////////////
	//SECURITY//
	////////////
//debugging, uncomment for viewing topic calls
//#define TOPIC_DEBUGGING 1

#define TOPIC_SPAM_DELAY	2		//2 ticks is about 2/10ths of a second; it was 4 ticks, but that caused too many clicks to be lost due to lag
#define UPLOAD_LIMIT		10485760	//Restricts client uploads to the server to 10MB //Boosted this thing. What's the worst that can happen?
#define MIN_CLIENT_VERSION	0		//Just an ambiguously low version for now, I don't want to suddenly stop people playing.
									//I would just like the code ready should it ever need to be used.
#define SUGGESTED_CLIENT_VERSION	511		// only integers (e.g: 510, 511) useful here. Does not properly handle minor versions (e.g: 510.58, 511.848)
#define SSD_WARNING_TIMER 30 // cycles, not seconds, so 30=60s

	/*
	When somebody clicks a link in game, this Topic is called first.
	It does the stuff in this proc and  then is redirected to the Topic() proc for the src=[0xWhatever]
	(if specified in the link). ie locate(hsrc).Topic()

	Such links can be spoofed.

	Because of this certain things MUST be considered whenever adding a Topic() for something:
		- Can it be fed harmful values which could cause runtimes?
		- Is the Topic call an admin-only thing?
		- If so, does it have checks to see if the person who called it (usr.client) is an admin?
		- Are the processes being called by Topic() particularly laggy?
		- If so, is there any protection against somebody spam-clicking a link?
	If you have any  questions about this stuff feel free to ask. ~Carn
	*/
/client/Topic(href, href_list, hsrc)
	if(!usr || usr != mob)	//stops us calling Topic for somebody else's client. Also helps prevent usr=null
		return

	// src should always be a UID; if it isn't, warn instead of failing entirely
	if(href_list["src"])
		hsrc = locateUID(href_list["src"])
		// If there's a ]_ in the src, it's a UID, so don't try to locate it
		if(!hsrc && !findtext(href_list["src"], "]_"))
			hsrc = locate(href_list["src"])
			if(hsrc)
				var/hsrc_info = datum_info_line(hsrc) || "[hsrc]"
				log_runtime(EXCEPTION("Got \\ref-based src in topic from [src] for [hsrc_info], should be UID: [href]"))

	#if defined(TOPIC_DEBUGGING)
	to_chat(world, "[src]'s Topic: [href] destined for [hsrc].")
	#endif

	if(href_list["nano_err"]) //nano throwing errors
		if(topic_debugging)
			to_chat(src, "## NanoUI: " + html_decode(href_list["nano_err"]))//NANO DEBUG HOOK



	if(href_list["asset_cache_confirm_arrival"])
//		to_chat(src, "ASSET JOB [href_list["asset_cache_confirm_arrival"]] ARRIVED.")
		var/job = text2num(href_list["asset_cache_confirm_arrival"])
		completed_asset_jobs += job
		return

	if(href_list["_src_"] == "chat")
		return chatOutput.Topic(href, href_list)

	//Reduces spamming of links by dropping calls that happen during the delay period
	if(next_allowed_topic_time > world.time)
		return
	next_allowed_topic_time = world.time + TOPIC_SPAM_DELAY

	//search the href for script injection
	if( findtext(href,"<script",1,0) )
		log_world("Attempted use of scripts within a topic call, by [src]")
		log_runtime(EXCEPTION("Attempted use of scripts within a topic call, by [src]"), src)
		message_admins("Attempted use of scripts within a topic call, by [src]")
		return

	//Admin PM
	if(href_list["priv_msg"])
		var/client/C = locate(href_list["priv_msg"])

		if(!C) // Might be a stealthmin ID, so pass it in straight
			C = href_list["priv_msg"]
		else if(C.UID() != href_list["priv_msg"])
			C = null // 404 client not found. Let cmd_admin_pm handle the error
		cmd_admin_pm(C, null, href_list["type"])
		return

	if(href_list["irc_msg"])
		if(!holder && received_irc_pm < world.time - 6000) //Worse they can do is spam IRC for 10 minutes
			to_chat(usr, "<span class='warning'>You are no longer able to use this, it's been more then 10 minutes since an admin on IRC has responded to you</span>")
			return
		if(mute_irc)
			to_chat(usr, "<span class='warning'You cannot use this as your client has been muted from sending messages to the admins on IRC</span>")
			return
		cmd_admin_irc_pm()
		return



