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0006 #include "headers.h"
0007 #include "irc.h"
0008 #include "net.h"
0009 #include "strlcpy.h"
0010
0011 using namespace std;
0012 using namespace boost;
0013
0014 int nGotIRCAddresses = 0;
0015 bool fGotExternalIP = false;
0016
0017 void ThreadIRCSeed2(void* parg);
0018
0019
0020
0021
0022 #pragma pack(push, 1)
0023 struct ircaddr
0024 {
0025 int ip;
0026 short port;
0027 };
0028 #pragma pack(pop)
0029
0030 string EncodeAddress(const CAddress& addr)
0031 {
0032 struct ircaddr tmp;
0033 tmp.ip = addr.ip;
0034 tmp.port = addr.port;
0035
0036 vector<unsigned char> vch(UBEGIN(tmp), UEND(tmp));
0037 return string("u") + EncodeBase58Check(vch);
0038 }
0039
0040 bool DecodeAddress(string str, CAddress& addr)
0041 {
0042 vector<unsigned char> vch;
0043 if (!DecodeBase58Check(str.substr(1), vch))
0044 return false;
0045
0046 struct ircaddr tmp;
0047 if (vch.size() != sizeof(tmp))
0048 return false;
0049 memcpy(&tmp, &vch[0], sizeof(tmp));
0050
0051 addr = CAddress(tmp.ip, ntohs(tmp.port), NODE_NETWORK);
0052 return true;
0053 }
0054
0055
0056
0057
0058
0059
0060 static bool Send(SOCKET hSocket, const char* pszSend)
0061 {
0062 if (strstr(pszSend, "PONG") != pszSend)
0063 printf("IRC SENDING: %s\n", pszSend);
0064 const char* psz = pszSend;
0065 const char* pszEnd = psz + strlen(psz);
0066 while (psz < pszEnd)
0067 {
0068 int ret = send(hSocket, psz, pszEnd - psz, MSG_NOSIGNAL);
0069 if (ret < 0)
0070 return false;
0071 psz += ret;
0072 }
0073 return true;
0074 }
0075
0076 bool RecvLine(SOCKET hSocket, string& strLine)
0077 {
0078 strLine = "";
0079 loop
0080 {
0081 char c;
0082 int nBytes = recv(hSocket, &c, 1, 0);
0083 if (nBytes > 0)
0084 {
0085 if (c == '\n')
0086 continue;
0087 if (c == '\r')
0088 return true;
0089 strLine += c;
0090 if (strLine.size() >= 9000)
0091 return true;
0092 }
0093 else if (nBytes <= 0)
0094 {
0095 if (fShutdown)
0096 return false;
0097 if (nBytes < 0)
0098 {
0099 int nErr = WSAGetLastError();
0100 if (nErr == WSAEMSGSIZE)
0101 continue;
0102 if (nErr == WSAEWOULDBLOCK || nErr == WSAEINTR || nErr == WSAEINPROGRESS)
0103 {
0104 Sleep(10);
0105 continue;
0106 }
0107 }
0108 if (!strLine.empty())
0109 return true;
0110 if (nBytes == 0)
0111 {
0112
0113 printf("socket closed\n");
0114 return false;
0115 }
0116 else
0117 {
0118
0119 int nErr = WSAGetLastError();
0120 printf("recv failed: %d\n", nErr);
0121 return false;
0122 }
0123 }
0124 }
0125 }
0126
0127 bool RecvLineIRC(SOCKET hSocket, string& strLine)
0128 {
0129 loop
0130 {
0131 bool fRet = RecvLine(hSocket, strLine);
0132 if (fRet)
0133 {
0134 if (fShutdown)
0135 return false;
0136 vector<string> vWords;
0137 ParseString(strLine, ' ', vWords);
0138 if (vWords.size() >= 1 && vWords[0] == "PING")
0139 {
0140 strLine[1] = 'O';
0141 strLine += '\r';
0142 Send(hSocket, strLine.c_str());
0143 continue;
0144 }
0145 }
0146 return fRet;
0147 }
0148 }
0149
0150 int RecvUntil(SOCKET hSocket, const char* psz1, const char* psz2=NULL, const char* psz3=NULL, const char* psz4=NULL)
0151 {
0152 loop
0153 {
0154 string strLine;
0155 strLine.reserve(10000);
0156 if (!RecvLineIRC(hSocket, strLine))
0157 return 0;
0158 printf("IRC %s\n", strLine.c_str());
0159 if (psz1 && strLine.find(psz1) != -1)
