2 * $Id: zoom-c.c,v 1.13 2001-11-28 23:00:19 adam Exp $
4 * ZOOM layer for C, connections, result sets, queries.
7 #include <yaz/xmalloc.h>
8 #include <yaz/otherinfo.h>
10 #include <yaz/pquery.h>
11 #include <yaz/diagbib1.h>
19 static ZOOM_Event ZOOM_Event_create (int kind)
21 ZOOM_Event event = xmalloc (sizeof(*event));
28 static void ZOOM_Event_destroy (ZOOM_Event event)
33 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
35 // put in back of queue
38 c->m_queue_back->prev = event;
39 assert (c->m_queue_front);
43 assert (!c->m_queue_front);
44 c->m_queue_front = event;
46 event->next = c->m_queue_back;
48 c->m_queue_back = event;
51 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
53 // get from front of queue
54 ZOOM_Event event = c->m_queue_front;
57 assert (c->m_queue_back);
58 c->m_queue_front = event->prev;
61 assert (c->m_queue_back);
62 c->m_queue_front->next = 0;
69 static void clear_error (ZOOM_connection c)
71 c->error = ZOOM_ERROR_NONE;
76 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
78 ZOOM_task *taskp = &c->tasks;
80 taskp = &(*taskp)->next;
81 *taskp = xmalloc (sizeof(**taskp));
82 (*taskp)->running = 0;
83 (*taskp)->which = which;
89 void ZOOM_connection_remove_task (ZOOM_connection c)
91 ZOOM_task task = c->tasks;
95 c->tasks = task->next;
98 case ZOOM_TASK_SEARCH:
99 ZOOM_resultset_destroy (task->u.search.resultset);
101 case ZOOM_TASK_RETRIEVE:
102 ZOOM_resultset_destroy (task->u.retrieve.resultset);
104 case ZOOM_TASK_CONNECT:
113 void ZOOM_connection_remove_tasks (ZOOM_connection c)
116 ZOOM_connection_remove_task(c);
119 static ZOOM_record record_cache_lookup (ZOOM_resultset r,
121 const char *elementSetName);
123 ZOOM_connection ZOOM_connection_create (ZOOM_options options)
125 ZOOM_connection c = xmalloc (sizeof(*c));
129 c->state = STATE_IDLE;
130 c->error = ZOOM_ERROR_NONE;
138 c->options = ZOOM_options_create_with_parent(options);
147 c->odr_in = odr_createmem (ODR_DECODE);
148 c->odr_out = odr_createmem (ODR_ENCODE);
151 c->support_named_resultsets = 0;
153 c->m_queue_front = 0;
158 /* set database names. Take local databases (if set); otherwise
159 take databases given in ZURL (if set); otherwise use Default */
160 static char **set_DatabaseNames (ZOOM_connection con, int *num)
162 char **databaseNames;
165 const char *cp = ZOOM_options_get (con->options, "databaseName");
169 cp = strchr (con->host_port, '/');
176 while ((c = strchr(c, '+')))
184 databaseNames = odr_malloc (con->odr_out, no * sizeof(*databaseNames));
188 c = strchr (cp, '+');
196 /* cp ptr to first char of db name, c is char
198 databaseNames[no] = odr_malloc (con->odr_out, 1+c-cp);
199 memcpy (databaseNames[no], cp, c-cp);
200 databaseNames[no++][c-cp] = '\0';
205 databaseNames[no] = NULL;
207 return databaseNames;
210 ZOOM_connection ZOOM_connection_new (const char *host, int portnum)
212 ZOOM_connection c = ZOOM_connection_create (0);
214 ZOOM_connection_connect (c, host, portnum);
218 void ZOOM_connection_connect(ZOOM_connection c,
219 const char *host, int portnum)
224 val = ZOOM_options_get (c->options, "proxy");
226 c->proxy = xstrdup (val);
233 sprintf (hostn, "%.80s:%d", host, portnum);
234 c->host_port = xstrdup(hostn);
237 c->host_port = xstrdup(host);
239 ZOOM_options_set(c->options, "host", c->host_port);
241 c->async = ZOOM_options_get_bool (c->options, "async", 0);
243 task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
247 while (ZOOM_event (1, &c))
252 ZOOM_query ZOOM_query_create(void)
254 ZOOM_query s = xmalloc (sizeof(*s));
259 s->odr = odr_createmem (ODR_ENCODE);
264 void ZOOM_query_destroy(ZOOM_query s)
270 yaz_log (LOG_DEBUG, "ZOOM_query_destroy count=%d", s->refcount);
271 if (s->refcount == 0)
