1 /* $Id: filter_sru_to_z3950.cpp,v 1.16 2006-09-29 09:48:36 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_sru_response(package, odr_en, soap,
157 sru_pdu_res, charset, stylesheet);
158 package.session().close();
163 // SRU request package translation to Z3950 package
165 std::cout << *sru_pdu_req << "\n";
167 std::cout << "SRU empty\n";
171 if (sru_pdu_req && sru_pdu_req->which == Z_SRW_explain_request)
173 Z_SRW_explainRequest *er_req = sru_pdu_req->u.explain_request;
174 //sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
176 build_simple_explain(package, odr_en, sru_pdu_res, er_req);
181 && sru_pdu_req->which == Z_SRW_searchRetrieve_request
182 && sru_pdu_req->u.request)
184 Z_SRW_searchRetrieveRequest *sr_req = sru_pdu_req->u.request;
186 sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_searchRetrieve_response);
188 // checking that we have a query
189 ok = check_sru_query_exists(package, odr_en, sru_pdu_res, sr_req);
191 if (ok && z3950_init_request(package))
194 ok = z3950_search_request(package, odr_en,
195 sru_pdu_res, sr_req);
198 && sru_pdu_res->u.response->numberOfRecords
199 && *(sru_pdu_res->u.response->numberOfRecords)
200 && sr_req->maximumRecords
201 && *(sr_req->maximumRecords))
203 ok = z3950_present_request(package, odr_en,
206 z3950_close_request(package);
213 && sru_pdu_req->which == Z_SRW_scan_request
214 && sru_pdu_req->u.scan_request)
216 Z_SRW_scanRequest *sr_req = sru_pdu_req->u.scan_request;
218 sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_scan_response);
220 if (z3950_init_request(package))
222 z3950_scan_request(package, odr_en, sru_pdu_res, sr_req);
223 z3950_close_request(package);
228 std::cout << "SRU OPERATION NOT SUPPORTED \n";
229 sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
231 // TODO: make nice diagnostic return package
232 package.session().close();
236 //build_sru_debug_package(package);
237 build_sru_response(package, odr_en, soap,
238 sru_pdu_res, charset, stylesheet);
250 bool yf::SRUtoZ3950::Impl::build_simple_explain(mp::Package &package,
252 Z_SRW_PDU *sru_pdu_res,
257 // z3950'fy recordPacking
258 int record_packing = Z_SRW_recordPacking_XML;
259 if (er_req->recordPacking && 's' == *(er_req->recordPacking))
260 record_packing = Z_SRW_recordPacking_string;
262 // getting database info
263 std::string database("Default");
264 if (er_req->database)
265 database = er_req->database;
267 // building SRU explain record
268 std::string explain_xml
269 = mp_util::to_string(
271 " <serverInfo protocol='SRU'>\n"
273 + package.origin().server_host()
274 + mp_util::to_string("</host>\n"
276 + mp_util::to_string(package.origin().server_port())
277 + mp_util::to_string("</port>\n"
280 + mp_util::to_string("</database>\n"
285 // preparing explain record insert
286 Z_SRW_explainResponse *sru_res = sru_pdu_res->u.explain_response;
288 // = (Z_SRW_record *) odr_malloc(odr_en, sizeof(Z_SRW_record));
290 // inserting one and only explain record
292 sru_res->record.recordPosition = odr_intdup(odr_en, 1);
293 sru_res->record.recordPacking = record_packing;
294 sru_res->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
295 sru_res->record.recordData_len = 1 + explain_xml.size();
296 sru_res->record.recordData_buf
297 = odr_strdupn(odr_en, (const char *)explain_xml.c_str(),
298 1 + explain_xml.size());
304 bool yf::SRUtoZ3950::Impl::build_sru_debug_package(mp::Package &package) const
306 Z_GDU *zgdu_req = package.request().get();
307 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
309 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
310 std::string content = debug_http(*http_req);
