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,
135 void prepare_elements(BackendPtr b,
136 Odr_oid *preferredRecordSyntax,
137 const char *element_set_name,
138 bool &enable_pz2_retrieval,
139 bool &enable_pz2_transform,
140 bool &assume_marc8_charset);
142 Z_Records *get_records(Package &package,
144 Odr_int number_to_present,
147 Odr_int *number_of_records_returned,
148 ODR odr, BackendPtr b,
149 Odr_oid *preferredRecordSyntax,
150 const char *element_set_name);
152 void log_diagnostic(mp::Package &package,
153 int error, const char *addinfo);
155 Frontend(Impl *impl);
159 friend class Frontend;
163 void process(metaproxy_1::Package & package);
164 void configure(const xmlNode * ptr, bool test_only,
167 void configure_local_records(const xmlNode * ptr, bool test_only);
168 FrontendPtr get_frontend(mp::Package &package);
169 void release_frontend(mp::Package &package);
170 SearchablePtr parse_torus_record(const xmlNode *ptr);
171 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
172 std::map<mp::Session, FrontendPtr> m_clients;
173 boost::mutex m_mutex;
174 boost::condition m_cond_session_ready;
175 std::string torus_searchable_url;
176 std::string torus_content_url;
177 std::string default_realm;
178 std::map<std::string,std::string> fieldmap;
180 std::string file_path;
181 std::string content_proxy_server;
182 std::string content_tmp_file;
185 std::string element_transform;
186 std::string element_raw;
188 std::map<std::string,SearchablePtr> s_map;
193 // define Pimpl wrapper forwarding to Impl
195 yf::Zoom::Zoom() : m_p(new Impl)
200 { // must have a destructor because of boost::scoped_ptr
203 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only,
206 m_p->configure(xmlnode, test_only, path);
209 void yf::Zoom::process(mp::Package &package) const
211 m_p->process(package);
215 // define Implementation stuff
217 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
219 m_apdu_wrbuf = wrbuf_alloc();
220 m_connection = ZOOM_connection_create(0);
221 ZOOM_connection_save_apdu_wrbuf(m_connection, m_apdu_wrbuf);
224 enable_cproxy = true;
227 yf::Zoom::Backend::~Backend()
230 xsltFreeStylesheet(xsp);
231 ZOOM_connection_destroy(m_connection);
232 ZOOM_resultset_destroy(m_resultset);
236 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
240 const char *zoom_addinfo = 0;
241 const char *dset = 0;
242 int error0 = ZOOM_connection_error_x(m_connection, &msg,
243 &zoom_addinfo, &dset);
249 if (!strcmp(dset, "info:srw/diagnostic/1"))
250 *error = yaz_diag_srw_to_bib1(error0);
251 else if (!strcmp(dset, "Bib-1"))
254 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
256 *addinfo = (char *) odr_malloc(
257 odr, 30 + strlen(dset) + strlen(msg) +
258 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
260 if (zoom_addinfo && *zoom_addinfo)
262 strcpy(*addinfo, zoom_addinfo);
263 strcat(*addinfo, " ");
265 sprintf(*addinfo + strlen(*addinfo), "(%s %d %s)", dset, error0, msg);
269 void yf::Zoom::Backend::connect(std::string zurl,
270 int *error, char **addinfo,
273 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
274 get_zoom_error(error, addinfo, odr);
277 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
278 int *error, char **addinfo, ODR odr)
280 m_resultset = ZOOM_connection_search(m_connection, q);
281 get_zoom_error(error, addinfo, odr);
283 *hits = ZOOM_resultset_size(m_resultset);
288 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
290 int *error, char **addinfo, ODR odr)
292 ZOOM_resultset_records(m_resultset, recs, start, number);
293 get_zoom_error(error, addinfo, odr);
296 void yf::Zoom::Backend::set_option(const char *name, const char *value)
298 ZOOM_connection_option_set(m_connection, name, value);
300 ZOOM_resultset_option_set(m_resultset, name, value);
303 void yf::Zoom::Backend::set_option(const char *name, std::string value)
305 set_option(name, value.c_str());
308 const char *yf::Zoom::Backend::get_option(const char *name)
310 return ZOOM_connection_option_get(m_connection, name);
313 yf::Zoom::Searchable::Searchable(CCL_bibset base)
316 use_turbomarc = true;
317 sortStrategy = "embed";
318 urlRecipe = "${md-electronic-url}";
319 ccl_bibset = ccl_qual_dup(base);
322 yf::Zoom::Searchable::~Searchable()
324 ccl_qual_rm(&ccl_bibset);
327 yf::Zoom::Frontend::Frontend(Impl *impl) :
328 m_p(impl), m_is_virtual(false), m_in_use(true)
332 yf::Zoom::Frontend::~Frontend()
336 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
338 boost::mutex::scoped_lock lock(m_mutex);
340 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
344 it = m_clients.find(package.session());
345 if (it == m_clients.end())
348 if (!it->second->m_in_use)
350 it->second->m_in_use = true;
353 m_cond_session_ready.wait(lock);
355 FrontendPtr f(new Frontend(this));
356 m_clients[package.session()] = f;
361 void yf::Zoom::Impl::release_frontend(mp::Package &package)
363 boost::mutex::scoped_lock lock(m_mutex);
364 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
366 it = m_clients.find(package.session());
367 if (it != m_clients.end())
369 if (package.session().is_closed())
