use pkgAcqMetaBase as the transactionManager

[apt.git] / methods / copy.cc

diff --git a/methods/copy.cc b/methods/copy.cc
index 72896b4c076e77ce56086c6a3519770571d599c4..8c797ff1fd6a183fd9aa0a59a55697bb241dad84 100644 (file)
--- a/methods/copy.cc
+++ b/methods/copy.cc
@@ -9,33 +9,54 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
+#include <config.h>
+
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/hashes.h>
+#include <apt-pkg/configuration.h>
 
+#include <string>
 #include <sys/stat.h>
-#include <utime.h>
-#include <unistd.h>
+#include <sys/time.h>
+
 #include <apti18n.h>
                                                                        /*}}}*/
 
 class CopyMethod : public pkgAcqMethod
 {
    virtual bool Fetch(FetchItem *Itm);
+   void CalculateHashes(FetchResult &Res);
    
    public:
    
-   CopyMethod() : pkgAcqMethod("1.0",SingleInstance) {};
+   CopyMethod() : pkgAcqMethod("1.0",SingleInstance|SendConfig) {};
 };
 
+void CopyMethod::CalculateHashes(FetchResult &Res)
+{
+   // For gzip indexes we need to look inside the gzip for the hash
+   // We can not use the extension here as its not used in partial 
+   // on a IMS hit
+   FileFd::OpenMode OpenMode = FileFd::ReadOnly;
+   if (_config->FindB("Acquire::GzipIndexes", false) == true)
+      OpenMode = FileFd::ReadOnlyGzip;
+
+   Hashes Hash;
+   FileFd Fd(Res.Filename, OpenMode);
+   Hash.AddFD(Fd);
+   Res.TakeHashes(Hash);
+}
+
 // CopyMethod::Fetch - Fetch a file                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool CopyMethod::Fetch(FetchItem *Itm)
 {
    URI Get = Itm->Uri;
-   string File = Get.Path;
+   std::string File = Get.Path;
 
    // Stat the file and send a start message
    struct stat Buf;
@@ -49,10 +70,18 @@ bool CopyMethod::Fetch(FetchItem *Itm)
    Res.LastModified = Buf.st_mtime;
    Res.IMSHit = false;      
    URIStart(Res);
+
+   // when the files are identical, just compute the hashes
+   if(File == Itm->DestFile)
+   {
+      CalculateHashes(Res);
+      URIDone(Res);
+      return true;
+   }
    
    // See if the file exists
    FileFd From(File,FileFd::ReadOnly);
-   FileFd To(Itm->DestFile,FileFd::WriteEmpty);
+   FileFd To(Itm->DestFile,FileFd::WriteAtomic);
    To.EraseOnFailure();
    if (_error->PendingError() == true)
    {
@@ -69,21 +98,17 @@ bool CopyMethod::Fetch(FetchItem *Itm)
 
    From.Close();
    To.Close();
-   
+
    // Transfer the modification times
-   struct utimbuf TimeBuf;
-   TimeBuf.actime = Buf.st_atime;
-   TimeBuf.modtime = Buf.st_mtime;
-   if (utime(Itm->DestFile.c_str(),&TimeBuf) != 0)
-   {
-      To.OpFail();
-      return _error->Errno("utime",_("Failed to set modification time"));
-   }
-   
-   Hashes Hash;
-   FileFd Fd(Res.Filename, FileFd::ReadOnly);
-   Hash.AddFD(Fd.Fd(), Fd.Size());
-   Res.TakeHashes(Hash);
+   struct timeval times[2];
+   times[0].tv_sec = Buf.st_atime;
+   times[1].tv_sec = Buf.st_mtime;
+   times[0].tv_usec = times[1].tv_usec = 0;
+   if (utimes(Res.Filename.c_str(), times) != 0)
+      return _error->Errno("utimes",_("Failed to set modification time"));
+
+   CalculateHashes(Res);
+
    URIDone(Res);
    return true;
 }