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
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
|
/*
SSSD
ID-mapping library
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2012 Red Hat
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/>.
*/
#ifndef SSS_IDMAP_H_
#define SSS_IDMAP_H_
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#define DOM_SID_PREFIX "S-1-5-21-"
#define DOM_SID_PREFIX_LEN (sizeof(DOM_SID_PREFIX) - 1)
/**
* @defgroup sss_idmap Map Unix UIDs and GIDs to SIDs and back
* Libsss_idmap provides a mechanism to translate a SID to a UNIX UID or GID
* or the other way round.
* @{
*/
/**
* Error codes used by libsss_idmap
*/
enum idmap_error_code {
/** Success */
IDMAP_SUCCESS = 0,
/** Function is not yet implemented */
IDMAP_NOT_IMPLEMENTED,
/** General error */
IDMAP_ERROR,
/** Ran out of memory during processing */
IDMAP_OUT_OF_MEMORY,
/** No domain added */
IDMAP_NO_DOMAIN,
/** The provided idmap context is invalid */
IDMAP_CONTEXT_INVALID,
/** The provided SID is invalid */
IDMAP_SID_INVALID,
/** The provided SID was not found */
IDMAP_SID_UNKNOWN,
/** The provided UID or GID could not be mapped */
IDMAP_NO_RANGE,
/** The provided SID is a built-in one */
IDMAP_BUILTIN_SID,
/** No more free slices */
IDMAP_OUT_OF_SLICES
};
/**
* Typedef for memory allocation functions
*/
typedef void *(idmap_alloc_func)(size_t size, void *pvt);
typedef void (idmap_free_func)(void *ptr, void *pvt);
/**
* Structure for id ranges
* FIXME: this struct might change when it is clear how ranges are handled on
* the server side
*/
struct sss_idmap_range {
uint32_t min;
uint32_t max;
};
/**
* Opaque type for SIDs
*/
struct sss_dom_sid;
/**
* Opaque type for the idmap context
*/
struct sss_idmap_ctx;
/**
* Placeholder for Samba's struct dom_sid. Consumers of libsss_idmap should
* include an appropriate Samba header file to define struct dom_sid. We use
* it here to avoid a hard dependency on Samba devel packages.
*/
struct dom_sid;
/**
* @brief Initialize idmap context
*
* @param[in] alloc_func Function to allocate memory for the context, if
* NULL malloc() id used
* @param[in] alloc_pvt Private data for allocation routine
* @param[in] free_func Function to free the memory the context, if
* NULL free() id used
* @param[out] ctx idmap context
*
* @return
* - #IDMAP_OUT_OF_MEMORY: Insufficient memory to create the context
*/
enum idmap_error_code sss_idmap_init(idmap_alloc_func *alloc_func,
void *alloc_pvt,
idmap_free_func *free_func,
struct sss_idmap_ctx **ctx);
/**
* @brief Set/unset autorid compatibility mode
*
* @param[in] ctx idmap context
* @param[in] use_autorid If true, autorid compatibility mode will be used
*/
enum idmap_error_code
sss_idmap_ctx_set_autorid(struct sss_idmap_ctx *ctx, bool use_autorid);
/**
* @brief Set the lower bound of the range of POSIX IDs
*
* @param[in] ctx idmap context
* @param[in] lower lower bound of the range
*/
enum idmap_error_code
sss_idmap_ctx_set_lower(struct sss_idmap_ctx *ctx, id_t lower);
/**
* @brief Set the upper bound of the range of POSIX IDs
*
* @param[in] ctx idmap context
* @param[in] upper upper bound of the range
*/
enum idmap_error_code
sss_idmap_ctx_set_upper(struct sss_idmap_ctx *ctx, id_t upper);
/**
* @brief Set the range size of POSIX IDs available for single domain
*
* @param[in] ctx idmap context
* @param[in] rangesize range size of IDs
*/
enum idmap_error_code
sss_idmap_ctx_set_rangesize(struct sss_idmap_ctx *ctx, id_t rangesize);
/**
* @brief Check if autorid compatibility mode is set
*
* @param[in] ctx idmap context
* @param[out] _autorid true if autorid is used
*/
enum idmap_error_code
sss_idmap_ctx_get_autorid(struct sss_idmap_ctx *ctx, bool *_autorid);
