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/* +------------------------------------+
* | 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.h"
#include "configreader.h"
#include <signal.h>
#ifndef WIN32
#include <dirent.h>
#include <unistd.h>
#include <sys/resource.h>
#include <dlfcn.h>
#include <getopt.h>
/* Some systems don't define RUSAGE_SELF. This should fix them. */
#ifndef RUSAGE_SELF
#define RUSAGE_SELF 0
#endif
#endif
#include <exception>
#include <fstream>
#include "modules.h"
#include "mode.h"
#include "xline.h"
#include "socketengine.h"
#include "inspircd_se_config.h"
#include "socket.h"
#include "typedefs.h"
#include "command_parse.h"
#include "exitcodes.h"
#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;
using irc::sockets::Blocking;
using irc::sockets::insp_ntoa;
using irc::sockets::insp_inaddr;
using irc::sockets::insp_sockaddr;
InspIRCd* SI = NULL;
/* Burlex: Moved from exitcodes.h -- due to duplicate symbols */
const char* ExitCodes[] =
{
"No error", /* 0 */
"DIE command", /* 1 */
"execv() failed", /* 2 */
"Internal error", /* 3 */
"Config file error", /* 4 */
"Logfile error", /* 5 */
"POSIX fork failed", /* 6 */
"Bad commandline parameters", /* 7 */
"No ports could be bound", /* 8 */
"Can't write PID file", /* 9 */
"SocketEngine could not initialize", /* 10 */
"Refusing to start up as root", /* 11 */
"Found a <die> tag!", /* 12 */
"Couldn't load module on startup", /* 13 */
"Could not create windows forked process", /* 14 */
"Received SIGTERM", /* 15 */
};
void InspIRCd::AddServerName(const std::string &servername)
{
servernamelist::iterator itr = servernames.begin();
for(; itr != servernames.end(); ++itr)
if(**itr == servername)
return;
string * ns = new string(servername);
servernames.push_back(ns);
}
const char* InspIRCd::FindServerNamePtr(const std::string &servername)
{
servernamelist::iterator itr = servernames.begin();
for(; itr != servernames.end(); ++itr)
if(**itr == servername)
return (*itr)->c_str();
servernames.push_back(new string(servername));
itr = --servernames.end();
return (*itr)->c_str();
}
bool InspIRCd::FindServerName(const std::string &servername)
{
servernamelist::iterator itr = servernames.begin();
for(; itr != servernames.end(); ++itr)
if(**itr == servername)
return true;
return false;
}
void InspIRCd::Exit(int status)
{
#ifdef WINDOWS
CloseIPC();
#endif
if (SI)
{
SI->SendError("Exiting with status " + ConvToStr(status) + " (" + std::string(ExitCodes[status]) + ")");
SI->Cleanup();
}
exit (status);
}
void InspIRCd::Cleanup()
{
std::vector<std::string> mymodnames;
int MyModCount = this->GetModuleCount();
for (unsigned int i = 0; i < Config->ports.size(); i++)
{
/* This calls the constructor and closes the listening socket */
delete Config->ports[i];
}
Config->ports.clear();
/* Close all client sockets, or the new process inherits them */
for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
{
(*i)->SetWriteError("Server shutdown");
(*i)->CloseSocket();
}
/* We do this more than once, so that any service providers get a
* chance to be unhooked by the modules using them, but then get
* a chance to be removed themsleves.
