libraries/import.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Library that provides common import functions that are used by import plugins
   5  *
   6  * @package phpMyAdmin
   7  */
   8 if (! defined('PHPMYADMIN')) {
   9     exit;
  10 }
  11
  12 /**
  13  * We need to know something about user
  14  */
  15 require_once './libraries/check_user_privileges.lib.php';
  16
  17 /**
  18  * We do this check, DROP DATABASE does not need to be confirmed elsewhere
  19  */
  20 define('PMA_CHK_DROP', 1);
  21
  22 /**
  23  *  Check whether timeout is getting close
  24  *
  25  *  @return boolean true if timeout is close
  26  *  @access public
  27  */
  28 function PMA_checkTimeout()
  29 {
  30     global $timestamp, $maximum_time, $timeout_passed;
  31     if ($maximum_time == 0) {
  32         return FALSE;
  33     } elseif ($timeout_passed) {
  34         return TRUE;
  35     /* 5 in next row might be too much */
  36     } elseif ((time() - $timestamp) > ($maximum_time - 5)) {
  37         $timeout_passed = TRUE;
  38         return TRUE;
  39     } else {
  40         return FALSE;
  41     }
  42 }
  43
  44 /**
  45  *  Detects what compression filse uses
  46  *
  47  *  @param  string filename to check
  48  *  @return string MIME type of compression, none for none
  49  *  @access public
  50  */
  51 function PMA_detectCompression($filepath)
  52 {
  53     $file = @fopen($filepath, 'rb');
  54     if (!$file) {
  55         return FALSE;
  56     }
  57     $test = fread($file, 4);
  58     $len = strlen($test);
  59     fclose($file);
  60     if ($len >= 2 && $test[0] == chr(31) && $test[1] == chr(139)) {
  61         return 'application/gzip';
  62     }
  63     if ($len >= 3 && substr($test, 0, 3) == 'BZh') {
  64         return 'application/bzip2';
  65     }
  66     if ($len >= 4 && $test == "PK\003\004") {
  67         return 'application/zip';
  68     }
  69     return 'none';
  70 }
  71
  72 /**
  73  * Runs query inside import buffer. This is needed to allow displaying
  74  * of last SELECT, SHOW or HANDLER results and similar nice stuff.
  75  *
  76  * @uses    $GLOBALS['finished'] read and write
  77  * @param  string query to run
  78  * @param  string query to display, this might be commented
  79  * @param  bool   whether to use control user for queries
  80  * @access public
  81  */
  82 function PMA_importRunQuery($sql = '', $full = '', $controluser = false)
  83 {
  84     global $import_run_buffer, $go_sql, $complete_query, $display_query,
  85         $sql_query, $my_die, $error, $reload,
  86         $last_query_with_results,
  87         $skip_queries, $executed_queries, $max_sql_len, $read_multiply,
  88         $cfg, $sql_query_disabled, $db, $run_query, $is_superuser;
  89     $read_multiply = 1;
  90     if (isset($import_run_buffer)) {
  91         // Should we skip something?
  92         if ($skip_queries > 0) {
  93             $skip_queries--;
  94         } else {
  95             if (!empty($import_run_buffer['sql']) && trim($import_run_buffer['sql']) != '') {
  96                 $max_sql_len = max($max_sql_len, strlen($import_run_buffer['sql']));
  97                 if (!$sql_query_disabled) {
  98                     $sql_query .= $import_run_buffer['full'];
  99                 }
 100                 if (!$cfg['AllowUserDropDatabase']
 101                  && !$is_superuser
 102                  && preg_match('@^[[:space:]]*DROP[[:space:]]+(IF EXISTS[[:space:]]+)?DATABASE @i', $import_run_buffer['sql'])) {
 103                     $GLOBALS['message'] = PMA_Message::error(__('"DROP DATABASE" statements are disabled.'));
 104                     $error = TRUE;
 105                 } else {
 106                     $executed_queries++;
 107                     if ($run_query && $GLOBALS['finished'] && empty($sql) && !$error && (
 108                             (!empty($import_run_buffer['sql']) && preg_match('/^[\s]*(SELECT|SHOW|HANDLER)/i', $import_run_buffer['sql'])) ||
 109                             ($executed_queries == 1)
 110                             )) {
 111                         $go_sql = TRUE;
 112                         if (!$sql_query_disabled) {
 113                             $complete_query = $sql_query;
 114                             $display_query = $sql_query;
 115                         } else {
 116                             $complete_query = '';
 117                             $display_query = '';
 118                         }
 119                         $sql_query = $import_run_buffer['sql'];
 120                         // If a 'USE <db>' SQL-clause was found, set our current $db to the new one
 121                         list($db, $reload) = PMA_lookForUse($import_run_buffer['sql'], $db, $reload);
 122                     } elseif ($run_query) {
 123                         if ($controluser) {
 124                             $result = PMA_query_as_controluser($import_run_buffer['sql']);
 125                         } else {
 126                             $result = PMA_DBI_try_query($import_run_buffer['sql']);
 127                         }
 128                         $msg = '# ';
 129                         if ($result === FALSE) { // execution failed
 130                             if (!isset($my_die)) {
 131                                 $my_die = array();
 132                             }
 133                             $my_die[] = array('sql' => $import_run_buffer['full'], 'error' => PMA_DBI_getError());
 134
 135                             if ($cfg['VerboseMultiSubmit']) {
 136                                 $msg .= __('Error');
 137                             }
 138
 139                             if (!$cfg['IgnoreMultiSubmitErrors']) {
 140                                 $error = TRUE;
 141                                 return;
 142                             }
 143                         } elseif ($cfg['VerboseMultiSubmit']) {
 144                             $a_num_rows = (int)@PMA_DBI_num_rows($result);
 145                             $a_aff_rows = (int)@PMA_DBI_affected_rows();
 146                             if ($a_num_rows > 0) {
 147                                 $msg .= __('Rows'). ': ' . $a_num_rows;
 148                                 $last_query_with_results = $import_run_buffer['sql'];
 149                             } elseif ($a_aff_rows > 0) {
 150                                 $message = PMA_Message::affected_rows($a_aff_rows);
 151                                 $msg .= $message->getMessage();
 152                             } else {
 153                                 $msg .= __('MySQL returned an empty result set (i.e. zero rows).');
 154                             }
 155                         }
 156                         if (!$sql_query_disabled) {
