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326 lines
9.7 KiB
326 lines
9.7 KiB
#!/usr/bin/env sh
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########
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# Custom cyon.ch DNS API for use with [acme.sh](https://github.com/Neilpang/acme.sh)
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#
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# Usage: acme.sh --issue --dns dns_cyon -d www.domain.com
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#
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# Dependencies:
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# -------------
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# - oathtool (When using 2 Factor Authentication)
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#
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# Issues:
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# -------
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# Any issues / questions / suggestions can be posted here:
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# https://github.com/noplanman/cyon-api/issues
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#
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# Author: Armando Lüscher <armando@noplanman.ch>
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########
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dns_cyon_add() {
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_cyon_load_credentials \
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&& _cyon_load_parameters "$@" \
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&& _cyon_print_header "add" \
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&& _cyon_login \
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&& _cyon_change_domain_env \
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&& _cyon_add_txt \
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&& _cyon_logout
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}
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dns_cyon_rm() {
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_cyon_load_credentials \
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&& _cyon_load_parameters "$@" \
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&& _cyon_print_header "delete" \
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&& _cyon_login \
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&& _cyon_change_domain_env \
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&& _cyon_delete_txt \
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&& _cyon_logout
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}
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#########################
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### PRIVATE FUNCTIONS ###
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#########################
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_cyon_load_credentials() {
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# Convert loaded password to/from base64 as needed.
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if [ "${cyon_password_b64}" ]; then
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cyon_password="$(printf "%s" "${cyon_password_b64}" | _dbase64 "multiline")"
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elif [ "${cyon_password}" ]; then
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cyon_password_b64="$(printf "%s" "${cyon_password}" | _base64)"
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fi
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if [ -z "${cyon_username}" ] || [ -z "${cyon_password}" ]; then
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# Dummy entries to satify script checker.
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cyon_username=""
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cyon_password=""
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cyon_otp_secret=""
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_err ""
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_err "You haven't set your cyon.ch login credentials yet."
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_err "Please set the required cyon environment variables."
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_err ""
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return 1
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fi
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# Save the login credentials to the account.conf file.
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_debug "Save credentials to account.conf"
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_saveaccountconf cyon_username "${cyon_username}"
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_saveaccountconf cyon_password_b64 "$cyon_password_b64"
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if [ ! -z "${cyon_otp_secret}" ]; then
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_saveaccountconf cyon_otp_secret "$cyon_otp_secret"
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else
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_clearaccountconf cyon_otp_secret
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fi
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}
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_cyon_is_idn() {
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_idn_temp="$(printf "%s" "${1}" | tr -d "[0-9a-zA-Z.,-_]")"
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_idn_temp2="$(printf "%s" "${1}" | grep -o "xn--")"
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[ "$_idn_temp" ] || [ "$_idn_temp2" ]
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}
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# comment on https://stackoverflow.com/a/10797966
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_cyon_urlencode() {
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curl -Gso /dev/null -w "%{url_effective}" --data-urlencode @- "" | cut -c 3-
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}
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_cyon_load_parameters() {
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# Read the required parameters to add the TXT entry.
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fulldomain="$(printf "%s" "${1}" | tr '[A-Z]' '[a-z]')"
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fulldomain_idn="${fulldomain}"
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# Special case for IDNs, as cyon needs a domain environment change,
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# which uses the "pretty" instead of the punycode version.
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if _cyon_is_idn "${fulldomain}"; then
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if ! _exists idn; then
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_err "Please install idn to process IDN names."
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_err ""
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return 1
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fi
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fulldomain="$(idn -u "${fulldomain}")"
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fulldomain_idn="$(idn -a "${fulldomain}")"
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fi
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_debug fulldomain "${fulldomain}"
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_debug fulldomain_idn "${fulldomain_idn}"
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txtvalue="${2}"
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_debug txtvalue "${txtvalue}"
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# This header is required for curl calls.
