/*
* 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 .
*/
/**
* @file psycstore/plugin_psycstore_mysql.c
* @brief mysql-based psycstore backend
* @author Gabor X Toth
* @author Christian Grothoff
* @author Christophe Genevey
*/
#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 "gnunet_my_lib.h"
#include "gnunet_mysql_lib.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
#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_MYSQL(db, level, cmd, stmt) \
do { \
GNUNET_log_from (level, "psycstore-mysql", \
_("`%s' failed at %s:%d with error: %s\n"), \
cmd, __FILE__, __LINE__, \
mysql_stmt_error (GNUNET_MYSQL_statement_get_stmt(stmt))); \
} while (0)
#define LOG(kind,...) GNUNET_log_from (kind, "psycstore-mysql", __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;
/**
* MySQL context.
*/
struct GNUNET_MYSQL_Context *mc;
/**
* Current transaction.
*/
enum Transactions transaction;
/**
* Precompiled SQL for channel_key_store()
*/
struct GNUNET_MYSQL_StatementHandle *insert_channel_key;
/**
* Precompiled SQL for slave_key_store()
*/
struct GNUNET_MYSQL_StatementHandle *insert_slave_key;
/**
* Precompiled SQL for membership_store()
*/
struct GNUNET_MYSQL_StatementHandle *insert_membership;
/**
* Precompiled SQL for membership_test()
*/
struct GNUNET_MYSQL_StatementHandle *select_membership;
/**
* Precompiled SQL for fragment_store()
*/
struct GNUNET_MYSQL_StatementHandle *insert_fragment;
/**
* Precompiled SQL for message_add_flags()
*/
struct GNUNET_MYSQL_StatementHandle *update_message_flags;
/**
* Precompiled SQL for fragment_get()
*/
struct GNUNET_MYSQL_StatementHandle *select_fragments;
/**
* Precompiled SQL for fragment_get()
*/
struct GNUNET_MYSQL_StatementHandle *select_latest_fragments;
/**
* Precompiled SQL for message_get()
*/
struct GNUNET_MYSQL_StatementHandle *select_messages;
/**
* Precompiled SQL for message_get()
*/
struct GNUNET_MYSQL_StatementHandle *select_latest_messages;
/**
* Precompiled SQL for message_get_fragment()
*/
struct GNUNET_MYSQL_StatementHandle *select_message_fragment;
/**
* Precompiled SQL for counters_get_message()
*/
struct GNUNET_MYSQL_StatementHandle *select_counters_message;
/**
* Precompiled SQL for counters_get_state()
*/
struct GNUNET_MYSQL_StatementHandle *select_counters_state;
/**
* Precompiled SQL for state_modify_end()
*/
struct GNUNET_MYSQL_StatementHandle *update_state_hash_message_id;
/**
* Precompiled SQL for state_sync_end()
*/
struct GNUNET_MYSQL_StatementHandle *update_max_state_message_id;
/**
* Precompiled SQL for state_modify_op()
*/
struct GNUNET_MYSQL_StatementHandle *insert_state_current;
/**
* Precompiled SQL for state_modify_end()
*/
struct GNUNET_MYSQL_StatementHandle *delete_state_empty;
/**
* Precompiled SQL for state_set_signed()
*/
struct GNUNET_MYSQL_StatementHandle *update_state_signed;
/**
* Precompiled SQL for state_sync()
*/
struct GNUNET_MYSQL_StatementHandle *insert_state_sync;
/**
* Precompiled SQL for state_sync()
*/
struct GNUNET_MYSQL_StatementHandle *delete_state;
/**
* Precompiled SQL for state_sync()
*/
struct GNUNET_MYSQL_StatementHandle *insert_state_from_sync;
/**
* Precompiled SQL for state_sync()
*/
struct GNUNET_MYSQL_StatementHandle *delete_state_sync;
/**
* Precompiled SQL for state_get_signed()
*/
struct GNUNET_MYSQL_StatementHandle *select_state_signed;
/**
* Precompiled SQL for state_get()
*/
struct GNUNET_MYSQL_StatementHandle *select_state_one;
/**
* Precompiled SQL for state_get_prefix()
*/
struct GNUNET_MYSQL_StatementHandle *select_state_prefix;
};
#if DEBUG_PSYCSTORE
static void
mysql_trace (void *cls, const char *sql)
