From 44219730e45fd26963883afb6cf92205002ed1d8 Mon Sep 17 00:00:00 2001
From: Autumn <git@autumnfo.rest>
Date: Sun, 17 May 2026 19:04:13 +0100
Subject: [main] added basic dns lookup

---
 src/actions.lua    | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 src/help.lua       |  16 ++++++++-
 src/pawsd/send.lua |   3 ++
 3 files changed, 120 insertions(+), 3 deletions(-)

diff --git a/src/actions.lua b/src/actions.lua
index 007d978..370f138 100644
--- a/src/actions.lua
+++ b/src/actions.lua
@@ -56,7 +56,7 @@ function fetchservice ()
     -- check length
     if not (#arg == 3) then
 
-        help.fetchservice ()
+        help.fetchservice()
         return
 
     end
@@ -99,9 +99,109 @@ function fetchservice ()
 
 end
 
+-- misc: dns
+function dns ()
+
+    -- check length
+    if not (#arg == 3) then
+
+        help.dns()
+        return
+
+    end
+
+    -- get server name
+    local server = Servers[arg[2]]
+
+    if not server then
+
+        print("\nE> Error: server not found.\n")
+        return
+
+    end
+
+    -- repeat requests till hostname found or no more services
+    local looking = true
+    local foundrecord
+    local index = 0
+
+    while looking do
+
+        -- convert number to hex
+        local hexIndex = string.format("%04x", index)
+
+        -- send request
+        local request = PawSD.Verbs.FETCH_SERVICE .. server.keyalg .. "0020" .. server.key .. hexIndex
+        local response = send(server, request)
+
+        -- check response
+        local valid = pawsd.response.validate(response)
+
+        if not valid then
+
+            looking = false
+            return
+
+        end
+
+        -- get records
+        local records = pawsd.service.records.all(response)
+
+        -- check each tag & record
+        for recordindex = 1, #records, 1 do
+            for recordtagindex = 1, #records[recordindex], 1 do
+
+                -- get tag
+                local tag = records[recordindex][recordtagindex]
+
+                -- check if "dns-style hostname"
+                if tag.types.high == "EDCC1A0A8817F0F6" and tag.types.low == "E8ED44A7A4760A51" then
+
+                    -- strip index unicode char & compare to wanted hostname
+                    local check = string.fromhex(string.sub(tag.value, 1, -3)) == arg[3]
+
+                    if check then
+
+                        looking = false
+                        foundrecord = records[recordindex]
+
+                    end
+                end
+            end
+        end
+
+        index = index + 1
+
+    end
+
+    -- if hostname has been found
+    if foundrecord then
+        for tagindex = 1, #foundrecord, 1 do
+
+            local tag = foundrecord[tagindex]
+
+            -- get ipv4 address
+            if tag.types.low == "DF4E01093265D87B" then
+
+                -- build address
+                local address = {
+                    tonumber(string.sub(tag.value, 1, 2), 16),
+                    tonumber(string.sub(tag.value, 3, 4), 16),
+                    tonumber(string.sub(tag.value, 5, 6), 16),
+                    tonumber(string.sub(tag.value, 7, 8), 16)
+                }
+
+                print("I> " .. table.concat(address, "."))
+            end
+        end
+    end
+end
+
 -- return
 return {
     echo = echo,
 
-    fetchservice = fetchservice
+    fetchservice = fetchservice,
+
+    dns = dns
 }
diff --git a/src/help.lua b/src/help.lua
index 7f0c82d..cf6b25e 100644
--- a/src/help.lua
+++ b/src/help.lua
@@ -14,6 +14,9 @@ function main ()
     print("---*> 0000 - echo")
     print("\n---*> 0001 - fetchservice\n")
 
+    print("\n*> Other Utils:")
+    print("---*> dns")
+
 end
 
 -- 0000: echo
@@ -36,11 +39,22 @@ function fetchservice ()
 
 end
 
+-- misc: look up dns
+function dns ()
+
+    print("\nDNS Lookup - Look up the IP address associated with a hostname.")
+
+    print("\n*> Usage:")
+    print("\n   lua selenepaw.lua dns <server name> <hostname>\n")
+end
+
 -- return
 return {
     main = main,
     
     echo = echo,
 
-    fetchservice = fetchservice
+    fetchservice = fetchservice,
+
+    dns = dns
 }
diff --git a/src/pawsd/send.lua b/src/pawsd/send.lua
index 156664d..3492ed1 100644
--- a/src/pawsd/send.lua
+++ b/src/pawsd/send.lua
@@ -35,6 +35,9 @@ function send (server, data)
 
     end
 
+    -- close client
+    client:close()
+
     -- return response
     return response
 
-- 
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