From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: X-Spam-Status: No, score=-4.0 required=3.0 tests=ALL_TRUSTED,BAYES_00, URIBL_BLOCKED shortcircuit=no autolearn=unavailable autolearn_force=no version=3.4.0 Received: from localhost (dcvr.yhbt.net [127.0.0.1]) by dcvr.yhbt.net (Postfix) with ESMTP id 045491FA7B; Thu, 19 May 2016 22:06:20 +0000 (UTC) Date: Thu, 19 May 2016 22:06:38 +0000 From: Eric Wong To: meta@public-inbox.org Subject: [PATCH 8/7] www: tighten up allowable filenames for attachments Message-ID: <20160519220638.GA7274@dcvr.yhbt.net> References: <20160519212552.4530-1-e@80x24.org> <20160519212847.4822-1-e@80x24.org> <20160519212847.4822-6-e@80x24.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160519212847.4822-6-e@80x24.org> List-Id: Having a file start with '.' or '-' can be confusing and for users, so do not allow it. --- Sorry for the wonky numbering, got trigger-happy with send-email :x lib/PublicInbox/View.pm | 2 +- lib/PublicInbox/WWW.pm | 2 +- t/psgi_attach.t | 17 ++++++++++++++++- 3 files changed, 18 insertions(+), 3 deletions(-) diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm index ec5f390..2194981 100644 --- a/lib/PublicInbox/View.pm +++ b/lib/PublicInbox/View.pm @@ -261,7 +261,7 @@ sub attach_link ($$$$) { $desc = $fn unless defined $desc; $desc = '' unless defined $desc; my $sfn; - if (defined $fn && $fn =~ /\A[\w\.-]+[a-zA-Z0-9]\z/) { + if (defined $fn && $fn =~ /\A[[:alnum:]][\w\.-]+[[:alnum:]]\z/) { $sfn = $fn; } elsif ($ct eq 'text/plain') { $sfn = 'a.txt'; diff --git a/lib/PublicInbox/WWW.pm b/lib/PublicInbox/WWW.pm index 10c2e7c..5b4d6c1 100644 --- a/lib/PublicInbox/WWW.pm +++ b/lib/PublicInbox/WWW.pm @@ -23,7 +23,7 @@ use PublicInbox::GitHTTPBackend; our $INBOX_RE = qr!\A/([\w\.\-]+)!; our $MID_RE = qr!([^/]+)!; our $END_RE = qr!(T/|t/|R/|t\.mbox(?:\.gz)?|t\.atom|raw|)!; -our $ATTACH_RE = qr!(\d[\.\d]*)-([\w\.-]+[a-zA-Z0-9])!i; +our $ATTACH_RE = qr!(\d[\.\d]*)-([[:alnum:]][\w\.-]+[[:alnum:]])!i; sub new { my ($class, $pi_config) = @_; diff --git a/t/psgi_attach.t b/t/psgi_attach.t index 43018e8..ef116c6 100644 --- a/t/psgi_attach.t +++ b/t/psgi_attach.t @@ -36,6 +36,7 @@ my $im = PublicInbox::Import->new($git, 'test', $addr); my $qp = "abcdef=g\n==blah\n"; my $b64 = 'b64'.$buf."\n"; my $txt = "plain\ntext\npass\nthrough\n"; + my $dot = "dotfile\n"; my $parts = [ Email::MIME->create( attributes => { @@ -57,6 +58,12 @@ my $im = PublicInbox::Import->new($git, 'test', $addr); content_type => 'text/plain', }, body => $txt), + Email::MIME->create( + attributes => { + filename => '.dotfile', + content_type => 'text/plain', + }, + body => $dot), ]; my $mime = Email::MIME->create( parts => $parts, @@ -76,7 +83,8 @@ my $im = PublicInbox::Import->new($git, 'test', $addr); $res = $cb->(GET('/test/Z%40B/')); my @href = ($res->content =~ /^href="([^"]+)"/gms); @href = grep(/\A[\d\.]+-/, @href); - is_deeply([qw(1-queue-pee 2-bayce-sixty-four 3-noop.txt)], + is_deeply([qw(1-queue-pee 2-bayce-sixty-four 3-noop.txt + 4-a.txt)], \@href, 'attachment links generated'); $res = $cb->(GET('/test/Z%40B/1-queue-pee')); @@ -97,6 +105,13 @@ my $im = PublicInbox::Import->new($git, 'test', $addr); 'plain text almost matches'); like($txt_res, qr/\n\z/s, 'trailing newline exists in text'); is(index($txt_res, $txt), 0, 'plain text not truncated'); + + $res = $cb->(GET('/test/Z%40B/4-a.txt')); + my $dot_res = $res->content; + ok(length($dot_res) >= length($dot), 'dot almost matches'); + $res = $cb->(GET('/test/Z%40B/4-any-filename.txt')); + is($res->content, $dot_res, 'user-specified filename is OK'); + }); } done_testing(); -- EW