src/seshigh.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2010 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file seshigh.c
   7  * \brief Implements GFS session logic.
   8  *
   9  * Frontend server logic.
  10  *
  11  * This code receives incoming APDUs, and handles client requests by means
  12  * of the backend API.
  13  *
  14  * Some of the code is getting quite involved, compared to simpler servers -
  15  * primarily because it is asynchronous both in the communication with
  16  * the user and the backend. We think the complexity will pay off in
  17  * the form of greater flexibility when more asynchronous facilities
  18  * are implemented.
  19  *
  20  * Memory management has become somewhat involved. In the simple case, where
  21  * only one PDU is pending at a time, it will simply reuse the same memory,
  22  * once it has found its working size. When we enable multiple concurrent
  23  * operations, perhaps even with multiple parallel calls to the backend, it
  24  * will maintain a pool of buffers for encoding and decoding, trying to
  25  * minimize memory allocation/deallocation during normal operation.
  26  *
  27  */
  28
  29 #include <limits.h>
  30 #include <stdlib.h>
  31 #include <stdio.h>
  32 #include <assert.h>
  33 #include <ctype.h>
  34
  35 #if HAVE_SYS_TYPES_H
  36 #include <sys/types.h>
  37 #endif
  38 #if HAVE_SYS_STAT_H
  39 #include <sys/stat.h>
  40 #endif
  41
  42 #ifdef WIN32
  43 #include <io.h>
  44 #define S_ISREG(x) (x & _S_IFREG)
  45 #include <process.h>
  46 #endif
  47
  48 #if HAVE_UNISTD_H
  49 #include <unistd.h>
  50 #endif
  51
  52 #if YAZ_HAVE_XML2
  53 #include <libxml/parser.h>
  54 #include <libxml/tree.h>
  55 #endif
  56
  57 #include <yaz/yconfig.h>
  58 #include <yaz/xmalloc.h>
  59 #include <yaz/comstack.h>
  60 #include "eventl.h"
  61 #include "session.h"
  62 #include "mime.h"
  63 #include <yaz/proto.h>
  64 #include <yaz/oid_db.h>
  65 #include <yaz/log.h>
  66 #include <yaz/logrpn.h>
  67 #include <yaz/querytowrbuf.h>
  68 #include <yaz/statserv.h>
  69 #include <yaz/diagbib1.h>
  70 #include <yaz/charneg.h>
  71 #include <yaz/otherinfo.h>
  72 #include <yaz/yaz-util.h>
  73 #include <yaz/pquery.h>
  74 #include <yaz/oid_db.h>
  75
  76 #include <yaz/srw.h>
  77 #include <yaz/backend.h>
  78 #include <yaz/yaz-ccl.h>
  79
  80 static void process_gdu_request(association *assoc, request *req);
  81 static int process_z_request(association *assoc, request *req, char **msg);
  82 static int process_gdu_response(association *assoc, request *req, Z_GDU *res);
  83 static int process_z_response(association *assoc, request *req, Z_APDU *res);
  84 static Z_APDU *process_initRequest(association *assoc, request *reqb);
  85 static Z_External *init_diagnostics(ODR odr, int errcode,
  86                                     const char *errstring);
  87 static Z_APDU *process_searchRequest(association *assoc, request *reqb);
  88 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
  89                                       bend_search_rr *bsrr);
  90 static Z_APDU *process_presentRequest(association *assoc, request *reqb);
  91 static Z_APDU *process_scanRequest(association *assoc, request *reqb);
  92 static Z_APDU *process_sortRequest(association *assoc, request *reqb);
  93 static void process_close(association *assoc, request *reqb);
  94 static Z_APDU *process_deleteRequest(association *assoc, request *reqb);
  95 static Z_APDU *process_segmentRequest(association *assoc, request *reqb);
  96 static Z_APDU *process_ESRequest(association *assoc, request *reqb);
  97
  98 /* dynamic logging levels */
  99 static int logbits_set = 0;
 100 static int log_session = 0; /* one-line logs for session */
 101 static int log_sessiondetail = 0; /* more detailed stuff */
 102 static int log_request = 0; /* one-line logs for requests */
 103 static int log_requestdetail = 0;  /* more detailed stuff */
 104
 105 /** get_logbits sets global loglevel bits */
 106 static void get_logbits(void)
 107 { /* needs to be called after parsing cmd-line args that can set loglevels!*/
 108     if (!logbits_set)
 109     {
 110         logbits_set = 1;
 111         log_session = yaz_log_module_level("session");
 112         log_sessiondetail = yaz_log_module_level("sessiondetail");
 113         log_request = yaz_log_module_level("request");
 114         log_requestdetail = yaz_log_module_level("requestdetail");
 115     }
 116 }
 117
 118 static void wr_diag(WRBUF w, int error, const char *addinfo)
 119 {
 120     wrbuf_printf(w, "ERROR %d+", error);
 121     wrbuf_puts_replace_char(w, diagbib1_str(error), ' ', '_');
 122     if (addinfo)
 123     {
 124         wrbuf_puts(w, "+");
 125         wrbuf_puts_replace_char(w, addinfo, ' ', '_');
 126     }
 127     wrbuf_puts(w, " ");
 128 }
 129
 130 static int odr_int_to_int(Odr_int v)
 131 {
 132     if (v >= INT_MAX)
 133         return INT_MAX;
 134     else if (v <= INT_MIN)
 135         return INT_MIN;
 136     else
 137         return (int) v;
 138 }
 139
 140 /*
 141  * Create and initialize a new association-handle.
 142  *  channel  : iochannel for the current line.
 143  *  link     : communications channel.
 144  * Returns: 0 or a new association handle.
 145  */
 146 association *create_association(IOCHAN channel, COMSTACK link,
 147                                 const char *apdufile)
 148 {
 149     association *anew;
 150
 151     if (!logbits_set)
 152         get_logbits();
 153     if (!(anew = (association *)xmalloc(sizeof(*anew))))
 154         return 0;
 155     anew->init = 0;
 156     anew->version = 0;
 157     anew->last_control = 0;
 158     anew->client_chan = channel;
 159     anew->client_link = link;
 160     anew->cs_get_mask = 0;
 161     anew->cs_put_mask = 0;
 162     anew->cs_accept_mask = 0;
 163     if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
 164         !(anew->encode = odr_createmem(ODR_ENCODE)))
 165         return 0;
 166     if (apdufile && *apdufile)
 167     {
 168         FILE *f;
 169
 170         if (!(anew->print = odr_createmem(ODR_PRINT)))
 171             return 0;
 172         if (*apdufile == '@')
 173         {
 174             odr_setprint(anew->print, yaz_log_file());
 175         }
 176         else if (*apdufile != '-')
 177         {
 178             char filename[256];
 179             sprintf(filename, "%.200s.%ld", apdufile, (long)getpid());
 180             if (!(f = fopen(filename, "w")))
 181             {
 182                 yaz_log(YLOG_WARN|YLOG_ERRNO, "%s", filename);
 183                 return 0;
 184             }
 185             setvbuf(f, 0, _IONBF, 0);
 186             odr_setprint(anew->print, f);
 187         }
 188     }
 189     else
 190         anew->print = 0;
 191     anew->input_buffer = 0;
 192     anew->input_buffer_len = 0;
 193     anew->backend = 0;
 194     anew->state = ASSOC_NEW;
 195     request_initq(&anew->incoming);
 196     request_initq(&anew->outgoing);
 197     anew->proto = cs_getproto(link);
 198     anew->server = 0;
 199     return anew;
 200 }
 201
 202 /*
 203  * Free association and release resources.
 204  */
 205 void destroy_association(association *h)
 206 {
 207     statserv_options_block *cb = statserv_getcontrol();
 208     request *req;
 209
 210     xfree(h->init);
 211     odr_destroy(h->decode);
 212     odr_destroy(h->encode);
 213     if (h->print)
 214         odr_destroy(h->print);
 215     if (h->input_buffer)
 216     xfree(h->input_buffer);
 217     if (h->backend)
 218         (*cb->bend_close)(h->backend);
 219     while ((req = request_deq(&h->incoming)))
 220         request_release(req);
 221     while ((req = request_deq(&h->outgoing)))
 222         request_release(req);
 223     request_delq(&h->incoming);
 224     request_delq(&h->outgoing);
 225     xfree(h);
 226     xmalloc_trav("session closed");
 227     if (cb && cb->one_shot)
 228     {
 229         exit(0);
 230     }
 231 }
 232
 233 static void do_close_req(association *a, int reason, char *message,
 234                          request *req)
 235 {
 236     Z_APDU *apdu = zget_APDU(a->encode, Z_APDU_close);
 237     Z_Close *cls = apdu->u.close;
 238
 239     /* Purge request queue */
 240     while (request_deq(&a->incoming));
 241     while (request_deq(&a->outgoing));
 242     if (a->version >= 3)
 243     {
 244         yaz_log(log_requestdetail, "Sending Close PDU, reason=%d, message=%s",
 245             reason, message ? message : "none");
 246         *cls->closeReason = reason;
 247         cls->diagnosticInformation = message;
 248         process_z_response(a, req, apdu);
 249         iochan_settimeout(a->client_chan, 20);
 250     }
 251     else
 252     {
 253         request_release(req);
 254         yaz_log(log_requestdetail, "v2 client. No Close PDU");
 255         iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
 256         a->cs_put_mask = 0;
 257     }
 258     a->state = ASSOC_DEAD;
 259 }
 260
 261 static void do_close(association *a, int reason, char *message)
 262 {
 263     request *req = request_get(&a->outgoing);
 264     do_close_req(a, reason, message, req);
 265 }
 266
 267
 268 int ir_read(IOCHAN h, int event)
 269 {
 270     association *assoc = (association *)iochan_getdata(h);
 271     COMSTACK conn = assoc->client_link;
 272     request *req;
 273
 274     if ((assoc->cs_put_mask & EVENT_INPUT) == 0 && (event & assoc->cs_get_mask))
 275     {
 276         yaz_log(YLOG_DEBUG, "ir_session (input)");
 277         /* We aren't speaking to this fellow */
 278         if (assoc->state == ASSOC_DEAD)
 279         {
 280             yaz_log(log_sessiondetail, "Connection closed - end of session");
 281             cs_close(conn);
 282             destroy_association(assoc);
 283             iochan_destroy(h);
 284             return 0;
 285         }
 286         assoc->cs_get_mask = EVENT_INPUT;
 287
 288         do
 289         {
 290             int res = cs_get(conn, &assoc->input_buffer,
 291                              &assoc->input_buffer_len);
 292             if (res < 0 && cs_errno(conn) == CSBUFSIZE)
 293             {
 294                 yaz_log(log_session, "Connection error: %s res=%d",
 295                         cs_errmsg(cs_errno(conn)), res);
 296                 req = request_get(&assoc->incoming); /* get a new request */
 297                 do_close_req(assoc, Z_Close_protocolError,
 298                              "Incoming package too large", req);
 299                 return 0;
 300             }
 301             else if (res <= 0)
 302             {
 303                 yaz_log(log_session, "Connection closed by client");
 304                 assoc->state = ASSOC_DEAD;
 305                 return 0;
 306             }
 307             else if (res == 1) /* incomplete read - wait for more  */
 308             {
 309                 if (conn->io_pending & CS_WANT_WRITE)
 310                     assoc->cs_get_mask |= EVENT_OUTPUT;
 311                 iochan_setflag(h, assoc->cs_get_mask);
 312                 return 0;
 313             }
 314             /* we got a complete PDU. Let's decode it */
 315             yaz_log(YLOG_DEBUG, "Got PDU, %d bytes: lead=%02X %02X %02X", res,
 316                     assoc->input_buffer[0] & 0xff,
 317                     assoc->input_buffer[1] & 0xff,
 318                     assoc->input_buffer[2] & 0xff);
 319             req = request_get(&assoc->incoming); /* get a new request */
 320             odr_reset(assoc->decode);
 321             odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
 322             if (!z_GDU(assoc->decode, &req->gdu_request, 0, 0))
 323             {
 324                 yaz_log(YLOG_WARN, "ODR error on incoming PDU: %s [element %s] "
 325                         "[near byte %ld] ",
 326                         odr_errmsg(odr_geterror(assoc->decode)),
 327                         odr_getelement(assoc->decode),
 328                         (long) odr_offset(assoc->decode));
 329                 if (assoc->decode->error != OHTTP)
 330                 {
 331                     yaz_log(YLOG_WARN, "PDU dump:");
 332                     odr_dumpBER(yaz_log_file(), assoc->input_buffer, res);
 333                     request_release(req);
 334                     do_close(assoc, Z_Close_protocolError, "Malformed package");
 335                 }
 336                 else
 337                 {
 338                     Z_GDU *p = z_get_HTTP_Response(assoc->encode, 400);
 339                     assoc->state = ASSOC_DEAD;
 340                     process_gdu_response(assoc, req, p);
 341                 }
 342                 return 0;
 343             }
 344             req->request_mem = odr_extract_mem(assoc->decode);
 345             if (assoc->print)
 346             {
 347                 if (!z_GDU(assoc->print, &req->gdu_request, 0, 0))
 348                     yaz_log(YLOG_WARN, "ODR print error: %s",
 349                             odr_errmsg(odr_geterror(assoc->print)));
 350                 odr_reset(assoc->print);
 351             }
 352             request_enq(&assoc->incoming, req);
 353         }
 354         while (cs_more(conn));
 355     }
 356     return 1;
 357 }
 358
 359 /*
 360  * This is where PDUs from the client are read and the further
 361  * processing is initiated. Flow of control moves down through the
 362  * various process_* functions below, until the encoded result comes back up
 363  * to the output handler in here.
 364  *
 365  *  h     : the I/O channel that has an outstanding event.
 366  *  event : the current outstanding event.
