package cabf_br

/*
 * ZLint Copyright 2020 Regents of the University of Michigan
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

/*******************************************************************************************************
BRs: 7.1.2.3
cRLDistributionPoints
This extension MAY be present. If present, it MUST NOT be marked critical, and it MUST contain the HTTP
URL of the CA’s CRL service.
*******************************************************************************************************/

import (
	"strings"

	"github.com/zmap/zcrypto/x509"
	"github.com/zmap/zlint/v2/lint"
	"github.com/zmap/zlint/v2/util"
)

type subCRLDistNoURL struct{}

func (l *subCRLDistNoURL) Initialize() error {
	return nil
}

func (l *subCRLDistNoURL) CheckApplies(c *x509.Certificate) bool {
	return util.IsExtInCert(c, util.CrlDistOID)
}

func (l *subCRLDistNoURL) Execute(c *x509.Certificate) *lint.LintResult {
	for _, s := range c.CRLDistributionPoints {
		if strings.HasPrefix(s, "http://") {
			return &lint.LintResult{Status: lint.Pass}
		}
	}
	return &lint.LintResult{Status: lint.Error}
}

func init() {
	lint.RegisterLint(&lint.Lint{
		Name:          "e_sub_cert_crl_distribution_points_does_not_contain_url",
		Description:   "Subscriber certificate cRLDistributionPoints extension must contain the HTTP URL of the CA’s CRL service",
		Citation:      "BRs: 7.1.2.3",
		Source:        lint.CABFBaselineRequirements,
		EffectiveDate: util.CABEffectiveDate,
		Lint:          &subCRLDistNoURL{},
	})
}
