+++ /dev/null
-/*
- * Copyright (c) 1998-2004, Index Data.
- * See the file LICENSE for details.
- *
- * $Id: yaz-proxy.cpp,v 1.110 2004-03-17 10:49:22 adam Exp $
- */
-
-#include <unistd.h>
-#include <assert.h>
-#include <time.h>
-#include <sys/types.h>
-#include <fcntl.h>
-
-#include <yaz/srw.h>
-#include <yaz/marcdisp.h>
-#include <yaz/yaz-iconv.h>
-#include <yaz/log.h>
-#include <yaz/diagbib1.h>
-#include <yaz++/proxy.h>
-#include <yaz/pquery.h>
-
-static const char *apdu_name(Z_APDU *apdu)
-{
- switch (apdu->which)
- {
- case Z_APDU_initRequest:
- return "initRequest";
- case Z_APDU_initResponse:
- return "initResponse";
- case Z_APDU_searchRequest:
- return "searchRequest";
- case Z_APDU_searchResponse:
- return "searchResponse";
- case Z_APDU_presentRequest:
- return "presentRequest";
- case Z_APDU_presentResponse:
- return "presentResponse";
- case Z_APDU_deleteResultSetRequest:
- return "deleteResultSetRequest";
- case Z_APDU_deleteResultSetResponse:
- return "deleteResultSetResponse";
- case Z_APDU_scanRequest:
- return "scanRequest";
- case Z_APDU_scanResponse:
- return "scanResponse";
- case Z_APDU_sortRequest:
- return "sortRequest";
- case Z_APDU_sortResponse:
- return "sortResponse";
- case Z_APDU_extendedServicesRequest:
- return "extendedServicesRequest";
- case Z_APDU_extendedServicesResponse:
- return "extendedServicesResponse";
- case Z_APDU_close:
- return "close";
- }
- return "other";
-}
-
-static const char *gdu_name(Z_GDU *gdu)
-{
- switch(gdu->which)
- {
- case Z_GDU_Z3950:
- return apdu_name(gdu->u.z3950);
- case Z_GDU_HTTP_Request:
- return "HTTP Request";
- case Z_GDU_HTTP_Response:
- return "HTTP Response";
- }
- return "Unknown request/response";
-}
-
-Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable,
- Yaz_Proxy *parent) :
- Yaz_Z_Assoc(the_PDU_Observable), m_bw_stat(60), m_pdu_stat(60)
-{
- m_PDU_Observable = the_PDU_Observable;
- m_client = 0;
- m_parent = parent;
- m_clientPool = 0;
- m_seqno = 1;
- m_keepalive_limit_bw = 500000;
- m_keepalive_limit_pdu = 1000;
- m_proxyTarget = 0;
- m_default_target = 0;
- m_proxy_authentication = 0;
- m_max_clients = 150;
- m_log_mask = 0;
- m_seed = time(0);
- m_client_idletime = 600;
- m_target_idletime = 600;
- m_optimize = xstrdup ("1");
- strcpy(m_session_str, "0 ");
- m_session_no=0;
- m_bytes_sent = 0;
- m_bytes_recv = 0;
- m_bw_hold_PDU = 0;
- m_bw_max = 0;
- m_pdu_max = 0;
- m_max_record_retrieve = 0;
- m_reconfig_flag = 0;
- m_config_fname = 0;
- m_request_no = 0;
- m_invalid_session = 0;
- m_referenceId = 0;
- m_referenceId_mem = nmem_create();
- m_config = 0;
- m_marcxml_flag = 0;
- m_stylesheet_xsp = 0;
- m_stylesheet_nprl = 0;
- m_s2z_stylesheet = 0;
- m_s2z_database = 0;
- m_schema = 0;
- m_initRequest_apdu = 0;
- m_initRequest_mem = 0;
- m_initRequest_preferredMessageSize = 0;
- m_initRequest_maximumRecordSize = 0;
- m_initRequest_options = 0;
- m_initRequest_version = 0;
- m_apdu_invalid_session = 0;
- m_mem_invalid_session = 0;
- m_s2z_odr_init = 0;
- m_s2z_odr_search = 0;
- m_s2z_init_apdu = 0;
- m_s2z_search_apdu = 0;
- m_s2z_present_apdu = 0;
- m_http_keepalive = 0;
- m_http_version = 0;
- m_soap_ns = 0;
- m_s2z_packing = Z_SRW_recordPacking_string;
- m_time_tv.tv_sec = 0;
- m_time_tv.tv_usec = 0;
- if (!m_parent)
- low_socket_open();
-}
-
-Yaz_Proxy::~Yaz_Proxy()
-{
- 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);
- nmem_destroy(m_referenceId_mem);
-
- xfree (m_proxyTarget);
- xfree (m_default_target);
- xfree (m_proxy_authentication);
- xfree (m_optimize);
-
- if (m_stylesheet_xsp)
- xsltFreeStylesheet(m_stylesheet_xsp);
-
- 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);
- if (!m_parent)
- low_socket_close();
- 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];
- int zurl_in_spare[MAX_ZURL_PLEX];
- Yaz_ProxyClient *c;
- int i;
-
- for (i = 0; i<MAX_ZURL_PLEX; i++)
- {
- zurl_in_use[i] = 0;
- zurl_in_spare[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]++;
- if (c->m_cookie == 0 && c->m_server == 0 && c->m_waiting == 0)
- zurl_in_spare[i]++;
- }
- }
- int min_use = 100000;
- int spare_for_min = 0;
- int max_spare = 0;
- const char *ret_min = 0;
- const char *ret_spare = 0;
- for (i = 0; url[i]; i++)
- {
- yaz_log(LOG_DEBUG, "%szurl=%s use=%d spare=%d",
- m_session_str, url[i], zurl_in_use[i], zurl_in_spare[i]);
- if (min_use > zurl_in_use[i])
- {
- ret_min = url[i];
- min_use = zurl_in_use[i];
- spare_for_min = zurl_in_spare[i];
- }
- if (max_spare < zurl_in_spare[i])
- {
- ret_spare = url[i];
- max_spare = zurl_in_spare[i];
- }
- }
- // use the one with minimum connections if spare is > 3
- if (spare_for_min > 3)
- return ret_min;
- // use one with most spares (if any)
- if (max_spare > 0)
- return ret_spare;
- return ret_min;
-}
-
-Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
- const char *proxy_host)
-{
- assert (m_parent);
- Yaz_Proxy *parent = m_parent;
- 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 %d %s",
- m_session_str, parent->m_seqno, 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, "%sno init request as first PDU", m_session_str);
- 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 %d Destroy %d",
- m_session_str, parent->m_max_clients, 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 %d Reuse %d %d %s",
- m_session_str, parent->m_max_clients,
