622 lines
18 KiB
Go
622 lines
18 KiB
Go
package ssl
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import (
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"crypto"
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"crypto/ecdsa"
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"crypto/rsa"
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"crypto/tls"
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"crypto/x509"
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stderrors "errors"
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"git.pcux.cn/xuans/Smail/config"
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"git.pcux.cn/xuans/Smail/services/setup"
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"git.pcux.cn/xuans/Smail/signal"
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"git.pcux.cn/xuans/Smail/utils/async"
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"git.pcux.cn/xuans/Smail/utils/errors"
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"git.pcux.cn/xuans/Smail/utils/runtimepath"
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"github.com/go-acme/lego/v4/certificate"
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"github.com/go-acme/lego/v4/challenge/dns01"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/cast"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"time"
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"github.com/go-acme/lego/v4/certcrypto"
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"github.com/go-acme/lego/v4/lego"
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"github.com/go-acme/lego/v4/registration"
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)
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type MyUser struct {
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Email string
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Registration *registration.Resource
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key crypto.PrivateKey
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}
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type userCertificateError struct {
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message string
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}
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func (e *userCertificateError) Error() string {
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return e.message
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}
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func newUserCertificateError(message string) error {
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return &userCertificateError{message: message}
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}
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// UserCertificateErrorMessage 只返回可以安全展示给初始化页面的证书错误。
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func UserCertificateErrorMessage(err error) string {
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var certificateError *userCertificateError
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if stderrors.As(err, &certificateError) {
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return certificateError.message
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}
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return ""
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}
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func normalizeUserCertificateImportError(err error) error {
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switch {
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case stderrors.Is(err, config.ErrSSLCertificateMismatch):
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return newUserCertificateError("SSL 证书与私钥不匹配")
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case stderrors.Is(err, config.ErrSSLCertificateDomain):
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return newUserCertificateError("SSL 证书与已配置域名不匹配，请检查主域名、Web 域名和附加域名")
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case stderrors.Is(err, config.ErrSSLCertificateExpired):
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return newUserCertificateError("SSL 证书无效、尚未生效或已经过期")
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case stderrors.Is(err, config.ErrSSLPrivateKeyPermission):
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return newUserCertificateError("SSL 私钥权限过于宽松，请限制为仅 Smail 运行用户可读取")
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case stderrors.Is(err, config.ErrInvalidSSLMaterial), stderrors.Is(err, config.ErrUnsafeSSLFile):
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return newUserCertificateError("SSL 证书或私钥文件无效")
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default:
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return err
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}
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}
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func (u *MyUser) GetEmail() string {
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return u.Email
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}
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func (u MyUser) GetRegistration() *registration.Resource {
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return u.Registration
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}
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func (u *MyUser) GetPrivateKey() crypto.PrivateKey {
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return u.key
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}
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func GetSSL() (string, error) {
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cfg, err := config.ReadConfig()
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if err != nil {
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return "", errors.Wrap(err)
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}
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if cfg.UsesProxyHTTPS() {
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return config.SSLTypeUser, nil
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}
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if cfg.SSLType == "" {
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return config.SSLTypeAutoHTTP, nil
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}
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return cfg.SSLType, nil
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}
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func SetSSL(sslType, priKey, crtKey string) error {
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cfg, err := config.ReadConfig()
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if err != nil {
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return errors.Wrap(err)
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}
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expected := *cfg
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if sslType == config.SSLTypeAutoHTTP || sslType == config.SSLTypeUser || sslType == config.SSLTypeAutoDNS {
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cfg.SSLType = sslType
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} else {
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return errors.New("SSL 类型错误")
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}
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if cfg.UsesProxyHTTPS() && cfg.SSLType != config.SSLTypeUser {
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return newUserCertificateError("HTTPS 反代模式由反向代理管理证书，Smail 不自动申请或续期；邮件服务请导入外部维护的证书")
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}
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if cfg.SSLType != config.SSLTypeUser {
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clearLegacySSLPaths(cfg)
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cfg.SSL = config.SSLConfig{
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Management: config.SSLManagementProject,
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Mode: config.ManagedSSLModeDefault,
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DefaultDirectory: runtimepath.SSLReference(config.ROOT_PATH, "data/ssl"),
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}
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if cfg.SSLType == config.SSLTypeAutoDNS {
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cfg.SSL.Challenge = config.SSLChallengeDNS
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if err := validateWildcardConfiguration(cfg); err != nil {
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return err
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}
