src/seshigh.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2009 Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file seshigh.c
   7  * \brief Implements GFS session logic.
   8  *
   9  * Frontend server logic.
  10  *
  11  * This code receives incoming APDUs, and handles client requests by means
  12  * of the backend API.
  13  *
  14  * Some of the code is getting quite involved, compared to simpler servers -
  15  * primarily because it is asynchronous both in the communication with
  16  * the user and the backend. We think the complexity will pay off in
  17  * the form of greater flexibility when more asynchronous facilities
  18  * are implemented.
  19  *
  20  * Memory management has become somewhat involved. In the simple case, where
  21  * only one PDU is pending at a time, it will simply reuse the same memory,
  22  * once it has found its working size. When we enable multiple concurrent
  23  * operations, perhaps even with multiple parallel calls to the backend, it
  24  * will maintain a pool of buffers for encoding and decoding, trying to
  25  * minimize memory allocation/deallocation during normal operation.
  26  *
  27  */
  28
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <assert.h>
  32 #include <ctype.h>
  33
  34 #if HAVE_SYS_TYPES_H
  35 #include <sys/types.h>
  36 #endif
  37 #if HAVE_SYS_STAT_H
  38 #include <sys/stat.h>
  39 #endif
  40
  41 #ifdef WIN32
  42 #include <io.h>
  43 #define S_ISREG(x) (x & _S_IFREG)
  44 #include <process.h>
  45 #endif
  46
  47 #if HAVE_UNISTD_H
  48 #include <unistd.h>
  49 #endif
  50
  51 #if YAZ_HAVE_XML2
  52 #include <libxml/parser.h>
  53 #include <libxml/tree.h>
  54 #endif
  55
  56 #include <yaz/yconfig.h>
  57 #include <yaz/xmalloc.h>
  58 #include <yaz/comstack.h>
  59 #include "eventl.h"
  60 #include "session.h"
  61 #include "mime.h"
  62 #include <yaz/proto.h>
  63 #include <yaz/oid_db.h>
  64 #include <yaz/log.h>
  65 #include <yaz/logrpn.h>
  66 #include <yaz/querytowrbuf.h>
  67 #include <yaz/statserv.h>
  68 #include <yaz/diagbib1.h>
  69 #include <yaz/charneg.h>
  70 #include <yaz/otherinfo.h>
  71 #include <yaz/yaz-util.h>
  72 #include <yaz/pquery.h>
  73 #include <yaz/oid_db.h>
  74
  75 #include <yaz/srw.h>
  76 #include <yaz/backend.h>
  77 #include <yaz/yaz-ccl.h>
  78
  79 static void process_gdu_request(association *assoc, request *req);
  80 static int process_z_request(association *assoc, request *req, char **msg);
  81 void backend_response(IOCHAN i, int event);
  82 static int process_gdu_response(association *assoc, request *req, Z_GDU *res);
  83 static int process_z_response(association *assoc, request *req, Z_APDU *res);
  84 static Z_APDU *process_initRequest(association *assoc, request *reqb);
  85 static Z_External *init_diagnostics(ODR odr, int errcode,
  86                                     const char *errstring);
  87 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
  88     int *fd);
  89 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
  90     bend_search_rr *bsrr, int *fd);
  91 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
  92     int *fd);
  93 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd);
  94 static Z_APDU *process_sortRequest(association *assoc, request *reqb, int *fd);
  95 static void process_close(association *assoc, request *reqb);
  96 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
  97     int *fd);
  98 static Z_APDU *process_segmentRequest(association *assoc, request *reqb);
  99
 100 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
 101
 102 /* dynamic logging levels */
 103 static int logbits_set = 0;
 104 static int log_session = 0; /* one-line logs for session */
 105 static int log_sessiondetail = 0; /* more detailed stuff */
 106 static int log_request = 0; /* one-line logs for requests */
 107 static int log_requestdetail = 0;  /* more detailed stuff */
 108
 109 /** get_logbits sets global loglevel bits */
 110 static void get_logbits(void)
 111 { /* needs to be called after parsing cmd-line args that can set loglevels!*/
 112     if (!logbits_set)
 113     {
 114         logbits_set = 1;
 115         log_session = yaz_log_module_level("session");
 116         log_sessiondetail = yaz_log_module_level("sessiondetail");
 117         log_request = yaz_log_module_level("request");
 118         log_requestdetail = yaz_log_module_level("requestdetail");
 119     }
 120 }
 121
 122
 123
 124 static void wr_diag(WRBUF w, int error, const char *addinfo)
 125 {
 126     wrbuf_printf(w, "ERROR %d+", error);
 127     wrbuf_puts_replace_char(w, diagbib1_str(error), ' ', '_');
 128     if (addinfo){
 129         wrbuf_puts(w, "+");
 130         wrbuf_puts_replace_char(w, addinfo, ' ', '_');
 131     }
 132
 133     wrbuf_puts(w, " ");
 134 }
 135
 136
 137 /*
 138  * Create and initialize a new association-handle.
 139  *  channel  : iochannel for the current line.
 140  *  link     : communications channel.
 141  * Returns: 0 or a new association handle.
 142  */
 143 association *create_association(IOCHAN channel, COMSTACK link,
 144                                 const char *apdufile)
 145 {
 146     association *anew;
 147
 148     if (!logbits_set)
 149         get_logbits();
 150     if (!(anew = (association *)xmalloc(sizeof(*anew))))
 151         return 0;
 152     anew->init = 0;
 153     anew->version = 0;
 154     anew->last_control = 0;
 155     anew->client_chan = channel;
 156     anew->client_link = link;
 157     anew->cs_get_mask = 0;
 158     anew->cs_put_mask = 0;
 159     anew->cs_accept_mask = 0;
 160     if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
 161         !(anew->encode = odr_createmem(ODR_ENCODE)))
 162         return 0;
 163     if (apdufile && *apdufile)
 164     {
 165         FILE *f;
 166
 167         if (!(anew->print = odr_createmem(ODR_PRINT)))
 168             return 0;
 169         if (*apdufile == '@')
 170         {
 171             odr_setprint(anew->print, yaz_log_file());
 172         }
 173         else if (*apdufile != '-')
 174         {
 175             char filename[256];
 176             sprintf(filename, "%.200s.%ld", apdufile, (long)getpid());
 177             if (!(f = fopen(filename, "w")))
 178             {
 179                 yaz_log(YLOG_WARN|YLOG_ERRNO, "%s", filename);
 180                 return 0;
 181             }
 182             setvbuf(f, 0, _IONBF, 0);
 183             odr_setprint(anew->print, f);
 184         }
 185     }
 186     else
 187         anew->print = 0;
 188     anew->input_buffer = 0;
 189     anew->input_buffer_len = 0;
 190     anew->backend = 0;
 191     anew->state = ASSOC_NEW;
 192     request_initq(&anew->incoming);
 193     request_initq(&anew->outgoing);
 194     anew->proto = cs_getproto(link);
 195     anew->server = 0;
 196     return anew;
 197 }
 198
 199 /*
 200  * Free association and release resources.
 201  */
 202 void destroy_association(association *h)
 203 {
 204     statserv_options_block *cb = statserv_getcontrol();
 205     request *req;
 206
 207     xfree(h->init);
 208     odr_destroy(h->decode);
 209     odr_destroy(h->encode);
 210     if (h->print)
 211         odr_destroy(h->print);
 212     if (h->input_buffer)
 213     xfree(h->input_buffer);
 214     if (h->backend)
 215         (*cb->bend_close)(h->backend);
 216     while ((req = request_deq(&h->incoming)))
 217         request_release(req);
 218     while ((req = request_deq(&h->outgoing)))
 219         request_release(req);
 220     request_delq(&h->incoming);
 221     request_delq(&h->outgoing);
 222     xfree(h);
 223     xmalloc_trav("session closed");
 224     if (cb && cb->one_shot)
 225     {
 226         exit(0);
 227     }
 228 }
 229
 230 static void do_close_req(association *a, int reason, char *message,
 231                          request *req)
 232 {
 233     Z_APDU apdu;
 234     Z_Close *cls = zget_Close(a->encode);
 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         apdu.which = Z_APDU_close;
 244         apdu.u.close = cls;
 245         *cls->closeReason = reason;
 246         cls->diagnosticInformation = message;
 247         process_z_response(a, req, &apdu);
 248         iochan_settimeout(a->client_chan, 20);
 249     }
 250     else
 251     {
 252         request_release(req);
 253         yaz_log(log_requestdetail, "v2 client. No Close PDU");
 254         iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
 255         a->cs_put_mask = 0;
 256     }
 257     a->state = ASSOC_DEAD;
 258 }
 259
 260 static void do_close(association *a, int reason, char *message)
 261 {
 262     request *req = request_get(&a->outgoing);
 263     do_close_req (a, reason, message, req);
 264 }
 265
 266
 267 int ir_read(IOCHAN h, int event)
 268 {
 269     association *assoc = (association *)iochan_getdata(h);
 270     COMSTACK conn = assoc->client_link;
 271     request *req;
 272
 273     if ((assoc->cs_put_mask & EVENT_INPUT) == 0 && (event & assoc->cs_get_mask))
 274     {
 275         yaz_log(YLOG_DEBUG, "ir_session (input)");
 276         /* We aren't speaking to this fellow */
 277         if (assoc->state == ASSOC_DEAD)
 278         {
 279             yaz_log(log_sessiondetail, "Connection closed - end of session");
 280             cs_close(conn);
 281             destroy_association(assoc);
 282             iochan_destroy(h);
 283             return 0;
 284         }
 285         assoc->cs_get_mask = EVENT_INPUT;
 286
 287         do
 288         {
 289             int res = cs_get(conn, &assoc->input_buffer,
 290                              &assoc->input_buffer_len);
 291             if (res < 0 && cs_errno(conn) == CSBUFSIZE)
 292             {
 293                 yaz_log(log_session, "Connection error: %s res=%d",
 294                         cs_errmsg(cs_errno(conn)), res);
 295                 req = request_get(&assoc->incoming); /* get a new request */
 296                 do_close_req(assoc, Z_Close_protocolError,
 297                              "Incoming package too large", req);
 298                 return 0;
 299             }
 300             else if (res <= 0)
 301             {
 302                 yaz_log(log_session, "Connection closed by client");
 303                 assoc->state = ASSOC_DEAD;
 304                 return 0;
 305             }
 306             else if (res == 1) /* incomplete read - wait for more  */
 307             {
 308                 if (conn->io_pending & CS_WANT_WRITE)
 309                     assoc->cs_get_mask |= EVENT_OUTPUT;
 310                 iochan_setflag(h, assoc->cs_get_mask);
 311                 return 0;
 312             }
 313             /* we got a complete PDU. Let's decode it */
 314             yaz_log(YLOG_DEBUG, "Got PDU, %d bytes: lead=%02X %02X %02X", res,
 315                     assoc->input_buffer[0] & 0xff,
 316                     assoc->input_buffer[1] & 0xff,
 317                     assoc->input_buffer[2] & 0xff);
 318             req = request_get(&assoc->incoming); /* get a new request */
 319             odr_reset(assoc->decode);
 320             odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
 321             if (!z_GDU(assoc->decode, &req->gdu_request, 0, 0))
 322             {
 323                 yaz_log(YLOG_WARN, "ODR error on incoming PDU: %s [element %s] "
 324                         "[near byte %ld] ",
 325                         odr_errmsg(odr_geterror(assoc->decode)),
 326                         odr_getelement(assoc->decode),
 327                         (long) odr_offset(assoc->decode));
 328                 if (assoc->decode->error != OHTTP)
 329                 {
 330                     yaz_log(YLOG_WARN, "PDU dump:");
 331                     odr_dumpBER(yaz_log_file(), assoc->input_buffer, res);
 332                     request_release(req);
 333                     do_close(assoc, Z_Close_protocolError, "Malformed package");
 334                 }
 335                 else
 336                 {
 337                     Z_GDU *p = z_get_HTTP_Response(assoc->encode, 400);
 338                     assoc->state = ASSOC_DEAD;
 339                     process_gdu_response(assoc, req, p);
 340                 }
 341                 return 0;
 342             }
 343             req->request_mem = odr_extract_mem(assoc->decode);
 344             if (assoc->print)
 345             {
 346                 if (!z_GDU(assoc->print, &req->gdu_request, 0, 0))
 347                     yaz_log(YLOG_WARN, "ODR print error: %s",
 348                             odr_errmsg(odr_geterror(assoc->print)));
 349                 odr_reset(assoc->print);
 350             }
 351             request_enq(&assoc->incoming, req);
 352         }
 353         while (cs_more(conn));
 354     }
 355     return 1;
 356 }
 357
 358 /*
 359  * This is where PDUs from the client are read and the further
 360  * processing is initiated. Flow of control moves down through the
 361  * various process_* functions below, until the encoded result comes back up
 362  * to the output handler in here.
 363  *
 364  *  h     : the I/O channel that has an outstanding event.
 365  *  event : the current outstanding event.
