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php-src/ext/mysql/libmysql/libmysql.c
Georg Richter 230f4ebb06 Security fix (merged from 3.23.54)
2002-12-11 08:28:41 +00:00

2605 lines
70 KiB
C
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/* Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
This file is public domain and comes with NO WARRANTY of any kind */
#include <global.h>
#if defined(__WIN__) || defined(_WIN32) || defined(_WIN64)
#include <winsock.h>
#include <odbcinst.h>
#endif
#include <my_sys.h>
#include <mysys_err.h>
#include <m_string.h>
#include <m_ctype.h>
#include "mysql.h"
#include "mysql_version.h"
#include "mysqld_error.h"
#include "errmsg.h"
#include <violite.h>
#include <sys/stat.h>
#include <signal.h>
#include <time.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
#if defined(THREAD) && !defined(__WIN__)
#include <my_pthread.h> /* because of signal() */
#endif
#ifndef INADDR_NONE
#define INADDR_NONE -1
#endif
static my_bool mysql_client_init=0;
uint mysql_port=0;
my_string mysql_unix_port=0;
#define CLIENT_CAPABILITIES (CLIENT_LONG_PASSWORD | CLIENT_LONG_FLAG | CLIENT_TRANSACTIONS)
#ifdef __WIN__
#define CONNECT_TIMEOUT 20
#else
#define CONNECT_TIMEOUT 0
#endif
#if defined(MSDOS) || defined(__WIN__)
/* socket_errno is defined in global.h for all platforms */
#define perror(A)
#else
#include <errno.h>
#define SOCKET_ERROR -1
#endif /* __WIN__ */
static void mysql_once_init(void);
static MYSQL_DATA *read_rows (MYSQL *mysql,MYSQL_FIELD *fields,
uint field_count);
static int read_one_row(MYSQL *mysql,uint fields,MYSQL_ROW row,
ulong *lengths);
static void end_server(MYSQL *mysql);
static void read_user_name(char *name);
static void append_wild(char *to,char *end,const char *wild);
static my_bool mysql_reconnect(MYSQL *mysql);
static int send_file_to_server(MYSQL *mysql,const char *filename);
static sig_handler pipe_sig_handler(int sig);
static ulong mysql_sub_escape_string(CHARSET_INFO *charset_info, char *to,
const char *from, ulong length);
/*
Let the user specify that we don't want SIGPIPE; This doesn't however work
with threaded applications as we can have multiple read in progress.
*/
#if !defined(__WIN__) && defined(SIGPIPE) && !defined(THREAD)
#define init_sigpipe_variables sig_return old_signal_handler=(sig_return) 0;
#define set_sigpipe(mysql) if ((mysql)->client_flag & CLIENT_IGNORE_SIGPIPE) old_signal_handler=signal(SIGPIPE,pipe_sig_handler)
#define reset_sigpipe(mysql) if ((mysql)->client_flag & CLIENT_IGNORE_SIGPIPE) signal(SIGPIPE,old_signal_handler);
#else
#define init_sigpipe_variables
#define set_sigpipe(mysql)
#define reset_sigpipe(mysql)
#endif
/****************************************************************************
* A modified version of connect(). connect2() allows you to specify
* a timeout value, in seconds, that we should wait until we
* derermine we can't connect to a particular host. If timeout is 0,
* connect2() will behave exactly like connect().
*
* Base version coded by Steve Bernacki, Jr. <steve@navinet.net>
*****************************************************************************/
static int connect2(my_socket s, const struct sockaddr *name, uint namelen,
uint timeout)
{
#if defined(__WIN__) || defined(OS2)
return connect(s, (struct sockaddr*) name, namelen);
#else
int flags, res, s_err;
SOCKOPT_OPTLEN_TYPE s_err_size = sizeof(uint);
fd_set sfds;
struct timeval tv;
time_t start_time, now_time;
/* If they passed us a timeout of zero, we should behave
* exactly like the normal connect() call does.
*/
if (timeout == 0)
return connect(s, (struct sockaddr*) name, namelen);
flags = fcntl(s, F_GETFL, 0); /* Set socket to not block */
#ifdef O_NONBLOCK
fcntl(s, F_SETFL, flags | O_NONBLOCK); /* and save the flags.. */
#endif
res = connect(s, (struct sockaddr*) name, namelen);
s_err = errno; /* Save the error... */
fcntl(s, F_SETFL, flags);
if ((res != 0) && (s_err != EINPROGRESS))
{
errno = s_err; /* Restore it */
return(-1);
}
if (res == 0) /* Connected quickly! */
return(0);
/* Otherwise, our connection is "in progress." We can use
* the select() call to wait up to a specified period of time
* for the connection to suceed. If select() returns 0
* (after waiting howevermany seconds), our socket never became
* writable (host is probably unreachable.) Otherwise, if
* select() returns 1, then one of two conditions exist:
*
* 1. An error occured. We use getsockopt() to check for this.
* 2. The connection was set up sucessfully: getsockopt() will
* return 0 as an error.
*
* Thanks goes to Andrew Gierth <andrew@erlenstar.demon.co.uk>
* who posted this method of timing out a connect() in
* comp.unix.programmer on August 15th, 1997.
*/
FD_ZERO(&sfds);
FD_SET(s, &sfds);
/*
* select could be interrupted by a signal, and if it is,
* the timeout should be adjusted and the select restarted
* to work around OSes that don't restart select and
* implementations of select that don't adjust tv upon
* failure to reflect the time remaining
*/
start_time = time(NULL);
for (;;)
{
tv.tv_sec = (long) timeout;
tv.tv_usec = 0;
if ((res = select(s+1, NULL, &sfds, NULL, &tv)) >= 0)
break;
now_time=time(NULL);
timeout-= (uint) (now_time - start_time);
if (errno != EINTR || (int) timeout <= 0)
return -1;
}
/* select() returned something more interesting than zero, let's
* see if we have any errors. If the next two statements pass,
* we've got an open socket!
*/
s_err=0;
if (getsockopt(s, SOL_SOCKET, SO_ERROR, (char*) &s_err, &s_err_size) != 0)
return(-1);
if (s_err)
{ /* getsockopt could succeed */
errno = s_err;
return(-1); /* but return an error... */
}
return(0); /* It's all good! */
#endif
}
/*
** Create a named pipe connection
*/
#ifdef __WIN__
HANDLE create_named_pipe(NET *net, uint connect_timeout, char **arg_host,
char **arg_unix_socket)
{
HANDLE hPipe=INVALID_HANDLE_VALUE;
char szPipeName [ 257 ];
DWORD dwMode;
int i;
my_bool testing_named_pipes=0;
char *host= *arg_host, *unix_socket= *arg_unix_socket;
if ( ! unix_socket || (unix_socket)[0] == 0x00)
unix_socket = mysql_unix_port;
if (!host || !strcmp(host,LOCAL_HOST))
host=LOCAL_HOST_NAMEDPIPE;
sprintf( szPipeName, "\\\\%s\\pipe\\%s", host, unix_socket);
DBUG_PRINT("info",("Server name: '%s'. Named Pipe: %s",
host, unix_socket));
for (i=0 ; i < 100 ; i++) /* Don't retry forever */
{
if ((hPipe = CreateFile(szPipeName,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
0,
NULL )) != INVALID_HANDLE_VALUE)
break;
if (GetLastError() != ERROR_PIPE_BUSY)
{
net->last_errno=CR_NAMEDPIPEOPEN_ERROR;
sprintf(net->last_error,ER(net->last_errno),host, unix_socket,
(ulong) GetLastError());
return INVALID_HANDLE_VALUE;
}
/* wait for for an other instance */
if (! WaitNamedPipe(szPipeName, connect_timeout*1000) )
{
net->last_errno=CR_NAMEDPIPEWAIT_ERROR;
sprintf(net->last_error,ER(net->last_errno),host, unix_socket,
(ulong) GetLastError());
return INVALID_HANDLE_VALUE;
}
}
if (hPipe == INVALID_HANDLE_VALUE)
{
net->last_errno=CR_NAMEDPIPEOPEN_ERROR;
sprintf(net->last_error,ER(net->last_errno),host, unix_socket,
(ulong) GetLastError());
return INVALID_HANDLE_VALUE;
}
dwMode = PIPE_READMODE_BYTE | PIPE_WAIT;
if ( !SetNamedPipeHandleState(hPipe, &dwMode, NULL, NULL) )
{
CloseHandle( hPipe );
net->last_errno=CR_NAMEDPIPESETSTATE_ERROR;
sprintf(net->last_error,ER(net->last_errno),host, unix_socket,
(ulong) GetLastError());
return INVALID_HANDLE_VALUE;
}
*arg_host=host ; *arg_unix_socket=unix_socket; /* connect arg */
return (hPipe);
}
#endif
/*****************************************************************************
** read a packet from server. Give error message if socket was down
** or packet is an error message
*****************************************************************************/
uint
net_safe_read(MYSQL *mysql)
{
NET *net= &mysql->net;
uint len=0;
init_sigpipe_variables
/* Don't give sigpipe errors if the client doesn't want them */
set_sigpipe(mysql);
if (net->vio != 0)
len=my_net_read(net);
reset_sigpipe(mysql);
if (len == packet_error || len == 0)
{
DBUG_PRINT("error",("Wrong connection or packet. fd: %s len: %d",
vio_description(net->vio),len));
end_server(mysql);
net->last_errno=(net->last_errno == ER_NET_PACKET_TOO_LARGE ?
