client.c 74.7 KB
Newer Older
1
/* Copyright (C) 2000-2003 MySQL AB
unknown's avatar
unknown committed
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

   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 */

unknown's avatar
unknown committed
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
/*
  This file is included by both libmysql.c (the MySQL client C API)
  and the mysqld server to connect to another MYSQL server.

  The differences for the two cases are:

  - Things that only works for the client:
  - Trying to automaticly determinate user name if not supplied to
    mysql_real_connect()
  - Support for reading local file with LOAD DATA LOCAL
  - SHARED memory handling
  - Protection against sigpipe
  - Prepared statements
  
  - Things that only works for the server
  - Alarm handling on connect
  
  In all other cases, the code should be idential for the client and
  server.
*/ 

unknown's avatar
unknown committed
38 39 40
#include <my_global.h>

#include "mysql.h"
unknown's avatar
SCRUM  
unknown committed
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

#ifdef EMBEDDED_LIBRARY

#undef MYSQL_SERVER

#ifndef MYSQL_CLIENT
#define MYSQL_CLIENT
#endif

#define CLI_MYSQL_REAL_CONNECT cli_mysql_real_connect

#undef net_flush
my_bool	net_flush(NET *net);

#else  /*EMBEDDED_LIBRARY*/
#define CLI_MYSQL_REAL_CONNECT mysql_real_connect
#endif /*EMBEDDED_LIBRARY*/
unknown's avatar
unknown committed
58 59 60 61 62 63 64 65 66 67 68
#include <my_sys.h>
#include <mysys_err.h>
#include <m_string.h>
#include <m_ctype.h>
#include "mysql_version.h"
#include "mysqld_error.h"
#include "errmsg.h"
#include <violite.h>
#include <assert.h>
#if defined(THREAD) && !defined(__WIN__)
#include <my_pthread.h>				/* because of signal()	*/
69
#endif /* defined(THREAD) && !defined(__WIN__) */
unknown's avatar
unknown committed
70

71
#if defined(OS2) && defined(MYSQL_SERVER)
unknown's avatar
unknown committed
72 73
#undef  ER
#define ER CER
74
#endif /* defined( OS2) && defined(MYSQL_SERVER) */
unknown's avatar
unknown committed
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107

#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 /*!defined(MSDOS) && !defined(__WIN__) */
#ifdef HAVE_SYS_UN_H
#  include <sys/un.h>
#endif

#ifndef INADDR_NONE
#define INADDR_NONE	-1
#endif
#if defined(MSDOS) || defined(__WIN__)
#define perror(A)
#else
#include <errno.h>
#define SOCKET_ERROR -1
#endif

108 109 110 111 112 113
#ifdef __WIN__
#define CONNECT_TIMEOUT 20
#else
#define CONNECT_TIMEOUT 0
#endif

unknown's avatar
unknown committed
114 115 116
#include "client_settings.h"
#include <sql_common.h>

117 118 119
uint		mysql_port=0;
char		*mysql_unix_port= 0;
const char	*unknown_sqlstate= "HY000";
unknown's avatar
unknown committed
120
const char	*not_error_sqlstate= "00000";
121 122
#ifdef HAVE_SMEM
char		 *shared_memory_base_name= 0;
123
const char 	*def_shared_memory_base_name= default_shared_memory_base_name;
unknown's avatar
unknown committed
124 125
#endif

126 127 128
static void mysql_close_free_options(MYSQL *mysql);
static void mysql_close_free(MYSQL *mysql);

unknown's avatar
unknown committed
129 130 131 132
#if !(defined(__WIN__) || defined(OS2) || defined(__NETWARE__))
static int wait_for_data(my_socket fd, uint timeout);
#endif

unknown's avatar
SCRUM  
unknown committed
133 134 135 136 137 138 139 140 141
/****************************************************************************
  A modified version of connect().  my_connect() 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,
  my_connect() will behave exactly like connect().

  Base version coded by Steve Bernacki, Jr. <steve@navinet.net>
*****************************************************************************/

unknown's avatar
unknown committed
142 143
int my_connect(my_socket fd, const struct sockaddr *name, uint namelen,
	       uint timeout)
unknown's avatar
SCRUM  
unknown committed
144 145
{
#if defined(__WIN__) || defined(OS2) || defined(__NETWARE__)
unknown's avatar
unknown committed
146
  return connect(fd, (struct sockaddr*) name, namelen);
unknown's avatar
SCRUM  
unknown committed
147 148 149 150 151 152 153 154 155
#else
  int flags, res, s_err;

  /*
    If they passed us a timeout of zero, we should behave
    exactly like the normal connect() call does.
  */

  if (timeout == 0)
unknown's avatar
unknown committed
156
    return connect(fd, (struct sockaddr*) name, namelen);
unknown's avatar
SCRUM  
unknown committed
157

unknown's avatar
unknown committed
158
  flags = fcntl(fd, F_GETFL, 0);	  /* Set socket to not block */
unknown's avatar
SCRUM  
unknown committed
159
#ifdef O_NONBLOCK
unknown's avatar
unknown committed
160
  fcntl(fd, F_SETFL, flags | O_NONBLOCK);  /* and save the flags..  */
unknown's avatar
SCRUM  
unknown committed
161 162
#endif

unknown's avatar
unknown committed
163 164 165
  res= connect(fd, (struct sockaddr*) name, namelen);
  s_err= errno;			/* Save the error... */
  fcntl(fd, F_SETFL, flags);
unknown's avatar
SCRUM  
unknown committed
166 167
  if ((res != 0) && (s_err != EINPROGRESS))
  {
unknown's avatar
unknown committed
168 169
    errno= s_err;			/* Restore it */
    return(-1);
unknown's avatar
SCRUM  
unknown committed
170 171 172
  }
  if (res == 0)				/* Connected quickly! */
    return(0);
unknown's avatar
unknown committed
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211
  return wait_for_data(fd, timeout);
#endif
}


/*
  Wait up to timeout seconds for a connection to be established.

  We prefer to do this with poll() as there is no limitations with this.
  If not, we will use select()
*/

#if !(defined(__WIN__) || defined(OS2) || defined(__NETWARE__))

static int wait_for_data(my_socket fd, uint timeout)
{
#ifdef HAVE_POLL
  struct pollfd ufds;
  int res;

  ufds.fd= fd;
  ufds.events= POLLIN | POLLPRI;
  if (!(res= poll(&ufds, 1, (int) timeout*1000)))
  {
    errno= EINTR;
    return -1;
  }
  if (res < 0 || !(ufds.revents & (POLLIN | POLLPRI)))
    return -1;
  return 0;
#else
  SOCKOPT_OPTLEN_TYPE s_err_size = sizeof(uint);
  fd_set sfds;
  struct timeval tv;
  time_t start_time, now_time;
  int res, s_err;

  if (fd >= FD_SETSIZE)				/* Check if wrong error */
    return 0;					/* Can't use timeout */
unknown's avatar
SCRUM  
unknown committed
212 213

  /*
unknown's avatar
unknown committed
214 215 216 217
    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
unknown's avatar
SCRUM  
unknown committed
218
    select() returns 1, then one of two conditions exist:
unknown's avatar
unknown committed
219
   
unknown's avatar
SCRUM  
unknown committed
220 221 222
    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.
unknown's avatar
unknown committed
223
   
unknown's avatar
SCRUM  
unknown committed
224 225 226 227 228 229
    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);
unknown's avatar
unknown committed
230
  FD_SET(fd, &sfds);
unknown's avatar
SCRUM  
unknown committed
231
  /*
unknown's avatar
unknown committed
232
    select could be interrupted by a signal, and if it is, 
unknown's avatar
SCRUM  
unknown committed
233
    the timeout should be adjusted and the select restarted
unknown's avatar
unknown committed
234
    to work around OSes that don't restart select and 
unknown's avatar
SCRUM  
unknown committed
235 236
    implementations of select that don't adjust tv upon
    failure to reflect the time remaining
unknown's avatar
unknown committed
237
   */
unknown's avatar
SCRUM  
unknown committed
238 239 240 241 242 243
  start_time = time(NULL);
  for (;;)
  {
    tv.tv_sec = (long) timeout;
    tv.tv_usec = 0;
#if defined(HPUX10) && defined(THREAD)
unknown's avatar
unknown committed
244
    if ((res = select(fd+1, NULL, (int*) &sfds, NULL, &tv)) > 0)
unknown's avatar
SCRUM  
unknown committed
245 246
      break;
#else
unknown's avatar
unknown committed
247
    if ((res = select(fd+1, NULL, &sfds, NULL, &tv)) > 0)
unknown's avatar
SCRUM  
unknown committed
248 249 250 251 252 253 254
      break;
#endif
    if (res == 0)					/* timeout */
      return -1;
    now_time=time(NULL);
    timeout-= (uint) (now_time - start_time);
    if (errno != EINTR || (int) timeout <= 0)
unknown's avatar
unknown committed
255
      return -1;
unknown's avatar
SCRUM  
unknown committed
256 257 258 259 260 261 262 263 264
  }

  /*
    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;
unknown's avatar
unknown committed
265 266
  if (getsockopt(fd, SOL_SOCKET, SO_ERROR, (char*) &s_err, &s_err_size) != 0)
    return(-1);
unknown's avatar
SCRUM  
unknown committed
267 268 269 270

  if (s_err)
  {						/* getsockopt could succeed */
    errno = s_err;
unknown's avatar
unknown committed
271
    return(-1);					/* but return an error... */
unknown's avatar
SCRUM  
unknown committed
272 273
  }
  return (0);					/* ok */
unknown's avatar
unknown committed
274
#endif /* HAVE_POLL */
unknown's avatar
SCRUM  
unknown committed
275
}
unknown's avatar
unknown committed
276 277
#endif /* defined(__WIN__) || defined(OS2) || defined(__NETWARE__) */

unknown's avatar
SCRUM  
unknown committed
278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316

/*
  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;
unknown's avatar
unknown committed
317
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
318 319 320 321 322 323 324 325
      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;
unknown's avatar
unknown committed
326
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
327 328 329 330 331 332 333 334
      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;
unknown's avatar
unknown committed
335
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
336 337 338 339 340 341 342 343 344
    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;
unknown's avatar
unknown committed
345
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
346 347 348 349 350 351 352 353 354
    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

355

356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372
/*
  Create new shared memory connection, return handler of connection

  SYNOPSIS
    create_shared_memory()
    mysql		Pointer of mysql structure
    net			Pointer of net structure
    connect_timeout	Timeout of connection
*/

