2 * Copyright (c) 1995-1999, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.96 1999-11-04 14:58:44 adam
8 * Added status elements for backend delete result set handler.
9 * Updated delete result result set command for client.
11 * Revision 1.95 1999/10/11 10:01:24 adam
12 * Implemented bend_sort_rr handler for frontend server.
14 * Revision 1.94 1999/08/27 09:40:32 adam
15 * Renamed logf function to yaz_log. Removed VC++ project files.
17 * Revision 1.93 1999/07/06 12:17:15 adam
18 * Added option -1 that runs server once (for profiling purposes).
20 * Revision 1.92 1999/06/17 10:54:45 adam
21 * Added facility to specify implementation version - and name
24 * Revision 1.91 1999/06/01 14:29:12 adam
25 * Work on Extended Services.
27 * Revision 1.90 1999/05/27 13:02:20 adam
28 * Assigned OID for old DB Update (VAL_DBUPDATE0).
30 * Revision 1.89 1999/05/26 15:24:26 adam
31 * Fixed minor bugs regarding DB Update (introduced by previous commit).
33 * Revision 1.88 1999/04/20 09:56:48 adam
34 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
35 * Modified all encoders/decoders to reflect this change.
37 * Revision 1.87 1999/03/31 11:18:25 adam
38 * Implemented odr_strdup. Added Reference ID to backend server API.
40 * Revision 1.86 1999/02/02 13:57:38 adam
41 * Uses preprocessor define WIN32 instead of WINDOWS to build code
42 * for Microsoft WIN32.
44 * Revision 1.85 1998/11/17 09:52:59 adam
45 * Fixed minor bug (introduced by previous commit).
47 * Revision 1.84 1998/11/16 16:02:32 adam
48 * Added loggin utilies, log_rpn_query and log_scan_term. These used
49 * to be part of Zebra.
51 * Revision 1.83 1998/11/03 10:09:36 adam
52 * Fixed bug regarding YC.
54 * Revision 1.82 1998/10/20 14:00:30 quinn
57 * Revision 1.81 1998/10/13 16:12:24 adam
58 * Added support for Surrogate Diagnostics for Scan Term entries.
60 * Revision 1.80 1998/09/02 12:41:53 adam
61 * Added decode stream in bend search structures.
63 * Revision 1.79 1998/08/19 16:10:08 adam
64 * Changed som member names of DeleteResultSetRequest/Response.
66 * Revision 1.78 1998/08/03 10:23:55 adam
67 * Fixed bug regarding Options for Sort.
69 * Revision 1.77 1998/07/20 12:38:42 adam
70 * Implemented delete result set service to server API.
72 * Revision 1.76 1998/05/27 16:57:07 adam
73 * Support for surrogate diagnostic records added for bend_fetch.
75 * Revision 1.75 1998/05/18 10:13:07 adam
76 * Fixed call to es_request handler - extra argument was passed.
78 * Revision 1.74 1998/03/31 15:13:20 adam
79 * Development towards compiled ASN.1.
81 * Revision 1.73 1998/03/31 11:07:45 adam
82 * Furhter work on UNIverse resource report.
83 * Added Extended Services handling in frontend server.
85 * Revision 1.72 1998/02/11 11:53:35 adam
86 * Changed code so that it compiles as C++.
88 * Revision 1.71 1998/02/10 11:03:57 adam
89 * Added support for extended handlers in backend server interface.
91 * Revision 1.70 1998/01/29 13:15:35 adam
92 * Implemented sort for the backend interface.
94 * Revision 1.69 1997/09/30 11:48:12 adam
95 * Fixed bug introduced by previous commit.
97 * Revision 1.68 1997/09/29 13:18:59 adam
98 * Added function, oid_ent_to_oid, to replace the function
99 * oid_getoidbyent, which is not thread safe.
101 * Revision 1.67 1997/09/17 12:10:40 adam
104 * Revision 1.66 1997/09/05 15:26:44 adam
105 * Added ODR encode in search and scen bend request structures.
106 * Fixed a few enums that caused trouble with C++.
108 * Revision 1.65 1997/09/01 08:53:01 adam
109 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
110 * moved a separate directory. MSV5.0 project server.dsp created.
111 * As an option, the server can now operate as an NT service.
113 * Revision 1.64 1997/04/30 08:52:11 quinn
116 * Revision 1.63 1996/10/11 11:57:26 quinn
119 * Revision 1.62 1996/07/06 19:58:35 quinn
120 * System headerfiles gathered in yconfig
122 * Revision 1.61 1996/06/10 08:56:16 quinn
125 * Revision 1.60 1996/05/30 11:03:10 quinn
126 * Fixed NextresultSetPosition bug fixed.
128 * Revision 1.59 1996/05/14 09:26:46 quinn
129 * Added attribute set to scan backend
131 * Revision 1.58 1996/02/20 12:53:04 quinn
134 * Revision 1.57 1996/01/02 08:57:47 quinn
135 * Changed enums in the ASN.1 .h files to #defines. Changed oident.class to oclass
137 * Revision 1.56 1995/12/14 11:09:57 quinn
140 * Revision 1.55 1995/11/08 17:41:37 quinn
143 * Revision 1.54 1995/11/08 15:11:29 quinn
144 * Log of close transmit.
146 * Revision 1.53 1995/11/01 13:54:58 quinn
149 * Revision 1.52 1995/11/01 12:19:13 quinn
150 * Second attempt to fix same bug.
152 * Revision 1.50 1995/10/25 16:58:32 quinn
155 * Revision 1.49 1995/10/16 13:51:53 quinn
156 * Changes to provide Especs to the backend.
158 * Revision 1.48 1995/10/06 08:51:20 quinn
159 * Added Write-buffer.
161 * Revision 1.47 1995/08/29 14:24:16 quinn
162 * Added second half of close-handshake
164 * Revision 1.46 1995/08/29 11:17:58 quinn
165 * Added code to receive close
167 * Revision 1.45 1995/08/21 09:11:00 quinn
168 * Smallish fixes to suppport new formats.
170 * Revision 1.44 1995/08/17 12:45:25 quinn
171 * Fixed minor problems with GRS-1. Added support in c&s.
173 * Revision 1.43 1995/08/15 12:00:31 quinn
176 * Revision 1.42 1995/08/15 11:16:50 quinn
178 * Revision 1.41 1995/08/02 10:23:06 quinn
181 * Revision 1.40 1995/07/31 14:34:26 quinn
182 * Fixed bug in process_searchResponse (numberOfRecordsReturned).
184 * Revision 1.39 1995/06/27 13:21:00 quinn
187 * Revision 1.38 1995/06/19 12:39:11 quinn
188 * Fixed bug in timeout code. Added BER dumper.
190 * Revision 1.37 1995/06/16 13:16:14 quinn
191 * Fixed Defaultdiagformat.
193 * Revision 1.36 1995/06/16 10:31:36 quinn
194 * Added session timeout.
196 * Revision 1.35 1995/06/15 07:45:14 quinn
199 * Revision 1.34 1995/06/14 15:26:46 quinn
200 * *** empty log message ***
202 * Revision 1.33 1995/06/06 14:57:05 quinn
203 * Better diagnostics.
205 * Revision 1.32 1995/06/06 08:41:44 quinn
206 * Better diagnostics.
208 * Revision 1.31 1995/06/06 08:15:37 quinn
211 * Revision 1.30 1995/06/05 10:53:32 quinn
212 * Added a better SCAN.
214 * Revision 1.29 1995/06/01 11:25:03 quinn
217 * Revision 1.28 1995/06/01 11:21:01 quinn
218 * Attempting to fix a bug in pack-records. replaced break with continue
219 * for large records, according to standard.