375 it->second->m_in_use = false;
377 m_cond_session_ready.notify_all();
381 yf::Zoom::Impl::Impl() :
382 apdu_log(false), element_transform("pz2") , element_raw("raw")
384 bibset = ccl_qual_mk();
386 srand((unsigned int) time(0));
389 yf::Zoom::Impl::~Impl()
391 ccl_qual_rm(&bibset);
394 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
396 Zoom::SearchablePtr s(new Searchable(bibset));
398 for (ptr = ptr->children; ptr; ptr = ptr->next)
400 if (ptr->type != XML_ELEMENT_NODE)
402 if (!strcmp((const char *) ptr->name, "layer"))
404 else if (!strcmp((const char *) ptr->name,
407 s->authentication = mp::xml::get_text(ptr);
409 else if (!strcmp((const char *) ptr->name,
412 s->cfAuth = mp::xml::get_text(ptr);
414 else if (!strcmp((const char *) ptr->name,
417 s->cfProxy = mp::xml::get_text(ptr);
419 else if (!strcmp((const char *) ptr->name,
422 s->cfSubDB = mp::xml::get_text(ptr);
424 else if (!strcmp((const char *) ptr->name,
427 s->contentConnector = mp::xml::get_text(ptr);
429 else if (!strcmp((const char *) ptr->name, "udb"))
431 s->udb = mp::xml::get_text(ptr);
433 else if (!strcmp((const char *) ptr->name, "zurl"))
435 s->target = mp::xml::get_text(ptr);
437 else if (!strcmp((const char *) ptr->name, "sru"))
439 s->sru = mp::xml::get_text(ptr);
441 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
442 !strcmp((const char *) ptr->name, "sruVersion"))
444 s->sru_version = mp::xml::get_text(ptr);
446 else if (!strcmp((const char *) ptr->name,
449 s->query_encoding = mp::xml::get_text(ptr);
451 else if (!strcmp((const char *) ptr->name,
454 s->piggyback = mp::xml::get_bool(ptr, true);
456 else if (!strcmp((const char *) ptr->name,
459 s->request_syntax = mp::xml::get_text(ptr);
461 else if (!strcmp((const char *) ptr->name,
464 s->element_set = mp::xml::get_text(ptr);
466 else if (!strcmp((const char *) ptr->name,
469 s->record_encoding = mp::xml::get_text(ptr);
471 else if (!strcmp((const char *) ptr->name,
474 s->transform_xsl_fname = mp::xml::get_text(ptr);
476 else if (!strcmp((const char *) ptr->name,
479 s->transform_xsl_content = mp::xml::get_text(ptr);
481 else if (!strcmp((const char *) ptr->name,
484 s->urlRecipe = mp::xml::get_text(ptr);
486 else if (!strcmp((const char *) ptr->name,
489 ; // useTurboMarc is ignored
491 else if (!strncmp((const char *) ptr->name,
494 std::string value = mp::xml::get_text(ptr);
495 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
496 (const char *) ptr->name + 7);
498 else if (!strncmp((const char *) ptr->name,
501 std::string value = mp::xml::get_text(ptr);
502 s->sortmap[(const char *) ptr->name + 8] = value;
504 else if (!strcmp((const char *) ptr->name,
507 s->sortStrategy = mp::xml::get_text(ptr);
513 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
515 while (ptr && ptr->type != XML_ELEMENT_NODE)
520 if (!strcmp((const char *) ptr->name, "records"))
522 for (ptr = ptr->children; ptr; ptr = ptr->next)
524 if (ptr->type != XML_ELEMENT_NODE)
526 if (!strcmp((const char *) ptr->name, "record"))
528 SearchablePtr s = parse_torus_record(ptr);
531 std::string udb = s->udb;
536 throw mp::filter::FilterException
537 ("No udb for local torus record");
543 throw mp::filter::FilterException
545 + std::string((const char *) ptr->name)
546 + " in zoom filter inside element "
553 throw mp::filter::FilterException
555 + std::string((const char *) ptr->name)
556 + " in zoom filter inside element <torus>");
561 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
564 content_tmp_file = "/tmp/cf.XXXXXX.p";
569 for (ptr = ptr->children; ptr; ptr = ptr->next)
571 if (ptr->type != XML_ELEMENT_NODE)
573 else if (!strcmp((const char *) ptr->name, "torus"))
575 const struct _xmlAttr *attr;
576 for (attr = ptr->properties; attr; attr = attr->next)
578 if (!strcmp((const char *) attr->name, "url"))
579 torus_searchable_url = mp::xml::get_text(attr->children);
580 else if (!strcmp((const char *) attr->name, "content_url"))
581 torus_content_url = mp::xml::get_text(attr->children);
582 else if (!strcmp((const char *) attr->name, "realm"))
583 default_realm = mp::xml::get_text(attr->children);
584 else if (!strcmp((const char *) attr->name, "xsldir"))
585 xsldir = mp::xml::get_text(attr->children);
586 else if (!strcmp((const char *) attr->name, "element_transform"))
587 element_transform = mp::xml::get_text(attr->children);
588 else if (!strcmp((const char *) attr->name, "element_raw"))
589 element_raw = mp::xml::get_text(attr->children);
590 else if (!strcmp((const char *) attr->name, "proxy"))
591 proxy = mp::xml::get_text(attr->children);
593 throw mp::filter::FilterException(
594 "Bad attribute " + std::string((const char *)
597 // If content_url is not given, use value of searchable, to
598 // ensure backwards compatibility
599 if (!torus_content_url.length())
600 torus_content_url = torus_searchable_url;
601 configure_local_records(ptr->children, test_only);
603 else if (!strcmp((const char *) ptr->name, "cclmap"))
605 const char *addinfo = 0;
606 ccl_xml_config(bibset, ptr, &addinfo);
608 else if (!strcmp((const char *) ptr->name, "fieldmap"))
