Diffstat (limited to 'noncore/net/opierdesktop/rdp.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/net/opierdesktop/rdp.cpp | 748 |
1 files changed, 748 insertions, 0 deletions
diff --git a/noncore/net/opierdesktop/rdp.cpp b/noncore/net/opierdesktop/rdp.cpp new file mode 100644 index 0000000..bab8568 --- a/dev/null +++ b/noncore/net/opierdesktop/rdp.cpp @@ -0,0 +1,748 @@ +/* + rdesktop: A Remote Desktop Protocol client. + Protocol services - RDP layer + Copyright (C) Matthew Chapman 1999-2002 + + 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. +*/ + +#include "rdesktop.h" + +extern uint16 mcs_userid; +extern char username[16]; +extern BOOL bitmap_compression; +extern BOOL orders; +extern BOOL encryption; +extern BOOL desktop_save; + +uint8 *next_packet; +uint32 rdp_shareid; + +/* Initialise an RDP packet */ +static STREAM +rdp_init(int maxlen) +{ + STREAM s; + + s = sec_init(encryption ? SEC_ENCRYPT : 0, maxlen + 6); + s_push_layer(s, rdp_hdr, 6); + + return s; +} + +/* Send an RDP packet */ +static void +rdp_send(STREAM s, uint8 pdu_type) +{ + uint16 length; + + s_pop_layer(s, rdp_hdr); + length = s->end - s->p; + + out_uint16_le(s, length); + out_uint16_le(s, (pdu_type | 0x10)); /* Version 1 */ + out_uint16_le(s, (mcs_userid + 1001)); + + sec_send(s, encryption ? SEC_ENCRYPT : 0); +} + +/* Receive an RDP packet */ +STREAM +rdp_recv(uint8 * type) +{ + static STREAM rdp_s; + uint16 length, pdu_type; + + if ((rdp_s == NULL) || (next_packet >= rdp_s->end)) + { + rdp_s = sec_recv(); + if (rdp_s == NULL) + return NULL; + + next_packet = rdp_s->p; + } + else + { + rdp_s->p = next_packet; + } + + in_uint16_le(rdp_s, length); + /* 32k packets are really 8, keepalive fix */ + if (length == 0x8000) + { + next_packet += 8; + *type = 0; + return rdp_s; + } + in_uint16_le(rdp_s, pdu_type); + in_uint8s(rdp_s, 2); /* userid */ + *type = pdu_type & 0xf; + +#if WITH_DEBUG + DEBUG(("RDP packet (type %x):\n", *type)); + hexdump(next_packet, length); +#endif /* */ + + next_packet += length; + return rdp_s; +} + +/* Initialise an RDP data packet */ +static STREAM +rdp_init_data(int maxlen) +{ + STREAM s; + + s = sec_init(encryption ? SEC_ENCRYPT : 0, maxlen + 18); + s_push_layer(s, rdp_hdr, 18); + + return s; +} + +/* Send an RDP data packet */ +static void +rdp_send_data(STREAM s, uint8 data_pdu_type) +{ + uint16 length; + + s_pop_layer(s, rdp_hdr); + length = s->end - s->p; + + out_uint16_le(s, length); + out_uint16_le(s, (RDP_PDU_DATA | 0x10)); + out_uint16_le(s, (mcs_userid + 1001)); + + out_uint32_le(s, rdp_shareid); + out_uint8(s, 0); /* pad */ + out_uint8(s, 1); /* streamid */ + out_uint16_le(s, (length - 14)); + out_uint8(s, data_pdu_type); + out_uint8(s, 0); /* compress_type */ + out_uint16(s, 0); /* compress_len */ + + sec_send(s, encryption ? SEC_ENCRYPT : 0); +} + +/* Output a string in Unicode */ +void +rdp_out_unistr(STREAM s, char *string, int len) +{ + int i = 0, j = 0; + + len += 2; + + while (i < len) + { + s->p[i++] = string[j++]; + s->p[i++] = 0; + } + + s->p += len; +} + +/* Parse a logon info packet */ +static void +rdp_send_logon_info(uint32 flags, char *domain, char *user, + char *password, char *program, char *directory) +{ + int len_domain = 2 * strlen(domain); + int len_user = 2 * strlen(user); + int len_password = 2 * strlen(password); + int len_program = 2 * strlen(program); + int len_directory = 2 * strlen(directory); + uint32 sec_flags = encryption ? (SEC_LOGON_INFO | SEC_ENCRYPT) : SEC_LOGON_INFO; + STREAM s; + + s = sec_init(sec_flags, 18 + len_domain + len_user + len_password + + len_program + len_directory + 10); + + out_uint32(s, 0); + out_uint32_le(s, flags); + out_uint16_le(s, len_domain); + out_uint16_le(s, len_user); + out_uint16_le(s, len_password); + out_uint16_le(s, len_program); + out_uint16_le(s, len_directory); + rdp_out_unistr(s, domain, len_domain); + rdp_out_unistr(s, user, len_user); + rdp_out_unistr(s, password, len_password); + rdp_out_unistr(s, program, len_program); + rdp_out_unistr(s, directory, len_directory); + + s_mark_end(s); + sec_send(s, sec_flags); +} + +/* Send a control PDU */ +static void +rdp_send_control(uint16 action) +{ + STREAM s; + + s = rdp_init_data(8); + + out_uint16_le(s, action); + out_uint16(s, 0); /* userid */ + out_uint32(s, 0); /* control id */ + + s_mark_end(s); + rdp_send_data(s, RDP_DATA_PDU_CONTROL); +} + +/* Send a synchronisation PDU */ +static void +rdp_send_synchronise(void) +{ + STREAM s; + + s = rdp_init_data(4); + + out_uint16_le(s, 1); /* type */ + out_uint16_le(s, 1002); + + s_mark_end(s); + rdp_send_data(s, RDP_DATA_PDU_SYNCHRONISE); +} + +/* Send a single input event */ +void +rdp_send_input(uint32 time, uint16 message_type, uint16 device_flags, uint16 param1, uint16 param2) +{ + STREAM s; + + s = rdp_init_data(16); + + out_uint16_le(s, 1); /* number of events */ + out_uint16(s, 0); /* pad */ + + out_uint32_le(s, time); + out_uint16_le(s, message_type); + out_uint16_le(s, device_flags); + out_uint16_le(s, param1); + out_uint16_le(s, param2); + + s_mark_end(s); + rdp_send_data(s, RDP_DATA_PDU_INPUT); +} + +/* Send an (empty) font information PDU */ +static void +rdp_send_fonts(uint16 seq) +{ + STREAM s; + + s = rdp_init_data(8); + + out_uint16(s, 0); /* number of fonts */ + out_uint16_le(s, 0x3e); /* unknown */ + out_uint16_le(s, seq); /* unknown */ + out_uint16_le(s, 0x32); /* entry size */ + + s_mark_end(s); + rdp_send_data(s, RDP_DATA_PDU_FONT2); +} + +/* Output general capability set */ +static void +rdp_out_general_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_GENERAL); + out_uint16_le(s, RDP_CAPLEN_GENERAL); + + out_uint16_le(s, 1); /* OS major type */ + out_uint16_le(s, 3); /* OS minor type */ + out_uint16_le(s, 0x200); /* Protocol version */ + out_uint16(s, 0); /* Pad */ + out_uint16(s, 0); /* Compression types */ + out_uint16(s, 0); /* Pad */ + out_uint16(s, 0); /* Update capability */ + out_uint16(s, 0); /* Remote unshare capability */ + out_uint16(s, 0); /* Compression level */ + out_uint16(s, 0); /* Pad */ +} + +/* Output bitmap capability set */ +static void +rdp_out_bitmap_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_BITMAP); + out_uint16_le(s, RDP_CAPLEN_BITMAP); + + out_uint16_le(s, 8); /* Preferred BPP */ + out_uint16_le(s, 1); /* Receive 1 BPP */ + out_uint16_le(s, 1); /* Receive 4 BPP */ + out_uint16_le(s, 1); /* Receive 8 BPP */ + out_uint16_le(s, 800); /* Desktop width */ + out_uint16_le(s, 600); /* Desktop height */ + out_uint16(s, 0); /* Pad */ + out_uint16(s, 0); /* Allow resize */ + out_uint16_le(s, bitmap_compression ? 