merged (and resolved a bunch of conflicts) of the debian-sid branch

8 files changed, 520 insertions, 144 deletions

diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index 36866a35a..4de17e3e1 100644
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -171,48 +171,60 @@ string Configuration::Find(const char *Name,const char *Default) const
 string Configuration::FindFile(const char *Name,const char *Default) const
 {
    const Item *RootItem = Lookup("RootDir");
-   std::string rootDir =  (RootItem == 0) ? "" : RootItem->Value;
-   if(rootDir.size() > 0 && rootDir[rootDir.size() - 1] != '/')
-     rootDir.push_back('/');
+   std::string result =  (RootItem == 0) ? "" : RootItem->Value;
+   if(result.empty() == false && result[result.size() - 1] != '/')
+     result.push_back('/');
 
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
    {
-      if (Default == 0)
-	 return rootDir;
-      else
-	 return rootDir + Default;
+      if (Default != 0)
+	 result.append(Default);
    }
-   
-   string val = Itm->Value;
-   while (Itm->Parent != 0)
+   else
    {
-      if (Itm->Parent->Value.empty() == true)
+      string val = Itm->Value;
+      while (Itm->Parent != 0)
       {
-	 Itm = Itm->Parent;
-	 continue;
-      }
+	 if (Itm->Parent->Value.empty() == true)
+	 {
+	    Itm = Itm->Parent;
+	    continue;
+	 }
+
+	 // Absolute
+	 if (val.length() >= 1 && val[0] == '/')
+	 {
+	    if (val.compare(0, 9, "/dev/null") == 0)
+	       val.erase(9);
+	    break;
+	 }
 
-      // Absolute
-      if (val.length() >= 1 && val[0] == '/')
-         break;
+	 // ~/foo or ./foo
+	 if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
+	    break;
 
-      // ~/foo or ./foo 
-      if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
-	 break;
-	 
-      // ../foo 
-      if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
-	 break;
-      
-      if (Itm->Parent->Value.end()[-1] != '/')
-	 val.insert(0, "/");
+	 // ../foo
+	 if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
+	    break;
+
+	 if (Itm->Parent->Value.end()[-1] != '/')
+	    val.insert(0, "/");
 
-      val.insert(0, Itm->Parent->Value);
-      Itm = Itm->Parent;
+	 val.insert(0, Itm->Parent->Value);
+	 Itm = Itm->Parent;
+      }
+      result.append(val);
    }
 
-   return rootDir + val;
+   // do some normalisation by removing // and /./ from the path
+   size_t found = string::npos;
+   while ((found = result.find("/./")) != string::npos)
+      result.replace(found, 3, "/");
+   while ((found = result.find("//")) != string::npos)
+      result.replace(found, 2, "/");
+
+   return result;
 }
 									/*}}}*/
 // Configuration::FindDir - Find a directory name			/*{{{*/
@@ -222,7 +234,12 @@ string Configuration::FindDir(const char *Name,const char *Default) const
 {
    string Res = FindFile(Name,Default);
    if (Res.end()[-1] != '/')
+   {
+      size_t const found = Res.rfind("/dev/null");
+      if (found != string::npos && found == Res.size() - 9)
+	 return Res; // /dev/null returning
       return Res + '/';
+   }
    return Res;
 }
 									/*}}}*/
@@ -482,24 +499,80 @@ bool Configuration::ExistsAny(const char *Name) const
 /* Dump the entire configuration space */
 void Configuration::Dump(ostream& str)
 {
-   /* Write out all of the configuration directives by walking the 
+   Dump(str, NULL, "%f \"%v\";\n", true);
+}
+void Configuration::Dump(ostream& str, char const * const root,
+			 char const * const formatstr, bool const emptyValue)
+{
+   const Configuration::Item* Top = Tree(root);
+   if (Top == 0)
+      return;
+   const Configuration::Item* const Root = (root == NULL) ? NULL : Top;
+   std::vector<std::string> const format = VectorizeString(formatstr, '%');
+
+   /* Write out all of the configuration directives by walking the
       configuration tree */
-   const Configuration::Item *Top = Tree(0);
-   for (; Top != 0;)
-   {
-      str << Top->FullTag() << " \"" << Top->Value << "\";" << endl;
-      
+   do {
+      if (emptyValue == true || Top->Value.empty() == emptyValue)
+      {
+	 std::vector<std::string>::const_iterator f = format.begin();
+	 str << *f;
+	 for (++f; f != format.end(); ++f)
+	 {
+	    if (f->empty() == true)
+	    {
+	       ++f;
+	       str << '%' << *f;
+	       continue;
+	    }
+	    char const type = (*f)[0];
+	    if (type == 'f')
+	       str << Top->FullTag();
+	    else if (type == 't')
+	       str << Top->Tag;
+	    else if (type == 'v')
+	       str << Top->Value;
+	    else if (type == 'F')
+	       str << QuoteString(Top->FullTag(), "=\"\n");
+	    else if (type == 'T')
+	       str << QuoteString(Top->Tag, "=\"\n");
+	    else if (type == 'V')
+	       str << QuoteString(Top->Value, "=\"\n");
+	    else if (type == 'n')
+	       str << "\n";
+	    else if (type == 'N')
+	       str << "\t";
+	    else
+	       str << '%' << type;
+	    str << f->c_str() + 1;
+	 }
+      }
+
       if (Top->Child != 0)
       {
 	 Top = Top->Child;
 	 continue;
       }
-      
+
       while (Top != 0 && Top->Next == 0)
 	 Top = Top->Parent;
       if (Top != 0)
 	 Top = Top->Next;
-   }
+
+      if (Root != NULL)
+      {
+	 const Configuration::Item* I = Top;
+	 while(I != 0)
+	 {
+	    if (I == Root)
+	       break;
+	    else
+	       I = I->Parent;
+	 }
+	 if (I == 0)
+	    break;
+      }
+   } while (Top != 0);
 }
 									/*}}}*/
 
