1 /* This file is part of Metaproxy.
2 Copyright (C) 2005-2011 Index Data
4 Metaproxy is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <sys/types.h>
23 #include "filter_zoom.hpp"
24 #include <metaproxy/package.hpp>
25 #include <metaproxy/util.hpp>
26 #include <metaproxy/xmlutil.hpp>
29 #include <libxslt/xsltutils.h>
30 #include <libxslt/transform.h>
32 #include <boost/thread/mutex.hpp>
33 #include <boost/thread/condition.hpp>
35 #include <yaz/yaz-version.h>
36 #include <yaz/tpath.h>
38 #include <yaz/ccl_xml.h>
40 #include <yaz/rpn2cql.h>
41 #include <yaz/rpn2solr.h>
42 #include <yaz/pquery.h>
44 #include <yaz/oid_db.h>
45 #include <yaz/diagbib1.h>
48 #include <yaz/querytowrbuf.h>
49 #include <yaz/sortspec.h>
50 #include <yaz/tokenizer.h>
53 namespace mp = metaproxy_1;
54 namespace yf = mp::filter;
56 namespace metaproxy_1 {
58 class Zoom::Searchable : boost::noncopyable {
60 std::string authentication;
66 std::string query_encoding;
68 std::string sru_version;
69 std::string request_syntax;
70 std::string element_set;
71 std::string record_encoding;
72 std::string transform_xsl_fname;
73 std::string transform_xsl_content;
74 std::string urlRecipe;
75 std::string contentConnector;
76 std::string sortStrategy;
79 CCL_bibset ccl_bibset;
80 std::map<std::string, std::string> sortmap;
81 Searchable(CCL_bibset base);
84 class Zoom::Backend : boost::noncopyable {
86 friend class Frontend;
89 ZOOM_connection m_connection;
90 ZOOM_resultset m_resultset;
91 std::string m_frontend_database;
93 xsltStylesheetPtr xsp;
94 std::string content_session_id;
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);
237 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
241 const char *zoom_addinfo = 0;
242 const char *dset = 0;
243 int error0 = ZOOM_connection_error_x(m_connection, &msg,
244 &zoom_addinfo, &dset);
250 if (!strcmp(dset, "info:srw/diagnostic/1"))
251 *error = yaz_diag_srw_to_bib1(error0);
252 else if (!strcmp(dset, "Bib-1"))
255 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
257 *addinfo = (char *) odr_malloc(
258 odr, 30 + strlen(dset) + strlen(msg) +
259 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
261 if (zoom_addinfo && *zoom_addinfo)
263 strcpy(*addinfo, zoom_addinfo);
264 strcat(*addinfo, " ");
266 sprintf(*addinfo + strlen(*addinfo), "(%s %d %s)", dset, error0, msg);
270 void yf::Zoom::Backend::connect(std::string zurl,
271 int *error, char **addinfo,
274 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
275 get_zoom_error(error, addinfo, odr);
278 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
279 int *error, char **addinfo, ODR odr)
281 m_resultset = ZOOM_connection_search(m_connection, q);
282 get_zoom_error(error, addinfo, odr);
284 *hits = ZOOM_resultset_size(m_resultset);
289 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
291 int *error, char **addinfo, ODR odr)
293 ZOOM_resultset_records(m_resultset, recs, start, number);
294 get_zoom_error(error, addinfo, odr);
297 void yf::Zoom::Backend::set_option(const char *name, const char *value)
299 ZOOM_connection_option_set(m_connection, name, value);
301 ZOOM_resultset_option_set(m_resultset, name, value);
304 void yf::Zoom::Backend::set_option(const char *name, std::string value)
306 set_option(name, value.c_str());
309 const char *yf::Zoom::Backend::get_option(const char *name)
311 return ZOOM_connection_option_get(m_connection, name);
314 yf::Zoom::Searchable::Searchable(CCL_bibset base)
317 use_turbomarc = true;
318 sortStrategy = "embed";
319 urlRecipe = "${md-electronic-url}";
320 ccl_bibset = ccl_qual_dup(base);
323 yf::Zoom::Searchable::~Searchable()
325 ccl_qual_rm(&ccl_bibset);
328 yf::Zoom::Frontend::Frontend(Impl *impl) :
329 m_p(impl), m_is_virtual(false), m_in_use(true)
333 yf::Zoom::Frontend::~Frontend()
337 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
339 boost::mutex::scoped_lock lock(m_mutex);
341 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
