mirror of
https://github.com/openvswitch/ovs
synced 2025-08-22 01:51:26 +00:00
c8efec6ef7
This patch modifies ovs-pki to generate x.509 version 3 certificate. Compared with the x.509 v1 certificate generated by ovs-pki, version 3 certificate adds subjectAltName field and sets its value the same as common name (CN). The main reason for this change is to enable strongSwan IKE daemon to extract certificate identity string from the subjectAltName field, which makes OVN IPsec implementation easier. Signed-off-by: Qiuyu Xiao <qiuyu.xiao.qyx@gmail.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
562 lines
15 KiB
Bash
Executable File
562 lines
15 KiB
Bash
Executable File
#! /bin/sh
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# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -e
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pkidir='@PKIDIR@'
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command=
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prev=
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force=no
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batch=no
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unique_name=no
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log='@LOGDIR@/ovs-pki.log'
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keytype=rsa
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bits=2048
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# OS-specific compatibility routines
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case $(uname -s) in
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FreeBSD|NetBSD|Darwin)
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file_mod_epoch()
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{
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stat -r "$1" | awk '{print $10}'
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}
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file_mod_date()
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{
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stat -f '%Sm' "$1"
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}
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sha1sum()
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{
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sha1 "$@"
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}
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;;
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*)
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file_mod_epoch()
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{
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date -r "$1" +%s
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}
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file_mod_date()
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{
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date -r "$1"
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}
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;;
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esac
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for option; do
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# This option-parsing mechanism borrowed from a Autoconf-generated
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# configure script under the following license:
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# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
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# 2002, 2003, 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
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# This configure script is free software; the Free Software Foundation
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# gives unlimited permission to copy, distribute and modify it.
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# If the previous option needs an argument, assign it.
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if test -n "$prev"; then
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eval $prev=\$option
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prev=
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continue
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fi
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case $option in
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*=*) optarg=`expr "X$option" : '[^=]*=\(.*\)'` ;;
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*) optarg=yes ;;
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esac
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case $dashdash$option in
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--)
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dashdash=yes ;;
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-h|--help)
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cat <<EOF
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ovs-pki, for managing a simple OpenFlow public key infrastructure
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usage: $0 [OPTION...] COMMAND [ARG...]
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The valid stand-alone commands and their arguments are:
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init Initialize the PKI
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req NAME Create new private key and certificate request
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named NAME-privkey.pem and NAME-req.pem, resp.
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sign NAME [TYPE] Sign switch certificate request NAME-req.pem,
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producing certificate NAME-cert.pem
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req+sign NAME [TYPE] Combine the above two steps, producing all three files.
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verify NAME [TYPE] Checks that NAME-cert.pem is a valid TYPE certificate
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fingerprint FILE Prints the fingerprint for FILE
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self-sign NAME Sign NAME-req.pem with NAME-privkey.pem,
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producing self-signed certificate NAME-cert.pem
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Each TYPE above is a certificate type: 'switch' (default) or 'controller'.
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Options for 'init', 'req', and 'req+sign' only:
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-k, --key=rsa|dsa Type of keys to use (default: rsa)
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-B, --bits=NBITS Number of bits in keys (default: 2048). For DSA keys,
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this has an effect only on 'init'.
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-D, --dsaparam=FILE File with DSA parameters (DSA only)
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(default: dsaparam.pem within PKI directory)
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Options for use with the 'sign' command:
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-b, --batch Skip fingerprint verification
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Options that apply to any command:
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-d, --dir=DIR Directory where the PKI is located
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(default: $pkidir)
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-f, --force Continue even if file or directory already exists
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-l, --log=FILE Log openssl output to FILE (default: ovs-log.log)
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-u, --unique NAME is unique (don't append UUID/date)
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-h, --help Print this usage message.
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-V, --version Display version information.