{
LOG(GNUNET_ERROR_TYPE_DEBUG, "MYSQL 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 #GNUNET_OK on success, #GNUNET_SYSERR on failure
*/
static int
mysql_prepare (struct GNUNET_MYSQL_Context *mc,
const char *sql,
struct GNUNET_MYSQL_StatementHandle **stmt)
{
*stmt = GNUNET_MYSQL_statement_prepare (mc,
sql);
if (NULL == *stmt)
{
LOG (GNUNET_ERROR_TYPE_ERROR,
_("Error preparing SQL query: %s\n %s\n"),
mysql_stmt_error (GNUNET_MYSQL_statement_get_stmt (*stmt)),
sql);
return GNUNET_SYSERR;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Prepared `%s' / %p\n",
sql,
stmt);
return GNUNET_OK;
}
/**
* 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)
{
/* Open database and precompile statements */
plugin->mc = GNUNET_MYSQL_context_create (plugin->cfg,
"psycstore-mysql");
if (NULL == plugin->mc)
{
LOG (GNUNET_ERROR_TYPE_ERROR,
_("Unable to initialize Mysql.\n"));
return GNUNET_SYSERR;
}
#define STMT_RUN(sql) \
if (GNUNET_OK != \
GNUNET_MYSQL_statement_run (plugin->mc, \
sql)) \
{ \
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, \
_("Failed to run SQL statement `%s'\n"), \
sql); \
return GNUNET_SYSERR; \
}
/* Create tables */
STMT_RUN ("CREATE TABLE IF NOT EXISTS channels (\n"
" id BIGINT UNSIGNED AUTO_INCREMENT,\n"
" pub_key BLOB(32),\n"
" max_state_message_id BIGINT UNSIGNED,\n"
" state_hash_message_id BIGINT UNSIGNED,\n"
" PRIMARY KEY(id),\n"
" UNIQUE KEY(pub_key(32))\n"
");");
STMT_RUN ("CREATE TABLE IF NOT EXISTS slaves (\n"
" id BIGINT UNSIGNED AUTO_INCREMENT,\n"
" pub_key BLOB(32),\n"
" PRIMARY KEY(id),\n"
" UNIQUE KEY(pub_key(32))\n"
");");
STMT_RUN ("CREATE TABLE IF NOT EXISTS membership (\n"
" channel_id BIGINT UNSIGNED NOT NULL REFERENCES channels(id),\n"
" slave_id BIGINT UNSIGNED NOT NULL REFERENCES slaves(id),\n"
" did_join TINYINT NOT NULL,\n"
" announced_at BIGINT UNSIGNED NOT NULL,\n"
" effective_since BIGINT UNSIGNED NOT NULL,\n"
" group_generation BIGINT UNSIGNED NOT NULL\n"
");");
/*** FIX because IF NOT EXISTS doesn't work ***/
GNUNET_MYSQL_statement_run (plugin->mc,
"CREATE INDEX idx_membership_channel_id_slave_id "
"ON membership (channel_id, slave_id);");
/** @todo messages table: add method_name column */
STMT_RUN ("CREATE TABLE IF NOT EXISTS messages (\n"
" channel_id BIGINT UNSIGNED NOT NULL REFERENCES channels(id),\n"
" hop_counter BIGINT UNSIGNED NOT NULL,\n"
" signature BLOB,\n"
" purpose BLOB,\n"
" fragment_id BIGINT UNSIGNED NOT NULL,\n"
" fragment_offset BIGINT UNSIGNED NOT NULL,\n"
" message_id BIGINT UNSIGNED NOT NULL,\n"
" group_generation BIGINT UNSIGNED NOT NULL,\n"
" multicast_flags BIGINT UNSIGNED NOT NULL,\n"
" psycstore_flags BIGINT UNSIGNED NOT NULL,\n"
" data BLOB,\n"
" PRIMARY KEY (channel_id, fragment_id),\n"
" UNIQUE KEY(channel_id, message_id, fragment_offset)\n"
");");
STMT_RUN ("CREATE TABLE IF NOT EXISTS state (\n"
" channel_id BIGINT UNSIGNED NOT NULL REFERENCES channels(id),\n"
" name TEXT NOT NULL,\n"
" value_current BLOB,\n"
" value_signed BLOB\n"
//" PRIMARY KEY (channel_id, name(255))\n"
");");
STMT_RUN ("CREATE TABLE IF NOT EXISTS state_sync (\n"
" channel_id BIGINT UNSIGNED NOT NULL REFERENCES channels(id),\n"
" name TEXT NOT NULL,\n"
" value BLOB\n"
//" PRIMARY KEY (channel_id, name(255))\n"
");");
#undef STMT_RUN
/* Prepare statements */
#define PREP(stmt,handle) \
if (GNUNET_OK != mysql_prepare (plugin->mc, stmt, handle)) \
{ \
GNUNET_break (0); \
return GNUNET_SYSERR; \
}
PREP ("INSERT IGNORE INTO channels (pub_key) VALUES (?);",
&plugin->insert_channel_key);
PREP ("INSERT IGNORE INTO slaves (pub_key) VALUES (?);",
