Check "auth event notification" param in log_json
[nivanova/samba-autobuild/.git] / auth / ntlmssp / gensec_ntlmssp_server.c
1 /*
2    Unix SMB/Netbios implementation.
3    Version 3.0
4    handle NLTMSSP, client server side parsing
5
6    Copyright (C) Andrew Tridgell      2001
7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2005
8    Copyright (C) Stefan Metzmacher 2005
9
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 3 of the License, or
13    (at your option) any later version.
14
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19
20    You should have received a copy of the GNU General Public License
21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25 #include "system/network.h"
26 #include "lib/tsocket/tsocket.h"
27 #include "auth/ntlmssp/ntlmssp.h"
28 #include "../librpc/gen_ndr/ndr_ntlmssp.h"
29 #include "auth/ntlmssp/ntlmssp_ndr.h"
30 #include "auth/ntlmssp/ntlmssp_private.h"
31 #include "../libcli/auth/libcli_auth.h"
32 #include "../lib/crypto/crypto.h"
33 #include "auth/gensec/gensec.h"
34 #include "auth/gensec/gensec_internal.h"
35 #include "auth/common_auth.h"
36 #include "param/param.h"
37 #include "param/loadparm.h"
38 #include "libds/common/roles.h"
39
40 #undef DBGC_CLASS
41 #define DBGC_CLASS DBGC_AUTH
42
43 /**
44  * Return the credentials of a logged on user, including session keys
45  * etc.
46  *
47  * Only valid after a successful authentication
48  *
49  * May only be called once per authentication.
50  *
51  */
52
53 NTSTATUS gensec_ntlmssp_session_info(struct gensec_security *gensec_security,
54                                      TALLOC_CTX *mem_ctx,
55                                      struct auth_session_info **session_info)
56 {
57         NTSTATUS nt_status;
58         struct gensec_ntlmssp_context *gensec_ntlmssp =
59                 talloc_get_type_abort(gensec_security->private_data,
60                                       struct gensec_ntlmssp_context);
61         uint32_t session_info_flags = 0;
62
63         if (gensec_security->want_features & GENSEC_FEATURE_UNIX_TOKEN) {
64                 session_info_flags |= AUTH_SESSION_INFO_UNIX_TOKEN;
65         }
66
67         session_info_flags |= AUTH_SESSION_INFO_DEFAULT_GROUPS;
68         session_info_flags |= AUTH_SESSION_INFO_NTLM;
69
70         if (gensec_security->auth_context && gensec_security->auth_context->generate_session_info) {
71                 nt_status = gensec_security->auth_context->generate_session_info(gensec_security->auth_context, mem_ctx, 
72                                                                                  gensec_ntlmssp->server_returned_info,
73                                                                                  gensec_ntlmssp->ntlmssp_state->user,
74                                                                                  session_info_flags,
75                                                                                  session_info);
76         } else {
77                 DEBUG(0, ("Cannot generate a session_info without the auth_context\n"));
78                 return NT_STATUS_INTERNAL_ERROR;
79         }
80
81         NT_STATUS_NOT_OK_RETURN(nt_status);
82
83         nt_status = gensec_ntlmssp_session_key(gensec_security, *session_info,
84                                                &(*session_info)->session_key);
85         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_USER_SESSION_KEY)) {
86                 (*session_info)->session_key = data_blob_null;
87                 nt_status = NT_STATUS_OK;
88         }
89
90         return nt_status;
91 }
92
93 /**
94  * Start NTLMSSP on the server side
95  *
96  */
97 NTSTATUS gensec_ntlmssp_server_start(struct gensec_security *gensec_security)
98 {
99         NTSTATUS nt_status;
100         struct ntlmssp_state *ntlmssp_state;
101         struct gensec_ntlmssp_context *gensec_ntlmssp;
102         const char *netbios_name;
103         const char *netbios_domain;
104         const char *dns_name;
105         const char *dns_domain;
106         enum server_role role;
107
108         role = lpcfg_server_role(gensec_security->settings->lp_ctx);
109
110         nt_status = gensec_ntlmssp_start(gensec_security);
111         NT_STATUS_NOT_OK_RETURN(nt_status);
112
113         gensec_ntlmssp =
114                 talloc_get_type_abort(gensec_security->private_data,
115                                       struct gensec_ntlmssp_context);
116
117         ntlmssp_state = talloc_zero(gensec_ntlmssp,
118                                     struct ntlmssp_state);
119         if (!ntlmssp_state) {
120                 return NT_STATUS_NO_MEMORY;
121         }
122         gensec_ntlmssp->ntlmssp_state = ntlmssp_state;
123
124         ntlmssp_state->role = NTLMSSP_SERVER;
125
126         ntlmssp_state->expected_state = NTLMSSP_NEGOTIATE;
127
128         ntlmssp_state->allow_lm_response =
129                 lpcfg_lanman_auth(gensec_security->settings->lp_ctx);
130
131         if (ntlmssp_state->allow_lm_response &&
132             gensec_setting_bool(gensec_security->settings,
133                                 "ntlmssp_server", "allow_lm_key", false))
134         {
135                 ntlmssp_state->allow_lm_key = true;
136         }
137
138         ntlmssp_state->force_old_spnego = false;
139
140         if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "force_old_spnego", false)) {
141                 /*
142                  * For testing Windows 2000 mode
143                  */
144                 ntlmssp_state->force_old_spnego = true;
145         }
146
147         ntlmssp_state->neg_flags =
148                 NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_VERSION;
149
150         if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "128bit", true)) {
151                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_128;
152         }
153
154         if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "56bit", true)) {
155                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_56;
156         }
157
158         if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "keyexchange", true)) {
159                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
160         }
161
162         if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "alwayssign", true)) {
163                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
164         }
165
166         if (gensec_setting_bool(gensec_security->settings, "ntlmssp_server", "ntlm2", true)) {
167                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
168         }
169
170         if (ntlmssp_state->allow_lm_key) {
171                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
172         }
173
174         /*
175          * We always allow NTLMSSP_NEGOTIATE_SIGN and NTLMSSP_NEGOTIATE_SEAL.
