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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:46:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:46:30 +0000 |
commit | b5896ba9f6047e7031e2bdee0622d543e11a6734 (patch) | |
tree | fd7b460593a2fee1be579bec5697e6d887ea3421 /src/tls/mkcert.sh | |
parent | Initial commit. (diff) | |
download | postfix-upstream/3.4.23.tar.xz postfix-upstream/3.4.23.zip |
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tls/mkcert.sh')
-rw-r--r-- | src/tls/mkcert.sh | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/tls/mkcert.sh b/src/tls/mkcert.sh new file mode 100644 index 0000000..c15f4e1 --- /dev/null +++ b/src/tls/mkcert.sh @@ -0,0 +1,264 @@ +#! /bin/bash +# +# Copyright (c) 2016 Viktor Dukhovni <openssl-users@dukhovni.org>. +# All rights reserved. +# +# Licensed under the terms of the Postfix SECURE MAILER license +# included with the Postfix source code. +# +# This file is dual-licensed and is also available under other terms. +# Please contact the author. + +# 100 years should be enough for now +if [ -z "$DAYS" ]; then + DAYS=36525 +fi + +if [ -z "$OPENSSL_SIGALG" ]; then + OPENSSL_SIGALG=sha256 +fi + +case ${OPENSSL_SIGALG} in + null) dopts=();; + *) dopts=(-"${OPENSSL_SIGALG}");; +esac + +if [ -z "$REQMASK" ]; then + REQMASK=utf8only +fi + +stderr_onerror() { + ( + err=$("$@" >&3 2>&1) || { + printf "%s\n" "$err" >&2 + exit 1 + } + ) 3>&1 +} + +key() { + local key=$1; shift + + local alg=rsa + if [ -n "$OPENSSL_KEYALG" ]; then + alg=$OPENSSL_KEYALG + fi + + local bits=2048 + if [ -n "$OPENSSL_KEYBITS" ]; then + bits=$OPENSSL_KEYBITS + fi + + if [ ! -f "${key}.pem" ]; then + args=(-algorithm "$alg") + case $alg in + rsa) args=("${args[@]}" -pkeyopt rsa_keygen_bits:$bits );; + ec) args=("${args[@]}" -pkeyopt "ec_paramgen_curve:$bits") + args=("${args[@]}" -pkeyopt ec_param_enc:named_curve);; + dsa) args=(-paramfile "$bits");; + ed25519) ;; + ed448) ;; + *) printf "Unsupported key algorithm: %s\n" "$alg" >&2; return 1;; + esac + stderr_onerror \ + openssl genpkey "${args[@]}" -out "${key}.pem" + fi +} + +# Usage: $0 req keyname dn1 dn2 ... +req() { + local key=$1; shift + + key "$key" + local errs + + stderr_onerror \ + openssl req "${dopts[@]}" -new -key "${key}.pem" \ + -config <(printf "string_mask=%s\n[req]\n%s\n%s\n[dn]\n" \ + "$REQMASK" "prompt = no" "distinguished_name = dn" + for dn in "$@"; do echo "$dn"; done) +} + +req_nocn() { + local key=$1; shift + + key "$key" + stderr_onerror \ + openssl req "${dopts[@]}" -new -subj / -key "${key}.pem" \ + -config <(printf "[req]\n%s\n[dn]\nCN_default =\n" \ + "distinguished_name = dn") +} + +cert() { + local cert=$1; shift + local exts=$1; shift + + stderr_onerror \ + openssl x509 "${dopts[@]}" -req -out "${cert}.pem" \ + -extfile <(printf "%s\n" "$exts") "$@" +} + +genroot() { + local cn=$1; shift + local key=$1; shift + local cert=$1; shift + local skid="subjectKeyIdentifier = hash" + local akid="authorityKeyIdentifier = keyid" + + exts=$(printf "%s\n%s\n%s\n" "$skid" "$akid" "basicConstraints = critical,CA:true") + for eku in "$@" + do + exts=$(printf "%s\nextendedKeyUsage = %s\n" "$exts" "$eku") + done + csr=$(req "$key" "CN = $cn") || return 1 + echo "$csr" | + cert "$cert" "$exts" -signkey "${key}.pem" -set_serial 1 -days "${DAYS}" +} + +genca() { + local cn=$1; shift + local key=$1; shift + local cert=$1; shift + local cakey=$1; shift + local cacert=$1; shift + local skid="subjectKeyIdentifier = hash" + local akid="authorityKeyIdentifier = keyid" + + exts=$(printf "%s\n%s\n%s\n" "$skid" "$akid" "basicConstraints = critical,CA:true") + for eku in "$@" + do + exts=$(printf "%s\nextendedKeyUsage = %s\n" "$exts" "$eku") + done + if [ -n "$NC" ]; then + exts=$(printf "%s\nnameConstraints = %s\n" "$exts" "$NC") + fi + csr=$(req "$key" "CN = $cn") || return 1 + echo "$csr" | + cert "$cert" "$exts" -CA "${cacert}.pem" -CAkey "${cakey}.pem" \ + -set_serial 2 -days "${DAYS}" +} + +gen_nonbc_ca() { + local cn=$1; shift + local key=$1; shift + local cert=$1; shift + local cakey=$1; shift + local cacert=$1; shift + local skid="subjectKeyIdentifier = hash" + local akid="authorityKeyIdentifier = keyid" + + exts=$(printf "%s\n%s\n%s\n" "$skid" "$akid") + exts=$(printf "%s\nkeyUsage = %s\n" "$exts" "keyCertSign, cRLSign") + for eku in "$@" + do + exts=$(printf "%s\nextendedKeyUsage = %s\n" "$exts" "$eku") + done + csr=$(req "$key" "CN = $cn") || return 1 + echo "$csr" | + cert "$cert" "$exts" -CA "${cacert}.pem" -CAkey "${cakey}.pem" \ + -set_serial 2 -days "${DAYS}" +} + +# Usage: $0 genpc keyname certname eekeyname eecertname pcext1 pcext2 ... +# +# Note: takes csr on stdin, so must be used with $0 req like this: +# +# $0 req keyname dn | $0 genpc keyname certname eekeyname eecertname pcext ... +genpc() { + local key=$1; shift + local cert=$1; shift + local cakey=$1; shift + local ca=$1; shift + + exts=$(printf "%s\n%s\n%s\n%s\n" \ + "subjectKeyIdentifier = hash" \ + "authorityKeyIdentifier = keyid, issuer:always" \ + "basicConstraints = CA:false" \ + "proxyCertInfo = critical, @pcexts"; + echo "[pcexts]"; + for x in "$@"; do echo $x; done) + cert "$cert" "$exts" -CA "${ca}.pem" -CAkey "${cakey}.pem" \ + -set_serial 2 -days "${DAYS}" +} + +# Usage: $0 geneealt keyname certname eekeyname eecertname alt1 alt2 ... +# +# Note: takes csr on stdin, so must be used with $0 req like this: +# +# $0 req keyname dn | $0 geneealt keyname certname eekeyname eecertname alt ... +geneealt() { + local key=$1; shift + local cert=$1; shift + local cakey=$1; shift + local ca=$1; shift + + exts=$(printf "%s\n%s\n%s\n%s\n" \ + "subjectKeyIdentifier = hash" \ + "authorityKeyIdentifier = keyid" \ + "basicConstraints = CA:false" \ + "subjectAltName = @alts"; + echo "[alts]"; + for x in "$@"; do echo $x; done) + cert "$cert" "$exts" -CA "${ca}.pem" -CAkey "${cakey}.pem" \ + -set_serial 2 -days "${DAYS}" +} + +genee() { + local OPTIND=1 + local purpose=serverAuth + + while getopts p: o + do + case $o in + p) purpose="$OPTARG";; + *) echo "Usage: $0 genee [-p EKU] cn keyname certname cakeyname cacertname" >&2 + return 1;; + esac + done + + shift $((OPTIND - 1)) + local cn=$1; shift + local key=$1; shift + local cert=$1; shift + local cakey=$1; shift + local ca=$1; shift + + exts=$(printf "%s\n%s\n%s\n%s\n%s\n[alts]\n%s\n" \ + "subjectKeyIdentifier = hash" \ + "authorityKeyIdentifier = keyid, issuer" \ + "basicConstraints = CA:false" \ + "extendedKeyUsage = $purpose" \ + "subjectAltName = @alts" "DNS=${cn}") + csr=$(req "$key" "CN = $cn") || return 1 + echo "$csr" | + cert "$cert" "$exts" -CA "${ca}.pem" -CAkey "${cakey}.pem" \ + -set_serial 2 -days "${DAYS}" "$@" +} + +genss() { + local cn=$1; shift + local key=$1; shift + local cert=$1; shift + + exts=$(printf "%s\n%s\n%s\n%s\n%s\n[alts]\n%s\n" \ + "subjectKeyIdentifier = hash" \ + "authorityKeyIdentifier = keyid, issuer" \ + "basicConstraints = CA:false" \ + "extendedKeyUsage = serverAuth" \ + "subjectAltName = @alts" "DNS=${cn}") + csr=$(req "$key" "CN = $cn") || return 1 + echo "$csr" | + cert "$cert" "$exts" -signkey "${key}.pem" \ + -set_serial 1 -days "${DAYS}" "$@" +} + +gennocn() { + local key=$1; shift + local cert=$1; shift + + csr=$(req_nocn "$key") || return 1 + echo "$csr" | + cert "$cert" "" -signkey "${key}.pem" -set_serial 1 -days -1 "$@" +} + +"$@" |