1 /* This file is part of Metaproxy.
2 Copyright (C) 2005-2012 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;
101 void connect(std::string zurl, int *error, char **addinfo,
103 void search(ZOOM_query q, Odr_int *hits,
104 int *error, char **addinfo, ODR odr);
105 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
106 int *error, char **addinfo, ODR odr);
107 void set_option(const char *name, const char *value);
108 void set_option(const char *name, std::string value);
109 const char *get_option(const char *name);
110 void get_zoom_error(int *error, char **addinfo, ODR odr);
112 class Zoom::Frontend : boost::noncopyable {
117 yazpp_1::GDU m_init_gdu;
118 BackendPtr m_backend;
119 void handle_package(mp::Package &package);
120 void handle_search(mp::Package &package);
122 BackendPtr explain_search(mp::Package &package,
123 std::string &database,
127 std::string &torus_db,
129 void handle_present(mp::Package &package);
130 BackendPtr get_backend_from_databases(mp::Package &package,
131 std::string &database,
137 bool create_content_session(mp::Package &package,
142 std::string authentication,
146 void prepare_elements(BackendPtr b,
147 Odr_oid *preferredRecordSyntax,
148 const char *element_set_name,
149 bool &enable_pz2_retrieval,
150 bool &enable_pz2_transform,
151 bool &enable_record_transform,
152 bool &assume_marc8_charset);
154 Z_Records *get_records(Package &package,
156 Odr_int number_to_present,
159 Odr_int *number_of_records_returned,
160 ODR odr, BackendPtr b,
161 Odr_oid *preferredRecordSyntax,
162 const char *element_set_name);
163 Z_Records *get_explain_records(Package &package,
165 Odr_int number_to_present,
168 Odr_int *number_of_records_returned,
169 ODR odr, BackendPtr b,
170 Odr_oid *preferredRecordSyntax,
171 const char *element_set_name);
173 void log_diagnostic(mp::Package &package,
174 int error, const char *addinfo);
176 Frontend(Impl *impl);
180 friend class Frontend;
184 void process(metaproxy_1::Package & package);
185 void configure(const xmlNode * ptr, bool test_only,
188 void configure_local_records(const xmlNode * ptr, bool test_only);
189 FrontendPtr get_frontend(mp::Package &package);
190 void release_frontend(mp::Package &package);
191 SearchablePtr parse_torus_record(const xmlNode *ptr);
192 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
193 std::map<mp::Session, FrontendPtr> m_clients;
194 boost::mutex m_mutex;
195 boost::condition m_cond_session_ready;
196 std::string torus_searchable_url;
197 std::string torus_content_url;
198 std::string default_realm;
199 std::map<std::string,std::string> fieldmap;
201 std::string file_path;
202 std::string content_proxy_server;
203 std::string content_tmp_file;
206 std::string element_transform;
207 std::string element_raw;
209 xsltStylesheetPtr explain_xsp;
210 xsltStylesheetPtr record_xsp;
211 std::map<std::string,SearchablePtr> s_map;
212 std::string zoom_timeout;
218 static xmlNode *xml_node_search(xmlNode *ptr, int *num, int m)
222 if (ptr->type == XML_ELEMENT_NODE &&
223 !strcmp((const char *) ptr->name, "recordData"))
229 else // else: we don't want to find nested nodes
231 xmlNode *ret_node = xml_node_search(ptr->children, num, m);
240 // define Pimpl wrapper forwarding to Impl
242 yf::Zoom::Zoom() : m_p(new Impl)
247 { // must have a destructor because of boost::scoped_ptr
250 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only,
253 m_p->configure(xmlnode, test_only, path);
256 void yf::Zoom::process(mp::Package &package) const
258 m_p->process(package);
262 // define Implementation stuff
264 yf::Zoom::Backend::Backend()
266 m_apdu_wrbuf = wrbuf_alloc();
267 m_connection = ZOOM_connection_create(0);
268 ZOOM_connection_save_apdu_wrbuf(m_connection, m_apdu_wrbuf);
271 enable_cproxy = true;
272 enable_explain = false;
276 yf::Zoom::Backend::~Backend()
279 xsltFreeStylesheet(xsp);
281 xmlFreeDoc(explain_doc);
282 ZOOM_connection_destroy(m_connection);
283 ZOOM_resultset_destroy(m_resultset);
284 wrbuf_destroy(m_apdu_wrbuf);
288 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
292 const char *zoom_addinfo = 0;
293 const char *dset = 0;
294 int error0 = ZOOM_connection_error_x(m_connection, &msg,
295 &zoom_addinfo, &dset);
301 if (!strcmp(dset, "info:srw/diagnostic/1"))
302 *error = yaz_diag_srw_to_bib1(error0);
303 else if (!strcmp(dset, "Bib-1"))
306 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
308 *addinfo = (char *) odr_malloc(
309 odr, 30 + strlen(dset) + strlen(msg) +
310 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
312 if (zoom_addinfo && *zoom_addinfo)
314 strcpy(*addinfo, zoom_addinfo);
315 strcat(*addinfo, " ");
317 sprintf(*addinfo + strlen(*addinfo), "(%s %d %s)", dset, error0, msg);
321 void yf::Zoom::Backend::connect(std::string zurl,
322 int *error, char **addinfo,
325 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
326 get_zoom_error(error, addinfo, odr);
329 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
330 int *error, char **addinfo, ODR odr)
332 ZOOM_resultset_destroy(m_resultset);
333 m_resultset = ZOOM_connection_search(m_connection, q);
334 get_zoom_error(error, addinfo, odr);
336 *hits = ZOOM_resultset_size(m_resultset);
341 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
343 int *error, char **addinfo, ODR odr)
345 ZOOM_resultset_records(m_resultset, recs, start, number);
346 get_zoom_error(error, addinfo, odr);
349 void yf::Zoom::Backend::set_option(const char *name, const char *value)
351 ZOOM_connection_option_set(m_connection, name, value);
353 ZOOM_resultset_option_set(m_resultset, name, value);
356 void yf::Zoom::Backend::set_option(const char *name, std::string value)
358 set_option(name, value.c_str());
361 const char *yf::Zoom::Backend::get_option(const char *name)
363 return ZOOM_connection_option_get(m_connection, name);
366 yf::Zoom::Searchable::Searchable(CCL_bibset base)
369 use_turbomarc = true;
370 sortStrategy = "embed";
371 urlRecipe = "${md-electronic-url}";
372 ccl_bibset = ccl_qual_dup(base);
375 yf::Zoom::Searchable::~Searchable()
377 ccl_qual_rm(&ccl_bibset);
