]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/acquire-item.cc
add pkgAcquire::TransactionHasError()
[apt.git] / apt-pkg / acquire-item.cc
index 4d9f5cd00ca5a8adabca436a1fc3b07f1569c36e..81afdf4b17f3b53b8506812048ba2ec25bdc9679 100644 (file)
 
 using namespace std;
 
+static void printHashSumComparision(std::string const &URI, HashStringList const &Expected, HashStringList const &Actual) /*{{{*/
+{
+   if (_config->FindB("Debug::Acquire::HashSumMismatch", false) == false)
+      return;
+   std::cerr << std::endl << URI << ":" << std::endl << " Expected Hash: " << std::endl;
+   for (HashStringList::const_iterator hs = Expected.begin(); hs != Expected.end(); ++hs)
+      std::cerr <<  "\t- " << hs->toStr() << std::endl;
+   std::cerr << " Actual Hash: " << std::endl;
+   for (HashStringList::const_iterator hs = Actual.begin(); hs != Actual.end(); ++hs)
+      std::cerr <<  "\t- " << hs->toStr() << std::endl;
+}
+                                                                       /*}}}*/
+
 // Acquire::Item::Item - Constructor                                   /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), FileSize(0),
-                       PartialSize(0), Mode(0), ID(0), Complete(false), 
-                       Local(false), QueueCounter(0), 
-                       ExpectedAdditionalItems(0)
+pkgAcquire::Item::Item(pkgAcquire *Owner, HashStringList const &ExpectedHashes) :
+   Owner(Owner), FileSize(0), PartialSize(0), Mode(0), ID(0), Complete(false),
+   Local(false), QueueCounter(0), TransactionID(0), ExpectedAdditionalItems(0),
+   ExpectedHashes(ExpectedHashes)
 {
    Owner->Add(this);
    Status = StatIdle;
@@ -118,7 +129,7 @@ void pkgAcquire::Item::Start(string /*Message*/,unsigned long long Size)
 // Acquire::Item::Done - Item downloaded OK                            /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void pkgAcquire::Item::Done(string Message,unsigned long long Size,string /*Hash*/,
+void pkgAcquire::Item::Done(string Message,unsigned long long Size,HashStringList const &/*Hash*/,
                            pkgAcquire::MethodConfig * /*Cnf*/)
 {
    // We just downloaded something..
@@ -229,8 +240,8 @@ void pkgAcquire::Item::ReportMirrorFailure(string FailCode)
    possibly query additional files */
 pkgAcqSubIndex::pkgAcqSubIndex(pkgAcquire *Owner, string const &URI,
                                 string const &URIDesc, string const &ShortDesc,
-                                HashString const &ExpectedHash)
-   : Item(Owner), ExpectedHash(ExpectedHash)
+                                HashStringList const &ExpectedHashes)
+   : Item(Owner, ExpectedHashes)
 {
    /* XXX: Beware: Currently this class does nothing (of value) anymore ! */
    Debug = _config->FindB("Debug::pkgAcquire::SubIndex",false);
@@ -252,7 +263,7 @@ pkgAcqSubIndex::pkgAcqSubIndex(pkgAcquire *Owner, string const &URI,
 // AcqSubIndex::Custom600Headers - Insert custom request headers       /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
-string pkgAcqSubIndex::Custom600Headers()
+string pkgAcqSubIndex::Custom600Headers() const
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(Desc.URI);
@@ -275,7 +286,7 @@ void pkgAcqSubIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)/*
    // No good Index is provided
 }
                                                                        /*}}}*/
-void pkgAcqSubIndex::Done(string Message,unsigned long long Size,string Md5Hash,       /*{{{*/
+void pkgAcqSubIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/
                           pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)
@@ -297,7 +308,7 @@ void pkgAcqSubIndex::Done(string Message,unsigned long long Size,string Md5Hash,
       return;
    }
 
-   Item::Done(Message,Size,Md5Hash,Cnf);
+   Item::Done(Message, Size, Hashes, Cnf);
 
    string FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(Desc.URI);
 
@@ -342,13 +353,12 @@ bool pkgAcqSubIndex::ParseIndex(string const &IndexFile)          /*{{{*/
  * patches. If anything goes wrong in that process, it will fall back to
  * the original packages file
  */
-pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner,
-                                 IndexTarget const *Target,
-                                HashString ExpectedHash,
+pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcqMetaIndex *MetaOwner,
+                                 IndexTarget const * const Target,
+                                HashStringList const &ExpectedHashes,
                                  indexRecords *MetaIndexParser)
-   : Item(Owner), ExpectedHash(ExpectedHash), Target(Target),
-     MetaIndexParser(MetaIndexParser)
-     
+   : pkgAcqBaseIndex(MetaOwner, Target, ExpectedHashes, 
+                     MetaIndexParser)
 {
    
    Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
@@ -393,7 +403,7 @@ pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner,
 // AcqIndex::Custom600Headers - Insert custom request headers          /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
-string pkgAcqDiffIndex::Custom600Headers()
+string pkgAcqDiffIndex::Custom600Headers() const
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI) + string(".IndexDiff");
@@ -446,7 +456,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)          /*{{{*/
            std::clog << "Package file is up-to-date" << std::endl;
         // list cleanup needs to know that this file as well as the already
         // present index is ours, so we create an empty diff to save it for us
-        new pkgAcqIndexDiffs(Owner, Target, ExpectedHash, MetaIndexParser, 
+        new pkgAcqIndexDiffs(MetaOwner, Target, ExpectedHashes, MetaIndexParser, 
                               ServerSha1, available_patches);
         return true;
       }
@@ -533,15 +543,15 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)                /*{{{*/
 
         if (pdiff_merge == false)
          {
-           new pkgAcqIndexDiffs(Owner, Target, ExpectedHash, MetaIndexParser,
+           new pkgAcqIndexDiffs(MetaOwner, Target, ExpectedHashes, MetaIndexParser,
                                  ServerSha1, available_patches);
          }
          else
         {
            std::vector<pkgAcqIndexMergeDiffs*> *diffs = new std::vector<pkgAcqIndexMergeDiffs*>(available_patches.size());
            for(size_t i = 0; i < available_patches.size(); ++i)
-              (*diffs)[i] = new pkgAcqIndexMergeDiffs(Owner, Target,
-                                                       ExpectedHash,
+              (*diffs)[i] = new pkgAcqIndexMergeDiffs(MetaOwner, Target,
+                                                       ExpectedHashes,
                                                        MetaIndexParser,
                                                        available_patches[i],
                                                        diffs);
@@ -568,20 +578,20 @@ void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)/
       std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << " with " << Message << std::endl
                << "Falling back to normal index file acquire" << std::endl;
 
-   new pkgAcqIndex(Owner, Target, ExpectedHash, MetaIndexParser);
+   new pkgAcqIndex(MetaOwner, Target, ExpectedHashes, MetaIndexParser);
 
    Complete = false;
    Status = StatDone;
    Dequeue();
 }
                                                                        /*}}}*/
-void pkgAcqDiffIndex::Done(string Message,unsigned long long Size,string Md5Hash,      /*{{{*/
+void pkgAcqDiffIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes,        /*{{{*/
                           pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)
       std::clog << "pkgAcqDiffIndex::Done(): " << Desc.URI << std::endl;
 
-   Item::Done(Message,Size,Md5Hash,Cnf);
+   Item::Done(Message, Size, Hashes, Cnf);
 
    string FinalFile;
    FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI);
@@ -610,15 +620,14 @@ void pkgAcqDiffIndex::Done(string Message,unsigned long long Size,string Md5Hash
 /* The package diff is added to the queue. one object is constructed
  * for each diff and the index
  */
-pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
+pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcqMetaIndex *MetaOwner,
                                    struct IndexTarget const * const Target,
-                                   HashString ExpectedHash,
+                                   HashStringList const &ExpectedHashes,
                                    indexRecords *MetaIndexParser,
                                   string ServerSha1,
                                   vector<DiffInfo> diffs)
-   : Item(Owner), ExpectedHash(ExpectedHash),
-     available_patches(diffs), ServerSha1(ServerSha1), 
-     Target(Target), MetaIndexParser(MetaIndexParser)
+   : pkgAcqBaseIndex(MetaOwner, Target, ExpectedHashes, MetaIndexParser),
+     available_patches(diffs), ServerSha1(ServerSha1)
 {
    
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
@@ -649,7 +658,7 @@ void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)
    if(Debug)
       std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << " with " << Message << std::endl
                << "Falling back to normal index file acquire" << std::endl;
-   new pkgAcqIndex(Owner, Target, ExpectedHash, MetaIndexParser);
+   new pkgAcqIndex(MetaOwner, Target, ExpectedHashes, MetaIndexParser);
    Finish();
 }
                                                                        /*}}}*/
@@ -663,7 +672,7 @@ void pkgAcqIndexDiffs::Finish(bool allDone)
       DestFile = _config->FindDir("Dir::State::lists");
       DestFile += URItoFileName(RealURI);
 
-      if(!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile))
+      if(HashSums().usable() && !HashSums().VerifyFile(DestFile))
       {
         RenameOnError(HashSumMismatch);
         Dequeue();
@@ -741,13 +750,13 @@ bool pkgAcqIndexDiffs::QueueNextDiff()                                    /*{{{*/
    return true;
 }
                                                                        /*}}}*/
-void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size,string Md5Hash,     /*{{{*/
+void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size, HashStringList const &Hashes,      /*{{{*/
                            pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)
       std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl;
 
-   Item::Done(Message,Size,Md5Hash,Cnf);
+   Item::Done(Message, Size, Hashes, Cnf);
 
    string FinalFile;
    FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI);
@@ -789,8 +798,8 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size,string Md5Has
 
