1 /* $Id: filter_sru_to_z3950.cpp,v 1.20 2006-10-03 07:57:40 marc Exp $
2 Copyright (c) 2005-2006, Index Data.
4 See the LICENSE file for details
11 #include "gduutil.hpp"
12 #include "sru_util.hpp"
13 #include "filter_sru_to_z3950.hpp"
16 #include <yaz/z-core.h>
18 #include <yaz/pquery.h>
20 #include <boost/thread/mutex.hpp>
27 namespace mp = metaproxy_1;
28 namespace mp_util = metaproxy_1::util;
29 namespace yf = mp::filter;
32 namespace metaproxy_1 {
34 class SRUtoZ3950::Impl {
36 void configure(const xmlNode *xmlnode);
37 void process(metaproxy_1::Package &package) const;
39 union SRW_query {char * cql; char * xcql; char * pqf;};
40 typedef const int& SRW_query_type;
42 //std::string sru_protocol(const Z_HTTP_Request &http_req) const;
43 std::string debug_http(const Z_HTTP_Request &http_req) const;
44 //void http_response(mp::Package &package,
45 // const std::string &content,
46 // int http_code = 200) const;
47 bool build_sru_debug_package(mp::Package &package) const;
48 bool build_simple_explain(mp::Package &package,
50 Z_SRW_PDU *sru_pdu_res,
51 Z_SRW_explainRequest const *er_req)
53 bool build_sru_response(mp::Package &package,
56 const Z_SRW_PDU *sru_pdu_res,
58 const char *stylesheet) const;
59 Z_SRW_PDU * decode_sru_request(mp::Package &package,
62 Z_SRW_PDU *sru_pdu_res,
65 char *stylesheet) const;
66 bool check_sru_query_exists(mp::Package &package,
68 Z_SRW_PDU *sru_pdu_res,
69 Z_SRW_searchRetrieveRequest
71 bool z3950_build_query(mp::odr &odr_en, Z_Query *z_query,
72 const SRW_query &query,
73 SRW_query_type query_type) const;
74 bool z3950_init_request(mp::Package &package,
76 &database = "Default") const;
77 bool z3950_close_request(mp::Package &package) const;
78 bool z3950_search_request(mp::Package &package,
80 Z_SRW_PDU *sru_pdu_res,
81 Z_SRW_searchRetrieveRequest
83 bool z3950_present_request(mp::Package &package,
85 Z_SRW_PDU *sru_pdu_res,
86 Z_SRW_searchRetrieveRequest
88 bool z3950_scan_request(mp::Package &package,
90 Z_SRW_PDU *sru_pdu_res,
93 Z_ElementSetNames * build_esn_from_schema(mp::odr &odr_en,
96 int z3950_to_srw_diag(mp::odr &odr_en,
97 Z_SRW_searchRetrieveResponse *srw_res,
98 Z_DefaultDiagFormat *ddf) const;
103 yf::SRUtoZ3950::SRUtoZ3950() : m_p(new Impl)
107 yf::SRUtoZ3950::~SRUtoZ3950()
108 { // must have a destructor because of boost::scoped_ptr
111 void yf::SRUtoZ3950::configure(const xmlNode *xmlnode)
113 m_p->configure(xmlnode);
116 void yf::SRUtoZ3950::process(mp::Package &package) const
118 m_p->process(package);
121 void yf::SRUtoZ3950::Impl::configure(const xmlNode *xmlnode)
125 void yf::SRUtoZ3950::Impl::process(mp::Package &package) const
127 Z_GDU *zgdu_req = package.request().get();
129 // ignoring all non HTTP_Request packages
130 if (!zgdu_req || !(zgdu_req->which == Z_GDU_HTTP_Request)){
135 // only working on HTTP_Request packages now
138 // TODO: Z3950 response parsing and translation to SRU package
141 mp::odr odr_de(ODR_DECODE);
142 Z_SRW_PDU *sru_pdu_req = 0;
144 mp::odr odr_en(ODR_ENCODE);
145 //Z_SRW_PDU *sru_pdu_res = 0;
146 Z_SRW_PDU *sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
150 char *stylesheet = 0;
152 if (! (sru_pdu_req = decode_sru_request(package, odr_de, odr_en,
154 charset, stylesheet)))
156 build_simple_explain(package, odr_en, sru_pdu_res, 0);
157 build_sru_response(package, odr_en, soap,
158 sru_pdu_res, charset, stylesheet);
159 package.session().close();
164 // SRU request package translation to Z3950 package
166 std::cout << *sru_pdu_req << "\n";
168 std::cout << "SRU empty\n";
172 if (sru_pdu_req && sru_pdu_req->which == Z_SRW_explain_request)
174 Z_SRW_explainRequest *er_req = sru_pdu_req->u.explain_request;
