inspircd/src/inspircd.cpp

/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  Inspire is copyright (C) 2002-2003 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.
 *
 * ---------------------------------------------------
 
 $Log$
 Revision 1.3  2003/01/25 20:17:53  brain
 Fixed WHOWAS memory leak

 Revision 1.2  2003/01/25 20:00:45  brain
 Added /WHOWAS

 Revision 1.1.1.1  2003/01/23 19:45:58  brain
 InspIRCd second source tree

 Revision 1.56  2003/01/22 20:49:16  brain
 Added FileReader file-caching class
 Changed m_randquote to use FileReader class

 Revision 1.55  2003/01/21 16:56:19  brain
 Fixed a few minor bugs

 Revision 1.54  2003/01/21 02:07:10  brain
 optimisations galore!

 Revision 1.53  2003/01/21 00:18:40  brain
 fixed random crash on kill_link (AGAIN) - was /stats
 improved speed 10x (because i can...)

 Revision 1.52  2003/01/19 20:12:24  brain
 Fixed ident max length to 10

 Revision 1.51  2003/01/18 22:02:11  brain
 fixed multiple /MODE +l bugs (thanks to akky and BOFH bugging meh!)

 Revision 1.50  2003/01/18 01:19:14  brain
 Added code to tidy up bans (e.g. max nick length) - i blame mIRC!

 Revision 1.49  2003/01/17 22:03:57  brain
 Fixed dodgy mode glitches (the ones Craig loves to play with, awww)

 Revision 1.48  2003/01/17 21:20:43  brain
 Implemented usermode +s

 Revision 1.47  2003/01/17 21:13:40  brain
 Added channel modes, +k, +l, +i, +m etc
 Added user and channel modes +i, +p, +s

 Revision 1.46  2003/01/17 18:44:27  brain
 Implemented channel mode +m

 Revision 1.45  2003/01/17 18:26:42  brain
 added /TRACE command

 Revision 1.44  2003/01/17 15:21:03  brain
 Fixed: /LUSERS cant count :P

 Revision 1.43  2003/01/17 13:21:38  brain
 Added CONNECT ALLOW and CONNECT DENY config tags
 Added PASS command

 Revision 1.42  2003/01/17 10:37:55  brain
 Added /INVITE command and relevent structures

 Revision 1.41  2003/01/16 20:11:55  brain
 fixed some ugly pointer bugs (thanks dblack and a|KK|y!)

 Revision 1.40  2003/01/16 08:31:44  brain
 Fixed parameter error in QUIT code (was showing junk chars on BSD)

 Revision 1.39  2003/01/15 22:47:44  brain
 Changed user and channel structs to classes (finally)

 Revision 1.38  2003/01/15 20:56:58  brain
 Added wildcard support
 Added channel bans

 Revision 1.37  2003/01/15 16:08:42  brain
 Attempted to fix closed client sessions not being detected

 Revision 1.36  2003/01/15 09:36:13  brain
 added pause= value to /die and /restart in config

 Revision 1.35  2003/01/14 22:08:31  brain
 attemted to fix weird crash on /kill

 Revision 1.34  2003/01/14 21:44:25  brain
 Added /USERS stub
 Added /SUMMON stub
 Changed optimisation to -O3 (much faster!)

 Revision 1.33  2003/01/14 21:14:30  brain
 added /ISON command (for mIRC etc basic notify)

 Revision 1.32  2003/01/14 20:55:02  brain
 Fixed more param crunching bugs
 Added /AWAY

 Revision 1.31  2003/01/14 00:46:02  brain
 Added m_cloaking.so module, provides host masking

 Revision 1.30  2003/01/13 22:30:50  brain
 Added Admin class (holds /admin info for modules)
 Added methods to Server class

 Revision 1.29  2003/01/13 00:43:29  brain
 Added Server class
 Added more code to example module demonstrating use of Server class

 Revision 1.28  2003/01/12 17:40:44  brain
 ./configure improved by Craig (better prompts, dir creation)
 '/stats z' added detail

 Revision 1.27  2003/01/12 16:49:53  brain
 Added '/stats z'

 Revision 1.26  2003/01/12 15:01:18  brain
 Added hostname/ip caching to speed up connects

 Revision 1.25  2003/01/11 21:39:57  brain
 Made ircd cache message of the day in a vector (faster!)
 Added support for multiple lines of /NAMES on large channels

 Revision 1.24  2003/01/11 19:00:10  brain
 Added /USERHOST command

 Revision 1.23  2003/01/11 17:57:28  brain
 Added '/STATS O'
 Added more module error checking

 Revision 1.22  2003/01/11 00:48:44  brain
 removed random debug output

 Revision 1.21  2003/01/11 00:06:46  brain
 Fixed random crash on nickchange
 Fine tuned ability to handle >300 users

 Revision 1.20  2003/01/09 22:24:59  brain
 added '/stats L' (connect-info)

 Revision 1.19  2003/01/09 21:38:51  brain
 '/stats u' support added (server uptime)

 Revision 1.18  2003/01/09 21:09:50  brain
 added '/stats M' command

 Revision 1.17  2003/01/08 22:11:38  brain

 Added extra dynamic module support, new methods to Module class

 Revision 1.16  2003/01/08 17:48:48  brain

 fixed "user lingering" problem in kill_link

 Revision 1.15  2003/01/07 23:17:51  brain

 Fixed wallops and command parameter counting bugs

 Revision 1.14  2003/01/07 20:47:34  brain

 Fixes random crash on nickchange (must keep classfactory pointers!)

 Revision 1.13  2003/01/07 19:57:56  brain

 Dynamix module support, preliminary release

 Revision 1.12  2003/01/07 01:01:30  brain

 Changed command table to a vector of command_t types

 Revision 1.11  2003/01/06 23:43:30  brain

 extra debug output

 Revision 1.10  2003/01/06 23:38:29  brain

 just playing with header tags


 * ---------------------------------------------------
 */

/* Now with added unF! ;) */

#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>
#include <hash_map.h>
#include <sstream>
#include <vector>
#include <errno.h>
#include <deque>
#include "users.h"
#include "ctables.h"
#include "globals.h"
#include "modules.h"
#include "dynamic.h"
#include "wildcard.h"

using namespace std;

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];
int debugging =  0;
int MODCOUNT  = -1;
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);

template<> struct hash<in_addr>
{
	size_t operator()(const struct in_addr &a) const
	{
		size_t q;
		memcpy(&q,&a,sizeof(size_t));
		return q;
	}
};

template<> struct hash<string>
{
	size_t operator()(const string &s) const
	{
		char a[MAXBUF];
		static struct hash<const char *> strhash;
		strcpy(a,s.c_str());
		strlower(a);
		return strhash(a);
	}
};
	


struct StrHashComp
{

	bool operator()(const string& s1, const string& s2) const
	{
		char a[MAXBUF],b[MAXBUF];
		strcpy(a,s1.c_str());
		strcpy(b,s2.c_str());
		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 hash_map<string, userrec*, hash<string>, StrHashComp> user_hash;
typedef hash_map<string, chanrec*, hash<string>, StrHashComp> chan_hash;
typedef hash_map<in_addr,string*, hash<in_addr>, InAddr_HashComp> address_cache;
typedef deque<command_t> command_table;
typedef DLLFactory<ModuleFactory> ircd_module;

user_hash clientlist;
chan_hash chanlist;
user_hash whowas;
command_table cmdlist;
file_cache MOTD;
file_cache RULES;
address_cache IP;
vector<Module*> modules(255);
vector<ircd_module*> factory(255);
ClassVector Classes;

struct linger linger = { 0 };
char bannerBuffer[MAXBUF];
int boundPortCount = 0;

/* prototypes */

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


void safedelete(userrec *p)
{
	if (p)
	{
		debug("deleting %s %s %s %s",p->nick,p->ident,p->dhost,p->fullname);
		debug("safedelete(userrec*): pointer is safe to delete");
		delete p;
	}
	else
	{
		debug("safedelete(userrec*): unsafe pointer operation squished");
	}
}

void safedelete(chanrec *p)
{
	if (p)
	{
		delete p;
		debug("safedelete(chanrec*): pointer is safe to delete");
	}
	else
	{
		debug("safedelete(chanrec*): unsafe pointer operation squished");
	}
}


/* chop a string down to 512 characters and preserve linefeed (irc max
 * line length) */

void chop(char* str)
{
	if (strlen(str) > 512)
	{
		str[510] = '\r';
		str[511] = '\n';
		str[512] = '\0';
	}
}


string getservername()
{
	return ServerName;
}

string getnetworkname()
{
	return Network;
}

string getadminname()
{
	return AdminName;
}

string getadminemail()
{
	return AdminEmail;
}

string getadminnick()
{
	return AdminNick;
}

void debug(char *text, ...)
{
  char textbuffer[MAXBUF];
  va_list argsPtr;
  FILE *f;
  time_t rawtime;
  struct tm * timeinfo;

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

  if (debugging)
  {
	  f = fopen("ircd.log","a+");
	  if (f)
	  {
		  char b[MAXBUF];
		  va_start (argsPtr, text);
		  vsnprintf(textbuffer, MAXBUF, text, argsPtr);
		  va_end(argsPtr);
		  strcpy(b,asctime(timeinfo));
		  b[strlen(b)-1] = ':';
		  fprintf(f,"%s %s\n",b,textbuffer);
		  fclose(f);
	  }
	  else
	  {
		  printf("Can't write log file, bailing!!!");
		  Exit(ERROR);
	  }
  }
}

void readfile(file_cache &F, const char* fname)
{
  FILE* file;
  char linebuf[MAXBUF];

  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
  {
	  debug("readfile: failed to load file: %s",fname);
  }
  debug("readfile: loaded %s, %d lines",fname,F.size());
}

void ReadConfig(void)
{
  char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF];
  ConnectClass c;