 366  */
 367 void ir_session(IOCHAN h, int event)
 368 {
 369     int res;
 370     association *assoc = (association *)iochan_getdata(h);
 371     COMSTACK conn = assoc->client_link;
 372     request *req;
 373
 374     assert(h && conn && assoc);
 375     if (event == EVENT_TIMEOUT)
 376     {
 377         if (assoc->state != ASSOC_UP)
 378         {
 379             yaz_log(log_session, "Timeout. Closing connection");
 380             /* do we need to lod this at all */
 381             cs_close(conn);
 382             destroy_association(assoc);
 383             iochan_destroy(h);
 384         }
 385         else
 386         {
 387             yaz_log(log_sessiondetail, "Timeout. Sending Z39.50 Close");
 388             do_close(assoc, Z_Close_lackOfActivity, 0);
 389         }
 390         return;
 391     }
 392     if (event & assoc->cs_accept_mask)
 393     {
 394         if (!cs_accept(conn))
 395         {
 396             yaz_log(YLOG_WARN, "accept failed");
 397             destroy_association(assoc);
 398             iochan_destroy(h);
 399             return;
 400         }
 401         iochan_clearflag(h, EVENT_OUTPUT);
 402         if (conn->io_pending)
 403         {   /* cs_accept didn't complete */
 404             assoc->cs_accept_mask =
 405                 ((conn->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
 406                 ((conn->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
 407
 408             iochan_setflag(h, assoc->cs_accept_mask);
 409         }
 410         else
 411         {   /* cs_accept completed. Prepare for reading (cs_get) */
 412             assoc->cs_accept_mask = 0;
 413             assoc->cs_get_mask = EVENT_INPUT;
 414             iochan_setflag(h, assoc->cs_get_mask);
 415         }
 416         return;
 417     }
 418     if (event & assoc->cs_get_mask) /* input */
 419     {
 420         if (!ir_read(h, event))
 421             return;
 422         req = request_head(&assoc->incoming);
 423         if (req->state == REQUEST_IDLE)
 424         {
 425             request_deq(&assoc->incoming);
 426             process_gdu_request(assoc, req);
 427         }
 428     }
 429     if (event & assoc->cs_put_mask)
 430     {
 431         request *req = request_head(&assoc->outgoing);
 432
 433         assoc->cs_put_mask = 0;
 434         yaz_log(YLOG_DEBUG, "ir_session (output)");
 435         req->state = REQUEST_PENDING;
 436         switch (res = cs_put(conn, req->response, req->len_response))
 437         {
 438         case -1:
 439             yaz_log(log_sessiondetail, "Connection closed by client");
 440             cs_close(conn);
 441             destroy_association(assoc);
 442             iochan_destroy(h);
 443             break;
 444         case 0: /* all sent - release the request structure */
 445             yaz_log(YLOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
 446 #if 0
 447             yaz_log(YLOG_DEBUG, "HTTP out:\n%.*s", req->len_response,
 448                     req->response);
 449 #endif
 450             nmem_destroy(req->request_mem);
 451             request_deq(&assoc->outgoing);
 452             request_release(req);
 453             if (!request_head(&assoc->outgoing))
 454             {   /* restore mask for cs_get operation ... */
 455                 iochan_clearflag(h, EVENT_OUTPUT|EVENT_INPUT);
 456                 iochan_setflag(h, assoc->cs_get_mask);
 457                 if (assoc->state == ASSOC_DEAD)
 458                     iochan_setevent(assoc->client_chan, EVENT_TIMEOUT);
 459             }
 460             else
 461             {
 462                 assoc->cs_put_mask = EVENT_OUTPUT;
 463             }
 464             break;
 465         default:
 466             if (conn->io_pending & CS_WANT_WRITE)
 467                 assoc->cs_put_mask |= EVENT_OUTPUT;
 468             if (conn->io_pending & CS_WANT_READ)
 469                 assoc->cs_put_mask |= EVENT_INPUT;
 470             iochan_setflag(h, assoc->cs_put_mask);
 471         }
 472     }
 473     if (event & EVENT_EXCEPT)
 474     {
 475         yaz_log(YLOG_WARN, "ir_session (exception)");
 476         cs_close(conn);
 477         destroy_association(assoc);
 478         iochan_destroy(h);
 479     }
 480 }
 481
 482 static int process_z_request(association *assoc, request *req, char **msg);
 483
 484
 485 static void assoc_init_reset(association *assoc)
 486 {
 487     xfree (assoc->init);
 488     assoc->init = (bend_initrequest *) xmalloc(sizeof(*assoc->init));
 489
 490     assoc->init->stream = assoc->encode;
 491     assoc->init->print = assoc->print;
 492     assoc->init->auth = 0;
 493     assoc->init->referenceId = 0;
 494     assoc->init->implementation_version = 0;
 495     assoc->init->implementation_id = 0;
 496     assoc->init->implementation_name = 0;
 497     assoc->init->query_charset = 0;
 498     assoc->init->records_in_same_charset = 0;
 499     assoc->init->bend_sort = NULL;
 500     assoc->init->bend_search = NULL;
 501     assoc->init->bend_present = NULL;
 502     assoc->init->bend_esrequest = NULL;
 503     assoc->init->bend_delete = NULL;
 504     assoc->init->bend_scan = NULL;
 505     assoc->init->bend_segment = NULL;
 506     assoc->init->bend_fetch = NULL;
 507     assoc->init->bend_explain = NULL;
 508     assoc->init->bend_srw_scan = NULL;
 509     assoc->init->bend_srw_update = NULL;
 510     assoc->init->named_result_sets = 0;
 511
 512     assoc->init->charneg_request = NULL;
 513     assoc->init->charneg_response = NULL;
 514
 515     assoc->init->decode = assoc->decode;
 516     assoc->init->peer_name =
 517         odr_strdup(assoc->encode, cs_addrstr(assoc->client_link));
 518
 519     yaz_log(log_requestdetail, "peer %s", assoc->init->peer_name);
 520 }
 521
 522 static int srw_bend_init(association *assoc, Z_SRW_diagnostic **d, int *num, Z_SRW_PDU *sr)
 523 {
 524     statserv_options_block *cb = statserv_getcontrol();
 525     if (!assoc->init)
 526     {
 527         const char *encoding = "UTF-8";
 528         Z_External *ce;
 529         bend_initresult *binitres;
 530
 531         yaz_log(log_requestdetail, "srw_bend_init config=%s", cb->configname);
 532         assoc_init_reset(assoc);
 533
 534         if (sr->username)
 535         {
 536             Z_IdAuthentication *auth = (Z_IdAuthentication *)
 537                 odr_malloc(assoc->decode, sizeof(*auth));
 538             int len;
 539
 540             len = strlen(sr->username) + 1;
 541             if (sr->password)
 542                 len += strlen(sr->password) + 2;
 543             auth->which = Z_IdAuthentication_open;
 544             auth->u.open = (char *) odr_malloc(assoc->decode, len);
 545             strcpy(auth->u.open, sr->username);
 546             if (sr->password && *sr->password)
 547             {
 548                 strcat(auth->u.open, "/");
 549                 strcat(auth->u.open, sr->password);
 550             }
 551             assoc->init->auth = auth;
 552         }
 553
 554 #if 1
 555         ce = yaz_set_proposal_charneg(assoc->decode, &encoding, 1, 0, 0, 1);
 556         assoc->init->charneg_request = ce->u.charNeg3;
 557 #endif
 558         assoc->backend = 0;
 559         if (!(binitres = (*cb->bend_init)(assoc->init)))
 560         {
 561             assoc->state = ASSOC_DEAD;
 562             yaz_add_srw_diagnostic(assoc->encode, d, num,
 563                             YAZ_SRW_AUTHENTICATION_ERROR, 0);
 564             return 0;
 565         }
 566         assoc->backend = binitres->handle;
 567         assoc->init->auth = 0;
 568         if (binitres->errcode)
 569         {
 570             int srw_code = yaz_diag_bib1_to_srw(binitres->errcode);
 571             assoc->state = ASSOC_DEAD;
 572             yaz_add_srw_diagnostic(assoc->encode, d, num, srw_code,
 573                                    binitres->errstring);
 574             return 0;
 575         }
 576         return 1;
 577     }
 578     return 1;
 579 }
 580
 581 static int retrieve_fetch(association *assoc, bend_fetch_rr *rr)
 582 {
 583 #if YAZ_HAVE_XML2
 584     yaz_record_conv_t rc = 0;
 585     const char *match_schema = 0;
 586     Odr_oid *match_syntax = 0;
 587
 588     if (assoc->server)
 589     {
 590         int r;
 591         const char *input_schema = yaz_get_esn(rr->comp);
 592         Odr_oid *input_syntax_raw = rr->request_format;
 593
 594         const char *backend_schema = 0;
 595         Odr_oid *backend_syntax = 0;
 596
 597         r = yaz_retrieval_request(assoc->server->retrieval,
 598                                   input_schema,
 599                                   input_syntax_raw,
 600                                   &match_schema,
 601                                   &match_syntax,
 602                                   &rc,
 603                                   &backend_schema,
 604                                   &backend_syntax);
 605         if (r == -1) /* error ? */
 606         {
 607             const char *details = yaz_retrieval_get_error(
 608                 assoc->server->retrieval);
 609
 610             rr->errcode = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 611             if (details)
 612                 rr->errstring = odr_strdup(rr->stream, details);
 613             return -1;
 614         }
 615         else if (r == 1 || r == 3)
 616         {
 617             const char *details = input_schema;
 618             rr->errcode =
 619                 YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 620             if (details)
 621                 rr->errstring = odr_strdup(rr->stream, details);
 622             return -1;
 623         }
 624         else if (r == 2)
 625         {
 626             rr->errcode = YAZ_BIB1_RECORD_SYNTAX_UNSUPP;
 627             if (input_syntax_raw)
 628             {
 629                 char oidbuf[OID_STR_MAX];
 630                 oid_oid_to_dotstring(input_syntax_raw, oidbuf);
 631                 rr->errstring = odr_strdup(rr->stream, oidbuf);
 632             }
 633             return -1;
 634         }
 635         if (backend_schema)
 636         {
 637             yaz_set_esn(&rr->comp, backend_schema, odr_getmem(rr->stream));
 638         }
 639         if (backend_syntax)
 640             rr->request_format = backend_syntax;
 641     }
 642     (*assoc->init->bend_fetch)(assoc->backend, rr);
 643     if (rc && rr->record && rr->errcode == 0 && rr->len > 0)
 644     {   /* post conversion must take place .. */
 645         WRBUF output_record = wrbuf_alloc();
 646         int r = yaz_record_conv_record(rc, rr->record, rr->len, output_record);
 647         if (r)
 648         {
 649             const char *details = yaz_record_conv_get_error(rc);
 650             rr->errcode = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 651             if (details)
 652                 rr->errstring = odr_strdup(rr->stream, details);
 653         }
 654         else
 655         {
 656             rr->len = wrbuf_len(output_record);
 657             rr->record = (char *) odr_malloc(rr->stream, rr->len);
 658             memcpy(rr->record, wrbuf_buf(output_record), rr->len);
 659         }
 660         wrbuf_destroy(output_record);
 661     }
 662     if (match_syntax)
 663         rr->output_format = match_syntax;
 664     if (match_schema)
 665         rr->schema = odr_strdup(rr->stream, match_schema);
 666 #else
 667     (*assoc->init->bend_fetch)(assoc->backend, rr);
 668 #endif
 669     return 0;
 670 }
 671
 672 static int srw_bend_fetch(association *assoc, int pos,
 673                           Z_SRW_searchRetrieveRequest *srw_req,
 674                           Z_SRW_record *record,
 675                           const char **addinfo)
 676 {
 677     bend_fetch_rr rr;
 678     ODR o = assoc->encode;
 679
 680     rr.setname = "default";
 681     rr.number = pos;
 682     rr.referenceId = 0;
 683     rr.request_format = odr_oiddup(assoc->decode, yaz_oid_recsyn_xml);
 684
 685     rr.comp = (Z_RecordComposition *)
 686             odr_malloc(assoc->decode, sizeof(*rr.comp));
 687     rr.comp->which = Z_RecordComp_complex;
 688     rr.comp->u.complex = (Z_CompSpec *)
 689             odr_malloc(assoc->decode, sizeof(Z_CompSpec));
 690     rr.comp->u.complex->selectAlternativeSyntax = (bool_t *)
 691         odr_malloc(assoc->encode, sizeof(bool_t));
 692     *rr.comp->u.complex->selectAlternativeSyntax = 0;
 693     rr.comp->u.complex->num_dbSpecific = 0;
 694     rr.comp->u.complex->dbSpecific = 0;
 695     rr.comp->u.complex->num_recordSyntax = 0;
 696     rr.comp->u.complex->recordSyntax = 0;
 697
 698     rr.comp->u.complex->generic = (Z_Specification *)
 699             odr_malloc(assoc->decode, sizeof(Z_Specification));
 700
 701     /* schema uri = recordSchema (or NULL if recordSchema is not given) */
 702     rr.comp->u.complex->generic->which = Z_Schema_uri;
 703     rr.comp->u.complex->generic->schema.uri = srw_req->recordSchema;
 704
 705     /* ESN = recordSchema if recordSchema is present */
 706     rr.comp->u.complex->generic->elementSpec = 0;
 707     if (srw_req->recordSchema)
 708     {
 709         rr.comp->u.complex->generic->elementSpec =
 710             (Z_ElementSpec *) odr_malloc(assoc->encode, sizeof(Z_ElementSpec));
 711         rr.comp->u.complex->generic->elementSpec->which =
 712             Z_ElementSpec_elementSetName;
 713         rr.comp->u.complex->generic->elementSpec->u.elementSetName =
 714             srw_req->recordSchema;
 715     }
 716
 717     rr.stream = assoc->encode;
 718     rr.print = assoc->print;
 719
 720     rr.basename = 0;
 721     rr.len = 0;
 722     rr.record = 0;
 723     rr.last_in_set = 0;
 724     rr.errcode = 0;
 725     rr.errstring = 0;
 726     rr.surrogate_flag = 0;
 727     rr.schema = srw_req->recordSchema;
 728
 729     if (!assoc->init->bend_fetch)
 730         return 1;
 731
 732     retrieve_fetch(assoc, &rr);
 733
 734     if (rr.errcode && rr.surrogate_flag)
 735     {
 736         int code = yaz_diag_bib1_to_srw(rr.errcode);
 737         yaz_mk_sru_surrogate(o, record, pos, code, rr.errstring);
 738         return 0;
 739     }
 740     else if (rr.len >= 0)
 741     {
 742         record->recordData_buf = rr.record;
 743         record->recordData_len = rr.len;
 744         record->recordPosition = odr_intdup(o, pos);
 745         record->recordSchema = odr_strdup_null(
 746             o, rr.schema ? rr.schema : srw_req->recordSchema);
 747     }
 748     if (rr.errcode)
 749     {
 750         *addinfo = rr.errstring;
 751         return rr.errcode;
 752     }
 753     return 0;
 754 }
 755
 756 static int cql2pqf(ODR odr, const char *cql, cql_transform_t ct,
 757                    Z_Query *query_result)
 758 {
 759     /* have a CQL query and  CQL to PQF transform .. */
 760     CQL_parser cp = cql_parser_create();
 761     int r;
 762     int srw_errcode = 0;
 763     const char *add = 0;
 764     char rpn_buf[5120];
 765
 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         /* Syntax OK */
 774         r = cql_transform_buf(ct,
 775                               cql_parser_result(cp),
 776                               rpn_buf, sizeof(rpn_buf)-1);
 777         if (r)
 778             srw_errcode = cql_transform_error(ct, &add);
 779     }
 780     if (!r)
 781     {
 782         /* Syntax & transform OK. */
 783         /* Convert PQF string to Z39.50 to RPN query struct */
 784         YAZ_PQF_Parser pp = yaz_pqf_create();
 785         Z_RPNQuery *rpnquery = yaz_pqf_parse(pp, odr, rpn_buf);
 786         if (!rpnquery)
 787         {
 788             size_t off;
 789             const char *pqf_msg;
 790             int code = yaz_pqf_error(pp, &pqf_msg, &off);
 791             yaz_log(YLOG_WARN, "PQF Parser Error %s (code %d)",
 792                     pqf_msg, code);
 793             srw_errcode = YAZ_SRW_QUERY_SYNTAX_ERROR;
 794         }
 795         else
 796         {
 797             query_result->which = Z_Query_type_1;
 798             query_result->u.type_1 = rpnquery;
 799         }
 800         yaz_pqf_destroy(pp);
 801     }
 802     cql_parser_destroy(cp);
 803     return srw_errcode;
 804 }
 805
 806 static int cql2pqf_scan(ODR odr, const char *cql, cql_transform_t ct,
 807                         Z_AttributesPlusTerm *result)
 808 {
 809     Z_Query query;
 810     Z_RPNQuery *rpn;
 811     int srw_error = cql2pqf(odr, cql, ct, &query);
 812     if (srw_error)
 813         return srw_error;
 814     if (query.which != Z_Query_type_1 && query.which != Z_Query_type_101)
 815         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* bad query type */
 816     rpn = query.u.type_1;
 817     if (!rpn->RPNStructure)
 818         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be structure */
 819     if (rpn->RPNStructure->which != Z_RPNStructure_simple)
 820         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be simple */
 821     if (rpn->RPNStructure->u.simple->which != Z_Operand_APT)
 822         return YAZ_SRW_QUERY_SYNTAX_ERROR; /* must be be attributes + term */
 823     memcpy(result, rpn->RPNStructure->u.simple->u.attributesPlusTerm,
 824            sizeof(*result));
 825     return 0;
 826 }
 827
 828
 829 static int ccl2pqf(ODR odr, const Odr_oct *ccl, CCL_bibset bibset,
 830                    bend_search_rr *bsrr) {
 831     char *ccl0;
 832     struct ccl_rpn_node *node;
 833     int errcode, pos;
 834
 835     ccl0 = odr_strdupn(odr, (char*) ccl->buf, ccl->len);
 836     if ((node = ccl_find_str(bibset, ccl0, &errcode, &pos)) == 0) {
 837         bsrr->errstring = (char*) ccl_err_msg(errcode);
 838         return YAZ_SRW_QUERY_SYNTAX_ERROR;    /* Query syntax error */
 839     }
 840
 841     bsrr->query->which = Z_Query_type_1;
 842     bsrr->query->u.type_1 = ccl_rpn_query(odr, node);
 843     return 0;
 844 }
 845
 846
 847 static void srw_bend_search(association *assoc, request *req,
