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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2010 Brian Aker
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <drizzled/gettext.h>
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/* Copyright (C) 2000-2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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Low level functions for storing data to be send to the MySQL client.
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The actual communction is handled by the net_xxx functions in net_serv.cc
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#include <drizzled/server_includes.h>
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#include <drizzled/error.h>
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#include <drizzled/query_id.h>
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#include <drizzled/sql_state.h>
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#include <libdrizzle/pack.h>
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#include <drizzled/protocol.h>
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#include <drizzled/session.h>
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#include "drizzled/internal/my_sys.h"
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#include "drizzled/internal/m_string.h"
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#include <boost/program_options.hpp>
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#include <drizzled/module/option_map.h>
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#include "drizzled/util/tokenize.h"
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#include "drizzle_protocol.h"
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namespace po= boost::program_options;
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using namespace drizzled;
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namespace drizzle_plugin
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namespace drizzle_protocol
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std::vector<std::string> ClientDrizzleProtocol::drizzle_admin_ip_addresses;
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static port_constraint port;
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static timeout_constraint connect_timeout;
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static timeout_constraint read_timeout;
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static timeout_constraint write_timeout;
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static retry_constraint retry_count;
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static buffer_constraint buffer_length;
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static const uint32_t DRIZZLE_TCP_PORT= 4427;
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ProtocolCounters *ListenDrizzleProtocol::drizzle_counters= new ProtocolCounters();
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ListenDrizzleProtocol::~ListenDrizzleProtocol()
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in_port_t ListenDrizzleProtocol::getPort(void) const
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void ClientDrizzleProtocol::drizzle_compose_ip_addresses(vector<string> options)
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for (vector<string>::iterator it= options.begin();
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tokenize(*it, drizzle_admin_ip_addresses, ",", true);
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bool ClientDrizzleProtocol::isAdminAllowed(void)
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if (std::find(drizzle_admin_ip_addresses.begin(), drizzle_admin_ip_addresses.end(), session->user()->address()) != drizzle_admin_ip_addresses.end())
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plugin::Client *ListenDrizzleProtocol::getClient(int fd)
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new_fd= acceptTcp(fd);
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return new ClientDrizzleProtocol(new_fd, getCounters());
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static int init(drizzled::module::Context &context)
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const module::option_map &vm= context.getOptions();
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ListenDrizzleProtocol *protocol=new ListenDrizzleProtocol("drizzle_protocol", vm["bind-address"].as<std::string>(), true);
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protocol->addCountersToTable();
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context.add(protocol);
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context.registerVariable(new sys_var_constrained_value_readonly<in_port_t>("port", port));
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context.registerVariable(new sys_var_constrained_value_readonly<uint32_t>("connect_timeout", connect_timeout));
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context.registerVariable(new sys_var_constrained_value_readonly<uint32_t>("read_timeout", read_timeout));
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context.registerVariable(new sys_var_constrained_value_readonly<uint32_t>("write_timeout", write_timeout));
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context.registerVariable(new sys_var_constrained_value_readonly<uint32_t>("retry_count", retry_count));
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context.registerVariable(new sys_var_constrained_value_readonly<uint32_t>("buffer_length", buffer_length));
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context.registerVariable(new sys_var_const_string_val("bind_address",
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vm["bind-address"].as<std::string>()));
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context.registerVariable(new sys_var_uint32_t_ptr("max-connections", &ListenDrizzleProtocol::drizzle_counters->max_connections));
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static void init_options(drizzled::module::option_context &context)
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po::value<port_constraint>(&port)->default_value(DRIZZLE_TCP_PORT),
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N_("Port number to use for connection or 0 for default to with Drizzle/MySQL protocol."));
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context("connect-timeout",
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po::value<timeout_constraint>(&connect_timeout)->default_value(10),
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N_("Connect Timeout."));
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context("read-timeout",
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po::value<timeout_constraint>(&read_timeout)->default_value(30),
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N_("Read Timeout."));
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context("write-timeout",
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po::value<timeout_constraint>(&write_timeout)->default_value(60),
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N_("Write Timeout."));
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context("retry-count",
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po::value<retry_constraint>(&retry_count)->default_value(10),
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context("buffer-length",
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po::value<buffer_constraint>(&buffer_length)->default_value(16384),
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N_("Buffer length."));
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context("bind-address",
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po::value<std::string>()->default_value(""),
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N_("Address to bind to."));
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context("max-connections",
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po::value<uint32_t>(&ListenDrizzleProtocol::drizzle_counters->max_connections)->default_value(1000),
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N_("Maximum simultaneous connections."));
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context("admin-ip-addresses",
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po::value<vector<string> >()->composing()->notifier(&ClientDrizzleProtocol::drizzle_compose_ip_addresses),
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N_("A restrictive IP address list for incoming admin connections."));
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} /* namespace drizzle_protocol */
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} /* namespace drizzle_plugin */
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DRIZZLE_PLUGIN(drizzle_plugin::drizzle_protocol::init, NULL, drizzle_plugin::drizzle_protocol::init_options);
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static const unsigned int PACKET_BUFFER_EXTRA_ALLOC= 1024;
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/* Declared non-static only because of the embedded library. */
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static void net_send_error_packet(Session *session, uint32_t sql_errno, const char *err);
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static void write_eof_packet(Session *session, NET *net,
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uint32_t server_status, uint32_t total_warn_count);
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bool Protocol::net_store_data(const unsigned char *from, size_t length)
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size_t packet_length= packet->length();
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The +9 comes from that strings of length longer than 16M require
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9 bytes to be stored (see net_store_length).
