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>
27 #include <yaz/comstack.h>
31 #include <libxslt/xsltutils.h>
32 #include <libxslt/transform.h>
34 #include <boost/thread/mutex.hpp>
35 #include <boost/thread/condition.hpp>
37 #include <yaz/yaz-version.h>
38 #include <yaz/tpath.h>
40 #include <yaz/ccl_xml.h>
42 #include <yaz/rpn2cql.h>
43 #include <yaz/rpn2solr.h>
44 #include <yaz/pquery.h>
46 #include <yaz/oid_db.h>
47 #include <yaz/diagbib1.h>
50 #include <yaz/querytowrbuf.h>
51 #include <yaz/sortspec.h>
52 #include <yaz/tokenizer.h>
55 namespace mp = metaproxy_1;
56 namespace yf = mp::filter;
58 namespace metaproxy_1 {
60 class Zoom::Searchable : boost::noncopyable {
62 std::string authentication;
68 std::string query_encoding;
70 std::string sru_version;
71 std::string request_syntax;
72 std::string element_set;
73 std::string record_encoding;
74 std::string transform_xsl_fname;
75 std::string transform_xsl_content;
76 std::string urlRecipe;
77 std::string contentConnector;
78 std::string sortStrategy;
79 std::string rpn2cql_fname;
82 CCL_bibset ccl_bibset;
83 std::map<std::string, std::string> sortmap;
84 Searchable(CCL_bibset base);
87 class Zoom::Backend : boost::noncopyable {
89 friend class Frontend;
91 mp::wrbuf m_apdu_wrbuf;
92 ZOOM_connection m_connection;
93 ZOOM_resultset m_resultset;
94 std::string m_frontend_database;
96 xsltStylesheetPtr xsp;
97 std::string cproxy_host;
102 cql_transform_t cqlt;
106 void connect(std::string zurl, int *error, char **addinfo,
108 void search(ZOOM_query q, Odr_int *hits,
109 int *error, char **addinfo, ODR odr);
110 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
111 int *error, char **addinfo, ODR odr);
112 void set_option(const char *name, const char *value);
113 void set_option(const char *name, std::string value);
114 const char *get_option(const char *name);
115 void get_zoom_error(int *error, char **addinfo, ODR odr);
117 class Zoom::Frontend : boost::noncopyable {
122 yazpp_1::GDU m_init_gdu;
123 BackendPtr m_backend;
124 void handle_package(mp::Package &package);
125 void handle_search(mp::Package &package);
127 BackendPtr explain_search(mp::Package &package,
128 std::string &database,
132 std::string torus_url,
133 std::string &torus_db,
135 void handle_present(mp::Package &package);
136 BackendPtr get_backend_from_databases(mp::Package &package,
137 std::string &database,
143 bool create_content_session(mp::Package &package,
148 std::string authentication,
152 void prepare_elements(BackendPtr b,
153 Odr_oid *preferredRecordSyntax,
154 const char *element_set_name,
155 bool &enable_pz2_retrieval,
156 bool &enable_pz2_transform,
157 bool &enable_record_transform,
158 bool &assume_marc8_charset);
160 Z_Records *get_records(Package &package,
162 Odr_int number_to_present,
165 Odr_int *number_of_records_returned,
166 ODR odr, BackendPtr b,
167 Odr_oid *preferredRecordSyntax,
168 const char *element_set_name);
169 Z_Records *get_explain_records(Package &package,
171 Odr_int number_to_present,
174 Odr_int *number_of_records_returned,
175 ODR odr, BackendPtr b,
176 Odr_oid *preferredRecordSyntax,
177 const char *element_set_name);
178 bool retry(mp::Package &package,
181 int &error, char **addinfo,
182 int &proxy_step, int &same_retries,
184 void log_diagnostic(mp::Package &package,
185 int error, const char *addinfo);
187 Frontend(Impl *impl);
191 friend class Frontend;
195 void process(metaproxy_1::Package & package);
196 void configure(const xmlNode * ptr, bool test_only,
199 void configure_local_records(const xmlNode * ptr, bool test_only);
200 bool check_proxy(const char *proxy);
204 FrontendPtr get_frontend(mp::Package &package);
205 void release_frontend(mp::Package &package);
206 SearchablePtr parse_torus_record(const xmlNode *ptr);
207 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
208 std::map<mp::Session, FrontendPtr> m_clients;
209 boost::mutex m_mutex;
210 boost::condition m_cond_session_ready;
211 std::string torus_searchable_url;
212 std::string torus_content_url;
213 std::string default_realm;
214 std::map<std::string,std::string> fieldmap;
216 std::string file_path;
217 std::string content_proxy_server;
218 std::string content_tmp_file;
219 std::string content_config_file;
222 std::string element_transform;
223 std::string element_raw;
225 xsltStylesheetPtr explain_xsp;
226 xsltStylesheetPtr record_xsp;
227 std::map<std::string,SearchablePtr> s_map;
228 std::string zoom_timeout;
235 static xmlNode *xml_node_search(xmlNode *ptr, int *num, int m)
239 if (ptr->type == XML_ELEMENT_NODE &&
240 !strcmp((const char *) ptr->name, "recordData"))
246 else // else: we don't want to find nested nodes
248 xmlNode *ret_node = xml_node_search(ptr->children, num, m);
257 // define Pimpl wrapper forwarding to Impl
259 yf::Zoom::Zoom() : m_p(new Impl)
264 { // must have a destructor because of boost::scoped_ptr
267 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only,
270 m_p->configure(xmlnode, test_only, path);
273 void yf::Zoom::process(mp::Package &package) const
275 m_p->process(package);
279 // define Implementation stuff
281 yf::Zoom::Backend::Backend()
283 m_connection = ZOOM_connection_create(0);
284 ZOOM_connection_save_apdu_wrbuf(m_connection, m_apdu_wrbuf);
287 enable_cproxy = true;
288 enable_explain = false;
292 yf::Zoom::Backend::~Backend()
295 xsltFreeStylesheet(xsp);
297 xmlFreeDoc(explain_doc);
298 cql_transform_close(cqlt);
299 ZOOM_connection_destroy(m_connection);
300 ZOOM_resultset_destroy(m_resultset);
304 void yf::Zoom::Backend::get_zoom_error(int *error, char **addinfo,
308 const char *zoom_addinfo = 0;
309 const char *dset = 0;
310 int error0 = ZOOM_connection_error_x(m_connection, &msg,
311 &zoom_addinfo, &dset);
317 if (!strcmp(dset, "info:srw/diagnostic/1"))
318 *error = yaz_diag_srw_to_bib1(error0);
319 else if (!strcmp(dset, "Bib-1"))
321 else if (!strcmp(dset, "ZOOM"))
323 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
324 if (error0 == ZOOM_ERROR_INIT)
325 *error = YAZ_BIB1_INIT_AC_AUTHENTICATION_SYSTEM_ERROR;
326 else if (error0 == ZOOM_ERROR_DECODE)
330 if (strstr(zoom_addinfo, "Authentication") ||
331 strstr(zoom_addinfo, "authentication"))
332 *error = YAZ_BIB1_INIT_AC_AUTHENTICATION_SYSTEM_ERROR;
337 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
339 *addinfo = (char *) odr_malloc(
340 odr, 30 + strlen(dset) + strlen(msg) +
341 (zoom_addinfo ? strlen(zoom_addinfo) : 0));
343 if (zoom_addinfo && *zoom_addinfo)
345 strcpy(*addinfo, zoom_addinfo);
346 strcat(*addinfo, " ");
348 sprintf(*addinfo + strlen(*addinfo), "(%s %d %s)", dset, error0, msg);
352 void yf::Zoom::Backend::connect(std::string zurl,
353 int *error, char **addinfo,
