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swoole_mysql_coro.cc
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swoole_mysql_coro.cc
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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| Copyright (c) 2012-2018 The Swoole Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Twosee <[email protected]> |
| Author: Tianfeng Han <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php_swoole_cxx.h"
#include "swoole_mysql_proto.h"
// see mysqlnd 'L64' macro redefined
#undef L64
extern "C" {
#include "ext/hash/php_hash.h"
#include "ext/hash/php_hash_sha.h"
#include "ext/standard/php_math.h"
#ifdef SW_USE_MYSQLND
#include "ext/mysqlnd/mysqlnd.h"
#include "ext/mysqlnd/mysqlnd_charset.h"
#endif
}
#include <unordered_map>
using namespace swoole;
using swoole::coroutine::Socket;
/* keep same with pdo and mysqli */
#define MYSQLND_UNKNOWN_SQLSTATE "HY000"
#define MYSQLND_SERVER_GONE "MySQL server has gone away"
#define MYSQLND_CR_UNKNOWN_ERROR 2000
#define MYSQLND_CR_CONNECTION_ERROR 2002
#define MYSQLND_CR_SERVER_GONE_ERROR 2006
#define MYSQLND_CR_OUT_OF_MEMORY 2008
#define MYSQLND_CR_SERVER_LOST 2013
#define MYSQLND_CR_COMMANDS_OUT_OF_SYNC 2014
#define MYSQLND_CR_CANT_FIND_CHARSET 2019
#define MYSQLND_CR_MALFORMED_PACKET 2027
#define MYSQLND_CR_NOT_IMPLEMENTED 2054
#define MYSQLND_CR_NO_PREPARE_STMT 2030
#define MYSQLND_CR_PARAMS_NOT_BOUND 2031
#define MYSQLND_CR_INVALID_PARAMETER_NO 2034
#define MYSQLND_CR_INVALID_BUFFER_USE 2035
namespace swoole
{
class mysql_statement;
class mysql_client
{
public:
/* session related {{{ */
Socket *socket = nullptr;
Socket::timeout_controller *tc = nullptr;
enum sw_mysql_state state = SW_MYSQL_STATE_CLOSED;
bool quit = false;
mysql::result_info result;
std::unordered_map<uint32_t, mysql_statement*> statements;
mysql_statement* statement = nullptr;
/* }}} */
std::string host = SW_MYSQL_DEFAULT_HOST;
uint16_t port = SW_MYSQL_DEFAULT_PORT;
bool ssl = false;
std::string user = "root";
std::string password = "root";
std::string database = "test";
char charset = SW_MYSQL_DEFAULT_CHARSET;
double connect_timeout = Socket::default_connect_timeout;
bool strict_type = false;
inline int get_error_code()
{
return error_code;
}
inline const char* get_error_msg()
{
return error_msg.c_str();
}
inline void non_sql_error(int code, const char *msg)
{
error_code = code;
error_msg = cpp_string::format("SQLSTATE[" MYSQLND_UNKNOWN_SQLSTATE "] [%d] %s", code, msg);
}
template<typename ...Args>
inline void non_sql_error(int code, const char *format, Args ...args)
{
error_code = code;
error_msg = cpp_string::format(
"SQLSTATE[" MYSQLND_UNKNOWN_SQLSTATE "] [%d] %s",
code, cpp_string::format(format, args...).c_str()
);
}
void io_error()
{
if (state == SW_MYSQL_STATE_CLOSED)
{
non_sql_error(MYSQLND_CR_CONNECTION_ERROR, socket->errMsg);
}
else
{
non_sql_error(MYSQLND_CR_SERVER_GONE_ERROR, MYSQLND_SERVER_GONE " due to %s", socket->errMsg);
}
close();
}
void proto_error(const char *data, const enum sw_mysql_packet_types expected_type)
{
mysql::server_packet packet(data);
non_sql_error(
MYSQLND_CR_MALFORMED_PACKET, "Unexpected mysql packet length=%u, number=%u, type=%u, expected_type=%u",
packet.header.length, packet.header.number, (uint8_t) data[SW_MYSQL_PACKET_HEADER_SIZE], expected_type
);
close();
}
void server_error(const char *data)
{
mysql::err_packet err_packet(data);
