[Libreoffice] [PATCH] Replace command domainname by getdomainname() on Unix

[Noel Grandin]

OpenGrok says that:

GetDomainName is only used by
  GetYPDomainName
in the same file

which in turn is only used by
 const rtl::OUString& SubstitutePathVariables_Impl::GetYPDomainName()
in
  /core/framework/source/services/substitutepathvars.cxx

which in turn is only used by
  bool SubstitutePathVariables_Impl::FilterRuleSet( const
SubstituteRuleVector& aRuleSet, SubstituteRule& aActiveRule )
in the same file.

and that particular codepath in that method is only referenced when the
  enum EnvironmentType {
      ET_YPDOMAIN
constant is used.

which in turn is not used anywhere in the LO codebase.



On Sun, Nov 13, 2011 at 12:06, Tor Lillqvist <tml at iki.fi> wrote:
> Seems that the original code was also broken of course, forking and
> execing /bin/domainname is indeed a bit stupid, and the domainname
> command is also specified (to the extent it is "specified" at all) to
> return the NIS domain name.
>
> But honestly, how many of the LibreOffice installations on Unix even
> have the NIS domain name set? At least in my openSUSE 11.4 with fairly
> default settings, the domainname command prints nothing. Neither does
> it in my Mac OS X 10.7.2.
>
> I guess the sane thing to do here is to 1) unravel the stack of static
> functions in sal/osl/unx/socket.c and find out what public functions
> they actually are used in; 2) if possible drop code that is not
> needed; 3) and finally ponder what will break, if anything, if we just
> don't bother with the NIS domain name. 4) If really necessary, then do
> it right, as Lionel said:
>
>> The portable and strictly correct way seems to be to do a
>> DNS query on the result of gethostname() (gethostbyname or getaddrinfo
>> with AI_CANONNAME).
>
> But in general we should avoid potentially pointless DNS calls. Let's
> not risk having to wait for DNS timeouts in badly configured
> situations. I think there has been bug reports of OOo and/or LO being
> very slow to start in some cases, where the root cause has been some
> DNS call timing out?
>
> LibreOffice is an "office suite", not some Internet service software,
> why would it need to know the exact canonical official hostname of the
> machine it is running on (or some other machine)? Especially as many
> "home" end-user machines certainly don't have any public official DNS
> name anyway, at least not one the machine itself would know, but some
> cable-modem-42651e7a3c.isp.example.com.
>
> --tml
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