 157                             $sql_query .= $msg . "\n";
 158                         }
 159
 160                         // If a 'USE <db>' SQL-clause was found and the query succeeded, set our current $db to the new one
 161                         if ($result != FALSE) {
 162                             list($db, $reload) = PMA_lookForUse($import_run_buffer['sql'], $db, $reload);
 163                         }
 164
 165                         if ($result != FALSE && preg_match('@^[\s]*(DROP|CREATE)[\s]+(IF EXISTS[[:space:]]+)?(TABLE|DATABASE)[[:space:]]+(.+)@im', $import_run_buffer['sql'])) {
 166                             $reload = TRUE;
 167                         }
 168                     } // end run query
 169                 } // end if not DROP DATABASE
 170             } // end non empty query
 171             elseif (!empty($import_run_buffer['full'])) {
 172                 if ($go_sql) {
 173                     $complete_query .= $import_run_buffer['full'];
 174                     $display_query .= $import_run_buffer['full'];
 175                 } else {
 176                     if (!$sql_query_disabled) {
 177                         $sql_query .= $import_run_buffer['full'];
 178                     }
 179                 }
 180             }
 181             // check length of query unless we decided to pass it to sql.php
 182             // (if $run_query is false, we are just displaying so show
 183             // the complete query in the textarea)
 184             if (! $go_sql && $run_query) {
 185                 if ($cfg['VerboseMultiSubmit'] && ! empty($sql_query)) {
 186                     if (strlen($sql_query) > 50000 || $executed_queries > 50 || $max_sql_len > 1000) {
 187                         $sql_query = '';
 188                         $sql_query_disabled = TRUE;
 189                     }
 190                 } else {
 191                     if (strlen($sql_query) > 10000 || $executed_queries > 10 || $max_sql_len > 500) {
 192                         $sql_query = '';
 193                         $sql_query_disabled = TRUE;
 194                     }
 195                 }
 196             }
 197         } // end do query (no skip)
 198     } // end buffer exists
 199
 200     // Do we have something to push into buffer?
 201     if (!empty($sql) || !empty($full)) {
 202         $import_run_buffer = array('sql' => $sql, 'full' => $full);
 203     } else {
 204         unset($GLOBALS['import_run_buffer']);
 205     }
 206 }
 207
 208 /**
 209  * Looks for the presence of USE to possibly change current db
 210  *
 211  * @param  string buffer to examine
 212  * @param  string current db
 213  * @param  boolean reload
 214  * @return array (current or new db, whether to reload)
 215  * @access public
 216  */
 217 function PMA_lookForUse($buffer, $db, $reload)
 218 {
 219     if (preg_match('@^[\s]*USE[[:space:]]*([\S]+)@i', $buffer, $match)) {
 220         $db = trim($match[1]);
 221         $db = trim($db,';'); // for example, USE abc;
 222         $reload = TRUE;
 223     }
 224     return(array($db, $reload));
 225 }
 226
 227
 228 /**
 229  * Returns next part of imported file/buffer
 230  *
 231  * @uses    $GLOBALS['offset'] read and write
 232  * @uses    $GLOBALS['import_file'] read only
 233  * @uses    $GLOBALS['import_text'] read and write
 234  * @uses    $GLOBALS['finished'] read and write
 235  * @uses    $GLOBALS['read_limit'] read only
 236  * @param  integer size of buffer to read (this is maximal size
 237  *                  function will return)
 238  * @return string part of file/buffer
 239  * @access public
 240  */
 241 function PMA_importGetNextChunk($size = 32768)
 242 {
 243     global $compression, $import_handle, $charset_conversion, $charset_of_file,
 244         $charset, $read_multiply;
 245
 246     // Add some progression while reading large amount of data
 247     if ($read_multiply <= 8) {
 248         $size *= $read_multiply;
 249     } else {
 250         $size *= 8;
 251     }
 252     $read_multiply++;
 253
 254     // We can not read too much
 255     if ($size > $GLOBALS['read_limit']) {
 256         $size = $GLOBALS['read_limit'];
 257     }
 258
 259     if (PMA_checkTimeout()) {
 260         return FALSE;
 261     }
 262     if ($GLOBALS['finished']) {
 263         return TRUE;
 264     }
 265
 266     if ($GLOBALS['import_file'] == 'none') {
 267         // Well this is not yet supported and tested, but should return content of textarea
 268         if (strlen($GLOBALS['import_text']) < $size) {
 269             $GLOBALS['finished'] = TRUE;
 270             return $GLOBALS['import_text'];
 271         } else {
 272             $r = substr($GLOBALS['import_text'], 0, $size);
 273             $GLOBALS['offset'] += $size;
 274             $GLOBALS['import_text'] = substr($GLOBALS['import_text'], $size);
 275             return $r;
 276         }
 277     }
 278
 279     switch ($compression) {
 280         case 'application/bzip2':
 281             $result = bzread($import_handle, $size);
 282             $GLOBALS['finished'] = feof($import_handle);
 283             break;
 284         case 'application/gzip':
 285             $result = gzread($import_handle, $size);
 286             $GLOBALS['finished'] = feof($import_handle);
 287             break;
 288         case 'application/zip':
 289             $result = substr($GLOBALS['import_text'], 0, $size);
 290             $GLOBALS['import_text'] = substr($GLOBALS['import_text'], $size);
 291             $GLOBALS['finished'] = empty($GLOBALS['import_text']);
 292             break;
 293         case 'none':
 294             $result = fread($import_handle, $size);
 295             $GLOBALS['finished'] = feof($import_handle);
 296             break;
 297     }
 298     $GLOBALS['offset'] += $size;
 299
 300     if ($charset_conversion) {
 301         return PMA_convert_string($charset_of_file, $charset, $result);
 302     } else {
 303         /**
 304          * Skip possible byte order marks (I do not think we need more
 305          * charsets, but feel free to add more, you can use wikipedia for
 306          * reference: <http://en.wikipedia.org/wiki/Byte_Order_Mark>)
 307          *
 308          * @todo BOM could be used for charset autodetection
 309          */
 310         if ($GLOBALS['offset'] == $size) {
 311             // UTF-8
 312             if (strncmp($result, "\xEF\xBB\xBF", 3) == 0) {
 313                 $result = substr($result, 3);
 314             // UTF-16 BE, LE
 315             } elseif (strncmp($result, "\xFE\xFF", 2) == 0 || strncmp($result, "\xFF\xFE", 2) == 0) {
 316                 $result = substr($result, 2);
 317             }
 318         }
 319         return $result;
 320     }
 321 }
 322
 323 /**
 324  * Returns the "Excel" column name (i.e. 1 = "A", 26 = "Z", 27 = "AA", etc.)