       // see if there is more to download
       if(available_patches.empty() == false) {
-        new pkgAcqIndexDiffs(Owner, Target,
-                             ExpectedHash, MetaIndexParser,
+        new pkgAcqIndexDiffs(MetaOwner, Target,
+                             ExpectedHashes, MetaIndexParser,
                               ServerSha1, available_patches);
         return Finish();
       } else 
@@ -799,15 +808,14 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size,string Md5Has
 }
                                                                        /*}}}*/
 // AcqIndexMergeDiffs::AcqIndexMergeDiffs - Constructor                        /*{{{*/
-pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire *Owner,
+pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcqMetaIndex *MetaOwner,
                                              struct IndexTarget const * const Target,
-                                             HashString ExpectedHash,
+                                             HashStringList const &ExpectedHashes,
                                              indexRecords *MetaIndexParser,
                                              DiffInfo const &patch,
                                              std::vector<pkgAcqIndexMergeDiffs*> const * const allPatches)
-   : Item(Owner), ExpectedHash(ExpectedHash), patch(patch),
-     allPatches(allPatches), State(StateFetchDiff), 
-     Target(Target), MetaIndexParser(MetaIndexParser)
+   : pkgAcqBaseIndex(MetaOwner, Target, ExpectedHashes, MetaIndexParser),
+     patch(patch), allPatches(allPatches), State(StateFetchDiff)
 {
 
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
@@ -849,16 +857,16 @@ void pkgAcqIndexMergeDiffs::Failed(string Message,pkgAcquire::MethodConfig * /*C
    // first failure means we should fallback
    State = StateErrorDiff;
    std::clog << "Falling back to normal index file acquire" << std::endl;
-   new pkgAcqIndex(Owner, Target, ExpectedHash, MetaIndexParser);
+   new pkgAcqIndex(MetaOwner, Target, ExpectedHashes, MetaIndexParser);
 }
                                                                        /*}}}*/
-void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,string Md5Hash,        /*{{{*/
+void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,HashStringList const &Hashes,  /*{{{*/
                            pkgAcquire::MethodConfig *Cnf)
 {
    if(Debug)
       std::clog << "pkgAcqIndexMergeDiffs::Done(): " << Desc.URI << std::endl;
 
-   Item::Done(Message,Size,Md5Hash,Cnf);
+   Item::Done(Message,Size,Hashes,Cnf);
 
    string const FinalFile = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);
 
@@ -894,7 +902,7 @@ void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,string M
    else if (State == StateApplyDiff)
    {
       // see if we really got the expected file
-      if(!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile))
+      if(ExpectedHashes.usable() && !ExpectedHashes.VerifyFile(DestFile))
       {
         RenameOnError(HashSumMismatch);
         return;
@@ -931,9 +939,8 @@ void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,string M
    instantiated to fetch the revision file */   
 pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
                         string URI,string URIDesc,string ShortDesc,
-                        HashString ExpectedHash, string comprExt)
-   : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash), Target(0),
-     MetaIndexParser(0)
+                        HashStringList const  &ExpectedHash, string comprExt)
+   : pkgAcqBaseIndex(Owner, NULL, ExpectedHash, NULL), RealURI(URI)
 {
    if(comprExt.empty() == true)
    {
@@ -946,18 +953,40 @@ pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
    }
    CompressionExtension = comprExt;
 
-   Verify = true;
-
    Init(URI, URIDesc, ShortDesc);
 }
+#if 0
 pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, IndexTarget const *Target,
-                        HashString const &ExpectedHash, indexRecords *MetaIndexParser)
-   : Item(Owner), RealURI(Target->URI), ExpectedHash(ExpectedHash)
+                        HashStringList const &ExpectedHash, 
+                         indexRecords *MetaIndexParser)
+   : pkgAcqBaseIndex(Owner, Target, ExpectedHash, MetaIndexParser), 
+     RealURI(Target->URI)
+{
+   // autoselect the compression method
+   AutoSelectCompression();
+   Init(Target->URI, Target->Description, Target->ShortDesc);
+}
+#endif
+                                                                       /*}}}*/
+pkgAcqIndex::pkgAcqIndex(pkgAcqMetaIndex *MetaOwner,
+                         IndexTarget const *Target,
+                        HashStringList const &ExpectedHash, 
+                         indexRecords *MetaIndexParser)
+   : pkgAcqBaseIndex(MetaOwner->GetOwner(), Target, ExpectedHash, 
+                     MetaIndexParser), RealURI(Target->URI)
 {
    // autoselect the compression method
+   AutoSelectCompression();
+   Init(Target->URI, Target->Description, Target->ShortDesc);
+
+   TransactionID = (unsigned long)MetaOwner;
+}
+                                                                       /*}}}*/
+void pkgAcqIndex::AutoSelectCompression()
+{
    std::vector<std::string> types = APT::Configuration::getCompressionTypes();
    CompressionExtension = "";
-   if (ExpectedHash.empty() == false)
+   if (ExpectedHashes.usable())
    {
       for (std::vector<std::string>::const_iterator t = types.begin(); t != types.end(); ++t)
         if (*t == "uncompressed" || MetaIndexParser->Exists(string(Target->MetaKey).append(".").append(*t)) == true)
@@ -970,21 +999,7 @@ pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, IndexTarget const *Target,
    }
    if (CompressionExtension.empty() == false)
       CompressionExtension.erase(CompressionExtension.end()-1);
-
-   // only verify non-optional targets, see acquire-item.h for a FIXME
-   // to make this more flexible
-   if (Target->IsOptional())
-     Verify = false;
-   else
-     Verify = true;
-
-   // we need this in Init()
-   this->Target = Target;
-   this->MetaIndexParser = MetaIndexParser;
-
-   Init(Target->URI, Target->Description, Target->ShortDesc);
 }
-                                                                       /*}}}*/
 // AcqIndex::Init - defered Constructor                                        /*{{{*/
 void pkgAcqIndex::Init(string const &URI, string const &URIDesc, string const &ShortDesc) {
    Decompression = false;
@@ -1014,6 +1029,8 @@ void pkgAcqIndex::Init(string const &URI, string const &URIDesc, string const &S
       indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey);
       if(Record)
          FileSize = Record->Size;
+      
+      InitByHashIfNeeded(MetaKey);
    }
 
