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BaseClient.cpp
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BaseClient.cpp
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//this file is part of eMule
//Copyright (C)2002-2008 Merkur ( strEmail.Format("%s@%s", "devteam", "emule-project.net") / http://www.emule-project.net )
//
//This program 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 2 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, write to the Free Software
//Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#include "stdafx.h"
#ifdef _DEBUG
#include "DebugHelpers.h"
#endif
#include "emule.h"
#include "UpDownClient.h"
#include "FriendList.h"
#include "Clientlist.h"
#include "OtherFunctions.h"
#include "PartFile.h"
#include "ListenSocket.h"
#include "PeerCacheSocket.h"
#include "Friend.h"
#include <zlib/zlib.h>
#include "Packets.h"
#include "Opcodes.h"
#include "SafeFile.h"
#include "Preferences.h"
#include "Server.h"
#include "ClientCredits.h"
#include "IPFilter.h"
#include "Statistics.h"
#include "Sockets.h"
#include "DownloadQueue.h"
#include "UploadQueue.h"
#include "SearchFile.h"
#include "SearchList.h"
#include "SharedFileList.h"
#include "Kademlia/Kademlia/Kademlia.h"
#include "Kademlia/Kademlia/Search.h"
#include "Kademlia/Kademlia/SearchManager.h"
#include "Kademlia/Kademlia/UDPFirewallTester.h"
#include "Kademlia/routing/RoutingZone.h"
#include "Kademlia/Utils/UInt128.h"
#include "Kademlia/Net/KademliaUDPListener.h"
#include "Kademlia/Kademlia/Prefs.h"
#include "emuledlg.h"
#include "ServerWnd.h"
#include "TransferDlg.h"
#include "ChatWnd.h"
#include "CxImage/xImage.h"
#include "PreviewDlg.h"
#include "Exceptions.h"
#include "Peercachefinder.h"
#include "ClientUDPSocket.h"
#include "shahashset.h"
#include "Log.h"
#include "CaptchaGenerator.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define URLINDICATOR _T("http:|www.|.de |.net |.com |.org |.to |.tk |.cc |.fr |ftp:|ed2k:|https:|ftp.|.info|.biz|.uk|.eu|.es|.tv|.cn|.tw|.ws|.nu|.jp")
IMPLEMENT_DYNAMIC(CClientException, CException)
IMPLEMENT_DYNAMIC(CUpDownClient, CObject)
CUpDownClient::CUpDownClient(CClientReqSocket* sender)
{
socket = sender;
reqfile = NULL;
Init();
}
CUpDownClient::CUpDownClient(CPartFile* in_reqfile, uint16 in_port, uint32 in_userid,uint32 in_serverip, uint16 in_serverport, bool ed2kID)
{
//Converting to the HybridID system.. The ED2K system didn't take into account of IP address ending in 0..
//All IP addresses ending in 0 were assumed to be a lowID because of the calculations.
socket = NULL;
reqfile = in_reqfile;
Init();
m_nUserPort = in_port;
//If this is a ED2K source, check if it's a lowID.. If not, convert it to a HyrbidID.
//Else, it's already in hybrid form.
if(ed2kID && !IsLowID(in_userid))
m_nUserIDHybrid = ntohl(in_userid);
else
m_nUserIDHybrid = in_userid;
//If highID and ED2K source, incoming ID and IP are equal..