356 ZOOM_connection_connect(m_connection, zurl.length() ? zurl.c_str() : 0, 0);
357 get_zoom_error(error, addinfo, odr);
360 void yf::Zoom::Backend::search(ZOOM_query q, Odr_int *hits,
361 int *error, char **addinfo, ODR odr)
363 ZOOM_resultset_destroy(m_resultset);
364 m_resultset = ZOOM_connection_search(m_connection, q);
365 get_zoom_error(error, addinfo, odr);
367 *hits = ZOOM_resultset_size(m_resultset);
372 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
374 int *error, char **addinfo, ODR odr)
376 ZOOM_resultset_records(m_resultset, recs, start, number);
377 get_zoom_error(error, addinfo, odr);
380 void yf::Zoom::Backend::set_option(const char *name, const char *value)
382 ZOOM_connection_option_set(m_connection, name, value);
384 ZOOM_resultset_option_set(m_resultset, name, value);
387 void yf::Zoom::Backend::set_option(const char *name, std::string value)
389 set_option(name, value.c_str());
392 const char *yf::Zoom::Backend::get_option(const char *name)
394 return ZOOM_connection_option_get(m_connection, name);
397 yf::Zoom::Searchable::Searchable(CCL_bibset base)
400 use_turbomarc = true;
401 sortStrategy = "embed";
402 ccl_bibset = ccl_qual_dup(base);
405 yf::Zoom::Searchable::~Searchable()
407 ccl_qual_rm(&ccl_bibset);
410 yf::Zoom::Frontend::Frontend(Impl *impl) :
411 m_p(impl), m_is_virtual(false), m_in_use(true)
415 yf::Zoom::Frontend::~Frontend()
419 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
421 boost::mutex::scoped_lock lock(m_mutex);
423 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
427 it = m_clients.find(package.session());
428 if (it == m_clients.end())
431 if (!it->second->m_in_use)
433 it->second->m_in_use = true;
436 m_cond_session_ready.wait(lock);
438 FrontendPtr f(new Frontend(this));
439 m_clients[package.session()] = f;
444 void yf::Zoom::Impl::release_frontend(mp::Package &package)
446 boost::mutex::scoped_lock lock(m_mutex);
447 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
449 it = m_clients.find(package.session());
450 if (it != m_clients.end())
452 if (package.session().is_closed())
458 it->second->m_in_use = false;
460 m_cond_session_ready.notify_all();
464 yf::Zoom::Impl::Impl() :
465 apdu_log(false), element_transform("pz2") , element_raw("raw"),
466 zoom_timeout("40"), proxy_timeout(1)
468 bibset = ccl_qual_mk();
472 srand((unsigned int) time(0));
475 yf::Zoom::Impl::~Impl()
478 xsltFreeStylesheet(explain_xsp);
479 ccl_qual_rm(&bibset);
482 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
484 Zoom::SearchablePtr s(new Searchable(bibset));
486 for (ptr = ptr->children; ptr; ptr = ptr->next)
488 if (ptr->type != XML_ELEMENT_NODE)
490 if (!strcmp((const char *) ptr->name, "layer"))
492 else if (!strcmp((const char *) ptr->name,
495 s->authentication = mp::xml::get_text(ptr);
497 else if (!strcmp((const char *) ptr->name,
500 s->cfAuth = mp::xml::get_text(ptr);
502 else if (!strcmp((const char *) ptr->name,
505 s->cfProxy = mp::xml::get_text(ptr);
507 else if (!strcmp((const char *) ptr->name,
510 s->cfSubDB = mp::xml::get_text(ptr);
512 else if (!strcmp((const char *) ptr->name,
515 s->contentConnector = mp::xml::get_text(ptr);
517 else if (!strcmp((const char *) ptr->name, "udb"))
519 s->udb = mp::xml::get_text(ptr);
521 else if (!strcmp((const char *) ptr->name, "zurl"))
523 s->target = mp::xml::get_text(ptr);
525 else if (!strcmp((const char *) ptr->name, "sru"))
527 s->sru = mp::xml::get_text(ptr);
529 else if (!strcmp((const char *) ptr->name, "SRUVersion") ||
530 !strcmp((const char *) ptr->name, "sruVersion"))
532 s->sru_version = mp::xml::get_text(ptr);
534 else if (!strcmp((const char *) ptr->name,
537 s->query_encoding = mp::xml::get_text(ptr);
539 else if (!strcmp((const char *) ptr->name,
542 s->piggyback = mp::xml::get_bool(ptr, true);
544 else if (!strcmp((const char *) ptr->name,
547 s->request_syntax = mp::xml::get_text(ptr);
549 else if (!strcmp((const char *) ptr->name,
552 s->element_set = mp::xml::get_text(ptr);
554 else if (!strcmp((const char *) ptr->name,
557 s->record_encoding = mp::xml::get_text(ptr);
559 else if (!strcmp((const char *) ptr->name,
562 s->transform_xsl_fname = mp::xml::get_text(ptr);
564 else if (!strcmp((const char *) ptr->name,
567 s->transform_xsl_content = mp::xml::get_text(ptr);
569 else if (!strcmp((const char *) ptr->name,
572 s->urlRecipe = mp::xml::get_text(ptr);
574 else if (!strcmp((const char *) ptr->name,
577 ; // useTurboMarc is ignored
579 else if (!strncmp((const char *) ptr->name,
582 std::string value = mp::xml::get_text(ptr);
583 if (value.length() > 0)
585 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
586 (const char *) ptr->name + 7);
589 else if (!strncmp((const char *) ptr->name,
592 std::string value = mp::xml::get_text(ptr);
593 s->sortmap[(const char *) ptr->name + 8] = value;
595 else if (!strcmp((const char *) ptr->name,
598 s->sortStrategy = mp::xml::get_text(ptr);
600 else if (!strcmp((const char *) ptr->name, "rpn2cql"))
601 s->rpn2cql_fname = mp::xml::get_text(ptr);
606 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
608 while (ptr && ptr->type != XML_ELEMENT_NODE)
613 if (!strcmp((const char *) ptr->name, "records"))
615 for (ptr = ptr->children; ptr; ptr = ptr->next)
617 if (ptr->type != XML_ELEMENT_NODE)
619 if (!strcmp((const char *) ptr->name, "record"))
621 SearchablePtr s = parse_torus_record(ptr);
624 std::string udb = s->udb;
629 throw mp::filter::FilterException
630 ("No udb for local torus record");
636 throw mp::filter::FilterException
638 + std::string((const char *) ptr->name)
639 + " in zoom filter inside element "
646 throw mp::filter::FilterException
648 + std::string((const char *) ptr->name)
649 + " in zoom filter inside element <torus>");
654 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
657 std::string explain_xslt_fname;
658 std::string record_xslt_fname;
664 for (ptr = ptr->children; ptr; ptr = ptr->next)
666 if (ptr->type != XML_ELEMENT_NODE)
668 else if (!strcmp((const char *) ptr->name, "torus"))
670 const struct _xmlAttr *attr;
671 for (attr = ptr->properties; attr; attr = attr->next)
673 if (!strcmp((const char *) attr->name, "url"))
674 torus_searchable_url = mp::xml::get_text(attr->children);
675 else if (!strcmp((const char *) attr->name, "content_url"))
676 torus_content_url = mp::xml::get_text(attr->children);
677 else if (!strcmp((const char *) attr->name, "realm"))
678 default_realm = mp::xml::get_text(attr->children);
679 else if (!strcmp((const char *) attr->name, "xsldir"))
680 xsldir = mp::xml::get_text(attr->children);
681 else if (!strcmp((const char *) attr->name, "element_transform"))
682 element_transform = mp::xml::get_text(attr->children);
683 else if (!strcmp((const char *) attr->name, "element_raw"))
