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mariadb/libmysqld/libmysqld.c
hf@deer.(none) 0e059dcb74 SCRUM: 
embedded library
I decided to get rid of #define mysql_some_function in mysql.h
It puzzles users and makes problems with dynamic libraries

Finally, there are only two functions left, that are covered with
the #define-s and it won't hurt performance at all
2003-09-18 18:28:42 +05:00

295 lines
8.2 KiB
C
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/* Copyright (C) 2000 MySQL AB
This program 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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "embedded_priv.h"
#include <my_sys.h>
#include <mysys_err.h>
#include <m_string.h>
#include <m_ctype.h>
#include "errmsg.h"
#include <violite.h>
#include <sys/stat.h>
#include <signal.h>
#include <time.h>
#include "client_settings.h"
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#if !defined(MSDOS) && !defined(__WIN__)
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#ifdef HAVE_SELECT_H
# include <select.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#endif
#ifdef HAVE_SYS_UN_H
# include <sys/un.h>
#endif
#ifndef INADDR_NONE
#define INADDR_NONE -1
#endif
#if defined(MSDOS) || defined(__WIN__)
#define ERRNO WSAGetLastError()
#define perror(A)
#else
#include <errno.h>
#define ERRNO errno
#define SOCKET_ERROR -1
#define closesocket(A) close(A)
#endif
#ifdef HAVE_GETPWUID
struct passwd *getpwuid(uid_t);
char* getlogin(void);
#endif
#ifdef __WIN__
static my_bool is_NT(void)
{
char *os=getenv("OS");
return (os && !strcmp(os, "Windows_NT")) ? 1 : 0;
}
#endif
/**************************************************************************
** Shut down connection
**************************************************************************/
static void end_server(MYSQL *mysql)
{
DBUG_ENTER("end_server");
free_old_query(mysql);
DBUG_VOID_RETURN;
}
/**************************************************************************
** Connect to sql server
** If host == 0 then use localhost
**************************************************************************/
MYSQL * STDCALL
mysql_connect(MYSQL *mysql,const char *host,
const char *user, const char *passwd)
{
MYSQL *res;
mysql=mysql_init(mysql); /* Make it thread safe */
{
DBUG_ENTER("mysql_connect");
if (!(res=mysql_real_connect(mysql,host,user,passwd,NullS,0,NullS,0)))
{
if (mysql->free_me)
my_free((gptr) mysql,MYF(0));
}
DBUG_RETURN(res);
}
}
static inline int mysql_init_charset(MYSQL *mysql)
{
char charset_name_buff[16], *charset_name;
if ((charset_name=mysql->options.charset_name))
{
const char *save=charsets_dir;
if (mysql->options.charset_dir)
charsets_dir=mysql->options.charset_dir;
mysql->charset=get_charset_by_name(mysql->options.charset_name,
MYF(MY_WME));
charsets_dir=save;
}
else if (mysql->server_language)
{
charset_name=charset_name_buff;
sprintf(charset_name,"%d",mysql->server_language); /* In case of errors */
mysql->charset=get_charset((uint8) mysql->server_language, MYF(MY_WME));
}
else
mysql->charset=default_charset_info;
if (!mysql->charset)
{
mysql->net.last_errno=CR_CANT_READ_CHARSET;
strmov(mysql->net.sqlstate, "HY0000");
if (mysql->options.charset_dir)
sprintf(mysql->net.last_error,ER(mysql->net.last_errno),
charset_name ? charset_name : "unknown",
mysql->options.charset_dir);
else
{
char cs_dir_name[FN_REFLEN];
get_charsets_dir(cs_dir_name);
sprintf(mysql->net.last_error,ER(mysql->net.last_errno),
charset_name ? charset_name : "unknown",
cs_dir_name);
}
return mysql->net.last_errno;
}
return 0;
}
MYSQL * STDCALL
mysql_real_connect(MYSQL *mysql,const char *host, const char *user,
const char *passwd, const char *db,
uint port, const char *unix_socket,ulong client_flag)
{
char *db_name;
DBUG_ENTER("mysql_real_connect");
DBUG_PRINT("enter",("host: %s db: %s user: %s",
host ? host : "(Null)",
db ? db : "(Null)",
user ? user : "(Null)"));
#if defined(EMBEDDED_LIBRARY) || !defined(DBUG_OFF)
if (!server_inited)
{
mysql->net.last_errno=CR_MYSQL_SERVER_INIT_MISSED;
strmov(mysql->net.last_error,ER(mysql->net.last_errno));
goto error;
}
#endif
if (mysql->options.methods_to_use == MYSQL_OPT_USE_REMOTE_CONNECTION ||
(mysql->options.methods_to_use == MYSQL_OPT_GUESS_CONNECTION &&
host && strcmp(host,LOCAL_HOST)))
cli_mysql_real_connect(mysql, host, user,
passwd, db, port, unix_socket, client_flag);
mysql->methods= &embedded_methods;
/* use default options */
if (mysql->options.my_cnf_file || mysql->options.my_cnf_group)
{
mysql_read_default_options(&mysql->options,
(mysql->options.my_cnf_file ?
