/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
 *                       E-mail:
 *                <brain@chatspike.net>
 *           	  <Craig@chatspike.net>
 *     
 * Written by Craig Edwards, Craig McLure, and others.
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

/* Now with added unF! ;) */

using namespace std;

#include "inspircd.h"
#include "inspircd_io.h"
#include "inspircd_util.h"
#include "inspircd_config.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <cstdio>
#include <time.h>
#include <string>
#ifdef GCC3
#include <ext/hash_map>
#else
#include <hash_map>
#endif
#include <map>
#include <sstream>
#include <vector>
#include <errno.h>
#include <deque>
#include <errno.h>
#include <unistd.h>
#include <sched.h>
#include "connection.h"
#include "users.h"
#include "servers.h"
#include "ctables.h"
#include "globals.h"
#include "modules.h"
#include "dynamic.h"
#include "wildcard.h"
#include "message.h"
#include "mode.h"
#include "commands.h"
#include "xline.h"
#include "inspstring.h"
#include "dnsqueue.h"

#ifdef GCC3
#define nspace __gnu_cxx
#else
#define nspace std
#endif

int LogLevel = DEFAULT;
char ServerName[MAXBUF];
char Network[MAXBUF];
char ServerDesc[MAXBUF];
char AdminName[MAXBUF];
char AdminEmail[MAXBUF];
char AdminNick[MAXBUF];
char diepass[MAXBUF];
char restartpass[MAXBUF];
char motd[MAXBUF];
char rules[MAXBUF];
char list[MAXBUF];
char PrefixQuit[MAXBUF];
char DieValue[MAXBUF];
char DNSServer[MAXBUF];
int debugging =  0;
int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
int DieDelay  =  5;
time_t startup_time = time(NULL);
int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
extern int MaxWhoResults;
time_t nb_start = 0;
int dns_timeout = 5;

char DisabledCommands[MAXBUF];

bool AllowHalfop = true;
bool AllowProtect = true;
bool AllowFounder = true;

extern std::vector<Module*> modules;
std::vector<std::string> module_names;
extern std::vector<ircd_module*> factory;
std::vector<int> fd_reap;

extern int MODCOUNT;
int openSockfd[MAXSOCKS];
bool nofork = false;
bool unlimitcore = false;

time_t TIME = time(NULL);

namespace nspace
{
#ifdef GCC34
        template<> struct hash<in_addr>
#else
        template<> struct nspace::hash<in_addr>
#endif
        {
                size_t operator()(const struct in_addr &a) const
                {
                        size_t q;
                        memcpy(&q,&a,sizeof(size_t));
                        return q;
                }
        };
#ifdef GCC34
        template<> struct hash<string>
#else
        template<> struct nspace::hash<string>
#endif
        {
                size_t operator()(const string &s) const
                {
                        char a[MAXBUF];
                        static struct hash<const char *> strhash;
                        strlcpy(a,s.c_str(),MAXBUF);
                        strlower(a);
                        return strhash(a);
                }
        };
}


struct StrHashComp
{

	bool operator()(const string& s1, const string& s2) const
	{
		char a[MAXBUF],b[MAXBUF];
		strlcpy(a,s1.c_str(),MAXBUF);
		strlcpy(b,s2.c_str(),MAXBUF);
		return (strcasecmp(a,b) == 0);
	}

};

struct InAddr_HashComp
{

	bool operator()(const in_addr &s1, const in_addr &s2) const
	{
		size_t q;
		size_t p;
		
		memcpy(&q,&s1,sizeof(size_t));
		memcpy(&p,&s2,sizeof(size_t));
		
		return (q == p);
	}

};


typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
typedef std::deque<command_t> command_table;

serverrec* me[32];

FILE *log_file;

user_hash clientlist;
chan_hash chanlist;
user_hash whowas;
command_table cmdlist;
file_cache MOTD;
file_cache RULES;
address_cache IP;

ClassVector Classes;

struct linger linger = { 0 };
char MyExecutable[1024];
int boundPortCount = 0;
int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
int defaultRoute = 0;
char ModPath[MAXBUF];

connection C;

long MyKey = C.GenKey();

/* prototypes */

int has_channel(userrec *u, chanrec *c);
int usercount(chanrec *c);
int usercount_i(chanrec *c);
char* Passwd(userrec *user);
bool IsDenied(userrec *user);
void AddWhoWas(userrec* u);

std::vector<long> auth_cookies;
std::stringstream config_f(stringstream::in | stringstream::out);



long GetRevision()
{
	char Revision[] = "$Revision$";
	char *s1 = Revision;
	char *savept;
	char *v1 = strtok_r(s1," ",&savept);
	s1 = savept;
	char *v2 = strtok_r(s1," ",&savept);
	s1 = savept;
	return (long)(atof(v2)*10000);
}


std::string getservername()
{
	return ServerName;
}

std::string getserverdesc()
{
	return ServerDesc;
}

std::string getnetworkname()
{
	return Network;
}

std::string getadminname()
{
	return AdminName;
}

std::string getadminemail()
{
	return AdminEmail;
}

std::string getadminnick()
{
	return AdminNick;
}

void log(int level,char *text, ...)
{
	char textbuffer[MAXBUF];
	va_list argsPtr;
	time_t rawtime;
	struct tm * timeinfo;
	if (level < LogLevel)
		return;

	time(&rawtime);
	timeinfo = localtime (&rawtime);

	if (log_file)
	{
		char b[MAXBUF];
		va_start (argsPtr, text);
		vsnprintf(textbuffer, MAXBUF, text, argsPtr);
		va_end(argsPtr);
		strlcpy(b,asctime(timeinfo),MAXBUF);
		b[strlen(b)-1] = ':';
		fprintf(log_file,"%s %s\n",b,textbuffer);
		if (nofork)
		{
			// nofork enabled? display it on terminal too
			printf("%s %s\n",b,textbuffer);
		}
	}
}

void readfile(file_cache &F, const char* fname)
{
	FILE* file;
	char linebuf[MAXBUF];
	
	log(DEBUG,"readfile: loading %s",fname);
	F.clear();
	file =  fopen(fname,"r");
	if (file)
	{
		while (!feof(file))
		{
			fgets(linebuf,sizeof(linebuf),file);
			linebuf[strlen(linebuf)-1]='\0';
			if (!strcmp(linebuf,""))
			{
				strcpy(linebuf,"  ");
			}
			if (!feof(file))
			{
				F.push_back(linebuf);
			}
		}
		fclose(file);
	}
	else
	{
		log(DEBUG,"readfile: failed to load file: %s",fname);
	}
	log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
}

void ReadConfig(bool bail, userrec* user)
{
	char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
	char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF];
	ConnectClass c;
	std::stringstream errstr;
	
	if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
	{
		errstr.seekg(0);
		if (bail)
		{
			printf("There were errors in your configuration:\n%s",errstr.str().c_str());
			Exit(0);
		}
		else
		{
			char dataline[1024];
			if (user)
			{
				WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
				while (!errstr.eof())
				{
					errstr.getline(dataline,1024);
					WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
				}
			}
			else
			{
				WriteOpers("There were errors in the configuration file:",user->nick);
				while (!errstr.eof())
				{
					errstr.getline(dataline,1024);
					WriteOpers(dataline);
				}
			}
			return;
		}
	}
	  
	ConfValue("server","name",0,ServerName,&config_f);
	ConfValue("server","description",0,ServerDesc,&config_f);
	ConfValue("server","network",0,Network,&config_f);
	ConfValue("admin","name",0,AdminName,&config_f);
	ConfValue("admin","email",0,AdminEmail,&config_f);
	ConfValue("admin","nick",0,AdminNick,&config_f);
	ConfValue("files","motd",0,motd,&config_f);
	ConfValue("files","rules",0,rules,&config_f);
	ConfValue("power","diepass",0,diepass,&config_f);
	ConfValue("power","pause",0,pauseval,&config_f);
	ConfValue("power","restartpass",0,restartpass,&config_f);
	ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
	ConfValue("die","value",0,DieValue,&config_f);
	ConfValue("options","loglevel",0,dbg,&config_f);
	ConfValue("options","netbuffersize",0,NB,&config_f);
	ConfValue("options","maxwho",0,MW,&config_f);
	ConfValue("options","allowhalfop",0,AH,&config_f);
	ConfValue("options","allowprotect",0,AP,&config_f);
	ConfValue("options","allowfounder",0,AF,&config_f);
	ConfValue("dns","server",0,DNSServer,&config_f);
	ConfValue("dns","timeout",0,DNT,&config_f);
	ConfValue("options","moduledir",0,ModPath,&config_f);
        ConfValue("disabled","commands",0,DisabledCommands,&config_f);

	NetBufferSize = atoi(NB);
	MaxWhoResults = atoi(MW);
	dns_timeout = atoi(DNT);
	if (!dns_timeout)
		dns_timeout = 5;
	if (!strcmp(DNSServer,""))
		strlcpy(DNSServer,"127.0.0.1",MAXBUF);
	if (!strcmp(ModPath,""))
		strlcpy(ModPath,MOD_PATH,MAXBUF);
	AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
	AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
	AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
	if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
	{
		log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
		NetBufferSize = 10240;
	}
	if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
	{
		log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
		MaxWhoResults = 128;
	}
	if (!strcmp(dbg,"debug"))
		LogLevel = DEBUG;
	if (!strcmp(dbg,"verbose"))
		LogLevel = VERBOSE;
	if (!strcmp(dbg,"default"))
		LogLevel = DEFAULT;
	if (!strcmp(dbg,"sparse"))
		LogLevel = SPARSE;
	if (!strcmp(dbg,"none"))
		LogLevel = NONE;
	readfile(MOTD,motd);
	log(DEFAULT,"Reading message of the day...");
	readfile(RULES,rules);
	log(DEFAULT,"Reading connect classes...");
	Classes.clear();
	for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
	{
		strcpy(Value,"");
		ConfValue("connect","allow",i,Value,&config_f);
		ConfValue("connect","timeout",i,timeout,&config_f);
		ConfValue("connect","flood",i,flood,&config_f);
		ConfValue("connect","pingfreq",i,pfreq,&config_f);
		if (strcmp(Value,""))
		{
			strlcpy(c.host,Value,MAXBUF);
			c.type = CC_ALLOW;
			strlcpy(Value,"",MAXBUF);
			ConfValue("connect","password",i,Value,&config_f);
			strlcpy(c.pass,Value,MAXBUF);
			c.registration_timeout = 90; // default is 2 minutes
			c.pingtime = 120;
			c.flood = atoi(flood);
			if (atoi(timeout)>0)
			{
				c.registration_timeout = atoi(timeout);
			}
			if (atoi(pfreq)>0)
			{
				c.pingtime = atoi(pfreq);
			}
			Classes.push_back(c);
			log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
		}
		else
		{
			ConfValue("connect","deny",i,Value,&config_f);
			strlcpy(c.host,Value,MAXBUF);
			c.type = CC_DENY;
			Classes.push_back(c);
			log(DEBUG,"Read connect class type DENY, host=%s",c.host);
		}
	
