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Merge pull request #1287 from martgras/dev
Azure DNS API- support for ACME v2
This commit is contained in:
neil
GitHub
commit
3d0e269241
@ -1,5 +1,7 @@
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#!/usr/bin/env sh
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WIKI="https://github.com/Neilpang/acme.sh/wiki/How-to-use-Azure-DNS"
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######## Public functions #####################
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# Usage: add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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@ -69,12 +71,36 @@ dns_azure_add() {
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acmeRecordURI="https://management.azure.com$(printf '%s' "$_domain_id" | sed 's/\\//g')/TXT/$_sub_domain?api-version=2017-09-01"
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_debug "$acmeRecordURI"
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body="{\"properties\": {\"TTL\": 3600, \"TXTRecords\": [{\"value\": [\"$txtvalue\"]}]}}"
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# Get existing TXT record
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_azure_rest GET "$acmeRecordURI" "" "$accesstoken"
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values="{\"value\":[\"$txtvalue\"]}"
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timestamp="$(_time)"
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if [ "$_code" = "200" ]; then
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vlist="$(echo "$response" | _egrep_o "\"value\"\s*:\s*\[\s*\"[^\"]*\"\s*]" | cut -d : -f 2 | tr -d "[]\"")"
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_debug "existing TXT found"
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_debug "$vlist"
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existingts="$(echo "$response" | _egrep_o "\"acmetscheck\"\s*:\s*\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d "\"")"
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if [ -z "$existingts" ]; then
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# the record was not created by acme.sh. Copy the exisiting entires
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existingts=$timestamp
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fi
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_diff="$(_math "$timestamp - $existingts")"
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_debug "existing txt age: $_diff"
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# only use recently added records and discard if older than 2 hours because they are probably orphaned
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if [ "$_diff" -lt 7200 ]; then
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_debug "existing txt value: $vlist"
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for v in $vlist; do
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values="$values ,{\"value\":[\"$v\"]}"
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done
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fi
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fi
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# Add the txtvalue TXT Record
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body="{\"properties\":{\"metadata\":{\"acmetscheck\":\"$timestamp\"},\"TTL\":10, \"TXTRecords\":[$values]}}"
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_azure_rest PUT "$acmeRecordURI" "$body" "$accesstoken"
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if [ "$_code" = "200" ] || [ "$_code" = '201' ]; then
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_info "validation record added"
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_info "validation value added"
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else
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_err "error adding validation record ($_code)"
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_err "error adding validation value ($_code)"
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return 1
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fi
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}
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@ -141,7 +167,20 @@ dns_azure_rm() {
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acmeRecordURI="https://management.azure.com$(printf '%s' "$_domain_id" | sed 's/\\//g')/TXT/$_sub_domain?api-version=2017-09-01"
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_debug "$acmeRecordURI"
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body="{\"properties\": {\"TTL\": 3600, \"TXTRecords\": [{\"value\": [\"$txtvalue\"]}]}}"
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# Get existing TXT record
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_azure_rest GET "$acmeRecordURI" "" "$accesstoken"
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timestamp="$(_time)"
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if [ "$_code" = "200" ]; then
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vlist="$(echo "$response" | _egrep_o "\"value\"\s*:\s*\[\s*\"[^\"]*\"\s*]" | cut -d : -f 2 | tr -d "[]\"" | grep -v "$txtvalue")"
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values=""
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comma=""
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for v in $vlist; do
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values="$values$comma{\"value\":[\"$v\"]}"
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comma=","
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done
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if [ -z "$values" ]; then
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# No values left remove record
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_debug "removing validation record completely $acmeRecordURI"
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_azure_rest DELETE "$acmeRecordURI" "" "$accesstoken"
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if [ "$_code" = "200" ] || [ "$_code" = '204' ]; then
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_info "validation record removed"
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@ -149,6 +188,18 @@ dns_azure_rm() {
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_err "error removing validation record ($_code)"
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return 1
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fi
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else
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# Remove only txtvalue from the TXT Record
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body="{\"properties\":{\"metadata\":{\"acmetscheck\":\"$timestamp\"},\"TTL\":10, \"TXTRecords\":[$values]}}"
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_azure_rest PUT "$acmeRecordURI" "$body" "$accesstoken"
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if [ "$_code" = "200" ] || [ "$_code" = '201' ]; then
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_info "validation value removed"
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else
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_err "error removing validation value ($_code)"
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return 1
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fi
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fi
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fi
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}
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################### Private functions below ##################################
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@ -159,52 +210,92 @@ _azure_rest() {
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data="$3"
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accesstoken="$4"
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MAX_REQUEST_RETRY_TIMES=5
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_request_retry_times=0
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while [ "${_request_retry_times}" -lt "$MAX_REQUEST_RETRY_TIMES" ]; do
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_debug3 _request_retry_times "$_request_retry_times"
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export _H1="authorization: Bearer $accesstoken"
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export _H2="accept: application/json"
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export _H3="Content-Type: application/json"