380 yf::Zoom::Frontend::Frontend(Impl *impl) :
381 m_p(impl), m_is_virtual(false), m_in_use(true)
385 yf::Zoom::Frontend::~Frontend()
389 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
391 boost::mutex::scoped_lock lock(m_mutex);
393 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
397 it = m_clients.find(package.session());
398 if (it == m_clients.end())
401 if (!it->second->m_in_use)
403 it->second->m_in_use = true;
406 m_cond_session_ready.wait(lock);
408 FrontendPtr f(new Frontend(this));
409 m_clients[package.session()] = f;
414 void yf::Zoom::Impl::release_frontend(mp::Package &package)
416 boost::mutex::scoped_lock lock(m_mutex);
417 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
419 it = m_clients.find(package.session());
420 if (it != m_clients.end())
422 if (package.session().is_closed())
428 it->second->m_in_use = false;
430 m_cond_session_ready.notify_all();
434 yf::Zoom::Impl::Impl() :
435 apdu_log(false), element_transform("pz2") , element_raw("raw"),
438 bibset = ccl_qual_mk();
442 srand((unsigned int) time(0));
445 yf::Zoom::Impl::~Impl()
448 xsltFreeStylesheet(explain_xsp);
449 ccl_qual_rm(&bibset);
452 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
454 Zoom::SearchablePtr s(new Searchable(bibset));
456 for (ptr = ptr->children; ptr; ptr = ptr->next)
458 if (ptr->type != XML_ELEMENT_NODE)
460 if (!strcmp((const char *) ptr->name, "layer"))
462 else if (!strcmp((const char *) ptr->name,
465 s->authentication = mp::xml::get_text(ptr);
467 else if (!strcmp((const char *) ptr->name,
470 s->cfAuth = mp::xml::get_text(ptr);
472 else if (!strcmp((const char *) ptr->name,
475 s->cfProxy = mp::xml::get_text(ptr);
477 else if (!strcmp((const char *) ptr->name,
480 s->cfSubDB = mp::xml::get_text(ptr);
482 else if (!strcmp((const char *) ptr->name,
485 s->contentConnector = mp::xml::get_text(ptr);
487 else if (!strcmp((const char *) ptr->name, "udb"))
489 s->udb = mp::xml::get_text(ptr);
491 else if (!strcmp((const char *) ptr->name, "zurl"))
493 s->target = mp::xml::get_text(ptr);
495 else if (!strcmp((const char *) ptr->name, "sru"))
497 s->sru = mp::xml::get_text(ptr);
499 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
500 !strcmp((const char *) ptr->name, "sruVersion"))
502 s->sru_version = mp::xml::get_text(ptr);
504 else if (!strcmp((const char *) ptr->name,
507 s->query_encoding = mp::xml::get_text(ptr);
509 else if (!strcmp((const char *) ptr->name,
512 s->piggyback = mp::xml::get_bool(ptr, true);
514 else if (!strcmp((const char *) ptr->name,
517 s->request_syntax = mp::xml::get_text(ptr);
519 else if (!strcmp((const char *) ptr->name,
522 s->element_set = mp::xml::get_text(ptr);
524 else if (!strcmp((const char *) ptr->name,
527 s->record_encoding = mp::xml::get_text(ptr);
529 else if (!strcmp((const char *) ptr->name,
532 s->transform_xsl_fname = mp::xml::get_text(ptr);
534 else if (!strcmp((const char *) ptr->name,
537 s->transform_xsl_content = mp::xml::get_text(ptr);
539 else if (!strcmp((const char *) ptr->name,
542 s->urlRecipe = mp::xml::get_text(ptr);
544 else if (!strcmp((const char *) ptr->name,
547 ; // useTurboMarc is ignored
549 else if (!strncmp((const char *) ptr->name,
552 std::string value = mp::xml::get_text(ptr);
553 if (value.length() > 0)
555 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
556 (const char *) ptr->name + 7);
559 else if (!strncmp((const char *) ptr->name,
562 std::string value = mp::xml::get_text(ptr);
563 s->sortmap[(const char *) ptr->name + 8] = value;
565 else if (!strcmp((const char *) ptr->name,
568 s->sortStrategy = mp::xml::get_text(ptr);
574 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
576 while (ptr && ptr->type != XML_ELEMENT_NODE)
581 if (!strcmp((const char *) ptr->name, "records"))
583 for (ptr = ptr->children; ptr; ptr = ptr->next)
585 if (ptr->type != XML_ELEMENT_NODE)
587 if (!strcmp((const char *) ptr->name, "record"))
589 SearchablePtr s = parse_torus_record(ptr);
592 std::string udb = s->udb;
597 throw mp::filter::FilterException
598 ("No udb for local torus record");
604 throw mp::filter::FilterException
606 + std::string((const char *) ptr->name)
607 + " in zoom filter inside element "
614 throw mp::filter::FilterException
616 + std::string((const char *) ptr->name)
617 + " in zoom filter inside element <torus>");
622 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
625 std::string explain_xslt_fname;
626 std::string record_xslt_fname;
628 content_tmp_file = "/tmp/cf.XXXXXX.p";
633 for (ptr = ptr->children; ptr; ptr = ptr->next)
635 if (ptr->type != XML_ELEMENT_NODE)
637 else if (!strcmp((const char *) ptr->name, "torus"))
639 const struct _xmlAttr *attr;
640 for (attr = ptr->properties; attr; attr = attr->next)
642 if (!strcmp((const char *) attr->name, "url"))
643 torus_searchable_url = mp::xml::get_text(attr->children);
644 else if (!strcmp((const char *) attr->name, "content_url"))
645 torus_content_url = mp::xml::get_text(attr->children);
646 else if (!strcmp((const char *) attr->name, "realm"))
647 default_realm = mp::xml::get_text(attr->children);
648 else if (!strcmp((const char *) attr->name, "xsldir"))
649 xsldir = mp::xml::get_text(attr->children);
650 else if (!strcmp((const char *) attr->name, "element_transform"))
651 element_transform = mp::xml::get_text(attr->children);
652 else if (!strcmp((const char *) attr->name, "element_raw"))
653 element_raw = mp::xml::get_text(attr->children);
654 else if (!strcmp((const char *) attr->name, "proxy"))
655 proxy = mp::xml::get_text(attr->children);
656 else if (!strcmp((const char *) attr->name, "explain_xsl"))
657 explain_xslt_fname = mp::xml::get_text(attr->children);
658 else if (!strcmp((const char *) attr->name, "record_xsl"))
659 record_xslt_fname = mp::xml::get_text(attr->children);
661 throw mp::filter::FilterException(
662 "Bad attribute " + std::string((const char *)
665 // If content_url is not given, use value of searchable, to
666 // ensure backwards compatibility
667 if (!torus_content_url.length())
668 torus_content_url = torus_searchable_url;
669 configure_local_records(ptr->children, test_only);