&plugin->insert_slave_key);
PREP ("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);
PREP ("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);
PREP ("INSERT 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);
PREP ("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);
PREP ("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 <= ? LIMIT 1;",
&plugin->select_fragments);
/** @todo select_messages: add method_prefix filter */
PREP ("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 <= ?\n"
"LIMIT ?;",
&plugin->select_messages);
PREP ("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 */
PREP ("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);
PREP ("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);
PREP ("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);
PREP ("SELECT max_state_message_id\n"
"FROM channels\n"
"WHERE pub_key = ? AND max_state_message_id IS NOT NULL;",
&plugin->select_counters_state);
PREP ("UPDATE channels\n"
"SET max_state_message_id = ?\n"
"WHERE pub_key = ?;",
&plugin->update_max_state_message_id);
PREP ("UPDATE channels\n"
"SET state_hash_message_id = ?\n"
"WHERE pub_key = ?;",
&plugin->update_state_hash_message_id);
PREP ("REPLACE INTO state\n"
" (channel_id, name, value_current, value_signed)\n"
"SELECT new.channel_id, new.name, new.value_current, old.value_signed\n"
"FROM (SELECT (SELECT id FROM channels WHERE pub_key = ?) AS channel_id,\n"
" (SELECT ?) AS name,\n"
" (SELECT ?) AS value_current\n"
" ) 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);
PREP ("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);
PREP ("UPDATE state\n"
"SET value_signed = value_current\n"
"WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
&plugin->update_state_signed);
PREP ("DELETE FROM state\n"
"WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
&plugin->delete_state);
PREP ("INSERT INTO state_sync (channel_id, name, value)\n"
"VALUES ((SELECT id FROM channels WHERE pub_key = ?), ?, ?);",
&plugin->insert_state_sync);
PREP ("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);
PREP ("DELETE FROM state_sync\n"
"WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?);",
&plugin->delete_state_sync);
PREP ("SELECT value_current\n"
"FROM state\n"
"WHERE channel_id = (SELECT id FROM channels WHERE pub_key = ?)\n"
" AND name = ?;",
&plugin->select_state_one);
PREP ("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);
PREP ("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);
#undef PREP
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)
{
GNUNET_MYSQL_context_destroy (plugin->mc);
}
/**
* 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, struct GNUNET_MYSQL_StatementHandle *stmt,
const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key)
{
struct GNUNET_MY_QueryParam params[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_channel", stmt);
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
/**
* Begin a transaction.
*/
static int
transaction_begin (struct Plugin *plugin, enum Transactions transaction)
{
if (GNUNET_OK != GNUNET_MYSQL_statement_run (plugin->mc, "BEGIN"))
{
LOG(GNUNET_ERROR_TYPE_ERROR, "transaction_begin failed");
return GNUNET_SYSERR;
}
plugin->transaction = transaction;
return GNUNET_OK;
}
/**
* Commit current transaction.
*/
static int
transaction_commit (struct Plugin *plugin)
{
if (GNUNET_OK != GNUNET_MYSQL_statement_run (plugin->mc, "COMMIT"))
{
LOG(GNUNET_ERROR_TYPE_ERROR, "transaction_commit failed");
return GNUNET_SYSERR;
}
plugin->transaction = TRANSACTION_NONE;
return GNUNET_OK;
}
/**
* Roll back current transaction.
