Remove a number of NT_STATUS_HAVE_NO_MEMORY_AND_FREE macros from the codebase.
[samba.git] / auth / auth_sam_reply.c
1 /*
2    Unix SMB/CIFS implementation.
3
4    Convert a server info struct into the form for PAC and NETLOGON replies
5
6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2011
7    Copyright (C) Stefan Metzmacher <metze@samba.org>  2005
8
9    This program is free software; you can redistribute it and/or modify
10    it under the terms of the GNU General Public License as published by
11    the Free Software Foundation; either version 3 of the License, or
12    (at your option) any later version.
13
14    This program is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU General Public License for more details.
18
19    You should have received a copy of the GNU General Public License
20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "librpc/gen_ndr/auth.h"
25 #include "libcli/security/security.h"
26 #include "auth/auth_sam_reply.h"
27
28 NTSTATUS auth_convert_user_info_dc_sambaseinfo(TALLOC_CTX *mem_ctx,
29                                               struct auth_user_info_dc *user_info_dc,
30                                               struct netr_SamBaseInfo **_sam)
31 {
32         NTSTATUS status;
33         struct auth_user_info *info;
34         struct netr_SamBaseInfo *sam = talloc_zero(mem_ctx, struct netr_SamBaseInfo);
35         NT_STATUS_HAVE_NO_MEMORY(sam);
36
37         if (user_info_dc->num_sids > PRIMARY_USER_SID_INDEX) {
38                 status = dom_sid_split_rid(sam, &user_info_dc->sids[PRIMARY_USER_SID_INDEX],
39                                            &sam->domain_sid, &sam->rid);
40                 if (!NT_STATUS_IS_OK(status)) {
41                         return status;
42                 }
43         } else {
44                 return NT_STATUS_INVALID_PARAMETER;
45         }
46
47         if (user_info_dc->num_sids > PRIMARY_GROUP_SID_INDEX) {
48                 status = dom_sid_split_rid(NULL, &user_info_dc->sids[PRIMARY_GROUP_SID_INDEX],
49                                            NULL, &sam->primary_gid);
50                 if (!NT_STATUS_IS_OK(status)) {
51                         return status;
52                 }
53         } else {
54                 /* if we have to encode something like SYSTEM (with no
55                  * second SID in the token) then this is the only
56                  * choice */
57                 sam->primary_gid = sam->rid;
58         }
59
60         info = user_info_dc->info;
61
62         sam->logon_time = info->last_logon;
63         sam->logoff_time =  info->last_logoff;
64         sam->kickoff_time = info->acct_expiry;
65         sam->last_password_change = info->last_password_change;
66         sam->allow_password_change = info->allow_password_change;
67         sam->force_password_change = info->force_password_change;
68
69         sam->account_name.string = info->account_name;
70         sam->full_name.string = info->full_name;
71         sam->logon_script.string = info->logon_script;
72         sam->profile_path.string = info->profile_path;
73         sam->home_directory.string = info->home_directory;
74         sam->home_drive.string = info->home_drive;
75
76         sam->logon_count = info->logon_count;
77         sam->bad_password_count = info->bad_password_count;
78         sam->groups.count = 0;
79         sam->groups.rids = NULL;
80
81         if (user_info_dc->num_sids > 2) {
82                 size_t i;
83                 sam->groups.rids = talloc_array(sam, struct samr_RidWithAttribute,
84                                                 user_info_dc->num_sids);
85
86                 if (sam->groups.rids == NULL)
87                         return NT_STATUS_NO_MEMORY;
88
89                 for (i=2; i<user_info_dc->num_sids; i++) {
90                         struct dom_sid *group_sid = &user_info_dc->sids[i];
91                         if (!dom_sid_in_domain(sam->domain_sid, group_sid)) {
92                                 /* We handle this elsewhere */