312 http_response(package, content, http_code);
315 package.session().close();
320 bool yf::SRUtoZ3950::Impl::build_sru_response(mp::Package &package,
323 const Z_SRW_PDU *sru_pdu_res,
325 const char *stylesheet)
329 // SRU request package translation to Z3950 package
331 std::cout << *(const_cast<Z_SRW_PDU *>(sru_pdu_res)) << "\n";
333 std::cout << "SRU empty\n";
336 Z_GDU *zgdu_req = package.request().get();
337 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
339 Z_GDU *zgdu_res //= z_get_HTTP_Response(odr_en, 200);
340 = odr_en.create_HTTP_Response(package.session(),
341 zgdu_req->u.HTTP_Request,
344 // adding HTTP response code and headers
345 Z_HTTP_Response * http_res = zgdu_res->u.HTTP_Response;
346 //http_res->code = http_code;
348 std::string ctype("text/xml");
350 ctype += "; charset=";
354 z_HTTP_header_add(odr_en,
355 &http_res->headers, "Content-Type", ctype.c_str());
357 // packaging Z_SOAP into HTML response
358 static Z_SOAP_Handler soap_handlers[4] = {
359 {"http://www.loc.gov/zing/srw/", 0,
360 (Z_SOAP_fun) yaz_srw_codec},
361 {"http://www.loc.gov/zing/srw/v1.0/", 0,
362 (Z_SOAP_fun) yaz_srw_codec},
363 {"http://www.loc.gov/zing/srw/update/", 0,
364 (Z_SOAP_fun) yaz_ucp_codec},
369 // empty stylesheet means NO stylesheet
370 if (stylesheet && *stylesheet == '\0')
373 // encoding SRU package
375 soap->u.generic->p = (void*) sru_pdu_res;
377 z_soap_codec_enc_xsl(odr_en, &soap,
378 &http_res->content_buf, &http_res->content_len,
379 soap_handlers, charset, stylesheet);
382 package.response() = zgdu_res;
385 package.session().close();
391 Z_SRW_PDU * yf::SRUtoZ3950::Impl::decode_sru_request(mp::Package &package,
394 Z_SRW_PDU *sru_pdu_res,
400 Z_GDU *zgdu_req = package.request().get();
401 Z_SRW_PDU *sru_pdu_req = 0;
403 assert((zgdu_req->which == Z_GDU_HTTP_Request));
405 //ignoring all non HTTP_Request packages
406 //if (!zgdu_req || !(zgdu_req->which == Z_GDU_HTTP_Request)){
410 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
414 //Z_SRW_PDU *sru_pdu_res_exp = yaz_srw_get(odr_en, Z_SRW_explain_response);
416 if (0 == yaz_sru_decode(http_req, &sru_pdu_req, &soap,
418 &(sru_pdu_res->u.response->diagnostics),
419 &(sru_pdu_res->u.response->num_diagnostics)))
421 if (sru_pdu_res->u.response->num_diagnostics)
423 //sru_pdu_res = sru_pdu_res_exp;
424 package.session().close();
429 else if (0 == yaz_srw_decode(http_req, &sru_pdu_req, &soap,
434 //sru_pdu_res = sru_pdu_res_exp;
435 package.session().close();
442 yf::SRUtoZ3950::Impl::check_sru_query_exists(mp::Package &package,
444 Z_SRW_PDU *sru_pdu_res,
445 Z_SRW_searchRetrieveRequest
449 if( (sr_req->query_type == Z_SRW_query_type_cql && !sr_req->query.cql) )
451 yaz_add_srw_diagnostic(odr_en,
452 &(sru_pdu_res->u.response->diagnostics),
453 &(sru_pdu_res->u.response->num_diagnostics),
455 yaz_add_srw_diagnostic(odr_en,
456 &(sru_pdu_res->u.response->diagnostics),
457 &(sru_pdu_res->u.response->num_diagnostics),
458 10, "CQL query is empty");
461 if( (sr_req->query_type == Z_SRW_query_type_xcql && !sr_req->query.xcql) )
463 yaz_add_srw_diagnostic(odr_en,
464 &(sru_pdu_res->u.response->diagnostics),
465 &(sru_pdu_res->u.response->num_diagnostics),
466 10, "XCQL query is empty");
469 if( (sr_req->query_type == Z_SRW_query_type_pqf && !sr_req->query.pqf) )
471 yaz_add_srw_diagnostic(odr_en,
472 &(sru_pdu_res->u.response->diagnostics),
473 &(sru_pdu_res->u.response->num_diagnostics),
474 10, "PQF query is empty");
483 yf::SRUtoZ3950::Impl::z3950_init_request(mp::Package &package,
484 const std::string &database) const
486 // prepare Z3950 package
