2 * This file is part of GNUnet
3 * (C) 2009, 2011, 2012 Christian Grothoff (and other contributing authors)
5 * GNUnet is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published
7 * by the Free Software Foundation; either version 3, or (at your
8 * option) any later version.
10 * GNUnet is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with GNUnet; see the file COPYING. If not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * @file namestore/plugin_namestore_sqlite.c
23 * @brief sqlite-based namestore backend
24 * @author Christian Grothoff
28 #include "gnunet_namestore_plugin.h"
29 #include "gnunet_namestore_service.h"
30 #include "namestore.h"
34 * After how many ms "busy" should a DB operation fail for good?
35 * A low value makes sure that we are more responsive to requests
36 * (especially PUTs). A high value guarantees a higher success
37 * rate (SELECTs in iterate can take several seconds despite LIMIT=1).
39 * The default value of 1s should ensure that users do not experience
40 * huge latencies while at the same time allowing operations to succeed
41 * with reasonable probability.
43 #define BUSY_TIMEOUT_MS 1000
47 * Log an error message at log-level 'level' that indicates
48 * a failure of the command 'cmd' on file 'filename'
49 * with the message given by strerror(errno).
51 #define LOG_SQLITE(db, level, cmd) do { GNUNET_log_from (level, "namestore-sqlite", _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, sqlite3_errmsg(db->dbh)); } while(0)
53 #define LOG(kind,...) GNUNET_log_from (kind, "namestore-sqlite", __VA_ARGS__)
57 * Context for all functions in this plugin.
62 const struct GNUNET_CONFIGURATION_Handle *cfg;
70 * Native SQLite database handle.
75 * Precompiled SQL for put record
77 sqlite3_stmt *put_records;
80 * Precompiled SQL for remove record
82 sqlite3_stmt *remove_records;
85 * Precompiled SQL for iterate over all records.
87 sqlite3_stmt *iterate_all;
90 * Precompiled SQL for iterate records with same name.
92 sqlite3_stmt *iterate_by_name;
95 * Precompiled SQL for iterate records with same zone.
97 sqlite3_stmt *iterate_by_zone;
100 * Precompiled SQL for iterate records with same name and zone.
102 sqlite3_stmt *iterate_records;
105 * Precompiled SQL to get the name for a given zone-value.
107 sqlite3_stmt *zone_to_name;
110 * Precompiled SQL for delete zone
112 sqlite3_stmt *delete_zone;
118 * @brief Prepare a SQL statement
120 * @param dbh handle to the database
121 * @param zSql SQL statement, UTF-8 encoded
122 * @param ppStmt set to the prepared statement
123 * @return 0 on success
126 sq_prepare (sqlite3 * dbh, const char *zSql, sqlite3_stmt ** ppStmt)
132 sqlite3_prepare_v2 (dbh, zSql, strlen (zSql), ppStmt,
133 (const char **) &dummy);
134 LOG (GNUNET_ERROR_TYPE_DEBUG,
135 "Prepared `%s' / %p: %d\n", zSql, *ppStmt, result);
141 * Create our database indices.
143 * @param dbh handle to the database
146 create_indices (sqlite3 * dbh)
150 sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone_name_rv ON ns091records (zone_hash,record_name_hash,rvalue)",
151 NULL, NULL, NULL)) ||
153 sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone_delegation ON ns091records (zone_hash,zone_delegation)",
154 NULL, NULL, NULL)) ||
156 sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone_rv ON ns091records (zone_hash,rvalue)",
157 NULL, NULL, NULL)) ||
159 sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone ON ns091records (zone_hash)",
160 NULL, NULL, NULL)) ||
162 sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_name_rv ON ns091records (record_name_hash,rvalue)",
163 NULL, NULL, NULL)) ||
165 sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_rv ON ns091records (rvalue)",
167 LOG (GNUNET_ERROR_TYPE_ERROR,
168 "Failed to create indices: %s\n", sqlite3_errmsg (dbh));
173 #define CHECK(a) GNUNET_break(a)
177 #define ENULL_DEFINED 1
178 #define CHECK(a) if (! a) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "%s\n", e); sqlite3_free(e); }
183 * Initialize the database connections and associated
184 * data structures (create tables and indices
185 * as needed as well).
