/*
      Copyright (c) 2013, 2023, Oracle and/or its affiliates.

      This program is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License, version 2.0,
      as published by the Free Software Foundation.

      This program is also distributed with certain software (including
      but not limited to OpenSSL) that is licensed under separate terms,
      as designated in a particular file or component or in included license
      documentation.  The authors of MySQL hereby grant you an additional
      permission to link the program and your derivative works with the
      separately licensed software that they have included with MySQL.

      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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301  USA */

/**
  @file storage/perfschema/table_replication_connection_configuration.cc
  Table replication_connection_configuration (implementation).
*/

#define HAVE_REPLICATION

#include "my_global.h"
#include "table_replication_connection_configuration.h"
#include "pfs_instr_class.h"
#include "pfs_instr.h"
#include "rpl_slave.h"
#include "rpl_info.h"
#include "rpl_rli.h"
#include "rpl_mi.h"
#include "sql_parse.h"
#include "rpl_msr.h"             /* Multisource replciation */

THR_LOCK table_replication_connection_configuration::m_table_lock;

/* Numbers in varchar count utf8 characters. */
static const TABLE_FIELD_TYPE field_types[]=
{
  {
    {C_STRING_WITH_LEN("CHANNEL_NAME")},
    {C_STRING_WITH_LEN("char(64)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("HOST")},
    {C_STRING_WITH_LEN("char(60)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("PORT")},
    {C_STRING_WITH_LEN("int(11)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("USER")},
    {C_STRING_WITH_LEN("char(" USERNAME_CHAR_LENGTH_STR ")")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("NETWORK_INTERFACE")},
    {C_STRING_WITH_LEN("char(60)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("AUTO_POSITION")},
    {C_STRING_WITH_LEN("enum('1','0')")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_ALLOWED")},
    {C_STRING_WITH_LEN("enum('YES','NO','IGNORED')")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_CA_FILE")},
    {C_STRING_WITH_LEN("varchar(512)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_CA_PATH")},
    {C_STRING_WITH_LEN("varchar(512)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_CERTIFICATE")},
    {C_STRING_WITH_LEN("varchar(512)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_CIPHER")},
    {C_STRING_WITH_LEN("varchar(512)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_KEY")},
    {C_STRING_WITH_LEN("varchar(512)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_VERIFY_SERVER_CERTIFICATE")},
    {C_STRING_WITH_LEN("enum('YES','NO')")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_CRL_FILE")},
    {C_STRING_WITH_LEN("varchar(255)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("SSL_CRL_PATH")},
    {C_STRING_WITH_LEN("varchar(255)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("CONNECTION_RETRY_INTERVAL")},
    {C_STRING_WITH_LEN("int(11)")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("CONNECTION_RETRY_COUNT")},
    {C_STRING_WITH_LEN("bigint")},
    {NULL, 0}
  },
  {
    {C_STRING_WITH_LEN("HEARTBEAT_INTERVAL")},
    {C_STRING_WITH_LEN("double(10,3)")},
    {NULL, 0}
   },
  {
    {C_STRING_WITH_LEN("TLS_VERSION")},
    {C_STRING_WITH_LEN("varchar(255)")},
    {NULL, 0}
  }
};

TABLE_FIELD_DEF
table_replication_connection_configuration::m_field_def=
{ 19, field_types };

PFS_engine_table_share_state
table_replication_connection_configuration::m_share_state = {
  false /* m_checked */
};

PFS_engine_table_share
table_replication_connection_configuration::m_share=
{
  { C_STRING_WITH_LEN("replication_connection_configuration") },
  &pfs_readonly_acl,
  table_replication_connection_configuration::create,
  NULL, /* write_row */
  NULL, /* delete_all_rows */
  table_replication_connection_configuration::get_row_count, /* records */
  sizeof(pos_t), /* ref length */
  &m_table_lock,
  &m_field_def,
  false, /* m_perpetual */
  false, /* m_optional */
  &m_share_state
};