	//Logs all hrefs
	if(config && config.log_hrefs)
		log_href("[src] (usr:[usr]\[[COORD(usr)]\]) : [hsrc ? "[hsrc] " : ""][href]")

	if(href_list["karmashop"])
		if(config.disable_karma)
			return

		switch(href_list["karmashop"])
			if("tab")
				karma_tab = text2num(href_list["tab"])
				karmashopmenu()
				return
			if("shop")
				if(href_list["KarmaBuy"])
					var/karma=verify_karma()
					if(isnull(karma)) //Doesn't display anything if karma database is down.
						return
					switch(href_list["KarmaBuy"])
						if("1")
							karma_purchase(karma,5,"job","Barber")
						if("2")
							karma_purchase(karma,5,"job","Brig Physician")
						if("3")
							karma_purchase(karma,30,"job","Nanotrasen Representative")
						if("5")
							karma_purchase(karma,30,"job","Blueshield")
						if("6")
							karma_purchase(karma,30,"job","Mechanic")
						if("7")
							karma_purchase(karma,45,"job","Magistrate")
						if("9")
							karma_purchase(karma,30,"job","Security Pod Pilot")
				if(href_list["KarmaBuy2"])
					var/karma=verify_karma()
					if(isnull(karma)) //Doesn't display anything if karma database is down.
						return
					switch(href_list["KarmaBuy2"])
						if("1")
							karma_purchase(karma,15,"species","Machine People","Machine")
						if("2")
							karma_purchase(karma,30,"species","Kidan")
						if("3")
							karma_purchase(karma,30,"species","Grey")
						if("4")
							karma_purchase(karma,45,"species","Vox")
						if("5")
							karma_purchase(karma,45,"species","Slime People")
						if("6")
							karma_purchase(karma,100,"species","Plasmaman")
						if("7")
							karma_purchase(karma,30,"species","Drask")
				if(href_list["KarmaRefund"])
					var/type = href_list["KarmaRefundType"]
					var/job = href_list["KarmaRefund"]
					var/cost = href_list["KarmaRefundCost"]
					karmarefund(type,job,cost)
					return

	switch(href_list["_src_"])
		if("holder")	hsrc = holder
		if("usr")		hsrc = mob
		if("prefs")		return prefs.process_link(usr,href_list)
		if("vars")		return view_var_Topic(href,href_list,hsrc)

	//Polls and shit
	if(href_list["showpoll"])
		handle_player_polling()
		return
	if(href_list["createpollwindow"])
		create_poll_window()
		return
	if(href_list["createpoll"])
		create_poll_function(href_list)
		return
	if(href_list["pollid"])
		var/pollid = href_list["pollid"]
		if(istext(pollid))
			pollid = text2num(pollid)
		if(isnum(pollid))
			poll_player(pollid)
		return
	if(href_list["pollresults"])
		var/pollid = href_list["pollresults"]
		if(istext(pollid))
			pollid = text2num(pollid)
		if(isnum(pollid))
			poll_results(pollid)
	if(href_list["votepollid"] && href_list["votetype"])
		if(!can_vote())
			return // No voting.
		var/pollid = text2num(href_list["votepollid"])
		var/votetype = href_list["votetype"]
		switch(votetype)
			if("OPTION")
				var/optionid = text2num(href_list["voteoptionid"])
				vote_on_poll(pollid, optionid)
			if("TEXT")
				var/replytext = href_list["replytext"]
				log_text_poll_reply(pollid, replytext)
			if("NUMVAL")
				var/id_min = text2num(href_list["minid"])
				var/id_max = text2num(href_list["maxid"])

				if( (id_max - id_min) > 100 )	//Basic exploit prevention
					to_chat(usr, "The option ID difference is too big. Please contact administration or the database admin.")
					return

				for(var/optionid = id_min; optionid <= id_max; optionid++)
					if(!isnull(href_list["o[optionid]"]))	//Test if this optionid was replied to
						var/rating
						if(href_list["o[optionid]"] == "abstain")
							rating = null
						else
							rating = text2num(href_list["o[optionid]"])
							if(!isnum(rating))
								return

						vote_on_numval_poll(pollid, optionid, rating)
			if("MULTICHOICE")
				var/id_min = text2num(href_list["minoptionid"])
				var/id_max = text2num(href_list["maxoptionid"])

				if( (id_max - id_min) > 100 )	//Basic exploit prevention
					to_chat(usr, "The option ID difference is too big. Please contact administration or the database admin.")
					return

				for(var/optionid = id_min; optionid <= id_max; optionid++)
					if(!isnull(href_list["option_[optionid]"]))	//Test if this optionid was selected
						vote_on_poll(pollid, optionid, 1)
		src << browse(null, "window=playerpoll")
		handle_player_polling()
	if(href_list["ssdwarning"])
		ssd_warning_acknowledged = TRUE
		to_chat(src, "<span class='notice'>SSD warning acknowledged.</span>")
	if(href_list["link_forum_account"])
		link_forum_account()
	switch(href_list["action"])
		if("openLink")
			src << link(href_list["link"])

	..()	//redirect to hsrc.Topic()

/client/proc/is_content_unlocked()
	if(!prefs.unlock_content)
		to_chat(src, "Become a BYOND member to access member-perks and features, as well as support the engine that makes this game possible. <a href='http://www.byond.com/membership'>Click here to find out more</a>.")
		return 0
	return 1

//Like for /atoms, but clients are their own snowflake FUCK
/client/proc/setDir(newdir)
	dir = newdir

