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;
97 Backend(SearchablePtr sptr);
99 void connect(std::string zurl, int *error, char **addinfo,
101 void search(ZOOM_query q, Odr_int *hits,
102 int *error, char **addinfo, ODR odr);
103 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
104 int *error, char **addinfo, ODR odr);
105 void set_option(const char *name, const char *value);
106 void set_option(const char *name, std::string value);
107 const char *get_option(const char *name);
108 void get_zoom_error(int *error, char **addinfo, ODR odr);
110 class Zoom::Frontend : boost::noncopyable {
115 yazpp_1::GDU m_init_gdu;
116 BackendPtr m_backend;
117 void handle_package(mp::Package &package);
118 void handle_search(mp::Package &package);
119 void handle_present(mp::Package &package);
120 BackendPtr get_backend_from_databases(mp::Package &package,
121 std::string &database,
127 bool create_content_session(mp::Package &package,
132 std::string authentication,
136 void prepare_elements(BackendPtr b,
137 Odr_oid *preferredRecordSyntax,
138 const char *element_set_name,
139 bool &enable_pz2_retrieval,
140 bool &enable_pz2_transform,
141 bool &assume_marc8_charset);
143 Z_Records *get_records(Package &package,
145 Odr_int number_to_present,
148 Odr_int *number_of_records_returned,
149 ODR odr, BackendPtr b,
150 Odr_oid *preferredRecordSyntax,
151 const char *element_set_name);
153 void log_diagnostic(mp::Package &package,
154 int error, const char *addinfo);
156 Frontend(Impl *impl);
160 friend class Frontend;
164 void process(metaproxy_1::Package & package);
165 void configure(const xmlNode * ptr, bool test_only,
168 void configure_local_records(const xmlNode * ptr, bool test_only);
169 FrontendPtr get_frontend(mp::Package &package);
170 void release_frontend(mp::Package &package);
171 SearchablePtr parse_torus_record(const xmlNode *ptr);
172 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
173 std::map<mp::Session, FrontendPtr> m_clients;
174 boost::mutex m_mutex;
175 boost::condition m_cond_session_ready;
176 std::string torus_searchable_url;
177 std::string torus_content_url;
178 std::string default_realm;
179 std::map<std::string,std::string> fieldmap;
181 std::string file_path;
182 std::string content_proxy_server;
183 std::string content_tmp_file;
186 std::string element_transform;
187 std::string element_raw;
189 std::map<std::string,SearchablePtr> s_map;
194 // define Pimpl wrapper forwarding to Impl
196 yf::Zoom::Zoom() : m_p(new Impl)
201 { // must have a destructor because of boost::scoped_ptr
204 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only,
207 m_p->configure(xmlnode, test_only, path);
210 void yf::Zoom::process(mp::Package &package) const
212 m_p->process(package);
216 // define Implementation stuff
218 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
220 m_apdu_wrbuf = wrbuf_alloc();
221 m_connection = ZOOM_connection_create(0);
222 ZOOM_connection_save_apdu_wrbuf(m_connection, m_apdu_wrbuf);
225 enable_cproxy = true;
228 yf::Zoom::Backend::~Backend()
231 xsltFreeStylesheet(xsp);
232 ZOOM_connection_destroy(m_connection);
233 ZOOM_resultset_destroy(m_resultset);
234 wrbuf_destroy(m_apdu_wrbuf);
238 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
242 const char *zoom_addinfo = 0;
243 const char *dset = 0;
244 int error0 = ZOOM_connection_error_x(m_connection, &msg,
245 &zoom_addinfo, &dset);
251 if (!strcmp(dset, "info:srw/diagnostic/1"))
252 *error = yaz_diag_srw_to_bib1(error0);
253 else if (!strcmp(dset, "Bib-1"))
256 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
258 *addinfo = (char *) odr_malloc(
259 odr, 30 + strlen(dset) + strlen(msg) +
260 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
262 if (zoom_addinfo && *zoom_addinfo)
264 strcpy(*addinfo, zoom_addinfo);
265 strcat(*addinfo, " ");
267 sprintf(*addinfo + strlen(*addinfo), "(%s %d %s)", dset, error0, msg);
271 void yf::Zoom::Backend::connect(std::string zurl,
272 int *error, char **addinfo,
275 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
276 get_zoom_error(error, addinfo, odr);
279 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
280 int *error, char **addinfo, ODR odr)
282 m_resultset = ZOOM_connection_search(m_connection, q);
283 get_zoom_error(error, addinfo, odr);
285 *hits = ZOOM_resultset_size(m_resultset);
290 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
292 int *error, char **addinfo, ODR odr)
294 ZOOM_resultset_records(m_resultset, recs, start, number);
295 get_zoom_error(error, addinfo, odr);
298 void yf::Zoom::Backend::set_option(const char *name, const char *value)
300 ZOOM_connection_option_set(m_connection, name, value);
302 ZOOM_resultset_option_set(m_resultset, name, value);
305 void yf::Zoom::Backend::set_option(const char *name, std::string value)
307 set_option(name, value.c_str());
310 const char *yf::Zoom::Backend::get_option(const char *name)
312 return ZOOM_connection_option_get(m_connection, name);
315 yf::Zoom::Searchable::Searchable(CCL_bibset base)