1 : 0); /* Support compression */ + out_uint16(s, 0); /* Unknown */ + out_uint16_le(s, 1); /* Unknown */ + out_uint16(s, 0); /* Pad */ +} + +/* Output order capability set */ +static void +rdp_out_order_caps(STREAM s) +{ + uint8 order_caps[32]; + + + memset(order_caps, 0, 32); + order_caps[0] = 1; /* dest blt */ + order_caps[1] = 1; /* pat blt */ + order_caps[2] = 1; /* screen blt */ +// order_caps[3] = 1; /* required for memblt? */ + order_caps[8] = 1; /* line */ + order_caps[9] = 1; /* line */ + order_caps[10] = 1; /* rect */ + order_caps[11] = (desktop_save == False ? 0 : 1); /* desksave */ + order_caps[13] = 1; /* memblt */ + order_caps[14] = 1; /* triblt */ + order_caps[22] = 1; /* polyline */ + order_caps[27] = 1; /* text2 */ + out_uint16_le(s, RDP_CAPSET_ORDER); + out_uint16_le(s, RDP_CAPLEN_ORDER); + + out_uint8s(s, 20); /* Terminal desc, pad */ + out_uint16_le(s, 1); /* Cache X granularity */ + out_uint16_le(s, 20); /* Cache Y granularity */ + out_uint16(s, 0); /* Pad */ + out_uint16_le(s, 1); /* Max order level */ + out_uint16_le(s, 0x147); /* Number of fonts */ + out_uint16_le(s, 0x2a); /* Capability flags */ + out_uint8p(s, order_caps, 32); /* Orders supported */ + out_uint16_le(s, 0x6a1); /* Text capability flags */ + out_uint8s(s, 6); /* Pad */ + out_uint32_le(s, desktop_save == False ? 0 : 0x38400); /* Desktop cache size */ +// out_uint32_le(s, 0); // desktop cache set to 0 + out_uint32(s, 0); /* Unknown */ + out_uint32_le(s, 0x4e4); /* Unknown */ +} + +/* Output bitmap cache capability set */ +static void +rdp_out_bmpcache_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_BMPCACHE); + out_uint16_le(s, RDP_CAPLEN_BMPCACHE); + + out_uint8s(s, 24); /* unused */ + out_uint16_le(s, 0x258); /* entries */ + out_uint16_le(s, 0x100); /* max cell size */ + out_uint16_le(s, 0x12c); /* entries */ + out_uint16_le(s, 0x400); /* max cell size */ + out_uint16_le(s, 0x106); /* entries */ + out_uint16_le(s, 0x1000); /* max cell size */ +} + +/* Output control capability set */ +static void +rdp_out_control_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_CONTROL); + out_uint16_le(s, RDP_CAPLEN_CONTROL); + + out_uint16(s, 0); /* Control capabilities */ + out_uint16(s, 0); /* Remote detach */ + out_uint16_le(s, 2); /* Control interest */ + out_uint16_le(s, 2); /* Detach interest */ +} + +/* Output activation capability set */ +static void +rdp_out_activate_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_ACTIVATE); + out_uint16_le(s, RDP_CAPLEN_ACTIVATE); + + out_uint16(s, 0); /* Help key */ + out_uint16(s, 0); /* Help index key */ + out_uint16(s, 0); /* Extended help key */ + out_uint16(s, 0); /* Window activate */ +} + +/* Output pointer capability set */ +static void +rdp_out_pointer_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_POINTER); + out_uint16_le(s, RDP_CAPLEN_POINTER); + + out_uint16(s, 0); /* Colour pointer */ + out_uint16_le(s, 20); /* Cache size */ +} + +/* Output share capability set */ +static void +rdp_out_share_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_SHARE); + out_uint16_le(s, RDP_CAPLEN_SHARE); + + out_uint16(s, 0); /* userid */ + out_uint16(s, 0); /* pad */ +} + +/* Output colour cache capability set */ +static void +rdp_out_colcache_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_COLCACHE); + out_uint16_le(s, RDP_CAPLEN_COLCACHE); + + out_uint16_le(s, 6); /* cache size */ + out_uint16(s, 0); /* pad */ +} + +static uint8 canned_caps[] = { + 0x01, 0x00, 0x00, 0x00, 0x09, 0x04, 0x00, 0x00, 0x04, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x0C, 0x00, 0x08, 