commit debian/changelog for final 0.7.25.2 upload

[apt.git] / apt-pkg / acquire-item.cc

diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index 38977d2b1cc76f1b603d4952a5e5bbbdb8d3eb38..d2aca597ecc553d55fd08719bc8568c5311985bb 100644 (file)
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -13,11 +13,9 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

-#ifdef __GNUG__
-#pragma implementation "apt-pkg/acquire-item.h"
-#endif

 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/configuration.h>

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

 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/vendorlist.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/vendorlist.h>
 #include <apt-pkg/error.h>


@@ -98,12 +96,13 @@ void pkgAcquire::Item::Start(string /*Message*/,unsigned long Size)
 // Acquire::Item::Done - Item downloaded OK                            /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Acquire::Item::Done - Item downloaded OK                            /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void pkgAcquire::Item::Done(string Message,unsigned long Size,string,
+void pkgAcquire::Item::Done(string Message,unsigned long Size,string Hash,

                            pkgAcquire::MethodConfig *Cnf)
 {
    // We just downloaded something..
    string FileName = LookupTag(Message,"Filename");
                            pkgAcquire::MethodConfig *Cnf)
 {
    // We just downloaded something..
    string FileName = LookupTag(Message,"Filename");

-   if (Complete == false && FileName == DestFile)
+   // we only inform the Log class if it was actually not a local thing
+   if (Complete == false && !Local && FileName == DestFile)

    {
       if (Owner->Log != 0)
         Owner->Log->Fetched(Size,atoi(LookupTag(Message,"Resume-Point","0").c_str()));
    {
       if (Owner->Log != 0)
         Owner->Log->Fetched(Size,atoi(LookupTag(Message,"Resume-Point","0").c_str()));


@@ -133,9 +132,7 @@ void pkgAcquire::Item::Rename(string From,string To)
    }   
 }
                                                                        /*}}}*/
    }   
 }
                                                                        /*}}}*/

-
-
-// AcqDiffIndex::AcqDiffIndex - Constructor                    
+// AcqDiffIndex::AcqDiffIndex - Constructor                            /*{{{*/

 // ---------------------------------------------------------------------
 /* Get the DiffIndex file first and see if there are patches availabe 
  * If so, create a pkgAcqIndexDiffs fetcher that will get and apply the
 // ---------------------------------------------------------------------
 /* Get the DiffIndex file first and see if there are patches availabe 
  * If so, create a pkgAcqIndexDiffs fetcher that will get and apply the


@@ -144,8 +141,9 @@ void pkgAcquire::Item::Rename(string From,string To)
  */
 pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner,
                                 string URI,string URIDesc,string ShortDesc,
  */
 pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner,
                                 string URI,string URIDesc,string ShortDesc,

-                                string ExpectedMD5)
-   : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5), Description(URIDesc)
+                                HashString ExpectedHash)
+   : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash),
+     Description(URIDesc)

 {
    
    Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
 {
    
    Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);


@@ -185,7 +183,7 @@ pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner,
    QueueURI(Desc);
 
 }
    QueueURI(Desc);
 
 }

-
+                                                                       /*}}}*/

 // AcqIndex::Custom600Headers - Insert custom request headers          /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
 // AcqIndex::Custom600Headers - Insert custom request headers          /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */


@@ -203,9 +201,8 @@ string pkgAcqDiffIndex::Custom600Headers()
    
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }
    
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }

-
-
-bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)
+                                                                       /*}}}*/
+bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)             /*{{{*/

 {
    if(Debug)
       std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile 
 {
    if(Debug)
       std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile 


@@ -222,19 +219,19 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)
 
    if(TF.Step(Tags) == true)
    {
 
    if(TF.Step(Tags) == true)
    {

-      string local_sha1;

       bool found = false;
       DiffInfo d;
       string size;
 
       bool found = false;
       DiffInfo d;
       string size;
 

-      string tmp = Tags.FindS("SHA1-Current");
+      string const tmp = Tags.FindS("SHA1-Current");

       std::stringstream ss(tmp);
       std::stringstream ss(tmp);

-      ss >> ServerSha1;
+      ss >> ServerSha1 >> size;
+      unsigned long const ServerSize = atol(size.c_str());

 
       FileFd fd(CurrentPackagesFile, FileFd::ReadOnly);
       SHA1Summation SHA1;
       SHA1.AddFD(fd.Fd(), fd.Size());
 
       FileFd fd(CurrentPackagesFile, FileFd::ReadOnly);
       SHA1Summation SHA1;
       SHA1.AddFD(fd.Fd(), fd.Size());

-      local_sha1 = string(SHA1.Result());
+      string const local_sha1 = SHA1.Result();

 
       if(local_sha1 == ServerSha1) 
       {
 
       if(local_sha1 == ServerSha1) 
       {


@@ -251,62 +248,99 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)
            std::clog << "SHA1-Current: " << ServerSha1 << std::endl;
 
         // check the historie and see what patches we need
            std::clog << "SHA1-Current: " << ServerSha1 << std::endl;
 
         // check the historie and see what patches we need

-        string history = Tags.FindS("SHA1-History");     
+        string const history = Tags.FindS("SHA1-History");

         std::stringstream hist(history);
         std::stringstream hist(history);

-        while(hist >> d.sha1 >> size >> d.file) 
+        while(hist >> d.sha1 >> size >> d.file)

         {
         {

-           d.size = atoi(size.c_str());

            // read until the first match is found
            // read until the first match is found

+           // from that point on, we probably need all diffs

            if(d.sha1 == local_sha1) 
               found=true;
            if(d.sha1 == local_sha1) 
               found=true;

