fix getroot with multiple dns zones

dnsapi/dns_azure.sh

@@ -1,9 +1,8 @@
 #!/usr/bin/env sh
 
-
 ########  Public functions #####################
 
- # Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+# Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
 # Used to add txt record
 #
 # Ref: https://docs.microsoft.com/en-us/rest/api/dns/recordsets/createorupdate
@@ -225,7 +224,7 @@ _get_root() {
       fi
 
     if _contains "$response" "\"name\":\"$h\"" >/dev/null; then
-      _domain_id=$(printf "%s\n" "$response" | _egrep_o "\[.\"id\":\"[^\"]*\"" | head -n 1 | cut -d : -f 2 | tr -d \")
+      _domain_id=$(printf "%s\n" "$response" | _egrep_o "\{\"id\":\"[^\"]*$h\"" | head -n 1 | cut -d : -f 2 | tr -d \")
       if [ "$_domain_id" ]; then
         _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
         _domain=$h
@@ -238,4 +237,3 @@ _get_root() {
    done
    return 1
 }
-