Added logic to report dropbox sharing information

scripts/lua/modules/dropbox_utils.lua

@@ -0,0 +1,54 @@
+--
+-- (C) 2019 - ntop.org
+--
+
+local dropbox = {}
+
+function dropbox.getNamespaces()
+   local db = interface.dumpDropboxHosts()
+   local namespaces = {}
+   
+   for host,ns in pairs(db) do
+      -- print tprint(db)
+      -- tprint(ns)
+      
+      for k,v in pairs(ns.namespaces) do
+	 -- print(host.." "..k.."<br>\n")
+	 if(namespaces[k] == nil) then
+	    namespaces[k] = {}
+	 end
+	 
+	 table.insert(namespaces[k], host)
+      end
+   end
+
+   return namespaces
+end
+
+function dropbox.getHostNamespaces(ipaddr)
+   local ns = dropbox.getNamespaces()
+   local ret = {}
+   
+   for _,hosts in pairs(ns) do
+      local found = false
+      
+      for a,b in pairs(hosts) do
+	 if(b == ipaddr) then
+	    found = true
+	 end
+      end
+
+      if(found == true) then
+	 for _,c in pairs(hosts) do
+	    if(c ~= ipaddr) then
+	       ret[c] = true
+	    end
+	 end
+      end
+   end
+   
+   return ret
+end
+
+return dropbox
+