684 element_raw = mp::xml::get_text(attr->children);
685 else if (!strcmp((const char *) attr->name, "proxy"))
686 proxy = mp::xml::get_text(attr->children);
687 else if (!strcmp((const char *) attr->name, "explain_xsl"))
688 explain_xslt_fname = mp::xml::get_text(attr->children);
689 else if (!strcmp((const char *) attr->name, "record_xsl"))
690 record_xslt_fname = mp::xml::get_text(attr->children);
692 throw mp::filter::FilterException(
693 "Bad attribute " + std::string((const char *)
696 // If content_url is not given, use value of searchable, to
697 // ensure backwards compatibility
698 if (!torus_content_url.length())
699 torus_content_url = torus_searchable_url;
700 configure_local_records(ptr->children, test_only);
702 else if (!strcmp((const char *) ptr->name, "cclmap"))
704 const char *addinfo = 0;
705 ccl_xml_config(bibset, ptr, &addinfo);
707 else if (!strcmp((const char *) ptr->name, "fieldmap"))
709 const struct _xmlAttr *attr;
710 std::string ccl_field;
711 std::string cql_field;
712 for (attr = ptr->properties; attr; attr = attr->next)
714 if (!strcmp((const char *) attr->name, "ccl"))
715 ccl_field = mp::xml::get_text(attr->children);
716 else if (!strcmp((const char *) attr->name, "cql"))
717 cql_field = mp::xml::get_text(attr->children);
719 throw mp::filter::FilterException(
720 "Bad attribute " + std::string((const char *)
723 if (cql_field.length())
724 fieldmap[cql_field] = ccl_field;
726 else if (!strcmp((const char *) ptr->name, "contentProxy"))
728 const struct _xmlAttr *attr;
729 for (attr = ptr->properties; attr; attr = attr->next)
731 if (!strcmp((const char *) attr->name, "server"))
734 "contentProxy's server attribute is deprecated");
736 "Specify config_file instead. For example:");
738 " content_file=\"/etc/cf-proxy/cproxy.cfg\"");
739 content_proxy_server = mp::xml::get_text(attr->children);
741 else if (!strcmp((const char *) attr->name, "tmp_file"))
742 content_tmp_file = mp::xml::get_text(attr->children);
743 else if (!strcmp((const char *) attr->name, "config_file"))
744 content_config_file = mp::xml::get_text(attr->children);
746 throw mp::filter::FilterException(
747 "Bad attribute " + std::string((const char *)
751 else if (!strcmp((const char *) ptr->name, "log"))
753 const struct _xmlAttr *attr;
754 for (attr = ptr->properties; attr; attr = attr->next)
756 if (!strcmp((const char *) attr->name, "apdu"))
757 apdu_log = mp::xml::get_bool(attr->children, false);
759 throw mp::filter::FilterException(
760 "Bad attribute " + std::string((const char *)
764 else if (!strcmp((const char *) ptr->name, "zoom"))
766 const struct _xmlAttr *attr;
767 for (attr = ptr->properties; attr; attr = attr->next)
769 if (!strcmp((const char *) attr->name, "timeout"))
770 zoom_timeout = mp::xml::get_text(attr->children);
771 else if (!strcmp((const char *) attr->name, "proxy_timeout"))
772 proxy_timeout = mp::xml::get_int(attr->children, 1);
774 throw mp::filter::FilterException(
775 "Bad attribute " + std::string((const char *)
781 throw mp::filter::FilterException
783 + std::string((const char *) ptr->name)
784 + " in zoom filter");
788 if (explain_xslt_fname.length())
790 const char *path = 0;
793 path = xsldir.c_str();
795 path = file_path.c_str();
798 char *cp = yaz_filepath_resolve(explain_xslt_fname.c_str(),
802 throw mp::filter::FilterException
803 ("Cannot read XSLT " + explain_xslt_fname);
806 xmlDoc *xsp_doc = xmlParseFile(cp);
809 throw mp::filter::FilterException
810 ("Cannot parse XSLT " + explain_xslt_fname);
813 explain_xsp = xsltParseStylesheetDoc(xsp_doc);
817 throw mp::filter::FilterException
818 ("Cannot parse XSLT " + explain_xslt_fname);
823 if (record_xslt_fname.length())
825 const char *path = 0;
828 path = xsldir.c_str();
830 path = file_path.c_str();
833 char *cp = yaz_filepath_resolve(record_xslt_fname.c_str(),
837 throw mp::filter::FilterException
838 ("Cannot read XSLT " + record_xslt_fname);
841 xmlDoc *xsp_doc = xmlParseFile(cp);
844 throw mp::filter::FilterException
845 ("Cannot parse XSLT " + record_xslt_fname);
848 record_xsp = xsltParseStylesheetDoc(xsp_doc);
852 throw mp::filter::FilterException
853 ("Cannot parse XSLT " + record_xslt_fname);
859 bool yf::Zoom::Frontend::create_content_session(mp::Package &package,
861 int *error, char **addinfo,
863 std::string authentication,
867 if (b->sptr->contentConnector.length())
869 std::string proxyhostname;
870 std::string tmp_file;
871 bool legacy_format = false;
873 if (m_p->content_proxy_server.length())
875 proxyhostname = m_p->content_proxy_server;
876 legacy_format = true;
879 if (m_p->content_tmp_file.length())
880 tmp_file = m_p->content_tmp_file;
882 if (m_p->content_config_file.length())
884 FILE *inf = fopen(m_p->content_config_file.c_str(), "r");
888 while (fgets(buf, sizeof(buf)-1, inf))
891 cp = strchr(buf, '#');
894 cp = strchr(buf, '\n');
897 cp = strchr(buf, ':');
901 while (cp1 != buf && cp1[-1] == ' ')
907 if (!strcmp(buf, "proxyhostname"))
909 if (!strcmp(buf, "sessiondir") && *cp)
911 if (cp[strlen(cp)-1] == '/')
912 cp[strlen(cp)-1] = '\0';
913 tmp_file = std::string(cp) + std::string("/cf.XXXXXX.p");
921 package.log("zoom", YLOG_WARN|YLOG_ERRNO,
922 "unable to open content config %s",
923 m_p->content_config_file.c_str());
924 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
925 *addinfo = (char *) odr_malloc(odr, 60 + tmp_file.length());
926 sprintf(*addinfo, "unable to open content config %s",
927 m_p->content_config_file.c_str());
932 if (proxyhostname.length() == 0)
934 package.log("zoom", YLOG_WARN, "no proxyhostname");
937 if (tmp_file.length() == 0)
939 package.log("zoom", YLOG_WARN, "no tmp_file");
943 char *fname = xstrdup(tmp_file.c_str());
944 char *xx = strstr(fname, "XXXXXX");
947 package.log("zoom", YLOG_WARN, "bad tmp_file %s", tmp_file.c_str());
948 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
949 *addinfo = (char *) odr_malloc(odr, 60 + tmp_file.length());
950 sprintf(*addinfo, "bad format of content tmp_file: %s",
955 char tmp_char = xx[6];
956 sprintf(xx, "%06d", ((unsigned) rand()) % 1000000);
958 b->cproxy_host = std::string(xx) + "." + proxyhostname;
960 b->cproxy_host = proxyhostname + "/" + xx;
963 FILE *file = fopen(fname, "w");
966 package.log("zoom", YLOG_WARN|YLOG_ERRNO, "create %s", fname);
967 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
968 *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname));
969 sprintf(*addinfo, "Could not create %s", fname);
974 wrbuf_puts(w, "#content_proxy\n");
975 wrbuf_printf(w, "connector: %s\n", b->sptr->contentConnector.c_str());
976 if (authentication.length())
977 wrbuf_printf(w, "auth: %s\n", authentication.c_str());