diff --git a/apt-pkg/contrib/configuration.h b/apt-pkg/contrib/configuration.h
index 4c2e75041..ea94c2fe6 100644
--- a/apt-pkg/contrib/configuration.h
+++ b/apt-pkg/contrib/configuration.h
@@ -103,6 +103,8 @@ class Configuration
 
    inline void Dump() { Dump(std::clog); };
    void Dump(std::ostream& str);
+   void Dump(std::ostream& str, char const * const root,
+	     char const * const format, bool const emptyValue);
 
    Configuration(const Item *Root);
    Configuration();
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 529e7d655..c7f78cdfb 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -44,14 +44,11 @@
 #include <set>
 #include <algorithm>
 
-// FIXME: Compressor Fds have some speed disadvantages and are a bit buggy currently,
-// so while the current implementation satisfies the testcases it is not a real option
-// to disable it for now
-#define APT_USE_ZLIB 1
-#if APT_USE_ZLIB
-#include <zlib.h>
-#else
-#pragma message "Usage of zlib is DISABLED!"
+#ifdef HAVE_ZLIB
+	#include <zlib.h>
+#endif
+#ifdef HAVE_BZ2
+	#include <bzlib.h>
 #endif
 
 #ifdef WORDS_BIGENDIAN
@@ -65,19 +62,50 @@ using namespace std;
 
 class FileFdPrivate {
 	public:
-#if APT_USE_ZLIB
+#ifdef HAVE_ZLIB
 	gzFile gz;
 #else
 	void* gz;
 #endif
+#ifdef HAVE_BZ2
+	BZFILE* bz2;
+#else
+	void* bz2;
+#endif
 	int compressed_fd;
 	pid_t compressor_pid;
 	bool pipe;
 	APT::Configuration::Compressor compressor;
 	unsigned int openmode;
 	unsigned long long seekpos;
-	FileFdPrivate() : gz(NULL), compressed_fd(-1), compressor_pid(-1), pipe(false),
+	FileFdPrivate() : gz(NULL), bz2(NULL),
+			  compressed_fd(-1), compressor_pid(-1), pipe(false),
 			  openmode(0), seekpos(0) {};
+	bool CloseDown(std::string const &FileName)
+	{
+	   bool Res = true;
+#ifdef HAVE_ZLIB
+	   if (gz != NULL) {
+	      int const e = gzclose(gz);
+	      gz = NULL;
+	      // gzdclose() on empty files always fails with "buffer error" here, ignore that
+	      if (e != 0 && e != Z_BUF_ERROR)
+		 Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str());
+	   }
+#endif
+#ifdef HAVE_BZ2
+	   if (bz2 != NULL) {
+	      BZ2_bzclose(bz2);
+	      bz2 = NULL;
+	   }
+#endif
+	   if (compressor_pid > 0)
+	      ExecWait(compressor_pid, "FileFdCompressor", true);
+	   compressor_pid = -1;
+
+	   return Res;
+	}
+	~FileFdPrivate() { CloseDown(""); }
 };
 
