src/yaz-proxy.cpp

   1 /* This file is part of YAZ proxy
   2    Copyright (C) 1998-2008 Index Data
   3
   4 YAZ proxy is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 YAZ proxy is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18
  19 #ifdef WIN32
  20 #define HAVE_SYS_STAT_H 1
  21 #define HAVE_SYS_TYPES_H 1
  22 #endif
  23
  24 #if HAVE_UNISTD_H
  25 #include <unistd.h>
  26 #endif
  27 #if HAVE_SYS_TIME_H
  28 #include <sys/time.h>
  29 #endif
  30 #if HAVE_SYS_TYPES_H
  31 #include <sys/types.h>
  32 #endif
  33 #if HAVE_SYS_STAT_H
  34 #include <sys/stat.h>
  35 #endif
  36
  37 #include <assert.h>
  38 #include <stdlib.h>
  39 #include <time.h>
  40 #include <fcntl.h>
  41
  42 #include <yaz/srw.h>
  43 #include <yaz/marcdisp.h>
  44 #include <yaz/yaz-iconv.h>
  45 #include <yaz/log.h>
  46 #include <yaz/diagbib1.h>
  47 #include "proxyp.h"
  48 #include <yaz/pquery.h>
  49 #include <yaz/otherinfo.h>
  50 #include <yaz/charneg.h>
  51 #include <yaz/oid_db.h>
  52 #include "msg-thread.h"
  53
  54 using namespace yazpp_1;
  55
  56 #ifdef WIN32
  57 #define strncasecmp _strnicmp
  58 #endif
  59
  60 class YAZ_EXPORT Auth_Msg : public IMsg_Thread {
  61 public:
  62     int m_ret;
  63     IMsg_Thread *handle();
  64     void result();
  65     Yaz_Proxy *m_proxy;
  66     NMEM m_nmem;
  67     char *m_apdu_buf;
  68     int m_apdu_len;
  69     Auth_Msg();
  70     virtual ~Auth_Msg();
  71 };
  72
  73 Auth_Msg::Auth_Msg()
  74 {
  75     m_nmem = nmem_create();
  76 }
  77
  78 Auth_Msg::~Auth_Msg()
  79 {
  80     nmem_destroy(m_nmem);
  81 }
  82
  83 IMsg_Thread *Auth_Msg::handle()
  84 {
  85     ODR decode = odr_createmem(ODR_DECODE);
  86     Z_APDU *apdu;
  87
  88     odr_setbuf(decode, m_apdu_buf, m_apdu_len, 0);
  89     int r = z_APDU(decode, &apdu, 0, 0);
  90     if (!r)
  91     {
  92         yaz_log(YLOG_WARN, "decode failed in Auth_Msg::handle");
  93     }
  94     else
  95     {
  96         m_ret = m_proxy->handle_authentication(apdu);
  97     }
  98     odr_destroy(decode);
  99     return this;
 100 }
 101
 102 void Auth_Msg::result()
 103 {
 104     if (m_proxy->dec_ref())
 105     {
 106         yaz_log(YLOG_LOG, "Auth_Msg::proxy deleted meanwhile");
 107     }
 108     else
 109     {
 110         odr_setbuf(m_proxy->odr_decode(), m_apdu_buf, m_apdu_len, 0);
 111         Z_APDU *apdu = 0;
 112         int r = z_APDU(m_proxy->odr_decode(), &apdu, 0, 0);
 113         if (!r)
 114             yaz_log(YLOG_LOG, "Auth_Msg::result z_APDU failed");
 115         m_proxy->result_authentication(apdu, m_ret);
 116     }
 117     delete this;
 118 }
 119
 120 void Yaz_Proxy::result_authentication(Z_APDU *apdu, int ret)
 121 {
 122     if (apdu == 0 || ret == 0)
 123     {
 124         Z_APDU *apdu_reject = zget_APDU(odr_encode(), Z_APDU_initResponse);
 125         *apdu_reject->u.initResponse->result = 0;
 126         send_to_client(apdu_reject);
 127         dec_ref();
 128     }
 129     else
 130     {
 131         if (apdu->which == Z_APDU_initRequest)
 132         {
 133             Yaz_ProxyConfig *cfg = check_reconfigure();
 134             if (cfg)
 135                 cfg->target_authentication(m_default_target, odr_encode(),
 136                                            apdu->u.initRequest);
 137         }
 138         handle_incoming_Z_PDU_2(apdu);
 139     }
 140 }
 141
 142 static const char *apdu_name(Z_APDU *apdu)
 143 {
 144     switch (apdu->which)
 145     {
 146     case Z_APDU_initRequest:
 147         return "initRequest";
 148     case Z_APDU_initResponse:
 149         return "initResponse";
 150     case Z_APDU_searchRequest:
 151         return "searchRequest";
 152     case Z_APDU_searchResponse:
 153         return "searchResponse";
 154     case Z_APDU_presentRequest:
 155         return "presentRequest";
 156     case Z_APDU_presentResponse:
 157         return "presentResponse";
 158     case Z_APDU_deleteResultSetRequest:
 159         return "deleteResultSetRequest";
 160     case Z_APDU_deleteResultSetResponse:
 161         return "deleteResultSetResponse";
 162     case Z_APDU_scanRequest:
 163         return "scanRequest";
 164     case Z_APDU_scanResponse:
 165         return "scanResponse";
 166     case Z_APDU_sortRequest:
 167         return "sortRequest";
 168     case Z_APDU_sortResponse:
 169         return "sortResponse";
 170     case Z_APDU_extendedServicesRequest:
 171         return "extendedServicesRequest";
 172     case Z_APDU_extendedServicesResponse:
 173         return "extendedServicesResponse";
 174     case Z_APDU_close:
 175         return "close";
 176     }
 177     return "other";
 178 }
 179
 180 static const char *gdu_name(Z_GDU *gdu)
 181 {
 182     switch(gdu->which)
 183     {
 184     case Z_GDU_Z3950:
 185         return apdu_name(gdu->u.z3950);
 186     case Z_GDU_HTTP_Request:
 187         return "HTTP Request";
 188     case Z_GDU_HTTP_Response:
 189         return "HTTP Response";
 190     }
 191     return "Unknown request/response";
 192 }
 193
 194 Yaz_Proxy::Yaz_Proxy(IPDU_Observable *the_PDU_Observable,
 195                      ISocketObservable *the_socket_observable,
 196                      Yaz_Proxy *parent)
 197     :
 198     Z_Assoc(the_PDU_Observable),
 199     m_bw_stat(60), m_pdu_stat(60), m_search_stat(60)
 200 {
 201     m_PDU_Observable = the_PDU_Observable;
 202     m_socket_observable = the_socket_observable;
 203     m_client = 0;
 204     m_parent = parent;
 205     m_clientPool = 0;
 206     m_seqno = 1;
 207     m_keepalive_limit_bw = 500000;
 208     m_keepalive_limit_pdu = 1000;
 209     m_proxyTarget = 0;
 210     m_default_target = 0;
 211     m_proxy_negotiation_charset = 0;
 212     m_proxy_negotiation_lang = 0;
 213     m_proxy_negotiation_default_charset = 0;
 214     m_charset_converter = new Yaz_CharsetConverter;
 215     m_max_clients = 150;
 216     m_log_mask = 0;
 217     m_seed = time(0);
 218     m_client_idletime = 600;
 219     m_target_idletime = 600;
 220     m_max_sockets = 1024;
 221     m_optimize = xstrdup("1");
 222     strcpy(m_session_str, "0 ");
 223     m_session_no = 0;
 224     m_bytes_sent = 0;
 225     m_bytes_recv = 0;
 226     m_bw_max = 0;
 227     m_pdu_max = 0;
 228     m_search_max = 0;
 229     m_max_connect = 0;
 230     m_max_connect_period = 0;
 231     m_limit_connect = 0;
 232     m_limit_connect_period = 0;
 233     m_timeout_mode = timeout_normal;
 234     m_timeout_gdu = 0;
 235     m_max_record_retrieve = 0;
 236     m_reconfig_flag = 0;
 237     m_config_fname = 0;
 238     m_request_no = 0;
 239     m_flag_invalid_session = 0;
 240     m_referenceId = 0;
 241     m_referenceId_mem = nmem_create();
 242     m_config = 0;
 243     m_marcxml_mode = none;
 244     m_stylesheet_xsp = 0;
 245     m_stylesheet_nprl = 0;
 246     m_stylesheet_apdu = 0;
 247     m_s2z_stylesheet = 0;
 248     m_s2z_database = 0;
 249     m_schema = 0;
 250     m_backend_type = 0;
 251     m_backend_charset = 0;
 252     m_frontend_type[0] = -1;
 253     m_initRequest_apdu = 0;
 254     m_initRequest_mem = 0;
 255     m_initRequest_preferredMessageSize = 0;
 256     m_initRequest_maximumRecordSize = 0;
 257     m_initRequest_options = 0;
 258     m_initRequest_version = 0;
 259     m_initRequest_oi_negotiation_charsets = 0;
 260     m_initRequest_oi_negotiation_num_charsets = 0;
 261     m_initRequest_oi_negotiation_langs = 0;
 262     m_initRequest_oi_negotiation_num_langs = 0;
 263     m_initRequest_oi_negotiation_selected = 0;
 264     m_apdu_invalid_session = 0;
 265     m_mem_invalid_session = 0;
 266     m_s2z_odr_init = 0;
 267     m_s2z_odr_search = 0;
 268     m_s2z_init_apdu = 0;
 269     m_s2z_search_apdu = 0;
 270     m_s2z_present_apdu = 0;
 271     m_http_keepalive = 0;
 272     m_http_version = 0;
 273     m_soap_ns = 0;
 274     m_s2z_packing = Z_SRW_recordPacking_string;
 275 #if HAVE_GETTIMEOFDAY
 276     m_time_tv = xmalloc(sizeof(struct timeval));
 277     struct timeval *tv = (struct timeval *) m_time_tv;
 278     tv->tv_sec = 0;
 279     tv->tv_usec = 0;
 280 #else
 281     m_time_tv = 0;
 282 #endif
 283     m_usemarcon_ini_stage1 = 0;
 284     m_usemarcon_ini_stage2 = 0;
 285     m_usemarcon = new Yaz_usemarcon();
 286     if (!m_parent)
 287         low_socket_open();
 288     m_my_thread = 0;
 289     m_ref_count = 1;
 290     m_main_ptr_dec = false;
 291     m_peername = 0;
 292     m_num_msg_threads = 0;
 293 }
 294
 295 void Yaz_Proxy::inc_ref()
 296 {
 297     m_ref_count++;
 298 }
 299
 300 Yaz_Proxy::~Yaz_Proxy()
 301 {
 302     yaz_log(YLOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
 303             m_bytes_sent, m_bytes_recv);
 304     nmem_destroy(m_initRequest_mem);
 305     nmem_destroy(m_mem_invalid_session);
 306     nmem_destroy(m_referenceId_mem);
 307
 308     xfree(m_proxyTarget);
 309     xfree(m_default_target);
 310     xfree(m_proxy_negotiation_charset);
 311     xfree(m_proxy_negotiation_lang);
 312     xfree(m_proxy_negotiation_default_charset);
 313     delete m_charset_converter;
 314     xfree(m_optimize);
 315
 316 #if YAZ_HAVE_XSLT
 317     if (m_stylesheet_xsp)
 318         xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
 319 #endif
 320     xfree(m_time_tv);
 321
 322     xfree(m_peername);
 323     xfree(m_schema);
 324     xfree(m_backend_type);
 325     xfree(m_backend_charset);
 326     xfree(m_usemarcon_ini_stage1);
 327     xfree(m_usemarcon_ini_stage2);
 328     delete m_usemarcon;
 329     if (m_s2z_odr_init)
 330         odr_destroy(m_s2z_odr_init);
 331     if (m_s2z_odr_search)
 332         odr_destroy(m_s2z_odr_search);
 333     if (!m_parent)
 334         low_socket_close();
 335     if (!m_parent)
 336         delete m_my_thread;
 337     delete m_config;
 338 }
 339
 340 void Yaz_Proxy::set_debug_mode(int mode)
 341 {
 342     m_debug_mode = mode;
 343 }
 344
 345 int Yaz_Proxy::set_config(const char *config)
 346 {
 347     delete m_config;
 348     m_config = new Yaz_ProxyConfig();
 349     xfree(m_config_fname);
 350     m_config_fname = xstrdup(config);
 351     int r = m_config->read_xml(config);
 352     if (!r)
 353     {
 354         int period = 60;
 355         m_config->get_generic_info(&m_log_mask, &m_max_clients,
 356                                    &m_max_connect, &m_limit_connect, &period,
 357                                    &m_num_msg_threads);
 358         m_connect.set_period(period);
 359     }
 360     return r;
 361 }
 362
 363 void Yaz_Proxy::set_default_target(const char *target)
 364 {
 365     xfree(m_default_target);
 366     m_default_target = 0;
 367     if (target)
 368         m_default_target = (char *) xstrdup(target);
 369 }
 370
 371 void Yaz_Proxy::set_proxy_negotiation(const char *charset, const char *lang,
 372                                        const char *default_charset)
 373 {
 374     yaz_log(YLOG_DEBUG, "%sSet the proxy negotiation: charset to '%s', "
 375         "default charset to '%s', language to '%s'", m_session_str,
 376         charset?charset:"none",
 377         default_charset?default_charset:"none",
 378         lang?lang:"none");
 379     xfree(m_proxy_negotiation_charset);
 380     xfree(m_proxy_negotiation_lang);
 381     m_proxy_negotiation_charset = m_proxy_negotiation_lang = 0;
 382     if (charset)
 383         m_proxy_negotiation_charset = (char *) xstrdup(charset);
 384     if (lang)
 385         m_proxy_negotiation_lang = (char *) xstrdup(lang);
 386     if (default_charset)
 387         m_proxy_negotiation_default_charset =
 388             (char *) xstrdup(default_charset);
 389 }
 390
 391 Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
 392 {
 393     if (m_parent)
 394         return m_parent->check_reconfigure();
 395
 396     Yaz_ProxyConfig *cfg = m_config;
 397     if (m_reconfig_flag)
 398     {
 399         yaz_log(YLOG_LOG, "reconfigure");
 400         if (m_config_fname && cfg)
 401         {
 402             yaz_log(YLOG_LOG, "reconfigure config %s", m_config_fname);
 403             int r = cfg->read_xml(m_config_fname);
 404             if (r)
 405                 yaz_log(YLOG_WARN, "reconfigure failed");
 406             else
 407             {
 408                 m_log_mask = 0;
 409                 int period = 60;
 410                 cfg->get_generic_info(&m_log_mask, &m_max_clients,
 411                                       &m_max_connect, &m_limit_connect,
 412                                       &period, &m_num_msg_threads);
 413                 m_connect.set_period(period);
 414             }
 415         }
 416         else
 417             yaz_log(YLOG_LOG, "reconfigure");
 418         m_reconfig_flag = 0;
 419     }
 420     return cfg;
 421 }
 422
 423 IPDU_Observer *Yaz_Proxy::sessionNotify(IPDU_Observable
 424                                         *the_PDU_Observable, int fd)
 425 {
 426     check_reconfigure();
 427
 428     char session_str[200];
 429     const char *peername = the_PDU_Observable->getpeername();
 430     if (!peername)
 431         peername = "nullpeer";
 432
 433     if (m_log_mask & PROXY_LOG_IP_CLIENT)
 434         sprintf(session_str, "%ld:%d %.80s %d ",
 435                 (long) time(0), m_session_no, peername, 0);
 436     else
 437         sprintf(session_str, "%ld:%d %d ",
 438                 (long) time(0), m_session_no, 0);
 439     m_session_no++;
 440
 441     yaz_log(YLOG_LOG, "%sNew session %s", session_str, peername);
 442
 443     Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable,
 444                                          m_socket_observable, this);
 445
 446     new_proxy->m_config = 0;
 447     new_proxy->m_config_fname = 0;
 448     new_proxy->timeout(m_client_idletime);
 449     new_proxy->m_target_idletime = m_target_idletime;
 450     new_proxy->set_default_target(m_default_target);
 451     new_proxy->m_max_clients = m_max_clients;
 452     new_proxy->m_log_mask = m_log_mask;
 453     new_proxy->m_session_no = m_session_no;
 454     new_proxy->m_num_msg_threads = m_num_msg_threads;
 455
 456 #if 0
 457     // in case we want to watch a particular client..