175 //sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
177 build_simple_explain(package, odr_en, sru_pdu_res, er_req);
182 && sru_pdu_req->which == Z_SRW_searchRetrieve_request
183 && sru_pdu_req->u.request)
185 Z_SRW_searchRetrieveRequest *sr_req = sru_pdu_req->u.request;
187 sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_searchRetrieve_response);
189 // checking that we have a query
190 ok = check_sru_query_exists(package, odr_en, sru_pdu_res, sr_req);
192 if (ok && z3950_init_request(package))
195 ok = z3950_search_request(package, odr_en,
196 sru_pdu_res, sr_req);
199 && sru_pdu_res->u.response->numberOfRecords
200 && *(sru_pdu_res->u.response->numberOfRecords)
201 && sr_req->maximumRecords
202 && *(sr_req->maximumRecords))
204 ok = z3950_present_request(package, odr_en,
207 z3950_close_request(package);
214 && sru_pdu_req->which == Z_SRW_scan_request
215 && sru_pdu_req->u.scan_request)
217 Z_SRW_scanRequest *sr_req = sru_pdu_req->u.scan_request;
219 sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_scan_response);
221 if (z3950_init_request(package))
223 z3950_scan_request(package, odr_en, sru_pdu_res, sr_req);
224 z3950_close_request(package);
229 std::cout << "SRU OPERATION NOT SUPPORTED \n";
230 sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
232 // TODO: make nice diagnostic return package
233 package.session().close();
237 //build_sru_debug_package(package);
238 build_sru_response(package, odr_en, soap,
239 sru_pdu_res, charset, stylesheet);
244 bool yf::SRUtoZ3950::Impl::build_simple_explain(mp::Package &package,
246 Z_SRW_PDU *sru_pdu_res,
250 // z3950'fy recordPacking
251 int record_packing = Z_SRW_recordPacking_XML;
252 if (er_req && er_req->recordPacking && 's' == *(er_req->recordPacking))
253 record_packing = Z_SRW_recordPacking_string;
255 // getting database info
256 std::string database("Default");
257 if (er_req && er_req->database)
258 database = er_req->database;
260 // getting host and port info
261 std::string host = package.origin().listen_host();
262 std::string port = mp_util::to_string(package.origin().listen_port());
264 // overwriting host and port info if set from HTTP Host header
265 Z_GDU *zgdu_req = package.request().get();
266 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
268 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
271 std::string http_host_address
272 = mp_util::http_header_value(http_req->headers, "Host");
274 std::string::size_type i = http_host_address.rfind(":");
275 if (i != std::string::npos)
277 host.assign(http_host_address, 0, i);
278 port.assign(http_host_address, i + 1, std::string::npos);
283 // building SRU explain record
284 std::string explain_xml
285 = mp_util::to_string(
287 " <serverInfo protocol='SRU'>\n"
290 + mp_util::to_string("</host>\n"
293 + mp_util::to_string("</port>\n"
296 + mp_util::to_string("</database>\n"
301 // preparing explain record insert
302 Z_SRW_explainResponse *sru_res = sru_pdu_res->u.explain_response;
304 // = (Z_SRW_record *) odr_malloc(odr_en, sizeof(Z_SRW_record));
306 // inserting one and only explain record
308 sru_res->record.recordPosition = odr_intdup(odr_en, 1);
309 sru_res->record.recordPacking = record_packing;
310 sru_res->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
311 sru_res->record.recordData_len = 1 + explain_xml.size();
312 sru_res->record.recordData_buf
313 = odr_strdupn(odr_en, (const char *)explain_xml.c_str(),
314 1 + explain_xml.size());
320 bool yf::SRUtoZ3950::Impl::build_sru_debug_package(mp::Package &package) const
322 Z_GDU *zgdu_req = package.request().get();
323 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
325 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