 // RunScripts - Run a set of scripts from a configuration subtree	/*{{{*/
@@ -387,6 +415,13 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
       {
 	 if (RealFileExists(File.c_str()) == false)
 	 {
+	    // do not show ignoration warnings for directories
+	    if (
+#ifdef _DIRENT_HAVE_D_TYPE
+		Ent->d_type == DT_DIR ||
+#endif
+		DirectoryExists(File.c_str()) == true)
+	       continue;
 	    if (SilentIgnore.Match(Ent->d_name) == false)
 	       _error->Notice(_("Ignoring '%s' in directory '%s' as it is not a regular file"), Ent->d_name, Dir.c_str());
 	    continue;
@@ -458,6 +493,80 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
       std::sort(List.begin(),List.end());
    return List;
 }
+std::vector<string> GetListOfFilesInDir(string const &Dir, bool SortList)
+{
+   bool const Debug = _config->FindB("Debug::GetListOfFilesInDir", false);
+   if (Debug == true)
+      std::clog << "Accept in " << Dir << " all regular files" << std::endl;
+
+   std::vector<string> List;
+
+   if (DirectoryExists(Dir.c_str()) == false)
+   {
+      _error->Error(_("List of files can't be created as '%s' is not a directory"), Dir.c_str());
+      return List;
+   }
+
+   DIR *D = opendir(Dir.c_str());
+   if (D == 0)
+   {
+      _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
+      return List;
+   }
+
+   for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) 
+   {
+      // skip "hidden" files
+      if (Ent->d_name[0] == '.')
+	 continue;
+
+      // Make sure it is a file and not something else
+      string const File = flCombine(Dir,Ent->d_name);
+#ifdef _DIRENT_HAVE_D_TYPE
+      if (Ent->d_type != DT_REG)
+#endif
+      {
+	 if (RealFileExists(File.c_str()) == false)
+	 {
+	    if (Debug == true)
+	       std::clog << "Bad file: " << Ent->d_name << " → it is not a real file" << std::endl;
+	    continue;
+	 }
+      }
+
+      // Skip bad filenames ala run-parts
+      const char *C = Ent->d_name;
+      for (; *C != 0; ++C)
+	 if (isalpha(*C) == 0 && isdigit(*C) == 0
+	     && *C != '_' && *C != '-' && *C != '.')
+	    break;
+
+      // we don't reach the end of the name -> bad character included
+      if (*C != 0)
+      {
+	 if (Debug == true)
+	    std::clog << "Bad file: " << Ent->d_name << " → bad character »" << *C << "« in filename" << std::endl;
+	 continue;
+      }
+
+      // skip filenames which end with a period. These are never valid
+      if (*(C - 1) == '.')
+      {
+	 if (Debug == true)
+	    std::clog << "Bad file: " << Ent->d_name << " → Period as last character" << std::endl;
+	 continue;
+      }
+
+      if (Debug == true)
+	 std::clog << "Accept file: " << Ent->d_name << " in " << Dir << std::endl;
+      List.push_back(File);
+   }
+   closedir(D);
+
+   if (SortList == true)
+      std::sort(List.begin(),List.end());
+   return List;
+}
 									/*}}}*/
 // SafeGetCWD - This is a safer getcwd that returns a dynamic string	/*{{{*/
 // ---------------------------------------------------------------------
@@ -754,7 +863,6 @@ bool FileFd::Open(string FileName,unsigned int const Mode,CompressMode Compress,
    if (Compress == Auto && (Mode & WriteOnly) == WriteOnly)
       return _error->Error("Autodetection on %s only works in ReadOnly openmode!", FileName.c_str());
 
-   // FIXME: Denote inbuilt compressors somehow - as we don't need to have the binaries for them
    std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
    std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin();
    if (Compress == Auto)
@@ -822,8 +930,6 @@ bool FileFd::Open(string FileName,unsigned int const Mode,CompressMode Compress,
 bool FileFd::Open(string FileName,unsigned int const Mode,APT::Configuration::Compressor const &compressor, unsigned long const Perms)
 {
    Close();
-   d = new FileFdPrivate;
-   d->openmode = Mode;
    Flags = AutoClose;
 
    if ((Mode & WriteOnly) != WriteOnly && (Mode & (Atomic | Create | Empty | Exclusive)) != 0)
@@ -917,8 +1023,6 @@ bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, CompressMode Compre
 bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration::Compressor const &compressor, bool AutoClose)
 {
    Close();
-   d = new FileFdPrivate;
-   d->openmode = Mode;
    Flags = (AutoClose) ? FileFd::AutoClose : 0;
    iFd = Fd;
    this->FileName = "";
@@ -932,32 +1036,71 @@ bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration:
 }
 bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor)
 {
-   d->compressor = compressor;
    if (compressor.Name == "." || compressor.Binary.empty() == true)
       return true;
-#if APT_USE_ZLIB
-   else if (compressor.Name == "gzip")
+
+   if (d == NULL)
+   {
+      d = new FileFdPrivate();
+      d->openmode = Mode;
+      d->compressor = compressor;
+   }
+
+#ifdef HAVE_ZLIB
+   if (compressor.Name == "gzip")
    {
+      if (d->gz != NULL)
+      {
+	 gzclose(d->gz);
+	 d->gz = NULL;
+      }
       if ((Mode & ReadWrite) == ReadWrite)
 	 d->gz = gzdopen(iFd, "r+");
       else if ((Mode & WriteOnly) == WriteOnly)
 	 d->gz = gzdopen(iFd, "w");
       else
-	 d->gz = gzdopen (iFd, "r");
+	 d->gz = gzdopen(iFd, "r");
       if (d->gz == NULL)
 	 return false;
       Flags |= Compressed;
       return true;
    }
 #endif
+#ifdef HAVE_BZ2
+   if (compressor.Name == "bzip2")
+   {
+      if (d->bz2 != NULL)
+      {
+	 BZ2_bzclose(d->bz2);
+	 d->bz2 = NULL;
+      }
+      if ((Mode & ReadWrite) == ReadWrite)
+	 d->bz2 = BZ2_bzdopen(iFd, "r+");
+      else if ((Mode & WriteOnly) == WriteOnly)
+	 d->bz2 = BZ2_bzdopen(iFd, "w");
+      else
+	 d->bz2 = BZ2_bzdopen(iFd, "r");
+      if (d->bz2 == NULL)
+	 return false;
+      Flags |= Compressed;
+      return true;
+   }
+#endif
+
+   // collect zombies here in case we reopen
+   if (d->compressor_pid > 0)
+      ExecWait(d->compressor_pid, "FileFdCompressor", true);
 
    if ((Mode & ReadWrite) == ReadWrite)
+   {
+      Flags |= Fail;
       return _error->Error("ReadWrite mode is not supported for file %s", FileName.c_str());
+   }
 
    bool const Comp = (Mode & WriteOnly) == WriteOnly;
-   // Handle 'decompression' of empty files
    if (Comp == false)
    {
+      // Handle 'decompression' of empty files
       struct stat Buf;
       fstat(iFd, &Buf);
       if (Buf.st_size == 0 && S_ISFIFO(Buf.st_mode) == false)
@@ -966,13 +1109,19 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
       // We don't need the file open - instead let the compressor open it
       // as he properly knows better how to efficiently read from 'his' file
       if (FileName.empty() == false)
+      {
 	 close(iFd);
+	 iFd = -1;
+      }
    }
 
