* Sebastian Hammer, Adam Dickmeiss
*
* $Log: seshigh.c,v $
- * Revision 1.2 1995-03-16 13:29:01 quinn
- * Partitioned server.
+ * Revision 1.13 1995-03-30 09:09:24 quinn
+ * Added state-handle and some support for asynchronous activities.
*
- * Revision 1.1 1995/03/15 16:02:10 quinn
- * Modded session.c seshigh.c
+ * Revision 1.12 1995/03/29 15:40:16 quinn
+ * Ongoing work. Statserv is now dynamic by default
*
- * Revision 1.10 1995/03/15 15:18:51 quinn
- * Little changes to better support nonblocking I/O
- * Added backend.h
+ * Revision 1.11 1995/03/28 09:16:21 quinn
+ * Added record packing to the search request
*
- * Revision 1.9 1995/03/15 13:20:23 adam
- * Yet another bug fix in very dummy_database...
+ * Revision 1.10 1995/03/27 08:34:24 quinn
+ * Added dynamic server functionality.
+ * Released bindings to session.c (is now redundant)
*
- * Revision 1.8 1995/03/15 11:18:17 quinn
- * Smallish changes.
+ * Revision 1.9 1995/03/22 15:01:26 quinn
+ * Adjusting record packing.
*
- * Revision 1.7 1995/03/15 09:40:15 adam
- * Bug fixes in dummy_database_...
+ * Revision 1.8 1995/03/22 10:13:21 quinn
+ * Working on record packer
*
- * Revision 1.6 1995/03/15 09:08:30 adam
- * Take care of preferredMessageSize.
+ * Revision 1.7 1995/03/21 15:53:31 quinn
+ * Little changes.
*
- * Revision 1.5 1995/03/15 08:37:44 quinn
- * Now we're pretty much set for nonblocking I/O.
+ * Revision 1.6 1995/03/21 12:30:09 quinn
+ * Beginning to add support for record packing.
*
- * Revision 1.4 1995/03/15 08:27:20 adam
- * PresentRequest changed to return MARC records from file 'dummy-records'.
+ * Revision 1.5 1995/03/17 10:44:13 quinn
+ * Added catch of null-string in makediagrec
*
- * Revision 1.3 1995/03/14 16:59:48 quinn
- * Bug-fixes
+ * Revision 1.4 1995/03/17 10:18:08 quinn
+ * Added memory management.
*
- * Revision 1.2 1995/03/14 11:30:14 quinn
- * Works better now.
+ * Revision 1.3 1995/03/16 17:42:39 quinn
+ * Little changes
*
- * Revision 1.1 1995/03/14 10:28:01 quinn
- * More work on demo server.
+ * Revision 1.2 1995/03/16 13:29:01 quinn
+ * Partitioned server.
*
+ * Revision 1.1 1995/03/15 16:02:10 quinn
+ * Modded session.c to seshigh.c
*
*/
#include <eventl.h>
#include <session.h>
#include <proto.h>
+#include <oid.h>
#include <backend.h>
new->state = ASSOC_UNINIT;
new->input_buffer = 0;
new->input_buffer_len = 0;
+ if (cs_getproto(link) == CS_Z3950)
+ new->proto = PROTO_Z3950;
+ else
+ new->proto = PROTO_SR;
return new;
}
odr_destroy(h->decode);
odr_destroy(h->encode);
free(h->encode_buffer);
+ if (h->input_buffer)
+ free(h->input_buffer);
+ if (h->backend)
+ bend_close(h->backend);
free(h);
}
assoc->input_apdu_len = res;
if (process_apdu(h) < 0)
{
- fprintf(stderr, "Bad data from peer\n");
+ fprintf(stderr, "Operation failed\n");
cs_close(conn);
destroy_association(assoc);
iochan_destroy(h);
fprintf(stderr, "Bad APDU\n");
return -1;
}
+ odr_reset(assoc->decode); /* release incopming APDU */
+ odr_reset(assoc->encode); /* release stuff alloced before encoding */
return res;
}
association *assoc = iochan_getdata(client);
bend_initrequest binitreq;
bend_initresult *binitres;
+ Odr_bitmask options, protocolVersion;
fprintf(stderr, "Got initRequest.\n");
if (req->implementationId)
return -1;
}
+ assoc->backend = binitres->handle;
apdup = &apdu;
apdu.which = Z_APDU_initResponse;
apdu.u.initResponse = &resp;
resp.referenceId = req->referenceId;
- resp.options = req->options; /* should check these */
- resp.protocolVersion = req->protocolVersion;
+ ODR_MASK_ZERO(&options);
+ if (ODR_MASK_GET(req->options, Z_Options_search))
+ ODR_MASK_SET(&options, Z_Options_search);
+ if (ODR_MASK_GET(req->options, Z_Options_present))
+ ODR_MASK_SET(&options, Z_Options_present);
+ if (ODR_MASK_GET(req->options, Z_Options_delSet))
+ ODR_MASK_SET(&options, Z_Options_delSet);
+ if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
+ ODR_MASK_SET(&options, Z_Options_namedResultSets);
+ resp.options = &options;
+ ODR_MASK_ZERO(&protocolVersion);
+ if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
+ ODR_MASK_SET(&protocolVersion, Z_ProtocolVersion_1);
+ if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
+ ODR_MASK_SET(&protocolVersion, Z_ProtocolVersion_2);
+ resp.protocolVersion = &protocolVersion;
assoc->maximumRecordSize = *req->maximumRecordSize;
- if (assoc->maximumRecordSize > ENCODE_BUFFER_SIZE - 500)
- assoc->maximumRecordSize = ENCODE_BUFFER_SIZE - 500;
+ /*
+ * This is not so hot. The big todo for ODR is dynamic memory allocation
+ * on encoding.