- 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;
- }
- }
-}
-
-int Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p, Z_APDU *apdu)
-{
- if (!m_stylesheet_xsp || p->num_records <= 0)
- return 0; /* no XSLT to be done ... */
-
- m_stylesheet_offset = 0;
- m_stylesheet_nprl = p;
- m_stylesheet_apdu = apdu;
- timeout(0);
- return 1;
-}
-
-void Yaz_Proxy::convert_xsl_delay()
-{
- Z_NamePlusRecord *npr = m_stylesheet_nprl->records[m_stylesheet_offset];
- if (npr->which == Z_NamePlusRecord_databaseRecord)
- {
- Z_External *r = npr->u.databaseRecord;
- if (r->which == Z_External_octet)
- {
-#if 0
- fwrite((char*) r->u.octet_aligned->buf, 1, r->u.octet_aligned->len, stdout);
-#endif
- xmlDocPtr res, doc = xmlParseMemory(
- (char*) r->u.octet_aligned->buf,
- r->u.octet_aligned->len);
-
-
- yaz_log(LOG_LOG, "%sXSLT convert %d",
- m_session_str, m_stylesheet_offset);
- res = xsltApplyStylesheet(m_stylesheet_xsp, doc, 0);
-
- if (res)
- {
- xmlChar *out_buf;
- int out_len;
- xmlDocDumpFormatMemory (res, &out_buf, &out_len, 1);
-
- m_stylesheet_nprl->records[m_stylesheet_offset]->
- u.databaseRecord =
- z_ext_record(odr_encode(), VAL_TEXT_XML,
- (char*) out_buf, out_len);
- xmlFree(out_buf);
- xmlFreeDoc(res);
- }
-
- xmlFreeDoc(doc);
- }
- }
- m_stylesheet_offset++;
- if (m_stylesheet_offset == m_stylesheet_nprl->num_records)
- {
- m_stylesheet_nprl = 0;
- if (m_stylesheet_xsp)
- xsltFreeStylesheet(m_stylesheet_xsp);
- m_stylesheet_xsp = 0;
- timeout(m_client_idletime);
- send_PDU_convert(m_stylesheet_apdu);
- }
- else
- timeout(0);
-}
-
-void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p)
-{
- int i;
-
- yaz_iconv_t cd = yaz_iconv_open("UTF-8", "MARC-8");
- yaz_marc_t mt = yaz_marc_create();
- yaz_marc_xml(mt, YAZ_MARC_MARCXML);
- yaz_marc_iconv(mt, cd);
- 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))
- {
- npr->u.databaseRecord = z_ext_record(odr_encode(),
- VAL_TEXT_XML,
- result, rlen);
- }
- }
- }
- }
- if (cd)
- yaz_iconv_close(cd);
- 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();
- 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);
- if (m_http_keepalive)
- z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
- else
- timeout(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);
- m_bytes_sent += len;
- m_bw_stat.add_bytes(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");
- else
- timeout(0);
-
- 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;
- z_soap_codec_enc_xsl(o, &soap_package,
- &hres->content_buf, &hres->content_len,
- soap_handlers, 0, m_s2z_stylesheet);
- 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);
- m_bytes_sent += len;
- m_bw_stat.add_bytes(len);
- logtime();
- return r;
-}
-
-int Yaz_Proxy::send_to_srw_client_error(int srw_error, const char *add)
-{
- 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));
- yaz_mk_std_diagnostic(o, srw_res->diagnostics, srw_error, add);
- 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));
- yaz_mk_std_diagnostic(o, srw_res->diagnostics,
- yaz_diag_bib1_to_srw(*ddf->condition),
- 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_response(Z_SRW_diagnostic *diagnostics,
- int num_diagnostics)
-{
- Yaz_ProxyConfig *cfg = check_reconfigure();
- if (cfg)
- {
- int len;
- char *b = cfg->get_explain(odr_encode(), 0 /* target */,
- m_s2z_database, &len);
- if (b)
- {
- Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
- Z_SRW_explainResponse *er = res->u.explain_response;
-
- er->record.recordData_buf = b;
- er->record.recordData_len = len;
- er->record.recordPacking = m_s2z_packing;
- er->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
-
- er->diagnostics = diagnostics;
- er->num_diagnostics = num_diagnostics;
- return send_srw_response(res);
- }
- }
- return send_http_response(404);
-}
-
-int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu)
-{
- 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, 0);
- }
- else if (!m_s2z_search_apdu)
- {
- send_srw_explain_response(0, 0);
- }
- 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 && m_s2z_hit_count > 0)
- {
- // adjust
- Z_PresentRequest *pr = m_s2z_present_apdu->u.presentRequest;
-
- if (*pr->resultSetStartPoint <= m_s2z_hit_count)
- {
- if (*pr->numberOfRecordsRequested+ *pr->resultSetStartPoint
- > m_s2z_hit_count)
- *pr->numberOfRecordsRequested =
- 1 + m_s2z_hit_count - *pr->resultSetStartPoint;
- }
- handle_incoming_Z_PDU(m_s2z_present_apdu);
- }
- else
- {
- m_s2z_present_apdu = 0;
- 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
- {
- int len = 0;
- 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);
- m_bytes_sent += len;
- m_bw_stat.add_bytes(len);
- logtime();
- return r;
- }
- return 0;
-}
-
-int Yaz_Proxy::send_to_client(Z_APDU *apdu)
-{
- int kill_session = 0;
- Z_ReferenceId **new_id = get_referenceIdP(apdu);
-
- if (new_id)
- *new_id = m_referenceId;
-
- 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);
- if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
- return 0;
-
- }
- 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);
- if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
- return 0;
- }
- }
- else if (apdu->which == Z_APDU_initResponse)
- {
- if (m_initRequest_options)
- {
- Z_Options *nopt =
- (Odr_bitmask *)odr_malloc(odr_encode(),
- sizeof(Odr_bitmask));