-           // from that point on, we probably need all diffs
-           if(found) 
+           else if (found == false)
+              continue;
+
+           if(Debug)
+              std::clog << "Need to get diff: " << d.file << std::endl;
+           available_patches.push_back(d);
+        }
+
+        if (available_patches.empty() == false)
+        {
+           // patching with too many files is rather slow compared to a fast download
+           unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0);
+           if (fileLimit != 0 && fileLimit < available_patches.size())
+           {
+              if (Debug)
+                 std::clog << "Need " << available_patches.size() << " diffs (Limit is " << fileLimit
+                       << ") so fallback to complete download" << std::endl;
+              return false;
+           }
+
+           // see if the patches are too big
+           found = false; // it was true and it will be true again at the end
+           d = *available_patches.begin();
+           string const firstPatch = d.file;
+           unsigned long patchesSize = 0;
+           std::stringstream patches(Tags.FindS("SHA1-Patches"));
+           while(patches >> d.sha1 >> size >> d.file)

            {
            {

-              if(Debug)
-                 std::clog << "Need to get diff: " << d.file << std::endl;
-              available_patches.push_back(d);
+              if (firstPatch == d.file)
+                 found = true;
+              else if (found == false)
+                 continue;
+
+              patchesSize += atol(size.c_str());
+           }
+           unsigned long const sizeLimit = ServerSize * _config->FindI("Acquire::PDiffs::SizeLimit", 100);
+           if (sizeLimit > 0 && (sizeLimit/100) < patchesSize)
+           {
+              if (Debug)
+                 std::clog << "Need " << patchesSize << " bytes (Limit is " << sizeLimit/100
+                       << ") so fallback to complete download" << std::endl;
+              return false;

            }
         }
       }
 
            }
         }
       }
 

-      // no information how to get the patches, bail out
-      if(!found) 
-      {
-        if(Debug)
-           std::clog << "Can't find a patch in the index file" << std::endl;
-        // Failed will queue a big package file
-        Failed("", NULL);
-      } 
-      else 
+      // we have something, queue the next diff
+      if(found) 

       {
         // queue the diffs
       {
         // queue the diffs

+        string::size_type const last_space = Description.rfind(" ");
+        if(last_space != string::npos)
+           Description.erase(last_space, Description.size()-last_space);

         new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
         new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,

-                             ExpectedMD5, available_patches);
+                             ExpectedHash, available_patches);

         Complete = false;
         Status = StatDone;
         Dequeue();
         return true;
       }
    }
         Complete = false;
         Status = StatDone;
         Dequeue();
         return true;
       }
    }

-
+   
+   // Nothing found, report and return false
+   // Failing here is ok, if we return false later, the full
+   // IndexFile is queued
+   if(Debug)
+      std::clog << "Can't find a patch in the index file" << std::endl;

    return false;
 }
    return false;
 }

-
-void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
+                                                                       /*}}}*/
+void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)     /*{{{*/

 {
    if(Debug)
       std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << std::endl
                << "Falling back to normal index file aquire" << std::endl;
 
    new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc, 
 {
    if(Debug)
       std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << std::endl
                << "Falling back to normal index file aquire" << std::endl;
 
    new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc, 

-                  ExpectedMD5);
+                  ExpectedHash);

 
    Complete = false;
    Status = StatDone;
    Dequeue();
 }
 
    Complete = false;
    Status = StatDone;
    Dequeue();
 }

-
-void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash,
+                                                                       /*}}}*/
+void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash,   /*{{{*/

                           pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)
                           pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)


@@ -335,18 +369,17 @@ void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash,
    Dequeue();
    return;
 }
    Dequeue();
    return;
 }

-
-
-
-// AcqIndexDiffs::AcqIndexDiffs - Constructor                  
+                                                                       /*}}}*/
+// AcqIndexDiffs::AcqIndexDiffs - Constructor                          /*{{{*/

 // ---------------------------------------------------------------------
 /* The package diff is added to the queue. one object is constructed
  * for each diff and the index
  */
 pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
                                   string URI,string URIDesc,string ShortDesc,
 // ---------------------------------------------------------------------
 /* The package diff is added to the queue. one object is constructed
  * for each diff and the index
  */
 pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
                                   string URI,string URIDesc,string ShortDesc,

-                                  string ExpectedMD5, vector<DiffInfo> diffs)
-   : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5), 
+                                  HashString ExpectedHash, 
+                                  vector<DiffInfo> diffs)
+   : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash), 

      available_patches(diffs)
 {
    
      available_patches(diffs)
 {
    


@@ -355,7 +388,7 @@ pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
 
    Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
 
 
    Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
 

-   Desc.Description = URIDesc;
+   Description = URIDesc;

    Desc.Owner = this;
    Desc.ShortDesc = ShortDesc;
 
    Desc.Owner = this;
    Desc.ShortDesc = ShortDesc;
 


@@ -371,20 +404,18 @@ pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
       QueueNextDiff();
    }
 }
       QueueNextDiff();
    }
 }

-
-
-void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
+                                                                       /*}}}*/
+void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf)    /*{{{*/

 {
    if(Debug)
       std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << std::endl
                << "Falling back to normal index file aquire" << std::endl;
    new pkgAcqIndex(Owner, RealURI, Description,Desc.ShortDesc, 
 {
    if(Debug)
       std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << std::endl
                << "Falling back to normal index file aquire" << std::endl;
    new pkgAcqIndex(Owner, RealURI, Description,Desc.ShortDesc, 

-                  ExpectedMD5);
+                  ExpectedHash);

    Finish();
 }
    Finish();
 }

-
-
-// helper that cleans the item out of the fetcher queue
+                                                                       /*}}}*/
+// Finish - helper that cleans the item out of the fetcher queue       /*{{{*/

 void pkgAcqIndexDiffs::Finish(bool allDone)
 {
    // we restore the original name, this is required, otherwise
 void pkgAcqIndexDiffs::Finish(bool allDone)
 {
    // we restore the original name, this is required, otherwise


@@ -394,14 +425,7 @@ void pkgAcqIndexDiffs::Finish(bool allDone)
       DestFile = _config->FindDir("Dir::State::lists");
       DestFile += URItoFileName(RealURI);
 
