Refactor tcp socket and unix domain socket.

net/socket/unix_domain_socket_posix.cc

Index: net/socket/unix_domain_socket_posix.cc
diff --git a/net/socket/unix_domain_socket_posix.cc b/net/socket/unix_domain_socket_posix.cc
deleted file mode 100644
index 3141f7166b22abb033b8278065ac0b4313e21c70..0000000000000000000000000000000000000000
--- a/net/socket/unix_domain_socket_posix.cc
+++ /dev/null
@@ -1,196 +0,0 @@
-// 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.
-
-#include "net/socket/unix_domain_socket_posix.h"
-
-#include <cstring>
-#include <string>
-
-#include <errno.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/un.h>
-#include <unistd.h>
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/posix/eintr_wrapper.h"
-#include "base/threading/platform_thread.h"
-#include "build/build_config.h"
-#include "net/base/net_errors.h"
-#include "net/base/net_util.h"
-#include "net/socket/socket_descriptor.h"
-
-namespace net {
-
-namespace {
-
-bool NoAuthenticationCallback(uid_t, gid_t) {
-  return true;
-}
-
-bool GetPeerIds(int socket, uid_t* user_id, gid_t* group_id) {
-#if defined(OS_LINUX) || defined(OS_ANDROID)
-  struct ucred user_cred;
-  socklen_t len = sizeof(user_cred);
-  if (getsockopt(socket, SOL_SOCKET, SO_PEERCRED, &user_cred, &len) == -1)
-    return false;
-  *user_id = user_cred.uid;
-  *group_id = user_cred.gid;
-#else
-  if (getpeereid(socket, user_id, group_id) == -1)
-    return false;
-#endif
-  return true;
-}
-
-}  // namespace
-
-// static
-UnixDomainSocket::AuthCallback UnixDomainSocket::NoAuthentication() {
-  return base::Bind(NoAuthenticationCallback);
-}
-
-// static
-scoped_ptr<UnixDomainSocket> UnixDomainSocket::CreateAndListenInternal(
-    const std::string& path,
-    const std::string& fallback_path,
-    StreamListenSocket::Delegate* del,
-    const AuthCallback& auth_callback,
-    bool use_abstract_namespace) {
-  SocketDescriptor s = CreateAndBind(path, use_abstract_namespace);
-  if (s == kInvalidSocket && !fallback_path.empty())
-    s = CreateAndBind(fallback_path, use_abstract_namespace);
-  if (s == kInvalidSocket)
-    return scoped_ptr<UnixDomainSocket>();
-  scoped_ptr<UnixDomainSocket> sock(
-      new UnixDomainSocket(s, del, auth_callback));
-  sock->Listen();
-  return sock.Pass();
-}
-
-// static
-scoped_ptr<UnixDomainSocket> UnixDomainSocket::CreateAndListen(
-    const std::string& path,
-    StreamListenSocket::Delegate* del,
-    const AuthCallback& auth_callback) {
-  return CreateAndListenInternal(path, "", del, auth_callback, false);
-}
-
-#if defined(SOCKET_ABSTRACT_NAMESPACE_SUPPORTED)
-// static
-scoped_ptr<UnixDomainSocket>
-UnixDomainSocket::CreateAndListenWithAbstractNamespace(
-    const std::string& path,
-    const std::string& fallback_path,
-    StreamListenSocket::Delegate* del,
-    const AuthCallback& auth_callback) {
-  return
-      CreateAndListenInternal(path, fallback_path, del, auth_callback, true);
-}
-#endif
-
-UnixDomainSocket::UnixDomainSocket(
-    SocketDescriptor s,
-    StreamListenSocket::Delegate* del,
-    const AuthCallback& auth_callback)
-    : StreamListenSocket(s, del),
-      auth_callback_(auth_callback) {}
-
-UnixDomainSocket::~UnixDomainSocket() {}
-
-// static
-SocketDescriptor UnixDomainSocket::CreateAndBind(const std::string& path,
-                                                 bool use_abstract_namespace) {
-  sockaddr_un addr;
-  static const size_t kPathMax = sizeof(addr.sun_path);
-  if (use_abstract_namespace + path.size() + 1 /* '\0' */ > kPathMax)
-    return kInvalidSocket;
-  const SocketDescriptor s = CreatePlatformSocket(PF_UNIX, SOCK_STREAM, 0);
-  if (s == kInvalidSocket)
-    return kInvalidSocket;
-  memset(&addr, 0, sizeof(addr));
-  addr.sun_family = AF_UNIX;
-  socklen_t addr_len;
-  if (use_abstract_namespace) {
-    // Convert the path given into abstract socket name. It must start with
-    // the '\0' character, so we are adding it. |addr_len| must specify the
-    // length of the structure exactly, as potentially the socket name may
-    // have '\0' characters embedded (although we don't support this).
