src/seshigh.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2012 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 #if HAVE_CONFIG_H
  29 #include <config.h>
  30 #endif
  31
  32 #include <limits.h>
  33 #include <stdlib.h>
  34 #include <stdio.h>
  35 #include <assert.h>
  36
  37 #if HAVE_SYS_TYPES_H
  38 #include <sys/types.h>
  39 #endif
  40 #if HAVE_SYS_STAT_H
  41 #include <sys/stat.h>
  42 #endif
  43
  44 #ifdef WIN32
  45 #include <io.h>
  46 #define S_ISREG(x) (x & _S_IFREG)
  47 #include <process.h>
  48 #endif
  49
  50 #if HAVE_UNISTD_H
  51 #include <unistd.h>
  52 #endif
  53
  54 #if YAZ_HAVE_XML2
  55 #include <libxml/parser.h>
  56 #include <libxml/tree.h>
  57 #endif
  58
  59 #include <yaz/xmalloc.h>
  60 #include <yaz/comstack.h>
  61 #include "eventl.h"
  62 #include "session.h"
  63 #include "mime.h"
  64 #include <yaz/proto.h>
  65 #include <yaz/oid_db.h>
  66 #include <yaz/log.h>
  67 #include <yaz/logrpn.h>
  68 #include <yaz/querytowrbuf.h>
  69 #include <yaz/statserv.h>
  70 #include <yaz/diagbib1.h>
  71 #include <yaz/charneg.h>
  72 #include <yaz/otherinfo.h>
  73 #include <yaz/yaz-util.h>
  74 #include <yaz/pquery.h>
  75 #include <yaz/oid_db.h>
  76
  77 #include <yaz/srw.h>
  78 #include <yaz/backend.h>
  79 #include <yaz/yaz-ccl.h>
  80
  81 static void process_gdu_request(association *assoc, request *req);
  82 static int process_z_request(association *assoc, request *req, char **msg);
  83 static int process_gdu_response(association *assoc, request *req, Z_GDU *res);
  84 static int process_z_response(association *assoc, request *req, Z_APDU *res);
  85 static Z_APDU *process_initRequest(association *assoc, request *reqb);
  86 static Z_External *init_diagnostics(ODR odr, int errcode,
  87                                     const char *errstring);
  88 static Z_APDU *process_searchRequest(association *assoc, request *reqb);
  89 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
  90                                       bend_search_rr *bsrr);
  91 static Z_APDU *process_presentRequest(association *assoc, request *reqb);
  92 static Z_APDU *process_scanRequest(association *assoc, request *reqb);
  93 static Z_APDU *process_sortRequest(association *assoc, request *reqb);
  94 static void process_close(association *assoc, request *reqb);
  95 static Z_APDU *process_deleteRequest(association *assoc, request *reqb);
  96 static Z_APDU *process_segmentRequest(association *assoc, request *reqb);
  97 static Z_APDU *process_ESRequest(association *assoc, request *reqb);
  98
  99 /* dynamic logging levels */
 100 static int logbits_set = 0;
 101 static int log_session = 0; /* one-line logs for session */
 102 static int log_sessiondetail = 0; /* more detailed stuff */
 103 static int log_request = 0; /* one-line logs for requests */
 104 static int log_requestdetail = 0;  /* more detailed stuff */
 105
 106 /** get_logbits sets global loglevel bits */
 107 static void get_logbits(void)
 108 { /* needs to be called after parsing cmd-line args that can set loglevels!*/
 109     if (!logbits_set)
 110     {
 111         logbits_set = 1;
 112         log_session = yaz_log_module_level("session");
 113         log_sessiondetail = yaz_log_module_level("sessiondetail");
 114         log_request = yaz_log_module_level("request");
 115         log_requestdetail = yaz_log_module_level("requestdetail");
 116     }
 117 }
 118
 119 static void wr_diag(WRBUF w, int error, const char *addinfo)
 120 {
 121     wrbuf_printf(w, "ERROR %d+", error);
 122     wrbuf_puts_replace_char(w, diagbib1_str(error), ' ', '_');
 123     if (addinfo)
 124     {
 125         wrbuf_puts(w, "+");
 126         wrbuf_puts_replace_char(w, addinfo, ' ', '_');
 127     }
 128     wrbuf_puts(w, " ");
 129 }
 130
 131 static int odr_int_to_int(Odr_int v)
 132 {
 133     if (v >= INT_MAX)
 134         return INT_MAX;
 135     else if (v <= INT_MIN)
 136         return INT_MIN;
 137     else
 138         return (int) v;
 139 }
 140
 141 /*
 142  * Create and initialize a new association-handle.
 143  *  channel  : iochannel for the current line.
 144  *  link     : communications channel.
 145  * Returns: 0 or a new association handle.
 146  */
 147 association *create_association(IOCHAN channel, COMSTACK link,
 148                                 const char *apdufile)
 149 {
 150     association *anew;
 151
 152     if (!logbits_set)
 153         get_logbits();
 154     if (!(anew = (association *)xmalloc(sizeof(*anew))))
 155         return 0;
 156     anew->init = 0;
 157     anew->version = 0;
 158     anew->last_control = 0;
 159     anew->client_chan = channel;
 160     anew->client_link = link;
 161     anew->cs_get_mask = 0;
 162     anew->cs_put_mask = 0;
 163     anew->cs_accept_mask = 0;
 164     if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
 165         !(anew->encode = odr_createmem(ODR_ENCODE)))
 166         return 0;
 167     if (apdufile && *apdufile)
 168     {
 169         FILE *f;
 170
 171         if (!(anew->print = odr_createmem(ODR_PRINT)))
 172             return 0;
 173         if (*apdufile == '@')
 174         {
 175             odr_setprint(anew->print, yaz_log_file());
 176         }
 177         else if (*apdufile != '-')
 178         {
 179             char filename[256];
 180             sprintf(filename, "%.200s.%ld", apdufile, (long)getpid());
 181             if (!(f = fopen(filename, "w")))
 182             {
 183                 yaz_log(YLOG_WARN|YLOG_ERRNO, "%s", filename);
 184                 return 0;
 185             }
 186             setvbuf(f, 0, _IONBF, 0);
 187             odr_setprint(anew->print, f);
 188         }
 189     }
 190     else
 191         anew->print = 0;
 192     anew->input_buffer = 0;
 193     anew->input_buffer_len = 0;
 194     anew->backend = 0;
 195     anew->state = ASSOC_NEW;
 196     request_initq(&anew->incoming);
 197     request_initq(&anew->outgoing);
 198     anew->proto = cs_getproto(link);
 199     anew->server = 0;
 200     return anew;
 201 }
 202
 203 /*
 204  * Free association and release resources.
 205  */
 206 void destroy_association(association *h)
 207 {
 208     statserv_options_block *cb = statserv_getcontrol();
 209     request *req;
 210
 211     xfree(h->init);
 212     odr_destroy(h->decode);
 213     odr_destroy(h->encode);
 214     if (h->print)
 215         odr_destroy(h->print);
 216     if (h->input_buffer)
 217     xfree(h->input_buffer);
 218     if (h->backend)
 219         (*cb->bend_close)(h->backend);
 220     while ((req = request_deq(&h->incoming)))
 221         request_release(req);
 222     while ((req = request_deq(&h->outgoing)))
 223         request_release(req);
 224     request_delq(&h->incoming);
 225     request_delq(&h->outgoing);
 226     xfree(h);
 227     xmalloc_trav("session closed");
 228 }
 229
 230 static void do_close_req(association *a, int reason, char *message,
 231                          request *req)
 232 {
 233     Z_APDU *apdu = zget_APDU(a->encode, Z_APDU_close);
 234     Z_Close *cls = apdu->u.close;
 235
 236     /* Purge request queue */
 237     while (request_deq(&a->incoming));
 238     while (request_deq(&a->outgoing));
 239     if (a->version >= 3)
 240     {
 241         yaz_log(log_requestdetail, "Sending Close PDU, reason=%d, message=%s",
 242             reason, message ? message : "none");
 243         *cls->closeReason = reason;
 244         cls->diagnosticInformation = message;
 245         process_z_response(a, req, apdu);
 246         iochan_settimeout(a->client_chan, 20);
 247     }
 248     else
 249     {
 250         request_release(req);
 251         yaz_log(log_requestdetail, "v2 client. No Close PDU");
 252         iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
 253         a->cs_put_mask = 0;
 254     }
 255     a->state = ASSOC_DEAD;
 256 }
 257
 258 static void do_close(association *a, int reason, char *message)
 259 {
 260     request *req = request_get(&a->outgoing);
 261     do_close_req(a, reason, message, req);
 262 }
 263
 264
 265 int ir_read(IOCHAN h, int event)
 266 {
 267     association *assoc = (association *)iochan_getdata(h);
 268     COMSTACK conn = assoc->client_link;
 269     request *req;
 270
 271     if ((assoc->cs_put_mask & EVENT_INPUT) == 0 && (event & assoc->cs_get_mask))
 272     {
 273         /* We aren't speaking to this fellow */
 274         if (assoc->state == ASSOC_DEAD)
 275         {
 276             yaz_log(log_session, "Connection closed - end of session");
 277             cs_close(conn);
 278             destroy_association(assoc);
 279             iochan_destroy(h);
 280             return 0;
 281         }
 282         assoc->cs_get_mask = EVENT_INPUT;
 283
 284         do
 285         {
 286             int res = cs_get(conn, &assoc->input_buffer,
 287                              &assoc->input_buffer_len);
 288             if (res < 0 && cs_errno(conn) == CSBUFSIZE)
 289             {
 290                 yaz_log(log_session, "Connection error: %s res=%d",
 291                         cs_errmsg(cs_errno(conn)), res);
 292                 req = request_get(&assoc->incoming); /* get a new request */
 293                 do_close_req(assoc, Z_Close_protocolError,
 294                              "Incoming package too large", req);
 295                 return 0;
 296             }
 297             else if (res <= 0)
 298             {
 299                 assoc->state = ASSOC_DEAD;
 300                 yaz_log(log_session, "Connection closed by client");
 301                 return 0;
 302             }
 303             else if (res == 1) /* incomplete read - wait for more  */
 304             {
 305                 if (conn->io_pending & CS_WANT_WRITE)
 306                     assoc->cs_get_mask |= EVENT_OUTPUT;
 307                 iochan_setflag(h, assoc->cs_get_mask);
 308                 return 0;
 309             }
 310             /* we got a complete PDU. Let's decode it */
 311             yaz_log(YLOG_DEBUG, "Got PDU, %d bytes: lead=%02X %02X %02X", res,
 312                     assoc->input_buffer[0] & 0xff,
 313                     assoc->input_buffer[1] & 0xff,
 314                     assoc->input_buffer[2] & 0xff);
 315             req = request_get(&assoc->incoming); /* get a new request */
 316             odr_reset(assoc->decode);
 317             odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
 318             if (!z_GDU(assoc->decode, &req->gdu_request, 0, 0))
 319             {
 320                 yaz_log(YLOG_WARN, "ODR error on incoming PDU: %s [element %s] "
 321                         "[near byte %ld] ",
 322                         odr_errmsg(odr_geterror(assoc->decode)),
 323                         odr_getelement(assoc->decode),
 324                         (long) odr_offset(assoc->decode));
 325                 if (assoc->decode->error != OHTTP)
 326                 {
 327                     yaz_log(YLOG_WARN, "PDU dump:");
 328                     odr_dumpBER(yaz_log_file(), assoc->input_buffer, res);
 329                     request_release(req);
 330                     do_close(assoc, Z_Close_protocolError, "Malformed package");
 331                 }
 332                 else
 333                 {
 334                     Z_GDU *p = z_get_HTTP_Response(assoc->encode, 400);
 335                     assoc->state = ASSOC_DEAD;
 336                     process_gdu_response(assoc, req, p);
 337                 }
 338                 return 0;
 339             }
 340             req->request_mem = odr_extract_mem(assoc->decode);
 341             if (assoc->print)
 342             {
 343                 if (!z_GDU(assoc->print, &req->gdu_request, 0, 0))
 344                     yaz_log(YLOG_WARN, "ODR print error: %s",
 345                             odr_errmsg(odr_geterror(assoc->print)));
 346                 odr_reset(assoc->print);
 347             }
 348             request_enq(&assoc->incoming, req);
 349         }
 350         while (cs_more(conn));
 351     }
 352     return 1;
 353 }
 354
 355 /*
 356  * This is where PDUs from the client are read and the further
 357  * processing is initiated. Flow of control moves down through the
 358  * various process_* functions below, until the encoded result comes back up
 359  * to the output handler in here.
 360  *
 361  *  h     : the I/O channel that has an outstanding event.
 362  *  event : the current outstanding event.