       DestFile = _config->FindDir("Dir::State::lists");
       DestFile += URItoFileName(RealURI);
 

-      // do the final md5sum checking
-      MD5Summation sum;
-      FileFd Fd(DestFile, FileFd::ReadOnly);
-      sum.AddFD(Fd.Fd(), Fd.Size());
-      Fd.Close();
-      string MD5 = (string)sum.Result();
-
-      if (!ExpectedMD5.empty() && MD5 != ExpectedMD5)
+      if(!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile))

       {
         Status = StatAuthError;
         ErrorText = _("MD5Sum mismatch");
       {
         Status = StatAuthError;
         ErrorText = _("MD5Sum mismatch");


@@ -426,10 +450,8 @@ void pkgAcqIndexDiffs::Finish(bool allDone)
    Dequeue();
    return;
 }
    Dequeue();
    return;
 }

-
-
-
-bool pkgAcqIndexDiffs::QueueNextDiff()
+                                                                       /*}}}*/
+bool pkgAcqIndexDiffs::QueueNextDiff()                                 /*{{{*/

 {
 
    // calc sha1 of the just patched file
 {
 
    // calc sha1 of the just patched file


@@ -464,8 +486,7 @@ bool pkgAcqIndexDiffs::QueueNextDiff()
 
    // queue the right diff
    Desc.URI = string(RealURI) + ".diff/" + available_patches[0].file + ".gz";
 
    // queue the right diff
    Desc.URI = string(RealURI) + ".diff/" + available_patches[0].file + ".gz";

-   Desc.Description = available_patches[0].file + string(".pdiff");
-
+   Desc.Description = Description + " " + available_patches[0].file + string(".pdiff");

    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(RealURI + ".diff/" + available_patches[0].file);
 
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(RealURI + ".diff/" + available_patches[0].file);
 


@@ -476,10 +497,8 @@ bool pkgAcqIndexDiffs::QueueNextDiff()
 
    return true;
 }
 
    return true;
 }

-
-
-
-void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
+                                                                       /*}}}*/
+void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,  /*{{{*/

                            pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)
                            pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)


@@ -499,6 +518,7 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
 
       string FileName = LookupTag(Message,"Filename");
       State = StateUnzipDiff;
 
       string FileName = LookupTag(Message,"Filename");
       State = StateUnzipDiff;

+      Local = true;

       Desc.URI = "gzip:" + FileName;
       DestFile += ".decomp";
       QueueURI(Desc);
       Desc.URI = "gzip:" + FileName;
       DestFile += ".decomp";
       QueueURI(Desc);


@@ -517,6 +537,7 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
         std::clog << "Sending to rred method: " << FinalFile << std::endl;
 
       State = StateApplyDiff;
         std::clog << "Sending to rred method: " << FinalFile << std::endl;
 
       State = StateApplyDiff;

+      Local = true;

       Desc.URI = "rred:" + FinalFile;
       QueueURI(Desc);
       Mode = "rred";
       Desc.URI = "rred:" + FinalFile;
       QueueURI(Desc);
       Mode = "rred";


@@ -537,26 +558,26 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
                   << DestFile << " -> " << FinalFile << std::endl;
       }
       Rename(DestFile,FinalFile);
                   << DestFile << " -> " << FinalFile << std::endl;
       }
       Rename(DestFile,FinalFile);

+      chmod(FinalFile.c_str(),0644);

 
       // see if there is more to download
       if(available_patches.size() > 0) {
         new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
 
       // see if there is more to download
       if(available_patches.size() > 0) {
         new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,

-                             ExpectedMD5, available_patches);
+                             ExpectedHash, available_patches);

         return Finish();
       } else 
         return Finish(true);
    }
 }
         return Finish();
       } else 
         return Finish(true);
    }
 }

-
-
+                                                                       /*}}}*/

 // AcqIndex::AcqIndex - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* The package file is added to the queue and a second class is 
    instantiated to fetch the revision file */   
 pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
                         string URI,string URIDesc,string ShortDesc,
 // AcqIndex::AcqIndex - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* The package file is added to the queue and a second class is 
    instantiated to fetch the revision file */   
 pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
                         string URI,string URIDesc,string ShortDesc,

-                        string ExpectedMD5, string comprExt)
-   : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5)
+                        HashString ExpectedHash, string comprExt)
+   : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash)

 {
    Decompression = false;
    Erase = false;
 {
    Decompression = false;
    Erase = false;


@@ -567,14 +588,15 @@ pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
    if(comprExt.empty()) 
    {
       // autoselect the compression method
    if(comprExt.empty()) 
    {
       // autoselect the compression method

-      if(FileExists("/usr/bin/bzip2")) 
-        CompressionExtension = ".bz2";
-      else 
-        CompressionExtension = ".gz";
-   } else {
-      CompressionExtension = comprExt;
+      std::vector<std::string> types = APT::Configuration::getCompressionTypes();
+      if (types.empty() == true)
+        comprExt = "plain";
+      else
+        comprExt = "." + types[0];

    }
    }

-   Desc.URI = URI + CompressionExtension; 
+   CompressionExtension = ((comprExt == "plain" || comprExt == ".") ? "" : comprExt);
+
+   Desc.URI = URI + CompressionExtension;

 
    Desc.Description = URIDesc;
    Desc.Owner = this;
 
    Desc.Description = URIDesc;
    Desc.Owner = this;


@@ -598,27 +620,45 @@ string pkgAcqIndex::Custom600Headers()
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }
                                                                        /*}}}*/
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }
                                                                        /*}}}*/

-
-void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
+void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/

 {
 {

-   // no .bz2 found, retry with .gz
-   if(Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1) == "bz2") {
-      Desc.URI = Desc.URI.substr(0,Desc.URI.size()-3) + "gz"; 
+   std::vector<std::string> types = APT::Configuration::getCompressionTypes();
+
+   for (std::vector<std::string>::const_iterator t = types.begin();
+       t != types.end(); t++)
+   {
+      // jump over all already tried compression types
+      const unsigned int nameLen = Desc.URI.size() - (*t).size();
+      if(Desc.URI.substr(nameLen) != *t)
+        continue;