/client/proc/handle_spam_prevention(var/message, var/mute_type, var/throttle = 0)
	if(throttle)
		if((last_message_time + throttle > world.time) && !check_rights(R_ADMIN, 0))
			var/wait_time = round(((last_message_time + throttle) - world.time) / 10, 1)
			to_chat(src, "<span class='danger'>You are sending messages to quickly. Please wait [wait_time] [wait_time == 1 ? "second" : "seconds"] before sending another message.</span>")
			return 1
		last_message_time = world.time
	if(config.automute_on && !check_rights(R_ADMIN, 0) && last_message == message)
		last_message_count++
		if(last_message_count >= SPAM_TRIGGER_AUTOMUTE)
			to_chat(src, "<span class='danger'>You have exceeded the spam filter limit for identical messages. An auto-mute was applied.</span>")
			cmd_admin_mute(mob, mute_type, 1)
			return 1
		if(last_message_count >= SPAM_TRIGGER_WARNING)
			to_chat(src, "<span class='danger'>You are nearing the spam filter limit for identical messages.</span>")
			return 0
	else
		last_message = message
		last_message_count = 0
		return 0

//This stops files larger than UPLOAD_LIMIT being sent from client to server via input(), client.Import() etc.
/client/AllowUpload(filename, filelength)
	if(filelength > UPLOAD_LIMIT)
		to_chat(src, "<font color='red'>Error: AllowUpload(): File Upload too large. Upload Limit: [UPLOAD_LIMIT/1024]KiB.</font>")
		return 0
/*	//Don't need this at the moment. But it's here if it's needed later.
	//Helps prevent multiple files being uploaded at once. Or right after eachother.
	var/time_to_wait = fileaccess_timer - world.time
	if(time_to_wait > 0)
		to_chat(src, "<font color='red'>Error: AllowUpload(): Spam prevention. Please wait [round(time_to_wait/10)] seconds.</font>")
		return 0
	fileaccess_timer = world.time + FTPDELAY	*/
	return 1


	///////////
	//CONNECT//
	///////////
/client/New(TopicData)
	var/tdata = TopicData //save this for later use
	chatOutput = new /datum/chatOutput(src) // Right off the bat.
	TopicData = null							//Prevent calls to client.Topic from connect

	if(connection != "seeker")					//Invalid connection type.
		return null
	if(byond_version < MIN_CLIENT_VERSION) // Too out of date to play at all. Unfortunately, we can't send them a message here.
		return null
	if(byond_build < config.minimum_client_build)
		alert(src, "You are using a byond build which is not supported by this server. Please use a build version of atleast [config.minimum_client_build].", "Incorrect build", "OK")
		del(src)
		return
	if(byond_version < SUGGESTED_CLIENT_VERSION) // Update is suggested, but not required.
		to_chat(src,"<span class='userdanger'>Your BYOND client (v: [byond_version]) is out of date. This can cause glitches. We highly suggest you download the latest client from http://www.byond.com/ before playing. </span>")

	if(IsGuestKey(key))
		alert(src,"This server doesn't allow guest accounts to play. Please go to http://www.byond.com/ and register for a key.","Guest","OK")
		del(src)
		return

	// Change the way they should download resources.
	if(config.resource_urls)
		preload_rsc = pick(config.resource_urls)
	else preload_rsc = 1 // If config.resource_urls is not set, preload like normal.

	to_chat(src, "<span class='warning'>If the title screen is black, resources are still downloading. Please be patient until the title screen appears.</span>")


	GLOB.clients += src
	GLOB.directory[ckey] = src

	//Admin Authorisation
	// Automatically makes localhost connection an admin
	if(!config.disable_localhost_admin)
		if(is_connecting_from_localhost())
			new /datum/admins("!LOCALHOST!", R_HOST, ckey) // Makes localhost rank
	holder = admin_datums[ckey]
	if(holder)
		GLOB.admins += src
		holder.owner = src

	//preferences datum - also holds some persistant data for the client (because we may as well keep these datums to a minimum)
	prefs = preferences_datums[ckey]
	if(!prefs)
		prefs = new /datum/preferences(src)
		preferences_datums[ckey] = prefs
	else
		prefs.parent = src
	prefs.last_ip = address				//these are gonna be used for banning
	prefs.last_id = computer_id			//these are gonna be used for banning
	if(world.byond_version >= 511 && byond_version >= 511 && prefs.clientfps)
		fps = prefs.clientfps

	spawn() // Goonchat does some non-instant checks in start()
		chatOutput.start()

	if( (world.address == address || !address) && !host )
		host = key
		world.update_status()

	if(holder)
		on_holder_add()
		add_admin_verbs()
		admin_memo_output("Show", 0, 1)
		if(custom_event_admin_msg && custom_event_admin_msg != "" && check_rights(R_EVENT))
			cmd_view_custom_event_info()

