Advanced documentation for 'apt-get install' command, mentioned upgrading possibility.

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

diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index acf908ece9c5c123d81389dc6e031caf7a73efcc..ae8ff220594e311bc0909f9a8f50a7cfb5c4e48a 100644 (file)
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -13,9 +13,6 @@
    ##################################################################### */
                                                                        /*}}}*/
 // 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/sourcelist.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/sourcelist.h>


@@ -98,7 +95,7 @@ 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..
                            pkgAcquire::MethodConfig *Cnf)
 {
    // We just downloaded something..


@@ -145,8 +142,9 @@ 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);


@@ -270,26 +268,27 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)
         }
       }
 
         }
       }
 

-      // 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 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;
 }
 


@@ -300,7 +299,7 @@ void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
                << "Falling back to normal index file aquire" << std::endl;
 
    new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc, 
                << "Falling back to normal index file aquire" << std::endl;
 
    new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc, 

-                  ExpectedMD5);
+                  ExpectedHash);

 
    Complete = false;
    Status = StatDone;
 
    Complete = false;
    Status = StatDone;


@@ -346,8 +345,9 @@ void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash,
  */
 pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
                                   string URI,string URIDesc,string ShortDesc,
  */
 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)
 {
    


@@ -356,7 +356,7 @@ 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;
 


@@ -380,7 +380,7 @@ void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
       std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << std::endl
                << "Falling back to normal index file aquire" << std::endl;
    new pkgAcqIndex(Owner, RealURI, Description,Desc.ShortDesc, 
       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();
 }
 


@@ -395,14 +395,7 @@ 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");


@@ -465,8 +458,7 @@ 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);
 


@@ -545,7 +537,7 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
       // 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);


@@ -559,8 +551,8 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
    instantiated to fetch the revision file */   
 pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
                         string URI,string URIDesc,string ShortDesc,
    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;


@@ -576,9 +568,9 @@ pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
       else 
         CompressionExtension = ".gz";
    } else {
       else 
         CompressionExtension = ".gz";
    } else {

-      CompressionExtension = comprExt;
+      CompressionExtension = (comprExt == "plain" ? "" : comprExt);

    }
    }

-   Desc.URI = URI + CompressionExtension; 
+   Desc.URI = URI + CompressionExtension;

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


@@ -605,20 +597,37 @@ string pkgAcqIndex::Custom600Headers()
 
 void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {
 
 void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {

+   bool descChanged = false;

    // no .bz2 found, retry with .gz
    if(Desc.URI.substr(Desc.URI.size()-3) == "bz2") {
    // no .bz2 found, retry with .gz
    if(Desc.URI.substr(Desc.URI.size()-3) == "bz2") {

-      Desc.URI = Desc.URI.substr(0,Desc.URI.size()-3) + "gz"; 
+      Desc.URI = Desc.URI.substr(0,Desc.URI.size()-3) + "gz";

 
 

-      // retry with a gzip one 
-      new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc, 
-                     ExpectedMD5, string(".gz"));
+      new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc,
+                     ExpectedHash, string(".gz"));
+         descChanged = true;
+   }
+   // no .gz found, retry with uncompressed
+   else if(Desc.URI.substr(Desc.URI.size()-2) == "gz") {
+      Desc.URI = Desc.URI.substr(0,Desc.URI.size()-2);
+
+      new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc,
+                     ExpectedHash, string("plain"));
+         descChanged = true;
+   }
+   if (descChanged) {

       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);
 }
 


@@ -630,32 +639,23 @@ 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;
       }


@@ -686,7 +686,6 @@ 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";


@@ -712,12 +711,15 @@ 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);
-   char *decompProg;
+   string compExt = flExtension(flNotDir(URI(Desc.URI).Path));
+   const char *decompProg;

    if(compExt == "bz2") 
       decompProg = "bzip2";
    if(compExt == "bz2") 
       decompProg = "bzip2";