671 else if (!strcmp((const char *) ptr->name, "cclmap"))
673 const char *addinfo = 0;
674 ccl_xml_config(bibset, ptr, &addinfo);
676 else if (!strcmp((const char *) ptr->name, "fieldmap"))
678 const struct _xmlAttr *attr;
679 std::string ccl_field;
680 std::string cql_field;
681 for (attr = ptr->properties; attr; attr = attr->next)
683 if (!strcmp((const char *) attr->name, "ccl"))
684 ccl_field = mp::xml::get_text(attr->children);
685 else if (!strcmp((const char *) attr->name, "cql"))
686 cql_field = mp::xml::get_text(attr->children);
688 throw mp::filter::FilterException(
689 "Bad attribute " + std::string((const char *)
692 if (cql_field.length())
693 fieldmap[cql_field] = ccl_field;
695 else if (!strcmp((const char *) ptr->name, "contentProxy"))
697 const struct _xmlAttr *attr;
698 for (attr = ptr->properties; attr; attr = attr->next)
700 if (!strcmp((const char *) attr->name, "server"))
701 content_proxy_server = mp::xml::get_text(attr->children);
702 else if (!strcmp((const char *) attr->name, "tmp_file"))
703 content_tmp_file = mp::xml::get_text(attr->children);
705 throw mp::filter::FilterException(
706 "Bad attribute " + std::string((const char *)
710 else if (!strcmp((const char *) ptr->name, "log"))
712 const struct _xmlAttr *attr;
713 for (attr = ptr->properties; attr; attr = attr->next)
715 if (!strcmp((const char *) attr->name, "apdu"))
716 apdu_log = mp::xml::get_bool(attr->children, false);
718 throw mp::filter::FilterException(
719 "Bad attribute " + std::string((const char *)
723 else if (!strcmp((const char *) ptr->name, "zoom"))
725 const struct _xmlAttr *attr;
726 for (attr = ptr->properties; attr; attr = attr->next)
728 if (!strcmp((const char *) attr->name, "timeout"))
729 zoom_timeout = mp::xml::get_text(attr->children);
731 throw mp::filter::FilterException(
732 "Bad attribute " + std::string((const char *)
738 throw mp::filter::FilterException
740 + std::string((const char *) ptr->name)
741 + " in zoom filter");
745 if (explain_xslt_fname.length())
747 const char *path = 0;
750 path = xsldir.c_str();
752 path = file_path.c_str();
755 char *cp = yaz_filepath_resolve(explain_xslt_fname.c_str(),
759 throw mp::filter::FilterException
760 ("Cannot read XSLT " + explain_xslt_fname);
763 xmlDoc *xsp_doc = xmlParseFile(cp);
766 throw mp::filter::FilterException
767 ("Cannot parse XSLT " + explain_xslt_fname);
770 explain_xsp = xsltParseStylesheetDoc(xsp_doc);
774 throw mp::filter::FilterException
775 ("Cannot parse XSLT " + explain_xslt_fname);
780 if (record_xslt_fname.length())
782 const char *path = 0;
785 path = xsldir.c_str();
787 path = file_path.c_str();
790 char *cp = yaz_filepath_resolve(record_xslt_fname.c_str(),
794 throw mp::filter::FilterException
795 ("Cannot read XSLT " + record_xslt_fname);
798 xmlDoc *xsp_doc = xmlParseFile(cp);
801 throw mp::filter::FilterException
802 ("Cannot parse XSLT " + record_xslt_fname);
805 record_xsp = xsltParseStylesheetDoc(xsp_doc);
809 throw mp::filter::FilterException
810 ("Cannot parse XSLT " + record_xslt_fname);
816 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
818 int *error, char **addinfo,
820 std::string authentication,
824 if (b->sptr->contentConnector.length())
826 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
827 strcpy(fname, m_p->content_tmp_file.c_str());
828 char *xx = strstr(fname, "XXXXXX");
831 xx = fname + strlen(fname);
832 strcat(fname, "XXXXXX");
834 char tmp_char = xx[6];
835 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
838 FILE *file = fopen(fname, "w");
841 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
842 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
843 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
844 sprintf(*addinfo, "Could not create %s", fname);
848 b->content_session_id.assign(xx, 6);
849 WRBUF w = wrbuf_alloc();
850 wrbuf_puts(w, "#content_proxy\n");
851 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
852 if (authentication.length())
853 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
855 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
857 wrbuf_printf(w, "realm: %s\n", realm.c_str());
859 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
861 package.log("zoom", YLOG_LOG, "content file: %s", fname);
868 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
869 mp::Package &package,
870 std::string &database, int *error, char **addinfo, mp::odr &odr,
873 std::list<BackendPtr>::const_iterator map_it;
874 if (m_backend && !m_backend->enable_explain &&
875 m_backend->m_frontend_database == database)
878 std::string input_args;
879 std::string torus_db;
880 size_t db_arg_pos = database.find(',');
881 if (db_arg_pos != std::string::npos)
883 torus_db = database.substr(0, db_arg_pos);
884 input_args = database.substr(db_arg_pos + 1);
889 std::string authentication;
890 std::string content_authentication;
892 std::string content_proxy;
893 std::string realm = m_p->default_realm;
895 const char *param_user = 0;
896 const char *param_password = 0;
897 const char *param_content_user = 0;
898 const char *param_content_password = 0;
899 const char *param_nocproxy = 0;
905 if (input_args.length())
906 no_parms = yaz_uri_to_array(input_args.c_str(),
907 odr, &names, &values);
908 // adding 10 because we'll be adding other URL args
909 const char **out_names = (const char **)
910 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
911 const char **out_values = (const char **)
912 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
914 // may be changed if it's a content connection
915 std::string torus_url = m_p->torus_searchable_url;
917 for (i = 0; i < no_parms; i++)
919 const char *name = names[i];
920 const char *value = values[i];
923 if (!strcmp(name, "user"))
925 else if (!strcmp(name, "password"))
926 param_password = value;
927 else if (!strcmp(name, "content-user"))
928 param_content_user = value;
929 else if (!strcmp(name, "content-password"))
930 param_content_password = value;
931 else if (!strcmp(name, "content-proxy"))
932 content_proxy = value;
933 else if (!strcmp(name, "nocproxy"))