 325  *
 326  * This functions uses recursion to build the Excel column name.
 327  *
 328  * The column number (1-26) is converted to the responding ASCII character (A-Z) and returned.
 329  *
 330  * If the column number is bigger than 26 (= num of letters in alfabet),
 331  * an extra character needs to be added. To find this extra character, the number is divided by 26
 332  * and this value is passed to another instance of the same function (hence recursion).
 333  * In that new instance the number is evaluated again, and if it is still bigger than 26, it is divided again
 334  * and passed to another instance of the same function. This continues until the number is smaller than 26.
 335  * Then the last called function returns the corresponding ASCII character to the function that called it.
 336  * Each time a called function ends an extra character is added to the column name.
 337  * When the first function is reached, the last character is addded and the complete column name is returned.
 338  *
 339  * @access  public
 340  *
 341  * @uses    chr()
 342  * @param   int $num
 343  * @return  string The column's "Excel" name
 344  */
 345 function PMA_getColumnAlphaName($num)
 346 {
 347         $A = 65; // ASCII value for capital "A"
 348         $col_name = "";
 349
 350         if ($num > 26) {
 351                 $div = (int)($num / 26);
 352                 $remain = (int)($num % 26);
 353
 354                 // subtract 1 of divided value in case the modulus is 0,
 355                 // this is necessary because A-Z has no 'zero'
 356                 if ($remain == 0) {
 357                         $div--;
 358                 }
 359
 360                 // recursive function call
 361                 $col_name = PMA_getColumnAlphaName($div);
 362                 // use modulus as new column number
 363                 $num = $remain;
 364         }
 365
 366         if ($num == 0) {
 367                 // use 'Z' if column number is 0,
 368                 // this is necessary because A-Z has no 'zero'
 369                 $col_name .= chr(($A + 26) - 1);
 370         } else {
 371                 // convert column number to ASCII character
 372                 $col_name .= chr(($A + $num) - 1);
 373         }
 374
 375         return $col_name;
 376 }
 377
 378 /**
 379  * Returns the column number based on the Excel name.
 380  * So "A" = 1, "Z" = 26, "AA" = 27, etc.
 381  *
 382  * Basicly this is a base26 (A-Z) to base10 (0-9) conversion.
 383  * It iterates through all characters in the column name and
 384  * calculates the corresponding value, based on character value
 385  * (A = 1, ..., Z = 26) and position in the string.
 386  *
 387  * @access  public
 388  *
 389  * @uses    strtoupper()
 390  * @uses    strlen()
 391  * @uses    ord()
 392  * @param   string $name (i.e. "A", or "BC", etc.)
 393  * @return  int The column number
 394  */
 395 function PMA_getColumnNumberFromName($name) {
 396     if (!empty($name)) {
 397         $name = strtoupper($name);
 398         $num_chars = strlen($name);
 399         $column_number = 0;
 400         for ($i = 0; $i < $num_chars; ++$i) {
 401                 // read string from back to front
 402                 $char_pos = ($num_chars - 1) - $i;
 403
 404                 // convert capital character to ASCII value
 405                 // and subtract 64 to get corresponding decimal value
 406                 // ASCII value of "A" is 65, "B" is 66, etc.
 407                 // Decimal equivalent of "A" is 1, "B" is 2, etc.
 408                 $number = (ord($name[$char_pos]) - 64);
 409
 410                 // base26 to base10 conversion : multiply each number
 411                 // with corresponding value of the position, in this case
 412                 // $i=0 : 1; $i=1 : 26; $i=2 : 676; ...