//If highID and Kad source, incoming IP needs ntohl for the IP
if (!HasLowID() && ed2kID)
m_nConnectIP = in_userid;
else if(!HasLowID())
m_nConnectIP = ntohl(in_userid);
m_dwServerIP = in_serverip;
m_nServerPort = in_serverport;
}
void CUpDownClient::Init()
{
m_nChatstate = MS_NONE;
m_nKadState = KS_NONE;
m_nChatCaptchaState = CA_NONE;
m_nUploadState = US_NONE;
m_nDownloadState = DS_NONE;
m_SecureIdentState = IS_UNAVAILABLE;
m_nConnectingState = CCS_NONE;
m_ePeerCacheDownState = PCDS_NONE;
m_ePeerCacheUpState = PCUS_NONE;
credits = NULL;
m_nSumForAvgUpDataRate = 0;
m_bAddNextConnect = false;
m_cShowDR = 0;
m_nUDPPort = 0;
m_nKadPort = 0;
m_nTransferredUp = 0;
m_cAsked = 0;
m_cDownAsked = 0;
m_nUpDatarate = 0;
m_pszUsername = 0;
m_nUserIDHybrid = 0;
m_dwServerIP = 0;
m_nServerPort = 0;
m_iFileListRequested = 0;
m_dwLastUpRequest = 0;
m_bEmuleProtocol = false;
m_bCompleteSource = false;
m_bFriendSlot = false;
m_bCommentDirty = false;
m_bReaskPending = false;
m_bUDPPending = false;
m_byEmuleVersion = 0;
m_nUserPort = 0;
m_nPartCount = 0;
m_nUpPartCount = 0;
m_abyPartStatus = 0;
m_abyUpPartStatus = 0;
m_dwUploadTime = 0;
m_nTransferredDown = 0;
m_nDownDatarate = 0;
m_nDownDataRateMS = 0;
m_dwLastBlockReceived = 0;
m_byDataCompVer = 0;
m_byUDPVer = 0;
m_bySourceExchange1Ver = 0;
m_byAcceptCommentVer = 0;
m_byExtendedRequestsVer = 0;
m_nRemoteQueueRank = 0;
m_dwLastSourceRequest = 0;
m_dwLastSourceAnswer = 0;
m_dwLastAskedForSources = 0;
m_byCompatibleClient = 0;
m_nSourceFrom = SF_SERVER;
m_bIsHybrid = false;
m_bIsML=false;
m_Friend = NULL;
m_uFileRating=0;
(void)m_strFileComment;
m_fMessageFiltered = 0;
m_fIsSpammer = 0;
m_cMessagesReceived = 0;
m_cMessagesSent = 0;
m_nCurSessionUp = 0;
m_nCurSessionDown = 0;
m_nCurSessionPayloadDown = 0;
m_nSumForAvgDownDataRate = 0;
m_clientSoft=SO_UNKNOWN;
m_bRemoteQueueFull = false;
md4clr(m_achUserHash);
SetBuddyID(NULL);
m_nBuddyIP = 0;
m_nBuddyPort = 0;
if (socket){
SOCKADDR_IN sockAddr = {0};
int nSockAddrLen = sizeof(sockAddr);
socket->GetPeerName((SOCKADDR*)&sockAddr, &nSockAddrLen);
SetIP(sockAddr.sin_addr.S_un.S_addr);
}
else{
SetIP(0);
}
m_fHashsetRequestingAICH = 0;
m_fHashsetRequestingMD4 = 0;
m_fSharedDirectories = 0;
m_fSentCancelTransfer = 0;
m_nClientVersion = 0;
m_lastRefreshedDLDisplay = 0;
m_dwDownStartTime = 0;
m_nLastBlockOffset = (uint64)-1;
m_bUnicodeSupport = false;
m_dwLastSignatureIP = 0;
m_bySupportSecIdent = 0;
m_byInfopacketsReceived = IP_NONE;
m_lastPartAsked = (uint16)-1;
m_nUpCompleteSourcesCount= 0;
m_fSupportsPreview = 0;
m_fPreviewReqPending = 0;
m_fPreviewAnsPending = 0;
m_bTransferredDownMini = false;
m_addedPayloadQueueSession = 0;
m_nCurQueueSessionPayloadUp = 0; // PENDING: Is this necessary? ResetSessionUp()...
m_lastRefreshedULDisplay = ::GetTickCount();
m_bGPLEvildoer = false;
m_bHelloAnswerPending = false;
m_fNoViewSharedFiles = 0;
m_bMultiPacket = 0;
md4clr(requpfileid);
m_nTotalUDPPackets = 0;
m_nFailedUDPPackets = 0;
m_nUrlStartPos = (uint64)-1;
m_iHttpSendState = 0;
m_fPeerCache = 0;
m_uPeerCacheDownloadPushId = 0;
m_uPeerCacheUploadPushId = 0;
m_pPCDownSocket = NULL;
m_pPCUpSocket = NULL;
m_uPeerCacheRemoteIP = 0;
m_bPeerCacheDownHit = false;
m_bPeerCacheUpHit = false;
m_fNeedOurPublicIP = 0;
m_random_update_wait = (uint32)(rand()/(RAND_MAX/1000));
m_bSourceExchangeSwapped = false; // ZZ:DownloadManager
m_dwLastTriedToConnect = ::GetTickCount()-20*60*1000; // ZZ:DownloadManager
m_fQueueRankPending = 0;
m_fUnaskQueueRankRecv = 0;
m_fFailedFileIdReqs = 0;
m_slotNumber = 0;
lastSwapForSourceExchangeTick = 0;
m_pReqFileAICHHash = NULL;
m_fSupportsAICH = 0;
m_fAICHRequested = 0;
m_byKadVersion = 0;
SetLastBuddyPingPongTime();
m_fSentOutOfPartReqs = 0;
m_bCollectionUploadSlot = false;