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_H1="X-Requested-With: XMLHttpRequest"
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}
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_cyon_print_header() {
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if [ "${1}" = "add" ]; then
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_info ""
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_info "+---------------------------------------------+"
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_info "| Adding DNS TXT entry to your cyon.ch domain |"
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_info "+---------------------------------------------+"
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_info ""
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_info " * Full Domain: ${fulldomain}"
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_info " * TXT Value: ${txtvalue}"
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_info ""
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elif [ "${1}" = "delete" ]; then
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_info ""
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_info "+-------------------------------------------------+"
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_info "| Deleting DNS TXT entry from your cyon.ch domain |"
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_info "+-------------------------------------------------+"
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_info ""
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_info " * Full Domain: ${fulldomain}"
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_info ""
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fi
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}
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_cyon_get_cookie_header() {
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printf "%s" "$(sed -n 's/Set-\(Cookie:.*cyon=[^;]*\).*/\1/p' "$HTTP_HEADER" | _tail_n 1)"
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}
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_cyon_login() {
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_info " - Logging in..."
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username_encoded="$(printf "%s" "${cyon_username}" | _cyon_urlencode)"
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password_encoded="$(printf "%s" "${cyon_password}" | _cyon_urlencode)"
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login_url="https://my.cyon.ch/auth/index/dologin-async"
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login_data="$(printf "%s" "username=${username_encoded}&password=${password_encoded}&pathname=%2F")"
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login_response="$(_post "$login_data" "$login_url")"
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_debug login_response "${login_response}"
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# Bail if login fails.
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if [ "$(printf "%s" "${login_response}" | _cyon_get_response_success)" != "success" ]; then
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_err " $(printf "%s" "${login_response}" | _cyon_get_response_message)"
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_err ""
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return 1
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fi
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_info " success"
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# NECESSARY!! Load the main page after login, to get the new cookie.
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_H2="$(_cyon_get_cookie_header)"
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_get "https://my.cyon.ch/" >/dev/null
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# todo: instead of just checking if the env variable is defined, check if we actually need to do a 2FA auth request.
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# 2FA authentication with OTP?
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if [ ! -z "${cyon_otp_secret}" ]; then
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_info " - Authorising with OTP code..."
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if ! _exists oathtool; then
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_err "Please install oathtool to use 2 Factor Authentication."
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_err ""
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return 1
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fi
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# Get OTP code with the defined secret.
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otp_code="$(oathtool --base32 --totp "${cyon_otp_secret}" 2>/dev/null)"
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login_otp_url="https://my.cyon.ch/auth/multi-factor/domultifactorauth-async"
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login_otp_data="totpcode=${otp_code}&pathname=%2F&rememberme=0"
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login_otp_response="$(_post "$login_otp_data" "$login_otp_url")"
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_debug login_otp_response "${login_otp_response}"
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# Bail if OTP authentication fails.
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if [ "$(printf "%s" "${login_otp_response}" | _cyon_get_response_success)" != "success" ]; then
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_err " $(printf "%s" "${login_otp_response}" | _cyon_get_response_message)"
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_err ""
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return 1
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fi
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_info " success"
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fi
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_info ""
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}
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_cyon_logout() {
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_info " - Logging out..."
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_get "https://my.cyon.ch/auth/index/dologout" >/dev/null
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_info " success"
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_info ""
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}
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_cyon_change_domain_env() {
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_info " - Changing domain environment..."
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# Get the "example.com" part of the full domain name.
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domain_env="$(printf "%s" "${fulldomain}" | sed -E -e 's/.*\.(.*\..*)$/\1/')"
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_debug "Changing domain environment to ${domain_env}"
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domain_env_url="https://my.cyon.ch/user/environment/setdomain/d/${domain_env}/gik/domain%3A${domain_env}"
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domain_env_response="$(_get "${domain_env_url}")"
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_debug domain_env_response "${domain_env_response}"
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if ! _cyon_check_if_2fa_missed "${domain_env_response}"; then return 1; fi
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domain_env_success="$(printf "%s" "${domain_env_response}" | _egrep_o '"authenticated":\w*' | cut -d : -f 2)"
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# Bail if domain environment change fails.