 413                 $column_number += $number * pow(26,$i);
 414         }
 415         return $column_number;
 416     } else {
 417         return 0;
 418     }
 419 }
 420
 421 /**
 422  * Constants definitions
 423  */
 424
 425 /* MySQL type defs */
 426 define("NONE",      0);
 427 define("VARCHAR",   1);
 428 define("INT",       2);
 429 define("DECIMAL",   3);
 430 define("BIGINT",    4);
 431
 432 /* Decimal size defs */
 433 define("M",         0);
 434 define("D",         1);
 435 define("FULL",      2);
 436
 437 /* Table array defs */
 438 define("TBL_NAME",  0);
 439 define("COL_NAMES", 1);
 440 define("ROWS",      2);
 441
 442 /* Analysis array defs */
 443 define("TYPES",     0);
 444 define("SIZES",     1);
 445
 446 /**
 447  * Obtains the precision (total # of digits) from a size of type decimal
 448  *
 449  *
 450  * @access  public
 451  *
 452  * @uses    substr()
 453  * @uses    strpos()
 454  * @param   string $last_cumulative_size
 455  * @return  int Precision of the given decimal size notation
 456  */
 457 function PMA_getM($last_cumulative_size) {
 458     return (int)substr($last_cumulative_size, 0, strpos($last_cumulative_size, ","));
 459 }
 460
 461 /**
 462  * Obtains the scale (# of digits to the right of the decimal point) from a size of type decimal
 463  *
 464  *
 465  * @access  public
 466  *
 467  * @uses    substr()
 468  * @uses    strpos()
 469  * @uses    strlen()
 470  * @param   string $last_cumulative_size
 471  * @return  int Scale of the given decimal size notation
 472  */
 473 function PMA_getD($last_cumulative_size) {
 474         return (int)substr($last_cumulative_size, (strpos($last_cumulative_size, ",") + 1), (strlen($last_cumulative_size) - strpos($last_cumulative_size, ",")));
 475 }
 476
 477 /**
 478  * Obtains the decimal size of a given cell
 479  *
 480  *
 481  * @access  public
 482  *
 483  * @uses    strlen()
 484  * @uses    strpos()
 485  * @param   string &$cell
 486  * @return  array Contains the precision, scale, and full size representation of the given decimal cell
 487  */
 488 function PMA_getDecimalSize(&$cell) {
 489     $curr_size = strlen((string)$cell);
 490     $decPos = strpos($cell, ".");
 491     $decPrecision = ($curr_size - 1) - $decPos;
 492
 493     $m = $curr_size - 1;
 494     $d = $decPrecision;
 495
 496     return array($m, $d, ($m . "," . $d));
 497 }
 498
 499 /**
 500  * Obtains the size of the given cell
 501  *
 502  *
 503  * @todo    Handle the error cases more elegantly
 504  *
 505  * @access  public
 506  *
 507  * @uses    M
 508  * @uses    D
 509  * @uses    FULL
 510  * @uses    VARCHAR
 511  * @uses    DECIMAL
 512  * @uses    BIGINT
 513  * @uses    INT
 514  * @uses    NONE
 515  * @uses    strcmp()
 516  * @uses    strlen()
 517  * @uses    PMA_getM()
 518  * @uses    PMA_getD()
 519  * @uses    PMA_getDecimalSize()
 520  * @param   string $last_cumulative_size    Last cumulative column size
 521  * @param   int    $last_cumulative_type    Last cumulative column type  (NONE or VARCHAR or DECIMAL or INT or BIGINT)
 522  * @param   int    $curr_type               Type of the current cell     (NONE or VARCHAR or DECIMAL or INT or BIGINT)
 523  * @param   string &$cell                   The current cell
 524  * @return  string                          Size of the given cell in the type-appropriate format
 525  */
 526 function PMA_detectSize($last_cumulative_size, $last_cumulative_type, $curr_type, &$cell) {
 527         $curr_size = strlen((string)$cell);
 528
 529     /**
 530      * If the cell is NULL, don't treat it as a varchar
 531      */
 532     if (! strcmp('NULL', $cell)) {
 533         return $last_cumulative_size;
 534     }
 535     /**
 536      * What to do if the current cell is of type VARCHAR
 537      */
 538         elseif ($curr_type == VARCHAR) {
 539         /**
 540          * The last cumulative type was VARCHAR
 541          */
 542                 if ($last_cumulative_type == VARCHAR) {
 543                         if ($curr_size >= $last_cumulative_size) {
 544                                 return $curr_size;
 545             } else {
 546                                 return $last_cumulative_size;
 547             }
 548                 }
 549         /**
 550          * The last cumulative type was DECIMAL
 551          */
 552         elseif ($last_cumulative_type == DECIMAL) {
 553             $oldM = PMA_getM($last_cumulative_size);
 554
 555             if ($curr_size >= $oldM) {
 556                 return $curr_size;
 557             } else {
 558                 return $oldM;
 559             }
 560                 }
 561         /**
 562          * The last cumulative type was BIGINT or INT
 563          */
 564         elseif ($last_cumulative_type == BIGINT || $last_cumulative_type == INT) {
 565             if ($curr_size >= $last_cumulative_size) {
 566                 return $curr_size;
 567             } else {
 568                 return $last_cumulative_size;
 569             }
 570                 }
 571         /**
 572          * This is the first row to be analyzed
 573          */
 574         elseif (! isset($last_cumulative_type) || $last_cumulative_type == NONE) {
 575             return $curr_size;
 576         }
 577         /**
 578          * An error has DEFINITELY occurred
 579          */
 580         else {
 581             /**
 582              * TODO: Handle this MUCH more elegantly
 583              */
 584
 585             return -1;
 586         }
 587         }
 588     /**
 589      * What to do if the current cell is of type DECIMAL
 590      */
 591     elseif ($curr_type == DECIMAL) {
 592         /**
 593          * The last cumulative type was VARCHAR
 594          */
 595                 if ($last_cumulative_type == VARCHAR) {
 596             /* Convert $last_cumulative_size from varchar to decimal format */
 597                     $size = PMA_getDecimalSize($cell);
 598
 599                     if ($size[M] >= $last_cumulative_size) {
 600                         return $size[M];
 601             } else {
 602                     return $last_cumulative_size;
 603             }
 604                 }
 605         /**
 606          * The last cumulative type was DECIMAL
 607          */
 608         elseif ($last_cumulative_type == DECIMAL) {
 609                     $size = PMA_getDecimalSize($cell);
 610
 611                     $oldM = PMA_getM($last_cumulative_size);
 612                     $oldD = PMA_getD($last_cumulative_size);
 613
 614                     /* New val if M or D is greater than current largest */
