iteration

auth.lua

@@ -0,0 +1,71 @@
+args = { ... }
+
+if args[1] == nil then
+    io.write("Usage: auth <action>\n")
+    return
+end
+
+local action = args[1]
+local server = "auth.layla.mc"
+
+function lns_lookup(hostname)
+    local data = {
+        ["action"] = "lookup",
+        ["hostname"] = hostname
+    }
+
+    rednet.send(lns_server_id, data)
+
+    while true do
+        id, msg = rednet.receive()
+        if id == lns_server_id then
+            if msg == nil then
+                return nil
+            else
+                return msg
+            end
+        end
+    end
+end
+
+
+auth_server_id = lns_lookup(server)
+
+if action == "login" then
+    io.write("Username: ")
+    local username = io.read()
+    io.write("Password: ")
+    local password = io.read("*")
+
+    local data = {
+        ["action"] = "login",
+        ["username"] = username,
+        ["password"] = password
+    }
+
+    rednet.send(auth_server_id, data)
+
+    while true do
+        id, msg = rednet.receive()
+        if id == auth_server_id then
+            if msg == "invalid request" then
+                io.write("Invalid request\n")
+                return
+            elseif msg == "user not found" then
+                io.write("User not found\n")
+                return
+            elseif msg == "invalid password" then
+                io.write("Invalid password\n")
+                return
+            else
+                token = msg
+                break
+            end
+        end
+    end
+
+    io.write("Logged in as " .. username .. "\n")
+    io.write("Token: " .. token .. "\n")
+    return
+end
+