    Desc.Description = URIDesc;
@@ -1023,10 +1040,42 @@ void pkgAcqIndex::Init(string const &URI, string const &URIDesc, string const &S
    QueueURI(Desc);
 }
                                                                        /*}}}*/
+// AcqIndex::AdjustForByHash - modify URI for by-hash support          /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcqIndex::InitByHashIfNeeded(const std::string MetaKey)
+{
+   // TODO:
+   //  - (maybe?) add support for by-hash into the sources.list as flag
+   //  - make apt-ftparchive generate the hashes (and expire?)
+   std::string HostKnob = "APT::Acquire::" + ::URI(Desc.URI).Host + "::By-Hash";
+   if(_config->FindB("APT::Acquire::By-Hash", false) == true ||
+      _config->FindB(HostKnob, false) == true ||
+      MetaIndexParser->GetSupportsAcquireByHash())
+   {
+      indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey);
+      if(Record)
+      {
+         // FIXME: should we really use the best hash here? or a fixed one?
+         const HashString *TargetHash = Record->Hashes.find("");
+         std::string ByHash = "/by-hash/" + TargetHash->HashType() + "/" + TargetHash->HashValue();
+         size_t trailing_slash = Desc.URI.find_last_of("/");
+         Desc.URI = Desc.URI.replace(
+            trailing_slash,
+            Desc.URI.substr(trailing_slash+1).size()+1,
+            ByHash);
+      } else {
+         _error->Warning(
+            "Fetching ByHash requested but can not find record for %s",
+            MetaKey.c_str());
+      }
+   }
+}
+                                                                       /*}}}*/
 // AcqIndex::Custom600Headers - Insert custom request headers          /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
-string pkgAcqIndex::Custom600Headers()
+string pkgAcqIndex::Custom600Headers() const
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
@@ -1063,6 +1112,9 @@ void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)    /*{{{*/
    }
 
    Item::Failed(Message,Cnf);
+
+   /// cancel the entire transaction
+   Owner->AbortTransaction(TransactionID);
 }
                                                                        /*}}}*/
 // AcqIndex::Done - Finished a fetch                                   /*{{{*/
@@ -1072,51 +1124,50 @@ 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. */
-void pkgAcqIndex::Done(string Message,unsigned long long Size,string Hash,
+void pkgAcqIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes,
                       pkgAcquire::MethodConfig *Cfg)
 {
-   Item::Done(Message,Size,Hash,Cfg);
+   Item::Done(Message,Size,Hashes,Cfg);
 
    if (Decompression == true)
    {
-      if (_config->FindB("Debug::pkgAcquire::Auth", false))
-      {
-         std::cerr << std::endl << RealURI << ": Computed Hash: " << Hash;
-         std::cerr << "  Expected Hash: " << ExpectedHash.toStr() << std::endl;
-      }
-
-      if (!ExpectedHash.empty() && ExpectedHash.toStr() != Hash)
+      if (ExpectedHashes.usable() && ExpectedHashes != Hashes)
       {
         RenameOnError(HashSumMismatch);
+        printHashSumComparision(RealURI, ExpectedHashes, Hashes);
+         Failed(Message, Cfg);
          return;
       }
 
-      /* Verify the index file for correctness (all indexes must
-       * have a Package field) (LP: #346386) (Closes: #627642) */
-      if (Verify == true)
+      // FIXME: this can go away once we only ever download stuff that
+      //        has a valid hash and we never do GET based probing
+      //
+      /* Always verify the index file for correctness (all indexes must
+       * have a Package field) (LP: #346386) (Closes: #627642) 
+       */
+      FileFd fd(DestFile, FileFd::ReadOnly);
+      // Only test for correctness if the file is not empty (empty is ok)
+      if (fd.FileSize() > 0)
       {
-        FileFd fd(DestFile, FileFd::ReadOnly);
-        // Only test for correctness if the file is not empty (empty is ok)
-        if (fd.FileSize() > 0)
-        {
-           pkgTagSection sec;
-           pkgTagFile tag(&fd);
-
-           // all our current indexes have a field 'Package' in each section
-           if (_error->PendingError() == true || tag.Step(sec) == false || sec.Exists("Package") == false)
-           {
-              RenameOnError(InvalidFormat);
-              return;
-           }
+         pkgTagSection sec;
+         pkgTagFile tag(&fd);
+         
+         // all our current indexes have a field 'Package' in each section
+         if (_error->PendingError() == true || tag.Step(sec) == false || sec.Exists("Package") == false)
+         {
+            RenameOnError(InvalidFormat);
+            Failed(Message, Cfg);
+            return;
          }
       }
        