    // Create a data pipe
    int Pipe[2] = {-1,-1};
    if (pipe(Pipe) != 0)
+   {
+      Flags |= Fail;
       return _error->Errno("pipe",_("Failed to create subprocess IPC"));
+   }
    for (int J = 0; J != 2; J++)
       SetCloseExec(Pipe[J],true);
 
@@ -999,6 +1148,12 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
 	    dup2(d->compressed_fd,STDIN_FILENO);
 	 dup2(Pipe[1],STDOUT_FILENO);
       }
+      int const nullfd = open("/dev/null", O_WRONLY);
+      if (nullfd != -1)
+      {
+	 dup2(nullfd,STDERR_FILENO);
+	 close(nullfd);
+      }
 
       SetCloseExec(STDOUT_FILENO,false);
       SetCloseExec(STDIN_FILENO,false);
@@ -1028,7 +1183,7 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
       close(Pipe[0]);
    else
       close(Pipe[1]);
-   if (Comp == true || FileName.empty() == true)
+   if ((Comp == true || FileName.empty() == true) && d->compressed_fd != -1)
       close(d->compressed_fd);
 
    return true;
@@ -1041,6 +1196,12 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
 FileFd::~FileFd()
 {
    Close();
+   if (d != NULL)
+   {
+      d->CloseDown(FileName);
+      delete d;
+      d = NULL;
+   }
 }
 									/*}}}*/
 // FileFd::Read - Read a bit of the file				/*{{{*/
@@ -1056,9 +1217,14 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
    *((char *)To) = '\0';
    do
    {
-#if APT_USE_ZLIB
-      if (d->gz != NULL)
-         Res = gzread(d->gz,To,Size);
+#ifdef HAVE_ZLIB
+      if (d != NULL && d->gz != NULL)
+	 Res = gzread(d->gz,To,Size);
+      else
+#endif
+#ifdef HAVE_BZ2
+      if (d != NULL && d->bz2 != NULL)
+	 Res = BZ2_bzread(d->bz2,To,Size);
       else
 #endif
          Res = read(iFd,To,Size);
@@ -1068,8 +1234,8 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
 	 if (errno == EINTR)
 	    continue;
 	 Flags |= Fail;
-#if APT_USE_ZLIB
-	 if (d->gz != NULL)
+#ifdef HAVE_ZLIB
+	 if (d != NULL && d->gz != NULL)
 	 {
 	    int err;
 	    char const * const errmsg = gzerror(d->gz, &err);
@@ -1077,12 +1243,22 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
 	       return _error->Error("gzread: %s (%d: %s)", _("Read error"), err, errmsg);
 	 }
 #endif
+#ifdef HAVE_BZ2
+	 if (d != NULL && d->bz2 != NULL)
+	 {
+	    int err;
+	    char const * const errmsg = BZ2_bzerror(d->bz2, &err);
+	    if (err != BZ_IO_ERROR)
+	       return _error->Error("BZ2_bzread: %s (%d: %s)", _("Read error"), err, errmsg);
+	 }
+#endif
 	 return _error->Errno("read",_("Read error"));
       }
       
       To = (char *)To + Res;
       Size -= Res;
-      d->seekpos += Res;
+      if (d != NULL)
+	 d->seekpos += Res;
       if (Actual != 0)
 	 *Actual += Res;
    }
@@ -1109,8 +1285,8 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
 char* FileFd::ReadLine(char *To, unsigned long long const Size)
 {
    *To = '\0';
-#if APT_USE_ZLIB
-   if (d->gz != NULL)
+#ifdef HAVE_ZLIB
+   if (d != NULL && d->gz != NULL)
       return gzgets(d->gz, To, Size);
 #endif
 
@@ -1140,23 +1316,47 @@ bool FileFd::Write(const void *From,unsigned long long Size)
    errno = 0;
    do
    {
-#if APT_USE_ZLIB
-      if (d->gz != NULL)
+#ifdef HAVE_ZLIB
+      if (d != NULL && d->gz != NULL)
          Res = gzwrite(d->gz,From,Size);
       else
 #endif
+#ifdef HAVE_BZ2
+      if (d != NULL && d->bz2 != NULL)
+         Res = BZ2_bzwrite(d->bz2,(void*)From,Size);
+      else
+#endif
          Res = write(iFd,From,Size);
       if (Res < 0 && errno == EINTR)
 	 continue;
       if (Res < 0)
       {
 	 Flags |= Fail;
+#ifdef HAVE_ZLIB
+	 if (d != NULL && d->gz != NULL)
+	 {
+	    int err;
+	    char const * const errmsg = gzerror(d->gz, &err);
+	    if (err != Z_ERRNO)
+	       return _error->Error("gzwrite: %s (%d: %s)", _("Write error"), err, errmsg);
+	 }
+#endif
+#ifdef HAVE_BZ2
+	 if (d != NULL && d->bz2 != NULL)
+	 {
+	    int err;
+	    char const * const errmsg = BZ2_bzerror(d->bz2, &err);
+	    if (err != BZ_IO_ERROR)
+	       return _error->Error("BZ2_bzwrite: %s (%d: %s)", _("Write error"), err, errmsg);
+	 }
+#endif
 	 return _error->Errno("write",_("Write error"));
       }
       
