2 * Copyright (c) 1995-1999, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.95 1999-10-11 10:01:24 adam
8 * Implemented bend_sort_rr handler for frontend server.
10 * Revision 1.94 1999/08/27 09:40:32 adam
11 * Renamed logf function to yaz_log. Removed VC++ project files.
13 * Revision 1.93 1999/07/06 12:17:15 adam
14 * Added option -1 that runs server once (for profiling purposes).
16 * Revision 1.92 1999/06/17 10:54:45 adam
17 * Added facility to specify implementation version - and name
20 * Revision 1.91 1999/06/01 14:29:12 adam
21 * Work on Extended Services.
23 * Revision 1.90 1999/05/27 13:02:20 adam
24 * Assigned OID for old DB Update (VAL_DBUPDATE0).
26 * Revision 1.89 1999/05/26 15:24:26 adam
27 * Fixed minor bugs regarding DB Update (introduced by previous commit).
29 * Revision 1.88 1999/04/20 09:56:48 adam
30 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
31 * Modified all encoders/decoders to reflect this change.
33 * Revision 1.87 1999/03/31 11:18:25 adam
34 * Implemented odr_strdup. Added Reference ID to backend server API.
36 * Revision 1.86 1999/02/02 13:57:38 adam
37 * Uses preprocessor define WIN32 instead of WINDOWS to build code
38 * for Microsoft WIN32.
40 * Revision 1.85 1998/11/17 09:52:59 adam
41 * Fixed minor bug (introduced by previous commit).
43 * Revision 1.84 1998/11/16 16:02:32 adam
44 * Added loggin utilies, log_rpn_query and log_scan_term. These used
45 * to be part of Zebra.
47 * Revision 1.83 1998/11/03 10:09:36 adam
48 * Fixed bug regarding YC.
50 * Revision 1.82 1998/10/20 14:00:30 quinn
53 * Revision 1.81 1998/10/13 16:12:24 adam
54 * Added support for Surrogate Diagnostics for Scan Term entries.
56 * Revision 1.80 1998/09/02 12:41:53 adam
57 * Added decode stream in bend search structures.
59 * Revision 1.79 1998/08/19 16:10:08 adam
60 * Changed som member names of DeleteResultSetRequest/Response.
62 * Revision 1.78 1998/08/03 10:23:55 adam
63 * Fixed bug regarding Options for Sort.
65 * Revision 1.77 1998/07/20 12:38:42 adam
66 * Implemented delete result set service to server API.
68 * Revision 1.76 1998/05/27 16:57:07 adam
69 * Support for surrogate diagnostic records added for bend_fetch.
71 * Revision 1.75 1998/05/18 10:13:07 adam
72 * Fixed call to es_request handler - extra argument was passed.
74 * Revision 1.74 1998/03/31 15:13:20 adam
75 * Development towards compiled ASN.1.
77 * Revision 1.73 1998/03/31 11:07:45 adam
78 * Furhter work on UNIverse resource report.
79 * Added Extended Services handling in frontend server.
81 * Revision 1.72 1998/02/11 11:53:35 adam
82 * Changed code so that it compiles as C++.
84 * Revision 1.71 1998/02/10 11:03:57 adam
85 * Added support for extended handlers in backend server interface.
87 * Revision 1.70 1998/01/29 13:15:35 adam
88 * Implemented sort for the backend interface.
90 * Revision 1.69 1997/09/30 11:48:12 adam
91 * Fixed bug introduced by previous commit.
93 * Revision 1.68 1997/09/29 13:18:59 adam
94 * Added function, oid_ent_to_oid, to replace the function
95 * oid_getoidbyent, which is not thread safe.
97 * Revision 1.67 1997/09/17 12:10:40 adam
100 * Revision 1.66 1997/09/05 15:26:44 adam
101 * Added ODR encode in search and scen bend request structures.
102 * Fixed a few enums that caused trouble with C++.
104 * Revision 1.65 1997/09/01 08:53:01 adam
105 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
106 * moved a separate directory. MSV5.0 project server.dsp created.
107 * As an option, the server can now operate as an NT service.
109 * Revision 1.64 1997/04/30 08:52:11 quinn
112 * Revision 1.63 1996/10/11 11:57:26 quinn
115 * Revision 1.62 1996/07/06 19:58:35 quinn
116 * System headerfiles gathered in yconfig
118 * Revision 1.61 1996/06/10 08:56:16 quinn
121 * Revision 1.60 1996/05/30 11:03:10 quinn
122 * Fixed NextresultSetPosition bug fixed.
124 * Revision 1.59 1996/05/14 09:26:46 quinn
125 * Added attribute set to scan backend
127 * Revision 1.58 1996/02/20 12:53:04 quinn
130 * Revision 1.57 1996/01/02 08:57:47 quinn
131 * Changed enums in the ASN.1 .h files to #defines. Changed oident.class to oclass
133 * Revision 1.56 1995/12/14 11:09:57 quinn
136 * Revision 1.55 1995/11/08 17:41:37 quinn
139 * Revision 1.54 1995/11/08 15:11:29 quinn
140 * Log of close transmit.
142 * Revision 1.53 1995/11/01 13:54:58 quinn
145 * Revision 1.52 1995/11/01 12:19:13 quinn
146 * Second attempt to fix same bug.
148 * Revision 1.50 1995/10/25 16:58:32 quinn
151 * Revision 1.49 1995/10/16 13:51:53 quinn
152 * Changes to provide Especs to the backend.
154 * Revision 1.48 1995/10/06 08:51:20 quinn
155 * Added Write-buffer.
157 * Revision 1.47 1995/08/29 14:24:16 quinn
158 * Added second half of close-handshake
160 * Revision 1.46 1995/08/29 11:17:58 quinn
161 * Added code to receive close
163 * Revision 1.45 1995/08/21 09:11:00 quinn
164 * Smallish fixes to suppport new formats.
166 * Revision 1.44 1995/08/17 12:45:25 quinn
167 * Fixed minor problems with GRS-1. Added support in c&s.
169 * Revision 1.43 1995/08/15 12:00:31 quinn
172 * Revision 1.42 1995/08/15 11:16:50 quinn
174 * Revision 1.41 1995/08/02 10:23:06 quinn
177 * Revision 1.40 1995/07/31 14:34:26 quinn
178 * Fixed bug in process_searchResponse (numberOfRecordsReturned).
180 * Revision 1.39 1995/06/27 13:21:00 quinn
183 * Revision 1.38 1995/06/19 12:39:11 quinn
184 * Fixed bug in timeout code. Added BER dumper.
186 * Revision 1.37 1995/06/16 13:16:14 quinn
187 * Fixed Defaultdiagformat.
189 * Revision 1.36 1995/06/16 10:31:36 quinn
190 * Added session timeout.
192 * Revision 1.35 1995/06/15 07:45:14 quinn
195 * Revision 1.34 1995/06/14 15:26:46 quinn
196 * *** empty log message ***
198 * Revision 1.33 1995/06/06 14:57:05 quinn
199 * Better diagnostics.
201 * Revision 1.32 1995/06/06 08:41:44 quinn
202 * Better diagnostics.
204 * Revision 1.31 1995/06/06 08:15:37 quinn
207 * Revision 1.30 1995/06/05 10:53:32 quinn
208 * Added a better SCAN.