 363  */
 364 void ir_session(IOCHAN h, int event)
 365 {
 366     int res;
 367     association *assoc = (association *)iochan_getdata(h);
 368     COMSTACK conn = assoc->client_link;
 369     request *req;
 370
 371     assert(h && conn && assoc);
 372     if (event == EVENT_TIMEOUT)
 373     {
 374         if (assoc->state != ASSOC_UP)
 375         {
 376             yaz_log(log_session, "Timeout. Closing connection");
 377             /* do we need to lod this at all */
 378             cs_close(conn);
 379             destroy_association(assoc);
 380             iochan_destroy(h);
 381         }
 382         else
 383         {
 384             yaz_log(log_sessiondetail, "Timeout. Sending Z39.50 Close");
 385             do_close(assoc, Z_Close_lackOfActivity, 0);
 386         }
 387         return;
 388     }
 389     if (event & assoc->cs_accept_mask)
 390     {
 391         if (!cs_accept(conn))
 392         {
 393             yaz_log(YLOG_WARN, "accept failed");
 394             destroy_association(assoc);
 395             iochan_destroy(h);
 396             return;
 397         }
 398         iochan_clearflag(h, EVENT_OUTPUT);
 399         if (conn->io_pending)
 400         {   /* cs_accept didn't complete */
 401             assoc->cs_accept_mask =
 402                 ((conn->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
 403                 ((conn->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
 404
 405             iochan_setflag(h, assoc->cs_accept_mask);
 406         }
 407         else
 408         {   /* cs_accept completed. Prepare for reading (cs_get) */
 409             assoc->cs_accept_mask = 0;
 410             assoc->cs_get_mask = EVENT_INPUT;
 411             iochan_setflag(h, assoc->cs_get_mask);
 412         }
 413         return;
 414     }
 415     if (event & assoc->cs_get_mask) /* input */
 416     {
 417         if (!ir_read(h, event))
 418             return;
 419         req = request_head(&assoc->incoming);
 420         if (req->state == REQUEST_IDLE)
 421         {
 422             request_deq(&assoc->incoming);
 423             process_gdu_request(assoc, req);
 424         }
 425     }
 426     if (event & assoc->cs_put_mask)
 427     {
 428         request *req = request_head(&assoc->outgoing);
 429
 430         assoc->cs_put_mask = 0;
 431         yaz_log(YLOG_DEBUG, "ir_session (output)");
 432         req->state = REQUEST_PENDING;
 433         switch (res = cs_put(conn, req->response, req->len_response))
 434         {
 435         case -1:
 436             yaz_log(log_sessiondetail, "Connection closed by client");
 437             cs_close(conn);
 438             destroy_association(assoc);
 439             iochan_destroy(h);
 440             break;
 441         case 0: /* all sent - release the request structure */
 442             yaz_log(YLOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
 443 #if 0
 444             yaz_log(YLOG_DEBUG, "HTTP out:\n%.*s", req->len_response,
 445                     req->response);
 446 #endif
 447             request_deq(&assoc->outgoing);
 448             request_release(req);
 449             if (!request_head(&assoc->outgoing))
 450             {   /* restore mask for cs_get operation ... */
 451                 iochan_clearflag(h, EVENT_OUTPUT|EVENT_INPUT);
 452                 iochan_setflag(h, assoc->cs_get_mask);
 453                 if (assoc->state == ASSOC_DEAD)
 454                     iochan_setevent(assoc->client_chan, EVENT_TIMEOUT);
 455             }
 456             else
 457             {
 458                 assoc->cs_put_mask = EVENT_OUTPUT;
 459             }
 460             break;
 461         default:
 462             if (conn->io_pending & CS_WANT_WRITE)
 463                 assoc->cs_put_mask |= EVENT_OUTPUT;
 464             if (conn->io_pending & CS_WANT_READ)
 465                 assoc->cs_put_mask |= EVENT_INPUT;
 466             iochan_setflag(h, assoc->cs_put_mask);
 467         }
 468     }
 469     if (event & EVENT_EXCEPT)
 470     {
 471         yaz_log(YLOG_WARN, "ir_session (exception)");
 472         cs_close(conn);
 473         destroy_association(assoc);
 474         iochan_destroy(h);
 475     }
 476 }
 477
 478 static int process_z_request(association *assoc, request *req, char **msg);
 479
 480
 481 static void assoc_init_reset(association *assoc)
 482 {
 483     xfree(assoc->init);
 484     assoc->init = (bend_initrequest *) xmalloc(sizeof(*assoc->init));
 485
 486     assoc->init->stream = assoc->encode;
 487     assoc->init->print = assoc->print;
 488     assoc->init->auth = 0;
 489     assoc->init->referenceId = 0;
 490     assoc->init->implementation_version = 0;
 491     assoc->init->implementation_id = 0;
 492     assoc->init->implementation_name = 0;
 493     assoc->init->query_charset = 0;
 494     assoc->init->records_in_same_charset = 0;
 495     assoc->init->bend_sort = NULL;
 496     assoc->init->bend_search = NULL;
 497     assoc->init->bend_present = NULL;
 498     assoc->init->bend_esrequest = NULL;
 499     assoc->init->bend_delete = NULL;
 500     assoc->init->bend_scan = NULL;
 501     assoc->init->bend_segment = NULL;
 502     assoc->init->bend_fetch = NULL;
 503     assoc->init->bend_explain = NULL;
 504     assoc->init->bend_srw_scan = NULL;
 505     assoc->init->bend_srw_update = NULL;
 506     assoc->init->named_result_sets = 0;
 507
 508     assoc->init->charneg_request = NULL;
 509     assoc->init->charneg_response = NULL;
 510
 511     assoc->init->decode = assoc->decode;
 512     assoc->init->peer_name =
 513         odr_strdup(assoc->encode, cs_addrstr(assoc->client_link));
 514
 515     yaz_log(log_requestdetail, "peer %s", assoc->init->peer_name);
 516 }
 517
 518 static int srw_bend_init(association *assoc, Z_SRW_diagnostic **d, int *num, Z_SRW_PDU *sr)
 519 {
 520     statserv_options_block *cb = statserv_getcontrol();
 521     if (!assoc->init)
 522     {
 523         const char *encoding = "UTF-8";
 524         Z_External *ce;
 525         bend_initresult *binitres;
 526
 527         yaz_log(log_requestdetail, "srw_bend_init config=%s", cb->configname);
 528         assoc_init_reset(assoc);
 529
 530         if (sr->username)
 531         {
 532             Z_IdAuthentication *auth = (Z_IdAuthentication *)
 533                 odr_malloc(assoc->decode, sizeof(*auth));
 534             size_t len;
 535
 536             len = strlen(sr->username) + 1;
 537             if (sr->password)
 538                 len += strlen(sr->password) + 2;
 539             yaz_log(log_requestdetail, "username=%s password-len=%ld",
 540                     sr->username, (long)
 541                     (sr->password ? strlen(sr->password) : 0));
 542             auth->which = Z_IdAuthentication_open;
 543             auth->u.open = (char *) odr_malloc(assoc->decode, len);
 544             strcpy(auth->u.open, sr->username);
 545             if (sr->password && *sr->password)
 546             {
 547                 strcat(auth->u.open, "/");
 548                 strcat(auth->u.open, sr->password);
 549             }
 550             assoc->init->auth = auth;
 551         }
 552
 553 #if 1
 554         ce = yaz_set_proposal_charneg(assoc->decode, &encoding, 1, 0, 0, 1);
 555         assoc->init->charneg_request = ce->u.charNeg3;
 556 #endif
 557         assoc->backend = 0;
 558         if (!(binitres = (*cb->bend_init)(assoc->init)))
 559         {
 560             assoc->state = ASSOC_DEAD;
 561             yaz_add_srw_diagnostic(assoc->encode, d, num,
 562                             YAZ_SRW_AUTHENTICATION_ERROR, 0);
 563             return 0;
 564         }
 565         assoc->backend = binitres->handle;
 566         assoc->init->auth = 0;
 567         if (binitres->errcode)
 568         {
 569             int srw_code = yaz_diag_bib1_to_srw(binitres->errcode);
 570             assoc->state = ASSOC_DEAD;
 571             yaz_add_srw_diagnostic(assoc->encode, d, num, srw_code,
 572                                    binitres->errstring);
 573             return 0;
 574         }
 575         return 1;
 576     }
 577     return 1;
 578 }
 579
 580 static int retrieve_fetch(association *assoc, bend_fetch_rr *rr)
 581 {
 582 #if YAZ_HAVE_XML2
 583     yaz_record_conv_t rc = 0;
 584     const char *match_schema = 0;
 585     Odr_oid *match_syntax = 0;
 586
 587     if (assoc->server)
 588     {
 589         int r;
 590         const char *input_schema = yaz_get_esn(rr->comp);
 591         Odr_oid *input_syntax_raw = rr->request_format;
 592
 593         const char *backend_schema = 0;
 594         Odr_oid *backend_syntax = 0;
 595
 596         r = yaz_retrieval_request(assoc->server->retrieval,
 597                                   input_schema,
 598                                   input_syntax_raw,
 599                                   &match_schema,
 600                                   &match_syntax,
 601                                   &rc,
 602                                   &backend_schema,
 603                                   &backend_syntax);
 604         if (r == -1) /* error ? */
 605         {
 606             const char *details = yaz_retrieval_get_error(
 607                 assoc->server->retrieval);
 608
 609             rr->errcode = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 610             if (details)
 611                 rr->errstring = odr_strdup(rr->stream, details);
 612             return -1;
 613         }
 614         else if (r == 1 || r == 3)
 615         {
 616             const char *details = input_schema;
 617             rr->errcode =
 618                 YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 619             if (details)
 620                 rr->errstring = odr_strdup(rr->stream, details);
 621             return -1;
 622         }
 623         else if (r == 2)
 624         {
 625             rr->errcode = YAZ_BIB1_RECORD_SYNTAX_UNSUPP;
 626             if (input_syntax_raw)
 627             {
 628                 char oidbuf[OID_STR_MAX];
 629                 oid_oid_to_dotstring(input_syntax_raw, oidbuf);
 630                 rr->errstring = odr_strdup(rr->stream, oidbuf);
 631             }
 632             return -1;
 633         }
 634         if (backend_schema)
 635         {
 636             yaz_set_esn(&rr->comp, backend_schema, odr_getmem(rr->stream));
 637         }
 638         if (backend_syntax)
 639             rr->request_format = backend_syntax;
 640     }
 641     (*assoc->init->bend_fetch)(assoc->backend, rr);
 642     if (rc && rr->record && rr->errcode == 0 && rr->len > 0)
 643     {   /* post conversion must take place .. */
 644         WRBUF output_record = wrbuf_alloc();
 645         int r = yaz_record_conv_record(rc, rr->record, rr->len, output_record);
 646         if (r)
 647         {
 648             const char *details = yaz_record_conv_get_error(rc);
 649             rr->errcode = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 650             if (details)
 651                 rr->errstring = odr_strdup(rr->stream, details);
 652         }
 653         else
 654         {
 655             rr->len = wrbuf_len(output_record);
 656             rr->record = (char *) odr_malloc(rr->stream, rr->len);
 657             memcpy(rr->record, wrbuf_buf(output_record), rr->len);
 658         }
 659         wrbuf_destroy(output_record);
 660     }
 661     if (match_syntax)
 662         rr->output_format = match_syntax;
 663     if (match_schema)
 664         rr->schema = odr_strdup(rr->stream, match_schema);
 665 #else
 666     (*assoc->init->bend_fetch)(assoc->backend, rr);
 667 #endif
 668     return 0;
 669 }
 670
 671 static int srw_bend_fetch(association *assoc, int pos,
 672                           Z_SRW_searchRetrieveRequest *srw_req,
 673                           Z_SRW_record *record,
 674                           const char **addinfo)
 675 {
 676     bend_fetch_rr rr;
 677     ODR o = assoc->encode;
 678
 679     rr.setname = "default";
 680     rr.number = pos;
 681     rr.referenceId = 0;
 682     rr.request_format = odr_oiddup(assoc->decode, yaz_oid_recsyn_xml);
 683
 684     rr.comp = (Z_RecordComposition *)
 685             odr_malloc(assoc->decode, sizeof(*rr.comp));
 686     rr.comp->which = Z_RecordComp_complex;
 687     rr.comp->u.complex = (Z_CompSpec *)
 688             odr_malloc(assoc->decode, sizeof(Z_CompSpec));
 689     rr.comp->u.complex->selectAlternativeSyntax = (bool_t *)
 690         odr_malloc(assoc->encode, sizeof(bool_t));
 691     *rr.comp->u.complex->selectAlternativeSyntax = 0;
 692     rr.comp->u.complex->num_dbSpecific = 0;
 693     rr.comp->u.complex->dbSpecific = 0;
 694     rr.comp->u.complex->num_recordSyntax = 0;
 695     rr.comp->u.complex->recordSyntax = 0;
 696
 697     rr.comp->u.complex->generic = (Z_Specification *)
 698             odr_malloc(assoc->decode, sizeof(Z_Specification));
 699
 700     /* schema uri = recordSchema (or NULL if recordSchema is not given) */
 701     rr.comp->u.complex->generic->which = Z_Schema_uri;
 702     rr.comp->u.complex->generic->schema.uri = srw_req->recordSchema;
 703
 704     /* ESN = recordSchema if recordSchema is present */
 705     rr.comp->u.complex->generic->elementSpec = 0;
 706     if (srw_req->recordSchema)
 707     {
 708         rr.comp->u.complex->generic->elementSpec =
 709             (Z_ElementSpec *) odr_malloc(assoc->encode, sizeof(Z_ElementSpec));
 710         rr.comp->u.complex->generic->elementSpec->which =
 711             Z_ElementSpec_elementSetName;
 712         rr.comp->u.complex->generic->elementSpec->u.elementSetName =
 713             srw_req->recordSchema;
 714     }
 715
 716     rr.stream = assoc->encode;
 717     rr.print = assoc->print;
 718
 719     rr.basename = 0;
 720     rr.len = 0;
 721     rr.record = 0;
 722     rr.last_in_set = 0;
 723     rr.errcode = 0;
 724     rr.errstring = 0;
 725     rr.surrogate_flag = 0;
 726     rr.schema = srw_req->recordSchema;
 727
 728     if (!assoc->init->bend_fetch)
 729         return 1;
 730
 731     retrieve_fetch(assoc, &rr);
 732
 733     if (rr.errcode && rr.surrogate_flag)
 734     {
 735         int code = yaz_diag_bib1_to_srw(rr.errcode);
 736         yaz_mk_sru_surrogate(o, record, pos, code, rr.errstring);
 737         return 0;
 738     }
 739     else if (rr.len >= 0)
 740     {
 741         record->recordData_buf = rr.record;
 742         record->recordData_len = rr.len;
 743         record->recordPosition = odr_intdup(o, pos);
 744         record->recordSchema = odr_strdup_null(
 745             o, rr.schema ? rr.schema : srw_req->recordSchema);
 746     }
 747     if (rr.errcode)
 748     {
 749         *addinfo = rr.errstring;
 750         return rr.errcode;
 751     }
 752     return 0;
 753 }
 754
 755 static int cql2pqf(ODR odr, const char *cql, cql_transform_t ct,
 756                    Z_Query *query_result, char **sortkeys_p)
 757 {
 758     /* have a CQL query and  CQL to PQF transform .. */
 759     CQL_parser cp = cql_parser_create();
 760     int r;
 761     int srw_errcode = 0;
 762     const char *add = 0;
 763     WRBUF rpn_buf = wrbuf_alloc();
 764
 765     *sortkeys_p = 0;
 766     r = cql_parser_string(cp, cql);
 767     if (r)
 768     {
 769         srw_errcode = YAZ_SRW_QUERY_SYNTAX_ERROR;
 770     }
 771     if (!r)
 772     {
 773         struct cql_node *cn = cql_parser_result(cp);
 774
 775         /* Syntax OK */
 776         r = cql_transform(ct, cn, wrbuf_vp_puts, rpn_buf);
 777         if (r)
 778             srw_errcode = cql_transform_error(ct, &add);
 779         else
 780         {
 781             char out[100];
 782             int r = cql_sortby_to_sortkeys_buf(cn, out, sizeof(out)-1);
 783
 784             if (r == 0)
 785             {
 786                 if (*out)
 787                     yaz_log(log_requestdetail, "srw_sortKeys '%s'", out);
 788                 *sortkeys_p = odr_strdup(odr, out);
 789             }
 790             else
 791             {
 792                 yaz_log(log_requestdetail, "failed to create srw_sortKeys");
 793                 srw_errcode = YAZ_SRW_UNSUPP_SORT_TYPE;
 794             }
 795         }
 796     }
 797     if (!r)
 798     {
 799         /* Syntax & transform OK. */
 800         /* Convert PQF string to Z39.50 to RPN query struct */
 801         YAZ_PQF_Parser pp = yaz_pqf_create();
 802         Z_RPNQuery *rpnquery = yaz_pqf_parse(pp, odr, wrbuf_cstr(rpn_buf));
 803         if (!rpnquery)
 804         {
 805             size_t off;
 806             const char *pqf_msg;
 807             int code = yaz_pqf_error(pp, &pqf_msg, &off);
 808             yaz_log(YLOG_WARN, "PQF Parser Error %s (code %d)",
 809                     pqf_msg, code);
 810             srw_errcode = YAZ_SRW_QUERY_SYNTAX_ERROR;
 811         }
 812         else
 813         {
 814             query_result->which = Z_Query_type_1;
 815             query_result->u.type_1 = rpnquery;
 816         }
 817         yaz_pqf_destroy(pp);
 818     }
 819     cql_parser_destroy(cp);
 820     wrbuf_destroy(rpn_buf);
 821     return srw_errcode;
 822 }
 823
 824 static int cql2pqf_scan(ODR odr, const char *cql, cql_transform_t ct,
 825                         Z_AttributesPlusTerm *result)
 826 {
 827     Z_Query query;
 828     Z_RPNQuery *rpn;
 829     char *sortkeys = 0;
 830     int srw_error = cql2pqf(odr, cql, ct, &query, &sortkeys);
 831     if (srw_error)
 832         return srw_error;
 833     if (query.which != Z_Query_type_1 && query.which != Z_Query_type_101)
 834         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* bad query type */
 835     rpn = query.u.type_1;
 836     if (!rpn->RPNStructure)
 837         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be structure */
 838     if (rpn->RPNStructure->which != Z_RPNStructure_simple)
 839         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be simple */
 840     if (rpn->RPNStructure->u.simple->which != Z_Operand_APT)
 841         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be be attributes + term */
 842     memcpy(result, rpn->RPNStructure->u.simple->u.attributesPlusTerm,
 843            sizeof(*result));
 844     return 0;
 845 }
 846
 847
 848 static int ccl2pqf(ODR odr, const Odr_oct *ccl, CCL_bibset bibset,
 849                    bend_search_rr *bsrr)
 850 {
 851     char *ccl0;
 852     struct ccl_rpn_node *node;
 853     int errcode, pos;
 854
 855     ccl0 = odr_strdupn(odr, (char*) ccl->buf, ccl->len);
 856     if ((node = ccl_find_str(bibset, ccl0, &errcode, &pos)) == 0)
 857     {
 858         bsrr->errstring = (char*) ccl_err_msg(errcode);
 859         return YAZ_SRW_QUERY_SYNTAX_ERROR;    /* Query syntax error */
 860     }
 861
 862     bsrr->query->which = Z_Query_type_1;
 863     bsrr->query->u.type_1 = ccl_rpn_query(odr, node);
 864     return 0;
 865 }
 866
 867 static void srw_bend_search(association *assoc,
 868                             Z_SRW_PDU *sr,
 869                             Z_SRW_PDU *res,
 870                             int *http_code)
 871 {
 872     Z_SRW_searchRetrieveResponse *srw_res = res->u.response;
 873     int srw_error = 0;
 874     Z_External *ext;
 875     Z_SRW_searchRetrieveRequest *srw_req = sr->u.request;
 876
 877     *http_code = 200;
 878     yaz_log(log_requestdetail, "Got SRW SearchRetrieveRequest");
 879     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
 880     if (srw_res->num_diagnostics == 0 && assoc->init)
 881     {
 882         bend_search_rr rr;
 883         rr.setname = "default";
 884         rr.replace_set = 1;
 885         rr.num_bases = 1;
 886         rr.basenames = &srw_req->database;
 887         rr.referenceId = 0;
 888         rr.srw_sortKeys = 0;
 889         rr.srw_setname = 0;
 890         rr.srw_setnameIdleTime = 0;
 891         rr.estimated_hit_count = 0;
 892         rr.partial_resultset = 0;
 893         rr.query = (Z_Query *) odr_malloc(assoc->decode, sizeof(*rr.query));
 894         rr.query->u.type_1 = 0;
 895         rr.extra_args = sr->extra_args;
 896         rr.extra_response_data = 0;
 897
 898         if (srw_req->query_type == Z_SRW_query_type_cql)
 899         {
 900             if (assoc->server && assoc->server->cql_transform)
 901             {
 902                 int srw_errcode = cql2pqf(assoc->encode, srw_req->query.cql,
 903                                           assoc->server->cql_transform,
 904                                           rr.query,
 905                                           &rr.srw_sortKeys);
 906
 907                 if (srw_errcode)
 908                 {
 909                     yaz_add_srw_diagnostic(assoc->encode,
 910                                            &srw_res->diagnostics,
 911                                            &srw_res->num_diagnostics,
 912                                            srw_errcode, 0);
 913                 }
 914             }
 915             else
 916             {
 917                 /* CQL query to backend. Wrap it - Z39.50 style */
 918                 ext = (Z_External *) odr_malloc(assoc->decode, sizeof(*ext));
 919                 ext->direct_reference = odr_getoidbystr(assoc->decode,
 920                                                         "1.2.840.10003.16.2");
 921                 ext->indirect_reference = 0;
 922                 ext->descriptor = 0;
 923                 ext->which = Z_External_CQL;
 924                 ext->u.cql = srw_req->query.cql;
 925
 926                 rr.query->which = Z_Query_type_104;
 927                 rr.query->u.type_104 =  ext;
 928             }
 929         }
 930         else if (srw_req->query_type == Z_SRW_query_type_pqf)
 931         {
 932             Z_RPNQuery *RPNquery;
 933             YAZ_PQF_Parser pqf_parser;
 934
 935             pqf_parser = yaz_pqf_create();
 936
 937             RPNquery = yaz_pqf_parse(pqf_parser, assoc->decode,
 938                                      srw_req->query.pqf);
 939             if (!RPNquery)
 940             {
 941                 const char *pqf_msg;
 942                 size_t off;
 943                 int code = yaz_pqf_error(pqf_parser, &pqf_msg, &off);
 944                 yaz_log(log_requestdetail, "Parse error %d %s near offset %ld",
 945                         code, pqf_msg, (long) off);
 946                 srw_error = YAZ_SRW_QUERY_SYNTAX_ERROR;
 947             }
 948
 949             rr.query->which = Z_Query_type_1;
 950             rr.query->u.type_1 =  RPNquery;
 951
 952             yaz_pqf_destroy(pqf_parser);
 953         }
 954         else
 955         {
 956             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
 957                                    &srw_res->num_diagnostics,
 958                                    YAZ_SRW_UNSUPP_QUERY_TYPE, 0);
 959         }
 960         if (rr.query->u.type_1)
 961         {
 962             rr.stream = assoc->encode;
 963             rr.decode = assoc->decode;
 964             rr.print = assoc->print;
 965             if (srw_req->sort.sortKeys)
 966                 rr.srw_sortKeys = odr_strdup(assoc->encode,
 967                                              srw_req->sort.sortKeys);
 968             rr.association = assoc;
 969             rr.hits = 0;
 970             rr.errcode = 0;
 971             rr.errstring = 0;
 972             rr.search_info = 0;
 973             rr.search_input = 0;
 974             yaz_log_zquery_level(log_requestdetail,rr.query);
 975
 976             (assoc->init->bend_search)(assoc->backend, &rr);
 977             if (rr.errcode)
 978             {
 979                 if (rr.errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
 980                 {
 981                     *http_code = 404;
 982                 }
 983                 else
 984                 {
 985                     srw_error = yaz_diag_bib1_to_srw(rr.errcode);
 986                     yaz_add_srw_diagnostic(assoc->encode,
 987                                            &srw_res->diagnostics,
 988                                            &srw_res->num_diagnostics,
 989                                            srw_error, rr.errstring);
 990                 }
 991             }
 992             else
 993             {
 994                 int number = srw_req->maximumRecords ?
