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;
96 Backend(SearchablePtr sptr);
98 void connect(std::string zurl, int *error, char **addinfo,
100 void search(ZOOM_query q, Odr_int *hits,
101 int *error, char **addinfo, ODR odr);
102 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
103 int *error, char **addinfo, ODR odr);
104 void set_option(const char *name, const char *value);
105 void set_option(const char *name, std::string value);
106 const char *get_option(const char *name);
107 void get_zoom_error(int *error, char **addinfo, ODR odr);
109 class Zoom::Frontend : boost::noncopyable {
114 yazpp_1::GDU m_init_gdu;
115 BackendPtr m_backend;
116 void handle_package(mp::Package &package);
117 void handle_search(mp::Package &package);
118 void handle_present(mp::Package &package);
119 BackendPtr get_backend_from_databases(mp::Package &package,
120 std::string &database,
125 bool create_content_session(mp::Package &package,
130 std::string authentication,
133 void prepare_elements(BackendPtr b,
134 Odr_oid *preferredRecordSyntax,
135 const char *element_set_name,
136 bool &enable_pz2_retrieval,
137 bool &enable_pz2_transform,
138 bool &assume_marc8_charset);
140 Z_Records *get_records(Odr_int start,
141 Odr_int number_to_present,
144 Odr_int *number_of_records_returned,
145 ODR odr, BackendPtr b,
146 Odr_oid *preferredRecordSyntax,
147 const char *element_set_name);
149 Frontend(Impl *impl);
153 friend class Frontend;
157 void process(metaproxy_1::Package & package);
158 void configure(const xmlNode * ptr, bool test_only,
161 void configure_local_records(const xmlNode * ptr, bool test_only);
162 FrontendPtr get_frontend(mp::Package &package);
163 void release_frontend(mp::Package &package);
164 SearchablePtr parse_torus_record(const xmlNode *ptr);
165 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
166 std::map<mp::Session, FrontendPtr> m_clients;
167 boost::mutex m_mutex;
168 boost::condition m_cond_session_ready;
169 std::string torus_url;
170 std::string default_realm;
171 std::map<std::string,std::string> fieldmap;
173 std::string file_path;
174 std::string content_proxy_server;
175 std::string content_tmp_file;
178 std::string element_transform;
179 std::string element_raw;
181 std::map<std::string,SearchablePtr> s_map;
186 // define Pimpl wrapper forwarding to Impl
188 yf::Zoom::Zoom() : m_p(new Impl)
193 { // must have a destructor because of boost::scoped_ptr
196 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only,
199 m_p->configure(xmlnode, test_only, path);
202 void yf::Zoom::process(mp::Package &package) const
204 m_p->process(package);
208 // define Implementation stuff
210 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
212 m_apdu_wrbuf = wrbuf_alloc();
213 m_connection = ZOOM_connection_create(0);
214 ZOOM_connection_save_apdu_wrbuf(m_connection, m_apdu_wrbuf);
219 yf::Zoom::Backend::~Backend()
222 xsltFreeStylesheet(xsp);
223 ZOOM_connection_destroy(m_connection);
224 ZOOM_resultset_destroy(m_resultset);
228 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
232 const char *zoom_addinfo = 0;
233 const char *dset = 0;
234 *error = ZOOM_connection_error_x(m_connection, &msg, &zoom_addinfo, &dset);
237 if (*error >= ZOOM_ERROR_CONNECT)
239 // turn ZOOM diagnostic into a Bib-1 2: with addinfo=zoom err msg
240 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
241 *addinfo = (char *) odr_malloc(
242 odr, 20 + strlen(msg) +
243 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
244 strcpy(*addinfo, msg);
247 strcat(*addinfo, ": ");
248 strcat(*addinfo, zoom_addinfo);
253 if (dset && !strcmp(dset, "info:srw/diagnostic/1"))
254 *error = yaz_diag_srw_to_bib1(*error);
255 *addinfo = (char *) odr_malloc(
256 odr, 20 + (zoom_addinfo ? strlen(zoom_addinfo) : 0));
258 if (zoom_addinfo && *zoom_addinfo)
260 strcpy(*addinfo, zoom_addinfo);
261 strcat(*addinfo, " ");
263 strcat(*addinfo, "(backend)");
268 void yf::Zoom::Backend::connect(std::string zurl,
269 int *error, char **addinfo,
272 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
273 get_zoom_error(error, addinfo, odr);
276 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
277 int *error, char **addinfo, ODR odr)
279 m_resultset = ZOOM_connection_search(m_connection, q);
280 get_zoom_error(error, addinfo, odr);
282 *hits = ZOOM_resultset_size(m_resultset);
287 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
289 int *error, char **addinfo, ODR odr)
291 ZOOM_resultset_records(m_resultset, recs, start, number);