221 * Revision 1.27 1995/05/29 08:12:06 quinn
224 * Revision 1.26 1995/05/18 13:02:12 quinn
227 * Revision 1.25 1995/05/17 08:42:26 quinn
228 * Transfer auth info to backend. Allow backend to reject init gracefully.
230 * Revision 1.24 1995/05/16 08:51:04 quinn
231 * License, documentation, and memory fixes
233 * Revision 1.23 1995/05/15 13:25:10 quinn
236 * Revision 1.22 1995/05/15 11:56:39 quinn
237 * Asynchronous facilities. Restructuring of seshigh code.
239 * Revision 1.21 1995/05/02 08:53:19 quinn
240 * Trying in vain to fix comm with ISODE
242 * Revision 1.20 1995/04/20 15:13:00 quinn
245 * Revision 1.19 1995/04/18 08:15:34 quinn
246 * Added dynamic memory allocation on encoding (whew). Code is now somewhat
247 * neater. We'll make the same change for decoding one day.
249 * Revision 1.18 1995/04/17 11:28:25 quinn
252 * Revision 1.17 1995/04/10 10:23:36 quinn
253 * Some work to add scan and other things.
255 * Revision 1.16 1995/03/31 09:18:55 quinn
258 * Revision 1.15 1995/03/30 14:03:23 quinn
259 * Added RFC1006 as separate library
261 * Revision 1.14 1995/03/30 12:18:17 quinn
264 * Revision 1.13 1995/03/30 09:09:24 quinn
265 * Added state-handle and some support for asynchronous activities.
267 * Revision 1.12 1995/03/29 15:40:16 quinn
268 * Ongoing work. Statserv is now dynamic by default
270 * Revision 1.11 1995/03/28 09:16:21 quinn
271 * Added record packing to the search request
273 * Revision 1.10 1995/03/27 08:34:24 quinn
274 * Added dynamic server functionality.
275 * Released bindings to session.c (is now redundant)
277 * Revision 1.9 1995/03/22 15:01:26 quinn
278 * Adjusting record packing.
280 * Revision 1.8 1995/03/22 10:13:21 quinn
281 * Working on record packer
283 * Revision 1.7 1995/03/21 15:53:31 quinn
286 * Revision 1.6 1995/03/21 12:30:09 quinn
287 * Beginning to add support for record packing.
289 * Revision 1.5 1995/03/17 10:44:13 quinn
290 * Added catch of null-string in makediagrec
292 * Revision 1.4 1995/03/17 10:18:08 quinn
293 * Added memory management.
295 * Revision 1.3 1995/03/16 17:42:39 quinn
298 * Revision 1.2 1995/03/16 13:29:01 quinn
299 * Partitioned server.
301 * Revision 1.1 1995/03/15 16:02:10 quinn
302 * Modded session.c to seshigh.c
307 * Frontend server logic.
309 * This code receives incoming APDUs, and handles client requests by means
310 * of the backend API.
312 * Some of the code is getting quite involved, compared to simpler servers -
313 * primarily because it is asynchronous both in the communication with
314 * the user and the backend. We think the complexity will pay off in
315 * the form of greater flexibility when more asynchronous facilities
318 * Memory management has become somewhat involved. In the simple case, where
319 * only one PDU is pending at a time, it will simply reuse the same memory,
320 * once it has found its working size. When we enable multiple concurrent
321 * operations, perhaps even with multiple parallel calls to the backend, it
322 * will maintain a pool of buffers for encoding and decoding, trying to
323 * minimize memory allocation/deallocation during normal operation.
325 * TODOs include (and will be done in order of public interest):
327 * Support for EXPLAIN - provide simple meta-database system.
328 * Support for access control.
329 * Support for resource control.
330 * Support for extended services - primarily Item Order.
331 * Rest of Z39.50-1994
346 #include <comstack.h>
353 #include <statserv.h>
357 static int process_request(association *assoc, request *req, char **msg);
358 void backend_response(IOCHAN i, int event);
359 static int process_response(association *assoc, request *req, Z_APDU *res);
360 static Z_APDU *process_initRequest(association *assoc, request *reqb);
361 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
363 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
364 bend_search_rr *bsrr, int *fd);
365 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
367 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd);
368 static Z_APDU *process_sortRequest(association *assoc, request *reqb, int *fd);
369 static void process_close(association *assoc, request *reqb);
370 void save_referenceId (request *reqb, Z_ReferenceId *refid);
371 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
373 static int bend_default_scan (void *handle, bend_scan_rr *rr);
375 static FILE *apduf = 0; /* for use in static mode */
376 static statserv_options_block *control_block = 0;
378 /* Chas: Added in from DALI */
379 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
380 /* Chas: End of addition from DALI */
383 * Create and initialize a new association-handle.
384 * channel : iochannel for the current line.
385 * link : communications channel.
386 * Returns: 0 or a new association handle.
388 association *create_association(IOCHAN channel, COMSTACK link)
393 control_block = statserv_getcontrol();
394 if (!(anew = (association *)xmalloc(sizeof(*anew))))
396 anew->client_chan = channel;
397 anew->client_link = link;
398 if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
399 !(anew->encode = odr_createmem(ODR_ENCODE)))
401 if (*control_block->apdufile)
406 strcpy(filename, control_block->apdufile);
407 if (!(anew->print = odr_createmem(ODR_PRINT)))
409 if (*control_block->apdufile != '-')
411 strcpy(filename, control_block->apdufile);
412 if (!control_block->dynamic)
416 if (!(apduf = fopen(filename, "w")))
418 yaz_log(LOG_WARN|LOG_ERRNO, "%s", filename);
421 setvbuf(apduf, 0, _IONBF, 0);
427 sprintf(filename + strlen(filename), ".%d", getpid());
428 if (!(f = fopen(filename, "w")))
430 yaz_log(LOG_WARN|LOG_ERRNO, "%s", filename);
433 setvbuf(f, 0, _IONBF, 0);
435 odr_setprint(anew->print, f);
440 anew->input_buffer = 0;
441 anew->input_buffer_len = 0;
443 anew->state = ASSOC_NEW;
444 request_initq(&anew->incoming);
445 request_initq(&anew->outgoing);
446 anew->proto = cs_getproto(link);
451 * Free association and release resources.
453 void destroy_association(association *h)
455 odr_destroy(h->decode);
456 odr_destroy(h->encode);
458 odr_destroy(h->print);
460 xfree(h->input_buffer);
462 bend_close(h->backend);
463 while (request_deq(&h->incoming));
464 while (request_deq(&h->outgoing));
465 request_delq(&h->incoming);
466 request_delq(&h->outgoing);
468 if (control_block && control_block->one_shot)
472 static void do_close_req(association *a, int reason, char *message,
476 Z_Close *cls = zget_Close(a->encode);
478 /* Purge request queue */
479 while (request_deq(&a->incoming));
480 while (request_deq(&a->outgoing));
483 yaz_log(LOG_LOG, "Sending Close PDU, reason=%d, message=%s",
484 reason, message ? message : "none");
485 apdu.which = Z_APDU_close;
487 *cls->closeReason = reason;
488 cls->diagnosticInformation = message;
489 process_response(a, req, &apdu);
490 iochan_settimeout(a->client_chan, 60);
494 yaz_log(LOG_DEBUG, "v2 client. No Close PDU");
495 iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
497 a->state = ASSOC_DEAD;
500 static void do_close(association *a, int reason, char *message)
502 do_close_req (a, reason, message, request_get(&a->outgoing));
506 * This is where PDUs from the client are read and the further
507 * processing is initiated. Flow of control moves down through the
508 * various process_* functions below, until the encoded result comes back up
509 * to the output handler in here.