488 //Package z3950_package(s, package.origin());
489 Package z3950_package(package.session(), package.origin());
490 z3950_package.copy_filter(package);
492 // set initRequest APDU
493 mp::odr odr_en(ODR_ENCODE);
494 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_initRequest);
495 Z_InitRequest *init_req = apdu->u.initRequest;
496 //TODO: add user name in apdu
497 //TODO: add user passwd in apdu
498 //init_req->idAuthentication = org_init->idAuthentication;
499 //init_req->implementationId = "IDxyz";
500 //init_req->implementationName = "NAMExyz";
501 //init_req->implementationVersion = "VERSIONxyz";
503 ODR_MASK_SET(init_req->options, Z_Options_search);
504 ODR_MASK_SET(init_req->options, Z_Options_present);
505 ODR_MASK_SET(init_req->options, Z_Options_namedResultSets);
506 ODR_MASK_SET(init_req->options, Z_Options_scan);
508 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_1);
509 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_2);
510 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_3);
512 z3950_package.request() = apdu;
514 // send Z3950 package
515 // std::cout << "z3950_init_request " << *apdu <<"\n";
516 z3950_package.move();
518 // dead Z3950 backend detection
519 if (z3950_package.session().is_closed()){
520 package.session().close();
524 // check successful initResponse
525 Z_GDU *z3950_gdu = z3950_package.response().get();
527 if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
528 && z3950_gdu->u.z3950->which == Z_APDU_initResponse)
535 yf::SRUtoZ3950::Impl::z3950_close_request(mp::Package &package) const
538 package.session().close();
540 // prepare and close Z3950 package
541 Package z3950_package(package.session(), package.origin());
542 z3950_package.copy_filter(package);
543 z3950_package.session().close();
546 //mp::odr odr_en(ODR_ENCODE);
547 //Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_close);
548 //z3950_package.request() = apdu;
550 z3950_package.move();
552 // check successful close response
553 //Z_GDU *z3950_gdu = z3950_package.response().get();
554 //if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
555 // && z3950_gdu->u.z3950->which == Z_APDU_close)
558 if (z3950_package.session().is_closed()){
565 yf::SRUtoZ3950::Impl::z3950_search_request(mp::Package &package,
567 Z_SRW_PDU *sru_pdu_res,
568 Z_SRW_searchRetrieveRequest
571 Package z3950_package(package.session(), package.origin());
572 z3950_package.copy_filter(package);
574 //add stuff in z3950 apdu
575 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_searchRequest);
576 Z_SearchRequest *z_searchRequest = apdu->u.searchRequest;
579 z_searchRequest->num_databaseNames = 1;
580 z_searchRequest->databaseNames = (char**)
581 odr_malloc(odr_en, sizeof(char *));
583 if (sr_req->database)
584 z_searchRequest->databaseNames[0]
585 = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
587 z_searchRequest->databaseNames[0]
588 = odr_strdup(odr_en, "Default");
592 Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
593 z_searchRequest->query = z_query;
595 if (!z3950_build_query(odr_en, z_query,
596 (const SRW_query&)sr_req->query,
599 //send_to_srw_client_error(7, "query");
603 z3950_package.request() = apdu;
604 //std::cout << "z3950_search_request " << *apdu << "\n";
606 z3950_package.move();
609 Z_GDU *z3950_gdu = z3950_package.response().get();
610 //std::cout << "z3950_search_request " << *z3950_gdu << "\n";
612 //TODO: check success condition
614 //int yaz_diag_bib1_to_srw (int bib1_code);
615 //int yaz_diag_srw_to_bib1(int srw_code);
616 //Se kode i src/seshigh.c (srw_bend_search, srw_bend_init).