187 * @param plugin the plugin context (state for this module)
188 * @return GNUNET_OK on success
191 database_setup (struct Plugin *plugin)
200 GNUNET_CONFIGURATION_get_value_filename (plugin->cfg, "namestore-sqlite",
201 "FILENAME", &afsdir))
203 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
204 "namestore-sqlite", "FILENAME");
205 return GNUNET_SYSERR;
207 if (GNUNET_OK != GNUNET_DISK_file_test (afsdir))
209 if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (afsdir))
212 GNUNET_free (afsdir);
213 return GNUNET_SYSERR;
216 /* afsdir should be UTF-8-encoded. If it isn't, it's a bug */
219 /* Open database and precompile statements */
220 if (sqlite3_open (plugin->fn, &plugin->dbh) != SQLITE_OK)
222 LOG (GNUNET_ERROR_TYPE_ERROR,
223 _("Unable to initialize SQLite: %s.\n"),
224 sqlite3_errmsg (plugin->dbh));
225 return GNUNET_SYSERR;
228 sqlite3_exec (plugin->dbh, "PRAGMA temp_store=MEMORY", NULL, NULL,
231 sqlite3_exec (plugin->dbh, "PRAGMA synchronous=NORMAL", NULL, NULL,
234 sqlite3_exec (plugin->dbh, "PRAGMA legacy_file_format=OFF", NULL, NULL,
237 sqlite3_exec (plugin->dbh, "PRAGMA auto_vacuum=INCREMENTAL", NULL,
240 sqlite3_exec (plugin->dbh, "PRAGMA encoding=\"UTF-8\"", NULL,
243 sqlite3_exec (plugin->dbh, "PRAGMA locking_mode=EXCLUSIVE", NULL, NULL,
246 sqlite3_exec (plugin->dbh, "PRAGMA count_changes=OFF", NULL, NULL,
249 sqlite3_exec (plugin->dbh, "PRAGMA page_size=4092", NULL, NULL,
252 CHECK (SQLITE_OK == sqlite3_busy_timeout (plugin->dbh, BUSY_TIMEOUT_MS));
257 sq_prepare (plugin->dbh,
258 "SELECT 1 FROM sqlite_master WHERE tbl_name = 'ns091records'",
260 if ((sqlite3_step (stmt) == SQLITE_DONE) &&
263 "CREATE TABLE ns091records ("
264 " zone_key BLOB NOT NULL DEFAULT '',"
265 " zone_delegation BLOB NOT NULL DEFAULT '',"
266 " zone_hash BLOB NOT NULL DEFAULT '',"
267 " record_count INT NOT NULL DEFAULT 0,"
268 " record_data BLOB NOT NULL DEFAULT '',"
269 " block_expiration_time INT8 NOT NULL DEFAULT 0,"
270 " signature BLOB NOT NULL DEFAULT '',"
271 " record_name TEXT NOT NULL DEFAULT '',"
272 " record_name_hash BLOB NOT NULL DEFAULT '',"
273 " rvalue INT8 NOT NULL DEFAULT ''"
275 NULL, NULL, NULL) != SQLITE_OK))
277 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite3_exec");
278 sqlite3_finalize (stmt);
279 return GNUNET_SYSERR;
281 sqlite3_finalize (stmt);
283 create_indices (plugin->dbh);
287 "INSERT INTO ns091records (zone_key, record_name, record_count, record_data, block_expiration_time, signature, zone_delegation, zone_hash, record_name_hash, rvalue) VALUES "
288 "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
289 &plugin->put_records) != SQLITE_OK) ||
292 "DELETE FROM ns091records WHERE zone_hash=? AND record_name_hash=?",
293 &plugin->remove_records) != SQLITE_OK) ||
296 "SELECT zone_key, record_name, record_count, record_data, block_expiration_time, signature"