 615                     if ($size[M] > $oldM || $size[D] > $oldD) {
 616                             /* Take the largest of both types */
 617                             return (string)((($size[M] > $oldM) ? $size[M] : $oldM) . "," . (($size[D] > $oldD) ? $size[D] : $oldD));
 618             } else {
 619                             return $last_cumulative_size;
 620             }
 621                 }
 622         /**
 623          * The last cumulative type was BIGINT or INT
 624          */
 625         elseif ($last_cumulative_type == BIGINT || $last_cumulative_type == INT) {
 626                     /* Convert $last_cumulative_size from int to decimal format */
 627                     $size = PMA_getDecimalSize($cell);
 628
 629                     if ($size[M] >= $last_cumulative_size) {
 630                         return $size[FULL];
 631             } else {
 632                     return ($last_cumulative_size.",".$size[D]);
 633             }
 634                 }
 635         /**
 636          * This is the first row to be analyzed
 637          */
 638         elseif (! isset($last_cumulative_type) || $last_cumulative_type == NONE) {
 639             /* First row of the column */
 640                     $size = PMA_getDecimalSize($cell);
 641
 642                     return $size[FULL];
 643                 }
 644         /**
 645          * An error has DEFINITELY occurred
 646          */
 647                 else {
 648             /**
 649              * TODO: Handle this MUCH more elegantly
 650              */
 651
 652             return -1;
 653         }
 654         }
 655     /**
 656      * What to do if the current cell is of type BIGINT or INT
 657      */
 658     elseif ($curr_type == BIGINT || $curr_type == INT) {
 659         /**
 660          * The last cumulative type was VARCHAR
 661          */
 662                 if ($last_cumulative_type == VARCHAR) {
 663                     if ($curr_size >= $last_cumulative_size) {
 664                         return $curr_size;
 665             } else {
 666                     return $last_cumulative_size;
 667             }
 668                 }
 669         /**
 670          * The last cumulative type was DECIMAL
 671          */
 672         elseif ($last_cumulative_type == DECIMAL) {
 673             $oldM = PMA_getM($last_cumulative_size);
 674                     $oldD = PMA_getD($last_cumulative_size);
 675                     $oldInt = $oldM - $oldD;
 676                     $newInt = strlen((string)$cell);
 677
 678                     /* See which has the larger integer length */
 679                     if ($oldInt >= $newInt) {
 680                             /* Use old decimal size */
 681                             return $last_cumulative_size;
 682             } else {
 683                             /* Use $newInt + $oldD as new M */
 684                             return (($newInt + $oldD) . "," . $oldD);
 685             }
 686             }
 687         /**
 688          * The last cumulative type was BIGINT or INT
 689          */
 690         elseif ($last_cumulative_type == BIGINT || $last_cumulative_type == INT) {
 691                     if ($curr_size >= $last_cumulative_size) {
 692                         return $curr_size;
 693             } else {
 694                     return $last_cumulative_size;
 695             }
 696                 }
 697         /**
 698          * This is the first row to be analyzed
 699          */
 700         elseif (!isset($last_cumulative_type) || $last_cumulative_type == NONE) {
 701             return $curr_size;
 702         }
 703         /**
 704          * An error has DEFINITELY occurred
 705          */
 706                 else {
 707             /**
 708              * TODO: Handle this MUCH more elegantly
 709              */
 710
 711             return -1;
 712         }
 713         }
 714     /**
 715      * An error has DEFINITELY occurred
 716      */
 717         else {
 718         /**
 719          * TODO: Handle this MUCH more elegantly
 720          */
 721
 722         return -1;
 723     }
 724 }
 725
 726 /**
 727  * Determines what MySQL type a cell is
 728  *
 729  *
 730  * @access  public
 731  *
 732  * @uses    DECIMAL
 733  * @uses    BIGINT
 734  * @uses    INT
 735  * @uses    VARCHAR
 736  * @uses    NONE
 737  * @uses    is_numeric()
 738  * @uses    strcmp()
 739  * @uses    strpos()
 740  * @uses    substr_count()
 741  * @param   int    $last_cumulative_type  Last cumulative column type  (VARCHAR or INT or BIGINT or DECIMAL or NONE)
 742  * @param   string &$cell                 String representation of the cell for which a best-fit type is to be determined
 743  * @return  int                           The MySQL type representation (VARCHAR or INT or BIGINT or DECIMAL or NONE)
 744  */
 745 function PMA_detectType($last_cumulative_type, &$cell) {
 746     /**
 747      * If numeric, determine if decimal, int or bigint
 748      * Else, we call it varchar for simplicity
 749      */
 750
 751     if (! strcmp('NULL', $cell)) {
 752         if ($last_cumulative_type === NULL || $last_cumulative_type == NONE) {
 753             return NONE;
 754         } else {
 755             return $last_cumulative_type;
 756         }
 757     } elseif (is_numeric($cell)) {
 758         if ($cell == (string)(float)$cell && strpos($cell, ".") !== false && substr_count($cell, ".") == 1) {
 759             return DECIMAL;
 760         } else {
 761                 if (abs($cell) > 2147483647) {
 762                         return BIGINT;
 763                 } else {
 764                         return INT;
 765                 }
 766         }
 767     } else {
 768         return VARCHAR;
 769     }
 770 }
 771
 772 /**
 773  * Determines if the column types are int, decimal, or string
 774  *
 775  *
 776  * @link http://wiki.phpmyadmin.net/pma/Devel:Import
 777  *
 778  * @todo    Handle the error case more elegantly
 779  *
 780  * @access  public
 781  *
 782  * @uses    TBL_NAME
 783  * @uses    COL_NAMES
 784  * @uses    ROWS
 785  * @uses    VARCHAR
 786  * @uses    DECIMAL
 787  * @uses    BIGINT
 788  * @uses    INT
 789  * @uses    NONE
 790  * @uses    count()
 791  * @uses    is_array()
 792  * @uses    PMA_detectType()
 793  * @uses    PMA_detectSize()
 794  * @param   &$table  array(string $table_name, array $col_names, array $rows)
 795  * @return  array    array(array $types, array $sizes)
 796  */
 797 function PMA_analyzeTable(&$table) {
 798         /* Get number of rows in table */
