build/unix/abs2rel.pl@ac0c01689b40 (annotated)
build/unix/abs2rel.pl
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | #!env perl |
| michael@0 | 2 | |
| michael@0 | 3 | # This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | # License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | # file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 6 | |
| michael@0 | 7 | use File::Spec::Unix; |
| michael@0 | 8 | use strict; |
| michael@0 | 9 | |
| michael@0 | 10 | print "Usage: $0 dest_path start_path\n" if ($#ARGV+1 != 2); |
| michael@0 | 11 | my $finish = my_canonpath(shift); |
| michael@0 | 12 | my $start = my_canonpath(shift); |
| michael@0 | 13 | |
| michael@0 | 14 | my $res = File::Spec::Unix->abs2rel($finish, $start); |
| michael@0 | 15 | |
| michael@0 | 16 | #print STDERR "abs2rel($finish,$start) = $res\n"; |
| michael@0 | 17 | print "$res\n"; |
| michael@0 | 18 | |
| michael@0 | 19 | sub my_canonpath($) { |
| michael@0 | 20 | my ($file) = @_; |
| michael@0 | 21 | my (@inlist, @outlist, $dir); |
| michael@0 | 22 | |
| michael@0 | 23 | # Do what File::Spec::Unix->no_upwards should do |
| michael@0 | 24 | my @inlist = split(/\//, File::Spec::Unix->canonpath($file)); |
| michael@0 | 25 | foreach $dir (@inlist) { |
| michael@0 | 26 | if ($dir eq '..') { |
| michael@0 | 27 | pop @outlist; |
| michael@0 | 28 | } else { |
| michael@0 | 29 | push @outlist, $dir; |
| michael@0 | 30 | } |
| michael@0 | 31 | } |
| michael@0 | 32 | $file = join '/',@outlist; |
| michael@0 | 33 | return $file; |
| michael@0 | 34 | } |
| michael@0 | 35 |
