summaryrefslogtreecommitdiff
path: root/lib/smbconf/smbconf.h
blob: 7f62b06af45bd809a2cf7a7cbba48645fa569382 (plain)
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
/*
 *  Unix SMB/CIFS implementation.
 *  libsmbconf - Samba configuration library
 *  Copyright (C) Michael Adam 2008
 *
 *  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 __LIBSMBCONF_H__
#define __LIBSMBCONF_H__

/**
 * @defgroup libsmbconf The smbconf API
 *
 * libsmbconf is a library to read or, based on the backend, modify the Samba
 * configuration.
 *
 * @{
 */

/**
 * @brief Status codes returned from smbconf functions
 */
enum _sbcErrType {
	SBC_ERR_OK = 0,          /**< Successful completion **/
	SBC_ERR_NOT_IMPLEMENTED, /**< Function not implemented **/
	SBC_ERR_NOT_SUPPORTED,   /**< Function not supported **/
	SBC_ERR_UNKNOWN_FAILURE, /**< General failure **/
	SBC_ERR_NOMEM,           /**< Memory allocation error **/
	SBC_ERR_INVALID_PARAM,   /**< An Invalid parameter was supplied **/
	SBC_ERR_BADFILE,         /**< A bad file was supplied **/
	SBC_ERR_NO_SUCH_SERVICE, /**< There is no such service provided **/
	SBC_ERR_IO_FAILURE,      /**< There was an IO error **/
	SBC_ERR_CAN_NOT_COMPLETE,/**< Can not complete action **/
	SBC_ERR_NO_MORE_ITEMS,   /**< No more items left **/
	SBC_ERR_FILE_EXISTS,     /**< File already exists **/
	SBC_ERR_ACCESS_DENIED,   /**< Access has been denied **/
};

typedef enum _sbcErrType sbcErr;

#define SBC_ERROR_IS_OK(x) ((x) == SBC_ERR_OK)
#define SBC_ERROR_EQUAL(x,y) ((x) == (y))

struct smbconf_ctx;

/* the change sequence number */
struct smbconf_csn {
	uint64_t csn;
};

/** Information about a service */
struct smbconf_service {
	char *name;          /**< The name of the share */
	uint32_t num_params; /**< List of length num_shares of parameter counts for each share */
	char **param_names;  /**< List of lists of parameter names for each share */
	char **param_values; /**< List of lists of parameter values for each share */
};

/*
 * The smbconf API functions
 */

/**
 * @brief Translate an error value into a string
 *
 * @param error
 *
 * @return a pointer to a static string
 **/
const char *sbcErrorString(sbcErr error);

/**
 * @brief Check if the backend requires messaging to be set up.
 *
 * Tell whether the backend requires messaging to be set up
 * for the backend to work correctly.
 *
 * @param[in] ctx       The smbconf context to check.
 *
 * @return              True if needed, false if not.
 */
bool smbconf_backend_requires_messaging(struct smbconf_ctx *ctx);

/**
 * @brief Tell whether the source is writeable.
 *
 * @param[in] ctx       The smbconf context to check.
 *
 * @return              True if it is writeable, false if not.
 */
bool smbconf_is_writeable(struct smbconf_ctx *ctx);

/**
 * @brief Close the configuration.
 *
 * @param[in] ctx       The smbconf context to close.
 */
void smbconf_shutdown(struct smbconf_ctx *ctx);

/**
 * @brief Detect changes in the configuration.
 *
 * Get the change sequence number of the given service/parameter. Service and
 * parameter strings may be NULL.
 *
 * The given change sequence number (csn) struct is filled with the current
 * csn. smbconf_changed() can also be used for initial retrieval of the csn.
 *
 * @param[in] ctx       The smbconf context to check for changes.
 *
 * @param[inout] csn    The smbconf csn to be filled.
 *
 * @param[in] service   The service name to check or NULL.
 *
 * @param[in] param     The param to check or NULL.
 *
 * @return              True if it has been changed, false if not.
 */
bool smbconf_changed(struct smbconf_ctx *ctx, struct smbconf_csn *csn,
		     const char *service, const char *param);

/**
 * @brief Drop the whole configuration (restarting empty).
 *
 * @param[in] ctx       The smbconf context to drop the config.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_drop(struct smbconf_ctx *ctx);

/**
 * @brief Get the whole configuration as lists of strings with counts.
 *
 * @param[in] ctx       The smbconf context to get the lists from.
 *
 * @param[in] mem_ctx   The memory context to use.
 *
 * @param[in] num_shares A pointer to store the number of shares.
 *
 * @param[out] services  A pointer to store the services.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 *
 * @see smbconf_service
 */
sbcErr smbconf_get_config(struct smbconf_ctx *ctx,
			  TALLOC_CTX *mem_ctx,
			  uint32_t *num_shares,
			  struct smbconf_service ***services);

/**
 * @brief Get the list of share names defined in the configuration.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] mem_ctx   The memory context to use.
 *
 * @param[in] num_shares A pointer to store the number of shares.
 *
 * @param[in] share_names A pointer to store the share names.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_get_share_names(struct smbconf_ctx *ctx,
			       TALLOC_CTX *mem_ctx,
			       uint32_t *num_shares,
			       char ***share_names);

/**
 * @brief Check if a share/service of a given name exists.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] servicename The service name to check if it exists.
 *
 * @return              True if it exists, false if not.
 */
bool smbconf_share_exists(struct smbconf_ctx *ctx, const char *servicename);

/**
 * @brief Add a service if it does not already exist.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] servicename The name of the service to add.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_create_share(struct smbconf_ctx *ctx, const char *servicename);