#ifdef HAVE_SMEM
HANDLE create_shared_memory(MYSQL *mysql,NET *net, uint connect_timeout)
{
  ulong smem_buffer_length = shared_memory_buffer_length + 4;
  /*
    event_connect_request is event object for start connection actions
    event_connect_answer is event object for confirm, that server put data
373 374
    handle_connect_file_map is file-mapping object, use for create shared
    memory
375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403
    handle_connect_map is pointer on shared memory
    handle_map is pointer on shared memory for client
    event_server_wrote,
    event_server_read,
    event_client_wrote,
    event_client_read are events for transfer data between server and client
    handle_file_map is file-mapping object, use for create shared memory
  */
  HANDLE event_connect_request = NULL;
  HANDLE event_connect_answer = NULL;
  HANDLE handle_connect_file_map = NULL;
  char *handle_connect_map = NULL;

  char *handle_map = NULL;
  HANDLE event_server_wrote = NULL;
  HANDLE event_server_read = NULL;
  HANDLE event_client_wrote = NULL;
  HANDLE event_client_read = NULL;
  HANDLE handle_file_map = NULL;
  ulong connect_number;
  char connect_number_char[22], *p;
  char tmp[64];
  char *suffix_pos;
  DWORD error_allow = 0;
  DWORD error_code = 0;
  char *shared_memory_base_name = mysql->options.shared_memory_base_name;

  /*
    The name of event and file-mapping events create agree next rule:
unknown's avatar
unknown committed
404
    shared_memory_base_name+unique_part
405
    Where:
unknown's avatar
unknown committed
406 407
    shared_memory_base_name is unique value for each server
    unique_part is uniquel value for each object (events and file-mapping)
408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433
  */
  suffix_pos = strxmov(tmp,shared_memory_base_name,"_",NullS);
  strmov(suffix_pos, "CONNECT_REQUEST");
  if (!(event_connect_request= OpenEvent(EVENT_ALL_ACCESS,FALSE,tmp)))
  {
    error_allow = CR_SHARED_MEMORY_CONNECT_REQUEST_ERROR;
    goto err;
  }
  strmov(suffix_pos, "CONNECT_ANSWER");
  if (!(event_connect_answer= OpenEvent(EVENT_ALL_ACCESS,FALSE,tmp)))
  {
    error_allow = CR_SHARED_MEMORY_CONNECT_ANSWER_ERROR;
    goto err;
  }
  strmov(suffix_pos, "CONNECT_DATA");
  if (!(handle_connect_file_map= OpenFileMapping(FILE_MAP_WRITE,FALSE,tmp)))
  {
    error_allow = CR_SHARED_MEMORY_CONNECT_FILE_MAP_ERROR;
    goto err;
  }
  if (!(handle_connect_map= MapViewOfFile(handle_connect_file_map,
					  FILE_MAP_WRITE,0,0,sizeof(DWORD))))
  {
    error_allow = CR_SHARED_MEMORY_CONNECT_MAP_ERROR;
    goto err;
  }
unknown's avatar
unknown committed
434 435

  /* Send to server request of connection */
436 437 438 439 440
  if (!SetEvent(event_connect_request))
  {
    error_allow = CR_SHARED_MEMORY_CONNECT_SET_ERROR;
    goto err;
  }
unknown's avatar
unknown committed
441 442

  /* Wait of answer from server */
443 444 445 446 447 448
  if (WaitForSingleObject(event_connect_answer,connect_timeout*1000) !=
      WAIT_OBJECT_0)
  {
    error_allow = CR_SHARED_MEMORY_CONNECT_ABANDODED_ERROR;
    goto err;
  }
unknown's avatar
unknown committed
449 450

  /* Get number of connection */
451 452 453 454 455 456
  connect_number = uint4korr(handle_connect_map);/*WAX2*/
  p= int2str(connect_number, connect_number_char, 10);

  /*
    The name of event and file-mapping events create agree next rule:
    shared_memory_base_name+unique_part+number_of_connection
unknown's avatar
unknown committed
457

458
    Where:
unknown's avatar
unknown committed
459 460 461
    shared_memory_base_name is uniquel value for each server
    unique_part is uniquel value for each object (events and file-mapping)
    number_of_connection is number of connection between server and client
462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558
  */
  suffix_pos = strxmov(tmp,shared_memory_base_name,"_",connect_number_char,
		       "_",NullS);
  strmov(suffix_pos, "DATA");
  if ((handle_file_map = OpenFileMapping(FILE_MAP_WRITE,FALSE,tmp)) == NULL)
  {
    error_allow = CR_SHARED_MEMORY_FILE_MAP_ERROR;
    goto err2;
  }
  if ((handle_map = MapViewOfFile(handle_file_map,FILE_MAP_WRITE,0,0,
				  smem_buffer_length)) == NULL)
  {
    error_allow = CR_SHARED_MEMORY_MAP_ERROR;
    goto err2;
  }

  strmov(suffix_pos, "SERVER_WROTE");
  if ((event_server_wrote = OpenEvent(EVENT_ALL_ACCESS,FALSE,tmp)) == NULL)
  {
    error_allow = CR_SHARED_MEMORY_EVENT_ERROR;
    goto err2;
  }

  strmov(suffix_pos, "SERVER_READ");
  if ((event_server_read = OpenEvent(EVENT_ALL_ACCESS,FALSE,tmp)) == NULL)
  {
    error_allow = CR_SHARED_MEMORY_EVENT_ERROR;
    goto err2;
  }

  strmov(suffix_pos, "CLIENT_WROTE");
  if ((event_client_wrote = OpenEvent(EVENT_ALL_ACCESS,FALSE,tmp)) == NULL)
  {
    error_allow = CR_SHARED_MEMORY_EVENT_ERROR;
    goto err2;
  }

  strmov(suffix_pos, "CLIENT_READ");
  if ((event_client_read = OpenEvent(EVENT_ALL_ACCESS,FALSE,tmp)) == NULL)
  {
    error_allow = CR_SHARED_MEMORY_EVENT_ERROR;
    goto err2;
  }
  /*
    Set event that server should send data
  */
  SetEvent(event_server_read);

err2:
  if (error_allow == 0)
  {
    net->vio= vio_new_win32shared_memory(net,handle_file_map,handle_map,
					 event_server_wrote,
                                         event_server_read,event_client_wrote,
					 event_client_read);
  }
  else
  {
    error_code = GetLastError();
    if (event_server_read)
      CloseHandle(event_server_read);
    if (event_server_wrote)
      CloseHandle(event_server_wrote);
    if (event_client_read)
      CloseHandle(event_client_read);
    if (event_client_wrote)
      CloseHandle(event_client_wrote);
    if (handle_map)
      UnmapViewOfFile(handle_map);
    if (handle_file_map)
      CloseHandle(handle_file_map);
  }
err:
  if (error_allow)
    error_code = GetLastError();
  if (event_connect_request)
    CloseHandle(event_connect_request);
  if (event_connect_answer)
    CloseHandle(event_connect_answer);
  if (handle_connect_map)
    UnmapViewOfFile(handle_connect_map);
  if (handle_connect_file_map)
    CloseHandle(handle_connect_file_map);
  if (error_allow)
  {
    net->last_errno=error_allow;
    strmov(net->sqlstate, unknown_sqlstate);
    if (error_allow == CR_SHARED_MEMORY_EVENT_ERROR)
      sprintf(net->last_error,ER(net->last_errno),suffix_pos,error_code);
    else
      sprintf(net->last_error,ER(net->last_errno),error_code);
    return(INVALID_HANDLE_VALUE);
  }
  return(handle_map);
}
#endif

unknown's avatar
SCRUM  
unknown committed
559 560 561 562 563 564 565 566 567 568
/*****************************************************************************
  Read a packet from server. Give error message if socket was down
  or packet is an error message
*****************************************************************************/

ulong
net_safe_read(MYSQL *mysql)
{
  NET *net= &mysql->net;
  ulong len=0;
unknown's avatar
unknown committed
569
  init_sigpipe_variables
unknown's avatar
SCRUM  
unknown committed
570 571 572 573 574 575 576 577 578 579 580

  /* 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));
unknown's avatar
unknown committed
581
#ifdef MYSQL_SERVER
582
    if (vio_errno(net->vio) == SOCKET_EINTR)
unknown's avatar
unknown committed
583 584
      return (packet_error);
#endif /*MYSQL_SERVER*/
unknown's avatar
SCRUM  
unknown committed
585 586 587 588 589
    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));
unknown's avatar
unknown committed
590
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
591 592 593 594 595 596 597 598 599 600
    return (packet_error);
  }
  if (net->read_pos[0] == 255)
  {
    if (len > 3)
    {
      char *pos=(char*) net->read_pos+1;
      net->last_errno=uint2korr(pos);
      pos+=2;
      len-=2;
unknown's avatar
unknown committed
601 602 603 604 605
      if (protocol_41(mysql) && pos[0] == '#')
      {
	strmake(net->sqlstate, pos+1, SQLSTATE_LENGTH);
	pos+= SQLSTATE_LENGTH+1;
      }
unknown's avatar
SCRUM  
unknown committed
606 607 608 609 610 611
      (void) strmake(net->last_error,(char*) pos,
		     min((uint) len,(uint) sizeof(net->last_error)-1));
    }
    else
    {
      net->last_errno=CR_UNKNOWN_ERROR;
unknown's avatar
unknown committed
612 613
      strmov(net->sqlstate, unknown_sqlstate);
      strmov(net->last_error,ER(net->last_errno));
unknown's avatar
SCRUM  
unknown committed
614
    }
unknown's avatar
unknown committed
615 616
    DBUG_PRINT("error",("Got error: %d/%s (%s)",
			net->last_errno, net->sqlstate, net->last_error));
unknown's avatar
SCRUM  
unknown committed
617 618 619 620 621
    return(packet_error);
  }
  return len;
}

unknown's avatar
unknown committed
622
void free_rows(MYSQL_DATA *cur)
unknown's avatar
SCRUM  
unknown committed
623 624 625 626 627 628 629 630
{
  if (cur)
  {
    free_root(&cur->alloc,MYF(0));
    my_free((gptr) cur,MYF(0));
  }
}

unknown's avatar
unknown committed
631
my_bool
unknown's avatar
SCRUM  
unknown committed
632
cli_advanced_command(MYSQL *mysql, enum enum_server_command command,
unknown's avatar
SCRUM  
unknown committed
633 634
		     const char *header, ulong header_length,
		     const char *arg, ulong arg_length, my_bool skip_check)
unknown's avatar
SCRUM  
unknown committed
635 636 637
{
  NET *net= &mysql->net;
  my_bool result= 1;
unknown's avatar
unknown committed
638
  init_sigpipe_variables
unknown's avatar
SCRUM  
unknown committed
639 640 641 642 643 644 645 646 647 648 649 650

