1 /* -*- c-basic-offset: 8 -*-
2 rdesktop: A Remote Desktop Protocol client.
3 Protocol services - RDP layer
4 Copyright (C) Matthew Chapman 1999-2002
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 extern uint16 g_mcs_userid;
25 extern char g_username[16];
26 extern BOOL g_bitmap_compression;
28 BOOL g_encryption = 0;
29 extern BOOL g_desktop_save;
30 extern BOOL g_use_rdp5;
31 extern uint16 g_server_rdp_version;
32 extern int g_server_bpp;
38 static uint32 g_packetno;
41 /* Receive an RDP packet */
43 rdp_recv(uint8 * type)
46 uint16 length, pdu_type;
48 if ((rdp_s == NULL) || (g_next_packet >= rdp_s->end))
54 g_next_packet = rdp_s->p;
58 rdp_s->p = g_next_packet;
61 in_uint16_le(rdp_s, length);
62 /* 32k packets are really 8, keepalive fix */
69 in_uint16_le(rdp_s, pdu_type);
70 in_uint8s(rdp_s, 2); /* userid */
71 *type = pdu_type & 0xf;
74 DEBUG(("RDP packet #%d, (type %x, length %u)\n", ++g_packetno, *type, length));
75 hexdump(g_next_packet, length);
78 g_next_packet += length;
82 /* Initialise an RDP data packet */
84 rdp_init_data(int maxlen)
88 s = sec_init(g_encryption ? SEC_ENCRYPT : 0, maxlen + 18);
89 s_push_layer(s, rdp_hdr, 18);
94 /* Send an RDP data packet */
96 rdp_send_data(STREAM s, uint8 data_pdu_type)
100 s_pop_layer(s, rdp_hdr);
101 length = s->end - s->p;
103 out_uint16_le(s, length);
104 out_uint16_le(s, (RDP_PDU_DATA | 0x10));
105 out_uint16_le(s, (g_mcs_userid + 1001));
107 out_uint32_le(s, g_rdp_shareid);
108 out_uint8(s, 0); /* pad */
109 out_uint8(s, 1); /* streamid */
110 out_uint16_le(s, (length - 14));
111 out_uint8(s, data_pdu_type);
112 out_uint8(s, 0); /* compress_type */
113 out_uint16(s, 0); /* compress_len */
115 sec_send(s, g_encryption ? SEC_ENCRYPT : 0);
118 /* Output a string in Unicode */
120 rdp_out_unistr(STREAM s, char *string, int len)
128 s->p[i++] = string[j++];
136 /* Send a control PDU */
138 rdp_send_control(uint16 action)
142 s = rdp_init_data(8);
144 out_uint16_le(s, action);
145 out_uint16(s, 0); /* userid */
146 out_uint32(s, 0); /* control id */
149 rdp_send_data(s, RDP_DATA_PDU_CONTROL);
152 /* Send a synchronisation PDU */
154 rdp_send_synchronise(void)
158 s = rdp_init_data(4);
160 out_uint16_le(s, 1); /* type */
161 out_uint16_le(s, 1002);
164 rdp_send_data(s, RDP_DATA_PDU_SYNCHRONISE);
167 /* Send a single input event */
169 rdp_send_input(uint32 time, uint16 message_type, uint16 device_flags, uint16 param1, uint16 param2)
173 s = rdp_init_data(16);
175 out_uint16_le(s, 1); /* number of events */
176 out_uint16(s, 0); /* pad */
178 out_uint32_le(s, time);
179 out_uint16_le(s, message_type);
180 out_uint16_le(s, device_flags);
181 out_uint16_le(s, param1);
182 out_uint16_le(s, param2);
185 rdp_send_data(s, RDP_DATA_PDU_INPUT);
188 /* Disconnect from the RDP layer */