       From = (char *)From + Res;
       Size -= Res;
-      d->seekpos += Res;
+      if (d != NULL)
+	 d->seekpos += Res;
    }
    while (Res > 0 && Size > 0);
    
@@ -1166,13 +1366,39 @@ bool FileFd::Write(const void *From,unsigned long long Size)
    Flags |= Fail;
    return _error->Error(_("write, still have %llu to write but couldn't"), Size);
 }
+bool FileFd::Write(int Fd, const void *From, unsigned long long Size)
+{
+   int Res;
+   errno = 0;
+   do
+   {
+      Res = write(Fd,From,Size);
+      if (Res < 0 && errno == EINTR)
+	 continue;
+      if (Res < 0)
+	 return _error->Errno("write",_("Write error"));
+
+      From = (char *)From + Res;
+      Size -= Res;
+   }
+   while (Res > 0 && Size > 0);
+
+   if (Size == 0)
+      return true;
+
+   return _error->Error(_("write, still have %llu to write but couldn't"), Size);
+}
 									/*}}}*/
 // FileFd::Seek - Seek in the file					/*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool FileFd::Seek(unsigned long long To)
 {
-   if (d->pipe == true)
+   if (d != NULL && (d->pipe == true
+#ifdef HAVE_BZ2
+			|| d->bz2 != NULL
+#endif
+	))
    {
       // Our poor man seeking in pipes is costly, so try to avoid it
       unsigned long long seekpos = Tell();
@@ -1182,9 +1408,17 @@ bool FileFd::Seek(unsigned long long To)
 	 return Skip(To - seekpos);
 
       if ((d->openmode & ReadOnly) != ReadOnly)
+      {
+	 Flags |= Fail;
 	 return _error->Error("Reopen is only implemented for read-only files!");
-      close(iFd);
-      iFd = 0;
+      }
+#ifdef HAVE_BZ2
+      if (d->bz2 != NULL)
+	 BZ2_bzclose(d->bz2);
+#endif
+      if (iFd != -1)
+	 close(iFd);
+      iFd = -1;
       if (TemporaryFileName.empty() == false)
 	 iFd = open(TemporaryFileName.c_str(), O_RDONLY);
       else if (FileName.empty() == false)
@@ -1194,12 +1428,18 @@ bool FileFd::Seek(unsigned long long To)
 	 if (d->compressed_fd > 0)
 	    if (lseek(d->compressed_fd, 0, SEEK_SET) != 0)
 	       iFd = d->compressed_fd;
-	 if (iFd <= 0)
+	 if (iFd < 0)
+	 {
+	    Flags |= Fail;
 	    return _error->Error("Reopen is not implemented for pipes opened with FileFd::OpenDescriptor()!");
+	 }
       }
 
       if (OpenInternDescriptor(d->openmode, d->compressor) == false)
+      {
+	 Flags |= Fail;
 	 return _error->Error("Seek on file %s because it couldn't be reopened", FileName.c_str());
+      }
 
       if (To != 0)
 	 return Skip(To);
@@ -1208,8 +1448,8 @@ bool FileFd::Seek(unsigned long long To)
       return true;
    }
    int res;
-#if APT_USE_ZLIB
-   if (d->gz)
+#ifdef HAVE_ZLIB
+   if (d != NULL && d->gz)
       res = gzseek(d->gz,To,SEEK_SET);
    else
 #endif
@@ -1220,7 +1460,8 @@ bool FileFd::Seek(unsigned long long To)
       return _error->Error("Unable to seek to %llu", To);
    }
 
-   d->seekpos = To;
+   if (d != NULL)
+      d->seekpos = To;
    return true;
 }
 									/*}}}*/
@@ -1229,7 +1470,11 @@ bool FileFd::Seek(unsigned long long To)
 /* */
 bool FileFd::Skip(unsigned long long Over)
 {
-   if (d->pipe == true)
+   if (d != NULL && (d->pipe == true
+#ifdef HAVE_BZ2
+			|| d->bz2 != NULL
+#endif
+	))
    {
       d->seekpos += Over;
       char buffer[1024];
@@ -1237,15 +1482,18 @@ bool FileFd::Skip(unsigned long long Over)
       {
 	 unsigned long long toread = std::min((unsigned long long) sizeof(buffer), Over);
 	 if (Read(buffer, toread) == false)
+	 {
+	    Flags |= Fail;
 	    return _error->Error("Unable to seek ahead %llu",Over);
+	 }
 	 Over -= toread;
       }
       return true;
    }
 
    int res;
-#if APT_USE_ZLIB
-   if (d->gz != NULL)
+#ifdef HAVE_ZLIB
+   if (d != NULL && d->gz != NULL)
       res = gzseek(d->gz,Over,SEEK_CUR);
    else
 #endif
@@ -1255,7 +1503,8 @@ bool FileFd::Skip(unsigned long long Over)
       Flags |= Fail;
       return _error->Error("Unable to seek ahead %llu",Over);
    }
-   d->seekpos = res;
+   if (d != NULL)
+      d->seekpos = res;
 
