* add "purge" commandline argument, closes: #133421)

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

diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index 1c5866a4acf72472924ba928d9047ae1ece80cb4..f566b16b803775abfb54995a1d025331b5f4f6de 100644 (file)
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -149,7 +149,7 @@ pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner,
    if(comprExt.empty()) 
    {
       // autoselect the compression method
-      if(FileExists("/usr/bin/bzip2")) 
+      if(FileExists("/bin/bzip2")) 
         CompressionExtension = ".bz2";
       else 
         CompressionExtension = ".gz";
@@ -183,6 +183,7 @@ string pkgAcqIndex::Custom600Headers()
 
 void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
 {
+
    // 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"; 
@@ -194,9 +195,15 @@ void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
       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);
 }
 
@@ -340,12 +347,6 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,
       // 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());
-      }
    }
 
    QueueURI(Desc);
@@ -395,18 +396,19 @@ void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5,
                                                                        /*}}}*/
 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);
-   unlink(Final.c_str());
 
-   // if we get a timeout if fail
+   // if we get a network error we fail gracefully
    if(LookupTag(Message,"FailReason") == "Timeout" || 
-      LookupTag(Message,"FailReason") == "TmpResolveFailure") {
+      LookupTag(Message,"FailReason") == "TmpResolveFailure" ||
+      LookupTag(Message,"FailReason") == "ConnectionRefused") {
       Item::Failed(Message,Cnf);
       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
    new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc,
                       "", IndexTargets, MetaIndexParser);
@@ -430,7 +432,7 @@ pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,
                                 const vector<struct IndexTarget*>* IndexTargets,
                                 indexRecords* MetaIndexParser) :
    Item(Owner), RealURI(URI), SigFile(SigFile), AuthPass(false),
-   MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets)
+   MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets), IMSHit(false)
 {
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
    DestFile += URItoFileName(URI);
@@ -523,6 +525,9 @@ void pkgAcqMetaIndex::RetrievalDone(string Message)
       return;
    }
 
+   // see if the download was a IMSHit
+   IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false);
+
    Complete = true;
 
    string FinalFile = _config->FindDir("Dir::State::lists");
@@ -551,7 +556,7 @@ void pkgAcqMetaIndex::AuthDone(string Message)
       return;
    }
 
-   if (!VerifyVendor())
+   if (!VerifyVendor(Message))
    {
       return;
    }
@@ -609,7 +614,7 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)
    }
 }
 
-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?
@@ -634,6 +639,22 @@ bool pkgAcqMetaIndex::VerifyVendor()
 //          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();
 
@@ -642,7 +663,7 @@ bool pkgAcqMetaIndex::VerifyVendor()
       Transformed = "experimental";
    }
 
-   string::size_type pos = Transformed.rfind('/');
+   pos = Transformed.rfind('/');
    if (pos != string::npos)
    {
       Transformed = Transformed.substr(0, pos);
@@ -688,10 +709,30 @@ 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());
+
    }
 
    // No Release file was present, or verification failed, so fall