error_code = err_packet.code;
error_msg = cpp_string::format("SQLSTATE[%s] [%d] %s", err_packet.sql_state, err_packet.code, err_packet.msg.c_str());
state = SW_MYSQL_STATE_IDLE;
}
inline bool get_fetch_mode()
{
return fetch_mode;
}
inline bool set_fetch_mode(bool v)
{
if (unlikely(socket && v))
{
non_sql_error(ENOTSUP, "Can not use fetch mode after the connection is established");
return false;
}
fetch_mode = v;
return true;
}
inline bool get_defer()
{
return defer;
}
inline bool set_defer(bool v)
{
// if (unlikely(fetch_mode && v))
// {
// non_sql_error(ENOTSUP, "Can not use defer mode when fetch mode is on");
// return false;
// }
defer = v;
return true;
}
void add_timeout_controller(double timeout, const enum swTimeout_type type)
{
if (unlikely(!socket))
{
return;
}
// Notice: `timeout > 0` is wrong, maybe -1
if (timeout != 0)
{
SW_ASSERT(!tc);
tc = new Socket::timeout_controller(socket, timeout, type);
}
}
inline bool has_timedout(enum swTimeout_type type)
{
return tc && tc->has_timedout(type);
}
void del_timeout_controller()
{
if (tc)
{
delete tc;
tc = nullptr;
}
}
bool connect(std::string host, uint16_t port, bool ssl);
inline bool connect()
{
return connect(host, port, ssl);
}
inline bool is_connect()
{
return socket && socket->is_connect();
}
inline int get_fd()
{
return socket ? socket->get_fd() : -1;
}
inline bool check_connection()
{
if (unlikely(!is_connect()))
{
non_sql_error(MYSQLND_CR_CONNECTION_ERROR, "%s or %s", strerror(ECONNRESET), strerror(ENOTCONN));
return false;
}
return true;
}
inline bool check_liveness()
{
if (unlikely(!check_connection()))
{
return false;
}
if (unlikely(!socket->check_liveness()))
{
non_sql_error(MYSQLND_CR_SERVER_GONE_ERROR, MYSQLND_SERVER_GONE);
close();
return false;
}
return true;
}
inline bool is_writable()
{
return is_connect() && !socket->has_bound(SW_EVENT_WRITE);
}
bool is_available_for_new_reuqest()
{
if (unlikely(state != SW_MYSQL_STATE_IDLE && state != SW_MYSQL_STATE_CLOSED))
{
if (socket)
{
socket->check_bound_co(SW_EVENT_RDWR);
}
non_sql_error(
EINPROGRESS,
"MySQL client is busy now on state#%d, "
"please use recv/fetchAll/nextResult to get all unread data "
"and wait for response then try again",
state
);
return false;
}
if (unlikely(!check_liveness()))
{
return false;
}
else
{
/* without unread data */
swString *buffer = socket->get_read_buffer();
SW_ASSERT(buffer->length == (size_t) buffer->offset);
swString_clear(buffer);
return true;
}
}
const char* recv_packet();
inline const char* recv_none_error_packet()
{
const char *data = recv_packet();
if (unlikely(data && mysql::server_packet::is_err(data)))
{
server_error(data);
return nullptr;
}
return data;
}
inline const char* recv_eof_packet()
{
const char *data = recv_packet();
if (unlikely(data && !mysql::server_packet::is_eof(data)))
{
proto_error(data, SW_MYSQL_PACKET_EOF);
return nullptr;
}
#ifdef SW_LOG_TRACE_OPEN
mysql::eof_packet eof_packet(data);
#endif
return data;
}
inline bool send_raw(const char *data, size_t length)
{
if (unlikely(!check_connection()))
{
return false;
}
else
{
if (unlikely(has_timedout(SW_TIMEOUT_WRITE)))
{
io_error();
return false;
}
if (unlikely(socket->send_all(data, length) != (ssize_t ) length))
{
io_error();
return false;
}
return true;
}
}
bool send_packet(mysql::client_packet *packet);
bool send_command(enum sw_mysql_command command, const char* sql = nullptr, size_t length = 0);