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} else {
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cfg.SSL.Challenge = config.SSLChallengeHTTP
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}
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}
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if cfg.SSLType == config.SSLTypeUser {
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if cfg.UsesProxyHTTPS() {
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cfg.SSL.Management = config.SSLManagementWebServer
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} else {
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cfg.SSL.Management = config.SSLManagementCustom
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}
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privatePath, publicPath, err := validateUserCertificatePaths(priKey, crtKey)
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if err != nil {
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return err
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}
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privatePEM, err := os.ReadFile(privatePath)
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if err != nil {
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return newUserCertificateError("SSL 私钥无法读取，请确认文件路径和 smail 用户权限")
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}
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publicPEM, err := os.ReadFile(publicPath)
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if err != nil {
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return newUserCertificateError("SSL 证书无法读取，请确认文件路径和 smail 用户权限")
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}
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reference, err := config.StageManagedSSL(config.ManagedSSLModeUpload, privatePEM, publicPEM, nil, sslDomains(cfg))
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if err != nil {
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return normalizeUserCertificateImportError(err)
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}
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applyManagedSSLReference(cfg, reference)
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// 导入邮件服务证书不能重新启用反代模式下的内置 HTTPS。
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if cfg.UsesProxyHTTPS() {
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cfg.HttpsEnabled = 2
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} else {
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cfg.HttpsEnabled = 1
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}
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}
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err = config.WriteSSLConfig(&expected, cfg)
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if err != nil {
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return errors.Wrap(err)
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}
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return nil
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}
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// clearLegacySSLPaths 只清理新受控模式不再使用的旧聚合路径字段。
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func clearLegacySSLPaths(cfg *config.Config) {
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if cfg == nil {
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return
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}
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cfg.SSLPrivateKeyPath = ""
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cfg.SSLPublicKeyPath = ""
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}
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// applyManagedSSLReference 将证书切换结果写入内部引用，不持久化服务器路径。
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func applyManagedSSLReference(cfg *config.Config, reference config.ManagedSSLReference) {
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if cfg == nil {
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return
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}
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clearLegacySSLPaths(cfg)
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management := cfg.SSL.Management
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if reference.Mode == config.ManagedSSLModeDefault {
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management = config.SSLManagementProject
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} else if !config.ValidSSLManagement(management) || management == config.SSLManagementProject {
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management = config.SSLManagementCustom
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}
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cfg.SSL = config.SSLConfig{
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Management: management,
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Mode: reference.Mode,
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DefaultDirectory: runtimepath.SSLReference(config.ROOT_PATH, "data/ssl"),
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CertificateRef: reference.CertificateRef,
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PrivateKeyRef: reference.PrivateKeyRef,
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}
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if reference.Mode == config.ManagedSSLModeUpload {
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cfg.SSL.CustomDirectory = runtimepath.SSLReference(config.ROOT_PATH, "data/ssl/managed/upload")
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} else if cfg.SSLType == config.SSLTypeAutoDNS {
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cfg.SSL.Challenge = config.SSLChallengeDNS
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} else {
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cfg.SSL.Challenge = config.SSLChallengeHTTP
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}
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}
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func isAbsoluteUserCertificatePath(value string) bool {
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value = strings.TrimSpace(value)
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if value == "" {
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return false
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}
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if filepath.IsAbs(value) {
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return true
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}
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volume := filepath.VolumeName(value)
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return volume != "" || strings.HasPrefix(value, `\\`) || strings.HasPrefix(value, "//")
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}
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func validateUserCertificatePaths(privatePath, publicPath string) (string, string, error) {
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rootPath, err := filepath.Abs(filepath.Clean(config.ROOT_PATH))
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if err != nil {
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return "", "", err
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}
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resolve := func(value string) (string, []byte, error) {
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if strings.TrimSpace(value) == "" {
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return "", nil, newUserCertificateError("请填写 SSL 证书和私钥路径")
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}
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path := strings.TrimSpace(value)
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if isAbsoluteUserCertificatePath(path) {
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if filepath.VolumeName(path) != "" && !filepath.IsAbs(path) {
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return "", nil, newUserCertificateError("SSL 路径必须是完整的绝对路径")
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}
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} else {
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path = filepath.Join(rootPath, path)
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}
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path, err = filepath.Abs(filepath.Clean(path))
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if err != nil {
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return "", nil, err
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}