- ODR_MASK_ZERO(nopt);
-
- int i;
- for (i = 0; i<24; i++)
- if (ODR_MASK_GET(m_initRequest_options, i) &&
- ODR_MASK_GET(apdu->u.initResponse->options, i))
- ODR_MASK_SET(nopt, i);
- apdu->u.initResponse->options = nopt;
- }
- if (m_initRequest_version)
- {
- Z_ProtocolVersion *nopt =
- (Odr_bitmask *)odr_malloc(odr_encode(),
- sizeof(Odr_bitmask));
- ODR_MASK_ZERO(nopt);
-
- int i;
- for (i = 0; i<8; i++)
- if (ODR_MASK_GET(m_initRequest_version, i) &&
- ODR_MASK_GET(apdu->u.initResponse->protocolVersion, i))
- ODR_MASK_SET(nopt, i);
- apdu->u.initResponse->protocolVersion = nopt;
- }
- apdu->u.initResponse->preferredMessageSize =
- odr_intdup(odr_encode(),
- m_client->m_initResponse_preferredMessageSize >
- m_initRequest_preferredMessageSize ?
- m_initRequest_preferredMessageSize :
- m_client->m_initResponse_preferredMessageSize);
- apdu->u.initResponse->maximumRecordSize =
- odr_intdup(odr_encode(),
- m_client->m_initResponse_maximumRecordSize >
- m_initRequest_maximumRecordSize ?
- m_initRequest_maximumRecordSize :
- m_client->m_initResponse_maximumRecordSize);
- }
- int r = send_PDU_convert(apdu);
- if (r)
- return r;
- if (kill_session)
- {
- delete m_client;
- m_client = 0;
- m_parent->pre_init();
- }
- 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_REQ_CLIENT)
- yaz_log (LOG_LOG, "%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;
-}
-
-Z_APDU *Yaz_Proxy::handle_query_transformation(Z_APDU *apdu)
-{
- if (apdu->which == Z_APDU_searchRequest &&
- apdu->u.searchRequest->query &&
- apdu->u.searchRequest->query->which == Z_Query_type_104 &&
- apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
- {
- Z_RPNQuery *rpnquery = 0;
- Z_SearchRequest *sr = apdu->u.searchRequest;
- char *addinfo = 0;
-
- yaz_log(LOG_LOG, "%sCQL: %s", m_session_str,
- sr->query->u.type_104->u.cql);
-
- int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
- &rpnquery, odr_encode(),
- &addinfo);
- if (r == -3)
- yaz_log(LOG_LOG, "%sNo CQL to RPN table", m_session_str);
- else if (r)
- {
- yaz_log(LOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
- Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
-
- new_apdu->u.searchResponse->referenceId = sr->referenceId;
- new_apdu->u.searchResponse->records =
- create_nonSurrogateDiagnostics(odr_encode(),
- yaz_diag_srw_to_bib1(r),
- addinfo);
- *new_apdu->u.searchResponse->searchStatus = 0;
-
- send_to_client(new_apdu);
-
- return 0;
- }
- else
- {
- sr->query->which = Z_Query_type_1;
- sr->query->u.type_1 = rpnquery;
- }
- return apdu;
- }
- return apdu;
-}
-
-Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
-{
- if (apdu->which == Z_APDU_searchRequest)
- {
- Z_SearchRequest *sr = apdu->u.searchRequest;
- int err = 0;
- char *addinfo = 0;
-
- Yaz_ProxyConfig *cfg = check_reconfigure();
- if (cfg)
- err = cfg->check_query(odr_encode(), m_default_target,
- sr->query, &addinfo);
- if (err)
- {
- Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
-
- new_apdu->u.searchResponse->referenceId = sr->referenceId;
- new_apdu->u.searchResponse->records =
- create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
- *new_apdu->u.searchResponse->searchStatus = 0;
-
- send_to_client(new_apdu);
-
- return 0;
- }
- }
- return apdu;
-}
-
-Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
-{
- m_marcxml_flag = 0;
- if (apdu->which == Z_APDU_searchRequest)
- {
- Z_SearchRequest *sr = apdu->u.searchRequest;
- int err = 0;
- char *addinfo = 0;
- Yaz_ProxyConfig *cfg = check_reconfigure();
-
- Z_RecordComposition rc_temp, *rc = 0;
- if (sr->smallSetElementSetNames)
- {
- rc_temp.which = Z_RecordComp_simple;
- rc_temp.u.simple = sr->smallSetElementSetNames;
- rc = &rc_temp;
- }
-
- char *stylesheet_name = 0;
- if (cfg)
- err = cfg->check_syntax(odr_encode(),
- m_default_target,
- sr->preferredRecordSyntax, rc,
- &addinfo, &stylesheet_name, &m_schema);
- if (stylesheet_name)
- {
- m_parent->low_socket_close();
-
- if (m_stylesheet_xsp)
- xsltFreeStylesheet(m_stylesheet_xsp);
-
- m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
- stylesheet_name);
- m_stylesheet_offset = 0;
- xfree(stylesheet_name);
-
- m_parent->low_socket_open();
- }
- if (err == -1)
- {
- sr->preferredRecordSyntax =
- yaz_oidval_to_z3950oid(odr_encode(), CLASS_RECSYN, VAL_USMARC);
- m_marcxml_flag = 1;
- }
- else if (err)
- {
- Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
-
- new_apdu->u.searchResponse->referenceId = sr->referenceId;
- new_apdu->u.searchResponse->records =
- create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
- *new_apdu->u.searchResponse->searchStatus = 0;
-
- send_to_client(new_apdu);
-
- return 0;
- }
- }
- else if (apdu->which == Z_APDU_presentRequest)
- {
- Z_PresentRequest *pr = apdu->u.presentRequest;
- int err = 0;
- char *addinfo = 0;
- Yaz_ProxyConfig *cfg = check_reconfigure();
-
- char *stylesheet_name = 0;
- if (cfg)
- err = cfg->check_syntax(odr_encode(), m_default_target,
- pr->preferredRecordSyntax,
- pr->recordComposition,
- &addinfo, &stylesheet_name, &m_schema);
- if (stylesheet_name)
- {
- m_parent->low_socket_close();
-
- if (m_stylesheet_xsp)
- xsltFreeStylesheet(m_stylesheet_xsp);
-
- m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
- stylesheet_name);
- m_stylesheet_offset = 0;
- xfree(stylesheet_name);
-
- m_parent->low_socket_open();