297 " FROM ns091records WHERE zone_hash=? AND record_name_hash=? ORDER BY rvalue LIMIT 1 OFFSET ?",
298 &plugin->iterate_records) != SQLITE_OK) ||
301 "SELECT zone_key, record_name, record_count, record_data, block_expiration_time, signature"
302 " FROM ns091records WHERE zone_hash=? ORDER BY rvalue LIMIT 1 OFFSET ?",
303 &plugin->iterate_by_zone) != SQLITE_OK) ||
306 "SELECT zone_key, record_name, record_count, record_data, block_expiration_time, signature"
307 " FROM ns091records WHERE record_name_hash=? ORDER BY rvalue LIMIT 1 OFFSET ?",
308 &plugin->iterate_by_name) != SQLITE_OK) ||
311 "SELECT zone_key, record_name, record_count, record_data, block_expiration_time, signature"
312 " FROM ns091records ORDER BY rvalue LIMIT 1 OFFSET ?",
313 &plugin->iterate_all) != SQLITE_OK) ||
316 "SELECT zone_key, record_name, record_count, record_data, block_expiration_time, signature"
317 " FROM ns091records WHERE zone_hash=? AND zone_delegation=?",
318 &plugin->zone_to_name) != SQLITE_OK) ||
321 "DELETE FROM ns091records WHERE zone_hash=?",
322 &plugin->delete_zone) != SQLITE_OK) )
324 LOG_SQLITE (plugin,GNUNET_ERROR_TYPE_ERROR, "precompiling");
325 return GNUNET_SYSERR;
332 * Shutdown database connection and associate data
334 * @param plugin the plugin context (state for this module)
337 database_shutdown (struct Plugin *plugin)
342 if (NULL != plugin->put_records)
343 sqlite3_finalize (plugin->put_records);
344 if (NULL != plugin->remove_records)
345 sqlite3_finalize (plugin->remove_records);
346 if (NULL != plugin->iterate_records)
347 sqlite3_finalize (plugin->iterate_records);
348 if (NULL != plugin->iterate_by_zone)
349 sqlite3_finalize (plugin->iterate_by_zone);
350 if (NULL != plugin->iterate_by_name)
351 sqlite3_finalize (plugin->iterate_by_name);
352 if (NULL != plugin->iterate_all)
353 sqlite3_finalize (plugin->iterate_all);
354 if (NULL != plugin->zone_to_name)
355 sqlite3_finalize (plugin->zone_to_name);
356 if (NULL != plugin->delete_zone)
357 sqlite3_finalize (plugin->delete_zone);
358 result = sqlite3_close (plugin->dbh);
359 if (result == SQLITE_BUSY)
361 LOG (GNUNET_ERROR_TYPE_WARNING,
362 _("Tried to close sqlite without finalizing all prepared statements.\n"));
363 stmt = sqlite3_next_stmt (plugin->dbh, NULL);
366 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite",
367 "Closing statement %p\n", stmt);
368 result = sqlite3_finalize (stmt);
369 if (result != SQLITE_OK)
370 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "sqlite",
371 "Failed to close statement %p: %d\n", stmt, result);
372 stmt = sqlite3_next_stmt (plugin->dbh, NULL);
374 result = sqlite3_close (plugin->dbh);
376 if (SQLITE_OK != result)
377 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite3_close");
379 GNUNET_free_non_null (plugin->fn);
384 * Removes any existing record in the given zone with the same name.
