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;
741 const char *param_nocproxy = 0;
747 if (input_args.length())
748 no_parms = yaz_uri_to_array(input_args.c_str(),
749 odr, &names, &values);
750 // adding 10 because we'll be adding other URL args
751 const char **out_names = (const char **)
752 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
753 const char **out_values = (const char **)
754 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
756 // may be changed if it's a content connection
757 std::string torus_url = m_p->torus_searchable_url;
759 for (i = 0; i < no_parms; i++)
761 const char *name = names[i];
762 const char *value = values[i];
765 if (!strcmp(name, "user"))
767 else if (!strcmp(name, "password"))
768 param_password = value;
769 else if (!strcmp(name, "content-user"))
770 param_content_user = value;
771 else if (!strcmp(name, "content-password"))
772 param_content_password = value;
773 else if (!strcmp(name, "content-proxy"))
774 content_proxy = value;
775 else if (!strcmp(name, "nocproxy"))
776 param_nocproxy = value;
777 else if (!strcmp(name, "proxy"))
781 nmem_strsplit(odr->mem, ",", value, &dstr, &dnum);
782 if (*proxy_step >= dnum)
786 proxy = dstr[*proxy_step];
789 if (*proxy_step == dnum)
793 else if (!strcmp(name, "cproxysession"))
795 out_names[no_out_args] = name;
796 out_values[no_out_args++] = value;
797 torus_url = m_p->torus_content_url;
799 else if (!strcmp(name, "realm"))
801 else if (name[0] == 'x' && name[1] == '-')
803 out_names[no_out_args] = name;
804 out_values[no_out_args++] = value;
809 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
810 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
811 sprintf(msg, "Bad database argument: %s", name);
818 authentication = std::string(param_user);
820 authentication += "/" + std::string(param_password);
822 if (param_content_user)
824 content_authentication = std::string(param_content_user);
825 if (param_content_password)
826 content_authentication += "/" + std::string(param_content_password);
830 std::map<std::string,SearchablePtr>::iterator it;
831 it = m_p->s_map.find(torus_db);
832 if (it != m_p->s_map.end())
834 else if (torus_url.length() > 0)
836 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
840 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
841 *addinfo = odr_strdup(odr, database.c_str());
845 const xmlNode *ptr = xmlDocGetRootElement(doc);
847 { // presumably ptr is a records element node
848 // parse first record in document
849 for (ptr = ptr->children; ptr; ptr = ptr->next)
851 if (ptr->type == XML_ELEMENT_NODE
852 && !strcmp((const char *) ptr->name, "record"))
856 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
857 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
858 sprintf(*addinfo, "multiple records for udb=%s",
864 sptr = m_p->parse_torus_record(ptr);
873 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
874 *addinfo = odr_strdup(odr, database.c_str());
879 xsltStylesheetPtr xsp = 0;
880 if (sptr->transform_xsl_content.length())
882 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
883 sptr->transform_xsl_content.length());
886 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
887 *addinfo = (char *) odr_malloc(odr, 40);
888 sprintf(*addinfo, "xmlParseMemory failed");
892 xsp = xsltParseStylesheetDoc(xsp_doc);
895 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
896 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
902 else if (sptr->transform_xsl_fname.length())
904 const char *path = 0;
906 if (m_p->xsldir.length())
907 path = m_p->xsldir.c_str();
909 path = m_p->file_path.c_str();
913 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
919 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
921 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
922 sprintf(*addinfo, "File could not be read: %s",
923 sptr->transform_xsl_fname.c_str());
927 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
930 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
931 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
932 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
936 xsp = xsltParseStylesheetDoc(xsp_doc);
939 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