 995                     odr_int_to_int(*srw_req->maximumRecords) : 0;
 996                 int start = srw_req->startRecord ?
 997                     odr_int_to_int(*srw_req->startRecord) : 1;
 998
 999                 yaz_log(log_requestdetail, "Request to pack %d+%d out of "
1000                         ODR_INT_PRINTF,
1001                         start, number, rr.hits);
1002
1003                 srw_res->numberOfRecords = odr_intdup(assoc->encode, rr.hits);
1004                 if (rr.srw_setname)
1005                 {
1006                     srw_res->resultSetId =
1007                         odr_strdup(assoc->encode, rr.srw_setname );
1008                     srw_res->resultSetIdleTime =
1009                         odr_intdup(assoc->encode, *rr.srw_setnameIdleTime );
1010                 }
1011
1012                 if (start > rr.hits || start < 1)
1013                 {
1014                     /* if hits<=0 and start=1 we don't return a diagnostic */
1015                     if (start != 1)
1016                         yaz_add_srw_diagnostic(
1017                             assoc->encode,
1018                             &srw_res->diagnostics, &srw_res->num_diagnostics,
1019                             YAZ_SRW_FIRST_RECORD_POSITION_OUT_OF_RANGE, 0);
1020                 }
1021                 else if (number > 0)
1022                 {
1023                     int i;
1024                     int ok = 1;
1025                     if (start + number > rr.hits)
1026                         number = odr_int_to_int(rr.hits) - start + 1;
1027
1028                     /* Call bend_present if defined */
1029                     if (assoc->init->bend_present)
1030                     {
1031                         bend_present_rr *bprr = (bend_present_rr*)
1032                             odr_malloc(assoc->decode, sizeof(*bprr));
1033                         bprr->setname = "default";
1034                         bprr->start = start;
1035                         bprr->number = number;
1036                         if (srw_req->recordSchema)
1037                         {
1038                             bprr->comp = (Z_RecordComposition *) odr_malloc(assoc->decode,
1039                                                                             sizeof(*bprr->comp));
1040                             bprr->comp->which = Z_RecordComp_simple;
1041                             bprr->comp->u.simple = (Z_ElementSetNames *)
1042                                 odr_malloc(assoc->decode, sizeof(Z_ElementSetNames));
1043                             bprr->comp->u.simple->which = Z_ElementSetNames_generic;
1044                             bprr->comp->u.simple->u.generic = srw_req->recordSchema;
1045                         }
1046                         else
1047                         {
1048                             bprr->comp = 0;
1049                         }
1050                         bprr->stream = assoc->encode;
1051                         bprr->referenceId = 0;
1052                         bprr->print = assoc->print;
1053                         bprr->association = assoc;
1054                         bprr->errcode = 0;
1055                         bprr->errstring = NULL;
1056                         (*assoc->init->bend_present)(assoc->backend, bprr);
1057
1058                         if (bprr->errcode)
1059                         {
1060                             srw_error = yaz_diag_bib1_to_srw(bprr->errcode);
1061                             yaz_add_srw_diagnostic(assoc->encode,
1062                                                    &srw_res->diagnostics,
1063                                                    &srw_res->num_diagnostics,
1064                                                    srw_error, bprr->errstring);
1065                             ok = 0;
1066                         }
1067                     }
1068
1069                     if (ok)
1070                     {
1071                         int j = 0;
1072                         int packing = Z_SRW_recordPacking_string;
1073                         if (srw_req->recordPacking)
1074                         {
1075                             packing =
1076                                 yaz_srw_str_to_pack(srw_req->recordPacking);
1077                             if (packing == -1)
1078                                 packing = Z_SRW_recordPacking_string;
1079                         }
1080                         srw_res->records = (Z_SRW_record *)
1081                             odr_malloc(assoc->encode,
1082                                        number * sizeof(*srw_res->records));
1083
1084                         srw_res->extra_records = (Z_SRW_extra_record **)
1085                             odr_malloc(assoc->encode,
1086                                        number*sizeof(*srw_res->extra_records));
1087
1088                         for (i = 0; i<number; i++)
1089                         {
1090                             int errcode;
1091                             const char *addinfo = 0;
1092
1093                             srw_res->records[j].recordPacking = packing;
1094                             srw_res->records[j].recordData_buf = 0;
1095                             srw_res->extra_records[j] = 0;
1096                             yaz_log(YLOG_DEBUG, "srw_bend_fetch %d", i+start);
1097                             errcode = srw_bend_fetch(assoc, i+start, srw_req,
1098                                                      srw_res->records + j,
1099                                                      &addinfo);
1100                             if (errcode)
1101                             {
1102                                 yaz_add_srw_diagnostic(assoc->encode,
1103                                                        &srw_res->diagnostics,
1104                                                        &srw_res->num_diagnostics,
1105                                                        yaz_diag_bib1_to_srw(errcode),
1106                                                        addinfo);
1107
1108                                 break;
1109                             }
1110                             if (srw_res->records[j].recordData_buf)
1111                                 j++;
1112                         }
1113                         srw_res->num_records = j;
1114                         if (!j)
1115                             srw_res->records = 0;
1116                     }
1117                 }
1118                 if (rr.extra_response_data)
1119                 {
1120                     res->extraResponseData_buf = rr.extra_response_data;
1121                     res->extraResponseData_len = strlen(rr.extra_response_data);
1122                 }
1123                 if (rr.estimated_hit_count || rr.partial_resultset)
1124                 {
1125                     yaz_add_srw_diagnostic(
1126                         assoc->encode,
1127                         &srw_res->diagnostics,
1128                         &srw_res->num_diagnostics,
1129                         YAZ_SRW_RESULT_SET_CREATED_WITH_VALID_PARTIAL_RESULTS_AVAILABLE,
1130                         0);
1131                 }
1132             }
1133         }
1134     }
1135     if (log_request)
1136     {
1137         const char *querystr = "?";
1138         const char *querytype = "?";
1139         WRBUF wr = wrbuf_alloc();
1140
1141         switch (srw_req->query_type)
1142         {
1143         case Z_SRW_query_type_cql:
1144             querytype = "CQL";
1145             querystr = srw_req->query.cql;
1146             break;
1147         case Z_SRW_query_type_pqf:
1148             querytype = "PQF";
1149             querystr = srw_req->query.pqf;
1150             break;
1151         }
1152         wrbuf_printf(wr, "SRWSearch %s ", srw_req->database);
1153         if (srw_res->num_diagnostics)
1154             wrbuf_printf(wr, "ERROR %s", srw_res->diagnostics[0].uri);
1155         else if (*http_code != 200)
1156             wrbuf_printf(wr, "ERROR info:http/%d", *http_code);
1157         else if (srw_res->numberOfRecords)
1158         {
1159             wrbuf_printf(wr, "OK " ODR_INT_PRINTF,
1160                          (srw_res->numberOfRecords ?
1161                           *srw_res->numberOfRecords : 0));
1162         }
1163         wrbuf_printf(wr, " %s " ODR_INT_PRINTF "+%d",
1164                      (srw_res->resultSetId ?
1165                       srw_res->resultSetId : "-"),
1166                      (srw_req->startRecord ? *srw_req->startRecord : 1),
1167                      srw_res->num_records);
1168         yaz_log(log_request, "%s %s: %s", wrbuf_cstr(wr), querytype, querystr);
1169         wrbuf_destroy(wr);
1170     }
1171 }
1172
1173 static char *srw_bend_explain_default(bend_explain_rr *rr)
1174 {
1175 #if YAZ_HAVE_XML2
1176     xmlNodePtr ptr = (xmlNode *) rr->server_node_ptr;
1177     if (!ptr)
1178         return 0;
1179     for (ptr = ptr->children; ptr; ptr = ptr->next)
1180     {
1181         if (ptr->type != XML_ELEMENT_NODE)
1182             continue;
1183         if (!strcmp((const char *) ptr->name, "explain"))
1184         {
1185             int len;
1186             xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
1187             xmlChar *buf_out;
1188             char *content;
1189
1190             ptr = xmlCopyNode(ptr, 1);
1191
1192             xmlDocSetRootElement(doc, ptr);
1193
1194             xmlDocDumpMemory(doc, &buf_out, &len);
1195             content = (char*) odr_malloc(rr->stream, 1+len);
1196             memcpy(content, buf_out, len);
1197             content[len] = '\0';
1198
1199             xmlFree(buf_out);
1200             xmlFreeDoc(doc);
1201             rr->explain_buf = content;
1202             return 0;
1203         }
1204     }
1205 #endif
1206     return 0;
1207 }
1208
1209 static void srw_bend_explain(association *assoc,
1210                              Z_SRW_PDU *sr,
1211                              Z_SRW_explainResponse *srw_res,
1212                              int *http_code)
1213 {
1214     Z_SRW_explainRequest *srw_req = sr->u.explain_request;
1215     yaz_log(log_requestdetail, "Got SRW ExplainRequest");
1216     *http_code = 404;
1217     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1218     if (assoc->init)
1219     {
1220         bend_explain_rr rr;
1221
1222         rr.stream = assoc->encode;
1223         rr.decode = assoc->decode;
1224         rr.print = assoc->print;
1225         rr.explain_buf = 0;
1226         rr.database = srw_req->database;
1227         if (assoc->server)
1228             rr.server_node_ptr = assoc->server->server_node_ptr;
1229         else
1230             rr.server_node_ptr = 0;
1231         rr.schema = "http://explain.z3950.org/dtd/2.0/";
1232         if (assoc->init->bend_explain)
1233             (*assoc->init->bend_explain)(assoc->backend, &rr);
1234         else
1235             srw_bend_explain_default(&rr);
1236
1237         if (rr.explain_buf)
1238         {
1239             int packing = Z_SRW_recordPacking_string;
1240             if (srw_req->recordPacking)
1241             {
1242                 packing =
1243                     yaz_srw_str_to_pack(srw_req->recordPacking);
1244                 if (packing == -1)
1245                     packing = Z_SRW_recordPacking_string;
1246             }
1247             srw_res->record.recordSchema = rr.schema;
1248             srw_res->record.recordPacking = packing;
1249             srw_res->record.recordData_buf = rr.explain_buf;
1250             srw_res->record.recordData_len = strlen(rr.explain_buf);
1251             srw_res->record.recordPosition = 0;
1252             *http_code = 200;
1253         }
1254     }
1255 }
1256
1257 static void srw_bend_scan(association *assoc,
1258                           Z_SRW_PDU *sr,
1259                           Z_SRW_scanResponse *srw_res,
1260                           int *http_code)
1261 {
1262     Z_SRW_scanRequest *srw_req = sr->u.scan_request;
1263     yaz_log(log_requestdetail, "Got SRW ScanRequest");
1264
1265     *http_code = 200;
1266     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1267     if (srw_res->num_diagnostics == 0 && assoc->init)
1268     {
1269         int step_size = 0;
1270         struct scan_entry *save_entries;
1271
1272         bend_scan_rr *bsrr = (bend_scan_rr *)
1273             odr_malloc(assoc->encode, sizeof(*bsrr));
1274         bsrr->num_bases = 1;
1275         bsrr->basenames = &srw_req->database;
1276
1277         bsrr->num_entries = srw_req->maximumTerms ?
1278             odr_int_to_int(*srw_req->maximumTerms) : 10;
1279         bsrr->term_position = srw_req->responsePosition ?
