| // Copyright 2014 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_SERVER_SOCKET_POSIX_H_ |
| #define NET_SOCKET_UNIX_DOMAIN_SERVER_SOCKET_POSIX_H_ |
| |
| #include <sys/types.h> |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "net/base/net_export.h" |
| #include "net/socket/server_socket.h" |
| #include "net/socket/socket_descriptor.h" |
| |
| namespace net { |
| |
| class SocketLibevent; |
| |
| // Unix Domain Server Socket Implementation. Supports abstract namespaces on |
| // Linux and Android. |
| class NET_EXPORT UnixDomainServerSocket : public ServerSocket { |
| public: |
| // Credentials of a peer process connected to the socket. |
| struct NET_EXPORT Credentials { |
| #if defined(OS_LINUX) || defined(OS_ANDROID) |
| // Linux/Android API provides more information about the connected peer |
| // than Windows/OS X. It's useful for permission-based authorization on |
| // Android. |
| pid_t process_id; |
| #endif |
| uid_t user_id; |
| gid_t group_id; |
| }; |
| |
| // Callback that returns whether the already connected client, identified by |
| // its credentials, is allowed to keep the connection open. Note that |
| // the socket is closed immediately in case the callback returns false. |
| typedef base::Callback<bool (const Credentials&)> AuthCallback; |
| |
| UnixDomainServerSocket(const AuthCallback& auth_callack, |
| bool use_abstract_namespace); |
| ~UnixDomainServerSocket() override; |
| |
| // Gets credentials of peer to check permissions. |
| static bool GetPeerCredentials(SocketDescriptor socket_fd, |
| Credentials* credentials); |
| |
| // ServerSocket implementation. |
| int Listen(const IPEndPoint& address, int backlog) override; |
| int ListenWithAddressAndPort(const std::string& unix_domain_path, |
| uint16 port_unused, |
| int backlog) override; |
| int GetLocalAddress(IPEndPoint* address) const override; |
| int Accept(scoped_ptr<StreamSocket>* socket, |
| const CompletionCallback& callback) override; |
| |
| // Accepts an incoming connection on |listen_socket_|, but passes back |
| // a raw SocketDescriptor instead of a StreamSocket. |
| int AcceptSocketDescriptor(SocketDescriptor* socket_descriptor, |
| const CompletionCallback& callback); |
| |
| private: |
| // A callback to wrap the setting of the out-parameter to Accept(). |
| // This allows the internal machinery of that call to be implemented in |
| // a manner that's agnostic to the caller's desired output. |
| typedef base::Callback<void(scoped_ptr<SocketLibevent>)> SetterCallback; |
| |
| int DoAccept(const SetterCallback& setter_callback, |
| const CompletionCallback& callback); |
| void AcceptCompleted(const SetterCallback& setter_callback, |
| const CompletionCallback& callback, |
| int rv); |
| bool AuthenticateAndGetStreamSocket(const SetterCallback& setter_callback); |
| |
| scoped_ptr<SocketLibevent> listen_socket_; |
| const AuthCallback auth_callback_; |
| const bool use_abstract_namespace_; |
| |
| scoped_ptr<SocketLibevent> accept_socket_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UnixDomainServerSocket); |
| }; |
| |
| } // namespace net |
| |
| #endif // NET_SOCKET_UNIX_DOMAIN_SOCKET_POSIX_H_ |