), m_default_target,
1821 sr->query, &addinfo);
1824 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1826 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1827 new_apdu->u.searchResponse->records =
1828 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1829 *new_apdu->u.searchResponse->searchStatus = 0;
1831 send_to_client(new_apdu);
1839 Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
1842 if (apdu->which == Z_APDU_searchRequest)
1844 Z_SearchRequest *sr = apdu->u.searchRequest;
1847 Yaz_ProxyConfig *cfg = check_reconfigure();
1849 Z_RecordComposition rc_temp, *rc = 0;
1850 if (sr->smallSetElementSetNames)
1852 rc_temp.which = Z_RecordComp_simple;
1853 rc_temp.u.simple = sr->smallSetElementSetNames;
1857 if (sr->preferredRecordSyntax)
1860 ent = oid_getentbyoid(sr->preferredRecordSyntax);
1861 m_frontend_type = ent->value;
1864 m_frontend_type = VAL_NONE;
1866 char *stylesheet_name = 0;
1868 err = cfg->check_syntax(odr_encode(),
1870 sr->preferredRecordSyntax, rc,
1871 &addinfo, &stylesheet_name, &m_schema,
1872 &m_backend_type, &m_backend_charset,
1873 &m_usemarcon_ini_stage1,
1874 &m_usemarcon_ini_stage2);
1875 if (stylesheet_name)
1877 m_parent->low_socket_close();
1880 if (m_stylesheet_xsp)
1881 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
1882 m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
1885 m_stylesheet_offset = 0;
1886 xfree(stylesheet_name);
1888 m_parent->low_socket_open();
1892 sr->smallSetElementSetNames = 0;
1893 sr->mediumSetElementSetNames = 0;
1897 sr->preferredRecordSyntax =
1898 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN,
1902 sr->preferredRecordSyntax =
1903 yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN,
1909 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1911 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1912 new_apdu->u.searchResponse->records =
1913 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1914 *new_apdu->u.searchResponse->searchStatus = 0;
1916 send_to_client(new_apdu);
1920 else if (m_backend_type)
1922 sr->preferredRecordSyntax =
1923 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN, m_backend_type);
1926 else if (apdu->which == Z_APDU_presentRequest)
1928 Z_PresentRequest *pr = apdu->u.presentRequest;
1931 Yaz_ProxyConfig *cfg = check_reconfigure();
1933 if (pr->preferredRecordSyntax)
1936 ent = oid_getentbyoid(pr->preferredRecordSyntax);
1937 m_frontend_type = ent->value;
1940 m_frontend_type = VAL_NONE;
1942 char *stylesheet_name = 0;
1944 err = cfg->check_syntax(odr_encode(), m_default_target,
1945 pr->preferredRecordSyntax,
1946 pr->recordComposition,
1947 &addinfo, &stylesheet_name, &m_schema,
1948 &m_backend_type, &m_backend_charset,
1949 &m_usemarcon_ini_stage1,
1950 &m_usemarcon_ini_stage2
1952 if (stylesheet_name)
1954 m_parent->low_socket_close();
1957 if (m_stylesheet_xsp)
1958 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
1959 m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
1962 m_stylesheet_offset = 0;
1963 xfree(stylesheet_name);
1965 m_parent->low_socket_open();
1969 pr->recordComposition = 0;
1973 pr->preferredRecordSyntax =
1974 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN,
1978 pr->preferredRecordSyntax =
1979 yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN,
1985 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1987 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1988 new_apdu->u.presentResponse->records =
1989 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
1990 *new_apdu->u.presentResponse->presentStatus =
1991 Z_PresentStatus_failure;
1993 send_to_client(new_apdu);
1997 else if (m_backend_type)