934 param_nocproxy = value;
935 else if (!strcmp(name, "proxy"))
939 nmem_strsplit(((ODR) odr)->mem, ",", value, &dstr, &dnum);
940 if (*proxy_step >= dnum)
944 proxy = dstr[*proxy_step];
947 if (*proxy_step == dnum)
951 else if (!strcmp(name, "cproxysession"))
953 out_names[no_out_args] = name;
954 out_values[no_out_args++] = value;
955 torus_url = m_p->torus_content_url;
957 else if (!strcmp(name, "realm"))
959 else if (name[0] == 'x' && name[1] == '-')
961 out_names[no_out_args] = name;
962 out_values[no_out_args++] = value;
967 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
968 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
969 sprintf(msg, "Bad database argument: %s", name);
976 authentication = std::string(param_user);
978 authentication += "/" + std::string(param_password);
980 if (param_content_user)
982 content_authentication = std::string(param_content_user);
983 if (param_content_password)
984 content_authentication += "/" + std::string(param_content_password);
987 if (torus_db.compare("IR-Explain---1") == 0)
988 return explain_search(package, database, error, addinfo, odr, torus_db,
993 std::map<std::string,SearchablePtr>::iterator it;
994 it = m_p->s_map.find(torus_db);
995 if (it != m_p->s_map.end())
997 else if (torus_url.length() > 0)
999 std::string torus_query = "udb==" + torus_db;
1000 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
1005 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1006 *addinfo = odr_strdup(odr, database.c_str());
1010 const xmlNode *ptr = xmlDocGetRootElement(doc);
1012 { // presumably ptr is a records element node
1013 // parse first record in document
1014 for (ptr = ptr->children; ptr; ptr = ptr->next)
1016 if (ptr->type == XML_ELEMENT_NODE
1017 && !strcmp((const char *) ptr->name, "record"))
1021 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1022 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
1023 sprintf(*addinfo, "multiple records for udb=%s",
1029 sptr = m_p->parse_torus_record(ptr);
1038 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1039 *addinfo = odr_strdup(odr, database.c_str());
1044 xsltStylesheetPtr xsp = 0;
1045 if (sptr->transform_xsl_content.length())
1047 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
1048 sptr->transform_xsl_content.length());
1051 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1052 *addinfo = (char *) odr_malloc(odr, 40);
1053 sprintf(*addinfo, "xmlParseMemory failed");
1057 xsp = xsltParseStylesheetDoc(xsp_doc);
1060 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1061 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
1063 xmlFreeDoc(xsp_doc);
1067 else if (sptr->transform_xsl_fname.length())
1069 const char *path = 0;
1071 if (m_p->xsldir.length())
1072 path = m_p->xsldir.c_str();
1074 path = m_p->file_path.c_str();
1077 char fullpath[1024];
1078 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
1084 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1086 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
1087 sprintf(*addinfo, "File could not be read: %s",
1088 sptr->transform_xsl_fname.c_str());
1092 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
1095 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1096 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
1097 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
1101 xsp = xsltParseStylesheetDoc(xsp_doc);
1104 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1105 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
1107 xmlFreeDoc(xsp_doc);
1114 BackendPtr b(new Backend);
1118 b->m_frontend_database = database;
1119 b->enable_cproxy = param_nocproxy ? false : true;
1121 if (sptr->query_encoding.length())
1122 b->set_option("rpnCharset", sptr->query_encoding);
1124 b->set_option("timeout", m_p->zoom_timeout.c_str());
1127 b->set_option("apdulog", "1");
1129 if (sptr->piggyback && sptr->sru.length())
1130 b->set_option("count", "1"); /* some SRU servers INSIST on getting
1131 maximumRecords > 0 */
1132 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
1134 if (authentication.length() == 0)
1135 authentication = sptr->authentication;
1137 if (proxy.length() == 0)
1138 proxy = sptr->cfProxy;
1140 if (sptr->cfAuth.length())
1143 b->set_option("user", sptr->cfAuth);
1144 if (authentication.length())
1146 size_t found = authentication.find('/');
1147 if (found != std::string::npos)
1149 out_names[no_out_args] = "user";
1150 out_values[no_out_args++] =
1151 odr_strdup(odr, authentication.substr(0, found).c_str());
1153 out_names[no_out_args] = "password";
1154 out_values[no_out_args++] =
1155 odr_strdup(odr, authentication.substr(found+1).c_str());
1159 out_names[no_out_args] = "user";
1160 out_values[no_out_args++] =
1161 odr_strdup(odr, authentication.c_str());
1166 out_names[no_out_args] = "proxy";
1167 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1169 if (sptr->cfSubDB.length())
1171 out_names[no_out_args] = "subdatabase";
1172 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1176 out_names[no_out_args] = "nocproxy";
1177 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1182 size_t found = authentication.find('/');
1184 if (sptr->sru.length() && found != std::string::npos)
1186 b->set_option("user", authentication.substr(0, found));
1187 b->set_option("password", authentication.substr(found+1));
1190 b->set_option("user", authentication);
1193 b->set_option("proxy", proxy);
1196 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1199 if (sptr->sru.length())
1201 url = "http://" + sptr->target;
1202 b->set_option("sru", sptr->sru);
1204 if (sptr->sru_version.length())
1205 b->set_option("sru_version", sptr->sru_version);
1214 out_names[no_out_args] = 0; // terminate list
1216 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1217 (char **) out_values);
1218 url += "," + std::string(x_args);
1220 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1221 b->connect(url, error, addinfo, odr);
1222 if (*error == 0 && b->enable_cproxy)
1223 create_content_session(package, b, error, addinfo, odr,
1224 content_authentication.length() ?