*/
static int
transaction_rollback (struct Plugin *plugin)
{
if (GNUNET_OK != GNUNET_MYSQL_statement_run (plugin->mc, "ROLLBACK"))
{
LOG(GNUNET_ERROR_TYPE_ERROR, "transaction_rollback failed");
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)
{
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->insert_channel_key;
struct GNUNET_MY_QueryParam params[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
static int
slave_key_store (struct Plugin *plugin,
const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key)
{
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->insert_slave_key;
struct GNUNET_MY_QueryParam params[] = {
GNUNET_MY_query_param_auto_from_type (slave_key),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
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
mysql_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;
uint32_t idid_join = (uint32_t)did_join;
struct GNUNET_MYSQL_StatementHandle *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;
struct GNUNET_MY_QueryParam params[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_auto_from_type (slave_key),
GNUNET_MY_query_param_uint32 (&idid_join),
GNUNET_MY_query_param_uint64 (&announced_at),
GNUNET_MY_query_param_uint64 (&effective_since),
GNUNET_MY_query_param_uint64 (&group_generation),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_membership;
uint32_t did_join = 0;
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_auto_from_type (slave_key),
GNUNET_MY_query_param_uint64 (&message_id),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
return GNUNET_SYSERR;
}
struct GNUNET_MY_ResultSpec results_select[] = {
GNUNET_MY_result_spec_uint32 (&did_join),
GNUNET_MY_result_spec_end
};
switch (GNUNET_MY_extract_result (stmt, results_select))
{
case GNUNET_NO:
ret = GNUNET_NO;
break;
case GNUNET_OK:
ret = GNUNET_YES;
break;
default:
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *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);
uint64_t hop_counter = ntohl(msg->hop_counter);
uint64_t flags = ntohl(msg->flags);
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;
struct GNUNET_MY_QueryParam params_insert[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&hop_counter),
GNUNET_MY_query_param_auto_from_type (&msg->signature),
GNUNET_MY_query_param_auto_from_type (&msg->purpose),
GNUNET_MY_query_param_uint64 (&fragment_id),
GNUNET_MY_query_param_uint64 (&fragment_offset),
GNUNET_MY_query_param_uint64 (&message_id),
GNUNET_MY_query_param_uint64 (&group_generation),
GNUNET_MY_query_param_uint64 (&flags),
GNUNET_MY_query_param_uint32 (&psycstore_flags),
GNUNET_MY_query_param_fixed_size (&msg[1], ntohs (msg->header.size)
- sizeof (*msg)),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_insert))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->update_message_flags;
int sql_ret;
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params_update[] = {
GNUNET_MY_query_param_uint32 (&psycstore_flags),
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&message_id),
GNUNET_MY_query_param_end
};
sql_ret = GNUNET_MY_exec_prepared (plugin->mc, stmt, params_update);
switch (sql_ret)
{
case GNUNET_OK:
ret = GNUNET_OK;
break;
default:
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
return ret;
}
static int
fragment_row (struct GNUNET_MYSQL_StatementHandle *stmt,
GNUNET_PSYCSTORE_FragmentCallback cb,
void *cb_cls,
uint64_t *returned_fragments)
{
uint32_t hop_counter;
void *signature = NULL;
void *purpose = NULL;
size_t signature_size;
size_t purpose_size;
uint64_t fragment_id;
uint64_t fragment_offset;
uint64_t message_id;
uint64_t group_generation;
uint64_t flags;
void *buf;
size_t buf_size;
int ret = GNUNET_SYSERR;
int sql_ret;
struct GNUNET_MULTICAST_MessageHeader *mp;
uint64_t msg_flags;
struct GNUNET_MY_ResultSpec results[] = {
GNUNET_MY_result_spec_uint32 (&hop_counter),
GNUNET_MY_result_spec_variable_size (&signature, &signature_size),
GNUNET_MY_result_spec_variable_size (&purpose, &purpose_size),
GNUNET_MY_result_spec_uint64 (&fragment_id),
GNUNET_MY_result_spec_uint64 (&fragment_offset),
GNUNET_MY_result_spec_uint64 (&message_id),
GNUNET_MY_result_spec_uint64 (&group_generation),
GNUNET_MY_result_spec_uint64 (&msg_flags),
GNUNET_MY_result_spec_uint64 (&flags),
GNUNET_MY_result_spec_variable_size (&buf,
&buf_size),
GNUNET_MY_result_spec_end
};
do
{
sql_ret = GNUNET_MY_extract_result (stmt, results);
switch (sql_ret)
