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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_FILEAPI_EXTERNAL_FILE_RESOLVER_H_
#define CHROME_BROWSER_ASH_FILEAPI_EXTERNAL_FILE_RESOLVER_H_
#include <memory>
#include <string>
#include "base/files/file.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/ash/file_manager/fileapi_util.h"
#include "net/base/net_errors.h"
#include "net/http/http_byte_range.h"
#include "storage/browser/file_system/file_system_url.h"
#include "storage/browser/file_system/isolated_context.h"
#include "url/gurl.h"
namespace net {
class HttpRequestHeaders;
}
namespace storage {
class FileStreamReader;
class FileSystemContext;
} // namespace storage
class GURL;
namespace ash {
// Resolves an externalfile URL to a redirect or a FileStreamReader.
class ExternalFileResolver {
public:
using ErrorCallback = base::OnceCallback<void(net::Error)>;
using RedirectCallback = base::OnceCallback<void(const std::string& mime_type,
const GURL& redirect_url)>;
using StreamCallback = base::OnceCallback<void(
const std::string& mime_type,
storage::IsolatedContext::ScopedFSHandle isolated_file_system_scope,
std::unique_ptr<storage::FileStreamReader> stream_reader,
int64_t size)>;
explicit ExternalFileResolver(void* profile_id);
ExternalFileResolver(const ExternalFileResolver&) = delete;
ExternalFileResolver& operator=(const ExternalFileResolver&) = delete;
virtual ~ExternalFileResolver();
// Extracts any extra information needed to open the URL from the request's
// headers. This should be called before Resolve.
void ProcessHeaders(const net::HttpRequestHeaders& headers);
// Resolves |url| to a redirect, or a FileStreamReader that contains the
// file's content.
void Resolve(const std::string& method,
const GURL& url,
ErrorCallback error_callback,
RedirectCallback redirect_callback,
StreamCallback stream_callback);
private:
void OnHelperResultObtained(
net::Error error,
scoped_refptr<storage::FileSystemContext> file_system_context,
file_manager::util::FileSystemURLAndHandle isolated_file_system,
const std::string& mime_type);
void OnFileInfoObtained(base::File::Error error,
const base::File::Info& file_info);
raw_ptr<void, DanglingUntriaged> profile_id_;
net::Error range_parse_result_;
net::HttpByteRange byte_range_;
ErrorCallback error_callback_;
RedirectCallback redirect_callback_;
StreamCallback stream_callback_;
scoped_refptr<storage::FileSystemContext> file_system_context_;
file_manager::util::FileSystemURLAndHandle isolated_file_system_;
std::string mime_type_;
base::WeakPtrFactory<ExternalFileResolver> weak_ptr_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_FILEAPI_EXTERNAL_FILE_RESOLVER_H_
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