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
22 #include <sys/types.h>
23 #include "filter_zoom.hpp"
24 #include <metaproxy/package.hpp>
25 #include <metaproxy/util.hpp>
26 #include <metaproxy/xmlutil.hpp>
29 #include <libxslt/xsltutils.h>
30 #include <libxslt/transform.h>
32 #include <boost/thread/mutex.hpp>
33 #include <boost/thread/condition.hpp>
35 #include <yaz/yaz-version.h>
36 #include <yaz/tpath.h>
38 #include <yaz/ccl_xml.h>
40 #include <yaz/rpn2cql.h>
41 #include <yaz/rpn2solr.h>
42 #include <yaz/pquery.h>
44 #include <yaz/oid_db.h>
45 #include <yaz/diagbib1.h>
48 #include <yaz/querytowrbuf.h>
49 #include <yaz/sortspec.h>
50 #include <yaz/tokenizer.h>
53 namespace mp = metaproxy_1;
54 namespace yf = mp::filter;
56 namespace metaproxy_1 {
58 class Zoom::Searchable : boost::noncopyable {
60 std::string authentication;
66 std::string query_encoding;
68 std::string sru_version;
69 std::string request_syntax;
70 std::string element_set;
71 std::string record_encoding;
72 std::string transform_xsl_fname;
73 std::string transform_xsl_content;
74 std::string urlRecipe;
75 std::string contentConnector;
76 std::string sortStrategy;
79 CCL_bibset ccl_bibset;
80 std::map<std::string, std::string> sortmap;
81 Searchable(CCL_bibset base);
84 class Zoom::Backend : boost::noncopyable {
86 friend class Frontend;
89 ZOOM_connection m_connection;
90 ZOOM_resultset m_resultset;
91 std::string m_frontend_database;
93 xsltStylesheetPtr xsp;
94 std::string content_session_id;
96 Backend(SearchablePtr sptr);
98 void connect(std::string zurl, int *error, char **addinfo,
100 void search(ZOOM_query q, Odr_int *hits,
101 int *error, char **addinfo, ODR odr);
102 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
103 int *error, char **addinfo, ODR odr);
104 void set_option(const char *name, const char *value);
105 void set_option(const char *name, std::string value);
106 const char *get_option(const char *name);
107 void get_zoom_error(int *error, char **addinfo, ODR odr);
109 class Zoom::Frontend : boost::noncopyable {
114 yazpp_1::GDU m_init_gdu;
115 BackendPtr m_backend;
116 void handle_package(mp::Package &package);
117 void handle_search(mp::Package &package);
118 void handle_present(mp::Package &package);
119 BackendPtr get_backend_from_databases(mp::Package &package,
120 std::string &database,
126 bool create_content_session(mp::Package &package,
131 std::string authentication,
134 void prepare_elements(BackendPtr b,
135 Odr_oid *preferredRecordSyntax,
136 const char *element_set_name,
137 bool &enable_pz2_retrieval,
138 bool &enable_pz2_transform,
139 bool &assume_marc8_charset);
141 Z_Records *get_records(Package &package,
143 Odr_int number_to_present,
146 Odr_int *number_of_records_returned,
147 ODR odr, BackendPtr b,
148 Odr_oid *preferredRecordSyntax,
149 const char *element_set_name);
151 void log_diagnostic(mp::Package &package,
152 int error, const char *addinfo);
154 Frontend(Impl *impl);
158 friend class Frontend;
162 void process(metaproxy_1::Package & package);
163 void configure(const xmlNode * ptr, bool test_only,
166 void configure_local_records(const xmlNode * ptr, bool test_only);
167 FrontendPtr get_frontend(mp::Package &package);
168 void release_frontend(mp::Package &package);
169 SearchablePtr parse_torus_record(const xmlNode *ptr);
170 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
171 std::map<mp::Session, FrontendPtr> m_clients;
172 boost::mutex m_mutex;
173 boost::condition m_cond_session_ready;
174 std::string torus_searchable_url;
175 std::string torus_content_url;
176 std::string default_realm;
177 std::map<std::string,std::string> fieldmap;
179 std::string file_path;
180 std::string content_proxy_server;
181 std::string content_tmp_file;
184 std::string element_transform;
185 std::string element_raw;
187 std::map<std::string,SearchablePtr> s_map;
192 // define Pimpl wrapper forwarding to Impl
194 yf::Zoom::Zoom() : m_p(new Impl)
199 { // must have a destructor because of boost::scoped_ptr
202 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only,
205 m_p->configure(xmlnode, test_only, path);
208 void yf::Zoom::process(mp::Package &package) const
210 m_p->process(package);
214 // define Implementation stuff
216 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
218 m_apdu_wrbuf = wrbuf_alloc();
219 m_connection = ZOOM_connection_create(0);
220 ZOOM_connection_save_apdu_wrbuf(m_connection, m_apdu_wrbuf);
225 yf::Zoom::Backend::~Backend()
228 xsltFreeStylesheet(xsp);
229 ZOOM_connection_destroy(m_connection);
230 ZOOM_resultset_destroy(m_resultset);
234 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
238 const char *zoom_addinfo = 0;
239 const char *dset = 0;
240 int error0 = ZOOM_connection_error_x(m_connection, &msg,
241 &zoom_addinfo, &dset);
247 if (!strcmp(dset, "info:srw/diagnostic/1"))
248 *error = yaz_diag_srw_to_bib1(error0);
249 else if (!strcmp(dset, "Bib-1"))
252 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
254 *addinfo = (char *) odr_malloc(
255 odr, 30 + strlen(dset) + strlen(msg) +
256 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
