/* * This file is part of GNUnet * (C) 2009, 2011, 2012 Christian Grothoff (and other contributing authors) * * GNUnet 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, or (at your * option) any later version. * * GNUnet 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 GNUnet; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * @file namestore/plugin_namestore_sqlite.c * @brief sqlite-based namestore backend * @author Christian Grothoff */ #include "platform.h" #include "gnunet_namestore_plugin.h" #include "gnunet_namestore_service.h" #include "namestore.h" #include /** * After how many ms "busy" should a DB operation fail for good? * A low value makes sure that we are more responsive to requests * (especially PUTs). A high value guarantees a higher success * rate (SELECTs in iterate can take several seconds despite LIMIT=1). * * The default value of 1s should ensure that users do not experience * huge latencies while at the same time allowing operations to succeed * with reasonable probability. */ #define BUSY_TIMEOUT_MS 1000 /** * Log an error message at log-level 'level' that indicates * a failure of the command 'cmd' on file 'filename' * with the message given by strerror(errno). */ #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) #define LOG(kind,...) GNUNET_log_from (kind, "namestore-sqlite", __VA_ARGS__) /** * Context for all functions in this plugin. */ struct Plugin { const struct GNUNET_CONFIGURATION_Handle *cfg; /** * Database filename. */ char *fn; /** * Native SQLite database handle. */ sqlite3 *dbh; /** * Precompiled SQL for put record */ sqlite3_stmt *put_records; /** * Precompiled SQL for remove record */ sqlite3_stmt *remove_records; /** * Precompiled SQL for iterate over all records. */ sqlite3_stmt *iterate_all; /** * Precompiled SQL for iterate records with same name. */ sqlite3_stmt *iterate_by_name; /** * Precompiled SQL for iterate records with same zone. */ sqlite3_stmt *iterate_by_zone; /** * Precompiled SQL for iterate records with same name and zone. */ sqlite3_stmt *iterate_records; /** * Precompiled SQL to get the name for a given zone-value. */ sqlite3_stmt *zone_to_name; /** * Precompiled SQL for delete zone */ sqlite3_stmt *delete_zone; }; /** * @brief Prepare a SQL statement * * @param dbh handle to the database * @param zSql SQL statement, UTF-8 encoded * @param ppStmt set to the prepared statement * @return 0 on success */ static int sq_prepare (sqlite3 * dbh, const char *zSql, sqlite3_stmt ** ppStmt) { char *dummy; int result; result = sqlite3_prepare_v2 (dbh, zSql, strlen (zSql), ppStmt, (const char **) &dummy); LOG (GNUNET_ERROR_TYPE_DEBUG, "Prepared `%s' / %p: %d\n", zSql, *ppStmt, result); return result; } /** * Create our database indices. * * @param dbh handle to the database */ static void create_indices (sqlite3 * dbh) { /* create indices */ if ( (SQLITE_OK != sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone_name_rv ON ns091records (zone_hash,record_name_hash,rvalue)", NULL, NULL, NULL)) || (SQLITE_OK != sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone_delegation ON ns091records (zone_hash,zone_delegation)", NULL, NULL, NULL)) || (SQLITE_OK != sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone_rv ON ns091records (zone_hash,rvalue)", NULL, NULL, NULL)) || (SQLITE_OK != sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_zone ON ns091records (zone_hash)", NULL, NULL, NULL)) || (SQLITE_OK != sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_name_rv ON ns091records (record_name_hash,rvalue)", NULL, NULL, NULL)) || (SQLITE_OK != sqlite3_exec (dbh, "CREATE INDEX IF NOT EXISTS ir_rv ON ns091records (rvalue)", NULL, NULL, NULL)) ) LOG (GNUNET_ERROR_TYPE_ERROR, "Failed to create indices: %s\n", sqlite3_errmsg (dbh)); } #if 0 #define CHECK(a) GNUNET_break(a) #define ENULL NULL #else #define ENULL &e #define ENULL_DEFINED 1 #define CHECK(a) if (! a) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "%s\n", e); sqlite3_free(e); } #endif /** * Initialize the database connections and associated * data structures (create tables and indices * as needed as well). * * @param plugin the plugin context (state for this module) * @return GNUNET_OK on success */ static int database_setup (struct Plugin *plugin) { sqlite3_stmt *stmt; char *afsdir; #if ENULL_DEFINED char *e; #endif if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (plugin->cfg, "namestore-sqlite", "FILENAME", &afsdir)) { LOG (GNUNET_ERROR_TYPE_ERROR, _ ("Option `%s' in section `%s' missing in configuration!