/*
- Bacula® - The Network Backup Solution
+ Bacula(R) - The Network Backup Solution
- Copyright (C) 2001-2007 Free Software Foundation Europe e.V.
+ Copyright (C) 2000-2016 Kern Sibbald
- The main author of Bacula is Kern Sibbald, with contributions from
- many others, a complete list can be found in the file AUTHORS.
- This program is Free Software; you can redistribute it and/or
- modify it under the terms of version two of the GNU General Public
- License as published by the Free Software Foundation and included
- in the file LICENSE.
+ The original author of Bacula is Kern Sibbald, with contributions
+ from many others, a complete list can be found in the file AUTHORS.
- 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 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.
- 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., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA.
+ This notice must be preserved when any source code is
+ conveyed and/or propagated.
- Bacula® is a registered trademark of John Walker.
- The licensor of Bacula is the Free Software Foundation Europe
- (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
- Switzerland, email:ftf@fsfeurope.org.
+ Bacula(R) is a registered trademark of Kern Sibbald.
*/
/*
* Challenge Response Authentication Method using MD5 (CRAM-MD5)
*
* Written for Bacula by Kern E. Sibbald, May MMI.
*
- * Version $Id$
*/
#include "bacula.h"
+const int dbglvl = 50;
+
+
/* Authorize other end
* Codes that tls_local_need and tls_remote_need can take:
* BNET_TLS_NONE I cannot do tls
/* Send challenge -- no hashing yet */
bsnprintf(chal, sizeof(chal), "<%u.%u@%s>", (uint32_t)random(), (uint32_t)time(NULL), host);
if (compatible) {
- Dmsg2(50, "send: auth cram-md5 %s ssl=%d\n", chal, tls_local_need);
+ Dmsg2(dbglvl, "send: auth cram-md5 challenge %s ssl=%d\n", chal, tls_local_need);
if (!bs->fsend("auth cram-md5 %s ssl=%d\n", chal, tls_local_need)) {
- Dmsg1(50, "Bnet send challenge error.\n", bs->bstrerror());
+ Dmsg1(dbglvl, "Send challenge comm error. ERR=%s\n", bs->bstrerror());
return false;
}
} else {
/* Old non-compatible system */
- Dmsg2(50, "send: auth cram-md5 %s ssl=%d\n", chal, tls_local_need);
+ Dmsg2(dbglvl, "send: auth cram-md5 challenge %s ssl=%d\n", chal, tls_local_need);
if (!bs->fsend("auth cram-md5 %s ssl=%d\n", chal, tls_local_need)) {
- Dmsg1(50, "Bnet send challenge error.\n", bs->bstrerror());
+ Dmsg1(dbglvl, "Send challenge comm error. ERR=%s\n", bs->bstrerror());
return false;
}
}
/* Read hashed response to challenge */
if (bs->wait_data(180) <= 0 || bs->recv() <= 0) {
- Dmsg1(50, "Bnet receive challenge response error.\n", bs->bstrerror());
+ Dmsg1(dbglvl, "Receive cram-md5 response comm error. ERR=%s\n", bs->bstrerror());
bmicrosleep(5, 0);
return false;
}
bin_to_base64(host, sizeof(host), (char *)hmac, 16, compatible);
ok = strcmp(bs->msg, host) == 0;
if (ok) {
- Dmsg1(50, "Authenticate OK %s\n", host);
+ Dmsg1(dbglvl, "Authenticate OK %s\n", host);
} else {
- bin_to_base64(host, sizeof(host), (char *)hmac, 16, false);
+ bin_to_base64(host, sizeof(host), (char *)hmac, 16, false);
ok = strcmp(bs->msg, host) == 0;
if (!ok) {
- Dmsg2(50, "Authenticate NOT OK: wanted %s, got %s\n", host, bs->msg);
+ Dmsg2(dbglvl, "Authenticate NOT OK: wanted %s, got %s\n", host, bs->msg);
}
}
if (ok) {
bs->fsend("1000 OK auth\n");
} else {
- Dmsg1(50, "Auth failed PW: %s\n", password);
bs->fsend(_("1999 Authorization failed.\n"));
bmicrosleep(5, 0);
}
return false;
}
if (bs->msglen >= MAXSTRING) {
- Dmsg1(50, "Msg too long wanted auth cram... Got: %s", bs->msg);
+ Dmsg1(dbglvl, "Msg too long wanted auth cram... Got: %s", bs->msg);
bmicrosleep(5, 0);
return false;
}
- Dmsg1(100, "cram-get: %s", bs->msg);
+ Dmsg1(100, "cram-get received: %s", bs->msg);
+ /*
+ * Note that the next call is only to keep compatibility with very
+ * old versions of Bacula that used a non-compatible base64 algorithm.
+ */
if (sscanf(bs->msg, "auth cram-md5c %s ssl=%d", chal, tls_remote_need) == 2) {
*compatible = true;
} else if (sscanf(bs->msg, "auth cram-md5 %s ssl=%d", chal, tls_remote_need) != 2) {
if (sscanf(bs->msg, "auth cram-md5 %s\n", chal) != 1) {
- Dmsg1(50, "Cannot scan challenge: %s", bs->msg);
+ Dmsg1(dbglvl, "Cannot scan received response to challenge: %s", bs->msg);
bs->fsend(_("1999 Authorization failed.\n"));
bmicrosleep(5, 0);
return false;
hmac_md5((uint8_t *)chal, strlen(chal), (uint8_t *)password, strlen(password), hmac);
bs->msglen = bin_to_base64(bs->msg, 50, (char *)hmac, 16, *compatible) + 1;
+// Don't turn the following on except for local debugging -- security
// Dmsg3(100, "get_auth: chal=%s pw=%s hmac=%s\n", chal, password, bs->msg);
if (!bs->send()) {
- Dmsg1(50, "Send challenge failed. ERR=%s\n", bs->bstrerror());
+ Dmsg1(dbglvl, "Send challenge failed. ERR=%s\n", bs->bstrerror());
return false;
}
Dmsg1(99, "sending resp to challenge: %s\n", bs->msg);
if (bs->wait_data(180) <= 0 || bs->recv() <= 0) {
- Dmsg1(50, "Receive chanllenge response failed. ERR=%s\n", bs->bstrerror());
+ Dmsg1(dbglvl, "Receive cram-md5 response failed. ERR=%s\n", bs->bstrerror());
bmicrosleep(5, 0);
return false;
}
if (strcmp(bs->msg, "1000 OK auth\n") == 0) {
return true;
}
- Dmsg1(50, "Bad auth response: %s\n", bs->msg);
+ Dmsg1(dbglvl, "Received bad response: %s\n", bs->msg);
bmicrosleep(5, 0);
return false;
}
projects / bacula / bacula / blobdiff