 
 

-      // retry with a gzip one 
-      new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc, 
-                     ExpectedMD5, string(".gz"));
+      // we want to try it with the next extension (and make sure to 
+      // not skip over the end)
+      t++;
+      if (t == types.end())
+        break;
+
+      // queue new download
+      Desc.URI = Desc.URI.substr(0, nameLen) + *t;
+      new pkgAcqIndex(Owner, RealURI, Desc.Description, Desc.ShortDesc,
+      ExpectedHash, string(".").append(*t));
+      

       Status = StatDone;
       Complete = false;
       Dequeue();
       return;
    }
 
       Status = StatDone;
       Complete = false;
       Dequeue();
       return;
    }
 

-   
+   // on decompression failure, remove bad versions in partial/
+   if(Decompression && Erase) {
+      string s = _config->FindDir("Dir::State::lists") + "partial/";
+      s += URItoFileName(RealURI);
+      unlink(s.c_str());
+   }
+

    Item::Failed(Message,Cnf);
 }
    Item::Failed(Message,Cnf);
 }

-
-
+                                                                       /*}}}*/

 // AcqIndex::Done - Finished a fetch                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* This goes through a number of states.. On the initial fetch the
 // AcqIndex::Done - Finished a fetch                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* This goes through a number of states.. On the initial fetch the


@@ -626,32 +666,23 @@ void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
    to the uncompressed version of the file. If this is so the file
    is copied into the partial directory. In all other cases the file
    is decompressed with a gzip uri. */
    to the uncompressed version of the file. If this is so the file
    is copied into the partial directory. In all other cases the file
    is decompressed with a gzip uri. */

-void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5,
+void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash,

                       pkgAcquire::MethodConfig *Cfg)
 {
                       pkgAcquire::MethodConfig *Cfg)
 {

-   Item::Done(Message,Size,MD5,Cfg);
+   Item::Done(Message,Size,Hash,Cfg);

 
    if (Decompression == true)
    {
       if (_config->FindB("Debug::pkgAcquire::Auth", false))
       {
 
    if (Decompression == true)
    {
       if (_config->FindB("Debug::pkgAcquire::Auth", false))
       {

-         std::cerr << std::endl << RealURI << ": Computed MD5: " << MD5;
-         std::cerr << "  Expected MD5: " << ExpectedMD5 << std::endl;
+         std::cerr << std::endl << RealURI << ": Computed Hash: " << Hash;
+         std::cerr << "  Expected Hash: " << ExpectedHash.toStr() << std::endl;

       }
 
       }
 

-      if (MD5.empty())
-      {
-         MD5Summation sum;
-         FileFd Fd(DestFile, FileFd::ReadOnly);
-         sum.AddFD(Fd.Fd(), Fd.Size());
-         Fd.Close();
-         MD5 = (string)sum.Result();
-      }
-
-      if (!ExpectedMD5.empty() && MD5 != ExpectedMD5)
+      if (!ExpectedHash.empty() && ExpectedHash.toStr() != Hash)

       {
          Status = StatAuthError;
       {
          Status = StatAuthError;

-         ErrorText = _("MD5Sum mismatch");
+         ErrorText = _("Hash Sum mismatch");

          Rename(DestFile,DestFile + ".FAILED");
          return;
       }
          Rename(DestFile,DestFile + ".FAILED");
          return;
       }


@@ -682,7 +713,6 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5,
       // The files timestamp matches
       if (StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
         return;
       // The files timestamp matches
       if (StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
         return;

-

       Decompression = true;
       Local = true;
       DestFile += ".decomp";
       Decompression = true;
       Local = true;
       DestFile += ".decomp";


@@ -708,12 +738,19 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5,
    else
       Local = true;
    
    else
       Local = true;
    

-   string compExt = Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1);
-   char *decompProg;
-   if(compExt == "bz2") 
-      decompProg = "bzip2";
-   else if(compExt == ".gz") 
-      decompProg = "gzip";
+   string compExt = flExtension(flNotDir(URI(Desc.URI).Path));
+   string decompProg;
+
+   // get the binary name for your used compression type
+   decompProg = _config->Find(string("Acquire::CompressionTypes::").append(compExt),"");
+   if(decompProg.empty() == false);
+   // flExtensions returns the full name if no extension is found
+   // this is why we have this complicated compare operation here
+   // FIMXE: add a new flJustExtension() that return "" if no
+   //        extension is found and use that above so that it can
+   //        be tested against ""
+   else if(compExt == flNotDir(URI(Desc.URI).Path))
+      decompProg = "copy";

    else {
       _error->Error("Unsupported extension: %s", compExt.c_str());
       return;
    else {
       _error->Error("Unsupported extension: %s", compExt.c_str());
       return;


@@ -721,27 +758,54 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5,
 
    Decompression = true;
    DestFile += ".decomp";
 
    Decompression = true;
    DestFile += ".decomp";

-   Desc.URI = string(decompProg) + ":" + FileName;
+   Desc.URI = decompProg + ":" + FileName;

    QueueURI(Desc);
    QueueURI(Desc);

-   Mode = decompProg;
+   Mode = decompProg.c_str();

 }
 }

-
-pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
+                                                                       /*}}}*/
+// AcqIndexTrans::pkgAcqIndexTrans - Constructor                       /*{{{*/
+// ---------------------------------------------------------------------
+/* The Translation file is added to the queue */
+pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner,
+                           string URI,string URIDesc,string ShortDesc) 
+  : pkgAcqIndex(Owner, URI, URIDesc, ShortDesc, HashString(), "")
+{
+}
+                                                                       /*}}}*/
+// AcqIndexTrans::Failed - Silence failure messages for missing files  /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcqIndexTrans::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
+{
+   if (Cnf->LocalOnly == true || 
+       StringToBool(LookupTag(Message,"Transient-Failure"),false) == false)
+   {      
+      // Ignore this
+      Status = StatDone;
+      Complete = false;
+      Dequeue();
+      return;
+   }
+   
+   Item::Failed(Message,Cnf);
+}
+                                                                       /*}}}*/
+pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,                                /*{{{*/

