Revert r111596 "WebSocket Pepper API: in process API implementation"

webkit/plugins/ppapi/ppb_websocket_impl.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/plugins/ppapi/ppb_websocket_impl.h"
 
-#include <string>
-
-#include "base/logging.h"
-#include "googleurl/src/gurl.h"
-#include "net/base/net_util.h"
-#include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/pp_var.h"
-#include "ppapi/c/ppb_var.h"
-#include "ppapi/cpp/module.h"
-#include "ppapi/shared_impl/var.h"
-#include "ppapi/shared_impl/var_tracker.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebData.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebSocket.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebURL.h"
-#include "webkit/plugins/ppapi/host_globals.h"
-#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
-#include "webkit/plugins/ppapi/resource_helper.h"
 
-using ppapi::PpapiGlobals;
-using ppapi::StringVar;
 using ppapi::thunk::PPB_WebSocket_API;
-using ppapi::VarTracker;
-using WebKit::WebData;
-using WebKit::WebDocument;
-using WebKit::WebString;
-using WebKit::WebSocket;
-using WebKit::WebSocketClient;
-using WebKit::WebURL;
-
-static const uint32_t kMaxReasonSizeInBytes = 123;
 
 namespace webkit {
 namespace ppapi {
 
 PPB_WebSocket_Impl::PPB_WebSocket_Impl(PP_Instance instance)
-    : Resource(instance),
-      state_(PP_WEBSOCKETREADYSTATE_INVALID_DEV),
-      receive_callback_var_(NULL),
-      wait_for_receive_(false),
-      close_code_(0),
-      close_was_clean_(PP_FALSE) {
-  empty_string_ = new StringVar(
-      PpapiGlobals::Get()->GetModuleForInstance(instance), "", 0);
+    : Resource(instance) {
 }
 
 PPB_WebSocket_Impl::~PPB_WebSocket_Impl() {
-  if (websocket_.get())
-    websocket_->disconnect();
-
-  // Clean up received and unread messages
-  VarTracker* var_tracker = PpapiGlobals::Get()->GetVarTracker();
-  while (!received_messages_.empty()) {
-    PP_Var var = received_messages_.front();
-    received_messages_.pop();
-    var_tracker->ReleaseVar(var);
-  }
 }
 
 // static
 PP_Resource PPB_WebSocket_Impl::Create(PP_Instance instance) {
   scoped_refptr<PPB_WebSocket_Impl> ws(new PPB_WebSocket_Impl(instance));
   return ws->GetReference();
 }
 
 PPB_WebSocket_API* PPB_WebSocket_Impl::AsPPB_WebSocket_API() {
   return this;
 }
 
