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-rw-r--r--src/psycstore/plugin_psycstore_sqlite.c1948
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diff --git a/src/psycstore/plugin_psycstore_sqlite.c b/src/psycstore/plugin_psycstore_sqlite.c
new file mode 100644
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--- /dev/null
+++ b/src/psycstore/plugin_psycstore_sqlite.c
@@ -0,0 +1,1948 @@
+/*
+ * This file is part of GNUnet
+ * Copyright (C) 2013 GNUnet e.V.
+ *
+ * GNUnet is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License,
+ * 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
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file psycstore/plugin_psycstore_sqlite.c
+ * @brief sqlite-based psycstore backend
+ * @author Gabor X Toth
+ * @author Christian Grothoff
+ */
+
+/*
+ * FIXME: SQLite3 only supports signed 64-bit integers natively,
+ * thus it can only store 63 bits of the uint64_t's.
+ */
+
+#include "platform.h"
+#include "gnunet_psycstore_plugin.h"
+#include "gnunet_psycstore_service.h"
+#include "gnunet_multicast_service.h"
+#include "gnunet_crypto_lib.h"
+#include "gnunet_psyc_util_lib.h"
+#include "psycstore.h"
+#include <sqlite3.h>
+
+/**
+ * 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
+
+#define DEBUG_PSYCSTORE GNUNET_EXTRA_LOGGING
+
+/**
+ * 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, "psycstore-sqlite", _("`%s' failed at %s:%d with error: %s (%d)\n"), cmd, __FILE__, __LINE__, sqlite3_errmsg(db->dbh), sqlite3_errcode(db->dbh)); } while(0)
+
+#define LOG(kind,...) GNUNET_log_from (kind, "psycstore-sqlite", __VA_ARGS__)
+
+enum Transactions {
+ TRANSACTION_NONE = 0,
+ TRANSACTION_STATE_MODIFY,
+ TRANSACTION_STATE_SYNC,
+};
+
+/**
+ * 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;
+
+ /**
+ * Current transaction.
+ */
+ enum Transactions transaction;
+
+ sqlite3_stmt *transaction_begin;
+
+ sqlite3_stmt *transaction_commit;
+
+ sqlite3_stmt *transaction_rollback;
+
+ /**
+ * Precompiled SQL for channel_key_store()
+ */
+ sqlite3_stmt *insert_channel_key;
+
+ /**
+ * Precompiled SQL for slave_key_store()
+ */
+ sqlite3_stmt *insert_slave_key;
+
+
+ /**
+ * Precompiled SQL for membership_store()
+ */
+ sqlite3_stmt *insert_membership;
+
+ /**
+ * Precompiled SQL for membership_test()
+ */
+ sqlite3_stmt *select_membership;
+
+
+ /**
+ * Precompiled SQL for fragment_store()
+ */
+ sqlite3_stmt *insert_fragment;
+
+ /**
+ * Precompiled SQL for message_add_flags()
+ */
+ sqlite3_stmt *update_message_flags;
+
+ /**
+ * Precompiled SQL for fragment_get()
+ */
+ sqlite3_stmt *select_fragments;
+
+ /**
+ * Precompiled SQL for fragment_get()
+ */
+ sqlite3_stmt *select_latest_fragments;
+
+ /**
+ * Precompiled SQL for message_get()
+ */
+ sqlite3_stmt *select_messages;
+
+ /**
+ * Precompiled SQL for message_get()
+ */
+ sqlite3_stmt *select_latest_messages;
+
+ /**
+ * Precompiled SQL for message_get_fragment()
+ */
+ sqlite3_stmt *select_message_fragment;
+
+ /**
+ * Precompiled SQL for counters_get_message()
+ */
+ sqlite3_stmt *select_counters_message;
+
+ /**
+ * Precompiled SQL for counters_get_state()
+ */
+ sqlite3_stmt *select_counters_state;
+
+ /**
+ * Precompiled SQL for state_modify_end()
+ */
+ sqlite3_stmt *update_state_hash_message_id;
+
+ /**
+ * Precompiled SQL for state_sync_end()
+ */
+ sqlite3_stmt *update_max_state_message_id;
+
+ /**
+ * Precompiled SQL for state_modify_op()
+ */
+ sqlite3_stmt *insert_state_current;
+
+ /**
+ * Precompiled SQL for state_modify_end()
+ */
+ sqlite3_stmt *delete_state_empty;
+
+ /**
+ * Precompiled SQL for state_set_signed()
+ */
+ sqlite3_stmt *update_state_signed;
+
+ /**
+ * Precompiled SQL for state_sync()
+ */
+ sqlite3_stmt *insert_state_sync;
+
+ /**
+ * Precompiled SQL for state_sync()
+ */
+ sqlite3_stmt *delete_state;
+
+ /**
+ * Precompiled SQL for state_sync()