 367  */
 368 void ir_session(IOCHAN h, int event)
 369 {
 370     int res;
 371     association *assoc = (association *)iochan_getdata(h);
 372     COMSTACK conn = assoc->client_link;
 373     request *req;
 374
 375     assert(h && conn && assoc);
 376     if (event == EVENT_TIMEOUT)
 377     {
 378         if (assoc->state != ASSOC_UP)
 379         {
 380             yaz_log(log_session, "Timeout. Closing connection");
 381             /* do we need to lod this at all */
 382             cs_close(conn);
 383             destroy_association(assoc);
 384             iochan_destroy(h);
 385         }
 386         else
 387         {
 388             yaz_log(log_sessiondetail, "Timeout. Sending Z39.50 Close");
 389             do_close(assoc, Z_Close_lackOfActivity, 0);
 390         }
 391         return;
 392     }
 393     if (event & assoc->cs_accept_mask)
 394     {
 395         if (!cs_accept(conn))
 396         {
 397             yaz_log(YLOG_WARN, "accept failed");
 398             destroy_association(assoc);
 399             iochan_destroy(h);
 400             return;
 401         }
 402         iochan_clearflag(h, EVENT_OUTPUT);
 403         if (conn->io_pending)
 404         {   /* cs_accept didn't complete */
 405             assoc->cs_accept_mask =
 406                 ((conn->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
 407                 ((conn->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
 408
 409             iochan_setflag(h, assoc->cs_accept_mask);
 410         }
 411         else
 412         {   /* cs_accept completed. Prepare for reading (cs_get) */
 413             assoc->cs_accept_mask = 0;
 414             assoc->cs_get_mask = EVENT_INPUT;
 415             iochan_setflag(h, assoc->cs_get_mask);
 416         }
 417         return;
 418     }
 419     if (event & assoc->cs_get_mask) /* input */
 420     {
 421         if (!ir_read(h, event))
 422             return;
 423         req = request_head(&assoc->incoming);
 424         if (req->state == REQUEST_IDLE)
 425         {
 426             request_deq(&assoc->incoming);
 427             process_gdu_request(assoc, req);
 428         }
 429     }
 430     if (event & assoc->cs_put_mask)
 431     {
 432         request *req = request_head(&assoc->outgoing);
 433
 434         assoc->cs_put_mask = 0;
 435         yaz_log(YLOG_DEBUG, "ir_session (output)");
 436         req->state = REQUEST_PENDING;
 437         switch (res = cs_put(conn, req->response, req->len_response))
 438         {
 439         case -1:
 440             yaz_log(log_sessiondetail, "Connection closed by client");
 441             cs_close(conn);
 442             destroy_association(assoc);
 443             iochan_destroy(h);
 444             break;
 445         case 0: /* all sent - release the request structure */
 446             yaz_log(YLOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
 447 #if 0
 448             yaz_log(YLOG_DEBUG, "HTTP out:\n%.*s", req->len_response,
 449                     req->response);
 450 #endif
 451             nmem_destroy(req->request_mem);
 452             request_deq(&assoc->outgoing);
 453             request_release(req);
 454             if (!request_head(&assoc->outgoing))
 455             {   /* restore mask for cs_get operation ... */
 456                 iochan_clearflag(h, EVENT_OUTPUT|EVENT_INPUT);
 457                 iochan_setflag(h, assoc->cs_get_mask);
 458                 if (assoc->state == ASSOC_DEAD)
 459                     iochan_setevent(assoc->client_chan, EVENT_TIMEOUT);
 460             }
 461             else
 462             {
 463                 assoc->cs_put_mask = EVENT_OUTPUT;
 464             }
 465             break;
 466         default:
 467             if (conn->io_pending & CS_WANT_WRITE)
 468                 assoc->cs_put_mask |= EVENT_OUTPUT;
 469             if (conn->io_pending & CS_WANT_READ)
 470                 assoc->cs_put_mask |= EVENT_INPUT;
 471             iochan_setflag(h, assoc->cs_put_mask);
 472         }
 473     }
 474     if (event & EVENT_EXCEPT)
 475     {
 476         yaz_log(YLOG_WARN, "ir_session (exception)");
 477         cs_close(conn);
 478         destroy_association(assoc);
 479         iochan_destroy(h);
 480     }
 481 }
 482
 483 static int process_z_request(association *assoc, request *req, char **msg);
 484
 485
 486 static void assoc_init_reset(association *assoc)
 487 {
 488     xfree(assoc->init);
 489     assoc->init = (bend_initrequest *) xmalloc(sizeof(*assoc->init));
 490
 491     assoc->init->stream = assoc->encode;
 492     assoc->init->print = assoc->print;
 493     assoc->init->auth = 0;
 494     assoc->init->referenceId = 0;
 495     assoc->init->implementation_version = 0;
 496     assoc->init->implementation_id = 0;
 497     assoc->init->implementation_name = 0;
 498     assoc->init->query_charset = 0;
 499     assoc->init->records_in_same_charset = 0;
 500     assoc->init->bend_sort = NULL;
 501     assoc->init->bend_search = NULL;
 502     assoc->init->bend_present = NULL;
 503     assoc->init->bend_esrequest = NULL;
 504     assoc->init->bend_delete = NULL;
 505     assoc->init->bend_scan = NULL;
 506     assoc->init->bend_segment = NULL;
 507     assoc->init->bend_fetch = NULL;
 508     assoc->init->bend_explain = NULL;
 509     assoc->init->bend_srw_scan = NULL;
 510     assoc->init->bend_srw_update = NULL;
 511     assoc->init->named_result_sets = 0;
 512
 513     assoc->init->charneg_request = NULL;
 514     assoc->init->charneg_response = NULL;
 515
 516     assoc->init->decode = assoc->decode;
 517     assoc->init->peer_name =
 518         odr_strdup(assoc->encode, cs_addrstr(assoc->client_link));
 519
 520     yaz_log(log_requestdetail, "peer %s", assoc->init->peer_name);
 521 }
 522
 523 static int srw_bend_init(association *assoc, Z_SRW_diagnostic **d, int *num, Z_SRW_PDU *sr)
 524 {
 525     statserv_options_block *cb = statserv_getcontrol();
 526     if (!assoc->init)
 527     {
 528         const char *encoding = "UTF-8";
 529         Z_External *ce;
 530         bend_initresult *binitres;
 531
 532         yaz_log(log_requestdetail, "srw_bend_init config=%s", cb->configname);
 533         assoc_init_reset(assoc);
 534
 535         if (sr->username)
 536         {
 537             Z_IdAuthentication *auth = (Z_IdAuthentication *)
 538                 odr_malloc(assoc->decode, sizeof(*auth));
 539             size_t len;
 540
 541             len = strlen(sr->username) + 1;
 542             if (sr->password)
 543                 len += strlen(sr->password) + 2;
 544             auth->which = Z_IdAuthentication_open;
 545             auth->u.open = (char *) odr_malloc(assoc->decode, len);
 546             strcpy(auth->u.open, sr->username);
 547             if (sr->password && *sr->password)
 548             {
 549                 strcat(auth->u.open, "/");
 550                 strcat(auth->u.open, sr->password);
 551             }
 552             assoc->init->auth = auth;
 553         }
 554
 555 #if 1
 556         ce = yaz_set_proposal_charneg(assoc->decode, &encoding, 1, 0, 0, 1);
 557         assoc->init->charneg_request = ce->u.charNeg3;
 558 #endif
 559         assoc->backend = 0;
 560         if (!(binitres = (*cb->bend_init)(assoc->init)))
 561         {
 562             assoc->state = ASSOC_DEAD;
 563             yaz_add_srw_diagnostic(assoc->encode, d, num,
 564                             YAZ_SRW_AUTHENTICATION_ERROR, 0);
 565             return 0;
 566         }
 567         assoc->backend = binitres->handle;
 568         assoc->init->auth = 0;
 569         if (binitres->errcode)
 570         {
 571             int srw_code = yaz_diag_bib1_to_srw(binitres->errcode);
 572             assoc->state = ASSOC_DEAD;
 573             yaz_add_srw_diagnostic(assoc->encode, d, num, srw_code,
 574                                    binitres->errstring);
 575             return 0;
 576         }
 577         return 1;
 578     }
 579     return 1;
 580 }
 581
 582 static int retrieve_fetch(association *assoc, bend_fetch_rr *rr)
 583 {
 584 #if YAZ_HAVE_XML2
 585     yaz_record_conv_t rc = 0;
 586     const char *match_schema = 0;
 587     Odr_oid *match_syntax = 0;
 588
 589     if (assoc->server)
 590     {
 591         int r;
 592         const char *input_schema = yaz_get_esn(rr->comp);
 593         Odr_oid *input_syntax_raw = rr->request_format;
 594
 595         const char *backend_schema = 0;
 596         Odr_oid *backend_syntax = 0;
 597
 598         r = yaz_retrieval_request(assoc->server->retrieval,
 599                                   input_schema,
 600                                   input_syntax_raw,
 601                                   &match_schema,
 602                                   &match_syntax,
 603                                   &rc,
 604                                   &backend_schema,
 605                                   &backend_syntax);
 606         if (r == -1) /* error ? */
 607         {
 608             const char *details = yaz_retrieval_get_error(
 609                 assoc->server->retrieval);
 610
 611             rr->errcode = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 612             if (details)
 613                 rr->errstring = odr_strdup(rr->stream, details);
 614             return -1;
 615         }
 616         else if (r == 1 || r == 3)
 617         {
 618             const char *details = input_schema;
 619             rr->errcode =
 620                 YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 621             if (details)
 622                 rr->errstring = odr_strdup(rr->stream, details);
 623             return -1;
 624         }
 625         else if (r == 2)
 626         {
 627             rr->errcode = YAZ_BIB1_RECORD_SYNTAX_UNSUPP;
 628             if (input_syntax_raw)
 629             {
 630                 char oidbuf[OID_STR_MAX];
 631                 oid_oid_to_dotstring(input_syntax_raw, oidbuf);
 632                 rr->errstring = odr_strdup(rr->stream, oidbuf);
 633             }
 634             return -1;
 635         }
 636         if (backend_schema)
 637         {
 638             yaz_set_esn(&rr->comp, backend_schema, odr_getmem(rr->stream));
 639         }
 640         if (backend_syntax)
 641             rr->request_format = backend_syntax;
 642     }
 643     (*assoc->init->bend_fetch)(assoc->backend, rr);
 644     if (rc && rr->record && rr->errcode == 0 && rr->len > 0)
 645     {   /* post conversion must take place .. */
 646         WRBUF output_record = wrbuf_alloc();
 647         int r = yaz_record_conv_record(rc, rr->record, rr->len, output_record);
 648         if (r)
 649         {
 650             const char *details = yaz_record_conv_get_error(rc);
 651             rr->errcode = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 652             if (details)
 653                 rr->errstring = odr_strdup(rr->stream, details);
 654         }
 655         else
 656         {
 657             rr->len = wrbuf_len(output_record);
 658             rr->record = (char *) odr_malloc(rr->stream, rr->len);
 659             memcpy(rr->record, wrbuf_buf(output_record), rr->len);
 660         }
 661         wrbuf_destroy(output_record);
 662     }
 663     if (match_syntax)
 664         rr->output_format = match_syntax;
 665     if (match_schema)
 666         rr->schema = odr_strdup(rr->stream, match_schema);
 667 #else
 668     (*assoc->init->bend_fetch)(assoc->backend, rr);
 669 #endif
 670     return 0;
 671 }
 672
 673 static int srw_bend_fetch(association *assoc, int pos,
 674                           Z_SRW_searchRetrieveRequest *srw_req,
 675                           Z_SRW_record *record,
 676                           const char **addinfo)
 677 {
 678     bend_fetch_rr rr;
 679     ODR o = assoc->encode;
 680
 681     rr.setname = "default";
 682     rr.number = pos;
 683     rr.referenceId = 0;
 684     rr.request_format = odr_oiddup(assoc->decode, yaz_oid_recsyn_xml);
 685
 686     rr.comp = (Z_RecordComposition *)
 687             odr_malloc(assoc->decode, sizeof(*rr.comp));
 688     rr.comp->which = Z_RecordComp_complex;
 689     rr.comp->u.complex = (Z_CompSpec *)
 690             odr_malloc(assoc->decode, sizeof(Z_CompSpec));
 691     rr.comp->u.complex->selectAlternativeSyntax = (bool_t *)
 692         odr_malloc(assoc->encode, sizeof(bool_t));
 693     *rr.comp->u.complex->selectAlternativeSyntax = 0;
 694     rr.comp->u.complex->num_dbSpecific = 0;
 695     rr.comp->u.complex->dbSpecific = 0;
 696     rr.comp->u.complex->num_recordSyntax = 0;
 697     rr.comp->u.complex->recordSyntax = 0;
 698
 699     rr.comp->u.complex->generic = (Z_Specification *)
 700             odr_malloc(assoc->decode, sizeof(Z_Specification));
 701
 702     /* schema uri = recordSchema (or NULL if recordSchema is not given) */
 703     rr.comp->u.complex->generic->which = Z_Schema_uri;
 704     rr.comp->u.complex->generic->schema.uri = srw_req->recordSchema;
 705
 706     /* ESN = recordSchema if recordSchema is present */
 707     rr.comp->u.complex->generic->elementSpec = 0;
 708     if (srw_req->recordSchema)
 709     {
 710         rr.comp->u.complex->generic->elementSpec =
 711             (Z_ElementSpec *) odr_malloc(assoc->encode, sizeof(Z_ElementSpec));
 712         rr.comp->u.complex->generic->elementSpec->which =
 713             Z_ElementSpec_elementSetName;
 714         rr.comp->u.complex->generic->elementSpec->u.elementSetName =
 715             srw_req->recordSchema;
 716     }
 717
 718     rr.stream = assoc->encode;
 719     rr.print = assoc->print;
 720
 721     rr.basename = 0;
 722     rr.len = 0;
 723     rr.record = 0;
 724     rr.last_in_set = 0;
 725     rr.errcode = 0;
 726     rr.errstring = 0;
 727     rr.surrogate_flag = 0;
 728     rr.schema = srw_req->recordSchema;
 729
 730     if (!assoc->init->bend_fetch)
 731         return 1;
 732
 733     retrieve_fetch(assoc, &rr);
 734
 735     if (rr.errcode && rr.surrogate_flag)
 736     {
 737         int code = yaz_diag_bib1_to_srw(rr.errcode);
 738         yaz_mk_sru_surrogate(o, record, pos, code, rr.errstring);
 739         return 0;
 740     }
 741     else if (rr.len >= 0)
 742     {
 743         record->recordData_buf = rr.record;
 744         record->recordData_len = rr.len;
 745         record->recordPosition = odr_intdup(o, pos);
 746         record->recordSchema = odr_strdup_null(
 747             o, rr.schema ? rr.schema : srw_req->recordSchema);
 748     }
 749     if (rr.errcode)
 750     {
 751         *addinfo = rr.errstring;
 752         return rr.errcode;
 753     }
 754     return 0;
 755 }
 756
 757 static int cql2pqf(ODR odr, const char *cql, cql_transform_t ct,
 758                    Z_Query *query_result)
 759 {
 760     /* have a CQL query and  CQL to PQF transform .. */
 761     CQL_parser cp = cql_parser_create();
 762     int r;
 763     int srw_errcode = 0;
 764     const char *add = 0;
 765     char rpn_buf[5120];
 766
 767     r = cql_parser_string(cp, cql);
 768     if (r)
 769     {
 770         srw_errcode = YAZ_SRW_QUERY_SYNTAX_ERROR;
 771     }
 772     if (!r)
 773     {
 774         /* Syntax OK */
 775         r = cql_transform_buf(ct,
 776                               cql_parser_result(cp),
 777                               rpn_buf, sizeof(rpn_buf)-1);
 778         if (r)
 779             srw_errcode = cql_transform_error(ct, &add);
 780     }
 781     if (!r)
 782     {
 783         /* Syntax & transform OK. */
 784         /* Convert PQF string to Z39.50 to RPN query struct */
 785         YAZ_PQF_Parser pp = yaz_pqf_create();
 786         Z_RPNQuery *rpnquery = yaz_pqf_parse(pp, odr, rpn_buf);
 787         if (!rpnquery)
 788         {
 789             size_t off;
 790             const char *pqf_msg;
 791             int code = yaz_pqf_error(pp, &pqf_msg, &off);
 792             yaz_log(YLOG_WARN, "PQF Parser Error %s (code %d)",
 793                     pqf_msg, code);
 794             srw_errcode = YAZ_SRW_QUERY_SYNTAX_ERROR;
 795         }
 796         else
 797         {
 798             query_result->which = Z_Query_type_1;
 799             query_result->u.type_1 = rpnquery;
 800         }
 801         yaz_pqf_destroy(pp);
 802     }
 803     cql_parser_destroy(cp);
 804     return srw_errcode;
 805 }
 806
 807 static int cql2pqf_scan(ODR odr, const char *cql, cql_transform_t ct,
 808                         Z_AttributesPlusTerm *result)
 809 {
 810     Z_Query query;
 811     Z_RPNQuery *rpn;
 812     int srw_error = cql2pqf(odr, cql, ct, &query);
 813     if (srw_error)
 814         return srw_error;
 815     if (query.which != Z_Query_type_1 && query.which != Z_Query_type_101)
 816         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* bad query type */
 817     rpn = query.u.type_1;
 818     if (!rpn->RPNStructure)
 819         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be structure */
 820     if (rpn->RPNStructure->which != Z_RPNStructure_simple)
 821         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be simple */
 822     if (rpn->RPNStructure->u.simple->which != Z_Operand_APT)
 823         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be be attributes + term */
 824     memcpy(result, rpn->RPNStructure->u.simple->u.attributesPlusTerm,
 825            sizeof(*result));
 826     return 0;
 827 }
 828
 829
 830 static int ccl2pqf(ODR odr, const Odr_oct *ccl, CCL_bibset bibset,
 831                    bend_search_rr *bsrr)
 832 {
 833     char *ccl0;
 834     struct ccl_rpn_node *node;
 835     int errcode, pos;
 836
 837     ccl0 = odr_strdupn(odr, (char*) ccl->buf, ccl->len);
 838     if ((node = ccl_find_str(bibset, ccl0, &errcode, &pos)) == 0)
 839     {
 840         bsrr->errstring = (char*) ccl_err_msg(errcode);
 841         return YAZ_SRW_QUERY_SYNTAX_ERROR;    /* Query syntax error */
 842     }
 843
 844     bsrr->query->which = Z_Query_type_1;
 845     bsrr->query->u.type_1 = ccl_rpn_query(odr, node);
 846     return 0;
 847 }
 848
 849 static void srw_bend_search(association *assoc,
 850                             Z_SRW_PDU *sr,
 851                             Z_SRW_PDU *res,
 852                             int *http_code)
 853 {
 854     Z_SRW_searchRetrieveResponse *srw_res = res->u.response;
 855     int srw_error = 0;
 856     Z_External *ext;
 857     Z_SRW_searchRetrieveRequest *srw_req = sr->u.request;
 858
 859     *http_code = 200;
 860     yaz_log(log_requestdetail, "Got SRW SearchRetrieveRequest");
 861     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
 862     if (srw_res->num_diagnostics == 0 && assoc->init)
 863     {
 864         bend_search_rr rr;
 865         rr.setname = "default";
 866         rr.replace_set = 1;
 867         rr.num_bases = 1;
 868         rr.basenames = &srw_req->database;
 869         rr.referenceId = 0;
 870         rr.srw_sortKeys = 0;
 871         rr.srw_setname = 0;
 872         rr.srw_setnameIdleTime = 0;
 873         rr.estimated_hit_count = 0;
 874         rr.partial_resultset = 0;
 875         rr.query = (Z_Query *) odr_malloc(assoc->decode, sizeof(*rr.query));
 876         rr.query->u.type_1 = 0;
 877         rr.extra_args = sr->extra_args;
 878         rr.extra_response_data = 0;
 879
 880         if (srw_req->query_type == Z_SRW_query_type_cql)
 881         {
 882             if (assoc->server && assoc->server->cql_transform)
 883             {
 884                 int srw_errcode = cql2pqf(assoc->encode, srw_req->query.cql,
 885                                           assoc->server->cql_transform,
 886                                           rr.query);
 887                 if (srw_errcode)
 888                 {
 889                     yaz_add_srw_diagnostic(assoc->encode,
 890                                            &srw_res->diagnostics,
 891                                            &srw_res->num_diagnostics,
 892                                            srw_errcode, 0);
 893                 }
 894             }
 895             else
 896             {
 897                 /* CQL query to backend. Wrap it - Z39.50 style */
 898                 ext = (Z_External *) odr_malloc(assoc->decode, sizeof(*ext));
 899                 ext->direct_reference = odr_getoidbystr(assoc->decode,
 900                                                         "1.2.840.10003.16.2");
 901                 ext->indirect_reference = 0;
 902                 ext->descriptor = 0;
 903                 ext->which = Z_External_CQL;
 904                 ext->u.cql = srw_req->query.cql;
 905
 906                 rr.query->which = Z_Query_type_104;
 907                 rr.query->u.type_104 =  ext;
 908             }
 909         }
 910         else if (srw_req->query_type == Z_SRW_query_type_pqf)
 911         {
 912             Z_RPNQuery *RPNquery;
 913             YAZ_PQF_Parser pqf_parser;
 914
 915             pqf_parser = yaz_pqf_create();
 916
 917             RPNquery = yaz_pqf_parse(pqf_parser, assoc->decode,
 918                                      srw_req->query.pqf);
 919             if (!RPNquery)
 920             {
 921                 const char *pqf_msg;
 922                 size_t off;
 923                 int code = yaz_pqf_error(pqf_parser, &pqf_msg, &off);
 924                 yaz_log(log_requestdetail, "Parse error %d %s near offset %ld",
 925                         code, pqf_msg, (long) off);
 926                 srw_error = YAZ_SRW_QUERY_SYNTAX_ERROR;
 927             }
 928
 929             rr.query->which = Z_Query_type_1;
 930             rr.query->u.type_1 =  RPNquery;
 931
 932             yaz_pqf_destroy(pqf_parser);
 933         }
 934         else
 935         {
 936             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
 937                                    &srw_res->num_diagnostics,
 938                                    YAZ_SRW_UNSUPP_QUERY_TYPE, 0);
 939         }
 940         if (rr.query->u.type_1)
 941         {
 942             rr.stream = assoc->encode;
 943             rr.decode = assoc->decode;
 944             rr.print = assoc->print;
 945             if ( srw_req->sort.sortKeys )
 946                 rr.srw_sortKeys = odr_strdup(assoc->encode,
 947                                              srw_req->sort.sortKeys );
 948             rr.association = assoc;
 949             rr.hits = 0;
 950             rr.errcode = 0;
 951             rr.errstring = 0;
 952             rr.search_info = 0;
 953             rr.search_input = 0;
 954             yaz_log_zquery_level(log_requestdetail,rr.query);
 955
 956             (assoc->init->bend_search)(assoc->backend, &rr);
 957             if (rr.errcode)
 958             {
 959                 if (rr.errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
 960                 {
 961                     *http_code = 404;
 962                 }
 963                 else
 964                 {
 965                     srw_error = yaz_diag_bib1_to_srw(rr.errcode);
 966                     yaz_add_srw_diagnostic(assoc->encode,
 967                                            &srw_res->diagnostics,
 968                                            &srw_res->num_diagnostics,
 969                                            srw_error, rr.errstring);
 970                 }
 971             }
 972             else
 973             {
 974                 int number = srw_req->maximumRecords ?