 int32_t PPB_WebSocket_Impl::Connect(PP_Var url,
                                     const PP_Var protocols[],
                                     uint32_t protocol_count,
                                     PP_CompletionCallback callback) {
-  // Check mandatory interfaces.
-  PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
-  DCHECK(plugin_instance);
-  if (!plugin_instance)
-    return PP_ERROR_FAILED;
-
-  // Connect() can be called at most once.
-  if (websocket_.get())
-    return PP_ERROR_INPROGRESS;
-  if (state_ != PP_WEBSOCKETREADYSTATE_INVALID_DEV)
-    return PP_ERROR_INPROGRESS;
-  state_ = PP_WEBSOCKETREADYSTATE_CLOSED_DEV;
-
-  // Validate |callback| (Doesn't support blocking callback)
-  if (!callback.func)
-    return PP_ERROR_BLOCKS_MAIN_THREAD;
-
-  // Validate url and convert it to WebURL.
-  scoped_refptr<StringVar> url_string = StringVar::FromPPVar(url);
-  if (!url_string)
-    return PP_ERROR_BADARGUMENT;
-  GURL gurl(url_string->value());
-  if (!gurl.is_valid())
-    return PP_ERROR_BADARGUMENT;
-  if (!gurl.SchemeIs("ws") && !gurl.SchemeIs("wss"))
-    return PP_ERROR_BADARGUMENT;
-  if (gurl.has_ref())
-    return PP_ERROR_BADARGUMENT;
-  if (!net::IsPortAllowedByDefault(gurl.IntPort()))
-    return PP_ERROR_BADARGUMENT;
-  WebURL web_url(gurl);
-
-  // Validate protocols and convert it to WebString.
-  // TODO(toyoshim): Detect duplicated protocols as error.
-  std::string protocol_string;
-  for (uint32_t i = 0; i < protocol_count; i++) {
-    // TODO(toyoshim): Similar function exist in WebKit::WebSocket.
-    // We must rearrange them into WebKit::WebChannel and share its protocol
-    // related implementation via WebKit API.
-    scoped_refptr<StringVar> string_var;
-    string_var = StringVar::FromPPVar(protocols[i]);
-    if (!string_var || !string_var->value().length())
-      return PP_ERROR_BADARGUMENT;
-    for (std::string::const_iterator it = string_var->value().begin();
-        it != string_var->value().end();
-        ++it) {
-      uint8_t character = static_cast<uint8_t>(*it);
-      // WebSocket specification says "(Subprotocol string must consist of)
-      // characters in the range U+0021 to U+007E not including separator
-      // characters as defined in [RFC2616]."
-      const uint8_t minimumProtocolCharacter = '!';  // U+0021.
-      const uint8_t maximumProtocolCharacter = '~';  // U+007E.
-      if (character < minimumProtocolCharacter ||
-          character > maximumProtocolCharacter ||
-          character == '"' || character == '(' || character == ')' ||
-          character == ',' || character == '/' ||
-          (character >= ':' && character <= '@') ||  // U+003A - U+0040
-          (character >= '[' && character <= ']') ||  // U+005B - u+005D
-          character == '{' || character == '}')
-        return PP_ERROR_BADARGUMENT;
-    }
-    if (i != 0)
-      protocol_string.append(",");
-    protocol_string.append(string_var->value());
-  }
-  WebString web_protocols = WebString::fromUTF8(protocol_string);
-
-  // Create WebKit::WebSocket object.
-  WebDocument document = plugin_instance->container()->element().document();
-  websocket_.reset(WebSocket::create(document, this));
-  DCHECK(websocket_.get());
-  if (!websocket_.get())
-    return PP_ERROR_NOTSUPPORTED;
-
-  websocket_->connect(web_url, web_protocols);
-  state_ = PP_WEBSOCKETREADYSTATE_CONNECTING_DEV;
-
-  // Install callback.
-  connect_callback_ = callback;
-
-  return PP_OK_COMPLETIONPENDING;
+  // TODO(toyoshim): Implement it.
+  return PP_ERROR_NOTSUPPORTED;
 }
 
 int32_t PPB_WebSocket_Impl::Close(uint16_t code,
                                   PP_Var reason,
                                   PP_CompletionCallback callback) {
-  // Check mandarory interfaces.
-  if (!websocket_.get())
-    return PP_ERROR_FAILED;
-
-  // Validate |callback| (Doesn't support blocking callback)
-  if (!callback.func)
-    return PP_ERROR_BLOCKS_MAIN_THREAD;
-
-  // Validate |code|.
-  if (code != WebSocket::CloseEventCodeNotSpecified) {
-    if (!(code == WebSocket::CloseEventCodeNormalClosure ||
-        (WebSocket::CloseEventCodeMinimumUserDefined <= code &&
-        code <= WebSocket::CloseEventCodeMaximumUserDefined)))
-    return PP_ERROR_NOACCESS;
-  }
-  // Validate |reason|.
-  // TODO(toyoshim): Returns PP_ERROR_BADARGUMENT if |reason| contains any
-  // surrogates.
-  scoped_refptr<StringVar> reason_string = StringVar::FromPPVar(reason);
-  if (!reason_string || reason_string->value().size() > kMaxReasonSizeInBytes)
-    return PP_ERROR_BADARGUMENT;
-
-  // Check state.
-  if (state_ == PP_WEBSOCKETREADYSTATE_CLOSING_DEV ||
-      state_ == PP_WEBSOCKETREADYSTATE_CLOSED_DEV)
-    return PP_ERROR_INPROGRESS;
-
-  // Install |callback|.
-  close_callback_ = callback;
-
-  if (state_ == PP_WEBSOCKETREADYSTATE_CONNECTING_DEV) {
-    state_ = PP_WEBSOCKETREADYSTATE_CLOSING_DEV;
-    PP_RunAndClearCompletionCallback(&connect_callback_, PP_ERROR_ABORTED);
-    websocket_->fail(
-        "WebSocket was closed before the connection was established.");
-    return PP_OK_COMPLETIONPENDING;
-  }
-
-  // TODO(toyoshim): Handle bufferedAmount here.
-
-  state_ = PP_WEBSOCKETREADYSTATE_CLOSING_DEV;
-  WebString web_reason = WebString::fromUTF8(reason_string->value());
-  websocket_->close(code, web_reason);
-
-  return PP_OK_COMPLETIONPENDING;
+  // TODO(toyoshim): Implement it.
+  return PP_ERROR_NOTSUPPORTED;
 }
 