	// Forcibly enable hardware-accelerated graphics, as we need them for the lighting overlays.
	// (but turn them off first, since sometimes BYOND doesn't turn them on properly otherwise)
	spawn(5) // And wait a half-second, since it sounds like you can do this too fast.
		if(src)
			winset(src, null, "command=\".configure graphics-hwmode off\"")
			winset(src, null, "command=\".configure graphics-hwmode on\"")

	log_client_to_db(tdata)

	. = ..()	//calls mob.Login()

	if(ckey in clientmessages)
		for(var/message in clientmessages[ckey])
			to_chat(src, message)
		clientmessages.Remove(ckey)


	donator_check()
	check_ip_intel()
	send_resources()

	if(prefs.toggles & UI_DARKMODE) // activates dark mode if its flagged. -AA07
		if(establish_db_connection())
			activate_darkmode()

	if(prefs.lastchangelog != changelog_hash) //bolds the changelog button on the interface so we know there are updates. -CP
		if(establish_db_connection())
			to_chat(src, "<span class='info'>Changelog has changed since your last visit.</span>")
			update_changelog_button()

	if(prefs.toggles & DISABLE_KARMA) // activates if karma is disabled
		if(establish_db_connection())
			to_chat(src,"<span class='notice'>You have disabled karma gains.") // reminds those who have it disabled
	else
		if(establish_db_connection())
			to_chat(src,"<span class='notice'>You have enabled karma gains.")

	generate_clickcatcher()
	apply_clickcatcher()

	check_forum_link()

	if(custom_event_msg && custom_event_msg != "")
		to_chat(src, "<h1 class='alert'>Custom Event</h1>")
		to_chat(src, "<h2 class='alert'>A custom event is taking place. OOC Info:</h2>")
		to_chat(src, "<span class='alert'>[html_encode(custom_event_msg)]</span>")
		to_chat(src, "<br>")

	if(!winexists(src, "asset_cache_browser")) // The client is using a custom skin, tell them.
		to_chat(src, "<span class='warning'>Unable to access asset cache browser, if you are using a custom skin file, please allow DS to download the updated version, if you are not, then make a bug report. This is not a critical issue but can cause issues with resource downloading, as it is impossible to know when extra resources arrived to you.</span>")


	//This is down here because of the browse() calls in tooltip/New()
	if(!tooltips)
		tooltips = new /datum/tooltip(src)

	Master.UpdateTickRate()

/client/proc/is_connecting_from_localhost()
	var/localhost_addresses = list("127.0.0.1", "::1") // Adresses
	if(!isnull(address) && address in localhost_addresses)
		return TRUE
	return FALSE

//////////////
//DISCONNECT//
//////////////
/client/Del()
	if(holder)
		holder.owner = null
		GLOB.admins -= src
	GLOB.directory -= ckey
	GLOB.clients -= src
	Master.UpdateTickRate()
	return ..()


/client/proc/donator_check()
	if(IsGuestKey(key))
		return

	establish_db_connection()
	if(!dbcon.IsConnected())
		return

	if(check_rights(R_ADMIN, 0, mob)) // Yes, the mob is required, regardless of other examples in this file, it won't work otherwise
		donator_level = DONATOR_LEVEL_MAX
		donor_loadout_points()
		return

	//Donator stuff.
	var/DBQuery/query_donor_select = dbcon.NewQuery("SELECT ckey, tier, active FROM `[format_table_name("donators")]` WHERE ckey = '[ckey]'")
	query_donor_select.Execute()
	while(query_donor_select.NextRow())
		if(!text2num(query_donor_select.item[3]))
			// Inactive donator.
			donator_level = 0
			return
		donator_level = text2num(query_donor_select.item[2])
		donor_loadout_points()
		break

/client/proc/donor_loadout_points()
	if(donator_level > 0 && prefs)
		prefs.max_gear_slots = config.max_loadout_points + 5

/client/proc/log_client_to_db(connectiontopic)
	if(IsGuestKey(key))
		return


	establish_db_connection()
	if(!dbcon.IsConnected())
		return


	var/DBQuery/query = dbcon.NewQuery("SELECT id, datediff(Now(),firstseen) as age FROM [format_table_name("player")] WHERE ckey = '[ckey]'")
	query.Execute()
	var/sql_id = 0
	player_age = 0	// New players won't have an entry so knowing we have a connection we set this to zero to be updated if there is a record.
	while(query.NextRow())
		sql_id = query.item[1]
		player_age = text2num(query.item[2])
		break


	var/DBQuery/query_ip = dbcon.NewQuery("SELECT ckey FROM [format_table_name("player")] WHERE ip = '[address]'")
	query_ip.Execute()
	related_accounts_ip = list()
	while(query_ip.NextRow())
		if(ckey != query_ip.item[1])
			related_accounts_ip.Add("[query_ip.item[1]]")


	var/DBQuery/query_cid = dbcon.NewQuery("SELECT ckey FROM [format_table_name("player")] WHERE computerid = '[computer_id]'")
	query_cid.Execute()
	related_accounts_cid = list()
	while(query_cid.NextRow())
		if(ckey != query_cid.item[1])
			related_accounts_cid.Add("[query_cid.item[1]]")


	var/admin_rank = "Player"
	if(holder)
		admin_rank = holder.rank
	// Admins don't get slammed by this, I guess
	else
		if(check_randomizer(connectiontopic))
			return


