lib_sql.cc 17.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650
/*
 * Copyright (c)  2000
 * SWsoft  company
 *
 * This material is provided "as is", with absolutely no warranty expressed
 * or implied. Any use is at your own risk.
 *
 * Permission to use or copy this software for any purpose is hereby granted 
 * without fee, provided the above notices are retained on all copies.
 * Permission to modify the code and to distribute modified code is granted,
 * provided the above notices are retained, and a notice that the code was
 * modified is included with the above copyright notice.
 *
 */
#include "global.h"
#include "my_pthread.h"
#include "sys/types.h"
#include "../regex/regex.h"
#include "my_sys.h"

#define main main1
#define mysql_unix_port mysql_inix_port1
#define mysql_port mysql_port1
#define net_read_timeout net_read_timeout1
#define net_write_timeout net_write_timeout1
#define changeable_vars changeable_vars1
//#define mysql_tmpdir mysql_tmpdir1

extern "C"
{
#include "mysql_com.h"
}


class THD;

static int 
check_connections1(THD * thd);

static bool 
check_user(THD *thd, enum_server_command command,const char *user, const char *passwd, const char *db, bool check_count);

static int
check_connections2(THD * thd);

extern void free_defaults(char ** argv);
void free_defaults_internal(char ** argv){if (argv) free_defaults(argv);}
#define free_defaults free_defaults_internal

char mysql_data_home[FN_REFLEN];
char * get_mysql_data_home(){return mysql_data_home;};
#define mysql_data_home mysql_data_home_internal
#include "../sql/mysqld.cc"
#include "lib_vio.c"

#define SCRAMBLE_LENGTH 8
extern "C" {

/*
void
free_defaults(char ** argv) {};
void
load_defaults(const char *, const char **, int *, char ***) {};
*/

char *
get_mysql_home(){ return mysql_home;};
char *
get_mysql_real_data_home(){ return mysql_real_data_home;};


bool lib_dispatch_command(enum enum_server_command command, NET *net,
			  const char *arg, ulong length)
{
  net_new_transaction(&((THD *)net->vio->dest_thd)->net);
  return dispatch_command(command, (THD *)net->vio->dest_thd, (char *)arg, length + 1);
}



void 
lib_connection_phase(NET * net, int phase)
{
   THD * thd;
   thd = (THD *)(net->vio->dest_thd);
   if (thd)
   {
	switch (phase)
	{
		case 2: 
		check_connections2(thd);
		break;
	}
   }
}
}
void start_embedded_conn1(NET * net)
{
  THD * thd = new THD;
  my_net_init(&thd->net,NULL);
  /* if (protocol_version>9) */
  thd->net.return_errno=1;
  thd->thread_id = thread_id++;

  Vio * v  = net->vio;
  if (!v)
  {
    v = vio_new(0,VIO_CLOSED,0);
    net->vio = v;
  }
  if (v)
  {
    v -> dest_thd = thd;
    /* v -> dest_net = &thd->net;	XXX: Probably not needed? */
  } 
  thd->net.vio = v;
  if (thd->store_globals())
  {
    printf("store_globals failed.\n");
    return;
  }

  thd->mysys_var=my_thread_var;
  thd->dbug_thread_id=my_thread_id();
  thd->thread_stack= (char*) &thd;

  if (thd->max_join_size == HA_POS_ERROR)
    thd->options |= OPTION_BIG_SELECTS;
  if (thd->client_capabilities & CLIENT_COMPRESS)
    net->compress=1;				// Use compression
  if (thd->options & OPTION_ANSI_MODE)
    thd->client_capabilities|=CLIENT_IGNORE_SPACE;

  thd->proc_info=0;				// Remove 'login'
  thd->command=COM_SLEEP;
  thd->version=refresh_version;
  thd->set_time();
  init_sql_alloc(&thd->mem_root,8192,8192);

  check_connections1(thd);
}




static int
check_connections1(THD *thd)
{
  uint connect_errors=0;
  NET *net= &thd->net;
  /*
  ** store the connection details
  */
  DBUG_PRINT("info", (("check_connections called by thread %d"),
	     thd->thread_id));
  DBUG_PRINT("general",("New connection received on %s",
			vio_description(net->vio)));
  if (!thd->host)                           // If TCP/IP connection
  {
      thd->host=(char*) localhost;
  }
  else /* Hostname given means that the connection was on a socket */
  {
    DBUG_PRINT("general",("Host: %s",thd->host));
    thd->ip=0;
    bzero((char*) &thd->remote,sizeof(struct sockaddr));
  }
  //vio_keepalive(net->vio, TRUE);