940 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
949 BackendPtr b(new Backend(sptr));
952 b->m_frontend_database = database;
954 if (sptr->query_encoding.length())
955 b->set_option("rpnCharset", sptr->query_encoding);
957 b->set_option("timeout", "40");
960 b->set_option("apdulog", "1");
962 if (sptr->piggyback && sptr->sru.length())
963 b->set_option("count", "1"); /* some SRU servers INSIST on getting
964 maximumRecords > 0 */
965 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
967 if (authentication.length() == 0)
968 authentication = sptr->authentication;
970 if (proxy.length() == 0)
971 proxy = sptr->cfProxy;
973 if (sptr->cfAuth.length())
976 b->set_option("user", sptr->cfAuth);
977 if (authentication.length())
979 size_t found = authentication.find('/');
980 if (found != std::string::npos)
982 out_names[no_out_args] = "user";
983 out_values[no_out_args++] =
984 odr_strdup(odr, authentication.substr(0, found).c_str());
986 out_names[no_out_args] = "password";
987 out_values[no_out_args++] =
988 odr_strdup(odr, authentication.substr(found+1).c_str());
992 out_names[no_out_args] = "user";
993 out_values[no_out_args++] =
994 odr_strdup(odr, authentication.c_str());
999 out_names[no_out_args] = "proxy";
1000 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1002 if (sptr->cfSubDB.length())
1004 out_names[no_out_args] = "subdatabase";
1005 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1009 out_names[no_out_args] = "nocproxy";
1010 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1015 size_t found = authentication.find('/');
1017 if (sptr->sru.length() && found != std::string::npos)
1019 b->set_option("user", authentication.substr(0, found));
1020 b->set_option("password", authentication.substr(found+1));
1023 b->set_option("user", authentication);
1026 b->set_option("proxy", proxy);
1029 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1032 if (sptr->sru.length())
1034 url = "http://" + sptr->target;
1035 b->set_option("sru", sptr->sru);
1037 if (sptr->sru_version.length())
1038 b->set_option("sru_version", sptr->sru_version);
1047 out_names[no_out_args] = 0; // terminate list
1049 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1050 (char **) out_values);
1051 url += "," + std::string(x_args);
1053 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1054 b->connect(url, error, addinfo, odr);
1055 if (*error == 0 && !param_nocproxy)
1056 create_content_session(package, b, error, addinfo, odr,
1057 content_authentication.length() ?
1058 content_authentication : authentication,
1059 content_proxy.length() ? content_proxy : proxy);
1065 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1066 Odr_oid *preferredRecordSyntax,
1067 const char *element_set_name,
1068 bool &enable_pz2_retrieval,
1069 bool &enable_pz2_transform,
1070 bool &assume_marc8_charset)
1073 char oid_name_str[OID_STR_MAX];
1074 const char *syntax_name = 0;
1076 if (preferredRecordSyntax &&
1077 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1078 && element_set_name)
1080 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1082 enable_pz2_retrieval = true;
1083 enable_pz2_transform = true;
1085 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1087 enable_pz2_retrieval = true;
1091 if (enable_pz2_retrieval)
1093 std::string configured_request_syntax = b->sptr->request_syntax;
1094 if (configured_request_syntax.length())
1096 syntax_name = configured_request_syntax.c_str();
1097 const Odr_oid *syntax_oid =
1098 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1099 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1100 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1101 assume_marc8_charset = true;
1104 else if (preferredRecordSyntax)
1106 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1108 if (b->sptr->sru.length())
1109 syntax_name = "XML";
1111 b->set_option("preferredRecordSyntax", syntax_name);
1113 if (enable_pz2_retrieval)
1115 element_set_name = 0;
1116 if (b->sptr->element_set.length())
1117 element_set_name = b->sptr->element_set.c_str();
1120 b->set_option("elementSetName", element_set_name);
1121 if (b->sptr->sru.length() && element_set_name)
1122 b->set_option("schema", element_set_name);
1125 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1127 Odr_int number_to_present,