CR_NET_PACKET_TOO_LARGE:
CR_SERVER_LOST);
strmov(net->last_error,ER(net->last_errno));
return(packet_error);
}
if (net->read_pos[0] == 255)
{
if (len > 3)
{
char *pos=(char*) net->read_pos+1;
if (mysql->protocol_version > 9)
{ /* New client protocol */
net->last_errno=uint2korr(pos);
pos+=2;
len-=2;
}
else
{
net->last_errno=CR_UNKNOWN_ERROR;
len--;
}
(void) strmake(net->last_error,(char*) pos,
min(len,sizeof(net->last_error)-1));
}
else
{
net->last_errno=CR_UNKNOWN_ERROR;
(void) strmov(net->last_error,ER(net->last_errno));
}
DBUG_PRINT("error",("Got error: %d (%s)", net->last_errno,
net->last_error));
return(packet_error);
}
return len;
}
/* Get the length of next field. Change parameter to point at fieldstart */
static ulong
net_field_length(uchar **packet)
{
reg1 uchar *pos= *packet;
if (*pos < 251)
{
(*packet)++;
return (ulong) *pos;
}
if (*pos == 251)
{
(*packet)++;
return NULL_LENGTH;
}
if (*pos == 252)
{
(*packet)+=3;
return (ulong) uint2korr(pos+1);
}
if (*pos == 253)
{
(*packet)+=4;
return (ulong) uint3korr(pos+1);
}
(*packet)+=9; /* Must be 254 when here */
return (ulong) uint4korr(pos+1);
}
/* Same as above, but returns ulonglong values */
static my_ulonglong
net_field_length_ll(uchar **packet)
{
reg1 uchar *pos= *packet;
if (*pos < 251)
{
(*packet)++;
return (my_ulonglong) *pos;
}
if (*pos == 251)
{
(*packet)++;
return (my_ulonglong) NULL_LENGTH;
}
if (*pos == 252)
{
(*packet)+=3;
return (my_ulonglong) uint2korr(pos+1);
}
if (*pos == 253)
{
(*packet)+=4;
return (my_ulonglong) uint3korr(pos+1);
}
(*packet)+=9; /* Must be 254 when here */
#ifdef NO_CLIENT_LONGLONG
return (my_ulonglong) uint4korr(pos+1);
#else
return (my_ulonglong) uint8korr(pos+1);
#endif
}
static void free_rows(MYSQL_DATA *cur)
{
if (cur)
{
free_root(&cur->alloc,MYF(0));
my_free((gptr) cur,MYF(0));
}
}
int
simple_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
uint length, my_bool skipp_check)
{
NET *net= &mysql->net;
int result= -1;
init_sigpipe_variables
/* Don't give sigpipe errors if the client doesn't want them */
set_sigpipe(mysql);
if (mysql->net.vio == 0)
{ /* Do reconnect if possible */
if (mysql_reconnect(mysql))
{
net->last_errno=CR_SERVER_GONE_ERROR;
strmov(net->last_error,ER(net->last_errno));
goto end;
}
}
if (mysql->status != MYSQL_STATUS_READY)
{
strmov(net->last_error,ER(mysql->net.last_errno=CR_COMMANDS_OUT_OF_SYNC));
goto end;
}
mysql->net.last_error[0]=0;
mysql->net.last_errno=0;
mysql->info=0;
mysql->affected_rows= ~(my_ulonglong) 0;
net_clear(net); /* Clear receive buffer */
if (!arg)
arg="";
if (net_write_command(net,(uchar) command,arg,
length ? length : (ulong) strlen(arg)))
{
DBUG_PRINT("error",("Can't send command to server. Error: %d",socket_errno));
end_server(mysql);
if (mysql_reconnect(mysql) ||
net_write_command(net,(uchar) command,arg,
length ? length : (ulong) strlen(arg)))
{
net->last_errno=CR_SERVER_GONE_ERROR;
strmov(net->last_error,ER(net->last_errno));
goto end;
}
}
result=0;
if (!skipp_check)
result= ((mysql->packet_length=net_safe_read(mysql)) == packet_error ?
-1 : 0);
end:
reset_sigpipe(mysql);
return result;
}
static void free_old_query(MYSQL *mysql)
{
DBUG_ENTER("free_old_query");
if (mysql->fields)
free_root(&mysql->field_alloc,MYF(0));
init_alloc_root(&mysql->field_alloc,8192,0); /* Assume rowlength < 8192 */
mysql->fields=0;
mysql->field_count=0; /* For API */
DBUG_VOID_RETURN;
}
#if defined(HAVE_GETPWUID) && defined(NO_GETPWUID_DECL)
struct passwd *getpwuid(uid_t);
char* getlogin(void);
#endif
#if !defined(MSDOS) && ! defined(VMS) && !defined(__WIN__) && !defined(OS2)
static void read_user_name(char *name)
{
DBUG_ENTER("read_user_name");
if (geteuid() == 0)
(void) strmov(name,"root"); /* allow use of surun */
else
{
#ifdef HAVE_GETPWUID
struct passwd *skr;
const char *str;
if ((str=getlogin()) == NULL)
{
if ((skr=getpwuid(geteuid())) != NULL)
str=skr->pw_name;
else if (!(str=getenv("USER")) && !(str=getenv("LOGNAME")) &&
!(str=getenv("LOGIN")))
str="UNKNOWN_USER";
}
(void) strmake(name,str,USERNAME_LENGTH);
#elif HAVE_CUSERID
(void) cuserid(name);
#else
strmov(name,"UNKNOWN_USER");
#endif
}
DBUG_VOID_RETURN;
}
#else /* If MSDOS || VMS */
static void read_user_name(char *name)
{
char *str=getenv("USER"); /* ODBC will send user variable */
strmake(name,str ? str : "ODBC", USERNAME_LENGTH);
}
#endif
#ifdef __WIN__
static my_bool is_NT(void)
{
char *os=getenv("OS");
return (os && !strcmp(os, "Windows_NT")) ? 1 : 0;
}
#endif
/*
** Expand wildcard to a sql string
*/
static void
append_wild(char *to, char *end, const char *wild)
{
end-=5; /* Some extra */
if (wild && wild[0])
{
to=strmov(to," like '");
while (*wild && to < end)
{
if (*wild == '\\' || *wild == '\'')
*to++='\\';
*to++= *wild++;
}
if (*wild) /* Too small buffer */
*to++='%'; /* Nicer this way */
to[0]='\'';
to[1]=0;
}
}
/**************************************************************************
** Init debugging if MYSQL_DEBUG environment variable is found
**************************************************************************/
void STDCALL
mysql_debug(const char *debug __attribute__((unused)))
{
#ifndef DBUG_OFF
char *env;
if (_db_on_)
return; /* Already using debugging */
if (debug)
{
DEBUGGER_ON;
DBUG_PUSH(debug);
}
else if ((env = getenv("MYSQL_DEBUG")))
{
DEBUGGER_ON;
DBUG_PUSH(env);
#if !defined(_WINVER) && !defined(WINVER)
puts("\n-------------------------------------------------------");
puts("MYSQL_DEBUG found. libmysql started with the following:");
puts(env);
puts("-------------------------------------------------------\n");
#else
{
char buff[80];
strmov(strmov(buff,"libmysql: "),env);
MessageBox((HWND) 0,"Debugging variable MYSQL_DEBUG used",buff,MB_OK);
}
#endif
}
#endif
}
/**************************************************************************
** Close the server connection if we get a SIGPIPE
ARGSUSED
**************************************************************************/
static sig_handler
pipe_sig_handler(int sig __attribute__((unused)))
{
DBUG_PRINT("info",("Hit by signal %d",sig));
#ifdef DONT_REMEMBER_SIGNAL
(void) signal(SIGPIPE,pipe_sig_handler);
#endif
}
/**************************************************************************
** Shut down connection
**************************************************************************/
static void
end_server(MYSQL *mysql)
{
DBUG_ENTER("end_server");
if (mysql->net.vio != 0)
{
init_sigpipe_variables
DBUG_PRINT("info",("Net: %s", vio_description(mysql->net.vio)));
set_sigpipe(mysql);
vio_delete(mysql->net.vio);
reset_sigpipe(mysql);
mysql->net.vio= 0; /* Marker */
}
net_end(&mysql->net);
free_old_query(mysql);
DBUG_VOID_RETURN;
}
void STDCALL
mysql_free_result(MYSQL_RES *result)
{
DBUG_ENTER("mysql_free_result");
DBUG_PRINT("enter",("mysql_res: %lx",result));
if (result)
{
if (result->handle && result->handle->status == MYSQL_STATUS_USE_RESULT)
{
DBUG_PRINT("warning",("Not all rows in set were read; Ignoring rows"));
for (;;)
{
uint pkt_len;
if ((pkt_len=(uint) net_safe_read(result->handle)) == packet_error)
break;
if (pkt_len == 1 && result->handle->net.read_pos[0] == 254)
break; /* End of data */
}
result->handle->status=MYSQL_STATUS_READY;
}
free_rows(result->data);
if (result->fields)
free_root(&result->field_alloc,MYF(0));
if (result->row)
my_free((gptr) result->row,MYF(0));
my_free((gptr) result,MYF(0));
}
DBUG_VOID_RETURN;
}