 458     if (!strcmp(peername, "tcp:163.121.19.82")) // NIS GROUP
 459         new_proxy->m_log_mask = 255;
 460 #endif
 461
 462     new_proxy->set_APDU_log(get_APDU_log());
 463     if (new_proxy->m_log_mask & PROXY_LOG_APDU_CLIENT)
 464         new_proxy->set_APDU_yazlog(1);
 465     else
 466         new_proxy->set_APDU_yazlog(0);
 467     strcpy(new_proxy->m_session_str, session_str);
 468     new_proxy->m_peername = xstrdup(peername);
 469     new_proxy->set_proxy_negotiation(m_proxy_negotiation_charset,
 470         m_proxy_negotiation_lang, m_proxy_negotiation_default_charset);
 471     // create thread object the first time we get an incoming connection
 472     if (!m_my_thread && m_num_msg_threads > 0)
 473     {
 474         yaz_log(YLOG_LOG, "%sStarting message thread management. number=%d",
 475                  session_str, m_num_msg_threads);
 476         m_my_thread = new Msg_Thread(m_socket_observable, m_num_msg_threads);
 477     }
 478     new_proxy->m_my_thread = m_my_thread;
 479     return new_proxy;
 480 }
 481
 482 char *Yaz_Proxy::get_cookie(Z_OtherInformation **otherInfo)
 483 {
 484     Z_OtherInformationUnit *oi =
 485         update_otherInformation(otherInfo, 0, yaz_oid_userinfo_cookie, 1, 1);
 486
 487     if (oi && oi->which == Z_OtherInfo_characterInfo)
 488         return oi->information.characterInfo;
 489     return 0;
 490 }
 491
 492 char *Yaz_Proxy::get_proxy(Z_OtherInformation **otherInfo)
 493 {
 494     Z_OtherInformationUnit *oi =
 495         update_otherInformation(otherInfo, 0, yaz_oid_userinfo_proxy, 1, 1);
 496
 497     if (oi && oi->which == Z_OtherInfo_characterInfo)
 498         return oi->information.characterInfo;
 499     return 0;
 500 }
 501 const char *Yaz_Proxy::load_balance(const char **url)
 502 {
 503     int zurl_in_use[MAX_ZURL_PLEX];
 504     int zurl_in_spare[MAX_ZURL_PLEX];
 505     Yaz_ProxyClient *c;
 506     int i;
 507
 508     for (i = 0; i<MAX_ZURL_PLEX; i++)
 509     {
 510         zurl_in_use[i] = 0;
 511         zurl_in_spare[i] = 0;
 512     }
 513     for (c = m_parent->m_clientPool; c; c = c->m_next)
 514     {
 515         for (i = 0; url[i]; i++)
 516             if (!strcmp(url[i], c->get_hostname()))
 517             {
 518                 zurl_in_use[i]++;
 519                 if (c->m_cookie == 0 && c->m_server == 0 && c->m_waiting == 0)
 520                     zurl_in_spare[i]++;
 521             }
 522     }
 523     int min_use = 100000;
 524     int spare_for_min = 0;
 525     int max_spare = 0;
 526     const char *ret_min = 0;
 527     const char *ret_spare = 0;
 528     for (i = 0; url[i]; i++)
 529     {
 530         yaz_log(YLOG_DEBUG, "%szurl=%s use=%d spare=%d",
 531                 m_session_str, url[i], zurl_in_use[i], zurl_in_spare[i]);
 532         if (min_use > zurl_in_use[i])
 533         {
 534             ret_min = url[i];
 535             min_use = zurl_in_use[i];
 536             spare_for_min = zurl_in_spare[i];
 537         }
 538         if (max_spare < zurl_in_spare[i])
 539         {
 540             ret_spare = url[i];
 541             max_spare = zurl_in_spare[i];
 542         }
 543     }
 544     return ret_min;
 545 }
 546
 547 int Yaz_Proxy::get_number_of_connections()
 548 {
 549     int no_connections = 0;
 550     Yaz_ProxyClient *c;
 551
 552     for (c = m_parent->m_clientPool; c; c = c->m_next)
 553     {
 554         assert(c->m_prev);
 555         assert(*c->m_prev == c);
 556         if (!strcmp(m_proxyTarget, c->get_hostname()))
 557         {
 558             no_connections++;
 559         }
 560     }
 561     yaz_log(YLOG_LOG, "%sExisting %s connections: %d", m_session_str, m_proxyTarget,
 562         no_connections);
 563     return no_connections;
 564 }
 565
 566 Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu, const char *cookie,
 567                                        const char *proxy_host, int *http_code)
 568 {
 569     assert(m_parent);
 570     Yaz_Proxy *parent = m_parent;
 571     Yaz_ProxyClient *c = m_client;
 572
 573     if (!m_proxyTarget)
 574     {
 575         const char *url[MAX_ZURL_PLEX];
 576         Yaz_ProxyConfig *cfg = check_reconfigure();
 577         if (proxy_host)
 578         {
 579             if (parent && parent->m_debug_mode)
 580             {
 581                 // only to be enabled for debugging...
 582                 if (!strcmp(proxy_host, "stop"))
 583                     exit(0);
 584             }
 585             xfree(m_default_target);
 586             m_default_target = xstrdup(proxy_host);
 587         }
 588         proxy_host = m_default_target;
 589         int client_idletime = -1;
 590         const char *cql2rpn_fname = 0;
 591         const char *negotiation_charset = 0;
 592         const char *negotiation_lang = 0;
 593         const char *query_charset = 0;
 594         const char *default_client_query_charset = 0;
 595         url[0] = m_default_target;
 596         url[1] = 0;
 597         if (cfg)
 598         {
 599             int pre_init = 0;
 600             cfg->get_target_info(proxy_host, url, &m_bw_max,
 601                                  &m_pdu_max, &m_max_record_retrieve,
 602                                  &m_search_max,
 603                                  &m_target_idletime, &client_idletime,
 604                                  &m_max_sockets,
 605                                  &parent->m_max_clients,
 606                                  &m_keepalive_limit_bw,
 607                                  &m_keepalive_limit_pdu,
 608                                  &pre_init,
 609                                  &cql2rpn_fname,
 610                                  &negotiation_charset,
 611                                  &negotiation_lang,
 612                                  &query_charset,
 613                                  &default_client_query_charset);
 614         }
 615         if (client_idletime != -1)
 616         {
 617             m_client_idletime = client_idletime;
 618             timeout(m_client_idletime);
 619         }
 620
 621         // get those FILE descriptors available
 622         m_parent->low_socket_close();
 623         if (cql2rpn_fname)
 624             m_cql2rpn.set_pqf_file(cql2rpn_fname);
 625         // reserve them again
 626         m_parent->low_socket_open();
 627
 628         if (negotiation_charset || negotiation_lang || default_client_query_charset)
 629         {
 630             set_proxy_negotiation(negotiation_charset,
 631                 negotiation_lang, default_client_query_charset);
 632         }
 633         m_charset_converter->set_target_query_charset(query_charset);
 634         if (!url[0])
 635         {
 636             yaz_log(YLOG_LOG, "%sNo default target", m_session_str);
 637             return 0;
 638         }
 639         // we don't handle multiplexing for cookie session, so we just
 640         // pick the first one in this case (anonymous users will be able
 641         // to use any backend)
 642         if (cookie && *cookie)
 643             m_proxyTarget = (char*) xstrdup(url[0]);
 644         else
 645             m_proxyTarget = (char*) xstrdup(load_balance(url));
 646     }
 647     if (cookie && *cookie)
 648     {   // search in sessions with a cookie
 649         for (c = parent->m_clientPool; c; c = c->m_next)
 650         {
 651             assert(c->m_prev);
 652             assert(*c->m_prev == c);
 653             if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
 654                 !strcmp(m_proxyTarget, c->get_hostname()))
 655             {
 656                 // Found it in cache
 657                 // The following handles "cancel"
 658                 // If connection is busy (waiting for PDU) and
 659                 // we have an initRequest we can safely do re-open
 660                 if (c->m_waiting && apdu->which == Z_APDU_initRequest)
 661                 {
 662                     yaz_log(YLOG_LOG, "%s REOPEN target=%s", m_session_str,
 663                              c->get_hostname());
 664                     c->close();
 665                     c->m_init_flag = 0;
 666
 667                     c->m_last_ok = 0;
 668                     c->m_cache.clear();
 669                     c->m_last_resultCount = 0;
 670                     c->m_sr_transform = 0;
 671                     c->m_waiting = 0;
 672                     c->m_resultSetStartPoint = 0;
 673                     c->m_target_idletime = m_target_idletime;
 674                     if (c->client(m_proxyTarget))
 675                     {
 676                         delete c;
 677                         return 0;
 678                     }
 679                     c->timeout(30);
 680                 }
 681                 c->m_seqno = parent->m_seqno;
 682                 if (c->m_server && c->m_server != this)
 683                     c->m_server->m_client = 0;
 684                 c->m_server = this;
 685                 (parent->m_seqno)++;
 686                 yaz_log(YLOG_DEBUG, "get_client 1 %p %p", this, c);
 687                 return c;
 688             }
 689         }
 690     }
 691     else if (!c && apdu->which == Z_APDU_initRequest )
 692     {
 693         // anonymous sessions without cookie.
 694         // if authentication is set it is NOT anonymous se we can't share them.
 695         // If charset and lang negotiation is use it is NOT anonymous session too.
 696         for (c = parent->m_clientPool; c; c = c->m_next)
 697         {
 698             assert(c->m_prev);
 699             assert(*c->m_prev == c);
 700             if (c->m_server == 0 && c->m_cookie == 0 && c->m_waiting == 0
 701                 && c->compare_idAuthentication(apdu)
 702                 && c->compare_charset(apdu)
 703                 && !strcmp(m_proxyTarget, c->get_hostname()))
 704             {
 705                 // found it in cache
 706                 yaz_log(YLOG_LOG, "%sREUSE %d %s",
 707                          m_session_str, parent->m_seqno, c->get_hostname());
 708
 709                 c->m_seqno = parent->m_seqno;
 710                 assert(c->m_server == 0);
 711                 c->m_server = this;
 712
 713                 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
 714                     c->set_APDU_yazlog(1);
 715                 else
 716                     c->set_APDU_yazlog(0);
 717
 718                 (parent->m_seqno)++;
 719
 720                 parent->pre_init();
 721
 722                 return c;
 723             }
 724         }
 725     }
 726     if (!m_client)
 727     {
 728         if (apdu->which != Z_APDU_initRequest)
 729         {
 730             yaz_log(YLOG_LOG, "%sno init request as first PDU", m_session_str);
 731             *http_code = 500;
 732             return 0;
 733         }
 734
 735         int no_in_use = get_number_of_connections();
 736         if (no_in_use >= m_max_sockets)
 737         {
 738             yaz_log(YLOG_LOG, "%smax sockets reached %d", m_session_str,
 739                 m_max_sockets);
 740             *http_code = 500;
 741             return 0;
 742         }
 743         // go through list of clients - and find the lowest/oldest one.
 744         Yaz_ProxyClient *c_min = 0;
 745         int min_seq = -1;
 746         int no_of_clients = 0;
 747         if (parent->m_clientPool)
 748             yaz_log(YLOG_DEBUG, "Existing sessions");
 749         for (c = parent->m_clientPool; c; c = c->m_next)
 750         {
 751             yaz_log(YLOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
 752                                c->m_waiting, c->get_hostname(),
 753                                c->m_cookie ? c->m_cookie : "");
 754             no_of_clients++;
 755             if (min_seq < 0 || c->m_seqno < min_seq)
 756             {
 757                 min_seq = c->m_seqno;
 758                 c_min = c;
 759             }
 760         }
 761         if (no_of_clients >= parent->m_max_clients)
 762         {
 763             c = c_min;
 764             if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
 765             {
 766                 yaz_log(YLOG_LOG, "%sMAXCLIENTS %d Destroy %d",
 767                          m_session_str, parent->m_max_clients, c->m_seqno);
 768                 if (c->m_server && c->m_server != this)
 769                     c->m_server->dec_ref();
 770             }
 771             else
 772             {
 773                 yaz_log(YLOG_LOG, "%sMAXCLIENTS %d Reuse %d %d %s",
 774                          m_session_str, parent->m_max_clients,
 775                          c->m_seqno, parent->m_seqno, c->get_hostname());
 776                 xfree(c->m_cookie);
 777                 c->m_cookie = 0;
 778                 if (cookie)
 779                     c->m_cookie = xstrdup(cookie);
 780                 c->m_seqno = parent->m_seqno;
 781                 if (c->m_server && c->m_server != this)
 782                 {
 783                     c->m_server->m_client = 0;
 784                     c->m_server->dec_ref();
 785                 }
 786                 (parent->m_seqno)++;
 787                 c->m_target_idletime = m_target_idletime;
 788                 c->timeout(m_target_idletime);
 789
 790                 if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
 791                     c->set_APDU_yazlog(1);
 792                 else
 793                     c->set_APDU_yazlog(0);
 794
 795                 return c;
 796             }
 797         }
 798         else
 799         {
 800
 801             yaz_log(YLOG_LOG, "%sNEW %d %s",
 802                      m_session_str, parent->m_seqno, m_proxyTarget);
 803             c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
 804             c->m_next = parent->m_clientPool;
 805             if (c->m_next)
 806                 c->m_next->m_prev = &c->m_next;
 807             parent->m_clientPool = c;
 808             c->m_prev = &parent->m_clientPool;
 809         }
 810
 811         xfree(c->m_cookie);
 812         c->m_cookie = 0;
 813         if (cookie)
 814             c->m_cookie = xstrdup(cookie);
 815
 816         c->m_seqno = parent->m_seqno;
 817         c->m_init_flag = 0;
 818         c->m_last_resultCount = 0;
 819         c->m_last_ok = 0;
 820         c->m_cache.clear();
 821         c->m_sr_transform = 0;
 822         c->m_waiting = 0;
 823         c->m_resultSetStartPoint = 0;
 824         (parent->m_seqno)++;
 825         if (c->client(m_proxyTarget))
 826         {
 827             delete c;
 828             return 0;
 829         }
 830         c->m_target_idletime = m_target_idletime;
 831         c->timeout(30);
 832
 833         if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
 834             c->set_APDU_yazlog(1);
 835         else
 836             c->set_APDU_yazlog(0);
 837
 838         c->set_idAuthentication(apdu);
 839     }
 840     yaz_log(YLOG_DEBUG, "get_client 3 %p %p", this, c);
 841     return c;
 842 }
 843
 844 void Yaz_Proxy::display_diagrecs(Z_DiagRec **pp, int num)
 845 {
 846     int i;
 847     for (i = 0; i<num; i++)
 848     {
 849         Z_DefaultDiagFormat *r;
 850         Z_DiagRec *p = pp[i];
 851         if (p->which != Z_DiagRec_defaultFormat)
 852         {
 853             yaz_log(YLOG_LOG, "%sError no diagnostics", m_session_str);
 854             return;
 855         }
 856         else
 857             r = p->u.defaultFormat;
 858         switch (r->which)
 859         {
 860         case Z_DefaultDiagFormat_v2Addinfo:
 861             yaz_log(YLOG_LOG, "%sError %d %s:%s",
 862                     m_session_str,
 863                     *r->condition, diagbib1_str(*r->condition),
 864                     r->u.v2Addinfo);
 865             break;
 866         case Z_DefaultDiagFormat_v3Addinfo:
 867             yaz_log(YLOG_LOG, "%sError %d %s:%s",
 868                     m_session_str,
 869                     *r->condition, diagbib1_str(*r->condition),
 870                     r->u.v3Addinfo);
 871             break;
 872         }
 873     }
 874 }
 875
 876 int Yaz_Proxy::convert_xsl(Z_NamePlusRecordList *p, Z_APDU *apdu)
 877 {
 878     if (!m_stylesheet_xsp || p->num_records <= 0)
 879     {
 880         return 0;  /* no XSLT to be done ... */
 881     }
 882
 883     m_stylesheet_offset = 0;
 884     m_stylesheet_nprl = p;
 885     m_stylesheet_apdu = apdu;
 886     m_timeout_mode = timeout_xsl;
 887
 888     timeout(0);
 889     return 1;
 890 }
 891
 892 void Yaz_Proxy::convert_xsl_delay()
 893 {
 894 #if YAZ_HAVE_XSLT
 895     Z_NamePlusRecord *npr = m_stylesheet_nprl->records[m_stylesheet_offset];
 896     if (npr->which == Z_NamePlusRecord_databaseRecord)
 897     {
 898         Z_External *r = npr->u.databaseRecord;
 899         if (r->which == Z_External_octet)
 900         {
 901 #if 0
 902             fwrite((char*) r->u.octet_aligned->buf, 1, r->u.octet_aligned->len, stdout);
 903 #endif
 904             xmlDocPtr res, doc = xmlParseMemory(
 905                 (char*) r->u.octet_aligned->buf,
 906                 r->u.octet_aligned->len);
 907
 908
 909             yaz_log(YLOG_LOG, "%sXSLT convert %d",
 910                     m_session_str, m_stylesheet_offset);
 911             res = xsltApplyStylesheet((xsltStylesheetPtr) m_stylesheet_xsp,
 912                                       doc, 0);
 913
 914             if (res)
 915             {
 916                 xmlChar *out_buf;
 917                 int out_len;
 918                 xmlDocDumpFormatMemory(res, &out_buf, &out_len, 1);
 919                 m_stylesheet_nprl->records[m_stylesheet_offset]->
 920                     u.databaseRecord =
 921                     z_ext_record_oid(odr_encode(), yaz_oid_recsyn_xml,
 922                                      (char*) out_buf, out_len);
 923                 xmlFree(out_buf);
 924                 xmlFreeDoc(res);
 925             }
 926
 927             xmlFreeDoc(doc);
 928         }
 929     }
 930 #endif
 931     m_stylesheet_offset++;
 932     if (m_stylesheet_offset == m_stylesheet_nprl->num_records)
 933     {
 934         m_timeout_mode = timeout_normal;
 935         m_stylesheet_nprl = 0;
 936 #if YAZ_HAVE_XSLT
 937         if (m_stylesheet_xsp)
 938             xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
 939 #endif
 940         m_stylesheet_xsp = 0;
 941         timeout(m_client_idletime);
 942         send_PDU_convert(m_stylesheet_apdu);
 943     }
 944     else
 945         timeout(0);
 946 }
 947
 948 void Yaz_Proxy::convert_to_frontend_type(Z_NamePlusRecordList *p)
 949 {
 950     if (m_frontend_type[0] != -1)
 951     {
 952         int i;
 953         for (i = 0; i < p->num_records; i++)
 954         {
 955             Z_NamePlusRecord *npr = p->records[i];
 956             if (npr->which == Z_NamePlusRecord_databaseRecord)
 957             {
 958                 Z_External *r = npr->u.databaseRecord;
 959                 if (r->which == Z_External_octet)
 960                 {
 961 #if !HAVE_USEMARCON
 962                     if (m_usemarcon_ini_stage1 && *m_usemarcon_ini_stage1)
 963                         yaz_log(YLOG_LOG, "%sError: USEMARCON requested but not available",
 964                             m_session_str);
 965 #endif
 966 #if HAVE_USEMARCON
 967                     yaz_log(YLOG_DEBUG, "%sUSEMARCON stage1=%s stage2=%s",
 968                         m_session_str,
 969                         m_usemarcon_ini_stage1 ? m_usemarcon_ini_stage1 : "(none)",
 970                         m_usemarcon_ini_stage2 ? m_usemarcon_ini_stage2 : "(none)");
 971                     char *converted;
 972                     int convlen;
 973                     if (m_usemarcon->convert(m_usemarcon_ini_stage1, m_usemarcon_ini_stage2,
 974                         (char*) r->u.octet_aligned->buf, r->u.octet_aligned->len,
 975                         &converted, &convlen))
 976                     {
 977                         npr->u.databaseRecord =
 978                             z_ext_record_oid(odr_encode(),
 979                                              m_frontend_type,
 980                                              converted,
 981                                              strlen(converted));
 982                         free(converted);
 983                     }
 984                     else
 985 #endif