 848                             Z_SRW_PDU *sr,
 849                             Z_SRW_PDU *res,
 850                             int *http_code)
 851 {
 852     Z_SRW_searchRetrieveResponse *srw_res = res->u.response;
 853     int srw_error = 0;
 854     Z_External *ext;
 855     Z_SRW_searchRetrieveRequest *srw_req = sr->u.request;
 856
 857     *http_code = 200;
 858     yaz_log(log_requestdetail, "Got SRW SearchRetrieveRequest");
 859     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
 860     if (srw_res->num_diagnostics == 0 && assoc->init)
 861     {
 862         bend_search_rr rr;
 863         rr.setname = "default";
 864         rr.replace_set = 1;
 865         rr.num_bases = 1;
 866         rr.basenames = &srw_req->database;
 867         rr.referenceId = 0;
 868         rr.srw_sortKeys = 0;
 869         rr.srw_setname = 0;
 870         rr.srw_setnameIdleTime = 0;
 871         rr.estimated_hit_count = 0;
 872         rr.partial_resultset = 0;
 873         rr.query = (Z_Query *) odr_malloc(assoc->decode, sizeof(*rr.query));
 874         rr.query->u.type_1 = 0;
 875         rr.extra_args = sr->extra_args;
 876         rr.extra_response_data = 0;
 877
 878         if (srw_req->query_type == Z_SRW_query_type_cql)
 879         {
 880             if (assoc->server && assoc->server->cql_transform)
 881             {
 882                 int srw_errcode = cql2pqf(assoc->encode, srw_req->query.cql,
 883                                           assoc->server->cql_transform,
 884                                           rr.query);
 885                 if (srw_errcode)
 886                 {
 887                     yaz_add_srw_diagnostic(assoc->encode,
 888                                            &srw_res->diagnostics,
 889                                            &srw_res->num_diagnostics,
 890                                            srw_errcode, 0);
 891                 }
 892             }
 893             else
 894             {
 895                 /* CQL query to backend. Wrap it - Z39.50 style */
 896                 ext = (Z_External *) odr_malloc(assoc->decode, sizeof(*ext));
 897                 ext->direct_reference = odr_getoidbystr(assoc->decode,
 898                                                         "1.2.840.10003.16.2");
 899                 ext->indirect_reference = 0;
 900                 ext->descriptor = 0;
 901                 ext->which = Z_External_CQL;
 902                 ext->u.cql = srw_req->query.cql;
 903
 904                 rr.query->which = Z_Query_type_104;
 905                 rr.query->u.type_104 =  ext;
 906             }
 907         }
 908         else if (srw_req->query_type == Z_SRW_query_type_pqf)
 909         {
 910             Z_RPNQuery *RPNquery;
 911             YAZ_PQF_Parser pqf_parser;
 912
 913             pqf_parser = yaz_pqf_create();
 914
 915             RPNquery = yaz_pqf_parse(pqf_parser, assoc->decode,
 916                                      srw_req->query.pqf);
 917             if (!RPNquery)
 918             {
 919                 const char *pqf_msg;
 920                 size_t off;
 921                 int code = yaz_pqf_error(pqf_parser, &pqf_msg, &off);
 922                 yaz_log(log_requestdetail, "Parse error %d %s near offset %ld",
 923                         code, pqf_msg, (long) off);
 924                 srw_error = YAZ_SRW_QUERY_SYNTAX_ERROR;
 925             }
 926
 927             rr.query->which = Z_Query_type_1;
 928             rr.query->u.type_1 =  RPNquery;
 929
 930             yaz_pqf_destroy(pqf_parser);
 931         }
 932         else
 933         {
 934             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
 935                                    &srw_res->num_diagnostics,
 936                                    YAZ_SRW_UNSUPP_QUERY_TYPE, 0);
 937         }
 938         if (rr.query->u.type_1)
 939         {
 940             rr.stream = assoc->encode;
 941             rr.decode = assoc->decode;
 942             rr.print = assoc->print;
 943             if ( srw_req->sort.sortKeys )
 944                 rr.srw_sortKeys = odr_strdup(assoc->encode,
 945                                              srw_req->sort.sortKeys );
 946             rr.association = assoc;
 947             rr.fd = 0;
 948             rr.hits = 0;
 949             rr.errcode = 0;
 950             rr.errstring = 0;
 951             rr.search_info = 0;
 952             yaz_log_zquery_level(log_requestdetail,rr.query);
 953
 954             (assoc->init->bend_search)(assoc->backend, &rr);
 955             if (rr.errcode)
 956             {
 957                 if (rr.errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
 958                 {
 959                     *http_code = 404;
 960                 }
 961                 else
 962                 {
 963                     srw_error = yaz_diag_bib1_to_srw(rr.errcode);
 964                     yaz_add_srw_diagnostic(assoc->encode,
 965                                            &srw_res->diagnostics,
 966                                            &srw_res->num_diagnostics,
 967                                            srw_error, rr.errstring);
 968                 }
 969             }
 970             else
 971             {
 972                 int number = srw_req->maximumRecords ? *srw_req->maximumRecords : 0;
 973                 int start = srw_req->startRecord ? *srw_req->startRecord : 1;
 974
 975                 yaz_log(log_requestdetail, "Request to pack %d+%d out of "
 976                         ODR_INT_PRINTF,
 977                         start, number, rr.hits);
 978
 979                 srw_res->numberOfRecords = odr_intdup(assoc->encode, rr.hits);
 980                 if (rr.srw_setname)
 981                 {
 982                     srw_res->resultSetId =
 983                         odr_strdup(assoc->encode, rr.srw_setname );
 984                     srw_res->resultSetIdleTime =
 985                         odr_intdup(assoc->encode, *rr.srw_setnameIdleTime );
 986                 }
 987
 988                 if (start > rr.hits || start < 1)
 989                 {
 990                     /* if hits<=0 and start=1 we don't return a diagnostic */
 991                     if (start != 1)
 992                         yaz_add_srw_diagnostic(
 993                             assoc->encode,
 994                             &srw_res->diagnostics, &srw_res->num_diagnostics,
 995                             YAZ_SRW_FIRST_RECORD_POSITION_OUT_OF_RANGE, 0);
 996                 }
 997                 else if (number > 0)
 998                 {
 999                     int i;
1000                     int ok = 1;
1001                     if (start + number > rr.hits)
1002                         number = rr.hits - start + 1;
1003
1004                     /* Call bend_present if defined */
1005                     if (assoc->init->bend_present)
1006                     {
1007                         bend_present_rr *bprr = (bend_present_rr*)
1008                             odr_malloc(assoc->decode, sizeof(*bprr));
1009                         bprr->setname = "default";
1010                         bprr->start = start;
1011                         bprr->number = number;
1012                         if (srw_req->recordSchema)
1013                         {
1014                             bprr->comp = (Z_RecordComposition *) odr_malloc(assoc->decode,
1015                                                                             sizeof(*bprr->comp));
1016                             bprr->comp->which = Z_RecordComp_simple;
1017                             bprr->comp->u.simple = (Z_ElementSetNames *)
1018                                 odr_malloc(assoc->decode, sizeof(Z_ElementSetNames));
1019                             bprr->comp->u.simple->which = Z_ElementSetNames_generic;
1020                             bprr->comp->u.simple->u.generic = srw_req->recordSchema;
1021                         }
1022                         else
1023                         {
1024                             bprr->comp = 0;
1025                         }
1026                         bprr->stream = assoc->encode;
1027                         bprr->referenceId = 0;
1028                         bprr->print = assoc->print;
1029                         bprr->association = assoc;
1030                         bprr->errcode = 0;
1031                         bprr->errstring = NULL;
1032                         (*assoc->init->bend_present)(assoc->backend, bprr);
1033
1034                         if (bprr->errcode)
1035                         {
1036                             srw_error = yaz_diag_bib1_to_srw(bprr->errcode);
1037                             yaz_add_srw_diagnostic(assoc->encode,
1038                                                    &srw_res->diagnostics,
1039                                                    &srw_res->num_diagnostics,
1040                                                    srw_error, bprr->errstring);
1041                             ok = 0;
1042                         }
1043                     }
1044
1045                     if (ok)
1046                     {
1047                         int j = 0;
1048                         int packing = Z_SRW_recordPacking_string;
1049                         if (srw_req->recordPacking)
1050                         {
1051                             packing =
1052                                 yaz_srw_str_to_pack(srw_req->recordPacking);
1053                             if (packing == -1)
1054                                 packing = Z_SRW_recordPacking_string;
1055                         }
1056                         srw_res->records = (Z_SRW_record *)
1057                             odr_malloc(assoc->encode,
1058                                        number * sizeof(*srw_res->records));
1059
1060                         srw_res->extra_records = (Z_SRW_extra_record **)
1061                             odr_malloc(assoc->encode,
1062                                        number*sizeof(*srw_res->extra_records));
1063
1064                         for (i = 0; i<number; i++)
1065                         {
1066                             int errcode;
1067                             const char *addinfo = 0;
1068
1069                             srw_res->records[j].recordPacking = packing;
1070                             srw_res->records[j].recordData_buf = 0;
1071                             srw_res->extra_records[j] = 0;
1072                             yaz_log(YLOG_DEBUG, "srw_bend_fetch %d", i+start);
1073                             errcode = srw_bend_fetch(assoc, i+start, srw_req,
1074                                                      srw_res->records + j,
1075                                                      &addinfo);
1076                             if (errcode)
1077                             {
1078                                 yaz_add_srw_diagnostic(assoc->encode,
1079                                                        &srw_res->diagnostics,
1080                                                        &srw_res->num_diagnostics,
1081                                                        yaz_diag_bib1_to_srw(errcode),
1082                                                        addinfo);
1083
1084                                 break;
1085                             }
1086                             if (srw_res->records[j].recordData_buf)
1087                                 j++;
1088                         }
1089                         srw_res->num_records = j;
1090                         if (!j)
1091                             srw_res->records = 0;
1092                     }
1093                 }
1094                 if (rr.extra_response_data)
1095                 {
1096                     res->extraResponseData_buf = rr.extra_response_data;
1097                     res->extraResponseData_len = strlen(rr.extra_response_data);
1098                 }
1099                 if (rr.estimated_hit_count || rr.partial_resultset)
1100                 {
1101                     yaz_add_srw_diagnostic(
1102                         assoc->encode,
1103                         &srw_res->diagnostics,
1104                         &srw_res->num_diagnostics,
1105                         YAZ_SRW_RESULT_SET_CREATED_WITH_VALID_PARTIAL_RESULTS_AVAILABLE,
1106                         0);
1107                 }
1108             }
1109         }
1110     }
1111     if (log_request)
1112     {
1113         const char *querystr = "?";
1114         const char *querytype = "?";
1115         WRBUF wr = wrbuf_alloc();
1116
1117         switch (srw_req->query_type)
1118         {
1119         case Z_SRW_query_type_cql:
1120             querytype = "CQL";
1121             querystr = srw_req->query.cql;
1122             break;
1123         case Z_SRW_query_type_pqf:
1124             querytype = "PQF";
1125             querystr = srw_req->query.pqf;
1126             break;
1127         }
1128         wrbuf_printf(wr, "SRWSearch %s ", srw_req->database);
1129         if (srw_res->num_diagnostics)
1130             wrbuf_printf(wr, "ERROR %s", srw_res->diagnostics[0].uri);
1131         else if (*http_code != 200)
1132             wrbuf_printf(wr, "ERROR info:http/%d", *http_code);
1133         else if (srw_res->numberOfRecords)
1134         {
1135             wrbuf_printf(wr, "OK " ODR_INT_PRINTF,
1136                          (srw_res->numberOfRecords ?
1137                           *srw_res->numberOfRecords : 0));
1138         }
1139         wrbuf_printf(wr, " %s " ODR_INT_PRINTF " +%d",
1140                      (srw_res->resultSetId ?
1141                       srw_res->resultSetId : "-"),
1142                      (srw_req->startRecord ? *srw_req->startRecord : 1),
1143                      srw_res->num_records);
1144         yaz_log(log_request, "%s %s: %s", wrbuf_cstr(wr), querytype, querystr);
1145         wrbuf_destroy(wr);
1146     }
1147 }
1148
1149 static char *srw_bend_explain_default(void *handle, bend_explain_rr *rr)
1150 {
1151 #if YAZ_HAVE_XML2
1152     xmlNodePtr ptr = (xmlNode *) rr->server_node_ptr;
1153     if (!ptr)
1154         return 0;
1155     for (ptr = ptr->children; ptr; ptr = ptr->next)
1156     {
1157         if (ptr->type != XML_ELEMENT_NODE)
1158             continue;
1159         if (!strcmp((const char *) ptr->name, "explain"))
1160         {
1161             int len;
1162             xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
1163             xmlChar *buf_out;
1164             char *content;
1165
1166             ptr = xmlCopyNode(ptr, 1);
1167
1168             xmlDocSetRootElement(doc, ptr);
1169
1170             xmlDocDumpMemory(doc, &buf_out, &len);
1171             content = (char*) odr_malloc(rr->stream, 1+len);
1172             memcpy(content, buf_out, len);
1173             content[len] = '\0';
1174
1175             xmlFree(buf_out);
1176             xmlFreeDoc(doc);
1177             rr->explain_buf = content;
1178             return 0;
1179         }
1180     }
1181 #endif
1182     return 0;
1183 }
1184
1185 static void srw_bend_explain(association *assoc, request *req,
1186                              Z_SRW_PDU *sr,
1187                              Z_SRW_explainResponse *srw_res,
1188                              int *http_code)
1189 {
1190     Z_SRW_explainRequest *srw_req = sr->u.explain_request;
1191     yaz_log(log_requestdetail, "Got SRW ExplainRequest");
1192     *http_code = 404;
1193     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1194     if (assoc->init)
1195     {
1196         bend_explain_rr rr;
1197
1198         rr.stream = assoc->encode;
1199         rr.decode = assoc->decode;
1200         rr.print = assoc->print;
1201         rr.explain_buf = 0;
1202         rr.database = srw_req->database;
1203         if (assoc->server)
1204             rr.server_node_ptr = assoc->server->server_node_ptr;
1205         else
1206             rr.server_node_ptr = 0;
1207         rr.schema = "http://explain.z3950.org/dtd/2.0/";
1208         if (assoc->init->bend_explain)
1209             (*assoc->init->bend_explain)(assoc->backend, &rr);
1210         else
1211             srw_bend_explain_default(assoc->backend, &rr);
1212
1213         if (rr.explain_buf)
1214         {
1215             int packing = Z_SRW_recordPacking_string;
1216             if (srw_req->recordPacking)
1217             {
1218                 packing =
1219                     yaz_srw_str_to_pack(srw_req->recordPacking);
1220                 if (packing == -1)
1221                     packing = Z_SRW_recordPacking_string;
1222             }
1223             srw_res->record.recordSchema = rr.schema;
1224             srw_res->record.recordPacking = packing;
1225             srw_res->record.recordData_buf = rr.explain_buf;
1226             srw_res->record.recordData_len = strlen(rr.explain_buf);
1227             srw_res->record.recordPosition = 0;
1228             *http_code = 200;
1229         }
1230     }
1231 }
1232
1233 static void srw_bend_scan(association *assoc, request *req,
1234                           Z_SRW_PDU *sr,
1235                           Z_SRW_scanResponse *srw_res,
1236                           int *http_code)
1237 {
1238     Z_SRW_scanRequest *srw_req = sr->u.scan_request;
1239     yaz_log(log_requestdetail, "Got SRW ScanRequest");
1240
1241     *http_code = 200;
1242     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1243     if (srw_res->num_diagnostics == 0 && assoc->init)
1244     {
1245         struct scan_entry *save_entries;
1246
1247         bend_scan_rr *bsrr = (bend_scan_rr *)
1248             odr_malloc(assoc->encode, sizeof(*bsrr));
1249         bsrr->num_bases = 1;
1250         bsrr->basenames = &srw_req->database;
1251
1252         bsrr->num_entries = srw_req->maximumTerms ?
1253             *srw_req->maximumTerms : 10;
1254         bsrr->term_position = srw_req->responsePosition ?
