server/seshigh.c

   1 /*
   2  * Copyright (c) 1995-1999, Index Data
   3  * See the file LICENSE for details.
   4  * Sebastian Hammer, Adam Dickmeiss
   5  *
   6  * $Log: seshigh.c,v $
   7  * Revision 1.93  1999-07-06 12:17:15  adam
   8  * Added option -1 that runs server once (for profiling purposes).
   9  *
  10  * Revision 1.92  1999/06/17 10:54:45  adam
  11  * Added facility to specify implementation version - and name
  12  * for server.
  13  *
  14  * Revision 1.91  1999/06/01 14:29:12  adam
  15  * Work on Extended Services.
  16  *
  17  * Revision 1.90  1999/05/27 13:02:20  adam
  18  * Assigned OID for old DB Update (VAL_DBUPDATE0).
  19  *
  20  * Revision 1.89  1999/05/26 15:24:26  adam
  21  * Fixed minor bugs regarding DB Update (introduced by previous commit).
  22  *
  23  * Revision 1.88  1999/04/20 09:56:48  adam
  24  * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
  25  * Modified all encoders/decoders to reflect this change.
  26  *
  27  * Revision 1.87  1999/03/31 11:18:25  adam
  28  * Implemented odr_strdup. Added Reference ID to backend server API.
  29  *
  30  * Revision 1.86  1999/02/02 13:57:38  adam
  31  * Uses preprocessor define WIN32 instead of WINDOWS to build code
  32  * for Microsoft WIN32.
  33  *
  34  * Revision 1.85  1998/11/17 09:52:59  adam
  35  * Fixed minor bug (introduced by previous commit).
  36  *
  37  * Revision 1.84  1998/11/16 16:02:32  adam
  38  * Added loggin utilies, log_rpn_query and log_scan_term. These used
  39  * to be part of Zebra.
  40  *
  41  * Revision 1.83  1998/11/03 10:09:36  adam
  42  * Fixed bug regarding YC.
  43  *
  44  * Revision 1.82  1998/10/20 14:00:30  quinn
  45  * Fixed Scan
  46  *
  47  * Revision 1.81  1998/10/13 16:12:24  adam
  48  * Added support for Surrogate Diagnostics for Scan Term entries.
  49  *
  50  * Revision 1.80  1998/09/02 12:41:53  adam
  51  * Added decode stream in bend search structures.
  52  *
  53  * Revision 1.79  1998/08/19 16:10:08  adam
  54  * Changed som member names of DeleteResultSetRequest/Response.
  55  *
  56  * Revision 1.78  1998/08/03 10:23:55  adam
  57  * Fixed bug regarding Options for Sort.
  58  *
  59  * Revision 1.77  1998/07/20 12:38:42  adam
  60  * Implemented delete result set service to server API.
  61  *
  62  * Revision 1.76  1998/05/27 16:57:07  adam
  63  * Support for surrogate diagnostic records added for bend_fetch.
  64  *
  65  * Revision 1.75  1998/05/18 10:13:07  adam
  66  * Fixed call to es_request handler - extra argument was passed.
  67  *
  68  * Revision 1.74  1998/03/31 15:13:20  adam
  69  * Development towards compiled ASN.1.
  70  *
  71  * Revision 1.73  1998/03/31 11:07:45  adam
  72  * Furhter work on UNIverse resource report.
  73  * Added Extended Services handling in frontend server.
  74  *
  75  * Revision 1.72  1998/02/11 11:53:35  adam
  76  * Changed code so that it compiles as C++.
  77  *
  78  * Revision 1.71  1998/02/10 11:03:57  adam
  79  * Added support for extended handlers in backend server interface.
  80  *
  81  * Revision 1.70  1998/01/29 13:15:35  adam
  82  * Implemented sort for the backend interface.
  83  *
  84  * Revision 1.69  1997/09/30 11:48:12  adam
  85  * Fixed bug introduced by previous commit.
  86  *
  87  * Revision 1.68  1997/09/29 13:18:59  adam
  88  * Added function, oid_ent_to_oid, to replace the function
  89  * oid_getoidbyent, which is not thread safe.
  90  *
  91  * Revision 1.67  1997/09/17 12:10:40  adam
  92  * YAZ version 1.4.
  93  *
  94  * Revision 1.66  1997/09/05 15:26:44  adam
  95  * Added ODR encode in search and scen bend request structures.
  96  * Fixed a few enums that caused trouble with C++.
  97  *
  98  * Revision 1.65  1997/09/01 08:53:01  adam
  99  * New windows NT/95 port using MSV5.0. The test server 'ztest' was
 100  * moved a separate directory. MSV5.0 project server.dsp created.
 101  * As an option, the server can now operate as an NT service.
 102  *
 103  * Revision 1.64  1997/04/30 08:52:11  quinn
 104  * Null
 105  *
 106  * Revision 1.63  1996/10/11  11:57:26  quinn
 107  * Smallish
 108  *
 109  * Revision 1.62  1996/07/06  19:58:35  quinn
 110  * System headerfiles gathered in yconfig
 111  *
 112  * Revision 1.61  1996/06/10  08:56:16  quinn
 113  * Work on Summary.
 114  *
 115  * Revision 1.60  1996/05/30  11:03:10  quinn
 116  * Fixed NextresultSetPosition bug fixed.
 117  *
 118  * Revision 1.59  1996/05/14  09:26:46  quinn
 119  * Added attribute set to scan backend
 120  *
 121  * Revision 1.58  1996/02/20  12:53:04  quinn
 122  * Chanes to SCAN
 123  *
 124  * Revision 1.57  1996/01/02  08:57:47  quinn
 125  * Changed enums in the ASN.1 .h files to #defines. Changed oident.class to oclass
 126  *
 127  * Revision 1.56  1995/12/14  11:09:57  quinn
 128  * Work on Explain
 129  *
 130  * Revision 1.55  1995/11/08  17:41:37  quinn
 131  * Smallish.
 132  *
 133  * Revision 1.54  1995/11/08  15:11:29  quinn
 134  * Log of close transmit.
 135  *
 136  * Revision 1.53  1995/11/01  13:54:58  quinn
 137  * Minor adjustments
 138  *
 139  * Revision 1.52  1995/11/01  12:19:13  quinn
 140  * Second attempt to fix same bug.
 141  *
 142  * Revision 1.50  1995/10/25  16:58:32  quinn
 143  * Simple.
 144  *
 145  * Revision 1.49  1995/10/16  13:51:53  quinn
 146  * Changes to provide Especs to the backend.
 147  *
 148  * Revision 1.48  1995/10/06  08:51:20  quinn
 149  * Added Write-buffer.
 150  *
 151  * Revision 1.47  1995/08/29  14:24:16  quinn
 152  * Added second half of close-handshake
 153  *
 154  * Revision 1.46  1995/08/29  11:17:58  quinn
 155  * Added code to receive close
 156  *
 157  * Revision 1.45  1995/08/21  09:11:00  quinn
 158  * Smallish fixes to suppport new formats.
 159  *
 160  * Revision 1.44  1995/08/17  12:45:25  quinn
 161  * Fixed minor problems with GRS-1. Added support in c&s.
 162  *
 163  * Revision 1.43  1995/08/15  12:00:31  quinn
 164  * Updated External
 165  *
 166  * Revision 1.42  1995/08/15  11:16:50  quinn
 167  *
 168  * Revision 1.41  1995/08/02  10:23:06  quinn
 169  * Smallish
 170  *
 171  * Revision 1.40  1995/07/31  14:34:26  quinn
 172  * Fixed bug in process_searchResponse (numberOfRecordsReturned).
 173  *
 174  * Revision 1.39  1995/06/27  13:21:00  quinn
 175  * SUTRS support
 176  *
 177  * Revision 1.38  1995/06/19  12:39:11  quinn
 178  * Fixed bug in timeout code. Added BER dumper.
 179  *
 180  * Revision 1.37  1995/06/16  13:16:14  quinn
 181  * Fixed Defaultdiagformat.
 182  *
 183  * Revision 1.36  1995/06/16  10:31:36  quinn
 184  * Added session timeout.
 185  *
 186  * Revision 1.35  1995/06/15  07:45:14  quinn
 187  * Moving to v3.
 188  *
 189  * Revision 1.34  1995/06/14  15:26:46  quinn
 190  * *** empty log message ***
 191  *
 192  * Revision 1.33  1995/06/06  14:57:05  quinn
 193  * Better diagnostics.
 194  *
 195  * Revision 1.32  1995/06/06  08:41:44  quinn
 196  * Better diagnostics.
 197  *
 198  * Revision 1.31  1995/06/06  08:15:37  quinn
 199  * Cosmetic.
 200  *
 201  * Revision 1.30  1995/06/05  10:53:32  quinn
 202  * Added a better SCAN.
 203  *
 204  * Revision 1.29  1995/06/01  11:25:03  quinn
 205  * Smallish.
