Re: [HACKERS] Re: inet/cidr/bind

Thus spake Paul A Vixie
> > The network function will output it correctly, I think.
> >
> > inet_network_with_bits('192.5/16')     => '192.5/16'
> > inet_network_with_bits('192.5.5.1/16') => '192.5/16'
> > inet_network_with_bits('192.5/24')     => '192.5.0/16'
> >
> > Does this seem right?
>
> for networks, yes.

Hmm.  It _is_ the network function I was talking about.  The same inputs
whould give the following results.

Input           Network (with)   Network (without)   Host         Broadcast
192.5/16        192.5/16         192.5               192.5.0.0    192.5.255.255
192.5.5.1/16    192.5/16         192.5               192.5.0.0    192.5.255.255
192.5/24        192.5.0/16       192.5.0             192.5.0.0    192.5.0.255

Of course, you wouldn't expect the first and last to have the host function
applied to it.  They are probably in a field used to store networks.

> ok.  here's the current proposal.  any further comments?
>
> /*
>  * char *
>  * inet_cidr_ntop(af, src, bits, dst, size)
>  *      convert network address from network to presentation format.
>  *      generates "/CIDR" style result unless "bits" is -1.  "src"'s
>  *      size is determined from its "af".

And size is the available space in dst, right?  Perfect.

> /*
>  * int
>  * inet_cidr_pton(af, src, dst, *bits)
>  *      convert network address from presentation to network format.
>  *      accepts hex octets, hex strings, decimal octets, and /CIDR.
>  *      "dst" is assumed large enough for its "af".  "bits" is set to the
>  *      /CIDR prefix length if one was specified, or -1 otherwise.

This sounds bang-on to me.  How soon before your functions are in the
tree?  I'll start modifying my code based on this but I won't send it
in until I have tested it against your functions.

By George!  I think we've got it.  :-)

--
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