Revert 112693 - committed before review was done - Landing 8688002: PPB_TCPSocket_Private/PPB_UDP...

ppapi/shared_impl/private/udp_socket_private_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 "ppapi/shared_impl/private/udp_socket_private_impl.h"
-
-#include <string.h>
-
-#include <algorithm>
-
-#include "base/basictypes.h"
-#include "base/bind.h"
-#include "base/logging.h"
-#include "base/message_loop.h"
-#include "ppapi/c/pp_completion_callback.h"
-#include "ppapi/c/pp_errors.h"
-
-namespace ppapi {
-
-namespace {
-
-void AbortCallback(PP_CompletionCallback callback) {
-  PP_RunCompletionCallback(&callback, PP_ERROR_ABORTED);
-}
-
-}  // namespace
-
-const int32_t UDPSocketPrivateImpl::kMaxReadSize = 1024 * 1024;
-const int32_t UDPSocketPrivateImpl::kMaxWriteSize = 1024 * 1024;
-
-UDPSocketPrivateImpl::UDPSocketPrivateImpl(const HostResource& resource,
-                                           uint32 socket_id)
-    : Resource(resource) {
-  Init(socket_id);
-}
-
-UDPSocketPrivateImpl::UDPSocketPrivateImpl(PP_Instance instance,
-                                           uint32 socket_id)
-    : Resource(instance) {
-  Init(socket_id);
-}
-
-UDPSocketPrivateImpl::~UDPSocketPrivateImpl() {
-}
-
-thunk::PPB_UDPSocket_Private_API*
-UDPSocketPrivateImpl::AsPPB_UDPSocket_Private_API() {
-  return this;
-}
-
-int32_t UDPSocketPrivateImpl::Bind(const PP_NetAddress_Private* addr,
-                                   PP_CompletionCallback callback) {
-  if (!addr || !callback.func)
-    return PP_ERROR_BADARGUMENT;
-  if (bound_ || closed_)
-    return PP_ERROR_FAILED;
-  if (bind_callback_.func)
-    return PP_ERROR_INPROGRESS;
-  // TODO(dmichael): use some other strategy for determining if an
-  // operation is in progress
-
-  bind_callback_ = callback;
-
-  // Send the request, the browser will call us back via BindACK.
-  SendBind(*addr);
-  return PP_OK_COMPLETIONPENDING;
-}
-
-int32_t UDPSocketPrivateImpl::RecvFrom(char* buffer,
-                                       int32_t num_bytes,
-                                       PP_CompletionCallback callback) {
-  if (!buffer || num_bytes <= 0 || !callback.func)
-    return PP_ERROR_BADARGUMENT;
-  if (!bound_)
-    return PP_ERROR_FAILED;
-  if (recvfrom_callback_.func)
-    return PP_ERROR_INPROGRESS;
-
-  read_buffer_ = buffer;
-  bytes_to_read_ = std::min(num_bytes, kMaxReadSize);
-  recvfrom_callback_ = callback;
-
-  // Send the request, the browser will call us back via RecvFromACK.
-  SendRecvFrom(bytes_to_read_);
-  return PP_OK_COMPLETIONPENDING;
-}
-
-PP_Bool UDPSocketPrivateImpl::GetRecvFromAddress(PP_NetAddress_Private* addr) {
-  if (!addr)
-    return PP_FALSE;
-
-  *addr = recvfrom_addr_;
-  return PP_TRUE;
-}
-
-int32_t UDPSocketPrivateImpl::SendTo(const char* buffer,
-                                     int32_t num_bytes,
-                                     const PP_NetAddress_Private* addr,
-                                     PP_CompletionCallback callback) {
-  if (!buffer || num_bytes <= 0 || !addr || !callback.func)
-    return PP_ERROR_BADARGUMENT;
-  if (!bound_)
-    return PP_ERROR_FAILED;
-  if (sendto_callback_.func)
-    return PP_ERROR_INPROGRESS;
-
-  if (num_bytes > kMaxWriteSize)
-    num_bytes = kMaxWriteSize;
-
-  sendto_callback_ = callback;
-
-  // Send the request, the browser will call us back via SendToACK.
-  SendSendTo(std::string(buffer, num_bytes), *addr);
-  return PP_OK_COMPLETIONPENDING;
-}
-
-void UDPSocketPrivateImpl::Close() {
-  if(closed_)
-    return;
-
-  bound_ = false;
-  closed_ = true;
-
-  SendClose();
-
-  socket_id_ = 0;
-
-  PostAbortAndClearIfNecessary(&bind_callback_);
-  PostAbortAndClearIfNecessary(&recvfrom_callback_);
-  PostAbortAndClearIfNecessary(&sendto_callback_);
-}
-
-void UDPSocketPrivateImpl::OnBindCompleted(bool succeeded) {
-  if (!bind_callback_.func) {
-    NOTREACHED();
-    return;
-  }
-
-  if (succeeded)
-    bound_ = true;
-
-  PP_RunAndClearCompletionCallback(&bind_callback_,
-                                   succeeded ? PP_OK : PP_ERROR_FAILED);
-}
-
-void UDPSocketPrivateImpl::OnRecvFromCompleted(
-    bool succeeded,
-    const std::string& data,
-    const PP_NetAddress_Private& addr) {
-  if (!recvfrom_callback_.func || !read_buffer_) {
-    NOTREACHED();
-    return;
-  }
-
-  if (succeeded) {
-    CHECK_LE(static_cast<int32_t>(data.size()), bytes_to_read_);
-    if (!data.empty())
-      memcpy(read_buffer_, data.c_str(), data.size());
-  }
-  read_buffer_ = NULL;
-  bytes_to_read_ = -1;
-  recvfrom_addr_ = addr;
-
-  PP_RunAndClearCompletionCallback(
-      &recvfrom_callback_,
-      succeeded ? static_cast<int32_t>(data.size()) :
-      static_cast<int32_t>(PP_ERROR_FAILED));
-}
-
-void UDPSocketPrivateImpl::OnSendToCompleted(bool succeeded,
-                                             int32_t bytes_written) {
-  if (!sendto_callback_.func) {
-    NOTREACHED();
-    return;
-  }
-
-  PP_RunAndClearCompletionCallback(
-      &sendto_callback_,
-      succeeded ? bytes_written : static_cast<int32_t>(PP_ERROR_FAILED));
-}
-
-void UDPSocketPrivateImpl::Init(uint32 socket_id) {
-  DCHECK(socket_id != 0);
-  socket_id_ = socket_id;
-  bound_ = false;
-  closed_ = false;
-  bind_callback_ = PP_BlockUntilComplete();
-  recvfrom_callback_ = PP_BlockUntilComplete();
-  sendto_callback_ = PP_BlockUntilComplete();
-  read_buffer_ = NULL;
-  bytes_to_read_ = -1;
-
-  recvfrom_addr_.size = 0;
-  memset(recvfrom_addr_.data, 0,
-         arraysize(recvfrom_addr_.data) * sizeof(*recvfrom_addr_.data));
-}
-
-void UDPSocketPrivateImpl::PostAbortAndClearIfNecessary(
-    PP_CompletionCallback* callback) {
-  DCHECK(callback);
-
-  if (callback->func) {
-    MessageLoop::current()->PostTask(FROM_HERE,
-                                     base::Bind(&AbortCallback, *callback));
-    *callback = PP_BlockUntilComplete();
-  }
-}
-
-}  // namespace ppapi