 206  *
 207  * Revision 1.28  1995/06/01  11:21:01  quinn
 208  * Attempting to fix a bug in pack-records. replaced break with continue
 209  * for large records, according to standard.
 210  *
 211  * Revision 1.27  1995/05/29  08:12:06  quinn
 212  * Moved oid to util
 213  *
 214  * Revision 1.26  1995/05/18  13:02:12  quinn
 215  * Smallish.
 216  *
 217  * Revision 1.25  1995/05/17  08:42:26  quinn
 218  * Transfer auth info to backend. Allow backend to reject init gracefully.
 219  *
 220  * Revision 1.24  1995/05/16  08:51:04  quinn
 221  * License, documentation, and memory fixes
 222  *
 223  * Revision 1.23  1995/05/15  13:25:10  quinn
 224  * Fixed memory bug.
 225  *
 226  * Revision 1.22  1995/05/15  11:56:39  quinn
 227  * Asynchronous facilities. Restructuring of seshigh code.
 228  *
 229  * Revision 1.21  1995/05/02  08:53:19  quinn
 230  * Trying in vain to fix comm with ISODE
 231  *
 232  * Revision 1.20  1995/04/20  15:13:00  quinn
 233  * Cosmetic
 234  *
 235  * Revision 1.19  1995/04/18  08:15:34  quinn
 236  * Added dynamic memory allocation on encoding (whew). Code is now somewhat
 237  * neater. We'll make the same change for decoding one day.
 238  *
 239  * Revision 1.18  1995/04/17  11:28:25  quinn
 240  * Smallish
 241  *
 242  * Revision 1.17  1995/04/10  10:23:36  quinn
 243  * Some work to add scan and other things.
 244  *
 245  * Revision 1.16  1995/03/31  09:18:55  quinn
 246  * Added logging.
 247  *
 248  * Revision 1.15  1995/03/30  14:03:23  quinn
 249  * Added RFC1006 as separate library
 250  *
 251  * Revision 1.14  1995/03/30  12:18:17  quinn
 252  * Fixed bug.
 253  *
 254  * Revision 1.13  1995/03/30  09:09:24  quinn
 255  * Added state-handle and some support for asynchronous activities.
 256  *
 257  * Revision 1.12  1995/03/29  15:40:16  quinn
 258  * Ongoing work. Statserv is now dynamic by default
 259  *
 260  * Revision 1.11  1995/03/28  09:16:21  quinn
 261  * Added record packing to the search request
 262  *
 263  * Revision 1.10  1995/03/27  08:34:24  quinn
 264  * Added dynamic server functionality.
 265  * Released bindings to session.c (is now redundant)
 266  *
 267  * Revision 1.9  1995/03/22  15:01:26  quinn
 268  * Adjusting record packing.
 269  *
 270  * Revision 1.8  1995/03/22  10:13:21  quinn
 271  * Working on record packer
 272  *
 273  * Revision 1.7  1995/03/21  15:53:31  quinn
 274  * Little changes.
 275  *
 276  * Revision 1.6  1995/03/21  12:30:09  quinn
 277  * Beginning to add support for record packing.
 278  *
 279  * Revision 1.5  1995/03/17  10:44:13  quinn
 280  * Added catch of null-string in makediagrec
 281  *
 282  * Revision 1.4  1995/03/17  10:18:08  quinn
 283  * Added memory management.
 284  *
 285  * Revision 1.3  1995/03/16  17:42:39  quinn
 286  * Little changes
 287  *
 288  * Revision 1.2  1995/03/16  13:29:01  quinn
 289  * Partitioned server.
 290  *
 291  * Revision 1.1  1995/03/15  16:02:10  quinn
 292  * Modded session.c to seshigh.c
 293  *
 294  */
 295
 296 /*
 297  * Frontend server logic.
 298  *
 299  * This code receives incoming APDUs, and handles client requests by means
 300  * of the backend API.
 301  *
 302  * Some of the code is getting quite involved, compared to simpler servers -
 303  * primarily because it is asynchronous both in the communication with
 304  * the user and the backend. We think the complexity will pay off in
 305  * the form of greater flexibility when more asynchronous facilities
 306  * are implemented.
 307  *
 308  * Memory management has become somewhat involved. In the simple case, where
 309  * only one PDU is pending at a time, it will simply reuse the same memory,
 310  * once it has found its working size. When we enable multiple concurrent
 311  * operations, perhaps even with multiple parallel calls to the backend, it
 312  * will maintain a pool of buffers for encoding and decoding, trying to
 313  * minimize memory allocation/deallocation during normal operation.
 314  *
 315  * TODOs include (and will be done in order of public interest):
 316  *
 317  * Support for EXPLAIN - provide simple meta-database system.
 318  * Support for access control.
 319  * Support for resource control.
 320  * Support for extended services - primarily Item Order.
 321  * Rest of Z39.50-1994
 322  *
 323  */
 324
 325 #include <yconfig.h>
 326 #include <stdlib.h>
 327 #include <stdio.h>
 328 #ifdef WIN32
 329 #include <process.h>
 330 #else
 331 #include <unistd.h>
 332 #endif
 333 #include <assert.h>
 334
 335 #include <xmalloc.h>
 336 #include <comstack.h>
 337 #include "eventl.h"
 338 #include "session.h"
 339 #include <proto.h>
 340 #include <oid.h>
 341 #include <log.h>
 342 #include <logrpn.h>
 343 #include <statserv.h>
 344
 345 #include <backend.h>
 346
 347 static int process_request(association *assoc, request *req);
 348 void backend_response(IOCHAN i, int event);
 349 static int process_response(association *assoc, request *req, Z_APDU *res);
 350 static Z_APDU *process_initRequest(association *assoc, request *reqb);
 351 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
 352     int *fd);
 353 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
 354     bend_search_rr *bsrr, int *fd);
 355 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
 356     int *fd);
 357 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd);
 358 static Z_APDU *process_sortRequest(association *assoc, request *reqb, int *fd);
 359 static void process_close(association *assoc, request *reqb);
 360 void save_referenceId (request *reqb, Z_ReferenceId *refid);
 361 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
 362     int *fd);
 363
 364 static FILE *apduf = 0; /* for use in static mode */
 365 static statserv_options_block *control_block = 0;
 366
 367 /* Chas: Added in from DALI */
 368 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
 369 /* Chas: End of addition from DALI */
 370
 371 /*
 372  * Create and initialize a new association-handle.
 373  *  channel  : iochannel for the current line.
 374  *  link     : communications channel.
 375  * Returns: 0 or a new association handle.
 376  */
 377 association *create_association(IOCHAN channel, COMSTACK link)
 378 {
 379     association *anew;
 380
 381     if (!control_block)
 382         control_block = statserv_getcontrol();
 383     if (!(anew = (association *)xmalloc(sizeof(*anew))))
 384         return 0;
 385     anew->client_chan = channel;
 386     anew->client_link = link;
 387     if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
 388         !(anew->encode = odr_createmem(ODR_ENCODE)))
 389         return 0;
 390     if (*control_block->apdufile)
 391     {
 392         char filename[256];
 393         FILE *f;
 394
 395         strcpy(filename, control_block->apdufile);
 396         if (!(anew->print = odr_createmem(ODR_PRINT)))
 397             return 0;
 398         if (*control_block->apdufile != '-')
 399         {
 400             strcpy(filename, control_block->apdufile);
 401             if (!control_block->dynamic)
 402             {
 403                 if (!apduf)
 404                 {
 405                     if (!(apduf = fopen(filename, "w")))
 406                     {
 407                         logf(LOG_WARN|LOG_ERRNO, "%s", filename);
 408                         return 0;
 409                     }
 410                     setvbuf(apduf, 0, _IONBF, 0);
 411                 }
 412                 f = apduf;
 413             }
 414             else
 415             {
 416                 sprintf(filename + strlen(filename), ".%d", getpid());
 417                 if (!(f = fopen(filename, "w")))
 418                 {
 419                     logf(LOG_WARN|LOG_ERRNO, "%s", filename);
 420                     return 0;
 421                 }
 422                 setvbuf(f, 0, _IONBF, 0);
 423             }
 424             odr_setprint(anew->print, f);
 425         }
 426     }
 427     else
 428         anew->print = 0;
 429     anew->input_buffer = 0;
 430     anew->input_buffer_len = 0;
 431     anew->backend = 0;
 432     anew->state = ASSOC_NEW;
 433     request_initq(&anew->incoming);
 434     request_initq(&anew->outgoing);
 435     anew->proto = cs_getproto(link);
 436     return anew;
 437 }
 438
 439 /*
 440  * Free association and release resources.
