cmdline/apt-get.cc:

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

diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index a7132ce1d20af0b4f464495096f809ddef064462..7cae6c8b7f2820ef956730bcb417239a9a83fd22 100644 (file)
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -345,7 +345,7 @@ void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash,
  */
 pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
                                   string URI,string URIDesc,string ShortDesc,
-                                  HashString ExpectedMD5, 
+                                  HashString ExpectedHash, 
                                   vector<DiffInfo> diffs)
    : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash), 
      available_patches(diffs)
@@ -641,7 +641,7 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash,
          std::cerr << "  Expected Hash: " << ExpectedHash.toStr() << std::endl;
       }
 
-      if (!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile))
+      if (!ExpectedHash.empty() && ExpectedHash.toStr() != Hash)
       {
          Status = StatAuthError;
          ErrorText = _("Hash Sum mismatch");
@@ -675,7 +675,6 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash,
       // The files timestamp matches
       if (StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
         return;
-
       Decompression = true;
       Local = true;
       DestFile += ".decomp";
@@ -702,7 +701,7 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash,
       Local = true;
    
    string compExt = Desc.URI.substr(Desc.URI.size()-3);
-   char *decompProg;
+   const char *decompProg;
    if(compExt == "bz2") 
       decompProg = "bzip2";
    else if(compExt == ".gz") 
@@ -771,16 +770,19 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
    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)
    {
-      // 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);
@@ -792,7 +794,7 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
 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);
@@ -822,6 +824,12 @@ void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5,
 
    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);
@@ -838,7 +846,7 @@ void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
       Item::Failed(Message,Cnf);
       // move the sigfile back on transient network failures 
       if(FileExists(DestFile))
-        Rename(DestFile,Final);
+        Rename(LastGoodSig,Final);
 
       // set the status back to , Item::Failed likes to reset it
       Status = pkgAcquire::Item::StatTransientNetworkError;
@@ -966,18 +974,18 @@ void pkgAcqMetaIndex::RetrievalDone(string Message)
 
    // 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);
 
-   // 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);
-   }
+
    chmod(FinalFile.c_str(),0644);
    DestFile = FinalFile;
 }
@@ -1296,11 +1304,11 @@ bool pkgAcqArchive::QueueNext()
       
       string PkgFile = Parse.FileName();
       if(Parse.SHA256Hash() != "")
-        hash = HashString("SHA256", Parse.SHA256Hash());
+        ExpectedHash = HashString("SHA256", Parse.SHA256Hash());
       else if (Parse.SHA1Hash() != "")
-        hash = HashString("SHA1", Parse.SHA1Hash());
+        ExpectedHash = HashString("SHA1", Parse.SHA1Hash());
       else 
-        hash = HashString("MD5Sum", Parse.MD5Hash());
+        ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
       if (PkgFile.empty() == true)
         return _error->Error(_("The package index files are corrupted. No Filename: "
                              "field for package %s."),
@@ -1394,7 +1402,7 @@ void pkgAcqArchive::Done(string Message,unsigned long Size,string CalcHash,
    }
    
    // Check the hash
-   if(!hash.VerifyFile(DestFile))
+   if(ExpectedHash.toStr() != CalcHash)
    {
       Status = StatError;
       ErrorText = _("Hash Sum mismatch");
@@ -1492,10 +1500,10 @@ void pkgAcqArchive::Finished()
 // 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) :
-                       Item(Owner), hash(MD5)
+                       Item(Owner), ExpectedHash(Hash)
 {
    Retries = _config->FindI("Acquire::Retries",0);
    
@@ -1537,8 +1545,8 @@ void pkgAcqFile::Done(string Message,unsigned long Size,string CalcHash,
 {
    Item::Done(Message,Size,CalcHash,Cnf);
 
-   // Check the md5
-   if(!hash.VerifyFile(DestFile))
+   // Check the hash
+   if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash)
    {
       Status = StatError;
       ErrorText = "Hash Sum mismatch";