1 /* $Id: filter_sru_to_z3950.cpp,v 1.17 2006-10-02 12:01:06 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,
259 // z3950'fy recordPacking
260 int record_packing = Z_SRW_recordPacking_XML;
261 if (er_req->recordPacking && 's' == *(er_req->recordPacking))
262 record_packing = Z_SRW_recordPacking_string;
264 // getting database info
265 std::string database("Default");
266 if (er_req->database)
267 database = er_req->database;
269 // getting host and port info
270 std::string host = package.origin().listen_host();
271 std::string port = mp_util::to_string(package.origin().listen_port());
273 // overwriting host and port info if set from HTTP Host header
274 Z_GDU *zgdu_req = package.request().get();
275 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
277 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
280 std::string http_host_address
281 = mp_util::http_header_value(http_req->headers, "Host");
283 std::string::size_type i = http_host_address.rfind(":");
284 if (i != std::string::npos)
286 host.assign(http_host_address, 0, i);
287 port.assign(http_host_address, i + 1, std::string::npos);
292 // building SRU explain record
293 std::string explain_xml
294 = mp_util::to_string(
296 " <serverInfo protocol='SRU'>\n"
299 + mp_util::to_string("</host>\n"
302 + mp_util::to_string("</port>\n"
305 + mp_util::to_string("</database>\n"
310 // preparing explain record insert
311 Z_SRW_explainResponse *sru_res = sru_pdu_res->u.explain_response;
313 // = (Z_SRW_record *) odr_malloc(odr_en, sizeof(Z_SRW_record));
315 // inserting one and only explain record
317 sru_res->record.recordPosition = odr_intdup(odr_en, 1);
318 sru_res->record.recordPacking = record_packing;
319 sru_res->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
320 sru_res->record.recordData_len = 1 + explain_xml.size();
321 sru_res->record.recordData_buf
322 = odr_strdupn(odr_en, (const char *)explain_xml.c_str(),
323 1 + explain_xml.size());
329 bool yf::SRUtoZ3950::Impl::build_sru_debug_package(mp::Package &package) const
331 Z_GDU *zgdu_req = package.request().get();
332 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
334 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
335 std::string content = debug_http(*http_req);
337 http_response(package, content, http_code);
340 package.session().close();
345 bool yf::SRUtoZ3950::Impl::build_sru_response(mp::Package &package,
348 const Z_SRW_PDU *sru_pdu_res,
350 const char *stylesheet)
354 // SRU request package translation to Z3950 package
356 std::cout << *(const_cast<Z_SRW_PDU *>(sru_pdu_res)) << "\n";
358 std::cout << "SRU empty\n";
361 Z_GDU *zgdu_req = package.request().get();
362 if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
364 Z_GDU *zgdu_res //= z_get_HTTP_Response(odr_en, 200);
365 = odr_en.create_HTTP_Response(package.session(),
366 zgdu_req->u.HTTP_Request,
369 // adding HTTP response code and headers
370 Z_HTTP_Response * http_res = zgdu_res->u.HTTP_Response;
371 //http_res->code = http_code;
373 std::string ctype("text/xml");
375 ctype += "; charset=";
379 z_HTTP_header_add(odr_en,
380 &http_res->headers, "Content-Type", ctype.c_str());
382 // packaging Z_SOAP into HTML response
383 static Z_SOAP_Handler soap_handlers[4] = {
384 {"http://www.loc.gov/zing/srw/", 0,
385 (Z_SOAP_fun) yaz_srw_codec},
386 {"http://www.loc.gov/zing/srw/v1.0/", 0,
387 (Z_SOAP_fun) yaz_srw_codec},
388 {"http://www.loc.gov/zing/srw/update/", 0,
389 (Z_SOAP_fun) yaz_ucp_codec},
394 // empty stylesheet means NO stylesheet
395 if (stylesheet && *stylesheet == '\0')
398 // encoding SRU package