386 * @param cls closure (internal context for the plugin)
387 * @param zone hash of the public key of the zone
388 * @param name name to remove (at most 255 characters long)
389 * @return GNUNET_OK on success
392 namestore_sqlite_remove_records (void *cls,
393 const struct GNUNET_CRYPTO_ShortHashCode *zone,
396 struct Plugin *plugin = cls;
397 struct GNUNET_CRYPTO_ShortHashCode nh;
401 name_len = strlen (name);
402 GNUNET_CRYPTO_short_hash (name, name_len, &nh);
404 if ((SQLITE_OK != sqlite3_bind_blob (plugin->remove_records, 1, zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ||
405 (SQLITE_OK != sqlite3_bind_blob (plugin->remove_records, 2, &nh, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)))
407 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
408 "sqlite3_bind_XXXX");
409 if (SQLITE_OK != sqlite3_reset (plugin->remove_records))
411 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
413 return GNUNET_SYSERR;
415 n = sqlite3_step (plugin->remove_records);
416 if (SQLITE_OK != sqlite3_reset (plugin->remove_records))
417 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
422 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Record removed\n");
425 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
429 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
431 return GNUNET_SYSERR;
437 * Store a record in the datastore. Removes any existing record in the
438 * same zone with the same name.
440 * @param cls closure (internal context for the plugin)
441 * @param zone_key public key of the zone
442 * @param expire when does the corresponding block in the DHT expire (until
443 * when should we never do a DHT lookup for the same name again)?
444 * @param name name that is being mapped (at most 255 characters long)
445 * @param rd_count number of entries in 'rd' array
446 * @param rd array of records with data to store
447 * @param signature signature of the record block, NULL if signature is unavailable (i.e.
448 * because the user queried for a particular record type only)
449 * @return GNUNET_OK on success, else GNUNET_SYSERR
452 namestore_sqlite_put_records (void *cls,
453 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
454 struct GNUNET_TIME_Absolute expire,
456 unsigned int rd_count,
457 const struct GNUNET_NAMESTORE_RecordData *rd,
458 const struct GNUNET_CRYPTO_RsaSignature *signature)
460 struct Plugin *plugin = cls;
462 struct GNUNET_CRYPTO_ShortHashCode zone;
463 struct GNUNET_CRYPTO_ShortHashCode zone_delegation;
464 struct GNUNET_CRYPTO_ShortHashCode nh;
470 GNUNET_CRYPTO_short_hash (zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone);
471 (void) namestore_sqlite_remove_records (plugin, &zone, name);
472 name_len = strlen (name);
473 GNUNET_CRYPTO_short_hash (name, name_len, &nh);
474 memset (&zone_delegation, 0, sizeof (zone_delegation));
475 for (i=0;i<rd_count;i++)
476 if (rd[i].record_type == GNUNET_NAMESTORE_TYPE_PKEY)
478 GNUNET_assert (sizeof (struct GNUNET_CRYPTO_ShortHashCode) == rd[i].data_size);
479 memcpy (&zone_delegation,
481 sizeof (struct GNUNET_CRYPTO_ShortHashCode));
484 rvalue = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK, UINT64_MAX);
485 data_size = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
486 if (data_size > 64 * 65536)
489 return GNUNET_SYSERR;
492 char data[data_size];
494 if (data_size != GNUNET_NAMESTORE_records_serialize (rd_count, rd,
498 return GNUNET_SYSERR;
500 if ((SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 1, zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), SQLITE_STATIC)) ||
501 (SQLITE_OK != sqlite3_bind_text (plugin->put_records, 2, name, -1, SQLITE_STATIC)) ||
502 (SQLITE_OK != sqlite3_bind_int (plugin->put_records, 3, rd_count)) ||
503 (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 4, data, data_size, SQLITE_STATIC)) ||
504 (SQLITE_OK != sqlite3_bind_int64 (plugin->put_records, 5, expire.abs_value)) ||
505 (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 6, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature), SQLITE_STATIC)) ||
506 (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 7, &zone_delegation, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ||
507 (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 8, &zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ||
508 (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 9, &nh, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ||
509 (SQLITE_OK != sqlite3_bind_int64 (plugin->put_records, 10, rvalue)) )
512 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
513 "sqlite3_bind_XXXX");
514 if (SQLITE_OK != sqlite3_reset (plugin->put_records))
516 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
518 return GNUNET_SYSERR;
521 n = sqlite3_step (plugin->put_records);
522 if (SQLITE_OK != sqlite3_reset (plugin->put_records))
523 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
529 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Record stored\n");
532 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
536 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
538 return GNUNET_SYSERR;
544 * The given 'sqlite' statement has been prepared to be run.