void query(zval *return_value, const char *statement, size_t statement_length);
void send_query_request(zval *return_value, const char *statement, size_t statement_length);
void recv_query_response(zval *return_value);
const char* handle_row_data_size(mysql::row_data *row_data, uint8_t size);
bool handle_row_data_lcb(mysql::row_data *row_data);
void handle_row_data_text(zval *return_value, mysql::row_data *row_data, mysql::field_packet *field);
void handle_strict_type(zval *ztext, mysql::field_packet *field);
void fetch(zval *return_value);
void fetch_all(zval *return_value);
void next_result(zval *return_value);
bool recv();
bool send_prepare_request(const char *statement, size_t statement_length);
mysql_statement* recv_prepare_response();
void close();
/* we must destroy the client after all statements have been destroyed,
* unless we manually close the client {{{ */
inline bool get_deletable_and_sign()
{
waiting_for_deletion = true;
return statements.empty();
}
inline bool should_be_deleted_by_statement()
{
return waiting_for_deletion && statements.empty();
}
/* }}} */
~mysql_client()
{
SW_ASSERT(statements.empty());
close();
}
private:
int error_code = 0;
std::string error_msg = "";
/* unable to support both features at the same time, so we have to set them by method {{{ */
bool fetch_mode = false;
bool defer = false;
/* }}} */
bool waiting_for_deletion = false;
// recv data of specified length
const char* recv_length(size_t need_length, const bool try_to_recycle = false);
// usually mysql->connect = connect(TCP) + handshake
bool handshake();
};
class mysql_statement
{
public:
std::string statement;
mysql::statement info;
mysql::result_info result;
mysql_statement(mysql_client *client, const char *statement, size_t statement_length) :
client(client)
{
this->statement = std::string(statement, statement_length);
}
inline mysql_client* get_client()
{
return client;
}
inline int get_error_code()
{
return likely(client) ? client->get_error_code() : error_code;
}
inline const char* get_error_msg()
{
return likely(client) ? client->get_error_msg() : error_msg.c_str();
}
inline bool is_available()
{
if (unlikely(!client))
{
error_code = ECONNRESET;
error_msg = "statement must to be recompiled after the connection is broken";
return false;
}
return true;
}
inline bool is_available_for_new_reuqest()
{
if (unlikely(!is_available()))
{
return false;
}
if (unlikely(!client->is_available_for_new_reuqest()))
{
return false;
}
return true;
}
inline void add_timeout_controller(double timeout, const enum swTimeout_type type)
{
if (likely(client))
{
client->add_timeout_controller(timeout, type);
}
}
inline void del_timeout_controller()
{
if (likely(client))
{
client->del_timeout_controller();
}
}
// [notify = false]: mysql_client actively close
inline void close(const bool notify = true)
{
if (client)
{
// if client point exists, socket is always available
if (notify)
{
if (likely(client->is_writable()))
{
char id[4];
sw_mysql_int4store(id, info.id);
client->send_command(SW_MYSQL_COM_STMT_CLOSE, id, sizeof(id));
}
client->statements.erase(info.id);
if (client->should_be_deleted_by_statement())
{
delete client;
}
}
else
{
error_code = client->get_error_code();
error_msg = client->get_error_msg();
}
client = nullptr;
}
}
~mysql_statement()
{
close();
}
bool send_prepare_request();
bool recv_prepare_response();
void execute(zval *return_value, zval *params);
