0b010de477
git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@160 423420c4-83ab-492f-b58f-81f9feb106b5
728 lines
16 KiB
C
728 lines
16 KiB
C
/*
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rdesktop: A Remote Desktop Protocol client.
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Protocol services - RDP layer
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Copyright (C) Matthew Chapman 1999-2001
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "rdesktop.h"
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extern uint16 mcs_userid;
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extern char username[16];
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extern BOOL bitmap_compression;
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extern BOOL orders;
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extern BOOL encryption;
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extern BOOL desktop_save;
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uint8 *next_packet;
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uint32 rdp_shareid;
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/* Initialise an RDP packet */
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static STREAM
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rdp_init(int maxlen)
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{
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STREAM s;
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s = sec_init(encryption ? SEC_ENCRYPT : 0, maxlen + 6);
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s_push_layer(s, rdp_hdr, 6);
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return s;
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}
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/* Send an RDP packet */
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static void
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rdp_send(STREAM s, uint8 pdu_type)
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{
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uint16 length;
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s_pop_layer(s, rdp_hdr);
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length = s->end - s->p;
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out_uint16_le(s, length);
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out_uint16_le(s, (pdu_type | 0x10)); /* Version 1 */
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out_uint16_le(s, (mcs_userid + 1001));
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sec_send(s, encryption ? SEC_ENCRYPT : 0);
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}
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/* Receive an RDP packet */
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static STREAM
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rdp_recv(uint8 * type)
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{
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static STREAM rdp_s;
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uint16 length, pdu_type;
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if ((rdp_s == NULL) || (next_packet >= rdp_s->end))
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{
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rdp_s = sec_recv();
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if (rdp_s == NULL)
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return NULL;
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next_packet = rdp_s->p;
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}
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else
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{
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rdp_s->p = next_packet;
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}
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in_uint16_le(rdp_s, length);
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in_uint16_le(rdp_s, pdu_type);
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in_uint8s(rdp_s, 2); /* userid */
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*type = pdu_type & 0xf;
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#if WITH_DEBUG
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DEBUG(("RDP packet (type %x):\n", *type));
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hexdump(next_packet, length);
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#endif /* */
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next_packet += length;
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return rdp_s;
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}
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/* Initialise an RDP data packet */
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static STREAM
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rdp_init_data(int maxlen)
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{
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STREAM s;
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s = sec_init(encryption ? SEC_ENCRYPT : 0, maxlen + 18);
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s_push_layer(s, rdp_hdr, 18);
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return s;
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}
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/* Send an RDP data packet */
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static void
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rdp_send_data(STREAM s, uint8 data_pdu_type)
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{
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uint16 length;
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s_pop_layer(s, rdp_hdr);
