add REAMDE.md

[apt.git] / apt-pkg / deb / deblistparser.cc

diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 1b3bfd6ae492c77deff4ea208403d3081f9e4f90..a1bcfb710432cc44facf49fd394cb231f8b4c319 100644 (file)
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -10,25 +10,40 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

+#include <config.h>
+

 #include <apt-pkg/deblistparser.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/deblistparser.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>

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

 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/strutl.h>

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

 #include <apt-pkg/crc-16.h>
 #include <apt-pkg/md5.h>
 #include <apt-pkg/crc-16.h>
 #include <apt-pkg/md5.h>

+#include <apt-pkg/mmap.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
+#include <apt-pkg/tagfile.h>

 #include <apt-pkg/macros.h>
 
 #include <apt-pkg/macros.h>
 

-#include <fnmatch.h>
+#include <stddef.h>
+#include <string.h>
+#include <algorithm>
+#include <string>
+#include <vector>

 #include <ctype.h>
                                                                        /*}}}*/
 
 #include <ctype.h>
                                                                        /*}}}*/
 

-static debListParser::WordList PrioList[] = {{"important",pkgCache::State::Important},
-                       {"required",pkgCache::State::Required},
-                       {"standard",pkgCache::State::Standard},
-                       {"optional",pkgCache::State::Optional},
-                      {"extra",pkgCache::State::Extra},
-                       {}};
+using std::string;
+
+static debListParser::WordList PrioList[] = {
+   {"required",pkgCache::State::Required},
+   {"important",pkgCache::State::Important},
+   {"standard",pkgCache::State::Standard},
+   {"optional",pkgCache::State::Optional},
+   {"extra",pkgCache::State::Extra},
+   {NULL, 0}};

 
 // ListParser::debListParser - Constructor                             /*{{{*/
 // ---------------------------------------------------------------------
 
 // ListParser::debListParser - Constructor                             /*{{{*/
 // ---------------------------------------------------------------------


@@ -67,23 +82,9 @@ string debListParser::Package() {
                                                                        /*}}}*/
 // ListParser::Architecture - Return the package arch                  /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // ListParser::Architecture - Return the package arch                  /*{{{*/
 // ---------------------------------------------------------------------

-/* This will return the Architecture of the package this section describes
-   Note that architecture "all" packages will get the architecture of the
-   Packages file parsed here. */
+/* This will return the Architecture of the package this section describes */

 string debListParser::Architecture() {
 string debListParser::Architecture() {

-   string const Result = Section.FindS("Architecture");
-   if (Result.empty() == true || Result == "all")
-   {
-      if (Arch.empty() == true)
-        /* FIXME: this is a problem for installed arch all
-           packages as we don't know from which arch this
-           package was installed - and therefore which
-           dependency this package resolves. */
-        return _config->Find("APT::Architecture");
-      else
-        return Arch;
-   }
-   return Result;
+   return Section.FindS("Architecture");

 }
                                                                        /*}}}*/
 // ListParser::ArchitectureAll                                         /*{{{*/
 }
                                                                        /*}}}*/
 // ListParser::ArchitectureAll                                         /*{{{*/


@@ -103,6 +104,41 @@ string debListParser::Version()
    return Section.FindS("Version");
 }
                                                                        /*}}}*/
    return Section.FindS("Version");
 }
                                                                        /*}}}*/

+unsigned char debListParser::ParseMultiArch(bool const showErrors)     /*{{{*/
+{
+   unsigned char MA;
+   string const MultiArch = Section.FindS("Multi-Arch");
+   if (MultiArch.empty() == true)
+      MA = pkgCache::Version::None;
+   else if (MultiArch == "same") {
+      if (ArchitectureAll() == true)
+      {
+        if (showErrors == true)
+           _error->Warning("Architecture: all package '%s' can't be Multi-Arch: same",
+                 Section.FindS("Package").c_str());
+        MA = pkgCache::Version::None;
+      }
+      else
+        MA = pkgCache::Version::Same;
+   }
+   else if (MultiArch == "foreign")
+      MA = pkgCache::Version::Foreign;
+   else if (MultiArch == "allowed")
+      MA = pkgCache::Version::Allowed;
+   else
+   {
+      if (showErrors == true)
+        _error->Warning("Unknown Multi-Arch type '%s' for package '%s'",
+              MultiArch.c_str(), Section.FindS("Package").c_str());
+      MA = pkgCache::Version::None;
+   }
+
+   if (ArchitectureAll() == true)
+      MA |= pkgCache::Version::All;
+
+   return MA;
+}
+                                                                       /*}}}*/

