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// 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/tcp_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 {
const int32_t TCPSocketPrivateImpl::kMaxReadSize = 1024 * 1024;
const int32_t TCPSocketPrivateImpl::kMaxWriteSize = 1024 * 1024;
TCPSocketPrivateImpl::TCPSocketPrivateImpl(PP_Instance instance,
uint32 socket_id)
: Resource(instance) {
Init(socket_id);
}
TCPSocketPrivateImpl::TCPSocketPrivateImpl(const HostResource& resource,
uint32 socket_id)
: Resource(resource) {
Init(socket_id);
}
TCPSocketPrivateImpl::~TCPSocketPrivateImpl() {
}
thunk::PPB_TCPSocket_Private_API*
TCPSocketPrivateImpl::AsPPB_TCPSocket_Private_API() {
return this;
}
int32_t TCPSocketPrivateImpl::Connect(const char* host,
uint16_t port,
PP_CompletionCallback callback) {
if (!host)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (connection_state_ != BEFORE_CONNECT)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(connect_callback_))
return PP_ERROR_INPROGRESS; // Can only have one pending request.
connect_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via ConnectACK.
SendConnect(host, port);
return PP_OK_COMPLETIONPENDING;
}
int32_t TCPSocketPrivateImpl::ConnectWithNetAddress(
const PP_NetAddress_Private* addr,
PP_CompletionCallback callback) {
if (!addr)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (connection_state_ != BEFORE_CONNECT)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(connect_callback_))
return PP_ERROR_INPROGRESS; // Can only have one pending request.
connect_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via ConnectACK.
SendConnectWithNetAddress(*addr);
return PP_OK_COMPLETIONPENDING;
}
PP_Bool TCPSocketPrivateImpl::GetLocalAddress(
PP_NetAddress_Private* local_addr) {
if (!IsConnected() || !local_addr)
return PP_FALSE;
*local_addr = local_addr_;
return PP_TRUE;
}
PP_Bool TCPSocketPrivateImpl::GetRemoteAddress(
PP_NetAddress_Private* remote_addr) {
if (!IsConnected() || !remote_addr)
return PP_FALSE;
*remote_addr = remote_addr_;
return PP_TRUE;
}
int32_t TCPSocketPrivateImpl::SSLHandshake(const char* server_name,
uint16_t server_port,
PP_CompletionCallback callback) {
if (!server_name)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (connection_state_ != CONNECTED)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(ssl_handshake_callback_) ||
TrackedCallback::IsPending(read_callback_) ||
TrackedCallback::IsPending(write_callback_))
return PP_ERROR_INPROGRESS;
ssl_handshake_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via SSLHandshakeACK.
SendSSLHandshake(server_name, server_port);
return PP_OK_COMPLETIONPENDING;
}
int32_t TCPSocketPrivateImpl::Read(char* buffer,
int32_t bytes_to_read,
PP_CompletionCallback callback) {
if (!buffer || bytes_to_read <= 0)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (!IsConnected())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(read_callback_) ||
TrackedCallback::IsPending(ssl_handshake_callback_))
return PP_ERROR_INPROGRESS;
// TODO(dmichael): use some other strategy for determining if an
// operation is in progress
read_buffer_ = buffer;
bytes_to_read_ = std::min(bytes_to_read, kMaxReadSize);
read_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via ReadACK.
SendRead(bytes_to_read_);
return PP_OK_COMPLETIONPENDING;
}
int32_t TCPSocketPrivateImpl::Write(const char* buffer,
int32_t bytes_to_write,
PP_CompletionCallback callback) {
if (!buffer || bytes_to_write <= 0)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (!IsConnected())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(write_callback_) ||
TrackedCallback::IsPending(ssl_handshake_callback_))
return PP_ERROR_INPROGRESS;
if (bytes_to_write > kMaxWriteSize)
bytes_to_write = kMaxWriteSize;
write_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via WriteACK.
SendWrite(std::string(buffer, bytes_to_write));
return PP_OK_COMPLETIONPENDING;
}
void TCPSocketPrivateImpl::Disconnect() {
if (connection_state_ == DISCONNECTED)
return;
connection_state_ = DISCONNECTED;
SendDisconnect();
socket_id_ = 0;
PostAbortIfNecessary(&connect_callback_);
PostAbortIfNecessary(&ssl_handshake_callback_);
PostAbortIfNecessary(&read_callback_);
PostAbortIfNecessary(&write_callback_);
read_buffer_ = NULL;
bytes_to_read_ = -1;
}
void TCPSocketPrivateImpl::OnConnectCompleted(
bool succeeded,
const PP_NetAddress_Private& local_addr,
const PP_NetAddress_Private& remote_addr) {
if (connection_state_ != BEFORE_CONNECT ||
!TrackedCallback::IsPending(connect_callback_)) {
NOTREACHED();
return;
}
if (succeeded) {
local_addr_ = local_addr;
remote_addr_ = remote_addr;
connection_state_ = CONNECTED;
}
TrackedCallback::ClearAndRun(&connect_callback_,
succeeded ? PP_OK : PP_ERROR_FAILED);
}
void TCPSocketPrivateImpl::OnSSLHandshakeCompleted(bool succeeded) {
if (connection_state_ != CONNECTED ||
!TrackedCallback::IsPending(ssl_handshake_callback_)) {
NOTREACHED();
return;
}
if (succeeded) {
connection_state_ = SSL_CONNECTED;
TrackedCallback::ClearAndRun(&ssl_handshake_callback_, PP_OK);
} else {
TrackedCallback::ClearAndRun(&ssl_handshake_callback_, PP_ERROR_FAILED);
Disconnect();
}
}
void TCPSocketPrivateImpl::OnReadCompleted(bool succeeded,
const std::string& data) {
if (!TrackedCallback::IsPending(read_callback_) || !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;
TrackedCallback::ClearAndRun(
&read_callback_,
succeeded ? static_cast<int32_t>(data.size()) :
static_cast<int32_t>(PP_ERROR_FAILED));
}
void TCPSocketPrivateImpl::OnWriteCompleted(bool succeeded,
int32_t bytes_written) {
if (!TrackedCallback::IsPending(write_callback_) ||
(succeeded && bytes_written < 0)) {
NOTREACHED();
return;
}
TrackedCallback::ClearAndRun(
&write_callback_,
succeeded ? bytes_written : static_cast<int32_t>(PP_ERROR_FAILED));
}
void TCPSocketPrivateImpl::Init(uint32 socket_id) {
DCHECK(socket_id != 0);
socket_id_ = socket_id;
connection_state_ = BEFORE_CONNECT;
read_buffer_ = NULL;
bytes_to_read_ = -1;
local_addr_.size = 0;
memset(local_addr_.data, 0,
arraysize(local_addr_.data) * sizeof(*local_addr_.data));
remote_addr_.size = 0;
memset(remote_addr_.data, 0,
arraysize(remote_addr_.data) * sizeof(*remote_addr_.data));
}
bool TCPSocketPrivateImpl::IsConnected() const {
return connection_state_ == CONNECTED || connection_state_ == SSL_CONNECTED;
}
void TCPSocketPrivateImpl::PostAbortIfNecessary(
scoped_refptr<TrackedCallback>* callback) {
if (callback->get())
(*callback)->PostAbort();
}
} // namespace ppapi
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