/[rdesktop]/sourceforge.net/trunk/rdesktop/rdp.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 432 by matthewc, Tue Jul 1 09:31:25 2003 UTC revision 438 by jsorg71, Fri Aug 1 17:01:58 2003 UTC
# Line 2  Line 2 
2     rdesktop: A Remote Desktop Protocol client.     rdesktop: A Remote Desktop Protocol client.
3     Protocol services - RDP layer     Protocol services - RDP layer
4     Copyright (C) Matthew Chapman 1999-2002     Copyright (C) Matthew Chapman 1999-2002
5      
6     This program is free software; you can redistribute it and/or modify     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     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     the Free Software Foundation; either version 2 of the License, or
9     (at your option) any later version.     (at your option) any later version.
10      
11     This program is distributed in the hope that it will be useful,     This program is distributed in the hope that it will be useful,
12     but WITHOUT ANY WARRANTY; without even the implied warranty of     but WITHOUT ANY WARRANTY; without even the implied warranty of
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14     GNU General Public License for more details.     GNU General Public License for more details.
15      
16     You should have received a copy of the GNU General Public License     You should have received a copy of the GNU General Public License
17     along with this program; if not, write to the Free Software     along with this program; if not, write to the Free Software
18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# Line 21  Line 21 
21  #include "rdesktop.h"  #include "rdesktop.h"
22    
23  extern uint16 g_mcs_userid;  extern uint16 g_mcs_userid;
24  extern char username[16];  extern char g_username[16];
25  extern BOOL bitmap_compression;  extern BOOL g_bitmap_compression;
26  extern BOOL orders;  extern BOOL g_orders;
27  extern BOOL encryption;  extern BOOL g_encryption;
28  extern BOOL desktop_save;  extern BOOL g_desktop_save;
29  extern BOOL use_rdp5;  extern BOOL g_use_rdp5;
30  extern uint16 server_rdp_version;  extern uint16 g_server_rdp_version;
31    extern int g_server_bpp;
32    
33  uint8 *next_packet;  uint8 *g_next_packet;
34  uint32 rdp_shareid;  uint32 g_rdp_shareid;
35    
36  #if WITH_DEBUG  #if WITH_DEBUG
37  static uint32 packetno;  static uint32 g_packetno;
38  #endif  #endif
39    
40  /* Receive an RDP packet */  /* Receive an RDP packet */
# Line 43  rdp_recv(uint8 * type) Line 44  rdp_recv(uint8 * type)
44          static STREAM rdp_s;          static STREAM rdp_s;
45          uint16 length, pdu_type;          uint16 length, pdu_type;
46    
47          if ((rdp_s == NULL) || (next_packet >= rdp_s->end))          if ((rdp_s == NULL) || (g_next_packet >= rdp_s->end))
48          {          {
49                  rdp_s = sec_recv();                  rdp_s = sec_recv();
50                  if (rdp_s == NULL)                  if (rdp_s == NULL)
51                          return NULL;                          return NULL;
52    
53                  next_packet = rdp_s->p;                  g_next_packet = rdp_s->p;
54          }          }
55          else          else
56          {          {
57                  rdp_s->p = next_packet;                  rdp_s->p = g_next_packet;
58          }          }
59    
60          in_uint16_le(rdp_s, length);          in_uint16_le(rdp_s, length);
61          /* 32k packets are really 8, keepalive fix */          /* 32k packets are really 8, keepalive fix */
62          if (length == 0x8000)          if (length == 0x8000)
63          {          {
64                  next_packet += 8;                  g_next_packet += 8;
65                  *type = 0;                  *type = 0;
66                  return rdp_s;                  return rdp_s;
67          }          }
# Line 69  rdp_recv(uint8 * type) Line 70  rdp_recv(uint8 * type)
70          *type = pdu_type & 0xf;          *type = pdu_type & 0xf;
71    
72  #if WITH_DEBUG  #if WITH_DEBUG