m_fSupportsLargeFiles = 0;
m_fExtMultiPacket = 0;
m_fRequestsCryptLayer = 0;
m_fSupportsCryptLayer = 0;
m_fRequiresCryptLayer = 0;
m_fSupportsSourceEx2 = 0;
m_fSupportsCaptcha = 0;
m_fDirectUDPCallback = 0;
m_cCaptchasSent = 0;
m_fSupportsFileIdent = 0;
}
CUpDownClient::~CUpDownClient(){
if (IsAICHReqPending()){
m_fAICHRequested = FALSE;
CAICHRecoveryHashSet::ClientAICHRequestFailed(this);
}
if (GetFriend() != NULL)
{
if (GetFriend()->IsTryingToConnect())
GetFriend()->UpdateFriendConnectionState(FCR_DELETED);
m_Friend->SetLinkedClient(NULL);
}
ASSERT( m_nConnectingState == CCS_NONE || !theApp.emuledlg->IsRunning() );
theApp.clientlist->RemoveClient(this, _T("Destructing client object"));
if (socket){
socket->client = 0;
socket->Safe_Delete();
}
if (m_pPCDownSocket){
m_pPCDownSocket->client = NULL;
m_pPCDownSocket->Safe_Delete();
}
if (m_pPCUpSocket){
m_pPCUpSocket->client = NULL;
m_pPCUpSocket->Safe_Delete();
}
free(m_pszUsername);
delete[] m_abyPartStatus;
m_abyPartStatus = NULL;
delete[] m_abyUpPartStatus;
m_abyUpPartStatus = NULL;
FlushSendBlocks();
for (POSITION pos = m_RequestedFiles_list.GetHeadPosition();pos != 0;)
delete m_RequestedFiles_list.GetNext(pos);
for (POSITION pos = m_PendingBlocks_list.GetHeadPosition();pos != 0;){
Pending_Block_Struct *pending = m_PendingBlocks_list.GetNext(pos);
delete pending->block;
// Not always allocated
if (pending->zStream){
inflateEnd(pending->zStream);
delete pending->zStream;
}
delete pending;
}
for (POSITION pos = m_WaitingPackets_list.GetHeadPosition();pos != 0;)
delete m_WaitingPackets_list.GetNext(pos);
DEBUG_ONLY (theApp.listensocket->Debug_ClientDeleted(this));
SetUploadFileID(NULL);
m_fileReaskTimes.RemoveAll(); // ZZ:DownloadManager (one resk timestamp for each file)
delete m_pReqFileAICHHash;
}
void CUpDownClient::ClearHelloProperties()
{
m_nUDPPort = 0;
m_byUDPVer = 0;
m_byDataCompVer = 0;
m_byEmuleVersion = 0;
m_bySourceExchange1Ver = 0;
m_byAcceptCommentVer = 0;
m_byExtendedRequestsVer = 0;
m_byCompatibleClient = 0;
m_nKadPort = 0;
m_bySupportSecIdent = 0;
m_fSupportsPreview = 0;
m_nClientVersion = 0;
m_fSharedDirectories = 0;
m_bMultiPacket = 0;
m_fPeerCache = 0;
m_uPeerCacheDownloadPushId = 0;
m_uPeerCacheUploadPushId = 0;
m_byKadVersion = 0;
m_fSupportsLargeFiles = 0;
m_fExtMultiPacket = 0;
m_fRequestsCryptLayer = 0;
m_fSupportsCryptLayer = 0;
m_fRequiresCryptLayer = 0;
m_fSupportsSourceEx2 = 0;
m_fSupportsCaptcha = 0;
m_fDirectUDPCallback = 0;
m_fSupportsFileIdent = 0;
}
bool CUpDownClient::ProcessHelloPacket(const uchar* pachPacket, uint32 nSize)
{
CSafeMemFile data(pachPacket, nSize);
data.ReadUInt8(); // read size of userhash
// reset all client properties; a client may not send a particular emule tag any longer
ClearHelloProperties();
return ProcessHelloTypePacket(&data);
}
bool CUpDownClient::ProcessHelloAnswer(const uchar* pachPacket, uint32 nSize)
{
CSafeMemFile data(pachPacket, nSize);
bool bIsMule = ProcessHelloTypePacket(&data);
m_bHelloAnswerPending = false;
return bIsMule;
}
bool CUpDownClient::ProcessHelloTypePacket(CSafeMemFile* data)
{
bool bDbgInfo = thePrefs.GetUseDebugDevice();
m_strHelloInfo.Empty();
// clear hello properties which can be changed _only_ on receiving OP_Hello/OP_HelloAnswer
m_bIsHybrid = false;
m_bIsML = false;
m_fNoViewSharedFiles = 0;
m_bUnicodeSupport = false;
data->ReadHash16(m_achUserHash);
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("Hash=%s (%s)"), md4str(m_achUserHash), DbgGetHashTypeString(m_achUserHash));
m_nUserIDHybrid = data->ReadUInt32();
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T(" UserID=%u (%s)"), m_nUserIDHybrid, ipstr(m_nUserIDHybrid));
uint16 nUserPort = data->ReadUInt16(); // hmm clientport is sent twice - why?
