add options to disable specific checksums for Indexes

[apt.git] / apt-pkg / policy.cc

diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index b9a9519906522f854aba74d84ac4145e8b9d8bcd..5427271b6108b5e67a808fbd458691e26dc88889 100644 (file)
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -16,7 +16,7 @@
    990         = Config file override package files
    989         = Start for preference auto-priorities
    500         = Default package files
    990         = Config file override package files
    989         = Start for preference auto-priorities
    500         = Default package files

-   100         = The status file
+   100         = The status file and ButAutomaticUpgrades sources

    0 -> 100    = NotAutomatic sources like experimental
    -inf -> 0   = Never selected   
    
    0 -> 100    = NotAutomatic sources like experimental
    -inf -> 0   = Never selected   
    


@@ -27,14 +27,12 @@
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/strutl.h>

+#include <apt-pkg/fileutl.h>

 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>

-    
+

 #include <apti18n.h>
 
 #include <apti18n.h>
 

-#include <dirent.h>
-#include <sys/stat.h>
-#include <algorithm>

 #include <iostream>
 #include <sstream>
                                                                        /*}}}*/
 #include <iostream>
 #include <sstream>
                                                                        /*}}}*/


@@ -47,6 +45,8 @@ using namespace std;
    file matches the V0 policy engine. */
 pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
 {
    file matches the V0 policy engine. */
 pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
 {

+   if (Owner == 0 || &(Owner->Head()) == 0)
+      return;

    PFPriority = new signed short[Owner->Head().PackageFileCount];
    Pins = new Pin[Owner->Head().PackageCount];
 
    PFPriority = new signed short[Owner->Head().PackageFileCount];
    Pins = new Pin[Owner->Head().PackageCount];
 


@@ -72,9 +72,10 @@ bool pkgPolicy::InitDefaults()
       PFPriority[I->ID] = 500;
       if ((I->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
         PFPriority[I->ID] = 100;
       PFPriority[I->ID] = 500;
       if ((I->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
         PFPriority[I->ID] = 100;

-      else
-        if ((I->Flags & pkgCache::Flag::NotAutomatic) == pkgCache::Flag::NotAutomatic)
-           PFPriority[I->ID] = 1;
+      else if ((I->Flags & pkgCache::Flag::ButAutomaticUpgrades) == pkgCache::Flag::ButAutomaticUpgrades)
+        PFPriority[I->ID] = 100;
+      else if ((I->Flags & pkgCache::Flag::NotAutomatic) == pkgCache::Flag::NotAutomatic)
+        PFPriority[I->ID] = 1;

    }
 
    // Apply the defaults..
    }
 
    // Apply the defaults..


@@ -108,7 +109,7 @@ bool pkgPolicy::InitDefaults()
 
    if (_config->FindB("Debug::pkgPolicy",false) == true)
       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)
 
    if (_config->FindB("Debug::pkgPolicy",false) == true)
       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)

-        cout << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << endl; 
+        std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl; 

    
    return true;   
 }
    
    return true;   
 }


@@ -117,12 +118,24 @@ bool pkgPolicy::InitDefaults()
 // ---------------------------------------------------------------------
 /* Evaluate the package pins and the default list to deteremine what the
    best package is. */
 // ---------------------------------------------------------------------
 /* Evaluate the package pins and the default list to deteremine what the
    best package is. */

-pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
+pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const &Pkg)

 {
    // Look for a package pin and evaluate it.
    signed Max = GetPriority(Pkg);
    pkgCache::VerIterator Pref = GetMatch(Pkg);
 
 {
    // Look for a package pin and evaluate it.
    signed Max = GetPriority(Pkg);
    pkgCache::VerIterator Pref = GetMatch(Pkg);
 

+   // Alternatives in case we can not find our package pin (Bug#512318).
+   signed MaxAlt = 0;
+   pkgCache::VerIterator PrefAlt;
+
+   // no package = no candidate version
+   if (Pkg.end() == true)
+      return Pref;
+
+   // packages with a pin lower than 0 have no newer candidate than the current version
+   if (Max < 0)
+      return Pkg.CurrentVer();
+

    /* Falling through to the default version.. Setting Max to zero
       effectively excludes everything <= 0 which are the non-automatic
       priorities.. The status file is given a prio of 100 which will exclude
    /* Falling through to the default version.. Setting Max to zero
       effectively excludes everything <= 0 which are the non-automatic
       priorities.. The status file is given a prio of 100 which will exclude


