X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=src%2Ffilter_sru_to_z3950.cpp;h=9c1a12a65176e16013035ef2937d6b94e9b8d17e;hb=a911db8ff225da3d204c6e9371353895225ae231;hp=bfc3c23ef43d99b63d09cf2b6514343d259fff98;hpb=255742d32b6c68a14c149e4daa7b1dcd125d9b05;p=metaproxy-moved-to-github.git

diff --git a/src/filter_sru_to_z3950.cpp b/src/filter_sru_to_z3950.cpp
index bfc3c23..9c1a12a 100644
--- a/src/filter_sru_to_z3950.cpp
+++ b/src/filter_sru_to_z3950.cpp
@@ -1,4 +1,4 @@
-/* $Id: filter_sru_to_z3950.cpp,v 1.10 2006-09-21 11:43:41 marc Exp $
+/* $Id: filter_sru_to_z3950.cpp,v 1.22 2006-10-10 14:20:16 marc Exp $
    Copyright (c) 2005-2006, Index Data.
 
    See the LICENSE file for details
@@ -9,6 +9,7 @@
 #include "package.hpp"
 #include "util.hpp"
 #include "gduutil.hpp"
+#include "sru_util.hpp"
 #include "filter_sru_to_z3950.hpp"
 
 #include <yaz/zgdu.h>
@@ -21,59 +22,34 @@
 #include <iostream>
 #include <sstream>
 #include <string>
-
+#include <algorithm>
 
 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;
-        private:
-            union SRW_query {char * cql; char * xcql; char * pqf;};
-            typedef const int& SRW_query_type;
+        class SRUtoZ3950::Impl {
         public:
             void configure(const xmlNode *xmlnode);
             void process(metaproxy_1::Package &package) const;
         private:
-            std::string sru_protocol(const Z_HTTP_Request &http_req) const;
+            union SRW_query {char * cql; char * xcql; char * pqf;};
+            typedef const int& SRW_query_type;
+        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;
+            //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 build_simple_explain(mp::Package &package, 
+                                      mp::odr &odr_en,
+                                      Z_SRW_PDU *sru_pdu_res,
+                                      Z_SRW_explainRequest const *er_req) 
+                const;
             bool build_sru_response(mp::Package &package, 
                                     mp::odr &odr_en,
                                     Z_SOAP *soap,
@@ -83,10 +59,15 @@ namespace metaproxy_1 {
             Z_SRW_PDU * decode_sru_request(mp::Package &package,   
                                            mp::odr &odr_de,
                                            mp::odr &odr_en,
-                                           Z_SRW_PDU *&sru_pdu_res,
+                                           Z_SRW_PDU *sru_pdu_res,
                                            Z_SOAP *&soap,
                                            char *charset,
-                                           const char *stylesheet) const;
+                                           char *stylesheet) const;
+            bool check_sru_query_exists(mp::Package &package,
+                                       mp::odr &odr_en,
+                                       Z_SRW_PDU *sru_pdu_res,
+                                       Z_SRW_searchRetrieveRequest 
+                                       const *sr_req) const;
             bool z3950_build_query(mp::odr &odr_en, Z_Query *z_query, 
                                    const SRW_query &query, 
                                    SRW_query_type query_type) const;
@@ -99,29 +80,27 @@ namespace metaproxy_1 {
                                       Z_SRW_PDU *sru_pdu_res,
                                       Z_SRW_searchRetrieveRequest 
                                           const *sr_req) const;
-                                      //const std::string &database, 
-                                      //const std::string &query, 
-                                      //int query_type) 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;
-            //unsigned int start_position,
-            //unsigned int records_requested) const;
             bool z3950_scan_request(mp::Package &package,
                                     mp::odr &odr_en,
                                     Z_SRW_PDU *sru_pdu_res,
                                     Z_SRW_scanRequest 
                                     const *sr_req) const;
-            //const std::string &database, 
-            //const std::string &query, 
-            //int query_type) const;
+            Z_ElementSetNames * build_esn_from_schema(mp::odr &odr_en, 
+                                                      const char *schema) 
+                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)
 {
 }
 
@@ -139,11 +118,11 @@ 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 *xmlnode)
 {
 }
 
-void yf::SRUtoZ3950::Rep::process(mp::Package &package) const
+void yf::SRUtoZ3950::Impl::process(mp::Package &package) const
 {
     Z_GDU *zgdu_req = package.request().get();
 