 441  */
 442 void destroy_association(association *h)
 443 {
 444     odr_destroy(h->decode);
 445     odr_destroy(h->encode);
 446     if (h->print)
 447         odr_destroy(h->print);
 448     if (h->input_buffer)
 449     xfree(h->input_buffer);
 450     if (h->backend)
 451         bend_close(h->backend);
 452     while (request_deq(&h->incoming));
 453     while (request_deq(&h->outgoing));
 454     request_delq(&h->incoming);
 455     request_delq(&h->outgoing);
 456     xfree(h);
 457     if (control_block && control_block->one_shot)
 458         exit (0);
 459 }
 460
 461 static void do_close_req(association *a, int reason, char *message,
 462                          request *req)
 463 {
 464     Z_APDU apdu;
 465     Z_Close *cls = zget_Close(a->encode);
 466
 467     /* Purge request queue */
 468     while (request_deq(&a->incoming));
 469     while (request_deq(&a->outgoing));
 470     if (a->version >= 3)
 471     {
 472         logf(LOG_LOG, "Sending Close PDU, reason=%d, message=%s",
 473             reason, message ? message : "none");
 474         apdu.which = Z_APDU_close;
 475         apdu.u.close = cls;
 476         *cls->closeReason = reason;
 477         cls->diagnosticInformation = message;
 478         process_response(a, req, &apdu);
 479         iochan_settimeout(a->client_chan, 60);
 480     }
 481     else
 482     {
 483         logf(LOG_DEBUG, "v2 client. No Close PDU");
 484         iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
 485     }
 486     a->state = ASSOC_DEAD;
 487 }
 488
 489 static void do_close(association *a, int reason, char *message)
 490 {
 491     do_close_req (a, reason, message, request_get(&a->outgoing));
 492 }
 493
 494 /*
 495  * This is where PDUs from the client are read and the further
 496  * processing is initiated. Flow of control moves down through the
 497  * various process_* functions below, until the encoded result comes back up
 498  * to the output handler in here.
 499  *
 500  *  h     : the I/O channel that has an outstanding event.
 501  *  event : the current outstanding event.
 502  */
 503 void ir_session(IOCHAN h, int event)
 504 {
 505     int res;
 506     association *assoc = (association *)iochan_getdata(h);
 507     COMSTACK conn = assoc->client_link;
 508     request *req;
 509
 510     assert(h && conn && assoc);
 511     if (event == EVENT_TIMEOUT)
 512     {
 513         if (assoc->state != ASSOC_UP)
 514         {
 515             logf(LOG_LOG, "Final timeout - closing connection.");
 516             cs_close(conn);
 517             destroy_association(assoc);
 518             iochan_destroy(h);
 519         }
 520         else
 521         {
 522             logf(LOG_LOG, "Session idle too long. Sending close.");
 523             do_close(assoc, Z_Close_lackOfActivity, 0);
 524         }
 525         return;
 526     }
 527     if (event & EVENT_INPUT || event & EVENT_WORK) /* input */
 528     {
 529         if (event & EVENT_INPUT)
 530         {
 531             logf(LOG_DEBUG, "ir_session (input)");
 532             assert(assoc && conn);
 533             /* We aren't speaking to this fellow */
 534             if (assoc->state == ASSOC_DEAD)
 535             {
 536                 logf(LOG_LOG, "Closed connection after reject");
 537                 cs_close(conn);
 538                 destroy_association(assoc);
 539                 iochan_destroy(h);
 540                 return;
 541             }
 542             if ((res = cs_get(conn, &assoc->input_buffer,
 543                 &assoc->input_buffer_len)) <= 0)
 544             {
 545                 logf(LOG_LOG, "Connection closed by client");
 546                 cs_close(conn);
 547                 destroy_association(assoc);
 548                 iochan_destroy(h);
 549                 return;
 550             }
 551             else if (res == 1) /* incomplete read - wait for more  */
 552                 return;
 553             if (cs_more(conn)) /* more stuff - call us again later, please */
 554                 iochan_setevent(h, EVENT_INPUT);
 555
 556             /* we got a complete PDU. Let's decode it */
 557             logf(LOG_DEBUG, "Got PDU, %d bytes", res);
 558             req = request_get(&assoc->incoming); /* get a new request structure */
 559             odr_reset(assoc->decode);
 560             odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
 561             if (!z_APDU(assoc->decode, &req->request, 0, 0))
 562             {
 563                 logf(LOG_LOG, "ODR error on incoming PDU: %s [near byte %d] ",
 564                     odr_errmsg(odr_geterror(assoc->decode)),
 565                     odr_offset(assoc->decode));
 566                 logf(LOG_LOG, "PDU dump:");
 567                 odr_dumpBER(log_file(), assoc->input_buffer, res);
 568                 do_close(assoc, Z_Close_protocolError, "Malformed package");
 569                 return;
 570             }
 571             req->request_mem = odr_extract_mem(assoc->decode);
 572             if (assoc->print && !z_APDU(assoc->print, &req->request, 0, 0))
 573             {
 574                 logf(LOG_WARN, "ODR print error: %s",
 575                     odr_errmsg(odr_geterror(assoc->print)));
 576                 odr_reset(assoc->print);
 577             }
 578             request_enq(&assoc->incoming, req);
 579         }
 580
 581         /* can we do something yet? */
 582         req = request_head(&assoc->incoming);
 583         if (req->state == REQUEST_IDLE)
 584         {
 585             request_deq(&assoc->incoming);
 586             if (process_request(assoc, req) < 0)
 587                 do_close_req(assoc, Z_Close_systemProblem, "Unknown error",
 588                              req);
 589         }
 590     }
 591     if (event & EVENT_OUTPUT)
 592     {
 593         request *req = request_head(&assoc->outgoing);
 594
 595         logf(LOG_DEBUG, "ir_session (output)");
 596         req->state = REQUEST_PENDING;
 597         switch (res = cs_put(conn, req->response, req->len_response))
 598         {
 599             case -1:
 600                 logf(LOG_LOG, "Connection closed by client");
 601                 cs_close(conn);
 602                 destroy_association(assoc);
 603                 iochan_destroy(h);
 604                 break;
 605             case 0: /* all sent - release the request structure */
 606                 logf(LOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
 607                 nmem_destroy(req->request_mem);
 608                 request_deq(&assoc->outgoing);
 609                 request_release(req);
 610                 if (!request_head(&assoc->outgoing))
 611                     iochan_clearflag(h, EVENT_OUTPUT);
 612                 break;
 613             /* value of 1 -- partial send -- is simply ignored */
 614         }
 615     }
 616     if (event & EVENT_EXCEPT)
 617     {
 618         logf(LOG_DEBUG, "ir_session (exception)");
 619         cs_close(conn);
 620         destroy_association(assoc);
 621         iochan_destroy(h);
 622     }
 623 }
 624
 625 /*
 626  * Initiate request processing.
 627  */
 628 static int process_request(association *assoc, request *req)
 629 {
 630     int fd = -1;
 631     Z_APDU *res;
 632     int retval;
 633
 634     assert(req && req->state == REQUEST_IDLE);
 635     switch (req->request->which)
 636     {
 637         case Z_APDU_initRequest:
 638             res = process_initRequest(assoc, req); break;
 639         case Z_APDU_searchRequest:
 640             res = process_searchRequest(assoc, req, &fd); break;
 641         case Z_APDU_presentRequest:
 642             res = process_presentRequest(assoc, req, &fd); break;
 643         case Z_APDU_scanRequest:
 644             res = process_scanRequest(assoc, req, &fd); break;
 645         case Z_APDU_extendedServicesRequest:
 646             if (assoc->bend_esrequest)
 647                 res = process_ESRequest(assoc, req, &fd);
 648             else
 649             {
 650                 logf(LOG_WARN, "Cannot handle EXTENDED SERVICES APDU");
 651                 return -1;
 652             }
 653             break;
 654         case Z_APDU_sortRequest:
 655             if (assoc->bend_sort)
 656                 res = process_sortRequest(assoc, req, &fd);
 657             else
 658             {
 659                 logf(LOG_WARN, "Cannot handle SORT APDU");
 660                 return -1;
 661             }
 662             break;
 663         case Z_APDU_close:
 664             process_close(assoc, req); return 0;
 665         case Z_APDU_deleteResultSetRequest:
 666             if (assoc->bend_delete)
 667                 res = process_deleteRequest(assoc, req, &fd);
 668             else
 669             {
 670                 logf (LOG_WARN, "Cannot handle Delete APDU");
 671                 return -1;
 672             }
 673             break;
 674         default:
 675             logf(LOG_WARN, "Bad APDU received");
 676             return -1;
 677     }
 678     if (res)
 679     {
 680         logf(LOG_DEBUG, "  result immediately available");
 681         retval = process_response(assoc, req, res);
 682     }
 683     else if (fd < 0)
 684     {
 685         logf(LOG_DEBUG, "  result unavailble");
 686         retval = 0;
 687     }
 688     else /* no result yet - one will be provided later */
 689     {
 690         IOCHAN chan;
 691
 692         /* Set up an I/O handler for the fd supplied by the backend */
 693
 694         logf(LOG_DEBUG, "   establishing handler for result");
 695         req->state = REQUEST_PENDING;
 696         if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT)))
 697             abort();
 698         iochan_setdata(chan, assoc);
 699         retval = 0;
 700     }
 701     return retval;
 702 }
 703
 704 /*
 705  * Handle message from the backend.
