/**

  * vim: set ts=4 :

  * ===============================================================

  * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.

  * ===============================================================

  *

  * This file is not open source and may not be copied without explicit

  * written permission of AlliedModders LLC.  This file may not be redistributed 

  * in whole or significant part.

  * For information, see LICENSE.txt or http://www.sourcemod.net/license.php

  *

  * Version: $Id$

  */

 #include "PlayerManager.h"

 #include "ForwardSys.h"

 #include "ShareSys.h"

 #include "AdminCache.h"

 #include "ConCmdManager.h"

 PlayerManager g_Players;

 SH_DECL_HOOK5(IServerGameClients, ClientConnect, SH_NOATTRIB, 0, bool, edict_t *, const char *, const char *, char *, int);

 SH_DECL_HOOK2_void(IServerGameClients, ClientPutInServer, SH_NOATTRIB, 0, edict_t *, const char *);

 SH_DECL_HOOK1_void(IServerGameClients, ClientDisconnect, SH_NOATTRIB, 0, edict_t *);

 SH_DECL_HOOK1_void(IServerGameClients, ClientCommand, SH_NOATTRIB, 0, edict_t *);

 SH_DECL_HOOK1_void(IServerGameClients, ClientSettingsChanged, SH_NOATTRIB, 0, edict_t *);

 SH_DECL_HOOK3_void(IServerGameDLL, ServerActivate, SH_NOATTRIB, 0, edict_t *, int, int);

 PlayerManager::PlayerManager()

 {

 	m_AuthQueue = NULL;

 	m_FirstPass = true;

 	m_UserIdLookUp = new int[USHRT_MAX];

 	memset(m_UserIdLookUp, 0, sizeof(int) * USHRT_MAX);

 }

 PlayerManager::~PlayerManager()

 {

 	delete [] m_AuthQueue;

 	delete [] m_UserIdLookUp;

 }

 void PlayerManager::OnSourceModAllInitialized()

 {

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientConnect, serverClients, this, &PlayerManager::OnClientConnect, false);

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientConnect, serverClients, this, &PlayerManager::OnClientConnect_Post, true);

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientPutInServer, serverClients, this, &PlayerManager::OnClientPutInServer, true);

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &PlayerManager::OnClientDisconnect, false);

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &PlayerManager::OnClientDisconnect_Post, true);

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientCommand, serverClients, this, &PlayerManager::OnClientCommand, false);

 	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientSettingsChanged, serverClients, this, &PlayerManager::OnClientSettingsChanged, true);

 	SH_ADD_HOOK_MEMFUNC(IServerGameDLL, ServerActivate, gamedll, this, &PlayerManager::OnServerActivate, true);

 	g_ShareSys.AddInterface(NULL, this);

 	ParamType p1[] = {Param_Cell, Param_String, Param_Cell};

 	ParamType p2[] = {Param_Cell};

 	m_clconnect = g_Forwards.CreateForward("OnClientConnect", ET_Event, 3, p1);

 	m_clputinserver = g_Forwards.CreateForward("OnClientPutInServer", ET_Ignore, 1, p2);

 	m_cldisconnect = g_Forwards.CreateForward("OnClientDisconnect", ET_Ignore, 1, p2);

 	m_cldisconnect_post = g_Forwards.CreateForward("OnClientDisconnect_Post", ET_Ignore, 1, p2);

 	m_clcommand = g_Forwards.CreateForward("OnClientCommand", ET_Hook, 2, NULL, Param_Cell, Param_Cell);

 	m_clinfochanged = g_Forwards.CreateForward("OnClientSettingsChanged", ET_Ignore, 1, p2);

 	m_clauth = g_Forwards.CreateForward("OnClientAuthorized", ET_Ignore, 2, NULL, Param_Cell, Param_String);

 	m_onActivate = g_Forwards.CreateForward("OnServerLoad", ET_Ignore, 0, NULL);

 	m_onActivate2 = g_Forwards.CreateForward("OnMapStart", ET_Ignore, 0, NULL);

 }

 void PlayerManager::OnSourceModShutdown()

 {

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientConnect, serverClients, this, &PlayerManager::OnClientConnect, false);