176          *
177          * These will be removed if the client doesn't want them.
178          */
179         ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
180         ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
181
182         if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
183                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
184         }
185         if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
186                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
187
188                 if (gensec_security->want_features & GENSEC_FEATURE_LDAP_STYLE) {
189                         /*
190                          * We need to handle NTLMSSP_NEGOTIATE_SIGN as
191                          * NTLMSSP_NEGOTIATE_SEAL if GENSEC_FEATURE_LDAP_STYLE
192                          * is requested.
193                          */
194                         ntlmssp_state->force_wrap_seal = true;
195                 }
196         }
197         if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
198                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
199                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
200         }
201
202         if (role == ROLE_STANDALONE) {
203                 ntlmssp_state->server.is_standalone = true;
204         } else {
205                 ntlmssp_state->server.is_standalone = false;
206         }
207
208         if (gensec_security->settings->server_netbios_name) {
209                 netbios_name = gensec_security->settings->server_netbios_name;
210         } else {
211                 netbios_name = lpcfg_netbios_name(gensec_security->settings->lp_ctx);
212         }
213
214         if (gensec_security->settings->server_netbios_domain) {
215                 netbios_domain = gensec_security->settings->server_netbios_domain;
216         } else {
217                 netbios_domain = lpcfg_workgroup(gensec_security->settings->lp_ctx);
218         }
219
220         if (gensec_security->settings->server_dns_name) {
221                 dns_name = gensec_security->settings->server_dns_name;
222         } else {
223                 const char *dnsdomain = lpcfg_dnsdomain(gensec_security->settings->lp_ctx);
224                 char *lower_netbiosname;
225
226                 lower_netbiosname = strlower_talloc(ntlmssp_state, netbios_name);
227                 NT_STATUS_HAVE_NO_MEMORY(lower_netbiosname);
228
229                 /* Find out the DNS host name */
230                 if (dnsdomain && dnsdomain[0] != '\0') {
231                         dns_name = talloc_asprintf(ntlmssp_state, "%s.%s",
232                                                    lower_netbiosname,
233                                                    dnsdomain);
234                         talloc_free(lower_netbiosname);
235                         NT_STATUS_HAVE_NO_MEMORY(dns_name);
236                 } else {
237                         dns_name = lower_netbiosname;
238                 }
239         }
240
241         if (gensec_security->settings->server_dns_domain) {
242                 dns_domain = gensec_security->settings->server_dns_domain;
243         } else {
244                 dns_domain = lpcfg_dnsdomain(gensec_security->settings->lp_ctx);
245         }
246
247         ntlmssp_state->server.netbios_name = talloc_strdup(ntlmssp_state, netbios_name);
248         NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.netbios_name);
249
250         ntlmssp_state->server.netbios_domain = talloc_strdup(ntlmssp_state, netbios_domain);
251         NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.netbios_domain);
252
253         ntlmssp_state->server.dns_name = talloc_strdup(ntlmssp_state, dns_name);
254         NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.dns_name);
255
256         ntlmssp_state->server.dns_domain = talloc_strdup(ntlmssp_state, dns_domain);
257         NT_STATUS_HAVE_NO_MEMORY(ntlmssp_state->server.dns_domain);
258
259         ntlmssp_state->neg_flags |= ntlmssp_state->required_flags;
260         ntlmssp_state->conf_flags = ntlmssp_state->neg_flags;
261
262         return NT_STATUS_OK;
263 }
264