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info, err := os.Stat(path)
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if err != nil {
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return "", nil, newUserCertificateError("SSL 文件不存在或无权读取")
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}
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if !info.Mode().IsRegular() || info.Size() <= 0 || info.Size() > 1<<20 {
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return "", nil, newUserCertificateError("SSL 文件无效或大小超过限制")
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}
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content, err := os.ReadFile(path)
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if err != nil || len(content) == 0 || len(content) > 1<<20 {
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return "", nil, newUserCertificateError("SSL 文件读取失败或内容无效")
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}
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return path, content, nil
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}
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privatePath, privatePEM, err := resolve(privatePath)
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if err != nil {
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return "", "", err
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}
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publicPath, publicPEM, err := resolve(publicPath)
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if err != nil {
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return "", "", err
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}
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keyPair, err := tls.X509KeyPair(publicPEM, privatePEM)
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if err != nil || len(keyPair.Certificate) == 0 {
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return "", "", newUserCertificateError("SSL 证书与私钥不匹配")
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}
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certificate, err := x509.ParseCertificate(keyPair.Certificate[0])
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if err != nil || time.Now().Before(certificate.NotBefore) || !time.Now().Before(certificate.NotAfter) {
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return "", "", newUserCertificateError("SSL 证书无效、尚未生效或已经过期")
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}
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switch publicKey := certificate.PublicKey.(type) {
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case *rsa.PublicKey:
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if publicKey.N.BitLen() < 2048 {
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return "", "", newUserCertificateError("SSL 证书密钥强度不能低于 2048 位")
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}
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case *ecdsa.PublicKey:
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if publicKey.Curve == nil || publicKey.Curve.Params().BitSize < 256 {
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return "", "", newUserCertificateError("SSL 证书密钥强度不能低于 256 位 ECDSA")
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}
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default:
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return "", "", newUserCertificateError("不支持当前 SSL 证书密钥类型")
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}
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privateInfo, err := os.Stat(privatePath)
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if err != nil {
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return "", "", newUserCertificateError("SSL 私钥不存在或无权读取")
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}
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if runtime.GOOS != "windows" && privateInfo.Mode().Perm()&0007 != 0 {
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return "", "", newUserCertificateError("SSL 私钥不能允许其他用户读取或写入")
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}
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return privatePath, publicPath, nil
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}
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func writeCertificateFiles(cfg *config.Config, privateKey, certificate, issuer []byte) error {
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if cfg == nil {
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return errors.New("SSL 配置不能为空")
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}
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if err := validateWildcardConfiguration(cfg); err != nil {
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return err
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}
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next := *cfg
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reference, err := config.StageManagedSSL(config.ManagedSSLModeDefault, privateKey, certificate, issuer, certificateDomains(cfg))
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if err != nil {
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return err
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}
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applyManagedSSLReference(&next, reference)
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if err := config.WriteSSLConfig(cfg, &next); err != nil {
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return errors.Wrap(err)
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}
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*cfg = next
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return nil
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}
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func sslDomains(cfg *config.Config) []string {
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if cfg == nil {
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return nil
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}
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return config.SSLCertificateDomains(cfg.Domain, cfg.WebDomain, cfg.Domains)
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}
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func certificateMatchesConfiguredDomains(cert *x509.Certificate, cfg *config.Config) bool {
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if cert == nil || cfg == nil {
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return false
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}
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if validateWildcardConfiguration(cfg) != nil {
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return false
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}
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for _, domain := range certificateDomains(cfg) {
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if err := cert.VerifyHostname(domain); err != nil {
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return false
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}
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}
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return true
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}
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// 自动 DNS 只申请主域泛域名；不覆盖的服务地址是配置错误，不能靠重复续期修复。
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func validateWildcardConfiguration(cfg *config.Config) error {
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if cfg == nil || cfg.SSLType != config.SSLTypeAutoDNS {
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return nil
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}
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domains := wildcardCertificateDomains(cfg)
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if len(domains) != 1 {
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return newUserCertificateError("自动 DNS 证书需要有效的主域名")
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}
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base := strings.TrimPrefix(domains[0], "*.")
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covered := func(host string) bool {
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host = strings.ToLower(strings.TrimSuffix(strings.TrimSpace(host), "."))
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suffix := "." + strings.ToLower(base)
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label := strings.TrimSuffix(host, suffix)
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return strings.HasSuffix(host, suffix) && label != "" && !strings.Contains(label, ".")