1999 pr->preferredRecordSyntax =
2000 yaz_str_to_z3950oid(odr_encode(), CLASS_RECSYN, m_backend_type);
2006 Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
2010 Z_ElementSetNames *esn = (Z_ElementSetNames *)
2011 odr_malloc(o, sizeof(Z_ElementSetNames));
2012 esn->which = Z_ElementSetNames_generic;
2013 esn->u.generic = odr_strdup(o, schema);
2017 void Yaz_Proxy::srw_get_client(const char *db, const char **backend_db)
2020 Yaz_ProxyConfig *cfg = check_reconfigure();
2022 t = cfg->get_explain_name(db, backend_db);
2024 if (m_client && m_default_target && t && strcmp(m_default_target, t))
2031 xfree(m_default_target);
2032 m_default_target = xstrdup(t);
2036 int Yaz_Proxy::file_access(Z_HTTP_Request *hreq)
2039 yaz_log(YLOG_LOG, "file_access");
2040 if (strcmp(hreq->method, "GET"))
2042 if (hreq->path[0] != '/')
2044 yaz_log(YLOG_WARN, "Bad path: %s", hreq->path);
2047 const char *cp = hreq->path;
2050 if (*cp == '/' && strchr("/.", cp[1]))
2052 yaz_log(YLOG_WARN, "Bad path: %s", hreq->path);
2057 const char *fname = hreq->path+1;
2058 if (stat(fname, &sbuf))
2060 yaz_log(YLOG_WARN|YLOG_ERRNO, "%s: stat failed", fname);
2063 if ((sbuf.st_mode & S_IFMT) != S_IFREG)
2065 yaz_log(YLOG_WARN, "%s: not a regular file", fname);
2068 if (sbuf.st_size > (off_t) 1000000)
2070 yaz_log(YLOG_WARN, "%s: too large for transfer", fname);
2074 ODR o = odr_encode();
2075 Yaz_ProxyConfig *cfg = check_reconfigure();
2076 const char *ctype = cfg->check_mime_type(fname);
2077 Z_GDU *gdu = z_get_HTTP_Response(o, 200);
2078 Z_HTTP_Response *hres = gdu->u.HTTP_Response;
2080 hres->version = odr_strdup(o, m_http_version);
2081 z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
2082 if (m_http_keepalive)
2083 z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
2087 hres->content_len = sbuf.st_size;
2088 hres->content_buf = (char*) odr_malloc(o, hres->content_len);
2089 FILE *f = fopen(fname, "rb");
2092 fread(hres->content_buf, 1, hres->content_len, f);
2099 if (m_log_mask & PROXY_LOG_REQ_CLIENT)
2101 yaz_log (YLOG_LOG, "%sSending file %s to client", m_session_str,
2105 send_GDU(gdu, &len);
2109 void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
2113 odr_destroy(m_s2z_odr_init);
2116 if (m_s2z_odr_search)
2118 odr_destroy(m_s2z_odr_search);
2119 m_s2z_odr_search = 0;
2122 m_http_keepalive = 0;
2124 if (!strcmp(hreq->version, "1.0"))
2126 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
2127 if (v && !strcmp(v, "Keep-Alive"))
2128 m_http_keepalive = 1;
2130 m_http_keepalive = 0;
2131 m_http_version = "1.0";
2135 const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
2136 if (v && !strcmp(v, "close"))
2137 m_http_keepalive = 0;
2139 m_http_keepalive = 1;
2140 m_http_version = "1.1";
2143 Z_SRW_PDU *srw_pdu = 0;
2144 Z_SOAP *soap_package = 0;
2146 Z_SRW_diagnostic *diagnostic = 0;
2147 int num_diagnostic = 0;
2149 if (file_access(hreq))
2153 else if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
2155 || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
2156 &charset, &diagnostic, &num_diagnostic) == 0)
2158 m_s2z_odr_init = odr_createmem(ODR_ENCODE);
2159 m_s2z_odr_search = odr_createmem(ODR_ENCODE);
2160 m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
2161 m_s2z_init_apdu = 0;
2162 m_s2z_search_apdu = 0;
2163 m_s2z_present_apdu = 0;
2165 m_s2z_stylesheet = 0;
2167 if (srw_pdu->which == Z_SRW_searchRetrieve_request)
2169 Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
2171 const char *backend_db = srw_req->database;
2172 srw_get_client(srw_req->database, &backend_db);
2174 m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
2175 // recordXPath unsupported.
