/[rdesktop]/sourceforge.net/trunk/rdesktop/iso.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 24 by matty, Sat Jan 6 03:12:10 2001 UTC revision 64 by astrand, Thu Jul 18 16:38:31 2002 UTC
# Line 1  Line 1 
1  /*  /*
2     rdesktop: A Remote Desktop Protocol client.     rdesktop: A Remote Desktop Protocol client.
3     Protocol services - ISO layer     Protocol services - ISO layer
4     Copyright (C) Matthew Chapman 1999-2000     Copyright (C) Matthew Chapman 1999-2001
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
# Line 21  Line 21 
21  #include "rdesktop.h"  #include "rdesktop.h"
22    
23  /* Send a self-contained ISO PDU */  /* Send a self-contained ISO PDU */
24  static void iso_send_msg(uint8 code)  static void
25    iso_send_msg(uint8 code)
26  {  {
27          STREAM s;          STREAM s;
28    
# Line 42  static void iso_send_msg(uint8 code) Line 43  static void iso_send_msg(uint8 code)
43  }  }
44    
45  /* Receive a message on the ISO layer, return code */  /* Receive a message on the ISO layer, return code */
46  static STREAM iso_recv_msg(uint8 *code)  static STREAM
47    iso_recv_msg(uint8 * code)
48  {  {
49          STREAM s;          STREAM s;
50          uint16 length;          uint16 length;
# Line 50  static STREAM iso_recv_msg(uint8 *code) Line 52  static STREAM iso_recv_msg(uint8 *code)
52    
53          s = tcp_recv(4);          s = tcp_recv(4);
54          if (s == NULL)          if (s == NULL)
55                  return False;                  return NULL;
56    
57          in_uint8(s, version);          in_uint8(s, version);
58          if (version != 3)          if (version != 3)
59          {          {
60                  ERROR("TPKT v%d\n", version);                  error("TPKT v%d\n", version);
61                  return False;                  return NULL;
62          }          }
63    
64          in_uint8s(s, 1);        /* pad */          in_uint8s(s, 1);        /* pad */
# Line 64  static STREAM iso_recv_msg(uint8 *code) Line 66  static STREAM iso_recv_msg(uint8 *code)
66    
67          s = tcp_recv(length - 4);          s = tcp_recv(length - 4);
68          if (s == NULL)          if (s == NULL)
69                  return False;                  return NULL;
70    
71          in_uint8s(s, 1);        /* hdrlen */          in_uint8s(s, 1);        /* hdrlen */
72          in_uint8(s, *code);          in_uint8(s, *code);
# Line 80  static STREAM iso_recv_msg(uint8 *code) Line 82  static STREAM iso_recv_msg(uint8 *code)
82  }  }
83    
84  /* Initialise ISO transport data packet */  /* Initialise ISO transport data packet */
85  STREAM iso_init(int length)  STREAM
86    iso_init(int length)
87  {  {
88          STREAM s;          STREAM s;
89    
# Line 91  STREAM iso_init(int length) Line 94  STREAM iso_init(int length)
94  }  }
95    
96  /* Send an ISO data PDU */  /* Send an ISO data PDU */
97  void iso_send(STREAM s)  void
98    iso_send(STREAM s)
99  {  {
100          uint16 length;          uint16 length;
101    
# Line 110  void iso_send(STREAM s) Line 114  void iso_send(STREAM s)
114  }  }
115    
116  /* Receive ISO transport data packet */  /* Receive ISO transport data packet */
117  STREAM iso_recv()  STREAM
118    iso_recv()
119  {  {
120          STREAM s;          STREAM s;
121          uint8 code;          uint8 code;
122    
123          s = iso_recv_msg(&code);          s = iso_recv_msg(&code);
124          if ((s == NULL) || (code != ISO_PDU_DT))          if (s == NULL)
125                    return NULL;
126    
127            if (code != ISO_PDU_DT)
128          {          {
129                  ERROR("expected DT, got %d\n", code);                  error("expected DT, got 0x%x\n", code);
130                  return False;                  return NULL;
131          }          }
132    
133          return s;          return s;
134  }  }
135    
136  /* Establish a connection up to the ISO layer */  /* Establish a connection up to the ISO layer */
137  BOOL iso_connect(char *server)  BOOL
138    iso_connect(char *server)
139  {  {
140          uint8 code;          uint8 code;
141    
# Line 135  BOOL iso_connect(char *server) Line 144  BOOL iso_connect(char *server)
144    
145          iso_send_msg(ISO_PDU_CR);          iso_send_msg(ISO_PDU_CR);
146    
147          if ((iso_recv_msg(&code) == NULL) || (code != ISO_PDU_CC))          if (iso_recv_msg(&code) == NULL)
148                    return False;
149    
150            if (code != ISO_PDU_CC)
151          {          {
152                  ERROR("expected CC, got %d\n", code);                  error("expected CC, got 0x%x\n", code);
153                  tcp_disconnect();                  tcp_disconnect();
154                  return False;                  return False;
155          }          }
# Line 146  BOOL iso_connect(char *server) Line 158  BOOL iso_connect(char *server)
158  }  }
159    
160  /* Disconnect from the ISO layer */  /* Disconnect from the ISO layer */
161  void iso_disconnect()  void
162    iso_disconnect()
163  {  {
164          iso_send_msg(ISO_PDU_DR);          iso_send_msg(ISO_PDU_DR);
165          tcp_disconnect();          tcp_disconnect();
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