0160 return 1;
0161 if (psz2 && strLine.find(psz2) != -1)
0162 return 2;
0163 if (psz3 && strLine.find(psz3) != -1)
0164 return 3;
0165 if (psz4 && strLine.find(psz4) != -1)
0166 return 4;
0167 }
0168 }
0169
0170 bool Wait(int nSeconds)
0171 {
0172 if (fShutdown)
0173 return false;
0174 printf("IRC waiting %d seconds to reconnect\n", nSeconds);
0175 for (int i = 0; i < nSeconds; i++)
0176 {
0177 if (fShutdown)
0178 return false;
0179 Sleep(1000);
0180 }
0181 return true;
0182 }
0183
0184 bool RecvCodeLine(SOCKET hSocket, const char* psz1, string& strRet)
0185 {
0186 strRet.clear();
0187 loop
0188 {
0189 string strLine;
0190 if (!RecvLineIRC(hSocket, strLine))
0191 return false;
0192
0193 vector<string> vWords;
0194 ParseString(strLine, ' ', vWords);
0195 if (vWords.size() < 2)
0196 continue;
0197
0198 if (vWords[1] == psz1)
0199 {
0200 printf("IRC %s\n", strLine.c_str());
0201 strRet = strLine;
0202 return true;
0203 }
0204 }
0205 }
0206
0207 bool GetIPFromIRC(SOCKET hSocket, string strMyName, unsigned int& ipRet)
0208 {
0209 Send(hSocket, strprintf("USERHOST %s\r", strMyName.c_str()).c_str());
0210
0211 string strLine;
0212 if (!RecvCodeLine(hSocket, "302", strLine))
0213 return false;
0214
0215 vector<string> vWords;
0216 ParseString(strLine, ' ', vWords);
0217 if (vWords.size() < 4)
0218 return false;
0219
0220 string str = vWords[3];
0221 if (str.rfind("@") == string::npos)
0222 return false;
0223 string strHost = str.substr(str.rfind("@")+1);
0224
0225
0226
0227 printf("GetIPFromIRC() got userhost %s\n", strHost.c_str());
0228 if (fUseProxy)
0229 return false;
0230 CAddress addr(strHost, 0, true);
0231 if (!addr.IsValid())
0232 return false;
0233 ipRet = addr.ip;
0234
0235 return true;
0236 }
0237
0238
0239
0240 void ThreadIRCSeed(void* parg)
0241 {
0242 IMPLEMENT_RANDOMIZE_STACK(ThreadIRCSeed(parg));
0243 try
0244 {
0245 ThreadIRCSeed2(parg);
0246 }
0247 catch (std::exception& e) {
0248 PrintExceptionContinue(&e, "ThreadIRCSeed()");
0249 } catch (...) {
0250 PrintExceptionContinue(NULL, "ThreadIRCSeed()");
0251 }
0252 printf("ThreadIRCSeed exiting\n");
0253 }
0254
0255 void ThreadIRCSeed2(void* parg)
0256 {
0257
0258 if (mapArgs.count("-connect") || fNoListen)
0259 return;
0260
0261 if (GetBoolArg("-noirc"))
0262 return;
0263 printf("ThreadIRCSeed started\n");
0264 int nErrorWait = 10;
0265 int nRetryWait = 10;
0266 bool fNameInUse = false;
0267
0268 while (!fShutdown)
0269 {
0270 CAddress addrConnect("92.243.23.21", 6667);
0271
0272 CAddress addrIRC("irc.lfnet.org", 6667, true);
0273 if (addrIRC.IsValid())
0274 addrConnect = addrIRC;
0275
0276 SOCKET hSocket;
0277 if (!ConnectSocket(addrConnect, hSocket))
0278 {
0279 printf("IRC connect failed\n");
0280 nErrorWait = nErrorWait * 11 / 10;
0281 if (Wait(nErrorWait += 60))
0282 continue;
0283 else
0284 return;
0285 }
0286
0287 if (!RecvUntil(hSocket, "Found your hostname", "using your IP address instead", "Couldn't look up your hostname", "ignoring hostname"))
0288 {
0289 closesocket(hSocket);
0290 hSocket = INVALID_SOCKET;
0291 nErrorWait = nErrorWait * 11 / 10;
0292 if (Wait(nErrorWait += 60))
0293 continue;
0294 else
0295 return;
0296 }
0297
0298 string strMyName;
0299 if (addrLocalHost.IsRoutable() && !fUseProxy && !fNameInUse)