    return true;
 }
@@ -1265,11 +1514,13 @@ bool FileFd::Skip(unsigned long long Over)
 /* */
 bool FileFd::Truncate(unsigned long long To)
 {
-   if (d->gz != NULL)
+#if defined HAVE_ZLIB || defined HAVE_BZ2
+   if (d != NULL && (d->gz != NULL || d->bz2 != NULL))
    {
       Flags |= Fail;
-      return _error->Error("Truncating gzipped files is not implemented (%s)", FileName.c_str());
+      return _error->Error("Truncating compressed files is not implemented (%s)", FileName.c_str());
    }
+#endif
    if (ftruncate(iFd,To) != 0)
    {
       Flags |= Fail;
@@ -1288,19 +1539,27 @@ unsigned long long FileFd::Tell()
    // seeking around, but not all users of FileFd use always Seek() and co
    // so d->seekpos isn't always true and we can just use it as a hint if
    // we have nothing else, but not always as an authority…
-   if (d->pipe == true)
+   if (d != NULL && (d->pipe == true
+#ifdef HAVE_BZ2
+			|| d->bz2 != NULL
+#endif
+	))
       return d->seekpos;
 
    off_t Res;
-#if APT_USE_ZLIB
-   if (d->gz != NULL)
+#ifdef HAVE_ZLIB
+   if (d != NULL && d->gz != NULL)
      Res = gztell(d->gz);
    else
 #endif
      Res = lseek(iFd,0,SEEK_CUR);
    if (Res == (off_t)-1)
+   {
+      Flags |= Fail;
       _error->Errno("lseek","Failed to determine the current file position");
-   d->seekpos = Res;
+   }
+   if (d != NULL)
+      d->seekpos = Res;
    return Res;
 }
 									/*}}}*/
@@ -1310,17 +1569,24 @@ unsigned long long FileFd::Tell()
 unsigned long long FileFd::FileSize()
 {
    struct stat Buf;
-   if (d->pipe == false && fstat(iFd,&Buf) != 0)
+   if ((d == NULL || d->pipe == false) && fstat(iFd,&Buf) != 0)
+   {
+      Flags |= Fail;
       return _error->Errno("fstat","Unable to determine the file size");
+   }
 
    // for compressor pipes st_size is undefined and at 'best' zero
-   if (d->pipe == true || S_ISFIFO(Buf.st_mode))
+   if ((d != NULL && d->pipe == true) || S_ISFIFO(Buf.st_mode))
    {
       // we set it here, too, as we get the info here for free
       // in theory the Open-methods should take care of it already
-      d->pipe = true;
+      if (d != NULL)
+	 d->pipe = true;
       if (stat(FileName.c_str(), &Buf) != 0)
+      {
+	 Flags |= Fail;
 	 return _error->Errno("stat","Unable to determine the file size");
+      }
    }
 
    return Buf.st_size;
@@ -1335,7 +1601,11 @@ unsigned long long FileFd::Size()
 
    // for compressor pipes st_size is undefined and at 'best' zero,
    // so we 'read' the content and 'seek' back - see there
-   if (d->pipe == true)
+   if (d != NULL && (d->pipe == true
+#ifdef HAVE_BZ2
+			|| (d->bz2 && size > 0)
+#endif
+	))
    {
       unsigned long long const oldSeek = Tell();
       char ignore[1000];
@@ -1346,11 +1616,11 @@ unsigned long long FileFd::Size()
       size = Tell();
       Seek(oldSeek);
    }
-#if APT_USE_ZLIB
+#ifdef HAVE_ZLIB
    // only check gzsize if we are actually a gzip file, just checking for
    // "gz" is not sufficient as uncompressed files could be opened with
    // gzopen in "direct" mode as well
-   else if (d->gz && !gzdirect(d->gz) && size > 0)
+   else if (d != NULL && d->gz && !gzdirect(d->gz) && size > 0)
    {
        off_t const oldPos = lseek(iFd,0,SEEK_CUR);
        /* unfortunately zlib.h doesn't provide a gzsize(), so we have to do
@@ -1358,10 +1628,16 @@ unsigned long long FileFd::Size()
 	* bits of the file */
        // FIXME: Size for gz-files is limited by 32bit… no largefile support
        if (lseek(iFd, -4, SEEK_END) < 0)
-	   return _error->Errno("lseek","Unable to seek to end of gzipped file");
+       {
+	  Flags |= Fail;
+	  return _error->Errno("lseek","Unable to seek to end of gzipped file");
+       }
        size = 0L;
        if (read(iFd, &size, 4) != 4)
-	   return _error->Errno("read","Unable to read original size of gzipped file");
+       {
+	  Flags |= Fail;
+	  return _error->Errno("read","Unable to read original size of gzipped file");
+       }
 