-    // Note that addr.sun_path is already zero initialized.
-    memcpy(addr.sun_path + 1, path.c_str(), path.size());
-    addr_len = path.size() + offsetof(struct sockaddr_un, sun_path) + 1;
-  } else {
-    memcpy(addr.sun_path, path.c_str(), path.size());
-    addr_len = sizeof(sockaddr_un);
-  }
-  if (bind(s, reinterpret_cast<sockaddr*>(&addr), addr_len)) {
-    LOG(ERROR) << "Could not bind unix domain socket to " << path;
-    if (use_abstract_namespace)
-      LOG(ERROR) << " (with abstract namespace enabled)";
-    if (IGNORE_EINTR(close(s)) < 0)
-      LOG(ERROR) << "close() error";
-    return kInvalidSocket;
-  }
-  return s;
-}
-
-void UnixDomainSocket::Accept() {
-  SocketDescriptor conn = StreamListenSocket::AcceptSocket();
-  if (conn == kInvalidSocket)
-    return;
-  uid_t user_id;
-  gid_t group_id;
-  if (!GetPeerIds(conn, &user_id, &group_id) ||
-      !auth_callback_.Run(user_id, group_id)) {
-    if (IGNORE_EINTR(close(conn)) < 0)
-      LOG(ERROR) << "close() error";
-    return;
-  }
-  scoped_ptr<UnixDomainSocket> sock(
-      new UnixDomainSocket(conn, socket_delegate_, auth_callback_));
-  // It's up to the delegate to AddRef if it wants to keep it around.
-  sock->WatchSocket(WAITING_READ);
-  socket_delegate_->DidAccept(this, sock.PassAs<StreamListenSocket>());
-}
-
-UnixDomainSocketFactory::UnixDomainSocketFactory(
-    const std::string& path,
-    const UnixDomainSocket::AuthCallback& auth_callback)
-    : path_(path),
-      auth_callback_(auth_callback) {}
-
-UnixDomainSocketFactory::~UnixDomainSocketFactory() {}
-
-scoped_ptr<StreamListenSocket> UnixDomainSocketFactory::CreateAndListen(
-    StreamListenSocket::Delegate* delegate) const {
-  return UnixDomainSocket::CreateAndListen(
-      path_, delegate, auth_callback_).PassAs<StreamListenSocket>();
-}
-
-#if defined(SOCKET_ABSTRACT_NAMESPACE_SUPPORTED)
-
-UnixDomainSocketWithAbstractNamespaceFactory::
-UnixDomainSocketWithAbstractNamespaceFactory(
-    const std::string& path,
-    const std::string& fallback_path,
-    const UnixDomainSocket::AuthCallback& auth_callback)
-    : UnixDomainSocketFactory(path, auth_callback),
-      fallback_path_(fallback_path) {}
-
-UnixDomainSocketWithAbstractNamespaceFactory::
-~UnixDomainSocketWithAbstractNamespaceFactory() {}
-
-scoped_ptr<StreamListenSocket>
-UnixDomainSocketWithAbstractNamespaceFactory::CreateAndListen(
-    StreamListenSocket::Delegate* delegate) const {
-  return UnixDomainSocket::CreateAndListenWithAbstractNamespace(
-             path_, fallback_path_, delegate, auth_callback_)
-         .PassAs<StreamListenSocket>();
-}
-
-#endif
-
-}  // namespace net