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