[inspector_protocol] Support redirects and types whitelisting.

lib/DispatcherBase_cpp.template

Index: lib/DispatcherBase_cpp.template
diff --git a/lib/DispatcherBase_cpp.template b/lib/DispatcherBase_cpp.template
index 0d4a305abe89872af970ba20b9dc8cc1da563a20..e9730eb7b59b3030e536920c1d1a37706f3fe3cc 100644
--- a/lib/DispatcherBase_cpp.template
+++ b/lib/DispatcherBase_cpp.template
@@ -248,7 +248,13 @@ void UberDispatcher::registerBackend(const String& name, std::unique_ptr<protoco
     m_dispatchers[name] = std::move(dispatcher);
 }
 
-DispatchResponse::Status UberDispatcher::dispatch(std::unique_ptr<Value> parsedMessage)
+void UberDispatcher::setupRedirects(const HashMap<String, String>& redirects)
+{
+    for (const auto& pair : redirects)

[kozy, 2016/12/12 23:10:29]

Do we need to cleanup redirects before setup new one?

[dgozman, 2016/12/12 23:27:12]

No, this method accumulates redirects from different domains.

+        m_redirects[pair.first] = pair.second;
+}
+
+DispatchResponse::Status UberDispatcher::dispatch(std::unique_ptr<Value> parsedMessage, int* outCallId, String* outMethod)
 {
     if (!parsedMessage) {
         reportProtocolErrorTo(m_frontendChannel, DispatchResponse::kParseError, "Message must be a valid JSON");
@@ -263,6 +269,8 @@ DispatchResponse::Status UberDispatcher::dispatch(std::unique_ptr<Value> parsedM
     int callId = 0;
     protocol::Value* callIdValue = messageObject->get("id");
     bool success = callIdValue && callIdValue->asInteger(&callId);
+    if (outCallId)
+        *outCallId = callId;
     if (!success) {
         reportProtocolErrorTo(m_frontendChannel, DispatchResponse::kInvalidRequest, "Message must have integer 'id' porperty");
         return DispatchResponse::kError;
@@ -271,11 +279,17 @@ DispatchResponse::Status UberDispatcher::dispatch(std::unique_ptr<Value> parsedM
     protocol::Value* methodValue = messageObject->get("method");
     String method;
     success = methodValue && methodValue->asString(&method);
+    if (outMethod)
+        *outMethod = method;
     if (!success) {
         reportProtocolErrorTo(m_frontendChannel, callId, DispatchResponse::kInvalidRequest, "Message must have string 'method' porperty", nullptr);
         return DispatchResponse::kError;
     }
 
+    HashMap<String, String>::iterator redirectIt = m_redirects.find(method);
+    if (redirectIt != m_redirects.end())
+        method = redirectIt->second;
+
     size_t dotIndex = method.find(".");
     if (dotIndex == StringUtil::kNotFound) {
         if (m_fallThroughForNotFound)