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T(" Port=%u"), nUserPort);
DWORD dwEmuleTags = 0;
bool bPrTag = false;
uint32 tagcount = data->ReadUInt32();
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T(" Tags=%u"), tagcount);
for (uint32 i = 0; i < tagcount; i++)
{
CTag temptag(data, true);
switch (temptag.GetNameID())
{
case CT_NAME:
if (temptag.IsStr()) {
free(m_pszUsername);
m_pszUsername = _tcsdup(temptag.GetStr());
if (bDbgInfo) {
if (m_pszUsername) {//filter username for bad chars
TCHAR* psz = m_pszUsername;
while (*psz != _T('\0')) {
if (*psz == _T('\n') || *psz == _T('\r'))
*psz = _T(' ');
psz++;
}
}
m_strHelloInfo.AppendFormat(_T("\n Name='%s'"), m_pszUsername);
}
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_VERSION:
if (temptag.IsInt()) {
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n Version=%u"), temptag.GetInt());
m_nClientVersion = temptag.GetInt();
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_PORT:
if (temptag.IsInt()) {
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n Port=%u"), temptag.GetInt());
nUserPort = (uint16)temptag.GetInt();
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_MOD_VERSION:
if (temptag.IsStr())
m_strModVersion = temptag.GetStr();
else if (temptag.IsInt())
m_strModVersion.Format(_T("ModID=%u"), temptag.GetInt());
else
m_strModVersion = _T("ModID=<Unknown>");
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ModID=%s"), m_strModVersion);
CheckForGPLEvilDoer();
break;
case CT_EMULE_UDPPORTS:
// 16 KAD Port
// 16 UDP Port
if (temptag.IsInt()) {
m_nKadPort = (uint16)(temptag.GetInt() >> 16);
m_nUDPPort = (uint16)temptag.GetInt();
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n KadPort=%u UDPPort=%u"), m_nKadPort, m_nUDPPort);
dwEmuleTags |= 1;
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_EMULE_BUDDYUDP:
// 16 --Reserved for future use--
// 16 BUDDY Port
if (temptag.IsInt()) {
m_nBuddyPort = (uint16)temptag.GetInt();
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n BuddyPort=%u"), m_nBuddyPort);
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_EMULE_BUDDYIP:
// 32 BUDDY IP
if (temptag.IsInt()) {
m_nBuddyIP = temptag.GetInt();
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n BuddyIP=%s"), ipstr(m_nBuddyIP));
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_EMULE_MISCOPTIONS1:
// 3 AICH Version (0 = not supported)
// 1 Unicode
// 4 UDP version
// 4 Data compression version
// 4 Secure Ident
// 4 Source Exchange - deprecated
// 4 Ext. Requests
// 4 Comments
// 1 PeerChache supported
// 1 No 'View Shared Files' supported
// 1 MultiPacket - deprecated with FileIdentifiers/MultipacketExt2
// 1 Preview
if (temptag.IsInt()) {
m_fSupportsAICH = (temptag.GetInt() >> 29) & 0x07;
m_bUnicodeSupport = (temptag.GetInt() >> 28) & 0x01;
m_byUDPVer = (uint8)((temptag.GetInt() >> 24) & 0x0f);
m_byDataCompVer = (uint8)((temptag.GetInt() >> 20) & 0x0f);
m_bySupportSecIdent = (uint8)((temptag.GetInt() >> 16) & 0x0f);
m_bySourceExchange1Ver = (uint8)((temptag.GetInt() >> 12) & 0x0f);
m_byExtendedRequestsVer = (uint8)((temptag.GetInt() >> 8) & 0x0f);
m_byAcceptCommentVer = (uint8)((temptag.GetInt() >> 4) & 0x0f);
m_fPeerCache = (temptag.GetInt() >> 3) & 0x01;
m_fNoViewSharedFiles = (temptag.GetInt() >> 2) & 0x01;
m_bMultiPacket = (temptag.GetInt() >> 1) & 0x01;
m_fSupportsPreview = (temptag.GetInt() >> 0) & 0x01;
dwEmuleTags |= 2;
if (bDbgInfo) {
m_strHelloInfo.AppendFormat(_T("\n PeerCache=%u UDPVer=%u DataComp=%u SecIdent=%u SrcExchg=%u")