292 get_zoom_error(error, addinfo, odr);
295 void yf::Zoom::Backend::set_option(const char *name, const char *value)
297 ZOOM_connection_option_set(m_connection, name, value);
299 ZOOM_resultset_option_set(m_resultset, name, value);
302 void yf::Zoom::Backend::set_option(const char *name, std::string value)
304 set_option(name, value.c_str());
307 const char *yf::Zoom::Backend::get_option(const char *name)
309 return ZOOM_connection_option_get(m_connection, name);
312 yf::Zoom::Searchable::Searchable(CCL_bibset base)
315 use_turbomarc = true;
316 sortStrategy = "embed";
317 urlRecipe = "${md-electronic-url}";
318 ccl_bibset = ccl_qual_dup(base);
321 yf::Zoom::Searchable::~Searchable()
323 ccl_qual_rm(&ccl_bibset);
326 yf::Zoom::Frontend::Frontend(Impl *impl) :
327 m_p(impl), m_is_virtual(false), m_in_use(true)
331 yf::Zoom::Frontend::~Frontend()
335 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
337 boost::mutex::scoped_lock lock(m_mutex);
339 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
343 it = m_clients.find(package.session());
344 if (it == m_clients.end())
347 if (!it->second->m_in_use)
349 it->second->m_in_use = true;
352 m_cond_session_ready.wait(lock);
354 FrontendPtr f(new Frontend(this));
355 m_clients[package.session()] = f;
360 void yf::Zoom::Impl::release_frontend(mp::Package &package)
362 boost::mutex::scoped_lock lock(m_mutex);
363 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
365 it = m_clients.find(package.session());
366 if (it != m_clients.end())
368 if (package.session().is_closed())
374 it->second->m_in_use = false;
376 m_cond_session_ready.notify_all();
380 yf::Zoom::Impl::Impl() :
381 apdu_log(false), element_transform("pz2") , element_raw("raw")
383 bibset = ccl_qual_mk();
385 srand((unsigned int) time(0));
388 yf::Zoom::Impl::~Impl()
390 ccl_qual_rm(&bibset);
393 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
395 Zoom::SearchablePtr s(new Searchable(bibset));
397 for (ptr = ptr->children; ptr; ptr = ptr->next)
399 if (ptr->type != XML_ELEMENT_NODE)
401 if (!strcmp((const char *) ptr->name, "layer"))
403 else if (!strcmp((const char *) ptr->name,
406 s->authentication = mp::xml::get_text(ptr);
408 else if (!strcmp((const char *) ptr->name,
411 s->cfAuth = mp::xml::get_text(ptr);
413 else if (!strcmp((const char *) ptr->name,
416 s->cfProxy = mp::xml::get_text(ptr);
418 else if (!strcmp((const char *) ptr->name,
421 s->cfSubDB = mp::xml::get_text(ptr);
423 else if (!strcmp((const char *) ptr->name,
426 s->contentConnector = mp::xml::get_text(ptr);
428 else if (!strcmp((const char *) ptr->name, "udb"))
430 s->udb = mp::xml::get_text(ptr);
432 else if (!strcmp((const char *) ptr->name, "zurl"))
434 s->target = mp::xml::get_text(ptr);
436 else if (!strcmp((const char *) ptr->name, "sru"))
438 s->sru = mp::xml::get_text(ptr);
440 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
441 !strcmp((const char *) ptr->name, "sruVersion"))
443 s->sru_version = mp::xml::get_text(ptr);
445 else if (!strcmp((const char *) ptr->name,
448 s->query_encoding = mp::xml::get_text(ptr);
450 else if (!strcmp((const char *) ptr->name,
453 s->piggyback = mp::xml::get_bool(ptr, true);
455 else if (!strcmp((const char *) ptr->name,
458 s->request_syntax = mp::xml::get_text(ptr);
460 else if (!strcmp((const char *) ptr->name,
463 s->element_set = mp::xml::get_text(ptr);
465 else if (!strcmp((const char *) ptr->name,
468 s->record_encoding = mp::xml::get_text(ptr);
470 else if (!strcmp((const char *) ptr->name,
473 s->transform_xsl_fname = mp::xml::get_text(ptr);
475 else if (!strcmp((const char *) ptr->name,
478 s->transform_xsl_content = mp::xml::get_text(ptr);
480 else if (!strcmp((const char *) ptr->name,
483 s->urlRecipe = mp::xml::get_text(ptr);
485 else if (!strcmp((const char *) ptr->name,
488 ; // useTurboMarc is ignored
490 else if (!strncmp((const char *) ptr->name,
493 std::string value = mp::xml::get_text(ptr);
494 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
495 (const char *) ptr->name + 7);
497 else if (!strncmp((const char *) ptr->name,
500 std::string value = mp::xml::get_text(ptr);
501 s->sortmap[(const char *) ptr->name + 8] = value;
503 else if (!strcmp((const char *) ptr->name,
506 s->sortStrategy = mp::xml::get_text(ptr);
512 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
514 while (ptr && ptr->type != XML_ELEMENT_NODE)
519 if (!strcmp((const char *) ptr->name, "records"))
521 for (ptr = ptr->children; ptr; ptr = ptr->next)