326 std::string content = mp_util::http_headers_debug(*http_req);
328 mp_util::http_response(package, content, http_code);
331 package.session().close();
336 bool yf::SRUtoZ3950::Impl::build_sru_response(mp::Package &package,
339 const Z_SRW_PDU *sru_pdu_res,
341 const char *stylesheet)
345 // SRU request package translation to Z3950 package
347 std::cout << *(const_cast<Z_SRW_PDU *>(sru_pdu_res)) << "\n";
349 std::cout << "SRU empty\n";
352 Z_GDU *zgdu_req = package.request().get();
353 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
355 Z_GDU *zgdu_res //= z_get_HTTP_Response(odr_en, 200);
356 = odr_en.create_HTTP_Response(package.session(),
357 zgdu_req->u.HTTP_Request,
360 // adding HTTP response code and headers
361 Z_HTTP_Response * http_res = zgdu_res->u.HTTP_Response;
362 //http_res->code = http_code;
364 std::string ctype("text/xml");
366 ctype += "; charset=";
370 z_HTTP_header_add(odr_en,
371 &http_res->headers, "Content-Type", ctype.c_str());
373 // packaging Z_SOAP into HTML response
374 static Z_SOAP_Handler soap_handlers[4] = {
375 {"http://www.loc.gov/zing/srw/", 0,
376 (Z_SOAP_fun) yaz_srw_codec},
377 {"http://www.loc.gov/zing/srw/v1.0/", 0,
378 (Z_SOAP_fun) yaz_srw_codec},
379 {"http://www.loc.gov/zing/srw/update/", 0,
380 (Z_SOAP_fun) yaz_ucp_codec},
385 // empty stylesheet means NO stylesheet
386 if (stylesheet && *stylesheet == '\0')
389 // encoding SRU package
391 soap->u.generic->p = (void*) sru_pdu_res;
393 z_soap_codec_enc_xsl(odr_en, &soap,
394 &http_res->content_buf, &http_res->content_len,
395 soap_handlers, charset, stylesheet);
398 package.response() = zgdu_res;
401 package.session().close();
407 Z_SRW_PDU * yf::SRUtoZ3950::Impl::decode_sru_request(mp::Package &package,
410 Z_SRW_PDU *sru_pdu_res,
416 Z_GDU *zgdu_req = package.request().get();
417 Z_SRW_PDU *sru_pdu_req = 0;
419 assert((zgdu_req->which == Z_GDU_HTTP_Request));
421 //ignoring all non HTTP_Request packages
422 //if (!zgdu_req || !(zgdu_req->which == Z_GDU_HTTP_Request)){
426 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
430 //Z_SRW_PDU *sru_pdu_res_exp = yaz_srw_get(odr_en, Z_SRW_explain_response);
432 if (0 == yaz_sru_decode(http_req, &sru_pdu_req, &soap,
434 &(sru_pdu_res->u.response->diagnostics),
435 &(sru_pdu_res->u.response->num_diagnostics)))
437 if (sru_pdu_res->u.response->num_diagnostics)
439 //sru_pdu_res = sru_pdu_res_exp;
440 package.session().close();
445 else if (0 == yaz_srw_decode(http_req, &sru_pdu_req, &soap,
450 //sru_pdu_res = sru_pdu_res_exp;
451 package.session().close();
458 yf::SRUtoZ3950::Impl::check_sru_query_exists(mp::Package &package,
460 Z_SRW_PDU *sru_pdu_res,
461 Z_SRW_searchRetrieveRequest
465 if( (sr_req->query_type == Z_SRW_query_type_cql && !sr_req->query.cql) )
467 yaz_add_srw_diagnostic(odr_en,
468 &(sru_pdu_res->u.response->diagnostics),
469 &(sru_pdu_res->u.response->num_diagnostics),
471 yaz_add_srw_diagnostic(odr_en,
472 &(sru_pdu_res->u.response->diagnostics),
473 &(sru_pdu_res->u.response->num_diagnostics),
474 10, "CQL query is empty");
477 if( (sr_req->query_type == Z_SRW_query_type_xcql && !sr_req->query.xcql) )
479 yaz_add_srw_diagnostic(odr_en,
480 &(sru_pdu_res->u.response->diagnostics),
481 &(sru_pdu_res->u.response->num_diagnostics),
482 10, "XCQL query is empty");
485 if( (sr_req->query_type == Z_SRW_query_type_pqf && !sr_req->query.pqf) )
487 yaz_add_srw_diagnostic(odr_en,
488 &(sru_pdu_res->u.response->diagnostics),
489 &(sru_pdu_res->u.response->num_diagnostics),
490 10, "PQF query is empty");
499 yf::SRUtoZ3950::Impl::z3950_init_request(mp::Package &package,
500 const std::string &database) const
502 // prepare Z3950 package