mysql->options.my_cnf_file : "my"),
mysql->options.my_cnf_group);
my_free(mysql->options.my_cnf_file,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.my_cnf_group,MYF(MY_ALLOW_ZERO_PTR));
mysql->options.my_cnf_file=mysql->options.my_cnf_group=0;
}
if (!db || !db[0])
db=mysql->options.db;
port=0;
unix_socket=0;
db_name = db ? my_strdup(db,MYF(MY_WME)) : NULL;
mysql->thd= create_embedded_thd(client_flag, db_name);
init_embedded_mysql(mysql, client_flag, db_name);
if (mysql_init_charset(mysql))
goto error;
/* Send client information for access check */
client_flag|=CLIENT_CAPABILITIES;
client_flag&= ~CLIENT_COMPRESS;
if (db)
client_flag|=CLIENT_CONNECT_WITH_DB;
mysql->server_status= SERVER_STATUS_AUTOCOMMIT;
if (mysql->options.init_commands)
{
DYNAMIC_ARRAY *init_commands= mysql->options.init_commands;
char **ptr= (char**)init_commands->buffer;
char **end= ptr + init_commands->elements;
for (; ptr<end; ptr++)
{
MYSQL_RES *res;
if (mysql_query(mysql,*ptr))
goto error;
if (mysql->fields)
{
if (!(res= (*mysql->methods->use_result)(mysql)))
goto error;
mysql_free_result(res);
}
}
}
DBUG_PRINT("exit",("Mysql handler: %lx",mysql));
DBUG_RETURN(mysql);
error:
DBUG_PRINT("error",("message: %u (%s)", mysql->net.last_errno,
mysql->net.last_error));
{
/* Free alloced memory */
my_bool free_me=mysql->free_me;
end_server(mysql);
mysql->free_me=0;
mysql_close(mysql);
mysql->free_me=free_me;
}
DBUG_RETURN(0);
}
/*************************************************************************
** Send a QUIT to the server and close the connection
** If handle is alloced by mysql connect free it.
*************************************************************************/
void STDCALL mysql_close(MYSQL *mysql)
{
DBUG_ENTER("mysql_close");
if (mysql) /* Some simple safety */
{
if (mysql->methods != &embedded_methods)
{
cli_mysql_close(mysql);
DBUG_VOID_RETURN;
}
my_free(mysql->options.user,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.host,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.password,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.unix_socket,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.db,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.my_cnf_file,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.my_cnf_group,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.charset_dir,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.charset_name,MYF(MY_ALLOW_ZERO_PTR));
if (mysql->options.init_commands)
{
DYNAMIC_ARRAY *init_commands= mysql->options.init_commands;
char **ptr= (char**)init_commands->buffer;
char **end= ptr + init_commands->elements;
for (; ptr<end; ptr++)
my_free(*ptr,MYF(MY_WME));
delete_dynamic(init_commands);
my_free((char*)init_commands,MYF(MY_WME));
}
/* Clear pointers for better safety */
bzero((char*) &mysql->options,sizeof(mysql->options));
#ifdef HAVE_OPENSSL
((VioConnectorFd*)(mysql->connector_fd))->delete();
mysql->connector_fd = 0;
#endif /* HAVE_OPENSSL */
if (mysql->free_me)
my_free((gptr) mysql,MYF(0));
}
DBUG_VOID_RETURN;
}
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