  /* nasty, but any other way? */
  uint pkt_len = 0;
  
    char buff[80],*end;
    int client_flags = CLIENT_LONG_FLAG | CLIENT_CONNECT_WITH_DB |
	               CLIENT_TRANSACTIONS;
    LINT_INIT(pkt_len);

    end=strmov(buff,server_version)+1;
    int4store((uchar*) end,thd->thread_id);
    end+=4;
    memcpy(end,thd->scramble,SCRAMBLE_LENGTH+1);
    end+=SCRAMBLE_LENGTH +1;
#ifdef HAVE_COMPRESS
    client_flags |= CLIENT_COMPRESS;
#endif /* HAVE_COMPRESS */
    int2store(end,client_flags);
    end[2]=MY_CHARSET_CURRENT;

#define MIN_HANDSHAKE_SIZE	6

    int2store(end+3,thd->server_status);
    bzero(end+5,13);
    end+=18;
    if (net_write_command(net,protocol_version, buff,
			  (uint) (end-buff))) 
    {
      inc_host_errors(&thd->remote.sin_addr);
      return(ER_HANDSHAKE_ERROR);
    }
   return 0; 
}

static int
check_connections2(THD * thd)
{
uint connect_errors=0;
uint pkt_len = 0;
NET * net = &thd -> net;
if (protocol_version>9) net -> return_errno=1;

   if ( (pkt_len=my_net_read(net)) == packet_error ||
	pkt_len < MIN_HANDSHAKE_SIZE)
    {
      inc_host_errors(&thd->remote.sin_addr);
      return(ER_HANDSHAKE_ERROR);
    }

#ifdef _CUSTOMCONFIG_
#include "_cust_sql_parse.h"
#endif
  if (connect_errors)
    reset_host_errors(&thd->remote.sin_addr);
  if (thd->packet.alloc(net_buffer_length))
    return(ER_OUT_OF_RESOURCES);

  thd->client_capabilities=uint2korr(net->read_pos);

  thd->max_packet_length=uint3korr(net->read_pos+2);
  char *user=   (char*) net->read_pos+5;
  char *passwd= strend(user)+1;
  char *db=0;
  if (passwd[0] && strlen(passwd) != SCRAMBLE_LENGTH)
    return ER_HANDSHAKE_ERROR;
  if (thd->client_capabilities & CLIENT_CONNECT_WITH_DB)
    db=strend(passwd)+1;
  if (thd->client_capabilities & CLIENT_INTERACTIVE)
    thd->inactive_timeout=net_interactive_timeout;
  if (thd->client_capabilities & CLIENT_TRANSACTIONS)
    thd->net.return_status= &thd->server_status;
  net->timeout=net_read_timeout;
  if (check_user(thd,COM_CONNECT, user, passwd, db, 1))
    return (-1);
  thd->password=test(passwd[0]);
  return 0;
}











static bool check_user(THD *thd,enum_server_command command, const char *user,
		       const char *passwd, const char *db, bool check_count)
{
  NET *net= &thd->net;
  thd->db=0;