523 if (ptr->type != XML_ELEMENT_NODE)
525 if (!strcmp((const char *) ptr->name, "record"))
527 SearchablePtr s = parse_torus_record(ptr);
530 std::string udb = s->udb;
535 throw mp::filter::FilterException
536 ("No udb for local torus record");
542 throw mp::filter::FilterException
544 + std::string((const char *) ptr->name)
545 + " in zoom filter inside element "
552 throw mp::filter::FilterException
554 + std::string((const char *) ptr->name)
555 + " in zoom filter inside element <torus>");
560 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
563 content_tmp_file = "/tmp/cf.XXXXXX.p";
568 for (ptr = ptr->children; ptr; ptr = ptr->next)
570 if (ptr->type != XML_ELEMENT_NODE)
572 else if (!strcmp((const char *) ptr->name, "torus"))
574 const struct _xmlAttr *attr;
575 for (attr = ptr->properties; attr; attr = attr->next)
577 if (!strcmp((const char *) attr->name, "url"))
578 torus_url = mp::xml::get_text(attr->children);
579 else if (!strcmp((const char *) attr->name, "realm"))
580 default_realm = mp::xml::get_text(attr->children);
581 else if (!strcmp((const char *) attr->name, "xsldir"))
582 xsldir = mp::xml::get_text(attr->children);
583 else if (!strcmp((const char *) attr->name, "element_transform"))
584 element_transform = mp::xml::get_text(attr->children);
585 else if (!strcmp((const char *) attr->name, "element_raw"))
586 element_raw = mp::xml::get_text(attr->children);
587 else if (!strcmp((const char *) attr->name, "proxy"))
588 proxy = mp::xml::get_text(attr->children);
590 throw mp::filter::FilterException(
591 "Bad attribute " + std::string((const char *)
594 configure_local_records(ptr->children, test_only);
596 else if (!strcmp((const char *) ptr->name, "cclmap"))
598 const char *addinfo = 0;
599 ccl_xml_config(bibset, ptr, &addinfo);
601 else if (!strcmp((const char *) ptr->name, "fieldmap"))
603 const struct _xmlAttr *attr;
604 std::string ccl_field;
605 std::string cql_field;
606 for (attr = ptr->properties; attr; attr = attr->next)
608 if (!strcmp((const char *) attr->name, "ccl"))
609 ccl_field = mp::xml::get_text(attr->children);
610 else if (!strcmp((const char *) attr->name, "cql"))
611 cql_field = mp::xml::get_text(attr->children);
613 throw mp::filter::FilterException(
614 "Bad attribute " + std::string((const char *)
617 if (cql_field.length())
618 fieldmap[cql_field] = ccl_field;
620 else if (!strcmp((const char *) ptr->name, "contentProxy"))
622 const struct _xmlAttr *attr;
623 for (attr = ptr->properties; attr; attr = attr->next)
625 if (!strcmp((const char *) attr->name, "server"))
626 content_proxy_server = mp::xml::get_text(attr->children);
627 else if (!strcmp((const char *) attr->name, "tmp_file"))
628 content_tmp_file = mp::xml::get_text(attr->children);
630 throw mp::filter::FilterException(
631 "Bad attribute " + std::string((const char *)
635 else if (!strcmp((const char *) ptr->name, "log"))
637 const struct _xmlAttr *attr;
638 for (attr = ptr->properties; attr; attr = attr->next)
640 if (!strcmp((const char *) attr->name, "apdu"))
641 apdu_log = mp::xml::get_bool(attr->children, false);
643 throw mp::filter::FilterException(
644 "Bad attribute " + std::string((const char *)
650 throw mp::filter::FilterException
652 + std::string((const char *) ptr->name)
653 + " in zoom filter");
658 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
660 int *error, char **addinfo,
662 std::string authentication,
665 if (b->sptr->contentConnector.length())
667 char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
668 strcpy(fname, m_p->content_tmp_file.c_str());
669 char *xx = strstr(fname, "XXXXXX");
672 xx = fname + strlen(fname);
673 strcat(fname, "XXXXXX");
675 char tmp_char = xx[6];
676 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
679 FILE *file = fopen(fname, "w");
682 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
683 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
684 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
685 sprintf(*addinfo, "Could not create %s", fname);
689 b->content_session_id.assign(xx, 6);
690 WRBUF w = wrbuf_alloc();
691 wrbuf_puts(w, "#content_proxy\n");
692 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
693 if (authentication.length())
694 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
696 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
698 fwrite(wrbuf_buf(w), 1, wrbuf_len(w), file);
700 package.log("zoom", YLOG_LOG, "content file: %s", fname);
706 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
