2 * Copyright (C) 1995-1999, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.20 1999-10-11 10:01:24 adam
8 * Implemented bend_sort_rr handler for frontend server.
10 * Revision 1.19 1999/04/20 09:56:48 adam
11 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
12 * Modified all encoders/decoders to reflect this change.
14 * Revision 1.18 1998/08/03 10:23:57 adam
15 * Fixed bug regarding Options for Sort.
17 * Revision 1.17 1998/07/20 12:38:43 adam
18 * Implemented delete result set service to server API.
20 * Revision 1.16 1998/03/31 11:07:45 adam
21 * Furhter work on UNIverse resource report.
22 * Added Extended Services handling in frontend server.
24 * Revision 1.15 1998/02/11 11:53:36 adam
25 * Changed code so that it compiles as C++.
27 * Revision 1.14 1998/02/10 11:03:57 adam
28 * Added support for extended handlers in backend server interface.
30 * Revision 1.13 1998/01/29 13:30:23 adam
31 * Better event handle system for NT/Unix.
33 * Revision 1.12 1997/09/01 08:53:01 adam
34 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
35 * moved a separate directory. MSV5.0 project server.dsp created.
36 * As an option, the server can now operate as an NT service.
38 * Revision 1.11 1995/11/08 17:41:40 quinn
41 * Revision 1.10 1995/08/29 11:18:01 quinn
42 * Added code to receive close
44 * Revision 1.9 1995/06/16 10:31:38 quinn
45 * Added session timeout.
47 * Revision 1.8 1995/05/17 08:42:28 quinn
48 * Transfer auth info to backend. Allow backend to reject init gracefully.
50 * Revision 1.7 1995/05/16 08:51:08 quinn
51 * License, documentation, and memory fixes
53 * Revision 1.6 1995/05/15 11:56:41 quinn
54 * Asynchronous facilities. Restructuring of seshigh code.
56 * Revision 1.5 1995/04/20 15:13:01 quinn
59 * Revision 1.4 1995/04/10 10:23:39 quinn
60 * Some work to add scan and other things.
62 * Revision 1.3 1995/03/30 09:09:27 quinn
63 * Added state-handle and some support for asynchronous activities.
65 * Revision 1.2 1995/03/27 08:34:29 quinn
66 * Added dynamic server functionality.
67 * Released bindings to session.c (is now redundant)
69 * Revision 1.1 1995/03/14 10:28:02 quinn
70 * More work on demo server.
82 #include <sys/types.h>
86 REQUEST_IDLE, /* the request is just sitting in the queue */
87 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
88 /* this list will have more elements when acc/res control is added */
91 typedef struct request
93 int len_refid; /* length of referenceid */
94 char *refid; /* referenceid */
97 Z_APDU *request; /* Current request */
98 NMEM request_mem; /* memory handle for request */
100 int size_response; /* size of buffer */
101 int len_response; /* length of encoded data */
102 char *response; /* encoded data waiting for transmission */
105 struct request *next;
109 typedef struct request_q
122 ASSOC_NEW, /* not initialized yet */
123 ASSOC_UP, /* normal operation */
124 ASSOC_DEAD /* dead. Close if input arrives */
127 typedef struct association
129 IOCHAN client_chan; /* event-loop control */
130 COMSTACK client_link; /* communication handle */
131 ODR decode; /* decoding stream */
132 ODR encode; /* encoding stream */
133 ODR print; /* printing stream (for -a) */
134 char *encode_buffer; /* temporary buffer for encoded data */
135 int encoded_len; /* length of encoded data */
136 char *input_buffer; /* input buffer (allocated by comstack) */
137 int input_buffer_len; /* length (size) of buffer */
138 int input_apdu_len; /* length of current incoming APDU */
139 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
140 void *backend; /* backend handle */
141 request_q incoming; /* Q of incoming PDUs */
142 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
143 association_state state;
145 /* session parameters */
146 int preferredMessageSize;
147 int maximumRecordSize;
148 int version; /* highest version-bit set (2 or 3) */
151 int (*bend_search) ();
152 int (*bend_present) ();
153 int (*bend_esrequest) ();
154 int (*bend_delete) ();
158 association *create_association(IOCHAN channel, COMSTACK link);
159 void destroy_association(association *h);
160 void ir_session(IOCHAN h, int event);
162 void request_enq(request_q *q, request *r);
163 request *request_head(request_q *q);
164 request *request_deq(request_q *q);
165 request *request_deq_x(request_q *q, request *r);
166 void request_initq(request_q *q);
167 void request_delq(request_q *q);
168 request *request_get(request_q *q);
169 void request_release(request *r);