Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : simple ldb tdb dump util
4 : Copyright (C) Andrew Tridgell 2001
5 : Copyright (C) Andrew Bartlett 2012
6 :
7 : This program is free software; you can redistribute it and/or modify
8 : it under the terms of the GNU General Public License as published by
9 : the Free Software Foundation; either version 3 of the License, or
10 : (at your option) any later version.
11 :
12 : This program is distributed in the hope that it will be useful,
13 : but WITHOUT ANY WARRANTY; without even the implied warranty of
14 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 : GNU General Public License for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with this program. If not, see <http://www.gnu.org/licenses/>.
19 : */
20 :
21 : #include "replace.h"
22 : #include "system/locale.h"
23 : #include "system/time.h"
24 : #include "system/filesys.h"
25 : #include "system/wait.h"
26 : #include <tdb.h>
27 : #include <ldb.h>
28 : #include <ldb_private.h>
29 :
30 : #ifdef HAVE_LMDB
31 : #include <lmdb.h>
32 : #endif /* ifdef HAVE_LMDB */
33 :
34 :
35 : static struct ldb_context *ldb;
36 : bool show_index = false;
37 : bool validate_contents = false;
38 :
39 90042 : static void print_data(TDB_DATA d)
40 : {
41 90042 : unsigned char *p = (unsigned char *)d.dptr;
42 90042 : int len = d.dsize;
43 4318028 : while (len--) {
44 4227986 : if (isprint(*p) && !strchr("\"\\", *p)) {
45 4036971 : fputc(*p, stdout);
46 : } else {
47 191015 : printf("\\%02X", *p);
48 : }
49 4227986 : p++;
50 : }
51 90042 : }
52 :
53 90042 : static unsigned int pull_uint32(uint8_t *p)
54 : {
55 90042 : return p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
56 : }
57 :
58 :
59 90042 : static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA _dbuf, void *state)
60 : {
61 90042 : int ret, i, j;
62 90042 : struct ldb_dn *dn = state;
63 90042 : struct ldb_message *msg = ldb_msg_new(NULL);
64 90042 : struct ldb_val dbuf = {
65 0 : .data = _dbuf.dptr,
66 90042 : .length = _dbuf.dsize,
67 : };
68 90042 : struct ldb_ldif ldif = {
69 : .msg = msg,
70 : .changetype = LDB_CHANGETYPE_NONE
71 : };
72 90042 : if (!msg) {
73 0 : return -1;
74 : }
75 :
76 90042 : ret = ldb_unpack_data(ldb, &dbuf, msg);
77 90042 : if (ret != 0) {
78 0 : fprintf(stderr, "Failed to parse record %*.*s as an LDB record\n", (int)key.dsize, (int)key.dsize, (char *)key.dptr);
79 0 : TALLOC_FREE(msg);
80 0 : return 0;
81 : }
82 :
83 90042 : if (dn && ldb_dn_compare(msg->dn, dn) != 0) {
84 0 : TALLOC_FREE(msg);
85 0 : return 0;
86 : }
87 :
88 90042 : if (!show_index && ldb_dn_is_special(msg->dn)) {
89 0 : const char *dn_lin = ldb_dn_get_linearized(msg->dn);
90 0 : if ((strcmp(dn_lin, "@BASEINFO") == 0) || (strncmp(dn_lin, "@INDEX:", strlen("@INDEX:")) == 0)) {
91 : /*
92 : the user has asked not to show index
93 : records. Also exclude BASEINFO as it
94 : contains meta-data which will be re-created
95 : if this database is restored
96 : */
97 0 : TALLOC_FREE(msg);
98 0 : return 0;
99 : }
100 : }
101 :
102 90042 : printf("# key: ");
103 90042 : print_data(key);
104 90042 : printf("\n# pack format: %#010x\n", pull_uint32(_dbuf.dptr));
105 :
106 90042 : if (!validate_contents || ldb_dn_is_special(msg->dn)) {
107 90042 : ldb_ldif_write_file(ldb, stdout, &ldif);
108 90042 : TALLOC_FREE(msg);
109 90042 : return 0;
110 : }
111 :
112 0 : for (i=0;i<msg->num_elements;i++) {
113 0 : const struct ldb_schema_attribute *a;
114 :
115 0 : a = ldb_schema_attribute_by_name(ldb, msg->elements[i].name);
116 0 : for (j=0;j<msg->elements[i].num_values;j++) {
117 0 : struct ldb_val v;
118 0 : ret = a->syntax->ldif_write_fn(ldb, msg, &msg->elements[i].values[j], &v);
119 0 : if (ret != 0) {
120 0 : v = msg->elements[i].values[j];
121 0 : if (ldb_should_b64_encode(ldb, &v)) {
122 0 : v.data = (uint8_t *)ldb_base64_encode(ldb, (char *)v.data, v.length);
123 0 : v.length = strlen((char *)v.data);
124 : }
125 0 : fprintf(stderr, "On %s element %s value %d (%*.*s) failed to convert to LDIF correctly, skipping possibly corrupt record\n",
126 : ldb_dn_get_linearized(msg->dn),
127 0 : msg->elements[i].name,
128 0 : j, (int)v.length, (int)v.length,
129 : v.data);
130 0 : TALLOC_FREE(msg);
131 0 : return 0;
132 : }
133 : }
134 : }
135 0 : ldb_ldif_write_file(ldb, stdout, &ldif);
136 0 : TALLOC_FREE(msg);
137 :
138 0 : return 0;
139 : }
140 :
141 : static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
142 : const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
143 :
144 0 : static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
145 : const char *fmt, ...)