*/
for (int tries = 0; tries < 3; tries++)
{
MyModCount = this->GetModuleCount();
mymodnames.clear();
/* Unload all modules, so they get a chance to clean up their listeners */
for (int j = 0; j <= MyModCount; j++)
mymodnames.push_back(Config->module_names[j]);
for (int k = 0; k <= MyModCount; k++)
this->UnloadModule(mymodnames[k].c_str());
}
/* Close logging */
this->Logger->Close();
/* Cleanup Server Names */
for(servernamelist::iterator itr = servernames.begin(); itr != servernames.end(); ++itr)
delete (*itr);
#ifdef WINDOWS
/* WSACleanup */
WSACleanup();
#endif
}
void InspIRCd::Restart(const std::string &reason)
{
/* SendError flushes each client's queue,
* regardless of writeability state
*/
this->SendError(reason);
this->Cleanup();
/* Figure out our filename (if theyve renamed it, we're boned) */
std::string me;
#ifdef WINDOWS
char module[MAX_PATH];
if (GetModuleFileName(NULL, module, MAX_PATH))
me = module;
#else
me = Config->MyDir + "/inspircd";
#endif
if (execv(me.c_str(), Config->argv) == -1)
{
/* Will raise a SIGABRT if not trapped */
throw CoreException(std::string("Failed to execv()! error: ") + strerror(errno));
}
}
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, Burlex\033[0m\n");
printf_c("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
}
void InspIRCd::Rehash(int status)
{
SI->WriteOpers("*** Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(SI->ConfigFileName));
SI->CloseLog();
SI->OpenLog(SI->Config->argv, SI->Config->argc);
SI->RehashUsersAndChans();
FOREACH_MOD_I(SI, I_OnGarbageCollect, OnGarbageCollect());
SI->Config->Read(false,NULL);
SI->ResetMaxBans();
SI->Res->Rehash();
FOREACH_MOD_I(SI,I_OnRehash,OnRehash(NULL,""));
SI->BuildISupport();
}
void InspIRCd::ResetMaxBans()
{
for (chan_hash::const_iterator i = chanlist->begin(); i != chanlist->end(); i++)
i->second->ResetMaxBans();
}
/** Because hash_map doesnt free its buckets when we delete items (this is a 'feature')
* we must occasionally rehash the hash (yes really).
* We do this by copying the entries from the old hash to a new hash, causing all
* empty buckets to be weeded out of the hash. We dont do this on a timer, as its
* very expensive, so instead we do it when the user types /REHASH and expects a
* short delay anyway.
*/
void InspIRCd::RehashUsersAndChans()
{
user_hash* old_users = this->clientlist;
chan_hash* old_chans = this->chanlist;
this->clientlist = new user_hash();
this->chanlist = new chan_hash();
for (user_hash::const_iterator n = old_users->begin(); n != old_users->end(); n++)
this->clientlist->insert(*n);
delete old_users;
for (chan_hash::const_iterator n = old_chans->begin(); n != old_chans->end(); n++)
this->chanlist->insert(*n);
delete old_chans;
}
void InspIRCd::CloseLog()
{
this->Logger->Close();
}
void InspIRCd::SetSignals()
{
#ifndef WIN32
signal(SIGALRM, SIG_IGN);
signal(SIGHUP, InspIRCd::Rehash);
signal(SIGPIPE, SIG_IGN);
signal(SIGCHLD, SIG_IGN);
#endif
signal(SIGTERM, InspIRCd::Exit);
}
void InspIRCd::QuickExit(int status)
{
exit(0);
}
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);
int childpid;
if ((childpid = fork ()) < 0)
return false;
else if (childpid > 0)
{
/* We wait here for the child process to kill us,
* so that the shell prompt doesnt come back over
* the output.
* Sending a kill with a signal of 0 just checks
* if the child pid is still around. If theyre not,
* they threw an error and we should give up.
