RTCCertificate and RTCPeerConnection.generateCertificate added to JavaScript

Source/modules/mediastream/RTCPeerConnection.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * 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
@@ skipping 16 matching lines @@
  * (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 "config.h"
 #include "modules/mediastream/RTCPeerConnection.h"
 
 #include "bindings/core/v8/ArrayValue.h"
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "bindings/modules/v8/V8RTCCertificate.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/VoidCallback.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "modules/mediastream/MediaConstraintsImpl.h"
 #include "modules/mediastream/MediaStreamEvent.h"
 #include "modules/mediastream/RTCDTMFSender.h"
@@ skipping 141 matching lines @@
             KURL url(KURL(), *iter);
             if (!url.isValid() || !(url.protocolIs("turn") || url.protocolIs("turns") || url.protocolIs("stun"))) {
                 exceptionState.throwTypeError("Malformed URL");
                 return 0;
             }
 
             rtcConfiguration->appendServer(RTCIceServer::create(url, username, credential));
         }
     }
 
+    ArrayValue certificates;
+    if (DictionaryHelper::get(configuration, "certificates", certificates)
+        && !certificates.isUndefinedOrNull()) {
+        size_t numberOfCertificates;
+        certificates.length(numberOfCertificates);
+        for (size_t i = 0; i < numberOfCertificates; ++i) {
+            RTCCertificate* certificate = nullptr;
+
+            Dictionary dictCert;
+            certificates.get(i, dictCert);
+            v8::Local<v8::Value> valCert = dictCert.v8Value();
+            if (!valCert.IsEmpty()) {
+                certificate = V8RTCCertificate::toImplWithTypeCheck(configuration.isolate(), valCert);
+            }
+            if (!certificate) {
+                exceptionState.throwTypeError("Malformed sequence<RTCCertificate>");
+                return 0;
+            }
+
+            rtcConfiguration->appendCertificate(certificate->certificate()->shallowCopy());
+        }
+    }
+
     return rtcConfiguration;
 }
 
 RTCOfferOptions* RTCPeerConnection::parseOfferOptions(const Dictionary& options, ExceptionState& exceptionState)
 {
     if (options.isUndefinedOrNull())
         return 0;
 
     Vector<String> propertyNames;
     options.getPropertyNames(propertyNames);
@@ skipping 184 matching lines @@
 
     WebMediaConstraints constraints = MediaConstraintsImpl::create(mediaConstraints, exceptionState);
     if (exceptionState.hadException())
         return;
 
     bool valid = m_peerHandler->updateICE(configuration, constraints);
     if (!valid)
         exceptionState.throwDOMException(SyntaxError, "Could not update the ICE Agent with the given configuration.");
 }
 
+// The observer deletes itself upon generation complete. Keeps |m_resolver| alive until destruction.
+static class GenerateRTCCertificateObserver : public WebRTCCertificateObserver {
+public:
+    GenerateRTCCertificateObserver(ScriptPromiseResolver* resolver)

[Guido Urdaneta, 2015/09/03 11:07:49]

Constructor should be private and you should have a public create method.

[hbos_chromium, 2015/09/03 16:01:37]

Done.

+        : m_resolver(resolver)
+    {
+    }
+
+    ~GenerateRTCCertificateObserver() override
+    {
+    }
+
+    DEFINE_INLINE_TRACE() { visitor->trace(m_resolver); }
+
+private:
+    void onGenerateComplete(WebRTCCertificate* certificate) override
+    {
+        m_resolver->resolve(certificate ? new RTCCertificate(certificate) : nullptr);
+        delete this;
+    }
+
+    Persistent<ScriptPromiseResolver> m_resolver;
+};
+
+ScriptPromise RTCPeerConnection::generateCertificate(ScriptState* scriptState, const Dictionary& keygenAlgorithm, ExceptionState& exceptionState)
+{
+    // Validate and interpret input |keygenAlgorithm|.
+    // The value |keyType| corresponds to the rtc::KeyType in libjingle.
+    int keyType = -1;
+    String name;
+    if (DictionaryHelper::get(keygenAlgorithm, "name", name)) {
+        if (name == "RSASSA-PKCS1-v1_5") {
+            // RSA - Supported |keygenAlgorithm|:
+            // { name: "RSASSA-PKCS1-v1_5", modulusLength: 2048, publicExponent: 65537 }
+            // { name: "RSASSA-PKCS1-v1_5", modulusLength: 1024, publicExponent: 65537 }   (not a MUST in specification, but the one actually being used)
+            // TODO(hbos): Use modulusLength and not the default (1024).
+            int modulusLength = -1;
+            DictionaryHelper::get(keygenAlgorithm, "modulusLength", modulusLength);
+            int publicExponent = -1;
+            DictionaryHelper::get(keygenAlgorithm, "publicExponent", publicExponent);
+            if ((modulusLength == 2048 || modulusLength == 1024) && publicExponent == 65537) {
+                keyType = 0;
+            }
+        } else if (name == "ECDSA") {
+            // ECDSA - Supported |keygenAlgorithm|:
+            // { name: "ECDSA", namedCurve: "P-256" }
+            String namedCurve;
+            DictionaryHelper::get(keygenAlgorithm, "namedCurve", namedCurve);
+            if (namedCurve == "P-256") {
+                keyType = 1;
+            }
+        }
+    }
+    if (keyType == -1) {
+        // Invalid argument.
+        return ScriptPromise::rejectWithDOMException(
+            scriptState, DOMException::create(InvalidAccessError, ExceptionMessages::argumentNullOrIncorrectType(1, "AlgorithmIdentifier")));
+    }
+
+    ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromise promise = resolver->promise();
+
+    GenerateRTCCertificateObserver* certificateObserver = new GenerateRTCCertificateObserver(resolver);
+
+    // Generate certificate. The |certificateObserver| will resolve the promise asynchronously upon generate completion.
+    // The observer will manage its own and the resolver's destruction as well.
+    WebRTCCertificateGenerator* certificateGenerator = Platform::current()->createRTCCertificateGenerator();
+    certificateGenerator->generateCertificate(
+        keyType,
+        toDocument(scriptState->executionContext())->url(),
+        toDocument(scriptState->executionContext())->firstPartyForCookies(),
+        certificateObserver);
+    delete certificateGenerator;

[Guido Urdaneta, 2015/09/03 11:07:49]

Is it safe to delete |certificateGenerator| here?

[hbos_chromium, 2015/09/03 16:01:37]

Yes the object need only live for the generateCertificate call. Perhaps I should
use OwnPtr here as well.

+
+    return promise;
+}
+
 void RTCPeerConnection::addIceCandidate(RTCIceCandidate* iceCandidate, ExceptionState& exceptionState)
 {
     if (throwExceptionIfSignalingStateClosed(m_signalingState, exceptionState))
         return;
 
     if (!iceCandidate) {
         exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(1, "RTCIceCandidate"));
         return;
     }
 
@@ skipping 423 matching lines @@
 {
     visitor->trace(m_localStreams);
     visitor->trace(m_remoteStreams);
     visitor->trace(m_dataChannels);
     visitor->trace(m_scheduledEvents);
     RefCountedGarbageCollectedEventTargetWithInlineData<RTCPeerConnection>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink