Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "ipc/src/unix_socket.h" |
| 18 | |
| 19 | #include <errno.h> |
| 20 | #include <fcntl.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | #include <sys/socket.h> |
| 24 | #include <sys/stat.h> |
| 25 | #include <sys/types.h> |
| 26 | #include <sys/un.h> |
| 27 | #include <unistd.h> |
| 28 | |
| 29 | #include <algorithm> |
| 30 | #include <memory> |
| 31 | |
Oystein Eftevaag | dd727e4 | 2017-12-05 08:49:55 -0800 | [diff] [blame^] | 32 | #include "perfetto_base/build_config.h" |
| 33 | #include "perfetto_base/logging.h" |
| 34 | #include "perfetto_base/task_runner.h" |
| 35 | #include "perfetto_base/utils.h" |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 36 | |
Primiano Tucci | c2025af | 2017-11-20 12:47:49 +0000 | [diff] [blame] | 37 | #if BUILDFLAG(OS_MACOSX) |
| 38 | #include <sys/ucred.h> |
| 39 | #endif |
| 40 | |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 41 | namespace perfetto { |
| 42 | namespace ipc { |
| 43 | |
| 44 | // TODO(primiano): Add ThreadChecker to methods of this class. |
| 45 | |
| 46 | namespace { |
| 47 | |
| 48 | // MSG_NOSIGNAL is not supported on Mac OS X, but in that case the socket is |
| 49 | // created with SO_NOSIGPIPE (See InitializeSocket()). |
| 50 | #if BUILDFLAG(OS_MACOSX) |
| 51 | constexpr int kNoSigPipe = 0; |
| 52 | #else |
| 53 | constexpr int kNoSigPipe = MSG_NOSIGNAL; |
| 54 | #endif |
| 55 | |
| 56 | // Android takes an int instead of socklen_t for the control buffer size. |
| 57 | #if BUILDFLAG(OS_ANDROID) |
| 58 | using CBufLenType = size_t; |
| 59 | #else |
| 60 | using CBufLenType = socklen_t; |
| 61 | #endif |
| 62 | |
| 63 | bool MakeSockAddr(const std::string& socket_name, |
| 64 | sockaddr_un* addr, |
| 65 | socklen_t* addr_size) { |
| 66 | memset(addr, 0, sizeof(*addr)); |
| 67 | const size_t name_len = socket_name.size(); |
| 68 | if (name_len >= sizeof(addr->sun_path)) { |
| 69 | errno = ENAMETOOLONG; |
| 70 | return false; |
| 71 | } |
| 72 | memcpy(addr->sun_path, socket_name.data(), name_len); |
| 73 | if (addr->sun_path[0] == '@') |
| 74 | addr->sun_path[0] = '\0'; |
| 75 | addr->sun_family = AF_UNIX; |
| 76 | *addr_size = static_cast<socklen_t>( |
| 77 | __builtin_offsetof(sockaddr_un, sun_path) + name_len + 1); |
| 78 | return true; |
| 79 | } |
| 80 | |
| 81 | } // namespace |
| 82 | |
| 83 | // static |
| 84 | std::unique_ptr<UnixSocket> UnixSocket::Listen(const std::string& socket_name, |
| 85 | EventListener* event_listener, |
| 86 | base::TaskRunner* task_runner) { |
| 87 | std::unique_ptr<UnixSocket> sock(new UnixSocket(event_listener, task_runner)); |
| 88 | sock->DoListen(socket_name); |
| 89 | return sock; |
| 90 | } |
| 91 | |
| 92 | // static |
| 93 | std::unique_ptr<UnixSocket> UnixSocket::Connect(const std::string& socket_name, |
| 94 | EventListener* event_listener, |
| 95 | base::TaskRunner* task_runner) { |
| 96 | std::unique_ptr<UnixSocket> sock(new UnixSocket(event_listener, task_runner)); |
| 97 | sock->DoConnect(socket_name); |
| 98 | return sock; |
| 99 | } |
| 100 | |
| 101 | UnixSocket::UnixSocket(EventListener* event_listener, |
| 102 | base::TaskRunner* task_runner) |
| 103 | : UnixSocket(event_listener, task_runner, base::ScopedFile()) {} |
| 104 | |
| 105 | UnixSocket::UnixSocket(EventListener* event_listener, |
| 106 | base::TaskRunner* task_runner, |
| 107 | base::ScopedFile adopt_fd) |
| 108 | : event_listener_(event_listener), |
| 109 | task_runner_(task_runner), |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 110 | weak_ptr_factory_(this) { |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 111 | if (adopt_fd) { |