273 odr_destroy (s->odr);
278 int ZOOM_query_prefix(ZOOM_query s, const char *str)
280 s->query = odr_malloc (s->odr, sizeof(*s->query));
281 s->query->which = Z_Query_type_1;
282 s->query->u.type_1 = p_query_rpn(s->odr, PROTO_Z3950, str);
283 if (!s->query->u.type_1)
288 int ZOOM_query_sortby(ZOOM_query s, const char *criteria)
290 s->sort_spec = yaz_sort_spec (s->odr, criteria);
296 static int do_write(ZOOM_connection c);
298 void ZOOM_connection_destroy(ZOOM_connection c)
305 for (r = c->resultsets; r; r = r->next)
310 odr_destroy (c->odr_in);
311 odr_destroy (c->odr_out);
312 ZOOM_options_destroy (c->options);
313 ZOOM_connection_remove_tasks (c);
314 xfree (c->host_port);
318 void ZOOM_resultset_addref (ZOOM_resultset r)
323 ZOOM_resultset ZOOM_resultset_create ()
325 ZOOM_resultset r = xmalloc (sizeof(*r));
329 r->odr = odr_createmem (ODR_ENCODE);
343 ZOOM_resultset ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
346 ZOOM_query s = ZOOM_query_create();
348 ZOOM_query_prefix (s, q);
350 r = ZOOM_connection_search (c, s);
351 ZOOM_query_destroy (s);
355 ZOOM_resultset ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
357 ZOOM_resultset r = ZOOM_resultset_create ();
361 r->r_sort_spec = q->sort_spec;
362 r->r_query = q->query;
365 r->options = ZOOM_options_create_with_parent(c->options);
367 r->start = ZOOM_options_get_int(r->options, "start", 0);
368 r->count = ZOOM_options_get_int(r->options, "count", 0);
369 r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
370 cp = ZOOM_options_get (r->options, "setname");
372 r->setname = xstrdup (cp);
376 r->next = c->resultsets;
379 task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
380 task->u.search.resultset = r;
381 ZOOM_resultset_addref (r);
387 while (ZOOM_event (1, &c))
393 void ZOOM_resultset_destroy(ZOOM_resultset r)
398 yaz_log (LOG_DEBUG, "destroy r = %p count=%d", r, r->refcount);
399 if (r->refcount == 0)
403 /* remove ourselves from the resultsets in connection */
404 ZOOM_resultset *rp = &r->connection->resultsets;
407 assert (*rp); /* we must be in this list!! */
409 { /* OK, we're here - take us out of it */
416 ZOOM_query_destroy (r->search);
417 ZOOM_options_destroy (r->options);
418 odr_destroy (r->odr);
424 size_t ZOOM_resultset_size (ZOOM_resultset r)
429 static void do_close (ZOOM_connection c)
435 c->state = STATE_IDLE;
438 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
439 int force_sync, int start, int count)
449 task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
450 task->u.retrieve.resultset = r;
451 task->u.retrieve.start = start;
452 task->u.retrieve.count = count;
454 ZOOM_resultset_addref (r);
456 if (!r->connection->async || force_sync)
457 while (r->connection && ZOOM_event (1, &r->connection))
461 void ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
462 size_t start, size_t count)
464 int force_present = 0;
470 ZOOM_resultset_retrieve (r, force_present, start, count);
474 for (i = 0; i< count; i++)
475 recs[i] = ZOOM_resultset_record_immediate (r, i+start);
479 static int do_connect (ZOOM_connection c)
482 const char *effective_host;
485 effective_host = c->proxy;
487 effective_host = c->host_port;
489 yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
492 c->cs = cs_create_host (effective_host, 0, &add);
496 int ret = cs_connect (c->cs, add);
497 yaz_log (LOG_DEBUG, "cs_connect returned %d", ret);
500 c->state = STATE_CONNECTING;
501 c->mask = ZOOM_SELECT_READ | ZOOM_SELECT_WRITE |
506 c->state = STATE_IDLE;
507 c->error = ZOOM_ERROR_CONNECT;
511 int z3950_connection_socket(ZOOM_connection c)
514 return cs_fileno(c->cs);
518 int z3950_connection_mask(ZOOM_connection c)
525 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