400 soap->u.generic->p = (void*) sru_pdu_res;
402 z_soap_codec_enc_xsl(odr_en, &soap,
403 &http_res->content_buf, &http_res->content_len,
404 soap_handlers, charset, stylesheet);
407 package.response() = zgdu_res;
410 package.session().close();
416 Z_SRW_PDU * yf::SRUtoZ3950::Impl::decode_sru_request(mp::Package &package,
419 Z_SRW_PDU *sru_pdu_res,
425 Z_GDU *zgdu_req = package.request().get();
426 Z_SRW_PDU *sru_pdu_req = 0;
428 assert((zgdu_req->which == Z_GDU_HTTP_Request));
430 //ignoring all non HTTP_Request packages
431 //if (!zgdu_req || !(zgdu_req->which == Z_GDU_HTTP_Request)){
435 Z_HTTP_Request* http_req = zgdu_req->u.HTTP_Request;
439 //Z_SRW_PDU *sru_pdu_res_exp = yaz_srw_get(odr_en, Z_SRW_explain_response);
441 if (0 == yaz_sru_decode(http_req, &sru_pdu_req, &soap,
443 &(sru_pdu_res->u.response->diagnostics),
444 &(sru_pdu_res->u.response->num_diagnostics)))
446 if (sru_pdu_res->u.response->num_diagnostics)
448 //sru_pdu_res = sru_pdu_res_exp;
449 package.session().close();
454 else if (0 == yaz_srw_decode(http_req, &sru_pdu_req, &soap,
459 //sru_pdu_res = sru_pdu_res_exp;
460 package.session().close();
467 yf::SRUtoZ3950::Impl::check_sru_query_exists(mp::Package &package,
469 Z_SRW_PDU *sru_pdu_res,
470 Z_SRW_searchRetrieveRequest
474 if( (sr_req->query_type == Z_SRW_query_type_cql && !sr_req->query.cql) )
476 yaz_add_srw_diagnostic(odr_en,
477 &(sru_pdu_res->u.response->diagnostics),
478 &(sru_pdu_res->u.response->num_diagnostics),
480 yaz_add_srw_diagnostic(odr_en,
481 &(sru_pdu_res->u.response->diagnostics),
482 &(sru_pdu_res->u.response->num_diagnostics),
483 10, "CQL query is empty");
486 if( (sr_req->query_type == Z_SRW_query_type_xcql && !sr_req->query.xcql) )
488 yaz_add_srw_diagnostic(odr_en,
489 &(sru_pdu_res->u.response->diagnostics),
490 &(sru_pdu_res->u.response->num_diagnostics),
491 10, "XCQL query is empty");
494 if( (sr_req->query_type == Z_SRW_query_type_pqf && !sr_req->query.pqf) )
496 yaz_add_srw_diagnostic(odr_en,
497 &(sru_pdu_res->u.response->diagnostics),
498 &(sru_pdu_res->u.response->num_diagnostics),
499 10, "PQF query is empty");
508 yf::SRUtoZ3950::Impl::z3950_init_request(mp::Package &package,
509 const std::string &database) const
511 // prepare Z3950 package
513 //Package z3950_package(s, package.origin());
514 Package z3950_package(package.session(), package.origin());
515 z3950_package.copy_filter(package);
517 // set initRequest APDU
518 mp::odr odr_en(ODR_ENCODE);
519 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_initRequest);
520 Z_InitRequest *init_req = apdu->u.initRequest;
521 //TODO: add user name in apdu
522 //TODO: add user passwd in apdu
523 //init_req->idAuthentication = org_init->idAuthentication;
524 //init_req->implementationId = "IDxyz";
525 //init_req->implementationName = "NAMExyz";
526 //init_req->implementationVersion = "VERSIONxyz";
528 ODR_MASK_SET(init_req->options, Z_Options_search);
529 ODR_MASK_SET(init_req->options, Z_Options_present);
530 ODR_MASK_SET(init_req->options, Z_Options_namedResultSets);
531 ODR_MASK_SET(init_req->options, Z_Options_scan);
533 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_1);
534 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_2);
535 ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_3);
537 z3950_package.request() = apdu;
539 // send Z3950 package
540 // std::cout << "z3950_init_request " << *apdu <<"\n";
541 z3950_package.move();
543 // dead Z3950 backend detection
544 if (z3950_package.session().is_closed()){
545 package.session().close();
549 // check successful initResponse