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if (packet_length+9+length > packet->alloced_length() &&
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packet->realloc(packet_length+9+length))
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unsigned char *to= net_store_length((unsigned char*) packet->ptr()+packet_length, length);
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memcpy(to,from,length);
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packet->length((size_t) (to+length-(unsigned char*) packet->ptr()));
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net_store_data() - extended version with character set conversion.
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It is optimized for short strings whose length after
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conversion is garanteed to be less than 251, which accupies
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exactly one byte to store length. It allows not to use
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the "convert" member as a temporary buffer, conversion
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is done directly to the "packet" member.
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The limit 251 is good enough to optimize send_fields()
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because column, table, database names fit into this limit.
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bool Protocol::net_store_data(const unsigned char *from, size_t length,
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const CHARSET_INFO * const from_cs,
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const CHARSET_INFO * const to_cs)
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uint32_t dummy_errors;
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/* Calculate maxumum possible result length */
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uint32_t conv_length= to_cs->mbmaxlen * length / from_cs->mbminlen;
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if (conv_length > 250)
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For strings with conv_length greater than 250 bytes
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we don't know how many bytes we will need to store length: one or two,
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because we don't know result length until conversion is done.
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For example, when converting from utf8 (mbmaxlen=3) to latin1,
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conv_length=300 means that the result length can vary between 100 to 300.
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length=100 needs one byte, length=300 needs to bytes.
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Thus conversion directly to "packet" is not worthy.
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Let's use "convert" as a temporary buffer.
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return (convert->copy((const char*) from, length, from_cs,
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to_cs, &dummy_errors) ||
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net_store_data((const unsigned char*) convert->ptr(), convert->length()));
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size_t packet_length= packet->length();
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size_t new_length= packet_length + conv_length + 1;
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if (new_length > packet->alloced_length() && packet->realloc(new_length))
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char *length_pos= (char*) packet->ptr() + packet_length;
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char *to= length_pos + 1;
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to+= copy_and_convert(to, conv_length, to_cs,
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(const char*) from, length, from_cs, &dummy_errors);
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net_store_length((unsigned char*) length_pos, to - length_pos - 1);
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packet->length((uint) (to - packet->ptr()));
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Send a error string to client.
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net_printf_error and net_send_error are low-level functions
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that shall be used only when a new connection is being
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established or at server startup.
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For SIGNAL/RESIGNAL and GET DIAGNOSTICS functionality it's
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critical that every error that can be intercepted is issued in one
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place only, my_message_sql.
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void net_send_error(Session *session, uint32_t sql_errno, const char *err)
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assert(err && err[0]);
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It's one case when we can push an error even though there
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is an OK or EOF already.
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session->main_da.can_overwrite_status= true;
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/* Abort multi-result sets */
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session->server_status&= ~SERVER_MORE_RESULTS_EXISTS;
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net_send_error_packet(session, sql_errno, err);
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session->main_da.can_overwrite_status= false;
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Return ok to the client.
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The ok packet has the following structure:
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- 0 : Marker (1 byte)
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- affected_rows : Stored in 1-9 bytes
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- id : Stored in 1-9 bytes
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- server_status : Copy of session->server_status; Can be used by client
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to check if we are inside an transaction.
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- warning_count : Stored in 2 bytes; New in 4.1 protocol
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- message : Stored as packed length (1-9 bytes) + message.
