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 ZOOM_resultset_destroy(m_resultset);
283 m_resultset = ZOOM_connection_search(m_connection, q);
284 get_zoom_error(error, addinfo, odr);
286 *hits = ZOOM_resultset_size(m_resultset);
291 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
293 int *error, char **addinfo, ODR odr)
295 ZOOM_resultset_records(m_resultset, recs, start, number);
296 get_zoom_error(error, addinfo, odr);
299 void yf::Zoom::Backend::set_option(const char *name, const char *value)
301 ZOOM_connection_option_set(m_connection, name, value);
303 ZOOM_resultset_option_set(m_resultset, name, value);
306 void yf::Zoom::Backend::set_option(const char *name, std::string value)
308 set_option(name, value.c_str());
311 const char *yf::Zoom::Backend::get_option(const char *name)
313 return ZOOM_connection_option_get(m_connection, name);
316 yf::Zoom::Searchable::Searchable(CCL_bibset base)
319 use_turbomarc = true;
320 sortStrategy = "embed";
321 urlRecipe = "${md-electronic-url}";
322 ccl_bibset = ccl_qual_dup(base);
325 yf::Zoom::Searchable::~Searchable()
327 ccl_qual_rm(&ccl_bibset);
330 yf::Zoom::Frontend::Frontend(Impl *impl) :
331 m_p(impl), m_is_virtual(false), m_in_use(true)
335 yf::Zoom::Frontend::~Frontend()
339 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
341 boost::mutex::scoped_lock lock(m_mutex);
343 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
347 it = m_clients.find(package.session());
348 if (it == m_clients.end())
351 if (!it->second->m_in_use)
353 it->second->m_in_use = true;
356 m_cond_session_ready.wait(lock);
358 FrontendPtr f(new Frontend(this));
359 m_clients[package.session()] = f;
364 void yf::Zoom::Impl::release_frontend(mp::Package &package)
366 boost::mutex::scoped_lock lock(m_mutex);
367 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
369 it = m_clients.find(package.session());
370 if (it != m_clients.end())
372 if (package.session().is_closed())
378 it->second->m_in_use = false;
380 m_cond_session_ready.notify_all();
384 yf::Zoom::Impl::Impl() :
385 apdu_log(false), element_transform("pz2") , element_raw("raw")
387 bibset = ccl_qual_mk();
389 srand((unsigned int) time(0));
392 yf::Zoom::Impl::~Impl()
394 ccl_qual_rm(&bibset);
397 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
399 Zoom::SearchablePtr s(new Searchable(bibset));
401 for (ptr = ptr->children; ptr; ptr = ptr->next)
403 if (ptr->type != XML_ELEMENT_NODE)
405 if (!strcmp((const char *) ptr->name, "layer"))
407 else if (!strcmp((const char *) ptr->name,
410 s->authentication = mp::xml::get_text(ptr);
412 else if (!strcmp((const char *) ptr->name,
415 s->cfAuth = mp::xml::get_text(ptr);
417 else if (!strcmp((const char *) ptr->name,
420 s->cfProxy = mp::xml::get_text(ptr);
422 else if (!strcmp((const char *) ptr->name,
425 s->cfSubDB = mp::xml::get_text(ptr);
427 else if (!strcmp((const char *) ptr->name,
430 s->contentConnector = mp::xml::get_text(ptr);
432 else if (!strcmp((const char *) ptr->name, "udb"))
434 s->udb = mp::xml::get_text(ptr);
436 else if (!strcmp((const char *) ptr->name, "zurl"))
438 s->target = mp::xml::get_text(ptr);
440 else if (!strcmp((const char *) ptr->name, "sru"))
442 s->sru = mp::xml::get_text(ptr);
444 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
445 !strcmp((const char *) ptr->name, "sruVersion"))
447 s->sru_version = mp::xml::get_text(ptr);
449 else if (!strcmp((const char *) ptr->name,
452 s->query_encoding = mp::xml::get_text(ptr);
454 else if (!strcmp((const char *) ptr->name,
457 s->piggyback = mp::xml::get_bool(ptr, true);
459 else if (!strcmp((const char *) ptr->name,
462 s->request_syntax = mp::xml::get_text(ptr);
464 else if (!strcmp((const char *) ptr->name,
467 s->element_set = mp::xml::get_text(ptr);
469 else if (!strcmp((const char *) ptr->name,
472 s->record_encoding = mp::xml::get_text(ptr);
474 else if (!strcmp((const char *) ptr->name,
477 s->transform_xsl_fname = mp::xml::get_text(ptr);
479 else if (!strcmp((const char *) ptr->name,
482 s->transform_xsl_content = mp::xml::get_text(ptr);
484 else if (!strcmp((const char *) ptr->name,
487 s->urlRecipe = mp::xml::get_text(ptr);
489 else if (!strcmp((const char *) ptr->name,
492 ; // useTurboMarc is ignored
494 else if (!strncmp((const char *) ptr->name,
497 std::string value = mp::xml::get_text(ptr);