258 if (zoom_addinfo && *zoom_addinfo)
260 strcpy(*addinfo, zoom_addinfo);
261 strcat(*addinfo, " ");
263 sprintf(*addinfo + strlen(*addinfo), "(%s %d %s)", dset, error0, msg);
267 void yf::Zoom::Backend::connect(std::string zurl,
268 int *error, char **addinfo,
271 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
272 get_zoom_error(error, addinfo, odr);
275 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
276 int *error, char **addinfo, ODR odr)
278 m_resultset = ZOOM_connection_search(m_connection, q);
279 get_zoom_error(error, addinfo, odr);
281 *hits = ZOOM_resultset_size(m_resultset);
286 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
288 int *error, char **addinfo, ODR odr)
290 ZOOM_resultset_records(m_resultset, recs, start, number);
291 get_zoom_error(error, addinfo, odr);
294 void yf::Zoom::Backend::set_option(const char *name, const char *value)
296 ZOOM_connection_option_set(m_connection, name, value);
298 ZOOM_resultset_option_set(m_resultset, name, value);
301 void yf::Zoom::Backend::set_option(const char *name, std::string value)
303 set_option(name, value.c_str());
306 const char *yf::Zoom::Backend::get_option(const char *name)
308 return ZOOM_connection_option_get(m_connection, name);
311 yf::Zoom::Searchable::Searchable(CCL_bibset base)
314 use_turbomarc = true;
315 sortStrategy = "embed";
316 urlRecipe = "${md-electronic-url}";
317 ccl_bibset = ccl_qual_dup(base);
320 yf::Zoom::Searchable::~Searchable()
322 ccl_qual_rm(&ccl_bibset);
325 yf::Zoom::Frontend::Frontend(Impl *impl) :
326 m_p(impl), m_is_virtual(false), m_in_use(true)
330 yf::Zoom::Frontend::~Frontend()
334 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
336 boost::mutex::scoped_lock lock(m_mutex);
338 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
342 it = m_clients.find(package.session());
343 if (it == m_clients.end())
346 if (!it->second->m_in_use)
348 it->second->m_in_use = true;
351 m_cond_session_ready.wait(lock);
353 FrontendPtr f(new Frontend(this));
354 m_clients[package.session()] = f;
359 void yf::Zoom::Impl::release_frontend(mp::Package &package)
361 boost::mutex::scoped_lock lock(m_mutex);
362 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
364 it = m_clients.find(package.session());
365 if (it != m_clients.end())
367 if (package.session().is_closed())
373 it->second->m_in_use = false;
375 m_cond_session_ready.notify_all();
379 yf::Zoom::Impl::Impl() :
380 apdu_log(false), element_transform("pz2") , element_raw("raw")
382 bibset = ccl_qual_mk();
384 srand((unsigned int) time(0));
387 yf::Zoom::Impl::~Impl()
389 ccl_qual_rm(&bibset);
392 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
394 Zoom::SearchablePtr s(new Searchable(bibset));
396 for (ptr = ptr->children; ptr; ptr = ptr->next)
398 if (ptr->type != XML_ELEMENT_NODE)
400 if (!strcmp((const char *) ptr->name, "layer"))
402 else if (!strcmp((const char *) ptr->name,
405 s->authentication = mp::xml::get_text(ptr);
407 else if (!strcmp((const char *) ptr->name,
410 s->cfAuth = mp::xml::get_text(ptr);
412 else if (!strcmp((const char *) ptr->name,
415 s->cfProxy = mp::xml::get_text(ptr);
417 else if (!strcmp((const char *) ptr->name,
420 s->cfSubDB = mp::xml::get_text(ptr);
422 else if (!strcmp((const char *) ptr->name,
425 s->contentConnector = mp::xml::get_text(ptr);
427 else if (!strcmp((const char *) ptr->name, "udb"))
429 s->udb = mp::xml::get_text(ptr);
431 else if (!strcmp((const char *) ptr->name, "zurl"))
433 s->target = mp::xml::get_text(ptr);
435 else if (!strcmp((const char *) ptr->name, "sru"))
437 s->sru = mp::xml::get_text(ptr);
439 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
440 !strcmp((const char *) ptr->name, "sruVersion"))
442 s->sru_version = mp::xml::get_text(ptr);
444 else if (!strcmp((const char *) ptr->name,
447 s->query_encoding = mp::xml::get_text(ptr);
449 else if (!strcmp((const char *) ptr->name,
452 s->piggyback = mp::xml::get_bool(ptr, true);
454 else if (!strcmp((const char *) ptr->name,
457 s->request_syntax = mp::xml::get_text(ptr);
459 else if (!strcmp((const char *) ptr->name,
462 s->element_set = mp::xml::get_text(ptr);
464 else if (!strcmp((const char *) ptr->name,
467 s->record_encoding = mp::xml::get_text(ptr);
469 else if (!strcmp((const char *) ptr->name,
472 s->transform_xsl_fname = mp::xml::get_text(ptr);
474 else if (!strcmp((const char *) ptr->name,
477 s->transform_xsl_content = mp::xml::get_text(ptr);
479 else if (!strcmp((const char *) ptr->name,
482 s->urlRecipe = mp::xml::get_text(ptr);
484 else if (!strcmp((const char *) ptr->name,
487 ; // useTurboMarc is ignored
489 else if (!strncmp((const char *) ptr->name,
492 std::string value = mp::xml::get_text(ptr);
493 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
494 (const char *) ptr->name + 7);
496 else if (!strncmp((const char *) ptr->name,
499 std::string value = mp::xml::get_text(ptr);
500 s->sortmap[(const char *) ptr->name + 8] = value;
502 else if (!strcmp((const char *) ptr->name,
505 s->sortStrategy = mp::xml::get_text(ptr);
511 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
