1 files changed, 126 insertions, 0 deletions
diff --git a/chromium/net/socket/unix_domain_socket_posix.h b/chromium/net/socket/unix_domain_socket_posix.h
new file mode 100644
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+++ b/chromium/net/socket/unix_domain_socket_posix.h
@@ -0,0 +1,126 @@
+// Copyright (c) 2012 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.
+
+#ifndef NET_SOCKET_UNIX_DOMAIN_SOCKET_POSIX_H_
+#define NET_SOCKET_UNIX_DOMAIN_SOCKET_POSIX_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "build/build_config.h"
+#include "net/base/net_export.h"
+#include "net/socket/stream_listen_socket.h"
+
+#if defined(OS_ANDROID) || defined(OS_LINUX)
+// Feature only supported on Linux currently. This lets the Unix Domain Socket
+// not be backed by the file system.
+#define SOCKET_ABSTRACT_NAMESPACE_SUPPORTED
+#endif
+
+namespace net {
+
+// Unix Domain Socket Implementation. Supports abstract namespaces on Linux.
+class NET_EXPORT UnixDomainSocket : public StreamListenSocket {
+ public:
+  // Callback that returns whether the already connected client, identified by
+  // its process |user_id| and |group_id|, is allowed to keep the connection
+  // open. Note that the socket is closed immediately in case the callback
+  // returns false.
+  typedef base::Callback<bool (uid_t user_id, gid_t group_id)> AuthCallback;
+
+  // Returns an authentication callback that always grants access for
+  // convenience in case you don't want to use authentication.
+  static AuthCallback NoAuthentication();
+
+  // Note that the returned UnixDomainSocket instance does not take ownership of
+  // |del|.
+  static scoped_refptr<UnixDomainSocket> CreateAndListen(
+      const std::string& path,
+      StreamListenSocket::Delegate* del,
+      const AuthCallback& auth_callback);
+
+#if defined(SOCKET_ABSTRACT_NAMESPACE_SUPPORTED)
+  // Same as above except that the created socket uses the abstract namespace
+  // which is a Linux-only feature. If |fallback_path| is not empty,
+  // make the second attempt with the provided fallback name.
+  static scoped_refptr<UnixDomainSocket> CreateAndListenWithAbstractNamespace(
+      const std::string& path,
+      const std::string& fallback_path,
+      StreamListenSocket::Delegate* del,
+      const AuthCallback& auth_callback);
+#endif
+
+ private:
+  UnixDomainSocket(SocketDescriptor s,
+                   StreamListenSocket::Delegate* del,
+                   const AuthCallback& auth_callback);
+  virtual ~UnixDomainSocket();
+
+  static UnixDomainSocket* CreateAndListenInternal(
+      const std::string& path,
+      const std::string& fallback_path,
+      StreamListenSocket::Delegate* del,
+      const AuthCallback& auth_callback,
+      bool use_abstract_namespace);
+
+  static SocketDescriptor CreateAndBind(const std::string& path,
+                                        bool use_abstract_namespace);
+
+  // StreamListenSocket:
+  virtual void Accept() OVERRIDE;
+
+  AuthCallback auth_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(UnixDomainSocket);
+};
+
+// Factory that can be used to instantiate UnixDomainSocket.
+class NET_EXPORT UnixDomainSocketFactory : public StreamListenSocketFactory {
+ public:
+  // Note that this class does not take ownership of the provided delegate.
+  UnixDomainSocketFactory(const std::string& path,
+                          const UnixDomainSocket::AuthCallback& auth_callback);
+  virtual ~UnixDomainSocketFactory();
+
+  // StreamListenSocketFactory:
+  virtual scoped_refptr<StreamListenSocket> CreateAndListen(
+      StreamListenSocket::Delegate* delegate) const OVERRIDE;
+
+ protected:
+  const std::string path_;
+  const UnixDomainSocket::AuthCallback auth_callback_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UnixDomainSocketFactory);
+};
+
+#if defined(SOCKET_ABSTRACT_NAMESPACE_SUPPORTED)
+// Use this factory to instantiate UnixDomainSocket using the abstract
+// namespace feature (only supported on Linux).
+class NET_EXPORT UnixDomainSocketWithAbstractNamespaceFactory
+    : public UnixDomainSocketFactory {
+ public:
+  UnixDomainSocketWithAbstractNamespaceFactory(
+      const std::string& path,
+      const std::string& fallback_path,
+      const UnixDomainSocket::AuthCallback& auth_callback);
+  virtual ~UnixDomainSocketWithAbstractNamespaceFactory();
+
+  // UnixDomainSocketFactory:
+  virtual scoped_refptr<StreamListenSocket> CreateAndListen(
+      StreamListenSocket::Delegate* delegate) const OVERRIDE;
+
+ private:
+  std::string fallback_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(UnixDomainSocketWithAbstractNamespaceFactory);
+};
+#endif
+
+}  // namespace net
+
+#endif  // NET_SOCKET_UNIX_DOMAIN_SOCKET_POSIX_H_