318 use_turbomarc = true;
319 sortStrategy = "embed";
320 urlRecipe = "${md-electronic-url}";
321 ccl_bibset = ccl_qual_dup(base);
324 yf::Zoom::Searchable::~Searchable()
326 ccl_qual_rm(&ccl_bibset);
329 yf::Zoom::Frontend::Frontend(Impl *impl) :
330 m_p(impl), m_is_virtual(false), m_in_use(true)
334 yf::Zoom::Frontend::~Frontend()
338 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
340 boost::mutex::scoped_lock lock(m_mutex);
342 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
346 it = m_clients.find(package.session());
347 if (it == m_clients.end())
350 if (!it->second->m_in_use)
352 it->second->m_in_use = true;
355 m_cond_session_ready.wait(lock);
357 FrontendPtr f(new Frontend(this));
358 m_clients[package.session()] = f;
363 void yf::Zoom::Impl::release_frontend(mp::Package &package)
365 boost::mutex::scoped_lock lock(m_mutex);
366 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
368 it = m_clients.find(package.session());
369 if (it != m_clients.end())
371 if (package.session().is_closed())
377 it->second->m_in_use = false;
379 m_cond_session_ready.notify_all();
383 yf::Zoom::Impl::Impl() :
384 apdu_log(false), element_transform("pz2") , element_raw("raw")
386 bibset = ccl_qual_mk();
388 srand((unsigned int) time(0));
391 yf::Zoom::Impl::~Impl()
393 ccl_qual_rm(&bibset);
396 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
398 Zoom::SearchablePtr s(new Searchable(bibset));
400 for (ptr = ptr->children; ptr; ptr = ptr->next)
402 if (ptr->type != XML_ELEMENT_NODE)
404 if (!strcmp((const char *) ptr->name, "layer"))
406 else if (!strcmp((const char *) ptr->name,
409 s->authentication = mp::xml::get_text(ptr);
411 else if (!strcmp((const char *) ptr->name,
414 s->cfAuth = mp::xml::get_text(ptr);
416 else if (!strcmp((const char *) ptr->name,
419 s->cfProxy = mp::xml::get_text(ptr);
421 else if (!strcmp((const char *) ptr->name,
424 s->cfSubDB = mp::xml::get_text(ptr);
426 else if (!strcmp((const char *) ptr->name,
429 s->contentConnector = mp::xml::get_text(ptr);
431 else if (!strcmp((const char *) ptr->name, "udb"))
433 s->udb = mp::xml::get_text(ptr);
435 else if (!strcmp((const char *) ptr->name, "zurl"))
437 s->target = mp::xml::get_text(ptr);
439 else if (!strcmp((const char *) ptr->name, "sru"))
441 s->sru = mp::xml::get_text(ptr);
443 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
444 !strcmp((const char *) ptr->name, "sruVersion"))
446 s->sru_version = mp::xml::get_text(ptr);
448 else if (!strcmp((const char *) ptr->name,
451 s->query_encoding = mp::xml::get_text(ptr);
453 else if (!strcmp((const char *) ptr->name,
456 s->piggyback = mp::xml::get_bool(ptr, true);
458 else if (!strcmp((const char *) ptr->name,
461 s->request_syntax = mp::xml::get_text(ptr);
463 else if (!strcmp((const char *) ptr->name,
466 s->element_set = mp::xml::get_text(ptr);
468 else if (!strcmp((const char *) ptr->name,
471 s->record_encoding = mp::xml::get_text(ptr);
473 else if (!strcmp((const char *) ptr->name,
476 s->transform_xsl_fname = mp::xml::get_text(ptr);
478 else if (!strcmp((const char *) ptr->name,
481 s->transform_xsl_content = mp::xml::get_text(ptr);
483 else if (!strcmp((const char *) ptr->name,
486 s->urlRecipe = mp::xml::get_text(ptr);
488 else if (!strcmp((const char *) ptr->name,
491 ; // useTurboMarc is ignored
493 else if (!strncmp((const char *) ptr->name,
496 std::string value = mp::xml::get_text(ptr);
497 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
498 (const char *) ptr->name + 7);
500 else if (!strncmp((const char *) ptr->name,
503 std::string value = mp::xml::get_text(ptr);
504 s->sortmap[(const char *) ptr->name + 8] = value;
506 else if (!strcmp((const char *) ptr->name,
509 s->sortStrategy = mp::xml::get_text(ptr);
515 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
517 while (ptr && ptr->type != XML_ELEMENT_NODE)
522 if (!strcmp((const char *) ptr->name, "records"))
524 for (ptr = ptr->children; ptr; ptr = ptr->next)
526 if (ptr->type != XML_ELEMENT_NODE)
528 if (!strcmp((const char *) ptr->name, "record"))
530 SearchablePtr s = parse_torus_record(ptr);
533 std::string udb = s->udb;
538 throw mp::filter::FilterException
539 ("No udb for local torus record");
545 throw mp::filter::FilterException
547 + std::string((const char *) ptr->name)
548 + " in zoom filter inside element "
555 throw mp::filter::FilterException
557 + std::string((const char *) ptr->name)
558 + " in zoom filter inside element <torus>");
563 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
566 content_tmp_file = "/tmp/cf.XXXXXX.p";
571 for (ptr = ptr->children; ptr; ptr = ptr->next)
573 if (ptr->type != XML_ELEMENT_NODE)
575 else if (!strcmp((const char *) ptr->name, "torus"))
577 const struct _xmlAttr *attr;
578 for (attr = ptr->properties; attr; attr = attr->next)
580 if (!strcmp((const char *) attr->name, "url"))
581 torus_searchable_url = mp::xml::get_text(attr->children);
582 else if (!strcmp((const char *) attr->name, "content_url"))