  ConfValue("server","name",0,ServerName);
  ConfValue("server","description",0,ServerDesc);
  ConfValue("server","network",0,Network);
  ConfValue("admin","name",0,AdminName);
  ConfValue("admin","email",0,AdminEmail);
  ConfValue("admin","nick",0,AdminNick);
  ConfValue("files","motd",0,motd);
  ConfValue("files","rules",0,rules);
  ConfValue("power","diepass",0,diepass);
  ConfValue("power","pause",0,pauseval);
  ConfValue("power","restartpass",0,restartpass);
  ConfValue("options","prefixquit",0,PrefixQuit);
  ConfValue("die","value",0,DieValue);
  ConfValue("options","debug",0,dbg);
  debugging = 0;
  if (!strcmp(dbg,"on"))
  {
	  debugging = 1;
  }
  DieDelay = atoi(pauseval);
  readfile(MOTD,motd);
  readfile(RULES,rules);
  debug("Reading connect classes");
  Classes.clear();
  for (int i = 0; i < ConfValueEnum("connect"); i++)
  {
	strcpy(Value,"");
	ConfValue("connect","allow",i,Value);
	if (strcmp(Value,""))
	{
		strcpy(c.host,Value);
		c.type = CC_ALLOW;
		strcpy(Value,"");
		ConfValue("connect","password",i,Value);
		strcpy(c.pass,Value);
		Classes.push_back(c);
		debug("Read connect class type ALLOW, host=%s password=%s",c.host,c.pass);
	}
	else
	{
		ConfValue("connect","deny",i,Value);
                strcpy(c.host,Value);
                c.type = CC_DENY;
		Classes.push_back(c);
		debug("Read connect class type DENY, host=%s",c.host);
	}
	
  }
}

void Blocking(int s)
{
  int flags;
  debug("Blocking: %d",s);
  flags = fcntl(s, F_GETFL, 0);
  fcntl(s, F_SETFL, flags ^ O_NONBLOCK);
}

void NonBlocking(int s)
{
  int flags;
  debug("NonBlocking: %d",s);
  flags = fcntl(s, F_GETFL, 0);
  fcntl(s, F_SETFL, flags | O_NONBLOCK);
}


int CleanAndResolve (char *resolvedHost, const char *unresolvedHost)
{
  struct hostent *hostPtr = NULL;
  struct in_addr addr;

  memset (resolvedHost, '\0',MAXBUF);
  if(unresolvedHost == NULL)
	return(ERROR);
  if ((inet_aton(unresolvedHost,&addr)) == 0)
	return(ERROR);
  hostPtr = gethostbyaddr ((char *)&addr.s_addr,sizeof(addr.s_addr),AF_INET);
  if (hostPtr != NULL)
  	snprintf(resolvedHost,MAXBUF,"%s",hostPtr->h_name);
  else
  	snprintf(resolvedHost,MAXBUF,"%s",unresolvedHost);
  return (TRUE);
}

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

void Write(int sock,char *text, ...)
{
  char textbuffer[MAXBUF];
  va_list argsPtr;
  char tb[MAXBUF];

  va_start (argsPtr, text);
  vsnprintf(textbuffer, MAXBUF, text, argsPtr);
  va_end(argsPtr);
  sprintf(tb,"%s\r\n",textbuffer);
  chop(tb);
  write(sock,tb,strlen(tb));
  update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
}

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

void WriteServ(int sock, char* text, ...)
{
  char textbuffer[MAXBUF],tb[MAXBUF];
  va_list argsPtr;
  va_start (argsPtr, text);

  vsnprintf(textbuffer, MAXBUF, text, argsPtr);
  va_end(argsPtr);
  sprintf(tb,":%s %s\r\n",ServerName,textbuffer);
  chop(tb);
  write(sock,tb,strlen(tb));
  update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
}

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

void WriteFrom(int sock, userrec *user,char* text, ...)
{
  char textbuffer[MAXBUF],tb[MAXBUF];
  va_list argsPtr;
  va_start (argsPtr, text);

  vsnprintf(textbuffer, MAXBUF, text, argsPtr);
  va_end(argsPtr);
  sprintf(tb,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
  chop(tb);
  write(sock,tb,strlen(tb));
  update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
}

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

void WriteTo(userrec *source, userrec *dest,char *data, ...)
{
	char textbuffer[MAXBUF],tb[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, data);
	if ((!dest) || (!source))
	{
		return;
	}
	vsnprintf(textbuffer, MAXBUF, data, argsPtr);
	va_end(argsPtr);
	chop(tb);
	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, ...)
{
	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))
		{
			WriteTo(user,i->second,"%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, ...)
{
	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) && (user != i->second))
		{
			WriteTo(user,i->second,"%s",textbuffer);
		}
	}
}

int c_count(userrec* u)
{
	int z = 0;
	for (int i =0; i != MAXCHANS; i++)
		if (u->chans[i].channel)
			z++;
	return z;

}

/* return 0 or 1 depending if users u and u2 share one or more common channels
 * (used by QUIT, NICK etc which arent channel specific notices) */

int common_channels(userrec *u, userrec *u2)
{
	int i = 0;
	int z = 0;

	if ((!u) || (!u2))
	{
		return 0;
	}
	for (i = 0; i != MAXCHANS; i++)
	{
		for (z = 0; z != MAXCHANS; z++)
		{
			if ((u->chans[i].channel == u2->chans[z].channel) && (u->chans[i].channel) && (u2->chans[z].channel) && (u->registered == 7) && (u2->registered == 7))
			{
				if ((c_count(u)) && (c_count(u2)))
				{
					return 1;
				}
			}
		}
	}
	return 0;
}

/* 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, ...)
{
	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 (common_channels(u,i->second) && (i->second != u))
		{
			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, ...)
{
	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 ((common_channels(u,i->second)) && (u != i->second))
		{
			WriteFrom(i->second->fd,u,"%s",textbuffer);
		}
	}
}

void WriteOpers(char* text, ...)
{
	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 (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);
			}
		}
	}
}

void WriteWallOps(userrec *source, char* text, ...)  
{  
        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 (strchr(i->second->modes,'w'))
                {  
			WriteTo(source,i->second,"WALLOPS %s",textbuffer);
                }
	}
}  

/* 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] = '|';
	}
}

/* verify that a user's nickname is valid */

int isnick(const char* n)
{
	int i = 0;
	char v[MAXBUF];
	if (!n)
	{
		return 0;
	}
	if (!strcmp(n,""))
	{
		return 0;
	}
	if (strlen(n) > NICKMAX-1)
	{
		return 0;
	}
	for (i = 0; i != strlen(n); i++)
	{
		if ((n[i] < 33) || (n[i] > 125))
		{
			return 0;
		}
		/* can't occur ANYWHERE in a nickname! */
		if (strchr("<>,./?:;@'~#=+()*&%$<24> \"!",n[i]))
		{
			return 0;
		}
		/* can't occur as the first char of a nickname... */
		if ((strchr("0123456789",n[i])) && (!i))
		{
			return 0;
		}
	}
	return 1;
}

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

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

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

	return iter->second;
}

void update_stats_l(int fd,int data_out) /* add one line-out to stats L for this fd */
{
	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second->fd == fd)
		{
			i->second->bytes_out+=data_out;
			i->second->cmds_out++;
		}
	}
}


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

chanrec* FindChan(const char* chan)
{
	chan_hash::iterator iter = chanlist.find(chan);

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

	return iter->second;
}


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())
					{
						debug("del_channel: destroyed: %s",i->second->name);
						delete i->second;
						chanlist.erase(i);
						go_again = 1;
						purge++;
						break;
					}
				}
			}
		}
	}
	debug("completed channel purge, killed %d",purge);
}

/* returns the status character for a given user on a channel, e.g. @ for op,
 * % for halfop etc. If the user has several modes set, the highest mode
 * the user has must be returned. */

char* cmode(userrec *user, chanrec *chan)
{
	int i;
	for (i = 0; i != MAXCHANS; i++)
	{
		if ((user->chans[i].channel == chan) && (chan != NULL))
		{
			if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
			{
				return "@";
			}
			if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
			{
				return "%";
			}
			if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
			{
				return "+";
			}
			return "";
		}
	}
}

char scratch[MAXMODES];

char* chanmodes(chanrec *chan)
{
	strcpy(scratch,"");
	if (chan->noexternal)
	{
		strcat(scratch,"n");
	}
	if (chan->topiclock)
	{
		strcat(scratch,"t");
	}
	if (strcmp(chan->key,""))
	{
		strcat(scratch,"k");
	}
	if (chan->limit)
	{
		strcat(scratch,"l");
	}
	if (chan->inviteonly)
	{
		strcat(scratch,"i");
	}
	if (chan->moderated)
	{
		strcat(scratch,"m");
	}
	if (chan->secret)
	{
		strcat(scratch,"s");
	}
	if (chan->c_private)
	{
		strcat(scratch,"p");
	}
	if (strcmp(chan->key,""))
	{
		strcat(scratch," ");
		strcat(scratch,chan->key);
	}
	if (chan->limit)
	{
		char foo[24];
		sprintf(foo," %d",chan->limit);
		strcat(scratch,foo);
	}
	debug("chanmodes: %s %s",chan->name,scratch);
	return scratch;
}

/* returns the status value for a given user on a channel, e.g. STATUS_OP for
 * op, STATUS_VOICE for voice etc. If the user has several modes set, the
 * highest mode the user has must be returned. */

int cstatus(userrec *user, chanrec *chan)
{
	int i;
	for (i = 0; i != MAXCHANS; i++)
	{
		if ((user->chans[i].channel == chan) && (chan != NULL))
		{
			if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
			{
				return STATUS_OP;
			}
			if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
			{
				return STATUS_HOP;
			}
			if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
			{
				return STATUS_VOICE;
			}
			return STATUS_NORMAL;
		}
	}
}