979 wrbuf_printf(w, "proxy: %s\n", proxy.c_str());
981 wrbuf_printf(w, "realm: %s\n", realm.c_str());
983 fwrite(w.buf(), 1, w.len(), file);
985 package.log("zoom", YLOG_LOG, "content file: %s", fname);
991 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
992 mp::Package &package,
993 std::string &database, int *error, char **addinfo, mp::odr &odr,
996 bool connection_reuse = false;
999 std::list<BackendPtr>::const_iterator map_it;
1000 if (m_backend && !m_backend->enable_explain &&
1001 m_backend->m_frontend_database == database)
1003 connection_reuse = true;
1004 proxy = m_backend->m_proxy;
1007 std::string input_args;
1008 std::string torus_db;
1009 size_t db_arg_pos = database.find(',');
1010 if (db_arg_pos != std::string::npos)
1012 torus_db = database.substr(0, db_arg_pos);
1013 input_args = database.substr(db_arg_pos + 1);
1016 torus_db = database;
1018 std::string authentication;
1019 std::string content_authentication;
1020 std::string content_proxy;
1021 std::string realm = m_p->default_realm;
1023 const char *param_user = 0;
1024 const char *param_password = 0;
1025 const char *param_content_user = 0;
1026 const char *param_content_password = 0;
1027 const char *param_nocproxy = 0;
1032 int no_out_args = 0;
1033 if (input_args.length())
1034 no_parms = yaz_uri_to_array(input_args.c_str(),
1035 odr, &names, &values);
1036 // adding 10 because we'll be adding other URL args
1037 const char **out_names = (const char **)
1038 odr_malloc(odr, (10 + no_parms) * sizeof(*out_names));
1039 const char **out_values = (const char **)
1040 odr_malloc(odr, (10 + no_parms) * sizeof(*out_values));
1042 // may be changed if it's a content connection
1043 std::string torus_url = m_p->torus_searchable_url;
1045 for (i = 0; i < no_parms; i++)
1047 const char *name = names[i];
1048 const char *value = values[i];
1051 if (!strcmp(name, "user"))
1053 else if (!strcmp(name, "password"))
1054 param_password = value;
1055 else if (!strcmp(name, "content-user"))
1056 param_content_user = value;
1057 else if (!strcmp(name, "content-password"))
1058 param_content_password = value;
1059 else if (!strcmp(name, "content-proxy"))
1060 content_proxy = value;
1061 else if (!strcmp(name, "nocproxy"))
1062 param_nocproxy = value;
1063 else if (!strcmp(name, "proxy"))
1067 nmem_strsplit(((ODR) odr)->mem, ",", value, &dstr, &dnum);
1068 if (connection_reuse)
1070 // find the step after our current proxy
1072 for (i = 0; i < dnum; i++)
1073 if (!strcmp(proxy.c_str(), dstr[i]))
1078 *proxy_step = i + 1;
1082 // step is known.. Guess our proxy from it
1083 if (*proxy_step >= dnum)
1087 proxy = dstr[*proxy_step];
1090 if (*proxy_step == dnum)
1095 else if (!strcmp(name, "cproxysession"))
1097 out_names[no_out_args] = name;
1098 out_values[no_out_args++] = value;
1099 torus_url = m_p->torus_content_url;
1101 else if (!strcmp(name, "realm"))
1103 else if (!strcmp(name, "torus_url"))
1105 else if (name[0] == 'x' && name[1] == '-')
1107 out_names[no_out_args] = name;
1108 out_values[no_out_args++] = value;
1112 BackendPtr notfound;
1113 char *msg = (char*) odr_malloc(odr, strlen(name) + 30);
1114 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1115 sprintf(msg, "Bad database argument: %s", name);
1121 package.log("zoom", YLOG_LOG, "proxy: %s", proxy.c_str());
1123 if (connection_reuse)
1125 m_backend->connect("", error, addinfo, odr);
1131 authentication = std::string(param_user);
1133 authentication += "/" + std::string(param_password);
1135 if (param_content_user)
1137 content_authentication = std::string(param_content_user);
1138 if (param_content_password)
1139 content_authentication += "/" + std::string(param_content_password);
1142 if (torus_db.compare("IR-Explain---1") == 0)
1143 return explain_search(package, database, error, addinfo, odr, torus_url,
1148 std::map<std::string,SearchablePtr>::iterator it;
1149 it = m_p->s_map.find(torus_db);
1150 if (it != m_p->s_map.end())
1152 else if (torus_url.length() > 0)
1154 std::string torus_query = "udb==" + torus_db;
1155 xmlDoc *doc = mp::get_searchable(package,torus_url, torus_db,
1160 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1161 *addinfo = odr_strdup(odr, "Torus server unavailable or "
1162 "incorrectly configured");
1166 const xmlNode *ptr = xmlDocGetRootElement(doc);
1168 { // presumably ptr is a records element node
1169 // parse first record in document
1170 for (ptr = ptr->children; ptr; ptr = ptr->next)
1172 if (ptr->type == XML_ELEMENT_NODE
1173 && !strcmp((const char *) ptr->name, "record"))
1177 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1178 *addinfo = (char*) odr_malloc(odr, 40 + database.length()),
1179 sprintf(*addinfo, "multiple records for udb=%s",
1185 sptr = m_p->parse_torus_record(ptr);
1194 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1195 *addinfo = odr_strdup(odr, torus_db.c_str());
1200 xsltStylesheetPtr xsp = 0;
1201 if (sptr->transform_xsl_content.length())
1203 xmlDoc *xsp_doc = xmlParseMemory(sptr->transform_xsl_content.c_str(),
1204 sptr->transform_xsl_content.length());
1207 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1208 *addinfo = (char *) odr_malloc(odr, 40);
1209 sprintf(*addinfo, "xmlParseMemory failed");
1213 xsp = xsltParseStylesheetDoc(xsp_doc);
1216 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1217 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
1219 xmlFreeDoc(xsp_doc);
1223 else if (sptr->transform_xsl_fname.length())
1225 const char *path = 0;
1227 if (m_p->xsldir.length())
1228 path = m_p->xsldir.c_str();
1230 path = m_p->file_path.c_str();
1233 char fullpath[1024];
1234 char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
1240 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1242 odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
1243 sprintf(*addinfo, "File could not be read: %s",
1244 sptr->transform_xsl_fname.c_str());
1248 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
1251 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1252 *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
1253 sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
1257 xsp = xsltParseStylesheetDoc(xsp_doc);
1260 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
1261 *addinfo = odr_strdup(odr, "xsltParseStylesheetDoc failed");
1263 xmlFreeDoc(xsp_doc);
1268 cql_transform_t cqlt = 0;
1269 if (sptr->rpn2cql_fname.length())
1271 char fullpath[1024];
1272 char *cp = yaz_filepath_resolve(sptr->rpn2cql_fname.c_str(),
1273 m_p->file_path.c_str(), 0, fullpath);
1275 cqlt = cql_transform_open_fname(fullpath);
1278 cqlt = cql_transform_create();
1282 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
1283 *addinfo = odr_strdup(odr, "Missing/invalid cql2rpn file");