550 Z_GDU *z3950_gdu = z3950_package.response().get();
552 if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
553 && z3950_gdu->u.z3950->which == Z_APDU_initResponse)
560 yf::SRUtoZ3950::Impl::z3950_close_request(mp::Package &package) const
563 package.session().close();
565 // prepare and close Z3950 package
566 Package z3950_package(package.session(), package.origin());
567 z3950_package.copy_filter(package);
568 z3950_package.session().close();
571 //mp::odr odr_en(ODR_ENCODE);
572 //Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_close);
573 //z3950_package.request() = apdu;
575 z3950_package.move();
577 // check successful close response
578 //Z_GDU *z3950_gdu = z3950_package.response().get();
579 //if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
580 // && z3950_gdu->u.z3950->which == Z_APDU_close)
583 if (z3950_package.session().is_closed()){
590 yf::SRUtoZ3950::Impl::z3950_search_request(mp::Package &package,
592 Z_SRW_PDU *sru_pdu_res,
593 Z_SRW_searchRetrieveRequest
596 Package z3950_package(package.session(), package.origin());
597 z3950_package.copy_filter(package);
599 //add stuff in z3950 apdu
600 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_searchRequest);
601 Z_SearchRequest *z_searchRequest = apdu->u.searchRequest;
604 z_searchRequest->num_databaseNames = 1;
605 z_searchRequest->databaseNames = (char**)
606 odr_malloc(odr_en, sizeof(char *));
608 if (sr_req->database)
609 z_searchRequest->databaseNames[0]
610 = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
612 z_searchRequest->databaseNames[0]
613 = odr_strdup(odr_en, "Default");
617 Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
618 z_searchRequest->query = z_query;
620 if (!z3950_build_query(odr_en, z_query,
621 (const SRW_query&)sr_req->query,
624 //send_to_srw_client_error(7, "query");
628 z3950_package.request() = apdu;
629 //std::cout << "z3950_search_request " << *apdu << "\n";
631 z3950_package.move();
634 Z_GDU *z3950_gdu = z3950_package.response().get();
635 //std::cout << "z3950_search_request " << *z3950_gdu << "\n";
637 //TODO: check success condition
639 //int yaz_diag_bib1_to_srw (int bib1_code);
640 //int yaz_diag_srw_to_bib1(int srw_code);
641 //Se kode i src/seshigh.c (srw_bend_search, srw_bend_init).
643 if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
644 && z3950_gdu->u.z3950->which == Z_APDU_searchResponse
645 && z3950_gdu->u.z3950->u.searchResponse->searchStatus)
648 Z_SearchResponse *sr = z3950_gdu->u.z3950->u.searchResponse;
651 // srw'fy number of records
652 sru_pdu_res->u.response->numberOfRecords
653 = (int *) odr_malloc(odr_en, sizeof(int *));
654 *(sru_pdu_res->u.response->numberOfRecords) = *(sr->resultCount);
656 // srw'fy nextRecordPosition
657 //sru_pdu_res->u.response->nextRecordPosition
658 // = (int *) odr_malloc(odr_en, sizeof(int *));
659 //*(sru_pdu_res->u.response->nextRecordPosition) = 1;
670 yf::SRUtoZ3950::Impl::z3950_present_request(mp::Package &package,
672 Z_SRW_PDU *sru_pdu_res,
673 Z_SRW_searchRetrieveRequest
682 // no need to work if nobody wants record ..
683 if (!(sr_req->maximumRecords) || 0 == *(sr_req->maximumRecords))
686 // creating Z3950 package
687 Package z3950_package(package.session(), package.origin());
688 z3950_package.copy_filter(package);
689 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_presentRequest);
691 assert(apdu->u.presentRequest);
693 bool send_z3950_present = true;
695 // recordXPath unsupported.
696 if (sr_req->recordXPath)
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),
705 // resultSetTTL unsupported.
