355 lines
14 KiB
Bash
Executable File
355 lines
14 KiB
Bash
Executable File
#!/bin/bash
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#
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# shellcheck disable=2317,2086,2178,2001,2004,2181,2068
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function deploy_challenge {
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local FIRSTDOMAIN="${1}"
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local SLD=$(sed -E 's/(.*\.)*([^.]+)\..*/\2/' <<< "${FIRSTDOMAIN}")
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local TLD=$(sed -E 's/.*\.([^.]+)/\1/' <<< "${FIRSTDOMAIN}")
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local POSTDATA=( "--data-urlencode" "apiuser=${apiusr}"
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"--data-urlencode" "apikey=${apikey}"
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"--data-urlencode" "username=${apiusr}"
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"--data-urlencode" "ClientIp=${cliip}"
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"--data-urlencode" "SLD=${SLD}"
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"--data-urlencode" "TLD=${TLD}"
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)
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local HOSTS_URI="https://api.namecheap.com/xml.response"
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local num=0
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# get list of current records for domain
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local GET_HOSTS=( "--data-urlencode" "Command=namecheap.domains.dns.getHosts" )
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local records_list=$(curl -s "${POSTDATA[@]}" "${GET_HOSTS[@]}" "${HOSTS_URI}" | sed -En 's/<host (.*)/\1/p')
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# create $RECORDS_BACKUP directory if it doesn't yet exist
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mkdir -p "$RECORDS_BACKUP"
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# parse and store current records
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# Namecheap's setHosts method requires ALL records to be posted. Therefore, the required information for recreating ALL records
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# is extracted. In addition, to protect against unforeseen issues that may cause the setHosts method to err, this information is
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# stored in the $RECORDS_BACKUP directory allowing easy reference if they need to be restored manually.
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POSTDATA+=( "--data-urlencode" "Command=namecheap.domains.dns.setHosts" )
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if [[ "$records_list" != "" ]]; then
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OLDIFS="$IFS"
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while read -r current_record; do
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((num++))
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# extract record attributes and create comma-separate string
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record_params=$(sed -E 's/^[^"]*"|"[^"]*$//g; s/"[^"]+"/,/g; s/ +/ /g' <<< "${current_record}" | tee "${RECORDS_BACKUP}/${FIRSTDOMAIN}_${num}_record.txt")
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while IFS=, read -r hostid hostname recordtype address mxpref ttl associatedapptitle friendlyname isactive isddnsenabled; do
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if [[ "${recordtype}" = "MX" ]]; then
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POSTDATA+=(
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"--data-urlencode" "hostname${num}=${hostname}"
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"--data-urlencode" "recordtype${num}=${recordtype}"
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"--data-urlencode" "address${num}=${address}"
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"--data-urlencode" "mxpref${num}=${mxpref}"
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"--data-urlencode" "ttl${num}=${ttl}"
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)
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else
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if [[ "${recordtype}" = "CAA" ]]; then
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corrected_address="$(echo $address | sed 's/"/"/g')"
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POSTDATA+=(
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"--data-urlencode" "hostname${num}=${hostname}"
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"--data-urlencode" "recordtype${num}=${recordtype}"
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"--data-urlencode" "address${num}=${corrected_address}"
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"--data-urlencode" "ttl${num}=${ttl}"
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)
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else
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POSTDATA+=(
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"--data-urlencode" "hostname${num}=${hostname}"
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"--data-urlencode" "recordtype${num}=${recordtype}"
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"--data-urlencode" "address${num}=${address}"
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"--data-urlencode" "ttl${num}=${ttl}"
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)
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fi
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fi
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done <<< "${record_params}"
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done <<< "${records_list}"
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IFS="$OLDIFS"
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fi
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# add challenge records to post data
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local count=0
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while (( "$#" >= 3 )); do
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((num++))
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# DOMAIN
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# The domain name (CN or subject alternative name) being validated.
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DOMAIN="${1}"; shift
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# TOKEN_FILENAME
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# The name of the file containing the token to be served for HTTP
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# validation. Should be served by your web server as
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# /.well-known/acme-challenge/${TOKEN_FILENAME}.
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TOKEN_FILENAME="${1}"; shift
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# TOKEN_VALUE
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# The token value that needs to be served for validation. For DNS
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# validation, this is what you want to put in the _acme-challenge
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# TXT record. For HTTP validation it is the value that is expected
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# be found in the $TOKEN_FILENAME file.