-      // Done, move it into position
+      // Done, queue for rename on transaction finished
+      PartialFile = DestFile;
+
       string FinalFile = _config->FindDir("Dir::State::lists");
       FinalFile += URItoFileName(RealURI);
-      Rename(DestFile,FinalFile);
-      chmod(FinalFile.c_str(),0644);
-
+      DestFile = FinalFile;
+#if 0
       /* We restore the original name to DestFile so that the clean operation
          will work OK */
       DestFile = _config->FindDir("Dir::State::lists") + "partial/";
@@ -1125,7 +1176,7 @@ void pkgAcqIndex::Done(string Message,unsigned long long Size,string Hash,
       // Remove the compressed version.
       if (Erase == true)
         unlink(DestFile.c_str());
-
+#endif
       return;
    }
 
@@ -1209,12 +1260,13 @@ void pkgAcqIndex::Done(string Message,unsigned long long Size,string Hash,
 /* The Translation file is added to the queue */
 pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner,
                            string URI,string URIDesc,string ShortDesc) 
-  : pkgAcqIndex(Owner, URI, URIDesc, ShortDesc, HashString(), "")
+  : pkgAcqIndex(Owner, URI, URIDesc, ShortDesc, HashStringList(), "")
 {
 }
-pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner, IndexTarget const *Target,
-                        HashString const &ExpectedHash, indexRecords *MetaIndexParser)
-  : pkgAcqIndex(Owner, Target, ExpectedHash, MetaIndexParser)
+                                                                       /*}}}*/
+pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcqMetaIndex *MetaOwner, IndexTarget const * const Target,
+                        HashStringList const &ExpectedHashes, indexRecords *MetaIndexParser)
+  : pkgAcqIndex(MetaOwner, Target, ExpectedHashes, MetaIndexParser)
 {
    // load the filesize
    indexRecords::checkSum *Record = MetaIndexParser->Lookup(string(Target->MetaKey));
@@ -1224,7 +1276,7 @@ pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner, IndexTarget const *Target,
                                                                        /*}}}*/
 // AcqIndexTrans::Custom600Headers - Insert custom request headers     /*{{{*/
 // ---------------------------------------------------------------------
-string pkgAcqIndexTrans::Custom600Headers()
+string pkgAcqIndexTrans::Custom600Headers() const
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
@@ -1268,7 +1320,7 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,                           /*{{{*/
                             string MetaIndexShortDesc,
                             const vector<IndexTarget*>* IndexTargets,
                             indexRecords* MetaIndexParser) :
-   Item(Owner), RealURI(URI), MetaIndexURI(MetaIndexURI),
+   Item(Owner, HashStringList()), RealURI(URI), MetaIndexURI(MetaIndexURI),
    MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc),
    MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets)
 {
@@ -1321,7 +1373,7 @@ pkgAcqMetaSig::~pkgAcqMetaSig()                                           /*{{{*/
 // pkgAcqMetaSig::Custom600Headers - Insert custom request headers     /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
-string pkgAcqMetaSig::Custom600Headers()
+string pkgAcqMetaSig::Custom600Headers() const
 {
    struct stat Buf;
    if (stat(LastGoodSig.c_str(),&Buf) != 0)
@@ -1330,10 +1382,10 @@ string pkgAcqMetaSig::Custom600Headers()
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }
 
-void pkgAcqMetaSig::Done(string Message,unsigned long long Size,string MD5,
+void pkgAcqMetaSig::Done(string Message,unsigned long long Size, HashStringList const &Hashes,
                         pkgAcquire::MethodConfig *Cfg)
 {
-   Item::Done(Message,Size,MD5,Cfg);
+   Item::Done(Message, Size, Hashes, Cfg);
 
    string FileName = LookupTag(Message,"Filename");
    if (FileName.empty() == true)
@@ -1363,11 +1415,18 @@ void pkgAcqMetaSig::Done(string Message,unsigned long long Size,string MD5,
    if(StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
       Rename(LastGoodSig, DestFile);
 
+   // queue for copy
+   PartialFile = DestFile;
+   DestFile = _config->FindDir("Dir::State::lists");
+   DestFile += URItoFileName(RealURI);
+
    // queue a pkgAcqMetaIndex to be verified against the sig we just retrieved
-   new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, 
-                      MetaIndexShortDesc,  DestFile, IndexTargets, 
-                      MetaIndexParser);
+   pkgAcqMetaIndex *metaindex = new pkgAcqMetaIndex(
+      Owner, MetaIndexURI, MetaIndexURIDesc, 
+      MetaIndexShortDesc,  DestFile, IndexTargets, 
+      MetaIndexParser);
 