1255             *srw_req->responsePosition : 1;
1256
1257         bsrr->errcode = 0;
1258         bsrr->errstring = 0;
1259         bsrr->referenceId = 0;
1260         bsrr->stream = assoc->encode;
1261         bsrr->print = assoc->print;
1262         bsrr->step_size = odr_intdup(assoc->decode, 0);
1263         bsrr->entries = 0;
1264         bsrr->setname = 0;
1265
1266         if (bsrr->num_entries > 0)
1267         {
1268             int i;
1269             bsrr->entries = (struct scan_entry *)
1270                 odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
1271                            bsrr->num_entries);
1272             for (i = 0; i<bsrr->num_entries; i++)
1273             {
1274                 bsrr->entries[i].term = 0;
1275                 bsrr->entries[i].occurrences = 0;
1276                 bsrr->entries[i].errcode = 0;
1277                 bsrr->entries[i].errstring = 0;
1278                 bsrr->entries[i].display_term = 0;
1279             }
1280         }
1281         save_entries = bsrr->entries;  /* save it so we can compare later */
1282
1283         if (srw_req->query_type == Z_SRW_query_type_pqf &&
1284             assoc->init->bend_scan)
1285         {
1286             YAZ_PQF_Parser pqf_parser = yaz_pqf_create();
1287
1288             bsrr->term = yaz_pqf_scan(pqf_parser, assoc->decode,
1289                                       &bsrr->attributeset,
1290                                       srw_req->scanClause.pqf);
1291             yaz_pqf_destroy(pqf_parser);
1292             bsrr->scanClause = 0;
1293             ((int (*)(void *, bend_scan_rr *))
1294              (*assoc->init->bend_scan))(assoc->backend, bsrr);
1295         }
1296         else if (srw_req->query_type == Z_SRW_query_type_cql
1297                  && assoc->init->bend_scan && assoc->server
1298                  && assoc->server->cql_transform)
1299         {
1300             int srw_error;
1301             bsrr->scanClause = 0;
1302             bsrr->attributeset = 0;
1303             bsrr->term = (Z_AttributesPlusTerm *)
1304                 odr_malloc(assoc->decode, sizeof(*bsrr->term));
1305             srw_error = cql2pqf_scan(assoc->encode,
1306                                      srw_req->scanClause.cql,
1307                                      assoc->server->cql_transform,
1308                                      bsrr->term);
1309             if (srw_error)
1310                 yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1311                                        &srw_res->num_diagnostics,
1312                                        srw_error, 0);
1313             else
1314             {
1315                 ((int (*)(void *, bend_scan_rr *))
1316                  (*assoc->init->bend_scan))(assoc->backend, bsrr);
1317             }
1318         }
1319         else if (srw_req->query_type == Z_SRW_query_type_cql
1320                  && assoc->init->bend_srw_scan)
1321         {
1322             bsrr->term = 0;
1323             bsrr->attributeset = 0;
1324             bsrr->scanClause = srw_req->scanClause.cql;
1325             ((int (*)(void *, bend_scan_rr *))
1326              (*assoc->init->bend_srw_scan))(assoc->backend, bsrr);
1327         }
1328         else
1329         {
1330             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1331                                    &srw_res->num_diagnostics,
1332                                    YAZ_SRW_UNSUPP_OPERATION, "scan");
1333         }
1334         if (bsrr->errcode)
1335         {
1336             int srw_error;
1337             if (bsrr->errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
1338             {
1339                 *http_code = 404;
1340                 return;
1341             }
1342             srw_error = yaz_diag_bib1_to_srw(bsrr->errcode);
1343
1344             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1345                                    &srw_res->num_diagnostics,
1346                                    srw_error, bsrr->errstring);
1347         }
1348         else if (srw_res->num_diagnostics == 0 && bsrr->num_entries)
1349         {
1350             int i;
1351             srw_res->terms = (Z_SRW_scanTerm*)
1352                 odr_malloc(assoc->encode, sizeof(*srw_res->terms) *
1353                            bsrr->num_entries);
1354
1355             srw_res->num_terms =  bsrr->num_entries;
1356             for (i = 0; i<bsrr->num_entries; i++)
1357             {
1358                 Z_SRW_scanTerm *t = srw_res->terms + i;
1359                 t->value = odr_strdup(assoc->encode, bsrr->entries[i].term);
1360                 t->numberOfRecords =
1361                     odr_intdup(assoc->encode, bsrr->entries[i].occurrences);
1362                 t->displayTerm = 0;
1363                 if (save_entries == bsrr->entries &&
1364                     bsrr->entries[i].display_term)
1365                 {
1366                     /* the entries was _not_ set by the handler. So it's
1367                        safe to test for new member display_term. It is
1368                        NULL'ed by us.
1369                     */
1370                     t->displayTerm = odr_strdup(assoc->encode,
1371                                                 bsrr->entries[i].display_term);
1372                 }
1373                 t->whereInList = 0;
1374             }
1375         }
1376     }
1377     if (log_request)
1378     {
1379         WRBUF wr = wrbuf_alloc();
1380         const char *querytype = 0;
1381         const char *querystr = 0;
1382
1383         switch(srw_req->query_type)
1384         {
1385         case Z_SRW_query_type_pqf:
1386             querytype = "PQF";
1387             querystr = srw_req->scanClause.pqf;
1388             break;
1389         case Z_SRW_query_type_cql:
1390             querytype = "CQL";
1391             querystr = srw_req->scanClause.cql;
1392             break;
1393         default:
1394             querytype = "UNKNOWN";
1395             querystr = "";
1396         }
1397
1398         wrbuf_printf(wr, "SRWScan %s ", srw_req->database);
1399
1400         if (srw_res->num_diagnostics)
1401             wrbuf_printf(wr, "ERROR %s - ", srw_res->diagnostics[0].uri);
1402         else if (srw_res->num_terms)
1403             wrbuf_printf(wr, "OK %d - ", srw_res->num_terms);
1404         else
1405             wrbuf_printf(wr, "OK - - ");
1406
1407         wrbuf_printf(wr, ODR_INT_PRINTF "+" ODR_INT_PRINTF " ",
1408                      (srw_req->responsePosition ?
1409                       *srw_req->responsePosition : 1),
1410                      (srw_req->maximumTerms ?
1411                       *srw_req->maximumTerms : 1));
1412         /* there is no step size in SRU/W ??? */
1413         wrbuf_printf(wr, "%s: %s ", querytype, querystr);
1414         yaz_log(log_request, "%s ", wrbuf_cstr(wr) );
1415         wrbuf_destroy(wr);
1416     }
1417
1418 }
1419
1420 static void srw_bend_update(association *assoc, request *req,
1421                             Z_SRW_PDU *sr,
1422                             Z_SRW_updateResponse *srw_res,
1423                             int *http_code)
1424 {
1425     Z_SRW_updateRequest *srw_req = sr->u.update_request;
1426     yaz_log(log_session, "SRWUpdate action=%s", srw_req->operation);
1427     yaz_log(YLOG_DEBUG, "num_diag = %d", srw_res->num_diagnostics );
1428     *http_code = 404;
1429     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1430     if (assoc->init)
1431     {
1432         bend_update_rr rr;
1433         Z_SRW_extra_record *extra = srw_req->extra_record;
1434
1435         rr.stream = assoc->encode;
1436         rr.print = assoc->print;
1437         rr.num_bases = 1;
1438         rr.basenames = &srw_req->database;
1439         rr.operation = srw_req->operation;
1440         rr.operation_status = "failed";
1441         rr.record_id = 0;
1442         rr.record_versions = 0;
1443         rr.num_versions = 0;
1444         rr.record_packing = "string";
1445         rr.record_schema = 0;
1446         rr.record_data = 0;
1447         rr.extra_record_data = 0;
1448         rr.extra_request_data = 0;
1449         rr.extra_response_data = 0;
1450         rr.uri = 0;
1451         rr.message = 0;
1452         rr.details = 0;
1453
1454         *http_code = 200;
1455         if (rr.operation == 0)
1456         {
1457             yaz_add_sru_update_diagnostic(
1458                 assoc->encode, &srw_res->diagnostics,
1459                 &srw_res->num_diagnostics,
1460                 YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1461                 "action" );
1462             return;
1463         }
1464         yaz_log(YLOG_DEBUG, "basename = %s", rr.basenames[0] );
1465         yaz_log(YLOG_DEBUG, "Operation = %s", rr.operation );
1466         if (!strcmp( rr.operation, "delete"))
1467         {
1468             if (srw_req->record && !srw_req->record->recordSchema)
1469             {
1470                 rr.record_schema = odr_strdup(
1471                     assoc->encode,
1472                     srw_req->record->recordSchema);
1473             }
1474             if (srw_req->record)
1475             {
1476                 rr.record_data = odr_strdupn(
1477                     assoc->encode,
1478                     srw_req->record->recordData_buf,
1479                     srw_req->record->recordData_len );
1480             }
1481             if (extra && extra->extraRecordData_len)
1482             {
1483                 rr.extra_record_data = odr_strdupn(
1484                     assoc->encode,
1485                     extra->extraRecordData_buf,
1486                     extra->extraRecordData_len );
1487             }
1488             if (srw_req->recordId)
1489                 rr.record_id = srw_req->recordId;
1490             else if (extra && extra->recordIdentifier)
1491                 rr.record_id = extra->recordIdentifier;
1492         }
1493         else if (!strcmp(rr.operation, "replace"))
1494         {
1495             if (srw_req->recordId)
1496                 rr.record_id = srw_req->recordId;
1497             else if (extra && extra->recordIdentifier)
1498                 rr.record_id = extra->recordIdentifier;
1499             else
1500             {
1501                 yaz_add_sru_update_diagnostic(
1502                     assoc->encode, &srw_res->diagnostics,
1503                     &srw_res->num_diagnostics,
1504                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1505                     "recordIdentifier");
1506             }
1507             if (!srw_req->record)
1508             {
1509                 yaz_add_sru_update_diagnostic(
1510                     assoc->encode, &srw_res->diagnostics,
1511                     &srw_res->num_diagnostics,
1512                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1513                     "record");
1514             }
1515             else
1516             {
1517                 if (srw_req->record->recordSchema)
1518                     rr.record_schema = odr_strdup(
1519                         assoc->encode, srw_req->record->recordSchema);
1520                 if (srw_req->record->recordData_len )
1521                 {
1522                     rr.record_data = odr_strdupn(assoc->encode,
1523                                                  srw_req->record->recordData_buf,
1524                                                  srw_req->record->recordData_len );
1525                 }
1526                 else
1527                 {
1528                     yaz_add_sru_update_diagnostic(
1529                         assoc->encode, &srw_res->diagnostics,
1530                         &srw_res->num_diagnostics,
1531                         YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1532                         "recordData" );
1533                 }
1534             }
1535             if (extra && extra->extraRecordData_len)
1536             {
1537                 rr.extra_record_data = odr_strdupn(
1538                     assoc->encode,
1539                     extra->extraRecordData_buf,
1540                     extra->extraRecordData_len );
1541             }
1542         }
1543         else if (!strcmp(rr.operation, "insert"))
1544         {
1545             if (srw_req->recordId)
1546                 rr.record_id = srw_req->recordId;
1547             else if (extra)
1548                 rr.record_id = extra->recordIdentifier;
1549
1550             if (srw_req->record)
1551             {
1552                 if (srw_req->record->recordSchema)
1553                     rr.record_schema = odr_strdup(
1554                         assoc->encode, srw_req->record->recordSchema);
1555
1556                 if (srw_req->record->recordData_len)
1557                     rr.record_data = odr_strdupn(
1558                         assoc->encode,
1559                         srw_req->record->recordData_buf,
1560                         srw_req->record->recordData_len );
1561             }
1562             if (extra && extra->extraRecordData_len)
1563             {
1564                 rr.extra_record_data = odr_strdupn(
1565                     assoc->encode,
1566                     extra->extraRecordData_buf,
1567                     extra->extraRecordData_len );
1568             }
1569         }
1570         else
1571             yaz_add_sru_update_diagnostic(assoc->encode, &srw_res->diagnostics,
1572                                           &srw_res->num_diagnostics,
1573                                           YAZ_SRU_UPDATE_INVALID_ACTION,
1574                                           rr.operation );
1575
1576         if (srw_req->record)
1577         {
1578             const char *pack_str =
1579                 yaz_srw_pack_to_str(srw_req->record->recordPacking);
1580             if (pack_str)
1581                 rr.record_packing = odr_strdup(assoc->encode, pack_str);
1582         }
1583
1584         if (srw_req->num_recordVersions)
1585         {
1586             rr.record_versions = srw_req->recordVersions;
1587             rr.num_versions = srw_req->num_recordVersions;
1588         }
1589         if (srw_req->extraRequestData_len)
1590         {
1591             rr.extra_request_data = odr_strdupn(assoc->encode,
1592                                                 srw_req->extraRequestData_buf,
1593                                                 srw_req->extraRequestData_len );
1594         }
1595         if (srw_res->num_diagnostics == 0)
1596         {
1597             if ( assoc->init->bend_srw_update)
1598                 (*assoc->init->bend_srw_update)(assoc->backend, &rr);
1599             else
1600                 yaz_add_sru_update_diagnostic(
1601                     assoc->encode, &srw_res->diagnostics,
1602                     &srw_res->num_diagnostics,
1603                     YAZ_SRU_UPDATE_UNSPECIFIED_DATABASE_ERROR,
1604                     "No Update backend handler");
1605         }
1606
1607         if (rr.uri)
1608             yaz_add_srw_diagnostic_uri(assoc->encode,
1609                                        &srw_res->diagnostics,
1610                                        &srw_res->num_diagnostics,
1611                                        rr.uri,
1612                                        rr.message,
1613                                        rr.details);
1614         srw_res->recordId = rr.record_id;
1615         srw_res->operationStatus = rr.operation_status;
1616         srw_res->recordVersions = rr.record_versions;
1617         srw_res->num_recordVersions = rr.num_versions;
1618         if (srw_res->extraResponseData_len)
1619         {
1620             srw_res->extraResponseData_buf = rr.extra_response_data;
1621             srw_res->extraResponseData_len = strlen(rr.extra_response_data);
1622         }
1623         if (srw_res->num_diagnostics == 0 && rr.record_data)
1624         {
1625             srw_res->record = yaz_srw_get_record(assoc->encode);
1626             srw_res->record->recordSchema = rr.record_schema;
1627             if (rr.record_packing)
1628             {
1629                 int pack = yaz_srw_str_to_pack(rr.record_packing);
1630
1631                 if (pack == -1)
1632                 {
1633                     pack = Z_SRW_recordPacking_string;
1634                     yaz_log(YLOG_WARN, "Back packing %s from backend",
1635                             rr.record_packing);
1636                 }
1637                 srw_res->record->recordPacking = pack;
1638             }
1639             srw_res->record->recordData_buf = rr.record_data;
1640             srw_res->record->recordData_len = strlen(rr.record_data);
1641             if (rr.extra_record_data)
1642             {
1643                 Z_SRW_extra_record *ex =
1644                     yaz_srw_get_extra_record(assoc->encode);
1645                 srw_res->extra_record = ex;
1646                 ex->extraRecordData_buf = rr.extra_record_data;
1647                 ex->extraRecordData_len = strlen(rr.extra_record_data);
1648             }
1649         }
1650     }
1651 }
1652
1653 /* check if path is OK (1); BAD (0) */
1654 static int check_path(const char *path)
1655 {
1656     if (*path != '/')
1657         return 0;
1658     if (strstr(path, ".."))
