+ yaz_log(LOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
+ m_bytes_sent, m_bytes_recv);
+ nmem_destroy(m_initRequest_mem);
+ nmem_destroy(m_mem_invalid_session);
+ xfree (m_proxyTarget);
+ xfree (m_default_target);
+ xfree (m_proxy_authentication);
+ xfree (m_optimize);
+ xfree (m_stylesheet);
+ xfree (m_schema);
+ if (m_s2z_odr_init)
+ odr_destroy(m_s2z_odr_init);
+ if (m_s2z_odr_search)
+ odr_destroy(m_s2z_odr_search);
+ delete m_config;
+}
+
+int Yaz_Proxy::set_config(const char *config)
+{
+ delete m_config;
+ m_config = new Yaz_ProxyConfig();
+ xfree(m_config_fname);
+ m_config_fname = xstrdup(config);
+ int r = m_config->read_xml(config);
+ if (!r)
+ m_config->get_generic_info(&m_log_mask, &m_max_clients);
+ return r;
+}
+
+void Yaz_Proxy::set_default_target(const char *target)
+{
+ xfree (m_default_target);
+ m_default_target = 0;
+ if (target)
+ m_default_target = (char *) xstrdup (target);
+}
+
+void Yaz_Proxy::set_proxy_authentication (const char *auth)
+{
+ xfree (m_proxy_authentication);
+ m_proxy_authentication = 0;
+ if (auth)
+ m_proxy_authentication = (char *) xstrdup (auth);
+}
+
+Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
+{
+ if (m_parent)
+ return m_parent->check_reconfigure();
+
+ Yaz_ProxyConfig *cfg = m_config;
+ if (m_reconfig_flag)
+ {
+ yaz_log(LOG_LOG, "reconfigure");
+ yaz_log_reopen();
+ if (m_config_fname && cfg)
+ {
+ yaz_log(LOG_LOG, "reconfigure config %s", m_config_fname);
+ int r = cfg->read_xml(m_config_fname);
+ if (r)
+ yaz_log(LOG_WARN, "reconfigure failed");
+ else
+ {
+ m_log_mask = 0;
+ cfg->get_generic_info(&m_log_mask, &m_max_clients);
+ }
+ }
+ else
+ yaz_log(LOG_LOG, "reconfigure");
+ m_reconfig_flag = 0;
+ }
+ return cfg;
+}
+
+IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
+ *the_PDU_Observable, int fd)
+{
+ check_reconfigure();
+ Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable, this);
+ new_proxy->m_config = 0;
+ new_proxy->m_config_fname = 0;
+ new_proxy->timeout(m_client_idletime);
+ new_proxy->m_target_idletime = m_target_idletime;
+ new_proxy->set_default_target(m_default_target);
+ new_proxy->m_max_clients = m_max_clients;
+ new_proxy->m_log_mask = m_log_mask;
+ new_proxy->set_APDU_log(get_APDU_log());
+ if (m_log_mask & PROXY_LOG_APDU_CLIENT)
+ new_proxy->set_APDU_yazlog(1);
+ else
+ new_proxy->set_APDU_yazlog(0);
+ new_proxy->set_proxy_authentication(m_proxy_authentication);
+ sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
+ m_session_no++;
+ yaz_log (LOG_LOG, "%sNew session %s", new_proxy->m_session_str,
+ the_PDU_Observable->getpeername());
+ return new_proxy;
+}
+
+char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
+{
+ int oid[OID_SIZE];
+ Z_OtherInformationUnit *oi;
+ struct oident ent;
+ ent.proto = PROTO_Z3950;
+ ent.oclass = CLASS_USERINFO;
+ ent.value = (oid_value) VAL_COOKIE;
+ assert (oid_ent_to_oid (&ent, oid));
+
+ if (oid_ent_to_oid (&ent, oid) &&
+ (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
+ oi->which == Z_OtherInfo_characterInfo)
+ return oi->information.characterInfo;
+ return 0;
+}
+
+char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
+{
+ int oid[OID_SIZE];
+ Z_OtherInformationUnit *oi;
+ struct oident ent;
+ ent.proto = PROTO_Z3950;
+ ent.oclass = CLASS_USERINFO;
+ ent.value = (oid_value) VAL_PROXY;
+ if (oid_ent_to_oid (&ent, oid) &&
+ (oi = update_otherInformation(otherInfo, 0, oid, 1, 1)) &&
+ oi->which == Z_OtherInfo_characterInfo)
+ return oi->information.characterInfo;
+ return 0;
+}
+
+const char *Yaz_Proxy::load_balance(const char **url)
+{
+ int zurl_in_use[MAX_ZURL_PLEX];
+ Yaz_ProxyClient *c;
+ int i;
+
+ for (i = 0; i<MAX_ZURL_PLEX; i++)
+ zurl_in_use[i] = 0;
+ for (c = m_parent->m_clientPool; c; c = c->m_next)
+ {
+ for (i = 0; url[i]; i++)
+ if (!strcmp(url[i], c->get_hostname()))
+ zurl_in_use[i]++;
+ }
+ int min = 100000;
+ const char *ret = 0;
+ for (i = 0; url[i]; i++)
+ {
+ yaz_log(LOG_DEBUG, "%szurl=%s use=%d",
