X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Ffilter_sru_to_z3950.cpp;h=fa375d9d3489915e5524108809d8b0a1eb68e0a8;hb=c346e86f9e0b0414757f89aba11f7b37e3b12ac2;hp=7b18b7103534a8a0e4b614f19e3a8c2e96b1b4ae;hpb=906f801872cbbd268c7802219d8dcd191392090c;p=metaproxy-moved-to-github.git

diff --git a/src/filter_sru_to_z3950.cpp b/src/filter_sru_to_z3950.cpp
index 7b18b71..fa375d9 100644
--- a/src/filter_sru_to_z3950.cpp
+++ b/src/filter_sru_to_z3950.cpp
@@ -1,84 +1,132 @@
-/* $Id: filter_sru_to_z3950.cpp,v 1.5 2006-09-14 20:29:50 marc Exp $
-   Copyright (c) 2005-2006, Index Data.
+/* This file is part of Metaproxy.
+   Copyright (C) Index Data
 
-   See the LICENSE file for details
- */
+Metaproxy is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+// make std::min actually work on Windows
+#define NOMINMAX 1
 
 #include "config.hpp"
-#include "filter.hpp"
-#include "package.hpp"
-#include "util.hpp"
+#include <metaproxy/package.hpp>
+#include <metaproxy/util.hpp>
+#include "gduutil.hpp"
+#include "sru_util.hpp"
 #include "filter_sru_to_z3950.hpp"
 
-#include <yaz/zgdu.h>
 #include <yaz/srw.h>
+#include <yaz/pquery.h>
+#include <yaz/oid_db.h>
+#include <yaz/log.h>
+#include <yaz/otherinfo.h>
+#if YAZ_VERSIONL >= 0x50000
+#include <yaz/facet.h>
+#endif
 
 #include <boost/thread/mutex.hpp>
+#include <boost/thread/condition.hpp>
 
 #include <iostream>
 #include <sstream>
 #include <string>
-
+#include <map>
 
 namespace mp = metaproxy_1;
+namespace mp_util = metaproxy_1::util;
 namespace yf = mp::filter;
 
-namespace metaproxy_1 
-{
-
-    template<typename T>
-    std::string to_string(const T& t)
-    {
-        std::ostringstream o;
-        if(o << t)
-            return o.str();
-        
-        return std::string();
-    }
-
-    std::string http_header_value(const Z_HTTP_Header* header, 
-                                  const std::string name)
-    {
-        while (header && header->name
-               && std::string(header->name) !=  name)
-            header = header->next;
-        
-        if (header && header->name && std::string(header->name) == name
-            && header->value)
-            return std::string(header->value);
-
-        return std::string();
-    }
-    
-
-}
-
-
 namespace metaproxy_1 {
     namespace filter {
-        class SRUtoZ3950::Rep {
-            //friend class SRUtoZ3950;
+        class SRUtoZ3950::Frontend : boost::noncopyable {
+            friend class Impl;
+            bool m_in_use;
+        public:
+            Frontend();
+            ~Frontend();
+        };
+        class SRUtoZ3950::Impl {
         public:
             void configure(const xmlNode *xmlnode);
-            void process(metaproxy_1::Package &package) const;
+            void process(metaproxy_1::Package &package);
         private:
-            std::string sru_protocol(const Z_HTTP_Request &http_req) const;
-            std::string debug_http(const Z_HTTP_Request &http_req) const;
-            void http_response(mp::Package &package, 
-                               const std::string &content, 
-                               int http_code = 200) const;
-            bool build_sru_debug_package(mp::Package &package) const;
-            bool z3950_init_request(mp::Package &package, 
-                                         const std::string 
-                                         &database = "Default") const;
+            FrontendPtr get_frontend(mp::Package &package);
+            void release_frontend(mp::Package &package);
+            std::map<std::string, const xmlNode *> m_database_explain;
+            std::string default_stylesheet;
+
+            typedef std::map<std::string, int> ActiveUrlMap;
+
+            boost::mutex m_url_mutex;
+            boost::condition m_cond_url_ready;
+            ActiveUrlMap m_active_urls;
+
+
+            boost::mutex m_mutex_session;
+            boost::condition m_cond_session_ready;
+            std::map<mp::Session, FrontendPtr> m_clients;
+        private:
+            void sru(metaproxy_1::Package &package, Z_GDU *zgdu_req);
+            int z3950_build_query(
+                mp::odr &odr_en, Z_Query *z_query,
+                const Z_SRW_searchRetrieveRequest *req
+                ) const;
+
+            bool z3950_init_request(
+                mp::Package &package,
+                mp::odr &odr_en,
+                std::string zurl,
+                Z_SRW_PDU *sru_pdu_res,
+                const Z_SRW_PDU *sru_pdu_req
+                ) const;
+
             bool z3950_close_request(mp::Package &package) const;
-            bool z3950_search_request(mp::Package &package) const;
-            bool z3950_scan_request(mp::Package &package) const;
+
+            bool z3950_search_request(
+                mp::Package &package,
+                mp::Package &z3950_package,
+                mp::odr &odr_en,
+                Z_SRW_PDU *sru_pdu_res,
+                Z_SRW_searchRetrieveRequest const *sr_req,
+                std::string zurl,
+                std::string db_append
+                ) const;
+
+            bool z3950_present_request(
+                mp::Package &package,
+                mp::odr &odr_en,
+                Z_SRW_PDU *sru_pdu_res,
+                Z_SRW_searchRetrieveRequest const *sr_req
+                ) const;
+
+            bool z3950_to_srw_diagnostics_ok(
+                mp::odr &odr_en,
+                Z_SRW_searchRetrieveResponse *srw_res,
+                Z_Records *records
+                ) const;
+
+            int z3950_to_srw_diag(
+                mp::odr &odr_en,
+                Z_SRW_searchRetrieveResponse *srw_res,
+                Z_DefaultDiagFormat *ddf
+                ) const;
+
         };
     }
 }
 
