[Xastir-dev] Switching string length discussion to here

[Curt Mills]

Nope. I remember considering those before after a bunch of research. I
think they're on some BSD-derived systems but they're not on Linux.

On Sun, Dec 19, 2021 at 2:33 PM Tom Russo <russo at bogodyn.org> wrote:
>
> On Sun, Dec 19, 2021 at 03:27:07PM -0700, we recorded a bogon-computron collision of the <russo at bogodyn.org> flavor, containing:
> > On Sun, Dec 19, 2021 at 03:25:28PM -0700, we recorded a bogon-computron collision of the <russo at bogodyn.org> flavor, containing:
> > > On Sun, Dec 19, 2021 at 03:12:50PM -0600, we recorded a bogon-computron collision of the <godfreja at gmail.com> flavor, containing:
> > > > There is also strlcat.
> > >
> > > Are these in the C standard, snprintf?
> >
> > "unlike snprintf"
>
> It appears that they are not standard in either ISO or POSIX standards.
>
> From https://stackoverflow.com/questions/2114896/why-are-strlcpy-and-strlcat-considered-insecure
>
>   strlcpy() and strlcat() are not standard, neither ISO C nor POSIX. So,
>   their use in portable programs is impossible. In fact, strlcat() has
>   two different variants: the Solaris implementation is different from
>   the others for edge cases involving length 0. This makes it even less useful
>   than otherwise.
>
> From the same discussion:
>
>   This API has been adopted by most modern operating systems and many
>   standalone software packages, including OpenBSD (where it originated),
>   Sun Solaris, FreeBSD, NetBSD, the Linux kernel, rsync and the GNOME project.
>   The notable exception is the GNU standard C library, glibc [12], whose
>   maintainer steadfastly refuses to include these improved APIs, labelling
>   them "horribly inefficient BSD crap" [4], despite prior evidence that they
>   are faster is most cases than the APIs they replace [13].
>
>   That is why they are not available in glibc, but it is not true that they
>   are not available on Linux. They are available on Linux in libbsd:
>
>     https://libbsd.freedesktop.org/
>
>
> --
> Tom Russo    KM5VY
> Tijeras, NM
>
>  echo "prpv_a'rfg_cnf_har_cvcr" | sed -e 's/_/ /g' | tr [a-m][n-z] [n-z][a-m]
>
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-- 
Curt, WE7U        http://xastir.org        http://www.sarguydigital.com