 986 /* HAVE_USEMARCON */
 987                     npr->u.databaseRecord =
 988                         z_ext_record_oid(odr_encode(),
 989                                          m_frontend_type,
 990                                          (char*) r->u.octet_aligned->buf,
 991                                          r->u.octet_aligned->len);
 992                 }
 993             }
 994         }
 995     }
 996 }
 997
 998 void Yaz_Proxy::convert_records_charset(Z_NamePlusRecordList *p,
 999                                         const char *backend_charset)
1000 {
1001     int sel =   m_charset_converter->get_client_charset_selected();
1002     const char *client_record_charset =
1003         m_charset_converter->get_client_query_charset();
1004     if (sel && backend_charset && client_record_charset &&
1005         strcmp(backend_charset, client_record_charset))
1006     {
1007         int i;
1008         yaz_iconv_t cd = yaz_iconv_open(client_record_charset,
1009                                         backend_charset);
1010         yaz_marc_t mt = yaz_marc_create();
1011         yaz_marc_xml(mt, YAZ_MARC_ISO2709);
1012         yaz_marc_iconv(mt, cd);
1013         for (i = 0; i < p->num_records; i++)
1014         {
1015             Z_NamePlusRecord *npr = p->records[i];
1016             if (npr->which == Z_NamePlusRecord_databaseRecord)
1017             {
1018                 Z_External *r = npr->u.databaseRecord;
1019                 const Odr_oid *oid = r->direct_reference;
1020                 if (!oid)
1021                     continue;
1022
1023                 if (!oid_oidcmp(oid, yaz_oid_recsyn_sutrs))
1024                 {
1025                     WRBUF w = wrbuf_alloc();
1026
1027                     wrbuf_iconv_write(w, cd,  (char*) r->u.octet_aligned->buf,
1028                                       r->u.octet_aligned->len);
1029                     npr->u.databaseRecord =
1030                         z_ext_record_oid(odr_encode(), oid, wrbuf_buf(w),
1031                                          wrbuf_len(w));
1032                     wrbuf_destroy(w);
1033                 }
1034                 else if (!oid_oidcmp(oid, yaz_oid_recsyn_xml))
1035                 {
1036                     ;
1037                 }
1038                 else if (r->which == Z_External_octet)
1039                 {
1040                     size_t rlen;
1041                     const char *result;
1042                     if (yaz_marc_decode_buf(mt,
1043                                             (char*) r->u.octet_aligned->buf,
1044                                             r->u.octet_aligned->len,
1045                                             &result, &rlen))
1046                     {
1047                         npr->u.databaseRecord =
1048                             z_ext_record_oid(odr_encode(), oid, result, rlen);
1049                         yaz_log(YLOG_LOG, "%sRecoding MARC record",
1050                                 m_session_str);
1051                     }
1052                 }
1053             }
1054         }
1055         if (cd)
1056             yaz_iconv_close(cd);
1057         yaz_marc_destroy(mt);
1058     }
1059 }
1060
1061 void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p,
1062                                    const char *backend_charset)
1063 {
1064     int i;
1065     if (!backend_charset)
1066         backend_charset = "MARC-8";
1067     yaz_iconv_t cd = yaz_iconv_open("UTF-8", backend_charset);
1068     yaz_marc_t mt = yaz_marc_create();
1069     yaz_marc_xml(mt, YAZ_MARC_MARCXML);
1070     yaz_marc_iconv(mt, cd);
1071     for (i = 0; i < p->num_records; i++)
1072     {
1073         Z_NamePlusRecord *npr = p->records[i];
1074         if (npr->which == Z_NamePlusRecord_databaseRecord)
1075         {
1076             Z_External *r = npr->u.databaseRecord;
1077             if (r->which == Z_External_OPAC)
1078             {
1079                 WRBUF w = wrbuf_alloc();
1080
1081                 yaz_opac_decode_wrbuf(mt, r->u.opac, w);
1082                 npr->u.databaseRecord = z_ext_record_oid(
1083                     odr_encode(), yaz_oid_recsyn_xml,
1084                     wrbuf_buf(w), wrbuf_len(w));
1085                 wrbuf_destroy(w);
1086             }
1087             else if (r->which == Z_External_octet)
1088             {
1089                 size_t rlen;
1090                 const char *result;
1091                 if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
1092                                         r->u.octet_aligned->len,
1093                                         &result, &rlen))
1094                 {
1095                     npr->u.databaseRecord =
1096                         z_ext_record_oid(odr_encode(), yaz_oid_recsyn_xml,
1097                                          result, rlen);
1098                 }
1099             }
1100         }
1101     }
1102     if (cd)
1103         yaz_iconv_close(cd);
1104     yaz_marc_destroy(mt);
1105 }
1106
1107 void Yaz_Proxy::logtime()
1108 {
1109 #if HAVE_GETTIMEOFDAY
1110     struct timeval *tv = (struct timeval*) m_time_tv;
1111     if (tv->tv_sec)
1112     {
1113         struct timeval tv1;
1114         gettimeofday(&tv1, 0);
1115         long diff = (tv1.tv_sec - tv->tv_sec)*1000000 +
1116             (tv1.tv_usec - tv->tv_usec);
1117         if (diff >= 0)
1118             yaz_log(YLOG_LOG, "%sElapsed %ld.%03ld", m_session_str,
1119                     diff/1000000, (diff/1000)%1000);
1120     }
1121     tv->tv_sec = 0;
1122     tv->tv_usec = 0;
1123 #endif
1124 }
1125
1126 int Yaz_Proxy::send_http_response(int code)
1127 {
1128     ODR o = odr_encode();
1129     Z_GDU *gdu = z_get_HTTP_Response(o, code);
1130     Z_HTTP_Response *hres = gdu->u.HTTP_Response;
1131     if (m_http_version)
1132         hres->version = odr_strdup(o, m_http_version);
1133     if (m_http_keepalive)
1134         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
1135     else
1136         timeout(0);
1137     if (code == 401)
1138         z_HTTP_header_add(o, &hres->headers, "WWW-Authenticate",
1139                           "Basic realm=\"YAZ Proxy\"");
1140
1141
1142     if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1143     {
1144         yaz_log (YLOG_LOG, "%sSending %s to client", m_session_str,
1145                  gdu_name(gdu));
1146     }
1147     int len;
1148     int r = send_GDU(gdu, &len);
1149     m_bytes_sent += len;
1150     m_bw_stat.add_bytes(len);
1151     logtime();
1152
1153     recv_GDU_more(true);
1154
1155     return r;
1156 }
1157
1158 int Yaz_Proxy::send_srw_response(Z_SRW_PDU *srw_pdu, int http_code /* = 200 */)
1159 {
1160     ODR o = odr_encode();
1161     const char *ctype = "text/xml";
1162     Z_GDU *gdu = z_get_HTTP_Response(o, http_code);
1163     Z_HTTP_Response *hres = gdu->u.HTTP_Response;
1164     if (m_http_version)
1165         hres->version = odr_strdup(o, m_http_version);
1166     z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1167     if (m_http_keepalive)
1168         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
1169     else
1170         timeout(0);
1171     if (http_code == 401)
1172         z_HTTP_header_add(o, &hres->headers, "WWW-Authenticate", "Basic realm=\"YAZ Proxy\"");
1173
1174     static Z_SOAP_Handler soap_handlers[2] = {
1175 #if YAZ_HAVE_XSLT
1176         {"http://www.loc.gov/zing/srw/", 0,
1177          (Z_SOAP_fun) yaz_srw_codec},
1178 #endif
1179         {0, 0, 0}
1180     };
1181
1182     Z_SOAP *soap_package = (Z_SOAP*) odr_malloc(o, sizeof(Z_SOAP));
1183     soap_package->which = Z_SOAP_generic;
1184     soap_package->u.generic =
1185         (Z_SOAP_Generic *) odr_malloc(o,  sizeof(*soap_package->u.generic));
1186     soap_package->u.generic->no = 0;
1187     soap_package->u.generic->ns = soap_handlers[0].ns;
1188     soap_package->u.generic->p = (void *) srw_pdu;
1189     soap_package->ns = m_soap_ns;
1190     z_soap_codec_enc_xsl(o, &soap_package,
1191                          &hres->content_buf, &hres->content_len,
1192                          soap_handlers, 0, m_s2z_stylesheet);
1193     if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1194     {
1195         yaz_log(YLOG_LOG, "%sSending %s to client", m_session_str,
1196                 gdu_name(gdu));
1197     }
1198     int len;
1199     int r = send_GDU(gdu, &len);
1200     m_bytes_sent += len;
1201     m_bw_stat.add_bytes(len);
1202     logtime();
1203
1204     recv_GDU_more(true);
1205
1206     return r;
1207 }
1208
1209 int Yaz_Proxy::send_to_srw_client_error(int srw_error, const char *add)
1210 {
1211     ODR o = odr_encode();
1212     Z_SRW_diagnostic *diagnostic = (Z_SRW_diagnostic *)
1213         odr_malloc(o, sizeof(*diagnostic));
1214     int num_diagnostic = 1;
1215     yaz_mk_std_diagnostic(o, diagnostic, srw_error, add);
1216     return send_srw_search_response(diagnostic, num_diagnostic, srw_error == 3 ? 401 : 200);
1217 }
1218
1219 int Yaz_Proxy::z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
1220                              Z_DefaultDiagFormat *ddf)
1221 {
1222     int bib1_code = *ddf->condition;
1223     if (bib1_code == 109)
1224         return 404;
1225     srw_res->num_diagnostics = 1;
1226     srw_res->diagnostics = (Z_SRW_diagnostic *)
1227         odr_malloc(o, sizeof(*srw_res->diagnostics));
1228     yaz_mk_std_diagnostic(o, srw_res->diagnostics,
1229                           yaz_diag_bib1_to_srw(*ddf->condition),
1230                           ddf->u.v2Addinfo);
1231     return 0;
1232 }
1233
1234 int Yaz_Proxy::send_to_srw_client_ok(int hits, Z_Records *records, int start)
1235 {
1236     ODR o = odr_encode();
1237     Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
1238     Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
1239
1240     srw_res->numberOfRecords = odr_intdup (o, hits);
1241     if (records && records->which == Z_Records_DBOSD)
1242     {
1243         srw_res->num_records =
1244             records->u.databaseOrSurDiagnostics->num_records;
1245         int i;
1246         srw_res->records = (Z_SRW_record *)
1247             odr_malloc(o, srw_res->num_records * sizeof(Z_SRW_record));
1248         for (i = 0; i < srw_res->num_records; i++)
1249         {
1250             Z_NamePlusRecord *npr = records->u.databaseOrSurDiagnostics->records[i];
1251             if (npr->which != Z_NamePlusRecord_databaseRecord)
1252             {
1253                 srw_res->records[i].recordSchema = "diagnostic";
1254                 srw_res->records[i].recordPacking = m_s2z_packing;
1255                 srw_res->records[i].recordData_buf = "67";
1256                 srw_res->records[i].recordData_len = 2;
1257                 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
1258                 continue;
1259             }
1260             Z_External *r = npr->u.databaseRecord;
1261
1262             if (r->which == Z_External_octet
1263                 && !oid_oidcmp(r->direct_reference, yaz_oid_recsyn_xml))
1264             {
1265                 srw_res->records[i].recordSchema = m_schema;
1266                 srw_res->records[i].recordPacking = m_s2z_packing;
1267                 srw_res->records[i].recordData_buf = (char*)
1268                     r->u.octet_aligned->buf;
1269                 srw_res->records[i].recordData_len = r->u.octet_aligned->len;
1270                 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
1271             }
1272             else
1273             {
1274                 srw_res->records[i].recordSchema = "diagnostic";
1275                 srw_res->records[i].recordPacking = m_s2z_packing;
1276                 srw_res->records[i].recordData_buf = "67";
1277                 srw_res->records[i].recordData_len = 2;
1278                 srw_res->records[i].recordPosition = odr_intdup(o, i+start);
1279             }
1280         }
1281     }
1282     if (records && records->which == Z_Records_NSD)
1283     {
1284         int http_code;
1285         http_code = z_to_srw_diag(odr_encode(), srw_res,
1286                                    records->u.nonSurrogateDiagnostic);
1287         if (http_code)
1288             return send_http_response(http_code);
1289     }
1290     return send_srw_response(srw_pdu);
1291
1292 }
1293
1294 int Yaz_Proxy::send_srw_search_response(Z_SRW_diagnostic *diagnostics,
1295                                         int num_diagnostics, int http_code /* = 200 */)
1296 {
1297     ODR o = odr_encode();
1298     Z_SRW_PDU *srw_pdu = yaz_srw_get(o, Z_SRW_searchRetrieve_response);
1299     Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
1300
1301     srw_res->num_diagnostics = num_diagnostics;
1302     srw_res->diagnostics = diagnostics;
1303     return send_srw_response(srw_pdu, http_code);
1304 }
1305
1306 int Yaz_Proxy::send_srw_explain_response(Z_SRW_diagnostic *diagnostics,
1307                                         int num_diagnostics)
1308 {
1309     Yaz_ProxyConfig *cfg = check_reconfigure();
1310     if (cfg)
1311     {
1312         int len;
1313         char *b = cfg->get_explain_doc(odr_encode(), 0 /* target */,
1314                                        m_s2z_database, &len);
1315         if (b)
1316         {
1317             Z_SRW_PDU *res = yaz_srw_get(odr_encode(), Z_SRW_explain_response);
1318             Z_SRW_explainResponse *er = res->u.explain_response;
1319
1320             er->record.recordData_buf = b;
1321             er->record.recordData_len = len;
1322             er->record.recordPacking = m_s2z_packing;
1323             er->record.recordSchema = "http://explain.z3950.org/dtd/2.0/";
1324
1325             er->diagnostics = diagnostics;
1326             er->num_diagnostics = num_diagnostics;
1327             return send_srw_response(res);
1328         }
1329     }
1330     return send_http_response(404);
1331 }
1332
1333 int Yaz_Proxy::send_PDU_convert(Z_APDU *apdu)
1334 {
1335     if (m_http_version)
1336     {
1337         if (apdu->which == Z_APDU_initResponse)
1338         {
1339             Z_InitResponse *res = apdu->u.initResponse;
1340             if (*res->result == 0)
1341             {
1342                 send_to_srw_client_error(3, 0);
1343             }
1344             else if (!m_s2z_search_apdu)
1345             {
1346                 send_srw_explain_response(0, 0);
1347             }
1348             else
1349             {
1350                 handle_incoming_Z_PDU(m_s2z_search_apdu);
1351             }
1352         }
1353         else if (m_s2z_search_apdu && apdu->which == Z_APDU_searchResponse)
1354         {
1355             m_s2z_search_apdu = 0;
1356             Z_SearchResponse *res = apdu->u.searchResponse;
1357             m_s2z_hit_count = *res->resultCount;
1358             if (res->records && res->records->which == Z_Records_NSD)
1359             {
1360                 send_to_srw_client_ok(0, res->records, 1);
1361             }
1362             else if (m_s2z_present_apdu && m_s2z_hit_count > 0)
1363             {
1364                 // adjust
1365                 Z_PresentRequest *pr = m_s2z_present_apdu->u.presentRequest;
1366
1367                 if (*pr->resultSetStartPoint <= m_s2z_hit_count)
1368                 {
1369                     if (*pr->numberOfRecordsRequested+ *pr->resultSetStartPoint
1370                         > m_s2z_hit_count)
1371                         *pr->numberOfRecordsRequested =
1372                             1 + m_s2z_hit_count - *pr->resultSetStartPoint;
1373                 }
1374                 handle_incoming_Z_PDU(m_s2z_present_apdu);
1375             }
1376             else
1377             {
1378                 m_s2z_present_apdu = 0;
1379                 send_to_srw_client_ok(m_s2z_hit_count, res->records, 1);
1380             }
1381         }
1382         else if (m_s2z_present_apdu && apdu->which == Z_APDU_presentResponse)
1383         {
1384             int start =
1385                 *m_s2z_present_apdu->u.presentRequest->resultSetStartPoint;
1386
1387             m_s2z_present_apdu = 0;
1388             Z_PresentResponse *res = apdu->u.presentResponse;
1389             send_to_srw_client_ok(m_s2z_hit_count, res->records, start);
1390         }
1391     }
1392     else
1393     {
1394         int len = 0;
1395         if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1396             yaz_log(YLOG_LOG, "%sSending %s to client", m_session_str,
1397                      apdu_name(apdu));
1398         int r = send_Z_PDU(apdu, &len);
1399         m_bytes_sent += len;
1400         m_bw_stat.add_bytes(len);
1401         logtime();
1402         return r;
1403     }
1404     return 0;
1405 }
1406
1407 int Yaz_Proxy::send_to_client(Z_APDU *apdu)
1408 {
1409     int kill_session = 0;
1410     Z_ReferenceId **new_id = get_referenceIdP(apdu);
1411
1412     if (new_id)
1413         *new_id = m_referenceId;
1414
1415     if (apdu->which == Z_APDU_searchResponse)
1416     {
1417         Z_SearchResponse *sr = apdu->u.searchResponse;
1418         Z_Records *p = sr->records;
1419         if (p && p->which == Z_Records_NSD)
1420         {
1421             Z_DiagRec dr, *dr_p = &dr;
1422             dr.which = Z_DiagRec_defaultFormat;
1423             dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
1424
1425             *sr->searchStatus = 0;
1426             display_diagrecs(&dr_p, 1);
1427         }
1428         else
1429         {
1430             if (p && p->which == Z_Records_DBOSD)
1431             {
1432                 if (m_backend_type
1433 #if HAVE_USEMARCON
1434                     || m_usemarcon_ini_stage1 || m_usemarcon_ini_stage2
1435 #endif
1436                     )
1437                     convert_to_frontend_type(p->u.databaseOrSurDiagnostics);
1438                 if (m_marcxml_mode == marcxml)
1439                     convert_to_marcxml(p->u.databaseOrSurDiagnostics,
1440                                        m_backend_charset);
1441                 else
1442                     convert_records_charset(p->u.databaseOrSurDiagnostics,
1443                                             m_backend_charset);
1444                 if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
1445                     return 0;
1446
1447             }
1448             if (sr->resultCount)
1449             {
1450                 yaz_log(YLOG_LOG, "%s%d hits", m_session_str,
1451                         *sr->resultCount);
1452                 if (*sr->resultCount < 0)
1453                 {
1454                     m_flag_invalid_session = 1;
1455                     kill_session = 1;
1456
1457                     *sr->searchStatus = 0;
1458                     sr->records =
1459                         create_nonSurrogateDiagnostics(odr_encode(), 2, 0);
1460                     *sr->resultCount = 0;
1461                 }
1462             }
1463         }
1464     }
1465     else if (apdu->which == Z_APDU_presentResponse)
1466     {
1467         Z_PresentResponse *sr = apdu->u.presentResponse;
1468         Z_Records *p = sr->records;
1469         if (p && p->which == Z_Records_NSD)
1470         {
1471             Z_DiagRec dr, *dr_p = &dr;
1472             dr.which = Z_DiagRec_defaultFormat;
1473             dr.u.defaultFormat = p->u.nonSurrogateDiagnostic;
1474             if (*sr->presentStatus == Z_PresentStatus_success)
1475                 *sr->presentStatus = Z_PresentStatus_failure;
1476             display_diagrecs(&dr_p, 1);
1477         }
1478         if (p && p->which == Z_Records_DBOSD)
1479         {
1480             if (m_backend_type
1481 #if HAVE_USEMARCON
1482                 || m_usemarcon_ini_stage1 || m_usemarcon_ini_stage2
1483 #endif
1484                 )
1485                 convert_to_frontend_type(p->u.databaseOrSurDiagnostics);
1486             if (m_marcxml_mode == marcxml)
1487                 convert_to_marcxml(p->u.databaseOrSurDiagnostics,
1488                                    m_backend_charset);
1489             else
1490                 convert_records_charset(p->u.databaseOrSurDiagnostics,
1491                                         m_backend_charset);
1492             if (convert_xsl(p->u.databaseOrSurDiagnostics, apdu))
1493                 return 0;
1494         }
1495     }
1496     else if (apdu->which == Z_APDU_initResponse)
1497     {
1498         //Get and check negotiation record
1499         //from init response.