_T(" ExtReq=%u Commnt=%u Preview=%u NoViewFiles=%u Unicode=%u"),
m_fPeerCache, m_byUDPVer, m_byDataCompVer, m_bySupportSecIdent, m_bySourceExchange1Ver,
m_byExtendedRequestsVer, m_byAcceptCommentVer, m_fSupportsPreview, m_fNoViewSharedFiles, m_bUnicodeSupport);
}
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_EMULE_MISCOPTIONS2:
// 18 Reserved
// 1 Supports new FileIdentifiers/MultipacketExt2
// 1 Direct UDP Callback supported and available
// 1 Supports ChatCaptchas
// 1 Supports SourceExachnge2 Packets, ignores SX1 Packet Version
// 1 Requires CryptLayer
// 1 Requests CryptLayer
// 1 Supports CryptLayer
// 1 Reserved (ModBit)
// 1 Ext Multipacket (Hash+Size instead of Hash) - deprecated with FileIdentifiers/MultipacketExt2
// 1 Large Files (includes support for 64bit tags)
// 4 Kad Version - will go up to version 15 only (may need to add another field at some point in the future)
if (temptag.IsInt()) {
m_fSupportsFileIdent = (temptag.GetInt() >> 13) & 0x01;
m_fDirectUDPCallback = (temptag.GetInt() >> 12) & 0x01;
m_fSupportsCaptcha = (temptag.GetInt() >> 11) & 0x01;
m_fSupportsSourceEx2 = (temptag.GetInt() >> 10) & 0x01;
m_fRequiresCryptLayer = (temptag.GetInt() >> 9) & 0x01;
m_fRequestsCryptLayer = (temptag.GetInt() >> 8) & 0x01;
m_fSupportsCryptLayer = (temptag.GetInt() >> 7) & 0x01;
// reserved 1
m_fExtMultiPacket = (temptag.GetInt() >> 5) & 0x01;
m_fSupportsLargeFiles = (temptag.GetInt() >> 4) & 0x01;
m_byKadVersion = (uint8)((temptag.GetInt() >> 0) & 0x0f);
dwEmuleTags |= 8;
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n KadVersion=%u, LargeFiles=%u ExtMultiPacket=%u CryptLayerSupport=%u CryptLayerRequest=%u CryptLayerRequires=%u SupportsSourceEx2=%u SupportsCaptcha=%u DirectUDPCallback=%u"), m_byKadVersion, m_fSupportsLargeFiles, m_fExtMultiPacket, m_fSupportsCryptLayer, m_fRequestsCryptLayer, m_fRequiresCryptLayer, m_fSupportsSourceEx2, m_fSupportsCaptcha, m_fDirectUDPCallback);
m_fRequestsCryptLayer &= m_fSupportsCryptLayer;
m_fRequiresCryptLayer &= m_fRequestsCryptLayer;
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case CT_EMULE_VERSION:
// 8 Compatible Client ID
// 7 Mjr Version (Doesn't really matter..)
// 7 Min Version (Only need 0-99)
// 3 Upd Version (Only need 0-5)
// 7 Bld Version (Only need 0-99) -- currently not used
if (temptag.IsInt()) {
m_byCompatibleClient = (uint8)((temptag.GetInt() >> 24));
m_nClientVersion = temptag.GetInt() & 0x00ffffff;
m_byEmuleVersion = 0x99;
m_fSharedDirectories = 1;
dwEmuleTags |= 4;
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ClientVer=%u.%u.%u.%u Comptbl=%u"), (m_nClientVersion >> 17) & 0x7f, (m_nClientVersion >> 10) & 0x7f, (m_nClientVersion >> 7) & 0x07, m_nClientVersion & 0x7f, m_byCompatibleClient);
}
else if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
default:
// Since eDonkeyHybrid 1.3 is no longer sending the additional Int32 at the end of the Hello packet,
// we use the "pr=1" tag to determine them.
if (temptag.GetName() && temptag.GetName()[0]=='p' && temptag.GetName()[1]=='r') {
bPrTag = true;
}
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***UnkTag=%s"), temptag.GetFullInfo());
}
}
m_nUserPort = nUserPort;
m_dwServerIP = data->ReadUInt32();
m_nServerPort = data->ReadUInt16();
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n Server=%s:%u"), ipstr(m_dwServerIP), m_nServerPort);
// Check for additional data in Hello packet to determine client's software version.
//
// *) eDonkeyHybrid 0.40 - 1.2 sends an additional Int32. (Since 1.3 they don't send it any longer.)
