Test suite: add new tests for SSL/TLS.

SSL connections are accepted on TCP port 10993.  Also, fix STARTTLS
directive, broken since fba1c36…

3 files changed, 83 insertions, 0 deletions

diff --git a/tests/tls-verify-peer/interimap.remote b/tests/tls-verify-peer/interimap.remote
new file mode 100644
index 0000000..b02fcd0
--- /dev/null
+++ b/tests/tls-verify-peer/interimap.remote
@@ -0,0 +1,2 @@
+host = ::1
+port = 10993
diff --git a/tests/tls-verify-peer/remote.conf b/tests/tls-verify-peer/remote.conf
new file mode 120000
index 0000000..6029749
--- /dev/null
+++ b/tests/tls-verify-peer/remote.conf
@@ -0,0 +1 @@
+../tls/remote.conf
\ No newline at end of file
diff --git a/tests/tls-verify-peer/t b/tests/tls-verify-peer/t
new file mode 100644
index 0000000..d84328a
--- /dev/null
+++ b/tests/tls-verify-peer/t
@@ -0,0 +1,80 @@
+CERT=~/.dovecot/conf.d/dovecot.pem
+
+unverified_peer() {
+    ! interimap --debug || error
+
+    grep -Fx "remote: ERROR: Can't initiate TLS/SSL handshake" <"$STDERR" || error
+    sed -nr "s/remote: \[[0-9]+\] (preverify=[0-9]+)$/\1/p" <"$STDERR" >"$TMPDIR/preverify"
+    [ -s "$TMPDIR/preverify" ] || error
+    ! grep -Fvx "preverify=0" <"$TMPDIR/preverify" || error
+
+    # make sure we didn't send any credentials
+    ! grep -E "^remote: C: .* (AUTHENTICATE|LOGIN) " <"$STDERR" || error
+}
+verified_peer() {
+    local i u
+    for ((i = 0; i < 32; i++)); do
+        u="$(shuf -n1 -e "local" "remote")"
+        sample_message | deliver -u "$u"
+    done
+    interimap --debug || error
+
+    sed -nr "s/remote: \[[0-9]+\] (preverify=[0-9]+)$/\1/p" <"$STDERR" >"$TMPDIR/preverify"
+    [ -s "$TMPDIR/preverify" ] || error
+    ! grep -Fvx "preverify=1" <"$TMPDIR/preverify" || error
+
+    grep "^remote: SSL protocol: TLSv1\.[23] " <"$STDERR" || error
+    grep "^remote: SSL cipher: " <"$STDERR" || error
+
+    check_mailbox_status "INBOX"
+}
+
+# backup config
+install -m0600 "$XDG_CONFIG_HOME/interimap/config" "$XDG_CONFIG_HOME/interimap/config~"
+with_remote_config() {
+    install -m0600 "$XDG_CONFIG_HOME/interimap/config~" "$XDG_CONFIG_HOME/interimap/config"
+    cat >>"$XDG_CONFIG_HOME/interimap/config"
+}
+
+step_start "peer verification enabled by default"
+unverified_peer
+step_done
+
+step_start "peer verification result honored when pinned pubkey matches"
+pkey_sha256="$(openssl x509 -pubkey <"$CERT" | openssl pkey -pubin -outform DER \
+    | openssl dgst -sha256 | sed -rn "/^.*=\\s*/ {s///p;q}")"
+with_remote_config <<-EOF
+	SSL_fingerprint = sha256\$$pkey_sha256
+EOF
+unverified_peer
+! grep -Fx "remote: WARNING: Fingerprint doesn't match! MiTM in action?" <"$STDERR" || error
+step_done
+
+
+step_start "SSL_CAfile"
+if [ -f "/etc/ssl/certs/ca-certificates.crt" ]; then
+    # the self-signed cert should not be in there
+    with_remote_config <<<"SSL_CAfile = /etc/ssl/certs/ca-certificates.crt"
+    unverified_peer
+fi
+with_remote_config <<<"SSL_CAfile = $CERT"
+verified_peer
+step_done
+
+
+step_start "SSL_CApath"
+if [ -d "/etc/ssl/certs" ]; then
+    # the self-signed cert should not be in there
+    with_remote_config <<<"SSL_CApath = /etc/ssl/certs"
+    unverified_peer
+fi
+
+capath=$(mktemp --tmpdir="$TMPDIR" --directory capath.XXXXXX)
+cp -t"$capath" "$CERT"
+c_rehash "$capath"
+
+with_remote_config <<<"SSL_CApath = $capath"
+verified_peer
+step_done
+
+# vim: set filetype=sh :