706 // resultSetIdleTime in response
707 if (sr_req->resultSetTTL)
709 send_z3950_present = false;
710 yaz_add_srw_diagnostic(odr_en,
711 &(sru_pdu_res->u.response->diagnostics),
712 &(sru_pdu_res->u.response->num_diagnostics),
717 if (sr_req->sort_type != Z_SRW_sort_type_none)
719 send_z3950_present = false;
720 yaz_add_srw_diagnostic(odr_en,
721 &(sru_pdu_res->u.response->diagnostics),
722 &(sru_pdu_res->u.response->num_diagnostics),
726 // start record requested larger than number of records
727 if (sr_req->startRecord
728 && sru_pdu_res->u.response->numberOfRecords
729 && *(sr_req->startRecord) > *(sru_pdu_res->u.response->numberOfRecords))
731 // = *(sr_req->startRecord);
732 send_z3950_present = false;
733 yaz_add_srw_diagnostic(odr_en,
734 &(sru_pdu_res->u.response->diagnostics),
735 &(sru_pdu_res->u.response->num_diagnostics),
739 // exit on all these above diagnostics
740 if (!send_z3950_present)
743 // now packaging the z3950 present request
745 // z3950'fy start record position
746 if (sr_req->startRecord)
747 *(apdu->u.presentRequest->resultSetStartPoint)
748 = *(sr_req->startRecord);
750 *(apdu->u.presentRequest->resultSetStartPoint) = 1;
752 // z3950'fy number of records requested
753 if (sr_req->maximumRecords)
754 *(apdu->u.presentRequest->numberOfRecordsRequested)
755 = *(sr_req->maximumRecords);
757 // z3950'fy recordPacking
758 int record_packing = Z_SRW_recordPacking_XML;
759 if (sr_req->recordPacking && 's' == *(sr_req->recordPacking))
760 record_packing = Z_SRW_recordPacking_string;
762 // RecordSyntax will always be XML
763 (apdu->u.presentRequest->preferredRecordSyntax)
764 = yaz_oidval_to_z3950oid (odr_en, CLASS_RECSYN, VAL_TEXT_XML);
766 // z3950'fy record schema
767 if (sr_req->recordSchema)
769 apdu->u.presentRequest->recordComposition
770 = (Z_RecordComposition *) 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, (const char *) sr_req->recordSchema);
777 // z3950'fy time to live - flagged as diagnostics above
778 //if (sr_req->resultSetTTL)
780 // attaching Z3950 package to filter chain
781 z3950_package.request() = apdu;
783 //std::cout << "z3950_present_request " << *apdu << "\n";
784 z3950_package.move();
786 //check successful Z3950 present response
787 Z_GDU *z3950_gdu = z3950_package.response().get();
788 if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950
789 || z3950_gdu->u.z3950->which != Z_APDU_presentResponse
790 || !z3950_gdu->u.z3950->u.presentResponse)
793 yaz_add_srw_diagnostic(odr_en,
794 &(sru_pdu_res->u.response->diagnostics),
795 &(sru_pdu_res->u.response->num_diagnostics),
797 package.session().close();
802 // everything fine, continuing
803 //std::cout << "z3950_present_request OK\n";
805 Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
806 Z_SRW_searchRetrieveResponse *sru_res = sru_pdu_res->u.response;
808 // checking non surrogate dioagnostics in Z3950 present response package
810 && pr->records->which == Z_Records_NSD
811 && pr->records->u.nonSurrogateDiagnostic)
814 z3950_to_srw_diag(odr_en, sru_res, pr->records->u.nonSurrogateDiagnostic);
818 // copy all records if existing
819 if (pr->records && pr->records->which == Z_Records_DBOSD)
821 // srw'fy number of returned records
823 = pr->records->u.databaseOrSurDiagnostics->num_records;
826 = (Z_SRW_record *) odr_malloc(odr_en,
827 sru_res->num_records *sizeof(Z_SRW_record));
829 // srw'fy nextRecordPosition
830 if (pr->nextResultSetPosition)
831 sru_res->nextRecordPosition
832 = odr_intdup(odr_en, *(pr->nextResultSetPosition));
