From dfe2511e31f232a8a8880eba40af40d1deb0e49c Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Mon, 6 May 2019 11:40:08 +0200
Subject: Merge libapt-inst into libapt-pkg

---
 apt-pkg/dirstream.cc | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 apt-pkg/dirstream.cc

(limited to 'apt-pkg/dirstream.cc')

diff --git a/apt-pkg/dirstream.cc b/apt-pkg/dirstream.cc
new file mode 100644
index 000000000..d6cf0ab3f
--- /dev/null
+++ b/apt-pkg/dirstream.cc
@@ -0,0 +1,118 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+
+   Directory Stream 
+   
+   This class provides a simple basic extractor that can be used for
+   a number of purposes.
+   
+   ##################################################################### */
+									/*}}}*/
+// Include Files							/*{{{*/
+#include <config.h>
+
+#include <apt-pkg/dirstream.h>
+#include <apt-pkg/error.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <apti18n.h>
+									/*}}}*/
+
+// DirStream::DoItem - Process an item					/*{{{*/
+// ---------------------------------------------------------------------
+/* This is a very simple extractor, it does not deal with things like
+   overwriting directories with files and so on. */
+bool pkgDirStream::DoItem(Item &Itm,int &Fd)
+{
+   switch (Itm.Type)
+   {
+      case Item::File:
+      {
+	 /* Open the output file, NDELAY is used to prevent this from 
+	    blowing up on device special files.. */
+	 int iFd = open(Itm.Name,O_NDELAY|O_WRONLY|O_CREAT|O_TRUNC|O_APPEND,
+		       Itm.Mode);
+	 if (iFd < 0)
+	    return _error->Errno("open",_("Failed to write file %s"),
+				 Itm.Name);
+	 
+	 // fchmod deals with umask and fchown sets the ownership
+	 if (fchmod(iFd,Itm.Mode) != 0)
+	 {
+	    close(iFd);
+	    return _error->Errno("fchmod",_("Failed to write file %s"), Itm.Name);
+	 }
+	 if (fchown(iFd,Itm.UID,Itm.GID) != 0 && errno != EPERM)
+	 {
+	    close(iFd);
+	    return _error->Errno("fchown",_("Failed to write file %s"), Itm.Name);
+	 }
+	 Fd = iFd;
+	 return true;
+      }
+      
+      case Item::HardLink:
+      case Item::SymbolicLink:
+      case Item::CharDevice:
+      case Item::BlockDevice:
+      case Item::Directory:
+      {
+	 struct stat Buf;
+	 // check if the dir is already there, if so return true
+	 if (stat(Itm.Name,&Buf) == 0)
+	 {
+	    if(S_ISDIR(Buf.st_mode))
+	       return true;
+	    // something else is there already, return false
+	    return false;
+	 }
+	 // nothing here, create the dir
+	 if(mkdir(Itm.Name,Itm.Mode) < 0)
+	    return false;
+	 return true;
+      }
+      case Item::FIFO:
+      break;
+   }
+   
+   return true;
+}
+									/*}}}*/
+// DirStream::FinishedFile - Finished processing a file			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgDirStream::FinishedFile(Item &Itm,int Fd)
+{
+   if (Fd < 0)
+      return true;
+
+   /* Set the modification times. The only way it can fail is if someone
+      has futzed with our file, which is intolerable :> */
+   struct timeval times[2];
+   times[0].tv_sec = times[1].tv_sec = Itm.MTime;
+   times[0].tv_usec = times[1].tv_usec = 0;
+   if (utimes(Itm.Name, times) != 0)
+      _error->Errno("utimes", "Failed to set modification time for %s",Itm.Name);
+
+   if (close(Fd) != 0)
+      return _error->Errno("close",_("Failed to close file %s"),Itm.Name);
+   return true;
+}
+									/*}}}*/
+// DirStream::Fail - Failed processing a file				/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgDirStream::Fail(Item &/*Itm*/, int Fd)
+{
+   if (Fd < 0)
+      return true;
+   
+   close(Fd);
+   return false;
+}
+									/*}}}*/
-- 
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