Merge 2610c05b5b95cc7036b3d6dfb894c6cfbdb68483 as Samba-4.0alpha16
[sfrench/samba-autobuild/.git] / source4 / auth / auth.h
1 /*
2    Unix SMB/CIFS implementation.
3    Standardised Authentication types
4    Copyright (C) Andrew Bartlett   2001
5    Copyright (C) Stefan Metzmacher 2005
6
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16
17    You should have received a copy of the GNU General Public License
18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #ifndef _SAMBA_AUTH_H
22 #define _SAMBA_AUTH_H
23
24 #include "librpc/gen_ndr/ndr_krb5pac.h"
25 #include "librpc/gen_ndr/auth.h"
26 #include "../auth/common_auth.h"
27
28 extern const char *krbtgt_attrs[];
29 extern const char *server_attrs[];
30 extern const char *user_attrs[];
31
32 union netr_Validation;
33 struct netr_SamBaseInfo;
34 struct netr_SamInfo3;
35 struct loadparm_context;
36
37 /* modules can use the following to determine if the interface has changed
38  * please increment the version number after each interface change
39  * with a comment and maybe update struct auth_critical_sizes.
40  */
41 /* version 1 - version from samba 3.0 - metze */
42 /* version 2 - initial samba4 version - metze */
43 /* version 3 - subsequent samba4 version - abartlet */
44 /* version 4 - subsequent samba4 version - metze */
45 /* version 0 - till samba4 is stable - metze */
46 #define AUTH4_INTERFACE_VERSION 0
47
48 #define AUTH_SESSION_INFO_DEFAULT_GROUPS     0x01 /* Add the user to the default world and network groups */
49 #define AUTH_SESSION_INFO_AUTHENTICATED      0x02 /* Add the user to the 'authenticated users' group */
50 #define AUTH_SESSION_INFO_SIMPLE_PRIVILEGES  0x04 /* Use a trivial map between users and privilages, rather than a DB */
51
52 struct auth_method_context;
53 struct auth_check_password_request;
54 struct auth4_context;
55 struct auth_session_info;
56 struct ldb_dn;
57
58 struct auth_operations {
59         const char *name;
60
61         /* If you are using this interface, then you are probably
62          * getting something wrong.  This interface is only for
63          * security=server, and makes a number of compromises to allow
64          * that.  It is not compatible with being a PDC.  */
65
66         NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8]);
67
68         /* Given the user supplied info, check if this backend want to handle the password checking */
69
70         NTSTATUS (*want_check)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
71                                const struct auth_usersupplied_info *user_info);
72
73         /* Given the user supplied info, check a password */
74
75         NTSTATUS (*check_password)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
76                                    const struct auth_usersupplied_info *user_info,
77                                    struct auth_user_info_dc **interim_info);
78
79         /* Lookup a 'session info interim' return based only on the principal or DN */
80         NTSTATUS (*get_user_info_dc_principal)(TALLOC_CTX *mem_ctx,
81                                                        struct auth4_context *auth_context,
82                                                        const char *principal,
83                                                        struct ldb_dn *user_dn,
84                                                        struct auth_user_info_dc **interim_info);
85 };
86
87 struct auth_method_context {
88         struct auth_method_context *prev, *next;
89         struct auth4_context *auth_ctx;
90         const struct auth_operations *ops;
91         int depth;
92         void *private_data;
93 };
94
95 struct auth4_context {
96         struct {
97                 /* Who set this up in the first place? */
98                 const char *set_by;
99
100                 bool may_be_modified;
101
102                 DATA_BLOB data;
103         } challenge;
104
105         /* methods, in the order they should be called */
106         struct auth_method_context *methods;
107
108         /* the event context to use for calls that can block */
109         struct tevent_context *event_ctx;
110
111         /* the messaging context which can be used by backends */
112         struct imessaging_context *msg_ctx;
113
114         /* loadparm context */
115         struct loadparm_context *lp_ctx;
116
117         /* SAM database for this local machine - to fill in local groups, or to authenticate local NTLM users */
118         struct ldb_context *sam_ctx;
119
120         NTSTATUS (*check_password)(struct auth4_context *auth_ctx,
121                                    TALLOC_CTX *mem_ctx,
122                                    const struct auth_usersupplied_info *user_info,
123                                    struct auth_user_info_dc **user_info_dc);
124
125         NTSTATUS (*get_challenge)(struct auth4_context *auth_ctx, uint8_t chal[8]);
126
127         bool (*challenge_may_be_modified)(struct auth4_context *auth_ctx);
128
129         NTSTATUS (*set_challenge)(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by);
130
131         NTSTATUS (*get_user_info_dc_principal)(TALLOC_CTX *mem_ctx,
132                                                        struct auth4_context *auth_ctx,
133                                                        const char *principal,
134                                                        struct ldb_dn *user_dn,
135                                                        struct auth_user_info_dc **user_info_dc);
136
137         NTSTATUS (*generate_session_info)(TALLOC_CTX *mem_ctx,
138                                           struct auth4_context *auth_context,
139                                           struct auth_user_info_dc *user_info_dc,
140                                           uint32_t session_info_flags,
141                                           struct auth_session_info **session_info);
142 };
143