707 mp::Package &package,
708 std::string &database, int *error, char **addinfo, ODR odr)
710 std::list<BackendPtr>::const_iterator map_it;
711 if (m_backend && m_backend->m_frontend_database == database)
714 std::string input_args;
715 std::string torus_db;
716 size_t db_arg_pos = database.find(',');
717 if (db_arg_pos != std::string::npos)
719 torus_db = database.substr(0, db_arg_pos);
720 input_args = database.substr(db_arg_pos + 1);
725 std::string authentication;
727 std::string realm = m_p->default_realm;
729 const char *param_user = 0;
730 const char *param_password = 0;
736 if (input_args.length())
737 no_parms = yaz_uri_to_array(input_args.c_str(),
738 odr, &names, &values);
739 // adding 10 because we'll be adding other URL args
740 const char **out_names = (const char **)
741 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
742 const char **out_values = (const char **)
743 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
746 for (i = 0; i < no_parms; i++)
748 const char *name = names[i];
749 const char *value = values[i];
752 if (!strcmp(name, "user"))
754 else if (!strcmp(name, "password"))
755 param_password = value;
756 else if (!strcmp(name, "proxy"))
758 else if (!strcmp(name, "cproxysession"))
760 out_names[no_out_args] = name;
761 out_values[no_out_args++] = value;
763 else if (!strcmp(name, "realm"))
765 else if (name[0] == 'x' && name[1] == '-')
767 out_names[no_out_args] = name;
768 out_values[no_out_args++] = value;
773 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
774 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
775 sprintf(msg, "Bad database argument: %s", name);
782 authentication = std::string(param_user);
784 authentication += "/" + std::string(param_password);
788 std::map<std::string,SearchablePtr>::iterator it;
789 it = m_p->s_map.find(torus_db);
790 if (it != m_p->s_map.end())
792 else if (m_p->torus_url.length() > 0)
794 xmlDoc *doc = mp::get_searchable(m_p->torus_url, torus_db, realm,
798 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
799 *addinfo = odr_strdup(odr, database.c_str());
803 const xmlNode *ptr = xmlDocGetRootElement(doc);
805 { // presumably ptr is a records element node
806 // parse first record in document
807 for (ptr = ptr->children; ptr; ptr = ptr->next)
809 if (ptr->type == XML_ELEMENT_NODE
810 && !strcmp((const char *) ptr->name, "record"))
814 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
815 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
816 sprintf(*addinfo, "multiple records for udb=%s",
822 sptr = m_p->parse_torus_record(ptr);
831 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
832 *addinfo = odr_strdup(odr, database.c_str());
837 xsltStylesheetPtr xsp = 0;
838 if (sptr->transform_xsl_content.length())
840 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
841 sptr->transform_xsl_content.length());
844 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
845 *addinfo = (char *) odr_malloc(odr, 40);
846 sprintf(*addinfo, "xmlParseMemory failed");
850 xsp = xsltParseStylesheetDoc(xsp_doc);
853 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
854 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
860 else if (sptr->transform_xsl_fname.length())
862 const char *path = 0;
864 if (m_p->xsldir.length())
865 path = m_p->xsldir.c_str();
867 path = m_p->file_path.c_str();
871 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
877 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
879 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
880 sprintf(*addinfo, "File could not be read: %s",
881 sptr->transform_xsl_fname.c_str());
885 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
888 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
889 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
890 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
894 xsp = xsltParseStylesheetDoc(xsp_doc);
897 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
898 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
907 BackendPtr b(new Backend(sptr));
910 b->m_frontend_database = database;
912 if (sptr->query_encoding.length())
913 b->set_option("rpnCharset", sptr->query_encoding);
915 b->set_option("timeout", "40");
918 b->set_option("apdulog", "1");
921 b->set_option("count", "1"); /* some SRU servers INSIST on getting
922 maximumRecords > 0 */
923 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
925 if (authentication.length() == 0)
926 authentication = sptr->authentication;
928 if (proxy.length() == 0)
