support Signed-By in Release files as a sort of HPKP

[apt.git] / apt-pkg / depcache.h

diff --git a/apt-pkg/depcache.h b/apt-pkg/depcache.h
index 94c1088f2ad12620269c630eee5749867414c9cf..03a2cb0a8230d6afdf8d42e212dddebfe96bf46b 100644 (file)
--- a/apt-pkg/depcache.h
+++ b/apt-pkg/depcache.h
@@ -163,7 +163,7 @@ class pkgDepCache : protected pkgCache::Namespace
     */
    class ActionGroup
    {
     */
    class ActionGroup
    {

-       void *d;
+       void * const d;

        pkgDepCache &cache;
 
        bool released;
        pkgDepCache &cache;
 
        bool released;


@@ -179,7 +179,7 @@ class pkgDepCache : protected pkgCache::Namespace
        *  As long as this object exists, no automatic cleanup
        *  operations will be undertaken.
        */
        *  As long as this object exists, no automatic cleanup
        *  operations will be undertaken.
        */

-       ActionGroup(pkgDepCache &cache);
+       explicit ActionGroup(pkgDepCache &cache);

 
        /** \brief Clean up the action group before it is destroyed.
         *
 
        /** \brief Clean up the action group before it is destroyed.
         *


@@ -204,12 +204,12 @@ class pkgDepCache : protected pkgCache::Namespace
      DefaultRootSetFunc() : Configuration::MatchAgainstConfig("APT::NeverAutoRemove") {};
      virtual ~DefaultRootSetFunc() {};
 
      DefaultRootSetFunc() : Configuration::MatchAgainstConfig("APT::NeverAutoRemove") {};
      virtual ~DefaultRootSetFunc() {};
 

-     bool InRootSet(const pkgCache::PkgIterator &pkg) { return pkg.end() == false && Match(pkg.Name()); };
+     bool InRootSet(const pkgCache::PkgIterator &pkg) APT_OVERRIDE { return pkg.end() == false && Match(pkg.Name()); };

    };
 
    struct StateCache
    {
    };
 
    struct StateCache
    {

-      // Epoch stripped text versions of the two version fields
+      // text versions of the two version fields

       const char *CandVersion;
       const char *CurVersion;
 
       const char *CandVersion;
       const char *CurVersion;
 


@@ -240,7 +240,7 @@ class pkgDepCache : protected pkgCache::Namespace
       unsigned char DepState;          // DepState Flags
 
       // Update of candidate version
       unsigned char DepState;          // DepState Flags
 
       // Update of candidate version

-      const char *StripEpoch(const char *Ver) APT_PURE;
+      APT_DEPRECATED_MSG("Use the method of the same name in contrib/strutl.h instead if you must") const char *StripEpoch(const char *Ver) APT_PURE;

       void Update(PkgIterator Pkg,pkgCache &Cache);
       
       // Various test members for the current status of the package
       void Update(PkgIterator Pkg,pkgCache &Cache);
       
       // Various test members for the current status of the package


@@ -250,7 +250,7 @@ class pkgDepCache : protected pkgCache::Namespace
       inline bool Keep() const {return Mode == ModeKeep;};
       inline bool Protect() const {return (iFlags & Protected) == Protected;};
       inline bool Upgrade() const {return Status > 0 && Mode == ModeInstall;};
       inline bool Keep() const {return Mode == ModeKeep;};
       inline bool Protect() const {return (iFlags & Protected) == Protected;};
       inline bool Upgrade() const {return Status > 0 && Mode == ModeInstall;};

-      inline bool Upgradable() const {return Status >= 1;};
+      inline bool Upgradable() const {return Status >= 1 && CandidateVer != NULL;};

       inline bool Downgrade() const {return Status < 0 && Mode == ModeInstall;};
       inline bool Held() const {return Status != 0 && Keep();};
       inline bool NowBroken() const {return (DepState & DepNowMin) != DepNowMin;};
       inline bool Downgrade() const {return Status < 0 && Mode == ModeInstall;};
       inline bool Held() const {return Status != 0 && Keep();};
       inline bool NowBroken() const {return (DepState & DepNowMin) != DepNowMin;};