@@ -159,23 +138,25 @@ void yf::SRUtoZ3950::Rep::process(mp::Package &package) const
     // TODO: Z3950 response parsing and translation to SRU package
     bool ok = true;    
 
-    Z_SRW_PDU *sru_pdu_req = 0;
     mp::odr odr_de(ODR_DECODE);
+    Z_SRW_PDU *sru_pdu_req = 0;
 
-    Z_SRW_PDU *sru_pdu_res = 0;
     mp::odr odr_en(ODR_ENCODE);
+    //Z_SRW_PDU *sru_pdu_res = 0;
+    Z_SRW_PDU *sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
 
     Z_SOAP *soap = 0;
     char *charset = 0;
-    const char *stylesheet = 0;
+    char *stylesheet = 0;
 
     if (! (sru_pdu_req = decode_sru_request(package, odr_de, odr_en, 
                                             sru_pdu_res, soap,
                                             charset, stylesheet)))
     {
-        //build_sru_debug_package(package);
+        build_simple_explain(package, odr_en, sru_pdu_res, 0);
         build_sru_response(package, odr_en, soap, 
                            sru_pdu_res, charset, stylesheet);
+        package.session().close();
         return;
     }
     
@@ -190,21 +171,25 @@ void yf::SRUtoZ3950::Rep::process(mp::Package &package) const
     // explain
     if (sru_pdu_req && sru_pdu_req->which == Z_SRW_explain_request)
     {
-        //Z_SRW_searchRetrieveRequest *sr_req = sru_pdu_req->u.request;
-        sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
-        std::cout << "TODO: implement explain response";
-        
+        Z_SRW_explainRequest *er_req = sru_pdu_req->u.explain_request;
+        //sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
+
+        build_simple_explain(package, odr_en, sru_pdu_res, er_req);
     }
-    
 
     // searchRetrieve
-    if (sru_pdu_req && sru_pdu_req->which == Z_SRW_searchRetrieve_request)
+    else if (sru_pdu_req 
+        && sru_pdu_req->which == Z_SRW_searchRetrieve_request
+        && sru_pdu_req->u.request)
     {
         Z_SRW_searchRetrieveRequest *sr_req = sru_pdu_req->u.request;   
         
         sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_searchRetrieve_response);
 
-        if (z3950_init_request(package))
+        // checking that we have a query
+        ok = check_sru_query_exists(package, odr_en, sru_pdu_res, sr_req);
+
+        if (ok && z3950_init_request(package))
         {
             {
                 ok = z3950_search_request(package, odr_en,
@@ -225,13 +210,22 @@ void yf::SRUtoZ3950::Rep::process(mp::Package &package) const
     }
 
     // scan
-    else if (sru_pdu_req && sru_pdu_req->which == Z_SRW_scan_request)
+    else if (sru_pdu_req 
+             && sru_pdu_req->which == Z_SRW_scan_request
+             && sru_pdu_req->u.scan_request)
     {
         Z_SRW_scanRequest  *sr_req = sru_pdu_req->u.scan_request;   
 
         sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_scan_response);
         
-        if (z3950_init_request(package))
+        // 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), 
+                               4, "scan");
+ 
+        // to be used when we do scan
+        if (false && z3950_init_request(package))
         {
             z3950_scan_request(package, odr_en, sru_pdu_res, sr_req);    
             z3950_close_request(package);
@@ -251,24 +245,94 @@ void yf::SRUtoZ3950::Rep::process(mp::Package &package) const
     build_sru_response(package, odr_en, soap, 
                        sru_pdu_res, charset, stylesheet);
     return;
+}
 
 
+bool yf::SRUtoZ3950::Impl::build_simple_explain(mp::Package &package, 
+                                               mp::odr &odr_en,
+                                               Z_SRW_PDU *sru_pdu_res,
+                                               Z_SRW_explainRequest 
+                                               const *er_req) const
+{
+    // z3950'fy recordPacking
+    int record_packing = Z_SRW_recordPacking_XML;
+    if (er_req && er_req->recordPacking && 's' == *(er_req->recordPacking))
+        record_packing = Z_SRW_recordPacking_string;
 
+    // getting database info
+    std::string database("Default");
+    if (er_req && er_req->database)
+        database = er_req->database;
 
+    // getting host and port info
+    std::string host = package.origin().listen_host();
+    std::string port = mp_util::to_string(package.origin().listen_port());
 