618 if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
619 && z3950_gdu->u.z3950->which == Z_APDU_searchResponse
620 && z3950_gdu->u.z3950->u.searchResponse->searchStatus)
623 Z_SearchResponse *sr = z3950_gdu->u.z3950->u.searchResponse;
626 // srw'fy number of records
627 sru_pdu_res->u.response->numberOfRecords
628 = (int *) odr_malloc(odr_en, sizeof(int *));
629 *(sru_pdu_res->u.response->numberOfRecords) = *(sr->resultCount);
631 // srw'fy nextRecordPosition
632 //sru_pdu_res->u.response->nextRecordPosition
633 // = (int *) odr_malloc(odr_en, sizeof(int *));
634 //*(sru_pdu_res->u.response->nextRecordPosition) = 1;
645 yf::SRUtoZ3950::Impl::z3950_present_request(mp::Package &package,
647 Z_SRW_PDU *sru_pdu_res,
648 Z_SRW_searchRetrieveRequest
657 // no need to work if nobody wants record ..
658 if (!(sr_req->maximumRecords) || 0 == *(sr_req->maximumRecords))
661 // creating Z3950 package
662 Package z3950_package(package.session(), package.origin());
663 z3950_package.copy_filter(package);
664 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_presentRequest);
666 assert(apdu->u.presentRequest);
668 bool send_z3950_present = true;
670 // recordXPath unsupported.
671 if (sr_req->recordXPath)
673 send_z3950_present = false;
674 yaz_add_srw_diagnostic(odr_en,
675 &(sru_pdu_res->u.response->diagnostics),
676 &(sru_pdu_res->u.response->num_diagnostics),
680 // resultSetTTL unsupported.
681 // resultSetIdleTime in response
682 if (sr_req->resultSetTTL)
684 send_z3950_present = false;
685 yaz_add_srw_diagnostic(odr_en,
686 &(sru_pdu_res->u.response->diagnostics),
687 &(sru_pdu_res->u.response->num_diagnostics),
692 if (sr_req->sort_type != Z_SRW_sort_type_none)
694 send_z3950_present = false;
695 yaz_add_srw_diagnostic(odr_en,
696 &(sru_pdu_res->u.response->diagnostics),
697 &(sru_pdu_res->u.response->num_diagnostics),
701 // start record requested larger than number of records
702 if (sr_req->startRecord
703 && sru_pdu_res->u.response->numberOfRecords
704 && *(sr_req->startRecord) > *(sru_pdu_res->u.response->numberOfRecords))
706 // = *(sr_req->startRecord);
707 send_z3950_present = false;
708 yaz_add_srw_diagnostic(odr_en,
709 &(sru_pdu_res->u.response->diagnostics),
710 &(sru_pdu_res->u.response->num_diagnostics),
714 // exit on all these above diagnostics
715 if (!send_z3950_present)
718 // now packaging the z3950 present request
720 // z3950'fy start record position
721 if (sr_req->startRecord)
722 *(apdu->u.presentRequest->resultSetStartPoint)
723 = *(sr_req->startRecord);
725 *(apdu->u.presentRequest->resultSetStartPoint) = 1;
727 // z3950'fy number of records requested
728 if (sr_req->maximumRecords)
729 *(apdu->u.presentRequest->numberOfRecordsRequested)
730 = *(sr_req->maximumRecords);
732 // z3950'fy recordPacking
733 int record_packing = Z_SRW_recordPacking_XML;
734 if (sr_req->recordPacking && 's' == *(sr_req->recordPacking))
735 record_packing = Z_SRW_recordPacking_string;
737 // RecordSyntax will always be XML
738 (apdu->u.presentRequest->preferredRecordSyntax)
