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-rw-r--r--lib/PublicInbox/WWW.pm23
1 files changed, 15 insertions, 8 deletions
diff --git a/lib/PublicInbox/WWW.pm b/lib/PublicInbox/WWW.pm
index a8f1ad17..9919f975 100644
--- a/lib/PublicInbox/WWW.pm
+++ b/lib/PublicInbox/WWW.pm
@@ -45,14 +45,21 @@ sub call {
         my $ctx = { env => $env, www => $self };
 
         # we don't care about multi-value
-        %{$ctx->{qp}} = map {
-                utf8::decode($_);
-                tr/+/ /;
-                my ($k, $v) = split(/=/, $_, 2);
-                # none of the keys we care about will need escaping
-                ($k // '', uri_unescape($v // ''))
-        } split(/[&;]+/, $env->{QUERY_STRING});
-
+        # '0' isn't a QUERY_STRING we care about
+        if (my $qs = $env->{QUERY_STRING}) {
+                utf8::decode($qs);
+                $qs =~ tr/+/ /;
+                %{$ctx->{qp}} = map {
+                        # we only use single-char query param keys
+                        if (s/\A([A-Za-z])=//) {
+                                $1 => uri_unescape($_)
+                        } elsif (/\A[a-z]\z/) { # some boolean options
+                                $_ => ''
+                        } else {
+                                () # ignored
+                        }
+                } split(/[&;]+/, $qs);
+        }
         my $path_info = path_info_raw($env);
         my $method = $env->{REQUEST_METHOD};