Update LeakIX source to new API

- New subdomain API
- API key is optionnal

resources/scripts/api/leakix.ads

@@ -11,36 +11,22 @@ function start()
     set_rate_limit(2)
 end
 
-function check()
-    local c
-    local cfg = datasrc_config()
-    if (cfg ~= nil) then
-        c = cfg.credentials
-    end
-
-    if (c ~= nil and c.key ~= nil and c.key ~= "") then
-        return true
-    end
-    return false
-end
-
 function vertical(ctx, domain)
     local c
     local cfg = datasrc_config()
+    local headers = {
+      ['Accept']="application/json",
+    }
     if (cfg ~= nil) then
         c = cfg.credentials
     end
-
-    if (c == nil or c.key == nil or c.key == "") then
-        return
+    if (c ~= nil and c.key ~= nil and c.key ~= "") then
+       headers['api-key'] = c.key
     end
 
     local resp, err = request(ctx, {
         ['url']=vert_url(domain),
-        ['header']={
-            ['api-key']=c.key,
-            ['Accept']="application/json",
-        },
+        ['header']=headers,
     })
     if (err ~= nil and err ~= "") then
         log(ctx, "vertical request to service failed: " .. err)
@@ -51,20 +37,16 @@ function vertical(ctx, domain)
     end
 
     local d = json.decode(resp.body)
-    if (d == nil) then
-        log(ctx, "failed to decode the JSON response")
-        return
-    elseif (d.nodes == nil or #(d.nodes) == 0) then
+    if (d == nil or #(d) == 0) then
         return
     end
-
-    for _, node in pairs(d.nodes) do
-        if (node ~= nil and node.fqdn ~= nil and node.fqdn ~= "") then
-            new_name(ctx, node.fqdn)
+    for _, node in pairs(d) do
+        if (node ~= nil and node.subdomain ~= nil and node.subdomain ~= "") then
+            new_name(ctx, node.subdomain)
         end
     end
 end
 
 function vert_url(domain)
-    return "https://leakix.net/api/graph/hostname/" .. domain .. "?v%5B%5D=hostname&d=auto&l=1..5&f=3d-force"
+    return "https://leakix.net/api/subdomains/" .. domain
 end