0300 strMyName = EncodeAddress(addrLocalHost);
0301 else
0302 strMyName = strprintf("x%u", GetRand(1000000000));
0303
0304 Send(hSocket, strprintf("NICK %s\r", strMyName.c_str()).c_str());
0305 Send(hSocket, strprintf("USER %s 8 * : %s\r", strMyName.c_str(), strMyName.c_str()).c_str());
0306
0307 int nRet = RecvUntil(hSocket, " 004 ", " 433 ");
0308 if (nRet != 1)
0309 {
0310 closesocket(hSocket);
0311 hSocket = INVALID_SOCKET;
0312 if (nRet == 2)
0313 {
0314 printf("IRC name already in use\n");
0315 fNameInUse = true;
0316 Wait(10);
0317 continue;
0318 }
0319 nErrorWait = nErrorWait * 11 / 10;
0320 if (Wait(nErrorWait += 60))
0321 continue;
0322 else
0323 return;
0324 }
0325 Sleep(500);
0326
0327
0328 CAddress addrFromIRC;
0329 if (GetIPFromIRC(hSocket, strMyName, addrFromIRC.ip))
0330 {
0331 printf("GetIPFromIRC() returned %s\n", addrFromIRC.ToStringIP().c_str());
0332 if (!fUseProxy && addrFromIRC.IsRoutable())
0333 {
0334
0335 fGotExternalIP = true;
0336 addrLocalHost.ip = addrFromIRC.ip;
0337 strMyName = EncodeAddress(addrLocalHost);
0338 Send(hSocket, strprintf("NICK %s\r", strMyName.c_str()).c_str());
0339 }
0340 }
0341
0342 if (fTestNet) {
0343 Send(hSocket, "JOIN #bitcoinTEST\r");
0344 Send(hSocket, "WHO #bitcoinTEST\r");
0345 } else {
0346
0347 int channel_number = GetRandInt(100);
0348 Send(hSocket, strprintf("JOIN #bitcoin%02d\r", channel_number).c_str());
0349 Send(hSocket, strprintf("WHO #bitcoin%02d\r", channel_number).c_str());
0350 }
0351
0352 int64 nStart = GetTime();
0353 string strLine;
0354 strLine.reserve(10000);
0355 while (!fShutdown && RecvLineIRC(hSocket, strLine))
0356 {
0357 if (strLine.empty() || strLine.size() > 900 || strLine[0] != ':')
0358 continue;
0359
0360 vector<string> vWords;
0361 ParseString(strLine, ' ', vWords);
0362 if (vWords.size() < 2)
0363 continue;
0364
0365 char pszName[10000];
0366 pszName[0] = '\0';
0367
0368 if (vWords[1] == "352" && vWords.size() >= 8)
0369 {
0370
0371
0372 strlcpy(pszName, vWords[7].c_str(), sizeof(pszName));
0373 printf("IRC got who\n");
0374 }
0375
0376 if (vWords[1] == "JOIN" && vWords[0].size() > 1)
0377 {
0378
0379 strlcpy(pszName, vWords[0].c_str() + 1, sizeof(pszName));
0380 if (strchr(pszName, '!'))
0381 *strchr(pszName, '!') = '\0';
0382 printf("IRC got join\n");
0383 }
0384
0385 if (pszName[0] == 'u')
0386 {
0387 CAddress addr;
0388 if (DecodeAddress(pszName, addr))
0389 {
0390 addr.nTime = GetAdjustedTime();
0391 if (AddAddress(addr, 51 * 60))
0392 printf("IRC got new address: %s\n", addr.ToString().c_str());
0393 nGotIRCAddresses++;
0394 }
0395 else
0396 {
0397 printf("IRC decode failed\n");
0398 }
0399 }
0400 }
0401 closesocket(hSocket);
0402 hSocket = INVALID_SOCKET;
0403
0404 if (GetTime() - nStart > 20 * 60)
0405 {
0406 nErrorWait /= 3;
0407 nRetryWait /= 3;
0408 }
0409
0410 nRetryWait = nRetryWait * 11 / 10;
0411 if (!Wait(nRetryWait += 60))
0412 return;
0413 }
0414 }
0415
0416
0417
0418
0419
0420
0421
0422
0423
0424
0425 #ifdef TEST
0426 int main(int argc, char *argv[])
0427 {
0428 WSADATA wsadata;
0429 if (WSAStartup(MAKEWORD(2,2), &wsadata) != NO_ERROR)
0430 {
0431 printf("Error at WSAStartup()\n");
0432 return false;
0433 }
0434
0435 ThreadIRCSeed(NULL);
0436
0437 WSACleanup();
0438 return 0;
0439 }
0440 #endif