+ m_session_str, url[i], zurl_in_use[i]);
+ if (min > zurl_in_use[i])
+ {
+ ret = url[i];
+ min = zurl_in_use[i];
+ }
+ }
+ return ret;
+}
+
+Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
+ const char *proxy_host)
+{
+ assert (m_parent);
+ Yaz_Proxy *parent = m_parent;
+ Z_OtherInformation **oi;
+ Yaz_ProxyClient *c = m_client;
+
+ if (!m_proxyTarget)
+ {
+ const char *url[MAX_ZURL_PLEX];
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+ if (proxy_host)
+ {
+#if 1
+/* only to be enabled for debugging... */
+ if (!strcmp(proxy_host, "stop"))
+ exit(0);
+#endif
+ xfree(m_default_target);
+ m_default_target = xstrdup(proxy_host);
+ proxy_host = m_default_target;
+ }
+ int client_idletime = -1;
+ const char *cql2rpn_fname = 0;
+ url[0] = m_default_target;
+ url[1] = 0;
+ if (cfg)
+ {
+ int pre_init = 0;
+ cfg->get_target_info(proxy_host, url, &m_bw_max,
+ &m_pdu_max, &m_max_record_retrieve,
+ &m_target_idletime, &client_idletime,
+ &parent->m_max_clients,
+ &m_keepalive_limit_bw,
+ &m_keepalive_limit_pdu,
+ &pre_init,
+ &cql2rpn_fname);
+ }
+ if (client_idletime != -1)
+ {
+ m_client_idletime = client_idletime;
+ timeout(m_client_idletime);
+ }
+ if (cql2rpn_fname)
+ m_cql2rpn.set_pqf_file(cql2rpn_fname);
+ if (!url[0])
+ {
+ yaz_log(LOG_LOG, "%sNo default target", m_session_str);
+ return 0;
+ }
+ // we don't handle multiplexing for cookie session, so we just
+ // pick the first one in this case (anonymous users will be able
+ // to use any backend)
+ if (cookie && *cookie)
+ m_proxyTarget = (char*) xstrdup(url[0]);
+ else
+ m_proxyTarget = (char*) xstrdup(load_balance(url));
+ }
+ if (cookie && *cookie)
+ { // search in sessions with a cookie
+ for (c = parent->m_clientPool; c; c = c->m_next)
+ {
+ assert (c->m_prev);
+ assert (*c->m_prev == c);
+ if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
+ !strcmp(m_proxyTarget, c->get_hostname()))
+ {
+ // Found it in cache
+ // The following handles "cancel"
+ // If connection is busy (waiting for PDU) and
+ // we have an initRequest we can safely do re-open
+ if (c->m_waiting && apdu->which == Z_APDU_initRequest)
+ {
+ yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
+ c->get_hostname());
+ c->close();
+ c->m_init_flag = 0;
+
+ c->m_last_ok = 0;
+ c->m_cache.clear();
+ c->m_last_resultCount = 0;
+ c->m_sr_transform = 0;
+ c->m_waiting = 0;
+ c->m_resultSetStartPoint = 0;
+ c->m_target_idletime = m_target_idletime;
+ if (c->client(m_proxyTarget))
+ {
+ delete c;
+ return 0;
+ }
+ c->timeout(30);
+ }
+ c->m_seqno = parent->m_seqno;
+ if (c->m_server && c->m_server != this)
+ c->m_server->m_client = 0;
+ c->m_server = this;
+ (parent->m_seqno)++;
+ yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
+ return c;
+ }
+ }
+ }
+ else if (!c)
+ {
+ // don't have a client session yet. Search in session w/o cookie
+ for (c = parent->m_clientPool; c; c = c->m_next)
+ {
+ assert (c->m_prev);
+ assert (*c->m_prev == c);
+ if (c->m_server == 0 && c->m_cookie == 0 &&
+ c->m_waiting == 0 &&
+ !strcmp(m_proxyTarget, c->get_hostname()))
+ {
+ // found it in cache
+ yaz_log (LOG_LOG, "%sREUSE %s",
+ m_session_str, c->get_hostname());
+
+ c->m_seqno = parent->m_seqno;
+ assert(c->m_server == 0);
+ c->m_server = this;
+
+ if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
+
+ (parent->m_seqno)++;
+
+ parent->pre_init();
+
+ return c;
+ }
+ }
+ }
+ if (!m_client)
+ {
+ if (apdu->which != Z_APDU_initRequest)
+ {
+ yaz_log (LOG_LOG, "no first INIT!");
+ return 0;
+ }
+ Z_InitRequest *initRequest = apdu->u.initRequest;
+
+ if (!initRequest->idAuthentication)
+ {
+ if (m_proxy_authentication)
+ {
+ initRequest->idAuthentication =
+ (Z_IdAuthentication *)
+ odr_malloc (odr_encode(),
+ sizeof(*initRequest->idAuthentication));
+ initRequest->idAuthentication->which =
+ Z_IdAuthentication_open;
+ initRequest->idAuthentication->u.open =
+ odr_strdup (odr_encode(), m_proxy_authentication);
+ }
+ }
+
+ // go through list of clients - and find the lowest/oldest one.