1659         return 0;
1660     return 1;
1661 }
1662
1663 static char *read_file(const char *fname, ODR o, size_t *sz)
1664 {
1665     char *buf;
1666     FILE *inf = fopen(fname, "rb");
1667     if (!inf)
1668         return 0;
1669
1670     fseek(inf, 0L, SEEK_END);
1671     *sz = ftell(inf);
1672     rewind(inf);
1673     buf = (char *) odr_malloc(o, *sz);
1674     if (fread(buf, 1, *sz, inf) != *sz)
1675         yaz_log(YLOG_WARN|YLOG_ERRNO, "short read %s", fname);
1676     fclose(inf);
1677     return buf;
1678 }
1679
1680 static void process_http_request(association *assoc, request *req)
1681 {
1682     Z_HTTP_Request *hreq = req->gdu_request->u.HTTP_Request;
1683     ODR o = assoc->encode;
1684     int r = 2;  /* 2=NOT TAKEN, 1=TAKEN, 0=SOAP TAKEN */
1685     Z_SRW_PDU *sr = 0;
1686     Z_SOAP *soap_package = 0;
1687     Z_GDU *p = 0;
1688     char *charset = 0;
1689     Z_HTTP_Response *hres = 0;
1690     int keepalive = 1;
1691     const char *stylesheet = 0; /* for now .. set later */
1692     Z_SRW_diagnostic *diagnostic = 0;
1693     int num_diagnostic = 0;
1694     const char *host = z_HTTP_header_lookup(hreq->headers, "Host");
1695
1696     yaz_log(log_request, "%s %s HTTP/%s", hreq->method, hreq->path, hreq->version);
1697     if (!control_association(assoc, host, 0))
1698     {
1699         p = z_get_HTTP_Response(o, 404);
1700         r = 1;
1701     }
1702     if (r == 2 && assoc->server && assoc->server->docpath
1703         && hreq->path[0] == '/'
1704         &&
1705         /* check if path is a proper prefix of documentroot */
1706         strncmp(hreq->path+1, assoc->server->docpath,
1707                 strlen(assoc->server->docpath))
1708         == 0)
1709     {
1710         if (!check_path(hreq->path))
1711         {
1712             yaz_log(YLOG_LOG, "File %s access forbidden", hreq->path+1);
1713             p = z_get_HTTP_Response(o, 404);
1714         }
1715         else
1716         {
1717             size_t content_size = 0;
1718             char *content_buf = read_file(hreq->path+1, o, &content_size);
1719             if (!content_buf)
1720             {
1721                 yaz_log(YLOG_LOG, "File %s not found", hreq->path+1);
1722                 p = z_get_HTTP_Response(o, 404);
1723             }
1724             else
1725             {
1726                 const char *ctype = 0;
1727                 yaz_mime_types types = yaz_mime_types_create();
1728
1729                 yaz_mime_types_add(types, "xsl", "application/xml");
1730                 yaz_mime_types_add(types, "xml", "application/xml");
1731                 yaz_mime_types_add(types, "css", "text/css");
1732                 yaz_mime_types_add(types, "html", "text/html");
1733                 yaz_mime_types_add(types, "htm", "text/html");
1734                 yaz_mime_types_add(types, "txt", "text/plain");
1735                 yaz_mime_types_add(types, "js", "application/x-javascript");
1736
1737                 yaz_mime_types_add(types, "gif", "image/gif");
1738                 yaz_mime_types_add(types, "png", "image/png");
1739                 yaz_mime_types_add(types, "jpg", "image/jpeg");
1740                 yaz_mime_types_add(types, "jpeg", "image/jpeg");
1741
1742                 ctype = yaz_mime_lookup_fname(types, hreq->path);
1743                 if (!ctype)
1744                 {
1745                     yaz_log(YLOG_LOG, "No mime type for %s", hreq->path+1);
1746                     p = z_get_HTTP_Response(o, 404);
1747                 }
1748                 else
1749                 {
1750                     p = z_get_HTTP_Response(o, 200);
1751                     hres = p->u.HTTP_Response;
1752                     hres->content_buf = content_buf;
1753                     hres->content_len = content_size;
1754                     z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1755                 }
1756                 yaz_mime_types_destroy(types);
1757             }
1758         }
1759         r = 1;
1760     }
1761
1762     if (r == 2)
1763     {
1764         r = yaz_srw_decode(hreq, &sr, &soap_package, assoc->decode, &charset);
1765         yaz_log(YLOG_DEBUG, "yaz_srw_decode returned %d", r);
1766     }
1767     if (r == 2)  /* not taken */
1768     {
1769         r = yaz_sru_decode(hreq, &sr, &soap_package, assoc->decode, &charset,
1770                            &diagnostic, &num_diagnostic);
1771         yaz_log(YLOG_DEBUG, "yaz_sru_decode returned %d", r);
1772     }
1773     if (r == 0)  /* decode SRW/SRU OK .. */
1774     {
1775         int http_code = 200;
1776         if (sr->which == Z_SRW_searchRetrieve_request)
1777         {
1778             Z_SRW_PDU *res =
1779                 yaz_srw_get_pdu(assoc->encode, Z_SRW_searchRetrieve_response,
1780                                 sr->srw_version);
1781             stylesheet = sr->u.request->stylesheet;
1782             if (num_diagnostic)
1783             {
1784                 res->u.response->diagnostics = diagnostic;
1785                 res->u.response->num_diagnostics = num_diagnostic;
1786             }
1787             else
1788             {
1789                 srw_bend_search(assoc, req, sr, res, &http_code);
1790             }
1791             if (http_code == 200)
1792                 soap_package->u.generic->p = res;
1793         }
1794         else if (sr->which == Z_SRW_explain_request)
1795         {
1796             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_explain_response,
1797                                              sr->srw_version);
1798             stylesheet = sr->u.explain_request->stylesheet;
1799             if (num_diagnostic)
1800             {
1801                 res->u.explain_response->diagnostics = diagnostic;
1802                 res->u.explain_response->num_diagnostics = num_diagnostic;
1803             }
1804             srw_bend_explain(assoc, req, sr,
1805                              res->u.explain_response, &http_code);
1806             if (http_code == 200)
1807                 soap_package->u.generic->p = res;
1808         }
1809         else if (sr->which == Z_SRW_scan_request)
1810         {
1811             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_scan_response,
1812                                              sr->srw_version);
1813             stylesheet = sr->u.scan_request->stylesheet;
1814             if (num_diagnostic)
1815             {
1816                 res->u.scan_response->diagnostics = diagnostic;
1817                 res->u.scan_response->num_diagnostics = num_diagnostic;
1818             }
1819             srw_bend_scan(assoc, req, sr,
1820                           res->u.scan_response, &http_code);
1821             if (http_code == 200)
1822                 soap_package->u.generic->p = res;
1823         }
1824         else if (sr->which == Z_SRW_update_request)
1825         {
1826             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_update_response,
1827                                              sr->srw_version);
1828             yaz_log(YLOG_DEBUG, "handling SRW UpdateRequest");
1829             if (num_diagnostic)
1830             {
1831                 res->u.update_response->diagnostics = diagnostic;
1832                 res->u.update_response->num_diagnostics = num_diagnostic;
1833             }
1834             yaz_log(YLOG_DEBUG, "num_diag = %d", res->u.update_response->num_diagnostics );
1835             srw_bend_update(assoc, req, sr,
1836                             res->u.update_response, &http_code);
1837             if (http_code == 200)
1838                 soap_package->u.generic->p = res;
1839         }
1840         else
1841         {
1842             yaz_log(log_request, "SOAP ERROR");
1843             /* FIXME - what error, what query */
1844             http_code = 500;
1845             z_soap_error(assoc->encode, soap_package,
1846                          "SOAP-ENV:Client", "Bad method", 0);
1847         }
1848         if (http_code == 200 || http_code == 500)
1849         {
1850             static Z_SOAP_Handler soap_handlers[4] = {
1851 #if YAZ_HAVE_XML2
1852                 {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
1853                 {YAZ_XMLNS_SRU_v1_0, 0, (Z_SOAP_fun) yaz_srw_codec},
1854                 {YAZ_XMLNS_UPDATE_v0_9, 0, (Z_SOAP_fun) yaz_ucp_codec},
1855 #endif
1856                 {0, 0, 0}
1857             };
1858             char ctype[80];
1859             int ret;
1860             p = z_get_HTTP_Response(o, 200);
1861             hres = p->u.HTTP_Response;
1862
1863             if (!stylesheet && assoc->server)
1864                 stylesheet = assoc->server->stylesheet;
1865
1866             /* empty stylesheet means NO stylesheet */
1867             if (stylesheet && *stylesheet == '\0')
1868                 stylesheet = 0;
1869
1870             ret = z_soap_codec_enc_xsl(assoc->encode, &soap_package,
1871                                        &hres->content_buf, &hres->content_len,
1872                                        soap_handlers, charset, stylesheet);
1873             hres->code = http_code;
1874
1875             strcpy(ctype, "text/xml");
1876             if (charset && strlen(charset) < sizeof(ctype)-30)
1877             {
1878                 strcat(ctype, "; charset=");
1879                 strcat(ctype, charset);
1880             }
1881             z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1882         }
1883         else
1884             p = z_get_HTTP_Response(o, http_code);
1885     }
1886
1887     if (p == 0)
1888         p = z_get_HTTP_Response(o, 500);
1889     hres = p->u.HTTP_Response;
1890     if (!strcmp(hreq->version, "1.0"))
1891     {
1892         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1893         if (v && !strcmp(v, "Keep-Alive"))
1894             keepalive = 1;
1895         else
1896             keepalive = 0;
1897         hres->version = "1.0";
1898     }
1899     else
1900     {
1901         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1902         if (v && !strcmp(v, "close"))
1903             keepalive = 0;
1904         else
1905             keepalive = 1;
1906         hres->version = "1.1";
1907     }
1908     if (!keepalive)
1909     {
1910         z_HTTP_header_add(o, &hres->headers, "Connection", "close");
1911         assoc->state = ASSOC_DEAD;
1912         assoc->cs_get_mask = 0;
1913     }
1914     else
1915     {
1916         int t;
1917         const char *alive = z_HTTP_header_lookup(hreq->headers, "Keep-Alive");
1918
1919         if (alive && isdigit(*(const unsigned char *) alive))
1920             t = atoi(alive);
1921         else
1922             t = 15;
1923         if (t < 0 || t > 3600)
1924             t = 3600;
1925         iochan_settimeout(assoc->client_chan,t);
1926         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
1927     }
1928     process_gdu_response(assoc, req, p);
1929 }
1930
1931 static void process_gdu_request(association *assoc, request *req)
1932 {
1933     if (req->gdu_request->which == Z_GDU_Z3950)
1934     {
1935         char *msg = 0;
1936         req->apdu_request = req->gdu_request->u.z3950;
1937         if (process_z_request(assoc, req, &msg) < 0)
1938             do_close_req(assoc, Z_Close_systemProblem, msg, req);
1939     }
1940     else if (req->gdu_request->which == Z_GDU_HTTP_Request)
1941         process_http_request(assoc, req);
1942     else
1943     {
1944         do_close_req(assoc, Z_Close_systemProblem, "bad protocol packet", req);
1945     }
1946 }
1947
1948 /*
1949  * Initiate request processing.
1950  */
1951 static int process_z_request(association *assoc, request *req, char **msg)
1952 {
1953     int fd = -1;
1954     Z_APDU *res;
1955     int retval;
1956
1957     *msg = "Unknown Error";
1958     assert(req && req->state == REQUEST_IDLE);
1959     if (req->apdu_request->which != Z_APDU_initRequest && !assoc->init)
1960     {
1961         *msg = "Missing InitRequest";
1962         return -1;
1963     }
1964     switch (req->apdu_request->which)
1965     {
1966     case Z_APDU_initRequest:
1967         res = process_initRequest(assoc, req); break;
1968     case Z_APDU_searchRequest:
1969         res = process_searchRequest(assoc, req, &fd); break;
1970     case Z_APDU_presentRequest:
1971         res = process_presentRequest(assoc, req, &fd); break;
1972     case Z_APDU_scanRequest:
1973         if (assoc->init->bend_scan)
1974             res = process_scanRequest(assoc, req, &fd);
1975         else
1976         {
1977             *msg = "Cannot handle Scan APDU";
1978             return -1;
1979         }
1980         break;
1981     case Z_APDU_extendedServicesRequest:
1982         if (assoc->init->bend_esrequest)
1983             res = process_ESRequest(assoc, req, &fd);
1984         else
1985         {
1986             *msg = "Cannot handle Extended Services APDU";
1987             return -1;
1988         }
1989         break;
1990     case Z_APDU_sortRequest:
1991         if (assoc->init->bend_sort)
1992             res = process_sortRequest(assoc, req, &fd);
1993         else
1994         {
1995             *msg = "Cannot handle Sort APDU";
1996             return -1;
1997         }
1998         break;
1999     case Z_APDU_close:
2000         process_close(assoc, req);
2001         return 0;
2002     case Z_APDU_deleteResultSetRequest:
2003         if (assoc->init->bend_delete)
2004             res = process_deleteRequest(assoc, req, &fd);
2005         else
2006         {
2007             *msg = "Cannot handle Delete APDU";
2008             return -1;
2009         }
2010         break;
2011     case Z_APDU_segmentRequest:
2012         if (assoc->init->bend_segment)
2013         {
2014             res = process_segmentRequest(assoc, req);
2015         }
2016         else
2017         {
2018             *msg = "Cannot handle Segment APDU";
2019             return -1;
2020         }
2021         break;
2022     case Z_APDU_triggerResourceControlRequest:
2023         return 0;
2024     default:
2025         *msg = "Bad APDU received";
2026         return -1;
2027     }
2028     if (res)
2029     {
2030         yaz_log(YLOG_DEBUG, "  result immediately available");
2031         retval = process_z_response(assoc, req, res);
2032     }
2033     else if (fd < 0)
2034     {
2035         yaz_log(YLOG_DEBUG, "  result unavailble");
2036         retval = 0;
2037     }
2038     else /* no result yet - one will be provided later */
2039     {
2040         IOCHAN chan;
2041
2042         /* Set up an I/O handler for the fd supplied by the backend */
2043
2044         yaz_log(YLOG_DEBUG, "   establishing handler for result");
2045         req->state = REQUEST_PENDING;
2046         if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT, 0)))
2047             abort();
2048         iochan_setdata(chan, assoc);
2049         retval = 0;
2050     }
2051     return retval;
2052 }
2053
2054 /*
2055  * Handle message from the backend.
2056  */
2057 void backend_response(IOCHAN i, int event)
2058 {
2059     association *assoc = (association *)iochan_getdata(i);
2060     request *req = request_head(&assoc->incoming);
2061     Z_APDU *res;
2062     int fd;
2063
2064     yaz_log(YLOG_DEBUG, "backend_response");
2065     assert(assoc && req && req->state != REQUEST_IDLE);
2066     /* determine what it is we're waiting for */
2067     switch (req->apdu_request->which)
2068     {
2069         case Z_APDU_searchRequest:
2070             res = response_searchRequest(assoc, req, 0, &fd); break;
2071 #if 0
2072         case Z_APDU_presentRequest:
2073             res = response_presentRequest(assoc, req, 0, &fd); break;
2074         case Z_APDU_scanRequest:
2075             res = response_scanRequest(assoc, req, 0, &fd); break;
2076 #endif
2077         default:
2078             yaz_log(YLOG_FATAL, "Serious programmer's lapse or bug");
2079             abort();
2080     }
2081     if ((res && process_z_response(assoc, req, res) < 0) || fd < 0)
2082     {
2083         yaz_log(YLOG_WARN, "Fatal error when talking to backend");
2084         do_close(assoc, Z_Close_systemProblem, 0);
2085         iochan_destroy(i);
2086         return;
2087     }
2088     else if (!res) /* no result yet - try again later */
2089     {
2090         yaz_log(YLOG_DEBUG, "   no result yet");
2091         iochan_setfd(i, fd); /* in case fd has changed */
2092     }
2093 }
2094
2095 /*
2096  * Encode response, and transfer the request structure to the outgoing queue.
2097  */
2098 static int process_gdu_response(association *assoc, request *req, Z_GDU *res)
2099 {
2100     odr_setbuf(assoc->encode, req->response, req->size_response, 1);
2101
2102     if (assoc->print)
2103     {
2104         if (!z_GDU(assoc->print, &res, 0, 0))
2105             yaz_log(YLOG_WARN, "ODR print error: %s",
2106                 odr_errmsg(odr_geterror(assoc->print)));
2107         odr_reset(assoc->print);
2108     }
2109     if (!z_GDU(assoc->encode, &res, 0, 0))
2110     {
2111         yaz_log(YLOG_WARN, "ODR error when encoding PDU: %s [element %s]",
2112                 odr_errmsg(odr_geterror(assoc->decode)),
2113                 odr_getelement(assoc->decode));
2114         return -1;
2115     }
2116     req->response = odr_getbuf(assoc->encode, &req->len_response,
2117         &req->size_response);
2118     odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
2119     odr_reset(assoc->encode);
2120     req->state = REQUEST_IDLE;
2121     request_enq(&assoc->outgoing, req);
2122     /* turn the work over to the ir_session handler */
2123     iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
2124     assoc->cs_put_mask = EVENT_OUTPUT;
2125     /* Is there more work to be done? give that to the input handler too */
2126     for (;;)
2127     {
2128         req = request_head(&assoc->incoming);
2129         if (req && req->state == REQUEST_IDLE)
2130         {
2131             request_deq(&assoc->incoming);
2132             process_gdu_request(assoc, req);
2133         }
2134         else
2135             break;
2136     }
2137     return 0;
2138 }
2139
2140 /*
2141  * Encode response, and transfer the request structure to the outgoing queue.
2142  */
2143 static int process_z_response(association *assoc, request *req, Z_APDU *res)
2144 {
2145     Z_GDU *gres = (Z_GDU *) odr_malloc(assoc->encode, sizeof(*res));
2146     gres->which = Z_GDU_Z3950;
2147     gres->u.z3950 = res;
2148
2149     return process_gdu_response(assoc, req, gres);
2150 }
2151
2152 static char *get_vhost(Z_OtherInformation *otherInfo)
2153 {
2154     return yaz_oi_get_string_oid(&otherInfo, yaz_oid_userinfo_proxy, 1, 0);
2155 }
2156
2157 /*
2158  * Handle init request.
2159  * At the moment, we don't check the options
2160  * anywhere else in the code - we just try not to do anything that would
2161  * break a naive client. We'll toss 'em into the association block when
2162  * we need them there.