/* 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)
{
	sprintf(list,"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;
				}
				strcat(list,cmode(i->second,c));
				strcat(list,i->second->nick);
				strcat(list," ");
				if (strlen(list)>(480-NICKMAX))
				{
					/* list overflowed into
					 * multiple numerics */
					WriteServ(user->fd,list);
					sprintf(list,"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,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;

	strcpy(list,"");
  	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;
				}
				count++;
			}
		}
	}
	debug("usercount_i: %s %d",c->name,count);
	return count;
}


int usercount(chanrec *c)
{
	int i = 0;
	int count = 0;

	strcpy(list,"");
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (has_channel(i->second,c))
		{
			if (isnick(i->second->nick))
			{
				count++;
			}
		}
	}
	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, char* cname, char* key)
{
	int i = 0;
	chanrec* Ptr;
	int created = 0;

	if ((!cname) || (!user))
	{
		return NULL;
	}
	if (strlen(cname) > CHANMAX-1)
	{
		cname[CHANMAX-1] = '\0';
	}

	debug("add_channel: %s %s",user->nick,cname);
	
	if ((has_channel(user,FindChan(cname))) && (FindChan(cname)))
	{
		return NULL; // already on the channel!
	}
	
	if (!FindChan(cname))
	{
		/* create a new one */
		debug("add_channel: creating: %s",cname);
		{
			chanlist[cname] = new chanrec();

			strcpy(chanlist[cname]->name, cname);
			chanlist[cname]->topiclock = 1;
			chanlist[cname]->noexternal = 1;
			chanlist[cname]->created = time(NULL);
			strcpy(chanlist[cname]->topic, "");
			strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
			chanlist[cname]->topicset = 0;
			Ptr = chanlist[cname];
			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)
		{
			debug("add_channel: joining to: %s",Ptr->name);
			if (strcmp(Ptr->key,""))
			{
				debug("add_channel: %s has key %s",Ptr->name,Ptr->key);
				if (!key)
				{
					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
				{
					debug("key at %p is %s",key,key);
					if (strcasecmp(key,Ptr->key))
					{
						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;
					}
				}
			}

			if (Ptr->inviteonly)
			{
				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;
				}
			}

			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;
				}
			}
			
			/* check user against the channel banlist */
			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;
				}
			}

			user->RemoveInvite(Ptr->name);
			
		}
		created = 1;
	}

	
	for (i =0; i != MAXCHANS; i++)
	{
		if (user->chans[i].channel == NULL)
		{
			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 (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;
		}
	}
	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, char* cname, char* reason)
{
	int i = 0;
	chanrec* Ptr;
	int created = 0;

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

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

	FOREACH_MOD OnUserPart(user,Ptr);
	debug("del_channel: removing: %s %s",user->nick,Ptr->name);
	
	for (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);
			}
			else
			{
				WriteChannel(Ptr,user,"PART :%s",Ptr->name);
			}
			user->chans[i].uc_modes = 0;
			user->chans[i].channel = NULL;
			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);

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

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


void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
{
	int i = 0;
	int created = 0;

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

	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;
	}
	if ((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr)))
	{
		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",src->nick, Ptr->name);
		}
		
		return;
	}
	
	for (i =0; i != MAXCHANS; i++)
	{
		/* zap it from the channel list of the user */
		if (user->chans[i].channel == Ptr)
		{
			WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
			user->chans[i].uc_modes = 0;
			user->chans[i].channel = NULL;
			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);

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

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


/* returns 1 if user u has channel c in their record, 0 if not */

int has_channel(userrec *u, chanrec *c)
{
	int i = 0;

	if (!u)
	{
		return 0;
	}
	for (i =0; i != MAXCHANS; i++)
	{
		if (u->chans[i].channel == c)
		{
			return 1;
		}
	}
	return 0;
}

int give_ops(userrec *user,char *dest,chanrec *chan,int status)
{
	userrec *d;
	int i;
	
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}
	if (status != STATUS_OP)
	{
		WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
		return 0;
	}
	else
	{
		if (!isnick(dest))
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		d = Find(dest);
		if (!d)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		else
		{
			for (i = 0; i != MAXCHANS; i++)
			{
				if ((d->chans[i].channel == chan) && (chan != NULL))
				{
					if (d->chans[i].uc_modes & UCMODE_OP)
					{
						/* mode already set on user, dont allow multiple */
						return 0;
					}
					d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_OP;
					debug("gave ops: %s %s",d->chans[i].channel->name,d->nick);
				}
			}
		}
	}
	return 1;
}

int give_hops(userrec *user,char *dest,chanrec *chan,int status)
{
	userrec *d;
	int i;
	
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}
	if (status != STATUS_OP)
	{
		WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
		return 0;
	}
	else
	{
		d = Find(dest);
		if (!isnick(dest))
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		if (!d)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		else
		{
			for (i = 0; i != MAXCHANS; i++)
			{
				if ((d->chans[i].channel == chan) && (chan != NULL))
				{
					if (d->chans[i].uc_modes & UCMODE_HOP)
					{
						/* mode already set on user, dont allow multiple */
						return 0;
					}
					d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_HOP;
					debug("gave h-ops: %s %s",d->chans[i].channel->name,d->nick);
				}
			}
		}
	}
	return 1;
}

int give_voice(userrec *user,char *dest,chanrec *chan,int status)
{
	userrec *d;
	int i;
	
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}
	if (status < STATUS_HOP)
	{
		WriteServ(user->fd,"482 %s %s :You must be at least a half-operator",user->nick, chan->name);
		return 0;
	}
	else
	{
		d = Find(dest);
		if (!isnick(dest))
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		if (!d)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		else
		{
			for (i = 0; i != MAXCHANS; i++)
			{
				if ((d->chans[i].channel == chan) && (chan != NULL))
				{
					if (d->chans[i].uc_modes & UCMODE_VOICE)
					{
						/* mode already set on user, dont allow multiple */
						return 0;
					}
					d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_VOICE;
					debug("gave voice: %s %s",d->chans[i].channel->name,d->nick);
				}
			}
		}
	}
	return 1;
}

int take_ops(userrec *user,char *dest,chanrec *chan,int status)
{
	userrec *d;
	int i;
	
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}
	if (status != STATUS_OP)
	{
		WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
		return 0;
	}
	else
	{
		d = Find(dest);
		if (!isnick(dest))
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		if (!d)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		else
		{
			for (i = 0; i != MAXCHANS; i++)
			{
				if ((d->chans[i].channel == chan) && (chan != NULL))
				{
					if ((d->chans[i].uc_modes & UCMODE_OP) == 0)
					{
						/* mode already set on user, dont allow multiple */
						return 0;
					}
					d->chans[i].uc_modes ^= UCMODE_OP;
					debug("took ops: %s %s",d->chans[i].channel->name,d->nick);
				}
			}
		}
	}
	return 1;
}

int take_hops(userrec *user,char *dest,chanrec *chan,int status)
{
	userrec *d;
	int i;
	
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}
	if (status != STATUS_OP)
	{
		WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
		return 0;
	}
	else
	{
		d = Find(dest);
		if (!isnick(dest))
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		if (!d)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		else
		{
			for (i = 0; i != MAXCHANS; i++)
			{
				if ((d->chans[i].channel == chan) && (chan != NULL))
				{
					if ((d->chans[i].uc_modes & UCMODE_HOP) == 0)
					{
						/* mode already set on user, dont allow multiple */
						return 0;
					}
					d->chans[i].uc_modes ^= UCMODE_HOP;
					debug("took h-ops: %s %s",d->chans[i].channel->name,d->nick);
				}
			}
		}
	}
	return 1;
}

int take_voice(userrec *user,char *dest,chanrec *chan,int status)
{
	userrec *d;
	int i;
	
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}
	if (status < STATUS_HOP)
	{
		WriteServ(user->fd,"482 %s %s :You must be at least a half-operator",user->nick, chan->name);
		return 0;
	}
	else
	{
		d = Find(dest);
		if (!isnick(dest))
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		if (!d)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
			return 0;
		}
		else
		{
			for (i = 0; i != MAXCHANS; i++)
			{
				if ((d->chans[i].channel == chan) && (chan != NULL))
				{
					if ((d->chans[i].uc_modes & UCMODE_VOICE) == 0)
					{
						/* mode already set on user, dont allow multiple */
						return 0;
					}
					d->chans[i].uc_modes ^= UCMODE_VOICE;
					debug("took voice: %s %s",d->chans[i].channel->name,d->nick);
				}
			}
		}
	}
	return 1;
}

void TidyBan(char *ban)
{
	char temp[MAXBUF],NICK[MAXBUF],IDENT[MAXBUF],HOST[MAXBUF];

	strcpy(temp,ban);

	char* pos_of_pling = strchr(temp,'!');
	char* pos_of_at = strchr(temp,'@');

	pos_of_pling[0] = '\0';
	pos_of_at[0] = '\0';
	pos_of_pling++;
	pos_of_at++;

	strncpy(NICK,temp,NICKMAX);
	strncpy(IDENT,pos_of_pling,IDENTMAX+1);
	strncpy(HOST,pos_of_at,160);

	sprintf(ban,"%s!%s@%s",NICK,IDENT,HOST);
}

int add_ban(userrec *user,char *dest,chanrec *chan,int status)
{
	BanItem b;
	if ((!user) || (!dest) || (!chan))
		return 0;
	if (strchr(dest,'!')==0)
		return 0;
	if (strchr(dest,'@')==0)
		return 0;
	for (int i = 0; i < strlen(dest); i++)
		if (dest[i] < 32)
			return 0;
	for (int i = 0; i < strlen(dest); i++)
		if (dest[i] > 126)
			return 0;
	int c = 0;
	for (int i = 0; i < strlen(dest); i++)
		if (dest[i] == '!')
			c++;
	if (c>1)
		return 0;
	c = 0;
	for (int i = 0; i < strlen(dest); i++)
		if (dest[i] == '@')
			c++;
	if (c>1)
		return 0;
	debug("add_ban: %s %s",chan->name,user->nick);

	TidyBan(dest);
	for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
	{
		if (!strcasecmp(i->data,dest))
		{
			// dont allow a user to set the same ban twice
			return 0;
		}
	}

	b.set_time = time(NULL);
	strncpy(b.data,dest,MAXBUF);
	strncpy(b.set_by,user->nick,NICKMAX);
	chan->bans.push_back(b);
	return 1;
}

int take_ban(userrec *user,char *dest,chanrec *chan,int status)
{
	if ((!user) || (!dest) || (!chan))
	{
		return 0;
	}

	debug("del_ban: %s %s",chan->name,user->nick);
	for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
	{
		if (!strcasecmp(i->data,dest))
		{
			chan->bans.erase(i);
			return 1;
		}
	}
	return 0;
}

void process_modes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt)
{
	char modelist[MAXBUF];
	char outlist[MAXBUF];
	char outstr[MAXBUF];
	char outpars[32][MAXBUF];
	int param = 2;
	int pc = 0;
	int ptr = 0;
	int mdir = 1;
	int r = 0;
	bool k_set = false, l_set = false;

	if (pcnt < 2)
	{
		return;
	}

	debug("process_modes: start");

	strcpy(modelist,parameters[1]); /* mode list, e.g. +oo-o */
					/* parameters[2] onwards are parameters for
					 * modes that require them :) */
	strcpy(outlist,"+");
	mdir = 1;

	debug("process_modes: modelist: %s",modelist);

	for (ptr = 0; ptr < strlen(modelist); ptr++)
	{
		r = 0;