+ Yaz_ProxyClient *c_min = 0;
+ int min_seq = -1;
+ int no_of_clients = 0;
+ if (parent->m_clientPool)
+ yaz_log (LOG_DEBUG, "Existing sessions");
+ for (c = parent->m_clientPool; c; c = c->m_next)
+ {
+ yaz_log (LOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
+ c->m_waiting, c->get_hostname(),
+ c->m_cookie ? c->m_cookie : "");
+ no_of_clients++;
+ if (min_seq < 0 || c->m_seqno < min_seq)
+ {
+ min_seq = c->m_seqno;
+ c_min = c;
+ }
+ }
+ if (no_of_clients >= parent->m_max_clients)
+ {
+ c = c_min;
+ if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
+ {
+ yaz_log (LOG_LOG, "%sMAXCLIENTS Destroy %d",
+ m_session_str, c->m_seqno);
+ if (c->m_server && c->m_server != this)
+ delete c->m_server;
+ c->m_server = 0;
+ }
+ else
+ {
+ yaz_log (LOG_LOG, "%sMAXCLIENTS Reuse %d %d %s",
+ m_session_str,
+ c->m_seqno, parent->m_seqno, c->get_hostname());
+ xfree (c->m_cookie);
+ c->m_cookie = 0;
+ if (cookie)
+ c->m_cookie = xstrdup(cookie);
+ c->m_seqno = parent->m_seqno;
+ if (c->m_server && c->m_server != this)
+ {
+ c->m_server->m_client = 0;
+ delete c->m_server;
+ }
+ (parent->m_seqno)++;
+ c->m_target_idletime = m_target_idletime;
+ c->timeout(m_target_idletime);
+
+ if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
+
+ return c;
+ }
+ }
+ else
+ {
+ yaz_log (LOG_LOG, "%sNEW %d %s",
+ m_session_str, parent->m_seqno, m_proxyTarget);
+ c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
+ c->m_next = parent->m_clientPool;
+ if (c->m_next)
+ c->m_next->m_prev = &c->m_next;
+ parent->m_clientPool = c;
+ c->m_prev = &parent->m_clientPool;
+ }
+
+ xfree (c->m_cookie);
+ c->m_cookie = 0;
+ if (cookie)
+ c->m_cookie = xstrdup(cookie);
+
+ c->m_seqno = parent->m_seqno;
+ c->m_init_flag = 0;
+ c->m_last_resultCount = 0;
+ c->m_last_ok = 0;
+ c->m_cache.clear();
+ c->m_sr_transform = 0;
+ c->m_waiting = 0;
+ c->m_resultSetStartPoint = 0;
+ (parent->m_seqno)++;
+ if (c->client(m_proxyTarget))
+ {
+ delete c;
+ return 0;
+ }
+ c->m_target_idletime = m_target_idletime;
+ c->timeout(30);
+
+ if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
+ }
+ yaz_log (LOG_DEBUG, "get_client 3 %p %p", this, c);
+ return c;
+}
+
+void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
+{
+ int i;
+ for (i = 0; i<num; i++)
+ {
+ oident *ent;
+ Z_DefaultDiagFormat *r;
+ Z_DiagRec *p = pp[i];
+ if (p->which != Z_DiagRec_defaultFormat)
+ {
+ yaz_log(LOG_LOG, "%sError no diagnostics", m_session_str);
+ return;
+ }
+ else
+ r = p->u.defaultFormat;
+ if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
+ ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
+ yaz_log(LOG_LOG, "%sError unknown diagnostic set", m_session_str);
+ switch (r->which)
+ {
+ case Z_DefaultDiagFormat_v2Addinfo:
+ yaz_log(LOG_LOG, "%sError %d %s:%s",
+ m_session_str,
+ *r->condition, diagbib1_str(*r->condition),
+ r->u.v2Addinfo);
+ break;
+ case Z_DefaultDiagFormat_v3Addinfo:
+ yaz_log(LOG_LOG, "%sError %d %s:%s",
+ m_session_str,
+ *r->condition, diagbib1_str(*r->condition),
+ r->u.v3Addinfo);
+ break;
+ }
+ }
+}
+
+void Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p)
+{
+ if (!m_stylesheet)
+ return;
+ xmlDocPtr xslt_doc = xmlParseFile(m_stylesheet);
+ xsltStylesheetPtr xsp;
+
+ xsp = xsltParseStylesheetDoc(xslt_doc);
+
+ int i;
+ for (i = 0; i < p->num_records; i++)
+ {
+ Z_NamePlusRecord *npr = p->records[i];
+ if (npr->which == Z_NamePlusRecord_databaseRecord)
+ {
+ Z_External *r = npr->u.databaseRecord;
+ if (r->which == Z_External_octet)
+ {
+ xmlDocPtr res, doc = xmlParseMemory(
+ (char*) r->u.octet_aligned->buf,
+ r->u.octet_aligned->len);
+
+ res = xsltApplyStylesheet(xsp, doc, 0);
+
+ xmlChar *out_buf;
+ int out_len;
+ xmlDocDumpMemory (res, &out_buf, &out_len);
+ p->records[i]->u.databaseRecord =
+ z_ext_record(odr_encode(), VAL_TEXT_XML,
+ (char*) out_buf, out_len);
+ xmlFreeDoc(doc);
+ xmlFreeDoc(res);
+ }
+ }
+ }
+ xsltFreeStylesheet(xsp);
+}
+