93                                 continue;
94                         }
95                         sam->groups.rids[sam->groups.count].rid =
96                                 group_sid->sub_auths[group_sid->num_auths-1];
97
98                         sam->groups.rids[sam->groups.count].attributes =
99                                 SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
100                         sam->groups.count += 1;
101                 }
102         }
103
104         sam->user_flags = 0; /* w2k3 uses NETLOGON_EXTRA_SIDS | NETLOGON_NTLMV2_ENABLED */
105         if (!user_info_dc->info->authenticated) {
106                 sam->user_flags |= NETLOGON_GUEST;
107         }
108         sam->acct_flags = user_info_dc->info->acct_flags;
109         sam->logon_server.string = user_info_dc->info->logon_server;
110         sam->logon_domain.string = user_info_dc->info->domain_name;
111         sam->sub_auth_status = 0;
112         sam->last_successful_logon = 0;
113         sam->last_failed_logon = 0;
114         sam->failed_logon_count = 0;
115         sam->reserved = 0;
116
117         ZERO_STRUCT(sam->key);
118         if (user_info_dc->user_session_key.length == sizeof(sam->key.key)) {
119                 memcpy(sam->key.key, user_info_dc->user_session_key.data, sizeof(sam->key.key));
120         }
121
122         ZERO_STRUCT(sam->LMSessKey);
123         if (user_info_dc->lm_session_key.length == sizeof(sam->LMSessKey.key)) {
124                 memcpy(sam->LMSessKey.key, user_info_dc->lm_session_key.data,
125                        sizeof(sam->LMSessKey.key));
126         }
127
128         *_sam = sam;
129
130         return NT_STATUS_OK;
131 }
132
133 /* Note that the validity of the _sam3 structure is only as long as
134  * the user_info_dc it was generated from */
135 NTSTATUS auth_convert_user_info_dc_saminfo3(TALLOC_CTX *mem_ctx,
136                                            struct auth_user_info_dc *user_info_dc,
137                                            struct netr_SamInfo3 **_sam3)
138 {
139         struct netr_SamBaseInfo *sam;
140         struct netr_SamInfo3 *sam3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
141         NTSTATUS status;
142         size_t i;
143         NT_STATUS_HAVE_NO_MEMORY(sam3);
144
145         status = auth_convert_user_info_dc_sambaseinfo(sam3, user_info_dc, &sam);
146         if (!NT_STATUS_IS_OK(status)) {
147                 talloc_free(sam3);
148                 return status;
149         }
150         sam3->base = *sam;
151         sam3->sidcount  = 0;
152         sam3->sids      = NULL;
153
154
155         sam3->sids = talloc_array(sam, struct netr_SidAttr,
156                                   user_info_dc->num_sids);
157         if (sam3->sids == NULL) {
158                 TALLOC_FREE(sam3);
159                 return NT_STATUS_NO_MEMORY;
160         }
161
162         /* We don't put the user and group SIDs in there */
163         for (i=2; i<user_info_dc->num_sids; i++) {
164                 if (dom_sid_in_domain(sam->domain_sid, &user_info_dc->sids[i])) {
165                         continue;
166                 }
167                 sam3->sids[sam3->sidcount].sid = dom_sid_dup(sam3->sids, &user_info_dc->sids[i]);
168                 if (sam3->sids[sam3->sidcount].sid == NULL) {
169                         TALLOC_FREE(sam3);
170                         return NT_STATUS_NO_MEMORY;
171                 }
172                 sam3->sids[sam3->sidcount].attributes =
173                         SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
174                 sam3->sidcount += 1;
175         }
176         if (sam3->sidcount) {
177                 sam3->base.user_flags |= NETLOGON_EXTRA_SIDS;
178         } else {
179                 sam3->sids = NULL;
180         }
181         *_sam3 = sam3;
182
183         return NT_STATUS_OK;
184 }
185
186 /**
187  * Make a user_info struct from the info3 or similar returned by a domain logon.
