/*
This file is distributed as part of the SkySQL Gateway. It is free
software: you can redistribute it and/or modify it under the terms of the
GNU General Public License as published by the Free Software Foundation,
version 2.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Copyright SkySQL Ab

*/

////////////////////////////////////////
// SKYSQL mysql protocol header file
// By Massimiliano Pinto 2012/2013
////////////////////////////////////////

#include "ap_config.h"
#include "ap_mmn.h"
#include "httpd.h"
#include "http_core.h"
#include "http_main.h"
#include "http_config.h"
#include "http_connection.h"
#include "http_request.h"
#include "http_log.h"
#include "http_protocol.h"
#include "ap_config_auto.h"
#include "http_connection.h"

#include "util_filter.h"
#include "util_script.h"
#include "apr.h"
#include "apr_general.h"
#include "apr_buckets.h"
#include "apr_optional.h"
#include "apr_strings.h"
#include "apr_tables.h"
#include "apr_lib.h"
#include "apr_fnmatch.h"
#include "apr_strings.h"
#include "apr_dbm.h"
#include "apr_rmm.h"
#include "apr_shm.h"
#include "apr_global_mutex.h"
#include "apr_time.h"
#include "scoreboard.h"

// sha1
#include "apr_sha1.h"

// getpid
#include <unistd.h>


/* Protocol packing macros. */
#define skysql_set_byte2(__buffer, __int) do { \
  (__buffer)[0]= (uint8_t)((__int) & 0xFF); \
  (__buffer)[1]= (uint8_t)(((__int) >> 8) & 0xFF); } while (0)
#define skysql_set_byte3(__buffer, __int) do { \
  (__buffer)[0]= (uint8_t)((__int) & 0xFF); \
  (__buffer)[1]= (uint8_t)(((__int) >> 8) & 0xFF); \
  (__buffer)[2]= (uint8_t)(((__int) >> 16) & 0xFF); } while (0)
#define skysql_set_byte4(__buffer, __int) do { \
  (__buffer)[0]= (uint8_t)((__int) & 0xFF); \
  (__buffer)[1]= (uint8_t)(((__int) >> 8) & 0xFF); \
  (__buffer)[2]= (uint8_t)(((__int) >> 16) & 0xFF); \
  (__buffer)[3]= (uint8_t)(((__int) >> 24) & 0xFF); } while (0)


/* Protocol unpacking macros. */
#define skysql_get_byte2(__buffer) \
  (uint16_t)((__buffer)[0] | \
            ((__buffer)[1] << 8))
#define skysql_get_byte3(__buffer) \
  (uint32_t)((__buffer)[0] | \
            ((__buffer)[1] << 8) | \
            ((__buffer)[2] << 16))
#define skysql_get_byte4(__buffer) \
  (uint32_t)((__buffer)[0] | \
            ((__buffer)[1] << 8) | \
            ((__buffer)[2] << 16) | \
            ((__buffer)[3] << 24))
#define skysql_get_byte8(__buffer) \
  ((uint64_t)(__buffer)[0] | \
  ((uint64_t)(__buffer)[1] << 8) | \
  ((uint64_t)(__buffer)[2] << 16) | \
  ((uint64_t)(__buffer)[3] << 24) | \
  ((uint64_t)(__buffer)[4] << 32) | \
  ((uint64_t)(__buffer)[5] << 40) | \
  ((uint64_t)(__buffer)[6] << 48) | \
  ((uint64_t)(__buffer)[7] << 56))

