Bug 745320: Shared queries do not work when tags are part of the query

Bugzilla/Search.pm

@@ -802,8 +802,8 @@ sub _param_array {
 }
 
 sub _params { $_[0]->{params} }
-
 sub _user { return $_[0]->{user} }
+sub _sharer_id { $_[0]->{sharer} }
 
 ##############################
 # Internal Accessors: SELECT #
@@ -2546,8 +2546,8 @@ sub _multiselect_table {
     }
     elsif ($field eq 'tag') {
         $args->{full_field} = 'tag.name';
-        return "bug_tag INNER JOIN tag ON bug_tag.tag_id = tag.id"
-                                       . " AND user_id = " . $self->_user->id;
+        return "bug_tag INNER JOIN tag ON bug_tag.tag_id = tag.id AND user_id = "
+               . ($self->_sharer_id || $self->_user->id);
     }
     elsif ($field eq 'bug_group') {
         $args->{full_field} = 'groups.name';

buglist.cgi

@@ -211,7 +211,9 @@ sub LookupNamedQuery {
     $query->url
        || ThrowUserError("buglist_parameters_required");
 
-    return wantarray ? ($query->url, $query->id) : $query->url;
+    # Detaint $sharer_id.
+    $sharer_id = $query->user->id if $sharer_id;
+    return wantarray ? ($query->url, $query->id, $sharer_id) : $query->url;
 }
 
 # Inserts a Named Query (a "Saved Search") into the database, or
@@ -330,6 +332,7 @@ sub _close_standby_message {
 
 my $cmdtype   = $cgi->param('cmdtype')   || '';
 my $remaction = $cgi->param('remaction') || '';
+my $sharer_id;
 
 # Backwards-compatibility - the old interface had cmdtype="runnamed" to run
 # a named command, and we can't break this because it's in bookmarks.
@@ -366,8 +369,9 @@ $filename =~ s/"/\\"/g; # escape quotes
 if ($cmdtype eq "dorem") {  
     if ($remaction eq "run") {
         my $query_id;
-        ($buffer, $query_id) = LookupNamedQuery(scalar $cgi->param("namedcmd"),
-                                                scalar $cgi->param('sharer_id'));
+        ($buffer, $query_id, $sharer_id) =
+          LookupNamedQuery(scalar $cgi->param("namedcmd"),
+                           scalar $cgi->param('sharer_id'));
         # If this is the user's own query, remember information about it
         # so that it can be modified easily.
         $vars->{'searchname'} = $cgi->param('namedcmd');
@@ -727,7 +731,8 @@ if ($format->{'extension'} eq 'html' && !defined $params->param('limit')) {
 # Generate the basic SQL query that will be used to generate the bug list.
 my $search = new Bugzilla::Search('fields' => \@selectcolumns, 
                                   'params' => scalar $params->Vars,
-                                  'order' => \@order_columns);
+                                  'order'  => \@order_columns,
+                                  'sharer' => $sharer_id);
 my $query = $search->sql;
 $vars->{'search_description'} = $search->search_description;
 $order = join(',', $search->order);