	//Log all the alts
	if(related_accounts_cid.len)
		log_admin("[key_name(src)] alts:[jointext(related_accounts_cid, " - ")]")


	var/watchreason = check_watchlist(ckey)
	if(watchreason)
		message_admins("<font color='red'><B>Notice: </B></font><font color='blue'>[key_name_admin(src)] is on the watchlist and has just connected - Reason: [watchreason]</font>")
		send2irc(config.admin_notify_irc, "Watchlist - [key_name(src)] is on the watchlist and has just connected - Reason: [watchreason]")


	//Just the standard check to see if it's actually a number
	if(sql_id)
		if(istext(sql_id))
			sql_id = text2num(sql_id)
		if(!isnum(sql_id))
			return

	var/sql_ip = sanitizeSQL(address)
	var/sql_computerid = sanitizeSQL(computer_id)
	var/sql_admin_rank = sanitizeSQL(admin_rank)


	if(sql_id)
		//Player already identified previously, we need to just update the 'lastseen', 'ip' and 'computer_id' variables
		var/DBQuery/query_update = dbcon.NewQuery("UPDATE [format_table_name("player")] SET lastseen = Now(), ip = '[sql_ip]', computerid = '[sql_computerid]', lastadminrank = '[sql_admin_rank]' WHERE id = [sql_id]")
		if(!query_update.Execute())
			var/err = query_update.ErrorMsg()
			log_game("SQL ERROR during log_client_to_db (update). Error : \[[err]\]\n")
			message_admins("SQL ERROR during log_client_to_db (update). Error : \[[err]\]\n")
	else
		//New player!! Need to insert all the stuff
		var/DBQuery/query_insert = dbcon.NewQuery("INSERT INTO [format_table_name("player")] (id, ckey, firstseen, lastseen, ip, computerid, lastadminrank) VALUES (null, '[ckey]', Now(), Now(), '[sql_ip]', '[sql_computerid]', '[sql_admin_rank]')")
		if(!query_insert.Execute())
			var/err = query_insert.ErrorMsg()
			log_game("SQL ERROR during log_client_to_db (insert). Error : \[[err]\]\n")
			message_admins("SQL ERROR during log_client_to_db (insert). Error : \[[err]\]\n")

	//Logging player access
	var/serverip = "[world.internet_address]:[world.port]"
	var/DBQuery/query_accesslog = dbcon.NewQuery("INSERT INTO `[format_table_name("connection_log")]`(`id`,`datetime`,`serverip`,`ckey`,`ip`,`computerid`) VALUES(null,Now(),'[serverip]','[ckey]','[sql_ip]','[sql_computerid]');")
	query_accesslog.Execute()

/client/proc/check_ip_intel()
	set waitfor = 0 //we sleep when getting the intel, no need to hold up the client connection while we sleep
	if(config.ipintel_email)
		if(config.ipintel_maxplaytime && config.use_exp_tracking)
			var/living_hours = get_exp_type_num(EXP_TYPE_LIVING) / 60
			if(living_hours >= config.ipintel_maxplaytime)
				return

		if(is_connecting_from_localhost())
			log_debug("check_ip_intel: skip check for player [key_name_admin(src)] connecting from localhost.")
			return

		if(vpn_whitelist_check(ckey))
			log_debug("check_ip_intel: skip check for player [key_name_admin(src)] [address] on whitelist.")
			return

		var/datum/ipintel/res = get_ip_intel(address)
		ip_intel = res.intel
		verify_ip_intel()

/client/proc/verify_ip_intel()
	if(ip_intel >= config.ipintel_rating_bad)
		var/detailsurl = config.ipintel_detailsurl ? "(<a href='[config.ipintel_detailsurl][address]'>IP Info</a>)" : ""
		if(config.ipintel_whitelist)
			spawn(40) // This is necessary because without it, they won't see the message, and addtimer cannot be used because the timer system may not have initialized yet
				message_admins("<span class='adminnotice'>IPIntel: [key_name_admin(src)] on IP [address] was rejected. [detailsurl]</span>")
				var/blockmsg = "<B>Error: proxy/VPN detected. Proxy/VPN use is not allowed here. Deactivate it before you reconnect.</B>"
				if(config.banappeals)
					blockmsg += "\nIf you are not actually using a proxy/VPN, or have no choice but to use one, request whitelisting at: [config.banappeals]"
				to_chat(src, blockmsg)
				qdel(src)
		else
			message_admins("<span class='adminnotice'>IPIntel: [key_name_admin(src)] on IP [address] is likely to be using a Proxy/VPN. [detailsurl]</span>")