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Is not stored if no message.
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@param session Thread handler
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@param affected_rows Number of rows changed by statement
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@param id Auto_increment id for first row (if used)
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@param message Message to send to the client (Used by mysql_status)
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net_send_ok(Session *session,
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uint32_t server_status, uint32_t total_warn_count,
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ha_rows affected_rows, uint64_t id, const char *message)
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NET *net= &session->net;
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unsigned char buff[DRIZZLE_ERRMSG_SIZE+10],*pos;
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if (! net->vio) // hack for re-parsing queries
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buff[0]=0; // No fields
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pos=net_store_length(buff+1,affected_rows);
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pos=net_store_length(pos, id);
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int2store(pos, server_status);
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/* We can only return up to 65535 warnings in two bytes */
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uint32_t tmp= cmin(total_warn_count, (uint)65535);
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session->main_da.can_overwrite_status= true;
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if (message && message[0])
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pos= net_store_data(pos, (unsigned char*) message, strlen(message));
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my_net_write(net, buff, (size_t) (pos-buff));
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session->main_da.can_overwrite_status= false;
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Send eof (= end of result set) to the client.
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The eof packet has the following structure:
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- 254 (DRIZZLE_PROTOCOL_NO_MORE_DATA) : Marker (1 byte)
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- warning_count : Stored in 2 bytes; New in 4.1 protocol
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- status_flag : Stored in 2 bytes;
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For flags like SERVER_MORE_RESULTS_EXISTS.
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Note that the warning count will not be sent if 'no_flush' is set as
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we don't want to report the warning count until all data is sent to the
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@param session Thread handler
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@param no_flush Set to 1 if there will be more data to the client,
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like in send_fields().
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net_send_eof(Session *session, uint32_t server_status, uint32_t total_warn_count)
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NET *net= &session->net;
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/* Set to true if no active vio, to work well in case of --init-file */
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session->main_da.can_overwrite_status= true;
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write_eof_packet(session, net, server_status, total_warn_count);
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session->main_da.can_overwrite_status= false;
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Format EOF packet according to the current protocol and
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write it to the network output buffer.
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static void write_eof_packet(Session *session, NET *net,
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uint32_t server_status,
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uint32_t total_warn_count)
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unsigned char buff[5];
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Don't send warn count during SP execution, as the warn_list
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is cleared between substatements, and mysqltest gets confused
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uint32_t tmp= cmin(total_warn_count, (uint)65535);
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buff[0]= DRIZZLE_PROTOCOL_NO_MORE_DATA;
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int2store(buff+1, tmp);
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The following test should never be true, but it's better to do it
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because if 'is_fatal_error' is set the server is not going to execute
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other queries (see the if test in dispatch_command / COM_QUERY)
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if (session->is_fatal_error)
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server_status&= ~SERVER_MORE_RESULTS_EXISTS;
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int2store(buff + 3, server_status);
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my_net_write(net, buff, 5);
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void net_send_error_packet(Session *session, uint32_t sql_errno, const char *err)
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NET *net= &session->net;
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buff[]: sql_errno:2 + ('#':1 + SQLSTATE_LENGTH:5) + DRIZZLE_ERRMSG_SIZE:512
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unsigned char buff[2+1+SQLSTATE_LENGTH+DRIZZLE_ERRMSG_SIZE], *pos;
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int2store(buff,sql_errno);
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/* The first # is to make the protocol backward compatible */
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pos= (unsigned char*) strcpy((char*) buff+3, drizzle_errno_to_sqlstate(sql_errno));
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pos+= strlen(drizzle_errno_to_sqlstate(sql_errno));
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char *tmp= strncpy((char*)pos, err, DRIZZLE_ERRMSG_SIZE-1);
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tmp+= strlen((char*)pos);
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length= (uint32_t)(tmp-(char*)buff);
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net_write_command(net,(unsigned char) 255, (unsigned char*) "", 0, (unsigned char*) err, length);
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Faster net_store_length when we know that length is less than 65536.
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We keep a separate version for that range because it's widely used in
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uint32_t is used as agrument type because of MySQL type conventions:
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- uint32_t for 0..65536
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- ulong for 0..4294967296
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- uint64_t for bigger numbers.
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static unsigned char *net_store_length_fast(unsigned char *packet, uint32_t length)
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*packet=(unsigned char) length;
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int2store(packet,(uint32_t) length);
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Send the status of the current statement execution over network.