 706  */
 707 void backend_response(IOCHAN i, int event)
 708 {
 709     association *assoc = (association *)iochan_getdata(i);
 710     request *req = request_head(&assoc->incoming);
 711     Z_APDU *res;
 712     int fd;
 713
 714     logf(LOG_DEBUG, "backend_response");
 715     assert(assoc && req && req->state != REQUEST_IDLE);
 716     /* determine what it is we're waiting for */
 717     switch (req->request->which)
 718     {
 719         case Z_APDU_searchRequest:
 720             res = response_searchRequest(assoc, req, 0, &fd); break;
 721 #if 0
 722         case Z_APDU_presentRequest:
 723             res = response_presentRequest(assoc, req, 0, &fd); break;
 724         case Z_APDU_scanRequest:
 725             res = response_scanRequest(assoc, req, 0, &fd); break;
 726 #endif
 727         default:
 728             logf(LOG_WARN, "Serious programmer's lapse or bug");
 729             abort();
 730     }
 731     if ((res && process_response(assoc, req, res) < 0) || fd < 0)
 732     {
 733         logf(LOG_LOG, "Fatal error when talking to backend");
 734         do_close(assoc, Z_Close_systemProblem, 0);
 735         iochan_destroy(i);
 736         return;
 737     }
 738     else if (!res) /* no result yet - try again later */
 739     {
 740         logf(LOG_DEBUG, "   no result yet");
 741         iochan_setfd(i, fd); /* in case fd has changed */
 742     }
 743 }
 744
 745 /*
 746  * Encode response, and transfer the request structure to the outgoing queue.
 747  */
 748 static int process_response(association *assoc, request *req, Z_APDU *res)
 749 {
 750     odr_setbuf(assoc->encode, req->response, req->size_response, 1);
 751     if (!z_APDU(assoc->encode, &res, 0, 0))
 752     {
 753         logf(LOG_WARN, "ODR error when encoding response: %s",
 754             odr_errmsg(odr_geterror(assoc->decode)));
 755         odr_reset(assoc->encode);
 756         return -1;
 757     }
 758     req->response = odr_getbuf(assoc->encode, &req->len_response,
 759         &req->size_response);
 760     odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
 761     if (assoc->print && !z_APDU(assoc->print, &res, 0, 0))
 762     {
 763         logf(LOG_WARN, "ODR print error: %s",
 764             odr_errmsg(odr_geterror(assoc->print)));
 765         odr_reset(assoc->print);
 766     }
 767     odr_reset(assoc->encode);
 768     req->state = REQUEST_IDLE;
 769     request_enq(&assoc->outgoing, req);
 770     /* turn the work over to the ir_session handler */
 771     iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
 772     /* Is there more work to be done? give that to the input handler too */
 773 #if 1
 774     if (request_head(&assoc->incoming))
 775     {
 776         logf (LOG_DEBUG, "more work to be done");
 777         iochan_setevent(assoc->client_chan, EVENT_WORK);
 778     }
 779 #endif
 780     return 0;
 781 }
 782
 783 /*
 784  * Handle init request.
 785  * At the moment, we don't check the options
 786  * anywhere else in the code - we just try not to do anything that would
 787  * break a naive client. We'll toss 'em into the association block when
 788  * we need them there.
 789  */
 790 static Z_APDU *process_initRequest(association *assoc, request *reqb)
 791 {
 792     Z_InitRequest *req = reqb->request->u.initRequest;
 793     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
 794     Z_InitResponse *resp = apdu->u.initResponse;
 795     bend_initrequest binitreq;
 796     bend_initresult *binitres;
 797     char options[100];
 798
 799     logf(LOG_LOG, "Got initRequest");
 800     if (req->implementationId)
 801         logf(LOG_LOG, "Id:        %s", req->implementationId);
 802     if (req->implementationName)
 803         logf(LOG_LOG, "Name:      %s", req->implementationName);
 804     if (req->implementationVersion)
 805         logf(LOG_LOG, "Version:   %s", req->implementationVersion);
 806
 807     binitreq.stream = assoc->encode;
 808     binitreq.configname = "default-config";
 809     binitreq.auth = req->idAuthentication;
 810     binitreq.referenceId = req->referenceId;
 811     binitreq.implementation_version = 0;
 812     binitreq.implementation_name = 0;
 813     binitreq.bend_sort = NULL;
 814     binitreq.bend_search = NULL;
 815     binitreq.bend_present = NULL;
 816     binitreq.bend_esrequest = NULL;
 817     binitreq.bend_delete = NULL;
 818     if (!(binitres = bend_init(&binitreq)))
 819     {
 820         logf(LOG_WARN, "Bad response from backend.");
 821         return 0;
 822     }
 823
 824     assoc->backend = binitres->handle;
 825     if ((assoc->bend_sort = (int (*)())binitreq.bend_sort))
 826         logf (LOG_DEBUG, "Sort handler installed");
 827     if ((assoc->bend_search = (int (*)())binitreq.bend_search))
 828         logf (LOG_DEBUG, "Search handler installed");
 829     if ((assoc->bend_present = (int (*)())binitreq.bend_present))
 830         logf (LOG_DEBUG, "Present handler installed");
 831     if ((assoc->bend_esrequest = (int (*)())binitreq.bend_esrequest))
 832         logf (LOG_DEBUG, "ESRequest handler installed");
 833     if ((assoc->bend_delete = (int (*)())binitreq.bend_delete))
 834         logf (LOG_DEBUG, "Delete handler installed");
 835
 836     resp->referenceId = req->referenceId;
 837     *options = '\0';
 838     /* let's tell the client what we can do */
 839     if (ODR_MASK_GET(req->options, Z_Options_search))
 840     {
 841         ODR_MASK_SET(resp->options, Z_Options_search);
 842         strcat(options, "srch");
 843     }
 844     if (ODR_MASK_GET(req->options, Z_Options_present))
 845     {
 846         ODR_MASK_SET(resp->options, Z_Options_present);
 847         strcat(options, " prst");
 848     }
 849     if (ODR_MASK_GET(req->options, Z_Options_delSet) && binitreq.bend_delete)
 850     {
 851         ODR_MASK_SET(resp->options, Z_Options_delSet);
 852         strcat(options, " del");
 853     }
 854     if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
 855         binitreq.bend_esrequest)
 856     {
 857         ODR_MASK_SET(resp->options, Z_Options_extendedServices);
 858         strcat (options, " extendedServices");
 859     }
 860     if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
 861     {
 862         ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
 863         strcat(options, " namedresults");
 864     }
 865     if (ODR_MASK_GET(req->options, Z_Options_scan))
 866     {
 867         ODR_MASK_SET(resp->options, Z_Options_scan);
 868         strcat(options, " scan");
 869     }
 870     if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
 871     {
 872         ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
 873         strcat(options, " concurop");
 874     }
 875     if (ODR_MASK_GET(req->options, Z_Options_sort) && binitreq.bend_sort)
 876     {
 877         ODR_MASK_SET(resp->options, Z_Options_sort);
 878         strcat(options, " sort");
 879     }
 880     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
 881     {
 882         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
 883         assoc->version = 2; /* 1 & 2 are equivalent */
 884     }
 885     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
 886     {
 887         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
 888         assoc->version = 2;
 889     }
 890     if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
 891     {
 892         ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
 893         assoc->version = 3;
 894     }
 895     logf(LOG_LOG, "Negotiated to v%d: %s", assoc->version, options);
 896     assoc->maximumRecordSize = *req->maximumRecordSize;
 897     if (assoc->maximumRecordSize > control_block->maxrecordsize)
 898         assoc->maximumRecordSize = control_block->maxrecordsize;
 899     assoc->preferredMessageSize = *req->preferredMessageSize;
 900     if (assoc->preferredMessageSize > assoc->maximumRecordSize)
 901         assoc->preferredMessageSize = assoc->maximumRecordSize;
 902     resp->preferredMessageSize = &assoc->preferredMessageSize;
 903     resp->maximumRecordSize = &assoc->maximumRecordSize;
 904
 905     resp->implementationName = "Index Data/YAZ Generic Frontend Server";
 906
 907     if (binitreq.implementation_name)
 908     {
 909         char *nv = (char *)
 910             odr_malloc (assoc->encode,
 911                         strlen(binitreq.implementation_name) + 3 +
 912                                strlen(resp->implementationName));
 913         sprintf (nv, "%s %s",
 914                  resp->implementationName, binitreq.implementation_name);
 915         resp->implementationName = nv;
 916     }
 917     if (binitreq.implementation_version)
 918     {
 919         char *nv = (char *)
 920             odr_malloc (assoc->encode,
 921                         strlen(binitreq.implementation_version) + 3 +
 922                                strlen(resp->implementationVersion));
 923         sprintf (nv, "%s %s",
 924                  resp->implementationVersion, binitreq.implementation_version);
 925         resp->implementationVersion = nv;
 926     }
 927
 928     if (binitres->errcode)
 929     {
 930         logf(LOG_LOG, "Connection rejected by backend.");
 931         *resp->result = 0;
 932         assoc->state = ASSOC_DEAD;
 933     }
 934     else
 935         assoc->state = ASSOC_UP;
 936     return apdu;
 937 }
 938
 939 /*
 940  * These functions should be merged.
