X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/d950349bcb3d5972f81b75f304878c33e9187fc8..e209542632e61b9bf07b809c333f1e4b9de7fde9:/methods/gzip.cc

diff --git a/methods/gzip.cc b/methods/gzip.cc
index f1c76066e..f1edb353b 100644
--- a/methods/gzip.cc
+++ b/methods/gzip.cc
@@ -9,6 +9,8 @@
    ##################################################################### */
 									/*}}}*/
 // Include Files							/*{{{*/
+#include <config.h>
+
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/acquire-method.h>
@@ -17,12 +19,13 @@
 
 #include <sys/stat.h>
 #include <unistd.h>
-#include <utime.h>
 #include <stdio.h>
 #include <errno.h>
 #include <apti18n.h>
 									/*}}}*/
 
+const char *Prog;
+
 class GzipMethod : public pkgAcqMethod
 {
    virtual bool Fetch(FetchItem *Itm);
@@ -39,18 +42,26 @@ class GzipMethod : public pkgAcqMethod
 bool GzipMethod::Fetch(FetchItem *Itm)
 {
    URI Get = Itm->Uri;
-   string Path = Get.Host + Get.Path; // To account for relative paths
+   std::string Path = Get.Host + Get.Path; // To account for relative paths
    
    FetchResult Res;
    Res.Filename = Itm->DestFile;
    URIStart(Res);
-   
+
+   std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
+   std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin();
+   for (; compressor != compressors.end(); ++compressor)
+      if (compressor->Name == Prog)
+	 break;
+   if (compressor == compressors.end())
+      return _error->Error("Extraction of file %s requires unknown compressor %s", Path.c_str(), Prog);
+
    // Open the source and destination files
-   FileFd From(Path,FileFd::ReadOnlyGzip);
+   FileFd From;
+   From.Open(Path, FileFd::ReadOnly, *compressor);
 
-   // FIXME add an error message saying that empty files can't be valid archives
    if(From.FileSize() == 0)
-      return false;
+      return _error->Error(_("Empty files can't be valid archives"));
 
    FileFd To(Itm->DestFile,FileFd::WriteAtomic);   
    To.EraseOnFailure();
@@ -63,7 +74,7 @@ bool GzipMethod::Fetch(FetchItem *Itm)
    while (1) 
    {
       unsigned char Buffer[4*1024];
-      unsigned long Count;
+      unsigned long long Count = 0;
       
       if (!From.Read(Buffer,sizeof(Buffer),&Count))
       {
@@ -82,32 +93,35 @@ bool GzipMethod::Fetch(FetchItem *Itm)
    }
    
    From.Close();
-   To.Close();
-   
+
    if (Failed == true)
       return false;
-   
+
    // Transfer the modification times
    struct stat Buf;
    if (stat(Path.c_str(),&Buf) != 0)
       return _error->Errno("stat",_("Failed to stat"));
 
-   struct utimbuf TimeBuf;
-   TimeBuf.actime = Buf.st_atime;
-   TimeBuf.modtime = Buf.st_mtime;
-   if (utime(Itm->DestFile.c_str(),&TimeBuf) != 0)
-      return _error->Errno("utime",_("Failed to set modification time"));
+   struct timespec times[2];
+   times[0].tv_sec = Buf.st_atime;
+   times[1].tv_sec = Buf.st_mtime;
+   times[0].tv_nsec = times[1].tv_nsec = 0;
+   if (futimens(To.Fd(), times) != 0)
+   {
+      To.OpFail();
+      return _error->Errno("futimens",_("Failed to set modification time"));
+   }
+   Res.Size = To.FileSize();
+   To.Close();
 
    if (stat(Itm->DestFile.c_str(),&Buf) != 0)
       return _error->Errno("stat",_("Failed to stat"));
-   
+
    // Return a Done response
    Res.LastModified = Buf.st_mtime;
-   Res.Size = Buf.st_size;
    Res.TakeHashes(Hash);
 
    URIDone(Res);
-   
    return true;
 }
 									/*}}}*/
@@ -116,6 +130,9 @@ int main(int argc, char *argv[])
 {
    setlocale(LC_ALL, "");
 
+   Prog = strrchr(argv[0],'/');
+   ++Prog;
+
    GzipMethod Mth;
    return Mth.Run();
 }