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@param session in fact, carries two parameters, NET for the transport and
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Diagnostics_area as the source of status information.
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In MySQL, there are two types of SQL statements: those that return
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a result set and those that return status information only.
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If a statement returns a result set, it consists of 3 parts:
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- result set meta-data
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- variable number of result set rows (can be 0)
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- followed and terminated by EOF or ERROR packet
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Once the client has seen the meta-data information, it always
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expects an EOF or ERROR to terminate the result set. If ERROR is
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received, the result set rows are normally discarded (this is up
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to the client implementation, libmysql at least does discard them).
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EOF, on the contrary, means "successfully evaluated the entire
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result set". Since we don't know how many rows belong to a result
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set until it's evaluated, EOF/ERROR is the indicator of the end
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of the row stream. Note, that we can not buffer result set rows
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on the server -- there may be an arbitrary number of rows. But
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we do buffer the last packet (EOF/ERROR) in the Diagnostics_area and
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delay sending it till the very end of execution (here), to be able to
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change EOF to an ERROR if commit failed or some other error occurred
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during the last cleanup steps taken after execution.
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A statement that does not return a result set doesn't send result
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set meta-data either. Instead it returns one of:
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Similarly to the EOF/ERROR of the previous statement type, OK/ERROR
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packet is "buffered" in the diagnostics area and sent to the client
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in the end of statement.
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@pre The diagnostics area is assigned or disabled. It can not be empty
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-- we assume that every SQL statement or COM_* command
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generates OK, ERROR, or EOF status.
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@post The status information is encoded to protocol format and sent to the
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@return We conventionally return void, since the only type of error
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that can happen here is a NET (transport) error, and that one
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will become visible when we attempt to read from the NET the
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Diagnostics_area::is_sent is set for debugging purposes only.
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void net_end_statement(Session *session)
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assert(! session->main_da.is_sent);
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/* Can not be true, but do not take chances in production. */
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if (session->main_da.is_sent)
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switch (session->main_da.status()) {
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case Diagnostics_area::DA_ERROR:
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/* The query failed, send error to log and abort bootstrap. */
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net_send_error(session,
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session->main_da.sql_errno(),
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session->main_da.message());
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case Diagnostics_area::DA_EOF:
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net_send_eof(session,
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session->main_da.server_status(),
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session->main_da.total_warn_count());
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case Diagnostics_area::DA_OK:
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session->main_da.server_status(),
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session->main_da.total_warn_count(),
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session->main_da.affected_rows(),
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session->main_da.last_insert_id(),
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session->main_da.message());
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case Diagnostics_area::DA_DISABLED:
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case Diagnostics_area::DA_EMPTY:
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net_send_ok(session, session->server_status, session->total_warn_count,
402
session->main_da.is_sent= true;
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/****************************************************************************
407
Functions used by the protocol functions (like net_send_ok) to store
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strings and numbers in the header result packet.
409
****************************************************************************/
411
/* The following will only be used for short strings < 65K */
413
unsigned char *net_store_data(unsigned char *to, const unsigned char *from, size_t length)
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to=net_store_length_fast(to,length);
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memcpy(to,from,length);
420
unsigned char *net_store_data(unsigned char *to,int32_t from)
423
uint32_t length=(uint) (int10_to_str(from,buff,10)-buff);
424
to=net_store_length_fast(to,length);
425
memcpy(to,buff,length);
429
unsigned char *net_store_data(unsigned char *to,int64_t from)
432
uint32_t length=(uint) (int64_t10_to_str(from,buff,10)-buff);
433
to=net_store_length_fast(to,length);
434
memcpy(to,buff,length);
439
/*****************************************************************************
440
Default Protocol functions
441
*****************************************************************************/
443
void Protocol::init(Session *session_arg)
446
packet= &session->packet;
447
convert= &session->convert_buffer;
451
Finish the result set with EOF packet, as is expected by the client,
452
if there is an error evaluating the next row and a continue handler
456
void Protocol::end_partial_result_set(Session *session)
458
net_send_eof(session, session->server_status, 0 /* no warnings, we're inside SP */);
462
bool Protocol::flush()
464
return net_flush(&session->net);
469
Send name and type of result to client.
471
Sum fields has table name empty and field_name.