513 while (ptr && ptr->type != XML_ELEMENT_NODE)
518 if (!strcmp((const char *) ptr->name, "records"))
520 for (ptr = ptr->children; ptr; ptr = ptr->next)
522 if (ptr->type != XML_ELEMENT_NODE)
524 if (!strcmp((const char *) ptr->name, "record"))
526 SearchablePtr s = parse_torus_record(ptr);
529 std::string udb = s->udb;
534 throw mp::filter::FilterException
535 ("No udb for local torus record");
541 throw mp::filter::FilterException
543 + std::string((const char *) ptr->name)
544 + " in zoom filter inside element "
551 throw mp::filter::FilterException
553 + std::string((const char *) ptr->name)
554 + " in zoom filter inside element <torus>");
559 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
562 content_tmp_file = "/tmp/cf.XXXXXX.p";
567 for (ptr = ptr->children; ptr; ptr = ptr->next)
569 if (ptr->type != XML_ELEMENT_NODE)
571 else if (!strcmp((const char *) ptr->name, "torus"))
573 const struct _xmlAttr *attr;
574 for (attr = ptr->properties; attr; attr = attr->next)
576 if (!strcmp((const char *) attr->name, "url"))
577 torus_searchable_url = mp::xml::get_text(attr->children);
578 else if (!strcmp((const char *) attr->name, "content_url"))
579 torus_content_url = mp::xml::get_text(attr->children);
580 else if (!strcmp((const char *) attr->name, "realm"))
581 default_realm = mp::xml::get_text(attr->children);
582 else if (!strcmp((const char *) attr->name, "xsldir"))
583 xsldir = mp::xml::get_text(attr->children);
584 else if (!strcmp((const char *) attr->name, "element_transform"))
585 element_transform = mp::xml::get_text(attr->children);
586 else if (!strcmp((const char *) attr->name, "element_raw"))
587 element_raw = mp::xml::get_text(attr->children);
588 else if (!strcmp((const char *) attr->name, "proxy"))
589 proxy = mp::xml::get_text(attr->children);
591 throw mp::filter::FilterException(
592 "Bad attribute " + std::string((const char *)
595 // If content_url is not given, use value of searchable, to
596 // ensure backwards compatibility
597 if (!torus_content_url.length())
598 torus_content_url = torus_searchable_url;
599 configure_local_records(ptr->children, test_only);
601 else if (!strcmp((const char *) ptr->name, "cclmap"))
603 const char *addinfo = 0;
604 ccl_xml_config(bibset, ptr, &addinfo);
606 else if (!strcmp((const char *) ptr->name, "fieldmap"))
608 const struct _xmlAttr *attr;
609 std::string ccl_field;
610 std::string cql_field;
611 for (attr = ptr->properties; attr; attr = attr->next)
613 if (!strcmp((const char *) attr->name, "ccl"))
614 ccl_field = mp::xml::get_text(attr->children);
615 else if (!strcmp((const char *) attr->name, "cql"))
616 cql_field = mp::xml::get_text(attr->children);
618 throw mp::filter::FilterException(
619 "Bad attribute " + std::string((const char *)
622 if (cql_field.length())
623 fieldmap[cql_field] = ccl_field;
625 else if (!strcmp((const char *) ptr->name, "contentProxy"))
627 const struct _xmlAttr *attr;
628 for (attr = ptr->properties; attr; attr = attr->next)
630 if (!strcmp((const char *) attr->name, "server"))
631 content_proxy_server = mp::xml::get_text(attr->children);
632 else if (!strcmp((const char *) attr->name, "tmp_file"))
633 content_tmp_file = mp::xml::get_text(attr->children);
635 throw mp::filter::FilterException(
636 "Bad attribute " + std::string((const char *)
640 else if (!strcmp((const char *) ptr->name, "log"))
642 const struct _xmlAttr *attr;
643 for (attr = ptr->properties; attr; attr = attr->next)
645 if (!strcmp((const char *) attr->name, "apdu"))
646 apdu_log = mp::xml::get_bool(attr->children, false);
648 throw mp::filter::FilterException(
649 "Bad attribute " + std::string((const char *)
655 throw mp::filter::FilterException
657 + std::string((const char *) ptr->name)
658 + " in zoom filter");
663 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
665 int *error, char **addinfo,
667 std::string authentication,
670 if (b->sptr->contentConnector.length())
672 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
673 strcpy(fname, m_p->content_tmp_file.c_str());
674 char *xx = strstr(fname, "XXXXXX");
677 xx = fname + strlen(fname);
678 strcat(fname, "XXXXXX");
680 char tmp_char = xx[6];
681 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
684 FILE *file = fopen(fname, "w");
687 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
688 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
689 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
690 sprintf(*addinfo, "Could not create %s", fname);
694 b->content_session_id.assign(xx, 6);
695 WRBUF w = wrbuf_alloc();
696 wrbuf_puts(w, "#content_proxy\n");
697 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
698 if (authentication.length())
699 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
701 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
703 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
705 package.log("zoom", YLOG_LOG, "content file: %s", fname);
711 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
712 mp::Package &package,
713 std::string &database, int *error, char **addinfo, ODR odr,