1280             odr_int_to_int(*srw_req->responsePosition) : 1;
1281
1282         bsrr->errcode = 0;
1283         bsrr->errstring = 0;
1284         bsrr->referenceId = 0;
1285         bsrr->stream = assoc->encode;
1286         bsrr->print = assoc->print;
1287         bsrr->step_size = &step_size;
1288         bsrr->entries = 0;
1289         bsrr->setname = 0;
1290
1291         if (bsrr->num_entries > 0)
1292         {
1293             int i;
1294             bsrr->entries = (struct scan_entry *)
1295                 odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
1296                            bsrr->num_entries);
1297             for (i = 0; i<bsrr->num_entries; i++)
1298             {
1299                 bsrr->entries[i].term = 0;
1300                 bsrr->entries[i].occurrences = 0;
1301                 bsrr->entries[i].errcode = 0;
1302                 bsrr->entries[i].errstring = 0;
1303                 bsrr->entries[i].display_term = 0;
1304             }
1305         }
1306         save_entries = bsrr->entries;  /* save it so we can compare later */
1307
1308         if (srw_req->query_type == Z_SRW_query_type_pqf &&
1309             assoc->init->bend_scan)
1310         {
1311             YAZ_PQF_Parser pqf_parser = yaz_pqf_create();
1312
1313             bsrr->term = yaz_pqf_scan(pqf_parser, assoc->decode,
1314                                       &bsrr->attributeset,
1315                                       srw_req->scanClause.pqf);
1316             yaz_pqf_destroy(pqf_parser);
1317             bsrr->scanClause = 0;
1318             ((int (*)(void *, bend_scan_rr *))
1319              (*assoc->init->bend_scan))(assoc->backend, bsrr);
1320         }
1321         else if (srw_req->query_type == Z_SRW_query_type_cql
1322                  && assoc->init->bend_scan && assoc->server
1323                  && assoc->server->cql_transform)
1324         {
1325             int srw_error;
1326             bsrr->scanClause = 0;
1327             bsrr->attributeset = 0;
1328             bsrr->term = (Z_AttributesPlusTerm *)
1329                 odr_malloc(assoc->decode, sizeof(*bsrr->term));
1330             srw_error = cql2pqf_scan(assoc->encode,
1331                                      srw_req->scanClause.cql,
1332                                      assoc->server->cql_transform,
1333                                      bsrr->term);
1334             if (srw_error)
1335                 yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1336                                        &srw_res->num_diagnostics,
1337                                        srw_error, 0);
1338             else
1339             {
1340                 ((int (*)(void *, bend_scan_rr *))
1341                  (*assoc->init->bend_scan))(assoc->backend, bsrr);
1342             }
1343         }
1344         else if (srw_req->query_type == Z_SRW_query_type_cql
1345                  && assoc->init->bend_srw_scan)
1346         {
1347             bsrr->term = 0;
1348             bsrr->attributeset = 0;
1349             bsrr->scanClause = srw_req->scanClause.cql;
1350             ((int (*)(void *, bend_scan_rr *))
1351              (*assoc->init->bend_srw_scan))(assoc->backend, bsrr);
1352         }
1353         else
1354         {
1355             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1356                                    &srw_res->num_diagnostics,
1357                                    YAZ_SRW_UNSUPP_OPERATION, "scan");
1358         }
1359         if (bsrr->errcode)
1360         {
1361             int srw_error;
1362             if (bsrr->errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
1363             {
1364                 *http_code = 404;
1365                 return;
1366             }
1367             srw_error = yaz_diag_bib1_to_srw(bsrr->errcode);
1368
1369             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1370                                    &srw_res->num_diagnostics,
1371                                    srw_error, bsrr->errstring);
1372         }
1373         else if (srw_res->num_diagnostics == 0 && bsrr->num_entries)
1374         {
1375             int i;
1376             srw_res->terms = (Z_SRW_scanTerm*)
1377                 odr_malloc(assoc->encode, sizeof(*srw_res->terms) *
1378                            bsrr->num_entries);
1379
1380             srw_res->num_terms =  bsrr->num_entries;
1381             for (i = 0; i<bsrr->num_entries; i++)
1382             {
1383                 Z_SRW_scanTerm *t = srw_res->terms + i;
1384                 t->value = odr_strdup(assoc->encode, bsrr->entries[i].term);
1385                 t->numberOfRecords =
1386                     odr_intdup(assoc->encode, bsrr->entries[i].occurrences);
1387                 t->displayTerm = 0;
1388                 if (save_entries == bsrr->entries &&
1389                     bsrr->entries[i].display_term)
1390                 {
1391                     /* the entries was _not_ set by the handler. So it's
1392                        safe to test for new member display_term. It is
1393                        NULL'ed by us.
1394                     */
1395                     t->displayTerm = odr_strdup(assoc->encode,
1396                                                 bsrr->entries[i].display_term);
1397                 }
1398                 t->whereInList = 0;
1399             }
1400         }
1401     }
1402     if (log_request)
1403     {
1404         WRBUF wr = wrbuf_alloc();
1405         const char *querytype = 0;
1406         const char *querystr = 0;
1407
1408         switch(srw_req->query_type)
1409         {
1410         case Z_SRW_query_type_pqf:
1411             querytype = "PQF";
1412             querystr = srw_req->scanClause.pqf;
1413             break;
1414         case Z_SRW_query_type_cql:
1415             querytype = "CQL";
1416             querystr = srw_req->scanClause.cql;
1417             break;
1418         default:
1419             querytype = "UNKNOWN";
1420             querystr = "";
1421         }
1422
1423         wrbuf_printf(wr, "SRWScan %s ", srw_req->database);
1424
1425         if (srw_res->num_diagnostics)
1426             wrbuf_printf(wr, "ERROR %s - ", srw_res->diagnostics[0].uri);
1427         else if (srw_res->num_terms)
1428             wrbuf_printf(wr, "OK %d - ", srw_res->num_terms);
1429         else
1430             wrbuf_printf(wr, "OK - - ");
1431
1432         wrbuf_printf(wr, ODR_INT_PRINTF "+" ODR_INT_PRINTF " ",
1433                      (srw_req->responsePosition ?
1434                       *srw_req->responsePosition : 1),
1435                      (srw_req->maximumTerms ?
1436                       *srw_req->maximumTerms : 1));
1437         /* there is no step size in SRU/W ??? */
1438         wrbuf_printf(wr, "%s: %s ", querytype, querystr);
1439         yaz_log(log_request, "%s ", wrbuf_cstr(wr) );
1440         wrbuf_destroy(wr);
1441     }
1442
1443 }
1444
1445 static void srw_bend_update(association *assoc,
1446                             Z_SRW_PDU *sr,
1447                             Z_SRW_updateResponse *srw_res,
1448                             int *http_code)
1449 {
1450     Z_SRW_updateRequest *srw_req = sr->u.update_request;
1451     yaz_log(log_session, "SRWUpdate action=%s", srw_req->operation);
1452     yaz_log(YLOG_DEBUG, "num_diag = %d", srw_res->num_diagnostics );
1453     *http_code = 404;
1454     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1455     if (assoc->init)
1456     {
1457         bend_update_rr rr;
1458         Z_SRW_extra_record *extra = srw_req->extra_record;
1459
1460         rr.stream = assoc->encode;
1461         rr.print = assoc->print;
1462         rr.num_bases = 1;
1463         rr.basenames = &srw_req->database;
1464         rr.operation = srw_req->operation;
1465         rr.operation_status = "failed";
1466         rr.record_id = 0;
1467         rr.record_versions = 0;
1468         rr.num_versions = 0;
1469         rr.record_packing = "string";
1470         rr.record_schema = 0;
1471         rr.record_data = 0;
1472         rr.extra_record_data = 0;
1473         rr.extra_request_data = 0;
1474         rr.extra_response_data = 0;
1475         rr.uri = 0;
1476         rr.message = 0;
1477         rr.details = 0;
1478
1479         *http_code = 200;
1480         if (rr.operation == 0)
1481         {
1482             yaz_add_sru_update_diagnostic(
1483                 assoc->encode, &srw_res->diagnostics,
1484                 &srw_res->num_diagnostics,
1485                 YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1486                 "action" );
1487             return;
1488         }
1489         yaz_log(YLOG_DEBUG, "basename = %s", rr.basenames[0] );
1490         yaz_log(YLOG_DEBUG, "Operation = %s", rr.operation );
1491         if (!strcmp( rr.operation, "delete"))
1492         {
1493             if (srw_req->record && !srw_req->record->recordSchema)
1494             {
1495                 rr.record_schema = odr_strdup(
1496                     assoc->encode,
1497                     srw_req->record->recordSchema);
1498             }
1499             if (srw_req->record)
1500             {
1501                 rr.record_data = odr_strdupn(
1502                     assoc->encode,
1503                     srw_req->record->recordData_buf,
1504                     srw_req->record->recordData_len );
1505             }
1506             if (extra && extra->extraRecordData_len)
1507             {
1508                 rr.extra_record_data = odr_strdupn(
1509                     assoc->encode,
1510                     extra->extraRecordData_buf,
1511                     extra->extraRecordData_len );
1512             }
1513             if (srw_req->recordId)
1514                 rr.record_id = srw_req->recordId;
1515             else if (extra && extra->recordIdentifier)
1516                 rr.record_id = extra->recordIdentifier;
1517         }
1518         else if (!strcmp(rr.operation, "replace"))
1519         {
1520             if (srw_req->recordId)
1521                 rr.record_id = srw_req->recordId;
1522             else if (extra && extra->recordIdentifier)
1523                 rr.record_id = extra->recordIdentifier;
1524             else
1525             {
1526                 yaz_add_sru_update_diagnostic(
1527                     assoc->encode, &srw_res->diagnostics,
1528                     &srw_res->num_diagnostics,
1529                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1530                     "recordIdentifier");
1531             }
1532             if (!srw_req->record)
1533             {
1534                 yaz_add_sru_update_diagnostic(
1535                     assoc->encode, &srw_res->diagnostics,
1536                     &srw_res->num_diagnostics,
1537                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1538                     "record");
1539             }
1540             else
1541             {
1542                 if (srw_req->record->recordSchema)
1543                     rr.record_schema = odr_strdup(
1544                         assoc->encode, srw_req->record->recordSchema);
1545                 if (srw_req->record->recordData_len )
1546                 {
1547                     rr.record_data = odr_strdupn(assoc->encode,
1548                                                  srw_req->record->recordData_buf,
1549                                                  srw_req->record->recordData_len );
1550                 }
1551                 else
1552                 {
1553                     yaz_add_sru_update_diagnostic(
1554                         assoc->encode, &srw_res->diagnostics,
1555                         &srw_res->num_diagnostics,
1556                         YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1557                         "recordData" );
1558                 }
1559             }
1560             if (extra && extra->extraRecordData_len)
1561             {
1562                 rr.extra_record_data = odr_strdupn(
1563                     assoc->encode,
1564                     extra->extraRecordData_buf,
1565                     extra->extraRecordData_len );
1566             }
1567         }
1568         else if (!strcmp(rr.operation, "insert"))
1569         {
1570             if (srw_req->recordId)
1571                 rr.record_id = srw_req->recordId;
1572             else if (extra)
1573                 rr.record_id = extra->recordIdentifier;
1574
1575             if (srw_req->record)
1576             {
1577                 if (srw_req->record->recordSchema)
1578                     rr.record_schema = odr_strdup(
1579                         assoc->encode, srw_req->record->recordSchema);
1580
1581                 if (srw_req->record->recordData_len)
1582                     rr.record_data = odr_strdupn(
1583                         assoc->encode,
1584                         srw_req->record->recordData_buf,
1585                         srw_req->record->recordData_len );
1586             }
1587             if (extra && extra->extraRecordData_len)
1588             {
1589                 rr.extra_record_data = odr_strdupn(
1590                     assoc->encode,
1591                     extra->extraRecordData_buf,
1592                     extra->extraRecordData_len );
1593             }
1594         }
1595         else
1596             yaz_add_sru_update_diagnostic(assoc->encode, &srw_res->diagnostics,
1597                                           &srw_res->num_diagnostics,
1598                                           YAZ_SRU_UPDATE_INVALID_ACTION,
1599                                           rr.operation );
1600
1601         if (srw_req->record)
1602         {
1603             const char *pack_str =
1604                 yaz_srw_pack_to_str(srw_req->record->recordPacking);
1605             if (pack_str)
1606                 rr.record_packing = odr_strdup(assoc->encode, pack_str);
1607         }
1608
1609         if (srw_req->num_recordVersions)
1610         {
1611             rr.record_versions = srw_req->recordVersions;
1612             rr.num_versions = srw_req->num_recordVersions;
1613         }
1614         if (srw_req->extraRequestData_len)
1615         {
1616             rr.extra_request_data = odr_strdupn(assoc->encode,
1617                                                 srw_req->extraRequestData_buf,
1618                                                 srw_req->extraRequestData_len );
1619         }
1620         if (srw_res->num_diagnostics == 0)
1621         {
1622             if ( assoc->init->bend_srw_update)
1623                 (*assoc->init->bend_srw_update)(assoc->backend, &rr);
1624             else
1625                 yaz_add_sru_update_diagnostic(
1626                     assoc->encode, &srw_res->diagnostics,
1627                     &srw_res->num_diagnostics,
1628                     YAZ_SRU_UPDATE_UNSPECIFIED_DATABASE_ERROR,
1629                     "No Update backend handler");
1630         }
1631
1632         if (rr.uri)
1633             yaz_add_srw_diagnostic_uri(assoc->encode,
1634                                        &srw_res->diagnostics,
1635                                        &srw_res->num_diagnostics,
1636                                        rr.uri,
1637                                        rr.message,
1638                                        rr.details);
1639         srw_res->recordId = rr.record_id;
1640         srw_res->operationStatus = rr.operation_status;
1641         srw_res->recordVersions = rr.record_versions;
1642         srw_res->num_recordVersions = rr.num_versions;
1643         if (srw_res->extraResponseData_len)
1644         {
1645             srw_res->extraResponseData_buf = rr.extra_response_data;
1646             srw_res->extraResponseData_len = strlen(rr.extra_response_data);
1647         }
1648         if (srw_res->num_diagnostics == 0 && rr.record_data)
1649         {
1650             srw_res->record = yaz_srw_get_record(assoc->encode);
1651             srw_res->record->recordSchema = rr.record_schema;
1652             if (rr.record_packing)
1653             {
1654                 int pack = yaz_srw_str_to_pack(rr.record_packing);
1655
1656                 if (pack == -1)
1657                 {
1658                     pack = Z_SRW_recordPacking_string;
1659                     yaz_log(YLOG_WARN, "Back packing %s from backend",
1660                             rr.record_packing);
1661                 }
1662                 srw_res->record->recordPacking = pack;
1663             }
1664             srw_res->record->recordData_buf = rr.record_data;
1665             srw_res->record->recordData_len = strlen(rr.record_data);
1666             if (rr.extra_record_data)
1667             {
1668                 Z_SRW_extra_record *ex =
1669                     yaz_srw_get_extra_record(assoc->encode);
1670                 srw_res->extra_record = ex;
1671                 ex->extraRecordData_buf = rr.extra_record_data;
1672                 ex->extraRecordData_len = strlen(rr.extra_record_data);
1673             }
1674         }
1675     }
1676 }
1677
1678 /* check if path is OK (1); BAD (0) */
1679 static int check_path(const char *path)
1680 {
1681     if (*path != '/')
1682         return 0;
1683     if (strstr(path, ".."))
