src/seshigh.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2008 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 void save_referenceId (request *reqb, Z_ReferenceId *refid);
  97 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
  98     int *fd);
  99 static Z_APDU *process_segmentRequest (association *assoc, request *reqb);
 100
 101 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
 102
 103 /* dynamic logging levels */
 104 static int logbits_set = 0;
 105 static int log_session = 0; /* one-line logs for session */
 106 static int log_sessiondetail = 0; /* more detailed stuff */
 107 static int log_request = 0; /* one-line logs for requests */
 108 static int log_requestdetail = 0;  /* more detailed stuff */
 109
 110 /** get_logbits sets global loglevel bits */
 111 static void get_logbits(void)
 112 { /* needs to be called after parsing cmd-line args that can set loglevels!*/
 113     if (!logbits_set)
 114     {
 115         logbits_set = 1;
 116         log_session = yaz_log_module_level("session");
 117         log_sessiondetail = yaz_log_module_level("sessiondetail");
 118         log_request = yaz_log_module_level("request");
 119         log_requestdetail = yaz_log_module_level("requestdetail");
 120     }
 121 }
 122
 123
 124
 125 static void wr_diag(WRBUF w, int error, const char *addinfo)
 126 {
 127     wrbuf_printf(w, "ERROR %d+", error);
 128     wrbuf_puts_replace_char(w, diagbib1_str(error), ' ', '_');
 129     if (addinfo){
 130         wrbuf_puts(w, "+");
 131         wrbuf_puts_replace_char(w, addinfo, ' ', '_');
 132     }
 133
 134     wrbuf_puts(w, " ");
 135 }
 136
 137
 138 /*
 139  * Create and initialize a new association-handle.
 140  *  channel  : iochannel for the current line.
 141  *  link     : communications channel.
 142  * Returns: 0 or a new association handle.
 143  */
 144 association *create_association(IOCHAN channel, COMSTACK link,
 145                                 const char *apdufile)
 146 {
 147     association *anew;
 148
 149     if (!logbits_set)
 150         get_logbits();
 151     if (!(anew = (association *)xmalloc(sizeof(*anew))))
 152         return 0;
 153     anew->init = 0;
 154     anew->version = 0;
 155     anew->last_control = 0;
 156     anew->client_chan = channel;
 157     anew->client_link = link;
 158     anew->cs_get_mask = 0;
 159     anew->cs_put_mask = 0;
 160     anew->cs_accept_mask = 0;
 161     if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
 162         !(anew->encode = odr_createmem(ODR_ENCODE)))
 163         return 0;
 164     if (apdufile && *apdufile)
 165     {
 166         FILE *f;
 167
 168         if (!(anew->print = odr_createmem(ODR_PRINT)))
 169             return 0;
 170         if (*apdufile == '@')
 171         {
 172             odr_setprint(anew->print, yaz_log_file());
 173         }
 174         else if (*apdufile != '-')
 175         {
 176             char filename[256];
 177             sprintf(filename, "%.200s.%ld", apdufile, (long)getpid());
 178             if (!(f = fopen(filename, "w")))
 179             {
 180                 yaz_log(YLOG_WARN|YLOG_ERRNO, "%s", filename);
 181                 return 0;
 182             }
 183             setvbuf(f, 0, _IONBF, 0);
 184             odr_setprint(anew->print, f);
 185         }
 186     }
 187     else
 188         anew->print = 0;
 189     anew->input_buffer = 0;
 190     anew->input_buffer_len = 0;
 191     anew->backend = 0;
 192     anew->state = ASSOC_NEW;
 193     request_initq(&anew->incoming);
 194     request_initq(&anew->outgoing);
 195     anew->proto = cs_getproto(link);
 196     anew->server = 0;
 197     return anew;
 198 }
 199
 200 /*
 201  * Free association and release resources.
 202  */
 203 void destroy_association(association *h)
 204 {
 205     statserv_options_block *cb = statserv_getcontrol();
 206     request *req;
 207
 208     xfree(h->init);
 209     odr_destroy(h->decode);
 210     odr_destroy(h->encode);
 211     if (h->print)
 212         odr_destroy(h->print);
 213     if (h->input_buffer)
 214     xfree(h->input_buffer);
 215     if (h->backend)
 216         (*cb->bend_close)(h->backend);
 217     while ((req = request_deq(&h->incoming)))
 218         request_release(req);
 219     while ((req = request_deq(&h->outgoing)))
 220         request_release(req);
 221     request_delq(&h->incoming);
 222     request_delq(&h->outgoing);
 223     xfree(h);
 224     xmalloc_trav("session closed");
 225     if (cb && cb->one_shot)
 226     {
 227         exit (0);
 228     }
 229 }
 230
 231 static void do_close_req(association *a, int reason, char *message,
 232                          request *req)
 233 {
 234     Z_APDU apdu;
 235     Z_Close *cls = zget_Close(a->encode);
 236
 237     /* Purge request queue */
 238     while (request_deq(&a->incoming));
 239     while (request_deq(&a->outgoing));
 240     if (a->version >= 3)
 241     {
 242         yaz_log(log_requestdetail, "Sending Close PDU, reason=%d, message=%s",
 243             reason, message ? message : "none");
 244         apdu.which = Z_APDU_close;
 245         apdu.u.close = cls;
 246         *cls->closeReason = reason;
 247         cls->diagnosticInformation = message;
 248         process_z_response(a, req, &apdu);
 249         iochan_settimeout(a->client_chan, 20);
 250     }
 251     else
 252     {
 253         request_release(req);
 254         yaz_log(log_requestdetail, "v2 client. No Close PDU");
 255         iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
 256         a->cs_put_mask = 0;
 257     }
 258     a->state = ASSOC_DEAD;
 259 }
 260
 261 static void do_close(association *a, int reason, char *message)
 262 {
 263     request *req = request_get(&a->outgoing);
 264     do_close_req (a, reason, message, req);
 265 }
 266
 267
 268 int ir_read(IOCHAN h, int event)
 269 {
 270     association *assoc = (association *)iochan_getdata(h);
 271     COMSTACK conn = assoc->client_link;
 272     request *req;
 273
 274     if ((assoc->cs_put_mask & EVENT_INPUT) == 0 && (event & assoc->cs_get_mask))
 275     {
 276         yaz_log(YLOG_DEBUG, "ir_session (input)");
 277         /* We aren't speaking to this fellow */
 278         if (assoc->state == ASSOC_DEAD)
 279         {
 280             yaz_log(log_sessiondetail, "Connection closed - end of session");
 281             cs_close(conn);
 282             destroy_association(assoc);
 283             iochan_destroy(h);
 284             return 0;
 285         }
 286         assoc->cs_get_mask = EVENT_INPUT;
 287
 288         do
 289         {
 290             int res = cs_get(conn, &assoc->input_buffer,
 291                              &assoc->input_buffer_len);
 292             if (res < 0 && cs_errno(conn) == CSBUFSIZE)
 293             {
 294                 yaz_log(log_session, "Connection error: %s res=%d",
 295                         cs_errmsg(cs_errno(conn)), res);
 296                 req = request_get(&assoc->incoming); /* get a new request */
 297                 do_close_req(assoc, Z_Close_protocolError,
 298                              "Incoming package too large", req);
 299                 return 0;
 300             }
 301             else if (res <= 0)
 302             {
 303                 yaz_log(log_session, "Connection closed by client");
 304                 assoc->state = ASSOC_DEAD;
 305                 return 0;
 306             }
 307             else if (res == 1) /* incomplete read - wait for more  */
 308             {
 309                 if (conn->io_pending & CS_WANT_WRITE)
 310                     assoc->cs_get_mask |= EVENT_OUTPUT;
 311                 iochan_setflag(h, assoc->cs_get_mask);
 312                 return 0;
 313             }
 314             /* we got a complete PDU. Let's decode it */
 315             yaz_log(YLOG_DEBUG, "Got PDU, %d bytes: lead=%02X %02X %02X", res,
 316                     assoc->input_buffer[0] & 0xff,
 317                     assoc->input_buffer[1] & 0xff,
 318                     assoc->input_buffer[2] & 0xff);
 319             req = request_get(&assoc->incoming); /* get a new request */
 320             odr_reset(assoc->decode);
 321             odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
 322             if (!z_GDU(assoc->decode, &req->gdu_request, 0, 0))
 323             {
 324                 yaz_log(YLOG_WARN, "ODR error on incoming PDU: %s [element %s] "
 325                         "[near byte %ld] ",
 326                         odr_errmsg(odr_geterror(assoc->decode)),
 327                         odr_getelement(assoc->decode),
 328                         (long) odr_offset(assoc->decode));
 329                 if (assoc->decode->error != OHTTP)
 330                 {
 331                     yaz_log(YLOG_WARN, "PDU dump:");
 332                     odr_dumpBER(yaz_log_file(), assoc->input_buffer, res);
 333                     request_release(req);
 334                     do_close(assoc, Z_Close_protocolError, "Malformed package");
 335                 }
 336                 else
 337                 {
 338                     Z_GDU *p = z_get_HTTP_Response(assoc->encode, 400);
 339                     assoc->state = ASSOC_DEAD;
 340                     process_gdu_response(assoc, req, p);
 341                 }
 342                 return 0;
 343             }
 344             req->request_mem = odr_extract_mem(assoc->decode);
 345             if (assoc->print)
 346             {
 347                 if (!z_GDU(assoc->print, &req->gdu_request, 0, 0))
 348                     yaz_log(YLOG_WARN, "ODR print error: %s",
 349                             odr_errmsg(odr_geterror(assoc->print)));
 350                 odr_reset(assoc->print);
 351             }
 352             request_enq(&assoc->incoming, req);
 353         }
 354         while (cs_more(conn));
 355     }
 356     return 1;
 357 }
 358
 359 /*
 360  * This is where PDUs from the client are read and the further
 361  * processing is initiated. Flow of control moves down through the
 362  * various process_* functions below, until the encoded result comes back up
 363  * to the output handler in here.
 364  *
 365  *  h     : the I/O channel that has an outstanding event.
 366  *  event : the current outstanding event.
 367  */
 368 void ir_session(IOCHAN h, int event)
 369 {
 370     int res;
 371     association *assoc = (association *)iochan_getdata(h);
 372     COMSTACK conn = assoc->client_link;
 373     request *req;
 374
 375     assert(h && conn && assoc);
 376     if (event == EVENT_TIMEOUT)
 377     {
 378         if (assoc->state != ASSOC_UP)
 379         {
 380             yaz_log(YLOG_DEBUG, "Final timeout - closing connection.");
 381             /* do we need to lod this at all */
 382             cs_close(conn);
 383             destroy_association(assoc);
 384             iochan_destroy(h);
 385         }
 386         else
 387         {
 388             yaz_log(log_sessiondetail,
 389                     "Session idle too long. Sending close.");
 390             do_close(assoc, Z_Close_lackOfActivity, 0);
 391         }
 392         return;
 393     }
 394     if (event & assoc->cs_accept_mask)
 395     {
 396         if (!cs_accept (conn))
 397         {
 398             yaz_log (YLOG_WARN, "accept failed");
 399             destroy_association(assoc);
 400             iochan_destroy(h);
 401         }
 402         iochan_clearflag (h, EVENT_OUTPUT);
 403         if (conn->io_pending)
 404         {   /* cs_accept didn't complete */
 405             assoc->cs_accept_mask =
 406                 ((conn->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
 407                 ((conn->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
 408
 409             iochan_setflag (h, assoc->cs_accept_mask);
 410         }
 411         else
 412         {   /* cs_accept completed. Prepare for reading (cs_get) */
 413             assoc->cs_accept_mask = 0;
 414             assoc->cs_get_mask = EVENT_INPUT;
 415             iochan_setflag (h, assoc->cs_get_mask);
 416         }
 417         return;
 418     }
 419     if (event & assoc->cs_get_mask) /* input */
 420     {
 421         if (!ir_read(h, event))
 422             return;
 423         req = request_head(&assoc->incoming);
 424         if (req->state == REQUEST_IDLE)
 425         {
 426             request_deq(&assoc->incoming);
 427             process_gdu_request(assoc, req);
 428         }
 429     }
 430     if (event & assoc->cs_put_mask)
 431     {
 432         request *req = request_head(&assoc->outgoing);
 433
 434         assoc->cs_put_mask = 0;
 435         yaz_log(YLOG_DEBUG, "ir_session (output)");
 436         req->state = REQUEST_PENDING;
 437         switch (res = cs_put(conn, req->response, req->len_response))
 438         {
 439         case -1:
 440             yaz_log(log_sessiondetail, "Connection closed by client");
 441             cs_close(conn);
 442             destroy_association(assoc);
 443             iochan_destroy(h);
 444             break;
 445         case 0: /* all sent - release the request structure */
 446             yaz_log(YLOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
 447 #if 0
 448             yaz_log(YLOG_DEBUG, "HTTP out:\n%.*s", req->len_response,
 449                     req->response);
 450 #endif
 451             nmem_destroy(req->request_mem);
 452             request_deq(&assoc->outgoing);
 453             request_release(req);
 454             if (!request_head(&assoc->outgoing))
 455             {   /* restore mask for cs_get operation ... */
 456                 iochan_clearflag(h, EVENT_OUTPUT|EVENT_INPUT);
 457                 iochan_setflag(h, assoc->cs_get_mask);
 458                 if (assoc->state == ASSOC_DEAD)
 459                     iochan_setevent(assoc->client_chan, EVENT_TIMEOUT);
 460             }
 461             else
 462             {
 463                 assoc->cs_put_mask = EVENT_OUTPUT;
 464             }
 465             break;
 466         default:
 467             if (conn->io_pending & CS_WANT_WRITE)
 468                 assoc->cs_put_mask |= EVENT_OUTPUT;
 469             if (conn->io_pending & CS_WANT_READ)
 470                 assoc->cs_put_mask |= EVENT_INPUT;
 471             iochan_setflag(h, assoc->cs_put_mask);
 472         }
 473     }
 474     if (event & EVENT_EXCEPT)
 475     {
 476         yaz_log(YLOG_WARN, "ir_session (exception)");
 477         cs_close(conn);
 478         destroy_association(assoc);
 479         iochan_destroy(h);
 480     }
 481 }
 482
 483 static int process_z_request(association *assoc, request *req, char **msg);
 484
 485
 486 static void assoc_init_reset(association *assoc)
 487 {
 488     xfree (assoc->init);
 489     assoc->init = (bend_initrequest *) xmalloc (sizeof(*assoc->init));
 490
 491     assoc->init->stream = assoc->encode;
 492     assoc->init->print = assoc->print;
 493     assoc->init->auth = 0;
 494     assoc->init->referenceId = 0;
 495     assoc->init->implementation_version = 0;
 496     assoc->init->implementation_id = 0;
 497     assoc->init->implementation_name = 0;
 498     assoc->init->query_charset = 0;
 499     assoc->init->records_in_same_charset = 0;
 500     assoc->init->bend_sort = NULL;
 501     assoc->init->bend_search = NULL;
 502     assoc->init->bend_present = NULL;
 503     assoc->init->bend_esrequest = NULL;
 504     assoc->init->bend_delete = NULL;
 505     assoc->init->bend_scan = NULL;
 506     assoc->init->bend_segment = NULL;
 507     assoc->init->bend_fetch = NULL;
 508     assoc->init->bend_explain = NULL;
 509     assoc->init->bend_srw_scan = NULL;
 510     assoc->init->bend_srw_update = NULL;
 511
 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     return 0;
 667 #else
 668     (*assoc->init->bend_fetch)(assoc->backend, rr);
 669 #endif
 670     return 0;
 671 }
 672
 673 static int srw_bend_fetch(association *assoc, int pos,
 674                           Z_SRW_searchRetrieveRequest *srw_req,
 675                           Z_SRW_record *record,
 676                           const char **addinfo)
 677 {
 678     bend_fetch_rr rr;
 679     ODR o = assoc->encode;
 680
 681     rr.setname = "default";
 682     rr.number = pos;
 683     rr.referenceId = 0;
 684     rr.request_format = odr_oiddup(assoc->decode, yaz_oid_recsyn_xml);
 685
 686     rr.comp = (Z_RecordComposition *)
 687             odr_malloc(assoc->decode, sizeof(*rr.comp));
 688     rr.comp->which = Z_RecordComp_complex;
 689     rr.comp->u.complex = (Z_CompSpec *)
 690             odr_malloc(assoc->decode, sizeof(Z_CompSpec));
 691     rr.comp->u.complex->selectAlternativeSyntax = (bool_t *)
 692         odr_malloc(assoc->encode, sizeof(bool_t));
 693     *rr.comp->u.complex->selectAlternativeSyntax = 0;
 694     rr.comp->u.complex->num_dbSpecific = 0;
 695     rr.comp->u.complex->dbSpecific = 0;
 696     rr.comp->u.complex->num_recordSyntax = 0;
 697     rr.comp->u.complex->recordSyntax = 0;
 698
 699     rr.comp->u.complex->generic = (Z_Specification *)
 700             odr_malloc(assoc->decode, sizeof(Z_Specification));
 701
 702     /* schema uri = recordSchema (or NULL if recordSchema is not given) */
 703     rr.comp->u.complex->generic->which = Z_Schema_uri;
 704     rr.comp->u.complex->generic->schema.uri = srw_req->recordSchema;
 705
 706     /* ESN = recordSchema if recordSchema is present */
 707     rr.comp->u.complex->generic->elementSpec = 0;
 708     if (srw_req->recordSchema)
 709     {
 710         rr.comp->u.complex->generic->elementSpec =
 711             (Z_ElementSpec *) odr_malloc(assoc->encode, sizeof(Z_ElementSpec));
 712         rr.comp->u.complex->generic->elementSpec->which =
 713             Z_ElementSpec_elementSetName;
 714         rr.comp->u.complex->generic->elementSpec->u.elementSetName =
 715             srw_req->recordSchema;
 716     }
 717
 718     rr.stream = assoc->encode;
 719     rr.print = assoc->print;
 720
 721     rr.basename = 0;
 722     rr.len = 0;
 723     rr.record = 0;
 724     rr.last_in_set = 0;
 725     rr.errcode = 0;
 726     rr.errstring = 0;
 727     rr.surrogate_flag = 0;
 728     rr.schema = srw_req->recordSchema;
 729
 730     if (!assoc->init->bend_fetch)
 731         return 1;
 732
 733     retrieve_fetch(assoc, &rr);
 734