  /* 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))
      return 1;
  }
  if (mysql->status != MYSQL_STATUS_READY)
  {
    strmov(net->last_error,ER(mysql->net.last_errno=CR_COMMANDS_OUT_OF_SYNC));
unknown's avatar
unknown committed
651
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
652 653 654
    return 1;
  }

unknown's avatar
unknown committed
655
  net->last_error[0]=0;
unknown's avatar
unknown committed
656 657
  net->last_errno= 0;
  strmov(net->sqlstate, not_error_sqlstate);
unknown's avatar
SCRUM  
unknown committed
658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688
  mysql->net.report_error=0;
  mysql->info=0;
  mysql->affected_rows= ~(my_ulonglong) 0;
  net_clear(&mysql->net);			/* Clear receive buffer */

  if (net_write_command(net,(uchar) command, header, header_length,
			arg, arg_length))
  {
    DBUG_PRINT("error",("Can't send command to server. Error: %d",
			socket_errno));
    if (net->last_errno == ER_NET_PACKET_TOO_LARGE)
    {
      net->last_errno=CR_NET_PACKET_TOO_LARGE;
      strmov(net->last_error,ER(net->last_errno));
      goto end;
    }
    end_server(mysql);
    if (mysql_reconnect(mysql))
      goto end;
    if (net_write_command(net,(uchar) command, header, header_length,
			  arg, arg_length))
    {
      net->last_errno=CR_SERVER_GONE_ERROR;
      strmov(net->last_error,ER(net->last_errno));
      goto end;
    }
  }
  result=0;
  if (!skip_check)
    result= ((mysql->packet_length=net_safe_read(mysql)) == packet_error ?
	     1 : 0);
unknown's avatar
unknown committed
689
end:
unknown's avatar
SCRUM  
unknown committed
690 691 692 693
  reset_sigpipe(mysql);
  return result;
}

unknown's avatar
unknown committed
694
void free_old_query(MYSQL *mysql)
unknown's avatar
SCRUM  
unknown committed
695 696 697 698
{
  DBUG_ENTER("free_old_query");
  if (mysql->fields)
    free_root(&mysql->field_alloc,MYF(0));
699
  init_alloc_root(&mysql->field_alloc,8192,0); /* Assume rowlength < 8192 */
unknown's avatar
SCRUM  
unknown committed
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721
  mysql->fields=0;
  mysql->field_count=0;				/* For API */
  DBUG_VOID_RETURN;
}

#ifdef __WIN__
static my_bool is_NT(void)
{
  char *os=getenv("OS");
  return (os && !strcmp(os, "Windows_NT")) ? 1 : 0;
}
#endif

/**************************************************************************
  Shut down connection
**************************************************************************/

void end_server(MYSQL *mysql)
{
  DBUG_ENTER("end_server");
  if (mysql->net.vio != 0)
  {
unknown's avatar
unknown committed
722
    init_sigpipe_variables
unknown's avatar
SCRUM  
unknown committed
723 724 725 726 727 728 729 730 731 732 733
    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;
}

734

unknown's avatar
SCRUM  
unknown committed
735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
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 where read; Ignoring rows"));
      for (;;)
      {
	ulong pkt_len;
	if ((pkt_len=net_safe_read(result->handle)) == packet_error)
	  break;
	if (pkt_len <= 8 && result->handle->net.read_pos[0] == 254)
751 752 753 754 755 756 757
	{
	  if (protocol_41(result->handle))
	  {
	    char *pos= (char*) result->handle->net.read_pos;
	    result->handle->warning_count=uint2korr(pos); pos+=2;
	    result->handle->server_status=uint2korr(pos); pos+=2;
	  }
unknown's avatar
SCRUM  
unknown committed
758
	  break;				/* End of data */
759
	}
unknown's avatar
SCRUM  
unknown committed
760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784
      }
      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-sets-dir", "default-character-set", "interactive-timeout",
  "connect-timeout", "local-infile", "disable-local-infile",
  "replication-probe", "enable-reads-from-master", "repl-parse-query",
unknown's avatar
unknown committed
785
  "ssl-cipher", "max-allowed-packet", "protocol", "shared-memory-base-name",
unknown's avatar
unknown committed
786
  "multi-results", "multi-queries", "secure-auth",
unknown's avatar
SCRUM  
unknown committed
787 788 789 790 791 792
  NullS
};

static TYPELIB option_types={array_elements(default_options)-1,
			     "options",default_options};

793 794 795 796 797
const char *sql_protocol_names_lib[] =
{ "TCP", "SOCKET", "PIPE", "MEMORY", NullS };
TYPELIB sql_protocol_typelib = {array_elements(sql_protocol_names_lib)-1,"",
				sql_protocol_names_lib};

unknown's avatar
SCRUM  
unknown committed
798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818
static int add_init_command(struct st_mysql_options *options, const char *cmd)
{
  char *tmp;

  if (!options->init_commands)
  {
    options->init_commands= (DYNAMIC_ARRAY*)my_malloc(sizeof(DYNAMIC_ARRAY),
						      MYF(MY_WME));
    init_dynamic_array(options->init_commands,sizeof(char*),0,5 CALLER_INFO);
  }

  if (!(tmp= my_strdup(cmd,MYF(MY_WME))) ||
      insert_dynamic(options->init_commands, (gptr)&tmp))
  {
    my_free(tmp, MYF(MY_ALLOW_ZERO_PTR));
    return 1;
  }

  return 0;
}

unknown's avatar
SCRUM  
unknown committed
819 820
void mysql_read_default_options(struct st_mysql_options *options,
				const char *filename,const char *group)
unknown's avatar
SCRUM  
unknown committed
821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904
{
  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;
	  options->client_flag|= CLIENT_COMPRESS;
	  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:
          options->protocol = MYSQL_PROTOCOL_PIPE;
	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 */
	  add_init_command(options,opt_arg);
	  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 */
905
#ifdef MYSQL_CLIENT
unknown's avatar
SCRUM  
unknown committed
906 907
	  mysql_debug(opt_arg ? opt_arg : "d:t:o,/tmp/client.trace");
	  break;
unknown's avatar
unknown committed
908
#endif
unknown's avatar
SCRUM  
unknown committed
909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
	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;
	case 23:  /* replication probe */
957
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
958
	  options->rpl_probe= 1;
959
#endif
unknown's avatar
SCRUM  
unknown committed
960 961 962 963 964
	  break;
	case 24: /* enable-reads-from-master */
	  options->no_master_reads= 0;
	  break;
	case 25: /* repl-parse-query */
965
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
966
	  options->rpl_parse= 1;
967
#endif
unknown's avatar
SCRUM  
unknown committed
968 969 970 971 972
	  break;
	case 27:
	  options->max_allowed_packet= atoi(opt_arg);
	  break;
        case 28:		/* protocol */
973 974 975
          if ((options->protocol = find_type(opt_arg,
					     &sql_protocol_typelib,0))
	      == ~(ulong) 0)
unknown's avatar
SCRUM  
unknown committed
976 977 978 979 980 981 982 983 984 985 986 987
          {
            fprintf(stderr, "Unknown option to protocol: %s\n", opt_arg);
            exit(1);
          }
          break;
        case 29:		/* shared_memory_base_name */
#ifdef HAVE_SMEM
          if (options->shared_memory_base_name != def_shared_memory_base_name)
            my_free(options->shared_memory_base_name,MYF(MY_ALLOW_ZERO_PTR));
          options->shared_memory_base_name=my_strdup(opt_arg,MYF(MY_WME));
#endif
          break;
unknown's avatar
unknown committed
988 989 990 991
	case 30:
	  options->client_flag|= CLIENT_MULTI_RESULTS;
	  break;
	case 31:
992
	  options->client_flag|= CLIENT_MULTI_STATEMENTS | CLIENT_MULTI_RESULTS;
unknown's avatar
unknown committed
993
	  break;
unknown's avatar
unknown committed
994 995 996
        case 32: /* secure-auth */
          options->secure_auth= TRUE;
          break;
unknown's avatar
SCRUM  
unknown committed
997 998 999 1000 1001 1002 1003 1004 1005 1006
	default:
	  DBUG_PRINT("warning",("unknown option: %s",option[0]));
	}
      }
    }
  }
  free_defaults(argv);
  DBUG_VOID_RETURN;
}

1007

unknown's avatar
SCRUM  
unknown committed
1008 1009 1010 1011 1012 1013
/**************************************************************************
  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.
**************************************************************************/

unknown's avatar
unknown committed
1014 1015
static void cli_fetch_lengths(ulong *to, MYSQL_ROW column,
			      unsigned int field_count)
unknown's avatar
SCRUM  
unknown committed
1016
{ 
1017 1018
  ulong *prev_length;
  byte *start=0;
unknown's avatar
SCRUM  
unknown committed
1019
  MYSQL_ROW end;
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033

  prev_length=0;				/* Keep gcc happy */
  for (end=column + field_count + 1 ; column != end ; column++, to++)
  {
    if (!*column)
    {
      *to= 0;					/* Null */
      continue;
    }
    if (start)					/* Found end of prev string */
      *prev_length= (ulong) (*column-start-1);
    start= *column;
    prev_length= to;
  }
unknown's avatar
SCRUM  
unknown committed
1034 1035 1036 1037 1038 1039
}

/***************************************************************************
  Change field rows to field structs
***************************************************************************/

unknown's avatar
unknown committed
1040
MYSQL_FIELD *
unknown's avatar
SCRUM  
unknown committed
1041 1042 1043 1044 1045
unpack_fields(MYSQL_DATA *data,MEM_ROOT *alloc,uint fields,
	      my_bool default_value, uint server_capabilities)
{
  MYSQL_ROWS	*row;
  MYSQL_FIELD	*field,*result;
unknown's avatar
unknown committed
1046
  ulong lengths[9];				/* Max of fields */
unknown's avatar
SCRUM  
unknown committed
1047 1048
  DBUG_ENTER("unpack_fields");