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TOKEN_VALUE[$count]="${1}"; shift
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SUB[$count]=$(sed -E "s/$SLD.$TLD//" <<< "${DOMAIN}")
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CHALLENGE_HOSTNAME=$(sed -E "s/\.$//" <<< "${SUB[$count]}")
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POSTDATA+=(
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"--data-urlencode" "hostname${num}=_acme-challenge${CHALLENGE_HOSTNAME:+.$CHALLENGE_HOSTNAME}"
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"--data-urlencode" "recordtype${num}=TXT"
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"--data-urlencode" "address${num}=${TOKEN_VALUE[$count]}"
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"--data-urlencode" "ttl${num}=60"
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)
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((count++))
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done
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local items=$count
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api_return=$(curl -s --request POST "${POSTDATA[@]}" "${HOSTS_URI}")
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echo ${api_return} | grep -qi 'Status="OK"'
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if [[ $? != 0 ]]; then
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echo "ERROR: Post to API failed: ${api_return}"
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return 1
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fi
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# get nameservers for domain
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IFS=$'\n' read -r -d '' -a nameservers < <( dig @1.1.1.1 +short ns $SLD.$TLD && printf '\0' )
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# wait up to 2 minutes for DNS updates to be provisioned (check at 15 second intervals)
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timer=0
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count=0
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while [ $count -lt $items ]; do
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# check for DNS propagation
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while true; do
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for ns in ${nameservers[@]}; do
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dig @${ns} txt "_acme-challenge${SUB[$count]:+.${SUB[$count]%.}}.$SLD.$TLD" | grep -qe "${TOKEN_VALUE[$count]}"
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if [[ $? == 0 ]]; then
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break 2
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fi
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done
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if [[ "$timer" -ge 180 ]]; then
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# time has exceeded 3 minutes
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send_error $FIRSTDOMAIN
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return 1
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else
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echo " + DNS not propagated. Waiting 15s for record creation and replication... Total time elapsed has been $timer seconds."
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((timer+=15))
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sleep 15
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fi
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done
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((count++))
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done
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return 0
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}
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function clean_challenge {
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local DOMAIN="${1}"
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local TOKEN_FILENAME="${2}"
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local TOKEN_VALUE="${3}"
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# This hook is called after attempting to validate each domain,
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# whether or not validation was successful. Here you can delete
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# files or DNS records that are no longer needed.
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#
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# The parameters are the same as for deploy_challenge.
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local FIRSTDOMAIN="${1}"
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local SLD=$(sed -E 's/(.*\.)*([^.]+)\..*/\2/' <<< "${FIRSTDOMAIN}")
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local TLD=$(sed -E 's/.*\.([^.]+)/\1/' <<< "${FIRSTDOMAIN}")
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local POSTDATA=( "--data-urlencode" "apiuser=${apiusr}"
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"--data-urlencode" "apikey=${apikey}"
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"--data-urlencode" "username=${apiusr}"
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"--data-urlencode" "ClientIp=${cliip}"
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"--data-urlencode" "SLD=${SLD}"
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"--data-urlencode" "TLD=${TLD}"
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)
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local HOSTS_URI="https://api.namecheap.com/xml.response"
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local num=0
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# get list of current records for domain
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local GET_HOSTS=( "--data-urlencode" "Command=namecheap.domains.dns.getHosts" )
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local records_list=$(curl -s "${POSTDATA[@]}" "${GET_HOSTS[@]}" "${HOSTS_URI}" | sed -En 's/<host (.*)/\1/p')
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# remove challenge records from list
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records_list=$(sed '/acme-challenge/d' <<< "${records_list}")
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# parse and store current records
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# Namecheap's setHosts method requires ALL records to be posted. Therefore, the required information for recreating ALL records
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# is extracted. In addition, to protect against unforeseen issues that may cause the setHosts method to err, this information is
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# stored in the $RECORDS_BACKUP allowing easy reference if they need to be restored manually.
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POSTDATA+=( "--data-urlencode" "Command=namecheap.domains.dns.setHosts" )
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OLDIFS="$IFS"
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while read -r current_record; do
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((num++))
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# extract record attributes and create comma-separate string
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record_params=$(sed -E 's/^[^"]*"|"[^"]*$//g; s/"[^"]+"/,/g; s/ +/ /g' <<< "${current_record}" | tee "${RECORDS_BACKUP}/${FIRSTDOMAIN}_${num}_record.txt")
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while IFS=, read -r hostid hostname recordtype address mxpref ttl associatedapptitle friendlyname isactive isddnsenabled; do
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if [[ "$recordtype" = "MX" ]]; then
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POSTDATA+=(
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"--data-urlencode" "hostname${num}=${hostname}"
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"--data-urlencode" "recordtype${num}=${recordtype}"
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"--data-urlencode" "address${num}=${address}"
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"--data-urlencode" "mxpref${num}=${mxpref}"
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"--data-urlencode" "ttl${num}=${ttl}"
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)
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else
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POSTDATA+=(
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"--data-urlencode" "hostname${num}=${hostname}"
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"--data-urlencode" "recordtype${num}=${recordtype}"
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"--data-urlencode" "address${num}=${address}"
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"--data-urlencode" "ttl${num}=${ttl}"
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)
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fi
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done <<< "${record_params}"
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done <<< "${records_list}"
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IFS="$OLDIFS"
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curl -s --request POST "${POSTDATA[@]}" "${HOSTS_URI}" >/dev/null 2>&1
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}
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function deploy_cert {
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local DOMAIN="${1}" KEYFILE="${2}" CERTFILE="${3}" FULLCHAINFILE="${4}" CHAINFILE="${5}" TIMESTAMP="${6}"
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# This hook is called once for each certificate that has been
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# produced. Here you might, for instance, copy your new certificates
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# to service-specific locations
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#
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# Parameters:
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# - DOMAIN
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# The primary domain name, i.e. the certificate common
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# name (CN).