210 * Revision 1.29 1995/06/01 11:25:03 quinn
213 * Revision 1.28 1995/06/01 11:21:01 quinn
214 * Attempting to fix a bug in pack-records. replaced break with continue
215 * for large records, according to standard.
217 * Revision 1.27 1995/05/29 08:12:06 quinn
220 * Revision 1.26 1995/05/18 13:02:12 quinn
223 * Revision 1.25 1995/05/17 08:42:26 quinn
224 * Transfer auth info to backend. Allow backend to reject init gracefully.
226 * Revision 1.24 1995/05/16 08:51:04 quinn
227 * License, documentation, and memory fixes
229 * Revision 1.23 1995/05/15 13:25:10 quinn
232 * Revision 1.22 1995/05/15 11:56:39 quinn
233 * Asynchronous facilities. Restructuring of seshigh code.
235 * Revision 1.21 1995/05/02 08:53:19 quinn
236 * Trying in vain to fix comm with ISODE
238 * Revision 1.20 1995/04/20 15:13:00 quinn
241 * Revision 1.19 1995/04/18 08:15:34 quinn
242 * Added dynamic memory allocation on encoding (whew). Code is now somewhat
243 * neater. We'll make the same change for decoding one day.
245 * Revision 1.18 1995/04/17 11:28:25 quinn
248 * Revision 1.17 1995/04/10 10:23:36 quinn
249 * Some work to add scan and other things.
251 * Revision 1.16 1995/03/31 09:18:55 quinn
254 * Revision 1.15 1995/03/30 14:03:23 quinn
255 * Added RFC1006 as separate library
257 * Revision 1.14 1995/03/30 12:18:17 quinn
260 * Revision 1.13 1995/03/30 09:09:24 quinn
261 * Added state-handle and some support for asynchronous activities.
263 * Revision 1.12 1995/03/29 15:40:16 quinn
264 * Ongoing work. Statserv is now dynamic by default
266 * Revision 1.11 1995/03/28 09:16:21 quinn
267 * Added record packing to the search request
269 * Revision 1.10 1995/03/27 08:34:24 quinn
270 * Added dynamic server functionality.
271 * Released bindings to session.c (is now redundant)
273 * Revision 1.9 1995/03/22 15:01:26 quinn
274 * Adjusting record packing.
276 * Revision 1.8 1995/03/22 10:13:21 quinn
277 * Working on record packer
279 * Revision 1.7 1995/03/21 15:53:31 quinn
282 * Revision 1.6 1995/03/21 12:30:09 quinn
283 * Beginning to add support for record packing.
285 * Revision 1.5 1995/03/17 10:44:13 quinn
286 * Added catch of null-string in makediagrec
288 * Revision 1.4 1995/03/17 10:18:08 quinn
289 * Added memory management.
291 * Revision 1.3 1995/03/16 17:42:39 quinn
294 * Revision 1.2 1995/03/16 13:29:01 quinn
295 * Partitioned server.
297 * Revision 1.1 1995/03/15 16:02:10 quinn
298 * Modded session.c to seshigh.c
303 * Frontend server logic.
305 * This code receives incoming APDUs, and handles client requests by means
306 * of the backend API.
308 * Some of the code is getting quite involved, compared to simpler servers -
309 * primarily because it is asynchronous both in the communication with
310 * the user and the backend. We think the complexity will pay off in
311 * the form of greater flexibility when more asynchronous facilities
314 * Memory management has become somewhat involved. In the simple case, where
315 * only one PDU is pending at a time, it will simply reuse the same memory,
316 * once it has found its working size. When we enable multiple concurrent
317 * operations, perhaps even with multiple parallel calls to the backend, it
318 * will maintain a pool of buffers for encoding and decoding, trying to
319 * minimize memory allocation/deallocation during normal operation.
321 * TODOs include (and will be done in order of public interest):
323 * Support for EXPLAIN - provide simple meta-database system.
324 * Support for access control.
325 * Support for resource control.
326 * Support for extended services - primarily Item Order.
327 * Rest of Z39.50-1994
342 #include <comstack.h>
349 #include <statserv.h>
353 static int process_request(association *assoc, request *req, char **msg);
354 void backend_response(IOCHAN i, int event);
355 static int process_response(association *assoc, request *req, Z_APDU *res);
356 static Z_APDU *process_initRequest(association *assoc, request *reqb);
357 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
359 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
360 bend_search_rr *bsrr, int *fd);
361 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
363 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd);
364 static Z_APDU *process_sortRequest(association *assoc, request *reqb, int *fd);
365 static void process_close(association *assoc, request *reqb);
366 void save_referenceId (request *reqb, Z_ReferenceId *refid);
367 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
369 static int bend_default_scan (void *handle, bend_scan_rr *rr);
371 static FILE *apduf = 0; /* for use in static mode */
372 static statserv_options_block *control_block = 0;
374 /* Chas: Added in from DALI */
375 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
376 /* Chas: End of addition from DALI */
379 * Create and initialize a new association-handle.
380 * channel : iochannel for the current line.
381 * link : communications channel.
382 * Returns: 0 or a new association handle.
384 association *create_association(IOCHAN channel, COMSTACK link)
389 control_block = statserv_getcontrol();
390 if (!(anew = (association *)xmalloc(sizeof(*anew))))
392 anew->client_chan = channel;
393 anew->client_link = link;
394 if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
395 !(anew->encode = odr_createmem(ODR_ENCODE)))
397 if (*control_block->apdufile)
402 strcpy(filename, control_block->apdufile);
403 if (!(anew->print = odr_createmem(ODR_PRINT)))
405 if (*control_block->apdufile != '-')
407 strcpy(filename, control_block->apdufile);
408 if (!control_block->dynamic)
412 if (!(apduf = fopen(filename, "w")))
414 yaz_log(LOG_WARN|LOG_ERRNO, "%s", filename);
417 setvbuf(apduf, 0, _IONBF, 0);
423 sprintf(filename + strlen(filename), ".%d", getpid());
424 if (!(f = fopen(filename, "w")))
426 yaz_log(LOG_WARN|LOG_ERRNO, "%s", filename);
429 setvbuf(f, 0, _IONBF, 0);
431 odr_setprint(anew->print, f);
436 anew->input_buffer = 0;
437 anew->input_buffer_len = 0;
439 anew->state = ASSOC_NEW;
440 request_initq(&anew->incoming);
441 request_initq(&anew->outgoing);
442 anew->proto = cs_getproto(link);
447 * Free association and release resources.
449 void destroy_association(association *h)
451 odr_destroy(h->decode);
452 odr_destroy(h->encode);
454 odr_destroy(h->print);
456 xfree(h->input_buffer);
458 bend_close(h->backend);
459 while (request_deq(&h->incoming));
460 while (request_deq(&h->outgoing));
461 request_delq(&h->incoming);
462 request_delq(&h->outgoing);
464 if (control_block && control_block->one_shot)
468 static void do_close_req(association *a, int reason, char *message,
472 Z_Close *cls = zget_Close(a->encode);
474 /* Purge request queue */
475 while (request_deq(&a->incoming));
476 while (request_deq(&a->outgoing));
479 yaz_log(LOG_LOG, "Sending Close PDU, reason=%d, message=%s",
480 reason, message ? message : "none");
481 apdu.which = Z_APDU_close;
483 *cls->closeReason = reason;
484 cls->diagnosticInformation = message;
485 process_response(a, req, &apdu);
486 iochan_settimeout(a->client_chan, 60);
490 yaz_log(LOG_DEBUG, "v2 client. No Close PDU");
491 iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
493 a->state = ASSOC_DEAD;
496 static void do_close(association *a, int reason, char *message)
498 do_close_req (a, reason, message, request_get(&a->outgoing));
502 * This is where PDUs from the client are read and the further
503 * processing is initiated. Flow of control moves down through the
504 * various process_* functions below, until the encoded result comes back up
505 * to the output handler in here.
