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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* Copyright (C) 2004-2008 See the AUTHORS file for details.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include "DCCBounce.h"
#include "User.h"
#include "znc.h"
// If we buffer more than this in memory, we will throttle the receiving side
const unsigned int CDCCBounce::m_uiMaxDCCBuffer = 10 * 1024;
// If less than this is in the buffer, the receiving side continues
const unsigned int CDCCBounce::m_uiMinDCCBuffer = 2 * 1024;
void CDCCBounce::ReadLine(const CString& sData) {
CString sLine = sData;
while ((sLine.Right(1) == "\r") || (sLine.Right(1) == "\n")) {
sLine.RightChomp();
}
DEBUG_ONLY(cout << GetSockName() << " <- [" << sLine << "]" << endl);
PutPeer(sLine);
}
void CDCCBounce::ReadData(const char* data, int len) {
size_t BufLen;
if (m_pPeer) {
m_pPeer->Write(data, len);
BufLen = m_pPeer->GetInternalWriteBuffer().length();
if (BufLen >= m_uiMaxDCCBuffer) {
DEBUG_ONLY(cout << GetSockName() << " The send buffer is over the "
"limit (" << BufLen <<"), throttling" << endl);
PauseRead();
}
}
}
void CDCCBounce::ReadPaused() {
if (!m_pPeer || m_pPeer->GetInternalWriteBuffer().length() <= m_uiMinDCCBuffer)
UnPauseRead();
}
void CDCCBounce::Timeout() {
DEBUG_ONLY(cout << GetSockName() << " == Timeout()" << endl);
CString sType = (m_bIsChat) ? "Chat" : "Xfer";
if (IsRemote()) {
CString sHost = Csock::GetHostName();
if (!sHost.empty()) {
sHost = " to [" + sHost + ":" + CString(Csock::GetPort()) + "]";
} else {
sHost = ".";
}
m_pUser->PutStatus("DCC " + sType + " Bounce (" + m_sRemoteNick + "): Timeout while connecting" + sHost);
} else {
m_pUser->PutStatus("DCC " + sType + " Bounce (" + m_sRemoteNick + "): Timeout waiting for incoming connection [" + Csock::GetLocalIP() + ":" + CString(Csock::GetLocalPort()) + "]");
}
}
void CDCCBounce::ConnectionRefused() {
DEBUG_ONLY(cout << GetSockName() << " == ConnectionRefused()" << endl);
CString sType = (m_bIsChat) ? "Chat" : "Xfer";
CString sHost = Csock::GetHostName();
if (!sHost.empty()) {
sHost = " to [" + sHost + ":" + CString(Csock::GetPort()) + "]";
} else {
sHost = ".";
}
m_pUser->PutStatus("DCC " + sType + " Bounce (" + m_sRemoteNick + "): Connection Refused while connecting" + sHost);
}
void CDCCBounce::SockError(int iErrno) {
DEBUG_ONLY(cout << GetSockName() << " == SockError(" << iErrno << ")" << endl);
CString sType = (m_bIsChat) ? "Chat" : "Xfer";
if (IsRemote()) {
CString sHost = Csock::GetHostName();
if (!sHost.empty()) {
sHost = "[" + sHost + ":" + CString(Csock::GetPort()) + "]";
}
m_pUser->PutStatus("DCC " + sType + " Bounce (" + m_sRemoteNick + "): Socket error [" + CString(strerror(iErrno)) + "]" + sHost);
} else {
m_pUser->PutStatus("DCC " + sType + " Bounce (" + m_sRemoteNick + "): Socket error [" + CString(strerror(iErrno)) + "] [" + Csock::GetLocalIP() + ":" + CString(Csock::GetLocalPort()) + "]");
}
}
void CDCCBounce::Connected() {
DEBUG_ONLY(cout << GetSockName() << " == Connected()" << endl);
SetTimeout(0);
}
void CDCCBounce::Disconnected() {
DEBUG_ONLY(cout << GetSockName() << " == Disconnected()" << endl);
}
void CDCCBounce::Shutdown() {
m_pPeer = NULL;
DEBUG_ONLY(cout << GetSockName() << " == Close(); because my peer told me to" << endl);
Close();
}
Csock* CDCCBounce::GetSockObj(const CString& sHost, unsigned short uPort) {
Close();
if (m_sRemoteIP.empty()) {
m_sRemoteIP = sHost;
}
CDCCBounce* pSock = new CDCCBounce(sHost, uPort, m_pUser, m_sRemoteNick, m_sRemoteIP, m_sFileName, m_bIsChat);
CDCCBounce* pRemoteSock = new CDCCBounce(sHost, uPort, m_pUser, m_sRemoteNick, m_sRemoteIP, m_sFileName, m_bIsChat);
pSock->SetPeer(pRemoteSock);
pRemoteSock->SetPeer(pSock);
pRemoteSock->SetRemote(true);
pSock->SetRemote(false);
if (!CZNC::Get().GetManager().Connect(m_sConnectIP, m_uRemotePort, "DCC::" + CString((m_bIsChat) ? "Chat" : "XFER") + "::Remote::" + m_sRemoteNick, 60, false, m_sLocalIP, pRemoteSock)) {
pRemoteSock->Close();
}
pSock->SetSockName(GetSockName());
pSock->SetTimeout(0);
return pSock;
}
void CDCCBounce::PutServ(const CString& sLine) {
DEBUG_ONLY(cout << GetSockName() << " -> [" << sLine << "]" << endl);
Write(sLine + "\r\n");
}
void CDCCBounce::PutPeer(const CString& sLine) {
if (m_pPeer) {
m_pPeer->PutServ(sLine);
} else {
PutServ("*** Not connected yet ***");
}
}
unsigned short CDCCBounce::DCCRequest(const CString& sNick, unsigned long uLongIP, unsigned short uPort, const CString& sFileName, bool bIsChat, CUser* pUser, const CString& sLocalIP, const CString& sRemoteIP) {
CDCCBounce* pDCCBounce = new CDCCBounce(pUser, uLongIP, uPort, sFileName, sNick, sRemoteIP, sLocalIP, bIsChat);
unsigned short uListenPort = CZNC::Get().GetManager().ListenRand("DCC::" + CString((bIsChat) ? "Chat" : "Xfer") + "::Local::" + sNick, sLocalIP, false, SOMAXCONN, pDCCBounce, 120);
return uListenPort;
}
|
