1 /* This file is part of Metaproxy.
2 Copyright (C) 2005-2011 Index Data
4 Metaproxy is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "filter_zoom.hpp"
23 #include <metaproxy/package.hpp>
24 #include <metaproxy/util.hpp>
27 #include <libxslt/xsltutils.h>
28 #include <libxslt/transform.h>
30 #include <boost/thread/mutex.hpp>
31 #include <boost/thread/condition.hpp>
34 #include <yaz/oid_db.h>
35 #include <yaz/diagbib1.h>
38 #include <yaz/querytowrbuf.h>
40 namespace mp = metaproxy_1;
41 namespace yf = mp::filter;
43 namespace metaproxy_1 {
45 struct Zoom::Searchable : boost::noncopyable {
46 std::string authentication;
52 std::string query_encoding;
54 std::string request_syntax;
55 std::string element_set;
56 std::string record_encoding;
57 std::string transform_xsl_fname;
60 CCL_bibset ccl_bibset;
64 class Zoom::Backend : boost::noncopyable {
66 friend class Frontend;
68 ZOOM_connection m_connection;
69 ZOOM_resultset m_resultset;
70 std::string m_frontend_database;
72 xsltStylesheetPtr xsp;
74 Backend(SearchablePtr sptr);
76 void connect(std::string zurl, int *error, const char **addinfo);
77 void search_pqf(const char *pqf, Odr_int *hits,
78 int *error, const char **addinfo);
79 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
80 int *error, const char **addinfo);
81 void set_option(const char *name, const char *value);
82 int get_error(const char **addinfo);
84 class Zoom::Frontend : boost::noncopyable {
89 yazpp_1::GDU m_init_gdu;
91 void handle_package(mp::Package &package);
92 void handle_search(mp::Package &package);
93 void handle_present(mp::Package &package);
94 BackendPtr get_backend_from_databases(std::string &database,
96 const char **addinfo);
97 Z_Records *get_records(Odr_int start,
98 Odr_int number_to_present,
100 const char **addinfo,
101 Odr_int *number_of_records_returned,
102 ODR odr, BackendPtr b,
103 Odr_oid *preferredRecordSyntax,
104 const char *element_set_name);
106 Frontend(Impl *impl);
110 friend class Frontend;
114 void process(metaproxy_1::Package & package);
115 void configure(const xmlNode * ptr, bool test_only);
117 FrontendPtr get_frontend(mp::Package &package);
118 void release_frontend(mp::Package &package);
119 SearchablePtr parse_torus(const xmlNode *ptr);
121 std::map<mp::Session, FrontendPtr> m_clients;
122 boost::mutex m_mutex;
123 boost::condition m_cond_session_ready;
124 std::string torus_url;
130 // define Pimpl wrapper forwarding to Impl
132 yf::Zoom::Zoom() : m_p(new Impl)
137 { // must have a destructor because of boost::scoped_ptr
140 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only)
142 m_p->configure(xmlnode, test_only);
145 void yf::Zoom::process(mp::Package &package) const
147 m_p->process(package);
151 // define Implementation stuff
153 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
155 m_connection = ZOOM_connection_create(0);
160 yf::Zoom::Backend::~Backend()
163 xsltFreeStylesheet(xsp);
164 ZOOM_connection_destroy(m_connection);
165 ZOOM_resultset_destroy(m_resultset);
168 void yf::Zoom::Backend::connect(std::string zurl,
169 int *error, const char **addinfo)
171 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
172 *error = ZOOM_connection_error(m_connection, 0, addinfo);
175 void yf::Zoom::Backend::search_pqf(const char *pqf, Odr_int *hits,
176 int *error, const char **addinfo)
178 m_resultset = ZOOM_connection_search_pqf(m_connection, pqf);
179 *error = ZOOM_connection_error(m_connection, 0, addinfo);
181 *hits = ZOOM_resultset_size(m_resultset);
186 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
188 int *error, const char **addinfo)
190 ZOOM_resultset_records(m_resultset, recs, start, number);
191 *error = ZOOM_connection_error(m_connection, 0, addinfo);
194 void yf::Zoom::Backend::set_option(const char *name, const char *value)
196 ZOOM_connection_option_set(m_connection, name, value);
198 ZOOM_resultset_option_set(m_resultset, name, value);
201 int yf::Zoom::Backend::get_error(const char **addinfo)
203 return ZOOM_connection_error(m_connection, 0, addinfo);
206 yf::Zoom::Searchable::Searchable()
209 use_turbomarc = true;
210 ccl_bibset = ccl_qual_mk();
213 yf::Zoom::Searchable::~Searchable()