504 //Package z3950_package(s, package.origin());
505 Package z3950_package(package.session(), package.origin());
506 z3950_package.copy_filter(package);
508 // set initRequest APDU
509 mp::odr odr_en(ODR_ENCODE);
510 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_initRequest);
511 Z_InitRequest *init_req = apdu->u.initRequest;
512 //TODO: add user name in apdu
513 //TODO: add user passwd in apdu
514 //init_req->idAuthentication = org_init->idAuthentication;
515 //init_req->implementationId = "IDxyz";
516 //init_req->implementationName = "NAMExyz";
517 //init_req->implementationVersion = "VERSIONxyz";
519 ODR_MASK_SET(init_req->options, Z_Options_search);
520 ODR_MASK_SET(init_req->options, Z_Options_present);
521 ODR_MASK_SET(init_req->options, Z_Options_namedResultSets);
522 ODR_MASK_SET(init_req->options, Z_Options_scan);
524 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_1);
525 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_2);
526 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_3);
528 z3950_package.request() = apdu;
530 // send Z3950 package
531 // std::cout << "z3950_init_request " << *apdu <<"\n";
532 z3950_package.move();
534 // dead Z3950 backend detection
535 if (z3950_package.session().is_closed()){
536 package.session().close();
540 // check successful initResponse
541 Z_GDU *z3950_gdu = z3950_package.response().get();
543 if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
544 && z3950_gdu->u.z3950->which == Z_APDU_initResponse)
551 yf::SRUtoZ3950::Impl::z3950_close_request(mp::Package &package) const
554 package.session().close();
556 // prepare and close Z3950 package
557 Package z3950_package(package.session(), package.origin());
558 z3950_package.copy_filter(package);
559 z3950_package.session().close();
562 //mp::odr odr_en(ODR_ENCODE);
563 //Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_close);
564 //z3950_package.request() = apdu;
566 z3950_package.move();
568 // check successful close response
569 //Z_GDU *z3950_gdu = z3950_package.response().get();
570 //if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
571 // && z3950_gdu->u.z3950->which == Z_APDU_close)
574 if (z3950_package.session().is_closed()){
581 yf::SRUtoZ3950::Impl::z3950_search_request(mp::Package &package,
583 Z_SRW_PDU *sru_pdu_res,
584 Z_SRW_searchRetrieveRequest
587 Package z3950_package(package.session(), package.origin());
588 z3950_package.copy_filter(package);
590 //add stuff in z3950 apdu
591 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_searchRequest);
592 Z_SearchRequest *z_searchRequest = apdu->u.searchRequest;
595 z_searchRequest->num_databaseNames = 1;
596 z_searchRequest->databaseNames = (char**)
597 odr_malloc(odr_en, sizeof(char *));
599 if (sr_req->database)
600 z_searchRequest->databaseNames[0]
601 = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
603 z_searchRequest->databaseNames[0]
604 = odr_strdup(odr_en, "Default");
608 Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
609 z_searchRequest->query = z_query;
611 if (!z3950_build_query(odr_en, z_query,
612 (const SRW_query&)sr_req->query,
615 yaz_add_srw_diagnostic(odr_en,
616 &(sru_pdu_res->u.response->diagnostics),
617 &(sru_pdu_res->u.response->num_diagnostics),
622 z3950_package.request() = apdu;
623 //std::cout << "z3950_search_request " << *apdu << "\n";
625 z3950_package.move();
628 Z_GDU *z3950_gdu = z3950_package.response().get();
629 //std::cout << "z3950_search_request " << *z3950_gdu << "\n";
631 //TODO: check success condition
633 //int yaz_diag_bib1_to_srw (int bib1_code);
634 //int yaz_diag_srw_to_bib1(int srw_code);
635 //Se kode i src/seshigh.c (srw_bend_search, srw_bend_init).