0x00, 0x01, + 0x00, 0x00, 0x00, 0x0E, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00, + 0x10, 0x00, 0x34, 0x00, 0xFE, + 0x00, 0x04, 0x00, 0xFE, 0x00, 0x04, 0x00, 0xFE, 0x00, 0x08, 0x00, + 0xFE, 0x00, 0x08, 0x00, 0xFE, + 0x00, 0x10, 0x00, 0xFE, 0x00, 0x20, 0x00, 0xFE, 0x00, 0x40, 0x00, + 0xFE, 0x00, 0x80, 0x00, 0xFE, + 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x01, + 0x02, 0x00, 0x00, 0x00 +}; + +/* Output unknown capability set */ +static void +rdp_out_unknown_caps(STREAM s) +{ + out_uint16_le(s, RDP_CAPSET_UNKNOWN); + out_uint16_le(s, 0x58); + + out_uint8p(s, canned_caps, RDP_CAPLEN_UNKNOWN - 4); +} + +/* Send a confirm active PDU */ +static void +rdp_send_confirm_active(void) +{ + STREAM s; + uint16 caplen = + RDP_CAPLEN_GENERAL + RDP_CAPLEN_BITMAP + RDP_CAPLEN_ORDER + + RDP_CAPLEN_BMPCACHE + RDP_CAPLEN_COLCACHE + + RDP_CAPLEN_ACTIVATE + RDP_CAPLEN_CONTROL + + RDP_CAPLEN_POINTER + RDP_CAPLEN_SHARE + RDP_CAPLEN_UNKNOWN + 4 /* w2k fix, why? */ ; + + s = rdp_init(14 + caplen + sizeof(RDP_SOURCE)); + + out_uint32_le(s, rdp_shareid); + out_uint16_le(s, 0x3ea); /* userid */ + out_uint16_le(s, sizeof(RDP_SOURCE)); + out_uint16_le(s, caplen); + + out_uint8p(s, RDP_SOURCE, sizeof(RDP_SOURCE)); + out_uint16_le(s, 0xd); /* num_caps */ + out_uint8s(s, 2); /* pad */ + + rdp_out_general_caps(s); + rdp_out_bitmap_caps(s); + rdp_out_order_caps(s); + rdp_out_bmpcache_caps(s); + rdp_out_colcache_caps(s); + rdp_out_activate_caps(s); + rdp_out_control_caps(s); + rdp_out_pointer_caps(s); + rdp_out_share_caps(s); + rdp_out_unknown_caps(s); + + s_mark_end(s); + rdp_send(s, RDP_PDU_CONFIRM_ACTIVE); +} + +/* Respond to a demand active PDU */ +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, 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); + Bpp = (bpp + 7) / 8; + 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 = (uint8*)xmalloc(width * height * Bpp); + for (y = 0; y < height; y++) + { + in_uint8a(s, &bmpdata[(height - y - 1) * (width * Bpp)], + width * Bpp); + } + 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 = (uint8*)xmalloc(width * height * Bpp); + if (bitmap_decompress(bmpdata, width, height, data, size, Bpp)) + { + ui_paint_bitmap(left, top, cx, cy, width, height, bmpdata); + } + xfree(bmpdata); + } +} + +/* Process a palette update */ +static void +process_palette(STREAM s) +{ + COLOURENTRY *entry; + COLOURMAP map; + HCOLOURMAP hmap; + int i; + uint8 data[1536]; + + in_uint8s(s, 2); /* pad */ + in_uint16_le(s, map.ncolours); + in_uint8s(s, 2); /* pad */ + + map.colours = (COLOURENTRY*)data; + + for (i = 0; i < map.ncolours; i++) + { + entry = &map.colours[i]; + in_uint8(s, entry->red); + in_uint8(s, entry->green); + in_uint8(s, entry->blue); + } + 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); + ui_begin_update(); + 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); + } + ui_end_update(); +} + +/* Process data PDU */ +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 */ +BOOL +rdp_main_loop(void) +{ + uint8 type; + STREAM s; + BOOL cont = True; + while (cont) + { + s = rdp_recv(&type); + if (s == NULL) + return False; + 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; + case 0: + break; + default: + unimpl("PDU %d\n", type); + } + cont = next_packet < s->end; + } + return True; +} + +/* 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(void) +{ + sec_disconnect(); +} |