1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
|
/*
SSSD
sss_groupmod
Copyright (C) Jakub Hrozek <jhrozek@redhat.com> 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <talloc.h>
#include <popt.h>
#include <errno.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "util/util.h"
#include "db/sysdb.h"
#include "tools/tools_util.h"
#ifndef GROUPMOD
#define GROUPMOD SHADOW_UTILS_PATH"/groupmod "
#endif
#ifndef GROUPMOD_GID
#define GROUPMOD_GID "-g %u "
#endif
#ifndef GROUPMOD_GROUPNAME
#define GROUPMOD_GROUPNAME "%s "
#endif
static void mod_group_req_done(struct tevent_req *req)
{
struct ops_ctx *data = tevent_req_callback_data(req, struct ops_ctx);
data->error = sysdb_transaction_commit_recv(req);
data->done = true;
}
static void mod_group_done(struct ops_ctx *data, int error)
{
struct tevent_req *req;
if (error != EOK) {
goto fail;
}
req = sysdb_transaction_commit_send(data, data->ev, data->handle);
if (!req) {
error = ENOMEM;
goto fail;
}
tevent_req_set_callback(req, mod_group_req_done, data);
return;
fail:
/* free transaction */
talloc_zfree(data->handle);
data->error = error;
data->done = true;
}
static void mod_group_attr_done(struct tevent_req *req);
static void mod_group_cont(struct ops_ctx *data);
static void remove_from_groups(struct ops_ctx *data);
static void remove_from_groups_done(struct tevent_req *req);
static void add_to_groups(struct ops_ctx *data);
static void add_to_groups_done(struct tevent_req *req);
static void mod_group(struct tevent_req *req)
{
struct ops_ctx *data;
struct tevent_req *subreq;
struct sysdb_attrs *attrs;
int ret;
data = tevent_req_callback_data(req, struct ops_ctx);
ret = sysdb_transaction_recv(req, data, &data->handle);
if (ret != EOK) {
return mod_group_done(data, ret);
}
talloc_zfree(req);
if (data->gid != 0) {
attrs = sysdb_new_attrs(data);
if (!attrs) {
mod_group_done(data, ENOMEM);
}
ret = sysdb_attrs_add_uint32(attrs, SYSDB_GIDNUM, data->gid);
if (ret) {
mod_group_done(data, ret);
}
subreq = sysdb_set_group_attr_send(data, data->ev, data->handle,
data->domain, data->name,
attrs, SYSDB_MOD_REP);
if (!subreq) {
return mod_group_done(data, ret);
}
tevent_req_set_callback(subreq, mod_group_attr_done, data);
return;
}
return mod_group_cont(data);
}
static void mod_group_attr_done(struct tevent_req *subreq)
{
struct ops_ctx *data = tevent_req_callback_data(subreq, struct ops_ctx);
int ret;
ret = sysdb_set_group_attr_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
return mod_group_done(data, ret);
}
mod_group_cont(data);
}
static void mod_group_cont(struct ops_ctx *data)
{
if (data->rmgroups != NULL) {
return remove_from_groups(data);
}
if (data->addgroups != NULL) {
return add_to_groups(data);
}
return mod_group_done(data, EOK);
}
static void remove_from_groups(struct ops_ctx *data)
{
struct ldb_dn *parent_dn;
struct ldb_dn *member_dn;
struct tevent_req *req;
member_dn = sysdb_group_dn(data->ctx->sysdb, data,
data->domain->name, data->name);
if (!member_dn) {
return mod_group_done(data, ENOMEM);
}
parent_dn = sysdb_group_dn(data->ctx->sysdb, data,
data->domain->name,