+void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p)
+{
+ int i;
+
+ yaz_marc_t mt = yaz_marc_create();
+ yaz_marc_xml(mt, YAZ_MARC_MARCXML);
+ for (i = 0; i < p->num_records; i++)
+ {
+ Z_NamePlusRecord *npr = p->records[i];
+ if (npr->which == Z_NamePlusRecord_databaseRecord)
+ {
+ Z_External *r = npr->u.databaseRecord;
+ if (r->which == Z_External_octet)
+ {
+ int rlen;
+ char *result;
+ if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
+ r->u.octet_aligned->len,
+ &result, &rlen))
+ {
+ yaz_iconv_t cd = yaz_iconv_open("UTF-8", "MARC-8");
+ WRBUF wrbuf = wrbuf_alloc();
+
+ char outbuf[120];
+ size_t inbytesleft = rlen;
+ const char *inp = result;
+ while (cd && inbytesleft)
+ {
+ size_t outbytesleft = sizeof(outbuf);
+ char *outp = outbuf;
+ size_t r;
+
+ r = yaz_iconv (cd, (char**) &inp,
+ &inbytesleft,
+ &outp, &outbytesleft);
+ if (r == (size_t) (-1))
+ {
+ int e = yaz_iconv_error(cd);
+ if (e != YAZ_ICONV_E2BIG)
+ {
+ yaz_log(LOG_WARN, "conversion failure");
+ break;
+ }
+ }
+ wrbuf_write(wrbuf, outbuf, outp - outbuf);
+ }
+ if (cd)
+ yaz_iconv_close(cd);
+
+ npr->u.databaseRecord = z_ext_record(odr_encode(),
+ VAL_TEXT_XML,
+ wrbuf_buf(wrbuf),
+ wrbuf_len(wrbuf));
+ wrbuf_free(wrbuf, 1);
+ }
+ }
+ }
+ }
+ yaz_marc_destroy(mt);
+}
+
+void Yaz_Proxy::logtime()
+{
+ if (m_time_tv.tv_sec)
+ {
+ struct timeval tv;
+ gettimeofday(&tv, 0);
+ long diff = (tv.tv_sec - m_time_tv.tv_sec)*1000000 +
+ (tv.tv_usec - m_time_tv.tv_usec);
+ if (diff >= 0)
+ yaz_log(LOG_LOG, "%sElapsed %ld.%03ld", m_session_str,
+ diff/1000000, (diff/1000)%1000);
+ }
+ m_time_tv.tv_sec = 0;
+ m_time_tv.tv_usec = 0;
+}
+
+int Yaz_Proxy::send_http_response(int code)
+{
+ ODR o = odr_encode();
+ const char *ctype = "text/xml";
+ Z_GDU *gdu = z_get_HTTP_Response(o, code);
+ Z_HTTP_Response *hres = gdu->u.HTTP_Response;
+ if (m_http_version)
+ hres->version = odr_strdup(o, m_http_version);
+ m_http_keepalive = 0;
+ if (m_log_mask & PROXY_LOG_REQ_CLIENT)
+ {
+ yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
+ gdu_name(gdu));
+ }
+ int len;
+ int r = send_GDU(gdu, &len);
+ logtime();
+ return r;
+}
+
+int Yaz_Proxy::send_srw_response(Z_SRW_PDU *srw_pdu)
+{
+ ODR o = odr_encode();
+ const char *ctype = "text/xml";
+ Z_GDU *gdu = z_get_HTTP_Response(o, 200);
+ Z_HTTP_Response *hres = gdu->u.HTTP_Response;
+ if (m_http_version)
+ hres->version = odr_strdup(o, m_http_version);
+ z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
+ if (m_http_keepalive)
+ z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
+
+ static Z_SOAP_Handler soap_handlers[2] = {
+#if HAVE_XSLT
+ {"http://www.loc.gov/zing/srw/", 0,
+ (Z_SOAP_fun) yaz_srw_codec},
+#endif
+ {0, 0, 0}
+ };
+
+ Z_SOAP *soap_package = (Z_SOAP*) odr_malloc(o, sizeof(Z_SOAP));
+ soap_package->which = Z_SOAP_generic;
+ soap_package->u.generic =
+ (Z_SOAP_Generic *) odr_malloc(o, sizeof(*soap_package->u.generic));
+ soap_package->u.generic->no = 0;
+ soap_package->u.generic->ns = soap_handlers[0].ns;
+ soap_package->u.generic->p = (void *) srw_pdu;
+ soap_package->ns = m_soap_ns;
+ int ret = z_soap_codec_enc(o, &soap_package,
+ &hres->content_buf, &hres->content_len,
+ soap_handlers, 0);
+ if (m_log_mask & PROXY_LOG_REQ_CLIENT)
+ {
+ yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
+ gdu_name(gdu));
+ }
+ int len;
+ int r = send_GDU(gdu, &len);
+ logtime();
+ return r;
+}
+
+int Yaz_Proxy::send_to_srw_client_error(int srw_error)
+{
+ ODR o = odr_encode();
+ Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
+ Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
+
+ srw_res->num_diagnostics = 1;
+ srw_res->diagnostics = (Z_SRW_diagnostic *)
+ odr_malloc(o, sizeof(*srw_res->diagnostics));
+ srw_res->diagnostics[0].code = odr_intdup(o, srw_error);
+ srw_res->diagnostics[0].details = 0;
+ return send_srw_response(srw_pdu);
+}
+
+int Yaz_Proxy::z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
+ Z_DefaultDiagFormat *ddf)