*/
while (kill(childpid, 0) != -1)
sleep(1);
exit(0);
}
setsid ();
umask (007);
printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
signal(SIGTERM, InspIRCd::Exit);
rlimit rl;
if (getrlimit(RLIMIT_CORE, &rl) == -1)
{
this->Log(DEFAULT,"Failed to getrlimit()!");
return false;
}
else
{
rl.rlim_cur = rl.rlim_max;
if (setrlimit(RLIMIT_CORE, &rl) == -1)
this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
}
return true;
#endif
}
void InspIRCd::WritePID(const std::string &filename)
{
std::string fname = (filename.empty() ? "inspircd.pid" : filename);
if (*(fname.begin()) != '/')
{
std::string::size_type pos;
std::string confpath = this->ConfigFileName;
if ((pos = confpath.rfind("/")) != std::string::npos)
{
/* Leaves us with just the path */
fname = confpath.substr(0, pos) + std::string("/") + fname;
}
}
std::ofstream outfile(fname.c_str());
if (outfile.is_open())
{
outfile << getpid();
outfile.close();
}
else
{
printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
Exit(EXIT_STATUS_PID);
}
}
std::string InspIRCd::GetRevision()
{
return REVISION;
}
InspIRCd::InspIRCd(int argc, char** argv)
: ModCount(-1), GlobalCulls(this)
{
int found_ports = 0;
FailedPortList pl;
int do_version = 0, do_nofork = 0, do_debug = 0, do_nolog = 0, do_root = 0; /* flag variables */
char c = 0;
modules.resize(255);
factory.resize(255);
memset(&server, 0, sizeof(server));
memset(&client, 0, sizeof(client));
this->unregistered_count = 0;
this->clientlist = new user_hash();
this->chanlist = new chan_hash();
this->Config = new ServerConfig(this);
this->Config->argv = argv;
this->Config->argc = argc;
chdir(Config->GetFullProgDir().c_str());
this->Config->opertypes.clear();
this->Config->operclass.clear();
this->SNO = new SnomaskManager(this);
this->TIME = this->OLDTIME = this->startup_time = time(NULL);
this->time_delta = 0;
this->next_call = this->TIME + 3;
srand(this->TIME);
*this->LogFileName = 0;
strlcpy(this->ConfigFileName, CONFIG_FILE, MAXBUF);
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 },
{ "version", no_argument, &do_version, 1 },
{ 0, 0, 0, 0 }
};
while ((c = getopt_long_only(argc, argv, ":f:", longopts, NULL)) != -1)
{
switch (c)
{
case 'f':
/* Log filename was set */
strlcpy(LogFileName, optarg, MAXBUF);
break;
case 'c':
/* Config filename was set */
strlcpy(ConfigFileName, optarg, MAXBUF);
break;
case 0:
/* getopt_long_only() set an int variable, just keep going */
break;
default:
/* Unknown parameter! DANGER, INTRUDER.... err.... yeah. */
printf("Usage: %s [--nofork] [--nolog] [--debug] [--logfile <filename>] [--runasroot] [--version] [--config <config>]\n", argv[0]);
Exit(EXIT_STATUS_ARGV);
break;
}
}
if (do_version)
{
printf("\n%s r%s\n", VERSION, REVISION);
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);
this->Log(DEFAULT,"Unable to open config file %s", this->ConfigFileName);
Exit(EXIT_STATUS_CONFIG);
}
this->Start();
/* Set the finished argument values */
Config->nofork = do_nofork;
Config->forcedebug = do_debug;
Config->writelog = !do_nolog;
strlcpy(Config->MyExecutable,argv[0],MAXBUF);
this->OpenLog(argv, argc);
this->stats = new serverstats();
this->Timers = new TimerManager(this);
this->Parser = new CommandParser(this);
this->XLines = new XLineManager(this);
Config->ClearStack();
Config->Read(true, NULL);
if (!do_root)
this->CheckRoot();
else
{
printf("* WARNING * WARNING * WARNING * WARNING * WARNING * \n\n");
printf("YOU ARE RUNNING INSPIRCD AS ROOT. THIS IS UNSUPPORTED\n");
printf("AND IF YOU ARE HACKED, CRACKED, SPINDLED OR MUTILATED\n");
printf("OR ANYTHING ELSE UNEXPECTED HAPPENS TO YOU OR YOUR\n");
printf("SERVER, THEN IT IS YOUR OWN FAULT. IF YOU DID NOT MEAN\n");
printf("TO START INSPIRCD AS ROOT, HIT CTRL+C NOW AND RESTART\n");
printf("THE PROGRAM AS A NORMAL USER. YOU HAVE BEEN WARNED!\n");
printf("\nInspIRCd starting in 20 seconds, ctrl+c to abort...\n");
sleep(20);
}
this->SetSignals();
if (!Config->nofork)
{
if (!this->DaemonSeed())
{
printf("ERROR: could not go into daemon mode. Shutting down.\n");
Log(DEFAULT,"ERROR: could not go into daemon mode. Shutting down.");
Exit(EXIT_STATUS_FORK);
}
}
/* Because of limitations in kqueue on freebsd, we must fork BEFORE we
* initialize the socket engine.