data->rmgroups[data->cur]);
if (!parent_dn) {
return mod_group_done(data, ENOMEM);
}
req = sysdb_mod_group_member_send(data,
data->ev,
data->handle,
member_dn,
parent_dn,
LDB_FLAG_MOD_DELETE);
if (!req) {
return mod_group_done(data, ENOMEM);
}
tevent_req_set_callback(req, remove_from_groups_done, data);
}
static void remove_from_groups_done(struct tevent_req *req)
{
struct ops_ctx *data = tevent_req_callback_data(req, struct ops_ctx);
int ret;
ret = sysdb_mod_group_member_recv(req);
if (ret) {
return mod_group_done(data, ret);
}
talloc_zfree(req);
/* go on to next group */
data->cur++;
/* check if we added all of them */
if (data->rmgroups[data->cur] == NULL) {
data->cur = 0;
if (data->addgroups != NULL) {
return remove_from_groups(data);
}
return mod_group_done(data, EOK);
}
return remove_from_groups(data);
}
static void add_to_groups(struct ops_ctx *data)
{
struct ldb_dn *parent_dn;
struct ldb_dn *member_dn;
struct tevent_req *req;
member_dn = sysdb_group_dn(data->ctx->sysdb, data,
data->domain->name, data->name);
if (!member_dn) {
return mod_group_done(data, ENOMEM);
}
parent_dn = sysdb_group_dn(data->ctx->sysdb, data,
data->domain->name,
data->addgroups[data->cur]);
if (!parent_dn) {
return mod_group_done(data, ENOMEM);
}
req = sysdb_mod_group_member_send(data,
data->ev,
data->handle,
member_dn,
parent_dn,
LDB_FLAG_MOD_ADD);
if (!req) {
return mod_group_done(data, ENOMEM);
}
tevent_req_set_callback(req, add_to_groups_done, data);
}
static void add_to_groups_done(struct tevent_req *req)
{
struct ops_ctx *data = tevent_req_callback_data(req, struct ops_ctx);
int ret;
ret = sysdb_mod_group_member_recv(req);
if (ret) {
return mod_group_done(data, ret);
}
talloc_zfree(req);
/* go on to next group */
data->cur++;
/* check if we added all of them */
if (data->addgroups[data->cur] == NULL) {
return mod_group_done(data, EOK);
}
return add_to_groups(data);
}
static int groupmod_legacy(struct tools_ctx *tools_ctx,
struct ops_ctx *ctx, int old_domain)
{
int ret = EOK;
char *command = NULL;
struct sss_domain_info *dom = NULL;
APPEND_STRING(command, GROUPMOD);
if (ctx->addgroups || ctx->rmgroups) {
ERROR("Group nesting is not supported in this domain\n");
talloc_free(command);
return EINVAL;
}
if (ctx->gid) {
ret = find_domain_for_id(tools_ctx, ctx->gid, &dom);
if (ret == old_domain) {
APPEND_PARAM(command, GROUPMOD_GID, ctx->gid);
} else {
ERROR("Changing gid only allowed inside the same domain\n");
talloc_free(command);
return EINVAL;
}
}
APPEND_PARAM(command, GROUPMOD_GROUPNAME, ctx->name);
ret = system(command);
if (ret) {
if (ret == -1) {
DEBUG(1, ("system(3) failed\n"));
} else {
DEBUG(1, ("Could not exec '%s', return code: %d\n",
command, WEXITSTATUS(ret)));
}
talloc_free(command);
return EFAULT;
}
talloc_free(command);
return ret;
}
int main(int argc, const char **argv)
{
gid_t pc_gid = 0;
int pc_debug = 0;
struct poptOption long_options[] = {
POPT_AUTOHELP
{ "debug", '\0', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &pc_debug,
0, _("The debug level to run with"), NULL },
{ "append-group", 'a', POPT_ARG_STRING, NULL,