		{
			debug("process_modes: modechar: %c",modelist[ptr]);
			switch (modelist[ptr])
			{
				case '-':
					if (mdir != 0)
					{
						if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-'))
						{
							outlist[strlen(outlist)-1] = '-';
						}
						else
						{
							strcat(outlist,"-");
						}
					}
					mdir = 0;
					
				break;			

				case '+':
					if (mdir != 1)
					{
						if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-'))
						{
							outlist[strlen(outlist)-1] = '+';
						}
						else
						{
							strcat(outlist,"+");
						}
					}
					mdir = 1;
				break;

				case 'o':
					if ((param >= pcnt)) break;
					if (mdir == 1)
					{
						r = give_ops(user,parameters[param++],chan,status);
					}
					else
					{
						r = take_ops(user,parameters[param++],chan,status);
					}
					if (r)
					{
						strcat(outlist,"o");
						strcpy(outpars[pc++],parameters[param-1]);
					}
				break;
			
				case 'h':
					if ((param >= pcnt)) break;
					if (mdir == 1)
					{
						r = give_hops(user,parameters[param++],chan,status);
					}
					else
					{
						r = take_hops(user,parameters[param++],chan,status);
					}
					if (r)
					{
						strcat(outlist,"h");
						strcpy(outpars[pc++],parameters[param-1]);
					}
				break;
			
				
				case 'v':
					if ((param >= pcnt)) break;
					if (mdir == 1)
					{
						r = give_voice(user,parameters[param++],chan,status);
					}
					else
					{
						r = take_voice(user,parameters[param++],chan,status);
					}
					if (r)
					{
						strcat(outlist,"v");
						strcpy(outpars[pc++],parameters[param-1]);
					}
				break;
				
				case 'b':
					if ((param >= pcnt)) break;
					if (mdir == 1)
					{
						r = add_ban(user,parameters[param++],chan,status);
					}
					else
					{
						r = take_ban(user,parameters[param++],chan,status);
					}
					if (r)
					{
						strcat(outlist,"b");
						strcpy(outpars[pc++],parameters[param-1]);
					}
				break;

				case 'k':
					if ((param >= pcnt))
						break;

					if (mdir == 1)
					{
						if (k_set)
							break;
						
						if (!strcmp(chan->key,""))
						{
							strcat(outlist,"k");
							strcpy(outpars[pc++],parameters[param++]);
							strcpy(chan->key,parameters[param-1]);
							k_set = true;
						}
					}
					else
					{
						/* only allow -k if correct key given */
						if (strcmp(chan->key,""))
						{
							strcat(outlist,"k");
							strcpy(chan->key,"");
						}
					}
				break;
				
				case 'l':
					if (mdir == 0)
					{
						if (chan->limit)
						{
							strcat(outlist,"l");
							chan->limit = 0;
						}
					}
					
					if ((param >= pcnt)) break;
					if (mdir == 1)
					{
						if (l_set)
							break;
						
						bool invalid = false;
						for (int i = 0; i < strlen(parameters[param]); i++)
						{
							if ((parameters[param][i] < '0') || (parameters[param][i] > '9'))
							{
								invalid = true;
							}
						}
						if (atoi(parameters[param]) < 1)
						{
							invalid = true;
						}

						if (invalid)
							break;
						
						chan->limit = atoi(parameters[param]);
						if (chan->limit)
						{
							strcat(outlist,"l");
							strcpy(outpars[pc++],parameters[param++]);
							l_set = true;
						}
					}
				break;
				
				case 'i':
					if (chan->inviteonly != mdir)
					{
						strcat(outlist,"i");
					}
					chan->inviteonly = mdir;
				break;
				
				case 't':
					if (chan->topiclock != mdir)
					{
						strcat(outlist,"t");
					}
					chan->topiclock = mdir;
				break;
				
				case 'n':
					if (chan->noexternal != mdir)
					{
						strcat(outlist,"n");
					}
					chan->noexternal = mdir;
				break;
				
				case 'm':
					if (chan->moderated != mdir)
					{
						strcat(outlist,"m");
					}
					chan->moderated = mdir;
				break;
				
				case 's':
					if (chan->secret != mdir)
					{
						strcat(outlist,"s");
						if (chan->c_private)
						{
							chan->c_private = 0;
							if (mdir)
							{
								strcat(outlist,"-p+");
							}
							else
							{
								strcat(outlist,"+p-");
							}
						}
					}
					chan->secret = mdir;
				break;
				
				case 'p':
					if (chan->c_private != mdir)
					{
						strcat(outlist,"p");
						if (chan->secret)
						{
							chan->secret = 0;
							if (mdir)
							{
								strcat(outlist,"-s+");
							}
							else
							{
								strcat(outlist,"+s-");
							}
						}
					}
					chan->c_private = mdir;
				break;
				
			}
		}
	}

	/* this ensures only the *valid* modes are sent out onto the network */
	while ((outlist[strlen(outlist)-1] == '-') || (outlist[strlen(outlist)-1] == '+'))
	{
		outlist[strlen(outlist)-1] = '\0';
	}
	if (strcmp(outlist,""))
	{
		strcpy(outstr,outlist);
		for (ptr = 0; ptr < pc; ptr++)
		{
			strcat(outstr," ");
			strcat(outstr,outpars[ptr]);
		}
		WriteChannel(chan,user,"MODE %s %s",chan->name,outstr);
	}
}

void handle_mode(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr;
	userrec* dest;
	int can_change,i;
	int direction = 1;
	char outpars[MAXBUF];

	dest = Find(parameters[0]);

	if ((dest) && (pcnt == 1))
	{
		WriteServ(user->fd,"221 %s :+%s",user->nick,user->modes);
		return;
	}
	if ((dest) && (pcnt > 1))
	{
		can_change = 0;
		if (user != dest)
		{
			if (strchr(user->modes,'o'))
			{
				can_change = 1;
			}
		}
		else
		{
			can_change = 1;
		}
		if (!can_change)
		{
			WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
			return;
		}
		
		strcpy(outpars,"+");
		direction = 1;

		if ((parameters[1][0] != '+') && (parameters[1][0] != '-'))
			return;

		for (i = 0; i < strlen(parameters[1]); i++)
		{
			if (parameters[1][i] == '+')
			{
				if (direction != 1)
				{
					if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
					{
						outpars[strlen(outpars)-1] = '+';
					}
					else
					{
						strcat(outpars,"+");
					}
				}
				direction = 1;
			}
			else
			if (parameters[1][i] == '-')
			{
				if (direction != 0)
				{
					if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
					{
						outpars[strlen(outpars)-1] = '-';
					}
					else
					{
						strcat(outpars,"-");
					}
				}
				direction = 0;
			}
			else
			{
				can_change = 0;
				if (strchr(user->modes,'o'))
				{
					can_change = 1;
				}
				else
				{
					if ((parameters[1][i] == 'i') || (parameters[1][i] == 'w') || (parameters[1][i] == 's'))
					{
						can_change = 1;
					}
				}
				if (can_change)
				{
					if (direction == 1)
					{
						if (!strchr(dest->modes,parameters[1][i]))
						{
							dest->modes[strlen(dest->modes)+1]='\0';
							dest->modes[strlen(dest->modes)] = parameters[1][i];
							outpars[strlen(outpars)+1]='\0';
							outpars[strlen(outpars)] = parameters[1][i];
						}
					}
					else
					{
						int q = 0;
						char temp[MAXBUF];
						char moo[MAXBUF];

						outpars[strlen(outpars)+1]='\0';
						outpars[strlen(outpars)] = parameters[1][i];
						
						strcpy(temp,"");
						for (q = 0; q < strlen(user->modes); q++)
						{
							if (user->modes[q] != parameters[1][i])
							{
								moo[0] = user->modes[q];
								moo[1] = '\0';
								strcat(temp,moo);
							}
						}
						strcpy(user->modes,temp);
					}
				}
			}
		}
		if (strlen(outpars))
		{
			char b[MAXBUF];
			strcpy(b,"");
			int z = 0;
			int i = 0;
			while (i < strlen (outpars))
			{
				b[z++] = outpars[i++];
				b[z] = '\0';
				if (i<strlen(outpars)-1)
				{
					if (((outpars[i] == '-') || (outpars[i] == '+')) && ((outpars[i+1] == '-') || (outpars[i+1] == '+')))
					{
						// someones playing silly buggers and trying
						// to put a +- or -+ into the line...
						i++;
					}
				}
				if (i == strlen(outpars)-1)
				{
					if ((outpars[i] == '-') || (outpars[i] == '+'))
					{
						i++;
					}
				}
			}

			z = strlen(b)-1;
			if ((b[z] == '-') || (b[z] == '+'))
				b[z] == '\0';

			if ((!strcmp(b,"+")) || (!strcmp(b,"-")))
				return;

			WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
		}
		return;
	}
	
	Ptr = FindChan(parameters[0]);
	if (Ptr)
	{
		if (pcnt == 1)
		{
			/* just /modes #channel */
			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);
			return;
		}
		else
		if (pcnt == 2)
		{
			if ((!strcmp(parameters[1],"+b")) || (!strcmp(parameters[1],"b")))
			{

				for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
				{
					WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
				}
				WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
			}
		}

		if ((cstatus(user,Ptr) < STATUS_HOP) && (Ptr))
		{
			WriteServ(user->fd,"482 %s %s :You must be at least a half-operator",user->nick, Ptr->name);
			return;
		}

		process_modes(parameters,user,Ptr,cstatus(user,Ptr),pcnt);
	}
	else
	{
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
	}
}

/* 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 (i = 0; i <32; i++)
		strcpy(blog[i],"");

