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| 1 | +#!/usr/bin/env sh |
| 2 | + |
| 3 | +# Author: Alex Leigh <leigh at alexleigh dot me> |
| 4 | +# Created: 2023-03-02 |
| 5 | + |
| 6 | +#GOOGLEDOMAINS_ACCESS_TOKEN="xxxx" |
| 7 | +#GOOGLEDOMAINS_ZONE="xxxx" |
| 8 | +GOOGLEDOMAINS_API="https://acmedns.googleapis.com/v1/acmeChallengeSets" |
| 9 | + |
| 10 | +######## Public functions ######## |
| 11 | + |
| 12 | +#Usage: dns_googledomains_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" |
| 13 | +dns_googledomains_add() { |
| 14 | + fulldomain=$1 |
| 15 | + txtvalue=$2 |
| 16 | + |
| 17 | + _info "Invoking Google Domains ACME DNS API." |
| 18 | + |
| 19 | + if ! _dns_googledomains_setup; then |
| 20 | + return 1 |
| 21 | + fi |
| 22 | + |
| 23 | + zone="$(_dns_googledomains_get_zone "$fulldomain")" |
| 24 | + if [ -z "$zone" ]; then |
| 25 | + _err "Could not find a Google Domains-managed zone containing the requested domain." |
| 26 | + return 1 |
| 27 | + fi |
| 28 | + |
| 29 | + _debug zone "$zone" |
| 30 | + _debug txtvalue "$txtvalue" |
| 31 | + |
| 32 | + _info "Adding TXT record for $fulldomain." |
| 33 | + if _dns_googledomains_api "$zone" ":rotateChallenges" "{\"accessToken\":\"$GOOGLEDOMAINS_ACCESS_TOKEN\",\"recordsToAdd\":[{\"fqdn\":\"$fulldomain\",\"digest\":\"$txtvalue\"}],\"keepExpiredRecords\":true}"; then |
| 34 | + if _contains "$response" "$txtvalue"; then |
| 35 | + _info "TXT record added." |
| 36 | + return 0 |
| 37 | + else |
| 38 | + _err "Error adding TXT record." |
| 39 | + return 1 |
| 40 | + fi |
| 41 | + fi |
| 42 | + |
| 43 | + _err "Error adding TXT record." |
| 44 | + return 1 |
| 45 | +} |
| 46 | + |
| 47 | +#Usage: dns_googledomains_rm _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" |
| 48 | +dns_googledomains_rm() { |
| 49 | + fulldomain=$1 |
| 50 | + txtvalue=$2 |
| 51 | + |
| 52 | + _info "Invoking Google Domains ACME DNS API." |
| 53 | + |
| 54 | + if ! _dns_googledomains_setup; then |
| 55 | + return 1 |
| 56 | + fi |
| 57 | + |
| 58 | + zone="$(_dns_googledomains_get_zone "$fulldomain")" |
| 59 | + if [ -z "$zone" ]; then |
| 60 | + _err "Could not find a Google Domains-managed domain based on request." |
| 61 | + return 1 |
| 62 | + fi |
| 63 | + |
| 64 | + _debug zone "$zone" |
| 65 | + _debug txtvalue "$txtvalue" |
| 66 | + |
| 67 | + _info "Removing TXT record for $fulldomain." |
| 68 | + if _dns_googledomains_api "$zone" ":rotateChallenges" "{\"accessToken\":\"$GOOGLEDOMAINS_ACCESS_TOKEN\",\"recordsToRemove\":[{\"fqdn\":\"$fulldomain\",\"digest\":\"$txtvalue\"}],\"keepExpiredRecords\":true}"; then |
| 69 | + if _contains "$response" "$txtvalue"; then |
| 70 | + _err "Error removing TXT record." |
| 71 | + return 1 |
| 72 | + else |
| 73 | + _info "TXT record removed." |
| 74 | + return 0 |
| 75 | + fi |
| 76 | + fi |
| 77 | + |
| 78 | + _err "Error removing TXT record." |
| 79 | + return 1 |
| 80 | +} |
| 81 | + |
| 82 | +######## Private functions ######## |
| 83 | + |