1049 1050
  field= result= (MYSQL_FIELD*) alloc_root(alloc,
					   (uint) sizeof(*field)*fields);
unknown's avatar
SCRUM  
unknown committed
1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062
  if (!result)
  {
    free_rows(data);				/* Free old data */
    DBUG_RETURN(0);
  }
  bzero((char*) field, (uint) sizeof(MYSQL_FIELD)*fields);
  if (server_capabilities & CLIENT_PROTOCOL_41)
  {
    /* server is 4.1, and returns the new field result format */
    for (row=data->data; row ; row = row->next,field++)
    {
      uchar *pos;
1063
      cli_fetch_lengths(&lengths[0], row->data, default_value ? 8 : 7);
unknown's avatar
unknown committed
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076
      field->catalog  = strdup_root(alloc,(char*) row->data[0]);
      field->db       = strdup_root(alloc,(char*) row->data[1]);
      field->table    = strdup_root(alloc,(char*) row->data[2]);
      field->org_table= strdup_root(alloc,(char*) row->data[3]);
      field->name     = strdup_root(alloc,(char*) row->data[4]);
      field->org_name = strdup_root(alloc,(char*) row->data[5]);

      field->catalog_length=	lengths[0];
      field->db_length=		lengths[1];
      field->table_length=	lengths[2];
      field->org_table_length=	lengths[3];
      field->name_length=	lengths[4];
      field->org_name_length=	lengths[5];
unknown's avatar
SCRUM  
unknown committed
1077 1078

      /* Unpack fixed length parts */
unknown's avatar
unknown committed
1079
      pos= (uchar*) row->data[6];
unknown's avatar
SCRUM  
unknown committed
1080
      field->charsetnr= uint2korr(pos);
unknown's avatar
unknown committed
1081 1082 1083 1084
      field->length=	(uint) uint4korr(pos+2);
      field->type=	(enum enum_field_types) pos[6];
      field->flags=	uint2korr(pos+7);
      field->decimals=  (uint) pos[9];
unknown's avatar
SCRUM  
unknown committed
1085 1086 1087

      if (INTERNAL_NUM_FIELD(field))
        field->flags|= NUM_FLAG;
unknown's avatar
unknown committed
1088
      if (default_value && row->data[7])
unknown's avatar
SCRUM  
unknown committed
1089
      {
unknown's avatar
unknown committed
1090 1091
        field->def=strdup_root(alloc,(char*) row->data[7]);
	field->def_length= lengths[7];
unknown's avatar
SCRUM  
unknown committed
1092 1093 1094 1095 1096 1097 1098 1099
      }
      else
        field->def=0;
      field->max_length= 0;
    }
  }
#ifndef DELETE_SUPPORT_OF_4_0_PROTOCOL
  else
1100 1101 1102 1103
  {
    /* old protocol, for backward compatibility */
    for (row=data->data; row ; row = row->next,field++)
    {
1104
      cli_fetch_lengths(&lengths[0], row->data, default_value ? 6 : 5);
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
      field->org_table= 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];

      field->catalog=(char*)  "";
      field->db=     (char*)  "";
      field->catalog_length= 0;
      field->db_length= 0;
      field->org_table_length=	field->table_length=	lengths[0];
      field->name_length=	lengths[1];

      if (server_capabilities & CLIENT_LONG_FLAG)
      {
        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]);
	field->def_length= lengths[5];
      }
      else
        field->def=0;
      field->max_length= 0;
    }
  }
unknown's avatar
SCRUM  
unknown committed
1139 1140 1141 1142 1143 1144 1145
#endif /* DELETE_SUPPORT_OF_4_0_PROTOCOL */
  free_rows(data);				/* Free old data */
  DBUG_RETURN(result);
}

/* Read all rows (fields or data) from server */

unknown's avatar
unknown committed
1146 1147
MYSQL_DATA *cli_read_rows(MYSQL *mysql,MYSQL_FIELD *mysql_fields,
			  unsigned int fields)
unknown's avatar
SCRUM  
unknown committed
1148 1149 1150 1151 1152 1153 1154 1155 1156
{
  uint	field;
  ulong pkt_len;
  ulong len;
  uchar *cp;
  char	*to, *end_to;
  MYSQL_DATA *result;
  MYSQL_ROWS **prev_ptr,*cur;
  NET *net = &mysql->net;
unknown's avatar
SCRUM  
unknown committed
1157
  DBUG_ENTER("cli_read_rows");
unknown's avatar
SCRUM  
unknown committed
1158 1159 1160 1161 1162 1163 1164

  if ((pkt_len= 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;
unknown's avatar
unknown committed
1165
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
    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;

  /*
    The last EOF packet is either a single 254 character or (in MySQL 4.1)
    254 followed by 1-7 status bytes.

    This doesn't conflict with normal usage of 254 which stands for a
    string where the length of the string is 8 bytes. (see net_field_length())
  */

  while (*(cp=net->read_pos) != 254 || pkt_len >= 8)
  {
    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;
unknown's avatar
unknown committed
1194
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214
      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 > (ulong) (end_to - to))
        {
          free_rows(result);
          net->last_errno=CR_MALFORMED_PACKET;
unknown's avatar
unknown committed
1215
	  strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239
          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 */
  if (pkt_len > 1)				/* MySQL 4.1 protocol */
  {
    mysql->warning_count= uint2korr(cp+1);
1240
    mysql->server_status= uint2korr(cp+3);
unknown's avatar
SCRUM  
unknown committed
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
    DBUG_PRINT("info",("warning_count:  %ld", mysql->warning_count));
  }
  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;
unknown's avatar
unknown committed
1258 1259
  uchar *pos, *prev_pos, *end_pos;
  NET *net= &mysql->net;
unknown's avatar
SCRUM  
unknown committed
1260 1261 1262

  if ((pkt_len=net_safe_read(mysql)) == packet_error)
    return -1;
unknown's avatar
unknown committed
1263
  if (pkt_len <= 8 && net->read_pos[0] == 254)
unknown's avatar
SCRUM  
unknown committed
1264 1265
  {
    if (pkt_len > 1)				/* MySQL 4.1 protocol */
1266
    {
unknown's avatar
unknown committed
1267
      mysql->warning_count= uint2korr(net->read_pos+1);
1268 1269
      mysql->server_status= uint2korr(net->read_pos+3);
    }
unknown's avatar
SCRUM  
unknown committed
1270 1271 1272
    return 1;				/* End of data */
  }
  prev_pos= 0;				/* allowed to write at packet[-1] */
unknown's avatar
unknown committed
1273
  pos=net->read_pos;
unknown's avatar
SCRUM  
unknown committed
1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
  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 > (ulong) (end_pos - pos))
      {
unknown's avatar
unknown committed
1286 1287 1288
        net->last_errno=CR_UNKNOWN_ERROR;
        strmov(net->last_error,ER(net->last_errno));
	strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320
        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;
  }
  else
    bzero((char*) (mysql),sizeof(*(mysql)));
1321 1322
  mysql->options.connect_timeout= CONNECT_TIMEOUT;
  mysql->last_used_con= mysql->next_slave= mysql->master = mysql;
unknown's avatar
SCRUM  
unknown committed
1323 1324 1325 1326
  /*
    By default, we are a replication pivot. The caller must reset it
    after we return if this is not the case.
  */
1327
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
1328
  mysql->rpl_pivot = 1;
1329
#endif
unknown's avatar
SCRUM  
unknown committed
1330

1331 1332 1333 1334 1335
  /*
    Only enable LOAD DATA INFILE by default if configured with
    --enable-local-infile
  */
#if defined(ENABLED_LOCAL_INFILE) && !defined(MYSQL_SERVER)
unknown's avatar
SCRUM  
unknown committed
1336 1337 1338
  mysql->options.client_flag|= CLIENT_LOCAL_FILES;
#endif
#ifdef HAVE_SMEM
1339
  mysql->options.shared_memory_base_name= (char*) def_shared_memory_base_name;
unknown's avatar
SCRUM  
unknown committed
1340
#endif
unknown's avatar
SCRUM  
unknown committed
1341
  mysql->options.methods_to_use= MYSQL_OPT_GUESS_CONNECTION;
unknown's avatar
SCRUM  
unknown committed
1342 1343 1344 1345 1346
  return mysql;
}


/*
1347 1348
  Fill in SSL part of MYSQL structure and set 'use_ssl' flag.
  NB! Errors are not reported until you do mysql_real_connect.
unknown's avatar
SCRUM  
unknown committed
1349 1350
*/

1351 1352 1353 1354 1355 1356 1357 1358 1359
#define strdup_if_not_null(A) (A) == 0 ? 0 : my_strdup((A),MYF(MY_WME))

my_bool STDCALL
mysql_ssl_set(MYSQL *mysql __attribute__((unused)) ,
	      const char *key __attribute__((unused)),
	      const char *cert __attribute__((unused)),
	      const char *ca __attribute__((unused)),
	      const char *capath __attribute__((unused)),
	      const char *cipher __attribute__((unused)))
unknown's avatar
SCRUM  
unknown committed
1360
{
1361 1362 1363 1364 1365 1366 1367 1368 1369
#ifdef HAVE_OPENSSL
  mysql->options.ssl_key=    strdup_if_not_null(key);
  mysql->options.ssl_cert=   strdup_if_not_null(cert);
  mysql->options.ssl_ca=     strdup_if_not_null(ca);
  mysql->options.ssl_capath= strdup_if_not_null(capath);
  mysql->options.ssl_cipher= strdup_if_not_null(cipher);
#endif /* HAVE_OPENSSL */
  return 0;
}
unknown's avatar
SCRUM  
unknown committed
1370 1371


1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393
/*
  Free strings in the SSL structure and clear 'use_ssl' flag.
  NB! Errors are not reported until you do mysql_real_connect.
*/

#ifdef HAVE_OPENSSL
static void
mysql_ssl_free(MYSQL *mysql __attribute__((unused)))
{
  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));
  my_free(mysql->options.ssl_cipher, MYF(MY_ALLOW_ZERO_PTR));
  my_free(mysql->connector_fd,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.ssl_cipher= 0;
  mysql->options.use_ssl = FALSE;
  mysql->connector_fd = 0;
unknown's avatar
SCRUM  
unknown committed
1394
}
1395
#endif /* HAVE_OPENSSL */
unknown's avatar
SCRUM  
unknown committed
1396 1397 1398 1399 1400 1401 1402


/*
  Note that the mysql argument must be initialized with mysql_init()
  before calling mysql_real_connect !
*/

unknown's avatar
unknown committed
1403 1404
static my_bool cli_mysql_read_query_result(MYSQL *mysql);
static MYSQL_RES *cli_mysql_use_result(MYSQL *mysql);
unknown's avatar
SCRUM  
unknown committed
1405 1406 1407 1408 1409

static MYSQL_METHODS client_methods=
{
  cli_mysql_read_query_result,
  cli_advanced_command,
unknown's avatar
SCRUM  
unknown committed
1410
  cli_read_rows,
1411
  cli_mysql_use_result,
unknown's avatar
SCRUM  
unknown committed
1412 1413 1414
  cli_fetch_lengths
#ifndef MYSQL_SERVER
  ,cli_list_fields,
unknown's avatar
SCRUM  
unknown committed
1415
  cli_read_prepare_result,
unknown's avatar
unknown committed
1416
  cli_stmt_execute,
unknown's avatar
SCRUM  
unknown committed
1417
  cli_read_binary_rows,
unknown's avatar
SCRUM  
unknown committed
1418
  cli_unbuffered_fetch,
unknown's avatar
unknown committed
1419 1420
  NULL,
  cli_read_statistic
unknown's avatar
SCRUM  
unknown committed
1421
#endif
unknown's avatar
SCRUM  
unknown committed
1422 1423 1424 1425 1426 1427
};