1130 Odr_int *number_of_records_returned,
1133 Odr_oid *preferredRecordSyntax,
1134 const char *element_set_name)
1136 *number_of_records_returned = 0;
1137 Z_Records *records = 0;
1138 bool enable_pz2_retrieval = false; // whether target profile is used
1139 bool enable_pz2_transform = false; // whether XSLT is used as well
1140 bool assume_marc8_charset = false;
1142 prepare_elements(b, preferredRecordSyntax,
1144 enable_pz2_retrieval,
1145 enable_pz2_transform,
1146 assume_marc8_charset);
1148 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1149 enable_pz2_retrieval ? "yes" : "no",
1150 enable_pz2_transform ? "yes" : "no");
1152 if (start < 0 || number_to_present <=0)
1155 if (number_to_present > 10000)
1156 number_to_present = 10000;
1158 ZOOM_record *recs = (ZOOM_record *)
1159 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1161 b->present(start, number_to_present, recs, error, addinfo, odr);
1166 for (i = 0; i < number_to_present; i++)
1171 { // only return records if no error and at least one record
1172 char *odr_database = odr_strdup(odr,
1173 b->m_frontend_database.c_str());
1174 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1175 odr_malloc(odr, sizeof(*npl));
1176 *number_of_records_returned = i;
1177 npl->num_records = i;
1178 npl->records = (Z_NamePlusRecord **)
1179 odr_malloc(odr, i * sizeof(*npl->records));
1180 for (i = 0; i < number_to_present; i++)
1182 Z_NamePlusRecord *npr = 0;
1183 const char *addinfo;
1185 package.log("zoom", YLOG_LOG, "Inspecting record at position %d",
1187 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1188 &addinfo, 0 /* diagset */);
1192 log_diagnostic(package, sur_error, addinfo);
1193 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1196 else if (enable_pz2_retrieval)
1198 char rec_type_str[100];
1199 const char *record_encoding = 0;
1201 if (b->sptr->record_encoding.length())
1202 record_encoding = b->sptr->record_encoding.c_str();
1203 else if (assume_marc8_charset)
1204 record_encoding = "marc8";
1206 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1207 if (record_encoding)
1209 strcat(rec_type_str, "; charset=");
1210 strcat(rec_type_str, record_encoding);
1213 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1216 xmlChar *xmlrec_buf = 0;
1217 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1219 if (!rec_buf && !npr)
1221 std::string addinfo("ZOOM_record_get failed for type ");
1223 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1224 addinfo += rec_type_str;
1225 log_diagnostic(package, error, addinfo.c_str());
1226 npr = zget_surrogateDiagRec(odr, odr_database,
1227 error, addinfo.c_str());
1231 package.log_write(rec_buf, rec_len);
1232 package.log_write("\r\n", 2);
1235 if (rec_buf && b->xsp && enable_pz2_transform)
1237 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1240 const char *addinfo = "xml parse failed for record";
1241 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1242 log_diagnostic(package, error, addinfo);
1243 npr = zget_surrogateDiagRec(
1244 odr, odr_database, error, addinfo);
1249 xsltApplyStylesheet(b->xsp, rec_doc, 0);
1253 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1255 rec_buf = (const char *) xmlrec_buf;
1256 package.log("zoom", YLOG_LOG, "xslt successful");
1257 package.log_write(rec_buf, rec_len);
1259 xmlFreeDoc(rec_res);
1263 std::string addinfo;
1265 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1267 addinfo = "xslt apply failed for "
1268 + b->sptr->transform_xsl_fname;
1269 log_diagnostic(package, error, addinfo.c_str());
1270 npr = zget_surrogateDiagRec(
1271 odr, odr_database, error, addinfo.c_str());
1273 xmlFreeDoc(rec_doc);
1279 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1281 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1282 if (res.length() && b->content_session_id.length())
1284 size_t off = res.find_first_of("://");
1285 if (off != std::string::npos)
1288 sprintf(tmp, "%s.%s/",
1289 b->content_session_id.c_str(),
1290 m_p->content_proxy_server.c_str());
1291 res.insert(off + 3, tmp);
1296 xmlNode *ptr = xmlDocGetRootElement(doc);
1297 while (ptr && ptr->type != XML_ELEMENT_NODE)