void send_execute_request(zval *return_value, zval *params);
void recv_execute_response(zval *return_value);
void fetch(zval *return_value);
void fetch_all(zval *return_value);
void next_result(zval *return_value);
private:
mysql_client *client = nullptr;
int error_code = 0;
std::string error_msg;
};
}
static zend_class_entry *swoole_mysql_coro_ce;
static zend_object_handlers swoole_mysql_coro_handlers;
static zend_class_entry *swoole_mysql_coro_exception_ce;
static zend_object_handlers swoole_mysql_coro_exception_handlers;
static zend_class_entry *swoole_mysql_coro_statement_ce;
static zend_object_handlers swoole_mysql_coro_statement_handlers;
typedef struct {
mysql_client *mc;
zend_object std;
} mysql_coro_t;
typedef struct {
mysql_statement *statement;
zend_object std;
} mysql_coro_statement_t;
static PHP_METHOD(swoole_mysql_coro, __construct);
static PHP_METHOD(swoole_mysql_coro, __destruct);
static PHP_METHOD(swoole_mysql_coro, connect);
static PHP_METHOD(swoole_mysql_coro, getDefer);
static PHP_METHOD(swoole_mysql_coro, setDefer);
static PHP_METHOD(swoole_mysql_coro, query);
static PHP_METHOD(swoole_mysql_coro, fetch);
static PHP_METHOD(swoole_mysql_coro, fetchAll);
static PHP_METHOD(swoole_mysql_coro, nextResult);
static PHP_METHOD(swoole_mysql_coro, prepare);
static PHP_METHOD(swoole_mysql_coro, recv);
static PHP_METHOD(swoole_mysql_coro, begin);
static PHP_METHOD(swoole_mysql_coro, commit);
static PHP_METHOD(swoole_mysql_coro, rollback);
#ifdef SW_USE_MYSQLND
static PHP_METHOD(swoole_mysql_coro, escape);
#endif
static PHP_METHOD(swoole_mysql_coro, close);
static PHP_METHOD(swoole_mysql_coro_statement, execute);
static PHP_METHOD(swoole_mysql_coro_statement, fetch);
static PHP_METHOD(swoole_mysql_coro_statement, fetchAll);
static PHP_METHOD(swoole_mysql_coro_statement, nextResult);
static PHP_METHOD(swoole_mysql_coro_statement, recv);
static PHP_METHOD(swoole_mysql_coro_statement, close);
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_void, 0, 0, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_optional_timeout, 0, 0, 0)
ZEND_ARG_INFO(0, timeout)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_connect, 0, 0, 0)
ZEND_ARG_ARRAY_INFO(0, server_config, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_query, 0, 0, 1)
ZEND_ARG_INFO(0, sql)
ZEND_ARG_INFO(0, timeout)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_prepare, 0, 0, 1)
ZEND_ARG_INFO(0, query)
ZEND_ARG_INFO(0, timeout)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_setDefer, 0, 0, 0)
ZEND_ARG_INFO(0, defer)
ZEND_END_ARG_INFO()
#ifdef SW_USE_MYSQLND
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_escape, 0, 0, 1)
ZEND_ARG_INFO(0, string)
ZEND_ARG_INFO(0, flags)
ZEND_END_ARG_INFO()
#endif
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_statement_execute, 0, 0, 0)
ZEND_ARG_INFO(0, params)
ZEND_ARG_INFO(0, timeout)
ZEND_END_ARG_INFO()
static const zend_function_entry swoole_mysql_coro_methods[] =
{