	}
	log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
	read_xline_defaults();
	log(DEFAULT,"Applying K lines, Q lines and Z lines...");
	apply_lines();
	log(DEFAULT,"Done reading configuration file, InspIRCd is now running.");
	if (!bail)
	{
		log(DEFAULT,"Adding and removing modules due to rehash...");

		std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;

		// store the old module names
		for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
		{
			old_module_names.push_back(*t);
		}

		// get the new module names
		for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
		{
			ConfValue("module","name",count2,Value,&config_f);
			new_module_names.push_back(Value);
		}

		// now create a list of new modules that are due to be loaded
		// and a seperate list of modules which are due to be unloaded
		for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
		{
			bool added = true;
			for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
			{
				if (*old == *_new)
					added = false;
			}
			if (added)
				added_modules.push_back(*_new);
		}
		for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
		{
			bool removed = true;
			for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
			{
				if (*newm == *oldm)
					removed = false;
			}
			if (removed)
				removed_modules.push_back(*oldm);
		}
		// now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
		// to be removed.
		int rem = 0, add = 0;
		if (!removed_modules.empty())
		for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
		{
			if (UnloadModule(removing->c_str()))
			{
				WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
				WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
				rem++;
			}
			else
			{
				WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
			}
		}
		if (!added_modules.empty())
		for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
		{
			if (LoadModule(adding->c_str()))
			{
				WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
				WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
				add++;
			}
			else
			{
				WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
			}
		}
		log(DEFAULT,"Successfully unloaded %d of %d modules and loaded %d of %d modules.",rem,removed_modules.size(),add,added_modules.size());
	}
}

/* write formatted text to a socket, in same format as printf */

void Write(int sock,char *text, ...)
{
	if (sock == FD_MAGIC_NUMBER)
		return;
	if (!text)
	{
		log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF];
	va_list argsPtr;
	char tb[MAXBUF];
	
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
	chop(tb);
	if (sock != -1)
	{
		write(sock,tb,strlen(tb));
	}
}

/* write a server formatted numeric response to a single socket */

void WriteServ(int sock, char* text, ...)
{
        if (sock == FD_MAGIC_NUMBER)
                return;
	if (!text)
	{
		log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF],tb[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
	chop(tb);
	if (sock != -1)
	{
		write(sock,tb,strlen(tb));
	}
}

/* write text from an originating user to originating user */

void WriteFrom(int sock, userrec *user,char* text, ...)
{
        if (sock == FD_MAGIC_NUMBER)
                return;
	if ((!text) || (!user))
	{
		log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF],tb[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
	chop(tb);
	if (sock != -1)
	{
		write(sock,tb,strlen(tb));
	}
}

/* write text to an destination user from a source user (e.g. user privmsg) */

void WriteTo(userrec *source, userrec *dest,char *data, ...)
{
	if ((!dest) || (!data))
	{
		log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
		return;
	}
        if (dest->fd == FD_MAGIC_NUMBER)
                return;
	char textbuffer[MAXBUF],tb[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, data);
	vsnprintf(textbuffer, MAXBUF, data, argsPtr);
	va_end(argsPtr);
	chop(tb);

	// if no source given send it from the server.
	if (!source)
	{
		WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
	}
	else
	{
		WriteFrom(dest->fd,source,"%s",textbuffer);
	}
}

/* write formatted text from a source user to all users on a channel
 * including the sender (NOT for privmsg, notice etc!) */

void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
{
	if ((!Ptr) || (!user) || (!text))
	{
		log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (has_channel(i->second,Ptr))
		{
			if (i->second->fd != FD_MAGIC_NUMBER)
				WriteTo(user,i->second,"%s",textbuffer);
		}
	}
}

/* write formatted text from a source user to all users on a channel
 * including the sender (NOT for privmsg, notice etc!) doesnt send to
 * users on remote servers */

void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
{
	if ((!Ptr) || (!text))
	{
		log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (has_channel(i->second,Ptr))
		{
			if ((i->second->fd != -1) && (i->second->fd != FD_MAGIC_NUMBER))
			{
				if (!user)
				{
					WriteServ(i->second->fd,"%s",textbuffer);
				}
				else
				{
					WriteTo(user,i->second,"%s",textbuffer);
				}
			}	
		}
	}
}


void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
{
	if ((!Ptr) || (!user) || (!text))
	{
		log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if ((has_channel(i->second,Ptr)) && (i->second->fd != FD_MAGIC_NUMBER))
			{
				WriteServ(i->second->fd,"%s",textbuffer);
			}
		}
	}
}


/* write formatted text from a source user to all users on a channel except
 * for the sender (for privmsg etc) */

void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
{
	if ((!Ptr) || (!user) || (!text))
	{
		log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
		return;
	}
	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if ((has_channel(i->second,Ptr)) && (user != i->second) && (i->second->fd != FD_MAGIC_NUMBER))
			{
				WriteTo(user,i->second,"%s",textbuffer);
			}
		}
	}
}


std::string GetServerDescription(char* servername)
{
	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
				{
					return me[j]->connectors[k].GetDescription();
				}
			}
		}
		return ServerDesc; // not a remote server that can be found, it must be me.
	}
}


/* write a formatted string to all users who share at least one common
 * channel, including the source user e.g. for use in NICK */

void WriteCommon(userrec *u, char* text, ...)
{
	if (!u)
	{
		log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
		return;
	}

	if (u->registered != 7) {
		log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
		return;
	}
	
	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	WriteFrom(u->fd,u,"%s",textbuffer);

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if ((common_channels(u,i->second) && (i->second != u)) && (i->second->fd != FD_MAGIC_NUMBER))
			{
				WriteFrom(i->second->fd,u,"%s",textbuffer);
			}
		}
	}
}

/* write a formatted string to all users who share at least one common
 * channel, NOT including the source user e.g. for use in QUIT */

void WriteCommonExcept(userrec *u, char* text, ...)
{
	if (!u)
	{
		log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
		return;
	}

	if (u->registered != 7) {
		log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
		return;
	}

	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if ((common_channels(u,i->second)) && (u != i->second))
			{
				WriteFrom(i->second->fd,u,"%s",textbuffer);
			}
		}
	}
}

void WriteOpers(char* text, ...)
{
	if (!text)
	{
		log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
		return;
	}

	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
		{
			if (strchr(i->second->modes,'o'))
			{
				if (strchr(i->second->modes,'s'))
				{
					// send server notices to all with +s
					// (TODO: needs SNOMASKs)
					WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
				}
			}
		}
	}
}

// returns TRUE of any users on channel C occupy server 'servername'.

bool ChanAnyOnThisServer(chanrec *c,char* servername)
{
	log(DEBUG,"ChanAnyOnThisServer");
	for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (has_channel(i->second,c))
		{
			if (!strcasecmp(i->second->server,servername))
			{
				return true;
			}
		}
	}
	return false;
}

// returns true if user 'u' shares any common channels with any users on server 'servername'

bool CommonOnThisServer(userrec* u,const char* servername)
{
	log(DEBUG,"ChanAnyOnThisServer");
	for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((common_channels(u,i->second)) && (u != i->second))
		{
			if (!strcasecmp(i->second->server,servername))
			{
				log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick);
				return true;
			}
		}
	}
	return false;
}


void NetSendToCommon(userrec* u, char* s)
{
	char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"%s",s);
	
	log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);

        std::string msg = buffer;
        FOREACH_MOD OnPacketTransmit(msg,s);
        strlcpy(buffer,msg.c_str(),MAXBUF);

	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
				{
					me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
				}
			}
		}
	}
}


void NetSendToAll(char* s)
{
	char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"%s",s);
	
	log(DEBUG,"NetSendToAll: '%s'",s);

        std::string msg = buffer;
        FOREACH_MOD OnPacketTransmit(msg,s);
        strlcpy(buffer,msg.c_str(),MAXBUF);

	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
			}
		}
	}
}

void NetSendToAllAlive(char* s)
{
	char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"%s",s);
	
	log(DEBUG,"NetSendToAllAlive: '%s'",s);

        std::string msg = buffer;
        FOREACH_MOD OnPacketTransmit(msg,s);
        strlcpy(buffer,msg.c_str(),MAXBUF);

	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
				{
					me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
				}
				else
				{
					log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
				}
			}
		}
	}
}


void NetSendToOne(char* target,char* s)
{
	char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"%s",s);
	
	log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);

        std::string msg = buffer;
        FOREACH_MOD OnPacketTransmit(msg,s);
        strlcpy(buffer,msg.c_str(),MAXBUF);

	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
				{
					me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
				}
			}
		}
	}
}

void NetSendToAllExcept(const char* target,char* s)
{
	char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"%s",s);
	
	log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
	
        std::string msg = buffer;
        FOREACH_MOD OnPacketTransmit(msg,s);
        strlcpy(buffer,msg.c_str(),MAXBUF);

	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
				{
					me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
				}
			}
		}
	}
}


void WriteMode(const char* modes, int flags, const char* text, ...)
{
	if ((!text) || (!modes) || (!flags))
	{
		log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
		return;
	}

	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
		{
			bool send_to_user = false;
			
			if (flags == WM_AND)
			{
				send_to_user = true;
				for (int n = 0; n < strlen(modes); n++)
				{
					if (!hasumode(i->second,modes[n]))
					{
						send_to_user = false;
						break;
					}
				}
			}
			else if (flags == WM_OR)
			{
				send_to_user = false;
				for (int n = 0; n < strlen(modes); n++)
				{
					if (hasumode(i->second,modes[n]))
					{
						send_to_user = true;
						break;
					}
				}
			}

			if (send_to_user)
			{
				WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
			}
		}
	}
}


void WriteWallOps(userrec *source, bool local_only, char* text, ...)  
{  
	if ((!text) || (!source))
	{
		log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
		return;
	}

        int i = 0;  
        char textbuffer[MAXBUF];  
        va_list argsPtr;  
        va_start (argsPtr, text);  
        vsnprintf(textbuffer, MAXBUF, text, argsPtr);  
        va_end(argsPtr);  
  
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
        {
        	if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
        	{
                	if (strchr(i->second->modes,'w'))
                	{
				WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
                	}
                }
	}

	if (!local_only)
	{
		char buffer[MAXBUF];
		snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
		NetSendToAll(buffer);
	}
}  

/* convert a string to lowercase. Note following special circumstances
 * taken from RFC 1459. Many "official" server branches still hold to this
 * rule so i will too;
 *
 *  Because of IRC's scandanavian origin, the characters {}| are
 *  considered to be the lower case equivalents of the characters []\,
 *  respectively. This is a critical issue when determining the
 *  equivalence of two nicknames.
 */

void strlower(char *n)
{
	if (!n)
	{
		return;
	}
	for (int i = 0; i != strlen(n); i++)
	{
		n[i] = tolower(n[i]);
		if (n[i] == '[')
			n[i] = '{';
		if (n[i] == ']')
			n[i] = '}';
		if (n[i] == '\\')
			n[i] = '|';
	}
}