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EOF
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exit 0
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;;
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-V|--version)
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echo "ovs-pki (Open vSwitch) @VERSION@"
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exit 0
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;;
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--di*=*)
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pkidir=$optarg
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;;
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--di*|-d)
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prev=pkidir
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;;
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--k*=*)
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keytype=$optarg
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;;
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--k*|-k)
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prev=keytype
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;;
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--bi*=*)
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bits=$optarg
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;;
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--bi*|-B)
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prev=bits
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;;
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--ds*=*)
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dsaparam=$optarg
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;;
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--ds*|-D)
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prev=dsaparam
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;;
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--l*=*)
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log=$optarg
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;;
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--l*|-l)
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prev=log
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;;
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--force|-f)
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force=yes
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;;
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--ba*|-b)
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batch=yes
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;;
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--un*|-u)
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unique_name=yes
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;;
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-*)
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echo "unrecognized option $option" >&2
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exit 1
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;;
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*)
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if test -z "$command"; then
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command=$option
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elif test -z "${arg1+set}"; then
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arg1=$option
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elif test -z "${arg2+set}"; then
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arg2=$option
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else
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echo "$option: only two arguments may be specified" >&2
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exit 1
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fi
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;;
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esac
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shift
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done
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if test -n "$prev"; then
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option=--`echo $prev | sed 's/_/-/g'`
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{ echo "$as_me: error: missing argument to $option" >&2
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{ (exit 1); exit 1; }; }
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fi
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if test -z "$command"; then
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echo "$0: missing command name; use --help for help" >&2
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exit 1
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fi
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if test "$keytype" != rsa && test "$keytype" != dsa; then
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echo "$0: argument to -k or --key must be rsa or dsa" >&2
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exit 1
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fi
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if test "$bits" -lt 1024; then
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echo "$0: argument to -B or --bits must be at least 1024" >&2
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exit 1
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fi
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if test -z "$dsaparam"; then
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dsaparam=$pkidir/dsaparam.pem
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fi
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case $log in
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/* | ?:[\\/]*) ;;
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*) log=`pwd`/$log ;;
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esac
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logdir=$(dirname "$log")
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if test ! -d "$logdir"; then
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mkdir -p -m750 "$logdir" 2>/dev/null || true
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if test ! -d "$logdir"; then
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echo "$0: log directory $logdir does not exist and cannot be created" >&2
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exit 1
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fi
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fi
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if test "$command" = "init"; then
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if test -e "$pkidir" && test "$force" != "yes"; then
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echo "$0: $pkidir already exists and --force not specified" >&2
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exit 1
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fi
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if test ! -d "$pkidir"; then
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mkdir -p "$pkidir"
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fi
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cd "$pkidir"
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exec 3>>$log
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if test $keytype = dsa && test ! -e dsaparam.pem; then
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echo "Generating DSA parameters, please wait..." >&2
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openssl dsaparam -out dsaparam.pem $bits 1>&3 2>&3
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fi
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# Get the current date to add some uniqueness to this certificate
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curr_date=`date +"%Y %b %d %T"`
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# Create the CAs.
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for ca in controllerca switchca; do
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echo "Creating $ca..." >&2
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oldpwd=`pwd`
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mkdir -p $ca
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cd $ca
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mkdir -p certs crl newcerts
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mkdir -p -m 0700 private
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touch index.txt
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test -e crlnumber || echo 01 > crlnumber
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test -e serial || echo 01 > serial
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# Put DSA parameters in directory.
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if test $keytype = dsa && test ! -e dsaparam.pem; then
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cp ../dsaparam.pem .
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fi
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# Write CA configuration file.
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if test ! -e ca.cnf; then
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sed "s/@ca@/$ca/g;s/@curr_date@/$curr_date/g" > ca.cnf <<'EOF'
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[ req ]
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prompt = no
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distinguished_name = req_distinguished_name
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[ req_distinguished_name ]
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C = US
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ST = CA
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L = Palo Alto
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O = Open vSwitch
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OU = @ca@
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CN = OVS @ca@ CA Certificate (@curr_date@)
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[ ca ]
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default_ca = the_ca
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[ the_ca ]
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dir = . # top dir
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database = $dir/index.txt # index file.
