fix: update Exoscale DNS script

This updates the Exoscale DNS script to work with v2 of their API.

Author: imiric

dnsapi/dns_exoscale.sh

@@ -8,169 +8,207 @@ Options:
  EXOSCALE_SECRET_KEY API Secret key
 '
 
-EXOSCALE_API=https://api.exoscale.com/dns/v1
+EXOSCALE_API="https://api-ch-gva-2.exoscale.com/v2"
 
-########  Public functions #####################
+########  Public functions  ########
 
 # Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
 # Used to add txt record
 dns_exoscale_add() {
   fulldomain=$1
   txtvalue=$2
 
-  if ! _checkAuth; then
+  _debug "Using Exoscale DNS v2 API"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if ! _check_auth; then
     return 1
   fi
 
-  _debug "First detect the root zone"
-  if ! _get_root "$fulldomain"; then
-    _err "invalid domain"
+  root_domain_id=$(_get_root_domain_id "$fulldomain")
+  if [ -z "$root_domain_id" ]; then
+    _err "Unable to determine root domain ID for $fulldomain"
     return 1
   fi
+  _debug root_domain_id "$root_domain_id"
 
-  _debug _sub_domain "$_sub_domain"
-  _debug _domain "$_domain"
+  # Always get the subdomain part first
+  sub_domain=$(_get_sub_domain "$fulldomain" "$root_domain_id")
+  _debug sub_domain "$sub_domain"
 
-  _info "Adding record"
-  if _exoscale_rest POST "domains/$_domain_id/records" "{\"record\":{\"name\":\"$_sub_domain\",\"record_type\":\"TXT\",\"content\":\"$txtvalue\",\"ttl\":120}}" "$_domain_token"; then
-    if _contains "$response" "$txtvalue"; then
-      _info "Added, OK"
-      return 0
-    fi
+  # Build the record name properly
+  if [ -z "$sub_domain" ]; then
+    record_name="_acme-challenge"
+  else
+    record_name="_acme-challenge.$sub_domain"
   fi
-  _err "Add txt record error."
-  return 1
 
+  payload=$(printf '{"name":"%s","type":"TXT","content":"%s","ttl":120}' "$record_name" "$txtvalue")
+  _debug payload "$payload"
+
+  response=$(_exoscale_rest POST "/dns-domain/${root_domain_id}/record" "$payload")
+  if _contains "$response" "\"id\""; then
+    _info "TXT record added successfully."
+    return 0
+  else
+    _err "Error adding TXT record: $response"
+    return 1
+  fi
 }
 
-# Usage: fulldomain txtvalue
-# Used to remove the txt record after validation
 dns_exoscale_rm() {
   fulldomain=$1
-  txtvalue=$2
 
-  if ! _checkAuth; then
+  _debug "Using Exoscale DNS v2 API for removal"
+  _debug fulldomain "$fulldomain"
+
+  if ! _check_auth; then
     return 1
   fi
 
-  _debug "First detect the root zone"
-  if ! _get_root "$fulldomain"; then
-    _err "invalid domain"
+  root_domain_id=$(_get_root_domain_id "$fulldomain")
+  if [ -z "$root_domain_id" ]; then
+    _err "Unable to determine root domain ID for $fulldomain"
     return 1
   fi
 
-  _debug _sub_domain "$_sub_domain"
-  _debug _domain "$_domain"
-
-  _debug "Getting txt records"
-  _exoscale_rest GET "domains/${_domain_id}/records?type=TXT&name=$_sub_domain" "" "$_domain_token"
-  if _contains "$response" "\"name\":\"$_sub_domain\"" >/dev/null; then
-    _record_id=$(echo "$response" | tr '{' "\n" | grep "\"content\":\"$txtvalue\"" | _egrep_o "\"id\":[^,]+" | _head_n 1 | cut -d : -f 2 | tr -d \")
+  record_name="_acme-challenge"
+  sub_domain=$(_get_sub_domain "$fulldomain" "$root_domain_id")
+  if [ -n "$sub_domain" ]; then
+    record_name="_acme-challenge.$sub_domain"
   fi
 