507 * h : the I/O channel that has an outstanding event.
508 * event : the current outstanding event.
510 void ir_session(IOCHAN h, int event)
513 association *assoc = (association *)iochan_getdata(h);
514 COMSTACK conn = assoc->client_link;
517 assert(h && conn && assoc);
518 if (event == EVENT_TIMEOUT)
520 if (assoc->state != ASSOC_UP)
522 yaz_log(LOG_LOG, "Final timeout - closing connection.");
524 destroy_association(assoc);
529 yaz_log(LOG_LOG, "Session idle too long. Sending close.");
530 do_close(assoc, Z_Close_lackOfActivity, 0);
534 if (event & EVENT_INPUT || event & EVENT_WORK) /* input */
536 if (event & EVENT_INPUT)
538 yaz_log(LOG_DEBUG, "ir_session (input)");
539 assert(assoc && conn);
540 /* We aren't speaking to this fellow */
541 if (assoc->state == ASSOC_DEAD)
543 yaz_log(LOG_LOG, "Closed connection after reject");
545 destroy_association(assoc);
549 if ((res = cs_get(conn, &assoc->input_buffer,
550 &assoc->input_buffer_len)) <= 0)
552 yaz_log(LOG_LOG, "Connection closed by client");
554 destroy_association(assoc);
558 else if (res == 1) /* incomplete read - wait for more */
560 if (cs_more(conn)) /* more stuff - call us again later, please */
561 iochan_setevent(h, EVENT_INPUT);
563 /* we got a complete PDU. Let's decode it */
564 yaz_log(LOG_DEBUG, "Got PDU, %d bytes", res);
565 req = request_get(&assoc->incoming); /* get a new request structure */
566 odr_reset(assoc->decode);
567 odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
568 if (!z_APDU(assoc->decode, &req->request, 0, 0))
570 yaz_log(LOG_LOG, "ODR error on incoming PDU: %s [near byte %d] ",
571 odr_errmsg(odr_geterror(assoc->decode)),
572 odr_offset(assoc->decode));
573 yaz_log(LOG_LOG, "PDU dump:");
574 odr_dumpBER(log_file(), assoc->input_buffer, res);
575 do_close(assoc, Z_Close_protocolError, "Malformed package");
578 req->request_mem = odr_extract_mem(assoc->decode);
579 if (assoc->print && !z_APDU(assoc->print, &req->request, 0, 0))
581 yaz_log(LOG_WARN, "ODR print error: %s",
582 odr_errmsg(odr_geterror(assoc->print)));
583 odr_reset(assoc->print);
585 request_enq(&assoc->incoming, req);
588 /* can we do something yet? */
589 req = request_head(&assoc->incoming);
590 if (req->state == REQUEST_IDLE)
593 request_deq(&assoc->incoming);
594 if (process_request(assoc, req, &msg) < 0)
595 do_close_req(assoc, Z_Close_systemProblem, msg, req);
598 if (event & EVENT_OUTPUT)
600 request *req = request_head(&assoc->outgoing);
602 yaz_log(LOG_DEBUG, "ir_session (output)");
603 req->state = REQUEST_PENDING;
604 switch (res = cs_put(conn, req->response, req->len_response))
607 yaz_log(LOG_LOG, "Connection closed by client");
609 destroy_association(assoc);
612 case 0: /* all sent - release the request structure */
613 yaz_log(LOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
614 nmem_destroy(req->request_mem);
615 request_deq(&assoc->outgoing);
616 request_release(req);
617 if (!request_head(&assoc->outgoing))
618 iochan_clearflag(h, EVENT_OUTPUT);
620 /* value of 1 -- partial send -- is simply ignored */
623 if (event & EVENT_EXCEPT)
625 yaz_log(LOG_DEBUG, "ir_session (exception)");
627 destroy_association(assoc);
633 * Initiate request processing.
635 static int process_request(association *assoc, request *req, char **msg)
641 *msg = "Unknown Error";
642 assert(req && req->state == REQUEST_IDLE);
643 switch (req->request->which)
645 case Z_APDU_initRequest:
646 res = process_initRequest(assoc, req); break;
647 case Z_APDU_searchRequest:
648 res = process_searchRequest(assoc, req, &fd); break;
649 case Z_APDU_presentRequest:
650 res = process_presentRequest(assoc, req, &fd); break;
651 case Z_APDU_scanRequest:
652 if (assoc->bend_scan)
653 res = process_scanRequest(assoc, req, &fd);
656 *msg = "Cannot handle Scan APDU";
660 case Z_APDU_extendedServicesRequest:
661 if (assoc->bend_esrequest)
662 res = process_ESRequest(assoc, req, &fd);
665 *msg = "Cannot handle Extended Services APDU";
669 case Z_APDU_sortRequest:
670 if (assoc->bend_sort)
671 res = process_sortRequest(assoc, req, &fd);
674 *msg = "Cannot handle Sort APDU";
679 process_close(assoc, req);
681 case Z_APDU_deleteResultSetRequest:
682 if (assoc->bend_delete)
683 res = process_deleteRequest(assoc, req, &fd);
686 *msg = "Cannot handle Delete APDU";
691 *msg = "Bad APDU received";
696 yaz_log(LOG_DEBUG, " result immediately available");
697 retval = process_response(assoc, req, res);
701 yaz_log(LOG_DEBUG, " result unavailble");
704 else /* no result yet - one will be provided later */
708 /* Set up an I/O handler for the fd supplied by the backend */
710 yaz_log(LOG_DEBUG, " establishing handler for result");
711 req->state = REQUEST_PENDING;
712 if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT)))
714 iochan_setdata(chan, assoc);
721 * Handle message from the backend.
723 void backend_response(IOCHAN i, int event)
725 association *assoc = (association *)iochan_getdata(i);
726 request *req = request_head(&assoc->incoming);
730 yaz_log(LOG_DEBUG, "backend_response");
731 assert(assoc && req && req->state != REQUEST_IDLE);
732 /* determine what it is we're waiting for */
733 switch (req->request->which)
735 case Z_APDU_searchRequest:
736 res = response_searchRequest(assoc, req, 0, &fd); break;
738 case Z_APDU_presentRequest:
739 res = response_presentRequest(assoc, req, 0, &fd); break;
740 case Z_APDU_scanRequest:
741 res = response_scanRequest(assoc, req, 0, &fd); break;
744 yaz_log(LOG_WARN, "Serious programmer's lapse or bug");
747 if ((res && process_response(assoc, req, res) < 0) || fd < 0)
749 yaz_log(LOG_LOG, "Fatal error when talking to backend");
750 do_close(assoc, Z_Close_systemProblem, 0);
754 else if (!res) /* no result yet - try again later */
756 yaz_log(LOG_DEBUG, " no result yet");
757 iochan_setfd(i, fd); /* in case fd has changed */
762 * Encode response, and transfer the request structure to the outgoing queue.