 735     if (rr.errcode && rr.surrogate_flag)
 736     {
 737         int code = yaz_diag_bib1_to_srw(rr.errcode);
 738         const char *message = yaz_diag_srw_str(code);
 739         int len = 200;
 740         if (message)
 741             len += strlen(message);
 742         if (rr.errstring)
 743             len += strlen(rr.errstring);
 744
 745         record->recordData_buf = (char *) odr_malloc(o, len);
 746
 747         sprintf(record->recordData_buf, "<diagnostic "
 748                 "xmlns=\"http://www.loc.gov/zing/srw/diagnostic/\">\n"
 749                 " <uri>info:srw/diagnostic/1/%d</uri>\n", code);
 750         if (rr.errstring)
 751             sprintf(record->recordData_buf + strlen(record->recordData_buf),
 752                     " <details>%s</details>\n", rr.errstring);
 753         if (message)
 754             sprintf(record->recordData_buf + strlen(record->recordData_buf),
 755                     " <message>%s</message>\n", message);
 756         sprintf(record->recordData_buf + strlen(record->recordData_buf),
 757                 "</diagnostic>\n");
 758         record->recordData_len = strlen(record->recordData_buf);
 759         record->recordPosition = odr_intdup(o, pos);
 760         record->recordSchema = "info:srw/schema/1/diagnostics-v1.1";
 761         return 0;
 762     }
 763     else if (rr.len >= 0)
 764     {
 765         record->recordData_buf = rr.record;
 766         record->recordData_len = rr.len;
 767         record->recordPosition = odr_intdup(o, pos);
 768         record->recordSchema = odr_strdup_null(o, rr.schema);
 769     }
 770     if (rr.errcode)
 771     {
 772         *addinfo = rr.errstring;
 773         return rr.errcode;
 774     }
 775     return 0;
 776 }
 777
 778 static int cql2pqf(ODR odr, const char *cql, cql_transform_t ct,
 779                    Z_Query *query_result)
 780 {
 781     /* have a CQL query and  CQL to PQF transform .. */
 782     CQL_parser cp = cql_parser_create();
 783     int r;
 784     int srw_errcode = 0;
 785     const char *add = 0;
 786     char rpn_buf[5120];
 787
 788     r = cql_parser_string(cp, cql);
 789     if (r)
 790     {
 791         /* CQL syntax error */
 792         srw_errcode = 10;
 793     }
 794     if (!r)
 795     {
 796         /* Syntax OK */
 797         r = cql_transform_buf(ct,
 798                               cql_parser_result(cp),
 799                               rpn_buf, sizeof(rpn_buf)-1);
 800         if (r)
 801             srw_errcode  = cql_transform_error(ct, &add);
 802     }
 803     if (!r)
 804     {
 805         /* Syntax & transform OK. */
 806         /* Convert PQF string to Z39.50 to RPN query struct */
 807         YAZ_PQF_Parser pp = yaz_pqf_create();
 808         Z_RPNQuery *rpnquery = yaz_pqf_parse(pp, odr, rpn_buf);
 809         if (!rpnquery)
 810         {
 811             size_t off;
 812             const char *pqf_msg;
 813             int code = yaz_pqf_error(pp, &pqf_msg, &off);
 814             yaz_log(YLOG_WARN, "PQF Parser Error %s (code %d)",
 815                     pqf_msg, code);
 816             srw_errcode = 10;
 817         }
 818         else
 819         {
 820             query_result->which = Z_Query_type_1;
 821             query_result->u.type_1 = rpnquery;
 822         }
 823         yaz_pqf_destroy(pp);
 824     }
 825     cql_parser_destroy(cp);
 826     return srw_errcode;
 827 }
 828
 829 static int cql2pqf_scan(ODR odr, const char *cql, cql_transform_t ct,
 830                         Z_AttributesPlusTerm *result)
 831 {
 832     Z_Query query;
 833     Z_RPNQuery *rpn;
 834     int srw_error = cql2pqf(odr, cql, ct, &query);
 835     if (srw_error)
 836         return srw_error;
 837     if (query.which != Z_Query_type_1 && query.which != Z_Query_type_101)
 838         return 10; /* bad query type */
 839     rpn = query.u.type_1;
 840     if (!rpn->RPNStructure)
 841         return 10; /* must be structure */
 842     if (rpn->RPNStructure->which != Z_RPNStructure_simple)
 843         return 10; /* must be simple */
 844     if (rpn->RPNStructure->u.simple->which != Z_Operand_APT)
 845         return 10; /* must be attributes plus term node .. */
 846     memcpy(result, rpn->RPNStructure->u.simple->u.attributesPlusTerm,
 847            sizeof(*result));
 848     return 0;
 849 }
 850
 851
 852 static int ccl2pqf(ODR odr, const Odr_oct *ccl, CCL_bibset bibset,
 853                    bend_search_rr *bsrr) {
 854     char *ccl0;
 855     struct ccl_rpn_node *node;
 856     int errcode, pos;
 857
 858     ccl0 = odr_strdupn(odr, (char*) ccl->buf, ccl->len);
 859     if ((node = ccl_find_str(bibset, ccl0, &errcode, &pos)) == 0) {
 860         bsrr->errstring = (char*) ccl_err_msg(errcode);
 861         return 10;              /* Query syntax error */
 862     }
 863
 864     bsrr->query->which = Z_Query_type_1;
 865     bsrr->query->u.type_1 = ccl_rpn_query(odr, node);
 866     return 0;
 867 }
 868
 869
 870 static void srw_bend_search(association *assoc, request *req,
 871                             Z_SRW_PDU *sr,
 872                             Z_SRW_searchRetrieveResponse *srw_res,
 873                             int *http_code)
 874 {
 875     int srw_error = 0;
 876     Z_External *ext;
 877     Z_SRW_searchRetrieveRequest *srw_req = sr->u.request;
 878
 879     *http_code = 200;
 880     yaz_log(log_requestdetail, "Got SRW SearchRetrieveRequest");
 881     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
 882     if (srw_res->num_diagnostics == 0 && assoc->init)
 883     {
 884         bend_search_rr rr;
 885         rr.setname = "default";
 886         rr.replace_set = 1;
 887         rr.num_bases = 1;
 888         rr.basenames = &srw_req->database;
 889         rr.referenceId = 0;
 890         rr.srw_sortKeys = 0;
 891         rr.srw_setname = 0;
 892         rr.srw_setnameIdleTime = 0;
 893         rr.estimated_hit_count = 0;
 894         rr.partial_resultset = 0;
 895         rr.query = (Z_Query *) odr_malloc (assoc->decode, sizeof(*rr.query));
 896         rr.query->u.type_1 = 0;
 897
 898         if (srw_req->query_type == Z_SRW_query_type_cql)
 899         {
 900             if (assoc->server && assoc->server->cql_transform)
 901             {
 902                 int srw_errcode = cql2pqf(assoc->encode, srw_req->query.cql,
 903                                           assoc->server->cql_transform,
 904                                           rr.query);
 905                 if (srw_errcode)
 906                 {
 907                     yaz_add_srw_diagnostic(assoc->encode,
 908                                            &srw_res->diagnostics,
 909                                            &srw_res->num_diagnostics,
 910                                            srw_errcode, 0);
 911                 }
 912             }
 913             else
 914             {
 915                 /* CQL query to backend. Wrap it - Z39.50 style */
 916                 ext = (Z_External *) odr_malloc(assoc->decode, sizeof(*ext));
 917                 ext->direct_reference = odr_getoidbystr(assoc->decode,
 918                                                         "1.2.840.10003.16.2");
 919                 ext->indirect_reference = 0;
 920                 ext->descriptor = 0;
 921                 ext->which = Z_External_CQL;
 922                 ext->u.cql = srw_req->query.cql;
 923
 924                 rr.query->which = Z_Query_type_104;
 925                 rr.query->u.type_104 =  ext;
 926             }
 927         }
 928         else if (srw_req->query_type == Z_SRW_query_type_pqf)
 929         {
 930             Z_RPNQuery *RPNquery;
 931             YAZ_PQF_Parser pqf_parser;
 932
 933             pqf_parser = yaz_pqf_create ();
 934
 935             RPNquery = yaz_pqf_parse (pqf_parser, assoc->decode,
 936                                       srw_req->query.pqf);
 937             if (!RPNquery)
 938             {
 939                 const char *pqf_msg;
 940                 size_t off;
 941                 int code = yaz_pqf_error (pqf_parser, &pqf_msg, &off);
 942                 yaz_log(log_requestdetail, "Parse error %d %s near offset %ld",
 943                         code, pqf_msg, (long) off);
 944                 srw_error = YAZ_SRW_QUERY_SYNTAX_ERROR;
 945             }
 946
 947             rr.query->which = Z_Query_type_1;
 948             rr.query->u.type_1 =  RPNquery;
 949
 950             yaz_pqf_destroy (pqf_parser);
 951         }
 952         else
 953         {
 954             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
 955                                    &srw_res->num_diagnostics,
 956                                    YAZ_SRW_UNSUPP_QUERY_TYPE, 0);
 957         }
 958         if (rr.query->u.type_1)
 959         {
 960             rr.stream = assoc->encode;
 961             rr.decode = assoc->decode;
 962             rr.print = assoc->print;
 963             rr.request = req;
 964             if ( srw_req->sort.sortKeys )
 965                 rr.srw_sortKeys = odr_strdup(assoc->encode,
 966                                              srw_req->sort.sortKeys );
 967             rr.association = assoc;
 968             rr.fd = 0;
 969             rr.hits = 0;
 970             rr.errcode = 0;
 971             rr.errstring = 0;
 972             rr.search_info = 0;
 973             yaz_log_zquery_level(log_requestdetail,rr.query);
 974
 975             (assoc->init->bend_search)(assoc->backend, &rr);
 976             if (rr.errcode)
 977             {
 978                 if (rr.errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
 979                 {
 980                     *http_code = 404;
 981                 }
 982                 else
 983                 {
 984                     srw_error = yaz_diag_bib1_to_srw (rr.errcode);
 985                     yaz_add_srw_diagnostic(assoc->encode,
 986                                            &srw_res->diagnostics,
 987                                            &srw_res->num_diagnostics,
 988                                            srw_error, rr.errstring);
 989                 }
 990             }
 991             else
 992             {
 993                 int number = srw_req->maximumRecords ? *srw_req->maximumRecords : 0;
 994                 int start = srw_req->startRecord ? *srw_req->startRecord : 1;
 995
 996                 yaz_log(log_requestdetail, "Request to pack %d+%d out of %d",
 997                         start, number, rr.hits);
 998
 999                 srw_res->numberOfRecords = odr_intdup(assoc->encode, rr.hits);
1000                 if (rr.srw_setname)
1001                 {
1002                     srw_res->resultSetId =
1003                         odr_strdup(assoc->encode, rr.srw_setname );
1004                     srw_res->resultSetIdleTime =
1005                         odr_intdup(assoc->encode, *rr.srw_setnameIdleTime );
1006                 }
1007
1008                 if (start > rr.hits || start < 1)
1009                 {
1010                     /* if hits<=0 and start=1 we don't return a diagnostic */
1011                     if (start != 1)
1012                         yaz_add_srw_diagnostic(
1013                             assoc->encode,
1014                             &srw_res->diagnostics, &srw_res->num_diagnostics,
1015                             YAZ_SRW_FIRST_RECORD_POSITION_OUT_OF_RANGE, 0);
1016                 }
1017                 else if (number > 0)
1018                 {
1019                     int i;
1020                     int ok = 1;
1021                     if (start + number > rr.hits)
1022                         number = rr.hits - start + 1;
1023
1024                     /* Call bend_present if defined */
1025                     if (assoc->init->bend_present)
1026                     {
1027                         bend_present_rr *bprr = (bend_present_rr*)
1028                             odr_malloc (assoc->decode, sizeof(*bprr));
1029                         bprr->setname = "default";
1030                         bprr->start = start;
1031                         bprr->number = number;
1032                         if (srw_req->recordSchema)
1033                         {
1034                             bprr->comp = (Z_RecordComposition *) odr_malloc(assoc->decode,
1035                                                                             sizeof(*bprr->comp));
1036                             bprr->comp->which = Z_RecordComp_simple;
1037                             bprr->comp->u.simple = (Z_ElementSetNames *)
1038                                 odr_malloc(assoc->decode, sizeof(Z_ElementSetNames));
1039                             bprr->comp->u.simple->which = Z_ElementSetNames_generic;
1040                             bprr->comp->u.simple->u.generic = srw_req->recordSchema;
1041                         }
1042                         else
1043                         {
1044                             bprr->comp = 0;
1045                         }
1046                         bprr->stream = assoc->encode;
1047                         bprr->referenceId = 0;
1048                         bprr->print = assoc->print;
1049                         bprr->request = req;
1050                         bprr->association = assoc;
1051                         bprr->errcode = 0;
1052                         bprr->errstring = NULL;
1053                         (*assoc->init->bend_present)(assoc->backend, bprr);
1054
1055                         if (!bprr->request)
1056                             return;
1057                         if (bprr->errcode)
1058                         {
1059                             srw_error = yaz_diag_bib1_to_srw (bprr->errcode);
1060                             yaz_add_srw_diagnostic(assoc->encode,
1061                                                    &srw_res->diagnostics,
1062                                                    &srw_res->num_diagnostics,
1063                                                    srw_error, bprr->errstring);
1064                             ok = 0;
1065                         }
1066                     }
1067
1068                     if (ok)
1069                     {
1070                         int j = 0;
1071                         int packing = Z_SRW_recordPacking_string;
1072                         if (srw_req->recordPacking)
1073                         {
1074                             packing =
1075                                 yaz_srw_str_to_pack(srw_req->recordPacking);
1076                             if (packing == -1)
1077                                 packing = Z_SRW_recordPacking_string;
1078                         }
1079                         srw_res->records = (Z_SRW_record *)
1080                             odr_malloc(assoc->encode,
1081                                        number * sizeof(*srw_res->records));
1082
1083                         srw_res->extra_records = (Z_SRW_extra_record **)
1084                             odr_malloc(assoc->encode,
1085                                        number*sizeof(*srw_res->extra_records));
1086
1087                         for (i = 0; i<number; i++)
1088                         {
1089                             int errcode;
1090                             const char *addinfo = 0;
1091
1092                             srw_res->records[j].recordPacking = packing;
1093                             srw_res->records[j].recordData_buf = 0;
1094                             srw_res->extra_records[j] = 0;
1095                             yaz_log(YLOG_DEBUG, "srw_bend_fetch %d", i+start);
1096                             errcode = srw_bend_fetch(assoc, i+start, srw_req,
1097                                                      srw_res->records + j,
1098                                                      &addinfo);
1099                             if (errcode)
1100                             {
1101                                 yaz_add_srw_diagnostic(assoc->encode,
1102                                                        &srw_res->diagnostics,
1103                                                        &srw_res->num_diagnostics,
1104                                                        yaz_diag_bib1_to_srw (errcode),
1105                                                        addinfo);
1106
1107                                 break;
1108                             }
1109                             if (srw_res->records[j].recordData_buf)
1110                                 j++;
1111                         }
1112                         srw_res->num_records = j;
1113                         if (!j)
1114                             srw_res->records = 0;
1115                     }
1116                 }
1117                 if (rr.estimated_hit_count || rr.partial_resultset)
1118                 {
1119                     yaz_add_srw_diagnostic(
1120                         assoc->encode,
1121                         &srw_res->diagnostics,
1122                         &srw_res->num_diagnostics,
1123                         YAZ_SRW_RESULT_SET_CREATED_WITH_VALID_PARTIAL_RESULTS_AVAILABLE,
1124                         0);
1125                 }
1126             }
1127         }
1128     }
1129     if (log_request)
1130     {
1131         const char *querystr = "?";
1132         const char *querytype = "?";
1133         WRBUF wr = wrbuf_alloc();
1134
1135         switch (srw_req->query_type)
1136         {
1137         case Z_SRW_query_type_cql:
1138             querytype = "CQL";
1139             querystr = srw_req->query.cql;
1140             break;
1141         case Z_SRW_query_type_pqf:
1142             querytype = "PQF";
1143             querystr = srw_req->query.pqf;
1144             break;
1145         }
1146         wrbuf_printf(wr, "SRWSearch ");
1147         wrbuf_printf(wr, srw_req->database);
1148         wrbuf_printf(wr, " ");
1149         if (srw_res->num_diagnostics)
1150             wrbuf_printf(wr, "ERROR %s", srw_res->diagnostics[0].uri);
1151         else if (*http_code != 200)
1152             wrbuf_printf(wr, "ERROR info:http/%d", *http_code);
1153         else if (srw_res->numberOfRecords)
1154         {
1155             wrbuf_printf(wr, "OK %d",
1156                          (srw_res->numberOfRecords ?