473
@param Session Thread data object
474
@param list List of items to send to client
475
@param flag Bit mask with the following functions:
476
- 1 send number of rows
477
- 2 send default values
478
- 4 don't write eof packet
483
1 Error (Note that in this case the error is not sent to the
486
bool Protocol::send_fields(List<Item> *list, uint32_t flags)
488
List_iterator_fast<Item> it(*list);
490
unsigned char buff[80];
491
String tmp((char*) buff,sizeof(buff),&my_charset_bin);
492
Protocol_text prot(session);
493
String *local_packet= prot.storage_packet();
494
const CHARSET_INFO * const session_charset= session->variables.character_set_results;
496
if (flags & SEND_NUM_ROWS)
497
{ // Packet with number of elements
498
unsigned char *pos= net_store_length(buff, list->elements);
499
(void) my_net_write(&session->net, buff, (size_t) (pos-buff));
505
const CHARSET_INFO * const cs= system_charset_info;
507
item->make_field(&field);
509
prot.prepare_for_resend();
512
if (prot.store(STRING_WITH_LEN("def"), cs, session_charset) ||
513
prot.store(field.db_name, (uint) strlen(field.db_name),
514
cs, session_charset) ||
515
prot.store(field.table_name, (uint) strlen(field.table_name),
516
cs, session_charset) ||
517
prot.store(field.org_table_name, (uint) strlen(field.org_table_name),
518
cs, session_charset) ||
519
prot.store(field.col_name, (uint) strlen(field.col_name),
520
cs, session_charset) ||
521
prot.store(field.org_col_name, (uint) strlen(field.org_col_name),
522
cs, session_charset) ||
523
local_packet->realloc(local_packet->length()+12))
526
/* Store fixed length fields */
527
pos= (char*) local_packet->ptr()+local_packet->length();
528
*pos++= 12; // Length of packed fields
529
if (item->collation.collation == &my_charset_bin || session_charset == NULL)
532
int2store(pos, field.charsetnr);
533
int4store(pos+2, field.length);
537
/* With conversion */
538
uint32_t max_char_len;
539
int2store(pos, session_charset->number);
541
For TEXT/BLOB columns, field_length describes the maximum data
542
length in bytes. There is no limit to the number of characters
543
that a TEXT column can store, as long as the data fits into
544
the designated space.
545
For the rest of textual columns, field_length is evaluated as
546
char_count * mbmaxlen, where character count is taken from the
547
definition of the column. In other words, the maximum number
548
of characters here is limited by the column definition.
550
max_char_len= field.length / item->collation.collation->mbmaxlen;
551
int4store(pos+2, max_char_len * session_charset->mbmaxlen);
554
int2store(pos+7,field.flags);
555
pos[9]= (char) field.decimals;
556
pos[10]= 0; // For the future
557
pos[11]= 0; // For the future
560
local_packet->length((uint) (pos - local_packet->ptr()));
561
if (flags & SEND_DEFAULTS)
562
item->send(&prot, &tmp); // Send default value
564
break; /* purecov: inspected */
567
if (flags & SEND_EOF)
570
Mark the end of meta-data result set, and store session->server_status,
571
to show that there is no cursor.
572
Send no warning information, as it will be sent at statement end.
574
write_eof_packet(session, &session->net, session->server_status, session->total_warn_count);
576
return(prepare_for_send(list));
579
my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES),
580
MYF(0)); /* purecov: inspected */
581
return(1); /* purecov: inspected */
585
bool Protocol::write()
587
return(my_net_write(&session->net, (unsigned char*) packet->ptr(),
593
Send \\0 end terminated string.
595
@param from NULL or \\0 terminated string
598
In most cases one should use store(from, length) instead of this function
606
bool Protocol::store(const char *from, const CHARSET_INFO * const cs)
610
uint32_t length= strlen(from);
611
return store(from, length, cs);
616
Send a set of strings as one long string with ',' in between.
619
bool Protocol::store(I_List<i_string>* str_list)
622
String tmp(buf, sizeof(buf), &my_charset_bin);
624
I_List_iterator<i_string> it(*str_list);
633
if ((len= tmp.length()))
634
len--; // Remove last ','
635
return store((char*) tmp.ptr(), len, tmp.charset());
639
bool Protocol::store(String *str)
641
return store((char*) str->ptr(), str->length(), str->charset());
644
void Protocol::free()
650
/****************************************************************************
651
Functions to handle the simple (default) protocol where everything is
652
This protocol is the one that is used by default between the MySQL server
653
and client when you are not using prepared statements.
