1 files changed, 102 insertions, 2 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
 }