-yf::SRUtoZ3950::SRUtoZ3950() : m_p(new Rep)
+yf::SRUtoZ3950::SRUtoZ3950() : m_p(new Impl)
 {
 }
 
@@ -86,7 +134,8 @@ yf::SRUtoZ3950::~SRUtoZ3950()
 {  // must have a destructor because of boost::scoped_ptr
 }
 
-void yf::SRUtoZ3950::configure(const xmlNode *xmlnode)
+void yf::SRUtoZ3950::configure(const xmlNode *xmlnode, bool test_only,
+                               const char *path)
 {
     m_p->configure(xmlnode);
 }
@@ -96,326 +145,885 @@ void yf::SRUtoZ3950::process(mp::Package &package) const
     m_p->process(package);
 }
 
-void yf::SRUtoZ3950::Rep::configure(const xmlNode *xmlnode)
+void yf::SRUtoZ3950::Impl::configure(const xmlNode *confignode)
 {
-}
+    const xmlNode * dbnode;
 
-void yf::SRUtoZ3950::Rep::process(mp::Package &package) const
-{
-    Z_GDU *zgdu_req = package.request().get();
-
-    // ignoring all non HTTP_Request packages
-    if (!zgdu_req || !(zgdu_req->which == Z_GDU_HTTP_Request)){
-        package.move();
-        return;
+    for (dbnode = confignode->children; dbnode; dbnode = dbnode->next)
+    {
+        if (dbnode->type != XML_ELEMENT_NODE)
+            continue;
+
+        if (!strcmp((const char *) dbnode->name, "database"))
+        {
+            std::string database;
+
+            for (struct _xmlAttr *attr = dbnode->properties;
+                 attr; attr = attr->next)
+            {
+                mp::xml::check_attribute(attr, "", "name");
+                database = mp::xml::get_text(attr);
+
+                const xmlNode *explainnode;
+                for (explainnode = dbnode->children;
+                     explainnode; explainnode = explainnode->next)
+                {
+                    if (explainnode->type == XML_ELEMENT_NODE)
+                    {
+                        m_database_explain.insert(
+                            std::make_pair(database, explainnode));
+                        break;
+                    }
+                }
+            }
+        }
+        else if (!strcmp((const char *) dbnode->name, "stylesheet"))
+        {
+            default_stylesheet = mp::xml::get_text(dbnode);
+        }
+        else
+        {
+            throw mp::filter::FilterException
+                ("Bad element "
+                 + std::string((const char *) dbnode->name)
+                 + " in sru_z3950"
+                    );
+        }
     }
-    
-    // only working on  HTTP_Request packages now
-
-    z3950_init_request(package);
-    //z3950_search_request(package);
-    //z3950_scan_request(package);
-    z3950_close_request(package);
-
+}
 
-    // TODO: Z3950 response parsing and translation to SRU package
-    Z_HTTP_Request* http_req =  zgdu_req->u.HTTP_Request;
+void yf::SRUtoZ3950::Impl::sru(mp::Package &package, Z_GDU *zgdu_req)
+{
+    bool ok = true;
 
-    
-    build_sru_debug_package(package);
-    return;
+    mp::odr odr_de(ODR_DECODE);
+    Z_SRW_PDU *sru_pdu_req = 0;
 
+    mp::odr odr_en(ODR_ENCODE);
+    Z_SRW_PDU *sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
 
+    // determine database with the HTTP header information only
+    mp_util::SRUServerInfo sruinfo = mp_util::get_sru_server_info(package);
+    std::map<std::string, const xmlNode *>::iterator idbexp;
+    idbexp = m_database_explain.find(sruinfo.database);
 
+    // assign explain config XML DOM node if database is known
+    const xmlNode *explainnode = 0;
+    if (idbexp != m_database_explain.end())
+    {
+        explainnode = idbexp->second;
+    }
 
+    // decode SRU request
+    Z_SOAP *soap = 0;
+    char *charset = 0;
+    const char *stylesheet = 0;
 
+    // filter acts as sink for non-valid SRU requests
+    if (! (sru_pdu_req = mp_util::decode_sru_request(package, odr_de, odr_en,
+                                                     sru_pdu_res, &soap,
+                                                     charset)))
+    {
+        if (soap)
+        {
+            mp_util::build_sru_explain(package, odr_en, sru_pdu_res,
+                                       sruinfo, explainnode);
+            mp_util::build_sru_response(package, odr_en, soap,
+                                        sru_pdu_res, charset, stylesheet);
+        }
+        else
+        {
+            metaproxy_1::odr odr;
+            Z_GDU *zgdu_res =
+                odr.create_HTTP_Response(package.session(),
+                                         zgdu_req->u.HTTP_Request, 400);
+            package.response() = zgdu_res;
+        }
+        return;
+    }
 
+    bool enable_package_log = false;
+    std::string zurl;
+    std::string dbargs;
+    Z_SRW_extra_arg *arg;
+
+    for ( arg = sru_pdu_req->extra_args; arg; arg = arg->next)
+        if (!strcmp(arg->name, "x-target"))
+        {
+            zurl = std::string(arg->value);
+        }
+        else if (!strcmp(arg->name, "x-max-sockets"))
+        {
+            package.origin().set_max_sockets(atoi(arg->value));
+        }
+        else if (!strcmp(arg->name, "x-session-id"))
+        {
+            package.origin().set_custom_session(arg->value);
+        }
+        else if (!strcmp(arg->name, "x-log-enable"))
+        {
+            if (*arg->value == '1')
+            {
+                enable_package_log = true;
+                package.log_enable();
+            }
+        }
+        else if (!strncmp(arg->name, "x-client-", 9) && arg->value)
+        {
+            if (dbargs.length())
+                dbargs += '&';
+            dbargs += mp_util::uri_encode(arg->name + 9);
+            dbargs += '=';
+            dbargs += mp_util::uri_encode(arg->value);
+        }
+
+    assert(sru_pdu_req);
 