 975                     odr_int_to_int(*srw_req->maximumRecords) : 0;
 976                 int start = srw_req->startRecord ?
 977                     odr_int_to_int(*srw_req->startRecord) : 1;
 978
 979                 yaz_log(log_requestdetail, "Request to pack %d+%d out of "
 980                         ODR_INT_PRINTF,
 981                         start, number, rr.hits);
 982
 983                 srw_res->numberOfRecords = odr_intdup(assoc->encode, rr.hits);
 984                 if (rr.srw_setname)
 985                 {
 986                     srw_res->resultSetId =
 987                         odr_strdup(assoc->encode, rr.srw_setname );
 988                     srw_res->resultSetIdleTime =
 989                         odr_intdup(assoc->encode, *rr.srw_setnameIdleTime );
 990                 }
 991
 992                 if (start > rr.hits || start < 1)
 993                 {
 994                     /* if hits<=0 and start=1 we don't return a diagnostic */
 995                     if (start != 1)
 996                         yaz_add_srw_diagnostic(
 997                             assoc->encode,
 998                             &srw_res->diagnostics, &srw_res->num_diagnostics,
 999                             YAZ_SRW_FIRST_RECORD_POSITION_OUT_OF_RANGE, 0);
1000                 }
1001                 else if (number > 0)
1002                 {
1003                     int i;
1004                     int ok = 1;
1005                     if (start + number > rr.hits)
1006                         number = odr_int_to_int(rr.hits) - start + 1;
1007
1008                     /* Call bend_present if defined */
1009                     if (assoc->init->bend_present)
1010                     {
1011                         bend_present_rr *bprr = (bend_present_rr*)
1012                             odr_malloc(assoc->decode, sizeof(*bprr));
1013                         bprr->setname = "default";
1014                         bprr->start = start;
1015                         bprr->number = number;
1016                         if (srw_req->recordSchema)
1017                         {
1018                             bprr->comp = (Z_RecordComposition *) odr_malloc(assoc->decode,
1019                                                                             sizeof(*bprr->comp));
1020                             bprr->comp->which = Z_RecordComp_simple;
1021                             bprr->comp->u.simple = (Z_ElementSetNames *)
1022                                 odr_malloc(assoc->decode, sizeof(Z_ElementSetNames));
1023                             bprr->comp->u.simple->which = Z_ElementSetNames_generic;
1024                             bprr->comp->u.simple->u.generic = srw_req->recordSchema;
1025                         }
1026                         else
1027                         {
1028                             bprr->comp = 0;
1029                         }
1030                         bprr->stream = assoc->encode;
1031                         bprr->referenceId = 0;
1032                         bprr->print = assoc->print;
1033                         bprr->association = assoc;
1034                         bprr->errcode = 0;
1035                         bprr->errstring = NULL;
1036                         (*assoc->init->bend_present)(assoc->backend, bprr);
1037
1038                         if (bprr->errcode)
1039                         {
1040                             srw_error = yaz_diag_bib1_to_srw(bprr->errcode);
1041                             yaz_add_srw_diagnostic(assoc->encode,
1042                                                    &srw_res->diagnostics,
1043                                                    &srw_res->num_diagnostics,
1044                                                    srw_error, bprr->errstring);
1045                             ok = 0;
1046                         }
1047                     }
1048
1049                     if (ok)
1050                     {
1051                         int j = 0;
1052                         int packing = Z_SRW_recordPacking_string;
1053                         if (srw_req->recordPacking)
1054                         {
1055                             packing =
1056                                 yaz_srw_str_to_pack(srw_req->recordPacking);
1057                             if (packing == -1)
1058                                 packing = Z_SRW_recordPacking_string;
1059                         }
1060                         srw_res->records = (Z_SRW_record *)
1061                             odr_malloc(assoc->encode,
1062                                        number * sizeof(*srw_res->records));
1063
1064                         srw_res->extra_records = (Z_SRW_extra_record **)
1065                             odr_malloc(assoc->encode,
1066                                        number*sizeof(*srw_res->extra_records));
1067
1068                         for (i = 0; i<number; i++)
1069                         {
1070                             int errcode;
1071                             const char *addinfo = 0;
1072
1073                             srw_res->records[j].recordPacking = packing;
1074                             srw_res->records[j].recordData_buf = 0;
1075                             srw_res->extra_records[j] = 0;
1076                             yaz_log(YLOG_DEBUG, "srw_bend_fetch %d", i+start);
1077                             errcode = srw_bend_fetch(assoc, i+start, srw_req,
1078                                                      srw_res->records + j,
1079                                                      &addinfo);
1080                             if (errcode)
1081                             {
1082                                 yaz_add_srw_diagnostic(assoc->encode,
1083                                                        &srw_res->diagnostics,
1084                                                        &srw_res->num_diagnostics,
1085                                                        yaz_diag_bib1_to_srw(errcode),
1086                                                        addinfo);
1087
1088                                 break;
1089                             }
1090                             if (srw_res->records[j].recordData_buf)
1091                                 j++;
1092                         }
1093                         srw_res->num_records = j;
1094                         if (!j)
1095                             srw_res->records = 0;
1096                     }
1097                 }
1098                 if (rr.extra_response_data)
1099                 {
1100                     res->extraResponseData_buf = rr.extra_response_data;
1101                     res->extraResponseData_len = strlen(rr.extra_response_data);
1102                 }
1103                 if (rr.estimated_hit_count || rr.partial_resultset)
1104                 {
1105                     yaz_add_srw_diagnostic(
1106                         assoc->encode,
1107                         &srw_res->diagnostics,
1108                         &srw_res->num_diagnostics,
1109                         YAZ_SRW_RESULT_SET_CREATED_WITH_VALID_PARTIAL_RESULTS_AVAILABLE,
1110                         0);
1111                 }
1112             }
1113         }
1114     }
1115     if (log_request)
1116     {
1117         const char *querystr = "?";
1118         const char *querytype = "?";
1119         WRBUF wr = wrbuf_alloc();
1120
1121         switch (srw_req->query_type)
1122         {
1123         case Z_SRW_query_type_cql:
1124             querytype = "CQL";
1125             querystr = srw_req->query.cql;
1126             break;
1127         case Z_SRW_query_type_pqf:
1128             querytype = "PQF";
1129             querystr = srw_req->query.pqf;
1130             break;
1131         }
1132         wrbuf_printf(wr, "SRWSearch %s ", srw_req->database);
1133         if (srw_res->num_diagnostics)
1134             wrbuf_printf(wr, "ERROR %s", srw_res->diagnostics[0].uri);
1135         else if (*http_code != 200)
1136             wrbuf_printf(wr, "ERROR info:http/%d", *http_code);
1137         else if (srw_res->numberOfRecords)
1138         {
1139             wrbuf_printf(wr, "OK " ODR_INT_PRINTF,
1140                          (srw_res->numberOfRecords ?
1141                           *srw_res->numberOfRecords : 0));
1142         }
1143         wrbuf_printf(wr, " %s " ODR_INT_PRINTF "+%d",
1144                      (srw_res->resultSetId ?
1145                       srw_res->resultSetId : "-"),
1146                      (srw_req->startRecord ? *srw_req->startRecord : 1),
1147                      srw_res->num_records);
1148         yaz_log(log_request, "%s %s: %s", wrbuf_cstr(wr), querytype, querystr);
1149         wrbuf_destroy(wr);
1150     }
1151 }
1152
1153 static char *srw_bend_explain_default(bend_explain_rr *rr)
1154 {
1155 #if YAZ_HAVE_XML2
1156     xmlNodePtr ptr = (xmlNode *) rr->server_node_ptr;
1157     if (!ptr)
1158         return 0;
1159     for (ptr = ptr->children; ptr; ptr = ptr->next)
1160     {
1161         if (ptr->type != XML_ELEMENT_NODE)
1162             continue;
1163         if (!strcmp((const char *) ptr->name, "explain"))
1164         {
1165             int len;
1166             xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
1167             xmlChar *buf_out;
1168             char *content;
1169
1170             ptr = xmlCopyNode(ptr, 1);
1171
1172             xmlDocSetRootElement(doc, ptr);
1173
1174             xmlDocDumpMemory(doc, &buf_out, &len);
1175             content = (char*) odr_malloc(rr->stream, 1+len);
1176             memcpy(content, buf_out, len);
1177             content[len] = '\0';
1178
1179             xmlFree(buf_out);
1180             xmlFreeDoc(doc);
1181             rr->explain_buf = content;
1182             return 0;
1183         }
1184     }
1185 #endif
1186     return 0;
1187 }
1188
1189 static void srw_bend_explain(association *assoc,
1190                              Z_SRW_PDU *sr,
1191                              Z_SRW_explainResponse *srw_res,
1192                              int *http_code)
1193 {
1194     Z_SRW_explainRequest *srw_req = sr->u.explain_request;
1195     yaz_log(log_requestdetail, "Got SRW ExplainRequest");
1196     *http_code = 404;
1197     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1198     if (assoc->init)
1199     {
1200         bend_explain_rr rr;
1201
1202         rr.stream = assoc->encode;
1203         rr.decode = assoc->decode;
1204         rr.print = assoc->print;
1205         rr.explain_buf = 0;
1206         rr.database = srw_req->database;
1207         if (assoc->server)
1208             rr.server_node_ptr = assoc->server->server_node_ptr;
1209         else
1210             rr.server_node_ptr = 0;
1211         rr.schema = "http://explain.z3950.org/dtd/2.0/";
1212         if (assoc->init->bend_explain)
1213             (*assoc->init->bend_explain)(assoc->backend, &rr);
1214         else
1215             srw_bend_explain_default(&rr);
1216
1217         if (rr.explain_buf)
1218         {
1219             int packing = Z_SRW_recordPacking_string;
1220             if (srw_req->recordPacking)
1221             {
1222                 packing =
1223                     yaz_srw_str_to_pack(srw_req->recordPacking);
1224                 if (packing == -1)
1225                     packing = Z_SRW_recordPacking_string;
1226             }
1227             srw_res->record.recordSchema = rr.schema;
1228             srw_res->record.recordPacking = packing;
1229             srw_res->record.recordData_buf = rr.explain_buf;
1230             srw_res->record.recordData_len = strlen(rr.explain_buf);
1231             srw_res->record.recordPosition = 0;
1232             *http_code = 200;
1233         }
1234     }
1235 }
1236
1237 static void srw_bend_scan(association *assoc,
1238                           Z_SRW_PDU *sr,
1239                           Z_SRW_scanResponse *srw_res,
1240                           int *http_code)
1241 {
1242     Z_SRW_scanRequest *srw_req = sr->u.scan_request;
1243     yaz_log(log_requestdetail, "Got SRW ScanRequest");
1244
1245     *http_code = 200;
1246     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1247     if (srw_res->num_diagnostics == 0 && assoc->init)
1248     {
1249         int step_size = 0;
1250         struct scan_entry *save_entries;
1251
1252         bend_scan_rr *bsrr = (bend_scan_rr *)
1253             odr_malloc(assoc->encode, sizeof(*bsrr));
1254         bsrr->num_bases = 1;
1255         bsrr->basenames = &srw_req->database;
1256
1257         bsrr->num_entries = srw_req->maximumTerms ?
1258             odr_int_to_int(*srw_req->maximumTerms) : 10;
1259         bsrr->term_position = srw_req->responsePosition ?