typedef enum
{
  SKYSQL_CAPABILITIES_NONE=                   0,
  SKYSQL_CAPABILITIES_LONG_PASSWORD=          (1 << 0),
  SKYSQL_CAPABILITIES_FOUND_ROWS=             (1 << 1),
  SKYSQL_CAPABILITIES_LONG_FLAG=              (1 << 2),
  SKYSQL_CAPABILITIES_CONNECT_WITH_DB=        (1 << 3),
  SKYSQL_CAPABILITIES_NO_SCHEMA=              (1 << 4),
  SKYSQL_CAPABILITIES_COMPRESS=               (1 << 5),
  SKYSQL_CAPABILITIES_ODBC=                   (1 << 6),
  SKYSQL_CAPABILITIES_LOCAL_FILES=            (1 << 7),
  SKYSQL_CAPABILITIES_IGNORE_SPACE=           (1 << 8),
  SKYSQL_CAPABILITIES_PROTOCOL_41=            (1 << 9),
  SKYSQL_CAPABILITIES_INTERACTIVE=            (1 << 10),
  SKYSQL_CAPABILITIES_SSL=                    (1 << 11),
  SKYSQL_CAPABILITIES_IGNORE_SIGPIPE=         (1 << 12),
  SKYSQL_CAPABILITIES_TRANSACTIONS=           (1 << 13),
  SKYSQL_CAPABILITIES_RESERVED=               (1 << 14),
  SKYSQL_CAPABILITIES_SECURE_CONNECTION=      (1 << 15),
  SKYSQL_CAPABILITIES_MULTI_STATEMENTS=       (1 << 16),
  SKYSQL_CAPABILITIES_MULTI_RESULTS=          (1 << 17),
  SKYSQL_CAPABILITIES_PS_MULTI_RESULTS=       (1 << 18),
  SKYSQL_CAPABILITIES_PLUGIN_AUTH=            (1 << 19),
  SKYSQL_CAPABILITIES_SSL_VERIFY_SERVER_CERT= (1 << 30),
  SKYSQL_CAPABILITIES_REMEMBER_OPTIONS=       (1 << 31),
  SKYSQL_CAPABILITIES_CLIENT= (SKYSQL_CAPABILITIES_LONG_PASSWORD |
                                SKYSQL_CAPABILITIES_FOUND_ROWS |
                                SKYSQL_CAPABILITIES_LONG_FLAG |
                                SKYSQL_CAPABILITIES_CONNECT_WITH_DB |
                                SKYSQL_CAPABILITIES_LOCAL_FILES |
                                SKYSQL_CAPABILITIES_PLUGIN_AUTH |
                                SKYSQL_CAPABILITIES_TRANSACTIONS |
                                SKYSQL_CAPABILITIES_PROTOCOL_41 |
                                SKYSQL_CAPABILITIES_MULTI_STATEMENTS |
                                SKYSQL_CAPABILITIES_MULTI_RESULTS |
                                SKYSQL_CAPABILITIES_PS_MULTI_RESULTS |
                                SKYSQL_CAPABILITIES_SECURE_CONNECTION),
  SKYSQL_CAPABILITIES_CLIENT_COMPRESS= (SKYSQL_CAPABILITIES_LONG_PASSWORD |
                                SKYSQL_CAPABILITIES_FOUND_ROWS |
                                SKYSQL_CAPABILITIES_LONG_FLAG |
                                SKYSQL_CAPABILITIES_CONNECT_WITH_DB |
                                SKYSQL_CAPABILITIES_LOCAL_FILES |
                                SKYSQL_CAPABILITIES_PLUGIN_AUTH |
                                SKYSQL_CAPABILITIES_TRANSACTIONS |
                                SKYSQL_CAPABILITIES_PROTOCOL_41 |
                                SKYSQL_CAPABILITIES_MULTI_STATEMENTS |
                                SKYSQL_CAPABILITIES_MULTI_RESULTS |
                                SKYSQL_CAPABILITIES_PS_MULTI_RESULTS |
				SKYSQL_CAPABILITIES_COMPRESS
                                ),
} skysql_capabilities_t;


#define SMALL_CHUNK 1024
#define MAX_CHUNK SMALL_CHUNK * 8 * 4
#define ToHex(Y) (Y>='0'&&Y<='9'?Y-'0':Y-'A'+10)

#define MYSQL_CONN_DEBUG
#undef MYSQL_CONN_DEBUG

typedef struct {
        apr_socket_t *socket;
        char scramble[33];
        uint32_t server_capabs;
        uint32_t client_capabs;
	unsigned long tid;
	apr_pool_t *pool;
} MYSQL_conn;