/****************************************************************************
** Get options from my.cnf
****************************************************************************/
static const char *default_options[]=
{
"port","socket","compress","password","pipe", "timeout", "user",
"init-command", "host", "database", "debug", "return-found-rows",
"ssl-key" ,"ssl-cert" ,"ssl-ca" ,"ssl-capath",
"character-set-dir", "default-character-set", "interactive-timeout",
"connect-timeout", "local-infile", "disable-local-infile",
NullS
};
static TYPELIB option_types={array_elements(default_options)-1,
"options",default_options};
static void mysql_read_default_options(struct st_mysql_options *options,
const char *filename,const char *group)
{
int argc;
char *argv_buff[1],**argv;
const char *groups[3];
DBUG_ENTER("mysql_read_default_options");
DBUG_PRINT("enter",("file: %s group: %s",filename,group ? group :"NULL"));
argc=1; argv=argv_buff; argv_buff[0]= (char*) "client";
groups[0]= (char*) "client"; groups[1]= (char*) group; groups[2]=0;
load_defaults(filename, groups, &argc, &argv);
if (argc != 1) /* If some default option */
{
char **option=argv;
while (*++option)
{
/* DBUG_PRINT("info",("option: %s",option[0])); */
if (option[0][0] == '-' && option[0][1] == '-')
{
char *end=strcend(*option,'=');
char *opt_arg=0;
if (*end)
{
opt_arg=end+1;
*end=0; /* Remove '=' */
}
/* Change all '_' in variable name to '-' */
for (end= *option ; (end= strcend(end,'_')) ; )
*end= '-';
switch (find_type(*option+2,&option_types,2)) {
case 1: /* port */
if (opt_arg)
options->port=atoi(opt_arg);
break;
case 2: /* socket */
if (opt_arg)
{
my_free(options->unix_socket,MYF(MY_ALLOW_ZERO_PTR));
options->unix_socket=my_strdup(opt_arg,MYF(MY_WME));
}
break;
case 3: /* compress */
options->compress=1;
break;
case 4: /* password */
if (opt_arg)
{
my_free(options->password,MYF(MY_ALLOW_ZERO_PTR));
options->password=my_strdup(opt_arg,MYF(MY_WME));
}
break;
case 5: /* pipe */
options->named_pipe=1; /* Force named pipe */
break;
case 20: /* connect_timeout */
case 6: /* timeout */
if (opt_arg)
options->connect_timeout=atoi(opt_arg);
break;
case 7: /* user */
if (opt_arg)
{
my_free(options->user,MYF(MY_ALLOW_ZERO_PTR));
options->user=my_strdup(opt_arg,MYF(MY_WME));
}
break;
case 8: /* init-command */
if (opt_arg)
{
my_free(options->init_command,MYF(MY_ALLOW_ZERO_PTR));
options->init_command=my_strdup(opt_arg,MYF(MY_WME));
}
break;
case 9: /* host */
if (opt_arg)
{
my_free(options->host,MYF(MY_ALLOW_ZERO_PTR));
options->host=my_strdup(opt_arg,MYF(MY_WME));
}
break;
case 10: /* database */
if (opt_arg)
{
my_free(options->db,MYF(MY_ALLOW_ZERO_PTR));
options->db=my_strdup(opt_arg,MYF(MY_WME));
}
break;
case 11: /* debug */
mysql_debug(opt_arg ? opt_arg : "d:t:o,/tmp/client.trace");
break;
case 12: /* return-found-rows */
options->client_flag|=CLIENT_FOUND_ROWS;
break;
#ifdef HAVE_OPENSSL
case 13: /* ssl_key */
my_free(options->ssl_key, MYF(MY_ALLOW_ZERO_PTR));
options->ssl_key = my_strdup(opt_arg, MYF(MY_WME));
break;
case 14: /* ssl_cert */
my_free(options->ssl_cert, MYF(MY_ALLOW_ZERO_PTR));
options->ssl_cert = my_strdup(opt_arg, MYF(MY_WME));
break;
case 15: /* ssl_ca */
my_free(options->ssl_ca, MYF(MY_ALLOW_ZERO_PTR));
options->ssl_ca = my_strdup(opt_arg, MYF(MY_WME));
break;
case 16: /* ssl_capath */
my_free(options->ssl_capath, MYF(MY_ALLOW_ZERO_PTR));
options->ssl_capath = my_strdup(opt_arg, MYF(MY_WME));
break;
#else
case 13: /* Ignore SSL options */
case 14:
case 15:
case 16:
break;
#endif /* HAVE_OPENSSL */
case 17: /* charset-lib */
my_free(options->charset_dir,MYF(MY_ALLOW_ZERO_PTR));
options->charset_dir = my_strdup(opt_arg, MYF(MY_WME));
break;
case 18:
my_free(options->charset_name,MYF(MY_ALLOW_ZERO_PTR));
options->charset_name = my_strdup(opt_arg, MYF(MY_WME));
break;
case 19: /* Interactive-timeout */
options->client_flag|= CLIENT_INTERACTIVE;
break;
case 21:
if (!opt_arg || atoi(opt_arg) != 0)
options->client_flag|= CLIENT_LOCAL_FILES;
else
options->client_flag&= ~CLIENT_LOCAL_FILES;
break;
case 22:
options->client_flag&= CLIENT_LOCAL_FILES;
break;
default:
DBUG_PRINT("warning",("unknown option: %s",option[0]));
}
}
}
}
free_defaults(argv);
DBUG_VOID_RETURN;
}
/***************************************************************************
** Change field rows to field structs
***************************************************************************/
static MYSQL_FIELD *
unpack_fields(MYSQL_DATA *data,MEM_ROOT *alloc,uint fields,
my_bool default_value, my_bool long_flag_protocol)
{
MYSQL_ROWS *row;
MYSQL_FIELD *field,*result;
DBUG_ENTER("unpack_fields");
field=result=(MYSQL_FIELD*) alloc_root(alloc,sizeof(MYSQL_FIELD)*fields);
if (!result)
DBUG_RETURN(0);
for (row=data->data; row ; row = row->next,field++)
{
field->table= strdup_root(alloc,(char*) row->data[0]);
field->name= strdup_root(alloc,(char*) row->data[1]);
field->length= (uint) uint3korr(row->data[2]);
field->type= (enum enum_field_types) (uchar) row->data[3][0];
if (long_flag_protocol)
{
field->flags= uint2korr(row->data[4]);
field->decimals=(uint) (uchar) row->data[4][2];
}
else
{
field->flags= (uint) (uchar) row->data[4][0];
field->decimals=(uint) (uchar) row->data[4][1];
}
if (INTERNAL_NUM_FIELD(field))
field->flags|= NUM_FLAG;
if (default_value && row->data[5])
field->def=strdup_root(alloc,(char*) row->data[5]);
else
field->def=0;
field->max_length= 0;
}
free_rows(data); /* Free old data */
DBUG_RETURN(result);
}
/* Read all rows (fields or data) from server */
static MYSQL_DATA *read_rows(MYSQL *mysql,MYSQL_FIELD *mysql_fields,
uint fields)
{
uint field,pkt_len;
ulong len;
uchar *cp;
char *to, *end_to;
MYSQL_DATA *result;
MYSQL_ROWS **prev_ptr,*cur;
NET *net = &mysql->net;
DBUG_ENTER("read_rows");
if ((pkt_len=(uint) net_safe_read(mysql)) == packet_error)
DBUG_RETURN(0);
if (!(result=(MYSQL_DATA*) my_malloc(sizeof(MYSQL_DATA),
MYF(MY_WME | MY_ZEROFILL))))
{
net->last_errno=CR_OUT_OF_MEMORY;
strmov(net->last_error,ER(net->last_errno));
DBUG_RETURN(0);
}
init_alloc_root(&result->alloc,8192,0); /* Assume rowlength < 8192 */
result->alloc.min_malloc=sizeof(MYSQL_ROWS);
prev_ptr= &result->data;
result->rows=0;
result->fields=fields;
while (*(cp=net->read_pos) != 254 || pkt_len != 1)
{
result->rows++;
if (!(cur= (MYSQL_ROWS*) alloc_root(&result->alloc,
sizeof(MYSQL_ROWS))) ||
!(cur->data= ((MYSQL_ROW)
alloc_root(&result->alloc,
(fields+1)*sizeof(char *)+pkt_len))))
{
free_rows(result);
net->last_errno=CR_OUT_OF_MEMORY;
strmov(net->last_error,ER(net->last_errno));
DBUG_RETURN(0);
}
*prev_ptr=cur;
prev_ptr= &cur->next;
to= (char*) (cur->data+fields+1);
end_to = to + pkt_len - 1;
for (field=0 ; field < fields ; field++)
{
if ((len=(ulong) net_field_length(&cp)) == NULL_LENGTH)
{ /* null field */
cur->data[field] = 0;
}
else
{
cur->data[field] = to;
if (len > end_to - to)
{
free_rows(result);
net->last_errno = CR_UNKNOWN_ERROR;
strmov(net->last_error, ER(net->last_errno));
DBUG_RETURN(0);
}
memcpy(to,(char*) cp,len); to[len]=0;
to+=len+1;
cp+=len;
if (mysql_fields)
{
if (mysql_fields[field].max_length < len)
mysql_fields[field].max_length=len;
}
}
}
cur->data[field]=to; /* End of last field */
if ((pkt_len=net_safe_read(mysql)) == packet_error)
{
free_rows(result);
DBUG_RETURN(0);
}
}
*prev_ptr=0; /* last pointer is null */
DBUG_PRINT("exit",("Got %d rows",result->rows));
DBUG_RETURN(result);