530 sprintf (str, "send_APDU t=%p type=%d", c, a->which);
533 Z_OtherInformation **oi;
535 yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
537 if (!z_APDU(out, &a, 0, 0))
539 FILE *outf = fopen("/tmp/apdu.txt", "w");
542 ODR odr_pr = odr_createmem(ODR_PRINT);
543 fprintf (outf, "a=%p\n", a);
544 odr_setprint(odr_pr, outf);
545 z_APDU(odr_pr, &a, 0, 0);
549 c->error = ZOOM_ERROR_ENCODE;
556 static int send_APDU (ZOOM_connection c, Z_APDU *a)
559 if (encode_APDU(c, a, c->odr_out))
561 c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
562 odr_reset(c->odr_out);
567 static int ZOOM_connection_send_init (ZOOM_connection c)
570 Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
571 Z_InitRequest *ireq = apdu->u.initRequest;
572 Z_IdAuthentication *auth = odr_malloc(c->odr_out, sizeof(*auth));
573 const char *auth_groupId = ZOOM_options_get (c->options, "group");
574 const char *auth_userId = ZOOM_options_get (c->options, "user");
575 const char *auth_password = ZOOM_options_get (c->options, "pass");
577 ODR_MASK_SET(ireq->options, Z_Options_search);
578 ODR_MASK_SET(ireq->options, Z_Options_present);
579 ODR_MASK_SET(ireq->options, Z_Options_scan);
580 ODR_MASK_SET(ireq->options, Z_Options_sort);
581 ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
582 ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
584 ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
585 ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
586 ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
588 impname = ZOOM_options_get (c->options, "implementationName");
589 ireq->implementationName =
590 odr_malloc (c->odr_out, 15 + (impname ? strlen(impname) : 0));
591 strcpy (ireq->implementationName, "");
594 strcat (ireq->implementationName, impname);
595 strcat (ireq->implementationName, "/");
597 strcat (ireq->implementationName, "ZOOM-C/YAZ");
599 *ireq->maximumRecordSize =
600 ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
601 *ireq->preferredMessageSize =
602 ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
604 if (auth_groupId || auth_password)
606 Z_IdPass *pass = odr_malloc(c->odr_out, sizeof(*pass));
609 if (auth_groupId && *auth_groupId)
611 pass->groupId = odr_malloc(c->odr_out, strlen(auth_groupId)+1);
612 strcpy(pass->groupId, auth_groupId);
616 if (auth_userId && *auth_userId)
618 pass->userId = odr_malloc(c->odr_out, strlen(auth_userId)+1);
619 strcpy(pass->userId, auth_userId);
623 if (auth_password && *auth_password)
625 pass->password = odr_malloc(c->odr_out, strlen(auth_password)+1);
626 strcpy(pass->password, auth_password);
631 auth->which = Z_IdAuthentication_idPass;
632 auth->u.idPass = pass;
633 ireq->idAuthentication = auth;
636 else if (auth_userId)
638 auth->which = Z_IdAuthentication_open;
639 auth->u.open = odr_malloc(c->odr_out, strlen(auth_userId)+1);
640 strcpy(auth->u.open, auth_userId);
641 ireq->idAuthentication = auth;
644 yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
645 VAL_PROXY, 1, c->host_port);
652 static int ZOOM_connection_send_search (ZOOM_connection c)
655 int lslb, ssub, mspn;
657 Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
658 Z_SearchRequest *search_req = apdu->u.searchRequest;
659 const char *elementSetName;
660 const char *smallSetElementSetName;
661 const char *mediumSetElementSetName;
664 assert (c->tasks->which == ZOOM_TASK_SEARCH);
666 r = c->tasks->u.search.resultset;
669 ZOOM_options_get (r->options, "elementSetName");
670 smallSetElementSetName =
671 ZOOM_options_get (r->options, "smallSetElementSetName");
672 mediumSetElementSetName =
673 ZOOM_options_get (r->options, "mediumSetElementSetName");
675 if (!smallSetElementSetName)
676 smallSetElementSetName = elementSetName;