929 proxy = sptr->cfProxy;
931 if (sptr->cfAuth.length())
934 b->set_option("user", sptr->cfAuth);
935 if (authentication.length())
937 size_t found = authentication.find('/');
938 if (found != std::string::npos)
940 out_names[no_out_args] = "user";
941 out_values[no_out_args++] =
942 odr_strdup(odr, authentication.substr(0, found).c_str());
944 out_names[no_out_args] = "password";
945 out_values[no_out_args++] =
946 odr_strdup(odr, authentication.substr(found+1).c_str());
950 out_names[no_out_args] = "user";
951 out_values[no_out_args++] =
952 odr_strdup(odr, authentication.c_str());
957 out_names[no_out_args] = "proxy";
958 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
960 if (sptr->cfSubDB.length())
962 out_names[no_out_args] = "subdatabase";
963 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
968 size_t found = authentication.find('/');
970 if (sptr->sru.length() && found != std::string::npos)
972 b->set_option("user", authentication.substr(0, found));
973 b->set_option("password", authentication.substr(found+1));
976 b->set_option("user", authentication);
979 b->set_option("proxy", proxy);
982 if (sptr->sru.length())
984 url = "http://" + sptr->target;
985 b->set_option("sru", sptr->sru);
987 if (sptr->sru_version.length())
988 b->set_option("sru_version", sptr->sru_version);
997 out_names[no_out_args] = 0; // terminate list
999 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1000 (char **) out_values);
1001 url += "," + std::string(x_args);
1003 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1004 b->connect(url, error, addinfo, odr);
1006 create_content_session(package, b, error, addinfo, odr,
1007 authentication, proxy);
1013 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1014 Odr_oid *preferredRecordSyntax,
1015 const char *element_set_name,
1016 bool &enable_pz2_retrieval,
1017 bool &enable_pz2_transform,
1018 bool &assume_marc8_charset)
1021 char oid_name_str[OID_STR_MAX];
1022 const char *syntax_name = 0;
1024 if (preferredRecordSyntax &&
1025 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
1026 && element_set_name)
1028 if (!strcmp(element_set_name, m_p->element_transform.c_str()))
1030 enable_pz2_retrieval = true;
1031 enable_pz2_transform = true;
1033 else if (!strcmp(element_set_name, m_p->element_raw.c_str()))
1035 enable_pz2_retrieval = true;
1039 if (enable_pz2_retrieval)
1041 std::string configured_request_syntax = b->sptr->request_syntax;
1042 if (configured_request_syntax.length())
1044 syntax_name = configured_request_syntax.c_str();
1045 const Odr_oid *syntax_oid =
1046 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1047 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1048 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1049 assume_marc8_charset = true;
1052 else if (preferredRecordSyntax)
1054 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1056 if (b->sptr->sru.length())
1057 syntax_name = "XML";
1059 b->set_option("preferredRecordSyntax", syntax_name);
1061 if (enable_pz2_retrieval)
1063 element_set_name = 0;
1064 if (b->sptr->element_set.length())
1065 element_set_name = b->sptr->element_set.c_str();
1068 b->set_option("elementSetName", element_set_name);
1069 if (b->sptr->sru.length() && element_set_name)
1070 b->set_option("schema", element_set_name);
1073 Z_Records *yf::Zoom::Frontend::get_records(Odr_int start,
1074 Odr_int number_to_present,
1077 Odr_int *number_of_records_returned,
1080 Odr_oid *preferredRecordSyntax,
1081 const char *element_set_name)
1083 *number_of_records_returned = 0;
1084 Z_Records *records = 0;
1085 bool enable_pz2_retrieval = false; // whether target profile is used
1086 bool enable_pz2_transform = false; // whether XSLT is used as well
1087 bool assume_marc8_charset = false;
1089 prepare_elements(b, preferredRecordSyntax,
1091 enable_pz2_retrieval,
1092 enable_pz2_transform,
1093 assume_marc8_charset);
1095 if (start < 0 || number_to_present <=0)
1098 if (number_to_present > 10000)
1099 number_to_present = 10000;
1101 ZOOM_record *recs = (ZOOM_record *)
1102 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1104 b->present(start, number_to_present, recs, error, addinfo, odr);
1109 for (i = 0; i < number_to_present; i++)
1114 { // only return records if no error and at least one record
1115 char *odr_database = odr_strdup(odr,
1116 b->m_frontend_database.c_str());
1117 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1118 odr_malloc(odr, sizeof(*npl));
1119 *number_of_records_returned = i;
