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// Copyright (c) 2010 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.
#ifndef NET_BASE_UPLOAD_DATA_H_
#define NET_BASE_UPLOAD_DATA_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/file_path.h"
#include "base/gtest_prod_util.h"
#include "base/ref_counted.h"
#include "googleurl/src/gurl.h"
#include "base/time.h"
namespace net {
class FileStream;
class UploadData : public base::RefCounted<UploadData> {
public:
enum Type {
TYPE_BYTES,
TYPE_FILE,
TYPE_BLOB
};
class Element {
public:
Element();
~Element();
Type type() const { return type_; }
const std::vector<char>& bytes() const { return bytes_; }
const FilePath& file_path() const { return file_path_; }
uint64 file_range_offset() const { return file_range_offset_; }
uint64 file_range_length() const { return file_range_length_; }
// If NULL time is returned, we do not do the check.
const base::Time& expected_file_modification_time() const {
return expected_file_modification_time_;
}
const GURL& blob_url() const { return blob_url_; }
void SetToBytes(const char* bytes, int bytes_len) {
type_ = TYPE_BYTES;
bytes_.assign(bytes, bytes + bytes_len);
}
void SetToFilePath(const FilePath& path) {
SetToFilePathRange(path, 0, kuint64max, base::Time());
}
// If expected_modification_time is NULL, we do not check for the file
// change. Also note that the granularity for comparison is time_t, not
// the full precision.
void SetToFilePathRange(const FilePath& path,
uint64 offset, uint64 length,
const base::Time& expected_modification_time) {
type_ = TYPE_FILE;
file_path_ = path;
file_range_offset_ = offset;
file_range_length_ = length;
expected_file_modification_time_ = expected_modification_time;
}
// TODO(jianli): UploadData should not contain any blob reference. We need
// to define another structure to represent WebKit::WebHTTPBody.
void SetToBlobUrl(const GURL& blob_url) {
type_ = TYPE_BLOB;
blob_url_ = blob_url;
}
// Returns the byte-length of the element. For files that do not exist, 0
// is returned. This is done for consistency with Mozilla.
// Once called, this function will always return the same value.
uint64 GetContentLength();
// Returns a FileStream opened for reading for this element, positioned at
// |file_range_offset_|. The caller gets ownership and is responsible
// for cleaning up the FileStream. Returns NULL if this element is not of
// type TYPE_FILE or if the file is not openable.
FileStream* NewFileStreamForReading();
private:
// Allows tests to override the result of GetContentLength.
void SetContentLength(uint64 content_length) {
override_content_length_ = true;
content_length_ = content_length;
}
Type type_;
std::vector<char> bytes_;
FilePath file_path_;
uint64 file_range_offset_;
uint64 file_range_length_;
base::Time expected_file_modification_time_;
GURL blob_url_;
bool override_content_length_;
bool content_length_computed_;
uint64 content_length_;
FileStream* file_stream_;
FRIEND_TEST_ALL_PREFIXES(UploadDataStreamTest, FileSmallerThanLength);
FRIEND_TEST_ALL_PREFIXES(HttpNetworkTransactionTest,
UploadFileSmallerThanLength);
};
UploadData();
void AppendBytes(const char* bytes, int bytes_len);
void AppendFile(const FilePath& file_path);
void AppendFileRange(const FilePath& file_path,
uint64 offset, uint64 length,
const base::Time& expected_modification_time);
void AppendBlob(const GURL& blob_url);
// Returns the total size in bytes of the data to upload.
uint64 GetContentLength();
std::vector<Element>* elements() {
return &elements_;
}
void SetElements(const std::vector<Element>& elements);
void swap_elements(std::vector<Element>* elements) {
elements_.swap(*elements);
}
// Identifies a particular upload instance, which is used by the cache to
// formulate a cache key. This value should be unique across browser
// sessions. A value of 0 is used to indicate an unspecified identifier.
void set_identifier(int64 id) { identifier_ = id; }
int64 identifier() const { return identifier_; }
private:
friend class base::RefCounted<UploadData>;
~UploadData();
std::vector<Element> elements_;
int64 identifier_;
DISALLOW_COPY_AND_ASSIGN(UploadData);
};
#if defined(UNIT_TEST)
inline bool operator==(const UploadData::Element& a,
const UploadData::Element& b) {
if (a.type() != b.type())
return false;
if (a.type() == UploadData::TYPE_BYTES)
return a.bytes() == b.bytes();
if (a.type() == UploadData::TYPE_FILE) {
return a.file_path() == b.file_path() &&
a.file_range_offset() == b.file_range_offset() &&
a.file_range_length() == b.file_range_length() &&
a.expected_file_modification_time() ==
b.expected_file_modification_time();
}
if (a.type() == UploadData::TYPE_BLOB)
return a.blob_url() == b.blob_url();
return false;
}
inline bool operator!=(const UploadData::Element& a,
const UploadData::Element& b) {
return !(a == b);
}
#endif // defined(UNIT_TEST)
} // namespace net
#endif // NET_BASE_UPLOAD_DATA_H_
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