1157                           *srw_res->numberOfRecords : 0));
1158         }
1159         wrbuf_printf(wr, " %s %d+%d",
1160                      (srw_res->resultSetId ?
1161                       srw_res->resultSetId : "-"),
1162                      (srw_req->startRecord ? *srw_req->startRecord : 1),
1163                      srw_res->num_records);
1164         yaz_log(log_request, "%s %s: %s", wrbuf_cstr(wr), querytype, querystr);
1165         wrbuf_destroy(wr);
1166     }
1167 }
1168
1169 static char *srw_bend_explain_default(void *handle, bend_explain_rr *rr)
1170 {
1171 #if YAZ_HAVE_XML2
1172     xmlNodePtr ptr = (xmlNode *) rr->server_node_ptr;
1173     if (!ptr)
1174         return 0;
1175     for (ptr = ptr->children; ptr; ptr = ptr->next)
1176     {
1177         if (ptr->type != XML_ELEMENT_NODE)
1178             continue;
1179         if (!strcmp((const char *) ptr->name, "explain"))
1180         {
1181             int len;
1182             xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
1183             xmlChar *buf_out;
1184             char *content;
1185
1186             ptr = xmlCopyNode(ptr, 1);
1187
1188             xmlDocSetRootElement(doc, ptr);
1189
1190             xmlDocDumpMemory(doc, &buf_out, &len);
1191             content = (char*) odr_malloc(rr->stream, 1+len);
1192             memcpy(content, buf_out, len);
1193             content[len] = '\0';
1194
1195             xmlFree(buf_out);
1196             xmlFreeDoc(doc);
1197             rr->explain_buf = content;
1198             return 0;
1199         }
1200     }
1201 #endif
1202     return 0;
1203 }
1204
1205 static void srw_bend_explain(association *assoc, request *req,
1206                              Z_SRW_PDU *sr,
1207                              Z_SRW_explainResponse *srw_res,
1208                              int *http_code)
1209 {
1210     Z_SRW_explainRequest *srw_req = sr->u.explain_request;
1211     yaz_log(log_requestdetail, "Got SRW ExplainRequest");
1212     *http_code = 404;
1213     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1214     if (assoc->init)
1215     {
1216         bend_explain_rr rr;
1217
1218         rr.stream = assoc->encode;
1219         rr.decode = assoc->decode;
1220         rr.print = assoc->print;
1221         rr.explain_buf = 0;
1222         rr.database = srw_req->database;
1223         if (assoc->server)
1224             rr.server_node_ptr = assoc->server->server_node_ptr;
1225         else
1226             rr.server_node_ptr = 0;
1227         rr.schema = "http://explain.z3950.org/dtd/2.0/";
1228         if (assoc->init->bend_explain)
1229             (*assoc->init->bend_explain)(assoc->backend, &rr);
1230         else
1231             srw_bend_explain_default(assoc->backend, &rr);
1232
1233         if (rr.explain_buf)
1234         {
1235             int packing = Z_SRW_recordPacking_string;
1236             if (srw_req->recordPacking)
1237             {
1238                 packing =
1239                     yaz_srw_str_to_pack(srw_req->recordPacking);
1240                 if (packing == -1)
1241                     packing = Z_SRW_recordPacking_string;
1242             }
1243             srw_res->record.recordSchema = rr.schema;
1244             srw_res->record.recordPacking = packing;
1245             srw_res->record.recordData_buf = rr.explain_buf;
1246             srw_res->record.recordData_len = strlen(rr.explain_buf);
1247             srw_res->record.recordPosition = 0;
1248             *http_code = 200;
1249         }
1250     }
1251 }
1252
1253 static void srw_bend_scan(association *assoc, request *req,
1254                           Z_SRW_PDU *sr,
1255                           Z_SRW_scanResponse *srw_res,
1256                           int *http_code)
1257 {
1258     Z_SRW_scanRequest *srw_req = sr->u.scan_request;
1259     yaz_log(log_requestdetail, "Got SRW ScanRequest");
1260
1261     *http_code = 200;
1262     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1263     if (srw_res->num_diagnostics == 0 && assoc->init)
1264     {
1265         struct scan_entry *save_entries;
1266
1267         bend_scan_rr *bsrr = (bend_scan_rr *)
1268             odr_malloc (assoc->encode, sizeof(*bsrr));
1269         bsrr->num_bases = 1;
1270         bsrr->basenames = &srw_req->database;
1271
1272         bsrr->num_entries = srw_req->maximumTerms ?
1273             *srw_req->maximumTerms : 10;
1274         bsrr->term_position = srw_req->responsePosition ?
1275             *srw_req->responsePosition : 1;
1276
1277         bsrr->errcode = 0;
1278         bsrr->errstring = 0;
1279         bsrr->referenceId = 0;
1280         bsrr->stream = assoc->encode;
1281         bsrr->print = assoc->print;
1282         bsrr->step_size = odr_intdup(assoc->decode, 0);
1283         bsrr->entries = 0;
1284         bsrr->setname = 0;
1285
1286         if (bsrr->num_entries > 0)
1287         {
1288             int i;
1289             bsrr->entries = (struct scan_entry *)
1290                 odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
1291                            bsrr->num_entries);
1292             for (i = 0; i<bsrr->num_entries; i++)
1293             {
1294                 bsrr->entries[i].term = 0;
1295                 bsrr->entries[i].occurrences = 0;
1296                 bsrr->entries[i].errcode = 0;
1297                 bsrr->entries[i].errstring = 0;
1298                 bsrr->entries[i].display_term = 0;
1299             }
1300         }
1301         save_entries = bsrr->entries;  /* save it so we can compare later */
1302
1303         if (srw_req->query_type == Z_SRW_query_type_pqf &&
1304             assoc->init->bend_scan)
1305         {
1306             YAZ_PQF_Parser pqf_parser = yaz_pqf_create();
1307
1308             bsrr->term = yaz_pqf_scan(pqf_parser, assoc->decode,
1309                                       &bsrr->attributeset,
1310                                       srw_req->scanClause.pqf);
1311             yaz_pqf_destroy(pqf_parser);
1312             bsrr->scanClause = 0;
1313             ((int (*)(void *, bend_scan_rr *))
1314              (*assoc->init->bend_scan))(assoc->backend, bsrr);
1315         }
1316         else if (srw_req->query_type == Z_SRW_query_type_cql
1317                  && assoc->init->bend_scan && assoc->server
1318                  && assoc->server->cql_transform)
1319         {
1320             int srw_error;
1321             bsrr->scanClause = 0;
1322             bsrr->attributeset = 0;
1323             bsrr->term = (Z_AttributesPlusTerm *)
1324                 odr_malloc(assoc->decode, sizeof(*bsrr->term));
1325             srw_error = cql2pqf_scan(assoc->encode,
1326                                      srw_req->scanClause.cql,
1327                                      assoc->server->cql_transform,
1328                                      bsrr->term);
1329             if (srw_error)
1330                 yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1331                                        &srw_res->num_diagnostics,
1332                                        srw_error, 0);
1333             else
1334             {
1335                 ((int (*)(void *, bend_scan_rr *))
1336                  (*assoc->init->bend_scan))(assoc->backend, bsrr);
1337             }
1338         }
1339         else if (srw_req->query_type == Z_SRW_query_type_cql
1340                  && assoc->init->bend_srw_scan)
1341         {
1342             bsrr->term = 0;
1343             bsrr->attributeset = 0;
1344             bsrr->scanClause = srw_req->scanClause.cql;
1345             ((int (*)(void *, bend_scan_rr *))
1346              (*assoc->init->bend_srw_scan))(assoc->backend, bsrr);
1347         }
1348         else
1349         {
1350             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1351                                    &srw_res->num_diagnostics,
1352                                    YAZ_SRW_UNSUPP_OPERATION, "scan");
1353         }
1354         if (bsrr->errcode)
1355         {
1356             int srw_error;
1357             if (bsrr->errcode == YAZ_BIB1_DATABASE_UNAVAILABLE)
1358             {
1359                 *http_code = 404;
1360                 return;
1361             }
1362             srw_error = yaz_diag_bib1_to_srw (bsrr->errcode);
1363
1364             yaz_add_srw_diagnostic(assoc->encode, &srw_res->diagnostics,
1365                                    &srw_res->num_diagnostics,
1366                                    srw_error, bsrr->errstring);
1367         }
1368         else if (srw_res->num_diagnostics == 0 && bsrr->num_entries)
1369         {
1370             int i;
1371             srw_res->terms = (Z_SRW_scanTerm*)
1372                 odr_malloc(assoc->encode, sizeof(*srw_res->terms) *
1373                            bsrr->num_entries);
1374
1375             srw_res->num_terms =  bsrr->num_entries;
1376             for (i = 0; i<bsrr->num_entries; i++)
1377             {
1378                 Z_SRW_scanTerm *t = srw_res->terms + i;
1379                 t->value = odr_strdup(assoc->encode, bsrr->entries[i].term);
1380                 t->numberOfRecords =
1381                     odr_intdup(assoc->encode, bsrr->entries[i].occurrences);
1382                 t->displayTerm = 0;
1383                 if (save_entries == bsrr->entries &&
1384                     bsrr->entries[i].display_term)
1385                 {
1386                     /* the entries was _not_ set by the handler. So it's
1387                        safe to test for new member display_term. It is
1388                        NULL'ed by us.
1389                     */
1390                     t->displayTerm = odr_strdup(assoc->encode,
1391                                                 bsrr->entries[i].display_term);
1392                 }
1393                 t->whereInList = 0;
1394             }
1395         }
1396     }
1397     if (log_request)
1398     {
1399         WRBUF wr = wrbuf_alloc();
1400         const char *querytype = 0;
1401         const char *querystr = 0;
1402
1403         switch(srw_req->query_type)
1404         {
1405         case Z_SRW_query_type_pqf:
1406             querytype = "PQF";
1407             querystr = srw_req->scanClause.pqf;
1408             break;
1409         case Z_SRW_query_type_cql:
1410             querytype = "CQL";
1411             querystr = srw_req->scanClause.cql;
1412             break;
1413         default:
1414             querytype = "UNKNOWN";
1415             querystr = "";
1416         }
1417
1418         wrbuf_printf(wr, "SRWScan ");
1419         wrbuf_printf(wr, srw_req->database);
1420         wrbuf_printf(wr, " ");
1421
1422         if (srw_res->num_diagnostics)
1423             wrbuf_printf(wr, "ERROR %s - ", srw_res->diagnostics[0].uri);
1424         else if (srw_res->num_terms)
1425             wrbuf_printf(wr, "OK %d - ", srw_res->num_terms);
1426         else
1427             wrbuf_printf(wr, "OK - - ");
1428
1429         wrbuf_printf(wr, "%d+%d+0 ",
1430                      (srw_req->responsePosition ?
1431                       *srw_req->responsePosition : 1),
1432                      (srw_req->maximumTerms ?