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

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

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

	t = strlen(plist);
	for (i = 0; i < t; i++)
	{
		if (plist[i] == ',')
		{
			plist[i] = '\0';
			strcpy(blog[j++],param);
			param = plist+i+1;
		}
	}
	strcpy(blog[j++],param);
	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 (i = 0; i < t2; i++)
			{
				if (keystr[i] == ',')
				{
					keystr[i] = '\0';
					strcpy(blog2[j++],param);
					param = keystr+i+1;
				}
			}
			strcpy(blog2[j++],param);
			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 handle_join(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr;
	int i = 0;
	
	if (loop_call(handle_join,parameters,pcnt,user,0,0,1))
		return;
	if (parameters[0][0] == '#')
	{
		Ptr = add_channel(user,parameters[0],parameters[1]);
	}
}


void handle_part(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr;

	if (pcnt > 1)
	{
		if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-2,0))
			return;
		del_channel(user,parameters[0],parameters[1]);
	}
	else
	{
		if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-1,0))
			return;
		del_channel(user,parameters[0],NULL);
	}
}

void handle_kick(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr = FindChan(parameters[0]);
	userrec* u   = Find(parameters[1]);

	if ((!u) || (!Ptr))
	{
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
		return;
	}
	
	if (!has_channel(u,Ptr))
	{
		WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, parameters[0]);
		return;
	}
	
	if (pcnt > 2)
	{
		kick_channel(user,u,Ptr,parameters[2]);
	}
	else
	{
		kick_channel(user,u,Ptr,user->nick);
	}
}


void handle_die(char **parameters, int pcnt, userrec *user)
{
        debug("die: %s",user->nick);
	if (!strcmp(parameters[0],diepass))
	{
		WriteOpers("*** DIE command from %s!%s@%s, terminating...",user->nick,user->ident,user->host);
	        sleep(DieDelay);
		Exit(ERROR);
	}
	else
	{
		WriteOpers("*** Failed DIE Command from %s!%s@%s.",user->nick,user->ident,user->host);
	}
}

void handle_restart(char **parameters, int pcnt, userrec *user)
{
        debug("restart: %s",user->nick);
        if (!strcmp(parameters[0],restartpass))
	{
	        WriteOpers("*** RESTART command from %s!%s@%s, Pretending to restart till this is finished :D",user->nick,user->ident,user->host);
	        sleep(DieDelay);
	        Exit(ERROR);
		/* Will finish this later when i can be arsed :) */
        }
        else
	{
        	WriteOpers("*** Failed RESTART Command from %s!%s@%s.",user->nick,user->ident,user->host);
        }
}


void kill_link(userrec *user,char* reason)
{
	user_hash::iterator iter = clientlist.find(user->nick);

	debug("kill_link: %s '%s'",user->nick,reason);
	Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
	fdatasync(user->fd);
	WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
	FOREACH_MOD OnUserQuit(user);
	debug("closing fd %d",user->fd);
	/* bugfix, cant close() a nonblocking socket (sux!) */
	WriteCommonExcept(user,"QUIT :%s",reason);
	Blocking(user->fd);
	close(user->fd);
	NonBlocking(user->fd);
	AddWhoWas(user);

	if (iter != clientlist.end())
	{
		debug("deleting user hash value %p",iter->second);
		delete iter->second;
		clientlist.erase(iter);
	}
	
	purge_empty_chans();
}


void handle_kill(char **parameters, int pcnt, userrec *user)
{
	userrec *u = Find(parameters[0]);
	char killreason[MAXBUF];
	
        debug("kill: %s %s",parameters[0],parameters[1]);
	if (u)
	{
		WriteOpers("*** Local Kill by %s: %s!%s@%s (%s)",user->nick,u->nick,u->ident,u->host,parameters[1]);
		sprintf(killreason,"Killed (%s (%s))",user->nick,parameters[1]);
		kill_link(u,killreason);
	}
	else
	{
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
	}
}

void handle_summon(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"445 %s :SUMMON has been disabled (depreciated command)",user->nick);
}

void handle_users(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"445 %s :USERS has been disabled (depreciated command)",user->nick);
}


// 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;
}


void handle_pass(char **parameters, int pcnt, userrec *user)
{
	if (!strcasecmp(parameters[0],Passwd(user)))
	{
		user->haspassed = true;
	}
}

void handle_invite(char **parameters, int pcnt, userrec *user)
{
	userrec* u = Find(parameters[0]);
	chanrec* c = FindChan(parameters[1]);

	if ((!c) || (!u))
	{
		if (!c)
		{
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[1]);
		}
		else
		{
			if (c->inviteonly)
			{
				WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
			}
		}

		return;
	}

	if (c->inviteonly)
	{
		if (cstatus(user,c) < STATUS_HOP)
		{
			WriteServ(user->fd,"482 %s %s :You must be at least a half-operator",user->nick, c->name);
			return;
		}

		u->InviteTo(c->name);
		WriteFrom(u->fd,user,"INVITE %s :%s",u->nick,c->name);
		WriteServ(user->fd,"341 %s %s %s",user->nick,u->nick,c->name);
	}
}

void handle_topic(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr;

	if (pcnt == 1)
	{
		if (strlen(parameters[0]) <= CHANMAX)
		{
			Ptr = FindChan(parameters[0]);
			if (Ptr)
			{
				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);
				}
				else
				{
					WriteServ(user->fd,"331 %s %s :No topic is set.", user->nick, Ptr->name);
				}
			}
			else
			{
				WriteServ(user->fd,"331 %s %s :No topic is set.", user->nick, Ptr->name);
			}
		}
	}
	else if (pcnt>1)
	{
		if (loop_call(handle_topic,parameters,pcnt,user,0,pcnt-2,0))
			return;
		if (strlen(parameters[0]) <= CHANMAX)
		{
			Ptr = FindChan(parameters[0]);
			if (Ptr)
			{
				if ((Ptr->topiclock) && (cstatus(user,Ptr)<STATUS_HOP))
				{
					WriteServ(user->fd,"482 %s %s :You must be at least a half-operator", user->nick, Ptr->name);
					return;
				}
				strcpy(Ptr->topic,parameters[1]);
				strcpy(Ptr->setby,user->nick);
				Ptr->topicset = time(NULL);
				WriteChannel(Ptr,user,"TOPIC %s :%s",Ptr->name, Ptr->topic);
			}
			else
			{
				WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
			}
		}
	}
}

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

void send_error(char *s)
{
        debug("send_error: %s",s);
  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,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);
  debug("*** 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();
        debug("*** InspIRCd starting up!");
	if (!CheckConfig())
	{
	        debug("main: no config");
		printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
		Exit(ERROR);
	}
	if (InspIRCd() == ERROR)
	{
	        debug("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);

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

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

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

	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();
	strcpy(a->nick,u->nick);
	strcpy(a->ident,u->ident);
	strcpy(a->dhost,u->dhost);
	strcpy(a->host,u->host);
	strcpy(a->fullname,u->fullname);
	strcpy(a->server,u->server);
	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(NULL)-(WHOWAS_STALE*3600)))
				{
					delete i->second;
					i->second = a;
					debug("added WHOWAS entry, purged an old record");
					return;
				}
			}
		}
		else
		{
			debug("added fresh WHOWAS entry");
			whowas[a->nick] = a;
		}
	}
	else
	{
		debug("updated WHOWAS entry");
		delete iter->second;
		iter->second = a;
	}
}


/* add a client connection to the sockets list */
void AddClient(int socket, char* host, int port, bool iscached)
{
        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);
        debug("AddClient: %d %s %d",socket,host,port);


	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);
	clientlist[tempnick]->registered = 0;
	clientlist[tempnick]->signon = time(NULL);
	clientlist[tempnick]->nping = time(NULL)+240;
	clientlist[tempnick]->lastping = 1;
	clientlist[tempnick]->port = port;

	if (iscached)
	{
		WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
	}
	else
	{
		WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
	}

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

void handle_names(char **parameters, int pcnt, userrec *user)
{
	chanrec* c;

	if (loop_call(handle_names,parameters,pcnt,user,0,pcnt-1,0))
		return;
	c = FindChan(parameters[0]);
	if (c)
	{
		/*WriteServ(user->fd,"353 %s = %s :%s", user->nick, c->name,*/
		userlist(user,c);
		WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, c->name);
	}
	else
	{
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
	}
}


void handle_privmsg(char **parameters, int pcnt, userrec *user)
{
	userrec *dest;
	chanrec *chan;
	
	if (loop_call(handle_privmsg,parameters,pcnt,user,0,pcnt-2,0))
		return;
	if (parameters[0][0] == '#')
	{
		chan = FindChan(parameters[0]);
		if (chan)
		{
			if ((chan->noexternal) && (!has_channel(user,chan)))
			{
				WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
				return;
			}
			if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
			{
				WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
				return;
			}
			ChanExceptSender(chan, user, "PRIVMSG %s :%s", chan->name, parameters[1]);
		}
		else
		{
			/* no such nick/channel */
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
		}
		return;
	}
	
	dest = Find(parameters[0]);
	if (dest)
	{
		if (strcmp(dest->awaymsg,""))
		{
			/* auto respond with aweh msg */
			WriteServ(user->fd,"301 %s %s :%s",user->nick,dest->nick,dest->awaymsg);
		}
		WriteTo(user, dest, "PRIVMSG %s :%s", dest->nick, parameters[1]);
	}
	else
	{
		/* no such nick/channel */
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
	}
}

void handle_notice(char **parameters, int pcnt, userrec *user)
{
	userrec *dest;
	chanrec *chan;

	if (loop_call(handle_notice,parameters,pcnt,user,0,pcnt-2,0))
		return;
	if (parameters[0][0] == '#')
	{
		chan = FindChan(parameters[0]);
		if (chan)
		{
			if ((chan->noexternal) && (!has_channel(user,chan)))
			{
				WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
				return;
			}
			if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
			{
				WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
				return;
			}
			WriteChannel(chan, user, "NOTICE %s :%s", chan->name, parameters[1]);
		}
		else
		{
			/* no such nick/channel */
			WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
		}
		return;
	}
	
	dest = Find(parameters[0]);
	if (dest)
	{
		WriteTo(user, dest, "NOTICE %s :%s", dest->nick, parameters[1]);
	}
	else
	{
		/* no such nick/channel */
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
	}
}

char lst[MAXBUF];

char* chlist(userrec *user)
{
	int i = 0;
	char cmp[MAXBUF];

        debug("chlist: %s",user->nick);
	strcpy(lst,"");
	if (!user)
	{
		return lst;
	}
	for (i = 0; i != MAXCHANS; i++)
	{
		if (user->chans[i].channel != NULL)
		{
			if (user->chans[i].channel->name)
			{
				strcpy(cmp,user->chans[i].channel->name);
				strcat(cmp," ");
				if (!strstr(lst,cmp))
				{
					if ((!user->chans[i].channel->c_private) && (!user->chans[i].channel->secret))
					{
						strcat(lst,cmode(user,user->chans[i].channel));
						strcat(lst,user->chans[i].channel->name);
						strcat(lst," ");
					}
				}
			}
		}
	}
	return lst;
}

void handle_info(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"371 %s :The Inspire IRCd Project Has been brought to you by the following people..",user->nick);
	WriteServ(user->fd,"371 %s :Craig Edwards, Craig McLure, and Others..",user->nick);
	WriteServ(user->fd,"371 %s :Will finish this later when i can be arsed :p",user->nick);
	WriteServ(user->fd,"374 %s :End of /INFO list",user->nick);
}

void handle_time(char **parameters, int pcnt, userrec *user)
{
	time_t rawtime;
	struct tm * timeinfo;

	time ( &rawtime );
	timeinfo = localtime ( &rawtime );
	WriteServ(user->fd,"391 %s %s :%s",user->nick,ServerName, asctime (timeinfo) );
  