- }
- if (err == -1)
- {
- pr->preferredRecordSyntax =
- yaz_oidval_to_z3950oid(odr_decode(), CLASS_RECSYN, VAL_USMARC);
- m_marcxml_flag = 1;
- }
- else if (err)
- {
- Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
-
- new_apdu->u.presentResponse->referenceId = pr->referenceId;
- new_apdu->u.presentResponse->records =
- create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
- *new_apdu->u.presentResponse->presentStatus =
- Z_PresentStatus_failure;
-
- send_to_client(new_apdu);
-
- return 0;
- }
- }
- return apdu;
-}
-
-Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
-{
- if (!schema)
- return 0;
- Z_ElementSetNames *esn = (Z_ElementSetNames *)
- odr_malloc(o, sizeof(Z_ElementSetNames));
- esn->which = Z_ElementSetNames_generic;
- esn->u.generic = odr_strdup(o, schema);
- return esn;
-}
-
-void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
-{
- if (m_s2z_odr_init)
- {
- odr_destroy(m_s2z_odr_init);
- m_s2z_odr_init = 0;
- }
- if (m_s2z_odr_search)
- {
- odr_destroy(m_s2z_odr_search);
- m_s2z_odr_search = 0;
- }
-
- m_http_keepalive = 0;
- m_http_version = 0;
- if (!strcmp(hreq->version, "1.0"))
- {
- const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
- if (v && !strcmp(v, "Keep-Alive"))
- m_http_keepalive = 1;
- else
- m_http_keepalive = 0;
- m_http_version = "1.0";
- }
- else
- {
- const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
- if (v && !strcmp(v, "close"))
- m_http_keepalive = 0;
- else
- m_http_keepalive = 1;
- m_http_version = "1.1";
- }
-
- Z_SRW_PDU *srw_pdu = 0;
- Z_SOAP *soap_package = 0;
- char *charset = 0;
- Z_SRW_diagnostic *diagnostic = 0;
- int num_diagnostic = 0;
- if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
- &charset) == 0
- || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
- &charset, &diagnostic, &num_diagnostic) == 0)
- {
- m_s2z_odr_init = odr_createmem(ODR_ENCODE);
- m_s2z_odr_search = odr_createmem(ODR_ENCODE);
- m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
- m_s2z_init_apdu = 0;
- m_s2z_search_apdu = 0;
- m_s2z_present_apdu = 0;
-
- m_s2z_stylesheet = 0;
-
- if (srw_pdu->which == Z_SRW_searchRetrieve_request)
- {
- Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
-
- m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
- // recordXPath unsupported.
- if (srw_req->recordXPath)
- {
- yaz_add_srw_diagnostic(odr_decode(),
- &diagnostic, &num_diagnostic,
- 72, 0);
- }
- // must have a query
- if (!srw_req->query.cql)
- {
- yaz_add_srw_diagnostic(odr_decode(),
- &diagnostic, &num_diagnostic,
- 7, "query");
- }
- // sort unsupported
- if (srw_req->sort_type != Z_SRW_sort_type_none)
- {
- yaz_add_srw_diagnostic(odr_decode(),
- &diagnostic, &num_diagnostic,
- 80, 0);
- }
- // save stylesheet
- if (srw_req->stylesheet)
- m_s2z_stylesheet =
- odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
-
- // set packing for response records ..
- if (srw_req->recordPacking &&
- !strcmp(srw_req->recordPacking, "xml"))
- m_s2z_packing = Z_SRW_recordPacking_XML;
- else
- m_s2z_packing = Z_SRW_recordPacking_string;
-
- if (num_diagnostic)
- {
- Z_SRW_PDU *srw_pdu =
- yaz_srw_get(odr_encode(),
- Z_SRW_searchRetrieve_response);
- Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
-
- srw_res->diagnostics = diagnostic;
- srw_res->num_diagnostics = num_diagnostic;
- send_srw_response(srw_pdu);
- return;
- }
-
- // prepare search PDU
- m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
- Z_APDU_searchRequest);
- Z_SearchRequest *z_searchRequest =
- m_s2z_search_apdu->u.searchRequest;
-
- z_searchRequest->num_databaseNames = 1;
- z_searchRequest->databaseNames = (char**)
- odr_malloc(m_s2z_odr_search, sizeof(char *));
- z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
- srw_req->database);
-
- // query transformation
- Z_Query *query = (Z_Query *)
- odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
- z_searchRequest->query = query;
-
- if (srw_req->query_type == Z_SRW_query_type_cql)
- {
- Z_External *ext = (Z_External *)
- odr_malloc(m_s2z_odr_search, sizeof(*ext));
- ext->direct_reference =
- odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
- ext->indirect_reference = 0;
- ext->descriptor = 0;
- ext->which = Z_External_CQL;
- ext->u.cql = srw_req->query.cql;
-
- query->which = Z_Query_type_104;
- query->u.type_104 = ext;
- }
- else if (srw_req->query_type == Z_SRW_query_type_pqf)
- {
- Z_RPNQuery *RPNquery;
- YAZ_PQF_Parser pqf_parser;
-
- pqf_parser = yaz_pqf_create ();
-
- RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
- srw_req->query.pqf);
- if (!RPNquery)
- {
- const char *pqf_msg;
- size_t off;
- int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
- yaz_log(LOG_LOG, "%*s^\n", off+4, "");
- yaz_log(LOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
-
- send_to_srw_client_error(10, 0);
- return;
- }
- query->which = Z_Query_type_1;
- query->u.type_1 = RPNquery;
-
- yaz_pqf_destroy (pqf_parser);
- }
- else
- {
- send_to_srw_client_error(7, "query");
- return;
- }
-
- // present
- m_s2z_present_apdu = 0;
- int max = 0;
- if (srw_req->maximumRecords)
- max = *srw_req->maximumRecords;
- int start = 1;
- if (srw_req->startRecord)
- start = *srw_req->startRecord;
- if (max > 0)
- {
- // Some backend, such as Voyager doesn't honor piggyback
- // So we use present always (0 &&).