+    // overwriting host and port info if set from HTTP Host header
+    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;
+        if (http_req)
+        {
+            std::string http_host_address
+                = mp_util::http_header_value(http_req->headers, "Host");
 
+            std::string::size_type i = http_host_address.rfind(":");
+            if (i != std::string::npos)
+            {
+                host.assign(http_host_address, 0, i);
+                port.assign(http_host_address, i + 1, std::string::npos);
+            }
+        }
+    }
+
+    // building SRU explain record
+    std::string explain_xml 
+        = mp_util::to_string(
+            "<explain>\n"
+            "  <serverInfo protocol='SRU'>\n"
+            "  <host>")
+        + host
+        + mp_util::to_string("</host>\n"
+            "  <port>")
+        + port
+        + mp_util::to_string("</port>\n"
+            "  <database>")
+        + database
+        + mp_util::to_string("</database>\n"
+            "  </serverInfo>\n"
+            "</explain>\n");
+    
+    
+    // preparing explain record insert
+    Z_SRW_explainResponse *sru_res = sru_pdu_res->u.explain_response;
+    //sru_res->record 
+    //    = (Z_SRW_record *) odr_malloc(odr_en, sizeof(Z_SRW_record));
+    
+    // inserting one and only explain record
+    
+    sru_res->record.recordPosition = odr_intdup(odr_en, 1);
+    sru_res->record.recordPacking = record_packing;
+    sru_res->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
+    sru_res->record.recordData_len = 1 + explain_xml.size();
+    sru_res->record.recordData_buf
+        = odr_strdupn(odr_en, (const char *)explain_xml.c_str(), 
+                      1 + explain_xml.size());
+
+    return true;
+};
 
-}
 
-bool yf::SRUtoZ3950::Rep::build_sru_debug_package(mp::Package &package) const
+bool yf::SRUtoZ3950::Impl::build_sru_debug_package(mp::Package &package) const
 {
     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);
+        std::string content = mp_util::http_headers_debug(*http_req);
         int http_code = 400;    
-        http_response(package, content, http_code);
+        mp_util::http_response(package, content, http_code);
         return true;
     }
     package.session().close();
@@ -276,7 +340,7 @@ bool yf::SRUtoZ3950::Rep::build_sru_debug_package(mp::Package &package) const
 }
 
 
-bool yf::SRUtoZ3950::Rep::build_sru_response(mp::Package &package, 
+bool yf::SRUtoZ3950::Impl::build_sru_response(mp::Package &package, 
                                              mp::odr &odr_en,
                                              Z_SOAP *soap,
                                              const Z_SRW_PDU *sru_pdu_res,
@@ -347,13 +411,13 @@ bool yf::SRUtoZ3950::Rep::build_sru_response(mp::Package &package,
 
 
 
- Z_SRW_PDU * yf::SRUtoZ3950::Rep::decode_sru_request(mp::Package &package,
+ Z_SRW_PDU * yf::SRUtoZ3950::Impl::decode_sru_request(mp::Package &package,
                                                      mp::odr &odr_de,
                                                      mp::odr &odr_en,
-                                                     Z_SRW_PDU *&sru_pdu_res,
+                                                     Z_SRW_PDU *sru_pdu_res,
                                                      Z_SOAP *&soap,
                                                      char *charset,
-                                                     const char *stylesheet) 
+                                                     char *stylesheet) 
      const
 {
     Z_GDU *zgdu_req = package.request().get();
@@ -370,16 +434,16 @@ bool yf::SRUtoZ3950::Rep::build_sru_response(mp::Package &package,
     if (! http_req)
         return 0;
 
-    Z_SRW_PDU *sru_pdu_res_exp = yaz_srw_get(odr_en, Z_SRW_explain_response);
+    //Z_SRW_PDU *sru_pdu_res_exp = yaz_srw_get(odr_en, Z_SRW_explain_response);
     