}
/*
** Read one row. Uses packet buffer as storage for fields.
** When next packet is read, the previous field values are destroyed
*/
static int
read_one_row(MYSQL *mysql,uint fields,MYSQL_ROW row, ulong *lengths)
{
uint field;
ulong pkt_len,len;
uchar *pos,*prev_pos,*end_pos;
if ((pkt_len=(uint) net_safe_read(mysql)) == packet_error)
return -1;
if (pkt_len == 1 && mysql->net.read_pos[0] == 254)
return 1; /* End of data */
prev_pos= 0; /* allowed to write at packet[-1] */
pos=mysql->net.read_pos;
end_pos=pos+pkt_len;
for (field=0 ; field < fields ; field++)
{
if ((len=(ulong) net_field_length(&pos)) == NULL_LENGTH)
{ /* null field */
row[field] = 0;
*lengths++=0;
}
else
{
if (len > end_pos - pos)
{
mysql->net.last_errno=CR_UNKNOWN_ERROR;
strmov(mysql->net.last_error, ER(mysql->net.last_errno));
return -1;
}
row[field] = (char*) pos;
pos+=len;
*lengths++=len;
}
if (prev_pos)
*prev_pos=0; /* Terminate prev field */
prev_pos=pos;
}
row[field]=(char*) prev_pos+1; /* End of last field */
*prev_pos=0; /* Terminate last field */
return 0;
}
/****************************************************************************
** Init MySQL structure or allocate one
****************************************************************************/
MYSQL * STDCALL
mysql_init(MYSQL *mysql)
{
mysql_once_init();
if (!mysql)
{
if (!(mysql=(MYSQL*) my_malloc(sizeof(*mysql),MYF(MY_WME | MY_ZEROFILL))))
return 0;
mysql->free_me=1;
mysql->net.vio = 0;
}
else
bzero((char*) (mysql),sizeof(*(mysql)));
mysql->options.connect_timeout=CONNECT_TIMEOUT;
#if defined(SIGPIPE) && defined(THREAD) && !defined(__WIN__)
if (!((mysql)->client_flag & CLIENT_IGNORE_SIGPIPE))
(void) signal(SIGPIPE,pipe_sig_handler);
#endif
/*
Only enable LOAD DATA INFILE by default if configured with
--with-enabled-local-inflile
*/
#ifdef ENABLED_LOCAL_INFILE
mysql->options.client_flag|= CLIENT_LOCAL_FILES;
#endif
return mysql;
}
static void mysql_once_init()
{
if (!mysql_client_init)
{
mysql_client_init=1;
my_init(); /* Will init threads */
init_client_errs();
if (!mysql_port)
{
mysql_port = MYSQL_PORT;
#ifndef MSDOS
{
struct servent *serv_ptr;
char *env;
if ((serv_ptr = getservbyname("mysql", "tcp")))
mysql_port = (uint) ntohs((ushort) serv_ptr->s_port);
if ((env = getenv("MYSQL_TCP_PORT")))
mysql_port =(uint) atoi(env);
}
#endif
}
if (!mysql_unix_port)
{
char *env;
#ifdef __WIN__
mysql_unix_port = (char*) MYSQL_NAMEDPIPE;
#else
mysql_unix_port = (char*) MYSQL_UNIX_ADDR;
#endif
if ((env = getenv("MYSQL_UNIX_PORT")))
mysql_unix_port = env;
}
mysql_debug(NullS);
#if defined(SIGPIPE) && !defined(THREAD) && !defined(__WIN__)
(void) signal(SIGPIPE,SIG_IGN);
#endif
}
#ifdef THREAD
else
my_thread_init(); /* Init if new thread */
#endif
}
#ifdef HAVE_OPENSSL
/**************************************************************************
** Fill in SSL part of MYSQL structure and set 'use_ssl' flag.
** NB! Errors are not reported until you do mysql_real_connect.
**************************************************************************/
int STDCALL
mysql_ssl_set(MYSQL *mysql, const char *key, const char *cert,
const char *ca, const char *capath)
{
mysql->options.ssl_key = key==0 ? 0 : my_strdup(key,MYF(0));
mysql->options.ssl_cert = cert==0 ? 0 : my_strdup(cert,MYF(0));
mysql->options.ssl_ca = ca==0 ? 0 : my_strdup(ca,MYF(0));
mysql->options.ssl_capath = capath==0 ? 0 : my_strdup(capath,MYF(0));
mysql->options.use_ssl = true;
mysql->connector_fd = new_VioSSLConnectorFd(key, cert, ca, capath);
return 0;
}
/**************************************************************************
**************************************************************************/
char * STDCALL
mysql_ssl_cipher(MYSQL *mysql)
{
return (char *)mysql->net.vio->cipher_description();
}
/**************************************************************************
** Free strings in the SSL structure and clear 'use_ssl' flag.
** NB! Errors are not reported until you do mysql_real_connect.
**************************************************************************/
int STDCALL
mysql_ssl_clear(MYSQL *mysql)
{
my_free(mysql->options.ssl_key, MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.ssl_cert, MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.ssl_ca, MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.ssl_capath, MYF(MY_ALLOW_ZERO_PTR));
mysql->options.ssl_key = 0;
mysql->options.ssl_cert = 0;
mysql->options.ssl_ca = 0;
mysql->options.ssl_capath = 0;
mysql->options.use_ssl = false;
mysql->connector_fd->delete();
mysql->connector_fd = 0;
return 0;
}
#endif /* HAVE_OPENSSL */
/**************************************************************************
** 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);
}
}
/*
** Note that the mysql argument must be initialized with mysql_init()
** before calling mysql_real_connect !
*/
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,uint client_flag)
{
char buff[NAME_LEN+USERNAME_LENGTH+100],charset_name_buff[16];
char *end,*host_info,*charset_name;
my_socket sock;
uint32 ip_addr;
struct sockaddr_in sock_addr;
uint pkt_length;
NET *net= &mysql->net;
#ifdef __WIN__
HANDLE hPipe=INVALID_HANDLE_VALUE;
#endif
#ifdef HAVE_SYS_UN_H
struct sockaddr_un UNIXaddr;
#endif
init_sigpipe_variables
DBUG_ENTER("mysql_real_connect");
DBUG_PRINT("enter",("host: %s db: %s user: %s",
host ? host : "(Null)",
db ? db : "(Null)",
user ? user : "(Null)"));
/* Don't give sigpipe errors if the client doesn't want them */
set_sigpipe(mysql);
net->vio = 0; /* If something goes wrong */
/* 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;
}
/* Some empty-string-tests are done because of ODBC */
if (!host || !host[0])
host=mysql->options.host;
if (!user || !user[0])
user=mysql->options.user;
if (!passwd)
{
passwd=mysql->options.password;
#ifndef DONT_USE_MYSQL_PWD
if (!passwd)
passwd=getenv("MYSQL_PWD"); /* get it from environment (haneke) */
#endif
}
if (!db || !db[0])
db=mysql->options.db;
if (!port)
port=mysql->options.port;
if (!unix_socket)
unix_socket=mysql->options.unix_socket;
mysql->reconnect=1; /* Reconnect as default */
mysql->server_status=SERVER_STATUS_AUTOCOMMIT;
/*
** Grab a socket and connect it to the server
*/
#if defined(HAVE_SYS_UN_H)
if ((!host || !strcmp(host,LOCAL_HOST)) && (unix_socket || mysql_unix_port))
{
host=LOCAL_HOST;
if (!unix_socket)
unix_socket=mysql_unix_port;
host_info=(char*) ER(CR_LOCALHOST_CONNECTION);
DBUG_PRINT("info",("Using UNIX sock '%s'",unix_socket));
if ((sock = socket(AF_UNIX,SOCK_STREAM,0)) == SOCKET_ERROR)
{
net->last_errno=CR_SOCKET_CREATE_ERROR;
sprintf(net->last_error,ER(net->last_errno),socket_errno);
goto error;
}
net->vio = vio_new(sock, VIO_TYPE_SOCKET, TRUE);
bzero((char*) &UNIXaddr,sizeof(UNIXaddr));
UNIXaddr.sun_family = AF_UNIX;
strmov(UNIXaddr.sun_path, unix_socket);
if (connect2(sock,(struct sockaddr *) &UNIXaddr, sizeof(UNIXaddr),
mysql->options.connect_timeout) <0)
{
DBUG_PRINT("error",("Got error %d on connect to local server",socket_errno));
net->last_errno=CR_CONNECTION_ERROR;
sprintf(net->last_error,ER(net->last_errno),unix_socket,socket_errno);
goto error;
}
}
else
#elif defined(__WIN__)
{
if ((unix_socket ||
!host && is_NT() ||
host && !strcmp(host,LOCAL_HOST_NAMEDPIPE) ||
mysql->options.named_pipe || !have_tcpip))
{
sock=0;
if ((hPipe=create_named_pipe(net, mysql->options.connect_timeout,
(char**) &host, (char**) &unix_socket)) ==
INVALID_HANDLE_VALUE)
{
DBUG_PRINT("error",
("host: '%s' socket: '%s' named_pipe: %d have_tcpip: %d",
host ? host : "<null>",
unix_socket ? unix_socket : "<null>",
(int) mysql->options.named_pipe,
(int) have_tcpip));
if (mysql->options.named_pipe ||
(host && !strcmp(host,LOCAL_HOST_NAMEDPIPE)) ||
(unix_socket && !strcmp(unix_socket,MYSQL_NAMEDPIPE)))
goto error; /* User only requested named pipes */
/* Try also with TCP/IP */
}
else
{
net->vio=vio_new_win32pipe(hPipe);
sprintf(host_info=buff, ER(CR_NAMEDPIPE_CONNECTION), host,
unix_socket);
}
}
}
if (hPipe == INVALID_HANDLE_VALUE)
#endif
{
unix_socket=0; /* This is not used */
if (!port)
port=mysql_port;
if (!host)
host=LOCAL_HOST;
sprintf(host_info=buff,ER(CR_TCP_CONNECTION),host);
DBUG_PRINT("info",("Server name: '%s'. TCP sock: %d", host,port));
/* _WIN64 ; Assume that the (int) range is enough for socket() */
if ((sock = (my_socket) socket(AF_INET,SOCK_STREAM,0)) == SOCKET_ERROR)
{
net->last_errno=CR_IPSOCK_ERROR;
sprintf(net->last_error,ER(net->last_errno),socket_errno);
goto error;
}
net->vio = vio_new(sock,VIO_TYPE_TCPIP,FALSE);
bzero((char*) &sock_addr,sizeof(sock_addr));
sock_addr.sin_family = AF_INET;
/*
** The server name may be a host name or IP address
*/
if ((int) (ip_addr = inet_addr(host)) != (int) INADDR_NONE)
{
memcpy_fixed(&sock_addr.sin_addr,&ip_addr,sizeof(ip_addr));
}
else
#if defined(HAVE_GETHOSTBYNAME_R) && defined(_REENTRANT) && defined(THREAD)
{
int tmp_errno;
struct hostent tmp_hostent,*hp;
char buff2[GETHOSTBYNAME_BUFF_SIZE];
hp = my_gethostbyname_r(host,&tmp_hostent,buff2,sizeof(buff2),
&tmp_errno);
if (!hp)
{
net->last_errno=CR_UNKNOWN_HOST;
sprintf(net->last_error, ER(CR_UNKNOWN_HOST), host, tmp_errno);
goto error;
}
memcpy(&sock_addr.sin_addr,hp->h_addr, (size_t) hp->h_length);
}
#else