1225 content_authentication : authentication,
1226 content_proxy.length() ? content_proxy : proxy,
1233 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1234 Odr_oid *preferredRecordSyntax,
1235 const char *element_set_name,
1236 bool &enable_pz2_retrieval,
1237 bool &enable_pz2_transform,
1238 bool &enable_record_transform,
1239 bool &assume_marc8_charset)
1241 char oid_name_str[OID_STR_MAX];
1242 const char *syntax_name = 0;
1244 if (preferredRecordSyntax &&
1245 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1246 && element_set_name)
1248 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1250 enable_pz2_retrieval = true;
1251 enable_pz2_transform = true;
1253 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1255 enable_pz2_retrieval = true;
1259 enable_pz2_retrieval = true;
1260 enable_pz2_transform = true;
1261 enable_record_transform = true;
1265 if (enable_pz2_retrieval)
1267 std::string configured_request_syntax = b->sptr->request_syntax;
1268 if (configured_request_syntax.length())
1270 syntax_name = configured_request_syntax.c_str();
1271 const Odr_oid *syntax_oid =
1272 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1273 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1274 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1275 assume_marc8_charset = true;
1278 else if (preferredRecordSyntax)
1280 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1282 if (b->sptr->sru.length())
1283 syntax_name = "XML";
1285 b->set_option("preferredRecordSyntax", syntax_name);
1287 if (enable_pz2_retrieval)
1289 element_set_name = 0;
1290 if (b->sptr->element_set.length())
1291 element_set_name = b->sptr->element_set.c_str();
1294 b->set_option("elementSetName", element_set_name);
1295 if (b->sptr->sru.length() && element_set_name)
1296 b->set_option("schema", element_set_name);
1299 Z_Records *yf::Zoom::Frontend::get_explain_records(
1302 Odr_int number_to_present,
1305 Odr_int *number_of_records_returned,
1308 Odr_oid *preferredRecordSyntax,
1309 const char *element_set_name)
1312 Z_Records *records = 0;
1314 if (!b->explain_doc)
1318 if (number_to_present > 10000)
1319 number_to_present = 10000;
1321 xmlNode *ptr = xmlDocGetRootElement(b->explain_doc);
1323 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1324 odr_malloc(odr, sizeof(*npl));
1325 npl->records = (Z_NamePlusRecord **)
1326 odr_malloc(odr, number_to_present * sizeof(*npl->records));
1328 for (i = 0; i < number_to_present; i++)
1331 xmlNode *res = xml_node_search(ptr, &num, start + i + 1);
1334 xmlBufferPtr xml_buf = xmlBufferCreate();
1335 xmlNode *tmp_node = xmlCopyNode(res->children, 1);
1336 xmlNodeDump(xml_buf, tmp_node->doc, tmp_node, 0, 0);
1338 Z_NamePlusRecord *npr =
1339 (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1340 npr->databaseName = odr_strdup(odr, b->m_frontend_database.c_str());
1341 npr->which = Z_NamePlusRecord_databaseRecord;
1342 npr->u.databaseRecord =
1343 z_ext_record_xml(odr,
1344 (const char *) xml_buf->content, xml_buf->use);
1345 npl->records[i] = npr;
1346 xmlFreeNode(tmp_node);
1347 xmlBufferFree(xml_buf);
1349 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1350 records->which = Z_Records_DBOSD;
1351 records->u.databaseOrSurDiagnostics = npl;
1353 npl->num_records = i;
1354 *number_of_records_returned = i;
1359 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1361 Odr_int number_to_present,
1364 Odr_int *number_of_records_returned,
1367 Odr_oid *preferredRecordSyntax,
1368 const char *element_set_name)
1370 *number_of_records_returned = 0;
1371 Z_Records *records = 0;
1372 bool enable_pz2_retrieval = false; // whether target profile is used
1373 bool enable_pz2_transform = false; // whether XSLT is used as well
1374 bool assume_marc8_charset = false;
1375 bool enable_record_transform = false;
1377 prepare_elements(b, preferredRecordSyntax,
1379 enable_pz2_retrieval,
1380 enable_pz2_transform,
1381 enable_record_transform,
1382 assume_marc8_charset);
1384 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1385 enable_pz2_retrieval ? "yes" : "no",
1386 enable_pz2_transform ? "yes" : "no");
1388 if (start < 0 || number_to_present <=0)
1391 if (number_to_present > 10000)
1392 number_to_present = 10000;
1394 ZOOM_record *recs = (ZOOM_record *)
1395 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1397 b->present(start, number_to_present, recs, error, addinfo, odr);
1402 for (i = 0; i < number_to_present; i++)
1407 { // only return records if no error and at least one record
1409 const char *xsl_parms[3];
1410 char cproxy_host[1024];
1412 if (b->enable_cproxy && b->content_session_id.length())
1414 sprintf(cproxy_host, "%s.%s/",
1415 b->content_session_id.c_str(),
1416 m_p->content_proxy_server.c_str());
1418 char *q_cproxy_host = (char *)
1419 odr_malloc(odr, strlen(cproxy_host) + 3);
1420 strcpy(q_cproxy_host, "\"");
1421 strcat(q_cproxy_host, cproxy_host);
1422 strcat(q_cproxy_host, "\"");
1424 xsl_parms[0] = "cproxyhost";
1425 xsl_parms[1] = q_cproxy_host;
1431 *cproxy_host = '\0';
1434 char *odr_database = odr_strdup(odr,
1435 b->m_frontend_database.c_str());
1436 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1437 odr_malloc(odr, sizeof(*npl));
1438 *number_of_records_returned = i;
1439 npl->num_records = i;
1440 npl->records = (Z_NamePlusRecord **)
1441 odr_malloc(odr, i * sizeof(*npl->records));
1442 for (i = 0; i < number_to_present; i++)
1444 Z_NamePlusRecord *npr = 0;
1445 const char *addinfo;
1447 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1448 &addinfo, 0 /* diagset */);
1452 log_diagnostic(package, sur_error, addinfo);
1453 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1456 else if (enable_pz2_retrieval)
1458 char rec_type_str[100];
1459 const char *record_encoding = 0;
1461 if (b->sptr->record_encoding.length())
