Re: [PATCH] Add `verify-system` sslmode to use system CA pool for server cert

On Mon, Oct 4, 2021 at 9:14 PM Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> On Tue, Sep 28, 2021 at 02:54:39AM -0700, thomas(at)habets(dot)se wrote:
> > And you say for complex setups. Fair enough. But currently I'd say the
> > default is wrong, and what should be default is not configurable.
>
> Agreed, I think this needs much more discussion and documentation.

I'd like to try to get this conversation started again. To pique
interest I've attached a new version of 0001, which implements
`sslrootcert=system` instead as suggested upthread. In 0002 I went
further and switched the default sslmode to `verify-full` when using
the system CA roots, because I feel pretty strongly that anyone
interested in using public CA systems is also interested in verifying
hostnames. (Otherwise, why make the switch?)

Notes:
- 0001, like Thomas' original patch, uses
SSL_CTX_set_default_verify_paths(). This will load both a default file
and a default directory. This is probably what most people want if
they're using the system roots -- just give me whatever the local
system wants me to use! -- but sslrootcert currently deals with files
only, I think. Is that a problem?
- The implementation in 0002 goes all the way down to
conninfo_add_defaults(). Maybe this is overly complex. Should I just
make sslmode a derived option, via connectOptions2()?

Thanks,
--Jacob