-  if [ -z "$_record_id" ]; then
-    _err "Can not get record id to remove."
+  record_id=$(_find_record_id "$root_domain_id" "$record_name")
+  if [ -z "$record_id" ]; then
+    _err "TXT record not found for deletion."
     return 1
   fi
 
-  _debug "Deleting record $_record_id"
-
-  if ! _exoscale_rest DELETE "domains/$_domain_id/records/$_record_id" "" "$_domain_token"; then
-    _err "Delete record error."
+  response=$(_exoscale_rest DELETE "/dns-domain/$root_domain_id/record/$record_id")
+  if _contains "$response" "\"state\":\"success\""; then
+    _info "TXT record deleted successfully."
+    return 0
+  else
+    _err "Error deleting TXT record: $response"
     return 1
   fi
-
-  return 0
 }
 
-####################  Private functions below ##################################
+########  Private helpers  ########
 
-_checkAuth() {
+_check_auth() {
   EXOSCALE_API_KEY="${EXOSCALE_API_KEY:-$(_readaccountconf_mutable EXOSCALE_API_KEY)}"
   EXOSCALE_SECRET_KEY="${EXOSCALE_SECRET_KEY:-$(_readaccountconf_mutable EXOSCALE_SECRET_KEY)}"
-
   if [ -z "$EXOSCALE_API_KEY" ] || [ -z "$EXOSCALE_SECRET_KEY" ]; then
-    EXOSCALE_API_KEY=""
-    EXOSCALE_SECRET_KEY=""
-    _err "You don't specify Exoscale application key and application secret yet."
-    _err "Please create you key and try again."
+    _err "EXOSCALE_API_KEY and EXOSCALE_SECRET_KEY must be set."
     return 1
   fi
-
   _saveaccountconf_mutable EXOSCALE_API_KEY "$EXOSCALE_API_KEY"
   _saveaccountconf_mutable EXOSCALE_SECRET_KEY "$EXOSCALE_SECRET_KEY"
-
   return 0
 }
 
-#_acme-challenge.www.domain.com
-#returns
-# _sub_domain=_acme-challenge.www
-# _domain=domain.com
-# _domain_id=sdjkglgdfewsdfg
-# _domain_token=sdjkglgdfewsdfg
-_get_root() {
-
-  if ! _exoscale_rest GET "domains"; then
-    return 1
-  fi
-
+_get_root_domain_id() {
   domain=$1
-  i=2
-  p=1
+  i=1
   while true; do
-    h=$(printf "%s" "$domain" | cut -d . -f "$i"-100)
-    _debug h "$h"
-    if [ -z "$h" ]; then
-      #not valid
-      return 1
-    fi
-
-    if _contains "$response" "\"name\":\"$h\"" >/dev/null; then
-      _domain_id=$(echo "$response" | tr '{' "\n" | grep "\"name\":\"$h\"" | _egrep_o "\"id\":[^,]+" | _head_n 1 | cut -d : -f 2 | tr -d \")
-      _domain_token=$(echo "$response" | tr '{' "\n" | grep "\"name\":\"$h\"" | _egrep_o "\"token\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
-      if [ "$_domain_token" ] && [ "$_domain_id" ]; then
-        _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-"$p")
-        _domain=$h
-        return 0
+    candidate=$(printf "%s" "$domain" | cut -d . -f "${i}-100")
+    [ -z "$candidate" ] && return 1
+    _debug "Trying root domain candidate: $candidate"
+    domains=$(_exoscale_rest GET "/dns-domain")
+    # Extract from dns-domains array
+    result=$(echo "$domains" | _egrep_o '"dns-domains":\[.*\]' | _egrep_o '\{"id":"[^"]*","created-at":"[^"]*","unicode-name":"[^"]*"\}' | while read -r item; do
+      name=$(echo "$item" | _egrep_o '"unicode-name":"[^"]*"' | cut -d'"' -f4)
+      id=$(echo "$item" | _egrep_o '"id":"[^"]*"' | cut -d'"' -f4)
+      if [ "$name" = "$candidate" ]; then
+        echo "$id"
+        break
       fi
-      return 1
+    done)
+    if [ -n "$result" ]; then
+      echo "$result"
+      return 0
     fi
-    p=$i
     i=$(_math "$i" + 1)
   done
-  return 1
 }
 
