2 * Copyright (C) 1995-1998, Index Data I/S
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.15 1998-02-11 11:53:36 adam
8 * Changed code so that it compiles as C++.
10 * Revision 1.14 1998/02/10 11:03:57 adam
11 * Added support for extended handlers in backend server interface.
13 * Revision 1.13 1998/01/29 13:30:23 adam
14 * Better event handle system for NT/Unix.
16 * Revision 1.12 1997/09/01 08:53:01 adam
17 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
18 * moved a separate directory. MSV5.0 project server.dsp created.
19 * As an option, the server can now operate as an NT service.
21 * Revision 1.11 1995/11/08 17:41:40 quinn
24 * Revision 1.10 1995/08/29 11:18:01 quinn
25 * Added code to receive close
27 * Revision 1.9 1995/06/16 10:31:38 quinn
28 * Added session timeout.
30 * Revision 1.8 1995/05/17 08:42:28 quinn
31 * Transfer auth info to backend. Allow backend to reject init gracefully.
33 * Revision 1.7 1995/05/16 08:51:08 quinn
34 * License, documentation, and memory fixes
36 * Revision 1.6 1995/05/15 11:56:41 quinn
37 * Asynchronous facilities. Restructuring of seshigh code.
39 * Revision 1.5 1995/04/20 15:13:01 quinn
42 * Revision 1.4 1995/04/10 10:23:39 quinn
43 * Some work to add scan and other things.
45 * Revision 1.3 1995/03/30 09:09:27 quinn
46 * Added state-handle and some support for asynchronous activities.
48 * Revision 1.2 1995/03/27 08:34:29 quinn
49 * Added dynamic server functionality.
50 * Released bindings to session.c (is now redundant)
52 * Revision 1.1 1995/03/14 10:28:02 quinn
53 * More work on demo server.
65 #include <sys/types.h>
69 REQUEST_IDLE, /* the request is just sitting in the queue */
70 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
71 /* this list will have more elements when acc/res control is added */
74 typedef struct request
76 int len_refid; /* length of referenceid */
77 char *refid; /* referenceid */
80 Z_APDU *request; /* Current request */
81 NMEM request_mem; /* memory handle for request */
83 int size_response; /* size of buffer */
84 int len_response; /* length of encoded data */
85 char *response; /* encoded data waiting for transmission */
92 typedef struct request_q
105 ASSOC_NEW, /* not initialized yet */
106 ASSOC_UP, /* normal operation */
107 ASSOC_DEAD /* dead. Close if input arrives */
110 typedef struct association
112 IOCHAN client_chan; /* event-loop control */
113 COMSTACK client_link; /* communication handle */
114 ODR decode; /* decoding stream */
115 ODR encode; /* encoding stream */
116 ODR print; /* printing stream (for -a) */
117 char *encode_buffer; /* temporary buffer for encoded data */
118 int encoded_len; /* length of encoded data */
119 char *input_buffer; /* input buffer (allocated by comstack) */
120 int input_buffer_len; /* length (size) of buffer */
121 int input_apdu_len; /* length of current incoming APDU */
122 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
123 void *backend; /* backend handle */
124 request_q incoming; /* Q of incoming PDUs */
125 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
126 association_state state;
128 /* session parameters */
129 int preferredMessageSize;
130 int maximumRecordSize;
131 int version; /* highest version-bit set (2 or 3) */
134 int (*bend_search) ();
135 int (*bend_present) ();
138 association *create_association(IOCHAN channel, COMSTACK link);
139 void destroy_association(association *h);
140 void ir_session(IOCHAN h, int event);
142 void request_enq(request_q *q, request *r);
143 request *request_head(request_q *q);
144 request *request_deq(request_q *q);
145 request *request_deq_x(request_q *q, request *r);
146 void request_initq(request_q *q);
147 void request_delq(request_q *q);
148 request *request_get(request_q *q);
149 void request_release(request *r);