 #ifdef WORDS_BIGENDIAN
        uint32_t tmp_size = size;
@@ -1371,7 +1647,10 @@ unsigned long long FileFd::Size()
 #endif
 
        if (lseek(iFd, oldPos, SEEK_SET) < 0)
-	   return _error->Errno("lseek","Unable to seek in gzipped file");
+       {
+	  Flags |= Fail;
+	  return _error->Errno("lseek","Unable to seek in gzipped file");
+       }
 
        return size;
    }
@@ -1386,20 +1665,23 @@ unsigned long long FileFd::Size()
 time_t FileFd::ModificationTime()
 {
    struct stat Buf;
-   if (d->pipe == false && fstat(iFd,&Buf) != 0)
+   if ((d == NULL || d->pipe == false) && fstat(iFd,&Buf) != 0)
    {
+      Flags |= Fail;
       _error->Errno("fstat","Unable to determine the modification time of file %s", FileName.c_str());
       return 0;
    }
 
    // for compressor pipes st_size is undefined and at 'best' zero
-   if (d->pipe == true || S_ISFIFO(Buf.st_mode))
+   if ((d != NULL && d->pipe == true) || S_ISFIFO(Buf.st_mode))
    {
       // we set it here, too, as we get the info here for free
       // in theory the Open-methods should take care of it already
-      d->pipe = true;
+      if (d != NULL)
+	 d->pipe = true;
       if (stat(FileName.c_str(), &Buf) != 0)
       {
+	 Flags |= Fail;
 	 _error->Errno("fstat","Unable to determine the modification time of file %s", FileName.c_str());
 	 return 0;
       }
@@ -1419,16 +1701,15 @@ bool FileFd::Close()
    bool Res = true;
    if ((Flags & AutoClose) == AutoClose)
    {
-#if APT_USE_ZLIB
-      if (d != NULL && d->gz != NULL) {
-	 int const e = gzclose(d->gz);
-	 // gzdclose() on empty files always fails with "buffer error" here, ignore that
-	 if (e != 0 && e != Z_BUF_ERROR)
-	    Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str());
-      } else
-#endif
-	 if (iFd > 0 && close(iFd) != 0)
-	    Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str());
+      if ((Flags & Compressed) != Compressed && iFd > 0 && close(iFd) != 0)
+	 Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str());
+
+      if (d != NULL)
+      {
+	 Res &= d->CloseDown(FileName);
+	 delete d;
+	 d = NULL;
+      }
    }
 
    if ((Flags & Replace) == Replace && iFd >= 0) {
@@ -1446,14 +1727,8 @@ bool FileFd::Close()
       if (unlink(FileName.c_str()) != 0)
 	 Res &= _error->WarningE("unlnk",_("Problem unlinking the file %s"), FileName.c_str());
 
-   if (d != NULL)
-   {
-      if (d->compressor_pid > 0)
-	 ExecWait(d->compressor_pid, "FileFdCompressor", true);
-      delete d;
-      d = NULL;
-   }
-
+   if (Res == false)
+      Flags |= Fail;
    return Res;
 }
 									/*}}}*/
@@ -1464,7 +1739,10 @@ bool FileFd::Sync()
 {
 #ifdef _POSIX_SYNCHRONIZED_IO
    if (fsync(iFd) != 0)
+   {
+      Flags |= Fail;
       return _error->Errno("sync",_("Problem syncing the file"));
+   }
 #endif
    return true;
 }
diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 3814cfe44..426664d3a 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -78,6 +78,7 @@ class FileFd
    bool Read(void *To,unsigned long long Size,unsigned long long *Actual = 0);
    char* ReadLine(char *To, unsigned long long const Size);
    bool Write(const void *From,unsigned long long Size);
+   bool static Write(int Fd, const void *From, unsigned long long Size);
    bool Seek(unsigned long long To);
    bool Skip(unsigned long long To);
    bool Truncate(unsigned long long To);
@@ -171,6 +172,7 @@ std::vector<std::string> GetListOfFilesInDir(std::string const &Dir, std::string
 					bool const &SortList, bool const &AllowNoExt=false);
 std::vector<std::string> GetListOfFilesInDir(std::string const &Dir, std::vector<std::string> const &Ext,
 					bool const &SortList);
+std::vector<std::string> GetListOfFilesInDir(std::string const &Dir, bool SortList);
 std::string SafeGetCWD();
 void SetCloseExec(int Fd,bool Close);
 void SetNonBlock(int Fd,bool Block);
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 160718ea5..2d12b6fe9 100644
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -84,6 +84,7 @@ bool MMap::Map(FileFd &Fd)
       if ((Flags & ReadOnly) != ReadOnly)
 	 return _error->Error("Compressed file %s can only be mapped readonly", Fd.Name().c_str());
       Base = new unsigned char[iSize];
+      SyncToFd = new FileFd();
       if (Fd.Seek(0L) == false || Fd.Read(Base, iSize) == false)
 	 return _error->Error("Compressed file %s can't be read into mmap", Fd.Name().c_str());
       return true;
diff --git a/apt-pkg/contrib/netrc.cc b/apt-pkg/contrib/netrc.cc
index cb7d36088..56e59d84b 100644
--- a/apt-pkg/contrib/netrc.cc
+++ b/apt-pkg/contrib/netrc.cc
@@ -68,8 +68,7 @@ int parsenetrc (char *host, char *login, char *password, char *netrcfile = NULL)
     if (!home)
       return -1;
 