2163  */
2164 static Z_APDU *process_initRequest(association *assoc, request *reqb)
2165 {
2166     Z_InitRequest *req = reqb->apdu_request->u.initRequest;
2167     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
2168     Z_InitResponse *resp = apdu->u.initResponse;
2169     bend_initresult *binitres;
2170     char options[140];
2171     statserv_options_block *cb = 0;  /* by default no control for backend */
2172
2173     if (control_association(assoc, get_vhost(req->otherInfo), 1))
2174         cb = statserv_getcontrol();  /* got control block for backend */
2175
2176     if (cb && assoc->backend)
2177         (*cb->bend_close)(assoc->backend);
2178
2179     yaz_log(log_requestdetail, "Got initRequest");
2180     if (req->implementationId)
2181         yaz_log(log_requestdetail, "Id:        %s",
2182                 req->implementationId);
2183     if (req->implementationName)
2184         yaz_log(log_requestdetail, "Name:      %s",
2185                 req->implementationName);
2186     if (req->implementationVersion)
2187         yaz_log(log_requestdetail, "Version:   %s",
2188                 req->implementationVersion);
2189
2190     assoc_init_reset(assoc);
2191
2192     assoc->init->auth = req->idAuthentication;
2193     assoc->init->referenceId = req->referenceId;
2194
2195     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2196     {
2197         Z_CharSetandLanguageNegotiation *negotiation =
2198             yaz_get_charneg_record (req->otherInfo);
2199         if (negotiation &&
2200             negotiation->which == Z_CharSetandLanguageNegotiation_proposal)
2201             assoc->init->charneg_request = negotiation;
2202     }
2203
2204     /* by default named_result_sets is 0 .. Enable it if client asks for it. */
2205     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
2206         assoc->init->named_result_sets = 1;
2207
2208     assoc->backend = 0;
2209     if (cb)
2210     {
2211         if (req->implementationVersion)
2212             yaz_log(log_requestdetail, "Config:    %s",
2213                     cb->configname);
2214
2215         iochan_settimeout(assoc->client_chan, cb->idle_timeout * 60);
2216
2217         /* we have a backend control block, so call that init function */
2218         if (!(binitres = (*cb->bend_init)(assoc->init)))
2219         {
2220             yaz_log(YLOG_WARN, "Bad response from backend.");
2221             return 0;
2222         }
2223         assoc->backend = binitres->handle;
2224     }
2225     else
2226     {
2227         /* no backend. return error */
2228         binitres = (bend_initresult *)
2229             odr_malloc(assoc->encode, sizeof(*binitres));
2230         binitres->errstring = 0;
2231         binitres->errcode = YAZ_BIB1_PERMANENT_SYSTEM_ERROR;
2232         iochan_settimeout(assoc->client_chan, 10);
2233     }
2234     if ((assoc->init->bend_sort))
2235         yaz_log(YLOG_DEBUG, "Sort handler installed");
2236     if ((assoc->init->bend_search))
2237         yaz_log(YLOG_DEBUG, "Search handler installed");
2238     if ((assoc->init->bend_present))
2239         yaz_log(YLOG_DEBUG, "Present handler installed");
2240     if ((assoc->init->bend_esrequest))
2241         yaz_log(YLOG_DEBUG, "ESRequest handler installed");
2242     if ((assoc->init->bend_delete))
2243         yaz_log(YLOG_DEBUG, "Delete handler installed");
2244     if ((assoc->init->bend_scan))
2245         yaz_log(YLOG_DEBUG, "Scan handler installed");
2246     if ((assoc->init->bend_segment))
2247         yaz_log(YLOG_DEBUG, "Segment handler installed");
2248
2249     resp->referenceId = req->referenceId;
2250     *options = '\0';
2251     /* let's tell the client what we can do */
2252     if (ODR_MASK_GET(req->options, Z_Options_search))
2253     {
2254         ODR_MASK_SET(resp->options, Z_Options_search);
2255         strcat(options, "srch");
2256     }
2257     if (ODR_MASK_GET(req->options, Z_Options_present))
2258     {
2259         ODR_MASK_SET(resp->options, Z_Options_present);
2260         strcat(options, " prst");
2261     }
2262     if (ODR_MASK_GET(req->options, Z_Options_delSet) &&
2263         assoc->init->bend_delete)
2264     {
2265         ODR_MASK_SET(resp->options, Z_Options_delSet);
2266         strcat(options, " del");
2267     }
2268     if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
2269         assoc->init->bend_esrequest)
2270     {
2271         ODR_MASK_SET(resp->options, Z_Options_extendedServices);
2272         strcat(options, " extendedServices");
2273     }
2274     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets)
2275         && assoc->init->named_result_sets)
2276     {
2277         ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
2278         strcat(options, " namedresults");
2279     }
2280     if (ODR_MASK_GET(req->options, Z_Options_scan) && assoc->init->bend_scan)
2281     {
2282         ODR_MASK_SET(resp->options, Z_Options_scan);
2283         strcat(options, " scan");
2284     }
2285     if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
2286     {
2287         ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
2288         strcat(options, " concurrop");
2289     }
2290     if (ODR_MASK_GET(req->options, Z_Options_sort) && assoc->init->bend_sort)
2291     {
2292         ODR_MASK_SET(resp->options, Z_Options_sort);
2293         strcat(options, " sort");
2294     }
2295
2296     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2297     {
2298         Z_OtherInformationUnit *p0;
2299
2300         if (!assoc->init->charneg_response)
2301         {
2302             if (assoc->init->query_charset)
2303             {
2304                 assoc->init->charneg_response = yaz_set_response_charneg(
2305                     assoc->encode, assoc->init->query_charset, 0,
2306                     assoc->init->records_in_same_charset);
2307             }
2308             else
2309             {
2310                 yaz_log(YLOG_WARN, "default query_charset not defined by backend");
2311             }
2312         }
2313         if (assoc->init->charneg_response
2314             && (p0=yaz_oi_update(&resp->otherInfo, assoc->encode, NULL, 0, 0)))
2315         {
2316             p0->which = Z_OtherInfo_externallyDefinedInfo;
2317             p0->information.externallyDefinedInfo =
2318                 assoc->init->charneg_response;
2319             ODR_MASK_SET(resp->options, Z_Options_negotiationModel);
2320             strcat(options, " negotiation");
2321         }
2322     }
2323     if (ODR_MASK_GET(req->options, Z_Options_triggerResourceCtrl))
2324         ODR_MASK_SET(resp->options, Z_Options_triggerResourceCtrl);
2325
2326     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
2327     {
2328         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
2329         assoc->version = 1; /* 1 & 2 are equivalent */
2330     }
2331     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
2332     {
2333         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
2334         assoc->version = 2;
2335     }
2336     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
2337     {
2338         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
2339         assoc->version = 3;
2340     }
2341
2342     yaz_log(log_requestdetail, "Negotiated to v%d: %s", assoc->version, options);
2343
2344     if (*req->maximumRecordSize < assoc->maximumRecordSize)
2345         assoc->maximumRecordSize = *req->maximumRecordSize;
2346
2347     if (*req->preferredMessageSize < assoc->preferredMessageSize)
2348         assoc->preferredMessageSize = *req->preferredMessageSize;
2349
2350     resp->preferredMessageSize = &assoc->preferredMessageSize;
2351     resp->maximumRecordSize = &assoc->maximumRecordSize;
2352
2353     resp->implementationId = odr_prepend(assoc->encode,
2354                 assoc->init->implementation_id,
2355                 resp->implementationId);
2356
2357     resp->implementationName = odr_prepend(assoc->encode,
2358                 assoc->init->implementation_name,
2359                 odr_prepend(assoc->encode, "GFS", resp->implementationName));
2360
2361     if (binitres->errcode)
2362     {
2363         assoc->state = ASSOC_DEAD;
2364         resp->userInformationField =
2365             init_diagnostics(assoc->encode, binitres->errcode,
2366                              binitres->errstring);
2367         *resp->result = 0;
2368     }
2369     else
2370         assoc->state = ASSOC_UP;
2371
2372     if (log_request)
2373     {
2374         if (!req->idAuthentication)
2375             yaz_log(log_request, "Auth none");
2376         else if (req->idAuthentication->which == Z_IdAuthentication_open)
2377         {
2378             const char *open = req->idAuthentication->u.open;
2379             const char *slash = strchr(open, '/');
2380             int len;
2381             if (slash)
2382                 len = slash - open;
2383             else
2384                 len = strlen(open);
2385                 yaz_log(log_request, "Auth open %.*s", len, open);
2386         }
2387         else if (req->idAuthentication->which == Z_IdAuthentication_idPass)
2388         {
2389             const char *user = req->idAuthentication->u.idPass->userId;
2390             const char *group = req->idAuthentication->u.idPass->groupId;
2391             yaz_log(log_request, "Auth idPass %s %s",
2392                     user ? user : "-", group ? group : "-");
2393         }
2394         else if (req->idAuthentication->which
2395                  == Z_IdAuthentication_anonymous)
2396         {
2397             yaz_log(log_request, "Auth anonymous");
2398         }
2399         else
2400         {
2401             yaz_log(log_request, "Auth other");
2402         }
2403     }
2404     if (log_request)
2405     {
2406         WRBUF wr = wrbuf_alloc();
2407         wrbuf_printf(wr, "Init ");
2408         if (binitres->errcode)
2409             wrbuf_printf(wr, "ERROR %d", binitres->errcode);
2410         else
2411             wrbuf_printf(wr, "OK -");
2412         wrbuf_printf(wr, " ID:%s Name:%s Version:%s",
2413                      (req->implementationId ? req->implementationId :"-"),
2414                      (req->implementationName ?
2415                       req->implementationName : "-"),
2416                      (req->implementationVersion ?
2417                       req->implementationVersion : "-")
2418             );
2419         yaz_log(log_request, "%s", wrbuf_cstr(wr));
2420         wrbuf_destroy(wr);
2421     }
2422     return apdu;
2423 }
2424
2425 /*
2426  * Set the specified `errcode' and `errstring' into a UserInfo-1
2427  * external to be returned to the client in accordance with Z35.90
2428  * Implementor Agreement 5 (Returning diagnostics in an InitResponse):
2429  *      http://lcweb.loc.gov/z3950/agency/agree/initdiag.html
2430  */
2431 static Z_External *init_diagnostics(ODR odr, int error, const char *addinfo)
2432 {
2433     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2434         addinfo ? " -- " : "", addinfo ? addinfo : "");
2435     return zget_init_diagnostics(odr, error, addinfo);
2436 }
2437
2438 /*
2439  * nonsurrogate diagnostic record.
2440  */
2441 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
2442 {
2443     Z_Records *rec = (Z_Records *) odr_malloc(assoc->encode, sizeof(*rec));
2444
2445     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2446             addinfo ? " -- " : "", addinfo ? addinfo : "");
2447
2448     rec->which = Z_Records_NSD;
2449     rec->u.nonSurrogateDiagnostic = zget_DefaultDiagFormat(assoc->encode,
2450                                                            error, addinfo);
2451     return rec;
2452 }
2453
2454 /*
2455  * surrogate diagnostic.
2456  */
2457 static Z_NamePlusRecord *surrogatediagrec(association *assoc,
2458                                           const char *dbname,
2459                                           int error, const char *addinfo)
2460 {
2461     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2462             addinfo ? " -- " : "", addinfo ? addinfo : "");
2463     return zget_surrogateDiagRec(assoc->encode, dbname, error, addinfo);
2464 }
2465
2466 static Z_Records *pack_records(association *a, char *setname, Odr_int start,
2467                                Odr_int *num, Z_RecordComposition *comp,
2468                                Odr_int *next, Odr_int *pres,
2469                                Z_ReferenceId *referenceId,
2470                                Odr_oid *oid, int *errcode)
2471 {
2472     int recno, total_length = 0, toget = *num, dumped_records = 0;
2473     Z_Records *records =
2474         (Z_Records *) odr_malloc(a->encode, sizeof(*records));
2475     Z_NamePlusRecordList *reclist =
2476         (Z_NamePlusRecordList *) odr_malloc(a->encode, sizeof(*reclist));
2477     Z_NamePlusRecord **list =
2478         (Z_NamePlusRecord **) odr_malloc(a->encode, sizeof(*list) * toget);
2479
2480     records->which = Z_Records_DBOSD;
2481     records->u.databaseOrSurDiagnostics = reclist;
2482     reclist->num_records = 0;
2483     reclist->records = list;
2484     *pres = Z_PresentStatus_success;
2485     *num = 0;
2486     *next = 0;
2487
2488     yaz_log(log_requestdetail, "Request to pack " ODR_INT_PRINTF "+%d %s", start, toget, setname);
2489     yaz_log(log_requestdetail, "pms=" ODR_INT_PRINTF
2490             ", mrs=" ODR_INT_PRINTF, a->preferredMessageSize,
2491         a->maximumRecordSize);
2492     for (recno = start; reclist->num_records < toget; recno++)
2493     {
2494         bend_fetch_rr freq;
2495         Z_NamePlusRecord *thisrec;
2496         int this_length = 0;
2497         /*
2498          * we get the number of bytes allocated on the stream before any
2499          * allocation done by the backend - this should give us a reasonable
2500          * idea of the total size of the data so far.
2501          */
2502         total_length = odr_total(a->encode) - dumped_records;
2503         freq.errcode = 0;
2504         freq.errstring = 0;
2505         freq.basename = 0;
2506         freq.len = 0;
2507         freq.record = 0;
2508         freq.last_in_set = 0;
2509         freq.setname = setname;
2510         freq.surrogate_flag = 0;
2511         freq.number = recno;
2512         freq.comp = comp;
2513         freq.request_format = oid;
2514         freq.output_format = 0;
2515         freq.stream = a->encode;
2516         freq.print = a->print;
2517         freq.referenceId = referenceId;
2518         freq.schema = 0;
2519
2520         retrieve_fetch(a, &freq);
2521
2522         *next = freq.last_in_set ? 0 : recno + 1;
2523
2524         if (freq.errcode)
2525         {
2526             if (!freq.surrogate_flag) /* non-surrogate diagnostic i.e. global */
2527             {
2528                 char s[20];
2529                 *pres = Z_PresentStatus_failure;
2530                 /* for 'present request out of range',
2531                    set addinfo to record position if not set */
2532                 if (freq.errcode == YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE  &&
2533                                 freq.errstring == 0)
2534                 {
2535                     sprintf (s, "%d", recno);
2536                     freq.errstring = s;
2537                 }
2538                 if (errcode)
2539                     *errcode = freq.errcode;
2540                 return diagrec(a, freq.errcode, freq.errstring);
2541             }
2542             reclist->records[reclist->num_records] =
2543                 surrogatediagrec(a, freq.basename, freq.errcode,
2544                                  freq.errstring);
2545             reclist->num_records++;
2546             continue;
2547         }
2548         if (freq.record == 0)  /* no error and no record ? */
2549         {
2550             *next = 0;   /* signal end-of-set and stop */
2551             break;
2552         }
2553         if (freq.len >= 0)
2554             this_length = freq.len;
2555         else
2556             this_length = odr_total(a->encode) - total_length - dumped_records;
2557         yaz_log(YLOG_DEBUG, "  fetched record, len=%d, total=%d dumped=%d",
2558             this_length, total_length, dumped_records);
2559         if (a->preferredMessageSize > 0 &&
2560                 this_length + total_length > a->preferredMessageSize)
2561         {
2562             /* record is small enough, really */
2563             if (this_length <= a->preferredMessageSize && recno > start)
2564             {
2565                 yaz_log(log_requestdetail, "  Dropped last normal-sized record");
2566                 *pres = Z_PresentStatus_partial_2;
2567                 break;
2568             }
2569             /* record can only be fetched by itself */
2570             if (this_length < a->maximumRecordSize)
2571             {
2572                 yaz_log(log_requestdetail, "  Record > prefmsgsz");
2573                 if (toget > 1)
2574                 {
2575                     yaz_log(YLOG_DEBUG, "  Dropped it");
2576                     reclist->records[reclist->num_records] =
2577                          surrogatediagrec(a, freq.basename, 16, 0);
2578                     reclist->num_records++;
2579                     dumped_records += this_length;
2580                     continue;
2581                 }
2582             }
2583             else /* too big entirely */
2584             {
2585                 yaz_log(log_requestdetail, "Record > maxrcdsz "
2586                         "this=%d max=" ODR_INT_PRINTF,
2587                         this_length, a->maximumRecordSize);
2588                 reclist->records[reclist->num_records] =
2589                     surrogatediagrec(a, freq.basename, 17, 0);
2590                 reclist->num_records++;
2591                 dumped_records += this_length;
2592                 continue;
2593             }
2594         }
2595
2596         if (!(thisrec = (Z_NamePlusRecord *)
2597               odr_malloc(a->encode, sizeof(*thisrec))))
2598             return 0;
2599         thisrec->databaseName = odr_strdup_null(a->encode, freq.basename);
2600         thisrec->which = Z_NamePlusRecord_databaseRecord;
2601
2602         if (!freq.output_format)
2603             freq.output_format = freq.request_format;
2604         thisrec->u.databaseRecord = z_ext_record_oid(
2605             a->encode, freq.output_format, freq.record, freq.len);
2606         if (!thisrec->u.databaseRecord)
2607             return 0;
2608         reclist->records[reclist->num_records] = thisrec;
2609         reclist->num_records++;
2610     }
2611     *num = reclist->num_records;
2612     return records;
2613 }
2614
2615 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
2616     int *fd)
2617 {
2618     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2619     bend_search_rr *bsrr =
2620         (bend_search_rr *)nmem_malloc(reqb->request_mem, sizeof(*bsrr));
2621
2622     yaz_log(log_requestdetail, "Got SearchRequest.");
2623     bsrr->fd = fd;
2624     bsrr->association = assoc;
2625     bsrr->referenceId = req->referenceId;
2626     bsrr->srw_sortKeys = 0;
2627     bsrr->srw_setname = 0;
2628     bsrr->srw_setnameIdleTime = 0;
2629     bsrr->estimated_hit_count = 0;
2630     bsrr->partial_resultset = 0;
2631     bsrr->extra_args = 0;
2632     bsrr->extra_response_data = 0;
2633
2634     yaz_log (log_requestdetail, "ResultSet '%s'", req->resultSetName);
2635     if (req->databaseNames)
2636     {
2637         int i;
2638         for (i = 0; i < req->num_databaseNames; i++)
2639             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
2640     }
2641
2642     yaz_log_zquery_level(log_requestdetail,req->query);
2643
2644     if (assoc->init->bend_search)
2645     {
2646         bsrr->setname = req->resultSetName;
2647         bsrr->replace_set = *req->replaceIndicator;
2648         bsrr->num_bases = req->num_databaseNames;
2649         bsrr->basenames = req->databaseNames;
2650         bsrr->query = req->query;
2651         bsrr->stream = assoc->encode;
2652         nmem_transfer(odr_getmem(bsrr->stream), reqb->request_mem);
2653         bsrr->decode = assoc->decode;
2654         bsrr->print = assoc->print;
2655         bsrr->hits = 0;
2656         bsrr->errcode = 0;
2657         bsrr->errstring = NULL;
2658         bsrr->search_info = NULL;
2659
2660         if (assoc->server && assoc->server->cql_transform
2661             && req->query->which == Z_Query_type_104
2662             && req->query->u.type_104->which == Z_External_CQL)
2663         {
2664             /* have a CQL query and a CQL to PQF transform .. */
2665             int srw_errcode =
2666                 cql2pqf(bsrr->stream, req->query->u.type_104->u.cql,
2667                         assoc->server->cql_transform, bsrr->query);
2668             if (srw_errcode)
2669                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2670         }
2671
2672         if (assoc->server && assoc->server->ccl_transform
2673             && req->query->which == Z_Query_type_2) /*CCL*/
2674         {
2675             /* have a CCL query and a CCL to PQF transform .. */
2676             int srw_errcode =
2677                 ccl2pqf(bsrr->stream, req->query->u.type_2,
2678                         assoc->server->ccl_transform, bsrr);
2679             if (srw_errcode)
2680                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2681         }
2682
2683         if (!bsrr->errcode)
2684             (assoc->init->bend_search)(assoc->backend, bsrr);
2685     }
2686     else
2687     {
2688         /* FIXME - make a diagnostic for it */
2689         yaz_log(YLOG_WARN,"Search not supported ?!?!");
2690     }
2691     return response_searchRequest(assoc, reqb, bsrr, fd);
2692 }
2693
2694 int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
2695
2696 /*
2697  * Prepare a searchresponse based on the backend results. We probably want
2698  * to look at making the fetching of records nonblocking as well, but
2699  * so far, we'll keep things simple.