764 static int process_response(association *assoc, request *req, Z_APDU *res)
766 odr_setbuf(assoc->encode, req->response, req->size_response, 1);
767 if (!z_APDU(assoc->encode, &res, 0, 0))
769 yaz_log(LOG_WARN, "ODR error when encoding response: %s",
770 odr_errmsg(odr_geterror(assoc->decode)));
771 odr_reset(assoc->encode);
774 req->response = odr_getbuf(assoc->encode, &req->len_response,
775 &req->size_response);
776 odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
777 if (assoc->print && !z_APDU(assoc->print, &res, 0, 0))
779 yaz_log(LOG_WARN, "ODR print error: %s",
780 odr_errmsg(odr_geterror(assoc->print)));
781 odr_reset(assoc->print);
783 odr_reset(assoc->encode);
784 req->state = REQUEST_IDLE;
785 request_enq(&assoc->outgoing, req);
786 /* turn the work over to the ir_session handler */
787 iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
788 /* Is there more work to be done? give that to the input handler too */
790 if (request_head(&assoc->incoming))
792 yaz_log (LOG_DEBUG, "more work to be done");
793 iochan_setevent(assoc->client_chan, EVENT_WORK);
800 * Handle init request.
801 * At the moment, we don't check the options
802 * anywhere else in the code - we just try not to do anything that would
803 * break a naive client. We'll toss 'em into the association block when
804 * we need them there.
806 static Z_APDU *process_initRequest(association *assoc, request *reqb)
808 Z_InitRequest *req = reqb->request->u.initRequest;
809 Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
810 Z_InitResponse *resp = apdu->u.initResponse;
811 bend_initrequest binitreq;
812 bend_initresult *binitres;
815 yaz_log(LOG_LOG, "Got initRequest");
816 if (req->implementationId)
817 yaz_log(LOG_LOG, "Id: %s", req->implementationId);
818 if (req->implementationName)
819 yaz_log(LOG_LOG, "Name: %s", req->implementationName);
820 if (req->implementationVersion)
821 yaz_log(LOG_LOG, "Version: %s", req->implementationVersion);
823 binitreq.stream = assoc->encode;
824 binitreq.configname = "default-config";
825 binitreq.auth = req->idAuthentication;
826 binitreq.referenceId = req->referenceId;
827 binitreq.implementation_version = 0;
828 binitreq.implementation_name = 0;
829 binitreq.bend_sort = NULL;
830 binitreq.bend_search = NULL;
831 binitreq.bend_present = NULL;
832 binitreq.bend_esrequest = NULL;
833 binitreq.bend_delete = NULL;
834 binitreq.bend_scan = bend_default_scan;
835 if (!(binitres = bend_init(&binitreq)))
837 yaz_log(LOG_WARN, "Bad response from backend.");
841 assoc->backend = binitres->handle;
842 if ((assoc->bend_sort = (int (*)())binitreq.bend_sort))
843 yaz_log (LOG_DEBUG, "Sort handler installed");
844 if ((assoc->bend_search = (int (*)())binitreq.bend_search))
845 yaz_log (LOG_DEBUG, "Search handler installed");
846 if ((assoc->bend_present = (int (*)())binitreq.bend_present))
847 yaz_log (LOG_DEBUG, "Present handler installed");
848 if ((assoc->bend_esrequest = (int (*)())binitreq.bend_esrequest))
849 yaz_log (LOG_DEBUG, "ESRequest handler installed");
850 if ((assoc->bend_delete = (int (*)())binitreq.bend_delete))
851 yaz_log (LOG_DEBUG, "Delete handler installed");
852 if ((assoc->bend_scan = (int (*)())binitreq.bend_scan))
853 yaz_log (LOG_DEBUG, "Scan handler installed");
855 resp->referenceId = req->referenceId;
857 /* let's tell the client what we can do */
858 if (ODR_MASK_GET(req->options, Z_Options_search))
860 ODR_MASK_SET(resp->options, Z_Options_search);
861 strcat(options, "srch");
863 if (ODR_MASK_GET(req->options, Z_Options_present))
865 ODR_MASK_SET(resp->options, Z_Options_present);
866 strcat(options, " prst");
868 if (ODR_MASK_GET(req->options, Z_Options_delSet) && binitreq.bend_delete)
870 ODR_MASK_SET(resp->options, Z_Options_delSet);
871 strcat(options, " del");
873 if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
874 binitreq.bend_esrequest)
876 ODR_MASK_SET(resp->options, Z_Options_extendedServices);
877 strcat (options, " extendedServices");
879 if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
881 ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
882 strcat(options, " namedresults");
884 if (ODR_MASK_GET(req->options, Z_Options_scan) && binitreq.bend_scan)
886 ODR_MASK_SET(resp->options, Z_Options_scan);
887 strcat(options, " scan");
889 if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
891 ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
892 strcat(options, " concurop");
894 if (ODR_MASK_GET(req->options, Z_Options_sort) && binitreq.bend_sort)
896 ODR_MASK_SET(resp->options, Z_Options_sort);
897 strcat(options, " sort");
899 if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
901 ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
902 assoc->version = 2; /* 1 & 2 are equivalent */
904 if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
906 ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
909 if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
911 ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
914 yaz_log(LOG_LOG, "Negotiated to v%d: %s", assoc->version, options);
915 assoc->maximumRecordSize = *req->maximumRecordSize;
916 if (assoc->maximumRecordSize > control_block->maxrecordsize)
917 assoc->maximumRecordSize = control_block->maxrecordsize;
918 assoc->preferredMessageSize = *req->preferredMessageSize;
919 if (assoc->preferredMessageSize > assoc->maximumRecordSize)
920 assoc->preferredMessageSize = assoc->maximumRecordSize;
921 resp->preferredMessageSize = &assoc->preferredMessageSize;
922 resp->maximumRecordSize = &assoc->maximumRecordSize;
924 resp->implementationName = "Index Data/YAZ Generic Frontend Server";
926 if (binitreq.implementation_name)
929 odr_malloc (assoc->encode,
930 strlen(binitreq.implementation_name) + 3 +
931 strlen(resp->implementationName));
932 sprintf (nv, "%s %s",
933 resp->implementationName, binitreq.implementation_name);
934 resp->implementationName = nv;
936 if (binitreq.implementation_version)
939 odr_malloc (assoc->encode,
940 strlen(binitreq.implementation_version) + 3 +
941 strlen(resp->implementationVersion));
942 sprintf (nv, "%s %s",
943 resp->implementationVersion, binitreq.implementation_version);
944 resp->implementationVersion = nv;
947 if (binitres->errcode)
949 yaz_log(LOG_LOG, "Connection rejected by backend.");
951 assoc->state = ASSOC_DEAD;
954 assoc->state = ASSOC_UP;
959 * These functions should be merged.
962 static void set_addinfo (Z_DefaultDiagFormat *dr, char *addinfo)
965 dr->which = Z_DefaultDiagFormat_v2Addinfo;
966 dr->u.v2Addinfo = addinfo ? addinfo : "";
968 dr->which = Z_DiagForm_v2AddInfo;
969 dr->addinfo = addinfo ? addinfo : "";
974 * nonsurrogate diagnostic record.