1120 npl->num_records = i;
1121 npl->records = (Z_NamePlusRecord **)
1122 odr_malloc(odr, i * sizeof(*npl->records));
1123 for (i = 0; i < number_to_present; i++)
1125 Z_NamePlusRecord *npr = 0;
1126 const char *addinfo;
1127 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1128 &addinfo, 0 /* diagset */);
1132 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1135 else if (enable_pz2_retrieval)
1137 char rec_type_str[100];
1138 const char *record_encoding = 0;
1140 if (b->sptr->record_encoding.length())
1141 record_encoding = b->sptr->record_encoding.c_str();
1142 else if (assume_marc8_charset)
1143 record_encoding = "marc8";
1145 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1146 if (record_encoding)
1148 strcat(rec_type_str, "; charset=");
1149 strcat(rec_type_str, record_encoding);
1153 xmlChar *xmlrec_buf = 0;
1154 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1156 if (!rec_buf && !npr)
1158 std::string addinfo("ZOOM_record_get failed for type ");
1160 addinfo += rec_type_str;
1161 npr = zget_surrogateDiagRec(
1163 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1167 if (rec_buf && b->xsp && enable_pz2_transform)
1169 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1172 npr = zget_surrogateDiagRec(
1174 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1175 "xml parse failed for record");
1180 xsltApplyStylesheet(b->xsp, rec_doc, 0);
1184 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1186 rec_buf = (const char *) xmlrec_buf;
1188 xmlFreeDoc(rec_res);
1192 std::string addinfo;
1194 addinfo = "xslt apply failed for "
1195 + b->sptr->transform_xsl_fname;
1196 npr = zget_surrogateDiagRec(
1198 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1201 xmlFreeDoc(rec_doc);
1207 xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
1209 mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
1210 if (res.length() && b->content_session_id.length())
1212 size_t off = res.find_first_of("://");
1213 if (off != std::string::npos)
1216 sprintf(tmp, "%s.%s/",
1217 b->content_session_id.c_str(),
1218 m_p->content_proxy_server.c_str());
1219 res.insert(off + 3, tmp);
1224 xmlNode *ptr = xmlDocGetRootElement(doc);
1225 while (ptr && ptr->type != XML_ELEMENT_NODE)
1228 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1229 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1231 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1235 xmlFree(xmlrec_buf);
1237 xmlDocDumpMemory(doc, &xmlrec_buf, &rec_len);
1238 rec_buf = (const char *) xmlrec_buf;
1245 npr = zget_surrogateDiagRec(
1247 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1251 npr = (Z_NamePlusRecord *)
1252 odr_malloc(odr, sizeof(*npr));
1253 npr->databaseName = odr_database;
1254 npr->which = Z_NamePlusRecord_databaseRecord;
1255 npr->u.databaseRecord =
1256 z_ext_record_xml(odr, rec_buf, rec_len);
1260 xmlFree(xmlrec_buf);
1265 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1268 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1269 npr->databaseName = odr_database;
1270 npr->which = Z_NamePlusRecord_databaseRecord;
1271 npr->u.databaseRecord = ext;
1275 npr = zget_surrogateDiagRec(
1277 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1278 "ZOOM_record, type ext");
1281 npl->records[i] = npr;
1283 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1284 records->which = Z_Records_DBOSD;
1285 records->u.databaseOrSurDiagnostics = npl;
1290 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1293 struct cql_node *r = 0;
1301 std::map<std::string,std::string>::const_iterator it;
1302 it = fieldmap.find(cn->u.st.index);
1303 if (it == fieldmap.end())
1305 if (it->second.length())
1306 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1312 r = convert_cql_fields(cn->u.boolean.left, odr);
1314 r = convert_cql_fields(cn->u.boolean.right, odr);
1317 r = convert_cql_fields(cn->u.sort.search, odr);
1323 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1325 Z_GDU *gdu = package.request().get();
1326 Z_APDU *apdu_req = gdu->u.z3950;
1327 Z_APDU *apdu_res = 0;
1329 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1330 if (sr->num_databaseNames != 1)
1332 apdu_res = odr.create_searchResponse(
1333 apdu_req, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
1334 package.response() = apdu_res;
1340 std::string db(sr->databaseNames[0]);
1341 BackendPtr b = get_backend_from_databases(package, db, &error,
1346 odr.create_searchResponse(apdu_req, error, addinfo);
1347 package.response() = apdu_res;