144 /* this structure is used by backends to determine the size of some critical types */
145 struct auth_critical_sizes {
146         int interface_version;
147         int sizeof_auth_operations;
148         int sizeof_auth_methods;
149         int sizeof_auth_context;
150         int sizeof_auth_usersupplied_info;
151         int sizeof_auth_user_info_dc;
152 };
153
154  NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth4_context *auth_context,
155                            enum auth_password_state to_state,
156                            const struct auth_usersupplied_info *user_info_in,
157                            const struct auth_usersupplied_info **user_info_encrypted);
158
159 #include "auth/session.h"
160 #include "auth/system_session_proto.h"
161 #include "libcli/security/security.h"
162
163 struct ldb_message;
164 struct ldb_context;
165 struct gensec_security;
166 struct cli_credentials;
167
168 NTSTATUS auth_get_challenge(struct auth4_context *auth_ctx, uint8_t chal[8]);
169 NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
170                             struct ldb_context *sam_ctx,
171                             uint32_t logon_parameters,
172                             struct ldb_dn *domain_dn,
173                             struct ldb_message *msg,
174                             const char *logon_workstation,
175                             const char *name_for_logs,
176                             bool allow_domain_trust,
177                             bool password_change);
178
179 struct auth_session_info *system_session(struct loadparm_context *lp_ctx);
180 NTSTATUS authsam_make_user_info_dc(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
181                                            const char *netbios_name,
182                                            const char *domain_name,
183                                            struct ldb_dn *domain_dn,
184                                            struct ldb_message *msg,
185                                            DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
186                                   struct auth_user_info_dc **_user_info_dc);
187 NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx,
188                                            struct loadparm_context *lp_ctx,
189                                            struct auth_session_info **_session_info) ;
190
191 NTSTATUS auth_context_create_methods(TALLOC_CTX *mem_ctx, const char **methods,
192                                      struct tevent_context *ev,
193                                      struct imessaging_context *msg,
194                                      struct loadparm_context *lp_ctx,
195                                      struct ldb_context *sam_ctx,
196                                      struct auth4_context **auth_ctx);
197 const char **auth_methods_from_lp(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx);
198
199 NTSTATUS auth_context_create(TALLOC_CTX *mem_ctx,
200                              struct tevent_context *ev,
201                              struct imessaging_context *msg,
202                              struct loadparm_context *lp_ctx,
203                              struct auth4_context **auth_ctx);
204 NTSTATUS auth_context_create_from_ldb(TALLOC_CTX *mem_ctx, struct ldb_context *ldb, struct auth4_context **auth_ctx);
205
206 NTSTATUS auth_check_password(struct auth4_context *auth_ctx,
207                              TALLOC_CTX *mem_ctx,
208                              const struct auth_usersupplied_info *user_info,
209                              struct auth_user_info_dc **user_info_dc);
210 NTSTATUS auth4_init(void);
211 NTSTATUS auth_register(const struct auth_operations *ops);
212 NTSTATUS server_service_auth_init(void);
213 NTSTATUS authenticate_username_pw(TALLOC_CTX *mem_ctx,
214                                   struct tevent_context *ev,
215                                   struct imessaging_context *msg,
216                                   struct loadparm_context *lp_ctx,
217                                   const char *nt4_domain,
218                                   const char *nt4_username,
219                                   const char *password,
220                                   const uint32_t logon_parameters,
221                                   struct auth_session_info **session_info);
222
223 struct tevent_req *auth_check_password_send(TALLOC_CTX *mem_ctx,
224                                             struct tevent_context *ev,
225                                             struct auth4_context *auth_ctx,
226                                             const struct auth_usersupplied_info *user_info);
227 NTSTATUS auth_check_password_recv(struct tevent_req *req,
228                                   TALLOC_CTX *mem_ctx,
229                                   struct auth_user_info_dc **user_info_dc);
230
231 bool auth_challenge_may_be_modified(struct auth4_context *auth_ctx);
232 NTSTATUS auth_context_set_challenge(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by);
233
234 NTSTATUS auth_get_user_info_dc_principal(TALLOC_CTX *mem_ctx,
235                                         struct auth4_context *auth_ctx,
236                                         const char *principal,
237                                         struct ldb_dn *user_dn,
238                                         struct auth_user_info_dc **user_info_dc);
239
240 NTSTATUS samba_server_gensec_start(TALLOC_CTX *mem_ctx,
241                                    struct tevent_context *event_ctx,
242                                    struct imessaging_context *msg_ctx,
243                                    struct loadparm_context *lp_ctx,
244                                    struct cli_credentials *server_credentials,
245                                    const char *target_service,
246                                    struct gensec_security **gensec_context);
247
248 #endif /* _SMBAUTH_H_ */