Add external extensions json source in proper mac location.

base/file_util_unittest.cc

 // Copyright (c) 2011 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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 92 matching lines @@
   REPARSE_DATA_BUFFER data = {0};
   data.ReparseTag = 0xa0000003;
   if (!DeviceIoControl(source, FSCTL_DELETE_REPARSE_POINT, &data, 8, NULL, 0,
                        &returned, NULL)) {
     return false;
   }
   return true;
 }
 #endif
 
+#if defined(OS_POSIX)
+// Provide a simple way to change the permissions bits on |path| in tests.
+// ASSERT failures will return, but not stop the test.  Caller should wrap
+// calls to this function in ASSERT_NO_FATAL_FAILURE().
+void ChangePosixFilePermissions(const FilePath& path,
+                                mode_t mode_bits_to_set,
+                                mode_t mode_bits_to_clear) {
+  ASSERT_EQ(0u, mode_bits_to_set & mode_bits_to_clear)
+      << "Can't set and clear the same bit.";
+
+  struct stat stat_buf;
+  ASSERT_EQ(0, stat(path.value().c_str(), &stat_buf));
+
+  mode_t new_mode_bits = stat_buf.st_mode;
+  new_mode_bits |= mode_bits_to_set;
+  new_mode_bits &= ~mode_bits_to_clear;
+
+  ASSERT_EQ(0, chmod(path.value().c_str(), new_mode_bits));
+}
+#endif  // defined(OS_POSIX)
+
 const wchar_t bogus_content[] = L"I'm cannon fodder.";
 
 const file_util::FileEnumerator::FileType FILES_AND_DIRECTORIES =
     static_cast<file_util::FileEnumerator::FileType>(
         file_util::FileEnumerator::FILES |
         file_util::FileEnumerator::DIRECTORIES);
 
 // file_util winds up using autoreleased objects on the Mac, so this needs
 // to be a PlatformTest
 class FileUtilTest : public PlatformTest {
@@ skipping 1683 matching lines @@
 
   EXPECT_TRUE(file_util::IsDirectoryEmpty(empty_dir));
 
   FilePath foo(empty_dir.Append(FILE_PATH_LITERAL("foo.txt")));
   std::string bar("baz");
   ASSERT_TRUE(file_util::WriteFile(foo, bar.c_str(), bar.length()));
 
   EXPECT_FALSE(file_util::IsDirectoryEmpty(empty_dir));
 }
 
+#if defined(OS_POSIX)
+TEST_F(FileUtilTest, IsPathControlledByUser) {
+  // Testing IsPathControlledByAdmin() is hard, because there is no
+  // way a test can make a file owned by root, or change file paths
+  // at the root of the file system.  IsPathControlledByAdmin()
+  // is implemented as a call to IsPathControlledByUser, which gives
+  // us the ability to test with paths under the test's temp directory,
+  // using a user id we control.
+
+  FilePath base_dir = temp_dir_.path().AppendASCII("base_dir");
+  ASSERT_TRUE(file_util::CreateDirectory(base_dir));
+
+  FilePath sub_dir = base_dir.AppendASCII("sub_dir");
+  ASSERT_TRUE(file_util::CreateDirectory(sub_dir));
+
+  FilePath text_file = sub_dir.AppendASCII("file.txt");
+  CreateTextFile(text_file, L"This text file has some text in it.");
+
+  // Get our uid, and another uid, so that we can test both a
+  // matching and non-matching uid.
+  uid_t our_uid = getuid();
+  uid_t not_our_uid = our_uid + 1;
+
+  // Make all files and directories non-world-writable.
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(base_dir, 0u, S_IWOTH));
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(sub_dir, 0u, S_IWOTH));
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(text_file, 0u, S_IWOTH));
+
+  // We control these paths.
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, our_uid));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(base_dir, text_file, our_uid));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, our_uid));
+
+  // Another user does not control these paths.
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, not_our_uid ));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, text_file, not_our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, not_our_uid));
+
+  // Make base_dir world-writable.  No change, because the base dir should
+  // not be tested.
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(base_dir, S_IWOTH, 0u));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, our_uid));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(base_dir, text_file, our_uid));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, our_uid));
+
+  // Make sub_dir world writable.
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(sub_dir, S_IWOTH, 0u));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, text_file, our_uid));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, our_uid));
+
+  // Make text_file world writable.
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(text_file, S_IWOTH, 0u));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, text_file, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, our_uid));
+
+  // Make sub_dir non-world writable.
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(sub_dir, 0u, S_IWOTH));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, text_file, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, our_uid));
+
+  // Make base_dir non-world-writable.
+  ASSERT_NO_FATAL_FAILURE(
+      ChangePosixFilePermissions(base_dir, 0u, S_IWOTH));
+  ASSERT_TRUE(
+      file_util::IsPathControlledByUser(base_dir, sub_dir, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(base_dir, text_file, our_uid));
+  ASSERT_FALSE(
+      file_util::IsPathControlledByUser(sub_dir, text_file, our_uid));
+}
+#endif  // defined(OS_POSIX)
+
 }  // namespace