From 0733fb1a9e3c0c586f9a958aa7f26fcfa7292b78 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 27 Feb 2019 20:14:36 +0100
Subject: Adding upstream version 0.13.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 create.cc | 55 +++++++++++++++++++++++++++++++------------------------
 1 file changed, 31 insertions(+), 24 deletions(-)

(limited to 'create.cc')

diff --git a/create.cc b/create.cc
index 0eaa183..cba638a 100644
--- a/create.cc
+++ b/create.cc
@@ -92,15 +92,6 @@ bool option_C_after_relative_filename( const Arg_parser & parser )
   }
 
 
-bool writeblock_wrapper( const int outfd, const uint8_t * const buffer,
-                         const int size )
-  {
-  if( writeblock( outfd, buffer, size ) != size )
-    { show_file_error( archive_namep, "Write error", errno ); return false; }
-  return true;
-  }
-
-
 // infd and outfd can refer to the same file if copying to a lower file
 // position or if source and destination blocks don't overlap.
 // max_size < 0 means no size limit.
@@ -310,6 +301,15 @@ int add_member( const char * const filename, const struct stat *,
 } // end namespace
 
 
+bool writeblock_wrapper( const int outfd, const uint8_t * const buffer,
+                         const int size )
+  {
+  if( writeblock( outfd, buffer, size ) != size )
+    { show_file_error( archive_namep, "Write error", errno ); return false; }
+  return true;
+  }
+
+
 /* Removes any amount of leading "./" and '/' strings from filename.
    Optionally also removes prefixes containing a ".." component. */
 const char * remove_leading_dotslash( const char * const filename,
@@ -322,10 +322,7 @@ const char * remove_leading_dotslash( const char * const filename,
 
   if( dotdot )
     for( int i = 0; filename[i]; ++i )
-      if( filename[i] == '.' && filename[i+1] == '.' &&
-          ( i == 0 || filename[i-1] == '/' ) &&
-          ( filename[i+2] == 0 || filename[i+2] == '/' ) )
-        p = filename + i + 2;
+      if( dotdot_at_i( filename, i ) ) p = filename + i + 2;
   while( *p == '/' || ( *p == '.' && p[1] == '/' ) ) ++p;
   if( p != filename )
     {
@@ -371,8 +368,8 @@ bool fill_headers( const char * const filename, Extended & extended,
       set_error_status( 1 ); return false; }
   print_octal( header + uid_o, uid_l - 1, uid );
   print_octal( header + gid_o, gid_l - 1, gid );
-  const long long mtime = st.st_mtime;		// shut up gcc about time_t
-  if( mtime < 0 || mtime >= 1LL << 33 )
+  const unsigned long long mtime = (st.st_mtime >= 0) ? st.st_mtime : 0;
+  if( mtime >= 1ULL << 33 )
     { show_file_error( filename, "mtime is out of ustar range [0, 8_589_934_591]." );
       set_error_status( 1 ); return false; }
   print_octal( header + mtime_o, mtime_l - 1, mtime );
@@ -388,25 +385,35 @@ bool fill_headers( const char * const filename, Extended & extended,
   else if( S_ISLNK( mode ) )
     {
     typeflag = tf_symlink;
-    long len;
+    long len, sz;
     if( st.st_size <= linkname_l )
-      len = readlink( filename, (char *)header + linkname_o, linkname_l );
+      {
+      len = sz = readlink( filename, (char *)header + linkname_o, linkname_l );
+      while( len > 1 && header[linkname_o+len-1] == '/' )	// trailing '/'
+        { --len; header[linkname_o+len] = 0; }
+      }
     else
       {
       char * const buf = new char[st.st_size+1];
-      len = readlink( filename, buf, st.st_size );
-      if( len == st.st_size )
-        { buf[len] = 0; extended.linkpath( buf ); force_extended_name = true; }
+      len = sz = readlink( filename, buf, st.st_size );
+      if( sz == st.st_size )
+        {
+        while( len > 1 && buf[len-1] == '/' ) --len;	// trailing '/'
+        if( len <= linkname_l ) std::memcpy( header + linkname_o, buf, len );
+        else { buf[len] = 0; extended.linkpath( buf );
+               force_extended_name = true; }
+        }
       delete[] buf;
       }
-    if( len != st.st_size )
-      { show_file_error( filename, "Error reading link", (len < 0) ? errno : 0 );
+    if( sz != st.st_size )
+      { show_file_error( filename, "Error reading link", (sz < 0) ? errno : 0 );
         set_error_status( 1 ); return false; }
     }
   else if( S_ISCHR( mode ) || S_ISBLK( mode ) )
     {
     typeflag = S_ISCHR( mode ) ? tf_chardev : tf_blockdev;
-    if( major( st.st_rdev ) >= 2 << 20 || minor( st.st_rdev ) >= 2 << 20 )
+    if( (unsigned)major( st.st_rdev ) >= 2 << 20 ||
+        (unsigned)minor( st.st_rdev ) >= 2 << 20 )
       { show_file_error( filename, "devmajor or devminor is larger than 2_097_151." );
         set_error_status( 1 ); return false; }
     print_octal( header + devmajor_o, devmajor_l - 1, major( st.st_rdev ) );
@@ -593,7 +600,7 @@ int encode( const std::string & archive_name, const Arg_parser & parser,
         !option_C_after_relative_filename( parser ) )
       {
       // show_file_error( archive_namep, "Multi-threaded --create" );
-      return encode_lz( archive_namep, parser, dictionary_size,
+      return encode_lz( parser, dictionary_size,
                         option_mapping[level].match_len_limit, num_workers,
                         goutfd, debug_level );
       }
-- 
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