Beginning work on GN build

third_party/zlib/google/zip_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 <stddef.h>
+#include <stdint.h>
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "base/files/file.h"
+#include "base/files/file_enumerator.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/files/scoped_temp_dir.h"
+#include "base/path_service.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "build/build_config.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+#include "third_party/zlib/google/zip.h"
+#include "third_party/zlib/google/zip_reader.h"
+
+namespace {
+
+// Make the test a PlatformTest to setup autorelease pools properly on Mac.
+class ZipTest : public PlatformTest {
+ protected:
+  enum ValidYearType {
+    VALID_YEAR,
+    INVALID_YEAR
+  };
+
+  virtual void SetUp() {
+    PlatformTest::SetUp();
+
+    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+    test_dir_ = temp_dir_.path();
+
+    base::FilePath zip_path(test_dir_);
+    zip_contents_.insert(zip_path.AppendASCII("foo.txt"));
+    zip_path = zip_path.AppendASCII("foo");
+    zip_contents_.insert(zip_path);
+    zip_contents_.insert(zip_path.AppendASCII("bar.txt"));
+    zip_path = zip_path.AppendASCII("bar");
+    zip_contents_.insert(zip_path);
+    zip_contents_.insert(zip_path.AppendASCII("baz.txt"));
+    zip_contents_.insert(zip_path.AppendASCII("quux.txt"));
+    zip_contents_.insert(zip_path.AppendASCII(".hidden"));
+
+    // Include a subset of files in |zip_file_list_| to test ZipFiles().
+    zip_file_list_.push_back(base::FilePath(FILE_PATH_LITERAL("foo.txt")));
+    zip_file_list_.push_back(
+        base::FilePath(FILE_PATH_LITERAL("foo/bar/quux.txt")));
+    zip_file_list_.push_back(
+        base::FilePath(FILE_PATH_LITERAL("foo/bar/.hidden")));
+  }
+
+  virtual void TearDown() {
+    PlatformTest::TearDown();
+  }
+
+  bool GetTestDataDirectory(base::FilePath* path) {
+    bool success = PathService::Get(base::DIR_SOURCE_ROOT, path);
+    EXPECT_TRUE(success);
+    if (!success)
+      return false;
+    *path = path->AppendASCII("third_party");
+    *path = path->AppendASCII("zlib");
+    *path = path->AppendASCII("google");
+    *path = path->AppendASCII("test");
+    *path = path->AppendASCII("data");
+    return true;
+  }
+
+  void TestUnzipFile(const base::FilePath::StringType& filename,
+                     bool expect_hidden_files) {
+    base::FilePath test_dir;
+    ASSERT_TRUE(GetTestDataDirectory(&test_dir));
+    TestUnzipFile(test_dir.Append(filename), expect_hidden_files);
+  }
+
+  void TestUnzipFile(const base::FilePath& path, bool expect_hidden_files) {
+    ASSERT_TRUE(base::PathExists(path)) << "no file " << path.value();
+    ASSERT_TRUE(zip::Unzip(path, test_dir_));
+
+    base::FileEnumerator files(test_dir_, true,
+        base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES);
+    base::FilePath next_path = files.Next();
+    size_t count = 0;
+    while (!next_path.value().empty()) {
+      if (next_path.value().find(FILE_PATH_LITERAL(".svn")) ==
+          base::FilePath::StringType::npos) {
+        EXPECT_EQ(zip_contents_.count(next_path), 1U) <<
+            "Couldn't find " << next_path.value();
+        count++;
+      }
+      next_path = files.Next();
+    }
+
+    size_t expected_count = 0;
+    for (std::set<base::FilePath>::iterator iter = zip_contents_.begin();
+         iter != zip_contents_.end(); ++iter) {
+      if (expect_hidden_files || iter->BaseName().value()[0] != '.')
+        ++expected_count;
+    }
+
+    EXPECT_EQ(expected_count, count);
+  }
+
+  // This function does the following:
+  // 1) Creates a test.txt file with the given last modification timestamp
+  // 2) Zips test.txt and extracts it back into a different location.
+  // 3) Confirms that test.txt in the output directory has the specified
+  //    last modification timestamp if it is valid (|valid_year| is true).
+  //    If the timestamp is not supported by the zip format, the last
+  //    modification defaults to the current time.
