# TLS server: general ops and certificate extractions
gnutls
#
# Very early (unsure when) GnuTLS prefers RSA auth by default.  Later, but before 3.6.x, prefers
# ECDSA but the client can be given a priority order to override that.  We're running the server
# with no priority string given (tls_require_ciphers) hence default, and with both types of
# server cert loaded (RSA first, though we don't document that as relevant and in testing it
# does not appear to matter).
#
# GnuTLS 3.6.5 appears to ignore the client priority ordering, always choosing ECDSA if both
# are permitted, if TLS1.3 is permitted, so we limit to TLS1.2.
#
exim -DSERVER=server -bd -oX PORT_D
****
# Have the client do RSA (but support ECDSA as well).  That should get us RSA on both older and newer GnuTLS.
client-gnutls -p NONE:+SIGN-RSA-SHA256:+SIGN-ECDSA-SHA512:+VERS-TLS1.2:+ECDHE-RSA:+DHE-RSA:+RSA:+CIPHER-ALL:+MAC-ALL:+COMP-NULL:+CURVE-ALL:+CTYPE-X509 127.0.0.1 PORT_D
??? 220
ehlo rhu.barb
??? 250-
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
starttls
??? 220
ehlo rhu.barb
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
mail from:<CALLER@test.ex>
??? 250
rcpt to:<CALLER@test.ex>
??? 250
DATA
??? 3
This is a test encrypted message.
.
??? 250
quit
??? 221
****
client-gnutls -p NONE:+SIGN-RSA-SHA256:+SIGN-ECDSA-SHA512:+VERS-TLS1.2:+ECDHE-RSA:+DHE-RSA:+RSA:+CIPHER-ALL:+MAC-ALL:+COMP-NULL:+CURVE-ALL:+CTYPE-X509 127.0.0.1 PORT_D
??? 220
ehlo rhu.barb
??? 250-
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
starttls
??? 220
helo test
??? 250
mail from:<"name with spaces"@test.ex>
??? 250
rcpt to:<CALLER@test.ex>
??? 250
DATA
??? 3
This is a test encrypted message.
.
??? 250
quit
??? 221
****
#
# Server asks for a client cert but client does not supply one
client-gnutls -p NONE:+SIGN-RSA-SHA256:+SIGN-ECDSA-SHA512:+VERS-TLS1.2:+ECDHE-RSA:+DHE-RSA:+RSA:+CIPHER-ALL:+MAC-ALL:+COMP-NULL:+CURVE-ALL:+CTYPE-X509 HOSTIPV4 PORT_D
??? 220
ehlo rhu.barb
??? 250-
??? 250-SIZE
??? 250-8BITMIME
??? 250-PIPELINING
??? 250-STARTTLS
??? 250 HELP
starttls
??? 220 TLS go ahead
nop
???*
****
# ensure sequence of log TLS error line
killdaemon
sleep 1
exim -DSERVER=server -bd -oX PORT_D
****
#
#
# Server asks for a client cert, and one is given which is verifiable by the server
client-gnutls -p NONE:+SIGN-RSA-SHA256:+SIGN-ECDSA-SHA512:+VERS-TLS1.2:+ECDHE-RSA:+DHE-RSA:+RSA:+CIPHER-ALL:+MAC-ALL:+COMP-NULL:+CURVE-ALL:+CTYPE-X509 HOSTIPV4 PORT_D DIR/aux-fixed/exim-ca/example.com/server2.example.com/server2.example.com.pem DIR/aux-fixed/exim-ca/example.com/server2.example.com/server2.example.com.unlocked.key
??? 220
ehlo rhu.barb
??? 250-
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
starttls
??? 220
helo test
??? 250
mail from:<CALLER@test.ex>
??? 250
rcpt to:<CALLER@test.ex>
??? 250
DATA
??? 3
This is a test encrypted message from a verified host.
.
??? 250
quit
??? 221
****
#
#
# A client that only talks RSA.
#
# We have to specify the key-exchange as well as the authentication, otherwise,
# the GnuTLS server side being foolish - it picks an ECDSA cipher-suite and then can't use it :(
# Possibly fixed in 3.6.x ? 
client-gnutls -p NONE:+SIGN-RSA-SHA256:+VERS-TLS1.2:+ECDHE-RSA:+DHE-RSA:+RSA:+CIPHER-ALL:+MAC-ALL:+COMP-NULL:+CURVE-ALL:+CTYPE-X509 127.0.0.1 PORT_D
??? 220
ehlo rhu.barb
??? 250-
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
starttls
??? 220
helo test
??? 250
mail from:<CALLER@test.ex>
??? 250
rcpt to:<CALLER@test.ex>
??? 250
DATA
??? 3
This is a test encrypted message.
It should be sent under the RSA server cert and with an RSA cipher.
.
??? 250
quit
??? 221
****
#
#
# Make ECDSA authentication preferred (Older GnuTLS prefers RSA, it seems, Newer, ECDSA).
client-gnutls -p NONE:+SIGN-ECDSA-SHA512:+VERS-TLS1.2:+KX-ALL:+CIPHER-ALL:+MAC-ALL:+COMP-NULL:+CURVE-ALL:+CTYPE-X509 127.0.0.1 PORT_D
??? 220
ehlo rhu.barb
??? 250-
??? 250-
??? 250-
??? 250-
??? 250-
??? 250
starttls
??? 220
helo test
??? 250
mail from:<CALLER@test.ex>
??? 250
rcpt to:<CALLER@test.ex>
??? 250
DATA
??? 3
This is a test encrypted message.
It should be sent under the EC server cert and with an ECDSA cipher.
.
??? 250
quit
??? 221
****
killdaemon
sleep 1
# clear out the queue
exim -qf
****
sleep 1
#
# STARTTLS used when not advertised
exim -bh 10.0.0.1
starttls
quit
****