/*
- * Copyright (C) 1994, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
+ * Copyright (c) 1995-2003, Index Data
+ * See the file LICENSE for details.
*
- * $Log: seshigh.c,v $
- * Revision 1.7 1995-03-21 15:53:31 quinn
- * Little changes.
- *
- * Revision 1.6 1995/03/21 12:30:09 quinn
- * Beginning to add support for record packing.
- *
- * Revision 1.5 1995/03/17 10:44:13 quinn
- * Added catch of null-string in makediagrec
- *
- * Revision 1.4 1995/03/17 10:18:08 quinn
- * Added memory management.
- *
- * Revision 1.3 1995/03/16 17:42:39 quinn
- * Little changes
- *
- * 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 seshigh.c
- *
- * Revision 1.10 1995/03/15 15:18:51 quinn
- * Little changes to better support nonblocking I/O
- * Added backend.h
- *
- * Revision 1.9 1995/03/15 13:20:23 adam
- * Yet another bug fix in very dummy_database...
- *
- * Revision 1.8 1995/03/15 11:18:17 quinn
- * Smallish changes.
- *
- * Revision 1.7 1995/03/15 09:40:15 adam
- * Bug fixes in dummy_database_...
- *
- * Revision 1.6 1995/03/15 09:08:30 adam
- * Take care of preferredMessageSize.
- *
- * Revision 1.5 1995/03/15 08:37:44 quinn
- * Now we're pretty much set for nonblocking I/O.
- *
- * Revision 1.4 1995/03/15 08:27:20 adam
- * PresentRequest changed to return MARC records from file 'dummy-records'.
- *
- * Revision 1.3 1995/03/14 16:59:48 quinn
- * Bug-fixes
+ * $Id: seshigh.c,v 1.142 2003-02-18 14:47:23 adam Exp $
+ */
+
+/*
+ * Frontend server logic.
*
- * Revision 1.2 1995/03/14 11:30:14 quinn
- * Works better now.
+ * This code receives incoming APDUs, and handles client requests by means
+ * of the backend API.
*
- * Revision 1.1 1995/03/14 10:28:01 quinn
- * More work on demo server.
+ * Some of the code is getting quite involved, compared to simpler servers -
+ * primarily because it is asynchronous both in the communication with
+ * the user and the backend. We think the complexity will pay off in
+ * the form of greater flexibility when more asynchronous facilities
+ * are implemented.
*
+ * Memory management has become somewhat involved. In the simple case, where
+ * only one PDU is pending at a time, it will simply reuse the same memory,
+ * once it has found its working size. When we enable multiple concurrent
+ * operations, perhaps even with multiple parallel calls to the backend, it
+ * will maintain a pool of buffers for encoding and decoding, trying to
+ * minimize memory allocation/deallocation during normal operation.
*
*/
#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef WIN32
+#include <io.h>
+#define S_ISREG(x) (x & _S_IFREG)
+#include <process.h>
+#include <sys/stat.h>
+#else
+#include <sys/stat.h>
+#include <unistd.h>
+#endif
#include <assert.h>
-#include <comstack.h>
-#include <eventl.h>
-#include <session.h>
-#include <proto.h>
+#include <yaz/yconfig.h>
+#include <yaz/xmalloc.h>
+#include <yaz/comstack.h>
+#include "eventl.h"
+#include "session.h"
+#include <yaz/proto.h>
+#include <yaz/oid.h>
+#include <yaz/log.h>
+#include <yaz/logrpn.h>
+#include <yaz/statserv.h>
+#include <yaz/diagbib1.h>
+#include <yaz/charneg.h>
+#include <yaz/otherinfo.h>
+#include <yaz/yaz-util.h>
-#include <backend.h>
+#include <yaz/srw.h>
+#include <yaz/backend.h>
-#include <iso2709.h>
+static void process_gdu_request(association *assoc, request *req);
+static int process_z_request(association *assoc, request *req, char **msg);
+void backend_response(IOCHAN i, int event);
+static int process_gdu_response(association *assoc, request *req, Z_GDU *res);
+static int process_z_response(association *assoc, request *req, Z_APDU *res);
+static Z_APDU *process_initRequest(association *assoc, request *reqb);
+static Z_APDU *process_searchRequest(association *assoc, request *reqb,
+ int *fd);
+static Z_APDU *response_searchRequest(association *assoc, request *reqb,
+ bend_search_rr *bsrr, int *fd);
+static Z_APDU *process_presentRequest(association *assoc, request *reqb,
+ int *fd);
+static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd);
+static Z_APDU *process_sortRequest(association *assoc, request *reqb, int *fd);
+static void process_close(association *assoc, request *reqb);
+void save_referenceId (request *reqb, Z_ReferenceId *refid);
+static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
+ int *fd);
+static Z_APDU *process_segmentRequest (association *assoc, request *reqb);
-#define ENCODE_BUFFER_SIZE 10000
+static FILE *apduf = 0; /* for use in static mode */
+static statserv_options_block *control_block = 0;
-static int process_apdu(IOCHAN chan);
-static int process_initRequest(IOCHAN client, Z_InitRequest *req);
-static int process_searchRequest(IOCHAN client, Z_SearchRequest *req);
-static int process_presentRequest(IOCHAN client, Z_PresentRequest *req);
+static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd);
+/*
+ * Create and initialize a new association-handle.
+ * channel : iochannel for the current line.
+ * link : communications channel.
+ * Returns: 0 or a new association handle.
+ */
association *create_association(IOCHAN channel, COMSTACK link)
{
- association *new;
+ association *anew;
- if (!(new = malloc(sizeof(*new))))
+ if (!control_block)
+ control_block = statserv_getcontrol();
+ if (!(anew = (association *)xmalloc(sizeof(*anew))))
return 0;
- new->client_chan = channel;
- new->client_link = link;
- if (!(new->decode = odr_createmem(ODR_DECODE)) ||
- !(new->encode = odr_createmem(ODR_ENCODE)))
+ anew->init = 0;
+ anew->client_chan = channel;
+ anew->client_link = link;
+ anew->cs_get_mask = 0;
+ anew->cs_put_mask = 0;
+ anew->cs_accept_mask = 0;
+ if (!(anew->decode = odr_createmem(ODR_DECODE)) ||
+ !(anew->encode = odr_createmem(ODR_ENCODE)))
return 0;
- if (!(new->encode_buffer = malloc(ENCODE_BUFFER_SIZE)))
- return 0;
- odr_setbuf(new->encode, new->encode_buffer, ENCODE_BUFFER_SIZE);
- new->state = ASSOC_UNINIT;
- new->input_buffer = 0;
- new->input_buffer_len = 0;
- return new;
+ if (*control_block->apdufile)
+ {
+ char filename[256];
+ FILE *f;
+
+ strcpy(filename, control_block->apdufile);
+ if (!(anew->print = odr_createmem(ODR_PRINT)))
+ return 0;
+ if (*control_block->apdufile == '@')
+ {
+ odr_setprint(anew->print, yaz_log_file());
+ }
+ else if (*control_block->apdufile != '-')
+ {
+ strcpy(filename, control_block->apdufile);
+ if (!control_block->dynamic)
+ {
+ if (!apduf)
+ {
+ if (!(apduf = fopen(filename, "w")))
+ {
+ yaz_log(LOG_WARN|LOG_ERRNO, "%s", filename);
+ return 0;
+ }
+ setvbuf(apduf, 0, _IONBF, 0);
+ }
+ f = apduf;
+ }
+ else
+ {
+ sprintf(filename + strlen(filename), ".%d", getpid());
+ if (!(f = fopen(filename, "w")))
+ {
+ yaz_log(LOG_WARN|LOG_ERRNO, "%s", filename);
+ return 0;
+ }
+ setvbuf(f, 0, _IONBF, 0);
+ }
+ odr_setprint(anew->print, f);
+ }
+ }
+ else
+ anew->print = 0;
+ anew->input_buffer = 0;
+ anew->input_buffer_len = 0;
+ anew->backend = 0;
+ anew->state = ASSOC_NEW;
+ request_initq(&anew->incoming);
+ request_initq(&anew->outgoing);
+ anew->proto = cs_getproto(link);
+ return anew;
}
+/*
+ * Free association and release resources.
+ */
void destroy_association(association *h)
{
+ statserv_options_block *cb = statserv_getcontrol();
+
+ xfree(h->init);
odr_destroy(h->decode);
odr_destroy(h->encode);
- free(h->encode_buffer);
+ if (h->print)
+ odr_destroy(h->print);
if (h->input_buffer)
- free(h->input_buffer);
- free(h);
+ xfree(h->input_buffer);
+ if (h->backend)
+ (*cb->bend_close)(h->backend);
+ while (request_deq(&h->incoming));
+ while (request_deq(&h->outgoing));
+ request_delq(&h->incoming);
+ request_delq(&h->outgoing);
+ xfree(h);
+ xmalloc_trav("session closed");
+ if (control_block && control_block->one_shot)
+ {
+ exit (0);
+ }
+}
+
+static void do_close_req(association *a, int reason, char *message,
+ request *req)
+{
+ Z_APDU apdu;
+ Z_Close *cls = zget_Close(a->encode);
+
+ /* Purge request queue */
+ while (request_deq(&a->incoming));
+ while (request_deq(&a->outgoing));
+ if (a->version >= 3)
+ {
+ yaz_log(LOG_LOG, "Sending Close PDU, reason=%d, message=%s",
+ reason, message ? message : "none");
+ apdu.which = Z_APDU_close;
+ apdu.u.close = cls;
+ *cls->closeReason = reason;
+ cls->diagnosticInformation = message;
+ process_z_response(a, req, &apdu);
+ iochan_settimeout(a->client_chan, 20);
+ }
+ else
+ {
+ yaz_log(LOG_DEBUG, "v2 client. No Close PDU");
+ iochan_setevent(a->client_chan, EVENT_TIMEOUT); /* force imm close */
+ }
+ a->state = ASSOC_DEAD;
}
+static void do_close(association *a, int reason, char *message)
+{
+ do_close_req (a, reason, message, request_get(&a->outgoing));
+}
+
+/*
+ * This is where PDUs from the client are read and the further
+ * processing is initiated. Flow of control moves down through the
+ * various process_* functions below, until the encoded result comes back up
+ * to the output handler in here.
+ *
+ * h : the I/O channel that has an outstanding event.
+ * event : the current outstanding event.