 // ListParser::NewVersion - Fill in the version structure              /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ListParser::NewVersion - Fill in the version structure              /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -110,31 +146,7 @@ bool debListParser::NewVersion(pkgCache::VerIterator &Ver)
 {
    // Parse the section
    Ver->Section = UniqFindTagWrite("Section");
 {
    // Parse the section
    Ver->Section = UniqFindTagWrite("Section");

-
-   // Parse multi-arch
-   if (Section.FindS("Architecture") == "all")
-      /* Arch all packages can't have a Multi-Arch field,
-         but we need a special treatment for them nonetheless */
-      Ver->MultiArch = pkgCache::Version::All;
-   else
-   {
-      string const MultiArch = Section.FindS("Multi-Arch");
-      if (MultiArch.empty() == true)
-        Ver->MultiArch = pkgCache::Version::None;
-      else if (MultiArch == "same")
-        Ver->MultiArch = pkgCache::Version::Same;
-      else if (MultiArch == "foreign")
-        Ver->MultiArch = pkgCache::Version::Foreign;
-      else if (MultiArch == "allowed")
-        Ver->MultiArch = pkgCache::Version::Allowed;
-      else
-      {
-        _error->Warning("Unknown Multi-Arch type »%s« for package »%s«",
-                       MultiArch.c_str(), Section.FindS("Package").c_str());
-        Ver->MultiArch = pkgCache::Version::None;
-      }
-   }
-
+   Ver->MultiArch = ParseMultiArch(true);

    // Archive Size
    Ver->Size = Section.FindULL("Size");
    // Unpacked Size (in K)
    // Archive Size
    Ver->Size = Section.FindULL("Size");
    // Unpacked Size (in K)


@@ -150,24 +162,6 @@ bool debListParser::NewVersion(pkgCache::VerIterator &Ver)
         Ver->Priority = pkgCache::State::Extra;
    }
 
         Ver->Priority = pkgCache::State::Extra;
    }
 

-   if (Ver->MultiArch == pkgCache::Version::All)
-   {
-      /* We maintain a "pseudo" arch=all package for architecture all versions
-        on which these versions can depend on. This pseudo package is many used
-        for downloading/installing: The other pseudo-packages will degenerate
-        to a NOP in the download/install step - this package will ensure that
-        it is downloaded only one time and installed only one time -- even if
-        the architecture bound versions coming in and out on regular basis. */
-      if (strcmp(Ver.Arch(true),"all") == 0)
-        return true;
-      else if (MultiArchEnabled == true)
-      {
-        // our pseudo packages have no size to not confuse the fetcher
-        Ver->Size = 0;
-        Ver->InstalledSize = 0;
-      }
-   }
-

    if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
       return false;
    if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false)
    if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
       return false;
    if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false)


@@ -219,9 +213,9 @@ string debListParser::DescriptionLanguage()
    if (Section.FindS("Description").empty() == false)
       return "";
 
    if (Section.FindS("Description").empty() == false)
       return "";
 

-   std::vector<string> const lang = APT::Configuration::getLanguages();
+   std::vector<string> const lang = APT::Configuration::getLanguages(true);

    for (std::vector<string>::const_iterator l = lang.begin();
    for (std::vector<string>::const_iterator l = lang.begin();

-       l != lang.end(); l++)
+       l != lang.end(); ++l)

       if (Section.FindS(string("Description-").append(*l).c_str()).empty() == false)
         return *l;
 
       if (Section.FindS(string("Description-").append(*l).c_str()).empty() == false)
         return *l;
 


@@ -236,15 +230,26 @@ string debListParser::DescriptionLanguage()
  */
 MD5SumValue debListParser::Description_md5()
 {
  */
 MD5SumValue debListParser::Description_md5()
 {

-   string value = Section.FindS("Description-md5");
-
-   if (value.empty()) 
+   string const value = Section.FindS("Description-md5");
+   if (value.empty() == true)

    {
    {

+      std::string const desc = Description() + "\n";
+      if (desc == "\n")
+        return MD5SumValue();
+

       MD5Summation md5;
       MD5Summation md5;

-      md5.Add((Description() + "\n").c_str());
+      md5.Add(desc.c_str());

       return md5.Result();
       return md5.Result();

-   } else
-      return MD5SumValue(value);
+   }
+   else if (likely(value.size() == 32))
+   {
+      if (likely(value.find_first_not_of("0123456789abcdefABCDEF") == string::npos))
+        return MD5SumValue(value);
+      _error->Error("Malformed Description-md5 line; includes invalid character '%s'", value.c_str());
+      return MD5SumValue();
+   }
+   _error->Error("Malformed Description-md5 line; doesn't have the required length (32 != %d) '%s'", (int)value.size(), value.c_str());
+   return MD5SumValue();