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientPutInServer, serverClients, this, &PlayerManager::OnClientPutInServer, true);

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &PlayerManager::OnClientDisconnect, false);

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &PlayerManager::OnClientDisconnect_Post, true);

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientCommand, serverClients, this, &PlayerManager::OnClientCommand, false);

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientSettingsChanged, serverClients, this, &PlayerManager::OnClientSettingsChanged, true);

 	SH_REMOVE_HOOK_MEMFUNC(IServerGameDLL, ServerActivate, gamedll, this, &PlayerManager::OnServerActivate, true);

 	/* Release forwards */

 	g_Forwards.ReleaseForward(m_clconnect);

 	g_Forwards.ReleaseForward(m_clputinserver);

 	g_Forwards.ReleaseForward(m_cldisconnect);

 	g_Forwards.ReleaseForward(m_cldisconnect_post);

 	g_Forwards.ReleaseForward(m_clcommand);

 	g_Forwards.ReleaseForward(m_clinfochanged);

 	g_Forwards.ReleaseForward(m_clauth);

 	g_Forwards.ReleaseForward(m_onActivate);

 	g_Forwards.ReleaseForward(m_onActivate2);

 	delete [] m_Players;

 }

 void PlayerManager::OnServerActivate(edict_t *pEdictList, int edictCount, int clientMax)

 {

 	if (m_FirstPass)

 	{

 		/* Initialize all players */

 		m_maxClients = clientMax;

 		m_PlayerCount = 0;

 		m_Players = new CPlayer[m_maxClients + 1];

 		m_AuthQueue = new unsigned int[m_maxClients + 1];

 		m_FirstPass = false;

 		memset(m_AuthQueue, 0, sizeof(unsigned int) * (m_maxClients + 1));

 	}

 	m_onActivate->Execute(NULL);

 	m_onActivate2->Execute(NULL);

 }

 void PlayerManager::RunAuthChecks()

 {

 	CPlayer *pPlayer;

 	const char *authstr;

 	unsigned int removed = 0;

 	for (unsigned int i=1; i<=m_AuthQueue[0]; i++)

 	{

 		pPlayer = GetPlayerByIndex(m_AuthQueue[i]);

 		authstr = engine->GetPlayerNetworkIDString(pPlayer->m_pEdict);

 		if (authstr && authstr[0] != '\0'

 			&& (strcmp(authstr, "STEAM_ID_PENDING") != 0))

 		{

 			/* Set authorization */

 			pPlayer->m_AuthID.assign(authstr);

 			pPlayer->m_IsAuthorized = true;

 			/* Mark as removed from queue */

 			unsigned int client = m_AuthQueue[i];

 			m_AuthQueue[i] = 0;

 			removed++;

 			/* Send to extensions */

 			List<IClientListener *>::iterator iter;

 			IClientListener *pListener;

 			for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 			{

 				pListener = (*iter);

 				pListener->OnClientAuthorized(client, authstr);

 				if (!pPlayer->IsConnected())

 				{

 					break;

 				}

 			}

 			/* Send to plugins if player is still connected */

 			if (pPlayer->IsConnected() && m_clauth->GetFunctionCount())

 			{

 				/* :TODO: handle the case of a player disconnecting in the middle */

 				m_clauth->PushCell(client);

 				m_clauth->PushString(authstr);

 				m_clauth->Execute(NULL);

 			}

 		}

 	}

 	/* Clean up the queue */

 	if (removed)

 	{

 		/* We don't have to compcat the list if it's empty */

 		if (removed != m_AuthQueue[0])

 		{

 			unsigned int diff = 0;

 			for (unsigned int i=1; i<=m_AuthQueue[0]; i++)

 			{

 				/* If this member is removed... */

 				if (m_AuthQueue[i] == 0)

 				{

 					/* Increase the differential */

 					diff++;

 				} else {

 					/* diff cannot increase faster than i+1 */

 					assert(i > diff);

 					assert(i - diff >= 1);

 					/* move this index down */

 					m_AuthQueue[i - diff] = m_AuthQueue[i];

 				}

 			}

 			m_AuthQueue[0] -= removed;

 		} else {

 			m_AuthQueue[0] = 0;

 			g_SourceMod.SetAuthChecking(false);