+{
+ int bib1_code = *ddf->condition;
+ if (bib1_code == 109)
+ return 404;
+ srw_res->num_diagnostics = 1;
+ srw_res->diagnostics = (Z_SRW_diagnostic *)
+ odr_malloc(o, sizeof(*srw_res->diagnostics));
+ srw_res->diagnostics[0].code =
+ odr_intdup(o, yaz_diag_bib1_to_srw(*ddf->condition));
+ srw_res->diagnostics[0].details = ddf->u.v2Addinfo;
+ return 0;
+}
+
+int Yaz_Proxy::send_to_srw_client_ok(int hits, Z_Records *records, int start)
+{
+ ODR o = odr_encode();
+ Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
+ Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
+
+ srw_res->numberOfRecords = odr_intdup (o, hits);
+ if (records && records->which == Z_Records_DBOSD)
+ {
+ srw_res->num_records =
+ records->u.databaseOrSurDiagnostics->num_records;
+ int i;
+ srw_res->records = (Z_SRW_record *)
+ odr_malloc(o, srw_res->num_records * sizeof(Z_SRW_record));
+ for (i = 0; i < srw_res->num_records; i++)
+ {
+ Z_NamePlusRecord *npr = records->u.databaseOrSurDiagnostics->records[i];
+ if (npr->which != Z_NamePlusRecord_databaseRecord)
+ {
+ srw_res->records[i].recordSchema = "diagnostic";
+ srw_res->records[i].recordPacking = m_s2z_packing;
+ srw_res->records[i].recordData_buf = "67";
+ srw_res->records[i].recordData_len = 2;
+ srw_res->records[i].recordPosition = odr_intdup(o, i+start);
+ continue;
+ }
+ Z_External *r = npr->u.databaseRecord;
+ oident *ent = oid_getentbyoid(r->direct_reference);
+ if (r->which == Z_External_octet && ent->value == VAL_TEXT_XML)
+ {
+ srw_res->records[i].recordSchema = m_schema;
+ srw_res->records[i].recordPacking = m_s2z_packing;
+ srw_res->records[i].recordData_buf = (char*)
+ r->u.octet_aligned->buf;
+ srw_res->records[i].recordData_len = r->u.octet_aligned->len;
+ srw_res->records[i].recordPosition = odr_intdup(o, i+start);
+ }
+ else
+ {
+ srw_res->records[i].recordSchema = "diagnostic";
+ srw_res->records[i].recordPacking = m_s2z_packing;
+ srw_res->records[i].recordData_buf = "67";
+ srw_res->records[i].recordData_len = 2;
+ srw_res->records[i].recordPosition = odr_intdup(o, i+start);
+ }
+ }
+ }
+ if (records && records->which == Z_Records_NSD)
+ {
+ int http_code;
+ http_code = z_to_srw_diag(odr_encode(), srw_res,
+ records->u.nonSurrogateDiagnostic);
+ if (http_code)
+ return send_http_response(http_code);
+ }
+ return send_srw_response(srw_pdu);
+
+}
+
+int Yaz_Proxy::send_srw_explain()
+{
+ Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
+ Z_SRW_explainResponse *er = res->u.explain_response;
+
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+ if (cfg)
+ {
+ int len;
+ assert (m_proxyTarget);
+ char *b = cfg->get_explain(odr_encode(), 0 /* target */,
+ 0 /* db */, &len);
+ if (b)
+ {
+ er->record.recordData_buf = b;
+ er->record.recordData_len = len;
+ er->record.recordPacking = m_s2z_packing;
+ }
+ }
+ return send_srw_response(res);
+}
+
+int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu, int *len)
+{
+ if (m_http_version)
+ {
+ if (apdu->which == Z_APDU_initResponse)
+ {
+ Z_InitResponse *res = apdu->u.initResponse;
+ if (*res->result == 0)
+ {
+ send_to_srw_client_error(3);
+ }
+ else if (!m_s2z_search_apdu)
+ {
+ send_srw_explain();
+ }
+ else
+ {
+ handle_incoming_Z_PDU(m_s2z_search_apdu);
+ }
+ }
+ else if (m_s2z_search_apdu && apdu->which == Z_APDU_searchResponse)
+ {
+ m_s2z_search_apdu = 0;
+ Z_SearchResponse *res = apdu->u.searchResponse;
+ m_s2z_hit_count = *res->resultCount;
+ if (res->records && res->records->which == Z_Records_NSD)
+ {
+ send_to_srw_client_ok(0, res->records, 1);
+ }
+ else if (m_s2z_present_apdu)
+ {
+ handle_incoming_Z_PDU(m_s2z_present_apdu);
+ }
+ else
+ {
+ send_to_srw_client_ok(m_s2z_hit_count, res->records, 1);
+ }
+ }
+ else if (m_s2z_present_apdu && apdu->which == Z_APDU_presentResponse)
+ {
+ int start =
+ *m_s2z_present_apdu->u.presentRequest->resultSetStartPoint;
+
+ m_s2z_present_apdu = 0;
+ Z_PresentResponse *res = apdu->u.presentResponse;