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length = s->end - s->p;
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out_uint16_le(s, length);
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out_uint16_le(s, (RDP_PDU_DATA | 0x10));
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out_uint16_le(s, (mcs_userid + 1001));
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out_uint32_le(s, rdp_shareid);
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out_uint8(s, 0); /* pad */
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out_uint8(s, 1); /* streamid */
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out_uint16(s, (length - 14));
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out_uint8(s, data_pdu_type);
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out_uint8(s, 0); /* compress_type */
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out_uint16(s, 0); /* compress_len */
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sec_send(s, encryption ? SEC_ENCRYPT : 0);
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}
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/* Output a string in Unicode */
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void
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rdp_out_unistr(STREAM s, char *string, int len)
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{
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int i = 0, j = 0;
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len += 2;
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while (i < len)
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{
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s->p[i++] = string[j++];
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s->p[i++] = 0;
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}
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s->p += len;
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}
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/* Parse a logon info packet */
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static void
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rdp_send_logon_info(uint32 flags, char *domain, char *user,
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char *password, char *program, char *directory)
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{
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int len_domain = 2 * strlen(domain);
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int len_user = 2 * strlen(user);
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int len_password = 2 * strlen(password);
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int len_program = 2 * strlen(program);
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int len_directory = 2 * strlen(directory);
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uint32 sec_flags = encryption ? (SEC_LOGON_INFO | SEC_ENCRYPT) : SEC_LOGON_INFO;
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STREAM s;
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s = sec_init(sec_flags, 18 + len_domain + len_user + len_password
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+ len_program + len_directory + 10);
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out_uint32(s, 0);
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out_uint32_le(s, flags);
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out_uint16_le(s, len_domain);
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out_uint16_le(s, len_user);
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out_uint16_le(s, len_password);
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out_uint16_le(s, len_program);
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out_uint16_le(s, len_directory);
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rdp_out_unistr(s, domain, len_domain);
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rdp_out_unistr(s, user, len_user);
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rdp_out_unistr(s, password, len_password);
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rdp_out_unistr(s, program, len_program);
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rdp_out_unistr(s, directory, len_directory);
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s_mark_end(s);
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sec_send(s, sec_flags);
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}
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/* Send a control PDU */
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static void
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rdp_send_control(uint16 action)
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{
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STREAM s;
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s = rdp_init_data(8);
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out_uint16_le(s, action);
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out_uint16(s, 0); /* userid */
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out_uint32(s, 0); /* control id */
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s_mark_end(s);
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rdp_send_data(s, RDP_DATA_PDU_CONTROL);
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}
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/* Send a synchronisation PDU */
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static void
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rdp_send_synchronise()
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{
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STREAM s;
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s = rdp_init_data(4);