1433                       *srw_req->maximumTerms : 1));
1434         /* there is no step size in SRU/W ??? */
1435         wrbuf_printf(wr, "%s: %s ", querytype, querystr);
1436         yaz_log(log_request, "%s ", wrbuf_cstr(wr) );
1437         wrbuf_destroy(wr);
1438     }
1439
1440 }
1441
1442 static void srw_bend_update(association *assoc, request *req,
1443                             Z_SRW_PDU *sr,
1444                             Z_SRW_updateResponse *srw_res,
1445                             int *http_code)
1446 {
1447     Z_SRW_updateRequest *srw_req = sr->u.update_request;
1448     yaz_log(log_session, "SRWUpdate action=%s", srw_req->operation);
1449     yaz_log(YLOG_DEBUG, "num_diag = %d", srw_res->num_diagnostics );
1450     *http_code = 404;
1451     srw_bend_init(assoc, &srw_res->diagnostics, &srw_res->num_diagnostics, sr);
1452     if (assoc->init)
1453     {
1454         bend_update_rr rr;
1455         Z_SRW_extra_record *extra = srw_req->extra_record;
1456
1457         rr.stream = assoc->encode;
1458         rr.print = assoc->print;
1459         rr.num_bases = 1;
1460         rr.basenames = &srw_req->database;
1461         rr.operation = srw_req->operation;
1462         rr.operation_status = "failed";
1463         rr.record_id = 0;
1464         rr.record_versions = 0;
1465         rr.num_versions = 0;
1466         rr.record_packing = "string";
1467         rr.record_schema = 0;
1468         rr.record_data = 0;
1469         rr.extra_record_data = 0;
1470         rr.extra_request_data = 0;
1471         rr.extra_response_data = 0;
1472         rr.uri = 0;
1473         rr.message = 0;
1474         rr.details = 0;
1475
1476         *http_code = 200;
1477         if (rr.operation == 0)
1478         {
1479             yaz_add_sru_update_diagnostic(
1480                 assoc->encode, &srw_res->diagnostics,
1481                 &srw_res->num_diagnostics,
1482                 YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1483                 "action" );
1484             return;
1485         }
1486         yaz_log(YLOG_DEBUG, "basename = %s", rr.basenames[0] );
1487         yaz_log(YLOG_DEBUG, "Operation = %s", rr.operation );
1488         if (!strcmp( rr.operation, "delete"))
1489         {
1490             if (srw_req->record && !srw_req->record->recordSchema)
1491             {
1492                 rr.record_schema = odr_strdup(
1493                     assoc->encode,
1494                     srw_req->record->recordSchema);
1495             }
1496             if (srw_req->record)
1497             {
1498                 rr.record_data = odr_strdupn(
1499                     assoc->encode,
1500                     srw_req->record->recordData_buf,
1501                     srw_req->record->recordData_len );
1502             }
1503             if (extra && extra->extraRecordData_len)
1504             {
1505                 rr.extra_record_data = odr_strdupn(
1506                     assoc->encode,
1507                     extra->extraRecordData_buf,
1508                     extra->extraRecordData_len );
1509             }
1510             if (srw_req->recordId)
1511                 rr.record_id = srw_req->recordId;
1512             else if (extra && extra->recordIdentifier)
1513                 rr.record_id = extra->recordIdentifier;
1514         }
1515         else if (!strcmp(rr.operation, "replace"))
1516         {
1517             if (srw_req->recordId)
1518                 rr.record_id = srw_req->recordId;
1519             else if (extra && extra->recordIdentifier)
1520                 rr.record_id = extra->recordIdentifier;
1521             else
1522             {
1523                 yaz_add_sru_update_diagnostic(
1524                     assoc->encode, &srw_res->diagnostics,
1525                     &srw_res->num_diagnostics,
1526                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1527                     "recordIdentifier");
1528             }
1529             if (!srw_req->record)
1530             {
1531                 yaz_add_sru_update_diagnostic(
1532                     assoc->encode, &srw_res->diagnostics,
1533                     &srw_res->num_diagnostics,
1534                     YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1535                     "record");
1536             }
1537             else
1538             {
1539                 if (srw_req->record->recordSchema)
1540                     rr.record_schema = odr_strdup(
1541                         assoc->encode, srw_req->record->recordSchema);
1542                 if (srw_req->record->recordData_len )
1543                 {
1544                     rr.record_data = odr_strdupn(assoc->encode,
1545                                                  srw_req->record->recordData_buf,
1546                                                  srw_req->record->recordData_len );
1547                 }
1548                 else
1549                 {
1550                     yaz_add_sru_update_diagnostic(
1551                         assoc->encode, &srw_res->diagnostics,
1552                         &srw_res->num_diagnostics,
1553                         YAZ_SRU_UPDATE_MISSING_MANDATORY_ELEMENT_RECORD_REJECTED,
1554                         "recordData" );
1555                 }
1556             }
1557             if (extra && extra->extraRecordData_len)
1558             {
1559                 rr.extra_record_data = odr_strdupn(
1560                     assoc->encode,
1561                     extra->extraRecordData_buf,
1562                     extra->extraRecordData_len );
1563             }
1564         }
1565         else if (!strcmp(rr.operation, "insert"))
1566         {
1567             if (srw_req->recordId)
1568                 rr.record_id = srw_req->recordId;
1569             else if (extra)
1570                 rr.record_id = extra->recordIdentifier;
1571
1572             if (srw_req->record)
1573             {
1574                 if (srw_req->record->recordSchema)
1575                     rr.record_schema = odr_strdup(
1576                         assoc->encode, srw_req->record->recordSchema);
1577
1578                 if (srw_req->record->recordData_len)
1579                     rr.record_data = odr_strdupn(
1580                         assoc->encode,
1581                         srw_req->record->recordData_buf,
1582                         srw_req->record->recordData_len );
1583             }
1584             if (extra && extra->extraRecordData_len)
1585             {
1586                 rr.extra_record_data = odr_strdupn(
1587                     assoc->encode,
1588                     extra->extraRecordData_buf,
1589                     extra->extraRecordData_len );
1590             }
1591         }
1592         else
1593             yaz_add_sru_update_diagnostic(assoc->encode, &srw_res->diagnostics,
1594                                           &srw_res->num_diagnostics,
1595                                           YAZ_SRU_UPDATE_INVALID_ACTION,
1596                                           rr.operation );
1597
1598         if (srw_req->record)
1599         {
1600             const char *pack_str =
1601                 yaz_srw_pack_to_str(srw_req->record->recordPacking);
1602             if (pack_str)
1603                 rr.record_packing = odr_strdup(assoc->encode, pack_str);
1604         }
1605
1606         if (srw_req->num_recordVersions)
1607         {
1608             rr.record_versions = srw_req->recordVersions;
1609             rr.num_versions = srw_req->num_recordVersions;
1610         }
1611         if (srw_req->extraRequestData_len)
1612         {
1613             rr.extra_request_data = odr_strdupn(assoc->encode,
1614                                                 srw_req->extraRequestData_buf,
1615                                                 srw_req->extraRequestData_len );
1616         }
1617         if (srw_res->num_diagnostics == 0)
1618         {
1619             if ( assoc->init->bend_srw_update)
1620                 (*assoc->init->bend_srw_update)(assoc->backend, &rr);
1621             else
1622                 yaz_add_sru_update_diagnostic(
1623                     assoc->encode, &srw_res->diagnostics,
1624                     &srw_res->num_diagnostics,
1625                     YAZ_SRU_UPDATE_UNSPECIFIED_DATABASE_ERROR,
1626                     "No Update backend handler");
1627         }
1628
1629         if (rr.uri)
1630             yaz_add_srw_diagnostic_uri(assoc->encode,
1631                                        &srw_res->diagnostics,
1632                                        &srw_res->num_diagnostics,
1633                                        rr.uri,
1634                                        rr.message,
1635                                        rr.details);
1636         srw_res->recordId = rr.record_id;
1637         srw_res->operationStatus = rr.operation_status;
1638         srw_res->recordVersions = rr.record_versions;
1639         srw_res->num_recordVersions = rr.num_versions;
1640         if (srw_res->extraResponseData_len)
1641         {
1642             srw_res->extraResponseData_buf = rr.extra_response_data;
1643             srw_res->extraResponseData_len = strlen(rr.extra_response_data);
1644         }
1645         if (srw_res->num_diagnostics == 0 && rr.record_data)
1646         {
1647             srw_res->record = yaz_srw_get_record(assoc->encode);
1648             srw_res->record->recordSchema = rr.record_schema;
1649             if (rr.record_packing)
1650             {
1651                 int pack = yaz_srw_str_to_pack(rr.record_packing);
1652
1653                 if (pack == -1)
1654                 {
1655                     pack = Z_SRW_recordPacking_string;
1656                     yaz_log(YLOG_WARN, "Back packing %s from backend",
1657                             rr.record_packing);
1658                 }
1659                 srw_res->record->recordPacking = pack;
1660             }
1661             srw_res->record->recordData_buf = rr.record_data;
1662             srw_res->record->recordData_len = strlen(rr.record_data);
1663             if (rr.extra_record_data)
1664             {
1665                 Z_SRW_extra_record *ex =
1666                     yaz_srw_get_extra_record(assoc->encode);
1667                 srw_res->extra_record = ex;
1668                 ex->extraRecordData_buf = rr.extra_record_data;
1669                 ex->extraRecordData_len = strlen(rr.extra_record_data);
1670             }
1671         }
1672     }
1673 }
1674
1675 /* check if path is OK (1); BAD (0) */
1676 static int check_path(const char *path)
1677 {
1678     if (*path != '/')
1679         return 0;
1680     if (strstr(path, ".."))
1681         return 0;
1682     return 1;
1683 }
1684
1685 static char *read_file(const char *fname, ODR o, int *sz)
1686 {
1687     char *buf;
1688     FILE *inf = fopen(fname, "rb");
1689     if (!inf)
1690         return 0;
1691
1692     fseek(inf, 0L, SEEK_END);
1693     *sz = ftell(inf);
1694     rewind(inf);
1695     buf = (char *) odr_malloc(o, *sz);
1696     fread(buf, 1, *sz, inf);
1697     fclose(inf);
1698     return buf;
1699 }
1700
1701 static void process_http_request(association *assoc, request *req)
1702 {
1703     Z_HTTP_Request *hreq = req->gdu_request->u.HTTP_Request;
1704     ODR o = assoc->encode;
1705     int r = 2;  /* 2=NOT TAKEN, 1=TAKEN, 0=SOAP TAKEN */
1706     Z_SRW_PDU *sr = 0;
1707     Z_SOAP *soap_package = 0;
1708     Z_GDU *p = 0;
1709     char *charset = 0;
1710     Z_HTTP_Response *hres = 0;
1711     int keepalive = 1;
1712     const char *stylesheet = 0; /* for now .. set later */
1713     Z_SRW_diagnostic *diagnostic = 0;
1714     int num_diagnostic = 0;
1715     const char *host = z_HTTP_header_lookup(hreq->headers, "Host");
1716
1717     if (!control_association(assoc, host, 0))
1718     {
1719         p = z_get_HTTP_Response(o, 404);
1720         r = 1;
1721     }
1722     if (r == 2 && assoc->server && assoc->server->docpath
1723         && hreq->path[0] == '/'
1724         &&
1725         /* check if path is a proper prefix of documentroot */
1726         strncmp(hreq->path+1, assoc->server->docpath,
1727                 strlen(assoc->server->docpath))
1728         == 0)
1729     {
1730         if (!check_path(hreq->path))
1731         {
1732             yaz_log(YLOG_LOG, "File %s access forbidden", hreq->path+1);
1733             p = z_get_HTTP_Response(o, 404);
1734         }
1735         else
1736         {
1737             int content_size = 0;
1738             char *content_buf = read_file(hreq->path+1, o, &content_size);
1739             if (!content_buf)
1740             {
1741                 yaz_log(YLOG_LOG, "File %s not found", hreq->path+1);
1742                 p = z_get_HTTP_Response(o, 404);
1743             }
1744             else
1745             {
1746                 const char *ctype = 0;
1747                 yaz_mime_types types = yaz_mime_types_create();
1748
1749                 yaz_mime_types_add(types, "xsl", "application/xml");
1750                 yaz_mime_types_add(types, "xml", "application/xml");
1751                 yaz_mime_types_add(types, "css", "text/css");
1752                 yaz_mime_types_add(types, "html", "text/html");
1753                 yaz_mime_types_add(types, "htm", "text/html");
1754                 yaz_mime_types_add(types, "txt", "text/plain");
1755                 yaz_mime_types_add(types, "js", "application/x-javascript");
1756
1757                 yaz_mime_types_add(types, "gif", "image/gif");
1758                 yaz_mime_types_add(types, "png", "image/png");
1759                 yaz_mime_types_add(types, "jpg", "image/jpeg");
1760                 yaz_mime_types_add(types, "jpeg", "image/jpeg");
1761
1762                 ctype = yaz_mime_lookup_fname(types, hreq->path);
1763                 if (!ctype)
1764                 {
1765                     yaz_log(YLOG_LOG, "No mime type for %s", hreq->path+1);
1766                     p = z_get_HTTP_Response(o, 404);
1767                 }
1768                 else
1769                 {
1770                     p = z_get_HTTP_Response(o, 200);
1771                     hres = p->u.HTTP_Response;
1772                     hres->content_buf = content_buf;
1773                     hres->content_len = content_size;
1774                     z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1775                 }
1776                 yaz_mime_types_destroy(types);
1777             }
1778         }
1779         r = 1;
1780     }
1781
1782     if (r == 2)
1783     {
1784         r = yaz_srw_decode(hreq, &sr, &soap_package, assoc->decode, &charset);
1785         yaz_log(YLOG_DEBUG, "yaz_srw_decode returned %d", r);
1786     }
1787     if (r == 2)  /* not taken */
1788     {
1789         r = yaz_sru_decode(hreq, &sr, &soap_package, assoc->decode, &charset,
1790                            &diagnostic, &num_diagnostic);
1791         yaz_log(YLOG_DEBUG, "yaz_sru_decode returned %d", r);
1792     }
1793     if (r == 0)  /* decode SRW/SRU OK .. */
1794     {
1795         int http_code = 200;
1796         if (sr->which == Z_SRW_searchRetrieve_request)
1797         {
1798             Z_SRW_PDU *res =
1799                 yaz_srw_get_pdu(assoc->encode, Z_SRW_searchRetrieve_response,
1800                                 sr->srw_version);
1801             stylesheet = sr->u.request->stylesheet;
1802             if (num_diagnostic)
1803             {
1804                 res->u.response->diagnostics = diagnostic;
1805                 res->u.response->num_diagnostics = num_diagnostic;
1806             }
1807             else
1808             {
1809                 srw_bend_search(assoc, req, sr, res->u.response,
1810                                 &http_code);
1811             }
1812             if (http_code == 200)
1813                 soap_package->u.generic->p = res;
1814         }
1815         else if (sr->which == Z_SRW_explain_request)
1816         {
1817             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_explain_response,
1818                                              sr->srw_version);
1819             stylesheet = sr->u.explain_request->stylesheet;
1820             if (num_diagnostic)
1821             {
1822                 res->u.explain_response->diagnostics = diagnostic;
1823                 res->u.explain_response->num_diagnostics = num_diagnostic;
1824             }
1825             srw_bend_explain(assoc, req, sr,
1826                              res->u.explain_response, &http_code);
1827             if (http_code == 200)
1828                 soap_package->u.generic->p = res;
1829         }
1830         else if (sr->which == Z_SRW_scan_request)
1831         {
1832             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_scan_response,
1833                                              sr->srw_version);
1834             stylesheet = sr->u.scan_request->stylesheet;
1835             if (num_diagnostic)
1836             {
1837                 res->u.scan_response->diagnostics = diagnostic;
1838                 res->u.scan_response->num_diagnostics = num_diagnostic;
1839             }
1840             srw_bend_scan(assoc, req, sr,
1841                           res->u.scan_response, &http_code);
1842             if (http_code == 200)
1843                 soap_package->u.generic->p = res;
1844         }
1845         else if (sr->which == Z_SRW_update_request)
1846         {
1847             Z_SRW_PDU *res = yaz_srw_get_pdu(o, Z_SRW_update_response,
1848                                              sr->srw_version);
1849             yaz_log(YLOG_DEBUG, "handling SRW UpdateRequest");
1850             if (num_diagnostic)
1851             {
1852                 res->u.update_response->diagnostics = diagnostic;
1853                 res->u.update_response->num_diagnostics = num_diagnostic;
1854             }
1855             yaz_log(YLOG_DEBUG, "num_diag = %d", res->u.update_response->num_diagnostics );
1856             srw_bend_update(assoc, req, sr,
1857                             res->u.update_response, &http_code);
1858             if (http_code == 200)
1859                 soap_package->u.generic->p = res;
1860         }
1861         else
1862         {
1863             yaz_log(log_request, "SOAP ERROR");
1864             /* FIXME - what error, what query */
1865             http_code = 500;
1866             z_soap_error(assoc->encode, soap_package,
1867                          "SOAP-ENV:Client", "Bad method", 0);
1868         }
1869         if (http_code == 200 || http_code == 500)
1870         {
1871             static Z_SOAP_Handler soap_handlers[4] = {
1872 #if YAZ_HAVE_XML2
1873                 {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
1874                 {YAZ_XMLNS_SRU_v1_0, 0, (Z_SOAP_fun) yaz_srw_codec},
1875                 {YAZ_XMLNS_UPDATE_v0_9, 0, (Z_SOAP_fun) yaz_ucp_codec},
1876 #endif
1877                 {0, 0, 0}
1878             };
1879             char ctype[80];
1880             int ret;
1881             p = z_get_HTTP_Response(o, 200);
1882             hres = p->u.HTTP_Response;
1883
1884             if (!stylesheet && assoc->server)
1885                 stylesheet = assoc->server->stylesheet;
1886
1887             /* empty stylesheet means NO stylesheet */
1888             if (stylesheet && *stylesheet == '\0')
1889                 stylesheet = 0;
1890
1891             ret = z_soap_codec_enc_xsl(assoc->encode, &soap_package,
1892                                        &hres->content_buf, &hres->content_len,
1893                                        soap_handlers, charset, stylesheet);
1894             hres->code = http_code;
1895
1896             strcpy(ctype, "text/xml");
1897             if (charset && strlen(charset) < sizeof(ctype)-30)
1898             {
1899                 strcat(ctype, "; charset=");
1900                 strcat(ctype, charset);
1901             }
1902             z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
1903         }
1904         else
1905             p = z_get_HTTP_Response(o, http_code);
1906     }
1907
1908     if (p == 0)
1909         p = z_get_HTTP_Response(o, 500);
1910     hres = p->u.HTTP_Response;
1911     if (!strcmp(hreq->version, "1.0"))
1912     {
1913         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1914         if (v && !strcmp(v, "Keep-Alive"))
1915             keepalive = 1;
1916         else
1917             keepalive = 0;
1918         hres->version = "1.0";
1919     }
1920     else
1921     {
1922         const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
1923         if (v && !strcmp(v, "close"))
1924             keepalive = 0;
1925         else
1926             keepalive = 1;
1927         hres->version = "1.1";
1928     }
1929     if (!keepalive)
1930     {
1931         z_HTTP_header_add(o, &hres->headers, "Connection", "close");
1932         assoc->state = ASSOC_DEAD;
1933         assoc->cs_get_mask = 0;
1934     }
1935     else
1936     {
1937         int t;
1938         const char *alive = z_HTTP_header_lookup(hreq->headers, "Keep-Alive");
1939
1940         if (alive && isdigit(*(const unsigned char *) alive))
1941             t = atoi(alive);
1942         else
1943             t = 15;
1944         if (t < 0 || t > 3600)
1945             t = 3600;
1946         iochan_settimeout(assoc->client_chan,t);
1947         z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
1948     }
1949     process_gdu_response(assoc, req, p);
1950 }
1951
1952 static void process_gdu_request(association *assoc, request *req)
1953 {
1954     if (req->gdu_request->which == Z_GDU_Z3950)
1955     {
1956         char *msg = 0;
1957         req->apdu_request = req->gdu_request->u.z3950;
1958         if (process_z_request(assoc, req, &msg) < 0)
1959             do_close_req(assoc, Z_Close_systemProblem, msg, req);
1960     }
1961     else if (req->gdu_request->which == Z_GDU_HTTP_Request)
1962         process_http_request(assoc, req);
1963     else
1964     {
1965         do_close_req(assoc, Z_Close_systemProblem, "bad protocol packet", req);
1966     }
1967 }
1968
1969 /*
1970  * Initiate request processing.