498 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
499 (const char *) ptr->name + 7);
501 else if (!strncmp((const char *) ptr->name,
504 std::string value = mp::xml::get_text(ptr);
505 s->sortmap[(const char *) ptr->name + 8] = value;
507 else if (!strcmp((const char *) ptr->name,
510 s->sortStrategy = mp::xml::get_text(ptr);
516 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
518 while (ptr && ptr->type != XML_ELEMENT_NODE)
523 if (!strcmp((const char *) ptr->name, "records"))
525 for (ptr = ptr->children; ptr; ptr = ptr->next)
527 if (ptr->type != XML_ELEMENT_NODE)
529 if (!strcmp((const char *) ptr->name, "record"))
531 SearchablePtr s = parse_torus_record(ptr);
534 std::string udb = s->udb;
539 throw mp::filter::FilterException
540 ("No udb for local torus record");
546 throw mp::filter::FilterException
548 + std::string((const char *) ptr->name)
549 + " in zoom filter inside element "
556 throw mp::filter::FilterException
558 + std::string((const char *) ptr->name)
559 + " in zoom filter inside element <torus>");
564 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
567 content_tmp_file = "/tmp/cf.XXXXXX.p";
572 for (ptr = ptr->children; ptr; ptr = ptr->next)
574 if (ptr->type != XML_ELEMENT_NODE)
576 else if (!strcmp((const char *) ptr->name, "torus"))
578 const struct _xmlAttr *attr;
579 for (attr = ptr->properties; attr; attr = attr->next)
581 if (!strcmp((const char *) attr->name, "url"))
582 torus_searchable_url = mp::xml::get_text(attr->children);
583 else if (!strcmp((const char *) attr->name, "content_url"))
584 torus_content_url = mp::xml::get_text(attr->children);
585 else if (!strcmp((const char *) attr->name, "realm"))
586 default_realm = mp::xml::get_text(attr->children);
587 else if (!strcmp((const char *) attr->name, "xsldir"))
588 xsldir = mp::xml::get_text(attr->children);
589 else if (!strcmp((const char *) attr->name, "element_transform"))
590 element_transform = mp::xml::get_text(attr->children);
591 else if (!strcmp((const char *) attr->name, "element_raw"))
592 element_raw = mp::xml::get_text(attr->children);
593 else if (!strcmp((const char *) attr->name, "proxy"))
594 proxy = mp::xml::get_text(attr->children);
596 throw mp::filter::FilterException(
597 "Bad attribute " + std::string((const char *)
600 // If content_url is not given, use value of searchable, to
601 // ensure backwards compatibility
602 if (!torus_content_url.length())
603 torus_content_url = torus_searchable_url;
604 configure_local_records(ptr->children, test_only);
606 else if (!strcmp((const char *) ptr->name, "cclmap"))
608 const char *addinfo = 0;
609 ccl_xml_config(bibset, ptr, &addinfo);
611 else if (!strcmp((const char *) ptr->name, "fieldmap"))
613 const struct _xmlAttr *attr;
614 std::string ccl_field;
615 std::string cql_field;
616 for (attr = ptr->properties; attr; attr = attr->next)
618 if (!strcmp((const char *) attr->name, "ccl"))
619 ccl_field = mp::xml::get_text(attr->children);
620 else if (!strcmp((const char *) attr->name, "cql"))
621 cql_field = mp::xml::get_text(attr->children);
623 throw mp::filter::FilterException(
624 "Bad attribute " + std::string((const char *)
627 if (cql_field.length())
628 fieldmap[cql_field] = ccl_field;
630 else if (!strcmp((const char *) ptr->name, "contentProxy"))
632 const struct _xmlAttr *attr;
633 for (attr = ptr->properties; attr; attr = attr->next)
635 if (!strcmp((const char *) attr->name, "server"))
636 content_proxy_server = mp::xml::get_text(attr->children);
637 else if (!strcmp((const char *) attr->name, "tmp_file"))
638 content_tmp_file = mp::xml::get_text(attr->children);
640 throw mp::filter::FilterException(
641 "Bad attribute " + std::string((const char *)
645 else if (!strcmp((const char *) ptr->name, "log"))
647 const struct _xmlAttr *attr;
648 for (attr = ptr->properties; attr; attr = attr->next)
650 if (!strcmp((const char *) attr->name, "apdu"))
651 apdu_log = mp::xml::get_bool(attr->children, false);
653 throw mp::filter::FilterException(
654 "Bad attribute " + std::string((const char *)
660 throw mp::filter::FilterException
662 + std::string((const char *) ptr->name)
663 + " in zoom filter");
668 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
670 int *error, char **addinfo,
672 std::string authentication,