1351 b->set_option("setname", "default");
1353 bool enable_pz2_retrieval = false;
1354 bool enable_pz2_transform = false;
1355 bool assume_marc8_charset = false;
1356 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
1357 enable_pz2_retrieval,
1358 enable_pz2_transform,
1359 assume_marc8_charset);
1362 Z_Query *query = sr->query;
1363 WRBUF ccl_wrbuf = 0;
1364 WRBUF pqf_wrbuf = 0;
1365 std::string sortkeys;
1367 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
1370 pqf_wrbuf = wrbuf_alloc();
1371 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
1373 else if (query->which == Z_Query_type_2)
1376 ccl_wrbuf = wrbuf_alloc();
1377 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
1378 query->u.type_2->len);
1380 else if (query->which == Z_Query_type_104 &&
1381 query->u.type_104->which == Z_External_CQL)
1384 const char *cql = query->u.type_104->u.cql;
1385 CQL_parser cp = cql_parser_create();
1386 int r = cql_parser_string(cp, cql);
1387 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
1390 cql_parser_destroy(cp);
1391 package.log("zoom", YLOG_WARN, "CQL syntax error");
1393 odr.create_searchResponse(apdu_req,
1394 YAZ_BIB1_MALFORMED_QUERY,
1395 "CQL syntax error");
1396 package.response() = apdu_res;
1399 struct cql_node *cn = cql_parser_result(cp);
1400 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
1403 // hopefully we are getting a ptr to a index+relation+term node
1405 if (cn_error->which == CQL_NODE_ST)
1406 addinfo = cn_error->u.st.index;
1409 odr.create_searchResponse(apdu_req,
1410 YAZ_BIB1_UNSUPP_USE_ATTRIBUTE,
1412 package.response() = apdu_res;
1417 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
1420 ccl_wrbuf = wrbuf_alloc();
1421 wrbuf_puts(ccl_wrbuf, ccl_buf);
1423 WRBUF sru_sortkeys_wrbuf = wrbuf_alloc();
1425 cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf);
1426 WRBUF sort_spec_wrbuf = wrbuf_alloc();
1427 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
1429 wrbuf_destroy(sru_sortkeys_wrbuf);
1431 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
1432 yaz_tok_parse_t tp =
1433 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
1434 yaz_tok_cfg_destroy(tc);
1436 /* go through sortspec and map fields */
1437 int token = yaz_tok_move(tp);
1438 while (token != YAZ_TOK_EOF)
1440 if (token == YAZ_TOK_STRING)
1442 const char *field = yaz_tok_parse_string(tp);
1443 std::map<std::string,std::string>::iterator it;
1444 it = b->sptr->sortmap.find(field);
1445 if (it != b->sptr->sortmap.end())
1446 sortkeys += it->second;
1451 token = yaz_tok_move(tp);
1452 if (token == YAZ_TOK_STRING)
1454 sortkeys += yaz_tok_parse_string(tp);
1456 if (token != YAZ_TOK_EOF)
1459 token = yaz_tok_move(tp);
1462 yaz_tok_parse_destroy(tp);
1463 wrbuf_destroy(sort_spec_wrbuf);
1465 cql_parser_destroy(cp);
1469 odr.create_searchResponse(apdu_req,
1470 YAZ_BIB1_MALFORMED_QUERY,
1471 "CQL to CCL conversion error");
1472 package.response() = apdu_res;
1479 odr.create_searchResponse(apdu_req, YAZ_BIB1_QUERY_TYPE_UNSUPP, 0);
1480 package.response() = apdu_res;
1487 assert(pqf_wrbuf == 0);
1489 struct ccl_rpn_node *cn;
1490 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
1491 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
1493 wrbuf_destroy(ccl_wrbuf);
1496 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
1497 int z3950_diag = YAZ_BIB1_MALFORMED_QUERY;
1501 case CCL_ERR_UNKNOWN_QUAL:
1502 z3950_diag = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
1504 case CCL_ERR_TRUNC_NOT_LEFT:
1505 case CCL_ERR_TRUNC_NOT_RIGHT:
1506 case CCL_ERR_TRUNC_NOT_BOTH:
1507 z3950_diag = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1511 odr.create_searchResponse(apdu_req, z3950_diag, addinfo);
1512 package.response() = apdu_res;
1515 pqf_wrbuf = wrbuf_alloc();
1516 ccl_pquery(pqf_wrbuf, cn);
1517 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
1523 ZOOM_query q = ZOOM_query_create();
1524 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
1526 if (b->get_option("sru"))
1530 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1531 WRBUF wrb = wrbuf_alloc();
1533 if (!strcmp(b->get_option("sru"), "solr"))
1535 solr_transform_t cqlt = solr_transform_create();
1537 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1539 solr_transform_close(cqlt);
1543 cql_transform_t cqlt = cql_transform_create();
1545 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1547 cql_transform_close(cqlt);
1551 ZOOM_query_cql(q, wrbuf_cstr(wrb));