 int32_t PPB_WebSocket_Impl::ReceiveMessage(PP_Var* message,
                                            PP_CompletionCallback callback) {
-  // Check state.
-  if (state_ == PP_WEBSOCKETREADYSTATE_INVALID_DEV ||
-      state_ == PP_WEBSOCKETREADYSTATE_CONNECTING_DEV)
-    return PP_ERROR_BADARGUMENT;
-
-  // Just return received message if any received message is queued.
-  if (!received_messages_.empty())
-    return DoReceive();
-
-  // Or retain |message| as buffer to store and install |callback|.
-  wait_for_receive_ = true;
-  receive_callback_var_ = message;
-  receive_callback_ = callback;
-
-  return PP_OK_COMPLETIONPENDING;
+  // TODO(toyoshim): Implement it.
+  return PP_ERROR_NOTSUPPORTED;
 }
 
 int32_t PPB_WebSocket_Impl::SendMessage(PP_Var message) {
-  // Check mandatory interfaces.
-  if (!websocket_.get())
-    return PP_ERROR_FAILED;
-
-  // Check state.
-  if (state_ == PP_WEBSOCKETREADYSTATE_INVALID_DEV ||
-      state_ == PP_WEBSOCKETREADYSTATE_CONNECTING_DEV)
-    return PP_ERROR_BADARGUMENT;
-
-  if (state_ == PP_WEBSOCKETREADYSTATE_CLOSING_DEV ||
-      state_ == PP_WEBSOCKETREADYSTATE_CLOSED_DEV) {
-    // TODO(toyoshim): Handle bufferedAmount here.
-  }
-
-  if (message.type != PP_VARTYPE_STRING) {
-    // TODO(toyoshim): Support binary data.
-    return PP_ERROR_NOTSUPPORTED;
-  }
-
-  // Convert message to WebString.
-  scoped_refptr<StringVar> message_string = StringVar::FromPPVar(message);
-  if (!message_string)
-    return PP_ERROR_BADARGUMENT;
-  WebString web_message = WebString::fromUTF8(message_string->value());
-  if (!websocket_->sendText(web_message))
-    return PP_ERROR_BADARGUMENT;
-
-  return PP_OK;
+  // TODO(toyoshim): Implement it.
+  return PP_ERROR_NOTSUPPORTED;
 }
 
 uint64_t PPB_WebSocket_Impl::GetBufferedAmount() {
-  // TODO(toyoshim): Implement.
+  // TODO(toyoshim): Implement it.
   return 0;
 }
 
 uint16_t PPB_WebSocket_Impl::GetCloseCode() {
-  return close_code_;
+  // TODO(toyoshim): Implement it.
+  return 0;
 }
 
 PP_Var PPB_WebSocket_Impl::GetCloseReason() {
-  if (!close_reason_)
-    return empty_string_->GetPPVar();
-  return close_reason_->GetPPVar();
+  // TODO(toyoshim): Implement it.
+  return PP_MakeUndefined();
 }
 
 PP_Bool PPB_WebSocket_Impl::GetCloseWasClean() {
-  return close_was_clean_;
+  // TODO(toyoshim): Implement it.
+  return PP_FALSE;
 }
 
 PP_Var PPB_WebSocket_Impl::GetExtensions() {
-  // TODO(toyoshim): For now, always returns empty string.
-  if (!extensions_)
-    return empty_string_->GetPPVar();
-  return extensions_->GetPPVar();
+  // TODO(toyoshim): Implement it.
+  return PP_MakeUndefined();
 }
 