583 torus_content_url = mp::xml::get_text(attr->children);
584 else if (!strcmp((const char *) attr->name, "realm"))
585 default_realm = mp::xml::get_text(attr->children);
586 else if (!strcmp((const char *) attr->name, "xsldir"))
587 xsldir = mp::xml::get_text(attr->children);
588 else if (!strcmp((const char *) attr->name, "element_transform"))
589 element_transform = mp::xml::get_text(attr->children);
590 else if (!strcmp((const char *) attr->name, "element_raw"))
591 element_raw = mp::xml::get_text(attr->children);
592 else if (!strcmp((const char *) attr->name, "proxy"))
593 proxy = mp::xml::get_text(attr->children);
595 throw mp::filter::FilterException(
596 "Bad attribute " + std::string((const char *)
599 // If content_url is not given, use value of searchable, to
600 // ensure backwards compatibility
601 if (!torus_content_url.length())
602 torus_content_url = torus_searchable_url;
603 configure_local_records(ptr->children, test_only);
605 else if (!strcmp((const char *) ptr->name, "cclmap"))
607 const char *addinfo = 0;
608 ccl_xml_config(bibset, ptr, &addinfo);
610 else if (!strcmp((const char *) ptr->name, "fieldmap"))
612 const struct _xmlAttr *attr;
613 std::string ccl_field;
614 std::string cql_field;
615 for (attr = ptr->properties; attr; attr = attr->next)
617 if (!strcmp((const char *) attr->name, "ccl"))
618 ccl_field = mp::xml::get_text(attr->children);
619 else if (!strcmp((const char *) attr->name, "cql"))
620 cql_field = mp::xml::get_text(attr->children);
622 throw mp::filter::FilterException(
623 "Bad attribute " + std::string((const char *)
626 if (cql_field.length())
627 fieldmap[cql_field] = ccl_field;
629 else if (!strcmp((const char *) ptr->name, "contentProxy"))
631 const struct _xmlAttr *attr;
632 for (attr = ptr->properties; attr; attr = attr->next)
634 if (!strcmp((const char *) attr->name, "server"))
635 content_proxy_server = mp::xml::get_text(attr->children);
636 else if (!strcmp((const char *) attr->name, "tmp_file"))
637 content_tmp_file = mp::xml::get_text(attr->children);
639 throw mp::filter::FilterException(
640 "Bad attribute " + std::string((const char *)
644 else if (!strcmp((const char *) ptr->name, "log"))
646 const struct _xmlAttr *attr;
647 for (attr = ptr->properties; attr; attr = attr->next)
649 if (!strcmp((const char *) attr->name, "apdu"))
650 apdu_log = mp::xml::get_bool(attr->children, false);
652 throw mp::filter::FilterException(
653 "Bad attribute " + std::string((const char *)
659 throw mp::filter::FilterException
661 + std::string((const char *) ptr->name)
662 + " in zoom filter");
667 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
669 int *error, char **addinfo,
671 std::string authentication,
675 if (b->sptr->contentConnector.length())
677 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
678 strcpy(fname, m_p->content_tmp_file.c_str());
679 char *xx = strstr(fname, "XXXXXX");
682 xx = fname + strlen(fname);
683 strcat(fname, "XXXXXX");
685 char tmp_char = xx[6];
686 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
689 FILE *file = fopen(fname, "w");
692 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
693 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
694 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
695 sprintf(*addinfo, "Could not create %s", fname);
699 b->content_session_id.assign(xx, 6);
700 WRBUF w = wrbuf_alloc();
701 wrbuf_puts(w, "#content_proxy\n");
702 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
703 if (authentication.length())
704 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
706 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
708 wrbuf_printf(w, "realm: %s\n", realm.c_str());
710 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
712 package.log("zoom", YLOG_LOG, "content file: %s", fname);
719 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
720 mp::Package &package,
721 std::string &database, int *error, char **addinfo, ODR odr,
724 std::list<BackendPtr>::const_iterator map_it;
725 if (m_backend && m_backend->m_frontend_database == database)
728 std::string input_args;
729 std::string torus_db;
730 size_t db_arg_pos = database.find(',');
731 if (db_arg_pos != std::string::npos)
733 torus_db = database.substr(0, db_arg_pos);
734 input_args = database.substr(db_arg_pos + 1);
739 std::string authentication;
740 std::string content_authentication;
742 std::string content_proxy;
743 std::string realm = m_p->default_realm;
745 const char *param_user = 0;
746 const char *param_password = 0;
747 const char *param_content_user = 0;
748 const char *param_content_password = 0;
749 const char *param_nocproxy = 0;
755 if (input_args.length())
756 no_parms = yaz_uri_to_array(input_args.c_str(),
757 odr, &names, &values);
758 // adding 10 because we'll be adding other URL args
759 const char **out_names = (const char **)
760 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
761 const char **out_values = (const char **)
762 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
764 // may be changed if it's a content connection