146 : {
147 0 : va_list ap;
148 0 : const char *name = tdb_name(tdb);
149 0 : const char *prefix = "";
150 :
151 0 : if (!name)
152 0 : name = "unnamed";
153 :
154 0 : switch (level) {
155 0 : case TDB_DEBUG_ERROR:
156 0 : prefix = "ERROR: ";
157 0 : break;
158 0 : case TDB_DEBUG_WARNING:
159 0 : prefix = "WARNING: ";
160 0 : break;
161 0 : case TDB_DEBUG_TRACE:
162 0 : return;
163 :
164 0 : default:
165 : case TDB_DEBUG_FATAL:
166 0 : prefix = "FATAL: ";
167 0 : break;
168 : }
169 :
170 0 : va_start(ap, fmt);
171 0 : fprintf(stderr, "tdb(%s): %s", name, prefix);
172 0 : vfprintf(stderr, fmt, ap);
173 0 : va_end(ap);
174 : }
175 :
176 0 : static void emergency_walk(TDB_DATA key, TDB_DATA dbuf, void *keyname)
177 : {
178 0 : traverse_fn(NULL, key, dbuf, keyname);
179 0 : }
180 :
181 48 : static int dump_tdb(const char *fname, struct ldb_dn *dn, bool emergency)
182 : {
183 48 : TDB_CONTEXT *tdb;
184 48 : struct tdb_logging_context logfn = {
185 : .log_fn = log_stderr,
186 : };
187 :
188 48 : tdb = tdb_open_ex(fname, 0, 0, O_RDONLY, 0, &logfn, NULL);
189 48 : if (!tdb) {
190 0 : fprintf(stderr, "Failed to open %s\n", fname);
191 0 : return 1;
192 : }
193 :
194 48 : if (emergency) {
195 0 : return tdb_rescue(tdb, emergency_walk, dn) == 0;
196 : }
197 48 : return tdb_traverse(tdb, traverse_fn, dn) == -1 ? 1 : 0;
198 : }
199 :
200 : #ifdef HAVE_LMDB
201 58 : static int dump_lmdb(const char *fname, struct ldb_dn *dn, bool emergency)
202 : {
203 58 : int ret;
204 58 : struct MDB_env *env = NULL;
205 58 : struct MDB_txn *txn = NULL;
206 58 : MDB_dbi dbi;
207 58 : struct MDB_cursor *cursor = NULL;
208 58 : struct MDB_val key;
209 58 : struct MDB_val data;
210 :
211 58 : ret = mdb_env_create(&env);
212 58 : if (ret != 0) {
213 0 : fprintf(stderr,
214 : "Could not create MDB environment: (%d) %s\n",
215 : ret,
216 : mdb_strerror(ret));
217 0 : goto close_env;
218 : }
219 :
220 58 : ret = mdb_env_open(env,
221 : fname,
222 : MDB_NOSUBDIR|MDB_NOTLS|MDB_RDONLY,
223 : 0600);
224 58 : if (ret != 0) {
225 48 : fprintf(stderr,
226 : "Could not open environment for %s: (%d) %s\n",
227 : fname,
228 : ret,
229 : mdb_strerror(ret));
230 48 : goto close_env;
231 : }
232 :
233 10 : ret = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn);
234 10 : if (ret != 0) {
235 0 : fprintf(stderr,
236 : "Could not start transaction: (%d) %s\n",
237 : ret,
238 : mdb_strerror(ret));
239 0 : goto close_env;
240 : }
241 :
242 10 : ret = mdb_dbi_open(txn, NULL, 0, &dbi);
243 10 : if (ret != 0) {
244 0 : fprintf(stderr,
245 : "Could not open database: (%d) %s\n",
246 : ret,
247 : mdb_strerror(ret));
248 0 : goto close_txn;
249 : }
250 :
251 10 : ret = mdb_cursor_open(txn, dbi, &cursor);
252 10 : if (ret != 0) {
253 0 : fprintf(stderr,
254 : "Could not open cursor: (%d) %s\n",
255 : ret,
256 : mdb_strerror(ret));
257 0 : goto close_txn;
258 : }
259 :
260 10 : ret = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
261 10 : if (ret != 0 && ret != MDB_NOTFOUND) {
262 0 : fprintf(stderr,
263 : "Could not find first record: (%d) %s\n",
264 : ret,
265 : mdb_strerror(ret));