834 // inserting all records
835 for (int i = 0; i < sru_res->num_records; i++)
837 Z_NamePlusRecord *npr
838 = pr->records->u.databaseOrSurDiagnostics->records[i];
840 sru_res->records[i].recordPosition
841 = odr_intdup(odr_en, i + *(apdu->u.presentRequest->resultSetStartPoint));
843 sru_res->records[i].recordPacking = record_packing;
845 if (npr->which != Z_NamePlusRecord_databaseRecord)
847 sru_res->records[i].recordSchema = "diagnostic";
848 sru_res->records[i].recordData_buf = "67";
849 sru_res->records[i].recordData_len = 2;
853 Z_External *r = npr->u.databaseRecord;
854 oident *ent = oid_getentbyoid(r->direct_reference);
855 if (r->which == Z_External_octet
856 && ent->value == VAL_TEXT_XML)
858 sru_res->records[i].recordSchema = "dc";
859 sru_res->records[i].recordData_buf
860 = odr_strdupn(odr_en,
861 (const char *)r->u.octet_aligned->buf,
862 r->u.octet_aligned->len);
863 sru_res->records[i].recordData_len
864 = r->u.octet_aligned->len;
868 sru_res->records[i].recordSchema = "diagnostic";
869 sru_res->records[i].recordData_buf = "67";
870 sru_res->records[i].recordData_len = 2;
880 yf::SRUtoZ3950::Impl::z3950_scan_request(mp::Package &package,
882 Z_SRW_PDU *sru_pdu_res,
883 Z_SRW_scanRequest const *sr_req) const
885 Package z3950_package(package.session(), package.origin());
886 z3950_package.copy_filter(package);
887 //mp::odr odr_en(ODR_ENCODE);
888 Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_scanRequest);
890 //TODO: add stuff in apdu
891 Z_ScanRequest *z_scanRequest = apdu->u.scanRequest;
893 // database repackaging
894 z_scanRequest->num_databaseNames = 1;
895 z_scanRequest->databaseNames = (char**)
896 odr_malloc(odr_en, sizeof(char *));
897 if (sr_req->database)
898 z_scanRequest->databaseNames[0]
899 = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
901 z_scanRequest->databaseNames[0]
902 = odr_strdup(odr_en, "Default");
906 // CQL or XCQL scan is not possible in Z3950, flagging a diagnostic
907 if (sr_req->query_type != Z_SRW_query_type_pqf)
909 //send_to_srw_client_error(7, "query");
913 // PQF query repackaging
914 // need to use Z_AttributesPlusTerm structure, not Z_Query
915 // this can be digget out of a
916 // Z_query->type1(Z_RPNQuery)->RPNStructure(Z_RPNStructure)
917 // ->u.simple(Z_Operand)->u.attributesPlusTerm(Z_AttributesPlusTerm )
919 //Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
920 //z_searchRequest->query = z_query;
922 //if (!z3950_build_query(odr_en, z_query,
923 // (const SRW_query&)sr_req->query,
924 // sr_req->query_type))
926 //send_to_srw_client_error(7, "query");
932 z3950_package.request() = apdu;
933 std::cout << "z3950_scan_request " << *apdu << "\n";
935 z3950_package.move();
936 //TODO: check success condition
941 bool yf::SRUtoZ3950::Impl::z3950_build_query(mp::odr &odr_en, Z_Query *z_query,
942 const SRW_query &query,
943 SRW_query_type query_type) const
945 if (query_type == Z_SRW_query_type_cql)
947 Z_External *ext = (Z_External *)
948 odr_malloc(odr_en, sizeof(*ext));
949 ext->direct_reference =
950 odr_getoidbystr(odr_en, "1.2.840.10003.16.2");
951 ext->indirect_reference = 0;
953 ext->which = Z_External_CQL;
954 ext->u.cql = const_cast<char *>(query.cql);
956 z_query->which = Z_Query_type_104;
957 z_query->u.type_104 = ext;
961 if (query_type == Z_SRW_query_type_pqf)
963 Z_RPNQuery *RPNquery;
964 YAZ_PQF_Parser pqf_parser;
966 pqf_parser = yaz_pqf_create ();
968 RPNquery = yaz_pqf_parse (pqf_parser, odr_en, query.pqf);
971 std::cout << "TODO: Handeling of bad PQF\n";