@@ -267,7 +267,7 @@ class pkgDepCache : protected pkgCache::Namespace
    
    // Helper functions
    void BuildGroupOrs(VerIterator const &V);
    
    // Helper functions
    void BuildGroupOrs(VerIterator const &V);

-   void UpdateVerState(PkgIterator Pkg);
+   void UpdateVerState(PkgIterator const &Pkg);

 
    // User Policy control
    class Policy
 
    // User Policy control
    class Policy


@@ -279,8 +279,9 @@ class pkgDepCache : protected pkgCache::Namespace
       }
 
       virtual VerIterator GetCandidateVer(PkgIterator const &Pkg);
       }
 
       virtual VerIterator GetCandidateVer(PkgIterator const &Pkg);

-      virtual bool IsImportantDep(DepIterator const &Dep);
+      virtual bool IsImportantDep(DepIterator const &Dep) const;

       virtual signed short GetPriority(PkgIterator const &Pkg);
       virtual signed short GetPriority(PkgIterator const &Pkg);

+      virtual signed short GetPriority(VerIterator const &Ver, bool ConsiderFiles=true);

       virtual signed short GetPriority(PkgFileIterator const &File);
 
       virtual ~Policy() {};
       virtual signed short GetPriority(PkgFileIterator const &File);
 
       virtual ~Policy() {};


@@ -323,18 +324,18 @@ class pkgDepCache : protected pkgCache::Namespace
    Policy *LocalPolicy;
    
    // Check for a matching provides
    Policy *LocalPolicy;
    
    // Check for a matching provides

-   bool CheckDep(DepIterator Dep,int Type,PkgIterator &Res);
-   inline bool CheckDep(DepIterator Dep,int Type)
+   bool CheckDep(DepIterator const &Dep,int const Type,PkgIterator &Res);
+   inline bool CheckDep(DepIterator const &Dep,int const Type)

    {
       PkgIterator Res(*this,0);
       return CheckDep(Dep,Type,Res);
    }
    
    // Computes state information for deps and versions (w/o storing)
    {
       PkgIterator Res(*this,0);
       return CheckDep(Dep,Type,Res);
    }
    
    // Computes state information for deps and versions (w/o storing)

-   unsigned char DependencyState(DepIterator &D);
-   unsigned char VersionState(DepIterator D,unsigned char Check,
-                             unsigned char SetMin,
-                             unsigned char SetPolicy);
+   unsigned char DependencyState(DepIterator const &D);
+   unsigned char VersionState(DepIterator D,unsigned char const Check,
+                             unsigned char const SetMin,
+                             unsigned char const SetPolicy) const;

 
    // Recalculates various portions of the cache, call after changing something
    void Update(DepIterator Dep);           // Mostly internal
 
    // Recalculates various portions of the cache, call after changing something
    void Update(DepIterator Dep);           // Mostly internal


@@ -359,14 +360,16 @@ class pkgDepCache : protected pkgCache::Namespace
 
    inline pkgCache &GetCache() {return *Cache;};
    inline pkgVersioningSystem &VS() {return *Cache->VS;};
 
    inline pkgCache &GetCache() {return *Cache;};
    inline pkgVersioningSystem &VS() {return *Cache->VS;};

-   
+

    // Policy implementation
    // Policy implementation

-   inline VerIterator GetCandidateVer(PkgIterator const &Pkg) {return LocalPolicy->GetCandidateVer(Pkg);};
-   inline bool IsImportantDep(DepIterator Dep) {return LocalPolicy->IsImportantDep(Dep);};
+   APT_DEPRECATED_MSG("Confusingly named method which returns the candidate as chosen by policy (NOT as chosen via .SetCandidateVersion!). You probably want to use .GetCandidateVersion instead.") inline VerIterator GetCandidateVer(PkgIterator const &Pkg) {return /* GetCandidateVersion(Pkg); but for API compat: */ LocalPolicy->GetCandidateVer(Pkg);};
+
+   inline bool IsImportantDep(DepIterator Dep) const {return LocalPolicy->IsImportantDep(Dep);};

    inline Policy &GetPolicy() {return *LocalPolicy;};
    