1300 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1301 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1303 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1307 xmlFree(xmlrec_buf);
1309 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1310 rec_buf = (const char *) xmlrec_buf;
1317 npr = zget_surrogateDiagRec(
1319 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1323 npr = (Z_NamePlusRecord *)
1324 odr_malloc(odr, sizeof(*npr));
1325 npr->databaseName = odr_database;
1326 npr->which = Z_NamePlusRecord_databaseRecord;
1327 npr->u.databaseRecord =
1328 z_ext_record_xml(odr, rec_buf, rec_len);
1332 xmlFree(xmlrec_buf);
1337 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1340 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1341 npr->databaseName = odr_database;
1342 npr->which = Z_NamePlusRecord_databaseRecord;
1343 npr->u.databaseRecord = ext;
1347 npr = zget_surrogateDiagRec(
1349 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1350 "ZOOM_record, type ext");
1353 npl->records[i] = npr;
1355 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1356 records->which = Z_Records_DBOSD;
1357 records->u.databaseOrSurDiagnostics = npl;
1362 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1365 struct cql_node *r = 0;
1373 std::map<std::string,std::string>::const_iterator it;
1374 it = fieldmap.find(cn->u.st.index);
1375 if (it == fieldmap.end())
1377 if (it->second.length())
1378 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1384 r = convert_cql_fields(cn->u.boolean.left, odr);
1386 r = convert_cql_fields(cn->u.boolean.right, odr);
1389 r = convert_cql_fields(cn->u.sort.search, odr);
1395 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1396 int error, const char *addinfo)
1398 const char *err_msg = yaz_diag_bib1_str(error);
1400 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1401 error, err_msg, addinfo);
1403 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1407 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1409 Z_GDU *gdu = package.request().get();
1410 Z_APDU *apdu_req = gdu->u.z3950;
1411 Z_APDU *apdu_res = 0;
1413 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1414 if (sr->num_databaseNames != 1)
1416 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
1417 log_diagnostic(package, error, 0);
1418 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
1419 package.response() = apdu_res;
1429 std::string db(sr->databaseNames[0]);
1431 BackendPtr b = get_backend_from_databases(package, db, &error,
1432 &addinfo, odr, &proxy_step);
1433 if (error && proxy_step)
1435 package.log("zoom", YLOG_WARN,
1436 "create backend failed: trying next proxy");
1441 log_diagnostic(package, error, addinfo);
1442 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1443 package.response() = apdu_res;
1447 b->set_option("setname", "default");
1449 bool enable_pz2_retrieval = false;
1450 bool enable_pz2_transform = false;
1451 bool assume_marc8_charset = false;
1452 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1453 enable_pz2_retrieval,
1454 enable_pz2_transform,
1455 assume_marc8_charset);
1458 Z_Query *query = sr->query;
1459 WRBUF ccl_wrbuf = 0;
1460 WRBUF pqf_wrbuf = 0;
1461 std::string sortkeys;
1463 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1466 pqf_wrbuf = wrbuf_alloc();
1467 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1469 else if (query->which == Z_Query_type_2)
1472 ccl_wrbuf = wrbuf_alloc();
1473 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1474 query->u.type_2->len);
1476 else if (query->which == Z_Query_type_104 &&
1477 query->u.type_104->which == Z_External_CQL)
1480 const char *cql = query->u.type_104->u.cql;
1481 CQL_parser cp = cql_parser_create();
1482 int r = cql_parser_string(cp, cql);
1483 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1486 cql_parser_destroy(cp);
1487 error = YAZ_BIB1_MALFORMED_QUERY;
1488 const char *addinfo = "CQL syntax error";
1489 log_diagnostic(package, error, addinfo);
1491 odr.create_searchResponse(apdu_req, error, addinfo);
1492 package.response() = apdu_res;
1495 struct cql_node *cn = cql_parser_result(cp);
1496 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1499 // hopefully we are getting a ptr to a index+relation+term node
1500 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1502 if (cn_error->which == CQL_NODE_ST)