972 std::cout << "TODO: Diagnostic to be send\n";
974 z_query->which = Z_Query_type_1;
975 z_query->u.type_1 = RPNquery;
977 yaz_pqf_destroy(pqf_parser);
985 yf::SRUtoZ3950::Impl::sru_protocol(const Z_HTTP_Request &http_req) const
987 const std::string mime_urlencoded("application/x-www-form-urlencoded");
988 const std::string mime_text_xml("text/xml");
989 const std::string mime_soap_xml("application/soap+xml");
991 const std::string http_method(http_req.method);
992 const std::string http_type
993 = mp_util::http_header_value(http_req.headers, "Content-Type");
995 if (http_method == "GET")
998 if (http_method == "POST"
999 && http_type == mime_urlencoded)
1002 if ( http_method == "POST"
1003 && (http_type == mime_text_xml
1004 || http_type == mime_soap_xml))
1011 yf::SRUtoZ3950::Impl::debug_http(const Z_HTTP_Request &http_req) const
1013 std::string message("<html>\n<body>\n<h1>"
1014 "Metaproxy SRUtoZ3950 filter"
1017 message += "<h3>HTTP Info</h3><br/>\n";
1019 message += "<b>Method: </b> " + std::string(http_req.method) + "<br/>\n";
1020 message += "<b>Version:</b> " + std::string(http_req.version) + "<br/>\n";
1021 message += "<b>Path: </b> " + std::string(http_req.path) + "<br/>\n";
1023 message += "<b>Content-Type:</b>"
1024 + mp_util::http_header_value(http_req.headers, "Content-Type")
1026 message += "<b>Content-Length:</b>"
1027 + mp_util::http_header_value(http_req.headers, "Content-Length")
1029 message += "</p>\n";
1031 message += "<h3>Headers</h3><br/>\n";
1033 Z_HTTP_Header* header = http_req.headers;
1035 message += "<b>Header: </b> <i>"
1036 + std::string(header->name) + ":</i> "
1037 + std::string(header->value) + "<br/>\n";
1038 header = header->next;
1040 message += "</p>\n";
1041 message += "</body>\n</html>\n";
1045 void yf::SRUtoZ3950::Impl::http_response(metaproxy_1::Package &package,
1046 const std::string &content,
1047 int http_code) const
1050 Z_GDU *zgdu_req = package.request().get();
1051 Z_GDU *zgdu_res = 0;
1054 = odr.create_HTTP_Response(package.session(),
1055 zgdu_req->u.HTTP_Request,
1058 zgdu_res->u.HTTP_Response->content_len = content.size();
1059 zgdu_res->u.HTTP_Response->content_buf
1060 = (char*) odr_malloc(odr, zgdu_res->u.HTTP_Response->content_len);
1062 strncpy(zgdu_res->u.HTTP_Response->content_buf,
1063 content.c_str(), zgdu_res->u.HTTP_Response->content_len);
1065 //z_HTTP_header_add(odr, &hres->headers,
1066 // "Content-Type", content_type.c_str());
1067 package.response() = zgdu_res;
1072 yf::SRUtoZ3950::Impl::build_esn_from_schema(mp::odr &odr_en,
1073 const char *schema) const
1078 Z_ElementSetNames *esn
1079 = (Z_ElementSetNames *) odr_malloc(odr_en, sizeof(Z_ElementSetNames));
1080 esn->which = Z_ElementSetNames_generic;
1081 esn->u.generic = odr_strdup(odr_en, schema);
1086 yf::SRUtoZ3950::Impl::z3950_to_srw_diag(mp::odr &odr_en,
1087 Z_SRW_searchRetrieveResponse *sru_res,
1088 Z_DefaultDiagFormat *ddf) const
1090 int bib1_code = *ddf->condition;
1091 if (bib1_code == 109)
1093 sru_res->num_diagnostics = 1;
1094 sru_res->diagnostics = (Z_SRW_diagnostic *)
1095 odr_malloc(odr_en, sizeof(*sru_res->diagnostics));
1096 yaz_mk_std_diagnostic(odr_en, sru_res->diagnostics,
1097 yaz_diag_bib1_to_srw(*ddf->condition),
1104 static mp::filter::Base* filter_creator()
1106 return new mp::filter::SRUtoZ3950;
1110 struct metaproxy_1_filter_struct metaproxy_1_filter_sru_to_z3950 = {
1121 * indent-tabs-mode: nil
1122 * c-file-style: "stroustrup"
1124 * vim: shiftwidth=4 tabstop=8 expandtab