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Date: Sat, 25 Jan 2014 16:42:05 +0900
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To: Andrey Andreev <narf@devilix.net>
Cc: "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=089e0115fb12d2e2ec04f0c69ecc
Subject: Re: [PHP-DEV] Session IP address matching
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

--089e0115fb12d2e2ec04f0c69ecc
Content-Type: text/plain; charset=UTF-8

Hi all,

On Sat, Jan 25, 2014 at 4:32 PM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:

> On Sat, Jan 25, 2014 at 12:09 PM, Andrey Andreev <narf@devilix.net> wrote:
>
>> Still, that is not optimal. The desired effect is to call the session file
>> something like:
>>
>>     <session.name>_<REMOTE_ADDR(hash)>_<session_id>
>>
>> I can't think of a way of making that happen, so I guess a work-around
>> would be to do:
>>
>
> I've just written session_create_id(string $prefix) today.
> You can do that easily and securely with session_create_id().
> It would be in 5.6.
>
> You may check easily with user script whatever prefix means.
>
> NOTE: No one should not expose sensitive data in prefix!
>

If anyone would like to prefix by IP address, store it like

session_create_id(sha1($secret.$IP_ADDR).'-');

Regards,

--
Yasuo Ohgaki
yohgaki@ohgaki.net

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