+ */
void ir_session(IOCHAN h, int event)
{
int res;
- association *assoc = iochan_getdata(h);
+ association *assoc = (association *)iochan_getdata(h);
COMSTACK conn = assoc->client_link;
+ request *req;
+
+ assert(h && conn && assoc);
+ if (event == EVENT_TIMEOUT)
+ {
+ if (assoc->state != ASSOC_UP)
+ {
+ yaz_log(LOG_LOG, "Final timeout - closing connection.");
+ cs_close(conn);
+ destroy_association(assoc);
+ iochan_destroy(h);
+ }
+ else
+ {
+ yaz_log(LOG_LOG, "Session idle too long. Sending close.");
+ do_close(assoc, Z_Close_lackOfActivity, 0);
+ }
+ return;
+ }
+ if (event & assoc->cs_accept_mask)
+ {
+ yaz_log (LOG_DEBUG, "ir_session (accept)");
+ if (!cs_accept (conn))
+ {
+ yaz_log (LOG_LOG, "accept failed");
+ destroy_association(assoc);
+ iochan_destroy(h);
+ }
+ iochan_clearflag (h, EVENT_OUTPUT|EVENT_OUTPUT);
+ if (conn->io_pending)
+ { /* cs_accept didn't complete */
+ assoc->cs_accept_mask =
+ ((conn->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
+ ((conn->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
- if (event == EVENT_INPUT)
+ iochan_setflag (h, assoc->cs_accept_mask);
+ }
+ else
+ { /* cs_accept completed. Prepare for reading (cs_get) */
+ assoc->cs_accept_mask = 0;
+ assoc->cs_get_mask = EVENT_INPUT;
+ iochan_setflag (h, assoc->cs_get_mask);
+ }
+ return;
+ }
+ if ((event & assoc->cs_get_mask) || (event & EVENT_WORK)) /* input */
{
- assert(assoc && conn);
- res = cs_get(conn, &assoc->input_buffer, &assoc->input_buffer_len);
- switch (res)
+ if ((assoc->cs_put_mask & EVENT_INPUT) == 0 && (event & assoc->cs_get_mask))
{
- case 0: case -1: /* connection closed by peer */
- fprintf(stderr, "Closed connection\n");
+ yaz_log(LOG_DEBUG, "ir_session (input)");
+ /* We aren't speaking to this fellow */
+ if (assoc->state == ASSOC_DEAD)
+ {
+ yaz_log(LOG_LOG, "Connection closed - end of session");
+ cs_close(conn);
+ destroy_association(assoc);
+ iochan_destroy(h);
+ return;
+ }
+ assoc->cs_get_mask = EVENT_INPUT;
+ if ((res = cs_get(conn, &assoc->input_buffer,
+ &assoc->input_buffer_len)) <= 0)
+ {
+ yaz_log(LOG_LOG, "Connection closed by client");
cs_close(conn);
destroy_association(assoc);
iochan_destroy(h);
return;
- case 1: /* incomplete read */
+ }
+ else if (res == 1) /* incomplete read - wait for more */
+ {
+ if (conn->io_pending & CS_WANT_WRITE)
+ assoc->cs_get_mask |= EVENT_OUTPUT;
+ iochan_setflag(h, assoc->cs_get_mask);
return;
- default: /* data! */
- assoc->input_apdu_len = res;
- if (process_apdu(h) < 0)
- {
- fprintf(stderr, "Operation failed\n");
- cs_close(conn);
- destroy_association(assoc);
- iochan_destroy(h);
- }
- else if (cs_more(conn)) /* arrange to be called again */
- iochan_setevent(h, EVENT_INPUT);
+ }
+ if (cs_more(conn)) /* more stuff - call us again later, please */
+ iochan_setevent(h, EVENT_INPUT);
+
+ /* we got a complete PDU. Let's decode it */
+ yaz_log(LOG_DEBUG, "Got PDU, %d bytes: lead=%02X %02X %02X", res,
+ assoc->input_buffer[0] & 0xff,
+ assoc->input_buffer[1] & 0xff,
+ assoc->input_buffer[2] & 0xff);
+ req = request_get(&assoc->incoming); /* get a new request structure */
+ odr_reset(assoc->decode);
+ odr_setbuf(assoc->decode, assoc->input_buffer, res, 0);
+ if (!z_GDU(assoc->decode, &req->gdu_request, 0, 0))
+ {
+ yaz_log(LOG_LOG, "ODR error on incoming PDU: %s [near byte %d] ",
+ odr_errmsg(odr_geterror(assoc->decode)),
+ odr_offset(assoc->decode));
+ if (assoc->decode->error != OHTTP)
+ {
+ yaz_log(LOG_LOG, "PDU dump:");
+ odr_dumpBER(yaz_log_file(), assoc->input_buffer, res);
+ do_close(assoc, Z_Close_protocolError, "Malformed package");
+ }
+ else
+ {
+ Z_GDU *p = z_get_HTTP_Response(assoc->encode, 400);
+ assoc->state = ASSOC_DEAD;
+ process_gdu_response(assoc, req, p);
+ }
+ return;
+ }
+ req->request_mem = odr_extract_mem(assoc->decode);
+ if (assoc->print && !z_GDU(assoc->print, &req->gdu_request, 0, 0))
+ {
+ yaz_log(LOG_WARN, "ODR print error: %s",
+ odr_errmsg(odr_geterror(assoc->print)));
+ odr_reset(assoc->print);
+ }
+ request_enq(&assoc->incoming, req);
+ }
+
+ /* can we do something yet? */
+ req = request_head(&assoc->incoming);
+ if (req->state == REQUEST_IDLE)
+ {
+ request_deq(&assoc->incoming);
+ process_gdu_request(assoc, req);
}
}
- else if (event == EVENT_OUTPUT)
+ if (event & assoc->cs_put_mask)
{
- switch (res = cs_put(conn, assoc->encode_buffer, assoc->encoded_len))
+ request *req = request_head(&assoc->outgoing);
+
+ assoc->cs_put_mask = 0;
+ yaz_log(LOG_DEBUG, "ir_session (output)");
+ req->state = REQUEST_PENDING;
+ switch (res = cs_put(conn, req->response, req->len_response))
{
- case -1:
- fprintf(stderr, "Closed connection\n");
- cs_close(conn);
- destroy_association(assoc);
- iochan_destroy(h);
- case 0: /* all sent */
- iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset */
- break;
- case 1: /* partial send */
- break; /* we'll get called again */
+ case -1:
+ yaz_log(LOG_LOG, "Connection closed by client");
+ cs_close(conn);
+ destroy_association(assoc);
+ iochan_destroy(h);
+ break;
+ case 0: /* all sent - release the request structure */
+ yaz_log(LOG_DEBUG, "Wrote PDU, %d bytes", req->len_response);
+#if 0
+ yaz_log(LOG_DEBUG, "HTTP out:\n%.*s", req->len_response,
+ req->response);
+#endif
+ nmem_destroy(req->request_mem);
+ request_deq(&assoc->outgoing);
+ request_release(req);
+ if (!request_head(&assoc->outgoing))
+ { /* restore mask for cs_get operation ... */
+ iochan_clearflag(h, EVENT_OUTPUT|EVENT_INPUT);
+ iochan_setflag(h, assoc->cs_get_mask);
+ if (assoc->state == ASSOC_DEAD)
+ iochan_setevent(assoc->client_chan, EVENT_TIMEOUT);
+ }
+ else
+ {
+ assoc->cs_put_mask = EVENT_OUTPUT;
+ }
+ break;
+ default:
+ if (conn->io_pending & CS_WANT_WRITE)
+ assoc->cs_put_mask |= EVENT_OUTPUT;
+ if (conn->io_pending & CS_WANT_READ)
+ assoc->cs_put_mask |= EVENT_INPUT;
+ iochan_setflag(h, assoc->cs_put_mask);
}
}
- else if (event == EVENT_EXCEPT)
+ if (event & EVENT_EXCEPT)
{
- fprintf(stderr, "Exception on line\n");
+ yaz_log(LOG_LOG, "ir_session (exception)");
cs_close(conn);
destroy_association(assoc);
iochan_destroy(h);
}
}
-static int process_apdu(IOCHAN chan)
+static int process_z_request(association *assoc, request *req, char **msg);
+
+static int srw_bend_init(association *assoc)
{
- Z_APDU *apdu;
- int res;
- association *assoc = iochan_getdata(chan);
+ bend_initresult *binitres;
+ statserv_options_block *cb = statserv_getcontrol();
+
+ assoc->init = (bend_initrequest *) xmalloc (sizeof(*assoc->init));
+
+ assoc->init->stream = assoc->encode;
+ assoc->init->print = assoc->print;
+ assoc->init->auth = 0;
+ assoc->init->referenceId = 0;
+ assoc->init->implementation_version = 0;
+ assoc->init->implementation_id = 0;
+ assoc->init->implementation_name = 0;
+ assoc->init->bend_sort = NULL;
+ assoc->init->bend_search = NULL;
+ assoc->init->bend_present = NULL;
+ assoc->init->bend_esrequest = NULL;
+ assoc->init->bend_delete = NULL;
+ assoc->init->bend_scan = NULL;
+ assoc->init->bend_segment = NULL;
+ assoc->init->bend_fetch = NULL;
+ assoc->init->charneg_request = NULL;
+ assoc->init->charneg_response = NULL;
+ assoc->init->decode = assoc->decode;
+
+ assoc->init->peer_name =
+ odr_strdup (assoc->encode, cs_addrstr(assoc->client_link));
+ if (!(binitres = (*cb->bend_init)(assoc->init)))
+ {
+ yaz_log(LOG_WARN, "Bad response from backend.");
+ return 0;
+ }
+ assoc->backend = binitres->handle;
+ return 1;
+}
+
+static void srw_bend_fetch(association *assoc, int pos,
+ Z_SRW_searchRetrieveRequest *srw_req,
+ Z_SRW_record *record)
+{
+ bend_fetch_rr rr;
+ ODR o = assoc->encode;
+
+ rr.setname = "default";
+ rr.number = pos;
+ rr.referenceId = 0;
+ rr.request_format = VAL_TEXT_XML;
+ rr.request_format_raw = yaz_oidval_to_z3950oid(assoc->decode,
+ CLASS_TRANSYN,
+ VAL_TEXT_XML);
+ rr.comp = (Z_RecordComposition *)
+ odr_malloc(assoc->decode, sizeof(*rr.comp));
+ rr.comp->which = Z_RecordComp_complex;
+ rr.comp->u.complex = (Z_CompSpec *)
+ odr_malloc(assoc->decode, sizeof(Z_CompSpec));
+ rr.comp->u.complex->selectAlternativeSyntax = (bool_t *)
+ odr_malloc(assoc->encode, sizeof(bool_t));
+ *rr.comp->u.complex->selectAlternativeSyntax = 0;
+ rr.comp->u.complex->num_dbSpecific = 0;
+ rr.comp->u.complex->dbSpecific = 0;
+ rr.comp->u.complex->num_recordSyntax = 0;
+ rr.comp->u.complex->recordSyntax = 0;
+
+ rr.comp->u.complex->generic = (Z_Specification *)
+ odr_malloc(assoc->decode, sizeof(Z_Specification));
+ rr.comp->u.complex->generic->which = Z_Schema_uri;
+ rr.comp->u.complex->generic->schema.uri = srw_req->recordSchema;
+ rr.comp->u.complex->generic->elementSpec = 0;
+
+ rr.stream = assoc->encode;
+ rr.print = assoc->print;
