mirror of
https://github.com/ceph/ceph-csi.git
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106 lines
3.5 KiB
Go
106 lines
3.5 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package webhook
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import (
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"fmt"
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"net/url"
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"strings"
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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/apimachinery/pkg/util/validation/field"
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)
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// ValidateWebhookURL validates webhook's URL.
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func ValidateWebhookURL(fldPath *field.Path, URL string, forceHttps bool) field.ErrorList {
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var allErrors field.ErrorList
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const form = "; desired format: https://host[/path]"
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if u, err := url.Parse(URL); err != nil {
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allErrors = append(allErrors, field.Required(fldPath, "url must be a valid URL: "+err.Error()+form))
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} else {
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if forceHttps && u.Scheme != "https" {
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allErrors = append(allErrors, field.Invalid(fldPath, u.Scheme, "'https' is the only allowed URL scheme"+form))
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}
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if len(u.Host) == 0 {
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allErrors = append(allErrors, field.Invalid(fldPath, u.Host, "host must be provided"+form))
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}
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if u.User != nil {
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allErrors = append(allErrors, field.Invalid(fldPath, u.User.String(), "user information is not permitted in the URL"))
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}
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if len(u.Fragment) != 0 {
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allErrors = append(allErrors, field.Invalid(fldPath, u.Fragment, "fragments are not permitted in the URL"))
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}
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if len(u.RawQuery) != 0 {
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allErrors = append(allErrors, field.Invalid(fldPath, u.RawQuery, "query parameters are not permitted in the URL"))
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}
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}
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return allErrors
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}
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func ValidateWebhookService(fldPath *field.Path, namespace, name string, path *string, port int32) field.ErrorList {
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var allErrors field.ErrorList
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if len(name) == 0 {
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allErrors = append(allErrors, field.Required(fldPath.Child("name"), "service name is required"))
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}
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if len(namespace) == 0 {
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allErrors = append(allErrors, field.Required(fldPath.Child("namespace"), "service namespace is required"))
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}
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if errs := validation.IsValidPortNum(int(port)); errs != nil {
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allErrors = append(allErrors, field.Invalid(fldPath.Child("port"), port, "port is not valid: "+strings.Join(errs, ", ")))
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}
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if path == nil {
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return allErrors
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}
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// TODO: replace below with url.Parse + verifying that host is empty?
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urlPath := *path
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if urlPath == "/" || len(urlPath) == 0 {
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return allErrors
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}
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if urlPath == "//" {
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allErrors = append(allErrors, field.Invalid(fldPath.Child("path"), urlPath, "segment[0] may not be empty"))
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return allErrors
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}
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if !strings.HasPrefix(urlPath, "/") {
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allErrors = append(allErrors, field.Invalid(fldPath.Child("path"), urlPath, "must start with a '/'"))
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}
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urlPathToCheck := urlPath[1:]
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if strings.HasSuffix(urlPathToCheck, "/") {
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urlPathToCheck = urlPathToCheck[:len(urlPathToCheck)-1]
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}
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steps := strings.Split(urlPathToCheck, "/")
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for i, step := range steps {
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if len(step) == 0 {
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allErrors = append(allErrors, field.Invalid(fldPath.Child("path"), urlPath, fmt.Sprintf("segment[%d] may not be empty", i)))
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continue
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}
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failures := validation.IsDNS1123Subdomain(step)
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for _, failure := range failures {
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allErrors = append(allErrors, field.Invalid(fldPath.Child("path"), urlPath, fmt.Sprintf("segment[%d]: %v", i, failure)))
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}
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}
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return allErrors
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}
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