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out_uint16_le(s, 1); /* type */
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out_uint16_le(s, 1002);
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s_mark_end(s);
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rdp_send_data(s, RDP_DATA_PDU_SYNCHRONISE);
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}
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/* Send a single input event */
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void
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rdp_send_input(uint32 time, uint16 message_type, uint16 device_flags, uint16 param1, uint16 param2)
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{
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STREAM s;
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s = rdp_init_data(16);
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out_uint16_le(s, 1); /* number of events */
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out_uint16(s, 0); /* pad */
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out_uint32_le(s, time);
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out_uint16_le(s, message_type);
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out_uint16_le(s, device_flags);
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out_uint16_le(s, param1);
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out_uint16_le(s, param2);
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s_mark_end(s);
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rdp_send_data(s, RDP_DATA_PDU_INPUT);
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}
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/* Send an (empty) font information PDU */
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static void
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rdp_send_fonts(uint16 seq)
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{
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STREAM s;
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s = rdp_init_data(8);
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out_uint16(s, 0); /* number of fonts */
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out_uint16_le(s, 0x3e); /* unknown */
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out_uint16_le(s, seq); /* unknown */
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out_uint16_le(s, 0x32); /* entry size */
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s_mark_end(s);
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rdp_send_data(s, RDP_DATA_PDU_FONT2);
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}
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/* Output general capability set */
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static void
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rdp_out_general_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_GENERAL);
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out_uint16_le(s, RDP_CAPLEN_GENERAL);
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out_uint16_le(s, 1); /* OS major type */
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out_uint16_le(s, 3); /* OS minor type */
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out_uint16_le(s, 0x200); /* Protocol version */
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out_uint16(s, 0); /* Pad */
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out_uint16(s, 0); /* Compression types */
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out_uint16(s, 0); /* Pad */
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out_uint16(s, 0); /* Update capability */
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out_uint16(s, 0); /* Remote unshare capability */
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out_uint16(s, 0); /* Compression level */
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out_uint16(s, 0); /* Pad */
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}
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/* Output bitmap capability set */
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static void
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rdp_out_bitmap_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_BITMAP);
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out_uint16_le(s, RDP_CAPLEN_BITMAP);
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out_uint16_le(s, 8); /* Preferred BPP */
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out_uint16(s, 1); /* Receive 1 BPP */
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out_uint16(s, 1); /* Receive 4 BPP */
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out_uint16_le(s, 1); /* Receive 8 BPP */
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out_uint16_le(s, 800); /* Desktop width */
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out_uint16_le(s, 600); /* Desktop height */
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out_uint16(s, 0); /* Pad */
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out_uint16(s, 0); /* Allow resize */
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out_uint16_le(s, bitmap_compression ? 1 : 0); /* Support compression */
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out_uint16(s, 0); /* Unknown */
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out_uint16_le(s, 1); /* Unknown */
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out_uint16(s, 0); /* Pad */
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}
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/* Output order capability set */
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static void
