1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2012 Index Data.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Index Data nor the names of its contributors
13 * may be used to endorse or promote products derived from this
14 * software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * \brief Internal Header for GFS.
34 #include <yaz/comstack.h>
38 #include <yaz/proto.h>
39 #include <yaz/backend.h>
40 #include <yaz/retrieval.h>
44 statserv_options_block cb;
48 cql_transform_t cql_transform;
49 CCL_bibset ccl_transform;
50 void *server_node_ptr;
54 yaz_retrieval_t retrieval;
55 struct gfs_server *next;
61 struct gfs_listen *next;
65 REQUEST_IDLE, /* the request is just sitting in the queue */
66 REQUEST_PENDING /* operation pending (b'end processing or network I/O*/
67 /* this list will have more elements when acc/res control is added */
70 typedef struct request
74 Z_GDU *gdu_request; /* Current request */
75 Z_APDU *apdu_request; /* Current Z39.50 request */
76 NMEM request_mem; /* memory handle for request */
78 int size_response; /* size of buffer */
79 int len_response; /* length of encoded data */
80 char *response; /* encoded data waiting for transmission */
87 typedef struct request_q
100 ASSOC_NEW, /* not initialized yet or HTTP session */
101 ASSOC_UP, /* Z39.50 session is UP */
102 ASSOC_DEAD /* dead. Close if input arrives */
105 typedef struct association
107 IOCHAN client_chan; /* event-loop control */
108 COMSTACK client_link; /* communication handle */
109 ODR decode; /* decoding stream */
110 ODR encode; /* encoding stream */
111 ODR print; /* printing stream (for -a) */
112 char *encode_buffer; /* temporary buffer for encoded data */
113 int encoded_len; /* length of encoded data */
114 char *input_buffer; /* input buffer (allocated by comstack) */
115 int input_buffer_len; /* length (size) of buffer */
116 int input_apdu_len; /* length of current incoming APDU */
117 oid_proto proto; /* protocol (PROTO_Z3950/PROTO_SR) */
118 void *backend; /* backend handle */
119 request_q incoming; /* Q of incoming PDUs */
120 request_q outgoing; /* Q of outgoing data buffers (enc. PDUs) */
121 association_state state;
123 /* session parameters */
124 int preferredMessageSize;
125 int maximumRecordSize;
126 int version; /* highest version-bit set (2 or 3) */
132 struct bend_initrequest *init;
133 statserv_options_block *last_control;
135 struct gfs_server *server;
138 association *create_association(IOCHAN channel, COMSTACK link,
139 const char *apdufile);
140 void destroy_association(association *h);
141 void ir_session(IOCHAN h, int event);
143 void request_enq(request_q *q, request *r);
144 request *request_head(request_q *q);
145 request *request_deq(request_q *q);
146 request *request_deq_x(request_q *q, request *r);
147 void request_initq(request_q *q);
148 void request_delq(request_q *q);
149 request *request_get(request_q *q);
150 void request_release(request *r);
152 int control_association(association *assoc, const char *host, int force);
154 int ir_read(IOCHAN h, int event);
160 * c-file-style: "Stroustrup"
161 * indent-tabs-mode: nil
163 * vim: shiftwidth=4 tabstop=8 expandtab