\n"), "FILENAME", "namestore-sqlite"); return GNUNET_SYSERR; } if (GNUNET_OK != GNUNET_DISK_file_test (afsdir)) { if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (afsdir)) { GNUNET_break (0); GNUNET_free (afsdir); return GNUNET_SYSERR; } } #ifdef ENABLE_NLS plugin->fn = GNUNET_STRINGS_to_utf8 (afsdir, strlen (afsdir), nl_langinfo (CODESET)); #else plugin->fn = GNUNET_STRINGS_to_utf8 (afsdir, strlen (afsdir), "UTF-8"); /* good luck */ #endif GNUNET_free (afsdir); /* Open database and precompile statements */ if (sqlite3_open (plugin->fn, &plugin->dbh) != SQLITE_OK) { LOG (GNUNET_ERROR_TYPE_ERROR, _("Unable to initialize SQLite: %s.\n"), sqlite3_errmsg (plugin->dbh)); return GNUNET_SYSERR; } CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA temp_store=MEMORY", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA synchronous=NORMAL", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA legacy_file_format=OFF", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA auto_vacuum=INCREMENTAL", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA encoding=\"UTF-8\"", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA locking_mode=EXCLUSIVE", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA count_changes=OFF", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_exec (plugin->dbh, "PRAGMA page_size=4092", NULL, NULL, ENULL)); CHECK (SQLITE_OK == sqlite3_busy_timeout (plugin->dbh, BUSY_TIMEOUT_MS)); /* Create tables */ CHECK (SQLITE_OK == sq_prepare (plugin->dbh, "SELECT 1 FROM sqlite_master WHERE tbl_name = 'ns091records'", &stmt)); if ((sqlite3_step (stmt) == SQLITE_DONE) && (sqlite3_exec (plugin->dbh, "CREATE TABLE ns091records (" " zone_key BLOB NOT NULL DEFAULT ''," " zone_delegation BLOB NOT NULL DEFAULT ''," " zone_hash BLOB NOT NULL DEFAULT ''," " record_count INT NOT NULL DEFAULT 0," " record_data BLOB NOT NULL DEFAULT ''," " block_expiration_time INT8 NOT NULL DEFAULT 0," " signature BLOB NOT NULL DEFAULT ''," " record_name TEXT NOT NULL DEFAULT ''," " record_name_hash BLOB NOT NULL DEFAULT ''," " rvalue INT8 NOT NULL DEFAULT ''" ")", NULL, NULL, NULL) != SQLITE_OK)) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite3_exec"); sqlite3_finalize (stmt); return GNUNET_SYSERR; } sqlite3_finalize (stmt); create_indices (plugin->dbh); #define ALL "zone_key, record_name, record_count, record_data, block_expiration_time, signature" if ((sq_prepare (plugin->dbh, "INSERT INTO ns091records (" ALL ", zone_delegation, zone_hash, record_name_hash, rvalue) VALUES " "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)", &plugin->put_records) != SQLITE_OK) || (sq_prepare (plugin->dbh, "DELETE FROM ns091records WHERE zone_hash=? AND record_name_hash=?", &plugin->remove_records) != SQLITE_OK) || (sq_prepare (plugin->dbh, "SELECT " ALL " FROM ns091records WHERE zone_hash=? AND record_name_hash=? ORDER BY rvalue LIMIT 1 OFFSET ?", &plugin->iterate_records) != SQLITE_OK) || (sq_prepare (plugin->dbh, "SELECT " ALL " FROM ns091records WHERE zone_hash=? ORDER BY rvalue LIMIT 1 OFFSET ?", &plugin->iterate_by_zone) != SQLITE_OK) || (sq_prepare (plugin->dbh, "SELECT " ALL " FROM ns091records WHERE record_name_hash=? ORDER BY rvalue LIMIT 1 OFFSET ?", &plugin->iterate_by_name) != SQLITE_OK) || (sq_prepare (plugin->dbh, "SELECT " ALL " FROM ns091records ORDER BY rvalue LIMIT 1 OFFSET ?", &plugin->iterate_all) != SQLITE_OK) || (sq_prepare (plugin->dbh, "SELECT " ALL " FROM ns091records WHERE zone_hash=? AND zone_delegation=?", &plugin->zone_to_name) != SQLITE_OK) || (sq_prepare (plugin->dbh, "DELETE FROM ns091records WHERE zone_hash=?", &plugin->delete_zone) != SQLITE_OK) ) { LOG_SQLITE (plugin,GNUNET_ERROR_TYPE_ERROR, "precompiling"); return GNUNET_SYSERR; } #undef ALL return GNUNET_OK; } /** * Shutdown database connection and associate data * structures. * @param plugin the plugin context (state for this module) */ static void database_shutdown (struct Plugin *plugin) { int result; sqlite3_stmt *stmt; if (NULL != plugin->put_records) sqlite3_finalize (plugin->put_records); if (NULL != plugin->remove_records) sqlite3_finalize (plugin->remove_records); if (NULL != plugin->iterate_records) sqlite3_finalize (plugin->iterate_records); if (NULL != plugin->iterate_by_zone) sqlite3_finalize (plugin->iterate_by_zone); if (NULL != plugin->iterate_by_name) sqlite3_finalize (plugin->iterate_by_name); if (NULL != plugin->iterate_all) sqlite3_finalize (plugin->iterate_all); if (NULL != plugin->zone_to_name) sqlite3_finalize (plugin->zone_to_name); if (NULL != plugin->delete_zone) sqlite3_finalize (plugin->delete_zone); result = sqlite3_close (plugin->dbh); if (result == SQLITE_BUSY) { LOG (GNUNET_ERROR_TYPE_WARNING, _("Tried to close sqlite without finalizing all prepared statements.