 		}

 	}

 }

 bool PlayerManager::OnClientConnect(edict_t *pEntity, const char *pszName, const char *pszAddress, char *reject, int maxrejectlen)

 {

 	int client = engine->IndexOfEdict(pEntity);

 	List<IClientListener *>::iterator iter;

 	IClientListener *pListener = NULL;

 	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 	{

 		pListener = (*iter);

 		if (!pListener->InterceptClientConnect(client, reject, maxrejectlen))

 		{

 			return false;

 		}

 	}

 	cell_t res = 1;

 	m_Players[client].Initialize(pszName, pszAddress, pEntity);

 	m_clconnect->PushCell(client);

 	m_clconnect->PushStringEx(reject, maxrejectlen, SM_PARAM_STRING_UTF8, SM_PARAM_COPYBACK);

 	m_clconnect->PushCell(maxrejectlen);

 	m_clconnect->Execute(&res, NULL);

 	if (res)

 	{

 		if (!m_Players[client].IsAuthorized())

 		{

 			m_AuthQueue[++m_AuthQueue[0]] = client;

 			g_SourceMod.SetAuthChecking(true);

 		}

 	} else {

 		RETURN_META_VALUE(MRES_SUPERCEDE, false);

 	}

 	m_UserIdLookUp[engine->GetPlayerUserId(pEntity)] = client;

 	return true;

 }

 bool PlayerManager::OnClientConnect_Post(edict_t *pEntity, const char *pszName, const char *pszAddress, char *reject, int maxrejectlen)

 {

 	int client = engine->IndexOfEdict(pEntity);

 	bool orig_value = META_RESULT_ORIG_RET(bool);

 	if (orig_value)

 	{

 		List<IClientListener *>::iterator iter;

 		IClientListener *pListener = NULL;

 		for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 		{

 			pListener = (*iter);

 			pListener->OnClientConnected(client);

 		}

 	}

 	return true;

 }

 void PlayerManager::OnClientPutInServer(edict_t *pEntity, const char *playername)

 {

 	cell_t res;

 	int client = engine->IndexOfEdict(pEntity);

 	CPlayer *pPlayer = GetPlayerByIndex(client);

 	/* If they're not connected, they're a bot */

 	if (!pPlayer->IsConnected())

 	{

 		/* Run manual connection routines */

 		char error[255];

 		const char *authid = engine->GetPlayerNetworkIDString(pEntity);

 		pPlayer->Authorize(authid);

 		if (!OnClientConnect(pEntity, playername, "127.0.0.1", error, sizeof(error)))

 		{

 			/* :TODO: kick the bot if it's rejected */

 			return;

 		}

 		List<IClientListener *>::iterator iter;

 		IClientListener *pListener = NULL;

 		for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 		{

 			pListener = (*iter);

 			pListener->OnClientConnected(client);

 			/* See if bot was kicked */

 			if (!pPlayer->IsConnected())

 			{

 				return;

 			}

 		}

 		/* Now do authorization */

 		for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 		{

 			pListener = (*iter);

 			pListener->OnClientAuthorized(client, authid);

 			/* See if bot was kicked */

 			if (!pPlayer->IsConnected())

 			{

 				return;

 			}

 		}

 		/* Finally, tell plugins */

 		if (m_clauth->GetFunctionCount())

 		{

 			m_clauth->PushCell(client);

 			m_clauth->PushString(authid);

 			m_clauth->Execute(NULL);

 		}

 	}

 	if (playerinfo)

 	{

 		pPlayer->m_Info = playerinfo->GetPlayerInfo(pEntity);

 	}

 	List<IClientListener *>::iterator iter;

 	IClientListener *pListener = NULL;

 	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 	{

 		pListener = (*iter);

 		pListener->OnClientPutInServer(client);

 		/* See if player was kicked */

 		if (!pPlayer->IsConnected())

 		{

 			return;

 		}

 	}

 	m_Players[client].Connect();

 	m_PlayerCount++;

 	m_clputinserver->PushCell(client);

 	m_clputinserver->Execute(&res, NULL);

 }

 void PlayerManager::OnClientDisconnect(edict_t *pEntity)

 {

 	cell_t res;

 	int client = engine->IndexOfEdict(pEntity);

 	if (m_Players[client].IsConnected())