676 if (b->sptr->contentConnector.length())
678 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
679 strcpy(fname, m_p->content_tmp_file.c_str());
680 char *xx = strstr(fname, "XXXXXX");
683 xx = fname + strlen(fname);
684 strcat(fname, "XXXXXX");
686 char tmp_char = xx[6];
687 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
690 FILE *file = fopen(fname, "w");
693 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
694 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
695 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
696 sprintf(*addinfo, "Could not create %s", fname);
700 b->content_session_id.assign(xx, 6);
701 WRBUF w = wrbuf_alloc();
702 wrbuf_puts(w, "#content_proxy\n");
703 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
704 if (authentication.length())
705 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
707 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
709 wrbuf_printf(w, "realm: %s\n", realm.c_str());
711 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
713 package.log("zoom", YLOG_LOG, "content file: %s", fname);
720 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
721 mp::Package &package,
722 std::string &database, int *error, char **addinfo, ODR odr,
725 std::list<BackendPtr>::const_iterator map_it;
726 if (m_backend && m_backend->m_frontend_database == database)
729 std::string input_args;
730 std::string torus_db;
731 size_t db_arg_pos = database.find(',');
732 if (db_arg_pos != std::string::npos)
734 torus_db = database.substr(0, db_arg_pos);
735 input_args = database.substr(db_arg_pos + 1);
740 std::string authentication;
741 std::string content_authentication;
743 std::string content_proxy;
744 std::string realm = m_p->default_realm;
746 const char *param_user = 0;
747 const char *param_password = 0;
748 const char *param_content_user = 0;
749 const char *param_content_password = 0;
750 const char *param_nocproxy = 0;
756 if (input_args.length())
757 no_parms = yaz_uri_to_array(input_args.c_str(),
758 odr, &names, &values);
759 // adding 10 because we'll be adding other URL args
760 const char **out_names = (const char **)
761 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
762 const char **out_values = (const char **)
763 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
765 // may be changed if it's a content connection
766 std::string torus_url = m_p->torus_searchable_url;
768 for (i = 0; i < no_parms; i++)
770 const char *name = names[i];
771 const char *value = values[i];
774 if (!strcmp(name, "user"))
776 else if (!strcmp(name, "password"))
777 param_password = value;
778 else if (!strcmp(name, "content-user"))
779 param_content_user = value;
780 else if (!strcmp(name, "content-password"))
781 param_content_password = value;
782 else if (!strcmp(name, "content-proxy"))
783 content_proxy = value;
784 else if (!strcmp(name, "nocproxy"))
785 param_nocproxy = value;
786 else if (!strcmp(name, "proxy"))
790 nmem_strsplit(odr->mem, ",", value, &dstr, &dnum);
791 if (*proxy_step >= dnum)
795 proxy = dstr[*proxy_step];
798 if (*proxy_step == dnum)
802 else if (!strcmp(name, "cproxysession"))
804 out_names[no_out_args] = name;
805 out_values[no_out_args++] = value;
806 torus_url = m_p->torus_content_url;
808 else if (!strcmp(name, "realm"))
810 else if (name[0] == 'x' && name[1] == '-')
812 out_names[no_out_args] = name;
813 out_values[no_out_args++] = value;
818 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
819 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
820 sprintf(msg, "Bad database argument: %s", name);
827 authentication = std::string(param_user);
829 authentication += "/" + std::string(param_password);
831 if (param_content_user)
833 content_authentication = std::string(param_content_user);
834 if (param_content_password)
835 content_authentication += "/" + std::string(param_content_password);
839 std::map<std::string,SearchablePtr>::iterator it;
840 it = m_p->s_map.find(torus_db);
841 if (it != m_p->s_map.end())
843 else if (torus_url.length() > 0)
845 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
849 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
850 *addinfo = odr_strdup(odr, database.c_str());
854 const xmlNode *ptr = xmlDocGetRootElement(doc);
856 { // presumably ptr is a records element node
857 // parse first record in document