/**
* @brief Get the lower bound of the range of POSIX IDs
*
* @param[in] ctx idmap context
* @param[out] _lower returned lower bound
*/
enum idmap_error_code
sss_idmap_ctx_get_lower(struct sss_idmap_ctx *ctx, id_t *_lower);
/**
* @brief Get the upper bound of the range of POSIX IDs
*
* @param[in] ctx idmap context
* @param[out] _upper returned upper bound
*/
enum idmap_error_code
sss_idmap_ctx_get_upper(struct sss_idmap_ctx *ctx, id_t *_upper);
/**
* @brief Get the range size of POSIX IDs available for single domain
*
* @param[in] ctx idmap context
* @param[out] rangesize returned range size
*/
enum idmap_error_code
sss_idmap_ctx_get_rangesize(struct sss_idmap_ctx *ctx, id_t *rangesize);
/**
* @brief Calculate new range of available POSIX IDs
*
* @param[in] ctx Idmap context
* @param[in] dom_sid Zero-terminated string representation of the domain
* SID (S-1-15-.....)
* @param[in,out] slice_num Slice number to be used. Set this pointer to NULL or
* the addressed value to -1 to calculate slice number
* automatically. The calculated value will be
* returned in this parameter.
* @param[out] range Structure containing upper and lower bound of the
* range of POSIX IDs
*
* @return
* - #IDMAP_OUT_OF_SLICES: Cannot calculate new range because all slices are
* used.
*/
enum idmap_error_code sss_idmap_calculate_range(struct sss_idmap_ctx *ctx,
const char *dom_sid,
id_t *slice_num,
struct sss_idmap_range *range);
/**
* @brief Add a domain to the idmap context
*
* @param[in] ctx Idmap context
* @param[in] domain_name Zero-terminated string with the domain name
* @param[in] domain_sid Zero-terminated string representation of the domain
* SID (S-1-15-.....)
* @param[in] range TBD Some information about the id ranges of this
* domain
*
* @return
* - #IDMAP_OUT_OF_MEMORY: Insufficient memory to store the data in the idmap
* context
* - #IDMAP_SID_INVALID: Invalid SID provided
* - #IDMAP_NO_DOMAIN: No domain domain name given
*/
enum idmap_error_code sss_idmap_add_domain(struct sss_idmap_ctx *ctx,
const char *domain_name,
const char *domain_sid,
struct sss_idmap_range *range);
/**
* @brief Translate SID to a unix UID or GID
*
* @param[in] ctx Idmap context
* @param[in] sid Zero-terminated string representation of the SID
* @param[out] id Returned unix UID or GID
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_SID_INVALID: Invalid SID provided
* - #IDMAP_SID_UNKNOWN: SID cannot be found in the domains added to the
* idmap context
*/
enum idmap_error_code sss_idmap_sid_to_unix(struct sss_idmap_ctx *ctx,
const char *sid,
uint32_t *id);
/**
* @brief Translate a SID stucture to a unix UID or GID
*
* @param[in] ctx Idmap context
* @param[in] dom_sid SID structure
* @param[out] id Returned unix UID or GID
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_SID_INVALID: Invalid SID provided
* - #IDMAP_SID_UNKNOWN: SID cannot be found in the domains added to the
* idmap context
*/
enum idmap_error_code sss_idmap_dom_sid_to_unix(struct sss_idmap_ctx *ctx,
struct sss_dom_sid *dom_sid,
uint32_t *id);
/**
* @brief Translate a binary SID to a unix UID or GID
*
* @param[in] ctx Idmap context
* @param[in] bin_sid Array with the binary SID
* @param[in] length Size of the array containing the binary SID
* @param[out] id Returned unix UID or GID
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_SID_INVALID: Invalid SID provided
* - #IDMAP_SID_UNKNOWN: SID cannot be found in the domains added to the
* idmap context
*/
enum idmap_error_code sss_idmap_bin_sid_to_unix(struct sss_idmap_ctx *ctx,
uint8_t *bin_sid,
size_t length,
uint32_t *id);
/**
* @brief Translate a Samba dom_sid stucture to a unix UID or GID