/client/proc/check_forum_link()
	if(config.forum_link_url && prefs && !prefs.fuid)
		to_chat(src, "<B>You do not have your forum account linked. <a href='?src=[UID()];link_forum_account=true'>LINK FORUM ACCOUNT</a></B>")

/client/proc/create_oauth_token()
	var/DBQuery/query_find_token = dbcon.NewQuery("SELECT token FROM [format_table_name("oauth_tokens")] WHERE ckey = '[ckey]' limit 1")
	if(!query_find_token.Execute())
		log_debug("create_oauth_token: failed db read")
		return
	if(query_find_token.NextRow())
		return query_find_token.item[1]
	var/tokenstr = md5("[ckey][rand()]")
	var/DBQuery/query_insert_token = dbcon.NewQuery("INSERT INTO [format_table_name("oauth_tokens")] (ckey, token) VALUES('[ckey]','[tokenstr]')")
	if(!query_insert_token.Execute())
		return
	return tokenstr

/client/proc/link_forum_account()
	if(IsGuestKey(key))
		to_chat(src, "Guest keys cannot be linked.")
		return
	if(prefs && prefs.fuid)
		to_chat(src, "Your forum account is already set.")
		return
	var/DBQuery/query_find_link = dbcon.NewQuery("SELECT fuid FROM [format_table_name("player")] WHERE ckey = '[ckey]' limit 1")
	if(!query_find_link.Execute())
		log_debug("link_forum_account: failed db read")
		return
	if(query_find_link.NextRow())
		if(query_find_link.item[1])
			to_chat(src, "Your forum account is already set. (" + query_find_link.item[1] + ")")
			return
	var/tokenid = create_oauth_token()
	if(!tokenid)
		to_chat(src, "link_forum_account: unable to create token")
		return
	var/url = "[config.forum_link_url][tokenid]"
	to_chat(src, {"Now opening a windows to verify your information with the forums. If the window does not load, please go to: <a href="[url]">[url]</a>."})
	src << link(url)
	return

#undef TOPIC_SPAM_DELAY
#undef UPLOAD_LIMIT
#undef MIN_CLIENT_VERSION

// Returns true if a randomizer is being used
/client/proc/check_randomizer(topic)
	. = FALSE
	if(connection != "seeker")					//Invalid connection type.
		return null
	topic = params2list(topic)
	if(!config.check_randomizer)
		return
	// Stash o' ckeys
	var/static/cidcheck = list()
	var/static/tokens = list()
	// Ckeys that failed the test, stored to send acceptance messages only for atoners
	var/static/cidcheck_failedckeys = list()
	var/static/cidcheck_spoofckeys = list()

	var/oldcid = cidcheck[ckey]

	if(!oldcid)
		var/DBQuery/query_cidcheck = dbcon.NewQuery("SELECT computerid FROM [format_table_name("player")] WHERE ckey = '[ckey]'")
		query_cidcheck.Execute()

		var/lastcid = computer_id
		if(query_cidcheck.NextRow())
			lastcid = query_cidcheck.item[1]

		if(computer_id != lastcid)
			// Their current CID does not match what the DB says - OFF WITH THEIR HEAD
			cidcheck[ckey] = computer_id

			// Disable the reconnect button to force a CID change
			winset(src, "reconnectbutton", "is-disable=true")

			tokens[ckey] = cid_check_reconnect()
			sleep(10) // Since browse is non-instant, and kinda async

			to_chat(src, "<pre class=\"system system\">you're a huge nerd. wakka wakka doodle doop nobody's ever gonna see this, the chat system shouldn't be online by this point</pre>")
			del(src)
			return TRUE
	else
		if (!topic || !topic["token"] || !tokens[ckey] || topic["token"] != tokens[ckey])
			if (!cidcheck_spoofckeys[ckey])
				message_admins("<span class='adminnotice'>[key_name(src)] appears to have attempted to spoof a cid randomizer check.</span>")
				cidcheck_spoofckeys[ckey] = TRUE
			cidcheck[ckey] = computer_id
			tokens[ckey] = cid_check_reconnect()

			sleep(10) //browse is queued, we don't want them to disconnect before getting the browse() command.
			del(src)
			return TRUE
		// We DO have their cached CID handy - compare it, now
		if(oldcid != computer_id)
			// Change detected, they are randomizing
			cidcheck -= ckey	// To allow them to try again after removing CID randomization

			to_chat(src, "<span class='userdanger'>Connection Error:</span>")
			to_chat(src, "<span class='danger'>Invalid ComputerID(spoofed). Please remove the ComputerID spoofer from your BYOND installation and try again.</span>")

			if(!cidcheck_failedckeys[ckey])
				message_admins("<span class='adminnotice'>[key_name(src)] has been detected as using a CID randomizer. Connection rejected.</span>")
				send2irc(config.cidrandomizer_irc, "[key_name(src)] has been detected as using a CID randomizer. Connection rejected.")
				cidcheck_failedckeys[ckey] = TRUE
				note_randomizer_user()

