| // Copyright 2013 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 "extensions/common/file_util.h" |
| |
| #include <string> |
| |
| #include "base/file_util.h" |
| #include "base/files/file_path.h" |
| #include "net/base/escape.h" |
| #include "url/gurl.h" |
| |
| namespace extensions { |
| namespace file_util { |
| |
| base::FilePath ExtensionURLToRelativeFilePath(const GURL& url) { |
| std::string url_path = url.path(); |
| if (url_path.empty() || url_path[0] != '/') |
| return base::FilePath(); |
| |
| // Drop the leading slashes and convert %-encoded UTF8 to regular UTF8. |
| std::string file_path = net::UnescapeURLComponent(url_path, |
| net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS); |
| size_t skip = file_path.find_first_not_of("/\\"); |
| if (skip != file_path.npos) |
| file_path = file_path.substr(skip); |
| |
| base::FilePath path = base::FilePath::FromUTF8Unsafe(file_path); |
| |
| // It's still possible for someone to construct an annoying URL whose path |
| // would still wind up not being considered relative at this point. |
| // For example: chrome-extension://id/c:////foo.html |
| if (path.IsAbsolute()) |
| return base::FilePath(); |
| |
| return path; |
| } |
| |
| base::FilePath ExtensionResourceURLToFilePath(const GURL& url, |
| const base::FilePath& root) { |
| std::string host = net::UnescapeURLComponent(url.host(), |
| net::UnescapeRule::SPACES | net::UnescapeRule::URL_SPECIAL_CHARS); |
| if (host.empty()) |
| return base::FilePath(); |
| |
| base::FilePath relative_path = ExtensionURLToRelativeFilePath(url); |
| if (relative_path.empty()) |
| return base::FilePath(); |
| |
| base::FilePath path = root.AppendASCII(host).Append(relative_path); |
| if (!base::PathExists(path)) |
| return base::FilePath(); |
| path = base::MakeAbsoluteFilePath(path); |
| if (path.empty() || !root.IsParent(path)) |
| return base::FilePath(); |
| return path; |
| } |
| |
| } // namespace file_util |
| } // namespace extensions |