 }
                                                                         /*}}}*/
 // ListParser::UsePackage - Update a package structure                 /*{{{*/
 }
                                                                         /*}}}*/
 // ListParser::UsePackage - Update a package structure                 /*{{{*/


@@ -257,21 +262,26 @@ bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg,
    if (Pkg->Section == 0)
       Pkg->Section = UniqFindTagWrite("Section");
 
    if (Pkg->Section == 0)
       Pkg->Section = UniqFindTagWrite("Section");
 

-   // Packages which are not from the "native" arch doesn't get the essential flag
-   // in the default "native" mode - it is also possible to mark "all" or "none".
-   // The "installed" mode is handled by ParseStatus(), See #544481 and friends.

    string const static myArch = _config->Find("APT::Architecture");
    string const static myArch = _config->Find("APT::Architecture");

-   string const static essential = _config->Find("pkgCacheGen::Essential", "native");
-   if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) ||
-       essential == "all")
+   // Possible values are: "all", "native", "installed" and "none"
+   // The "installed" mode is handled by ParseStatus(), See #544481 and friends.
+   string const static essential = _config->Find("pkgCacheGen::Essential", "all");
+   if (essential == "all" ||
+       (essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()))

       if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
         return false;
    if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false)
       return false;
 
    if (strcmp(Pkg.Name(),"apt") == 0)
       if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
         return false;
    if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false)
       return false;
 
    if (strcmp(Pkg.Name(),"apt") == 0)

-      Pkg->Flags |= pkgCache::Flag::Important;
-   
+   {
+      if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) ||
+         essential == "all")
+        Pkg->Flags |= pkgCache::Flag::Essential | pkgCache::Flag::Important;
+      else
+        Pkg->Flags |= pkgCache::Flag::Important;
+   }
+

    if (ParseStatus(Pkg,Ver) == false)
       return false;
    return true;
    if (ParseStatus(Pkg,Ver) == false)
       return false;
    return true;


@@ -292,7 +302,7 @@ unsigned short debListParser::VersionHash()
                             "Replaces",0};
    unsigned long Result = INIT_FCS;
    char S[1024];
                             "Replaces",0};
    unsigned long Result = INIT_FCS;
    char S[1024];

-   for (const char **I = Sections; *I != 0; I++)
+   for (const char * const *I = Sections; *I != 0; ++I)

    {
       const char *Start;
       const char *End;
    {
       const char *Start;
       const char *End;


@@ -302,18 +312,18 @@ unsigned short debListParser::VersionHash()
       /* Strip out any spaces from the text, this undoes dpkgs reformatting
          of certain fields. dpkg also has the rather interesting notion of
          reformatting depends operators < -> <= */
       /* Strip out any spaces from the text, this undoes dpkgs reformatting
          of certain fields. dpkg also has the rather interesting notion of
          reformatting depends operators < -> <= */

-      char *I = S;
-      for (; Start != End; Start++)
+      char *J = S;
+      for (; Start != End; ++Start)

       {
       {

-        if (isspace(*Start) == 0)
-           *I++ = tolower_ascii(*Start);
-        if (*Start == '<' && Start[1] != '<' && Start[1] != '=')
-           *I++ = '=';
-        if (*Start == '>' && Start[1] != '>' && Start[1] != '=')
-           *I++ = '=';
+        if (isspace(*Start) != 0)
+           continue;
+        *J++ = tolower_ascii(*Start);
+
+        if ((*Start == '<' || *Start == '>') && Start[1] != *Start && Start[1] != '=')
+           *J++ = '=';

       }
 
       }
 

-      Result = AddCRC16(Result,S,I - S);
+      Result = AddCRC16(Result,S,J - S);

    }
    
    return Result;
    }
    
    return Result;


@@ -358,7 +368,7 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg,
                           {"hold",pkgCache::State::Hold},
                           {"deinstall",pkgCache::State::DeInstall},
                           {"purge",pkgCache::State::Purge},
                           {"hold",pkgCache::State::Hold},
                           {"deinstall",pkgCache::State::DeInstall},
                           {"purge",pkgCache::State::Purge},

-                          {}};
+                          {NULL, 0}};

    if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false)
       return _error->Error("Malformed 1st word in the Status line");
 
    if (GrabWord(string(Start,I-Start),WantList,Pkg->SelectedState) == false)
       return _error->Error("Malformed 1st word in the Status line");
 


@@ -374,7 +384,7 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg,
                           {"reinstreq",pkgCache::State::ReInstReq},
                           {"hold",pkgCache::State::HoldInst},
                           {"hold-reinstreq",pkgCache::State::HoldReInstReq},
                           {"reinstreq",pkgCache::State::ReInstReq},
                           {"hold",pkgCache::State::HoldInst},
                           {"hold-reinstreq",pkgCache::State::HoldReInstReq},