1285 xsltFreeStylesheet(xsp);
1291 BackendPtr b(new Backend);
1296 b->m_frontend_database = database;
1297 b->enable_cproxy = param_nocproxy ? false : true;
1299 if (sptr->query_encoding.length())
1300 b->set_option("rpnCharset", sptr->query_encoding);
1302 b->set_option("timeout", m_p->zoom_timeout.c_str());
1305 b->set_option("apdulog", "1");
1307 if (sptr->piggyback && sptr->sru.length())
1308 b->set_option("count", "1"); /* some SRU servers INSIST on getting
1309 maximumRecords > 0 */
1310 b->set_option("piggyback", sptr->piggyback ? "1" : "0");
1312 if (authentication.length() == 0)
1313 authentication = sptr->authentication;
1315 if (proxy.length() == 0)
1316 proxy = sptr->cfProxy;
1319 if (sptr->cfAuth.length())
1322 b->set_option("user", sptr->cfAuth);
1323 if (authentication.length())
1325 size_t found = authentication.find('/');
1326 if (found != std::string::npos)
1328 out_names[no_out_args] = "user";
1329 out_values[no_out_args++] =
1330 odr_strdup(odr, authentication.substr(0, found).c_str());
1332 out_names[no_out_args] = "password";
1333 out_values[no_out_args++] =
1334 odr_strdup(odr, authentication.substr(found+1).c_str());
1338 out_names[no_out_args] = "user";
1339 out_values[no_out_args++] =
1340 odr_strdup(odr, authentication.c_str());
1345 out_names[no_out_args] = "proxy";
1346 out_values[no_out_args++] = odr_strdup(odr, proxy.c_str());
1348 if (sptr->cfSubDB.length())
1350 out_names[no_out_args] = "subdatabase";
1351 out_values[no_out_args++] = odr_strdup(odr, sptr->cfSubDB.c_str());
1355 out_names[no_out_args] = "nocproxy";
1356 out_values[no_out_args++] = odr_strdup(odr, param_nocproxy);
1361 size_t found = authentication.find('/');
1363 if (sptr->sru.length() && found != std::string::npos)
1365 b->set_option("user", authentication.substr(0, found));
1366 b->set_option("password", authentication.substr(found+1));
1369 b->set_option("user", authentication);
1372 b->set_option("proxy", proxy);
1375 if (sptr->sru.length())
1377 url = "http://" + sptr->target;
1378 b->set_option("sru", sptr->sru);
1380 if (sptr->sru_version.length())
1381 b->set_option("sru_version", sptr->sru_version);
1390 out_names[no_out_args] = 0; // terminate list
1392 yaz_array_to_uri(&x_args, odr, (char **) out_names,
1393 (char **) out_values);
1394 url += "," + std::string(x_args);
1396 package.log("zoom", YLOG_LOG, "url: %s", url.c_str());
1397 b->connect(url, error, addinfo, odr);
1398 if (*error == 0 && b->enable_cproxy)
1399 create_content_session(package, b, error, addinfo, odr,
1400 content_authentication.length() ?
1401 content_authentication : authentication,
1402 content_proxy.length() ? content_proxy : proxy,
1409 void yf::Zoom::Frontend::prepare_elements(BackendPtr b,
1410 Odr_oid *preferredRecordSyntax,
1411 const char *element_set_name,
1412 bool &enable_pz2_retrieval,
1413 bool &enable_pz2_transform,
1414 bool &enable_record_transform,
1415 bool &assume_marc8_charset)
1417 char oid_name_str[OID_STR_MAX];
1418 const char *syntax_name = 0;
1420 if (preferredRecordSyntax &&
1421 !oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml))
1423 if (element_set_name &&
1424 !strcmp(element_set_name, m_p->element_transform.c_str()))
1426 enable_pz2_retrieval = true;
1427 enable_pz2_transform = true;
1429 else if (element_set_name &&
1430 !strcmp(element_set_name, m_p->element_raw.c_str()))
1432 enable_pz2_retrieval = true;
1434 else if (m_p->record_xsp)
1436 enable_pz2_retrieval = true;
1437 enable_pz2_transform = true;
1438 enable_record_transform = true;
1442 if (enable_pz2_retrieval)
1444 std::string configured_request_syntax = b->sptr->request_syntax;
1445 if (configured_request_syntax.length())
1447 syntax_name = configured_request_syntax.c_str();
1448 const Odr_oid *syntax_oid =
1449 yaz_string_to_oid(yaz_oid_std(), CLASS_RECSYN, syntax_name);
1450 if (!oid_oidcmp(syntax_oid, yaz_oid_recsyn_usmarc)
1451 || !oid_oidcmp(syntax_oid, yaz_oid_recsyn_opac))
1452 assume_marc8_charset = true;
1455 else if (preferredRecordSyntax)
1457 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
1459 if (b->sptr->sru.length())
1460 syntax_name = "XML";
1462 b->set_option("preferredRecordSyntax", syntax_name);
1464 if (enable_pz2_retrieval)
1466 element_set_name = 0;
1467 if (b->sptr->element_set.length())
1468 element_set_name = b->sptr->element_set.c_str();
1471 b->set_option("elementSetName", element_set_name);
1472 if (b->sptr->sru.length() && element_set_name)
1473 b->set_option("schema", element_set_name);
1476 Z_Records *yf::Zoom::Frontend::get_explain_records(
1477 mp::Package &package,
1479 Odr_int number_to_present,
1482 Odr_int *number_of_records_returned,
1485 Odr_oid *preferredRecordSyntax,
1486 const char *element_set_name)
1489 Z_Records *records = 0;
1491 if (!b->explain_doc)
1495 if (number_to_present > 10000)
1496 number_to_present = 10000;
1498 xmlNode *ptr = xmlDocGetRootElement(b->explain_doc);
1500 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1501 odr_malloc(odr, sizeof(*npl));
1502 npl->records = (Z_NamePlusRecord **)
1503 odr_malloc(odr, number_to_present * sizeof(*npl->records));
1505 for (i = 0; i < number_to_present; i++)
1508 xmlNode *res = xml_node_search(ptr, &num, start + i + 1);
1511 xmlBufferPtr xml_buf = xmlBufferCreate();
1512 xmlNode *tmp_node = xmlCopyNode(res->children, 1);
1513 xmlNodeDump(xml_buf, tmp_node->doc, tmp_node, 0, 0);
1515 Z_NamePlusRecord *npr =
1516 (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1517 npr->databaseName = odr_strdup(odr, b->m_frontend_database.c_str());
1518 npr->which = Z_NamePlusRecord_databaseRecord;
1519 npr->u.databaseRecord =
1520 z_ext_record_xml(odr,
1521 (const char *) xml_buf->content, xml_buf->use);
1522 npl->records[i] = npr;
1523 xmlFreeNode(tmp_node);
1524 xmlBufferFree(xml_buf);
1526 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1527 records->which = Z_Records_DBOSD;
1528 records->u.databaseOrSurDiagnostics = npl;
1530 npl->num_records = i;
1531 *number_of_records_returned = i;
1536 Z_Records *yf::Zoom::Frontend::get_records(mp::Package &package,
1538 Odr_int number_to_present,
1541 Odr_int *number_of_records_returned,
1544 Odr_oid *preferredRecordSyntax,
1545 const char *element_set_name)
1547 *number_of_records_returned = 0;
1548 Z_Records *records = 0;
1549 bool enable_pz2_retrieval = false; // whether target profile is used
1550 bool enable_pz2_transform = false; // whether XSLT is used as well
1551 bool assume_marc8_charset = false;
1552 bool enable_record_transform = false;
1554 prepare_elements(b, preferredRecordSyntax,
1556 enable_pz2_retrieval,
1557 enable_pz2_transform,
1558 enable_record_transform,
1559 assume_marc8_charset);
1561 package.log("zoom", YLOG_LOG, "pz2_retrieval: %s . pz2_transform: %s",
