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1/******************************************************************************
2
3
4Copyright 1993, 1998 The Open Group
5
6Permission to use, copy, modify, distribute, and sell this software and its
7documentation for any purpose is hereby granted without fee, provided that
8the above copyright notice appear in all copies and that both that
9copyright notice and this permission notice appear in supporting
10documentation.
11
12The above copyright notice and this permission notice shall be included in
13all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22Except as contained in this notice, the name of The Open Group shall not be
23used in advertising or otherwise to promote the sale, use or other dealings
24in this Software without prior written authorization from The Open Group.
25
26Author: Ralph Mor, X Consortium
27******************************************************************************/
28
29#ifndef _ICECONN_H_
30#define _ICECONN_H_
31
32#include <X11/ICE/ICElib.h>
33
34/*
35 * Data structures for ICE connection object
36 */
37
38typedef struct _IceSavedReplyWait {
39 IceReplyWaitInfo *reply_wait;
40 Bool reply_ready;
41 struct _IceSavedReplyWait *next;
42} _IceSavedReplyWait;
43
44typedef struct _IcePingWait {
45 IcePingReplyProc ping_reply_proc;
46 IcePointer client_data;
47 struct _IcePingWait *next;
48} _IcePingWait;
49
50typedef struct {
51 char *vendor;
52 char *release;
53 int version_count;
54 IcePoVersionRec *version_recs;
55 int auth_count;
56 char **auth_names;
57 IcePoAuthProc *auth_procs;
58 IceIOErrorProc io_error_proc;
59} _IcePoProtocol;
60
61typedef struct {
62 char *vendor;
63 char *release;
64 int version_count;
65 IcePaVersionRec *version_recs;
66 IceProtocolSetupProc protocol_setup_proc;
67 IceProtocolActivateProc protocol_activate_proc;
68 int auth_count;
69 char **auth_names;
70 IcePaAuthProc *auth_procs;
71 IceHostBasedAuthProc host_based_auth_proc;
72 IceIOErrorProc io_error_proc;
73} _IcePaProtocol;
74
75typedef struct {
76 char *protocol_name;
77 _IcePoProtocol *orig_client;
78 _IcePaProtocol *accept_client;
79} _IceProtocol;
80
81typedef struct {
82 Bool in_use;
83 int my_opcode;
84 _IceProtocol *protocol;
85 IcePointer client_data;
86 Bool accept_flag;
87 union {
88 IcePaProcessMsgProc accept_client;
89 IcePoProcessMsgProc orig_client;
90 } process_msg_proc;
91} _IceProcessMsgInfo;
92
93typedef struct {
94 int his_version_index;
95 int my_version_index;
96 char *his_vendor;
97 char *his_release;
98 char my_auth_index;
99 IcePointer my_auth_state;
100 Bool must_authenticate;
101} _IceConnectToMeInfo;
102
103typedef struct {
104 int his_opcode;
105 int my_opcode;
106 int his_version_index;
107 int my_version_index;
108 char *his_vendor;
109 char *his_release;
110 char my_auth_index;
111 IcePointer my_auth_state;
112 Bool must_authenticate;
113} _IceProtoSetupToMeInfo;
114
115typedef struct {
116 Bool auth_active;
117 char my_auth_index;
118 IcePointer my_auth_state;
119} _IceConnectToYouInfo;
120
121typedef struct {
122 int my_opcode;
123 int my_auth_count;
124 int *my_auth_indices;
125 Bool auth_active;
126 char my_auth_index;
127 IcePointer my_auth_state;
128} _IceProtoSetupToYouInfo;
129
130
131struct _IceConn {
132
133 unsigned int io_ok : 1; /* did an IO error occur? */
134 unsigned int swap : 1; /* do we need to swap on reads? */
135 unsigned int waiting_for_byteorder : 1; /* waiting for a ByteOrder msg? */
136 unsigned int skip_want_to_close : 1; /* avoid shutdown negotiation? */
137 unsigned int want_to_close : 1; /* did we send a WantToClose? */
138 unsigned int free_asap : 1; /* free as soon as possible */
139 unsigned int unused1 : 2; /* future use */
140 unsigned int unused2 : 8; /* future use */
141
142 IceConnectStatus connection_status; /* pending, accepted, rejected */
143
144 unsigned char my_ice_version_index; /* which version are we using? */
145
146 struct _XtransConnInfo *trans_conn; /* transport connection object */
147 unsigned long send_sequence; /* Sequence # of last msg sent */
148 unsigned long receive_sequence; /* Sequence # of last msg received */
149
150 char *connection_string; /* network connection string */
151 char *vendor; /* other client's vendor */
152 char *release; /* other client's release */
153
154 char *inbuf; /* Input buffer starting address */
155 char *inbufptr; /* Input buffer index pointer */
156 char *inbufmax; /* Input buffer maximum+1 address */
157
158 char *outbuf; /* Output buffer starting address */
159 char *outbufptr; /* Output buffer index pointer */
160 char *outbufmax; /* Output buffer maximum+1 address */
161
162 char *scratch; /* scratch buffer */
163 unsigned long scratch_size; /* scratch size */
164
165 int dispatch_level; /* IceProcessMessages dispatch level */
166
167 IcePointer context; /* context associated with caller
168 of IceOpenConnection */
169
170 /*
171 * Before we read a message, the major opcode of the message must be
172 * mapped to our corresponding major opcode (the two clients can use
173 * different opcodes for the same protocol). In order to save space,
174 * we keep track of the minimum and maximum major opcodes used by the
175 * other client. To get the information on how to process this message,
176 * we do the following...
177 *
178 * processMsgInfo = iceConn->process_msg_info[
179 * message->majorOpcode - iceConn->his_min_opcode]
180 *
181 * Note that the number of elements in the iceConn->process_msg_info
182 * array is always (iceConn->his_max_opcode - iceConn->his_min_opcode + 1).
183 * We check process_msg_info->in_use to see if the opcode is being used.
184 */
185
186 _IceProcessMsgInfo *process_msg_info;
187 char his_min_opcode; /* [1..255] */
188 char his_max_opcode; /* [1..255] */
189
190
191 /*
192 * Number of times this iceConn was returned in IceOpenConnection
193 * or IceAcceptConnection.
194 */
195
196 unsigned char open_ref_count;
197
198
199 /*
200 * Number of active protocols.
201 */
202
203 unsigned char proto_ref_count;
204
205
206 /*
207 * If this ICE connection was created with IceAcceptConnection,
208 * the listen_obj field is set to the listen object. Otherwise,
209 * the listen_obj field is NULL.
210 */
211
212 IceListenObj listen_obj;
213
214
215
216
217 /*
218 * We need to keep track of all the replies we're waiting for.
219 * Check the comments in process.c for how this works.
220 */
221
222 _IceSavedReplyWait *saved_reply_waits;
223
224
225 /*
226 * We keep track of all Pings sent from the client. When the Ping reply
227 * arrives, we remove it from the list.
228 */
229
230 _IcePingWait *ping_waits;
231
232
233 /*
234 * Some state for a client doing a Connection/Protocol Setup
235 */
236
237 _IceConnectToYouInfo *connect_to_you;
238 _IceProtoSetupToYouInfo *protosetup_to_you;
239
240
241 /*
242 * Some state for a client receiving a Connection/Protocol Setup
243 */
244
245 _IceConnectToMeInfo *connect_to_me;
246 _IceProtoSetupToMeInfo *protosetup_to_me;
247
248};
249
250#endif /* _ICECONN_H_ */