Re: passwordcheck: Log cracklib diagnostics

On Tue, 2020-08-25 at 13:48 +0200, Daniel Gustafsson wrote:
> > On 25 Aug 2020, at 12:20, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> wrote:
> >
> > A user tried to use the cracklib build-time option of the passwordcheck module. This failed, as it turned out because there was no dictionary installed in the right place, but the error was not
> > properly reported, because the existing code just throws away the error message from cracklib. Attached is a patch that changes this by logging any error message returned from the cracklib call.
>
> +1 on this, it's also in line with the example documentation from cracklib.
> The returned error is potentially a bit misleading now, as it might say claim
> that a strong password is easily cracked if the dictionary fails load. Given
> that there is no way to distinguish between the class of returned errors it's
> hard to see how we can do better though.
>
> While poking at this, we might as well update the docs to point to the right
> URL for CrackLib as it moved from Sourceforge five years ago. The attached
> diff fixes that.

+1 on both patches.

Yours,
Laurenz Albe