// *) MLdonkey sends an additional Int32
//
if (data->GetLength() - data->GetPosition() == sizeof(uint32)){
uint32 test = data->ReadUInt32();
if (test == 'KDLM'){
m_bIsML = true;
if (bDbgInfo)
m_strHelloInfo += _T("\n ***AddData: \"MLDK\"");
}
else{
m_bIsHybrid = true;
if (bDbgInfo)
m_strHelloInfo.AppendFormat(_T("\n ***AddData: uint32=%u (0x%08x)"), test, test);
}
}
else if (bDbgInfo && data->GetPosition() < data->GetLength()){
UINT uAddHelloDataSize = (UINT)(data->GetLength() - data->GetPosition());
if (uAddHelloDataSize == sizeof(uint32)){
DWORD dwAddHelloInt32 = data->ReadUInt32();
m_strHelloInfo.AppendFormat(_T("\n ***AddData: uint32=%u (0x%08x)"), dwAddHelloInt32, dwAddHelloInt32);
}
else if (uAddHelloDataSize == sizeof(uint32)+sizeof(uint16)){
DWORD dwAddHelloInt32 = data->ReadUInt32();
WORD w = data->ReadUInt16();
m_strHelloInfo.AppendFormat(_T("\n ***AddData: uint32=%u (0x%08x), uint16=%u (0x%04x)"), dwAddHelloInt32, dwAddHelloInt32, w, w);
}
else
m_strHelloInfo.AppendFormat(_T("\n ***AddData: %u bytes"), uAddHelloDataSize);
}
SOCKADDR_IN sockAddr = {0};
int nSockAddrLen = sizeof(sockAddr);
socket->GetPeerName((SOCKADDR*)&sockAddr, &nSockAddrLen);
SetIP(sockAddr.sin_addr.S_un.S_addr);
if (thePrefs.GetAddServersFromClients() && m_dwServerIP && m_nServerPort){
CServer* addsrv = new CServer(m_nServerPort, ipstr(m_dwServerIP));
addsrv->SetListName(addsrv->GetAddress());
addsrv->SetPreference(SRV_PR_LOW);
if (!theApp.emuledlg->serverwnd->serverlistctrl.AddServer(addsrv, true))
delete addsrv;
}
//(a)If this is a highID user, store the ID in the Hybrid format.
//(b)Some older clients will not send a ID, these client are HighID users that are not connected to a server.
//(c)Kad users with a *.*.*.0 IPs will look like a lowID user they are actually a highID user.. They can be detected easily
//because they will send a ID that is the same as their IP..
if(!HasLowID() || m_nUserIDHybrid == 0 || m_nUserIDHybrid == m_dwUserIP )
m_nUserIDHybrid = ntohl(m_dwUserIP);
CClientCredits* pFoundCredits = theApp.clientcredits->GetCredit(m_achUserHash);
if (credits == NULL){
credits = pFoundCredits;
if (!theApp.clientlist->ComparePriorUserhash(m_dwUserIP, m_nUserPort, pFoundCredits)){
if (thePrefs.GetLogBannedClients())
AddDebugLogLine(false, _T("Clients: %s (%s), Banreason: Userhash changed (Found in TrackedClientsList)"), GetUserName(), ipstr(GetConnectIP()));
Ban();
}
}
else if (credits != pFoundCredits){
// userhash change ok, however two hours "waittime" before it can be used
credits = pFoundCredits;
if (thePrefs.GetLogBannedClients())
AddDebugLogLine(false, _T("Clients: %s (%s), Banreason: Userhash changed"), GetUserName(), ipstr(GetConnectIP()));
Ban();
}
if (GetFriend() != NULL && GetFriend()->HasUserhash() && md4cmp(GetFriend()->m_abyUserhash, m_achUserHash) != 0)
{
// this isnt our friend anymore and it will be removed/replaced, tell our friendobject about it
if (GetFriend()->IsTryingToConnect())
GetFriend()->UpdateFriendConnectionState(FCR_USERHASHFAILED); // this will remove our linked friend
else
GetFriend()->SetLinkedClient(NULL);
}
// do not replace friendobjects which have no userhash, but the fitting ip with another friend object with the
// fitting userhash (both objects would fit to this instance), as this could lead to unwanted results
if (GetFriend() == NULL || GetFriend()->HasUserhash() || GetFriend()->m_dwLastUsedIP != GetConnectIP()
|| GetFriend()->m_nLastUsedPort != GetUserPort())
{
if ((m_Friend = theApp.friendlist->SearchFriend(m_achUserHash, m_dwUserIP, m_nUserPort)) != NULL){
// Link the friend to that client
m_Friend->SetLinkedClient(this);
}
else{
// avoid that an unwanted client instance keeps a friend slot