+    Package z3950_package(package.session(), package.origin());
+    z3950_package.copy_filter(package);
 
-    // SRU request package checking
- 
+    // filter acts as sink for SRU explain requests
+    if (sru_pdu_req->which == Z_SRW_explain_request)
+    {
+        Z_SRW_explainRequest *er_req = sru_pdu_req->u.explain_request;
+        stylesheet = er_req->stylesheet;
 
-    Z_GDU *zgdu_res = 0; 
-    Z_SRW_PDU *sru_pdu_req = 0;
-    Z_SRW_PDU *sru_pdu_res = 0;
-    Z_APDU *z3950_apdu_req = 0;
-    Z_APDU *z3950_apdu_res = 0;
-    
+        mp_util::build_sru_explain(package, odr_en, sru_pdu_res,
+                                   sruinfo, explainnode, er_req);
+    }
+    else if (sru_pdu_req->which == Z_SRW_searchRetrieve_request
+             && sru_pdu_req->u.request)
+    {   // searchRetrieve
+        Z_SRW_searchRetrieveRequest *sr_req = sru_pdu_req->u.request;
+        stylesheet = sr_req->stylesheet;
+
+        sru_pdu_res = yaz_srw_get_pdu(odr_en, Z_SRW_searchRetrieve_response,
+                                      sru_pdu_req->srw_version);
+
+        // checking that we have a query
+        ok = mp_util::check_sru_query_exists(package, odr_en,
+                                             sru_pdu_res, sr_req);
+
+        if (ok && z3950_init_request(package, odr_en,
+                                     zurl, sru_pdu_res, sru_pdu_req))
+        {
+            ok = z3950_search_request(package, z3950_package, odr_en,
+                                      sru_pdu_res, sr_req, zurl, dbargs);
+
+            if (ok
+                && sru_pdu_res->u.response->numberOfRecords
+                && *(sru_pdu_res->u.response->numberOfRecords))
+
+                ok = z3950_present_request(package, odr_en,
+                                           sru_pdu_res,
+                                           sr_req);
+            z3950_close_request(package);
+        }
+    }
 
-    Z_SOAP *soap_req = 0;
-    char *charset = 0;
-    Z_SRW_diagnostic *diag = 0;
-    int num_diags = 0;
-    //mp::odr odr_de(ODR_DECODE);
-    
-    if (0 == yaz_sru_decode(http_req, &sru_pdu_req, &soap_req, 
-                            odr(ODR_DECODE), &charset, &diag, &num_diags))
+    // scan
+    else if (sru_pdu_req->which == Z_SRW_scan_request
+             && sru_pdu_req->u.scan_request)
     {
-        std::cout << "SRU GET/POST \n";
+        sru_pdu_res = yaz_srw_get_pdu(odr_en, Z_SRW_scan_response,
+                                      sru_pdu_req->srw_version);
+        stylesheet = sru_pdu_req->u.scan_request->stylesheet;
+
+        // we do not do scan at the moment, therefore issuing a diagnostic
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.scan_response->diagnostics),
+                               &(sru_pdu_res->u.scan_response->num_diagnostics),
+                               YAZ_SRW_UNSUPP_OPERATION, "scan");
     }
-    else if (0 == yaz_srw_decode(http_req, &sru_pdu_req, &soap_req, 
-                                 odr(ODR_DECODE), &charset))
-    {
-        std::cout << "SRU SOAP \n";
-    } 
-    else 
+    else
     {
-        std::cout << "SRU DECODING ERROR - SHOULD NEVER HAPPEN\n";
-        package.session().close();
-        return;
+        sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
+
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.explain_response->diagnostics),
+                               &(sru_pdu_res->u.explain_response->num_diagnostics),
+                               YAZ_SRW_UNSUPP_OPERATION, "unknown");
     }
 
-    if (num_diags)
+    if (enable_package_log)
     {
-        std::cout << "SRU DIAGNOSTICS " << num_diags << "\n";
-        // TODO: make nice diagnostic return package 
-        //Z_SRW_PDU *srw_pdu_res =
-        //            yaz_srw_get(odr(ODR_ENCODE),
-        //                        Z_SRW_searchRetrieve_response);
-        //        Z_SRW_searchRetrieveResponse *srw_res = srw_pdu_res->u.response;
-
-        //        srw_res->diagnostics = diagnostic;
-        //        srw_res->num_diagnostics = num_diagnostic;
-        //        send_srw_response(srw_pdu_res);
-        //        return;
-
-        // package.session().close();
-        return;
+        std::string l;
+        package.log_reset(l);
+        if (l.length())
+        {
+            mp::wrbuf w;
+
+            wrbuf_puts(w, "<log>\n");
+            wrbuf_xmlputs(w, l.c_str());
+            wrbuf_puts(w, "</log>");
+
+            sru_pdu_res->extraResponseData_len = w.len();
+            sru_pdu_res->extraResponseData_buf =
+                odr_strdup(odr_en, wrbuf_cstr(w));
+        }
     }
+    if (!stylesheet && default_stylesheet.length())
+        stylesheet = default_stylesheet.c_str();
 
-    
-    // SRU request package translation to Z3950 package
+    // build and send SRU response
+    mp_util::build_sru_response(package, odr_en, soap,
+                                sru_pdu_res, charset, stylesheet);
+}
 
-    // searchRetrieve
-    if (sru_pdu_req && sru_pdu_req->which == Z_SRW_searchRetrieve_request)
-    {
-        Z_SRW_searchRetrieveRequest *srw_req = sru_pdu_req->u.request;   
 