73          DEBUG(("RDP packet #%d, (type %x)\n", ++packetno, *type));          DEBUG(("RDP packet #%d, (type %x)\n", ++g_packetno, *type));
74          //      hexdump(next_packet, length);          //      hexdump(g_next_packet, length);
75  #endif /*  */  #endif /*  */
76    
77          next_packet += length;          g_next_packet += length;
78          return rdp_s;          return rdp_s;
79  }  }
80    
# Line 83  rdp_init_data(int maxlen) Line 84  rdp_init_data(int maxlen)
84  {  {
85          STREAM s;          STREAM s;
86    
87          s = sec_init(encryption ? SEC_ENCRYPT : 0, maxlen + 18);          s = sec_init(g_encryption ? SEC_ENCRYPT : 0, maxlen + 18);
88          s_push_layer(s, rdp_hdr, 18);          s_push_layer(s, rdp_hdr, 18);
89    
90          return s;          return s;
# Line 102  rdp_send_data(STREAM s, uint8 data_pdu_t Line 103  rdp_send_data(STREAM s, uint8 data_pdu_t
103          out_uint16_le(s, (RDP_PDU_DATA | 0x10));          out_uint16_le(s, (RDP_PDU_DATA | 0x10));
104          out_uint16_le(s, (g_mcs_userid + 1001));          out_uint16_le(s, (g_mcs_userid + 1001));
105    
106          out_uint32_le(s, rdp_shareid);          out_uint32_le(s, g_rdp_shareid);
107          out_uint8(s, 0);        /* pad */          out_uint8(s, 0);        /* pad */
108          out_uint8(s, 1);        /* streamid */          out_uint8(s, 1);        /* streamid */
109          out_uint16_le(s, (length - 14));          out_uint16_le(s, (length - 14));
# Line 110  rdp_send_data(STREAM s, uint8 data_pdu_t Line 111  rdp_send_data(STREAM s, uint8 data_pdu_t
111          out_uint8(s, 0);        /* compress_type */          out_uint8(s, 0);        /* compress_type */
112          out_uint16(s, 0);       /* compress_len */          out_uint16(s, 0);       /* compress_len */
113    
114          sec_send(s, encryption ? SEC_ENCRYPT : 0);          sec_send(s, g_encryption ? SEC_ENCRYPT : 0);
115  }  }
116    
117  /* Output a string in Unicode */  /* Output a string in Unicode */
# Line 143  rdp_send_logon_info(uint32 flags, char * Line 144  rdp_send_logon_info(uint32 flags, char *
144          int len_ip = 2 * strlen("127.0.0.1");          int len_ip = 2 * strlen("127.0.0.1");
145          int len_dll = 2 * strlen("C:\\WINNT\\System32\\mstscax.dll");          int len_dll = 2 * strlen("C:\\WINNT\\System32\\mstscax.dll");
146          int packetlen = 0;          int packetlen = 0;
147          uint32 sec_flags = encryption ? (SEC_LOGON_INFO | SEC_ENCRYPT) : SEC_LOGON_INFO;          uint32 sec_flags = g_encryption ? (SEC_LOGON_INFO | SEC_ENCRYPT) : SEC_LOGON_INFO;
148          STREAM s;          STREAM s;
149    
150          if (!use_rdp5 || 1 == server_rdp_version)          if (!g_use_rdp5 || 1 == g_server_rdp_version)
151          {          {
152                  DEBUG_RDP5(("Sending RDP4-style Logon packet\n"));                  DEBUG_RDP5(("Sending RDP4-style Logon packet\n"));
153    
# Line 178  rdp_send_logon_info(uint32 flags, char * Line 179  rdp_send_logon_info(uint32 flags, char *
179                          (flags & RDP_LOGON_BLOB ? 2 : 0) +      // Length of BLOB                          (flags & RDP_LOGON_BLOB ? 2 : 0) +      // Length of BLOB
180                          2 +     // len_program                          2 +     // len_program
181                          2 +     // len_directory                          2 +     // len_directory
182                          (0 < len_domain ? len_domain : 2) +     // domain                          (0 < len_domain ? len_domain : 2) +     // domain
183                          len_user + (flags & RDP_LOGON_AUTO ? len_password : 0) + 0 +    // We have no 512 byte BLOB. Perhaps we must?                          len_user + (flags & RDP_LOGON_AUTO ? len_password : 0) + 0 +    // We have no 512 byte BLOB. Perhaps we must?
184                          (flags & RDP_LOGON_BLOB && !(flags & RDP_LOGON_AUTO) ? 2 : 0) + // After the BLOB is a unknown int16. If there is a BLOB, that is.                          (flags & RDP_LOGON_BLOB && !(flags & RDP_LOGON_AUTO) ? 2 : 0) + // After the BLOB is a unknown int16. If there is a BLOB, that is.