{
struct hostent *hp;
if (!(hp=gethostbyname(host)))
{
net->last_errno=CR_UNKNOWN_HOST;
sprintf(net->last_error, ER(CR_UNKNOWN_HOST), host, socket_errno);
goto error;
}
memcpy(&sock_addr.sin_addr,hp->h_addr, (size_t) hp->h_length);
}
#endif
sock_addr.sin_port = (ushort) htons((ushort) port);
if (connect2(sock,(struct sockaddr *) &sock_addr, sizeof(sock_addr),
mysql->options.connect_timeout) <0)
{
DBUG_PRINT("error",("Got error %d on connect to '%s'",socket_errno,host));
net->last_errno= CR_CONN_HOST_ERROR;
sprintf(net->last_error ,ER(CR_CONN_HOST_ERROR), host, socket_errno);
goto error;
}
}
if (!net->vio || my_net_init(net, net->vio))
{
vio_delete(net->vio);
net->vio = 0;
net->last_errno=CR_OUT_OF_MEMORY;
strmov(net->last_error,ER(net->last_errno));
goto error;
}
vio_keepalive(net->vio,TRUE);
/* Get version info */
mysql->protocol_version= PROTOCOL_VERSION; /* Assume this */
if (mysql->options.connect_timeout &&
vio_poll_read(net->vio, mysql->options.connect_timeout))
{
net->last_errno= CR_SERVER_LOST;
strmov(net->last_error,ER(net->last_errno));
goto error;
}
if ((pkt_length=net_safe_read(mysql)) == packet_error)
goto error;
/* Check if version of protocoll matches current one */
mysql->protocol_version= net->read_pos[0];
DBUG_DUMP("packet",(char*) net->read_pos,10);
DBUG_PRINT("info",("mysql protocol version %d, server=%d",
PROTOCOL_VERSION, mysql->protocol_version));
if (mysql->protocol_version != PROTOCOL_VERSION &&
mysql->protocol_version != PROTOCOL_VERSION-1)
{
net->last_errno= CR_VERSION_ERROR;
sprintf(net->last_error, ER(CR_VERSION_ERROR), mysql->protocol_version,
PROTOCOL_VERSION);
goto error;
}
end=strend((char*) net->read_pos+1);
mysql->thread_id=uint4korr(end+1);
end+=5;
strmake(mysql->scramble_buff,end,8);
end+=9;
if (pkt_length >= (uint) (end+1 - (char*) net->read_pos))
mysql->server_capabilities=uint2korr(end);
if (pkt_length >= (uint) (end+18 - (char*) net->read_pos))
{
/* New protocol with 16 bytes to describe server characteristics */
mysql->server_language=end[2];
mysql->server_status=uint2korr(end+3);
}
/* Set character set */
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 */
if (!(mysql->charset =
get_charset((uint8) mysql->server_language, MYF(MY_WME))))
mysql->charset = default_charset_info; /* shouldn't be fatal */
}
else
mysql->charset=default_charset_info;
if (!mysql->charset)
{
net->last_errno=CR_CANT_READ_CHARSET;
if (mysql->options.charset_dir)
sprintf(net->last_error,ER(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(net->last_error,ER(net->last_errno),
charset_name ? charset_name : "unknown",
cs_dir_name);
}
goto error;
}
/* Save connection information */
if (!user) user="";
if (!passwd) passwd="";
if (!my_multi_malloc(MYF(0),
&mysql->host_info, (uint) strlen(host_info)+1,
&mysql->host, (uint) strlen(host)+1,
&mysql->unix_socket,unix_socket ?
(uint) strlen(unix_socket)+1 : (uint) 1,
&mysql->server_version,
(uint) (end - (char*) net->read_pos),
NullS) ||
!(mysql->user=my_strdup(user,MYF(0))) ||
!(mysql->passwd=my_strdup(passwd,MYF(0))))
{
strmov(net->last_error, ER(net->last_errno=CR_OUT_OF_MEMORY));
goto error;
}
strmov(mysql->host_info,host_info);
strmov(mysql->host,host);
if (unix_socket)
strmov(mysql->unix_socket,unix_socket);
else
mysql->unix_socket=0;
strmov(mysql->server_version,(char*) net->read_pos+1);
mysql->port=port;
client_flag|=mysql->options.client_flag;
/* Send client information for access check */
client_flag|=CLIENT_CAPABILITIES;
#ifdef HAVE_OPENSSL
if (mysql->options.use_ssl)
client_flag|=CLIENT_SSL;
#endif /* HAVE_OPENSSL */
if (db)
client_flag|=CLIENT_CONNECT_WITH_DB;
#ifdef HAVE_COMPRESS
if ((mysql->server_capabilities & CLIENT_COMPRESS) &&
(mysql->options.compress || (client_flag & CLIENT_COMPRESS)))
client_flag|=CLIENT_COMPRESS; /* We will use compression */
else
#endif
client_flag&= ~CLIENT_COMPRESS;
#ifdef HAVE_OPENSSL
if ((mysql->server_capabilities & CLIENT_SSL) &&
(mysql->options.use_ssl || (client_flag & CLIENT_SSL)))
{
DBUG_PRINT("info", ("Changing IO layer to SSL"));
client_flag |= CLIENT_SSL;
}
else
{
if (client_flag & CLIENT_SSL)
{
DBUG_PRINT("info", ("Leaving IO layer intact because server doesn't support SSL"));
}
client_flag &= ~CLIENT_SSL;
}
#endif /* HAVE_OPENSSL */
int2store(buff,client_flag);
mysql->client_flag=client_flag;
#ifdef HAVE_OPENSSL
/* Oops.. are we careful enough to not send ANY information */
/* without encryption? */
if (client_flag & CLIENT_SSL)
{
if (my_net_write(net,buff,(uint) (2)) || net_flush(net))
goto error;
/* Do the SSL layering. */
DBUG_PRINT("info", ("IO layer change in progress..."));
VioSSLConnectorFd* connector_fd = (VioSSLConnectorFd*)
(mysql->connector_fd);
VioSocket* vio_socket = (VioSocket*)(mysql->net.vio);
VioSSL* vio_ssl = connector_fd->connect(vio_socket);
mysql->net.vio = (NetVio*)(vio_ssl);
}
#endif /* HAVE_OPENSSL */
DBUG_PRINT("info",("Server version = '%s' capabilites: %ld status: %d client_flag: %d",
mysql->server_version,mysql->server_capabilities,
mysql->server_status, client_flag));
int3store(buff+2,max_allowed_packet);
if (user && user[0])
strmake(buff+5,user,32); /* Max user name */
else
read_user_name((char*) buff+5);
#ifdef _CUSTOMCONFIG_
#include "_cust_libmysql.h";
#endif
DBUG_PRINT("info",("user: %s",buff+5));
end=scramble(strend(buff+5)+1, mysql->scramble_buff, passwd,
(my_bool) (mysql->protocol_version == 9));
if (db && (mysql->server_capabilities & CLIENT_CONNECT_WITH_DB))
{
end=strmake(end+1,db,NAME_LEN);
mysql->db=my_strdup(db,MYF(MY_WME));
db=0;
}
if (my_net_write(net,buff,(uint) (end-buff)) || net_flush(net) ||
net_safe_read(mysql) == packet_error)
goto error;
if (client_flag & CLIENT_COMPRESS) /* We will use compression */
net->compress=1;
if (db && mysql_select_db(mysql,db))
goto error;
if (mysql->options.init_command)
{
my_bool reconnect=mysql->reconnect;
mysql->reconnect=0;
if (mysql_query(mysql,mysql->options.init_command))
goto error;
mysql_free_result(mysql_use_result(mysql));
mysql->reconnect=reconnect;
}
DBUG_PRINT("exit",("Mysql handler: %lx",mysql));
reset_sigpipe(mysql);
DBUG_RETURN(mysql);
error:
reset_sigpipe(mysql);
DBUG_PRINT("error",("message: %u (%s)",net->last_errno,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);
}
static my_bool mysql_reconnect(MYSQL *mysql)
{
MYSQL tmp_mysql;
DBUG_ENTER("mysql_reconnect");
if (!mysql->reconnect ||
(mysql->server_status & SERVER_STATUS_IN_TRANS) || !mysql->host_info)
{
/* Allov reconnect next time */
mysql->server_status&= ~SERVER_STATUS_IN_TRANS;
DBUG_RETURN(1);
}
mysql_init(&tmp_mysql);
tmp_mysql.options=mysql->options;
bzero((char*) &mysql->options,sizeof(mysql->options));
if (!mysql_real_connect(&tmp_mysql,mysql->host,mysql->user,mysql->passwd,
mysql->db, mysql->port, mysql->unix_socket,
mysql->client_flag))
DBUG_RETURN(1);
tmp_mysql.free_me=mysql->free_me;
mysql->free_me=0;
mysql_close(mysql);
*mysql=tmp_mysql;
net_clear(&mysql->net);
mysql->affected_rows= ~(my_ulonglong) 0;
DBUG_RETURN(0);
}
/**************************************************************************
** Change user and database
**************************************************************************/
my_bool STDCALL mysql_change_user(MYSQL *mysql, const char *user,
const char *passwd, const char *db)
{
char buff[512],*pos=buff;
DBUG_ENTER("mysql_change_user");
if (!user)
user="";
if (!passwd)
passwd="";
pos=strmov(pos,user)+1;
pos=scramble(pos, mysql->scramble_buff, passwd,
(my_bool) (mysql->protocol_version == 9));
pos=strmov(pos+1,db ? db : "");
if (simple_command(mysql,COM_CHANGE_USER, buff,(uint) (pos-buff),0))
DBUG_RETURN(1);
my_free(mysql->user,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->passwd,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->db,MYF(MY_ALLOW_ZERO_PTR));
mysql->user= my_strdup(user,MYF(MY_WME));
mysql->passwd=my_strdup(passwd,MYF(MY_WME));
mysql->db= db ? my_strdup(db,MYF(MY_WME)) : 0;
DBUG_RETURN(0);
}
/**************************************************************************
** Set current database
**************************************************************************/
int STDCALL
mysql_select_db(MYSQL *mysql, const char *db)
{
int error;
DBUG_ENTER("mysql_select_db");
DBUG_PRINT("enter",("db: '%s'",db));
if ((error=simple_command(mysql,COM_INIT_DB,db,(uint) strlen(db),0)))
DBUG_RETURN(error);
my_free(mysql->db,MYF(MY_ALLOW_ZERO_PTR));
mysql->db=my_strdup(db,MYF(MY_WME));
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->net.vio != 0)
{
free_old_query(mysql);
mysql->status=MYSQL_STATUS_READY; /* Force command */
mysql->reconnect=0;
simple_command(mysql,COM_QUIT,NullS,0,1);
end_server(mysql);
}
my_free((gptr) mysql->host_info,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->user,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->passwd,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->db,MYF(MY_ALLOW_ZERO_PTR));
my_free(mysql->options.init_command,MYF(MY_ALLOW_ZERO_PTR));
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));
/* Clear pointers for better safety */
mysql->host_info=mysql->user=mysql->passwd=mysql->db=0;
bzero((char*) &mysql->options,sizeof(mysql->options));
mysql->net.vio = 0;
#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;