858 for (ptr = ptr->children; ptr; ptr = ptr->next)
860 if (ptr->type == XML_ELEMENT_NODE
861 && !strcmp((const char *) ptr->name, "record"))
865 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
866 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
867 sprintf(*addinfo, "multiple records for udb=%s",
873 sptr = m_p->parse_torus_record(ptr);
882 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
883 *addinfo = odr_strdup(odr, database.c_str());
888 xsltStylesheetPtr xsp = 0;
889 if (sptr->transform_xsl_content.length())
891 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
892 sptr->transform_xsl_content.length());
895 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
896 *addinfo = (char *) odr_malloc(odr, 40);
897 sprintf(*addinfo, "xmlParseMemory failed");
901 xsp = xsltParseStylesheetDoc(xsp_doc);
904 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
905 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
911 else if (sptr->transform_xsl_fname.length())
913 const char *path = 0;
915 if (m_p->xsldir.length())
916 path = m_p->xsldir.c_str();
918 path = m_p->file_path.c_str();
922 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
928 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
930 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
931 sprintf(*addinfo, "File could not be read: %s",
932 sptr->transform_xsl_fname.c_str());
936 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
939 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
940 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
941 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
945 xsp = xsltParseStylesheetDoc(xsp_doc);
948 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
949 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
958 BackendPtr b(new Backend(sptr));
961 b->m_frontend_database = database;
962 b->enable_cproxy = param_nocproxy ? false : true;
964 if (sptr->query_encoding.length())
965 b->set_option("rpnCharset", sptr->query_encoding);
967 b->set_option("timeout", "40");
970 b->set_option("apdulog", "1");
972 if (sptr->piggyback && sptr->sru.length())
973 b->set_option("count", "1"); /* some SRU servers INSIST on getting
974 maximumRecords > 0 */
975 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
977 if (authentication.length() == 0)
978 authentication = sptr->authentication;
980 if (proxy.length() == 0)
981 proxy = sptr->cfProxy;
983 if (sptr->cfAuth.length())
986 b->set_option("user", sptr->cfAuth);
987 if (authentication.length())
989 size_t found = authentication.find('/');
990 if (found != std::string::npos)
992 out_names[no_out_args] = "user";
993 out_values[no_out_args++] =
994 odr_strdup(odr, authentication.substr(0, found).c_str());
996 out_names[no_out_args] = "password";
997 out_values[no_out_args++] =
998 odr_strdup(odr, authentication.substr(found+1).c_str());
1002 out_names[no_out_args] = "user";
1003 out_values[no_out_args++] =
1004 odr_strdup(odr, authentication.c_str());
1009 out_names[no_out_args] = "proxy";
1010 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1012 if (sptr->cfSubDB.length())
1014 out_names[no_out_args] = "subdatabase";
1015 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1019 out_names[no_out_args] = "nocproxy";
1020 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1025 size_t found = authentication.find('/');
1027 if (sptr->sru.length() && found != std::string::npos)
1029 b->set_option("user", authentication.substr(0, found));
1030 b->set_option("password", authentication.substr(found+1));
1033 b->set_option("user", authentication);
1036 b->set_option("proxy", proxy);
1039 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1042 if (sptr->sru.length())
1044 url = "http://" + sptr->target;
1045 b->set_option("sru", sptr->sru);
1047 if (sptr->sru_version.length())
1048 b->set_option("sru_version", sptr->sru_version);
1057 out_names[no_out_args] = 0; // terminate list
1059 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1060 (char **) out_values);
1061 url += "," + std::string(x_args);
1063 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1064 b->connect(url, error, addinfo, odr);
1065 if (*error == 0 && b->enable_cproxy)
1066 create_content_session(package, b, error, addinfo, odr,
1067 content_authentication.length() ?
