Re: [pcre-dev] Serialization format versioning

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著者: Giuseppe D'Angelo
日付:  
To: zatlas1
CC: pcre-dev, skunk
題目: Re: [pcre-dev] Serialization format versioning
On Fri, 22 Jun 2018 at 23:08, Ze'ev Atlas via Pcre-dev
<pcre-dev@???> wrote:
>
> PhilIt might be a good idea to add some id in the serialized object that stores the PCRE2 version and than, any subsequent version would be able to decide whether it is compatible or not.


Isn't this already being done?

In pcre2_serialize.c a magic number (to detect endianess?), the PCRE2
version and some other info (code unit size, pointer size, PCRE2_SIZE)
are saved in the serialized data, and checked back upon loading.

Orthogonal question: is that the amount of information sufficient to
protect against decoding of trusted data, but on the wrong OS / PCRE
installation / etc.?

Cheers,
--
Giuseppe D'Angelo