511 * h : the I/O channel that has an outstanding event.
512 * event : the current outstanding event.
514 void ir_session(IOCHAN h, int event)
517 association *assoc = (association *)iochan_getdata(h);
518 COMSTACK conn = assoc->client_link;
521 assert(h && conn && assoc);
522 if (event == EVENT_TIMEOUT)
524 if (assoc->state != ASSOC_UP)
526 yaz_log(LOG_LOG, "Final timeout - closing connection.");
528 destroy_association(assoc);
533 yaz_log(LOG_LOG, "Session idle too long. Sending close.");
534 do_close(assoc, Z_Close_lackOfActivity, 0);
538 if (event & EVENT_INPUT || event & EVENT_WORK) /* input */
540 if (event & EVENT_INPUT)
542 yaz_log(LOG_DEBUG, "ir_session (input)");
543 assert(assoc && conn);
544 /* We aren't speaking to this fellow */
545 if (assoc->state == ASSOC_DEAD)
547 yaz_log(LOG_LOG, "Closed connection after reject");
549 destroy_association(assoc);
553 if ((res = cs_get(conn, &assoc->input_buffer,
554 &assoc->input_buffer_len)) <= 0)
556 yaz_log(LOG_LOG, "Connection closed by client");
558 destroy_association(assoc);
562 else if (res == 1) /* incomplete read - wait for more */
564 if (cs_more(conn)) /* more stuff - call us again later, please */
565 iochan_setevent(h, EVENT_INPUT);
567 /* we got a complete PDU. Let's decode it */
568 yaz_log(LOG_DEBUG, "Got PDU, %d bytes", res);
569 req = request_get(&assoc->incoming); /* get a new request structure */
570 odr_reset(assoc->decode);
571 odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
572 if (!z_APDU(assoc->decode, &req->request, 0, 0))
574 yaz_log(LOG_LOG, "ODR error on incoming PDU: %s [near byte %d] ",
575 odr_errmsg(odr_geterror(assoc->decode)),
576 odr_offset(assoc->decode));
577 yaz_log(LOG_LOG, "PDU dump:");
578 odr_dumpBER(log_file(), assoc->input_buffer, res);
579 do_close(assoc, Z_Close_protocolError, "Malformed package");
582 req->request_mem = odr_extract_mem(assoc->decode);
583 if (assoc->print && !z_APDU(assoc->print, &req->request, 0, 0))
585 yaz_log(LOG_WARN, "ODR print error: %s",
586 odr_errmsg(odr_geterror(assoc->print)));
587 odr_reset(assoc->print);
589 request_enq(&assoc->incoming, req);
592 /* can we do something yet? */
593 req = request_head(&assoc->incoming);
594 if (req->state == REQUEST_IDLE)
597 request_deq(&assoc->incoming);
598 if (process_request(assoc, req, &msg) < 0)
599 do_close_req(assoc, Z_Close_systemProblem, msg, req);
602 if (event & EVENT_OUTPUT)
604 request *req = request_head(&assoc->outgoing);
606 yaz_log(LOG_DEBUG, "ir_session (output)");
607 req->state = REQUEST_PENDING;
608 switch (res = cs_put(conn, req->response, req->len_response))
611 yaz_log(LOG_LOG, "Connection closed by client");
613 destroy_association(assoc);
616 case 0: /* all sent - release the request structure */
617 yaz_log(LOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
618 nmem_destroy(req->request_mem);
619 request_deq(&assoc->outgoing);
620 request_release(req);
621 if (!request_head(&assoc->outgoing))
622 iochan_clearflag(h, EVENT_OUTPUT);
624 /* value of 1 -- partial send -- is simply ignored */
627 if (event & EVENT_EXCEPT)
629 yaz_log(LOG_DEBUG, "ir_session (exception)");
631 destroy_association(assoc);
637 * Initiate request processing.
639 static int process_request(association *assoc, request *req, char **msg)
645 *msg = "Unknown Error";
646 assert(req && req->state == REQUEST_IDLE);
647 switch (req->request->which)
649 case Z_APDU_initRequest:
650 res = process_initRequest(assoc, req); break;
651 case Z_APDU_searchRequest:
652 res = process_searchRequest(assoc, req, &fd); break;
653 case Z_APDU_presentRequest:
654 res = process_presentRequest(assoc, req, &fd); break;
655 case Z_APDU_scanRequest:
656 if (assoc->bend_scan)
657 res = process_scanRequest(assoc, req, &fd);
660 *msg = "Cannot handle Scan APDU";
664 case Z_APDU_extendedServicesRequest:
665 if (assoc->bend_esrequest)
666 res = process_ESRequest(assoc, req, &fd);
669 *msg = "Cannot handle Extended Services APDU";
673 case Z_APDU_sortRequest:
674 if (assoc->bend_sort)
675 res = process_sortRequest(assoc, req, &fd);
678 *msg = "Cannot handle Sort APDU";
683 process_close(assoc, req);
685 case Z_APDU_deleteResultSetRequest:
686 if (assoc->bend_delete)
687 res = process_deleteRequest(assoc, req, &fd);
690 *msg = "Cannot handle Delete APDU";
695 *msg = "Bad APDU received";
700 yaz_log(LOG_DEBUG, " result immediately available");
701 retval = process_response(assoc, req, res);
705 yaz_log(LOG_DEBUG, " result unavailble");
708 else /* no result yet - one will be provided later */
712 /* Set up an I/O handler for the fd supplied by the backend */
714 yaz_log(LOG_DEBUG, " establishing handler for result");
715 req->state = REQUEST_PENDING;
716 if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT)))
718 iochan_setdata(chan, assoc);
725 * Handle message from the backend.
727 void backend_response(IOCHAN i, int event)
729 association *assoc = (association *)iochan_getdata(i);
730 request *req = request_head(&assoc->incoming);
734 yaz_log(LOG_DEBUG, "backend_response");
735 assert(assoc && req && req->state != REQUEST_IDLE);
736 /* determine what it is we're waiting for */
737 switch (req->request->which)
739 case Z_APDU_searchRequest:
740 res = response_searchRequest(assoc, req, 0, &fd); break;
742 case Z_APDU_presentRequest:
743 res = response_presentRequest(assoc, req, 0, &fd); break;
744 case Z_APDU_scanRequest:
745 res = response_scanRequest(assoc, req, 0, &fd); break;
748 yaz_log(LOG_WARN, "Serious programmer's lapse or bug");
751 if ((res && process_response(assoc, req, res) < 0) || fd < 0)
753 yaz_log(LOG_LOG, "Fatal error when talking to backend");
754 do_close(assoc, Z_Close_systemProblem, 0);
758 else if (!res) /* no result yet - try again later */
760 yaz_log(LOG_DEBUG, " no result yet");
761 iochan_setfd(i, fd); /* in case fd has changed */
766 * Encode response, and transfer the request structure to the outgoing queue.
768 static int process_response(association *assoc, request *req, Z_APDU *res)
770 odr_setbuf(assoc->encode, req->response, req->size_response, 1);
771 if (!z_APDU(assoc->encode, &res, 0, 0))
773 yaz_log(LOG_WARN, "ODR error when encoding response: %s",
774 odr_errmsg(odr_geterror(assoc->decode)));
775 odr_reset(assoc->encode);
778 req->response = odr_getbuf(assoc->encode, &req->len_response,
779 &req->size_response);
780 odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
781 if (assoc->print && !z_APDU(assoc->print, &res, 0, 0))
783 yaz_log(LOG_WARN, "ODR print error: %s",
784 odr_errmsg(odr_geterror(assoc->print)));
785 odr_reset(assoc->print);
787 odr_reset(assoc->encode);
788 req->state = REQUEST_IDLE;
789 request_enq(&assoc->outgoing, req);
790 /* turn the work over to the ir_session handler */
791 iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
792 /* Is there more work to be done? give that to the input handler too */
794 if (request_head(&assoc->incoming))
796 yaz_log (LOG_DEBUG, "more work to be done");
797 iochan_setevent(assoc->client_chan, EVENT_WORK);
804 * Handle init request.