976 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
979 Z_Records *rec = (Z_Records *)
980 odr_malloc (assoc->encode, sizeof(*rec));
983 odr_malloc (assoc->encode, sizeof(*err));
984 Z_DiagRec *drec = (Z_DiagRec *)
985 odr_malloc (assoc->encode, sizeof(*drec));
986 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
987 odr_malloc (assoc->encode, sizeof(*dr));
989 bib1.proto = assoc->proto;
990 bib1.oclass = CLASS_DIAGSET;
991 bib1.value = VAL_BIB1;
993 yaz_log(LOG_DEBUG, "Diagnostic: %d -- %s", error, addinfo ? addinfo :
996 rec->which = Z_Records_NSD;
998 rec->u.nonSurrogateDiagnostic = dr;
1000 rec->u.nonSurrogateDiagnostic = drec;
1001 drec->which = Z_DiagRec_defaultFormat;
1002 drec->u.defaultFormat = dr;
1004 dr->diagnosticSetId =
1005 odr_oiddup (assoc->encode, oid_ent_to_oid(&bib1, oid));
1006 dr->condition = err;
1007 set_addinfo (dr, addinfo);
1012 * surrogate diagnostic.
1014 static Z_NamePlusRecord *surrogatediagrec(association *assoc, char *dbname,
1015 int error, char *addinfo)
1018 Z_NamePlusRecord *rec = (Z_NamePlusRecord *)
1019 odr_malloc (assoc->encode, sizeof(*rec));
1020 int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
1022 Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
1023 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1024 odr_malloc (assoc->encode, sizeof(*dr));
1026 bib1.proto = assoc->proto;
1027 bib1.oclass = CLASS_DIAGSET;
1028 bib1.value = VAL_BIB1;
1030 yaz_log(LOG_DEBUG, "SurrogateDiagnotic: %d -- %s", error, addinfo);
1032 rec->databaseName = dbname;
1033 rec->which = Z_NamePlusRecord_surrogateDiagnostic;
1034 rec->u.surrogateDiagnostic = drec;
1035 drec->which = Z_DiagRec_defaultFormat;
1036 drec->u.defaultFormat = dr;
1037 dr->diagnosticSetId = odr_oiddup (assoc->encode,
1038 oid_ent_to_oid(&bib1, oid));
1039 dr->condition = err;
1040 set_addinfo (dr, addinfo);
1046 * multiple nonsurrogate diagnostics.
1048 static Z_DiagRecs *diagrecs(association *assoc, int error, char *addinfo)
1051 Z_DiagRecs *recs = (Z_DiagRecs *)odr_malloc (assoc->encode, sizeof(*recs));
1052 int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
1054 Z_DiagRec **recp = (Z_DiagRec **)odr_malloc (assoc->encode, sizeof(*recp));
1055 Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
1056 Z_DefaultDiagFormat *rec = (Z_DefaultDiagFormat *)odr_malloc (assoc->encode, sizeof(*rec));
1058 yaz_log(LOG_DEBUG, "DiagRecs: %d -- %s", error, addinfo ? addinfo : "");
1059 bib1.proto = assoc->proto;
1060 bib1.oclass = CLASS_DIAGSET;
1061 bib1.value = VAL_BIB1;
1064 recs->num_diagRecs = 1;
1065 recs->diagRecs = recp;
1067 drec->which = Z_DiagRec_defaultFormat;
1068 drec->u.defaultFormat = rec;
1070 rec->diagnosticSetId = odr_oiddup (assoc->encode,
1071 oid_ent_to_oid(&bib1, oid));
1072 rec->condition = err;
1075 rec->which = Z_DefaultDiagFormat_v2Addinfo;
1076 rec->u.v2Addinfo = addinfo ? addinfo : "";
1078 rec->which = Z_DiagForm_v2AddInfo;
1079 rec->addinfo = addinfo ? addinfo : "";
1084 static Z_Records *pack_records(association *a, char *setname, int start,
1085 int *num, Z_RecordComposition *comp,
1086 int *next, int *pres, oid_value format,
1087 Z_ReferenceId *referenceId)
1089 int recno, total_length = 0, toget = *num, dumped_records = 0;
1090 Z_Records *records =
1091 (Z_Records *) odr_malloc (a->encode, sizeof(*records));
1092 Z_NamePlusRecordList *reclist =
1093 (Z_NamePlusRecordList *) odr_malloc (a->encode, sizeof(*reclist));
1094 Z_NamePlusRecord **list =
1095 (Z_NamePlusRecord **) odr_malloc (a->encode, sizeof(*list) * toget);
1097 records->which = Z_Records_DBOSD;
1098 records->u.databaseOrSurDiagnostics = reclist;
1099 reclist->num_records = 0;
1100 reclist->records = list;
1101 *pres = Z_PRES_SUCCESS;
1105 yaz_log(LOG_LOG, "Request to pack %d+%d", start, toget);
1106 yaz_log(LOG_DEBUG, "pms=%d, mrs=%d", a->preferredMessageSize,
1107 a->maximumRecordSize);
1108 for (recno = start; reclist->num_records < toget; recno++)
1110 bend_fetchrequest freq;
1111 bend_fetchresult *fres;
1112 Z_NamePlusRecord *thisrec;
1113 int this_length = 0;
1115 * we get the number of bytes allocated on the stream before any
1116 * allocation done by the backend - this should give us a reasonable
1117 * idea of the total size of the data so far.
1119 total_length = odr_total(a->encode) - dumped_records;
1120 freq.setname = setname;
1121 freq.number = recno;
1123 freq.format = format;
1124 freq.stream = a->encode;
1125 freq.surrogate_flag = 0;
1126 freq.referenceId = referenceId;
1127 if (!(fres = bend_fetch(a->backend, &freq, 0)))
1129 *pres = Z_PRES_FAILURE;
1130 return diagrec(a, 2, "Backend interface problem");
1132 /* backend should be able to signal whether error is system-wide
1133 or only pertaining to current record */
1136 if (!freq.surrogate_flag)
1138 *pres = Z_PRES_FAILURE;
1139 return diagrec(a, fres->errcode, fres->errstring);
1141 reclist->records[reclist->num_records] =
1142 surrogatediagrec(a, fres->basename, fres->errcode,
1144 reclist->num_records++;
1145 *next = fres->last_in_set ? 0 : recno + 1;
1149 this_length = fres->len;
1151 this_length = odr_total(a->encode) - total_length;
1152 yaz_log(LOG_DEBUG, " fetched record, len=%d, total=%d",
1153 this_length, total_length);
1154 if (this_length + total_length > a->preferredMessageSize)
1156 /* record is small enough, really */
1157 if (this_length <= a->preferredMessageSize)
1159 yaz_log(LOG_DEBUG, " Dropped last normal-sized record");
1160 *pres = Z_PRES_PARTIAL_2;
1163 /* record can only be fetched by itself */
1164 if (this_length < a->maximumRecordSize)
1166 yaz_log(LOG_DEBUG, " Record > prefmsgsz");
1169 yaz_log(LOG_DEBUG, " Dropped it");
1170 reclist->records[reclist->num_records] =
1171 surrogatediagrec(a, fres->basename, 16, 0);
1172 reclist->num_records++;
1173 *next = fres->last_in_set ? 0 : recno + 1;
1174 dumped_records += this_length;
1178 else /* too big entirely */
1180 yaz_log(LOG_DEBUG, "Record > maxrcdsz");
1181 reclist->records[reclist->num_records] =
1182 surrogatediagrec(a, fres->basename, 17, 0);
1183 reclist->num_records++;
1184 *next = fres->last_in_set ? 0 : recno + 1;
1185 dumped_records += this_length;
1190 if (!(thisrec = (Z_NamePlusRecord *)
