text: /*
   *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #ifndef RTC_BASE_RTCCERTIFICATEGENERATOR_H_
  #define RTC_BASE_RTCCERTIFICATEGENERATOR_H_
  
  #include BOSS_ABSEILCPP_U_absl__types__optional_h //original-code:"absl/types/optional.h"
  #include BOSS_WEBRTC_U_rtc_base__refcount_h //original-code:"rtc_base/refcount.h"
  #include BOSS_WEBRTC_U_rtc_base__rtccertificate_h //original-code:"rtc_base/rtccertificate.h"
  #include BOSS_WEBRTC_U_rtc_base__scoped_ref_ptr_h //original-code:"rtc_base/scoped_ref_ptr.h"
  #include BOSS_WEBRTC_U_rtc_base__sslidentity_h //original-code:"rtc_base/sslidentity.h"
  #include BOSS_WEBRTC_U_rtc_base__thread_h //original-code:"rtc_base/thread.h"
  
  namespace rtc {
  
  // See |RTCCertificateGeneratorInterface::GenerateCertificateAsync|.
  class RTCCertificateGeneratorCallback : public RefCountInterface {
   public:
    virtual void OnSuccess(const scoped_refptr<RTCCertificate>& certificate) = 0;
    virtual void OnFailure() = 0;
  
   protected:
    ~RTCCertificateGeneratorCallback() override {}
  };
  
  // Generates |RTCCertificate|s.
  // See |RTCCertificateGenerator| for the WebRTC repo's implementation.
  class RTCCertificateGeneratorInterface {
   public:
    virtual ~RTCCertificateGeneratorInterface() {}
  
    // Generates a certificate asynchronously on the worker thread.
    // Must be called on the signaling thread. The |callback| is invoked with the
    // result on the signaling thread. |exipres_ms| optionally specifies for how
    // long we want the certificate to be valid, but the implementation may choose
    // its own restrictions on the expiration time.
    virtual void GenerateCertificateAsync(
        const KeyParams& key_params,
        const absl::optional<uint64_t>& expires_ms,
        const scoped_refptr<RTCCertificateGeneratorCallback>& callback) = 0;
  };
  
  // Standard implementation of |RTCCertificateGeneratorInterface|.
  // The static function |GenerateCertificate| generates a certificate on the
  // current thread. The |RTCCertificateGenerator| instance generates certificates
  // asynchronously on the worker thread with |GenerateCertificateAsync|.
  class RTCCertificateGenerator : public RTCCertificateGeneratorInterface {
   public:
    // Generates a certificate on the current thread. Returns null on failure.
    // If |expires_ms| is specified, the certificate will expire in approximately
    // that many milliseconds from now. |expires_ms| is limited to a year, a
    // larger value than that is clamped down to a year. If |expires_ms| is not
    // specified, a default expiration time is used.
    static scoped_refptr<RTCCertificate> GenerateCertificate(
        const KeyParams& key_params,
        const absl::optional<uint64_t>& expires_ms);
  
    RTCCertificateGenerator(Thread* signaling_thread, Thread* worker_thread);
    ~RTCCertificateGenerator() override {}
  
    // |RTCCertificateGeneratorInterface| overrides.
    // If |expires_ms| is specified, the certificate will expire in approximately
    // that many milliseconds from now. |expires_ms| is limited to a year, a
    // larger value than that is clamped down to a year. If |expires_ms| is not
    // specified, a default expiration time is used.
    void GenerateCertificateAsync(
        const KeyParams& key_params,
        const absl::optional<uint64_t>& expires_ms,
        const scoped_refptr<RTCCertificateGeneratorCallback>& callback) override;
  
   private:
    Thread* const signaling_thread_;
    Thread* const worker_thread_;
  };
  
  }  // namespace rtc
  
  #endif  // RTC_BASE_RTCCERTIFICATEGENERATOR_H_
  