765 std::string torus_url = m_p->torus_searchable_url;
767 for (i = 0; i < no_parms; i++)
769 const char *name = names[i];
770 const char *value = values[i];
773 if (!strcmp(name, "user"))
775 else if (!strcmp(name, "password"))
776 param_password = value;
777 else if (!strcmp(name, "content-user"))
778 param_content_user = value;
779 else if (!strcmp(name, "content-password"))
780 param_content_password = value;
781 else if (!strcmp(name, "content-proxy"))
782 content_proxy = value;
783 else if (!strcmp(name, "nocproxy"))
784 param_nocproxy = value;
785 else if (!strcmp(name, "proxy"))
789 nmem_strsplit(odr->mem, ",", value, &dstr, &dnum);
790 if (*proxy_step >= dnum)
794 proxy = dstr[*proxy_step];
797 if (*proxy_step == dnum)
801 else if (!strcmp(name, "cproxysession"))
803 out_names[no_out_args] = name;
804 out_values[no_out_args++] = value;
805 torus_url = m_p->torus_content_url;
807 else if (!strcmp(name, "realm"))
809 else if (name[0] == 'x' && name[1] == '-')
811 out_names[no_out_args] = name;
812 out_values[no_out_args++] = value;
817 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
818 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
819 sprintf(msg, "Bad database argument: %s", name);
826 authentication = std::string(param_user);
828 authentication += "/" + std::string(param_password);
830 if (param_content_user)
832 content_authentication = std::string(param_content_user);
833 if (param_content_password)
834 content_authentication += "/" + std::string(param_content_password);
838 std::map<std::string,SearchablePtr>::iterator it;
839 it = m_p->s_map.find(torus_db);
840 if (it != m_p->s_map.end())
842 else if (torus_url.length() > 0)
844 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
848 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
849 *addinfo = odr_strdup(odr, database.c_str());
853 const xmlNode *ptr = xmlDocGetRootElement(doc);
855 { // presumably ptr is a records element node
856 // parse first record in document
857 for (ptr = ptr->children; ptr; ptr = ptr->next)
859 if (ptr->type == XML_ELEMENT_NODE
860 && !strcmp((const char *) ptr->name, "record"))
864 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
865 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
866 sprintf(*addinfo, "multiple records for udb=%s",
872 sptr = m_p->parse_torus_record(ptr);
881 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
882 *addinfo = odr_strdup(odr, database.c_str());
887 xsltStylesheetPtr xsp = 0;
888 if (sptr->transform_xsl_content.length())
890 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
891 sptr->transform_xsl_content.length());
894 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
895 *addinfo = (char *) odr_malloc(odr, 40);
896 sprintf(*addinfo, "xmlParseMemory failed");
900 xsp = xsltParseStylesheetDoc(xsp_doc);
903 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
904 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
910 else if (sptr->transform_xsl_fname.length())
912 const char *path = 0;
914 if (m_p->xsldir.length())
915 path = m_p->xsldir.c_str();
917 path = m_p->file_path.c_str();
921 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
927 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
929 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
930 sprintf(*addinfo, "File could not be read: %s",
931 sptr->transform_xsl_fname.c_str());
935 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
938 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
939 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
940 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
944 xsp = xsltParseStylesheetDoc(xsp_doc);
947 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
948 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
957 BackendPtr b(new Backend(sptr));
960 b->m_frontend_database = database;
961 b->enable_cproxy = param_nocproxy ? false : true;
963 if (sptr->query_encoding.length())
964 b->set_option("rpnCharset", sptr->query_encoding);
966 b->set_option("timeout", "40");
969 b->set_option("apdulog", "1");
971 if (sptr->piggyback && sptr->sru.length())
972 b->set_option("count", "1"); /* some SRU servers INSIST on getting
973 maximumRecords > 0 */
974 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
976 if (authentication.length() == 0)
977 authentication = sptr->authentication;
979 if (proxy.length() == 0)
980 proxy = sptr->cfProxy;
982 if (sptr->cfAuth.length())
985 b->set_option("user", sptr->cfAuth);
986 if (authentication.length())
988 size_t found = authentication.find('/');
989 if (found != std::string::npos)
991 out_names[no_out_args] = "user";
992 out_values[no_out_args++] =
993 odr_strdup(odr, authentication.substr(0, found).c_str());
995 out_names[no_out_args] = "password";
996 out_values[no_out_args++] =
997 odr_strdup(odr, authentication.substr(found+1).c_str());
1001 out_names[no_out_args] = "user";
1002 out_values[no_out_args++] =
1003 odr_strdup(odr, authentication.c_str());
1008 out_names[no_out_args] = "proxy";
1009 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1011 if (sptr->cfSubDB.length())
1013 out_names[no_out_args] = "subdatabase";
1014 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1018 out_names[no_out_args] = "nocproxy";
1019 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1024 size_t found = authentication.find('/');
1026 if (sptr->sru.length() && found != std::string::npos)
1028 b->set_option("user", authentication.substr(0, found));
1029 b->set_option("password", authentication.substr(found+1));
1032 b->set_option("user", authentication);
1035 b->set_option("proxy", proxy);
1038 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1041 if (sptr->sru.length())
1043 url = "http://" + sptr->target;
1044 b->set_option("sru", sptr->sru);
1046 if (sptr->sru_version.length())
1047 b->set_option("sru_version", sptr->sru_version);
1056 out_names[no_out_args] = 0; // terminate list
1058 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1059 (char **) out_values);
1060 url += "," + std::string(x_args);
1062 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1063 b->connect(url, error, addinfo, odr);
1064 if (*error == 0 && b->enable_cproxy)
1065 create_content_session(package, b, error, addinfo, odr,
1066 content_authentication.length() ?
1067 content_authentication : authentication,
1068 content_proxy.length() ? content_proxy : proxy,
1075 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1076 Odr_oid *preferredRecordSyntax,
1077 const char *element_set_name,
1078 bool &enable_pz2_retrieval,
1079 bool &enable_pz2_transform,
1080 bool &assume_marc8_charset)
1083 char oid_name_str[OID_STR_MAX];
1084 const char *syntax_name = 0;
1086 if (preferredRecordSyntax &&
1087 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1088 && element_set_name)
1090 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1092 enable_pz2_retrieval = true;
1093 enable_pz2_transform = true;
1095 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1097 enable_pz2_retrieval = true;
1101 if (enable_pz2_retrieval)
1103 std::string configured_request_syntax = b->sptr->request_syntax;
1104 if (configured_request_syntax.length())
1106 syntax_name = configured_request_syntax.c_str();
1107 const Odr_oid *syntax_oid =
1108 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1109 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1110 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1111 assume_marc8_charset = true;
1114 else if (preferredRecordSyntax)
1116 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1118 if (b->sptr->sru.length())
1119 syntax_name = "XML";
1121 b->set_option("preferredRecordSyntax", syntax_name);
1123 if (enable_pz2_retrieval)
1125 element_set_name = 0;
1126 if (b->sptr->element_set.length())
1127 element_set_name = b->sptr->element_set.c_str();
1130 b->set_option("elementSetName", element_set_name);
1131 if (b->sptr->sru.length() && element_set_name)
1132 b->set_option("schema", element_set_name);
1135 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1137 Odr_int number_to_present,
1140 Odr_int *number_of_records_returned,
1143 Odr_oid *preferredRecordSyntax,
1144 const char *element_set_name)
1146 *number_of_records_returned = 0;
1147 Z_Records *records = 0;
1148 bool enable_pz2_retrieval = false; // whether target profile is used
1149 bool enable_pz2_transform = false; // whether XSLT is used as well
1150 bool assume_marc8_charset = false;
1152 prepare_elements(b, preferredRecordSyntax,
1154 enable_pz2_retrieval,
1155 enable_pz2_transform,
1156 assume_marc8_charset);
1158 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1159 enable_pz2_retrieval ? "yes" : "no",
1160 enable_pz2_transform ? "yes" : "no");
1162 if (start < 0 || number_to_present <=0)
1165 if (number_to_present > 10000)
1166 number_to_present = 10000;
1168 ZOOM_record *recs = (ZOOM_record *)
1169 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1171 b->present(start, number_to_present, recs, error, addinfo, odr);
1176 for (i = 0; i < number_to_present; i++)
1181 { // only return records if no error and at least one record
1182 char *odr_database = odr_strdup(odr,
1183 b->m_frontend_database.c_str());
1184 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1185 odr_malloc(odr, sizeof(*npl));
1186 *number_of_records_returned = i;
1187 npl->num_records = i;
1188 npl->records = (Z_NamePlusRecord **)
1189 odr_malloc(odr, i * sizeof(*npl->records));
1190 for (i = 0; i < number_to_present; i++)
1192 Z_NamePlusRecord *npr = 0;
1193 const char *addinfo;
1195 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1196 &addinfo, 0 /* diagset */);
1200 log_diagnostic(package, sur_error, addinfo);
1201 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1204 else if (enable_pz2_retrieval)
1206 char rec_type_str[100];
1207 const char *record_encoding = 0;
1209 if (b->sptr->record_encoding.length())
1210 record_encoding = b->sptr->record_encoding.c_str();
1211 else if (assume_marc8_charset)
