2 * Copyright (C) 1995-1999, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.25 2001-07-19 19:51:42 adam
8 * Added typecasts to make C++ happy.
10 * Revision 1.24 2000/11/23 10:58:32 adam
11 * SSL comstack support. Separate POSIX thread support library.
13 * Revision 1.23 2000/04/05 07:39:55 adam
14 * Added shared library support (libtool).
16 * Revision 1.22 2000/03/20 19:06:25 adam
17 * Added Segment request for fronend server. Work on admin for client.
19 * Revision 1.21 1999/11/30 13:47:12 adam
20 * Improved installation. Moved header files to include/yaz.
22 * Revision 1.20 1999/10/11 10:01:24 adam
23 * Implemented bend_sort_rr handler for frontend server.
25 * Revision 1.19 1999/04/20 09:56:48 adam
26 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
27 * Modified all encoders/decoders to reflect this change.
29 * Revision 1.18 1998/08/03 10:23:57 adam
30 * Fixed bug regarding Options for Sort.
32 * Revision 1.17 1998/07/20 12:38:43 adam
33 * Implemented delete result set service to server API.
35 * Revision 1.16 1998/03/31 11:07:45 adam
36 * Furhter work on UNIverse resource report.
37 * Added Extended Services handling in frontend server.
39 * Revision 1.15 1998/02/11 11:53:36 adam
40 * Changed code so that it compiles as C++.
42 * Revision 1.14 1998/02/10 11:03:57 adam
43 * Added support for extended handlers in backend server interface.
45 * Revision 1.13 1998/01/29 13:30:23 adam
46 * Better event handle system for NT/Unix.
48 * Revision 1.12 1997/09/01 08:53:01 adam
49 * New windows NT/95 port using MSV5.0. The test server 'ztest' was
50 * moved a separate directory. MSV5.0 project server.dsp created.
51 * As an option, the server can now operate as an NT service.
53 * Revision 1.11 1995/11/08 17:41:40 quinn
56 * Revision 1.10 1995/08/29 11:18:01 quinn
57 * Added code to receive close
59 * Revision 1.9 1995/06/16 10:31:38 quinn
60 * Added session timeout.
62 * Revision 1.8 1995/05/17 08:42:28 quinn
63 * Transfer auth info to backend. Allow backend to reject init gracefully.
65 * Revision 1.7 1995/05/16 08:51:08 quinn
66 * License, documentation, and memory fixes
68 * Revision 1.6 1995/05/15 11:56:41 quinn
69 * Asynchronous facilities. Restructuring of seshigh code.
71 * Revision 1.5 1995/04/20 15:13:01 quinn
74 * Revision 1.4 1995/04/10 10:23:39 quinn
75 * Some work to add scan and other things.
77 * Revision 1.3 1995/03/30 09:09:27 quinn
78 * Added state-handle and some support for asynchronous activities.
80 * Revision 1.2 1995/03/27 08:34:29 quinn
81 * Added dynamic server functionality.
82 * Released bindings to session.c (is now redundant)
84 * Revision 1.1 1995/03/14 10:28:02 quinn
85 * More work on demo server.
93 #include <sys/types.h>
94 #include <yaz/comstack.h>
97 #include <yaz/proto.h>
101 REQUEST_IDLE, /* the request is just sitting in the queue */
102 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
103 /* this list will have more elements when acc/res control is added */
106 typedef struct request
108 int len_refid; /* length of referenceid */
109 char *refid; /* referenceid */
112 Z_APDU *apdu_request; /* Current request */
113 NMEM request_mem; /* memory handle for request */
115 int size_response; /* size of buffer */
116 int len_response; /* length of encoded data */
117 char *response; /* encoded data waiting for transmission */
120 struct request *next;
124 typedef struct request_q
137 ASSOC_NEW, /* not initialized yet */
138 ASSOC_UP, /* normal operation */
139 ASSOC_DEAD /* dead. Close if input arrives */
142 typedef struct association
144 IOCHAN client_chan; /* event-loop control */
145 COMSTACK client_link; /* communication handle */
146 ODR decode; /* decoding stream */
147 ODR encode; /* encoding stream */
148 ODR print; /* printing stream (for -a) */
149 char *encode_buffer; /* temporary buffer for encoded data */
150 int encoded_len; /* length of encoded data */
151 char *input_buffer; /* input buffer (allocated by comstack) */
152 int input_buffer_len; /* length (size) of buffer */
153 int input_apdu_len; /* length of current incoming APDU */
154 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
155 void *backend; /* backend handle */
156 request_q incoming; /* Q of incoming PDUs */
157 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
158 association_state state;
160 /* session parameters */
161 int preferredMessageSize;
162 int maximumRecordSize;
163 int version; /* highest version-bit set (2 or 3) */
165 unsigned cs_get_mask;
166 unsigned cs_put_mask;
167 unsigned cs_accept_mask;
169 struct bend_initrequest *init;
172 int (*bend_search) ();
173 int (*bend_present) ();
174 int (*bend_esrequest) ();
175 int (*bend_delete) ();
177 int (*bend_segment) ();
181 association *create_association(IOCHAN channel, COMSTACK link);
182 void destroy_association(association *h);
183 void ir_session(IOCHAN h, int event);
185 void request_enq(request_q *q, request *r);
186 request *request_head(request_q *q);
187 request *request_deq(request_q *q);
188 request *request_deq_x(request_q *q, request *r);
189 void request_initq(request_q *q);
190 void request_delq(request_q *q);
191 request *request_get(request_q *q);
192 void request_release(request *r);