Move components/zip to third_party/zip

components/zip/zip_reader.cc

Index: components/zip/zip_reader.cc
diff --git a/components/zip/zip_reader.cc b/components/zip/zip_reader.cc
deleted file mode 100644
index 9cb369571770914c0dac995b6733097eb76380dd..0000000000000000000000000000000000000000
--- a/components/zip/zip_reader.cc
+++ /dev/null
@@ -1,310 +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 "components/zip/zip_reader.h"
-
-#include "base/file_util.h"
-#include "base/logging.h"
-#include "base/string_util.h"
-#include "base/utf_string_conversions.h"
-#include "components/zip/zip_internal.h"
-#include "net/base/file_stream.h"
-
-#if defined(USE_SYSTEM_MINIZIP)
-#include <minizip/unzip.h>
-#else
-#include "third_party/zlib/contrib/minizip/unzip.h"
-#if defined(OS_WIN)
-#include "third_party/zlib/contrib/minizip/iowin32.h"
-#endif  // defined(OS_WIN)
-#endif  // defined(USE_SYSTEM_MINIZIP)
-
-namespace zip {
-
-// TODO(satorux): The implementation assumes that file names in zip files
-// are encoded in UTF-8. This is true for zip files created by Zip()
-// function in zip.h, but not true for user-supplied random zip files.
-ZipReader::EntryInfo::EntryInfo(const std::string& file_name_in_zip,
-                                const unz_file_info& raw_file_info)
-    : file_path_(base::FilePath::FromUTF8Unsafe(file_name_in_zip)),
-      is_directory_(false) {
-  original_size_ = raw_file_info.uncompressed_size;
-
-  // Directory entries in zip files end with "/".
-  is_directory_ = EndsWith(file_name_in_zip, "/", false);
-
-  // Check the file name here for directory traversal issues. In the name of
-  // simplicity and security, we might reject a valid file name such as "a..b".
-  is_unsafe_ = file_name_in_zip.find("..") != std::string::npos;
-
-  // We also consider that the file name is unsafe, if it's invalid UTF-8.
-  string16 file_name_utf16;
-  if (!UTF8ToUTF16(file_name_in_zip.data(), file_name_in_zip.size(),
-                   &file_name_utf16)) {
-    is_unsafe_ = true;
-  }
-
-  // We also consider that the file name is unsafe, if it's absolute.
-  // On Windows, IsAbsolute() returns false for paths starting with "/".
-  if (file_path_.IsAbsolute() || StartsWithASCII(file_name_in_zip, "/", false))
-    is_unsafe_ = true;
-
-  // Construct the last modified time. The timezone info is not present in
-  // zip files, so we construct the time as local time.
-  base::Time::Exploded exploded_time = {};  // Zero-clear.
-  exploded_time.year = raw_file_info.tmu_date.tm_year;
-  // The month in zip file is 0-based, whereas ours is 1-based.
-  exploded_time.month = raw_file_info.tmu_date.tm_mon + 1;
-  exploded_time.day_of_month = raw_file_info.tmu_date.tm_mday;
-  exploded_time.hour = raw_file_info.tmu_date.tm_hour;
-  exploded_time.minute = raw_file_info.tmu_date.tm_min;
-  exploded_time.second = raw_file_info.tmu_date.tm_sec;
-  exploded_time.millisecond = 0;
-  if (exploded_time.HasValidValues()) {
-    last_modified_ = base::Time::FromLocalExploded(exploded_time);
-  } else {
-    // Use Unix time epoch if the time stamp data is invalid.
-    last_modified_ = base::Time::UnixEpoch();
-  }
-}
-
-ZipReader::ZipReader() {
-  Reset();
-}
-
-ZipReader::~ZipReader() {
-  Close();
-}
-
-bool ZipReader::Open(const base::FilePath& zip_file_path) {
-  DCHECK(!zip_file_);
-
-  // Use of "Unsafe" function does not look good, but there is no way to do
-  // this safely on Linux. See file_util.h for details.