+
+ rr.basename = 0;
+ rr.len = 0;
+ rr.record = 0;
+ rr.last_in_set = 0;
+ rr.output_format = VAL_TEXT_XML;
+ rr.output_format_raw = 0;
+ rr.errcode = 0;
+ rr.errstring = 0;
+ rr.surrogate_flag = 0;
+
+ (*assoc->init->bend_fetch)(assoc->backend, &rr);
+
+ if (rr.len >= 0)
+ {
+ record->recordData_buf = rr.record;
+ record->recordData_len = rr.len;
+ record->recordPosition = odr_intdup(o, pos);
+ record->recordSchema = 0;
+ if (srw_req->recordSchema)
+ record->recordSchema = odr_strdup(o, srw_req->recordSchema);
+ }
+}
+
+static void srw_bend_search(association *assoc, request *req,
+ Z_SRW_searchRetrieveRequest *srw_req,
+ Z_SRW_searchRetrieveResponse *srw_res)
+{
+ char *base = "Default";
+ bend_search_rr rr;
+ Z_External *ext;
+
+ yaz_log(LOG_LOG, "Got SRW SearchRetrieveRequest");
+
+ if (!assoc->init)
+ srw_bend_init(assoc);
+
+ rr.setname = "default";
+ rr.replace_set = 1;
+ rr.num_bases = 1;
+ rr.basenames = &srw_req->database;
+ rr.referenceId = 0;
+
+ ext = (Z_External *) odr_malloc(assoc->decode, sizeof(*ext));
+ ext->direct_reference = odr_getoidbystr(assoc->decode,
+ "1.2.840.10003.16.2");
+ ext->indirect_reference = 0;
+ ext->descriptor = 0;
+ ext->which = Z_External_CQL;
+ if (srw_req->query)
+ ext->u.cql = srw_req->query;
+ else
+ ext->u.cql = "noterm";
+
+ rr.query = (Z_Query *) odr_malloc (assoc->decode, sizeof(*rr.query));
+ rr.query->which = Z_Query_type_104;
+ rr.query->u.type_104 = ext;
+
+ rr.stream = assoc->encode;
+ rr.decode = assoc->decode;
+ rr.print = assoc->print;
+ rr.request = req;
+ rr.association = assoc;
+ rr.fd = 0;
+ rr.hits = 0;
+ rr.errcode = 0;
+ rr.errstring = 0;
+ rr.search_info = 0;
+ yaz_log_zquery(rr.query);
+ (assoc->init->bend_search)(assoc->backend, &rr);
+ srw_res->numberOfRecords = odr_intdup(assoc->encode, rr.hits);
+ if (rr.errcode)
+ {
+ srw_res->num_diagnostics = 1;
+ srw_res->diagnostics = (Z_SRW_diagnostic *)
+ odr_malloc(assoc->encode, sizeof(*srw_res->diagnostics));
+ srw_res->diagnostics[0].code =
+ odr_intdup(assoc->encode, rr.errcode);
+ srw_res->diagnostics[0].details = rr.errstring;
+ }
+ else
+ {
+ srw_res->numberOfRecords = odr_intdup(assoc->encode, rr.hits);
+ if (srw_req->maximumRecords && *srw_req->maximumRecords > 0)
+ {
+ int number = *srw_req->maximumRecords;
+ int start = 1;
+ int i;
+ if (srw_req->startRecord)
+ start = *srw_req->startRecord;
+ if (start <= rr.hits)
+ {
+ int j = 0;
+ if (start + number > rr.hits)
+ number = rr.hits - start + 1;
+ srw_res->records = (Z_SRW_record *)
+ odr_malloc(assoc->encode,
+ number * sizeof(*srw_res->records));
+ for (i = 0; i<number; i++)
+ {
+ srw_res->records[j].recordData_buf = 0;
+ srw_bend_fetch(assoc, i+start, srw_req,
+ srw_res->records + j);
+ if (srw_res->records[j].recordData_buf)
+ j++;
+ }
+ srw_res->num_records = j;
+ if (!j)
+ srw_res->records = 0;
+ }
+ }
+ }
+}
+
+static void process_http_request(association *assoc, request *req)
+{
+ Z_HTTP_Request *hreq = req->gdu_request->u.HTTP_Request;
+ ODR o = assoc->encode;
+ Z_GDU *p = 0;
+ Z_HTTP_Response *hres = 0;
+ int keepalive = 1;
+
+ if (!strcmp(hreq->method, "GET"))
+ {
+#ifdef DOCDIR
+ if (strlen(hreq->path) >= 5 && strlen(hreq->path) < 80 &&
+ !memcmp(hreq->path, "/doc/", 5))
+ {
+ FILE *f;
+ char fpath[120];
+
+ strcpy(fpath, DOCDIR);
+ strcat(fpath, hreq->path+4);
+ f = fopen(fpath, "rb");
+ if (f) {
+ struct stat sbuf;
+ if (fstat(fileno(f), &sbuf) || !S_ISREG(sbuf.st_mode))
+ {
+ fclose(f);
+ f = 0;
+ }
+ }
+ if (f)
+ {
+ long sz;
+ fseek(f, 0L, SEEK_END);
+ sz = ftell(f);
+ if (sz >= 0 && sz < 500000)
+ {
+ const char *ctype = "application/octet-stream";
+ const char *cp;
+
+ p = z_get_HTTP_Response(o, 200);
+ hres = p->u.HTTP_Response;
+ hres->content_buf = (char *) odr_malloc(o, sz + 1);
+ hres->content_len = sz;
+ fseek(f, 0L, SEEK_SET);
+ fread(hres->content_buf, 1, sz, f);
+ if ((cp = strrchr(fpath, '.'))) {
+ cp++;
+ if (!strcmp(cp, "png"))
+ ctype = "image/png";
+ else if (!strcmp(cp, "gif"))
+ ctype = "image/gif";
+ else if (!strcmp(cp, "xml"))
+ ctype = "text/xml";
+ else if (!strcmp(cp, "html"))
+ ctype = "text/html";
+ }
+ z_HTTP_header_add(o, &hres->headers, "Content-Type", ctype);
+ }
+ fclose(f);
+ }
+ }
+#endif
+ if (!strcmp(hreq->path, "/"))
+ {
+#ifdef DOCDIR
+ struct stat sbuf;
+#endif
+ const char *doclink = "";
+ p = z_get_HTTP_Response(o, 200);
+ hres = p->u.HTTP_Response;
+ hres->content_buf = (char *) odr_malloc(o, 400);
+#ifdef DOCDIR
+ if (stat(DOCDIR "/yaz.html", &sbuf) == 0 && S_ISREG(sbuf.st_mode))
+ doclink = "<P><A HREF=\"/doc/yaz.html\">Documentation</A></P>";
+#endif
+ sprintf (hres->content_buf,
+ "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
+ "<HTML>\n"
+ " <HEAD>\n"
+ " <TITLE>YAZ " YAZ_VERSION "</TITLE>\n"
+ " </HEAD>\n"
+ " <BODY>\n"
+ " <P><A HREF=\"http://www.indexdata.dk/yaz/\">YAZ</A> "
+ YAZ_VERSION "</P>\n"
+ "%s"
+ " </BODY>\n"
+ "</HTML>\n", doclink);
+ hres->content_len = strlen(hres->content_buf);
+ z_HTTP_header_add(o, &hres->headers, "Content-Type", "text/html");
+ }
+ if (!p)
+ {
+ p = z_get_HTTP_Response(o, 404);
+ }
+ }
+ else if (!strcmp(hreq->method, "POST"))
+ {
+ const char *content_type = z_HTTP_header_lookup(hreq->headers,
+ "Content-Type");
+ const char *soap_action = z_HTTP_header_lookup(hreq->headers,
+ "SOAPAction");
+ if (content_type && soap_action &&
+ !yaz_strcmp_del("text/xml", content_type, "; "))
+ {
+ Z_SOAP *soap_package = 0;
+ int ret = -1;
+ int http_code = 500;
+
+ static Z_SOAP_Handler soap_handlers[2] = {
+#if HAVE_XML2
+ {"http://www.loc.gov/zing/srw/v1.0/", 0,
+ (Z_SOAP_fun) yaz_srw_codec},
+#endif
+ {0, 0, 0}
+ };
+ ret = z_soap_codec(assoc->decode, &soap_package,
+ &hreq->content_buf, &hreq->content_len,
+ soap_handlers);
+
+#if HAVE_XML2
+ if (!ret && soap_package->which == Z_SOAP_generic &&
+ soap_package->u.generic->no == 0)
+ {
+ /* SRW package */
+ Z_SRW_searchRetrieve *sr = soap_package->u.generic->p;
+
+ if (sr->which == Z_SRW_searchRetrieve_request)
+ {
+ Z_SRW_searchRetrieve *res =
+ yaz_srw_get(assoc->encode,
+ Z_SRW_searchRetrieve_response);
+
+ if (!sr->u.request->database)
+ {
+ const char *p0 = hreq->path, *p1;
+ if (*p0 == '/')
+ p0++;
+ p1 = strchr(p0, '?');
+ if (!p1)
+ p1 = p0 + strlen(p0);
+ if (p1 != p0)
+ {
+ sr->u.request->database =
+ odr_malloc(assoc->decode, p1 - p0 + 1);
+ memcpy (sr->u.request->database, p0, p1 - p0);
+ sr->u.request->database[p1 - p0] = '\0';
+ }
+ else
+ sr->u.request->database = "Default";
+ }
+ srw_bend_search(assoc, req, sr->u.request,
+ res->u.response);
+
+ soap_package->u.generic->p = res;
+ http_code = 200;
+ }
+ }
+#endif
+ p = z_get_HTTP_Response(o, 200);
+ hres = p->u.HTTP_Response;
+ ret = z_soap_codec(assoc->encode, &soap_package,
+ &hres->content_buf, &hres->content_len,
+ soap_handlers);
+ hres->code = http_code;
+ z_HTTP_header_add(o, &hres->headers, "Content-Type", "text/xml");
+ }
+ if (!p) /* still no response ? */
+ p = z_get_HTTP_Response(o, 500);
+ }
+ else
+ {
+ p = z_get_HTTP_Response(o, 405);
+ hres = p->u.HTTP_Response;
+
+ z_HTTP_header_add(o, &hres->headers, "Allow", "GET, POST");
+ }
+ hres = p->u.HTTP_Response;
+ if (!strcmp(hreq->version, "1.0"))
+ {
+ const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
+ if (v && !strcmp(v, "Keep-Alive"))
+ keepalive = 1;
+ else
+ keepalive = 0;
+ hres->version = "1.0";
+ }
+ else
+ {
+ const char *v = z_HTTP_header_lookup(hreq->headers, "Connection");
+ if (v && !strcmp(v, "close"))
+ keepalive = 0;
+ else
+ keepalive = 1;
+ hres->version = "1.1";
+ }
+ if (!keepalive)
+ {
+ z_HTTP_header_add(o, &hres->headers, "Connection", "close");
+ assoc->state = ASSOC_DEAD;
+ }
+ else
+ {
+ int t;
+ const char *alive = z_HTTP_header_lookup(hreq->headers, "Keep-Alive");
+
+ if (alive && isdigit(*alive))
+ t = atoi(alive);
+ else
+ t = 30;
+ if (t < 0 || t > 3600)
+ t = 3600;
+ iochan_settimeout(assoc->client_chan,t);
+ z_HTTP_header_add(o, &hres->headers, "Connection", "Keep-Alive");
+ }
+ process_gdu_response(assoc, req, p);
+}
+
+static void process_gdu_request(association *assoc, request *req)
+{
+ if (req->gdu_request->which == Z_GDU_Z3950)
+ {
+ char *msg = 0;
+ req->apdu_request = req->gdu_request->u.z3950;
+ if (process_z_request(assoc, req, &msg) < 0)
+ do_close_req(assoc, Z_Close_systemProblem, msg, req);
+ }
+ else if (req->gdu_request->which == Z_GDU_HTTP_Request)
+ process_http_request(assoc, req);
+ else
+ {
+ do_close_req(assoc, Z_Close_systemProblem, "bad protocol packet", req);
+ }
+}
- odr_setbuf(assoc->decode, assoc->input_buffer, assoc->input_apdu_len);
- if (!z_APDU(assoc->decode, &apdu, 0))
+/*
+ * Initiate request processing.
