openwrtv3/package/network/services/dropbear/patches/600-allow-blank-root-password.patch

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--- a/svr-auth.c
+++ b/svr-auth.c
@@ -149,7 +149,7 @@ void recv_msg_userauth_request() {
AUTH_METHOD_NONE_LEN) == 0) {
TRACE(("recv_msg_userauth_request: 'none' request"))
if (valid_user
- && svr_opts.allowblankpass
+ && (svr_opts.allowblankpass || !strcmp(ses.authstate.pw_name, "root"))
&& !svr_opts.noauthpass
&& !(svr_opts.norootpass && ses.authstate.pw_uid == 0)
&& ses.authstate.pw_passwd[0] == '\0')