*/
SocketEngineFactory* SEF = new SocketEngineFactory();
SE = SEF->Create(this);
delete SEF;
this->Modes = new ModeParser(this);
this->AddServerName(Config->ServerName);
CheckDie();
int bounditems = BindPorts(true, found_ports, pl);
for(int t = 0; t < 255; t++)
Config->global_implementation[t] = 0;
memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
printf("\n");
this->Res = new DNS(this);
this->LoadAllModules();
/* Just in case no modules were loaded - fix for bug #101 */
this->BuildISupport();
InitializeDisabledCommands(Config->DisabledCommands, this);
if ((Config->ports.size() == 0) && (found_ports > 0))
{
printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
Log(DEFAULT,"ERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?");
Exit(EXIT_STATUS_BIND);
}
if (Config->ports.size() != (unsigned int)found_ports)
{
printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %d of %d client ports bound.\n\n", bounditems, found_ports);
printf("The following port(s) failed to bind:\n");
int j = 1;
for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
{
printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
}
}
#ifndef WINDOWS
if (!Config->nofork)
{
if (kill(getppid(), SIGTERM) == -1)
{
printf("Error killing parent process: %s\n",strerror(errno));
Log(DEFAULT,"Error killing parent process: %s",strerror(errno));
}
}
if (isatty(0) && isatty(1) && isatty(2))
{
/* We didn't start from a TTY, we must have started from a background process -
* e.g. we are restarting, or being launched by cron. Dont kill parent, and dont
* close stdin/stdout
*/
if (!do_nofork)
{
fclose(stdin);
fclose(stderr);
fclose(stdout);
}
else
{
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);
}
std::string InspIRCd::GetVersionString()
{
char versiondata[MAXBUF];
char dnsengine[] = "singlethread-object";
if (*Config->CustomVersion)
{
snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
}
else
{
snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%s,%s,%s]",VERSION,Config->ServerName,SYSTEM,REVISION,SE->GetName().c_str(),dnsengine);
}
return versiondata;
}
char* InspIRCd::ModuleError()
{
return MODERR;
}
void InspIRCd::EraseFactory(int j)
{
int v = 0;
for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
{
if (v == j)
{
delete *t;
factory.erase(t);
factory.push_back(NULL);
return;
}
v++;
}
}
void InspIRCd::EraseModule(int j)
{
int v1 = 0;
for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
{
if (v1 == j)
{
DELETE(*m);
modules.erase(m);
modules.push_back(NULL);
break;
}
v1++;
}
int v2 = 0;
for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
{
if (v2 == j)
{
Config->module_names.erase(v);
break;
}
v2++;
}
}
void InspIRCd::MoveTo(std::string modulename,int slot)
{
unsigned int v2 = 256;
for (unsigned int v = 0; v < Config->module_names.size(); v++)
{
if (Config->module_names[v] == modulename)
{
// found an instance, swap it with the item at the end
v2 = v;
break;
}
}
if ((v2 != (unsigned int)slot) && (v2 < 256))
{
// Swap the module names over
Config->module_names[v2] = Config->module_names[slot];
Config->module_names[slot] = modulename;
// now swap the module factories
ircd_module* temp = factory[v2];
factory[v2] = factory[slot];
factory[slot] = temp;
// now swap the module objects
Module* temp_module = modules[v2];
modules[v2] = modules[slot];
modules[slot] = temp_module;
// now swap the implement lists (we dont
// need to swap the global or recount it)
for (int n = 0; n < 255; n++)
{
char x = Config->implement_lists[v2][n];
Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