739 = yaz_oidval_to_z3950oid (odr_en, CLASS_RECSYN, VAL_TEXT_XML);
741 // z3950'fy record schema
742 if (sr_req->recordSchema)
744 apdu->u.presentRequest->recordComposition
745 = (Z_RecordComposition *) odr_malloc(odr_en, sizeof(Z_RecordComposition));
746 apdu->u.presentRequest->recordComposition->which
747 = Z_RecordComp_simple;
748 apdu->u.presentRequest->recordComposition->u.simple
749 = build_esn_from_schema(odr_en, (const char *) sr_req->recordSchema);
752 // z3950'fy time to live - flagged as diagnostics above
753 //if (sr_req->resultSetTTL)
755 // attaching Z3950 package to filter chain
756 z3950_package.request() = apdu;
758 //std::cout << "z3950_present_request " << *apdu << "\n";
759 z3950_package.move();
761 //check successful Z3950 present response
762 Z_GDU *z3950_gdu = z3950_package.response().get();
763 if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950
764 || z3950_gdu->u.z3950->which != Z_APDU_presentResponse
765 || !z3950_gdu->u.z3950->u.presentResponse)
768 yaz_add_srw_diagnostic(odr_en,
769 &(sru_pdu_res->u.response->diagnostics),
770 &(sru_pdu_res->u.response->num_diagnostics),
772 package.session().close();
777 // everything fine, continuing
778 //std::cout << "z3950_present_request OK\n";
780 Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
781 Z_SRW_searchRetrieveResponse *sru_res = sru_pdu_res->u.response;
783 // checking non surrogate dioagnostics in Z3950 present response package
785 && pr->records->which == Z_Records_NSD
786 && pr->records->u.nonSurrogateDiagnostic)
789 z3950_to_srw_diag(odr_en, sru_res, pr->records->u.nonSurrogateDiagnostic);
793 // copy all records if existing
794 if (pr->records && pr->records->which == Z_Records_DBOSD)
796 // srw'fy number of returned records
798 = pr->records->u.databaseOrSurDiagnostics->num_records;
801 = (Z_SRW_record *) odr_malloc(odr_en,
802 sru_res->num_records *sizeof(Z_SRW_record));
804 // srw'fy nextRecordPosition
805 if (pr->nextResultSetPosition)
806 sru_res->nextRecordPosition
807 = odr_intdup(odr_en, *(pr->nextResultSetPosition));
809 // inserting all records
810 for (int i = 0; i < sru_res->num_records; i++)
812 Z_NamePlusRecord *npr
813 = pr->records->u.databaseOrSurDiagnostics->records[i];
815 sru_res->records[i].recordPosition
816 = odr_intdup(odr_en, i + *(apdu->u.presentRequest->resultSetStartPoint));
818 sru_res->records[i].recordPacking = record_packing;
820 if (npr->which != Z_NamePlusRecord_databaseRecord)
822 sru_res->records[i].recordSchema = "diagnostic";
823 sru_res->records[i].recordData_buf = "67";
824 sru_res->records[i].recordData_len = 2;
828 Z_External *r = npr->u.databaseRecord;
829 oident *ent = oid_getentbyoid(r->direct_reference);
830 if (r->which == Z_External_octet
831 && ent->value == VAL_TEXT_XML)
833 sru_res->records[i].recordSchema = "dc";
834 sru_res->records[i].recordData_buf
835 = odr_strdupn(odr_en,
836 (const char *)r->u.octet_aligned->buf,
837 r->u.octet_aligned->len);
838 sru_res->records[i].recordData_len
839 = r->u.octet_aligned->len;
