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Groups > comp.lang.python > #7137

Re: Validating string for FDQN

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On Mon, 06 Jun 2011 17:40:29 -0700, Eric wrote:

> Is there a library or regex that can determine if a string is a fqdn
> (fully qualified domain name)? I'm writing a script that needs to add
> a defined domain to the end of a hostname if it isn't already a fqdn
> and doesn't contain the defined domain.

Try socket.getfqdn() or socket.gethostbyname_ex().

With one exception[1], you can't reliably do it just by examining the
string; you have to ask the resolver.

[1] If a hostname ends with a dot, it's fully qualified.

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Thread

Validating string for FDQN Eric <eric.wong.t@gmail.com> - 2011-06-06 17:40 -0700
  Re: Validating string for FDQN harrismh777 <harrismh777@charter.net> - 2011-06-06 20:55 -0500
  Re: Validating string for FDQN Chris Angelico <rosuav@gmail.com> - 2011-06-07 12:50 +1000
  Re: Validating string for FDQN Philip Semanchuk <philip@semanchuk.com> - 2011-06-06 23:10 -0400
  Re: Validating string for FDQN Nobody <nobody@nowhere.com> - 2011-06-07 06:23 +0100
    Re: Validating string for FDQN Chris Angelico <rosuav@gmail.com> - 2011-06-07 15:52 +1000
      Re: Validating string for FDQN Chris Torek <nospam@torek.net> - 2011-06-07 06:20 +0000
      Re: Validating string for FDQN Nobody <nobody@nowhere.com> - 2011-06-07 21:46 +0100

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