Move talk/app/webrtc to webrtc/api

talk/app/webrtc/dtlsidentitystore.cc

Index: talk/app/webrtc/dtlsidentitystore.cc
diff --git a/talk/app/webrtc/dtlsidentitystore.cc b/talk/app/webrtc/dtlsidentitystore.cc
deleted file mode 100644
index 390ec0d0b76e001933cf551916b6536f47280a88..0000000000000000000000000000000000000000
--- a/talk/app/webrtc/dtlsidentitystore.cc
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * 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.
- */
-
-#include "talk/app/webrtc/dtlsidentitystore.h"
-
-#include <utility>
-
-#include "talk/app/webrtc/webrtcsessiondescriptionfactory.h"
-#include "webrtc/base/logging.h"
-
-using webrtc::DtlsIdentityRequestObserver;
-
-namespace webrtc {
-
-// Passed to SSLIdentity::Generate, "WebRTC". Used for the certificates'
-// subject and issuer name.
-const char kIdentityName[] = "WebRTC";
-
-namespace {
-
-enum {
-  MSG_DESTROY,
-  MSG_GENERATE_IDENTITY,
-  MSG_GENERATE_IDENTITY_RESULT
-};
-
-}  // namespace
-
-// This class runs on the worker thread to generate the identity. It's necessary
-// to separate this class from DtlsIdentityStore so that it can live on the
-// worker thread after DtlsIdentityStore is destroyed.
-class DtlsIdentityStoreImpl::WorkerTask : public sigslot::has_slots<>,
-                                          public rtc::MessageHandler {
- public:
-  WorkerTask(DtlsIdentityStoreImpl* store, rtc::KeyType key_type)
-      : signaling_thread_(rtc::Thread::Current()),
-        store_(store),
-        key_type_(key_type) {
-    store_->SignalDestroyed.connect(this, &WorkerTask::OnStoreDestroyed);
-  }
-
-  virtual ~WorkerTask() { RTC_DCHECK(signaling_thread_->IsCurrent()); }
-
- private:
-  void GenerateIdentity_w() {
-    LOG(LS_INFO) << "Generating identity, using keytype " << key_type_;
-    rtc::scoped_ptr<rtc::SSLIdentity> identity(
-        rtc::SSLIdentity::Generate(kIdentityName, key_type_));
-
-    // Posting to |this| avoids touching |store_| on threads other than
-    // |signaling_thread_| and thus avoids having to use locks.
-    IdentityResultMessageData* msg = new IdentityResultMessageData(
-        new IdentityResult(key_type_, std::move(identity)));
-    signaling_thread_->Post(this, MSG_GENERATE_IDENTITY_RESULT, msg);
-  }
-
-  void OnMessage(rtc::Message* msg) override {
-    switch (msg->message_id) {
-      case MSG_GENERATE_IDENTITY:
-        // This message always runs on the worker thread.
-        GenerateIdentity_w();
-
-        // Must delete |this|, owned by msg->pdata, on the signaling thread to
-        // avoid races on disconnecting the signal.
-        signaling_thread_->Post(this, MSG_DESTROY, msg->pdata);
-        break;
-      case MSG_GENERATE_IDENTITY_RESULT:
-        RTC_DCHECK(signaling_thread_->IsCurrent());
-        {
-          rtc::scoped_ptr<IdentityResultMessageData> pdata(
-              static_cast<IdentityResultMessageData*>(msg->pdata));
-          if (store_) {
-            store_->OnIdentityGenerated(pdata->data()->key_type_,
-                                        std::move(pdata->data()->identity_));
-          }
-        }
-        break;
-      case MSG_DESTROY:
-        RTC_DCHECK(signaling_thread_->IsCurrent());
-        delete msg->pdata;
-        // |this| has now been deleted. Don't touch member variables.
-        break;
-      default:
-        RTC_CHECK(false) << "Unexpected message type";
-    }
-  }
-
-  void OnStoreDestroyed() {
-    RTC_DCHECK(signaling_thread_->IsCurrent());
-    store_ = nullptr;
-  }
-
-  rtc::Thread* const signaling_thread_;
-  DtlsIdentityStoreImpl* store_;  // Only touched on |signaling_thread_|.
-  const rtc::KeyType key_type_;
-};
-
-DtlsIdentityStoreImpl::DtlsIdentityStoreImpl(rtc::Thread* signaling_thread,
-                                             rtc::Thread* worker_thread)
-    : signaling_thread_(signaling_thread),
-      worker_thread_(worker_thread),
-      request_info_() {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-  // Preemptively generate identities unless the worker thread and signaling
-  // thread are the same (only do preemptive work in the background).
-  if (worker_thread_ != signaling_thread_) {
-    // Only necessary for RSA.
