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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
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 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2006
librdp iso layer
*/
#include "rdp.h"
/*****************************************************************************/
struct rdp_iso* APP_CC
rdp_iso_create(struct rdp_mcs* owner)
{
struct rdp_iso* self;
self = (struct rdp_iso*)g_malloc(sizeof(struct rdp_iso), 1);
self->mcs_layer = owner;
self->tcp_layer = rdp_tcp_create(self);
return self;
}
/*****************************************************************************/
void APP_CC
rdp_iso_delete(struct rdp_iso* self)
{
if (self == 0)
{
return;
}
rdp_tcp_delete(self->tcp_layer);
g_free(self);
}
/*****************************************************************************/
/* returns error */
static int APP_CC
rdp_iso_recv_msg(struct rdp_iso* self, struct stream* s, int* code)
{
int ver;
int len;
*code = 0;
if (rdp_tcp_recv(self->tcp_layer, s, 4) != 0)
{
DEBUG((" out rdp_iso_recv_msg error rdp_tcp_recv 1 failed\r\n"));
return 1;
}
in_uint8(s, ver);
if (ver != 3)
{
DEBUG((" out rdp_iso_recv_msg error ver != 3\r\n"));
return 1;
}
in_uint8s(s, 1);
in_uint16_be(s, len);
if (rdp_tcp_recv(self->tcp_layer, s, len - 4) != 0)
{
DEBUG((" out rdp_iso_recv_msg error rdp_tcp_recv 2 failed\r\n"));
return 1;
}
in_uint8s(s, 1);
in_uint8(s, *code);
if (*code == ISO_PDU_DT)
{
in_uint8s(s, 1);
}
else
{
in_uint8s(s, 5);
}
return 0;
}
/*****************************************************************************/
static int APP_CC
rdp_iso_send_msg(struct rdp_iso* self, struct stream* s, int code)
{
if (rdp_tcp_init(self->tcp_layer, s) != 0)
{
return 1;
}
out_uint8(s, 3);
out_uint8(s, 0);
out_uint16_be(s, 11); /* length */
out_uint8(s, 6);
out_uint8(s, code);
out_uint16_le(s, 0);
out_uint16_le(s, 0);
out_uint8(s, 0);
s_mark_end(s);
if (rdp_tcp_send(self->tcp_layer, s) != 0)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_iso_recv(struct rdp_iso* self, struct stream* s)
{
int code;
if (rdp_iso_recv_msg(self, s, &code) != 0)
{
return 1;
}
if (code != ISO_PDU_DT)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_iso_init(struct rdp_iso* self, struct stream* s)
{
rdp_tcp_init(self->tcp_layer, s);
s_push_layer(s, iso_hdr, 7);
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_iso_send(struct rdp_iso* self, struct stream* s)
{
int len;
s_pop_layer(s, iso_hdr);
len = s->end - s->p;
out_uint8(s, 3);
out_uint8(s, 0);
out_uint16_be(s, len);
out_uint8(s, 2);
out_uint8(s, ISO_PDU_DT);
out_uint8(s, 0x80);
if (rdp_tcp_send(self->tcp_layer, s) != 0)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_iso_connect(struct rdp_iso* self, char* ip, char* port)
{
int code;
struct stream* s;
DEBUG((" in rdp_iso_connect\r\n"));
make_stream(s);
init_stream(s, 8192);
if (rdp_tcp_connect(self->tcp_layer, ip, port) != 0)
{
free_stream(s);
DEBUG((" out rdp_iso_connect error rdp_tcp_connect failed\r\n"));
return 1;
}
if (rdp_iso_send_msg(self, s, ISO_PDU_CR) != 0)
{
free_stream(s);
rdp_tcp_disconnect(self->tcp_layer);
DEBUG((" out rdp_iso_connect error rdp_iso_send_msg failed\r\n"));
return 1;
}
init_stream(s, 8192);
if (rdp_iso_recv_msg(self, s, &code) != 0)
{
free_stream(s);
rdp_tcp_disconnect(self->tcp_layer);
DEBUG((" out rdp_iso_connect error rdp_iso_recv_msg failed\r\n"));
return 1;
}
if (code != ISO_PDU_CC)
{
free_stream(s);
rdp_tcp_disconnect(self->tcp_layer);
DEBUG((" out rdp_iso_connect error code != ISO_PDU_CC\r\n"));
return 1;
}
free_stream(s);
DEBUG((" out rdp_iso_connect\r\n"));
return 0;
}
/*****************************************************************************/
int APP_CC
rdp_iso_disconnect(struct rdp_iso* self)
{
struct stream* s;
make_stream(s);
init_stream(s, 8192);
rdp_iso_send_msg(self, s, ISO_PDU_DR);
rdp_tcp_disconnect(self->tcp_layer);
free_stream(s);
return 0;
}
|