- if (0 && start <= 1) // Z39.50 piggyback
- {
- *z_searchRequest->smallSetUpperBound = max;
- *z_searchRequest->mediumSetPresentNumber = max;
- *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
-
- z_searchRequest->preferredRecordSyntax =
- yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
- VAL_TEXT_XML);
- if (srw_req->recordSchema)
- {
- z_searchRequest->smallSetElementSetNames =
- z_searchRequest->mediumSetElementSetNames =
- mk_esn_from_schema(m_s2z_odr_search,
- srw_req->recordSchema);
- }
- }
- else // Z39.50 present
- {
- m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
- Z_APDU_presentRequest);
- Z_PresentRequest *z_presentRequest =
- m_s2z_present_apdu->u.presentRequest;
- *z_presentRequest->resultSetStartPoint = start;
- *z_presentRequest->numberOfRecordsRequested = max;
- z_presentRequest->preferredRecordSyntax =
- yaz_oidval_to_z3950oid(m_s2z_odr_search, CLASS_RECSYN,
- VAL_TEXT_XML);
- if (srw_req->recordSchema)
- {
- z_presentRequest->recordComposition =
- (Z_RecordComposition *)
- odr_malloc(m_s2z_odr_search,
- sizeof(Z_RecordComposition));
- z_presentRequest->recordComposition->which =
- Z_RecordComp_simple;
- z_presentRequest->recordComposition->u.simple =
- mk_esn_from_schema(m_s2z_odr_search,
- srw_req->recordSchema);
- }
- }
- }
- if (!m_client)
- {
- m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
- Z_APDU_initRequest);
-
- // prevent m_initRequest_apdu memory from being grabbed
- // in Yaz_Proxy::handle_incoming_Z_PDU
- m_initRequest_apdu = m_s2z_init_apdu;
- handle_incoming_Z_PDU(m_s2z_init_apdu);
- return;
- }
- else
- {
- handle_incoming_Z_PDU(m_s2z_search_apdu);
- return;
- }
- }
- else if (srw_pdu->which == Z_SRW_explain_request)
- {
- Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
-
- m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
-
- // save stylesheet
- if (srw_req->stylesheet)
- m_s2z_stylesheet =
- odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
-
- if (srw_req->recordPacking &&
- !strcmp(srw_req->recordPacking, "xml"))
- m_s2z_packing = Z_SRW_recordPacking_XML;
- else
- m_s2z_packing = Z_SRW_recordPacking_string;
-
- if (num_diagnostic)
- {
- send_srw_explain_response(diagnostic, num_diagnostic);
- return;
- }
-
- if (!m_client)
- {
- m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
- Z_APDU_initRequest);
-
- // prevent m_initRequest_apdu memory from being grabbed
- // in Yaz_Proxy::handle_incoming_Z_PDU
- m_initRequest_apdu = m_s2z_init_apdu;
- handle_incoming_Z_PDU(m_s2z_init_apdu);
- }
- else
- send_srw_explain_response(0, 0);
- return;
- }
- else if (srw_pdu->which == Z_SRW_scan_request)
- {
- m_s2z_database = odr_strdup(m_s2z_odr_init,
- srw_pdu->u.scan_request->database);
-
- yaz_add_srw_diagnostic(odr_decode(),
- &diagnostic, &num_diagnostic,
- 4, "scan");
- Z_SRW_PDU *srw_pdu =
- yaz_srw_get(odr_encode(),
- Z_SRW_scan_response);
- Z_SRW_scanResponse *srw_res = srw_pdu->u.scan_response;
-
- srw_res->diagnostics = diagnostic;
- srw_res->num_diagnostics = num_diagnostic;
- send_srw_response(srw_pdu);
- return;
- }
- else
- {
- m_s2z_database = 0;
-
- send_to_srw_client_error(4, 0);
- }
- }
- int len = 0;
- Z_GDU *p = z_get_HTTP_Response(odr_encode(), 400);
- timeout(0);
- send_GDU(p, &len);
-}
-
-void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
-{
- Z_ReferenceId **refid = get_referenceIdP(apdu);
- nmem_reset(m_referenceId_mem);
- if (refid && *refid)
- {
- m_referenceId = (Z_ReferenceId *)
- nmem_malloc(m_referenceId_mem, sizeof(*m_referenceId));
- m_referenceId->len = m_referenceId->size = (*refid)->len;
- m_referenceId->buf = (unsigned char *)
- nmem_malloc(m_referenceId_mem, (*refid)->len);
- memcpy(m_referenceId->buf, (*refid)->buf, (*refid)->len);
- }
- else
- m_referenceId = 0;
-
- if (!m_client && m_invalid_session)
- {
- m_apdu_invalid_session = apdu;
- m_mem_invalid_session = odr_extract_mem(odr_decode());
- apdu = m_initRequest_apdu;
- }
-
- // Determine our client.