 799         $numRows = count($table[ROWS]);
 800         /* Get number of columns */
 801         $numCols = count($table[COL_NAMES]);
 802         /* Current type for each column */
 803         $types = array();
 804         $sizes = array();
 805
 806         /* Initialize $sizes to all 0's */
 807         for ($i = 0; $i < $numCols; ++$i) {
 808                 $sizes[$i] = 0;
 809         }
 810
 811     /* Initialize $types to NONE */
 812     for ($i = 0; $i < $numCols; ++$i) {
 813         $types[$i] = NONE;
 814     }
 815
 816         /* Temp vars */
 817         $curr_type = NONE;
 818         $curr_size = 0;
 819
 820         /* If the passed array is not of the correct form, do not process it */
 821         if (is_array($table) && ! is_array($table[TBL_NAME]) && is_array($table[COL_NAMES]) && is_array($table[ROWS])) {
 822                 /* Analyze each column */
 823                 for ($i = 0; $i < $numCols; ++$i) {
 824                         /* Analyze the column in each row */
 825                         for ($j = 0; $j < $numRows; ++$j) {
 826                                 /* Determine type of the current cell */
 827                                 $curr_type = PMA_detectType($types[$i], $table[ROWS][$j][$i]);
 828                                 /* Determine size of the current cell */
 829                                 $sizes[$i] = PMA_detectSize($sizes[$i], $types[$i], $curr_type, $table[ROWS][$j][$i]);
 830
 831                                 /**
 832                                  * If a type for this column has already been declared,
 833                                  * only alter it if it was a number and a varchar was found
 834                                  */
 835                                 if ($curr_type != NONE) {
 836                                         if ($curr_type == VARCHAR) {
 837                                                 $types[$i] = VARCHAR;
 838                                         } else if ($curr_type == DECIMAL) {
 839                                                 if ($types[$i] != VARCHAR) {
 840                                                         $types[$i] = DECIMAL;
 841                                                 }
 842                                         } else if ($curr_type == BIGINT) {
 843                                                 if ($types[$i] != VARCHAR && $types[$i] != DECIMAL) {
 844                                                         $types[$i] = BIGINT;
 845                                                 }
 846                                         } else if ($curr_type == INT) {
 847                                                 if ($types[$i] != VARCHAR && $types[$i] != DECIMAL && $types[$i] != BIGINT) {
 848                                                         $types[$i] = INT;
 849                                                 }
 850                                         }
 851                                 }
 852                         }
 853                 }
 854
 855         /* Check to ensure that all types are valid */
 856         $len = count($types);
 857         for ($n = 0; $n < $len; ++$n) {
 858             if (! strcmp(NONE, $types[$n])) {
 859                 $types[$n] = VARCHAR;
 860                 $sizes[$n] = '10';
 861             }
 862         }
 863
 864                 return array($types, $sizes);
 865         }
 866         else
 867         {
 868         /**
 869          * TODO: Handle this better
 870          */
 871
 872                 return false;
 873         }
 874 }
 875
 876 /* Needed to quell the beast that is PMA_Message */
 877 $import_notice = NULL;
 878
 879 /**
 880  * Builds and executes SQL statements to create the database and tables
 881  * as necessary, as well as insert all the data.
 882  *
 883  *
 884  * @link http://wiki.phpmyadmin.net/pma/Devel:Import
 885  *
 886  * @access  public
 887  *
 888  * @uses    TBL_NAME
 889  * @uses    COL_NAMES
 890  * @uses    ROWS
 891  * @uses    TYPES
 892  * @uses    SIZES
 893  * @uses    strcmp()
 894  * @uses    count()
 895  * @uses    preg_match()
 896  * @uses    preg_replace()
 897  * @uses    PMA_isView()
 898  * @uses    PMA_backquote()
 899  * @uses    PMA_importRunQuery()
 900  * @uses    PMA_generate_common_url()
 901  * @uses    PMA_Message::notice()
 902  * @param   string  $db_name                 Name of the database
 903  * @param   array   &$tables                 Array of tables for the specified database
 904  * @param   array   &$analyses = NULL        Analyses of the tables
 905  * @param   array   &$additional_sql = NULL  Additional SQL statements to be executed
 906  * @param   array   $options = NULL          Associative array of options
 907  * @return  void
 908  */
 909 function PMA_buildSQL($db_name, &$tables, &$analyses = NULL, &$additional_sql = NULL, $options = NULL) {
 910     /* Take care of the options */
 911     if (isset($options['db_collation'])) {
 912         $collation = $options['db_collation'];
 913     } else {
 914         $collation = "utf8_general_ci";
 915     }
 916
 917     if (isset($options['db_charset'])) {
 918         $charset = $options['db_charset'];
 919     } else {
 920         $charset = "utf8";
 921     }
 922
 923     if (isset($options['create_db'])) {
 924         $create_db = $options['create_db'];
 925     } else {
 926         $create_db = true;
 927     }
 928
 929     /* Create SQL code to handle the database */
 930     $sql = array();
 931
 932     if ($create_db) {
 933         $sql[] = "CREATE DATABASE IF NOT EXISTS " . PMA_backquote($db_name) . " DEFAULT CHARACTER SET " . $charset . " COLLATE " . $collation;
 934     }
 935
 936     /**
 937      * The calling plug-in should include this statement, if necessary, in the $additional_sql parameter
 938      *
 939      * $sql[] = "USE " . PMA_backquote($db_name);
 940      */
 941
 942     /* Execute the SQL statements create above */
 943     $sql_len = count($sql);
 944     for ($i = 0; $i < $sql_len; ++$i) {
 945         PMA_importRunQuery($sql[$i], $sql[$i]);
 946     }
 947
 948     /* No longer needed */
 949     unset($sql);
 950
 951     /* Run the $additional_sql statements supplied by the caller plug-in */
 952     if ($additional_sql != NULL) {
 953         /* Clean the SQL first */
 954         $additional_sql_len = count($additional_sql);
 955
 956         /**
 957          * Only match tables for now, because CREATE IF NOT EXISTS
 958          * syntax is lacking or nonexisting for views, triggers,
 959          * functions, and procedures.
