Adds external auth (#6380)

code/modules/world_api/commands/api_helpers.dm

@@ -12,7 +12,7 @@
 	var/versionstring = null
 	//The Version Number follows SemVer http://semver.org/
 	version["major"] = 2 //Major Version Number --> Increment when implementing breaking changes
-	version["minor"] = 6 //Minor Version Number --> Increment when adding features
+	version["minor"] = 7 //Minor Version Number --> Increment when adding features
 	version["patch"] = 0 //Patchlevel --> Increment when fixing bugs
 
 	versionstring = "[version["major"]].[version["minor"]].[version["patch"]]"

code/modules/world_api/commands/misc.dm

@@ -170,3 +170,58 @@
 	response = "Poll data fetched"
 	data = poll_data
 	return TRUE
+
+// Authenticates client from external system
+/datum/topic_command/auth_client
+	name = "auth_client"
+	description = "Authenticates client from external system."
+	params = list(
+		"key" = list("name"="key","desc"="Verified key to be set for client.","type"="str","req"=1),
+		"clienttoken" = list("name"="clienttoken","desc"="Token for identifying the unique client.","type"="str","req"=1),
+	)
+
+/datum/topic_command/auth_client/run_command(queryparams)
+	if(!(queryparams["clienttoken"] in unauthed))
+		statuscode = 404
+		response = "Client with such token is not found."
+		return TRUE
+
+	var/mob/abstract/unauthed/una = unauthed[queryparams["clienttoken"]]
+	if(!istype(una) || !una.client)
+		statuscode = 500
+		response = "Somethnig went horribly wrong."
+		return TRUE
+
+	if(!config.external_auth)
+		statuscode = 500
+		response = "External auth is disalowed."
+		del(una.client)
+		del(una)
+		return TRUE
+
+	var/client/cl = directory[ckey(queryparams["key"])]
+	if(cl)
+		to_chat(cl, "Another connection has been made using your login key. This session has been terminated.")
+		del(cl)
+	
+	statuscode = 200
+	response = "Client has been authenticated sucessfully."
+	una.ClientLogin(queryparams["key"])
+
+// Updates external auth state
+/datum/topic_command/set_extenal_auth
+	name = "set_extenal_auth"
+	description = "Enables or disables external authentication."
+	params = list(
+		"state" = list("name"="state","desc"="State to witch option should be updated. If not provided option is toggled.","type"="int","req"=0)
+	)
+
+/datum/topic_command/set_extenal_auth/run_command(queryparams)
+	if(queryparams["state"] == null)
+		config.external_auth = !config.external_auth
+	else
+		config.external_auth = queryparams["state"]
+	
+	statuscode = 200
+	response = "External authentication state has been updated sucessfully."
+	data = config.external_auth