- Z_OtherInformation **oi;
- get_otherInfoAPDU(apdu, &oi);
- m_client = get_client(apdu, get_cookie(oi), get_proxy(oi));
- if (!m_client)
- {
- delete this;
- return;
- }
- m_client->m_server = this;
-
- if (apdu->which == Z_APDU_initRequest)
- {
- if (apdu->u.initRequest->implementationId)
- yaz_log(LOG_LOG, "%simplementationId: %s",
- m_session_str, apdu->u.initRequest->implementationId);
- if (apdu->u.initRequest->implementationName)
- yaz_log(LOG_LOG, "%simplementationName: %s",
- m_session_str, apdu->u.initRequest->implementationName);
- if (apdu->u.initRequest->implementationVersion)
- yaz_log(LOG_LOG, "%simplementationVersion: %s",
- m_session_str, apdu->u.initRequest->implementationVersion);
- if (m_initRequest_apdu == 0)
- {
- if (m_initRequest_mem)
- nmem_destroy(m_initRequest_mem);
- m_initRequest_apdu = apdu;
- m_initRequest_mem = odr_extract_mem(odr_decode());
-
- m_initRequest_preferredMessageSize = *apdu->u.initRequest->
- preferredMessageSize;
- *apdu->u.initRequest->preferredMessageSize = 1024*1024;
- m_initRequest_maximumRecordSize = *apdu->u.initRequest->
- maximumRecordSize;
- *apdu->u.initRequest->maximumRecordSize = 1024*1024;
-
- // save init options for the response..
- m_initRequest_options = apdu->u.initRequest->options;
-
- apdu->u.initRequest->options =
- (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
- sizeof(Odr_bitmask));
- ODR_MASK_ZERO(apdu->u.initRequest->options);
- int i;
- for (i = 0; i<= 24; i++)
- ODR_MASK_SET(apdu->u.initRequest->options, i);
- ODR_MASK_CLEAR(apdu->u.initRequest->options,
- Z_Options_negotiationModel);
- ODR_MASK_CLEAR(apdu->u.initRequest->options,
- Z_Options_concurrentOperations);
-
- // make new version
- m_initRequest_version = apdu->u.initRequest->protocolVersion;
- apdu->u.initRequest->protocolVersion =
- (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
- sizeof(Odr_bitmask));
- ODR_MASK_ZERO(apdu->u.initRequest->protocolVersion);
-
- for (i = 0; i<= 8; i++)
- ODR_MASK_SET(apdu->u.initRequest->protocolVersion, i);
- }
- if (m_client->m_init_flag)
- {
- if (handle_init_response_for_invalid_session(apdu))
- return;
- if (m_client->m_initResponse)
- {
- Z_APDU *apdu2 = m_client->m_initResponse;
- apdu2->u.initResponse->otherInfo = 0;
- if (m_client->m_cookie && *m_client->m_cookie)
- set_otherInformationString(apdu2, VAL_COOKIE, 1,
- m_client->m_cookie);
- apdu2->u.initResponse->referenceId =
- apdu->u.initRequest->referenceId;
- apdu2->u.initResponse->options = m_client->m_initResponse_options;
- apdu2->u.initResponse->protocolVersion =
- m_client->m_initResponse_version;
-
- send_to_client(apdu2);
- return;
- }
- }
- m_client->m_init_flag = 1;
- }
- handle_max_record_retrieve(apdu);
-
- if (apdu)
- apdu = handle_syntax_validation(apdu);
-
- if (apdu)
- apdu = handle_query_transformation(apdu);
-
- if (apdu)
- apdu = handle_query_validation(apdu);
-
- if (apdu)
- apdu = result_set_optimize(apdu);
- if (!apdu)
- {
- m_client->timeout(m_target_idletime); // mark it active even
- // though we didn't use it
- return;
- }
-
- // delete other info part from PDU before sending to target
- get_otherInfoAPDU(apdu, &oi);
- if (oi)
- *oi = 0;
-
- if (apdu->which == Z_APDU_presentRequest &&
- m_client->m_resultSetStartPoint == 0)
- {
- Z_PresentRequest *pr = apdu->u.presentRequest;
- m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
- m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
- } else {
- m_client->m_resultSetStartPoint = 0;
- }
- if (m_client->send_to_target(apdu) < 0)
- {
- delete m_client;
- m_client = 0;
- delete this;
- }
- else
- m_client->m_waiting = 1;
-}
-
-void Yaz_Proxy::connectNotify()
-{
-}
-
-void Yaz_Proxy::shutdown()
-{
- m_invalid_session = 0;
- // only keep if keep_alive flag is set...
- if (m_client &&
- m_client->m_pdu_recv < m_keepalive_limit_pdu &&
- m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
- m_client->m_waiting == 0)
- {
- yaz_log(LOG_LOG, "%sShutdown (client to proxy) keepalive %s",
- m_session_str,
- m_client->get_hostname());
- yaz_log(LOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
- m_session_str, m_client->m_pdu_recv,
- m_client->m_bytes_sent + m_client->m_bytes_recv,
- m_keepalive_limit_bw, m_keepalive_limit_pdu);
- assert (m_client->m_waiting != 2);
- // Tell client (if any) that no server connection is there..
