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// Copyright (c) 2009 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 CONTENT_BROWSER_APPCACHE_APPCACHE_ENTRY_H_
#define CONTENT_BROWSER_APPCACHE_APPCACHE_ENTRY_H_
#include <stdint.h>
#include "base/check_op.h"
#include "third_party/blink/public/mojom/appcache/appcache_info.mojom-forward.h"
namespace content {
// A cached entry is identified by a URL and is classified into one
// (or more) categories. URL is not stored here as this class is stored
// with the URL as a map key or the user of this class already knows the URL.
class AppCacheEntry {
public:
// An entry can be of more than one type so use a bitmask.
// Note: These bit values are stored on disk.
enum Type {
MASTER = 1 << 0,
MANIFEST = 1 << 1,
EXPLICIT = 1 << 2,
FOREIGN = 1 << 3,
FALLBACK = 1 << 4,
INTERCEPT = 1 << 5,
};
explicit AppCacheEntry(
int type = 0,
int64_t response_id = blink::mojom::kAppCacheNoResponseId,
int64_t response_size = 0,
int64_t padding_size = 0)
: types_(type),
response_id_(response_id),
response_size_(response_size),
padding_size_(padding_size) {
DCHECK_GE(response_size, 0);
DCHECK_GE(padding_size, 0);
// The manifest determines the origin of the cache, so it should always be a
// same-origin entry, which should have 0 padding.
DCHECK((type & MANIFEST) == 0 || padding_size_ == 0);
// Documents aren't allowed to reference cross-origin manifests, so master
// entries should always be same-origin, with 0 padding.
DCHECK((type & MASTER) == 0 || padding_size_ == 0);
}
int types() const { return types_; }
void add_types(int added_types) {
DCHECK((added_types & MANIFEST) == 0 || padding_size_ == 0);
DCHECK((added_types & MASTER) == 0 || padding_size_ == 0);
types_ |= added_types;
}
bool IsMaster() const { return (types_ & MASTER) != 0; }
bool IsManifest() const { return (types_ & MANIFEST) != 0; }
bool IsExplicit() const { return (types_ & EXPLICIT) != 0; }
bool IsForeign() const { return (types_ & FOREIGN) != 0; }
bool IsFallback() const { return (types_ & FALLBACK) != 0; }
bool IsIntercept() const { return (types_ & INTERCEPT) != 0; }
int64_t response_id() const { return response_id_; }
void set_response_id(int64_t id) { response_id_ = id; }
bool has_response_id() const {
return response_id_ != blink::mojom::kAppCacheNoResponseId;
}
// The actual size of the response data written to disk.
int64_t response_size() const { return response_size_; }
// The amount of space added to the actual size when calculating quota usage.
//
// To avoid leaking cross-origin resource sizes, the quota system pretends
// that cross-origin resources are larger than they actually are. The padding
// is only used for quota accounting, and does not consume any space on the
// user's disk.
int64_t padding_size() const { return padding_size_; }
void SetResponseAndPaddingSizes(int64_t response_size, int64_t padding_size) {
DCHECK_GE(response_size, 0);
DCHECK_GE(padding_size, 0);
DCHECK((types_ & MANIFEST) == 0 || padding_size == 0);
DCHECK((types_ & MASTER) == 0 || padding_size == 0);
response_size_ = response_size;
padding_size_ = padding_size;
}
private:
int types_;
int64_t response_id_;
int64_t response_size_;
int64_t padding_size_;
};
} // namespace content
#endif // CONTENT_BROWSER_APPCACHE_APPCACHE_ENTRY_H_
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