{
case GNUNET_NO:
if (ret != GNUNET_YES)
ret = GNUNET_NO;
break;
case GNUNET_YES:
mp = GNUNET_malloc (sizeof (*mp) + buf_size);
mp->header.size = htons (sizeof (*mp) + buf_size);
mp->header.type = htons (GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE);
mp->hop_counter = htonl (hop_counter);
GNUNET_memcpy (&mp->signature,
signature,
signature_size);
GNUNET_memcpy (&mp->purpose,
purpose,
purpose_size);
mp->fragment_id = GNUNET_htonll (fragment_id);
mp->fragment_offset = GNUNET_htonll (fragment_offset);
mp->message_id = GNUNET_htonll (message_id);
mp->group_generation = GNUNET_htonll (group_generation);
mp->flags = htonl(msg_flags);
GNUNET_memcpy (&mp[1],
buf,
buf_size);
ret = cb (cb_cls, mp, (enum GNUNET_PSYCSTORE_MessageFlags) flags);
if (NULL != returned_fragments)
(*returned_fragments)++;
GNUNET_MY_cleanup_result (results);
break;
default:
LOG_MYSQL (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
}
}
while (GNUNET_YES == sql_ret);
// for debugging
if (GNUNET_NO == ret)
GNUNET_log (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
"Empty result set\n");
return ret;
}
static int
fragment_select (struct Plugin *plugin,
struct GNUNET_MYSQL_StatementHandle *stmt,
struct GNUNET_MY_QueryParam *params,
uint64_t *returned_fragments,
GNUNET_PSYCSTORE_FragmentCallback cb,
void *cb_cls)
{
int ret = GNUNET_SYSERR;
int sql_ret;
sql_ret = GNUNET_MY_exec_prepared (plugin->mc, stmt, params);
switch (sql_ret)
{
case GNUNET_NO:
if (ret != GNUNET_YES)
ret = GNUNET_NO;
break;
case GNUNET_YES:
ret = fragment_row (stmt, cb, cb_cls, returned_fragments);
break;
default:
LOG_MYSQL (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_fragments;
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&first_fragment_id),
GNUNET_MY_query_param_uint64 (&last_fragment_id),
GNUNET_MY_query_param_end
};
*returned_fragments = 0;
ret = fragment_select (plugin, stmt, params_select, returned_fragments, cb, cb_cls);
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL (plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_latest_fragments;
int ret = GNUNET_SYSERR;
*returned_fragments = 0;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&fragment_limit),
GNUNET_MY_query_param_end
};
ret = fragment_select (plugin, stmt, params_select, returned_fragments, cb, cb_cls);
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_messages;
int ret;
if (0 == fragment_limit)
fragment_limit = UINT64_MAX;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&first_message_id),
GNUNET_MY_query_param_uint64 (&last_message_id),
GNUNET_MY_query_param_uint64 (&fragment_limit),
GNUNET_MY_query_param_end
};
*returned_fragments = 0;
ret = fragment_select (plugin, stmt, params_select, returned_fragments, cb, cb_cls);
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_latest_messages;
int ret = GNUNET_SYSERR;
*returned_fragments = 0;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&message_limit),
GNUNET_MY_query_param_end
};
ret = fragment_select (plugin, stmt, params_select, returned_fragments, cb, cb_cls);
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_message_fragment;
int sql_ret;
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_uint64 (&message_id),
GNUNET_MY_query_param_uint64 (&fragment_offset),
GNUNET_MY_query_param_end
};
sql_ret = GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select);
switch (sql_ret)
{
case GNUNET_NO:
ret = GNUNET_NO;
break;
case GNUNET_OK:
ret = fragment_row (stmt, cb, cb_cls, NULL);
break;
default:
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_counters_message;
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
return GNUNET_SYSERR;
}
struct GNUNET_MY_ResultSpec results_select[] = {
GNUNET_MY_result_spec_uint64 (max_fragment_id),
GNUNET_MY_result_spec_uint64 (max_message_id),
GNUNET_MY_result_spec_uint64 (max_group_generation),
GNUNET_MY_result_spec_end
};
ret = GNUNET_MY_extract_result (stmt, results_select);
if (GNUNET_OK != ret)
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_counters_state;
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
return GNUNET_SYSERR;
}
struct GNUNET_MY_ResultSpec results_select[] = {
GNUNET_MY_result_spec_uint64 (max_state_message_id),
GNUNET_MY_result_spec_end
};
ret = GNUNET_MY_extract_result (stmt, results_select);
if (GNUNET_OK != ret)
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
return ret;
}
/**
* Assign a value to a state variable.
