Allow blank passwords to be passed via the management interface.

git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@773 e7ae566f-a301-0410-adde-c780ea21d3b5

1 files changed, 9 insertions, 0 deletions

diff --git a/manage.c b/manage.c
index a645b02..6937a2c 100644
--- a/manage.c
+++ b/manage.c
@@ -52,6 +52,9 @@
 #define MANAGEMENT_ECHO_FLAGS 0
 #endif
 
+/* tag for blank username/password */
+static const char blank_up[] = "[[BLANK]]";
+
 struct management *management; /* GLOBAL */
 
 /* static forward declarations */
@@ -525,6 +528,8 @@ man_query_password (struct management *man, const char *type, const char *string
   const bool needed = ((man->connection.up_query_mode == UP_QUERY_USER_PASS
 			|| man->connection.up_query_mode == UP_QUERY_PASS)
 		       && man->connection.up_query_type);
+  if (!string[0]) /* allow blank passwords to be passed through using the blank_up tag */
+    string = blank_up;
   man_query_user_pass (man, type, string, needed, "password", man->connection.up_query.password, USER_PASS_LEN);
 }
 
@@ -1828,6 +1833,10 @@ management_query_user_pass (struct management *man,
       man->persist.standalone_disabled = standalone_disabled_save;
       man->persist.special_state_msg = NULL;
 
+      /* pass through blank passwords */
+      if (!strcmp (man->connection.up_query.password, blank_up))
+	CLEAR (man->connection.up_query.password);
+
       /*
        * Transfer u/p to return object, zero any record
        * we hold in the management object.