PHP_ME(swoole_mysql_coro, __construct, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, __destruct, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, getDefer, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, setDefer, arginfo_swoole_mysql_coro_setDefer, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, connect, arginfo_swoole_mysql_coro_connect, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, query, arginfo_swoole_mysql_coro_query, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, fetch, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, fetchAll, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, nextResult, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, prepare, arginfo_swoole_mysql_coro_prepare, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, recv, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, begin, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, commit, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro, rollback, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
#ifdef SW_USE_MYSQLND
PHP_ME(swoole_mysql_coro, escape, arginfo_swoole_mysql_coro_escape, ZEND_ACC_PUBLIC)
#endif
PHP_ME(swoole_mysql_coro, close, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_FE_END
};
static const zend_function_entry swoole_mysql_coro_statement_methods[] =
{
PHP_ME(swoole_mysql_coro_statement, execute, arginfo_swoole_mysql_coro_statement_execute, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro_statement, fetch, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro_statement, fetchAll, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro_statement, nextResult, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro_statement, recv, arginfo_swoole_optional_timeout, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql_coro_statement, close, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_FE_END
};
void swoole_sha256(const char *str, int len, unsigned char *digest)
{
PHP_SHA256_CTX context;
PHP_SHA256Init(&context);
PHP_SHA256Update(&context, (unsigned char *) str, len);
PHP_SHA256Final(digest, &context);
}
bool mysql_client::connect(std::string host, uint16_t port, bool ssl)
{
if (socket && (host != this->host || port != this->port || ssl != this->ssl))
{
close();
}
if (!socket)
{
if (host.compare(0, 6, "unix:/", 0, 6) == 0)
{
host = host.substr(sizeof("unix:") - 1);
host.erase(0, host.find_first_not_of('/') - 1);
socket = new Socket(SW_SOCK_UNIX_STREAM);
}
else if (host.find(':') != std::string::npos)
{
socket = new Socket(SW_SOCK_TCP6);
}
else
{
socket = new Socket(SW_SOCK_TCP);
}
if (unlikely(socket->socket == nullptr))
{
php_swoole_fatal_error(E_WARNING, "new Socket() failed. Error: %s [%d]", strerror(errno), errno);
non_sql_error(MYSQLND_CR_CONNECTION_ERROR, strerror(errno));
delete socket;
socket = nullptr;
return false;
}
#ifdef SW_USE_OPENSSL
socket->open_ssl = ssl;
#endif
socket->set_timeout(connect_timeout, SW_TIMEOUT_CONNECT);
add_timeout_controller(connect_timeout, SW_TIMEOUT_ALL);
if (!socket->connect(host, port))
{
io_error();
return false;
}
this->host = host;
this->port = port;
#ifdef SW_USE_OPENSSL
this->ssl = ssl;
#endif
if (!handshake())
{
close();
return false;
}
state = SW_MYSQL_STATE_IDLE;
quit = false;
del_timeout_controller();
}
return true;
}
const char* mysql_client::recv_length(size_t need_length, const bool try_to_recycle)
{
if (likely(check_connection()))
{
ssize_t retval;
swString *buffer = socket->get_read_buffer();
off_t offset = buffer->offset; // save offset instead of buffer point (due to realloc)
size_t read_n = buffer->length - buffer->offset; // readable bytes
if (try_to_recycle && read_n == 0)
{
swTraceLog(SW_TRACE_MYSQL_CLIENT, "mysql buffer will be recycled, length=%zu, offset=%jd", buffer->length, (intmax_t) offset);
swString_clear(buffer);
offset = 0;
}
while (read_n < need_length)