| 84 | +_dns_googledomains_setup() { |
| 85 | + if [ -n "$GOOGLEDOMAINS_SETUP_COMPLETED" ]; then |
| 86 | + return 0 |
| 87 | + fi |
| 88 | + |
| 89 | + GOOGLEDOMAINS_ACCESS_TOKEN="${GOOGLEDOMAINS_ACCESS_TOKEN:-$(_readaccountconf_mutable GOOGLEDOMAINS_ACCESS_TOKEN)}" |
| 90 | + GOOGLEDOMAINS_ZONE="${GOOGLEDOMAINS_ZONE:-$(_readaccountconf_mutable GOOGLEDOMAINS_ZONE)}" |
| 91 | + |
| 92 | + if [ -z "$GOOGLEDOMAINS_ACCESS_TOKEN" ]; then |
| 93 | + GOOGLEDOMAINS_ACCESS_TOKEN="" |
| 94 | + _err "Google Domains access token was not specified." |
| 95 | + _err "Please visit Google Domains Security settings to provision an ACME DNS API access token." |
| 96 | + return 1 |
| 97 | + fi |
| 98 | + |
| 99 | + if [ "$GOOGLEDOMAINS_ZONE" ]; then |
| 100 | + _savedomainconf GOOGLEDOMAINS_ACCESS_TOKEN "$GOOGLEDOMAINS_ACCESS_TOKEN" |
| 101 | + _savedomainconf GOOGLEDOMAINS_ZONE "$GOOGLEDOMAINS_ZONE" |
| 102 | + else |
| 103 | + _saveaccountconf_mutable GOOGLEDOMAINS_ACCESS_TOKEN "$GOOGLEDOMAINS_ACCESS_TOKEN" |
| 104 | + _clearaccountconf_mutable GOOGLEDOMAINS_ZONE |
| 105 | + _clearaccountconf GOOGLEDOMAINS_ZONE |
| 106 | + fi |
| 107 | + |
| 108 | + _debug GOOGLEDOMAINS_ACCESS_TOKEN "$GOOGLEDOMAINS_ACCESS_TOKEN" |
| 109 | + _debug GOOGLEDOMAINS_ZONE "$GOOGLEDOMAINS_ZONE" |
| 110 | + |
| 111 | + GOOGLEDOMAINS_SETUP_COMPLETED=1 |
| 112 | + return 0 |
| 113 | +} |
| 114 | + |
| 115 | +_dns_googledomains_get_zone() { |
| 116 | + domain=$1 |
| 117 | + |
| 118 | + # Use zone directly if provided |
| 119 | + if [ "$GOOGLEDOMAINS_ZONE" ]; then |
| 120 | + if ! _dns_googledomains_api "$GOOGLEDOMAINS_ZONE"; then |
| 121 | + return 1 |
| 122 | + fi |
| 123 | + |
| 124 | + echo "$GOOGLEDOMAINS_ZONE" |
| 125 | + return 0 |
| 126 | + fi |
| 127 | + |
| 128 | + i=2 |
| 129 | + while true; do |
| 130 | + curr=$(printf "%s" "$domain" | cut -d . -f $i-100) |
| 131 | + _debug curr "$curr" |
| 132 | + |
| 133 | + if [ -z "$curr" ]; then |
| 134 | + return 1 |
| 135 | + fi |
| 136 | + |
| 137 | + if _dns_googledomains_api "$curr"; then |
| 138 | + echo "$curr" |
| 139 | + return 0 |
| 140 | + fi |
| 141 | + |
| 142 | + i=$(_math "$i" + 1) |
| 143 | + done |
| 144 | + |
| 145 | + return 1 |
| 146 | +} |
| 147 | + |
| 148 | +_dns_googledomains_api() { |
| 149 | + zone=$1 |
| 150 | + apimethod=$2 |
| 151 | + data="$3" |
| 152 | + |
| 153 | + if [ -z "$data" ]; then |
| 154 | + response="$(_get "$GOOGLEDOMAINS_API/$zone$apimethod")" |
| 155 | + else |
| 156 | + _debug data "$data" |
| 157 | + export _H1="Content-Type: application/json" |
| 158 | + response="$(_post "$data" "$GOOGLEDOMAINS_API/$zone$apimethod")" |
| 159 | + fi |
| 160 | + |
| 161 | + _debug response "$response" |
| 162 | + |
| 163 | + if [ "$?" != "0" ]; then |
| 164 | + _err "Error" |
| 165 | + return 1 |
| 166 | + fi |
| 167 | + |
| 168 | + if _contains "$response" "\"error\": {"; then |
| 169 | + return 1 |
| 170 | + fi |
| 171 | + |
| 172 | + return 0 |
| 173 | +} |
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