src/seshigh.c

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