1212 record_encoding = "marc8";
1214 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1215 if (record_encoding)
1217 strcat(rec_type_str, "; charset=");
1218 strcat(rec_type_str, record_encoding);
1221 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1224 xmlChar *xmlrec_buf = 0;
1225 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1227 if (!rec_buf && !npr)
1229 std::string addinfo("ZOOM_record_get failed for type ");
1231 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1232 addinfo += rec_type_str;
1233 log_diagnostic(package, error, addinfo.c_str());
1234 npr = zget_surrogateDiagRec(odr, odr_database,
1235 error, addinfo.c_str());
1239 package.log_write(rec_buf, rec_len);
1240 package.log_write("\r\n", 2);
1243 if (rec_buf && b->xsp && enable_pz2_transform)
1245 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1248 const char *addinfo = "xml parse failed for record";
1249 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1250 log_diagnostic(package, error, addinfo);
1251 npr = zget_surrogateDiagRec(
1252 odr, odr_database, error, addinfo);
1257 xsltApplyStylesheet(b->xsp, rec_doc, 0);
1261 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1263 rec_buf = (const char *) xmlrec_buf;
1264 package.log("zoom", YLOG_LOG, "xslt successful");
1265 package.log_write(rec_buf, rec_len);
1267 xmlFreeDoc(rec_res);
1271 std::string addinfo;
1273 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1275 addinfo = "xslt apply failed for "
1276 + b->sptr->transform_xsl_fname;
1277 log_diagnostic(package, error, addinfo.c_str());
1278 npr = zget_surrogateDiagRec(
1279 odr, odr_database, error, addinfo.c_str());
1281 xmlFreeDoc(rec_doc);
1285 if (rec_buf && b->enable_cproxy)
1287 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1289 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1290 if (res.length() && b->content_session_id.length())
1292 size_t off = res.find_first_of("://");
1293 if (off != std::string::npos)
1296 sprintf(tmp, "%s.%s/",
1297 b->content_session_id.c_str(),
1298 m_p->content_proxy_server.c_str());
1299 res.insert(off + 3, tmp);
1304 xmlNode *ptr = xmlDocGetRootElement(doc);
1305 while (ptr && ptr->type != XML_ELEMENT_NODE)
1308 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1309 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1311 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1315 xmlFree(xmlrec_buf);
1317 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1318 rec_buf = (const char *) xmlrec_buf;
1325 npr = zget_surrogateDiagRec(
1327 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1331 npr = (Z_NamePlusRecord *)
1332 odr_malloc(odr, sizeof(*npr));
1333 npr->databaseName = odr_database;
1334 npr->which = Z_NamePlusRecord_databaseRecord;
1335 npr->u.databaseRecord =
1336 z_ext_record_xml(odr, rec_buf, rec_len);
1340 xmlFree(xmlrec_buf);
1345 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1348 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1349 npr->databaseName = odr_database;
1350 npr->which = Z_NamePlusRecord_databaseRecord;
1351 npr->u.databaseRecord = ext;
1355 npr = zget_surrogateDiagRec(
1357 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1358 "ZOOM_record, type ext");
1361 npl->records[i] = npr;
1363 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1364 records->which = Z_Records_DBOSD;
1365 records->u.databaseOrSurDiagnostics = npl;
1370 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1373 struct cql_node *r = 0;
1381 std::map<std::string,std::string>::const_iterator it;
1382 it = fieldmap.find(cn->u.st.index);
1383 if (it == fieldmap.end())
1385 if (it->second.length())
1386 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1392 r = convert_cql_fields(cn->u.boolean.left, odr);
1394 r = convert_cql_fields(cn->u.boolean.right, odr);
1397 r = convert_cql_fields(cn->u.sort.search, odr);
1403 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1404 int error, const char *addinfo)
1406 const char *err_msg = yaz_diag_bib1_str(error);
1408 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1409 error, err_msg, addinfo);
1411 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1415 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1417 Z_GDU *gdu = package.request().get();
1418 Z_APDU *apdu_req = gdu->u.z3950;
1419 Z_APDU *apdu_res = 0;
1421 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1422 if (sr->num_databaseNames != 1)
1424 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
1425 log_diagnostic(package, error, 0);
1426 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
1427 package.response() = apdu_res;
1437 std::string db(sr->databaseNames[0]);
1439 BackendPtr b = get_backend_from_databases(package, db, &error,
1440 &addinfo, odr, &proxy_step);
1441 if (error && proxy_step)
1443 package.log("zoom", YLOG_WARN,
1444 "create backend failed: trying next proxy");
1449 log_diagnostic(package, error, addinfo);
1450 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1451 package.response() = apdu_res;