+ */
+ sqlite3_stmt *insert_state_from_sync;
+
+ /**
+ * Precompiled SQL for state_sync()
+ */
+ sqlite3_stmt *delete_state_sync;
+
+ /**
+ * Precompiled SQL for state_get_signed()
+ */
+ sqlite3_stmt *select_state_signed;
+
+ /**
+ * Precompiled SQL for state_get()
+ */
+ sqlite3_stmt *select_state_one;
+
+ /**
+ * Precompiled SQL for state_get_prefix()
+ */
+ sqlite3_stmt *select_state_prefix;
+
+};
+
+#if DEBUG_PSYCSTORE
+
+static void
+sql_trace (void *cls, const char *sql)
+{
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "SQL query:\n%s\n", sql);
+}
+
+#endif
+
+/**
+ * @brief Prepare a SQL statement
+ *
+ * @param dbh handle to the database
+ * @param sql SQL statement, UTF-8 encoded
+ * @param stmt set to the prepared statement
+ * @return 0 on success
+ */
+static int
+sql_prepare (sqlite3 *dbh, const char *sql, sqlite3_stmt **stmt)
+{
+ char *tail;
+ int result;
+
+ result = sqlite3_prepare_v2 (dbh, sql, strlen (sql), stmt,
+ (const char **) &tail);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Prepared `%s' / %p: %d\n", sql, *stmt, result);
+ if (result != SQLITE_OK)
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Error preparing SQL query: %s\n %s\n"),
+ sqlite3_errmsg (dbh), sql);
+ return result;
+}
+
+
+/**
+ * @brief Prepare a SQL statement
+ *
+ * @param dbh handle to the database
+ * @param sql SQL statement, UTF-8 encoded
+ * @return 0 on success
+ */
+static int
+sql_exec (sqlite3 *dbh, const char *sql)
+{
+ int result;
+
+ result = sqlite3_exec (dbh, sql, NULL, NULL, NULL);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Executed `%s' / %d\n", sql, result);
+ if (result != SQLITE_OK)
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Error executing SQL query: %s\n %s\n"),
+ sqlite3_errmsg (dbh), sql);
+ return result;
+}
+
+
+/**
+ * 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)
+{
+ char *filename;
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (plugin->cfg, "psycstore-sqlite",
+ "FILENAME", &filename))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "psycstore-sqlite", "FILENAME");
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK != GNUNET_DISK_file_test (filename))
+ {
+ if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (filename))
+ {
+ GNUNET_break (0);
+ GNUNET_free (filename);
+ return GNUNET_SYSERR;
+ }
+ }
+ /* filename should be UTF-8-encoded. If it isn't, it's a bug */
+ plugin->fn = filename;
+
+ /* Open database and precompile statements */
+ if (SQLITE_OK != sqlite3_open (plugin->fn, &plugin->dbh))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Unable to initialize SQLite: %s.\n"),
+ sqlite3_errmsg (plugin->dbh));
+ return GNUNET_SYSERR;
+ }
+
+#if DEBUG_PSYCSTORE
+ sqlite3_trace (plugin->dbh, &sql_trace, NULL);
+#endif
+
+ sql_exec (plugin->dbh, "PRAGMA temp_store=MEMORY");
+ sql_exec (plugin->dbh, "PRAGMA synchronous=NORMAL");
+ sql_exec (plugin->dbh, "PRAGMA legacy_file_format=OFF");
+ sql_exec (plugin->dbh, "PRAGMA auto_vacuum=INCREMENTAL");
+ sql_exec (plugin->dbh, "PRAGMA encoding=\"UTF-8\"");
+#if ! DEBUG_PSYCSTORE
+ sql_exec (plugin->dbh, "PRAGMA locking_mode=EXCLUSIVE");
+#endif
+ sql_exec (plugin->dbh, "PRAGMA page_size=4096");
+
+ sqlite3_busy_timeout (plugin->dbh, BUSY_TIMEOUT_MS);
+
+ /* Create tables */
+
+ sql_exec (plugin->dbh,
+ "CREATE TABLE IF NOT EXISTS channels (\n"
+ " id INTEGER PRIMARY KEY,\n"
+ " pub_key BLOB(32) UNIQUE,\n"
+ " max_state_message_id INTEGER,\n" // last applied state message ID
+ " state_hash_message_id INTEGER\n" // last message ID with a state hash
+ ");");
+
+ sql_exec (plugin->dbh,
+ "CREATE TABLE IF NOT EXISTS slaves (\n"
+ " id INTEGER PRIMARY KEY,\n"
+ " pub_key BLOB(32) UNIQUE\n"
+ ");");
+
+ sql_exec (plugin->dbh,
+ "CREATE TABLE IF NOT EXISTS membership (\n"
+ " channel_id INTEGER NOT NULL REFERENCES channels(id),\n"