1684         return 0;
1685     return 1;
1686 }
1687
1688 static char *read_file(const char *fname, ODR o, size_t *sz)
1689 {
1690     char *buf;
1691     FILE *inf = fopen(fname, "rb");
1692     if (!inf)
1693         return 0;
1694
1695     fseek(inf, 0L, SEEK_END);
1696     *sz = ftell(inf);
1697     rewind(inf);
1698     buf = (char *) odr_malloc(o, *sz);
1699     if (fread(buf, 1, *sz, inf) != *sz)
1700         yaz_log(YLOG_WARN|YLOG_ERRNO, "short read %s", fname);
1701     fclose(inf);
1702     return buf;
1703 }
1704
1705 static void process_http_request(association *assoc, request *req)
1706 {
1707     Z_HTTP_Request *hreq = req->gdu_request->u.HTTP_Request;
1708     ODR o = assoc->encode;
1709     int r = 2;  /* 2=NOT TAKEN, 1=TAKEN, 0=SOAP TAKEN */
1710     Z_SRW_PDU *sr = 0;
1711     Z_SOAP *soap_package = 0;
1712     Z_GDU *p = 0;
1713     char *charset = 0;
1714     Z_HTTP_Response *hres = 0;
1715     int keepalive = 1;
1716     const char *stylesheet = 0; /* for now .. set later */
1717     Z_SRW_diagnostic *diagnostic = 0;
1718     int num_diagnostic = 0;
1719     const char *host = z_HTTP_header_lookup(hreq->headers, "Host");
1720
1721     yaz_log(log_request, "%s %s HTTP/%s", hreq->method, hreq->path, hreq->version);
1722     if (!control_association(assoc, host, 0))
1723     {
1724         p = z_get_HTTP_Response(o, 404);
1725         r = 1;
1726     }
1727     if (r == 2 && assoc->server && assoc->server->docpath
1728         && hreq->path[0] == '/'
1729         &&
1730         /* check if path is a proper prefix of documentroot */
1731         strncmp(hreq->path+1, assoc->server->docpath,
1732                 strlen(assoc->server->docpath))
1733         == 0)
1734     {
1735         if (!check_path(hreq->path))
1736         {
1737             yaz_log(YLOG_LOG, "File %s access forbidden", hreq->path+1);
1738             p = z_get_HTTP_Response(o, 404);
1739         }
1740         else
1741         {
1742             size_t content_size = 0;
1743             char *content_buf = read_file(hreq->path+1, o, &content_size);
1744             if (!content_buf)
1745             {
1746                 yaz_log(YLOG_LOG, "File %s not found", hreq->path+1);
1747                 p = z_get_HTTP_Response(o, 404);
1748             }
1749             else
1750             {
1751                 const char *ctype = 0;
1752                 yaz_mime_types types = yaz_mime_types_create();
1753
1754                 yaz_mime_types_add(types, "xsl", "application/xml");
1755                 yaz_mime_types_add(types, "xml", "application/xml");
1756                 yaz_mime_types_add(types, "css", "text/css");
1757                 yaz_mime_types_add(types, "html", "text/html");
1758                 yaz_mime_types_add(types, "htm", "text/html");
1759                 yaz_mime_types_add(types, "txt", "text/plain");
1760                 yaz_mime_types_add(types, "js", "application/x-javascript");
1761
1762                 yaz_mime_types_add(types, "gif", "image/gif");
1763                 yaz_mime_types_add(types, "png", "image/png");
1764                 yaz_mime_types_add(types, "jpg", "image/jpeg");
1765                 yaz_mime_types_add(types, "jpeg", "image/jpeg");
1766
1767                 ctype = yaz_mime_lookup_fname(types, hreq->path);
1768                 if (!ctype)
1769                 {
1770                     yaz_log(YLOG_LOG, "No mime type for %s", hreq->path+1);
1771                     p = z_get_HTTP_Response(o, 404);
1772                 }
1773                 else
1774                 {
1775                     p = z_get_HTTP_Response(o, 200);
1776                     hres = p->u.HTTP_Response;
1777                     hres->content_buf = content_buf;
1778                     hres->content_len = content_size;
1779                     z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1780                 }
1781                 yaz_mime_types_destroy(types);
1782             }
1783         }
1784         r = 1;
1785     }
1786
1787     if (r == 2)
1788     {
1789         r = yaz_srw_decode(hreq, &sr, &soap_package, assoc->decode, &charset);
1790         yaz_log(YLOG_DEBUG, "yaz_srw_decode returned %d", r);
1791     }
1792     if (r == 2)  /* not taken */
1793     {
1794         r = yaz_sru_decode(hreq, &sr, &soap_package, assoc->decode, &charset,
1795                            &diagnostic, &num_diagnostic);
1796         yaz_log(YLOG_DEBUG, "yaz_sru_decode returned %d", r);
1797     }
1798     if (r == 0)  /* decode SRW/SRU OK .. */
1799     {
1800         int http_code = 200;
1801         if (sr->which == Z_SRW_searchRetrieve_request)
1802         {
1803             Z_SRW_PDU *res =
1804                 yaz_srw_get_pdu(assoc->encode, Z_SRW_searchRetrieve_response,
1805                                 sr->srw_version);
1806             stylesheet = sr->u.request->stylesheet;
1807             if (num_diagnostic)
1808             {
1809                 res->u.response->diagnostics = diagnostic;
1810                 res->u.response->num_diagnostics = num_diagnostic;
1811             }
1812             else
1813             {
1814                 srw_bend_search(assoc, sr, res, &http_code);
1815             }
1816             if (http_code == 200)
1817                 soap_package->u.generic->p = res;
1818         }
1819         else if (sr->which == Z_SRW_explain_request)
1820         {
1821             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_explain_response,
1822                                              sr->srw_version);
1823             stylesheet = sr->u.explain_request->stylesheet;
1824             if (num_diagnostic)
1825             {
1826                 res->u.explain_response->diagnostics = diagnostic;
1827                 res->u.explain_response->num_diagnostics = num_diagnostic;
1828             }
1829             srw_bend_explain(assoc, sr, res->u.explain_response, &http_code);
1830             if (http_code == 200)
1831                 soap_package->u.generic->p = res;
1832         }
1833         else if (sr->which == Z_SRW_scan_request)
1834         {
1835             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_scan_response,
1836                                              sr->srw_version);
1837             stylesheet = sr->u.scan_request->stylesheet;
1838             if (num_diagnostic)
1839             {
1840                 res->u.scan_response->diagnostics = diagnostic;
1841                 res->u.scan_response->num_diagnostics = num_diagnostic;
1842             }
1843             srw_bend_scan(assoc, sr, res->u.scan_response, &http_code);
1844             if (http_code == 200)
1845                 soap_package->u.generic->p = res;
1846         }
1847         else if (sr->which == Z_SRW_update_request)
1848         {
1849             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_update_response,
1850                                              sr->srw_version);
1851             yaz_log(YLOG_DEBUG, "handling SRW UpdateRequest");
1852             if (num_diagnostic)
1853             {
1854                 res->u.update_response->diagnostics = diagnostic;
1855                 res->u.update_response->num_diagnostics = num_diagnostic;
1856             }
1857             yaz_log(YLOG_DEBUG, "num_diag = %d", res->u.update_response->num_diagnostics );
1858             srw_bend_update(assoc, sr, res->u.update_response, &http_code);
1859             if (http_code == 200)
1860                 soap_package->u.generic->p = res;
1861         }
1862         else
1863         {
1864             yaz_log(log_request, "SOAP ERROR");
1865             /* FIXME - what error, what query */
1866             http_code = 500;
1867             z_soap_error(assoc->encode, soap_package,
1868                          "SOAP-ENV:Client", "Bad method", 0);
1869         }
1870         if (http_code == 200 || http_code == 500)
1871         {
1872             static Z_SOAP_Handler soap_handlers[4] = {
1873 #if YAZ_HAVE_XML2
1874                 {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
1875                 {YAZ_XMLNS_SRU_v1_0, 0, (Z_SOAP_fun) yaz_srw_codec},
1876                 {YAZ_XMLNS_UPDATE_v0_9, 0, (Z_SOAP_fun) yaz_ucp_codec},
1877 #endif
1878                 {0, 0, 0}
1879             };
1880             char ctype[80];
1881             p = z_get_HTTP_Response(o, 200);
1882             hres = p->u.HTTP_Response;
1883
1884             if (!stylesheet && assoc->server)
1885                 stylesheet = assoc->server->stylesheet;
1886
1887             /* empty stylesheet means NO stylesheet */
1888             if (stylesheet && *stylesheet == '\0')
1889                 stylesheet = 0;
1890
1891             z_soap_codec_enc_xsl(assoc->encode, &soap_package,
1892                                  &hres->content_buf, &hres->content_len,
1893                                  soap_handlers, charset, stylesheet);
1894             hres->code = http_code;
1895
1896             strcpy(ctype, "text/xml");
1897             if (charset && strlen(charset) < sizeof(ctype)-30)
1898             {
1899                 strcat(ctype, "; charset=");
1900                 strcat(ctype, charset);
1901             }
1902             z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1903         }
1904         else
1905             p = z_get_HTTP_Response(o, http_code);
1906     }
1907
1908     if (p == 0)
1909         p = z_get_HTTP_Response(o, 500);
1910     hres = p->u.HTTP_Response;
1911     if (!strcmp(hreq->version, "1.0"))
1912     {
1913         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1914         if (v && !strcmp(v, "Keep-Alive"))
1915             keepalive = 1;
1916         else
1917             keepalive = 0;
1918         hres->version = "1.0";
1919     }
1920     else
1921     {
1922         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1923         if (v && !strcmp(v, "close"))
1924             keepalive = 0;
1925         else
1926             keepalive = 1;
1927         hres->version = "1.1";
1928     }
1929     if (!keepalive || !assoc->last_control->keepalive)
1930     {
1931         z_HTTP_header_add(o, &hres->headers, "Connection", "close");
1932         assoc->state = ASSOC_DEAD;
1933         assoc->cs_get_mask = 0;
1934     }
1935     else
1936     {
1937         int t;
1938         const char *alive = z_HTTP_header_lookup(hreq->headers, "Keep-Alive");
1939
1940         if (alive && yaz_isdigit(*(const unsigned char *) alive))
1941             t = atoi(alive);
1942         else
1943             t = 15;
1944         if (t < 0 || t > 3600)
1945             t = 3600;
1946         iochan_settimeout(assoc->client_chan,t);
1947         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
1948     }
1949     process_gdu_response(assoc, req, p);
1950 }
1951
1952 static void process_gdu_request(association *assoc, request *req)
1953 {
1954     if (req->gdu_request->which == Z_GDU_Z3950)
1955     {
1956         char *msg = 0;
1957         req->apdu_request = req->gdu_request->u.z3950;
1958         if (process_z_request(assoc, req, &msg) < 0)
1959             do_close_req(assoc, Z_Close_systemProblem, msg, req);
1960     }
1961     else if (req->gdu_request->which == Z_GDU_HTTP_Request)
1962         process_http_request(assoc, req);
1963     else
1964     {
1965         do_close_req(assoc, Z_Close_systemProblem, "bad protocol packet", req);
1966     }
1967 }
1968
1969 /*
1970  * Initiate request processing.
1971  */
1972 static int process_z_request(association *assoc, request *req, char **msg)
1973 {
1974     Z_APDU *res;
1975     int retval;
1976
1977     *msg = "Unknown Error";
1978     assert(req && req->state == REQUEST_IDLE);
1979     if (req->apdu_request->which != Z_APDU_initRequest && !assoc->init)
1980     {
1981         *msg = "Missing InitRequest";
1982         return -1;
1983     }
1984     switch (req->apdu_request->which)
1985     {
1986     case Z_APDU_initRequest:
1987         res = process_initRequest(assoc, req); break;
1988     case Z_APDU_searchRequest:
1989         res = process_searchRequest(assoc, req); break;
1990     case Z_APDU_presentRequest:
1991         res = process_presentRequest(assoc, req); break;
1992     case Z_APDU_scanRequest:
1993         if (assoc->init->bend_scan)
1994             res = process_scanRequest(assoc, req);
1995         else
1996         {
1997             *msg = "Cannot handle Scan APDU";
1998             return -1;
1999         }
2000         break;
2001     case Z_APDU_extendedServicesRequest:
2002         if (assoc->init->bend_esrequest)
2003             res = process_ESRequest(assoc, req);
2004         else
2005         {
2006             *msg = "Cannot handle Extended Services APDU";
2007             return -1;
2008         }
2009         break;
2010     case Z_APDU_sortRequest:
2011         if (assoc->init->bend_sort)
2012             res = process_sortRequest(assoc, req);
2013         else
2014         {
2015             *msg = "Cannot handle Sort APDU";
2016             return -1;
2017         }
2018         break;
2019     case Z_APDU_close:
2020         process_close(assoc, req);
2021         return 0;
2022     case Z_APDU_deleteResultSetRequest:
2023         if (assoc->init->bend_delete)
2024             res = process_deleteRequest(assoc, req);
2025         else
2026         {
2027             *msg = "Cannot handle Delete APDU";
2028             return -1;
2029         }
2030         break;
2031     case Z_APDU_segmentRequest:
2032         if (assoc->init->bend_segment)
2033         {
2034             res = process_segmentRequest(assoc, req);
2035         }
2036         else
2037         {
2038             *msg = "Cannot handle Segment APDU";
2039             return -1;
2040         }
2041         break;
2042     case Z_APDU_triggerResourceControlRequest:
2043         return 0;
2044     default:
2045         *msg = "Bad APDU received";
2046         return -1;
2047     }
2048     if (res)
2049     {
2050         yaz_log(YLOG_DEBUG, "  result immediately available");
2051         retval = process_z_response(assoc, req, res);
2052     }
2053     else
2054     {
2055         yaz_log(YLOG_DEBUG, "  result unavailable");
2056         retval = -1;
2057     }
2058     return retval;
2059 }
2060
2061 /*
2062  * Encode response, and transfer the request structure to the outgoing queue.
2063  */
2064 static int process_gdu_response(association *assoc, request *req, Z_GDU *res)
2065 {
2066     odr_setbuf(assoc->encode, req->response, req->size_response, 1);
2067
2068     if (assoc->print)
2069     {
2070         if (!z_GDU(assoc->print, &res, 0, 0))
2071             yaz_log(YLOG_WARN, "ODR print error: %s",
2072                 odr_errmsg(odr_geterror(assoc->print)));
2073         odr_reset(assoc->print);
2074     }
2075     if (!z_GDU(assoc->encode, &res, 0, 0))
2076     {
2077         yaz_log(YLOG_WARN, "ODR error when encoding PDU: %s [element %s]",
2078                 odr_errmsg(odr_geterror(assoc->decode)),
2079                 odr_getelement(assoc->decode));
2080         return -1;
2081     }
2082     req->response = odr_getbuf(assoc->encode, &req->len_response,
2083         &req->size_response);
2084     odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
2085     odr_reset(assoc->encode);
2086     req->state = REQUEST_IDLE;
2087     request_enq(&assoc->outgoing, req);
2088     /* turn the work over to the ir_session handler */
2089     iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
2090     assoc->cs_put_mask = EVENT_OUTPUT;
2091     /* Is there more work to be done? give that to the input handler too */
2092     for (;;)
2093     {
2094         req = request_head(&assoc->incoming);
2095         if (req && req->state == REQUEST_IDLE)
2096         {
2097             request_deq(&assoc->incoming);
2098             process_gdu_request(assoc, req);
2099         }
2100         else
2101             break;
2102     }
2103     return 0;
2104 }
2105
2106 /*
2107  * Encode response, and transfer the request structure to the outgoing queue.
2108  */
2109 static int process_z_response(association *assoc, request *req, Z_APDU *res)
2110 {
2111     Z_GDU *gres = (Z_GDU *) odr_malloc(assoc->encode, sizeof(*gres));
2112     gres->which = Z_GDU_Z3950;
2113     gres->u.z3950 = res;
2114
2115     return process_gdu_response(assoc, req, gres);
2116 }
2117
2118 static char *get_vhost(Z_OtherInformation *otherInfo)
2119 {
2120     return yaz_oi_get_string_oid(&otherInfo, yaz_oid_userinfo_proxy, 1, 0);
2121 }
2122
2123 /*
2124  * Handle init request.
2125  * At the moment, we don't check the options
2126  * anywhere else in the code - we just try not to do anything that would
2127  * break a naive client. We'll toss 'em into the association block when
2128  * we need them there.
