ReactOS 0.4.15-dev-8417-gb6b82fe
tcp.c File Reference
#include "rdesktop.h"
#include <winsock2.h>
Include dependency graph for tcp.c:

Go to the source code of this file.

Macros

#define INADDR_NONE   ((unsigned long) -1)
 

Typedefs

typedef int socklen_t
 

Functions

STREAM tcp_init (RDPCLIENT *This, uint32 maxlen)
 
BOOL tcp_send (RDPCLIENT *This, STREAM s)
 
STREAM tcp_recv (RDPCLIENT *This, STREAM s, uint32 length)
 
BOOL tcp_connect (RDPCLIENT *This, char *server)
 
BOOL tcp_disconnect (RDPCLIENT *This)
 
wchar_ttcp_get_address (RDPCLIENT *This)
 
void tcp_reset_state (RDPCLIENT *This)
 

Macro Definition Documentation

◆ INADDR_NONE

#define INADDR_NONE   ((unsigned long) -1)

Definition at line 38 of file tcp.c.

Typedef Documentation

◆ socklen_t

typedef int socklen_t

Definition at line 35 of file tcp.c.

Function Documentation

◆ tcp_connect()

BOOL tcp_connect ( RDPCLIENT This,
char server 
)

Definition at line 205 of file tcp.c.

206{
207 int true_value = 1;
208
209#ifdef IPv6
210
211 int n;
212 struct addrinfo hints, *res, *ressave;
213 char tcp_port_rdp_s[10];
214
215 snprintf(tcp_port_rdp_s, 10, "%d", This->tcp_port_rdp);
216
217 memset(&hints, 0, sizeof(struct addrinfo));
218 hints.ai_family = AF_UNSPEC;
219 hints.ai_socktype = SOCK_STREAM;
220
221 if ((n = getaddrinfo(server, tcp_port_rdp_s, &hints, &res)))
222 {
223 error("getaddrinfo: %s\n", gai_strerror(n));
224 return False;
225 }
226
227 ressave = res;
228 This->tcp.sock = -1;
229 while (res)
230 {
231 This->tcp.sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
232 if (!(This->tcp.sock < 0))
233 {
234 if (connect(This->tcp.sock, res->ai_addr, res->ai_addrlen) == 0)
235 break;
236 close(This->tcp.sock);
237 This->tcp.sock = -1;
238 }
239 res = res->ai_next;
240 }
241 freeaddrinfo(ressave);
242
243 if (This->tcp.sock == -1)
244 {
245 error("%s: unable to connect\n", server);
246 return False;
247 }
248
249#else /* no IPv6 support */
250
251 struct hostent *nslookup;
252 struct sockaddr_in servaddr;
253
254 if ((nslookup = gethostbyname(server)) != NULL)
255 {
256 memcpy(&servaddr.sin_addr, nslookup->h_addr, sizeof(servaddr.sin_addr));
257 }
258 else if ((servaddr.sin_addr.s_addr = inet_addr(server)) == INADDR_NONE)
259 {
260 error("%s: unable to resolve host\n", server);
261 This->disconnect_reason = 260;
262 return False;
263 }
264
265 if ((This->tcp.sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
266 {
267 // error("socket: %s\n", strerror(errno)); // EOF
268 return False;
269 }
270
271 servaddr.sin_family = AF_INET;
272 servaddr.sin_port = htons(This->tcp_port_rdp);
273
274 // TODO: apply connection timeout here
275
276 if (connect(This->tcp.sock, (struct sockaddr *) &servaddr, sizeof(struct sockaddr)) < 0)
277 {
278 // error("connect: %s\n", strerror(errno)); // EOF
279 This->disconnect_reason = 516;
280 closesocket(This->tcp.sock);
281 return False;
282 }
283
284#endif /* IPv6 */
285
286 setsockopt(This->tcp.sock, IPPROTO_TCP, TCP_NODELAY, (void *) &true_value, sizeof(true_value));
287
288 This->tcp.in.size = 4096;
289 This->tcp.in.data = (uint8 *) malloc(This->tcp.in.size);
290
291 if(This->tcp.in.data == NULL)
292 {
293 This->disconnect_reason = 262;
294 return False;
295 }
296
297 This->tcp.out.size = 4096;
298 This->tcp.out.data = (uint8 *) malloc(This->tcp.out.size);
299
300 if(This->tcp.out.data == NULL)
301 {
302 This->disconnect_reason = 262;
303 return False;
304 }
305
306 return True;
307}
#define close
Definition: acwin.h:98
#define INADDR_NONE
Definition: tcp.c:42
#define False
Definition: types.h:25
#define True
Definition: types.h:24
unsigned char uint8
Definition: types.h:28
#define malloc
Definition: debug_ros.c:4
#define NULL
Definition: types.h:112
#define IPPROTO_TCP
Definition: ip.h:196
#define SOCK_STREAM
Definition: tcpip.h:118
#define AF_INET
Definition: tcpip.h:117
PHOSTENT WSAAPI gethostbyname(IN const char FAR *name)
Definition: getxbyxx.c:221
GLdouble n
Definition: glext.h:7729
GLuint res
Definition: glext.h:9613
#define inet_addr(cp)
Definition: inet.h:98
#define error(str)
Definition: mkdosfs.c:1605
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
#define htons(x)
Definition: module.h:215
#define closesocket
Definition: ncftp.h:477
#define memset(x, y, z)
Definition: compat.h:39
namespace GUID const ADDRINFOEXW * hints
Definition: sock.c:80
INT WSAAPI setsockopt(IN SOCKET s, IN INT level, IN INT optname, IN CONST CHAR FAR *optval, IN INT optlen)
Definition: sockctrl.c:421
SOCKET WSAAPI socket(IN INT af, IN INT type, IN INT protocol)
Definition: socklife.c:143
#define TCP_NODELAY
Definition: tcpdef.h:117
static rfbScreenInfoPtr server
Definition: vnc.c:74
#define AF_UNSPEC
Definition: winsock.h:344
#define snprintf
Definition: wintirpc.h:48
#define getaddrinfo
Definition: wspiapi.h:44
#define freeaddrinfo
Definition: wspiapi.h:46

