/*
  +----------------------------------------------------------------------+
  | Copyright © The PHP Group and Contributors.                          |
  +----------------------------------------------------------------------+
  | This source file is subject to the Modified BSD License that is      |
  | bundled with this package in the file LICENSE, and is available      |
  | through the World Wide Web at <https://www.php.net/license/>.        |
  |                                                                      |
  | SPDX-License-Identifier: BSD-3-Clause                                |
  +----------------------------------------------------------------------+
  | Authors: Andrey Hristov <andrey@php.net>                             |
  |          Ulf Wendel <uw@php.net>                                     |
  |          Georg Richter <georg@php.net>                               |
  +----------------------------------------------------------------------+
*/

#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_debug.h"


/* {{{ mysqlnd_stats_values_names */
const MYSQLND_STRING mysqlnd_stats_values_names[STAT_LAST] =
{
	{ MYSQLND_STR_W_LEN("bytes_sent") },
	{ MYSQLND_STR_W_LEN("bytes_received") },
	{ MYSQLND_STR_W_LEN("packets_sent") },
	{ MYSQLND_STR_W_LEN("packets_received") },
	{ MYSQLND_STR_W_LEN("protocol_overhead_in") },
	{ MYSQLND_STR_W_LEN("protocol_overhead_out") },
	{ MYSQLND_STR_W_LEN("bytes_received_ok_packet") },
	{ MYSQLND_STR_W_LEN("bytes_received_eof_packet") },
	{ MYSQLND_STR_W_LEN("bytes_received_rset_header_packet") },
	{ MYSQLND_STR_W_LEN("bytes_received_rset_field_meta_packet") },
	{ MYSQLND_STR_W_LEN("bytes_received_rset_row_packet") },
	{ MYSQLND_STR_W_LEN("bytes_received_prepare_response_packet") },
	{ MYSQLND_STR_W_LEN("bytes_received_change_user_packet") },
	{ MYSQLND_STR_W_LEN("packets_sent_command") },
	{ MYSQLND_STR_W_LEN("packets_received_ok") },
	{ MYSQLND_STR_W_LEN("packets_received_eof") },
	{ MYSQLND_STR_W_LEN("packets_received_rset_header") },
	{ MYSQLND_STR_W_LEN("packets_received_rset_field_meta") },
	{ MYSQLND_STR_W_LEN("packets_received_rset_row") },
	{ MYSQLND_STR_W_LEN("packets_received_prepare_response") },
	{ MYSQLND_STR_W_LEN("packets_received_change_user") },
	{ MYSQLND_STR_W_LEN("result_set_queries") },
	{ MYSQLND_STR_W_LEN("non_result_set_queries") },
	{ MYSQLND_STR_W_LEN("no_index_used") },
	{ MYSQLND_STR_W_LEN("bad_index_used") },
	{ MYSQLND_STR_W_LEN("slow_queries") },
	{ MYSQLND_STR_W_LEN("buffered_sets") },
	{ MYSQLND_STR_W_LEN("unbuffered_sets") },
	{ MYSQLND_STR_W_LEN("ps_buffered_sets") },
	{ MYSQLND_STR_W_LEN("ps_unbuffered_sets") },
	{ MYSQLND_STR_W_LEN("flushed_normal_sets") },
	{ MYSQLND_STR_W_LEN("flushed_ps_sets") },
	{ MYSQLND_STR_W_LEN("ps_prepared_never_executed") },
	{ MYSQLND_STR_W_LEN("ps_prepared_once_executed") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_server_normal") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_server_ps") },
	{ MYSQLND_STR_W_LEN("rows_buffered_from_client_normal") },
	{ MYSQLND_STR_W_LEN("rows_buffered_from_client_ps") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_client_normal_buffered") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_client_normal_unbuffered") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_client_ps_buffered") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_client_ps_unbuffered") },
	{ MYSQLND_STR_W_LEN("rows_fetched_from_client_ps_cursor") },
	{ MYSQLND_STR_W_LEN("rows_affected_normal") },
	{ MYSQLND_STR_W_LEN("rows_affected_ps") },
	{ MYSQLND_STR_W_LEN("rows_skipped_normal") },
	{ MYSQLND_STR_W_LEN("rows_skipped_ps") },
	{ MYSQLND_STR_W_LEN("copy_on_write_saved") },
	{ MYSQLND_STR_W_LEN("copy_on_write_performed") },
	{ MYSQLND_STR_W_LEN("command_buffer_too_small") },
	{ MYSQLND_STR_W_LEN("connect_success") },
	{ MYSQLND_STR_W_LEN("connect_failure") },
	{ MYSQLND_STR_W_LEN("connection_reused") },
	{ MYSQLND_STR_W_LEN("reconnect") },
	{ MYSQLND_STR_W_LEN("pconnect_success") },
	{ MYSQLND_STR_W_LEN("active_connections") },
	{ MYSQLND_STR_W_LEN("active_persistent_connections") },
	{ MYSQLND_STR_W_LEN("explicit_close") },
	{ MYSQLND_STR_W_LEN("implicit_close") },
	{ MYSQLND_STR_W_LEN("disconnect_close") },
	{ MYSQLND_STR_W_LEN("in_middle_of_command_close") },
	{ MYSQLND_STR_W_LEN("explicit_free_result") },
	{ MYSQLND_STR_W_LEN("implicit_free_result") },
	{ MYSQLND_STR_W_LEN("explicit_stmt_close") },
	{ MYSQLND_STR_W_LEN("implicit_stmt_close") },
	{ MYSQLND_STR_W_LEN("mem_emalloc_count") },
	{ MYSQLND_STR_W_LEN("mem_emalloc_amount") },
	{ MYSQLND_STR_W_LEN("mem_ecalloc_count") },
	{ MYSQLND_STR_W_LEN("mem_ecalloc_amount") },
	{ MYSQLND_STR_W_LEN("mem_erealloc_count") },
	{ MYSQLND_STR_W_LEN("mem_erealloc_amount") },