843 sru_res->records[i].recordSchema = "diagnostic";
844 sru_res->records[i].recordData_buf = "67";
845 sru_res->records[i].recordData_len = 2;
855 yf::SRUtoZ3950::Impl::z3950_scan_request(mp::Package &package,
857 Z_SRW_PDU *sru_pdu_res,
858 Z_SRW_scanRequest const *sr_req) const
860 Package z3950_package(package.session(), package.origin());
861 z3950_package.copy_filter(package);
862 //mp::odr odr_en(ODR_ENCODE);
863 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_scanRequest);
865 //TODO: add stuff in apdu
866 Z_ScanRequest *z_scanRequest = apdu->u.scanRequest;
868 // database repackaging
869 z_scanRequest->num_databaseNames = 1;
870 z_scanRequest->databaseNames = (char**)
871 odr_malloc(odr_en, sizeof(char *));
872 if (sr_req->database)
873 z_scanRequest->databaseNames[0]
874 = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
876 z_scanRequest->databaseNames[0]
877 = odr_strdup(odr_en, "Default");
881 // CQL or XCQL scan is not possible in Z3950, flagging a diagnostic
882 if (sr_req->query_type != Z_SRW_query_type_pqf)
884 //send_to_srw_client_error(7, "query");
888 // PQF query repackaging
889 // need to use Z_AttributesPlusTerm structure, not Z_Query
890 // this can be digget out of a
891 // Z_query->type1(Z_RPNQuery)->RPNStructure(Z_RPNStructure)
892 // ->u.simple(Z_Operand)->u.attributesPlusTerm(Z_AttributesPlusTerm )
894 //Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
895 //z_searchRequest->query = z_query;
897 //if (!z3950_build_query(odr_en, z_query,
898 // (const SRW_query&)sr_req->query,
899 // sr_req->query_type))
901 //send_to_srw_client_error(7, "query");
907 z3950_package.request() = apdu;
908 std::cout << "z3950_scan_request " << *apdu << "\n";
910 z3950_package.move();
911 //TODO: check success condition
916 bool yf::SRUtoZ3950::Impl::z3950_build_query(mp::odr &odr_en, Z_Query *z_query,
917 const SRW_query &query,
918 SRW_query_type query_type) const
920 if (query_type == Z_SRW_query_type_cql)
922 Z_External *ext = (Z_External *)
923 odr_malloc(odr_en, sizeof(*ext));
924 ext->direct_reference =
925 odr_getoidbystr(odr_en, "1.2.840.10003.16.2");
926 ext->indirect_reference = 0;
928 ext->which = Z_External_CQL;
929 ext->u.cql = const_cast<char *>(query.cql);
931 z_query->which = Z_Query_type_104;
932 z_query->u.type_104 = ext;
936 if (query_type == Z_SRW_query_type_pqf)
938 Z_RPNQuery *RPNquery;
939 YAZ_PQF_Parser pqf_parser;
941 pqf_parser = yaz_pqf_create ();
943 RPNquery = yaz_pqf_parse (pqf_parser, odr_en, query.pqf);
946 std::cout << "TODO: Handeling of bad PQF\n";
947 std::cout << "TODO: Diagnostic to be send\n";
949 z_query->which = Z_Query_type_1;
950 z_query->u.type_1 = RPNquery;
952 yaz_pqf_destroy(pqf_parser);
960 yf::SRUtoZ3950::Impl::sru_protocol(const Z_HTTP_Request &http_req) const
962 const std::string mime_urlencoded("application/x-www-form-urlencoded");
963 const std::string mime_text_xml("text/xml");
964 const std::string mime_soap_xml("application/soap+xml");
966 const std::string http_method(http_req.method);