                             string URI,string URIDesc,string ShortDesc,
                             string MetaIndexURI, string MetaIndexURIDesc,
                             string MetaIndexShortDesc,
                             const vector<IndexTarget*>* IndexTargets,
                             indexRecords* MetaIndexParser) :
    Item(Owner), RealURI(URI), MetaIndexURI(MetaIndexURI),
                             string URI,string URIDesc,string ShortDesc,
                             string MetaIndexURI, string MetaIndexURIDesc,
                             string MetaIndexShortDesc,
                             const vector<IndexTarget*>* IndexTargets,
                             indexRecords* MetaIndexParser) :
    Item(Owner), RealURI(URI), MetaIndexURI(MetaIndexURI),

-   MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc)
+   MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc),
+   MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets)

 {
 {

-   this->MetaIndexParser = MetaIndexParser;
-   this->IndexTargets = IndexTargets;

    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(URI);
 
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(URI);
 

-   // remove any partial downloaded sig-file. it may confuse proxies
-   // and is too small to warrant a partial download anyway
+   // remove any partial downloaded sig-file in partial/. 
+   // it may confuse proxies and is too small to warrant a 
+   // partial download anyway

    unlink(DestFile.c_str());
 
    // Create the item
    unlink(DestFile.c_str());
 
    // Create the item


@@ -749,22 +813,19 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
    Desc.Owner = this;
    Desc.ShortDesc = ShortDesc;
    Desc.URI = URI;
    Desc.Owner = this;
    Desc.ShortDesc = ShortDesc;
    Desc.URI = URI;

-   

       
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
    struct stat Buf;
    if (stat(Final.c_str(),&Buf) == 0)
    {
       
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
    struct stat Buf;
    if (stat(Final.c_str(),&Buf) == 0)
    {

-      // File was already in place.  It needs to be re-verified
-      // because Release might have changed, so Move it into partial
-      Rename(Final,DestFile);
-      // unlink the file and do not try to use I-M-S and Last-Modified
-      // if the users proxy is broken
-      if(_config->FindB("Acquire::BrokenProxy", false) == true) {
-        std::cerr << "forcing re-get of the signature file as requested" << std::endl;
-        unlink(DestFile.c_str());
-      }
+      // File was already in place.  It needs to be re-downloaded/verified
+      // because Release might have changed, we do give it a differnt
+      // name than DestFile because otherwise the http method will
+      // send If-Range requests and there are too many broken servers
+      // out there that do not understand them
+      LastGoodSig = DestFile+".reverify";
+      Rename(Final,LastGoodSig);

    }
 
    QueueURI(Desc);
    }
 
    QueueURI(Desc);


@@ -776,7 +837,7 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
 string pkgAcqMetaSig::Custom600Headers()
 {
    struct stat Buf;
 string pkgAcqMetaSig::Custom600Headers()
 {
    struct stat Buf;

-   if (stat(DestFile.c_str(),&Buf) != 0)
+   if (stat(LastGoodSig.c_str(),&Buf) != 0)

       return "\nIndex-File: true";
 
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
       return "\nIndex-File: true";
 
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);


@@ -806,26 +867,38 @@ void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5,
 
    Complete = true;
 
 
    Complete = true;
 

+   // put the last known good file back on i-m-s hit (it will
+   // be re-verified again)
+   // Else do nothing, we have the new file in DestFile then
+   if(StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
+      Rename(LastGoodSig, DestFile);
+

    // queue a pkgAcqMetaIndex to be verified against the sig we just retrieved
    new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
                       DestFile, IndexTargets, MetaIndexParser);
 
 }
                                                                        /*}}}*/
    // queue a pkgAcqMetaIndex to be verified against the sig we just retrieved
    new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
                       DestFile, IndexTargets, MetaIndexParser);
 
 }
                                                                        /*}}}*/

-void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
+void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)/*{{{*/

 {
 {

-   // Delete any existing sigfile, so that this source isn't
-   // mistakenly trusted

    string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);
    string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);

-   unlink(Final.c_str());

 
 

-   // if we get a timeout if fail
-   if(LookupTag(Message,"FailReason") == "Timeout" || 
-      LookupTag(Message,"FailReason") == "TmpResolveFailure") {
+   // if we get a network error we fail gracefully
+   if(Status == StatTransientNetworkError)
+   {

       Item::Failed(Message,Cnf);
       Item::Failed(Message,Cnf);

+      // move the sigfile back on transient network failures 
+      if(FileExists(DestFile))
+        Rename(LastGoodSig,Final);
+
+      // set the status back to , Item::Failed likes to reset it
+      Status = pkgAcquire::Item::StatTransientNetworkError;

       return;
    }
 
       return;
    }
 

+   // Delete any existing sigfile when the acquire failed
+   unlink(Final.c_str());
+

    // queue a pkgAcqMetaIndex with no sigfile
    new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
                       "", IndexTargets, MetaIndexParser);
    // queue a pkgAcqMetaIndex with no sigfile
    new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
                       "", IndexTargets, MetaIndexParser);


@@ -842,17 +915,15 @@ void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
    
    Item::Failed(Message,Cnf);
 }
    
    Item::Failed(Message,Cnf);
 }

-
-pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,
+                                                                       /*}}}*/
+pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,                    /*{{{*/

                                 string URI,string URIDesc,string ShortDesc,
                                 string SigFile,
                                 const vector<struct IndexTarget*>* IndexTargets,
                                 indexRecords* MetaIndexParser) :
                                 string URI,string URIDesc,string ShortDesc,
                                 string SigFile,
                                 const vector<struct IndexTarget*>* IndexTargets,
                                 indexRecords* MetaIndexParser) :