Config->implement_lists[slot][n] = x;
}
}
}
void InspIRCd::MoveAfter(std::string modulename, std::string after)
{
for (unsigned int v = 0; v < Config->module_names.size(); v++)
{
if (Config->module_names[v] == after)
{
MoveTo(modulename, v);
return;
}
}
}
void InspIRCd::MoveBefore(std::string modulename, std::string before)
{
for (unsigned int v = 0; v < Config->module_names.size(); v++)
{
if (Config->module_names[v] == before)
{
if (v > 0)
{
MoveTo(modulename, v-1);
}
else
{
MoveTo(modulename, v);
}
return;
}
}
}
void InspIRCd::MoveToFirst(std::string modulename)
{
MoveTo(modulename,0);
}
void InspIRCd::MoveToLast(std::string modulename)
{
MoveTo(modulename,this->GetModuleCount());
}
void InspIRCd::BuildISupport()
{
// the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
std::stringstream v;
v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES-1 << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << Config->MaxChans << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32 ELIST=MU";
Config->data005 = v.str();
FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
Config->Update005();
}
bool InspIRCd::UnloadModule(const char* filename)
{
std::string filename_str = filename;
for (unsigned int j = 0; j != Config->module_names.size(); j++)
{
if (Config->module_names[j] == filename_str)
{
if (modules[j]->GetVersion().Flags & VF_STATIC)
{
this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
return false;
}
std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
if (intercount.first > 0)
{
this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
intercount.first,
intercount.first > 1 ? "s" : "",
intercount.first > 1 ? "are" : "is",
intercount.second.c_str());
return false;
}
/* Give the module a chance to tidy out all its metadata */
for (chan_hash::iterator c = this->chanlist->begin(); c != this->chanlist->end(); c++)
{
modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
}
for (user_hash::iterator u = this->clientlist->begin(); u != this->clientlist->end(); u++)
{
modules[j]->OnCleanup(TYPE_USER,u->second);
}
/* Tidy up any dangling resolvers */
this->Res->CleanResolvers(modules[j]);
FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
for(int t = 0; t < 255; t++)
{
Config->global_implementation[t] -= Config->implement_lists[j][t];
}
/* We have to renumber implement_lists after unload because the module numbers change!
*/
for(int j2 = j; j2 < 254; j2++)
{
for(int t = 0; t < 255; t++)
{
Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
}
}
// found the module
Parser->RemoveCommands(filename);
this->EraseModule(j);
this->EraseFactory(j);
this->Log(DEFAULT,"Module %s unloaded",filename);
this->ModCount--;
BuildISupport();
return true;
}
}
this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
snprintf(MODERR,MAXBUF,"Module not loaded");
return false;
}
bool InspIRCd::LoadModule(const char* filename)
{
/* Do we have a glob pattern in the filename?
* The user wants to load multiple modules which
* match the pattern.
*/
if (strchr(filename,'*') || (strchr(filename,'?')))
{
int n_match = 0;
DIR* library = opendir(Config->ModPath);
if (library)
{
/* Try and locate and load all modules matching the pattern */
dirent* entry = NULL;
while ((entry = readdir(library)))
{
if (this->MatchText(entry->d_name, filename))
{
if (!this->LoadModule(entry->d_name))
n_match++;
}
}
closedir(library);
}
/* Loadmodule will now return false if any one of the modules failed
* to load (but wont abort when it encounters a bad one) and when 1 or
* more modules were actually loaded.