1500         handle_charset_lang_negotiation(apdu);
1501
1502         if (m_initRequest_options)
1503         {
1504             Z_Options *nopt =
1505                 (Odr_bitmask *)odr_malloc(odr_encode(),
1506                                           sizeof(Odr_bitmask));
1507             ODR_MASK_ZERO(nopt);
1508
1509             int i;
1510             for (i = 0; i<24; i++)
1511                 if (ODR_MASK_GET(m_initRequest_options, i) &&
1512                     ODR_MASK_GET(apdu->u.initResponse->options, i))
1513                     ODR_MASK_SET(nopt, i);
1514             apdu->u.initResponse->options = nopt;
1515         }
1516         if (m_initRequest_version)
1517         {
1518             Z_ProtocolVersion *nopt =
1519                 (Odr_bitmask *)odr_malloc(odr_encode(),
1520                                           sizeof(Odr_bitmask));
1521             ODR_MASK_ZERO(nopt);
1522
1523             int i;
1524             for (i = 0; i<8; i++)
1525                 if (ODR_MASK_GET(m_initRequest_version, i) &&
1526                     ODR_MASK_GET(apdu->u.initResponse->protocolVersion, i))
1527                     ODR_MASK_SET(nopt, i);
1528             apdu->u.initResponse->protocolVersion = nopt;
1529         }
1530         apdu->u.initResponse->preferredMessageSize =
1531             odr_intdup(odr_encode(),
1532                        m_client->m_initResponse_preferredMessageSize >
1533                        m_initRequest_preferredMessageSize ?
1534                        m_initRequest_preferredMessageSize :
1535                        m_client->m_initResponse_preferredMessageSize);
1536         apdu->u.initResponse->maximumRecordSize =
1537             odr_intdup(odr_encode(),
1538                        m_client->m_initResponse_maximumRecordSize >
1539                        m_initRequest_maximumRecordSize ?
1540                        m_initRequest_maximumRecordSize :
1541                        m_client->m_initResponse_maximumRecordSize);
1542     }
1543
1544     int r = send_PDU_convert(apdu);
1545     if (r)
1546         return r;
1547     if (kill_session)
1548     {
1549         delete m_client;
1550         m_client = 0;
1551         m_parent->pre_init();
1552     }
1553     return r;
1554 }
1555
1556 void Yaz_ProxyClient::set_idAuthentication(Z_APDU *apdu)
1557 {
1558     Z_IdAuthentication *t = apdu->u.initRequest->idAuthentication;
1559
1560     odr_reset(m_idAuthentication_odr);
1561     z_IdAuthentication(m_idAuthentication_odr, &t, 1, 0);
1562     m_idAuthentication_ber_buf =
1563         odr_getbuf(m_idAuthentication_odr,
1564                    &m_idAuthentication_ber_size, 0);
1565 }
1566
1567 bool Yaz_ProxyClient::compare_charset(Z_APDU *apdu)
1568 {
1569     return true;
1570 }
1571
1572 bool Yaz_ProxyClient::compare_idAuthentication(Z_APDU *apdu)
1573 {
1574     Z_IdAuthentication *t = apdu->u.initRequest->idAuthentication;
1575     ODR odr = odr_createmem(ODR_ENCODE);
1576
1577     z_IdAuthentication(odr, &t, 1, 0);
1578     int sz;
1579     char *buf = odr_getbuf(odr, &sz, 0);
1580     if (buf && m_idAuthentication_ber_buf
1581         && sz == m_idAuthentication_ber_size
1582         && !memcmp(m_idAuthentication_ber_buf, buf, sz))
1583     {
1584         odr_destroy(odr);
1585         return true;
1586     }
1587     odr_destroy(odr);
1588     if (!buf && !m_idAuthentication_ber_buf)
1589         return true;
1590     return false;
1591 }
1592
1593 int Yaz_ProxyClient::send_to_target(Z_APDU *apdu)
1594 {
1595     int len = 0;
1596     const char *apdu_name_tmp = apdu_name(apdu);
1597     int r = send_Z_PDU(apdu, &len);
1598     if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
1599         yaz_log(YLOG_LOG, "%sSending %s to %s %d bytes",
1600                  get_session_str(),
1601                  apdu_name_tmp, get_hostname(), len);
1602     m_bytes_sent += len;
1603     return r;
1604 }
1605
1606 Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
1607 {
1608     if (apdu->which == Z_APDU_presentRequest)
1609     {
1610         Z_PresentRequest *pr = apdu->u.presentRequest;
1611         int toget = *pr->numberOfRecordsRequested;
1612         int start = *pr->resultSetStartPoint;
1613
1614         yaz_log(YLOG_LOG, "%sPresent %s %d+%d", m_session_str,
1615                 pr->resultSetId, start, toget);
1616
1617         if (*m_parent->m_optimize == '0')
1618             return apdu;
1619
1620         if (!m_client->m_last_resultSetId)
1621         {
1622             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1623             new_apdu->u.presentResponse->records =
1624                 create_nonSurrogateDiagnostics(
1625                     odr_encode(),
1626                     YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
1627                     pr->resultSetId);
1628             send_to_client(new_apdu);
1629             return 0;
1630         }
1631         if (start < 1 || toget < 0)
1632         {
1633             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1634             new_apdu->u.presentResponse->records =
1635                 create_nonSurrogateDiagnostics(
1636                     odr_encode(),
1637                     YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE,
1638                     0);
1639             send_to_client(new_apdu);
1640             return 0;
1641         }
1642         if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
1643         {
1644             if (start+toget-1 > m_client->m_last_resultCount)
1645             {
1646                 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1647                 new_apdu->u.presentResponse->records =
1648                     create_nonSurrogateDiagnostics(
1649                         odr_encode(),
1650                         YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE,
1651                         0);
1652                 send_to_client(new_apdu);
1653                 return 0;
1654             }
1655             Z_NamePlusRecordList *npr;
1656 #if 0
1657             yaz_log(YLOG_LOG, "%sCache lookup %d+%d syntax=%s",
1658                     m_session_str, start, toget, yaz_z3950oid_to_str(
1659                         pr->preferredRecordSyntax, &oclass));
1660 #endif
1661             if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
1662                                           pr->preferredRecordSyntax,
1663                                           pr->recordComposition))
1664             {
1665                 yaz_log(YLOG_LOG, "%sReturned cached records for present request",
1666                          m_session_str);
1667                 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
1668                 new_apdu->u.presentResponse->referenceId = pr->referenceId;
1669
1670                 new_apdu->u.presentResponse->numberOfRecordsReturned
1671                     = odr_intdup(odr_encode(), toget);
1672
1673                 new_apdu->u.presentResponse->records = (Z_Records*)
1674                     odr_malloc(odr_encode(), sizeof(Z_Records));
1675                 new_apdu->u.presentResponse->records->which = Z_Records_DBOSD;
1676                 new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr;
1677                 new_apdu->u.presentResponse->nextResultSetPosition =
1678                     odr_intdup(odr_encode(), start+toget);
1679
1680                 send_to_client(new_apdu);
1681                 return 0;
1682             }
1683         }
1684     }
1685
1686     if (apdu->which != Z_APDU_searchRequest)
1687         return apdu;
1688     Z_SearchRequest *sr = apdu->u.searchRequest;
1689     Yaz_Z_Query *this_query = new Yaz_Z_Query;
1690     Yaz_Z_Databases this_databases;
1691
1692     this_databases.set(sr->num_databaseNames, (const char **)
1693                        sr->databaseNames);
1694
1695     this_query->set_Z_Query(sr->query);
1696
1697     // Check for non-negative piggyback params.
1698     if (*sr->smallSetUpperBound < 0
1699         || *sr->largeSetLowerBound < 0
1700         || *sr->mediumSetPresentNumber < 0)
1701     {
1702         Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1703         // Not a present request.. But can't find better diagnostic
1704         new_apdu->u.searchResponse->records =
1705             create_nonSurrogateDiagnostics(
1706                 odr_encode(),
1707                 YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, 0);
1708         send_to_client(new_apdu);
1709         return 0;
1710     }
1711
1712     char query_str[4096];
1713     this_query->print(query_str, sizeof(query_str)-1);
1714     yaz_log(YLOG_LOG, "%sSearch %s", m_session_str, query_str);
1715
1716     if (*m_parent->m_optimize != '0' &&
1717         m_client->m_last_ok && m_client->m_last_query &&
1718         m_client->m_last_query->match(this_query) &&
1719         !strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
1720         m_client->m_last_databases.match(this_databases))
1721     {
1722         delete this_query;
1723         if (m_client->m_last_resultCount > *sr->smallSetUpperBound &&
1724             m_client->m_last_resultCount < *sr->largeSetLowerBound)
1725         {
1726             Z_NamePlusRecordList *npr;
1727             int toget = *sr->mediumSetPresentNumber;
1728             Z_RecordComposition *comp = 0;
1729
1730             if (toget > m_client->m_last_resultCount)
1731                 toget = m_client->m_last_resultCount;
1732
1733             if (sr->mediumSetElementSetNames)
1734             {
1735                 comp = (Z_RecordComposition *)
1736                     odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1737                 comp->which = Z_RecordComp_simple;
1738                 comp->u.simple = sr->mediumSetElementSetNames;
1739             }
1740
1741             if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1742                                           sr->preferredRecordSyntax, comp))
1743             {
1744                 yaz_log(YLOG_LOG, "%sReturned cached records for medium set",
1745                          m_session_str);
1746                 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1747                 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1748                 new_apdu->u.searchResponse->resultCount =
1749                     &m_client->m_last_resultCount;
1750
1751                 new_apdu->u.searchResponse->numberOfRecordsReturned
1752                     = odr_intdup(odr_encode(), toget);
1753
1754                 new_apdu->u.searchResponse->presentStatus =
1755                     odr_intdup(odr_encode(), Z_PresentStatus_success);
1756                 new_apdu->u.searchResponse->records = (Z_Records*)
1757                     odr_malloc(odr_encode(), sizeof(Z_Records));
1758                 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1759                 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1760                 new_apdu->u.searchResponse->nextResultSetPosition =
1761                     odr_intdup(odr_encode(), toget+1);
1762                 send_to_client(new_apdu);
1763                 return 0;
1764             }
1765             else
1766             {
1767                 // medium Set
1768                 // send present request (medium size)
1769                 yaz_log(YLOG_LOG, "%sOptimizing search for medium set",
1770                          m_session_str);
1771
1772                 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1773                 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1774                 pr->referenceId = sr->referenceId;
1775                 pr->resultSetId = sr->resultSetName;
1776                 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1777                 *pr->numberOfRecordsRequested = toget;
1778                 pr->recordComposition = comp;
1779                 m_client->m_sr_transform = 1;
1780                 return new_apdu;
1781             }
1782         }
1783         else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
1784             m_client->m_last_resultCount <= 0)
1785         {
1786             // large set. Return pseudo-search response immediately
1787             yaz_log(YLOG_LOG, "%sOptimizing search for large set",
1788                      m_session_str);
1789             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1790             new_apdu->u.searchResponse->referenceId = sr->referenceId;
1791             new_apdu->u.searchResponse->resultCount =
1792                 &m_client->m_last_resultCount;
1793             send_to_client(new_apdu);
1794             return 0;
1795         }
1796         else
1797         {
1798             Z_NamePlusRecordList *npr;
1799             int toget = m_client->m_last_resultCount;
1800             Z_RecordComposition *comp = 0;
1801             // small set
1802             // send a present request (small set)
1803
1804             if (sr->smallSetElementSetNames)
1805             {
1806                 comp = (Z_RecordComposition *)
1807                     odr_malloc(odr_encode(), sizeof(Z_RecordComposition));
1808                 comp->which = Z_RecordComp_simple;
1809                 comp->u.simple = sr->smallSetElementSetNames;
1810             }
1811
1812             if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
1813                                           sr->preferredRecordSyntax, comp))
1814             {
1815                 yaz_log(YLOG_LOG, "%sReturned cached records for small set",
1816                          m_session_str);
1817                 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
1818                 new_apdu->u.searchResponse->referenceId = sr->referenceId;
1819                 new_apdu->u.searchResponse->resultCount =
1820                     &m_client->m_last_resultCount;
1821
1822                 new_apdu->u.searchResponse->numberOfRecordsReturned
1823                     = odr_intdup(odr_encode(), toget);
1824
1825                 new_apdu->u.searchResponse->presentStatus =
1826                     odr_intdup(odr_encode(), Z_PresentStatus_success);
1827                 new_apdu->u.searchResponse->records = (Z_Records*)
1828                     odr_malloc(odr_encode(), sizeof(Z_Records));
1829                 new_apdu->u.searchResponse->records->which = Z_Records_DBOSD;
1830                 new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr;
1831                 new_apdu->u.searchResponse->nextResultSetPosition =
1832                     odr_intdup(odr_encode(), toget+1);
1833                 send_to_client(new_apdu);
1834                 return 0;
1835             }
1836             else
1837             {
1838                 yaz_log(YLOG_LOG, "%sOptimizing search for small set",
1839                          m_session_str);
1840                 Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
1841                 Z_PresentRequest *pr = new_apdu->u.presentRequest;
1842                 pr->referenceId = sr->referenceId;
1843                 pr->resultSetId = sr->resultSetName;
1844                 pr->preferredRecordSyntax = sr->preferredRecordSyntax;
1845                 *pr->numberOfRecordsRequested = toget;
1846                 pr->recordComposition = comp;
1847                 m_client->m_sr_transform = 1;
1848                 return new_apdu;
1849             }
1850         }
1851     }
1852     else  // query doesn't match
1853     {
1854         delete m_client->m_last_query;
1855         m_client->m_last_query = this_query;
1856         m_client->m_last_ok = 0;
1857         m_client->m_cache.clear();
1858         m_client->m_resultSetStartPoint = 0;
1859
1860         xfree(m_client->m_last_resultSetId);
1861         m_client->m_last_resultSetId = xstrdup(sr->resultSetName);
1862
1863         m_client->m_last_databases.set(sr->num_databaseNames,
1864                                        (const char **) sr->databaseNames);
1865     }
1866     return apdu;
1867 }
1868
1869
1870 void Yaz_Proxy::inc_request_no()
1871 {
1872     m_request_no++;
1873     char *cp = m_session_str + strlen(m_session_str)-1;
1874     if (*cp == ' ')
1875         cp--;
1876     while (*cp && *cp != ' ')
1877         cp--;
1878     if (*cp)
1879         sprintf(cp+1, "%d ", m_request_no);
1880 }
1881
1882 void Yaz_Proxy::recv_GDU(Z_GDU *apdu, int len)
1883 {
1884     inc_request_no();
1885
1886     m_bytes_recv += len;
1887
1888     if (m_log_mask & PROXY_LOG_REQ_CLIENT)
1889         yaz_log(YLOG_LOG, "%sReceiving %s from client %d bytes",
1890                  m_session_str, gdu_name(apdu), len);
1891
1892 #if 0
1893     // try to make a _bad_ attribute set ID .. Don't enable this in prod.