-  Item(Owner), RealURI(URI), SigFile(SigFile)
+   Item(Owner), RealURI(URI), SigFile(SigFile), IndexTargets(IndexTargets),
+   MetaIndexParser(MetaIndexParser), AuthPass(false), IMSHit(false)

 {
 {

-   this->AuthPass = false;
-   this->MetaIndexParser = MetaIndexParser;
-   this->IndexTargets = IndexTargets;

    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(URI);
 
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(URI);
 


@@ -864,7 +935,6 @@ pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,
 
    QueueURI(Desc);
 }
 
    QueueURI(Desc);
 }

-

                                                                        /*}}}*/
 // pkgAcqMetaIndex::Custom600Headers - Insert custom request headers   /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // pkgAcqMetaIndex::Custom600Headers - Insert custom request headers   /*{{{*/
 // ---------------------------------------------------------------------


@@ -880,11 +950,11 @@ string pkgAcqMetaIndex::Custom600Headers()
    
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }
    
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }

-
-void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string MD5,
+                                                                       /*}}}*/
+void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string Hash,      /*{{{*/

                           pkgAcquire::MethodConfig *Cfg)
 {
                           pkgAcquire::MethodConfig *Cfg)
 {

-   Item::Done(Message,Size,MD5,Cfg);
+   Item::Done(Message,Size,Hash,Cfg);

 
    // MetaIndexes are done in two passes: one to download the
    // metaindex with an appropriate method, and a second to verify it
 
    // MetaIndexes are done in two passes: one to download the
    // metaindex with an appropriate method, and a second to verify it


@@ -922,8 +992,8 @@ void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string MD5,
       }
    }
 }
       }
    }
 }

-
-void pkgAcqMetaIndex::RetrievalDone(string Message)
+                                                                       /*}}}*/
+void pkgAcqMetaIndex::RetrievalDone(string Message)                    /*{{{*/

 {
    // We have just finished downloading a Release file (it is not
    // verified yet)
 {
    // We have just finished downloading a Release file (it is not
    // verified yet)


@@ -944,21 +1014,25 @@ void pkgAcqMetaIndex::RetrievalDone(string Message)
       return;
    }
 
       return;
    }
 

+   // see if the download was a IMSHit
+   IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false);

    Complete = true;
 
    string FinalFile = _config->FindDir("Dir::State::lists");
    FinalFile += URItoFileName(RealURI);
 
    Complete = true;
 
    string FinalFile = _config->FindDir("Dir::State::lists");
    FinalFile += URItoFileName(RealURI);
 

-   // The files timestamp matches
-   if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == false)
-   {
-      // Move it into position
+   // If we get a IMS hit we can remove the empty file in partial
+   // othersie we move the file in place
+   if (IMSHit)
+      unlink(DestFile.c_str());
+   else

       Rename(DestFile,FinalFile);
       Rename(DestFile,FinalFile);

-   }
+
+   chmod(FinalFile.c_str(),0644);

    DestFile = FinalFile;
 }
    DestFile = FinalFile;
 }

-
-void pkgAcqMetaIndex::AuthDone(string Message)
+                                                                       /*}}}*/
+void pkgAcqMetaIndex::AuthDone(string Message)                         /*{{{*/

 {
    // At this point, the gpgv method has succeeded, so there is a
    // valid signature from a key in the trusted keyring.  We
 {
    // At this point, the gpgv method has succeeded, so there is a
    // valid signature from a key in the trusted keyring.  We


@@ -972,7 +1046,7 @@ void pkgAcqMetaIndex::AuthDone(string Message)
       return;
    }
 
       return;
    }
 

-   if (!VerifyVendor())
+   if (!VerifyVendor(Message))

    {
       return;
    }
    {
       return;
    }


@@ -991,14 +1065,14 @@ void pkgAcqMetaIndex::AuthDone(string Message)
    Rename(SigFile,VerifiedSigFile);
    chmod(VerifiedSigFile.c_str(),0644);
 }
    Rename(SigFile,VerifiedSigFile);
    chmod(VerifiedSigFile.c_str(),0644);
 }

-
-void pkgAcqMetaIndex::QueueIndexes(bool verify)
+                                                                       /*}}}*/
+void pkgAcqMetaIndex::QueueIndexes(bool verify)                                /*{{{*/

 {
    for (vector <struct IndexTarget*>::const_iterator Target = IndexTargets->begin();
         Target != IndexTargets->end();
         Target++)
    {
 {
    for (vector <struct IndexTarget*>::const_iterator Target = IndexTargets->begin();
         Target != IndexTargets->end();
         Target++)
    {

-      string ExpectedIndexMD5;
+      HashString ExpectedIndexHash;

       if (verify)
       {
          const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey);
       if (verify)
       {
          const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey);


@@ -1009,16 +1083,16 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)
                + (*Target)->MetaKey + " in Meta-index file (malformed Release file?)";
             return;
          }
                + (*Target)->MetaKey + " in Meta-index file (malformed Release file?)";
             return;
          }

-         ExpectedIndexMD5 = Record->MD5Hash;
+         ExpectedIndexHash = Record->Hash;

          if (_config->FindB("Debug::pkgAcquire::Auth", false))
          {
             std::cerr << "Queueing: " << (*Target)->URI << std::endl;
          if (_config->FindB("Debug::pkgAcquire::Auth", false))
          {
             std::cerr << "Queueing: " << (*Target)->URI << std::endl;

-            std::cerr << "Expected MD5: " << ExpectedIndexMD5 << std::endl;
+            std::cerr << "Expected Hash: " << ExpectedIndexHash.toStr() << std::endl;

          }
          }

-         if (ExpectedIndexMD5.empty())
+         if (ExpectedIndexHash.empty())

