change password Core

configure.d/lib/nextcloud.sh

@@ -31,3 +31,18 @@ nextcloud_revoke_app_password() {
   auth_header "$CORE_USER" "$1" | curl -sf -o /dev/null -X DELETE -H @- \
     -H 'OCS-APIRequest: true' "$NEXTCLOUD/ocs/v2.php/core/apppassword"
 }
+
+# Sign in to Nextcloud as CORE_USER with a password ($1), or PASSWORD if not
+# given. Signing in with your Core password (not an app password) also turns
+# back on the app passwords Nextcloud turned off when the Core password
+# changed. Uses NEXTCLOUD. Returns 2 if Nextcloud says the password is wrong.
+nextcloud_sign_in() {
+  local code
+  code="$(auth_header "$CORE_USER" "${1:-$PASSWORD}" | curl -s -o /dev/null -w '%{http_code}' -H @- \
+    -H 'OCS-APIRequest: true' "$NEXTCLOUD/ocs/v2.php/cloud/user?format=json")"
+  case "$code" in
+    200) return 0 ;;
+    401) return 2 ;;
+    *) return 1 ;;
+  esac
+}