  if (!(thd->user = my_strdup(user, MYF(0))))
  {
    send_error(net,ER_OUT_OF_RESOURCES);
    return 1;
  }
  thd->master_access=acl_getroot(thd->host, thd->ip, thd->user,
				 passwd, thd->scramble, &thd->priv_user,
				 protocol_version == 9 ||
				 !(thd->client_capabilities &
				   CLIENT_LONG_PASSWORD));
  DBUG_PRINT("general",
	     ("Capabilities: %d  packet_length: %d  Host: '%s'  User: '%s'  Using password: %s  Access: %u  db: '%s'",
	      thd->client_capabilities, thd->max_packet_length,
	      thd->host ? thd->host : thd->ip, thd->priv_user,
	      passwd[0] ? "yes": "no",
	      thd->master_access, thd->db ? thd->db : "*none*"));
  if (thd->master_access & NO_ACCESS)
  {
    net_printf(net, ER_ACCESS_DENIED_ERROR,
	       thd->user,
	       thd->host ? thd->host : thd->ip,
	       passwd[0] ? ER(ER_YES) : ER(ER_NO));
    mysql_log.write(thd,COM_CONNECT,ER(ER_ACCESS_DENIED_ERROR),
		    thd->user,
		    thd->host ? thd->host : thd->ip ? thd->ip : "unknown ip",
		    passwd[0] ? ER(ER_YES) : ER(ER_NO));
    return(1);					// Error already given
  }
  if (check_count)
  {
    VOID(pthread_mutex_lock(&LOCK_thread_count));
    bool tmp=(thread_count - delayed_insert_threads >= max_connections &&
	      !(thd->master_access & PROCESS_ACL));
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
    if (tmp)
    {						// Too many connections
      send_error(net, ER_CON_COUNT_ERROR);
      return(1);
    }
  }
  mysql_log.write(thd,command,
		  (thd->priv_user == thd->user ?
		   (char*) "%s@%s on %s" :
		   (char*) "%s@%s as anonymous on %s"),
		  user,
		  thd->host ? thd->host : thd->ip ? thd->ip : "unknown ip",
		  db ? db : (char*) "");
  thd->db_access=0;
  if (db && db[0])
    return test(mysql_change_db(thd,db));
  else
    send_ok(net);				// Ready to handle questions
  return 0;					// ok
}


extern "C"{
void start_embedded_connection(NET * net)
{
    start_embedded_conn1(net);
}
//====================================================================
void embedded_srv_init(void)
{
 DEBUGGER_OFF;
  char hostname[FN_REFLEN];

  my_umask=0660;		// Default umask for new files
  my_umask_dir=0700;		// Default umask for new directories
  MY_INIT((char *)"mysqld");		// init my_sys library & pthreads
  tzset();			// Set tzname

  start_time=time((time_t*) 0);
#ifdef HAVE_TZNAME
#if defined(HAVE_LOCALTIME_R) && defined(_REENTRANT)
  {
    struct tm tm_tmp;
    localtime_r(&start_time,&tm_tmp);
    strmov(time_zone,tzname[tm_tmp.tm_isdst == 1 ? 1 : 0]);
  }
#else
  {
    struct tm *start_tm;
    start_tm=localtime(&start_time);
    strmov(time_zone=tzname[start_tm->tm_isdst == 1 ? 1 : 0]);
  }
#endif
#endif

  if (gethostname(hostname,sizeof(hostname)-4) < 0)
    strmov(hostname,"mysql");
  strmov(pidfile_name,hostname);
  strmov(strcend(pidfile_name,'.'),".pid");	// Add extension
#ifdef DEMO_VERSION
  strcat(server_version,"-demo");
#endif
#ifdef SHAREWARE_VERSION
  strcat(server_version,"-shareware");
#endif
#ifndef DBUG_OFF
  strcat(server_version,"-debug");
#endif
  strcat(server_version,"-library-ver");
#ifdef _CUSTOMSTARTUPCONFIG_
  if (_cust_check_startup())
  {
    /* _cust_check_startup will report startup failure error */
    exit( 1 );
  }
#endif
 // load_defaults("my",load_default_groups,&d_argc, (char***)&d_argv);
  defaults_argv=0;
  mysql_tmpdir=getenv("TMPDIR");	/* Use this if possible */
#ifdef __WIN__
  if (!mysql_tmpdir)
    mysql_tmpdir=getenv("TEMP");
  if (!mysql_tmpdir)
    mysql_tmpdir=getenv("TMP");
#endif
  if (!mysql_tmpdir || !mysql_tmpdir[0])
    mysql_tmpdir=strdup((char*) P_tmpdir);
  set_options();
  fix_paths();

  if (opt_log || opt_update_log || opt_slow_log || opt_bin_log)
    strcat(server_version,"-log");
  DBUG_PRINT("info",("%s  Ver %s for %s on %s\n",my_progname,
		     server_version, SYSTEM_TYPE,MACHINE_TYPE));