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rdp_out_order_caps(STREAM s)
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{
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uint8 order_caps[32];
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memset(order_caps, 0, 32);
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order_caps[0] = 1; /* dest blt */
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order_caps[1] = 1; /* pat blt */
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order_caps[2] = 1; /* screen blt */
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order_caps[3] = 1; /* required for memblt? */
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order_caps[8] = 1; /* line */
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order_caps[9] = 1; /* line */
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order_caps[10] = 1; /* rect */
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order_caps[11] = (desktop_save == False ? 0 : 1); /* desksave */
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order_caps[13] = 1; /* memblt */
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order_caps[14] = 1; /* triblt */
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order_caps[22] = 1; /* polyline */
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order_caps[27] = 1; /* text2 */
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out_uint16_le(s, RDP_CAPSET_ORDER);
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out_uint16_le(s, RDP_CAPLEN_ORDER);
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out_uint8s(s, 20); /* Terminal desc, pad */
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out_uint16_le(s, 1); /* Cache X granularity */
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out_uint16_le(s, 20); /* Cache Y granularity */
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out_uint16(s, 0); /* Pad */
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out_uint16_le(s, 1); /* Max order level */
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out_uint16_le(s, 0x147); /* Number of fonts */
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out_uint16_le(s, 0x2a); /* Capability flags */
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out_uint8p(s, order_caps, 32); /* Orders supported */
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out_uint16_le(s, 0x6a1); /* Text capability flags */
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out_uint8s(s, 6); /* Pad */
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out_uint32(s, desktop_save == False ? 0 : 0x38400); /* Desktop cache size */
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out_uint32(s, 0); /* Unknown */
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out_uint32(s, 0x4e4); /* Unknown */
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}
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/* Output bitmap cache capability set */
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static void
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rdp_out_bmpcache_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_BMPCACHE);
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out_uint16_le(s, RDP_CAPLEN_BMPCACHE);
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out_uint8s(s, 24); /* unused */
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out_uint16_le(s, 0x258); /* entries */
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out_uint16_le(s, 0x100); /* max cell size */
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out_uint16_le(s, 0x12c); /* entries */
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out_uint16_le(s, 0x400); /* max cell size */
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out_uint16_le(s, 0x106); /* entries */
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out_uint16_le(s, 0x1000); /* max cell size */
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}
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/* Output control capability set */
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static void
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rdp_out_control_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_CONTROL);
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out_uint16_le(s, RDP_CAPLEN_CONTROL);
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out_uint16(s, 0); /* Control capabilities */
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out_uint16(s, 0); /* Remote detach */
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out_uint16_le(s, 2); /* Control interest */
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out_uint16_le(s, 2); /* Detach interest */
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}
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/* Output activation capability set */
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static void
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rdp_out_activate_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_ACTIVATE);
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out_uint16_le(s, RDP_CAPLEN_ACTIVATE);
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out_uint16(s, 0); /* Help key */
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out_uint16(s, 0); /* Help index key */
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out_uint16(s, 0); /* Extended help key */
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out_uint16(s, 0); /* Window activate */
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}
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/* Output pointer capability set */
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static void
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rdp_out_pointer_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_POINTER);
