Move talk/app/webrtc to webrtc/api

talk/app/webrtc/dtlsidentitystore.h

-/*
- * libjingle
- * Copyright 2015 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef TALK_APP_WEBRTC_DTLSIDENTITYSTORE_H_
-#define TALK_APP_WEBRTC_DTLSIDENTITYSTORE_H_
-
-#include <queue>
-#include <string>
-#include <utility>
-
-#include "webrtc/base/messagehandler.h"
-#include "webrtc/base/messagequeue.h"
-#include "webrtc/base/refcount.h"
-#include "webrtc/base/scoped_ptr.h"
-#include "webrtc/base/scoped_ref_ptr.h"
-#include "webrtc/base/sslidentity.h"
-#include "webrtc/base/thread.h"
-
-namespace webrtc {
-
-// Passed to SSLIdentity::Generate.
-extern const char kIdentityName[];
-
-class SSLIdentity;
-class Thread;
-
-// Used to receive callbacks of DTLS identity requests.
-class DtlsIdentityRequestObserver : public rtc::RefCountInterface {
- public:
-  virtual void OnFailure(int error) = 0;
-  // TODO(hbos): Unify the OnSuccess method once Chrome code is updated.
-  virtual void OnSuccess(const std::string& der_cert,
-                         const std::string& der_private_key) = 0;
-  // |identity| is a scoped_ptr because rtc::SSLIdentity is not copyable and the
-  // client has to get the ownership of the object to make use of it.
-  virtual void OnSuccess(rtc::scoped_ptr<rtc::SSLIdentity> identity) = 0;
-
- protected:
-  virtual ~DtlsIdentityRequestObserver() {}
-};
-
-// This interface defines an in-memory DTLS identity store, which generates DTLS
-// identities.
-// APIs calls must be made on the signaling thread and the callbacks are also
-// called on the signaling thread.
-class DtlsIdentityStoreInterface {
- public:
-  virtual ~DtlsIdentityStoreInterface() { }
-
-  // The |observer| will be called when the requested identity is ready, or when
-  // identity generation fails.
-  // TODO(torbjorng,hbos): The following RequestIdentity is about to be removed,
-  // see below todo.
-  virtual void RequestIdentity(
-      rtc::KeyType key_type,
-      const rtc::scoped_refptr<DtlsIdentityRequestObserver>& observer) {
-    // Add default parameterization.
-    RequestIdentity(rtc::KeyParams(key_type), observer);
-  }
-  // TODO(torbjorng,hbos): Parameterized key types! The following
-  // RequestIdentity should replace the old one that takes rtc::KeyType. When
-  // the new one is implemented by Chromium and WebRTC the old one should be
-  // removed. crbug.com/544902, webrtc:5092.
-  virtual void RequestIdentity(
-      rtc::KeyParams key_params,
-      const rtc::scoped_refptr<DtlsIdentityRequestObserver>& observer) {
-    // Drop parameterization.
-    RequestIdentity(key_params.type(), observer);
-  }
-};
-
-// The WebRTC default implementation of DtlsIdentityStoreInterface.
-// Identity generation is performed on the worker thread.
-class DtlsIdentityStoreImpl : public DtlsIdentityStoreInterface,
-                              public rtc::MessageHandler {
- public:
-  // This will start to preemptively generating an RSA identity in the
-  // background if the worker thread is not the same as the signaling thread.
-  DtlsIdentityStoreImpl(rtc::Thread* signaling_thread,
-                        rtc::Thread* worker_thread);
-  ~DtlsIdentityStoreImpl() override;
-
-  // DtlsIdentityStoreInterface override;
-  void RequestIdentity(
-      rtc::KeyType key_type,
-      const rtc::scoped_refptr<DtlsIdentityRequestObserver>& observer) override;
-
-  // rtc::MessageHandler override;
-  void OnMessage(rtc::Message* msg) override;
-
-  // Returns true if there is a free RSA identity, used for unit tests.
-  bool HasFreeIdentityForTesting(rtc::KeyType key_type) const;
-
- private:
-  void GenerateIdentity(
-      rtc::KeyType key_type,
-      const rtc::scoped_refptr<DtlsIdentityRequestObserver>& observer);
-  void OnIdentityGenerated(rtc::KeyType key_type,
-                           rtc::scoped_ptr<rtc::SSLIdentity> identity);
-
-  class WorkerTask;
-  typedef rtc::ScopedMessageData<DtlsIdentityStoreImpl::WorkerTask>
-      WorkerTaskMessageData;
-
-  // A key type-identity pair.
-  struct IdentityResult {
-    IdentityResult(rtc::KeyType key_type,
-                   rtc::scoped_ptr<rtc::SSLIdentity> identity)
-        : key_type_(key_type), identity_(std::move(identity)) {}
-
-    rtc::KeyType key_type_;
-    rtc::scoped_ptr<rtc::SSLIdentity> identity_;
-  };
-
-  typedef rtc::ScopedMessageData<IdentityResult> IdentityResultMessageData;
-
-  sigslot::signal0<> SignalDestroyed;
-
-  rtc::Thread* const signaling_thread_;
-  // TODO(hbos): RSA generation is slow and would be VERY slow if we switch over
-  // to 2048, DtlsIdentityStore should use a new thread and not the "general
-  // purpose" worker thread.
-  rtc::Thread* const worker_thread_;
-
-  struct RequestInfo {
-    RequestInfo()
-        : request_observers_(), gen_in_progress_counts_(0), free_identity_() {}
-
-    std::queue<rtc::scoped_refptr<DtlsIdentityRequestObserver>>
-        request_observers_;
-    size_t gen_in_progress_counts_;
-    rtc::scoped_ptr<rtc::SSLIdentity> free_identity_;
-  };
-
-  // One RequestInfo per KeyType. Only touch on the |signaling_thread_|.
-  RequestInfo request_info_[rtc::KT_LAST];
-};
-
-}  // namespace webrtc
-
-#endif  // TALK_APP_WEBRTC_DTLSIDENTITYSTORE_H_