2700  * If bsrt is null, that means we're called in response to a communications
2701  * event, and we'll have to get the response for ourselves.
2702  */
2703 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
2704     bend_search_rr *bsrt, int *fd)
2705 {
2706     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2707     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2708     Z_SearchResponse *resp = (Z_SearchResponse *)
2709         odr_malloc(assoc->encode, sizeof(*resp));
2710     Odr_int *nulint = odr_intdup(assoc->encode, 0);
2711     Odr_int *next = odr_intdup(assoc->encode, 0);
2712     Odr_int *none = odr_intdup(assoc->encode, Z_SearchResponse_none);
2713     int returnedrecs = 0;
2714
2715     apdu->which = Z_APDU_searchResponse;
2716     apdu->u.searchResponse = resp;
2717     resp->referenceId = req->referenceId;
2718     resp->additionalSearchInfo = 0;
2719     resp->otherInfo = 0;
2720     *fd = -1;
2721     if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
2722     {
2723         yaz_log(YLOG_FATAL, "Bad result from backend");
2724         return 0;
2725     }
2726     else if (bsrt->errcode)
2727     {
2728         resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
2729         resp->resultCount = nulint;
2730         resp->numberOfRecordsReturned = nulint;
2731         resp->nextResultSetPosition = nulint;
2732         resp->searchStatus = odr_booldup(assoc->encode, 0);
2733         resp->resultSetStatus = none;
2734         resp->presentStatus = 0;
2735     }
2736     else
2737     {
2738         bool_t *sr = odr_booldup(assoc->encode, 1);
2739         Odr_int *toget = odr_intdup(assoc->encode, 0);
2740         Z_RecordComposition comp, *compp = 0;
2741
2742         yaz_log(log_requestdetail, "resultCount: " ODR_INT_PRINTF, bsrt->hits);
2743
2744         resp->records = 0;
2745         resp->resultCount = &bsrt->hits;
2746
2747         comp.which = Z_RecordComp_simple;
2748         /* how many records does the user agent want, then? */
2749         if (bsrt->hits < 0)
2750             *toget = 0;
2751         else if (bsrt->hits <= *req->smallSetUpperBound)
2752         {
2753             *toget = bsrt->hits;
2754             if ((comp.u.simple = req->smallSetElementSetNames))
2755                 compp = &comp;
2756         }
2757         else if (bsrt->hits < *req->largeSetLowerBound)
2758         {
2759             *toget = *req->mediumSetPresentNumber;
2760             if (*toget > bsrt->hits)
2761                 *toget = bsrt->hits;
2762             if ((comp.u.simple = req->mediumSetElementSetNames))
2763                 compp = &comp;
2764         }
2765         else
2766             *toget = 0;
2767
2768         if (*toget && !resp->records)
2769         {
2770             Odr_int *presst = odr_intdup(assoc->encode, 0);
2771             /* Call bend_present if defined */
2772             if (assoc->init->bend_present)
2773             {
2774                 bend_present_rr *bprr = (bend_present_rr *)
2775                     nmem_malloc(reqb->request_mem, sizeof(*bprr));
2776                 bprr->setname = req->resultSetName;
2777                 bprr->start = 1;
2778                 bprr->number = *toget;
2779                 bprr->format = req->preferredRecordSyntax;
2780                 bprr->comp = compp;
2781                 bprr->referenceId = req->referenceId;
2782                 bprr->stream = assoc->encode;
2783                 bprr->print = assoc->print;
2784                 bprr->association = assoc;
2785                 bprr->errcode = 0;
2786                 bprr->errstring = NULL;
2787                 (*assoc->init->bend_present)(assoc->backend, bprr);
2788
2789                 if (bprr->errcode)
2790                 {
2791                     resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2792                     *resp->presentStatus = Z_PresentStatus_failure;
2793                 }
2794             }
2795
2796             if (!resp->records)
2797                 resp->records = pack_records(
2798                     assoc, req->resultSetName, 1,
2799                     toget, compp, next, presst, req->referenceId,
2800                     req->preferredRecordSyntax, NULL);
2801             if (!resp->records)
2802                 return 0;
2803             resp->numberOfRecordsReturned = toget;
2804             returnedrecs = *toget;
2805             resp->presentStatus = presst;
2806         }
2807         else
2808         {
2809             if (*resp->resultCount)
2810                 *next = 1;
2811             resp->numberOfRecordsReturned = nulint;
2812             resp->presentStatus = 0;
2813         }
2814         resp->nextResultSetPosition = next;
2815         resp->searchStatus = sr;
2816         resp->resultSetStatus = 0;
2817         if (bsrt->estimated_hit_count)
2818         {
2819             resp->resultSetStatus = odr_intdup(assoc->encode,
2820                                                Z_SearchResponse_estimate);
2821         }
2822         else if (bsrt->partial_resultset)
2823         {
2824             resp->resultSetStatus = odr_intdup(assoc->encode,
2825                                                Z_SearchResponse_subset);
2826         }
2827     }
2828     resp->additionalSearchInfo = bsrt->search_info;
2829
2830     if (log_request)
2831     {
2832         int i;
2833         WRBUF wr = wrbuf_alloc();
2834
2835         for (i = 0 ; i < req->num_databaseNames; i++){
2836             if (i)
2837                 wrbuf_printf(wr, "+");
2838             wrbuf_puts(wr, req->databaseNames[i]);
2839         }
2840         wrbuf_printf(wr, " ");
2841
2842         if (bsrt->errcode)
2843             wrbuf_printf(wr, "ERROR %d", bsrt->errcode);
2844         else
2845             wrbuf_printf(wr, "OK " ODR_INT_PRINTF, bsrt->hits);
2846         wrbuf_printf(wr, " %s 1+%d ",
2847                      req->resultSetName, returnedrecs);
2848         yaz_query_to_wrbuf(wr, req->query);
2849
2850         yaz_log(log_request, "Search %s", wrbuf_cstr(wr));
2851         wrbuf_destroy(wr);
2852     }
2853     return apdu;
2854 }
2855
2856 /*
2857  * Maybe we got a little over-friendly when we designed bend_fetch to
2858  * get only one record at a time. Some backends can optimise multiple-record
2859  * fetches, and at any rate, there is some overhead involved in
2860  * all that selecting and hopping around. Problem is, of course, that the
2861  * frontend can't know ahead of time how many records it'll need to
2862  * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
2863  * is downright lousy as a bulk data transfer protocol.
2864  *
2865  * To start with, we'll do the fetching of records from the backend
2866  * in one operation: To save some trips in and out of the event-handler,
2867  * and to simplify the interface to pack_records. At any rate, asynch
2868  * operation is more fun in operations that have an unpredictable execution
2869  * speed - which is normally more true for search than for present.
2870  */
2871 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
2872                                       int *fd)
2873 {
2874     Z_PresentRequest *req = reqb->apdu_request->u.presentRequest;
2875     Z_APDU *apdu;
2876     Z_PresentResponse *resp;
2877     Odr_int *next;
2878     Odr_int *num;
2879     int errcode = 0;
2880     const char *errstring = 0;
2881
2882     yaz_log(log_requestdetail, "Got PresentRequest.");
2883
2884     resp = (Z_PresentResponse *)odr_malloc(assoc->encode, sizeof(*resp));
2885     resp->records = 0;
2886     resp->presentStatus = odr_intdup(assoc->encode, 0);
2887     if (assoc->init->bend_present)
2888     {
2889         bend_present_rr *bprr = (bend_present_rr *)
2890             nmem_malloc(reqb->request_mem, sizeof(*bprr));
2891         bprr->setname = req->resultSetId;
2892         bprr->start = *req->resultSetStartPoint;
2893         bprr->number = *req->numberOfRecordsRequested;
2894         bprr->format = req->preferredRecordSyntax;
2895         bprr->comp = req->recordComposition;
2896         bprr->referenceId = req->referenceId;
2897         bprr->stream = assoc->encode;
2898         bprr->print = assoc->print;
2899         bprr->association = assoc;
2900         bprr->errcode = 0;
2901         bprr->errstring = NULL;
2902         (*assoc->init->bend_present)(assoc->backend, bprr);
2903
2904         if (bprr->errcode)
2905         {
2906             resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2907             *resp->presentStatus = Z_PresentStatus_failure;
2908             errcode = bprr->errcode;
2909             errstring = bprr->errstring;
2910         }
2911     }
2912     apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2913     next = odr_intdup(assoc->encode, 0);
2914     num = odr_intdup(assoc->encode, 0);
2915
2916     apdu->which = Z_APDU_presentResponse;
2917     apdu->u.presentResponse = resp;
2918     resp->referenceId = req->referenceId;
2919     resp->otherInfo = 0;
2920
2921     if (!resp->records)
2922     {
2923         *num = *req->numberOfRecordsRequested;
2924         resp->records =
2925             pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
2926                          num, req->recordComposition, next,
2927                          resp->presentStatus,
2928                          req->referenceId, req->preferredRecordSyntax,
2929                          &errcode);
2930     }
2931     if (log_request)
2932     {
2933         WRBUF wr = wrbuf_alloc();
2934         wrbuf_printf(wr, "Present ");
2935
2936         if (*resp->presentStatus == Z_PresentStatus_failure)
2937             wrbuf_printf(wr, "ERROR %d ", errcode);
2938         else if (*resp->presentStatus == Z_PresentStatus_success)
2939             wrbuf_printf(wr, "OK -  ");
2940         else
2941             wrbuf_printf(wr, "Partial " ODR_INT_PRINTF " - ",
2942                          *resp->presentStatus);
2943
2944         wrbuf_printf(wr, " %s " ODR_INT_PRINTF "+" ODR_INT_PRINTF " ",
2945                 req->resultSetId, *req->resultSetStartPoint,
2946                 *req->numberOfRecordsRequested);
2947         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
2948         wrbuf_destroy(wr);
2949     }
2950     if (!resp->records)
2951         return 0;
2952     resp->numberOfRecordsReturned = num;
2953     resp->nextResultSetPosition = next;
2954
2955     return apdu;
2956 }
2957
2958 /*
2959  * Scan was implemented rather in a hurry, and with support for only the basic
2960  * elements of the service in the backend API. Suggestions are welcome.
2961  */
2962 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
2963 {
2964     Z_ScanRequest *req = reqb->apdu_request->u.scanRequest;
2965     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
2966     Z_ScanResponse *res = (Z_ScanResponse *)
2967         odr_malloc(assoc->encode, sizeof(*res));
2968     Odr_int *scanStatus = odr_intdup(assoc->encode, Z_Scan_failure);
2969     Odr_int *numberOfEntriesReturned = odr_intdup(assoc->encode, 0);
2970     Z_ListEntries *ents = (Z_ListEntries *)
2971         odr_malloc(assoc->encode, sizeof(*ents));
2972     Z_DiagRecs *diagrecs_p = NULL;
2973     bend_scan_rr *bsrr = (bend_scan_rr *)
2974         odr_malloc(assoc->encode, sizeof(*bsrr));
2975     struct scan_entry *save_entries;
2976
2977     yaz_log(log_requestdetail, "Got ScanRequest");
2978
2979     apdu->which = Z_APDU_scanResponse;
2980     apdu->u.scanResponse = res;
2981     res->referenceId = req->referenceId;
2982
2983     /* if step is absent, set it to 0 */
2984     res->stepSize = odr_intdup(assoc->encode, 0);
2985     if (req->stepSize)
2986         *res->stepSize = *req->stepSize;
2987
2988     res->scanStatus = scanStatus;
2989     res->numberOfEntriesReturned = numberOfEntriesReturned;
2990     res->positionOfTerm = 0;
2991     res->entries = ents;
2992     ents->num_entries = 0;
2993     ents->entries = NULL;
2994     ents->num_nonsurrogateDiagnostics = 0;
2995     ents->nonsurrogateDiagnostics = NULL;
2996     res->attributeSet = 0;
2997     res->otherInfo = 0;
2998
2999     if (req->databaseNames)
3000     {
3001         int i;
3002         for (i = 0; i < req->num_databaseNames; i++)
3003             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
3004     }
3005     bsrr->scanClause = 0;
3006     bsrr->errcode = 0;
3007     bsrr->errstring = 0;
3008     bsrr->num_bases = req->num_databaseNames;
3009     bsrr->basenames = req->databaseNames;
3010     bsrr->num_entries = *req->numberOfTermsRequested;
3011     bsrr->term = req->termListAndStartPoint;
3012     bsrr->referenceId = req->referenceId;
3013     bsrr->stream = assoc->encode;
3014     bsrr->print = assoc->print;
3015     bsrr->step_size = res->stepSize;
3016     bsrr->setname = yaz_oi_get_string_oid(&req->otherInfo,
3017                                           yaz_oid_userinfo_scan_set, 1, 0);
3018     bsrr->entries = 0;
3019     /* For YAZ 2.0 and earlier it was the backend handler that
3020        initialized entries (member display_term did not exist)
3021        YAZ 2.0 and later sets 'entries'  and initialize all members
3022        including 'display_term'. If YAZ 2.0 or later sees that
3023        entries was modified - we assume that it is an old handler and
3024        that 'display_term' is _not_ set.
3025     */
3026     if (bsrr->num_entries > 0)
3027     {
3028         int i;
3029         bsrr->entries = (struct scan_entry *)
3030             odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
3031                        bsrr->num_entries);
3032         for (i = 0; i<bsrr->num_entries; i++)
3033         {
3034             bsrr->entries[i].term = 0;
3035             bsrr->entries[i].occurrences = 0;
3036             bsrr->entries[i].errcode = 0;
3037             bsrr->entries[i].errstring = 0;
3038             bsrr->entries[i].display_term = 0;
3039         }
3040     }
3041     save_entries = bsrr->entries;  /* save it so we can compare later */
3042
3043     bsrr->attributeset = req->attributeSet;
3044     log_scan_term_level(log_requestdetail, req->termListAndStartPoint,
3045                         bsrr->attributeset);
3046     bsrr->term_position = req->preferredPositionInResponse ?