- m_client->m_server = 0;
- m_invalid_session = 0;
- }
- else if (m_client)
- {
- yaz_log (LOG_LOG, "%sShutdown (client to proxy) close %s",
- m_session_str,
- m_client->get_hostname());
- assert (m_client->m_waiting != 2);
- delete m_client;
- }
- else if (!m_parent)
- {
- yaz_log (LOG_LOG, "%sshutdown (client to proxy) bad state",
- m_session_str);
- assert (m_parent);
- }
- else
- {
- yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
- m_session_str);
- }
- if (m_parent)
- m_parent->pre_init();
- delete this;
-}
-
-const char *Yaz_ProxyClient::get_session_str()
-{
- if (!m_server)
- return "0 ";
- return m_server->get_session_str();
-}
-
-void Yaz_ProxyClient::shutdown()
-{
- yaz_log (LOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
- get_hostname());
- delete m_server;
- delete this;
-}
-
-void Yaz_Proxy::failNotify()
-{
- inc_request_no();
- yaz_log (LOG_LOG, "%sConnection closed by client",
- get_session_str());
- shutdown();
-}
-
-void Yaz_ProxyClient::failNotify()
-{
- if (m_server)
- m_server->inc_request_no();
- yaz_log (LOG_LOG, "%sConnection closed by target %s",
- get_session_str(), get_hostname());
- shutdown();
-}
-
-void Yaz_ProxyClient::connectNotify()
-{
- const char *s = get_session_str();
- const char *h = get_hostname();
- yaz_log (LOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
- m_target_idletime);
- timeout(m_target_idletime);
- if (!m_server)
- pre_init_client();
-}
-
-IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
- *the_PDU_Observable, int fd)
-{
- return new Yaz_ProxyClient(the_PDU_Observable, 0);
-}
-
-Yaz_ProxyClient::~Yaz_ProxyClient()
-{
- if (m_prev)
- *m_prev = m_next;
- if (m_next)
- m_next->m_prev = m_prev;
- m_waiting = 2; // for debugging purposes only.
- odr_destroy(m_init_odr);
- delete m_last_query;
- xfree (m_last_resultSetId);
- xfree (m_cookie);
-}
-
-void Yaz_ProxyClient::pre_init_client()
-{
- Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
- Z_InitRequest *req = apdu->u.initRequest;
-
- int i;
- for (i = 0; i<= 24; i++)
- ODR_MASK_SET(req->options, i);
- ODR_MASK_CLEAR(apdu->u.initRequest->options,
- Z_Options_negotiationModel);
- ODR_MASK_CLEAR(apdu->u.initRequest->options,
- Z_Options_concurrentOperations);
- for (i = 0; i<= 10; i++)
- ODR_MASK_SET(req->protocolVersion, i);
-
- if (send_to_target(apdu) < 0)
- {
- delete this;
- }
- else
- {
- m_waiting = 1;
- m_init_flag = 1;
- }
-}
-
-void Yaz_Proxy::pre_init()
-{
- int i;
- const char *name = 0;
- const char *zurl_in_use[MAX_ZURL_PLEX];
- int limit_bw, limit_pdu, limit_req;
- int target_idletime, client_idletime;
- int max_clients;
- int keepalive_limit_bw, keepalive_limit_pdu;
- int pre_init;
- const char *cql2rpn = 0;
-
- Yaz_ProxyConfig *cfg = check_reconfigure();
-
- zurl_in_use[0] = 0;
-
- if (m_log_mask & PROXY_LOG_APDU_CLIENT)
- set_APDU_yazlog(1);
- else
- set_APDU_yazlog(0);
-
- for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
- &limit_bw, &limit_pdu, &limit_req,
- &target_idletime, &client_idletime,
- &max_clients,
- &keepalive_limit_bw,
- &keepalive_limit_pdu,
- &pre_init,
- &cql2rpn) ; i++)
- {
- if (pre_init)
- {
- int j;
- for (j = 0; zurl_in_use[j]; j++)
- {
- Yaz_ProxyClient *c;
- int spare = 0;
- int spare_waiting = 0;
- int in_use = 0;
- int other = 0;
- for (c = m_clientPool; c; c = c->m_next)
- {
- if (!strcmp(zurl_in_use[j], c->get_hostname()))
- {
- if (c->m_cookie == 0)
- {
- if (c->m_server == 0)
- if (c->m_waiting)
- spare_waiting++;
- else
- spare++;
- else
- in_use++;
- }
- else
- other++;
- }
- }
- yaz_log(LOG_LOG, "%spre-init %s %s use=%d other=%d spare=%d "
- "sparew=%d preinit=%d",m_session_str,
- name, zurl_in_use[j], in_use, other,
- spare, spare_waiting, pre_init);
- if (spare + spare_waiting < pre_init)
- {
- c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
- c->m_next = m_clientPool;
- if (c->m_next)
- c->m_next->m_prev = &c->m_next;
- m_clientPool = c;
- c->m_prev = &m_clientPool;
-
- if (m_log_mask & PROXY_LOG_APDU_SERVER)
- c->set_APDU_yazlog(1);
- else
- c->set_APDU_yazlog(0);
-
- if (c->client(zurl_in_use[j]))
- {
- timeout(60);
- delete c;
- return;
- }
- c->timeout(30);
- c->m_waiting = 1;
- c->m_target_idletime = target_idletime;
- c->m_seqno = m_seqno++;
- }
- }
- }
- }
-}
-
-void Yaz_Proxy::timeoutNotify()
-{
- if (m_parent)
- {
- if (m_bw_hold_PDU)
- {
- timeout(m_client_idletime);
- Z_GDU *apdu = m_bw_hold_PDU;
- m_bw_hold_PDU = 0;
-
- 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);
- }
- else if (m_stylesheet_nprl)
- convert_xsl_delay();
- else
- {
- inc_request_no();
-
- yaz_log (LOG_LOG, "%sTimeout (client to proxy)", m_session_str);
- shutdown();
- }
- }
- else
- {
- timeout(600);
- pre_init();
- }
-}
-
-void Yaz_Proxy::markInvalid()
-{
- m_client = 0;
- m_invalid_session = 1;
-}
-
-void Yaz_ProxyClient::timeoutNotify()
-{
- if (m_server)
- m_server->inc_request_no();
-
- yaz_log (LOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
- get_hostname());
- m_waiting = 1;
- m_root->pre_init();