+ send_to_srw_client_ok(m_s2z_hit_count, res->records, start);
+ }
+ }
+ else
+ {
+ if (m_log_mask & PROXY_LOG_REQ_CLIENT)
+ yaz_log (LOG_LOG, "%sSending %s to client", m_session_str,
+ apdu_name(apdu));
+ int r = send_Z_PDU(apdu, len);
+ logtime();
+ return r;
+ }
+ return 0;
+}
+
+int Yaz_Proxy::send_to_client(Z_APDU *apdu)
+{
+ int len = 0;
+ int kill_session = 0;
+ if (apdu->which == Z_APDU_searchResponse)
+ {
+ Z_SearchResponse *sr = apdu->u.searchResponse;
+ Z_Records *p = sr->records;
+ if (p && p->which == Z_Records_NSD)
+ {
+ Z_DiagRec dr, *dr_p = &dr;
+ dr.which = Z_DiagRec_defaultFormat;
+ dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
+
+ *sr->searchStatus = 0;
+ display_diagrecs(&dr_p, 1);
+ }
+ else
+ {
+ if (p && p->which == Z_Records_DBOSD)
+ {
+ if (m_marcxml_flag)
+ convert_to_marcxml(p->u.databaseOrSurDiagnostics);
+ convert_xsl(p->u.databaseOrSurDiagnostics);
+ }
+ if (sr->resultCount)
+ {
+ yaz_log(LOG_LOG, "%s%d hits", m_session_str,
+ *sr->resultCount);
+ if (*sr->resultCount < 0)
+ {
+ m_invalid_session = 1;
+ kill_session = 1;
+
+ *sr->searchStatus = 0;
+ sr->records =
+ create_nonSurrogateDiagnostics(odr_encode(), 2, 0);
+ *sr->resultCount = 0;
+ }
+ }
+ }
+ }
+ else if (apdu->which == Z_APDU_presentResponse)
+ {
+ Z_PresentResponse *sr = apdu->u.presentResponse;
+ Z_Records *p = sr->records;
+ if (p && p->which == Z_Records_NSD)
+ {
+ Z_DiagRec dr, *dr_p = &dr;
+ dr.which = Z_DiagRec_defaultFormat;
+ dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
+ if (*sr->presentStatus == Z_PresentStatus_success)
+ *sr->presentStatus = Z_PresentStatus_failure;
+ display_diagrecs(&dr_p, 1);
+ }
+ if (p && p->which == Z_Records_DBOSD)
+ {
+ if (m_marcxml_flag)
+ convert_to_marcxml(p->u.databaseOrSurDiagnostics);
+ convert_xsl(p->u.databaseOrSurDiagnostics);
+ }
+ }
+ int r = send_PDU_convert(apdu, &len);
+ if (r)
+ return r;
+ m_bytes_sent += len;
+ m_bw_stat.add_bytes(len);
+ if (kill_session)
+ {
+ delete m_client;
+ m_client = 0;
+ m_parent->pre_init();
+ }
+ if (m_http_version)
+ {
+ if (!m_http_keepalive)
+ {
+#if 1
+ timeout(1);
+#else
+ shutdown();
+ return -1;
+#endif
+ }
+ }
+ return r;
+}
+
+int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
+{
+ int len = 0;
+ const char *apdu_name_tmp = apdu_name(apdu);
+ int r = send_Z_PDU(apdu, &len);
+ if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
+ yaz_log (LOG_LOG, "%sSending %s to %s %d bytes",
+ get_session_str(),
+ apdu_name_tmp, get_hostname(), len);
+ m_bytes_sent += len;
+ return r;
+}
+
+Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
+{
+ if (apdu->which == Z_APDU_presentRequest)
+ {
+ Z_PresentRequest *pr = apdu->u.presentRequest;
+ int toget = *pr->numberOfRecordsRequested;
+ int start = *pr->resultSetStartPoint;
+
+ yaz_log(LOG_LOG, "%sPresent %s %d+%d", m_session_str,
+ pr->resultSetId, start, toget);
+
+ if (*m_parent->m_optimize == '0')
+ return apdu;
+
+ if (!m_client->m_last_resultSetId)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+ new_apdu->u.presentResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), 30,
+ pr->resultSetId);
+ send_to_client(new_apdu);
+ return 0;
+ }
+ if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
+ {
+ if (start+toget-1 > m_client->m_last_resultCount)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+ new_apdu->u.presentResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), 13, 0);
+ send_to_client(new_apdu);
+ return 0;
+ }
+ Z_NamePlusRecordList *npr;
+ if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
+ pr->preferredRecordSyntax,
+ pr->recordComposition))
+ {
+ yaz_log (LOG_LOG, "%sReturned cached records for present request",
+ m_session_str);
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+ new_apdu->u.presentResponse->referenceId = pr->referenceId;
+
+ new_apdu->u.presentResponse->numberOfRecordsReturned
+ = odr_intdup(odr_encode(), toget);
+
+ new_apdu->u.presentResponse->records = (Z_Records*)
