asfpy/whoami.py (20 lines of code) (raw):

#!/usr/bin/env python # -*- coding: utf-8 -*- # Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import socket def whoami(): """Returns the FQDN of the box the program runs on""" try: # Get local hostname (what you see in the terminal) local_hostname = socket.gethostname() # Get all address info segments for the local host canonical_names = [ address[3] for address in socket.getaddrinfo(local_hostname, None, 0, socket.SOCK_DGRAM, 0, socket.AI_CANONNAME) if address[3] ] # For each canonical name, see if we find $local_hostname.something.tld, and if so, return that. if canonical_names: prefix = str(local_hostname) + "." for name in canonical_names: if name.startswith(prefix): return name # No match, just return the first occurrence. return canonical_names[0] except socket.error: pass # Fall back to socket.getfqdn return socket.getfqdn() if __name__ == "__main__": print(whoami())