1191 odr_malloc(a->encode, sizeof(*thisrec))))
1193 if (!(thisrec->databaseName = (char *)odr_malloc(a->encode,
1194 strlen(fres->basename) + 1)))
1196 strcpy(thisrec->databaseName, fres->basename);
1197 thisrec->which = Z_NamePlusRecord_databaseRecord;
1198 thisrec->u.databaseRecord = z_ext_record(a->encode, fres->format,
1199 fres->record, fres->len);
1200 if (!thisrec->u.databaseRecord)
1202 reclist->records[reclist->num_records] = thisrec;
1203 reclist->num_records++;
1204 *next = fres->last_in_set ? 0 : recno + 1;
1206 *num = reclist->num_records;
1210 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
1213 Z_SearchRequest *req = reqb->request->u.searchRequest;
1214 bend_search_rr *bsrr =
1215 (bend_search_rr *)nmem_malloc (reqb->request_mem, sizeof(*bsrr));
1217 yaz_log(LOG_LOG, "Got SearchRequest.");
1219 bsrr->request = reqb;
1220 bsrr->association = assoc;
1221 bsrr->referenceId = req->referenceId;
1222 save_referenceId (reqb, bsrr->referenceId);
1224 yaz_log (LOG_LOG, "ResultSet '%s'", req->resultSetName);
1225 if (req->databaseNames)
1228 for (i = 0; i < req->num_databaseNames; i++)
1229 yaz_log (LOG_LOG, "Database '%s'", req->databaseNames[i]);
1231 switch (req->query->which)
1233 case Z_Query_type_1: case Z_Query_type_101:
1234 log_rpn_query (req->query->u.type_1);
1236 if (assoc->bend_search)
1238 bsrr->setname = req->resultSetName;
1239 bsrr->replace_set = *req->replaceIndicator;
1240 bsrr->num_bases = req->num_databaseNames;
1241 bsrr->basenames = req->databaseNames;
1242 bsrr->query = req->query;
1243 bsrr->stream = assoc->encode;
1244 bsrr->decode = assoc->decode;
1247 bsrr->errstring = NULL;
1248 ((int (*)(void *, bend_search_rr *))(assoc->bend_search))
1249 (assoc->backend, bsrr);
1255 bend_searchrequest bsrq;
1256 bend_searchresult *bsrt;
1258 bsrq.setname = req->resultSetName;
1259 bsrq.replace_set = *req->replaceIndicator;
1260 bsrq.num_bases = req->num_databaseNames;
1261 bsrq.basenames = req->databaseNames;
1262 bsrq.query = req->query;
1263 bsrq.referenceId = req->referenceId;
1264 bsrq.stream = assoc->encode;
1265 bsrq.decode = assoc->decode;
1266 if (!(bsrt = bend_search (assoc->backend, &bsrq, fd)))
1268 bsrr->hits = bsrt->hits;
1269 bsrr->errcode = bsrt->errcode;
1270 bsrr->errstring = bsrt->errstring;
1272 return response_searchRequest(assoc, reqb, bsrr, fd);
1275 int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
1278 * Prepare a searchresponse based on the backend results. We probably want
1279 * to look at making the fetching of records nonblocking as well, but
1280 * so far, we'll keep things simple.
1281 * If bsrt is null, that means we're called in response to a communications
1282 * event, and we'll have to get the response for ourselves.
1284 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
1285 bend_search_rr *bsrt, int *fd)
1287 Z_SearchRequest *req = reqb->request->u.searchRequest;
1288 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1289 Z_SearchResponse *resp = (Z_SearchResponse *)
1290 odr_malloc (assoc->encode, sizeof(*resp));
1291 int *nulint = (int *)odr_malloc (assoc->encode, sizeof(*nulint));
1292 bool_t *sr = (bool_t *)odr_malloc (assoc->encode, sizeof(*sr));
1293 int *next = (int *)odr_malloc (assoc->encode, sizeof(*next));
1294 int *none = (int *)odr_malloc (assoc->encode, sizeof(*none));
1301 apdu->which = Z_APDU_searchResponse;
1302 apdu->u.searchResponse = resp;
1303 resp->referenceId = req->referenceId;
1304 resp->additionalSearchInfo = 0;
1305 resp->otherInfo = 0;
1307 if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
1309 yaz_log(LOG_FATAL, "Bad result from backend");
1312 else if (bsrt->errcode)
1314 resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
1315 resp->resultCount = nulint;
1316 resp->numberOfRecordsReturned = nulint;
1317 resp->nextResultSetPosition = nulint;
1318 resp->searchStatus = nulint;
1319 resp->resultSetStatus = none;
1320 resp->presentStatus = 0;
1324 int *toget = (int *)odr_malloc (assoc->encode, sizeof(*toget));
1325 int *presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
1326 Z_RecordComposition comp, *compp = 0;
1331 resp->resultCount = &bsrt->hits;
1333 comp.which = Z_RecordComp_simple;
1334 /* how many records does the user agent want, then? */
1335 if (bsrt->hits <= *req->smallSetUpperBound)
1337 *toget = bsrt->hits;
1338 if ((comp.u.simple = req->smallSetElementSetNames))
1341 else if (bsrt->hits < *req->largeSetLowerBound)
1343 *toget = *req->mediumSetPresentNumber;
1344 if (*toget > bsrt->hits)
1345 *toget = bsrt->hits;
1346 if ((comp.u.simple = req->mediumSetElementSetNames))
1352 if (*toget && !resp->records)
1357 if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
1358 prefformat->oclass != CLASS_RECSYN)
1361 form = prefformat->value;
1362 resp->records = pack_records(assoc, req->resultSetName, 1,
1363 toget, compp, next, presst, form, req->referenceId);
1366 resp->numberOfRecordsReturned = toget;
1367 resp->nextResultSetPosition = next;
1368 resp->searchStatus = sr;
1369 resp->resultSetStatus = 0;
1370 resp->presentStatus = presst;
1374 if (*resp->resultCount)
1376 resp->numberOfRecordsReturned = nulint;
1377 resp->nextResultSetPosition = next;
1378 resp->searchStatus = sr;
1379 resp->resultSetStatus = 0;
1380 resp->presentStatus = 0;
1387 * Maybe we got a little over-friendly when we designed bend_fetch to
1388 * get only one record at a time. Some backends can optimise multiple-record
1389 * fetches, and at any rate, there is some overhead involved in
1390 * all that selecting and hopping around. Problem is, of course, that the
1391 * frontend can't know ahead of time how many records it'll need to
1392 * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
1393 * is downright lousy as a bulk data transfer protocol.
1395 * To start with, we'll do the fetching of records from the backend
1396 * in one operation: To save some trips in and out of the event-handler,
1397 * and to simplify the interface to pack_records. At any rate, asynch
1398 * operation is more fun in operations that have an unpredictable execution
1399 * speed - which is normally more true for search than for present.