-                          {}};
+                          {NULL, 0}};

    if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false)
       return _error->Error("Malformed 2nd word in the Status line");
 
    if (GrabWord(string(Start,I-Start),FlagList,Pkg->InstState) == false)
       return _error->Error("Malformed 2nd word in the Status line");
 


@@ -396,7 +406,7 @@ bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg,
                             {"triggers-pending",pkgCache::State::TriggersPending},
                             {"post-inst-failed",pkgCache::State::HalfConfigured},
                             {"removal-failed",pkgCache::State::HalfInstalled},
                             {"triggers-pending",pkgCache::State::TriggersPending},
                             {"post-inst-failed",pkgCache::State::HalfConfigured},
                             {"removal-failed",pkgCache::State::HalfInstalled},

-                            {}};
+                            {NULL, 0}};

    if (GrabWord(string(Start,I-Start),StatusList,Pkg->CurrentState) == false)
       return _error->Error("Malformed 3rd word in the Status line");
 
    if (GrabWord(string(Start,I-Start),StatusList,Pkg->CurrentState) == false)
       return _error->Error("Malformed 3rd word in the Status line");
 


@@ -473,39 +483,36 @@ const char *debListParser::ConvertRelation(const char *I,unsigned int &Op)
    }
    return I;
 }
    }
    return I;
 }

-
-/*
- * CompleteArch:
- *
- * The complete architecture, consisting of <kernel>-<cpu>.
- */
-static string CompleteArch(std::string& arch) {
-    if (arch == "armel")              return "linux-arm";
-    if (arch == "armhf")              return "linux-arm";
-    if (arch == "lpia")               return "linux-i386";
-    if (arch == "powerpcspe")         return "linux-powerpc";
-    if (arch == "uclibc-linux-armel") return "linux-arm";
-    if (arch == "uclinux-armel")      return "uclinux-arm";
-
-    return (arch.find("-") != string::npos) ? arch : "linux-" + arch;
-}

                                                                        /*}}}*/
 // ListParser::ParseDepends - Parse a dependency element               /*{{{*/
 // ---------------------------------------------------------------------
 /* This parses the dependency elements out of a standard string in place,
    bit by bit. */
                                                                        /*}}}*/
 // ListParser::ParseDepends - Parse a dependency element               /*{{{*/
 // ---------------------------------------------------------------------
 /* This parses the dependency elements out of a standard string in place,
    bit by bit. */

+const char *debListParser::ParseDepends(const char *Start,const char *Stop,
+               std::string &Package,std::string &Ver,unsigned int &Op)
+   { return ParseDepends(Start, Stop, Package, Ver, Op, false, true, false); }
+const char *debListParser::ParseDepends(const char *Start,const char *Stop,
+               std::string &Package,std::string &Ver,unsigned int &Op,
+               bool const &ParseArchFlags)
+   { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, true, false); }
+const char *debListParser::ParseDepends(const char *Start,const char *Stop,
+               std::string &Package,std::string &Ver,unsigned int &Op,
+               bool const &ParseArchFlags, bool const &StripMultiArch)
+   { return ParseDepends(Start, Stop, Package, Ver, Op, ParseArchFlags, StripMultiArch, false); }

 const char *debListParser::ParseDepends(const char *Start,const char *Stop,
                                        string &Package,string &Ver,
                                        unsigned int &Op, bool const &ParseArchFlags,
 const char *debListParser::ParseDepends(const char *Start,const char *Stop,
                                        string &Package,string &Ver,
                                        unsigned int &Op, bool const &ParseArchFlags,

-                                       bool const &StripMultiArch)
+                                       bool const &StripMultiArch,
+                                       bool const &ParseRestrictionsList)

 {
    // Strip off leading space
 {
    // Strip off leading space

-   for (;Start != Stop && isspace(*Start) != 0; Start++);
+   for (;Start != Stop && isspace(*Start) != 0; ++Start);

    
    // Parse off the package name
    const char *I = Start;
    for (;I != Stop && isspace(*I) == 0 && *I != '(' && *I != ')' &&
    
    // Parse off the package name
    const char *I = Start;
    for (;I != Stop && isspace(*I) == 0 && *I != '(' && *I != ')' &&

-       *I != ',' && *I != '|'; I++);
+       *I != ',' && *I != '|' && *I != '[' && *I != ']' &&
+       *I != '<' && *I != '>'; ++I);

    
    // Malformed, no '('
    if (I != Stop && *I == ')')
    
    // Malformed, no '('
    if (I != Stop && *I == ')')


@@ -518,9 +525,13 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
    Package.assign(Start,I - Start);
 