716 std::list<BackendPtr>::const_iterator map_it;
717 if (m_backend && m_backend->m_frontend_database == database)
720 std::string input_args;
721 std::string torus_db;
722 size_t db_arg_pos = database.find(',');
723 if (db_arg_pos != std::string::npos)
725 torus_db = database.substr(0, db_arg_pos);
726 input_args = database.substr(db_arg_pos + 1);
731 std::string authentication;
732 std::string content_authentication;
734 std::string content_proxy;
735 std::string realm = m_p->default_realm;
737 const char *param_user = 0;
738 const char *param_password = 0;
739 const char *param_content_user = 0;
740 const char *param_content_password = 0;
746 if (input_args.length())
747 no_parms = yaz_uri_to_array(input_args.c_str(),
748 odr, &names, &values);
749 // adding 10 because we'll be adding other URL args
750 const char **out_names = (const char **)
751 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
752 const char **out_values = (const char **)
753 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
755 // may be changed if it's a content connection
756 std::string torus_url = m_p->torus_searchable_url;
758 for (i = 0; i < no_parms; i++)
760 const char *name = names[i];
761 const char *value = values[i];
764 if (!strcmp(name, "user"))
766 else if (!strcmp(name, "password"))
767 param_password = value;
768 else if (!strcmp(name, "content-user"))
769 param_content_user = value;
770 else if (!strcmp(name, "content-password"))
771 param_content_password = value;
772 else if (!strcmp(name, "content-proxy"))
773 content_proxy = value;
774 else if (!strcmp(name, "proxy"))
778 nmem_strsplit(odr->mem, ",", value, &dstr, &dnum);
779 if (*proxy_step >= dnum)
783 proxy = dstr[*proxy_step];
786 if (*proxy_step == dnum)
790 else if (!strcmp(name, "cproxysession"))
792 out_names[no_out_args] = name;
793 out_values[no_out_args++] = value;
794 torus_url = m_p->torus_content_url;
796 else if (!strcmp(name, "realm"))
798 else if (name[0] == 'x' && name[1] == '-')
800 out_names[no_out_args] = name;
801 out_values[no_out_args++] = value;
806 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
807 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
808 sprintf(msg, "Bad database argument: %s", name);
815 authentication = std::string(param_user);
817 authentication += "/" + std::string(param_password);
819 if (param_content_user)
821 content_authentication = std::string(param_content_user);
822 if (param_content_password)
823 content_authentication += "/" + std::string(param_content_password);
827 std::map<std::string,SearchablePtr>::iterator it;
828 it = m_p->s_map.find(torus_db);
829 if (it != m_p->s_map.end())
831 else if (torus_url.length() > 0)
833 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
837 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
838 *addinfo = odr_strdup(odr, database.c_str());
842 const xmlNode *ptr = xmlDocGetRootElement(doc);
844 { // presumably ptr is a records element node
845 // parse first record in document
846 for (ptr = ptr->children; ptr; ptr = ptr->next)
848 if (ptr->type == XML_ELEMENT_NODE
849 && !strcmp((const char *) ptr->name, "record"))
853 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
854 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
855 sprintf(*addinfo, "multiple records for udb=%s",
861 sptr = m_p->parse_torus_record(ptr);
870 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
871 *addinfo = odr_strdup(odr, database.c_str());
876 xsltStylesheetPtr xsp = 0;
877 if (sptr->transform_xsl_content.length())
879 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
880 sptr->transform_xsl_content.length());
883 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
884 *addinfo = (char *) odr_malloc(odr, 40);
885 sprintf(*addinfo, "xmlParseMemory failed");
889 xsp = xsltParseStylesheetDoc(xsp_doc);
892 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
893 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
899 else if (sptr->transform_xsl_fname.length())
901 const char *path = 0;
903 if (m_p->xsldir.length())
904 path = m_p->xsldir.c_str();
906 path = m_p->file_path.c_str();
910 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
916 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
918 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
919 sprintf(*addinfo, "File could not be read: %s",
920 sptr->transform_xsl_fname.c_str());
924 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
927 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
928 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
929 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
933 xsp = xsltParseStylesheetDoc(xsp_doc);
936 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
937 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
946 BackendPtr b(new Backend(sptr));
949 b->m_frontend_database = database;
951 if (sptr->query_encoding.length())
952 b->set_option("rpnCharset", sptr->query_encoding);
954 b->set_option("timeout", "40");
957 b->set_option("apdulog", "1");
959 if (sptr->piggyback && sptr->sru.length())
960 b->set_option("count", "1"); /* some SRU servers INSIST on getting