 941  */
 942
 943 static void set_addinfo (Z_DefaultDiagFormat *dr, char *addinfo)
 944 {
 945 #if ASN_COMPILED
 946     dr->which = Z_DefaultDiagFormat_v2Addinfo;
 947     dr->u.v2Addinfo = addinfo ? addinfo : "";
 948 #else
 949     dr->which = Z_DiagForm_v2AddInfo;
 950     dr->addinfo = addinfo ? addinfo : "";
 951 #endif
 952 }
 953
 954 /*
 955  * nonsurrogate diagnostic record.
 956  */
 957 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
 958 {
 959     int oid[OID_SIZE];
 960     Z_Records *rec = (Z_Records *)
 961         odr_malloc (assoc->encode, sizeof(*rec));
 962     oident bib1;
 963     int *err = (int *)
 964         odr_malloc (assoc->encode, sizeof(*err));
 965     Z_DiagRec *drec = (Z_DiagRec *)
 966         odr_malloc (assoc->encode, sizeof(*drec));
 967     Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
 968         odr_malloc (assoc->encode, sizeof(*dr));
 969
 970     bib1.proto = assoc->proto;
 971     bib1.oclass = CLASS_DIAGSET;
 972     bib1.value = VAL_BIB1;
 973
 974     logf(LOG_DEBUG, "Diagnostic: %d -- %s", error, addinfo ? addinfo :
 975         "NULL");
 976     *err = error;
 977     rec->which = Z_Records_NSD;
 978 #if ASN_COMPILED
 979     rec->u.nonSurrogateDiagnostic = dr;
 980 #else
 981     rec->u.nonSurrogateDiagnostic = drec;
 982     drec->which = Z_DiagRec_defaultFormat;
 983     drec->u.defaultFormat = dr;
 984 #endif
 985     dr->diagnosticSetId =
 986         odr_oiddup (assoc->encode, oid_ent_to_oid(&bib1, oid));
 987     dr->condition = err;
 988     set_addinfo (dr, addinfo);
 989     return rec;
 990 }
 991
 992 /*
 993  * surrogate diagnostic.
 994  */
 995 static Z_NamePlusRecord *surrogatediagrec(association *assoc, char *dbname,
 996                                           int error, char *addinfo)
 997 {
 998     int oid[OID_SIZE];
 999     Z_NamePlusRecord *rec = (Z_NamePlusRecord *)
1000         odr_malloc (assoc->encode, sizeof(*rec));
1001     int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
1002     oident bib1;
1003     Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
1004     Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1005         odr_malloc (assoc->encode, sizeof(*dr));
1006
1007     bib1.proto = assoc->proto;
1008     bib1.oclass = CLASS_DIAGSET;
1009     bib1.value = VAL_BIB1;
1010
1011     logf(LOG_DEBUG, "SurrogateDiagnotic: %d -- %s", error, addinfo);
1012     *err = error;
1013     rec->databaseName = dbname;
1014     rec->which = Z_NamePlusRecord_surrogateDiagnostic;
1015     rec->u.surrogateDiagnostic = drec;
1016     drec->which = Z_DiagRec_defaultFormat;
1017     drec->u.defaultFormat = dr;
1018     dr->diagnosticSetId = odr_oiddup (assoc->encode,
1019                                       oid_ent_to_oid(&bib1, oid));
1020     dr->condition = err;
1021     set_addinfo (dr, addinfo);
1022
1023     return rec;
1024 }
1025
1026 /*
1027  * multiple nonsurrogate diagnostics.
1028  */
1029 static Z_DiagRecs *diagrecs(association *assoc, int error, char *addinfo)
1030 {
1031     int oid[OID_SIZE];
1032     Z_DiagRecs *recs = (Z_DiagRecs *)odr_malloc (assoc->encode, sizeof(*recs));
1033     int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
1034     oident bib1;
1035     Z_DiagRec **recp = (Z_DiagRec **)odr_malloc (assoc->encode, sizeof(*recp));
1036     Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
1037     Z_DefaultDiagFormat *rec = (Z_DefaultDiagFormat *)odr_malloc (assoc->encode, sizeof(*rec));
1038
1039     logf(LOG_DEBUG, "DiagRecs: %d -- %s", error, addinfo ? addinfo : "");
1040     bib1.proto = assoc->proto;
1041     bib1.oclass = CLASS_DIAGSET;
1042     bib1.value = VAL_BIB1;
1043
1044     *err = error;
1045     recs->num_diagRecs = 1;
1046     recs->diagRecs = recp;
1047     recp[0] = drec;
1048     drec->which = Z_DiagRec_defaultFormat;
1049     drec->u.defaultFormat = rec;
1050
1051     rec->diagnosticSetId = odr_oiddup (assoc->encode,
1052                                       oid_ent_to_oid(&bib1, oid));
1053     rec->condition = err;
1054
1055 #ifdef ASN_COMPILED
1056     rec->which = Z_DefaultDiagFormat_v2Addinfo;
1057     rec->u.v2Addinfo = addinfo ? addinfo : "";
1058 #else
1059     rec->which = Z_DiagForm_v2AddInfo;
1060     rec->addinfo = addinfo ? addinfo : "";
1061 #endif
1062     return recs;
1063 }
1064
1065 static Z_Records *pack_records(association *a, char *setname, int start,
1066                                 int *num, Z_RecordComposition *comp,
1067                                 int *next, int *pres, oid_value format,
1068                                 Z_ReferenceId *referenceId)
1069 {
1070     int recno, total_length = 0, toget = *num, dumped_records = 0;
1071     Z_Records *records =
1072         (Z_Records *) odr_malloc (a->encode, sizeof(*records));
1073     Z_NamePlusRecordList *reclist =
1074         (Z_NamePlusRecordList *) odr_malloc (a->encode, sizeof(*reclist));
1075     Z_NamePlusRecord **list =
1076         (Z_NamePlusRecord **) odr_malloc (a->encode, sizeof(*list) * toget);
1077
1078     records->which = Z_Records_DBOSD;
1079     records->u.databaseOrSurDiagnostics = reclist;
1080     reclist->num_records = 0;
1081     reclist->records = list;
1082     *pres = Z_PRES_SUCCESS;
1083     *num = 0;
1084     *next = 0;
1085
1086     logf(LOG_LOG, "Request to pack %d+%d", start, toget);
1087     logf(LOG_DEBUG, "pms=%d, mrs=%d", a->preferredMessageSize,
1088         a->maximumRecordSize);
1089     for (recno = start; reclist->num_records < toget; recno++)
1090     {
1091         bend_fetchrequest freq;
1092         bend_fetchresult *fres;
1093         Z_NamePlusRecord *thisrec;
1094         int this_length = 0;
1095         /*
1096          * we get the number of bytes allocated on the stream before any
1097          * allocation done by the backend - this should give us a reasonable
1098          * idea of the total size of the data so far.