637 if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
638 && z3950_gdu->u.z3950->which == Z_APDU_searchResponse
639 && z3950_gdu->u.z3950->u.searchResponse->searchStatus)
642 Z_SearchResponse *sr = z3950_gdu->u.z3950->u.searchResponse;
645 // srw'fy number of records
646 sru_pdu_res->u.response->numberOfRecords
647 = (int *) odr_malloc(odr_en, sizeof(int *));
648 *(sru_pdu_res->u.response->numberOfRecords) = *(sr->resultCount);
650 // srw'fy nextRecordPosition
651 //sru_pdu_res->u.response->nextRecordPosition
652 // = (int *) odr_malloc(odr_en, sizeof(int *));
653 //*(sru_pdu_res->u.response->nextRecordPosition) = 1;
664 yf::SRUtoZ3950::Impl::z3950_present_request(mp::Package &package,
666 Z_SRW_PDU *sru_pdu_res,
667 Z_SRW_searchRetrieveRequest
676 // no need to work if nobody wants record ..
677 if (!(sr_req->maximumRecords) || 0 == *(sr_req->maximumRecords))
682 bool send_z3950_present = true;
684 // recordXPath unsupported.
685 if (sr_req->recordXPath)
687 send_z3950_present = false;
688 yaz_add_srw_diagnostic(odr_en,
689 &(sru_pdu_res->u.response->diagnostics),
690 &(sru_pdu_res->u.response->num_diagnostics),
691 72, "RecordXPath not supported");
694 // resultSetTTL unsupported.
695 // resultSetIdleTime in response
696 if (sr_req->resultSetTTL)
698 send_z3950_present = false;
699 yaz_add_srw_diagnostic(odr_en,
700 &(sru_pdu_res->u.response->diagnostics),
701 &(sru_pdu_res->u.response->num_diagnostics),
706 if (sr_req->sort_type != Z_SRW_sort_type_none)
708 send_z3950_present = false;
709 yaz_add_srw_diagnostic(odr_en,
710 &(sru_pdu_res->u.response->diagnostics),
711 &(sru_pdu_res->u.response->num_diagnostics),
715 // start record requested larger than number of records
716 if (sr_req->startRecord
717 && sru_pdu_res->u.response->numberOfRecords
718 && *(sr_req->startRecord)
719 > *(sru_pdu_res->u.response->numberOfRecords))
721 // = *(sr_req->startRecord);
722 send_z3950_present = false;
723 yaz_add_srw_diagnostic(odr_en,
724 &(sru_pdu_res->u.response->diagnostics),
725 &(sru_pdu_res->u.response->num_diagnostics),
729 // exit on all these above diagnostics
730 if (!send_z3950_present)
733 // now packaging the z3950 present request
734 Package z3950_package(package.session(), package.origin());
735 z3950_package.copy_filter(package);
736 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_presentRequest);
738 assert(apdu->u.presentRequest);
740 // z3950'fy start record position
741 if (sr_req->startRecord)
742 *(apdu->u.presentRequest->resultSetStartPoint)
743 = *(sr_req->startRecord);
745 *(apdu->u.presentRequest->resultSetStartPoint) = 1;
747 // z3950'fy number of records requested
748 // protect against requesting records out of range
749 if (sr_req->maximumRecords)
750 *(apdu->u.presentRequest->numberOfRecordsRequested)
751 = std::min(*(sr_req->maximumRecords),
752 *(sru_pdu_res->u.response->numberOfRecords)
753 - *(apdu->u.presentRequest->resultSetStartPoint)
756 // z3950'fy recordPacking
757 int record_packing = Z_SRW_recordPacking_XML;
758 if (sr_req->recordPacking && 's' == *(sr_req->recordPacking))
759 record_packing = Z_SRW_recordPacking_string;
761 // RecordSyntax will always be XML
762 (apdu->u.presentRequest->preferredRecordSyntax)