610 const struct _xmlAttr *attr;
611 std::string ccl_field;
612 std::string cql_field;
613 for (attr = ptr->properties; attr; attr = attr->next)
615 if (!strcmp((const char *) attr->name, "ccl"))
616 ccl_field = mp::xml::get_text(attr->children);
617 else if (!strcmp((const char *) attr->name, "cql"))
618 cql_field = mp::xml::get_text(attr->children);
620 throw mp::filter::FilterException(
621 "Bad attribute " + std::string((const char *)
624 if (cql_field.length())
625 fieldmap[cql_field] = ccl_field;
627 else if (!strcmp((const char *) ptr->name, "contentProxy"))
629 const struct _xmlAttr *attr;
630 for (attr = ptr->properties; attr; attr = attr->next)
632 if (!strcmp((const char *) attr->name, "server"))
633 content_proxy_server = mp::xml::get_text(attr->children);
634 else if (!strcmp((const char *) attr->name, "tmp_file"))
635 content_tmp_file = mp::xml::get_text(attr->children);
637 throw mp::filter::FilterException(
638 "Bad attribute " + std::string((const char *)
642 else if (!strcmp((const char *) ptr->name, "log"))
644 const struct _xmlAttr *attr;
645 for (attr = ptr->properties; attr; attr = attr->next)
647 if (!strcmp((const char *) attr->name, "apdu"))
648 apdu_log = mp::xml::get_bool(attr->children, false);
650 throw mp::filter::FilterException(
651 "Bad attribute " + std::string((const char *)
657 throw mp::filter::FilterException
659 + std::string((const char *) ptr->name)
660 + " in zoom filter");
665 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
667 int *error, char **addinfo,
669 std::string authentication,
672 if (b->sptr->contentConnector.length())
674 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
675 strcpy(fname, m_p->content_tmp_file.c_str());
676 char *xx = strstr(fname, "XXXXXX");
679 xx = fname + strlen(fname);
680 strcat(fname, "XXXXXX");
682 char tmp_char = xx[6];
683 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
686 FILE *file = fopen(fname, "w");
689 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
690 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
691 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
692 sprintf(*addinfo, "Could not create %s", fname);
696 b->content_session_id.assign(xx, 6);
697 WRBUF w = wrbuf_alloc();
698 wrbuf_puts(w, "#content_proxy\n");
699 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
700 if (authentication.length())
701 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
703 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
705 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
707 package.log("zoom", YLOG_LOG, "content file: %s", fname);
713 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
714 mp::Package &package,
715 std::string &database, int *error, char **addinfo, ODR odr,
718 std::list<BackendPtr>::const_iterator map_it;
719 if (m_backend && m_backend->m_frontend_database == database)
722 std::string input_args;
723 std::string torus_db;
724 size_t db_arg_pos = database.find(',');
725 if (db_arg_pos != std::string::npos)
727 torus_db = database.substr(0, db_arg_pos);
728 input_args = database.substr(db_arg_pos + 1);
733 std::string authentication;
734 std::string content_authentication;
736 std::string content_proxy;
737 std::string realm = m_p->default_realm;
739 const char *param_user = 0;
740 const char *param_password = 0;
741 const char *param_content_user = 0;
742 const char *param_content_password = 0;
743 const char *param_nocproxy = 0;
749 if (input_args.length())
750 no_parms = yaz_uri_to_array(input_args.c_str(),
751 odr, &names, &values);
752 // adding 10 because we'll be adding other URL args
753 const char **out_names = (const char **)
754 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
755 const char **out_values = (const char **)
756 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
758 // may be changed if it's a content connection
759 std::string torus_url = m_p->torus_searchable_url;
761 for (i = 0; i < no_parms; i++)
763 const char *name = names[i];
764 const char *value = values[i];
767 if (!strcmp(name, "user"))
769 else if (!strcmp(name, "password"))
770 param_password = value;
771 else if (!strcmp(name, "content-user"))
772 param_content_user = value;
773 else if (!strcmp(name, "content-password"))
774 param_content_password = value;
775 else if (!strcmp(name, "content-proxy"))
776 content_proxy = value;
777 else if (!strcmp(name, "nocproxy"))
778 param_nocproxy = value;
779 else if (!strcmp(name, "proxy"))
783 nmem_strsplit(odr->mem, ",", value, &dstr, &dnum);
784 if (*proxy_step >= dnum)
788 proxy = dstr[*proxy_step];
791 if (*proxy_step == dnum)
795 else if (!strcmp(name, "cproxysession"))
797 out_names[no_out_args] = name;
798 out_values[no_out_args++] = value;
799 torus_url = m_p->torus_content_url;
801 else if (!strcmp(name, "realm"))
803 else if (name[0] == 'x' && name[1] == '-')
805 out_names[no_out_args] = name;
806 out_values[no_out_args++] = value;
811 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
812 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
813 sprintf(msg, "Bad database argument: %s", name);