1562 enable_pz2_retrieval ? "yes" : "no",
1563 enable_pz2_transform ? "yes" : "no");
1565 if (start < 0 || number_to_present <=0)
1568 if (number_to_present > 10000)
1569 number_to_present = 10000;
1571 ZOOM_record *recs = (ZOOM_record *)
1572 odr_malloc(odr, (size_t) number_to_present * sizeof(*recs));
1574 b->present(start, number_to_present, recs, error, addinfo, odr);
1579 for (i = 0; i < number_to_present; i++)
1584 { // only return records if no error and at least one record
1586 const char *xsl_parms[3];
1587 mp::wrbuf cproxy_host;
1589 if (b->enable_cproxy && b->cproxy_host.length())
1591 wrbuf_puts(cproxy_host, "\"");
1592 wrbuf_puts(cproxy_host, b->cproxy_host.c_str());
1593 wrbuf_puts(cproxy_host, "/\"");
1595 xsl_parms[0] = "cproxyhost";
1596 xsl_parms[1] = wrbuf_cstr(cproxy_host);
1604 char *odr_database = odr_strdup(odr,
1605 b->m_frontend_database.c_str());
1606 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
1607 odr_malloc(odr, sizeof(*npl));
1608 *number_of_records_returned = i;
1609 npl->num_records = i;
1610 npl->records = (Z_NamePlusRecord **)
1611 odr_malloc(odr, i * sizeof(*npl->records));
1612 for (i = 0; i < number_to_present; i++)
1614 Z_NamePlusRecord *npr = 0;
1615 const char *addinfo;
1617 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
1618 &addinfo, 0 /* diagset */);
1622 log_diagnostic(package, sur_error, addinfo);
1623 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
1626 else if (enable_pz2_retrieval)
1628 char rec_type_str[100];
1629 const char *record_encoding = 0;
1631 if (b->sptr->record_encoding.length())
1632 record_encoding = b->sptr->record_encoding.c_str();
1633 else if (assume_marc8_charset)
1634 record_encoding = "marc8";
1636 strcpy(rec_type_str, b->sptr->use_turbomarc ? "txml" : "xml");
1637 if (record_encoding)
1639 strcat(rec_type_str, "; charset=");
1640 strcat(rec_type_str, record_encoding);
1643 package.log("zoom", YLOG_LOG, "Getting record of type %s",
1646 xmlChar *xmlrec_buf = 0;
1647 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
1649 if (!rec_buf && !npr)
1651 std::string addinfo("ZOOM_record_get failed for type ");
1653 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1654 addinfo += rec_type_str;
1655 log_diagnostic(package, error, addinfo.c_str());
1656 npr = zget_surrogateDiagRec(odr, odr_database,
1657 error, addinfo.c_str());
1661 package.log_write(rec_buf, rec_len);
1662 package.log_write("\r\n", 2);
1665 if (rec_buf && b->xsp && enable_pz2_transform)
1667 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
1670 const char *addinfo = "xml parse failed for record";
1671 int error = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1672 log_diagnostic(package, error, addinfo);
1673 npr = zget_surrogateDiagRec(
1674 odr, odr_database, error, addinfo);
1678 // first stage XSLT - per target
1679 xsltStylesheetPtr xsp = b->xsp;
1680 xmlDoc *rec_res = xsltApplyStylesheet(xsp, rec_doc,
1682 // insert generated-url
1686 mp::xml::url_recipe_handle(rec_res,
1687 b->sptr->urlRecipe);
1690 xmlNode *ptr = xmlDocGetRootElement(rec_res);
1691 while (ptr && ptr->type != XML_ELEMENT_NODE)
1694 xmlNewChild(ptr, 0, BAD_CAST "metadata", 0);
1695 xmlNewProp(c, BAD_CAST "type", BAD_CAST
1697 xmlNode * t = xmlNewText(BAD_CAST res.c_str());
1701 // second stage XSLT - common
1702 if (rec_res && m_p->record_xsp &&
1703 enable_record_transform)
1705 xmlDoc *tmp_doc = rec_res;
1707 xsp = m_p->record_xsp;
1708 rec_res = xsltApplyStylesheet(xsp, tmp_doc,
1710 xmlFreeDoc(tmp_doc);
1712 // get result out of it
1715 xsltSaveResultToString(&xmlrec_buf, &rec_len,
1717 rec_buf = (const char *) xmlrec_buf;
1718 package.log_write(rec_buf, rec_len);
1720 xmlFreeDoc(rec_res);
1724 std::string addinfo;
1726 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1728 addinfo = "xslt apply failed for "
1729 + b->sptr->transform_xsl_fname;
1730 log_diagnostic(package, error, addinfo.c_str());
1731 npr = zget_surrogateDiagRec(
1732 odr, odr_database, error, addinfo.c_str());
1734 xmlFreeDoc(rec_doc);
1741 npr = zget_surrogateDiagRec(
1743 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1747 npr = (Z_NamePlusRecord *)
1748 odr_malloc(odr, sizeof(*npr));
1749 npr->databaseName = odr_database;
1750 npr->which = Z_NamePlusRecord_databaseRecord;
1751 npr->u.databaseRecord =
1752 z_ext_record_xml(odr, rec_buf, rec_len);
1756 xmlFree(xmlrec_buf);
1761 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
1764 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
1765 npr->databaseName = odr_database;
1766 npr->which = Z_NamePlusRecord_databaseRecord;
1767 npr->u.databaseRecord = ext;
1771 npr = zget_surrogateDiagRec(
1773 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
1774 "ZOOM_record, type ext");
1777 npl->records[i] = npr;
1779 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
1780 records->which = Z_Records_DBOSD;
1781 records->u.databaseOrSurDiagnostics = npl;
1786 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
1789 struct cql_node *r = 0;
1797 std::map<std::string,std::string>::const_iterator it;
1798 it = fieldmap.find(cn->u.st.index);
1799 if (it == fieldmap.end())
1801 if (it->second.length())
1802 cn->u.st.index = odr_strdup(odr, it->second.c_str());
1808 r = convert_cql_fields(cn->u.boolean.left, odr);
1810 r = convert_cql_fields(cn->u.boolean.right, odr);
1813 r = convert_cql_fields(cn->u.sort.search, odr);
1819 void yf::Zoom::Frontend::log_diagnostic(mp::Package &package,
1820 int error, const char *addinfo)
1822 const char *err_msg = yaz_diag_bib1_str(error);
1824 package.log("zoom", YLOG_WARN, "Diagnostic %d %s: %s",
1825 error, err_msg, addinfo);
1827 package.log("zoom", YLOG_WARN, "Diagnostic %d %s:",
1831 yf::Zoom::BackendPtr yf::Zoom::Frontend::explain_search(mp::Package &package,
1832 std::string &database,
1836 std::string torus_url,
1837 std::string &torus_db,
1842 BackendPtr b(new Backend);
1844 b->m_frontend_database = database;
1845 b->enable_explain = true;
1847 Z_GDU *gdu = package.request().get();
1848 Z_APDU *apdu_req = gdu->u.z3950;
1849 Z_SearchRequest *sr = apdu_req->u.searchRequest;
1850 Z_Query *query = sr->query;
1852 if (!m_p->explain_xsp)
1854 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1856 odr_strdup(odr, "IR-Explain---1 unsupported. "
1857 "Torus explain_xsl not defined");
1860 else if (query->which == Z_Query_type_104 &&
1861 query->u.type_104->which == Z_External_CQL)
1863 std::string torus_query(query->u.type_104->u.cql);
1864 xmlDoc *doc = mp::get_searchable(package, torus_url, "",
1867 if (m_p->explain_xsp)
1869 xmlDoc *rec_res = xsltApplyStylesheet(m_p->explain_xsp, doc, 0);
1876 *error = YAZ_BIB1_UNSPECIFIED_ERROR;
