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|
#!/bin/bash
key_dir='#ETCDIR#/simple-pki/keys'
if [ -r '#ETCDIR#/simple-pki/ca.conf' ]; then
. '#ETCDIR#/simple-pki/ca.conf'
fi
cd "${0%/*}"
remove_leading_spaces() {
sed '
s/^ \{'"$1"'\}//
t
d
'
}
tmp_dir=$(mktemp -d)
trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
while read -r csr; do
csr_local="${tmp_dir}/${csr##*/}"
curl -Ss --insecure "${csr}" -o "${csr_local}"
if ! content=$(
openssl req -text -noout -verify -in "${csr_local}" 2>/dev/null
); then
>&2 echo 'verify failed - skipping'
rm "${csr_local}"
continue
fi
content=$(
printf '%s\n' "${content}" \
| sed -n '
/^Certificate Request:$/,/^\S/p
' \
| remove_leading_spaces 4 \
| sed -n '
/^Data:$/,/^\S/p
' \
| remove_leading_spaces 4
)
cn=$(
printf '%s\n' "${content}" \
| sed '
s/^Subject: //
t
d
' \
| tr -d ' ' \
| tr ',' '/'
)
if [ -n "${cn%${ca_subject_prefix#/}/CN=*}" ]; then
>&2 printf 'wrong subject: "%s" vs. "%s"\n' \
"${cn}" \
"${ca_subject_prefix#/}/CN=*"
continue
fi
cn="${cn#${ca_subject_prefix#/}/CN=}"
sans=$(
printf '%s\n' "${content}" \
| sed -n '
/^Requested Extensions:$/,/^\S/ p
' \
| remove_leading_spaces 4 \
| sed -n '
/^X\S\+ Subject Alternative Name:\s*$/,/^\S/ p
' \
| remove_leading_spaces 4 \
| sed '
s/, /\n/g
'
)
if printf '%s\n' "${sans}" | grep -vq '^\(DNS\|IP\):'; then
>&2 echo 'invalid sans - skipping'
rm "${csr_local}"
continue
fi
sans=$(
printf '%s\n' "${sans}" \
| sed '
s/^\(DNS\|IP\)://
'
)
ok_sans=$(
printf '%s\n' "${cn}" "${sans}" \
| while read -r san; do
if ! curl -Ss --insecure 'https://'"${san}/${csr#*//*/}" \
| diff -q - "${csr_local}"; then
>&2 printf 'invalid san "%s" - skipping\n' "${san}"
rm "${csr_local}"
break
fi
printf '%s\n' "${san}"
done
)
if [ ! -f "${csr_local}" ]; then
continue
fi
if [ "$(printf '%s\n' "${cn}" "${sans}")" != "${ok_sans}" ]; then
>&2 echo 'some san was invalid - skipping'
rm "${csr_local}"
continue
fi
if [ ! -f "${key_dir}/${ca_name}.key" ] \
|| [ $((2*$(date +%s) + $(stat -c%Y "${key_dir}/${ca_name}.key"))) -gt $((3*$(stat -c%Y "${key_dir}/${ca_name}.key.new"))) ]; then
key_to_use="${key_dir}/${ca_name}.key.new"
crt_to_use="${key_dir}/${ca_name}.crt.new"
else
key_to_use="${key_dir}/${ca_name}.key"
crt_to_use="${key_dir}/${ca_name}.crt"
fi
openssl x509 -req \
-CAkey "${key_to_use}" \
-CA "${crt_to_use}" \
-CAserial "${key_dir}/${ca_name}.srl" \
-CAcreateserial \
-in "${csr_local}" \
-out "${csr_local%.csr}.crt"
rm "${csr_local}"
done
cd "${tmp_dir}"
tar -czf - *.crt
|
