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gentoo-overlay/eclass/ssl-cert.eclass

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6.3 KiB

# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/ssl-cert.eclass,v 1.24 2014/03/20 19:33:13 vapier Exp $
# @ECLASS: ssl-cert.eclass
# @MAINTAINER:
# @AUTHOR:
# Max Kalika <max@gentoo.org>
# @BLURB: Eclass for SSL certificates
# @DESCRIPTION:
# This eclass implements a standard installation procedure for installing
# self-signed SSL certificates.
# @EXAMPLE:
# "install_cert /foo/bar" installs ${ROOT}/foo/bar.{key,csr,crt,pem}
# @ECLASS-VARIABLE: SSL_CERT_MANDATORY
# @DESCRIPTION:
# Set to non zero if ssl-cert is mandatory for ebuild.
: ${SSL_CERT_MANDATORY:=0}
# @ECLASS-VARIABLE: SSL_CERT_USE
# @DESCRIPTION:
# Use flag to append dependency to.
: ${SSL_CERT_USE:=ssl}
if [[ "${SSL_CERT_MANDATORY}" == "0" ]]; then
DEPEND="${SSL_CERT_USE}? ( dev-libs/openssl )"
IUSE="${SSL_CERT_USE}"
else
DEPEND="dev-libs/openssl"
fi
# @FUNCTION: gen_cnf
# @USAGE:
# @DESCRIPTION:
# Initializes variables and generates the needed
# OpenSSL configuration file and a CA serial file
#
# Access: private
gen_cnf() {
# Location of the config file
SSL_CONF="${T}/${$}ssl.cnf"
# Location of the CA serial file
SSL_SERIAL="${T}/${$}ca.ser"
# Location of some random files OpenSSL can use: don't use
# /dev/u?random here -- doesn't work properly on all platforms
SSL_RANDOM="${T}/environment:${T}/eclass-debug.log:/etc/resolv.conf"
# These can be overridden in the ebuild
SSL_DAYS="${SSL_DAYS:-730}"
SSL_BITS="${SSL_BITS:-1024}"
SSL_COUNTRY="${SSL_COUNTRY:-US}"
SSL_STATE="${SSL_STATE:-California}"
SSL_LOCALITY="${SSL_LOCALITY:-Santa Barbara}"
SSL_ORGANIZATION="${SSL_ORGANIZATION:-SSL Server}"
SSL_UNIT="${SSL_UNIT:-For Testing Purposes Only}"
SSL_COMMONNAME="${SSL_COMMONNAME:-localhost}"
SSL_EMAIL="${SSL_EMAIL:-root@localhost}"
# Create the CA serial file
echo "01" > "${SSL_SERIAL}"
# Create the config file
ebegin "Generating OpenSSL configuration${1:+ for CA}"
cat <<-EOF > "${SSL_CONF}"
[ req ]
prompt = no
default_bits = ${SSL_BITS}
distinguished_name = req_dn
[ req_dn ]
C = ${SSL_COUNTRY}
ST = ${SSL_STATE}
L = ${SSL_LOCALITY}
O = ${SSL_ORGANIZATION}
OU = ${SSL_UNIT}
CN = ${SSL_COMMONNAME}${1:+ CA}
emailAddress = ${SSL_EMAIL}
EOF
eend $?
return $?
}
# @FUNCTION: get_base
# @USAGE: [if_ca]
# @RETURN: <base path>
# @DESCRIPTION:
# Simple function to determine whether we're creating
# a CA (which should only be done once) or final part
#
# Access: private
get_base() {
if [ "${1}" ] ; then
echo "${T}/${$}ca"
else
echo "${T}/${$}server"
fi
}
# @FUNCTION: gen_key
# @USAGE: <base path>
# @DESCRIPTION:
# Generates an RSA key
#
# Access: private
gen_key() {
local base=$(get_base "$1")
ebegin "Generating ${SSL_BITS} bit RSA key${1:+ for CA}"
openssl genrsa -rand "${SSL_RANDOM}" \
-out "${base}.key" "${SSL_BITS}" &> /dev/null
eend $?
return $?