1894     if (apdu->which == Z_GDU_Z3950
1895         && apdu->u.z3950->which == Z_APDU_searchRequest)
1896     {
1897         Z_SearchRequest *req = apdu->u.z3950->u.searchRequest;
1898         if (req->query && req->query->which == Z_Query_type_1)
1899         {
1900             Z_RPNQuery *rpnquery = req->query->u.type_1;
1901             if (rpnquery->attributeSetId)
1902             {
1903                 rpnquery->attributeSetId[0] = -2;
1904                 rpnquery->attributeSetId[1] = -1;
1905                 yaz_log(YLOG_WARN, "%sBAD FIXUP TEST", m_session_str);
1906             }
1907         }
1908     }
1909 #endif
1910
1911 #if HAVE_GETTIMEOFDAY
1912     gettimeofday((struct timeval *) m_time_tv, 0);
1913 #endif
1914     m_bw_stat.add_bytes(len);
1915     m_pdu_stat.add_bytes(1);
1916
1917     GDU *gdu = new GDU(apdu);
1918
1919     if (gdu->get() == 0)
1920     {
1921         delete gdu;
1922         yaz_log(YLOG_LOG, "%sUnable to encode package", m_session_str);
1923         m_in_queue.clear();
1924         dec_ref();
1925         return;
1926     }
1927     m_in_queue.enqueue(gdu);
1928     recv_GDU_more(false);
1929 }
1930
1931 void Yaz_Proxy::HTTP_Forwarded(Z_GDU *z_gdu)
1932 {
1933     if (z_gdu->which == Z_GDU_HTTP_Request)
1934     {
1935         Z_HTTP_Request *hreq = z_gdu->u.HTTP_Request;
1936         const char *x_forwarded_for =
1937             z_HTTP_header_lookup(hreq->headers, "X-Forwarded-For");
1938         if (x_forwarded_for)
1939         {
1940             xfree(m_peername);
1941             m_peername = (char*) xmalloc(strlen(x_forwarded_for)+5);
1942             sprintf(m_peername, "tcp:%s", x_forwarded_for);
1943
1944             yaz_log(YLOG_LOG, "%sHTTP Forwarded from %s", m_session_str,
1945                     m_peername);
1946             if (m_log_mask & PROXY_LOG_IP_CLIENT)
1947                 sprintf(m_session_str, "%ld:%d %.80s %d ",
1948                         (long) time(0), m_session_no, m_peername, m_request_no);
1949             else
1950                 sprintf(m_session_str, "%ld:%d %d ",
1951                         (long) time(0), m_session_no, m_request_no);
1952         }
1953     }
1954 }
1955
1956 void Yaz_Proxy::connect_stat(bool &block, int &reduce)
1957 {
1958
1959     m_parent->m_connect.cleanup(false);
1960     m_parent->m_connect.add_connect(m_peername);
1961
1962     int connect_total = m_parent->m_connect.get_total(m_peername);
1963     int max_connect = m_parent->m_max_connect;
1964
1965     if (max_connect && connect_total > max_connect)
1966     {
1967         yaz_log(YLOG_LOG, "%sconnect not accepted total=%d max=%d",
1968                 m_session_str, connect_total, max_connect);
1969         block = true;
1970     }
1971     else
1972         block = false;
1973     yaz_log(YLOG_LOG, "%sconnect accepted total=%d", m_session_str,
1974             connect_total);
1975
1976     int limit_connect = m_parent->m_limit_connect;
1977     if (limit_connect)
1978         reduce = connect_total / limit_connect;
1979     else
1980         reduce = 0;
1981 }
1982
1983 void Yaz_Proxy::recv_GDU_reduce(GDU *gdu)
1984 {
1985     HTTP_Forwarded(gdu->get());
1986
1987     int reduce = 0;
1988
1989     if (m_request_no == 1)
1990     {
1991         bool block = false;
1992
1993         connect_stat(block, reduce);
1994
1995         if (block)
1996         {
1997             m_timeout_mode = timeout_busy;
1998             timeout(0);
1999             return;
2000         }
2001     }
2002
2003     int bw_total = m_bw_stat.get_total();
2004     int pdu_total = m_pdu_stat.get_total();
2005     int search_total = m_search_stat.get_total();
2006
2007     assert(m_timeout_mode == timeout_busy);
2008     assert(m_timeout_gdu == 0);
2009
2010     if (m_search_max)
2011         reduce += search_total / m_search_max;
2012     if (m_bw_max)
2013         reduce += (bw_total/m_bw_max);
2014     if (m_pdu_max)
2015     {
2016         if (pdu_total > m_pdu_max)
2017         {
2018             int nreduce = (m_pdu_max >= 60) ? 1 : 60/m_pdu_max;
2019             reduce = (reduce > nreduce) ? reduce : nreduce;
2020         }
2021     }
2022     m_http_version = 0;
2023
2024 #if 0
2025     /* uncomment to force a big reduce */
2026     m_timeout_mode = timeout_reduce;
2027     m_timeout_gdu = gdu;
2028     timeout(3);       // call us reduce seconds later
2029     return;
2030 #endif
2031     if (reduce)
2032     {
2033         yaz_log(YLOG_LOG, "%sdelay=%d bw=%d pdu=%d search=%d limit-bw=%d limit-pdu=%d limit-search=%d",
2034                 m_session_str, reduce, bw_total, pdu_total, search_total,
2035                 m_bw_max, m_pdu_max, m_search_max);
2036
2037         m_timeout_mode = timeout_reduce;
2038         m_timeout_gdu = gdu;
2039         timeout(reduce);       // call us reduce seconds later
2040     }
2041     else
2042         recv_GDU_normal(gdu);
2043 }
2044
2045 void Yaz_Proxy::recv_GDU_more(bool normal)
2046 {
2047     GDU *g;
2048     if (normal && m_timeout_mode == timeout_busy)
2049         m_timeout_mode = timeout_normal;
2050     while (m_timeout_mode == timeout_normal && (g = m_in_queue.dequeue()))
2051     {
2052         m_timeout_mode = timeout_busy;
2053         inc_ref();
2054         recv_GDU_reduce(g);
2055         if (dec_ref())
2056             break;
2057     }
2058 }
2059
2060 void Yaz_Proxy::recv_GDU_normal(GDU *gdu)
2061 {
2062     Z_GDU *apdu = 0;
2063     gdu->move_away_gdu(odr_decode(), &apdu);
2064     delete gdu;
2065
2066     if (apdu->which == Z_GDU_Z3950)
2067         handle_incoming_Z_PDU(apdu->u.z3950);
2068     else if (apdu->which == Z_GDU_HTTP_Request)
2069         handle_incoming_HTTP(apdu->u.HTTP_Request);
2070 }
2071
2072 void Yaz_Proxy::handle_max_record_retrieve(Z_APDU *apdu)
2073 {
2074     if (m_max_record_retrieve)
2075     {
2076         if (apdu->which == Z_APDU_presentRequest)
2077         {
2078             Z_PresentRequest *pr = apdu->u.presentRequest;
2079             if (pr->numberOfRecordsRequested &&
2080                 *pr->numberOfRecordsRequested > m_max_record_retrieve)
2081                 *pr->numberOfRecordsRequested = m_max_record_retrieve;
2082         }
2083     }
2084 }
2085
2086 void Yaz_Proxy::handle_charset_lang_negotiation(Z_APDU *apdu)
2087 {
2088     if (apdu->which == Z_APDU_initRequest)
2089     {
2090         if (m_initRequest_options &&
2091             !ODR_MASK_GET(m_initRequest_options, Z_Options_negotiationModel) &&
2092             (m_proxy_negotiation_charset || m_proxy_negotiation_lang))
2093         {
2094             // There is no negotiation proposal from
2095             // client's side. OK. The proxy negotiation
2096             // in use, only.
2097             Z_InitRequest *initRequest = apdu->u.initRequest;
2098             Z_OtherInformation **otherInfo;
2099             Z_OtherInformationUnit *oi;
2100             get_otherInfoAPDU(apdu, &otherInfo);
2101             oi = update_otherInformation(otherInfo, 1, NULL, 0, 0);
2102             if (oi)
2103             {
2104                 ODR_MASK_SET(initRequest->options,
2105                     Z_Options_negotiationModel);
2106                 oi->which = Z_OtherInfo_externallyDefinedInfo;
2107                 oi->information.externallyDefinedInfo =
2108                 yaz_set_proposal_charneg(odr_encode(),
2109                     (const char**)&m_proxy_negotiation_charset,
2110                     m_proxy_negotiation_charset ? 1:0,
2111                     (const char**)&m_proxy_negotiation_lang,
2112                     m_proxy_negotiation_lang ? 1:0,
2113                     1);
2114             }
2115         }
2116         else if (m_initRequest_options &&
2117                  ODR_MASK_GET(m_initRequest_options,
2118                               Z_Options_negotiationModel) &&
2119                  m_charset_converter->get_target_query_charset())
2120         {
2121             yaz_log(YLOG_LOG, "%sManaged charset negotiation: charset=%s",
2122                     m_session_str,
2123                     m_charset_converter->get_target_query_charset());
2124             Z_InitRequest *initRequest = apdu->u.initRequest;
2125             Z_CharSetandLanguageNegotiation *negotiation =
2126                 yaz_get_charneg_record (initRequest->otherInfo);
2127             if (negotiation &&
2128                 negotiation->which == Z_CharSetandLanguageNegotiation_proposal)
2129             {
2130                 NMEM nmem = nmem_create();
2131                 char **charsets = 0;
2132                 int num_charsets = 0;
2133                 char **langs = 0;
2134                 int num_langs = 0;
2135                 int selected = 0;
2136                 yaz_get_proposal_charneg (nmem, negotiation,
2137                                           &charsets, &num_charsets,
2138                                           &langs, &num_langs, &selected);
2139                 int i;
2140                 for (i = 0; i<num_charsets; i++)
2141                     yaz_log(YLOG_LOG, "%scharset %s", m_session_str,
2142                             charsets[i]);
2143                 for (i = 0; i<num_langs; i++)
2144                     yaz_log(YLOG_LOG, "%slang %s", m_session_str,
2145                             langs[i]);
2146
2147                 const char *t_charset =
2148                     m_charset_converter->get_target_query_charset();
2149                 // sweep through charsets and pick the first supported
2150                 // conversion
2151                 for (i = 0; i<num_charsets; i++)
2152                 {
2153                     const char *c_charset = charsets[i];
2154                     if (!odr_set_charset(odr_decode(), t_charset, c_charset))
2155                         break;
2156                 }
2157                 if (i != num_charsets)
2158                 {
2159                     // got one .. set up ODR for reverse direction
2160                     const char *c_charset = charsets[i];
2161                     odr_set_charset(odr_encode(), c_charset, t_charset);
2162                     m_charset_converter->set_client_query_charset(c_charset);
2163                     m_charset_converter->set_client_charset_selected(selected);
2164                 }
2165                 nmem_destroy(nmem);
2166                 ODR_MASK_CLEAR(m_initRequest_options,
2167                                Z_Options_negotiationModel);
2168                 yaz_del_charneg_record(&initRequest->otherInfo);
2169             }
2170             else
2171             {
2172                 yaz_log(YLOG_WARN, "%sUnable to decode charset package",
2173                         m_session_str);
2174             }
2175         }
2176         else if (m_charset_converter->get_target_query_charset() &&
2177             m_proxy_negotiation_default_charset)
2178         {
2179             m_charset_converter->
2180                 set_client_query_charset(m_proxy_negotiation_default_charset);
2181         }
2182     }
2183     else if (apdu->which == Z_APDU_initResponse)
2184     {
2185         Z_InitResponse *initResponse = apdu->u.initResponse;
2186         Z_OtherInformation **otherInfo;
2187         get_otherInfoAPDU(apdu, &otherInfo);
2188
2189         Z_CharSetandLanguageNegotiation *charneg = 0;
2190
2191         if (otherInfo && *otherInfo &&
2192             ODR_MASK_GET(initResponse->options, Z_Options_negotiationModel)
2193             && (charneg = yaz_get_charneg_record(*otherInfo)))
2194         {
2195             char *charset = 0;
2196             char *lang = 0;
2197             int selected = 0;
2198
2199             yaz_get_response_charneg(m_referenceId_mem, charneg,
2200                 &charset, &lang, &selected);
2201
2202             yaz_log(YLOG_LOG, "%sAccepted charset - '%s' and lang - '%s'",
2203                 m_session_str, (charset)?charset:"none", (lang)?lang:"none");
2204
2205             if (m_initRequest_options &&
2206                 ODR_MASK_GET(m_initRequest_options, Z_Options_negotiationModel))
2207             {
2208                 yaz_log(YLOG_LOG, "%sClient's negotiation record in use",
2209                     m_session_str);
2210             }
2211             else if (m_proxy_negotiation_charset || m_proxy_negotiation_lang)
2212             {
2213                 // negotiation-charset, negotiation-lang
2214                 // elements of config file in use.
2215
2216                 yaz_log(YLOG_LOG, "%sProxy's negotiation record in use",
2217                     m_session_str);
2218
2219                 // clear negotiation option.
2220                 ODR_MASK_CLEAR(initResponse->options, Z_Options_negotiationModel);
2221
2222                 // Delete negotiation (charneg-3) entry.
2223                 yaz_del_charneg_record(otherInfo);
2224             }
2225         }
2226         else
2227         {
2228             if (m_proxy_negotiation_charset || m_proxy_negotiation_lang)
2229             {
2230                 yaz_log(YLOG_LOG, "%sTarget did not honor negotiation",
2231                         m_session_str);
2232             }
2233             else if (m_charset_converter->get_client_query_charset())
2234             {
2235                 Z_OtherInformation **otherInfo;
2236                 Z_OtherInformationUnit *oi;
2237                 get_otherInfoAPDU(apdu, &otherInfo);
2238                 oi = update_otherInformation(otherInfo, 1, NULL, 0, 0);
2239                 if (oi)
2240                 {
2241                     ODR_MASK_SET(initResponse->options,
2242                                  Z_Options_negotiationModel);
2243                     if (m_initRequest_options)
2244                         ODR_MASK_SET(m_initRequest_options,
2245                                      Z_Options_negotiationModel);
2246
2247                     oi->which = Z_OtherInfo_externallyDefinedInfo;
2248                     oi->information.externallyDefinedInfo =
2249                         yaz_set_response_charneg(
2250                             odr_encode(),
2251                             m_charset_converter->get_client_query_charset(),
2252                             0 /* no lang */,
2253                             m_charset_converter->get_client_charset_selected());
2254                 }
2255             }
2256         }
2257     }
2258 }
2259
2260 Z_Records *Yaz_Proxy::create_nonSurrogateDiagnostics(ODR odr,
2261                                                      int error,
2262                                                      const char *addinfo)
2263 {
2264     Z_Records *rec = (Z_Records *)
2265         odr_malloc (odr, sizeof(*rec));
2266     int *err = (int *)
2267         odr_malloc (odr, sizeof(*err));
2268     Z_DiagRec *drec = (Z_DiagRec *)
2269         odr_malloc (odr, sizeof(*drec));
2270     Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
2271         odr_malloc (odr, sizeof(*dr));
2272     *err = error;
2273     rec->which = Z_Records_NSD;
2274     rec->u.nonSurrogateDiagnostic = dr;
2275     dr->diagnosticSetId = odr_oiddup(odr, yaz_oid_diagset_bib_1);
2276     dr->condition = err;
2277     dr->which = Z_DefaultDiagFormat_v2Addinfo;
2278     dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
2279     return rec;
2280 }
2281
2282 Z_APDU *Yaz_Proxy::handle_query_transformation(Z_APDU *apdu)
2283 {
2284     if (apdu->which == Z_APDU_searchRequest &&
2285         apdu->u.searchRequest->query &&
2286         apdu->u.searchRequest->query->which == Z_Query_type_104 &&
2287         apdu->u.searchRequest->query->u.type_104->which == Z_External_CQL)
2288     {
2289         Z_RPNQuery *rpnquery = 0;
2290         Z_SearchRequest *sr = apdu->u.searchRequest;
2291         char *addinfo = 0;
2292
2293         yaz_log(YLOG_LOG, "%sCQL: %s", m_session_str,
2294                 sr->query->u.type_104->u.cql);
2295
2296         int r = m_cql2rpn.query_transform(sr->query->u.type_104->u.cql,
2297                                           &rpnquery, odr_encode(),
2298                                           &addinfo);
2299         if (r == -3)
2300             yaz_log(YLOG_LOG, "%sNo CQL to RPN table", m_session_str);
2301         else if (r)
2302         {
2303             yaz_log(YLOG_LOG, "%sCQL Conversion error %d", m_session_str, r);
2304             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
2305
2306             new_apdu->u.searchResponse->referenceId = sr->referenceId;
2307             new_apdu->u.searchResponse->records =
2308                 create_nonSurrogateDiagnostics(odr_encode(),
2309                                                yaz_diag_srw_to_bib1(r),
2310                                                addinfo);
2311             *new_apdu->u.searchResponse->searchStatus = 0;
2312
2313             send_to_client(new_apdu);
2314
2315             return 0;
2316         }
2317         else
2318         {
2319             sr->query->which = Z_Query_type_1;
2320             sr->query->u.type_1 = rpnquery;
2321         }
2322         return apdu;
2323     }
2324     return apdu;
2325 }
2326
2327 Z_APDU *Yaz_Proxy::handle_target_charset_conversion(Z_APDU *apdu)
2328 {
2329     if (apdu->which == Z_APDU_searchRequest &&
2330         apdu->u.searchRequest->query)
2331     {
2332         if (apdu->u.searchRequest->query->which == Z_Query_type_1
2333             || apdu->u.searchRequest->query->which == Z_Query_type_101)
2334         {
2335             if (m_http_version)
2336                 m_charset_converter->set_client_query_charset("UTF-8");
2337             Z_RPNQuery *rpnquery = apdu->u.searchRequest->query->u.type_1;
2338             m_charset_converter->convert_type_1(rpnquery, odr_encode());
2339         }
2340     }
2341     return apdu;
2342 }
2343
2344
2345 Z_APDU *Yaz_Proxy::handle_query_validation(Z_APDU *apdu)
2346 {
2347     if (apdu->which == Z_APDU_searchRequest)
2348     {
2349         Z_SearchRequest *sr = apdu->u.searchRequest;
2350         int err = 0;
2351         char *addinfo = 0;
2352
2353         Yaz_ProxyConfig *cfg = check_reconfigure();
2354         if (cfg)
2355             err = cfg->check_query(odr_encode(), m_default_target,
2356                                    sr->query, &addinfo);
2357         if (err)
2358         {
2359             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
2360
2361             new_apdu->u.searchResponse->referenceId = sr->referenceId;
2362             new_apdu->u.searchResponse->records =
2363                 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
2364             *new_apdu->u.searchResponse->searchStatus = 0;
2365
2366             send_to_client(new_apdu);
2367
2368             return 0;
2369         }
2370     }
2371     return apdu;
2372 }
2373
2374 int Yaz_Proxy::handle_authentication(Z_APDU *apdu)
2375 {
2376     if (apdu->which != Z_APDU_initRequest)
2377         return 1;  // pass if no init request
2378     Z_InitRequest *req = apdu->u.initRequest;
2379
2380     Yaz_ProxyConfig *cfg = check_reconfigure();
2381     if (!cfg)
2382         return 1;  // pass if no config
2383
2384     int ret;
2385     if (req->idAuthentication == 0)
2386     {
2387         ret = cfg->client_authentication(m_default_target, 0, 0, 0,
2388                                          m_peername);
2389     }
2390     else if (req->idAuthentication->which == Z_IdAuthentication_idPass)
2391     {
2392         ret = cfg->client_authentication(
2393             m_default_target,
2394             req->idAuthentication->u.idPass->userId,
2395             req->idAuthentication->u.idPass->groupId,
2396             req->idAuthentication->u.idPass->password,
2397             m_peername);
2398     }
2399     else if (req->idAuthentication->which == Z_IdAuthentication_open)
2400     {
2401         char user[64], pass[64];
2402         *user = '\0';
2403         *pass = '\0';
2404         sscanf(req->idAuthentication->u.open, "%63[^/]/%63s", user, pass);
2405         ret = cfg->client_authentication(m_default_target, user, 0, pass,
