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Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
SPDX-License-Identifier: MIT-0
"""
from __future__ import annotations
from typing import Any
from cfnlint.jsonschema import Validator
from cfnlint.rules.functions._BaseFn import BaseFn
class Cidr(BaseFn):
"""Check if Cidr values are correct"""
id = "E1024"
shortdesc = "Cidr validation of parameters"
description = "Making sure the function CIDR is a list with valid values"
source_url = "https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-cidr.html"
tags = ["functions", "cidr"]
def __init__(self) -> None:
super().__init__("Fn::Cidr", ("array",), None)
self.fn_cidr = self.validate
def schema(self, validator: Validator, instance: Any) -> dict[str, Any]:
functions = [
"Fn::FindInMap",
"Fn::Select",
"Ref",
"Fn::GetAtt",
"Fn::Sub",
"Fn::ImportValue",
"Fn::If",
]
return {
"type": ["array"],
"maxItems": 3,
"minItems": 2,
"fn_items": [
{
"functions": functions,
"schema": {
"type": ["string"],
"pattern": (
"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.)"
"{3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"
"(\\/([0-9]|[1-2][0-9]|3[0-2]))$"
),
},
},
{
"functions": functions,
"schema": {
"type": ["integer"],
"minimum": 1,
"maximum": 256,
},
},
{
"functions": functions,
"schema": {
"type": ["integer"],
"minimum": 1,
"maximum": 128,
},
},
],
}
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