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This patch tries two approaches: 1. Using a common util function generate the TLS Options 2. Using a local method to generate the TLS Options. Signed-off-by: Sagar Muchhal <muchhals@vmware.com>
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| /* | ||
| Copyright 2022 The Kubernetes Authors. | ||
| 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. | ||
| */ | ||
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| // Package flags implements the webhook server TLS options utilities. | ||
| package flags | ||
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| import ( | ||
| "crypto/tls" | ||
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| cliflag "k8s.io/component-base/cli/flag" | ||
| ) | ||
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| // CalculateTLSOpts returns a list of TLS configuration overrides | ||
| // to be used when setting the webhook server. | ||
| func CalculateTLSOpts(tlsMinVersion string, tlsCipherSuites []string) ([]func(*tls.Config), error) { | ||
| var tlsOptions []func(config *tls.Config) | ||
| tlsVersion, err := cliflag.TLSVersion(tlsMinVersion) | ||
| if err != nil { | ||
| return tlsOptions, err | ||
| } | ||
| tlsOptions = append(tlsOptions, func(cfg *tls.Config) { | ||
| cfg.MinVersion = tlsVersion | ||
| }) | ||
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| if len(tlsCipherSuites) != 0 { | ||
| suites, err := cliflag.TLSCipherSuites(tlsCipherSuites) | ||
| if err != nil { | ||
| return tlsOptions, err | ||
| } | ||
| tlsOptions = append(tlsOptions, func(cfg *tls.Config) { | ||
| cfg.CipherSuites = suites | ||
| }) | ||
| } | ||
| return tlsOptions, nil | ||
| } |