144 lines
3.1 KiB
Bash
Executable File
144 lines
3.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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LPATH=( /usr/lib/le "$HOME/.local/lib/le" "lib/le" "lib" )
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for l in "${LPATH[@]}"; do
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[[ -f "$l/util" ]] && source "$l/util"
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done
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gen_san_string() {
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declare d
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declare -a argv
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argv=( "$@" )
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printf '[SAN]\nsubjectAltName='
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for d in "${argv[@]}"; do
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printf 'DNS:%s' "$d"
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if ! [[ "$d" == "${argv[-1]}" ]]; then
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printf ','
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fi
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done
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}
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gen_renew_config() {
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declare d
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printf 'domains=(\n'
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for d in "$@"; do
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printf " %s\n" "$d"
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done
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printf ')\n'
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}
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usage() {
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while read -r line; do printf '%s\n' "$line"; done <<- EOF
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Usage: le [options] <domain> [domain ...]
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Options:
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-c <dir> # Configuration directory. Default: \$HOME/.acme
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-a <dir> # A dir to put challenges in. Default: /var/www/acme
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-h # Show this message.
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EOF
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}
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main() {
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declare cfg_dir
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declare -a domains
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while (( $# )); do
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case $1 in
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-c)
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cfg_dir=$2
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shift;;
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-a)
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challenge_dir=$2
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shift;;
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-h)
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usage
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return 0;;
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--)
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shift
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break;;
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*) break;;
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esac
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shift
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done
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domains=( "$@" )
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(( ${#domains[@]} )) || {
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usage; return 1
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}
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set_default cfg_dir "$HOME/.acme"
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set_default challenge_dir '/var/www/acme'
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if ! [[ -d "$cfg_dir" ]]; then
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err "Config dir ($cfg_dir) not found, creating."
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if ! mkdir -m700 "$cfg_dir"; then
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err "Can't create config dir: $cfg_dir"
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return 1
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fi
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fi
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if ! [[ -f "$cfg_dir/account.key" ]]; then
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err "Account key not found, generating a new one."
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openssl genrsa 4096 > "$cfg_dir/account.key"
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fi
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if ! [[ -d "$cfg_dir/domains/${domains[0]}" ]]; then
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mkdir -p "$cfg_dir/domains/${domains[0]}"
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fi
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if ! [[ -f "$cfg_dir/domains/${domains[0]}/privkey.pem" ]]; then
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err "Generating a new key for ${domains[0]}."
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openssl genrsa 4096 > "$cfg_dir/domains/${domains[0]}/privkey.pem"
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fi
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if ! [[ -d "$challenge_dir" ]]; then
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err "Challenge dir does not exist: $challenge_dir"
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return 1
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fi
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err "Generating a certificate request for: ${domains[@]}."
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if (( ${#domains[@]} > 1 )); then
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openssl req -new -sha256 \
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-key "$cfg_dir/domains/${domains[0]}/privkey.pem" \
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-subj "/" \
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-reqexts SAN \
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-config <(cat /etc/ssl/openssl.cnf <(gen_san_string "${domains[@]}")) > "$cfg_dir/domains/${domains[0]}/request.csr"
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else
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openssl req -new -sha256 \
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-key "$cfg_dir/domains/${domains[0]}/privkey.pem" \
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-subj "/CN=${domains[0]}" > "$cfg_dir/domains/${domains[0]}/request.csr"
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fi
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err "Getting a signed certificate."
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acme-tiny \
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--account-key "$cfg_dir/account.key" \
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--csr "$cfg_dir/domains/${domains[0]}/request.csr" \
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--acme-dir "$challenge_dir" > "$cfg_dir/domains/${domains[0]}/certificate.pem"
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if (( $? )); then
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return 1
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fi
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gen_renew_config "${domains[@]}" > "$cfg_dir/domains/${domains[0]}/renew.cfg"
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if ! [[ -f "$cfg_dir/chain.pem" ]]; then
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err "Intermediate certificate not found, downloading."
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curl "https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem" > "$cfg_dir/chain.pem"
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fi
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cat "$cfg_dir/domains/${domains[0]}/certificate.pem" "$cfg_dir/chain.pem" > "$cfg_dir/domains/${domains[0]}/fullchain.pem"
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err "Your certificate is available at $cfg_dir/domains/${domains[0]}/fullchain.pem"
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}
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main "$@"
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