/* Find a user record by nickname and return a pointer to it */

userrec* Find(std::string nick)
{
	user_hash::iterator iter = clientlist.find(nick);

	if (iter == clientlist.end())
		/* Couldn't find it */
		return NULL;

	return iter->second;
}

/* find a channel record by channel name and return a pointer to it */

chanrec* FindChan(const char* chan)
{
	if (!chan)
	{
		log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
		return NULL;
	}

	chan_hash::iterator iter = chanlist.find(chan);

	if (iter == chanlist.end())
		/* Couldn't find it */
		return NULL;

	return iter->second;
}


long GetMaxBans(char* name)
{
	char CM[MAXBUF];
	for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
	{
		ConfValue("banlist","chan",count,CM,&config_f);
		if (match(name,CM))
		{
			ConfValue("banlist","limit",count,CM,&config_f);
			return atoi(CM);
		}
	}
	return 64;
}


void purge_empty_chans(void)
{
	int go_again = 1, purge = 0;
	
	while (go_again)
	{
		go_again = 0;
		for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
		{
			if (i->second) {
				if (!usercount(i->second))
				{
					/* kill the record */
					if (i != chanlist.end())
					{
						log(DEBUG,"del_channel: destroyed: %s",i->second->name);
						if (i->second)
							delete i->second;
						chanlist.erase(i);
						go_again = 1;
						purge++;
						break;
					}
				}
				else
				{
					log(DEBUG,"skipped purge for %s",i->second->name);
				}
			}
		}
	}
	log(DEBUG,"completed channel purge, killed %d",purge);
}


char scratch[MAXBUF];
char sparam[MAXBUF];

char* chanmodes(chanrec *chan)
{
	if (!chan)
	{
		log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
		strcpy(scratch,"");
		return scratch;
	}

	strcpy(scratch,"");
	strcpy(sparam,"");
	if (chan->noexternal)
	{
		strlcat(scratch,"n",MAXMODES);
	}
	if (chan->topiclock)
	{
		strlcat(scratch,"t",MAXMODES);
	}
	if (strcmp(chan->key,""))
	{
		strlcat(scratch,"k",MAXMODES);
	}
	if (chan->limit)
	{
		strlcat(scratch,"l",MAXMODES);
	}
	if (chan->inviteonly)
	{
		strlcat(scratch,"i",MAXMODES);
	}
	if (chan->moderated)
	{
		strlcat(scratch,"m",MAXMODES);
	}
	if (chan->secret)
	{
		strlcat(scratch,"s",MAXMODES);
	}
	if (chan->c_private)
	{
		strlcat(scratch,"p",MAXMODES);
	}
	if (strcmp(chan->key,""))
	{
		strlcat(sparam," ",MAXBUF);
		strlcat(sparam,chan->key,MAXBUF);
	}
	if (chan->limit)
	{
		char foo[24];
		sprintf(foo," %d",chan->limit);
		strlcat(sparam,foo,MAXBUF);
	}
	if (strlen(chan->custom_modes))
	{
		strlcat(scratch,chan->custom_modes,MAXMODES);
		for (int z = 0; z < strlen(chan->custom_modes); z++)
		{
			std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
			if (extparam != "")
			{
				strlcat(sparam," ",MAXBUF);
				strlcat(sparam,extparam.c_str(),MAXBUF);
			}
		}
	}
	log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
	strlcat(scratch,sparam,MAXMODES);
	return scratch;
}


/* compile a userlist of a channel into a string, each nick seperated by
 * spaces and op, voice etc status shown as @ and + */

void userlist(userrec *user,chanrec *c)
{
	if ((!c) || (!user))
	{
		log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
		return;
	}

	snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (has_channel(i->second,c))
		{
			if (isnick(i->second->nick))
			{
				if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
				{
					/* user is +i, and source not on the channel, does not show
					 * nick in NAMES list */
					continue;
				}
				strlcat(list,cmode(i->second,c),MAXBUF);
				strlcat(list,i->second->nick,MAXBUF);
				strlcat(list," ",MAXBUF);
				if (strlen(list)>(480-NICKMAX))
				{
					/* list overflowed into
					 * multiple numerics */
					WriteServ(user->fd,"%s",list);
					snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
				}
			}
		}
	}
	/* if whats left in the list isnt empty, send it */	if (list[strlen(list)-1] != ':')
	{
		WriteServ(user->fd,"%s",list);
	}
}

/* return a count of the users on a specific channel accounting for
 * invisible users who won't increase the count. e.g. for /LIST */

int usercount_i(chanrec *c)
{
	int i = 0;
	int count = 0;
	
	if (!c)
	{
		log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
		return 0;
	}

	strcpy(list,"");
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if (has_channel(i->second,c))
			{
				if (isnick(i->second->nick))
				{
					if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
					{
						/* user is +i, and source not on the channel, does not show
						 * nick in NAMES list */
						continue;
					}
					count++;
				}
			}
		}
	}
	log(DEBUG,"usercount_i: %s %d",c->name,count);
	return count;
}


int usercount(chanrec *c)
{
	int i = 0;
	int count = 0;
	
	if (!c)
	{
		log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
		return 0;
	}

	strcpy(list,"");
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if (has_channel(i->second,c))
			{
				if ((isnick(i->second->nick)) && (i->second->registered == 7))
				{
					count++;
				}
			}
		}
	}
	log(DEBUG,"usercount: %s %d",c->name,count);
	return count;
}


/* add a channel to a user, creating the record for it if needed and linking
 * it to the user record */

chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
{
	if ((!user) || (!cn))
	{
		log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
		return 0;
	}

	int i = 0;
	chanrec* Ptr;
	int created = 0;
	char cname[MAXBUF];

	strncpy(cname,cn,MAXBUF);
	
	// we MUST declare this wherever we use FOREACH_RESULT
	int MOD_RESULT = 0;

	if (strlen(cname) > CHANMAX-1)
	{
		cname[CHANMAX-1] = '\0';
	}

	log(DEBUG,"add_channel: %s %s",user->nick,cname);
	
	if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
	{
		return NULL; // already on the channel!
	}


	if (!FindChan(cname))
	{
		int MOD_RESULT = 0;
		FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
		if (MOD_RESULT == 1) {
			return NULL;
		}

		/* create a new one */
		log(DEBUG,"add_channel: creating: %s",cname);
		{
			chanlist[cname] = new chanrec();

			strlcpy(chanlist[cname]->name, cname,CHANMAX);
			chanlist[cname]->topiclock = 1;
			chanlist[cname]->noexternal = 1;
			chanlist[cname]->created = TIME;
			strcpy(chanlist[cname]->topic, "");
			strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
			chanlist[cname]->topicset = 0;
			Ptr = chanlist[cname];
			log(DEBUG,"add_channel: created: %s",cname);
			/* set created to 2 to indicate user
			 * is the first in the channel
			 * and should be given ops */
			created = 2;
		}
	}
	else
	{
		/* channel exists, just fish out a pointer to its struct */
		Ptr = FindChan(cname);
		if (Ptr)
		{
			log(DEBUG,"add_channel: joining to: %s",Ptr->name);
			
			// the override flag allows us to bypass channel modes
			// and bans (used by servers)
			if ((!override) || (!strcasecmp(user->server,ServerName)))
			{
				log(DEBUG,"Not overriding...");
				int MOD_RESULT = 0;
				FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
				if (MOD_RESULT == 1) {
					return NULL;
				}
				log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
				
				if (!MOD_RESULT) 
				{
					log(DEBUG,"add_channel: checking key, invite, etc");
					if (strcmp(Ptr->key,""))
					{
						log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
						if (!key)
						{
							log(DEBUG,"add_channel: no key given in JOIN");
							WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
							return NULL;
						}
						else
						{
							log(DEBUG,"key at %p is %s",key,key);
							if (strcasecmp(key,Ptr->key))
							{
								log(DEBUG,"add_channel: bad key given in JOIN");
								WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
								return NULL;
							}
						}
					}
					log(DEBUG,"add_channel: no key");
		
					if (Ptr->inviteonly)
					{
						log(DEBUG,"add_channel: channel is +i");
						if (user->IsInvited(Ptr->name))
						{
							/* user was invited to channel */
							/* there may be an optional channel NOTICE here */
						}
						else
						{
							WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
							return NULL;
						}
					}
					log(DEBUG,"add_channel: channel is not +i");
		
					if (Ptr->limit)
					{
						if (usercount(Ptr) == Ptr->limit)
						{
							WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
							return NULL;
						}
					}
					
					log(DEBUG,"add_channel: about to walk banlist");
		
					/* check user against the channel banlist */
					if (Ptr)
					{
						if (Ptr->bans.size())
						{
							for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
							{
								if (match(user->GetFullHost(),i->data))
								{
									WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
									return NULL;
								}
							}
						}
					}
					
					log(DEBUG,"add_channel: bans checked");
				
				}
				

				if ((Ptr) && (user))
				{
					user->RemoveInvite(Ptr->name);
				}
	
				log(DEBUG,"add_channel: invites removed");

			}
			else
			{
				log(DEBUG,"Overridden checks");
			}

			
		}
		created = 1;
	}

	log(DEBUG,"Passed channel checks");
	
	for (int i =0; i != MAXCHANS; i++)
	{
		log(DEBUG,"Check location %d",i);
		if (user->chans[i].channel == NULL)
		{
			log(DEBUG,"Adding into their channel list at location %d",i);

			if (created == 2) 
			{
				/* first user in is given ops */
				user->chans[i].uc_modes = UCMODE_OP;
			}
			else
			{
				user->chans[i].uc_modes = 0;
			}
			user->chans[i].channel = Ptr;
			WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
			
			if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
			{
				// use the stamdard J token with no privilages.
				char buffer[MAXBUF];
				if (created == 2)
				{
					snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
				}
				else
				{
					snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
				}
				NetSendToAll(buffer);
			}

			log(DEBUG,"Sent JOIN to client");

			if (Ptr->topicset)
			{
				WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
				WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
			}
			userlist(user,Ptr);
			WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
			WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
			WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
			FOREACH_MOD OnUserJoin(user,Ptr);
			return Ptr;
		}
	}
	log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
	WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
	return NULL;
}

