2 * Copyright (C) 1995, Index Data I/S
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.11 1995-11-08 17:41:40 quinn
10 * Revision 1.10 1995/08/29 11:18:01 quinn
11 * Added code to receive close
13 * Revision 1.9 1995/06/16 10:31:38 quinn
14 * Added session timeout.
16 * Revision 1.8 1995/05/17 08:42:28 quinn
17 * Transfer auth info to backend. Allow backend to reject init gracefully.
19 * Revision 1.7 1995/05/16 08:51:08 quinn
20 * License, documentation, and memory fixes
22 * Revision 1.6 1995/05/15 11:56:41 quinn
23 * Asynchronous facilities. Restructuring of seshigh code.
25 * Revision 1.5 1995/04/20 15:13:01 quinn
28 * Revision 1.4 1995/04/10 10:23:39 quinn
29 * Some work to add scan and other things.
31 * Revision 1.3 1995/03/30 09:09:27 quinn
32 * Added state-handle and some support for asynchronous activities.
34 * Revision 1.2 1995/03/27 08:34:29 quinn
35 * Added dynamic server functionality.
36 * Released bindings to session.c (is now redundant)
38 * Revision 1.1 1995/03/14 10:28:02 quinn
39 * More work on demo server.
51 #include <sys/types.h>
54 typedef struct request
56 int len_refid; /* length of referenceid */
57 char *refid; /* referenceid */
59 REQUEST_IDLE, /* the request is just sitting in the queue */
60 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
61 /* this list will have more elements when acc/res control is added */
64 Z_APDU *request; /* Current request */
65 NMEM request_mem; /* memory handle for request */
67 int size_response; /* size of buffer */
68 int len_response; /* length of encoded data */
69 char *response; /* encoded data waiting for transmission */
74 typedef struct request_q
84 typedef struct association
86 IOCHAN client_chan; /* event-loop control */
87 COMSTACK client_link; /* communication handle */
88 ODR decode; /* decoding stream */
89 ODR encode; /* encoding stream */
90 ODR print; /* printing stream (for -a) */
91 char *encode_buffer; /* temporary buffer for encoded data */
92 int encoded_len; /* length of encoded data */
93 char *input_buffer; /* input buffer (allocated by comstack) */
94 int input_buffer_len; /* length (size) of buffer */
95 int input_apdu_len; /* length of current incoming APDU */
96 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
97 void *backend; /* backend handle */
98 request_q incoming; /* Q of incoming PDUs */
99 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
102 ASSOC_NEW, /* not initialized yet */
103 ASSOC_UP, /* normal operation */
104 ASSOC_DEAD /* dead. Close if input arrives */
107 /* session parameters */
108 int preferredMessageSize;
109 int maximumRecordSize;
110 int version; /* highest version-bit set (2 or 3) */
113 association *create_association(IOCHAN channel, COMSTACK link);
114 void destroy_association(association *h);
115 void ir_session(IOCHAN h, int event);
117 void request_enq(request_q *q, request *r);
118 request *request_head(request_q *q);
119 request *request_deq(request_q *q);
120 void request_initq(request_q *q);
121 request *request_get(void);
122 void request_release(request *r);