}
/**************************************************************************
** Do a query. If query returned rows, free old rows.
** Read data by mysql_store_result or by repeat call of mysql_fetch_row
**************************************************************************/
int STDCALL
mysql_query(MYSQL *mysql, const char *query)
{
return mysql_real_query(mysql,query, (uint) strlen(query));
}
/*
Send the query and return so we can do something else.
Needs to be followed by mysql_read_query_result() when we want to
finish processing it.
*/
int STDCALL
mysql_send_query(MYSQL* mysql, const char* query, uint length)
{
return simple_command(mysql, COM_QUERY, query, length, 1);
}
int STDCALL mysql_read_query_result(MYSQL *mysql)
{
uchar *pos;
ulong field_count;
MYSQL_DATA *fields;
uint length;
DBUG_ENTER("mysql_read_query_result");
if ((length = net_safe_read(mysql)) == packet_error)
DBUG_RETURN(-1);
free_old_query(mysql); /* Free old result */
get_info:
pos=(uchar*) mysql->net.read_pos;
if ((field_count= net_field_length(&pos)) == 0)
{
mysql->affected_rows= net_field_length_ll(&pos);
mysql->insert_id= net_field_length_ll(&pos);
if (mysql->server_capabilities & CLIENT_TRANSACTIONS)
{
mysql->server_status=uint2korr(pos); pos+=2;
}
if (pos < mysql->net.read_pos+length && net_field_length(&pos))
mysql->info=(char*) pos;
DBUG_RETURN(0);
}
if (field_count == NULL_LENGTH) /* LOAD DATA LOCAL INFILE */
{
int error=send_file_to_server(mysql,(char*) pos);
if ((length=net_safe_read(mysql)) == packet_error || error)
DBUG_RETURN(-1);
goto get_info; /* Get info packet */
}
if (!(mysql->server_status & SERVER_STATUS_AUTOCOMMIT))
mysql->server_status|= SERVER_STATUS_IN_TRANS;
mysql->extra_info= net_field_length_ll(&pos); /* Maybe number of rec */
if (!(fields=read_rows(mysql,(MYSQL_FIELD*) 0,5)))
DBUG_RETURN(-1);
if (!(mysql->fields=unpack_fields(fields,&mysql->field_alloc,
(uint) field_count,0,
(my_bool) test(mysql->server_capabilities &
CLIENT_LONG_FLAG))))
DBUG_RETURN(-1);
mysql->status=MYSQL_STATUS_GET_RESULT;
mysql->field_count=field_count;
DBUG_RETURN(0);
}
int STDCALL
mysql_real_query(MYSQL *mysql, const char *query, uint length)
{
DBUG_ENTER("mysql_real_query");
DBUG_PRINT("enter",("handle: %lx",mysql));
DBUG_PRINT("query",("Query = \"%s\"",query));
if (simple_command(mysql,COM_QUERY,query,length,1))
DBUG_RETURN(-1);
DBUG_RETURN(mysql_read_query_result(mysql));
}
static int
send_file_to_server(MYSQL *mysql, const char *filename)
{
int fd, readcount;
char buf[IO_SIZE*15],*tmp_name;
DBUG_ENTER("send_file_to_server");
fn_format(buf,filename,"","",4); /* Convert to client format */
if (!(tmp_name=my_strdup(buf,MYF(0))))
{
strmov(mysql->net.last_error, ER(mysql->net.last_errno=CR_OUT_OF_MEMORY));
DBUG_RETURN(-1);
}
if ((fd = my_open(tmp_name,O_RDONLY, MYF(0))) < 0)
{
mysql->net.last_errno=EE_FILENOTFOUND;
sprintf(buf,EE(mysql->net.last_errno),tmp_name,errno);
strmake(mysql->net.last_error,buf,sizeof(mysql->net.last_error)-1);
my_net_write(&mysql->net,"",0); net_flush(&mysql->net);
my_free(tmp_name,MYF(0));
DBUG_RETURN(-1);
}
while ((readcount = (int) my_read(fd,buf,sizeof(buf),MYF(0))) > 0)
{
if (my_net_write(&mysql->net,buf,readcount))
{
mysql->net.last_errno=CR_SERVER_LOST;
strmov(mysql->net.last_error,ER(mysql->net.last_errno));
DBUG_PRINT("error",("Lost connection to MySQL server during LOAD DATA of local file"));
(void) my_close(fd,MYF(0));
my_free(tmp_name,MYF(0));
DBUG_RETURN(-1);
}
}
(void) my_close(fd,MYF(0));
/* Send empty packet to mark end of file */
if (my_net_write(&mysql->net,"",0) || net_flush(&mysql->net))
{
mysql->net.last_errno=CR_SERVER_LOST;
sprintf(mysql->net.last_error,ER(mysql->net.last_errno),socket_errno);
my_free(tmp_name,MYF(0));
DBUG_RETURN(-1);
}
if (readcount < 0)
{
mysql->net.last_errno=EE_READ; /* the errmsg for not entire file read */
sprintf(buf,EE(mysql->net.last_errno),tmp_name,errno);
strmake(mysql->net.last_error,buf,sizeof(mysql->net.last_error)-1);
my_free(tmp_name,MYF(0));
DBUG_RETURN(-1);
}
DBUG_RETURN(0);
}
/**************************************************************************
** Alloc result struct for buffered results. All rows are read to buffer.
** mysql_data_seek may be used.
**************************************************************************/
MYSQL_RES * STDCALL
mysql_store_result(MYSQL *mysql)
{
MYSQL_RES *result;
DBUG_ENTER("mysql_store_result");
if (!mysql->fields)
DBUG_RETURN(0);
if (mysql->status != MYSQL_STATUS_GET_RESULT)
{
strmov(mysql->net.last_error,
ER(mysql->net.last_errno=CR_COMMANDS_OUT_OF_SYNC));
DBUG_RETURN(0);
}
mysql->status=MYSQL_STATUS_READY; /* server is ready */
if (!(result=(MYSQL_RES*) my_malloc(sizeof(MYSQL_RES)+
sizeof(ulong)*mysql->field_count,
MYF(MY_WME | MY_ZEROFILL))))
{
mysql->net.last_errno=CR_OUT_OF_MEMORY;
strmov(mysql->net.last_error, ER(mysql->net.last_errno));
DBUG_RETURN(0);
}
result->eof=1; /* Marker for buffered */
result->lengths=(ulong*) (result+1);
if (!(result->data=read_rows(mysql,mysql->fields,mysql->field_count)))
{
my_free((gptr) result,MYF(0));
DBUG_RETURN(0);
}
mysql->affected_rows= result->row_count= result->data->rows;
result->data_cursor= result->data->data;
result->fields= mysql->fields;
result->field_alloc= mysql->field_alloc;
result->field_count= mysql->field_count;
result->current_field=0;