    // We don't want to confuse library users which can't handle MultiArch
    Package.assign(Start,I - Start);
 
    // We don't want to confuse library users which can't handle MultiArch

+   string const arch = _config->Find("APT::Architecture");

    if (StripMultiArch == true) {
       size_t const found = Package.rfind(':');
    if (StripMultiArch == true) {
       size_t const found = Package.rfind(':');

-      if (found != string::npos)
+      if (found != string::npos &&
+         (strcmp(Package.c_str() + found, ":any") == 0 ||
+          strcmp(Package.c_str() + found, ":native") == 0 ||
+          strcmp(Package.c_str() + found + 1, arch.c_str()) == 0))

         Package = Package.substr(0,found);
    }
 
         Package = Package.substr(0,found);
    }
 


@@ -539,9 +550,9 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
       // Skip whitespace
       for (;I != Stop && isspace(*I) != 0; I++);
       Start = I;
       // Skip whitespace
       for (;I != Stop && isspace(*I) != 0; I++);
       Start = I;

-      for (;I != Stop && *I != ')'; I++);
-      if (I == Stop || Start == I)
-        return 0;     
+      I = (const char*) memchr(I, ')', Stop - I);
+      if (I == NULL || Start == I)
+        return 0;

       
       // Skip trailing whitespace
       const char *End = I;
       
       // Skip trailing whitespace
       const char *End = I;


@@ -561,59 +572,129 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
 
    if (ParseArchFlags == true)
    {
 
    if (ParseArchFlags == true)
    {

-      string arch = _config->Find("APT::Architecture");
-      string completeArch = CompleteArch(arch);
+      APT::CacheFilter::PackageArchitectureMatchesSpecification matchesArch(arch, false);

 
       // Parse an architecture
       if (I != Stop && *I == '[')
       {
 
       // Parse an architecture
       if (I != Stop && *I == '[')
       {

+        ++I;

         // malformed
         // malformed

-         I++;
-         if (I == Stop)
-           return 0; 
-        
-         const char *End = I;
-         bool Found = false;
-        bool NegArch = false;
-         while (I != Stop) 
+        if (unlikely(I == Stop))
+           return 0;
+
+        const char *End = I;
+        bool Found = false;
+        bool NegArch = false;
+        while (I != Stop)

         {
         {

-            // look for whitespace or ending ']'
-           while (End != Stop && !isspace(*End) && *End != ']') 
-              End++;
-        
-           if (End == Stop) 
+           // look for whitespace or ending ']'
+           for (;End != Stop && !isspace(*End) && *End != ']'; ++End);
+
+           if (unlikely(End == Stop))

               return 0;
 
            if (*I == '!')
               return 0;
 
            if (*I == '!')

-            {
+           {

               NegArch = true;
               NegArch = true;

-              I++;
-            }
+              ++I;
+           }

 
 

-           if (stringcmp(arch,I,End) == 0) {
+           std::string arch(I, End);
+           if (arch.empty() == false && matchesArch(arch.c_str()) == true)
+           {

               Found = true;
               Found = true;

-           } else {
-              std::string wildcard = SubstVar(string(I, End), "any", "*");
-              if (fnmatch(wildcard.c_str(), completeArch.c_str(), 0) == 0)
-                 Found = true;
+              if (I[-1] != '!')
+                 NegArch = false;
+              // we found a match, so fast-forward to the end of the wildcards
+              for (; End != Stop && *End != ']'; ++End);

            }
            }

-           
+

            if (*End++ == ']') {
               I = End;
               break;
            }
            if (*End++ == ']') {
               I = End;
               break;
            }

-           
+

            I = End;
            for (;I != Stop && isspace(*I) != 0; I++);
            I = End;
            for (;I != Stop && isspace(*I) != 0; I++);

-         }
+        }

 
 

-        if (NegArch)
+        if (NegArch == true)

            Found = !Found;
            Found = !Found;

-        
-         if (Found == false)
+
+        if (Found == false)

            Package = ""; /* not for this arch */
       }
            Package = ""; /* not for this arch */
       }