961 maximumRecords > 0 */
962 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
964 if (authentication.length() == 0)
965 authentication = sptr->authentication;
967 if (proxy.length() == 0)
968 proxy = sptr->cfProxy;
970 if (sptr->cfAuth.length())
973 b->set_option("user", sptr->cfAuth);
974 if (authentication.length())
976 size_t found = authentication.find('/');
977 if (found != std::string::npos)
979 out_names[no_out_args] = "user";
980 out_values[no_out_args++] =
981 odr_strdup(odr, authentication.substr(0, found).c_str());
983 out_names[no_out_args] = "password";
984 out_values[no_out_args++] =
985 odr_strdup(odr, authentication.substr(found+1).c_str());
989 out_names[no_out_args] = "user";
990 out_values[no_out_args++] =
991 odr_strdup(odr, authentication.c_str());
996 out_names[no_out_args] = "proxy";
997 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
999 if (sptr->cfSubDB.length())
1001 out_names[no_out_args] = "subdatabase";
1002 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1007 size_t found = authentication.find('/');
1009 if (sptr->sru.length() && found != std::string::npos)
1011 b->set_option("user", authentication.substr(0, found));
1012 b->set_option("password", authentication.substr(found+1));
1015 b->set_option("user", authentication);
1018 b->set_option("proxy", proxy);
1021 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1024 if (sptr->sru.length())
1026 url = "http://" + sptr->target;
1027 b->set_option("sru", sptr->sru);
1029 if (sptr->sru_version.length())
1030 b->set_option("sru_version", sptr->sru_version);
1039 out_names[no_out_args] = 0; // terminate list
1041 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1042 (char **) out_values);
1043 url += "," + std::string(x_args);
1045 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1046 b->connect(url, error, addinfo, odr);
1048 create_content_session(package, b, error, addinfo, odr,
1049 content_authentication.length() ?
1050 content_authentication : authentication,
1051 content_proxy.length() ? content_proxy : proxy);
1057 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1058 Odr_oid *preferredRecordSyntax,
1059 const char *element_set_name,
1060 bool &enable_pz2_retrieval,
1061 bool &enable_pz2_transform,
1062 bool &assume_marc8_charset)
1065 char oid_name_str[OID_STR_MAX];
1066 const char *syntax_name = 0;
1068 if (preferredRecordSyntax &&
1069 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1070 && element_set_name)
1072 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1074 enable_pz2_retrieval = true;
1075 enable_pz2_transform = true;
1077 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1079 enable_pz2_retrieval = true;
1083 if (enable_pz2_retrieval)
1085 std::string configured_request_syntax = b->sptr->request_syntax;
1086 if (configured_request_syntax.length())
1088 syntax_name = configured_request_syntax.c_str();
1089 const Odr_oid *syntax_oid =
1090 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1091 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1092 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1093 assume_marc8_charset = true;
1096 else if (preferredRecordSyntax)
1098 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1100 if (b->sptr->sru.length())
1101 syntax_name = "XML";
1103 b->set_option("preferredRecordSyntax", syntax_name);
1105 if (enable_pz2_retrieval)
1107 element_set_name = 0;
1108 if (b->sptr->element_set.length())
1109 element_set_name = b->sptr->element_set.c_str();
1112 b->set_option("elementSetName", element_set_name);
1113 if (b->sptr->sru.length() && element_set_name)
1114 b->set_option("schema", element_set_name);
1117 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1119 Odr_int number_to_present,
1122 Odr_int *number_of_records_returned,
1125 Odr_oid *preferredRecordSyntax,
1126 const char *element_set_name)
1128 *number_of_records_returned = 0;
1129 Z_Records *records = 0;
1130 bool enable_pz2_retrieval = false; // whether target profile is used
1131 bool enable_pz2_transform = false; // whether XSLT is used as well
1132 bool assume_marc8_charset = false;
1134 prepare_elements(b, preferredRecordSyntax,
1136 enable_pz2_retrieval,
1137 enable_pz2_transform,
1138 assume_marc8_charset);
1140 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1141 enable_pz2_retrieval ? "yes" : "no",
1142 enable_pz2_transform ? "yes" : "no");
1144 if (start < 0 || number_to_present <=0)
1147 if (number_to_present > 10000)
1148 number_to_present = 10000;
1150 ZOOM_record *recs = (ZOOM_record *)
1151 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1153 b->present(start, number_to_present, recs, error, addinfo, odr);
1158 for (i = 0; i < number_to_present; i++)
1163 { // only return records if no error and at least one record
1164 char *odr_database = odr_strdup(odr,
1165 b->m_frontend_database.c_str());
1166 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1167 odr_malloc(odr, sizeof(*npl));
1168 *number_of_records_returned = i;
1169 npl->num_records = i;
1170 npl->records = (Z_NamePlusRecord **)