\n")); stmt = sqlite3_next_stmt (plugin->dbh, NULL); while (stmt != NULL) { GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Closing statement %p\n", stmt); result = sqlite3_finalize (stmt); if (result != SQLITE_OK) GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "sqlite", "Failed to close statement %p: %d\n", stmt, result); stmt = sqlite3_next_stmt (plugin->dbh, NULL); } result = sqlite3_close (plugin->dbh); } if (SQLITE_OK != result) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite3_close"); GNUNET_free_non_null (plugin->fn); } /** * Removes any existing record in the given zone with the same name. * * @param cls closure (internal context for the plugin) * @param zone hash of the public key of the zone * @param name name to remove (at most 255 characters long) * @return GNUNET_OK on success */ static int namestore_sqlite_remove_records (void *cls, const struct GNUNET_CRYPTO_ShortHashCode *zone, const char *name) { struct Plugin *plugin = cls; struct GNUNET_CRYPTO_ShortHashCode nh; size_t name_len; int n; name_len = strlen (name); GNUNET_CRYPTO_short_hash (name, name_len, &nh); if ((SQLITE_OK != sqlite3_bind_blob (plugin->remove_records, 1, zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_blob (plugin->remove_records, 2, &nh, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC))) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (plugin->remove_records)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return GNUNET_SYSERR; } n = sqlite3_step (plugin->remove_records); if (SQLITE_OK != sqlite3_reset (plugin->remove_records)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); switch (n) { case SQLITE_DONE: GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Record removed\n"); return GNUNET_OK; case SQLITE_BUSY: LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "sqlite3_step"); return GNUNET_NO; default: LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_step"); return GNUNET_SYSERR; } } /** * Store a record in the datastore. Removes any existing record in the * same zone with the same name. * * @param cls closure (internal context for the plugin) * @param zone_key public key of the zone * @param expire when does the corresponding block in the DHT expire (until * when should we never do a DHT lookup for the same name again)? * @param name name that is being mapped (at most 255 characters long) * @param rd_count number of entries in 'rd' array * @param rd array of records with data to store * @param signature signature of the record block, NULL if signature is unavailable (i.e. * because the user queried for a particular record type only) * @return GNUNET_OK on success, else GNUNET_SYSERR */ static int namestore_sqlite_put_records (void *cls, const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key, struct GNUNET_TIME_Absolute expire, const char *name, unsigned int rd_count, const struct GNUNET_NAMESTORE_RecordData *rd, const struct GNUNET_CRYPTO_RsaSignature *signature) { struct Plugin *plugin = cls; int n; struct GNUNET_CRYPTO_ShortHashCode zone; struct GNUNET_CRYPTO_ShortHashCode zone_delegation; struct GNUNET_CRYPTO_ShortHashCode nh; size_t name_len; uint64_t rvalue; size_t data_size; unsigned int i; GNUNET_CRYPTO_short_hash (zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &zone); (void) namestore_sqlite_remove_records (plugin, &zone, name); name_len = strlen (name); GNUNET_CRYPTO_short_hash (name, name_len, &nh); memset (&zone_delegation, 0, sizeof (zone_delegation)); for (i=0;i 64 * 65536) { GNUNET_break (0); return GNUNET_SYSERR; } { char data[data_size]; if (data_size != GNUNET_NAMESTORE_records_serialize (rd_count, rd, data_size, data)) { GNUNET_break (0); return GNUNET_SYSERR; } if ((SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 1, zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_text (plugin->put_records, 2, name, -1, SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_int (plugin->put_records, 3, rd_count)) || (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 4, data, data_size, SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_int64 (plugin->put_records, 5, expire.abs_value)) || (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 6, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 7, &zone_delegation, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 8, &zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_blob (plugin->put_records, 9, &nh, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_int64 (plugin->put_records, 10, rvalue)) ) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (plugin->put_records)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return GNUNET_SYSERR; } n = sqlite3_step (plugin->put_records); if (SQLITE_OK != sqlite3_reset (plugin->put_records)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); } switch (n) { case SQLITE_DONE: GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Record stored\n"); return GNUNET_OK; case SQLITE_BUSY: LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "sqlite3_step"); return GNUNET_NO; default: LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_step"); return GNUNET_SYSERR; } } /** * The given 'sqlite' statement has been prepared to be run. * It will return a record which should be given to the iterator. * Runs the statement and parses the returned record. * * @param plugin plugin context * @param stmt to run (and then clean up) * @param iter iterator to call with the result * @param iter_cls closure for 'iter' * @return GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error */ static int get_record_and_call_iterator (struct Plugin *plugin, sqlite3_stmt *stmt, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls) { int ret; int sret; unsigned int record_count; size_t data_size; const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key; const struct GNUNET_CRYPTO_RsaSignature *sig; struct GNUNET_TIME_Absolute expiration; const char *data; const char *name; ret = GNUNET_NO; if (SQLITE_ROW == (sret = sqlite3_step (stmt))) { ret = GNUNET_YES; zone_key = sqlite3_column_blob (stmt, 0); name = (const char*) sqlite3_column_text (stmt, 1); record_count = sqlite3_column_int (stmt, 2); data_size = sqlite3_column_bytes (stmt, 3); data = sqlite3_column_blob (stmt, 3); expiration.abs_value = (uint64_t) sqlite3_column_int64 (stmt, 4); sig = sqlite3_column_blob (stmt, 5); if ( (sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) != sqlite3_column_bytes (stmt, 0)) || (sizeof (struct GNUNET_CRYPTO_RsaSignature) != sqlite3_column_bytes (stmt, 5)) ) { GNUNET_break (0); ret = GNUNET_SYSERR; } else { struct GNUNET_NAMESTORE_RecordData rd[record_count]; if (GNUNET_OK != GNUNET_NAMESTORE_records_deserialize (data_size, data, record_count, rd)) { GNUNET_break (0); ret = GNUNET_SYSERR; record_count = 0; } else { iter (iter_cls, zone_key, expiration, name, record_count, rd, sig); } } } else { if (SQLITE_DONE != sret) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite_step"); iter (iter_cls, NULL, GNUNET_TIME_UNIT_ZERO_ABS, NULL, 0, NULL, NULL); } if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return ret; } /** * Iterate over the results for a particular key and zone in the * datastore. Will return at most one result to the iterator. * * @param cls closure (internal context for the plugin) * @param zone hash of public key of the zone, NULL to iterate over all zones * @param name name as string, NULL to iterate over all records of the zone * @param offset offset in the list of all matching records * @param iter function to call with the result * @param iter_cls closure for iter * @return GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error */ static int namestore_sqlite_iterate_records (void *cls, const struct GNUNET_CRYPTO_ShortHashCode *zone, const char *name, uint64_t offset, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls) { struct Plugin *plugin = cls; sqlite3_stmt *stmt; struct GNUNET_CRYPTO_ShortHashCode name_hase; unsigned int boff; if (NULL == zone) if (NULL == name) stmt = plugin->iterate_all; else { GNUNET_CRYPTO_short_hash (name, strlen(name), &name_hase); stmt = plugin->iterate_by_name; } else if (NULL == name) stmt = plugin->iterate_by_zone; else { GNUNET_CRYPTO_short_hash (name, strlen(name), &name_hase); stmt = plugin->iterate_records; } boff = 0; if ( (NULL != zone) && (SQLITE_OK != sqlite3_bind_blob (stmt, ++boff, zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return GNUNET_SYSERR; } if ( (NULL != name) && (SQLITE_OK != sqlite3_bind_blob (stmt, ++boff, &name_hase, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ) { GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "ITERATE NAME HASH: `%8s'", GNUNET_short_h2s(&name_hase)); LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return GNUNET_SYSERR; } if (SQLITE_OK != sqlite3_bind_int64 (stmt, ++boff, offset)) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return GNUNET_SYSERR; } return get_record_and_call_iterator (plugin, stmt, iter, iter_cls); } /** * Look for an existing PKEY delegation record for a given public key. * Returns at most one result to the iterator. * * @param cls closure (internal context for the plugin) * @param zone hash of public key of the zone to look up in, never NULL * @param value_zone hash of the public key of the target zone (value), never NULL * @param iter function to call with the result * @param iter_cls closure for iter * @return GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error */ static int namestore_sqlite_zone_to_name (void *cls, const struct GNUNET_CRYPTO_ShortHashCode *zone, const struct GNUNET_CRYPTO_ShortHashCode *value_zone, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls) { struct Plugin *plugin = cls; sqlite3_stmt *stmt; stmt = plugin->zone_to_name; if ( (SQLITE_OK != sqlite3_bind_blob (stmt, 1, zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) || (SQLITE_OK != sqlite3_bind_blob (stmt, 2, value_zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) ) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return GNUNET_SYSERR; } return get_record_and_call_iterator (plugin, stmt, iter, iter_cls); } /** * Delete an entire zone (all records). Not used in normal operation. * * @param cls closure (internal context for the plugin) * @param zone zone to delete */ static void namestore_sqlite_delete_zone (void *cls, const struct GNUNET_CRYPTO_ShortHashCode *zone) { struct Plugin *plugin = cls; sqlite3_stmt *stmt = plugin->delete_zone; int n; if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, zone, sizeof (struct GNUNET_CRYPTO_ShortHashCode), SQLITE_STATIC)) { LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_bind_XXXX"); if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); return; } n = sqlite3_step (stmt); if (SQLITE_OK != sqlite3_reset (stmt)) LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_reset"); switch (n) { case SQLITE_DONE: GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "sqlite", "Values deleted\n"); break; case SQLITE_BUSY: LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "sqlite3_step"); break; default: LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK, "sqlite3_step"); break; } } /** * Entry point for the plugin. * * @param cls the "struct GNUNET_NAMESTORE_PluginEnvironment*" * @return NULL on error, othrewise the plugin context */ void * libgnunet_plugin_namestore_sqlite_init (void *cls) { static struct Plugin plugin; const struct GNUNET_CONFIGURATION_Handle *cfg = cls; struct GNUNET_NAMESTORE_PluginFunctions *api; if (NULL != plugin.cfg) return NULL; /* can only initialize once! */ memset (&plugin, 0, sizeof (struct Plugin)); plugin.cfg = cfg; if (GNUNET_OK != database_setup (&plugin)) { database_shutdown (&plugin); return NULL; } api = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_PluginFunctions)); api->cls = &plugin; api->put_records = &namestore_sqlite_put_records; api->remove_records = &namestore_sqlite_remove_records; api->iterate_records = &namestore_sqlite_iterate_records; api->zone_to_name = &namestore_sqlite_zone_to_name; api->delete_zone = &namestore_sqlite_delete_zone; LOG (GNUNET_ERROR_TYPE_INFO, _("Sqlite database running\n")); return api; } /** * Exit point from the plugin. * * @param cls the plugin context (as returned by "init") * @return always NULL */ void * libgnunet_plugin_namestore_sqlite_done (void *cls) { struct GNUNET_NAMESTORE_PluginFunctions *api = cls; struct Plugin *plugin = api->cls; LOG (GNUNET_ERROR_TYPE_DEBUG, "sqlite plugin is done\n"); database_shutdown (plugin); plugin->cfg = NULL; GNUNET_free (api); LOG (GNUNET_ERROR_TYPE_DEBUG, "sqlite plugin is finished\n"); return NULL; } /* end of plugin_namestore_sqlite.c */