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new_certs_dir = $dir/newcerts # new certs dir
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certificate = $dir/cacert.pem # The CA cert
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serial = $dir/serial # serial no file
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private_key = $dir/private/cakey.pem# CA private key
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RANDFILE = $dir/private/.rand # random number file
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default_days = 3650 # how long to certify for
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default_crl_days= 30 # how long before next CRL
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default_md = sha512 # message digest to use
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policy = policy # default policy
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email_in_dn = no # Don't add the email into cert DN
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name_opt = ca_default # Subject name display option
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cert_opt = ca_default # Certificate display option
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copy_extensions = copy # Copy extensions from request
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unique_subject = no # Allow certs with duplicate subjects
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# For the CA policy
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[ policy ]
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countryName = optional
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stateOrProvinceName = optional
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organizationName = match
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organizationalUnitName = optional
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commonName = supplied
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emailAddress = optional
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# For the x509v3 extension
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[ ca_cert ]
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basicConstraints=CA:true
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[ usr_cert ]
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basicConstraints=CA:false
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EOF
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fi
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# Create certificate authority.
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if test $keytype = dsa; then
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newkey=dsa:dsaparam.pem
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else
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newkey=rsa:$bits
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fi
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openssl req -config ca.cnf -nodes \
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-newkey $newkey -keyout private/cakey.pem -out careq.pem \
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1>&3 2>&3
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openssl ca -config ca.cnf -create_serial \
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-extensions ca_cert -out cacert.pem \
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-days 3650 -batch -keyfile private/cakey.pem -selfsign \
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-infiles careq.pem 1>&3 2>&3
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chmod 0700 private/cakey.pem
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cd "$oldpwd"
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done
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exit 0
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fi
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one_arg() {
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if test -z "$arg1" || test -n "$arg2"; then
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echo "$0: $command must have exactly one argument; use --help for help" >&2
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exit 1
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fi
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}
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one_or_two_args() {
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if test -z "$arg1"; then
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echo "$0: $command must have one or two arguments; use --help for help" >&2
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exit 1
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fi
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}
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must_not_exist() {
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if test -e "$1" && test "$force" != "yes"; then
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echo "$0: $1 already exists and --force not supplied" >&2
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exit 1
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fi
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}
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make_tmpdir() {
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TMP=/tmp/ovs-pki.tmp$$
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rm -rf $TMP
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trap "rm -rf $TMP" 0
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mkdir -m 0700 $TMP
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}
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fingerprint() {
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file=$1
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name=${1-$2}
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date=$(file_mod_date "$file")
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if grep -e '-BEGIN CERTIFICATE-' "$file" > /dev/null; then
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fingerprint=$(openssl x509 -noout -in "$file" -fingerprint |
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sed 's/SHA1 Fingerprint=//' | tr -d ':')
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else
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fingerprint=$(sha1sum "$file" | awk '{print $1}')
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fi
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printf "$name\\t$date\\n"
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case $file in
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$fingerprint*)
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printf "\\t(correct fingerprint in filename)\\n"
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;;
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*)
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printf "\\tfingerprint $fingerprint\\n"
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;;
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esac
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}
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verify_fingerprint() {
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fingerprint "$@"
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if test $batch != yes; then
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echo "Does fingerprint match? (yes/no)"
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read answer
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if test "$answer" != yes; then
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echo "Match failure, aborting" >&2
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exit 1
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fi
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fi
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}
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check_type() {
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if test x = x"$1"; then
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type=switch
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elif test "$1" = switch || test "$1" = controller; then
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type=$1
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else
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echo "$0: type argument must be 'switch' or 'controller'" >&2
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exit 1
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fi
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}
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parse_age() {
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number=$(echo $1 | sed 's/^\([0-9]\+\)\([[:alpha:]]\+\)/\1/')
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unit=$(echo $1 | sed 's/^\([0-9]\+\)\([[:alpha:]]\+\)/\2/')
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case $unit in
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s)
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factor=1
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;;
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min)
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factor=60
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;;
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h)
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factor=3600
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;;
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day)
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factor=86400
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;;
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*)
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echo "$1: age not in the form Ns, Nmin, Nh, Nday (e.g. 1day)" >&2
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exit 1
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;;
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esac
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echo $(($number * $factor))
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}
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must_exist() {
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if test ! -e "$1"; then
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echo "$0: $1 does not exist" >&2
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exit 1
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fi
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}
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pkidir_must_exist() {
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if test ! -e "$pkidir"; then
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echo "$0: $pkidir does not exist (need to run 'init' or use '--dir'?)" >&2
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exit 1
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elif test ! -d "$pkidir"; then
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echo "$0: $pkidir is not a directory" >&2
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exit 1
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fi
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}
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make_request() {
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must_not_exist "$arg1-privkey.pem"
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must_not_exist "$arg1-req.pem"
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make_tmpdir
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if test $unique_name != yes; then
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# Use uuidgen or date to create unique subject DNs.