| 112 | // Only in the case of OnNewIncomingConnection(). |
| 113 | fd_ = std::move(adopt_fd); |
| 114 | state_ = State::kConnected; |
Primiano Tucci | c2025af | 2017-11-20 12:47:49 +0000 | [diff] [blame] | 115 | ReadPeerCredentials(); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 116 | } else { |
| 117 | fd_.reset(socket(AF_UNIX, SOCK_STREAM, 0)); |
| 118 | } |
| 119 | if (!fd_) { |
| 120 | last_error_ = errno; |
| 121 | return; |
| 122 | } |
| 123 | |
| 124 | #if BUILDFLAG(OS_MACOSX) |
| 125 | const int no_sigpipe = 1; |
| 126 | setsockopt(*fd_, SOL_SOCKET, SO_NOSIGPIPE, &no_sigpipe, sizeof(no_sigpipe)); |
| 127 | #endif |
| 128 | // There is no reason why a socket should outlive the process in case of |
| 129 | // exec() by default, this is just working around a broken unix design. |
Sami Kyostila | 2c6c2f5 | 2017-11-21 16:08:16 +0000 | [diff] [blame] | 130 | int fcntl_res = fcntl(*fd_, F_SETFD, FD_CLOEXEC); |
| 131 | PERFETTO_CHECK(fcntl_res == 0); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 132 | |
| 133 | // Set non-blocking mode. |
| 134 | int flags = fcntl(*fd_, F_GETFL, 0); |
| 135 | flags |= O_NONBLOCK; |
| 136 | fcntl_res = fcntl(fd(), F_SETFL, flags); |
| 137 | PERFETTO_CHECK(fcntl_res == 0); |
| 138 | |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 139 | base::WeakPtr<UnixSocket> weak_ptr = weak_ptr_factory_.GetWeakPtr(); |
| 140 | task_runner_->AddFileDescriptorWatch(*fd_, [weak_ptr]() { |
| 141 | if (weak_ptr) |
| 142 | weak_ptr->OnEvent(); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 143 | }); |
| 144 | } |
| 145 | |
| 146 | UnixSocket::~UnixSocket() { |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 147 | // The implicit dtor of |weak_ptr_factory_| will no-op pending callbacks. |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 148 | Shutdown(); |
| 149 | } |
| 150 | |
| 151 | // Called only by the Listen() static constructor. |
| 152 | void UnixSocket::DoListen(const std::string& socket_name) { |
| 153 | PERFETTO_DCHECK(state_ == State::kDisconnected); |
| 154 | if (!fd_) |
| 155 | return; // This is the only thing that can gracefully fail in the ctor. |
| 156 | |
| 157 | sockaddr_un addr; |
| 158 | socklen_t addr_size; |
| 159 | if (!MakeSockAddr(socket_name, &addr, &addr_size)) { |
| 160 | last_error_ = errno; |
| 161 | return; |
| 162 | } |
| 163 | |
| 164 | // Android takes an int as 3rd argument of bind() instead of socklen_t. |
| 165 | #if BUILDFLAG(OS_ANDROID) |
| 166 | const int bind_size = static_cast<int>(addr_size); |
| 167 | #else |
| 168 | const socklen_t bind_size = addr_size; |
| 169 | #endif |
| 170 | |
| 171 | if (bind(*fd_, reinterpret_cast<sockaddr*>(&addr), bind_size)) { |
| 172 | last_error_ = errno; |
| 173 | PERFETTO_DPLOG("bind()"); |
| 174 | return; |
| 175 | } |
| 176 | if (listen(*fd_, SOMAXCONN)) { |
| 177 | last_error_ = errno; |
| 178 | PERFETTO_DPLOG("listen()"); |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | last_error_ = 0; |
| 183 | state_ = State::kListening; |
| 184 | } |
| 185 | |
| 186 | // Called only by the Connect() static constructor. |
| 187 | void UnixSocket::DoConnect(const std::string& socket_name) { |
| 188 | PERFETTO_DCHECK(state_ == State::kDisconnected); |
| 189 | |
| 190 | // This is the only thing that can gracefully fail in the ctor. |
| 191 | if (!fd_) |
| 192 | return NotifyConnectionState(false); |
| 193 | |
| 194 | sockaddr_un addr; |
| 195 | socklen_t addr_size; |
| 196 | if (!MakeSockAddr(socket_name, &addr, &addr_size)) { |
| 197 | last_error_ = errno; |
| 198 | return NotifyConnectionState(false); |
| 199 | } |
