2 * Copyright (C) 1995-2007, Index Data ApS
3 * See the file LICENSE for details.
5 * $Id: session.h,v 1.15 2007-08-13 16:46:19 mike Exp $
9 * \brief Internal Header for GFS.
14 #include <yaz/comstack.h>
18 #include <yaz/proto.h>
19 #include <yaz/backend.h>
20 #include <yaz/retrieval.h>
24 statserv_options_block cb;
27 cql_transform_t cql_transform;
28 CCL_bibset ccl_transform;
29 void *server_node_ptr;
33 yaz_retrieval_t retrieval;
34 struct gfs_server *next;
40 struct gfs_listen *next;
44 REQUEST_IDLE, /* the request is just sitting in the queue */
45 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
46 /* this list will have more elements when acc/res control is added */
49 typedef struct request
51 int len_refid; /* length of referenceid */
52 char *refid; /* referenceid */
55 Z_GDU *gdu_request; /* Current request */
56 Z_APDU *apdu_request; /* Current Z39.50 request */
57 NMEM request_mem; /* memory handle for request */
59 int size_response; /* size of buffer */
60 int len_response; /* length of encoded data */
61 char *response; /* encoded data waiting for transmission */
68 typedef struct request_q
81 ASSOC_NEW, /* not initialized yet */
82 ASSOC_UP, /* normal operation */
83 ASSOC_DEAD /* dead. Close if input arrives */
86 typedef struct association
88 IOCHAN client_chan; /* event-loop control */
89 COMSTACK client_link; /* communication handle */
90 ODR decode; /* decoding stream */
91 ODR encode; /* encoding stream */
92 ODR print; /* printing stream (for -a) */
93 char *encode_buffer; /* temporary buffer for encoded data */
94 int encoded_len; /* length of encoded data */
95 char *input_buffer; /* input buffer (allocated by comstack) */
96 int input_buffer_len; /* length (size) of buffer */
97 int input_apdu_len; /* length of current incoming APDU */
98 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
99 void *backend; /* backend handle */
100 request_q incoming; /* Q of incoming PDUs */
101 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
102 association_state state;
104 /* session parameters */
105 int preferredMessageSize;
106 int maximumRecordSize;
107 int version; /* highest version-bit set (2 or 3) */
109 unsigned cs_get_mask;
110 unsigned cs_put_mask;
111 unsigned cs_accept_mask;
113 struct bend_initrequest *init;
114 statserv_options_block *last_control;
116 struct gfs_server *server;
119 association *create_association(IOCHAN channel, COMSTACK link,
120 const char *apdufile);
121 void destroy_association(association *h);
122 void ir_session(IOCHAN h, int event);
124 void request_enq(request_q *q, request *r);
125 request *request_head(request_q *q);
126 request *request_deq(request_q *q);
127 request *request_deq_x(request_q *q, request *r);
128 void request_initq(request_q *q);
129 void request_delq(request_q *q);
130 request *request_get(request_q *q);
131 void request_release(request *r);
133 int statserv_must_terminate(void);
135 int control_association(association *assoc, const char *host, int force);
137 int ir_read(IOCHAN h, int event);
143 * indent-tabs-mode: nil
145 * vim: shiftwidth=4 tabstop=8 expandtab