215 ccl_qual_rm(&ccl_bibset);
218 yf::Zoom::Frontend::Frontend(Impl *impl) :
219 m_p(impl), m_is_virtual(false), m_in_use(true)
223 yf::Zoom::Frontend::~Frontend()
227 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
229 boost::mutex::scoped_lock lock(m_mutex);
231 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
235 it = m_clients.find(package.session());
236 if (it == m_clients.end())
239 if (!it->second->m_in_use)
241 it->second->m_in_use = true;
244 m_cond_session_ready.wait(lock);
246 FrontendPtr f(new Frontend(this));
247 m_clients[package.session()] = f;
252 void yf::Zoom::Impl::release_frontend(mp::Package &package)
254 boost::mutex::scoped_lock lock(m_mutex);
255 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
257 it = m_clients.find(package.session());
258 if (it != m_clients.end())
260 if (package.session().is_closed())
266 it->second->m_in_use = false;
268 m_cond_session_ready.notify_all();
272 yf::Zoom::Impl::Impl()
276 yf::Zoom::Impl::~Impl()
280 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus(const xmlNode *ptr1)
282 SearchablePtr notfound;
285 for (ptr1 = ptr1->children; ptr1; ptr1 = ptr1->next)
287 if (ptr1->type != XML_ELEMENT_NODE)
289 if (!strcmp((const char *) ptr1->name, "record"))
291 const xmlNode *ptr2 = ptr1;
292 for (ptr2 = ptr2->children; ptr2; ptr2 = ptr2->next)
294 if (ptr2->type != XML_ELEMENT_NODE)
296 if (!strcmp((const char *) ptr2->name, "layer"))
298 Zoom::SearchablePtr s(new Searchable);
300 const xmlNode *ptr3 = ptr2;
301 for (ptr3 = ptr3->children; ptr3; ptr3 = ptr3->next)
303 if (ptr3->type != XML_ELEMENT_NODE)
305 if (!strcmp((const char *) ptr3->name,
308 s->authentication = mp::xml::get_text(ptr3);
310 else if (!strcmp((const char *) ptr3->name,
313 s->cfAuth = mp::xml::get_text(ptr3);
315 else if (!strcmp((const char *) ptr3->name,
318 s->cfProxy = mp::xml::get_text(ptr3);
320 else if (!strcmp((const char *) ptr3->name,
323 s->cfSubDb = mp::xml::get_text(ptr3);
325 else if (!strcmp((const char *) ptr3->name, "id"))
327 s->database = mp::xml::get_text(ptr3);
329 else if (!strcmp((const char *) ptr3->name, "zurl"))
331 s->target = mp::xml::get_text(ptr3);
333 else if (!strcmp((const char *) ptr3->name, "sru"))
335 s->sru = mp::xml::get_text(ptr3);
337 else if (!strcmp((const char *) ptr3->name,
340 s->query_encoding = mp::xml::get_text(ptr3);
342 else if (!strcmp((const char *) ptr3->name,
345 s->piggyback = mp::xml::get_bool(ptr3, true);
347 else if (!strcmp((const char *) ptr3->name,
350 s->request_syntax = mp::xml::get_text(ptr3);
352 else if (!strcmp((const char *) ptr3->name,
355 s->element_set = mp::xml::get_text(ptr3);
357 else if (!strcmp((const char *) ptr3->name,
360 s->record_encoding = mp::xml::get_text(ptr3);
362 else if (!strcmp((const char *) ptr3->name,
365 s->transform_xsl_fname = mp::xml::get_text(ptr3);
367 else if (!strcmp((const char *) ptr3->name,
370 ; // useTurboMarc is ignored
372 else if (!strncmp((const char *) ptr3->name,
375 std::string value = mp::xml::get_text(ptr3);
376 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
377 (const char *) ptr3->name + 7);
380 if (s->database.length() && s->target.length())
382 yaz_log(YLOG_LOG, "add db=%s target=%s",
383 s->database.c_str(), s->target.c_str());
393 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only)
395 for (ptr = ptr->children; ptr; ptr = ptr->next)
397 if (ptr->type != XML_ELEMENT_NODE)
399 else if (!strcmp((const char *) ptr->name, "torus"))
401 const struct _xmlAttr *attr;
402 for (attr = ptr->properties; attr; attr = attr->next)
404 if (!strcmp((const char *) attr->name, "url"))
405 torus_url = mp::xml::get_text(attr->children);
406 else if (!strcmp((const char *) attr->name, "xsldir"))
407 xsldir = mp::xml::get_text(attr->children);
409 throw mp::filter::FilterException(
410 "Bad attribute " + std::string((const char *)
414 else if (!strcmp((const char *) ptr->name, "records"))
416 yaz_log(YLOG_WARN, "records ignored!");
420 throw mp::filter::FilterException
422 + std::string((const char *) ptr->name)
423 + " in zoom filter");
428 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
429 std::string &database, int *error, const char **addinfo)