*/
return (n_match > 0);
}
char modfile[MAXBUF];
snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
std::string filename_str = filename;
if (!ServerConfig::DirValid(modfile))
{
this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
return false;
}
if (ServerConfig::FileExists(modfile))
{
for (unsigned int j = 0; j < Config->module_names.size(); j++)
{
if (Config->module_names[j] == filename_str)
{
this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
snprintf(MODERR,MAXBUF,"Module already loaded");
return false;
}
}
Module* m = NULL;
ircd_module* a = NULL;
try
{
a = new ircd_module(this, modfile);
factory[this->ModCount+1] = a;
if (factory[this->ModCount+1]->LastError())
{
this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
return false;
}
if ((long)factory[this->ModCount+1]->factory != -1)
{
m = factory[this->ModCount+1]->factory->CreateModule(this);
Version v = m->GetVersion();
if (v.API != API_VERSION)
{
delete m;
this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
return false;
}
else
{
this->Log(DEFAULT,"New module introduced: %s (API version %d, Module version %d.%d.%d.%d)%s", filename, v.API, v.Major, v.Minor, v.Revision, v.Build, (!(v.Flags & VF_VENDOR) ? " [3rd Party]" : " [Vendor]"));
}
modules[this->ModCount+1] = m;
/* save the module and the module's classfactory, if
* this isnt done, random crashes can occur :/ */
Config->module_names.push_back(filename);
char* x = &Config->implement_lists[this->ModCount+1][0];
for(int t = 0; t < 255; t++)
x[t] = 0;
modules[this->ModCount+1]->Implements(x);
for(int t = 0; t < 255; t++)
Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
}
else
{
this->Log(DEFAULT,"Unable to load %s",modfile);
snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
return false;
}
}
catch (CoreException& modexcept)
{
this->Log(DEFAULT,"Unable to load %s: %s",modfile,modexcept.GetReason());
snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
return false;
}
}
else
{
this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
snprintf(MODERR,MAXBUF,"Module file could not be found");
return false;
}
this->ModCount++;
FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
// now work out which modules, if any, want to move to the back of the queue,
// and if they do, move them there.
std::vector<std::string> put_to_back;
std::vector<std::string> put_to_front;
std::map<std::string,std::string> put_before;
std::map<std::string,std::string> put_after;
for (unsigned int j = 0; j < Config->module_names.size(); j++)
{
if (modules[j]->Prioritize() == PRIORITY_LAST)
put_to_back.push_back(Config->module_names[j]);
else if (modules[j]->Prioritize() == PRIORITY_FIRST)
put_to_front.push_back(Config->module_names[j]);
else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
}
for (unsigned int j = 0; j < put_to_back.size(); j++)
MoveToLast(put_to_back[j]);
for (unsigned int j = 0; j < put_to_front.size(); j++)
MoveToFirst(put_to_front[j]);
for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
MoveBefore(j->first,j->second);
for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
MoveAfter(j->first,j->second);
BuildISupport();
return true;
}
void InspIRCd::DoOneIteration(bool process_module_sockets)
{
#ifndef WIN32
static rusage ru;
#else
static time_t uptime;
static struct tm * stime;
static char window_title[100];
#endif
/* time() seems to be a pretty expensive syscall, so avoid calling it too much.
* Once per loop iteration is pleanty.
*/
OLDTIME = TIME;
TIME = time(NULL);
/* Run background module timers every few seconds
* (the docs say modules shouldnt rely on accurate
* timing using this event, so we dont have to
* time this exactly).
*/
if (TIME != OLDTIME)
{
if (TIME < OLDTIME)
WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
if ((TIME % 3600) == 0)
{
this->RehashUsersAndChans();
FOREACH_MOD_I(this, I_OnGarbageCollect, OnGarbageCollect());
}
Timers->TickTimers(TIME);
this->DoBackgroundUserStuff(TIME);
if ((TIME % 5) == 0)
{
XLines->expire_lines();
FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
Timers->TickMissedTimers(TIME);
}
#ifndef WIN32
/* Same change as in cmd_stats.cpp, use RUSAGE_SELF rather than '0' -- Om */
if (!getrusage(RUSAGE_SELF, &ru))
{
gettimeofday(&this->stats->LastSampled, NULL);
this->stats->LastCPU = ru.ru_utime;
}
#else
CheckIPC(this);
if(Config->nofork)
{
uptime = Time() - startup_time;
stime = gmtime(&uptime);
snprintf(window_title, 100, "InspIRCd - %u clients, %u accepted connections - Up %u days, %.2u:%.2u:%.2u",
LocalUserCount(), stats->statsAccept, stime->tm_yday, stime->tm_hour, stime->tm_min, stime->tm_sec);
SetConsoleTitle(window_title);
}
#endif
}
/* Call the socket engine to wait on the active
* file descriptors. The socket engine has everything's
* descriptors in its list... dns, modules, users,
* servers... so its nice and easy, just one call.