1099          */
1100         total_length = odr_total(a->encode) - dumped_records;
1101         freq.setname = setname;
1102         freq.number = recno;
1103         freq.comp = comp;
1104         freq.format = format;
1105         freq.stream = a->encode;
1106         freq.surrogate_flag = 0;
1107         freq.referenceId = referenceId;
1108         if (!(fres = bend_fetch(a->backend, &freq, 0)))
1109         {
1110             *pres = Z_PRES_FAILURE;
1111             return diagrec(a, 2, "Backend interface problem");
1112         }
1113         /* backend should be able to signal whether error is system-wide
1114            or only pertaining to current record */
1115         if (fres->errcode)
1116         {
1117             if (!freq.surrogate_flag)
1118             {
1119                 *pres = Z_PRES_FAILURE;
1120                 return diagrec(a, fres->errcode, fres->errstring);
1121             }
1122             reclist->records[reclist->num_records] =
1123                 surrogatediagrec(a, fres->basename, fres->errcode,
1124                                  fres->errstring);
1125             reclist->num_records++;
1126             *next = fres->last_in_set ? 0 : recno + 1;
1127             continue;
1128         }
1129         if (fres->len >= 0)
1130             this_length = fres->len;
1131         else
1132             this_length = odr_total(a->encode) - total_length;
1133         logf(LOG_DEBUG, "  fetched record, len=%d, total=%d",
1134             this_length, total_length);
1135         if (this_length + total_length > a->preferredMessageSize)
1136         {
1137             /* record is small enough, really */
1138             if (this_length <= a->preferredMessageSize)
1139             {
1140                 logf(LOG_DEBUG, "  Dropped last normal-sized record");
1141                 *pres = Z_PRES_PARTIAL_2;
1142                 break;
1143             }
1144             /* record can only be fetched by itself */
1145             if (this_length < a->maximumRecordSize)
1146             {
1147                 logf(LOG_DEBUG, "  Record > prefmsgsz");
1148                 if (toget > 1)
1149                 {
1150                     logf(LOG_DEBUG, "  Dropped it");
1151                     reclist->records[reclist->num_records] =
1152                          surrogatediagrec(a, fres->basename, 16, 0);
1153                     reclist->num_records++;
1154                     *next = fres->last_in_set ? 0 : recno + 1;
1155                     dumped_records += this_length;
1156                     continue;
1157                 }
1158             }
1159             else /* too big entirely */
1160             {
1161                 logf(LOG_DEBUG, "Record > maxrcdsz");
1162                 reclist->records[reclist->num_records] =
1163                     surrogatediagrec(a, fres->basename, 17, 0);
1164                 reclist->num_records++;
1165                 *next = fres->last_in_set ? 0 : recno + 1;
1166                 dumped_records += this_length;
1167                 continue;
1168             }
1169         }
1170
1171         if (!(thisrec = (Z_NamePlusRecord *)
1172               odr_malloc(a->encode, sizeof(*thisrec))))
1173             return 0;
1174         if (!(thisrec->databaseName = (char *)odr_malloc(a->encode,
1175             strlen(fres->basename) + 1)))
1176             return 0;
1177         strcpy(thisrec->databaseName, fres->basename);
1178         thisrec->which = Z_NamePlusRecord_databaseRecord;
1179         thisrec->u.databaseRecord = z_ext_record(a->encode, fres->format,
1180                                                  fres->record, fres->len);
1181         if (!thisrec->u.databaseRecord)
1182             return 0;
1183         reclist->records[reclist->num_records] = thisrec;
1184         reclist->num_records++;
1185         *next = fres->last_in_set ? 0 : recno + 1;
1186     }
1187     *num = reclist->num_records;
1188     return records;
1189 }
1190
1191 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
1192     int *fd)
1193 {
1194     Z_SearchRequest *req = reqb->request->u.searchRequest;
1195     bend_search_rr *bsrr =
1196         (bend_search_rr *)nmem_malloc (reqb->request_mem, sizeof(*bsrr));
1197
1198     logf(LOG_LOG, "Got SearchRequest.");
1199     bsrr->fd = fd;
1200     bsrr->request = reqb;
1201     bsrr->association = assoc;
1202     bsrr->referenceId = req->referenceId;
1203     save_referenceId (reqb, bsrr->referenceId);
1204
1205     logf (LOG_LOG, "ResultSet '%s'", req->resultSetName);
1206     if (req->databaseNames)
1207     {
1208         int i;
1209         for (i = 0; i < req->num_databaseNames; i++)
1210             logf (LOG_LOG, "Database '%s'", req->databaseNames[i]);
1211     }
1212     switch (req->query->which)
1213     {
1214     case Z_Query_type_1: case Z_Query_type_101:
1215         log_rpn_query (req->query->u.type_1);
1216     }
1217     if (assoc->bend_search)
1218     {
1219         bsrr->setname = req->resultSetName;
1220         bsrr->replace_set = *req->replaceIndicator;
1221         bsrr->num_bases = req->num_databaseNames;
1222         bsrr->basenames = req->databaseNames;
1223         bsrr->query = req->query;
1224         bsrr->stream = assoc->encode;
1225         bsrr->decode = assoc->decode;
1226         bsrr->errcode = 0;
1227         bsrr->hits = 0;
1228         bsrr->errstring = NULL;
1229         ((int (*)(void *, bend_search_rr *))(assoc->bend_search))
1230             (assoc->backend, bsrr);
1231         if (!bsrr->request)
1232             return 0;
1233     }
1234     else
1235     {
1236         bend_searchrequest bsrq;
1237         bend_searchresult *bsrt;
1238
1239         bsrq.setname = req->resultSetName;
1240         bsrq.replace_set = *req->replaceIndicator;
1241         bsrq.num_bases = req->num_databaseNames;
1242         bsrq.basenames = req->databaseNames;
1243         bsrq.query = req->query;
1244         bsrq.referenceId = req->referenceId;
1245         bsrq.stream = assoc->encode;
1246         bsrq.decode = assoc->decode;
1247         if (!(bsrt = bend_search (assoc->backend, &bsrq, fd)))
1248             return 0;
1249         bsrr->hits = bsrt->hits;
1250         bsrr->errcode = bsrt->errcode;
1251         bsrr->errstring = bsrt->errstring;
1252     }
1253     return response_searchRequest(assoc, reqb, bsrr, fd);
1254 }
1255
1256 int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
1257
1258 /*
1259  * Prepare a searchresponse based on the backend results. We probably want
1260  * to look at making the fetching of records nonblocking as well, but
1261  * so far, we'll keep things simple.
1262  * If bsrt is null, that means we're called in response to a communications
1263  * event, and we'll have to get the response for ourselves.
1264  */
1265 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
1266     bend_search_rr *bsrt, int *fd)
1267 {
1268     Z_SearchRequest *req = reqb->request->u.searchRequest;
1269     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1270     Z_SearchResponse *resp = (Z_SearchResponse *)
1271         odr_malloc (assoc->encode, sizeof(*resp));
1272     int *nulint = (int *)odr_malloc (assoc->encode, sizeof(*nulint));
1273     bool_t *sr = (bool_t *)odr_malloc (assoc->encode, sizeof(*sr));
1274     int *next = (int *)odr_malloc (assoc->encode, sizeof(*next));
1275     int *none = (int *)odr_malloc (assoc->encode, sizeof(*none));
1276
1277     *nulint = 0;
1278     *sr = 1;
1279     *next = 0;
1280     *none = Z_RES_NONE;
1281
1282     apdu->which = Z_APDU_searchResponse;
1283     apdu->u.searchResponse = resp;
1284     resp->referenceId = req->referenceId;
1285     resp->additionalSearchInfo = 0;
1286     resp->otherInfo = 0;
1287     *fd = -1;
1288     if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
1289     {
1290         logf(LOG_FATAL, "Bad result from backend");
1291         return 0;
1292     }
1293     else if (bsrt->errcode)
1294     {
1295         resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
1296         resp->resultCount = nulint;
1297         resp->numberOfRecordsReturned = nulint;
1298         resp->nextResultSetPosition = nulint;
1299         resp->searchStatus = nulint;
1300         resp->resultSetStatus = none;
1301         resp->presentStatus = 0;
1302     }
1303     else
1304     {
1305         int *toget = (int *)odr_malloc (assoc->encode, sizeof(*toget));
1306         int *presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
1307         Z_RecordComposition comp, *compp = 0;
1308
1309         *toget = 0;
1310         *presst = 0;
1311         resp->records = 0;
1312         resp->resultCount = &bsrt->hits;
1313
1314         comp.which = Z_RecordComp_simple;
1315         /* how many records does the user agent want, then? */
1316         if (bsrt->hits <= *req->smallSetUpperBound)
1317         {
1318             *toget = bsrt->hits;
1319             if ((comp.u.simple = req->smallSetElementSetNames))
1320                 compp = &comp;
1321         }
1322         else if (bsrt->hits < *req->largeSetLowerBound)
1323         {
1324             *toget = *req->mediumSetPresentNumber;
1325             if (*toget > bsrt->hits)
1326                 *toget = bsrt->hits;
1327             if ((comp.u.simple = req->mediumSetElementSetNames))
1328                 compp = &comp;
1329         }
1330         else
1331             *toget = 0;
1332
1333         if (*toget && !resp->records)
1334         {
1335             oident *prefformat;
1336             oid_value form;
1337
1338             if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
1339                 prefformat->oclass != CLASS_RECSYN)
1340                 form = VAL_NONE;
1341             else
1342                 form = prefformat->value;
1343             resp->records = pack_records(assoc, req->resultSetName, 1,
1344                 toget, compp, next, presst, form, req->referenceId);
1345             if (!resp->records)
1346                 return 0;
1347             resp->numberOfRecordsReturned = toget;
1348             resp->nextResultSetPosition = next;
1349             resp->searchStatus = sr;
1350             resp->resultSetStatus = 0;
1351             resp->presentStatus = presst;
1352         }
1353         else
1354         {
1355             if (*resp->resultCount)
1356                 *next = 1;
1357             resp->numberOfRecordsReturned = nulint;
1358             resp->nextResultSetPosition = next;
1359             resp->searchStatus = sr;
1360             resp->resultSetStatus = 0;
1361             resp->presentStatus = 0;
1362         }
1363     }
1364     return apdu;
1365 }
1366
1367 /*
1368  * Maybe we got a little over-friendly when we designed bend_fetch to
1369  * get only one record at a time. Some backends can optimise multiple-record
1370  * fetches, and at any rate, there is some overhead involved in
1371  * all that selecting and hopping around. Problem is, of course, that the
1372  * frontend can't know ahead of time how many records it'll need to
1373  * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
1374  * is downright lousy as a bulk data transfer protocol.