◆ tcp_disconnect()

BOOL tcp_disconnect ( RDPCLIENT This)

Definition at line 311 of file tcp.c.

312{
313 closesocket(This->tcp.sock);
314 return True;
315}

◆ tcp_get_address()

wchar_t * tcp_get_address ( RDPCLIENT This)

Definition at line 318 of file tcp.c.

319{
320#if 0
321 static char ipaddr[32];
322 struct sockaddr_in sockaddr;
323 socklen_t len = sizeof(sockaddr);
324 if (getsockname(This->tcp.sock, (struct sockaddr *) &sockaddr, &len) == 0)
325 {
326 unsigned char *ip = (unsigned char *) &sockaddr.sin_addr;
327 sprintf(ipaddr, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
328 }
329 else
330 strcpy(ipaddr, "127.0.0.1");
331 return ipaddr;
332#endif
333 return NULL; // TODO
334}
char * strcpy(char *DstString, const char *SrcString)
Definition: utclib.c:388
GLenum GLsizei len
Definition: glext.h:6722
int socklen_t
Definition: tcp.c:35
#define sprintf(buf, format,...)
Definition: sprintf.c:55
INT WSAAPI getsockname(IN SOCKET s, OUT LPSOCKADDR name, IN OUT INT FAR *namelen)
Definition: sockctrl.c:213
Definition: dhcpd.h:62

◆ tcp_init()

STREAM tcp_init ( RDPCLIENT This,
uint32  maxlen 
)

Definition at line 43 of file tcp.c.

44{
45 if (maxlen > This->tcp.out.size)
46 {
47 void * p;
48
49 p = realloc(This->tcp.out.data, maxlen);
50
51 if (p == NULL)
52 {
53 This->disconnect_reason = 262;
54 return NULL;
55 }
56
57 This->tcp.out.data = (uint8 *)p;
58 This->tcp.out.size = maxlen;
59 }
60
61 This->tcp.out.p = This->tcp.out.data;
62 This->tcp.out.end = This->tcp.out.data + This->tcp.out.size;
63 return &This->tcp.out;
64}
#define realloc
Definition: debug_ros.c:6
GLfloat GLfloat p
Definition: glext.h:8902

◆ tcp_recv()

STREAM tcp_recv ( RDPCLIENT This,
STREAM  s,
uint32  length 
)

Definition at line 110 of file tcp.c.