	{ MYSQLND_STR_W_LEN("mem_efree_count") },
	{ MYSQLND_STR_W_LEN("mem_efree_amount") },
	{ MYSQLND_STR_W_LEN("mem_malloc_count") },
	{ MYSQLND_STR_W_LEN("mem_malloc_amount") },
	{ MYSQLND_STR_W_LEN("mem_calloc_count") },
	{ MYSQLND_STR_W_LEN("mem_calloc_amount") },
	{ MYSQLND_STR_W_LEN("mem_realloc_count") },
	{ MYSQLND_STR_W_LEN("mem_realloc_amount") },
	{ MYSQLND_STR_W_LEN("mem_free_count") },
	{ MYSQLND_STR_W_LEN("mem_free_amount") },
	{ MYSQLND_STR_W_LEN("mem_estrndup_count") },
	{ MYSQLND_STR_W_LEN("mem_strndup_count") },
	{ MYSQLND_STR_W_LEN("mem_estrdup_count") },
	{ MYSQLND_STR_W_LEN("mem_strdup_count") },
	{ MYSQLND_STR_W_LEN("mem_edupl_count") },
	{ MYSQLND_STR_W_LEN("mem_dupl_count") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_null") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_bit") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_tinyint") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_short") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_int24") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_int") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_bigint") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_decimal") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_float") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_double") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_date") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_year") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_time") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_datetime") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_timestamp") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_string") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_blob") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_enum") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_set") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_geometry") },
	{ MYSQLND_STR_W_LEN("proto_text_fetched_other") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_null") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_bit") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_tinyint") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_short") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_int24") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_int") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_bigint") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_decimal") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_float") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_double") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_date") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_year") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_time") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_datetime") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_timestamp") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_string") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_json") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_blob") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_enum") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_set") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_geometry") },
	{ MYSQLND_STR_W_LEN("proto_binary_fetched_other") },
	{ MYSQLND_STR_W_LEN("init_command_executed_count") },
	{ MYSQLND_STR_W_LEN("init_command_failed_count") },
	{ MYSQLND_STR_W_LEN("com_quit") },
	{ MYSQLND_STR_W_LEN("com_init_db") },
	{ MYSQLND_STR_W_LEN("com_query") },
	{ MYSQLND_STR_W_LEN("com_field_list") },
	{ MYSQLND_STR_W_LEN("com_create_db") },
	{ MYSQLND_STR_W_LEN("com_drop_db") },
	{ MYSQLND_STR_W_LEN("com_refresh") },
	{ MYSQLND_STR_W_LEN("com_shutdown") },
	{ MYSQLND_STR_W_LEN("com_statistics") },
	{ MYSQLND_STR_W_LEN("com_process_info") },
	{ MYSQLND_STR_W_LEN("com_connect") },
	{ MYSQLND_STR_W_LEN("com_process_kill") },
	{ MYSQLND_STR_W_LEN("com_debug") },
	{ MYSQLND_STR_W_LEN("com_ping") },
	{ MYSQLND_STR_W_LEN("com_time") },
	{ MYSQLND_STR_W_LEN("com_delayed_insert") },
	{ MYSQLND_STR_W_LEN("com_change_user") },
	{ MYSQLND_STR_W_LEN("com_binlog_dump") },
	{ MYSQLND_STR_W_LEN("com_table_dump") },
	{ MYSQLND_STR_W_LEN("com_connect_out") },
	{ MYSQLND_STR_W_LEN("com_register_slave") },
	{ MYSQLND_STR_W_LEN("com_stmt_prepare") },
	{ MYSQLND_STR_W_LEN("com_stmt_execute") },
	{ MYSQLND_STR_W_LEN("com_stmt_send_long_data") },
	{ MYSQLND_STR_W_LEN("com_stmt_close") },
	{ MYSQLND_STR_W_LEN("com_stmt_reset") },
	{ MYSQLND_STR_W_LEN("com_stmt_set_option") },
	{ MYSQLND_STR_W_LEN("com_stmt_fetch") },
	{ MYSQLND_STR_W_LEN("com_deamon") },
	{ MYSQLND_STR_W_LEN("bytes_received_real_data_normal") },
	{ MYSQLND_STR_W_LEN("bytes_received_real_data_ps") }
};
/* }}} */