1401 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
1404 Z_PresentRequest *req = reqb->request->u.presentRequest;
1408 Z_PresentResponse *resp;
1413 yaz_log(LOG_LOG, "Got PresentRequest.");
1415 if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
1416 prefformat->oclass != CLASS_RECSYN)
1419 form = prefformat->value;
1420 if (assoc->bend_present)
1422 bend_present_rr *bprr = (bend_present_rr *)
1423 nmem_malloc (reqb->request_mem, sizeof(*bprr));
1424 bprr->setname = req->resultSetId;
1425 bprr->start = *req->resultSetStartPoint;
1426 bprr->number = *req->numberOfRecordsRequested;
1427 bprr->format = form;
1428 bprr->comp = req->recordComposition;
1429 bprr->referenceId = req->referenceId;
1430 bprr->stream = assoc->encode;
1431 bprr->request = reqb;
1432 bprr->association = assoc;
1434 bprr->errstring = NULL;
1435 ((int (*)(void *, bend_present_rr *))(*assoc->bend_present))(
1436 assoc->backend, bprr);
1441 apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1442 resp = (Z_PresentResponse *)odr_malloc (assoc->encode, sizeof(*resp));
1443 presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
1444 next = (int *)odr_malloc (assoc->encode, sizeof(*next));
1445 num = (int *)odr_malloc (assoc->encode, sizeof(*num));
1448 *num = *req->numberOfRecordsRequested;
1450 apdu->which = Z_APDU_presentResponse;
1451 apdu->u.presentResponse = resp;
1452 resp->referenceId = req->referenceId;
1453 resp->otherInfo = 0;
1456 pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
1457 num, req->recordComposition, next, presst, form,
1461 resp->numberOfRecordsReturned = num;
1462 resp->presentStatus = presst;
1463 resp->nextResultSetPosition = next;
1468 static int bend_default_scan (void *handle, bend_scan_rr *rr)
1470 bend_scanrequest srq;
1471 bend_scanresult *srs;
1473 srq.num_bases = rr->num_bases;
1474 srq.basenames = rr->basenames;
1475 srq.attributeset = rr->attributeset;
1476 srq.referenceId = rr->referenceId;
1477 srq.term = rr->term;
1478 srq.term_position = rr->term_position;
1479 srq.num_entries = rr->num_entries;
1480 srq.stream = rr->stream;
1482 srs = bend_scan(handle, &srq, 0);
1484 rr->term_position = srs->term_position;
1485 rr->num_entries = srs->num_entries;
1486 rr->entries = srs->entries;
1487 rr->status = srs->status;
1488 rr->errcode = srs->errcode;
1489 rr->errstring = srs->errstring;
1494 * Scan was implemented rather in a hurry, and with support for only the basic
1495 * elements of the service in the backend API. Suggestions are welcome.
1497 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
1499 Z_ScanRequest *req = reqb->request->u.scanRequest;
1500 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1501 Z_ScanResponse *res = (Z_ScanResponse *)
1502 odr_malloc (assoc->encode, sizeof(*res));
1503 int *scanStatus = (int *)
1504 odr_malloc (assoc->encode, sizeof(*scanStatus));
1505 int *numberOfEntriesReturned = (int *)
1506 odr_malloc (assoc->encode, sizeof(*numberOfEntriesReturned));
1507 Z_ListEntries *ents = (Z_ListEntries *)
1508 odr_malloc (assoc->encode, sizeof(*ents));
1509 Z_DiagRecs *diagrecs_p = NULL;
1513 yaz_log(LOG_LOG, "Got ScanRequest");
1514 *scanStatus = Z_Scan_failure;
1515 *numberOfEntriesReturned = 0;
1517 apdu->which = Z_APDU_scanResponse;
1518 apdu->u.scanResponse = res;
1519 res->referenceId = req->referenceId;
1521 res->scanStatus = scanStatus;
1522 res->numberOfEntriesReturned = numberOfEntriesReturned;
1523 res->positionOfTerm = 0;
1524 res->entries = ents;
1525 ents->num_entries = 0;
1526 ents->entries = NULL;
1527 ents->num_nonsurrogateDiagnostics = 0;
1528 ents->nonsurrogateDiagnostics = NULL;
1529 res->attributeSet = 0;
1532 if (req->attributeSet && (!(attent = oid_getentbyoid(req->attributeSet)) ||
1533 attent->oclass != CLASS_ATTSET
1534 || attent->value != VAL_BIB1))
1535 diagrecs_p = diagrecs(assoc, 121, 0);
1536 else if (req->stepSize && *req->stepSize > 0)
1537 diagrecs_p = diagrecs(assoc, 205, 0);
1540 bend_scan_rr *bsrr = (bend_scan_rr *)
1541 odr_malloc (assoc->encode, sizeof(*bsrr));
1542 if (req->databaseNames)
1545 for (i = 0; i < req->num_databaseNames; i++)
1546 yaz_log (LOG_LOG, "Database '%s'", req->databaseNames[i]);
1548 bsrr->num_bases = req->num_databaseNames;
1549 bsrr->basenames = req->databaseNames;
1550 bsrr->num_entries = *req->numberOfTermsRequested;
1551 bsrr->term = req->termListAndStartPoint;
1552 bsrr->referenceId = req->referenceId;
1553 bsrr->stream = assoc->encode;
1554 if (!(attset = oid_getentbyoid(req->attributeSet)) ||
1555 attset->oclass != CLASS_RECSYN)
1556 bsrr->attributeset = VAL_NONE;
1558 bsrr->attributeset = attset->value;
1559 log_scan_term (req->termListAndStartPoint, attset->value);
1560 bsrr->term_position = req->preferredPositionInResponse ?
