From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 ipc/unixfd/UnixSocketWatcher.cpp | 136 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 ipc/unixfd/UnixSocketWatcher.cpp

(limited to 'ipc/unixfd/UnixSocketWatcher.cpp')

diff --git a/ipc/unixfd/UnixSocketWatcher.cpp b/ipc/unixfd/UnixSocketWatcher.cpp
new file mode 100644
index 000000000..2ce32e93d
--- /dev/null
+++ b/ipc/unixfd/UnixSocketWatcher.cpp
@@ -0,0 +1,136 @@
+/* -*- 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 (TEMP_FAILURE_RETRY(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);
+      return NS_OK;
+    }
+    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) {
+    OnSocketCanAcceptWithoutBlocking();
+  } 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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