result->current_row=0; /* Must do a fetch first */
mysql->fields=0; /* fields is now in result */
DBUG_RETURN(result); /* Data fetched */
}
/**************************************************************************
** Alloc struct for use with unbuffered reads. Data is fetched by domand
** when calling to mysql_fetch_row.
** mysql_data_seek is a noop.
**
** No other queries may be specified with the same MYSQL handle.
** There shouldn't be much processing per row because mysql server shouldn't
** have to wait for the client (and will not wait more than 30 sec/packet).
**************************************************************************/
MYSQL_RES * STDCALL
mysql_use_result(MYSQL *mysql)
{
MYSQL_RES *result;
DBUG_ENTER("mysql_use_result");
if (!mysql->fields)
DBUG_RETURN(0);
if (mysql->status != MYSQL_STATUS_GET_RESULT)
{
strmov(mysql->net.last_error,
ER(mysql->net.last_errno=CR_COMMANDS_OUT_OF_SYNC));
DBUG_RETURN(0);
}
if (!(result=(MYSQL_RES*) my_malloc(sizeof(*result)+
sizeof(ulong)*mysql->field_count,
MYF(MY_WME | MY_ZEROFILL))))
DBUG_RETURN(0);
result->lengths=(ulong*) (result+1);
if (!(result->row=(MYSQL_ROW)
my_malloc(sizeof(result->row[0])*(mysql->field_count+1), MYF(MY_WME))))
{ /* Ptrs: to one row */
my_free((gptr) result,MYF(0));
DBUG_RETURN(0);
}
result->fields= mysql->fields;
result->field_alloc= mysql->field_alloc;
result->field_count= mysql->field_count;
result->current_field=0;
result->handle= mysql;
result->current_row= 0;
mysql->fields=0; /* fields is now in result */
mysql->status=MYSQL_STATUS_USE_RESULT;
DBUG_RETURN(result); /* Data is read to be fetched */
}
/**************************************************************************
** Return next field of the query results
**************************************************************************/
MYSQL_FIELD * STDCALL
mysql_fetch_field(MYSQL_RES *result)
{
if (result->current_field >= result->field_count)
return(NULL);
return &result->fields[result->current_field++];
}
/**************************************************************************
** Return next row of the query results
**************************************************************************/
MYSQL_ROW STDCALL
mysql_fetch_row(MYSQL_RES *res)
{
DBUG_ENTER("mysql_fetch_row");
if (!res->data)
{ /* Unbufferred fetch */
if (!res->eof)
{
if (!(read_one_row(res->handle,res->field_count,res->row, res->lengths)))
{
res->row_count++;
DBUG_RETURN(res->current_row=res->row);
}
else
{
DBUG_PRINT("info",("end of data"));
res->eof=1;
res->handle->status=MYSQL_STATUS_READY;
/* Don't clear handle in mysql_free_results */
res->handle=0;
}
}
DBUG_RETURN((MYSQL_ROW) NULL);
}
{
MYSQL_ROW tmp;
if (!res->data_cursor)
{
DBUG_PRINT("info",("end of data"));
DBUG_RETURN(res->current_row=(MYSQL_ROW) NULL);
}
tmp = res->data_cursor->data;
res->data_cursor = res->data_cursor->next;
DBUG_RETURN(res->current_row=tmp);
}
}
/**************************************************************************
** Get column lengths of the current row
** If one uses mysql_use_result, res->lengths contains the length information,
** else the lengths are calculated from the offset between pointers.
**************************************************************************/
ulong * STDCALL
mysql_fetch_lengths(MYSQL_RES *res)
{
ulong *lengths,*prev_length;
byte *start;
MYSQL_ROW column,end;
if (!(column=res->current_row))
return 0; /* Something is wrong */
if (res->data)
{
start=0;
prev_length=0; /* Keep gcc happy */
lengths=res->lengths;
for (end=column+res->field_count+1 ; column != end ; column++,lengths++)
{
if (!*column)
{
*lengths=0; /* Null */
continue;
}
if (start) /* Found end of prev string */
*prev_length= (uint) (*column-start-1);
start= *column;
prev_length=lengths;
}
}
return res->lengths;
}
/**************************************************************************
** Move to a specific row and column
**************************************************************************/
void STDCALL
mysql_data_seek(MYSQL_RES *result, my_ulonglong row)
{
MYSQL_ROWS *tmp=0;
DBUG_PRINT("info",("mysql_data_seek(%ld)",(long) row));
if (result->data)
for (tmp=result->data->data; row-- && tmp ; tmp = tmp->next) ;
result->current_row=0;
result->data_cursor = tmp;
}
/*************************************************************************
** put the row or field cursor one a position one got from mysql_row_tell()
** This doesn't restore any data. The next mysql_fetch_row or
** mysql_fetch_field will return the next row or field after the last used
*************************************************************************/
MYSQL_ROW_OFFSET STDCALL
mysql_row_seek(MYSQL_RES *result, MYSQL_ROW_OFFSET row)
{
MYSQL_ROW_OFFSET return_value=result->data_cursor;
result->current_row= 0;
result->data_cursor= row;
return return_value;
}
MYSQL_FIELD_OFFSET STDCALL
mysql_field_seek(MYSQL_RES *result, MYSQL_FIELD_OFFSET field_offset)
{
MYSQL_FIELD_OFFSET return_value=result->current_field;
result->current_field=field_offset;
return return_value;
}
/*****************************************************************************
** List all databases
*****************************************************************************/
MYSQL_RES * STDCALL
mysql_list_dbs(MYSQL *mysql, const char *wild)
{
char buff[255];
DBUG_ENTER("mysql_list_dbs");
append_wild(strmov(buff,"show databases"),buff+sizeof(buff),wild);
if (mysql_query(mysql,buff))
DBUG_RETURN(0);
DBUG_RETURN (mysql_store_result(mysql));
}
/*****************************************************************************
** List all tables in a database
** If wild is given then only the tables matching wild is returned
*****************************************************************************/
MYSQL_RES * STDCALL
mysql_list_tables(MYSQL *mysql, const char *wild)
{
char buff[255];
DBUG_ENTER("mysql_list_tables");
append_wild(strmov(buff,"show tables"),buff+sizeof(buff),wild);
if (mysql_query(mysql,buff))
DBUG_RETURN(0);
DBUG_RETURN (mysql_store_result(mysql));
}
/**************************************************************************
** List all fields in a table
** If wild is given then only the fields matching wild is returned
** Instead of this use query:
** show fields in 'table' like "wild"
**************************************************************************/
MYSQL_RES * STDCALL
mysql_list_fields(MYSQL *mysql, const char *table, const char *wild)
{
MYSQL_RES *result;
MYSQL_DATA *query;
char buff[257],*end;
DBUG_ENTER("mysql_list_fields");
DBUG_PRINT("enter",("table: '%s' wild: '%s'",table,wild ? wild : ""));
LINT_INIT(query);
end=strmake(strmake(buff, table,128)+1,wild ? wild : "",128);
if (simple_command(mysql,COM_FIELD_LIST,buff,(uint) (end-buff),1) ||
!(query = read_rows(mysql,(MYSQL_FIELD*) 0,6)))
DBUG_RETURN(NULL);
free_old_query(mysql);
if (!(result = (MYSQL_RES *) my_malloc(sizeof(MYSQL_RES),
MYF(MY_WME | MY_ZEROFILL))))
{
free_rows(query);
DBUG_RETURN(NULL);
}
result->field_alloc=mysql->field_alloc;
mysql->fields=0;
result->field_count = (uint) query->rows;
result->fields= unpack_fields(query,&result->field_alloc,
result->field_count,1,
(my_bool) test(mysql->server_capabilities &
CLIENT_LONG_FLAG));
result->eof=1;
DBUG_RETURN(result);
}
/* List all running processes (threads) in server */
MYSQL_RES * STDCALL
mysql_list_processes(MYSQL *mysql)
{
MYSQL_DATA *fields;
uint field_count;
uchar *pos;
DBUG_ENTER("mysql_list_processes");
LINT_INIT(fields);
if (simple_command(mysql,COM_PROCESS_INFO,0,0,0))
DBUG_RETURN(0);
free_old_query(mysql);
pos=(uchar*) mysql->net.read_pos;
field_count=(uint) net_field_length(&pos);
if (!(fields = read_rows(mysql,(MYSQL_FIELD*) 0,5)))
DBUG_RETURN(NULL);
if (!(mysql->fields=unpack_fields(fields,&mysql->field_alloc,field_count,0,
(my_bool) test(mysql->server_capabilities &
CLIENT_LONG_FLAG))))
DBUG_RETURN(0);
mysql->status=MYSQL_STATUS_GET_RESULT;
mysql->field_count=field_count;
DBUG_RETURN(mysql_store_result(mysql));
}
int STDCALL
mysql_create_db(MYSQL *mysql, const char *db)
{
DBUG_ENTER("mysql_createdb");
DBUG_PRINT("enter",("db: %s",db));