1971  */
1972 static int process_z_request(association *assoc, request *req, char **msg)
1973 {
1974     int fd = -1;
1975     Z_APDU *res;
1976     int retval;
1977
1978     *msg = "Unknown Error";
1979     assert(req && req->state == REQUEST_IDLE);
1980     if (req->apdu_request->which != Z_APDU_initRequest && !assoc->init)
1981     {
1982         *msg = "Missing InitRequest";
1983         return -1;
1984     }
1985     switch (req->apdu_request->which)
1986     {
1987     case Z_APDU_initRequest:
1988         res = process_initRequest(assoc, req); break;
1989     case Z_APDU_searchRequest:
1990         res = process_searchRequest(assoc, req, &fd); break;
1991     case Z_APDU_presentRequest:
1992         res = process_presentRequest(assoc, req, &fd); break;
1993     case Z_APDU_scanRequest:
1994         if (assoc->init->bend_scan)
1995             res = process_scanRequest(assoc, req, &fd);
1996         else
1997         {
1998             *msg = "Cannot handle Scan APDU";
1999             return -1;
2000         }
2001         break;
2002     case Z_APDU_extendedServicesRequest:
2003         if (assoc->init->bend_esrequest)
2004             res = process_ESRequest(assoc, req, &fd);
2005         else
2006         {
2007             *msg = "Cannot handle Extended Services APDU";
2008             return -1;
2009         }
2010         break;
2011     case Z_APDU_sortRequest:
2012         if (assoc->init->bend_sort)
2013             res = process_sortRequest(assoc, req, &fd);
2014         else
2015         {
2016             *msg = "Cannot handle Sort APDU";
2017             return -1;
2018         }
2019         break;
2020     case Z_APDU_close:
2021         process_close(assoc, req);
2022         return 0;
2023     case Z_APDU_deleteResultSetRequest:
2024         if (assoc->init->bend_delete)
2025             res = process_deleteRequest(assoc, req, &fd);
2026         else
2027         {
2028             *msg = "Cannot handle Delete APDU";
2029             return -1;
2030         }
2031         break;
2032     case Z_APDU_segmentRequest:
2033         if (assoc->init->bend_segment)
2034         {
2035             res = process_segmentRequest (assoc, req);
2036         }
2037         else
2038         {
2039             *msg = "Cannot handle Segment APDU";
2040             return -1;
2041         }
2042         break;
2043     case Z_APDU_triggerResourceControlRequest:
2044         return 0;
2045     default:
2046         *msg = "Bad APDU received";
2047         return -1;
2048     }
2049     if (res)
2050     {
2051         yaz_log(YLOG_DEBUG, "  result immediately available");
2052         retval = process_z_response(assoc, req, res);
2053     }
2054     else if (fd < 0)
2055     {
2056         yaz_log(YLOG_DEBUG, "  result unavailble");
2057         retval = 0;
2058     }
2059     else /* no result yet - one will be provided later */
2060     {
2061         IOCHAN chan;
2062
2063         /* Set up an I/O handler for the fd supplied by the backend */
2064
2065         yaz_log(YLOG_DEBUG, "   establishing handler for result");
2066         req->state = REQUEST_PENDING;
2067         if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT, 0)))
2068             abort();
2069         iochan_setdata(chan, assoc);
2070         retval = 0;
2071     }
2072     return retval;
2073 }
2074
2075 /*
2076  * Handle message from the backend.
2077  */
2078 void backend_response(IOCHAN i, int event)
2079 {
2080     association *assoc = (association *)iochan_getdata(i);
2081     request *req = request_head(&assoc->incoming);
2082     Z_APDU *res;
2083     int fd;
2084
2085     yaz_log(YLOG_DEBUG, "backend_response");
2086     assert(assoc && req && req->state != REQUEST_IDLE);
2087     /* determine what it is we're waiting for */
2088     switch (req->apdu_request->which)
2089     {
2090         case Z_APDU_searchRequest:
2091             res = response_searchRequest(assoc, req, 0, &fd); break;
2092 #if 0
2093         case Z_APDU_presentRequest:
2094             res = response_presentRequest(assoc, req, 0, &fd); break;
2095         case Z_APDU_scanRequest:
2096             res = response_scanRequest(assoc, req, 0, &fd); break;
2097 #endif
2098         default:
2099             yaz_log(YLOG_FATAL, "Serious programmer's lapse or bug");
2100             abort();
2101     }
2102     if ((res && process_z_response(assoc, req, res) < 0) || fd < 0)
2103     {
2104         yaz_log(YLOG_WARN, "Fatal error when talking to backend");
2105         do_close(assoc, Z_Close_systemProblem, 0);
2106         iochan_destroy(i);
2107         return;
2108     }
2109     else if (!res) /* no result yet - try again later */
2110     {
2111         yaz_log(YLOG_DEBUG, "   no result yet");
2112         iochan_setfd(i, fd); /* in case fd has changed */
2113     }
2114 }
2115
2116 /*
2117  * Encode response, and transfer the request structure to the outgoing queue.
2118  */
2119 static int process_gdu_response(association *assoc, request *req, Z_GDU *res)
2120 {
2121     odr_setbuf(assoc->encode, req->response, req->size_response, 1);
2122
2123     if (assoc->print)
2124     {
2125         if (!z_GDU(assoc->print, &res, 0, 0))
2126             yaz_log(YLOG_WARN, "ODR print error: %s",
2127                 odr_errmsg(odr_geterror(assoc->print)));
2128         odr_reset(assoc->print);
2129     }
2130     if (!z_GDU(assoc->encode, &res, 0, 0))
2131     {
2132         yaz_log(YLOG_WARN, "ODR error when encoding PDU: %s [element %s]",
2133                 odr_errmsg(odr_geterror(assoc->decode)),
2134                 odr_getelement(assoc->decode));
2135         return -1;
2136     }
2137     req->response = odr_getbuf(assoc->encode, &req->len_response,
2138         &req->size_response);
2139     odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
2140     odr_reset(assoc->encode);
2141     req->state = REQUEST_IDLE;
2142     request_enq(&assoc->outgoing, req);
2143     /* turn the work over to the ir_session handler */
2144     iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
2145     assoc->cs_put_mask = EVENT_OUTPUT;
2146     /* Is there more work to be done? give that to the input handler too */
2147     for (;;)
2148     {
2149         req = request_head(&assoc->incoming);
2150         if (req && req->state == REQUEST_IDLE)
2151         {
2152             request_deq(&assoc->incoming);
2153             process_gdu_request(assoc, req);
2154         }
2155         else
2156             break;
2157     }
2158     return 0;
2159 }
2160
2161 /*
2162  * Encode response, and transfer the request structure to the outgoing queue.
2163  */
2164 static int process_z_response(association *assoc, request *req, Z_APDU *res)
2165 {
2166     Z_GDU *gres = (Z_GDU *) odr_malloc(assoc->encode, sizeof(*res));
2167     gres->which = Z_GDU_Z3950;
2168     gres->u.z3950 = res;
2169
2170     return process_gdu_response(assoc, req, gres);
2171 }
2172
2173 static char *get_vhost(Z_OtherInformation *otherInfo)
2174 {
2175     return yaz_oi_get_string_oid(&otherInfo, yaz_oid_userinfo_proxy, 1, 0);
2176 }
2177
2178 /*
2179  * Handle init request.
2180  * At the moment, we don't check the options
2181  * anywhere else in the code - we just try not to do anything that would
2182  * break a naive client. We'll toss 'em into the association block when
2183  * we need them there.
2184  */
2185 static Z_APDU *process_initRequest(association *assoc, request *reqb)
2186 {
2187     Z_InitRequest *req = reqb->apdu_request->u.initRequest;
2188     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
2189     Z_InitResponse *resp = apdu->u.initResponse;
2190     bend_initresult *binitres;
2191     char *version;
2192     char options[140];
2193     statserv_options_block *cb = 0;  /* by default no control for backend */
2194
2195     if (control_association(assoc, get_vhost(req->otherInfo), 1))
2196         cb = statserv_getcontrol();  /* got control block for backend */
2197
2198     if (cb && assoc->backend)
2199         (*cb->bend_close)(assoc->backend);
2200
2201     yaz_log(log_requestdetail, "Got initRequest");
2202     if (req->implementationId)
2203         yaz_log(log_requestdetail, "Id:        %s",
2204                 req->implementationId);
2205     if (req->implementationName)
2206         yaz_log(log_requestdetail, "Name:      %s",
2207                 req->implementationName);
2208     if (req->implementationVersion)
2209         yaz_log(log_requestdetail, "Version:   %s",
2210                 req->implementationVersion);
2211
2212     assoc_init_reset(assoc);
2213
2214     assoc->init->auth = req->idAuthentication;
2215     assoc->init->referenceId = req->referenceId;
2216
2217     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2218     {
2219         Z_CharSetandLanguageNegotiation *negotiation =
2220             yaz_get_charneg_record (req->otherInfo);
2221         if (negotiation &&
2222             negotiation->which == Z_CharSetandLanguageNegotiation_proposal)
2223             assoc->init->charneg_request = negotiation;
2224     }
2225
2226     assoc->backend = 0;
2227     if (cb)
2228     {
2229         if (req->implementationVersion)
2230             yaz_log(log_requestdetail, "Config:    %s",
2231                     cb->configname);
2232
2233         iochan_settimeout(assoc->client_chan, cb->idle_timeout * 60);
2234
2235         /* we have a backend control block, so call that init function */
2236         if (!(binitres = (*cb->bend_init)(assoc->init)))
2237         {
2238             yaz_log(YLOG_WARN, "Bad response from backend.");
2239             return 0;
2240         }
2241         assoc->backend = binitres->handle;
2242     }
2243     else
2244     {
2245         /* no backend. return error */
2246         binitres = (bend_initresult *)
2247             odr_malloc(assoc->encode, sizeof(*binitres));
2248         binitres->errstring = 0;
2249         binitres->errcode = YAZ_BIB1_PERMANENT_SYSTEM_ERROR;
2250         iochan_settimeout(assoc->client_chan, 10);
2251     }
2252     if ((assoc->init->bend_sort))
2253         yaz_log (YLOG_DEBUG, "Sort handler installed");
2254     if ((assoc->init->bend_search))
2255         yaz_log (YLOG_DEBUG, "Search handler installed");
2256     if ((assoc->init->bend_present))
2257         yaz_log (YLOG_DEBUG, "Present handler installed");
2258     if ((assoc->init->bend_esrequest))
2259         yaz_log (YLOG_DEBUG, "ESRequest handler installed");
2260     if ((assoc->init->bend_delete))
2261         yaz_log (YLOG_DEBUG, "Delete handler installed");
2262     if ((assoc->init->bend_scan))
2263         yaz_log (YLOG_DEBUG, "Scan handler installed");
2264     if ((assoc->init->bend_segment))
2265         yaz_log (YLOG_DEBUG, "Segment handler installed");
2266
2267     resp->referenceId = req->referenceId;
2268     *options = '\0';
2269     /* let's tell the client what we can do */
2270     if (ODR_MASK_GET(req->options, Z_Options_search))
2271     {
2272         ODR_MASK_SET(resp->options, Z_Options_search);
2273         strcat(options, "srch");
2274     }
2275     if (ODR_MASK_GET(req->options, Z_Options_present))
2276     {
2277         ODR_MASK_SET(resp->options, Z_Options_present);
2278         strcat(options, " prst");
2279     }
2280     if (ODR_MASK_GET(req->options, Z_Options_delSet) &&
2281         assoc->init->bend_delete)
2282     {
2283         ODR_MASK_SET(resp->options, Z_Options_delSet);
2284         strcat(options, " del");
2285     }
2286     if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
2287         assoc->init->bend_esrequest)
2288     {
2289         ODR_MASK_SET(resp->options, Z_Options_extendedServices);
2290         strcat (options, " extendedServices");
2291     }
2292     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
2293     {
2294         ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
2295         strcat(options, " namedresults");
2296     }
2297     if (ODR_MASK_GET(req->options, Z_Options_scan) && assoc->init->bend_scan)
2298     {
2299         ODR_MASK_SET(resp->options, Z_Options_scan);
2300         strcat(options, " scan");
2301     }
2302     if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
2303     {
2304         ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
2305         strcat(options, " concurrop");
2306     }
2307     if (ODR_MASK_GET(req->options, Z_Options_sort) && assoc->init->bend_sort)
2308     {
2309         ODR_MASK_SET(resp->options, Z_Options_sort);
2310         strcat(options, " sort");
2311     }
2312
2313     if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
2314     {
2315         Z_OtherInformationUnit *p0;
2316
2317         if (!assoc->init->charneg_response)
2318         {
2319             if (assoc->init->query_charset)
2320             {
2321                 assoc->init->charneg_response = yaz_set_response_charneg(
2322                     assoc->encode, assoc->init->query_charset, 0,
2323                     assoc->init->records_in_same_charset);
2324             }
2325             else
2326             {
2327                 yaz_log(YLOG_WARN, "default query_charset not defined by backend");
2328             }
2329         }
2330         if (assoc->init->charneg_response
2331             && (p0=yaz_oi_update(&resp->otherInfo, assoc->encode, NULL, 0, 0)))
2332         {
2333             p0->which = Z_OtherInfo_externallyDefinedInfo;
2334             p0->information.externallyDefinedInfo =
2335                 assoc->init->charneg_response;
2336             ODR_MASK_SET(resp->options, Z_Options_negotiationModel);
2337             strcat(options, " negotiation");
2338         }
2339     }
2340     if (ODR_MASK_GET(req->options, Z_Options_triggerResourceCtrl))
2341         ODR_MASK_SET(resp->options, Z_Options_triggerResourceCtrl);
2342
2343     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
2344     {
2345         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
2346         assoc->version = 1; /* 1 & 2 are equivalent */
2347     }
2348     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
2349     {
2350         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
2351         assoc->version = 2;
2352     }
2353     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
2354     {
2355         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
2356         assoc->version = 3;
2357     }
2358
2359     yaz_log(log_requestdetail, "Negotiated to v%d: %s", assoc->version, options);
2360
2361     if (*req->maximumRecordSize < assoc->maximumRecordSize)
2362         assoc->maximumRecordSize = *req->maximumRecordSize;
2363
2364     if (*req->preferredMessageSize < assoc->preferredMessageSize)
2365         assoc->preferredMessageSize = *req->preferredMessageSize;
2366
2367     resp->preferredMessageSize = &assoc->preferredMessageSize;
2368     resp->maximumRecordSize = &assoc->maximumRecordSize;
2369
2370     resp->implementationId = odr_prepend(assoc->encode,
2371                 assoc->init->implementation_id,
2372                 resp->implementationId);
2373
2374     resp->implementationName = odr_prepend(assoc->encode,
2375                 assoc->init->implementation_name,
2376                 odr_prepend(assoc->encode, "GFS", resp->implementationName));
2377
2378     version = odr_strdup(assoc->encode, "$Revision: 1.128 $");
2379     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
2380         version[strlen(version)-2] = '\0';
2381     resp->implementationVersion = odr_prepend(assoc->encode,
2382                 assoc->init->implementation_version,
2383                 odr_prepend(assoc->encode, &version[11],
2384                             resp->implementationVersion));
2385
2386     if (binitres->errcode)
2387     {
2388         assoc->state = ASSOC_DEAD;
2389         resp->userInformationField =
2390             init_diagnostics(assoc->encode, binitres->errcode,
2391                              binitres->errstring);
2392         *resp->result = 0;
2393     }
2394     if (log_request)
2395     {
2396         if (!req->idAuthentication)
2397             yaz_log(log_request, "Auth none");
2398         else if (req->idAuthentication->which == Z_IdAuthentication_open)
2399         {
2400             const char *open = req->idAuthentication->u.open;
2401             const char *slash = strchr(open, '/');
2402             int len;
2403             if (slash)
2404                 len = slash - open;
2405             else
2406                 len = strlen(open);
2407                 yaz_log(log_request, "Auth open %.*s", len, open);
2408         }
2409         else if (req->idAuthentication->which == Z_IdAuthentication_idPass)
2410         {
2411             const char *user = req->idAuthentication->u.idPass->userId;
2412             const char *group = req->idAuthentication->u.idPass->groupId;
2413             yaz_log(log_request, "Auth idPass %s %s",
2414                     user ? user : "-", group ? group : "-");
2415         }
2416         else if (req->idAuthentication->which
2417                  == Z_IdAuthentication_anonymous)
2418         {
2419             yaz_log(log_request, "Auth anonymous");
2420         }
2421         else
2422         {
2423             yaz_log(log_request, "Auth other");
2424         }
2425     }
2426     if (log_request)
2427     {
2428         WRBUF wr = wrbuf_alloc();
2429         wrbuf_printf(wr, "Init ");
2430         if (binitres->errcode)
2431             wrbuf_printf(wr, "ERROR %d", binitres->errcode);
2432         else
2433             wrbuf_printf(wr, "OK -");
2434         wrbuf_printf(wr, " ID:%s Name:%s Version:%s",
2435                      (req->implementationId ? req->implementationId :"-"),
2436                      (req->implementationName ?