-        // recordXPath unsupported.
-        //if (srw_req->recordXPath)
-        //    yaz_add_srw_diagnostic(odr_decode(),
-        //                           &diag, &num_diags, 72, 0);
-        // sort unsupported
-        //    if (srw_req->sort_type != Z_SRW_sort_type_none)
-        //        yaz_add_srw_diagnostic(odr_decode(),
-        //                               &diag, &num_diags, 80, 0);
-    }
-    else
+yf::SRUtoZ3950::Frontend::Frontend() :  m_in_use(true)
+{
+}
+
+yf::SRUtoZ3950::Frontend::~Frontend()
+{
+}
+
+
+yf::SRUtoZ3950::FrontendPtr yf::SRUtoZ3950::Impl::get_frontend(
+    mp::Package &package)
+{
+    boost::mutex::scoped_lock lock(m_mutex_session);
+
+    std::map<mp::Session,yf::SRUtoZ3950::FrontendPtr>::iterator it;
+
+    while (true)
     {
-        std::cout << "SRU OPERATION NOT SUPPORTED \n";
-        // TODO: make nice diagnostic return package 
-        // package.session().close();
-        return;
+        it = m_clients.find(package.session());
+        if (it == m_clients.end())
+            break;
+
+        if (!it->second->m_in_use)
+        {
+            it->second->m_in_use = true;
+            return it->second;
+        }
+        m_cond_session_ready.wait(lock);
     }
+    FrontendPtr f(new Frontend);
+    m_clients[package.session()] = f;
+    f->m_in_use = true;
+    return f;
+}
 
+void yf::SRUtoZ3950::Impl::release_frontend(mp::Package &package)
+{
+    boost::mutex::scoped_lock lock(m_mutex_session);
+    std::map<mp::Session,FrontendPtr>::iterator it;
+
+    it = m_clients.find(package.session());
+    if (it != m_clients.end())
+    {
+        if (package.session().is_closed())
+        {
+            m_clients.erase(it);
+        }
+        else
+        {
+            it->second->m_in_use = false;
+        }
+        m_cond_session_ready.notify_all();
+    }
 }
 
-bool yf::SRUtoZ3950::Rep::build_sru_debug_package(mp::Package &package) const
+void yf::SRUtoZ3950::Impl::process(mp::Package &package)
 {
+    FrontendPtr f = get_frontend(package);
+
     Z_GDU *zgdu_req = package.request().get();
-    if  (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
-    {    
-        Z_HTTP_Request* http_req =  zgdu_req->u.HTTP_Request;
-        std::string content = debug_http(*http_req);
-        int http_code = 400;    
-        http_response(package, content, http_code);
-        return true;
+
+    if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
+    {
+        if (zgdu_req->u.HTTP_Request->content_len == 0)
+        {
+            const char *path = zgdu_req->u.HTTP_Request->path;
+            boost::mutex::scoped_lock lock(m_url_mutex);
+            while (1)
+            {
+                ActiveUrlMap::iterator it = m_active_urls.find(path);
+                if (it == m_active_urls.end())
+                {
+                    m_active_urls[path] = 1;
+                    break;
+                }
+                yaz_log(YLOG_LOG, "Waiting for %s to complete", path);
+                m_cond_url_ready.wait(lock);
+            }
+        }
+        sru(package, zgdu_req);
+        if (zgdu_req && zgdu_req->u.HTTP_Request->content_len == 0)
+        {
+            const char *path = zgdu_req->u.HTTP_Request->path;
+            boost::mutex::scoped_lock lock(m_url_mutex);
+
+            ActiveUrlMap::iterator it = m_active_urls.find(path);
+
+            m_active_urls.erase(it);
+            m_cond_url_ready.notify_all();
+        }
     }
-    return false;
+    else
+    {
+        package.move();
+    }
+    release_frontend(package);
 }
 
-
-bool 
-yf::SRUtoZ3950::Rep::z3950_init_request(mp::Package &package, 
-                                             const std::string &database) const
+bool
+yf::SRUtoZ3950::Impl::z3950_init_request(mp::Package &package,
+                                         mp::odr &odr_en,
+                                         std::string zurl,
+                                         Z_SRW_PDU *sru_pdu_res,
+                                         const Z_SRW_PDU *sru_pdu_req) const
 {
-    // prepare Z3950 package 
+    // prepare Z3950 package
     Package z3950_package(package.session(), package.origin());
     z3950_package.copy_filter(package);
 
     // set initRequest APDU
-    mp::odr odr_en(ODR_ENCODE);
     Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_initRequest);
-    //TODO: add database name in apdu
+    Z_InitRequest *init_req = apdu->u.initRequest;
+
+    Z_IdAuthentication *auth = NULL;
+    if (sru_pdu_req->username && !sru_pdu_req->password)
+    {
+        auth = (Z_IdAuthentication *) odr_malloc(odr_en, sizeof(Z_IdAuthentication));
+        auth->which = Z_IdAuthentication_open;
+        auth->u.open = odr_strdup(odr_en, sru_pdu_req->username);
+    }
+    else if (sru_pdu_req->username && sru_pdu_req->password)
+    {
+        auth = (Z_IdAuthentication *) odr_malloc(odr_en, sizeof(Z_IdAuthentication));
+        auth->which = Z_IdAuthentication_idPass;
+        auth->u.idPass = (Z_IdPass *) odr_malloc(odr_en, sizeof(Z_IdPass));
+        auth->u.idPass->groupId = NULL;
+        auth->u.idPass->password = odr_strdup(odr_en, sru_pdu_req->password);
+        auth->u.idPass->userId = odr_strdup(odr_en, sru_pdu_req->username);
+    }
+
+    init_req->idAuthentication = auth;
+
+    *init_req->preferredMessageSize = 10*1024*1024;
+    *init_req->maximumRecordSize = 10*1024*1024;
+
+    ODR_MASK_SET(init_req->options, Z_Options_search);
+    ODR_MASK_SET(init_req->options, Z_Options_present);
+    ODR_MASK_SET(init_req->options, Z_Options_namedResultSets);
+    ODR_MASK_SET(init_req->options, Z_Options_scan);
+
+    ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_1);
+    ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_2);
+    ODR_MASK_SET(init_req->protocolVersion, Z_ProtocolVersion_3);
+
+    if (zurl.length())
+    {
+        std::string host;
+        std::list<std::string> dblist;
+        mp_util::split_zurl(zurl, host, dblist);
+        mp_util::set_vhost_otherinfo(&init_req->otherInfo, odr_en, host, 1);
+    }
+
+    Z_GDU *zgdu_req = package.request().get();
+    if (zgdu_req->which == Z_GDU_HTTP_Request)
+    {
+        Z_HTTP_Request *hreq = zgdu_req->u.HTTP_Request;
+        const char *peer_name =
+            z_HTTP_header_lookup(hreq->headers, "X-Forwarded-For");
+        if (peer_name)
+        {
+            yaz_oi_set_string_oid(&init_req->otherInfo, odr_en,
+                                  yaz_oid_userinfo_client_ip, 1, peer_name);
+        }
+    }
+
     z3950_package.request() = apdu;
 
