/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd_win32wrapper.h" #include "inspircd.h" #include "configreader.h" #include #include #include using namespace std; #ifndef INADDR_NONE #define INADDR_NONE 0xffffffff #endif /* This MUST remain static and delcared outside the class, so that WriteProcessMemory can reference it properly */ static DWORD owner_processid = 0; int inet_aton(const char *cp, struct in_addr *addr) { unsigned long ip = inet_addr(cp); addr->s_addr = ip; return (addr->s_addr == INADDR_NONE) ? 0 : 1; } const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt) { if (af == AF_INET) { struct sockaddr_in in; memset(&in, 0, sizeof(in)); in.sin_family = AF_INET; memcpy(&in.sin_addr, src, sizeof(struct in_addr)); getnameinfo((struct sockaddr *)&in, sizeof(struct sockaddr_in), dst, cnt, NULL, 0, NI_NUMERICHOST); return dst; } else if (af == AF_INET6) { struct sockaddr_in6 in; memset(&in, 0, sizeof(in)); in.sin6_family = AF_INET6; memcpy(&in.sin6_addr, src, sizeof(struct in_addr6)); getnameinfo((struct sockaddr *)&in, sizeof(struct sockaddr_in6), dst, cnt, NULL, 0, NI_NUMERICHOST); return dst; } return NULL; } int geteuid() { return 1; } int inet_pton(int af, const char *src, void *dst) { sockaddr_in sa; int len = sizeof(SOCKADDR); int rv = WSAStringToAddress((LPSTR)src, af, NULL, (LPSOCKADDR)&sa, &len); if(rv >= 0) { if(WSAGetLastError() == 10022) // Invalid Argument rv = 0; else rv = 1; } memcpy(dst, &sa.sin_addr, sizeof(struct in_addr)); return rv; } char * strtok_r(char *_String, const char *_Control, char **_Context) { unsigned char *str; const unsigned char *ctl = (const unsigned char*)_Control; unsigned char map[32]; if (_Context == 0 || !_Control) return 0; if (!(_String != NULL || *_Context != NULL)) return 0; memset(map, 0, 32); do { map[*ctl >> 3] |= (1 << (*ctl & 7)); } while (*ctl++); /* If string is NULL, set str to the saved * pointer (i.e., continue breaking tokens out of the string * from the last strtok call) */ if (_String != NULL) { str = (unsigned char*)_String; } else { str = (unsigned char*)*_Context; } /* Find beginning of token (skip over leading delimiters). Note that * there is no token iff this loop sets str to point to the terminal * null (*str == 0) */ while ((map[*str >> 3] & (1 << (*str & 7))) && *str != 0) { str++; } _String = (char*)str; /* Find the end of the token. If it is not the end of the string, * put a null there. */ for ( ; *str != 0 ; str++ ) { if (map[*str >> 3] & (1 << (*str & 7))) { *str++ = 0; break; } } /* Update context */ *_Context = (char*)str; /* Determine if a token has been found. */ if (_String == (char*)str) { return NULL; } else { return _String; } } void setcolor(int color_code) { SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), color_code); } DIR * opendir(const char * path) { std::string search_path = string(path) + "\\*.*"; WIN32_FIND_DATA fd; HANDLE f = FindFirstFile(search_path.c_str(), &fd); if (f != INVALID_HANDLE_VALUE) { DIR * d = new DIR; memcpy(&d->find_data, &fd, sizeof(WIN32_FIND_DATA)); d->find_handle = f; d->first = true; return d; } else { return 0; } } dirent * readdir(DIR * handle) { if (handle->first) handle->first = false; else { if (!FindNextFile(handle->find_handle, &handle->find_data)) return 0; } strncpy(handle->dirent_pointer.d_name, handle->find_data.cFileName, MAX_PATH); return &handle->dirent_pointer; } void closedir(DIR * handle) { FindClose(handle->find_handle); delete handle; } const char * dlerror() { static char errormessage[500]; DWORD error = GetLastError(); SetLastError(0); if (error == 0) return 0; FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, 0, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)errormessage, 500, 0); return errormessage; } #define TRED FOREGROUND_RED | FOREGROUND_INTENSITY #define TGREEN FOREGROUND_GREEN | FOREGROUND_INTENSITY #define TYELLOW FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY #define TNORMAL FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE #define TWHITE TNORMAL | FOREGROUND_INTENSITY #define TBLUE FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_INTENSITY /* Handles colors in printf */ int printf_c(const char * format, ...) { // Better hope we're not multithreaded, otherwise we'll have chickens crossing the road other side to get the to :P static char message[MAXBUF]; static char temp[MAXBUF]; int color1, color2; /* parse arguments */ va_list ap; va_start(ap, format); vsnprintf(message, 500, format, ap); va_end(ap); /* search for unix-style escape sequences */ int t; int c = 0; const char * p = message; while (*p != 0) { if (*p == '\033') { // Escape sequence -> copy into the temp buffer, and parse the color. p++; t = 0; while ((*p) && (*p != 'm')) { temp[t++] = *p; ++p; } temp[t] = 0; p++; if (*temp == '[') { if (sscanf(temp, "[%u;%u", &color1, &color2) == 2) { switch(color2) { case 32: // Green SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_GREEN | FOREGROUND_INTENSITY); // Yellow break; default: // Unknown // White SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY); break; } } else { switch (*(temp+1)) { case '0': // Returning to normal colour. SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE); break; case '1': // White SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), TWHITE); break; default: char message[50]; sprintf(message, "Unknown color code: %s", temp); MessageBox(0, message, message, MB_OK); break; } } } } putchar(*p); ++c; ++p; } return c; } int arg_counter = 1; char optarg[514]; int getopt_long_only(int ___argc, char *const *___argv, const char *__shortopts, const struct option *__longopts, int *__longind) { // burlex todo: handle the shortops, at the moment it only works with longopts. if (___argc == 1 || arg_counter == ___argc) // No arguments (apart from filename) return -1; const char * opt = ___argv[arg_counter]; int return_val = 0; // if we're not an option, return an error. if (strnicmp(opt, "--", 2) != 0) return 1; else opt += 2; // parse argument list int i = 0; for (; __longopts[i].name != 0; ++i) { if (!strnicmp(__longopts[i].name, opt, strlen(__longopts[i].name))) { // woot, found a valid argument =) char * par = 0; if ((arg_counter + 1) != ___argc) { // grab the parameter from the next argument (if its not another argument) if (strnicmp(___argv[arg_counter+1], "--", 2) != 0) { arg_counter++; // Trash this next argument, we won't be needing it. par = ___argv[arg_counter]; } } // increment the argument for next time arg_counter++; // determine action based on type if (__longopts[i].has_arg == required_argument && !par) { // parameter missing and its a required parameter option return 1; } // store argument in optarg if (par) strncpy(optarg, par, 514); if (__longopts[i].flag != 0) { // this is a variable, we have to set it if this argument is found. *__longopts[i].flag = 1; return 0; } else { if (__longopts[i].val == -1 || par == 0) return 1; return __longopts[i].val; } break; } } // return 1 (invalid argument) return 1; } /* IPC Messages */ #define IPC_MESSAGE_REHASH 1 #define IPC_MESSAGE_DIE 2 #define IPC_MESSAGE_RESTART 3 IPC::IPC(InspIRCd* Srv) : Instance(Srv) { static DWORD buflen = 1024; static const char * pipename = "\\\\.\\mailslot\\Inspircd"; hIPCPipe = CreateMailslot(pipename, buflen, 0, 0); if (hIPCPipe == INVALID_HANDLE_VALUE) printf("IPC Pipe could not be created. Are you sure you didn't start InspIRCd twice?