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s3: Add sock_packet_read
[Samba/vl.git] / source3 / printing / nt_printing_tdb.c
blob94671983a02ad0865ee5d5286de3ebdcef233162
1 /*
2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (c) Andrew Tridgell 1992-2000,
5 * Copyright (c) Jean François Micouleau 1998-2000.
6 * Copyright (c) Gerald Carter 2002-2005.
7 * Copyright (c) Andreas Schneider 2010.
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 "printing/nt_printing_tdb.h"
25 #include "librpc/gen_ndr/spoolss.h"
26 #include "librpc/gen_ndr/ndr_security.h"
27 #include "libcli/security/security.h"
28
29 #define FORMS_PREFIX "FORMS/"
30 #define DRIVERS_PREFIX "DRIVERS/"
31 #define PRINTERS_PREFIX "PRINTERS/"
32 #define SECDESC_PREFIX "SECDESC/"
33
34 #define NTDRIVERS_DATABASE_VERSION_1 1
35 #define NTDRIVERS_DATABASE_VERSION_2 2
36 #define NTDRIVERS_DATABASE_VERSION_3 3 /* little endian version of v2 */
37 #define NTDRIVERS_DATABASE_VERSION_4 4 /* fix generic bits in security descriptors */
38 #define NTDRIVERS_DATABASE_VERSION_5 5 /* normalize keys in ntprinters.tdb */
39
40 static TDB_CONTEXT *tdb_forms; /* used for forms files */
41 static TDB_CONTEXT *tdb_drivers; /* used for driver files */
42 static TDB_CONTEXT *tdb_printers; /* used for printers files */
43
44 /****************************************************************************
45 generate a new TDB_DATA key for storing a printer
46 ****************************************************************************/
47
48 static TDB_DATA make_printer_tdbkey(TALLOC_CTX *ctx, const char *sharename )
49 {
50 fstring share;
51 char *keystr = NULL;
52 TDB_DATA key;
53
54 fstrcpy(share, sharename);
55 strlower_m(share);
56
57 keystr = talloc_asprintf(ctx, "%s%s", PRINTERS_PREFIX, share);
58 key = string_term_tdb_data(keystr ? keystr : "");
59
60 return key;
61 }
62
63 /****************************************************************************
64 generate a new TDB_DATA key for storing a printer security descriptor
65 ****************************************************************************/
66
67 static TDB_DATA make_printers_secdesc_tdbkey(TALLOC_CTX *ctx,
68 const char* sharename )
69 {
70 fstring share;
71 char *keystr = NULL;
72 TDB_DATA key;
73
74 fstrcpy(share, sharename );
75 strlower_m(share);
76
77 keystr = talloc_asprintf(ctx, "%s%s", SECDESC_PREFIX, share);
78 key = string_term_tdb_data(keystr ? keystr : "");
79
80 return key;
81 }
82
83 /****************************************************************************
84 Upgrade the tdb files to version 3
85 ****************************************************************************/
86
87 static bool upgrade_to_version_3(void)
88 {
89 TDB_DATA kbuf, newkey, dbuf;
90
91 DEBUG(0,("upgrade_to_version_3: upgrading print tdb's to version 3\n"));
92
93 for (kbuf = tdb_firstkey(tdb_drivers); kbuf.dptr;
94 newkey = tdb_nextkey(tdb_drivers, kbuf), free(kbuf.dptr), kbuf=newkey) {
95
96 dbuf = tdb_fetch(tdb_drivers, kbuf);
97
98 if (strncmp((const char *)kbuf.dptr, FORMS_PREFIX, strlen(FORMS_PREFIX)) == 0) {
99 DEBUG(0,("upgrade_to_version_3:moving form\n"));
100 if (tdb_store(tdb_forms, kbuf, dbuf, TDB_REPLACE) != 0) {
101 SAFE_FREE(dbuf.dptr);
102 DEBUG(0,("upgrade_to_version_3: failed to move form. Error (%s).\n", tdb_errorstr(tdb_forms)));
103 return False;
104 }
105 if (tdb_delete(tdb_drivers, kbuf) != 0) {
106 SAFE_FREE(dbuf.dptr);
107 DEBUG(0,("upgrade_to_version_3: failed to delete form. Error (%s)\n", tdb_errorstr(tdb_drivers)));