+ " slave_id INTEGER NOT NULL REFERENCES slaves(id),\n"
+ " did_join INTEGER NOT NULL,\n"
+ " announced_at INTEGER NOT NULL,\n"
+ " effective_since INTEGER NOT NULL,\n"
+ " group_generation INTEGER NOT NULL\n"
+ ");");
+ sql_exec (plugin->dbh,
+ "CREATE INDEX IF NOT EXISTS idx_membership_channel_id_slave_id "
+ "ON membership (channel_id, slave_id);");
+
+ /** @todo messages table: add method_name column */
+ sql_exec (plugin->dbh,
+ "CREATE TABLE IF NOT EXISTS messages (\n"
+ " channel_id INTEGER NOT NULL REFERENCES channels(id),\n"
+ " hop_counter INTEGER NOT NULL,\n"
+ " signature BLOB,\n"
+ " purpose BLOB,\n"
+ " fragment_id INTEGER NOT NULL,\n"
+ " fragment_offset INTEGER NOT NULL,\n"
+ " message_id INTEGER NOT NULL,\n"
+ " group_generation INTEGER NOT NULL,\n"
+ " multicast_flags INTEGER NOT NULL,\n"
+ " psycstore_flags INTEGER NOT NULL,\n"
+ " data BLOB,\n"
+ " PRIMARY KEY (channel_id, fragment_id),\n"
+ " UNIQUE (channel_id, message_id, fragment_offset)\n"
+ ");");
+
+ sql_exec (plugin->dbh,
+ "CREATE TABLE IF NOT EXISTS state (\n"
+ " channel_id INTEGER NOT NULL REFERENCES channels(id),\n"
+ " name TEXT NOT NULL,\n"
+ " value_current BLOB,\n"
+ " value_signed BLOB,\n"
+ " PRIMARY KEY (channel_id, name)\n"
+ ");");
+
+ sql_exec (plugin->dbh,
+ "CREATE TABLE IF NOT EXISTS state_sync (\n"
+ " channel_id INTEGER NOT NULL REFERENCES channels(id),\n"
+ " name TEXT NOT NULL,\n"
+ " value BLOB,\n"
+ " PRIMARY KEY (channel_id, name)\n"
+ ");");
+
+ /* Prepare statements */
+
+ sql_prepare (plugin->dbh, "BEGIN;", &plugin->transaction_begin);
+
+ sql_prepare (plugin->dbh, "COMMIT;", &plugin->transaction_commit);
+
+ sql_prepare (plugin->dbh, "ROLLBACK;", &plugin->transaction_rollback);
+
+ sql_prepare (plugin->dbh,
+ "INSERT OR IGNORE INTO channels (pub_key) VALUES (?);",
+ &plugin->insert_channel_key);
+
+ sql_prepare (plugin->dbh,
+ "INSERT OR IGNORE INTO slaves (pub_key) VALUES (?);",
+ &plugin->insert_slave_key);
+
+ sql_prepare (plugin->dbh,
+ "INSERT INTO membership\n"
+ " (channel_id, slave_id, did_join, announced_at,\n"
+ " effective_since, group_generation)\n"
+ "VALUES ((SELECT id FROM channels WHERE pub_key = ?),\n"
+ " (SELECT id FROM slaves WHERE pub_key = ?),\n"
+ " ?, ?, ?, ?);",
+ &plugin->insert_membership);
+
+ sql_prepare (plugin->dbh,
+ "SELECT did_join FROM membership\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND slave_id = (SELECT id FROM slaves WHERE pub_key = ?)\n"
+ " AND effective_since <= ? AND did_join = 1\n"
+ "ORDER BY announced_at DESC LIMIT 1;",
+ &plugin->select_membership);
+
+ sql_prepare (plugin->dbh,
+ "INSERT OR IGNORE INTO messages\n"
+ " (channel_id, hop_counter, signature, purpose,\n"
+ " fragment_id, fragment_offset, message_id,\n"
+ " group_generation, multicast_flags, psycstore_flags, data)\n"
+ "VALUES ((SELECT id FROM channels WHERE pub_key = ?),\n"
+ " ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);",
+ &plugin->insert_fragment);
+
+ sql_prepare (plugin->dbh,
+ "UPDATE messages\n"
+ "SET psycstore_flags = psycstore_flags | ?\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND message_id = ? AND fragment_offset = 0;",
+ &plugin->update_message_flags);
+
+ sql_prepare (plugin->dbh,
+ "SELECT hop_counter, signature, purpose, fragment_id,\n"
+ " fragment_offset, message_id, group_generation,\n"
+ " multicast_flags, psycstore_flags, data\n"
+ "FROM messages\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND ? <= fragment_id AND fragment_id <= ?;",
+ &plugin->select_fragments);
+
+ /** @todo select_messages: add method_prefix filter */
+ sql_prepare (plugin->dbh,
+ "SELECT hop_counter, signature, purpose, fragment_id,\n"
+ " fragment_offset, message_id, group_generation,\n"
+ " multicast_flags, psycstore_flags, data\n"
+ "FROM messages\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND ? <= message_id AND message_id <= ?"