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}
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if cfg.WebDomain != "" && !covered(cfg.WebDomain) {
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return newUserCertificateError("Web 域名必须是主域名的一级子域名，泛域名证书不覆盖根域名或多级子域名")
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}
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for _, domain := range cfg.Domains {
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if !covered("smtp."+domain) || !covered("imap."+domain) || !covered("pop."+domain) {
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return newUserCertificateError("附加邮箱域名的服务地址不在主域泛域名证书覆盖范围内")
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}
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}
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return nil
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}
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func wildcardCertificateDomains(cfg *config.Config) []string {
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if cfg == nil {
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return nil
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}
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domain := strings.TrimSpace(cfg.Domain)
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domain = strings.TrimSuffix(domain, ".")
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domain = strings.TrimPrefix(domain, "*.")
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if domain == "" {
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return nil
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}
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return []string{"*." + domain}
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}
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func certificateDomains(cfg *config.Config) []string {
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if cfg != nil && cfg.SSLType == config.SSLTypeAutoDNS {
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return wildcardCertificateDomains(cfg)
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}
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return sslDomains(cfg)
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}
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func renewCertificate(privateKey *ecdsa.PrivateKey, cfg *config.Config) error {
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myUser := MyUser{
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Email: "SSLMaster@" + cfg.Domain,
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key: privateKey,
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}
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conf := lego.NewConfig(&myUser)
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conf.UserAgent = "Smail"
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conf.Certificate.KeyType = certcrypto.RSA2048
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// A client facilitates communication with the CA server.
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client, err := lego.NewClient(conf)
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if err != nil {
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return errors.Wrap(err)
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}
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if cfg.SSLType == config.SSLTypeAutoHTTP {
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err = client.Challenge.SetHTTP01Provider(GetHttpChallengeInstance())
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if err != nil {
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return errors.Wrap(err)
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}
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} else if cfg.SSLType == config.SSLTypeAutoDNS {
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err = client.Challenge.SetDNS01Provider(GetDnsChallengeInstance(), dns01.AddDNSTimeout(60*time.Minute))
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if err != nil {
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return errors.Wrap(err)
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}
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log.Errorf("Please Set DNS Record/请将以下内容添加到DNS记录中:\n")
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for _, item := range GetDnsChallengeInstance().GetDNSSettings(nil) {
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log.Errorf("Type:%s\tHost:%s\tValue generated\n", item.Type, item.Host)
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}
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}
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var reg *registration.Resource
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reg, err = client.Registration.ResolveAccountByKey()
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if err != nil {
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return errors.Wrap(err)
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}
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myUser.Registration = reg
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domains := certificateDomains(cfg)
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request := certificate.ObtainRequest{
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Domains: domains,
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Bundle: true,
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}
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log.Infof("wait ssl renew")
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certificates, err := client.Certificate.Obtain(request)
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if err != nil {
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return errors.Wrap(err)
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}
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if err = writeCertificateFiles(cfg, certificates.PrivateKey, certificates.Certificate, certificates.IssuerCertificate); err != nil {
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return err
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}
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return nil
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}
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func generateCertificate(privateKey *ecdsa.PrivateKey, cfg *config.Config, newAccount bool) error {