545 * It will return a record which should be given to the iterator.
546 * Runs the statement and parses the returned record.
548 * @param plugin plugin context
549 * @param stmt to run (and then clean up)
550 * @param iter iterator to call with the result
551 * @param iter_cls closure for 'iter'
552 * @return GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error
555 get_record_and_call_iterator (struct Plugin *plugin,
557 GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
561 unsigned int record_count;
563 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key;
564 const struct GNUNET_CRYPTO_RsaSignature *sig;
565 struct GNUNET_TIME_Absolute expiration;
570 if (SQLITE_ROW == (sret = sqlite3_step (stmt)))
573 zone_key = sqlite3_column_blob (stmt, 0);
574 name = (const char*) sqlite3_column_text (stmt, 1);
575 record_count = sqlite3_column_int (stmt, 2);
576 data_size = sqlite3_column_bytes (stmt, 3);
577 data = sqlite3_column_blob (stmt, 3);
578 expiration.abs_value = (uint64_t) sqlite3_column_int64 (stmt, 4);
579 sig = sqlite3_column_blob (stmt, 5);
581 if ( (sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) != sqlite3_column_bytes (stmt, 0)) ||
582 (sizeof (struct GNUNET_CRYPTO_RsaSignature) != sqlite3_column_bytes (stmt, 5)) )
587 else if (record_count > 64 * 1024)
589 /* sanity check, don't stack allocate far too much just
590 because database might contain a large value here */
596 struct GNUNET_NAMESTORE_RecordData rd[record_count];
599 GNUNET_NAMESTORE_records_deserialize (data_size, data,
607 iter (iter_cls, zone_key, expiration, name,
608 record_count, rd, sig);
614 if (SQLITE_DONE != sret)
615 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite_step");
616 iter (iter_cls, NULL, GNUNET_TIME_UNIT_ZERO_ABS, NULL, 0, NULL, NULL);
618 if (SQLITE_OK != sqlite3_reset (stmt))
620 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
627 * Iterate over the results for a particular key and zone in the
628 * datastore. Will return at most one result to the iterator.
630 * @param cls closure (internal context for the plugin)
631 * @param zone hash of public key of the zone, NULL to iterate over all zones
632 * @param name name as string, NULL to iterate over all records of the zone
633 * @param offset offset in the list of all matching records
634 * @param iter function to call with the result
635 * @param iter_cls closure for iter
636 * @return GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error
639 namestore_sqlite_iterate_records (void *cls,
640 const struct GNUNET_CRYPTO_ShortHashCode *zone,
643 GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
645 struct Plugin *plugin = cls;
647 struct GNUNET_CRYPTO_ShortHashCode name_hase;
652 stmt = plugin->iterate_all;
655 GNUNET_CRYPTO_short_hash (name, strlen(name), &name_hase);
656 stmt = plugin->iterate_by_name;
660 stmt = plugin->iterate_by_zone;
663 GNUNET_CRYPTO_short_hash (name, strlen(name), &name_hase);
664 stmt = plugin->iterate_records;
668 if ( (NULL != zone) &&
669 (SQLITE_OK != sqlite3_bind_blob (stmt, ++boff,
670 zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode),
673 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
674 "sqlite3_bind_XXXX");
675 if (SQLITE_OK != sqlite3_reset (stmt))
677 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
679 return GNUNET_SYSERR;
681 if ( (NULL != name) &&
682 (SQLITE_OK != sqlite3_bind_blob (stmt, ++boff,
683 &name_hase, sizeof (struct GNUNET_CRYPTO_ShortHashCode),
686 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "ITERATE NAME HASH: `%8s'", GNUNET_short_h2s(&name_hase));
687 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
688 "sqlite3_bind_XXXX");
689 if (SQLITE_OK != sqlite3_reset (stmt))
691 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
693 return GNUNET_SYSERR;
696 if (SQLITE_OK != sqlite3_bind_int64 (stmt, ++boff,
699 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
700 "sqlite3_bind_XXXX");
701 if (SQLITE_OK != sqlite3_reset (stmt))
703 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
705 return GNUNET_SYSERR;
708 return get_record_and_call_iterator (plugin, stmt, iter, iter_cls);
713 * Look for an existing PKEY delegation record for a given public key.