2176 if (srw_req->recordXPath)
2178 yaz_add_srw_diagnostic(odr_decode(),
2179 &diagnostic, &num_diagnostic,
2183 if (srw_req->sort_type != Z_SRW_sort_type_none)
2185 yaz_add_srw_diagnostic(odr_decode(),
2186 &diagnostic, &num_diagnostic,
2190 if (srw_req->stylesheet)
2192 odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
2194 // set packing for response records ..
2195 if (srw_req->recordPacking &&
2196 !strcmp(srw_req->recordPacking, "xml"))
2197 m_s2z_packing = Z_SRW_recordPacking_XML;
2199 m_s2z_packing = Z_SRW_recordPacking_string;
2203 Z_SRW_PDU *srw_pdu =
2204 yaz_srw_get(odr_encode(),
2205 Z_SRW_searchRetrieve_response);
2206 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
2208 srw_res->diagnostics = diagnostic;
2209 srw_res->num_diagnostics = num_diagnostic;
2210 send_srw_response(srw_pdu);
2214 // prepare search PDU
2215 m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
2216 Z_APDU_searchRequest);
2217 Z_SearchRequest *z_searchRequest =
2218 m_s2z_search_apdu->u.searchRequest;
2220 z_searchRequest->num_databaseNames = 1;
2221 z_searchRequest->databaseNames = (char**)
2222 odr_malloc(m_s2z_odr_search, sizeof(char *));
2223 z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
2226 // query transformation
2227 Z_Query *query = (Z_Query *)
2228 odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
2229 z_searchRequest->query = query;
2231 if (srw_req->query_type == Z_SRW_query_type_cql)
2233 Z_External *ext = (Z_External *)
2234 odr_malloc(m_s2z_odr_search, sizeof(*ext));
2235 ext->direct_reference =
2236 odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
2237 ext->indirect_reference = 0;
2238 ext->descriptor = 0;
2239 ext->which = Z_External_CQL;
2240 ext->u.cql = srw_req->query.cql;
2242 query->which = Z_Query_type_104;
2243 query->u.type_104 = ext;
2245 else if (srw_req->query_type == Z_SRW_query_type_pqf)
2247 Z_RPNQuery *RPNquery;
2248 YAZ_PQF_Parser pqf_parser;
2250 pqf_parser = yaz_pqf_create ();
2252 RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
2253 srw_req->query.pqf);
2256 const char *pqf_msg;
2258 int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
2259 yaz_log(YLOG_LOG, "%*s^\n", off+4, "");
2260 yaz_log(YLOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
2262 send_to_srw_client_error(10, 0);
2265 query->which = Z_Query_type_1;
2266 query->u.type_1 = RPNquery;
2268 yaz_pqf_destroy (pqf_parser);
2272 send_to_srw_client_error(7, "query");
2277 m_s2z_present_apdu = 0;
2279 if (srw_req->maximumRecords)
2280 max = *srw_req->maximumRecords;
2282 if (srw_req->startRecord)
2283 start = *srw_req->startRecord;
2286 // Some backend, such as Voyager doesn't honor piggyback
2287 // So we use present always (0 &&).
