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inspircd/win/inspircd_win32wrapper.cpp
brain afe99da316 Base stuff for named pipe IPC 
git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@9910 e03df62e-2008-0410-955e-edbf42e46eb7
2008-06-15 16:21:09 +00:00

642 lines
17 KiB
C++
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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2008 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 <string>
#include <errno.h>
#include <assert.h>
#pragma comment(lib, "winmm.lib")
using namespace std;
#ifndef INADDR_NONE
#define INADDR_NONE 0xffffffff
#endif
#include <mmsystem.h>
/* 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];
// 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;
}
/*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->Logs->Log("win32",DEFAULT, "IPC Pipe Error %u: %s", GetLastError(), dlerror());
return;
}
switch (action)
{
case IPC_MESSAGE_REHASH:
Instance->Rehash("due to IPC message");
break;
case IPC_MESSAGE_DIE:
Instance->Exit(0);
break;
case IPC_MESSAGE_RESTART:
Instance->Restart("IPC_MESSAGE_RESTART received by mailslot.");
break;
}
}*/
/* 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->Logs->Log("win32",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()->Logs->Log("win32",DEFAULT,"WARNING: <dns:server> 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(','));
/* Just to be FUCKING AKWARD, windows fister... err i mean vista...
* seperates the nameservers with spaces instead.
*/
if (nameserver.find(' ') != std::string::npos)
nameserver = nameserver.substr(0, nameserver.find(' '));
data.Set(nameserver.c_str());
conf->GetInstance()->Logs->Log("win32",DEFAULT,"<dns:server> set to '%s' as first active resolver in registry.", nameserver.c_str());
}
return true;
}
int gettimeofday(struct timeval * tv, void * tz)
{
if(tv == NULL)
return -1;
DWORD mstime = timeGetTime();
tv->tv_sec = time(NULL);
tv->tv_usec = (mstime - (tv->tv_sec * 1000)) * 1000;
return 0;
}
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