    // Accessors
    inline StateCache &operator [](PkgIterator const &I) {return PkgState[I->ID];};
    inline Policy &GetPolicy() {return *LocalPolicy;};
    
    // Accessors
    inline StateCache &operator [](PkgIterator const &I) {return PkgState[I->ID];};

+   inline StateCache &operator [](PkgIterator const &I) const {return PkgState[I->ID];};

    inline unsigned char &operator [](DepIterator const &I) {return DepState[I->ID];};
 
    /** \return A function identifying packages in the root set other
    inline unsigned char &operator [](DepIterator const &I) {return DepState[I->ID];};
 
    /** \return A function identifying packages in the root set other


@@ -412,6 +415,16 @@ class pkgDepCache : protected pkgCache::Namespace
    void MarkProtected(PkgIterator const &Pkg) { PkgState[Pkg->ID].iFlags |= Protected; };
 
    void SetReInstall(PkgIterator const &Pkg,bool To);
    void MarkProtected(PkgIterator const &Pkg) { PkgState[Pkg->ID].iFlags |= Protected; };
 
    void SetReInstall(PkgIterator const &Pkg,bool To);

+
+   /** @return 'the' candidate version of a package
+    *
+    * The version returned is the version previously set explicitly via
+    * SetCandidate* methods like #SetCandidateVersion or if there wasn't one
+    * set the version as chosen via #Policy.
+    *
+    * @param Pkg is the package to return the candidate for
+    */
+   pkgCache::VerIterator GetCandidateVersion(pkgCache::PkgIterator const &Pkg);

    void SetCandidateVersion(VerIterator TargetVer);
    bool SetCandidateRelease(pkgCache::VerIterator TargetVer,
                                std::string const &TargetRel);
    void SetCandidateVersion(VerIterator TargetVer);
    bool SetCandidateRelease(pkgCache::VerIterator TargetVer,
                                std::string const &TargetRel);


@@ -471,8 +484,8 @@ class pkgDepCache : protected pkgCache::Namespace
                            unsigned long Depth = 0, bool FromUser = true);
 
    // read persistent states
                            unsigned long Depth = 0, bool FromUser = true);
 
    // read persistent states

-   bool readStateFile(OpProgress *prog);
-   bool writeStateFile(OpProgress *prog, bool InstalledOnly=true);
+   bool readStateFile(OpProgress * const prog);
+   bool writeStateFile(OpProgress * const prog, bool const InstalledOnly=true);

    
    // Size queries
    inline signed long long UsrSize() {return iUsrSize;};
    
    // Size queries
    inline signed long long UsrSize() {return iUsrSize;};


@@ -484,11 +497,11 @@ class pkgDepCache : protected pkgCache::Namespace
    inline unsigned long PolicyBrokenCount() {return iPolicyBrokenCount;};
    inline unsigned long BadCount() {return iBadCount;};
 
    inline unsigned long PolicyBrokenCount() {return iPolicyBrokenCount;};
    inline unsigned long BadCount() {return iBadCount;};
 

-   bool Init(OpProgress *Prog);
+   bool Init(OpProgress * const Prog);

    // Generate all state information
    // Generate all state information

-   void Update(OpProgress *Prog = 0);
+   void Update(OpProgress * const Prog = 0);

 
 

-   pkgDepCache(pkgCache *Cache,Policy *Plcy = 0);
+   pkgDepCache(pkgCache * const Cache,Policy * const Plcy = 0);

    virtual ~pkgDepCache();
 
    protected:
    virtual ~pkgDepCache();
 
    protected:


@@ -503,7 +516,7 @@ class pkgDepCache : protected pkgCache::Namespace
         bool const rPurge, unsigned long const Depth, bool const FromUser);
 
    private:
         bool const rPurge, unsigned long const Depth, bool const FromUser);
 
    private:

-   void *d;
+   void * const d;

 
    APT_HIDDEN bool IsModeChangeOk(ModeList const mode, PkgIterator const &Pkg,
                        unsigned long const Depth, bool const FromUser);
 
    APT_HIDDEN bool IsModeChangeOk(ModeList const mode, PkgIterator const &Pkg,
                        unsigned long const Depth, bool const FromUser);