 960          *
 961          * See: http://bugs.mysql.com/bug.php?id=15287
 962          *
 963          * To the best of my knowledge this is still an issue.
 964          *
 965          * $pattern = 'CREATE (TABLE|VIEW|TRIGGER|FUNCTION|PROCEDURE)';
 966          */
 967         $pattern = '/CREATE .*(TABLE)/';
 968         $replacement = 'CREATE \\1 IF NOT EXISTS';
 969
 970         /* Change CREATE statements to CREATE IF NOT EXISTS to support inserting into existing structures */
 971         for ($i = 0; $i < $additional_sql_len; ++$i) {
 972             $additional_sql[$i] = preg_replace($pattern, $replacement, $additional_sql[$i]);
 973             /* Execute the resulting statements */
 974             PMA_importRunQuery($additional_sql[$i], $additional_sql[$i]);
 975         }
 976     }
 977
 978     if ($analyses != NULL) {
 979         $type_array = array(NONE => "NULL", VARCHAR => "varchar", INT => "int", DECIMAL => "decimal", BIGINT => "bigint");
 980
 981         /* TODO: Do more checking here to make sure they really are matched */
 982         if (count($tables) != count($analyses)) {
 983             exit();
 984         }
 985
 986         /* Create SQL code to create the tables */
 987         $tempSQLStr = "";
 988         $num_tables = count($tables);
 989         for ($i = 0; $i < $num_tables; ++$i) {
 990             $num_cols = count($tables[$i][COL_NAMES]);
 991             $tempSQLStr = "CREATE TABLE IF NOT EXISTS " . PMA_backquote($db_name) . '.' . PMA_backquote($tables[$i][TBL_NAME]) . " (";
 992             for ($j = 0; $j < $num_cols; ++$j) {
 993                 $size = $analyses[$i][SIZES][$j];
 994                 if ((int)$size == 0) {
 995                     $size = 10;
 996                 }
 997
 998                 $tempSQLStr .= PMA_backquote($tables[$i][COL_NAMES][$j]) . " " . $type_array[$analyses[$i][TYPES][$j]] . "(" . $size . ")";
 999
1000                 if ($j != (count($tables[$i][COL_NAMES]) - 1)) {
1001                     $tempSQLStr .= ", ";
1002                 }
1003             }
1004             $tempSQLStr .= ") ENGINE=MyISAM DEFAULT CHARACTER SET " . $charset . " COLLATE " . $collation . ";";
1005
1006             /**
1007              * Each SQL statement is executed immediately
1008              * after it is formed so that we don't have
1009              * to store them in a (possibly large) buffer
1010              */
1011             PMA_importRunQuery($tempSQLStr, $tempSQLStr);
1012         }
1013     }
1014
1015     /**
1016      * Create the SQL statements to insert all the data
1017      *
1018      * Only one insert query is formed for each table
1019      */
1020         $tempSQLStr = "";
1021         $col_count = 0;
1022     $num_tables = count($tables);
1023         for ($i = 0; $i < $num_tables; ++$i) {
1024         $num_cols = count($tables[$i][COL_NAMES]);
1025         $num_rows = count($tables[$i][ROWS]);
1026
1027         $tempSQLStr = "INSERT INTO " . PMA_backquote($db_name) . '.' . PMA_backquote($tables[$i][TBL_NAME]) . " (";
1028
1029         for ($m = 0; $m < $num_cols; ++$m) {
1030             $tempSQLStr .= PMA_backquote($tables[$i][COL_NAMES][$m]);
1031
1032             if ($m != ($num_cols - 1)) {
1033                 $tempSQLStr .= ", ";
1034             }
1035         }
1036
1037         $tempSQLStr .= ") VALUES ";
1038
1039                 for ($j = 0; $j < $num_rows; ++$j) {
1040             $tempSQLStr .= "(";
1041
1042                         for ($k = 0; $k < $num_cols; ++$k) {
1043                 if ($analyses != NULL) {
1044                     $is_varchar = ($analyses[$i][TYPES][$col_count] === VARCHAR);
1045                 } else {
1046                     $is_varchar = !is_numeric($tables[$i][ROWS][$j][$k]);
1047                 }
1048
1049                 /* Don't put quotes around NULL fields */
1050                 if (! strcmp($tables[$i][ROWS][$j][$k], 'NULL')) {
1051                     $is_varchar = false;
1052                 }
1053
1054                 $tempSQLStr .= (($is_varchar) ? "'" : "");
1055                                 $tempSQLStr .= PMA_sqlAddslashes((string)$tables[$i][ROWS][$j][$k]);
1056                                 $tempSQLStr .= (($is_varchar) ? "'" : "");
1057
1058                                 if ($k != ($num_cols - 1)) {
1059                                         $tempSQLStr .= ", ";
1060                 }
1061
1062                                 if ($col_count == ($num_cols - 1)) {
1063                                         $col_count = 0;
1064                                 } else {
1065                                         $col_count++;
1066                 }
1067
1068                 /* Delete the cell after we are done with it */
1069                 unset($tables[$i][ROWS][$j][$k]);
1070                         }
1071
1072             $tempSQLStr .= ")";
1073