     if (0 == yaz_sru_decode(http_req, &sru_pdu_req, &soap, 
                             odr_de, &charset, 
-                            &(sru_pdu_res_exp->u.response->diagnostics), 
-                            &(sru_pdu_res_exp->u.response->num_diagnostics)))
+                            &(sru_pdu_res->u.response->diagnostics), 
+                            &(sru_pdu_res->u.response->num_diagnostics)))
     {
-        if (sru_pdu_res_exp->u.response->num_diagnostics)
+        if (sru_pdu_res->u.response->num_diagnostics)
         {
-            sru_pdu_res = sru_pdu_res_exp;
+            //sru_pdu_res = sru_pdu_res_exp;
             package.session().close();
             return 0;
         }
@@ -390,7 +454,7 @@ bool yf::SRUtoZ3950::Rep::build_sru_response(mp::Package &package,
         return sru_pdu_req;
     else 
     {
-        sru_pdu_res = sru_pdu_res_exp;
+        //sru_pdu_res = sru_pdu_res_exp;
         package.session().close();
         return 0;
     }
@@ -398,7 +462,48 @@ bool yf::SRUtoZ3950::Rep::build_sru_response(mp::Package &package,
 }
 
 bool 
-yf::SRUtoZ3950::Rep::z3950_init_request(mp::Package &package, 
+yf::SRUtoZ3950::Impl::check_sru_query_exists(mp::Package &package, 
+                                            mp::odr &odr_en,
+                                            Z_SRW_PDU *sru_pdu_res, 
+                                            Z_SRW_searchRetrieveRequest 
+                                                              const *sr_req)
+    const
+{
+    if( (sr_req->query_type == Z_SRW_query_type_cql && !sr_req->query.cql) )
+    {
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               7, "query");
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               10, "CQL query is empty");
+        return false;
+    }
+    if( (sr_req->query_type == Z_SRW_query_type_xcql && !sr_req->query.xcql) )
+    {
+         yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               10, "XCQL query is empty");
+         return false;
+   }
+    if( (sr_req->query_type == Z_SRW_query_type_pqf && !sr_req->query.pqf) )
+    {
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               10, "PQF query is empty");
+        return false;
+    }
+    return true;
+};
+
+
+
+bool 
+yf::SRUtoZ3950::Impl::z3950_init_request(mp::Package &package, 
                                              const std::string &database) const
 {
     // prepare Z3950 package
@@ -450,9 +555,12 @@ yf::SRUtoZ3950::Rep::z3950_init_request(mp::Package &package,
 }
 
 bool 
-yf::SRUtoZ3950::Rep::z3950_close_request(mp::Package &package) const
+yf::SRUtoZ3950::Impl::z3950_close_request(mp::Package &package) const
 {
-    // prepare Z3950 package 
+    // close SRU package
+    package.session().close();
+
+    // prepare and close Z3950 package 
     Package z3950_package(package.session(), package.origin());
     z3950_package.copy_filter(package);
     z3950_package.session().close();
@@ -471,31 +579,33 @@ yf::SRUtoZ3950::Rep::z3950_close_request(mp::Package &package) const
     //    return true;
 
     if (z3950_package.session().is_closed()){
-        //package.session().close();
         return true;
     }
     return false;
 }
 
 bool 
-yf::SRUtoZ3950::Rep::z3950_search_request(mp::Package &package,  
+yf::SRUtoZ3950::Impl::z3950_search_request(mp::Package &package,  
                                           mp::odr &odr_en,
                                           Z_SRW_PDU *sru_pdu_res,
                                           Z_SRW_searchRetrieveRequest 
                                           const *sr_req) const
 {
+
+    assert(sru_pdu_res->u.response);
+
     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_searchRequest);
+    z3950_package.copy_filter(package);
 
     //add stuff in z3950 apdu
+    Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_searchRequest);
     Z_SearchRequest *z_searchRequest = apdu->u.searchRequest;
 
     // z3950'fy database
     z_searchRequest->num_databaseNames = 1;
     z_searchRequest->databaseNames = (char**)
         odr_malloc(odr_en, sizeof(char *));
+
     if (sr_req->database)
         z_searchRequest->databaseNames[0] 
             = odr_strdup(odr_en, const_cast<char *>(sr_req->database));
@@ -512,7 +622,10 @@ yf::SRUtoZ3950::Rep::z3950_search_request(mp::Package &package,
                            (const SRW_query&)sr_req->query, 
                            sr_req->query_type))
     {    
-        //send_to_srw_client_error(7, "query");
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               7, "query");
         return false;
     }
 
@@ -521,15 +634,16 @@ yf::SRUtoZ3950::Rep::z3950_search_request(mp::Package &package,
         
     z3950_package.move();
 
+
+    Z_GDU *z3950_gdu = z3950_package.response().get();
+    //std::cout << "z3950_search_request " << *z3950_gdu << "\n";
+
     //TODO: check success condition
 
     //int yaz_diag_bib1_to_srw (int bib1_code);
     //int yaz_diag_srw_to_bib1(int srw_code);
     //Se kode i src/seshigh.c (srw_bend_search, srw_bend_init).
 