1260             odr_int_to_int(*srw_req->responsePosition) : 1;
1261
1262         bsrr->errcode = 0;
1263         bsrr->errstring = 0;
1264         bsrr->referenceId = 0;
1265         bsrr->stream = assoc->encode;
1266         bsrr->print = assoc->print;
1267         bsrr->step_size = &step_size;
1268         bsrr->entries = 0;
1269         bsrr->setname = 0;
1270
1271         if (bsrr->num_entries > 0)
1272         {
1273             int i;
1274             bsrr->entries = (struct scan_entry *)
1275                 odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
1276                            bsrr->num_entries);
1277             for (i = 0; i<bsrr->num_entries; i++)
1278             {
1279                 bsrr->entries[i].term = 0;
1280                 bsrr->entries[i].occurrences = 0;
1281                 bsrr->entries[i].errcode = 0;
1282                 bsrr->entries[i].errstring = 0;
1283                 bsrr->entries[i].display_term = 0;
1284             }
1285         }
1286         save_entries = bsrr->entries;  /* save it so we can compare later */
1287
1288         if (srw_req->query_type == Z_SRW_query_type_pqf &&
1289             assoc->init->bend_scan)
1290         {
1291             YAZ_PQF_Parser pqf_parser = yaz_pqf_create();
1292
1293             bsrr->term = yaz_pqf_scan(pqf_parser, assoc->decode,
1294                                       &bsrr->attributeset,
1295                                       srw_req->scanClause.pqf);
1296             yaz_pqf_destroy(pqf_parser);
1297             bsrr->scanClause = 0;
1298             ((int (*)(void *, bend_scan_rr *))
1299              (*assoc->init->bend_scan))(assoc->backend, bsrr);
1300         }
1301         else if (srw_req->query_type == Z_SRW_query_type_cql
1302                  && assoc->init->bend_scan && assoc->server
1303                  && assoc->server->cql_transform)
1304         {
1305             int srw_error;
1306             bsrr->scanClause = 0;
1307             bsrr->attributeset = 0;
1308             bsrr->term = (Z_AttributesPlusTerm *)
1309                 odr_malloc(assoc->decode, sizeof(*bsrr->term));
1310             srw_error = cql2pqf_scan(assoc->encode,
1311                                      srw_req->scanClause.cql,
1312                                      assoc->server->cql_transform,
1313                                      bsrr->term);
1314             if (srw_error)
1315                 yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1316                                        &srw_res->num_diagnostics,
1317                                        srw_error, 0);
1318             else
1319             {
1320                 ((int (*)(void *, bend_scan_rr *))
1321                  (*assoc->init->bend_scan))(assoc->backend, bsrr);
1322             }
1323         }
1324         else if (srw_req->query_type == Z_SRW_query_type_cql
1325                  && assoc->init->bend_srw_scan)
1326         {
1327             bsrr->term = 0;
1328             bsrr->attributeset = 0;
1329             bsrr->scanClause = srw_req->scanClause.cql;
1330             ((int (*)(void *, bend_scan_rr *))
1331              (*assoc->init->bend_srw_scan))(assoc->backend, bsrr);
1332         }
1333         else
1334         {
1335             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1336                                    &srw_res->num_diagnostics,
1337                                    YAZ_SRW_UNSUPP_OPERATION, "scan");
1338         }
1339         if (bsrr->errcode)
1340         {
1341             int srw_error;
1342             if (bsrr->errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
1343             {
1344                 *http_code = 404;
1345                 return;
1346             }
1347             srw_error = yaz_diag_bib1_to_srw(bsrr->errcode);
1348
1349             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1350                                    &srw_res->num_diagnostics,
1351                                    srw_error, bsrr->errstring);
1352         }
1353         else if (srw_res->num_diagnostics == 0 && bsrr->num_entries)
1354         {
1355             int i;
1356             srw_res->terms = (Z_SRW_scanTerm*)
1357                 odr_malloc(assoc->encode, sizeof(*srw_res->terms) *
1358                            bsrr->num_entries);
1359
1360             srw_res->num_terms =  bsrr->num_entries;
1361             for (i = 0; i<bsrr->num_entries; i++)
1362             {
1363                 Z_SRW_scanTerm *t = srw_res->terms + i;
1364                 t->value = odr_strdup(assoc->encode, bsrr->entries[i].term);
1365                 t->numberOfRecords =
1366                     odr_intdup(assoc->encode, bsrr->entries[i].occurrences);
1367                 t->displayTerm = 0;
1368                 if (save_entries == bsrr->entries &&
1369                     bsrr->entries[i].display_term)
1370                 {
1371                     /* the entries was _not_ set by the handler. So it's
1372                        safe to test for new member display_term. It is
1373                        NULL'ed by us.
1374                     */
1375                     t->displayTerm = odr_strdup(assoc->encode,
1376                                                 bsrr->entries[i].display_term);
1377                 }
1378                 t->whereInList = 0;
1379             }
1380         }
1381     }
1382     if (log_request)
1383     {
1384         WRBUF wr = wrbuf_alloc();
1385         const char *querytype = 0;
1386         const char *querystr = 0;
1387
1388         switch(srw_req->query_type)
1389         {
1390         case Z_SRW_query_type_pqf:
1391             querytype = "PQF";
1392             querystr = srw_req->scanClause.pqf;
1393             break;
1394         case Z_SRW_query_type_cql:
1395             querytype = "CQL";
1396             querystr = srw_req->scanClause.cql;
1397             break;
1398         default:
1399             querytype = "UNKNOWN";
1400             querystr = "";
1401         }
1402
1403         wrbuf_printf(wr, "SRWScan %s ", srw_req->database);
1404
1405         if (srw_res->num_diagnostics)
1406             wrbuf_printf(wr, "ERROR %s - ", srw_res->diagnostics[0].uri);
1407         else if (srw_res->num_terms)
1408             wrbuf_printf(wr, "OK %d - ", srw_res->num_terms);
1409         else
1410             wrbuf_printf(wr, "OK - - ");
1411
1412         wrbuf_printf(wr, ODR_INT_PRINTF "+" ODR_INT_PRINTF " ",
1413                      (srw_req->responsePosition ?
1414                       *srw_req->responsePosition : 1),
1415                      (srw_req->maximumTerms ?
1416                       *srw_req->maximumTerms : 1));
1417         /* there is no step size in SRU/W ??? */
1418         wrbuf_printf(wr, "%s: %s ", querytype, querystr);
1419         yaz_log(log_request, "%s ", wrbuf_cstr(wr) );
1420         wrbuf_destroy(wr);
1421     }
1422
1423 }
1424
1425 static void srw_bend_update(association *assoc,
1426                             Z_SRW_PDU *sr,
1427                             Z_SRW_updateResponse *srw_res,
1428                             int *http_code)
1429 {
1430     Z_SRW_updateRequest *srw_req = sr->u.update_request;
1431     yaz_log(log_session, "SRWUpdate action=%s", srw_req->operation);
1432     yaz_log(YLOG_DEBUG, "num_diag = %d", srw_res->num_diagnostics );
1433     *http_code = 404;
1434     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1435     if (assoc->init)
1436     {
1437         bend_update_rr rr;
1438         Z_SRW_extra_record *extra = srw_req->extra_record;
1439
1440         rr.stream = assoc->encode;
1441         rr.print = assoc->print;
1442         rr.num_bases = 1;
1443         rr.basenames = &srw_req->database;
1444         rr.operation = srw_req->operation;
1445         rr.operation_status = "failed";
1446         rr.record_id = 0;
1447         rr.record_versions = 0;
1448         rr.num_versions = 0;
1449         rr.record_packing = "string";
1450         rr.record_schema = 0;
1451         rr.record_data = 0;
1452         rr.extra_record_data = 0;
1453         rr.extra_request_data = 0;
1454         rr.extra_response_data = 0;
1455         rr.uri = 0;
1456         rr.message = 0;
1457         rr.details = 0;
1458
1459         *http_code = 200;
1460         if (rr.operation == 0)
1461         {
1462             yaz_add_sru_update_diagnostic(
1463                 assoc->encode, &srw_res->diagnostics,
1464                 &srw_res->num_diagnostics,
1465                 YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1466                 "action" );
1467             return;
1468         }
1469         yaz_log(YLOG_DEBUG, "basename = %s", rr.basenames[0] );
1470         yaz_log(YLOG_DEBUG, "Operation = %s", rr.operation );
1471         if (!strcmp( rr.operation, "delete"))
1472         {
1473             if (srw_req->record && !srw_req->record->recordSchema)
1474             {
1475                 rr.record_schema = odr_strdup(
1476                     assoc->encode,
1477                     srw_req->record->recordSchema);
1478             }
1479             if (srw_req->record)
1480             {
1481                 rr.record_data = odr_strdupn(
1482                     assoc->encode,
1483                     srw_req->record->recordData_buf,
1484                     srw_req->record->recordData_len );
1485             }
1486             if (extra && extra->extraRecordData_len)
1487             {
1488                 rr.extra_record_data = odr_strdupn(
1489                     assoc->encode,
1490                     extra->extraRecordData_buf,
1491                     extra->extraRecordData_len );
1492             }
1493             if (srw_req->recordId)
1494                 rr.record_id = srw_req->recordId;
1495             else if (extra && extra->recordIdentifier)
1496                 rr.record_id = extra->recordIdentifier;
1497         }
1498         else if (!strcmp(rr.operation, "replace"))
1499         {
1500             if (srw_req->recordId)
1501                 rr.record_id = srw_req->recordId;
1502             else if (extra && extra->recordIdentifier)
1503                 rr.record_id = extra->recordIdentifier;
1504             else
1505             {
1506                 yaz_add_sru_update_diagnostic(
1507                     assoc->encode, &srw_res->diagnostics,
1508                     &srw_res->num_diagnostics,
1509                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1510                     "recordIdentifier");
1511             }
1512             if (!srw_req->record)
1513             {
1514                 yaz_add_sru_update_diagnostic(
1515                     assoc->encode, &srw_res->diagnostics,
1516                     &srw_res->num_diagnostics,
1517                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1518                     "record");
1519             }
1520             else
1521             {
1522                 if (srw_req->record->recordSchema)
1523                     rr.record_schema = odr_strdup(
1524                         assoc->encode, srw_req->record->recordSchema);
1525                 if (srw_req->record->recordData_len )
1526                 {
1527                     rr.record_data = odr_strdupn(assoc->encode,
1528                                                  srw_req->record->recordData_buf,
1529                                                  srw_req->record->recordData_len );
1530                 }
1531                 else
1532                 {
1533                     yaz_add_sru_update_diagnostic(
1534                         assoc->encode, &srw_res->diagnostics,
1535                         &srw_res->num_diagnostics,
1536                         YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1537                         "recordData" );
1538                 }
1539             }
1540             if (extra && extra->extraRecordData_len)
1541             {
1542                 rr.extra_record_data = odr_strdupn(
1543                     assoc->encode,
1544                     extra->extraRecordData_buf,
1545                     extra->extraRecordData_len );
1546             }
1547         }
1548         else if (!strcmp(rr.operation, "insert"))
1549         {
1550             if (srw_req->recordId)
1551                 rr.record_id = srw_req->recordId;
1552             else if (extra)
1553                 rr.record_id = extra->recordIdentifier;
1554
1555             if (srw_req->record)
1556             {
1557                 if (srw_req->record->recordSchema)
1558                     rr.record_schema = odr_strdup(
1559                         assoc->encode, srw_req->record->recordSchema);
1560
1561                 if (srw_req->record->recordData_len)
1562                     rr.record_data = odr_strdupn(
1563                         assoc->encode,
1564                         srw_req->record->recordData_buf,
1565                         srw_req->record->recordData_len );
1566             }
1567             if (extra && extra->extraRecordData_len)
1568             {
1569                 rr.extra_record_data = odr_strdupn(
1570                     assoc->encode,
1571                     extra->extraRecordData_buf,
1572                     extra->extraRecordData_len );
1573             }
1574         }
1575         else
1576             yaz_add_sru_update_diagnostic(assoc->encode, &srw_res->diagnostics,
1577                                           &srw_res->num_diagnostics,
1578                                           YAZ_SRU_UPDATE_INVALID_ACTION,
1579                                           rr.operation );
1580
1581         if (srw_req->record)
1582         {
1583             const char *pack_str =
1584                 yaz_srw_pack_to_str(srw_req->record->recordPacking);
1585             if (pack_str)
1586                 rr.record_packing = odr_strdup(assoc->encode, pack_str);
1587         }
1588
1589         if (srw_req->num_recordVersions)
1590         {
1591             rr.record_versions = srw_req->recordVersions;
1592             rr.num_versions = srw_req->num_recordVersions;
1593         }
1594         if (srw_req->extraRequestData_len)
1595         {
1596             rr.extra_request_data = odr_strdupn(assoc->encode,
1597                                                 srw_req->extraRequestData_buf,
1598                                                 srw_req->extraRequestData_len );
1599         }
1600         if (srw_res->num_diagnostics == 0)
1601         {
1602             if ( assoc->init->bend_srw_update)
1603                 (*assoc->init->bend_srw_update)(assoc->backend, &rr);
1604             else
1605                 yaz_add_sru_update_diagnostic(
1606                     assoc->encode, &srw_res->diagnostics,
1607                     &srw_res->num_diagnostics,
1608                     YAZ_SRU_UPDATE_UNSPECIFIED_DATABASE_ERROR,
1609                     "No Update backend handler");
1610         }
1611
1612         if (rr.uri)
1613             yaz_add_srw_diagnostic_uri(assoc->encode,
1614                                        &srw_res->diagnostics,
1615                                        &srw_res->num_diagnostics,
1616                                        rr.uri,
1617                                        rr.message,
1618                                        rr.details);
1619         srw_res->recordId = rr.record_id;
1620         srw_res->operationStatus = rr.operation_status;
1621         srw_res->recordVersions = rr.record_versions;
1622         srw_res->num_recordVersions = rr.num_versions;
1623         if (srw_res->extraResponseData_len)
1624         {
1625             srw_res->extraResponseData_buf = rr.extra_response_data;
1626             srw_res->extraResponseData_len = strlen(rr.extra_response_data);
1627         }
1628         if (srw_res->num_diagnostics == 0 && rr.record_data)
1629         {
1630             srw_res->record = yaz_srw_get_record(assoc->encode);
1631             srw_res->record->recordSchema = rr.record_schema;
1632             if (rr.record_packing)
1633             {
1634                 int pack = yaz_srw_str_to_pack(rr.record_packing);
1635
1636                 if (pack == -1)
1637                 {
1638                     pack = Z_SRW_recordPacking_string;
1639                     yaz_log(YLOG_WARN, "Back packing %s from backend",
1640                             rr.record_packing);
1641                 }
1642                 srw_res->record->recordPacking = pack;
1643             }
1644             srw_res->record->recordData_buf = rr.record_data;
1645             srw_res->record->recordData_len = strlen(rr.record_data);
1646             if (rr.extra_record_data)
1647             {
1648                 Z_SRW_extra_record *ex =
1649                     yaz_srw_get_extra_record(assoc->encode);
1650                 srw_res->extra_record = ex;
1651                 ex->extraRecordData_buf = rr.extra_record_data;
1652                 ex->extraRecordData_len = strlen(rr.extra_record_data);
1653             }
1654         }
1655     }
1656 }
1657
1658 /* check if path is OK (1); BAD (0) */
1659 static int check_path(const char *path)
1660 {
1661     if (*path != '/')
1662         return 0;
1663     if (strstr(path, ".."))