805 * At the moment, we don't check the options
806 * anywhere else in the code - we just try not to do anything that would
807 * break a naive client. We'll toss 'em into the association block when
808 * we need them there.
810 static Z_APDU *process_initRequest(association *assoc, request *reqb)
812 Z_InitRequest *req = reqb->request->u.initRequest;
813 Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
814 Z_InitResponse *resp = apdu->u.initResponse;
815 bend_initrequest binitreq;
816 bend_initresult *binitres;
819 yaz_log(LOG_LOG, "Got initRequest");
820 if (req->implementationId)
821 yaz_log(LOG_LOG, "Id: %s", req->implementationId);
822 if (req->implementationName)
823 yaz_log(LOG_LOG, "Name: %s", req->implementationName);
824 if (req->implementationVersion)
825 yaz_log(LOG_LOG, "Version: %s", req->implementationVersion);
827 binitreq.stream = assoc->encode;
828 binitreq.configname = "default-config";
829 binitreq.auth = req->idAuthentication;
830 binitreq.referenceId = req->referenceId;
831 binitreq.implementation_version = 0;
832 binitreq.implementation_name = 0;
833 binitreq.bend_sort = NULL;
834 binitreq.bend_search = NULL;
835 binitreq.bend_present = NULL;
836 binitreq.bend_esrequest = NULL;
837 binitreq.bend_delete = NULL;
838 binitreq.bend_scan = bend_default_scan;
839 if (!(binitres = bend_init(&binitreq)))
841 yaz_log(LOG_WARN, "Bad response from backend.");
845 assoc->backend = binitres->handle;
846 if ((assoc->bend_sort = (int (*)())binitreq.bend_sort))
847 yaz_log (LOG_DEBUG, "Sort handler installed");
848 if ((assoc->bend_search = (int (*)())binitreq.bend_search))
849 yaz_log (LOG_DEBUG, "Search handler installed");
850 if ((assoc->bend_present = (int (*)())binitreq.bend_present))
851 yaz_log (LOG_DEBUG, "Present handler installed");
852 if ((assoc->bend_esrequest = (int (*)())binitreq.bend_esrequest))
853 yaz_log (LOG_DEBUG, "ESRequest handler installed");
854 if ((assoc->bend_delete = (int (*)())binitreq.bend_delete))
855 yaz_log (LOG_DEBUG, "Delete handler installed");
856 if ((assoc->bend_scan = (int (*)())binitreq.bend_scan))
857 yaz_log (LOG_DEBUG, "Scan handler installed");
859 resp->referenceId = req->referenceId;
861 /* let's tell the client what we can do */
862 if (ODR_MASK_GET(req->options, Z_Options_search))
864 ODR_MASK_SET(resp->options, Z_Options_search);
865 strcat(options, "srch");
867 if (ODR_MASK_GET(req->options, Z_Options_present))
869 ODR_MASK_SET(resp->options, Z_Options_present);
870 strcat(options, " prst");
872 if (ODR_MASK_GET(req->options, Z_Options_delSet) && binitreq.bend_delete)
874 ODR_MASK_SET(resp->options, Z_Options_delSet);
875 strcat(options, " del");
877 if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
878 binitreq.bend_esrequest)
880 ODR_MASK_SET(resp->options, Z_Options_extendedServices);
881 strcat (options, " extendedServices");
883 if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
885 ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
886 strcat(options, " namedresults");
888 if (ODR_MASK_GET(req->options, Z_Options_scan) && binitreq.bend_scan)
890 ODR_MASK_SET(resp->options, Z_Options_scan);
891 strcat(options, " scan");
893 if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
895 ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
896 strcat(options, " concurop");
898 if (ODR_MASK_GET(req->options, Z_Options_sort) && binitreq.bend_sort)
900 ODR_MASK_SET(resp->options, Z_Options_sort);
901 strcat(options, " sort");
903 if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
905 ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
906 assoc->version = 2; /* 1 & 2 are equivalent */
908 if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
910 ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
913 if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
915 ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
918 yaz_log(LOG_LOG, "Negotiated to v%d: %s", assoc->version, options);
919 assoc->maximumRecordSize = *req->maximumRecordSize;
920 if (assoc->maximumRecordSize > control_block->maxrecordsize)
921 assoc->maximumRecordSize = control_block->maxrecordsize;
922 assoc->preferredMessageSize = *req->preferredMessageSize;
923 if (assoc->preferredMessageSize > assoc->maximumRecordSize)
924 assoc->preferredMessageSize = assoc->maximumRecordSize;
925 resp->preferredMessageSize = &assoc->preferredMessageSize;
926 resp->maximumRecordSize = &assoc->maximumRecordSize;
928 resp->implementationName = "Index Data/YAZ Generic Frontend Server";
930 if (binitreq.implementation_name)
933 odr_malloc (assoc->encode,
934 strlen(binitreq.implementation_name) + 3 +
935 strlen(resp->implementationName));
936 sprintf (nv, "%s %s",
937 resp->implementationName, binitreq.implementation_name);
938 resp->implementationName = nv;
940 if (binitreq.implementation_version)
943 odr_malloc (assoc->encode,
944 strlen(binitreq.implementation_version) + 3 +
945 strlen(resp->implementationVersion));
946 sprintf (nv, "%s %s",
947 resp->implementationVersion, binitreq.implementation_version);
948 resp->implementationVersion = nv;
951 if (binitres->errcode)
953 yaz_log(LOG_LOG, "Connection rejected by backend.");
955 assoc->state = ASSOC_DEAD;
958 assoc->state = ASSOC_UP;
963 * These functions should be merged.
966 static void set_addinfo (Z_DefaultDiagFormat *dr, char *addinfo)
969 dr->which = Z_DefaultDiagFormat_v2Addinfo;
970 dr->u.v2Addinfo = addinfo ? addinfo : "";
972 dr->which = Z_DiagForm_v2AddInfo;
973 dr->addinfo = addinfo ? addinfo : "";
978 * nonsurrogate diagnostic record.
980 static Z_Records *diagrec(association *assoc, int error, char *addinfo)
983 Z_Records *rec = (Z_Records *)
984 odr_malloc (assoc->encode, sizeof(*rec));
987 odr_malloc (assoc->encode, sizeof(*err));
988 Z_DiagRec *drec = (Z_DiagRec *)
989 odr_malloc (assoc->encode, sizeof(*drec));
990 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
991 odr_malloc (assoc->encode, sizeof(*dr));
993 bib1.proto = assoc->proto;
994 bib1.oclass = CLASS_DIAGSET;
995 bib1.value = VAL_BIB1;
997 yaz_log(LOG_DEBUG, "Diagnostic: %d -- %s", error, addinfo ? addinfo :
1000 rec->which = Z_Records_NSD;
1002 rec->u.nonSurrogateDiagnostic = dr;
1004 rec->u.nonSurrogateDiagnostic = drec;
1005 drec->which = Z_DiagRec_defaultFormat;
1006 drec->u.defaultFormat = dr;
1008 dr->diagnosticSetId =
1009 odr_oiddup (assoc->encode, oid_ent_to_oid(&bib1, oid));
1010 dr->condition = err;
1011 set_addinfo (dr, addinfo);
1016 * surrogate diagnostic.