          {
             Status = StatAuthError;
          {
             Status = StatAuthError;

-            ErrorText = "Unable to find MD5 sum for "
+            ErrorText = "Unable to find hash sum for "

                + (*Target)->MetaKey + " in Meta-index file";
             return;
          }
                + (*Target)->MetaKey + " in Meta-index file";
             return;
          }


@@ -1026,16 +1100,16 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)
       
       // Queue Packages file (either diff or full packages files, depending
       // on the users option)
       
       // Queue Packages file (either diff or full packages files, depending
       // on the users option)

-      if(_config->FindB("Acquire::PDiffs",false) == false) 
+      if(_config->FindB("Acquire::PDiffs",true) == true) 

         new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description,
         new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description,

-                            (*Target)->ShortDesc, ExpectedIndexMD5);
+                            (*Target)->ShortDesc, ExpectedIndexHash);

       else 
         new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description,
       else 
         new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description,

-                           (*Target)->ShortDesc, ExpectedIndexMD5);
+                           (*Target)->ShortDesc, ExpectedIndexHash);

    }
 }
    }
 }

-
-bool pkgAcqMetaIndex::VerifyVendor()
+                                                                       /*}}}*/
+bool pkgAcqMetaIndex::VerifyVendor(string Message)                     /*{{{*/

 {
 //    // Maybe this should be made available from above so we don't have
 //    // to read and parse it every time?
 {
 //    // Maybe this should be made available from above so we don't have
 //    // to read and parse it every time?


@@ -1060,6 +1134,22 @@ bool pkgAcqMetaIndex::VerifyVendor()
 //          break;
 //       }
 //    }
 //          break;
 //       }
 //    }

+   string::size_type pos;
+
+   // check for missing sigs (that where not fatal because otherwise we had
+   // bombed earlier)
+   string missingkeys;
+   string msg = _("There is no public key available for the "
+                 "following key IDs:\n");
+   pos = Message.find("NO_PUBKEY ");
+   if (pos != std::string::npos)
+   {
+      string::size_type start = pos+strlen("NO_PUBKEY ");
+      string Fingerprint = Message.substr(start, Message.find("\n")-start);
+      missingkeys += (Fingerprint);
+   }
+   if(!missingkeys.empty())
+      _error->Warning("%s", string(msg+missingkeys).c_str());

 
    string Transformed = MetaIndexParser->GetExpectedDist();
 
 
    string Transformed = MetaIndexParser->GetExpectedDist();
 


@@ -1068,7 +1158,7 @@ bool pkgAcqMetaIndex::VerifyVendor()
       Transformed = "experimental";
    }
 
       Transformed = "experimental";
    }
 

-   string::size_type pos = Transformed.rfind('/');
+   pos = Transformed.rfind('/');

    if (pos != string::npos)
    {
       Transformed = Transformed.substr(0, pos);
    if (pos != string::npos)
    {
       Transformed = Transformed.substr(0, pos);


@@ -1105,28 +1195,45 @@ bool pkgAcqMetaIndex::VerifyVendor()
 
    return true;
 }
 
    return true;
 }

-                                                                       /*}}}*/
-// pkgAcqMetaIndex::Failed - no Release file present or no signature
-//      file present                                           /*{{{*/
+                                                                       /*}}}*/
+// pkgAcqMetaIndex::Failed - no Release file present or no signature file present      /*{{{*/

 // ---------------------------------------------------------------------
 /* */
 void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {
    if (AuthPass == true)
    {
 // ---------------------------------------------------------------------
 /* */
 void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {
    if (AuthPass == true)
    {

-      // gpgv method failed
+      // if we fail the authentication but got the file via a IMS-Hit 
+      // this means that the file wasn't downloaded and that it might be
+      // just stale (server problem, proxy etc). we delete what we have
+      // queue it again without i-m-s 
+      // alternatively we could just unlink the file and let the user try again
+      if (IMSHit)
+      {
+        Complete = false;
+        Local = false;
+        AuthPass = false;
+        unlink(DestFile.c_str());
+
+        DestFile = _config->FindDir("Dir::State::lists") + "partial/";
+        DestFile += URItoFileName(RealURI);
+        Desc.URI = RealURI;
+        QueueURI(Desc);
+        return;
+      }
+
+      // gpgv method failed 

       _error->Warning("GPG error: %s: %s",
                       Desc.Description.c_str(),
                       LookupTag(Message,"Message").c_str());
       _error->Warning("GPG error: %s: %s",
                       Desc.Description.c_str(),
                       LookupTag(Message,"Message").c_str());

+

    }
 
    // No Release file was present, or verification failed, so fall
    // back to queueing Packages files without verification
    QueueIndexes(false);
 }
    }
 
    // No Release file was present, or verification failed, so fall
    // back to queueing Packages files without verification
    QueueIndexes(false);
 }

-

                                                                        /*}}}*/
                                                                        /*}}}*/

-

 // AcqArchive::AcqArchive - Constructor                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This just sets up the initial fetch environment and queues the first
 // AcqArchive::AcqArchive - Constructor                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This just sets up the initial fetch environment and queues the first


@@ -1193,6 +1300,12 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources,
       }
    }
 
       }
    }
 

+   // "allow-unauthenticated" restores apts old fetching behaviour
+   // that means that e.g. unauthenticated file:// uris are higher
+   // priority than authenticated http:// uris
+   if (_config->FindB("APT::Get::AllowUnauthenticated",false) == true)
+      Trusted = false;
+

    // Select a source
    if (QueueNext() == false && _error->PendingError() == false)
       _error->Error(_("I wasn't able to locate file for the %s package. "
    // Select a source
    if (QueueNext() == false && _error->PendingError() == false)
       _error->Error(_("I wasn't able to locate file for the %s package. "


@@ -1229,7 +1342,12 @@ bool pkgAcqArchive::QueueNext()
         return false;
       
       string PkgFile = Parse.FileName();
         return false;
       
       string PkgFile = Parse.FileName();