1664         return 0;
1665     return 1;
1666 }
1667
1668 static char *read_file(const char *fname, ODR o, size_t *sz)
1669 {
1670     char *buf;
1671     FILE *inf = fopen(fname, "rb");
1672     if (!inf)
1673         return 0;
1674
1675     fseek(inf, 0L, SEEK_END);
1676     *sz = ftell(inf);
1677     rewind(inf);
1678     buf = (char *) odr_malloc(o, *sz);
1679     if (fread(buf, 1, *sz, inf) != *sz)
1680         yaz_log(YLOG_WARN|YLOG_ERRNO, "short read %s", fname);
1681     fclose(inf);
1682     return buf;
1683 }
1684
1685 static void process_http_request(association *assoc, request *req)
1686 {
1687     Z_HTTP_Request *hreq = req->gdu_request->u.HTTP_Request;
1688     ODR o = assoc->encode;
1689     int r = 2;  /* 2=NOT TAKEN, 1=TAKEN, 0=SOAP TAKEN */
1690     Z_SRW_PDU *sr = 0;
1691     Z_SOAP *soap_package = 0;
1692     Z_GDU *p = 0;
1693     char *charset = 0;
1694     Z_HTTP_Response *hres = 0;
1695     int keepalive = 1;
1696     const char *stylesheet = 0; /* for now .. set later */
1697     Z_SRW_diagnostic *diagnostic = 0;
1698     int num_diagnostic = 0;
1699     const char *host = z_HTTP_header_lookup(hreq->headers, "Host");
1700
1701     yaz_log(log_request, "%s %s HTTP/%s", hreq->method, hreq->path, hreq->version);
1702     if (!control_association(assoc, host, 0))
1703     {
1704         p = z_get_HTTP_Response(o, 404);
1705         r = 1;
1706     }
1707     if (r == 2 && assoc->server && assoc->server->docpath
1708         && hreq->path[0] == '/'
1709         &&
1710         /* check if path is a proper prefix of documentroot */
1711         strncmp(hreq->path+1, assoc->server->docpath,
1712                 strlen(assoc->server->docpath))
1713         == 0)
1714     {
1715         if (!check_path(hreq->path))
1716         {
1717             yaz_log(YLOG_LOG, "File %s access forbidden", hreq->path+1);
1718             p = z_get_HTTP_Response(o, 404);
1719         }
1720         else
1721         {
1722             size_t content_size = 0;
1723             char *content_buf = read_file(hreq->path+1, o, &content_size);
1724             if (!content_buf)
1725             {
1726                 yaz_log(YLOG_LOG, "File %s not found", hreq->path+1);
1727                 p = z_get_HTTP_Response(o, 404);
1728             }
1729             else
1730             {
1731                 const char *ctype = 0;
1732                 yaz_mime_types types = yaz_mime_types_create();
1733
1734                 yaz_mime_types_add(types, "xsl", "application/xml");
1735                 yaz_mime_types_add(types, "xml", "application/xml");
1736                 yaz_mime_types_add(types, "css", "text/css");
1737                 yaz_mime_types_add(types, "html", "text/html");
1738                 yaz_mime_types_add(types, "htm", "text/html");
1739                 yaz_mime_types_add(types, "txt", "text/plain");
1740                 yaz_mime_types_add(types, "js", "application/x-javascript");
1741
1742                 yaz_mime_types_add(types, "gif", "image/gif");
1743                 yaz_mime_types_add(types, "png", "image/png");
1744                 yaz_mime_types_add(types, "jpg", "image/jpeg");
1745                 yaz_mime_types_add(types, "jpeg", "image/jpeg");
1746
1747                 ctype = yaz_mime_lookup_fname(types, hreq->path);
1748                 if (!ctype)
1749                 {
1750                     yaz_log(YLOG_LOG, "No mime type for %s", hreq->path+1);
1751                     p = z_get_HTTP_Response(o, 404);
1752                 }
1753                 else
1754                 {
1755                     p = z_get_HTTP_Response(o, 200);
1756                     hres = p->u.HTTP_Response;
1757                     hres->content_buf = content_buf;
1758                     hres->content_len = content_size;
1759                     z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1760                 }
1761                 yaz_mime_types_destroy(types);
1762             }
1763         }
1764         r = 1;
1765     }
1766
1767     if (r == 2)
1768     {
1769         r = yaz_srw_decode(hreq, &sr, &soap_package, assoc->decode, &charset);
1770         yaz_log(YLOG_DEBUG, "yaz_srw_decode returned %d", r);
1771     }
1772     if (r == 2)  /* not taken */
1773     {
1774         r = yaz_sru_decode(hreq, &sr, &soap_package, assoc->decode, &charset,
1775                            &diagnostic, &num_diagnostic);
1776         yaz_log(YLOG_DEBUG, "yaz_sru_decode returned %d", r);
1777     }
1778     if (r == 0)  /* decode SRW/SRU OK .. */
1779     {
1780         int http_code = 200;
1781         if (sr->which == Z_SRW_searchRetrieve_request)
1782         {
1783             Z_SRW_PDU *res =
1784                 yaz_srw_get_pdu(assoc->encode, Z_SRW_searchRetrieve_response,
1785                                 sr->srw_version);
1786             stylesheet = sr->u.request->stylesheet;
1787             if (num_diagnostic)
1788             {
1789                 res->u.response->diagnostics = diagnostic;
1790                 res->u.response->num_diagnostics = num_diagnostic;
1791             }
1792             else
1793             {
1794                 srw_bend_search(assoc, sr, res, &http_code);
1795             }
1796             if (http_code == 200)
1797                 soap_package->u.generic->p = res;
1798         }
1799         else if (sr->which == Z_SRW_explain_request)
1800         {
1801             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_explain_response,
1802                                              sr->srw_version);
1803             stylesheet = sr->u.explain_request->stylesheet;
1804             if (num_diagnostic)
1805             {
1806                 res->u.explain_response->diagnostics = diagnostic;
1807                 res->u.explain_response->num_diagnostics = num_diagnostic;
1808             }
1809             srw_bend_explain(assoc, sr, res->u.explain_response, &http_code);
1810             if (http_code == 200)
1811                 soap_package->u.generic->p = res;
1812         }
1813         else if (sr->which == Z_SRW_scan_request)
1814         {
1815             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_scan_response,
1816                                              sr->srw_version);
1817             stylesheet = sr->u.scan_request->stylesheet;
1818             if (num_diagnostic)
1819             {
1820                 res->u.scan_response->diagnostics = diagnostic;
1821                 res->u.scan_response->num_diagnostics = num_diagnostic;
1822             }
1823             srw_bend_scan(assoc, sr, res->u.scan_response, &http_code);
1824             if (http_code == 200)
1825                 soap_package->u.generic->p = res;
1826         }
1827         else if (sr->which == Z_SRW_update_request)
1828         {
1829             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_update_response,
1830                                              sr->srw_version);
1831             yaz_log(YLOG_DEBUG, "handling SRW UpdateRequest");
1832             if (num_diagnostic)
1833             {
1834                 res->u.update_response->diagnostics = diagnostic;
1835                 res->u.update_response->num_diagnostics = num_diagnostic;
1836             }
1837             yaz_log(YLOG_DEBUG, "num_diag = %d", res->u.update_response->num_diagnostics );
1838             srw_bend_update(assoc, sr, res->u.update_response, &http_code);
1839             if (http_code == 200)
1840                 soap_package->u.generic->p = res;
1841         }
1842         else
1843         {
1844             yaz_log(log_request, "SOAP ERROR");
1845             /* FIXME - what error, what query */
1846             http_code = 500;
1847             z_soap_error(assoc->encode, soap_package,
1848                          "SOAP-ENV:Client", "Bad method", 0);
1849         }
1850         if (http_code == 200 || http_code == 500)
1851         {
1852             static Z_SOAP_Handler soap_handlers[4] = {
1853 #if YAZ_HAVE_XML2
1854                 {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
1855                 {YAZ_XMLNS_SRU_v1_0, 0, (Z_SOAP_fun) yaz_srw_codec},
1856                 {YAZ_XMLNS_UPDATE_v0_9, 0, (Z_SOAP_fun) yaz_ucp_codec},
1857 #endif
1858                 {0, 0, 0}
1859             };
1860             char ctype[80];
1861             int ret;
1862             p = z_get_HTTP_Response(o, 200);
1863             hres = p->u.HTTP_Response;
1864
1865             if (!stylesheet && assoc->server)
1866                 stylesheet = assoc->server->stylesheet;
1867
1868             /* empty stylesheet means NO stylesheet */
1869             if (stylesheet && *stylesheet == '\0')
1870                 stylesheet = 0;
1871
1872             ret = z_soap_codec_enc_xsl(assoc->encode, &soap_package,
1873                                        &hres->content_buf, &hres->content_len,
1874                                        soap_handlers, charset, stylesheet);
1875             hres->code = http_code;
1876
1877             strcpy(ctype, "text/xml");
1878             if (charset && strlen(charset) < sizeof(ctype)-30)
1879             {
1880                 strcat(ctype, "; charset=");
1881                 strcat(ctype, charset);
1882             }
1883             z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1884         }
1885         else
1886             p = z_get_HTTP_Response(o, http_code);
1887     }
1888
1889     if (p == 0)
1890         p = z_get_HTTP_Response(o, 500);
1891     hres = p->u.HTTP_Response;
1892     if (!strcmp(hreq->version, "1.0"))
1893     {
1894         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1895         if (v && !strcmp(v, "Keep-Alive"))
1896             keepalive = 1;
1897         else
1898             keepalive = 0;
1899         hres->version = "1.0";
1900     }
1901     else
1902     {
1903         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1904         if (v && !strcmp(v, "close"))
1905             keepalive = 0;
1906         else
1907             keepalive = 1;
1908         hres->version = "1.1";
1909     }
1910     if (!keepalive || !assoc->last_control->keepalive)
1911     {
1912         z_HTTP_header_add(o, &hres->headers, "Connection", "close");
1913         assoc->state = ASSOC_DEAD;
1914         assoc->cs_get_mask = 0;
1915     }
1916     else
1917     {
1918         int t;
1919         const char *alive = z_HTTP_header_lookup(hreq->headers, "Keep-Alive");
1920
1921         if (alive && isdigit(*(const unsigned char *) alive))
1922             t = atoi(alive);
1923         else
1924             t = 15;
1925         if (t < 0 || t > 3600)
1926             t = 3600;
1927         iochan_settimeout(assoc->client_chan,t);
1928         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
1929     }
1930     process_gdu_response(assoc, req, p);
1931 }
1932
1933 static void process_gdu_request(association *assoc, request *req)
1934 {
1935     if (req->gdu_request->which == Z_GDU_Z3950)
1936     {
1937         char *msg = 0;
1938         req->apdu_request = req->gdu_request->u.z3950;
1939         if (process_z_request(assoc, req, &msg) < 0)
1940             do_close_req(assoc, Z_Close_systemProblem, msg, req);
1941     }
1942     else if (req->gdu_request->which == Z_GDU_HTTP_Request)
1943         process_http_request(assoc, req);
1944     else
1945     {
1946         do_close_req(assoc, Z_Close_systemProblem, "bad protocol packet", req);
1947     }
1948 }
1949
1950 /*
1951  * Initiate request processing.
1952  */
1953 static int process_z_request(association *assoc, request *req, char **msg)
1954 {
1955     Z_APDU *res;
1956     int retval;
1957
1958     *msg = "Unknown Error";
1959     assert(req && req->state == REQUEST_IDLE);
1960     if (req->apdu_request->which != Z_APDU_initRequest && !assoc->init)
1961     {
1962         *msg = "Missing InitRequest";
1963         return -1;
1964     }
1965     switch (req->apdu_request->which)
1966     {
1967     case Z_APDU_initRequest:
1968         res = process_initRequest(assoc, req); break;
1969     case Z_APDU_searchRequest:
1970         res = process_searchRequest(assoc, req); break;
1971     case Z_APDU_presentRequest:
1972         res = process_presentRequest(assoc, req); break;
1973     case Z_APDU_scanRequest:
1974         if (assoc->init->bend_scan)
1975             res = process_scanRequest(assoc, req);
1976         else
1977         {
1978             *msg = "Cannot handle Scan APDU";
1979             return -1;
1980         }
1981         break;
1982     case Z_APDU_extendedServicesRequest:
1983         if (assoc->init->bend_esrequest)
1984             res = process_ESRequest(assoc, req);
1985         else
1986         {
1987             *msg = "Cannot handle Extended Services APDU";
1988             return -1;
1989         }
1990         break;
1991     case Z_APDU_sortRequest:
1992         if (assoc->init->bend_sort)
1993             res = process_sortRequest(assoc, req);
1994         else
1995         {
1996             *msg = "Cannot handle Sort APDU";
1997             return -1;
1998         }
1999         break;
2000     case Z_APDU_close:
2001         process_close(assoc, req);
2002         return 0;
2003     case Z_APDU_deleteResultSetRequest:
2004         if (assoc->init->bend_delete)
2005             res = process_deleteRequest(assoc, req);
2006         else
2007         {
2008             *msg = "Cannot handle Delete APDU";
2009             return -1;
2010         }
2011         break;
2012     case Z_APDU_segmentRequest:
2013         if (assoc->init->bend_segment)
2014         {
2015             res = process_segmentRequest(assoc, req);
2016         }
2017         else
2018         {
2019             *msg = "Cannot handle Segment APDU";
2020             return -1;
2021         }
2022         break;
2023     case Z_APDU_triggerResourceControlRequest:
2024         return 0;
2025     default:
2026         *msg = "Bad APDU received";
2027         return -1;
2028     }
2029     if (res)
2030     {
2031         yaz_log(YLOG_DEBUG, "  result immediately available");
2032         retval = process_z_response(assoc, req, res);
2033     }
2034     else
2035     {
2036         yaz_log(YLOG_DEBUG, "  result unavailable");
2037         retval = -1;
2038     }
2039     return retval;
2040 }
2041
2042 /*
2043  * Encode response, and transfer the request structure to the outgoing queue.
2044  */
2045 static int process_gdu_response(association *assoc, request *req, Z_GDU *res)
2046 {
2047     odr_setbuf(assoc->encode, req->response, req->size_response, 1);
2048
2049     if (assoc->print)
2050     {
2051         if (!z_GDU(assoc->print, &res, 0, 0))
2052             yaz_log(YLOG_WARN, "ODR print error: %s",
2053                 odr_errmsg(odr_geterror(assoc->print)));
2054         odr_reset(assoc->print);
2055     }
2056     if (!z_GDU(assoc->encode, &res, 0, 0))
2057     {
2058         yaz_log(YLOG_WARN, "ODR error when encoding PDU: %s [element %s]",
2059                 odr_errmsg(odr_geterror(assoc->decode)),
2060                 odr_getelement(assoc->decode));
2061         return -1;
2062     }
2063     req->response = odr_getbuf(assoc->encode, &req->len_response,
2064         &req->size_response);
2065     odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
2066     odr_reset(assoc->encode);
2067     req->state = REQUEST_IDLE;
2068     request_enq(&assoc->outgoing, req);
2069     /* turn the work over to the ir_session handler */
2070     iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
2071     assoc->cs_put_mask = EVENT_OUTPUT;
2072     /* Is there more work to be done? give that to the input handler too */
2073     for (;;)
2074     {
2075         req = request_head(&assoc->incoming);
2076         if (req && req->state == REQUEST_IDLE)
2077         {
2078             request_deq(&assoc->incoming);
2079             process_gdu_request(assoc, req);
2080         }
2081         else
2082             break;
2083     }
2084     return 0;
2085 }
2086
2087 /*
2088  * Encode response, and transfer the request structure to the outgoing queue.
2089  */
2090 static int process_z_response(association *assoc, request *req, Z_APDU *res)
2091 {
2092     Z_GDU *gres = (Z_GDU *) odr_malloc(assoc->encode, sizeof(*gres));
2093     gres->which = Z_GDU_Z3950;
2094     gres->u.z3950 = res;
2095
2096     return process_gdu_response(assoc, req, gres);
2097 }
2098
2099 static char *get_vhost(Z_OtherInformation *otherInfo)
2100 {
2101     return yaz_oi_get_string_oid(&otherInfo, yaz_oid_userinfo_proxy, 1, 0);
2102 }
2103
2104 /*
2105  * Handle init request.
2106  * At the moment, we don't check the options
2107  * anywhere else in the code - we just try not to do anything that would
2108  * break a naive client. We'll toss 'em into the association block when
2109  * we need them there.
