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
45 /* Commands sent to Director */
46 static char hello[] = "Hello %s calling\n";
48 /* Response from Director */
49 static char OKhello[] = "1000 OK:";
51 /* Forward referenced functions */
54 * Authenticate Director
56 bool DirComm::authenticate_director(JCR *jcr, DIRRES *director, CONRES *cons,
57 char *errmsg, int errmsg_len)
59 BSOCK *dir = jcr->dir_bsock;
60 int tls_local_need = BNET_TLS_NONE;
61 int tls_remote_need = BNET_TLS_NONE;
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_ctx = cons->tls_ctx;
85 bstrncpy(bashed_name, "*UserAgent*", sizeof(bashed_name));
86 password = director->password;
88 if (director->tls_enable) {
89 if (director->tls_require) {
90 tls_local_need = BNET_TLS_REQUIRED;
92 tls_local_need = BNET_TLS_OK;
96 tls_ctx = director->tls_ctx;
98 /* Timeout Hello after 15 secs */
100 dir->fsend(hello, bashed_name);
102 /* respond to Dir challenge */
103 if (!cram_md5_respond(dir, password, &tls_remote_need, &compatible) ||
104 /* Now challenge dir */
105 !cram_md5_challenge(dir, password, tls_local_need, compatible)) {
106 bsnprintf(errmsg, errmsg_len, _("Director authorization problem at \"%s:%d\"\n"),
107 dir->host(), dir->port());
111 /* Verify that the remote host is willing to meet our TLS requirements */
112 if (tls_remote_need < tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) {
113 bsnprintf(errmsg, errmsg_len, _("Authorization problem:"
114 " Remote server at \"%s:%d\" did not advertise required TLS support.\n"),
115 dir->host(), dir->port());
119 /* Verify that we are willing to meet the remote host's requirements */
120 if (tls_remote_need > tls_local_need && tls_local_need != BNET_TLS_OK && tls_remote_need != BNET_TLS_OK) {
121 bsnprintf(errmsg, errmsg_len, _("Authorization problem with Director at \"%s:%d\":"
122 " Remote server requires TLS.\n"),
123 dir->host(), dir->port());
128 /* Is TLS Enabled? */
130 if (tls_local_need >= BNET_TLS_OK && tls_remote_need >= BNET_TLS_OK) {
131 /* Engage TLS! Full Speed Ahead! */
132 if (!bnet_tls_client(tls_ctx, dir, NULL)) {
133 bsnprintf(errmsg, errmsg_len, _("TLS negotiation failed with Director at \"%s:%d\"\n"),
134 dir->host(), dir->port());
140 Dmsg1(6, ">dird: %s", dir->msg);
141 if (dir->recv() <= 0) {
143 bsnprintf(errmsg, errmsg_len, _("Bad response to Hello command: ERR=%s\n"
144 "The Director at \"%s:%d\" is probably not running.\n"),
145 dir->bstrerror(), dir->host(), dir->port());
150 Dmsg1(10, "<dird: %s", dir->msg);
151 if (strncmp(dir->msg, OKhello, sizeof(OKhello)-1) != 0) {
152 bsnprintf(errmsg, errmsg_len, _("Director at \"%s:%d\" rejected Hello command\n"),
153 dir->host(), dir->port());
156 bsnprintf(errmsg, errmsg_len, "%s", dir->msg);
162 bsnprintf(errmsg, errmsg_len, _("Authorization problem with Director at \"%s:%d\"\n"
163 "Most likely the passwords do not agree.\n"
164 "If you are using TLS, there may have been a certificate validation error during the TLS handshake.\n"
165 "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"),
166 dir->host(), dir->port());