tests: add iotests helpers for dealing with TLS certificates

Add helpers to common.tls for creating TLS certificates for a CA,
server and client.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181116155325.22428-6-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: spelling and quoting touchups]
Signed-off-by: Eric Blake <eblake@redhat.com>

tests/qemu-iotests/common.tls

@@ -0,0 +1,137 @@
+#!/bin/bash
+#
+# Helpers for TLS related config
+#
+# Copyright (C) 2018 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+tls_dir="${TEST_DIR}/tls"
+
+function tls_x509_cleanup()
+{
+    rm -f "${tls_dir}"/*.pem
+    rm -f "${tls_dir}"/*/*.pem
+    rmdir "${tls_dir}"/*
+    rmdir "${tls_dir}"
+}
+
+
+function tls_x509_init()
+{
+    mkdir -p "${tls_dir}"
+
+    # use a fixed key so we don't waste system entropy on
+    # each test run
+    cat > "${tls_dir}/key.pem" <<EOF
+-----BEGIN PRIVATE KEY-----
+MIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBALVcr
+BL40Tm6yq88FBhJNw1aaoCjmtg0l4dWQZ/e9Fimx4ARxFpT+ji4FE
+Cgl9s/SGqC+1nvlkm9ViSo0j7MKDbnDB+VRHDvMAzQhA2X7e8M0n9
+rPolUY2lIVC83q0BBaOBkCj2RSmT2xTEbbC2xLukSrg2WP/ihVOxc
+kXRuyFtzAgMBAAECgYB7slBexDwXrtItAMIH6m/U+LUpNe0Xx48OL
+IOn4a4whNgO/o84uIwygUK27ZGFZT0kAGAk8CdF9hA6ArcbQ62s1H
+myxrUbF9/mrLsQw1NEqpuUk9Ay2Tx5U/wPx35S3W/X2AvR/ZpTnCn
+2q/7ym9fyiSoj86drD7BTvmKXlOnOwQJBAPOFMp4mMa9NGpGuEssO
+m3Uwbp6lhcP0cA9MK+iOmeANpoKWfBdk5O34VbmeXnGYWEkrnX+9J
+bM4wVhnnBWtgBMCQQC+qAEmvwcfhauERKYznMVUVksyeuhxhCe7EK
+mPh+U2+g0WwdKvGDgO0PPt1gq0ILEjspMDeMHVdTwkaVBo/uMhAkA
+Z5SsZyCP2aTOPFDypXRdI4eqRcjaEPOUBq27r3uYb/jeboVb2weLa
+L1MmVuHiIHoa5clswPdWVI2y0em2IGoDAkBPSp/v9VKJEZabk9Frd
+a+7u4fanrM9QrEjY3KhduslSilXZZSxrWjjAJPyPiqFb3M8XXA26W
+nz1KYGnqYKhLcBAkB7dt57n9xfrhDpuyVEv+Uv1D3VVAhZlsaZ5Pp
+dcrhrkJn2sa/+O8OKvdrPSeeu/N5WwYhJf61+CPoenMp7IFci
+-----END PRIVATE KEY-----
+EOF
+}
+
+
+function tls_x509_create_root_ca()
+{
+    name=${1:-ca-cert}
+
+    cat > "${tls_dir}/ca.info" <<EOF
+cn = Cthulhu Dark Lord Enterprises $name
+ca
+cert_signing_key
+EOF
+
+    certtool --generate-self-signed \
+             --load-privkey "${tls_dir}/key.pem" \
+             --template "${tls_dir}/ca.info" \
+             --outfile "${tls_dir}/$name-cert.pem" 2>&1 | head -1
+
+    rm -f "${tls_dir}/ca.info"
+}
+
+
+function tls_x509_create_server()
+{
+    caname=$1
+    name=$2
+
+    mkdir -p "${tls_dir}/$name"
+    cat > "${tls_dir}/cert.info" <<EOF
+organization = Cthulhu Dark Lord Enterprises $name
+cn = localhost
+dns_name = localhost
+dns_name = localhost.localdomain
+ip_address = 127.0.0.1
+ip_address = ::1
+tls_www_server
+encryption_key
+signing_key
+EOF
+
+    certtool --generate-certificate \
+             --load-ca-privkey "${tls_dir}/key.pem" \
+             --load-ca-certificate "${tls_dir}/$caname-cert.pem" \
+             --load-privkey "${tls_dir}/key.pem" \
+             --template "${tls_dir}/cert.info" \
+             --outfile "${tls_dir}/$name/server-cert.pem" 2>&1 | head -1
+    ln -s "${tls_dir}/$caname-cert.pem" "${tls_dir}/$name/ca-cert.pem"
+    ln -s "${tls_dir}/key.pem" "${tls_dir}/$name/server-key.pem"
+
+    rm -f "${tls_dir}/cert.info"
+}
+
+
+function tls_x509_create_client()
+{
+    caname=$1
+    name=$2
+
+    mkdir -p "${tls_dir}/$name"
+    cat > "${tls_dir}/cert.info" <<EOF
+country = South Pacific
+locality =  R'lyeh
+organization = Cthulhu Dark Lord Enterprises $name
+cn = localhost
+tls_www_client
+encryption_key
+signing_key
+EOF
+
+    certtool --generate-certificate \
+             --load-ca-privkey "${tls_dir}/key.pem" \
+             --load-ca-certificate "${tls_dir}/$caname-cert.pem" \
+             --load-privkey "${tls_dir}/key.pem" \
+             --template "${tls_dir}/cert.info" \
+             --outfile "${tls_dir}/$name/client-cert.pem" 2>&1 | head -1
+    ln -s "${tls_dir}/$caname-cert.pem" "${tls_dir}/$name/ca-cert.pem"
+    ln -s "${tls_dir}/key.pem" "${tls_dir}/$name/client-key.pem"
+
+    rm -f "${tls_dir}/cert.info"
+}