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