820 authentication = std::string(param_user);
822 authentication += "/" + std::string(param_password);
824 if (param_content_user)
826 content_authentication = std::string(param_content_user);
827 if (param_content_password)
828 content_authentication += "/" + std::string(param_content_password);
832 std::map<std::string,SearchablePtr>::iterator it;
833 it = m_p->s_map.find(torus_db);
834 if (it != m_p->s_map.end())
836 else if (torus_url.length() > 0)
838 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
842 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
843 *addinfo = odr_strdup(odr, database.c_str());
847 const xmlNode *ptr = xmlDocGetRootElement(doc);
849 { // presumably ptr is a records element node
850 // parse first record in document
851 for (ptr = ptr->children; ptr; ptr = ptr->next)
853 if (ptr->type == XML_ELEMENT_NODE
854 && !strcmp((const char *) ptr->name, "record"))
858 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
859 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
860 sprintf(*addinfo, "multiple records for udb=%s",
866 sptr = m_p->parse_torus_record(ptr);
875 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
876 *addinfo = odr_strdup(odr, database.c_str());
881 xsltStylesheetPtr xsp = 0;
882 if (sptr->transform_xsl_content.length())
884 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
885 sptr->transform_xsl_content.length());
888 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
889 *addinfo = (char *) odr_malloc(odr, 40);
890 sprintf(*addinfo, "xmlParseMemory failed");
894 xsp = xsltParseStylesheetDoc(xsp_doc);
897 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
898 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
904 else if (sptr->transform_xsl_fname.length())
906 const char *path = 0;
908 if (m_p->xsldir.length())
909 path = m_p->xsldir.c_str();
911 path = m_p->file_path.c_str();
915 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
921 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
923 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
924 sprintf(*addinfo, "File could not be read: %s",
925 sptr->transform_xsl_fname.c_str());
929 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
932 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
933 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
934 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
938 xsp = xsltParseStylesheetDoc(xsp_doc);
941 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
942 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
951 BackendPtr b(new Backend(sptr));
954 b->m_frontend_database = database;
955 b->enable_cproxy = param_nocproxy ? false : true;
957 if (sptr->query_encoding.length())
958 b->set_option("rpnCharset", sptr->query_encoding);
960 b->set_option("timeout", "40");
963 b->set_option("apdulog", "1");
965 if (sptr->piggyback && sptr->sru.length())
966 b->set_option("count", "1"); /* some SRU servers INSIST on getting
967 maximumRecords > 0 */
968 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
970 if (authentication.length() == 0)
971 authentication = sptr->authentication;
973 if (proxy.length() == 0)
974 proxy = sptr->cfProxy;
976 if (sptr->cfAuth.length())
979 b->set_option("user", sptr->cfAuth);
980 if (authentication.length())
982 size_t found = authentication.find('/');
983 if (found != std::string::npos)
985 out_names[no_out_args] = "user";
986 out_values[no_out_args++] =
987 odr_strdup(odr, authentication.substr(0, found).c_str());
989 out_names[no_out_args] = "password";
990 out_values[no_out_args++] =
991 odr_strdup(odr, authentication.substr(found+1).c_str());
995 out_names[no_out_args] = "user";
996 out_values[no_out_args++] =
997 odr_strdup(odr, authentication.c_str());
1002 out_names[no_out_args] = "proxy";
1003 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1005 if (sptr->cfSubDB.length())
1007 out_names[no_out_args] = "subdatabase";
1008 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1012 out_names[no_out_args] = "nocproxy";
1013 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1018 size_t found = authentication.find('/');
1020 if (sptr->sru.length() && found != std::string::npos)
1022 b->set_option("user", authentication.substr(0, found));
1023 b->set_option("password", authentication.substr(found+1));
1026 b->set_option("user", authentication);
1029 b->set_option("proxy", proxy);
1032 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1035 if (sptr->sru.length())
1037 url = "http://" + sptr->target;
1038 b->set_option("sru", sptr->sru);
1040 if (sptr->sru_version.length())
1041 b->set_option("sru_version", sptr->sru_version);
1050 out_names[no_out_args] = 0; // terminate list
1052 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1053 (char **) out_values);
1054 url += "," + std::string(x_args);
1056 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1057 b->connect(url, error, addinfo, odr);
1058 if (*error == 0 && b->enable_cproxy)
1059 create_content_session(package, b, error, addinfo, odr,
1060 content_authentication.length() ?
