github.com/tickoalcantara12/micro/v3@v3.0.0-20221007104245-9d75b9bcbab9/util/acme/autocert/autocert.go (about)

     1  // Copyright 2020 Asim Aslam
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     https://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // Original source: github.com/micro/go-micro/v3/api/server/acme/autocert/autocert.go
    16  
    17  // Package autocert is the ACME provider from golang.org/x/crypto/acme/autocert
    18  // This provider does not take any config.
    19  package autocert
    20  
    21  import (
    22  	"crypto/tls"
    23  	"net"
    24  	"os"
    25  
    26  	"github.com/tickoalcantara12/micro/v3/service/logger"
    27  	"github.com/tickoalcantara12/micro/v3/util/acme"
    28  	"golang.org/x/crypto/acme/autocert"
    29  )
    30  
    31  // autoCertACME is the ACME provider from golang.org/x/crypto/acme/autocert
    32  type autocertProvider struct{}
    33  
    34  // Listen implements acme.Provider
    35  func (a *autocertProvider) Listen(hosts ...string) (net.Listener, error) {
    36  	return autocert.NewListener(hosts...), nil
    37  }
    38  
    39  // TLSConfig returns a new tls config
    40  func (a *autocertProvider) TLSConfig(hosts ...string) (*tls.Config, error) {
    41  	// create a new manager
    42  	m := &autocert.Manager{
    43  		Prompt: autocert.AcceptTOS,
    44  	}
    45  	if len(hosts) > 0 {
    46  		m.HostPolicy = autocert.HostWhitelist(hosts...)
    47  	}
    48  	dir := cacheDir()
    49  	if err := os.MkdirAll(dir, 0700); err != nil {
    50  		if logger.V(logger.InfoLevel, logger.DefaultLogger) {
    51  			logger.Infof("warning: autocert not using a cache: %v", err)
    52  		}
    53  	} else {
    54  		m.Cache = autocert.DirCache(dir)
    55  	}
    56  	return m.TLSConfig(), nil
    57  }
    58  
    59  // New returns an autocert acme.Provider
    60  func NewProvider() acme.Provider {
    61  	return &autocertProvider{}
    62  }