/**
 * @brief Get a definition of a share (service) from configuration.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] mem_ctx   A memory context to allocate the result.
 *
 * @param[in] servicename The service name to get the information from.
 *
 * @param[out] service  A pointer to store the service information about the
 *                      share.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 *
 * @see smbconf_service
 */
sbcErr smbconf_get_share(struct smbconf_ctx *ctx,
			 TALLOC_CTX *mem_ctx,
			 const char *servicename,
			 struct smbconf_service **service);

/**
 * @brief Delete a service from configuration.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] servicename The service name to delete.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_delete_share(struct smbconf_ctx *ctx,
			    const char *servicename);

/**
 * @brief Set a configuration parameter to the value provided.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] service   The service name to set the parameter.
 *
 * @param[in] param     The name of the parameter to set.
 *
 * @param[in] valstr    The value to set.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_set_parameter(struct smbconf_ctx *ctx,
			     const char *service,
			     const char *param,
			     const char *valstr);

/**
 * @brief Set a global configuration parameter to the value provided.
 *
 * This adds a paramet in the [global] service. It also creates [global] if it
 * does't exist.
 *
 * @param[in] ctx       The smbconf context to use.
 *
 * @param[in] param     The name of the parameter to set.
 *
 * @param[in] val       The value to set.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_set_global_parameter(struct smbconf_ctx *ctx,
				    const char *param, const char *val);

/**
 * @brief Get the value of a configuration parameter as a string.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  mem_ctx  The memory context to allocate the string on.
 *
 * @param[in]  service  The name of the service where to find the parameter.
 *
 * @param[in]  param    The parameter to get.
 *
 * @param[out] valstr   A pointer to store the value as a string.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_get_parameter(struct smbconf_ctx *ctx,
			     TALLOC_CTX *mem_ctx,
			     const char *service,
			     const char *param,
			     char **valstr);

/**
 * @brief Get the value of a global configuration parameter as a string.
 *
 * It also creates [global] if it does't exist.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  mem_ctx  The memory context to allocate the string on.
 *
 * @param[in]  param    The parameter to get.
 *
 * @param[out] valstr   A pointer to store the value as a string.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_get_global_parameter(struct smbconf_ctx *ctx,
				    TALLOC_CTX *mem_ctx,
				    const char *param,
				    char **valstr);

/**
 * @brief Delete a parameter from the configuration.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in] service   The service where the parameter can be found.
 *
 * @param[in] param     The name of the parameter to delete.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_delete_parameter(struct smbconf_ctx *ctx,
				const char *service, const char *param);

/**
 * @brief Delete a global parameter from the configuration.
 *
 * It also creates [global] if it does't exist.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in] param     The name of the parameter to delete.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_delete_global_parameter(struct smbconf_ctx *ctx,
				       const char *param);

/**
 * @brief Get the list of names of included files.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  mem_ctx  The memory context to allocate the names.
 *
 * @param[in]  service  The service name to get the include files.
 *
 * @param[out] num_includes A pointer to store the number of included files.
 *
 * @param[out] includes A pointer to store the paths of the included files.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_get_includes(struct smbconf_ctx *ctx,
			    TALLOC_CTX *mem_ctx,
			    const char *service,
			    uint32_t *num_includes, char ***includes);

/**
 * @brief Get the list of globally included files.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  mem_ctx  The memory context to allocate the names.
 *
 * @param[out] num_includes A pointer to store the number of included files.
 *
 * @param[out] includes A pointer to store the paths of the included files.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_get_global_includes(struct smbconf_ctx *ctx,
				   TALLOC_CTX *mem_ctx,
				   uint32_t *num_includes, char ***includes);

/**
 * @brief Set a list of config files to include on the given service.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  service  The service to add includes.
 *
 * @param[in]  num_includes The number of includes to set.
 *
 * @param[in]  includes A list of paths to include.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_set_includes(struct smbconf_ctx *ctx,
			    const char *service,
			    uint32_t num_includes, const char **includes);

/**
 * @brief Set a list of config files to include globally.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  num_includes The number of includes to set.
 *
 * @param[in]  includes A list of paths to include.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_set_global_includes(struct smbconf_ctx *ctx,
				   uint32_t num_includes,
				   const char **includes);

/**
 * @brief Delete include parameter on the given service.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @param[in]  service  The name of the service to delete the includes from.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_delete_includes(struct smbconf_ctx *ctx, const char *service);

/**
 * @brief Delete include parameter from the global service.
 *
 * @param[in]  ctx      The smbconf context to use.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_delete_global_includes(struct smbconf_ctx *ctx);

/**
 * @brief Start a transaction on the configuration backend.
 *
 * This is to speed up writes to the registry based backend.
 *
 * @param[in] ctx       The smbconf context to start the transaction.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 */
sbcErr smbconf_transaction_start(struct smbconf_ctx *ctx);

/**
 * @brief Commit a transaction on the configuration backend.
 *
 * This is to speed up writes to the registry based backend.
 *
 * @param[in] ctx       The smbconf context to commit the transaction.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 *
 * @see smbconf_transaction_start()
 */
sbcErr smbconf_transaction_commit(struct smbconf_ctx *ctx);

/**
 * @brief Cancel a transaction on the configuration backend.
 *
 * @param[in] ctx       The smbconf context to cancel the transaction.
 *
 * @return              SBC_ERR_OK on success, a corresponding sbcErr if an
 *                      error occured.
 *
 * @see smbconf_transaction_start()
 */
sbcErr smbconf_transaction_cancel(struct smbconf_ctx *ctx);

/* @} ******************************************************************/

#endif /*  _LIBSMBCONF_H_  */