1061 content_authentication : authentication,
1062 content_proxy.length() ? content_proxy : proxy);
1068 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1069 Odr_oid *preferredRecordSyntax,
1070 const char *element_set_name,
1071 bool &enable_pz2_retrieval,
1072 bool &enable_pz2_transform,
1073 bool &assume_marc8_charset)
1076 char oid_name_str[OID_STR_MAX];
1077 const char *syntax_name = 0;
1079 if (preferredRecordSyntax &&
1080 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1081 && element_set_name)
1083 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1085 enable_pz2_retrieval = true;
1086 enable_pz2_transform = true;
1088 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1090 enable_pz2_retrieval = true;
1094 if (enable_pz2_retrieval)
1096 std::string configured_request_syntax = b->sptr->request_syntax;
1097 if (configured_request_syntax.length())
1099 syntax_name = configured_request_syntax.c_str();
1100 const Odr_oid *syntax_oid =
1101 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1102 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1103 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1104 assume_marc8_charset = true;
1107 else if (preferredRecordSyntax)
1109 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1111 if (b->sptr->sru.length())
1112 syntax_name = "XML";
1114 b->set_option("preferredRecordSyntax", syntax_name);
1116 if (enable_pz2_retrieval)
1118 element_set_name = 0;
1119 if (b->sptr->element_set.length())
1120 element_set_name = b->sptr->element_set.c_str();
1123 b->set_option("elementSetName", element_set_name);
1124 if (b->sptr->sru.length() && element_set_name)
1125 b->set_option("schema", element_set_name);
1128 Z_Records *yf::Zoom::Frontend::get_records(Package &package,
1130 Odr_int number_to_present,
1133 Odr_int *number_of_records_returned,
1136 Odr_oid *preferredRecordSyntax,
1137 const char *element_set_name)
1139 *number_of_records_returned = 0;
1140 Z_Records *records = 0;
1141 bool enable_pz2_retrieval = false; // whether target profile is used
1142 bool enable_pz2_transform = false; // whether XSLT is used as well
1143 bool assume_marc8_charset = false;
1145 prepare_elements(b, preferredRecordSyntax,
1147 enable_pz2_retrieval,
1148 enable_pz2_transform,
1149 assume_marc8_charset);
1151 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1152 enable_pz2_retrieval ? "yes" : "no",
1153 enable_pz2_transform ? "yes" : "no");
1155 if (start < 0 || number_to_present <=0)
1158 if (number_to_present > 10000)
1159 number_to_present = 10000;
1161 ZOOM_record *recs = (ZOOM_record *)
1162 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1164 b->present(start, number_to_present, recs, error, addinfo, odr);
1169 for (i = 0; i < number_to_present; i++)
1174 { // only return records if no error and at least one record
1175 char *odr_database = odr_strdup(odr,
1176 b->m_frontend_database.c_str());
1177 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1178 odr_malloc(odr, sizeof(*npl));
1179 *number_of_records_returned = i;
1180 npl->num_records = i;
1181 npl->records = (Z_NamePlusRecord **)
1182 odr_malloc(odr, i * sizeof(*npl->records));
1183 for (i = 0; i < number_to_present; i++)
1185 Z_NamePlusRecord *npr = 0;
1186 const char *addinfo;
1188 package.log("zoom", YLOG_LOG, "Inspecting record at position %d",
1190 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1191 &addinfo, 0 /* diagset */);
1195 log_diagnostic(package, sur_error, addinfo);
1196 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1199 else if (enable_pz2_retrieval)
1201 char rec_type_str[100];
1202 const char *record_encoding = 0;
1204 if (b->sptr->record_encoding.length())
1205 record_encoding = b->sptr->record_encoding.c_str();
1206 else if (assume_marc8_charset)
1207 record_encoding = "marc8";
1209 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1210 if (record_encoding)
1212 strcat(rec_type_str, "; charset=");
1213 strcat(rec_type_str, record_encoding);
1216 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1219 xmlChar *xmlrec_buf = 0;
1220 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1222 if (!rec_buf && !npr)
1224 std::string addinfo("ZOOM_record_get failed for type ");
1226 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1227 addinfo += rec_type_str;
1228 log_diagnostic(package, error, addinfo.c_str());
1229 npr = zget_surrogateDiagRec(odr, odr_database,
1230 error, addinfo.c_str());
1234 package.log_write(rec_buf, rec_len);
1235 package.log_write("\r\n", 2);
1238 if (rec_buf && b->xsp && enable_pz2_transform)
1240 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1243 const char *addinfo = "xml parse failed for record";