SetFriendSlot(false);
}
}
else{
// however, copy over our userhash in this case
md4cpy(GetFriend()->m_abyUserhash, m_achUserHash);
}
// check for known major gpl breaker
CString strBuffer = m_pszUsername;
strBuffer.MakeUpper();
strBuffer.Remove(_T(' '));
if (strBuffer.Find(_T("EMULE-CLIENT")) != -1 || strBuffer.Find(_T("POWERMULE")) != -1 ){
m_bGPLEvildoer = true;
}
m_byInfopacketsReceived |= IP_EDONKEYPROTPACK;
// check if at least CT_EMULEVERSION was received, all other tags are optional
bool bIsMule = (dwEmuleTags & 0x04) == 0x04;
if (bIsMule){
m_bEmuleProtocol = true;
m_byInfopacketsReceived |= IP_EMULEPROTPACK;
}
else if (bPrTag){
m_bIsHybrid = true;
}
InitClientSoftwareVersion();
if (m_bIsHybrid)
m_fSharedDirectories = 1;
if (thePrefs.GetVerbose() && GetServerIP() == INADDR_NONE)
AddDebugLogLine(false, _T("Received invalid server IP %s from %s"), ipstr(GetServerIP()), DbgGetClientInfo());
return bIsMule;
}
void CUpDownClient::SendHelloPacket(){
if (socket == NULL){
ASSERT(0);
return;
}
CSafeMemFile data(128);
data.WriteUInt8(16); // size of userhash
SendHelloTypePacket(&data);
Packet* packet = new Packet(&data);
packet->opcode = OP_HELLO;
if (thePrefs.GetDebugClientTCPLevel() > 0)
DebugSend("OP__Hello", this);
theStats.AddUpDataOverheadOther(packet->size);
SendPacket(packet, true);
m_bHelloAnswerPending = true;
return;
}
void CUpDownClient::SendMuleInfoPacket(bool bAnswer){
if (socket == NULL){
ASSERT(0);
return;
}
CSafeMemFile data(128);
data.WriteUInt8((uint8)theApp.m_uCurVersionShort);
data.WriteUInt8(EMULE_PROTOCOL);
data.WriteUInt32(7); // nr. of tags
CTag tag(ET_COMPRESSION,1);
tag.WriteTagToFile(&data);
CTag tag2(ET_UDPVER,4);
tag2.WriteTagToFile(&data);
CTag tag3(ET_UDPPORT,thePrefs.GetUDPPort());
tag3.WriteTagToFile(&data);
CTag tag4(ET_SOURCEEXCHANGE,3);
tag4.WriteTagToFile(&data);
CTag tag5(ET_COMMENTS,1);
tag5.WriteTagToFile(&data);
CTag tag6(ET_EXTENDEDREQUEST,2);
tag6.WriteTagToFile(&data);
uint32 dwTagValue = (theApp.clientcredits->CryptoAvailable() ? 3 : 0);
if (thePrefs.CanSeeShares() != vsfaNobody) // set 'Preview supported' only if 'View Shared Files' allowed
dwTagValue |= 128;
CTag tag7(ET_FEATURES, dwTagValue);
tag7.WriteTagToFile(&data);
Packet* packet = new Packet(&data,OP_EMULEPROT);
if (!bAnswer)
packet->opcode = OP_EMULEINFO;
else
packet->opcode = OP_EMULEINFOANSWER;
if (thePrefs.GetDebugClientTCPLevel() > 0)
DebugSend(!bAnswer ? "OP__EmuleInfo" : "OP__EmuleInfoAnswer", this);
theStats.AddUpDataOverheadOther(packet->size);
SendPacket(packet, true);
}
void CUpDownClient::ProcessMuleInfoPacket(const uchar* pachPacket, uint32 nSize)
{
bool bDbgInfo = thePrefs.GetUseDebugDevice();
m_strMuleInfo.Empty();
CSafeMemFile data(pachPacket, nSize);
m_byCompatibleClient = 0;
m_byEmuleVersion = data.ReadUInt8();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("EmuleVer=0x%x"), (UINT)m_byEmuleVersion);
if (m_byEmuleVersion == 0x2B)
m_byEmuleVersion = 0x22;
uint8 protversion = data.ReadUInt8();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T(" ProtVer=%u"), (UINT)protversion);
//implicitly supported options by older clients
if (protversion == EMULE_PROTOCOL) {
//in the future do not use version to guess about new features
if (m_byEmuleVersion < 0x25 && m_byEmuleVersion > 0x22)
m_byUDPVer = 1;
if (m_byEmuleVersion < 0x25 && m_byEmuleVersion > 0x21)
m_bySourceExchange1Ver = 1;
if (m_byEmuleVersion == 0x24)
m_byAcceptCommentVer = 1;
// Shared directories are requested from eMule 0.28+ because eMule 0.27 has a bug in
// the OP_ASKSHAREDFILESDIR handler, which does not return the shared files for a
// directory which has a trailing backslash.