+ "LIMIT ?;",
+ &plugin->select_messages);
+
+ sql_prepare (plugin->dbh,
+ "SELECT * FROM\n"
+ "(SELECT hop_counter, signature, purpose, fragment_id,\n"
+ " fragment_offset, message_id, group_generation,\n"
+ " multicast_flags, psycstore_flags, data\n"
+ " FROM messages\n"
+ " WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " ORDER BY fragment_id DESC\n"
+ " LIMIT ?)\n"
+ "ORDER BY fragment_id;",
+ &plugin->select_latest_fragments);
+
+ /** @todo select_latest_messages: add method_prefix filter */
+ sql_prepare (plugin->dbh,
+ "SELECT hop_counter, signature, purpose, fragment_id,\n"
+ " fragment_offset, message_id, group_generation,\n"
+ " multicast_flags, psycstore_flags, data\n"
+ "FROM messages\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND message_id IN\n"
+ " (SELECT message_id\n"
+ " FROM messages\n"
+ " WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " GROUP BY message_id\n"
+ " ORDER BY message_id\n"
+ " DESC LIMIT ?)\n"
+ "ORDER BY fragment_id;",
+ &plugin->select_latest_messages);
+
+ sql_prepare (plugin->dbh,
+ "SELECT hop_counter, signature, purpose, fragment_id,\n"
+ " fragment_offset, message_id, group_generation,\n"
+ " multicast_flags, psycstore_flags, data\n"
+ "FROM messages\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND message_id = ? AND fragment_offset = ?;",
+ &plugin->select_message_fragment);
+
+ sql_prepare (plugin->dbh,
+ "SELECT fragment_id, message_id, group_generation\n"
+ "FROM messages\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ "ORDER BY fragment_id DESC LIMIT 1;",
+ &plugin->select_counters_message);
+
+ sql_prepare (plugin->dbh,
+ "SELECT max_state_message_id\n"
+ "FROM channels\n"
+ "WHERE pub_key = ? AND max_state_message_id IS NOT NULL;",
+ &plugin->select_counters_state);
+
+ sql_prepare (plugin->dbh,
+ "UPDATE channels\n"
+ "SET max_state_message_id = ?\n"
+ "WHERE pub_key = ?;",
+ &plugin->update_max_state_message_id);
+
+ sql_prepare (plugin->dbh,
+ "UPDATE channels\n"
+ "SET state_hash_message_id = ?\n"
+ "WHERE pub_key = ?;",
+ &plugin->update_state_hash_message_id);
+
+ sql_prepare (plugin->dbh,
+ "INSERT OR REPLACE INTO state\n"
+ " (channel_id, name, value_current, value_signed)\n"
+ "SELECT new.channel_id, new.name,\n"
+ " new.value_current, old.value_signed\n"
+ "FROM (SELECT (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AS channel_id,\n"
+ " ? AS name, ? AS value_current) AS new\n"
+ "LEFT JOIN (SELECT channel_id, name, value_signed\n"
+ " FROM state) AS old\n"
+ "ON new.channel_id = old.channel_id AND new.name = old.name;",
+ &plugin->insert_state_current);
+
+ sql_prepare (plugin->dbh,
+ "DELETE FROM state\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND (value_current IS NULL OR length(value_current) = 0)\n"
+ " AND (value_signed IS NULL OR length(value_signed) = 0);",
+ &plugin->delete_state_empty);
+
+ sql_prepare (plugin->dbh,
+ "UPDATE state\n"
+ "SET value_signed = value_current\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
+ &plugin->update_state_signed);
+
+ sql_prepare (plugin->dbh,
+ "DELETE FROM state\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
+ &plugin->delete_state);
+
+ sql_prepare (plugin->dbh,
+ "INSERT INTO state_sync (channel_id, name, value)\n"
+ "VALUES ((SELECT id FROM channels WHERE pub_key = ?), ?, ?);",
+ &plugin->insert_state_sync);
+
+ sql_prepare (plugin->dbh,
+ "INSERT INTO state\n"
+ " (channel_id, name, value_current, value_signed)\n"
+ "SELECT channel_id, name, value, value\n"
+ "FROM state_sync\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
+ &plugin->insert_state_from_sync);
+
+ sql_prepare (plugin->dbh,
+ "DELETE FROM state_sync\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
+ &plugin->delete_state_sync);
+
+ sql_prepare (plugin->dbh,
+ "SELECT value_current\n"
+ "FROM state\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND name = ?;",
+ &plugin->select_state_one);
+
+ sql_prepare (plugin->dbh,
+ "SELECT name, value_current\n"
+ "FROM state\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
+ " AND (name = ? OR substr(name, 1, ?) = ?);",
+ &plugin->select_state_prefix);
+
+ sql_prepare (plugin->dbh,
+ "SELECT name, value_signed\n"
+ "FROM state\n"
+ "WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)"
+ " AND value_signed IS NOT NULL;",
+ &plugin->select_state_signed);
+
+ 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;
+ while (NULL != (stmt = sqlite3_next_stmt (plugin->dbh, NULL)))
+ {
+ result = sqlite3_finalize (stmt);
+ if (SQLITE_OK != result)
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to close statement %p: %d\n", stmt, result);
+ }
+ if (SQLITE_OK != sqlite3_close (plugin->dbh))
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR, "sqlite3_close");
+
+ GNUNET_free_non_null (plugin->fn);
+}
+
+/**
+ * Execute a prepared statement with a @a channel_key argument.
+ *
+ * @param plugin Plugin handle.
+ * @param stmt Statement to execute.
+ * @param channel_key Public key of the channel.
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+exec_channel (struct Plugin *plugin, sqlite3_stmt *stmt,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key)
+{
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+/**
+ * Begin a transaction.
+ */
+static int
+transaction_begin (struct Plugin *plugin, enum Transactions transaction)
+{
+ sqlite3_stmt *stmt = plugin->transaction_begin;
+
+ if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ plugin->transaction = transaction;
+ return GNUNET_OK;
+}
+
+
+/**
+ * Commit current transaction.
+ */
+static int
+transaction_commit (struct Plugin *plugin)
+{
+ sqlite3_stmt *stmt = plugin->transaction_commit;
+
+ if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ plugin->transaction = TRANSACTION_NONE;
+ return GNUNET_OK;
+}
+
+
+/**
+ * Roll back current transaction.