+ */
+static int process_z_request(association *assoc, request *req, char **msg)
+{
+ int fd = -1;
+ Z_APDU *res;
+ int retval;
+
+ *msg = "Unknown Error";
+ assert(req && req->state == REQUEST_IDLE);
+ if (req->apdu_request->which != Z_APDU_initRequest && !assoc->init)
+ {
+ *msg = "Missing InitRequest";
+ return -1;
+ }
+ switch (req->apdu_request->which)
{
- odr_perror(assoc->decode, "Incoming APDU");
+ case Z_APDU_initRequest:
+ iochan_settimeout(assoc->client_chan,
+ statserv_getcontrol()->idle_timeout * 60);
+ res = process_initRequest(assoc, req); break;
+ case Z_APDU_searchRequest:
+ res = process_searchRequest(assoc, req, &fd); break;
+ case Z_APDU_presentRequest:
+ res = process_presentRequest(assoc, req, &fd); break;
+ case Z_APDU_scanRequest:
+ if (assoc->init->bend_scan)
+ res = process_scanRequest(assoc, req, &fd);
+ else
+ {
+ *msg = "Cannot handle Scan APDU";
+ return -1;
+ }
+ break;
+ case Z_APDU_extendedServicesRequest:
+ if (assoc->init->bend_esrequest)
+ res = process_ESRequest(assoc, req, &fd);
+ else
+ {
+ *msg = "Cannot handle Extended Services APDU";
+ return -1;
+ }
+ break;
+ case Z_APDU_sortRequest:
+ if (assoc->init->bend_sort)
+ res = process_sortRequest(assoc, req, &fd);
+ else
+ {
+ *msg = "Cannot handle Sort APDU";
+ return -1;
+ }
+ break;
+ case Z_APDU_close:
+ process_close(assoc, req);
+ return 0;
+ case Z_APDU_deleteResultSetRequest:
+ if (assoc->init->bend_delete)
+ res = process_deleteRequest(assoc, req, &fd);
+ else
+ {
+ *msg = "Cannot handle Delete APDU";
+ return -1;
+ }
+ break;
+ case Z_APDU_segmentRequest:
+ if (assoc->init->bend_segment)
+ {
+ res = process_segmentRequest (assoc, req);
+ }
+ else
+ {
+ *msg = "Cannot handle Segment APDU";
+ return -1;
+ }
+ break;
+ default:
+ *msg = "Bad APDU received";
return -1;
}
- switch (apdu->which)
+ if (res)
+ {
+ yaz_log(LOG_DEBUG, " result immediately available");
+ retval = process_z_response(assoc, req, res);
+ }
+ else if (fd < 0)
+ {
+ yaz_log(LOG_DEBUG, " result unavailble");
+ retval = 0;
+ }
+ else /* no result yet - one will be provided later */
+ {
+ IOCHAN chan;
+
+ /* Set up an I/O handler for the fd supplied by the backend */
+
+ yaz_log(LOG_DEBUG, " establishing handler for result");
+ req->state = REQUEST_PENDING;
+ if (!(chan = iochan_create(fd, backend_response, EVENT_INPUT)))
+ abort();
+ iochan_setdata(chan, assoc);
+ retval = 0;
+ }
+ return retval;
+}
+
+/*
+ * Handle message from the backend.
+ */
+void backend_response(IOCHAN i, int event)
+{
+ association *assoc = (association *)iochan_getdata(i);
+ request *req = request_head(&assoc->incoming);
+ Z_APDU *res;
+ int fd;
+
+ yaz_log(LOG_DEBUG, "backend_response");
+ assert(assoc && req && req->state != REQUEST_IDLE);
+ /* determine what it is we're waiting for */
+ switch (req->apdu_request->which)
{
- case Z_APDU_initRequest:
- res = process_initRequest(chan, apdu->u.initRequest); break;
case Z_APDU_searchRequest:
- res = process_searchRequest(chan, apdu->u.searchRequest); break;
+ res = response_searchRequest(assoc, req, 0, &fd); break;
+#if 0
case Z_APDU_presentRequest:
- res = process_presentRequest(chan, apdu->u.presentRequest); break;
+ res = response_presentRequest(assoc, req, 0, &fd); break;
+ case Z_APDU_scanRequest:
+ res = response_scanRequest(assoc, req, 0, &fd); break;
+#endif
default:
- fprintf(stderr, "Bad APDU\n");
- return -1;
+ yaz_log(LOG_WARN, "Serious programmer's lapse or bug");
+ abort();
+ }
+ if ((res && process_z_response(assoc, req, res) < 0) || fd < 0)
+ {
+ yaz_log(LOG_LOG, "Fatal error when talking to backend");
+ do_close(assoc, Z_Close_systemProblem, 0);
+ iochan_destroy(i);
+ return;
+ }
+ else if (!res) /* no result yet - try again later */
+ {
+ yaz_log(LOG_DEBUG, " no result yet");
+ iochan_setfd(i, fd); /* in case fd has changed */
+ }
+}
+
+/*
+ * Encode response, and transfer the request structure to the outgoing queue.
+ */
+static int process_gdu_response(association *assoc, request *req, Z_GDU *res)
+{
+ odr_setbuf(assoc->encode, req->response, req->size_response, 1);
+
+ if (assoc->print && !z_GDU(assoc->print, &res, 0, 0))
+ {
+ yaz_log(LOG_WARN, "ODR print error: %s",
+ odr_errmsg(odr_geterror(assoc->print)));
+ odr_reset(assoc->print);
}
- odr_reset(assoc->decode);
- return res;
+ if (!z_GDU(assoc->encode, &res, 0, 0))
+ {
+ yaz_log(LOG_WARN, "ODR error when encoding response: %s",
+ odr_errmsg(odr_geterror(assoc->decode)));
+ return -1;
+ }
+ req->response = odr_getbuf(assoc->encode, &req->len_response,
+ &req->size_response);
+ odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
+ odr_reset(assoc->encode);
+ req->state = REQUEST_IDLE;
+ request_enq(&assoc->outgoing, req);
+ /* turn the work over to the ir_session handler */
+ iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
+ assoc->cs_put_mask = EVENT_OUTPUT;
+ /* Is there more work to be done? give that to the input handler too */
+#if 1
+ if (request_head(&assoc->incoming))
+ {
+ yaz_log (LOG_DEBUG, "more work to be done");
+ iochan_setevent(assoc->client_chan, EVENT_WORK);
+ }
+#endif
+ return 0;
+}
+
+/*
+ * Encode response, and transfer the request structure to the outgoing queue.
+ */
+static int process_z_response(association *assoc, request *req, Z_APDU *res)
+{
+ odr_setbuf(assoc->encode, req->response, req->size_response, 1);
+
+ if (assoc->print && !z_APDU(assoc->print, &res, 0, 0))
+ {
+ yaz_log(LOG_WARN, "ODR print error: %s",
+ odr_errmsg(odr_geterror(assoc->print)));
+ odr_reset(assoc->print);
+ }
+ if (!z_APDU(assoc->encode, &res, 0, 0))
+ {
+ yaz_log(LOG_WARN, "ODR error when encoding response: %s",
+ odr_errmsg(odr_geterror(assoc->decode)));
+ return -1;
+ }
+ req->response = odr_getbuf(assoc->encode, &req->len_response,
+ &req->size_response);
+ odr_setbuf(assoc->encode, 0, 0, 0); /* don'txfree if we abort later */
+ odr_reset(assoc->encode);
+ req->state = REQUEST_IDLE;
+ request_enq(&assoc->outgoing, req);
+ /* turn the work over to the ir_session handler */
+ iochan_setflag(assoc->client_chan, EVENT_OUTPUT);
+ assoc->cs_put_mask = EVENT_OUTPUT;
+ /* Is there more work to be done? give that to the input handler too */
+#if 1
+ if (request_head(&assoc->incoming))
+ {
+ yaz_log (LOG_DEBUG, "more work to be done");
+ iochan_setevent(assoc->client_chan, EVENT_WORK);
+ }
+#endif
+ return 0;
}
-static int process_initRequest(IOCHAN client, Z_InitRequest *req)
+/*
+ * Handle init request.
+ * At the moment, we don't check the options
+ * anywhere else in the code - we just try not to do anything that would
+ * break a naive client. We'll toss 'em into the association block when
+ * we need them there.
