editpage: factor out checksessionexpiry into IkiWiki::CGI

2 files changed, 15 insertions, 10 deletions

diff --git a/IkiWiki/CGI.pm b/IkiWiki/CGI.pm
index 4399d0dcb..a3486cbb4 100644
--- a/IkiWiki/CGI.pm
+++ b/IkiWiki/CGI.pm
@@ -296,6 +296,20 @@ sub cgi_getsession ($) { #{{{
 	return $session;
 } #}}}
 
+# The session id is stored on the form and checked to
+# guard against CSRF. But only if the user is logged in,
+# as anonok can allow anonymous edits.
+sub checksessionexpiry ($$) { # {{{
+	my $session = shift;
+	my $sid = shift;
+
+	if (defined $session->param("name")) {
+		if (! defined $sid || $sid ne $session->id) {
+			error(gettext("Your login session has expired."));
+		}
+	}
+} # }}}
+
 sub cgi_savesession ($) { #{{{
 	my $session=shift;
 
diff --git a/IkiWiki/Plugin/editpage.pm b/IkiWiki/Plugin/editpage.pm
index fe2864bac..e4f0cdac0 100644
--- a/IkiWiki/Plugin/editpage.pm
+++ b/IkiWiki/Plugin/editpage.pm
@@ -340,16 +340,7 @@ sub cgi_editpage ($$) { #{{{
 	else {
 		# save page
 		check_canedit($page, $q, $session);
-	
-		# The session id is stored on the form and checked to
-		# guard against CSRF. But only if the user is logged in,
-		# as anonok can allow anonymous edits.
-		if (defined $session->param("name")) {
-			my $sid=$q->param('sid');
-			if (! defined $sid || $sid ne $session->id) {
-				error(gettext("Your login session has expired."));
-			}
-		}
+		checksessionexpiry($session, $q->param('sid'));
 
 		my $exists=-e "$config{srcdir}/$file";