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# - KEYFILE
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# The path of the file containing the private key.
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# - CERTFILE
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# The path of the file containing the signed certificate.
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# - FULLCHAINFILE
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# The path of the file containing the full certificate chain.
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# - CHAINFILE
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# The path of the file containing the intermediate certificate(s).
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# - TIMESTAMP
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# Timestamp when the specified certificate was created.
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echo "Deploying certificate for ${DOMAIN}..."
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# copy new certificate to /etc/pki/tls/certs folder
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cp "${CERTFILE}" "${DEPLOYED_CERTDIR}/${DOMAIN}.crt"
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echo " + certificate copied"
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# copy new key to /etc/pki/tls/private folder
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cp "${KEYFILE}" "${DEPLOYED_KEYDIR}/${DOMAIN}.key"
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echo " + key copied"
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# copy new chain file which contains the intermediate certificate(s)
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cp "${CHAINFILE}" "${DEPLOYED_CERTDIR}/letsencrypt-intermediate-certificates.pem"
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echo " + intermediate certificate chain copied"
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# combine certificate and chain file (used by Nginx)
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cat "${CERTFILE}" "${CHAINFILE}" > "${DEPLOYED_CERTDIR}/${DOMAIN}-chain.crt"
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echo " + combine certificate and intermediate certificate chain"
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# send email notification
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send_notification $DOMAIN
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return 0
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}
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function unchanged_cert {
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local DOMAIN="${1}" KEYFILE="${2}" CERTFILE="${3}" FULLCHAINFILE="${4}" CHAINFILE="${5}"
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# This hook is called once for each certificate that is still
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# valid and therefore wasn't reissued.
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#
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# Parameters:
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# - DOMAIN
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# The primary domain name, i.e. the certificate common
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# name (CN).
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# - KEYFILE
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# The path of the file containing the private key.
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# - CERTFILE
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# The path of the file containing the signed certificate.
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# - FULLCHAINFILE
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# The path of the file containing the full certificate chain.
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# - CHAINFILE
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# The path of the file containing the intermediate certificate(s).
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}
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function invalid_challenge() {
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local DOMAIN="${1}" RESPONSE="${2}"
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# This hook is called if the challenge response has failed, so domain
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# owners can be aware and act accordingly.
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#
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# Parameters:
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# - DOMAIN
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# The primary domain name, i.e. the certificate common
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# name (CN).
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# - RESPONSE
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# The response that the verification server returned
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}
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function request_failure() {
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local STATUSCODE="${1}" REASON="${2}" REQTYPE="${3}"
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# This hook is called when an HTTP request fails (e.g., when the ACME
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# server is busy, returns an error, etc). It will be called upon any
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# response code that does not start with '2'. Useful to alert admins
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# about problems with requests.
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#
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# Parameters:
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# - STATUSCODE
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# The HTML status code that originated the error.
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# - REASON
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# The specified reason for the error.
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# - REQTYPE
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# The kind of request that was made (GET, POST...)
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}
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function startup_hook() {
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# This hook is called before the cron command to do some initial tasks
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# (e.g. starting a webserver).
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:
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}
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function exit_hook() {
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# This hook is called at the end of the cron command and can be used to
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# do some final (cleanup or other) tasks.
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:
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}
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# Setup default config values, load configuration file
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function load_config() {
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# Default values
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apiusr=
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apikey=
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RECORDS_BACKUP=${BASEDIR}/records_backup
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DEPLOYED_CERTDIR=$PWD/certs
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DEPLOYED_KEYDIR=$PWD/private
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mkdir -p "$DEPLOYED_KEYDIR" "$DEPLOYED_CERTDIR" "$RECORDS_BACKUP"
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# Check if config file exists
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if [[ ! -f "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/config" ]]; then
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echo "#" >&2
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echo "# !! WARNING !! No main config file found, using default config!" >&2
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echo "#" >&2
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else
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. "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/config"
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fi
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}
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send_error() {
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>&2 echo "Failed to recertify ${FIRSTDOMAIN}"
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}
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send_notification() {
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echo "SUCCESS for ${FIRSTDOMAIN}"
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}
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# load config values
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load_config
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mkdir -p "$RECORDS_BACKUP" "$DEPLOYED_CERTDIR" "$DEPLOYED_KEYDIR"
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# get this client's ip address
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cliip=$(curl -s -4 https://ifconfig.co/ip)
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HANDLER="$1"; shift
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if [[ "${HANDLER}" =~ ^(deploy_challenge|clean_challenge|deploy_cert|unchanged_cert|invalid_challenge|request_failure|startup_hook|exit_hook)$ ]]; then
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"$HANDLER" "$@"
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fi
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exit $?
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