/* {{{ mysqlnd_fill_stats_hash */
PHPAPI void
mysqlnd_fill_stats_hash(const MYSQLND_STATS * const stats, const MYSQLND_STRING * names, zval *return_value ZEND_FILE_LINE_DC)
{
	unsigned int i;

	array_init_size(return_value, stats->count);
	for (i = 0; i < stats->count; i++) {
		char tmp[25];

		snprintf(tmp, sizeof(tmp), "%" PRIu64, stats->values[i]);
		add_assoc_string_ex(return_value, names[i].s, names[i].l, tmp);
	}
}
/* }}} */


/* {{{ mysqlnd_stats_init */
PHPAPI void
mysqlnd_stats_init(MYSQLND_STATS ** stats, const size_t statistic_count, const bool persistent)
{
	size_t size = zend_safe_address_guarded(statistic_count, sizeof(*(*stats)->values), sizeof(**stats));
	*stats = pecalloc(1, size, persistent);
	(*stats)->count = statistic_count;
#ifdef ZTS
	(*stats)->LOCK_access = tsrm_mutex_alloc();
#endif
}
/* }}} */


/* {{{ mysqlnd_stats_end */
PHPAPI void
mysqlnd_stats_end(MYSQLND_STATS * stats, const bool persistent)
{
#ifdef ZTS
	tsrm_mutex_free(stats->LOCK_access);
#endif
	/* mnd_free will reference LOCK_access and crash...*/
	pefree(stats, persistent);
}
/* }}} */


/************ MYSQLND specific code **********/

/* {{{ _mysqlnd_get_client_stats */
PHPAPI void
_mysqlnd_get_client_stats(MYSQLND_STATS * stats_ptr, zval *return_value ZEND_FILE_LINE_DC)
{
	MYSQLND_STATS stats;
	DBG_ENTER("_mysqlnd_get_client_stats");
	if (!stats_ptr) {
		memset(&stats, 0, sizeof(stats));
		stats_ptr = &stats;
	}
	mysqlnd_fill_stats_hash(stats_ptr, mysqlnd_stats_values_names, return_value ZEND_FILE_LINE_CC);
	DBG_VOID_RETURN;
}
/* }}} */