     // send Z3950 package
     z3950_package.move();
-    if (z3950_package.session().is_closed()){
-        package.session().close();
-        return false;
-    }
 
     // check successful initResponse
-    Z_GDU *gdu = package.response().get();
-    if (gdu && gdu->which == Z_GDU_Z3950 
-        && gdu->u.z3950->which == Z_APDU_initResponse)
-        return true;
+    Z_GDU *z3950_gdu = z3950_package.response().get();
 
+    int error = YAZ_SRW_SYSTEM_TEMPORARILY_UNAVAILABLE;
+    const char *addinfo = 0;
+    if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
+        && z3950_gdu->u.z3950->which == Z_APDU_initResponse)
+    {
+        Z_InitResponse *initrs = z3950_gdu->u.z3950->u.initResponse;
+        if (*initrs->result)
+            return true;
+        int no = 0;
+        while (1)
+        {
+            Z_DefaultDiagFormat *df = yaz_decode_init_diag(no, initrs);
+
+            if (!df)
+                break;
+            yaz_add_srw_diagnostic(odr_en,
+                                   &(sru_pdu_res->u.response->diagnostics),
+                                   &(sru_pdu_res->u.response->num_diagnostics),
+                                   yaz_diag_bib1_to_srw(*df->condition),
+                                   df->u.v2Addinfo);
+            no++;
+        }
+        if (no)
+            return false; // got least one diagnostic from init
+
+        // we just have result=false.
+        error = YAZ_SRW_AUTHENTICATION_ERROR;
+    }
+    else
+        addinfo = "sru_z3950: expected initResponse";
+    yaz_add_srw_diagnostic(odr_en,
+                           &(sru_pdu_res->u.response->diagnostics),
+                           &(sru_pdu_res->u.response->num_diagnostics),
+                           error, addinfo);
     return false;
 }
 
-bool 
-yf::SRUtoZ3950::Rep::z3950_close_request(mp::Package &package) const
+bool yf::SRUtoZ3950::Impl::z3950_close_request(mp::Package &package) const
 {
-    // prepare Z3950 package 
     Package z3950_package(package.session(), package.origin());
     z3950_package.copy_filter(package);
+    z3950_package.session().close();
 
-    // set initRequest APDU
-    mp::odr odr_en(ODR_ENCODE);
-    Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_close);
-    //TODO: add database name in apdu
-    z3950_package.request() = apdu;
-
-    // send Z3950 package
     z3950_package.move();
-    //if (z3950_package.session().is_closed()){
-    //    package.session().close();
-    //    return false;
-    //}
 
-    // check successful initResponse
-    Z_GDU *gdu = package.response().get();
-    if (gdu && gdu->which == Z_GDU_Z3950 
-        && gdu->u.z3950->which == Z_APDU_close)
+    if (z3950_package.session().is_closed())
+    {
         return true;
-
+    }
     return false;
 }
 
-bool 
-yf::SRUtoZ3950::Rep::z3950_search_request(mp::Package &package) const
+bool yf::SRUtoZ3950::Impl::z3950_search_request(mp::Package &package,
+                                                mp::Package &z3950_package,
+                                                mp::odr &odr_en,
+                                                Z_SRW_PDU *sru_pdu_res,
+                                                Z_SRW_searchRetrieveRequest
+                                                const *sr_req,
+                                                std::string zurl,
+                                                std::string dbappend) const
 {
-    Package z3950_package(package.session(), package.origin());
-    z3950_package.copy_filter(package); 
-    mp::odr odr_en(ODR_ENCODE);
+
+    assert(sru_pdu_res->u.response);
+
     Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_searchRequest);
-    //TODO: add stuff in apdu
+    Z_SearchRequest *z_searchRequest = apdu->u.searchRequest;
+
+    // RecordSyntax will always be XML
+    z_searchRequest->preferredRecordSyntax
+        = odr_oiddup(odr_en, yaz_oid_recsyn_xml);
+
+    if (!mp_util::set_databases_from_zurl(odr_en, zurl,
+                                          &z_searchRequest->num_databaseNames,
+                                          &z_searchRequest->databaseNames))
+    {
+        std::string db;
+
+        if (sr_req->database)
+            db = sr_req->database;
+        else
+            db = "Default";
+
+        if (dbappend.length())
+        {
+            db += ",";
+            db += dbappend;
+        }
+        z_searchRequest->num_databaseNames = 1;
+        z_searchRequest->databaseNames = (char**)
+            odr_malloc(odr_en, sizeof(char *));
+        z_searchRequest->databaseNames[0] = odr_strdup(odr_en, db.c_str());
+    }
+#if YAZ_VERSIONL >= 0x50000
+    // yaz_oi_set_facetlist not public in YAZ 4.2.66
+    if (sr_req->facetList)
+    {
+        Z_OtherInformation **oi = &z_searchRequest->additionalSearchInfo;
+        yaz_oi_set_facetlist(oi, odr_en, sr_req->facetList);
+    }
+#endif
 