 PP_Var PPB_WebSocket_Impl::GetProtocol() {
-  // TODO(toyoshim): Implement.
-  if (!protocol_)
-    return empty_string_->GetPPVar();
-  return protocol_->GetPPVar();
+  // TODO(toyoshim): Implement it.
+  return PP_MakeUndefined();
 }
 
 PP_WebSocketReadyState_Dev PPB_WebSocket_Impl::GetReadyState() {
-  return state_;
+  // TODO(toyoshim): Implement it.
+  return PP_WEBSOCKETREADYSTATE_INVALID_DEV;
 }
 
 PP_Var PPB_WebSocket_Impl::GetURL() {
-  // TODO(toyoshim): For now, always returns empty string.
-  if (!url_)
-    return empty_string_->GetPPVar();
-  return url_->GetPPVar();
-}
-
-void PPB_WebSocket_Impl::didConnect() {
-  DCHECK_EQ(PP_WEBSOCKETREADYSTATE_CONNECTING_DEV, state_);
-  state_ = PP_WEBSOCKETREADYSTATE_OPEN_DEV;
-  PP_RunAndClearCompletionCallback(&connect_callback_, PP_OK);
-}
-
-void PPB_WebSocket_Impl::didReceiveMessage(const WebString& message) {
-  // Append received data to queue.
-  std::string string = message.utf8();
-  PP_Var var = StringVar::StringToPPVar(
-      PpapiGlobals::Get()->GetModuleForInstance(pp_instance()), string);
-  received_messages_.push(var);
-
-  if (!wait_for_receive_)
-    return;
-
-  PP_RunAndClearCompletionCallback(&receive_callback_, DoReceive());
-}
-
-void PPB_WebSocket_Impl::didReceiveBinaryData(const WebData& binaryData) {
-  DLOG(INFO) << "didReceiveBinaryData is not implemented yet.";
-  // TODO(toyoshim): Support to receive binary data.
-}
-
-void PPB_WebSocket_Impl::didReceiveMessageError() {
-  // TODO(toyoshim): Must implement.
-  DLOG(INFO) << "didReceiveMessageError is not implemented yet.";
-}
-
-void PPB_WebSocket_Impl::didStartClosingHandshake() {
-  // TODO(toyoshim): Must implement.
-  DLOG(INFO) << "didStartClosingHandshake is not implemented yet.";
-}
-
-void PPB_WebSocket_Impl::didClose(unsigned long bufferedAmount,
-                                  ClosingHandshakeCompletionStatus status,
-                                  unsigned short code,
-                                  const WebString& reason) {
-  // Store code and reason.
-  close_code_ = code;
-  std::string reason_string = reason.utf8();
-  close_reason_ = new StringVar(
-      PpapiGlobals::Get()->GetModuleForInstance(pp_instance()), reason_string);
-
-  // TODO(toyoshim): Set close_was_clean_.
-
-  // Handle state transition and invoking callback.
-  DCHECK_NE(PP_WEBSOCKETREADYSTATE_CLOSED_DEV, state_);
-  PP_WebSocketReadyState_Dev state = state_;
-  state_ = PP_WEBSOCKETREADYSTATE_CLOSED_DEV;
-
-  if (state == PP_WEBSOCKETREADYSTATE_CONNECTING_DEV)
-    PP_RunAndClearCompletionCallback(&connect_callback_, PP_OK);
-
-  if (state == PP_WEBSOCKETREADYSTATE_CLOSING_DEV)
-    PP_RunAndClearCompletionCallback(&close_callback_, PP_OK);
-}
-
-int32_t PPB_WebSocket_Impl::DoReceive() {
-  // TODO(toyoshim): Check state.
-
-  if (!receive_callback_var_)
-    return PP_OK;
-
-  *receive_callback_var_ = received_messages_.front();
-  received_messages_.pop();
-  receive_callback_var_ = NULL;
-  wait_for_receive_ = false;
-  return PP_OK;
+  // TODO(toyoshim): Implement it.
+  return PP_MakeUndefined();
 }
 
 }  // namespace ppapi
 }  // namespace webkit