On Tuesday, October 21, 2014 07:28:13 PM Stephen Harris wrote:
> On Tue, Oct 21, 2014 at 04:17:25PM -0700, lists@xxxxxxxxxxxxxxxxxx wrote:
> > I've already confirmed for example, that using openssl s_client as you
> > mention above doesn't actually check the certs, just lists them.
>
> Actually it does check them as well.
>
> e.g.
> openssl s_client -connect localhost:443 < /dev/null > /dev/null
> depth=0
> /C=--/ST=SomeState/L=SomeCity/O=SomeOrganization/OU=SomeOrganizationalUnit/
> CN=a.example.com/emailAddress=root@xxxxxxxxxxxxx verify error:num=18:self
> signed certificate
> verify return:1
> depth=0
> /C=--/ST=SomeState/L=SomeCity/O=SomeOrganization/OU=SomeOrganizationalUnit/
> CN=a.example.com/emailAddress=root@xxxxxxxxxxxxx verify
> error:num=10:certificate has expired
> notAfter=Aug 9 23:55:39 2014 GMT
> verify return:1
> depth=0
> /C=--/ST=SomeState/L=SomeCity/O=SomeOrganization/OU=SomeOrganizationalUnit/
> CN=a.example.com/emailAddress=root@xxxxxxxxxxxxx notAfter=Aug 9 23:55:39
> 2014 GMT
> verify return:1
> DONE
>
> Notice the "verify error" lines; it's both self-signed _and_ expired.
>
> In chained certs it'll check each of the chains.
>
> e.g.
> openssl s_client -connect www.google.com:443 < /dev/null > /dev/null
> CONNECTED(00000003)
> depth=3 /C=US/O=Equifax/OU=Equifax Secure Certificate Authority
> verify return:1
> depth=2 /C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
> verify return:1
> depth=1 /C=US/O=Google Inc/CN=Google Internet Authority G2
> verify return:1
> depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google.com
> verify return:1
> ---
> Certificate chain
> 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google.com
> i:/C=US/O=Google Inc/CN=Google Internet Authority G2
> 1 s:/C=US/O=Google Inc/CN=Google Internet Authority G2
> i:/C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
> 2 s:/C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
> i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
>
> You can do a _LOT_ with the openssl command line (e.g. show all the
> intermediate certs in detail with -showcerts). 'man s_client'
>
> If you have a server with a broken intermediate chain then run the command
> and see what it returns.
I ended up discovering that curl recently added the option --resolve that
allows me to do what I need. I had to download a statically compiled version
and install in /usr/local to get it working on EL6.
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