MYSQL * STDCALL 
CLI_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)
unknown's avatar
SCRUM  
unknown committed
1428
{
1429 1430
  char		buff[NAME_LEN+USERNAME_LENGTH+100],charset_name_buff[16];
  char		*end,*host_info,*charset_name;
unknown's avatar
SCRUM  
unknown committed
1431
  my_socket	sock;
1432
  in_addr_t	ip_addr;
unknown's avatar
SCRUM  
unknown committed
1433 1434 1435
  struct	sockaddr_in sock_addr;
  ulong		pkt_length;
  NET		*net= &mysql->net;
unknown's avatar
unknown committed
1436
  uint		charset_number;
unknown's avatar
unknown committed
1437
#ifdef MYSQL_SERVER
unknown's avatar
SCRUM  
unknown committed
1438 1439 1440 1441 1442 1443 1444 1445 1446
  thr_alarm_t   alarmed;
  ALARM		alarm_buff;
#endif
#ifdef __WIN__
  HANDLE	hPipe=INVALID_HANDLE_VALUE;
#endif
#ifdef HAVE_SYS_UN_H
  struct	sockaddr_un UNIXaddr;
#endif
unknown's avatar
SCRUM  
unknown committed
1447

unknown's avatar
unknown committed
1448
  init_sigpipe_variables
unknown's avatar
SCRUM  
unknown committed
1449 1450 1451 1452 1453 1454 1455 1456 1457
  DBUG_ENTER("mysql_real_connect");
  LINT_INIT(host_info);

  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 */
unknown's avatar
SCRUM  
unknown committed
1458
  mysql->methods= &client_methods;
unknown's avatar
SCRUM  
unknown committed
1459 1460
  set_sigpipe(mysql);
  net->vio = 0;				/* If something goes wrong */
unknown's avatar
unknown committed
1461
  mysql->client_flag=0;			/* For handshake */
unknown's avatar
SCRUM  
unknown committed
1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478

  /* 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])
unknown's avatar
unknown committed
1479
  {
unknown's avatar
SCRUM  
unknown committed
1480
    user=mysql->options.user;
unknown's avatar
unknown committed
1481 1482 1483
    if (!user)
      user= "";
  }
unknown's avatar
SCRUM  
unknown committed
1484 1485 1486
  if (!passwd)
  {
    passwd=mysql->options.password;
1487
#if !defined(DONT_USE_MYSQL_PWD) && !defined(MYSQL_SERVER)
unknown's avatar
SCRUM  
unknown committed
1488 1489 1490
    if (!passwd)
      passwd=getenv("MYSQL_PWD");		/* get it from environment */
#endif
unknown's avatar
unknown committed
1491 1492
    if (!passwd)
      passwd= "";
unknown's avatar
SCRUM  
unknown committed
1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504
  }
  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;

  /*
1505
    Part 0: Grab a socket and connect it to the server
unknown's avatar
SCRUM  
unknown committed
1506
  */
1507
#if defined(HAVE_SMEM)
unknown's avatar
SCRUM  
unknown committed
1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532
  if ((!mysql->options.protocol ||
       mysql->options.protocol == MYSQL_PROTOCOL_MEMORY) &&
      (!host || !strcmp(host,LOCAL_HOST)))
  {
    if ((create_shared_memory(mysql,net, mysql->options.connect_timeout)) ==
	INVALID_HANDLE_VALUE)
    {
      DBUG_PRINT("error",
		 ("host: '%s'  socket: '%s'  shared memory: %s  have_tcpip: %d",
		  host ? host : "<null>",
		  unix_socket ? unix_socket : "<null>",
		  (int) mysql->options.shared_memory_base_name,
		  (int) have_tcpip));
      if (mysql->options.protocol == MYSQL_PROTOCOL_MEMORY)
	goto error;
      /* Try also with PIPE or TCP/IP */
    }
    else
    {
      mysql->options.protocol=MYSQL_PROTOCOL_MEMORY;
      sock=0;
      unix_socket = 0;
      host=mysql->options.shared_memory_base_name;
      host_info=(char*) ER(CR_SHARED_MEMORY_CONNECTION);
    }
1533
  }
unknown's avatar
SCRUM  
unknown committed
1534 1535
#endif /* HAVE_SMEM */
#if defined(HAVE_SYS_UN_H)
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547
  if (!net->vio &&
      (!mysql->options.protocol ||
       mysql->options.protocol == MYSQL_PROTOCOL_SOCKET) &&
      (unix_socket || mysql_unix_port) &&
      (!host || !strcmp(host,LOCAL_HOST)))
  {
    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)
unknown's avatar
SCRUM  
unknown committed
1548
    {
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588
      net->last_errno=CR_SOCKET_CREATE_ERROR;
      strmov(net->sqlstate, unknown_sqlstate);
      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;
    strmake(UNIXaddr.sun_path, unix_socket, sizeof(UNIXaddr.sun_path)-1);
    if (my_connect(sock,(struct sockaddr *) &UNIXaddr, sizeof(UNIXaddr),
		   mysql->options.connect_timeout))
    {
      DBUG_PRINT("error",("Got error %d on connect to local server",
			  socket_errno));
      net->last_errno=CR_CONNECTION_ERROR;
      strmov(net->sqlstate, unknown_sqlstate);
      sprintf(net->last_error,ER(net->last_errno),unix_socket,socket_errno);
      goto error;
    }
    mysql->options.protocol=MYSQL_PROTOCOL_SOCKET;
  }
#elif defined(__WIN__)
  if (!net->vio &&
      (mysql->options.protocol == MYSQL_PROTOCOL_PIPE ||
       (host && !strcmp(host,LOCAL_HOST_NAMEDPIPE)) ||
       (! have_tcpip && (unix_socket || !host && is_NT()))))
  {
    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'  have_tcpip: %d",
		  host ? host : "<null>",
		  unix_socket ? unix_socket : "<null>",
		  (int) have_tcpip));
      if (mysql->options.protocol == MYSQL_PROTOCOL_PIPE ||
	  (host && !strcmp(host,LOCAL_HOST_NAMEDPIPE)) ||
	  (unix_socket && !strcmp(unix_socket,MYSQL_NAMEDPIPE)))
unknown's avatar
SCRUM  
unknown committed
1589
	goto error;
1590
      /* Try also with TCP/IP */
unknown's avatar
SCRUM  
unknown committed
1591 1592 1593
    }
    else
    {
1594 1595 1596
      net->vio=vio_new_win32pipe(hPipe);
      sprintf(host_info=buff, ER(CR_NAMEDPIPE_CONNECTION), host,
	      unix_socket);
unknown's avatar
SCRUM  
unknown committed
1597
    }
1598
  }
unknown's avatar
SCRUM  
unknown committed
1599
#endif
1600 1601 1602
  if (!net->vio &&
      (!mysql->options.protocol ||
       mysql->options.protocol == MYSQL_PROTOCOL_TCP))
unknown's avatar
SCRUM  
unknown committed
1603 1604 1605 1606 1607 1608 1609 1610
  {
    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));
unknown's avatar
unknown committed
1611
#ifdef MYSQL_SERVER
unknown's avatar
SCRUM  
unknown committed
1612
    thr_alarm_init(&alarmed);
unknown's avatar
unknown committed
1613
    thr_alarm(&alarmed, mysql->options.connect_timeout, &alarm_buff);
unknown's avatar
SCRUM  
unknown committed
1614
#endif
1615
    /* _WIN64 ;  Assume that the (int) range is enough for socket() */
unknown's avatar
SCRUM  
unknown committed
1616
    sock = (my_socket) socket(AF_INET,SOCK_STREAM,0);
unknown's avatar
unknown committed
1617
#ifdef MYSQL_SERVER
unknown's avatar
SCRUM  
unknown committed
1618 1619 1620 1621 1622
    thr_end_alarm(&alarmed);
#endif
    if (sock == SOCKET_ERROR)
    {
      net->last_errno=CR_IPSOCK_ERROR;
unknown's avatar
unknown committed
1623
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649
      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
    {
      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)
      {
	my_gethostbyname_r_free();
	net->last_errno=CR_UNKNOWN_HOST;
unknown's avatar
unknown committed
1650
	strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
	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);
      my_gethostbyname_r_free();
    }
    sock_addr.sin_port = (ushort) htons((ushort) port);
    if (my_connect(sock,(struct sockaddr *) &sock_addr, sizeof(sock_addr),
		   mysql->options.connect_timeout))
    {
      DBUG_PRINT("error",("Got error %d on connect to '%s'",socket_errno,
			  host));
      net->last_errno= CR_CONN_HOST_ERROR;
unknown's avatar
unknown committed
1664
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1665 1666 1667 1668
      sprintf(net->last_error ,ER(CR_CONN_HOST_ERROR), host, socket_errno);
      goto error;
    }
  }
1669
  if (!net->vio)
unknown's avatar
SCRUM  
unknown committed
1670 1671
  {
    DBUG_PRINT("error",("Unknow protocol %d ",mysql->options.protocol));
unknown's avatar
unknown committed
1672
    strmov(net->sqlstate, unknown_sqlstate);
1673 1674
    net->last_errno= CR_CONN_UNKNOW_PROTOCOL;
    strmov(net->last_error, ER(CR_CONN_UNKNOW_PROTOCOL));
unknown's avatar
SCRUM  
unknown committed
1675 1676
    goto error;
  }
1677 1678

  if (my_net_init(net, net->vio))
unknown's avatar
SCRUM  
unknown committed
1679 1680 1681 1682
  {
    vio_delete(net->vio);
    net->vio = 0;
    net->last_errno=CR_OUT_OF_MEMORY;
unknown's avatar
unknown committed
1683
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1684 1685 1686 1687
    strmov(net->last_error,ER(net->last_errno));
    goto error;
  }
  vio_keepalive(net->vio,TRUE);
1688 1689 1690 1691 1692 1693 1694 1695
  /* Override local client variables */
  if (mysql->options.read_timeout)
    net->read_timeout= mysql->options.read_timeout;
  if (mysql->options.write_timeout)
    net->write_timeout= mysql->options.write_timeout;
  if (mysql->options.max_allowed_packet)
    net->max_packet_size= mysql->options.max_allowed_packet;

unknown's avatar
SCRUM  
unknown committed
1696 1697 1698 1699 1700 1701
  /* 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;
unknown's avatar
unknown committed
1702
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1703 1704 1705
    strmov(net->last_error,ER(net->last_errno));
    goto error;
  }
1706 1707 1708 1709 1710