1068 content_authentication : authentication,
1069 content_proxy.length() ? content_proxy : proxy,
1076 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1077 Odr_oid *preferredRecordSyntax,
1078 const char *element_set_name,
1079 bool &enable_pz2_retrieval,
1080 bool &enable_pz2_transform,
1081 bool &assume_marc8_charset)
1084 char oid_name_str[OID_STR_MAX];
1085 const char *syntax_name = 0;
1087 if (preferredRecordSyntax &&
1088 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1089 && element_set_name)
1091 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1093 enable_pz2_retrieval = true;
1094 enable_pz2_transform = true;
1096 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1098 enable_pz2_retrieval = true;
1102 if (enable_pz2_retrieval)
1104 std::string configured_request_syntax = b->sptr->request_syntax;
1105 if (configured_request_syntax.length())
1107 syntax_name = configured_request_syntax.c_str();
1108 const Odr_oid *syntax_oid =
1109 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1110 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1111 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1112 assume_marc8_charset = true;
1115 else if (preferredRecordSyntax)
1117 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1119 if (b->sptr->sru.length())
1120 syntax_name = "XML";
1122 b->set_option("preferredRecordSyntax", syntax_name);
1124 if (enable_pz2_retrieval)
1126 element_set_name = 0;
1127 if (b->sptr->element_set.length())
1128 element_set_name = b->sptr->element_set.c_str();
1131 b->set_option("elementSetName", element_set_name);
1132 if (b->sptr->sru.length() && element_set_name)
1133 b->set_option("schema", element_set_name);
1136 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1138 Odr_int number_to_present,
1141 Odr_int *number_of_records_returned,
1144 Odr_oid *preferredRecordSyntax,
1145 const char *element_set_name)
1147 *number_of_records_returned = 0;
1148 Z_Records *records = 0;
1149 bool enable_pz2_retrieval = false; // whether target profile is used
1150 bool enable_pz2_transform = false; // whether XSLT is used as well
1151 bool assume_marc8_charset = false;
1153 prepare_elements(b, preferredRecordSyntax,
1155 enable_pz2_retrieval,
1156 enable_pz2_transform,
1157 assume_marc8_charset);
1159 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1160 enable_pz2_retrieval ? "yes" : "no",
1161 enable_pz2_transform ? "yes" : "no");
1163 if (start < 0 || number_to_present <=0)
1166 if (number_to_present > 10000)
1167 number_to_present = 10000;
1169 ZOOM_record *recs = (ZOOM_record *)
1170 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1172 b->present(start, number_to_present, recs, error, addinfo, odr);
1177 for (i = 0; i < number_to_present; i++)
1182 { // only return records if no error and at least one record
1183 char *odr_database = odr_strdup(odr,
1184 b->m_frontend_database.c_str());
1185 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1186 odr_malloc(odr, sizeof(*npl));
1187 *number_of_records_returned = i;
1188 npl->num_records = i;
1189 npl->records = (Z_NamePlusRecord **)
1190 odr_malloc(odr, i * sizeof(*npl->records));
1191 for (i = 0; i < number_to_present; i++)
1193 Z_NamePlusRecord *npr = 0;
1194 const char *addinfo;
1196 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1197 &addinfo, 0 /* diagset */);
1201 log_diagnostic(package, sur_error, addinfo);
1202 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1205 else if (enable_pz2_retrieval)
1207 char rec_type_str[100];
1208 const char *record_encoding = 0;
1210 if (b->sptr->record_encoding.length())
1211 record_encoding = b->sptr->record_encoding.c_str();
1212 else if (assume_marc8_charset)
1213 record_encoding = "marc8";
1215 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1216 if (record_encoding)
1218 strcat(rec_type_str, "; charset=");
1219 strcat(rec_type_str, record_encoding);
1222 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1225 xmlChar *xmlrec_buf = 0;
1226 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1228 if (!rec_buf && !npr)
1230 std::string addinfo("ZOOM_record_get failed for type ");
1232 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1233 addinfo += rec_type_str;
1234 log_diagnostic(package, error, addinfo.c_str());
1235 npr = zget_surrogateDiagRec(odr, odr_database,
1236 error, addinfo.c_str());
1240 package.log_write(rec_buf, rec_len);
1241 package.log_write("\r\n", 2);
1244 if (rec_buf && b->xsp && enable_pz2_transform)
1246 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1249 const char *addinfo = "xml parse failed for record";
1250 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1251 log_diagnostic(package, error, addinfo);