PFS_engine_table* table_replication_connection_configuration::create(void)
{
  return new table_replication_connection_configuration();
}

table_replication_connection_configuration
  ::table_replication_connection_configuration()
  : PFS_engine_table(&m_share, &m_pos),
    m_row_exists(false), m_pos(0), m_next_pos(0)
{}

table_replication_connection_configuration
  ::~table_replication_connection_configuration()
{}

void table_replication_connection_configuration::reset_position(void)
{
  m_pos.m_index= 0;
  m_next_pos.m_index= 0;
}

ha_rows table_replication_connection_configuration::get_row_count()
{
  /*
     We actually give the MAX_CHANNELS rather than the current
     number of channels
  */

 return channel_map.get_max_channels();
}

int table_replication_connection_configuration::rnd_next(void)
{
  Master_info *mi;
  channel_map.rdlock();

  for (m_pos.set_at(&m_next_pos);
       m_pos.m_index < channel_map.get_max_channels();
       m_pos.next())
  {
    mi= channel_map.get_mi_at_pos(m_pos.m_index);

    if (mi && mi->host[0])
    {
      make_row(mi);
      m_next_pos.set_after(&m_pos);
      channel_map.unlock();
      return 0;
    }
  }

  channel_map.unlock();
  return HA_ERR_END_OF_FILE;
}

int table_replication_connection_configuration::rnd_pos(const void *pos)
{
  Master_info *mi;
  int res= HA_ERR_RECORD_DELETED;

  channel_map.rdlock();

  set_position(pos);

  if ((mi= channel_map.get_mi_at_pos(m_pos.m_index)))
  {
    make_row(mi);
    res= 0;
  }

  channel_map.unlock();
  return res;
}

void table_replication_connection_configuration::make_row(Master_info *mi)
{
  char * temp_store;

  m_row_exists= false;


  assert(mi != NULL);

  mysql_mutex_lock(&mi->data_lock);
  mysql_mutex_lock(&mi->rli->data_lock);

  m_row.channel_name_length= strlen(mi->get_channel());
  memcpy(m_row.channel_name, (char*)mi->get_channel(), m_row.channel_name_length);

  m_row.host_length= strlen(mi->host);
  memcpy(m_row.host, mi->host, m_row.host_length);

  m_row.port= (unsigned int) mi->port;

  /* can't the user be NULL? */
  temp_store= (char*)mi->get_user();
  m_row.user_length= strlen(temp_store);
  memcpy(m_row.user, temp_store, m_row.user_length);

  temp_store= (char*)mi->bind_addr;
  m_row.network_interface_length= strlen(temp_store);
  memcpy(m_row.network_interface, temp_store, m_row.network_interface_length);

  if (mi->is_auto_position())
    m_row.auto_position= PS_RPL_YES;
  else
    m_row.auto_position= PS_RPL_NO;

#ifdef HAVE_OPENSSL
  m_row.ssl_allowed= mi->ssl? PS_SSL_ALLOWED_YES:PS_SSL_ALLOWED_NO;
#else
  m_row.ssl_allowed= mi->ssl? PS_SSL_ALLOWED_IGNORED:PS_SSL_ALLOWED_NO;
#endif

  temp_store= (char*)mi->ssl_ca;
  m_row.ssl_ca_file_length= strlen(temp_store);
  memcpy(m_row.ssl_ca_file, temp_store, m_row.ssl_ca_file_length);

  temp_store= (char*)mi->ssl_capath;
  m_row.ssl_ca_path_length= strlen(temp_store);
  memcpy(m_row.ssl_ca_path, temp_store, m_row.ssl_ca_path_length);

  temp_store= (char*)mi->ssl_cert;
  m_row.ssl_certificate_length= strlen(temp_store);
  memcpy(m_row.ssl_certificate, temp_store, m_row.ssl_certificate_length);

  temp_store= (char*)mi->ssl_cipher;
  m_row.ssl_cipher_length= strlen(temp_store);
  memcpy(m_row.ssl_cipher, temp_store, m_row.ssl_cipher_length);

  temp_store= (char*)mi->ssl_key;
  m_row.ssl_key_length= strlen(temp_store);
  memcpy(m_row.ssl_key, temp_store, m_row.ssl_key_length);

  if (mi->ssl_verify_server_cert)
    m_row.ssl_verify_server_certificate= PS_RPL_YES;
  else
    m_row.ssl_verify_server_certificate= PS_RPL_NO;