1375  *
1376  * To start with, we'll do the fetching of records from the backend
1377  * in one operation: To save some trips in and out of the event-handler,
1378  * and to simplify the interface to pack_records. At any rate, asynch
1379  * operation is more fun in operations that have an unpredictable execution
1380  * speed - which is normally more true for search than for present.
1381  */
1382 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
1383     int *fd)
1384 {
1385     Z_PresentRequest *req = reqb->request->u.presentRequest;
1386     oident *prefformat;
1387     oid_value form;
1388     Z_APDU *apdu;
1389     Z_PresentResponse *resp;
1390     int *presst;
1391     int *next;
1392     int *num;
1393
1394     logf(LOG_LOG, "Got PresentRequest.");
1395
1396     if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
1397         prefformat->oclass != CLASS_RECSYN)
1398         form = VAL_NONE;
1399     else
1400         form = prefformat->value;
1401     if (assoc->bend_present)
1402     {
1403         bend_present_rr *bprr = (bend_present_rr *)
1404             nmem_malloc (reqb->request_mem, sizeof(*bprr));
1405         bprr->setname = req->resultSetId;
1406         bprr->start = *req->resultSetStartPoint;
1407         bprr->number = *req->numberOfRecordsRequested;
1408         bprr->format = form;
1409         bprr->comp = req->recordComposition;
1410         bprr->referenceId = req->referenceId;
1411         bprr->stream = assoc->encode;
1412         bprr->request = reqb;
1413         bprr->association = assoc;
1414         bprr->errcode = 0;
1415         bprr->errstring = NULL;
1416         ((int (*)(void *, bend_present_rr *))(*assoc->bend_present))(
1417             assoc->backend, bprr);
1418
1419         if (!bprr->request)
1420             return 0;
1421     }
1422     apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1423     resp = (Z_PresentResponse *)odr_malloc (assoc->encode, sizeof(*resp));
1424     presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
1425     next = (int *)odr_malloc (assoc->encode, sizeof(*next));
1426     num = (int *)odr_malloc (assoc->encode, sizeof(*num));
1427     *presst = 0;
1428     *next = 0;
1429     *num = *req->numberOfRecordsRequested;
1430
1431     apdu->which = Z_APDU_presentResponse;
1432     apdu->u.presentResponse = resp;
1433     resp->referenceId = req->referenceId;
1434     resp->otherInfo = 0;
1435
1436     resp->records =
1437         pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
1438                      num, req->recordComposition, next, presst, form,
1439                      req->referenceId);
1440     if (!resp->records)
1441         return 0;
1442     resp->numberOfRecordsReturned = num;
1443     resp->presentStatus = presst;
1444     resp->nextResultSetPosition = next;
1445
1446     return apdu;
1447 }
1448
1449 /*
1450  * Scan was implemented rather in a hurry, and with support for only the basic
1451  * elements of the service in the backend API. Suggestions are welcome.
1452  */
1453 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
1454 {
1455     Z_ScanRequest *req = reqb->request->u.scanRequest;
1456     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1457     Z_ScanResponse *res = (Z_ScanResponse *)
1458         odr_malloc (assoc->encode, sizeof(*res));
1459     int *scanStatus = (int *)
1460         odr_malloc (assoc->encode, sizeof(*scanStatus));
1461     int *numberOfEntriesReturned = (int *)
1462         odr_malloc (assoc->encode, sizeof(*numberOfEntriesReturned));
1463     Z_ListEntries *ents = (Z_ListEntries *)
1464         odr_malloc (assoc->encode, sizeof(*ents));
1465     Z_DiagRecs *diagrecs_p = NULL;
1466     oident *attent;
1467     bend_scanrequest srq;
1468     bend_scanresult *srs;
1469     oident *attset;
1470
1471     logf(LOG_LOG, "Got ScanRequest");
1472     *scanStatus = Z_Scan_failure;
1473     *numberOfEntriesReturned = 0;
1474
1475     apdu->which = Z_APDU_scanResponse;
1476     apdu->u.scanResponse = res;
1477     res->referenceId = req->referenceId;
1478     res->stepSize = 0;
1479     res->scanStatus = scanStatus;
1480     res->numberOfEntriesReturned = numberOfEntriesReturned;
1481     res->positionOfTerm = 0;
1482     res->entries = ents;
1483     ents->num_entries = 0;
1484     ents->entries = NULL;
1485     ents->num_nonsurrogateDiagnostics = 0;
1486     ents->nonsurrogateDiagnostics = NULL;
1487     res->attributeSet = 0;
1488     res->otherInfo = 0;
1489
1490     if (req->attributeSet && (!(attent = oid_getentbyoid(req->attributeSet)) ||
1491                               attent->oclass != CLASS_ATTSET
1492                               || attent->value != VAL_BIB1))
1493         diagrecs_p = diagrecs(assoc, 121, 0);
1494     else if (req->stepSize && *req->stepSize > 0)
1495         diagrecs_p = diagrecs(assoc, 205, 0);
1496     else
1497     {
1498         if (req->databaseNames)
1499         {
1500             int i;
1501             for (i = 0; i < req->num_databaseNames; i++)
1502                 logf (LOG_LOG, "Database '%s'", req->databaseNames[i]);
1503         }
1504         srq.num_bases = req->num_databaseNames;
1505         srq.basenames = req->databaseNames;
1506         srq.num_entries = *req->numberOfTermsRequested;
1507         srq.term = req->termListAndStartPoint;
1508         srq.referenceId = req->referenceId;
1509         srq.stream = assoc->encode;
1510         if (!(attset = oid_getentbyoid(req->attributeSet)) ||
1511             attset->oclass != CLASS_RECSYN)
1512             srq.attributeset = VAL_NONE;
1513         else
1514             srq.attributeset = attset->value;
1515         log_scan_term (req->termListAndStartPoint, attset->value);
1516         srq.term_position = req->preferredPositionInResponse ?
1517             *req->preferredPositionInResponse : 1;
1518         if (!(srs = bend_scan(assoc->backend, &srq, 0)))
1519             diagrecs_p = diagrecs(assoc, 2, 0);
1520         else if (srs->errcode)
1521             diagrecs_p = diagrecs(assoc, srs->errcode, srs->errstring);
1522         else
1523         {
1524             int i;
1525             Z_Entry **tab = (Z_Entry **)
1526                 odr_malloc (assoc->encode, sizeof(*tab) * srs->num_entries);
1527
1528             if (srs->status == BEND_SCAN_PARTIAL)
1529                 *scanStatus = Z_Scan_partial_5;
1530             else
1531                 *scanStatus = Z_Scan_success;
1532             ents->entries = tab;
1533             ents->num_entries = srs->num_entries;
1534             res->numberOfEntriesReturned = &ents->num_entries;
1535             res->positionOfTerm = &srs->term_position;
1536             for (i = 0; i < srs->num_entries; i++)
1537             {
1538                 Z_Entry *e;
1539                 Z_TermInfo *t;
1540                 Odr_oct *o;
1541
1542                 tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
1543                 if (srs->entries[i].occurrences >= 0)
1544                 {
1545                     e->which = Z_Entry_termInfo;
1546                     e->u.termInfo = t = (Z_TermInfo *)
1547                         odr_malloc(assoc->encode, sizeof(*t));
1548                     t->suggestedAttributes = 0;
1549                     t->displayTerm = 0;
1550                     t->alternativeTerm = 0;
1551                     t->byAttributes = 0;
1552                     t->otherTermInfo = 0;
1553                     t->globalOccurrences = &srs->entries[i].occurrences;
1554                     t->term = (Z_Term *)
1555                         odr_malloc(assoc->encode, sizeof(*t->term));
1556                     t->term->which = Z_Term_general;
1557                     t->term->u.general = o =
1558                         (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
1559                     o->buf = (unsigned char *)
1560                         odr_malloc(assoc->encode, o->len = o->size =
1561                                    strlen(srs->entries[i].term));
1562                     memcpy(o->buf, srs->entries[i].term, o->len);
1563                     logf(LOG_DEBUG, "  term #%d: '%s' (%d)", i,
1564                          srs->entries[i].term, srs->entries[i].occurrences);
1565                 }
1566                 else
1567                 {
1568                     Z_DiagRecs *drecs = diagrecs (assoc,
1569                                                   srs->entries[i].errcode,
1570                                                   srs->entries[i].errstring);
1571                     assert (drecs->num_diagRecs == 1);
1572                     e->which = Z_Entry_surrogateDiagnostic;