188  *
189  * The netr_SamInfo3 is also a key structure in the source3 auth subsystem
190  */
191
192 NTSTATUS make_user_info_SamBaseInfo(TALLOC_CTX *mem_ctx,
193                                     const char *account_name,
194                                     struct netr_SamBaseInfo *base,
195                                     bool authenticated,
196                                     struct auth_user_info **_user_info)
197 {
198         struct auth_user_info *info;
199
200         info = talloc_zero(mem_ctx, struct auth_user_info);
201         NT_STATUS_HAVE_NO_MEMORY(info);
202
203         if (base->account_name.string) {
204                 info->account_name = talloc_strdup(info, base->account_name.string);
205         } else {
206                 info->account_name = talloc_strdup(info, account_name);
207         }
208         NT_STATUS_HAVE_NO_MEMORY(info->account_name);
209
210         if (base->logon_domain.string) {
211                 info->domain_name = talloc_strdup(info, base->logon_domain.string);
212                 NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
213         }
214
215         if (base->full_name.string) {
216                 info->full_name = talloc_strdup(info, base->full_name.string);
217                 NT_STATUS_HAVE_NO_MEMORY(info->full_name);
218         }
219         if (base->logon_script.string) {
220                 info->logon_script = talloc_strdup(info, base->logon_script.string);
221                 NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
222         }
223         if (base->profile_path.string) {
224                 info->profile_path = talloc_strdup(info, base->profile_path.string);
225                 NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
226         }
227         if (base->home_directory.string) {
228                 info->home_directory = talloc_strdup(info, base->home_directory.string);
229                 NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
230         }
231         if (base->home_drive.string) {
232                 info->home_drive = talloc_strdup(info, base->home_drive.string);
233                 NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
234         }
235         if (base->logon_server.string) {
236                 info->logon_server = talloc_strdup(info, base->logon_server.string);
237                 NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
238         }
239         info->last_logon = base->logon_time;
240         info->last_logoff = base->logoff_time;
241         info->acct_expiry = base->kickoff_time;
242         info->last_password_change = base->last_password_change;
243         info->allow_password_change = base->allow_password_change;
244         info->force_password_change = base->force_password_change;
245         info->logon_count = base->logon_count;
246         info->bad_password_count = base->bad_password_count;
247         info->acct_flags = base->acct_flags;
248
249         /* Only set authenticated if both NETLOGON_GUEST is not set, and authenticated is set */
250         info->authenticated = (authenticated && (!(base->user_flags & NETLOGON_GUEST)));
251
252         *_user_info = info;
253         return NT_STATUS_OK;
254 }
255
256 /**
257  * Make a user_info_dc struct from the info3 returned by a domain logon
258  */
259 NTSTATUS make_user_info_dc_netlogon_validation(TALLOC_CTX *mem_ctx,
260                                               const char *account_name,
261                                               uint16_t validation_level,
262                                               union netr_Validation *validation,
263                                                bool authenticated,
264                                               struct auth_user_info_dc **_user_info_dc)
265 {
266         NTSTATUS status;
267         struct auth_user_info_dc *user_info_dc;
268         struct netr_SamBaseInfo *base = NULL;
269         uint32_t i;
270
271         switch (validation_level) {
272         case 2:
273                 if (!validation || !validation->sam2) {
274                         return NT_STATUS_INVALID_PARAMETER;
275                 }
276                 base = &validation->sam2->base;
277                 break;
278         case 3:
279                 if (!validation || !validation->sam3) {
280                         return NT_STATUS_INVALID_PARAMETER;
281                 }
282                 base = &validation->sam3->base;
283                 break;
284         case 6:
285                 if (!validation || !validation->sam6) {
286                         return NT_STATUS_INVALID_PARAMETER;
287                 }
288                 base = &validation->sam6->base;
289                 break;
290         default:
291                 return NT_STATUS_INVALID_LEVEL;
292         }
293
294         user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
295         NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
296
297         /*
298            Here is where we should check the list of
299            trusted domains, and verify that the SID
300            matches.
301         */
302         if (!base->domain_sid) {
303                 DEBUG(0, ("Cannot operate on a Netlogon Validation without a domain SID"));
304                 return NT_STATUS_INVALID_PARAMETER;
305         }
306
307         /* The IDL layer would be a better place to check this, but to
308          * guard the integer addition below, we double-check */
309         if (base->groups.count > 65535) {
310                 return NT_STATUS_INVALID_PARAMETER;
311         }
312
313         user_info_dc->num_sids = 2;
314
315         user_info_dc->sids = talloc_array(user_info_dc, struct dom_sid,  user_info_dc->num_sids + base->groups.count);
316         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
317
318         user_info_dc->sids[PRIMARY_USER_SID_INDEX] = *base->domain_sid;
319         if (!sid_append_rid(&user_info_dc->sids[PRIMARY_USER_SID_INDEX], base->rid)) {
320                 return NT_STATUS_INVALID_PARAMETER;
321         }
322
323         user_info_dc->sids[PRIMARY_GROUP_SID_INDEX] = *base->domain_sid;