+ */
+static Z_APDU *process_initRequest(association *assoc, request *reqb)
{
- Z_APDU apdu, *apdup;
- Z_InitResponse resp;
- bool_t result = 1;
- association *assoc = iochan_getdata(client);
- bend_initrequest binitreq;
+ statserv_options_block *cb = statserv_getcontrol();
+ Z_InitRequest *req = reqb->apdu_request->u.initRequest;
+ Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_initResponse);
+ Z_InitResponse *resp = apdu->u.initResponse;
bend_initresult *binitres;
- fprintf(stderr, "Got initRequest.\n");
+ char options[140];
+
+ xfree (assoc->init);
+ assoc->init = (bend_initrequest *) xmalloc (sizeof(*assoc->init));
+
+ yaz_log(LOG_LOG, "Got initRequest");
if (req->implementationId)
- fprintf(stderr, "Id: %s\n", req->implementationId);
+ yaz_log(LOG_LOG, "Id: %s", req->implementationId);
if (req->implementationName)
- fprintf(stderr, "Name: %s\n", req->implementationName);
+ yaz_log(LOG_LOG, "Name: %s", req->implementationName);
if (req->implementationVersion)
- fprintf(stderr, "Version: %s\n", req->implementationVersion);
+ yaz_log(LOG_LOG, "Version: %s", req->implementationVersion);
+
+ assoc->init->stream = assoc->encode;
+ assoc->init->print = assoc->print;
+ assoc->init->auth = req->idAuthentication;
+ assoc->init->referenceId = req->referenceId;
+ assoc->init->implementation_version = 0;
+ assoc->init->implementation_id = 0;
+ assoc->init->implementation_name = 0;
+ assoc->init->bend_sort = NULL;
+ assoc->init->bend_search = NULL;
+ assoc->init->bend_present = NULL;
+ assoc->init->bend_esrequest = NULL;
+ assoc->init->bend_delete = NULL;
+ assoc->init->bend_scan = NULL;
+ assoc->init->bend_segment = NULL;
+ assoc->init->bend_fetch = NULL;
+ assoc->init->charneg_request = NULL;
+ assoc->init->charneg_response = NULL;
+ assoc->init->decode = assoc->decode;
- binitreq.configname = "default-config";
- if (!(binitres = bend_init(&binitreq)) || binitres->errcode)
+ if (ODR_MASK_GET(req->options, Z_Options_negotiationModel))
{
- fprintf(stderr, "Bad response from backend\n");
- return -1;
+ Z_CharSetandLanguageNegotiation *negotiation =
+ yaz_get_charneg_record (req->otherInfo);
+ if (negotiation->which == Z_CharSetandLanguageNegotiation_proposal)
+ assoc->init->charneg_request = negotiation;
+ }
+
+ assoc->init->peer_name =
+ odr_strdup (assoc->encode, cs_addrstr(assoc->client_link));
+ if (!(binitres = (*cb->bend_init)(assoc->init)))
+ {
+ yaz_log(LOG_WARN, "Bad response from backend.");
+ return 0;
+ }
+
+ assoc->backend = binitres->handle;
+ if ((assoc->init->bend_sort))
+ yaz_log (LOG_DEBUG, "Sort handler installed");
+ if ((assoc->init->bend_search))
+ yaz_log (LOG_DEBUG, "Search handler installed");
+ if ((assoc->init->bend_present))
+ yaz_log (LOG_DEBUG, "Present handler installed");
+ if ((assoc->init->bend_esrequest))
+ yaz_log (LOG_DEBUG, "ESRequest handler installed");
+ if ((assoc->init->bend_delete))
+ yaz_log (LOG_DEBUG, "Delete handler installed");
+ if ((assoc->init->bend_scan))
+ yaz_log (LOG_DEBUG, "Scan handler installed");
+ if ((assoc->init->bend_segment))
+ yaz_log (LOG_DEBUG, "Segment handler installed");
+
+ resp->referenceId = req->referenceId;
+ *options = '\0';
+ /* let's tell the client what we can do */
+ if (ODR_MASK_GET(req->options, Z_Options_search))
+ {
+ ODR_MASK_SET(resp->options, Z_Options_search);
+ strcat(options, "srch");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_present))
+ {
+ ODR_MASK_SET(resp->options, Z_Options_present);
+ strcat(options, " prst");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_delSet) &&
+ assoc->init->bend_delete)
+ {
+ ODR_MASK_SET(resp->options, Z_Options_delSet);
+ strcat(options, " del");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_extendedServices) &&
+ assoc->init->bend_esrequest)
+ {
+ ODR_MASK_SET(resp->options, Z_Options_extendedServices);
+ strcat (options, " extendedServices");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
+ {
+ ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
+ strcat(options, " namedresults");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_scan) && assoc->init->bend_scan)
+ {
+ ODR_MASK_SET(resp->options, Z_Options_scan);
+ strcat(options, " scan");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_concurrentOperations))
+ {
+ ODR_MASK_SET(resp->options, Z_Options_concurrentOperations);
+ strcat(options, " concurrop");
+ }
+ if (ODR_MASK_GET(req->options, Z_Options_sort) && assoc->init->bend_sort)
+ {
+ ODR_MASK_SET(resp->options, Z_Options_sort);
+ strcat(options, " sort");
+ }
+
+ if (ODR_MASK_GET(req->options, Z_Options_negotiationModel)
+ && assoc->init->charneg_response)
+ {
+ Z_OtherInformation **p;
+ Z_OtherInformationUnit *p0;
+
+ yaz_oi_APDU(apdu, &p);
+
+ if ((p0=yaz_oi_update(p, assoc->encode, NULL, 0, 0))) {
+ ODR_MASK_SET(resp->options, Z_Options_negotiationModel);
+
+ p0->which = Z_OtherInfo_externallyDefinedInfo;
+ p0->information.externallyDefinedInfo =
+ assoc->init->charneg_response;
+ }
+ ODR_MASK_SET(resp->options, Z_Options_negotiationModel);
+ strcat(options, " negotiation");
+ }
+
+ if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
+ {
+ ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_1);
+ assoc->version = 2; /* 1 & 2 are equivalent */
+ }
+ if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
+ {
+ ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_2);
+ assoc->version = 2;
+ }
+ if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_3))
+ {
+ ODR_MASK_SET(resp->protocolVersion, Z_ProtocolVersion_3);
+ assoc->version = 3;
}
- 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;
+ yaz_log(LOG_LOG, "Negotiated to v%d: %s", assoc->version, options);
assoc->maximumRecordSize = *req->maximumRecordSize;
- if (assoc->maximumRecordSize > ENCODE_BUFFER_SIZE - 500)
- assoc->maximumRecordSize = ENCODE_BUFFER_SIZE - 500;
+ if (assoc->maximumRecordSize > control_block->maxrecordsize)
+ assoc->maximumRecordSize = control_block->maxrecordsize;
assoc->preferredMessageSize = *req->preferredMessageSize;
if (assoc->preferredMessageSize > assoc->maximumRecordSize)
assoc->preferredMessageSize = assoc->maximumRecordSize;
- resp.preferredMessageSize = &assoc->preferredMessageSize;
- resp.maximumRecordSize = &assoc->maximumRecordSize;
- resp.result = &result;
- resp.implementationId = "YAZ";
- resp.implementationName = "YAZ/Simple asynchronous test server";
- resp.implementationVersion = "$Revision: 1.7 $";
- resp.userInformationField = 0;
- if (!z_APDU(assoc->encode, &apdup, 0))
- {
- odr_perror(assoc->encode, "Encode initres");
- return -1;
+
+#if 0
+ assoc->maximumRecordSize = 3000000;
+ assoc->preferredMessageSize = 3000000;
+#endif
+
+ resp->preferredMessageSize = &assoc->preferredMessageSize;
+ resp->maximumRecordSize = &assoc->maximumRecordSize;
+
+ resp->implementationName = "GFS/YAZ";
+
+ if (assoc->init->implementation_id)
+ {
+ char *nv = (char *)
+ odr_malloc (assoc->encode,
+ strlen(assoc->init->implementation_id) + 10 +
+ strlen(resp->implementationId));
+ sprintf (nv, "%s / %s",
+ resp->implementationId, assoc->init->implementation_id);
+ resp->implementationId = nv;
}
- odr_getbuf(assoc->encode, &assoc->encoded_len);
- odr_reset(assoc->encode);
- iochan_setflags(client, EVENT_OUTPUT | EVENT_EXCEPT);
- return 0;
+ if (assoc->init->implementation_name)
+ {
+ char *nv = (char *)
+ odr_malloc (assoc->encode,
+ strlen(assoc->init->implementation_name) + 10 +
+ strlen(resp->implementationName));
+ sprintf (nv, "%s / %s",
+ resp->implementationName, assoc->init->implementation_name);
+ resp->implementationName = nv;
+ }
+ if (assoc->init->implementation_version)
+ {
+ char *nv = (char *)
+ odr_malloc (assoc->encode,
+ strlen(assoc->init->implementation_version) + 10 +
+ strlen(resp->implementationVersion));
+ sprintf (nv, "YAZ %s / %s",
+ resp->implementationVersion,
+ assoc->init->implementation_version);
+ resp->implementationVersion = nv;
+ }
+
+ if (binitres->errcode)
+ {
+ yaz_log(LOG_LOG, "Connection rejected by backend.");
+ *resp->result = 0;
+ assoc->state = ASSOC_DEAD;
+ }
+ else
+ assoc->state = ASSOC_UP;
+ return apdu;
+}
+
+/*
+ * These functions should be merged.
+ */
+
+static void set_addinfo (Z_DefaultDiagFormat *dr, char *addinfo, ODR odr)
+{
+ dr->which = Z_DefaultDiagFormat_v2Addinfo;
+ dr->u.v2Addinfo = odr_strdup (odr, addinfo ? addinfo : "");
+}
+
+/*
+ * nonsurrogate diagnostic record.
+ */
+static Z_Records *diagrec(association *assoc, int error, char *addinfo)
+{
+ Z_Records *rec = (Z_Records *)
+ odr_malloc (assoc->encode, sizeof(*rec));
+ int *err = odr_intdup(assoc->encode, error);
+ Z_DiagRec *drec = (Z_DiagRec *)
+ odr_malloc (assoc->encode, sizeof(*drec));
+ Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
+ odr_malloc (assoc->encode, sizeof(*dr));
+
+ yaz_log(LOG_LOG, "[%d] %s %s%s", error, diagbib1_str(error),
+ addinfo ? " -- " : "", addinfo ? addinfo : "");
+ rec->which = Z_Records_NSD;
+ rec->u.nonSurrogateDiagnostic = dr;
+ dr->diagnosticSetId =
+ yaz_oidval_to_z3950oid (assoc->encode, CLASS_DIAGSET, VAL_BIB1);
+ dr->condition = err;
+ set_addinfo (dr, addinfo, assoc->encode);
+ return rec;
}
-static Z_Records *diagrec(int error, char *addinfo)
+/*
+ * surrogate diagnostic.
+ */
+static Z_NamePlusRecord *surrogatediagrec(association *assoc, char *dbname,
+ int error, char *addinfo)
{
- static Z_Records rec;
- static Odr_oid bib1[] = { 1, 2, 3, 4, 5, -1 };
- static Z_DiagRec dr;
- static int err;
+ Z_NamePlusRecord *rec = (Z_NamePlusRecord *)
+ odr_malloc (assoc->encode, sizeof(*rec));
+ int *err = odr_intdup(assoc->encode, error);
+ Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
+ Z_DefaultDiagFormat *dr = (Z_DefaultDiagFormat *)
+ odr_malloc (assoc->encode, sizeof(*dr));
+
+ yaz_log(LOG_DEBUG, "SurrogateDiagnotic: %d -- %s", error, addinfo);
+ rec->databaseName = dbname;
+ rec->which = Z_NamePlusRecord_surrogateDiagnostic;
+ rec->u.surrogateDiagnostic = drec;
+ drec->which = Z_DiagRec_defaultFormat;
+ drec->u.defaultFormat = dr;
+ dr->diagnosticSetId =
+ yaz_oidval_to_z3950oid (assoc->encode, CLASS_DIAGSET, VAL_BIB1);
+ dr->condition = err;
+ set_addinfo (dr, addinfo, assoc->encode);
- 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.condition = &err;
- dr.addinfo = addinfo ? addinfo : "";
- return &rec;
+ return rec;
}
-static Z_NamePlusRecord *surrogatediagrec(char *dbname, int error,
- char *addinfo)
+/*
+ * multiple nonsurrogate diagnostics.
