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