/[rdesktop]/sourceforge.net/trunk/rdesktop/tcp.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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Diff of /sourceforge.net/trunk/rdesktop/tcp.c

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revision 546 by astrand, Sat Nov 8 09:17:41 2003 UTC revision 1328 by stargo, Fri Nov 3 23:51:35 2006 UTC
# Line 1  Line 1 
1  /*  /* -*- c-basic-offset: 8 -*-
2     rdesktop: A Remote Desktop Protocol client.     rdesktop: A Remote Desktop Protocol client.
3     Protocol services - TCP layer     Protocol services - TCP layer
4     Copyright (C) Matthew Chapman 1999-2002     Copyright (C) Matthew Chapman 1999-2005
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 34  Line 34 
34    
35  static int sock;  static int sock;
36  static struct stream in;  static struct stream in;
37    #ifndef WITH_SCARD
38  static struct stream out;  static struct stream out;
39  extern int tcp_port_rdp;  #endif
40    int g_tcp_port_rdp = TCP_PORT_RDP;
41    
42  /* Initialise TCP transport data packet */  /* Initialise TCP transport data packet */
43  STREAM  STREAM
44  tcp_init(uint32 maxlen)  tcp_init(uint32 maxlen)
45  {  {
46          if (maxlen > out.size)          STREAM result = NULL;
47    
48    #ifdef WITH_SCARD
49            scard_lock(SCARD_LOCK_TCP);
50            result = scard_tcp_init();
51    #else
52            result = &out;
53    #endif
54    
55            if (maxlen > result->size)
56          {          {
57                  out.data = (uint8 *) xrealloc(out.data, maxlen);                  result->data = (uint8 *) xrealloc(result->data, maxlen);
58                  out.size = maxlen;                  result->size = maxlen;
59          }          }
60    
61          out.p = out.data;          result->p = result->data;
62          out.end = out.data + out.size;          result->end = result->data + result->size;
63          return &out;  #ifdef WITH_SCARD
64            scard_unlock(SCARD_LOCK_TCP);
65    #endif
66            return result;
67  }  }
68    
69  /* Send TCP transport data packet */  /* Send TCP transport data packet */
# Line 59  tcp_send(STREAM s) Line 73  tcp_send(STREAM s)
73          int length = s->end - s->data;          int length = s->end - s->data;
74          int sent, total = 0;          int sent, total = 0;
75    
76    #ifdef WITH_SCARD
77            scard_lock(SCARD_LOCK_TCP);
78    #endif
79          while (total < length)          while (total < length)
80          {          {
81                  sent = send(sock, s->data + total, length - total, 0);                  sent = send(sock, s->data + total, length - total, 0);
# Line 70  tcp_send(STREAM s) Line 87  tcp_send(STREAM s)
87    
88                  total += sent;                  total += sent;
89          }          }
90    #ifdef WITH_SCARD
91            scard_unlock(SCARD_LOCK_TCP);
92    #endif
93  }  }
94    
95  /* Receive a message on the TCP layer */  /* Receive a message on the TCP layer */
# Line 142  tcp_connect(char *server) Line 162  tcp_connect(char *server)
162          struct addrinfo hints, *res, *ressave;          struct addrinfo hints, *res, *ressave;
163          char tcp_port_rdp_s[10];          char tcp_port_rdp_s[10];
164    
165          snprintf(tcp_port_rdp_s, 10, "%d", tcp_port_rdp);          snprintf(tcp_port_rdp_s, 10, "%d", g_tcp_port_rdp);
166    
167          memset(&hints, 0, sizeof(struct addrinfo));          memset(&hints, 0, sizeof(struct addrinfo));
168          hints.ai_family = AF_UNSPEC;          hints.ai_family = AF_UNSPEC;
169          hints.ai_socktype = SOCK_STREAM;          hints.ai_socktype = SOCK_STREAM;
170    
171          n = getaddrinfo(server, tcp_port_rdp_s, &hints, &res);          if ((n = getaddrinfo(server, tcp_port_rdp_s, &hints, &res)))
   
         if (n < 0)  
172          {          {
173                  error("getaddrinfo: %s\n", gai_strerror(n));                  error("getaddrinfo: %s\n", gai_strerror(n));
174                  return False;                  return False;
# Line 200  tcp_connect(char *server) Line 218  tcp_connect(char *server)
218          }          }
219    
220          servaddr.sin_family = AF_INET;          servaddr.sin_family = AF_INET;
221          servaddr.sin_port = htons(tcp_port_rdp);          servaddr.sin_port = htons(g_tcp_port_rdp);
222    
223          if (connect(sock, (struct sockaddr *) &servaddr, sizeof(struct sockaddr)) < 0)          if (connect(sock, (struct sockaddr *) &servaddr, sizeof(struct sockaddr)) < 0)
224          {          {
# Line 216  tcp_connect(char *server) Line 234  tcp_connect(char *server)
234          in.size = 4096;          in.size = 4096;
235          in.data = (uint8 *) xmalloc(in.size);          in.data = (uint8 *) xmalloc(in.size);
236    
237    #ifdef WITH_SCARD
238            scard_tcp_connect();
239    #else
240          out.size = 4096;          out.size = 4096;
241          out.data = (uint8 *) xmalloc(out.size);          out.data = (uint8 *) xmalloc(out.size);
242    #endif
243    
244          return True;          return True;
245  }  }
# Line 228  tcp_disconnect(void) Line 250  tcp_disconnect(void)
250  {  {
251          close(sock);          close(sock);
252  }  }
253    
254    char *
255    tcp_get_address()
256    {
257            static char ipaddr[32];
258            struct sockaddr_in sockaddr;
259            socklen_t len = sizeof(sockaddr);
260            if (getsockname(sock, (struct sockaddr *) &sockaddr, &len) == 0)
261            {
262                    unsigned char *ip = (unsigned char *) &sockaddr.sin_addr;
263                    sprintf(ipaddr, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
264            }
265            else
266                    strcpy(ipaddr, "127.0.0.1");
267            return ipaddr;
268    }
269    
270    /* reset the state of the tcp layer */
271    /* Support for Session Directory */
272    void
273    tcp_reset_state(void)
274    {
275            sock = -1;              /* reset socket */
276    
277            /* Clear the incoming stream */
278            if (in.data != NULL)
279                    xfree(in.data);
280            in.p = NULL;
281            in.end = NULL;
282            in.data = NULL;
283            in.size = 0;
284            in.iso_hdr = NULL;
285            in.mcs_hdr = NULL;
286            in.sec_hdr = NULL;
287            in.rdp_hdr = NULL;
288            in.channel_hdr = NULL;
289    
290            /* Clear the outgoing stream(s) */
291    #ifdef WITH_SCARD
292            scard_tcp_reset_state();
293    #else
294            if (out.data != NULL)
295                    xfree(out.data);
296            out.p = NULL;
297            out.end = NULL;
298            out.data = NULL;
299            out.size = 0;
300            out.iso_hdr = NULL;
301            out.mcs_hdr = NULL;
302            out.sec_hdr = NULL;
303            out.rdp_hdr = NULL;
304            out.channel_hdr = NULL;
305    #endif
306    }
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