iteration

auth_server.lua

@@ -49,6 +49,10 @@ function hash(str)
     return hash
 end
 
+function log(str)
+    io.write("[" .. os.time() .. "] " .. str .. "\n")
+end
+
 load_data()
 math.randomseed(os.time())
 
@@ -76,21 +80,23 @@ while true do
         save_data()
 
         rednet.send(client_id, "ok")
+        log(request.username .. " registered")
     end
 
     if request.action == "login" then
         if request.username == nil or request.password == nil then
             rednet.send(client_id, "invalid request")
-        end
-
-        if data.users[request.username] == nil then
+            
+        else if data.users[request.username] == nil then
             rednet.send(client_id, "user not found")
-        end
 
-        if convert_password(request.password) == data.users[request.username].password then
+            log(request.username .. " failed log in attempt")
+        else if convert_password(request.password) == data.users[request.username].password then
             local token = generate_token(request.username)
 
             rednet.send(client_id, token)
+
+            log(request.username .. " logged in")
         else
             rednet.send(client_id, "invalid password")
         end
@@ -100,15 +106,17 @@ while true do
     if request.action == "token" then
         if request.token == nil then
             rednet.send(client_id, "invalid request")
-        end
+        else
 
-        for user, userdata in pairs(data.users) do
-            if userdata.token == request.token then
-                rednet.send(client_id, user)
+            for user, userdata in pairs(data.users) do
+                if userdata.token == request.token then
+                    rednet.send(client_id, user)
+                end
             end
-        end
 
-        rednet.send(client_id, "invalid token")
+            rednet.send(client_id, "invalid token")
+            log(request.username .. " failed token check")
+        end
     end
 
     if request.action == "profile" then
@@ -142,6 +150,7 @@ while true do
             save_data()
 
             rednet.send(client_id, "ok")
+            log(request.username .. " updated their profile")
         else
             rednet.send(client_id, "invalid token")
         end

lns.lua

@@ -0,0 +1,68 @@
+args = { ... }
+
+cache = {}
+
+allow_dynamic_lns_hosts = false
+
+function lns_lookup(hostname)
+    local data = {
+        ["action"] = "lookup",
+        ["hostname"] = hostname
+    }
+
+    local lns_server_id = 7
+    if allow_dynamic_lns_hosts then
+        lns_server_id = rednet.lookup("lns", lns_server)
+        if lns_server_id == nil then
+            io.write("LNS Server not found!\n")
+            return
+        end
+    end
+
+    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
+
+local action = args[1]
+if action == nil then
+    io.write("Usage: lns <action>\n")
+    return
+end
+
+if action == "lookup" then
+    local hostname = args[2]
+    if hostname == nil then
+        io.write("Usage: lns lookup <hostname>\n")
+        return
+    end
+
+    if cache[hostname] ~= nil then
+        io.write(cache[hostname])
+        return
+    end
+
+    local id = lns_lookup(hostname)
+    cache[hostname] = id
+    if id ~= nil then
+        io.write(id)
+    end
+
+else if action == "clear" then
+    local data = {
+        ["action"] = "reload"
+    }
+
+    lns_server_id = rednet.lookup("lns", lns_server)
+    rednet.send(lns_server_id, data)
+    print("Reloaded LNS Server")
+end