-  zip_file_ = internal::OpenForUnzipping(zip_file_path.AsUTF8Unsafe());
-  if (!zip_file_) {
-    return false;
-  }
-
-  return OpenInternal();
-}
-
-bool ZipReader::OpenFromPlatformFile(base::PlatformFile zip_fd) {
-  DCHECK(!zip_file_);
-
-#if defined(OS_POSIX)
-  zip_file_ = internal::OpenFdForUnzipping(zip_fd);
-#elif defined(OS_WIN)
-  zip_file_ = internal::OpenHandleForUnzipping(zip_fd);
-#endif
-  if (!zip_file_) {
-    return false;
-  }
-
-  return OpenInternal();
-}
-
-bool ZipReader::OpenFromString(const std::string& data) {
-  zip_file_ = internal::PreprareMemoryForUnzipping(data);
-  if (!zip_file_)
-    return false;
-  return OpenInternal();
-}
-
-void ZipReader::Close() {
-  if (zip_file_) {
-    unzClose(zip_file_);
-  }
-  Reset();
-}
-
-bool ZipReader::HasMore() {
-  return !reached_end_;
-}
-
-bool ZipReader::AdvanceToNextEntry() {
-  DCHECK(zip_file_);
-
-  // Should not go further if we already reached the end.
-  if (reached_end_)
-    return false;
-
-  unz_file_pos position = {};
-  if (unzGetFilePos(zip_file_, &position) != UNZ_OK)
-    return false;
-  const int current_entry_index = position.num_of_file;
-  // If we are currently at the last entry, then the next position is the
-  // end of the zip file, so mark that we reached the end.
-  if (current_entry_index + 1 == num_entries_) {
-    reached_end_ = true;
-  } else {
-    DCHECK_LT(current_entry_index + 1, num_entries_);
-    if (unzGoToNextFile(zip_file_) != UNZ_OK) {
-      return false;
-    }
-  }
-  current_entry_info_.reset();
-  return true;
-}
-
-bool ZipReader::OpenCurrentEntryInZip() {
-  DCHECK(zip_file_);
-
-  unz_file_info raw_file_info = {};
-  char raw_file_name_in_zip[internal::kZipMaxPath] = {};
-  const int result = unzGetCurrentFileInfo(zip_file_,
-                                           &raw_file_info,
-                                           raw_file_name_in_zip,
-                                           sizeof(raw_file_name_in_zip) - 1,
-                                           NULL,  // extraField.
-                                           0,  // extraFieldBufferSize.
-                                           NULL,  // szComment.
-                                           0);  // commentBufferSize.
-  if (result != UNZ_OK)
-    return false;
-  if (raw_file_name_in_zip[0] == '\0')
-    return false;
-  current_entry_info_.reset(
-      new EntryInfo(raw_file_name_in_zip, raw_file_info));
-  return true;
-}
-
-bool ZipReader::LocateAndOpenEntry(const base::FilePath& path_in_zip) {
-  DCHECK(zip_file_);
-
-  current_entry_info_.reset();
-  reached_end_ = false;
-  const int kDefaultCaseSensivityOfOS = 0;
-  const int result = unzLocateFile(zip_file_,
-                                   path_in_zip.AsUTF8Unsafe().c_str(),
-                                   kDefaultCaseSensivityOfOS);
-  if (result != UNZ_OK)
-    return false;
-
-  // Then Open the entry.
-  return OpenCurrentEntryInZip();
-}
-
-bool ZipReader::ExtractCurrentEntryToFilePath(
-    const base::FilePath& output_file_path) {
-  DCHECK(zip_file_);
-
-  // If this is a directory, just create it and return.