  /*
    Part 1: Connection established, read and parse first packet
  */

unknown's avatar
SCRUM  
unknown committed
1711 1712 1713 1714 1715 1716 1717 1718 1719
  if ((pkt_length=net_safe_read(mysql)) == packet_error)
    goto error;

  /* Check if version of protocol 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));
1720
  if (mysql->protocol_version != PROTOCOL_VERSION)
unknown's avatar
SCRUM  
unknown committed
1721
  {
1722
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1723 1724 1725 1726 1727 1728 1729 1730
    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;
1731 1732 1733 1734
  /* 
    Scramble is split into two parts because old clients does not understand
    long scrambles; here goes the first part.
  */
1735
  strmake(mysql->scramble, end, SCRAMBLE_LENGTH_323);
1736 1737
  end+= SCRAMBLE_LENGTH_323+1;

unknown's avatar
SCRUM  
unknown committed
1738 1739 1740 1741 1742 1743 1744 1745
  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);
  }
1746 1747 1748 1749 1750 1751 1752
  end+= 18;
  if (pkt_length >= (uint) (end + SCRAMBLE_LENGTH - SCRAMBLE_LENGTH_323 + 1 - 
                           (char *) net->read_pos))
    strmake(mysql->scramble+SCRAMBLE_LENGTH_323, end,
            SCRAMBLE_LENGTH-SCRAMBLE_LENGTH_323);
  else
    mysql->server_capabilities&= ~CLIENT_SECURE_CONNECTION;
unknown's avatar
SCRUM  
unknown committed
1753

unknown's avatar
unknown committed
1754 1755 1756 1757 1758 1759 1760 1761
  if (mysql->options.secure_auth && passwd[0] &&
      !(mysql->server_capabilities & CLIENT_SECURE_CONNECTION))
  {
    strmov(net->sqlstate, unknown_sqlstate);
    strmov(net->last_error, ER(net->last_errno=CR_SECURE_AUTH));
    goto error;
  }

unknown's avatar
unknown committed
1762
  charset_number= mysql->server_language;
unknown's avatar
SCRUM  
unknown committed
1763 1764 1765 1766

  /* Set character set */
  if ((charset_name=mysql->options.charset_name))
  {
unknown's avatar
unknown committed
1767
    const char *save= charsets_dir;
unknown's avatar
SCRUM  
unknown committed
1768 1769
    if (mysql->options.charset_dir)
      charsets_dir=mysql->options.charset_dir;
unknown's avatar
unknown committed
1770
    mysql->charset=get_charset_by_csname(mysql->options.charset_name,
1771 1772
					 MY_CS_PRIMARY,
					 MYF(MY_WME));
unknown's avatar
unknown committed
1773 1774
    charset_number= mysql->charset ? mysql->charset->number : 0;
    charsets_dir= save;
unknown's avatar
SCRUM  
unknown committed
1775 1776 1777 1778
  }
  else if (mysql->server_language)
  {
    charset_name=charset_name_buff;
1779 1780
    /* Save name in case of errors */
    int10_to_str(mysql->server_language, charset_name, 10);
unknown's avatar
SCRUM  
unknown committed
1781 1782 1783 1784 1785
    if (!(mysql->charset =
	  get_charset((uint8) mysql->server_language, MYF(0))))
      mysql->charset = default_charset_info; /* shouldn't be fatal */
  }
  else
unknown's avatar
unknown committed
1786 1787 1788 1789
  {
    mysql->charset= default_charset_info;
    charset_number= mysql->charset->number;
  }
unknown's avatar
SCRUM  
unknown committed
1790 1791 1792 1793

  if (!mysql->charset)
  {
    net->last_errno=CR_CANT_READ_CHARSET;
unknown's avatar
unknown committed
1794
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1795
    if (mysql->options.charset_dir)
1796 1797 1798 1799
      my_snprintf(net->last_error, sizeof(net->last_error)-1,
		  ER(net->last_errno),
		  charset_name ? charset_name : "unknown",
		  mysql->options.charset_dir);
unknown's avatar
SCRUM  
unknown committed
1800 1801 1802 1803
    else
    {
      char cs_dir_name[FN_REFLEN];
      get_charsets_dir(cs_dir_name);
1804 1805 1806 1807
      my_snprintf(net->last_error, sizeof(net->last_error)-1,
		  ER(net->last_errno),
		  charset_name ? charset_name : "unknown",
		  cs_dir_name);
unknown's avatar
SCRUM  
unknown committed
1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823
    }
    goto error;
  }

  /* Save connection information */
  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))))
  {
unknown's avatar
unknown committed
1824
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836
    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;

1837 1838 1839 1840 1841
  /*
    Part 2: format and send client info to the server for access check
  */
  
  client_flag|=mysql->options.client_flag;
unknown's avatar
SCRUM  
unknown committed
1842
  client_flag|=CLIENT_CAPABILITIES;
1843
  if (client_flag & CLIENT_MULTI_STATEMENTS)
unknown's avatar
unknown committed
1844
    client_flag|= CLIENT_MULTI_RESULTS;
unknown's avatar
SCRUM  
unknown committed
1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863

#ifdef HAVE_OPENSSL
  if (mysql->options.ssl_key || mysql->options.ssl_cert ||
      mysql->options.ssl_ca || mysql->options.ssl_capath ||
      mysql->options.ssl_cipher)
    mysql->options.use_ssl= 1;
  if (mysql->options.use_ssl)
    client_flag|=CLIENT_SSL;
#endif /* HAVE_OPENSSL */
  if (db)
    client_flag|=CLIENT_CONNECT_WITH_DB;

  /* Remove options that server doesn't support */
  client_flag= ((client_flag &
		 ~(CLIENT_COMPRESS | CLIENT_SSL | CLIENT_PROTOCOL_41)) |
		(client_flag & mysql->server_capabilities));
#ifndef HAVE_COMPRESS
  client_flag&= ~CLIENT_COMPRESS;
#endif
1864

unknown's avatar
SCRUM  
unknown committed
1865 1866
  if (client_flag & CLIENT_PROTOCOL_41)
  {
unknown's avatar
unknown committed
1867
    /* 4.1 server and 4.1 client has a 32 byte option flag */
unknown's avatar
SCRUM  
unknown committed
1868
    int4store(buff,client_flag);
1869
    int4store(buff+4, net->max_packet_size);
unknown's avatar
unknown committed
1870
    buff[8]= (char) charset_number;
unknown's avatar
unknown committed
1871 1872
    bzero(buff+9, 32-9);
    end= buff+32;
unknown's avatar
SCRUM  
unknown committed
1873 1874 1875 1876
  }
  else
  {
    int2store(buff,client_flag);
1877
    int3store(buff+2,net->max_packet_size);
unknown's avatar
SCRUM  
unknown committed
1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891
    end= buff+5;
  }
  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)
  {
    struct st_mysql_options *options= &mysql->options;
    if (my_net_write(net,buff,(uint) (end-buff)) || net_flush(net))
    {
unknown's avatar
unknown committed
1892
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904
      net->last_errno= CR_SERVER_LOST;
      strmov(net->last_error,ER(net->last_errno));
      goto error;
    }
    /* Do the SSL layering. */
    if (!(mysql->connector_fd=
	  (gptr) new_VioSSLConnectorFd(options->ssl_key,
				       options->ssl_cert,
				       options->ssl_ca,
				       options->ssl_capath,
				       options->ssl_cipher)))
    {
unknown's avatar
unknown committed
1905
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1906 1907 1908 1909 1910 1911 1912 1913
      net->last_errno= CR_SSL_CONNECTION_ERROR;
      strmov(net->last_error,ER(net->last_errno));
      goto error;
    }
    DBUG_PRINT("info", ("IO layer change in progress..."));
    if (sslconnect((struct st_VioSSLConnectorFd*)(mysql->connector_fd),
		   mysql->net.vio, (long) (mysql->options.connect_timeout)))
    {
unknown's avatar
unknown committed
1914
      strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927
      net->last_errno= CR_SSL_CONNECTION_ERROR;
      strmov(net->last_error,ER(net->last_errno));
      goto error;
    }
    DBUG_PRINT("info", ("IO layer change done!"));
  }
#endif /* HAVE_OPENSSL */

  DBUG_PRINT("info",("Server version = '%s'  capabilites: %lu  status: %u  client_flag: %lu",
		     mysql->server_version,mysql->server_capabilities,
		     mysql->server_status, client_flag));
  /* This needs to be changed as it's not useful with big packets */
  if (user && user[0])
unknown's avatar
unknown committed
1928
    strmake(end,user,USERNAME_LENGTH);          /* Max user name */
unknown's avatar
SCRUM  
unknown committed
1929 1930
  else
    read_user_name((char*) end);
1931

unknown's avatar
SCRUM  
unknown committed
1932
  /* We have to handle different version of handshake here */
1933 1934
#ifdef _CUSTOMCONFIG_
#include "_cust_libmysql.h"
unknown's avatar
SCRUM  
unknown committed
1935 1936
#endif
  DBUG_PRINT("info",("user: %s",end));
1937 1938
  end= strend(end) + 1;
  if (passwd[0])
unknown's avatar
SCRUM  
unknown committed
1939
  {
unknown's avatar
unknown committed
1940
    if (mysql->server_capabilities & CLIENT_SECURE_CONNECTION)
unknown's avatar
SCRUM  
unknown committed
1941
    {
unknown's avatar
unknown committed
1942 1943 1944
      *end++= SCRAMBLE_LENGTH;
      scramble(end, mysql->scramble, passwd);
      end+= SCRAMBLE_LENGTH;
unknown's avatar
SCRUM  
unknown committed
1945
    }
unknown's avatar
unknown committed
1946
    else
unknown's avatar
SCRUM  
unknown committed
1947
    {
1948 1949
      scramble_323(end, mysql->scramble, passwd);
      end+= SCRAMBLE_LENGTH_323 + 1;
unknown's avatar
SCRUM  
unknown committed
1950 1951 1952
    }
  }
  else
unknown's avatar
unknown committed
1953
    *end++= '\0';                               /* empty password */
1954

unknown's avatar
SCRUM  
unknown committed
1955 1956 1957
  /* Add database if needed */
  if (db && (mysql->server_capabilities & CLIENT_CONNECT_WITH_DB))
  {
unknown's avatar
unknown committed
1958 1959 1960
    end= strmake(end, db, NAME_LEN) + 1;
    mysql->db= my_strdup(db,MYF(MY_WME));
    db= 0;
unknown's avatar
SCRUM  
unknown committed
1961 1962 1963 1964
  }
  /* Write authentication package */
  if (my_net_write(net,buff,(ulong) (end-buff)) || net_flush(net))
  {
unknown's avatar
unknown committed
1965
    strmov(net->sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
1966 1967 1968 1969
    net->last_errno= CR_SERVER_LOST;
    strmov(net->last_error,ER(net->last_errno));
    goto error;
  }
1970 1971 1972 1973 1974
  