1877 *addinfo = odr_strdup(odr, "Torus server unavailable or "
1878 "incorrectly configured");
1882 xmlNode *ptr = xmlDocGetRootElement(doc);
1885 xml_node_search(ptr, &hits, 0);
1887 Z_APDU *apdu_res = odr.create_searchResponse(apdu_req, 0, 0);
1888 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1889 package.response() = apdu_res;
1893 xmlFreeDoc(b->explain_doc);
1894 b->explain_doc = doc;
1899 *error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
1900 *addinfo = odr_strdup(odr, "IR-Explain---1 only supports CQL");
1905 static bool wait_conn(COMSTACK cs, int secs)
1907 struct yaz_poll_fd pfd;
1909 yaz_poll_add(pfd.input_mask, yaz_poll_except);
1910 if (cs->io_pending && CS_WANT_WRITE)
1911 yaz_poll_add(pfd.input_mask, yaz_poll_write);
1912 if (cs->io_pending & CS_WANT_READ)
1913 yaz_poll_add(pfd.input_mask, yaz_poll_read);
1915 pfd.fd = cs_fileno(cs);
1916 pfd.client_data = 0;
1918 int ret = yaz_poll(&pfd, 1, secs, 0);
1922 bool yf::Zoom::Impl::check_proxy(const char *proxy)
1925 const char *uri = "http://localhost/";
1928 bool outcome = false;
1929 conn = cs_create_host_proxy(uri, 0, &add, proxy);
1934 Z_GDU *gdu = z_get_HTTP_Request_uri(odr, uri, 0, 1);
1935 gdu->u.HTTP_Request->method = odr_strdup(odr, "GET");
1937 if (z_GDU(odr, &gdu, 0, 0))
1940 char *buf = odr_getbuf(odr, &len, 0);
1942 int ret = cs_connect(conn, add);
1943 if (ret > 0 || (ret == 0 && wait_conn(conn, 1)))
1947 ret = cs_put(conn, buf, len);
1950 if (!wait_conn(conn, proxy_timeout))
1961 bool yf::Zoom::Frontend::retry(mp::Package &package,
1964 int &error, char **addinfo,
1965 int &proxy_step, int &same_retries,
1968 if (b && b->m_proxy.length() && !m_p->check_proxy(b->m_proxy.c_str()))
1970 log_diagnostic(package, error, *addinfo);
1971 package.log("zoom", YLOG_LOG, "proxy %s fails", b->m_proxy.c_str());
1973 if (proxy_step) // there is a failover
1976 package.log("zoom", YLOG_WARN, "search failed: trying next proxy");
1979 error = YAZ_BIB1_PROXY_FAILURE;
1980 *addinfo = odr_strdup(odr, b->m_proxy.c_str());
1982 else if (same_retries == 0 && proxy_retries == 0)
1984 log_diagnostic(package, error, *addinfo);
1986 package.log("zoom", YLOG_WARN, "search failed: retry");
1994 void yf::Zoom::Frontend::handle_search(mp::Package &package)
1996 Z_GDU *gdu = package.request().get();
1997 Z_APDU *apdu_req = gdu->u.z3950;
1998 Z_APDU *apdu_res = 0;
2000 Z_SearchRequest *sr = apdu_req->u.searchRequest;
2001 if (sr->num_databaseNames != 1)
2003 int error = YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED;
2004 log_diagnostic(package, error, 0);
2005 apdu_res = odr.create_searchResponse(apdu_req, error, 0);
2006 package.response() = apdu_res;
2010 int same_retries = 0;
2011 int proxy_retries = 0;
2017 std::string db(sr->databaseNames[0]);
2019 BackendPtr b = get_backend_from_databases(package, db, &error,
2020 &addinfo, odr, &proxy_step);
2023 if (retry(package, odr, b, error, &addinfo, proxy_step,
2024 same_retries, proxy_retries))
2029 log_diagnostic(package, error, addinfo);
2030 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2031 package.response() = apdu_res;
2034 if (!b || b->enable_explain)
2037 b->set_option("setname", "default");
2039 bool enable_pz2_retrieval = false;
2040 bool enable_pz2_transform = false;
2041 bool enable_record_transform = false;
2042 bool assume_marc8_charset = false;
2043 prepare_elements(b, sr->preferredRecordSyntax, 0 /*element_set_name */,
2044 enable_pz2_retrieval,
2045 enable_pz2_transform,
2046 enable_record_transform,
2047 assume_marc8_charset);
2050 Z_Query *query = sr->query;
2051 mp::wrbuf ccl_wrbuf;
2052 mp::wrbuf pqf_wrbuf;
2053 std::string sortkeys;
2055 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
2058 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
2060 else if (query->which == Z_Query_type_2)
2063 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
2064 query->u.type_2->len);
2066 else if (query->which == Z_Query_type_104 &&
2067 query->u.type_104->which == Z_External_CQL)
2070 const char *cql = query->u.type_104->u.cql;
2071 CQL_parser cp = cql_parser_create();
2072 int r = cql_parser_string(cp, cql);
2073 package.log("zoom", YLOG_LOG, "CQL: %s", cql);
2076 cql_parser_destroy(cp);
2077 error = YAZ_BIB1_MALFORMED_QUERY;
2078 const char *addinfo = "CQL syntax error";
2079 log_diagnostic(package, error, addinfo);
2081 odr.create_searchResponse(apdu_req, error, addinfo);
2082 package.response() = apdu_res;
2085 struct cql_node *cn = cql_parser_result(cp);
2086 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
2089 // hopefully we are getting a ptr to a index+relation+term node
2090 error = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
2092 if (cn_error->which == CQL_NODE_ST)
2093 addinfo = cn_error->u.st.index;
2095 log_diagnostic(package, error, addinfo);
2096 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2097 package.response() = apdu_res;
2098 cql_parser_destroy(cp);
2101 r = cql_to_ccl(cn, wrbuf_vp_puts, ccl_wrbuf);
2104 error = YAZ_BIB1_MALFORMED_QUERY;
2105 const char *addinfo = "CQL to CCL conversion error";
2107 log_diagnostic(package, error, addinfo);
2108 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2109 package.response() = apdu_res;
2110 cql_parser_destroy(cp);
2114 mp::wrbuf sru_sortkeys_wrbuf;
2115 if (cql_sortby_to_sortkeys(cn, wrbuf_vp_puts, sru_sortkeys_wrbuf))
2117 error = YAZ_BIB1_ILLEGAL_SORT_RELATION;
2118 const char *addinfo = "CQL to CCL sortby conversion";
2120 log_diagnostic(package, error, addinfo);
2121 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2122 package.response() = apdu_res;
2123 cql_parser_destroy(cp);
2126 mp::wrbuf sort_spec_wrbuf;
2127 yaz_srw_sortkeys_to_sort_spec(wrbuf_cstr(sru_sortkeys_wrbuf),
2129 yaz_tok_cfg_t tc = yaz_tok_cfg_create();
2130 yaz_tok_parse_t tp =
2131 yaz_tok_parse_buf(tc, wrbuf_cstr(sort_spec_wrbuf));
2132 yaz_tok_cfg_destroy(tc);
2134 /* go through sortspec and map fields */
2135 int token = yaz_tok_move(tp);
2136 while (token != YAZ_TOK_EOF)
2138 if (token == YAZ_TOK_STRING)
2140 const char *field = yaz_tok_parse_string(tp);
2141 std::map<std::string,std::string>::iterator it;
2142 it = b->sptr->sortmap.find(field);
2143 if (it != b->sptr->sortmap.end())
2144 sortkeys += it->second;
2149 token = yaz_tok_move(tp);
2150 if (token == YAZ_TOK_STRING)
2152 sortkeys += yaz_tok_parse_string(tp);
2154 if (token != YAZ_TOK_EOF)
2157 token = yaz_tok_move(tp);
2160 yaz_tok_parse_destroy(tp);
2161 cql_parser_destroy(cp);
2165 error = YAZ_BIB1_QUERY_TYPE_UNSUPP;
2166 const char *addinfo = 0;
2167 log_diagnostic(package, error, addinfo);
2168 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2169 package.response() = apdu_res;
2173 if (ccl_wrbuf.len())