678 if (!mediumSetElementSetName)
679 mediumSetElementSetName = elementSetName;
684 /* prepare query for the search request */
685 search_req->query = r->r_query;
687 search_req->databaseNames =
688 set_DatabaseNames (c, &search_req->num_databaseNames);
690 /* get syntax (no need to provide unless piggyback is in effect) */
691 syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
693 lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
694 ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
695 mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
696 if (lslb != -1 && ssub != -1 && mspn != -1)
698 /* So're a Z39.50 expert? Let's hope you don't do sort */
699 *search_req->largeSetLowerBound = lslb;
700 *search_req->smallSetUpperBound = ssub;
701 *search_req->mediumSetPresentNumber = mspn;
703 else if (r->start == 0 && r->count > 0
704 && r->piggyback && !r->r_sort_spec)
706 /* Regular piggyback - do it unless we're going to do sort */
707 *search_req->largeSetLowerBound = 2000000000;
708 *search_req->smallSetUpperBound = r->count;
709 *search_req->mediumSetPresentNumber = r->count;
710 smallSetElementSetName = 0; /* no need to provide this */
714 /* non-piggyback. Need not provide elementsets or syntaxes .. */
715 smallSetElementSetName = 0;
716 mediumSetElementSetName = 0;
719 if (smallSetElementSetName && *smallSetElementSetName)
721 Z_ElementSetNames *esn = odr_malloc (c->odr_out, sizeof(*esn));
723 esn->which = Z_ElementSetNames_generic;
724 esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
725 search_req->smallSetElementSetNames = esn;
727 if (mediumSetElementSetName && *mediumSetElementSetName)
729 Z_ElementSetNames *esn = odr_malloc (c->odr_out, sizeof(*esn));
731 esn->which = Z_ElementSetNames_generic;
732 esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
733 search_req->mediumSetElementSetNames = esn;
736 search_req->preferredRecordSyntax =
737 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
741 if (c->support_named_resultsets)
745 /* find the lowest unused ordinal so that we re-use
746 result sets on the server. */
747 for (ord = 1; ; ord++)
750 sprintf (setname, "%d", ord);
751 for (rp = c->resultsets; rp; rp = rp->next)
752 if (rp->setname && !strcmp (rp->setname, setname))
757 r->setname = xstrdup (setname);
758 yaz_log (LOG_DEBUG, "allocating %s", r->setname);
761 r->setname = xstrdup ("default");
762 ZOOM_options_set (r->options, "setname", r->setname);
764 search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
765 /* send search request */
771 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
773 Z_DefaultDiagFormat *r;
778 if (p->which != Z_DiagRec_defaultFormat)
780 c->error = ZOOM_ERROR_DECODE;
783 r = p->u.defaultFormat;
786 case Z_DefaultDiagFormat_v2Addinfo:
787 addinfo = r->u.v2Addinfo;
789 case Z_DefaultDiagFormat_v3Addinfo:
790 addinfo = r->u.v3Addinfo;
794 c->addinfo = xstrdup (addinfo);
795 c->error = *r->condition;
798 ZOOM_record ZOOM_record_clone (ZOOM_record srec)
805 odr_enc = odr_createmem(ODR_ENCODE);
806 if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
808 buf = odr_getbuf (odr_enc, &size, 0);
810 nrec = xmalloc (sizeof(*nrec));
811 nrec->odr = odr_createmem(ODR_DECODE);
812 nrec->wrbuf_marc = 0;
813 odr_setbuf (nrec->odr, buf, size, 0);
814 z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
816 odr_destroy (odr_enc);
820 ZOOM_record ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
822 return record_cache_lookup (s, pos, 0);
825 ZOOM_record ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
827 ZOOM_resultset_retrieve (r, 1, pos, 1);
828 return ZOOM_resultset_record_immediate (r, pos);
831 void ZOOM_record_destroy (ZOOM_record rec)