+   TransactionID = (unsigned long)metaindex;
 }
                                                                        /*}}}*/
 void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)/*{{{*/
@@ -1413,14 +1472,16 @@ void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)/*{{{*/
 pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,                    /*{{{*/
                                 string URI,string URIDesc,string ShortDesc,
                                 string SigFile,
-                                const vector<struct IndexTarget*>* IndexTargets,
+                                const vector<IndexTarget*>* IndexTargets,
                                 indexRecords* MetaIndexParser) :
-   Item(Owner), RealURI(URI), SigFile(SigFile), IndexTargets(IndexTargets),
+   Item(Owner, HashStringList()), RealURI(URI), SigFile(SigFile), IndexTargets(IndexTargets),
    MetaIndexParser(MetaIndexParser), AuthPass(false), IMSHit(false)
 {
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(URI);
 
+   TransactionID = (unsigned long)this;
+
    // Create the item
    Desc.Description = URIDesc;
    Desc.Owner = this;
@@ -1436,7 +1497,7 @@ pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,                       /*{{{*/
 // pkgAcqMetaIndex::Custom600Headers - Insert custom request headers   /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
-string pkgAcqMetaIndex::Custom600Headers()
+string pkgAcqMetaIndex::Custom600Headers() const
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
@@ -1448,10 +1509,10 @@ string pkgAcqMetaIndex::Custom600Headers()
    return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
 }
                                                                        /*}}}*/
-void pkgAcqMetaIndex::Done(string Message,unsigned long long Size,string Hash, /*{{{*/
+void pkgAcqMetaIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes,        /*{{{*/
                           pkgAcquire::MethodConfig *Cfg)
 {
-   Item::Done(Message,Size,Hash,Cfg);
+   Item::Done(Message,Size,Hashes,Cfg);
 
    // MetaIndexes are done in two passes: one to download the
    // metaindex with an appropriate method, and a second to verify it
@@ -1511,8 +1572,7 @@ void pkgAcqMetaIndex::Done(string Message,unsigned long long Size,string Hash,    /
       FinalFile += URItoFileName(RealURI);
       if (SigFile == DestFile)
         SigFile = FinalFile;
-      Rename(DestFile,FinalFile);
-      chmod(FinalFile.c_str(),0644);
+      PartialFile = DestFile;
       DestFile = FinalFile;
    }
 }
@@ -1584,6 +1644,7 @@ void pkgAcqMetaIndex::AuthDone(string Message)                            /*{{{*/
    // Download further indexes with verification
    QueueIndexes(true);
 
+#if 0
    // is it a clearsigned MetaIndex file?
    if (DestFile == SigFile)
       return;
@@ -1593,6 +1654,7 @@ void pkgAcqMetaIndex::AuthDone(string Message)                            /*{{{*/
       URItoFileName(RealURI) + ".gpg";
    Rename(SigFile,VerifiedSigFile);
    chmod(VerifiedSigFile.c_str(),0644);
+#endif
 }
                                                                        /*}}}*/
 void pkgAcqMetaIndex::QueueIndexes(bool verify)                                /*{{{*/
@@ -1621,13 +1683,12 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)                         /*{{{*/
 