-  if (current_entry_info()->is_directory())
-    return file_util::CreateDirectory(output_file_path);
-
-  const int open_result = unzOpenCurrentFile(zip_file_);
-  if (open_result != UNZ_OK)
-    return false;
-
-  // We can't rely on parent directory entries being specified in the
-  // zip, so we make sure they are created.
-  base::FilePath output_dir_path = output_file_path.DirName();
-  if (!file_util::CreateDirectory(output_dir_path))
-    return false;
-
-  net::FileStream stream(NULL);
-  const int flags = (base::PLATFORM_FILE_CREATE_ALWAYS |
-                     base::PLATFORM_FILE_WRITE);
-  if (stream.OpenSync(output_file_path, flags) != 0)
-    return false;
-
-  bool success = true;  // This becomes false when something bad happens.
-  while (true) {
-    char buf[internal::kZipBufSize];
-    const int num_bytes_read = unzReadCurrentFile(zip_file_, buf,
-                                                  internal::kZipBufSize);
-    if (num_bytes_read == 0) {
-      // Reached the end of the file.
-      break;
-    } else if (num_bytes_read < 0) {
-      // If num_bytes_read < 0, then it's a specific UNZ_* error code.
-      success = false;
-      break;
-    } else if (num_bytes_read > 0) {
-      // Some data is read. Write it to the output file.
-      if (num_bytes_read != stream.WriteSync(buf, num_bytes_read)) {
-        success = false;
-        break;
-      }
-    }
-  }
-
-  unzCloseCurrentFile(zip_file_);
-  return success;
-}
-
-bool ZipReader::ExtractCurrentEntryIntoDirectory(
-    const base::FilePath& output_directory_path) {
-  DCHECK(current_entry_info_.get());
-
-  base::FilePath output_file_path = output_directory_path.Append(
-      current_entry_info()->file_path());
-  return ExtractCurrentEntryToFilePath(output_file_path);
-}
-
-#if defined(OS_POSIX)
-bool ZipReader::ExtractCurrentEntryToFd(const int fd) {
-  DCHECK(zip_file_);
-
-  // If this is a directory, there's nothing to extract to the file descriptor,
-  // so return false.
-  if (current_entry_info()->is_directory())
-    return false;
-
-  const int open_result = unzOpenCurrentFile(zip_file_);
-  if (open_result != UNZ_OK)
-    return false;
-
-  bool success = true;  // This becomes false when something bad happens.
-  while (true) {
-    char buf[internal::kZipBufSize];
-    const int num_bytes_read = unzReadCurrentFile(zip_file_, buf,
-                                                  internal::kZipBufSize);
-    if (num_bytes_read == 0) {
-      // Reached the end of the file.
-      break;
-    } else if (num_bytes_read < 0) {
-      // If num_bytes_read < 0, then it's a specific UNZ_* error code.
-      success = false;
-      break;
-    } else if (num_bytes_read > 0) {
-      // Some data is read. Write it to the output file descriptor.
-      if (num_bytes_read !=
-          file_util::WriteFileDescriptor(fd, buf, num_bytes_read)) {
-        success = false;
-        break;
-      }
-    }
-  }
-
-  unzCloseCurrentFile(zip_file_);
-  return success;
-}
-#endif  // defined(OS_POSIX)
-
-bool ZipReader::OpenInternal() {
-  DCHECK(zip_file_);
-
-  unz_global_info zip_info = {};  // Zero-clear.
-  if (unzGetGlobalInfo(zip_file_, &zip_info) != UNZ_OK) {
-    return false;
-  }
-  num_entries_ = zip_info.number_entry;
-  if (num_entries_ < 0)
-    return false;
-
-  // We are already at the end if the zip file is empty.
-  reached_end_ = (num_entries_ == 0);
-  return true;
-}
-
-void ZipReader::Reset() {
-  zip_file_ = NULL;
-  num_entries_ = 0;
-  reached_end_ = false;
-  current_entry_info_.reset();
-}
-
-}  // namespace zip