+ */
+static int
+transaction_rollback (struct Plugin *plugin)
+{
+ sqlite3_stmt *stmt = plugin->transaction_rollback;
+
+ if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+ plugin->transaction = TRANSACTION_NONE;
+ return GNUNET_OK;
+}
+
+
+static int
+channel_key_store (struct Plugin *plugin,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key)
+{
+ sqlite3_stmt *stmt = plugin->insert_channel_key;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+
+static int
+slave_key_store (struct Plugin *plugin,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key)
+{
+ sqlite3_stmt *stmt = plugin->insert_slave_key;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, slave_key,
+ sizeof (*slave_key), SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Store join/leave events for a PSYC channel in order to be able to answer
+ * membership test queries later.
+ *
+ * @see GNUNET_PSYCSTORE_membership_store()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+sqlite_membership_store (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ int did_join,
+ uint64_t announced_at,
+ uint64_t effective_since,
+ uint64_t group_generation)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->insert_membership;
+
+ GNUNET_assert (TRANSACTION_NONE == plugin->transaction);
+
+ if (announced_at > INT64_MAX ||
+ effective_since > INT64_MAX ||
+ group_generation > INT64_MAX)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+
+ if (GNUNET_OK != channel_key_store (plugin, channel_key)
+ || GNUNET_OK != slave_key_store (plugin, slave_key))
+ return GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 2, slave_key,
+ sizeof (*slave_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int (stmt, 3, did_join)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 4, announced_at)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 5, effective_since)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 6, group_generation))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+/**
+ * Test if a member was admitted to the channel at the given message ID.
+ *
+ * @see GNUNET_PSYCSTORE_membership_test()
+ *
+ * @return #GNUNET_YES if the member was admitted, #GNUNET_NO if not,
+ * #GNUNET_SYSERR if there was en error.
+ */
+static int
+membership_test (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t message_id)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_membership;
+ int ret = GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 2, slave_key,
+ sizeof (*slave_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 3, message_id))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ ret = GNUNET_YES;
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+/**
+ * Store a message fragment sent to a channel.
+ *
+ * @see GNUNET_PSYCSTORE_fragment_store()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+fragment_store (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_MULTICAST_MessageHeader *msg,
+ uint32_t psycstore_flags)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->insert_fragment;
+
+ GNUNET_assert (TRANSACTION_NONE == plugin->transaction);
+
+ uint64_t fragment_id = GNUNET_ntohll (msg->fragment_id);
+ uint64_t fragment_offset = GNUNET_ntohll (msg->fragment_offset);
+ uint64_t message_id = GNUNET_ntohll (msg->message_id);
+ uint64_t group_generation = GNUNET_ntohll (msg->group_generation);
+
+ if (fragment_id > INT64_MAX || fragment_offset > INT64_MAX ||
+ message_id > INT64_MAX || group_generation > INT64_MAX)
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Tried to store fragment with a field > INT64_MAX: "
+ "%lu, %lu, %lu, %lu\n", fragment_id, fragment_offset,
+ message_id, group_generation);
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+
+ if (GNUNET_OK != channel_key_store (plugin, channel_key))
+ return GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 2, ntohl (msg->hop_counter) )
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 3, (const void *) &msg->signature,
+ sizeof (msg->signature), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 4, (const void *) &msg->purpose,
+ sizeof (msg->purpose), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 5, fragment_id)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 6, fragment_offset)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 7, message_id)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 8, group_generation)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 9, ntohl (msg->flags))
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 10, psycstore_flags)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 11, (const void *) &msg[1],
+ ntohs (msg->header.size)
+ - sizeof (*msg), SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+/**
+ * Set additional flags for a given message.
+ *
+ * They are OR'd with any existing flags set.
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+message_add_flags (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id,
+ uint32_t psycstore_flags)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->update_message_flags;
+ int ret = GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_int64 (stmt, 1, psycstore_flags)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 2, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 3, message_id))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = sqlite3_total_changes (plugin->dbh) > 0 ? GNUNET_OK : GNUNET_NO;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return ret;
+}
+
+static int
+fragment_row (sqlite3_stmt *stmt, GNUNET_PSYCSTORE_FragmentCallback cb,
+ void *cb_cls)
+{
+ int data_size = sqlite3_column_bytes (stmt, 9);
+ struct GNUNET_MULTICAST_MessageHeader *msg
+ = GNUNET_malloc (sizeof (*msg) + data_size);
+
+ msg->header.size = htons (sizeof (*msg) + data_size);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE);
+ msg->hop_counter = htonl ((uint32_t) sqlite3_column_int64 (stmt, 0));
+ GNUNET_memcpy (&msg->signature,
+ sqlite3_column_blob (stmt, 1),
+ sqlite3_column_bytes (stmt, 1));
+ GNUNET_memcpy (&msg->purpose,
+ sqlite3_column_blob (stmt, 2),
+ sqlite3_column_bytes (stmt, 2));
+ msg->fragment_id = GNUNET_htonll (sqlite3_column_int64 (stmt, 3));
+ msg->fragment_offset = GNUNET_htonll (sqlite3_column_int64 (stmt, 4));
+ msg->message_id = GNUNET_htonll (sqlite3_column_int64 (stmt, 5));
+ msg->group_generation = GNUNET_htonll (sqlite3_column_int64 (stmt, 6));
+ msg->flags = htonl (sqlite3_column_int64 (stmt, 7));
+ GNUNET_memcpy (&msg[1], sqlite3_column_blob (stmt, 9), data_size);
+
+ return cb (cb_cls, (void *) msg, sqlite3_column_int64 (stmt, 8));
+}
+
+
+static int
+fragment_select (struct Plugin *plugin, sqlite3_stmt *stmt,
+ uint64_t *returned_fragments,
+ GNUNET_PSYCSTORE_FragmentCallback cb, void *cb_cls)
+{
+ int ret = GNUNET_SYSERR;
+ int sql_ret;
+
+ do
+ {
+ sql_ret = sqlite3_step (stmt);
+ switch (sql_ret)
+ {
+ case SQLITE_DONE:
+ if (ret != GNUNET_OK)
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ ret = fragment_row (stmt, cb, cb_cls);
+ (*returned_fragments)++;
+ if (ret != GNUNET_YES)
+ sql_ret = SQLITE_DONE;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+ while (sql_ret == SQLITE_ROW);
+
+ return ret;
+}
+
+/**
+ * Retrieve a message fragment range by fragment ID.
