120 lines
2.3 KiB
Perl
120 lines
2.3 KiB
Perl
#!/usr/bin/perl
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# Copyright (C) 2005-2021 Giorgio Maone <https://maone.net>
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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use strict;
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require LWP::UserAgent;
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use LWP::Simple;
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use Regexp::List;
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use File::stat;
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use File::Basename;
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use List::MoreUtils qw(uniq);
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my $HTML_ATOMS_URL = "https://hg.mozilla.org/mozilla-central/raw-file/tip/xpcom/ds/StaticAtoms.py";
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my $HERE = dirname($0);
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my $SOURCE_FILE = "$HERE/../src/xss/InjectionChecker.js";
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sub create_re
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{
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my $cache = "$HERE/html5_events.re";
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my $archive = "$HERE/html5_events_archive.txt";
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my $sb = stat($cache);
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if ($sb && time() - $sb->mtime < 86400)
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{
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open IN, "<$cache";
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my @content = <IN>;
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close IN;
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return $content[0];
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}
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sub fetch_url
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{
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my $url = shift(@_);
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my $ua = LWP::UserAgent->new;
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$ua->agent('Mozilla/5.0');
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$ua->ssl_opts('verify_hostname' => 0);
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my $res = $ua->get($url);
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if ($res->is_success)
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{
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return $res->decoded_content;
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}
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else
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{
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my $err = $res->content;
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my $ca_file = $ua->ssl_opts('SSL_ca_file');
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die ("Could not fetch $url: $err\n$ca_file");
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}
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}
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my $content = fetch_url($HTML_ATOMS_URL);
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$content = join("\n", grep(/^\s*Atom\("on\w+"/, split(/[\n\r]/, $content)));
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$content =~ s/.*"(on\w+)".*/$1 /g;
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open IN, "<$archive";
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my @archived = <IN>;
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close IN;
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$content .= join("\n", @archived);
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$content =~ s/\s+/\n/g;
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$content =~ s/^\s+|\s+$//g;
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my @all_events = grep(!/^only$/, uniq(split("\n", $content)));
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open (OUT, ">$archive");
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print OUT join("\n", @all_events);
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close OUT;
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my $l = Regexp::List->new;
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my $re = $l->list2re(@all_events);
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$re =~ s/\(\?[-^]\w+:(.*)\)/$1/;
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open (OUT, ">$cache");
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print OUT $re;
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close OUT;
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$re;
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}
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sub patch
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{
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my $src = shift;
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my $dst = "$src.tmp";
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my $re = create_re();
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my $must_replace = 0;
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print "Patching $src...\n";
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open IN, "<$src" or die ("Can't open $src!");
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open OUT, ">$dst" or die ("Can't open $dst!");
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while (<IN>)
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{
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my $line = $_;
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$must_replace = $line ne $_ if s/^(\s*const IC_EVENT_PATTERN\s*=\s*")([^"]+)/$1$re/;
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print OUT $_;
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}
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close IN;
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close OUT;
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if ($must_replace) {
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rename $dst, $src;
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print "Patched.\n";
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return 0;
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}
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unlink $dst;
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print "Nothing to do.\n";
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return 1;
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}
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exit(patch($SOURCE_FILE));
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