1252 npr = zget_surrogateDiagRec(
1253 odr, odr_database, error, addinfo);
1258 xsltApplyStylesheet(b->xsp, rec_doc, 0);
1262 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1264 rec_buf = (const char *) xmlrec_buf;
1265 package.log("zoom", YLOG_LOG, "xslt successful");
1266 package.log_write(rec_buf, rec_len);
1268 xmlFreeDoc(rec_res);
1272 std::string addinfo;
1274 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1276 addinfo = "xslt apply failed for "
1277 + b->sptr->transform_xsl_fname;
1278 log_diagnostic(package, error, addinfo.c_str());
1279 npr = zget_surrogateDiagRec(
1280 odr, odr_database, error, addinfo.c_str());
1282 xmlFreeDoc(rec_doc);
1286 if (rec_buf && b->enable_cproxy)
1288 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1290 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1291 if (res.length() && b->content_session_id.length())
1293 size_t off = res.find_first_of("://");
1294 if (off != std::string::npos)
1297 sprintf(tmp, "%s.%s/",
1298 b->content_session_id.c_str(),
1299 m_p->content_proxy_server.c_str());
1300 res.insert(off + 3, tmp);
1305 xmlNode *ptr = xmlDocGetRootElement(doc);
1306 while (ptr && ptr->type != XML_ELEMENT_NODE)
1309 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1310 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1312 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1316 xmlFree(xmlrec_buf);
1318 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1319 rec_buf = (const char *) xmlrec_buf;
1326 npr = zget_surrogateDiagRec(
1328 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1332 npr = (Z_NamePlusRecord *)
1333 odr_malloc(odr, sizeof(*npr));
1334 npr->databaseName = odr_database;
1335 npr->which = Z_NamePlusRecord_databaseRecord;
1336 npr->u.databaseRecord =
1337 z_ext_record_xml(odr, rec_buf, rec_len);
1341 xmlFree(xmlrec_buf);
1346 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1349 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1350 npr->databaseName = odr_database;
1351 npr->which = Z_NamePlusRecord_databaseRecord;
1352 npr->u.databaseRecord = ext;
1356 npr = zget_surrogateDiagRec(
1358 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1359 "ZOOM_record, type ext");
1362 npl->records[i] = npr;
1364 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1365 records->which = Z_Records_DBOSD;
1366 records->u.databaseOrSurDiagnostics = npl;
1371 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1374 struct cql_node *r = 0;
1382 std::map<std::string,std::string>::const_iterator it;
1383 it = fieldmap.find(cn->u.st.index);
1384 if (it == fieldmap.end())
1386 if (it->second.length())
1387 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1393 r = convert_cql_fields(cn->u.boolean.left, odr);
1395 r = convert_cql_fields(cn->u.boolean.right, odr);
1398 r = convert_cql_fields(cn->u.sort.search, odr);
1404 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1405 int error, const char *addinfo)
1407 const char *err_msg = yaz_diag_bib1_str(error);
1409 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1410 error, err_msg, addinfo);
1412 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1416 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1418 Z_GDU *gdu = package.request().get();
1419 Z_APDU *apdu_req = gdu->u.z3950;
1420 Z_APDU *apdu_res = 0;
1422 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1423 if (sr->num_databaseNames != 1)
1425 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
1426 log_diagnostic(package, error, 0);
1427 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
1428 package.response() = apdu_res;
1438 std::string db(sr->databaseNames[0]);
1440 BackendPtr b = get_backend_from_databases(package, db, &error,
1441 &addinfo, odr, &proxy_step);
1442 if (error && proxy_step)
1444 package.log("zoom", YLOG_WARN,
1445 "create backend failed: trying next proxy");
1450 log_diagnostic(package, error, addinfo);
1451 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1452 package.response() = apdu_res;
1456 b->set_option("setname", "default");
1458 bool enable_pz2_retrieval = false;
1459 bool enable_pz2_transform = false;
1460 bool assume_marc8_charset = false;
1461 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1462 enable_pz2_retrieval,
1463 enable_pz2_transform,
1464 assume_marc8_charset);
1467 Z_Query *query = sr->query;
1468 WRBUF ccl_wrbuf = 0;
1469 WRBUF pqf_wrbuf = 0;
1470 std::string sortkeys;
1472 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1475 pqf_wrbuf = wrbuf_alloc();
1476 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1478 else if (query->which == Z_Query_type_2)
1481 ccl_wrbuf = wrbuf_alloc();