1018 static Z_NamePlusRecord *surrogatediagrec(association *assoc, char *dbname,
1019 int error, char *addinfo)
1022 Z_NamePlusRecord *rec = (Z_NamePlusRecord *)
1023 odr_malloc (assoc->encode, sizeof(*rec));
1024 int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
1026 Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
1027 Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
1028 odr_malloc (assoc->encode, sizeof(*dr));
1030 bib1.proto = assoc->proto;
1031 bib1.oclass = CLASS_DIAGSET;
1032 bib1.value = VAL_BIB1;
1034 yaz_log(LOG_DEBUG, "SurrogateDiagnotic: %d -- %s", error, addinfo);
1036 rec->databaseName = dbname;
1037 rec->which = Z_NamePlusRecord_surrogateDiagnostic;
1038 rec->u.surrogateDiagnostic = drec;
1039 drec->which = Z_DiagRec_defaultFormat;
1040 drec->u.defaultFormat = dr;
1041 dr->diagnosticSetId = odr_oiddup (assoc->encode,
1042 oid_ent_to_oid(&bib1, oid));
1043 dr->condition = err;
1044 set_addinfo (dr, addinfo);
1050 * multiple nonsurrogate diagnostics.
1052 static Z_DiagRecs *diagrecs(association *assoc, int error, char *addinfo)
1055 Z_DiagRecs *recs = (Z_DiagRecs *)odr_malloc (assoc->encode, sizeof(*recs));
1056 int *err = (int *)odr_malloc (assoc->encode, sizeof(*err));
1058 Z_DiagRec **recp = (Z_DiagRec **)odr_malloc (assoc->encode, sizeof(*recp));
1059 Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
1060 Z_DefaultDiagFormat *rec = (Z_DefaultDiagFormat *)odr_malloc (assoc->encode, sizeof(*rec));
1062 yaz_log(LOG_DEBUG, "DiagRecs: %d -- %s", error, addinfo ? addinfo : "");
1063 bib1.proto = assoc->proto;
1064 bib1.oclass = CLASS_DIAGSET;
1065 bib1.value = VAL_BIB1;
1068 recs->num_diagRecs = 1;
1069 recs->diagRecs = recp;
1071 drec->which = Z_DiagRec_defaultFormat;
1072 drec->u.defaultFormat = rec;
1074 rec->diagnosticSetId = odr_oiddup (assoc->encode,
1075 oid_ent_to_oid(&bib1, oid));
1076 rec->condition = err;
1079 rec->which = Z_DefaultDiagFormat_v2Addinfo;
1080 rec->u.v2Addinfo = addinfo ? addinfo : "";
1082 rec->which = Z_DiagForm_v2AddInfo;
1083 rec->addinfo = addinfo ? addinfo : "";
1088 static Z_Records *pack_records(association *a, char *setname, int start,
1089 int *num, Z_RecordComposition *comp,
1090 int *next, int *pres, oid_value format,
1091 Z_ReferenceId *referenceId)
1093 int recno, total_length = 0, toget = *num, dumped_records = 0;
1094 Z_Records *records =
1095 (Z_Records *) odr_malloc (a->encode, sizeof(*records));
1096 Z_NamePlusRecordList *reclist =
1097 (Z_NamePlusRecordList *) odr_malloc (a->encode, sizeof(*reclist));
1098 Z_NamePlusRecord **list =
1099 (Z_NamePlusRecord **) odr_malloc (a->encode, sizeof(*list) * toget);
1101 records->which = Z_Records_DBOSD;
1102 records->u.databaseOrSurDiagnostics = reclist;
1103 reclist->num_records = 0;
1104 reclist->records = list;
1105 *pres = Z_PRES_SUCCESS;
1109 yaz_log(LOG_LOG, "Request to pack %d+%d", start, toget);
1110 yaz_log(LOG_DEBUG, "pms=%d, mrs=%d", a->preferredMessageSize,
1111 a->maximumRecordSize);
1112 for (recno = start; reclist->num_records < toget; recno++)
1114 bend_fetchrequest freq;
1115 bend_fetchresult *fres;
1116 Z_NamePlusRecord *thisrec;
1117 int this_length = 0;
1119 * we get the number of bytes allocated on the stream before any
1120 * allocation done by the backend - this should give us a reasonable
1121 * idea of the total size of the data so far.
1123 total_length = odr_total(a->encode) - dumped_records;
1124 freq.setname = setname;
1125 freq.number = recno;
1127 freq.format = format;
1128 freq.stream = a->encode;
1129 freq.surrogate_flag = 0;
1130 freq.referenceId = referenceId;
1131 if (!(fres = bend_fetch(a->backend, &freq, 0)))
1133 *pres = Z_PRES_FAILURE;
1134 return diagrec(a, 2, "Backend interface problem");
1136 /* backend should be able to signal whether error is system-wide
1137 or only pertaining to current record */
1140 if (!freq.surrogate_flag)
1142 *pres = Z_PRES_FAILURE;
1143 return diagrec(a, fres->errcode, fres->errstring);
1145 reclist->records[reclist->num_records] =
1146 surrogatediagrec(a, fres->basename, fres->errcode,
1148 reclist->num_records++;
1149 *next = fres->last_in_set ? 0 : recno + 1;
1153 this_length = fres->len;
1155 this_length = odr_total(a->encode) - total_length;
1156 yaz_log(LOG_DEBUG, " fetched record, len=%d, total=%d",
1157 this_length, total_length);
1158 if (this_length + total_length > a->preferredMessageSize)
1160 /* record is small enough, really */
1161 if (this_length <= a->preferredMessageSize)
1163 yaz_log(LOG_DEBUG, " Dropped last normal-sized record");
1164 *pres = Z_PRES_PARTIAL_2;
1167 /* record can only be fetched by itself */
1168 if (this_length < a->maximumRecordSize)
1170 yaz_log(LOG_DEBUG, " Record > prefmsgsz");
1173 yaz_log(LOG_DEBUG, " Dropped it");
1174 reclist->records[reclist->num_records] =
1175 surrogatediagrec(a, fres->basename, 16, 0);
1176 reclist->num_records++;
1177 *next = fres->last_in_set ? 0 : recno + 1;
1178 dumped_records += this_length;
1182 else /* too big entirely */
1184 yaz_log(LOG_DEBUG, "Record > maxrcdsz");
1185 reclist->records[reclist->num_records] =
1186 surrogatediagrec(a, fres->basename, 17, 0);
1187 reclist->num_records++;
1188 *next = fres->last_in_set ? 0 : recno + 1;
1189 dumped_records += this_length;
1194 if (!(thisrec = (Z_NamePlusRecord *)
1195 odr_malloc(a->encode, sizeof(*thisrec))))
1197 if (!(thisrec->databaseName = (char *)odr_malloc(a->encode,
1198 strlen(fres->basename) + 1)))
1200 strcpy(thisrec->databaseName, fres->basename);
1201 thisrec->which = Z_NamePlusRecord_databaseRecord;
1202 thisrec->u.databaseRecord = z_ext_record(a->encode, fres->format,
1203 fres->record, fres->len);
1204 if (!thisrec->u.databaseRecord)
1206 reclist->records[reclist->num_records] = thisrec;