1573                     assert (drecs->diagRecs[0]);
1574                     e->u.surrogateDiagnostic = drecs->diagRecs[0];
1575                 }
1576             }
1577         }
1578     }
1579     if (diagrecs_p)
1580     {
1581         ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
1582         ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
1583     }
1584     return apdu;
1585 }
1586
1587 static Z_APDU *process_sortRequest(association *assoc, request *reqb,
1588     int *fd)
1589 {
1590     Z_SortRequest *req = reqb->request->u.sortRequest;
1591     Z_SortResponse *res = (Z_SortResponse *)
1592         odr_malloc (assoc->encode, sizeof(*res));
1593     bend_sort_rr *bsrr = (bend_sort_rr *)
1594         odr_malloc (assoc->encode, sizeof(*bsrr));
1595
1596     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1597
1598     logf(LOG_LOG, "Got SortRequest.");
1599
1600 #ifdef ASN_COMPILED
1601     bsrr->num_input_setnames = req->num_inputResultSetNames;
1602     bsrr->input_setnames = req->inputResultSetNames;
1603 #else
1604     bsrr->num_input_setnames = req->inputResultSetNames->num_strings;
1605     bsrr->input_setnames = req->inputResultSetNames->strings;
1606 #endif
1607     bsrr->referenceId = req->referenceId;
1608     bsrr->output_setname = req->sortedResultSetName;
1609     bsrr->sort_sequence = req->sortSequence;
1610     bsrr->stream = assoc->encode;
1611
1612     bsrr->sort_status = Z_SortStatus_failure;
1613     bsrr->errcode = 0;
1614     bsrr->errstring = 0;
1615
1616     ((int (*)(void *, bend_sort_rr *))(*assoc->bend_sort))(assoc->backend,
1617                                                            bsrr);
1618
1619     res->referenceId = bsrr->referenceId;
1620     res->sortStatus = (int *)
1621         odr_malloc (assoc->encode, sizeof(*res->sortStatus));
1622     *res->sortStatus = bsrr->sort_status;
1623     res->resultSetStatus = 0;
1624     if (bsrr->errcode)
1625     {
1626         Z_DiagRecs *dr = diagrecs (assoc, bsrr->errcode, bsrr->errstring);
1627 #ifdef ASN_COMPILED
1628         res->diagnostics = dr->diagRecs;
1629         res->num_diagnostics = dr->num_diagRecs;
1630 #else
1631         res->diagnostics = dr;
1632 #endif
1633     }
1634     else
1635     {
1636 #ifdef ASN_COMPILED
1637         res->num_diagnostics = 0;
1638 #endif
1639         res->diagnostics = 0;
1640     }
1641     res->otherInfo = 0;
1642
1643     apdu->which = Z_APDU_sortResponse;
1644     apdu->u.sortResponse = res;
1645     return apdu;
1646 }
1647
1648 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
1649     int *fd)
1650 {
1651     Z_DeleteResultSetRequest *req = reqb->request->u.deleteResultSetRequest;
1652     Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
1653         odr_malloc (assoc->encode, sizeof(*res));
1654     bend_delete_rr *bdrr = (bend_delete_rr *)
1655         odr_malloc (assoc->encode, sizeof(*bdrr));
1656     Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1657
1658     logf(LOG_LOG, "Got DeleteRequest.");
1659
1660     bdrr->num_setnames = req->num_resultSetList;
1661     bdrr->setnames = req->resultSetList;
1662     bdrr->stream = assoc->encode;
1663     bdrr->function = *req->deleteFunction;
1664     bdrr->referenceId = req->referenceId;
1665
1666     ((int (*)(void *, bend_delete_rr *))
1667      (*assoc->bend_delete))(assoc->backend, bdrr);
1668
1669     res->referenceId = req->referenceId;
1670
1671     res->deleteOperationStatus = (int *)
1672         odr_malloc (assoc->encode, sizeof(*res->deleteOperationStatus));
1673     *res->deleteOperationStatus = bdrr->delete_status;
1674
1675     res->deleteListStatuses = 0;
1676     res->numberNotDeleted = 0;
1677     res->bulkStatuses = 0;
1678     res->deleteMessage = 0;
1679     res->otherInfo = 0;
1680
1681     apdu->which = Z_APDU_deleteResultSetResponse;
1682     apdu->u.deleteResultSetResponse = res;
1683     return apdu;
1684 }
1685
1686 static void process_close(association *assoc, request *reqb)
1687 {
1688     Z_Close *req = reqb->request->u.close;
1689     static char *reasons[] =
1690     {
1691         "finished",
1692         "shutdown",
1693         "systemProblem",
1694         "costLimit",
1695         "resources",
1696         "securityViolation",
1697         "protocolError",
1698         "lackOfActivity",
1699         "peerAbort",
1700         "unspecified"
1701     };
1702
1703     logf(LOG_LOG, "Got Close, reason %s, message %s",
1704         reasons[*req->closeReason], req->diagnosticInformation ?
1705         req->diagnosticInformation : "NULL");
1706     if (assoc->version < 3) /* to make do_force respond with close */
1707         assoc->version = 3;
1708     do_close_req(assoc, Z_Close_finished,
1709                  "Association terminated by client", reqb);
1710 }
1711
1712 void save_referenceId (request *reqb, Z_ReferenceId *refid)
1713 {
1714     if (refid)
1715     {
1716         reqb->len_refid = refid->len;
1717         reqb->refid = (char *)nmem_malloc (reqb->request_mem, refid->len);
1718         memcpy (reqb->refid, refid->buf, refid->len);
1719     }
1720     else
1721     {
1722         reqb->len_refid = 0;
1723         reqb->refid = NULL;
1724     }
1725 }
1726
1727 void bend_request_send (bend_association a, bend_request req, Z_APDU *res)
1728 {
1729     process_response (a, req, res);
1730 }
1731
1732 bend_request bend_request_mk (bend_association a)
1733 {
1734     request *nreq = request_get (&a->outgoing);
1735     nreq->request_mem = nmem_create ();
1736     return nreq;
1737 }
1738
1739 Z_ReferenceId *bend_request_getid (ODR odr, bend_request req)
1740 {
1741     Z_ReferenceId *id;
1742     if (!req->refid)
1743         return 0;
1744     id = (Odr_oct *)odr_malloc (odr, sizeof(*odr));
1745     id->buf = (unsigned char *)odr_malloc (odr, req->len_refid);
1746     id->len = id->size = req->len_refid;
1747     memcpy (id->buf, req->refid, req->len_refid);
1748     return id;
1749 }
1750
1751 void bend_request_destroy (bend_request *req)
1752 {
1753     nmem_destroy((*req)->request_mem);
1754     request_release(*req);
1755     *req = NULL;
1756 }
1757
1758 int bend_backend_respond (bend_association a, bend_request req)
1759 {
1760     return process_request (a, req);
1761 }
1762
1763 void bend_request_setdata(bend_request r, void *p)
1764 {
1765     r->clientData = p;
1766 }
1767
1768 void *bend_request_getdata(bend_request r)
1769 {
1770     return r->clientData;
1771 }
1772
1773 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
1774 {
1775     bend_esrequest_rr esrequest;
1776
1777     Z_ExtendedServicesRequest *req = reqb->request->u.extendedServicesRequest;
1778     Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
1779
1780     Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
1781
1782     logf(LOG_DEBUG,"inside Process esRequest");
1783
1784     esrequest.esr = reqb->request->u.extendedServicesRequest;
1785     esrequest.stream = assoc->encode;
1786     esrequest.errcode = 0;
1787     esrequest.errstring = NULL;
1788     esrequest.request = reqb;
1789     esrequest.association = assoc;
1790     esrequest.referenceId = req->referenceId;
1791
1792     ((int (*)(void *, bend_esrequest_rr *))(*assoc->bend_esrequest))
1793         (assoc->backend, &esrequest);
1794
1795     /* If the response is being delayed, return NULL */
1796     if (esrequest.request == NULL)
1797         return(NULL);
1798
1799     resp->referenceId = req->referenceId;
1800
1801     if (esrequest.errcode == -1)
1802     {
1803         /* Backend service indicates request will be processed */
1804         logf(LOG_DEBUG,"Request could be processed...Accepted !");
1805         *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
1806     }
1807     else if (esrequest.errcode == 0)
1808     {
1809         /* Backend service indicates request will be processed */
1810         logf(LOG_DEBUG,"Request could be processed...Done !");
1811         *resp->operationStatus = Z_ExtendedServicesResponse_done;
1812     }
1813     else
1814     {
1815         Z_DiagRecs *diagRecs = diagrecs (assoc, esrequest.errcode,
1816                                          esrequest.errstring);
1817
1818         /* Backend indicates error, request will not be processed */
1819         logf(LOG_DEBUG,"Request could not be processed...failure !");
1820         *resp->operationStatus = Z_ExtendedServicesResponse_failure;
1821         resp->num_diagnostics = diagRecs->num_diagRecs;
1822         resp->diagnostics = diagRecs->diagRecs;
1823     }
1824     /* Do something with the members of bend_extendedservice */
1825
1826     logf(LOG_DEBUG,"Send the result apdu");
1827     return apdu;
1828 }