1482 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1483 query->u.type_2->len);
1485 else if (query->which == Z_Query_type_104 &&
1486 query->u.type_104->which == Z_External_CQL)
1489 const char *cql = query->u.type_104->u.cql;
1490 CQL_parser cp = cql_parser_create();
1491 int r = cql_parser_string(cp, cql);
1492 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1495 cql_parser_destroy(cp);
1496 error = YAZ_BIB1_MALFORMED_QUERY;
1497 const char *addinfo = "CQL syntax error";
1498 log_diagnostic(package, error, addinfo);
1500 odr.create_searchResponse(apdu_req, error, addinfo);
1501 package.response() = apdu_res;
1504 struct cql_node *cn = cql_parser_result(cp);
1505 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1508 // hopefully we are getting a ptr to a index+relation+term node
1509 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1511 if (cn_error->which == CQL_NODE_ST)
1512 addinfo = cn_error->u.st.index;
1514 log_diagnostic(package, error, addinfo);
1515 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1516 package.response() = apdu_res;
1517 cql_parser_destroy(cp);
1521 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1524 error = YAZ_BIB1_MALFORMED_QUERY;
1525 const char *addinfo = "CQL to CCL conversion error";
1527 log_diagnostic(package, error, addinfo);
1528 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1529 package.response() = apdu_res;
1530 cql_parser_destroy(cp);
1534 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1535 if (cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf))
1537 error = YAZ_BIB1_ILLEGAL_SORT_RELATION;
1538 const char *addinfo = "CQL to CCL sortby conversion";
1540 log_diagnostic(package, error, addinfo);
1541 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1542 package.response() = apdu_res;
1543 wrbuf_destroy(sru_sortkeys_wrbuf);
1544 cql_parser_destroy(cp);
1547 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1548 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1550 wrbuf_destroy(sru_sortkeys_wrbuf);
1552 ccl_wrbuf = wrbuf_alloc();
1553 wrbuf_puts(ccl_wrbuf, ccl_buf);
1555 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1556 yaz_tok_parse_t tp =
1557 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1558 yaz_tok_cfg_destroy(tc);
1560 /* go through sortspec and map fields */
1561 int token = yaz_tok_move(tp);
1562 while (token != YAZ_TOK_EOF)
1564 if (token == YAZ_TOK_STRING)
1566 const char *field = yaz_tok_parse_string(tp);
1567 std::map<std::string,std::string>::iterator it;
1568 it = b->sptr->sortmap.find(field);
1569 if (it != b->sptr->sortmap.end())
1570 sortkeys += it->second;
1575 token = yaz_tok_move(tp);
1576 if (token == YAZ_TOK_STRING)
1578 sortkeys += yaz_tok_parse_string(tp);
1580 if (token != YAZ_TOK_EOF)
1583 token = yaz_tok_move(tp);
1586 yaz_tok_parse_destroy(tp);
1587 wrbuf_destroy(sort_spec_wrbuf);
1589 cql_parser_destroy(cp);
1593 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1594 const char *addinfo = 0;
1595 log_diagnostic(package, error, addinfo);
1596 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1597 package.response() = apdu_res;
1604 assert(pqf_wrbuf == 0);
1606 struct ccl_rpn_node *cn;
1607 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1608 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1610 wrbuf_destroy(ccl_wrbuf);
1613 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1614 error = YAZ_BIB1_MALFORMED_QUERY;
1618 case CCL_ERR_UNKNOWN_QUAL:
1619 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1621 case CCL_ERR_TRUNC_NOT_LEFT:
1622 case CCL_ERR_TRUNC_NOT_RIGHT:
1623 case CCL_ERR_TRUNC_NOT_BOTH:
1624 error = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1627 log_diagnostic(package, error, addinfo);
1628 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1629 package.response() = apdu_res;
1632 pqf_wrbuf = wrbuf_alloc();
1633 ccl_pquery(pqf_wrbuf, cn);
1634 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1640 ZOOM_query q = ZOOM_query_create();
1641 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1643 if (b->get_option("sru"))
1647 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1648 WRBUF wrb = wrbuf_alloc();
1650 if (!strcmp(b->get_option("sru"), "solr"))
1652 solr_transform_t cqlt = solr_transform_create();
1654 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1656 solr_transform_close(cqlt);
1660 cql_transform_t cqlt = cql_transform_create();
1662 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1664 cql_transform_close(cqlt);
1668 ZOOM_query_cql(q, wrbuf_cstr(wrb));
1669 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
1670 b->search(q, &hits, &error, &addinfo, odr);
1672 ZOOM_query_destroy(q);