431 std::list<BackendPtr>::const_iterator map_it;
432 if (m_backend && m_backend->m_frontend_database == database)
435 xmlDoc *doc = mp::get_searchable(m_p->torus_url, database);
438 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
439 *addinfo = database.c_str();
443 SearchablePtr sptr = m_p->parse_torus(xmlDocGetRootElement(doc));
447 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
448 *addinfo = database.c_str();
453 xsltStylesheetPtr xsp = 0;
454 if (sptr->transform_xsl_fname.length())
458 if (m_p->xsldir.length())
459 fname = m_p->xsldir + "/" + sptr->transform_xsl_fname;
461 fname = sptr->transform_xsl_fname;
462 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
465 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
466 *addinfo = "xmlParseFile failed";
470 xsp = xsltParseStylesheetDoc(xsp_doc);
473 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
474 *addinfo = "xsltParseStylesheetDoc failed";
483 BackendPtr b(new Backend(sptr));
487 b->m_frontend_database = database;
488 std::string authentication = sptr->authentication;
490 if (sptr->query_encoding.length())
491 b->set_option("rpnCharset", sptr->query_encoding.c_str());
493 if (sptr->cfAuth.length())
495 b->set_option("user", sptr->cfAuth.c_str());
496 if (authentication.length())
498 size_t found = authentication.find('/');
499 if (found != std::string::npos)
501 cf_parm += "user=" + mp::util::uri_encode(authentication.substr(0, found))
502 + "&password=" + mp::util::uri_encode(authentication.substr(found+1));
505 cf_parm += "user=" + mp::util::uri_encode(authentication);
508 else if (authentication.length())
509 b->set_option("user", authentication.c_str());
511 if (sptr->cfProxy.length())
513 if (cf_parm.length())
515 cf_parm += "proxy=" + mp::util::uri_encode(sptr->cfProxy);
517 if (sptr->cfSubDb.length())
519 if (cf_parm.length())
521 cf_parm += "subdatabase=" + mp::util::uri_encode(sptr->cfSubDb);
525 if (sptr->sru.length())
527 url = "http://" + sptr->target;
528 b->set_option("sru", sptr->sru.c_str());
534 if (cf_parm.length())
536 url += "," + cf_parm;
538 b->connect(url, error, addinfo);
546 Z_Records *yf::Zoom::Frontend::get_records(Odr_int start,
547 Odr_int number_to_present,
549 const char **addinfo,
550 Odr_int *number_of_records_returned,
553 Odr_oid *preferredRecordSyntax,
554 const char *element_set_name)
556 *number_of_records_returned = 0;
557 Z_Records *records = 0;
558 bool enable_pz2_transform = false;
560 if (start < 0 || number_to_present <= 0)
563 if (number_to_present > 10000)
564 number_to_present = 10000;
566 ZOOM_record *recs = (ZOOM_record *)
567 odr_malloc(odr, number_to_present * sizeof(*recs));
569 char oid_name_str[OID_STR_MAX];
570 const char *syntax_name = 0;
572 if (preferredRecordSyntax)
574 if (!oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
575 && element_set_name &&
576 !strcmp(element_set_name, "pz2"))
578 if (b->sptr->request_syntax.length())
580 syntax_name = b->sptr->request_syntax.c_str();
581 enable_pz2_transform = true;
587 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
591 b->set_option("preferredRecordSyntax", syntax_name);
593 if (enable_pz2_transform)
595 element_set_name = "F";
596 if (b->sptr->element_set.length())
597 element_set_name = b->sptr->element_set.c_str();
600 b->set_option("elementSetName", element_set_name);
602 b->present(start, number_to_present, recs, error, addinfo);
607 for (i = 0; i < number_to_present; i++)
612 { // only return records if no error and at least one record
613 char *odr_database = odr_strdup(odr,
614 b->m_frontend_database.c_str());
615 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
616 odr_malloc(odr, sizeof(*npl));
617 *number_of_records_returned = i;
618 npl->num_records = i;
619 npl->records = (Z_NamePlusRecord **)
620 odr_malloc(odr, i * sizeof(*npl->records));
621 for (i = 0; i < number_to_present; i++)
623 Z_NamePlusRecord *npr = 0;
625 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
626 &addinfo, 0 /* diagset */);
630 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
633 else if (enable_pz2_transform)
635 char rec_type_str[100];
637 strcpy(rec_type_str, b->sptr->use_turbomarc ?
