Added RFC1006 as separate library
[yaz-moved-to-github.git] / server / seshigh.c
index 8b5702a..02bdd79 100644 (file)
@@ -4,7 +4,26 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: seshigh.c,v $
- * Revision 1.9  1995-03-22 15:01:26  quinn
+ * Revision 1.15  1995-03-30 14:03:23  quinn
+ * Added RFC1006 as separate library
+ *
+ * Revision 1.14  1995/03/30  12:18:17  quinn
+ * Fixed bug.
+ *
+ * Revision 1.13  1995/03/30  09:09:24  quinn
+ * Added state-handle and some support for asynchronous activities.
+ *
+ * Revision 1.12  1995/03/29  15:40:16  quinn
+ * Ongoing work. Statserv is now dynamic by default
+ *
+ * Revision 1.11  1995/03/28  09:16:21  quinn
+ * Added record packing to the search request
+ *
+ * Revision 1.10  1995/03/27  08:34:24  quinn
+ * Added dynamic server functionality.
+ * Released bindings to session.c (is now redundant)
+ *
+ * Revision 1.9  1995/03/22  15:01:26  quinn
  * Adjusting record packing.
  *
  * Revision 1.8  1995/03/22  10:13:21  quinn
@@ -40,6 +59,7 @@
 #include <eventl.h>
 #include <session.h>
 #include <proto.h>
+#include <oid.h>
 
 #include <backend.h>
 
@@ -69,6 +89,11 @@ association *create_association(IOCHAN channel, COMSTACK link)
     new->state = ASSOC_UNINIT;
     new->input_buffer = 0;
     new->input_buffer_len = 0;
+    new->backend = 0;
+    if (cs_getproto(link) == CS_Z3950)
+       new->proto = PROTO_Z3950;
+    else
+       new->proto = PROTO_SR;
     return new;
 }
 
@@ -79,6 +104,8 @@ void destroy_association(association *h)
     free(h->encode_buffer);
     if (h->input_buffer)
        free(h->input_buffer);
+    if (h->backend)
+       bend_close(h->backend);
     free(h);
 }
 
@@ -177,6 +204,7 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
     association *assoc = iochan_getdata(client);
     bend_initrequest binitreq;
     bend_initresult *binitres;
+    Odr_bitmask options, protocolVersion;
 
     fprintf(stderr, "Got initRequest.\n");
     if (req->implementationId)
@@ -193,12 +221,27 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
        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;
     /*
      * This is not so hot. The big todo for ODR is dynamic memory allocation
@@ -213,8 +256,8 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
     resp.maximumRecordSize = &assoc->maximumRecordSize;
     resp.result = &result;
     resp.implementationId = "YAZ";
-    resp.implementationName = "YAZ/Simple asynchronous test server";
-    resp.implementationVersion = "$Revision: 1.9 $";
+    resp.implementationName = "Index Data/YAZ Generic Frontend Server";
+    resp.implementationVersion = "$Revision: 1.15 $";
     resp.userInformationField = 0;
     if (!z_APDU(assoc->encode, &apdup, 0))
     {
@@ -227,38 +270,46 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
     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;
 