763 = yaz_oidval_to_z3950oid (odr_en, CLASS_RECSYN, VAL_TEXT_XML);
765 // z3950'fy record schema
766 if (sr_req->recordSchema)
768 apdu->u.presentRequest->recordComposition
769 = (Z_RecordComposition *)
770 odr_malloc(odr_en, sizeof(Z_RecordComposition));
771 apdu->u.presentRequest->recordComposition->which
772 = Z_RecordComp_simple;
773 apdu->u.presentRequest->recordComposition->u.simple
774 = build_esn_from_schema(odr_en,
775 (const char *) sr_req->recordSchema);
778 // z3950'fy time to live - flagged as diagnostics above
779 //if (sr_req->resultSetTTL)
781 // attaching Z3950 package to filter chain
782 z3950_package.request() = apdu;
784 //std::cout << "z3950_present_request " << *apdu << "\n";
785 z3950_package.move();
787 //check successful Z3950 present response
788 Z_GDU *z3950_gdu = z3950_package.response().get();
789 if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950
790 || z3950_gdu->u.z3950->which != Z_APDU_presentResponse
791 || !z3950_gdu->u.z3950->u.presentResponse)
794 yaz_add_srw_diagnostic(odr_en,
795 &(sru_pdu_res->u.response->diagnostics),
796 &(sru_pdu_res->u.response->num_diagnostics),
798 package.session().close();
803 // everything fine, continuing
804 //std::cout << "z3950_present_request OK\n";
806 Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
807 Z_SRW_searchRetrieveResponse *sru_res = sru_pdu_res->u.response;
809 // checking non surrogate dioagnostics in Z3950 present response package
811 && pr->records->which == Z_Records_NSD
812 && pr->records->u.nonSurrogateDiagnostic)
815 z3950_to_srw_diag(odr_en, sru_res,
816 pr->records->u.nonSurrogateDiagnostic);
820 // copy all records if existing
821 if (pr->records && pr->records->which == Z_Records_DBOSD)
823 // srw'fy number of returned records
825 = pr->records->u.databaseOrSurDiagnostics->num_records;
828 = (Z_SRW_record *) odr_malloc(odr_en,
830 * sizeof(Z_SRW_record));
832 // srw'fy nextRecordPosition
833 // protecting for inserting one behind the last z3950 record
834 if (pr->nextResultSetPosition
835 //&& *(pr->nextResultSetPosition) <= *(sr_req->maximumRecords)
836 && *(pr->nextResultSetPosition)
837 <= *(sru_pdu_res->u.response->numberOfRecords))
838 sru_res->nextRecordPosition
839 = odr_intdup(odr_en, *(pr->nextResultSetPosition));
841 // inserting all records
842 for (int i = 0; i < sru_res->num_records; i++)
844 Z_NamePlusRecord *npr
845 = pr->records->u.databaseOrSurDiagnostics->records[i];
847 sru_res->records[i].recordPosition
849 i + *(apdu->u.presentRequest->resultSetStartPoint));
851 sru_res->records[i].recordPacking = record_packing;
853 if (npr->which != Z_NamePlusRecord_databaseRecord)
855 sru_res->records[i].recordSchema = "diagnostic";
856 sru_res->records[i].recordData_buf = "67";
857 sru_res->records[i].recordData_len = 2;
861 Z_External *r = npr->u.databaseRecord;
862 oident *ent = oid_getentbyoid(r->direct_reference);
863 if (r->which == Z_External_octet
864 && ent->value == VAL_TEXT_XML)
866 sru_res->records[i].recordSchema = "dc";
867 sru_res->records[i].recordData_buf
868 = odr_strdupn(odr_en,
869 (const char *)r->u.octet_aligned->buf,
870 r->u.octet_aligned->len);
871 sru_res->records[i].recordData_len