-   else if(compExt == ".gz") 
+   else if(compExt == "gz") 

       decompProg = "gzip";
       decompProg = "gzip";

+   // flExtensions returns the full name if no extension is found
+   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;


@@ -730,6 +732,35 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string MD5,
    Mode = decompProg;
 }
 
    Mode = decompProg;
 }
 

+// 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,
 pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
                             string URI,string URIDesc,string ShortDesc,
                             string MetaIndexURI, string MetaIndexURIDesc,


@@ -743,8 +774,9 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
    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


@@ -752,16 +784,19 @@ 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);
+      // 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);


@@ -773,7 +808,7 @@ 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);


@@ -803,6 +838,12 @@ 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);


@@ -811,17 +852,22 @@ void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5,
                                                                        /*}}}*/
 void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {
                                                                        /*}}}*/
 void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {

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

 
    // if we get a network error we fail gracefully
 
    // if we get a network error we fail gracefully

-   if(LookupTag(Message,"FailReason") == "Timeout" || 
-      LookupTag(Message,"FailReason") == "TmpResolveFailure" ||
-      LookupTag(Message,"FailReason") == "ConnectionRefused") {
+   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;
    }
 
    // Delete any existing sigfile when the acquire failed
       return;
    }
 
    // Delete any existing sigfile when the acquire failed

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

    unlink(Final.c_str());
 
    // queue a pkgAcqMetaIndex with no sigfile
    unlink(Final.c_str());
 
    // queue a pkgAcqMetaIndex with no sigfile


@@ -846,8 +892,8 @@ pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,
                                 string SigFile,
                                 const vector<struct IndexTarget*>* IndexTargets,
                                 indexRecords* MetaIndexParser) :
                                 string SigFile,
                                 const vector<struct IndexTarget*>* IndexTargets,
                                 indexRecords* MetaIndexParser) :

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

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


@@ -877,10 +923,10 @@ 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


@@ -942,18 +988,18 @@ void pkgAcqMetaIndex::RetrievalDone(string Message)
 
    // see if the download was a IMSHit
    IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false);
 
    // 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;
 }
    chmod(FinalFile.c_str(),0644);
    DestFile = FinalFile;
 }


@@ -998,7 +1044,7 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)
         Target != IndexTargets->end();
         Target++)
    {
         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 +1055,16 @@ 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;
          }


@@ -1028,10 +1074,10 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)
       // on the users option)
       if(_config->FindB("Acquire::PDiffs",true) == true) 
         new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description,
       // on the users option)
       if(_config->FindB("Acquire::PDiffs",true) == true) 
         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);

    }
 }
 
    }
 }
 


@@ -1065,7 +1111,7 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message)
    // check for missing sigs (that where not fatal because otherwise we had
    // bombed earlier)
    string missingkeys;
    // check for missing sigs (that where not fatal because otherwise we had
    // bombed earlier)
    string missingkeys;

-   string msg = _("There are no public key available for the "
+   string msg = _("There is no public key available for the "

                  "following key IDs:\n");
    pos = Message.find("NO_PUBKEY ");
    if (pos != std::string::npos)
                  "following key IDs:\n");
    pos = Message.find("NO_PUBKEY ");
    if (pos != std::string::npos)


@@ -1271,7 +1317,12 @@ 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."),


@@ -1351,10 +1402,10 @@ 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)


@@ -1364,17 +1415,14 @@ 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


@@ -1466,10 +1514,10 @@ void pkgAcqArchive::Finished()
 // 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,
+pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash,

                       unsigned long Size,string Dsc,string ShortDesc,
                       const string &DestDir, const string &DestFilename) :
                       unsigned long Size,string Dsc,string ShortDesc,
                       const string &DestDir, const string &DestFilename) :

-                       Item(Owner), Md5Hash(MD5)
+                       Item(Owner), ExpectedHash(Hash)

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


@@ -1506,23 +1554,20 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string MD5,
 // AcqFile::Done - Item downloaded OK                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // 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)
    {