void CCaptchaGenerator::ReGenerateCaptcha(uint32 nLetterCount)
{
Clear();
CxImage* pimgResult = new CxImage(nLetterCount > 1 ? (LETTERSIZE + (nLetterCount-1)*CROWDEDSIZE) : LETTERSIZE, 32, 1, CXIMAGE_FORMAT_BMP);
pimgResult->SetPaletteColor(0, 255, 255, 255);
pimgResult->SetPaletteColor(1, 0, 0, 0, 0);
pimgResult->Clear();
CxImage imgBlank(LETTERSIZE, LETTERSIZE, 1, CXIMAGE_FORMAT_BMP);
imgBlank.SetPaletteColor(0, 255, 255, 255);
imgBlank.SetPaletteColor(1, 0, 0, 0, 0);
imgBlank.Clear();
for (uint32 i = 0; i < nLetterCount; i++) {
CxImage imgLetter(imgBlank);
CString strLetter(schCaptchaContent[GetRandomUInt16() % ARRSIZE(schCaptchaContent)]);
m_strCaptchaText += strLetter;
uint16 nRandomSize = GetRandomUInt16() % 10;
uint16 nRandomOffset = 3 + GetRandomUInt16() % 11;
imgLetter.DrawString(NULL, nRandomOffset, 32, strLetter, imgLetter.RGBtoRGBQUAD(RGB(0, 0, 0)), _T("Arial"), 40 - nRandomSize, 1000);
//imgLetter.DrawTextA(NULL, nRandomOffset, 32, strLetter, imgLetter.RGBtoRGBQUAD(RGB(0, 0, 0)), "Arial", 40 - nRandomSize, 1000);
float fRotate = (float)(35 - (GetRandomUInt16() % 70));
imgLetter.Rotate2(fRotate, NULL, CxImage::IM_BILINEAR, CxImage::OM_BACKGROUND, 0, false, true);
uint32 nOffset = i * CROWDEDSIZE;
ASSERT( imgLetter.GetHeight() == pimgResult->GetHeight() && pimgResult->GetWidth() >= nOffset + imgLetter.GetWidth() );
for (uint32 j = 0; j < imgLetter.GetHeight(); j++)
for (uint32 k = 0; k < imgLetter.GetWidth(); k++)
if (pimgResult->GetPixelIndex(nOffset + k, j) != 1)
pimgResult->SetPixelIndex(nOffset + k, j, imgLetter.GetPixelIndex(k, j));
}
pimgResult->Jitter(1);
//pimgResult->Save("D:\\CaptchaTest.bmp", CXIMAGE_FORMAT_BMP);
m_pimgCaptcha = pimgResult;
}
bool CServerListCtrl::AddServer(const CServer* pServer, bool bAddToList, bool bRandom)
{
bool bAddTail = !bRandom || ((GetRandomUInt16() % (1 + theApp.serverlist->GetServerCount())) != 0);
if (!theApp.serverlist->AddServer(pServer, bAddTail))
return false;
if (bAddToList)
{
InsertItem(LVIF_TEXT | LVIF_PARAM, bAddTail ? GetItemCount() : 0, pServer->GetListName(), 0, 0, 0, (LPARAM)pServer);
RefreshServer(pServer);
}
ShowServerCount();
return true;
}
void CServerList::ServerStats()
{
// Update the server list even if we are connected to Kademlia only. The idea is for both networks to keep
// each other up to date.. Kad network can get you back into the ED2K network.. And the ED2K network can get
// you back into the Kad network..
if (theApp.IsConnected() && theApp.serverconnect->IsUDPSocketAvailable() && list.GetCount() > 0)
{
CServer* ping_server = GetNextStatServer();
if (!ping_server)
return;
uint32 tNow = (uint32)time(NULL);
const CServer* test = ping_server;
while (ping_server->GetLastPingedTime() != 0 && (tNow - ping_server->GetLastPingedTime()) < UDPSERVSTATREASKTIME)
{
ping_server = GetNextStatServer();
if (ping_server == test)
return;
}
// IP-filter: We do not need to IP-filter any servers here, even dynIP-servers are not
// needed to get filtered here. See also comments in 'CServerSocket::ConnectTo'.