2110  */
2111 static Z_APDU *process_initRequest(association *assoc, request *reqb)
2112 {
2113     Z_InitRequest *req = reqb->apdu_request->u.initRequest;
2114     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
2115     Z_InitResponse *resp = apdu->u.initResponse;
2116     bend_initresult *binitres;
2117     char options[140];
2118     statserv_options_block *cb = 0;  /* by default no control for backend */
2119
2120     if (control_association(assoc, get_vhost(req->otherInfo), 1))
2121         cb = statserv_getcontrol();  /* got control block for backend */
2122
2123     if (cb && assoc->backend)
2124         (*cb->bend_close)(assoc->backend);
2125
2126     yaz_log(log_requestdetail, "Got initRequest");
2127     if (req->implementationId)
2128         yaz_log(log_requestdetail, "Id:        %s",
2129                 req->implementationId);
2130     if (req->implementationName)
2131         yaz_log(log_requestdetail, "Name:      %s",
2132                 req->implementationName);
2133     if (req->implementationVersion)
2134         yaz_log(log_requestdetail, "Version:   %s",
2135                 req->implementationVersion);
2136
2137     assoc_init_reset(assoc);
2138
2139     assoc->init->auth = req->idAuthentication;
2140     assoc->init->referenceId = req->referenceId;
2141
2142     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2143     {
2144         Z_CharSetandLanguageNegotiation *negotiation =
2145             yaz_get_charneg_record (req->otherInfo);
2146         if (negotiation &&
2147             negotiation->which == Z_CharSetandLanguageNegotiation_proposal)
2148             assoc->init->charneg_request = negotiation;
2149     }
2150
2151     /* by default named_result_sets is 0 .. Enable it if client asks for it. */
2152     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
2153         assoc->init->named_result_sets = 1;
2154
2155     assoc->backend = 0;
2156     if (cb)
2157     {
2158         if (req->implementationVersion)
2159             yaz_log(log_requestdetail, "Config:    %s",
2160                     cb->configname);
2161
2162         iochan_settimeout(assoc->client_chan, cb->idle_timeout);
2163
2164         /* we have a backend control block, so call that init function */
2165         if (!(binitres = (*cb->bend_init)(assoc->init)))
2166         {
2167             yaz_log(YLOG_WARN, "Bad response from backend.");
2168             return 0;
2169         }
2170         assoc->backend = binitres->handle;
2171     }
2172     else
2173     {
2174         /* no backend. return error */
2175         binitres = (bend_initresult *)
2176             odr_malloc(assoc->encode, sizeof(*binitres));
2177         binitres->errstring = 0;
2178         binitres->errcode = YAZ_BIB1_PERMANENT_SYSTEM_ERROR;
2179         iochan_settimeout(assoc->client_chan, 10);
2180     }
2181     if ((assoc->init->bend_sort))
2182         yaz_log(YLOG_DEBUG, "Sort handler installed");
2183     if ((assoc->init->bend_search))
2184         yaz_log(YLOG_DEBUG, "Search handler installed");
2185     if ((assoc->init->bend_present))
2186         yaz_log(YLOG_DEBUG, "Present handler installed");
2187     if ((assoc->init->bend_esrequest))
2188         yaz_log(YLOG_DEBUG, "ESRequest handler installed");
2189     if ((assoc->init->bend_delete))
2190         yaz_log(YLOG_DEBUG, "Delete handler installed");
2191     if ((assoc->init->bend_scan))
2192         yaz_log(YLOG_DEBUG, "Scan handler installed");
2193     if ((assoc->init->bend_segment))
2194         yaz_log(YLOG_DEBUG, "Segment handler installed");
2195
2196     resp->referenceId = req->referenceId;
2197     *options = '\0';
2198     /* let's tell the client what we can do */
2199     if (ODR_MASK_GET(req->options, Z_Options_search))
2200     {
2201         ODR_MASK_SET(resp->options, Z_Options_search);
2202         strcat(options, "srch");
2203     }
2204     if (ODR_MASK_GET(req->options, Z_Options_present))
2205     {
2206         ODR_MASK_SET(resp->options, Z_Options_present);
2207         strcat(options, " prst");
2208     }
2209     if (ODR_MASK_GET(req->options, Z_Options_delSet) &&
2210         assoc->init->bend_delete)
2211     {
2212         ODR_MASK_SET(resp->options, Z_Options_delSet);
2213         strcat(options, " del");
2214     }
2215     if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
2216         assoc->init->bend_esrequest)
2217     {
2218         ODR_MASK_SET(resp->options, Z_Options_extendedServices);
2219         strcat(options, " extendedServices");
2220     }
2221     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets)
2222         && assoc->init->named_result_sets)
2223     {
2224         ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
2225         strcat(options, " namedresults");
2226     }
2227     if (ODR_MASK_GET(req->options, Z_Options_scan) && assoc->init->bend_scan)
2228     {
2229         ODR_MASK_SET(resp->options, Z_Options_scan);
2230         strcat(options, " scan");
2231     }
2232     if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
2233     {
2234         ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
2235         strcat(options, " concurrop");
2236     }
2237     if (ODR_MASK_GET(req->options, Z_Options_sort) && assoc->init->bend_sort)
2238     {
2239         ODR_MASK_SET(resp->options, Z_Options_sort);
2240         strcat(options, " sort");
2241     }
2242
2243     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2244     {
2245         Z_OtherInformationUnit *p0;
2246
2247         if (!assoc->init->charneg_response)
2248         {
2249             if (assoc->init->query_charset)
2250             {
2251                 assoc->init->charneg_response = yaz_set_response_charneg(
2252                     assoc->encode, assoc->init->query_charset, 0,
2253                     assoc->init->records_in_same_charset);
2254             }
2255             else
2256             {
2257                 yaz_log(YLOG_WARN, "default query_charset not defined by backend");
2258             }
2259         }
2260         if (assoc->init->charneg_response
2261             && (p0=yaz_oi_update(&resp->otherInfo, assoc->encode, NULL, 0, 0)))
2262         {
2263             p0->which = Z_OtherInfo_externallyDefinedInfo;
2264             p0->information.externallyDefinedInfo =
2265                 assoc->init->charneg_response;
2266             ODR_MASK_SET(resp->options, Z_Options_negotiationModel);
2267             strcat(options, " negotiation");
2268         }
2269     }
2270     if (ODR_MASK_GET(req->options, Z_Options_triggerResourceCtrl))
2271         ODR_MASK_SET(resp->options, Z_Options_triggerResourceCtrl);
2272
2273     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
2274     {
2275         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
2276         assoc->version = 1; /* 1 & 2 are equivalent */
2277     }
2278     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
2279     {
2280         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
2281         assoc->version = 2;
2282     }
2283     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
2284     {
2285         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
2286         assoc->version = 3;
2287     }
2288
2289     yaz_log(log_requestdetail, "Negotiated to v%d: %s", assoc->version, options);
2290
2291     if (*req->maximumRecordSize < assoc->maximumRecordSize)
2292         assoc->maximumRecordSize = odr_int_to_int(*req->maximumRecordSize);
2293
2294     if (*req->preferredMessageSize < assoc->preferredMessageSize)
2295         assoc->preferredMessageSize = odr_int_to_int(*req->preferredMessageSize);
2296
2297     resp->preferredMessageSize =
2298         odr_intdup(assoc->encode, assoc->preferredMessageSize);
2299     resp->maximumRecordSize =
2300         odr_intdup(assoc->encode, assoc->maximumRecordSize);
2301
2302     resp->implementationId = odr_prepend(assoc->encode,
2303                 assoc->init->implementation_id,
2304                 resp->implementationId);
2305
2306     resp->implementationName = odr_prepend(assoc->encode,
2307                 assoc->init->implementation_name,
2308                 odr_prepend(assoc->encode, "GFS", resp->implementationName));
2309
2310     if (binitres->errcode)
2311     {
2312         assoc->state = ASSOC_DEAD;
2313         resp->userInformationField =
2314             init_diagnostics(assoc->encode, binitres->errcode,
2315                              binitres->errstring);
2316         *resp->result = 0;
2317     }
2318     else
2319         assoc->state = ASSOC_UP;
2320
2321     if (log_request)
2322     {
2323         if (!req->idAuthentication)
2324             yaz_log(log_request, "Auth none");
2325         else if (req->idAuthentication->which == Z_IdAuthentication_open)
2326         {
2327             const char *open = req->idAuthentication->u.open;
2328             const char *slash = strchr(open, '/');
2329             int len;
2330             if (slash)
2331                 len = slash - open;
2332             else
2333                 len = strlen(open);
2334                 yaz_log(log_request, "Auth open %.*s", len, open);
2335         }
2336         else if (req->idAuthentication->which == Z_IdAuthentication_idPass)
2337         {
2338             const char *user = req->idAuthentication->u.idPass->userId;
2339             const char *group = req->idAuthentication->u.idPass->groupId;
2340             yaz_log(log_request, "Auth idPass %s %s",
2341                     user ? user : "-", group ? group : "-");
2342         }
2343         else if (req->idAuthentication->which
2344                  == Z_IdAuthentication_anonymous)
2345         {
2346             yaz_log(log_request, "Auth anonymous");
2347         }
2348         else
2349         {
2350             yaz_log(log_request, "Auth other");
2351         }
2352     }
2353     if (log_request)
2354     {
2355         WRBUF wr = wrbuf_alloc();
2356         wrbuf_printf(wr, "Init ");
2357         if (binitres->errcode)
2358             wrbuf_printf(wr, "ERROR %d", binitres->errcode);
2359         else
2360             wrbuf_printf(wr, "OK -");
2361         wrbuf_printf(wr, " ID:%s Name:%s Version:%s",
2362                      (req->implementationId ? req->implementationId :"-"),
2363                      (req->implementationName ?
2364                       req->implementationName : "-"),
2365                      (req->implementationVersion ?
2366                       req->implementationVersion : "-")
2367             );
2368         yaz_log(log_request, "%s", wrbuf_cstr(wr));
2369         wrbuf_destroy(wr);
2370     }
2371     return apdu;
2372 }
2373
2374 /*
2375  * Set the specified `errcode' and `errstring' into a UserInfo-1
2376  * external to be returned to the client in accordance with Z35.90
2377  * Implementor Agreement 5 (Returning diagnostics in an InitResponse):
2378  *      http://lcweb.loc.gov/z3950/agency/agree/initdiag.html
2379  */
2380 static Z_External *init_diagnostics(ODR odr, int error, const char *addinfo)
2381 {
2382     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2383         addinfo ? " -- " : "", addinfo ? addinfo : "");
2384     return zget_init_diagnostics(odr, error, addinfo);
2385 }
2386
2387 /*
2388  * nonsurrogate diagnostic record.
2389  */
2390 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
2391 {
2392     Z_Records *rec = (Z_Records *) odr_malloc(assoc->encode, sizeof(*rec));
2393
2394     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2395             addinfo ? " -- " : "", addinfo ? addinfo : "");
2396
2397     rec->which = Z_Records_NSD;
2398     rec->u.nonSurrogateDiagnostic = zget_DefaultDiagFormat(assoc->encode,
2399                                                            error, addinfo);
2400     return rec;
2401 }
2402
2403 /*
2404  * surrogate diagnostic.
2405  */
2406 static Z_NamePlusRecord *surrogatediagrec(association *assoc,
2407                                           const char *dbname,
2408                                           int error, const char *addinfo)
2409 {
2410     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2411             addinfo ? " -- " : "", addinfo ? addinfo : "");
2412     return zget_surrogateDiagRec(assoc->encode, dbname, error, addinfo);
2413 }
2414
2415 static Z_Records *pack_records(association *a, char *setname, Odr_int start,
2416                                Odr_int *num, Z_RecordComposition *comp,
2417                                Odr_int *next, Odr_int *pres,
2418                                Z_ReferenceId *referenceId,
2419                                Odr_oid *oid, int *errcode)
2420 {
2421     int recno, total_length = 0, dumped_records = 0;
2422     int toget = odr_int_to_int(*num);
2423     Z_Records *records =
2424         (Z_Records *) odr_malloc(a->encode, sizeof(*records));
2425     Z_NamePlusRecordList *reclist =
2426         (Z_NamePlusRecordList *) odr_malloc(a->encode, sizeof(*reclist));
2427
2428     records->which = Z_Records_DBOSD;
2429     records->u.databaseOrSurDiagnostics = reclist;
2430     reclist->num_records = 0;
2431
2432     if (toget < 0)
2433         return diagrec(a, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, 0);
2434     else if (toget == 0)
2435         reclist->records = odr_nullval();
2436     else
2437         reclist->records = (Z_NamePlusRecord **)
2438             odr_malloc(a->encode, sizeof(*reclist->records) * toget);
2439
2440     *pres = Z_PresentStatus_success;
2441     *num = 0;
2442     *next = 0;
2443
2444     yaz_log(log_requestdetail, "Request to pack " ODR_INT_PRINTF "+%d %s", start, toget, setname);
2445     yaz_log(log_requestdetail, "pms=%d, mrs=%d", a->preferredMessageSize,
2446         a->maximumRecordSize);
2447     for (recno = odr_int_to_int(start); reclist->num_records < toget; recno++)
2448     {
2449         bend_fetch_rr freq;
2450         Z_NamePlusRecord *thisrec;
2451         int this_length = 0;
2452         /*
2453          * we get the number of bytes allocated on the stream before any
2454          * allocation done by the backend - this should give us a reasonable
2455          * idea of the total size of the data so far.
2456          */
2457         total_length = odr_total(a->encode) - dumped_records;
2458         freq.errcode = 0;
2459         freq.errstring = 0;
2460         freq.basename = 0;
2461         freq.len = 0;
2462         freq.record = 0;
2463         freq.last_in_set = 0;
2464         freq.setname = setname;
2465         freq.surrogate_flag = 0;
2466         freq.number = recno;
2467         freq.comp = comp;
2468         freq.request_format = oid;
2469         freq.output_format = 0;
2470         freq.stream = a->encode;
2471         freq.print = a->print;
2472         freq.referenceId = referenceId;
2473         freq.schema = 0;
2474
2475         retrieve_fetch(a, &freq);
2476
2477         *next = freq.last_in_set ? 0 : recno + 1;
2478
2479         if (freq.errcode)
2480         {
2481             if (!freq.surrogate_flag) /* non-surrogate diagnostic i.e. global */
2482             {
2483                 char s[20];
2484                 *pres = Z_PresentStatus_failure;
2485                 /* for 'present request out of range',
2486                    set addinfo to record position if not set */
2487                 if (freq.errcode == YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE  &&
2488                                 freq.errstring == 0)
2489                 {
2490                     sprintf(s, "%d", recno);
2491                     freq.errstring = s;
2492                 }
2493                 if (errcode)
2494                     *errcode = freq.errcode;
2495                 return diagrec(a, freq.errcode, freq.errstring);
2496             }
2497             reclist->records[reclist->num_records] =
2498                 surrogatediagrec(a, freq.basename, freq.errcode,
2499                                  freq.errstring);
2500             reclist->num_records++;
2501             continue;
2502         }
2503         if (freq.record == 0)  /* no error and no record ? */
2504         {
2505             *next = 0;   /* signal end-of-set and stop */
2506             break;
2507         }
2508         if (freq.len >= 0)
2509             this_length = freq.len;
2510         else
2511             this_length = odr_total(a->encode) - total_length - dumped_records;
2512         yaz_log(YLOG_DEBUG, "  fetched record, len=%d, total=%d dumped=%d",
2513             this_length, total_length, dumped_records);
2514         if (a->preferredMessageSize > 0 &&
2515                 this_length + total_length > a->preferredMessageSize)
2516         {
2517             /* record is small enough, really */
2518             if (this_length <= a->preferredMessageSize && recno > start)
2519             {
2520                 yaz_log(log_requestdetail, "  Dropped last normal-sized record");
2521                 *pres = Z_PresentStatus_partial_2;
2522                 if (*next > 0)
2523                     (*next)--;
2524                 break;
2525             }
2526             /* record can only be fetched by itself */
2527             if (this_length < a->maximumRecordSize)
2528             {
2529                 yaz_log(log_requestdetail, "  Record > prefmsgsz");
2530                 if (toget > 1)
2531                 {
2532                     yaz_log(YLOG_DEBUG, "  Dropped it");
2533                     reclist->records[reclist->num_records] =
2534                          surrogatediagrec(
2535                              a, freq.basename,
2536                              YAZ_BIB1_RECORD_EXCEEDS_PREFERRED_MESSAGE_SIZE, 0);
2537                     reclist->num_records++;
2538                     dumped_records += this_length;
2539                     continue;
2540                 }
2541             }
2542             else /* too big entirely */
2543             {
2544                 yaz_log(log_requestdetail, "Record > maxrcdsz "
2545                         "this=%d max=%d",
2546                         this_length, a->maximumRecordSize);
2547                 reclist->records[reclist->num_records] =
2548                     surrogatediagrec(
2549                         a, freq.basename,
2550                         YAZ_BIB1_RECORD_EXCEEDS_MAXIMUM_RECORD_SIZE, 0);
2551                 reclist->num_records++;
2552                 dumped_records += this_length;
2553                 continue;
2554             }
2555         }
2556
2557         if (!(thisrec = (Z_NamePlusRecord *)
2558               odr_malloc(a->encode, sizeof(*thisrec))))
2559             return 0;
2560         thisrec->databaseName = odr_strdup_null(a->encode, freq.basename);
2561         thisrec->which = Z_NamePlusRecord_databaseRecord;
2562
2563         if (!freq.output_format)
2564         {
2565             yaz_log(YLOG_WARN, "bend_fetch output_format not set");
2566             return 0;
2567         }
2568         thisrec->u.databaseRecord = z_ext_record_oid(
2569             a->encode, freq.output_format, freq.record, freq.len);
2570         if (!thisrec->u.databaseRecord)
2571             return 0;
2572         reclist->records[reclist->num_records] = thisrec;
2573         reclist->num_records++;
2574     }
2575     *num = reclist->num_records;
2576     return records;
2577 }
2578
2579 static Z_APDU *process_searchRequest(association *assoc, request *reqb)
2580 {
2581     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2582     bend_search_rr *bsrr =
2583         (bend_search_rr *)nmem_malloc(reqb->request_mem, sizeof(*bsrr));
2584
2585     yaz_log(log_requestdetail, "Got SearchRequest.");
2586     bsrr->association = assoc;
2587     bsrr->referenceId = req->referenceId;
2588     bsrr->srw_sortKeys = 0;
2589     bsrr->srw_setname = 0;
2590     bsrr->srw_setnameIdleTime = 0;
2591     bsrr->estimated_hit_count = 0;
2592     bsrr->partial_resultset = 0;
2593     bsrr->extra_args = 0;
2594     bsrr->extra_response_data = 0;
2595
2596     yaz_log (log_requestdetail, "ResultSet '%s'", req->resultSetName);
2597     if (req->databaseNames)
2598     {
2599         int i;
2600         for (i = 0; i < req->num_databaseNames; i++)
2601             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
2602     }
2603
2604     yaz_log_zquery_level(log_requestdetail,req->query);
2605
2606     if (assoc->init->bend_search)
2607     {
2608         bsrr->setname = req->resultSetName;
2609         bsrr->replace_set = *req->replaceIndicator;
2610         bsrr->num_bases = req->num_databaseNames;
2611         bsrr->basenames = req->databaseNames;
2612         bsrr->query = req->query;
2613         bsrr->stream = assoc->encode;
2614         nmem_transfer(odr_getmem(bsrr->stream), reqb->request_mem);
2615         bsrr->decode = assoc->decode;
2616         bsrr->print = assoc->print;
2617         bsrr->hits = 0;
2618         bsrr->errcode = 0;
2619         bsrr->errstring = NULL;
2620         bsrr->search_info = NULL;
2621         bsrr->search_input = req->otherInfo;
2622
2623         if (assoc->server && assoc->server->cql_transform
2624             && req->query->which == Z_Query_type_104
2625             && req->query->u.type_104->which == Z_External_CQL)
2626         {
2627             /* have a CQL query and a CQL to PQF transform .. */
2628             int srw_errcode =
2629                 cql2pqf(bsrr->stream, req->query->u.type_104->u.cql,
2630                         assoc->server->cql_transform, bsrr->query);
2631             if (srw_errcode)
2632                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2633         }
2634
2635         if (assoc->server && assoc->server->ccl_transform
2636             && req->query->which == Z_Query_type_2) /*CCL*/
2637         {
2638             /* have a CCL query and a CCL to PQF transform .. */
2639             int srw_errcode =
2640                 ccl2pqf(bsrr->stream, req->query->u.type_2,
2641                         assoc->server->ccl_transform, bsrr);
2642             if (srw_errcode)
2643                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2644         }
2645
2646         if (!bsrr->errcode)
2647             (assoc->init->bend_search)(assoc->backend, bsrr);
2648     }
2649     else
2650     {
2651         /* FIXME - make a diagnostic for it */
2652         yaz_log(YLOG_WARN,"Search not supported ?!?!");
2653     }
2654     return response_searchRequest(assoc, reqb, bsrr);
2655 }
2656
2657 /*
2658  * Prepare a searchresponse based on the backend results. We probably want
2659  * to look at making the fetching of records nonblocking as well, but
2660  * so far, we'll keep things simple.
