Bug 1284979 - Write test case to find obvious uses of inline javascript in the templates

t/016csp.t

+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This Source Code Form is "Incompatible With Secondary Licenses", as
+# defined by the Mozilla Public License, v. 2.0.
+
+#################
+#Bugzilla Test 4#
+####Templates####
+
+use 5.14.0;
+use strict;
+use warnings;
+
+use lib qw(. lib local/lib/perl5 t);
+
+use Test::More;
+use File::Find;
+use Support::Templates;
+use List::MoreUtils qw(any);
+use Text::Balanced qw(gen_extract_tagged extract_multiple);
+
+unless ( $ENV{CSP_TESTING} ) {
+    plan( skip_all => "CSP tests not yet default" );
+    exit;
+}
+
+my @event_attrs = qw(
+    onabort onafterprint onbeforeprint onbeforeunload onblur oncanplay oncanplaythrough onchange onclick oncontextmenu
+    oncopy oncuechange oncut ondblclick ondrag ondragend ondragenter ondragleave ondragover ondragstart ondrop
+    ondurationchange onemptied onended onerror onfocus onhashchange oninput oninvalid onkeydown onkeypress onkeyup onload
+    onloadeddata onloadedmetadata onloadstart onmessage onmousedown onmousemove onmouseout onmouseover onmouseup
+    onmousewheel onoffline ononline onpagehide onpageshow onpaste onpause onplay onplaying onpopstate onprogress
+    onratechange onreset onresize onscroll onsearch onseeked onseeking onselect onshow onstalled onstorage onsubmit
+    onsuspend ontimeupdate ontoggle onunload onvolumechange onwaiting onwheel
+);
+
+my %score;
+sub wanted {
+    my $name = $File::Find::name;
+
+    return unless /\.html\.tmpl$/;
+    return unless -f $name;
+    open my $fh, '<', $name or return;
+    my $data = do { local $/ = undef; scalar <$fh> };
+    close $fh;
+
+    my $tt_parser = gen_extract_tagged( "\\[%", "%\\]", undef, { bad => ["\\[%"] } );
+    my @tt_matches = extract_multiple($data, [ $tt_parser ]);
+
+    my $found_tt_javascript = 0;
+    my $found_tt_onload = 0;
+    my $found_script_content = 0;
+    my @found_event_attr;
+    foreach my $match (@tt_matches) {
+        if ($match =~ /^\[%/) {
+            if ($match =~ /javascript\s+=\s+/) {
+                $found_tt_javascript = 1;
+                $score{$name}++;
+            }
+            elsif ($match =~ /onload\s*=/) {
+                $found_tt_onload = 1;
+                $score{$name}++;
+            }
+        }
+        else {
+            foreach my $event_attr (@event_attrs) {
+                if ($match =~ /\Q$event_attr\E\s*=\s*['"]/s) {
+                    push @found_event_attr, $event_attr;
+                    $score{$name}++;
+                }
+            }
+            my $tag_parser = gen_extract_tagged();
+            while (my @tag = $tag_parser->($match)) {
+                last unless defined $tag[0];
+
+                if ($tag[3] && $tag[3] =~ /<script/) {
+                    if ($tag[4]) {
+                        $score{$name}++;
+                        $found_script_content = 1;
+                    }
+                }
+
+            }
+        }
+    }
+
+    my $found_javascript_link = $data =~ /javascript:\S/;
+    $score{$name}++ if $found_javascript_link;
+
+    my $found_problems = $found_tt_javascript || $found_tt_onload || @found_event_attr || $found_script_content || $found_javascript_link;
+    ok(!$found_problems, "checking $name");
+    if ($found_problems) {
+        my $msg = "problems:\n";
+        $msg .= "  found javascript tt var\n" if $found_tt_javascript;
+        $msg .= "  found onload tt var\n" if $found_tt_onload;
+        $msg .= "  found event attributes: " . join(", ", @found_event_attr) . "\n" if @found_event_attr;
+        $msg .= "  found script content\n" if $found_script_content;
+        $msg .= "  found javascript: link\n" if $found_javascript_link;
+        diag $msg;
+    }
+}
+
+sub check_for_javascript {
+    my ($block) = @_;
+    diag $block;
+    return '';
+}
+
+diag @include_paths;
+find({ no_chdir => 1, wanted => \&wanted }, @include_paths);
+
+# print out a json file so we can see how bad we're doing.
+if (my $score_file = $ENV{CSP_SCORE_FILE}) {
+    require JSON::XS;
+    diag "writing scores to $score_file";
+    open my $score_fh, '>', $score_file;
+    print $score_fh JSON::XS->new->pretty->canonical(1)->encode(\%score);
+    close $score_fh;
+}
+
+done_testing();