1675 wrbuf_destroy(pqf_wrbuf);
1678 error = YAZ_BIB1_MALFORMED_QUERY;
1679 const char *addinfo = "can not convert from RPN to CQL/SOLR";
1680 log_diagnostic(package, error, addinfo);
1681 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1682 package.response() = apdu_res;
1688 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
1689 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1690 b->search(q, &hits, &error, &addinfo, odr);
1691 ZOOM_query_destroy(q);
1692 wrbuf_destroy(pqf_wrbuf);
1695 if (error && proxy_step)
1697 // reset below prevent reuse in get_backend_from_databases
1699 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
1703 const char *element_set_name = 0;
1704 Odr_int number_to_present = 0;
1706 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1708 Odr_int number_of_records_returned = 0;
1709 Z_Records *records = get_records(
1711 0, number_to_present, &error, &addinfo,
1712 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1715 log_diagnostic(package, error, addinfo);
1716 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1719 apdu_res->u.searchResponse->records = records;
1720 apdu_res->u.searchResponse->numberOfRecordsReturned =
1721 odr_intdup(odr, number_of_records_returned);
1723 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1724 package.response() = apdu_res;
1727 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1729 Z_GDU *gdu = package.request().get();
1730 Z_APDU *apdu_req = gdu->u.z3950;
1731 Z_APDU *apdu_res = 0;
1732 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1737 package.response() = odr.create_presentResponse(
1738 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1741 const char *element_set_name = 0;
1742 Z_RecordComposition *comp = pr->recordComposition;
1743 if (comp && comp->which != Z_RecordComp_simple)
1745 package.response() = odr.create_presentResponse(
1747 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1750 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1751 element_set_name = comp->u.simple->u.generic;
1752 Odr_int number_of_records_returned = 0;
1755 Z_Records *records = get_records(package,
1756 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1757 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1758 pr->preferredRecordSyntax, element_set_name);
1760 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1763 apdu_res->u.presentResponse->records = records;
1764 apdu_res->u.presentResponse->numberOfRecordsReturned =
1765 odr_intdup(odr, number_of_records_returned);
1767 package.response() = apdu_res;
1770 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1772 Z_GDU *gdu = package.request().get();
1775 else if (gdu->which == Z_GDU_Z3950)
1777 Z_APDU *apdu_req = gdu->u.z3950;
1780 wrbuf_rewind(m_backend->m_apdu_wrbuf);
1781 if (apdu_req->which == Z_APDU_initRequest)
1784 package.response() = odr.create_close(
1786 Z_Close_protocolError,
1789 else if (apdu_req->which == Z_APDU_searchRequest)
1791 handle_search(package);
1793 else if (apdu_req->which == Z_APDU_presentRequest)
1795 handle_present(package);
1800 package.response() = odr.create_close(
1802 Z_Close_protocolError,
1803 "zoom filter cannot handle this APDU");
1804 package.session().close();
1808 WRBUF w = m_backend->m_apdu_wrbuf;
1809 package.log_write(wrbuf_buf(w), wrbuf_len(w));
1814 package.session().close();
1818 void yf::Zoom::Impl::process(mp::Package &package)
1820 FrontendPtr f = get_frontend(package);
1821 Z_GDU *gdu = package.request().get();
1823 if (f->m_is_virtual)
1825 f->handle_package(package);
1827 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1830 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1831 f->m_init_gdu = gdu;
1834 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1835 Z_InitResponse *resp = apdu->u.initResponse;
1838 static const int masks[] = {
1843 for (i = 0; masks[i] != -1; i++)
1844 if (ODR_MASK_GET(req->options, masks[i]))
1845 ODR_MASK_SET(resp->options, masks[i]);
1847 static const int versions[] = {
1848 Z_ProtocolVersion_1,
1849 Z_ProtocolVersion_2,
1850 Z_ProtocolVersion_3,
1853 for (i = 0; versions[i] != -1; i++)
1854 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1855 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1859 *resp->preferredMessageSize = *req->preferredMessageSize;
1860 *resp->maximumRecordSize = *req->maximumRecordSize;
1862 package.response() = apdu;
1863 f->m_is_virtual = true;
1868 release_frontend(package);
1872 static mp::filter::Base* filter_creator()
1874 return new mp::filter::Zoom;
1878 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1889 * c-file-style: "Stroustrup"
1890 * indent-tabs-mode: nil
1892 * vim: shiftwidth=4 tabstop=8 expandtab