    // at this point the real Items are loaded in the fetcher
    ExpectedAdditionalItems = 0;
-
-   for (vector <struct IndexTarget*>::const_iterator Target = IndexTargets->begin();
+   for (vector <IndexTarget*>::const_iterator Target = IndexTargets->begin();
         Target != IndexTargets->end();
         ++Target)
    {
-      HashString ExpectedIndexHash;
-      indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey);
+      HashStringList ExpectedIndexHashes;
+      const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey);
       bool compressedAvailable = false;
       if (Record == NULL)
       {
@@ -1650,14 +1711,16 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)                         /*{{{*/
       }
       else
       {
-        ExpectedIndexHash = Record->Hash;
+        ExpectedIndexHashes = Record->Hashes;
         if (_config->FindB("Debug::pkgAcquire::Auth", false))
         {
-           std::cerr << "Queueing: " << (*Target)->URI << std::endl;
-           std::cerr << "Expected Hash: " << ExpectedIndexHash.toStr() << std::endl;
+           std::cerr << "Queueing: " << (*Target)->URI << std::endl
+              << "Expected Hash:" << std::endl;
+           for (HashStringList::const_iterator hs = ExpectedIndexHashes.begin(); hs != ExpectedIndexHashes.end(); ++hs)
+              std::cerr <<  "\t- " << hs->toStr() << std::endl;
            std::cerr << "For: " << Record->MetaKeyFilename << std::endl;
         }
-        if (verify == true && ExpectedIndexHash.empty() == true && (*Target)->IsOptional() == false)
+        if (verify == true && ExpectedIndexHashes.empty() == true && (*Target)->IsOptional() == false)
         {
            Status = StatAuthError;
            strprintf(ErrorText, _("Unable to find hash sum for '%s' in Release file"), (*Target)->MetaKey.c_str());
@@ -1669,14 +1732,14 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)                         /*{{{*/
       {
         if ((*Target)->IsSubIndex() == true)
            new pkgAcqSubIndex(Owner, (*Target)->URI, (*Target)->Description,
-                               (*Target)->ShortDesc, ExpectedIndexHash);
+                               (*Target)->ShortDesc, ExpectedIndexHashes);
         else if (transInRelease == false || Record != NULL || compressedAvailable == true)
         {
            if (_config->FindB("Acquire::PDiffs",true) == true && transInRelease == true &&
                MetaIndexParser->Exists((*Target)->MetaKey + ".diff/Index") == true)
-              new pkgAcqDiffIndex(Owner, *Target, ExpectedIndexHash, MetaIndexParser);
+              new pkgAcqDiffIndex(this, *Target, ExpectedIndexHashes, MetaIndexParser);
            else
-              new pkgAcqIndexTrans(Owner, *Target, ExpectedIndexHash, MetaIndexParser);
+              new pkgAcqIndexTrans(this, *Target, ExpectedIndexHashes, MetaIndexParser);
         }
         continue;
       }
@@ -1687,9 +1750,9 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)                           /*{{{*/
          instead, but passing the required info to it is to much hassle */
       if(_config->FindB("Acquire::PDiffs",true) == true && (verify == false ||
          MetaIndexParser->Exists((*Target)->MetaKey + ".diff/Index") == true))
-        new pkgAcqDiffIndex(Owner, *Target, ExpectedIndexHash, MetaIndexParser);
+        new pkgAcqDiffIndex(this, *Target, ExpectedIndexHashes, MetaIndexParser);
       else
-        new pkgAcqIndex(Owner, *Target, ExpectedIndexHash, MetaIndexParser);
+        new pkgAcqIndex(this, *Target, ExpectedIndexHashes, MetaIndexParser);
    }
 }
                                                                        /*}}}*/
@@ -1773,8 +1836,10 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message)                       /*{{{*/
 // pkgAcqMetaIndex::Failed - no Release file present or no signature file present      /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)
+void pkgAcqMetaIndex::Failed(string /*Message*/,
+                             pkgAcquire::MethodConfig * /*Cnf*/)
 {
+#if 0
    if (AuthPass == true)
    {
       // gpgv method failed, if we have a good signature 
@@ -1812,7 +1877,7 @@ void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)
       // gpgv method failed 
       ReportMirrorFailure("GPGFailure");
    }
-
+#endif
    /* Always move the meta index, even if gpgv failed. This ensures
     * that PackageFile objects are correctly filled in */
    if (FileExists(DestFile)) {
@@ -1838,11 +1903,21 @@ void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)
    QueueIndexes(false);
 }
                                                                        /*}}}*/
+
+void pkgAcqMetaIndex::Finished()
+{
+   if(_config->FindB("Debug::Acquire::Transaction", false) == true)
+      std::clog << "Finished: " << DestFile <<std::endl;
+   if(Owner->TransactionHasError((unsigned long)this) == false)
+      Owner->CommitTransaction((unsigned long)this);
+}
+
+
 pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire *Owner,              /*{{{*/
                string const &URI, string const &URIDesc, string const &ShortDesc,
                string const &MetaIndexURI, string const &MetaIndexURIDesc, string const &MetaIndexShortDesc,
                string const &MetaSigURI, string const &MetaSigURIDesc, string const &MetaSigShortDesc,
-               const vector<struct IndexTarget*>* IndexTargets,
+               const vector<IndexTarget*>* IndexTargets,
                indexRecords* MetaIndexParser) :
        pkgAcqMetaIndex(Owner, URI, URIDesc, ShortDesc, "", IndexTargets, MetaIndexParser),
        MetaIndexURI(MetaIndexURI), MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc),
@@ -1878,7 +1953,7 @@ pkgAcqMetaClearSig::~pkgAcqMetaClearSig()                         /*{{{*/
 // pkgAcqMetaClearSig::Custom600Headers - Insert custom request headers        /*{{{*/
 // ---------------------------------------------------------------------
 // FIXME: this can go away once the InRelease file is used widely
-string pkgAcqMetaClearSig::Custom600Headers()
+string pkgAcqMetaClearSig::Custom600Headers() const
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
@@ -1927,7 +2002,7 @@ void pkgAcqMetaClearSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*
 pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources,
                             pkgRecords *Recs,pkgCache::VerIterator const &Version,
                             string &StoreFilename) :
-               Item(Owner), Version(Version), Sources(Sources), Recs(Recs), 
+               Item(Owner, HashStringList()), Version(Version), Sources(Sources), Recs(Recs), 
                StoreFilename(StoreFilename), Vf(Version.FileList()), 
               Trusted(false)
 {
@@ -2012,7 +2087,6 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources,
    checking later. */
 bool pkgAcqArchive::QueueNext()
 {
-   string const ForceHash = _config->Find("Acquire::ForceHash");
    for (; Vf.end() == false; ++Vf)
    {
       // Ignore not source sources
@@ -2033,31 +2107,10 @@ bool pkgAcqArchive::QueueNext()
       pkgRecords::Parser &Parse = Recs->Lookup(Vf);
       if (_error->PendingError() == true)
         return false;
-      
+
       string PkgFile = Parse.FileName();
-      if (ForceHash.empty() == false)
-      {
-        if(stringcasecmp(ForceHash, "sha512") == 0)
-           ExpectedHash = HashString("SHA512", Parse.SHA512Hash());
-        else if(stringcasecmp(ForceHash, "sha256") == 0)
-           ExpectedHash = HashString("SHA256", Parse.SHA256Hash());
-        else if (stringcasecmp(ForceHash, "sha1") == 0)
-           ExpectedHash = HashString("SHA1", Parse.SHA1Hash());
-        else
-           ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
-      }
-      else
-      {
-        string Hash;
-        if ((Hash = Parse.SHA512Hash()).empty() == false)
-           ExpectedHash = HashString("SHA512", Hash);
-        else if ((Hash = Parse.SHA256Hash()).empty() == false)
-           ExpectedHash = HashString("SHA256", Hash);
-        else if ((Hash = Parse.SHA1Hash()).empty() == false)
-           ExpectedHash = HashString("SHA1", Hash);
-        else
-           ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
-      }
+      ExpectedHashes = Parse.Hashes();
+
       if (PkgFile.empty() == true)
         return _error->Error(_("The package index files are corrupted. No Filename: "
                              "field for package %s."),
@@ -2144,10 +2197,10 @@ bool pkgAcqArchive::QueueNext()
 // AcqArchive::Done - Finished fetching                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void pkgAcqArchive::Done(string Message,unsigned long long Size,string CalcHash,
+void pkgAcqArchive::Done(string Message,unsigned long long Size, HashStringList const &CalcHashes,
                         pkgAcquire::MethodConfig *Cfg)
 {
-   Item::Done(Message,Size,CalcHash,Cfg);
+   Item::Done(Message, Size, CalcHashes, Cfg);
    