345 it = m_clients.find(package.session());
346 if (it == m_clients.end())
349 if (!it->second->m_in_use)
351 it->second->m_in_use = true;
354 m_cond_session_ready.wait(lock);
356 FrontendPtr f(new Frontend(this));
357 m_clients[package.session()] = f;
362 void yf::Zoom::Impl::release_frontend(mp::Package &package)
364 boost::mutex::scoped_lock lock(m_mutex);
365 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
367 it = m_clients.find(package.session());
368 if (it != m_clients.end())
370 if (package.session().is_closed())
376 it->second->m_in_use = false;
378 m_cond_session_ready.notify_all();
382 yf::Zoom::Impl::Impl() :
383 apdu_log(false), element_transform("pz2") , element_raw("raw")
385 bibset = ccl_qual_mk();
387 srand((unsigned int) time(0));
390 yf::Zoom::Impl::~Impl()
392 ccl_qual_rm(&bibset);
395 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
397 Zoom::SearchablePtr s(new Searchable(bibset));
399 for (ptr = ptr->children; ptr; ptr = ptr->next)
401 if (ptr->type != XML_ELEMENT_NODE)
403 if (!strcmp((const char *) ptr->name, "layer"))
405 else if (!strcmp((const char *) ptr->name,
408 s->authentication = mp::xml::get_text(ptr);
410 else if (!strcmp((const char *) ptr->name,
413 s->cfAuth = mp::xml::get_text(ptr);
415 else if (!strcmp((const char *) ptr->name,
418 s->cfProxy = mp::xml::get_text(ptr);
420 else if (!strcmp((const char *) ptr->name,
423 s->cfSubDB = mp::xml::get_text(ptr);
425 else if (!strcmp((const char *) ptr->name,
428 s->contentConnector = mp::xml::get_text(ptr);
430 else if (!strcmp((const char *) ptr->name, "udb"))
432 s->udb = mp::xml::get_text(ptr);
434 else if (!strcmp((const char *) ptr->name, "zurl"))
436 s->target = mp::xml::get_text(ptr);
438 else if (!strcmp((const char *) ptr->name, "sru"))
440 s->sru = mp::xml::get_text(ptr);
442 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
443 !strcmp((const char *) ptr->name, "sruVersion"))
445 s->sru_version = mp::xml::get_text(ptr);
447 else if (!strcmp((const char *) ptr->name,
450 s->query_encoding = mp::xml::get_text(ptr);
452 else if (!strcmp((const char *) ptr->name,
455 s->piggyback = mp::xml::get_bool(ptr, true);
457 else if (!strcmp((const char *) ptr->name,
460 s->request_syntax = mp::xml::get_text(ptr);
462 else if (!strcmp((const char *) ptr->name,
465 s->element_set = mp::xml::get_text(ptr);
467 else if (!strcmp((const char *) ptr->name,
470 s->record_encoding = mp::xml::get_text(ptr);
472 else if (!strcmp((const char *) ptr->name,
475 s->transform_xsl_fname = mp::xml::get_text(ptr);
477 else if (!strcmp((const char *) ptr->name,
480 s->transform_xsl_content = mp::xml::get_text(ptr);
482 else if (!strcmp((const char *) ptr->name,
485 s->urlRecipe = mp::xml::get_text(ptr);
487 else if (!strcmp((const char *) ptr->name,
490 ; // useTurboMarc is ignored
492 else if (!strncmp((const char *) ptr->name,
495 std::string value = mp::xml::get_text(ptr);
496 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
497 (const char *) ptr->name + 7);
499 else if (!strncmp((const char *) ptr->name,
502 std::string value = mp::xml::get_text(ptr);
503 s->sortmap[(const char *) ptr->name + 8] = value;
505 else if (!strcmp((const char *) ptr->name,
508 s->sortStrategy = mp::xml::get_text(ptr);
514 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
516 while (ptr && ptr->type != XML_ELEMENT_NODE)
521 if (!strcmp((const char *) ptr->name, "records"))
523 for (ptr = ptr->children; ptr; ptr = ptr->next)
525 if (ptr->type != XML_ELEMENT_NODE)
527 if (!strcmp((const char *) ptr->name, "record"))
529 SearchablePtr s = parse_torus_record(ptr);
532 std::string udb = s->udb;
537 throw mp::filter::FilterException
538 ("No udb for local torus record");
544 throw mp::filter::FilterException
546 + std::string((const char *) ptr->name)
547 + " in zoom filter inside element "
554 throw mp::filter::FilterException
556 + std::string((const char *) ptr->name)
557 + " in zoom filter inside element <torus>");