+ *
+ * @see GNUNET_PSYCSTORE_fragment_get()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+fragment_get (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t first_fragment_id,
+ uint64_t last_fragment_id,
+ uint64_t *returned_fragments,
+ GNUNET_PSYCSTORE_FragmentCallback cb,
+ void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_fragments;
+ int ret = GNUNET_SYSERR;
+ *returned_fragments = 0;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 2, first_fragment_id)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 3, last_fragment_id))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ ret = fragment_select (plugin, stmt, returned_fragments, cb, cb_cls);
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Retrieve a message fragment range by fragment ID.
+ *
+ * @see GNUNET_PSYCSTORE_fragment_get_latest()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+fragment_get_latest (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t fragment_limit,
+ uint64_t *returned_fragments,
+ GNUNET_PSYCSTORE_FragmentCallback cb,
+ void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_latest_fragments;
+ int ret = GNUNET_SYSERR;
+ *returned_fragments = 0;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 2, fragment_limit))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ ret = fragment_select (plugin, stmt, returned_fragments, cb, cb_cls);
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Retrieve all fragments of a message ID range.
+ *
+ * @see GNUNET_PSYCSTORE_message_get()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+message_get (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t first_message_id,
+ uint64_t last_message_id,
+ uint64_t fragment_limit,
+ uint64_t *returned_fragments,
+ GNUNET_PSYCSTORE_FragmentCallback cb,
+ void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_messages;
+ int ret = GNUNET_SYSERR;
+ *returned_fragments = 0;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 2, first_message_id)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 3, last_message_id)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 4,
+ (0 != fragment_limit)
+ ? fragment_limit
+ : INT64_MAX))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ ret = fragment_select (plugin, stmt, returned_fragments, cb, cb_cls);
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Retrieve all fragments of the latest messages.
+ *
+ * @see GNUNET_PSYCSTORE_message_get_latest()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+message_get_latest (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_limit,
+ uint64_t *returned_fragments,
+ GNUNET_PSYCSTORE_FragmentCallback cb,
+ void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_latest_messages;
+ int ret = GNUNET_SYSERR;
+ *returned_fragments = 0;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 2, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 3, message_limit))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ ret = fragment_select (plugin, stmt, returned_fragments, cb, cb_cls);
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Retrieve a fragment of message specified by its message ID and fragment
+ * offset.
+ *
+ * @see GNUNET_PSYCSTORE_message_get_fragment()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+message_get_fragment (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id,
+ uint64_t fragment_offset,
+ GNUNET_PSYCSTORE_FragmentCallback cb,
+ void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_message_fragment;
+ int ret = GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 2, message_id)
+ || SQLITE_OK != sqlite3_bind_int64 (stmt, 3, fragment_offset))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ ret = fragment_row (stmt, cb, cb_cls);
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+/**
+ * Retrieve the max. values of message counters for a channel.
+ *
+ * @see GNUNET_PSYCSTORE_counters_get()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+counters_message_get (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t *max_fragment_id,
+ uint64_t *max_message_id,
+ uint64_t *max_group_generation)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_counters_message;
+ int ret = GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ *max_fragment_id = sqlite3_column_int64 (stmt, 0);
+ *max_message_id = sqlite3_column_int64 (stmt, 1);
+ *max_group_generation = sqlite3_column_int64 (stmt, 2);
+ ret = GNUNET_OK;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+/**
+ * Retrieve the max. values of state counters for a channel.
+ *
+ * @see GNUNET_PSYCSTORE_counters_get()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+counters_state_get (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t *max_state_message_id)
+{
+ struct Plugin *plugin = cls;
+ sqlite3_stmt *stmt = plugin->select_counters_state;
+ int ret = GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ *max_state_message_id = sqlite3_column_int64 (stmt, 0);
+ ret = GNUNET_OK;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Assign a value to a state variable.
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_assign (struct Plugin *plugin, sqlite3_stmt *stmt,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const char *name, const void *value, size_t value_size)
+{
+ int ret = GNUNET_SYSERR;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_text (stmt, 2, name, -1, SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 3, value, value_size,
+ SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = 0 < sqlite3_total_changes (plugin->dbh) ? GNUNET_OK : GNUNET_NO;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+
+ return ret;
+}
+
+
+static int
+update_message_id (struct Plugin *plugin, sqlite3_stmt *stmt,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id)
+{
+ if (SQLITE_OK != sqlite3_bind_int64 (stmt, 1, message_id)
+ || SQLITE_OK != sqlite3_bind_blob (stmt, 2, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else if (SQLITE_DONE != sqlite3_step (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Begin modifying current state.