640 // prevent buffer overflow ...
641 if (b->sptr->record_encoding.length() > 0 &&
642 b->sptr->record_encoding.length() <
643 (sizeof(rec_type_str)-20))
645 strcat(rec_type_str, "; charset=");
646 strcat(rec_type_str, b->sptr->record_encoding.c_str());
650 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
652 if (rec_buf && b->xsp)
654 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
658 rec_res = xsltApplyStylesheet(b->xsp, rec_doc, 0);
661 xsltSaveResultToString((xmlChar **) &rec_buf, &rec_len,
668 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
669 npr->databaseName = odr_database;
670 npr->which = Z_NamePlusRecord_databaseRecord;
671 npr->u.databaseRecord =
672 z_ext_record_xml(odr, rec_buf, rec_len);
676 npr = zget_surrogateDiagRec(
678 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
685 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
688 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
689 npr->databaseName = odr_database;
690 npr->which = Z_NamePlusRecord_databaseRecord;
691 npr->u.databaseRecord = ext;
695 npr = zget_surrogateDiagRec(
697 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
698 "ZOOM_record, type ext");
701 npl->records[i] = npr;
703 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
704 records->which = Z_Records_DBOSD;
705 records->u.databaseOrSurDiagnostics = npl;
711 void yf::Zoom::Frontend::handle_search(mp::Package &package)
713 Z_GDU *gdu = package.request().get();
714 Z_APDU *apdu_req = gdu->u.z3950;
715 Z_APDU *apdu_res = 0;
717 Z_SearchRequest *sr = apdu_req->u.searchRequest;
718 if (sr->num_databaseNames != 1)
720 apdu_res = odr.create_searchResponse(
721 apdu_req, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
722 package.response() = apdu_res;
727 const char *addinfo = 0;
728 std::string db(sr->databaseNames[0]);
729 BackendPtr b = get_backend_from_databases(db, &error, &addinfo);
733 odr.create_searchResponse(
734 apdu_req, error, addinfo);
735 package.response() = apdu_res;
739 b->set_option("setname", "default");
742 Z_Query *query = sr->query;
746 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
749 pqf_wrbuf = wrbuf_alloc();
750 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
752 else if (query->which == Z_Query_type_2)
755 ccl_wrbuf = wrbuf_alloc();
756 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
757 query->u.type_2->len);
759 else if (query->which == Z_Query_type_104 &&
760 query->u.type_104->which == Z_External_CQL)
763 const char *cql = query->u.type_104->u.cql;
764 CQL_parser cp = cql_parser_create();
765 int r = cql_parser_string(cp, cql);
768 cql_parser_destroy(cp);
770 odr.create_searchResponse(apdu_req,
771 YAZ_BIB1_MALFORMED_QUERY,
773 package.response() = apdu_res;
776 struct cql_node *cn = cql_parser_result(cp);
779 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
780 yaz_log(YLOG_LOG, "cql_to_ccl_buf returned %d", r);
783 ccl_wrbuf = wrbuf_alloc();
784 wrbuf_puts(ccl_wrbuf, ccl_buf);
786 cql_parser_destroy(cp);
790 odr.create_searchResponse(apdu_req,
791 YAZ_BIB1_MALFORMED_QUERY,
792 "CQL to CCL conversion error");
793 package.response() = apdu_res;
800 odr.create_searchResponse(apdu_req, YAZ_BIB1_QUERY_TYPE_UNSUPP, 0);
801 package.response() = apdu_res;
808 assert(pqf_wrbuf == 0);
810 struct ccl_rpn_node *cn;
811 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
813 wrbuf_destroy(ccl_wrbuf);
816 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
819 odr.create_searchResponse(apdu_req,
820 YAZ_BIB1_MALFORMED_QUERY,
822 package.response() = apdu_res;
825 pqf_wrbuf = wrbuf_alloc();
826 ccl_pquery(pqf_wrbuf, cn);
831 b->search_pqf(wrbuf_cstr(pqf_wrbuf), &hits, &error, &addinfo);
833 wrbuf_destroy(pqf_wrbuf);