}

void handle_whois(char **parameters, int pcnt, userrec *user)
{
	userrec *dest;
	char *t;

	if (loop_call(handle_whois,parameters,pcnt,user,0,pcnt-1,0))
		return;
	dest = Find(parameters[0]);
	if (dest)
	{
		WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
		if ((user == dest) || (strchr(user->modes,'o')))
		{
			WriteServ(user->fd,"378 %s %s :is connecting from *@%s",user->nick, dest->nick, dest->host);
		}
		if (strcmp(chlist(dest),""))
		{
			WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, chlist(dest));
		}
		WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, ServerDesc);
		if (strcmp(dest->awaymsg,""))
		{
			WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
		}
		if (strchr(dest->modes,'o'))
		{
			WriteServ(user->fd,"313 %s %s :is an IRC operator",user->nick, dest->nick);
		}
		//WriteServ(user->fd,"310 %s %s :is available for help.",user->nick, dest->nick);
		WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-time(NULL)), dest->signon);
		
		WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
	}
	else
	{
		/* no such nick/channel */
		WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
	}
}

void handle_quit(char **parameters, int pcnt, userrec *user)
{
	user_hash::iterator iter = clientlist.find(user->nick);

	/* theres more to do here, but for now just close the socket */
	if (pcnt == 1)
	{
		if (parameters[0][0] == ':')
		{
			*parameters[0]++;
		}
		Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,parameters[0]);
		WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,parameters[0]);
		WriteCommonExcept(user,"QUIT :%s%s",PrefixQuit,parameters[0]);
	}
	else
	{
		Write(user->fd,"ERROR :Closing link (%s@%s) [QUIT]",user->ident,user->host);
		WriteOpers("*** Client exiting: %s!%s@%s [Client exited]",user->nick,user->ident,user->host);
		WriteCommonExcept(user,"QUIT :Client exited");
	}

	FOREACH_MOD OnUserQuit(user);

	/* confucious say, he who close nonblocking socket, get nothing! */
	Blocking(user->fd);
	close(user->fd);
	NonBlocking(user->fd);
	AddWhoWas(user);

	if (iter != clientlist.end())
	{
		debug("deleting user hash value");
		delete iter->second;
		clientlist.erase(iter);
	}
	
	purge_empty_chans();
}

void handle_who(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr;
	
	/* theres more to do here, but for now just close the socket */
	if (pcnt == 1)
	{
		if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")))
		{
			Ptr = user->chans[0].channel;
			printf(user->chans[0].channel->name);
		  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
			{
				if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
				{
					WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, ServerName, i->second->nick, i->second->fullname);
				}
			}
			WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
			return;
		}
		if (parameters[0][0] = '#')
		{
			Ptr = FindChan(parameters[0]);
			if (Ptr)
			{
			  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
				{
					if ((has_channel(i->second,Ptr)) && (isnick(i->second->nick)))
					{
						WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, ServerName, i->second->nick, i->second->fullname);
					}
				}
				WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
			}
			else
			{
				WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
			}
		}
	}
	if (pcnt == 2)
	{
                if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")) && (!strcmp(parameters[1],"o")))
                {
                        Ptr = user->chans[0].channel;
                        printf(user->chans[0].channel->name);
		  	for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
                        {
                                if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
                                {
                                        if (strchr(i->second->modes,'o'))
                                        {
                                                WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, ServerName, i->second->nick, i->second->fullname);
                                        }
                                }
                        }
                        WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
                        return;
                }
	}
}

void handle_wallops(char **parameters, int pcnt, userrec *user)
{
	WriteWallOps(user,"%s",parameters[0]);
}

void handle_list(char **parameters, int pcnt, userrec *user)
{
	chanrec* Ptr;
	
	WriteServ(user->fd,"321 %s Channel :Users Name",user->nick);
	for (chan_hash::const_iterator i = chanlist.begin(); i != chanlist.end(); i++)
	{
		if ((!i->second->c_private) && (!i->second->secret))
		{
			WriteServ(user->fd,"322 %s %s %d :[+%s] %s",user->nick,i->second->name,usercount_i(i->second),chanmodes(i->second),i->second->topic);
		}
	}
	WriteServ(user->fd,"323 %s :End of channel list.",user->nick);
}


void handle_rehash(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"382 %s %s :Rehashing",user->nick,CONFIG_FILE);
	ReadConfig();
	WriteOpers("%s is rehashing config file %s",user->nick,CONFIG_FILE);
}


int usercnt(void)
{
	return clientlist.size();
}

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;
}

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

int servercount(void)
{
	return 1;
}

void handle_lusers(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),servercount());
	WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
	WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
	WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
	WriteServ(user->fd,"254 %s :I have %d clients and 0 servers",user->nick,usercnt());
}

void handle_admin(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"256 %s :Administrative info for %s",user->nick,ServerName);
	WriteServ(user->fd,"257 %s :Name     - %s",user->nick,AdminName);
	WriteServ(user->fd,"258 %s :Nickname - %s",user->nick,AdminNick);
	WriteServ(user->fd,"258 %s :E-Mail   - %s",user->nick,AdminEmail);
}

void ShowMOTD(userrec *user)
{
	if (!MOTD.size())
	{
		WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
		return;
	}
  	WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
	for (int i = 0; i != MOTD.size(); i++)
	{
				WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
	}
	WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
}

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 ConnectUser(userrec *user)
{
	user->registered = 7;
	user->idle_lastmsg = time(NULL);
        debug("ConnectUser: %s",user->nick);

	if (strcmp(Passwd(user),"") && (!user->haspassed))
	{
		Write(user->fd,"ERROR :Closing link: Invalid password");
		fdatasync(user->fd);
		kill_link(user,"Invalid password");
		return;
	}
	if (IsDenied(user))
	{
		Write(user->fd,"ERROR :Closing link: Unauthorized connection");
		fdatasync(user->fd);
		kill_link(user,"Unauthorised connection");
	}

	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);
	WriteServ(user->fd,"005 %s :MAP KNOCK SAFELIST HCN MAXCHANNELS=20 MAXBANS=60 NICKLEN=30 TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 :are supported by this server",user->nick);
	WriteServ(user->fd,"005 %s :WALLCHOPS WATCH=128 SILENCE=5 MODES=13 CHANTYPES=# PREFIX=(ohv)@%c+ CHANMODES=ohvbeqa,kfL,l,psmntirRcOAQKVHGCuzN NETWORK=%s :are supported by this server",user->nick,'%',Network);
	ShowMOTD(user);
	FOREACH_MOD OnUserConnect(user);
	WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host);
}

void handle_version(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"351 %s :%s %s :%s",user->nick,VERSION,ServerName,SYSTEM);
}

void handle_ping(char **parameters, int pcnt, userrec *user)
{
	WriteServ(user->fd,"PONG %s :%s",ServerName,parameters[0]);
}

void handle_pong(char **parameters, int pcnt, userrec *user)
{
	// set the user as alive so they survive to next ping
	user->lastping = 1;
}

void handle_motd(char **parameters, int pcnt, userrec *user)
{
	ShowMOTD(user);
}

void handle_rules(char **parameters, int pcnt, userrec *user)
{
	ShowRULES(user);
}

void handle_user(char **parameters, int pcnt, userrec *user)
{
	if (user->registered < 3)
	{
		WriteServ(user->fd,"NOTICE Auth :No ident response, ident prefixed with ~");
		strcpy(user->ident,"~"); /* we arent checking ident... but these days why bother anyway? */
		strncat(user->ident,parameters[0],IDENTMAX);
		strncpy(user->fullname,parameters[3],128);
		user->registered = (user->registered | 1);
	}
	else
	{
		WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
		return;
	}
	/* parameters 2 and 3 are local and remote hosts, ignored when sent by client connection */
	if (user->registered == 3)
	{
		/* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
		ConnectUser(user);
	}
}

void handle_userhost(char **parameters, int pcnt, userrec *user)
{
	char Return[MAXBUF],junk[MAXBUF];
	sprintf(Return,"302 %s :",user->nick);
	for (int i = 0; i < pcnt; i++)
	{
		userrec *u = Find(parameters[i]);
		if (u)
		{
			if (strchr(u->modes,'o'))
			{
				sprintf(junk,"%s*=+%s@%s ",u->nick,u->ident,u->host);
				strcat(Return,junk);
			}
			else
			{
				sprintf(junk,"%s=+%s@%s ",u->nick,u->ident,u->host);
				strcat(Return,junk);
			}
		}
	}
	WriteServ(user->fd,Return);
}


void handle_ison(char **parameters, int pcnt, userrec *user)
{
	char Return[MAXBUF];
	sprintf(Return,"303 %s :",user->nick);
	for (int i = 0; i < pcnt; i++)
	{
		userrec *u = Find(parameters[i]);
		if (u)
		{
			strcat(Return,u->nick);
			strcat(Return," ");
		}
	}
	WriteServ(user->fd,Return);
}


void handle_away(char **parameters, int pcnt, userrec *user)
{
	if (pcnt)
	{
		strcpy(user->awaymsg,parameters[0]);
		WriteServ(user->fd,"306 %s :You have been marked as being away",user->nick);
	}
	else
	{
		strcpy(user->awaymsg,"");
		WriteServ(user->fd,"305 %s :You are no longer marked as being away",user->nick);
	}
}

void handle_whowas(char **parameters, int pcnt, userrec* user)
{
	user_hash::iterator i = whowas.find(parameters[0]);

	if (i == whowas.end())
	{
		WriteServ(user->fd,"406 %s %s :There was no such nickname",user->nick,parameters[0]);
		WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
	}
	else
	{
		time_t rawtime = i->second->signon;
		tm *timeinfo;
		char b[MAXBUF];
		
		timeinfo = localtime(&rawtime);
		strcpy(b,asctime(timeinfo));
		b[strlen(b)-1] = '\0';
		