1171 odr_malloc(odr, i * sizeof(*npl->records));
1172 for (i = 0; i < number_to_present; i++)
1174 Z_NamePlusRecord *npr = 0;
1175 const char *addinfo;
1177 package.log("zoom", YLOG_LOG, "Inspecting record at position %d",
1179 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1180 &addinfo, 0 /* diagset */);
1184 log_diagnostic(package, sur_error, addinfo);
1185 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1188 else if (enable_pz2_retrieval)
1190 char rec_type_str[100];
1191 const char *record_encoding = 0;
1193 if (b->sptr->record_encoding.length())
1194 record_encoding = b->sptr->record_encoding.c_str();
1195 else if (assume_marc8_charset)
1196 record_encoding = "marc8";
1198 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1199 if (record_encoding)
1201 strcat(rec_type_str, "; charset=");
1202 strcat(rec_type_str, record_encoding);
1205 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1208 xmlChar *xmlrec_buf = 0;
1209 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1211 if (!rec_buf && !npr)
1213 std::string addinfo("ZOOM_record_get failed for type ");
1215 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1216 addinfo += rec_type_str;
1217 log_diagnostic(package, error, addinfo.c_str());
1218 npr = zget_surrogateDiagRec(odr, odr_database,
1219 error, addinfo.c_str());
1223 package.log_write(rec_buf, rec_len);
1224 package.log_write("\r\n", 2);
1227 if (rec_buf && b->xsp && enable_pz2_transform)
1229 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1232 const char *addinfo = "xml parse failed for record";
1233 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1234 log_diagnostic(package, error, addinfo);
1235 npr = zget_surrogateDiagRec(
1236 odr, odr_database, error, addinfo);
1241 xsltApplyStylesheet(b->xsp, rec_doc, 0);
1245 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1247 rec_buf = (const char *) xmlrec_buf;
1248 package.log("zoom", YLOG_LOG, "xslt successful");
1249 package.log_write(rec_buf, rec_len);
1251 xmlFreeDoc(rec_res);
1255 std::string addinfo;
1257 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1259 addinfo = "xslt apply failed for "
1260 + b->sptr->transform_xsl_fname;
1261 log_diagnostic(package, error, addinfo.c_str());
1262 npr = zget_surrogateDiagRec(
1263 odr, odr_database, error, addinfo.c_str());
1265 xmlFreeDoc(rec_doc);
1271 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1273 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1274 if (res.length() && b->content_session_id.length())
1276 size_t off = res.find_first_of("://");
1277 if (off != std::string::npos)
1280 sprintf(tmp, "%s.%s/",
1281 b->content_session_id.c_str(),
1282 m_p->content_proxy_server.c_str());
1283 res.insert(off + 3, tmp);
1288 xmlNode *ptr = xmlDocGetRootElement(doc);
1289 while (ptr && ptr->type != XML_ELEMENT_NODE)
1292 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1293 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1295 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1299 xmlFree(xmlrec_buf);
1301 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1302 rec_buf = (const char *) xmlrec_buf;
1309 npr = zget_surrogateDiagRec(
1311 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1315 npr = (Z_NamePlusRecord *)
1316 odr_malloc(odr, sizeof(*npr));
1317 npr->databaseName = odr_database;
1318 npr->which = Z_NamePlusRecord_databaseRecord;
1319 npr->u.databaseRecord =
1320 z_ext_record_xml(odr, rec_buf, rec_len);
1324 xmlFree(xmlrec_buf);
1329 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1332 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1333 npr->databaseName = odr_database;
1334 npr->which = Z_NamePlusRecord_databaseRecord;
1335 npr->u.databaseRecord = ext;
1339 npr = zget_surrogateDiagRec(
1341 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1342 "ZOOM_record, type ext");
1345 npl->records[i] = npr;
1347 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1348 records->which = Z_Records_DBOSD;
1349 records->u.databaseOrSurDiagnostics = npl;
1354 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1357 struct cql_node *r = 0;
1365 std::map<std::string,std::string>::const_iterator it;
1366 it = fieldmap.find(cn->u.st.index);
1367 if (it == fieldmap.end())
1369 if (it->second.length())
1370 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1376 r = convert_cql_fields(cn->u.boolean.left, odr);
1378 r = convert_cql_fields(cn->u.boolean.right, odr);
1381 r = convert_cql_fields(cn->u.sort.search, odr);
1387 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1388 int error, const char *addinfo)
1390 const char *err_msg = yaz_diag_bib1_str(error);
1392 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1393 error, err_msg, addinfo);
1395 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1399 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1401 Z_GDU *gdu = package.request().get();
1402 Z_APDU *apdu_req = gdu->u.z3950;
1403 Z_APDU *apdu_res = 0;
1405 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1406 if (sr->num_databaseNames != 1)
1408 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
