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++];
135 /* Input a string in Unicode (uuuuuuugly, use iconv later) */
137 rdp_in_unistr(STREAM s, char *string, int len)
144 string[j++] = s->p[i];
151 void rdp_send_bitmap_update(unsigned x, unsigned y, unsigned width, unsigned height, unsigned char *data)
155 s = rdp_init_data(11*2 + width*height*3);
156 out_uint16_le(s, RDP_UPDATE_BITMAP);
157 out_uint16_le(s, 1); // one update
158 out_uint16_le(s, x); // left, top, right, bottom
160 out_uint16_le(s, x+width);
161 out_uint16_le(s, y+height);
162 out_uint16_le(s, width); // width, height
163 out_uint16_le(s, height);
164 out_uint16_le(s, 24); // bpp
165 out_uint16_le(s, 0); // no compression
166 out_uint16_le(s, width*height*3); // bufsize
168 out_uint8p(s, data, width*height*3);
171 rdp_send_data(s, RDP_DATA_PDU_UPDATE);
176 rdp_get_logon_info(STREAM s)
179 int len_domain, len_user, len_password, len_program, len_directory;
180 char domain[256], user[256], password[256], program[256], directory[256]; // FIXME
182 in_uint32_le(s, flags); // unknown
183 in_uint32_le(s, flags);
185 if (flags & RDP_LOGON_BLOB)
186 error("got RDP5-style logon packet, can't handle this yet");
188 printf("logon flags: %x\n", flags);
190 in_uint16_le(s, len_domain);
191 in_uint16_le(s, len_user);
192 in_uint16_le(s, len_password);
193 in_uint16_le(s, len_program);
194 in_uint16_le(s, len_directory);
195 rdp_in_unistr(s, domain, len_domain);
196 rdp_in_unistr(s, user, len_user);
197 rdp_in_unistr(s, password, len_password);
198 rdp_in_unistr(s, program, len_program);
199 rdp_in_unistr(s, directory, len_directory);
201 printf("domain='%s'\n", domain);
202 printf("user='%s'\n", user);
203 printf("password='%s'\n", password);
204 printf("program='%s'\n", program);
205 printf("directory='%s'\n", directory);
208 error("Unknown data at end of logon packet!");
211 /* Send a control PDU */
213 rdp_send_control(uint16 action)
217 s = rdp_init_data(8);
219 out_uint16_le(s, action);
220 out_uint16(s, 0); /* userid */
221 out_uint32(s, 0); /* control id */
224 rdp_send_data(s, RDP_DATA_PDU_CONTROL);
227 /* Send a synchronisation PDU */
229 rdp_send_synchronise(void)
233 s = rdp_init_data(4);
235 out_uint16_le(s, 1); /* type */
236 out_uint16_le(s, 1002);
239 rdp_send_data(s, RDP_DATA_PDU_SYNCHRONISE);
242 /* Receive a single input event */
244 rdp_recv_input(STREAM s, uint32 *time, uint16 *message_type, uint16 *device_flags, uint16 *param1, uint16 *param2)
246 in_uint32_le(s, *time);
247 in_uint16_le(s, *message_type);
248 in_uint16_le(s, *device_flags);
249 in_uint16_le(s, *param1);
250 in_uint16_le(s, *param2);
253 /* Disconnect from the RDP layer */