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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "net/socket/unix_domain_server_socket_posix.h"
      6 
      7 #include <vector>
      8 
      9 #include "base/bind.h"
     10 #include "base/files/file_path.h"
     11 #include "base/files/scoped_temp_dir.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "base/run_loop.h"
     14 #include "base/stl_util.h"
     15 #include "net/base/io_buffer.h"
     16 #include "net/base/net_errors.h"
     17 #include "net/base/test_completion_callback.h"
     18 #include "net/socket/unix_domain_client_socket_posix.h"
     19 #include "testing/gtest/include/gtest/gtest.h"
     20 
     21 namespace net {
     22 namespace {
     23 
     24 const char kSocketFilename[] = "socket_for_testing";
     25 const char kInvalidSocketPath[] = "/invalid/path";
     26 
     27 bool UserCanConnectCallback(bool allow_user,
     28     const UnixDomainServerSocket::Credentials& credentials) {
     29   // Here peers are running in same process.
     30 #if defined(OS_LINUX) || defined(OS_ANDROID)
     31   EXPECT_EQ(getpid(), credentials.process_id);
     32 #endif
     33   EXPECT_EQ(getuid(), credentials.user_id);
     34   EXPECT_EQ(getgid(), credentials.group_id);
     35   return allow_user;
     36 }
     37 
     38 UnixDomainServerSocket::AuthCallback CreateAuthCallback(bool allow_user) {
     39   return base::Bind(&UserCanConnectCallback, allow_user);
     40 }
     41 
     42 class UnixDomainServerSocketTest : public testing::Test {
     43  protected:
     44   UnixDomainServerSocketTest() {
     45     EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
     46     socket_path_ = temp_dir_.path().Append(kSocketFilename).value();
     47   }
     48 
     49   base::ScopedTempDir temp_dir_;
     50   std::string socket_path_;
     51 };
     52 
     53 TEST_F(UnixDomainServerSocketTest, ListenWithInvalidPath) {
     54   const bool kUseAbstractNamespace = false;
     55   UnixDomainServerSocket server_socket(CreateAuthCallback(true),
     56                                        kUseAbstractNamespace);
     57   EXPECT_EQ(ERR_FILE_NOT_FOUND,
     58             server_socket.ListenWithAddressAndPort(kInvalidSocketPath, 0, 1));
     59 }
     60 
     61 TEST_F(UnixDomainServerSocketTest, ListenWithInvalidPathWithAbstractNamespace) {
     62   const bool kUseAbstractNamespace = true;
     63   UnixDomainServerSocket server_socket(CreateAuthCallback(true),
     64                                        kUseAbstractNamespace);
     65 #if defined(OS_ANDROID) || defined(OS_LINUX)
     66   EXPECT_EQ(OK,
     67             server_socket.ListenWithAddressAndPort(kInvalidSocketPath, 0, 1));
     68 #else
     69   EXPECT_EQ(ERR_ADDRESS_INVALID,
     70             server_socket.ListenWithAddressAndPort(kInvalidSocketPath, 0, 1));
     71 #endif
     72 }
     73 
     74 TEST_F(UnixDomainServerSocketTest, ListenAgainAfterFailureWithInvalidPath) {
     75   const bool kUseAbstractNamespace = false;
     76   UnixDomainServerSocket server_socket(CreateAuthCallback(true),
     77                                        kUseAbstractNamespace);
     78   EXPECT_EQ(ERR_FILE_NOT_FOUND,
     79             server_socket.ListenWithAddressAndPort(kInvalidSocketPath, 0, 1));
     80   EXPECT_EQ(OK, server_socket.ListenWithAddressAndPort(socket_path_, 0, 1));
     81 }
     82 
     83 TEST_F(UnixDomainServerSocketTest, AcceptWithForbiddenUser) {
     84   const bool kUseAbstractNamespace = false;
     85 
     86   UnixDomainServerSocket server_socket(CreateAuthCallback(false),
     87                                        kUseAbstractNamespace);
     88   EXPECT_EQ(OK, server_socket.ListenWithAddressAndPort(socket_path_, 0, 1));
     89 
     90   scoped_ptr<StreamSocket> accepted_socket;
     91   TestCompletionCallback accept_callback;
     92   EXPECT_EQ(ERR_IO_PENDING,
     93             server_socket.Accept(&accepted_socket, accept_callback.callback()));
     94   EXPECT_FALSE(accepted_socket);
     95 
     96   UnixDomainClientSocket client_socket(socket_path_, kUseAbstractNamespace);
     97   EXPECT_FALSE(client_socket.IsConnected());
     98 
     99   // Connect() will return OK before the server rejects the connection.
    100   TestCompletionCallback connect_callback;
    101   int rv = connect_callback.GetResult(
    102       client_socket.Connect(connect_callback.callback()));
    103   ASSERT_EQ(OK, rv);
    104 
    105   // Try to read from the socket.
    106   const int read_buffer_size = 10;
    107   scoped_refptr<IOBuffer> read_buffer(new IOBuffer(read_buffer_size));
    108   TestCompletionCallback read_callback;
    109   rv = read_callback.GetResult(client_socket.Read(
    110       read_buffer.get(), read_buffer_size, read_callback.callback()));
    111 
    112   // The server should have disconnected gracefully, without sending any data.
    113   ASSERT_EQ(0, rv);
    114   EXPECT_FALSE(client_socket.IsConnected());
    115 
    116   // The server socket should not have called |accept_callback| or modified
    117   // |accepted_socket|.
    118   EXPECT_FALSE(accept_callback.have_result());
    119   EXPECT_FALSE(accepted_socket);
    120 }
    121 
    122 // Normal cases including read/write are tested by UnixDomainClientSocketTest.
    123 
    124 }  // namespace
    125 }  // namespace net
    126