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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "ipc/ipc_channel_factory.h" | 5 #include "ipc/ipc_channel_factory.h" |
| 6 | 6 |
| 7 #include "base/file_util.h" | 7 #include "base/file_util.h" |
| 8 #include "base/files/scoped_file.h" |
| 8 #include "base/logging.h" | 9 #include "base/logging.h" |
| 9 #include "ipc/unix_domain_socket_util.h" | 10 #include "ipc/unix_domain_socket_util.h" |
| 10 | 11 |
| 11 namespace IPC { | 12 namespace IPC { |
| 12 | 13 |
| 13 ChannelFactory::ChannelFactory(const base::FilePath& path, Delegate* delegate) | 14 ChannelFactory::ChannelFactory(const base::FilePath& path, Delegate* delegate) |
| 14 : path_(path), delegate_(delegate), listen_fd_(-1) { | 15 : path_(path), delegate_(delegate), listen_fd_(-1) { |
| 15 DCHECK(delegate_); | 16 DCHECK(delegate_); |
| 16 CreateSocket(); | 17 CreateSocket(); |
| 17 } | 18 } |
| (...skipping 26 matching lines...) Expand all Loading... |
| 44 | 45 |
| 45 // Called by libevent when we can read from the fd without blocking. | 46 // Called by libevent when we can read from the fd without blocking. |
| 46 void ChannelFactory::OnFileCanReadWithoutBlocking(int fd) { | 47 void ChannelFactory::OnFileCanReadWithoutBlocking(int fd) { |
| 47 DCHECK(fd == listen_fd_); | 48 DCHECK(fd == listen_fd_); |
| 48 int new_fd = -1; | 49 int new_fd = -1; |
| 49 if (!ServerAcceptConnection(listen_fd_, &new_fd)) { | 50 if (!ServerAcceptConnection(listen_fd_, &new_fd)) { |
| 50 Close(); | 51 Close(); |
| 51 delegate_->OnListenError(); | 52 delegate_->OnListenError(); |
| 52 return; | 53 return; |
| 53 } | 54 } |
| 55 base::ScopedFD scoped_fd(new_fd); |
| 54 | 56 |
| 55 if (new_fd < 0) { | 57 if (!scoped_fd.is_valid()) { |
| 56 // The accept() failed, but not in such a way that the factory needs to be | 58 // The accept() failed, but not in such a way that the factory needs to be |
| 57 // shut down. | 59 // shut down. |
| 58 return; | 60 return; |
| 59 } | 61 } |
| 60 | 62 |
| 61 file_util::ScopedFD scoped_fd(&new_fd); | |
| 62 | |
| 63 // Verify that the IPC channel peer is running as the same user. | 63 // Verify that the IPC channel peer is running as the same user. |
| 64 if (!IsPeerAuthorized(new_fd)) | 64 if (!IsPeerAuthorized(scoped_fd.get())) |
| 65 return; | 65 return; |
| 66 | 66 |
| 67 ChannelHandle handle(std::string(), | 67 ChannelHandle handle(std::string(), |
| 68 base::FileDescriptor(*scoped_fd.release(), true)); | 68 base::FileDescriptor(scoped_fd.release(), true)); |
| 69 delegate_->OnClientConnected(handle); | 69 delegate_->OnClientConnected(handle); |
| 70 } | 70 } |
| 71 | 71 |
| 72 void ChannelFactory::OnFileCanWriteWithoutBlocking(int fd) { | 72 void ChannelFactory::OnFileCanWriteWithoutBlocking(int fd) { |
| 73 NOTREACHED() << "Listen fd should never be writable."; | 73 NOTREACHED() << "Listen fd should never be writable."; |
| 74 } | 74 } |
| 75 | 75 |
| 76 void ChannelFactory::Close() { | 76 void ChannelFactory::Close() { |
| 77 if (listen_fd_ < 0) | 77 if (listen_fd_ < 0) |
| 78 return; | 78 return; |
| 79 if (IGNORE_EINTR(close(listen_fd_)) < 0) | 79 if (IGNORE_EINTR(close(listen_fd_)) < 0) |
| 80 PLOG(ERROR) << "close"; | 80 PLOG(ERROR) << "close"; |
| 81 listen_fd_ = -1; | 81 listen_fd_ = -1; |
| 82 if (unlink(path_.value().c_str()) < 0) | 82 if (unlink(path_.value().c_str()) < 0) |
| 83 PLOG(ERROR) << "unlink"; | 83 PLOG(ERROR) << "unlink"; |
| 84 | 84 |
| 85 // Unregister libevent for the listening socket and close it. | 85 // Unregister libevent for the listening socket and close it. |
| 86 server_listen_connection_watcher_.StopWatchingFileDescriptor(); | 86 server_listen_connection_watcher_.StopWatchingFileDescriptor(); |
| 87 } | 87 } |
| 88 | 88 |
| 89 } // namespace IPC | 89 } // namespace IPC |
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