836 wrbuf_free (rec->wrbuf_marc, 1);
837 odr_destroy (rec->odr);
841 void *ZOOM_record_get (ZOOM_record rec, const char *type, size_t *len)
843 Z_NamePlusRecord *npr;
849 if (!strcmp (type, "database"))
851 return npr->databaseName;
853 else if (!strcmp (type, "syntax"))
855 if (npr->which == Z_NamePlusRecord_databaseRecord)
857 Z_External *r = (Z_External *) npr->u.databaseRecord;
858 oident *ent = oid_getentbyoid(r->direct_reference);
864 else if (!strcmp (type, "render"))
866 if (npr->which == Z_NamePlusRecord_databaseRecord)
868 Z_External *r = (Z_External *) npr->u.databaseRecord;
869 oident *ent = oid_getentbyoid(r->direct_reference);
871 if (r->which == Z_External_sutrs)
873 *len = r->u.sutrs->len;
874 return r->u.sutrs->buf;
876 else if (r->which == Z_External_octet)
885 case VAL_APPLICATION_XML:
888 if (!rec->wrbuf_marc)
889 rec->wrbuf_marc = wrbuf_alloc();
890 if (marc_display_wrbuf (r->u.octet_aligned->buf,
892 r->u.octet_aligned->len) > 0)
894 *len = wrbuf_len(rec->wrbuf_marc);
895 return wrbuf_buf(rec->wrbuf_marc);
898 *len = r->u.octet_aligned->len;
899 return r->u.octet_aligned->buf;
901 else if (r->which == Z_External_grs1)
909 else if (!strcmp (type, "raw"))
911 if (npr->which == Z_NamePlusRecord_databaseRecord)
914 return (Z_External *) npr->u.databaseRecord;
921 static void record_cache_add (ZOOM_resultset r,
922 Z_NamePlusRecord *npr,
924 const char *elementSetName)
926 ZOOM_record_cache rc;
928 for (rc = r->record_cache; rc; rc = rc->next)
932 if ((!elementSetName && !rc->elementSetName)
933 || (elementSetName && rc->elementSetName &&
934 !strcmp (elementSetName, rc->elementSetName)))
936 /* not destroying rc->npr (it's handled by nmem )*/
938 /* keeping wrbuf_marc too */
944 rc = odr_malloc (r->odr, sizeof(*rc));
947 rc->rec.wrbuf_marc = 0;
949 rc->elementSetName = odr_strdup (r->odr, elementSetName);
951 rc->elementSetName = 0;
953 rc->next = r->record_cache;
954 r->record_cache = rc;
957 static ZOOM_record record_cache_lookup (ZOOM_resultset r,
959 const char *elementSetName)
961 ZOOM_record_cache rc;
963 for (rc = r->record_cache; rc; rc = rc->next)
967 if ((!elementSetName && !rc->elementSetName)
968 || (elementSetName && rc->elementSetName &&
969 !strcmp (elementSetName, rc->elementSetName)))
976 static void handle_records (ZOOM_connection c, Z_Records *sr,
979 ZOOM_resultset resultset;
983 switch (c->tasks->which)
985 case ZOOM_TASK_SEARCH:
986 resultset = c->tasks->u.search.resultset;
988 case ZOOM_TASK_RETRIEVE:
989 resultset = c->tasks->u.retrieve.resultset;
994 if (sr && sr->which == Z_Records_NSD)
996 Z_DiagRec dr, *dr_p = &dr;
997 dr.which = Z_DiagRec_defaultFormat;
998 dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1000 response_diag (c, dr_p);
1002 else if (sr && sr->which == Z_Records_multipleNSD)
1004 if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1005 response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1007 c->error = ZOOM_ERROR_DECODE;
1011 if (resultset->count + resultset->start > resultset->size)
1012 resultset->count = resultset->size - resultset->start;
1013 if (resultset->count < 0)
1014 resultset->count = 0;
1015 if (sr && sr->which == Z_Records_DBOSD)
1018 NMEM nmem = odr_extract_mem (c->odr_in);
1019 Z_NamePlusRecordList *p =
1020 sr->u.databaseOrSurDiagnostics;
1021 for (i = 0; i<p->num_records; i++)
1023 record_cache_add (resultset, p->records[i],
1024 i+ resultset->start, 0);
1026 /* transfer our response to search_nmem .. we need it later */
1027 nmem_transfer (resultset->odr->mem, nmem);
1028 nmem_destroy (nmem);
1029 if (present_phase && p->num_records == 0)
1031 /* present response and we didn't get any records! */
1032 c->error = ZOOM_ERROR_DECODE;
1035 else if (present_phase)