+    Z_Query *z_query = (Z_Query *) odr_malloc(odr_en, sizeof(Z_Query));
+    z_searchRequest->query = z_query;
+
+    int sru_diagnostic = z3950_build_query(odr_en, z_query, sr_req);
+    if (sru_diagnostic)
+    {
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               sru_diagnostic,
+                               "query");
+        return false;
+    }
 
     z3950_package.request() = apdu;
+
     z3950_package.move();
-    //TODO: check success condition
+
+    Z_GDU *z3950_gdu = z3950_package.response().get();
+
+    if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950
+        || z3950_gdu->u.z3950->which != Z_APDU_searchResponse
+        || !z3950_gdu->u.z3950->u.searchResponse
+        || !z3950_gdu->u.z3950->u.searchResponse->searchStatus)
+    {
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               YAZ_SRW_SYSTEM_TEMPORARILY_UNAVAILABLE, 0);
+        return false;
+    }
+
+    Z_SearchResponse *sr = z3950_gdu->u.z3950->u.searchResponse;
+
+    if (!z3950_to_srw_diagnostics_ok(odr_en, sru_pdu_res->u.response,
+                                     sr->records))
+    {
+        return false;
+    }
+#if YAZ_VERSIONL >= 0x50000
+    Z_FacetList *fl = yaz_oi_get_facetlist(&sr->additionalSearchInfo);
+    if (!fl)
+        fl =  yaz_oi_get_facetlist(&sr->otherInfo);
+    sru_pdu_res->u.response->facetList = fl;
+#endif
+    sru_pdu_res->u.response->numberOfRecords
+        = odr_intdup(odr_en, *sr->resultCount);
     return true;
-    return false;
 }
 