1074             if ($j != ($num_rows - 1)) {
1075                 $tempSQLStr .= ",\n ";
1076             }
1077
1078                         $col_count = 0;
1079             /* Delete the row after we are done with it */
1080             unset($tables[$i][ROWS][$j]);
1081                 }
1082
1083         $tempSQLStr .= ";";
1084
1085         /**
1086          * Each SQL statement is executed immediately
1087          * after it is formed so that we don't have
1088          * to store them in a (possibly large) buffer
1089          */
1090         PMA_importRunQuery($tempSQLStr, $tempSQLStr);
1091         }
1092
1093     /* No longer needed */
1094     unset($tempSQLStr);
1095
1096     /**
1097      * A work in progress
1098      */
1099
1100     /* Add the viewable structures from $additional_sql to $tables so they are also displayed */
1101
1102     $view_pattern = '@VIEW `[^`]+`\.`([^`]+)@';
1103     $table_pattern = '@CREATE TABLE IF NOT EXISTS `([^`]+)`@';
1104     /* Check a third pattern to make sure its not a "USE `db_name`;" statement */
1105
1106     $regs = array();
1107
1108     $inTables = false;
1109
1110     $additional_sql_len = count($additional_sql);
1111     for ($i = 0; $i < $additional_sql_len; ++$i) {
1112         preg_match($view_pattern, $additional_sql[$i], $regs);
1113
1114         if (count($regs) == 0) {
1115             preg_match($table_pattern, $additional_sql[$i], $regs);
1116         }
1117
1118         if (count($regs)) {
1119             for ($n = 0; $n < $num_tables; ++$n) {
1120                 if (!strcmp($regs[1], $tables[$n][TBL_NAME])) {
1121                     $inTables = true;
1122                     break;
1123                 }
1124             }
1125
1126             if (!$inTables) {
1127                 $tables[] = array(TBL_NAME => $regs[1]);
1128             }
1129         }
1130
1131         /* Reset the array */
1132         $regs = array();
1133         $inTables = false;
1134     }
1135
1136     $params = array('db' => (string)$db_name);
1137     $db_url = 'db_structure.php' . PMA_generate_common_url($params);
1138     $db_ops_url = 'db_operations.php' . PMA_generate_common_url($params);
1139
1140     $message = '<br /><br />';
1141     $message .= '<strong>' . __('The following structures have either been created or altered. Here you can:') . '</strong><br />';
1142     $message .= '<ul><li>' . __('View a structure`s contents by clicking on its name') . '</li>';
1143     $message .= '<li>' . __('Change any of its settings by clicking the corresponding "Options" link') . '</li>';
1144     $message .= '<li>' . __('Edit its structure by following the "Structure" link') . '</li>';
1145     $message .= sprintf('<br /><li><a href="%s" title="%s">%s</a> (<a href="%s" title="%s">' . __('Options') . '</a>)</li>',
1146                         $db_url,
1147                         __('Go to database') . ': ' . PMA_backquote($db_name),
1148                         $db_name,
1149                         $db_ops_url,
1150                         __('Edit') . ' ' . PMA_backquote($db_name) . ' ' . __('settings'));
1151
1152     $message .= '<ul>';
1153
1154     unset($params);
1155
1156     $num_tables = count($tables);
1157     for ($i = 0; $i < $num_tables; ++$i)
1158     {
1159         $params = array('db' => (string)$db_name, 'table' => (string)$tables[$i][TBL_NAME]);
1160         $tbl_url = 'sql.php' . PMA_generate_common_url($params);
1161         $tbl_struct_url = 'tbl_structure.php' . PMA_generate_common_url($params);
1162         $tbl_ops_url = 'tbl_operations.php' . PMA_generate_common_url($params);
1163
1164         unset($params);
1165
1166         if (! PMA_isView($db_name, $tables[$i][TBL_NAME])) {
1167             $message .= sprintf('<li><a href="%s" title="%s">%s</a> (<a href="%s" title="%s">' . __('Structure') . '</a>) (<a href="%s" title="%s">' . __('Options') . '</a>)</li>',
1168                                 $tbl_url,
1169                                 __('Go to table') . ': ' . PMA_backquote($tables[$i][TBL_NAME]),
1170                                 $tables[$i][TBL_NAME],
1171                                 $tbl_struct_url,
1172                                 PMA_backquote($tables[$i][TBL_NAME]) . ' ' . __('structure'),
1173                                 $tbl_ops_url,
1174                                 __('Edit') . ' ' . PMA_backquote($tables[$i][TBL_NAME]) . ' ' . __('settings'));
1175         } else {
1176             $message .= sprintf('<li><a href="%s" title="%s">%s</a></li>',
1177                                 $tbl_url,
1178                                 __('Go to view') . ': ' . PMA_backquote($tables[$i][TBL_NAME]),
1179                                 $tables[$i][TBL_NAME]);
1180         }
1181     }
1182
1183     $message .= '</ul></ul>';
1184
1185     global $import_notice;
1186     $import_notice = $message;
1187
1188     unset($tables);
1189 }
1190
1191 ?>