562 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
565 content_tmp_file = "/tmp/cf.XXXXXX.p";
570 for (ptr = ptr->children; ptr; ptr = ptr->next)
572 if (ptr->type != XML_ELEMENT_NODE)
574 else if (!strcmp((const char *) ptr->name, "torus"))
576 const struct _xmlAttr *attr;
577 for (attr = ptr->properties; attr; attr = attr->next)
579 if (!strcmp((const char *) attr->name, "url"))
580 torus_searchable_url = mp::xml::get_text(attr->children);
581 else if (!strcmp((const char *) attr->name, "content_url"))
582 torus_content_url = mp::xml::get_text(attr->children);
583 else if (!strcmp((const char *) attr->name, "realm"))
584 default_realm = mp::xml::get_text(attr->children);
585 else if (!strcmp((const char *) attr->name, "xsldir"))
586 xsldir = mp::xml::get_text(attr->children);
587 else if (!strcmp((const char *) attr->name, "element_transform"))
588 element_transform = mp::xml::get_text(attr->children);
589 else if (!strcmp((const char *) attr->name, "element_raw"))
590 element_raw = mp::xml::get_text(attr->children);
591 else if (!strcmp((const char *) attr->name, "proxy"))
592 proxy = mp::xml::get_text(attr->children);
594 throw mp::filter::FilterException(
595 "Bad attribute " + std::string((const char *)
598 // If content_url is not given, use value of searchable, to
599 // ensure backwards compatibility
600 if (!torus_content_url.length())
601 torus_content_url = torus_searchable_url;
602 configure_local_records(ptr->children, test_only);
604 else if (!strcmp((const char *) ptr->name, "cclmap"))
606 const char *addinfo = 0;
607 ccl_xml_config(bibset, ptr, &addinfo);
609 else if (!strcmp((const char *) ptr->name, "fieldmap"))
611 const struct _xmlAttr *attr;
612 std::string ccl_field;
613 std::string cql_field;
614 for (attr = ptr->properties; attr; attr = attr->next)
616 if (!strcmp((const char *) attr->name, "ccl"))
617 ccl_field = mp::xml::get_text(attr->children);
618 else if (!strcmp((const char *) attr->name, "cql"))
619 cql_field = mp::xml::get_text(attr->children);
621 throw mp::filter::FilterException(
622 "Bad attribute " + std::string((const char *)
625 if (cql_field.length())
626 fieldmap[cql_field] = ccl_field;
628 else if (!strcmp((const char *) ptr->name, "contentProxy"))
630 const struct _xmlAttr *attr;
631 for (attr = ptr->properties; attr; attr = attr->next)
633 if (!strcmp((const char *) attr->name, "server"))
634 content_proxy_server = mp::xml::get_text(attr->children);
635 else if (!strcmp((const char *) attr->name, "tmp_file"))
636 content_tmp_file = mp::xml::get_text(attr->children);
638 throw mp::filter::FilterException(
639 "Bad attribute " + std::string((const char *)
643 else if (!strcmp((const char *) ptr->name, "log"))
645 const struct _xmlAttr *attr;
646 for (attr = ptr->properties; attr; attr = attr->next)
648 if (!strcmp((const char *) attr->name, "apdu"))
649 apdu_log = mp::xml::get_bool(attr->children, false);
651 throw mp::filter::FilterException(
652 "Bad attribute " + std::string((const char *)
658 throw mp::filter::FilterException
660 + std::string((const char *) ptr->name)
661 + " in zoom filter");
666 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
668 int *error, char **addinfo,
670 std::string authentication,
674 if (b->sptr->contentConnector.length())
676 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
677 strcpy(fname, m_p->content_tmp_file.c_str());
678 char *xx = strstr(fname, "XXXXXX");
681 xx = fname + strlen(fname);
682 strcat(fname, "XXXXXX");
684 char tmp_char = xx[6];
685 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
688 FILE *file = fopen(fname, "w");
691 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
692 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
693 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
694 sprintf(*addinfo, "Could not create %s", fname);
698 b->content_session_id.assign(xx, 6);
699 WRBUF w = wrbuf_alloc();
700 wrbuf_puts(w, "#content_proxy\n");