185                          (0 < len_program ? len_program : 2) + (0 < len_directory ? len_directory : 2) + 2 +     // Unknown (2)                          (0 < len_program ? len_program : 2) + (0 < len_directory ? len_directory : 2) + 2 +     // Unknown (2)
# Line 357  rdp_out_general_caps(STREAM s) Line 358  rdp_out_general_caps(STREAM s)
358          out_uint16_le(s, 0x200);        /* Protocol version */          out_uint16_le(s, 0x200);        /* Protocol version */
359          out_uint16(s, 0);       /* Pad */          out_uint16(s, 0);       /* Pad */
360          out_uint16(s, 0);       /* Compression types */          out_uint16(s, 0);       /* Compression types */
361          out_uint16_le(s, use_rdp5 ? 0x40d : 0);          out_uint16_le(s, g_use_rdp5 ? 0x40d : 0);
362          /* Pad, according to T.128. 0x40d seems to          /* Pad, according to T.128. 0x40d seems to
363             trigger             trigger
364             the server to start sending RDP5 packets.             the server to start sending RDP5 packets.
# Line 386  rdp_out_bitmap_caps(STREAM s) Line 387  rdp_out_bitmap_caps(STREAM s)
387          out_uint16_le(s, 600);  /* Desktop height */          out_uint16_le(s, 600);  /* Desktop height */
388          out_uint16(s, 0);       /* Pad */          out_uint16(s, 0);       /* Pad */
389          out_uint16(s, 0);       /* Allow resize */          out_uint16(s, 0);       /* Allow resize */
390          out_uint16_le(s, bitmap_compression ? 1 : 0);   /* Support compression */          out_uint16_le(s, g_bitmap_compression ? 1 : 0); /* Support compression */
391          out_uint16(s, 0);       /* Unknown */          out_uint16(s, 0);       /* Unknown */
392          out_uint16_le(s, 1);    /* Unknown */          out_uint16_le(s, 1);    /* Unknown */
393          out_uint16(s, 0);       /* Pad */          out_uint16(s, 0);       /* Pad */
# Line 407  rdp_out_order_caps(STREAM s) Line 408  rdp_out_order_caps(STREAM s)
408          order_caps[8] = 1;      /* line */          order_caps[8] = 1;      /* line */
409          order_caps[9] = 1;      /* line */          order_caps[9] = 1;      /* line */
410          order_caps[10] = 1;     /* rect */          order_caps[10] = 1;     /* rect */
411          order_caps[11] = (desktop_save == False ? 0 : 1);       /* desksave */          order_caps[11] = (g_desktop_save == False ? 0 : 1);     /* desksave */
412          order_caps[13] = 1;     /* memblt */          order_caps[13] = 1;     /* memblt */
413          order_caps[14] = 1;     /* triblt */          order_caps[14] = 1;     /* triblt */
414          order_caps[22] = 1;     /* polyline */          order_caps[22] = 1;     /* polyline */
# Line 425  rdp_out_order_caps(STREAM s) Line 426  rdp_out_order_caps(STREAM s)
426          out_uint8p(s, order_caps, 32);  /* Orders supported */          out_uint8p(s, order_caps, 32);  /* Orders supported */
427          out_uint16_le(s, 0x6a1);        /* Text capability flags */          out_uint16_le(s, 0x6a1);        /* Text capability flags */
428          out_uint8s(s, 6);       /* Pad */          out_uint8s(s, 6);       /* Pad */
429          out_uint32_le(s, desktop_save == False ? 0 : 0x38400);  /* Desktop cache size */          out_uint32_le(s, g_desktop_save == False ? 0 : 0x38400);        /* Desktop cache size */
430          out_uint32(s, 0);       /* Unknown */          out_uint32(s, 0);       /* Unknown */
431          out_uint32_le(s, 0x4e4);        /* Unknown */          out_uint32_le(s, 0x4e4);        /* Unknown */
432  }  }
# Line 434  rdp_out_order_caps(STREAM s) Line 435  rdp_out_order_caps(STREAM s)
435  static void  static void
436  rdp_out_bmpcache_caps(STREAM s)  rdp_out_bmpcache_caps(STREAM s)
437  {  {
438            int Bpp;
439          out_uint16_le(s, RDP_CAPSET_BMPCACHE);          out_uint16_le(s, RDP_CAPSET_BMPCACHE);
440          out_uint16_le(s, RDP_CAPLEN_BMPCACHE);          out_uint16_le(s, RDP_CAPLEN_BMPCACHE);
441    
442            Bpp = (g_server_bpp + 7) / 8;
443          out_uint8s(s, 24);      /* unused */          out_uint8s(s, 24);      /* unused */
444          out_uint16_le(s, 0x258);        /* entries */          out_uint16_le(s, 0x258);        /* entries */
445          out_uint16_le(s, 0x100);        /* max cell size */          out_uint16_le(s, 0x100 * Bpp);  /* max cell size */