2406                                          m_peername);
2407     }
2408     else
2409         ret = cfg->client_authentication(m_default_target, 0, 0, 0,
2410                                          m_peername);
2411     return ret;
2412 }
2413
2414 int Yaz_Proxy::handle_global_authentication(Z_APDU *apdu)
2415 {
2416     if (apdu->which != Z_APDU_initRequest)
2417         return 1;  // pass if no init request
2418     Z_InitRequest *req = apdu->u.initRequest;
2419
2420     Yaz_ProxyConfig *cfg = check_reconfigure();
2421     if (!cfg)
2422         return 1;  // pass if no config
2423
2424     int ret;
2425     if (req->idAuthentication == 0)
2426     {
2427         ret = cfg->global_client_authentication(0, 0, 0,
2428                                                 m_peername);
2429     }
2430     else if (req->idAuthentication->which == Z_IdAuthentication_idPass)
2431     {
2432         ret = cfg->global_client_authentication(
2433             req->idAuthentication->u.idPass->userId,
2434             req->idAuthentication->u.idPass->groupId,
2435             req->idAuthentication->u.idPass->password,
2436             m_peername);
2437     }
2438     else if (req->idAuthentication->which == Z_IdAuthentication_open)
2439     {
2440         char user[64], pass[64];
2441         *user = '\0';
2442         *pass = '\0';
2443         sscanf(req->idAuthentication->u.open, "%63[^/]/%63s", user, pass);
2444         ret = cfg->global_client_authentication(user, 0, pass,
2445                                                 m_peername);
2446     }
2447     else
2448         ret = cfg->global_client_authentication(0, 0, 0, m_peername);
2449     return ret;
2450 }
2451
2452 Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
2453 {
2454     m_marcxml_mode = none;
2455     if (apdu->which == Z_APDU_searchRequest)
2456     {
2457         Z_SearchRequest *sr = apdu->u.searchRequest;
2458         int err = 0;
2459         char *addinfo = 0;
2460         Yaz_ProxyConfig *cfg = check_reconfigure();
2461
2462         Z_RecordComposition rc_temp, *rc = 0;
2463         if (sr->smallSetElementSetNames)
2464         {
2465             rc_temp.which = Z_RecordComp_simple;
2466             rc_temp.u.simple = sr->smallSetElementSetNames;
2467             rc = &rc_temp;
2468         }
2469
2470         if (sr->preferredRecordSyntax)
2471             oid_oidcpy(m_frontend_type, sr->preferredRecordSyntax);
2472         else
2473             m_frontend_type[0] = -1;
2474
2475         char *stylesheet_name = 0;
2476         if (cfg)
2477             err = cfg->check_syntax(odr_encode(),
2478                                     m_default_target,
2479                                     sr->preferredRecordSyntax, rc,
2480                                     &addinfo, &stylesheet_name, &m_schema,
2481                                     &m_backend_type, &m_backend_charset,
2482                                     &m_usemarcon_ini_stage1,
2483                                     &m_usemarcon_ini_stage2);
2484         if (stylesheet_name)
2485         {
2486             m_parent->low_socket_close();
2487
2488 #if YAZ_HAVE_XSLT
2489             if (m_stylesheet_xsp)
2490                 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
2491             m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
2492                                                        stylesheet_name);
2493 #endif
2494             m_stylesheet_offset = 0;
2495             xfree(stylesheet_name);
2496
2497             m_parent->low_socket_open();
2498         }
2499         if (err == -1)
2500         {
2501             sr->smallSetElementSetNames = 0;
2502             sr->mediumSetElementSetNames = 0;
2503             m_marcxml_mode = marcxml;
2504             sr->preferredRecordSyntax =
2505                 yaz_string_to_oid_odr(
2506                     yaz_oid_std(), CLASS_RECSYN,
2507                     m_backend_type ? m_backend_type : "usmarc",
2508                     odr_encode());
2509         }
2510         else if (err)
2511         {
2512             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
2513
2514             new_apdu->u.searchResponse->referenceId = sr->referenceId;
2515             new_apdu->u.searchResponse->records =
2516                 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
2517             *new_apdu->u.searchResponse->searchStatus = 0;
2518
2519             send_to_client(new_apdu);
2520
2521             return 0;
2522         }
2523         else if (m_backend_type)
2524         {
2525             sr->preferredRecordSyntax =
2526                 yaz_string_to_oid_odr(yaz_oid_std(), CLASS_RECSYN,
2527                                       m_backend_type, odr_encode());
2528         }
2529     }
2530     else if (apdu->which == Z_APDU_presentRequest)
2531     {
2532         Z_PresentRequest *pr = apdu->u.presentRequest;
2533         int err = 0;
2534         char *addinfo = 0;
2535         Yaz_ProxyConfig *cfg = check_reconfigure();
2536
2537         if (pr->preferredRecordSyntax)
2538             oid_oidcpy(m_frontend_type, pr->preferredRecordSyntax);
2539         else
2540             m_frontend_type[0] = -1;
2541
2542         char *stylesheet_name = 0;
2543         if (cfg)
2544             err = cfg->check_syntax(odr_encode(), m_default_target,
2545                                     pr->preferredRecordSyntax,
2546                                     pr->recordComposition,
2547                                     &addinfo, &stylesheet_name, &m_schema,
2548                                     &m_backend_type, &m_backend_charset,
2549                                     &m_usemarcon_ini_stage1,
2550                                     &m_usemarcon_ini_stage2
2551                                     );
2552         if (stylesheet_name)
2553         {
2554             m_parent->low_socket_close();
2555
2556 #if YAZ_HAVE_XSLT
2557             if (m_stylesheet_xsp)
2558                 xsltFreeStylesheet((xsltStylesheetPtr) m_stylesheet_xsp);
2559             m_stylesheet_xsp = xsltParseStylesheetFile((const xmlChar*)
2560                                                        stylesheet_name);
2561 #endif
2562             m_stylesheet_offset = 0;
2563             xfree(stylesheet_name);
2564
2565             m_parent->low_socket_open();
2566         }
2567         if (err == -1)
2568         {
2569             pr->recordComposition = 0;
2570             m_marcxml_mode = marcxml;
2571
2572             pr->preferredRecordSyntax =
2573                 yaz_string_to_oid_odr(
2574                     yaz_oid_std(), CLASS_RECSYN,
2575                     m_backend_type ? m_backend_type : "usmarc",
2576                     odr_encode());
2577         }
2578         else if (err)
2579         {
2580             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
2581
2582             new_apdu->u.presentResponse->referenceId = pr->referenceId;
2583             new_apdu->u.presentResponse->records =
2584                 create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
2585             *new_apdu->u.presentResponse->presentStatus =
2586                 Z_PresentStatus_failure;
2587
2588             send_to_client(new_apdu);
2589
2590             return 0;
2591         }
2592         else if (m_backend_type)
2593         {
2594             pr->preferredRecordSyntax =
2595                 yaz_string_to_oid_odr(yaz_oid_std(),
2596                                       CLASS_RECSYN, m_backend_type,
2597                                       odr_encode());
2598         }
2599     }
2600     return apdu;
2601 }
2602
2603 Z_ElementSetNames *Yaz_Proxy::mk_esn_from_schema(ODR o, const char *schema)
2604 {
2605     if (!schema)
2606         return 0;
2607     Z_ElementSetNames *esn = (Z_ElementSetNames *)
2608         odr_malloc(o, sizeof(Z_ElementSetNames));
2609     esn->which = Z_ElementSetNames_generic;
2610     esn->u.generic = odr_strdup(o, schema);
2611     return esn;
2612 }
2613
2614 void Yaz_Proxy::srw_get_client(const char *db, const char **backend_db)
2615 {
2616     const char *t = 0;
2617     Yaz_ProxyConfig *cfg = check_reconfigure();
2618     if (cfg)
2619         t = cfg->get_explain_name(db, backend_db);
2620
2621     if (m_client && m_default_target && t && strcmp(m_default_target, t))
2622     {
2623         releaseClient();
2624     }
2625
2626     if (t)
2627     {
2628         xfree(m_default_target);
2629         m_default_target = xstrdup(t);
2630     }
2631 }
2632
2633 int Yaz_Proxy::file_access(Z_HTTP_Request *hreq)
2634 {
2635     struct stat sbuf;
2636     if (strcmp(hreq->method, "GET"))
2637         return 0;
2638     if (hreq->path[0] != '/')
2639         return 0;
2640     const char *cp = hreq->path;
2641     while (*cp)
2642     {
2643         if (*cp == '/' && strchr("/.", cp[1]))
2644             return 0;
2645         cp++;
2646     }
2647
2648     Yaz_ProxyConfig *cfg = check_reconfigure();
2649
2650     if (!cfg->get_file_access_info(hreq->path+1))
2651         return 0;
2652
2653     const char *fname = hreq->path+1;
2654     if (stat(fname, &sbuf))
2655     {
2656         yaz_log(YLOG_LOG|YLOG_ERRNO, "%sstat failed for %s", m_session_str,
2657                 fname);
2658         return 0;
2659     }
2660     if ((sbuf.st_mode & S_IFMT) != S_IFREG)
2661     {
2662         yaz_log(YLOG_LOG, "%sNot a regular file %s", m_session_str, fname);
2663         return 0;
2664     }
2665     if (sbuf.st_size > (off_t) 1000000)
2666     {
2667         yaz_log(YLOG_WARN, "%sFile %s too large for transfer", m_session_str,
2668                 fname);
2669         return 0;
2670     }
2671
2672     ODR o = odr_encode();
2673
2674     const char *ctype = cfg->check_mime_type(fname);
2675     Z_GDU *gdu = z_get_HTTP_Response(o, 200);
2676     Z_HTTP_Response *hres = gdu->u.HTTP_Response;
2677     if (m_http_version)
2678         hres->version = odr_strdup(o, m_http_version);
2679     z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
2680     if (m_http_keepalive)
2681         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
2682     else
2683         timeout(0);
2684
2685     hres->content_len = sbuf.st_size;
2686     hres->content_buf = (char*) odr_malloc(o, hres->content_len);
2687     FILE *f = fopen(fname, "rb");
2688     if (f)
2689     {
2690         fread(hres->content_buf, 1, hres->content_len, f);
2691         fclose(f);
2692     }
2693     else
2694     {
2695         return 0;
2696     }
2697     if (m_log_mask & PROXY_LOG_REQ_CLIENT)
2698     {
2699         yaz_log(YLOG_LOG, "%sSending file %s to client", m_session_str,
2700                  fname);
2701     }
2702     int len;
2703     send_GDU(gdu, &len);
2704     recv_GDU_more(true);
2705     return 1;
2706 }
2707
2708 void Yaz_Proxy::handle_incoming_HTTP(Z_HTTP_Request *hreq)
2709 {
2710     if (m_s2z_odr_init)
2711     {
2712         odr_destroy(m_s2z_odr_init);
2713         m_s2z_odr_init = 0;
2714     }
2715     if (m_s2z_odr_search)
2716     {
2717         odr_destroy(m_s2z_odr_search);
2718         m_s2z_odr_search = 0;
2719     }
2720
2721     m_http_keepalive = 0;
2722     m_http_version = 0;
2723     if (!strcmp(hreq->version, "1.0"))
2724     {
2725         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
2726         if (v && !strcmp(v, "Keep-Alive"))
2727             m_http_keepalive = 1;
2728         else
2729             m_http_keepalive = 0;
2730         m_http_version = "1.0";
2731     }
2732     else
2733     {
2734         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
2735         if (v && !strcmp(v, "close"))
2736             m_http_keepalive = 0;
2737         else
2738             m_http_keepalive = 1;
2739         m_http_version = "1.1";
2740     }
2741
2742     const char *a = z_HTTP_header_lookup(hreq->headers, "Authorization");
2743     char authorization_str[255];
2744     *authorization_str = '\0';
2745     if (a && strncasecmp(a, "Basic ", 6) == 0)
2746         base64_decode(a + 6, authorization_str, 254);
2747
2748     Z_SRW_PDU *srw_pdu = 0;
2749     Z_SOAP *soap_package = 0;
2750     char *charset = 0;
2751     Z_SRW_diagnostic *diagnostic = 0;
2752     int num_diagnostic = 0;
2753
2754     yaz_log(YLOG_LOG, "%s%s %s", m_session_str, hreq->method, hreq->path);
2755
2756     if (file_access(hreq))
2757     {
2758         return;
2759     }
2760     else if (yaz_srw_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
2761                             &charset) == 0
2762              || yaz_sru_decode(hreq, &srw_pdu, &soap_package, odr_decode(),
2763                                &charset, &diagnostic, &num_diagnostic) == 0)
2764     {
2765         m_s2z_odr_init = odr_createmem(ODR_ENCODE);
2766         m_s2z_odr_search = odr_createmem(ODR_ENCODE);
2767         m_soap_ns = odr_strdup(m_s2z_odr_search, soap_package->ns);
2768         m_s2z_init_apdu = 0;
2769         m_s2z_search_apdu = 0;
2770         m_s2z_present_apdu = 0;
2771
2772         m_s2z_stylesheet = 0;
2773
2774         Z_IdAuthentication *auth = NULL;
2775         if (srw_pdu->username && srw_pdu->password)
2776         {
2777             yaz_log(YLOG_LOG, "username/password: %s/%s\n",
2778                     srw_pdu->username, srw_pdu->password);
2779             auth = (Z_IdAuthentication *) odr_malloc(m_s2z_odr_init, sizeof(Z_IdAuthentication));
2780             auth->which = Z_IdAuthentication_idPass;
2781             auth->u.idPass = (Z_IdPass *) odr_malloc(m_s2z_odr_init, sizeof(Z_IdPass));
2782             auth->u.idPass->groupId = NULL;
2783             auth->u.idPass->password = odr_strdup(m_s2z_odr_init, srw_pdu->password);
2784             auth->u.idPass->userId = odr_strdup(m_s2z_odr_init, srw_pdu->username);
2785         }
2786         else
2787         {
2788             if (*authorization_str)
2789             {
2790                 yaz_log(YLOG_LOG, "authorization_str present: %s\n", authorization_str);
2791                 auth = (Z_IdAuthentication *) odr_malloc(m_s2z_odr_init, sizeof(Z_IdAuthentication));
2792                 auth->which = Z_IdAuthentication_idPass;
2793                 auth->u.idPass = (Z_IdPass *) odr_malloc(m_s2z_odr_init, sizeof(Z_IdPass));
2794                 auth->u.idPass->groupId = NULL;
2795                 char *p = strchr(authorization_str, ':');
2796                 if (p)
2797                 {
2798                     *p = '\0';
2799                     p++;
2800                     auth->u.idPass->password = odr_strdup(m_s2z_odr_init, p);
2801                 }
2802                 auth->u.idPass->userId = odr_strdup(m_s2z_odr_init, authorization_str);
2803             }
2804         }
2805
2806         if (srw_pdu->which == Z_SRW_searchRetrieve_request)
2807         {
2808
2809             Z_SRW_searchRetrieveRequest *srw_req = srw_pdu->u.request;
2810
2811             const char *backend_db = srw_req->database;
2812             srw_get_client(srw_req->database, &backend_db);
2813
2814             m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
2815             // recordXPath unsupported.
2816             if (srw_req->recordXPath)
2817             {
2818                 yaz_add_srw_diagnostic(odr_decode(),
2819                                        &diagnostic, &num_diagnostic,
2820                                        72, 0);
2821             }
2822             // sort unsupported
2823             if (srw_req->sort_type != Z_SRW_sort_type_none)
2824             {
2825                 yaz_add_srw_diagnostic(odr_decode(),
2826                                        &diagnostic, &num_diagnostic,
2827                                        80, 0);
2828             }
2829             // save stylesheet
2830             if (srw_req->stylesheet)
2831                 m_s2z_stylesheet =
2832                     odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
2833
2834             // set packing for response records ..
2835             if (srw_req->recordPacking &&
2836                 !strcmp(srw_req->recordPacking, "xml"))
2837                 m_s2z_packing = Z_SRW_recordPacking_XML;
2838             else
2839                 m_s2z_packing = Z_SRW_recordPacking_string;
2840
2841             if (num_diagnostic)
2842             {
2843                 Z_SRW_PDU *srw_pdu =
2844                     yaz_srw_get(odr_encode(),
2845                                 Z_SRW_searchRetrieve_response);
2846                 Z_SRW_searchRetrieveResponse *srw_res = srw_pdu->u.response;
2847
2848                 srw_res->diagnostics = diagnostic;
2849                 srw_res->num_diagnostics = num_diagnostic;
2850                 send_srw_response(srw_pdu);
2851                 return;
2852             }
2853
2854             // prepare search PDU
2855             m_s2z_search_apdu = zget_APDU(m_s2z_odr_search,
2856                                           Z_APDU_searchRequest);
2857             Z_SearchRequest *z_searchRequest =
2858                 m_s2z_search_apdu->u.searchRequest;
2859
2860             z_searchRequest->num_databaseNames = 1;
2861             z_searchRequest->databaseNames = (char**)
2862                 odr_malloc(m_s2z_odr_search, sizeof(char *));
2863             z_searchRequest->databaseNames[0] = odr_strdup(m_s2z_odr_search,
2864                                                            backend_db);
2865
2866             // query transformation
2867             Z_Query *query = (Z_Query *)
2868                 odr_malloc(m_s2z_odr_search, sizeof(Z_Query));
2869             z_searchRequest->query = query;
2870
2871             if (srw_req->query_type == Z_SRW_query_type_cql)
2872             {
2873                 Z_External *ext = (Z_External *)
2874                     odr_malloc(m_s2z_odr_search, sizeof(*ext));
2875                 ext->direct_reference =
2876                     odr_getoidbystr(m_s2z_odr_search, "1.2.840.10003.16.2");
2877                 ext->indirect_reference = 0;
2878                 ext->descriptor = 0;
2879                 ext->which = Z_External_CQL;
2880                 ext->u.cql = srw_req->query.cql;
2881
2882                 query->which = Z_Query_type_104;
2883                 query->u.type_104 =  ext;
2884             }
2885             else if (srw_req->query_type == Z_SRW_query_type_pqf)
2886             {
2887                 Z_RPNQuery *RPNquery;
2888                 YAZ_PQF_Parser pqf_parser;
2889
2890                 pqf_parser = yaz_pqf_create ();
2891
2892                 RPNquery = yaz_pqf_parse (pqf_parser, m_s2z_odr_search,
2893                                           srw_req->query.pqf);
2894                 if (!RPNquery)
2895                 {
2896                     const char *pqf_msg;
2897                     size_t off;
2898                     int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
2899                     int ioff = off;
2900                     yaz_log(YLOG_LOG, "%*s^\n", ioff+4, "");
2901                     yaz_log(YLOG_LOG, "Bad PQF: %s (code %d)\n", pqf_msg, code);
2902
2903                     send_to_srw_client_error(10, 0);
2904                     return;
2905                 }
2906                 query->which = Z_Query_type_1;
2907                 query->u.type_1 =  RPNquery;
2908
2909                 yaz_pqf_destroy (pqf_parser);
2910             }
2911             else
2912             {
2913                 send_to_srw_client_error(7, "query");
2914                 return;
2915             }
2916
2917             // present
2918             m_s2z_present_apdu = 0;
2919             int max = 0;
2920             if (srw_req->maximumRecords)
2921                 max = *srw_req->maximumRecords;
2922             int start = 1;
2923             if (srw_req->startRecord)
2924                 start = *srw_req->startRecord;
2925             if (max > 0)
2926             {
2927                 // Some backend, such as Voyager doesn't honor piggyback
2928                 // So we use present always (0 &&).