/* remove a channel from a users record, and remove the record from memory
 * if the channel has become empty */

chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
{
	if ((!user) || (!cname))
	{
		log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
		return NULL;
	}

	chanrec* Ptr;
	int created = 0;

	if ((!cname) || (!user))
	{
		return NULL;
	}

	Ptr = FindChan(cname);
	
	if (!Ptr)
	{
		return NULL;
	}

	FOREACH_MOD OnUserPart(user,Ptr);
	log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
	
	for (int i =0; i != MAXCHANS; i++)
	{
		/* zap it from the channel list of the user */
		if (user->chans[i].channel == Ptr)
		{
			if (reason)
			{
				WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);

				if (!local)
				{
					char buffer[MAXBUF];
					snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
					NetSendToAll(buffer);
				}

				
			}
			else
			{
				if (!local)
				{
					char buffer[MAXBUF];
					snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
					NetSendToAll(buffer);
				}
			
				WriteChannel(Ptr,user,"PART :%s",Ptr->name);
			}
			user->chans[i].uc_modes = 0;
			user->chans[i].channel = NULL;
			log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
			break;
		}
	}
	
	/* if there are no users left on the channel */
	if (!usercount(Ptr))
	{
		chan_hash::iterator iter = chanlist.find(Ptr->name);

		log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);

		/* kill the record */
		if (iter != chanlist.end())
		{
			log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
			if (iter->second) delete iter->second;
			chanlist.erase(iter);
		}
	}
}


void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
{
	if ((!src) || (!user) || (!Ptr) || (!reason))
	{
		log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
		return;
	}

	int i = 0;
	int created = 0;

	if ((!Ptr) || (!user) || (!src))
	{
		return;
	}

	log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);

	if (!has_channel(user,Ptr))
	{
		WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
		return;
	}

	int MOD_RESULT = 0;
	FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
	
	if (MOD_RESULT == ACR_DENY)
		return;

	if (MOD_RESULT == ACR_DEFAULT)
	{
 		if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
		{
			if (cstatus(src,Ptr) == STATUS_HOP)
			{
				WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
			}
			else
			{
				WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
			}
			
			return;
		}
	}
	
	for (int i =0; i != MAXCHANS; i++)
	{
		/* zap it from the channel list of the user */
		if (user->chans[i].channel)
		if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
		{
			WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
			user->chans[i].uc_modes = 0;
			user->chans[i].channel = NULL;
			log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
			break;
		}
	}
	
	/* if there are no users left on the channel */
	if (!usercount(Ptr))
	{
		chan_hash::iterator iter = chanlist.find(Ptr->name);

		log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);

		/* kill the record */
		if (iter != chanlist.end())
		{
			log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
			if (iter->second) delete iter->second;
			chanlist.erase(iter);
		}
	}
}




/* This function pokes and hacks at a parameter list like the following:
 *
 * PART #winbot,#darkgalaxy :m00!
 *
 * to turn it into a series of individual calls like this:
 *
 * PART #winbot :m00!
 * PART #darkgalaxy :m00!
 *
 * The seperate calls are sent to a callback function provided by the caller
 * (the caller will usually call itself recursively). The callback function
 * must be a command handler. Calling this function on a line with no list causes
 * no action to be taken. You must provide a starting and ending parameter number
 * where the range of the list can be found, useful if you have a terminating
 * parameter as above which is actually not part of the list, or parameters
 * before the actual list as well. This code is used by many functions which
 * can function as "one to list" (see the RFC) */

int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
{
	char plist[MAXBUF];
	char *param;
	char *pars[32];
	char blog[32][MAXBUF];
	char blog2[32][MAXBUF];
	int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
	char keystr[MAXBUF];
	char moo[MAXBUF];

	for (int i = 0; i <32; i++)
		strcpy(blog[i],"");

	for (int i = 0; i <32; i++)
		strcpy(blog2[i],"");

	strcpy(moo,"");
	for (int i = 0; i <10; i++)
	{
		if (!parameters[i])
		{
			parameters[i] = moo;
		}
	}
	if (joins)
	{
		if (pcnt > 1) /* we have a key to copy */
		{
			strlcpy(keystr,parameters[1],MAXBUF);
		}
	}

	if (!parameters[start])
	{
		return 0;
	}
	if (!strchr(parameters[start],','))
	{
		return 0;
	}
	strcpy(plist,"");
	for (int i = start; i <= end; i++)
	{
		if (parameters[i])
		{
			strlcat(plist,parameters[i],MAXBUF);
		}
	}
	
	j = 0;
	param = plist;

	t = strlen(plist);
	for (int i = 0; i < t; i++)
	{
		if (plist[i] == ',')
		{
			plist[i] = '\0';
			strlcpy(blog[j++],param,MAXBUF);
			param = plist+i+1;
			if (j>20)
			{
				WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
				return 1;
			}
		}
	}
	strlcpy(blog[j++],param,MAXBUF);
	total = j;

	if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
	{
		strcat(keystr,",");
	}
	
	if ((joins) && (keystr))
	{
		if (strchr(keystr,','))
		{
			j = 0;
			param = keystr;
			t2 = strlen(keystr);
			for (int i = 0; i < t2; i++)
			{
				if (keystr[i] == ',')
				{
					keystr[i] = '\0';
					strlcpy(blog2[j++],param,MAXBUF);
					param = keystr+i+1;
				}
			}
			strlcpy(blog2[j++],param,MAXBUF);
			total2 = j;
		}
	}

	for (j = 0; j < total; j++)
	{
		if (blog[j])
		{
			pars[0] = blog[j];
		}
		for (q = end; q < pcnt-1; q++)
		{
			if (parameters[q+1])
			{
				pars[q-end+1] = parameters[q+1];
			}
		}
		if ((joins) && (parameters[1]))
		{
			if (pcnt > 1)
			{
				pars[1] = blog2[j];
			}
			else
			{
				pars[1] = NULL;
			}
		}
		/* repeatedly call the function with the hacked parameter list */
		if ((joins) && (pcnt > 1))
		{
			if (pars[1])
			{
				// pars[1] already set up and containing key from blog2[j]
				fn(pars,2,u);
			}
			else
			{
				pars[1] = parameters[1];
				fn(pars,2,u);
			}
		}
		else
		{
			fn(pars,pcnt-(end-start),u);
		}
	}

	return 1;
}



void kill_link(userrec *user,const char* r)
{
	user_hash::iterator iter = clientlist.find(user->nick);
	
	char reason[MAXBUF];
	
	strncpy(reason,r,MAXBUF);

	if (strlen(reason)>MAXQUIT)
	{
		reason[MAXQUIT-1] = '\0';
	}

	log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
	Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
	log(DEBUG,"closing fd %d",user->fd);

	/* bugfix, cant close() a nonblocking socket (sux!) */
	if (user->registered == 7) {
		FOREACH_MOD OnUserQuit(user);
		WriteCommonExcept(user,"QUIT :%s",reason);

		// Q token must go to ALL servers!!!
		char buffer[MAXBUF];
		snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
		NetSendToAll(buffer);
	}

	/* push the socket on a stack of sockets due to be closed at the next opportunity
	 * 'Client exited' is an exception to this as it means the client side has already
	 * closed the socket, we don't need to do it.
	 */
	fd_reap.push_back(user->fd);
	
	bool do_purge = false;
	
	if (user->registered == 7) {
		WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
		AddWhoWas(user);
	}

	if (iter != clientlist.end())
	{
		log(DEBUG,"deleting user hash value %d",iter->second);
		if ((iter->second) && (user->registered == 7)) {
			if (iter->second) delete iter->second;
		}
		clientlist.erase(iter);
	}

	if (user->registered == 7) {
		purge_empty_chans();
	}
	//user = NULL;
}

void kill_link_silent(userrec *user,const char* r)
{
	user_hash::iterator iter = clientlist.find(user->nick);
	
	char reason[MAXBUF];
	
	strncpy(reason,r,MAXBUF);

	if (strlen(reason)>MAXQUIT)
	{
		reason[MAXQUIT-1] = '\0';
	}

	log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
	Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
	log(DEBUG,"closing fd %d",user->fd);

	/* bugfix, cant close() a nonblocking socket (sux!) */
	if (user->registered == 7) {
		FOREACH_MOD OnUserQuit(user);
		WriteCommonExcept(user,"QUIT :%s",reason);

		// Q token must go to ALL servers!!!
		char buffer[MAXBUF];
		snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
		NetSendToAll(buffer);
	}

	/* push the socket on a stack of sockets due to be closed at the next opportunity
	 * 'Client exited' is an exception to this as it means the client side has already
	 * closed the socket, we don't need to do it.
	 */
	fd_reap.push_back(user->fd);
	
	bool do_purge = false;
	
	if (iter != clientlist.end())
	{
		log(DEBUG,"deleting user hash value %d",iter->second);
		if ((iter->second) && (user->registered == 7)) {
			if (iter->second) delete iter->second;
		}
		clientlist.erase(iter);
	}

	if (user->registered == 7) {
		purge_empty_chans();
	}
}



// looks up a users password for their connection class (<ALLOW>/<DENY> tags)

char* Passwd(userrec *user)
{
	for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
	{
		if (match(user->host,i->host) && (i->type == CC_ALLOW))
		{
			return i->pass;
		}
	}
	return "";
}

bool IsDenied(userrec *user)
{
	for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
	{
		if (match(user->host,i->host) && (i->type == CC_DENY))
		{
			return true;
		}
	}
	return false;
}




/* sends out an error notice to all connected clients (not to be used
 * lightly!) */

void send_error(char *s)
{
	log(DEBUG,"send_error: %s",s);
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (isnick(i->second->nick))
		{
			WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
		}
		else
		{
			// fix - unregistered connections receive ERROR, not NOTICE
			Write(i->second->fd,"ERROR :%s",s);
		}
	}
}

void Error(int status)
{
	signal (SIGALRM, SIG_IGN);
	signal (SIGPIPE, SIG_IGN);
	signal (SIGTERM, SIG_IGN);
	signal (SIGABRT, SIG_IGN);
	signal (SIGSEGV, SIG_IGN);
	signal (SIGURG, SIG_IGN);
	signal (SIGKILL, SIG_IGN);
	log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
	send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
	Exit(status);
}


int main(int argc, char **argv)
{
	Start();
	srand(time(NULL));
	log(DEBUG,"*** InspIRCd starting up!");
	if (!FileExists(CONFIG_FILE))
	{
		printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
		log(DEFAULT,"main: no config");
		printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
		Exit(ERROR);
	}
	if (argc > 1) {
		for (int i = 1; i < argc; i++)
		{
			if (!strcmp(argv[i],"-nofork")) {
				nofork = true;
			}
			if (!strcmp(argv[i],"-wait")) {
				sleep(6);
			}
			if (!strcmp(argv[i],"-nolimit")) {
				unlimitcore = true;
			}
		}
	}
	strlcpy(MyExecutable,argv[0],MAXBUF);
	
	if (InspIRCd() == ERROR)
	{
		log(DEFAULT,"main: daemon function bailed");
		printf("ERROR: could not initialise. Shutting down.\n");
		Exit(ERROR);
	}
	Exit(TRUE);
	return 0;
}

template<typename T> inline string ConvToStr(const T &in)
{
	stringstream tmp;
	if (!(tmp << in)) return string();
	return tmp.str();
}