{
if (unlikely(has_timedout(SW_TIMEOUT_READ)))
{
io_error();
return nullptr;
}
if (unlikely(buffer->length == buffer->size))
{
/* offset + need_length = new size (min) */
if (unlikely(swString_extend(buffer, SW_MEM_ALIGNED_SIZE_EX(offset + need_length, SwooleG.pagesize)) != SW_OK))
{
non_sql_error(MYSQLND_CR_OUT_OF_MEMORY, strerror(ENOMEM));
return nullptr;
}
else
{
swTraceLog(SW_TRACE_MYSQL_CLIENT, "mysql buffer extend to %zu", buffer->size);
}
}
retval = socket->recv(buffer->str + buffer->length, buffer->size - buffer->length);
if (unlikely(retval <= 0))
{
io_error();
return nullptr;
}
read_n += retval;
buffer->length += retval;
}
buffer->offset += need_length;
return buffer->str + offset;
}
return nullptr;
}
const char* mysql_client::recv_packet()
{
const char *p;
uint32_t length;
p = recv_length(SW_MYSQL_PACKET_HEADER_SIZE, true);
if (unlikely(!p))
{
return nullptr;
}
length = mysql::packet::get_length(p);
swTraceLog(SW_TRACE_MYSQL_CLIENT, "recv packet length=%u, number=%u", length, mysql::packet::get_number(p));
p = recv_length(length);
if (unlikely(!p))
{
return nullptr;
}
/* Notice: why we do this? because buffer maybe reallocated when recv data */
return p - SW_MYSQL_PACKET_HEADER_SIZE;
}
bool mysql_client::send_packet(mysql::client_packet *packet)
{
const char *data = packet->get_data();
uint32_t length = SW_MYSQL_PACKET_HEADER_SIZE + packet->get_length();
if (likely(send_raw(data, length)))
{
return true;
}
return false;
}
bool mysql_client::send_command(enum sw_mysql_command command, const char* sql, size_t length)
{
if (likely(SW_MYSQL_PACKET_HEADER_SIZE + 1 + length <= SwooleG.pagesize))
{
mysql::command_packet command_packet(command, sql, length);
return send_raw(command_packet.get_data(), command_packet.get_data_length());
}
else
{
/* if the data is larger than page_size, copy memory to the kernel buffer multiple times is much faster */
size_t send_s = SW_MIN(length, SW_MYSQL_MAX_PACKET_BODY_SIZE - 1), send_n = send_s, number = 0;
mysql::command_packet command_packet(command);
command_packet.set_header(1 + send_s, number++);
if (unlikely(
!send_raw(command_packet.get_data(), SW_MYSQL_PACKET_HEADER_SIZE + 1)) ||
!send_raw(sql, send_s)
)
{
return false;
}
/* MySQL single packet size is 16M, we must subpackage */
while (send_n < length)
{
send_s = length - send_n;
send_s = SW_MIN(send_s, SW_MYSQL_MAX_PACKET_BODY_SIZE);
command_packet.set_header(send_s, number++);
if (unlikely(
!send_raw(command_packet.get_data(), SW_MYSQL_PACKET_HEADER_SIZE)) ||
!send_raw(sql + send_n, send_s)
)
{
return false;
}
send_n += send_s;
}
return true;
}
}
bool mysql_client::handshake()
{
const char *data;
// recv greeting pakcet
if (unlikely(!(data = recv_none_error_packet())))
{
return false;
}
mysql::greeting_packet greeting_packet(data);
// generate login packet
do {
mysql::login_packet login_packet(&greeting_packet, user, password, database, charset);
if (unlikely(!send_packet(&login_packet)))
{
return false;
}
} while (0);
// recv auth switch request packet, 4 possible packet types
switch (mysql::server_packet::parse_type(data = recv_packet()))
{
case SW_MYSQL_PACKET_AUTH_SWITCH_REQUEST:
{
mysql::auth_switch_request_packet request(data);
mysql::auth_switch_response_packet response(&request, password);
if (unlikely(!send_packet(&response)))
{
return false;
}
break;
}
case SW_MYSQL_PACKET_AUTH_SIGNATURE_REQUEST:
{
mysql::auth_signature_request_packet request(data);