*
* @param[in] ctx Idmap context
* @param[in] smb_sid Samba dom_sid structure
* @param[out] id Returned unix UID or GID
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_SID_INVALID: Invalid SID provided
* - #IDMAP_SID_UNKNOWN: SID cannot be found in the domains added to the
* idmap context
*/
enum idmap_error_code sss_idmap_smb_sid_to_unix(struct sss_idmap_ctx *ctx,
struct dom_sid *smb_sid,
uint32_t *id);
/**
* @brief Translate unix UID or GID to a SID
*
* @param[in] ctx Idmap context
* @param[in] id unix UID or GID
* @param[out] sid Zero-terminated string representation of the SID, must be
* freed if not needed anymore
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_NO_RANGE: The provided ID cannot be found in the domains added
* to the idmap context
*/
enum idmap_error_code sss_idmap_unix_to_sid(struct sss_idmap_ctx *ctx,
uint32_t id,
char **sid);
/**
* @brief Translate unix UID or GID to a SID structure
*
* @param[in] ctx Idmap context
* @param[in] id unix UID or GID
* @param[out] dom_sid SID structure, must be freed if not needed anymore
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_NO_RANGE: The provided ID cannot be found in the domains added
* to the idmap context
*/
enum idmap_error_code sss_idmap_unix_to_dom_sid(struct sss_idmap_ctx *ctx,
uint32_t id,
struct sss_dom_sid **dom_sid);
/**
* @brief Translate unix UID or GID to a binary SID
*
* @param[in] ctx Idmap context
* @param[in] id unix UID or GID
* @param[out] bin_sid Array with the binary SID,
* must be freed if not needed anymore
* @param[out] length size of the array containing the binary SID
*
* @return
* - #IDMAP_NO_DOMAIN: No domains are added to the idmap context
* - #IDMAP_NO_RANGE: The provided ID cannot be found in the domains added
* to the idmap context
*/
enum idmap_error_code sss_idmap_unix_to_bin_sid(struct sss_idmap_ctx *ctx,
uint32_t id,
uint8_t **bin_sid,
size_t *length);
/**
* @brief Free all the allocated memory of the idmap context
*
* @param[in] ctx Idmap context
*
* @return
* - #IDMAP_CONTEXT_INVALID: Provided context is invalid
*/
enum idmap_error_code sss_idmap_free(struct sss_idmap_ctx *ctx);
/**
* @brief Translate error code to a string
*
* @param[in] err Idmap error code
*
* @return
* - Error description as a zero-terminated string
*/
const char *idmap_error_string(enum idmap_error_code err);
/**
* @brief Check if given string can be used as domain SID
*
* @param[in] str String to check
*
* @return
* - true: String can be used as domain SID
* - false: String can not be used as domain SID
*/
bool is_domain_sid(const char *str);
/**
* @brief Convert binary SID to SID structure
*
* @param[in] ctx Idmap context
* @param[in] bin_sid Array with the binary SID
* @param[in] length Size of the array containing the binary SID
* @param[out] dom_sid SID structure,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_bin_sid_to_dom_sid(struct sss_idmap_ctx *ctx,
const uint8_t *bin_sid,
size_t length,
struct sss_dom_sid **dom_sid);
/**
* @brief Convert binary SID to SID string
*
* @param[in] ctx Idmap context
* @param[in] bin_sid Array with the binary SID
* @param[in] length Size of the array containing the binary SID
* @param[out] sid Zero-terminated string representation of the SID,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_bin_sid_to_sid(struct sss_idmap_ctx *ctx,
const uint8_t *bin_sid,
size_t length,
char **sid);
/**
* @brief Convert SID structure to binary SID
*
* @param[in] ctx Idmap context
* @param[in] dom_sid SID structure
* @param[out] bin_sid Array with the binary SID,
* must be freed if not needed anymore
* @param[out] length Size of the array containing the binary SID