-    asprintf (&netrcfile, "%s%s%s", home, DIR_CHAR, NETRC);
-    if(!netrcfile)
+    if (asprintf (&netrcfile, "%s%s%s", home, DIR_CHAR, NETRC) == -1 || netrcfile == NULL)
       return -1;
     else
       netrc_alloc = true;
diff --git a/apt-pkg/contrib/sha2_internal.cc b/apt-pkg/contrib/sha2_internal.cc
index 6d27e8f2b..83b5a98d3 100644
--- a/apt-pkg/contrib/sha2_internal.cc
+++ b/apt-pkg/contrib/sha2_internal.cc
@@ -552,7 +552,9 @@ void SHA256_Update(SHA256_CTX* context, const sha2_byte *data, size_t len) {
 	}
 	while (len >= SHA256_BLOCK_LENGTH) {
 		/* Process as many complete blocks as we can */
-		SHA256_Transform(context, (sha2_word32*)data);
+		sha2_byte buffer[SHA256_BLOCK_LENGTH];
+		MEMCPY_BCOPY(buffer, data, SHA256_BLOCK_LENGTH);
+		SHA256_Transform(context, (sha2_word32*)buffer);
 		context->bitcount += SHA256_BLOCK_LENGTH << 3;
 		len -= SHA256_BLOCK_LENGTH;
 		data += SHA256_BLOCK_LENGTH;
@@ -879,7 +881,9 @@ void SHA512_Update(SHA512_CTX* context, const sha2_byte *data, size_t len) {
 	}
 	while (len >= SHA512_BLOCK_LENGTH) {
 		/* Process as many complete blocks as we can */
-		SHA512_Transform(context, (sha2_word64*)data);
+		sha2_byte buffer[SHA512_BLOCK_LENGTH];
+		MEMCPY_BCOPY(buffer, data, SHA512_BLOCK_LENGTH);
+		SHA512_Transform(context, (sha2_word64*)buffer);
 		ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
 		len -= SHA512_BLOCK_LENGTH;
 		data += SHA512_BLOCK_LENGTH;
diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 861cdcbeb..ca096d736 100644
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -23,6 +23,7 @@
 
 #include <ctype.h>
 #include <string.h>
+#include <sstream>
 #include <stdio.h>
 #include <algorithm>
 #include <unistd.h>
@@ -910,17 +911,17 @@ bool StrToTime(const string &Val,time_t &Result)
 
    // Handle RFC 1123 time
    Month[0] = 0;
-   if (sscanf(I," %d %3s %d %d:%d:%d GMT",&Tm.tm_mday,Month,&Tm.tm_year,
+   if (sscanf(I," %2d %3s %4d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,&Tm.tm_year,
 	      &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) != 6)
    {
       // Handle RFC 1036 time
-      if (sscanf(I," %d-%3s-%d %d:%d:%d GMT",&Tm.tm_mday,Month,
+      if (sscanf(I," %2d-%3s-%3d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,
 		 &Tm.tm_year,&Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) == 6)
 	 Tm.tm_year += 1900;
       else
       {
 	 // asctime format
-	 if (sscanf(I," %3s %d %d:%d:%d %d",Month,&Tm.tm_mday,
+	 if (sscanf(I," %3s %2d %2d:%2d:%2d %4d",Month,&Tm.tm_mday,
 		    &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec,&Tm.tm_year) != 6)
 	 {
 	    // 'ftp' time
@@ -1168,34 +1169,50 @@ unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
    return Hits;
 }
 									/*}}}*/
-// ioprintf - C format string outputter to C++ iostreams		/*{{{*/
+// {str,io}printf - C format string outputter to C++ strings/iostreams	/*{{{*/
 // ---------------------------------------------------------------------
 /* This is used to make the internationalization strings easier to translate
    and to allow reordering of parameters */
-void ioprintf(ostream &out,const char *format,...) 
+static bool iovprintf(ostream &out, const char *format,
+		      va_list &args, ssize_t &size) {
+   char *S = (char*)malloc(size);
+   ssize_t const n = vsnprintf(S, size, format, args);
+   if (n > -1 && n < size) {
+      out << S;
+      free(S);
+      return true;
+   } else {
+      if (n > -1)
+	 size = n + 1;
+      else
+	 size *= 2;
+   }
+   free(S);
+   return false;
+}
+void ioprintf(ostream &out,const char *format,...)
 {
    va_list args;
-   va_start(args,format);
-   
-   // sprintf the description
-   char S[4096];
-   vsnprintf(S,sizeof(S),format,args);
-   out << S;
+   ssize_t size = 400;
+   while (true) {
+      va_start(args,format);
+      if (iovprintf(out, format, args, size) == true)
+	 return;
+      va_end(args);
+   }
 }
-									/*}}}*/
-// strprintf - C format string outputter to C++ strings 		/*{{{*/
-// ---------------------------------------------------------------------
-/* This is used to make the internationalization strings easier to translate
-   and to allow reordering of parameters */
-void strprintf(string &out,const char *format,...) 
+void strprintf(string &out,const char *format,...)
 {
    va_list args;
-   va_start(args,format);
-   
-   // sprintf the description
-   char S[4096];
-   vsnprintf(S,sizeof(S),format,args);
-   out = string(S);
+   ssize_t size = 400;
+   std::ostringstream outstr;
+   while (true) {
+      va_start(args,format);
+      if (iovprintf(outstr, format, args, size) == true)
+	 break;
+      va_end(args);
+   }
+   out = outstr.str();
 }
 									/*}}}*/
 // safe_snprintf - Safer snprintf					/*{{{*/