-      
+
+      // Skip whitespace
+      for (;I != Stop && isspace(*I) != 0; I++);
+   }
+
+   if (ParseRestrictionsList == true)
+   {
+      // Parse a restrictions list
+      if (I != Stop && *I == '<')
+      {
+        ++I;
+        // malformed
+        if (unlikely(I == Stop))
+           return 0;
+
+        std::vector<string> const profiles = APT::Configuration::getBuildProfiles();
+
+        const char *End = I;
+        bool Found = false;
+        bool NegRestriction = false;
+        while (I != Stop)
+        {
+           // look for whitespace or ending '>'
+           for (;End != Stop && !isspace(*End) && *End != '>'; ++End);
+
+           if (unlikely(End == Stop))
+              return 0;
+
+           if (*I == '!')
+           {
+              NegRestriction = true;
+              ++I;
+           }
+
+           std::string restriction(I, End);
+
+           std::string prefix = "profile.";
+           // only support for "profile" prefix, ignore others
+           if (restriction.size() > prefix.size() &&
+                 restriction.substr(0, prefix.size()) == prefix)
+           {
+              // get the name of the profile
+              restriction = restriction.substr(prefix.size());
+
+              if (restriction.empty() == false && profiles.empty() == false &&
+                    std::find(profiles.begin(), profiles.end(), restriction) != profiles.end())
+              {
+                 Found = true;
+                 if (I[-1] != '!')
+                    NegRestriction = false;
+                 // we found a match, so fast-forward to the end of the wildcards
+                 for (; End != Stop && *End != '>'; ++End);
+              }
+           }
+
+           if (*End++ == '>') {
+              I = End;
+              break;
+           }
+
+           I = End;
+           for (;I != Stop && isspace(*I) != 0; I++);
+        }
+
+        if (NegRestriction == true)
+           Found = !Found;
+
+        if (Found == false)
+           Package = ""; /* not for this restriction */
+      }
+

       // Skip whitespace
       for (;I != Stop && isspace(*I) != 0; I++);
    }
       // Skip whitespace
       for (;I != Stop && isspace(*I) != 0; I++);
    }


@@ -643,18 +724,21 @@ bool debListParser::ParseDepends(pkgCache::VerIterator &Ver,
    if (Section.Find(Tag,Start,Stop) == false)
       return true;
 
    if (Section.Find(Tag,Start,Stop) == false)
       return true;
 

-   string Package;
-   string const pkgArch = Ver.Arch(true);
-   string Version;
-   unsigned int Op;
+   string const pkgArch = Ver.Arch();

 
    while (1)
    {
 
    while (1)
    {

-      Start = ParseDepends(Start,Stop,Package,Version,Op);
+      string Package;
+      string Version;
+      unsigned int Op;
+
+      Start = ParseDepends(Start, Stop, Package, Version, Op, false, false, false);

       if (Start == 0)
         return _error->Error("Problem parsing dependency %s",Tag);
       if (Start == 0)
         return _error->Error("Problem parsing dependency %s",Tag);

+      size_t const found = Package.rfind(':');

 
 

-      if (MultiArchEnabled == true &&
+      // If negative is unspecific it needs to apply on all architectures
+      if (MultiArchEnabled == true && found == string::npos &&

          (Type == pkgCache::Dep::Conflicts ||
           Type == pkgCache::Dep::DpkgBreaks ||
           Type == pkgCache::Dep::Replaces))
          (Type == pkgCache::Dep::Conflicts ||
           Type == pkgCache::Dep::DpkgBreaks ||
           Type == pkgCache::Dep::Replaces))


@@ -663,9 +747,33 @@ bool debListParser::ParseDepends(pkgCache::VerIterator &Ver,
              a != Architectures.end(); ++a)
            if (NewDepends(Ver,Package,*a,Version,Op,Type) == false)
               return false;
              a != Architectures.end(); ++a)
            if (NewDepends(Ver,Package,*a,Version,Op,Type) == false)
               return false;

+        if (NewDepends(Ver,Package,"none",Version,Op,Type) == false)
+           return false;
+      }
+      else if (MultiArchEnabled == true && found != string::npos &&
+              strcmp(Package.c_str() + found, ":any") != 0)
+      {
+        string Arch = Package.substr(found+1, string::npos);
+        Package = Package.substr(0, found);
+        // Such dependencies are not supposed to be accepted …
+        // … but this is probably the best thing to do.
+        if (Arch == "native")
+           Arch = _config->Find("APT::Architecture");
+        if (NewDepends(Ver,Package,Arch,Version,Op,Type) == false)
+           return false;
+      }
+      else
+      {
+        if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false)
+           return false;
+        if ((Type == pkgCache::Dep::Conflicts ||
+             Type == pkgCache::Dep::DpkgBreaks ||
+             Type == pkgCache::Dep::Replaces) &&
+            NewDepends(Ver, Package,
+                       (pkgArch != "none") ? "none" : _config->Find("APT::Architecture"),
+                       Version,Op,Type) == false)
+           return false;

       }
       }

-      else if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false)
-        return false;

       if (Start == Stop)
         break;
    }
       if (Start == Stop)
         break;
    }


@@ -683,7 +791,7 @@ bool debListParser::ParseProvides(pkgCache::VerIterator &Ver)
    {
       string Package;
       string Version;
    {
       string Package;
       string Version;