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out_uint16_le(s, RDP_CAPLEN_POINTER);
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out_uint16(s, 0); /* Colour pointer */
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out_uint16_le(s, 20); /* Cache size */
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}
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/* Output share capability set */
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static void
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rdp_out_share_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_SHARE);
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out_uint16_le(s, RDP_CAPLEN_SHARE);
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out_uint16(s, 0); /* userid */
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out_uint16(s, 0); /* pad */
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}
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/* Output colour cache capability set */
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static void
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rdp_out_colcache_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_COLCACHE);
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out_uint16_le(s, RDP_CAPLEN_COLCACHE);
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out_uint16_le(s, 6); /* cache size */
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out_uint16(s, 0); /* pad */
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}
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static uint8 canned_caps[] = {
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0x01, 0x00, 0x00, 0x00, 0x09, 0x04, 0x00, 0x00, 0x04,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x0C, 0x00, 0x08, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x0E, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00,
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0x10, 0x00, 0x34, 0x00, 0xFE,
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0x00, 0x04, 0x00, 0xFE, 0x00, 0x04, 0x00, 0xFE, 0x00, 0x08, 0x00,
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0xFE, 0x00, 0x08, 0x00, 0xFE,
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0x00, 0x10, 0x00, 0xFE, 0x00, 0x20, 0x00, 0xFE, 0x00, 0x40, 0x00,
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0xFE, 0x00, 0x80, 0x00, 0xFE,
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0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x01,
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0x02, 0x00, 0x00, 0x00
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};
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/* Output unknown capability set */
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static void
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rdp_out_unknown_caps(STREAM s)
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{
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out_uint16_le(s, RDP_CAPSET_UNKNOWN);
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out_uint16_le(s, 0x58);
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out_uint8p(s, canned_caps, RDP_CAPLEN_UNKNOWN - 4);
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}
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/* Send a confirm active PDU */
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static void
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rdp_send_confirm_active()
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{
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STREAM s;
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uint16 caplen =
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RDP_CAPLEN_GENERAL + RDP_CAPLEN_BITMAP + RDP_CAPLEN_ORDER +
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RDP_CAPLEN_BMPCACHE + RDP_CAPLEN_COLCACHE +
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RDP_CAPLEN_ACTIVATE + RDP_CAPLEN_CONTROL +
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RDP_CAPLEN_POINTER + RDP_CAPLEN_SHARE + RDP_CAPLEN_UNKNOWN + 4 /* w2k fix, why? */ ;
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s = rdp_init(14 + caplen + sizeof(RDP_SOURCE));
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out_uint32_le(s, rdp_shareid);
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out_uint16_le(s, 0x3ea); /* userid */
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out_uint16_le(s, sizeof(RDP_SOURCE));
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out_uint16_le(s, caplen);
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out_uint8p(s, RDP_SOURCE, sizeof(RDP_SOURCE));
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out_uint16_le(s, 0xd); /* num_caps */
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out_uint8s(s, 2); /* pad */
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rdp_out_general_caps(s);
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rdp_out_bitmap_caps(s);
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rdp_out_order_caps(s);
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rdp_out_bmpcache_caps(s);
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rdp_out_colcache_caps(s);
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rdp_out_activate_caps(s);
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rdp_out_control_caps(s);
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rdp_out_pointer_caps(s);
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rdp_out_share_caps(s);
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rdp_out_unknown_caps(s);
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s_mark_end(s);
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rdp_send(s, RDP_PDU_CONFIRM_ACTIVE);