@@ -137,6 +150,16 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
     */
    for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
    {
     */
    for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
    {

+      /* Lets see if this version is the installed version */
+      bool instVer = (Pkg.CurrentVer() == Ver);
+      if (Ver.Pseudo() == true && instVer == false)
+      {
+        pkgCache::PkgIterator const allPkg = Ver.ParentPkg().Group().FindPkg("all");
+        if (allPkg->CurrentVer != 0 && allPkg.CurrentVer()->Hash == Ver->Hash &&
+            strcmp(allPkg.CurVersion(), Ver.VerStr()) == 0)
+           instVer = true;
+      }
+

       for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
       {
         /* If this is the status file, and the current version is not the
       for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
       {
         /* If this is the status file, and the current version is not the


@@ -145,18 +168,23 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
            out bogus entries that may be due to config-file states, or
            other. */
         if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource &&
            out bogus entries that may be due to config-file states, or
            other. */
         if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource &&

-            Pkg.CurrentVer() != Ver)
+            instVer == false)

            continue;
            continue;

-                        
+

         signed Prio = PFPriority[VF.File()->ID];
         if (Prio > Max)
         {
            Pref = Ver;
            Max = Prio;
         signed Prio = PFPriority[VF.File()->ID];
         if (Prio > Max)
         {
            Pref = Ver;
            Max = Prio;

+        }
+        if (Prio > MaxAlt)
+        {
+           PrefAlt = Ver;
+           MaxAlt = Prio;

         }       
       }      
       
         }       
       }      
       

-      if (Pkg.CurrentVer() == Ver && Max < 1000)
+      if (instVer == true && Max < 1000)

       {
         /* Elevate our current selection (or the status file itself)
            to the Pseudo-status priority. */
       {
         /* Elevate our current selection (or the status file itself)
            to the Pseudo-status priority. */


@@ -169,6 +197,12 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
            break;
       }            
    }
            break;
       }            
    }

+   // If we do not find our candidate, use the one with the highest pin.
+   // This means that if there is a version available with pin > 0; there
+   // will always be a candidate (Closes: #512318)
+   if (!Pref.IsGood() && MaxAlt > 0)
+       Pref = PrefAlt;
+

    return Pref;
 }
                                                                        /*}}}*/
    return Pref;
 }
                                                                        /*}}}*/


@@ -181,49 +215,51 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
                          string Data,signed short Priority)
 {
 void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
                          string Data,signed short Priority)
 {

-   Pin *P = 0;
-   

    if (Name.empty() == true)
    if (Name.empty() == true)

-      P = &*Defaults.insert(Defaults.end(),PkgPin());
-   else

    {
    {

-      // Get a spot to put the pin
-      pkgCache::PkgIterator Pkg = Cache->FindPkg(Name);
-      if (Pkg.end() == true)
+      Pin *P = &*Defaults.insert(Defaults.end(),PkgPin());
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;
+      return;
+   }
+
+   // Get a spot to put the pin
+   pkgCache::GrpIterator Grp = Cache->FindGrp(Name);
+   for (pkgCache::PkgIterator Pkg = Grp.FindPkg("any");
+       Pkg.end() != true; Pkg = Grp.NextPkg(Pkg))
+   {
+      Pin *P = 0;
+      if (Pkg.end() == false)
+        P = Pins + Pkg->ID;
+      else

       {
         // Check the unmatched table
       {
         // Check the unmatched table

-        for (vector<PkgPin>::iterator I = Unmatched.begin(); 
+        for (vector<PkgPin>::iterator I = Unmatched.begin();

              I != Unmatched.end() && P == 0; I++)
            if (I->Pkg == Name)
               P = &*I;
              I != Unmatched.end() && P == 0; I++)
            if (I->Pkg == Name)
               P = &*I;

-        
+

         if (P == 0)
         if (P == 0)

-           P = &*Unmatched.insert(Unmatched.end(),PkgPin());      
+           P = &*Unmatched.insert(Unmatched.end(),PkgPin());

       }
       }

-      else
-      {
-        P = Pins + Pkg->ID;
-      }      
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;

    }
    }

-   
-   // Set..
-   P->Type = Type;
-   P->Priority = Priority;
-   P->Data = Data;