1409 log_diagnostic(package, error, 0);
1410 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
1411 package.response() = apdu_res;
1421 std::string db(sr->databaseNames[0]);
1423 BackendPtr b = get_backend_from_databases(package, db, &error,
1424 &addinfo, odr, &proxy_step);
1425 if (error && proxy_step)
1427 package.log("zoom", YLOG_WARN,
1428 "create backend failed: trying next proxy");
1433 log_diagnostic(package, error, addinfo);
1434 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1435 package.response() = apdu_res;
1439 b->set_option("setname", "default");
1441 bool enable_pz2_retrieval = false;
1442 bool enable_pz2_transform = false;
1443 bool assume_marc8_charset = false;
1444 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1445 enable_pz2_retrieval,
1446 enable_pz2_transform,
1447 assume_marc8_charset);
1450 Z_Query *query = sr->query;
1451 WRBUF ccl_wrbuf = 0;
1452 WRBUF pqf_wrbuf = 0;
1453 std::string sortkeys;
1455 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1458 pqf_wrbuf = wrbuf_alloc();
1459 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1461 else if (query->which == Z_Query_type_2)
1464 ccl_wrbuf = wrbuf_alloc();
1465 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1466 query->u.type_2->len);
1468 else if (query->which == Z_Query_type_104 &&
1469 query->u.type_104->which == Z_External_CQL)
1472 const char *cql = query->u.type_104->u.cql;
1473 CQL_parser cp = cql_parser_create();
1474 int r = cql_parser_string(cp, cql);
1475 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1478 cql_parser_destroy(cp);
1479 error = YAZ_BIB1_MALFORMED_QUERY;
1480 const char *addinfo = "CQL syntax error";
1481 log_diagnostic(package, error, addinfo);
1483 odr.create_searchResponse(apdu_req, error, addinfo);
1484 package.response() = apdu_res;
1487 struct cql_node *cn = cql_parser_result(cp);
1488 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1491 // hopefully we are getting a ptr to a index+relation+term node
1492 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1494 if (cn_error->which == CQL_NODE_ST)
1495 addinfo = cn_error->u.st.index;
1497 log_diagnostic(package, error, addinfo);
1498 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1499 package.response() = apdu_res;
1504 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1507 ccl_wrbuf = wrbuf_alloc();
1508 wrbuf_puts(ccl_wrbuf, ccl_buf);
1510 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1512 cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf);
1513 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1514 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1516 wrbuf_destroy(sru_sortkeys_wrbuf);
1518 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1519 yaz_tok_parse_t tp =
1520 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1521 yaz_tok_cfg_destroy(tc);
1523 /* go through sortspec and map fields */
1524 int token = yaz_tok_move(tp);
1525 while (token != YAZ_TOK_EOF)
1527 if (token == YAZ_TOK_STRING)
1529 const char *field = yaz_tok_parse_string(tp);
1530 std::map<std::string,std::string>::iterator it;
1531 it = b->sptr->sortmap.find(field);
1532 if (it != b->sptr->sortmap.end())
1533 sortkeys += it->second;
1538 token = yaz_tok_move(tp);
1539 if (token == YAZ_TOK_STRING)
1541 sortkeys += yaz_tok_parse_string(tp);
1543 if (token != YAZ_TOK_EOF)
1546 token = yaz_tok_move(tp);
1549 yaz_tok_parse_destroy(tp);
1550 wrbuf_destroy(sort_spec_wrbuf);
1552 cql_parser_destroy(cp);
1555 error = YAZ_BIB1_MALFORMED_QUERY;
1556 const char *addinfo = "CQL to CCL conversion error";
1558 log_diagnostic(package, error, addinfo);
1559 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1560 package.response() = apdu_res;
1566 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1567 const char *addinfo = 0;
1568 log_diagnostic(package, error, addinfo);
1569 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1570 package.response() = apdu_res;
1577 assert(pqf_wrbuf == 0);
1579 struct ccl_rpn_node *cn;
1580 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1581 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1583 wrbuf_destroy(ccl_wrbuf);
1586 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1587 error = YAZ_BIB1_MALFORMED_QUERY;
1591 case CCL_ERR_UNKNOWN_QUAL:
1592 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1594 case CCL_ERR_TRUNC_NOT_LEFT:
1595 case CCL_ERR_TRUNC_NOT_RIGHT:
1596 case CCL_ERR_TRUNC_NOT_BOTH:
1597 error = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1600 log_diagnostic(package, error, addinfo);
1601 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1602 package.response() = apdu_res;
1605 pqf_wrbuf = wrbuf_alloc();
1606 ccl_pquery(pqf_wrbuf, cn);
1607 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1613 ZOOM_query q = ZOOM_query_create();
1614 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1616 if (b->get_option("sru"))
1620 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1621 WRBUF wrb = wrbuf_alloc();
1623 if (!strcmp(b->get_option("sru"), "solr"))
1625 solr_transform_t cqlt = solr_transform_create();