2661  * If bsrt is null, that means we're called in response to a communications
2662  * event, and we'll have to get the response for ourselves.
2663  */
2664 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
2665                                       bend_search_rr *bsrt)
2666 {
2667     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2668     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2669     Z_SearchResponse *resp = (Z_SearchResponse *)
2670         odr_malloc(assoc->encode, sizeof(*resp));
2671     Odr_int *nulint = odr_intdup(assoc->encode, 0);
2672     Odr_int *next = odr_intdup(assoc->encode, 0);
2673     Odr_int *none = odr_intdup(assoc->encode, Z_SearchResponse_none);
2674     Odr_int returnedrecs = 0;
2675
2676     apdu->which = Z_APDU_searchResponse;
2677     apdu->u.searchResponse = resp;
2678     resp->referenceId = req->referenceId;
2679     resp->additionalSearchInfo = 0;
2680     resp->otherInfo = 0;
2681     if (!bsrt)
2682     {
2683         yaz_log(YLOG_FATAL, "Bad result from backend");
2684         return 0;
2685     }
2686     else if (bsrt->errcode)
2687     {
2688         resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
2689         resp->resultCount = nulint;
2690         resp->numberOfRecordsReturned = nulint;
2691         resp->nextResultSetPosition = nulint;
2692         resp->searchStatus = odr_booldup(assoc->encode, 0);
2693         resp->resultSetStatus = none;
2694         resp->presentStatus = 0;
2695     }
2696     else
2697     {
2698         bool_t *sr = odr_booldup(assoc->encode, 1);
2699         Odr_int *toget = odr_intdup(assoc->encode, 0);
2700         Z_RecordComposition comp, *compp = 0;
2701
2702         yaz_log(log_requestdetail, "resultCount: " ODR_INT_PRINTF, bsrt->hits);
2703
2704         resp->records = 0;
2705         resp->resultCount = &bsrt->hits;
2706
2707         comp.which = Z_RecordComp_simple;
2708         /* how many records does the user agent want, then? */
2709         if (bsrt->hits < 0)
2710             *toget = 0;
2711         else if (bsrt->hits <= *req->smallSetUpperBound)
2712         {
2713             *toget = bsrt->hits;
2714             if ((comp.u.simple = req->smallSetElementSetNames))
2715                 compp = &comp;
2716         }
2717         else if (bsrt->hits < *req->largeSetLowerBound)
2718         {
2719             *toget = *req->mediumSetPresentNumber;
2720             if (*toget > bsrt->hits)
2721                 *toget = bsrt->hits;
2722             if ((comp.u.simple = req->mediumSetElementSetNames))
2723                 compp = &comp;
2724         }
2725         else
2726             *toget = 0;
2727
2728         if (*toget && !resp->records)
2729         {
2730             Odr_int *presst = odr_intdup(assoc->encode, 0);
2731             /* Call bend_present if defined */
2732             if (assoc->init->bend_present)
2733             {
2734                 bend_present_rr *bprr = (bend_present_rr *)
2735                     nmem_malloc(reqb->request_mem, sizeof(*bprr));
2736                 bprr->setname = req->resultSetName;
2737                 bprr->start = 1;
2738                 bprr->number = odr_int_to_int(*toget);
2739                 bprr->format = req->preferredRecordSyntax;
2740                 bprr->comp = compp;
2741                 bprr->referenceId = req->referenceId;
2742                 bprr->stream = assoc->encode;
2743                 bprr->print = assoc->print;
2744                 bprr->association = assoc;
2745                 bprr->errcode = 0;
2746                 bprr->errstring = NULL;
2747                 (*assoc->init->bend_present)(assoc->backend, bprr);
2748
2749                 if (bprr->errcode)
2750                 {
2751                     resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2752                     *resp->presentStatus = Z_PresentStatus_failure;
2753                 }
2754             }
2755
2756             if (!resp->records)
2757                 resp->records = pack_records(
2758                     assoc, req->resultSetName, 1,
2759                     toget, compp, next, presst, req->referenceId,
2760                     req->preferredRecordSyntax, NULL);
2761             if (!resp->records)
2762                 return 0;
2763             resp->numberOfRecordsReturned = toget;
2764             returnedrecs = *toget;
2765             resp->presentStatus = presst;
2766         }
2767         else
2768         {
2769             if (*resp->resultCount)
2770                 *next = 1;
2771             resp->numberOfRecordsReturned = nulint;
2772             resp->presentStatus = 0;
2773         }
2774         resp->nextResultSetPosition = next;
2775         resp->searchStatus = sr;
2776         resp->resultSetStatus = 0;
2777         if (bsrt->estimated_hit_count)
2778         {
2779             resp->resultSetStatus = odr_intdup(assoc->encode,
2780                                                Z_SearchResponse_estimate);
2781         }
2782         else if (bsrt->partial_resultset)
2783         {
2784             resp->resultSetStatus = odr_intdup(assoc->encode,
2785                                                Z_SearchResponse_subset);
2786         }
2787     }
2788     resp->additionalSearchInfo = bsrt->search_info;
2789
2790     if (log_request)
2791     {
2792         int i;
2793         WRBUF wr = wrbuf_alloc();
2794
2795         for (i = 0 ; i < req->num_databaseNames; i++)
2796         {
2797             if (i)
2798                 wrbuf_printf(wr, "+");
2799             wrbuf_puts(wr, req->databaseNames[i]);
2800         }
2801         wrbuf_printf(wr, " ");
2802
2803         if (bsrt->errcode)
2804             wrbuf_printf(wr, "ERROR %d", bsrt->errcode);
2805         else
2806             wrbuf_printf(wr, "OK " ODR_INT_PRINTF, bsrt->hits);
2807         wrbuf_printf(wr, " %s 1+" ODR_INT_PRINTF " ",
2808                      req->resultSetName, returnedrecs);
2809         yaz_query_to_wrbuf(wr, req->query);
2810
2811         yaz_log(log_request, "Search %s", wrbuf_cstr(wr));
2812         wrbuf_destroy(wr);
2813     }
2814     return apdu;
2815 }
2816
2817 /*
2818  * Maybe we got a little over-friendly when we designed bend_fetch to
2819  * get only one record at a time. Some backends can optimise multiple-record
2820  * fetches, and at any rate, there is some overhead involved in
2821  * all that selecting and hopping around. Problem is, of course, that the
2822  * frontend can't know ahead of time how many records it'll need to
2823  * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
2824  * is downright lousy as a bulk data transfer protocol.
2825  *
2826  * To start with, we'll do the fetching of records from the backend
2827  * in one operation: To save some trips in and out of the event-handler,
2828  * and to simplify the interface to pack_records. At any rate, asynch
2829  * operation is more fun in operations that have an unpredictable execution
2830  * speed - which is normally more true for search than for present.
2831  */
2832 static Z_APDU *process_presentRequest(association *assoc, request *reqb)
2833 {
2834     Z_PresentRequest *req = reqb->apdu_request->u.presentRequest;
2835     Z_APDU *apdu;
2836     Z_PresentResponse *resp;
2837     Odr_int *next;
2838     Odr_int *num;
2839     int errcode = 0;
2840     const char *errstring = 0;
2841
2842     yaz_log(log_requestdetail, "Got PresentRequest.");
2843
2844     resp = (Z_PresentResponse *)odr_malloc(assoc->encode, sizeof(*resp));
2845     resp->records = 0;
2846     resp->presentStatus = odr_intdup(assoc->encode, 0);
2847     if (assoc->init->bend_present)
2848     {
2849         bend_present_rr *bprr = (bend_present_rr *)
2850             nmem_malloc(reqb->request_mem, sizeof(*bprr));
2851         bprr->setname = req->resultSetId;
2852         bprr->start = odr_int_to_int(*req->resultSetStartPoint);
2853         bprr->number = odr_int_to_int(*req->numberOfRecordsRequested);
2854         bprr->format = req->preferredRecordSyntax;
2855         bprr->comp = req->recordComposition;
2856         bprr->referenceId = req->referenceId;
2857         bprr->stream = assoc->encode;
2858         bprr->print = assoc->print;
2859         bprr->association = assoc;
2860         bprr->errcode = 0;
2861         bprr->errstring = NULL;
2862         (*assoc->init->bend_present)(assoc->backend, bprr);
2863
2864         if (bprr->errcode)
2865         {
2866             resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2867             *resp->presentStatus = Z_PresentStatus_failure;
2868             errcode = bprr->errcode;
2869             errstring = bprr->errstring;
2870         }
2871     }
2872     apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2873     next = odr_intdup(assoc->encode, 0);
2874     num = odr_intdup(assoc->encode, 0);
2875
2876     apdu->which = Z_APDU_presentResponse;
2877     apdu->u.presentResponse = resp;
2878     resp->referenceId = req->referenceId;
2879     resp->otherInfo = 0;
2880
2881     if (!resp->records)
2882     {
2883         *num = *req->numberOfRecordsRequested;
2884         resp->records =
2885             pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
2886                          num, req->recordComposition, next,
2887                          resp->presentStatus,
2888                          req->referenceId, req->preferredRecordSyntax,
2889                          &errcode);
2890     }
2891     if (log_request)
2892     {
2893         WRBUF wr = wrbuf_alloc();
2894         wrbuf_printf(wr, "Present ");
2895
2896         if (*resp->presentStatus == Z_PresentStatus_failure)
2897             wrbuf_printf(wr, "ERROR %d ", errcode);
2898         else if (*resp->presentStatus == Z_PresentStatus_success)
2899             wrbuf_printf(wr, "OK -  ");
2900         else
2901             wrbuf_printf(wr, "Partial " ODR_INT_PRINTF " - ",
2902                          *resp->presentStatus);
2903
2904         wrbuf_printf(wr, " %s " ODR_INT_PRINTF "+" ODR_INT_PRINTF " ",
2905                 req->resultSetId, *req->resultSetStartPoint,
2906                 *req->numberOfRecordsRequested);
2907         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
2908         wrbuf_destroy(wr);
2909     }
2910     if (!resp->records)
2911         return 0;
2912     resp->numberOfRecordsReturned = num;
2913     resp->nextResultSetPosition = next;
2914
2915     return apdu;
2916 }
2917
2918 /*
2919  * Scan was implemented rather in a hurry, and with support for only the basic
2920  * elements of the service in the backend API. Suggestions are welcome.
2921  */
2922 static Z_APDU *process_scanRequest(association *assoc, request *reqb)
2923 {
2924     Z_ScanRequest *req = reqb->apdu_request->u.scanRequest;
2925     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2926     Z_ScanResponse *res = (Z_ScanResponse *)
2927         odr_malloc(assoc->encode, sizeof(*res));
2928     Odr_int *scanStatus = odr_intdup(assoc->encode, Z_Scan_failure);
2929     Odr_int *numberOfEntriesReturned = odr_intdup(assoc->encode, 0);
2930     Z_ListEntries *ents = (Z_ListEntries *)
2931         odr_malloc(assoc->encode, sizeof(*ents));
2932     Z_DiagRecs *diagrecs_p = NULL;
2933     bend_scan_rr *bsrr = (bend_scan_rr *)
2934         odr_malloc(assoc->encode, sizeof(*bsrr));
2935     struct scan_entry *save_entries;
2936     int step_size = 0;
2937
2938     yaz_log(log_requestdetail, "Got ScanRequest");
2939
2940     apdu->which = Z_APDU_scanResponse;
2941     apdu->u.scanResponse = res;
2942     res->referenceId = req->referenceId;
2943
2944     /* if step is absent, set it to 0 */
2945     if (req->stepSize)
2946         step_size = odr_int_to_int(*req->stepSize);
2947
2948     res->scanStatus = scanStatus;
2949     res->numberOfEntriesReturned = numberOfEntriesReturned;
2950     res->positionOfTerm = 0;
2951     res->entries = ents;
2952     ents->num_entries = 0;
2953     ents->entries = NULL;
2954     ents->num_nonsurrogateDiagnostics = 0;
2955     ents->nonsurrogateDiagnostics = NULL;
2956     res->attributeSet = 0;
2957     res->otherInfo = 0;
2958
2959     if (req->databaseNames)
2960     {
2961         int i;
2962         for (i = 0; i < req->num_databaseNames; i++)
2963             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
2964     }
2965     bsrr->scanClause = 0;
2966     bsrr->errcode = 0;
2967     bsrr->errstring = 0;
2968     bsrr->num_bases = req->num_databaseNames;
2969     bsrr->basenames = req->databaseNames;
2970     bsrr->num_entries = odr_int_to_int(*req->numberOfTermsRequested);
2971     bsrr->term = req->termListAndStartPoint;
2972     bsrr->referenceId = req->referenceId;
2973     bsrr->stream = assoc->encode;
2974     bsrr->print = assoc->print;
2975     bsrr->step_size = &step_size;
2976     bsrr->setname = yaz_oi_get_string_oid(&req->otherInfo,
2977                                           yaz_oid_userinfo_scan_set, 1, 0);
2978     bsrr->entries = 0;
2979     /* For YAZ 2.0 and earlier it was the backend handler that
2980        initialized entries (member display_term did not exist)
2981        YAZ 2.0 and later sets 'entries'  and initialize all members
2982        including 'display_term'. If YAZ 2.0 or later sees that
2983        entries was modified - we assume that it is an old handler and
2984        that 'display_term' is _not_ set.
2985     */
2986     if (bsrr->num_entries > 0)
2987     {
2988         int i;
2989         bsrr->entries = (struct scan_entry *)
2990             odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
2991                        bsrr->num_entries);
2992         for (i = 0; i<bsrr->num_entries; i++)
2993         {
2994             bsrr->entries[i].term = 0;
2995             bsrr->entries[i].occurrences = 0;
2996             bsrr->entries[i].errcode = 0;
2997             bsrr->entries[i].errstring = 0;
2998             bsrr->entries[i].display_term = 0;
2999         }
3000     }
3001     save_entries = bsrr->entries;  /* save it so we can compare later */
3002
3003     bsrr->attributeset = req->attributeSet;
3004     log_scan_term_level(log_requestdetail, req->termListAndStartPoint,
3005                         bsrr->attributeset);
3006     bsrr->term_position = req->preferredPositionInResponse ?