872 = r->u.octet_aligned->len;
876 sru_res->records[i].recordSchema = "diagnostic";
877 sru_res->records[i].recordData_buf = "67";
878 sru_res->records[i].recordData_len = 2;
888 yf::SRUtoZ3950::Impl::z3950_scan_request(mp::Package &package,
890 Z_SRW_PDU *sru_pdu_res,
891 Z_SRW_scanRequest const *sr_req) const
893 Package z3950_package(package.session(), package.origin());
894 z3950_package.copy_filter(package);
895 //mp::odr odr_en(ODR_ENCODE);
896 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_scanRequest);
898 //TODO: add stuff in apdu
899 Z_ScanRequest *z_scanRequest = apdu->u.scanRequest;
901 // database repackaging
902 z_scanRequest->num_databaseNames = 1;
903 z_scanRequest->databaseNames = (char**)
904 odr_malloc(odr_en, sizeof(char *));
905 if (sr_req->database)
906 z_scanRequest->databaseNames[0]
907 = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
909 z_scanRequest->databaseNames[0]
910 = odr_strdup(odr_en, "Default");
914 // CQL or XCQL scan is not possible in Z3950, flagging a diagnostic
915 if (sr_req->query_type != Z_SRW_query_type_pqf)
917 //send_to_srw_client_error(7, "query");
921 // PQF query repackaging
922 // need to use Z_AttributesPlusTerm structure, not Z_Query
923 // this can be digget out of a
924 // Z_query->type1(Z_RPNQuery)->RPNStructure(Z_RPNStructure)
925 // ->u.simple(Z_Operand)->u.attributesPlusTerm(Z_AttributesPlusTerm )
927 //Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
928 //z_searchRequest->query = z_query;
930 //if (!z3950_build_query(odr_en, z_query,
931 // (const SRW_query&)sr_req->query,
932 // sr_req->query_type))
934 //send_to_srw_client_error(7, "query");
940 z3950_package.request() = apdu;
941 std::cout << "z3950_scan_request " << *apdu << "\n";
943 z3950_package.move();
944 //TODO: check success condition
949 bool yf::SRUtoZ3950::Impl::z3950_build_query(mp::odr &odr_en, Z_Query *z_query,
950 const SRW_query &query,
951 SRW_query_type query_type) const
953 if (query_type == Z_SRW_query_type_cql)
955 Z_External *ext = (Z_External *)
956 odr_malloc(odr_en, sizeof(*ext));
957 ext->direct_reference =
958 odr_getoidbystr(odr_en, "1.2.840.10003.16.2");
959 ext->indirect_reference = 0;
961 ext->which = Z_External_CQL;
962 ext->u.cql = const_cast<char *>(query.cql);
964 z_query->which = Z_Query_type_104;
965 z_query->u.type_104 = ext;
969 if (query_type == Z_SRW_query_type_pqf)
971 Z_RPNQuery *RPNquery;
972 YAZ_PQF_Parser pqf_parser;
974 pqf_parser = yaz_pqf_create ();
976 RPNquery = yaz_pqf_parse (pqf_parser, odr_en, query.pqf);
979 std::cout << "TODO: Handeling of bad PQF\n";
980 std::cout << "TODO: Diagnostic to be send\n";
982 z_query->which = Z_Query_type_1;
983 z_query->u.type_1 = RPNquery;
985 yaz_pqf_destroy(pqf_parser);
993 // yf::SRUtoZ3950::Impl::sru_protocol(const Z_HTTP_Request &http_req) const
995 // const std::string mime_urlencoded("application/x-www-form-urlencoded");
996 // const std::string mime_text_xml("text/xml");
997 // const std::string mime_soap_xml("application/soap+xml");
999 // const std::string http_method(http_req.method);
1000 // const std::string http_type
1001 // = mp_util::http_header_value(http_req.headers, "Content-Type");