| 200 | |
| 201 | int res = PERFETTO_EINTR( |
| 202 | connect(*fd_, reinterpret_cast<sockaddr*>(&addr), addr_size)); |
| 203 | if (res && errno != EINPROGRESS) { |
| 204 | last_error_ = errno; |
| 205 | return NotifyConnectionState(false); |
| 206 | } |
| 207 | |
| 208 | // At this point either |res| == 0 (the connect() succeeded) or started |
| 209 | // asynchronously (EINPROGRESS). |
| 210 | last_error_ = 0; |
| 211 | state_ = State::kConnecting; |
| 212 | |
| 213 | // Even if the socket is non-blocking, connecting to a UNIX socket can be |
| 214 | // acknowledged straight away rather than returning EINPROGRESS. In this case |
| 215 | // just trigger an OnEvent without waiting for the FD watch. That will poll |
| 216 | // the SO_ERROR and evolve the state into either kConnected or kDisconnected. |
| 217 | if (res == 0) { |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 218 | base::WeakPtr<UnixSocket> weak_ptr = weak_ptr_factory_.GetWeakPtr(); |
| 219 | task_runner_->PostTask([weak_ptr]() { |
| 220 | if (weak_ptr) |
| 221 | weak_ptr->OnEvent(); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 222 | }); |
| 223 | } |
| 224 | } |
| 225 | |
Primiano Tucci | c2025af | 2017-11-20 12:47:49 +0000 | [diff] [blame] | 226 | void UnixSocket::ReadPeerCredentials() { |
| 227 | #if BUILDFLAG(OS_LINUX) || BUILDFLAG(OS_ANDROID) |
| 228 | struct ucred user_cred; |
| 229 | socklen_t len = sizeof(user_cred); |
| 230 | int res = getsockopt(*fd_, SOL_SOCKET, SO_PEERCRED, &user_cred, &len); |
| 231 | PERFETTO_CHECK(res == 0); |
| 232 | peer_uid_ = user_cred.uid; |
| 233 | #else |
| 234 | struct xucred user_cred; |
| 235 | socklen_t len = sizeof(user_cred); |
| 236 | int res = getsockopt(*fd_, 0, LOCAL_PEERCRED, &user_cred, &len); |
| 237 | PERFETTO_CHECK(res == 0 && user_cred.cr_version == XUCRED_VERSION); |
| 238 | peer_uid_ = user_cred.cr_uid; |
| 239 | #endif |
| 240 | } |
| 241 | |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 242 | void UnixSocket::OnEvent() { |
| 243 | if (state_ == State::kDisconnected) |
| 244 | return; // Some spurious event, typically queued just before Shutdown(). |
| 245 | |
| 246 | if (state_ == State::kConnected) |
| 247 | return event_listener_->OnDataAvailable(this); |
| 248 | |
| 249 | if (state_ == State::kConnecting) { |
| 250 | PERFETTO_DCHECK(fd_); |
| 251 | int sock_err = EINVAL; |
| 252 | socklen_t err_len = sizeof(sock_err); |
| 253 | int res = getsockopt(*fd_, SOL_SOCKET, SO_ERROR, &sock_err, &err_len); |
| 254 | if (res == 0 && sock_err == EINPROGRESS) |
| 255 | return; // Not connected yet, just a spurious FD watch wakeup. |
| 256 | if (res == 0 && sock_err == 0) { |
Primiano Tucci | c2025af | 2017-11-20 12:47:49 +0000 | [diff] [blame] | 257 | ReadPeerCredentials(); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 258 | state_ = State::kConnected; |
| 259 | return event_listener_->OnConnect(this, true /* connected */); |
| 260 | } |
| 261 | last_error_ = sock_err; |
| 262 | return event_listener_->OnConnect(this, false /* connected */); |
| 263 | } |
| 264 | |
| 265 | // New incoming connection. |
| 266 | if (state_ == State::kListening) { |
| 267 | // There could be more than one incoming connection behind each FD watch |
| 268 | // notification. Drain'em all. |
| 269 | for (;;) { |
| 270 | sockaddr_un cli_addr = {}; |
| 271 | socklen_t size = sizeof(cli_addr); |
| 272 | base::ScopedFile new_fd(PERFETTO_EINTR( |
| 273 | accept(*fd_, reinterpret_cast<sockaddr*>(&cli_addr), &size))); |
| 274 | if (!new_fd) |
| 275 | return; |
| 276 | std::unique_ptr<UnixSocket> new_sock( |
| 277 | new UnixSocket(event_listener_, task_runner_, std::move(new_fd))); |