+ */
+ if (assoc->maximumRecordSize > ENCODE_BUFFER_SIZE - 1000)
+ assoc->maximumRecordSize = ENCODE_BUFFER_SIZE - 1000;
assoc->preferredMessageSize = *req->preferredMessageSize;
if (assoc->preferredMessageSize > assoc->maximumRecordSize)
assoc->preferredMessageSize = assoc->maximumRecordSize;
resp.maximumRecordSize = &assoc->maximumRecordSize;
resp.result = &result;
resp.implementationId = "YAZ";
- resp.implementationName = "YAZ/Simple asynchronous test server";
- resp.implementationVersion = "$Revision: 1.2 $";
+ resp.implementationName = "Index Data/YAZ Generic Frontend Server";
+ resp.implementationVersion = "$Revision: 1.13 $";
resp.userInformationField = 0;
if (!z_APDU(assoc->encode, &apdup, 0))
{
return -1;
}
odr_getbuf(assoc->encode, &assoc->encoded_len);
+ odr_reset(assoc->encode);
iochan_setflags(client, EVENT_OUTPUT | EVENT_EXCEPT);
return 0;
}
-static Z_Records *diagrec(int error, char *addinfo)
+static Z_Records *diagrec(oid_proto proto, int error, char *addinfo)
{
static Z_Records rec;
- static Odr_oid bib1[] = { 1, 2, 3, 4, 5, -1 };
+ oident bib1;
static Z_DiagRec dr;
static int err;
- fprintf(stderr, "Diagnostic: %d -- %s\n", error, addinfo);
+ bib1.proto = proto;
+ bib1.class = CLASS_DIAGSET;
+ bib1.value = VAL_BIB1;
+
+ fprintf(stderr, "Diagnostic: %d -- %s\n", error, addinfo ? addinfo :
+ "NULL");
err = error;
rec.which = Z_Records_NSD;
rec.u.nonSurrogateDiagnostic = &dr;
- dr.diagnosticSetId = bib1;
+ dr.diagnosticSetId = oid_getoidbyent(&bib1);
+ dr.condition = &err;
+ dr.addinfo = addinfo ? addinfo : "";
+ return &rec;
+}
+
+static Z_NamePlusRecord *surrogatediagrec(oid_proto proto, char *dbname,
+ int error, char *addinfo)
+{
+ static Z_NamePlusRecord rec;
+ static Z_DiagRec dr;
+ static int err;
+ oident bib1;
+
+ bib1.proto = proto;
+ bib1.class = CLASS_DIAGSET;
+ bib1.value = VAL_BIB1;
+
+ fprintf(stderr, "SurrogateDiagnotic: %d -- %s\n", error, addinfo);
+ err = error;
+ rec.databaseName = dbname;
+ rec.which = Z_NamePlusRecord_surrogateDiagnostic;
+ rec.u.surrogateDiagnostic = &dr;
+ dr.diagnosticSetId = oid_getoidbyent(&bib1);
dr.condition = &err;
- dr.addinfo = addinfo;
+ dr.addinfo = addinfo ? addinfo : "";
return &rec;
}
+#define MAX_RECORDS 256
+
+static Z_Records *pack_records(association *a, char *setname, int start,
+ int *num, Z_ElementSetNames *esn,
+ int *next, int *pres)
+{
+ int recno, total_length = 0, toget = *num;
+ static Z_Records records;
+ static Z_NamePlusRecordList reclist;
+ static Z_NamePlusRecord *list[MAX_RECORDS];
+ oident recform;
+ Odr_oid *oid;
+
+ records.which = Z_Records_DBOSD;
+ records.u.databaseOrSurDiagnostics = &reclist;
+ reclist.num_records = 0;
+ reclist.records = list;
+ *pres = Z_PRES_SUCCESS;
+ *num = 0;
+ *next = 0;
+
+ recform.proto = a->proto;
+ recform.class = CLASS_RECSYN;
+ recform.value = VAL_USMARC;
+ if (!(oid = odr_oiddup(a->encode, oid_getoidbyent(&recform))))
+ return 0;
+
+ fprintf(stderr, "Request to pack %d+%d\n", start, toget);
+ fprintf(stderr, "pms=%d, mrs=%d\n", a->preferredMessageSize,
+ a->maximumRecordSize);
+ for (recno = start; reclist.num_records < toget; recno++)
+ {
+ bend_fetchrequest freq;
+ bend_fetchresult *fres;
+ Z_NamePlusRecord *thisrec;
+ Z_DatabaseRecord *thisext;
+