1627 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1629 solr_transform_close(cqlt);
1633 cql_transform_t cqlt = cql_transform_create();
1635 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1637 cql_transform_close(cqlt);
1641 ZOOM_query_cql(q, wrbuf_cstr(wrb));
1642 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
1643 b->search(q, &hits, &error, &addinfo, odr);
1645 ZOOM_query_destroy(q);
1648 wrbuf_destroy(pqf_wrbuf);
1651 error = YAZ_BIB1_MALFORMED_QUERY;
1652 const char *addinfo = "can not convert from RPN to CQL/SOLR";
1653 log_diagnostic(package, error, addinfo);
1654 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1655 package.response() = apdu_res;
1661 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
1662 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1663 b->search(q, &hits, &error, &addinfo, odr);
1664 ZOOM_query_destroy(q);
1665 wrbuf_destroy(pqf_wrbuf);
1668 if (error && proxy_step)
1670 // reset below prevent reuse in get_backend_from_databases
1672 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
1676 const char *element_set_name = 0;
1677 Odr_int number_to_present = 0;
1679 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1681 Odr_int number_of_records_returned = 0;
1682 Z_Records *records = get_records(
1684 0, number_to_present, &error, &addinfo,
1685 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1688 log_diagnostic(package, error, addinfo);
1689 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1692 apdu_res->u.searchResponse->records = records;
1693 apdu_res->u.searchResponse->numberOfRecordsReturned =
1694 odr_intdup(odr, number_of_records_returned);
1696 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1697 package.response() = apdu_res;
1700 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1702 Z_GDU *gdu = package.request().get();
1703 Z_APDU *apdu_req = gdu->u.z3950;
1704 Z_APDU *apdu_res = 0;
1705 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1710 package.response() = odr.create_presentResponse(
1711 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1714 const char *element_set_name = 0;
1715 Z_RecordComposition *comp = pr->recordComposition;
1716 if (comp && comp->which != Z_RecordComp_simple)
1718 package.response() = odr.create_presentResponse(
1720 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1723 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1724 element_set_name = comp->u.simple->u.generic;
1725 Odr_int number_of_records_returned = 0;
1728 Z_Records *records = get_records(package,
1729 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1730 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1731 pr->preferredRecordSyntax, element_set_name);
1733 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1736 apdu_res->u.presentResponse->records = records;
1737 apdu_res->u.presentResponse->numberOfRecordsReturned =
1738 odr_intdup(odr, number_of_records_returned);
1740 package.response() = apdu_res;
1743 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1745 Z_GDU *gdu = package.request().get();
1748 else if (gdu->which == Z_GDU_Z3950)
1750 Z_APDU *apdu_req = gdu->u.z3950;
1753 wrbuf_rewind(m_backend->m_apdu_wrbuf);
1754 if (apdu_req->which == Z_APDU_initRequest)
1757 package.response() = odr.create_close(
1759 Z_Close_protocolError,
1762 else if (apdu_req->which == Z_APDU_searchRequest)
1764 handle_search(package);
1766 else if (apdu_req->which == Z_APDU_presentRequest)
1768 handle_present(package);
1773 package.response() = odr.create_close(
1775 Z_Close_protocolError,
1776 "zoom filter cannot handle this APDU");
1777 package.session().close();
1781 WRBUF w = m_backend->m_apdu_wrbuf;
1782 package.log_write(wrbuf_buf(w), wrbuf_len(w));
1787 package.session().close();
1791 void yf::Zoom::Impl::process(mp::Package &package)
1793 FrontendPtr f = get_frontend(package);
1794 Z_GDU *gdu = package.request().get();
1796 if (f->m_is_virtual)
1798 f->handle_package(package);
1800 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1803 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1804 f->m_init_gdu = gdu;
1807 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1808 Z_InitResponse *resp = apdu->u.initResponse;
1811 static const int masks[] = {
1816 for (i = 0; masks[i] != -1; i++)
1817 if (ODR_MASK_GET(req->options, masks[i]))
1818 ODR_MASK_SET(resp->options, masks[i]);
1820 static const int versions[] = {
1821 Z_ProtocolVersion_1,
1822 Z_ProtocolVersion_2,
1823 Z_ProtocolVersion_3,
1826 for (i = 0; versions[i] != -1; i++)
1827 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1828 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1832 *resp->preferredMessageSize = *req->preferredMessageSize;
1833 *resp->maximumRecordSize = *req->maximumRecordSize;
1835 package.response() = apdu;
1836 f->m_is_virtual = true;
1841 release_frontend(package);
1845 static mp::filter::Base* filter_creator()
1847 return new mp::filter::Zoom;
1851 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1862 * c-file-style: "Stroustrup"
1863 * indent-tabs-mode: nil
1865 * vim: shiftwidth=4 tabstop=8 expandtab