2437                       req->implementationName : "-"),
2438                      (req->implementationVersion ?
2439                       req->implementationVersion : "-")
2440             );
2441         yaz_log(log_request, "%s", wrbuf_cstr(wr));
2442         wrbuf_destroy(wr);
2443     }
2444     return apdu;
2445 }
2446
2447 /*
2448  * Set the specified `errcode' and `errstring' into a UserInfo-1
2449  * external to be returned to the client in accordance with Z35.90
2450  * Implementor Agreement 5 (Returning diagnostics in an InitResponse):
2451  *      http://lcweb.loc.gov/z3950/agency/agree/initdiag.html
2452  */
2453 static Z_External *init_diagnostics(ODR odr, int error, const char *addinfo)
2454 {
2455     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2456         addinfo ? " -- " : "", addinfo ? addinfo : "");
2457     return zget_init_diagnostics(odr, error, addinfo);
2458 }
2459
2460 /*
2461  * nonsurrogate diagnostic record.
2462  */
2463 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
2464 {
2465     Z_Records *rec = (Z_Records *) odr_malloc (assoc->encode, sizeof(*rec));
2466
2467     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2468             addinfo ? " -- " : "", addinfo ? addinfo : "");
2469
2470     rec->which = Z_Records_NSD;
2471     rec->u.nonSurrogateDiagnostic = zget_DefaultDiagFormat(assoc->encode,
2472                                                            error, addinfo);
2473     return rec;
2474 }
2475
2476 /*
2477  * surrogate diagnostic.
2478  */
2479 static Z_NamePlusRecord *surrogatediagrec(association *assoc,
2480                                           const char *dbname,
2481                                           int error, const char *addinfo)
2482 {
2483     yaz_log(log_requestdetail, "[%d] %s%s%s", error, diagbib1_str(error),
2484             addinfo ? " -- " : "", addinfo ? addinfo : "");
2485     return zget_surrogateDiagRec(assoc->encode, dbname, error, addinfo);
2486 }
2487
2488 static Z_Records *pack_records(association *a, char *setname, int start,
2489                                int *num, Z_RecordComposition *comp,
2490                                int *next, int *pres,
2491                                Z_ReferenceId *referenceId,
2492                                Odr_oid *oid, int *errcode)
2493 {
2494     int recno, total_length = 0, toget = *num, dumped_records = 0;
2495     Z_Records *records =
2496         (Z_Records *) odr_malloc (a->encode, sizeof(*records));
2497     Z_NamePlusRecordList *reclist =
2498         (Z_NamePlusRecordList *) odr_malloc (a->encode, sizeof(*reclist));
2499     Z_NamePlusRecord **list =
2500         (Z_NamePlusRecord **) odr_malloc (a->encode, sizeof(*list) * toget);
2501
2502     records->which = Z_Records_DBOSD;
2503     records->u.databaseOrSurDiagnostics = reclist;
2504     reclist->num_records = 0;
2505     reclist->records = list;
2506     *pres = Z_PresentStatus_success;
2507     *num = 0;
2508     *next = 0;
2509
2510     yaz_log(log_requestdetail, "Request to pack %d+%d %s", start, toget, setname);
2511     yaz_log(log_requestdetail, "pms=%d, mrs=%d", a->preferredMessageSize,
2512         a->maximumRecordSize);
2513     for (recno = start; reclist->num_records < toget; recno++)
2514     {
2515         bend_fetch_rr freq;
2516         Z_NamePlusRecord *thisrec;
2517         int this_length = 0;
2518         /*
2519          * we get the number of bytes allocated on the stream before any
2520          * allocation done by the backend - this should give us a reasonable
2521          * idea of the total size of the data so far.
2522          */
2523         total_length = odr_total(a->encode) - dumped_records;
2524         freq.errcode = 0;
2525         freq.errstring = 0;
2526         freq.basename = 0;
2527         freq.len = 0;
2528         freq.record = 0;
2529         freq.last_in_set = 0;
2530         freq.setname = setname;
2531         freq.surrogate_flag = 0;
2532         freq.number = recno;
2533         freq.comp = comp;
2534         freq.request_format = oid;
2535         freq.output_format = 0;
2536         freq.stream = a->encode;
2537         freq.print = a->print;
2538         freq.referenceId = referenceId;
2539         freq.schema = 0;
2540
2541         retrieve_fetch(a, &freq);
2542
2543         *next = freq.last_in_set ? 0 : recno + 1;
2544
2545         /* backend should be able to signal whether error is system-wide
2546            or only pertaining to current record */
2547         if (freq.errcode)
2548         {
2549             if (!freq.surrogate_flag)
2550             {
2551                 char s[20];
2552                 *pres = Z_PresentStatus_failure;
2553                 /* for 'present request out of range',
2554                    set addinfo to record position if not set */
2555                 if (freq.errcode == YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE  &&
2556                                 freq.errstring == 0)
2557                 {
2558                     sprintf (s, "%d", recno);
2559                     freq.errstring = s;
2560                 }
2561                 if (errcode)
2562                     *errcode = freq.errcode;
2563                 return diagrec(a, freq.errcode, freq.errstring);
2564             }
2565             reclist->records[reclist->num_records] =
2566                 surrogatediagrec(a, freq.basename, freq.errcode,
2567                                  freq.errstring);
2568             reclist->num_records++;
2569             continue;
2570         }
2571         if (freq.record == 0)  /* no error and no record ? */
2572         {
2573             *next = 0;   /* signal end-of-set and stop */
2574             break;
2575         }
2576         if (freq.len >= 0)
2577             this_length = freq.len;
2578         else
2579             this_length = odr_total(a->encode) - total_length - dumped_records;
2580         yaz_log(YLOG_DEBUG, "  fetched record, len=%d, total=%d dumped=%d",
2581             this_length, total_length, dumped_records);
2582         if (a->preferredMessageSize > 0 &&
2583                 this_length + total_length > a->preferredMessageSize)
2584         {
2585             /* record is small enough, really */
2586             if (this_length <= a->preferredMessageSize && recno > start)
2587             {
2588                 yaz_log(log_requestdetail, "  Dropped last normal-sized record");
2589                 *pres = Z_PresentStatus_partial_2;
2590                 break;
2591             }
2592             /* record can only be fetched by itself */
2593             if (this_length < a->maximumRecordSize)
2594             {
2595                 yaz_log(log_requestdetail, "  Record > prefmsgsz");
2596                 if (toget > 1)
2597                 {
2598                     yaz_log(YLOG_DEBUG, "  Dropped it");
2599                     reclist->records[reclist->num_records] =
2600                          surrogatediagrec(a, freq.basename, 16, 0);
2601                     reclist->num_records++;
2602                     dumped_records += this_length;
2603                     continue;
2604                 }
2605             }
2606             else /* too big entirely */
2607             {
2608                 yaz_log(log_requestdetail, "Record > maxrcdsz this=%d max=%d",
2609                         this_length, a->maximumRecordSize);
2610                 reclist->records[reclist->num_records] =
2611                     surrogatediagrec(a, freq.basename, 17, 0);
2612                 reclist->num_records++;
2613                 dumped_records += this_length;
2614                 continue;
2615             }
2616         }
2617
2618         if (!(thisrec = (Z_NamePlusRecord *)
2619               odr_malloc(a->encode, sizeof(*thisrec))))
2620             return 0;
2621         thisrec->databaseName = odr_strdup_null(a->encode, freq.basename);
2622         thisrec->which = Z_NamePlusRecord_databaseRecord;
2623
2624         if (!freq.output_format)
2625             freq.output_format = freq.request_format;
2626         thisrec->u.databaseRecord = z_ext_record_oid(
2627             a->encode, freq.output_format, freq.record, freq.len);
2628         if (!thisrec->u.databaseRecord)
2629             return 0;
2630         reclist->records[reclist->num_records] = thisrec;
2631         reclist->num_records++;
2632     }
2633     *num = reclist->num_records;
2634     return records;
2635 }
2636
2637 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
2638     int *fd)
2639 {
2640     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2641     bend_search_rr *bsrr =
2642         (bend_search_rr *)nmem_malloc (reqb->request_mem, sizeof(*bsrr));
2643
2644     yaz_log(log_requestdetail, "Got SearchRequest.");
2645     bsrr->fd = fd;
2646     bsrr->request = reqb;
2647     bsrr->association = assoc;
2648     bsrr->referenceId = req->referenceId;
2649     save_referenceId (reqb, bsrr->referenceId);
2650     bsrr->srw_sortKeys = 0;
2651     bsrr->srw_setname = 0;
2652     bsrr->srw_setnameIdleTime = 0;
2653     bsrr->estimated_hit_count = 0;
2654     bsrr->partial_resultset = 0;
2655
2656     yaz_log (log_requestdetail, "ResultSet '%s'", req->resultSetName);
2657     if (req->databaseNames)
2658     {
2659         int i;
2660         for (i = 0; i < req->num_databaseNames; i++)
2661             yaz_log(log_requestdetail, "Database '%s'", req->databaseNames[i]);
2662     }
2663
2664     yaz_log_zquery_level(log_requestdetail,req->query);
2665
2666     if (assoc->init->bend_search)
2667     {
2668         bsrr->setname = req->resultSetName;
2669         bsrr->replace_set = *req->replaceIndicator;
2670         bsrr->num_bases = req->num_databaseNames;
2671         bsrr->basenames = req->databaseNames;
2672         bsrr->query = req->query;
2673         bsrr->stream = assoc->encode;
2674         nmem_transfer(odr_getmem(bsrr->stream), reqb->request_mem);
2675         bsrr->decode = assoc->decode;
2676         bsrr->print = assoc->print;
2677         bsrr->hits = 0;
2678         bsrr->errcode = 0;
2679         bsrr->errstring = NULL;
2680         bsrr->search_info = NULL;
2681
2682         if (assoc->server && assoc->server->cql_transform
2683             && req->query->which == Z_Query_type_104
2684             && req->query->u.type_104->which == Z_External_CQL)
2685         {
2686             /* have a CQL query and a CQL to PQF transform .. */
2687             int srw_errcode =
2688                 cql2pqf(bsrr->stream, req->query->u.type_104->u.cql,
2689                         assoc->server->cql_transform, bsrr->query);
2690             if (srw_errcode)
2691                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2692         }
2693
2694         if (assoc->server && assoc->server->ccl_transform
2695             && req->query->which == Z_Query_type_2) /*CCL*/
2696         {
2697             /* have a CCL query and a CCL to PQF transform .. */
2698             int srw_errcode =
2699                 ccl2pqf(bsrr->stream, req->query->u.type_2,
2700                         assoc->server->ccl_transform, bsrr);
2701             if (srw_errcode)
2702                 bsrr->errcode = yaz_diag_srw_to_bib1(srw_errcode);
2703         }
2704
2705         if (!bsrr->errcode)
2706             (assoc->init->bend_search)(assoc->backend, bsrr);
2707         if (!bsrr->request)  /* backend not ready with the search response */
2708             return 0;  /* should not be used any more */
2709     }
2710     else
2711     {
2712         /* FIXME - make a diagnostic for it */
2713         yaz_log(YLOG_WARN,"Search not supported ?!?!");
2714     }
2715     return response_searchRequest(assoc, reqb, bsrr, fd);
2716 }
2717
2718 int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
2719
2720 /*
2721  * Prepare a searchresponse based on the backend results. We probably want
2722  * to look at making the fetching of records nonblocking as well, but
2723  * so far, we'll keep things simple.
2724  * If bsrt is null, that means we're called in response to a communications
2725  * event, and we'll have to get the response for ourselves.
