2 * Copyright (C) 1995-1998, Index Data I/S
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.18 1998-08-03 10:23:57 adam
8 * Fixed bug regarding Options for Sort.
10 * Revision 1.17 1998/07/20 12:38:43 adam
11 * Implemented delete result set service to server API.
13 * Revision 1.16 1998/03/31 11:07:45 adam
14 * Furhter work on UNIverse resource report.
15 * Added Extended Services handling in frontend server.
17 * Revision 1.15 1998/02/11 11:53:36 adam
18 * Changed code so that it compiles as C++.
20 * Revision 1.14 1998/02/10 11:03:57 adam
21 * Added support for extended handlers in backend server interface.
23 * Revision 1.13 1998/01/29 13:30:23 adam
24 * Better event handle system for NT/Unix.
26 * Revision 1.12 1997/09/01 08:53:01 adam
27 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
28 * moved a separate directory. MSV5.0 project server.dsp created.
29 * As an option, the server can now operate as an NT service.
31 * Revision 1.11 1995/11/08 17:41:40 quinn
34 * Revision 1.10 1995/08/29 11:18:01 quinn
35 * Added code to receive close
37 * Revision 1.9 1995/06/16 10:31:38 quinn
38 * Added session timeout.
40 * Revision 1.8 1995/05/17 08:42:28 quinn
41 * Transfer auth info to backend. Allow backend to reject init gracefully.
43 * Revision 1.7 1995/05/16 08:51:08 quinn
44 * License, documentation, and memory fixes
46 * Revision 1.6 1995/05/15 11:56:41 quinn
47 * Asynchronous facilities. Restructuring of seshigh code.
49 * Revision 1.5 1995/04/20 15:13:01 quinn
52 * Revision 1.4 1995/04/10 10:23:39 quinn
53 * Some work to add scan and other things.
55 * Revision 1.3 1995/03/30 09:09:27 quinn
56 * Added state-handle and some support for asynchronous activities.
58 * Revision 1.2 1995/03/27 08:34:29 quinn
59 * Added dynamic server functionality.
60 * Released bindings to session.c (is now redundant)
62 * Revision 1.1 1995/03/14 10:28:02 quinn
63 * More work on demo server.
75 #include <sys/types.h>
79 REQUEST_IDLE, /* the request is just sitting in the queue */
80 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
81 /* this list will have more elements when acc/res control is added */
84 typedef struct request
86 int len_refid; /* length of referenceid */
87 char *refid; /* referenceid */
90 Z_APDU *request; /* Current request */
91 NMEM request_mem; /* memory handle for request */
93 int size_response; /* size of buffer */
94 int len_response; /* length of encoded data */
95 char *response; /* encoded data waiting for transmission */
102 typedef struct request_q
115 ASSOC_NEW, /* not initialized yet */
116 ASSOC_UP, /* normal operation */
117 ASSOC_DEAD /* dead. Close if input arrives */
120 typedef struct association
122 IOCHAN client_chan; /* event-loop control */
123 COMSTACK client_link; /* communication handle */
124 ODR decode; /* decoding stream */
125 ODR encode; /* encoding stream */
126 ODR print; /* printing stream (for -a) */
127 char *encode_buffer; /* temporary buffer for encoded data */
128 int encoded_len; /* length of encoded data */
129 char *input_buffer; /* input buffer (allocated by comstack) */
130 int input_buffer_len; /* length (size) of buffer */
131 int input_apdu_len; /* length of current incoming APDU */
132 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
133 void *backend; /* backend handle */
134 request_q incoming; /* Q of incoming PDUs */
135 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
136 association_state state;
138 /* session parameters */
139 int preferredMessageSize;
140 int maximumRecordSize;
141 int version; /* highest version-bit set (2 or 3) */
144 int (*bend_search) ();
145 int (*bend_present) ();
146 int (*bend_esrequest) ();
147 int (*bend_delete) ();
150 association *create_association(IOCHAN channel, COMSTACK link);
151 void destroy_association(association *h);
152 void ir_session(IOCHAN h, int event);
154 void request_enq(request_q *q, request *r);
155 request *request_head(request_q *q);
156 request *request_deq(request_q *q);
157 request *request_deq_x(request_q *q, request *r);
158 void request_initq(request_q *q);
159 void request_delq(request_q *q);
160 request *request_get(request_q *q);
161 void request_release(request *r);