714 * Returns at most one result to the iterator.
716 * @param cls closure (internal context for the plugin)
717 * @param zone hash of public key of the zone to look up in, never NULL
718 * @param value_zone hash of the public key of the target zone (value), never NULL
719 * @param iter function to call with the result
720 * @param iter_cls closure for iter
721 * @return GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error
724 namestore_sqlite_zone_to_name (void *cls,
725 const struct GNUNET_CRYPTO_ShortHashCode *zone,
726 const struct GNUNET_CRYPTO_ShortHashCode *value_zone,
727 GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
729 struct Plugin *plugin = cls;
732 stmt = plugin->zone_to_name;
733 if ( (SQLITE_OK != sqlite3_bind_blob (stmt, 1,
734 zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode),
736 (SQLITE_OK != sqlite3_bind_blob (stmt, 2,
737 value_zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode),
740 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
741 "sqlite3_bind_XXXX");
742 if (SQLITE_OK != sqlite3_reset (stmt))
744 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
746 return GNUNET_SYSERR;
748 return get_record_and_call_iterator (plugin, stmt, iter, iter_cls);
753 * Delete an entire zone (all records). Not used in normal operation.
755 * @param cls closure (internal context for the plugin)
756 * @param zone zone to delete
759 namestore_sqlite_delete_zone (void *cls,
760 const struct GNUNET_CRYPTO_ShortHashCode *zone)
762 struct Plugin *plugin = cls;
763 sqlite3_stmt *stmt = plugin->delete_zone;
766 if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC))
768 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
769 "sqlite3_bind_XXXX");
770 if (SQLITE_OK != sqlite3_reset (stmt))
772 GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
776 n = sqlite3_step (stmt);
777 if (SQLITE_OK != sqlite3_reset (stmt))
778 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
783 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Values deleted\n");
786 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
790 LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
798 * Entry point for the plugin.
800 * @param cls the "struct GNUNET_NAMESTORE_PluginEnvironment*"
801 * @return NULL on error, othrewise the plugin context
804 libgnunet_plugin_namestore_sqlite_init (void *cls)
806 static struct Plugin plugin;
807 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
808 struct GNUNET_NAMESTORE_PluginFunctions *api;
810 if (NULL != plugin.cfg)
811 return NULL; /* can only initialize once! */
812 memset (&plugin, 0, sizeof (struct Plugin));
814 if (GNUNET_OK != database_setup (&plugin))
816 database_shutdown (&plugin);
819 api = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_PluginFunctions));
821 api->put_records = &namestore_sqlite_put_records;
822 api->remove_records = &namestore_sqlite_remove_records;
823 api->iterate_records = &namestore_sqlite_iterate_records;
824 api->zone_to_name = &namestore_sqlite_zone_to_name;
825 api->delete_zone = &namestore_sqlite_delete_zone;
826 LOG (GNUNET_ERROR_TYPE_INFO,
827 _("Sqlite database running\n"));
833 * Exit point from the plugin.
835 * @param cls the plugin context (as returned by "init")
836 * @return always NULL
839 libgnunet_plugin_namestore_sqlite_done (void *cls)
841 struct GNUNET_NAMESTORE_PluginFunctions *api = cls;
842 struct Plugin *plugin = api->cls;
844 LOG (GNUNET_ERROR_TYPE_DEBUG,
845 "sqlite plugin is done\n");
846 database_shutdown (plugin);
849 LOG (GNUNET_ERROR_TYPE_DEBUG,
850 "sqlite plugin is finished\n");
854 /* end of plugin_namestore_sqlite.c */