1207 reclist->num_records++;
1208 *next = fres->last_in_set ? 0 : recno + 1;
1210 *num = reclist->num_records;
1214 static Z_APDU *process_searchRequest(association *assoc, request *reqb,
1217 Z_SearchRequest *req = reqb->request->u.searchRequest;
1218 bend_search_rr *bsrr =
1219 (bend_search_rr *)nmem_malloc (reqb->request_mem, sizeof(*bsrr));
1221 yaz_log(LOG_LOG, "Got SearchRequest.");
1223 bsrr->request = reqb;
1224 bsrr->association = assoc;
1225 bsrr->referenceId = req->referenceId;
1226 save_referenceId (reqb, bsrr->referenceId);
1228 yaz_log (LOG_LOG, "ResultSet '%s'", req->resultSetName);
1229 if (req->databaseNames)
1232 for (i = 0; i < req->num_databaseNames; i++)
1233 yaz_log (LOG_LOG, "Database '%s'", req->databaseNames[i]);
1235 switch (req->query->which)
1237 case Z_Query_type_1: case Z_Query_type_101:
1238 log_rpn_query (req->query->u.type_1);
1240 if (assoc->bend_search)
1242 bsrr->setname = req->resultSetName;
1243 bsrr->replace_set = *req->replaceIndicator;
1244 bsrr->num_bases = req->num_databaseNames;
1245 bsrr->basenames = req->databaseNames;
1246 bsrr->query = req->query;
1247 bsrr->stream = assoc->encode;
1248 bsrr->decode = assoc->decode;
1251 bsrr->errstring = NULL;
1252 ((int (*)(void *, bend_search_rr *))(assoc->bend_search))
1253 (assoc->backend, bsrr);
1259 bend_searchrequest bsrq;
1260 bend_searchresult *bsrt;
1262 bsrq.setname = req->resultSetName;
1263 bsrq.replace_set = *req->replaceIndicator;
1264 bsrq.num_bases = req->num_databaseNames;
1265 bsrq.basenames = req->databaseNames;
1266 bsrq.query = req->query;
1267 bsrq.referenceId = req->referenceId;
1268 bsrq.stream = assoc->encode;
1269 bsrq.decode = assoc->decode;
1270 if (!(bsrt = bend_search (assoc->backend, &bsrq, fd)))
1272 bsrr->hits = bsrt->hits;
1273 bsrr->errcode = bsrt->errcode;
1274 bsrr->errstring = bsrt->errstring;
1276 return response_searchRequest(assoc, reqb, bsrr, fd);
1279 int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
1282 * Prepare a searchresponse based on the backend results. We probably want
1283 * to look at making the fetching of records nonblocking as well, but
1284 * so far, we'll keep things simple.
1285 * If bsrt is null, that means we're called in response to a communications
1286 * event, and we'll have to get the response for ourselves.
1288 static Z_APDU *response_searchRequest(association *assoc, request *reqb,
1289 bend_search_rr *bsrt, int *fd)
1291 Z_SearchRequest *req = reqb->request->u.searchRequest;
1292 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1293 Z_SearchResponse *resp = (Z_SearchResponse *)
1294 odr_malloc (assoc->encode, sizeof(*resp));
1295 int *nulint = (int *)odr_malloc (assoc->encode, sizeof(*nulint));
1296 bool_t *sr = (bool_t *)odr_malloc (assoc->encode, sizeof(*sr));
1297 int *next = (int *)odr_malloc (assoc->encode, sizeof(*next));
1298 int *none = (int *)odr_malloc (assoc->encode, sizeof(*none));
1305 apdu->which = Z_APDU_searchResponse;
1306 apdu->u.searchResponse = resp;
1307 resp->referenceId = req->referenceId;
1308 resp->additionalSearchInfo = 0;
1309 resp->otherInfo = 0;
1311 if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
1313 yaz_log(LOG_FATAL, "Bad result from backend");
1316 else if (bsrt->errcode)
1318 resp->records = diagrec(assoc, bsrt->errcode, bsrt->errstring);
1319 resp->resultCount = nulint;
1320 resp->numberOfRecordsReturned = nulint;
1321 resp->nextResultSetPosition = nulint;
1322 resp->searchStatus = nulint;
1323 resp->resultSetStatus = none;
1324 resp->presentStatus = 0;
1328 int *toget = (int *)odr_malloc (assoc->encode, sizeof(*toget));
1329 int *presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
1330 Z_RecordComposition comp, *compp = 0;
1335 resp->resultCount = &bsrt->hits;
1337 comp.which = Z_RecordComp_simple;
1338 /* how many records does the user agent want, then? */
1339 if (bsrt->hits <= *req->smallSetUpperBound)
1341 *toget = bsrt->hits;
1342 if ((comp.u.simple = req->smallSetElementSetNames))
1345 else if (bsrt->hits < *req->largeSetLowerBound)
1347 *toget = *req->mediumSetPresentNumber;
1348 if (*toget > bsrt->hits)
1349 *toget = bsrt->hits;
1350 if ((comp.u.simple = req->mediumSetElementSetNames))
1356 if (*toget && !resp->records)
1361 if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
1362 prefformat->oclass != CLASS_RECSYN)
1365 form = prefformat->value;
1366 resp->records = pack_records(assoc, req->resultSetName, 1,
1367 toget, compp, next, presst, form, req->referenceId);
1370 resp->numberOfRecordsReturned = toget;
1371 resp->nextResultSetPosition = next;
1372 resp->searchStatus = sr;
1373 resp->resultSetStatus = 0;
1374 resp->presentStatus = presst;
1378 if (*resp->resultCount)
1380 resp->numberOfRecordsReturned = nulint;
1381 resp->nextResultSetPosition = next;
1382 resp->searchStatus = sr;
1383 resp->resultSetStatus = 0;
1384 resp->presentStatus = 0;
1391 * Maybe we got a little over-friendly when we designed bend_fetch to
1392 * get only one record at a time. Some backends can optimise multiple-record
1393 * fetches, and at any rate, there is some overhead involved in
1394 * all that selecting and hopping around. Problem is, of course, that the
1395 * frontend can't know ahead of time how many records it'll need to
1396 * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
1397 * is downright lousy as a bulk data transfer protocol.
1399 * To start with, we'll do the fetching of records from the backend
1400 * in one operation: To save some trips in and out of the event-handler,
1401 * and to simplify the interface to pack_records. At any rate, asynch
1402 * operation is more fun in operations that have an unpredictable execution
1403 * speed - which is normally more true for search than for present.