+  void TestTimeStamp(const char* date_time, ValidYearType valid_year) {
+    SCOPED_TRACE(std::string("TestTimeStamp(") + date_time + ")");
+    base::ScopedTempDir temp_dir;
+    ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+
+    base::FilePath zip_file = temp_dir.path().AppendASCII("out.zip");
+    base::FilePath src_dir = temp_dir.path().AppendASCII("input");
+    base::FilePath out_dir = temp_dir.path().AppendASCII("output");
+
+    base::FilePath src_file = src_dir.AppendASCII("test.txt");
+    base::FilePath out_file = out_dir.AppendASCII("test.txt");
+
+    EXPECT_TRUE(base::CreateDirectory(src_dir));
+    EXPECT_TRUE(base::CreateDirectory(out_dir));
+
+    base::Time test_mtime;
+    ASSERT_TRUE(base::Time::FromString(date_time, &test_mtime));
+
+    // Adjusting the current timestamp to the resolution that the zip file
+    // supports, which is 2 seconds. Note that between this call to Time::Now()
+    // and zip::Zip() the clock can advance a bit, hence the use of EXPECT_GE.
+    base::Time::Exploded now_parts;
+    base::Time::Now().LocalExplode(&now_parts);
+    now_parts.second = now_parts.second & ~1;
+    now_parts.millisecond = 0;
+    base::Time now_time = base::Time::FromLocalExploded(now_parts);
+
+    EXPECT_EQ(1, base::WriteFile(src_file, "1", 1));
+    EXPECT_TRUE(base::TouchFile(src_file, base::Time::Now(), test_mtime));
+
+    EXPECT_TRUE(zip::Zip(src_dir, zip_file, true));
+    ASSERT_TRUE(zip::Unzip(zip_file, out_dir));
+
+    base::File::Info file_info;
+    EXPECT_TRUE(base::GetFileInfo(out_file, &file_info));
+    EXPECT_EQ(file_info.size, 1);
+
+    if (valid_year == VALID_YEAR) {
+      EXPECT_EQ(file_info.last_modified, test_mtime);
+    } else {
+      // Invalid date means the modification time will default to 'now'.
+      EXPECT_GE(file_info.last_modified, now_time);
+    }
+  }
+
+  // The path to temporary directory used to contain the test operations.
+  base::FilePath test_dir_;
+
+  base::ScopedTempDir temp_dir_;
+
+  // Hard-coded contents of a known zip file.
+  std::set<base::FilePath> zip_contents_;
+
+  // Hard-coded list of relative paths for a zip file created with ZipFiles.
+  std::vector<base::FilePath> zip_file_list_;
+};
+
+TEST_F(ZipTest, Unzip) {
+  TestUnzipFile(FILE_PATH_LITERAL("test.zip"), true);
+}
+
+TEST_F(ZipTest, UnzipUncompressed) {
+  TestUnzipFile(FILE_PATH_LITERAL("test_nocompress.zip"), true);
+}
+
+TEST_F(ZipTest, UnzipEvil) {
+  base::FilePath path;
+  ASSERT_TRUE(GetTestDataDirectory(&path));
+  path = path.AppendASCII("evil.zip");
+  // Unzip the zip file into a sub directory of test_dir_ so evil.zip
+  // won't create a persistent file outside test_dir_ in case of a
+  // failure.
+  base::FilePath output_dir = test_dir_.AppendASCII("out");
+  ASSERT_FALSE(zip::Unzip(path, output_dir));
+  base::FilePath evil_file = output_dir;
+  evil_file = evil_file.AppendASCII(
+      "../levilevilevilevilevilevilevilevilevilevilevilevil");
+  ASSERT_FALSE(base::PathExists(evil_file));
+}
+
+TEST_F(ZipTest, UnzipEvil2) {
+  base::FilePath path;
+  ASSERT_TRUE(GetTestDataDirectory(&path));
+  // The zip file contains an evil file with invalid UTF-8 in its file
+  // name.
+  path = path.AppendASCII("evil_via_invalid_utf8.zip");
+  // See the comment at UnzipEvil() for why we do this.
+  base::FilePath output_dir = test_dir_.AppendASCII("out");
+  // This should fail as it contains an evil file.
+  ASSERT_FALSE(zip::Unzip(path, output_dir));
+  base::FilePath evil_file = output_dir;
+  evil_file = evil_file.AppendASCII("../evil.txt");
+  ASSERT_FALSE(base::PathExists(evil_file));
+}
+
+TEST_F(ZipTest, Zip) {
+  base::FilePath src_dir;
+  ASSERT_TRUE(GetTestDataDirectory(&src_dir));
+  src_dir = src_dir.AppendASCII("test");
+
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath zip_file = temp_dir.path().AppendASCII("out.zip");
+
+  EXPECT_TRUE(zip::Zip(src_dir, zip_file, true));
+  TestUnzipFile(zip_file, true);
+}
+
+TEST_F(ZipTest, ZipIgnoreHidden) {
+  base::FilePath src_dir;
+  ASSERT_TRUE(GetTestDataDirectory(&src_dir));
+  src_dir = src_dir.AppendASCII("test");
+
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath zip_file = temp_dir.path().AppendASCII("out.zip");
+
+  EXPECT_TRUE(zip::Zip(src_dir, zip_file, false));
+  TestUnzipFile(zip_file, false);
+}
+
+TEST_F(ZipTest, ZipNonASCIIDir) {
+  base::FilePath src_dir;
+  ASSERT_TRUE(GetTestDataDirectory(&src_dir));
+  src_dir = src_dir.AppendASCII("test");
+
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  // Append 'Тест' (in cyrillic).