-      string const Arch = Ver.Arch(true);
+      string const Arch = Ver.Arch();

       unsigned int Op;
 
       while (1)
       unsigned int Op;
 
       while (1)


@@ -693,6 +801,9 @@ bool debListParser::ParseProvides(pkgCache::VerIterator &Ver)
            return _error->Error("Problem parsing Provides line");
         if (Op != pkgCache::Dep::NoOp) {
            _error->Warning("Ignoring Provides line with DepCompareOp for package %s", Package.c_str());
            return _error->Error("Problem parsing Provides line");
         if (Op != pkgCache::Dep::NoOp) {
            _error->Warning("Ignoring Provides line with DepCompareOp for package %s", Package.c_str());

+        } else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) {
+           if (NewProvidesAllArch(Ver, Package, Version) == false)
+              return false;

         } else {
            if (NewProvides(Ver, Package, Arch, Version) == false)
               return false;
         } else {
            if (NewProvides(Ver, Package, Arch, Version) == false)
               return false;


@@ -703,27 +814,26 @@ bool debListParser::ParseProvides(pkgCache::VerIterator &Ver)
       }
    }
 
       }
    }
 

-   if (Ver->MultiArch == pkgCache::Version::Allowed)
+   if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)

    {
       string const Package = string(Ver.ParentPkg().Name()).append(":").append("any");
    {
       string const Package = string(Ver.ParentPkg().Name()).append(":").append("any");

-      NewProvides(Ver, Package, "any", Ver.VerStr());
+      return NewProvidesAllArch(Ver, Package, Ver.VerStr());

    }
    }

+   else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
+      return NewProvidesAllArch(Ver, Ver.ParentPkg().Name(), Ver.VerStr());

 
 

-   if (Ver->MultiArch != pkgCache::Version::Foreign)
-      return true;
-
-   if (MultiArchEnabled == false)
-      return true;
-
-   string const Package = Ver.ParentPkg().Name();
-   string const Version = Ver.VerStr();
+   return true;
+}
+                                                                       /*}}}*/
+// ListParser::NewProvides - add provides for all architectures                /*{{{*/
+bool debListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, string const &Package,
+                               string const &Version) {

    for (std::vector<string>::const_iterator a = Architectures.begin();
        a != Architectures.end(); ++a)
    {
       if (NewProvides(Ver, Package, *a, Version) == false)
         return false;
    }
    for (std::vector<string>::const_iterator a = Architectures.begin();
        a != Architectures.end(); ++a)
    {
       if (NewProvides(Ver, Package, *a, Version) == false)
         return false;
    }

-

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -745,7 +855,7 @@ bool debListParser::GrabWord(string Word,WordList *List,unsigned char &Out)
                                                                        /*}}}*/
 // ListParser::Step - Move to the next section in the file             /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // ListParser::Step - Move to the next section in the file             /*{{{*/
 // ---------------------------------------------------------------------

-/* This has to be carefull to only process the correct architecture */
+/* This has to be careful to only process the correct architecture */

 bool debListParser::Step()
 {
    iOffset = Tags.Offset();
 bool debListParser::Step()
 {
    iOffset = Tags.Offset();


@@ -755,20 +865,22 @@ bool debListParser::Step()
          drop the whole section. A missing arch tag only happens (in theory)
          inside the Status file, so that is a positive return */
       string const Architecture = Section.FindS("Architecture");
          drop the whole section. A missing arch tag only happens (in theory)
          inside the Status file, so that is a positive return */
       string const Architecture = Section.FindS("Architecture");

-      if (Architecture.empty() == true)
-        return true;

 
       if (Arch.empty() == true || Arch == "any" || MultiArchEnabled == false)
       {
         if (APT::Configuration::checkArchitecture(Architecture) == true)
            return true;
 
       if (Arch.empty() == true || Arch == "any" || MultiArchEnabled == false)
       {
         if (APT::Configuration::checkArchitecture(Architecture) == true)
            return true;

+        /* parse version stanzas without an architecture only in the status file
+           (and as misfortune bycatch flat-archives) */
+        if ((Arch.empty() == true || Arch == "any") && Architecture.empty() == true)
+           return true;

       }
       else
       {
         if (Architecture == Arch)
            return true;
 
       }
       else
       {
         if (Architecture == Arch)
            return true;
 

-        if (Architecture == "all")
+        if (Architecture == "all" && Arch == _config->Find("APT::Architecture"))

            return true;
       }
 
            return true;
       }
 


@@ -783,45 +895,33 @@ bool debListParser::Step()
 bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI,
                                    FileFd &File, string component)
 {
 bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI,
                                    FileFd &File, string component)
 {