835 const char *element_set_name = 0;
836 Odr_int number_to_present = 0;
838 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
840 Odr_int number_of_records_returned = 0;
841 Z_Records *records = get_records(
842 0, number_to_present, &error, &addinfo,
843 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
845 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
848 apdu_res->u.searchResponse->records = records;
849 apdu_res->u.searchResponse->numberOfRecordsReturned =
850 odr_intdup(odr, number_of_records_returned);
852 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
853 package.response() = apdu_res;
856 void yf::Zoom::Frontend::handle_present(mp::Package &package)
858 Z_GDU *gdu = package.request().get();
859 Z_APDU *apdu_req = gdu->u.z3950;
860 Z_APDU *apdu_res = 0;
861 Z_PresentRequest *pr = apdu_req->u.presentRequest;
866 package.response() = odr.create_presentResponse(
867 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
870 const char *element_set_name = 0;
871 Z_RecordComposition *comp = pr->recordComposition;
872 if (comp && comp->which != Z_RecordComp_simple)
874 package.response() = odr.create_presentResponse(
876 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
879 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
880 element_set_name = comp->u.simple->u.generic;
881 Odr_int number_of_records_returned = 0;
883 const char *addinfo = 0;
884 Z_Records *records = get_records(
885 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
886 &error, &addinfo, &number_of_records_returned, odr, m_backend,
887 pr->preferredRecordSyntax, element_set_name);
889 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
892 apdu_res->u.presentResponse->records = records;
893 apdu_res->u.presentResponse->numberOfRecordsReturned =
894 odr_intdup(odr, number_of_records_returned);
896 package.response() = apdu_res;
899 void yf::Zoom::Frontend::handle_package(mp::Package &package)
901 Z_GDU *gdu = package.request().get();
904 else if (gdu->which == Z_GDU_Z3950)
906 Z_APDU *apdu_req = gdu->u.z3950;
907 if (apdu_req->which == Z_APDU_initRequest)
910 package.response() = odr.create_close(
912 Z_Close_protocolError,
915 else if (apdu_req->which == Z_APDU_searchRequest)
917 handle_search(package);
919 else if (apdu_req->which == Z_APDU_presentRequest)
921 handle_present(package);
926 package.response() = odr.create_close(
928 Z_Close_protocolError,
929 "zoom filter cannot handle this APDU");
930 package.session().close();
935 package.session().close();
939 void yf::Zoom::Impl::process(mp::Package &package)
941 FrontendPtr f = get_frontend(package);
942 Z_GDU *gdu = package.request().get();
946 f->handle_package(package);
948 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
951 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
955 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
956 Z_InitResponse *resp = apdu->u.initResponse;
959 static const int masks[] = {
964 for (i = 0; masks[i] != -1; i++)
965 if (ODR_MASK_GET(req->options, masks[i]))
966 ODR_MASK_SET(resp->options, masks[i]);
968 static const int versions[] = {
974 for (i = 0; versions[i] != -1; i++)
975 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
976 ODR_MASK_SET(resp->protocolVersion, versions[i]);
980 *resp->preferredMessageSize = *req->preferredMessageSize;
981 *resp->maximumRecordSize = *req->maximumRecordSize;
983 package.response() = apdu;
984 f->m_is_virtual = true;
989 release_frontend(package);
993 static mp::filter::Base* filter_creator()
995 return new mp::filter::Zoom;
999 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1010 * c-file-style: "Stroustrup"
1011 * indent-tabs-mode: nil
1013 * vim: shiftwidth=4 tabstop=8 expandtab