+ if (reclist.num_records == MAX_RECORDS - 1)
+ {
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ freq.setname = setname;
+ freq.number = recno;
+ if (!(fres = bend_fetch(a->backend, &freq, 0)))
+ {
+ *pres = Z_PRES_FAILURE;
+ return diagrec(a->proto, 2, "Backend interface problem");
+ }
+ /* backend should be able to signal whether error is system-wide
+ or only pertaining to current record */
+ if (fres->errcode)
+ {
+ *pres = Z_PRES_FAILURE;
+ return diagrec(a->proto, fres->errcode, fres->errstring);
+ }
+ fprintf(stderr, " Got record, len=%d, total=%d\n",
+ fres->len, total_length);
+ if (fres->len + total_length > a->preferredMessageSize)
+ {
+ fprintf(stderr, " In drop-zone\n");
+ /* record is small enough, really */
+ if (fres->len <= a->preferredMessageSize)
+ {
+ fprintf(stderr, " Dropped last normal-sized record\n");
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ /* record can only be fetched by itself */
+ if (fres->len < a->maximumRecordSize)
+ {
+ fprintf(stderr, " Record > prefmsgsz\n");
+ if (toget > 1)
+ {
+ fprintf(stderr, " Dropped it\n");
+ reclist.records[reclist.num_records] =
+ surrogatediagrec(a->proto, fres->basename, 16, 0);
+ reclist.num_records++;
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ }
+ else /* too big entirely */
+ {
+ fprintf(stderr, "Record > maxrcdsz\n");
+ reclist.records[reclist.num_records] =
+ surrogatediagrec(a->proto, fres->basename, 17, 0);
+ reclist.num_records++;
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ }
+ if (!(thisrec = odr_malloc(a->encode, sizeof(*thisrec))))
+ return 0;
+ if (!(thisrec->databaseName = odr_malloc(a->encode,
+ strlen(fres->basename) + 1)))
+ return 0;
+ strcpy(thisrec->databaseName, fres->basename);
+ thisrec->which = Z_NamePlusRecord_databaseRecord;
+ if (!(thisrec->u.databaseRecord = thisext = odr_malloc(a->encode,
+ sizeof(Z_DatabaseRecord))))
+ return 0;
+ thisext->direct_reference = oid; /* should be OID for current MARC */
+ thisext->indirect_reference = 0;
+ thisext->descriptor = 0;
+ thisext->which = ODR_EXTERNAL_octet;
+ if (!(thisext->u.octet_aligned = odr_malloc(a->encode,
+ sizeof(Odr_oct))))
+ return 0;
+ if (!(thisext->u.octet_aligned->buf = odr_malloc(a->encode, fres->len)))
+ return 0;
+ memcpy(thisext->u.octet_aligned->buf, fres->record, fres->len);
+ thisext->u.octet_aligned->len = thisext->u.octet_aligned->size =
+ fres->len;
+ reclist.records[reclist.num_records] = thisrec;
+ reclist.num_records++;
+ total_length += fres->len;
+ (*num)++;
+ *next = fres->last_in_set ? 0 : recno + 1;
+ }
+ return &records;
+}
+
static int process_searchRequest(IOCHAN client, Z_SearchRequest *req)
{
Z_APDU apdu, *apdup;
association *assoc = iochan_getdata(client);
int nulint = 0;
bool_t sr = 1;
- int nrp;
bend_searchrequest bsrq;
bend_searchresult *bsrt;
+ oident *oent;
+ int next = 0;
fprintf(stderr, "Got SearchRequest.\n");
apdup = &apdu;
apdu.u.searchResponse = &resp;
resp.referenceId = req->referenceId;
- bsrq.setname = req->resultSetName;
- bsrq.replace_set = *req->replaceIndicator;
- bsrq.num_bases = req->num_databaseNames;
- bsrq.basenames = req->databaseNames;
- bsrq.query = req->query;
+ resp.records = 0;
+ if (req->query->which == Z_Query_type_1)
+ {
+ Z_RPNQuery *q = req->query->u.type_1;
+