1462 record_encoding = b->sptr->record_encoding.c_str();
1463 else if (assume_marc8_charset)
1464 record_encoding = "marc8";
1466 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1467 if (record_encoding)
1469 strcat(rec_type_str, "; charset=");
1470 strcat(rec_type_str, record_encoding);
1473 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1476 xmlChar *xmlrec_buf = 0;
1477 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1479 if (!rec_buf && !npr)
1481 std::string addinfo("ZOOM_record_get failed for type ");
1483 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1484 addinfo += rec_type_str;
1485 log_diagnostic(package, error, addinfo.c_str());
1486 npr = zget_surrogateDiagRec(odr, odr_database,
1487 error, addinfo.c_str());
1491 package.log_write(rec_buf, rec_len);
1492 package.log_write("\r\n", 2);
1495 if (rec_buf && b->xsp && enable_pz2_transform)
1497 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1500 const char *addinfo = "xml parse failed for record";
1501 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1502 log_diagnostic(package, error, addinfo);
1503 npr = zget_surrogateDiagRec(
1504 odr, odr_database, error, addinfo);
1508 xsltStylesheetPtr xsp = b->xsp;
1509 xmlDoc *rec_res = xsltApplyStylesheet(xsp, rec_doc,
1511 if (rec_res && m_p->record_xsp &&
1512 enable_record_transform)
1514 xmlDoc *tmp_doc = rec_res;
1516 xsp = m_p->record_xsp;
1517 rec_res = xsltApplyStylesheet(xsp, tmp_doc,
1519 xmlFreeDoc(tmp_doc);
1523 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1525 rec_buf = (const char *) xmlrec_buf;
1526 package.log("zoom", YLOG_LOG, "xslt successful");
1527 package.log_write(rec_buf, rec_len);
1529 xmlFreeDoc(rec_res);
1533 std::string addinfo;
1535 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1537 addinfo = "xslt apply failed for "
1538 + b->sptr->transform_xsl_fname;
1539 log_diagnostic(package, error, addinfo.c_str());
1540 npr = zget_surrogateDiagRec(
1541 odr, odr_database, error, addinfo.c_str());
1543 xmlFreeDoc(rec_doc);
1549 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1551 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1552 if (res.length() && *cproxy_host)
1554 size_t off = res.find_first_of("://");
1555 if (off != std::string::npos)
1556 res.insert(off + 3, cproxy_host);
1560 xmlNode *ptr = xmlDocGetRootElement(doc);
1561 while (ptr && ptr->type != XML_ELEMENT_NODE)
1564 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1565 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1567 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1571 xmlFree(xmlrec_buf);
1573 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1574 rec_buf = (const char *) xmlrec_buf;
1581 npr = zget_surrogateDiagRec(
1583 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1587 npr = (Z_NamePlusRecord *)
1588 odr_malloc(odr, sizeof(*npr));
1589 npr->databaseName = odr_database;
1590 npr->which = Z_NamePlusRecord_databaseRecord;
1591 npr->u.databaseRecord =
1592 z_ext_record_xml(odr, rec_buf, rec_len);
1596 xmlFree(xmlrec_buf);
1601 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1604 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1605 npr->databaseName = odr_database;
1606 npr->which = Z_NamePlusRecord_databaseRecord;
1607 npr->u.databaseRecord = ext;
1611 npr = zget_surrogateDiagRec(
1613 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1614 "ZOOM_record, type ext");
1617 npl->records[i] = npr;
1619 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1620 records->which = Z_Records_DBOSD;
1621 records->u.databaseOrSurDiagnostics = npl;
1626 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1629 struct cql_node *r = 0;
1637 std::map<std::string,std::string>::const_iterator it;
1638 it = fieldmap.find(cn->u.st.index);
1639 if (it == fieldmap.end())
1641 if (it->second.length())
1642 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1648 r = convert_cql_fields(cn->u.boolean.left, odr);
1650 r = convert_cql_fields(cn->u.boolean.right, odr);
1653 r = convert_cql_fields(cn->u.sort.search, odr);
1659 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1660 int error, const char *addinfo)
1662 const char *err_msg = yaz_diag_bib1_str(error);
1664 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1665 error, err_msg, addinfo);
1667 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1671 yf::Zoom::BackendPtr yf::Zoom::Frontend::explain_search(mp::Package &package,
1672 std::string &database,
1676 std::string &torus_db,
1681 BackendPtr b(new Backend);
1683 b->m_frontend_database = database;
1684 b->enable_explain = true;
1686 Z_GDU *gdu = package.request().get();
1687 Z_APDU *apdu_req = gdu->u.z3950;
1688 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1689 Z_Query *query = sr->query;
1691 if (!m_p->explain_xsp)
1693 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1695 odr_strdup(odr, "IR-Explain---1 unsupported. "
1696 "Torus explain_xsl not defined");
1699 else if (query->which == Z_Query_type_104 &&
1700 query->u.type_104->which == Z_External_CQL)
1702 std::string torus_url = m_p->torus_searchable_url;
1703 std::string torus_query(query->u.type_104->u.cql);
1704 xmlDoc *doc = mp::get_searchable(package, torus_url, "",
1707 if (m_p->explain_xsp)
1709 xmlDoc *rec_res = xsltApplyStylesheet(m_p->explain_xsp, doc, 0);
1716 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1717 *addinfo = odr_strdup(odr, "IR-Explain---1 problem. "
1718 "Could not obtain Torus records for Explain");
1722 xmlNode *ptr = xmlDocGetRootElement(doc);
1725 xml_node_search(ptr, &hits, 0);
1727 Z_APDU *apdu_res = odr.create_searchResponse(apdu_req, 0, 0);
1728 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1729 package.response() = apdu_res;
1733 xmlFreeDoc(b->explain_doc);
1734 b->explain_doc = doc;
1739 *error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1740 *addinfo = odr_strdup(odr, "IR-Explain---1 only supports CQL");