/* re-allocates a nick in the user_hash after they change nicknames,
 * returns a pointer to the new user as it may have moved */

userrec* ReHashNick(char* Old, char* New)
{
	user_hash::iterator newnick;
	user_hash::iterator oldnick = clientlist.find(Old);

	log(DEBUG,"ReHashNick: %s %s",Old,New);
	
	if (!strcasecmp(Old,New))
	{
		log(DEBUG,"old nick is new nick, skipping");
		return oldnick->second;
	}
	
	if (oldnick == clientlist.end()) return NULL; /* doesnt exist */

	log(DEBUG,"ReHashNick: Found hashed nick %s",Old);

	clientlist[New] = new userrec();
	clientlist[New] = oldnick->second;
	clientlist.erase(oldnick);

	log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
	
	return clientlist[New];
}

/* adds or updates an entry in the whowas list */
void AddWhoWas(userrec* u)
{
	user_hash::iterator iter = whowas.find(u->nick);
	userrec *a = new userrec();
	strlcpy(a->nick,u->nick,NICKMAX);
	strlcpy(a->ident,u->ident,64);
	strlcpy(a->dhost,u->dhost,256);
	strlcpy(a->host,u->host,256);
	strlcpy(a->fullname,u->fullname,128);
	strlcpy(a->server,u->server,256);
	a->signon = u->signon;

	/* MAX_WHOWAS:   max number of /WHOWAS items
	 * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
	 *		 can be replaced by a newer one
	 */
	
	if (iter == whowas.end())
	{
		if (whowas.size() == WHOWAS_MAX)
		{
			for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
			{
				// 3600 seconds in an hour ;)
				if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
				{
					if (i->second) delete i->second;
					i->second = a;
					log(DEBUG,"added WHOWAS entry, purged an old record");
					return;
				}
			}
		}
		else
		{
			log(DEBUG,"added fresh WHOWAS entry");
			whowas[a->nick] = a;
		}
	}
	else
	{
		log(DEBUG,"updated WHOWAS entry");
		if (iter->second) delete iter->second;
		iter->second = a;
	}
}


/* add a client connection to the sockets list */
void AddClient(int socket, char* host, int port, bool iscached, char* ip)
{
	int i;
	int blocking = 1;
	char resolved[MAXBUF];
	string tempnick;
	char tn2[MAXBUF];
	user_hash::iterator iter;

	tempnick = ConvToStr(socket) + "-unknown";
	sprintf(tn2,"%d-unknown",socket);

	iter = clientlist.find(tempnick);

	if (iter != clientlist.end()) return;

	/*
	 * It is OK to access the value here this way since we know
	 * it exists, we just created it above.
	 *
	 * At NO other time should you access a value in a map or a
	 * hash_map this way.
	 */
	clientlist[tempnick] = new userrec();

	NonBlocking(socket);
	log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);

	clientlist[tempnick]->fd = socket;
	strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
	strncpy(clientlist[tempnick]->host, host,160);
	strncpy(clientlist[tempnick]->dhost, host,160);
	strncpy(clientlist[tempnick]->server, ServerName,256);
	strncpy(clientlist[tempnick]->ident, "unknown",9);
	clientlist[tempnick]->registered = 0;
	clientlist[tempnick]->signon = TIME+dns_timeout;
	clientlist[tempnick]->lastping = 1;
	clientlist[tempnick]->port = port;
	strncpy(clientlist[tempnick]->ip,ip,32);

	// set the registration timeout for this user
	unsigned long class_regtimeout = 90;
	int class_flood = 0;

	for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
	{
		if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
		{
			class_regtimeout = (unsigned long)i->registration_timeout;
			class_flood = i->flood;
			clientlist[tempnick]->pingmax = i->pingtime;
			break;
		}
	}

	clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
	clientlist[tempnick]->timeout = TIME+class_regtimeout;
	clientlist[tempnick]->flood = class_flood;

	for (int i = 0; i < MAXCHANS; i++)
	{
 		clientlist[tempnick]->chans[i].channel = NULL;
 		clientlist[tempnick]->chans[i].uc_modes = 0;
 	}

	if (clientlist.size() == MAXCLIENTS)
		kill_link(clientlist[tempnick],"No more connections allowed in this class");
		

        char* e = matches_exception(ip);
	if (!e)
	{
		char* r = matches_zline(ip);
		if (r)
		{
			char reason[MAXBUF];
			snprintf(reason,MAXBUF,"Z-Lined: %s",r);
			kill_link(clientlist[tempnick],reason);
		}
	}
}

// this function counts all users connected, wether they are registered or NOT.
int usercnt(void)
{
	return clientlist.size();
}

// this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
int registered_usercount(void)
{
        int c = 0;
        for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
        {
                if ((i->second->fd) && (isnick(i->second->nick))) c++;
        }
        return c;
}

int usercount_invisible(void)
{
	int c = 0;

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
	}
	return c;
}

int usercount_opers(void)
{
	int c = 0;

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
	}
	return c;
}

int usercount_unknown(void)
{
	int c = 0;

	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second->fd) && (i->second->registered != 7))
			c++;
	}
	return c;
}

long chancount(void)
{
	return chanlist.size();
}

long count_servs(void)
{
	int c = 0;
	//for (int j = 0; j < 255; j++)
	//{
	//	if (servers[j] != NULL)
	//		c++;
	//}
	return c;
}

long servercount(void)
{
	return count_servs()+1;
}

long local_count()
{
	int c = 0;
	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
	}
	return c;
}


void ShowMOTD(userrec *user)
{
        std::string WholeMOTD = "";
        if (!MOTD.size())
        {
                WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
                return;
        }
        WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
        for (int i = 0; i != MOTD.size(); i++)
        {
                WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
        }
        WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
        // only one write operation
        send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);

}

void ShowRULES(userrec *user)
{
	if (!RULES.size())
	{
		WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
		return;
	}
  	WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
	for (int i = 0; i != RULES.size(); i++)
	{
				WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
	}
	WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
}

/* shows the message of the day, and any other on-logon stuff */
void FullConnectUser(userrec* user)
{
        user->registered = 7;
        user->idle_lastmsg = TIME;
        log(DEBUG,"ConnectUser: %s",user->nick);

        if (strcmp(Passwd(user),"") && (!user->haspassed))
        {
                kill_link(user,"Invalid password");
                return;
        }
        if (IsDenied(user))
        {
                kill_link(user,"Unauthorised connection");
                return;
        }

        char match_against[MAXBUF];
        snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
	char* e = matches_exception(match_against);
	if (!e)
	{
        	char* r = matches_gline(match_against);
        	if (r)
        	{
                	char reason[MAXBUF];
                	snprintf(reason,MAXBUF,"G-Lined: %s",r);
                	kill_link_silent(user,reason);
                	return;
        	}
        	r = matches_kline(user->host);
        	if (r)
        	{
                	char reason[MAXBUF];
                	snprintf(reason,MAXBUF,"K-Lined: %s",r);
                	kill_link_silent(user,reason);
                	return;
	        }
	}

        WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
        WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
        WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
        WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
        WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
        // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
        std::stringstream v;
        v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
        v << " MAXBANS=60 NICKLEN=" << NICKMAX;
        v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
        v << std::string(Network);
        std::string data005 = v.str();
        FOREACH_MOD On005Numeric(data005);
        // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
        // so i'd better split it :)
        std::stringstream out(data005);
        std::string token = "";
        std::string line5 = "";
        int token_counter = 0;
        while (!out.eof())
        {
                out >> token;
                line5 = line5 + token + " ";
                token_counter++;
                if ((token_counter >= 13) || (out.eof() == true))
                {
                        WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
                        line5 = "";
                        token_counter = 0;
                }
        }
        ShowMOTD(user);
        FOREACH_MOD OnUserConnect(user);
        WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);

        char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"N %d %s %s %s %s +%s %s %s :%s",user->age,user->nick,user->host,user->dhost,user->ident,user->modes,user->ip,ServerName,user->fullname);
        NetSendToAll(buffer);
}

/* shows the message of the day, and any other on-logon stuff */
void ConnectUser(userrec *user)
{
	// dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
	if ((user->dns_done) && (user->registered >= 3))
	{
		FullConnectUser(user);
	}
}

void handle_version(char **parameters, int pcnt, userrec *user)
{
	char Revision[] = "$Revision$";

	char *s1 = Revision;
	char *savept;
	char *v1 = strtok_r(s1," ",&savept);
	s1 = savept;
	char *v2 = strtok_r(s1," ",&savept);
	s1 = savept;
	
	WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
}


// calls a handler function for a command

void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
{
		for (int i = 0; i < cmdlist.size(); i++)
		{
			if (!strcasecmp(cmdlist[i].command,commandname))
			{
				if (cmdlist[i].handler_function)
				{
					if (pcnt>=cmdlist[i].min_params)
					{
						if (strchr(user->modes,cmdlist[i].flags_needed))
						{
							cmdlist[i].handler_function(parameters,pcnt,user);
						}
					}
				}
			}
		}
}

void DoSplitEveryone()
{
	bool go_again = true;
	while (go_again)
	{
		go_again = false;
		for (int i = 0; i < 32; i++)
		{
			if (me[i] != NULL)
			{
				for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
				{
					if (strcasecmp(j->GetServerName().c_str(),ServerName))
					{
						j->routes.clear();
						j->CloseConnection();
						me[i]->connectors.erase(j);
						go_again = true;
						break;
					}
				}
			}
		}
	}
	log(DEBUG,"Removed server. Will remove clients...");
	// iterate through the userlist and remove all users on this server.
	// because we're dealing with a mesh, we dont have to deal with anything
	// "down-route" from this server (nice huh)
	go_again = true;
	char reason[MAXBUF];
	while (go_again)
	{
		go_again = false;
		for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
		{
			if (strcasecmp(u->second->server,ServerName))
			{
				snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
				kill_link(u->second,reason);
				go_again = true;
				break;
			}
		}
	}
}



char islast(const char* s)
{
	char c = '`';
	for (int j = 0; j < 32; j++)
 	{
 		if (me[j] != NULL)
 		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
  				{
  					c = '|';
				}
				if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
  				{
  					c = '`';
				}
			}
		}
	}
	return c;
}

long map_count(const char* s)
{
	int c = 0;
	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
	}
	return c;
}


void force_nickchange(userrec* user,const char* newnick)
{
	char nick[MAXBUF];
	int MOD_RESULT = 0;
	
	strcpy(nick,"");