1455 b->set_option("setname", "default");
1457 bool enable_pz2_retrieval = false;
1458 bool enable_pz2_transform = false;
1459 bool assume_marc8_charset = false;
1460 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1461 enable_pz2_retrieval,
1462 enable_pz2_transform,
1463 assume_marc8_charset);
1466 Z_Query *query = sr->query;
1467 WRBUF ccl_wrbuf = 0;
1468 WRBUF pqf_wrbuf = 0;
1469 std::string sortkeys;
1471 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1474 pqf_wrbuf = wrbuf_alloc();
1475 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1477 else if (query->which == Z_Query_type_2)
1480 ccl_wrbuf = wrbuf_alloc();
1481 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1482 query->u.type_2->len);
1484 else if (query->which == Z_Query_type_104 &&
1485 query->u.type_104->which == Z_External_CQL)
1488 const char *cql = query->u.type_104->u.cql;
1489 CQL_parser cp = cql_parser_create();
1490 int r = cql_parser_string(cp, cql);
1491 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1494 cql_parser_destroy(cp);
1495 error = YAZ_BIB1_MALFORMED_QUERY;
1496 const char *addinfo = "CQL syntax error";
1497 log_diagnostic(package, error, addinfo);
1499 odr.create_searchResponse(apdu_req, error, addinfo);
1500 package.response() = apdu_res;
1503 struct cql_node *cn = cql_parser_result(cp);
1504 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1507 // hopefully we are getting a ptr to a index+relation+term node
1508 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1510 if (cn_error->which == CQL_NODE_ST)
1511 addinfo = cn_error->u.st.index;
1513 log_diagnostic(package, error, addinfo);
1514 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1515 package.response() = apdu_res;
1516 cql_parser_destroy(cp);
1520 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1523 error = YAZ_BIB1_MALFORMED_QUERY;
1524 const char *addinfo = "CQL to CCL conversion error";
1526 log_diagnostic(package, error, addinfo);
1527 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1528 package.response() = apdu_res;
1529 cql_parser_destroy(cp);
1533 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1534 if (cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf))
1536 error = YAZ_BIB1_ILLEGAL_SORT_RELATION;
1537 const char *addinfo = "CQL to CCL sortby conversion";
1539 log_diagnostic(package, error, addinfo);
1540 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1541 package.response() = apdu_res;
1542 wrbuf_destroy(sru_sortkeys_wrbuf);
1543 cql_parser_destroy(cp);
1546 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1547 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1549 wrbuf_destroy(sru_sortkeys_wrbuf);
1551 ccl_wrbuf = wrbuf_alloc();
1552 wrbuf_puts(ccl_wrbuf, ccl_buf);
1554 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1555 yaz_tok_parse_t tp =
1556 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1557 yaz_tok_cfg_destroy(tc);
1559 /* go through sortspec and map fields */
1560 int token = yaz_tok_move(tp);
1561 while (token != YAZ_TOK_EOF)
1563 if (token == YAZ_TOK_STRING)
1565 const char *field = yaz_tok_parse_string(tp);
1566 std::map<std::string,std::string>::iterator it;
1567 it = b->sptr->sortmap.find(field);
1568 if (it != b->sptr->sortmap.end())
1569 sortkeys += it->second;
1574 token = yaz_tok_move(tp);
1575 if (token == YAZ_TOK_STRING)
1577 sortkeys += yaz_tok_parse_string(tp);
1579 if (token != YAZ_TOK_EOF)
1582 token = yaz_tok_move(tp);
1585 yaz_tok_parse_destroy(tp);
1586 wrbuf_destroy(sort_spec_wrbuf);
1588 cql_parser_destroy(cp);
1592 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1593 const char *addinfo = 0;
1594 log_diagnostic(package, error, addinfo);
1595 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1596 package.response() = apdu_res;
1603 assert(pqf_wrbuf == 0);
1605 struct ccl_rpn_node *cn;
1606 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1607 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1609 wrbuf_destroy(ccl_wrbuf);
1612 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1613 error = YAZ_BIB1_MALFORMED_QUERY;
1617 case CCL_ERR_UNKNOWN_QUAL:
1618 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1620 case CCL_ERR_TRUNC_NOT_LEFT:
1621 case CCL_ERR_TRUNC_NOT_RIGHT:
1622 case CCL_ERR_TRUNC_NOT_BOTH:
1623 error = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1626 log_diagnostic(package, error, addinfo);
1627 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1628 package.response() = apdu_res;
1631 pqf_wrbuf = wrbuf_alloc();
1632 ccl_pquery(pqf_wrbuf, cn);
1633 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1639 ZOOM_query q = ZOOM_query_create();
1640 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1642 if (b->get_option("sru"))
1646 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1647 WRBUF wrb = wrbuf_alloc();
1649 if (!strcmp(b->get_option("sru"), "solr"))
1651 solr_transform_t cqlt = solr_transform_create();
1653 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1655 solr_transform_close(cqlt);