1745 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1747 Z_GDU *gdu = package.request().get();
1748 Z_APDU *apdu_req = gdu->u.z3950;
1749 Z_APDU *apdu_res = 0;
1751 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1752 if (sr->num_databaseNames != 1)
1754 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
1755 log_diagnostic(package, error, 0);
1756 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
1757 package.response() = apdu_res;
1766 std::string db(sr->databaseNames[0]);
1768 BackendPtr b = get_backend_from_databases(package, db, &error,
1769 &addinfo, odr, &proxy_step);
1770 if (error && proxy_step)
1772 package.log("zoom", YLOG_WARN,
1773 "create backend failed: trying next proxy");
1778 log_diagnostic(package, error, addinfo);
1779 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1780 package.response() = apdu_res;
1783 if (!b || b->enable_explain)
1786 b->set_option("setname", "default");
1788 bool enable_pz2_retrieval = false;
1789 bool enable_pz2_transform = false;
1790 bool enable_record_transform = false;
1791 bool assume_marc8_charset = false;
1792 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1793 enable_pz2_retrieval,
1794 enable_pz2_transform,
1795 enable_record_transform,
1796 assume_marc8_charset);
1799 Z_Query *query = sr->query;
1800 WRBUF ccl_wrbuf = 0;
1801 WRBUF pqf_wrbuf = 0;
1802 std::string sortkeys;
1804 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1807 pqf_wrbuf = wrbuf_alloc();
1808 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1810 else if (query->which == Z_Query_type_2)
1813 ccl_wrbuf = wrbuf_alloc();
1814 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1815 query->u.type_2->len);
1817 else if (query->which == Z_Query_type_104 &&
1818 query->u.type_104->which == Z_External_CQL)
1821 const char *cql = query->u.type_104->u.cql;
1822 CQL_parser cp = cql_parser_create();
1823 int r = cql_parser_string(cp, cql);
1824 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1827 cql_parser_destroy(cp);
1828 error = YAZ_BIB1_MALFORMED_QUERY;
1829 const char *addinfo = "CQL syntax error";
1830 log_diagnostic(package, error, addinfo);
1832 odr.create_searchResponse(apdu_req, error, addinfo);
1833 package.response() = apdu_res;
1836 struct cql_node *cn = cql_parser_result(cp);
1837 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1840 // hopefully we are getting a ptr to a index+relation+term node
1841 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1843 if (cn_error->which == CQL_NODE_ST)
1844 addinfo = cn_error->u.st.index;
1846 log_diagnostic(package, error, addinfo);
1847 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1848 package.response() = apdu_res;
1849 cql_parser_destroy(cp);
1853 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1856 error = YAZ_BIB1_MALFORMED_QUERY;
1857 const char *addinfo = "CQL to CCL conversion error";
1859 log_diagnostic(package, error, addinfo);
1860 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1861 package.response() = apdu_res;
1862 cql_parser_destroy(cp);
1866 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1867 if (cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf))
1869 error = YAZ_BIB1_ILLEGAL_SORT_RELATION;
1870 const char *addinfo = "CQL to CCL sortby conversion";
1872 log_diagnostic(package, error, addinfo);
1873 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1874 package.response() = apdu_res;
1875 wrbuf_destroy(sru_sortkeys_wrbuf);
1876 cql_parser_destroy(cp);
1879 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1880 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1882 wrbuf_destroy(sru_sortkeys_wrbuf);
1884 ccl_wrbuf = wrbuf_alloc();
1885 wrbuf_puts(ccl_wrbuf, ccl_buf);
1887 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1888 yaz_tok_parse_t tp =
1889 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1890 yaz_tok_cfg_destroy(tc);
1892 /* go through sortspec and map fields */
1893 int token = yaz_tok_move(tp);
1894 while (token != YAZ_TOK_EOF)
1896 if (token == YAZ_TOK_STRING)
1898 const char *field = yaz_tok_parse_string(tp);
1899 std::map<std::string,std::string>::iterator it;
1900 it = b->sptr->sortmap.find(field);
1901 if (it != b->sptr->sortmap.end())
1902 sortkeys += it->second;
1907 token = yaz_tok_move(tp);
1908 if (token == YAZ_TOK_STRING)
1910 sortkeys += yaz_tok_parse_string(tp);
1912 if (token != YAZ_TOK_EOF)
1915 token = yaz_tok_move(tp);
1918 yaz_tok_parse_destroy(tp);
1919 wrbuf_destroy(sort_spec_wrbuf);
1921 cql_parser_destroy(cp);
1925 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1926 const char *addinfo = 0;
1927 log_diagnostic(package, error, addinfo);
1928 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1929 package.response() = apdu_res;
1936 assert(pqf_wrbuf == 0);
1938 struct ccl_rpn_node *cn;
1939 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1940 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1942 wrbuf_destroy(ccl_wrbuf);
1945 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1946 error = YAZ_BIB1_MALFORMED_QUERY;
1950 case CCL_ERR_UNKNOWN_QUAL:
1951 case CCL_ERR_TRUNC_NOT_LEFT:
1952 case CCL_ERR_TRUNC_NOT_RIGHT:
1953 case CCL_ERR_TRUNC_NOT_BOTH:
1954 #ifdef CCL_ERR_TRUNC_NOT_EMBED
1955 case CCL_ERR_TRUNC_NOT_EMBED:
1957 #ifdef CCL_ERR_TRUNC_NOT_SINGLE
1958 case CCL_ERR_TRUNC_NOT_SINGLE:
1960 error = YAZ_BIB1_UNSUPP_SEARCH;
1963 log_diagnostic(package, error, addinfo);
1964 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1965 package.response() = apdu_res;
1968 pqf_wrbuf = wrbuf_alloc();
1969 ccl_pquery(pqf_wrbuf, cn);
1970 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1976 ZOOM_query q = ZOOM_query_create();
1977 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1979 if (b->get_option("sru"))