-# returns response
+_get_sub_domain() {
+  fulldomain=$1
+  root_id=$2
+  root_info=$(_exoscale_rest GET "/dns-domain/$root_id")
+  _debug root_info "$root_info"
+  root_name=$(echo "$root_info" | _egrep_o "\"unicode-name\":\"[^\"]*\"" | cut -d\" -f4)
+  sub=${fulldomain%%."$root_name"}
+
+  if [ "$sub" = "_acme-challenge" ]; then
+    echo ""
+  else
+    # Remove _acme-challenge. prefix to get the actual subdomain
+    echo "${sub#_acme-challenge.}"
+  fi
+}
+
+_find_record_id() {
+  root_id=$1
+  name=$2
+  records=$(_exoscale_rest GET "/dns-domain/$root_id/record")
+
+  # Convert search name to lowercase for case-insensitive matching
+  name_lower=$(echo "$name" | tr '[:upper:]' '[:lower:]')
+
+  echo "$records" | _egrep_o '\{[^}]*"name":"[^"]*"[^}]*\}' | while read -r record; do
+    record_name=$(echo "$record" | _egrep_o '"name":"[^"]*"' | cut -d'"' -f4)
+    record_name_lower=$(echo "$record_name" | tr '[:upper:]' '[:lower:]')
+    if [ "$record_name_lower" = "$name_lower" ]; then
+      echo "$record" | _egrep_o '"id":"[^"]*"' | _head_n 1 | cut -d'"' -f4
+      break
+    fi
+  done
+}
+
+_exoscale_sign() {
+  k=$1
+  shift
+  hex_key=$(printf %b "$k" | _hex_dump | tr -d ' ')
+  printf %b "$@" | _hmac sha256 "$hex_key" hex
+}
+
 _exoscale_rest() {
   method=$1
-  path="$2"
-  data="$3"
-  token="$4"
-  request_url="$EXOSCALE_API/$path"
-  _debug "$path"
+  path=$2
+  data=$3
 
-  export _H1="Accept: application/json"
+  url="${EXOSCALE_API}${path}"
+  expiration=$(_math "$(date +%s)" + 300) # 5m from now
 
-  if [ "$token" ]; then
-    export _H2="X-DNS-Domain-Token: $token"
-  else
-    export _H2="X-DNS-Token: $EXOSCALE_API_KEY:$EXOSCALE_SECRET_KEY"
-  fi
+  # Build the message with the actual body or empty line
+  message=$(printf "%s %s\n%s\n\n\n%s" "$method" "/v2$path" "$data" "$expiration")
+  signature=$(_exoscale_sign "$EXOSCALE_SECRET_KEY" "$message" | _base64)
+  auth="EXO2-HMAC-SHA256 credential=${EXOSCALE_API_KEY},expires=${expiration},signature=${signature}"
+
+  _debug "API request: $method $url"
+  _debug "Signed message: [$message]"
+  _debug "Authorization header: [$auth]"
+
+  export _H1="Accept: application/json"
+  export _H2="Authorization: ${auth}"
 
   if [ "$data" ] || [ "$method" = "DELETE" ]; then
     export _H3="Content-Type: application/json"
     _debug data "$data"
-    response="$(_post "$data" "$request_url" "" "$method")"
+    response="$(_post "$data" "$url" "" "$method")"
   else
-    response="$(_get "$request_url" "" "" "$method")"
+    response="$(_get "$url" "" "" "$method")"
   fi
 
-  if [ "$?" != "0" ]; then
-    _err "error $request_url"
+  # shellcheck disable=SC2181
+  if [ "$?" -ne 0 ]; then
+    _err "error $url"
     return 1
   fi
   _debug2 response "$response"
+  echo "$response"
   return 0
 }