701 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
702 if (authentication.length())
703 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
705 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
707 wrbuf_printf(w, "realm: %s\n", realm.c_str());
709 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
711 package.log("zoom", YLOG_LOG, "content file: %s", fname);
717 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
718 mp::Package &package,
719 std::string &database, int *error, char **addinfo, ODR odr,
722 std::list<BackendPtr>::const_iterator map_it;
723 if (m_backend && m_backend->m_frontend_database == database)
726 std::string input_args;
727 std::string torus_db;
728 size_t db_arg_pos = database.find(',');
729 if (db_arg_pos != std::string::npos)
731 torus_db = database.substr(0, db_arg_pos);
732 input_args = database.substr(db_arg_pos + 1);
737 std::string authentication;
738 std::string content_authentication;
740 std::string content_proxy;
741 std::string realm = m_p->default_realm;
743 const char *param_user = 0;
744 const char *param_password = 0;
745 const char *param_content_user = 0;
746 const char *param_content_password = 0;
747 const char *param_nocproxy = 0;
753 if (input_args.length())
754 no_parms = yaz_uri_to_array(input_args.c_str(),
755 odr, &names, &values);
756 // adding 10 because we'll be adding other URL args
757 const char **out_names = (const char **)
758 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
759 const char **out_values = (const char **)
760 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
762 // may be changed if it's a content connection
763 std::string torus_url = m_p->torus_searchable_url;
765 for (i = 0; i < no_parms; i++)
767 const char *name = names[i];
768 const char *value = values[i];
771 if (!strcmp(name, "user"))
773 else if (!strcmp(name, "password"))
774 param_password = value;
775 else if (!strcmp(name, "content-user"))
776 param_content_user = value;
777 else if (!strcmp(name, "content-password"))
778 param_content_password = value;
779 else if (!strcmp(name, "content-proxy"))
780 content_proxy = value;
781 else if (!strcmp(name, "nocproxy"))
782 param_nocproxy = value;
783 else if (!strcmp(name, "proxy"))
787 nmem_strsplit(odr->mem, ",", value, &dstr, &dnum);
788 if (*proxy_step >= dnum)
792 proxy = dstr[*proxy_step];
795 if (*proxy_step == dnum)
799 else if (!strcmp(name, "cproxysession"))
801 out_names[no_out_args] = name;
802 out_values[no_out_args++] = value;
803 torus_url = m_p->torus_content_url;
805 else if (!strcmp(name, "realm"))
807 else if (name[0] == 'x' && name[1] == '-')
809 out_names[no_out_args] = name;
810 out_values[no_out_args++] = value;
815 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
816 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
817 sprintf(msg, "Bad database argument: %s", name);
824 authentication = std::string(param_user);
826 authentication += "/" + std::string(param_password);
828 if (param_content_user)
830 content_authentication = std::string(param_content_user);
831 if (param_content_password)
832 content_authentication += "/" + std::string(param_content_password);
836 std::map<std::string,SearchablePtr>::iterator it;
837 it = m_p->s_map.find(torus_db);
838 if (it != m_p->s_map.end())
840 else if (torus_url.length() > 0)
842 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
846 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
847 *addinfo = odr_strdup(odr, database.c_str());
851 const xmlNode *ptr = xmlDocGetRootElement(doc);
853 { // presumably ptr is a records element node
854 // parse first record in document
855 for (ptr = ptr->children; ptr; ptr = ptr->next)
857 if (ptr->type == XML_ELEMENT_NODE
858 && !strcmp((const char *) ptr->name, "record"))
862 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
863 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
864 sprintf(*addinfo, "multiple records for udb=%s",
870 sptr = m_p->parse_torus_record(ptr);