			log_adminwarn("Failed Login: [key] [computer_id] [address] - CID randomizer confirmed (oldcid: [oldcid])")

			del(src)
			return TRUE
		else
			// don't shoot, I'm innocent
			if(cidcheck_failedckeys[ckey])
				// Atonement
				message_admins("<span class='adminnotice'>[key_name_admin(src)] has been allowed to connect after showing they removed their cid randomizer</span>")
				send2irc(config.cidrandomizer_irc, "[key_name(src)] has been allowed to connect after showing they removed their cid randomizer.")
				cidcheck_failedckeys -= ckey
			if (cidcheck_spoofckeys[ckey])
				message_admins("<span class='adminnotice'>[key_name_admin(src)] has been allowed to connect after appearing to have attempted to spoof a cid randomizer check because it <i>appears</i> they aren't spoofing one this time</span>")
				cidcheck_spoofckeys -= ckey
			cidcheck -= ckey

/client/proc/note_randomizer_user()
	var/const/adminckey = "CID-Error"

	// Check for notes in the last day - only 1 note per 24 hours
	var/DBQuery/query_get_notes = dbcon.NewQuery("SELECT id from [format_table_name("notes")] WHERE ckey = '[ckey]' AND adminckey = '[adminckey]' AND timestamp + INTERVAL 1 DAY < NOW()")
	if(!query_get_notes.Execute())
		var/err = query_get_notes.ErrorMsg()
		log_game("SQL ERROR obtaining id from notes table. Error : \[[err]\]\n")
		return
	if(query_get_notes.NextRow())
		return

	// Only add a note if their most recent note isn't from the randomizer blocker, either
	query_get_notes = dbcon.NewQuery("SELECT adminckey FROM [format_table_name("notes")] WHERE ckey = '[ckey]' ORDER BY timestamp DESC LIMIT 1")
	if(!query_get_notes.Execute())
		var/err = query_get_notes.ErrorMsg()
		log_game("SQL ERROR obtaining adminckey from notes table. Error : \[[err]\]\n")
		return
	if(query_get_notes.NextRow())
		if(query_get_notes.item[1] == adminckey)
			return
	add_note(ckey, "Detected as using a cid randomizer.", null, adminckey, logged = 0)

/client/proc/cid_check_reconnect()
	var/token = md5("[rand(0,9999)][world.time][rand(0,9999)][ckey][rand(0,9999)][address][rand(0,9999)][computer_id][rand(0,9999)]")
	. = token
	log_adminwarn("Failed Login: [key] [computer_id] [address] - CID randomizer check")
	var/url = winget(src, null, "url")
	//special javascript to make them reconnect under a new window.
	src << browse("<a id='link' href='byond://[url]?token=[token]'>\
		byond://[url]?token=[token]\
	</a>\
	<script type='text/javascript'>\
		document.getElementById(\"link\").click();\
		window.location=\"byond://winset?command=.quit\"\
	</script>",
	"border=0;titlebar=0;size=1x1")
	to_chat(src, "<a href='byond://[url]?token=[token]'>You will be automatically taken to the game, if not, click here to be taken manually</a>. Except you can't, since the chat window doesn't exist yet.")

//checks if a client is afk
//3000 frames = 5 minutes
/client/proc/is_afk(duration=3000)
	if(inactivity > duration)	return inactivity
	return 0

//Send resources to the client.
/client/proc/send_resources()
	// Most assets are now handled through global_cache.dm
	getFiles(
		'html/search.js', // Used in various non-NanoUI HTML windows for search functionality
		'html/panels.css' // Used for styling certain panels, such as in the new player panel
	)
	spawn (10) //removing this spawn causes all clients to not get verbs.
		//Precache the client with all other assets slowly, so as to not block other browse() calls
		getFilesSlow(src, SSassets.preload, register_asset = FALSE)

//For debugging purposes
/client/proc/list_all_languages()
	for(var/L in GLOB.all_languages)
		var/datum/language/lang = GLOB.all_languages[L]
		var/message = "[lang.name] : [lang.type]"
		if(lang.flags & RESTRICTED)
			message += " (RESTRICTED)"
		to_chat(world, "[message]")

/client/proc/colour_transition(list/colour_to = null, time = 10) //Call this with no parameters to reset to default.
	animate(src, color = colour_to, time = time, easing = SINE_EASING)