108 return False;
109 }
110 }
111
112 if (strncmp((const char *)kbuf.dptr, PRINTERS_PREFIX, strlen(PRINTERS_PREFIX)) == 0) {
113 DEBUG(0,("upgrade_to_version_3:moving printer\n"));
114 if (tdb_store(tdb_printers, kbuf, dbuf, TDB_REPLACE) != 0) {
115 SAFE_FREE(dbuf.dptr);
116 DEBUG(0,("upgrade_to_version_3: failed to move printer. Error (%s)\n", tdb_errorstr(tdb_printers)));
117 return False;
118 }
119 if (tdb_delete(tdb_drivers, kbuf) != 0) {
120 SAFE_FREE(dbuf.dptr);
121 DEBUG(0,("upgrade_to_version_3: failed to delete printer. Error (%s)\n", tdb_errorstr(tdb_drivers)));
122 return False;
123 }
124 }
125
126 if (strncmp((const char *)kbuf.dptr, SECDESC_PREFIX, strlen(SECDESC_PREFIX)) == 0) {
127 DEBUG(0,("upgrade_to_version_3:moving secdesc\n"));
128 if (tdb_store(tdb_printers, kbuf, dbuf, TDB_REPLACE) != 0) {
129 SAFE_FREE(dbuf.dptr);
130 DEBUG(0,("upgrade_to_version_3: failed to move secdesc. Error (%s)\n", tdb_errorstr(tdb_printers)));
131 return False;
132 }
133 if (tdb_delete(tdb_drivers, kbuf) != 0) {
134 SAFE_FREE(dbuf.dptr);
135 DEBUG(0,("upgrade_to_version_3: failed to delete secdesc. Error (%s)\n", tdb_errorstr(tdb_drivers)));
136 return False;
137 }
138 }
139
140 SAFE_FREE(dbuf.dptr);
141 }
142
143 return True;
144 }
145
146 /*******************************************************************
147 Fix an issue with security descriptors. Printer sec_desc must
148 use more than the generic bits that were previously used
149 in <= 3.0.14a. They must also have a owner and group SID assigned.
150 Otherwise, any printers than have been migrated to a Windows
151 host using printmig.exe will not be accessible.
152 *******************************************************************/
153
154 static int sec_desc_upg_fn( TDB_CONTEXT *the_tdb, TDB_DATA key,
155 TDB_DATA data, void *state )
156 {
157 NTSTATUS status;
158 struct sec_desc_buf *sd_orig = NULL;
159 struct sec_desc_buf *sd_new, *sd_store;
160 struct security_descriptor *sec, *new_sec;
161 TALLOC_CTX *ctx = state;
162 int result, i;
163 uint32 sd_size;
164 size_t size_new_sec;
165
166 if (!data.dptr || data.dsize == 0) {
167 return 0;
168 }
169
170 if ( strncmp((const char *) key.dptr, SECDESC_PREFIX, strlen(SECDESC_PREFIX) ) != 0 ) {
171 return 0;
172 }
173
174 /* upgrade the security descriptor */
175
176 status = unmarshall_sec_desc_buf(ctx, data.dptr, data.dsize, &sd_orig);
177 if (!NT_STATUS_IS_OK(status)) {
178 /* delete bad entries */
179 DEBUG(0,("sec_desc_upg_fn: Failed to parse original sec_desc for %si. Deleting....\n",
180 (const char *)key.dptr ));
181 tdb_delete( tdb_printers, key );
182 return 0;
183 }
184
185 if (!sd_orig) {
186 return 0;
187 }
188 sec = sd_orig->sd;
189
190 /* is this even valid? */
191
192 if ( !sec->dacl ) {
193 return 0;
194 }
195
196 /* update access masks */
197
198 for ( i=0; i<sec->dacl->num_aces; i++ ) {
199 switch ( sec->dacl->aces[i].access_mask ) {
200 case (GENERIC_READ_ACCESS | GENERIC_WRITE_ACCESS | GENERIC_EXECUTE_ACCESS):
201 sec->dacl->aces[i].access_mask = PRINTER_ACE_PRINT;
202 break;
203
204 case GENERIC_ALL_ACCESS:
205 sec->dacl->aces[i].access_mask = PRINTER_ACE_FULL_CONTROL;
206 break;
207
208 case READ_CONTROL_ACCESS:
209 sec->dacl->aces[i].access_mask = PRINTER_ACE_MANAGE_DOCUMENTS;
210
211 default: /* no change */
212 break;
213 }
214 }
215
216 /* create a new struct security_descriptor with the appropriate owner and group SIDs */
217
218 new_sec = make_sec_desc( ctx, SD_REVISION, SEC_DESC_SELF_RELATIVE,
219 &global_sid_Builtin_Administrators,