	FOREACH_RESULT(OnUserPreNick(user,newnick));
	if (MOD_RESULT) {
		kill_link(user,"Nickname collision");
		return;
	}
	if (matches_qline(newnick))
	{
		kill_link(user,"Nickname collision");
		return;
	}
	
	if (user)
	{
		if (newnick)
		{
			strncpy(nick,newnick,MAXBUF);
		}
		if (user->registered == 7)
		{
			char* pars[1];
			pars[0] = nick;
			handle_nick(pars,1,user);
		}
	}
}
				

int process_parameters(char **command_p,char *parameters)
{
	int i = 0;
	int j = 0;
	int q = 0;
	q = strlen(parameters);
	if (!q)
	{
		/* no parameters, command_p invalid! */
		return 0;
	}
	if (parameters[0] == ':')
	{
		command_p[0] = parameters+1;
		return 1;
	}
	if (q)
	{
		if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
		{
			/* only one parameter */
			command_p[0] = parameters;
			if (parameters[0] == ':')
			{
				if (strchr(parameters,' ') != NULL)
				{
					command_p[0]++;
				}
			}
			return 1;
		}
	}
	command_p[j++] = parameters;
	for (int i = 0; i <= q; i++)
	{
		if (parameters[i] == ' ')
		{
			command_p[j++] = parameters+i+1;
			parameters[i] = '\0';
			if (command_p[j-1][0] == ':')
			{
				*command_p[j-1]++; /* remove dodgy ":" */
				break;
				/* parameter like this marks end of the sequence */
			}
		}
	}
	return j; /* returns total number of items in the list */
}

void process_command(userrec *user, char* cmd)
{
	char *parameters;
	char *command;
	char *command_p[127];
	char p[MAXBUF], temp[MAXBUF];
	int i, j, items, cmd_found;

	for (int i = 0; i < 127; i++)
		command_p[i] = NULL;

	if (!user)
	{
		return;
	}
	if (!cmd)
	{
		return;
	}
	if (!strcmp(cmd,""))
	{
		return;
	}
	
	int total_params = 0;
	if (strlen(cmd)>2)
	{
		for (int q = 0; q < strlen(cmd)-1; q++)
		{
			if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
			{
				total_params++;
				// found a 'trailing', we dont count them after this.
				break;
			}
			if (cmd[q] == ' ')
				total_params++;
		}
	}
	
	// another phidjit bug...
	if (total_params > 126)
	{
		//kill_link(user,"Protocol violation (1)");
		WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
		return;
	}
	
	strlcpy(temp,cmd,MAXBUF);

	std::string tmp = cmd;
	for (int i = 0; i <= MODCOUNT; i++)
	{
		std::string oldtmp = tmp;
		modules[i]->OnServerRaw(tmp,true,user);
		if (oldtmp != tmp)
		{
			log(DEBUG,"A Module changed the input string!");
			log(DEBUG,"New string: %s",tmp.c_str());
			log(DEBUG,"Old string: %s",oldtmp.c_str());
			break;
		}
	}
  	strlcpy(cmd,tmp.c_str(),MAXBUF);
	strlcpy(temp,cmd,MAXBUF);

	if (!strchr(cmd,' '))
	{
		/* no parameters, lets skip the formalities and not chop up
		 * the string */
		log(DEBUG,"About to preprocess command with no params");
		items = 0;
		command_p[0] = NULL;
		parameters = NULL;
		for (int i = 0; i <= strlen(cmd); i++)
		{
			cmd[i] = toupper(cmd[i]);
		}
		log(DEBUG,"Preprocess done length=%d",strlen(cmd));
		command = cmd;
	}
	else
	{
		strcpy(cmd,"");
		j = 0;
		/* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
		for (int i = 0; i < strlen(temp); i++)
		{
			if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
			{
				cmd[j++] = temp[i];
				cmd[j] = 0;
			}
		}
		/* split the full string into a command plus parameters */
		parameters = p;
		strcpy(p," ");
		command = cmd;
		if (strchr(cmd,' '))
		{
			for (int i = 0; i <= strlen(cmd); i++)
			{
				/* capitalise the command ONLY, leave params intact */
				cmd[i] = toupper(cmd[i]);
				/* are we nearly there yet?! :P */
				if (cmd[i] == ' ')
				{
					command = cmd;
					parameters = cmd+i+1;
					cmd[i] = '\0';
					break;
				}
			}
		}
		else
		{
			for (int i = 0; i <= strlen(cmd); i++)
			{
				cmd[i] = toupper(cmd[i]);
			}
		}

	}
	cmd_found = 0;
	
	if (strlen(command)>MAXCOMMAND)
	{
		//kill_link(user,"Protocol violation (2)");
		WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
		return;
	}
	
	for (int x = 0; x < strlen(command); x++)
	{
		if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
		{
			if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
			{
				if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
				{
					//kill_link(user,"Protocol violation (3)");
					WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
					return;
				}
			}
		}
	}

	for (int i = 0; i != cmdlist.size(); i++)
	{
		if (strcmp(cmdlist[i].command,""))
		{
			if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
			{
				log(DEBUG,"Found matching command");

				if (parameters)
				{
					if (strcmp(parameters,""))
					{
						items = process_parameters(command_p,parameters);
					}
					else
					{
						items = 0;
						command_p[0] = NULL;
					}
				}
				else
				{
					items = 0;
					command_p[0] = NULL;
				}
				
				if (user)
				{
					log(DEBUG,"Processing command");
					
					/* activity resets the ping pending timer */
					user->nping = TIME + user->pingmax;
					if ((items) < cmdlist[i].min_params)
					{
					        log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
						WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
						return;
					}
					if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
					{
					        log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
						WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
						cmd_found = 1;
						return;
					}
					if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
					{
					        log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
						WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
						cmd_found = 1;
						return;
					}
					/* if the command isnt USER, PASS, or NICK, and nick is empty,
					 * deny command! */
					if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
					{
						if ((!isnick(user->nick)) || (user->registered != 7))
						{
						        log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
							WriteServ(user->fd,"451 %s :You have not registered",command);
							return;
						}
					}
					if ((user->registered == 7) && (!strchr(user->modes,'o')))
					{
						char* mycmd;
						char* savept2;
						mycmd = strtok_r(DisabledCommands," ",&savept2);
						while (mycmd)
						{
							if (!strcasecmp(mycmd,command))
							{
								// command is disabled!
								WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
								return;
							}
							mycmd = strtok_r(NULL," ",&savept2);
						}
        

					}
					if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
					{
					        log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
						if (cmdlist[i].handler_function)
						{
							/* ikky /stats counters */
							if (temp)
							{
								if (user)
								{
									user->bytes_in += strlen(temp);
									user->cmds_in++;
									user->bytes_out+=strlen(temp);
									user->cmds_out++;
								}
								cmdlist[i].use_count++;
								cmdlist[i].total_bytes+=strlen(temp);
							}

							/* WARNING: nothing may come after the
							 * command handler call, as the handler
							 * may free the user structure! */

							cmdlist[i].handler_function(command_p,items,user);
						}
						return;
					}
					else
					{
					        log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
						WriteServ(user->fd,"451 %s :You have not registered",command);
						return;
					}
				}
				cmd_found = 1;
			}
		}
	}
	if ((!cmd_found) && (user))
	{
	        log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
		WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
	}
}


void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
{
	command_t comm;
	/* create the command and push it onto the table */	
	strlcpy(comm.command,cmd,MAXBUF);
	strlcpy(comm.source,source,MAXBUF);
	comm.handler_function = f;
	comm.flags_needed = flags;
	comm.min_params = minparams;
	comm.use_count = 0;
	comm.total_bytes = 0;
	cmdlist.push_back(comm);
	log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
}

bool removecommands(const char* source)
{
	bool go_again = true;
	while (go_again)
	{
		go_again = false;
		for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
		{
			if (!strcmp(i->source,source))
			{
				log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
				cmdlist.erase(i);
				go_again = true;
				break;
			}
		}
	}
	return true;
}

void SetupCommandTable(void)
{
	createcommand("USER",handle_user,0,4,"<core>");
	createcommand("NICK",handle_nick,0,1,"<core>");
	createcommand("QUIT",handle_quit,0,0,"<core>");
	createcommand("VERSION",handle_version,0,0,"<core>");
	createcommand("PING",handle_ping,0,1,"<core>");
	createcommand("PONG",handle_pong,0,1,"<core>");
	createcommand("ADMIN",handle_admin,0,0,"<core>");
	createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
	createcommand("INFO",handle_info,0,0,"<core>");
	createcommand("TIME",handle_time,0,0,"<core>");
	createcommand("WHOIS",handle_whois,0,1,"<core>");
	createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
	createcommand("NOTICE",handle_notice,0,2,"<core>");
	createcommand("JOIN",handle_join,0,1,"<core>");
	createcommand("NAMES",handle_names,0,0,"<core>");
	createcommand("PART",handle_part,0,1,"<core>");
	createcommand("KICK",handle_kick,0,2,"<core>");
	createcommand("MODE",handle_mode,0,1,"<core>");
	createcommand("TOPIC",handle_topic,0,1,"<core>");
	createcommand("WHO",handle_who,0,1,"<core>");
	createcommand("MOTD",handle_motd,0,0,"<core>");
	createcommand("RULES",handle_rules,0,0,"<core>");
	createcommand("OPER",handle_oper,0,2,"<core>");
	createcommand("LIST",handle_list,0,0,"<core>");
	createcommand("DIE",handle_die,'o',1,"<core>");
	createcommand("RESTART",handle_restart,'o',1,"<core>");
	createcommand("KILL",handle_kill,'o',2,"<core>");
	createcommand("REHASH",handle_rehash,'o',0,"<core>");
	createcommand("LUSERS",handle_lusers,0,0,"<core>");
	createcommand("STATS",handle_stats,0,1,"<core>");
	createcommand("USERHOST",handle_userhost,0,1,"<core>");
	createcommand("AWAY",handle_away,0,0,"<core>");
	createcommand("ISON",handle_ison,0,0,"<core>");
	createcommand("SUMMON",handle_summon,0,0,"<core>");
	createcommand("USERS",handle_users,0,0,"<core>");
	createcommand("INVITE",handle_invite,0,2,"<core>");
	createcommand("PASS",handle_pass,0,1,"<core>");
	createcommand("TRACE",handle_trace,'o',0,"<core>");
	createcommand("WHOWAS",handle_whowas,0,1,"<core>");
	createcommand("CONNECT",handle_connect,'o',1,"<core>");
	createcommand("SQUIT",handle_squit,'o',0,"<core>");
	createcommand("MODULES",handle_modules,0,0,"<core>");
	createcommand("LINKS",handle_links,0,0,"<core>");
	createcommand("MAP",handle_map,0,0,"<core>");
	createcommand("KLINE",handle_kline,'o',1,"<core>");
	createcommand("GLINE",handle_gline,'o',1,"<core>");
	createcommand("ZLINE",handle_zline,'o',1,"<core>");
	createcommand("QLINE",handle_qline,'o',1,"<core>");
	createcommand("ELINE",handle_eline,'o',1,"<core>");
	createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
	createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
	createcommand("SERVER",handle_server,0,0,"<core>");
}