* This will cause any read or write events to be
* dispatched to their handlers.
*/
SE->DispatchEvents();
/* if any users was quit, take them out */
GlobalCulls.Apply();
/* If any inspsockets closed, remove them */
for (std::map<InspSocket*,InspSocket*>::iterator x = SocketCull.begin(); x != SocketCull.end(); ++x)
{
SE->DelFd(x->second);
x->second->Close();
delete x->second;
}
SocketCull.clear();
}
int InspIRCd::Run()
{
while (true)
{
DoOneIteration(true);
}
/* This is never reached -- we hope! */
return 0;
}
/**********************************************************************************/
/**
* An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
*/
int main(int argc, char** argv)
{
SI = new InspIRCd(argc, argv);
SI->Run();
delete SI;
return 0;
}
/* this returns true when all modules are satisfied that the user should be allowed onto the irc server
* (until this returns true, a user will block in the waiting state, waiting to connect up to the
* registration timeout maximum seconds)
*/
bool InspIRCd::AllModulesReportReady(userrec* user)
{
if (!Config->global_implementation[I_OnCheckReady])
return true;
for (int i = 0; i <= this->GetModuleCount(); i++)
{
if (Config->implement_lists[i][I_OnCheckReady])
{
int res = modules[i]->OnCheckReady(user);
if (!res)
return false;
}
}
return true;
}
int InspIRCd::GetModuleCount()
{
return this->ModCount;
}
time_t InspIRCd::Time(bool delta)
{
if (delta)
return TIME + time_delta;
return TIME;
}
int InspIRCd::SetTimeDelta(int delta)
{
int old = time_delta;
time_delta = delta;
this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
return old;
}
void InspIRCd::AddLocalClone(userrec* user)
{
clonemap::iterator x = local_clones.find(user->GetIPString());
if (x != local_clones.end())
x->second++;
else
local_clones[user->GetIPString()] = 1;
}
void InspIRCd::AddGlobalClone(userrec* user)
{
clonemap::iterator y = global_clones.find(user->GetIPString());
if (y != global_clones.end())
y->second++;
else
global_clones[user->GetIPString()] = 1;
}
int InspIRCd::GetTimeDelta()
{
return time_delta;
}
bool FileLogger::Readable()
{
return false;
}
void FileLogger::HandleEvent(EventType et, int errornum)
{
this->WriteLogLine("");
if (log)
ServerInstance->SE->DelFd(this);
}
void FileLogger::WriteLogLine(const std::string &line)
{
if (line.length())
buffer.append(line);
if (log)
{
int written = fprintf(log,"%s",buffer.c_str());
#ifdef WINDOWS
buffer.clear();
#else
if ((written >= 0) && (written < (int)buffer.length()))
{
buffer.erase(0, buffer.length());
ServerInstance->SE->AddFd(this);
}
else if (written == -1)
{
if (errno == EAGAIN)
ServerInstance->SE->AddFd(this);
}
else
{
/* Wrote the whole buffer, and no need for write callback */
buffer.clear();
}
#endif
if (writeops++ % 20)
{
fflush(log);
}
}
}
void FileLogger::Close()
{
if (log)
{
/* Burlex: Windows assumes nonblocking on FILE* pointers anyway, and also "file" fd's aren't the same
* as socket fd's. */
#ifndef WIN32
int flags = fcntl(fileno(log), F_GETFL, 0);
fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
#endif
if (buffer.size())
fprintf(log,"%s",buffer.c_str());
#ifndef WINDOWS
ServerInstance->SE->DelFd(this);
#endif
fflush(log);
fclose(log);
}
buffer.clear();
}
FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
{
if (log)
{
irc::sockets::NonBlocking(fileno(log));
this->SetFd(fileno(log));
buffer.clear();
}
}
FileLogger::~FileLogger()
{
this->Close();
}
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