-    Z_GDU *z3950_gdu = z3950_package.response().get();
-    //std::cout << "z3950_search_request " << *z3950_gdu << "\n";
-
     if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950 
         && z3950_gdu->u.z3950->which == Z_APDU_searchResponse
         && z3950_gdu->u.z3950->u.searchResponse->searchStatus)
@@ -557,31 +671,23 @@ yf::SRUtoZ3950::Rep::z3950_search_request(mp::Package &package,
 }
 
 bool 
-yf::SRUtoZ3950::Rep::z3950_present_request(mp::Package &package, 
+yf::SRUtoZ3950::Impl::z3950_present_request(mp::Package &package, 
                                            mp::odr &odr_en,
                                            Z_SRW_PDU *sru_pdu_res,
                                            Z_SRW_searchRetrieveRequest 
                                            const *sr_req)
     const
 {
+    assert(sru_pdu_res->u.response);
 
     if (!sr_req)
         return false;
 
     
-    // no need to work if nobody wants records seen ..
+    // no need to work if nobody wants record ..
     if (!(sr_req->maximumRecords) || 0 == *(sr_req->maximumRecords))
         return true;
 
-    // creating Z3950 package
-    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_presentRequest);
-
-    //TODO: add stuff in apdu
-    assert(apdu->u.presentRequest);
-
     bool send_z3950_present = true;
 
     // recordXPath unsupported.
@@ -615,10 +721,45 @@ yf::SRUtoZ3950::Rep::z3950_present_request(mp::Package &package,
                                80, 0);
     }
     
+    // start record requested negative, or larger than number of records
+    if (sr_req->startRecord 
+        && 
+        ((*(sr_req->startRecord) < 0)       // negative
+         ||
+         (sru_pdu_res->u.response->numberOfRecords  //out of range
+          && *(sr_req->startRecord) 
+          > *(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), 
+                               61, 0);
+    }    
+
+    // maximumRecords requested negative
+    if (sr_req->maximumRecords
+        && *(sr_req->maximumRecords) < 0) 
+          
+    {
+        send_z3950_present = false;
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               6, "maximumRecords");
+    }    
+
     // exit on all these above diagnostics
     if (!send_z3950_present)
         return false;
 
+    // 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);
 
     // z3950'fy start record position
     if (sr_req->startRecord)
@@ -628,66 +769,154 @@ yf::SRUtoZ3950::Rep::z3950_present_request(mp::Package &package,
         *(apdu->u.presentRequest->resultSetStartPoint) = 1;
     
     // z3950'fy number of records requested 
+    // protect against requesting records out of range
     if (sr_req->maximumRecords)
         *(apdu->u.presentRequest->numberOfRecordsRequested) 
-            = *(sr_req->maximumRecords);
+            = std::min(*(sr_req->maximumRecords), 
+                  *(sru_pdu_res->u.response->numberOfRecords)
+                  - *(apdu->u.presentRequest->resultSetStartPoint)
+                  + 1);
      
-    // TODO: recordPacking
-
-    // TODO: z3950'fy record schema
-    //if (sr_req->recordSchema)
-    //    *(apdu->u.presentRequest->preferredRecordSyntax) 
-    //        = *(sr_req->recordSchema);  
-
-    // TODO: z3950'fy time to live
+    // z3950'fy recordPacking
+    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)
+        = yaz_oidval_to_z3950oid (odr_en, CLASS_RECSYN, VAL_TEXT_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 
+             = build_esn_from_schema(odr_en, 
+                                     (const char *) sr_req->recordSchema); 
+     }
+
+    // z3950'fy time to live - flagged as diagnostics above
     //if (sr_req->resultSetTTL)
 
-
-
-
+    // attaching Z3950 package to filter chain
     z3950_package.request() = apdu;
 
     //std::cout << "z3950_present_request " << *apdu << "\n";   
     z3950_package.move();
 
-    //TODO: check success condition
+    //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)
+    if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950 
+        || z3950_gdu->u.z3950->which != Z_APDU_presentResponse
+        || !z3950_gdu->u.z3950->u.presentResponse)
 
