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add managed identity support for azure dns

pull/3927/head
michal 3 years ago
committed by neilpang
parent
34bb00450d
commit
7250a300df
1 changed files with 106 additions and 76 deletions
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  1. 62
      dnsapi/dns_azure.sh

62
dnsapi/dns_azure.sh
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@ -9,15 +9,12 @@ WIKI="https://github.com/acmesh-official/acme.sh/wiki/How-to-use-Azure-DNS"
#
# Ref: https://docs.microsoft.com/en-us/rest/api/dns/recordsets/createorupdate
#
dns_azure_add() {
fulldomain=$1
txtvalue=$2
AZUREDNS_SUBSCRIPTIONID="${AZUREDNS_SUBSCRIPTIONID:-$(_readaccountconf_mutable AZUREDNS_SUBSCRIPTIONID)}"
AZUREDNS_TENANTID="${AZUREDNS_TENANTID:-$(_readaccountconf_mutable AZUREDNS_TENANTID)}"
AZUREDNS_APPID="${AZUREDNS_APPID:-$(_readaccountconf_mutable AZUREDNS_APPID)}"
AZUREDNS_CLIENTSECRET="${AZUREDNS_CLIENTSECRET:-$(_readaccountconf_mutable AZUREDNS_CLIENTSECRET)}"
if [ -z "$AZUREDNS_SUBSCRIPTIONID" ]; then
AZUREDNS_SUBSCRIPTIONID=""
AZUREDNS_TENANTID=""
@ -26,6 +23,22 @@ dns_azure_add() {
_err "You didn't specify the Azure Subscription ID"
return 1
fi
#save subscription id to account conf file.
_saveaccountconf_mutable AZUREDNS_SUBSCRIPTIONID "$AZUREDNS_SUBSCRIPTIONID"
AZUREDNS_MANAGEDIDENTITY="${AZUREDNS_MANAGEDIDENTITY:-$(_readaccountconf_mutable AZUREDNS_MANAGEDIDENTITY)}"
if [ "$AZUREDNS_MANAGEDIDENTITY" = true ]; then
_info "Using Azure managed identity"
#save managed identity as preferred authentication method, clear service principal credentials from conf file.
_saveaccountconf_mutable AZUREDNS_MANAGEDIDENTITY "$AZUREDNS_MANAGEDIDENTITY"
_saveaccountconf_mutable AZUREDNS_TENANTID ""
_saveaccountconf_mutable AZUREDNS_APPID ""
_saveaccountconf_mutable AZUREDNS_CLIENTSECRET ""
else
_info "You didn't ask to use Azure managed identity, checking service principal credentials"
AZUREDNS_TENANTID="${AZUREDNS_TENANTID:-$(_readaccountconf_mutable AZUREDNS_TENANTID)}"
AZUREDNS_APPID="${AZUREDNS_APPID:-$(_readaccountconf_mutable AZUREDNS_APPID)}"
AZUREDNS_CLIENTSECRET="${AZUREDNS_CLIENTSECRET:-$(_readaccountconf_mutable AZUREDNS_CLIENTSECRET)}"
if [ -z "$AZUREDNS_TENANTID" ]; then
AZUREDNS_SUBSCRIPTIONID=""
@ -53,13 +66,15 @@ dns_azure_add() {
_err "You didn't specify the Azure Client Secret"
return 1
fi
#save account details to account conf file.
_saveaccountconf_mutable AZUREDNS_SUBSCRIPTIONID "$AZUREDNS_SUBSCRIPTIONID"
#save account details to account conf file, don't opt in for azure manages identity check.
_saveaccountconf_mutable AZUREDNS_MANAGEDIDENTITY "false"
_saveaccountconf_mutable AZUREDNS_TENANTID "$AZUREDNS_TENANTID"
_saveaccountconf_mutable AZUREDNS_APPID "$AZUREDNS_APPID"
_saveaccountconf_mutable AZUREDNS_CLIENTSECRET "$AZUREDNS_CLIENTSECRET"
fi
accesstoken=$(_azure_getaccess_token "$AZUREDNS_TENANTID" "$AZUREDNS_APPID" "$AZUREDNS_CLIENTSECRET")
accesstoken=$(_azure_getaccess_token "$AZUREDNS_MANAGEDIDENTITY" "$AZUREDNS_TENANTID" "$AZUREDNS_APPID" "$AZUREDNS_CLIENTSECRET")
if ! _get_root "$fulldomain" "$AZUREDNS_SUBSCRIPTIONID" "$accesstoken"; then
_err "invalid domain"
@ -116,10 +131,6 @@ dns_azure_rm() {
txtvalue=$2
AZUREDNS_SUBSCRIPTIONID="${AZUREDNS_SUBSCRIPTIONID:-$(_readaccountconf_mutable AZUREDNS_SUBSCRIPTIONID)}"