- if (m_server && m_init_flag)
- {
- // target timed out in a session that was properly initialized
- // server object stay alive but we mark it as invalid so it
- // gets initialized again
- m_server->markInvalid();
- m_server = 0;
- }
- shutdown();
-}
-
-Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
- Yaz_Proxy *parent) :
- Yaz_Z_Assoc (the_PDU_Observable)
-{
- m_cookie = 0;
- m_next = 0;
- m_prev = 0;
- m_init_flag = 0;
- m_last_query = 0;
- m_last_resultSetId = 0;
- m_last_resultCount = 0;
- m_last_ok = 0;
- m_sr_transform = 0;
- m_waiting = 0;
- m_init_odr = odr_createmem (ODR_DECODE);
- m_initResponse = 0;
- m_initResponse_options = 0;
- m_initResponse_version = 0;
- m_initResponse_preferredMessageSize = 0;
- m_initResponse_maximumRecordSize = 0;
- m_resultSetStartPoint = 0;
- m_bytes_sent = m_bytes_recv = 0;
- m_pdu_recv = 0;
- m_server = 0;
- m_seqno = 0;
- m_target_idletime = 600;
- m_root = parent;
-}
-
-const char *Yaz_Proxy::option(const char *name, const char *value)
-{
- if (!strcmp (name, "optimize")) {
- if (value) {
- xfree (m_optimize);
- m_optimize = xstrdup (value);
- }
- return m_optimize;
- }
- return 0;
-}
-
-void Yaz_ProxyClient::recv_HTTP_response(Z_HTTP_Response *apdu, int len)
-{
-
-}
-
-void Yaz_ProxyClient::recv_GDU(Z_GDU *apdu, int len)
-{
- if (apdu->which == Z_GDU_Z3950)
- recv_Z_PDU(apdu->u.z3950, len);
- else if (apdu->which == Z_GDU_HTTP_Response)
- recv_HTTP_response(apdu->u.HTTP_Response, len);
- else
- shutdown();
-}
-
-int Yaz_Proxy::handle_init_response_for_invalid_session(Z_APDU *apdu)
-{
- if (!m_invalid_session)
- return 0;
- m_invalid_session = 0;
- handle_incoming_Z_PDU(m_apdu_invalid_session);
- assert (m_mem_invalid_session);
- nmem_destroy(m_mem_invalid_session);
- m_mem_invalid_session = 0;
- return 1;
-}
-
-void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
-{
- m_bytes_recv += len;
-
- m_pdu_recv++;
- m_waiting = 0;
- if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
- yaz_log (LOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
- apdu_name(apdu), get_hostname(), len);
- if (apdu->which == Z_APDU_initResponse)
- {
- if (!m_server) // if this is a pre init session , check for more
- m_root->pre_init();
- NMEM nmem = odr_extract_mem (odr_decode());
- odr_reset (m_init_odr);
- nmem_transfer (m_init_odr->mem, nmem);
- m_initResponse = apdu;
- m_initResponse_options = apdu->u.initResponse->options;
- m_initResponse_version = apdu->u.initResponse->protocolVersion;
- m_initResponse_preferredMessageSize =
- *apdu->u.initResponse->preferredMessageSize;
- m_initResponse_maximumRecordSize =
- *apdu->u.initResponse->maximumRecordSize;
-
- Z_InitResponse *ir = apdu->u.initResponse;
- char *im0 = ir->implementationName;
-
- char *im1 = (char*)
- odr_malloc(m_init_odr, 20 + (im0 ? strlen(im0) : 0));
- *im1 = '\0';
- if (im0)
- {
- strcat(im1, im0);
- strcat(im1, " ");
- }
- strcat(im1, "(YAZ Proxy)");
- ir->implementationName = im1;
-
- nmem_destroy (nmem);
-
- if (m_server && m_server->handle_init_response_for_invalid_session(apdu))
- return;
- }
- if (apdu->which == Z_APDU_searchResponse)
- {
- Z_SearchResponse *sr = apdu->u.searchResponse;
- m_last_resultCount = *sr->resultCount;
- int status = *sr->searchStatus;
- if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
- {
- m_last_ok = 1;
-
- if (sr->records && sr->records->which == Z_Records_DBOSD)
- {
- m_cache.add(odr_decode(),
- sr->records->u.databaseOrSurDiagnostics, 1,
- *sr->resultCount);
- }
- }
- }
- if (apdu->which == Z_APDU_presentResponse)
- {
- Z_PresentResponse *pr = apdu->u.presentResponse;
- if (m_sr_transform)
- {
- m_sr_transform = 0;
- Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
- Z_SearchResponse *sr = new_apdu->u.searchResponse;
- sr->referenceId = pr->referenceId;
- *sr->resultCount = m_last_resultCount;
- sr->records = pr->records;
- sr->nextResultSetPosition = pr->nextResultSetPosition;
- sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
- apdu = new_apdu;
- }
- if (pr->records &&
- pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
- {
- m_cache.add(odr_decode(),
- pr->records->u.databaseOrSurDiagnostics,
- m_resultSetStartPoint, -1);
- m_resultSetStartPoint = 0;
- }
- }
- if (m_cookie)
- set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
- if (m_server)
- {
- m_server->send_to_client(apdu);
- }
- if (apdu->which == Z_APDU_close)
- {
- shutdown();
- }
-}
-
-void Yaz_Proxy::low_socket_close()
-{
- int i;
- for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
- if (m_lo_fd[i] >= 0)
- ::close(m_lo_fd[i]);
-}
-
-void Yaz_Proxy::low_socket_open()
-{
- int i;
- for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
- m_lo_fd[i] = open("/dev/null", O_RDONLY);
-}
-
-int Yaz_Proxy::server(const char *addr)
-{
- int r = Yaz_Z_Assoc::server(addr);
- if (!r)
- {
- yaz_log(LOG_LOG, "%sStarted proxy " VERSION " on %s", m_session_str, addr);
- timeout(1);
- }
- return r;
-}
-
projects / yazpp-moved-to-github.git / blobdiff