+ */
+static int
+state_modify_begin (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id, uint64_t state_delta)
+{
+ struct Plugin *plugin = cls;
+
+ if (state_delta > 0)
+ {
+ /**
+ * We can only apply state modifiers in the current message if modifiers in
+ * the previous stateful message (message_id - state_delta) were already
+ * applied.
+ */
+
+ uint64_t max_state_message_id = 0;
+ int ret = counters_state_get (plugin, channel_key, &max_state_message_id);
+ switch (ret)
+ {
+ case GNUNET_OK:
+ case GNUNET_NO: // no state yet
+ ret = GNUNET_OK;
+ break;
+ default:
+ return ret;
+ }
+
+ if (max_state_message_id < message_id - state_delta)
+ return GNUNET_NO; /* some stateful messages not yet applied */
+ else if (message_id - state_delta < max_state_message_id)
+ return GNUNET_NO; /* changes already applied */
+ }
+
+ if (TRANSACTION_NONE != plugin->transaction)
+ {
+ /** @todo FIXME: wait for other transaction to finish */
+ return GNUNET_SYSERR;
+ }
+ return transaction_begin (plugin, TRANSACTION_STATE_MODIFY);
+}
+
+
+/**
+ * Set the current value of state variable.
+ *
+ * @see GNUNET_PSYCSTORE_state_modify()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_modify_op (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ enum GNUNET_PSYC_Operator op,
+ const char *name, const void *value, size_t value_size)
+{
+ struct Plugin *plugin = cls;
+ GNUNET_assert (TRANSACTION_STATE_MODIFY == plugin->transaction);
+
+ switch (op)
+ {
+ case GNUNET_PSYC_OP_ASSIGN:
+ return state_assign (plugin, plugin->insert_state_current, channel_key,
+ name, value, value_size);
+
+ default: /** @todo implement more state operations */
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+}
+
+
+/**
+ * End modifying current state.
+ */
+static int
+state_modify_end (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id)
+{
+ struct Plugin *plugin = cls;
+ GNUNET_assert (TRANSACTION_STATE_MODIFY == plugin->transaction);
+
+ return
+ GNUNET_OK == exec_channel (plugin, plugin->delete_state_empty, channel_key)
+ && GNUNET_OK == update_message_id (plugin,
+ plugin->update_max_state_message_id,
+ channel_key, message_id)
+ && GNUNET_OK == transaction_commit (plugin)
+ ? GNUNET_OK : GNUNET_SYSERR;
+}
+
+
+/**
+ * Begin state synchronization.
+ */
+static int
+state_sync_begin (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key)
+{
+ struct Plugin *plugin = cls;
+ return exec_channel (plugin, plugin->delete_state_sync, channel_key);
+}
+
+
+/**
+ * Assign current value of a state variable.
+ *
+ * @see GNUNET_PSYCSTORE_state_modify()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_sync_assign (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const char *name, const void *value, size_t value_size)
+{
+ struct Plugin *plugin = cls;
+ return state_assign (cls, plugin->insert_state_sync, channel_key,
+ name, value, value_size);
+}
+
+
+/**
+ * End modifying current state.
+ */
+static int
+state_sync_end (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t max_state_message_id,
+ uint64_t state_hash_message_id)
+{
+ struct Plugin *plugin = cls;
+ int ret = GNUNET_SYSERR;
+
+ if (TRANSACTION_NONE != plugin->transaction)
+ {
+ /** @todo FIXME: wait for other transaction to finish */
+ return GNUNET_SYSERR;
+ }
+
+ GNUNET_OK == transaction_begin (plugin, TRANSACTION_STATE_SYNC)
+ && GNUNET_OK == exec_channel (plugin, plugin->delete_state, channel_key)
+ && GNUNET_OK == exec_channel (plugin, plugin->insert_state_from_sync,
+ channel_key)
+ && GNUNET_OK == exec_channel (plugin, plugin->delete_state_sync,
+ channel_key)
+ && GNUNET_OK == update_message_id (plugin,
+ plugin->update_state_hash_message_id,
+ channel_key, state_hash_message_id)
+ && GNUNET_OK == update_message_id (plugin,
+ plugin->update_max_state_message_id,
+ channel_key, max_state_message_id)
+ && GNUNET_OK == transaction_commit (plugin)
+ ? ret = GNUNET_OK
+ : transaction_rollback (plugin);
+ return ret;
+}
+
+
+/**
+ * Delete the whole state.
+ *
+ * @see GNUNET_PSYCSTORE_state_reset()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_reset (void *cls, const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key)
+{
+ struct Plugin *plugin = cls;
+ return exec_channel (plugin, plugin->delete_state, channel_key);
+}
+
+
+/**
+ * Update signed values of state variables in the state store.
+ *
+ * @see GNUNET_PSYCSTORE_state_hash_update()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_update_signed (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key)
+{
+ struct Plugin *plugin = cls;
+ return exec_channel (plugin, plugin->update_state_signed, channel_key);
+}
+
+
+/**
+ * Retrieve a state variable by name.