AZUREDNS_TENANTID="${AZUREDNS_TENANTID:-$(_readaccountconf_mutable AZUREDNS_TENANTID)}"
AZUREDNS_APPID="${AZUREDNS_APPID:-$(_readaccountconf_mutable AZUREDNS_APPID)}"
AZUREDNS_CLIENTSECRET="${AZUREDNS_CLIENTSECRET:-$(_readaccountconf_mutable AZUREDNS_CLIENTSECRET)}"
if [ -z "$AZUREDNS_SUBSCRIPTIONID" ]; then
AZUREDNS_SUBSCRIPTIONID=""
AZUREDNS_TENANTID=""
@ -129,6 +140,15 @@ dns_azure_rm() {
return 1
fi
AZUREDNS_MANAGEDIDENTITY="${AZUREDNS_MANAGEDIDENTITY:-$(_readaccountconf_mutable AZUREDNS_MANAGEDIDENTITY)}"
if [ "$AZUREDNS_MANAGEDIDENTITY" = true ]; then
_info "Using Azure managed identity"
else
_info "You didn't ask to use Azure managed identity, checking service principal credentials"
AZUREDNS_TENANTID="${AZUREDNS_TENANTID:-$(_readaccountconf_mutable AZUREDNS_TENANTID)}"
AZUREDNS_APPID="${AZUREDNS_APPID:-$(_readaccountconf_mutable AZUREDNS_APPID)}"
AZUREDNS_CLIENTSECRET="${AZUREDNS_CLIENTSECRET:-$(_readaccountconf_mutable AZUREDNS_CLIENTSECRET)}"
if [ -z "$AZUREDNS_TENANTID" ]; then
AZUREDNS_SUBSCRIPTIONID=""
AZUREDNS_TENANTID=""
@ -155,8 +175,9 @@ dns_azure_rm() {
_err "You didn't specify the Azure Client Secret"
return 1
fi
fi
accesstoken=$(_azure_getaccess_token "$AZUREDNS_TENANTID" "$AZUREDNS_APPID" "$AZUREDNS_CLIENTSECRET")
accesstoken=$(_azure_getaccess_token "$AZUREDNS_MANAGEDIDENTITY" "$AZUREDNS_TENANTID" "$AZUREDNS_APPID" "$AZUREDNS_CLIENTSECRET")
if ! _get_root "$fulldomain" "$AZUREDNS_SUBSCRIPTIONID" "$accesstoken"; then
_err "invalid domain"
@ -258,9 +279,10 @@ _azure_rest() {
## Ref: https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-protocols-oauth-service-to-service#request-an-access-token
_azure_getaccess_token() {
tenantID=$1
clientID=$2
clientSecret=$3
managedIdentity=$1
tenantID=$2
clientID=$3
clientSecret=$4
accesstoken="${AZUREDNS_BEARERTOKEN:-$(_readaccountconf_mutable AZUREDNS_BEARERTOKEN)}"
expires_on="${AZUREDNS_TOKENVALIDTO:-$(_readaccountconf_mutable AZUREDNS_TOKENVALIDTO)}"
@ -278,9 +300,16 @@ _azure_getaccess_token() {
fi
_debug "getting new bearer token"
if [ "$managedIdentity" = true ]; then
# https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/how-to-use-vm-token#get-a-token-using-http
export _H1="Metadata: true"
response="$(_get http://169.254.169.254/metadata/identity/oauth2/token\?api-version=2018-02-01\&resource=https://management.azure.com/)"
response="$(echo "$response" | _normalizeJson)"
accesstoken=$(echo "$response" | _egrep_o "\"access_token\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
expires_on=$(echo "$response" | _egrep_o "\"expires_on\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
else
export _H1="accept: application/json"
export _H2="Content-Type: application/x-www-form-urlencoded"
body="resource=$(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"
_secure_debug2 "data $body"
response="$(_post "$body" "https://login.microsoftonline.com/$tenantID/oauth2/token" "" "POST")"
@ -289,6 +318,7 @@ _azure_getaccess_token() {
response="$(echo "$response" | _normalizeJson)"
accesstoken=$(echo "$response" | _egrep_o "\"access_token\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
expires_on=$(echo "$response" | _egrep_o "\"expires_on\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
fi
if [ -z "$accesstoken" ]; then
_err "no acccess token received. Check your Azure settings see $WIKI"

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