2288 if (0 && start <= 1) // Z39.50 piggyback
2290 *z_searchRequest->smallSetUpperBound = max;
2291 *z_searchRequest->mediumSetPresentNumber = max;
2292 *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
2294 z_searchRequest->preferredRecordSyntax =
2295 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
2297 if (srw_req->recordSchema)
2299 z_searchRequest->smallSetElementSetNames =
2300 z_searchRequest->mediumSetElementSetNames =
2301 mk_esn_from_schema(m_s2z_odr_search,
2302 srw_req->recordSchema);
2305 else // Z39.50 present
2307 m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
2308 Z_APDU_presentRequest);
2309 Z_PresentRequest *z_presentRequest =
2310 m_s2z_present_apdu->u.presentRequest;
2311 *z_presentRequest->resultSetStartPoint = start;
2312 *z_presentRequest->numberOfRecordsRequested = max;
2313 z_presentRequest->preferredRecordSyntax =
2314 yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
2316 if (srw_req->recordSchema)
2318 z_presentRequest->recordComposition =
2319 (Z_RecordComposition *)
2320 odr_malloc(m_s2z_odr_search,
2321 sizeof(Z_RecordComposition));
2322 z_presentRequest->recordComposition->which =
2323 Z_RecordComp_simple;
2324 z_presentRequest->recordComposition->u.simple =
2325 mk_esn_from_schema(m_s2z_odr_search,
2326 srw_req->recordSchema);
2332 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
2333 Z_APDU_initRequest);
2335 // prevent m_initRequest_apdu memory from being grabbed
2336 // in Yaz_Proxy::handle_incoming_Z_PDU
2337 m_initRequest_apdu = m_s2z_init_apdu;
2338 handle_incoming_Z_PDU(m_s2z_init_apdu);
2343 handle_incoming_Z_PDU(m_s2z_search_apdu);
2347 else if (srw_pdu->which == Z_SRW_explain_request)
2349 Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
2351 const char *backend_db = srw_req->database;
2352 srw_get_client(srw_req->database, &backend_db);
2354 m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
2357 if (srw_req->stylesheet)
2359 odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
2361 if (srw_req->recordPacking &&
2362 !strcmp(srw_req->recordPacking, "xml"))
2363 m_s2z_packing = Z_SRW_recordPacking_XML;
2365 m_s2z_packing = Z_SRW_recordPacking_string;
2369 send_srw_explain_response(diagnostic, num_diagnostic);
2375 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
2376 Z_APDU_initRequest);
2378 // prevent m_initRequest_apdu memory from being grabbed
2379 // in Yaz_Proxy::handle_incoming_Z_PDU
2380 m_initRequest_apdu = m_s2z_init_apdu;
2381 handle_incoming_Z_PDU(m_s2z_init_apdu);
2384 send_srw_explain_response(0, 0);
2387 else if (srw_pdu->which == Z_SRW_scan_request)
2389 m_s2z_database = odr_strdup(m_s2z_odr_init,
2390 srw_pdu->u.scan_request->database);
2392 yaz_add_srw_diagnostic(odr_decode(),
2393 &diagnostic, &num_diagnostic,
2395 Z_SRW_PDU *srw_pdu =
2396 yaz_srw_get(odr_encode(),
2397 Z_SRW_scan_response);
2398 Z_SRW_scanResponse *srw_res = srw_pdu->u.scan_response;
2400 srw_res->diagnostics = diagnostic;
2401 srw_res->num_diagnostics = num_diagnostic;
2402 send_srw_response(srw_pdu);
2409 send_to_srw_client_error(4, 0);
2412 send_http_response(400);
2415 void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
2417 Z_ReferenceId **refid = get_referenceIdP(apdu);
2418 nmem_reset(m_referenceId_mem);
2419 if (refid && *refid)
2421 m_referenceId = (Z_ReferenceId *)
2422 nmem_malloc(m_referenceId_mem, sizeof(*m_referenceId));
2423 m_referenceId->len = m_referenceId->size = (*refid)->len;
2424 m_referenceId->buf = (unsigned char *)
2425 nmem_malloc(m_referenceId_mem, (*refid)->len);
2426 memcpy(m_referenceId->buf, (*refid)->buf, (*refid)->len);
2431 if (!m_client && m_invalid_session)
2433 m_apdu_invalid_session = apdu;
2434 m_mem_invalid_session = odr_extract_mem(odr_decode());
2435 apdu = m_initRequest_apdu;
2438 // Determine our client.