1503 addinfo = cn_error->u.st.index;
1505 log_diagnostic(package, error, addinfo);
1506 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1507 package.response() = apdu_res;
1508 cql_parser_destroy(cp);
1512 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1515 error = YAZ_BIB1_MALFORMED_QUERY;
1516 const char *addinfo = "CQL to CCL conversion error";
1518 log_diagnostic(package, error, addinfo);
1519 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1520 package.response() = apdu_res;
1521 cql_parser_destroy(cp);
1525 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1526 if (cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf))
1528 error = YAZ_BIB1_ILLEGAL_SORT_RELATION;
1529 const char *addinfo = "CQL to CCL sortby conversion";
1531 log_diagnostic(package, error, addinfo);
1532 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1533 package.response() = apdu_res;
1534 wrbuf_destroy(sru_sortkeys_wrbuf);
1535 cql_parser_destroy(cp);
1538 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1539 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1541 wrbuf_destroy(sru_sortkeys_wrbuf);
1543 ccl_wrbuf = wrbuf_alloc();
1544 wrbuf_puts(ccl_wrbuf, ccl_buf);
1546 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1547 yaz_tok_parse_t tp =
1548 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1549 yaz_tok_cfg_destroy(tc);
1551 /* go through sortspec and map fields */
1552 int token = yaz_tok_move(tp);
1553 while (token != YAZ_TOK_EOF)
1555 if (token == YAZ_TOK_STRING)
1557 const char *field = yaz_tok_parse_string(tp);
1558 std::map<std::string,std::string>::iterator it;
1559 it = b->sptr->sortmap.find(field);
1560 if (it != b->sptr->sortmap.end())
1561 sortkeys += it->second;
1566 token = yaz_tok_move(tp);
1567 if (token == YAZ_TOK_STRING)
1569 sortkeys += yaz_tok_parse_string(tp);
1571 if (token != YAZ_TOK_EOF)
1574 token = yaz_tok_move(tp);
1577 yaz_tok_parse_destroy(tp);
1578 wrbuf_destroy(sort_spec_wrbuf);
1580 cql_parser_destroy(cp);
1584 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1585 const char *addinfo = 0;
1586 log_diagnostic(package, error, addinfo);
1587 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1588 package.response() = apdu_res;
1595 assert(pqf_wrbuf == 0);
1597 struct ccl_rpn_node *cn;
1598 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1599 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1601 wrbuf_destroy(ccl_wrbuf);
1604 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1605 error = YAZ_BIB1_MALFORMED_QUERY;
1609 case CCL_ERR_UNKNOWN_QUAL:
1610 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1612 case CCL_ERR_TRUNC_NOT_LEFT:
1613 case CCL_ERR_TRUNC_NOT_RIGHT:
1614 case CCL_ERR_TRUNC_NOT_BOTH:
1615 error = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1618 log_diagnostic(package, error, addinfo);
1619 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1620 package.response() = apdu_res;
1623 pqf_wrbuf = wrbuf_alloc();
1624 ccl_pquery(pqf_wrbuf, cn);
1625 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1631 ZOOM_query q = ZOOM_query_create();
1632 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1634 if (b->get_option("sru"))
1638 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1639 WRBUF wrb = wrbuf_alloc();
1641 if (!strcmp(b->get_option("sru"), "solr"))
1643 solr_transform_t cqlt = solr_transform_create();
1645 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1647 solr_transform_close(cqlt);
1651 cql_transform_t cqlt = cql_transform_create();
1653 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1655 cql_transform_close(cqlt);
1659 ZOOM_query_cql(q, wrbuf_cstr(wrb));
1660 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
1661 b->search(q, &hits, &error, &addinfo, odr);
1663 ZOOM_query_destroy(q);
1666 wrbuf_destroy(pqf_wrbuf);
1669 error = YAZ_BIB1_MALFORMED_QUERY;
1670 const char *addinfo = "can not convert from RPN to CQL/SOLR";
1671 log_diagnostic(package, error, addinfo);
1672 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1673 package.response() = apdu_res;
1679 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
1680 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1681 b->search(q, &hits, &error, &addinfo, odr);