+ */
+static Z_DiagRecs *diagrecs(association *assoc, 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;
+ Z_DiagRecs *recs = (Z_DiagRecs *)odr_malloc (assoc->encode, sizeof(*recs));
+ int *err = odr_intdup(assoc->encode, error);
+ Z_DiagRec **recp = (Z_DiagRec **)odr_malloc (assoc->encode, sizeof(*recp));
+ Z_DiagRec *drec = (Z_DiagRec *)odr_malloc (assoc->encode, sizeof(*drec));
+ Z_DefaultDiagFormat *rec = (Z_DefaultDiagFormat *)
+ odr_malloc (assoc->encode, sizeof(*rec));
+
+ yaz_log(LOG_DEBUG, "DiagRecs: %d -- %s", error, addinfo ? addinfo : "");
+
+ recs->num_diagRecs = 1;
+ recs->diagRecs = recp;
+ recp[0] = drec;
+ drec->which = Z_DiagRec_defaultFormat;
+ drec->u.defaultFormat = rec;
- fprintf(stderr, "SurrogateDiagnotic: %d -- %s\n", error, addinfo);
- rec.databaseName = dbname;
- rec.which = Z_NamePlusRecord_surrogateDiagnostic;
- rec.u.surrogateDiagnostic = &dr;
- dr.diagnosticSetId = bib1;
- dr.condition = &err;
- dr.addinfo = addinfo ? addinfo : "";
- return &rec;
+ rec->diagnosticSetId =
+ yaz_oidval_to_z3950oid (assoc->encode, CLASS_DIAGSET, VAL_BIB1);
+ rec->condition = err;
+
+ rec->which = Z_DefaultDiagFormat_v2Addinfo;
+ rec->u.v2Addinfo = odr_strdup (assoc->encode, addinfo ? addinfo : "");
+ return recs;
}
-static Z_Records *pack_records(association *a, int num, Z_ElementSetNames *esn)
+static Z_Records *pack_records(association *a, char *setname, int start,
+ int *num, Z_RecordComposition *comp,
+ int *next, int *pres, oid_value format,
+ Z_ReferenceId *referenceId,
+ int *oid)
{
+ int recno, total_length = 0, toget = *num, dumped_records = 0;
+ Z_Records *records =
+ (Z_Records *) odr_malloc (a->encode, sizeof(*records));
+ Z_NamePlusRecordList *reclist =
+ (Z_NamePlusRecordList *) odr_malloc (a->encode, sizeof(*reclist));
+ Z_NamePlusRecord **list =
+ (Z_NamePlusRecord **) odr_malloc (a->encode, sizeof(*list) * toget);
+
+ records->which = Z_Records_DBOSD;
+ records->u.databaseOrSurDiagnostics = reclist;
+ reclist->num_records = 0;
+ reclist->records = list;
+ *pres = Z_PRES_SUCCESS;
+ *num = 0;
+ *next = 0;
+
+ yaz_log(LOG_LOG, "Request to pack %d+%d+%s", start, toget, setname);
+ yaz_log(LOG_DEBUG, "pms=%d, mrs=%d", a->preferredMessageSize,
+ a->maximumRecordSize);
+ for (recno = start; reclist->num_records < toget; recno++)
+ {
+ bend_fetch_rr freq;
+ Z_NamePlusRecord *thisrec;
+ int this_length = 0;
+ /*
+ * we get the number of bytes allocated on the stream before any
+ * allocation done by the backend - this should give us a reasonable
+ * idea of the total size of the data so far.
+ */
+ total_length = odr_total(a->encode) - dumped_records;
+ freq.errcode = 0;
+ freq.errstring = 0;
+ freq.basename = 0;
+ freq.len = 0;
+ freq.record = 0;
+ freq.last_in_set = 0;
+ freq.setname = setname;
+ freq.surrogate_flag = 0;
+ freq.number = recno;
+ freq.comp = comp;
+ freq.request_format = format;
+ freq.request_format_raw = oid;
+ freq.output_format = format;
+ freq.output_format_raw = 0;
+ freq.stream = a->encode;
+ freq.print = a->print;
+ freq.surrogate_flag = 0;
+ freq.referenceId = referenceId;
+ (*a->init->bend_fetch)(a->backend, &freq);
+ /* backend should be able to signal whether error is system-wide
+ or only pertaining to current record */
+ if (freq.errcode)
+ {
+ if (!freq.surrogate_flag)
+ {
+ char s[20];
+ *pres = Z_PRES_FAILURE;
+ /* for 'present request out of range',
+ set addinfo to record position if not set */
+ if (freq.errcode == 13 && freq.errstring == 0)
+ {
+ sprintf (s, "%d", recno);
+ freq.errstring = s;
+ }
+ return diagrec(a, freq.errcode, freq.errstring);
+ }
+ reclist->records[reclist->num_records] =
+ surrogatediagrec(a, freq.basename, freq.errcode,
+ freq.errstring);
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ continue;
+ }
+ if (freq.len >= 0)
+ this_length = freq.len;
+ else
+ this_length = odr_total(a->encode) - total_length;
+ yaz_log(LOG_DEBUG, " fetched record, len=%d, total=%d",
+ this_length, total_length);
+ if (this_length + total_length > a->preferredMessageSize)
+ {
+ /* record is small enough, really */
+ if (this_length <= a->preferredMessageSize)
+ {
+ yaz_log(LOG_DEBUG, " Dropped last normal-sized record");
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ /* record can only be fetched by itself */
+ if (this_length < a->maximumRecordSize)
+ {
+ yaz_log(LOG_DEBUG, " Record > prefmsgsz");
+ if (toget > 1)
+ {
+ yaz_log(LOG_DEBUG, " Dropped it");
+ reclist->records[reclist->num_records] =
+ surrogatediagrec(a, freq.basename, 16, 0);
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ dumped_records += this_length;
+ continue;
+ }
+ }
+ else /* too big entirely */
+ {
+ yaz_log(LOG_LOG, "Record > maxrcdsz this=%d max=%d", this_length, a->maximumRecordSize);
+ reclist->records[reclist->num_records] =
+ surrogatediagrec(a, freq.basename, 17, 0);
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ dumped_records += this_length;
+ continue;
+ }
+ }
+
+ if (!(thisrec = (Z_NamePlusRecord *)
+ odr_malloc(a->encode, sizeof(*thisrec))))
+ return 0;
+ if (!(thisrec->databaseName = (char *)odr_malloc(a->encode,
+ strlen(freq.basename) + 1)))
+ return 0;
+ strcpy(thisrec->databaseName, freq.basename);
+ thisrec->which = Z_NamePlusRecord_databaseRecord;
+
+ if (freq.output_format_raw)
+ {
+ struct oident *ident = oid_getentbyoid(freq.output_format_raw);
+ freq.output_format = ident->value;
+ }
+ thisrec->u.databaseRecord = z_ext_record(a->encode, freq.output_format,
+ freq.record, freq.len);
+ if (!thisrec->u.databaseRecord)
+ return 0;
+ reclist->records[reclist->num_records] = thisrec;
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ }
+ *num = reclist->num_records;
+ return records;
}
-static int process_searchRequest(IOCHAN client, Z_SearchRequest *req)
+static Z_APDU *process_searchRequest(association *assoc, request *reqb,
+ int *fd)
{
- Z_APDU apdu, *apdup;
- Z_SearchResponse resp;
- association *assoc = iochan_getdata(client);
- int nulint = 0;
- bool_t sr = 1;
- int nrp;
- bend_searchrequest bsrq;
- bend_searchresult *bsrt;
+ Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
+ bend_search_rr *bsrr =
+ (bend_search_rr *)nmem_malloc (reqb->request_mem, sizeof(*bsrr));
+
+ yaz_log(LOG_LOG, "Got SearchRequest.");
+ bsrr->fd = fd;
+ bsrr->request = reqb;
+ bsrr->association = assoc;
+ bsrr->referenceId = req->referenceId;
+ save_referenceId (reqb, bsrr->referenceId);
+
+ yaz_log (LOG_LOG, "ResultSet '%s'", req->resultSetName);
+ if (req->databaseNames)
+ {
+ int i;
+ for (i = 0; i < req->num_databaseNames; i++)
+ yaz_log (LOG_LOG, "Database '%s'", req->databaseNames[i]);
+ }
+ yaz_log_zquery(req->query);
- fprintf(stderr, "Got SearchRequest.\n");
- apdup = &apdu;
- apdu.which = Z_APDU_searchResponse;
- apdu.u.searchResponse = &resp;
- resp.referenceId = req->referenceId;
+ if (assoc->init->bend_search)
+ {
+ bsrr->setname = req->resultSetName;
+ bsrr->replace_set = *req->replaceIndicator;
+ bsrr->num_bases = req->num_databaseNames;
+ bsrr->basenames = req->databaseNames;
+ bsrr->query = req->query;
+ bsrr->stream = assoc->encode;
+ bsrr->decode = assoc->decode;
+ bsrr->print = assoc->print;
+ bsrr->errcode = 0;
+ bsrr->hits = 0;
+ bsrr->errstring = NULL;
+ bsrr->search_info = NULL;
+ (assoc->init->bend_search)(assoc->backend, bsrr);
+ if (!bsrr->request)
+ return 0;
+ }
+ return response_searchRequest(assoc, reqb, bsrr, fd);
+}
+
+int bend_searchresponse(void *handle, bend_search_rr *bsrr) {return 0;}
- bsrq.setname = req->resultSetName;
- bsrq.replace_set = *req->replaceIndicator;
- bsrq.num_bases = req->num_databaseNames;
- bsrq.basenames = req->databaseNames;
- bsrq.query = req->query;
+/*
+ * Prepare a searchresponse based on the backend results. We probably want
+ * to look at making the fetching of records nonblocking as well, but
+ * so far, we'll keep things simple.
+ * If bsrt is null, that means we're called in response to a communications
+ * event, and we'll have to get the response for ourselves.
+ */
+static Z_APDU *response_searchRequest(association *assoc, request *reqb,
+ bend_search_rr *bsrt, int *fd)
+{
+ Z_SearchRequest *req = reqb->apdu_request->u.searchRequest;
+ Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+ Z_SearchResponse *resp = (Z_SearchResponse *)
+ odr_malloc (assoc->encode, sizeof(*resp));
+ int *nulint = odr_intdup (assoc->encode, 0);
+ bool_t *sr = odr_intdup(assoc->encode, 1);
+ int *next = odr_intdup(assoc->encode, 0);
+ int *none = odr_intdup(assoc->encode, Z_RES_NONE);
- if (!(bsrt = bend_search(&bsrq)))
- return -1;
+ apdu->which = Z_APDU_searchResponse;
+ apdu->u.searchResponse = resp;
+ resp->referenceId = req->referenceId;
+ resp->additionalSearchInfo = 0;
+ resp->otherInfo = 0;
+ *fd = -1;
+ if (!bsrt && !bend_searchresponse(assoc->backend, bsrt))
+ {
+ yaz_log(LOG_FATAL, "Bad result from backend");
+ return 0;
+ }
else if (bsrt->errcode)
- resp.records = diagrec(bsrt->errcode, bsrt->errstring);
+ {
+ resp->records = diagrec(assoc, 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;
+ {
+ int *toget = odr_intdup(assoc->encode, 0);
+ int *presst = odr_intdup(assoc->encode, 0);
+ Z_RecordComposition comp, *compp = 0;
+
+ yaz_log (LOG_LOG, "resultCount: %d", bsrt->hits);
- 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->records = 0;
+ resp->resultCount = &bsrt->hits;
- if (!z_APDU(assoc->encode, &apdup, 0))
+ comp.which = Z_RecordComp_simple;
+ /* how many records does the user agent want, then? */
+ if (bsrt->hits <= *req->smallSetUpperBound)
+ {
+ *toget = bsrt->hits;
+ if ((comp.u.simple = req->smallSetElementSetNames))
+ compp = ∁
+ }
+ else if (bsrt->hits < *req->largeSetLowerBound)
+ {
+ *toget = *req->mediumSetPresentNumber;
+ if (*toget > bsrt->hits)
+ *toget = bsrt->hits;
+ if ((comp.u.simple = req->mediumSetElementSetNames))
+ compp = ∁
+ }
+ else
+ *toget = 0;
+
+ if (*toget && !resp->records)
+ {
+ oident *prefformat;
+ oid_value form;
+
+ if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)))
+ form = VAL_NONE;
+ else
+ form = prefformat->value;
+ resp->records = pack_records(assoc, req->resultSetName, 1,
+ toget, compp, next, presst, form, req->referenceId,
+ req->preferredRecordSyntax);
+ if (!resp->records)
+ return 0;
+ resp->numberOfRecordsReturned = toget;
+ resp->nextResultSetPosition = next;
+ resp->searchStatus = sr;
+ resp->resultSetStatus = 0;
+ resp->presentStatus = presst;
+ }
+ else
+ {
+ if (*resp->resultCount)
+ *next = 1;
+ resp->numberOfRecordsReturned = nulint;
+ resp->nextResultSetPosition = next;
+ resp->searchStatus = sr;
+ resp->resultSetStatus = 0;
+ resp->presentStatus = 0;
+ }
+ }
+ resp->additionalSearchInfo = bsrt->search_info;
+ return apdu;
+}
+
+/*
+ * Maybe we got a little over-friendly when we designed bend_fetch to
+ * get only one record at a time. Some backends can optimise multiple-record
+ * fetches, and at any rate, there is some overhead involved in
+ * all that selecting and hopping around. Problem is, of course, that the
+ * frontend can't know ahead of time how many records it'll need to
+ * fill the negotiated PDU size. Annoying. Segmentation or not, Z/SR
+ * is downright lousy as a bulk data transfer protocol.
+ *
+ * To start with, we'll do the fetching of records from the backend
+ * in one operation: To save some trips in and out of the event-handler,
+ * and to simplify the interface to pack_records. At any rate, asynch
+ * operation is more fun in operations that have an unpredictable execution
+ * speed - which is normally more true for search than for present.
+ */
+static Z_APDU *process_presentRequest(association *assoc, request *reqb,
+ int *fd)
+{
+ Z_PresentRequest *req = reqb->apdu_request->u.presentRequest;
+ oident *prefformat;
+ oid_value form;
+ Z_APDU *apdu;
+ Z_PresentResponse *resp;
+ int *next;
+ int *num;
+
+ yaz_log(LOG_LOG, "Got PresentRequest.");
+
+ if (!(prefformat = oid_getentbyoid(req->preferredRecordSyntax)))
+ form = VAL_NONE;
+ else
+ form = prefformat->value;
+ resp = (Z_PresentResponse *)odr_malloc (assoc->encode, sizeof(*resp));
+ resp->records = 0;
+ resp->presentStatus = odr_intdup(assoc->encode, 0);
+ if (assoc->init->bend_present)
{
- odr_perror(assoc->encode, "Encode searchres");
- return -1;
+ bend_present_rr *bprr = (bend_present_rr *)
+ nmem_malloc (reqb->request_mem, sizeof(*bprr));
+ bprr->setname = req->resultSetId;
+ bprr->start = *req->resultSetStartPoint;
+ bprr->number = *req->numberOfRecordsRequested;
+ bprr->format = form;
+ bprr->comp = req->recordComposition;
+ bprr->referenceId = req->referenceId;
+ bprr->stream = assoc->encode;
+ bprr->print = assoc->print;
+ bprr->request = reqb;
+ bprr->association = assoc;
+ bprr->errcode = 0;
+ bprr->errstring = NULL;
+ (*assoc->init->bend_present)(assoc->backend, bprr);
+
+ if (!bprr->request)
+ return 0;
+ if (bprr->errcode)
+ {
+ resp->records = diagrec(assoc, bprr->errcode, bprr->errstring);
+ *resp->presentStatus = Z_PRES_FAILURE;
+ }
}
- odr_getbuf(assoc->encode, &assoc->encoded_len);
- odr_reset(assoc->encode);
- iochan_setflags(client, EVENT_OUTPUT | EVENT_EXCEPT);
- return 0;
+ apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+ next = odr_intdup(assoc->encode, 0);
+ num = odr_intdup(assoc->encode, 0);
+
+ apdu->which = Z_APDU_presentResponse;
+ apdu->u.presentResponse = resp;
+ resp->referenceId = req->referenceId;
+ resp->otherInfo = 0;
+
+ if (!resp->records)
+ {
+ *num = *req->numberOfRecordsRequested;
+ resp->records =
+ pack_records(assoc, req->resultSetId, *req->resultSetStartPoint,
+ num, req->recordComposition, next, resp->presentStatus,
+ form, req->referenceId, req->preferredRecordSyntax);
+ }
+ if (!resp->records)
+ return 0;
+ resp->numberOfRecordsReturned = num;
+ resp->nextResultSetPosition = next;
+
+ return apdu;
}
-static int process_presentRequest(IOCHAN client, Z_PresentRequest *req)
+/*
+ * Scan was implemented rather in a hurry, and with support for only the basic
+ * elements of the service in the backend API. Suggestions are welcome.
+ */
+static Z_APDU *process_scanRequest(association *assoc, request *reqb, int *fd)
{
- Z_APDU apdu, *apdup;
- Z_PresentResponse resp;
- association *assoc = iochan_getdata(client);
- int nrr = 1;
+ Z_ScanRequest *req = reqb->apdu_request->u.scanRequest;
+ Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+ Z_ScanResponse *res = (Z_ScanResponse *)
+ odr_malloc (assoc->encode, sizeof(*res));
+ int *scanStatus = odr_intdup(assoc->encode, Z_Scan_failure);
+ int *numberOfEntriesReturned = odr_intdup(assoc->encode, 0);
+ Z_ListEntries *ents = (Z_ListEntries *)
+ odr_malloc (assoc->encode, sizeof(*ents));
+ Z_DiagRecs *diagrecs_p = NULL;
+ oident *attset;
+ bend_scan_rr *bsrr = (bend_scan_rr *)
+ odr_malloc (assoc->encode, sizeof(*bsrr));
+
+ yaz_log(LOG_LOG, "Got ScanRequest");
- fprintf(stderr, "Got PresentRequest.\n");
- apdup = &apdu;
- apdu.which = Z_APDU_presentResponse;
- apdu.u.presentResponse = &resp;
- resp.referenceId = req->referenceId;
+ apdu->which = Z_APDU_scanResponse;
+ apdu->u.scanResponse = res;
+ res->referenceId = req->referenceId;
- resp.numberOfRecordsReturned = &nrr;
- resp.nextResultSetPosition = &nrr;
- resp.presentStatus = &nrr;
+ /* if step is absent, set it to 0 */
+ res->stepSize = odr_intdup(assoc->encode, 0);
+ if (req->stepSize)
+ *res->stepSize = *req->stepSize;
- resp.records = diagrec(1, "No records yet.");
+ res->scanStatus = scanStatus;
+ res->numberOfEntriesReturned = numberOfEntriesReturned;
+ res->positionOfTerm = 0;
+ res->entries = ents;
+ ents->num_entries = 0;
+ ents->entries = NULL;
+ ents->num_nonsurrogateDiagnostics = 0;
+ ents->nonsurrogateDiagnostics = NULL;
+ res->attributeSet = 0;
+ res->otherInfo = 0;
- if (!z_APDU(assoc->encode, &apdup, 0))
+ if (req->databaseNames)
{
- odr_perror(assoc->encode, "Encode presentres");
- return -1;
+ int i;
+ for (i = 0; i < req->num_databaseNames; i++)
+ yaz_log (LOG_LOG, "Database '%s'", req->databaseNames[i]);
}
- odr_getbuf(assoc->encode, &assoc->encoded_len);
- odr_reset(assoc->encode);
- iochan_setflags(client, EVENT_OUTPUT | EVENT_EXCEPT);
+ bsrr->num_bases = req->num_databaseNames;
+ bsrr->basenames = req->databaseNames;
+ bsrr->num_entries = *req->numberOfTermsRequested;
+ bsrr->term = req->termListAndStartPoint;
+ bsrr->referenceId = req->referenceId;
+ bsrr->stream = assoc->encode;
+ bsrr->print = assoc->print;
+ bsrr->step_size = res->stepSize;
+ if (req->attributeSet &&
+ (attset = oid_getentbyoid(req->attributeSet)) &&
+ (attset->oclass == CLASS_ATTSET || attset->oclass == CLASS_GENERAL))
+ bsrr->attributeset = attset->value;
+ else
+ bsrr->attributeset = VAL_NONE;
+ log_scan_term (req->termListAndStartPoint, bsrr->attributeset);
+ bsrr->term_position = req->preferredPositionInResponse ?