2439 Z_OtherInformation **oi;
2440 get_otherInfoAPDU(apdu, &oi);
2441 m_client = get_client(apdu, get_cookie(oi), get_proxy(oi));
2446 send_http_response(404);
2456 m_client->m_server = this;
2458 if (apdu->which == Z_APDU_initRequest)
2460 if (apdu->u.initRequest->implementationId)
2461 yaz_log(YLOG_LOG, "%simplementationId: %s",
2462 m_session_str, apdu->u.initRequest->implementationId);
2463 if (apdu->u.initRequest->implementationName)
2464 yaz_log(YLOG_LOG, "%simplementationName: %s",
2465 m_session_str, apdu->u.initRequest->implementationName);
2466 if (apdu->u.initRequest->implementationVersion)
2467 yaz_log(YLOG_LOG, "%simplementationVersion: %s",
2468 m_session_str, apdu->u.initRequest->implementationVersion);
2469 if (m_initRequest_apdu == 0)
2471 if (m_initRequest_mem)
2472 nmem_destroy(m_initRequest_mem);
2474 m_initRequest_apdu = apdu;
2475 m_initRequest_mem = odr_extract_mem(odr_decode());
2477 m_initRequest_preferredMessageSize = *apdu->u.initRequest->
2478 preferredMessageSize;
2479 *apdu->u.initRequest->preferredMessageSize = 1024*1024;
2480 m_initRequest_maximumRecordSize = *apdu->u.initRequest->
2482 *apdu->u.initRequest->maximumRecordSize = 1024*1024;
2484 // Save proposal charsets and langs.
2485 if (ODR_MASK_GET(apdu->u.initRequest->options,
2486 Z_Options_negotiationModel))
2488 Z_CharSetandLanguageNegotiation *charSetandLangRecord =
2489 yaz_get_charneg_record(*oi);
2491 yaz_get_proposal_charneg(m_referenceId_mem,
2492 charSetandLangRecord,
2493 &m_initRequest_oi_negotiation_charsets,
2494 &m_initRequest_oi_negotiation_num_charsets,
2495 &m_initRequest_oi_negotiation_langs,
2496 &m_initRequest_oi_negotiation_num_langs,
2497 &m_initRequest_oi_negotiation_selected);
2499 for (int i=0; i<m_initRequest_oi_negotiation_num_charsets; i++)
2501 yaz_log(YLOG_LOG, "%scharacters set proposal: %s",
2502 m_session_str,(m_initRequest_oi_negotiation_charsets[i])?
2503 m_initRequest_oi_negotiation_charsets[i]:"none");
2505 for (int i=0; i<m_initRequest_oi_negotiation_num_langs; i++)
2507 yaz_log(YLOG_LOG, "%slanguages proposal: %s",
2508 m_session_str, (m_initRequest_oi_negotiation_langs[i])?
2509 m_initRequest_oi_negotiation_langs[i]:"none");
2511 yaz_log(YLOG_LOG, "%sselected proposal: %d (boolean)",
2512 m_session_str, m_initRequest_oi_negotiation_selected);
2514 // save init options for the response..
2515 m_initRequest_options = apdu->u.initRequest->options;
2517 apdu->u.initRequest->options =
2518 (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
2519 sizeof(Odr_bitmask));
2520 ODR_MASK_ZERO(apdu->u.initRequest->options);
2522 for (i = 0; i<= 24; i++)
2523 ODR_MASK_SET(apdu->u.initRequest->options, i);
2524 // check negotiation option
2525 if (!ODR_MASK_GET(m_initRequest_options,
2526 Z_Options_negotiationModel))
2528 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2529 Z_Options_negotiationModel);
2531 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2532 Z_Options_concurrentOperations);
2534 m_initRequest_version = apdu->u.initRequest->protocolVersion;
2535 apdu->u.initRequest->protocolVersion =
2536 (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
2537 sizeof(Odr_bitmask));
2538 ODR_MASK_ZERO(apdu->u.initRequest->protocolVersion);
2540 for (i = 0; i<= 8; i++)
2541 ODR_MASK_SET(apdu->u.initRequest->protocolVersion, i);
2543 if (m_client->m_init_flag)
2545 if (handle_init_response_for_invalid_session(apdu))
2547 if (m_client->m_initResponse)
2549 Z_APDU *apdu2 = m_client->m_initResponse;
2550 apdu2->u.initResponse->otherInfo = 0;
2551 if (m_client->m_cookie && *m_client->m_cookie)
2552 set_otherInformationString(apdu2, VAL_COOKIE, 1,
2553 m_client->m_cookie);
2554 apdu2->u.initResponse->referenceId =
2555 apdu->u.initRequest->referenceId;
2556 apdu2->u.initResponse->options = m_client->m_initResponse_options;
2557 apdu2->u.initResponse->protocolVersion =
2558 m_client->m_initResponse_version;
2560 send_to_client(apdu2);
2564 m_client->m_init_flag = 1;
2566 handle_max_record_retrieve(apdu);
2569 apdu = handle_syntax_validation(apdu);
2572 apdu = handle_query_transformation(apdu);
2575 apdu = handle_query_validation(apdu);
2578 apdu = result_set_optimize(apdu);
2581 m_client->timeout(m_target_idletime); // mark it active even
2582 // though we didn't use it
2585 // Add otherInformation entry in APDU if
2586 // negotiatoin in use.