1682 ZOOM_query_destroy(q);
1683 wrbuf_destroy(pqf_wrbuf);
1686 if (error && proxy_step)
1688 // reset below prevent reuse in get_backend_from_databases
1690 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
1694 const char *element_set_name = 0;
1695 Odr_int number_to_present = 0;
1697 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1699 Odr_int number_of_records_returned = 0;
1700 Z_Records *records = get_records(
1702 0, number_to_present, &error, &addinfo,
1703 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1706 log_diagnostic(package, error, addinfo);
1707 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1710 apdu_res->u.searchResponse->records = records;
1711 apdu_res->u.searchResponse->numberOfRecordsReturned =
1712 odr_intdup(odr, number_of_records_returned);
1714 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1715 package.response() = apdu_res;
1718 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1720 Z_GDU *gdu = package.request().get();
1721 Z_APDU *apdu_req = gdu->u.z3950;
1722 Z_APDU *apdu_res = 0;
1723 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1728 package.response() = odr.create_presentResponse(
1729 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1732 const char *element_set_name = 0;
1733 Z_RecordComposition *comp = pr->recordComposition;
1734 if (comp && comp->which != Z_RecordComp_simple)
1736 package.response() = odr.create_presentResponse(
1738 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1741 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1742 element_set_name = comp->u.simple->u.generic;
1743 Odr_int number_of_records_returned = 0;
1746 Z_Records *records = get_records(package,
1747 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1748 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1749 pr->preferredRecordSyntax, element_set_name);
1751 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1754 apdu_res->u.presentResponse->records = records;
1755 apdu_res->u.presentResponse->numberOfRecordsReturned =
1756 odr_intdup(odr, number_of_records_returned);
1758 package.response() = apdu_res;
1761 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1763 Z_GDU *gdu = package.request().get();
1766 else if (gdu->which == Z_GDU_Z3950)
1768 Z_APDU *apdu_req = gdu->u.z3950;
1771 wrbuf_rewind(m_backend->m_apdu_wrbuf);
1772 if (apdu_req->which == Z_APDU_initRequest)
1775 package.response() = odr.create_close(
1777 Z_Close_protocolError,
1780 else if (apdu_req->which == Z_APDU_searchRequest)
1782 handle_search(package);
1784 else if (apdu_req->which == Z_APDU_presentRequest)
1786 handle_present(package);
1791 package.response() = odr.create_close(
1793 Z_Close_protocolError,
1794 "zoom filter cannot handle this APDU");
1795 package.session().close();
1799 WRBUF w = m_backend->m_apdu_wrbuf;
1800 package.log_write(wrbuf_buf(w), wrbuf_len(w));
1805 package.session().close();
1809 void yf::Zoom::Impl::process(mp::Package &package)
1811 FrontendPtr f = get_frontend(package);
1812 Z_GDU *gdu = package.request().get();
1814 if (f->m_is_virtual)
1816 f->handle_package(package);
1818 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1821 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1822 f->m_init_gdu = gdu;
1825 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1826 Z_InitResponse *resp = apdu->u.initResponse;
1829 static const int masks[] = {
1834 for (i = 0; masks[i] != -1; i++)
1835 if (ODR_MASK_GET(req->options, masks[i]))
1836 ODR_MASK_SET(resp->options, masks[i]);
1838 static const int versions[] = {
1839 Z_ProtocolVersion_1,
1840 Z_ProtocolVersion_2,
1841 Z_ProtocolVersion_3,
1844 for (i = 0; versions[i] != -1; i++)
1845 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1846 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1850 *resp->preferredMessageSize = *req->preferredMessageSize;
1851 *resp->maximumRecordSize = *req->maximumRecordSize;
1853 package.response() = apdu;
1854 f->m_is_virtual = true;
1859 release_frontend(package);
1863 static mp::filter::Base* filter_creator()
1865 return new mp::filter::Zoom;
1869 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1880 * c-file-style: "Stroustrup"
1881 * indent-tabs-mode: nil
1883 * vim: shiftwidth=4 tabstop=8 expandtab