3047         *req->preferredPositionInResponse : 1;
3048
3049     ((int (*)(void *, bend_scan_rr *))
3050      (*assoc->init->bend_scan))(assoc->backend, bsrr);
3051
3052     if (bsrr->errcode)
3053         diagrecs_p = zget_DiagRecs(assoc->encode,
3054                                    bsrr->errcode, bsrr->errstring);
3055     else
3056     {
3057         int i;
3058         Z_Entry **tab = (Z_Entry **)
3059             odr_malloc(assoc->encode, sizeof(*tab) * bsrr->num_entries);
3060
3061         if (bsrr->status == BEND_SCAN_PARTIAL)
3062             *scanStatus = Z_Scan_partial_5;
3063         else
3064             *scanStatus = Z_Scan_success;
3065         ents->entries = tab;
3066         ents->num_entries = bsrr->num_entries;
3067         res->numberOfEntriesReturned = odr_intdup(assoc->encode,
3068                                                    ents->num_entries);
3069         res->positionOfTerm = &bsrr->term_position;
3070         for (i = 0; i < bsrr->num_entries; i++)
3071         {
3072             Z_Entry *e;
3073             Z_TermInfo *t;
3074             Odr_oct *o;
3075
3076             tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
3077             if (bsrr->entries[i].occurrences >= 0)
3078             {
3079                 e->which = Z_Entry_termInfo;
3080                 e->u.termInfo = t = (Z_TermInfo *)
3081                     odr_malloc(assoc->encode, sizeof(*t));
3082                 t->suggestedAttributes = 0;
3083                 t->displayTerm = 0;
3084                 if (save_entries == bsrr->entries &&
3085                     bsrr->entries[i].display_term)
3086                 {
3087                     /* the entries was _not_ set by the handler. So it's
3088                        safe to test for new member display_term. It is
3089                        NULL'ed by us.
3090                     */
3091                     t->displayTerm = odr_strdup(assoc->encode,
3092                                                 bsrr->entries[i].display_term);
3093                 }
3094                 t->alternativeTerm = 0;
3095                 t->byAttributes = 0;
3096                 t->otherTermInfo = 0;
3097                 t->globalOccurrences = &bsrr->entries[i].occurrences;
3098                 t->term = (Z_Term *)
3099                     odr_malloc(assoc->encode, sizeof(*t->term));
3100                 t->term->which = Z_Term_general;
3101                 t->term->u.general = o =
3102                     (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
3103                 o->buf = (unsigned char *)
3104                     odr_malloc(assoc->encode, o->len = o->size =
3105                                strlen(bsrr->entries[i].term));
3106                 memcpy(o->buf, bsrr->entries[i].term, o->len);
3107                 yaz_log(YLOG_DEBUG, "  term #%d: '%s' (" ODR_INT_PRINTF ")", i,
3108                          bsrr->entries[i].term, bsrr->entries[i].occurrences);
3109             }
3110             else
3111             {
3112                 Z_DiagRecs *drecs = zget_DiagRecs(assoc->encode,
3113                                                   bsrr->entries[i].errcode,
3114                                                   bsrr->entries[i].errstring);
3115                 assert(drecs->num_diagRecs == 1);
3116                 e->which = Z_Entry_surrogateDiagnostic;
3117                 assert(drecs->diagRecs[0]);
3118                 e->u.surrogateDiagnostic = drecs->diagRecs[0];
3119             }
3120         }
3121     }
3122     if (diagrecs_p)
3123     {
3124         ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
3125         ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
3126     }
3127     if (log_request)
3128     {
3129         int i;
3130         WRBUF wr = wrbuf_alloc();
3131         wrbuf_printf(wr, "Scan ");
3132         for (i = 0 ; i < req->num_databaseNames; i++)
3133         {
3134             if (i)
3135                 wrbuf_printf(wr, "+");
3136             wrbuf_puts(wr, req->databaseNames[i]);
3137         }
3138
3139         wrbuf_printf(wr, " ");
3140
3141         if (bsrr->errcode)
3142             wr_diag(wr, bsrr->errcode, bsrr->errstring);
3143         else
3144             wrbuf_printf(wr, "OK");
3145
3146         wrbuf_printf(wr, " " ODR_INT_PRINTF " - " ODR_INT_PRINTF "+"
3147                      ODR_INT_PRINTF "+" ODR_INT_PRINTF,
3148                      res->numberOfEntriesReturned ?
3149                      *res->numberOfEntriesReturned : 0,
3150                      (req->preferredPositionInResponse ?
3151                       *req->preferredPositionInResponse : 1),
3152                      *req->numberOfTermsRequested,
3153                      (res->stepSize ? *res->stepSize : 1));
3154
3155         if (bsrr->setname)
3156             wrbuf_printf(wr, "+%s", bsrr->setname);
3157
3158         wrbuf_printf(wr, " ");
3159         yaz_scan_to_wrbuf(wr, req->termListAndStartPoint,
3160                           bsrr->attributeset);
3161         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3162         wrbuf_destroy(wr);
3163     }
3164     return apdu;
3165 }
3166
3167 static Z_APDU *process_sortRequest(association *assoc, request *reqb,
3168     int *fd)
3169 {
3170     int i;
3171     Z_SortRequest *req = reqb->apdu_request->u.sortRequest;
3172     Z_SortResponse *res = (Z_SortResponse *)
3173         odr_malloc(assoc->encode, sizeof(*res));
3174     bend_sort_rr *bsrr = (bend_sort_rr *)
3175         odr_malloc(assoc->encode, sizeof(*bsrr));
3176
3177     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
3178
3179     yaz_log(log_requestdetail, "Got SortRequest.");
3180
3181     bsrr->num_input_setnames = req->num_inputResultSetNames;
3182     for (i=0;i<req->num_inputResultSetNames;i++)
3183         yaz_log(log_requestdetail, "Input resultset: '%s'",
3184                 req->inputResultSetNames[i]);
3185     bsrr->input_setnames = req->inputResultSetNames;
3186     bsrr->referenceId = req->referenceId;
3187     bsrr->output_setname = req->sortedResultSetName;
3188     yaz_log(log_requestdetail, "Output resultset: '%s'",
3189                 req->sortedResultSetName);
3190     bsrr->sort_sequence = req->sortSequence;
3191        /*FIXME - dump those sequences too */
3192     bsrr->stream = assoc->encode;
3193     bsrr->print = assoc->print;
3194
3195     bsrr->sort_status = Z_SortResponse_failure;
3196     bsrr->errcode = 0;
3197     bsrr->errstring = 0;
3198
3199     (*assoc->init->bend_sort)(assoc->backend, bsrr);
3200
3201     res->referenceId = bsrr->referenceId;
3202     res->sortStatus = odr_intdup(assoc->encode, bsrr->sort_status);
3203     res->resultSetStatus = 0;
3204     if (bsrr->errcode)
3205     {
3206         Z_DiagRecs *dr = zget_DiagRecs(assoc->encode,
3207                                        bsrr->errcode, bsrr->errstring);
3208         res->diagnostics = dr->diagRecs;
3209         res->num_diagnostics = dr->num_diagRecs;
3210     }
3211     else
3212     {
3213         res->num_diagnostics = 0;
3214         res->diagnostics = 0;
3215     }
3216     res->resultCount = 0;
3217     res->otherInfo = 0;
3218
3219     apdu->which = Z_APDU_sortResponse;
3220     apdu->u.sortResponse = res;
3221     if (log_request)
3222     {
3223         WRBUF wr = wrbuf_alloc();
3224         wrbuf_printf(wr, "Sort ");
3225         if (bsrr->errcode)
3226             wrbuf_printf(wr, " ERROR %d", bsrr->errcode);
3227         else
3228             wrbuf_printf(wr,  "OK -");
3229         wrbuf_printf(wr, " (");
3230         for (i = 0; i<req->num_inputResultSetNames; i++)
3231         {
3232             if (i)
3233                 wrbuf_printf(wr, "+");
3234             wrbuf_puts(wr, req->inputResultSetNames[i]);
3235         }
3236         wrbuf_printf(wr, ")->%s ",req->sortedResultSetName);
3237
3238         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3239         wrbuf_destroy(wr);
3240     }
3241     return apdu;
3242 }
3243
3244 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
3245     int *fd)
3246 {
3247     int i;
3248     Z_DeleteResultSetRequest *req =
3249         reqb->apdu_request->u.deleteResultSetRequest;
3250     Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
3251         odr_malloc(assoc->encode, sizeof(*res));
3252     bend_delete_rr *bdrr = (bend_delete_rr *)
3253         odr_malloc(assoc->encode, sizeof(*bdrr));
3254     Z_APDU *apdu = (Z_APDU *)odr_malloc(assoc->encode, sizeof(*apdu));
3255
3256     yaz_log(log_requestdetail, "Got DeleteRequest.");
3257
3258     bdrr->num_setnames = req->num_resultSetList;
3259     bdrr->setnames = req->resultSetList;
3260     for (i = 0; i<req->num_resultSetList; i++)
3261         yaz_log(log_requestdetail, "resultset: '%s'",
3262                 req->resultSetList[i]);
3263     bdrr->stream = assoc->encode;
3264     bdrr->print = assoc->print;
3265     bdrr->function = *req->deleteFunction;
3266     bdrr->referenceId = req->referenceId;
3267     bdrr->statuses = 0;
3268     if (bdrr->num_setnames > 0)
3269     {
3270         bdrr->statuses = (Odr_int*)
3271             odr_malloc(assoc->encode, sizeof(*bdrr->statuses) *
3272                        bdrr->num_setnames);
3273         for (i = 0; i < bdrr->num_setnames; i++)
3274             bdrr->statuses[i] = 0;
3275     }
3276     (*assoc->init->bend_delete)(assoc->backend, bdrr);
3277
3278     res->referenceId = req->referenceId;
3279
3280     res->deleteOperationStatus = odr_intdup(assoc->encode,bdrr->delete_status);
3281
3282     res->deleteListStatuses = 0;
3283     if (bdrr->num_setnames > 0)
3284     {
3285         int i;
3286         res->deleteListStatuses = (Z_ListStatuses *)
3287             odr_malloc(assoc->encode, sizeof(*res->deleteListStatuses));
3288         res->deleteListStatuses->num = bdrr->num_setnames;
3289         res->deleteListStatuses->elements =
3290             (Z_ListStatus **)
3291             odr_malloc(assoc->encode,
3292                         sizeof(*res->deleteListStatuses->elements) *
3293                         bdrr->num_setnames);
3294         for (i = 0; i<bdrr->num_setnames; i++)
3295         {
3296             res->deleteListStatuses->elements[i] =
3297                 (Z_ListStatus *)
3298                 odr_malloc(assoc->encode,
3299                             sizeof(**res->deleteListStatuses->elements));
3300             res->deleteListStatuses->elements[i]->status = bdrr->statuses+i;
3301             res->deleteListStatuses->elements[i]->id =
3302                 odr_strdup(assoc->encode, bdrr->setnames[i]);
3303         }
3304     }
3305     res->numberNotDeleted = 0;
3306     res->bulkStatuses = 0;
3307     res->deleteMessage = 0;
3308     res->otherInfo = 0;
3309
3310     apdu->which = Z_APDU_deleteResultSetResponse;
3311     apdu->u.deleteResultSetResponse = res;
3312     if (log_request)
3313     {
3314         WRBUF wr = wrbuf_alloc();
3315         wrbuf_printf(wr, "Delete ");
3316         if (bdrr->delete_status)
3317             wrbuf_printf(wr, "ERROR %d", bdrr->delete_status);
3318         else
3319             wrbuf_printf(wr, "OK -");
3320         for (i = 0; i<req->num_resultSetList; i++)
3321             wrbuf_printf(wr, " %s ", req->resultSetList[i]);
3322         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3323         wrbuf_destroy(wr);
3324     }
3325     return apdu;
3326 }
3327
3328 static void process_close(association *assoc, request *reqb)
3329 {
3330     Z_Close *req = reqb->apdu_request->u.close;
3331     static char *reasons[] =
3332     {
3333         "finished",
3334         "shutdown",
3335         "systemProblem",
3336         "costLimit",
3337         "resources",
3338         "securityViolation",
3339         "protocolError",
3340         "lackOfActivity",
3341         "peerAbort",
3342         "unspecified"
3343     };
3344
3345     yaz_log(log_requestdetail, "Got Close, reason %s, message %s",
3346         reasons[*req->closeReason], req->diagnosticInformation ?
3347         req->diagnosticInformation : "NULL");
3348     if (assoc->version < 3) /* to make do_force respond with close */
3349         assoc->version = 3;
3350     do_close_req(assoc, Z_Close_finished,
3351                  "Association terminated by client", reqb);
3352     yaz_log(log_request,"Close OK");
3353 }
3354
3355 static Z_APDU *process_segmentRequest(association *assoc, request *reqb)
3356 {
3357     bend_segment_rr req;
3358
3359     req.segment = reqb->apdu_request->u.segmentRequest;
3360     req.stream = assoc->encode;
3361     req.decode = assoc->decode;
3362     req.print = assoc->print;
3363     req.association = assoc;
3364
3365     (*assoc->init->bend_segment)(assoc->backend, &req);
3366
3367     return 0;
3368 }
3369
3370 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
3371 {
3372     bend_esrequest_rr esrequest;
3373     const char *ext_name = "unknown";
3374
3375     Z_ExtendedServicesRequest *req =
3376         reqb->apdu_request->u.extendedServicesRequest;
3377     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
3378
3379     Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
3380
3381     esrequest.esr = reqb->apdu_request->u.extendedServicesRequest;
3382     esrequest.stream = assoc->encode;
3383     esrequest.decode = assoc->decode;
3384     esrequest.print = assoc->print;
3385     esrequest.errcode = 0;
3386     esrequest.errstring = NULL;
3387     esrequest.association = assoc;
3388     esrequest.taskPackage = 0;
3389     esrequest.referenceId = req->referenceId;
3390
3391
3392     if (esrequest.esr && esrequest.esr->taskSpecificParameters)
3393     {
3394         switch(esrequest.esr->taskSpecificParameters->which)
3395         {
3396         case Z_External_itemOrder:
3397             ext_name = "ItemOrder"; break;
3398         case Z_External_update:
3399             ext_name = "Update"; break;
3400         case Z_External_update0:
3401             ext_name = "Update0"; break;
3402         case Z_External_ESAdmin:
3403             ext_name = "Admin"; break;
3404
3405         }
3406     }
3407
3408     (*assoc->init->bend_esrequest)(assoc->backend, &esrequest);
3409
3410     resp->referenceId = req->referenceId;
3411
3412     if (esrequest.errcode == -1)
3413     {
3414         /* Backend service indicates request will be processed */
3415         yaz_log(log_request, "Extended Service: %s (accepted)", ext_name);
3416         *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
3417     }
3418     else if (esrequest.errcode == 0)
3419     {
3420         /* Backend service indicates request will be processed */
3421         yaz_log(log_request, "Extended Service: %s (done)", ext_name);
3422         *resp->operationStatus = Z_ExtendedServicesResponse_done;
3423     }
3424     else
3425     {
3426         Z_DiagRecs *diagRecs =
3427             zget_DiagRecs(assoc->encode, esrequest.errcode,
3428                           esrequest.errstring);
3429         /* Backend indicates error, request will not be processed */
3430         yaz_log(log_request, "Extended Service: %s (failed)", ext_name);
3431         *resp->operationStatus = Z_ExtendedServicesResponse_failure;
3432         resp->num_diagnostics = diagRecs->num_diagRecs;
3433         resp->diagnostics = diagRecs->diagRecs;
3434         if (log_request)
3435         {
3436             WRBUF wr = wrbuf_alloc();
3437             wrbuf_diags(wr, resp->num_diagnostics, resp->diagnostics);
3438             yaz_log(log_request, "EsRequest %s", wrbuf_cstr(wr) );
3439             wrbuf_destroy(wr);
3440         }
3441
3442     }
3443     /* Do something with the members of bend_extendedservice */
3444     if (esrequest.taskPackage)
3445     {
3446         resp->taskPackage = z_ext_record_oid(
3447             assoc->encode, yaz_oid_recsyn_extended,
3448             (const char *)  esrequest.taskPackage, -1);
3449     }
3450     yaz_log(YLOG_DEBUG,"Send the result apdu");
3451     return apdu;
3452 }
3453
3454 int bend_assoc_is_alive(bend_association assoc)
3455 {
3456     if (assoc->state == ASSOC_DEAD)
3457         return 0; /* already marked as dead. Don't check I/O chan anymore */
3458
3459     return iochan_is_alive(assoc->client_chan);
3460 }
3461
3462
3463 /*
3464  * Local variables:
3465  * c-basic-offset: 4
3466  * c-file-style: "Stroustrup"
3467  * indent-tabs-mode: nil
3468  * End:
3469  * vim: shiftwidth=4 tabstop=8 expandtab
3470  */
3471