139 lines
4.2 KiB
Go
139 lines
4.2 KiB
Go
package config
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import (
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"sync"
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"time"
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log "github.com/sirupsen/logrus"
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)
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func encodeSSLCertificates(certificates []*x509.Certificate) []byte {
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var result []byte
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for _, certificate := range certificates {
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result = append(result, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certificate.Raw})...)
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}
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return result
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}
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// 所有协议共享已完整校验的内存证书；只影响新握手，不关闭既有连接。
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var liveTLS = struct {
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sync.Mutex
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root string
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certificate *tls.Certificate
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checked time.Time
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warned time.Time
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}{}
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func CurrentCertificateConfig() *Config {
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cfg := CurrentConfig()
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if cfg == nil {
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return nil
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}
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if manager := CurrentManager(); manager != nil {
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runtime := manager.Snapshot()
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cfg.SSL = runtime.SSL.TLS
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cfg.Domain, cfg.WebDomain = runtime.Root.Domains.Primary, runtime.Root.Domains.Web
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cfg.Domains = runtime.Root.Domains.Accepted
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cfg.AdminRecoveryDomain = runtime.Root.Domains.AdminRecovery
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cfg.TLSMode = runtime.Root.HTTP.TLSMode
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cfg.HttpsEnabled = 2
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if runtime.Root.HTTP.HTTPSEnabled {
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cfg.HttpsEnabled = 1
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}
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cfg.SSLType = SSLTypeUser
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if EffectiveSSLManagement(cfg.SSL) == SSLManagementProject {
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cfg.SSLType = SSLTypeAutoHTTP
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if cfg.SSL.Challenge == SSLChallengeDNS {
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cfg.SSLType = SSLTypeAutoDNS
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}
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}
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}
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return cfg
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}
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func runtimeTLSCertificate(force bool) (*tls.Certificate, error) {
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liveTLS.Lock()
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defer liveTLS.Unlock()
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now := time.Now()
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if liveTLS.root != ROOT_PATH {
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liveTLS.certificate, liveTLS.checked, liveTLS.warned = nil, time.Time{}, time.Time{}
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liveTLS.root = ROOT_PATH
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}
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if !force && liveTLS.certificate != nil && now.Sub(liveTLS.checked) < time.Second && now.Before(liveTLS.certificate.Leaf.NotAfter) {
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return liveTLS.certificate, nil
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}
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liveTLS.checked = now
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cfg := CurrentCertificateConfig()
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certificate, err := loadValidatedRuntimeCertificate(cfg)
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if err == nil {
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liveTLS.certificate = &certificate
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return liveTLS.certificate, nil
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}
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if (liveTLS.certificate == nil || !now.Before(liveTLS.certificate.Leaf.NotAfter)) && cfg != nil && cfg.SSL.PreviousCertificateRef != "" {
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previous := *cfg
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previous.SSL.CertificateRef = cfg.SSL.PreviousCertificateRef
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previous.SSL.PrivateKeyRef = cfg.SSL.PreviousPrivateKeyRef
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if fallback, fallbackErr := loadValidatedRuntimeCertificate(&previous); fallbackErr == nil {
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liveTLS.certificate = &fallback
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}
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}
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if liveTLS.certificate != nil && now.Before(liveTLS.certificate.Leaf.NotAfter) {
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if now.Sub(liveTLS.warned) >= time.Minute {
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log.WithFields(log.Fields{"action": "热加载 TLS 证书", "result": "failure"}).Warn("新证书不可用，继续使用尚未过期的已校验证书")
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liveTLS.warned = now
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}
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return liveTLS.certificate, err
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}
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return nil, err
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}
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func loadValidatedRuntimeCertificate(cfg *Config) (tls.Certificate, error) {
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certificate, err := LoadRuntimeTLSCertificate(cfg)
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if err != nil {
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return tls.Certificate{}, err
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}
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certificate.Leaf, err = x509.ParseCertificate(certificate.Certificate[0])
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if err != nil {
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return tls.Certificate{}, err
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}
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runtime := RuntimeConfig{Root: RootConfig{Domains: DomainConfig{
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Primary: cfg.Domain,
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Web: cfg.WebDomain,
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Accepted: cfg.Domains,
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AdminRecovery: cfg.AdminRecoveryDomain,
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}}}
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runtime.SSL.TLS = cfg.SSL
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if cfg.EffectiveSSLType() == SSLTypeAutoDNS {
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runtime.SSL.TLS.Management = SSLManagementProject
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runtime.SSL.TLS.Challenge = SSLChallengeDNS
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}
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for _, domain := range validationCertificateDomains(&runtime) {
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if err := certificate.Leaf.VerifyHostname(domain); err != nil {
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return tls.Certificate{}, ErrSSLCertificateDomain
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}
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}
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return certificate, nil
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}
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// NewRuntimeTLSConfig 在启动时验证证书，后续握手自动使用最新有效证书。
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func NewRuntimeTLSConfig() (*tls.Config, error) {
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if certificate, err := runtimeTLSCertificate(true); certificate == nil {
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return nil, err
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}
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return &tls.Config{MinVersion: tls.VersionTLS12, GetCertificate: func(*tls.ClientHelloInfo) (*tls.Certificate, error) {
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certificate, err := runtimeTLSCertificate(false)
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if certificate != nil {
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return certificate, nil
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}
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return nil, err
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}}, nil
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}
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func ReloadRuntimeTLSCertificate() error {
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_, err := runtimeTLSCertificate(true)
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return err
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}
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