/client/proc/on_varedit()
	var_edited = TRUE

/////////////////
// DARKMODE UI //
/////////////////
// IF YOU CHANGE ANYTHING IN ACTIVATE, MAKE SURE IT HAS A DEACTIVATE METHOD, -AA07
/client/proc/activate_darkmode()
	///// BUTTONS /////
	update_changelog_button()
	/* Rpane */
	winset(src, "rpane.textb", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "rpane.infob", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "rpane.wikib", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "rpane.forumb", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "rpane.rulesb", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "rpane.githubb", "background-color=#40628a;text-color=#FFFFFF")
	/* Mainwindow */
	winset(src, "mainwindow.saybutton", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "mainwindow.mebutton", "background-color=#40628a;text-color=#FFFFFF")
	winset(src, "mainwindow.hotkey_toggle", "background-color=#40628a;text-color=#FFFFFF")
	///// UI ELEMENTS /////
	/* Mainwindow */
	winset(src, "mainwindow", "background-color=#272727")
	winset(src, "mainwindow.mainvsplit", "background-color=#272727")
	winset(src, "mainwindow.tooltip", "background-color=#272727")
	/* Outputwindow */
	winset(src, "outputwindow.outputwindow", "background-color=#272727")
	winset(src, "outputwindow.browseroutput", "background-color=#272727")
	/* Rpane */
	winset(src, "rpane", "background-color=#272727")
	winset(src, "rpane.rpane", "background-color=#272727")
	winset(src, "rpane.rpanewindow", "background-color=#272727")
	/* Browserwindow */
	winset(src, "browserwindow", "background-color=#272727")
	winset(src, "browserwindow.browser", "background-color=#272727")
	/* Infowindow */
	winset(src, "infowindow", "background-color=#272727;text-color=#FFFFFF")
	winset(src, "infowindow.info", "background-color=#272727;text-color=#FFFFFF;highlight-color=#009900;tab-text-color=#FFFFFF;tab-background-color=#272727")
	// NOTIFY USER
	to_chat(src, "<span class='notice'>Darkmode Enabled</span>")

/client/proc/deactivate_darkmode()
	///// BUTTONS /////
	update_changelog_button()
	/* Rpane */
	winset(src, "rpane.textb", "background-color=none;text-color=#000000")
	winset(src, "rpane.infob", "background-color=none;text-color=#000000")
	winset(src, "rpane.wikib", "background-color=none;text-color=#000000")
	winset(src, "rpane.forumb", "background-color=none;text-color=#000000")
	winset(src, "rpane.rulesb", "background-color=none;text-color=#000000")
	winset(src, "rpane.githubb", "background-color=none;text-color=#000000")
	/* Mainwindow */
	winset(src, "mainwindow.saybutton", "background-color=none;text-color=#000000")
	winset(src, "mainwindow.mebutton", "background-color=none;text-color=#000000")
	winset(src, "mainwindow.hotkey_toggle", "background-color=none;text-color=#000000")
	///// UI ELEMENTS /////
	/* Mainwindow */
	winset(src, "mainwindow", "background-color=none")
	winset(src, "mainwindow.mainvsplit", "background-color=none")
	winset(src, "mainwindow.tooltip", "background-color=none")
	/* Outputwindow */
	winset(src, "outputwindow.outputwindow", "background-color=none")
	winset(src, "outputwindow.browseroutput", "background-color=none")
	/* Rpane */
	winset(src, "rpane", "background-color=none")
	winset(src, "rpane.rpane", "background-color=none")
	winset(src, "rpane.rpanewindow", "background-color=none")
	/* Browserwindow */
	winset(src, "browserwindow", "background-color=none")
	winset(src, "browserwindow.browser", "background-color=none")
	/* Infowindow */
	winset(src, "infowindow", "background-color=none;text-color=#000000")
	winset(src, "infowindow.info", "background-color=none;text-color=#000000;highlight-color=#007700;tab-text-color=#000000;tab-background-color=none")
	///// NOTIFY USER /////
	to_chat(src, "<span class='notice'>Darkmode Disabled</span>") // what a sick fuck

// Better changelog button handling
/client/proc/update_changelog_button()
	if(establish_db_connection())
		if(prefs.lastchangelog != changelog_hash)
			winset(src, "rpane.changelog", "background-color=#bb7700;text-color=#FFFFFF;font-style=bold")
		else
			if(prefs.toggles & UI_DARKMODE)
				winset(src, "rpane.changelog", "background-color=#40628a;text-color=#FFFFFF")
			else
				winset(src, "rpane.changelog", "background-color=none;text-color=#000000")
	else
		if(prefs.toggles & UI_DARKMODE)
			winset(src, "rpane.changelog", "background-color=#40628a;text-color=#FFFFFF")
		else
			winset(src, "rpane.changelog", "background-color=none;text-color=#000000")

/client/proc/generate_clickcatcher()
	if(!void)
		void = new()
		screen += void

/client/proc/apply_clickcatcher()
	generate_clickcatcher()
	var/list/actualview = getviewsize(view)
	void.UpdateGreed(actualview[1],actualview[2])

/client/proc/send_ssd_warning(mob/M)
	if(!config.ssd_warning)
		return FALSE
	if(ssd_warning_acknowledged)
		return FALSE
	if(M && M.player_logged < SSD_WARNING_TIMER)
		return FALSE
	to_chat(src, "Interacting with SSD players is against server rules unless you've ahelped first for permission. If you have, <a href='byond://?src=[UID()];ssdwarning=accepted'>confirm that</A> and proceed.")
	return TRUE

#undef SSD_WARNING_TIMER