}
# @FUNCTION: gen_csr
# @USAGE: <base path>
# @DESCRIPTION:
# Generates a certificate signing request using
# the key made by gen_key()
#
# Access: private
gen_csr() {
local base=$(get_base "$1")
ebegin "Generating Certificate Signing Request${1:+ for CA}"
openssl req -config "${SSL_CONF}" -new \
-key "${base}.key" -out "${base}.csr" &>/dev/null
eend $?
return $?
}
# @FUNCTION: gen_crt
# @USAGE: <base path>
# @DESCRIPTION:
# Generates either a self-signed CA certificate using
# the csr and key made by gen_csr() and gen_key() or
# a signed server certificate using the CA cert previously
# created by gen_crt()
#
# Access: private
gen_crt() {
local base=$(get_base "$1")
if [ "${1}" ] ; then
ebegin "Generating self-signed X.509 Certificate for CA"
openssl x509 -extfile "${SSL_CONF}" \
-days ${SSL_DAYS} -req -signkey "${base}.key" \
-in "${base}.csr" -out "${base}.crt" &>/dev/null
else
local ca=$(get_base 1)
ebegin "Generating authority-signed X.509 Certificate"
openssl x509 -extfile "${SSL_CONF}" \
-days ${SSL_DAYS} -req -CAserial "${SSL_SERIAL}" \
-CAkey "${ca}.key" -CA "${ca}.crt" \
-in "${base}.csr" -out "${base}.crt" &>/dev/null
fi
eend $?
return $?
}
# @FUNCTION: gen_pem
# @USAGE: <base path>
# @DESCRIPTION:
# Generates a PEM file by concatinating the key
# and cert file created by gen_key() and gen_cert()
#
# Access: private
gen_pem() {
local base=$(get_base "$1")
ebegin "Generating PEM Certificate"
(cat "${base}.key"; echo; cat "${base}.crt") > "${base}.pem"
eend $?
return $?
}
# @FUNCTION: install_cert
# @USAGE: <certificates>
# @DESCRIPTION:
# Uses all the private functions above to generate and install the
# requested certificates.
# <certificates> are full pathnames relative to ROOT, without extension.
#
# Example: "install_cert /foo/bar" installs ${ROOT}/foo/bar.{key,csr,crt,pem}
#
# Access: public
install_cert() {
if [ $# -lt 1 ] ; then
eerror "At least one argument needed"
return 1;
fi
case ${EBUILD_PHASE} in
unpack|prepare|configure|compile|test|install)
die "install_cert cannot be called in ${EBUILD_PHASE}"
;;
esac
# Generate a CA environment #164601
gen_cnf 1 || return 1
gen_key 1 || return 1
gen_csr 1 || return 1
gen_crt 1 || return 1
echo
gen_cnf || return 1
echo
local count=0
for cert in "$@" ; do
# Check the requested certificate
if [ -z "${cert##*/}" ] ; then
ewarn "Invalid certification requested, skipping"
continue
fi
# Check for previous existence of generated files
for type in key csr crt pem ; do
if [ -e "${ROOT}${cert}.${type}" ] ; then
ewarn "${ROOT}${cert}.${type}: exists, skipping"
continue 2
fi
done
# Generate the requested files
gen_key || continue
gen_csr || continue
gen_crt || continue
gen_pem || continue
echo
# Install the generated files and set sane permissions
local base=$(get_base)
install -d "${ROOT}${cert%/*}"
install -m0400 "${base}.key" "${ROOT}${cert}.key"
install -m0444 "${base}.csr" "${ROOT}${cert}.csr"
install -m0444 "${base}.crt" "${ROOT}${cert}.crt"
install -m0400 "${base}.pem" "${ROOT}${cert}.pem"
: $(( ++count ))
done
# Resulting status
if [ ${count} = 0 ] ; then
eerror "No certificates were generated"
return 1
elif [ ${count} != ${#} ] ; then
ewarn "Some requested certificates were not generated"
fi
}