\n"); } void IPC::Check() { if (hIPCPipe == INVALID_HANDLE_VALUE) return; DWORD bytes; DWORD action; BOOL res = ReadFile(hIPCPipe, &action, sizeof(DWORD), &bytes, 0); if (!res) { if (GetLastError() != ERROR_SEM_TIMEOUT) Instance->Log(DEFAULT, "IPC Pipe Error %u: %s", GetLastError(), dlerror()); return; } switch (action) { case IPC_MESSAGE_REHASH: Instance->Rehash(); break; case IPC_MESSAGE_DIE: Instance->Exit(0); break; case IPC_MESSAGE_RESTART: Instance->Restart("IPC_MESSAGE_RESTART received by mailslot."); break; } } IPC::~IPC() { CloseHandle(hIPCPipe); } /* These three functions were created from looking at how ares does it * (...and they look far tidier in C++) */ /* Get active nameserver */ bool GetNameServer(HKEY regkey, const char *key, char* &output) { DWORD size = 0; DWORD result = RegQueryValueEx(regkey, key, 0, NULL, NULL, &size); if (((result != ERROR_SUCCESS) && (result != ERROR_MORE_DATA)) || (!size)) return false; output = new char[size+1]; if ((RegQueryValueEx(regkey, key, 0, NULL, (LPBYTE)output, &size) != ERROR_SUCCESS) || (!*output)) { delete output; return false; } return true; } /* Check a network interface for its nameserver */ bool GetInterface(HKEY regkey, const char *key, char* &output) { char buf[39]; DWORD size = 39; int idx = 0; HKEY top; while (RegEnumKeyEx(regkey, idx++, buf, &size, 0, NULL, NULL, NULL) != ERROR_NO_MORE_ITEMS) { size = 39; if (RegOpenKeyEx(regkey, buf, 0, KEY_QUERY_VALUE, &top) != ERROR_SUCCESS) continue; int rc = GetNameServer(top, key, output); RegCloseKey(top); if (rc) return true; } return false; } std::string FindNameServerWin() { std::string returnval = "127.0.0.1"; HKEY top, key; char* dns = NULL; /* Lets see if the correct registry hive and tree exist */ if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\Tcpip\\Parameters", 0, KEY_READ, &top) == ERROR_SUCCESS) { /* If they do, attempt to get the nameserver name */ RegOpenKeyEx(top, "Interfaces", 0, KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &key); if ((GetNameServer(top, "NameServer", dns)) || (GetNameServer(top, "DhcpNameServer", dns)) || (GetInterface(key, "NameServer", dns)) || (GetInterface(key, "DhcpNameServer", dns))) { if (dns) { returnval = dns; delete dns; } } RegCloseKey(key); RegCloseKey(top); } return returnval; } void ClearConsole() { COORD coordScreen = { 0, 0 }; /* here's where we'll home the cursor */ HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE); DWORD cCharsWritten; CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ DWORD dwConSize; /* number of character cells in the current buffer */ /* get the number of character cells in the current buffer */ if (GetConsoleScreenBufferInfo( hConsole, &csbi )) { dwConSize = csbi.dwSize.X * csbi.dwSize.Y; /* fill the entire screen with blanks */ if (FillConsoleOutputCharacter( hConsole, (TCHAR) ' ', dwConSize, coordScreen, &cCharsWritten )) { /* get the current text attribute */ if (GetConsoleScreenBufferInfo( hConsole, &csbi )) { /* now set the buffer's attributes accordingly */ if (FillConsoleOutputAttribute( hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten )) { /* put the cursor at (0, 0) */ SetConsoleCursorPosition( hConsole, coordScreen ); } } } } return; } /* Many inspircd classes contain function pointers/functors which can be changed to point at platform specific implementations * of code. This function repoints these pointers and functors so that calls are windows specific. */ void ChangeWindowsSpecificPointers(InspIRCd* Instance) { Instance->Log(DEBUG,"Changing to windows specific pointer and functor set"); Instance->Config->DNSServerValidator = &ValidateWindowsDnsServer; } DWORD WindowsForkStart(InspIRCd* Instance) { /* Windows implementation of fork() :P */ if (owner_processid) return 0; char module[MAX_PATH]; if(!GetModuleFileName(NULL, module, MAX_PATH)) { printf("GetModuleFileName() failed.