2588 handle_charset_lang_negotiation(apdu);
2590 // delete other info construct completely if 0 elements
2591 get_otherInfoAPDU(apdu, &oi);
2592 if (oi && *oi && (*oi)->num_elements == 0)
2595 if (apdu->which == Z_APDU_presentRequest &&
2596 m_client->m_resultSetStartPoint == 0)
2598 Z_PresentRequest *pr = apdu->u.presentRequest;
2599 m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
2600 m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
2602 m_client->m_resultSetStartPoint = 0;
2604 if (m_client->send_to_target(apdu) < 0)
2611 m_client->m_waiting = 1;
2614 void Yaz_Proxy::connectNotify()
2618 void Yaz_Proxy::releaseClient()
2620 xfree(m_proxyTarget);
2622 m_invalid_session = 0;
2623 // only keep if keep_alive flag is set...
2625 m_client->m_pdu_recv < m_keepalive_limit_pdu &&
2626 m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
2627 m_client->m_waiting == 0)
2629 yaz_log(YLOG_LOG, "%sShutdown (client to proxy) keepalive %s",
2631 m_client->get_hostname());
2632 yaz_log(YLOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
2633 m_session_str, m_client->m_pdu_recv,
2634 m_client->m_bytes_sent + m_client->m_bytes_recv,
2635 m_keepalive_limit_bw, m_keepalive_limit_pdu);
2636 assert (m_client->m_waiting != 2);
2637 // Tell client (if any) that no server connection is there..
2638 m_client->m_server = 0;
2643 yaz_log (YLOG_LOG, "%sShutdown (client to proxy) close %s",
2645 m_client->get_hostname());
2646 assert (m_client->m_waiting != 2);
2652 yaz_log (YLOG_LOG, "%sshutdown (client to proxy) bad state",
2658 yaz_log (YLOG_LOG, "%sShutdown (client to proxy)",
2662 m_parent->pre_init();
2665 void Yaz_Proxy::shutdown()
2671 const char *Yaz_ProxyClient::get_session_str()
2675 return m_server->get_session_str();
2678 void Yaz_ProxyClient::shutdown()
2680 yaz_log (YLOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
2686 void Yaz_Proxy::failNotify()
2689 yaz_log (YLOG_LOG, "%sConnection closed by client",
2694 void Yaz_ProxyClient::failNotify()
2697 m_server->inc_request_no();
2698 yaz_log (YLOG_LOG, "%sConnection closed by target %s",
2699 get_session_str(), get_hostname());
2703 void Yaz_ProxyClient::connectNotify()
2705 const char *s = get_session_str();
2706 const char *h = get_hostname();
2707 yaz_log (YLOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
2709 timeout(m_target_idletime);
2714 IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
2715 *the_PDU_Observable, int fd)
2717 return new Yaz_ProxyClient(the_PDU_Observable, 0);
2720 Yaz_ProxyClient::~Yaz_ProxyClient()
2725 m_next->m_prev = m_prev;
2726 m_waiting = 2; // for debugging purposes only.