+    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(char *dbname, int error,
-                                           char *addinfo)
+static Z_NamePlusRecord *surrogatediagrec(oid_proto proto, char *dbname,
+                                           int error, char *addinfo)
 {
     static Z_NamePlusRecord rec;
     static Z_DiagRec dr;
-    static Odr_oid bib1[] = { 1, 2, 3, 4, 5, -1 };
     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 = bib1;
+    dr.diagnosticSetId = oid_getoidbyent(&bib1);
     dr.condition = &err;
     dr.addinfo = addinfo ? addinfo : "";
     return &rec;
@@ -274,6 +325,8 @@ static Z_Records *pack_records(association *a, char *setname, int start,
     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;
@@ -283,6 +336,12 @@ static Z_Records *pack_records(association *a, char *setname, int start,
     *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);
@@ -300,17 +359,17 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        }
        freq.setname = setname;
        freq.number = recno;
-       if (!(fres = bend_fetch(&freq)))
+       if (!(fres = bend_fetch(a->backend, &freq, 0)))
        {
            *pres = Z_PRES_FAILURE;
-           return diagrec(2, "Backend interface problem");
+           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(fres->errcode, fres->errstring);
+           return diagrec(a->proto, fres->errcode, fres->errstring);
        }
        fprintf(stderr, "  Got record, len=%d, total=%d\n",
            fres->len, total_length);
@@ -332,7 +391,7 @@ static Z_Records *pack_records(association *a, char *setname, int start,
                {
                    fprintf(stderr, "  Dropped it\n");
                    reclist.records[reclist.num_records] =
-                        surrogatediagrec(fres->basename, 16, 0);
+                        surrogatediagrec(a->proto, fres->basename, 16, 0);
                    reclist.num_records++;
                    *pres = Z_PRES_PARTIAL_2;
                    break;
@@ -342,8 +401,7 @@ static Z_Records *pack_records(association *a, char *setname, int start,
            {
                fprintf(stderr, "Record > maxrcdsz\n");
                reclist.records[reclist.num_records] =
-                   surrogatediagrec(fres->basename,
-                   17, 0);
+                   surrogatediagrec(a->proto, fres->basename, 17, 0);
                reclist.num_records++;
                *pres = Z_PRES_PARTIAL_2;
                break;
@@ -359,7 +417,7 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        if (!(thisrec->u.databaseRecord = thisext =  odr_malloc(a->encode,
            sizeof(Z_DatabaseRecord))))
            return 0;
-       thisext->direct_reference = 0; /* should be OID for current MARC */
+       thisext->direct_reference = oid; /* should be OID for current MARC */
        thisext->indirect_reference = 0;
        thisext->descriptor = 0;
        thisext->which = ODR_EXTERNAL_octet;
@@ -387,9 +445,11 @@ static int process_searchRequest(IOCHAN client, Z_SearchRequest *req)
     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;
+    static int none = Z_RES_NONE;
 
     fprintf(stderr, "Got SearchRequest.\n");
     apdup = &apdu;
@@ -397,26 +457,92 @@ static int process_searchRequest(IOCHAN client, Z_SearchRequest *req)
     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 (!(bsrt = bend_search(&bsrq)))
-       return -1;
-    else if (bsrt->errcode)
-       resp.records = diagrec(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;
+       if (!(oent = oid_getentbyoid(q->attributeSetId)) ||
+           oent->class != CLASS_ATTSET ||
+           oent->value != VAL_BIB1)
+       {
+           resp.records = diagrec(assoc->proto, 121, 0);
+           resp.resultCount = &nulint;
+           resp.numberOfRecordsReturned = &nulint;
+           resp.nextResultSetPosition = &nulint;
+           resp.searchStatus = &none;
+           resp.resultSetStatus = 0;
+           resp.presentStatus = 0;
+       }
+    }
+    if (!resp.records)
+    {
+       int toget;
+       Z_ElementSetNames *setnames;
+       int presst = 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);
+           resp.resultCount = &nulint;
+           resp.numberOfRecordsReturned = &nulint;
+           resp.nextResultSetPosition = &nulint;
+           resp.searchStatus = &nulint;
+           resp.resultSetStatus = &none;
+           resp.presentStatus = 0;
+       }
+       else
+       {
+           resp.records = 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)
+           {
+               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 = 0;
+               resp.presentStatus = &presst;
+           }
+           else
+           {
+               resp.numberOfRecordsReturned = &nulint;
+               resp.nextResultSetPosition = &next;
+               resp.searchStatus = &sr;
+               resp.resultSetStatus = 0;
+               resp.presentStatus = 0;
+           }
+       }
+    }
 
     if (!z_APDU(assoc->encode, &apdup, 0))
     {