 }
                                                                        /*}}}*/
 // Policy::GetMatch - Get the matching version for a package pin       /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 }
                                                                        /*}}}*/
 // Policy::GetMatch - Get the matching version for a package pin       /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator Pkg)
+pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator const &Pkg)

 {
    const Pin &PPkg = Pins[Pkg->ID];
 {
    const Pin &PPkg = Pins[Pkg->ID];

-   if (PPkg.Type != pkgVersionMatch::None)
-   {
-      pkgVersionMatch Match(PPkg.Data,PPkg.Type);
-      return Match.Find(Pkg);
-   }
-   return pkgCache::VerIterator(*Pkg.Cache());
+   if (PPkg.Type == pkgVersionMatch::None)
+      return pkgCache::VerIterator(*Pkg.Cache());
+
+   pkgVersionMatch Match(PPkg.Data,PPkg.Type);
+   return Match.Find(Pkg);

 }
                                                                        /*}}}*/
 // Policy::GetPriority - Get the priority of the package pin           /*{{{*/
 }
                                                                        /*}}}*/
 // Policy::GetPriority - Get the priority of the package pin           /*{{{*/


@@ -256,43 +292,25 @@ class PreferenceSection : public pkgTagSection
            Stop = (const char*) memchr(Stop,'\n',End-Stop);
    }
 };
            Stop = (const char*) memchr(Stop,'\n',End-Stop);
    }
 };

-
-
+                                                                       /*}}}*/
+// ReadPinDir - Load the pin files from this dir into a Policy         /*{{{*/
+// ---------------------------------------------------------------------
+/* This will load each pin file in the given dir into a Policy. If the
+   given dir is empty the dir set in Dir::Etc::PreferencesParts is used.
+   Note also that this method will issue a warning if the dir does not
+   exists but it will return true in this case! */

 bool ReadPinDir(pkgPolicy &Plcy,string Dir)
 {
    if (Dir.empty() == true)
       Dir = _config->FindDir("Dir::Etc::PreferencesParts");
 
 bool ReadPinDir(pkgPolicy &Plcy,string Dir)
 {
    if (Dir.empty() == true)
       Dir = _config->FindDir("Dir::Etc::PreferencesParts");
 

-   DIR *D = opendir(Dir.c_str());
-   if (D == 0)
-      return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
-
-   vector<string> List;
-   
-   for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D))
+   if (DirectoryExists(Dir) == false)

    {
    {

-      if (Ent->d_name[0] == '.')
-        continue;
-      
-      // Skip bad file names ala run-parts
-      const char *C = Ent->d_name;
-      for (; *C != 0; C++)
-        if (isalpha(*C) == 0 && isdigit(*C) == 0 && *C != '_' && *C != '-')
-           break;
-      if (*C != 0)
-        continue;
-      
-      // Make sure it is a file and not something else
-      string File = flCombine(Dir,Ent->d_name);
-      struct stat St;
-      if (stat(File.c_str(),&St) != 0 || S_ISREG(St.st_mode) == 0)
-        continue;
-      
-      List.push_back(File);      
-   }   
-   closedir(D);
-   
-   sort(List.begin(),List.end());
+      _error->WarningE("DirectoryExists",_("Unable to read %s"),Dir.c_str());
+      return true;
+   }
+
+   vector<string> const List = GetListOfFilesInDir(Dir, "pref", true, true);

 
    // Read the files
    for (vector<string>::const_iterator I = List.begin(); I != List.end(); I++)
 
    // Read the files
    for (vector<string>::const_iterator I = List.begin(); I != List.end(); I++)


@@ -300,7 +318,6 @@ bool ReadPinDir(pkgPolicy &Plcy,string Dir)
         return false;
    return true;
 }
         return false;
    return true;
 }

-   

                                                                        /*}}}*/
 // ReadPinFile - Load the pin file into a Policy                       /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // ReadPinFile - Load the pin file into a Policy                       /*{{{*/
 // ---------------------------------------------------------------------


@@ -313,7 +330,7 @@ bool ReadPinFile(pkgPolicy &Plcy,string File)
    if (File.empty() == true)
       File = _config->FindFile("Dir::Etc::Preferences");
 
    if (File.empty() == true)
       File = _config->FindFile("Dir::Etc::Preferences");
 

-   if (FileExists(File) == false)
+   if (RealFileExists(File) == false)

       return true;
    
    FileFd Fd(File,FileFd::ReadOnly);
       return true;
    
    FileFd Fd(File,FileFd::ReadOnly);