  /*
    Part 3: Authorization data's been sent. Now server can reply with
    OK-packet, or re-request scrambled password.
  */
unknown's avatar
SCRUM  
unknown committed
1975

1976
  if ((pkt_length=net_safe_read(mysql)) == packet_error)
unknown's avatar
SCRUM  
unknown committed
1977 1978
    goto error;

1979
  if (pkt_length == 1 && net->read_pos[0] == 254 && 
1980 1981 1982 1983
      mysql->server_capabilities & CLIENT_SECURE_CONNECTION)
  {
    /*
      By sending this very specific reply server asks us to send scrambled
unknown's avatar
unknown committed
1984
      password in old format.
1985
    */
1986
    scramble_323(buff, mysql->scramble, passwd);
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
    if (my_net_write(net, buff, SCRAMBLE_LENGTH_323 + 1) || net_flush(net))
    {
      net->last_errno= CR_SERVER_LOST;
      strmov(net->sqlstate, unknown_sqlstate);
      strmov(net->last_error,ER(net->last_errno));
      goto error;
    }
    /* Read what server thinks about out new auth message report */
    if (net_safe_read(mysql) == packet_error)
      goto error;
  }


unknown's avatar
SCRUM  
unknown committed
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
  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_commands)
  {
    DYNAMIC_ARRAY *init_commands= mysql->options.init_commands;
    char **ptr= (char**)init_commands->buffer;
    char **end= ptr + init_commands->elements;

    my_bool reconnect=mysql->reconnect;
    mysql->reconnect=0;

    for (; ptr<end; ptr++)
    {
      MYSQL_RES *res;
2018
      if (mysql_real_query(mysql,*ptr, strlen(*ptr)))
unknown's avatar
SCRUM  
unknown committed
2019 2020 2021
	goto error;
      if (mysql->fields)
      {
unknown's avatar
unknown committed
2022
	if (!(res= cli_mysql_use_result(mysql)))
unknown's avatar
SCRUM  
unknown committed
2023 2024 2025 2026 2027 2028 2029
	  goto error;
	mysql_free_result(res);
      }
    }
    mysql->reconnect=reconnect;
  }

2030
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
2031 2032
  if (mysql->options.rpl_probe && mysql_rpl_probe(mysql))
    goto error;
2033
#endif
unknown's avatar
SCRUM  
unknown committed
2034 2035 2036 2037 2038 2039 2040

  DBUG_PRINT("exit",("Mysql handler: %lx",mysql));
  reset_sigpipe(mysql);
  DBUG_RETURN(mysql);

error:
  reset_sigpipe(mysql);
unknown's avatar
unknown committed
2041 2042
  DBUG_PRINT("error",("message: %u/%s (%s)",
		      net->last_errno, net->sqlstate, net->last_error));
unknown's avatar
SCRUM  
unknown committed
2043 2044 2045
  {
    /* Free alloced memory */
    end_server(mysql);
2046 2047 2048
    mysql_close_free(mysql);
    if (!(client_flag & CLIENT_REMEMBER_OPTIONS))
      mysql_close_free_options(mysql);
unknown's avatar
SCRUM  
unknown committed
2049 2050 2051 2052
  }
  DBUG_RETURN(0);
}

2053

unknown's avatar
SCRUM  
unknown committed
2054 2055
/* needed when we move MYSQL structure to a different address */

2056
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
2057 2058
static void mysql_fix_pointers(MYSQL* mysql, MYSQL* old_mysql)
{
2059
  MYSQL *tmp, *tmp_prev;
unknown's avatar
SCRUM  
unknown committed
2060
  if (mysql->master == old_mysql)
2061
    mysql->master= mysql;
unknown's avatar
SCRUM  
unknown committed
2062
  if (mysql->last_used_con == old_mysql)
2063
    mysql->last_used_con= mysql;
unknown's avatar
SCRUM  
unknown committed
2064
  if (mysql->last_used_slave == old_mysql)
2065 2066 2067
    mysql->last_used_slave= mysql;
  for (tmp_prev = mysql, tmp = mysql->next_slave;
       tmp != old_mysql;tmp = tmp->next_slave)
unknown's avatar
SCRUM  
unknown committed
2068
  {
2069
    tmp_prev= tmp;
unknown's avatar
SCRUM  
unknown committed
2070
  }
2071
  tmp_prev->next_slave= mysql;
unknown's avatar
unknown committed
2072
}
2073
#endif
unknown's avatar
SCRUM  
unknown committed
2074

unknown's avatar
unknown committed
2075

unknown's avatar
SCRUM  
unknown committed
2076 2077 2078 2079 2080
my_bool mysql_reconnect(MYSQL *mysql)
{
  MYSQL tmp_mysql;
  DBUG_ENTER("mysql_reconnect");

unknown's avatar
unknown committed
2081 2082
  if (!mysql->reconnect ||
      (mysql->server_status & SERVER_STATUS_IN_TRANS) || !mysql->host_info)
unknown's avatar
SCRUM  
unknown committed
2083
  {
unknown's avatar
unknown committed
2084
    /* Allow reconnect next time */
unknown's avatar
SCRUM  
unknown committed
2085
    mysql->server_status&= ~SERVER_STATUS_IN_TRANS;
unknown's avatar
unknown committed
2086
    strmov(mysql->net.sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
2087 2088 2089 2090 2091 2092 2093 2094 2095
    mysql->net.last_errno=CR_SERVER_GONE_ERROR;
    strmov(mysql->net.last_error,ER(mysql->net.last_errno));
    DBUG_RETURN(1);
  }
  mysql_init(&tmp_mysql);
  tmp_mysql.options=mysql->options;
  tmp_mysql.rpl_pivot = mysql->rpl_pivot;
  if (!mysql_real_connect(&tmp_mysql,mysql->host,mysql->user,mysql->passwd,
			  mysql->db, mysql->port, mysql->unix_socket,
2096
			  mysql->client_flag | CLIENT_REMEMBER_OPTIONS))
unknown's avatar
SCRUM  
unknown committed
2097 2098 2099
  {
    mysql->net.last_errno= tmp_mysql.net.last_errno;
    strmov(mysql->net.last_error, tmp_mysql.net.last_error);
2100
    strmov(mysql->net.sqlstate, tmp_mysql.net.sqlstate);
unknown's avatar
SCRUM  
unknown committed
2101 2102
    DBUG_RETURN(1);
  }
unknown's avatar
unknown committed
2103 2104 2105
  tmp_mysql.free_me= mysql->free_me;
  /* Don't free options as these are now used in tmp_mysql */
  bzero((char*) &mysql->options,sizeof(mysql->options));
unknown's avatar
SCRUM  
unknown committed
2106 2107 2108 2109 2110 2111 2112 2113 2114
  mysql->free_me=0;
  mysql_close(mysql);
  *mysql=tmp_mysql;
  mysql_fix_pointers(mysql, &tmp_mysql); /* adjust connection pointers */
  net_clear(&mysql->net);
  mysql->affected_rows= ~(my_ulonglong) 0;
  DBUG_RETURN(0);
}

2115

unknown's avatar
SCRUM  
unknown committed
2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
/**************************************************************************
  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,(ulong) 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.
*************************************************************************/

2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150
static void mysql_close_free_options(MYSQL *mysql)
{
  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));
unknown's avatar
unknown committed
2151
  my_free(mysql->options.client_ip,MYF(MY_ALLOW_ZERO_PTR));
2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168
  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));
  }
#ifdef HAVE_OPENSSL
  mysql_ssl_free(mysql);
#endif /* HAVE_OPENSSL */
#ifdef HAVE_SMEM
  if (mysql->options.shared_memory_base_name != def_shared_memory_base_name)
    my_free(mysql->options.shared_memory_base_name,MYF(MY_ALLOW_ZERO_PTR));
#endif /* HAVE_SMEM */
unknown's avatar
unknown committed
2169
  bzero((char*) &mysql->options,sizeof(mysql->options));
2170 2171 2172 2173 2174 2175
}


static void mysql_close_free(MYSQL *mysql)
{
  my_free((gptr) mysql->host_info,MYF(MY_ALLOW_ZERO_PTR));
unknown's avatar
unknown committed
2176 2177 2178 2179
  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));
  /* Clear pointers for better safety */
2180 2181 2182 2183
  mysql->host_info=mysql->user=mysql->passwd=mysql->db=0;
}


unknown's avatar
unknown committed
2184
void STDCALL mysql_close(MYSQL *mysql)
unknown's avatar
SCRUM  
unknown committed
2185 2186 2187 2188
{
  DBUG_ENTER("mysql_close");
  if (mysql)					/* Some simple safety */
  {
2189
    /* If connection is still up, send a QUIT message */
unknown's avatar
SCRUM  
unknown committed
2190 2191 2192 2193 2194 2195 2196 2197
    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);			/* Sets mysql->net.vio= 0 */
    }
2198 2199 2200 2201
    mysql_close_free_options(mysql);
    mysql_close_free(mysql);
#ifdef MYSQL_CLIENT
    if (mysql->stmts)
unknown's avatar
SCRUM  
unknown committed
2202
    {
2203 2204 2205 2206 2207 2208 2209 2210
      /* Free any open prepared statements */
      LIST *element, *next_element;
      for (element= mysql->stmts; element; element= next_element)
      {
        next_element= element->next;
        stmt_close((MYSQL_STMT *)element->data, 0);
      }
      mysql->stmts= 0;
unknown's avatar
SCRUM  
unknown committed
2211
    }
2212 2213
#endif /*MYSQL_CLIENT*/
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226
    /* free/close slave list */
    if (mysql->rpl_pivot)
    {
      MYSQL* tmp;
      for (tmp = mysql->next_slave; tmp != mysql; )
      {
	/* trick to avoid following freed pointer */
	MYSQL* tmp1 = tmp->next_slave;
	mysql_close(tmp);
	tmp = tmp1;
      }
      mysql->rpl_pivot=0;
    }
2227
#endif
unknown's avatar
SCRUM  
unknown committed
2228 2229
    if (mysql != mysql->master)
      mysql_close(mysql->master);
unknown's avatar
SCRUM  
unknown committed
2230 2231 2232 2233
#ifndef MYSQL_SERVER
    if (mysql->thd)
      (*mysql->methods->free_embedded_thd)(mysql);
#endif
unknown's avatar
SCRUM  
unknown committed
2234 2235 2236 2237 2238 2239
    if (mysql->free_me)
      my_free((gptr) mysql,MYF(0));
  }
  DBUG_VOID_RETURN;
}

unknown's avatar
unknown committed
2240
static my_bool cli_mysql_read_query_result(MYSQL *mysql)
unknown's avatar
SCRUM  
unknown committed
2241 2242 2243 2244 2245
{
  uchar *pos;
  ulong field_count;
  MYSQL_DATA *fields;
  ulong length;
unknown's avatar
unknown committed
2246
  DBUG_ENTER("cli_mysql_read_query_result");
unknown's avatar
SCRUM  
unknown committed
2247 2248 2249 2250 2251 2252 2253 2254 2255