1003 // if (http_method == "GET")
1004 // return "SRU GET";
1006 // if (http_method == "POST"
1007 // && http_type == mime_urlencoded)
1008 // return "SRU POST";
1010 // if ( http_method == "POST"
1011 // && (http_type == mime_text_xml
1012 // || http_type == mime_soap_xml))
1013 // return "SRU SOAP";
1019 // yf::SRUtoZ3950::Impl::debug_http(const Z_HTTP_Request &http_req) const
1021 // std::string message("<html>\n<body>\n<h1>"
1022 // "Metaproxy SRUtoZ3950 filter"
1025 // message += "<h3>HTTP Info</h3><br/>\n";
1026 // message += "<p>\n";
1027 // message += "<b>Method: </b> " + std::string(http_req.method) + "<br/>\n";
1028 // message += "<b>Version:</b> " + std::string(http_req.version) + "<br/>\n";
1029 // message += "<b>Path: </b> " + std::string(http_req.path) + "<br/>\n";
1031 // message += "<b>Content-Type:</b>"
1032 // + mp_util::http_header_value(http_req.headers, "Content-Type")
1034 // message += "<b>Content-Length:</b>"
1035 // + mp_util::http_header_value(http_req.headers, "Content-Length")
1037 // message += "</p>\n";
1039 // message += "<h3>Headers</h3><br/>\n";
1040 // message += "<p>\n";
1041 // Z_HTTP_Header* header = http_req.headers;
1043 // message += "<b>Header: </b> <i>"
1044 // + std::string(header->name) + ":</i> "
1045 // + std::string(header->value) + "<br/>\n";
1046 // header = header->next;
1048 // message += "</p>\n";
1049 // message += "</body>\n</html>\n";
1053 // void yf::SRUtoZ3950::Impl::http_response(metaproxy_1::Package &package,
1054 // const std::string &content,
1055 // int http_code) const
1058 // Z_GDU *zgdu_req = package.request().get();
1059 // Z_GDU *zgdu_res = 0;
1062 // = odr.create_HTTP_Response(package.session(),
1063 // zgdu_req->u.HTTP_Request,
1066 // zgdu_res->u.HTTP_Response->content_len = content.size();
1067 // zgdu_res->u.HTTP_Response->content_buf
1068 // = (char*) odr_malloc(odr, zgdu_res->u.HTTP_Response->content_len);
1070 // strncpy(zgdu_res->u.HTTP_Response->content_buf,
1071 // content.c_str(), zgdu_res->u.HTTP_Response->content_len);
1073 // //z_HTTP_header_add(odr, &hres->headers,
1074 // // "Content-Type", content_type.c_str());
1075 // package.response() = zgdu_res;
1080 yf::SRUtoZ3950::Impl::build_esn_from_schema(mp::odr &odr_en,
1081 const char *schema) const
1086 Z_ElementSetNames *esn
1087 = (Z_ElementSetNames *) odr_malloc(odr_en, sizeof(Z_ElementSetNames));
1088 esn->which = Z_ElementSetNames_generic;
1089 esn->u.generic = odr_strdup(odr_en, schema);
1094 yf::SRUtoZ3950::Impl::z3950_to_srw_diag(mp::odr &odr_en,
1095 Z_SRW_searchRetrieveResponse *sru_res,
1096 Z_DefaultDiagFormat *ddf) const
1098 int bib1_code = *ddf->condition;
1099 if (bib1_code == 109)
1101 sru_res->num_diagnostics = 1;
1102 sru_res->diagnostics = (Z_SRW_diagnostic *)
1103 odr_malloc(odr_en, sizeof(*sru_res->diagnostics));
1104 yaz_mk_std_diagnostic(odr_en, sru_res->diagnostics,
1105 yaz_diag_bib1_to_srw(*ddf->condition),
1112 static mp::filter::Base* filter_creator()
1114 return new mp::filter::SRUtoZ3950;
1118 struct metaproxy_1_filter_struct metaproxy_1_filter_sru_to_z3950 = {
1129 * indent-tabs-mode: nil
1130 * c-file-style: "stroustrup"
1132 * vim: shiftwidth=4 tabstop=8 expandtab