655
All data are sent as 'packed-string-length' followed by 'string-data'
656
****************************************************************************/
658
void Protocol_text::prepare_for_resend()
663
bool Protocol_text::store_null()
667
return packet->append(buff, sizeof(buff), PACKET_BUFFER_EXTRA_ALLOC);
672
Auxilary function to convert string to the given character set
673
and store in network buffer.
676
bool Protocol::store_string_aux(const char *from, size_t length,
677
const CHARSET_INFO * const fromcs,
678
const CHARSET_INFO * const tocs)
680
/* 'tocs' is set 0 when client issues SET character_set_results=NULL */
681
if (tocs && !my_charset_same(fromcs, tocs) &&
682
fromcs != &my_charset_bin &&
683
tocs != &my_charset_bin)
685
/* Store with conversion */
686
return net_store_data((unsigned char*) from, length, fromcs, tocs);
688
/* Store without conversion */
689
return net_store_data((unsigned char*) from, length);
693
bool Protocol_text::store(const char *from, size_t length,
694
const CHARSET_INFO * const fromcs,
695
const CHARSET_INFO * const tocs)
697
return store_string_aux(from, length, fromcs, tocs);
701
bool Protocol_text::store(const char *from, size_t length,
702
const CHARSET_INFO * const fromcs)
704
const CHARSET_INFO * const tocs= this->session->variables.character_set_results;
705
return store_string_aux(from, length, fromcs, tocs);
709
bool Protocol_text::store_tiny(int64_t from)
712
return net_store_data((unsigned char*) buff,
713
(size_t) (int10_to_str((int) from, buff, -10) - buff));
717
bool Protocol_text::store_short(int64_t from)
720
return net_store_data((unsigned char*) buff,
721
(size_t) (int10_to_str((int) from, buff, -10) -
726
bool Protocol_text::store_long(int64_t from)
729
return net_store_data((unsigned char*) buff,
730
(size_t) (int10_to_str((long int)from, buff,
731
(from <0)?-10:10)-buff));
735
bool Protocol_text::store_int64_t(int64_t from, bool unsigned_flag)
738
return net_store_data((unsigned char*) buff,
739
(size_t) (int64_t10_to_str(from,buff,
740
unsigned_flag ? 10 : -10)-
745
bool Protocol_text::store_decimal(const my_decimal *d)
747
char buff[DECIMAL_MAX_STR_LENGTH];
748
String str(buff, sizeof(buff), &my_charset_bin);
749
(void) my_decimal2string(E_DEC_FATAL_ERROR, d, 0, 0, 0, &str);
750
return net_store_data((unsigned char*) str.ptr(), str.length());
754
bool Protocol_text::store(float from, uint32_t decimals, String *buffer)
756
buffer->set_real((double) from, decimals, session->charset());
757
return net_store_data((unsigned char*) buffer->ptr(), buffer->length());
761
bool Protocol_text::store(double from, uint32_t decimals, String *buffer)
763
buffer->set_real(from, decimals, session->charset());
764
return net_store_data((unsigned char*) buffer->ptr(), buffer->length());
768
bool Protocol_text::store(Field *field)
770
if (field->is_null())
772
char buff[MAX_FIELD_WIDTH];
773
String str(buff,sizeof(buff), &my_charset_bin);
774
const CHARSET_INFO * const tocs= this->session->variables.character_set_results;
776
field->val_str(&str);
778
return store_string_aux(str.ptr(), str.length(), str.charset(), tocs);
784
Second_part format ("%06") needs to change when
785
we support 0-6 decimals for time.
788
bool Protocol_text::store(DRIZZLE_TIME *tm)
792
length= sprintf(buff, "%04d-%02d-%02d %02d:%02d:%02d",
800
length+= sprintf(buff+length, ".%06d",
801
(int)tm->second_part);
802
return net_store_data((unsigned char*) buff, length);
806
bool Protocol_text::store_date(DRIZZLE_TIME *tm)
808
char buff[MAX_DATE_STRING_REP_LENGTH];
809
size_t length= my_date_to_str(tm, buff);
810
return net_store_data((unsigned char*) buff, length);
816
Second_part format ("%06") needs to change when
817
we support 0-6 decimals for time.
820
bool Protocol_text::store_time(DRIZZLE_TIME *tm)
824
uint32_t day= (tm->year || tm->month) ? 0 : tm->day;
825
length= sprintf(buff, "%s%02ld:%02d:%02d",
827
(long) day*24L+(long) tm->hour,
831
length+= sprintf(buff+length, ".%06d", (int)tm->second_part);
832
return net_store_data((unsigned char*) buff, length);