2129  */
2130 static Z_APDU *process_initRequest(association *assoc, request *reqb)
2131 {
2132     Z_InitRequest *req = reqb->apdu_request->u.initRequest;
2133     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
2134     Z_InitResponse *resp = apdu->u.initResponse;
2135     bend_initresult *binitres;
2136     char options[140];
2137     statserv_options_block *cb = 0;  /* by default no control for backend */
2138
2139     if (control_association(assoc, get_vhost(req->otherInfo), 1))
2140         cb = statserv_getcontrol();  /* got control block for backend */
2141
2142     if (cb && assoc->backend)
2143         (*cb->bend_close)(assoc->backend);
2144
2145     yaz_log(log_requestdetail, "Got initRequest");
2146     if (req->implementationId)
2147         yaz_log(log_requestdetail, "Id:        %s",
2148                 req->implementationId);
2149     if (req->implementationName)
2150         yaz_log(log_requestdetail, "Name:      %s",
2151                 req->implementationName);
2152     if (req->implementationVersion)
2153         yaz_log(log_requestdetail, "Version:   %s",
2154                 req->implementationVersion);
2155
2156     assoc_init_reset(assoc);
2157
2158     assoc->init->auth = req->idAuthentication;
2159     assoc->init->referenceId = req->referenceId;
2160
2161     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2162     {
2163         Z_CharSetandLanguageNegotiation *negotiation =
2164             yaz_get_charneg_record (req->otherInfo);
2165         if (negotiation &&
2166             negotiation->which == Z_CharSetandLanguageNegotiation_proposal)
2167             assoc->init->charneg_request = negotiation;
2168     }
2169
2170     /* by default named_result_sets is 0 .. Enable it if client asks for it. */
2171     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
2172         assoc->init->named_result_sets = 1;
2173
2174     assoc->backend = 0;
2175     if (cb)
2176     {
2177         if (req->implementationVersion)
2178             yaz_log(log_requestdetail, "Config:    %s",
2179                     cb->configname);
2180
2181         iochan_settimeout(assoc->client_chan, cb->idle_timeout);
2182
2183         /* we have a backend control block, so call that init function */
2184         if (!(binitres = (*cb->bend_init)(assoc->init)))
2185         {
2186             yaz_log(YLOG_WARN, "Bad response from backend.");
2187             return 0;
2188         }
2189         assoc->backend = binitres->handle;
2190     }
2191     else
2192     {
2193         /* no backend. return error */
2194         binitres = (bend_initresult *)
2195             odr_malloc(assoc->encode, sizeof(*binitres));
2196         binitres->errstring = 0;
2197         binitres->errcode = YAZ_BIB1_PERMANENT_SYSTEM_ERROR;
2198         iochan_settimeout(assoc->client_chan, 10);
2199     }
2200     if ((assoc->init->bend_sort))
2201         yaz_log(YLOG_DEBUG, "Sort handler installed");
2202     if ((assoc->init->bend_search))
2203         yaz_log(YLOG_DEBUG, "Search handler installed");
2204     if ((assoc->init->bend_present))
2205         yaz_log(YLOG_DEBUG, "Present handler installed");
2206     if ((assoc->init->bend_esrequest))
2207         yaz_log(YLOG_DEBUG, "ESRequest handler installed");
2208     if ((assoc->init->bend_delete))
2209         yaz_log(YLOG_DEBUG, "Delete handler installed");
2210     if ((assoc->init->bend_scan))
2211         yaz_log(YLOG_DEBUG, "Scan handler installed");
2212     if ((assoc->init->bend_segment))
2213         yaz_log(YLOG_DEBUG, "Segment handler installed");
2214
2215     resp->referenceId = req->referenceId;
2216     *options = '\0';
2217     /* let's tell the client what we can do */
2218     if (ODR_MASK_GET(req->options, Z_Options_search))
2219     {
2220         ODR_MASK_SET(resp->options, Z_Options_search);
2221         strcat(options, "srch");
2222     }
2223     if (ODR_MASK_GET(req->options, Z_Options_present))
2224     {
2225         ODR_MASK_SET(resp->options, Z_Options_present);
2226         strcat(options, " prst");
2227     }
2228     if (ODR_MASK_GET(req->options, Z_Options_delSet) &&
2229         assoc->init->bend_delete)
2230     {
2231         ODR_MASK_SET(resp->options, Z_Options_delSet);
2232         strcat(options, " del");
2233     }
2234     if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
2235         assoc->init->bend_esrequest)
2236     {
2237         ODR_MASK_SET(resp->options, Z_Options_extendedServices);
2238         strcat(options, " extendedServices");
2239     }
2240     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets)
2241         && assoc->init->named_result_sets)
2242     {
2243         ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
2244         strcat(options, " namedresults");
2245     }
2246     if (ODR_MASK_GET(req->options, Z_Options_scan) && assoc->init->bend_scan)
2247     {
2248         ODR_MASK_SET(resp->options, Z_Options_scan);
2249         strcat(options, " scan");
2250     }
2251     if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
2252     {
2253         ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
2254         strcat(options, " concurrop");
2255     }
2256     if (ODR_MASK_GET(req->options, Z_Options_sort) && assoc->init->bend_sort)
2257     {
2258         ODR_MASK_SET(resp->options, Z_Options_sort);
2259         strcat(options, " sort");
2260     }
2261
2262     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2263     {
2264         Z_OtherInformationUnit *p0;
2265
2266         if (!assoc->init->charneg_response)
2267         {
2268             if (assoc->init->query_charset)
2269             {
2270                 assoc->init->charneg_response = yaz_set_response_charneg(
2271                     assoc->encode, assoc->init->query_charset, 0,
2272                     assoc->init->records_in_same_charset);
2273             }
2274             else
2275             {
2276                 yaz_log(YLOG_WARN, "default query_charset not defined by backend");
2277             }
2278         }
2279         if (assoc->init->charneg_response
2280             && (p0=yaz_oi_update(&resp->otherInfo, assoc->encode, NULL, 0, 0)))
2281         {
2282             p0->which = Z_OtherInfo_externallyDefinedInfo;
2283             p0->information.externallyDefinedInfo =
2284                 assoc->init->charneg_response;
2285             ODR_MASK_SET(resp->options, Z_Options_negotiationModel);
2286             strcat(options, " negotiation");
2287         }
2288     }
2289     if (ODR_MASK_GET(req->options, Z_Options_triggerResourceCtrl))
2290         ODR_MASK_SET(resp->options, Z_Options_triggerResourceCtrl);
2291
2292     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
2293     {
2294         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
2295         assoc->version = 1; /* 1 & 2 are equivalent */
2296     }
2297     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
2298     {
2299         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
2300         assoc->version = 2;
2301     }
2302     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
2303     {
2304         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
2305         assoc->version = 3;
2306     }
2307
2308     yaz_log(log_requestdetail, "Negotiated to v%d: %s", assoc->version, options);
2309
2310     if (*req->maximumRecordSize < assoc->maximumRecordSize)
2311         assoc->maximumRecordSize = odr_int_to_int(*req->maximumRecordSize);
2312
2313     if (*req->preferredMessageSize < assoc->preferredMessageSize)
2314         assoc->preferredMessageSize = odr_int_to_int(*req->preferredMessageSize);
2315
2316     resp->preferredMessageSize =
2317         odr_intdup(assoc->encode, assoc->preferredMessageSize);
2318     resp->maximumRecordSize =
2319         odr_intdup(assoc->encode, assoc->maximumRecordSize);
2320
2321     resp->implementationId = odr_prepend(assoc->encode,
2322                 assoc->init->implementation_id,
2323                 resp->implementationId);
2324
2325     resp->implementationName = odr_prepend(assoc->encode,
2326                 assoc->init->implementation_name,
2327                 odr_prepend(assoc->encode, "GFS", resp->implementationName));
2328
2329     if (binitres->errcode)
2330     {
2331         assoc->state = ASSOC_DEAD;
2332         resp->userInformationField =
2333             init_diagnostics(assoc->encode, binitres->errcode,
2334                              binitres->errstring);
2335         *resp->result = 0;
2336     }
2337     else
2338         assoc->state = ASSOC_UP;
2339
2340     if (log_request)
2341     {
2342         if (!req->idAuthentication)
2343             yaz_log(log_request, "Auth none");
2344         else if (req->idAuthentication->which == Z_IdAuthentication_open)
2345         {
2346             const char *open = req->idAuthentication->u.open;
2347             const char *slash = strchr(open, '/');
2348             int len;
2349             if (slash)
2350                 len = slash - open;
2351             else
2352                 len = strlen(open);
2353                 yaz_log(log_request, "Auth open %.*s", len, open);
2354         }
2355         else if (req->idAuthentication->which == Z_IdAuthentication_idPass)
2356         {
2357             const char *user = req->idAuthentication->u.idPass->userId;
2358             const char *group = req->idAuthentication->u.idPass->groupId;
2359             yaz_log(log_request, "Auth idPass %s %s",
2360                     user ? user : "-", group ? group : "-");
2361         }
2362         else if (req->idAuthentication->which
2363                  == Z_IdAuthentication_anonymous)
2364         {
2365             yaz_log(log_request, "Auth anonymous");
2366         }
2367         else
2368         {
2369             yaz_log(log_request, "Auth other");
2370         }
2371     }
2372     if (log_request)
2373     {
2374         WRBUF wr = wrbuf_alloc();
2375         wrbuf_printf(wr, "Init ");
2376         if (binitres->errcode)
2377             wrbuf_printf(wr, "ERROR %d", binitres->errcode);
2378         else
2379             wrbuf_printf(wr, "OK -");
2380         wrbuf_printf(wr, " ID:%s Name:%s Version:%s",
2381                      (req->implementationId ? req->implementationId :"-"),
2382                      (req->implementationName ?
2383                       req->implementationName : "-"),
2384                      (req->implementationVersion ?
2385                       req->implementationVersion : "-")
2386             );
2387         yaz_log(log_request, "%s", wrbuf_cstr(wr));
2388         wrbuf_destroy(wr);
2389     }
2390     return apdu;
2391 }
2392
2393 /*
2394  * Set the specified `errcode' and `errstring' into a UserInfo-1
2395  * external to be returned to the client in accordance with Z35.90
2396  * Implementor Agreement 5 (Returning diagnostics in an InitResponse):
2397  *      http://lcweb.loc.gov/z3950/agency/agree/initdiag.html
2398  */
2399 static Z_External *init_diagnostics(ODR odr, int error, const char *addinfo)
2400 {
2401     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2402         addinfo ? " -- " : "", addinfo ? addinfo : "");
2403     return zget_init_diagnostics(odr, error, addinfo);
2404 }
2405
2406 /*
2407  * nonsurrogate diagnostic record.
2408  */
2409 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
2410 {
2411     Z_Records *rec = (Z_Records *) odr_malloc(assoc->encode, sizeof(*rec));
2412
2413     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2414             addinfo ? " -- " : "", addinfo ? addinfo : "");
2415
2416     rec->which = Z_Records_NSD;
2417     rec->u.nonSurrogateDiagnostic = zget_DefaultDiagFormat(assoc->encode,
2418                                                            error, addinfo);
2419     return rec;
2420 }
2421
2422 /*
2423  * surrogate diagnostic.
2424  */
2425 static Z_NamePlusRecord *surrogatediagrec(association *assoc,
2426                                           const char *dbname,
2427                                           int error, const char *addinfo)
2428 {
2429     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2430             addinfo ? " -- " : "", addinfo ? addinfo : "");
2431     return zget_surrogateDiagRec(assoc->encode, dbname, error, addinfo);
2432 }
2433
2434 static Z_Records *pack_records(association *a, char *setname, Odr_int start,
2435                                Odr_int *num, Z_RecordComposition *comp,
2436                                Odr_int *next, Odr_int *pres,
2437                                Z_ReferenceId *referenceId,
2438                                Odr_oid *oid, int *errcode)
2439 {
2440     int recno, total_length = 0, dumped_records = 0;
2441     int toget = odr_int_to_int(*num);
2442     Z_Records *records =
2443         (Z_Records *) odr_malloc(a->encode, sizeof(*records));
2444     Z_NamePlusRecordList *reclist =
2445         (Z_NamePlusRecordList *) odr_malloc(a->encode, sizeof(*reclist));
2446
2447     records->which = Z_Records_DBOSD;
2448     records->u.databaseOrSurDiagnostics = reclist;
2449     reclist->num_records = 0;
2450
2451     if (toget < 0)
2452         return diagrec(a, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, 0);
2453     else if (toget == 0)
2454         reclist->records = odr_nullval();
2455     else
2456         reclist->records = (Z_NamePlusRecord **)
2457             odr_malloc(a->encode, sizeof(*reclist->records) * toget);
2458
2459     *pres = Z_PresentStatus_success;
2460     *num = 0;
2461     *next = 0;
2462
2463     yaz_log(log_requestdetail, "Request to pack " ODR_INT_PRINTF "+%d %s", start, toget, setname);
2464     yaz_log(log_requestdetail, "pms=%d, mrs=%d", a->preferredMessageSize,
2465         a->maximumRecordSize);
2466     for (recno = odr_int_to_int(start); reclist->num_records < toget; recno++)
2467     {
2468         bend_fetch_rr freq;
2469         Z_NamePlusRecord *thisrec;
2470         int this_length = 0;
2471         /*
2472          * we get the number of bytes allocated on the stream before any
2473          * allocation done by the backend - this should give us a reasonable
2474          * idea of the total size of the data so far.
2475          */
2476         total_length = odr_total(a->encode) - dumped_records;
2477         freq.errcode = 0;
2478         freq.errstring = 0;
2479         freq.basename = 0;
2480         freq.len = 0;
2481         freq.record = 0;
2482         freq.last_in_set = 0;
2483         freq.setname = setname;
2484         freq.surrogate_flag = 0;
2485         freq.number = recno;
2486         freq.comp = comp;
2487         freq.request_format = oid;
2488         freq.output_format = 0;
2489         freq.stream = a->encode;
2490         freq.print = a->print;
2491         freq.referenceId = referenceId;
2492         freq.schema = 0;
2493
2494         retrieve_fetch(a, &freq);
2495
2496         *next = freq.last_in_set ? 0 : recno + 1;
2497
2498         if (freq.errcode)
2499         {
2500             if (!freq.surrogate_flag) /* non-surrogate diagnostic i.e. global */
2501             {
2502                 char s[20];
2503                 *pres = Z_PresentStatus_failure;
2504                 /* for 'present request out of range',
2505                    set addinfo to record position if not set */
2506                 if (freq.errcode == YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE  &&
2507                                 freq.errstring == 0)
2508                 {
2509                     sprintf(s, "%d", recno);
2510                     freq.errstring = s;
2511                 }
2512                 if (errcode)
2513                     *errcode = freq.errcode;
2514                 return diagrec(a, freq.errcode, freq.errstring);
2515             }
2516             reclist->records[reclist->num_records] =
2517                 surrogatediagrec(a, freq.basename, freq.errcode,
2518                                  freq.errstring);
2519             reclist->num_records++;
2520             continue;
2521         }
2522         if (freq.record == 0)  /* no error and no record ? */
2523         {
2524             *pres = Z_PresentStatus_partial_4;
2525             *next = 0;   /* signal end-of-set and stop */
2526             break;
2527         }
2528         if (freq.len >= 0)
2529             this_length = freq.len;
2530         else
2531             this_length = odr_total(a->encode) - total_length - dumped_records;
2532         yaz_log(YLOG_DEBUG, "  fetched record, len=%d, total=%d dumped=%d",
2533             this_length, total_length, dumped_records);
2534         if (a->preferredMessageSize > 0 &&
2535                 this_length + total_length > a->preferredMessageSize)
2536         {
2537             /* record is small enough, really */
2538             if (this_length <= a->preferredMessageSize && recno > start)
2539             {
2540                 yaz_log(log_requestdetail, "  Dropped last normal-sized record");
2541                 *pres = Z_PresentStatus_partial_2;
2542                 if (*next > 0)
2543                     (*next)--;
2544                 break;
2545             }
2546             /* record can only be fetched by itself */
2547             if (this_length < a->maximumRecordSize)
2548             {
2549                 yaz_log(log_requestdetail, "  Record > prefmsgsz");
2550                 if (toget > 1)
2551                 {
2552                     yaz_log(YLOG_DEBUG, "  Dropped it");
2553                     reclist->records[reclist->num_records] =
2554                          surrogatediagrec(
2555                              a, freq.basename,
2556                              YAZ_BIB1_RECORD_EXCEEDS_PREFERRED_MESSAGE_SIZE, 0);
2557                     reclist->num_records++;
2558                     dumped_records += this_length;
2559                     continue;
2560                 }
2561             }
2562             else /* too big entirely */
2563             {
2564                 yaz_log(log_requestdetail, "Record > maxrcdsz "
2565                         "this=%d max=%d",
2566                         this_length, a->maximumRecordSize);
2567                 reclist->records[reclist->num_records] =
2568                     surrogatediagrec(
2569                         a, freq.basename,
2570                         YAZ_BIB1_RECORD_EXCEEDS_MAXIMUM_RECORD_SIZE, 0);
2571                 reclist->num_records++;
2572                 dumped_records += this_length;
2573                 continue;
2574             }
2575         }
2576
2577         if (!(thisrec = (Z_NamePlusRecord *)
2578               odr_malloc(a->encode, sizeof(*thisrec))))
2579             return 0;
2580         thisrec->databaseName = odr_strdup_null(a->encode, freq.basename);
2581         thisrec->which = Z_NamePlusRecord_databaseRecord;
2582
2583         if (!freq.output_format)
2584         {
2585             yaz_log(YLOG_WARN, "bend_fetch output_format not set");
2586             return 0;
2587         }
2588         thisrec->u.databaseRecord = z_ext_record_oid(
2589             a->encode, freq.output_format, freq.record, freq.len);
2590         if (!thisrec->u.databaseRecord)
2591             return 0;
2592         reclist->records[reclist->num_records] = thisrec;
2593         reclist->num_records++;
2594     }
2595     *num = reclist->num_records;
2596     return records;
2597 }
2598
2599 static Z_APDU *process_searchRequest(association *assoc, request *reqb)
2600 {
2601     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2602     bend_search_rr *bsrr =
2603         (bend_search_rr *)nmem_malloc(reqb->request_mem, sizeof(*bsrr));
2604
2605     yaz_log(log_requestdetail, "Got SearchRequest.");
2606     bsrr->association = assoc;
2607     bsrr->referenceId = req->referenceId;
2608     bsrr->srw_sortKeys = 0;
2609     bsrr->srw_setname = 0;
2610     bsrr->srw_setnameIdleTime = 0;
2611     bsrr->estimated_hit_count = 0;
2612     bsrr->partial_resultset = 0;
2613     bsrr->extra_args = 0;
2614     bsrr->extra_response_data = 0;
2615
2616     yaz_log(log_requestdetail, "ResultSet '%s'", req->resultSetName);
2617     if (req->databaseNames)
2618     {
2619         int i;
2620         for (i = 0; i < req->num_databaseNames; i++)
2621             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
2622     }
2623
2624     yaz_log_zquery_level(log_requestdetail,req->query);
2625
2626     if (assoc->init->bend_search)
2627     {
2628         bsrr->setname = req->resultSetName;
2629         bsrr->replace_set = *req->replaceIndicator;
2630         bsrr->num_bases = req->num_databaseNames;
2631         bsrr->basenames = req->databaseNames;
2632         bsrr->query = req->query;
2633         bsrr->stream = assoc->encode;
2634         nmem_transfer(odr_getmem(bsrr->stream), reqb->request_mem);
2635         bsrr->decode = assoc->decode;
2636         bsrr->print = assoc->print;
2637         bsrr->hits = 0;
2638         bsrr->errcode = 0;
2639         bsrr->errstring = NULL;
2640         bsrr->search_info = NULL;
2641         bsrr->search_input = req->otherInfo;
2642
2643         if (assoc->server && assoc->server->cql_transform
2644             && req->query->which == Z_Query_type_104
2645             && req->query->u.type_104->which == Z_External_CQL)
2646         {
2647             /* have a CQL query and a CQL to PQF transform .. */
2648             int srw_errcode =
2649                 cql2pqf(bsrr->stream, req->query->u.type_104->u.cql,
2650                         assoc->server->cql_transform, bsrr->query,
2651                         &bsrr->srw_sortKeys);
2652             if (srw_errcode)
2653                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2654         }
2655
2656         if (assoc->server && assoc->server->ccl_transform
2657             && req->query->which == Z_Query_type_2) /*CCL*/
2658         {
2659             /* have a CCL query and a CCL to PQF transform .. */
2660             int srw_errcode =
2661                 ccl2pqf(bsrr->stream, req->query->u.type_2,
2662                         assoc->server->ccl_transform, bsrr);
2663             if (srw_errcode)
2664                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2665         }
2666
2667         if (!bsrr->errcode)
2668             (assoc->init->bend_search)(assoc->backend, bsrr);
2669     }
2670     else
2671     {
2672         /* FIXME - make a diagnostic for it */
2673         yaz_log(YLOG_WARN,"Search not supported ?!?!");
2674     }
2675     return response_searchRequest(assoc, reqb, bsrr);
2676 }
2677
2678 /*
2679  * Prepare a searchresponse based on the backend results. We probably want
2680  * to look at making the fetching of records nonblocking as well, but
2681  * so far, we'll keep things simple.