1983 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1984 WRBUF wrb = wrbuf_alloc();
1986 if (!strcmp(b->get_option("sru"), "solr"))
1988 solr_transform_t cqlt = solr_transform_create();
1990 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1992 solr_transform_close(cqlt);
1996 cql_transform_t cqlt = cql_transform_create();
1998 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
2000 cql_transform_close(cqlt);
2004 ZOOM_query_cql(q, wrbuf_cstr(wrb));
2005 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
2006 b->search(q, &hits, &error, &addinfo, odr);
2008 ZOOM_query_destroy(q);
2011 wrbuf_destroy(pqf_wrbuf);
2014 error = YAZ_BIB1_MALFORMED_QUERY;
2015 const char *addinfo = "can not convert from RPN to CQL/SOLR";
2016 log_diagnostic(package, error, addinfo);
2017 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2018 package.response() = apdu_res;
2024 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
2025 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
2026 b->search(q, &hits, &error, &addinfo, odr);
2027 ZOOM_query_destroy(q);
2028 wrbuf_destroy(pqf_wrbuf);
2031 if (error && proxy_step)
2033 // reset below prevent reuse in get_backend_from_databases
2035 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
2039 const char *element_set_name = 0;
2040 Odr_int number_to_present = 0;
2042 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
2044 Odr_int number_of_records_returned = 0;
2045 Z_Records *records = get_records(
2047 0, number_to_present, &error, &addinfo,
2048 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
2051 log_diagnostic(package, error, addinfo);
2052 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2055 apdu_res->u.searchResponse->records = records;
2056 apdu_res->u.searchResponse->numberOfRecordsReturned =
2057 odr_intdup(odr, number_of_records_returned);
2059 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
2060 package.response() = apdu_res;
2063 void yf::Zoom::Frontend::handle_present(mp::Package &package)
2065 Z_GDU *gdu = package.request().get();
2066 Z_APDU *apdu_req = gdu->u.z3950;
2067 Z_APDU *apdu_res = 0;
2068 Z_PresentRequest *pr = apdu_req->u.presentRequest;
2073 package.response() = odr.create_presentResponse(
2074 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
2077 const char *element_set_name = 0;
2078 Z_RecordComposition *comp = pr->recordComposition;
2079 if (comp && comp->which != Z_RecordComp_simple)
2081 package.response() = odr.create_presentResponse(
2083 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
2086 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
2087 element_set_name = comp->u.simple->u.generic;
2088 Odr_int number_of_records_returned = 0;
2092 if (m_backend->enable_explain)
2094 Z_Records *records =
2095 get_explain_records(
2097 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
2098 &error, &addinfo, &number_of_records_returned, odr, m_backend,
2099 pr->preferredRecordSyntax, element_set_name);
2101 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
2104 apdu_res->u.presentResponse->records = records;
2105 apdu_res->u.presentResponse->numberOfRecordsReturned =
2106 odr_intdup(odr, number_of_records_returned);
2108 package.response() = apdu_res;
2112 Z_Records *records =
2113 get_records(package,
2114 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
2115 &error, &addinfo, &number_of_records_returned, odr, m_backend,
2116 pr->preferredRecordSyntax, element_set_name);
2118 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
2121 apdu_res->u.presentResponse->records = records;
2122 apdu_res->u.presentResponse->numberOfRecordsReturned =
2123 odr_intdup(odr, number_of_records_returned);
2125 package.response() = apdu_res;
2129 void yf::Zoom::Frontend::handle_package(mp::Package &package)
2131 Z_GDU *gdu = package.request().get();
2134 else if (gdu->which == Z_GDU_Z3950)
2136 Z_APDU *apdu_req = gdu->u.z3950;
2139 wrbuf_rewind(m_backend->m_apdu_wrbuf);
2140 if (apdu_req->which == Z_APDU_initRequest)
2143 package.response() = odr.create_close(
2145 Z_Close_protocolError,
2148 else if (apdu_req->which == Z_APDU_searchRequest)
2150 handle_search(package);
2152 else if (apdu_req->which == Z_APDU_presentRequest)
2154 handle_present(package);
2159 package.response() = odr.create_close(
2161 Z_Close_protocolError,
2162 "zoom filter cannot handle this APDU");
2163 package.session().close();
2167 WRBUF w = m_backend->m_apdu_wrbuf;
2168 package.log_write(wrbuf_buf(w), wrbuf_len(w));
2173 package.session().close();
2177 void yf::Zoom::Impl::process(mp::Package &package)
2179 FrontendPtr f = get_frontend(package);
2180 Z_GDU *gdu = package.request().get();
2182 if (f->m_is_virtual)
2184 f->handle_package(package);
2186 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
2189 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
2190 f->m_init_gdu = gdu;
2193 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
2194 Z_InitResponse *resp = apdu->u.initResponse;
2197 static const int masks[] = {
2202 for (i = 0; masks[i] != -1; i++)
2203 if (ODR_MASK_GET(req->options, masks[i]))
2204 ODR_MASK_SET(resp->options, masks[i]);
2206 static const int versions[] = {
2207 Z_ProtocolVersion_1,
2208 Z_ProtocolVersion_2,
2209 Z_ProtocolVersion_3,
2212 for (i = 0; versions[i] != -1; i++)
2213 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
2214 ODR_MASK_SET(resp->protocolVersion, versions[i]);
2218 *resp->preferredMessageSize = *req->preferredMessageSize;
2219 *resp->maximumRecordSize = *req->maximumRecordSize;
2221 package.response() = apdu;
2222 f->m_is_virtual = true;
2227 release_frontend(package);
2231 static mp::filter::Base* filter_creator()
2233 return new mp::filter::Zoom;
2237 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
2248 * c-file-style: "Stroustrup"
2249 * indent-tabs-mode: nil
2251 * vim: shiftwidth=4 tabstop=8 expandtab