-   pkgTagFile Tags(&File, File.Size() + 256); // XXX
-   pkgTagSection Section;
-   if (Tags.Step(Section) == false)
-      return false;
-
-   // FIXME: Do we need it now for multi-arch?
-   // mvo: I don't think we need to fill that in (it's unused since apt-0.6)
-//    FileI->Architecture = WriteUniqString(Arch);
-   

    // apt-secure does no longer download individual (per-section) Release
    // file. to provide Component pinning we use the section name now
    // apt-secure does no longer download individual (per-section) Release
    // file. to provide Component pinning we use the section name now

-   FileI->Component = WriteUniqString(component);
+   map_ptrloc const storage = WriteUniqString(component);
+   FileI->Component = storage;

 
 

-   const char *Start;
-   const char *Stop;
-   if (Section.Find("Suite",Start,Stop) == true)
-      FileI->Archive = WriteUniqString(Start,Stop - Start);
-   if (Section.Find("Component",Start,Stop) == true)
-      FileI->Component = WriteUniqString(Start,Stop - Start);
-   if (Section.Find("Version",Start,Stop) == true)
-      FileI->Version = WriteUniqString(Start,Stop - Start);
-   if (Section.Find("Origin",Start,Stop) == true)
-      FileI->Origin = WriteUniqString(Start,Stop - Start);
-   if (Section.Find("Codename",Start,Stop) == true)
-      FileI->Codename = WriteUniqString(Start,Stop - Start);
-   if (Section.Find("Label",Start,Stop) == true)
-      FileI->Label = WriteUniqString(Start,Stop - Start);
-   if (Section.Find("Architecture",Start,Stop) == true)
-      FileI->Architecture = WriteUniqString(Start,Stop - Start);
-   
-   if (Section.FindFlag("NotAutomatic",FileI->Flags,
-                       pkgCache::Flag::NotAutomatic) == false)
-      _error->Warning("Bad NotAutomatic flag");
-   if (Section.FindFlag("ButAutomaticUpgrades",FileI->Flags,
-                       pkgCache::Flag::ButAutomaticUpgrades) == false)
-      _error->Warning("Bad ButAutomaticUpgrades flag");
-   // overrule the NotAutomatic setting if needed as they are both present for compatibility
-   else if ((FileI->Flags & pkgCache::Flag::ButAutomaticUpgrades) == pkgCache::Flag::ButAutomaticUpgrades)
-      FileI->Flags &= ~pkgCache::Flag::NotAutomatic;
+   pkgTagFile TagFile(&File, File.Size());
+   pkgTagSection Section;
+   if (_error->PendingError() == true || TagFile.Step(Section) == false)
+      return false;
+
+   std::string data;
+   #define APT_INRELEASE(TAG, STORE) \
+   data = Section.FindS(TAG); \
+   if (data.empty() == false) \
+   { \
+      map_ptrloc const storage = WriteUniqString(data); \
+      STORE = storage; \
+   }
+   APT_INRELEASE("Suite", FileI->Archive)
+   APT_INRELEASE("Component", FileI->Component)
+   APT_INRELEASE("Version", FileI->Version)
+   APT_INRELEASE("Origin", FileI->Origin)
+   APT_INRELEASE("Codename", FileI->Codename)
+   APT_INRELEASE("Label", FileI->Label)
+   #undef APT_INRELEASE
+   Section.FindFlag("NotAutomatic", FileI->Flags, pkgCache::Flag::NotAutomatic);
+   Section.FindFlag("ButAutomaticUpgrades", FileI->Flags, pkgCache::Flag::ButAutomaticUpgrades);

 
    return !_error->PendingError();
 }
 
    return !_error->PendingError();
 }


@@ -838,3 +938,24 @@ unsigned char debListParser::GetPrio(string Str)
    return Out;
 }
                                                                        /*}}}*/
    return Out;
 }
                                                                        /*}}}*/

+#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
+bool debListParser::SameVersion(unsigned short const Hash,             /*{{{*/
+      pkgCache::VerIterator const &Ver)
+{
+   if (pkgCacheGenerator::ListParser::SameVersion(Hash, Ver) == false)
+      return false;
+   // status file has no (Download)Size, but all others are fair game
+   // status file is parsed last, so the first version we encounter is
+   // probably also the version we have downloaded
+   unsigned long long const Size = Section.FindULL("Size");
+   if (Size != 0 && Size != Ver->Size)
+      return false;
+   // available everywhere, but easier to check here than to include in VersionHash
+   unsigned char MultiArch = ParseMultiArch(false);
+   if (MultiArch != Ver->MultiArch)
+      return false;
+   // for all practical proposes (we can check): same version
+   return true;
+}
+                                                                       /*}}}*/
+#endif