		WriteServ(user->fd,"314 %s %s %s %s * :%s",user->nick,i->second->nick,i->second->ident,i->second->dhost,i->second->fullname);
		WriteServ(user->fd,"312 %s %s %s :%s",user->nick,i->second->nick,i->second->server,b);
		WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
	}

}

void handle_trace(char **parameters, int pcnt, userrec *user)
{
  	for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
	{
		if (i->second)
		{
			if (isnick(i->second->nick))
			{
				if (strchr(i->second->modes,'o'))
				{
					WriteServ(user->fd,"205 %s :Oper 0 %s",user->nick,i->second->nick);
				}
				else
				{
					WriteServ(user->fd,"204 %s :User 0 %s",user->nick,i->second->nick);
				}
			}
			else
			{
				WriteServ(user->fd,"203 %s :???? 0 [%s]",user->nick,i->second->host);
			}
		}
	}
}

void handle_stats(char **parameters, int pcnt, userrec *user)
{
	if (pcnt != 1)
	{
		return;
	}
	if (strlen(parameters[0])>1)
	{
		/* make the stats query 1 character long */
		parameters[0][1] = '\0';
	}

	/* stats m (list number of times each command has been used, plus bytecount) */
	if (!strcasecmp(parameters[0],"m"))
	{
		for (int i = 0; i < cmdlist.size(); i++)
		{
			if (cmdlist[i].handler_function)
			{
				if (cmdlist[i].use_count)
				{
					/* RPL_STATSCOMMANDS */
					WriteServ(user->fd,"212 %s %s %d %d",user->nick,cmdlist[i].command,cmdlist[i].use_count,cmdlist[i].total_bytes);
				}
			}
		}
			
	}

	/* stats z (debug and memory info) */
	if (!strcasecmp(parameters[0],"z"))
	{
		WriteServ(user->fd,"249 %s :Users(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,clientlist.size(),clientlist.size()*sizeof(userrec),clientlist.bucket_count());
		WriteServ(user->fd,"249 %s :Channels(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,chanlist.size(),chanlist.size()*sizeof(chanrec),chanlist.bucket_count());
		WriteServ(user->fd,"249 %s :Commands(VECTOR) %d (%d bytes)",user->nick,cmdlist.size(),cmdlist.size()*sizeof(command_t));
		WriteServ(user->fd,"249 %s :MOTD(VECTOR) %d, RULES(VECTOR) %d",user->nick,MOTD.size(),RULES.size());
		WriteServ(user->fd,"249 %s :address_cache(HASH_MAP) %d (%d buckets)",user->nick,IP.size(),IP.bucket_count());
		WriteServ(user->fd,"249 %s :Modules(VECTOR) %d (%d)",user->nick,modules.size(),modules.size()*sizeof(Module));
		WriteServ(user->fd,"249 %s :ClassFactories(VECTOR) %d (%d)",user->nick,factory.size(),factory.size()*sizeof(ircd_module));
		WriteServ(user->fd,"249 %s :Ports(STATIC_ARRAY) %d",user->nick,boundPortCount);
	}
	
	/* stats o */
	if (!strcasecmp(parameters[0],"o"))
	{
		for (int i = 0; i < ConfValueEnum("oper"); i++)
		{
			char LoginName[MAXBUF];
			char HostName[MAXBUF];
			char OperType[MAXBUF];
			ConfValue("oper","name",i,LoginName);
			ConfValue("oper","host",i,HostName);
			ConfValue("oper","type",i,OperType);
			WriteServ(user->fd,"243 %s O %s * %s %s 0",user->nick,HostName,LoginName,OperType);
		}
	}
	
	/* stats l (show user I/O stats) */
	if (!strcasecmp(parameters[0],"l"))
	{
		WriteServ(user->fd,"211 %s :server:port nick bytes_in cmds_in bytes_out cmds_out",user->nick);
	  	for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
		{
			if (isnick(i->second->nick))
			{
				WriteServ(user->fd,"211 %s :%s:%d %s %d %d %d %d",user->nick,ServerName,i->second->port,i->second->nick,i->second->bytes_in,i->second->cmds_in,i->second->bytes_out,i->second->cmds_out);
			}
			else
			{
				WriteServ(user->fd,"211 %s :%s:%d (unknown@%d) %d %d %d %d",user->nick,ServerName,i->second->port,i->second->fd,i->second->bytes_in,i->second->cmds_in,i->second->bytes_out,i->second->cmds_out);
			}
			
		}
	}
	
	/* stats u (show server uptime) */
	if (!strcasecmp(parameters[0],"u"))
	{
		time_t current_time = 0;
		current_time = time(NULL);
		time_t server_uptime = current_time - startup_time;
		struct tm* stime;
		stime = gmtime(&server_uptime);
		/* i dont know who the hell would have an ircd running for over a year nonstop, but
		 * Craig suggested this, and it seemed a good idea so in it went */
		if (stime->tm_year > 70)
		{
			WriteServ(user->fd,"242 %s :Server up %d years, %d days, %.2d:%.2d:%.2d",user->nick,(stime->tm_year-70),stime->tm_yday,stime->tm_hour,stime->tm_min,stime->tm_sec);
		}
		else
		{
			WriteServ(user->fd,"242 %s :Server up %d days, %.2d:%.2d:%.2d",user->nick,stime->tm_yday,stime->tm_hour,stime->tm_min,stime->tm_sec);
		}
	}

	WriteServ(user->fd,"219 %s %s :End of /STATS report",user->nick,parameters[0]);
	WriteOpers("*** Notice: Stats '%s' requested by %s (%s@%s)",parameters[0],user->nick,user->ident,user->host);
	
}

void handle_oper(char **parameters, int pcnt, userrec *user)
{
	char LoginName[MAXBUF];
	char Password[MAXBUF];
	char OperType[MAXBUF];
	char TypeName[MAXBUF];
	char Hostname[MAXBUF];
	int i,j;

	for (i = 0; i < ConfValueEnum("oper"); i++)
	{
		ConfValue("oper","name",i,LoginName);
		ConfValue("oper","password",i,Password);
		if ((!strcmp(LoginName,parameters[0])) && (!strcmp(Password,parameters[1])))
		{
			/* correct oper credentials */
			ConfValue("oper","type",i,OperType);
			WriteOpers("*** %s (%s@%s) is now an IRC operator of type %s",user->nick,user->ident,user->host,OperType);
			WriteServ(user->fd,"381 %s :You are now an IRC operator of type %s",user->nick,OperType);
			WriteServ(user->fd,"MODE %s :+o",user->nick);
			for (j =0; j < ConfValueEnum("type"); j++)
			{
				ConfValue("type","name",j,TypeName);
				if (!strcmp(TypeName,OperType))
				{
					/* found this oper's opertype */
					ConfValue("type","host",j,Hostname);
					strncpy(user->dhost,Hostname,256);
				}
			}
			if (!strchr(user->modes,'o'))
			{
				strcat(user->modes,"o");
			}
			return;
		}
	}
	/* no such oper */
	WriteServ(user->fd,"491 %s :Invalid oper credentials",user->nick);
	WriteOpers("*** WARNING! Failed oper attempt by %s!%s@%s!",user->nick,user->ident,user->host);
}
				
void handle_nick(char **parameters, int pcnt, userrec *user)
{
	if (pcnt < 1) 
	{
		debug("not enough params for handle_nick");
		return;
	}
	if (!parameters[0])
	{
		debug("invalid parameter passed to handle_nick");
		return;
	}
	if (!strlen(parameters[0]))
	{
		debug("zero length new nick passed to handle_nick");
		return;
	}
	if (!user)
	{
		debug("invalid user passed to handle_nick");
		return;
	}
	if (!user->nick)
	{
		debug("invalid old nick passed to handle_nick");
		return;
	}
	if (!strcasecmp(user->nick,parameters[0]))
	{
		debug("old nick is new nick, skipping");
		return;
	}
	else
	{
		if (strlen(parameters[0]) > 1)
		{
			if (parameters[0][0] == ':')
			{
				*parameters[0]++;
			}
		}
		if ((Find(parameters[0])) && (Find(parameters[0]) != user))
		{
			WriteServ(user->fd,"433 %s %s :Nickname is already in use.",user->nick,parameters[0]);
			return;
		}
	}
	if (isnick(parameters[0]) == 0)
	{
		WriteServ(user->fd,"432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
		return;
	}

	if (user->registered == 7)
	{
		WriteCommon(user,"NICK %s",parameters[0]);
	}
	
	/* change the nick of the user in the users_hash */
	user = ReHashNick(user->nick, parameters[0]);
	/* actually change the nick within the record */
	if (!user) return;
	if (!user->nick) return;

	strncpy(user->nick, parameters[0],NICKMAX);

	debug("new nick set: %s",user->nick);
	
	if (user->registered < 3)
		user->registered = (user->registered | 2);
	if (user->registered == 3)
	{
		/* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
		ConnectUser(user);
	}
	debug("exit nickchange: %s",user->nick);
}

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 (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;
	}
	strcpy(temp,cmd);
	if (!strchr(cmd,' '))
	{
		/* no parameters, lets skip the formalities and not chop up
		 * the string */
		items = 0;
		command_p[0] = NULL;
		parameters = NULL;
		for (int i = 0; i <= strlen(cmd); i++)
		{
			cmd[i] = toupper(cmd[i]);
		}
	}
	else
	{
		strcpy(cmd,"");
		j = 0;
		/* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
		for (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 (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 (i = 0; i <= strlen(cmd); i++)
			{
				cmd[i] = toupper(cmd[i]);
			}
		}

