gecko-dev/netwerk/cookie/nsCookie.h

179 строки
6.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsCookie_h__
#define nsCookie_h__
#include "nsICookie.h"
#include "nsICookie2.h"
#include "nsString.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/Preferences.h"
using mozilla::OriginAttributes;
/**
* The nsCookie class is the main cookie storage medium for use within cookie
* code. It implements nsICookie2, which extends nsICookie, a frozen interface
* for xpcom access of cookie objects.
*/
/******************************************************************************
* nsCookie:
* implementation
******************************************************************************/
class nsCookie : public nsICookie2
{
public:
// nsISupports
NS_DECL_ISUPPORTS
NS_DECL_NSICOOKIE
NS_DECL_NSICOOKIE2
private:
// for internal use only. see nsCookie::Create().
nsCookie(const char *aName,
const char *aValue,
const char *aHost,
const char *aPath,
const char *aEnd,
int64_t aExpiry,
int64_t aLastAccessed,
int64_t aCreationTime,
bool aIsSession,
bool aIsSecure,
bool aIsHttpOnly,
const OriginAttributes& aOriginAttributes,
int32_t aSameSite)
: mName(aName)
, mValue(aValue)
, mHost(aHost)
, mPath(aPath)
, mEnd(aEnd)
, mExpiry(aExpiry)
, mLastAccessed(aLastAccessed)
, mCreationTime(aCreationTime)
, mIsSession(aIsSession)
, mIsSecure(aIsSecure)
, mIsHttpOnly(aIsHttpOnly)
, mOriginAttributes(aOriginAttributes)
, mSameSite(aSameSite)
{
}
static int CookieStaleThreshold()
{
static bool initialized = false;
static int value = 60;
if (!initialized) {
mozilla::Preferences::AddIntVarCache(&value, "network.cookie.staleThreshold", 60);
initialized = true;
}
return value;
}
public:
// Generate a unique and monotonically increasing creation time. See comment
// in nsCookie.cpp.
static int64_t GenerateUniqueCreationTime(int64_t aCreationTime);
// public helper to create an nsCookie object. use |operator delete|
// to destroy an object created by this method.
static nsCookie * Create(const nsACString &aName,
const nsACString &aValue,
const nsACString &aHost,
const nsACString &aPath,
int64_t aExpiry,
int64_t aLastAccessed,
int64_t aCreationTime,
bool aIsSession,
bool aIsSecure,
bool aIsHttpOnly,
const OriginAttributes& aOriginAttributes,
int32_t aSameSite);
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
// fast (inline, non-xpcom) getters
inline const nsDependentCString Name() const { return nsDependentCString(mName, mValue - 1); }
inline const nsDependentCString Value() const { return nsDependentCString(mValue, mHost - 1); }
inline const nsDependentCString Host() const { return nsDependentCString(mHost, mPath - 1); }
inline const nsDependentCString RawHost() const { return nsDependentCString(IsDomain() ? mHost + 1 : mHost, mPath - 1); }
inline const nsDependentCString Path() const { return nsDependentCString(mPath, mEnd); }
inline int64_t Expiry() const { return mExpiry; } // in seconds
inline int64_t LastAccessed() const { return mLastAccessed; } // in microseconds
inline int64_t CreationTime() const { return mCreationTime; } // in microseconds
inline bool IsSession() const { return mIsSession; }
inline bool IsDomain() const { return *mHost == '.'; }
inline bool IsSecure() const { return mIsSecure; }
inline bool IsHttpOnly() const { return mIsHttpOnly; }
inline const OriginAttributes& OriginAttributesRef() const { return mOriginAttributes; }
inline int32_t SameSite() const { return mSameSite; }
// setters
inline void SetExpiry(int64_t aExpiry) { mExpiry = aExpiry; }
inline void SetLastAccessed(int64_t aTime) { mLastAccessed = aTime; }
inline void SetIsSession(bool aIsSession) { mIsSession = aIsSession; }
// Set the creation time manually, overriding the monotonicity checks in
// Create(). Use with caution!
inline void SetCreationTime(int64_t aTime) { mCreationTime = aTime; }
bool IsStale() const;
protected:
virtual ~nsCookie() {}
private:
// member variables
// we use char* ptrs to store the strings in a contiguous block,
// so we save on the overhead of using nsCStrings. However, we
// store a terminating null for each string, so we can hand them
// out as nsCStrings.
//
// Please update SizeOfIncludingThis if this strategy changes.
const char *mName;
const char *mValue;
const char *mHost;
const char *mPath;
const char *mEnd;
int64_t mExpiry;
int64_t mLastAccessed;
int64_t mCreationTime;
bool mIsSession;
bool mIsSecure;
bool mIsHttpOnly;
mozilla::OriginAttributes mOriginAttributes;
int32_t mSameSite;
};
// Comparator class for sorting cookies before sending to a server.
class CompareCookiesForSending
{
public:
bool Equals(const nsCookie* aCookie1, const nsCookie* aCookie2) const
{
return aCookie1->CreationTime() == aCookie2->CreationTime() &&
aCookie2->Path().Length() == aCookie1->Path().Length();
}
bool LessThan(const nsCookie* aCookie1, const nsCookie* aCookie2) const
{
// compare by cookie path length in accordance with RFC2109
int32_t result = aCookie2->Path().Length() - aCookie1->Path().Length();
if (result != 0)
return result < 0;
// when path lengths match, older cookies should be listed first. this is
// required for backwards compatibility since some websites erroneously
// depend on receiving cookies in the order in which they were sent to the
// browser! see bug 236772.
return aCookie1->CreationTime() < aCookie2->CreationTime();
}
};
#endif // nsCookie_h__