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Limit maximum number of factoid variable expansions

This commit is contained in:
Pragmatic Software 2017-11-12 08:04:42 -08:00
parent 9acb38d790
commit 69c081fd9a
1 changed files with 5 additions and 1 deletions
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6
PBot/Factoids.pm
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@ -403,11 +403,12 @@ sub expand_factoid_vars {
my $depth = 0;
while (1) {
last if ++$depth >= 10;
last if ++$depth >= 20;
my $matches = 0;
$action =~ s/\$0/$root_keyword/g;
my $const_action = $action;
while ($const_action =~ /(\ba\s*|\ban\s*)?(?<!\\)\$([a-zA-Z0-9_:\-#\[\]]+)/gi) {
last if ++$depth >= 20;
my ($a, $v) = ($1, $2);
$v =~ s/(.):$/$1/;
next if $v =~ m/^_/; # underscore-prefixed vars reserved for code-factoids
@ -520,10 +521,13 @@ sub expand_action_arguments {
$action =~ s/\$arglen\b/scalar @args/eg;
my $depth = 0;
my $const_action = $action;
while ($const_action =~ m/\$arg\[([^]]+)]/g) {
my $arg = $1;
last if ++$depth >= 20;
if ($arg eq '*') {
if (not defined $input or $input eq '') {
$action =~ s/\$arg\[\*\]/$nick/;