+ odr_malloc(odr_encode(), sizeof(Z_Records));
+ new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
+ new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
+ new_apdu->u.presentResponse->nextResultSetPosition =
+ odr_intdup(odr_encode(), start+toget);
+
+ send_to_client(new_apdu);
+ return 0;
+ }
+ }
+ }
+
+ if (apdu->which != Z_APDU_searchRequest)
+ return apdu;
+ Z_SearchRequest *sr = apdu->u.searchRequest;
+ Yaz_Z_Query *this_query = new Yaz_Z_Query;
+ Yaz_Z_Databases this_databases;
+
+ this_databases.set(sr->num_databaseNames, (const char **)
+ sr->databaseNames);
+
+ this_query->set_Z_Query(sr->query);
+
+ char query_str[120];
+ this_query->print(query_str, sizeof(query_str)-1);
+ yaz_log(LOG_LOG, "%sSearch %s", m_session_str, query_str);
+
+ if (*m_parent->m_optimize != '0' &&
+ m_client->m_last_ok && m_client->m_last_query &&
+ m_client->m_last_query->match(this_query) &&
+ !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
+ m_client->m_last_databases.match(this_databases))
+ {
+ delete this_query;
+ if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
+ m_client->m_last_resultCount < *sr->largeSetLowerBound)
+ {
+ Z_NamePlusRecordList *npr;
+ int toget = *sr->mediumSetPresentNumber;
+ Z_RecordComposition *comp = 0;
+
+ if (toget > m_client->m_last_resultCount)
+ toget = m_client->m_last_resultCount;
+
+ if (sr->mediumSetElementSetNames)
+ {
+ comp = (Z_RecordComposition *)
+ odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
+ comp->which = Z_RecordComp_simple;
+ comp->u.simple = sr->mediumSetElementSetNames;
+ }
+
+ if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
+ sr->preferredRecordSyntax, comp))
+ {
+ yaz_log (LOG_LOG, "%sReturned cached records for medium set",
+ m_session_str);
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->resultCount =
+ &m_client->m_last_resultCount;
+
+ new_apdu->u.searchResponse->numberOfRecordsReturned
+ = odr_intdup(odr_encode(), toget);
+
+ new_apdu->u.searchResponse->presentStatus =
+ odr_intdup(odr_encode(), Z_PresentStatus_success);
+ new_apdu->u.searchResponse->records = (Z_Records*)
+ odr_malloc(odr_encode(), sizeof(Z_Records));
+ new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
+ new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
+ new_apdu->u.searchResponse->nextResultSetPosition =
+ odr_intdup(odr_encode(), toget+1);
+ send_to_client(new_apdu);
+ return 0;
+ }
+ else
+ {
+ // medium Set
+ // send present request (medium size)
+ yaz_log (LOG_LOG, "%sOptimizing search for medium set",
+ m_session_str);
+
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
+ Z_PresentRequest *pr = new_apdu->u.presentRequest;
+ pr->referenceId = sr->referenceId;
+ pr->resultSetId = sr->resultSetName;
+ pr->preferredRecordSyntax = sr->preferredRecordSyntax;
+ *pr->numberOfRecordsRequested = toget;
+ pr->recordComposition = comp;
+ m_client->m_sr_transform = 1;
+ return new_apdu;
+ }
+ }
+ else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
+ m_client->m_last_resultCount <= 0)
+ {
+ // large set. Return pseudo-search response immediately
+ yaz_log (LOG_LOG, "%sOptimizing search for large set",
+ m_session_str);
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->resultCount =
+ &m_client->m_last_resultCount;
+ send_to_client(new_apdu);
+ return 0;
+ }
+ else
+ {
+ Z_NamePlusRecordList *npr;
+ int toget = m_client->m_last_resultCount;
+ Z_RecordComposition *comp = 0;
+ // small set
+ // send a present request (small set)
+
+ if (sr->smallSetElementSetNames)
+ {
+ comp = (Z_RecordComposition *)
+ odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
+ comp->which = Z_RecordComp_simple;
+ comp->u.simple = sr->smallSetElementSetNames;
+ }
+
+ if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
+ sr->preferredRecordSyntax, comp))
+ {
+ yaz_log (LOG_LOG, "%sReturned cached records for small set",
+ m_session_str);
