net/base/filename_util_unsafe.cc

   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/base/filename_util_unsafe.h"
   6
   7 #include "base/bind.h"
   8 #include "base/strings/string_util.h"
   9 #include "net/base/filename_util_internal.h"
  10
  11 namespace {
  12
  13 // Local ICU-independent implementation of filename sanitizing functions defined
  14 // in base/i18n/file_util_icu.h. Does not require ICU because on POSIX systems
  15 // all international characters are considered legal, so only control and
  16 // special characters have to be replaced.
  17 const base::FilePath::CharType illegal_characters[] =
  18     FILE_PATH_LITERAL("\"*/:<>?\\\\|\001\002\003\004\005\006\007\010\011\012")
  19     FILE_PATH_LITERAL("\013\014\015\016\017\020\021\022\023\024\025\025\027");
  20
  21 void ReplaceIllegalCharactersInPath(base::FilePath::StringType* file_name,
  22                                     char replace_char) {
  23   base::ReplaceChars(*file_name,
  24                      illegal_characters,
  25                      base::FilePath::StringType(1, replace_char),
  26                      file_name);
  27 }
  28
  29 }  // namespace
  30
  31 namespace net {
  32
  33 base::FilePath::StringType GenerateFileExtensionUnsafe(
  34     const GURL& url,
  35     const std::string& content_disposition,
  36     const std::string& referrer_charset,
  37     const std::string& suggested_name,
  38     const std::string& mime_type,
  39     const std::string& default_file_name) {
  40   base::FilePath filepath =
  41       GenerateFileNameImpl(url,
  42                            content_disposition,
  43                            referrer_charset,
  44                            suggested_name,
  45                            mime_type,
  46                            default_file_name,
  47                            base::Bind(&ReplaceIllegalCharactersInPath));
  48   return filepath.Extension();
  49 }
  50
  51 }  // namespace net