2176 assert(pqf_wrbuf.len() == 0);
2178 struct ccl_rpn_node *cn;
2179 package.log("zoom", YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
2180 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
2184 char *addinfo = odr_strdup_null(odr, ccl_err_msg(cerror));
2185 error = YAZ_BIB1_MALFORMED_QUERY;
2189 case CCL_ERR_UNKNOWN_QUAL:
2190 case CCL_ERR_TRUNC_NOT_LEFT:
2191 case CCL_ERR_TRUNC_NOT_RIGHT:
2192 case CCL_ERR_TRUNC_NOT_BOTH:
2193 #ifdef CCL_ERR_TRUNC_NOT_EMBED
2194 case CCL_ERR_TRUNC_NOT_EMBED:
2196 #ifdef CCL_ERR_TRUNC_NOT_SINGLE
2197 case CCL_ERR_TRUNC_NOT_SINGLE:
2199 error = YAZ_BIB1_UNSUPP_SEARCH;
2202 log_diagnostic(package, error, addinfo);
2203 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2204 package.response() = apdu_res;
2207 ccl_pquery(pqf_wrbuf, cn);
2208 package.log("zoom", YLOG_LOG, "RPN: %s", wrbuf_cstr(pqf_wrbuf));
2212 assert(pqf_wrbuf.len());
2214 ZOOM_query q = ZOOM_query_create();
2215 ZOOM_query_sortby2(q, b->sptr->sortStrategy.c_str(), sortkeys.c_str());
2217 if (b->get_option("sru"))
2221 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
2224 if (!strcmp(b->get_option("sru"), "solr"))
2226 solr_transform_t cqlt = solr_transform_create();
2228 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
2230 solr_transform_close(cqlt);
2234 status = cql_transform_rpn2cql_wrbuf(b->cqlt, wrb, zquery);
2238 ZOOM_query_cql(q, wrbuf_cstr(wrb));
2239 package.log("zoom", YLOG_LOG, "CQL: %s", wrbuf_cstr(wrb));
2240 b->search(q, &hits, &error, &addinfo, odr);
2242 ZOOM_query_destroy(q);
2246 error = YAZ_BIB1_MALFORMED_QUERY;
2247 const char *addinfo = "can not convert from RPN to CQL/SOLR";
2248 log_diagnostic(package, error, addinfo);
2249 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2250 package.response() = apdu_res;
2256 ZOOM_query_prefix(q, wrbuf_cstr(pqf_wrbuf));
2257 package.log("zoom", YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
2258 b->search(q, &hits, &error, &addinfo, odr);
2259 ZOOM_query_destroy(q);
2264 if (retry(package, odr, b, error, &addinfo, proxy_step,
2265 same_retries, proxy_retries))
2269 const char *element_set_name = 0;
2270 Odr_int number_to_present = 0;
2272 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
2274 Odr_int number_of_records_returned = 0;
2275 Z_Records *records = get_records(
2277 0, number_to_present, &error, &addinfo,
2278 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
2281 log_diagnostic(package, error, addinfo);
2282 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
2285 apdu_res->u.searchResponse->records = records;
2286 apdu_res->u.searchResponse->numberOfRecordsReturned =
2287 odr_intdup(odr, number_of_records_returned);
2289 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
2290 package.response() = apdu_res;
2293 void yf::Zoom::Frontend::handle_present(mp::Package &package)
2295 Z_GDU *gdu = package.request().get();
2296 Z_APDU *apdu_req = gdu->u.z3950;
2297 Z_APDU *apdu_res = 0;
2298 Z_PresentRequest *pr = apdu_req->u.presentRequest;
2303 package.response() = odr.create_presentResponse(
2304 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
2307 const char *element_set_name = 0;
2308 Z_RecordComposition *comp = pr->recordComposition;
2309 if (comp && comp->which != Z_RecordComp_simple)
2311 package.response() = odr.create_presentResponse(
2313 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
2316 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
2317 element_set_name = comp->u.simple->u.generic;
2318 Odr_int number_of_records_returned = 0;
2322 if (m_backend->enable_explain)
2324 Z_Records *records =
2325 get_explain_records(
2327 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
2328 &error, &addinfo, &number_of_records_returned, odr, m_backend,
2329 pr->preferredRecordSyntax, element_set_name);
2331 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
2334 apdu_res->u.presentResponse->records = records;
2335 apdu_res->u.presentResponse->numberOfRecordsReturned =
2336 odr_intdup(odr, number_of_records_returned);
2338 package.response() = apdu_res;
2342 Z_Records *records =
2343 get_records(package,
2344 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
2345 &error, &addinfo, &number_of_records_returned, odr, m_backend,
2346 pr->preferredRecordSyntax, element_set_name);
2348 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
2351 apdu_res->u.presentResponse->records = records;
2352 apdu_res->u.presentResponse->numberOfRecordsReturned =
2353 odr_intdup(odr, number_of_records_returned);
2355 package.response() = apdu_res;
2359 void yf::Zoom::Frontend::handle_package(mp::Package &package)
2361 Z_GDU *gdu = package.request().get();
2364 else if (gdu->which == Z_GDU_Z3950)
2366 Z_APDU *apdu_req = gdu->u.z3950;
2369 wrbuf_rewind(m_backend->m_apdu_wrbuf);
2370 if (apdu_req->which == Z_APDU_initRequest)
2373 package.response() = odr.create_close(
2375 Z_Close_protocolError,
2378 else if (apdu_req->which == Z_APDU_searchRequest)
2380 handle_search(package);
2382 else if (apdu_req->which == Z_APDU_presentRequest)
2384 handle_present(package);
2389 package.response() = odr.create_close(
2391 Z_Close_protocolError,
2392 "zoom filter cannot handle this APDU");
2393 package.session().close();
2397 WRBUF w = m_backend->m_apdu_wrbuf;
2398 package.log_write(wrbuf_buf(w), wrbuf_len(w));
2403 package.session().close();
2407 void yf::Zoom::Impl::process(mp::Package &package)
2409 FrontendPtr f = get_frontend(package);
2410 Z_GDU *gdu = package.request().get();
2412 if (f->m_is_virtual)
2414 f->handle_package(package);
2416 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
2419 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
2420 f->m_init_gdu = gdu;
2423 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
2424 Z_InitResponse *resp = apdu->u.initResponse;
2427 static const int masks[] = {
2432 for (i = 0; masks[i] != -1; i++)
2433 if (ODR_MASK_GET(req->options, masks[i]))
2434 ODR_MASK_SET(resp->options, masks[i]);
2436 static const int versions[] = {
2437 Z_ProtocolVersion_1,
2438 Z_ProtocolVersion_2,
2439 Z_ProtocolVersion_3,
2442 for (i = 0; versions[i] != -1; i++)
2443 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
2444 ODR_MASK_SET(resp->protocolVersion, versions[i]);
2448 *resp->preferredMessageSize = *req->preferredMessageSize;
2449 *resp->maximumRecordSize = *req->maximumRecordSize;
2451 package.response() = apdu;
2452 f->m_is_virtual = true;
2457 release_frontend(package);
2461 static mp::filter::Base* filter_creator()
2463 return new mp::filter::Zoom;
2467 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
2478 * c-file-style: "Stroustrup"
2479 * indent-tabs-mode: nil
2481 * vim: shiftwidth=4 tabstop=8 expandtab