2682  * If bsrt is null, that means we're called in response to a communications
2683  * event, and we'll have to get the response for ourselves.
2684  */
2685 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
2686                                       bend_search_rr *bsrt)
2687 {
2688     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2689     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2690     Z_SearchResponse *resp = (Z_SearchResponse *)
2691         odr_malloc(assoc->encode, sizeof(*resp));
2692     Odr_int *nulint = odr_intdup(assoc->encode, 0);
2693     Odr_int *next = odr_intdup(assoc->encode, 0);
2694     Odr_int *none = odr_intdup(assoc->encode, Z_SearchResponse_none);
2695     Odr_int returnedrecs = 0;
2696
2697     apdu->which = Z_APDU_searchResponse;
2698     apdu->u.searchResponse = resp;
2699     resp->referenceId = req->referenceId;
2700     resp->additionalSearchInfo = 0;
2701     resp->otherInfo = 0;
2702     if (!bsrt)
2703     {
2704         yaz_log(YLOG_FATAL, "Bad result from backend");
2705         return 0;
2706     }
2707     else if (bsrt->errcode)
2708     {
2709         resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
2710         resp->resultCount = nulint;
2711         resp->numberOfRecordsReturned = nulint;
2712         resp->nextResultSetPosition = nulint;
2713         resp->searchStatus = odr_booldup(assoc->encode, 0);
2714         resp->resultSetStatus = none;
2715         resp->presentStatus = 0;
2716     }
2717     else
2718     {
2719         bool_t *sr = odr_booldup(assoc->encode, 1);
2720         Odr_int *toget = odr_intdup(assoc->encode, 0);
2721         Z_RecordComposition comp, *compp = 0;
2722
2723         yaz_log(log_requestdetail, "resultCount: " ODR_INT_PRINTF, bsrt->hits);
2724
2725         resp->records = 0;
2726         resp->resultCount = &bsrt->hits;
2727
2728         comp.which = Z_RecordComp_simple;
2729         /* how many records does the user agent want, then? */
2730         if (bsrt->hits < 0)
2731             *toget = 0;
2732         else if (bsrt->hits <= *req->smallSetUpperBound)
2733         {
2734             *toget = bsrt->hits;
2735             if ((comp.u.simple = req->smallSetElementSetNames))
2736                 compp = &comp;
2737         }
2738         else if (bsrt->hits < *req->largeSetLowerBound)
2739         {
2740             *toget = *req->mediumSetPresentNumber;
2741             if (*toget > bsrt->hits)
2742                 *toget = bsrt->hits;
2743             if ((comp.u.simple = req->mediumSetElementSetNames))
2744                 compp = &comp;
2745         }
2746         else
2747             *toget = 0;
2748
2749         if (*toget && !resp->records)
2750         {
2751             Odr_int *presst = odr_intdup(assoc->encode, 0);
2752             /* Call bend_present if defined */
2753             if (assoc->init->bend_present)
2754             {
2755                 bend_present_rr *bprr = (bend_present_rr *)
2756                     nmem_malloc(reqb->request_mem, sizeof(*bprr));
2757                 bprr->setname = req->resultSetName;
2758                 bprr->start = 1;
2759                 bprr->number = odr_int_to_int(*toget);
2760                 bprr->format = req->preferredRecordSyntax;
2761                 bprr->comp = compp;
2762                 bprr->referenceId = req->referenceId;
2763                 bprr->stream = assoc->encode;
2764                 bprr->print = assoc->print;
2765                 bprr->association = assoc;
2766                 bprr->errcode = 0;
2767                 bprr->errstring = NULL;
2768                 (*assoc->init->bend_present)(assoc->backend, bprr);
2769
2770                 if (bprr->errcode)
2771                 {
2772                     resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2773                     *resp->presentStatus = Z_PresentStatus_failure;
2774                 }
2775             }
2776
2777             if (!resp->records)
2778                 resp->records = pack_records(
2779                     assoc, req->resultSetName, 1,
2780                     toget, compp, next, presst, req->referenceId,
2781                     req->preferredRecordSyntax, NULL);
2782             if (!resp->records)
2783                 return 0;
2784             resp->numberOfRecordsReturned = toget;
2785             returnedrecs = *toget;
2786             resp->presentStatus = presst;
2787         }
2788         else
2789         {
2790             if (*resp->resultCount)
2791                 *next = 1;
2792             resp->numberOfRecordsReturned = nulint;
2793             resp->presentStatus = 0;
2794         }
2795         resp->nextResultSetPosition = next;
2796         resp->searchStatus = sr;
2797         resp->resultSetStatus = 0;
2798         if (bsrt->estimated_hit_count)
2799         {
2800             resp->resultSetStatus = odr_intdup(assoc->encode,
2801                                                Z_SearchResponse_estimate);
2802         }
2803         else if (bsrt->partial_resultset)
2804         {
2805             resp->resultSetStatus = odr_intdup(assoc->encode,
2806                                                Z_SearchResponse_subset);
2807         }
2808     }
2809     resp->additionalSearchInfo = bsrt->search_info;
2810
2811     if (log_request)
2812     {
2813         int i;
2814         WRBUF wr = wrbuf_alloc();
2815
2816         for (i = 0 ; i < req->num_databaseNames; i++)
2817         {
2818             if (i)
2819                 wrbuf_printf(wr, "+");
2820             wrbuf_puts(wr, req->databaseNames[i]);
2821         }
2822         wrbuf_printf(wr, " ");
2823
2824         if (bsrt->errcode)
2825             wrbuf_printf(wr, "ERROR %d", bsrt->errcode);
2826         else
2827             wrbuf_printf(wr, "OK " ODR_INT_PRINTF, bsrt->hits);
2828         wrbuf_printf(wr, " %s 1+" ODR_INT_PRINTF " ",
2829                      req->resultSetName, returnedrecs);
2830         yaz_query_to_wrbuf(wr, req->query);
2831
2832         yaz_log(log_request, "Search %s", wrbuf_cstr(wr));
2833         wrbuf_destroy(wr);
2834     }
2835     return apdu;
2836 }
2837
2838 /*
2839  * Maybe we got a little over-friendly when we designed bend_fetch to
2840  * get only one record at a time. Some backends can optimise multiple-record
2841  * fetches, and at any rate, there is some overhead involved in
2842  * all that selecting and hopping around. Problem is, of course, that the
2843  * frontend can't know ahead of time how many records it'll need to
2844  * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
2845  * is downright lousy as a bulk data transfer protocol.
2846  *
2847  * To start with, we'll do the fetching of records from the backend
2848  * in one operation: To save some trips in and out of the event-handler,
2849  * and to simplify the interface to pack_records. At any rate, asynch
2850  * operation is more fun in operations that have an unpredictable execution
2851  * speed - which is normally more true for search than for present.
2852  */
2853 static Z_APDU *process_presentRequest(association *assoc, request *reqb)
2854 {
2855     Z_PresentRequest *req = reqb->apdu_request->u.presentRequest;
2856     Z_APDU *apdu;
2857     Z_PresentResponse *resp;
2858     Odr_int *next;
2859     Odr_int *num;
2860     int errcode = 0;
2861
2862     yaz_log(log_requestdetail, "Got PresentRequest.");
2863
2864     resp = (Z_PresentResponse *)odr_malloc(assoc->encode, sizeof(*resp));
2865     resp->records = 0;
2866     resp->presentStatus = odr_intdup(assoc->encode, 0);
2867     if (assoc->init->bend_present)
2868     {
2869         bend_present_rr *bprr = (bend_present_rr *)
2870             nmem_malloc(reqb->request_mem, sizeof(*bprr));
2871         bprr->setname = req->resultSetId;
2872         bprr->start = odr_int_to_int(*req->resultSetStartPoint);
2873         bprr->number = odr_int_to_int(*req->numberOfRecordsRequested);
2874         bprr->format = req->preferredRecordSyntax;
2875         bprr->comp = req->recordComposition;
2876         bprr->referenceId = req->referenceId;
2877         bprr->stream = assoc->encode;
2878         bprr->print = assoc->print;
2879         bprr->association = assoc;
2880         bprr->errcode = 0;
2881         bprr->errstring = NULL;
2882         (*assoc->init->bend_present)(assoc->backend, bprr);
2883
2884         if (bprr->errcode)
2885         {
2886             resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2887             *resp->presentStatus = Z_PresentStatus_failure;
2888             errcode = bprr->errcode;
2889         }
2890     }
2891     apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2892     next = odr_intdup(assoc->encode, 0);
2893     num = odr_intdup(assoc->encode, 0);
2894
2895     apdu->which = Z_APDU_presentResponse;
2896     apdu->u.presentResponse = resp;
2897     resp->referenceId = req->referenceId;
2898     resp->otherInfo = 0;
2899
2900     if (!resp->records)
2901     {
2902         *num = *req->numberOfRecordsRequested;
2903         resp->records =
2904             pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
2905                          num, req->recordComposition, next,
2906                          resp->presentStatus,
2907                          req->referenceId, req->preferredRecordSyntax,
2908                          &errcode);
2909     }
2910     if (log_request)
2911     {
2912         WRBUF wr = wrbuf_alloc();
2913         wrbuf_printf(wr, "Present ");
2914
2915         if (*resp->presentStatus == Z_PresentStatus_failure)
2916             wrbuf_printf(wr, "ERROR %d ", errcode);
2917         else if (*resp->presentStatus == Z_PresentStatus_success)
2918             wrbuf_printf(wr, "OK -  ");
2919         else
2920             wrbuf_printf(wr, "Partial " ODR_INT_PRINTF " - ",
2921                          *resp->presentStatus);
2922
2923         wrbuf_printf(wr, " %s " ODR_INT_PRINTF "+" ODR_INT_PRINTF " ",
2924                 req->resultSetId, *req->resultSetStartPoint,
2925                 *req->numberOfRecordsRequested);
2926         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
2927         wrbuf_destroy(wr);
2928     }
2929     if (!resp->records)
2930         return 0;
2931     resp->numberOfRecordsReturned = num;
2932     resp->nextResultSetPosition = next;
2933
2934     return apdu;
2935 }
2936
2937 /*
2938  * Scan was implemented rather in a hurry, and with support for only the basic
2939  * elements of the service in the backend API. Suggestions are welcome.
2940  */
2941 static Z_APDU *process_scanRequest(association *assoc, request *reqb)
2942 {
2943     Z_ScanRequest *req = reqb->apdu_request->u.scanRequest;
2944     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2945     Z_ScanResponse *res = (Z_ScanResponse *)
2946         odr_malloc(assoc->encode, sizeof(*res));
2947     Odr_int *scanStatus = odr_intdup(assoc->encode, Z_Scan_failure);
2948     Odr_int *numberOfEntriesReturned = odr_intdup(assoc->encode, 0);
2949     Z_ListEntries *ents = (Z_ListEntries *)
2950         odr_malloc(assoc->encode, sizeof(*ents));
2951     Z_DiagRecs *diagrecs_p = NULL;
2952     bend_scan_rr *bsrr = (bend_scan_rr *)
2953         odr_malloc(assoc->encode, sizeof(*bsrr));
2954     struct scan_entry *save_entries;
2955     int step_size = 0;
2956
2957     yaz_log(log_requestdetail, "Got ScanRequest");
2958
2959     apdu->which = Z_APDU_scanResponse;
2960     apdu->u.scanResponse = res;
2961     res->referenceId = req->referenceId;
2962
2963     /* if step is absent, set it to 0 */
2964     if (req->stepSize)
2965         step_size = odr_int_to_int(*req->stepSize);
2966
2967     res->stepSize = 0;
2968     res->scanStatus = scanStatus;
2969     res->numberOfEntriesReturned = numberOfEntriesReturned;
2970     res->positionOfTerm = 0;
2971     res->entries = ents;
2972     ents->num_entries = 0;
2973     ents->entries = NULL;
2974     ents->num_nonsurrogateDiagnostics = 0;
2975     ents->nonsurrogateDiagnostics = NULL;
2976     res->attributeSet = 0;
2977     res->otherInfo = 0;
2978
2979     if (req->databaseNames)
2980     {
2981         int i;
2982         for (i = 0; i < req->num_databaseNames; i++)
2983             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
2984     }
2985     bsrr->scanClause = 0;
2986     bsrr->errcode = 0;
2987     bsrr->errstring = 0;
2988     bsrr->num_bases = req->num_databaseNames;
2989     bsrr->basenames = req->databaseNames;
2990     bsrr->num_entries = odr_int_to_int(*req->numberOfTermsRequested);
2991     bsrr->term = req->termListAndStartPoint;
2992     bsrr->referenceId = req->referenceId;
2993     bsrr->stream = assoc->encode;
2994     bsrr->print = assoc->print;
2995     bsrr->step_size = &step_size;
2996     bsrr->setname = yaz_oi_get_string_oid(&req->otherInfo,
2997                                           yaz_oid_userinfo_scan_set, 1, 0);
2998     bsrr->entries = 0;
2999     /* For YAZ 2.0 and earlier it was the backend handler that
3000        initialized entries (member display_term did not exist)
3001        YAZ 2.0 and later sets 'entries'  and initialize all members
3002        including 'display_term'. If YAZ 2.0 or later sees that
3003        entries was modified - we assume that it is an old handler and
3004        that 'display_term' is _not_ set.
3005     */
3006     if (bsrr->num_entries > 0)
3007     {
3008         int i;
3009         bsrr->entries = (struct scan_entry *)
3010             odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
3011                        bsrr->num_entries);
3012         for (i = 0; i<bsrr->num_entries; i++)
3013         {
3014             bsrr->entries[i].term = 0;
3015             bsrr->entries[i].occurrences = 0;
3016             bsrr->entries[i].errcode = 0;
3017             bsrr->entries[i].errstring = 0;
3018             bsrr->entries[i].display_term = 0;
3019         }
3020     }
3021     save_entries = bsrr->entries;  /* save it so we can compare later */
3022
3023     bsrr->attributeset = req->attributeSet;
3024     log_scan_term_level(log_requestdetail, req->termListAndStartPoint,
3025                         bsrr->attributeset);
3026     bsrr->term_position = req->preferredPositionInResponse ?