+  base::FilePath src_dir_russian =
+      temp_dir.path().Append(base::FilePath::FromUTF8Unsafe(
+          "\xD0\xA2\xD0\xB5\xD1\x81\xD1\x82"));
+  base::CopyDirectory(src_dir, src_dir_russian, true);
+  base::FilePath zip_file = temp_dir.path().AppendASCII("out_russian.zip");
+
+  EXPECT_TRUE(zip::Zip(src_dir_russian, zip_file, true));
+  TestUnzipFile(zip_file, true);
+}
+
+TEST_F(ZipTest, ZipTimeStamp) {
+  // The dates tested are arbitrary, with some constraints. The zip format can
+  // only store years from 1980 to 2107 and an even number of seconds, due to it
+  // using the ms dos date format.
+
+  // Valid arbitrary date.
+  TestTimeStamp("23 Oct 1997 23:22:20", VALID_YEAR);
+
+  // Date before 1980, zip format limitation, must default to unix epoch.
+  TestTimeStamp("29 Dec 1979 21:00:10", INVALID_YEAR);
+
+  // Despite the minizip headers telling the maximum year should be 2044, it
+  // can actually go up to 2107. Beyond that, the dos date format cannot store
+  // the year (2107-1980=127). To test that limit, the input file needs to be
+  // touched, but the code that modifies the file access and modification times
+  // relies on time_t which is defined as long, therefore being in many
+  // platforms just a 4-byte integer, like 32-bit Mac OSX or linux. As such, it
+  // suffers from the year-2038 bug. Therefore 2038 is the highest we can test
+  // in all platforms reliably.
+  TestTimeStamp("02 Jan 2038 23:59:58", VALID_YEAR);
+}
+
+#if defined(OS_POSIX)
+TEST_F(ZipTest, ZipFiles) {
+  base::FilePath src_dir;
+  ASSERT_TRUE(GetTestDataDirectory(&src_dir));
+  src_dir = src_dir.AppendASCII("test");
+
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath zip_name = temp_dir.path().AppendASCII("out.zip");
+
+  base::File zip_file(zip_name,
+                      base::File::FLAG_CREATE | base::File::FLAG_WRITE);
+  ASSERT_TRUE(zip_file.IsValid());
+  EXPECT_TRUE(zip::ZipFiles(src_dir, zip_file_list_,
+                            zip_file.GetPlatformFile()));
+  zip_file.Close();
+
+  zip::ZipReader reader;
+  EXPECT_TRUE(reader.Open(zip_name));
+  EXPECT_EQ(zip_file_list_.size(), static_cast<size_t>(reader.num_entries()));
+  for (size_t i = 0; i < zip_file_list_.size(); ++i) {
+    EXPECT_TRUE(reader.LocateAndOpenEntry(zip_file_list_[i]));
+    // Check the path in the entry just in case.
+    const zip::ZipReader::EntryInfo* entry_info = reader.current_entry_info();
+    EXPECT_EQ(entry_info->file_path(), zip_file_list_[i]);
+  }
+}
+#endif  // defined(OS_POSIX)
+
+TEST_F(ZipTest, UnzipFilesWithIncorrectSize) {
+  base::FilePath test_data_folder;
+  ASSERT_TRUE(GetTestDataDirectory(&test_data_folder));
+
+  // test_mismatch_size.zip contains files with names from 0.txt to 7.txt with
+  // sizes from 0 to 7 bytes respectively, but the metadata in the zip file says
+  // the uncompressed size is 3 bytes. The ZipReader and minizip code needs to
+  // be clever enough to get all the data out.
+  base::FilePath test_zip_file =
+      test_data_folder.AppendASCII("test_mismatch_size.zip");
+
+  base::ScopedTempDir scoped_temp_dir;
+  ASSERT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
+  const base::FilePath& temp_dir = scoped_temp_dir.path();
+
+  ASSERT_TRUE(zip::Unzip(test_zip_file, temp_dir));
+  EXPECT_TRUE(base::DirectoryExists(temp_dir.AppendASCII("d")));
+
+  for (int i = 0; i < 8; i++) {
+    SCOPED_TRACE(base::StringPrintf("Processing %d.txt", i));
+    base::FilePath file_path = temp_dir.AppendASCII(
+        base::StringPrintf("%d.txt", i));
+    int64_t file_size = -1;
+    EXPECT_TRUE(base::GetFileSize(file_path, &file_size));
+    EXPECT_EQ(static_cast<int64_t>(i), file_size);
+  }
+}
+
+}  // namespace