1244 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1245 log_diagnostic(package, error, addinfo);
1246 npr = zget_surrogateDiagRec(
1247 odr, odr_database, error, addinfo);
1252 xsltApplyStylesheet(b->xsp, rec_doc, 0);
1256 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1258 rec_buf = (const char *) xmlrec_buf;
1259 package.log("zoom", YLOG_LOG, "xslt successful");
1260 package.log_write(rec_buf, rec_len);
1262 xmlFreeDoc(rec_res);
1266 std::string addinfo;
1268 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1270 addinfo = "xslt apply failed for "
1271 + b->sptr->transform_xsl_fname;
1272 log_diagnostic(package, error, addinfo.c_str());
1273 npr = zget_surrogateDiagRec(
1274 odr, odr_database, error, addinfo.c_str());
1276 xmlFreeDoc(rec_doc);
1280 if (rec_buf && b->enable_cproxy)
1282 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1284 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1285 if (res.length() && b->content_session_id.length())
1287 size_t off = res.find_first_of("://");
1288 if (off != std::string::npos)
1291 sprintf(tmp, "%s.%s/",
1292 b->content_session_id.c_str(),
1293 m_p->content_proxy_server.c_str());
1294 res.insert(off + 3, tmp);
1299 xmlNode *ptr = xmlDocGetRootElement(doc);
1300 while (ptr && ptr->type != XML_ELEMENT_NODE)
1303 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1304 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1306 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1310 xmlFree(xmlrec_buf);
1312 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1313 rec_buf = (const char *) xmlrec_buf;
1320 npr = zget_surrogateDiagRec(
1322 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1326 npr = (Z_NamePlusRecord *)
1327 odr_malloc(odr, sizeof(*npr));
1328 npr->databaseName = odr_database;
1329 npr->which = Z_NamePlusRecord_databaseRecord;
1330 npr->u.databaseRecord =
1331 z_ext_record_xml(odr, rec_buf, rec_len);
1335 xmlFree(xmlrec_buf);
1340 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1343 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1344 npr->databaseName = odr_database;
1345 npr->which = Z_NamePlusRecord_databaseRecord;
1346 npr->u.databaseRecord = ext;
1350 npr = zget_surrogateDiagRec(
1352 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1353 "ZOOM_record, type ext");
1356 npl->records[i] = npr;
1358 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1359 records->which = Z_Records_DBOSD;
1360 records->u.databaseOrSurDiagnostics = npl;
1365 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1368 struct cql_node *r = 0;
1376 std::map<std::string,std::string>::const_iterator it;
1377 it = fieldmap.find(cn->u.st.index);
1378 if (it == fieldmap.end())
1380 if (it->second.length())
1381 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1387 r = convert_cql_fields(cn->u.boolean.left, odr);
1389 r = convert_cql_fields(cn->u.boolean.right, odr);
1392 r = convert_cql_fields(cn->u.sort.search, odr);
1398 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1399 int error, const char *addinfo)
1401 const char *err_msg = yaz_diag_bib1_str(error);
1403 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1404 error, err_msg, addinfo);
1406 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1410 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1412 Z_GDU *gdu = package.request().get();
1413 Z_APDU *apdu_req = gdu->u.z3950;
1414 Z_APDU *apdu_res = 0;
1416 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1417 if (sr->num_databaseNames != 1)
1419 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
1420 log_diagnostic(package, error, 0);
1421 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
1422 package.response() = apdu_res;
1432 std::string db(sr->databaseNames[0]);
1434 BackendPtr b = get_backend_from_databases(package, db, &error,
1435 &addinfo, odr, &proxy_step);
1436 if (error && proxy_step)
1438 package.log("zoom", YLOG_WARN,
1439 "create backend failed: trying next proxy");
1444 log_diagnostic(package, error, addinfo);
1445 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1446 package.response() = apdu_res;
1450 b->set_option("setname", "default");
1452 bool enable_pz2_retrieval = false;
1453 bool enable_pz2_transform = false;
1454 bool assume_marc8_charset = false;
1455 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1456 enable_pz2_retrieval,
1457 enable_pz2_transform,
1458 assume_marc8_charset);
1461 Z_Query *query = sr->query;
1462 WRBUF ccl_wrbuf = 0;
1463 WRBUF pqf_wrbuf = 0;
1464 std::string sortkeys;
1466 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1469 pqf_wrbuf = wrbuf_alloc();
1470 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1472 else if (query->which == Z_Query_type_2)