446          out_uint16_le(s, 0x12c);        /* entries */          out_uint16_le(s, 0x12c);        /* entries */
447          out_uint16_le(s, 0x400);        /* max cell size */          out_uint16_le(s, 0x400 * Bpp);  /* max cell size */
448          out_uint16_le(s, 0x106);        /* entries */          out_uint16_le(s, 0x106);        /* entries */
449          out_uint16_le(s, 0x1000);       /* max cell size */          out_uint16_le(s, 0x1000 * Bpp); /* max cell size */
450  }  }
451    
452  /* Output control capability set */  /* Output control capability set */
# Line 543  static void Line 546  static void
546  rdp_send_confirm_active(void)  rdp_send_confirm_active(void)
547  {  {
548          STREAM s;          STREAM s;
549          uint32 sec_flags = encryption ? (RDP5_FLAG | SEC_ENCRYPT) : RDP5_FLAG;          uint32 sec_flags = g_encryption ? (RDP5_FLAG | SEC_ENCRYPT) : RDP5_FLAG;
550          uint16 caplen =          uint16 caplen =
551                  RDP_CAPLEN_GENERAL + RDP_CAPLEN_BITMAP + RDP_CAPLEN_ORDER +                  RDP_CAPLEN_GENERAL + RDP_CAPLEN_BITMAP + RDP_CAPLEN_ORDER +
552                  RDP_CAPLEN_BMPCACHE + RDP_CAPLEN_COLCACHE +                  RDP_CAPLEN_BMPCACHE + RDP_CAPLEN_COLCACHE +
# Line 556  rdp_send_confirm_active(void) Line 559  rdp_send_confirm_active(void)
559          out_uint16_le(s, (RDP_PDU_CONFIRM_ACTIVE | 0x10));      /* Version 1 */          out_uint16_le(s, (RDP_PDU_CONFIRM_ACTIVE | 0x10));      /* Version 1 */
560          out_uint16_le(s, (g_mcs_userid + 1001));          out_uint16_le(s, (g_mcs_userid + 1001));
561    
562          out_uint32_le(s, rdp_shareid);          out_uint32_le(s, g_rdp_shareid);
563          out_uint16_le(s, 0x3ea);        /* userid */          out_uint16_le(s, 0x3ea);        /* userid */
564          out_uint16_le(s, sizeof(RDP_SOURCE));          out_uint16_le(s, sizeof(RDP_SOURCE));
565          out_uint16_le(s, caplen);          out_uint16_le(s, caplen);
# Line 586  process_demand_active(STREAM s) Line 589  process_demand_active(STREAM s)
589  {  {
590          uint8 type;          uint8 type;
591    
592          in_uint32_le(s, rdp_shareid);          in_uint32_le(s, g_rdp_shareid);
593    
594          DEBUG(("DEMAND_ACTIVE(id=0x%x)\n", rdp_shareid));          DEBUG(("DEMAND_ACTIVE(id=0x%x)\n", g_rdp_shareid));
595    
596          rdp_send_confirm_active();          rdp_send_confirm_active();
597          rdp_send_synchronise();          rdp_send_synchronise();
# Line 762  process_palette(STREAM s) Line 765  process_palette(STREAM s)
765          in_uint16_le(s, map.ncolours);          in_uint16_le(s, map.ncolours);
766          in_uint8s(s, 2);        /* pad */          in_uint8s(s, 2);        /* pad */
767    
768          map.colours = (COLOURENTRY *) xmalloc(3 * map.ncolours);          map.colours = (COLOURENTRY *) xmalloc(sizeof(COLOURENTRY) * map.ncolours);
769    
770          DEBUG(("PALETTE(c=%d)\n", map.ncolours));          DEBUG(("PALETTE(c=%d)\n", map.ncolours));
771    
# Line 886  rdp_main_loop(void) Line 889  rdp_main_loop(void)
889          }          }
890          return True;          return True;
891          /* We want to detect if we got a clean shutdown, but we          /* We want to detect if we got a clean shutdown, but we
892          can't. Se above.               can't. Se above.  
893          return False;  */             return False;  */
894  }  }
895    
896  /* Establish a connection up to the RDP layer */  /* Establish a connection up to the RDP layer */
# Line 895  BOOL Line 898  BOOL
898  rdp_connect(char *server, uint32 flags, char *domain, char *password,  rdp_connect(char *server, uint32 flags, char *domain, char *password,
899              char *command, char *directory)              char *command, char *directory)
900  {  {
901          if (!sec_connect(server, username))          if (!sec_connect(server, g_username))
902                  return False;                  return False;
903    
904          rdp_send_logon_info(flags, domain, username, password, command, directory);          rdp_send_logon_info(flags, domain, g_username, password, command, directory);
905          return True;          return True;
906  }  }
907    
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