    // Check the size
    if (Size != Version->Size)
@@ -2155,12 +2208,12 @@ void pkgAcqArchive::Done(string Message,unsigned long long Size,string CalcHash,
       RenameOnError(SizeMismatch);
       return;
    }
-   
-   // Check the hash
+
    // FIXME: could this empty() check impose *any* sort of security issue?
-   if(ExpectedHash.empty() == false && ExpectedHash.toStr() != CalcHash)
+   if(ExpectedHashes.usable() && ExpectedHashes != CalcHashes)
    {
       RenameOnError(HashSumMismatch);
+      printHashSumComparision(DestFile, ExpectedHashes, CalcHashes);
       return;
    }
 
@@ -2232,7 +2285,7 @@ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
                                                                        /*}}}*/
 // AcqArchive::IsTrusted - Determine whether this archive comes from a trusted source /*{{{*/
 // ---------------------------------------------------------------------
-APT_PURE bool pkgAcqArchive::IsTrusted()
+APT_PURE bool pkgAcqArchive::IsTrusted() const
 {
    return Trusted;
 }
@@ -2251,11 +2304,11 @@ void pkgAcqArchive::Finished()
 // AcqFile::pkgAcqFile - Constructor                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* The file is added to the queue */
-pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash,
+pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI, HashStringList const &Hashes,
                       unsigned long long Size,string Dsc,string ShortDesc,
                       const string &DestDir, const string &DestFilename,
                        bool IsIndexFile) :
-                       Item(Owner), ExpectedHash(Hash), IsIndexFile(IsIndexFile)
+                       Item(Owner, Hashes), IsIndexFile(IsIndexFile)
 {
    Retries = _config->FindI("Acquire::Retries",0);
    
@@ -2292,15 +2345,16 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash,
 // AcqFile::Done - Item downloaded OK                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void pkgAcqFile::Done(string Message,unsigned long long Size,string CalcHash,
+void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList const &CalcHashes,
                      pkgAcquire::MethodConfig *Cnf)
 {
-   Item::Done(Message,Size,CalcHash,Cnf);
+   Item::Done(Message,Size,CalcHashes,Cnf);
 
    // Check the hash
-   if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash)
+   if(ExpectedHashes.usable() && ExpectedHashes != CalcHashes)
    {
       RenameOnError(HashSumMismatch);
+      printHashSumComparision(DestFile, ExpectedHashes, CalcHashes);
       return;
    }
    
@@ -2371,7 +2425,7 @@ void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 // AcqIndex::Custom600Headers - Insert custom request headers          /*{{{*/
 // ---------------------------------------------------------------------
 /* The only header we use is the last-modified header. */
-string pkgAcqFile::Custom600Headers()
+string pkgAcqFile::Custom600Headers() const
 {
    if (IsIndexFile)
       return "\nIndex-File: true";