netwerk/cookie/Cookie.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_net_Cookie_h
   7 #define mozilla_net_Cookie_h
   8
   9 #include "nsICookie.h"
  10 #include "nsIMemoryReporter.h"
  11 #include "nsString.h"
  12
  13 #include "mozilla/MemoryReporting.h"
  14 #include "mozilla/BasePrincipal.h"
  15 #include "mozilla/net/NeckoChannelParams.h"
  16 #include "nsIMemoryReporter.h"
  17
  18 using mozilla::OriginAttributes;
  19
  20 namespace mozilla {
  21 namespace net {
  22
  23 /**
  24  * The Cookie class is the main cookie storage medium for use within cookie
  25  * code.
  26  */
  27
  28 /******************************************************************************
  29  * Cookie:
  30  * implementation
  31  ******************************************************************************/
  32
  33 class Cookie final : public nsICookie {
  34   MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf)
  35
  36  public:
  37   // nsISupports
  38   NS_DECL_ISUPPORTS
  39   NS_DECL_NSICOOKIE
  40
  41  private:
  42   // for internal use only. see Cookie::Create().
  43   Cookie(const CookieStruct& aCookieData,
  44          const OriginAttributes& aOriginAttributes)
  45       : mData(aCookieData), mOriginAttributes(aOriginAttributes) {}
  46
  47   static already_AddRefed<Cookie> FromCookieStruct(
  48       const CookieStruct& aCookieData,
  49       const OriginAttributes& aOriginAttributes);
  50
  51  public:
  52   // Returns false if rawSameSite has an invalid value, compared to sameSite.
  53   static bool ValidateSameSite(const CookieStruct& aCookieData);
  54
  55   // Generate a unique and monotonically increasing creation time. See comment
  56   // in Cookie.cpp.
  57   static int64_t GenerateUniqueCreationTime(int64_t aCreationTime);
  58
  59   // public helper to create an Cookie object.
  60   static already_AddRefed<Cookie> Create(
  61       const CookieStruct& aCookieData,
  62       const OriginAttributes& aOriginAttributes);
  63
  64   // Same as Cookie::Create but fixes the lastAccessed and creationDates
  65   // if they are set in the future.
  66   // Should only get called from CookiePersistentStorage::InitDBConn
  67   static already_AddRefed<Cookie> CreateValidated(
  68       const CookieStruct& aCookieData,
  69       const OriginAttributes& aOriginAttributes);
  70
  71   size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
  72
  73   // fast (inline, non-xpcom) getters
  74   inline const nsCString& Name() const { return mData.name(); }
  75   inline const nsCString& Value() const { return mData.value(); }
  76   inline const nsCString& Host() const { return mData.host(); }
  77   inline nsDependentCSubstring RawHost() const {
  78     return nsDependentCSubstring(mData.host(), IsDomain() ? 1 : 0);
  79   }
  80   inline const nsCString& Path() const { return mData.path(); }
  81   const nsCString& GetFilePath();
  82   inline int64_t Expiry() const { return mData.expiry(); }  // in seconds
  83   inline int64_t LastAccessed() const {
  84     return mData.lastAccessed();
  85   }  // in microseconds
  86   inline int64_t CreationTime() const {
  87     return mData.creationTime();
  88   }  // in microseconds
  89   inline bool IsSession() const { return mData.isSession(); }
  90   inline bool IsDomain() const { return *mData.host().get() == '.'; }
  91   inline bool IsSecure() const { return mData.isSecure(); }
  92   inline bool IsHttpOnly() const { return mData.isHttpOnly(); }
  93   inline const OriginAttributes& OriginAttributesRef() const {
  94     return mOriginAttributes;
  95   }
  96   inline int32_t SameSite() const { return mData.sameSite(); }
  97   inline int32_t RawSameSite() const { return mData.rawSameSite(); }
  98   inline bool IsDefaultSameSite() const {
  99     return SameSite() == nsICookie::SAMESITE_LAX &&
 100            RawSameSite() == nsICookie::SAMESITE_NONE;
 101   }
 102   inline uint8_t SchemeMap() const { return mData.schemeMap(); }
 103
 104   // setters
 105   inline void SetExpiry(int64_t aExpiry) { mData.expiry() = aExpiry; }
 106   inline void SetLastAccessed(int64_t aTime) { mData.lastAccessed() = aTime; }
 107   inline void SetIsSession(bool aIsSession) { mData.isSession() = aIsSession; }
 108   inline bool SetIsHttpOnly(bool aIsHttpOnly) {
 109     return mData.isHttpOnly() = aIsHttpOnly;
 110   }
 111   // Set the creation time manually, overriding the monotonicity checks in
 112   // Create(). Use with caution!
 113   inline void SetCreationTime(int64_t aTime) { mData.creationTime() = aTime; }
 114   inline void SetSchemeMap(uint8_t aSchemeMap) {
 115     mData.schemeMap() = aSchemeMap;
 116   }
 117   inline void SetHost(const nsACString& aHost) { mData.host() = aHost; }
 118
 119   bool IsStale() const;
 120
 121   const CookieStruct& ToIPC() const { return mData; }
 122
 123   already_AddRefed<Cookie> Clone() const;
 124
 125  protected:
 126   virtual ~Cookie() = default;
 127
 128  private:
 129   // member variables
 130   //
 131   // Please update SizeOfIncludingThis if this strategy changes.
 132   CookieStruct mData;
 133   OriginAttributes mOriginAttributes;
 134   nsCString mFilePathCache;
 135 };
 136
 137 // Comparator class for sorting cookies before sending to a server.
 138 class CompareCookiesForSending {
 139  public:
 140   bool Equals(const Cookie* aCookie1, const Cookie* aCookie2) const {
 141     return aCookie1->CreationTime() == aCookie2->CreationTime() &&
 142            aCookie2->Path().Length() == aCookie1->Path().Length();
 143   }
 144
 145   bool LessThan(const Cookie* aCookie1, const Cookie* aCookie2) const {
 146     // compare by cookie path length in accordance with RFC2109
 147     int32_t result = aCookie2->Path().Length() - aCookie1->Path().Length();
 148     if (result != 0) return result < 0;
 149
 150     // when path lengths match, older cookies should be listed first.  this is
 151     // required for backwards compatibility since some websites erroneously
 152     // depend on receiving cookies in the order in which they were sent to the
 153     // browser!  see bug 236772.
 154     return aCookie1->CreationTime() < aCookie2->CreationTime();
 155   }
 156 };
 157
 158 }  // namespace net
 159 }  // namespace mozilla
 160
 161 #endif  // mozilla_net_Cookie_h