Re: [inbox] Re: RE: Linux (in)security

[Brett Hutley <brett () hutley net>]

Ted Unangst wrote:

> On Mon, 27 Oct 2003, Brett Hutley wrote:
>
>
> > char buf[10];
> > const char *str1 = "OVER";
> > const char *str2 = "FLOW!!!!!";
> > sprintf(buf, "%s%s", str1, str2);
> >
> > Admittedly a contrived example. The best way to handle this type of
> > stuff is to provide "safe" functions - like a sprintfn() that takes the
> > maximum size of the buffer to write into as an argument. This function
> > is reasonably tricky to write however. Consider the following example:
>
>
> erm, snprintf?  the reasonably tricky to implement part is kinda true,
> there are/were many implementations which didn't do the right thing, but i
> think that's improved.

Sorry, yes, snprintf() *doh*

--
Brett Hutley [MAppFin,CISSP,SANS GCIH]
mailto:brett () hutley net
http://hutley.net/brett


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