879 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
880 *addinfo = odr_strdup(odr, database.c_str());
885 xsltStylesheetPtr xsp = 0;
886 if (sptr->transform_xsl_content.length())
888 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
889 sptr->transform_xsl_content.length());
892 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
893 *addinfo = (char *) odr_malloc(odr, 40);
894 sprintf(*addinfo, "xmlParseMemory failed");
898 xsp = xsltParseStylesheetDoc(xsp_doc);
901 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
902 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
908 else if (sptr->transform_xsl_fname.length())
910 const char *path = 0;
912 if (m_p->xsldir.length())
913 path = m_p->xsldir.c_str();
915 path = m_p->file_path.c_str();
919 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
925 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
927 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
928 sprintf(*addinfo, "File could not be read: %s",
929 sptr->transform_xsl_fname.c_str());
933 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
936 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
937 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
938 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
942 xsp = xsltParseStylesheetDoc(xsp_doc);
945 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
946 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
955 BackendPtr b(new Backend(sptr));
958 b->m_frontend_database = database;
959 b->enable_cproxy = param_nocproxy ? false : true;
961 if (sptr->query_encoding.length())
962 b->set_option("rpnCharset", sptr->query_encoding);
964 b->set_option("timeout", "40");
967 b->set_option("apdulog", "1");
969 if (sptr->piggyback && sptr->sru.length())
970 b->set_option("count", "1"); /* some SRU servers INSIST on getting
971 maximumRecords > 0 */
972 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
974 if (authentication.length() == 0)
975 authentication = sptr->authentication;
977 if (proxy.length() == 0)
978 proxy = sptr->cfProxy;
980 if (sptr->cfAuth.length())
983 b->set_option("user", sptr->cfAuth);
984 if (authentication.length())
986 size_t found = authentication.find('/');
987 if (found != std::string::npos)
989 out_names[no_out_args] = "user";
990 out_values[no_out_args++] =
991 odr_strdup(odr, authentication.substr(0, found).c_str());
993 out_names[no_out_args] = "password";
994 out_values[no_out_args++] =
995 odr_strdup(odr, authentication.substr(found+1).c_str());
999 out_names[no_out_args] = "user";
1000 out_values[no_out_args++] =
1001 odr_strdup(odr, authentication.c_str());
1006 out_names[no_out_args] = "proxy";
1007 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1009 if (sptr->cfSubDB.length())
1011 out_names[no_out_args] = "subdatabase";
1012 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1016 out_names[no_out_args] = "nocproxy";
1017 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1022 size_t found = authentication.find('/');
1024 if (sptr->sru.length() && found != std::string::npos)
1026 b->set_option("user", authentication.substr(0, found));
1027 b->set_option("password", authentication.substr(found+1));
1030 b->set_option("user", authentication);
1033 b->set_option("proxy", proxy);
1036 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1039 if (sptr->sru.length())
1041 url = "http://" + sptr->target;
1042 b->set_option("sru", sptr->sru);
1044 if (sptr->sru_version.length())
1045 b->set_option("sru_version", sptr->sru_version);
1054 out_names[no_out_args] = 0; // terminate list
1056 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1057 (char **) out_values);
1058 url += "," + std::string(x_args);
1060 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1061 b->connect(url, error, addinfo, odr);
1062 if (*error == 0 && b->enable_cproxy)
1063 create_content_session(package, b, error, addinfo, odr,
1064 content_authentication.length() ?