324         if (!sid_append_rid(&user_info_dc->sids[PRIMARY_GROUP_SID_INDEX], base->primary_gid)) {
325                 return NT_STATUS_INVALID_PARAMETER;
326         }
327
328         for (i = 0; i < base->groups.count; i++) {
329                 user_info_dc->sids[user_info_dc->num_sids] = *base->domain_sid;
330                 if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids], base->groups.rids[i].rid)) {
331                         return NT_STATUS_INVALID_PARAMETER;
332                 }
333                 user_info_dc->num_sids++;
334         }
335
336         /* Copy 'other' sids.  We need to do sid filtering here to
337            prevent possible elevation of privileges.  See:
338
339            http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
340          */
341
342         if (validation_level == 3) {
343                 struct dom_sid *dgrps = user_info_dc->sids;
344                 size_t sidcount;
345
346                 /* The IDL layer would be a better place to check this, but to
347                  * guard the integer addition below, we double-check */
348                 if (validation->sam3->sidcount > 65535) {
349                         return NT_STATUS_INVALID_PARAMETER;
350                 }
351
352                 sidcount = user_info_dc->num_sids + validation->sam3->sidcount;
353                 if (validation->sam3->sidcount > 0) {
354                         dgrps = talloc_realloc(user_info_dc, dgrps, struct dom_sid, sidcount);
355                         NT_STATUS_HAVE_NO_MEMORY(dgrps);
356
357                         for (i = 0; i < validation->sam3->sidcount; i++) {
358                                 if (validation->sam3->sids[i].sid) {
359                                         dgrps[user_info_dc->num_sids] = *validation->sam3->sids[i].sid;
360                                         user_info_dc->num_sids++;
361                                 }
362                         }
363                 }
364
365                 user_info_dc->sids = dgrps;
366
367                 /* Where are the 'global' sids?... */
368         }
369
370         status = make_user_info_SamBaseInfo(user_info_dc, account_name, base, authenticated, &user_info_dc->info);
371         if (!NT_STATUS_IS_OK(status)) {
372                 return status;
373         }
374
375         /* ensure we are never given NULL session keys */
376
377         if (all_zero(base->key.key, sizeof(base->key.key))) {
378                 user_info_dc->user_session_key = data_blob(NULL, 0);
379         } else {
380                 user_info_dc->user_session_key = data_blob_talloc(user_info_dc, base->key.key, sizeof(base->key.key));
381                 NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
382         }
383
384         if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
385                 user_info_dc->lm_session_key = data_blob(NULL, 0);
386         } else {
387                 user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, base->LMSessKey.key, sizeof(base->LMSessKey.key));
388                 NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
389         }
390
391         *_user_info_dc = user_info_dc;
392         return NT_STATUS_OK;
393 }
394
395 /**
396  * Make a user_info_dc struct from the PAC_LOGON_INFO supplied in the krb5 logon
397  */
398 NTSTATUS make_user_info_dc_pac(TALLOC_CTX *mem_ctx,
399                               struct PAC_LOGON_INFO *pac_logon_info,
400                               struct auth_user_info_dc **_user_info_dc)
401 {
402         uint32_t i;
403         NTSTATUS nt_status;
404         union netr_Validation validation;
405         struct auth_user_info_dc *user_info_dc;
406
407         validation.sam3 = &pac_logon_info->info3;
408
409         nt_status = make_user_info_dc_netlogon_validation(mem_ctx, "", 3, &validation,
410                                                           true, /* This user was authenticated */
411                                                           &user_info_dc);
412         if (!NT_STATUS_IS_OK(nt_status)) {
413                 return nt_status;
414         }
415
416         if (pac_logon_info->res_groups.count > 0) {
417                 size_t sidcount;
418                 /* The IDL layer would be a better place to check this, but to
419                  * guard the integer addition below, we double-check */
420                 if (pac_logon_info->res_groups.count > 65535) {
421                         talloc_free(user_info_dc);
422                         return NT_STATUS_INVALID_PARAMETER;
423                 }
424
425                 /*
426                   Here is where we should check the list of
427                   trusted domains, and verify that the SID
428                   matches.
429                 */
430                 if (!pac_logon_info->res_group_dom_sid) {
431                         DEBUG(0, ("Cannot operate on a PAC without a resource domain SID"));
432                         return NT_STATUS_INVALID_PARAMETER;
433                 }
434
435                 sidcount = user_info_dc->num_sids + pac_logon_info->res_groups.count;
436                 user_info_dc->sids
437                         = talloc_realloc(user_info_dc, user_info_dc->sids, struct dom_sid, sidcount);
438                 if (user_info_dc->sids == NULL) {
439                         TALLOC_FREE(user_info_dc);
440                         return NT_STATUS_NO_MEMORY;
441                 }
442
443                 for (i = 0; pac_logon_info->res_group_dom_sid && i < pac_logon_info->res_groups.count; i++) {
444                         user_info_dc->sids[user_info_dc->num_sids] = *pac_logon_info->res_group_dom_sid;
445                         if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids],
446                                             pac_logon_info->res_groups.rids[i].rid)) {
447                                 return NT_STATUS_INVALID_PARAMETER;
448                         }
449                         user_info_dc->num_sids++;
450                 }
451         }
452         *_user_info_dc = user_info_dc;
453         return NT_STATUS_OK;
454 }