+ if (!(oent = oid_getentbyoid(q->attributeSetId)) ||
+ oent->class != CLASS_ATTSET ||
+ oent->value != VAL_BIB1)
+ resp.records = diagrec(assoc->proto, 121, 0);
+ }
+ if (!resp.records)
+ {
+ int toget;
+ Z_ElementSetNames *setnames;
+ int presst = 0;
- if (!(bsrt = bend_search(&bsrq)))
- return -1;
- else if (bsrt->errcode)
- resp.records = diagrec(bsrt->errcode, bsrt->errstring);
- else
- resp.records = 0;
+ bsrq.setname = req->resultSetName;
+ bsrq.replace_set = *req->replaceIndicator;
+ bsrq.num_bases = req->num_databaseNames;
+ bsrq.basenames = req->databaseNames;
+ bsrq.query = req->query;
+
+ if (!(bsrt = bend_search(assoc->backend, &bsrq, 0)))
+ return -1;
+ else if (bsrt->errcode)
+ resp.records = diagrec(assoc->proto, bsrt->errcode,
+ bsrt->errstring);
+ else
+ resp.records = 0;
- resp.resultCount = &bsrt->hits;
- resp.numberOfRecordsReturned = &nulint;
- nrp = bsrt->hits ? 1 : 0;
- resp.nextResultSetPosition = &nrp;
- resp.searchStatus = &sr;
- resp.resultSetStatus = &sr;
- resp.presentStatus = 0;
+ resp.resultCount = &bsrt->hits;
+
+ /* how many records does the user agent want, then? */
+ if (bsrt->hits <= *req->smallSetUpperBound)
+ {
+ toget = bsrt->hits;
+ setnames = req->smallSetElementSetNames;
+ }
+ else if (bsrt->hits < *req->largeSetLowerBound)
+ {
+ toget = *req->mediumSetPresentNumber;
+ setnames = req->mediumSetElementSetNames;
+ }
+ else
+ toget = 0;
+
+ if (toget)
+ {
+ resp.records = pack_records(assoc, req->resultSetName, 1, &toget,
+ setnames, &next, &presst);
+ if (!resp.records)
+ return -1;
+ resp.numberOfRecordsReturned = &toget;
+ resp.nextResultSetPosition = &next;
+ resp.searchStatus = &sr;
+ resp.resultSetStatus = &sr;
+ resp.presentStatus = &presst;
+ }
+ else
+ {
+ resp.records = 0;
+ resp.numberOfRecordsReturned = &nulint;
+ resp.nextResultSetPosition = &nulint;
+ resp.searchStatus = &sr;
+ resp.resultSetStatus = &sr;
+ resp.presentStatus = 0;
+ }
+ }
+ else
+ {
+ resp.resultCount = &nulint;
+ resp.numberOfRecordsReturned = &nulint;
+ resp.nextResultSetPosition = &nulint;
+ resp.searchStatus = &nulint;
+ resp.resultSetStatus = 0;
+ }
if (!z_APDU(assoc->encode, &apdup, 0))
{
return -1;
}
odr_getbuf(assoc->encode, &assoc->encoded_len);
+ odr_reset(assoc->encode);
iochan_setflags(client, EVENT_OUTPUT | EVENT_EXCEPT);
return 0;
}
Z_APDU apdu, *apdup;
Z_PresentResponse resp;
association *assoc = iochan_getdata(client);
- int nrr = 1;
+ int presst, next, num;
fprintf(stderr, "Got PresentRequest.\n");
apdup = &apdu;
apdu.u.presentResponse = &resp;
resp.referenceId = req->referenceId;
- resp.numberOfRecordsReturned = &nrr;
- resp.nextResultSetPosition = &nrr;
- resp.presentStatus = &nrr;
-
- resp.records = diagrec(1, "No records yet.");
+ num = *req->numberOfRecordsRequested;
+ resp.records = pack_records(assoc, req->resultSetId,
+ *req->resultSetStartPoint, &num, req->elementSetNames, &next, &presst);
+ if (!resp.records)
+ return -1;
+ resp.numberOfRecordsReturned = #
+ resp.presentStatus = &presst;
+ resp.nextResultSetPosition = &next;
if (!z_APDU(assoc->encode, &apdup, 0))
{
return -1;
}
odr_getbuf(assoc->encode, &assoc->encoded_len);
+ odr_reset(assoc->encode);
iochan_setflags(client, EVENT_OUTPUT | EVENT_EXCEPT);
return 0;
}
projects / yaz-moved-to-github.git / blobdiff