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# clear headers from previous request to avoid getting wrong http code on timeouts
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:>"$HTTP_HEADER"
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_debug "$ep"
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if [ "$m" != "GET" ]; then
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_debug data "$data"
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_secure_debug2 "data $data"
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response="$(_post "$data" "$ep" "" "$m")"
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else
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response="$(_get "$ep")"
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fi
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_debug2 response "$response"
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_secure_debug2 "response $response"
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_code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\r\n")"
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_debug2 "http response code $_code"
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if [ "$?" != "0" ]; then
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_err "error $ep"
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_debug "http response code $_code"
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if [ "$_code" = "401" ]; then
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# we have an invalid access token set to expired
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_saveaccountconf_mutable AZUREDNS_TOKENVALIDTO "0"
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_err "access denied make sure your Azure settings are correct. See $WIKI"
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return 1
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fi
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# See https://docs.microsoft.com/en-us/azure/architecture/best-practices/retry-service-specific#general-rest-and-retry-guidelines for retryable HTTP codes
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if [ "$?" != "0" ] || [ -z "$_code" ] || [ "$_code" = "408" ] || [ "$_code" = "500" ] || [ "$_code" = "503" ] || [ "$_code" = "504" ]; then
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_request_retry_times="$(_math "$_request_retry_times" + 1)"
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_info "REST call error $_code retrying $ep in $_request_retry_times s"
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_sleep "$_request_retry_times"
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continue
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fi
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break
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done
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if [ "$_request_retry_times" = "$MAX_REQUEST_RETRY_TIMES" ]; then
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_err "Error Azure REST called was retried $MAX_REQUEST_RETRY_TIMES times."
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_err "Calling $ep failed."
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return 1
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fi
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response="$(echo "$response" | _normalizeJson)"
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return 0
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}
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## Ref: https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-protocols-oauth-service-to-service#request-an-access-token
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_azure_getaccess_token() {
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TENANTID=$1
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tenantID=$1
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clientID=$2
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clientSecret=$3
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accesstoken="${AZUREDNS_BEARERTOKEN:-$(_readaccountconf_mutable AZUREDNS_BEARERTOKEN)}"
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expires_on="${AZUREDNS_TOKENVALIDTO:-$(_readaccountconf_mutable AZUREDNS_TOKENVALIDTO)}"
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# can we reuse the bearer token?
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if [ -n "$accesstoken" ] && [ -n "$expires_on" ]; then
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if [ "$(_time)" -lt "$expires_on" ]; then
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# brearer token is still valid - reuse it
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_debug "reusing bearer token"
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printf "%s" "$accesstoken"
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return 0
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else
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_debug "bearer token expired"
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fi
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fi
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_debug "getting new bearer token"
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export _H1="accept: application/json"
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export _H2="Content-Type: application/x-www-form-urlencoded"
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body="resource=$(printf "%s" 'https://management.core.windows.net/' | _url_encode)&client_id=$(printf "%s" "$clientID" | _url_encode)&client_secret=$(printf "%s" "$clientSecret" | _url_encode)&grant_type=client_credentials"
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_debug data "$body"
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response="$(_post "$body" "https://login.windows.net/$TENANTID/oauth2/token" "" "POST")"
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_secure_debug2 "data $body"
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response="$(_post "$body" "https://login.microsoftonline.com/$tenantID/oauth2/token" "" "POST")"
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_secure_debug2 "response $response"
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response="$(echo "$response" | _normalizeJson)"
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accesstoken=$(echo "$response" | _egrep_o "\"access_token\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
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_debug2 "response $response"
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expires_on=$(echo "$response" | _egrep_o "\"expires_on\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
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if [ -z "$accesstoken" ]; then
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_err "no acccess token received"
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_err "no acccess token received. Check your Azure settings see $WIKI"
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return 1
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fi
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if [ "$?" != "0" ]; then
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_err "error $response"
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return 1
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fi
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_saveaccountconf_mutable AZUREDNS_BEARERTOKEN "$accesstoken"
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_saveaccountconf_mutable AZUREDNS_TOKENVALIDTO "$expires_on"
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printf "%s" "$accesstoken"
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return 0
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}
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@ -222,7 +313,6 @@ _get_root() {
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## Per https://docs.microsoft.com/en-us/azure/azure-subscription-service-limits#dns-limits you are limited to 100 Zone/subscriptions anyways
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##
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_azure_rest GET "https://management.azure.com/subscriptions/$subscriptionId/providers/Microsoft.Network/dnszones?api-version=2017-09-01" "" "$accesstoken"
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# Find matching domain name is Json response
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while true; do
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h=$(printf "%s" "$domain" | cut -d . -f $i-100)
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