2929                 if (0 && start <= 1)  // Z39.50 piggyback
2930                 {
2931                     *z_searchRequest->smallSetUpperBound = max;
2932                     *z_searchRequest->mediumSetPresentNumber = max;
2933                     *z_searchRequest->largeSetLowerBound = 2000000000; // 2e9
2934
2935                     z_searchRequest->preferredRecordSyntax =
2936                         odr_oiddup(m_s2z_odr_search, yaz_oid_recsyn_xml);
2937
2938                     if (srw_req->recordSchema)
2939                     {
2940                         z_searchRequest->smallSetElementSetNames =
2941                             z_searchRequest->mediumSetElementSetNames =
2942                             mk_esn_from_schema(m_s2z_odr_search,
2943                                                srw_req->recordSchema);
2944                     }
2945                 }
2946                 else   // Z39.50 present
2947                 {
2948                     m_s2z_present_apdu = zget_APDU(m_s2z_odr_search,
2949                                                    Z_APDU_presentRequest);
2950                     Z_PresentRequest *z_presentRequest =
2951                         m_s2z_present_apdu->u.presentRequest;
2952                     *z_presentRequest->resultSetStartPoint = start;
2953                     *z_presentRequest->numberOfRecordsRequested = max;
2954
2955                     z_presentRequest->preferredRecordSyntax =
2956                         odr_oiddup(m_s2z_odr_search, yaz_oid_recsyn_xml);
2957                     if (srw_req->recordSchema)
2958                     {
2959                         z_presentRequest->recordComposition =
2960                             (Z_RecordComposition *)
2961                             odr_malloc(m_s2z_odr_search,
2962                                        sizeof(Z_RecordComposition));
2963                         z_presentRequest->recordComposition->which =
2964                             Z_RecordComp_simple;
2965                         z_presentRequest->recordComposition->u.simple =
2966                             mk_esn_from_schema(m_s2z_odr_search,
2967                                                srw_req->recordSchema);
2968                     }
2969                 }
2970             }
2971             if (!m_client)
2972             {
2973                 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
2974                                             Z_APDU_initRequest);
2975
2976                 m_s2z_init_apdu->u.initRequest->idAuthentication = auth;
2977
2978                 // prevent m_initRequest_apdu memory from being grabbed
2979                 // in Yaz_Proxy::handle_incoming_Z_PDU
2980                 m_initRequest_apdu = m_s2z_init_apdu;
2981                 handle_incoming_Z_PDU(m_s2z_init_apdu);
2982                 return;
2983             }
2984             else
2985             {
2986                 handle_incoming_Z_PDU(m_s2z_search_apdu);
2987                 return;
2988             }
2989         }
2990         else if (srw_pdu->which == Z_SRW_explain_request)
2991         {
2992             Z_SRW_explainRequest *srw_req = srw_pdu->u.explain_request;
2993
2994             const char *backend_db = srw_req->database;
2995             srw_get_client(srw_req->database, &backend_db);
2996
2997             m_s2z_database = odr_strdup(m_s2z_odr_init, srw_req->database);
2998
2999             // save stylesheet
3000             if (srw_req->stylesheet)
3001                 m_s2z_stylesheet =
3002                     odr_strdup(m_s2z_odr_init, srw_req->stylesheet);
3003
3004             if (srw_req->recordPacking &&
3005                 !strcmp(srw_req->recordPacking, "xml"))
3006                 m_s2z_packing = Z_SRW_recordPacking_XML;
3007             else
3008                 m_s2z_packing = Z_SRW_recordPacking_string;
3009
3010             if (num_diagnostic)
3011             {
3012                 send_srw_explain_response(diagnostic, num_diagnostic);
3013                 return;
3014             }
3015
3016             if (!m_client)
3017             {
3018                 m_s2z_init_apdu = zget_APDU(m_s2z_odr_init,
3019                                             Z_APDU_initRequest);
3020
3021                 m_s2z_init_apdu->u.initRequest->idAuthentication = auth;
3022
3023                 // prevent m_initRequest_apdu memory from being grabbed
3024                 // in Yaz_Proxy::handle_incoming_Z_PDU
3025                 m_initRequest_apdu = m_s2z_init_apdu;
3026                 handle_incoming_Z_PDU(m_s2z_init_apdu);
3027             }
3028             else
3029                 send_srw_explain_response(0, 0);
3030             return;
3031         }
3032         else if (srw_pdu->which == Z_SRW_scan_request)
3033         {
3034             m_s2z_database = odr_strdup(m_s2z_odr_init,
3035                                         srw_pdu->u.scan_request->database);
3036
3037             yaz_add_srw_diagnostic(odr_decode(),
3038                                    &diagnostic, &num_diagnostic,
3039                                    4, "scan");
3040             Z_SRW_PDU *srw_pdu =
3041                 yaz_srw_get(odr_encode(),
3042                             Z_SRW_scan_response);
3043             Z_SRW_scanResponse *srw_res = srw_pdu->u.scan_response;
3044
3045             srw_res->diagnostics = diagnostic;
3046             srw_res->num_diagnostics = num_diagnostic;
3047             send_srw_response(srw_pdu);
3048             return;
3049         }
3050         else
3051         {
3052             m_s2z_database = 0;
3053
3054             send_to_srw_client_error(4, 0);
3055         }
3056     }
3057     send_http_response(400);
3058 }
3059
3060 void Yaz_Proxy::handle_init(Z_APDU *apdu)
3061 {
3062
3063     Z_OtherInformation **oi;
3064     get_otherInfoAPDU(apdu, &oi);
3065
3066     if (apdu->u.initRequest->implementationId)
3067         yaz_log(YLOG_LOG, "%simplementationId: %s",
3068                 m_session_str, apdu->u.initRequest->implementationId);
3069     if (apdu->u.initRequest->implementationName)
3070         yaz_log(YLOG_LOG, "%simplementationName: %s",
3071                 m_session_str, apdu->u.initRequest->implementationName);
3072     if (apdu->u.initRequest->implementationVersion)
3073         yaz_log(YLOG_LOG, "%simplementationVersion: %s",
3074                 m_session_str, apdu->u.initRequest->implementationVersion);
3075     if (m_initRequest_apdu == 0)
3076     {
3077         if (m_initRequest_mem)
3078             nmem_destroy(m_initRequest_mem);
3079
3080         m_initRequest_apdu = apdu;
3081         m_initRequest_mem = odr_extract_mem(odr_decode());
3082
3083         m_initRequest_preferredMessageSize = *apdu->u.initRequest->
3084             preferredMessageSize;
3085         *apdu->u.initRequest->preferredMessageSize = 1024*1024;
3086         m_initRequest_maximumRecordSize = *apdu->u.initRequest->
3087             maximumRecordSize;
3088         *apdu->u.initRequest->maximumRecordSize = 1024*1024;
3089
3090         Z_CharSetandLanguageNegotiation *charSetandLangRecord =
3091             yaz_get_charneg_record(*oi);
3092
3093         // Save proposal charsets and langs.
3094         if (ODR_MASK_GET(apdu->u.initRequest->options,
3095                          Z_Options_negotiationModel)
3096             && charSetandLangRecord)
3097         {
3098
3099             yaz_get_proposal_charneg(m_referenceId_mem,
3100                                      charSetandLangRecord,
3101                                      &m_initRequest_oi_negotiation_charsets,
3102                                      &m_initRequest_oi_negotiation_num_charsets,
3103                                      &m_initRequest_oi_negotiation_langs,
3104                                      &m_initRequest_oi_negotiation_num_langs,
3105                                      &m_initRequest_oi_negotiation_selected);
3106
3107             for (int i = 0; i<m_initRequest_oi_negotiation_num_charsets; i++)
3108             {
3109                 yaz_log(YLOG_LOG, "%scharacters set proposal: %s",
3110                         m_session_str,(m_initRequest_oi_negotiation_charsets[i])?
3111                         m_initRequest_oi_negotiation_charsets[i]:"none");
3112             }
3113             for (int i=0; i<m_initRequest_oi_negotiation_num_langs; i++)
3114             {
3115                 yaz_log(YLOG_LOG, "%slanguages proposal: %s",
3116                         m_session_str, (m_initRequest_oi_negotiation_langs[i])?
3117                         m_initRequest_oi_negotiation_langs[i]:"none");
3118             }
3119             yaz_log(YLOG_LOG, "%sselected proposal: %d (boolean)",
3120                     m_session_str, m_initRequest_oi_negotiation_selected);
3121         }
3122         // save init options for the response..
3123         m_initRequest_options = apdu->u.initRequest->options;
3124
3125         apdu->u.initRequest->options =
3126             (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
3127                                        sizeof(Odr_bitmask));
3128         ODR_MASK_ZERO(apdu->u.initRequest->options);
3129         int i;
3130         for (i = 0; i<= 24; i++)
3131             ODR_MASK_SET(apdu->u.initRequest->options, i);
3132         // check negotiation option
3133         if (!ODR_MASK_GET(m_initRequest_options,
3134                           Z_Options_negotiationModel))
3135         {
3136             ODR_MASK_CLEAR(apdu->u.initRequest->options,
3137                            Z_Options_negotiationModel);
3138         }
3139         ODR_MASK_CLEAR(apdu->u.initRequest->options,
3140                        Z_Options_concurrentOperations);
3141         // make new version
3142         m_initRequest_version = apdu->u.initRequest->protocolVersion;
3143         apdu->u.initRequest->protocolVersion =
3144             (Odr_bitmask *)nmem_malloc(m_initRequest_mem,
3145                                        sizeof(Odr_bitmask));
3146         ODR_MASK_ZERO(apdu->u.initRequest->protocolVersion);
3147
3148         for (i = 0; i<= 8; i++)
3149             ODR_MASK_SET(apdu->u.initRequest->protocolVersion, i);
3150     }
3151     handle_charset_lang_negotiation(apdu);
3152     if (m_client->m_init_flag)
3153     {
3154         if (handle_init_response_for_invalid_session(apdu))
3155             return;
3156         if (m_client->m_initResponse)
3157         {
3158             Z_APDU *apdu2 = m_client->m_initResponse;
3159             apdu2->u.initResponse->otherInfo = 0;
3160             if (m_client->m_cookie && *m_client->m_cookie)
3161                 set_otherInformationString(apdu2, yaz_oid_userinfo_cookie,
3162                                            1, m_client->m_cookie);
3163             apdu2->u.initResponse->referenceId =
3164                 apdu->u.initRequest->referenceId;
3165             apdu2->u.initResponse->options = m_client->m_initResponse_options;
3166             apdu2->u.initResponse->protocolVersion =
3167                 m_client->m_initResponse_version;
3168
3169             handle_charset_lang_negotiation(apdu2);
3170
3171             if (m_timeout_mode == timeout_busy)
3172                 m_timeout_mode = timeout_normal;
3173             send_to_client(apdu2);
3174             return;
3175         }
3176     }
3177     m_client->m_init_flag = 1;
3178
3179     if (m_num_msg_threads && m_my_thread)
3180     {
3181         Auth_Msg *m = new Auth_Msg;
3182         m->m_proxy = this;
3183         z_APDU(odr_encode(), &apdu, 0, "encode");
3184         char *apdu_buf = odr_getbuf(odr_encode(), &m->m_apdu_len, 0);
3185         m->m_apdu_buf = (char*) nmem_malloc(m->m_nmem, m->m_apdu_len);
3186         memcpy(m->m_apdu_buf, apdu_buf, m->m_apdu_len);
3187         odr_reset(odr_encode());
3188
3189         inc_ref();
3190         m_my_thread->put(m);
3191     }
3192     else
3193     {
3194         int ret = handle_authentication(apdu);
3195         result_authentication(apdu, ret);
3196     }
3197 }
3198
3199 void Yaz_Proxy::handle_incoming_Z_PDU(Z_APDU *apdu)
3200 {
3201     Z_ReferenceId **refid = get_referenceIdP(apdu);
3202     nmem_reset(m_referenceId_mem);
3203     if (refid && *refid)
3204     {
3205         m_referenceId = (Z_ReferenceId *)
3206             nmem_malloc(m_referenceId_mem, sizeof(*m_referenceId));
3207         m_referenceId->len = m_referenceId->size = (*refid)->len;
3208         m_referenceId->buf = (unsigned char *)
3209             nmem_malloc(m_referenceId_mem, (*refid)->len);
3210         memcpy(m_referenceId->buf, (*refid)->buf, (*refid)->len);
3211     }
3212     else
3213         m_referenceId = 0;
3214
3215     if (!m_client && m_flag_invalid_session)
3216     {
3217         // Got request for a session that is invalid..
3218         m_apdu_invalid_session = apdu; // save package
3219         m_mem_invalid_session = odr_extract_mem(odr_decode());
3220         apdu = m_initRequest_apdu;     // but throw an init to the target
3221     }
3222
3223     if (apdu->which == Z_APDU_searchRequest)
3224         m_search_stat.add_bytes(1);
3225
3226     // Handle global authentication
3227     if (!handle_global_authentication(apdu))
3228     {
3229         if (m_http_version)
3230         {   // HTTP. Send unauthorized
3231             send_http_response(401);
3232             return;
3233         }
3234         else
3235         {
3236             // Z39.50 just shutdown
3237             timeout(0);
3238             return;
3239         }
3240         return;
3241     }
3242
3243     // Determine our client.
3244     Z_OtherInformation **oi;
3245     get_otherInfoAPDU(apdu, &oi);
3246     int http_code = 404;
3247     m_client = get_client(apdu, get_cookie(oi), get_proxy(oi), &http_code);
3248     if (!m_client)
3249     {
3250         if (m_http_version)
3251         {   // HTTP. Send not found
3252             send_http_response(http_code);
3253             return;
3254         }
3255         else
3256         {
3257             // Z39.50 just shutdown
3258             timeout(0);
3259             return;
3260         }
3261     }
3262
3263     m_client->m_server = this;
3264
3265     if (apdu->which == Z_APDU_initRequest)
3266         handle_init(apdu);
3267     else
3268         handle_incoming_Z_PDU_2(apdu);
3269 }
3270
3271 void Yaz_Proxy::handle_incoming_Z_PDU_2(Z_APDU *apdu)
3272 {
3273     handle_max_record_retrieve(apdu);
3274
3275     if (apdu)
3276         apdu = handle_syntax_validation(apdu);
3277
3278     if (apdu)
3279         apdu = handle_query_transformation(apdu);
3280
3281     if (apdu)
3282         apdu = handle_target_charset_conversion(apdu);
3283
3284     if (apdu)
3285         apdu = handle_query_validation(apdu);
3286
3287     if (apdu)
3288         apdu = result_set_optimize(apdu);
3289
3290     if (!apdu)
3291     {
3292         m_client->timeout(m_target_idletime);  // mark it active even
3293         recv_GDU_more(true);
3294         // though we didn't use it
3295         return;
3296     }
3297
3298     // delete other info construct completely if 0 elements
3299     Z_OtherInformation **oi;
3300     get_otherInfoAPDU(apdu, &oi);
3301     if (oi && *oi && (*oi)->num_elements == 0)
3302         *oi = 0;
3303
3304     if (apdu->which == Z_APDU_presentRequest &&
3305         m_client->m_resultSetStartPoint == 0)
3306     {
3307         Z_PresentRequest *pr = apdu->u.presentRequest;
3308         m_client->m_resultSetStartPoint = *pr->resultSetStartPoint;
3309         m_client->m_cache.copy_presentRequest(apdu->u.presentRequest);
3310     } else {
3311         m_client->m_resultSetStartPoint = 0;
3312     }
3313     if (m_client->send_to_target(apdu) < 0)
3314     {
3315         m_client->shutdown();
3316     }
3317     else
3318         m_client->m_waiting = 1;
3319 }
3320
3321 void Yaz_Proxy::connectNotify()
3322 {
3323 }
3324
3325 void Yaz_Proxy::releaseClient()
3326 {
3327     xfree(m_proxyTarget);
3328     m_proxyTarget = 0;
3329     m_flag_invalid_session = 0;
3330     // only keep if keep_alive flag is set...
3331     if (m_client &&
3332         m_client->m_pdu_recv < m_keepalive_limit_pdu &&
3333         m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
3334         m_client->m_waiting == 0)
3335     {
3336         yaz_log(YLOG_LOG, "%sShutdown (client to proxy) keepalive %s",
3337                  m_session_str,
3338                  m_client->get_hostname());
3339         yaz_log(YLOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
3340                 m_session_str, m_client->m_pdu_recv,
3341                 m_client->m_bytes_sent + m_client->m_bytes_recv,
3342                 m_keepalive_limit_bw, m_keepalive_limit_pdu);
3343         assert (m_client->m_waiting != 2);
3344         // Tell client (if any) that no server connection is there..