3027         odr_int_to_int(*req->preferredPositionInResponse) : 1;
3028
3029     ((int (*)(void *, bend_scan_rr *))
3030      (*assoc->init->bend_scan))(assoc->backend, bsrr);
3031
3032     if (bsrr->errcode)
3033         diagrecs_p = zget_DiagRecs(assoc->encode,
3034                                    bsrr->errcode, bsrr->errstring);
3035     else
3036     {
3037         int i;
3038         Z_Entry **tab = (Z_Entry **)
3039             odr_malloc(assoc->encode, sizeof(*tab) * bsrr->num_entries);
3040
3041         if (bsrr->status == BEND_SCAN_PARTIAL)
3042             *scanStatus = Z_Scan_partial_5;
3043         else
3044             *scanStatus = Z_Scan_success;
3045         res->stepSize = odr_intdup(assoc->encode, step_size);
3046         ents->entries = tab;
3047         ents->num_entries = bsrr->num_entries;
3048         res->numberOfEntriesReturned = odr_intdup(assoc->encode,
3049                                                    ents->num_entries);
3050         res->positionOfTerm = odr_intdup(assoc->encode, bsrr->term_position);
3051         for (i = 0; i < bsrr->num_entries; i++)
3052         {
3053             Z_Entry *e;
3054             Z_TermInfo *t;
3055             Odr_oct *o;
3056
3057             tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
3058             if (bsrr->entries[i].occurrences >= 0)
3059             {
3060                 e->which = Z_Entry_termInfo;
3061                 e->u.termInfo = t = (Z_TermInfo *)
3062                     odr_malloc(assoc->encode, sizeof(*t));
3063                 t->suggestedAttributes = 0;
3064                 t->displayTerm = 0;
3065                 if (save_entries == bsrr->entries &&
3066                     bsrr->entries[i].display_term)
3067                 {
3068                     /* the entries was _not_ set by the handler. So it's
3069                        safe to test for new member display_term. It is
3070                        NULL'ed by us.
3071                     */
3072                     t->displayTerm = odr_strdup(assoc->encode,
3073                                                 bsrr->entries[i].display_term);
3074                 }
3075                 t->alternativeTerm = 0;
3076                 t->byAttributes = 0;
3077                 t->otherTermInfo = 0;
3078                 t->globalOccurrences = &bsrr->entries[i].occurrences;
3079                 t->term = (Z_Term *)
3080                     odr_malloc(assoc->encode, sizeof(*t->term));
3081                 t->term->which = Z_Term_general;
3082                 t->term->u.general = o =
3083                     (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
3084                 o->buf = (unsigned char *)
3085                     odr_malloc(assoc->encode, o->len = o->size =
3086                                strlen(bsrr->entries[i].term));
3087                 memcpy(o->buf, bsrr->entries[i].term, o->len);
3088                 yaz_log(YLOG_DEBUG, "  term #%d: '%s' (" ODR_INT_PRINTF ")", i,
3089                          bsrr->entries[i].term, bsrr->entries[i].occurrences);
3090             }
3091             else
3092             {
3093                 Z_DiagRecs *drecs = zget_DiagRecs(assoc->encode,
3094                                                   bsrr->entries[i].errcode,
3095                                                   bsrr->entries[i].errstring);
3096                 assert(drecs->num_diagRecs == 1);
3097                 e->which = Z_Entry_surrogateDiagnostic;
3098                 assert(drecs->diagRecs[0]);
3099                 e->u.surrogateDiagnostic = drecs->diagRecs[0];
3100             }
3101         }
3102     }
3103     if (diagrecs_p)
3104     {
3105         ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
3106         ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
3107     }
3108     if (log_request)
3109     {
3110         int i;
3111         WRBUF wr = wrbuf_alloc();
3112         wrbuf_printf(wr, "Scan ");
3113         for (i = 0 ; i < req->num_databaseNames; i++)
3114         {
3115             if (i)
3116                 wrbuf_printf(wr, "+");
3117             wrbuf_puts(wr, req->databaseNames[i]);
3118         }
3119
3120         wrbuf_printf(wr, " ");
3121
3122         if (bsrr->errcode)
3123             wr_diag(wr, bsrr->errcode, bsrr->errstring);
3124         else
3125             wrbuf_printf(wr, "OK");
3126
3127         wrbuf_printf(wr, " " ODR_INT_PRINTF " - " ODR_INT_PRINTF "+"
3128                      ODR_INT_PRINTF "+" ODR_INT_PRINTF,
3129                      res->numberOfEntriesReturned ?
3130                      *res->numberOfEntriesReturned : 0,
3131                      (req->preferredPositionInResponse ?
3132                       *req->preferredPositionInResponse : 1),
3133                      *req->numberOfTermsRequested,
3134                      (res->stepSize ? *res->stepSize : 1));
3135
3136         if (bsrr->setname)
3137             wrbuf_printf(wr, "+%s", bsrr->setname);
3138
3139         wrbuf_printf(wr, " ");
3140         yaz_scan_to_wrbuf(wr, req->termListAndStartPoint,
3141                           bsrr->attributeset);
3142         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3143         wrbuf_destroy(wr);
3144     }
3145     return apdu;
3146 }
3147
3148 static Z_APDU *process_sortRequest(association *assoc, request *reqb)
3149 {
3150     int i;
3151     Z_SortRequest *req = reqb->apdu_request->u.sortRequest;
3152     Z_SortResponse *res = (Z_SortResponse *)
3153         odr_malloc(assoc->encode, sizeof(*res));
3154     bend_sort_rr *bsrr = (bend_sort_rr *)
3155         odr_malloc(assoc->encode, sizeof(*bsrr));
3156
3157     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
3158
3159     yaz_log(log_requestdetail, "Got SortRequest.");
3160
3161     bsrr->num_input_setnames = req->num_inputResultSetNames;
3162     for (i=0;i<req->num_inputResultSetNames;i++)
3163         yaz_log(log_requestdetail, "Input resultset: '%s'",
3164                 req->inputResultSetNames[i]);
3165     bsrr->input_setnames = req->inputResultSetNames;
3166     bsrr->referenceId = req->referenceId;
3167     bsrr->output_setname = req->sortedResultSetName;
3168     yaz_log(log_requestdetail, "Output resultset: '%s'",
3169                 req->sortedResultSetName);
3170     bsrr->sort_sequence = req->sortSequence;
3171        /*FIXME - dump those sequences too */
3172     bsrr->stream = assoc->encode;
3173     bsrr->print = assoc->print;
3174
3175     bsrr->sort_status = Z_SortResponse_failure;
3176     bsrr->errcode = 0;
3177     bsrr->errstring = 0;
3178
3179     (*assoc->init->bend_sort)(assoc->backend, bsrr);
3180
3181     res->referenceId = bsrr->referenceId;
3182     res->sortStatus = odr_intdup(assoc->encode, bsrr->sort_status);
3183     res->resultSetStatus = 0;
3184     if (bsrr->errcode)
3185     {
3186         Z_DiagRecs *dr = zget_DiagRecs(assoc->encode,
3187                                        bsrr->errcode, bsrr->errstring);
3188         res->diagnostics = dr->diagRecs;
3189         res->num_diagnostics = dr->num_diagRecs;
3190     }
3191     else
3192     {
3193         res->num_diagnostics = 0;
3194         res->diagnostics = 0;
3195     }
3196     res->resultCount = 0;
3197     res->otherInfo = 0;
3198
3199     apdu->which = Z_APDU_sortResponse;
3200     apdu->u.sortResponse = res;
3201     if (log_request)
3202     {
3203         WRBUF wr = wrbuf_alloc();
3204         wrbuf_printf(wr, "Sort ");
3205         if (bsrr->errcode)
3206             wrbuf_printf(wr, " ERROR %d", bsrr->errcode);
3207         else
3208             wrbuf_printf(wr,  "OK -");
3209         wrbuf_printf(wr, " (");
3210         for (i = 0; i<req->num_inputResultSetNames; i++)
3211         {
3212             if (i)
3213                 wrbuf_printf(wr, "+");
3214             wrbuf_puts(wr, req->inputResultSetNames[i]);
3215         }
3216         wrbuf_printf(wr, ")->%s ",req->sortedResultSetName);
3217
3218         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3219         wrbuf_destroy(wr);
3220     }
3221     return apdu;
3222 }
3223
3224 static Z_APDU *process_deleteRequest(association *assoc, request *reqb)
3225 {
3226     int i;
3227     Z_DeleteResultSetRequest *req =
3228         reqb->apdu_request->u.deleteResultSetRequest;
3229     Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
3230         odr_malloc(assoc->encode, sizeof(*res));
3231     bend_delete_rr *bdrr = (bend_delete_rr *)
3232         odr_malloc(assoc->encode, sizeof(*bdrr));
3233     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
3234
3235     yaz_log(log_requestdetail, "Got DeleteRequest.");
3236
3237     bdrr->num_setnames = req->num_resultSetList;
3238     bdrr->setnames = req->resultSetList;
3239     for (i = 0; i<req->num_resultSetList; i++)
3240         yaz_log(log_requestdetail, "resultset: '%s'",
3241                 req->resultSetList[i]);
3242     bdrr->stream = assoc->encode;
3243     bdrr->print = assoc->print;
3244     bdrr->function = odr_int_to_int(*req->deleteFunction);
3245     bdrr->referenceId = req->referenceId;
3246     bdrr->statuses = 0;
3247     if (bdrr->num_setnames > 0)
3248     {
3249         bdrr->statuses = (int*)
3250             odr_malloc(assoc->encode, sizeof(*bdrr->statuses) *
3251                        bdrr->num_setnames);
3252         for (i = 0; i < bdrr->num_setnames; i++)
3253             bdrr->statuses[i] = 0;
3254     }
3255     (*assoc->init->bend_delete)(assoc->backend, bdrr);
3256
3257     res->referenceId = req->referenceId;
3258
3259     res->deleteOperationStatus = odr_intdup(assoc->encode,bdrr->delete_status);
3260
3261     res->deleteListStatuses = 0;
3262     if (bdrr->num_setnames > 0)
3263     {
3264         int i;
3265         res->deleteListStatuses = (Z_ListStatuses *)
3266             odr_malloc(assoc->encode, sizeof(*res->deleteListStatuses));
3267         res->deleteListStatuses->num = bdrr->num_setnames;
3268         res->deleteListStatuses->elements =
3269             (Z_ListStatus **)
3270             odr_malloc(assoc->encode,
3271                         sizeof(*res->deleteListStatuses->elements) *
3272                         bdrr->num_setnames);
3273         for (i = 0; i<bdrr->num_setnames; i++)
3274         {
3275             res->deleteListStatuses->elements[i] =
3276                 (Z_ListStatus *)
3277                 odr_malloc(assoc->encode,
3278                             sizeof(**res->deleteListStatuses->elements));
3279             res->deleteListStatuses->elements[i]->status =
3280                 odr_intdup(assoc->encode, bdrr->statuses[i]);
3281             res->deleteListStatuses->elements[i]->id =
3282                 odr_strdup(assoc->encode, bdrr->setnames[i]);
3283         }
3284     }
3285     res->numberNotDeleted = 0;
3286     res->bulkStatuses = 0;
3287     res->deleteMessage = 0;
3288     res->otherInfo = 0;
3289
3290     apdu->which = Z_APDU_deleteResultSetResponse;
3291     apdu->u.deleteResultSetResponse = res;
3292     if (log_request)
3293     {
3294         WRBUF wr = wrbuf_alloc();
3295         wrbuf_printf(wr, "Delete ");
3296         if (bdrr->delete_status)
3297             wrbuf_printf(wr, "ERROR %d", bdrr->delete_status);
3298         else
3299             wrbuf_printf(wr, "OK -");
3300         for (i = 0; i<req->num_resultSetList; i++)
3301             wrbuf_printf(wr, " %s ", req->resultSetList[i]);
3302         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3303         wrbuf_destroy(wr);
3304     }
3305     return apdu;
3306 }
3307
3308 static void process_close(association *assoc, request *reqb)
3309 {
3310     Z_Close *req = reqb->apdu_request->u.close;
3311     static char *reasons[] =
3312     {
3313         "finished",
3314         "shutdown",
3315         "systemProblem",
3316         "costLimit",
3317         "resources",
3318         "securityViolation",
3319         "protocolError",
3320         "lackOfActivity",
3321         "peerAbort",
3322         "unspecified"
3323     };
3324
3325     yaz_log(log_requestdetail, "Got Close, reason %s, message %s",
3326         reasons[*req->closeReason], req->diagnosticInformation ?
3327         req->diagnosticInformation : "NULL");
3328     if (assoc->version < 3) /* to make do_force respond with close */
3329         assoc->version = 3;
3330     do_close_req(assoc, Z_Close_finished,
3331                  "Association terminated by client", reqb);
3332     yaz_log(log_request,"Close OK");
3333 }
3334
3335 static Z_APDU *process_segmentRequest(association *assoc, request *reqb)
3336 {
3337     bend_segment_rr req;
3338
3339     req.segment = reqb->apdu_request->u.segmentRequest;
3340     req.stream = assoc->encode;
3341     req.decode = assoc->decode;
3342     req.print = assoc->print;
3343     req.association = assoc;
3344
3345     (*assoc->init->bend_segment)(assoc->backend, &req);
3346
3347     return 0;
3348 }
3349
3350 static Z_APDU *process_ESRequest(association *assoc, request *reqb)
3351 {
3352     bend_esrequest_rr esrequest;
3353     const char *ext_name = "unknown";
3354
3355     Z_ExtendedServicesRequest *req =
3356         reqb->apdu_request->u.extendedServicesRequest;
3357     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
3358
3359     Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
3360
3361     esrequest.esr = reqb->apdu_request->u.extendedServicesRequest;
3362     esrequest.stream = assoc->encode;
3363     esrequest.decode = assoc->decode;
3364     esrequest.print = assoc->print;
3365     esrequest.errcode = 0;
3366     esrequest.errstring = NULL;
3367     esrequest.association = assoc;
3368     esrequest.taskPackage = 0;
3369     esrequest.referenceId = req->referenceId;
3370
3371     if (esrequest.esr && esrequest.esr->taskSpecificParameters)
3372     {
3373         switch(esrequest.esr->taskSpecificParameters->which)
3374         {
3375         case Z_External_itemOrder:
3376             ext_name = "ItemOrder"; break;
3377         case Z_External_update:
3378             ext_name = "Update"; break;
3379         case Z_External_update0:
3380             ext_name = "Update0"; break;
3381         case Z_External_ESAdmin:
3382             ext_name = "Admin"; break;
3383
3384         }
3385     }
3386
3387     (*assoc->init->bend_esrequest)(assoc->backend, &esrequest);
3388
3389     resp->referenceId = req->referenceId;
3390
3391     if (esrequest.errcode == -1)
3392     {
3393         /* Backend service indicates request will be processed */
3394         yaz_log(log_request, "Extended Service: %s (accepted)", ext_name);
3395         *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
3396     }
3397     else if (esrequest.errcode == 0)
3398     {
3399         /* Backend service indicates request will be processed */
3400         yaz_log(log_request, "Extended Service: %s (done)", ext_name);
3401         *resp->operationStatus = Z_ExtendedServicesResponse_done;
3402     }
3403     else
3404     {
3405         Z_DiagRecs *diagRecs =
3406             zget_DiagRecs(assoc->encode, esrequest.errcode,
3407                           esrequest.errstring);
3408         /* Backend indicates error, request will not be processed */
3409         yaz_log(log_request, "Extended Service: %s (failed)", ext_name);
3410         *resp->operationStatus = Z_ExtendedServicesResponse_failure;
3411         resp->num_diagnostics = diagRecs->num_diagRecs;
3412         resp->diagnostics = diagRecs->diagRecs;
3413         if (log_request)
3414         {
3415             WRBUF wr = wrbuf_alloc();
3416             wrbuf_diags(wr, resp->num_diagnostics, resp->diagnostics);
3417             yaz_log(log_request, "EsRequest %s", wrbuf_cstr(wr) );
3418             wrbuf_destroy(wr);
3419         }
3420
3421     }
3422     /* Do something with the members of bend_extendedservice */
3423     if (esrequest.taskPackage)
3424     {
3425         resp->taskPackage = z_ext_record_oid(
3426             assoc->encode, yaz_oid_recsyn_extended,
3427             (const char *)  esrequest.taskPackage, -1);
3428     }
3429     yaz_log(YLOG_DEBUG,"Send the result apdu");
3430     return apdu;
3431 }
3432
3433 int bend_assoc_is_alive(bend_association assoc)
3434 {
3435     if (assoc->state == ASSOC_DEAD)
3436         return 0; /* already marked as dead. Don't check I/O chan anymore */
3437
3438     return iochan_is_alive(assoc->client_chan);
3439 }
3440
3441
3442 /*
3443  * Local variables:
3444  * c-basic-offset: 4
3445  * c-file-style: "Stroustrup"
3446  * indent-tabs-mode: nil
3447  * End:
3448  * vim: shiftwidth=4 tabstop=8 expandtab
3449  */
3450