  /* These must be set early */

  (void) pthread_cond_init(&COND_thread_count,NULL);
  (void) pthread_mutex_init(&LOCK_mysql_create_db,NULL);
  (void) pthread_mutex_init(&LOCK_Acl,NULL);
  (void) pthread_mutex_init(&LOCK_grant,NULL);
  (void) pthread_mutex_init(&LOCK_open,NULL);
  (void) pthread_mutex_init(&LOCK_thread_count,NULL);
  (void) pthread_mutex_init(&LOCK_mapped_file,NULL);
  (void) pthread_mutex_init(&LOCK_status,NULL);
  (void) pthread_mutex_init(&LOCK_error_log,NULL);
  (void) pthread_mutex_init(&LOCK_delayed_insert,NULL);
  (void) pthread_mutex_init(&LOCK_delayed_status,NULL);
  (void) pthread_mutex_init(&LOCK_delayed_create,NULL);
  (void) pthread_cond_init(&COND_refresh,NULL);
  (void) pthread_cond_init(&COND_thread_cache,NULL);
  (void) pthread_cond_init(&COND_flush_thread_cache,NULL);
  (void) pthread_cond_init(&COND_manager,NULL);
  (void) pthread_mutex_init(&LOCK_manager,NULL);
  (void) pthread_mutex_init(&LOCK_crypt,NULL);
  (void) pthread_mutex_init(&LOCK_bytes_sent,NULL);
  (void) pthread_mutex_init(&LOCK_bytes_received,NULL);
  (void) pthread_mutex_init(&LOCK_timezone,NULL);
  (void) pthread_mutex_init(&LOCK_binlog_update, NULL);
  (void) pthread_mutex_init(&LOCK_slave, NULL);
  (void) pthread_mutex_init(&LOCK_server_id, NULL);
  (void) pthread_cond_init(&COND_binlog_update, NULL);
  (void) pthread_cond_init(&COND_slave_stopped, NULL);

  if (set_default_charset_by_name(default_charset, MYF(MY_WME)))
    unireg_abort(1);
  charsets_list = list_charsets(MYF(MY_COMPILED_SETS|MY_CONFIG_SETS));


  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_setprio(pthread_self(),CONNECT_PRIOR);
  /* Parameter for threads created for connections */
  (void) pthread_attr_init(&connection_attrib);
  (void) pthread_attr_setdetachstate(&connection_attrib,
				     PTHREAD_CREATE_DETACHED);
  pthread_attr_setstacksize(&connection_attrib,thread_stack);

  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_attr_setprio(&connection_attrib,WAIT_PRIOR);
  pthread_attr_setscope(&connection_attrib, PTHREAD_SCOPE_SYSTEM);

#ifdef SET_RLIMIT_NOFILE
  /* connections and databases neads lots of files */
  {
    uint wanted_files=10+(uint) max(max_connections*5,
				    max_connections+table_cache_size*2);
    uint files=set_maximum_open_files(wanted_files);
    if (files && files < wanted_files)		// Some systems return 0
    {
      max_connections=	(ulong) min((files-10),max_connections);
      table_cache_size= (ulong) max((files-10-max_connections)/2,64);
      DBUG_PRINT("warning",
		 ("Changed limits: max_connections: %ld  table_cache: %ld",
		  max_connections,table_cache_size));
      sql_print_error("Warning: Changed limits: max_connections: %ld  table_cache: %ld",max_connections,table_cache_size);
    }
  }
#endif
  unireg_init(opt_specialflag); /* Set up extern variabels */
  init_errmessage();		/* Read error messages from file */
  lex_init();
  item_init();
  mysys_uses_curses=0;
#ifdef USE_REGEX
  regex_init();
#endif
  select_thread=pthread_self();
  select_thread_in_use=1;

  /*
  ** We have enough space for fiddling with the argv, continue
  */
  umask(((~my_umask) & 0666));
//  strcpy(mysql_real_data_home, "/usr/local");
  //if (my_setwd(mysql_real_data_home,MYF(MY_WME)))
  //{
  //  unireg_abort(1);				/* purecov: inspected */
  //}
  //mysql_data_home[0]=FN_CURLIB;		// all paths are relative from here
  //mysql_data_home[1]=0;

  strcpy(get_mysql_data_home(), mysql_real_data_home);

  //server_init();
  table_cache_init();
  hostname_cache_init();
  sql_cache_init();
  randominit(&sql_rand,(ulong) start_time,(ulong) start_time/2);
  reset_floating_point_exceptions();
  init_thr_lock();