| 278 | event_listener_->OnNewIncomingConnection(this, std::move(new_sock)); |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | bool UnixSocket::Send(const std::string& msg) { |
| 284 | return Send(msg.c_str(), msg.size() + 1); |
| 285 | } |
| 286 | |
| 287 | bool UnixSocket::Send(const void* msg, size_t len, int send_fd) { |
| 288 | if (state_ != State::kConnected) { |
Primiano Tucci | ed0ce25 | 2017-11-09 19:35:10 +0000 | [diff] [blame] | 289 | errno = last_error_ = ENOTCONN; |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 290 | return false; |
| 291 | } |
| 292 | |
| 293 | msghdr msg_hdr = {}; |
| 294 | iovec iov = {const_cast<void*>(msg), len}; |
| 295 | msg_hdr.msg_iov = &iov; |
| 296 | msg_hdr.msg_iovlen = 1; |
| 297 | alignas(cmsghdr) char control_buf[256]; |
| 298 | |
| 299 | if (send_fd > -1) { |
| 300 | const CBufLenType control_buf_len = |
| 301 | static_cast<CBufLenType>(CMSG_SPACE(sizeof(int))); |
| 302 | PERFETTO_CHECK(control_buf_len <= sizeof(control_buf)); |
| 303 | memset(control_buf, 0, sizeof(control_buf)); |
| 304 | msg_hdr.msg_control = control_buf; |
| 305 | msg_hdr.msg_controllen = control_buf_len; |
| 306 | struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg_hdr); |
| 307 | cmsg->cmsg_level = SOL_SOCKET; |
| 308 | cmsg->cmsg_type = SCM_RIGHTS; |
| 309 | cmsg->cmsg_len = CMSG_LEN(sizeof(int)); |
| 310 | memcpy(CMSG_DATA(cmsg), &send_fd, sizeof(int)); |
| 311 | msg_hdr.msg_controllen = cmsg->cmsg_len; |
| 312 | } |
| 313 | |
| 314 | const ssize_t sz = PERFETTO_EINTR(sendmsg(*fd_, &msg_hdr, kNoSigPipe)); |
| 315 | if (sz >= 0) { |
| 316 | // There should be no way a non-blocking socket returns < |len|. |
| 317 | // If the queueing fails, sendmsg() must return -1 + errno = EWOULDBLOCK. |
| 318 | PERFETTO_CHECK(static_cast<size_t>(sz) == len); |
| 319 | last_error_ = 0; |
| 320 | return true; |
| 321 | } |
| 322 | |
| 323 | if (errno == EAGAIN || errno == EWOULDBLOCK) { |
| 324 | // A genuine out-of-buffer. The client should retry or give up. |
| 325 | // Man pages specify that EAGAIN and EWOULDBLOCK have the same semantic here |
| 326 | // and clients should check for both. |
| 327 | last_error_ = EAGAIN; |
| 328 | return false; |
| 329 | } |
| 330 | |
| 331 | // Either the the other endpoint disconnect (ECONNRESET) or some other error |
| 332 | // happened. |
| 333 | last_error_ = errno; |
| 334 | PERFETTO_DPLOG("sendmsg() failed"); |
| 335 | Shutdown(); |
| 336 | return false; |
| 337 | } |
| 338 | |
| 339 | void UnixSocket::Shutdown() { |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 340 | base::WeakPtr<UnixSocket> weak_ptr = weak_ptr_factory_.GetWeakPtr(); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 341 | if (state_ == State::kConnected) { |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 342 | task_runner_->PostTask([weak_ptr]() { |
| 343 | if (weak_ptr) |
| 344 | weak_ptr->event_listener_->OnDisconnect(weak_ptr.get()); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 345 | }); |
| 346 | } else if (state_ == State::kConnecting) { |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 347 | task_runner_->PostTask([weak_ptr]() { |
| 348 | if (weak_ptr) |
| 349 | weak_ptr->event_listener_->OnConnect(weak_ptr.get(), false); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 350 | }); |
| 351 | } |
| 352 | if (fd_) { |
| 353 | shutdown(*fd_, SHUT_RDWR); |
| 354 | task_runner_->RemoveFileDescriptorWatch(*fd_); |
| 355 | fd_.reset(); |
| 356 | } |
| 357 | state_ = State::kDisconnected; |
| 358 | } |
| 359 | |
| 360 | size_t UnixSocket::Receive(void* msg, size_t len, base::ScopedFile* recv_fd) { |