220 &global_sid_Builtin_Administrators,
221 NULL, NULL, &size_new_sec );
222 if (!new_sec) {
223 return 0;
224 }
225 sd_new = make_sec_desc_buf( ctx, size_new_sec, new_sec );
226 if (!sd_new) {
227 return 0;
228 }
229
230 if ( !(sd_store = sec_desc_merge_buf( ctx, sd_new, sd_orig )) ) {
231 DEBUG(0,("sec_desc_upg_fn: Failed to update sec_desc for %s\n", key.dptr ));
232 return 0;
233 }
234
235 /* store it back */
236
237 sd_size = ndr_size_security_descriptor(sd_store->sd, 0)
238 + sizeof(struct sec_desc_buf);
239
240 status = marshall_sec_desc_buf(ctx, sd_store, &data.dptr, &data.dsize);
241 if (!NT_STATUS_IS_OK(status)) {
242 DEBUG(0,("sec_desc_upg_fn: Failed to parse new sec_desc for %s\n", key.dptr ));
243 return 0;
244 }
245
246 result = tdb_store( tdb_printers, key, data, TDB_REPLACE );
247
248 /* 0 to continue and non-zero to stop traversal */
249
250 return (result == -1);
251 }
252
253 /*******************************************************************
254 Upgrade the tdb files to version 4
255 *******************************************************************/
256
257 static bool upgrade_to_version_4(void)
258 {
259 TALLOC_CTX *ctx;
260 int result;
261
262 DEBUG(0,("upgrade_to_version_4: upgrading printer security descriptors\n"));
263
264 if ( !(ctx = talloc_init( "upgrade_to_version_4" )) )
265 return False;
266
267 result = tdb_traverse( tdb_printers, sec_desc_upg_fn, ctx );
268
269 talloc_destroy( ctx );
270
271 return ( result != -1 );
272 }
273
274 /*******************************************************************
275 Fix an issue with security descriptors. Printer sec_desc must
276 use more than the generic bits that were previously used
277 in <= 3.0.14a. They must also have a owner and group SID assigned.
278 Otherwise, any printers than have been migrated to a Windows
279 host using printmig.exe will not be accessible.
280 *******************************************************************/
281
282 static int normalize_printers_fn( TDB_CONTEXT *the_tdb, TDB_DATA key,
283 TDB_DATA data, void *state )
284 {
285 TALLOC_CTX *ctx = talloc_tos();
286 TDB_DATA new_key;
287
288 if (!data.dptr || data.dsize == 0)
289 return 0;
290
291 /* upgrade printer records and security descriptors */
292
293 if ( strncmp((const char *) key.dptr, PRINTERS_PREFIX, strlen(PRINTERS_PREFIX) ) == 0 ) {
294 new_key = make_printer_tdbkey(ctx, (const char *)key.dptr+strlen(PRINTERS_PREFIX) );
295 }
296 else if ( strncmp((const char *) key.dptr, SECDESC_PREFIX, strlen(SECDESC_PREFIX) ) == 0 ) {
297 new_key = make_printers_secdesc_tdbkey(ctx, (const char *)key.dptr+strlen(SECDESC_PREFIX) );
298 }
299 else {
300 /* ignore this record */
301 return 0;
302 }
303
304 /* delete the original record and store under the normalized key */
305
306 if ( tdb_delete( the_tdb, key ) != 0 ) {
307 DEBUG(0,("normalize_printers_fn: tdb_delete for [%s] failed!\n",
308 key.dptr));
309 return 1;
310 }
311
312 if ( tdb_store( the_tdb, new_key, data, TDB_REPLACE) != 0 ) {
313 DEBUG(0,("normalize_printers_fn: failed to store new record for [%s]!\n",
314 key.dptr));
315 return 1;
316 }
317
318 return 0;
319 }
320
321 /*******************************************************************
322 Upgrade the tdb files to version 5
323 *******************************************************************/
324
325 static bool upgrade_to_version_5(void)
326 {
327 TALLOC_CTX *ctx;
328 int result;
329
330 DEBUG(0,("upgrade_to_version_5: normalizing printer keys\n"));
331