+ *
+ * @see GNUNET_PSYCSTORE_state_get()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_get (void *cls, const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const char *name, GNUNET_PSYCSTORE_StateCallback cb, void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ int ret = GNUNET_SYSERR;
+
+ sqlite3_stmt *stmt = plugin->select_state_one;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key),
+ SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_text (stmt, 2, name, -1, SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ switch (sqlite3_step (stmt))
+ {
+ case SQLITE_DONE:
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ ret = cb (cb_cls, name, sqlite3_column_blob (stmt, 0),
+ sqlite3_column_bytes (stmt, 0));
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Retrieve all state variables for a channel with the given prefix.
+ *
+ * @see GNUNET_PSYCSTORE_state_get_prefix()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_get_prefix (void *cls, const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const char *name, GNUNET_PSYCSTORE_StateCallback cb,
+ void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ int ret = GNUNET_SYSERR;
+ sqlite3_stmt *stmt = plugin->select_state_prefix;
+ size_t name_len = strlen (name);
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_text (stmt, 2, name, name_len, SQLITE_STATIC)
+ || SQLITE_OK != sqlite3_bind_int (stmt, 3, name_len)
+ || SQLITE_OK != sqlite3_bind_text (stmt, 4, name, name_len, SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ int sql_ret;
+ do
+ {
+ sql_ret = sqlite3_step (stmt);
+ switch (sql_ret)
+ {
+ case SQLITE_DONE:
+ if (ret != GNUNET_OK)
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ ret = cb (cb_cls, (const char *) sqlite3_column_text (stmt, 0),
+ sqlite3_column_blob (stmt, 1),
+ sqlite3_column_bytes (stmt, 1));
+ if (ret != GNUNET_YES)
+ sql_ret = SQLITE_DONE;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+ while (sql_ret == SQLITE_ROW);
+ }
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+ return ret;
+}
+
+
+/**
+ * Retrieve all signed state variables for a channel.
+ *
+ * @see GNUNET_PSYCSTORE_state_get_signed()
+ *
+ * @return #GNUNET_OK on success, else #GNUNET_SYSERR
+ */
+static int
+state_get_signed (void *cls,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ GNUNET_PSYCSTORE_StateCallback cb, void *cb_cls)
+{
+ struct Plugin *plugin = cls;
+ int ret = GNUNET_SYSERR;
+
+ sqlite3_stmt *stmt = plugin->select_state_signed;
+
+ if (SQLITE_OK != sqlite3_bind_blob (stmt, 1, channel_key,
+ sizeof (*channel_key), SQLITE_STATIC))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_bind");
+ }
+ else
+ {
+ int sql_ret;
+ do
+ {
+ sql_ret = sqlite3_step (stmt);
+ switch (sql_ret)
+ {
+ case SQLITE_DONE:
+ if (ret != GNUNET_OK)
+ ret = GNUNET_NO;
+ break;
+ case SQLITE_ROW:
+ ret = cb (cb_cls, (const char *) sqlite3_column_text (stmt, 0),
+ sqlite3_column_blob (stmt, 1),
+ sqlite3_column_bytes (stmt, 1));
+ if (ret != GNUNET_YES)
+ sql_ret = SQLITE_DONE;
+ break;
+ default:
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_step");
+ }
+ }
+ while (sql_ret == SQLITE_ROW);
+ }
+
+ if (SQLITE_OK != sqlite3_reset (stmt))
+ {
+ LOG_SQLITE (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "sqlite3_reset");
+ }
+
+ return ret;
+}
+
+
+/**
+ * Entry point for the plugin.
+ *
+ * @param cls The struct GNUNET_CONFIGURATION_Handle.
+ * @return NULL on error, otherwise the plugin context
+ */
+void *
+libgnunet_plugin_psycstore_sqlite_init (void *cls)
+{
+ static struct Plugin plugin;
+ const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+ struct GNUNET_PSYCSTORE_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_new (struct GNUNET_PSYCSTORE_PluginFunctions);
+ api->cls = &plugin;
+ api->membership_store = &sqlite_membership_store;
+ api->membership_test = &membership_test;
+ api->fragment_store = &fragment_store;
+ api->message_add_flags = &message_add_flags;
+ api->fragment_get = &fragment_get;
+ api->fragment_get_latest = &fragment_get_latest;
+ api->message_get = &message_get;
+ api->message_get_latest = &message_get_latest;
+ api->message_get_fragment = &message_get_fragment;
+ api->counters_message_get = &counters_message_get;
+ api->counters_state_get = &counters_state_get;
+ api->state_modify_begin = &state_modify_begin;
+ api->state_modify_op = &state_modify_op;
+ api->state_modify_end = &state_modify_end;
+ api->state_sync_begin = &state_sync_begin;
+ api->state_sync_assign = &state_sync_assign;
+ api->state_sync_end = &state_sync_end;
+ api->state_reset = &state_reset;
+ api->state_update_signed = &state_update_signed;
+ api->state_get = &state_get;
+ api->state_get_prefix = &state_get_prefix;
+ api->state_get_signed = &state_get_signed;
+
+ 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_psycstore_sqlite_done (void *cls)
+{
+ struct GNUNET_PSYCSTORE_PluginFunctions *api = cls;
+ struct Plugin *plugin = api->cls;
+
+ database_shutdown (plugin);
+ plugin->cfg = NULL;
+ GNUNET_free (api);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "SQLite plugin is finished\n");
+ return NULL;
+}
+
+/* end of plugin_psycstore_sqlite.c */