2726  */
2727 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
2728     bend_search_rr *bsrt, int *fd)
2729 {
2730     Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
2731     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
2732     Z_SearchResponse *resp = (Z_SearchResponse *)
2733         odr_malloc (assoc->encode, sizeof(*resp));
2734     int *nulint = odr_intdup (assoc->encode, 0);
2735     int *next = odr_intdup(assoc->encode, 0);
2736     int *none = odr_intdup(assoc->encode, Z_SearchResponse_none);
2737     int returnedrecs = 0;
2738
2739     apdu->which = Z_APDU_searchResponse;
2740     apdu->u.searchResponse = resp;
2741     resp->referenceId = req->referenceId;
2742     resp->additionalSearchInfo = 0;
2743     resp->otherInfo = 0;
2744     *fd = -1;
2745     if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
2746     {
2747         yaz_log(YLOG_FATAL, "Bad result from backend");
2748         return 0;
2749     }
2750     else if (bsrt->errcode)
2751     {
2752         resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
2753         resp->resultCount = nulint;
2754         resp->numberOfRecordsReturned = nulint;
2755         resp->nextResultSetPosition = nulint;
2756         resp->searchStatus = nulint;
2757         resp->resultSetStatus = none;
2758         resp->presentStatus = 0;
2759     }
2760     else
2761     {
2762         bool_t *sr = odr_intdup(assoc->encode, 1);
2763         int *toget = odr_intdup(assoc->encode, 0);
2764         Z_RecordComposition comp, *compp = 0;
2765
2766         yaz_log (log_requestdetail, "resultCount: %d", bsrt->hits);
2767
2768         resp->records = 0;
2769         resp->resultCount = &bsrt->hits;
2770
2771         comp.which = Z_RecordComp_simple;
2772         /* how many records does the user agent want, then? */
2773         if (bsrt->hits <= *req->smallSetUpperBound)
2774         {
2775             *toget = bsrt->hits;
2776             if ((comp.u.simple = req->smallSetElementSetNames))
2777                 compp = &comp;
2778         }
2779         else if (bsrt->hits < *req->largeSetLowerBound)
2780         {
2781             *toget = *req->mediumSetPresentNumber;
2782             if (*toget > bsrt->hits)
2783                 *toget = bsrt->hits;
2784             if ((comp.u.simple = req->mediumSetElementSetNames))
2785                 compp = &comp;
2786         }
2787         else
2788             *toget = 0;
2789
2790         if (*toget && !resp->records)
2791         {
2792             int *presst = odr_intdup(assoc->encode, 0);
2793             /* Call bend_present if defined */
2794             if (assoc->init->bend_present)
2795             {
2796                 bend_present_rr *bprr = (bend_present_rr *)
2797                     nmem_malloc (reqb->request_mem, sizeof(*bprr));
2798                 bprr->setname = req->resultSetName;
2799                 bprr->start = 1;
2800                 bprr->number = *toget;
2801                 bprr->format = req->preferredRecordSyntax;
2802                 bprr->comp = compp;
2803                 bprr->referenceId = req->referenceId;
2804                 bprr->stream = assoc->encode;
2805                 bprr->print = assoc->print;
2806                 bprr->request = reqb;
2807                 bprr->association = assoc;
2808                 bprr->errcode = 0;
2809                 bprr->errstring = NULL;
2810                 (*assoc->init->bend_present)(assoc->backend, bprr);
2811
2812                 if (!bprr->request)
2813                     return 0;
2814                 if (bprr->errcode)
2815                 {
2816                     resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2817                     *resp->presentStatus = Z_PresentStatus_failure;
2818                 }
2819             }
2820
2821             if (!resp->records)
2822                 resp->records = pack_records(
2823                     assoc, req->resultSetName, 1,
2824                     toget, compp, next, presst, req->referenceId,
2825                     req->preferredRecordSyntax, NULL);
2826             if (!resp->records)
2827                 return 0;
2828             resp->numberOfRecordsReturned = toget;
2829             returnedrecs = *toget;
2830             resp->presentStatus = presst;
2831         }
2832         else
2833         {
2834             if (*resp->resultCount)
2835                 *next = 1;
2836             resp->numberOfRecordsReturned = nulint;
2837             resp->presentStatus = 0;
2838         }
2839         resp->nextResultSetPosition = next;
2840         resp->searchStatus = sr;
2841         resp->resultSetStatus = 0;
2842         if (bsrt->estimated_hit_count)
2843         {
2844             resp->resultSetStatus = odr_intdup(assoc->encode,
2845                                                Z_SearchResponse_estimate);
2846         }
2847         else if (bsrt->partial_resultset)
2848         {
2849             resp->resultSetStatus = odr_intdup(assoc->encode,
2850                                                Z_SearchResponse_subset);
2851         }
2852     }
2853     resp->additionalSearchInfo = bsrt->search_info;
2854
2855     if (log_request)
2856     {
2857         int i;
2858         WRBUF wr = wrbuf_alloc();
2859
2860         for (i = 0 ; i < req->num_databaseNames; i++){
2861             if (i)
2862                 wrbuf_printf(wr, "+");
2863             wrbuf_printf(wr, req->databaseNames[i]);
2864         }
2865         wrbuf_printf(wr, " ");
2866
2867         if (bsrt->errcode)
2868             wrbuf_printf(wr, "ERROR %d", bsrt->errcode);
2869         else
2870             wrbuf_printf(wr, "OK %d", bsrt->hits);
2871         wrbuf_printf(wr, " %s 1+%d ",
2872                      req->resultSetName, returnedrecs);
2873         yaz_query_to_wrbuf(wr, req->query);
2874
2875         yaz_log(log_request, "Search %s", wrbuf_cstr(wr));
2876         wrbuf_destroy(wr);
2877     }
2878     return apdu;
2879 }
2880
2881 /*
2882  * Maybe we got a little over-friendly when we designed bend_fetch to
2883  * get only one record at a time. Some backends can optimise multiple-record
2884  * fetches, and at any rate, there is some overhead involved in
2885  * all that selecting and hopping around. Problem is, of course, that the
2886  * frontend can't know ahead of time how many records it'll need to
2887  * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
2888  * is downright lousy as a bulk data transfer protocol.
2889  *
2890  * To start with, we'll do the fetching of records from the backend
2891  * in one operation: To save some trips in and out of the event-handler,
2892  * and to simplify the interface to pack_records. At any rate, asynch
2893  * operation is more fun in operations that have an unpredictable execution
2894  * speed - which is normally more true for search than for present.
2895  */
2896 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
2897                                       int *fd)
2898 {
2899     Z_PresentRequest *req = reqb->apdu_request->u.presentRequest;
2900     Z_APDU *apdu;
2901     Z_PresentResponse *resp;
2902     int *next;
2903     int *num;
2904     int errcode = 0;
2905     const char *errstring = 0;
2906
2907     yaz_log(log_requestdetail, "Got PresentRequest.");
2908
2909     resp = (Z_PresentResponse *)odr_malloc (assoc->encode, sizeof(*resp));
2910     resp->records = 0;
2911     resp->presentStatus = odr_intdup(assoc->encode, 0);
2912     if (assoc->init->bend_present)
2913     {
2914         bend_present_rr *bprr = (bend_present_rr *)
2915             nmem_malloc (reqb->request_mem, sizeof(*bprr));
2916         bprr->setname = req->resultSetId;
2917         bprr->start = *req->resultSetStartPoint;
2918         bprr->number = *req->numberOfRecordsRequested;
2919         bprr->format = req->preferredRecordSyntax;
2920         bprr->comp = req->recordComposition;
2921         bprr->referenceId = req->referenceId;
2922         bprr->stream = assoc->encode;
2923         bprr->print = assoc->print;
2924         bprr->request = reqb;
2925         bprr->association = assoc;
2926         bprr->errcode = 0;
2927         bprr->errstring = NULL;
2928         (*assoc->init->bend_present)(assoc->backend, bprr);
2929
2930         if (!bprr->request)
2931             return 0; /* should not happen */
2932         if (bprr->errcode)
2933         {
2934             resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
2935             *resp->presentStatus = Z_PresentStatus_failure;
2936             errcode = bprr->errcode;
2937             errstring = bprr->errstring;
2938         }
2939     }
2940     apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
2941     next = odr_intdup(assoc->encode, 0);
2942     num = odr_intdup(assoc->encode, 0);
2943
2944     apdu->which = Z_APDU_presentResponse;
2945     apdu->u.presentResponse = resp;
2946     resp->referenceId = req->referenceId;
2947     resp->otherInfo = 0;
2948
2949     if (!resp->records)
2950     {
2951         *num = *req->numberOfRecordsRequested;
2952         resp->records =
2953             pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
2954                          num, req->recordComposition, next,
2955                          resp->presentStatus,
2956                          req->referenceId, req->preferredRecordSyntax,
2957                          &errcode);
2958     }
2959     if (log_request)
2960     {
2961         WRBUF wr = wrbuf_alloc();
2962         wrbuf_printf(wr, "Present ");
2963
2964         if (*resp->presentStatus == Z_PresentStatus_failure)
2965             wrbuf_printf(wr, "ERROR %d ", errcode);
2966         else if (*resp->presentStatus == Z_PresentStatus_success)
2967             wrbuf_printf(wr, "OK -  ");
2968         else
2969             wrbuf_printf(wr, "Partial %d - ", *resp->presentStatus);
2970
2971         wrbuf_printf(wr, " %s %d+%d ",
2972                 req->resultSetId, *req->resultSetStartPoint,
2973                 *req->numberOfRecordsRequested);
2974         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
2975         wrbuf_destroy(wr);
2976     }
2977     if (!resp->records)
2978         return 0;
2979     resp->numberOfRecordsReturned = num;
2980     resp->nextResultSetPosition = next;
2981
2982     return apdu;
2983 }
2984
2985 /*
2986  * Scan was implemented rather in a hurry, and with support for only the basic
2987  * elements of the service in the backend API. Suggestions are welcome.
2988  */
2989 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
2990 {
2991     Z_ScanRequest *req = reqb->apdu_request->u.scanRequest;
2992     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
2993     Z_ScanResponse *res = (Z_ScanResponse *)
2994         odr_malloc (assoc->encode, sizeof(*res));
2995     int *scanStatus = odr_intdup(assoc->encode, Z_Scan_failure);
2996     int *numberOfEntriesReturned = odr_intdup(assoc->encode, 0);
2997     Z_ListEntries *ents = (Z_ListEntries *)
2998         odr_malloc (assoc->encode, sizeof(*ents));
2999     Z_DiagRecs *diagrecs_p = NULL;
3000     bend_scan_rr *bsrr = (bend_scan_rr *)
3001         odr_malloc (assoc->encode, sizeof(*bsrr));
3002     struct scan_entry *save_entries;
3003
3004     yaz_log(log_requestdetail, "Got ScanRequest");
3005
3006     apdu->which = Z_APDU_scanResponse;
3007     apdu->u.scanResponse = res;
3008     res->referenceId = req->referenceId;
3009
3010     /* if step is absent, set it to 0 */
3011     res->stepSize = odr_intdup(assoc->encode, 0);
3012     if (req->stepSize)
3013         *res->stepSize = *req->stepSize;
3014
3015     res->scanStatus = scanStatus;
3016     res->numberOfEntriesReturned = numberOfEntriesReturned;
3017     res->positionOfTerm = 0;
3018     res->entries = ents;
3019     ents->num_entries = 0;
3020     ents->entries = NULL;
3021     ents->num_nonsurrogateDiagnostics = 0;
3022     ents->nonsurrogateDiagnostics = NULL;
3023     res->attributeSet = 0;
3024     res->otherInfo = 0;
3025
3026     if (req->databaseNames)
3027     {
3028         int i;
3029         for (i = 0; i < req->num_databaseNames; i++)
3030             yaz_log (log_requestdetail, "Database '%s'", req->databaseNames[i]);
3031     }
3032     bsrr->scanClause = 0;
3033     bsrr->errcode = 0;
3034     bsrr->errstring = 0;
3035     bsrr->num_bases = req->num_databaseNames;
3036     bsrr->basenames = req->databaseNames;
3037     bsrr->num_entries = *req->numberOfTermsRequested;
3038     bsrr->term = req->termListAndStartPoint;
3039     bsrr->referenceId = req->referenceId;
3040     bsrr->stream = assoc->encode;
3041     bsrr->print = assoc->print;
3042     bsrr->step_size = res->stepSize;
3043     bsrr->setname = yaz_oi_get_string_oid(&req->otherInfo,
3044                                           yaz_oid_userinfo_scan_set, 1, 0);
3045     bsrr->entries = 0;
3046     /* For YAZ 2.0 and earlier it was the backend handler that
3047        initialized entries (member display_term did not exist)
3048        YAZ 2.0 and later sets 'entries'  and initialize all members
3049        including 'display_term'. If YAZ 2.0 or later sees that
3050        entries was modified - we assume that it is an old handler and
3051        that 'display_term' is _not_ set.
3052     */
3053     if (bsrr->num_entries > 0)
3054     {
3055         int i;
3056         bsrr->entries = (struct scan_entry *)
3057             odr_malloc(assoc->decode, sizeof(*bsrr->entries) *
3058                        bsrr->num_entries);
3059         for (i = 0; i<bsrr->num_entries; i++)
3060         {
3061             bsrr->entries[i].term = 0;
3062             bsrr->entries[i].occurrences = 0;
3063             bsrr->entries[i].errcode = 0;
3064             bsrr->entries[i].errstring = 0;
3065             bsrr->entries[i].display_term = 0;
3066         }
3067     }
3068     save_entries = bsrr->entries;  /* save it so we can compare later */
3069
3070     bsrr->attributeset = req->attributeSet;
3071     log_scan_term_level (log_requestdetail, req->termListAndStartPoint,
3072             bsrr->attributeset);
3073     bsrr->term_position = req->preferredPositionInResponse ?
3074         *req->preferredPositionInResponse : 1;
3075
3076     ((int (*)(void *, bend_scan_rr *))
3077      (*assoc->init->bend_scan))(assoc->backend, bsrr);
3078
3079     if (bsrr->errcode)
3080         diagrecs_p = zget_DiagRecs(assoc->encode,
3081                                    bsrr->errcode, bsrr->errstring);
3082     else
3083     {
3084         int i;
3085         Z_Entry **tab = (Z_Entry **)
3086             odr_malloc (assoc->encode, sizeof(*tab) * bsrr->num_entries);
3087
3088         if (bsrr->status == BEND_SCAN_PARTIAL)
3089             *scanStatus = Z_Scan_partial_5;
3090         else
3091             *scanStatus = Z_Scan_success;
3092         ents->entries = tab;
3093         ents->num_entries = bsrr->num_entries;
3094         res->numberOfEntriesReturned = &ents->num_entries;
3095         res->positionOfTerm = &bsrr->term_position;
3096         for (i = 0; i < bsrr->num_entries; i++)
3097         {
3098             Z_Entry *e;
3099             Z_TermInfo *t;
3100             Odr_oct *o;
3101
3102             tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
3103             if (bsrr->entries[i].occurrences >= 0)
3104             {
3105                 e->which = Z_Entry_termInfo;
3106                 e->u.termInfo = t = (Z_TermInfo *)
3107                     odr_malloc(assoc->encode, sizeof(*t));
3108                 t->suggestedAttributes = 0;
3109                 t->displayTerm = 0;
3110                 if (save_entries == bsrr->entries &&
3111                     bsrr->entries[i].display_term)
3112                 {
3113                     /* the entries was _not_ set by the handler. So it's
3114                        safe to test for new member display_term. It is
3115                        NULL'ed by us.
3116                     */
3117                     t->displayTerm = odr_strdup(assoc->encode,
3118                                                 bsrr->entries[i].display_term);
3119                 }
3120                 t->alternativeTerm = 0;
3121                 t->byAttributes = 0;
3122                 t->otherTermInfo = 0;
3123                 t->globalOccurrences = &bsrr->entries[i].occurrences;
3124                 t->term = (Z_Term *)
3125                     odr_malloc(assoc->encode, sizeof(*t->term));
3126                 t->term->which = Z_Term_general;
3127                 t->term->u.general = o =
3128                     (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
3129                 o->buf = (unsigned char *)
3130                     odr_malloc(assoc->encode, o->len = o->size =
3131                                strlen(bsrr->entries[i].term));
3132                 memcpy(o->buf, bsrr->entries[i].term, o->len);
3133                 yaz_log(YLOG_DEBUG, "  term #%d: '%s' (%d)", i,
3134                          bsrr->entries[i].term, bsrr->entries[i].occurrences);
3135             }
3136             else
3137             {
3138                 Z_DiagRecs *drecs = zget_DiagRecs(assoc->encode,
3139                                                   bsrr->entries[i].errcode,
3140                                                   bsrr->entries[i].errstring);
3141                 assert (drecs->num_diagRecs == 1);
3142                 e->which = Z_Entry_surrogateDiagnostic;
3143                 assert (drecs->diagRecs[0]);
3144                 e->u.surrogateDiagnostic = drecs->diagRecs[0];
3145             }
3146         }
3147     }
3148     if (diagrecs_p)
3149     {
3150         ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
3151         ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
3152     }
3153     if (log_request)
3154     {
3155         int i;
3156         WRBUF wr = wrbuf_alloc();
3157         wrbuf_printf(wr, "Scan ");
3158         for (i = 0 ; i < req->num_databaseNames; i++)
3159         {
3160             if (i)
3161                 wrbuf_printf(wr, "+");
3162             wrbuf_printf(wr, req->databaseNames[i]);
3163         }
3164
3165         wrbuf_printf(wr, " ");
3166
3167         if (bsrr->errcode)
3168             wr_diag(wr, bsrr->errcode, bsrr->errstring);
3169         else
3170             wrbuf_printf(wr, "OK");
3171
3172         wrbuf_printf(wr, " %d - %d+%d+%d",
3173                      res->numberOfEntriesReturned ?