1561 *req->preferredPositionInResponse : 1;
1562 ((int (*)(void *, bend_scan_rr *))(*assoc->bend_scan))(assoc->backend,
1565 diagrecs_p = diagrecs(assoc, bsrr->errcode, bsrr->errstring);
1569 Z_Entry **tab = (Z_Entry **)
1570 odr_malloc (assoc->encode, sizeof(*tab) * bsrr->num_entries);
1572 if (bsrr->status == BEND_SCAN_PARTIAL)
1573 *scanStatus = Z_Scan_partial_5;
1575 *scanStatus = Z_Scan_success;
1576 ents->entries = tab;
1577 ents->num_entries = bsrr->num_entries;
1578 res->numberOfEntriesReturned = &ents->num_entries;
1579 res->positionOfTerm = &bsrr->term_position;
1580 for (i = 0; i < bsrr->num_entries; i++)
1586 tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
1587 if (bsrr->entries[i].occurrences >= 0)
1589 e->which = Z_Entry_termInfo;
1590 e->u.termInfo = t = (Z_TermInfo *)
1591 odr_malloc(assoc->encode, sizeof(*t));
1592 t->suggestedAttributes = 0;
1594 t->alternativeTerm = 0;
1595 t->byAttributes = 0;
1596 t->otherTermInfo = 0;
1597 t->globalOccurrences = &bsrr->entries[i].occurrences;
1598 t->term = (Z_Term *)
1599 odr_malloc(assoc->encode, sizeof(*t->term));
1600 t->term->which = Z_Term_general;
1601 t->term->u.general = o =
1602 (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
1603 o->buf = (unsigned char *)
1604 odr_malloc(assoc->encode, o->len = o->size =
1605 strlen(bsrr->entries[i].term));
1606 memcpy(o->buf, bsrr->entries[i].term, o->len);
1607 yaz_log(LOG_DEBUG, " term #%d: '%s' (%d)", i,
1608 bsrr->entries[i].term, bsrr->entries[i].occurrences);
1612 Z_DiagRecs *drecs = diagrecs (assoc,
1613 bsrr->entries[i].errcode,
1614 bsrr->entries[i].errstring);
1615 assert (drecs->num_diagRecs == 1);
1616 e->which = Z_Entry_surrogateDiagnostic;
1617 assert (drecs->diagRecs[0]);
1618 e->u.surrogateDiagnostic = drecs->diagRecs[0];
1625 ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
1626 ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
1631 static Z_APDU *process_sortRequest(association *assoc, request *reqb,
1634 Z_SortRequest *req = reqb->request->u.sortRequest;
1635 Z_SortResponse *res = (Z_SortResponse *)
1636 odr_malloc (assoc->encode, sizeof(*res));
1637 bend_sort_rr *bsrr = (bend_sort_rr *)
1638 odr_malloc (assoc->encode, sizeof(*bsrr));
1640 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1642 yaz_log(LOG_LOG, "Got SortRequest.");
1645 bsrr->num_input_setnames = req->num_inputResultSetNames;
1646 bsrr->input_setnames = req->inputResultSetNames;
1648 bsrr->num_input_setnames = req->inputResultSetNames->num_strings;
1649 bsrr->input_setnames = req->inputResultSetNames->strings;
1651 bsrr->referenceId = req->referenceId;
1652 bsrr->output_setname = req->sortedResultSetName;
1653 bsrr->sort_sequence = req->sortSequence;
1654 bsrr->stream = assoc->encode;
1656 bsrr->sort_status = Z_SortStatus_failure;
1658 bsrr->errstring = 0;
1660 ((int (*)(void *, bend_sort_rr *))(*assoc->bend_sort))(assoc->backend,
1663 res->referenceId = bsrr->referenceId;
1664 res->sortStatus = (int *)
1665 odr_malloc (assoc->encode, sizeof(*res->sortStatus));
1666 *res->sortStatus = bsrr->sort_status;
1667 res->resultSetStatus = 0;
1670 Z_DiagRecs *dr = diagrecs (assoc, bsrr->errcode, bsrr->errstring);
1672 res->diagnostics = dr->diagRecs;
1673 res->num_diagnostics = dr->num_diagRecs;
1675 res->diagnostics = dr;
1681 res->num_diagnostics = 0;
1683 res->diagnostics = 0;
1687 apdu->which = Z_APDU_sortResponse;
1688 apdu->u.sortResponse = res;
1692 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
1695 Z_DeleteResultSetRequest *req = reqb->request->u.deleteResultSetRequest;
1696 Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
1697 odr_malloc (assoc->encode, sizeof(*res));
1698 bend_delete_rr *bdrr = (bend_delete_rr *)
1699 odr_malloc (assoc->encode, sizeof(*bdrr));
1700 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1702 yaz_log(LOG_LOG, "Got DeleteRequest.");
1704 bdrr->num_setnames = req->num_resultSetList;
1705 bdrr->setnames = req->resultSetList;
1706 bdrr->stream = assoc->encode;
1707 bdrr->function = *req->deleteFunction;
1708 bdrr->referenceId = req->referenceId;
1710 ((int (*)(void *, bend_delete_rr *))
1711 (*assoc->bend_delete))(assoc->backend, bdrr);
1713 res->referenceId = req->referenceId;
1715 res->deleteOperationStatus = (int *)
1716 odr_malloc (assoc->encode, sizeof(*res->deleteOperationStatus));
1717 *res->deleteOperationStatus = bdrr->delete_status;
1719 res->deleteListStatuses = 0;
1720 res->numberNotDeleted = 0;
1721 res->bulkStatuses = 0;
1722 res->deleteMessage = 0;
1725 apdu->which = Z_APDU_deleteResultSetResponse;
1726 apdu->u.deleteResultSetResponse = res;
1730 static void process_close(association *assoc, request *reqb)
1732 Z_Close *req = reqb->request->u.close;
1733 static char *reasons[] =
1740 "securityViolation",
1747 yaz_log(LOG_LOG, "Got Close, reason %s, message %s",
1748 reasons[*req->closeReason], req->diagnosticInformation ?
1749 req->diagnosticInformation : "NULL");
1750 if (assoc->version < 3) /* to make do_force respond with close */
1752 do_close_req(assoc, Z_Close_finished,
1753 "Association terminated by client", reqb);
1756 void save_referenceId (request *reqb, Z_ReferenceId *refid)
1760 reqb->len_refid = refid->len;
1761 reqb->refid = (char *)nmem_malloc (reqb->request_mem, refid->len);
1762 memcpy (reqb->refid, refid->buf, refid->len);
1766 reqb->len_refid = 0;
1771 void bend_request_send (bend_association a, bend_request req, Z_APDU *res)
1773 process_response (a, req, res);
1776 bend_request bend_request_mk (bend_association a)
1778 request *nreq = request_get (&a->outgoing);
1779 nreq->request_mem = nmem_create ();
1783 Z_ReferenceId *bend_request_getid (ODR odr, bend_request req)
1788 id = (Odr_oct *)odr_malloc (odr, sizeof(*odr));
1789 id->buf = (unsigned char *)odr_malloc (odr, req->len_refid);
1790 id->len = id->size = req->len_refid;
1791 memcpy (id->buf, req->refid, req->len_refid);
1795 void bend_request_destroy (bend_request *req)
1797 nmem_destroy((*req)->request_mem);
1798 request_release(*req);
1802 int bend_backend_respond (bend_association a, bend_request req)
1806 r = process_request (a, req, &msg);
1808 logf (LOG_WARN, "%s", msg);
1812 void bend_request_setdata(bend_request r, void *p)
1817 void *bend_request_getdata(bend_request r)
1819 return r->clientData;
1822 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
1824 bend_esrequest_rr esrequest;
1826 Z_ExtendedServicesRequest *req = reqb->request->u.extendedServicesRequest;
1827 Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
1829 Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
1831 yaz_log(LOG_DEBUG,"inside Process esRequest");
1833 esrequest.esr = reqb->request->u.extendedServicesRequest;
1834 esrequest.stream = assoc->encode;
1835 esrequest.errcode = 0;
1836 esrequest.errstring = NULL;
1837 esrequest.request = reqb;
1838 esrequest.association = assoc;
1839 esrequest.referenceId = req->referenceId;
1841 ((int (*)(void *, bend_esrequest_rr *))(*assoc->bend_esrequest))
1842 (assoc->backend, &esrequest);
1844 /* If the response is being delayed, return NULL */
1845 if (esrequest.request == NULL)
1848 resp->referenceId = req->referenceId;
1850 if (esrequest.errcode == -1)
1852 /* Backend service indicates request will be processed */
1853 yaz_log(LOG_DEBUG,"Request could be processed...Accepted !");
1854 *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
1856 else if (esrequest.errcode == 0)
1858 /* Backend service indicates request will be processed */
1859 yaz_log(LOG_DEBUG,"Request could be processed...Done !");
1860 *resp->operationStatus = Z_ExtendedServicesResponse_done;
1864 Z_DiagRecs *diagRecs = diagrecs (assoc, esrequest.errcode,
1865 esrequest.errstring);
1867 /* Backend indicates error, request will not be processed */
1868 yaz_log(LOG_DEBUG,"Request could not be processed...failure !");
1869 *resp->operationStatus = Z_ExtendedServicesResponse_failure;
1870 resp->num_diagnostics = diagRecs->num_diagRecs;
1871 resp->diagnostics = diagRecs->diagRecs;
1873 /* Do something with the members of bend_extendedservice */
1875 yaz_log(LOG_DEBUG,"Send the result apdu");