	}
	
	cmd_found = 0;

	for (i = 0; i != cmdlist.size(); i++)
	{
		if (strcmp(cmdlist[i].command,""))
		{
			if (!strcmp(command, cmdlist[i].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)
				{
					user->idle_lastmsg = time(NULL);
					/* activity resets the ping pending timer */
					user->nping = time(NULL) + 120;
					if ((items) < cmdlist[i].min_params)
					{
					        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))
					{
					        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 the command isnt USER, PASS, or NICK, and nick is empty,
		 * deny command! */
					if ((strcmp(command,"USER")) && (strcmp(command,"NICK")) && (strcmp(command,"PASS")))
					{
						if ((!isnick(user->nick)) || (user->registered != 7))
						{
						        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) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
					{
					        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++;
								}
								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
					{
					        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))
	{
	        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)
{
	command_t comm;
	/* create the command and push it onto the table */	
	strcpy(comm.command,cmd);
	comm.handler_function = f;
	comm.flags_needed = flags;
	comm.min_params = minparams;
	comm.use_count = 0;
	comm.total_bytes = 0;
	cmdlist.push_back(comm);
}

void SetupCommandTable(void)
{
  createcommand("USER",handle_user,0,4);
  createcommand("NICK",handle_nick,0,1);
  createcommand("QUIT",handle_quit,0,1);
  createcommand("VERSION",handle_version,0,0);
  createcommand("PING",handle_ping,0,1);
  createcommand("PONG",handle_pong,0,1);
  createcommand("ADMIN",handle_admin,0,0);
  createcommand("PRIVMSG",handle_privmsg,0,2);
  createcommand("INFO",handle_info,0,0);
  createcommand("TIME",handle_time,0,0);
  createcommand("WHOIS",handle_whois,0,1);
  createcommand("WALLOPS",handle_wallops,'o',1);
  createcommand("NOTICE",handle_notice,0,2);
  createcommand("JOIN",handle_join,0,1);
  createcommand("NAMES",handle_names,0,1);
  createcommand("PART",handle_part,0,1);
  createcommand("KICK",handle_kick,0,2);
  createcommand("MODE",handle_mode,0,1);
  createcommand("TOPIC",handle_topic,0,1);
  createcommand("WHO",handle_who,0,1);
  createcommand("MOTD",handle_motd,0,0);
  createcommand("RULES",handle_join,0,0);
  createcommand("OPER",handle_oper,0,2);
  createcommand("LIST",handle_list,0,0);
  createcommand("DIE",handle_die,'o',1);
  createcommand("RESTART",handle_restart,'o',1);
  createcommand("KILL",handle_kill,'o',2);
  createcommand("REHASH",handle_rehash,'o',0);
  createcommand("LUSERS",handle_lusers,0,0);
  createcommand("STATS",handle_stats,0,1);
  createcommand("USERHOST",handle_userhost,0,1);
  createcommand("AWAY",handle_away,0,0);
  createcommand("ISON",handle_ison,0,0);
  createcommand("SUMMON",handle_summon,0,0);
  createcommand("USERS",handle_users,0,0);
  createcommand("INVITE",handle_invite,0,2);
  createcommand("PASS",handle_pass,0,1);
  createcommand("TRACE",handle_trace,'o',0);
  createcommand("WHOWAS",handle_whowas,0,1);
}

void process_buffer(userrec *user)
{
	char cmd[MAXBUF];
	int i;
	if (!user->inbuf)
	{
		return;
	}
	if (!strcmp(user->inbuf,""))
	{
		return;
	}
	strncpy(cmd,user->inbuf,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';
	}
	strcpy(user->inbuf,"");
	if (!strcmp(cmd,""))
	{
		return;
	}
        debug("InspIRCd: processing: %s %s",user->nick,cmd);
	process_command(user,cmd);
}

int InspIRCd(void)
{
  struct sockaddr_in client, server;
  int portCount = 0, ports[MAXSOCKS];
  char addrs[MAXBUF][255];
  int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
  socklen_t length;
  int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE;
  int selectResult = 0;
  char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF];
  char resolvedHost[MAXBUF];
  fd_set selectFds;
  struct timeval tv;
  int count2;

  debug("InspIRCd: startup: begin");
  debug("$Id$");
  if ((geteuid()) && (getuid()) == 0)
  {
	printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
	Exit(ERROR);
	debug("InspIRCd: startup: not starting with UID 0!");
  }
  SetupCommandTable();
  debug("InspIRCd: startup: default command table set up");

  ReadConfig();
  if (strcmp(DieValue,"")) 
  { 
	printf("WARNING: %s\n\n",DieValue);
	exit(0); 
  }  
  debug("InspIRCd: startup: read config");
  
  for (count = 0; count < ConfValueEnum("bind"); count++)
  {
	ConfValue("bind","port",count,configToken);
	ConfValue("bind","address",count,Addr);
	ports[count] = atoi(configToken);
	strcpy(addrs[count],Addr);
	debug("InspIRCd: startup: read binding %s:%d from config",addrs[count],ports[count]);
  }
  portCount = ConfValueEnum("bind");
  debug("InspIRCd: startup: read %d total ports",portCount);

  debug("InspIRCd: startup: InspIRCd is now running!");

  printf("\n");
  for (count = 0; count < ConfValueEnum("module"); count++)
  {
	char modfile[MAXBUF];
	ConfValue("module","name",count,configToken);
	sprintf(modfile,"%s/%s",MOD_PATH,configToken);
	printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
	debug("InspIRCd: startup: Loading module: %s",modfile);
	
  	factory[count] = new ircd_module(modfile);
	if (factory[count]->LastError())
	{
		debug("Unable to load %s: %s",modfile,factory[count]->LastError());
		sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
		Exit(ERROR);
	}
	if (factory[count]->factory)
	{
		modules[count] = factory[count]->factory->CreateModule();
		/* save the module and the module's classfactory, if
		 * this isnt done, random crashes can occur :/ */
	}
	else
	{
		debug("Unable to load %s",modfile);
		sprintf("Unable to load %s\nExiting...\n",modfile);
		Exit(ERROR);
	}
  }
  MODCOUNT = count - 1;
  debug("Total loaded modules: %d",MODCOUNT+1);

  printf("\nInspIRCd is now running!\n");

  startup_time = time(NULL);
  
  if (DaemonSeed() == ERROR)
  {
     debug("InspIRCd: startup: can't daemonise");
     printf("ERROR: could not go into daemon mode. Shutting down.\n");
     Exit(ERROR);
  }
  
  
  /* setup select call */
  FD_ZERO(&selectFds);
  debug("InspIRCd: startup: zero selects");

  for (count = 0; count < portCount; count++)
  {
      if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
      {
	  debug("InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
	  return(ERROR);
      }
      if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
      {
	  debug("InspIRCd: startup: failed to bind port %d",ports[count]);
      }
      else			/* well we at least bound to one socket so we'll continue */
      {
	  boundPortCount++;
      }
  }

  debug("InspIRCd: startup: total bound ports %d",boundPortCount);
  
  /* if we didn't bind to anything then abort */
  if (boundPortCount == 0)
  {
     debug("InspIRCd: startup: no ports bound, bailing!");
     return (ERROR);
  }

  length = sizeof (client);
  int flip_flop = 0;
  
  /* main loop for multiplexing/resetting */
  for (;;)
  {
      /* set up select call */
      for (count = 0; count < boundPortCount; count++)
      {
		FD_SET (openSockfd[count], &selectFds);
      }
	
      /* added timeout! select was waiting forever... wank... :/ */
      tv.tv_usec = 0;

      flip_flop++;
      if (flip_flop > 20)
      {
	      tv.tv_usec = 1;
	      flip_flop = 0;
      }
      
      tv.tv_sec = 0;
      selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);

  	for (user_hash::iterator count2 = clientlist.begin(); count2 != clientlist.end(); count2++)
	{
		char data[MAXBUF];

		if (!count2->second) break;
		
		if (count2->second)
		if (count2->second->fd)
		{
			if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
			{
				if (!count2->second->lastping) 
				{
				  	debug("InspIRCd: ping timeout: %s",count2->second->nick);
					kill_link(count2->second,"Ping timeout");
					break;
				}
				Write(count2->second->fd,"PING :%s",ServerName);
			  	debug("InspIRCd: pinging: %s",count2->second->nick);
				count2->second->lastping = 0;
				count2->second->nping = time(NULL)+120;
			}
			
			result = read(count2->second->fd, data, 1);
			// result EAGAIN means nothing read
			if (result == EAGAIN)
			{
			}
			else
			if (result == 0)
			{
			  	debug("InspIRCd: Exited: %s",count2->second->nick);
				kill_link(count2->second,"Client exited");
			}
			else if (result > 0)
			{
				strncat(count2->second->inbuf, data, result);
				if (strchr(count2->second->inbuf, '\n') || strchr(count2->second->inbuf, '\r'))
				{
					/* at least one complete line is waiting to be processed */
					if (!count2->second->fd)
						break;
					else
					{
						process_buffer(count2->second);
						break;
					}
				}
			}
		}
	}

      /* 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))
            {
              incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
	      
              address_cache::iterator iter = IP.find(client.sin_addr);
	      bool iscached = false;
              if (iter == IP.end())
              {
                        /* ip isn't in cache, add it */
                        strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
			if(CleanAndResolve(resolved, target) != TRUE)
			{
				strncpy(resolved,target,MAXBUF);
			}
                        /* hostname now in 'target' */
                        IP[client.sin_addr] = new string(resolved);
			/* hostname in cache */
              }
              else
              {
			/* found ip (cached) */
	                strncpy(resolved, iter->second->c_str(), MAXBUF);
			iscached = true;
	      }

	      if (incomingSockfd < 0)
	      {
	        WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
	  	debug("InspIRCd: accept failed: %d",ports[count]);
	        break;
	      }
	      AddClient(incomingSockfd, resolved, ports[count], iscached);
  	      debug("InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
	      break;
	    }

	}
      }
  }

  /* not reached */
  close (incomingSockfd);
}