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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <fcntl.h>
#include "UnixSocketWatcher.h"
namespace mozilla {
namespace ipc {
UnixSocketWatcher::~UnixSocketWatcher()
{
}
void UnixSocketWatcher::Close()
{
MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
mConnectionStatus = SOCKET_IS_DISCONNECTED;
UnixFdWatcher::Close();
}
nsresult
UnixSocketWatcher::Connect(const struct sockaddr* aAddr, socklen_t aAddrLen)
{
MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
MOZ_ASSERT(IsOpen());
MOZ_ASSERT(aAddr || !aAddrLen);
if (connect(GetFd(), aAddr, aAddrLen) < 0) {
if (errno == EINPROGRESS) {
mConnectionStatus = SOCKET_IS_CONNECTING;
// Set up a write watch to receive the connect signal
AddWatchers(WRITE_WATCHER, false);
} else {
OnError("connect", errno);
}
return NS_ERROR_FAILURE;
}
mConnectionStatus = SOCKET_IS_CONNECTED;
OnConnected();
return NS_OK;
}
nsresult
UnixSocketWatcher::Listen(const struct sockaddr* aAddr, socklen_t aAddrLen)
{
MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
MOZ_ASSERT(IsOpen());
MOZ_ASSERT(aAddr || !aAddrLen);
if (mConnectionStatus == SOCKET_IS_DISCONNECTED) {
// We init the socket descriptor when we listen for the first time.
if (bind(GetFd(), aAddr, aAddrLen) < 0) {
OnError("bind", errno);
return NS_ERROR_FAILURE;
}
if (listen(GetFd(), 1) < 0) {
OnError("listen", errno);
return NS_ERROR_FAILURE;
}
}
mConnectionStatus = SOCKET_IS_LISTENING;
OnListening();
return NS_OK;
}
UnixSocketWatcher::UnixSocketWatcher(MessageLoop* aIOLoop)
: UnixFdWatcher(aIOLoop)
, mConnectionStatus(SOCKET_IS_DISCONNECTED)
{
}
UnixSocketWatcher::UnixSocketWatcher(MessageLoop* aIOLoop, int aFd,
ConnectionStatus aConnectionStatus)
: UnixFdWatcher(aIOLoop, aFd)
, mConnectionStatus(aConnectionStatus)
{
}
void
UnixSocketWatcher::SetSocket(int aFd, ConnectionStatus aConnectionStatus)
{
MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
SetFd(aFd);
mConnectionStatus = aConnectionStatus;
}
void
UnixSocketWatcher::OnFileCanReadWithoutBlocking(int aFd)
{
MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
MOZ_ASSERT(aFd == GetFd());
if (mConnectionStatus == SOCKET_IS_CONNECTED) {
OnSocketCanReceiveWithoutBlocking();
} else if (mConnectionStatus == SOCKET_IS_LISTENING) {
sockaddr_any addr;
socklen_t addrLen = sizeof(addr);
int fd = TEMP_FAILURE_RETRY(accept(GetFd(),
reinterpret_cast<struct sockaddr*>(&addr), &addrLen));
if (fd < 0) {
OnError("accept", errno);
} else {
OnAccepted(fd, &addr, addrLen);
}
} else {
NS_NOTREACHED("invalid connection state for reading");
}
}
void
UnixSocketWatcher::OnFileCanWriteWithoutBlocking(int aFd)
{
MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
MOZ_ASSERT(aFd == GetFd());
if (mConnectionStatus == SOCKET_IS_CONNECTED) {
OnSocketCanSendWithoutBlocking();
} else if (mConnectionStatus == SOCKET_IS_CONNECTING) {
RemoveWatchers(WRITE_WATCHER);
int error = 0;
socklen_t len = sizeof(error);
if (getsockopt(GetFd(), SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
OnError("getsockopt", errno);
} else if (error) {
OnError("connect", error);
} else {
mConnectionStatus = SOCKET_IS_CONNECTED;
OnConnected();
}
} else {
NS_NOTREACHED("invalid connection state for writing");
}
}
}
}
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