/*
- * Copyright (C) 1994, Index Data I/S
- * All rights reserved.
+ * Copyright (C) 1995-2002, Index Data
+ * See the file LICENSE for details.
* Sebastian Hammer, Adam Dickmeiss
*
- * $Log: session.h,v $
- * Revision 1.1 1995-03-14 10:28:02 quinn
- * More work on demo server.
- *
- *
+ * $Id: session.h,v 1.26 2002-11-26 13:15:42 adam Exp $
*/
#ifndef SESSION_H
#define SESSION_H
-#include <comstack.h>
-#include <odr.h>
+#include <sys/types.h>
+#include <yaz/comstack.h>
+#include <yaz/odr.h>
+#include <yaz/oid.h>
+#include <yaz/proto.h>
+#include "eventl.h"
+
+typedef enum {
+ REQUEST_IDLE, /* the request is just sitting in the queue */
+ REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
+ /* this list will have more elements when acc/res control is added */
+} request_state;
+
+typedef struct request
+{
+ int len_refid; /* length of referenceid */
+ char *refid; /* referenceid */
+ request_state state;
+
+ Z_APDU *apdu_request; /* Current request */
+ NMEM request_mem; /* memory handle for request */
+
+ int size_response; /* size of buffer */
+ int len_response; /* length of encoded data */
+ char *response; /* encoded data waiting for transmission */
+
+ void *clientData;
+ struct request *next;
+ struct request_q *q;
+} request;
+
+typedef struct request_q
+{
+ request *head;
+ request *tail;
+ request *list;
+ int num;
+} request_q;
+
+/*
+ * association state.
+ */
+typedef enum
+{
+ ASSOC_NEW, /* not initialized yet */
+ ASSOC_UP, /* normal operation */
+ ASSOC_DEAD /* dead. Close if input arrives */
+} association_state;
typedef struct association
{
- /* comms-related handles */
- IOCHAN client_chan;
- COMSTACK client_link;
- ODR decode;
- ODR encode;
- char *encode_buffer;
- int encoded_len;
- char *input_buffer;
- int input_buffer_len;
- int input_apdu_len;
- int state;
-#define ASSOC_UNINIT 0
-#define ASSOC_IDLE 1
+ IOCHAN client_chan; /* event-loop control */
+ COMSTACK client_link; /* communication handle */
+ ODR decode; /* decoding stream */
+ ODR encode; /* encoding stream */
+ ODR print; /* printing stream (for -a) */
+ char *encode_buffer; /* temporary buffer for encoded data */
+ int encoded_len; /* length of encoded data */
+ char *input_buffer; /* input buffer (allocated by comstack) */
+ int input_buffer_len; /* length (size) of buffer */
+ int input_apdu_len; /* length of current incoming APDU */
+ oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
+ void *backend; /* backend handle */
+ request_q incoming; /* Q of incoming PDUs */
+ request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
+ association_state state;
/* session parameters */
int preferredMessageSize;
int maximumRecordSize;
+ int version; /* highest version-bit set (2 or 3) */
+
+ unsigned cs_get_mask;
+ unsigned cs_put_mask;
+ unsigned cs_accept_mask;
+
+ struct bend_initrequest *init;
+#if 0
+ int (*bend_sort) ();
+ int (*bend_search) ();
+ int (*bend_present) ();
+ int (*bend_esrequest) ();
+ int (*bend_delete) ();
+ int (*bend_scan) ();
+ int (*bend_segment) ();
+#endif
} association;
association *create_association(IOCHAN channel, COMSTACK link);
+void destroy_association(association *h);
void ir_session(IOCHAN h, int event);
+void request_enq(request_q *q, request *r);
+request *request_head(request_q *q);
+request *request_deq(request_q *q);
+request *request_deq_x(request_q *q, request *r);
+void request_initq(request_q *q);
+void request_delq(request_q *q);
+request *request_get(request_q *q);
+void request_release(request *r);
+
+int statserv_must_terminate(void);
+
#endif