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/* |
/* |
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rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
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Protocol services - TCP layer |
Protocol services - TCP layer |
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Copyright (C) Matthew Chapman 1999-2000 |
Copyright (C) Matthew Chapman 1999-2001 |
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This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
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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 |
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static struct stream out; |
static struct stream out; |
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/* Initialise TCP transport data packet */ |
/* Initialise TCP transport data packet */ |
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STREAM tcp_init(int maxlen) |
STREAM |
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tcp_init(int maxlen) |
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{ |
{ |
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if (maxlen > out.size) |
if (maxlen > out.size) |
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{ |
{ |
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} |
} |
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/* Send TCP transport data packet */ |
/* Send TCP transport data packet */ |
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void tcp_send(STREAM s) |
void |
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tcp_send(STREAM s) |
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{ |
{ |
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int length = s->end - s->data; |
int length = s->end - s->data; |
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int sent, total = 0; |
int sent, total = 0; |
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if (sent <= 0) |
if (sent <= 0) |
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{ |
{ |
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STATUS("write: %s\n", strerror(errno)); |
error("write: %s\n", strerror(errno)); |
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return; |
return; |
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} |
} |
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} |
} |
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/* Receive a message on the TCP layer */ |
/* Receive a message on the TCP layer */ |
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STREAM tcp_recv(int length) |
STREAM |
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tcp_recv(int length) |
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{ |
{ |
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int ret, rcvd = 0; |
int ret, rcvd = 0; |
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struct timeval tv; |
struct timeval tv; |
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if (rcvd <= 0) |
if (rcvd <= 0) |
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{ |
{ |
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STATUS("read: %s\n", strerror(errno)); |
error("read: %s\n", strerror(errno)); |
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return NULL; |
return NULL; |
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} |
} |
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} |
} |
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/* Establish a connection on the TCP layer */ |
/* Establish a connection on the TCP layer */ |
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BOOL tcp_connect(char *server) |
BOOL |
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tcp_connect(char *server) |
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{ |
{ |
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struct hostent *nslookup; |
struct hostent *nslookup; |
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struct sockaddr_in servaddr; |
struct sockaddr_in servaddr; |
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} |
} |
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else if (!(servaddr.sin_addr.s_addr = inet_addr(server))) |
else if (!(servaddr.sin_addr.s_addr = inet_addr(server))) |
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{ |
{ |
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STATUS("%s: unable to resolve host\n", server); |
error("%s: unable to resolve host\n", server); |
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return False; |
return False; |
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} |
} |
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if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) |
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) |
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{ |
{ |
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STATUS("socket: %s\n", strerror(errno)); |
error("socket: %s\n", strerror(errno)); |
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return False; |
return False; |
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} |
} |
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(sock, (struct sockaddr *) &servaddr, |
(sock, (struct sockaddr *) &servaddr, |
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sizeof(struct sockaddr)) < 0) |
sizeof(struct sockaddr)) < 0) |
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{ |
{ |
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STATUS("connect: %s\n", strerror(errno)); |
error("connect: %s\n", strerror(errno)); |
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close(sock); |
close(sock); |
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return False; |
return False; |
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} |
} |
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} |
} |
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/* Disconnect on the TCP layer */ |
/* Disconnect on the TCP layer */ |
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void tcp_disconnect() |
void |
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tcp_disconnect() |
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{ |
{ |
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close(sock); |
close(sock); |
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} |
} |