X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/d2cca6ec46865a1f5167f846e67150dc19ca2022..30c8107e9c56d7d78dcf9136f94aeed9d631dfb3:/methods/gzip.cc

diff --git a/methods/gzip.cc b/methods/gzip.cc
index 48c8e9892..2429069e5 100644
--- a/methods/gzip.cc
+++ b/methods/gzip.cc
@@ -11,17 +11,20 @@
 // Include Files							/*{{{*/
 #include <config.h>
 
-#include <apt-pkg/fileutl.h>
-#include <apt-pkg/error.h>
+#include <apt-pkg/configuration.h>
 #include <apt-pkg/acquire-method.h>
-#include <apt-pkg/strutl.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/hashes.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/aptconfiguration.h>
 
+#include <string.h>
 #include <sys/stat.h>
-#include <unistd.h>
-#include <utime.h>
-#include <stdio.h>
-#include <errno.h>
+#include <sys/time.h>
+#include <string>
+#include <vector>
+
 #include <apti18n.h>
 									/*}}}*/
 
@@ -29,13 +32,23 @@ const char *Prog;
 
 class GzipMethod : public pkgAcqMethod
 {
-   virtual bool Fetch(FetchItem *Itm);
+   virtual bool Fetch(FetchItem *Itm) APT_OVERRIDE;
+   virtual bool Configuration(std::string Message) APT_OVERRIDE;
    
    public:
    
    GzipMethod() : pkgAcqMethod("1.1",SingleInstance | SendConfig) {};
 };
 
+bool GzipMethod::Configuration(std::string Message)
+{
+   if (pkgAcqMethod::Configuration(Message) == false)
+      return false;
+
+   DropPrivsOrDie();
+
+   return true;
+}
 
 // GzipMethod::Fetch - Decompress the passed URI			/*{{{*/
 // ---------------------------------------------------------------------
@@ -59,19 +72,35 @@ bool GzipMethod::Fetch(FetchItem *Itm)
 
    // Open the source and destination files
    FileFd From;
-   From.Open(Path, FileFd::ReadOnly, *compressor);
+   if (_config->FindB("Method::Compress", false) == false)
+   {
+      From.Open(Path, FileFd::ReadOnly, *compressor);
+      if(From.FileSize() == 0)
+	 return _error->Error(_("Empty files can't be valid archives"));
+   }
+   else
+      From.Open(Path, FileFd::ReadOnly);
+   if (From.IsOpen() == false || From.Failed() == true)
+      return false;
+
+   FileFd To;
+   if (Itm->DestFile != "/dev/null")
+   {
+      if (_config->FindB("Method::Compress", false) == false)
+	 To.Open(Itm->DestFile, FileFd::WriteAtomic);
+      else
+	 To.Open(Itm->DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::Empty, *compressor);
+
+      if (To.IsOpen() == false || To.Failed() == true)
+	 return false;
+      To.EraseOnFailure();
+   }
 
-   if(From.FileSize() == 0)
-      return _error->Error(_("Empty files can't be valid archives"));
 
-   FileFd To(Itm->DestFile,FileFd::WriteAtomic);   
-   To.EraseOnFailure();
-   if (_error->PendingError() == true)
-      return false;
-   
    // Read data from source, generate checksums and write
-   Hashes Hash;
+   Hashes Hash(Itm->ExpectedHashes);
    bool Failed = false;
+   Res.Size = 0;
    while (1) 
    {
       unsigned char Buffer[4*1024];
@@ -79,14 +108,16 @@ bool GzipMethod::Fetch(FetchItem *Itm)
       
       if (!From.Read(Buffer,sizeof(Buffer),&Count))
       {
-	 To.OpFail();
+	 if (To.IsOpen())
+	    To.OpFail();
 	 return false;
       }
       if (Count == 0)
 	 break;
+      Res.Size += Count;
 
       Hash.Add(Buffer,Count);
-      if (To.Write(Buffer,Count) == false)
+      if (To.IsOpen() && To.Write(Buffer,Count) == false)
       {
 	 Failed = true;
 	 break;
@@ -95,36 +126,34 @@ 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"));
-
-   if (stat(Itm->DestFile.c_str(),&Buf) != 0)
-      return _error->Errno("stat",_("Failed to stat"));
-   
+   if (Itm->DestFile != "/dev/null")
+   {
+      struct stat Buf;
+      if (stat(Path.c_str(),&Buf) != 0)
+	 return _error->Errno("stat",_("Failed to stat"));
+
+      struct timeval times[2];
+      times[0].tv_sec = Buf.st_atime;
+      Res.LastModified = times[1].tv_sec = Buf.st_mtime;
+      times[0].tv_usec = times[1].tv_usec = 0;
+      if (utimes(Itm->DestFile.c_str(), times) != 0)
+	 return _error->Errno("utimes",_("Failed to set modification time"));
+   }
+
    // Return a Done response
-   Res.LastModified = Buf.st_mtime;
-   Res.Size = Buf.st_size;
    Res.TakeHashes(Hash);
 
    URIDone(Res);
-   
    return true;
 }
 									/*}}}*/
 
-int main(int argc, char *argv[])
+int main(int, char *argv[])
 {
    setlocale(LC_ALL, "");
 
@@ -132,5 +161,6 @@ int main(int argc, char *argv[])
    ++Prog;
 
    GzipMethod Mth;
+
    return Mth.Run();
 }