1037 /* present response and we didn't get any records! */
1038 c->error = ZOOM_ERROR_DECODE;
1043 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1045 handle_records (c, pr->records, 1);
1048 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1050 ZOOM_resultset resultset;
1052 yaz_log (LOG_DEBUG, "got search response");
1054 if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1057 resultset = c->tasks->u.search.resultset;
1059 resultset->size = *sr->resultCount;
1060 handle_records (c, sr->records, 0);
1063 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1065 if (res->diagnostics && res->num_diagnostics > 0)
1066 response_diag (c, res->diagnostics[0]);
1069 static int send_sort (ZOOM_connection c)
1071 ZOOM_resultset resultset;
1073 if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1076 resultset = c->tasks->u.search.resultset;
1080 resultset->r_sort_spec = 0;
1083 if (resultset->r_sort_spec)
1085 Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
1086 Z_SortRequest *req = apdu->u.sortRequest;
1088 req->num_inputResultSetNames = 1;
1089 req->inputResultSetNames = (Z_InternationalString **)
1090 odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
1091 req->inputResultSetNames[0] =
1092 odr_strdup (c->odr_out, resultset->setname);
1093 req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
1094 req->sortSequence = resultset->r_sort_spec;
1095 resultset->r_sort_spec = 0;
1096 send_APDU (c, apdu);
1102 static int send_present (ZOOM_connection c)
1104 Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
1105 Z_PresentRequest *req = apdu->u.presentRequest;
1107 const char *syntax =
1108 ZOOM_options_get (c->options, "preferredRecordSyntax");
1109 const char *element =
1110 ZOOM_options_get (c->options, "elementSetName");
1111 ZOOM_resultset resultset;
1116 switch (c->tasks->which)
1118 case ZOOM_TASK_SEARCH:
1119 resultset = c->tasks->u.search.resultset;
1121 case ZOOM_TASK_RETRIEVE:
1122 resultset = c->tasks->u.retrieve.resultset;
1123 resultset->start = c->tasks->u.retrieve.start;
1124 resultset->count = c->tasks->u.retrieve.count;
1126 if (resultset->start >= resultset->size)
1128 if (resultset->start + resultset->count > resultset->size)
1129 resultset->count = resultset->size - resultset->start;
1135 if (c->error) /* don't continue on error */
1137 if (resultset->start < 0)
1139 for (i = 0; i<resultset->count; i++)
1142 record_cache_lookup (resultset, i + resultset->start, 0);
1146 if (i == resultset->count)
1149 resultset->start += i;
1150 resultset->count -= i;
1151 *req->resultSetStartPoint = resultset->start + 1;
1152 *req->numberOfRecordsRequested = resultset->count;
1153 assert (*req->numberOfRecordsRequested > 0);
1155 if (syntax && *syntax)
1156 req->preferredRecordSyntax =
1157 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1159 if (element && *element)
1161 Z_ElementSetNames *esn = odr_malloc (c->odr_out, sizeof(*esn));
1162 Z_RecordComposition *compo = odr_malloc (c->odr_out, sizeof(*compo));
1164 esn->which = Z_ElementSetNames_generic;
1165 esn->u.generic = odr_strdup (c->odr_out, element);
1166 compo->which = Z_RecordComp_simple;
1167 compo->u.simple = esn;
1168 req->recordComposition = compo;
1170 req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
1171 send_APDU (c, apdu);
1175 static int ZOOM_connection_exec_task (ZOOM_connection c)
1177 ZOOM_task task = c->tasks;
1179 yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task");
1182 if (c->error != ZOOM_ERROR_NONE ||
1183 (!c->cs && task->which != ZOOM_TASK_CONNECT))
1185 ZOOM_connection_remove_tasks (c);
1188 yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d", task->which);
1192 switch (task->which)
1194 case ZOOM_TASK_SEARCH:
1195 /* see if search hasn't been sent yet. */
1196 if (ZOOM_connection_send_search (c))
1199 case ZOOM_TASK_RETRIEVE:
1200 if (send_present (c))
1203 case ZOOM_TASK_CONNECT:
1207 ZOOM_connection_remove_task (c);
1211 static int send_sort_present (ZOOM_connection c)
1213 int r = send_sort (c);
1215 r = send_present (c);
1219 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
1221 Z_InitResponse *initrs;
1223 yaz_log (LOG_DEBUG, "hande_apdu type=%d", apdu->which);
1227 case Z_APDU_initResponse:
1228 initrs = apdu->u.initResponse;
1229 if (!*initrs->result)
1231 c->error = ZOOM_ERROR_INIT;
1236 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
1238 xfree (c->cookie_in);
1241 c->cookie_in = xstrdup(cookie);
1242 if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets))
1243 c->support_named_resultsets = 1;
1246 assert (c->tasks->which == ZOOM_TASK_CONNECT);
1247 ZOOM_connection_remove_task (c);
1249 ZOOM_connection_exec_task (c);
1252 case Z_APDU_searchResponse:
1253 handle_search_response (c, apdu->u.searchResponse);
1254 if (!send_sort_present (c))
1255 ZOOM_connection_remove_task (c);
1257 case Z_APDU_presentResponse:
1258 handle_present_response (c, apdu->u.presentResponse);
1259 if (!send_present (c))
1260 ZOOM_connection_remove_task (c);
1262 case Z_APDU_sortResponse:
1263 sort_response (c, apdu->u.sortResponse);
1264 if (!send_present (c))
1265 ZOOM_connection_remove_task (c);
1269 static int do_read (ZOOM_connection c)
1274 r = cs_get (c->cs, &c->buf_in, &c->len_in);
1279 c->error= ZOOM_ERROR_CONNECTION_LOST;
1284 odr_reset (c->odr_in);
1285 odr_setbuf (c->odr_in, c->buf_in, r, 0);
1286 if (!z_APDU (c->odr_in, &apdu, 0, 0))
1288 c->error = ZOOM_ERROR_DECODE;
1293 handle_apdu (c, apdu);
1299 static int do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
1303 if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
1305 if (c->state == STATE_CONNECTING)
1306 c->error = ZOOM_ERROR_CONNECT;
1308 c->error = ZOOM_ERROR_CONNECTION_LOST;
1314 c->state = STATE_ESTABLISHED;
1315 c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_WRITE|ZOOM_SELECT_EXCEPT;
1319 c->state = STATE_ESTABLISHED;
1320 c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
1325 static int do_write(ZOOM_connection c)
1327 return do_write_ex (c, c->buf_out, c->len_out);
1331 const char *ZOOM_connection_option_get (ZOOM_connection c, const char *key)
1333 return ZOOM_options_get (c->options, key);
1336 void ZOOM_connection_option_set (ZOOM_connection c, const char *key,
1339 ZOOM_options_set (c->options, key, val);
1342 const char *ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
1344 return ZOOM_options_get (r->options, key);
1347 void ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
1350 ZOOM_options_set (r->options, key, val);
1354 int ZOOM_connection_errcode (ZOOM_connection c)
1356 return ZOOM_connection_error (c, 0, 0);
1359 const char *ZOOM_connection_errmsg (ZOOM_connection c)
1362 ZOOM_connection_error (c, &msg, 0);
1366 const char *ZOOM_connection_addinfo (ZOOM_connection c)
1368 const char *addinfo;
1369 ZOOM_connection_error (c, 0, &addinfo);
1373 int ZOOM_connection_error (ZOOM_connection c, const char **cp,
1374 const char **addinfo)
1376 int error = c->error;
1381 case ZOOM_ERROR_NONE:
1382 *cp = "No error"; break;
1383 case ZOOM_ERROR_CONNECT:
1384 *cp = "Connect failed"; break;
1385 case ZOOM_ERROR_MEMORY:
1386 *cp = "Out of memory"; break;
1387 case ZOOM_ERROR_ENCODE:
1388 *cp = "Encoding failed"; break;
1389 case ZOOM_ERROR_DECODE:
1390 *cp = "Decoding failed"; break;
1391 case ZOOM_ERROR_CONNECTION_LOST:
1392 *cp = "Connection lost"; break;
1393 case ZOOM_ERROR_INIT:
1394 *cp = "Init rejected"; break;
1395 case ZOOM_ERROR_INTERNAL:
1396 *cp = "Internal failure"; break;
1397 case ZOOM_ERROR_TIMEOUT:
1398 *cp = "Timeout"; break;
1400 *cp = diagbib1_str (error);
1406 *addinfo = c->addinfo;
1413 int ZOOM_connection_do_io(ZOOM_connection c, int mask)
1417 int r = cs_look(c->cs);
1418 yaz_log (LOG_LOG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
1423 c->error = ZOOM_ERROR_CONNECT;
1426 else if (r == CS_CONNECT)
1428 yaz_log (LOG_LOG, "calling rcvconnect");
1429 if (cs_rcvconnect (c->cs) < 0)
1431 c->error = ZOOM_ERROR_CONNECT;
1435 ZOOM_connection_send_init (c);
1439 if (mask & ZOOM_SELECT_READ)
1441 if (c->cs && (mask & ZOOM_SELECT_WRITE))
1445 yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d", c, mask);
1446 if (c->state == STATE_CONNECTING)
1448 if (mask & ZOOM_SELECT_WRITE)
1449 ZOOM_connection_send_init (c);
1452 c->error = ZOOM_ERROR_CONNECT;
1456 else if (c->state == STATE_ESTABLISHED)
1458 if (mask & ZOOM_SELECT_READ)
1460 if (c->cs && (mask & ZOOM_SELECT_WRITE))
1465 c->error = ZOOM_ERROR_INTERNAL;
1469 event = ZOOM_Event_create (1);
1470 ZOOM_connection_put_event (c, event);
1475 int ZOOM_event (int no, ZOOM_connection *cs)
1478 struct pollfd pollfds[1024];
1479 ZOOM_connection poll_cs[1024];
1482 fd_set input, output, except;
1487 for (i = 0; i<no; i++)
1489 ZOOM_connection c = cs[i];
1491 if (c && (event = ZOOM_connection_get_event(c)))
1493 ZOOM_Event_destroy (event);
1497 for (i = 0; i<no; i++)
1499 ZOOM_connection c = cs[i];
1500 if (c && ZOOM_connection_exec_task (c))
1514 for (i = 0; i<no; i++)
1516 ZOOM_connection c = cs[i];
1521 fd = z3950_connection_socket(c);
1522 mask = z3950_connection_mask(c);
1532 short poll_events = 0;
1534 if (mask & ZOOM_SELECT_READ)
1535 poll_events += POLLIN;
1536 if (mask & ZOOM_SELECT_WRITE)
1537 poll_events += POLLOUT;
1538 if (mask & ZOOM_SELECT_EXCEPT)
1539 poll_events += POLLERR;
1540 pollfds[nfds].fd = fd;
1541 pollfds[nfds].events = poll_events;
1542 pollfds[nfds].revents = 0;
1547 if (mask & ZOOM_SELECT_READ)
1549 FD_SET (fd, &input);
1552 if (mask & ZOOM_SELECT_WRITE)
1554 FD_SET (fd, &output);
1557 if (mask & ZOOM_SELECT_EXCEPT)
1559 FD_SET (fd, &except);
1567 yaz_log (LOG_DEBUG, "poll start");
1568 r = poll (pollfds, nfds, 15000);
1569 yaz_log (LOG_DEBUG, "poll stop, returned r=%d", r);
1570 for (i = 0; i<nfds; i++)
1572 ZOOM_connection c = poll_cs[i];
1576 if (pollfds[i].revents & POLLIN)
1577 mask += ZOOM_SELECT_READ;
1578 if (pollfds[i].revents & POLLOUT)
1579 mask += ZOOM_SELECT_WRITE;
1580 if (pollfds[i].revents & POLLERR)
1581 mask += ZOOM_SELECT_EXCEPT;
1583 ZOOM_connection_do_io(c, mask);
1585 else if (r == 0 && c->mask)
1587 ZOOM_Event event = ZOOM_Event_create(0);
1588 /* timeout and this connection was waiting */
1589 c->error = ZOOM_ERROR_TIMEOUT;
1591 ZOOM_connection_put_event(c, event);
1595 yaz_log (LOG_DEBUG, "select start");
1596 r = select (max_fd+1, &input, &output, &except, &tv);
1597 yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
1598 for (i = 0; i<no; i++)
1600 ZOOM_connection c = cs[i];
1605 fd = z3950_connection_socket(c);
1609 /* no timeout and real socket */
1610 if (FD_ISSET(fd, &input))
1611 mask += ZOOM_SELECT_READ;
1612 if (FD_ISSET(fd, &output))
1613 mask += ZOOM_SELECT_WRITE;
1614 if (FD_ISSET(fd, &except))
1615 mask += ZOOM_SELECT_EXCEPT;
1617 ZOOM_connection_do_io(c, mask);
1619 if (r == 0 && c->mask)
1621 ZOOM_Event event = ZOOM_Event_create(0);
1622 /* timeout and this connection was waiting */
1623 c->error = ZOOM_ERROR_TIMEOUT;
1625 yaz_log (LOG_DEBUG, "timeout");
1626 ZOOM_connection_put_event(c, event);
1630 for (i = 0; i<no; i++)
1632 ZOOM_connection c = cs[i];
1634 if (c && (event = ZOOM_connection_get_event(c)))
1636 ZOOM_Event_destroy (event);