Make sure we do not pass multiple CGI parameters in function calls

[ikiwiki.git] / IkiWiki / Plugin / attachment.pm

diff --git a/IkiWiki/Plugin/attachment.pm b/IkiWiki/Plugin/attachment.pm
index 83dd120f649ea13898ee9cc479bb576cb94043b7..fb8a6539eac53fd66c85e4c98c09bfb1dbf71bb7 100644 (file)
--- a/IkiWiki/Plugin/attachment.pm
+++ b/IkiWiki/Plugin/attachment.pm
@@ -132,7 +132,7 @@ sub formbuilder (@) {
 
        return if ! defined $form->field("do") || ($form->field("do") ne "edit" && $form->field("do") ne "create") ;
 
-       my $filename=Encode::decode_utf8($q->param('attachment'));
+       my $filename=Encode::decode_utf8(scalar $q->param('attachment'));
        if (defined $filename && length $filename) {
                attachment_store($filename, $form, $q, $params{session});
        }
@@ -142,7 +142,7 @@ sub formbuilder (@) {
        }
 
        if ($form->submitted eq "Insert Links") {
-               my $page=quotemeta(Encode::decode_utf8($q->param("page")));
+               my $page=quotemeta(Encode::decode_utf8(scalar $q->param("page")));
                my $add="";
                foreach my $f ($q->param("attachment_select")) {
                        $f=Encode::decode_utf8($f);
@@ -229,8 +229,10 @@ sub attachment_store {
                check_canattach($session, $final_filename, $tempfile);
        };
        if ($@) {
-               json_response($q, $form, $dest."/".$filename, $@);
-               error $@;
+               # save error in case called functions clobber $@
+               my $error = $@;
+               json_response($q, $form, $dest."/".$filename, $error);
+               error $error;
        }
 
        # Move the attachment into holding directory.