Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:109069
MIME-Version: 1.0
References: <CAKtGGAuxkoS9vmKqSfpBi2=mpo2L-w8BXv9idTUaOCiTTtq8Gg@mail.gmail.com>
 <DAF0E4A2-736A-4176-8DCD-CD78E1385040@benramsey.com>
In-Reply-To: <DAF0E4A2-736A-4176-8DCD-CD78E1385040@benramsey.com>
Date: Mon, 16 Mar 2020 16:22:14 +0000
Message-ID: <CAKtGGAuRDZUbyDdpaGd6h9SU5yNW3VbuJX=b6SH86Wrv-msoWA@mail.gmail.com>
To: Ben Ramsey <ben@benramsey.com>
Cc: PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="00000000000012d80c05a0fb3b1a"
Subject: Re: [PHP-DEV] [DISCUSSION] Native UUID support in PHP
From: cdtreeks@gmail.com (Aran Reeks)

--00000000000012d80c05a0fb3b1a
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hi Ben,

Thanks for the feedback, I wasn't aware of net_get_interfaces, but that's
really helpful and agree that post your patch, implementing a
get_network_mac_addr() function (or similar name) would be amazing.

Many thanks
Aran


On Mon, 16 Mar 2020 at 16:16, Ben Ramsey <ben@benramsey.com> wrote:

> > On Mar 16, 2020, at 11:06, Aran Reeks <cdtreeks@gmail.com> wrote:
> >
> > Hi Internals,
> >
> > I'd like to open up a discussion around the implementation of a new
> > function within PHP for generating a UUID.
> >
> > Whilst there are libraries out there already for PHP which can generate=
 a
> > UUID, all of those libraries have the possibility to generate IDs that
> > *could* have a collision.
> >
> > The specification for UUID versions 1 and 2 allow for collision-free ID
> > generation by incorporating the unique MAC addresses from network cards=
 -
> > something which can't be accessed from PHP code at present.
> >
> > I can see two possible methods to enable this;
> >
> >   - New function added to PHP which exposes the MAC address (allowing
> >   external implementations for UUIDs, as well as other possible purpose=
s
> a
> >   MAC address could be used).
> >
> >   - A new PHP function which introduced a uuid() function which will
> >   generate and return version-compliant UUIDs.
> >
> >   - Both of the above.
> >
> > Thoughts and feedback welcome to kickstart conversations and if there's=
 a
> > positive consensus, I'd like to put forward an RFC for this to be
> > introduced in PHP 8.
> >
>
>
> While undocumented, PHP has the method `net_get_interfaces()` (since PHP
> 7.3.0).  It uses `getifaddrs()` on Linux and `GetAdaptersAddresses()` on
> Windows to create an array of network interface addresses.
>
> See
> https://github.com/php/php-src/commit/7ca5a7d84ebdc1b97f49cb460f200db093b=
96d9d
>
> Right now, the address is only added when it is an IPv4 or IPv6 address.
> It just needs to be modified to look for the correct =E2=80=9Cfamily=E2=
=80=9D and set that
> as the =E2=80=9Cmac=E2=80=9D array value for the interface.
>
> I=E2=80=99m currently working on a patch for this, so this might help wit=
h one
> aspect of your proposal.
>
> Cheers,
> Ben
>
>

--00000000000012d80c05a0fb3b1a--