if (ping_server->GetFailedCount() >= thePrefs.GetDeadServerRetries()) {
//Xman
// Mighty Knife: Static server handling
// Static servers can be prevented from being removed from the list.
if ((!ping_server->IsStaticMember()) || (!thePrefs.GetDontRemoveStaticServers())) {
theApp.emuledlg->serverwnd->serverlistctrl.RemoveServer(ping_server);
return;
}
//Xman end
}
srand(tNow);
ping_server->SetRealLastPingedTime(tNow); // this is not used to calcualte the next ping, but only to ensure a minimum delay for premature pings
if (!ping_server->GetCryptPingReplyPending() && (tNow - ping_server->GetLastPingedTime()) >= UDPSERVSTATREASKTIME && theApp.GetPublicIP() != 0 && thePrefs.IsServerCryptLayerUDPEnabled()){
// we try a obfsucation ping first and wait 20 seconds for an answer
// if it doesn'T get responsed, we don't count it as error but continue with a normal ping
ping_server->SetCryptPingReplyPending(true);
uint32 nPacketLen = 4 + (uint8)(rand() % 16); // max padding 16 bytes
BYTE* pRawPacket = new BYTE[nPacketLen];
uint32 dwChallenge = (rand() << 17) | (rand() << 2) | (rand() & 0x03);
if (dwChallenge == 0)
dwChallenge++;
PokeUInt32(pRawPacket, dwChallenge);
for (uint32 i = 4; i < nPacketLen; i++) // fillung up the remaining bytes with random data
pRawPacket[i] = (uint8)rand();
ping_server->SetChallenge(dwChallenge);
ping_server->SetLastPinged(GetTickCount());
ping_server->SetLastPingedTime((tNow - (uint32)UDPSERVSTATREASKTIME) + 20); // give it 20 seconds to respond
if (thePrefs.GetDebugServerUDPLevel() > 0)
Debug(_T(">>> Sending OP__GlobServStatReq (obfuscated) to server %s:%u\n"), ping_server->GetAddress(), ping_server->GetPort());
theStats.AddUpDataOverheadServer(nPacketLen);
theApp.serverconnect->SendUDPPacket(NULL, ping_server, true, ping_server->GetPort() + 12, pRawPacket, nPacketLen);
}
else if (ping_server->GetCryptPingReplyPending() || theApp.GetPublicIP() == 0 || !thePrefs.IsServerCryptLayerUDPEnabled()){
// our obfsucation ping request was not answered, so probably the server doesn'T supports obfuscation
// continue with a normal request
if (ping_server->GetCryptPingReplyPending() && thePrefs.IsServerCryptLayerUDPEnabled())
DEBUG_ONLY(DebugLog(_T("CryptPing failed for server %s"), ping_server->GetListName()));
else if (thePrefs.IsServerCryptLayerUDPEnabled())
DEBUG_ONLY(DebugLog(_T("CryptPing skipped because our public IP is unknown for server %s"), ping_server->GetListName()));
ping_server->SetCryptPingReplyPending(false);
Packet* packet = new Packet(OP_GLOBSERVSTATREQ, 4);
uint32 uChallenge = 0x55AA0000 + GetRandomUInt16();
ping_server->SetChallenge(uChallenge);
PokeUInt32(packet->pBuffer, uChallenge);
ping_server->SetLastPinged(GetTickCount());
ping_server->SetLastPingedTime(tNow - (rand() % HR2S(1)));
ping_server->AddFailedCount();
theApp.emuledlg->serverwnd->serverlistctrl.RefreshServer(ping_server);
if (thePrefs.GetDebugServerUDPLevel() > 0)
Debug(_T(">>> Sending OP__GlobServStatReq (not obfuscated) to server %s:%u\n"), ping_server->GetAddress(), ping_server->GetPort());
theStats.AddUpDataOverheadServer(packet->size);
theApp.serverconnect->SendUDPPacket(packet, ping_server, true);
}
else
ASSERT( false );
}
}
void CServerList::ServerStats()
{
// Update the server list even if we are connected to Kademlia only. The idea is for both networks to keep
// each other up to date.. Kad network can get you back into the ED2K network.. And the ED2K network can get
// you back into the Kad network..