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unique=`(uuidgen) 2>/dev/null` || unique=`date +"%Y %b %d %T"`
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cn="$arg1 id:$unique"
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else
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cn="$arg1"
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fi
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cat > "$TMP/req.cnf" <<EOF
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[ req ]
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prompt = no
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distinguished_name = req_distinguished_name
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req_extensions = v3_req
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[ req_distinguished_name ]
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C = US
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ST = CA
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L = Palo Alto
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O = Open vSwitch
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OU = Open vSwitch certifier
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CN = $cn
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[ v3_req ]
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subjectAltName = DNS:$cn
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EOF
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if test $keytype = rsa; then
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(umask 077 && openssl genrsa -out "$1-privkey.pem" $bits) 1>&3 2>&3 \
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|| exit $?
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else
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must_exist "$dsaparam"
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(umask 077 && openssl gendsa -out "$1-privkey.pem" "$dsaparam") \
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1>&3 2>&3 || exit $?
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fi
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openssl req -config "$TMP/req.cnf" -new -text \
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-key "$1-privkey.pem" -out "$1-req.pem" 1>&3 2>&3
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}
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sign_request() {
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must_exist "$1"
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must_not_exist "$2"
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pkidir_must_exist
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case "$1" in
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/* | ?:[\\/]*)
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request_file="$1"
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;;
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*)
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request_file="`pwd`/$1"
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;;
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esac
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(cd "$pkidir/${type}ca" &&
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openssl ca -config ca.cnf -extensions usr_cert -batch -in "$request_file") \
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> "$2.tmp$$" 2>&3
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mv "$2.tmp$$" "$2"
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}
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glob() {
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files=$(echo $1)
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if test "$files" != "$1"; then
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echo "$files"
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fi
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}
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exec 3>>$log || true
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if test "$command" = req; then
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one_arg
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make_request "$arg1"
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fingerprint "$arg1-req.pem"
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elif test "$command" = sign; then
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one_or_two_args
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check_type "$arg2"
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verify_fingerprint "$arg1-req.pem"
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sign_request "$arg1-req.pem" "$arg1-cert.pem"
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elif test "$command" = req+sign; then
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one_or_two_args
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check_type "$arg2"
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pkidir_must_exist
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make_request "$arg1"
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sign_request "$arg1-req.pem" "$arg1-cert.pem"
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fingerprint "$arg1-req.pem"
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elif test "$command" = verify; then
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one_or_two_args
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must_exist "$arg1-cert.pem"
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check_type "$arg2"
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pkidir_must_exist
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openssl verify -CAfile "$pkidir/${type}ca/cacert.pem" "$arg1-cert.pem"
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elif test "$command" = fingerprint; then
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one_arg
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fingerprint "$arg1"
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elif test "$command" = self-sign; then
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one_arg
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must_exist "$arg1-req.pem"
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must_exist "$arg1-privkey.pem"
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must_not_exist "$arg1-cert.pem"
|
|
make_tmpdir
|
|
cat > "$TMP/v3.ext" <<EOF
|
|
subjectAltName = DNS:$arg1
|
|
EOF
|
|
|
|
# Create both the private key and certificate with restricted permissions.
|
|
(umask 077 && \
|
|
openssl x509 -in "$arg1-req.pem" -out "$arg1-cert.pem.tmp" \
|
|
-signkey "$arg1-privkey.pem" -req -days 3650 -text \
|
|
-extfile $TMP/v3.ext) 2>&3 || exit $?
|
|
|
|
# Reset the permissions on the certificate to the user's default.
|
|
cat "$arg1-cert.pem.tmp" > "$arg1-cert.pem"
|
|
rm -f "$arg1-cert.pem.tmp"
|
|
else
|
|
echo "$0: $command command unknown; use --help for help" >&2
|
|
exit 1
|
|
fi
|