-bool 
-yf::SRUtoZ3950::Rep::z3950_scan_request(mp::Package &package) const
+bool yf::SRUtoZ3950::Impl::z3950_present_request(
+    mp::Package &package,
+    mp::odr &odr_en,
+    Z_SRW_PDU *sru_pdu_res,
+    const Z_SRW_searchRetrieveRequest *sr_req)
+    const
 {
-    Package z3950_package(package.session(), package.origin());
-    z3950_package.copy_filter(package); 
-    mp::odr odr_en(ODR_ENCODE);
-    Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_scanRequest);
-    //TODO: add stuff in apdu
-    z3950_package.request() = apdu;
-    z3950_package.move();
-    //TODO: check success condition
+    assert(sru_pdu_res->u.response);
+    int start = 1;
+    int max_recs = 0;
+
+    if (!sr_req)
+        return false;
+
+    if (sr_req->maximumRecords)
+        max_recs = *sr_req->maximumRecords;
+    if (sr_req->startRecord)
+        start = *sr_req->startRecord;
+
+    // no need to work if nobody wants record ..
+    if (max_recs == 0)
+        return true;
+
+    bool send_z3950_present = true;
+
+    // recordXPath unsupported.
+    if (sr_req->recordXPath)
+    {
+        send_z3950_present = false;
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               YAZ_SRW_XPATH_RETRIEVAL_UNSUPP, 0);
+    }
+
+    // resultSetTTL unsupported.
+    // resultSetIdleTime in response
+    if (sr_req->resultSetTTL)
+    {
+        send_z3950_present = false;
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               YAZ_SRW_RESULT_SETS_UNSUPP, 0);
+    }
+
+    // sort unsupported
+    if (sr_req->sort_type != Z_SRW_sort_type_none)
+    {
+        send_z3950_present = false;
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               YAZ_SRW_SORT_UNSUPP, 0);
+    }
+
+    // start record requested negative, or larger than number of records
+    if (start < 0 || start > *sru_pdu_res->u.response->numberOfRecords)
+    {
+        send_z3950_present = false;
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               YAZ_SRW_FIRST_RECORD_POSITION_OUT_OF_RANGE, 0);
+    }
+
+    // maximumRecords requested negative
+    if (max_recs < 0)
+    {
+        send_z3950_present = false;
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics),
+                               &(sru_pdu_res->u.response->num_diagnostics),
+                               YAZ_SRW_UNSUPP_PARAMETER_VALUE,
+                               "maximumRecords");
+    }
+
+    // exit on all these above diagnostics
+    if (!send_z3950_present)
+        return false;
+
+    if (max_recs > *sru_pdu_res->u.response->numberOfRecords - start)
+        max_recs = *sru_pdu_res->u.response->numberOfRecords - start + 1;
+
+    Z_SRW_searchRetrieveResponse *sru_res = sru_pdu_res->u.response;
+    sru_res->records = (Z_SRW_record *)
+        odr_malloc(odr_en, max_recs * sizeof(Z_SRW_record));
+    int num = 0;
+    while (num < max_recs)
+    {
+        // now packaging the z3950 present request
+        Package z3950_package(package.session(), package.origin());
+        z3950_package.copy_filter(package);
+        Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_presentRequest);
+
+        assert(apdu->u.presentRequest);
+
+        *apdu->u.presentRequest->resultSetStartPoint = start + num;
+        *apdu->u.presentRequest->numberOfRecordsRequested = max_recs - num;
+
+        // set response packing to be same as "request" packing..
+        int record_packing = Z_SRW_recordPacking_XML;
+        if (sr_req->recordPacking && 's' == *(sr_req->recordPacking))
+            record_packing = Z_SRW_recordPacking_string;
+
+        // RecordSyntax will always be XML
+        apdu->u.presentRequest->preferredRecordSyntax
+            = odr_oiddup(odr_en, yaz_oid_recsyn_xml);
+
+        // z3950'fy record schema
+        if (sr_req->recordSchema)
+        {
+            apdu->u.presentRequest->recordComposition
+                = (Z_RecordComposition *)
+                odr_malloc(odr_en, sizeof(Z_RecordComposition));
+            apdu->u.presentRequest->recordComposition->which
+                = Z_RecordComp_simple;
+            apdu->u.presentRequest->recordComposition->u.simple
+                = mp_util::build_esn_from_schema(odr_en,
+                                                 (const char *)
+                                                 sr_req->recordSchema);
+        }
+
+        // attaching Z3950 package to filter chain
+        z3950_package.request() = apdu;
+
+        // sending Z30.50 present request
+        z3950_package.move();
+
+        //check successful Z3950 present response
+        Z_GDU *z3950_gdu = z3950_package.response().get();
+        if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950
+            || z3950_gdu->u.z3950->which != Z_APDU_presentResponse
+            || !z3950_gdu->u.z3950->u.presentResponse)
+
+        {
+            yaz_add_srw_diagnostic(odr_en,
+                                   &(sru_pdu_res->u.response->diagnostics),
+                                   &(sru_pdu_res->u.response->num_diagnostics),
+                                   YAZ_SRW_SYSTEM_TEMPORARILY_UNAVAILABLE, 0);
+            return false;
+        }
+        // everything fine, continuing
+
+        Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
+
+        // checking non surrogate diagnostics in Z3950 present response package
+        if (!z3950_to_srw_diagnostics_ok(odr_en, sru_pdu_res->u.response,
+                                         pr->records))
+            return false;
+
+        // if anything but database or surrogate diagnostics, stop
+        if (!pr->records || pr->records->which != Z_Records_DBOSD)
+            break;
+        else
+        {
+            // inserting all records
+            int returned_recs =
+                pr->records->u.databaseOrSurDiagnostics->num_records;
+            for (int i = 0; i < returned_recs; i++)
+            {
+                int position = i + *apdu->u.presentRequest->resultSetStartPoint;
+                Z_NamePlusRecord *npr
+                    = pr->records->u.databaseOrSurDiagnostics->records[i];
+
+                sru_res->records[i + num].recordPacking = record_packing;
+
+                if (npr->which == Z_NamePlusRecord_surrogateDiagnostic)
+                {
+                    Z_DiagRec *p = npr->u.surrogateDiagnostic;
+                    if (p->which == Z_DiagRec_defaultFormat)
+                    {
+                        Z_DefaultDiagFormat *df = p->u.defaultFormat;
+                        int c = yaz_diag_bib1_to_srw(*df->condition);
+
+                        yaz_mk_sru_surrogate(
+                            odr_en, sru_res->records + i + num, position,
+                            c, df->u.v2Addinfo);
+                    }
+                    else
+                    {
+                        yaz_mk_sru_surrogate(
+                            odr_en, sru_res->records + i + num, position,
+                            YAZ_SRW_RECORD_TEMPORARILY_UNAVAILABLE, 0);
+                    }
+                }
+                else if (npr->which == Z_NamePlusRecord_databaseRecord &&
+                    npr->u.databaseRecord->direct_reference
+                    && !oid_oidcmp(npr->u.databaseRecord->direct_reference,
+                                   yaz_oid_recsyn_xml))
+                {
+                    // got XML record back
+                    Z_External *r = npr->u.databaseRecord;
+                    sru_res->records[i + num].recordPosition =
+                        odr_intdup(odr_en, position);
+                    sru_res->records[i + num].recordSchema = sr_req->recordSchema;
+                    sru_res->records[i + num].recordData_buf
+                        = odr_strdupn(odr_en,
+                                      (const char *)r->u.octet_aligned->buf,
+                                      r->u.octet_aligned->len);
+                    sru_res->records[i + num].recordData_len
+                        = r->u.octet_aligned->len;
+                }
+                else
+                {
+                    // not XML or no database record at all
+                    yaz_mk_sru_surrogate(
+                        odr_en, sru_res->records + i + num, position,
+                        YAZ_SRW_RECORD_NOT_AVAILABLE_IN_THIS_SCHEMA, 0);
+                }
+            }
+            num += returned_recs;
+        }
+    }
+    sru_res->num_records = num;
+    if (start - 1 + num < *sru_pdu_res->u.response->numberOfRecords)
+        sru_res->nextRecordPosition =
+            odr_intdup(odr_en, start + num);
     return true;
-    return false;
 }
 
+int yf::SRUtoZ3950::Impl::z3950_build_query(
+    mp::odr &odr_en, Z_Query *z_query,
+    const Z_SRW_searchRetrieveRequest *req
+    ) const
+{
+    if (
+#ifdef Z_SRW_query_type_cql
+        req->query_type == Z_SRW_query_type_cql
+#else
+        !strcmp(req->queryType, "cql")
+#endif
+        )
+    {
+        Z_External *ext = (Z_External *)
+            odr_malloc(odr_en, sizeof(*ext));
+        ext->direct_reference =
+            odr_getoidbystr(odr_en, "1.2.840.10003.16.2");
+        ext->indirect_reference = 0;
+        ext->descriptor = 0;
+        ext->which = Z_External_CQL;
+        ext->u.cql = odr_strdup(odr_en,
+#ifdef Z_SRW_query_type_cql
+        req->query.cql
+#else
+        req->query
+#endif
+            );
+
+        z_query->which = Z_Query_type_104;
+        z_query->u.type_104 =  ext;
+        return 0;
+    }
+
+    if (
+#ifdef Z_SRW_query_type_pqf
+        req->query_type == Z_SRW_query_type_pqf
+#else
+        !strcmp(req->queryType, "pqf")
+#endif
+        )
+    {
+        Z_RPNQuery *RPNquery;
+        YAZ_PQF_Parser pqf_parser;
 