| 361 | if (state_ != State::kConnected) { |
| 362 | last_error_ = ENOTCONN; |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | msghdr msg_hdr = {}; |
| 367 | iovec iov = {msg, len}; |
| 368 | msg_hdr.msg_iov = &iov; |
| 369 | msg_hdr.msg_iovlen = 1; |
| 370 | alignas(cmsghdr) char control_buf[256]; |
| 371 | |
| 372 | if (recv_fd) { |
| 373 | msg_hdr.msg_control = control_buf; |
| 374 | msg_hdr.msg_controllen = static_cast<CBufLenType>(CMSG_SPACE(sizeof(int))); |
| 375 | PERFETTO_CHECK(msg_hdr.msg_controllen <= sizeof(control_buf)); |
| 376 | } |
| 377 | const ssize_t sz = PERFETTO_EINTR(recvmsg(*fd_, &msg_hdr, kNoSigPipe)); |
| 378 | if (sz < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) { |
| 379 | last_error_ = EAGAIN; |
| 380 | return 0; |
| 381 | } |
Primiano Tucci | 60af59d | 2017-11-28 12:53:55 +0000 | [diff] [blame] | 382 | if (sz <= 0) { |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 383 | last_error_ = errno; |
| 384 | Shutdown(); |
| 385 | return 0; |
| 386 | } |
| 387 | PERFETTO_CHECK(static_cast<size_t>(sz) <= len); |
| 388 | |
| 389 | int* fds = nullptr; |
| 390 | uint32_t fds_len = 0; |
| 391 | |
| 392 | if (msg_hdr.msg_controllen > 0) { |
| 393 | for (cmsghdr* cmsg = CMSG_FIRSTHDR(&msg_hdr); cmsg; |
| 394 | cmsg = CMSG_NXTHDR(&msg_hdr, cmsg)) { |
| 395 | const size_t payload_len = cmsg->cmsg_len - CMSG_LEN(0); |
| 396 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { |
| 397 | PERFETTO_DCHECK(payload_len % sizeof(int) == 0u); |
| 398 | PERFETTO_DCHECK(fds == nullptr); |
| 399 | fds = reinterpret_cast<int*>(CMSG_DATA(cmsg)); |
| 400 | fds_len = static_cast<uint32_t>(payload_len / sizeof(int)); |
| 401 | } |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | if (msg_hdr.msg_flags & MSG_TRUNC || msg_hdr.msg_flags & MSG_CTRUNC) { |
| 406 | for (size_t i = 0; fds && i < fds_len; ++i) |
| 407 | close(fds[i]); |
| 408 | last_error_ = EMSGSIZE; |
| 409 | Shutdown(); |
| 410 | return 0; |
| 411 | } |
| 412 | |
| 413 | for (size_t i = 0; fds && i < fds_len; ++i) { |
| 414 | if (recv_fd && i == 0) { |
| 415 | recv_fd->reset(fds[i]); |
| 416 | } else { |
| 417 | close(fds[i]); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | last_error_ = 0; |
| 422 | return static_cast<size_t>(sz); |
| 423 | } |
| 424 | |
| 425 | std::string UnixSocket::ReceiveString(size_t max_length) { |
| 426 | std::unique_ptr<char[]> buf(new char[max_length + 1]); |
| 427 | size_t rsize = Receive(buf.get(), max_length); |
| 428 | PERFETTO_CHECK(static_cast<size_t>(rsize) <= max_length); |
| 429 | buf[static_cast<size_t>(rsize)] = '\0'; |
| 430 | return std::string(buf.get()); |
| 431 | } |
| 432 | |
| 433 | void UnixSocket::NotifyConnectionState(bool success) { |
Primiano Tucci | 575af77 | 2017-11-08 18:14:17 +0000 | [diff] [blame] | 434 | base::WeakPtr<UnixSocket> weak_ptr = weak_ptr_factory_.GetWeakPtr(); |
| 435 | task_runner_->PostTask([weak_ptr, success]() { |
| 436 | if (weak_ptr) |
| 437 | weak_ptr->event_listener_->OnConnect(weak_ptr.get(), success); |
Primiano Tucci | e73ac93 | 2017-11-08 18:11:17 +0000 | [diff] [blame] | 438 | }); |
| 439 | } |
| 440 | |
| 441 | UnixSocket::EventListener::~EventListener() {} |
| 442 | void UnixSocket::EventListener::OnNewIncomingConnection( |
| 443 | UnixSocket*, |
| 444 | std::unique_ptr<UnixSocket>) {} |
| 445 | void UnixSocket::EventListener::OnConnect(UnixSocket*, bool) {} |
| 446 | void UnixSocket::EventListener::OnDisconnect(UnixSocket*) {} |
| 447 | void UnixSocket::EventListener::OnDataAvailable(UnixSocket*) {} |
| 448 | |
| 449 | } // namespace ipc |
| 450 | } // namespace perfetto |