'a', _("Groups to add this group to"), NULL },
{ "remove-group", 'r', POPT_ARG_STRING, NULL,
'r', _("Groups to remove this group from"), NULL },
{ "gid", 'g', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &pc_gid,
0, _("The GID of the group"), NULL },
POPT_TABLEEND
};
poptContext pc = NULL;
struct sss_domain_info *dom;
struct ops_ctx *data = NULL;
struct tools_ctx *ctx = NULL;
struct tevent_req *req;
char *groups;
int ret;
struct group *grp_info;
gid_t old_gid = 0;
debug_prg_name = argv[0];
ret = set_locale();
if (ret != EOK) {
DEBUG(1, ("set_locale failed (%d): %s\n", ret, strerror(ret)));
ERROR("Error setting the locale\n");
ret = EXIT_FAILURE;
goto fini;
}
CHECK_ROOT(ret, debug_prg_name);
ret = init_sss_tools(&ctx);
if (ret != EOK) {
DEBUG(1, ("init_sss_tools failed (%d): %s\n", ret, strerror(ret)));
ERROR("Error initializing the tools\n");
ret = EXIT_FAILURE;
goto fini;
}
data = talloc_zero(ctx, struct ops_ctx);
if (data == NULL) {
DEBUG(1, ("Could not allocate memory for data context\n"));
ERROR("Out of memory\n");
return ENOMEM;
}
data->ctx = ctx;
data->ev = ctx->ev;
/* parse ops_ctx */
pc = poptGetContext(NULL, argc, argv, long_options, 0);
poptSetOtherOptionHelp(pc, "USERNAME");
while ((ret = poptGetNextOpt(pc)) > 0) {
if (ret == 'a' || ret == 'r') {
groups = poptGetOptArg(pc);
if (!groups) {
ret = -1;
break;
}
ret = parse_groups(ctx,
groups,
(ret == 'a') ? (&data->addgroups) : (&data->rmgroups));
free(groups);
if (ret != EOK) {
break;
}
}
}
debug_level = pc_debug;
if (ret != -1) {
usage(pc, poptStrerror(ret));
ret = EXIT_FAILURE;
goto fini;
}
/* groupname is an argument without --option */
data->name = poptGetArg(pc);
if (data->name == NULL) {
usage(pc, _("Specify group to modify\n"));
ret = EXIT_FAILURE;
goto fini;
}
data->gid = pc_gid;
/* arguments processed, go on to actual work */
grp_info = getgrnam(data->name);
if (grp_info) {
old_gid = grp_info->gr_gid;
}
ret = find_domain_for_id(ctx, old_gid, &dom);
switch (ret) {
case ID_IN_LOCAL:
data->domain = dom;
break;
case ID_IN_LEGACY_LOCAL:
data->domain = dom;
case ID_OUTSIDE:
ret = groupmod_legacy(ctx, data, ret);
if(ret != EOK) {
ERROR("Cannot delete group from domain using the legacy tools\n");
}
goto fini;
case ID_IN_OTHER:
DEBUG(1, ("Cannot modify group from domain %s\n", dom->name));
ERROR("Unsupported domain type\n");
ret = EXIT_FAILURE;
goto fini;
default:
DEBUG(1, ("Unknown return code %d from find_domain_for_id\n", ret));
ERROR("Error looking up domain\n");
ret = EXIT_FAILURE;
goto fini;
}
req = sysdb_transaction_send(ctx, ctx->ev, ctx->sysdb);
if (!req) {
DEBUG(1, ("Could not start transaction (%d)[%s]\n", ret, strerror(ret)));
ERROR("Transaction error. Could not modify group.\n");
ret = EXIT_FAILURE;
goto fini;
}
tevent_req_set_callback(req, mod_group, data);
while (!data->done) {
tevent_loop_once(ctx->ev);
}
if (data->error) {
ret = data->error;
DEBUG(1, ("sysdb operation failed (%d)[%s]\n", ret, strerror(ret)));
ERROR("Transaction error. Could not modify group.\n");
ret = EXIT_FAILURE;
goto fini;
}
ret = EXIT_SUCCESS;
fini:
poptFreeContext(pc);
talloc_free(ctx);
exit(ret);
}
|