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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/updater/util/posix_util.h"
#include <sys/stat.h>
#include <unistd.h>
#include <string>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace updater {
namespace {
std::string Read(const base::FilePath& path) {
std::string contents;
EXPECT_TRUE(base::ReadFileToString(path, &contents));
return contents;
}
int Stat(const base::FilePath& path) {
struct stat status = {};
EXPECT_EQ(lstat(path.value().c_str(), &status), 0);
return static_cast<int>(status.st_mode & 0777);
}
} // namespace
TEST(UtilTest, CopyDir) {
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
const base::FilePath from = temp_dir.GetPath().Append("from");
ASSERT_TRUE(base::CreateDirectory(from.Append("d1")));
ASSERT_TRUE(base::WriteFile(from.Append("d1").Append("f1"), "c1"));
ASSERT_TRUE(base::WriteFile(from.Append("f2"), "c2"));
ASSERT_EQ(0, symlink("./d1/f1", from.Append("l1").value().c_str()));
base::FilePath to = temp_dir.GetPath().Append("to");
ASSERT_TRUE(base::CreateDirectory(to));
CopyDir(from, to, true);
to = to.Append("from");
ASSERT_TRUE(base::PathExists(to));
EXPECT_EQ(Read(to.Append("d1").Append("f1")), "c1");
EXPECT_EQ(Read(to.Append("f2")), "c2");
EXPECT_EQ(Read(to.Append("l1")), "c1");
char link_contents[1000] = {};
ASSERT_EQ(readlink(to.Append("l1").value().c_str(), link_contents,
std::size(link_contents)),
7);
EXPECT_EQ(std::string(link_contents), "./d1/f1");
}
TEST(UtilTest, CopyDirPermissions) {
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
const base::FilePath from = temp_dir.GetPath().Append("from");
ASSERT_TRUE(base::CreateDirectory(from.Append("d1")));
ASSERT_TRUE(base::WriteFile(from.Append("d1").Append("f1"), "c1"));
ASSERT_TRUE(base::WriteFile(from.Append("f2"), "c2"));
ASSERT_TRUE(base::SetPosixFilePermissions(from.Append("f2"), 0700));
ASSERT_EQ(0, symlink("./d1/f1", from.Append("l1").value().c_str()));
{ // World-readable.
base::FilePath to = temp_dir.GetPath().Append("to_1");
ASSERT_TRUE(base::CreateDirectory(to));
CopyDir(from, to, true);
to = to.Append("from");
EXPECT_EQ(Stat(to), 0755);
EXPECT_EQ(Stat(to.Append("d1")), 0755);
EXPECT_EQ(Stat(to.Append("d1").Append("f1")), 0644);
EXPECT_EQ(Stat(to.Append("f2")), 0755);
}
{ // Not world-readable.
base::FilePath to = temp_dir.GetPath().Append("to_2");
ASSERT_TRUE(base::CreateDirectory(to));
CopyDir(from, to, false);
to = to.Append("from");
EXPECT_EQ(Stat(to), 0700);
EXPECT_EQ(Stat(to.Append("d1")), 0700);
EXPECT_EQ(Stat(to.Append("d1").Append("f1")), 0600);
EXPECT_EQ(Stat(to.Append("f2")), 0700);
}
}
} // namespace updater
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