2727 odr_destroy(m_init_odr);
2728 delete m_last_query;
2729 xfree (m_last_resultSetId);
2733 void Yaz_ProxyClient::pre_init_client()
2735 Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
2736 Z_InitRequest *req = apdu->u.initRequest;
2739 for (i = 0; i<= 24; i++)
2740 ODR_MASK_SET(req->options, i);
2741 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2742 Z_Options_negotiationModel);
2743 ODR_MASK_CLEAR(apdu->u.initRequest->options,
2744 Z_Options_concurrentOperations);
2745 for (i = 0; i<= 10; i++)
2746 ODR_MASK_SET(req->protocolVersion, i);
2748 if (send_to_target(apdu) < 0)
2759 void Yaz_Proxy::pre_init()
2762 const char *name = 0;
2763 const char *zurl_in_use[MAX_ZURL_PLEX];
2764 int limit_bw, limit_pdu, limit_req;
2765 int target_idletime, client_idletime;
2767 int keepalive_limit_bw, keepalive_limit_pdu;
2769 const char *cql2rpn = 0;
2770 const char *authentication = 0;
2771 const char *negotiation_charset = 0;
2772 const char *negotiation_lang = 0;
2774 Yaz_ProxyConfig *cfg = check_reconfigure();
2778 if (m_log_mask & PROXY_LOG_APDU_CLIENT)
2783 for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
2784 &limit_bw, &limit_pdu, &limit_req,
2785 &target_idletime, &client_idletime,
2787 &keepalive_limit_bw,
2788 &keepalive_limit_pdu,
2792 &negotiation_charset,
2793 &negotiation_lang) ; i++)
2798 for (j = 0; zurl_in_use[j]; j++)
2802 int spare_waiting = 0;
2805 for (c = m_clientPool; c; c = c->m_next)
2807 if (!strcmp(zurl_in_use[j], c->get_hostname()))
2809 if (c->m_cookie == 0)
2811 if (c->m_server == 0)
2823 yaz_log(YLOG_LOG, "%spre-init %s %s use=%d other=%d spare=%d "
2824 "sparew=%d preinit=%d",m_session_str,
2825 name, zurl_in_use[j], in_use, other,
2826 spare, spare_waiting, pre_init);
2827 if (spare + spare_waiting < pre_init)
2829 c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
2830 c->m_next = m_clientPool;
2832 c->m_next->m_prev = &c->m_next;
2834 c->m_prev = &m_clientPool;
2836 if (m_log_mask & PROXY_LOG_APDU_SERVER)
2837 c->set_APDU_yazlog(1);
2839 c->set_APDU_yazlog(0);
2841 if (c->client(zurl_in_use[j]))
2849 c->m_target_idletime = target_idletime;
2850 c->m_seqno = m_seqno++;
2857 void Yaz_Proxy::timeoutNotify()
2863 timeout(m_client_idletime);
2864 Z_GDU *apdu = m_bw_hold_PDU;
2867 if (apdu->which == Z_GDU_Z3950)
2868 handle_incoming_Z_PDU(apdu->u.z3950);
2869 else if (apdu->which == Z_GDU_HTTP_Request)
2870 handle_incoming_HTTP(apdu->u.HTTP_Request);
2872 else if (m_stylesheet_nprl)
2873 convert_xsl_delay();
2878 yaz_log (YLOG_LOG, "%sTimeout (client to proxy)", m_session_str);
2889 void Yaz_Proxy::markInvalid()
2892 m_invalid_session = 1;
2895 void Yaz_ProxyClient::timeoutNotify()
2898 m_server->inc_request_no();
2900 yaz_log (YLOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
2904 if (m_server && m_init_flag)
2906 // target timed out in a session that was properly initialized
2907 // server object stay alive but we mark it as invalid so it
2908 // gets initialized again
2909 m_server->markInvalid();
2915 Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
2916 Yaz_Proxy *parent) :
2917 Yaz_Z_Assoc (the_PDU_Observable)
2924 m_last_resultSetId = 0;
2925 m_last_resultCount = 0;
2929 m_init_odr = odr_createmem (ODR_DECODE);
2931 m_initResponse_options = 0;
2932 m_initResponse_version = 0;
2933 m_initResponse_preferredMessageSize = 0;
2934 m_initResponse_maximumRecordSize = 0;
2935 m_resultSetStartPoint = 0;
2936 m_bytes_sent = m_bytes_recv = 0;
2940 m_target_idletime = 600;