DBUG_RETURN(simple_command(mysql,COM_CREATE_DB,db, (uint) strlen(db),0));
}
int STDCALL
mysql_drop_db(MYSQL *mysql, const char *db)
{
DBUG_ENTER("mysql_drop_db");
DBUG_PRINT("enter",("db: %s",db));
DBUG_RETURN(simple_command(mysql,COM_DROP_DB,db,(uint) strlen(db),0));
}
int STDCALL
mysql_shutdown(MYSQL *mysql)
{
DBUG_ENTER("mysql_shutdown");
DBUG_RETURN(simple_command(mysql,COM_SHUTDOWN,0,0,0));
}
int STDCALL
mysql_refresh(MYSQL *mysql,uint options)
{
uchar bits[1];
DBUG_ENTER("mysql_refresh");
bits[0]= (uchar) options;
DBUG_RETURN(simple_command(mysql,COM_REFRESH,(char*) bits,1,0));
}
int STDCALL
mysql_kill(MYSQL *mysql,ulong pid)
{
char buff[12];
DBUG_ENTER("mysql_kill");
int4store(buff,pid);
DBUG_RETURN(simple_command(mysql,COM_PROCESS_KILL,buff,4,0));
}
int STDCALL
mysql_dump_debug_info(MYSQL *mysql)
{
DBUG_ENTER("mysql_dump_debug_info");
DBUG_RETURN(simple_command(mysql,COM_DEBUG,0,0,0));
}
char * STDCALL
mysql_stat(MYSQL *mysql)
{
DBUG_ENTER("mysql_stat");
if (simple_command(mysql,COM_STATISTICS,0,0,0))
return mysql->net.last_error;
mysql->net.read_pos[mysql->packet_length]=0; /* End of stat string */
if (!mysql->net.read_pos[0])
{
mysql->net.last_errno=CR_WRONG_HOST_INFO;
strmov(mysql->net.last_error, ER(mysql->net.last_errno));
return mysql->net.last_error;
}
DBUG_RETURN((char*) mysql->net.read_pos);
}
int STDCALL
mysql_ping(MYSQL *mysql)
{
DBUG_ENTER("mysql_ping");
DBUG_RETURN(simple_command(mysql,COM_PING,0,0,0));
}
char * STDCALL
mysql_get_server_info(MYSQL *mysql)
{
return((char*) mysql->server_version);
}
char * STDCALL
mysql_get_host_info(MYSQL *mysql)
{
return(mysql->host_info);
}
uint STDCALL
mysql_get_proto_info(MYSQL *mysql)
{
return (mysql->protocol_version);
}
char * STDCALL
mysql_get_client_info(void)
{
return (char*) MYSQL_SERVER_VERSION;
}
int STDCALL
mysql_options(MYSQL *mysql,enum mysql_option option, const char *arg)
{
DBUG_ENTER("mysql_option");
DBUG_PRINT("enter",("option: %d",(int) option));
switch (option) {
case MYSQL_OPT_CONNECT_TIMEOUT:
mysql->options.connect_timeout= *(uint*) arg;
break;
case MYSQL_OPT_COMPRESS:
mysql->options.compress= 1; /* Remember for connect */
break;
case MYSQL_OPT_NAMED_PIPE:
mysql->options.named_pipe=1; /* Force named pipe */
break;
case MYSQL_OPT_LOCAL_INFILE: /* Allow LOAD DATA LOCAL ?*/
if (!arg || test(*(uint*) arg))
mysql->options.client_flag|= CLIENT_LOCAL_FILES;
else
mysql->options.client_flag&= ~CLIENT_LOCAL_FILES;
break;
case MYSQL_INIT_COMMAND:
my_free(mysql->options.init_command,MYF(MY_ALLOW_ZERO_PTR));
mysql->options.init_command=my_strdup(arg,MYF(MY_WME));
break;
case MYSQL_READ_DEFAULT_FILE:
my_free(mysql->options.my_cnf_file,MYF(MY_ALLOW_ZERO_PTR));
mysql->options.my_cnf_file=my_strdup(arg,MYF(MY_WME));
break;
case MYSQL_READ_DEFAULT_GROUP:
my_free(mysql->options.my_cnf_group,MYF(MY_ALLOW_ZERO_PTR));
mysql->options.my_cnf_group=my_strdup(arg,MYF(MY_WME));
break;
case MYSQL_SET_CHARSET_DIR:
my_free(mysql->options.charset_dir,MYF(MY_ALLOW_ZERO_PTR));
mysql->options.charset_dir=my_strdup(arg,MYF(MY_WME));
break;
case MYSQL_SET_CHARSET_NAME:
my_free(mysql->options.charset_name,MYF(MY_ALLOW_ZERO_PTR));
mysql->options.charset_name=my_strdup(arg,MYF(MY_WME));
break;
default:
DBUG_RETURN(-1);
}
DBUG_RETURN(0);
}
/****************************************************************************
** Functions to get information from the MySQL structure
** These are functions to make shared libraries more usable.
****************************************************************************/
/* MYSQL_RES */
my_ulonglong STDCALL mysql_num_rows(MYSQL_RES *res)
{
return res->row_count;
}
unsigned int STDCALL mysql_num_fields(MYSQL_RES *res)
{
return res->field_count;
}
my_bool STDCALL mysql_eof(MYSQL_RES *res)
{
return res->eof;
}
MYSQL_FIELD * STDCALL mysql_fetch_field_direct(MYSQL_RES *res,uint fieldnr)
{
return &(res)->fields[fieldnr];
}
MYSQL_FIELD * STDCALL mysql_fetch_fields(MYSQL_RES *res)
{
return (res)->fields;
}
MYSQL_ROWS * STDCALL mysql_row_tell(MYSQL_RES *res)
{
return res->data_cursor;
}
uint STDCALL mysql_field_tell(MYSQL_RES *res)
{
return (res)->current_field;
}
/* MYSQL */
unsigned int STDCALL mysql_field_count(MYSQL *mysql)
{
return mysql->field_count;
}
my_ulonglong STDCALL mysql_affected_rows(MYSQL *mysql)
{
return (mysql)->affected_rows;
}
my_ulonglong STDCALL mysql_insert_id(MYSQL *mysql)
{
return (mysql)->insert_id;
}
uint STDCALL mysql_errno(MYSQL *mysql)
{
return (mysql)->net.last_errno;
}
char * STDCALL mysql_error(MYSQL *mysql)
{
return (mysql)->net.last_error;
}
char *STDCALL mysql_info(MYSQL *mysql)
{
return (mysql)->info;
}
ulong STDCALL mysql_thread_id(MYSQL *mysql)
{
return (mysql)->thread_id;
}
const char * STDCALL mysql_character_set_name(MYSQL *mysql)
{
return mysql->charset->name;
}
uint STDCALL mysql_thread_safe(void)
{
#ifdef THREAD
return 1;
#else
return 0;
#endif
}
/****************************************************************************
** Some support functions
****************************************************************************/
/*
** Add escape characters to a string (blob?) to make it suitable for a insert
** to should at least have place for length*2+1 chars
** Returns the length of the to string
*/
ulong STDCALL
mysql_escape_string(char *to,const char *from,ulong length)
{
return mysql_sub_escape_string(default_charset_info,to,from,length);
}
ulong STDCALL
mysql_real_escape_string(MYSQL *mysql, char *to,const char *from,
ulong length)
{
return mysql_sub_escape_string(mysql->charset,to,from,length);
}
static ulong
mysql_sub_escape_string(CHARSET_INFO *charset_info, char *to,
const char *from, ulong length)
{
const char *to_start=to;
const char *end;
#ifdef USE_MB
my_bool use_mb_flag=use_mb(charset_info);
#endif
for (end=from+length; from != end ; from++)
{
#ifdef USE_MB
int l;
if (use_mb_flag && (l = my_ismbchar(charset_info, from, end)))
{
while (l--)
*to++ = *from++;
from--;
continue;
}
#endif
switch (*from) {
case 0: /* Must be escaped for 'mysql' */
*to++= '\\';
*to++= '0';
break;
case '\n': /* Must be escaped for logs */
*to++= '\\';
*to++= 'n';
break;
case '\r':
*to++= '\\';
*to++= 'r';
break;
case '\\':
*to++= '\\';
*to++= '\\';
break;
case '\'':
*to++= '\\';
*to++= '\'';
break;
case '"': /* Better safe than sorry */
*to++= '\\';
*to++= '"';
break;
case '\032': /* This gives problems on Win32 */
*to++= '\\';
*to++= 'Z';
break;
default:
*to++= *from;
}
}
*to=0;
return (ulong) (to-to_start);
}
char * STDCALL
mysql_odbc_escape_string(MYSQL *mysql,
char *to, ulong to_length,
const char *from, ulong from_length,
void *param,
char * (*extend_buffer)
(void *, char *, ulong *))
{
char *to_end=to+to_length-5;
const char *end;
#ifdef USE_MB
my_bool use_mb_flag=use_mb(mysql->charset);
#endif
for (end=from+from_length; from != end ; from++)
{
if (to >= to_end)
{
to_length = (ulong) (end-from)+512; /* We want this much more */
if (!(to=(*extend_buffer)(param, to, &to_length)))
return to;
to_end=to+to_length-5;
}
#ifdef USE_MB
{
int l;
if (use_mb_flag && (l = my_ismbchar(mysql->charset, from, end)))
{
while (l--)
*to++ = *from++;
from--;
continue;
}
}
#endif
switch (*from) {
case 0: /* Must be escaped for 'mysql' */
*to++= '\\';
*to++= '0';
break;
case '\n': /* Must be escaped for logs */
*to++= '\\';
*to++= 'n';
break;
case '\r':
*to++= '\\';
*to++= 'r';
break;
case '\\':
*to++= '\\';
*to++= '\\';
break;
case '\'':
*to++= '\\';
*to++= '\'';
break;
case '"': /* Better safe than sorry */
*to++= '\\';
*to++= '"';
break;
case '\032': /* This gives problems on Win32 */
*to++= '\\';
*to++= 'Z';
break;
default:
*to++= *from;
}
}
return to;
}
void STDCALL
myodbc_remove_escape(MYSQL *mysql,char *name)
{
char *to;
#ifdef USE_MB
my_bool use_mb_flag=use_mb(mysql->charset);
char *end;
LINT_INIT(end);
if (use_mb_flag)
for (end=name; *end ; end++) ;
#endif
for (to=name ; *name ; name++)
{
#ifdef USE_MB
int l;
if (use_mb_flag && (l = my_ismbchar( mysql->charset, name , end ) ) )
{
while (l--)
*to++ = *name++;
name--;
continue;
}
#endif
if (*name == '\\' && name[1])
name++;
*to++= *name;
}
*to=0;
}
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