1405 static Z_APDU *process_presentRequest(association *assoc, request *reqb,
1408 Z_PresentRequest *req = reqb->request->u.presentRequest;
1412 Z_PresentResponse *resp;
1417 yaz_log(LOG_LOG, "Got PresentRequest.");
1419 if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)) ||
1420 prefformat->oclass != CLASS_RECSYN)
1423 form = prefformat->value;
1424 if (assoc->bend_present)
1426 bend_present_rr *bprr = (bend_present_rr *)
1427 nmem_malloc (reqb->request_mem, sizeof(*bprr));
1428 bprr->setname = req->resultSetId;
1429 bprr->start = *req->resultSetStartPoint;
1430 bprr->number = *req->numberOfRecordsRequested;
1431 bprr->format = form;
1432 bprr->comp = req->recordComposition;
1433 bprr->referenceId = req->referenceId;
1434 bprr->stream = assoc->encode;
1435 bprr->request = reqb;
1436 bprr->association = assoc;
1438 bprr->errstring = NULL;
1439 ((int (*)(void *, bend_present_rr *))(*assoc->bend_present))(
1440 assoc->backend, bprr);
1445 apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1446 resp = (Z_PresentResponse *)odr_malloc (assoc->encode, sizeof(*resp));
1447 presst = (int *)odr_malloc (assoc->encode, sizeof(*presst));
1448 next = (int *)odr_malloc (assoc->encode, sizeof(*next));
1449 num = (int *)odr_malloc (assoc->encode, sizeof(*num));
1452 *num = *req->numberOfRecordsRequested;
1454 apdu->which = Z_APDU_presentResponse;
1455 apdu->u.presentResponse = resp;
1456 resp->referenceId = req->referenceId;
1457 resp->otherInfo = 0;
1460 pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
1461 num, req->recordComposition, next, presst, form,
1465 resp->numberOfRecordsReturned = num;
1466 resp->presentStatus = presst;
1467 resp->nextResultSetPosition = next;
1472 static int bend_default_scan (void *handle, bend_scan_rr *rr)
1474 bend_scanrequest srq;
1475 bend_scanresult *srs;
1477 srq.num_bases = rr->num_bases;
1478 srq.basenames = rr->basenames;
1479 srq.attributeset = rr->attributeset;
1480 srq.referenceId = rr->referenceId;
1481 srq.term = rr->term;
1482 srq.term_position = rr->term_position;
1483 srq.num_entries = rr->num_entries;
1484 srq.stream = rr->stream;
1486 srs = bend_scan(handle, &srq, 0);
1488 rr->term_position = srs->term_position;
1489 rr->num_entries = srs->num_entries;
1490 rr->entries = srs->entries;
1491 rr->status = srs->status;
1492 rr->errcode = srs->errcode;
1493 rr->errstring = srs->errstring;
1498 * Scan was implemented rather in a hurry, and with support for only the basic
1499 * elements of the service in the backend API. Suggestions are welcome.
1501 static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
1503 Z_ScanRequest *req = reqb->request->u.scanRequest;
1504 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1505 Z_ScanResponse *res = (Z_ScanResponse *)
1506 odr_malloc (assoc->encode, sizeof(*res));
1507 int *scanStatus = (int *)
1508 odr_malloc (assoc->encode, sizeof(*scanStatus));
1509 int *numberOfEntriesReturned = (int *)
1510 odr_malloc (assoc->encode, sizeof(*numberOfEntriesReturned));
1511 Z_ListEntries *ents = (Z_ListEntries *)
1512 odr_malloc (assoc->encode, sizeof(*ents));
1513 Z_DiagRecs *diagrecs_p = NULL;
1517 yaz_log(LOG_LOG, "Got ScanRequest");
1518 *scanStatus = Z_Scan_failure;
1519 *numberOfEntriesReturned = 0;
1521 apdu->which = Z_APDU_scanResponse;
1522 apdu->u.scanResponse = res;
1523 res->referenceId = req->referenceId;
1525 res->scanStatus = scanStatus;
1526 res->numberOfEntriesReturned = numberOfEntriesReturned;
1527 res->positionOfTerm = 0;
1528 res->entries = ents;
1529 ents->num_entries = 0;
1530 ents->entries = NULL;
1531 ents->num_nonsurrogateDiagnostics = 0;
1532 ents->nonsurrogateDiagnostics = NULL;
1533 res->attributeSet = 0;
1536 if (req->attributeSet && (!(attent = oid_getentbyoid(req->attributeSet)) ||
1537 attent->oclass != CLASS_ATTSET
1538 || attent->value != VAL_BIB1))
1539 diagrecs_p = diagrecs(assoc, 121, 0);
1540 else if (req->stepSize && *req->stepSize > 0)
1541 diagrecs_p = diagrecs(assoc, 205, 0);
1544 bend_scan_rr *bsrr = (bend_scan_rr *)
1545 odr_malloc (assoc->encode, sizeof(*bsrr));
1546 if (req->databaseNames)
1549 for (i = 0; i < req->num_databaseNames; i++)
1550 yaz_log (LOG_LOG, "Database '%s'", req->databaseNames[i]);
1552 bsrr->num_bases = req->num_databaseNames;
1553 bsrr->basenames = req->databaseNames;
1554 bsrr->num_entries = *req->numberOfTermsRequested;
1555 bsrr->term = req->termListAndStartPoint;
1556 bsrr->referenceId = req->referenceId;
1557 bsrr->stream = assoc->encode;
1558 if (!(attset = oid_getentbyoid(req->attributeSet)) ||
1559 attset->oclass != CLASS_RECSYN)
1560 bsrr->attributeset = VAL_NONE;
1562 bsrr->attributeset = attset->value;
1563 log_scan_term (req->termListAndStartPoint, attset->value);
1564 bsrr->term_position = req->preferredPositionInResponse ?
1565 *req->preferredPositionInResponse : 1;
1566 ((int (*)(void *, bend_scan_rr *))(*assoc->bend_scan))(assoc->backend,
1569 diagrecs_p = diagrecs(assoc, bsrr->errcode, bsrr->errstring);
1573 Z_Entry **tab = (Z_Entry **)
1574 odr_malloc (assoc->encode, sizeof(*tab) * bsrr->num_entries);
1576 if (bsrr->status == BEND_SCAN_PARTIAL)
1577 *scanStatus = Z_Scan_partial_5;
1579 *scanStatus = Z_Scan_success;
1580 ents->entries = tab;
1581 ents->num_entries = bsrr->num_entries;
1582 res->numberOfEntriesReturned = &ents->num_entries;
1583 res->positionOfTerm = &bsrr->term_position;
1584 for (i = 0; i < bsrr->num_entries; i++)
1590 tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
1591 if (bsrr->entries[i].occurrences >= 0)
1593 e->which = Z_Entry_termInfo;
1594 e->u.termInfo = t = (Z_TermInfo *)
1595 odr_malloc(assoc->encode, sizeof(*t));
1596 t->suggestedAttributes = 0;
1598 t->alternativeTerm = 0;
1599 t->byAttributes = 0;
1600 t->otherTermInfo = 0;
1601 t->globalOccurrences = &bsrr->entries[i].occurrences;
1602 t->term = (Z_Term *)
1603 odr_malloc(assoc->encode, sizeof(*t->term));
1604 t->term->which = Z_Term_general;
1605 t->term->u.general = o =
1606 (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
1607 o->buf = (unsigned char *)
1608 odr_malloc(assoc->encode, o->len = o->size =
1609 strlen(bsrr->entries[i].term));
1610 memcpy(o->buf, bsrr->entries[i].term, o->len);
1611 yaz_log(LOG_DEBUG, " term #%d: '%s' (%d)", i,
1612 bsrr->entries[i].term, bsrr->entries[i].occurrences);
1616 Z_DiagRecs *drecs = diagrecs (assoc,
1617 bsrr->entries[i].errcode,
1618 bsrr->entries[i].errstring);
1619 assert (drecs->num_diagRecs == 1);
1620 e->which = Z_Entry_surrogateDiagnostic;
1621 assert (drecs->diagRecs[0]);
1622 e->u.surrogateDiagnostic = drecs->diagRecs[0];
1629 ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
1630 ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
1635 static Z_APDU *process_sortRequest(association *assoc, request *reqb,
1638 Z_SortRequest *req = reqb->request->u.sortRequest;
1639 Z_SortResponse *res = (Z_SortResponse *)
1640 odr_malloc (assoc->encode, sizeof(*res));