void process_buffer(const char* cmdbuf,userrec *user)
{
	if (!user)
	{
		log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
		return;
	}
	char cmd[MAXBUF];
	int i;
	if (!cmdbuf)
	{
		log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
		return;
	}
	if (!strcmp(cmdbuf,""))
	{
		return;
	}
	while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces

	strlcpy(cmd,cmdbuf,MAXBUF);
	if (!strcmp(cmd,""))
	{
		return;
	}
	if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
	{
		cmd[strlen(cmd)-1] = '\0';
	}
	if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
	{
		cmd[strlen(cmd)-1] = '\0';
	}

	while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
	{
		cmd[strlen(cmd)-1] = '\0';
	}

	if (!strcmp(cmd,""))
	{
		return;
	}
        log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
	tidystring(cmd);
	if ((user) && (cmd))
	{
		process_command(user,cmd);
	}
}

void DoSync(serverrec* serv, char* tcp_host)
{
	char data[MAXBUF];
	log(DEBUG,"Sending sync");
	// send start of sync marker: Y <timestamp>
	// at this point the ircd receiving it starts broadcasting this netburst to all ircds
	// except the ones its receiving it from.
	snprintf(data,MAXBUF,"Y %d",TIME);
	serv->SendPacket(data,tcp_host);
	// send users and channels
	for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
	{
		snprintf(data,MAXBUF,"N %d %s %s %s %s +%s %s %s :%s",u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->server,u->second->fullname);
		serv->SendPacket(data,tcp_host);
		if (strchr(u->second->modes,'o'))
		{
			snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
			serv->SendPacket(data,tcp_host);
		}
		for (int i = 0; i <= MODCOUNT; i++)
		{
			string_list l = modules[i]->OnUserSync(u->second);
			for (int j = 0; j < l.size(); j++)
			{
				strlcpy(data,l[j].c_str(),MAXBUF);
  				serv->SendPacket(data,tcp_host);
  			}
  		}
		if (strcmp(chlist(u->second),""))
		{
			snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
			serv->SendPacket(data,tcp_host);
		}
	}
	// send channel modes, topics etc...
	for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
	{
		snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
		serv->SendPacket(data,tcp_host);
		for (int i = 0; i <= MODCOUNT; i++)
		{
			string_list l = modules[i]->OnChannelSync(c->second);
			for (int j = 0; j < l.size(); j++)
			{
				strlcpy(data,l[j].c_str(),MAXBUF);
  				serv->SendPacket(data,tcp_host);
  			}
  		}
		if (strcmp(c->second->topic,""))
		{
			snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
			serv->SendPacket(data,tcp_host);
		}
		// send current banlist
		
		for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
		{
			snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
			serv->SendPacket(data,tcp_host);
		}
	}
	// sync global zlines, glines, etc
	sync_xlines(serv,tcp_host);

	for (int j = 0; j < 32; j++)
	{
		if (me[j] != NULL)
		{
			for (int k = 0; k < me[j]->connectors.size(); k++)
			{
				if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
				{
					snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
					serv->SendPacket(data,tcp_host);
					NetSendMyRoutingTable();
				}
			}
		}
	}

	snprintf(data,MAXBUF,"F %d",TIME);
	serv->SendPacket(data,tcp_host);
	log(DEBUG,"Sent sync");
	// ircd sends its serverlist after the end of sync here
}


void NetSendMyRoutingTable()
{
	// send out a line saying what is reachable to us.
	// E.g. if A is linked to B C and D, send out:
	// $ A B C D
	// if its only linked to B and D send out:
	// $ A B D
	// if it has no links, dont even send out the line at all.
	char buffer[MAXBUF];
	snprintf(buffer,MAXBUF,"$ %s",ServerName);
	bool sendit = false;
	for (int i = 0; i < 32; i++)
	{
		if (me[i] != NULL)
		{
			for (int j = 0; j < me[i]->connectors.size(); j++)
			{
				if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
				{
					strlcat(buffer," ",MAXBUF);
					strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
					sendit = true;
				}
			}
		}
	}
	if (sendit)
		NetSendToAll(buffer);
}


void DoSplit(const char* params)
{
	bool go_again = true;
	while (go_again)
	{
		go_again = false;
		for (int i = 0; i < 32; i++)
		{
			if (me[i] != NULL)
			{
				for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
				{
					if (!strcasecmp(j->GetServerName().c_str(),params))
					{
						j->routes.clear();
						j->CloseConnection();
						me[i]->connectors.erase(j);
						go_again = true;
						break;
					}
				}
			}
		}
	}
	log(DEBUG,"Removed server. Will remove clients...");
	// iterate through the userlist and remove all users on this server.
	// because we're dealing with a mesh, we dont have to deal with anything
	// "down-route" from this server (nice huh)
	go_again = true;
	char reason[MAXBUF];
	snprintf(reason,MAXBUF,"%s %s",ServerName,params);
	while (go_again)
	{
		go_again = false;
		for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
		{
			if (!strcasecmp(u->second->server,params))
			{
				kill_link(u->second,reason);
				go_again = true;
				break;
			}
		}
	}
}

// removes a server. Will NOT remove its users!

void RemoveServer(const char* name)
{
	bool go_again = true;
	while (go_again)
	{
		go_again = false;
		for (int i = 0; i < 32; i++)
		{
			if (me[i] != NULL)
			{
				for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
				{
					if (!strcasecmp(j->GetServerName().c_str(),name))
					{
						j->routes.clear();
						j->CloseConnection();
						me[i]->connectors.erase(j);
						go_again = true;
						break;
					}
				}
			}
		}
	}
}


int reap_counter = 0;
char MODERR[MAXBUF];

char* ModuleError()
{
	return MODERR;
}

void erase_factory(int j)
{
	int v = 0;
	for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
	{
		if (v == j)
		{
                	factory.erase(t);
                 	factory.push_back(NULL);
                 	return;
           	}
		v++;
     	}
}

void erase_module(int j)
{
	int v = 0;
	for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
        {
                if (v == j)
                {
			delete *m;
                        modules.erase(m);
                        modules.push_back(NULL);
			break;
                }
		v++;
        }
	int v2 = 0;
        for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
        {
                if (v2 == j)
                {
                       module_names.erase(v);
                       break;
                }
		v2++;
        }

}

bool UnloadModule(const char* filename)
{
	for (int j = 0; j != module_names.size(); j++)
	{
		if (module_names[j] == std::string(filename))
		{
			if (modules[j]->GetVersion().Flags & VF_STATIC)
			{
				log(DEFAULT,"Failed to unload STATIC module %s",filename);
				snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
				return false;
			}
			// found the module
			log(DEBUG,"Deleting module...");
			erase_module(j);
			log(DEBUG,"Erasing module entry...");
			erase_factory(j);
                        log(DEBUG,"Removing dependent commands...");
                        removecommands(filename);
			log(DEFAULT,"Module %s unloaded",filename);
			MODCOUNT--;
			return true;
		}
	}
	log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
	snprintf(MODERR,MAXBUF,"Module not loaded");
	return false;
}

bool DirValid(char* dirandfile)
{
	char work[MAXBUF];
	strlcpy(work,dirandfile,MAXBUF);
	int p = strlen(work);
	// we just want the dir
	while (strlen(work))
	{
		if (work[p] == '/')
		{
			work[p] = '\0';
			break;
		}
		work[p--] = '\0';
	}
	log(DEBUG,"Dir valid: %s",work);
	char buffer[MAXBUF], otherdir[MAXBUF];
	// Get the current working directory
	if( getcwd( buffer, MAXBUF ) == NULL )
		return false;
	chdir(work);
	if( getcwd( otherdir, MAXBUF ) == NULL )
		return false;
	chdir(buffer);
	log(DEBUG,"Dir is really: %s",otherdir);
	if (strlen(otherdir) >= strlen(work))
	{
		otherdir[strlen(work)] = '\0';
		log(DEBUG,"Compare: '%s' -> '%s'",otherdir,work);
		if (!strcmp(otherdir,work))
		{
			log(DEBUG,"Match ok");
			return true;
		}
		log(DEBUG,"No match");
		return false;
	}
	else return false;
}

bool LoadModule(const char* filename)
{
	char modfile[MAXBUF];
	snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
	if (!DirValid(modfile))
	{
		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;
	}
	log(DEBUG,"Loading module: %s",modfile);
        if (FileExists(modfile))
        {
		for (int j = 0; j < module_names.size(); j++)
		{
			if (module_names[j] == std::string(filename))
			{
				log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
				snprintf(MODERR,MAXBUF,"Module already loaded");
				return false;
			}
		}
		ircd_module* a = new ircd_module(modfile);
                factory[MODCOUNT+1] = a;
                if (factory[MODCOUNT+1]->LastError())
                {
                        log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
			snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
			MODCOUNT--;
			return false;
                }
                if (factory[MODCOUNT+1]->factory)
                {
			Module* m = factory[MODCOUNT+1]->factory->CreateModule();
                        modules[MODCOUNT+1] = m;
                        /* save the module and the module's classfactory, if
                         * this isnt done, random crashes can occur :/ */
                        module_names.push_back(filename);
                }
		else
                {
                        log(DEFAULT,"Unable to load %s",modfile);
			snprintf(MODERR,MAXBUF,"Factory function failed!");
			return false;
                }
        }
        else
        {
                log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
		snprintf(MODERR,MAXBUF,"Module file could not be found");
		return false;
        }
	MODCOUNT++;
	return true;
}

int InspIRCd(void)
{
	struct sockaddr_in client,server;
	char addrs[MAXBUF][255];
	int incomingSockfd, result = TRUE;
	socklen_t length;
	int count = 0;
	int selectResult = 0, selectResult2 = 0;
	char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
	char resolvedHost[MAXBUF];
	fd_set selectFds;
	timeval tv;

	log_file = fopen("ircd.log","a+");
	if (!log_file)
	{
		printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
		Exit(ERROR);
	}

	log(DEBUG,"InspIRCd: startup: begin");
	log(DEBUG,"$Id$");
	if (geteuid() == 0)
	{
		printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
		Exit(ERROR);
		log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
	}
	SetupCommandTable();
	log(DEBUG,"InspIRCd: startup: default command table set up");
	
