The following patch fixes CN maximum length as discussed with Steffan Kargen at openvpn users mailing list.
Signed-off-by: Jorge Peixoto <jorgepeix...@gmail.com> --- src/openvpn/ssl_verify.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/openvpn/ssl_verify.c b/src/openvpn/ssl_verify.c index ad50458..73488fc 100644 --- a/src/openvpn/ssl_verify.c +++ b/src/openvpn/ssl_verify.c @@ -47,7 +47,7 @@ #endif /** Maximum length of common name */ -#define TLS_USERNAME_LEN 64 +#define TLS_USERNAME_LEN 65 /** Legal characters in an X509 name with --compat-names */ #define X509_NAME_CHAR_CLASS (CC_ALNUM|CC_UNDERBAR|CC_DASH|CC_DOT|CC_AT|CC_SLASH|CC_COLON|CC_EQUAL) @@ -625,7 +625,7 @@ verify_cert(struct tls_session *session, openvpn_x509_cert_t *cert, int cert_dep "limited to %d characters", opt->x509_username_field, subject, - TLS_USERNAME_LEN); + TLS_USERNAME_LEN-1); goto cleanup; } } @@ -1165,7 +1165,7 @@ verify_user_pass(struct user_pass *up, struct tls_multi *multi, /* check sizing of username if it will become our common name */ if ((session->opt->ssl_flags & SSLF_USERNAME_AS_COMMON_NAME) && strlen (up->username) >= TLS_USERNAME_LEN) { - msg (D_TLS_ERRORS, "TLS Auth Error: --username-as-common name specified and username is longer than the maximum permitted Common Name length of %d characters", TLS_USERNAME_LEN); + msg (D_TLS_ERRORS, "TLS Auth Error: --username-as-common name specified and username is longer than the maximum permitted Common Name length of %d characters", TLS_USERNAME_LEN-1); s1 = OPENVPN_PLUGIN_FUNC_ERROR; } -- 1.9.1