1641 bend_sort_rr *bsrr = (bend_sort_rr *)
1642 odr_malloc (assoc->encode, sizeof(*bsrr));
1644 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1646 yaz_log(LOG_LOG, "Got SortRequest.");
1649 bsrr->num_input_setnames = req->num_inputResultSetNames;
1650 bsrr->input_setnames = req->inputResultSetNames;
1652 bsrr->num_input_setnames = req->inputResultSetNames->num_strings;
1653 bsrr->input_setnames = req->inputResultSetNames->strings;
1655 bsrr->referenceId = req->referenceId;
1656 bsrr->output_setname = req->sortedResultSetName;
1657 bsrr->sort_sequence = req->sortSequence;
1658 bsrr->stream = assoc->encode;
1660 bsrr->sort_status = Z_SortStatus_failure;
1662 bsrr->errstring = 0;
1664 ((int (*)(void *, bend_sort_rr *))(*assoc->bend_sort))(assoc->backend,
1667 res->referenceId = bsrr->referenceId;
1668 res->sortStatus = (int *)
1669 odr_malloc (assoc->encode, sizeof(*res->sortStatus));
1670 *res->sortStatus = bsrr->sort_status;
1671 res->resultSetStatus = 0;
1674 Z_DiagRecs *dr = diagrecs (assoc, bsrr->errcode, bsrr->errstring);
1676 res->diagnostics = dr->diagRecs;
1677 res->num_diagnostics = dr->num_diagRecs;
1679 res->diagnostics = dr;
1685 res->num_diagnostics = 0;
1687 res->diagnostics = 0;
1691 apdu->which = Z_APDU_sortResponse;
1692 apdu->u.sortResponse = res;
1696 static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
1699 Z_DeleteResultSetRequest *req = reqb->request->u.deleteResultSetRequest;
1700 Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
1701 odr_malloc (assoc->encode, sizeof(*res));
1702 bend_delete_rr *bdrr = (bend_delete_rr *)
1703 odr_malloc (assoc->encode, sizeof(*bdrr));
1704 Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
1706 yaz_log(LOG_LOG, "Got DeleteRequest.");
1708 bdrr->num_setnames = req->num_resultSetList;
1709 bdrr->setnames = req->resultSetList;
1710 bdrr->stream = assoc->encode;
1711 bdrr->function = *req->deleteFunction;
1712 bdrr->referenceId = req->referenceId;
1714 if (bdrr->num_setnames > 0)
1717 bdrr->statuses = odr_malloc(assoc->encode, sizeof(*bdrr->statuses) *
1718 bdrr->num_setnames);
1719 for (i = 0; i < bdrr->num_setnames; i++)
1720 bdrr->statuses[i] = 0;
1722 ((int (*)(void *, bend_delete_rr *))
1723 (*assoc->bend_delete))(assoc->backend, bdrr);
1725 res->referenceId = req->referenceId;
1727 res->deleteOperationStatus = (int *)
1728 odr_malloc (assoc->encode, sizeof(*res->deleteOperationStatus));
1729 *res->deleteOperationStatus = bdrr->delete_status;
1731 res->deleteListStatuses = 0;
1732 if (bdrr->num_setnames > 0)
1735 res->deleteListStatuses = odr_malloc(assoc->encode,
1736 sizeof(*res->deleteListStatuses));
1737 res->deleteListStatuses->num = bdrr->num_setnames;
1738 res->deleteListStatuses->elements =
1739 odr_malloc (assoc->encode,
1740 sizeof(*res->deleteListStatuses->elements) *
1741 bdrr->num_setnames);
1742 for (i = 0; i<bdrr->num_setnames; i++)
1744 res->deleteListStatuses->elements[i] =
1745 odr_malloc (assoc->encode,
1746 sizeof(**res->deleteListStatuses->elements));
1747 res->deleteListStatuses->elements[i]->status = bdrr->statuses+i;
1748 res->deleteListStatuses->elements[i]->id =
1749 odr_strdup (assoc->encode, bdrr->setnames[i]);
1753 res->numberNotDeleted = 0;
1754 res->bulkStatuses = 0;
1755 res->deleteMessage = 0;
1758 apdu->which = Z_APDU_deleteResultSetResponse;
1759 apdu->u.deleteResultSetResponse = res;
1763 static void process_close(association *assoc, request *reqb)
1765 Z_Close *req = reqb->request->u.close;
1766 static char *reasons[] =
1773 "securityViolation",
1780 yaz_log(LOG_LOG, "Got Close, reason %s, message %s",
1781 reasons[*req->closeReason], req->diagnosticInformation ?
1782 req->diagnosticInformation : "NULL");
1783 if (assoc->version < 3) /* to make do_force respond with close */
1785 do_close_req(assoc, Z_Close_finished,
1786 "Association terminated by client", reqb);
1789 void save_referenceId (request *reqb, Z_ReferenceId *refid)
1793 reqb->len_refid = refid->len;
1794 reqb->refid = (char *)nmem_malloc (reqb->request_mem, refid->len);
1795 memcpy (reqb->refid, refid->buf, refid->len);
1799 reqb->len_refid = 0;
1804 void bend_request_send (bend_association a, bend_request req, Z_APDU *res)
1806 process_response (a, req, res);
1809 bend_request bend_request_mk (bend_association a)
1811 request *nreq = request_get (&a->outgoing);
1812 nreq->request_mem = nmem_create ();
1816 Z_ReferenceId *bend_request_getid (ODR odr, bend_request req)
1821 id = (Odr_oct *)odr_malloc (odr, sizeof(*odr));
1822 id->buf = (unsigned char *)odr_malloc (odr, req->len_refid);
1823 id->len = id->size = req->len_refid;
1824 memcpy (id->buf, req->refid, req->len_refid);
1828 void bend_request_destroy (bend_request *req)
1830 nmem_destroy((*req)->request_mem);
1831 request_release(*req);
1835 int bend_backend_respond (bend_association a, bend_request req)
1839 r = process_request (a, req, &msg);
1841 logf (LOG_WARN, "%s", msg);
1845 void bend_request_setdata(bend_request r, void *p)
1850 void *bend_request_getdata(bend_request r)
1852 return r->clientData;
1855 static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
1857 bend_esrequest_rr esrequest;
1859 Z_ExtendedServicesRequest *req = reqb->request->u.extendedServicesRequest;
1860 Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
1862 Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
1864 yaz_log(LOG_DEBUG,"inside Process esRequest");
1866 esrequest.esr = reqb->request->u.extendedServicesRequest;
1867 esrequest.stream = assoc->encode;
1868 esrequest.errcode = 0;
1869 esrequest.errstring = NULL;
1870 esrequest.request = reqb;
1871 esrequest.association = assoc;
1872 esrequest.referenceId = req->referenceId;
1874 ((int (*)(void *, bend_esrequest_rr *))(*assoc->bend_esrequest))
1875 (assoc->backend, &esrequest);
1877 /* If the response is being delayed, return NULL */
1878 if (esrequest.request == NULL)
1881 resp->referenceId = req->referenceId;
1883 if (esrequest.errcode == -1)
1885 /* Backend service indicates request will be processed */
1886 yaz_log(LOG_DEBUG,"Request could be processed...Accepted !");
1887 *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
1889 else if (esrequest.errcode == 0)
1891 /* Backend service indicates request will be processed */
1892 yaz_log(LOG_DEBUG,"Request could be processed...Done !");
1893 *resp->operationStatus = Z_ExtendedServicesResponse_done;
1897 Z_DiagRecs *diagRecs = diagrecs (assoc, esrequest.errcode,
1898 esrequest.errstring);
1900 /* Backend indicates error, request will not be processed */
1901 yaz_log(LOG_DEBUG,"Request could not be processed...failure !");
1902 *resp->operationStatus = Z_ExtendedServicesResponse_failure;
1903 resp->num_diagnostics = diagRecs->num_diagRecs;
1904 resp->diagnostics = diagRecs->diagRecs;
1906 /* Do something with the members of bend_extendedservice */
1908 yaz_log(LOG_DEBUG,"Send the result apdu");