3345         m_client->m_server = 0;
3346         m_client = 0;
3347     }
3348     else if (m_client)
3349     {
3350         yaz_log(YLOG_LOG, "%sShutdown (client to proxy) close %s",
3351                  m_session_str,
3352                  m_client->get_hostname());
3353         assert (m_client->m_waiting != 2);
3354         delete m_client;
3355         m_client = 0;
3356     }
3357     else if (!m_parent)
3358     {
3359         yaz_log(YLOG_LOG, "%sshutdown (client to proxy) bad state",
3360                  m_session_str);
3361         assert (m_parent);
3362     }
3363     else
3364     {
3365         yaz_log(YLOG_LOG, "%sShutdown (client to proxy)",
3366                  m_session_str);
3367     }
3368     if (m_parent)
3369         m_parent->pre_init();
3370 }
3371
3372 bool Yaz_Proxy::dec_ref()
3373 {
3374     m_http_keepalive = 0;
3375
3376     --m_ref_count;
3377     if (m_ref_count > 0)
3378         return false;
3379
3380     releaseClient();
3381
3382     delete this;
3383     return true;
3384 }
3385
3386 const char *Yaz_ProxyClient::get_session_str()
3387 {
3388     if (!m_server)
3389         return "0 ";
3390     return m_server->get_session_str();
3391 }
3392
3393 void Yaz_ProxyClient::shutdown()
3394 {
3395     yaz_log(YLOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
3396              get_hostname());
3397
3398     if (m_server)
3399     {
3400         m_waiting = 1;   // ensure it's released from Yaz_Proxy::releaseClient
3401         m_server->dec_ref();
3402     }
3403     else
3404         delete this;
3405 }
3406
3407 void Yaz_Proxy::failNotify()
3408 {
3409     inc_request_no();
3410     yaz_log(YLOG_LOG, "%sConnection closed by client", get_session_str());
3411     dec_ref();
3412 }
3413
3414 void Yaz_Proxy::send_response_fail_client(const char *addr)
3415 {
3416     if (m_http_version)
3417     {
3418         Z_SRW_diagnostic *diagnostic = 0;
3419         int num_diagnostic = 0;
3420
3421         yaz_add_srw_diagnostic(odr_encode(),
3422                                &diagnostic, &num_diagnostic,
3423                                YAZ_SRW_SYSTEM_TEMPORARILY_UNAVAILABLE, addr);
3424         if (m_s2z_search_apdu)
3425             send_srw_search_response(diagnostic, num_diagnostic);
3426         else
3427             send_srw_explain_response(diagnostic, num_diagnostic);
3428     }
3429 }
3430
3431 void Yaz_ProxyClient::failNotify()
3432 {
3433     if (m_server)
3434         m_server->inc_request_no();
3435     yaz_log(YLOG_LOG, "%sConnection closed by target %s",
3436              get_session_str(), get_hostname());
3437
3438     if (m_server)
3439         m_server->send_response_fail_client(get_hostname());
3440     shutdown();
3441 }
3442
3443 void Yaz_ProxyClient::connectNotify()
3444 {
3445     const char *s = get_session_str();
3446     const char *h = get_hostname();
3447     yaz_log(YLOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
3448              m_target_idletime);
3449     timeout(m_target_idletime);
3450     if (!m_server)
3451         pre_init_client();
3452 }
3453
3454 IPDU_Observer *Yaz_ProxyClient::sessionNotify(IPDU_Observable
3455                                               *the_PDU_Observable, int fd)
3456 {
3457     return new Yaz_ProxyClient(the_PDU_Observable, 0);
3458 }
3459
3460 Yaz_ProxyClient::~Yaz_ProxyClient()
3461 {
3462     if (m_prev)
3463         *m_prev = m_next;
3464     if (m_next)
3465         m_next->m_prev = m_prev;
3466     m_waiting = 2;     // for debugging purposes only.
3467     odr_destroy(m_init_odr);
3468     odr_destroy(m_idAuthentication_odr);
3469     delete m_last_query;
3470     xfree(m_last_resultSetId);
3471     xfree(m_cookie);
3472 }
3473
3474 void Yaz_ProxyClient::pre_init_client()
3475 {
3476     Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
3477     Z_InitRequest *req = apdu->u.initRequest;
3478
3479     int i;
3480     for (i = 0; i<= 24; i++)
3481         ODR_MASK_SET(req->options, i);
3482     ODR_MASK_CLEAR(apdu->u.initRequest->options,
3483                    Z_Options_negotiationModel);
3484     ODR_MASK_CLEAR(apdu->u.initRequest->options,
3485                    Z_Options_concurrentOperations);
3486     for (i = 0; i<= 10; i++)
3487         ODR_MASK_SET(req->protocolVersion, i);
3488
3489     if (send_to_target(apdu) < 0)
3490     {
3491         delete this;
3492     }
3493     else
3494     {
3495         m_waiting = 1;
3496         m_init_flag = 1;
3497     }
3498 }
3499
3500 void Yaz_Proxy::pre_init()
3501 {
3502     int i;
3503     const char *name = 0;
3504     const char *zurl_in_use[MAX_ZURL_PLEX];
3505     int limit_bw, limit_pdu, limit_req, limit_search;
3506     int target_idletime, client_idletime;
3507     int max_sockets;
3508     int max_clients;
3509     int keepalive_limit_bw, keepalive_limit_pdu;
3510     int pre_init;
3511     const char *cql2rpn = 0;
3512     const char *authentication = 0;
3513     const char *negotiation_charset = 0;
3514     const char *negotiation_lang = 0;
3515
3516     Yaz_ProxyConfig *cfg = check_reconfigure();
3517
3518     zurl_in_use[0] = 0;
3519
3520     if (m_log_mask & PROXY_LOG_APDU_CLIENT)
3521         set_APDU_yazlog(1);
3522     else
3523         set_APDU_yazlog(0);
3524
3525     for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
3526                                           &limit_bw, &limit_pdu, &limit_req,
3527                                           &limit_search,
3528                                           &target_idletime, &client_idletime,
3529                                           &max_sockets,
3530                                           &max_clients,
3531                                           &keepalive_limit_bw,
3532                                           &keepalive_limit_pdu,
3533                                           &pre_init,
3534                                           &cql2rpn,
3535                                           &authentication,
3536                                           &negotiation_charset,
3537                                           &negotiation_lang,
3538                                           0,
3539                                           0) ; i++)
3540     {
3541         if (pre_init)
3542         {
3543             int j;
3544             for (j = 0; zurl_in_use[j]; j++)
3545             {
3546                 Yaz_ProxyClient *c;
3547                 int spare = 0;
3548                 int spare_waiting = 0;
3549                 int in_use = 0;
3550                 int other = 0;
3551                 for (c = m_clientPool; c; c = c->m_next)
3552                 {
3553                     if (!strcmp(zurl_in_use[j], c->get_hostname()))
3554                     {
3555                         if (c->m_cookie == 0)
3556                         {
3557                             if (c->m_server == 0)
3558                                 if (c->m_waiting)
3559                                     spare_waiting++;
3560                                 else
3561                                     spare++;
3562                             else
3563                                 in_use++;
3564                         }
3565                         else
3566                             other++;
3567                     }
3568                 }
3569                 yaz_log(YLOG_LOG, "%spre-init %s %s use=%d other=%d spare=%d "
3570                         "sparew=%d preinit=%d",m_session_str,
3571                         name, zurl_in_use[j], in_use, other,
3572                         spare, spare_waiting, pre_init);
3573                 if (spare + spare_waiting < pre_init
3574                     && in_use + spare + spare_waiting + other < max_sockets)
3575                 {
3576                     c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
3577                     c->m_next = m_clientPool;
3578                     if (c->m_next)
3579                         c->m_next->m_prev = &c->m_next;
3580                     m_clientPool = c;
3581                     c->m_prev = &m_clientPool;
3582
3583                     if (m_log_mask & PROXY_LOG_APDU_SERVER)
3584                         c->set_APDU_yazlog(1);
3585                     else
3586                         c->set_APDU_yazlog(0);
3587
3588                     if (c->client(zurl_in_use[j]))
3589                     {
3590                         timeout(60);
3591                         delete c;
3592                         return;
3593                     }
3594                     c->timeout(30);
3595                     c->m_waiting = 1;
3596                     c->m_target_idletime = target_idletime;
3597                     c->m_seqno = m_seqno++;
3598                 }
3599             }
3600         }
3601     }
3602 }
3603
3604 void Yaz_Proxy::timeoutNotify()
3605 {
3606     if (m_parent)
3607     {
3608         GDU *gdu;
3609         switch(m_timeout_mode)
3610         {
3611         case timeout_normal:
3612         case timeout_busy:
3613             inc_request_no();
3614             m_in_queue.clear();
3615             yaz_log(YLOG_LOG, "%sTimeout (client to proxy)", m_session_str);
3616             dec_ref();
3617             break;
3618         case timeout_reduce:
3619             timeout(m_client_idletime);
3620             m_timeout_mode = timeout_busy;
3621             gdu = m_timeout_gdu;
3622             m_timeout_gdu = 0;
3623             recv_GDU_normal(gdu);
3624             break;
3625         case timeout_xsl:
3626             assert(m_stylesheet_nprl);
3627             convert_xsl_delay();
3628             recv_GDU_more(true);
3629         }
3630     }
3631     else
3632     {
3633         timeout(600);
3634         pre_init();
3635     }
3636 }
3637
3638 void Yaz_Proxy::markInvalid()
3639 {
3640     m_client = 0;
3641     m_flag_invalid_session = 1;
3642 }
3643
3644 void Yaz_ProxyClient::timeoutNotify()
3645 {
3646     if (m_server)
3647         m_server->inc_request_no();
3648
3649     yaz_log(YLOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
3650              get_hostname());
3651
3652     if (m_server)
3653         m_server->send_response_fail_client(get_hostname());
3654
3655     Yaz_Proxy *proxy_root = m_root;
3656
3657     shutdown();
3658
3659     proxy_root->pre_init();
3660 }
3661
3662 Yaz_ProxyClient::Yaz_ProxyClient(IPDU_Observable *the_PDU_Observable,
3663                                  Yaz_Proxy *parent) :
3664     Z_Assoc (the_PDU_Observable)
3665 {
3666     m_cookie = 0;
3667     m_next = 0;
3668     m_prev = 0;
3669     m_init_flag = 0;
3670     m_last_query = 0;
3671     m_last_resultSetId = 0;
3672     m_last_resultCount = 0;
3673     m_last_ok = 0;
3674     m_sr_transform = 0;
3675     m_waiting = 0;
3676     m_init_odr = odr_createmem (ODR_DECODE);
3677     m_initResponse = 0;
3678     m_initResponse_options = 0;
3679     m_initResponse_version = 0;
3680     m_initResponse_preferredMessageSize = 0;
3681     m_initResponse_maximumRecordSize = 0;
3682     m_resultSetStartPoint = 0;
3683     m_bytes_sent = m_bytes_recv = 0;
3684     m_pdu_recv = 0;
3685     m_server = 0;
3686     m_seqno = 0;
3687     m_target_idletime = 600;
3688     m_root = parent;
3689     m_idAuthentication_odr = odr_createmem(ODR_ENCODE);
3690     m_idAuthentication_ber_buf = 0;
3691     m_idAuthentication_ber_size = 0;
3692 }
3693
3694 const char *Yaz_Proxy::option(const char *name, const char *value)
3695 {
3696     if (!strcmp (name, "optimize")) {
3697         if (value) {
3698             xfree(m_optimize);
3699             m_optimize = xstrdup(value);
3700         }
3701         return m_optimize;
3702     }
3703     return 0;
3704 }
3705
3706 void Yaz_ProxyClient::recv_HTTP_response(Z_HTTP_Response *apdu, int len)
3707 {
3708
3709 }
3710
3711 void Yaz_ProxyClient::recv_GDU(Z_GDU *apdu, int len)
3712 {
3713     if (apdu->which == Z_GDU_Z3950)
3714         recv_Z_PDU(apdu->u.z3950, len);
3715     else if (apdu->which == Z_GDU_HTTP_Response)
3716         recv_HTTP_response(apdu->u.HTTP_Response, len);
3717     else
3718         shutdown();
3719 }
3720
3721 int Yaz_Proxy::handle_init_response_for_invalid_session(Z_APDU *apdu)
3722 {
3723     if (!m_flag_invalid_session)
3724         return 0;
3725     m_flag_invalid_session = 0;
3726     handle_incoming_Z_PDU(m_apdu_invalid_session);
3727     assert (m_mem_invalid_session);
3728     nmem_destroy(m_mem_invalid_session);
3729     m_mem_invalid_session = 0;
3730     return 1;
3731 }
3732
3733 void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
3734 {
3735     m_bytes_recv += len;
3736
3737     m_pdu_recv++;
3738     m_waiting = 0;
3739     if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
3740         yaz_log(YLOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
3741                  apdu_name(apdu), get_hostname(), len);
3742     if (apdu->which == Z_APDU_initResponse)
3743     {
3744         if (!m_server)  // if this is a pre init session , check for more
3745             m_root->pre_init();
3746         NMEM nmem = odr_extract_mem (odr_decode());
3747         odr_reset (m_init_odr);
3748         nmem_transfer (m_init_odr->mem, nmem);
3749         m_initResponse = apdu;
3750         m_initResponse_options = apdu->u.initResponse->options;
3751         m_initResponse_version = apdu->u.initResponse->protocolVersion;
3752         m_initResponse_preferredMessageSize =
3753             *apdu->u.initResponse->preferredMessageSize;
3754         m_initResponse_maximumRecordSize =
3755             *apdu->u.initResponse->maximumRecordSize;
3756
3757         Z_InitResponse *ir = apdu->u.initResponse;
3758
3759         // apply YAZ Proxy version
3760         char *imv0 = ir->implementationVersion;
3761         char *imv1 = (char*)
3762             odr_malloc(m_init_odr, 20 + (imv0 ? strlen(imv0) : 0));
3763         *imv1 = '\0';
3764         if (imv0)
3765             strcat(imv1, imv0);
3766 #ifdef VERSION
3767         strcat(imv1, "/" VERSION);
3768 #endif
3769         ir->implementationVersion = imv1;
3770
3771         // apply YAZ Proxy implementation name
3772         char *im0 = ir->implementationName;
3773         char *im1 = (char*)
3774             odr_malloc(m_init_odr, 20 + (im0 ? strlen(im0) : 0));
3775         *im1 = '\0';
3776         if (im0)
3777         {
3778             strcat(im1, im0);
3779             strcat(im1, " ");
3780         }
3781         strcat(im1, "(YAZ Proxy)");
3782         ir->implementationName = im1;
3783
3784         nmem_destroy (nmem);
3785
3786         if (m_server && m_server->handle_init_response_for_invalid_session(apdu))
3787             return;
3788     }
3789     if (apdu->which == Z_APDU_searchResponse)
3790     {
3791         Z_SearchResponse *sr = apdu->u.searchResponse;
3792         m_last_resultCount = *sr->resultCount;
3793         int status = *sr->searchStatus;
3794         if (status && (!sr->records || sr->records->which == Z_Records_DBOSD))
3795         {
3796             m_last_ok = 1;
3797
3798             if (sr->records && sr->records->which == Z_Records_DBOSD)
3799             {
3800                 m_cache.add(odr_decode(),
3801                             sr->records->u.databaseOrSurDiagnostics, 1,
3802                             *sr->resultCount);
3803             }
3804         }
3805     }
3806     if (apdu->which == Z_APDU_presentResponse)
3807     {
3808         Z_PresentResponse *pr = apdu->u.presentResponse;
3809         if (m_sr_transform)
3810         {
3811             m_sr_transform = 0;
3812             Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
3813             Z_SearchResponse *sr = new_apdu->u.searchResponse;
3814             sr->referenceId = pr->referenceId;
3815             *sr->resultCount = m_last_resultCount;
3816             sr->records = pr->records;
3817             sr->nextResultSetPosition = pr->nextResultSetPosition;
3818             sr->numberOfRecordsReturned = pr->numberOfRecordsReturned;
3819             apdu = new_apdu;
3820         }
3821         if (pr->records &&
3822             pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint)
3823         {
3824             m_cache.add(odr_decode(),
3825                         pr->records->u.databaseOrSurDiagnostics,
3826                         m_resultSetStartPoint, -1);
3827             m_resultSetStartPoint = 0;
3828         }
3829     }
3830     if (m_cookie)
3831         set_otherInformationString(apdu, yaz_oid_userinfo_cookie, 1, m_cookie);
3832
3833     Yaz_Proxy *server = m_server; // save it. send_to_client may destroy us
3834
3835     if (server)
3836         server->send_to_client(apdu);
3837     if (apdu->which == Z_APDU_close)
3838         shutdown();
3839     else if (server)
3840         server->recv_GDU_more(true);
3841 }
3842
3843 void Yaz_Proxy::low_socket_close()
3844 {
3845 #if WIN32
3846 #else
3847     int i;
3848     for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
3849         if  (m_lo_fd[i] >= 0)
3850             ::close(m_lo_fd[i]);
3851 #endif
3852 }
3853
3854 void Yaz_Proxy::low_socket_open()
3855 {
3856 #if WIN32
3857 #else
3858     int i;
3859     for (i = 0; i<NO_SPARE_SOLARIS_FD; i++)
3860         m_lo_fd[i] = open("/dev/null", O_RDONLY);
3861 #endif
3862 }
3863
3864 int Yaz_Proxy::server(const char *addr)
3865 {
3866     int r = Z_Assoc::server(addr);
3867     if (!r)
3868     {
3869         yaz_log(YLOG_LOG, "%sStarted proxy "
3870 #ifdef VERSION
3871             VERSION
3872 #endif
3873             " on %s", m_session_str, addr);
3874         timeout(1);
3875     }
3876     return r;
3877 }
3878
3879 void Yaz_Proxy::base64_decode(const char *base64, char *buf, int buf_len)
3880 {
3881     const char *base64_chars =
3882         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
3883     int len = strlen(base64);
3884     int buf_pos = 0;
3885     int index = 1;
3886
3887     for (int pos = 0; pos <= len; pos++)
3888     {
3889         if (base64[pos] == '=' || buf_pos + 1 >= buf_len)
3890             break;
3891
3892         const char *ch_ptr = strchr(base64_chars, base64[pos]);
3893         if (!ch_ptr)
3894             break;
3895         char ch = (char) (ch_ptr - base64_chars);
3896         switch (index)
3897         {
3898         case 1:
3899             buf[buf_pos] = ch << 2;
3900             break;
3901         case 2:
3902             buf[buf_pos++] += (ch & 0x30) >> 4;
3903             buf[buf_pos] = (ch & 0x0f) << 4;
3904             break;
3905         case 3:
3906             buf[buf_pos++] += (ch & 0x3c) >> 2;
3907             buf[buf_pos] = (ch & 0x03) << 6;
3908             break;
3909         case 4:
3910             buf[buf_pos++] += ch;
3911         }
3912         if (index < 4)
3913             index++;
3914         else
3915             index = 1;
3916     }
3917     buf[buf_pos] = '\0';
3918 }
3919
3920 /*
3921  * Local variables:
3922  * c-basic-offset: 4
3923  * indent-tabs-mode: nil
3924  * End:
3925  * vim: shiftwidth=4 tabstop=8 expandtab
3926  */
3927