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/* |
/* -*- c-basic-offset: 8 -*- |
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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 1999-2002 |
Copyright (C) Matthew Chapman 1999-2005 |
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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 int sock; |
static int sock; |
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static struct stream in; |
static struct stream in; |
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static struct stream out; |
static struct stream out; |
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extern int tcp_port_rdp; |
int g_tcp_port_rdp = TCP_PORT_RDP; |
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/* Initialise TCP transport data packet */ |
/* Initialise TCP transport data packet */ |
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STREAM |
STREAM |
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return NULL; |
return NULL; |
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rcvd = recv(sock, s->end, length, 0); |
rcvd = recv(sock, s->end, length, 0); |
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if (rcvd <= 0) |
if (rcvd < 0) |
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{ |
{ |
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error("recv: %s\n", strerror(errno)); |
error("recv: %s\n", strerror(errno)); |
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return NULL; |
return NULL; |
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} |
} |
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else if (rcvd == 0) |
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{ |
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error("Connection closed\n"); |
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return NULL; |
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} |
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s->end += rcvd; |
s->end += rcvd; |
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length -= rcvd; |
length -= rcvd; |
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BOOL |
BOOL |
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tcp_connect(char *server) |
tcp_connect(char *server) |
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{ |
{ |
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int true_value = 1; |
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#ifdef IPv6 |
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int n; |
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struct addrinfo hints, *res, *ressave; |
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char tcp_port_rdp_s[10]; |
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snprintf(tcp_port_rdp_s, 10, "%d", g_tcp_port_rdp); |
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memset(&hints, 0, sizeof(struct addrinfo)); |
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hints.ai_family = AF_UNSPEC; |
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hints.ai_socktype = SOCK_STREAM; |
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if ((n = getaddrinfo(server, tcp_port_rdp_s, &hints, &res))) |
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{ |
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error("getaddrinfo: %s\n", gai_strerror(n)); |
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return False; |
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} |
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ressave = res; |
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sock = -1; |
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while (res) |
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{ |
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sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol); |
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if (!(sock < 0)) |
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{ |
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if (connect(sock, res->ai_addr, res->ai_addrlen) == 0) |
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break; |
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close(sock); |
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sock = -1; |
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} |
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res = res->ai_next; |
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} |
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freeaddrinfo(ressave); |
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if (sock == -1) |
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{ |
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error("%s: unable to connect\n", server); |
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return False; |
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} |
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#else /* no IPv6 support */ |
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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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int true_value = 1; |
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if ((nslookup = gethostbyname(server)) != NULL) |
if ((nslookup = gethostbyname(server)) != NULL) |
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{ |
{ |
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} |
} |
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servaddr.sin_family = AF_INET; |
servaddr.sin_family = AF_INET; |
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servaddr.sin_port = htons(tcp_port_rdp); |
servaddr.sin_port = htons(g_tcp_port_rdp); |
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if (connect(sock, (struct sockaddr *) &servaddr, sizeof(struct sockaddr)) < 0) |
if (connect(sock, (struct sockaddr *) &servaddr, sizeof(struct sockaddr)) < 0) |
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{ |
{ |
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return False; |
return False; |
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} |
} |
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#endif /* IPv6 */ |
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setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void *) &true_value, sizeof(true_value)); |
setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void *) &true_value, sizeof(true_value)); |
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in.size = 4096; |
in.size = 4096; |
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{ |
{ |
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close(sock); |
close(sock); |
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} |
} |
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char * |
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tcp_get_address() |
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{ |
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static char ipaddr[32]; |
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struct sockaddr_in sockaddr; |
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socklen_t len = sizeof(sockaddr); |
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if (getsockname(sock, (struct sockaddr *) &sockaddr, &len) == 0) |
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{ |
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unsigned char *ip = (unsigned char *) &sockaddr.sin_addr; |
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sprintf(ipaddr, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]); |
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} |
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else |
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strcpy(ipaddr, "127.0.0.1"); |
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return ipaddr; |
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} |