	ReadConfig(true,NULL);
	if (strcmp(DieValue,"")) 
	{ 
		printf("WARNING: %s\n\n",DieValue);
		log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
		exit(0); 
	}  
	log(DEBUG,"InspIRCd: startup: read config");
	  
	int count2 = 0, count3 = 0;

	for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
	{
		ConfValue("bind","port",count,configToken,&config_f);
		ConfValue("bind","address",count,Addr,&config_f);
		ConfValue("bind","type",count,Type,&config_f);
		if (!strcmp(Type,"servers"))
		{
			char Default[MAXBUF];
			strcpy(Default,"no");
			ConfValue("bind","default",count,Default,&config_f);
			if (strchr(Default,'y'))
			{
				defaultRoute = count3;
				log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
			}
			me[count3] = new serverrec(ServerName,100L,false);
			if (!me[count3]->CreateListener(Addr,atoi(configToken)))
			{
				log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
			}
			else
			{
				count3++;
			}
		}
		else
		{
			ports[count2] = atoi(configToken);
			strlcpy(addrs[count2],Addr,256);
			count2++;
		}
		log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
	}
	portCount = count2;
	UDPportCount = count3;
	  
	log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
	
	log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
	
	printf("\n");
	
	/* BugFix By Craig! :p */
	MODCOUNT = -1;
	for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
	{
		ConfValue("module","name",count2,configToken,&config_f);
		printf("Loading module... \033[1;37m%s\033[0;37m\n",configToken);
		if (!LoadModule(configToken))
		{
			log(DEBUG,"Exiting due to a module loader error.");
			printf("There was an error loading a module: %s\n",ModuleError());
			Exit(0);
		}
	}
	log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
	
	printf("\nInspIRCd is now running!\n");
	
	startup_time = time(NULL);
	  
	if (nofork)
	{
		log(VERBOSE,"Not forking as -nofork was specified");
	}
	else
	{
		if (DaemonSeed() == ERROR)
		{
			log(DEFAULT,"InspIRCd: startup: can't daemonise");
	  		printf("ERROR: could not go into daemon mode. Shutting down.\n");
			Exit(ERROR);
	  	}
	}

	char PID[MAXBUF];
	ConfValue("pid","file",0,PID,&config_f);
	WritePID(PID);
	  
	  
	/* setup select call */
	FD_ZERO(&selectFds);
	log(DEBUG,"InspIRCd: startup: zero selects");
	log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
	
	for (count = 0; count < portCount; count++)
	{
		if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
		{
			log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
			return(ERROR);
		}
		if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
		{
			log(DEFAULT,"InspIRCd: startup: failed to bind port %d",ports[count]);
		}
		else	/* well we at least bound to one socket so we'll continue */
		{
			boundPortCount++;
		}
	}
	
	log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
	  
	/* if we didn't bind to anything then abort */
	if (boundPortCount == 0)
	{
		log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
		return (ERROR);
	}
	

	length = sizeof (client);
	char udp_msg[MAXBUF], tcp_host[MAXBUF];

        fd_set serverfds;
        timeval tvs;
        tvs.tv_usec = 7000L;
        tvs.tv_sec = 0;
	tv.tv_sec = 0;
	tv.tv_usec = 7000L;
        char data[10240];
	timeval tval;
	fd_set sfd;
        tval.tv_usec = 7000L;
        tval.tv_sec = 0;
        int total_in_this_set = 0;
	int v = 0;
	bool expire_run = false;
	  
	/* main loop, this never returns */
	for (;;)
	{
#ifdef _POSIX_PRIORITY_SCHEDULING
		sched_yield();
#endif
                // poll dns queue
                dns_poll();
		FD_ZERO(&sfd);

		// we only read time() once per iteration rather than tons of times!
		TIME = time(NULL);

		// *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
		// them in a list, then reap the list every second or so.
		if (((TIME % 5) == 0) && (!expire_run))
		{
			expire_lines();
			FOREACH_MOD OnBackgroundTimer(TIME);
			expire_run = true;
			continue;
		}
		if ((TIME % 5) == 1)
			expire_run = false;
		if (reap_counter>300)
  		{
			if (fd_reap.size() > 0)
   			{
				for( int n = 0; n < fd_reap.size(); n++)
				{
					if ((fd_reap[n] > -1))
					{
						close(fd_reap[n]);
						shutdown (fd_reap[n],2);
					}
				}
			}
			fd_reap.clear();
			reap_counter=0;
		}
		reap_counter++;
		
		// fix by brain - this must be below any manipulation of the hashmap by modules
		user_hash::iterator count2 = clientlist.begin();

		FD_ZERO(&serverfds);
		
		for (int x = 0; x != UDPportCount; x++)
		{
			if (me[x])
				FD_SET(me[x]->fd, &serverfds);
		}
		
		// serverFds timevals went here
		
		tvs.tv_usec = 7000L;
		tvs.tv_sec = 0;
		int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
		if (servresult > 0)
		{
			for (int x = 0; x != UDPportCount; x++)
			{
				if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
				{
					char remotehost[MAXBUF],resolved[MAXBUF];
					length = sizeof (client);
					incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
					if (incomingSockfd != -1)
					{
						strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
						if(CleanAndResolve(resolved, remotehost) != TRUE)
						{
							strlcpy(resolved,remotehost,MAXBUF);
						}
						// add to this connections ircd_connector vector
						// *FIX* - we need the LOCAL port not the remote port in &client!
						me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
					}
				}
			}
		}
     
		for (int x = 0; x < UDPportCount; x++)
		{
			std::deque<std::string> msgs;
			msgs.clear();
			if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
			{
				for (int ctr = 0; ctr < msgs.size(); ctr++)
				{
					char udp_msg[MAXBUF];
					strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
					log(DEBUG,"Processing: %s",udp_msg);
					if (strlen(udp_msg)<1)
    					{
						log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
						break;
					}
					// during a netburst, send all data to all other linked servers
					if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
					{
						if (is_uline(tcp_host))
						{
							if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
							{
								NetSendToAllExcept(tcp_host,udp_msg);
							}
						}
						else
							NetSendToAllExcept(tcp_host,udp_msg);
					}
		                        std::string msg = udp_msg;
		                        FOREACH_MOD OnPacketReceive(msg,tcp_host);
		                        strlcpy(udp_msg,msg.c_str(),MAXBUF);
					handle_link_packet(udp_msg, tcp_host, me[x]);
				}
				goto label;
			}
		}
	

	while (count2 != clientlist.end())
	{
		FD_ZERO(&sfd);
		total_in_this_set = 0;

		user_hash::iterator xcount = count2;
		user_hash::iterator endingiter = count2;

		if (count2 == clientlist.end()) break;

		if (count2->second)
		if (count2->second->fd != 0)
		{
			// assemble up to 64 sockets into an fd_set
			// to implement a pooling mechanism.
			//
			// This should be up to 64x faster than the
			// old implementation.
			while (total_in_this_set < 64)
			{
				if (count2 != clientlist.end())
				{
					// we don't check the state of remote users.
					if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
					{
						FD_SET (count2->second->fd, &sfd);

						// registration timeout -- didnt send USER/NICK/HOST in the time specified in
						// their connection class.
						if ((TIME > count2->second->timeout) && (count2->second->registered != 7)) 
						{
						  	log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
							kill_link(count2->second,"Registration timeout");
							goto label;
						}
						if ((TIME > count2->second->signon) && (count2->second->registered == 3))
						{
							count2->second->dns_done = true;
							FullConnectUser(count2->second);
							goto label;
						}
		                                if ((count2->second->dns_done) && (count2->second->registered == 3)) // both NICK and USER... and DNS
		                                {
		                                        FullConnectUser(count2->second);
							goto label;
		                                }
						if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
						{
							if ((!count2->second->lastping) && (count2->second->registered == 7))
							{
							  	log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
								kill_link(count2->second,"Ping timeout");
								goto label;
							}
							Write(count2->second->fd,"PING :%s",ServerName);
						  	log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
							count2->second->lastping = 0;
							count2->second->nping = TIME+count2->second->pingmax;	// was hard coded to 120
						}
					}
					count2++;
					total_in_this_set++;
				}
				else break;
			}
   
	       		endingiter = count2;
       			count2 = xcount; // roll back to where we were
        
        		v = 0;

			// tvals defined here

			tval.tv_usec = 7000L;
			selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
			
			// now loop through all of the items in this pool if any are waiting
			//if (selectResult2 > 0)
			for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
			{

#ifdef _POSIX_PRIORITY_SCHEDULING
				sched_yield();
#endif

				result = EAGAIN;
				if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
				{
					memset(data, 0, 10240);
					result = read(count2a->second->fd, data, 10240);
					
					if (result)
					{
						userrec* current = count2a->second;
						int currfd = current->fd;
						char* l = strtok(data,"\n");
						int floodlines = 0;
						while (l)
						{
							floodlines++;
							if ((floodlines > current->flood) && (current->flood != 0))
							{
							  	log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
							  	WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
								kill_link(current,"Excess flood");
								goto label;
							}
							char sanitized[NetBufferSize];
							memset(sanitized, 0, NetBufferSize);
							int ptt = 0;
							for (int pt = 0; pt < strlen(l); pt++)
							{
								if (l[pt] != '\r')
								{
									sanitized[ptt++] = l[pt];
								}
							}
							sanitized[ptt] = '\0';
							if (strlen(sanitized))
							{


								// we're gonna re-scan to check if the nick is gone, after every
								// command - if it has, we're gonna bail
								bool find_again = false;
								process_buffer(sanitized,current);
	
								// look for the user's record in case it's changed
								for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
								{
									if (c2->second->fd == currfd)
									{
										// found again, update pointer
										current == c2->second;
										find_again = true;
										break;
									}
								}
								if (!find_again)
									goto label;

							}
							l = strtok(NULL,"\n");
						}
						goto label;
					}

					if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
					{
						log(DEBUG,"killing: %s",count2a->second->nick);
						kill_link(count2a->second,strerror(errno));
						goto label;
					}
				}
				// result EAGAIN means nothing read
				if (result == EAGAIN)
				{
				}
				else
				if (result == 0)
				{
				  	if (count2->second)
				  	{
					  	log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
						kill_link(count2a->second,"Client exited");
						// must bail here? kill_link removes the hash, corrupting the iterator
						log(DEBUG,"Bailing from client exit");
						goto label;
					}
				}
				else if (result > 0)
				{
				}
			}
		}
		for (int q = 0; q < total_in_this_set; q++)
		{
			// there is no iterator += operator :(
			//if (count2 != clientlist.end())
			//{
				count2++;
			//}
		}
	}
	
	// set up select call
	for (count = 0; count < boundPortCount; count++)
	{
		FD_SET (openSockfd[count], &selectFds);
	}

	tv.tv_usec = 7000L;
	selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);

	/* select is reporting a waiting socket. Poll them all to find out which */
	if (selectResult > 0)
	{
		char target[MAXBUF], resolved[MAXBUF];
		for (count = 0; count < boundPortCount; count++)		
		{
			if (FD_ISSET (openSockfd[count], &selectFds))
			{
				length = sizeof (client);
				incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
			      
				strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
				strlcpy (resolved, target, MAXBUF);
			
				if (incomingSockfd < 0)
				{
					WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
					log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
				}
				else
				{
					AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
					log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
				}
				goto label;
			}
		}
	}
	label:
	if (0) {};
}
/* not reached */
close (incomingSockfd);
}