1552 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
1553 b->search(q, &hits, &error, &addinfo, odr);
1555 ZOOM_query_destroy(q);
1558 wrbuf_destroy(pqf_wrbuf);
1562 odr.create_searchResponse(apdu_req, YAZ_BIB1_MALFORMED_QUERY,
1563 "can not convert from RPN to CQL/SOLR");
1564 package.response() = apdu_res;
1570 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
1571 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1572 b->search(q, &hits, &error, &addinfo, odr);
1573 ZOOM_query_destroy(q);
1574 wrbuf_destroy(pqf_wrbuf);
1577 const char *element_set_name = 0;
1578 Odr_int number_to_present = 0;
1580 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1582 Odr_int number_of_records_returned = 0;
1583 Z_Records *records = get_records(
1584 0, number_to_present, &error, &addinfo,
1585 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1587 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1590 apdu_res->u.searchResponse->records = records;
1591 apdu_res->u.searchResponse->numberOfRecordsReturned =
1592 odr_intdup(odr, number_of_records_returned);
1594 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1595 package.response() = apdu_res;
1598 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1600 Z_GDU *gdu = package.request().get();
1601 Z_APDU *apdu_req = gdu->u.z3950;
1602 Z_APDU *apdu_res = 0;
1603 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1608 package.response() = odr.create_presentResponse(
1609 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1612 const char *element_set_name = 0;
1613 Z_RecordComposition *comp = pr->recordComposition;
1614 if (comp && comp->which != Z_RecordComp_simple)
1616 package.response() = odr.create_presentResponse(
1618 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1621 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1622 element_set_name = comp->u.simple->u.generic;
1623 Odr_int number_of_records_returned = 0;
1626 Z_Records *records = get_records(
1627 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1628 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1629 pr->preferredRecordSyntax, element_set_name);
1631 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1634 apdu_res->u.presentResponse->records = records;
1635 apdu_res->u.presentResponse->numberOfRecordsReturned =
1636 odr_intdup(odr, number_of_records_returned);
1638 package.response() = apdu_res;
1641 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1643 Z_GDU *gdu = package.request().get();
1646 else if (gdu->which == Z_GDU_Z3950)
1648 Z_APDU *apdu_req = gdu->u.z3950;
1651 wrbuf_rewind(m_backend->m_apdu_wrbuf);
1652 if (apdu_req->which == Z_APDU_initRequest)
1655 package.response() = odr.create_close(
1657 Z_Close_protocolError,
1660 else if (apdu_req->which == Z_APDU_searchRequest)
1662 handle_search(package);
1664 else if (apdu_req->which == Z_APDU_presentRequest)
1666 handle_present(package);
1671 package.response() = odr.create_close(
1673 Z_Close_protocolError,
1674 "zoom filter cannot handle this APDU");
1675 package.session().close();
1679 WRBUF w = m_backend->m_apdu_wrbuf;
1680 package.log_write(wrbuf_buf(w), wrbuf_len(w));
1685 package.session().close();
1689 void yf::Zoom::Impl::process(mp::Package &package)
1691 FrontendPtr f = get_frontend(package);
1692 Z_GDU *gdu = package.request().get();
1694 if (f->m_is_virtual)
1696 f->handle_package(package);
1698 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1701 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1702 f->m_init_gdu = gdu;
1705 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1706 Z_InitResponse *resp = apdu->u.initResponse;
1709 static const int masks[] = {
1714 for (i = 0; masks[i] != -1; i++)
1715 if (ODR_MASK_GET(req->options, masks[i]))
1716 ODR_MASK_SET(resp->options, masks[i]);
1718 static const int versions[] = {
1719 Z_ProtocolVersion_1,
1720 Z_ProtocolVersion_2,
1721 Z_ProtocolVersion_3,
1724 for (i = 0; versions[i] != -1; i++)
1725 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1726 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1730 *resp->preferredMessageSize = *req->preferredMessageSize;
1731 *resp->maximumRecordSize = *req->maximumRecordSize;
1733 package.response() = apdu;
1734 f->m_is_virtual = true;
1739 release_frontend(package);
1743 static mp::filter::Base* filter_creator()
1745 return new mp::filter::Zoom;
1749 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1760 * c-file-style: "Stroustrup"
1761 * indent-tabs-mode: nil
1763 * vim: shiftwidth=4 tabstop=8 expandtab