# Some shared sub routines
#
# Author: Patrick Canterino <patshaping@gmx.net>
-# Last modified: 2004-07-28
+# Last modified: 2004-11-13
#
use strict;
# check_path()
#
-# Check, if a virtual path is above a virtual root directory
+# Check if a virtual path is above a virtual root directory
# (currently no check if the path exists - check otherwise!)
#
# Params: 1. Virtual root directory
$path =~ s!^/{1}!!;
$path = $root."/".$path;
- unless(-d $path)
- {
- # The path points to a file
- # We have to extract the directory name and create the absolute path
+ # We extract the last part of the path and create the absolute path
- my $dir = upper_path($path);
- my $file = file_name($path);
+ my $first = upper_path($path);
+ my $last = file_name($path);
- $dir = abs_path($dir);
- $path = $dir."/".$file;
- }
- else
- {
- $path = abs_path($path);
- }
+ $first = abs_path($first);
+ $path = $first."/".$last;
- $path = File::Spec->canonpath($path);
+ $first = File::Spec->canonpath($first);
+ $path = File::Spec->canonpath($path);
# Check if the path is above the root directory
- return if(index($path,$root) == -1);
+ return if(index($path,$root) != 0);
+ return if($first eq $root && $last =~ m!^(/|\\)?\.\.(/|\\)?$!);
# Create short path name
# mode_string()
#
-# Convert a binary file mode string into a human
-# readable string (rwxr-x-r-x)
+# Convert a file mode number into a human readable string (rwxr-x-r-x)
+# (also supports SetUID, SetGID and Sticky Bit)
#
-# Params: Binary file mode string
+# Params: File mode number
#
-# Return: Humand readable mode string
+# Return: Human readable mode string
sub mode_string($)
{
- my $mode = shift;
-
+ my $mode = shift;
my $string = "";
- # Owner
- $string .= (($mode & 0x0100) ? 'r' : '-') .
- (($mode & 0x0080) ? 'w' : '-') .
- (($mode & 0x0040) ?
- (($mode & 0x0800) ? 's' : 'x' ) :
- (($mode & 0x0800) ? 'S' : '-')
- );
-
- # Group
- $string .= (($mode & 0x0020) ? 'r' : '-') .
- (($mode & 0x0010) ? 'w' : '-') .
- (($mode & 0x0008) ?
- (($mode & 0x0400) ? 's' : 'x') :
- (($mode & 0x0400) ? 'S' : '-')
- );
-
- # World
- $string .= (($mode & 0x0004) ? 'r' : '-') .
- (($mode & 0x0002) ? 'w' : '-') .
- (($mode & 0x0001) ?
- (($mode & 0x0200) ? 't' : 'x' ) :
- (($mode & 0x0200) ? 'T' : '-')
- );
+ # User
+
+ $string = ($mode & 00400) ? "r" : "-";
+ $string .= ($mode & 00200) ? "w" : "-";
+ $string .= ($mode & 00100) ? (($mode & 04000) ? "s" : "x") :
+ ($mode & 04000) ? "S" : "-";
+
+ # Group
+
+ $string .= ($mode & 00040) ? "r" : "-";
+ $string .= ($mode & 00020) ? "w" : "-";
+ $string .= ($mode & 00010) ? (($mode & 02000) ? "s" : "x") :
+ ($mode & 02000) ? "S" : "-";
+
+ # Other
+
+ $string .= ($mode & 00004) ? "r" : "-";
+ $string .= ($mode & 00002) ? "w" : "-";
+ $string .= ($mode & 00001) ? (($mode & 01000) ? "t" : "x") :
+ ($mode & 01000) ? "T" : "-";
return $string;
}