 	{

 		m_cldisconnect->PushCell(client);

 		m_cldisconnect->Execute(&res, NULL);

 	}

 	if (m_Players[client].IsInGame())

 	{

 		m_PlayerCount--;

 	}

 	List<IClientListener *>::iterator iter;

 	IClientListener *pListener = NULL;

 	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 	{

 		pListener = (*iter);

 		pListener->OnClientDisconnecting(client);

 	}

 	/**

 	 * Remove client from auth queue if necessary

 	 */

 	if (!m_Players[client].IsAuthorized())

 	{

 		for (unsigned int i=1; i<=m_AuthQueue[0]; i++)

 		{

 			if (m_AuthQueue[i] == (unsigned)client)

 			{

 				/* Move everything ahead of us back by one */

 				for (unsigned int j=i+1; j<=m_AuthQueue[0]; j++)

 				{

 					m_AuthQueue[j-1] = m_AuthQueue[j];

 				}

 				/* Remove us and break */

 				m_AuthQueue[0]--;

 				break;

 			}

 		}

 	}

 	m_Players[client].Disconnect();

 	m_UserIdLookUp[engine->GetPlayerUserId(pEntity)] = 0;

 }

 void PlayerManager::OnClientDisconnect_Post(edict_t *pEntity)

 {

 	cell_t res;

 	int client = engine->IndexOfEdict(pEntity);

 	m_cldisconnect_post->PushCell(client);

 	m_cldisconnect_post->Execute(&res, NULL);

 	List<IClientListener *>::iterator iter;

 	IClientListener *pListener = NULL;

 	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

 	{

 		pListener = (*iter);

 		pListener->OnClientDisconnected(client);

 	}

 }

 void PlayerManager::OnClientCommand(edict_t *pEntity)

 {

 	cell_t res = Pl_Continue;

 	int client = engine->IndexOfEdict(pEntity);

 	int args = engine->Cmd_Argc() - 1;

 	m_clcommand->PushCell(client);

 	m_clcommand->PushCell(args);

 	m_clcommand->Execute(&res, NULL);

 	if (res >= Pl_Stop)

 	{

 		RETURN_META(MRES_SUPERCEDE);

 	}

 	res = g_ConCmds.DispatchClientCommand(client, (ResultType)res);

 	if (res >= Pl_Handled)

 	{

 		RETURN_META(MRES_SUPERCEDE);

 	}

 }

 void PlayerManager::OnClientSettingsChanged(edict_t *pEntity)

 {

 	cell_t res;

 	int client = engine->IndexOfEdict(pEntity);

 	m_clinfochanged->PushCell(engine->IndexOfEdict(pEntity));

 	m_clinfochanged->Execute(&res, NULL);

 	m_Players[client].SetName(engine->GetClientConVarValue(client, "name"));

 }

 int PlayerManager::GetMaxClients()

 {

 	return m_maxClients;

 }

 CPlayer *PlayerManager::GetPlayerByIndex(int client) const

 {

 	if (client > m_maxClients || client < 1)

 	{

 		return NULL;

 	}

 	return &m_Players[client];

 }

 int PlayerManager::GetNumPlayers()

 {

 	return m_PlayerCount;

 }

 int PlayerManager::GetClientOfUserId(int userid)

 {

 	if (userid < 0 || userid > USHRT_MAX)

 	{

 		return 0;

 	}

 	int client = m_UserIdLookUp[userid];

 	/* Verify the userid.  The cache can get messed up with older

 	 * Valve engines.  :TODO: If this gets fixed, do an old engine 

 	 * check before invoking this backwards compat code.