1475 ccl_wrbuf = wrbuf_alloc();
1476 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1477 query->u.type_2->len);
1479 else if (query->which == Z_Query_type_104 &&
1480 query->u.type_104->which == Z_External_CQL)
1483 const char *cql = query->u.type_104->u.cql;
1484 CQL_parser cp = cql_parser_create();
1485 int r = cql_parser_string(cp, cql);
1486 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1489 cql_parser_destroy(cp);
1490 error = YAZ_BIB1_MALFORMED_QUERY;
1491 const char *addinfo = "CQL syntax error";
1492 log_diagnostic(package, error, addinfo);
1494 odr.create_searchResponse(apdu_req, error, addinfo);
1495 package.response() = apdu_res;
1498 struct cql_node *cn = cql_parser_result(cp);
1499 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1502 // hopefully we are getting a ptr to a index+relation+term node
1503 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1505 if (cn_error->which == CQL_NODE_ST)
1506 addinfo = cn_error->u.st.index;
1508 log_diagnostic(package, error, addinfo);
1509 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1510 package.response() = apdu_res;
1511 cql_parser_destroy(cp);
1515 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1518 error = YAZ_BIB1_MALFORMED_QUERY;
1519 const char *addinfo = "CQL to CCL conversion error";
1521 log_diagnostic(package, error, addinfo);
1522 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1523 package.response() = apdu_res;
1524 cql_parser_destroy(cp);
1528 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1529 if (cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf))
1531 error = YAZ_BIB1_ILLEGAL_SORT_RELATION;
1532 const char *addinfo = "CQL to CCL sortby conversion";
1534 log_diagnostic(package, error, addinfo);
1535 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1536 package.response() = apdu_res;
1537 wrbuf_destroy(sru_sortkeys_wrbuf);
1538 cql_parser_destroy(cp);
1541 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1542 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1544 wrbuf_destroy(sru_sortkeys_wrbuf);
1546 ccl_wrbuf = wrbuf_alloc();
1547 wrbuf_puts(ccl_wrbuf, ccl_buf);
1549 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1550 yaz_tok_parse_t tp =
1551 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1552 yaz_tok_cfg_destroy(tc);
1554 /* go through sortspec and map fields */
1555 int token = yaz_tok_move(tp);
1556 while (token != YAZ_TOK_EOF)
1558 if (token == YAZ_TOK_STRING)
1560 const char *field = yaz_tok_parse_string(tp);
1561 std::map<std::string,std::string>::iterator it;
1562 it = b->sptr->sortmap.find(field);
1563 if (it != b->sptr->sortmap.end())
1564 sortkeys += it->second;
1569 token = yaz_tok_move(tp);
1570 if (token == YAZ_TOK_STRING)
1572 sortkeys += yaz_tok_parse_string(tp);
1574 if (token != YAZ_TOK_EOF)
1577 token = yaz_tok_move(tp);
1580 yaz_tok_parse_destroy(tp);
1581 wrbuf_destroy(sort_spec_wrbuf);
1583 cql_parser_destroy(cp);
1587 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1588 const char *addinfo = 0;
1589 log_diagnostic(package, error, addinfo);
1590 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1591 package.response() = apdu_res;
1598 assert(pqf_wrbuf == 0);
1600 struct ccl_rpn_node *cn;
1601 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1602 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1604 wrbuf_destroy(ccl_wrbuf);
1607 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1608 error = YAZ_BIB1_MALFORMED_QUERY;
1612 case CCL_ERR_UNKNOWN_QUAL:
1613 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1615 case CCL_ERR_TRUNC_NOT_LEFT:
1616 case CCL_ERR_TRUNC_NOT_RIGHT:
1617 case CCL_ERR_TRUNC_NOT_BOTH:
1618 error = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1621 log_diagnostic(package, error, addinfo);
1622 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1623 package.response() = apdu_res;
1626 pqf_wrbuf = wrbuf_alloc();
1627 ccl_pquery(pqf_wrbuf, cn);
1628 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1634 ZOOM_query q = ZOOM_query_create();
1635 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1637 if (b->get_option("sru"))
1641 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1642 WRBUF wrb = wrbuf_alloc();
1644 if (!strcmp(b->get_option("sru"), "solr"))
1646 solr_transform_t cqlt = solr_transform_create();
1648 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1650 solr_transform_close(cqlt);
1654 cql_transform_t cqlt = cql_transform_create();
1656 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1658 cql_transform_close(cqlt);
1662 ZOOM_query_cql(q, wrbuf_cstr(wrb));
1663 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
1664 b->search(q, &hits, &error, &addinfo, odr);
1666 ZOOM_query_destroy(q);