-      MD5 = Parse.MD5Hash();
+      if(Parse.SHA256Hash() != "")
+        ExpectedHash = HashString("SHA256", Parse.SHA256Hash());
+      else if (Parse.SHA1Hash() != "")
+        ExpectedHash = HashString("SHA1", Parse.SHA1Hash());
+      else 
+        ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());

       if (PkgFile.empty() == true)
         return _error->Error(_("The package index files are corrupted. No Filename: "
                              "field for package %s."),
       if (PkgFile.empty() == true)
         return _error->Error(_("The package index files are corrupted. No Filename: "
                              "field for package %s."),


@@ -1309,10 +1427,10 @@ bool pkgAcqArchive::QueueNext()
 // AcqArchive::Done - Finished fetching                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // AcqArchive::Done - Finished fetching                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void pkgAcqArchive::Done(string Message,unsigned long Size,string Md5Hash,
+void pkgAcqArchive::Done(string Message,unsigned long Size,string CalcHash,

                         pkgAcquire::MethodConfig *Cfg)
 {
                         pkgAcquire::MethodConfig *Cfg)
 {

-   Item::Done(Message,Size,Md5Hash,Cfg);
+   Item::Done(Message,Size,CalcHash,Cfg);

    
    // Check the size
    if (Size != Version->Size)
    
    // Check the size
    if (Size != Version->Size)


@@ -1322,17 +1440,14 @@ void pkgAcqArchive::Done(string Message,unsigned long Size,string Md5Hash,
       return;
    }
    
       return;
    }
    

-   // Check the md5
-   if (Md5Hash.empty() == false && MD5.empty() == false)
+   // Check the hash
+   if(ExpectedHash.toStr() != CalcHash)

    {
    {

-      if (Md5Hash != MD5)
-      {
-        Status = StatError;
-        ErrorText = _("MD5Sum mismatch");
-        if(FileExists(DestFile))
-           Rename(DestFile,DestFile + ".FAILED");
-        return;
-      }
+      Status = StatError;
+      ErrorText = _("Hash Sum mismatch");
+      if(FileExists(DestFile))
+        Rename(DestFile,DestFile + ".FAILED");
+      return;

    }
 
    // Grab the output filename
    }
 
    // Grab the output filename


@@ -1401,14 +1516,13 @@ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
    }
 }
                                                                        /*}}}*/
    }
 }
                                                                        /*}}}*/

-// AcqArchive::IsTrusted - Determine whether this archive comes from a
-// trusted source                                                      /*{{{*/
+// AcqArchive::IsTrusted - Determine whether this archive comes from a trusted source /*{{{*/

 // ---------------------------------------------------------------------
 bool pkgAcqArchive::IsTrusted()
 {
    return Trusted;
 }
 // ---------------------------------------------------------------------
 bool pkgAcqArchive::IsTrusted()
 {
    return Trusted;
 }

-
+                                                                       /*}}}*/

 // AcqArchive::Finished - Fetching has finished, tidy up               /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // AcqArchive::Finished - Fetching has finished, tidy up               /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -1420,18 +1534,23 @@ void pkgAcqArchive::Finished()
    StoreFilename = string();
 }
                                                                        /*}}}*/
    StoreFilename = string();
 }
                                                                        /*}}}*/

-

 // AcqFile::pkgAcqFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* The file is added to the queue */
 // AcqFile::pkgAcqFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* The file is added to the queue */

-pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string MD5,
-                      unsigned long Size,string Dsc,string ShortDesc) :
-                       Item(Owner), Md5Hash(MD5)
+pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash,
+                      unsigned long Size,string Dsc,string ShortDesc,
+                      const string &DestDir, const string &DestFilename) :
+                       Item(Owner), ExpectedHash(Hash)

 {
    Retries = _config->FindI("Acquire::Retries",0);
    
 {
    Retries = _config->FindI("Acquire::Retries",0);
    

-   DestFile = flNotDir(URI);
-   
+   if(!DestFilename.empty())
+      DestFile = DestFilename;
+   else if(!DestDir.empty())
+      DestFile = DestDir + "/" + flNotDir(URI);
+   else
+      DestFile = flNotDir(URI);
+

    // Create the item
    Desc.URI = URI;
    Desc.Description = Dsc;
    // Create the item
    Desc.URI = URI;
    Desc.Description = Dsc;


@@ -1451,30 +1570,27 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string MD5,
       else
         PartialSize = Buf.st_size;
    }
       else
         PartialSize = Buf.st_size;
    }

-   
+

    QueueURI(Desc);
 }
                                                                        /*}}}*/
 // AcqFile::Done - Item downloaded OK                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* */
    QueueURI(Desc);
 }
                                                                        /*}}}*/
 // AcqFile::Done - Item downloaded OK                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void pkgAcqFile::Done(string Message,unsigned long Size,string MD5,
+void pkgAcqFile::Done(string Message,unsigned long Size,string CalcHash,

                      pkgAcquire::MethodConfig *Cnf)
 {
                      pkgAcquire::MethodConfig *Cnf)
 {

-   // Check the md5
-   if (Md5Hash.empty() == false && MD5.empty() == false)
+   Item::Done(Message,Size,CalcHash,Cnf);
+
+   // Check the hash
+   if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash)

    {
    {

-      if (Md5Hash != MD5)
-      {
-        Status = StatError;
-        ErrorText = "MD5Sum mismatch";
-        Rename(DestFile,DestFile + ".FAILED");
-        return;
-      }
+      Status = StatError;
+      ErrorText = "Hash Sum mismatch";
+      Rename(DestFile,DestFile + ".FAILED");
+      return;

    }
    
    }
    

-   Item::Done(Message,Size,MD5,Cnf);
-

    string FileName = LookupTag(Message,"Filename");
    if (FileName.empty() == true)
    {
    string FileName = LookupTag(Message,"Filename");
    if (FileName.empty() == true)
    {