+sub sessioncgi ($$) {
+ my ($q, $session) = @_;
+ my $do = $q->param('do');
+ my $rev = $q->param('rev');
+
+ return unless $do eq 'revert' && $rev;
+
+ IkiWiki::rcs_preprevert(cgi => $q, session => $session, rev => $rev);
+
+ my ($form, $buttons) = confirmation_form($q, $session);
+ IkiWiki::decode_form_utf8($form);
+
+ if ($form->submitted eq 'Revert' && $form->validate) {
+ IkiWiki::checksessionexpiry($q, $session, $q->param('sid'));
+ IkiWiki::disable_commit_hook();
+ my $r = IkiWiki::rcs_revert(
+ session => $session,
+ rev => $rev);
+ IkiWiki::enable_commit_hook();
+
+ if ($r) {
+ die "Revert '$rev' failed.";
+ }
+ else {
+ require IkiWiki::Render;
+ IkiWiki::refresh();
+ IkiWiki::saveindex();
+ }
+ }
+ else {
+ $form->title(sprintf(gettext("confirm reversion of %s"), $rev));
+ my $patch_contents = IkiWiki::rcs_showpatch(rev => $rev);
+ $form->tmpl_param(patch_contents => encode_entities($patch_contents));
+ $form->field(name => "rev", type => "hidden", value => $rev, force => 1);
+ IkiWiki::showform($form, $buttons, $session, $q);
+ exit 0;
+ }
+
+ IkiWiki::redirect($q, urlto($config{recentchangespage}, ''));
+ exit 0;
+}
+
+# Enable the recentchanges link.
+sub pagetemplate (@) {