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_dom_sid_to_bin_sid(struct sss_idmap_ctx *ctx,
struct sss_dom_sid *dom_sid,
uint8_t **bin_sid,
size_t *length);
/**
* @brief Convert SID string to binary SID
*
* @param[in] ctx Idmap context
* @param[in] sid Zero-terminated string representation of the SID
* @param[out] bin_sid Array with the binary SID,
* must be freed if not needed anymore
* @param[out] length Size of the array containing the binary SID
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_sid_to_bin_sid(struct sss_idmap_ctx *ctx,
const char *sid,
uint8_t **bin_sid,
size_t *length);
/**
* @brief Convert SID structure to SID string
*
* @param[in] ctx Idmap context
* @param[in] dom_sid SID structure
* @param[out] sid Zero-terminated string representation of the SID,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_dom_sid_to_sid(struct sss_idmap_ctx *ctx,
struct sss_dom_sid *dom_sid,
char **sid);
/**
* @brief Convert SID string to SID structure
*
* @param[in] ctx Idmap context
* @param[in] sid Zero-terminated string representation of the SID
* @param[out] dom_sid SID structure,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_sid_to_dom_sid(struct sss_idmap_ctx *ctx,
const char *sid,
struct sss_dom_sid **dom_sid);
/**
* @brief Convert SID string to Samba dom_sid structure
*
* @param[in] ctx Idmap context
* @param[in] sid Zero-terminated string representation of the SID
* @param[out] smb_sid Samba dom_sid structure,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_sid_to_smb_sid(struct sss_idmap_ctx *ctx,
const char *sid,
struct dom_sid **smb_sid);
/**
* @brief Convert Samba dom_sid structure to SID string
*
* @param[in] ctx Idmap context
* @param[in] smb_sid Samba dom_sid structure
* @param[out] sid Zero-terminated string representation of the SID,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_smb_sid_to_sid(struct sss_idmap_ctx *ctx,
struct dom_sid *smb_sid,
char **sid);
/**
* @brief Convert SID stucture to Samba dom_sid structure
*
* @param[in] ctx Idmap context
* @param[in] dom_sid SID structure
* @param[out] smb_sid Samba dom_sid structure,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_dom_sid_to_smb_sid(struct sss_idmap_ctx *ctx,
struct sss_dom_sid *dom_sid,
struct dom_sid **smb_sid);
/**
* @brief Convert Samba dom_sid structure to SID structure
*
* @param[in] ctx Idmap context
* @param[in] smb_sid Samba dom_sid structure
* @param[out] dom_sid SID structure,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_smb_sid_to_dom_sid(struct sss_idmap_ctx *ctx,
struct dom_sid *smb_sid,
struct sss_dom_sid **dom_sid);
/**
* @brief Convert binary SID to Samba dom_sid structure
*
* @param[in] ctx Idmap context
* @param[in] bin_sid Array with the binary SID
* @param[in] length Size of the array containing the binary SID
* @param[out] smb_sid Samba dom_sid structure,
* must be freed if not needed anymore
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_bin_sid_to_smb_sid(struct sss_idmap_ctx *ctx,
const uint8_t *bin_sid,
size_t length,
struct dom_sid **smb_sid);
/**
* @brief Convert Samba dom_sid structure to binary SID
*
* @param[in] ctx Idmap context
* @param[in] smb_sid Samba dom_sid structure
* @param[out] bin_sid Array with the binary SID,
* must be freed if not needed anymore
* @param[out] length Size of the array containing the binary SID
*
* @return
* - #IDMAP_SID_INVALID: Given SID is invalid
* - #IDMAP_OUT_OF_MEMORY: Failed to allocate memory for the result
*/
enum idmap_error_code sss_idmap_smb_sid_to_bin_sid(struct sss_idmap_ctx *ctx,
struct dom_sid *smb_sid,
uint8_t **bin_sid,
size_t *length);
/**
* @}
*/
#endif /* SSS_IDMAP_H_ */
|