*
* @return #GNUNET_OK on success, else #GNUNET_SYSERR
*/
static int
state_assign (struct Plugin *plugin, struct GNUNET_MYSQL_StatementHandle *stmt,
const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
const char *name, const void *value, size_t value_size)
{
int ret = GNUNET_SYSERR;
struct GNUNET_MY_QueryParam params[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_string (name),
GNUNET_MY_query_param_fixed_size(value, value_size),
GNUNET_MY_query_param_end
};
ret = GNUNET_MY_exec_prepared (plugin->mc, stmt, params);
if (GNUNET_OK != ret)
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
return ret;
}
static int
update_message_id (struct Plugin *plugin, struct GNUNET_MYSQL_StatementHandle *stmt,
const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
uint64_t message_id)
{
struct GNUNET_MY_QueryParam params[] = {
GNUNET_MY_query_param_uint64 (&message_id),
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc,
stmt,
params))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql execute prepared", stmt);
return GNUNET_SYSERR;
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
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;
int sql_ret ;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_state_one;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_string (name),
GNUNET_MY_query_param_end
};
void *value_current = NULL;
size_t value_size = 0;
struct GNUNET_MY_ResultSpec results[] = {
GNUNET_MY_result_spec_variable_size (&value_current, &value_size),
GNUNET_MY_result_spec_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
}
else
{
sql_ret = GNUNET_MY_extract_result (stmt, results);
switch (sql_ret)
{
case GNUNET_NO:
ret = GNUNET_NO;
break;
case GNUNET_YES:
ret = cb (cb_cls, name, value_current, value_size);
break;
default:
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
}
}
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_state_prefix;
uint32_t name_len = (uint32_t) strlen (name);
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_string (name),
GNUNET_MY_query_param_uint32 (&name_len),
GNUNET_MY_query_param_string (name),
GNUNET_MY_query_param_end
};
char *name2 = "";
void *value_current = NULL;
size_t value_size = 0;
struct GNUNET_MY_ResultSpec results[] = {
GNUNET_MY_result_spec_string (&name2),
GNUNET_MY_result_spec_variable_size (&value_current, &value_size),
GNUNET_MY_result_spec_end
};;
int sql_ret;
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
return GNUNET_SYSERR;
}
do
{
sql_ret = GNUNET_MY_extract_result (stmt, results);
switch (sql_ret)
{
case GNUNET_NO:
if (ret != GNUNET_YES)
ret = GNUNET_NO;
break;
case GNUNET_YES:
ret = cb (cb_cls, (const char *) name2, value_current, value_size);
if (ret != GNUNET_YES)
sql_ret = GNUNET_NO;
break;
default:
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
}
}
while (sql_ret == GNUNET_YES);
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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;
struct GNUNET_MYSQL_StatementHandle *stmt = plugin->select_state_signed;
struct GNUNET_MY_QueryParam params_select[] = {
GNUNET_MY_query_param_auto_from_type (channel_key),
GNUNET_MY_query_param_end
};
int sql_ret;
char *name = "";
void *value_signed = NULL;
size_t value_size = 0;
struct GNUNET_MY_ResultSpec results[] = {
GNUNET_MY_result_spec_string (&name),
GNUNET_MY_result_spec_variable_size (&value_signed, &value_size),
GNUNET_MY_result_spec_end
};
if (GNUNET_OK != GNUNET_MY_exec_prepared (plugin->mc, stmt, params_select))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql exec_prepared", stmt);
return GNUNET_SYSERR;
}
do
{
sql_ret = GNUNET_MY_extract_result (stmt, results);
switch (sql_ret)
{
case GNUNET_NO:
if (ret != GNUNET_YES)
ret = GNUNET_NO;
break;
case GNUNET_YES:
ret = cb (cb_cls, (const char *) name, value_signed, value_size);
if (ret != GNUNET_YES)
sql_ret = GNUNET_NO;
break;
default:
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql extract_result", stmt);
}
}
while (sql_ret == GNUNET_YES);
if (0 != mysql_stmt_reset (GNUNET_MYSQL_statement_get_stmt (stmt)))
{
LOG_MYSQL(plugin, GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"mysql_stmt_reset", stmt);
return GNUNET_SYSERR;
}
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_mysql_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 = &mysql_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, _("Mysql 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_mysql_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, "Mysql plugin is finished\n");
return NULL;
}
/* end of plugin_psycstore_mysql.c */