2 * Copyright (C) 1995-1998, Index Data I/S
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.16 1998-03-31 11:07:45 adam
8 * Furhter work on UNIverse resource report.
9 * Added Extended Services handling in frontend server.
11 * Revision 1.15 1998/02/11 11:53:36 adam
12 * Changed code so that it compiles as C++.
14 * Revision 1.14 1998/02/10 11:03:57 adam
15 * Added support for extended handlers in backend server interface.
17 * Revision 1.13 1998/01/29 13:30:23 adam
18 * Better event handle system for NT/Unix.
20 * Revision 1.12 1997/09/01 08:53:01 adam
21 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
22 * moved a separate directory. MSV5.0 project server.dsp created.
23 * As an option, the server can now operate as an NT service.
25 * Revision 1.11 1995/11/08 17:41:40 quinn
28 * Revision 1.10 1995/08/29 11:18:01 quinn
29 * Added code to receive close
31 * Revision 1.9 1995/06/16 10:31:38 quinn
32 * Added session timeout.
34 * Revision 1.8 1995/05/17 08:42:28 quinn
35 * Transfer auth info to backend. Allow backend to reject init gracefully.
37 * Revision 1.7 1995/05/16 08:51:08 quinn
38 * License, documentation, and memory fixes
40 * Revision 1.6 1995/05/15 11:56:41 quinn
41 * Asynchronous facilities. Restructuring of seshigh code.
43 * Revision 1.5 1995/04/20 15:13:01 quinn
46 * Revision 1.4 1995/04/10 10:23:39 quinn
47 * Some work to add scan and other things.
49 * Revision 1.3 1995/03/30 09:09:27 quinn
50 * Added state-handle and some support for asynchronous activities.
52 * Revision 1.2 1995/03/27 08:34:29 quinn
53 * Added dynamic server functionality.
54 * Released bindings to session.c (is now redundant)
56 * Revision 1.1 1995/03/14 10:28:02 quinn
57 * More work on demo server.
69 #include <sys/types.h>
73 REQUEST_IDLE, /* the request is just sitting in the queue */
74 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
75 /* this list will have more elements when acc/res control is added */
78 typedef struct request
80 int len_refid; /* length of referenceid */
81 char *refid; /* referenceid */
84 Z_APDU *request; /* Current request */
85 NMEM request_mem; /* memory handle for request */
87 int size_response; /* size of buffer */
88 int len_response; /* length of encoded data */
89 char *response; /* encoded data waiting for transmission */
96 typedef struct request_q
109 ASSOC_NEW, /* not initialized yet */
110 ASSOC_UP, /* normal operation */
111 ASSOC_DEAD /* dead. Close if input arrives */
114 typedef struct association
116 IOCHAN client_chan; /* event-loop control */
117 COMSTACK client_link; /* communication handle */
118 ODR decode; /* decoding stream */
119 ODR encode; /* encoding stream */
120 ODR print; /* printing stream (for -a) */
121 char *encode_buffer; /* temporary buffer for encoded data */
122 int encoded_len; /* length of encoded data */
123 char *input_buffer; /* input buffer (allocated by comstack) */
124 int input_buffer_len; /* length (size) of buffer */
125 int input_apdu_len; /* length of current incoming APDU */
126 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
127 void *backend; /* backend handle */
128 request_q incoming; /* Q of incoming PDUs */
129 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
130 association_state state;
132 /* session parameters */
133 int preferredMessageSize;
134 int maximumRecordSize;
135 int version; /* highest version-bit set (2 or 3) */
138 int (*bend_search) ();
139 int (*bend_present) ();
140 int (*bend_esrequest) ();
143 association *create_association(IOCHAN channel, COMSTACK link);
144 void destroy_association(association *h);
145 void ir_session(IOCHAN h, int event);
147 void request_enq(request_q *q, request *r);
148 request *request_head(request_q *q);
149 request *request_deq(request_q *q);
150 request *request_deq_x(request_q *q, request *r);
151 void request_initq(request_q *q);
152 void request_delq(request_q *q);
153 request *request_get(request_q *q);
154 void request_release(request *r);