if (unlikely(!request.is_vaild()))
{
goto _proto_error;
}
if (likely(!request.is_full_auth_required()))
{
break;
}
// no cache, need full auth with rsa key (openssl required)
#ifdef SW_MYSQL_RSA_SUPPORT
// tell the server we are prepared
do {
mysql::auth_signature_prepared_packet prepared(request.header.number + 1);
if (unlikely(!send_packet(&prepared)))
{
return false;
}
} while (0);
// recv rsa key and encode the password
do {
if (unlikely(!(data = recv_none_error_packet())))
{
return false;
}
mysql::raw_data_packet raw_data_packet(data);
mysql::auth_signature_response_packet response(&raw_data_packet, password, greeting_packet.auth_plugin_data);
if (unlikely(!send_packet(&response)))
{
return false;
}
} while (0);
break;
#else
error_code = EPROTONOSUPPORT;
error_msg = SW_MYSQL_NO_RSA_ERROR;
return false;
#endif
}
case SW_MYSQL_PACKET_OK:
{
#ifdef SW_LOG_TRACE_OPEN
mysql::ok_packet ok_packet(data);
#endif
return true;
}
case SW_MYSQL_PACKET_ERR:
server_error(data);
return false;
case SW_MYSQL_PACKET_NULL:
// io_error
return false;
default:
_proto_error:
proto_error(data, SW_MYSQL_PACKET_AUTH_SWITCH_REQUEST);
return false;
}
// maybe ok packet or err packet
if (unlikely(!(data = recv_none_error_packet())))
{
return false;
}
#ifdef SW_LOG_TRACE_OPEN
mysql::ok_packet ok_packet(data);
#endif
return true;
}
void mysql_client::query(zval *return_value, const char *statement, size_t statement_length)
{
send_query_request(return_value, statement, statement_length);
if (EXPECTED(!defer && Z_TYPE_P(return_value) == IS_TRUE))
{
recv_query_response(return_value);
}
}
void mysql_client::send_query_request(zval *return_value, const char *statement, size_t statement_length)
{
if (unlikely(!is_available_for_new_reuqest()))
{
RETURN_FALSE;
}
if (unlikely(!send_command(SW_MYSQL_COM_QUERY, statement, statement_length)))
{
RETURN_FALSE;
}
state = SW_MYSQL_STATE_QUERY;
RETURN_TRUE;
};
void mysql_client::recv_query_response(zval *return_value)
{
const char *data;
if (unlikely(!(data = recv_none_error_packet())))
{
RETURN_FALSE;
}
if (mysql::server_packet::is_ok(data))
{
mysql::ok_packet ok_packet(data);
result.ok = ok_packet;
state = ok_packet.server_status.more_results_exists() ? SW_MYSQL_STATE_QUERY_MORE_RESULTS : SW_MYSQL_STATE_IDLE;
RETURN_TRUE;
}
do {
mysql::lcb_packet lcb_packet(data);
if (unlikely(lcb_packet.length == 0))
{
// is it possible?
proto_error(data, SW_MYSQL_PACKET_FIELD);
RETURN_FALSE;
}
result.alloc_fields(lcb_packet.length);
for (uint32_t i = 0; i < lcb_packet.length; i++)
{
if (unlikely(!(data = recv_packet())))
{
RETURN_FALSE;
}
result.set_field(i, data);
}
} while (0);
// expect eof
if (unlikely(!(data = recv_eof_packet())))
{
RETURN_FALSE;
}
state = SW_MYSQL_STATE_QUERY_FETCH;
if (get_fetch_mode())
{
RETURN_TRUE;
}
fetch_all(return_value);
}
const char* mysql_client::handle_row_data_size(mysql::row_data *row_data, uint8_t size)
{
const char *p, *data;
SW_ASSERT(size < sizeof(row_data->stack_buffer));
if (unlikely(!(p = row_data->read(size))))
{
uint8_t received = row_data->recv(row_data->stack_buffer, size);
if (unlikely(!(data = recv_packet())))
{
return nullptr;
}
row_data->next_packet(data);
received += row_data->recv(row_data->stack_buffer + received, size - received);
if (unlikely(received != size))
{
proto_error(data, SW_MYSQL_PACKET_ROW_DATA);
return nullptr;
}
p = row_data->stack_buffer;
}
return p;
}