90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
package acme
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import (
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"context"
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"crypto"
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"github.com/go-acme/lego/v4/certcrypto"
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"github.com/go-acme/lego/v4/registration"
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"github.com/traefik/traefik/v2/pkg/log"
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)
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// Account is used to store lets encrypt registration info.
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type Account struct {
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Email string
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Registration *registration.Resource
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PrivateKey []byte
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KeyType certcrypto.KeyType
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}
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const (
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// RegistrationURLPathV1Regexp is a regexp which match ACME registration URL in the V1 format.
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RegistrationURLPathV1Regexp = `^.*/acme/reg/\d+$`
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)
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// NewAccount creates an account.
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func NewAccount(ctx context.Context, email, keyTypeValue string) (*Account, error) {
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keyType := GetKeyType(ctx, keyTypeValue)
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// Create a user. New accounts need an email and private key to start
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privateKey, err := rsa.GenerateKey(rand.Reader, 4096)
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if err != nil {
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return nil, err
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}
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return &Account{
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Email: email,
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PrivateKey: x509.MarshalPKCS1PrivateKey(privateKey),
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KeyType: keyType,
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}, nil
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}
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// GetEmail returns email.
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func (a *Account) GetEmail() string {
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return a.Email
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}
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// GetRegistration returns lets encrypt registration resource.
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func (a *Account) GetRegistration() *registration.Resource {
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return a.Registration
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}
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// GetPrivateKey returns private key.
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func (a *Account) GetPrivateKey() crypto.PrivateKey {
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privateKey, err := x509.ParsePKCS1PrivateKey(a.PrivateKey)
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if err != nil {
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log.WithoutContext().WithField(log.ProviderName, "acme").
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Errorf("Cannot unmarshal private key %+v: %v", a.PrivateKey, err)
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return nil
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}
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return privateKey
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}
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// GetKeyType used to determine which algo to used.
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func GetKeyType(ctx context.Context, value string) certcrypto.KeyType {
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logger := log.FromContext(ctx)
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switch value {
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case "EC256":
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return certcrypto.EC256
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case "EC384":
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return certcrypto.EC384
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case "RSA2048":
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return certcrypto.RSA2048
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case "RSA4096":
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return certcrypto.RSA4096
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case "RSA8192":
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return certcrypto.RSA8192
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case "":
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logger.Infof("The key type is empty. Use default key type %v.", certcrypto.RSA4096)
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return certcrypto.RSA4096
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default:
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logger.Infof("Unable to determine the key type value %q: falling back on %v.", value, certcrypto.RSA4096)
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return certcrypto.RSA4096
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}
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}
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