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author | dmikurube@chromium.org <dmikurube@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-03-11 06:16:57 +0000 |
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committer | dmikurube@chromium.org <dmikurube@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-03-11 06:16:57 +0000 |
commit | 081ace94bb3e5f46908dda4e6a15d70334666f0d (patch) | |
tree | 9d75a72b60df319f2d0c2c8885766989f3ddd0b7 /ipc/unix_domain_socket_util.cc | |
parent | 9fe646539615b7ecadaa94d325949567b56d9830 (diff) | |
download | chromium_src-081ace94bb3e5f46908dda4e6a15d70334666f0d.zip chromium_src-081ace94bb3e5f46908dda4e6a15d70334666f0d.tar.gz chromium_src-081ace94bb3e5f46908dda4e6a15d70334666f0d.tar.bz2 |
Revert 187233
> Implement IPC::ChannelFactory, a class that accept()s on a UNIX socket.
>
> IPC::ChannelFactory listens on a UNIX domain socket and notifies its delegate
> when a client connects. The delegate is expected to craft an IPC::Channel from
> the handle it is given.
>
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=186912
>
> Review URL: https://chromiumcodereview.appspot.com/12386010
TBR=jeremya@chromium.org
Review URL: https://codereview.chromium.org/12761003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@187240 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'ipc/unix_domain_socket_util.cc')
-rw-r--r-- | ipc/unix_domain_socket_util.cc | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/ipc/unix_domain_socket_util.cc b/ipc/unix_domain_socket_util.cc deleted file mode 100644 index 7f513a3..0000000 --- a/ipc/unix_domain_socket_util.cc +++ /dev/null @@ -1,202 +0,0 @@ -// Copyright 2013 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. - -#include "ipc/unix_domain_socket_util.h" - -#include <errno.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/un.h> -#include <unistd.h> - -#include "base/file_util.h" -#include "base/files/file_path.h" -#include "base/logging.h" -#include "base/posix/eintr_wrapper.h" - -namespace IPC { - -// Verify that kMaxSocketNameLength is a decent size. -COMPILE_ASSERT(sizeof(((sockaddr_un*)0)->sun_path) >= kMaxSocketNameLength, - BAD_SUN_PATH_LENGTH); - -namespace { - -// Returns fd (>= 0) on success, -1 on failure. If successful, fills in -// |unix_addr| with the appropriate data for the socket, and sets -// |unix_addr_len| to the length of the data therein. -int MakeUnixAddrForPath(const std::string& socket_name, - struct sockaddr_un* unix_addr, - size_t* unix_addr_len) { - DCHECK(unix_addr); - DCHECK(unix_addr_len); - - if (socket_name.length() == 0) { - LOG(ERROR) << "Empty socket name provided for unix socket address."; - return -1; - } - // We reject socket_name.length() == kMaxSocketNameLength to make room for - // the NUL terminator at the end of the string. - if (socket_name.length() >= kMaxSocketNameLength) { - LOG(ERROR) << "Socket name too long: " << socket_name; - return -1; - } - - // Create socket. - int fd = socket(AF_UNIX, SOCK_STREAM, 0); - if (fd < 0) { - PLOG(ERROR) << "socket"; - return -1; - } - file_util::ScopedFD scoped_fd(&fd); - - // Make socket non-blocking - if (HANDLE_EINTR(fcntl(fd, F_SETFL, O_NONBLOCK)) < 0) { - PLOG(ERROR) << "fcntl(O_NONBLOCK)"; - return -1; - } - - // Create unix_addr structure. - memset(unix_addr, 0, sizeof(struct sockaddr_un)); - unix_addr->sun_family = AF_UNIX; - strncpy(unix_addr->sun_path, socket_name.c_str(), kMaxSocketNameLength); - *unix_addr_len = - offsetof(struct sockaddr_un, sun_path) + socket_name.length(); - return *scoped_fd.release(); -} - -} // namespace - -bool CreateServerUnixDomainSocket(const base::FilePath& socket_path, - int* server_listen_fd) { - DCHECK(server_listen_fd); - - std::string socket_name = socket_path.value(); - base::FilePath socket_dir = socket_path.DirName(); - - struct sockaddr_un unix_addr; - size_t unix_addr_len; - int fd = MakeUnixAddrForPath(socket_name, &unix_addr, &unix_addr_len); - if (fd < 0) - return false; - file_util::ScopedFD scoped_fd(&fd); - - // Make sure the path we need exists. - if (!file_util::CreateDirectory(socket_dir)) { - LOG(ERROR) << "Couldn't create directory: " << socket_dir.value(); - return false; - } - - // Delete any old FS instances. - if (unlink(socket_name.c_str()) < 0 && errno != ENOENT) { - PLOG(ERROR) << "unlink " << socket_name; - return false; - } - - // Bind the socket. - if (bind(fd, reinterpret_cast<const sockaddr*>(&unix_addr), - unix_addr_len) < 0) { - PLOG(ERROR) << "bind " << socket_path.value(); - return false; - } - - // Start listening on the socket. - if (listen(fd, SOMAXCONN) < 0) { - PLOG(ERROR) << "listen " << socket_path.value(); - unlink(socket_name.c_str()); - return false; - } - - *server_listen_fd = *scoped_fd.release(); - return true; -} - -bool CreateClientUnixDomainSocket(const base::FilePath& socket_path, - int* client_socket) { - DCHECK(client_socket); - - std::string socket_name = socket_path.value(); - base::FilePath socket_dir = socket_path.DirName(); - - struct sockaddr_un unix_addr; - size_t unix_addr_len; - int fd = MakeUnixAddrForPath(socket_name, &unix_addr, &unix_addr_len); - if (fd < 0) - return false; - file_util::ScopedFD scoped_fd(&fd); - - if (HANDLE_EINTR(connect(fd, reinterpret_cast<sockaddr*>(&unix_addr), - unix_addr_len)) < 0) { - PLOG(ERROR) << "connect " << socket_path.value(); - return false; - } - - *client_socket = *scoped_fd.release(); - return true; -} - -bool GetPeerEuid(int fd, uid_t* peer_euid) { - DCHECK(peer_euid); -#if defined(OS_MACOSX) || defined(OS_OPENBSD) || defined(OS_FREEBSD) - uid_t socket_euid; - gid_t socket_gid; - if (getpeereid(fd, &socket_euid, &socket_gid) < 0) { - PLOG(ERROR) << "getpeereid " << fd; - return false; - } - *peer_euid = socket_euid; - return true; -#else - struct ucred cred; - socklen_t cred_len = sizeof(cred); - if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cred, &cred_len) < 0) { - PLOG(ERROR) << "getsockopt " << fd; - return false; - } - if (static_cast<unsigned>(cred_len) < sizeof(cred)) { - NOTREACHED() << "Truncated ucred from SO_PEERCRED?"; - return false; - } - *peer_euid = cred.uid; - return true; -#endif -} - -bool IsPeerAuthorized(int peer_fd) { - uid_t peer_euid; - if (!GetPeerEuid(peer_fd, &peer_euid)) - return false; - if (peer_euid != geteuid()) { - DLOG(ERROR) << "Client euid is not authorised"; - return false; - } - return true; -} - -bool IsRecoverableError(int err) { - return errno == ECONNABORTED || errno == EMFILE || errno == ENFILE || - errno == ENOMEM || errno == ENOBUFS; -} - -bool ServerAcceptConnection(int server_listen_fd, int* server_socket) { - DCHECK(server_socket); - *server_socket = -1; - - int accept_fd = HANDLE_EINTR(accept(server_listen_fd, NULL, 0)); - if (accept_fd < 0) - return IsRecoverableError(errno); - file_util::ScopedFD scoped_fd(&accept_fd); - if (HANDLE_EINTR(fcntl(accept_fd, F_SETFL, O_NONBLOCK)) < 0) { - PLOG(ERROR) << "fcntl(O_NONBLOCK) " << accept_fd; - // It's safe to keep listening on |server_listen_fd| even if the attempt to - // set O_NONBLOCK failed on the client fd. - return true; - } - - *server_socket = *scoped_fd.release(); - return true; -} - -} // namespace IPC |