111{
112 unsigned int new_length, end_offset, p_offset;
113 DWORD rcvd = 0;
114
115 if (s == NULL)
116 {
117 /* read into "new" stream */
118 if (length > This->tcp.in.size)
119 {
120 void * p = realloc(This->tcp.in.data, length);
121
122 if(p == NULL)
123 {
124 This->disconnect_reason = 262;
125 return NULL;
126 }
127
128 This->tcp.in.data = (uint8 *) p;
129 This->tcp.in.size = length;
130 }
131 This->tcp.in.end = This->tcp.in.p = This->tcp.in.data;
132 s = &This->tcp.in;
133 }
134 else
135 {
136 /* append to existing stream */
137 new_length = (unsigned int)(s->end - s->data) + length;
138 if (new_length > s->size)
139 {
140 void * p = realloc(s->data, new_length);
141
142 if(p == NULL)
143 {
144 This->disconnect_reason = 262;
145 return NULL;
146 }
147
148 p_offset = (unsigned int)(s->p - s->data);
149 end_offset = (unsigned int)(s->end - s->data);
150 s->data = (uint8 *) p;
151 s->size = new_length;
152 s->p = s->data + p_offset;
153 s->end = s->data + end_offset;
154 }
155 }
156
157 while (length > 0)
158 {
160 memset(&overlapped, 0, sizeof(overlapped));
161
162 if (!ui_select(This, This->tcp.sock))
163 /* User quit */
164 return NULL;
165
166 ReadFile((HANDLE)This->tcp.sock, s->end, length, NULL, &overlapped);
167
168 switch(WaitForSingleObjectEx((HANDLE)This->tcp.sock, INFINITE, TRUE))
169 {
170 /* Success */
171 case WAIT_OBJECT_0:
172 break;
173
174 /* Timeout or error */
175 case WAIT_TIMEOUT:
176 default:
177 This->disconnect_reason = 1028;
178
179 /* Aborted, must disconnect ASAP */
181 CancelIo((HANDLE)This->tcp.sock);
182 break;
183 }
184
185 /* Wait for completion. We could hang here, but we shouldn't */
186 if(!GetOverlappedResult((HANDLE)This->tcp.sock, &overlapped, &rcvd, TRUE))
187 return False;
188
189 if (rcvd == 0)
190 {
191 error("Connection closed\n");
192 This->disconnect_reason = 2308;
193 return NULL;
194 }
195
196 s->end += rcvd;
197 length -= rcvd;
198 }
199
200 return s;
201}
int ui_select(int rdp_socket)
Definition: uimain.c:164
#define WAIT_TIMEOUT
Definition: dderror.h:14
BOOL WINAPI CancelIo(IN HANDLE hFile)
Definition: deviceio.c:290
#define TRUE
Definition: types.h:120
#define ReadFile(a, b, c, d, e)
Definition: compat.h:742
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31
#define INFINITE
Definition: serial.h:102
unsigned long DWORD
Definition: ntddk_ex.h:95
GLdouble s
Definition: gl.h:2039
GLuint GLsizei GLsizei * length
Definition: glext.h:6040
BOOL WINAPI GetOverlappedResult(IN HANDLE hFile, IN LPOVERLAPPED lpOverlapped, OUT LPDWORD lpNumberOfBytesTransferred, IN BOOL bWait)
Definition: iocompl.c:221
namespace GUID const ADDRINFOEXW ADDRINFOEXW struct timeval OVERLAPPED * overlapped
Definition: sock.c:81
DWORD WINAPI WaitForSingleObjectEx(IN HANDLE hHandle, IN DWORD dwMilliseconds, IN BOOL bAlertable)
Definition: synch.c:94
#define WAIT_IO_COMPLETION
Definition: winbase.h:411
#define WAIT_OBJECT_0
Definition: winbase.h:406

◆ tcp_reset_state()

void tcp_reset_state ( RDPCLIENT This)

Definition at line 339 of file tcp.c.

340{
341 This->tcp.sock = -1; /* reset socket */
342
343 /* Clear the incoming stream */
344 if (This->tcp.in.data != NULL)
345 free(This->tcp.in.data);
346 This->tcp.in.p = NULL;
347 This->tcp.in.end = NULL;
348 This->tcp.in.data = NULL;
349 This->tcp.in.size = 0;
350 This->tcp.in.iso_hdr = NULL;
351 This->tcp.in.mcs_hdr = NULL;
352 This->tcp.in.sec_hdr = NULL;
353 This->tcp.in.rdp_hdr = NULL;
354 This->tcp.in.channel_hdr = NULL;
355
356 /* Clear the outgoing stream */
357 if (This->tcp.out.data != NULL)
358 free(This->tcp.out.data);
359 This->tcp.out.p = NULL;
360 This->tcp.out.end = NULL;
361 This->tcp.out.data = NULL;
362 This->tcp.out.size = 0;
363 This->tcp.out.iso_hdr = NULL;
364 This->tcp.out.mcs_hdr = NULL;
365 This->tcp.out.sec_hdr = NULL;
366 This->tcp.out.rdp_hdr = NULL;
367 This->tcp.out.channel_hdr = NULL;
368}
#define free
Definition: debug_ros.c:5

◆ tcp_send()

BOOL tcp_send ( RDPCLIENT This,
STREAM  s 
)

Definition at line 68 of file tcp.c.

69{
70 int length = (int)(s->end - s->data);
71 int total = 0;
72 DWORD sent;
73
75 memset(&overlapped, 0, sizeof(overlapped));
76
77 while (total < length)
78 {
79 WriteFile((HANDLE)This->tcp.sock, s->data + total, length - total, NULL, &overlapped);
80
81 switch(WaitForSingleObjectEx((HANDLE)This->tcp.sock, INFINITE, TRUE))
82 {
83 /* Success */
84 case WAIT_OBJECT_0:
85 break;
86
87 /* Timeout or error */
88 case WAIT_TIMEOUT:
89 default:
90 This->disconnect_reason = 772;
91
92 /* Aborted, must disconnect ASAP */
94 CancelIo((HANDLE)This->tcp.sock);
95 break;
96 }
97
98 /* Wait for completion. We could hang here, but we shouldn't */
100 return False;
101
102 total += sent;
103 }
104
105 return True;
106}
@ sent
Definition: SystemMenu.c:27
BOOL WINAPI WriteFile(IN HANDLE hFile, IN LPCVOID lpBuffer, IN DWORD nNumberOfBytesToWrite OPTIONAL, OUT LPDWORD lpNumberOfBytesWritten, IN LPOVERLAPPED lpOverlapped OPTIONAL)
Definition: rw.c:24
size_t total