~lightdm-team/lightdm/1.4

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/*
 * Copyright (C) 2010-2011 Robert Ancell.
 * Author: Robert Ancell <robert.ancell@canonical.com>
 * 
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
 * license.
 */

#ifndef _XDMCP_PROTOCOL_H_
#define _XDMCP_PROTOCOL_H_

#include <glib.h>

#define XDMCP_VERSION 1

typedef enum
{
    XDMCP_BroadcastQuery = 1,
    XDMCP_Query          = 2,
    XDMCP_IndirectQuery  = 3,
    XDMCP_ForwardQuery   = 4,
    XDMCP_Willing        = 5,
    XDMCP_Unwilling      = 6,
    XDMCP_Request        = 7,
    XDMCP_Accept         = 8,
    XDMCP_Decline        = 9,
    XDMCP_Manage         = 10,
    XDMCP_Refuse         = 11,
    XDMCP_Failed         = 12,
    XDMCP_KeepAlive      = 13,
    XDMCP_Alive          = 14
} XDMCPOpcode;

typedef struct
{
    guint16 length;
    guchar *data;
} XDMCPData;

typedef struct
{
    guint16 type;
    XDMCPData address;
} XDMCPConnection;

typedef struct
{
    XDMCPOpcode opcode;
  
    union
    {
        struct
        {
            gchar **authentication_names;
        } Query;

        struct
        {
            gchar *client_address;
            gchar *client_port;
            gchar **authentication_names;
        } ForwardQuery;

        struct
        {
            gchar *authentication_name;
            gchar *hostname;
            gchar *status;
        } Willing;

        struct
        {
            gchar *hostname;
            gchar *status;
        } Unwilling;

        struct
        {
            guint16 display_number;
            guint8 n_connections;
            XDMCPConnection *connections;
            gchar *authentication_name;
            XDMCPData authentication_data;
            gchar **authorization_names;
            gchar *manufacturer_display_id;
        } Request;

        struct
        {
            guint32 session_id;
            gchar *authentication_name;
            XDMCPData authentication_data;
            gchar *authorization_name;
            XDMCPData authorization_data;
        } Accept;

        struct
        {
            gchar *status;
            gchar *authentication_name;
            XDMCPData authentication_data;
        } Decline;

        struct
        {
            guint32 session_id;
            guint16 display_number;
            gchar *display_class;
        } Manage;

        struct
        {
            guint32 session_id;
        } Refuse;

        struct
        {
            guint32 session_id;
            gchar *status;
        } Failed;

        struct
        {
            guint16 display_number;
            guint32 session_id;
        } KeepAlive;

        struct
        {
            gboolean session_running;
            guint32 session_id;
        } Alive;
    };
} XDMCPPacket;

XDMCPPacket *xdmcp_packet_alloc (XDMCPOpcode opcode);

XDMCPPacket *xdmcp_packet_decode (const guchar *data, gsize length);

gssize xdmcp_packet_encode (XDMCPPacket *packet, guchar *data, gsize length);

gchar *xdmcp_packet_tostring (XDMCPPacket *packet);

void xdmcp_packet_free (XDMCPPacket *packet);

#endif /* _XDMCP_PROTOCOL_H_ */