+/*
+ Bacula(R) - The Network Backup Solution
+
+ Copyright (C) 2000-2015 Kern Sibbald
+
+ The original author of Bacula is Kern Sibbald, with contributions
+ from many others, a complete list can be found in the file AUTHORS.
+
+ You may use this file and others of this release according to the
+ license defined in the LICENSE file, which includes the Affero General
+ Public License, v3.0 ("AGPLv3") and some additional permissions and
+ terms pursuant to its AGPLv3 Section 7.
+
+ This notice must be preserved when any source code is
+ conveyed and/or propagated.
+
+ Bacula(R) is a registered trademark of Kern Sibbald.
+*/
/*
*
* Bacula UA authentication. Provides authentication with
* Basic tasks done here:
*
*/
-/*
- Copyright (C) 2001-2004 Kern Sibbald and John Walker
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public
- License along with this program; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
- */
#include "bacula.h"
#include "console_conf.h"
-#include "jcr.h"
+/*
+ * Version at end of Hello
+ * prior to 06Aug13 no version
+ */
+#define UA_VERSION 100
void senditf(const char *fmt, ...);
-void sendit(const char *buf);
+void sendit(const char *buf);
/* Commands sent to Director */
-static char hello[] = "Hello %s calling\n";
+static char hello[] = "Hello %s calling %d\n";
/* Response from Director */
-static char OKhello[] = "1000 OK:";
+static char oldOKhello[] = "1000 OK:";
+static char newOKhello[] = "1000 OK: %d";
/* Forward referenced functions */
/*
* Authenticate Director
*/
-int authenticate_director(JCR *jcr, DIRRES *director, CONRES *cons)
+int authenticate_director(BSOCK *dir, DIRRES *director, CONRES *cons)
{
- BSOCK *dir = jcr->dir_bsock;
- int ssl_need = BNET_SSL_NONE;
+ int tls_local_need = BNET_TLS_NONE;
+ int tls_remote_need = BNET_TLS_NONE;
+ bool tls_authenticate;
+ int compatible = true;
+ int dir_version = 0;
char bashed_name[MAX_NAME_LENGTH];
char *password;
+ TLS_CONTEXT *tls_ctx = NULL;
- /*
+ /*
* Send my name to the Director then do authentication
*/
if (cons) {
bstrncpy(bashed_name, cons->hdr.name, sizeof(bashed_name));
bash_spaces(bashed_name);
password = cons->password;
+ /* TLS Requirement */
+ if (cons->tls_enable) {
+ if (cons->tls_require) {
+ tls_local_need = BNET_TLS_REQUIRED;
+ } else {
+ tls_local_need = BNET_TLS_OK;
+ }
+ }
+ if (cons->tls_authenticate) {
+ tls_local_need = BNET_TLS_REQUIRED;
+ }
+ tls_authenticate = cons->tls_authenticate;
+ tls_ctx = cons->tls_ctx;
} else {
bstrncpy(bashed_name, "*UserAgent*", sizeof(bashed_name));
password = director->password;
+ /* TLS Requirement */
+ if (director->tls_enable) {
+ if (director->tls_require) {
+ tls_local_need = BNET_TLS_REQUIRED;
+ } else {
+ tls_local_need = BNET_TLS_OK;
+ }
+ }
+
+ if (director->tls_authenticate) {
+ tls_local_need = BNET_TLS_REQUIRED;
+ }
+ tls_authenticate = director->tls_authenticate;
+ tls_ctx = director->tls_ctx;
+ }
+
+
+ /* Timeout Hello after 15 secs */
+ btimer_t *tid = start_bsock_timer(dir, 15);
+ dir->fsend(hello, bashed_name, UA_VERSION);
+
+ if (!cram_md5_respond(dir, password, &tls_remote_need, &compatible) ||
+ !cram_md5_challenge(dir, password, tls_local_need, compatible)) {
+ goto bail_out;
+ }
+
+ /* Verify that the remote host is willing to meet our TLS requirements */
+ if (tls_remote_need < tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) {
+ sendit(_("Authorization problem:"
+ " Remote server did not advertise required TLS support.\n"));
+ goto bail_out;
}
- /* Timeout Hello after 5 mins */
- btimer_t *tid = start_bsock_timer(dir, 60 * 5);
- bnet_fsend(dir, hello, bashed_name);
-
- if (!cram_md5_get_auth(dir, password, ssl_need) ||
- !cram_md5_auth(dir, password, ssl_need)) {
- stop_bsock_timer(tid);
- sendit( _("Director authorization problem.\n"
- "Most likely the passwords do not agree.\n"));
- return 0;
+
+ /* Verify that we are willing to meet the remote host's requirements */
+ if (tls_remote_need > tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) {
+ sendit(_("Authorization problem:"
+ " Remote server requires TLS.\n"));
+ goto bail_out;
+ }
+
+ /* Is TLS Enabled? */
+ if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) {
+ /* Engage TLS! Full Speed Ahead! */
+ if (!bnet_tls_client(tls_ctx, dir, NULL)) {
+ sendit(_("TLS negotiation failed\n"));
+ goto bail_out;
+ }
+ if (tls_authenticate) { /* Authenticate only? */
+ dir->free_tls(); /* yes, shutdown tls */
+ }
}
+ /*
+ * It's possible that the TLS connection will
+ * be dropped here if an invalid client certificate was presented
+ */
Dmsg1(6, ">dird: %s", dir->msg);
- if (bnet_recv(dir) <= 0) {
- stop_bsock_timer(tid);
+ if (dir->recv() <= 0) {
senditf(_("Bad response to Hello command: ERR=%s\n"),
- bnet_strerror(dir));
- return 0;
+ dir->bstrerror());
+ goto bail_out;
}
+
Dmsg1(10, "<dird: %s", dir->msg);
- stop_bsock_timer(tid);
- if (strncmp(dir->msg, OKhello, sizeof(OKhello)-1) != 0) {
+ if (strncmp(dir->msg, oldOKhello, sizeof(oldOKhello)-1) != 0) {
sendit(_("Director rejected Hello command\n"));
- return 0;
+ goto bail_out;
} else {
+ /* If Dir version exists, get it */
+ sscanf(dir->msg, newOKhello, &dir_version);
sendit(dir->msg);
}
+ stop_bsock_timer(tid);
return 1;
+
+bail_out:
+ stop_bsock_timer(tid);
+ sendit( _("Director authorization problem.\n"
+ "Most likely the passwords do not agree.\n"
+ "If you are using TLS, there may have been a certificate validation error during the TLS handshake.\n"
+ "For help, please see " MANUAL_AUTH_URL "\n"));
+ return 0;
}
projects / bacula / bacula / blobdiff