保存Lego注册信息，避免重复注册导致失败

优化动态加载TLS证书性能

server/dbdata/cert.go

@@ -0,0 +1,119 @@
+package dbdata
+
+import (
+	"crypto"
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+
+	"github.com/go-acme/lego/v4/providers/dns/alidns"
+	"github.com/go-acme/lego/v4/providers/dns/cloudflare"
+	"github.com/go-acme/lego/v4/providers/dns/tencentcloud"
+	"github.com/go-acme/lego/v4/registration"
+	"github.com/xenolf/lego/challenge"
+)
+
+var TLSCert *tls.Certificate
+
+type SettingLetsEncrypt struct {
+	// LegoUser LegoUser
+	Domain   string `json:"domain"`
+	Legomail string `json:"legomail"`
+	Name     string `json:"name"`
+	Renew    bool   `json:"renew"`
+	DNSProvider
+}
+
+type DNSProvider struct {
+	AliYun struct {
+		APIKey    string `json:"apiKey"`
+		SecretKey string `json:"secretKey"`
+	} `json:"aliyun"`
+
+	TXCloud struct {
+		SecretID  string `json:"secretId"`
+		SecretKey string `json:"secretKey"`
+	} `json:"txcloud"`
+	CfCloud struct {
+		AuthEmail string `json:"authEmail"`
+		AuthKey   string `json:"authKey"`
+	} `json:"cfcloud"`
+}
+type LegoUserData struct {
+	Email        string                 `json:"email"`
+	Registration *registration.Resource `json:"registration"`
+	Key          []byte                 `json:"key"`
+}
+type LegoUser struct {
+	Email        string
+	Registration *registration.Resource
+	Key          *ecdsa.PrivateKey
+}
+
+func GetDNSProvider(l *SettingLetsEncrypt) (Provider challenge.Provider, err error) {
+	switch l.Name {
+	case "aliyun":
+		if Provider, err = alidns.NewDNSProviderConfig(&alidns.Config{APIKey: l.DNSProvider.AliYun.APIKey, SecretKey: l.DNSProvider.AliYun.SecretKey, TTL: 600}); err != nil {
+			return
+		}
+	case "txcloud":
+		if Provider, err = tencentcloud.NewDNSProviderConfig(&tencentcloud.Config{SecretID: l.DNSProvider.TXCloud.SecretID, SecretKey: l.DNSProvider.TXCloud.SecretKey, TTL: 600}); err != nil {
+			return
+		}
+	case "cloudflare":
+		if Provider, err = cloudflare.NewDNSProviderConfig(&cloudflare.Config{AuthEmail: l.DNSProvider.CfCloud.AuthEmail, AuthKey: l.DNSProvider.CfCloud.AuthKey, TTL: 600}); err != nil {
+			return
+		}
+	}
+	return
+}
+func (u *LegoUser) GetEmail() string {
+	return u.Email
+}
+func (u LegoUser) GetRegistration() *registration.Resource {
+	return u.Registration
+}
+func (u *LegoUser) GetPrivateKey() crypto.PrivateKey {
+	return u.Key
+}
+
+func (l *LegoUserData) SaveUserData(u *LegoUser) error {
+	key, err := x509.MarshalECPrivateKey(u.Key)
+	if err != nil {
+		return err
+	}
+	l.Email = u.Email
+	l.Registration = u.Registration
+	l.Key = key
+	if err := SettingSet(l); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (l *LegoUserData) GetUserData(d *SettingLetsEncrypt) (*LegoUser, error) {
+	if err := SettingGet(l); err != nil {
+		return nil, err
+	}
+	if l.Email != "" {
+		key, err := x509.ParseECPrivateKey(l.Key)
+		if err != nil {
+			return nil, err
+		}
+		return &LegoUser{
+			Email:        l.Email,
+			Registration: l.Registration,
+			Key:          key,
+		}, nil
+	}
+	privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		return nil, err
+	}
+	return &LegoUser{
+		Email: d.Legomail,
+		Key:   privateKey,
+	}, nil
+}