+        pqf_parser = yaz_pqf_create ();
 
-std::string 
-yf::SRUtoZ3950::Rep::sru_protocol(const Z_HTTP_Request &http_req) const
-{
-    const std::string mime_urlencoded("application/x-www-form-urlencoded");
-    const std::string mime_text_xml("text/xml");
-    const std::string mime_soap_xml("application/soap+xml");
-
-    const std::string http_method(http_req.method);
-    const std::string http_type 
-        =  http_header_value(http_req.headers, "Content-Type");
-
-    if (http_method == "GET")
-        return "SRU GET";
-
-    if (http_method == "POST"
-              && http_type  == mime_urlencoded)
-        return "SRU POST";
-    
-    if ( http_method == "POST"
-         && (http_type  == mime_text_xml
-             || http_type  == mime_soap_xml))
-        return "SRU SOAP";
-
-    return "HTTP";
+        RPNquery = yaz_pqf_parse (pqf_parser, odr_en,
+#ifdef Z_SRW_query_type_pqf
+        req->query.pqf
+#else
+        req->query
+#endif
+            );
+        yaz_pqf_destroy(pqf_parser);
+
+        if (!RPNquery)
+            return YAZ_SRW_QUERY_SYNTAX_ERROR;
+
+        z_query->which = Z_Query_type_1;
+        z_query->u.type_1 =  RPNquery;
+
+        return 0;
+    }
+    return YAZ_SRW_MANDATORY_PARAMETER_NOT_SUPPLIED;
 }
 
-std::string 
-yf::SRUtoZ3950::Rep::debug_http(const Z_HTTP_Request &http_req) const
+bool yf::SRUtoZ3950::Impl::z3950_to_srw_diagnostics_ok(
+    mp::odr &odr_en,
+    Z_SRW_searchRetrieveResponse
+    *sru_res,
+    Z_Records *records) const
 {
-    std::string message("<html>\n<body>\n<h1>"
-                        "Metaproxy SRUtoZ3950 filter"
-                        "</h1>\n");
-    
-    message += "<h3>HTTP Info</h3><br/>\n";
-    message += "<p>\n";
-    message += "<b>Method: </b> " + std::string(http_req.method) + "<br/>\n";
-    message += "<b>Version:</b> " + std::string(http_req.version) + "<br/>\n";
-    message += "<b>Path:   </b> " + std::string(http_req.path) + "<br/>\n";
-
-    message += "<b>Content-Type:</b>"
-        + http_header_value(http_req.headers, "Content-Type")
-        + "<br/>\n";
-    message += "<b>Content-Length:</b>"
-        + http_header_value(http_req.headers, "Content-Length")
-        + "<br/>\n";
-    message += "</p>\n";    
-    
-    message += "<h3>Headers</h3><br/>\n";
-    message += "<p>\n";    
-    Z_HTTP_Header* header = http_req.headers;
-    while (header){
-        message += "<b>Header: </b> <i>" 
-            + std::string(header->name) + ":</i> "
-            + std::string(header->value) + "<br/>\n";
-        header = header->next;
-    }
-    message += "</p>\n";    
-    message += "</body>\n</html>\n";
-    return message;
+    // checking non surrogate diagnostics in Z3950 present response package
+    if (records
+        && records->which == Z_Records_NSD
+        && records->u.nonSurrogateDiagnostic)
+    {
+        z3950_to_srw_diag(odr_en, sru_res,
+                          records->u.nonSurrogateDiagnostic);
+        return false;
+    }
+    return true;
 }
 
-void yf::SRUtoZ3950::Rep::http_response(metaproxy_1::Package &package, 
-                                        const std::string &content, 
-                                        int http_code) const
+int yf::SRUtoZ3950::Impl::z3950_to_srw_diag(
+    mp::odr &odr_en,
+    Z_SRW_searchRetrieveResponse *sru_res,
+    Z_DefaultDiagFormat *ddf) const
 {
-
-    Z_GDU *zgdu_req = package.request().get(); 
-    Z_GDU *zgdu_res = 0; 
-    mp::odr odr;
-    zgdu_res 
-       = odr.create_HTTP_Response(package.session(), 
-                                  zgdu_req->u.HTTP_Request, 
-                                  http_code);
-        
-    zgdu_res->u.HTTP_Response->content_len = content.size();
-    zgdu_res->u.HTTP_Response->content_buf 
-        = (char*) odr_malloc(odr, zgdu_res->u.HTTP_Response->content_len);
-    
-    strncpy(zgdu_res->u.HTTP_Response->content_buf, 
-            content.c_str(),  zgdu_res->u.HTTP_Response->content_len);
-    
-    //z_HTTP_header_add(odr, &hres->headers,
-    //                  "Content-Type", content_type.c_str());
-    package.response() = zgdu_res;
+    int bib1_code = *ddf->condition;
+    sru_res->num_diagnostics = 1;
+    sru_res->diagnostics = (Z_SRW_diagnostic *)
+        odr_malloc(odr_en, sizeof(*sru_res->diagnostics));
+    yaz_mk_std_diagnostic(odr_en, sru_res->diagnostics,
+                          yaz_diag_bib1_to_srw(bib1_code),
+                          ddf->u.v2Addinfo);
+    return 0;
 }
 
-
-
-
 static mp::filter::Base* filter_creator()
 {
     return new mp::filter::SRUtoZ3950;
 }
 
 extern "C" {
-    struct metaproxy_1_filter_struct metaproxy_1_filter_sru_to_z3950 = {
+    struct metaproxy_1_filter_struct metaproxy_1_filter_sru_z3950 = {
         0,
-        "SRUtoZ3950",
+        "sru_z3950",
         filter_creator
     };
 }
@@ -424,8 +1032,9 @@ extern "C" {
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
- * c-file-style: "stroustrup"
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab
  */
+