  temp_store= (char*)mi->ssl_crl;
  m_row.ssl_crl_file_length= strlen(temp_store);
  memcpy(m_row.ssl_crl_file, temp_store, m_row.ssl_crl_file_length);

  temp_store= (char*)mi->ssl_crlpath;
  m_row.ssl_crl_path_length= strlen(temp_store);
  memcpy(m_row.ssl_crl_path, temp_store, m_row.ssl_crl_path_length);

  m_row.connection_retry_interval= (unsigned int) mi->connect_retry;

  m_row.connection_retry_count= (ulong) mi->retry_count;

  m_row.heartbeat_interval= (double)mi->heartbeat_period;

  temp_store= (char*)mi->tls_version;
  m_row.tls_version_length= strlen(temp_store);
  memcpy(m_row.tls_version, temp_store, m_row.tls_version_length);

  mysql_mutex_unlock(&mi->rli->data_lock);
  mysql_mutex_unlock(&mi->data_lock);

  m_row_exists= true;
}

int table_replication_connection_configuration::read_row_values(TABLE *table,
                                                                unsigned char *,
                                                                Field **fields,
                                                                bool read_all)
{
  Field *f;

  if (unlikely(! m_row_exists))
    return HA_ERR_RECORD_DELETED;

  assert(table->s->null_bytes == 0);

  for (; (f= *fields) ; fields++)
  {
    if (read_all || bitmap_is_set(table->read_set, f->field_index))
    {
      switch(f->field_index)
      {
      case 0: /** channel_name */
        set_field_char_utf8(f, m_row.channel_name, m_row.channel_name_length);
        break;
      case 1: /** host */
        set_field_char_utf8(f, m_row.host, m_row.host_length);
        break;
      case 2: /** port */
        set_field_ulong(f, m_row.port);
        break;
      case 3: /** user */
        set_field_char_utf8(f, m_row.user, m_row.user_length);
        break;
      case 4: /** network_interface */
        set_field_char_utf8(f, m_row.network_interface,
                               m_row.network_interface_length);
        break;
      case 5: /** auto_position */
        set_field_enum(f, m_row.auto_position);
        break;
      case 6: /** ssl_allowed */
        set_field_enum(f, m_row. ssl_allowed);
        break;
      case 7: /**ssl_ca_file */
        set_field_varchar_utf8(f, m_row.ssl_ca_file,
                               m_row.ssl_ca_file_length);
        break;
      case 8: /** ssl_ca_path */
        set_field_varchar_utf8(f, m_row.ssl_ca_path,
                               m_row.ssl_ca_path_length);
        break;
      case 9: /** ssl_certificate */
        set_field_varchar_utf8(f, m_row.ssl_certificate,
                               m_row.ssl_certificate_length);
        break;
      case 10: /** ssl_cipher */
        set_field_varchar_utf8(f, m_row.ssl_cipher, m_row.ssl_cipher_length);
        break;
      case 11: /** ssl_key */
        set_field_varchar_utf8(f, m_row.ssl_key, m_row.ssl_key_length);
        break;
      case 12: /** ssl_verify_server_certificate */
        set_field_enum(f, m_row.ssl_verify_server_certificate);
        break;
      case 13: /** ssl_crl_file */
        set_field_varchar_utf8(f, m_row.ssl_crl_file,
                               m_row.ssl_crl_file_length);
        break;
      case 14: /** ssl_crl_path */
        set_field_varchar_utf8(f, m_row.ssl_crl_path,
                               m_row.ssl_crl_path_length);
        break;
      case 15: /** connection_retry_interval */
        set_field_ulong(f, m_row.connection_retry_interval);
        break;
      case 16: /** connect_retry_count */
        set_field_ulonglong(f, m_row.connection_retry_count);
        break;
      case 17:/** number of seconds after which heartbeat will be sent */
        set_field_double(f, m_row.heartbeat_interval);
        break;
      case 18: /** tls_version */
        set_field_varchar_utf8(f, m_row.tls_version,
                               m_row.tls_version_length);
        break;
      default:
        assert(false);
      }
    }
  }
  return 0;
}