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[user/henk/code/inspircd.git] / src / inspircd.cpp
index 52aeddf04bcb5fe7abd6620688b2da806553001b..632319ea366a56cbbd3ca371cac870d04f588927 100644 (file)
 #include "inspircd.h"
 #include "configreader.h"
 #include <signal.h>
-#ifndef WIN32
 
+#ifndef WIN32
 #include <dirent.h>
 #include <unistd.h>
 #include <sys/resource.h>
-
+#include <dlfcn.h>
+#include <getopt.h>
 /* This is just to be completely certain that the change which fixed getrusage on RH7 doesn't break anything else -- Om */  
 #ifndef RUSAGE_SELF
 #define RUSAGE_SELF 0
 #endif
-
 #endif
+
 #include <exception>
 #include <fstream>
 #include "modules.h"
 #include "command_parse.h"
 #include "exitcodes.h"
 
-#ifndef WIN32
-#include <dlfcn.h>
-#include <getopt.h>
-#else
-#include <conio.h>
-bool g_starting = true;
+#ifdef WIN32
+
+/* This MUST remain static and delcared outside the class, so that WriteProcessMemory can reference it properly */
+static DWORD owner_processid = 0;
+
+DWORD WindowsForkStart(InspIRCd * Instance)
+{
+       /* Windows implementation of fork() :P */
+
+       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);
+}
+
 #endif
 
 using irc::sockets::NonBlocking;
@@ -63,7 +160,7 @@ const char* ExitCodes[] =
                "Internal error", /* 3 */
                "Config file error", /* 4 */
                "Logfile error", /* 5 */
-               "Fork failed", /* 6 */
+               "POSIX fork failed", /* 6 */
                "Bad commandline parameters", /* 7 */
                "No ports could be bound", /* 8 */
                "Can't write PID file", /* 9 */
@@ -71,7 +168,7 @@ const char* ExitCodes[] =
                "Refusing to start up as root", /* 11 */
                "Found a <die> tag!", /* 12 */
                "Couldn't load module on startup", /* 13 */
-               "", /* 14 */
+               "Could not create windows forked process", /* 14 */
                "Received SIGTERM", /* 15 */
 };
 
@@ -201,7 +298,7 @@ void InspIRCd::Start()
 {
        printf_c("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
        printf_c("(C) InspIRCd Development Team.\033[0m\n\n");
-       printf_c("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey\033[0m\n");
+       printf_c("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey, Burlex\033[0m\n");
        printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
 }
 
@@ -276,6 +373,7 @@ void InspIRCd::QuickExit(int status)
 bool InspIRCd::DaemonSeed()
 {
 #ifdef WINDOWS
+       printf_c("InspIRCd Process ID: \033[1;32m%lu\033[0m\n", GetCurrentProcessId());
        return true;
 #else
        signal(SIGTERM, InspIRCd::QuickExit);
@@ -354,12 +452,6 @@ std::string InspIRCd::GetRevision()
 InspIRCd::InspIRCd(int argc, char** argv)
        : ModCount(-1), GlobalCulls(this)
 {
-#ifdef WINDOWS
-       ClearConsole();
-       WSADATA wsadata;
-       WSAStartup(MAKEWORD(2,0), &wsadata);
-#endif
-
        int found_ports = 0;
        FailedPortList pl;
        int do_version = 0, do_nofork = 0, do_debug = 0, do_nolog = 0, do_root = 0;    /* flag variables */
@@ -395,12 +487,12 @@ InspIRCd::InspIRCd(int argc, char** argv)
 
        struct option longopts[] =
        {
-               { "nofork",             no_argument,            &do_nofork,             1       },
-               { "logfile",    required_argument,      NULL,                   'f'     },
-               { "config",             required_argument,      NULL,                   'c'     },
-               { "debug",              no_argument,            &do_debug,              1       },
-               { "nolog",              no_argument,            &do_nolog,              1       },
-               { "runasroot",  no_argument,            &do_root,               1       },
+               { "nofork",     no_argument,            &do_nofork,     1       },
+               { "logfile",    required_argument,      NULL,           'f'     },
+               { "config",     required_argument,      NULL,           'c'     },
+               { "debug",      no_argument,            &do_debug,      1       },
+               { "nolog",      no_argument,            &do_nolog,      1       },
+               { "runasroot",  no_argument,            &do_root,       1       },
                { "version",    no_argument,            &do_version,    1       },
                { 0, 0, 0, 0 }
        };
@@ -412,12 +504,10 @@ InspIRCd::InspIRCd(int argc, char** argv)
                        case 'f':
                                /* Log filename was set */
                                strlcpy(LogFileName, optarg, MAXBUF);
-                               printf("LOG: Setting logfile to %s\n", LogFileName);
                        break;
                        case 'c':
                                /* Config filename was set */
                                strlcpy(ConfigFileName, optarg, MAXBUF);
-                               printf("CONFIG: Setting config file to %s\n", ConfigFileName);
                        break;
                        case 0:
                                /* getopt_long_only() set an int variable, just keep going */
@@ -436,6 +526,21 @@ InspIRCd::InspIRCd(int argc, char** argv)
                Exit(EXIT_STATUS_NOERROR);
        }
 
+#ifdef WIN32
+
+       // Handle forking
+       if(!do_nofork && !owner_processid)
+       {
+               DWORD ExitCode = WindowsForkStart(this);
+               if(ExitCode)
+                       Exit(ExitCode);
+       }
+
+       // Set up winsock
+       WSADATA wsadata;
+       WSAStartup(MAKEWORD(2,0), &wsadata);
+
+#endif
        if (!ServerConfig::FileExists(this->ConfigFileName))
        {
                printf("ERROR: Cannot open config file: %s\nExiting...\n", this->ConfigFileName);
@@ -559,22 +664,18 @@ InspIRCd::InspIRCd(int argc, char** argv)
                        Log(DEFAULT,"Keeping pseudo-tty open as we are running in the foreground.");
                }
        }
+#else
+       InitIPC();
+       if(!Config->nofork)
+       {
+               WindowsForkKillOwner(this);
+               FreeConsole();
+       }
 #endif
        printf("\nInspIRCd is now running!\n");
        Log(DEFAULT,"Startup complete.");
 
        this->WritePID(Config->PID);
-
-#ifdef WINDOWS
-       InitIPC();
-       
-       g_starting = false;
-
-       // remove the console if in no-fork
-       if(!Config->nofork)
-               FreeConsole();
-
-#endif
 }
 
 std::string InspIRCd::GetVersionString()
@@ -1137,7 +1238,7 @@ void FileLogger::WriteLogLine(const std::string &line)
        {
                int written = fprintf(log,"%s",buffer.c_str());
 #ifdef WINDOWS
-               buffer = "";
+               buffer.clear();
 #else
                if ((written >= 0) && (written < (int)buffer.length()))
                {
@@ -1152,7 +1253,7 @@ void FileLogger::WriteLogLine(const std::string &line)
                else
                {
                        /* Wrote the whole buffer, and no need for write callback */
-                       buffer = "";
+                       buffer.clear();
                }
 #endif
                if (writeops++ % 20)
@@ -1183,7 +1284,7 @@ void FileLogger::Close()
                fclose(log);
        }
 
-       buffer = "";
+       buffer.clear();
 }
 
 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
@@ -1192,7 +1293,7 @@ FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Insta
        {
                irc::sockets::NonBlocking(fileno(log));
                this->SetFd(fileno(log));
-               buffer = "";
+               buffer.clear();
        }
 }