  /*
    Read from the connection which we actually used, which
    could differ from the original connection if we have slaves
  */
  mysql = mysql->last_used_con;

  if ((length = net_safe_read(mysql)) == packet_error)
    DBUG_RETURN(1);
2256 2257
  free_old_query(mysql);		/* Free old result */
#ifdef MYSQL_CLIENT			/* Avoid warn of unused labels*/
unknown's avatar
SCRUM  
unknown committed
2258
get_info:
unknown's avatar
unknown committed
2259
#endif
unknown's avatar
SCRUM  
unknown committed
2260 2261 2262 2263 2264 2265 2266 2267 2268 2269
  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 (protocol_41(mysql))
    {
      mysql->server_status=uint2korr(pos); pos+=2;
      mysql->warning_count=uint2korr(pos); pos+=2;
    }
unknown's avatar
unknown committed
2270
    else if (mysql->server_capabilities & CLIENT_TRANSACTIONS)
unknown's avatar
SCRUM  
unknown committed
2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
    {
      mysql->server_status=uint2korr(pos); pos+=2;
      mysql->warning_count= 0;
    }
    DBUG_PRINT("info",("status: %ld  warning_count:  %ld",
		       mysql->server_status, mysql->warning_count));
    if (pos < mysql->net.read_pos+length && net_field_length(&pos))
      mysql->info=(char*) pos;
    DBUG_RETURN(0);
  }
unknown's avatar
unknown committed
2281
#ifdef MYSQL_CLIENT
unknown's avatar
SCRUM  
unknown committed
2282 2283 2284 2285 2286 2287 2288
  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 */
  }
unknown's avatar
unknown committed
2289
#endif
unknown's avatar
SCRUM  
unknown committed
2290 2291 2292 2293 2294
  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 */

unknown's avatar
SCRUM  
unknown committed
2295 2296
  if (!(fields=(*mysql->methods->read_rows)(mysql,(MYSQL_FIELD*)0,
					    protocol_41(mysql) ? 7 : 5)))
unknown's avatar
SCRUM  
unknown committed
2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320
    DBUG_RETURN(1);
  if (!(mysql->fields=unpack_fields(fields,&mysql->field_alloc,
				    (uint) field_count,0,
				    mysql->server_capabilities)))
    DBUG_RETURN(1);
  mysql->status= MYSQL_STATUS_GET_RESULT;
  mysql->field_count= (uint) field_count;
  mysql->warning_count= 0;
  DBUG_RETURN(0);
}


/*
  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, ulong length)
{
  DBUG_ENTER("mysql_send_query");
  DBUG_PRINT("enter",("rpl_parse: %d  rpl_pivot: %d",
		      mysql->options.rpl_parse, mysql->rpl_pivot));
2321
#ifndef TO_BE_DELETED
unknown's avatar
SCRUM  
unknown committed
2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333
  if (mysql->options.rpl_parse && mysql->rpl_pivot)
  {
    switch (mysql_rpl_query_type(query, length)) {
    case MYSQL_RPL_MASTER:
      DBUG_RETURN(mysql_master_send_query(mysql, query, length));
    case MYSQL_RPL_SLAVE:
      DBUG_RETURN(mysql_slave_send_query(mysql, query, length));
    case MYSQL_RPL_ADMIN:
      break;					/* fall through */
    }
  }
  mysql->last_used_con = mysql;
2334
#endif
unknown's avatar
SCRUM  
unknown committed
2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348

  DBUG_RETURN(simple_command(mysql, COM_QUERY, query, length, 1));
}


int STDCALL
mysql_real_query(MYSQL *mysql, const char *query, ulong length)
{
  DBUG_ENTER("mysql_real_query");
  DBUG_PRINT("enter",("handle: %lx",mysql));
  DBUG_PRINT("query",("Query = '%-.4096s'",query));

  if (mysql_send_query(mysql,query,length))
    DBUG_RETURN(1);
unknown's avatar
unknown committed
2349
  DBUG_RETURN((int) (*mysql->methods->read_query_result)(mysql));
unknown's avatar
SCRUM  
unknown committed
2350 2351
}

2352

unknown's avatar
SCRUM  
unknown committed
2353 2354 2355 2356 2357
/**************************************************************************
  Alloc result struct for buffered results. All rows are read to buffer.
  mysql_data_seek may be used.
**************************************************************************/

unknown's avatar
SCRUM  
unknown committed
2358
MYSQL_RES * STDCALL mysql_store_result(MYSQL *mysql)
unknown's avatar
SCRUM  
unknown committed
2359 2360 2361 2362 2363 2364 2365 2366 2367
{
  MYSQL_RES *result;
  DBUG_ENTER("mysql_store_result");
  /* read from the actually used connection */
  mysql = mysql->last_used_con;
  if (!mysql->fields)
    DBUG_RETURN(0);
  if (mysql->status != MYSQL_STATUS_GET_RESULT)
  {
unknown's avatar
unknown committed
2368
    strmov(mysql->net.sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
2369 2370 2371 2372 2373 2374 2375 2376 2377 2378
    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((uint) (sizeof(MYSQL_RES)+
					      sizeof(ulong) *
					      mysql->field_count),
				      MYF(MY_WME | MY_ZEROFILL))))
  {
unknown's avatar
unknown committed
2379
    strmov(mysql->net.sqlstate, unknown_sqlstate);
unknown's avatar
SCRUM  
unknown committed
2380 2381 2382 2383
    mysql->net.last_errno=CR_OUT_OF_MEMORY;
    strmov(mysql->net.last_error, ER(mysql->net.last_errno));
    DBUG_RETURN(0);
  }
2384
  result->methods= mysql->methods;
unknown's avatar
SCRUM  
unknown committed
2385 2386
  result->eof=1;				/* Marker for buffered */
  result->lengths=(ulong*) (result+1);
unknown's avatar
SCRUM  
unknown committed
2387 2388
  if (!(result->data=
	(*mysql->methods->read_rows)(mysql,mysql->fields,mysql->field_count)))
unknown's avatar
SCRUM  
unknown committed
2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403
  {
    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 */
}

2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414

/**************************************************************************
  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).
**************************************************************************/

unknown's avatar
unknown committed
2415
static MYSQL_RES * cli_mysql_use_result(MYSQL *mysql)
2416 2417
{
  MYSQL_RES *result;
unknown's avatar
unknown committed
2418
  DBUG_ENTER("cli_mysql_use_result");
2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435

  mysql = mysql->last_used_con;

  if (!mysql->fields)
    DBUG_RETURN(0);
  if (mysql->status != MYSQL_STATUS_GET_RESULT)
  {
    strmov(mysql->net.sqlstate, unknown_sqlstate);
    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);
2436
  result->methods= mysql->methods;
2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454
  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 */
}


unknown's avatar
SCRUM  
unknown committed
2455
/**************************************************************************
2456
  Return next row of the query results
unknown's avatar
SCRUM  
unknown committed
2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496
**************************************************************************/

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);
  }
}


unknown's avatar
unknown committed
2497 2498 2499 2500 2501 2502 2503 2504 2505
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;
2506 2507 2508 2509 2510 2511
  case MYSQL_OPT_READ_TIMEOUT:
    mysql->options.read_timeout= *(uint*) arg;
    break;
  case MYSQL_OPT_WRITE_TIMEOUT:
    mysql->options.write_timeout= *(uint*) arg;
    break;
unknown's avatar
unknown committed
2512 2513 2514 2515
  case MYSQL_OPT_COMPRESS:
    mysql->options.compress= 1;			/* Remember for connect */
    mysql->options.client_flag|= CLIENT_COMPRESS;
    break;
2516
  case MYSQL_OPT_NAMED_PIPE:			/* This option is depricated */
unknown's avatar
unknown committed
2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552
    mysql->options.protocol=MYSQL_PROTOCOL_PIPE; /* 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:
    add_init_command(&mysql->options,arg);
    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;
  case MYSQL_OPT_PROTOCOL:
    mysql->options.protocol= *(uint*) arg;
    break;
  case MYSQL_SHARED_MEMORY_BASE_NAME:
#ifdef HAVE_SMEM
    if (mysql->options.shared_memory_base_name != def_shared_memory_base_name)
      my_free(mysql->options.shared_memory_base_name,MYF(MY_ALLOW_ZERO_PTR));
    mysql->options.shared_memory_base_name=my_strdup(arg,MYF(MY_WME));
#endif
unknown's avatar
fix:  
unknown committed
2553
    break;
unknown's avatar
SCRUM  
unknown committed
2554 2555 2556 2557
  case MYSQL_OPT_USE_REMOTE_CONNECTION:
  case MYSQL_OPT_USE_EMBEDDED_CONNECTION:
  case MYSQL_OPT_GUESS_CONNECTION:
    mysql->options.methods_to_use= option;
unknown's avatar
unknown committed
2558
    break;
unknown's avatar
unknown committed
2559 2560
  case MYSQL_SET_CLIENT_IP:
    mysql->options.client_ip= my_strdup(arg, MYF(MY_WME));
unknown's avatar
unknown committed
2561 2562
  case MYSQL_SECURE_AUTH:
    mysql->options.secure_auth= *(my_bool *) arg;
unknown's avatar
fix:  
unknown committed
2563
    break;
unknown's avatar
unknown committed
2564 2565 2566 2567 2568 2569 2570
  default:
    DBUG_RETURN(1);
  }
  DBUG_RETURN(0);
}


unknown's avatar
SCRUM  
unknown committed
2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595
/****************************************************************************
  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;
}

uint STDCALL mysql_errno(MYSQL *mysql)
{
  return mysql->net.last_errno;
}

const char * STDCALL mysql_error(MYSQL *mysql)
{
  return mysql->net.last_error;
}