3174                      *res->numberOfEntriesReturned : 0,
3175                      (req->preferredPositionInResponse ?
3176                       *req->preferredPositionInResponse : 1),
3177                      *req->numberOfTermsRequested,
3178                      (res->stepSize ? *res->stepSize : 1));
3179
3180         if (bsrr->setname)
3181             wrbuf_printf(wr, "+%s", bsrr->setname);
3182
3183         wrbuf_printf(wr, " ");
3184         yaz_scan_to_wrbuf(wr, req->termListAndStartPoint,
3185                           bsrr->attributeset);
3186         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3187         wrbuf_destroy(wr);
3188     }
3189     return apdu;
3190 }
3191
3192 static Z_APDU *process_sortRequest(association *assoc, request *reqb,
3193     int *fd)
3194 {
3195     int i;
3196     Z_SortRequest *req = reqb->apdu_request->u.sortRequest;
3197     Z_SortResponse *res = (Z_SortResponse *)
3198         odr_malloc (assoc->encode, sizeof(*res));
3199     bend_sort_rr *bsrr = (bend_sort_rr *)
3200         odr_malloc (assoc->encode, sizeof(*bsrr));
3201
3202     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
3203
3204     yaz_log(log_requestdetail, "Got SortRequest.");
3205
3206     bsrr->num_input_setnames = req->num_inputResultSetNames;
3207     for (i=0;i<req->num_inputResultSetNames;i++)
3208         yaz_log(log_requestdetail, "Input resultset: '%s'",
3209                 req->inputResultSetNames[i]);
3210     bsrr->input_setnames = req->inputResultSetNames;
3211     bsrr->referenceId = req->referenceId;
3212     bsrr->output_setname = req->sortedResultSetName;
3213     yaz_log(log_requestdetail, "Output resultset: '%s'",
3214                 req->sortedResultSetName);
3215     bsrr->sort_sequence = req->sortSequence;
3216        /*FIXME - dump those sequences too */
3217     bsrr->stream = assoc->encode;
3218     bsrr->print = assoc->print;
3219
3220     bsrr->sort_status = Z_SortResponse_failure;
3221     bsrr->errcode = 0;
3222     bsrr->errstring = 0;
3223
3224     (*assoc->init->bend_sort)(assoc->backend, bsrr);
3225
3226     res->referenceId = bsrr->referenceId;
3227     res->sortStatus = odr_intdup(assoc->encode, bsrr->sort_status);
3228     res->resultSetStatus = 0;
3229     if (bsrr->errcode)
3230     {
3231         Z_DiagRecs *dr = zget_DiagRecs(assoc->encode,
3232                                        bsrr->errcode, bsrr->errstring);
3233         res->diagnostics = dr->diagRecs;
3234         res->num_diagnostics = dr->num_diagRecs;
3235     }
3236     else
3237     {
3238         res->num_diagnostics = 0;
3239         res->diagnostics = 0;
3240     }
3241     res->resultCount = 0;
3242     res->otherInfo = 0;
3243
3244     apdu->which = Z_APDU_sortResponse;
3245     apdu->u.sortResponse = res;
3246     if (log_request)
3247     {
3248         WRBUF wr = wrbuf_alloc();
3249         wrbuf_printf(wr, "Sort ");
3250         if (bsrr->errcode)
3251             wrbuf_printf(wr, " ERROR %d", bsrr->errcode);
3252         else
3253             wrbuf_printf(wr,  "OK -");
3254         wrbuf_printf(wr, " (");
3255         for (i = 0; i<req->num_inputResultSetNames; i++)
3256         {
3257             if (i)
3258                 wrbuf_printf(wr, "+");
3259             wrbuf_printf(wr, req->inputResultSetNames[i]);
3260         }
3261         wrbuf_printf(wr, ")->%s ",req->sortedResultSetName);
3262
3263         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3264         wrbuf_destroy(wr);
3265     }
3266     return apdu;
3267 }
3268
3269 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
3270     int *fd)
3271 {
3272     int i;
3273     Z_DeleteResultSetRequest *req =
3274         reqb->apdu_request->u.deleteResultSetRequest;
3275     Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
3276         odr_malloc (assoc->encode, sizeof(*res));
3277     bend_delete_rr *bdrr = (bend_delete_rr *)
3278         odr_malloc (assoc->encode, sizeof(*bdrr));
3279     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
3280
3281     yaz_log(log_requestdetail, "Got DeleteRequest.");
3282
3283     bdrr->num_setnames = req->num_resultSetList;
3284     bdrr->setnames = req->resultSetList;
3285     for (i = 0; i<req->num_resultSetList; i++)
3286         yaz_log(log_requestdetail, "resultset: '%s'",
3287                 req->resultSetList[i]);
3288     bdrr->stream = assoc->encode;
3289     bdrr->print = assoc->print;
3290     bdrr->function = *req->deleteFunction;
3291     bdrr->referenceId = req->referenceId;
3292     bdrr->statuses = 0;
3293     if (bdrr->num_setnames > 0)
3294     {
3295         bdrr->statuses = (int*)
3296             odr_malloc(assoc->encode, sizeof(*bdrr->statuses) *
3297                        bdrr->num_setnames);
3298         for (i = 0; i < bdrr->num_setnames; i++)
3299             bdrr->statuses[i] = 0;
3300     }
3301     (*assoc->init->bend_delete)(assoc->backend, bdrr);
3302
3303     res->referenceId = req->referenceId;
3304
3305     res->deleteOperationStatus = odr_intdup(assoc->encode,bdrr->delete_status);
3306
3307     res->deleteListStatuses = 0;
3308     if (bdrr->num_setnames > 0)
3309     {
3310         int i;
3311         res->deleteListStatuses = (Z_ListStatuses *)
3312             odr_malloc(assoc->encode, sizeof(*res->deleteListStatuses));
3313         res->deleteListStatuses->num = bdrr->num_setnames;
3314         res->deleteListStatuses->elements =
3315             (Z_ListStatus **)
3316             odr_malloc (assoc->encode,
3317                         sizeof(*res->deleteListStatuses->elements) *
3318                         bdrr->num_setnames);
3319         for (i = 0; i<bdrr->num_setnames; i++)
3320         {
3321             res->deleteListStatuses->elements[i] =
3322                 (Z_ListStatus *)
3323                 odr_malloc (assoc->encode,
3324                             sizeof(**res->deleteListStatuses->elements));
3325             res->deleteListStatuses->elements[i]->status = bdrr->statuses+i;
3326             res->deleteListStatuses->elements[i]->id =
3327                 odr_strdup (assoc->encode, bdrr->setnames[i]);
3328         }
3329     }
3330     res->numberNotDeleted = 0;
3331     res->bulkStatuses = 0;
3332     res->deleteMessage = 0;
3333     res->otherInfo = 0;
3334
3335     apdu->which = Z_APDU_deleteResultSetResponse;
3336     apdu->u.deleteResultSetResponse = res;
3337     if (log_request)
3338     {
3339         WRBUF wr = wrbuf_alloc();
3340         wrbuf_printf(wr, "Delete ");
3341         if (bdrr->delete_status)
3342             wrbuf_printf(wr, "ERROR %d", bdrr->delete_status);
3343         else
3344             wrbuf_printf(wr, "OK -");
3345         for (i = 0; i<req->num_resultSetList; i++)
3346             wrbuf_printf(wr, " %s ", req->resultSetList[i]);
3347         yaz_log(log_request, "%s", wrbuf_cstr(wr) );
3348         wrbuf_destroy(wr);
3349     }
3350     return apdu;
3351 }
3352
3353 static void process_close(association *assoc, request *reqb)
3354 {
3355     Z_Close *req = reqb->apdu_request->u.close;
3356     static char *reasons[] =
3357     {
3358         "finished",
3359         "shutdown",
3360         "systemProblem",
3361         "costLimit",
3362         "resources",
3363         "securityViolation",
3364         "protocolError",
3365         "lackOfActivity",
3366         "peerAbort",
3367         "unspecified"
3368     };
3369
3370     yaz_log(log_requestdetail, "Got Close, reason %s, message %s",
3371         reasons[*req->closeReason], req->diagnosticInformation ?
3372         req->diagnosticInformation : "NULL");
3373     if (assoc->version < 3) /* to make do_force respond with close */
3374         assoc->version = 3;
3375     do_close_req(assoc, Z_Close_finished,
3376                  "Association terminated by client", reqb);
3377     yaz_log(log_request,"Close OK");
3378 }
3379
3380 void save_referenceId (request *reqb, Z_ReferenceId *refid)
3381 {
3382     if (refid)
3383     {
3384         reqb->len_refid = refid->len;
3385         reqb->refid = (char *)nmem_malloc (reqb->request_mem, refid->len);
3386         memcpy (reqb->refid, refid->buf, refid->len);
3387     }
3388     else
3389     {
3390         reqb->len_refid = 0;
3391         reqb->refid = NULL;
3392     }
3393 }
3394
3395 void bend_request_send (bend_association a, bend_request req, Z_APDU *res)
3396 {
3397     process_z_response (a, req, res);
3398 }
3399
3400 bend_request bend_request_mk (bend_association a)
3401 {
3402     request *nreq = request_get (&a->outgoing);
3403     nreq->request_mem = nmem_create ();
3404     return nreq;
3405 }
3406
3407 Z_ReferenceId *bend_request_getid (ODR odr, bend_request req)
3408 {
3409     Z_ReferenceId *id;
3410     if (!req->refid)
3411         return 0;
3412     id = (Odr_oct *)odr_malloc (odr, sizeof(*odr));
3413     id->buf = (unsigned char *)odr_malloc (odr, req->len_refid);
3414     id->len = id->size = req->len_refid;
3415     memcpy (id->buf, req->refid, req->len_refid);
3416     return id;
3417 }
3418
3419 void bend_request_destroy (bend_request *req)
3420 {
3421     nmem_destroy((*req)->request_mem);
3422     request_release(*req);
3423     *req = NULL;
3424 }
3425
3426 int bend_backend_respond (bend_association a, bend_request req)
3427 {
3428     char *msg;
3429     int r;
3430     r = process_z_request (a, req, &msg);
3431     if (r < 0)
3432         yaz_log (YLOG_WARN, "%s", msg);
3433     return r;
3434 }
3435
3436 void bend_request_setdata(bend_request r, void *p)
3437 {
3438     r->clientData = p;
3439 }
3440
3441 void *bend_request_getdata(bend_request r)
3442 {
3443     return r->clientData;
3444 }
3445
3446 static Z_APDU *process_segmentRequest (association *assoc, request *reqb)
3447 {
3448     bend_segment_rr req;
3449
3450     req.segment = reqb->apdu_request->u.segmentRequest;
3451     req.stream = assoc->encode;
3452     req.decode = assoc->decode;
3453     req.print = assoc->print;
3454     req.association = assoc;
3455
3456     (*assoc->init->bend_segment)(assoc->backend, &req);
3457
3458     return 0;
3459 }
3460
3461 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
3462 {
3463     bend_esrequest_rr esrequest;
3464     const char *ext_name = "unknown";
3465
3466     Z_ExtendedServicesRequest *req =
3467         reqb->apdu_request->u.extendedServicesRequest;
3468     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
3469
3470     Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
3471
3472     esrequest.esr = reqb->apdu_request->u.extendedServicesRequest;
3473     esrequest.stream = assoc->encode;
3474     esrequest.decode = assoc->decode;
3475     esrequest.print = assoc->print;
3476     esrequest.errcode = 0;
3477     esrequest.errstring = NULL;
3478     esrequest.request = reqb;
3479     esrequest.association = assoc;
3480     esrequest.taskPackage = 0;
3481     esrequest.referenceId = req->referenceId;
3482
3483
3484     if (esrequest.esr && esrequest.esr->taskSpecificParameters)
3485     {
3486         switch(esrequest.esr->taskSpecificParameters->which)
3487         {
3488         case Z_External_itemOrder:
3489             ext_name = "ItemOrder"; break;
3490         case Z_External_update:
3491             ext_name = "Update"; break;
3492         case Z_External_update0:
3493             ext_name = "Update0"; break;
3494         case Z_External_ESAdmin:
3495             ext_name = "Admin"; break;
3496
3497         }
3498     }
3499
3500     (*assoc->init->bend_esrequest)(assoc->backend, &esrequest);
3501
3502     /* If the response is being delayed, return NULL */
3503     if (esrequest.request == NULL)
3504         return(NULL);
3505
3506     resp->referenceId = req->referenceId;
3507
3508     if (esrequest.errcode == -1)
3509     {
3510         /* Backend service indicates request will be processed */
3511         yaz_log(log_request, "Extended Service: %s (accepted)", ext_name);
3512         *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
3513     }
3514     else if (esrequest.errcode == 0)
3515     {
3516         /* Backend service indicates request will be processed */
3517         yaz_log(log_request, "Extended Service: %s (done)", ext_name);
3518         *resp->operationStatus = Z_ExtendedServicesResponse_done;
3519     }
3520     else
3521     {
3522         Z_DiagRecs *diagRecs =
3523             zget_DiagRecs(assoc->encode, esrequest.errcode,
3524                           esrequest.errstring);
3525         /* Backend indicates error, request will not be processed */
3526         yaz_log(log_request, "Extended Service: %s (failed)", ext_name);
3527         *resp->operationStatus = Z_ExtendedServicesResponse_failure;
3528         resp->num_diagnostics = diagRecs->num_diagRecs;
3529         resp->diagnostics = diagRecs->diagRecs;
3530         if (log_request)
3531         {
3532             WRBUF wr = wrbuf_alloc();
3533             wrbuf_diags(wr, resp->num_diagnostics, resp->diagnostics);
3534             yaz_log(log_request, "EsRequest %s", wrbuf_cstr(wr) );
3535             wrbuf_destroy(wr);
3536         }
3537
3538     }
3539     /* Do something with the members of bend_extendedservice */
3540     if (esrequest.taskPackage)
3541     {
3542         resp->taskPackage = z_ext_record_oid(
3543             assoc->encode, yaz_oid_recsyn_extended,
3544             (const char *)  esrequest.taskPackage, -1
3545             );
3546     }
3547     yaz_log(YLOG_DEBUG,"Send the result apdu");
3548     return apdu;
3549 }
3550
3551 int bend_assoc_is_alive(bend_association assoc)
3552 {
3553     if (assoc->state == ASSOC_DEAD)
3554         return 0; /* already marked as dead. Don't check I/O chan anymore */
3555
3556     return iochan_is_alive(assoc->client_chan);
3557 }
3558
3559
3560 /*
3561  * Local variables:
3562  * c-basic-offset: 4
3563  * indent-tabs-mode: nil
3564  * End:
3565  * vim: shiftwidth=4 tabstop=8 expandtab
3566  */
3567