if (m_byEmuleVersion >= 0x28 && !m_bIsML) // MLdonkey currently does not support shared directories
m_fSharedDirectories = 1;
} else {
return;
}
uint32 tagcount = data.ReadUInt32();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T(" Tags=%u"), (UINT)tagcount);
for (uint32 i = 0; i < tagcount; i++)
{
CTag temptag(&data, false);
switch (temptag.GetNameID())
{
case ET_COMPRESSION:
// Bits 31- 8: 0 - reserved
// Bits 7- 0: data compression version
if (temptag.IsInt()) {
m_byDataCompVer = (uint8)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n Compr=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_UDPPORT:
// Bits 31-16: 0 - reserved
// Bits 15- 0: UDP port
if (temptag.IsInt()) {
m_nUDPPort = (uint16)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n UDPPort=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_UDPVER:
// Bits 31- 8: 0 - reserved
// Bits 7- 0: UDP protocol version
if (temptag.IsInt()) {
m_byUDPVer = (uint8)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n UDPVer=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_SOURCEEXCHANGE:
// Bits 31- 8: 0 - reserved
// Bits 7- 0: source exchange protocol version
if (temptag.IsInt()) {
m_bySourceExchange1Ver = (uint8)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n SrcExch=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_COMMENTS:
// Bits 31- 8: 0 - reserved
// Bits 7- 0: comments version
if (temptag.IsInt()) {
m_byAcceptCommentVer = (uint8)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n Commnts=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_EXTENDEDREQUEST:
// Bits 31- 8: 0 - reserved
// Bits 7- 0: extended requests version
if (temptag.IsInt()) {
m_byExtendedRequestsVer = (uint8)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ExtReq=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_COMPATIBLECLIENT:
// Bits 31- 8: 0 - reserved
// Bits 7- 0: compatible client ID
if (temptag.IsInt()) {
m_byCompatibleClient = (uint8)temptag.GetInt();
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n Comptbl=%u"), (UINT)temptag.GetInt());
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_FEATURES:
// Bits 31- 8: 0 - reserved
// Bit 7: Preview
// Bit 6- 0: secure identification
if (temptag.IsInt()) {
m_bySupportSecIdent = (uint8)((temptag.GetInt()) & 3);
m_fSupportsPreview = (temptag.GetInt() >> 7) & 1;
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n SecIdent=%u Preview=%u"), m_bySupportSecIdent, m_fSupportsPreview);
}
else if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkType=%s"), temptag.GetFullInfo());
break;
case ET_MOD_VERSION:
if (temptag.IsStr())
m_strModVersion = temptag.GetStr();
else if (temptag.IsInt())
m_strModVersion.Format(_T("ModID=%u"), temptag.GetInt());
else
m_strModVersion = _T("ModID=<Unknwon>");
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ModID=%s"), m_strModVersion);
CheckForGPLEvilDoer();
break;
default:
if (bDbgInfo)
m_strMuleInfo.AppendFormat(_T("\n ***UnkTag=%s"), temptag.GetFullInfo());
}
}
if (m_byDataCompVer == 0) {
m_bySourceExchange1Ver = 0;
m_byExtendedRequestsVer = 0;
m_byAcceptCommentVer = 0;
m_nUDPPort = 0;
}
if (bDbgInfo && data.GetPosition() < data.GetLength()) {
m_strMuleInfo.AppendFormat(_T("\n ***AddData: %u bytes"), data.GetLength() - data.GetPosition());
}
m_bEmuleProtocol = true;
m_byInfopacketsReceived |= IP_EMULEPROTPACK;
InitClientSoftwareVersion();
if (thePrefs.GetVerbose() && GetServerIP() == INADDR_NONE)
AddDebugLogLine(false, _T("Received invalid server IP %s from %s"), ipstr(GetServerIP()), DbgGetClientInfo());
}
void CUpDownClient::SendHelloAnswer(){
if (socket == NULL){
ASSERT(0);
return;
}
CSafeMemFile data(128);
SendHelloTypePacket(&data);
Packet* packet = new Packet(&data);
packet->opcode = OP_HELLOANSWER;
if (thePrefs.GetDebugClientTCPLevel() > 0)
DebugSend("OP__HelloAnswer", this);
theStats.AddUpDataOverheadOther(packet->size);
// Servers send a FIN right in the data packet on check connection, so we need to force the response immediate
bool bForceSend = theApp.serverconnect->AwaitingTestFromIP(GetConnectIP());
socket->SendPacket(packet, true, true, 0, bForceSend);
m_bHelloAnswerPending = false;
}
void CUpDownClient::SendHelloTypePacket(CSafeMemFile* data)
{
data->WriteHash16(thePrefs.GetUserHash());
uint32 clientid;
clientid = theApp.GetID();
data->WriteUInt32(clientid);
data->WriteUInt16(thePrefs.GetPort());
uint32 tagcount = 6;
if( theApp.clientlist->GetBuddy() && theApp.IsFirewalled() )
tagcount += 2;