     {
-        //std::cout << "z3950_present_request OK\n";
-
-        Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
-        if (pr)
-        {
+        yaz_add_srw_diagnostic(odr_en,
+                               &(sru_pdu_res->u.response->diagnostics), 
+                               &(sru_pdu_res->u.response->num_diagnostics), 
+                               2, 0);
+        package.session().close();
+        return false;
+    }
+    
 
-            // srw'fy number of returned records
-            //sru_pdu_res->u.response->num_records 
-            //    = *(pr->numberOfRecordsReturned);
-            //= (int *) odr_malloc(odr_en, sizeof(int *));
-            //*(sru_pdu_res->u.response->num_records) 
-            //    = *(pr->numberOfRecordsReturned);
+    // everything fine, continuing
+    //std::cout << "z3950_present_request OK\n";
 
-            // srw'fy nextRecordPosition
-            //if (! sru_pdu_res->u.response->nextRecordPosition)
-            sru_pdu_res->u.response->nextRecordPosition 
-                = (int *) odr_malloc(odr_en, sizeof(int *));
-            *(sru_pdu_res->u.response->nextRecordPosition) 
-                = *(pr->nextResultSetPosition);
-        }
-        return true;
+    Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
+    Z_SRW_searchRetrieveResponse *sru_res = sru_pdu_res->u.response;
+        
+    // checking non surrogate dioagnostics in Z3950 present response package
+    if (pr->records 
+        && pr->records->which == Z_Records_NSD
+        && pr->records->u.nonSurrogateDiagnostic)
+    {
+        //int http_code =
+        z3950_to_srw_diag(odr_en, sru_res, 
+                          pr->records->u.nonSurrogateDiagnostic);
+        return false;
     }
+    
+    // copy all records if existing
+    if (pr->records && pr->records->which == Z_Records_DBOSD)
+    {
+        // srw'fy number of returned records
+        sru_res->num_records
+            = pr->records->u.databaseOrSurDiagnostics->num_records;
+        
+        sru_res->records 
+            = (Z_SRW_record *) odr_malloc(odr_en, 
+                                          sru_res->num_records 
+                                             * sizeof(Z_SRW_record));
+        
 
-    return false;
+        // srw'fy nextRecordPosition
+        // next position never zero or behind the last z3950 record 
+        if (pr->nextResultSetPosition
+            && *(pr->nextResultSetPosition) > 0 
+            && *(pr->nextResultSetPosition) 
+               <= *(sru_pdu_res->u.response->numberOfRecords))
+            sru_res->nextRecordPosition 
+                = odr_intdup(odr_en, *(pr->nextResultSetPosition));
+        
+        // inserting all records
+        for (int i = 0; i < sru_res->num_records; i++)
+        {
+            Z_NamePlusRecord *npr 
+                = pr->records->u.databaseOrSurDiagnostics->records[i];
+            
+            sru_res->records[i].recordPosition 
+                = odr_intdup(odr_en, 
+                             i + *(apdu->u.presentRequest->resultSetStartPoint));
+            
+            sru_res->records[i].recordPacking = record_packing;
+            
+            if (npr->which != Z_NamePlusRecord_databaseRecord)
+            {
+                sru_res->records[i].recordSchema = "diagnostic";
+                sru_res->records[i].recordData_buf = "67";
+                sru_res->records[i].recordData_len = 2;
+            }
+            else
+            {
+                Z_External *r = npr->u.databaseRecord;
+                oident *ent = oid_getentbyoid(r->direct_reference);
+                if (r->which == Z_External_octet 
+                    && ent->value == VAL_TEXT_XML)
+                {
+                    sru_res->records[i].recordSchema = "dc";
+                    sru_res->records[i].recordData_buf
+                        = odr_strdupn(odr_en, 
+                                      (const char *)r->u.octet_aligned->buf, 
+                                      r->u.octet_aligned->len);
+                    sru_res->records[i].recordData_len 
+                        = r->u.octet_aligned->len;
+                }
+                else
+                {
+                    sru_res->records[i].recordSchema = "diagnostic";
+                    sru_res->records[i].recordData_buf = "67";
+                    sru_res->records[i].recordData_len = 2;
+                }
+            }   
+        }    
+    }
+    
+    return true;
 }
 
 bool 
-yf::SRUtoZ3950::Rep::z3950_scan_request(mp::Package &package,
+yf::SRUtoZ3950::Impl::z3950_scan_request(mp::Package &package,
                                         mp::odr &odr_en,
                                         Z_SRW_PDU *sru_pdu_res,
                                         Z_SRW_scanRequest const *sr_req) const 
 {
+    assert(sru_pdu_res->u.scan_response);
+
     Package z3950_package(package.session(), package.origin());
     z3950_package.copy_filter(package); 
     //mp::odr odr_en(ODR_ENCODE);
@@ -744,7 +973,7 @@ yf::SRUtoZ3950::Rep::z3950_scan_request(mp::Package &package,
     return false;
 }
 