332 if ( !(ctx = talloc_init( "upgrade_to_version_5" )) )
333 return False;
334
335 result = tdb_traverse( tdb_printers, normalize_printers_fn, NULL );
336
337 talloc_destroy( ctx );
338
339 return ( result != -1 );
340 }
341
342 bool nt_printing_tdb_upgrade(void)
343 {
344 const char *drivers_path = state_path("ntdrivers.tdb");
345 const char *printers_path = state_path("ntprinters.tdb");
346 const char *forms_path = state_path("ntforms.tdb");
347 bool drivers_exists = file_exist(drivers_path);
348 bool printers_exists = file_exist(printers_path);
349 bool forms_exists = file_exist(forms_path);
350 const char *vstring = "INFO/version";
351 int32_t vers_id;
352
353 if (!drivers_exists && !printers_exists && !forms_exists) {
354 return true;
355 }
356
357 tdb_drivers = tdb_open_log(drivers_path,
358 0,
359 TDB_DEFAULT,
360 O_RDWR|O_CREAT,
361 0600);
362 if (tdb_drivers == NULL) {
363 DEBUG(0,("nt_printing_init: Failed to open nt drivers "
364 "database %s (%s)\n",
365 drivers_path, strerror(errno)));
366 return false;
367 }
368
369 tdb_printers = tdb_open_log(printers_path,
370 0,
371 TDB_DEFAULT,
372 O_RDWR|O_CREAT,
373 0600);
374 if (tdb_printers == NULL) {
375 DEBUG(0,("nt_printing_init: Failed to open nt printers "
376 "database %s (%s)\n",
377 printers_path, strerror(errno)));
378 return false;
379 }
380
381 tdb_forms = tdb_open_log(forms_path,
382 0,
383 TDB_DEFAULT,
384 O_RDWR|O_CREAT,
385 0600);
386 if (tdb_forms == NULL) {
387 DEBUG(0,("nt_printing_init: Failed to open nt forms "
388 "database %s (%s)\n",
389 forms_path, strerror(errno)));
390 return false;
391 }
392
393 /* Samba upgrade */
394 vers_id = tdb_fetch_int32(tdb_drivers, vstring);
395 if (vers_id == -1) {
396 DEBUG(10, ("Fresh database\n"));
397 tdb_store_int32(tdb_drivers, vstring, NTDRIVERS_DATABASE_VERSION_5);
398 vers_id = NTDRIVERS_DATABASE_VERSION_5;
399 }
400
401 if (vers_id != NTDRIVERS_DATABASE_VERSION_5) {
402 if ((vers_id == NTDRIVERS_DATABASE_VERSION_1) ||
403 (IREV(vers_id) == NTDRIVERS_DATABASE_VERSION_1)) {
404 if (!upgrade_to_version_3()) {
405 return false;
406 }
407
408 tdb_store_int32(tdb_drivers, vstring, NTDRIVERS_DATABASE_VERSION_3);
409 vers_id = NTDRIVERS_DATABASE_VERSION_3;
410 }
411
412 if ((vers_id == NTDRIVERS_DATABASE_VERSION_2) ||
413 (IREV(vers_id) == NTDRIVERS_DATABASE_VERSION_2)) {
414 /*
415 * Written on a bigendian machine with old fetch_int
416 * code. Save as le. The only upgrade between V2 and V3
417 * is to save the version in little-endian.
418 */
419 tdb_store_int32(tdb_drivers, vstring, NTDRIVERS_DATABASE_VERSION_3);
420 vers_id = NTDRIVERS_DATABASE_VERSION_3;
421 }
422
423 if (vers_id == NTDRIVERS_DATABASE_VERSION_3) {
424 if (!upgrade_to_version_4()) {
425 return false;
426 }
427 tdb_store_int32(tdb_drivers, vstring, NTDRIVERS_DATABASE_VERSION_4);
428 vers_id = NTDRIVERS_DATABASE_VERSION_4;
429 }
430
431 if (vers_id == NTDRIVERS_DATABASE_VERSION_4 ) {
432 if (!upgrade_to_version_5()) {
433 return false;
434 }
435 tdb_store_int32(tdb_drivers, vstring, NTDRIVERS_DATABASE_VERSION_5);
436 vers_id = NTDRIVERS_DATABASE_VERSION_5;
437 }
438
439 if (vers_id != NTDRIVERS_DATABASE_VERSION_5) {
440 DEBUG(0,("nt_printing_init: Unknown printer database version [%d]\n", vers_id));
441 return false;
442 }
443 }
444
445 if (tdb_drivers) {
446 tdb_close(tdb_drivers);
447 tdb_drivers = NULL;
448 }
449
450 if (tdb_printers) {
451 tdb_close(tdb_printers);
452 tdb_printers = NULL;
453 }
454
455 if (tdb_forms) {
456 tdb_close(tdb_forms);
457 tdb_forms = NULL;
458 }
459
460 return true;
461 }