support of 'none' in file-provisioning:
the default authentication method is set to NONE

support of 'none' in mbpi:
the default method remains CHAP, but it is overridden by NONE after
parsing the entire key for the apn and detecting no username/password
---
 plugins/file-provision.c | 7 +++++--
 plugins/mbpi.c           | 6 ++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/plugins/file-provision.c b/plugins/file-provision.c
index d4846a65..3a1a5a68 100644
--- a/plugins/file-provision.c
+++ b/plugins/file-provision.c
@@ -93,18 +93,21 @@ static int config_file_provision_get_settings(const char *mcc,
 	if (value != NULL)
 		(*settings)[0].password = value;
 
-	(*settings)[0].auth_method = OFONO_GPRS_AUTH_METHOD_CHAP;
+	/* select default authentication method */
+	(*settings)[0].auth_method = OFONO_GPRS_AUTH_METHOD_NONE;
+
 	value = g_key_file_get_string(key_file, setting_group,
 					"internet.AuthenticationMethod", NULL);
 
 	if (value != NULL) {
+
 		if (g_strcmp0(value, "chap") == 0)
 			(*settings)[0].auth_method =
 						OFONO_GPRS_AUTH_METHOD_CHAP;
 		else if (g_strcmp0(value, "pap") == 0)
 			(*settings)[0].auth_method =
 						OFONO_GPRS_AUTH_METHOD_PAP;
-		else
+		else if (g_strcmp0(value, "none") != 0)
 			DBG("Unknown auth method: %s", value);
 
 		g_free(value);
diff --git a/plugins/mbpi.c b/plugins/mbpi.c
index ae92c762..433f1b55 100644
--- a/plugins/mbpi.c
+++ b/plugins/mbpi.c
@@ -325,6 +325,8 @@ static void apn_handler(GMarkupParseContext *context, struct gsm_data *gsm,
 	ap->apn = g_strdup(apn);
 	ap->type = OFONO_GPRS_CONTEXT_TYPE_INTERNET;
 	ap->proto = OFONO_GPRS_PROTO_IP;
+
+	/* pre-select default authentication method */
 	ap->auth_method = OFONO_GPRS_AUTH_METHOD_CHAP;
 
 	g_markup_parse_context_push(context, &apn_parser, ap);
@@ -395,6 +397,10 @@ static void gsm_end(GMarkupParseContext *context, const gchar *element_name,
 	if (ap == NULL)
 		return;
 
+	/* select authentication method NONE if fit */
+	if (!ap->username || !ap->password)
+		ap->auth_method = OFONO_GPRS_AUTH_METHOD_NONE;
+
 	if (gsm->allow_duplicates == FALSE) {
 		GSList *l;
 
-- 
2.17.1