socket.cpp
3.71 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/* Copyright (C) 2010-2012 kaosu (qiupf2000@gmail.com)
* This file is part of the Interactive Text Hooker.
* Interactive Text Hooker is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <winsock2.h>
#include <ws2tcpip.h>
#include <intrin.h>
#include "socket.h"
#include <ITH\IHF_SYS.h>
static const char* googleITH = "interactive-text-hooker.googlecode.com";
//74.125.31.82
static const DWORD googleITH4 = 0x521f7d4a; //
//2404:6800:800b::64
static const unsigned char googleITH6[0x10] = {0x24,0x4,0x68,0x00,0x80,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x65};
TransportSocket::~TransportSocket()
{
close();
}
int TransportSocket::socket()
{
int s = _InterlockedExchange((long*)&sock,1);
if (s == 0)
{
s = ::socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if (s != INVALID_SOCKET) sock = s;
return s;
}
else sock = 0;
return -1;
}
int TransportSocket::connect( char* server, int port )
{
if (port == 0) port = 80;
if (_stricmp(server,googleITH) == 0)
{
sockaddr_in6 addr6 = {};
addr6.sin6_family = AF_INET6;
addr6.sin6_port = htons(port);
memcpy(addr6.sin6_addr.s6_addr,googleITH6,0x10);
sock6 = ::socket(AF_INET6,SOCK_STREAM,IPPROTO_TCP);
error = ::connect(sock6,(sockaddr*)&addr6,sizeof(addr6));
if (error != 0)
{
closesocket(sock6);
sock6 = 0;
}
else return 0;
sockaddr_in remote;
remote.sin_family = AF_INET;
remote.sin_addr.s_addr = googleITH4;
remote.sin_port = htons(port);
return ::connect(sock, (struct sockaddr *)&remote, sizeof(remote));
}
unsigned long addr = 0;
unsigned long ip1,ip2,ip3,ip4;
if (sscanf(server,"%d.%d.%d.%d",&ip1,&ip2,&ip3,&ip4) == 4)
{
addr |= ip4;
addr <<= 8;
addr |= ip3;
addr <<= 8;
addr |= ip2;
addr <<= 8;
addr |= ip1;
}
else
{
hostent* host = gethostbyname(server);
if (host == 0) return -1;
addr = *(ULONG*)host->h_addr_list[0];
}
sockaddr_in remote;
remote.sin_family = AF_INET;
remote.sin_addr.s_addr = addr;
remote.sin_port = htons(port);
return ::connect(sock, (struct sockaddr *)&remote, sizeof(struct sockaddr));
}
int TransportSocket::close()
{
int s = _InterlockedExchange((long*)&sock6,0);
if (s == 0)
{
s = _InterlockedExchange((long*)&sock,0);
if (s == 0) return 0;
}
else closesocket(sock);
shutdown(s, SD_BOTH);
//Wait for gracefully shutdown. In normal network condition TCP should shutdown in 1 sec.
//As only (20(IP) + 20(TCP)) * 2(FIN&ACK, ACK) = 80 bytes needed to be transmitted.
LARGE_INTEGER sleep_time = {-10000000, -1};
NtDelayExecution(0,&sleep_time);
return closesocket(s);
}
int TransportSocket::send( void* data, int len )
{
int s = sock6 != 0 ? sock6 : sock;
return ::send(s,(char*)data,len,0);
}
int TransportSocket::recv( void* data, int len )
{
int s = sock6 != 0 ? sock6 : sock;
return ::recv(s,(char*)data,len,0);
}
/*void DNSCache::SetAddress(char* server, unsigned long addr)
{
Insert(server, addr);
}
unsigned long DNSCache::GetAddress(char* server)
{
TreeNode<char*,unsigned long>* node;
node = Search(server);
if (node == 0) return 0;
return node->data;
}*/