2944 const char *Yaz_Proxy::option(const char *name, const char *value)
2946 if (!strcmp (name, "optimize")) {
2949 m_optimize = xstrdup (value);
2956 void Yaz_ProxyClient::recv_HTTP_response(Z_HTTP_Response *apdu, int len)
2961 void Yaz_ProxyClient::recv_GDU(Z_GDU *apdu, int len)
2963 if (apdu->which == Z_GDU_Z3950)
2964 recv_Z_PDU(apdu->u.z3950, len);
2965 else if (apdu->which == Z_GDU_HTTP_Response)
2966 recv_HTTP_response(apdu->u.HTTP_Response, len);
2971 int Yaz_Proxy::handle_init_response_for_invalid_session(Z_APDU *apdu)
2973 if (!m_invalid_session)
2975 m_invalid_session = 0;
2976 handle_incoming_Z_PDU(m_apdu_invalid_session);
2977 assert (m_mem_invalid_session);
2978 nmem_destroy(m_mem_invalid_session);
2979 m_mem_invalid_session = 0;
2983 void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
2985 m_bytes_recv += len;
2989 if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
2990 yaz_log (YLOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
2991 apdu_name(apdu), get_hostname(), len);
2992 if (apdu->which == Z_APDU_initResponse)
2994 if (!m_server) // if this is a pre init session , check for more
2996 NMEM nmem = odr_extract_mem (odr_decode());
2997 odr_reset (m_init_odr);
2998 nmem_transfer (m_init_odr->mem, nmem);
2999 m_initResponse = apdu;
3000 m_initResponse_options = apdu->u.initResponse->options;
3001 m_initResponse_version = apdu->u.initResponse->protocolVersion;
3002 m_initResponse_preferredMessageSize =
3003 *apdu->u.initResponse->preferredMessageSize;
3004 m_initResponse_maximumRecordSize =
3005 *apdu->u.initResponse->maximumRecordSize;
3007 Z_InitResponse *ir = apdu->u.initResponse;
3008 char *im0 = ir->implementationName;
3011 odr_malloc(m_init_odr, 20 + (im0 ? strlen(im0) : 0));
3018 strcat(im1, "(YAZ Proxy)");
3019 ir->implementationName = im1;
3021 nmem_destroy (nmem);
3023 if (m_server && m_server->handle_init_response_for_invalid_session(apdu))
3026 if (apdu->which == Z_APDU_searchResponse)
3028 Z_SearchResponse *sr = apdu->u.searchResponse;
3029 m_last_resultCount = *sr->resultCount;
3030 int status = *sr->searchStatus;
3031 if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
3035 if (sr->records && sr->records->which == Z_Records_DBOSD)
3037 m_cache.add(odr_decode(),
3038 sr->records->u.databaseOrSurDiagnostics, 1,
3043 if (apdu->which == Z_APDU_presentResponse)
3045 Z_PresentResponse *pr = apdu->u.presentResponse;
3049 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
3050 Z_SearchResponse *sr = new_apdu->u.searchResponse;
3051 sr->referenceId = pr->referenceId;
3052 *sr->resultCount = m_last_resultCount;
3053 sr->records = pr->records;
3054 sr->nextResultSetPosition = pr->nextResultSetPosition;
3055 sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
3059 pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
3061 m_cache.add(odr_decode(),
3062 pr->records->u.databaseOrSurDiagnostics,
3063 m_resultSetStartPoint, -1);
3064 m_resultSetStartPoint = 0;
3068 set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
3071 m_server->send_to_client(apdu);
3073 if (apdu->which == Z_APDU_close)
3079 void Yaz_Proxy::low_socket_close()
3084 for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
3085 if (m_lo_fd[i] >= 0)
3086 ::close(m_lo_fd[i]);
3090 void Yaz_Proxy::low_socket_open()
3095 for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
3096 m_lo_fd[i] = open("/dev/null", O_RDONLY);
3100 int Yaz_Proxy::server(const char *addr)
3102 int r = Yaz_Z_Assoc::server(addr);
3105 yaz_log(YLOG_LOG, "%sStarted proxy "
3109 " on %s", m_session_str, addr);