 	 */

 	if (client)

 	{

 		CPlayer *player = GetPlayerByIndex(client);

 		if (player && player->IsConnected())

 		{

 			int realUserId = engine->GetPlayerUserId(player->GetEdict());

 			if (realUserId == userid)

 			{

 				return client;

 			}

 		}

 	}

 	/* If we can't verify the userid, we have to do a manual loop */

 	CPlayer *player;

 	for (int i = 1; i <= m_maxClients; i++)

 	{

 		player = GetPlayerByIndex(i);

 		if (!player || !player->IsConnected())

 		{

 			continue;

 		}

 		if (engine->GetPlayerUserId(player->GetEdict()) == userid)

 		{

 			m_UserIdLookUp[userid] = i;

 			return i;

 		}

 	}

 	return 0;

 }

 void PlayerManager::AddClientListener(IClientListener *listener)

 {

 	m_hooks.push_back(listener);

 }

 void PlayerManager::RemoveClientListener(IClientListener *listener)

 {

 	m_hooks.remove(listener);

 }

 IGamePlayer *PlayerManager::GetGamePlayer(edict_t *pEdict)

 {

 	int index = engine->IndexOfEdict(pEdict);

 	return GetGamePlayer(index);

 }

 IGamePlayer *PlayerManager::GetGamePlayer(int client)

 {

 	return GetPlayerByIndex(client);

 }

 void PlayerManager::ClearAdminId(AdminId id)

 {

 	for (int i=1; i<=m_maxClients; i++)

 	{

 		if (m_Players[i].m_Admin == id)

 		{

 			m_Players[i].DumpAdmin(true);

 		}

 	}

 }

 void PlayerManager::ClearAllAdmins()

 {

 	for (int i=1; i<=m_maxClients; i++)

 	{

 		m_Players[i].DumpAdmin(true);

 	}

 }

 /*******************

  *** PLAYER CODE ***

  *******************/

 CPlayer::CPlayer()

 {

 	m_IsConnected = false;

 	m_IsInGame = false;

 	m_IsAuthorized = false;

 	m_pEdict = NULL;

 	m_Admin = INVALID_ADMIN_ID;

 	m_TempAdmin = false;

 	m_Info = NULL;

 }

 void CPlayer::Initialize(const char *name, const char *ip, edict_t *pEntity)

 {

 	m_IsConnected = true;

 	m_Name.assign(name);

 	m_Ip.assign(ip);

 	m_pEdict = pEntity;

 }

 void CPlayer::Connect()

 {

 	m_IsInGame = true;

 }

 void CPlayer::Authorize(const char *steamid)

 {

 	m_IsAuthorized = true;

 	m_AuthID.assign(steamid);

 }

 void CPlayer::Disconnect()

 {

 	DumpAdmin(false);

 	m_IsConnected = false;

 	m_IsInGame = false;

 	m_IsAuthorized = false;

 	m_Name.clear();

 	m_Ip.clear();

 	m_AuthID.clear();

 	m_pEdict = NULL;

 	m_Info = NULL;

 }

 void CPlayer::SetName(const char *name)

 {

 	m_Name.assign(name);

 }

 const char *CPlayer::GetName()

 {

 	return (m_Info) ? m_Info->GetName(): m_Name.c_str();

 }

 const char *CPlayer::GetIPAddress()

 {

 	return m_Ip.c_str();

 }

 const char *CPlayer::GetAuthString()

 {

 	return m_AuthID.c_str();

 }

 edict_t *CPlayer::GetEdict()

 {

 	return m_pEdict;

 }

 bool CPlayer::IsInGame()

 {

 	return m_IsInGame;

 }

 bool CPlayer::IsConnected()

 {

 	return m_IsConnected;

 }

 bool CPlayer::IsAuthorized()

 {

 	return m_IsAuthorized;

 }

 IPlayerInfo *CPlayer::GetPlayerInfo()

 {

 	return m_Info;

 }

 bool CPlayer::IsFakeClient()

 {

 	return (strcmp(m_AuthID.c_str(), "BOT") == 0);

 }

 void CPlayer::SetAdminId(AdminId id, bool temporary)

 {

 	if (!m_IsConnected)

 	{

 		return;

 	}

 	DumpAdmin(false);

 	m_Admin = id;

 	m_TempAdmin = temporary;

 }

 AdminId CPlayer::GetAdminId()

 {

 	return m_Admin;

 }

 void CPlayer::DumpAdmin(bool deleting)

 {

 	if (m_Admin != INVALID_ADMIN_ID)

 	{

 		if (m_TempAdmin && !deleting)

 		{

 			g_Admins.InvalidateAdmin(m_Admin);

 		}

 		m_Admin = INVALID_ADMIN_ID;

 		m_TempAdmin = false;

 	}

 }