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if [ "${domain_env_success}" != "true" ]; then
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_err " $(printf "%s" "${domain_env_response}" | _cyon_get_response_message)"
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_err ""
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return 1
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fi
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_info " success"
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_info ""
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}
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_cyon_add_txt() {
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_info " - Adding DNS TXT entry..."
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add_txt_url="https://my.cyon.ch/domain/dnseditor/add-record-async"
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add_txt_data="zone=${fulldomain_idn}.&ttl=900&type=TXT&value=${txtvalue}"
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add_txt_response="$(_post "$add_txt_data" "$add_txt_url")"
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_debug add_txt_response "${add_txt_response}"
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if ! _cyon_check_if_2fa_missed "${add_txt_response}"; then return 1; fi
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add_txt_message="$(printf "%s" "${add_txt_response}" | _cyon_get_response_message)"
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add_txt_status="$(printf "%s" "${add_txt_response}" | _cyon_get_response_status)"
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# Bail if adding TXT entry fails.
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if [ "${add_txt_status}" != "true" ]; then
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_err " ${add_txt_message}"
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_err ""
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return 1
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fi
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_info " success (TXT|${fulldomain_idn}.|${txtvalue})"
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_info ""
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}
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_cyon_delete_txt() {
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_info " - Deleting DNS TXT entry..."
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list_txt_url="https://my.cyon.ch/domain/dnseditor/list-async"
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list_txt_response="$(_get "${list_txt_url}" | sed -e 's/data-hash/\\ndata-hash/g')"
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_debug list_txt_response "${list_txt_response}"
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if ! _cyon_check_if_2fa_missed "${list_txt_response}"; then return 1; fi
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# Find and delete all acme challenge entries for the $fulldomain.
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_dns_entries="$(printf "%b\n" "${list_txt_response}" | sed -n 's/data-hash=\\"\([^"]*\)\\" data-identifier=\\"\([^"]*\)\\".*/\1 \2/p')"
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printf "%s" "${_dns_entries}" | while read -r _hash _identifier; do
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dns_type="$(printf "%s" "$_identifier" | cut -d'|' -f1)"
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dns_domain="$(printf "%s" "$_identifier" | cut -d'|' -f2)"
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if [ "${dns_type}" != "TXT" ] || [ "${dns_domain}" != "${fulldomain_idn}." ]; then
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continue
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fi
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hash_encoded="$(printf "%s" "${_hash}" | _cyon_urlencode)"
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identifier_encoded="$(printf "%s" "${_identifier}" | _cyon_urlencode)"
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delete_txt_url="https://my.cyon.ch/domain/dnseditor/delete-record-async"
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delete_txt_data="$(printf "%s" "hash=${hash_encoded}&identifier=${identifier_encoded}")"
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delete_txt_response="$(_post "$delete_txt_data" "$delete_txt_url")"
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_debug delete_txt_response "${delete_txt_response}"
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if ! _cyon_check_if_2fa_missed "${delete_txt_response}"; then return 1; fi
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delete_txt_message="$(printf "%s" "${delete_txt_response}" | _cyon_get_response_message)"
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delete_txt_status="$(printf "%s" "${delete_txt_response}" | _cyon_get_response_status)"
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# Skip if deleting TXT entry fails.
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if [ "${delete_txt_status}" != "true" ]; then
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_err " ${delete_txt_message} (${_identifier})"
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else
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_info " success (${_identifier})"
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fi
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done
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_info " done"
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_info ""
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}
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_cyon_get_response_message() {
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_egrep_o '"message":"[^"]*"' | cut -d : -f 2 | tr -d '"'
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}
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_cyon_get_response_status() {
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_egrep_o '"status":\w*' | cut -d : -f 2
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}
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_cyon_get_response_success() {
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_egrep_o '"onSuccess":"[^"]*"' | cut -d : -f 2 | tr -d '"'
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}
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_cyon_check_if_2fa_missed() {
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# Did we miss the 2FA?
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if test "${1#*multi_factor_form}" != "${1}"; then
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_err " Missed OTP authentication!"
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_err ""
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return 1
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fi
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}
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