if (theApp.IsConnected() && theApp.serverconnect->IsUDPSocketAvailable() && list.GetCount() > 0)
{
CServer* ping_server = GetNextStatServer();
if (!ping_server)
return;
uint32 tNow = (uint32)time(NULL);
const CServer* test = ping_server;
while (ping_server->GetLastPingedTime() != 0 && (tNow - ping_server->GetLastPingedTime()) < UDPSERVSTATREASKTIME)
{
ping_server = GetNextStatServer();
if (ping_server == test)
return;
}
if (ping_server->GetFailedCount() >= thePrefs.GetDeadServerRetries()) {
// Mighty Knife: Static server handling
// Static servers can be prevented from being removed from the list.
if ((!ping_server->IsStaticMember()) || (!thePrefs.GetDontRemoveStaticServers())) {
theApp.emuledlg->serverwnd->serverlistctrl.RemoveServer(ping_server);
return;
}
// [end] Mighty Knife
theApp.emuledlg->serverwnd->serverlistctrl.RemoveServer(ping_server);
return;
}
Packet* packet = new Packet(OP_GLOBSERVSTATREQ, 4);
srand(tNow);
uint32 uChallenge = 0x55AA0000 + GetRandomUInt16();
ping_server->SetChallenge(uChallenge);
PokeUInt32(packet->pBuffer, uChallenge);
ping_server->SetLastPinged(GetTickCount());
ping_server->SetLastPingedTime(tNow);
ping_server->AddFailedCount();
theApp.emuledlg->serverwnd->serverlistctrl.RefreshServer(ping_server);
if (thePrefs.GetDebugServerUDPLevel() > 0)
Debug(_T(">>> Sending OP__GlobServStatReq to server %s:%u\n"), ping_server->GetAddress(), ping_server->GetPort());
theStats.AddUpDataOverheadServer(packet->size);
theApp.serverconnect->SendUDPPacket(packet, ping_server, true);
ping_server->SetLastDescPingedCount(false);
if (ping_server->GetLastDescPingedCount() < 2)
{
// eserver 16.45+ supports a new OP_SERVER_DESC_RES answer, if the OP_SERVER_DESC_REQ contains a uint32
// challenge, the server returns additional info with OP_SERVER_DESC_RES. To properly distinguish the
// old and new OP_SERVER_DESC_RES answer, the challenge has to be selected carefully. The first 2 bytes
// of the challenge (in network byte order) MUST NOT be a valid string-len-int16!
packet = new Packet(OP_SERVER_DESC_REQ, 4);
uint32 uDescReqChallenge = ((uint32)GetRandomUInt16() << 16) + INV_SERV_DESC_LEN; // 0xF0FF = an 'invalid' string length.
ping_server->SetDescReqChallenge(uDescReqChallenge);
PokeUInt32(packet->pBuffer, uDescReqChallenge);
theStats.AddUpDataOverheadServer(packet->size);
if (thePrefs.GetDebugServerUDPLevel() > 0)
Debug(_T(">>> Sending OP__ServDescReq to server %s:%u, challenge %08x\n"), ping_server->GetAddress(), ping_server->GetPort(), uDescReqChallenge);
theApp.serverconnect->SendUDPPacket(packet, ping_server, true);
}
else
{
ping_server->SetLastDescPingedCount(true);
}
}
}