1065 content_authentication : authentication,
1066 content_proxy.length() ? content_proxy : proxy,
1073 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1074 Odr_oid *preferredRecordSyntax,
1075 const char *element_set_name,
1076 bool &enable_pz2_retrieval,
1077 bool &enable_pz2_transform,
1078 bool &assume_marc8_charset)
1081 char oid_name_str[OID_STR_MAX];
1082 const char *syntax_name = 0;
1084 if (preferredRecordSyntax &&
1085 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1086 && element_set_name)
1088 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1090 enable_pz2_retrieval = true;
1091 enable_pz2_transform = true;
1093 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1095 enable_pz2_retrieval = true;
1099 if (enable_pz2_retrieval)
1101 std::string configured_request_syntax = b->sptr->request_syntax;
1102 if (configured_request_syntax.length())
1104 syntax_name = configured_request_syntax.c_str();
1105 const Odr_oid *syntax_oid =
1106 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1107 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1108 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1109 assume_marc8_charset = true;
1112 else if (preferredRecordSyntax)
1114 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1116 if (b->sptr->sru.length())
1117 syntax_name = "XML";
1119 b->set_option("preferredRecordSyntax", syntax_name);
1121 if (enable_pz2_retrieval)
1123 element_set_name = 0;
1124 if (b->sptr->element_set.length())
1125 element_set_name = b->sptr->element_set.c_str();
1128 b->set_option("elementSetName", element_set_name);
1129 if (b->sptr->sru.length() && element_set_name)
1130 b->set_option("schema", element_set_name);
1133 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1135 Odr_int number_to_present,
1138 Odr_int *number_of_records_returned,
1141 Odr_oid *preferredRecordSyntax,
1142 const char *element_set_name)
1144 *number_of_records_returned = 0;
1145 Z_Records *records = 0;
1146 bool enable_pz2_retrieval = false; // whether target profile is used
1147 bool enable_pz2_transform = false; // whether XSLT is used as well
1148 bool assume_marc8_charset = false;
1150 prepare_elements(b, preferredRecordSyntax,
1152 enable_pz2_retrieval,
1153 enable_pz2_transform,
1154 assume_marc8_charset);
1156 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1157 enable_pz2_retrieval ? "yes" : "no",
1158 enable_pz2_transform ? "yes" : "no");
1160 if (start < 0 || number_to_present <=0)
1163 if (number_to_present > 10000)
1164 number_to_present = 10000;
1166 ZOOM_record *recs = (ZOOM_record *)
1167 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1169 b->present(start, number_to_present, recs, error, addinfo, odr);
1174 for (i = 0; i < number_to_present; i++)
1179 { // only return records if no error and at least one record
1180 char *odr_database = odr_strdup(odr,
1181 b->m_frontend_database.c_str());
1182 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1183 odr_malloc(odr, sizeof(*npl));
1184 *number_of_records_returned = i;
1185 npl->num_records = i;
1186 npl->records = (Z_NamePlusRecord **)
1187 odr_malloc(odr, i * sizeof(*npl->records));
1188 for (i = 0; i < number_to_present; i++)
1190 Z_NamePlusRecord *npr = 0;
1191 const char *addinfo;
1193 package.log("zoom", YLOG_LOG, "Inspecting record at position %d",
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