-    GenerateIdentity(rtc::KT_RSA, nullptr);
-  }
-}
-
-DtlsIdentityStoreImpl::~DtlsIdentityStoreImpl() {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-  SignalDestroyed();
-}
-
-void DtlsIdentityStoreImpl::RequestIdentity(
-    rtc::KeyType key_type,
-    const rtc::scoped_refptr<webrtc::DtlsIdentityRequestObserver>& observer) {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-  RTC_DCHECK(observer);
-
-  GenerateIdentity(key_type, observer);
-}
-
-void DtlsIdentityStoreImpl::OnMessage(rtc::Message* msg) {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-  switch (msg->message_id) {
-    case MSG_GENERATE_IDENTITY_RESULT: {
-      rtc::scoped_ptr<IdentityResultMessageData> pdata(
-          static_cast<IdentityResultMessageData*>(msg->pdata));
-      OnIdentityGenerated(pdata->data()->key_type_,
-                          std::move(pdata->data()->identity_));
-      break;
-    }
-  }
-}
-
-bool DtlsIdentityStoreImpl::HasFreeIdentityForTesting(
-    rtc::KeyType key_type) const {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-  return request_info_[key_type].free_identity_.get() != nullptr;
-}
-
-void DtlsIdentityStoreImpl::GenerateIdentity(
-    rtc::KeyType key_type,
-    const rtc::scoped_refptr<webrtc::DtlsIdentityRequestObserver>& observer) {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-
-  // Enqueue observer to be informed when generation of |key_type| is completed.
-  if (observer.get()) {
-    request_info_[key_type].request_observers_.push(observer);
-
-    // Already have a free identity generated?
-    if (request_info_[key_type].free_identity_.get()) {
-      // Return identity async - post even though we are on |signaling_thread_|.
-      LOG(LS_VERBOSE) << "Using a free DTLS identity.";
-      ++request_info_[key_type].gen_in_progress_counts_;
-      IdentityResultMessageData* msg =
-          new IdentityResultMessageData(new IdentityResult(
-              key_type, std::move(request_info_[key_type].free_identity_)));
-      signaling_thread_->Post(this, MSG_GENERATE_IDENTITY_RESULT, msg);
-      return;
-    }
-
-    // Free identity in the process of being generated?
-    if (request_info_[key_type].gen_in_progress_counts_ ==
-            request_info_[key_type].request_observers_.size()) {
-      // No need to do anything, the free identity will be returned to the
-      // observer in a MSG_GENERATE_IDENTITY_RESULT.
-      return;
-    }
-  }
-
-  // Enqueue/Post a worker task to do the generation.
-  ++request_info_[key_type].gen_in_progress_counts_;
-  WorkerTask* task = new WorkerTask(this, key_type);  // Post 1 task/request.
-  // The WorkerTask is owned by the message data to make sure it will not be
-  // leaked even if the task does not get run.
-  WorkerTaskMessageData* msg = new WorkerTaskMessageData(task);
-  worker_thread_->Post(task, MSG_GENERATE_IDENTITY, msg);
-}
-
-void DtlsIdentityStoreImpl::OnIdentityGenerated(
-    rtc::KeyType key_type, rtc::scoped_ptr<rtc::SSLIdentity> identity) {
-  RTC_DCHECK(signaling_thread_->IsCurrent());
-
-  RTC_DCHECK(request_info_[key_type].gen_in_progress_counts_);
-  --request_info_[key_type].gen_in_progress_counts_;
-
-  rtc::scoped_refptr<webrtc::DtlsIdentityRequestObserver> observer;
-  if (!request_info_[key_type].request_observers_.empty()) {
-    observer = request_info_[key_type].request_observers_.front();
-    request_info_[key_type].request_observers_.pop();
-  }
-
-  if (observer.get() == nullptr) {
-    // No observer - store result in |free_identities_|.
-    RTC_DCHECK(!request_info_[key_type].free_identity_.get());
-    request_info_[key_type].free_identity_.swap(identity);
-    if (request_info_[key_type].free_identity_.get())
-      LOG(LS_VERBOSE) << "A free DTLS identity was saved.";
-    else
-      LOG(LS_WARNING) << "Failed to generate DTLS identity (preemptively).";
-  } else {
-    // Return the result to the observer.
-    if (identity.get()) {
-      LOG(LS_VERBOSE) << "A DTLS identity is returned to an observer.";
-      observer->OnSuccess(std::move(identity));
-    } else {
-      LOG(LS_WARNING) << "Failed to generate DTLS identity.";
-      observer->OnFailure(0);
-    }
-
-    // Preemptively generate another identity of the same type?
-    if (worker_thread_ != signaling_thread_ && // Only do in background thread.
-        key_type == rtc::KT_RSA &&             // Only necessary for RSA.
-        !request_info_[key_type].free_identity_.get() &&
-        request_info_[key_type].request_observers_.size() <=
-            request_info_[key_type].gen_in_progress_counts_) {
-      GenerateIdentity(key_type, nullptr);
-    }
-  }
-}
-
-}  // namespace webrtc