1669 wrbuf_destroy(pqf_wrbuf);
1672 error = YAZ_BIB1_MALFORMED_QUERY;
1673 const char *addinfo = "can not convert from RPN to CQL/SOLR";
1674 log_diagnostic(package, error, addinfo);
1675 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1676 package.response() = apdu_res;
1682 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
1683 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1684 b->search(q, &hits, &error, &addinfo, odr);
1685 ZOOM_query_destroy(q);
1686 wrbuf_destroy(pqf_wrbuf);
1689 if (error && proxy_step)
1691 // reset below prevent reuse in get_backend_from_databases
1693 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
1697 const char *element_set_name = 0;
1698 Odr_int number_to_present = 0;
1700 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1702 Odr_int number_of_records_returned = 0;
1703 Z_Records *records = get_records(
1705 0, number_to_present, &error, &addinfo,
1706 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1709 log_diagnostic(package, error, addinfo);
1710 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1713 apdu_res->u.searchResponse->records = records;
1714 apdu_res->u.searchResponse->numberOfRecordsReturned =
1715 odr_intdup(odr, number_of_records_returned);
1717 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1718 package.response() = apdu_res;
1721 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1723 Z_GDU *gdu = package.request().get();
1724 Z_APDU *apdu_req = gdu->u.z3950;
1725 Z_APDU *apdu_res = 0;
1726 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1731 package.response() = odr.create_presentResponse(
1732 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1735 const char *element_set_name = 0;
1736 Z_RecordComposition *comp = pr->recordComposition;
1737 if (comp && comp->which != Z_RecordComp_simple)
1739 package.response() = odr.create_presentResponse(
1741 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1744 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1745 element_set_name = comp->u.simple->u.generic;
1746 Odr_int number_of_records_returned = 0;
1749 Z_Records *records = get_records(package,
1750 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1751 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1752 pr->preferredRecordSyntax, element_set_name);
1754 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1757 apdu_res->u.presentResponse->records = records;
1758 apdu_res->u.presentResponse->numberOfRecordsReturned =
1759 odr_intdup(odr, number_of_records_returned);
1761 package.response() = apdu_res;
1764 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1766 Z_GDU *gdu = package.request().get();
1769 else if (gdu->which == Z_GDU_Z3950)
1771 Z_APDU *apdu_req = gdu->u.z3950;
1774 wrbuf_rewind(m_backend->m_apdu_wrbuf);
1775 if (apdu_req->which == Z_APDU_initRequest)
1778 package.response() = odr.create_close(
1780 Z_Close_protocolError,
1783 else if (apdu_req->which == Z_APDU_searchRequest)
1785 handle_search(package);
1787 else if (apdu_req->which == Z_APDU_presentRequest)
1789 handle_present(package);
1794 package.response() = odr.create_close(
1796 Z_Close_protocolError,
1797 "zoom filter cannot handle this APDU");
1798 package.session().close();
1802 WRBUF w = m_backend->m_apdu_wrbuf;
1803 package.log_write(wrbuf_buf(w), wrbuf_len(w));
1808 package.session().close();
1812 void yf::Zoom::Impl::process(mp::Package &package)
1814 FrontendPtr f = get_frontend(package);
1815 Z_GDU *gdu = package.request().get();
1817 if (f->m_is_virtual)
1819 f->handle_package(package);
1821 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1824 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1825 f->m_init_gdu = gdu;
1828 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1829 Z_InitResponse *resp = apdu->u.initResponse;
1832 static const int masks[] = {
1837 for (i = 0; masks[i] != -1; i++)
1838 if (ODR_MASK_GET(req->options, masks[i]))
1839 ODR_MASK_SET(resp->options, masks[i]);
1841 static const int versions[] = {
1842 Z_ProtocolVersion_1,
1843 Z_ProtocolVersion_2,
1844 Z_ProtocolVersion_3,
1847 for (i = 0; versions[i] != -1; i++)
1848 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1849 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1853 *resp->preferredMessageSize = *req->preferredMessageSize;
1854 *resp->maximumRecordSize = *req->maximumRecordSize;
1856 package.response() = apdu;
1857 f->m_is_virtual = true;
1862 release_frontend(package);
1866 static mp::filter::Base* filter_creator()
1868 return new mp::filter::Zoom;
1872 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1883 * c-file-style: "Stroustrup"
1884 * indent-tabs-mode: nil
1886 * vim: shiftwidth=4 tabstop=8 expandtab