2 * Copyright (C) 1995, Index Data I/S
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.9 1995-06-16 10:31:38 quinn
8 * Added session timeout.
10 * Revision 1.8 1995/05/17 08:42:28 quinn
11 * Transfer auth info to backend. Allow backend to reject init gracefully.
13 * Revision 1.7 1995/05/16 08:51:08 quinn
14 * License, documentation, and memory fixes
16 * Revision 1.6 1995/05/15 11:56:41 quinn
17 * Asynchronous facilities. Restructuring of seshigh code.
19 * Revision 1.5 1995/04/20 15:13:01 quinn
22 * Revision 1.4 1995/04/10 10:23:39 quinn
23 * Some work to add scan and other things.
25 * Revision 1.3 1995/03/30 09:09:27 quinn
26 * Added state-handle and some support for asynchronous activities.
28 * Revision 1.2 1995/03/27 08:34:29 quinn
29 * Added dynamic server functionality.
30 * Released bindings to session.c (is now redundant)
32 * Revision 1.1 1995/03/14 10:28:02 quinn
33 * More work on demo server.
45 #include <sys/types.h>
48 typedef struct request
50 int len_refid; /* length of referenceid */
51 char *refid; /* referenceid */
53 REQUEST_IDLE, /* the request is just sitting in the queue */
54 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
55 /* this list will have more elements when acc/res control is added */
58 Z_APDU *request; /* Current request */
59 ODR_MEM request_mem; /* ODR memory handle for request */
61 int size_response; /* size of buffer */
62 int len_response; /* length of encoded data */
63 char *response; /* encoded data waiting for transmission */
68 typedef struct request_q
78 typedef struct association
80 IOCHAN client_chan; /* event-loop control */
81 COMSTACK client_link; /* communication handle */
82 ODR decode; /* decoding stream */
83 ODR encode; /* encoding stream */
84 ODR print; /* printing stream (for -a) */
85 char *encode_buffer; /* temporary buffer for encoded data */
86 int encoded_len; /* length of encoded data */
87 char *input_buffer; /* input buffer (allocated by comstack) */
88 int input_buffer_len; /* length (size) of buffer */
89 int input_apdu_len; /* length of current incoming APDU */
90 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
91 void *backend; /* backend handle */
92 request_q incoming; /* Q of incoming PDUs */
93 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
94 int rejected; /* session rejected */
96 /* session parameters */
97 int preferredMessageSize;
98 int maximumRecordSize;
101 association *create_association(IOCHAN channel, COMSTACK link);
102 void destroy_association(association *h);
103 void ir_session(IOCHAN h, int event);
105 void request_enq(request_q *q, request *r);
106 request *request_head(request_q *q);
107 request *request_deq(request_q *q);
108 void request_initq(request_q *q);
109 request *request_get(void);
110 void request_release(request *r);