You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

69 lines
2.2 KiB

From eb5ffe2641febe0fa5e9038f2e216c130e1e7519 Mon Sep 17 00:00:00 2001
From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Mon, 21 Jan 2019 11:36:30 +0200
Subject: [PATCH] login-common: Ensure we get username from certificate
---
src/login-common/sasl-server.c | 42 ++++++++++++++++++++++++++++++++--
1 file changed, 40 insertions(+), 2 deletions(-)
diff --git a/src/login-common/sasl-server.c b/src/login-common/sasl-server.c
index a833c9a6d4..9465da9657 100644
--- a/src/login-common/sasl-server.c
+++ b/src/login-common/sasl-server.c
@@ -321,6 +321,37 @@ authenticate_callback(struct auth_client_request *request,
}
}
+static bool get_cert_username(struct client *client, const char **username_r,
+ const char **error_r)
+{
+ /* no SSL */
+ if (client->ssl_proxy == NULL) {
+ *username_r = NULL;
+ return TRUE;
+ }
+
+ /* no client certificate */
+ if (!ssl_proxy_has_valid_client_cert(client->ssl_proxy)) {
+ *username_r = NULL;
+ return TRUE;
+ }
+
+ /* get peer name */
+ const char *username = ssl_proxy_get_peer_name(client->ssl_proxy);
+
+ /* if we wanted peer name, but it was not there, fail */
+ if (client->set->auth_ssl_username_from_cert &&
+ (username == NULL || *username == '\0')) {
+ if (client->set->auth_ssl_require_client_cert) {
+ *error_r = "Missing username in certificate";
+ return FALSE;
+ }
+ }
+
+ *username_r = username;
+ return TRUE;
+}
+
void sasl_server_auth_begin(struct client *client,
const char *service, const char *mech_name,
const char *initial_resp_base64,
@@ -359,8 +390,15 @@ void sasl_server_auth_begin(struct client *client,
info.mech = mech->name;
info.service = service;
info.session_id = client_get_session_id(client);
- info.cert_username = client->ssl_proxy == NULL ? NULL :
- ssl_proxy_get_peer_name(client->ssl_proxy);
+ if (client->set->auth_ssl_username_from_cert) {
+ const char *error;
+ if (!get_cert_username(client, &info.cert_username, &error)) {
+ client_log_err(client, t_strdup_printf("Cannot get username "
+ "from certificate: %s", error));
+ sasl_server_auth_failed(client, "Unable to validate certificate");
+ return;
+ }
+ }
info.flags = client_get_auth_flags(client);
info.local_ip = client->local_ip;
info.remote_ip = client->ip;