\n"); return false; } STARTUPINFO startupinfo; PROCESS_INFORMATION procinfo; ZeroMemory(&startupinfo, sizeof(STARTUPINFO)); ZeroMemory(&procinfo, sizeof(PROCESS_INFORMATION)); // Fill in the startup info struct GetStartupInfo(&startupinfo); /* Default creation flags create the processes suspended */ DWORD startupflags = CREATE_SUSPENDED; /* On windows 2003/XP and above, we can use the value * CREATE_PRESERVE_CODE_AUTHZ_LEVEL which gives more access * to the process which we may require on these operating systems. */ OSVERSIONINFO vi; vi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); GetVersionEx(&vi); if ((vi.dwMajorVersion >= 5) && (vi.dwMinorVersion > 0)) startupflags |= CREATE_PRESERVE_CODE_AUTHZ_LEVEL; // Launch our "forked" process. BOOL bSuccess = CreateProcess ( module, // Module (exe) filename strdup(GetCommandLine()), // Command line (exe plus parameters from the OS) // NOTE: We cannot return the direct value of the // GetCommandLine function here, as the pointer is // passed straight to the child process, and will be // invalid once we exit as it goes out of context. // strdup() seems ok, though. 0, // PROCESS_SECURITY_ATTRIBUTES 0, // THREAD_SECURITY_ATTRIBUTES TRUE, // We went to inherit handles. startupflags, // Allow us full access to the process and suspend it. 0, // ENVIRONMENT 0, // CURRENT_DIRECTORY &startupinfo, // startup info &procinfo); // process info if(!bSuccess) { printf("CreateProcess() error: %s\n", dlerror()); return false; } // Set the owner process id in the target process. SIZE_T written = 0; DWORD pid = GetCurrentProcessId(); if(!WriteProcessMemory(procinfo.hProcess, &owner_processid, &pid, sizeof(DWORD), &written) || written != sizeof(DWORD)) { printf("WriteProcessMemory() failed: %s\n", dlerror()); return false; } // Resume the other thread (let it start) ResumeThread(procinfo.hThread); // Wait for the new process to kill us. If there is some error, the new process will end and we will end up at the next line. WaitForSingleObject(procinfo.hProcess, INFINITE); // If we hit this it means startup failed, default to 14 if this fails. DWORD ExitCode = 14; GetExitCodeProcess(procinfo.hProcess, &ExitCode); CloseHandle(procinfo.hThread); CloseHandle(procinfo.hProcess); return ExitCode; } void WindowsForkKillOwner(InspIRCd * Instance) { HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, owner_processid); if(!hProcess || !owner_processid) { printf("Could not open process id %u: %s.\n", owner_processid, dlerror()); Instance->Exit(14); } // die die die if(!TerminateProcess(hProcess, 0)) { printf("Could not TerminateProcess(): %s\n", dlerror()); Instance->Exit(14); } CloseHandle(hProcess); } bool ValidateWindowsDnsServer(ServerConfig* conf, const char* tag, const char* value, ValueItem &data) { if (!*(data.GetString())) { std::string nameserver; conf->GetInstance()->Log(DEFAULT,"WARNING: not defined, attempting to find working server in the registry..."); nameserver = FindNameServerWin(); /* Windows stacks multiple nameservers in one registry key, seperated by commas. * Spotted by Cataclysm. */ if (nameserver.find(',') != std::string::npos) nameserver = nameserver.substr(0, nameserver.find(',')); data.Set(nameserver.c_str()); conf->GetInstance()->Log(DEFAULT," set to '%s' as first active resolver in registry.", nameserver.c_str()); } return true; }