+ *req->preferredPositionInResponse : 1;
+ ((int (*)(void *, bend_scan_rr *))
+ (*assoc->init->bend_scan))(assoc->backend, bsrr);
+ if (bsrr->errcode)
+ diagrecs_p = diagrecs(assoc, bsrr->errcode, bsrr->errstring);
+ else
+ {
+ int i;
+ Z_Entry **tab = (Z_Entry **)
+ odr_malloc (assoc->encode, sizeof(*tab) * bsrr->num_entries);
+
+ if (bsrr->status == BEND_SCAN_PARTIAL)
+ *scanStatus = Z_Scan_partial_5;
+ else
+ *scanStatus = Z_Scan_success;
+ ents->entries = tab;
+ ents->num_entries = bsrr->num_entries;
+ res->numberOfEntriesReturned = &ents->num_entries;
+ res->positionOfTerm = &bsrr->term_position;
+ for (i = 0; i < bsrr->num_entries; i++)
+ {
+ Z_Entry *e;
+ Z_TermInfo *t;
+ Odr_oct *o;
+
+ tab[i] = e = (Z_Entry *)odr_malloc(assoc->encode, sizeof(*e));
+ if (bsrr->entries[i].occurrences >= 0)
+ {
+ e->which = Z_Entry_termInfo;
+ e->u.termInfo = t = (Z_TermInfo *)
+ odr_malloc(assoc->encode, sizeof(*t));
+ t->suggestedAttributes = 0;
+ t->displayTerm = 0;
+ t->alternativeTerm = 0;
+ t->byAttributes = 0;
+ t->otherTermInfo = 0;
+ t->globalOccurrences = &bsrr->entries[i].occurrences;
+ t->term = (Z_Term *)
+ odr_malloc(assoc->encode, sizeof(*t->term));
+ t->term->which = Z_Term_general;
+ t->term->u.general = o =
+ (Odr_oct *)odr_malloc(assoc->encode, sizeof(Odr_oct));
+ o->buf = (unsigned char *)
+ odr_malloc(assoc->encode, o->len = o->size =
+ strlen(bsrr->entries[i].term));
+ memcpy(o->buf, bsrr->entries[i].term, o->len);
+ yaz_log(LOG_DEBUG, " term #%d: '%s' (%d)", i,
+ bsrr->entries[i].term, bsrr->entries[i].occurrences);
+ }
+ else
+ {
+ Z_DiagRecs *drecs = diagrecs (assoc,
+ bsrr->entries[i].errcode,
+ bsrr->entries[i].errstring);
+ assert (drecs->num_diagRecs == 1);
+ e->which = Z_Entry_surrogateDiagnostic;
+ assert (drecs->diagRecs[0]);
+ e->u.surrogateDiagnostic = drecs->diagRecs[0];
+ }
+ }
+ }
+ if (diagrecs_p)
+ {
+ ents->num_nonsurrogateDiagnostics = diagrecs_p->num_diagRecs;
+ ents->nonsurrogateDiagnostics = diagrecs_p->diagRecs;
+ }
+ return apdu;
+}
+
+static Z_APDU *process_sortRequest(association *assoc, request *reqb,
+ int *fd)
+{
+ Z_SortRequest *req = reqb->apdu_request->u.sortRequest;
+ Z_SortResponse *res = (Z_SortResponse *)
+ odr_malloc (assoc->encode, sizeof(*res));
+ bend_sort_rr *bsrr = (bend_sort_rr *)
+ odr_malloc (assoc->encode, sizeof(*bsrr));
+
+ Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+
+ yaz_log(LOG_LOG, "Got SortRequest.");
+
+ bsrr->num_input_setnames = req->num_inputResultSetNames;
+ bsrr->input_setnames = req->inputResultSetNames;
+ bsrr->referenceId = req->referenceId;
+ bsrr->output_setname = req->sortedResultSetName;
+ bsrr->sort_sequence = req->sortSequence;
+ bsrr->stream = assoc->encode;
+ bsrr->print = assoc->print;
+
+ bsrr->sort_status = Z_SortStatus_failure;
+ bsrr->errcode = 0;
+ bsrr->errstring = 0;
+
+ (*assoc->init->bend_sort)(assoc->backend, bsrr);
+
+ res->referenceId = bsrr->referenceId;
+ res->sortStatus = odr_intdup(assoc->encode, bsrr->sort_status);
+ res->resultSetStatus = 0;
+ if (bsrr->errcode)
+ {
+ Z_DiagRecs *dr = diagrecs (assoc, bsrr->errcode, bsrr->errstring);
+ res->diagnostics = dr->diagRecs;
+ res->num_diagnostics = dr->num_diagRecs;
+ }
+ else
+ {
+ res->num_diagnostics = 0;
+ res->diagnostics = 0;
+ }
+ res->otherInfo = 0;
+
+ apdu->which = Z_APDU_sortResponse;
+ apdu->u.sortResponse = res;
+ return apdu;
+}
+
+static Z_APDU *process_deleteRequest(association *assoc, request *reqb,
+ int *fd)
+{
+ Z_DeleteResultSetRequest *req =
+ reqb->apdu_request->u.deleteResultSetRequest;
+ Z_DeleteResultSetResponse *res = (Z_DeleteResultSetResponse *)
+ odr_malloc (assoc->encode, sizeof(*res));
+ bend_delete_rr *bdrr = (bend_delete_rr *)
+ odr_malloc (assoc->encode, sizeof(*bdrr));
+ Z_APDU *apdu = (Z_APDU *)odr_malloc (assoc->encode, sizeof(*apdu));
+
+ yaz_log(LOG_LOG, "Got DeleteRequest.");
+
+ bdrr->num_setnames = req->num_resultSetList;
+ bdrr->setnames = req->resultSetList;
+ bdrr->stream = assoc->encode;
+ bdrr->print = assoc->print;
+ bdrr->function = *req->deleteFunction;
+ bdrr->referenceId = req->referenceId;
+ bdrr->statuses = 0;
+ if (bdrr->num_setnames > 0)
+ {
+ int i;
+ bdrr->statuses = (int*)
+ odr_malloc(assoc->encode, sizeof(*bdrr->statuses) *
+ bdrr->num_setnames);
+ for (i = 0; i < bdrr->num_setnames; i++)
+ bdrr->statuses[i] = 0;
+ }
+ (*assoc->init->bend_delete)(assoc->backend, bdrr);
+
+ res->referenceId = req->referenceId;
+
+ res->deleteOperationStatus = odr_intdup(assoc->encode,bdrr->delete_status);
+
+ res->deleteListStatuses = 0;
+ if (bdrr->num_setnames > 0)
+ {
+ int i;
+ res->deleteListStatuses = (Z_ListStatuses *)
+ odr_malloc(assoc->encode, sizeof(*res->deleteListStatuses));
+ res->deleteListStatuses->num = bdrr->num_setnames;
+ res->deleteListStatuses->elements =
+ (Z_ListStatus **)
+ odr_malloc (assoc->encode,
+ sizeof(*res->deleteListStatuses->elements) *
+ bdrr->num_setnames);
+ for (i = 0; i<bdrr->num_setnames; i++)
+ {
+ res->deleteListStatuses->elements[i] =
+ (Z_ListStatus *)
+ odr_malloc (assoc->encode,
+ sizeof(**res->deleteListStatuses->elements));
+ res->deleteListStatuses->elements[i]->status = bdrr->statuses+i;
+ res->deleteListStatuses->elements[i]->id =
+ odr_strdup (assoc->encode, bdrr->setnames[i]);
+
+ }
+ }
+ res->numberNotDeleted = 0;
+ res->bulkStatuses = 0;
+ res->deleteMessage = 0;
+ res->otherInfo = 0;
+
+ apdu->which = Z_APDU_deleteResultSetResponse;
+ apdu->u.deleteResultSetResponse = res;
+ return apdu;
+}
+
+static void process_close(association *assoc, request *reqb)
+{
+ Z_Close *req = reqb->apdu_request->u.close;
+ static char *reasons[] =
+ {
+ "finished",
+ "shutdown",
+ "systemProblem",
+ "costLimit",
+ "resources",
+ "securityViolation",
+ "protocolError",
+ "lackOfActivity",
+ "peerAbort",
+ "unspecified"
+ };
+
+ yaz_log(LOG_LOG, "Got Close, reason %s, message %s",
+ reasons[*req->closeReason], req->diagnosticInformation ?
+ req->diagnosticInformation : "NULL");
+ if (assoc->version < 3) /* to make do_force respond with close */
+ assoc->version = 3;
+ do_close_req(assoc, Z_Close_finished,
+ "Association terminated by client", reqb);
+}
+
+void save_referenceId (request *reqb, Z_ReferenceId *refid)
+{
+ if (refid)
+ {
+ reqb->len_refid = refid->len;
+ reqb->refid = (char *)nmem_malloc (reqb->request_mem, refid->len);
+ memcpy (reqb->refid, refid->buf, refid->len);
+ }
+ else
+ {
+ reqb->len_refid = 0;
+ reqb->refid = NULL;
+ }
+}
+
+void bend_request_send (bend_association a, bend_request req, Z_APDU *res)
+{
+ process_z_response (a, req, res);
+}
+
+bend_request bend_request_mk (bend_association a)
+{
+ request *nreq = request_get (&a->outgoing);
+ nreq->request_mem = nmem_create ();
+ return nreq;
+}
+
+Z_ReferenceId *bend_request_getid (ODR odr, bend_request req)
+{
+ Z_ReferenceId *id;
+ if (!req->refid)
+ return 0;
+ id = (Odr_oct *)odr_malloc (odr, sizeof(*odr));
+ id->buf = (unsigned char *)odr_malloc (odr, req->len_refid);
+ id->len = id->size = req->len_refid;
+ memcpy (id->buf, req->refid, req->len_refid);
+ return id;
+}
+
+void bend_request_destroy (bend_request *req)
+{
+ nmem_destroy((*req)->request_mem);
+ request_release(*req);
+ *req = NULL;
+}
+
+int bend_backend_respond (bend_association a, bend_request req)
+{
+ char *msg;
+ int r;
+ r = process_z_request (a, req, &msg);
+ if (r < 0)
+ yaz_log (LOG_WARN, "%s", msg);
+ return r;
+}
+
+void bend_request_setdata(bend_request r, void *p)
+{
+ r->clientData = p;
+}
+
+void *bend_request_getdata(bend_request r)
+{
+ return r->clientData;
+}
+
+static Z_APDU *process_segmentRequest (association *assoc, request *reqb)
+{
+ bend_segment_rr req;
+
+ req.segment = reqb->apdu_request->u.segmentRequest;
+ req.stream = assoc->encode;
+ req.decode = assoc->decode;
+ req.print = assoc->print;
+ req.association = assoc;
+
+ (*assoc->init->bend_segment)(assoc->backend, &req);
+
return 0;
}
+
+static Z_APDU *process_ESRequest(association *assoc, request *reqb, int *fd)
+{
+ bend_esrequest_rr esrequest;
+
+ Z_ExtendedServicesRequest *req =
+ reqb->apdu_request->u.extendedServicesRequest;
+ Z_APDU *apdu = zget_APDU(assoc->encode, Z_APDU_extendedServicesResponse);
+
+ Z_ExtendedServicesResponse *resp = apdu->u.extendedServicesResponse;
+
+ yaz_log(LOG_DEBUG,"inside Process esRequest");
+
+ esrequest.esr = reqb->apdu_request->u.extendedServicesRequest;
+ esrequest.stream = assoc->encode;
+ esrequest.decode = assoc->decode;
+ esrequest.print = assoc->print;
+ esrequest.errcode = 0;
+ esrequest.errstring = NULL;
+ esrequest.request = reqb;
+ esrequest.association = assoc;
+ esrequest.taskPackage = 0;
+ esrequest.referenceId = req->referenceId;
+
+ (*assoc->init->bend_esrequest)(assoc->backend, &esrequest);
+
+ /* If the response is being delayed, return NULL */
+ if (esrequest.request == NULL)
+ return(NULL);
+
+ resp->referenceId = req->referenceId;
+
+ if (esrequest.errcode == -1)
+ {
+ /* Backend service indicates request will be processed */
+ yaz_log(LOG_DEBUG,"Request could be processed...Accepted !");
+ *resp->operationStatus = Z_ExtendedServicesResponse_accepted;
+ }
+ else if (esrequest.errcode == 0)
+ {
+ /* Backend service indicates request will be processed */
+ yaz_log(LOG_DEBUG,"Request could be processed...Done !");
+ *resp->operationStatus = Z_ExtendedServicesResponse_done;
+ }
+ else
+ {
+ Z_DiagRecs *diagRecs = diagrecs (assoc, esrequest.errcode,
+ esrequest.errstring);
+
+ /* Backend indicates error, request will not be processed */
+ yaz_log(LOG_DEBUG,"Request could not be processed...failure !");
+ *resp->operationStatus = Z_ExtendedServicesResponse_failure;
+ resp->num_diagnostics = diagRecs->num_diagRecs;
+ resp->diagnostics = diagRecs->diagRecs;
+ }
+ /* Do something with the members of bend_extendedservice */
+ if (esrequest.taskPackage)
+ resp->taskPackage = z_ext_record (assoc->encode, VAL_EXTENDED,
+ (const char *) esrequest.taskPackage,
+ -1);
+ yaz_log(LOG_DEBUG,"Send the result apdu");
+ return apdu;
+}
+
projects / yaz-moved-to-github.git / blobdiff