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}
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|
/* Respond to a demand active PDU */
|
|
static void
|
|
process_demand_active(STREAM s)
|
|
{
|
|
uint8 type;
|
|
|
|
in_uint32_le(s, rdp_shareid);
|
|
|
|
DEBUG(("DEMAND_ACTIVE(id=0x%x)\n", rdp_shareid));
|
|
|
|
rdp_send_confirm_active();
|
|
rdp_send_synchronise();
|
|
rdp_send_control(RDP_CTL_COOPERATE);
|
|
rdp_send_control(RDP_CTL_REQUEST_CONTROL);
|
|
rdp_recv(&type); /* RDP_PDU_SYNCHRONIZE */
|
|
rdp_recv(&type); /* RDP_CTL_COOPERATE */
|
|
rdp_recv(&type); /* RDP_CTL_GRANT_CONTROL */
|
|
rdp_send_input(0, RDP_INPUT_SYNCHRONIZE, 0, 0, 0);
|
|
rdp_send_fonts(1);
|
|
rdp_send_fonts(2);
|
|
rdp_recv(&type); /* RDP_PDU_UNKNOWN 0x28 */
|
|
reset_order_state();
|
|
}
|
|
|
|
/* Process a pointer PDU */
|
|
static void
|
|
process_pointer_pdu(STREAM s)
|
|
{
|
|
uint16 message_type;
|
|
uint16 x, y, width, height, cache_idx, masklen, datalen;
|
|
uint8 *mask, *data;
|
|
HCURSOR cursor;
|
|
|
|
in_uint16_le(s, message_type);
|
|
in_uint8s(s, 2); /* pad */
|
|
|
|
switch (message_type)
|
|
{
|
|
case RDP_POINTER_MOVE:
|
|
in_uint16_le(s, x);
|
|
in_uint16_le(s, y);
|
|
if (s_check(s))
|
|
ui_move_pointer(x, y);
|
|
break;
|
|
|
|
case RDP_POINTER_COLOR:
|
|
in_uint16_le(s, cache_idx);
|
|
in_uint16_le(s, x);
|
|
in_uint16_le(s, y);
|
|
in_uint16_le(s, width);
|
|
in_uint16_le(s, height);
|
|
in_uint16_le(s, masklen);
|
|
in_uint16_le(s, datalen);
|
|
in_uint8p(s, data, datalen);
|
|
in_uint8p(s, mask, masklen);
|
|
cursor = ui_create_cursor(x, y, width, height, mask, data);
|
|
ui_set_cursor(cursor);
|
|
cache_put_cursor(cache_idx, cursor);
|
|
break;
|
|
|
|
case RDP_POINTER_CACHED:
|
|
in_uint16_le(s, cache_idx);
|
|
ui_set_cursor(cache_get_cursor(cache_idx));
|
|
break;
|
|
|
|
default:
|
|
DEBUG(("Pointer message 0x%x\n", message_type));
|
|
}
|
|
}
|
|
|
|
/* Process bitmap updates */
|
|
static void
|
|
process_bitmap_updates(STREAM s)
|
|
{
|
|
uint16 num_updates;
|
|
uint16 left, top, right, bottom, width, height;
|
|
uint16 cx, cy, bpp, compress, bufsize, size;
|
|
uint8 *data, *bmpdata;
|
|
int i;
|
|
|
|
in_uint16_le(s, num_updates);
|
|
|
|
for (i = 0; i < num_updates; i++)
|
|
{
|
|
in_uint16_le(s, left);
|
|
in_uint16_le(s, top);
|
|
in_uint16_le(s, right);
|
|
in_uint16_le(s, bottom);
|
|
in_uint16_le(s, width);
|
|
in_uint16_le(s, height);
|
|
in_uint16_le(s, bpp);
|
|
in_uint16_le(s, compress);
|
|
in_uint16_le(s, bufsize);
|
|
|
|
cx = right - left + 1;
|
|
cy = bottom - top + 1;
|
|
|
|
DEBUG(("UPDATE(l=%d,t=%d,r=%d,b=%d,w=%d,h=%d,cmp=%d)\n",
|
|
left, top, right, bottom, width, height, compress));
|
|
|
|
if (!compress)
|
|
{
|
|
int y;
|
|
bmpdata = xmalloc(width * height);
|
|
for (y = 0; y < height; y++)
|
|
{
|
|
in_uint8a(s, &bmpdata[(height - y - 1) * width], width);
|
|
}
|
|
ui_paint_bitmap(left, top, cx, cy, width, height, bmpdata);
|
|
xfree(bmpdata);
|
|
continue;
|
|
}
|
|
|
|
in_uint8s(s, 2); /* pad */
|
|
in_uint16_le(s, size);
|
|
in_uint8s(s, 4); /* line_size, final_size */
|
|
in_uint8p(s, data, size);
|
|
|
|
bmpdata = xmalloc(width * height);
|
|
if (bitmap_decompress(bmpdata, width, height, data, size))
|
|
{
|
|
ui_paint_bitmap(left, top, cx, cy, width, height, bmpdata);
|
|
}
|
|
|
|
xfree(bmpdata);
|
|
}
|
|
}
|
|
|
|
/* Process a palette update */
|
|
static void
|
|
process_palette(STREAM s)
|
|
{
|
|
HCOLOURMAP hmap;
|
|
COLOURMAP map;
|
|
uint8 *colours;
|
|
|
|
in_uint8s(s, 2); /* pad */
|
|
in_uint16_le(s, map.ncolours);
|
|
in_uint8s(s, 2); /* pad */
|
|
in_uint8p(s, colours, (map.ncolours * 3));
|
|
map.colours = (COLOURENTRY *) colours;
|
|
|
|
hmap = ui_create_colourmap(&map);
|
|
ui_set_colourmap(hmap);
|
|
}
|
|
|
|
/* Process an update PDU */
|
|
static void
|
|
process_update_pdu(STREAM s)
|
|
{
|
|
uint16 update_type;
|
|
|
|
in_uint16_le(s, update_type);
|
|
|
|
switch (update_type)
|
|
{
|
|
case RDP_UPDATE_ORDERS:
|
|
process_orders(s);
|
|
break;
|
|
|
|
case RDP_UPDATE_BITMAP:
|
|
process_bitmap_updates(s);
|
|
break;
|
|
|
|
case RDP_UPDATE_PALETTE:
|
|
process_palette(s);
|
|
break;
|
|
|
|
case RDP_UPDATE_SYNCHRONIZE:
|
|
break;
|
|
|
|
default:
|
|
unimpl("update %d\n", update_type);
|
|
}
|
|
|
|
}
|
|
|
|
/* Process data PDU */
|
|
static void
|
|
process_data_pdu(STREAM s)
|
|
{
|
|
uint8 data_pdu_type;
|
|
|
|
in_uint8s(s, 8); /* shareid, pad, streamid, length */
|
|
in_uint8(s, data_pdu_type);
|
|
in_uint8s(s, 3); /* compress_type, compress_len */
|
|
|
|
switch (data_pdu_type)
|
|
{
|
|
case RDP_DATA_PDU_UPDATE:
|
|
process_update_pdu(s);
|
|
break;
|
|
|
|
case RDP_DATA_PDU_POINTER:
|
|
process_pointer_pdu(s);
|
|
break;
|
|
|
|
case RDP_DATA_PDU_BELL:
|
|
ui_bell();
|
|
break;
|
|
|
|
case RDP_DATA_PDU_LOGON:
|
|
/* User logged on */
|
|
break;
|
|
|
|
default:
|
|
unimpl("data PDU %d\n", data_pdu_type);
|
|
}
|
|
}
|
|
|
|
/* Process incoming packets */
|
|
void
|
|
rdp_main_loop()
|
|
{
|
|
uint8 type;
|
|
STREAM s;
|
|
|
|
while ((s = rdp_recv(&type)) != NULL)
|
|
{
|
|
switch (type)
|
|
{
|
|
case RDP_PDU_DEMAND_ACTIVE:
|
|
process_demand_active(s);
|
|
break;
|
|
|
|
case RDP_PDU_DEACTIVATE:
|
|
break;
|
|
|
|
case RDP_PDU_DATA:
|
|
process_data_pdu(s);
|
|
break;
|
|
|
|
default:
|
|
unimpl("PDU %d\n", type);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Establish a connection up to the RDP layer */
|
|
BOOL
|
|
rdp_connect(char *server, uint32 flags, char *domain, char *password,
|
|
char *command, char *directory)
|
|
{
|
|
if (!sec_connect(server))
|
|
return False;
|
|
|
|
rdp_send_logon_info(flags, domain, username, password, command, directory);
|
|
return True;
|
|
}
|
|
|
|
/* Disconnect from the RDP layer */
|
|
void
|
|
rdp_disconnect()
|
|
{
|
|
sec_disconnect();
|
|
}
|