3007         odr_int_to_int(*req->preferredPositionInResponse) : 1;
3008
3009     ((int (*)(void *, bend_scan_rr *))
3010      (*assoc->init->bend_scan))(assoc->backend, bsrr);
3011
3012     if (bsrr->errcode)
3013         diagrecs_p = zget_DiagRecs(assoc->encode,
3014                                    bsrr->errcode, bsrr->errstring);
3015     else
3016     {
3017         int i;
3018         Z_Entry **tab = (Z_Entry **)
3019             odr_malloc(assoc->encode, sizeof(*tab) * bsrr->num_entries);
3020
3021         if (bsrr->status == BEND_SCAN_PARTIAL)
3022             *scanStatus = Z_Scan_partial_5;
3023         else
3024             *scanStatus = Z_Scan_success;
3025         res->stepSize = odr_intdup(assoc->encode, step_size);
3026         ents->entries = tab;
3027         ents->num_entries = bsrr->num_entries;
3028         res->numberOfEntriesReturned = odr_intdup(assoc->encode,
3029                                                    ents->num_entries);
3030         res->positionOfTerm = odr_intdup(assoc->encode, bsrr->term_position);
3031         for (i = 0; i < bsrr->num_entries; i++)
3032         {
3033             Z_Entry *e;
3034             Z_TermInfo *t;
3035             Odr_oct *o;
3036
3037             tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
3038             if (bsrr->entries[i].occurrences >= 0)
3039             {
3040                 e->which = Z_Entry_termInfo;
3041                 e->u.termInfo = t = (Z_TermInfo *)
3042                     odr_malloc(assoc->encode, sizeof(*t));
3043                 t->suggestedAttributes = 0;
3044                 t->displayTerm = 0;
3045                 if (save_entries == bsrr->entries &&
3046                     bsrr->entries[i].display_term)
3047                 {
3048                     /* the entries was _not_ set by the handler. So it's
3049                        safe to test for new member display_term. It is
3050                        NULL'ed by us.
3051                     */
3052                     t->displayTerm = odr_strdup(assoc->encode,
3053                                                 bsrr->entries[i].display_term);
3054                 }
3055                 t->alternativeTerm = 0;
3056                 t->byAttributes = 0;
3057                 t->otherTermInfo = 0;
3058                 t->globalOccurrences = &bsrr->entries[i].occurrences;
3059                 t->term = (Z_Term *)
3060                     odr_malloc(assoc->encode, sizeof(*t->term));
3061                 t->term->which = Z_Term_general;
3062                 t->term->u.general = o =
3063                     (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
3064                 o->buf = (unsigned char *)
3065                     odr_malloc(assoc->encode, o->len = o->size =
3066                                strlen(bsrr->entries[i].term));
3067                 memcpy(o->buf, bsrr->entries[i].term, o->len);
3068                 yaz_log(YLOG_DEBUG, "  term #%d: '%s' (" ODR_INT_PRINTF ")", i,
3069                          bsrr->entries[i].term, bsrr->entries[i].occurrences);
3070             }
3071             else
3072             {
3073                 Z_DiagRecs *drecs = zget_DiagRecs(assoc->encode,
3074                                                   bsrr->entries[i].errcode,
3075                                                   bsrr->entries[i].errstring);
3076                 assert(drecs->num_diagRecs == 1);
3077                 e->which = Z_Entry_surrogateDiagnostic;
3078                 assert(drecs->diagRecs[0]);
3079                 e->u.surrogateDiagnostic = drecs->diagRecs[0];
3080             }
3081         }
3082     }
3083     if (diagrecs_p)
3084     {
3085         ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
3086         ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
3087     }
3088     if (log_request)
3089     {
3090         int i;
3091         WRBUF wr = wrbuf_alloc();
3092         wrbuf_printf(wr, "Scan ");
3093         for (i = 0 ; i < req->num_databaseNames; i++)
3094         {
3095             if (i)
3096                 wrbuf_printf(wr, "+");
3097             wrbuf_puts(wr, req->databaseNames[i]);
3098         }
3099
3100         wrbuf_printf(wr, " ");
3101
3102         if (bsrr->errcode)
3103             wr_diag(wr, bsrr->errcode, bsrr->errstring);
3104         else
3105             wrbuf_printf(wr, "OK");
3106
3107         wrbuf_printf(wr, " " ODR_INT_PRINTF " - " ODR_INT_PRINTF "+"
3108                      ODR_INT_PRINTF "+" ODR_INT_PRINTF,
3109                      res->numberOfEntriesReturned ?
3110                      *res->numberOfEntriesReturned : 0,
3111                      (req->preferredPositionInResponse ?
3112                       *req->preferredPositionInResponse : 1),
3113                      *req->numberOfTermsRequested,
3114                      (res->stepSize ? *res->stepSize : 1));
3115
3116         if (bsrr->setname)
3117             wrbuf_printf(wr, "+%s", bsrr->setname);
3118
3119         wrbuf_printf(wr, " ");
3120         yaz_scan_to_wrbuf(wr, req->termListAndStartPoint,
3121                           bsrr->attributeset);
3122         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3123         wrbuf_destroy(wr);
3124     }
3125     return apdu;
3126 }
3127
3128 static Z_APDU *process_sortRequest(association *assoc, request *reqb)
3129 {
3130     int i;
3131     Z_SortRequest *req = reqb->apdu_request->u.sortRequest;
3132     Z_SortResponse *res = (Z_SortResponse *)
3133         odr_malloc(assoc->encode, sizeof(*res));
3134     bend_sort_rr *bsrr = (bend_sort_rr *)
3135         odr_malloc(assoc->encode, sizeof(*bsrr));
3136
3137     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
3138
3139     yaz_log(log_requestdetail, "Got SortRequest.");
3140
3141     bsrr->num_input_setnames = req->num_inputResultSetNames;
3142     for (i=0;i<req->num_inputResultSetNames;i++)
3143         yaz_log(log_requestdetail, "Input resultset: '%s'",
3144                 req->inputResultSetNames[i]);
3145     bsrr->input_setnames = req->inputResultSetNames;
3146     bsrr->referenceId = req->referenceId;
3147     bsrr->output_setname = req->sortedResultSetName;
3148     yaz_log(log_requestdetail, "Output resultset: '%s'",
3149                 req->sortedResultSetName);
3150     bsrr->sort_sequence = req->sortSequence;
3151        /*FIXME - dump those sequences too */
3152     bsrr->stream = assoc->encode;
3153     bsrr->print = assoc->print;
3154
3155     bsrr->sort_status = Z_SortResponse_failure;
3156     bsrr->errcode = 0;
3157     bsrr->errstring = 0;
3158
3159     (*assoc->init->bend_sort)(assoc->backend, bsrr);
3160
3161     res->referenceId = bsrr->referenceId;
3162     res->sortStatus = odr_intdup(assoc->encode, bsrr->sort_status);
3163     res->resultSetStatus = 0;
3164     if (bsrr->errcode)
3165     {
3166         Z_DiagRecs *dr = zget_DiagRecs(assoc->encode,
3167                                        bsrr->errcode, bsrr->errstring);
3168         res->diagnostics = dr->diagRecs;
3169         res->num_diagnostics = dr->num_diagRecs;
3170     }
3171     else
3172     {
3173         res->num_diagnostics = 0;
3174         res->diagnostics = 0;
3175     }
3176     res->resultCount = 0;
3177     res->otherInfo = 0;
3178
3179     apdu->which = Z_APDU_sortResponse;
3180     apdu->u.sortResponse = res;
3181     if (log_request)
3182     {
3183         WRBUF wr = wrbuf_alloc();
3184         wrbuf_printf(wr, "Sort ");
3185         if (bsrr->errcode)
3186             wrbuf_printf(wr, " ERROR %d", bsrr->errcode);
3187         else
3188             wrbuf_printf(wr,  "OK -");
3189         wrbuf_printf(wr, " (");
3190         for (i = 0; i<req->num_inputResultSetNames; i++)
3191         {
3192             if (i)
3193                 wrbuf_printf(wr, "+");
3194             wrbuf_puts(wr, req->inputResultSetNames[i]);
3195         }
3196         wrbuf_printf(wr, ")->%s ",req->sortedResultSetName);
3197
3198         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3199         wrbuf_destroy(wr);
3200     }
3201     return apdu;
3202 }
3203
3204 static Z_APDU *process_deleteRequest(association *assoc, request *reqb)
3205 {
3206     int i;
3207     Z_DeleteResultSetRequest *req =
3208         reqb->apdu_request->u.deleteResultSetRequest;
3209     Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
3210         odr_malloc(assoc->encode, sizeof(*res));
3211     bend_delete_rr *bdrr = (bend_delete_rr *)
3212         odr_malloc(assoc->encode, sizeof(*bdrr));
3213     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
3214
3215     yaz_log(log_requestdetail, "Got DeleteRequest.");
3216
3217     bdrr->num_setnames = req->num_resultSetList;
3218     bdrr->setnames = req->resultSetList;
3219     for (i = 0; i<req->num_resultSetList; i++)
3220         yaz_log(log_requestdetail, "resultset: '%s'",
3221                 req->resultSetList[i]);
3222     bdrr->stream = assoc->encode;
3223     bdrr->print = assoc->print;
3224     bdrr->function = odr_int_to_int(*req->deleteFunction);
3225     bdrr->referenceId = req->referenceId;
3226     bdrr->statuses = 0;
3227     if (bdrr->num_setnames > 0)
3228     {
3229         bdrr->statuses = (int*)
3230             odr_malloc(assoc->encode, sizeof(*bdrr->statuses) *
3231                        bdrr->num_setnames);
3232         for (i = 0; i < bdrr->num_setnames; i++)
3233             bdrr->statuses[i] = 0;
3234     }
3235     (*assoc->init->bend_delete)(assoc->backend, bdrr);
3236
3237     res->referenceId = req->referenceId;
3238
3239     res->deleteOperationStatus = odr_intdup(assoc->encode,bdrr->delete_status);
3240
3241     res->deleteListStatuses = 0;
3242     if (bdrr->num_setnames > 0)
3243     {
3244         int i;
3245         res->deleteListStatuses = (Z_ListStatuses *)
3246             odr_malloc(assoc->encode, sizeof(*res->deleteListStatuses));
3247         res->deleteListStatuses->num = bdrr->num_setnames;
3248         res->deleteListStatuses->elements =
3249             (Z_ListStatus **)
3250             odr_malloc(assoc->encode,
3251                         sizeof(*res->deleteListStatuses->elements) *
3252                         bdrr->num_setnames);
3253         for (i = 0; i<bdrr->num_setnames; i++)
3254         {
3255             res->deleteListStatuses->elements[i] =
3256                 (Z_ListStatus *)
3257                 odr_malloc(assoc->encode,
3258                             sizeof(**res->deleteListStatuses->elements));
3259             res->deleteListStatuses->elements[i]->status =
3260                 odr_intdup(assoc->encode, bdrr->statuses[i]);
3261             res->deleteListStatuses->elements[i]->id =
3262                 odr_strdup(assoc->encode, bdrr->setnames[i]);
3263         }
3264     }
3265     res->numberNotDeleted = 0;
3266     res->bulkStatuses = 0;
3267     res->deleteMessage = 0;
3268     res->otherInfo = 0;
3269
3270     apdu->which = Z_APDU_deleteResultSetResponse;
3271     apdu->u.deleteResultSetResponse = res;
3272     if (log_request)
3273     {
3274         WRBUF wr = wrbuf_alloc();
3275         wrbuf_printf(wr, "Delete ");
3276         if (bdrr->delete_status)
3277             wrbuf_printf(wr, "ERROR %d", bdrr->delete_status);
3278         else
3279             wrbuf_printf(wr, "OK -");
3280         for (i = 0; i<req->num_resultSetList; i++)
3281             wrbuf_printf(wr, " %s ", req->resultSetList[i]);
3282         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3283         wrbuf_destroy(wr);
3284     }
3285     return apdu;
3286 }
3287
3288 static void process_close(association *assoc, request *reqb)
3289 {
3290     Z_Close *req = reqb->apdu_request->u.close;
3291     static char *reasons[] =
3292     {
3293         "finished",
3294         "shutdown",
3295         "systemProblem",
3296         "costLimit",
3297         "resources",
3298         "securityViolation",
3299         "protocolError",
3300         "lackOfActivity",
3301         "peerAbort",
3302         "unspecified"
3303     };
3304
3305     yaz_log(log_requestdetail, "Got Close, reason %s, message %s",
3306         reasons[*req->closeReason], req->diagnosticInformation ?
3307         req->diagnosticInformation : "NULL");
3308     if (assoc->version < 3) /* to make do_force respond with close */
3309         assoc->version = 3;
3310     do_close_req(assoc, Z_Close_finished,
3311                  "Association terminated by client", reqb);
3312     yaz_log(log_request,"Close OK");
3313 }
3314
3315 static Z_APDU *process_segmentRequest(association *assoc, request *reqb)
3316 {
3317     bend_segment_rr req;
3318
3319     req.segment = reqb->apdu_request->u.segmentRequest;
3320     req.stream = assoc->encode;
3321     req.decode = assoc->decode;
3322     req.print = assoc->print;
3323     req.association = assoc;
3324
3325     (*assoc->init->bend_segment)(assoc->backend, &req);
3326
3327     return 0;
3328 }
3329
3330 static Z_APDU *process_ESRequest(association *assoc, request *reqb)
3331 {
3332     bend_esrequest_rr esrequest;
3333     const char *ext_name = "unknown";
3334
3335     Z_ExtendedServicesRequest *req =
3336         reqb->apdu_request->u.extendedServicesRequest;
3337     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
3338
3339     Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
3340
3341     esrequest.esr = reqb->apdu_request->u.extendedServicesRequest;
3342     esrequest.stream = assoc->encode;
3343     esrequest.decode = assoc->decode;
3344     esrequest.print = assoc->print;
3345     esrequest.errcode = 0;
3346     esrequest.errstring = NULL;
3347     esrequest.association = assoc;
3348     esrequest.taskPackage = 0;
3349     esrequest.referenceId = req->referenceId;
3350
3351     if (esrequest.esr && esrequest.esr->taskSpecificParameters)
3352     {
3353         switch(esrequest.esr->taskSpecificParameters->which)
3354         {
3355         case Z_External_itemOrder:
3356             ext_name = "ItemOrder"; break;
3357         case Z_External_update:
3358             ext_name = "Update"; break;
3359         case Z_External_update0:
3360             ext_name = "Update0"; break;
3361         case Z_External_ESAdmin:
3362             ext_name = "Admin"; break;
3363
3364         }
3365     }
3366
3367     (*assoc->init->bend_esrequest)(assoc->backend, &esrequest);
3368
3369     resp->referenceId = req->referenceId;
3370
3371     if (esrequest.errcode == -1)
3372     {
3373         /* Backend service indicates request will be processed */
3374         yaz_log(log_request, "Extended Service: %s (accepted)", ext_name);
3375         *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
3376     }
3377     else if (esrequest.errcode == 0)
3378     {
3379         /* Backend service indicates request will be processed */
3380         yaz_log(log_request, "Extended Service: %s (done)", ext_name);
3381         *resp->operationStatus = Z_ExtendedServicesResponse_done;
3382     }
3383     else
3384     {
3385         Z_DiagRecs *diagRecs =
3386             zget_DiagRecs(assoc->encode, esrequest.errcode,
3387                           esrequest.errstring);
3388         /* Backend indicates error, request will not be processed */
3389         yaz_log(log_request, "Extended Service: %s (failed)", ext_name);
3390         *resp->operationStatus = Z_ExtendedServicesResponse_failure;
3391         resp->num_diagnostics = diagRecs->num_diagRecs;
3392         resp->diagnostics = diagRecs->diagRecs;
3393         if (log_request)
3394         {
3395             WRBUF wr = wrbuf_alloc();
3396             wrbuf_diags(wr, resp->num_diagnostics, resp->diagnostics);
3397             yaz_log(log_request, "EsRequest %s", wrbuf_cstr(wr) );
3398             wrbuf_destroy(wr);
3399         }
3400
3401     }
3402     /* Do something with the members of bend_extendedservice */
3403     if (esrequest.taskPackage)
3404     {
3405         resp->taskPackage = z_ext_record_oid(
3406             assoc->encode, yaz_oid_recsyn_extended,
3407             (const char *)  esrequest.taskPackage, -1);
3408     }
3409     yaz_log(YLOG_DEBUG,"Send the result apdu");
3410     return apdu;
3411 }
3412
3413 int bend_assoc_is_alive(bend_association assoc)
3414 {
3415     if (assoc->state == ASSOC_DEAD)
3416         return 0; /* already marked as dead. Don't check I/O chan anymore */
3417
3418     return iochan_is_alive(assoc->client_chan);
3419 }
3420
3421
3422 /*
3423  * Local variables:
3424  * c-basic-offset: 4
3425  * c-file-style: "Stroustrup"
3426  * indent-tabs-mode: nil
3427  * End:
3428  * vim: shiftwidth=4 tabstop=8 expandtab
3429  */
3430