266 0 : goto close_cursor;
267 : }
268 44730 : while (ret != MDB_NOTFOUND) {
269 44720 : struct TDB_DATA tkey = {
270 44720 : .dptr = key.mv_data,
271 44720 : .dsize = key.mv_size
272 : };
273 44720 : struct TDB_DATA tdata = {
274 44720 : .dptr = data.mv_data,
275 44720 : .dsize = data.mv_size
276 : };
277 44720 : traverse_fn(NULL, tkey, tdata, dn);
278 44720 : ret = mdb_cursor_get(cursor, &key, &data, MDB_NEXT);
279 44720 : if (ret != 0 && ret != MDB_NOTFOUND) {
280 0 : fprintf(stderr,
281 : "Could not read next record: (%d) %s\n",
282 : ret,
283 : mdb_strerror(ret));
284 0 : goto close_cursor;
285 : }
286 : }
287 0 : ret = 0;
288 :
289 10 : close_cursor:
290 10 : mdb_cursor_close(cursor);
291 10 : close_txn:
292 10 : mdb_txn_commit(txn);
293 58 : close_env:
294 58 : mdb_env_close(env);
295 :
296 58 : if (ret != 0) {
297 48 : return 1;
298 : }
299 0 : return 0;
300 :
301 : }
302 : #else
303 : static int dump_lmdb(const char *fname, struct ldb_dn *dn, bool emergency)
304 : {
305 : /* not built with lmdb support */
306 : return 1;
307 : }
308 : #endif /* #ifdef HAVE_LMDB */
309 :
310 2 : static void usage( void)
311 : {
312 2 : printf( "Usage: ldbdump [options] <filename>\n\n");
313 2 : printf( " -h this help message\n");
314 2 : printf( " -d DN dumps DN only\n");
315 2 : printf( " -e emergency dump, for corrupt databases\n");
316 2 : printf( " -i include index and @BASEINFO records in dump\n");
317 2 : printf( " -c validate contents of the records\n");
318 2 : }
319 :
320 60 : int main(int argc, char *argv[])
321 : {
322 60 : bool emergency = false;
323 58 : int c, rc;
324 58 : char *fname;
325 60 : struct ldb_dn *dn = NULL;
326 :
327 60 : ldb = ldb_init(NULL, NULL);
328 60 : if (ldb == NULL) {
329 0 : fprintf(stderr, "ldb: ldb_init failed()");
330 0 : exit(1);
331 : }
332 :
333 60 : rc = ldb_modules_hook(ldb, LDB_MODULE_HOOK_CMDLINE_PRECONNECT);
334 60 : if (rc != LDB_SUCCESS) {
335 0 : fprintf(stderr, "ldb: failed to run preconnect hooks (needed to get Samba LDIF handlers): %s\n", ldb_strerror(rc));
336 0 : exit(1);
337 : }
338 :
339 60 : if (argc < 2) {
340 0 : printf("Usage: ldbdump <fname>\n");
341 0 : exit(1);
342 : }
343 :
344 118 : while ((c = getopt( argc, argv, "hd:eic")) != -1) {
345 60 : switch (c) {
346 1 : case 'h':
347 1 : usage();
348 1 : exit( 0);
349 0 : case 'd':
350 0 : dn = ldb_dn_new(ldb, ldb, optarg);
351 0 : if (!dn) {
352 0 : fprintf(stderr, "ldb failed to parse %s as a DN\n", optarg);
353 0 : exit(1);
354 : }
355 0 : break;
356 0 : case 'e':
357 0 : emergency = true;
358 0 : break;
359 58 : case 'i':
360 58 : show_index = true;
361 58 : break;
362 0 : case 'c':
363 0 : validate_contents = true;
364 0 : break;
365 1 : default:
366 1 : usage();
367 1 : exit( 1);
368 : }
369 : }
370 :
371 58 : fname = argv[optind];
372 :
373 58 : rc = dump_lmdb(fname, dn, emergency);
374 58 : if (rc != 0) {
375 48 : rc = dump_tdb(fname, dn, emergency);
376 48 : if (rc != 0) {
377 0 : fprintf(stderr, "Failed to open %s\n", fname);
378 0 : return 1;
379 : }
380 : }
381 0 : return 0;
382 :
383 : }
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