1659 cql_transform_t cqlt = cql_transform_create();
1661 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1663 cql_transform_close(cqlt);
1667 ZOOM_query_cql(q, wrbuf_cstr(wrb));
1668 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
1669 b->search(q, &hits, &error, &addinfo, odr);
1671 ZOOM_query_destroy(q);
1674 wrbuf_destroy(pqf_wrbuf);
1677 error = YAZ_BIB1_MALFORMED_QUERY;
1678 const char *addinfo = "can not convert from RPN to CQL/SOLR";
1679 log_diagnostic(package, error, addinfo);
1680 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1681 package.response() = apdu_res;
1687 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
1688 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1689 b->search(q, &hits, &error, &addinfo, odr);
1690 ZOOM_query_destroy(q);
1691 wrbuf_destroy(pqf_wrbuf);
1694 if (error && proxy_step)
1696 // reset below prevent reuse in get_backend_from_databases
1698 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
1702 const char *element_set_name = 0;
1703 Odr_int number_to_present = 0;
1705 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1707 Odr_int number_of_records_returned = 0;
1708 Z_Records *records = get_records(
1710 0, number_to_present, &error, &addinfo,
1711 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1714 log_diagnostic(package, error, addinfo);
1715 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1718 apdu_res->u.searchResponse->records = records;
1719 apdu_res->u.searchResponse->numberOfRecordsReturned =
1720 odr_intdup(odr, number_of_records_returned);
1722 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1723 package.response() = apdu_res;
1726 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1728 Z_GDU *gdu = package.request().get();
1729 Z_APDU *apdu_req = gdu->u.z3950;
1730 Z_APDU *apdu_res = 0;
1731 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1736 package.response() = odr.create_presentResponse(
1737 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1740 const char *element_set_name = 0;
1741 Z_RecordComposition *comp = pr->recordComposition;
1742 if (comp && comp->which != Z_RecordComp_simple)
1744 package.response() = odr.create_presentResponse(
1746 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1749 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1750 element_set_name = comp->u.simple->u.generic;
1751 Odr_int number_of_records_returned = 0;
1754 Z_Records *records = get_records(package,
1755 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1756 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1757 pr->preferredRecordSyntax, element_set_name);
1759 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1762 apdu_res->u.presentResponse->records = records;
1763 apdu_res->u.presentResponse->numberOfRecordsReturned =
1764 odr_intdup(odr, number_of_records_returned);
1766 package.response() = apdu_res;
1769 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1771 Z_GDU *gdu = package.request().get();
1774 else if (gdu->which == Z_GDU_Z3950)
1776 Z_APDU *apdu_req = gdu->u.z3950;
1779 wrbuf_rewind(m_backend->m_apdu_wrbuf);
1780 if (apdu_req->which == Z_APDU_initRequest)
1783 package.response() = odr.create_close(
1785 Z_Close_protocolError,
1788 else if (apdu_req->which == Z_APDU_searchRequest)
1790 handle_search(package);
1792 else if (apdu_req->which == Z_APDU_presentRequest)
1794 handle_present(package);
1799 package.response() = odr.create_close(
1801 Z_Close_protocolError,
1802 "zoom filter cannot handle this APDU");
1803 package.session().close();
1807 WRBUF w = m_backend->m_apdu_wrbuf;
1808 package.log_write(wrbuf_buf(w), wrbuf_len(w));
1813 package.session().close();
1817 void yf::Zoom::Impl::process(mp::Package &package)
1819 FrontendPtr f = get_frontend(package);
1820 Z_GDU *gdu = package.request().get();
1822 if (f->m_is_virtual)
1824 f->handle_package(package);
1826 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1829 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1830 f->m_init_gdu = gdu;
1833 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1834 Z_InitResponse *resp = apdu->u.initResponse;
1837 static const int masks[] = {
1842 for (i = 0; masks[i] != -1; i++)
1843 if (ODR_MASK_GET(req->options, masks[i]))
1844 ODR_MASK_SET(resp->options, masks[i]);
1846 static const int versions[] = {
1847 Z_ProtocolVersion_1,
1848 Z_ProtocolVersion_2,
1849 Z_ProtocolVersion_3,
1852 for (i = 0; versions[i] != -1; i++)
1853 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1854 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1858 *resp->preferredMessageSize = *req->preferredMessageSize;
1859 *resp->maximumRecordSize = *req->maximumRecordSize;
1861 package.response() = apdu;
1862 f->m_is_virtual = true;
1867 release_frontend(package);
1871 static mp::filter::Base* filter_creator()
1873 return new mp::filter::Zoom;
1877 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1888 * c-file-style: "Stroustrup"
1889 * indent-tabs-mode: nil
1891 * vim: shiftwidth=4 tabstop=8 expandtab