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->resultCount =
+ &m_client->m_last_resultCount;
+
+ new_apdu->u.searchResponse->numberOfRecordsReturned
+ = odr_intdup(odr_encode(), toget);
+
+ new_apdu->u.searchResponse->presentStatus =
+ odr_intdup(odr_encode(), Z_PresentStatus_success);
+ new_apdu->u.searchResponse->records = (Z_Records*)
+ odr_malloc(odr_encode(), sizeof(Z_Records));
+ new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
+ new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
+ new_apdu->u.searchResponse->nextResultSetPosition =
+ odr_intdup(odr_encode(), toget+1);
+ send_to_client(new_apdu);
+ return 0;
+ }
+ else
+ {
+ yaz_log (LOG_LOG, "%sOptimizing search for small set",
+ m_session_str);
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
+ Z_PresentRequest *pr = new_apdu->u.presentRequest;
+ pr->referenceId = sr->referenceId;
+ pr->resultSetId = sr->resultSetName;
+ pr->preferredRecordSyntax = sr->preferredRecordSyntax;
+ *pr->numberOfRecordsRequested = toget;
+ pr->recordComposition = comp;
+ m_client->m_sr_transform = 1;
+ return new_apdu;
+ }
+ }
+ }
+ else // query doesn't match
+ {
+ delete m_client->m_last_query;
+ m_client->m_last_query = this_query;
+ m_client->m_last_ok = 0;
+ m_client->m_cache.clear();
+ m_client->m_resultSetStartPoint = 0;
+
+ xfree (m_client->m_last_resultSetId);
+ m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
+
+ m_client->m_last_databases.set(sr->num_databaseNames,
+ (const char **) sr->databaseNames);
+ }
+ return apdu;
+}
+
+
+void Yaz_Proxy::inc_request_no()
+{
+ char *cp = strchr(m_session_str, ' ');
+ m_request_no++;
+ if (cp)
+ sprintf(cp+1, "%d ", m_request_no);
+}
+
+void Yaz_Proxy::recv_GDU(Z_GDU *apdu, int len)
+{
+ inc_request_no();
+
+ m_bytes_recv += len;
+
+ if (m_log_mask & PROXY_LOG_APDU_CLIENT)
+ yaz_log (LOG_DEBUG, "%sReceiving %s from client %d bytes",
+ m_session_str, gdu_name(apdu), len);
+
+ if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
+ shutdown();
+
+ m_bw_stat.add_bytes(len);
+ m_pdu_stat.add_bytes(1);
+
+ gettimeofday(&m_time_tv, 0);
+
+ int bw_total = m_bw_stat.get_total();
+ int pdu_total = m_pdu_stat.get_total();
+
+ int reduce = 0;
+ if (m_bw_max)
+ {
+ if (bw_total > m_bw_max)
+ {
+ reduce = (bw_total/m_bw_max);
+ }
+ }
+ if (m_pdu_max)
+ {
+ if (pdu_total > m_pdu_max)
+ {
+ int nreduce = (m_pdu_max >= 60) ? 1 : 60/m_pdu_max;
+ reduce = (reduce > nreduce) ? reduce : nreduce;
+ }
+ }
+ if (reduce)
+ {
+ yaz_log(LOG_LOG, "%sdelay=%d bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
+ m_session_str, reduce, bw_total, pdu_total,
+ m_bw_max, m_pdu_max);
+
+ m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
+ timeout(reduce); // call us reduce seconds later
+ }
+ else if (apdu->which == Z_GDU_Z3950)
+ handle_incoming_Z_PDU(apdu->u.z3950);
+ else if (apdu->which == Z_GDU_HTTP_Request)
+ handle_incoming_HTTP(apdu->u.HTTP_Request);
+}
+
+void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
+{
+ if (m_max_record_retrieve)
+ {
+ if (apdu->which == Z_APDU_presentRequest)
+ {
+ Z_PresentRequest *pr = apdu->u.presentRequest;
+ if (pr->numberOfRecordsRequested &&
+ *pr->numberOfRecordsRequested > m_max_record_retrieve)
+ *pr->numberOfRecordsRequested = m_max_record_retrieve;
+ }
+ }
+}
+
+Z_Records *Yaz_Proxy::create_nonSurrogateDiagnostics(ODR odr,
+ int error,
+ const char *addinfo)
+{
+ Z_Records *rec = (Z_Records *)
+ odr_malloc (odr, sizeof(*rec));
+ int *err = (int *)
+ odr_malloc (odr, sizeof(*err));
+ Z_DiagRec *drec = (Z_DiagRec *)
+ odr_malloc (odr, sizeof(*drec));
+ Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
+ odr_malloc (odr, sizeof(*dr));
+ *err = error;
+ rec->which = Z_Records_NSD;
+ rec->u.nonSurrogateDiagnostic = dr;
+ dr->diagnosticSetId =
+ yaz_oidval_to_z3950oid (odr, CLASS_DIAGSET, VAL_BIB1);
+ dr->condition = err;
+ dr->which = Z_DefaultDiagFormat_v2Addinfo;
+ dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
+ return rec;