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myUser := MyUser{
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Email: "i@" + cfg.Domain,
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key: privateKey,
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}
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conf := lego.NewConfig(&myUser)
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conf.UserAgent = "Smail"
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conf.Certificate.KeyType = certcrypto.RSA2048
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// A client facilitates communication with the CA server.
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client, err := lego.NewClient(conf)
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if err != nil {
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return errors.Wrap(err)
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}
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if cfg.SSLType == config.SSLTypeAutoHTTP {
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err = client.Challenge.SetHTTP01Provider(GetHttpChallengeInstance())
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if err != nil {
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return errors.Wrap(err)
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}
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} else if cfg.SSLType == config.SSLTypeAutoDNS {
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err = client.Challenge.SetDNS01Provider(GetDnsChallengeInstance(), dns01.AddDNSTimeout(60*time.Minute))
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if err != nil {
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return errors.Wrap(err)
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}
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}
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var reg *registration.Resource
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if newAccount {
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reg, err = client.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true})
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if err != nil {
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return errors.Wrap(err)
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}
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} else {
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reg, err = client.Registration.ResolveAccountByKey()
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if err != nil {
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return errors.Wrap(err)
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}
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}
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myUser.Registration = reg
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domains := certificateDomains(cfg)
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|
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request := certificate.ObtainRequest{
|
||
Domains: domains,
|
||
Bundle: true,
|
||
}
|
||
|
||
as := async.New(nil)
|
||
|
||
as.Process(func(params any) {
|
||
log.Infof("wait ssl")
|
||
certificates, err := client.Certificate.Obtain(request)
|
||
if err != nil {
|
||
log.WithError(err).Error("certificate issuance failed")
|
||
return
|
||
}
|
||
log.Infof("证书校验通过！")
|
||
if err := writeCertificateFiles(cfg, certificates.PrivateKey, certificates.Certificate, certificates.IssuerCertificate); err != nil {
|
||
log.WithError(err).Error("certificate storage failed")
|
||
return
|
||
}
|
||
|
||
if err := setup.Finish(); err != nil {
|
||
log.WithError(err).Error("finish setup after certificate issuance failed")
|
||
return
|
||
}
|
||
|
||
}, nil)
|
||
|
||
return nil
|
||
}
|
||
|
||
func GenSSL(update bool) error {
|
||
|
||
cfg, err := config.ReadConfig()
|
||
if err != nil {
|
||
return errors.Wrap(err)
|
||
}
|
||
if cfg.UsesProxyHTTPS() {
|
||
return newUserCertificateError("HTTPS 反代模式由反向代理管理证书，Smail 不自动申请或续期；邮件服务请导入外部维护的证书")
|
||
}
|
||
if !cfg.AutomaticSSLEnabled() {
|
||
return newUserCertificateError("当前证书由外部维护，不能自动申请或续期")
|
||
}
|
||
if err := validateWildcardConfiguration(cfg); err != nil {
|
||
return err
|
||
}
|
||
|
||
if !update {
|
||
privatePath, publicPath, pathErr := config.ResolveRuntimeSSLPaths(cfg)
|
||
privateFile, errpi := os.ReadFile(privatePath)
|
||
public, errpu := os.ReadFile(publicPath)
|
||
if pathErr != nil {
|
||
errpi = pathErr
|
||
errpu = pathErr
|
||
}
|
||
// 当前存在证书数据，就不生成了
|
||
if errpi == nil && errpu == nil && len(privateFile) > 0 && len(public) > 0 {
|
||
return nil
|
||
}
|
||
}
|
||
|
||
privateKey, newAccount, err := config.ReadPrivateKey()
|
||
if err != nil {
|
||
return errors.Wrap(err)
|
||
}
|
||
|
||
if !update {
|
||
return generateCertificate(privateKey, cfg, newAccount)
|
||
}
|
||
|
||
return renewCertificate(privateKey, cfg)
|
||
}
|
||
|
||
// CheckSSLCrtInfo 返回证书过期剩余天数
|
||
func CheckSSLCrtInfo() (int, time.Time, bool, error) {
|
||
|
||
cfg, err := config.ReadConfig()
|
||
if err != nil {
|
||
return -1, time.Now(), true, errors.Wrap(err)
|
||
}
|
||
// load cert and key by tls.LoadX509KeyPair
|
||
tlsCert, err := config.LoadRuntimeTLSCertificate(cfg)
|
||
if err != nil {
|
||
return -1, time.Now(), true, errors.Wrap(err)
|
||
}
|
||
|
||
cert, err := x509.ParseCertificate(tlsCert.Certificate[0])
|
||
|
||
if err != nil {
|
||
return -1, time.Now(), true, errors.Wrap(err)
|
||
}
|
||
|
||
nameMatchFail := !certificateMatchesConfiguredDomains(cert, cfg)
|
||
|
||
// 检查过期时间
|
||
hours := cert.NotAfter.Sub(time.Now()).Hours()
|
||
|
||
if hours <= 0 {
|
||
return -1, time.Now(), nameMatchFail, errors.New("Certificate has expired")
|
||
}
|
||
|
||
return cast.ToInt(hours / 24), cert.NotAfter, nameMatchFail, nil
|
||
}
|
||
|
||
func Update(needRestart bool) {
|
||
cfg := config.CurrentConfig()
|
||
if cfg.AutomaticSSLEnabled() && cfg.IsSetupReady() {
|
||
days, _, nameMatchFail, err := CheckSSLCrtInfo()
|
||
|
||
if days < 30 || err != nil || nameMatchFail {
|
||
if err != nil {
|
||
log.Errorf("SSL Check Error, Update SSL Certificate. Error Info :%+v", err)
|
||
} else {
|
||
log.Infof("SSL certificate remaining time is only %d days, renew SSL certificate.", days)
|
||
}
|
||
err = GenSSL(true)
|
||
if err != nil {
|
||
log.Errorf("SSL Update Error! %+v", err)
|
||
return
|
||
}
|
||
if needRestart {
|
||
// 更新完证书，重启服务
|
||
signal.RestartChan <- true
|
||
}
|
||
} else {
|
||
log.Debugf("SSL Check.")
|
||
}
|
||
}
|
||
|
||
}
|