-bool yf::SRUtoZ3950::Rep::z3950_build_query(mp::odr &odr_en, Z_Query *z_query, 
+bool yf::SRUtoZ3950::Impl::z3950_build_query(mp::odr &odr_en, Z_Query *z_query, 
                                             const SRW_query &query, 
                                             SRW_query_type query_type) const
 {        
@@ -787,92 +1016,123 @@ bool yf::SRUtoZ3950::Rep::z3950_build_query(mp::odr &odr_en, Z_Query *z_query,
 }
 
 
-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");
+// std::string 
+// yf::SRUtoZ3950::Impl::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");
+//     const std::string http_method(http_req.method);
+//     const std::string http_type 
+//         =  mp_util::http_header_value(http_req.headers, "Content-Type");
 
-    if (http_method == "GET")
-        return "SRU GET";
+//     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_urlencoded)
+//         return "SRU POST";
     
-    if ( http_method == "POST"
-         && (http_type  == mime_text_xml
-             || http_type  == mime_soap_xml))
-        return "SRU SOAP";
-
-    return "HTTP";
-}
-
-std::string 
-yf::SRUtoZ3950::Rep::debug_http(const Z_HTTP_Request &http_req) const
-{
-    std::string message("<html>\n<body>\n<h1>"
-                        "Metaproxy SRUtoZ3950 filter"
-                        "</h1>\n");
+//     if ( http_method == "POST"
+//          && (http_type  == mime_text_xml
+//              || http_type  == mime_soap_xml))
+//         return "SRU SOAP";
+
+//     return "HTTP";
+// }
+
+// std::string 
+// yf::SRUtoZ3950::Impl::debug_http(const Z_HTTP_Request &http_req) 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>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>"
+//         + mp_util::http_header_value(http_req.headers, "Content-Type")
+//         + "<br/>\n";
+//     message += "<b>Content-Length:</b>"
+//         + mp_util::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;
-}
-
-void yf::SRUtoZ3950::Rep::http_response(metaproxy_1::Package &package, 
-                                        const std::string &content, 
-                                        int http_code) 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);
+//     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;
+// }
+
+// void yf::SRUtoZ3950::Impl::http_response(metaproxy_1::Package &package, 
+//                                         const std::string &content, 
+//                                         int http_code) 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);
+//     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);
+//     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;
+//     //z_HTTP_header_add(odr, &hres->headers,
+//     //                  "Content-Type", content_type.c_str());
+//     package.response() = zgdu_res;
+// }
+
+
+Z_ElementSetNames * 
+yf::SRUtoZ3950::Impl::build_esn_from_schema(mp::odr &odr_en, 
+                                           const char *schema) const
+{
+  if (!schema)
+        return 0;
+  
+    Z_ElementSetNames *esn 
+        = (Z_ElementSetNames *) odr_malloc(odr_en, sizeof(Z_ElementSetNames));
+    esn->which = Z_ElementSetNames_generic;
+    esn->u.generic = odr_strdup(odr_en, schema);
+    return esn; 
 }
 
+int 
+yf::SRUtoZ3950::Impl::z3950_to_srw_diag(mp::odr &odr_en, 
+                                       Z_SRW_searchRetrieveResponse *sru_res,
+                                       Z_DefaultDiagFormat *ddf) const
+{
+    int bib1_code = *ddf->condition;
+    if (bib1_code == 109)
+        return 404;
+    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(*ddf->condition), 
+                          ddf->u.v2Addinfo);
+    return 0;
+}
 
 
 
@@ -884,7 +1144,7 @@ static mp::filter::Base* filter_creator()
 extern "C" {
     struct metaproxy_1_filter_struct metaproxy_1_filter_sru_to_z3950 = {
         0,
-        "SRUtoZ3950",
+        "sru_z3950",
         filter_creator
     };
 }