  /* Setup log files */
  if (opt_log)
    open_log(&mysql_log, hostname, opt_logname, ".log", LOG_NORMAL);
  if (opt_update_log)
    open_log(&mysql_update_log, hostname, opt_update_logname, "",
	     LOG_NEW);
  if (opt_bin_log)
  {
    if(server_id)
      {
	if (!opt_bin_logname)
	  {
	    char tmp[FN_REFLEN];
	    strnmov(tmp,hostname,FN_REFLEN-5);
	    strmov(strcend(tmp,'.'),"-bin");
	    opt_bin_logname=my_strdup(tmp,MYF(MY_WME));
	  }
	mysql_bin_log.set_index_file_name(opt_binlog_index_name);
	open_log(&mysql_bin_log, hostname, opt_bin_logname, "-bin",
		 LOG_BIN);
      }
    else
      sql_print_error("Server id is not set - binary logging disabled");
  }
  
  if (opt_slow_log)
    open_log(&mysql_slow_log, hostname, opt_slow_logname, "-slow.log",
	     LOG_NORMAL);
  if (ha_init())
  {
    sql_print_error("Can't init databases");
    exit(1);
  }
#ifdef HAVE_MLOCKALL
  if (locked_in_memory && !geteuid())
  {
    ha_key_cache();
    if (mlockall(MCL_CURRENT))
    {
      sql_print_error("Warning: Failed to lock memory. Errno: %d\n",errno);
    }
    else
      locked_in_memory=1;
  }
#else
  locked_in_memory=0;
#endif    

  if (opt_myisam_log)
    (void) mi_log( 1 );
  ft_init_stopwords(ft_precompiled_stopwords);       /* SerG */

  /*
    init signals & alarm
    After this we can't quit by a simple unireg_abort
  */
  error_handler_hook = my_message_sql;
  if (pthread_key_create(&THR_THD,NULL) || pthread_key_create(&THR_NET,NULL) ||
      pthread_key_create(&THR_MALLOC,NULL))
  {
    sql_print_error("Can't create thread-keys");
    exit(1);
  }
//  init_signals();				// Creates pidfile
//SWSOFT+
	opt_noacl = 1;
  if (acl_init(opt_noacl))
  {
    select_thread_in_use=0;
    (void) pthread_kill(signal_thread,MYSQL_KILL_SIGNAL);
    exit(1);
  }
  if (!opt_noacl)
    (void) grant_init();

#ifdef HAVE_DLOPEN
  if (!opt_noacl)
    udf_init();
#endif

  if (opt_bootstrap)
  {
    int error=bootstrap(stdin);
    end_thr_alarm();				// Don't allow alarms
    unireg_abort(error ? 1 : 0);
  }
  if (opt_init_file)
  {
    if (read_init_file(opt_init_file))
    {
      end_thr_alarm();				// Don't allow alarms
      unireg_abort(1);
    }
  }
  (void) thr_setconcurrency(concurrency);	// 10 by default

  if (flush_time && flush_time != ~(ulong) 0L)
  {
    pthread_t hThread;
    if (pthread_create(&hThread,&connection_attrib,handle_manager,0))
      sql_print_error("Warning: Can't create thread to manage maintenance");
  }

  // slave thread
  if(master_host)
  {
    if(server_id)
      {
	pthread_t hThread;
	if(!opt_skip_slave_start &&
	   pthread_create(&hThread, &connection_attrib, handle_slave, 0))
	  sql_print_error("Warning: Can't create thread to handle slave");
      }
    else
      sql_print_error("Server id is not set, slave thread will not be started");
  }

  //printf(ER(ER_READY),my_progname,server_version,"");
  printf("%s initialized.\n", server_version);
  fflush(stdout);


}


void embedded_srv_deinit()
{

  /* (void) pthread_attr_destroy(&connection_attrib); */

  DBUG_PRINT("quit",("Exiting main thread"));

#ifdef EXTRA_DEBUG
  sql_print_error("Before Lock_thread_count");
#endif
  (void) pthread_mutex_lock(&LOCK_thread_count);
  select_thread_in_use=0;			// For close_connections
  (void) pthread_cond_broadcast(&COND_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);
#ifdef EXTRA_DEBUG
  sql_print_error("After lock_thread_count");
#endif

  /* Wait until cleanup is done */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (!ready_to_exit)
  {
    pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);
  my_thread_end();

}
}
int embedded_do_command(NET * net)
{
    THD * thd = (THD *) net ->vio;
    do_command(thd);	
    return 0;
}