2 Bacula® - The Network Backup Solution
4 Copyright (C) 2001-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
31 * Bacula UA authentication. Provides authentication with
34 * Kern Sibbald, June MMI adapted to bat, Jan MMVI
44 /* Commands sent to Director */
45 static char hello[] = "Hello %s calling\n";
47 /* Response from Director */
48 static char OKhello[] = "1000 OK:";
50 /* Forward referenced functions */
53 * Authenticate Director
55 bool DirComm::authenticate_director(JCR *jcr, DIRRES *director, CONRES *cons,
56 char *errmsg, int errmsg_len)
58 BSOCK *dir = jcr->dir_bsock;
59 int tls_local_need = BNET_TLS_NONE;
60 int tls_remote_need = BNET_TLS_NONE;
61 bool tls_authenticate;
62 int compatible = true;
63 char bashed_name[MAX_NAME_LENGTH];
65 TLS_CONTEXT *tls_ctx = NULL;
69 * Send my name to the Director then do authentication
72 bstrncpy(bashed_name, cons->hdr.name, sizeof(bashed_name));
73 bash_spaces(bashed_name);
74 password = cons->password;
76 if (cons->tls_enable) {
77 if (cons->tls_require) {
78 tls_local_need = BNET_TLS_REQUIRED;
80 tls_local_need = BNET_TLS_OK;
83 tls_authenticate = cons->tls_authenticate;
84 tls_ctx = cons->tls_ctx;
86 bstrncpy(bashed_name, "*UserAgent*", sizeof(bashed_name));
87 password = director->password;
89 if (director->tls_enable) {
90 if (director->tls_require) {
91 tls_local_need = BNET_TLS_REQUIRED;
93 tls_local_need = BNET_TLS_OK;
97 tls_authenticate = director->tls_authenticate;
98 tls_ctx = director->tls_ctx;
100 if (tls_authenticate) {
101 tls_local_need = BNET_TLS_REQUIRED;
104 /* Timeout Hello after 15 secs */
105 dir->start_timer(15);
106 dir->fsend(hello, bashed_name);
108 /* respond to Dir challenge */
109 if (!cram_md5_respond(dir, password, &tls_remote_need, &compatible) ||
110 /* Now challenge dir */
111 !cram_md5_challenge(dir, password, tls_local_need, compatible)) {
112 bsnprintf(errmsg, errmsg_len, _("Director authorization problem at \"%s:%d\"\n"),
113 dir->host(), dir->port());
117 /* Verify that the remote host is willing to meet our TLS requirements */
118 if (tls_remote_need < tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) {
119 bsnprintf(errmsg, errmsg_len, _("Authorization problem:"
120 " Remote server at \"%s:%d\" did not advertise required TLS support.\n"),
121 dir->host(), dir->port());
125 /* Verify that we are willing to meet the remote host's requirements */
126 if (tls_remote_need > tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) {
127 bsnprintf(errmsg, errmsg_len, _("Authorization problem with Director at \"%s:%d\":"
128 " Remote server requires TLS.\n"),
129 dir->host(), dir->port());
134 /* Is TLS Enabled? */
135 if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) {
136 /* Engage TLS! Full Speed Ahead! */
137 if (!bnet_tls_client(tls_ctx, dir, NULL)) {
138 bsnprintf(errmsg, errmsg_len, _("TLS negotiation failed with Director at \"%s:%d\"\n"),
139 dir->host(), dir->port());
142 if (tls_authenticate) { /* authenticate only? */
143 dir->free_tls(); /* Yes, shutdown tls */
147 Dmsg1(6, ">dird: %s", dir->msg);
148 if (dir->recv() <= 0) {
150 bsnprintf(errmsg, errmsg_len, _("Bad response to Hello command: ERR=%s\n"
151 "The Director at \"%s:%d\" is probably not running.\n"),
152 dir->bstrerror(), dir->host(), dir->port());
157 Dmsg1(10, "<dird: %s", dir->msg);
158 if (strncmp(dir->msg, OKhello, sizeof(OKhello)-1) != 0) {
159 bsnprintf(errmsg, errmsg_len, _("Director at \"%s:%d\" rejected Hello command\n"),
160 dir->host(), dir->port());
163 bsnprintf(errmsg, errmsg_len, "%s", dir->msg);
169 bsnprintf(errmsg, errmsg_len, _("Authorization problem with Director at \"%s:%d\"\n"
170 "Most likely the passwords do not agree.\n"
171 "If you are using TLS, there may have been a certificate validation error during the TLS handshake.\n"
172 "Please see http://www.bacula.org/en/rel-manual/Bacula_Freque_Asked_Questi.html#SECTION003760000000000000000 for help.\n"),
173 dir->host(), dir->port());