967 const std::string http_type
968 = mp_util::http_header_value(http_req.headers, "Content-Type");
970 if (http_method == "GET")
973 if (http_method == "POST"
974 && http_type == mime_urlencoded)
977 if ( http_method == "POST"
978 && (http_type == mime_text_xml
979 || http_type == mime_soap_xml))
986 yf::SRUtoZ3950::Impl::debug_http(const Z_HTTP_Request &http_req) const
988 std::string message("<html>\n<body>\n<h1>"
989 "Metaproxy SRUtoZ3950 filter"
992 message += "<h3>HTTP Info</h3><br/>\n";
994 message += "<b>Method: </b> " + std::string(http_req.method) + "<br/>\n";
995 message += "<b>Version:</b> " + std::string(http_req.version) + "<br/>\n";
996 message += "<b>Path: </b> " + std::string(http_req.path) + "<br/>\n";
998 message += "<b>Content-Type:</b>"
999 + mp_util::http_header_value(http_req.headers, "Content-Type")
1001 message += "<b>Content-Length:</b>"
1002 + mp_util::http_header_value(http_req.headers, "Content-Length")
1004 message += "</p>\n";
1006 message += "<h3>Headers</h3><br/>\n";
1008 Z_HTTP_Header* header = http_req.headers;
1010 message += "<b>Header: </b> <i>"
1011 + std::string(header->name) + ":</i> "
1012 + std::string(header->value) + "<br/>\n";
1013 header = header->next;
1015 message += "</p>\n";
1016 message += "</body>\n</html>\n";
1020 void yf::SRUtoZ3950::Impl::http_response(metaproxy_1::Package &package,
1021 const std::string &content,
1022 int http_code) const
1025 Z_GDU *zgdu_req = package.request().get();
1026 Z_GDU *zgdu_res = 0;
1029 = odr.create_HTTP_Response(package.session(),
1030 zgdu_req->u.HTTP_Request,
1033 zgdu_res->u.HTTP_Response->content_len = content.size();
1034 zgdu_res->u.HTTP_Response->content_buf
1035 = (char*) odr_malloc(odr, zgdu_res->u.HTTP_Response->content_len);
1037 strncpy(zgdu_res->u.HTTP_Response->content_buf,
1038 content.c_str(), zgdu_res->u.HTTP_Response->content_len);
1040 //z_HTTP_header_add(odr, &hres->headers,
1041 // "Content-Type", content_type.c_str());
1042 package.response() = zgdu_res;
1047 yf::SRUtoZ3950::Impl::build_esn_from_schema(mp::odr &odr_en,
1048 const char *schema) const
1053 Z_ElementSetNames *esn
1054 = (Z_ElementSetNames *) odr_malloc(odr_en, sizeof(Z_ElementSetNames));
1055 esn->which = Z_ElementSetNames_generic;
1056 esn->u.generic = odr_strdup(odr_en, schema);
1061 yf::SRUtoZ3950::Impl::z3950_to_srw_diag(mp::odr &odr_en,
1062 Z_SRW_searchRetrieveResponse *sru_res,
1063 Z_DefaultDiagFormat *ddf) const
1065 int bib1_code = *ddf->condition;
1066 if (bib1_code == 109)
1068 sru_res->num_diagnostics = 1;
1069 sru_res->diagnostics = (Z_SRW_diagnostic *)
1070 odr_malloc(odr_en, sizeof(*sru_res->diagnostics));
1071 yaz_mk_std_diagnostic(odr_en, sru_res->diagnostics,
1072 yaz_diag_bib1_to_srw(*ddf->condition),
1079 static mp::filter::Base* filter_creator()
1081 return new mp::filter::SRUtoZ3950;
1085 struct metaproxy_1_filter_struct metaproxy_1_filter_sru_to_z3950 = {
1096 * indent-tabs-mode: nil
1097 * c-file-style: "stroustrup"
1099 * vim: shiftwidth=4 tabstop=8 expandtab