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| 1 | <?php |
| 2 | // don't call the file directly |
| 3 | defined( 'ABSPATH' ) || die( 0 ); |
| 4 | |
| 5 | class VaultPress_Database { |
| 6 | |
| 7 | var $table = null; |
| 8 | var $pks = null; |
| 9 | |
| 10 | /** |
| 11 | * Table structure. |
| 12 | * |
| 13 | * @var ?object |
| 14 | */ |
| 15 | public $structure; |
| 16 | |
| 17 | function __construct() { |
| 18 | } |
| 19 | |
| 20 | function attach( $table, $parse_create_table = false ) { |
| 21 | $this->table=$table; |
| 22 | if ( $parse_create_table ) { |
| 23 | $this->structure = $this->parse_create_table( $this->show_create() ); |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | function get_tables( $filter=null ) { |
| 28 | global $wpdb; |
| 29 | $rval = $wpdb->get_col( 'SHOW TABLES' ); |
| 30 | if ( $filter ) |
| 31 | $rval = preg_grep( $filter, $rval ); |
| 32 | return $rval; |
| 33 | } |
| 34 | |
| 35 | function show_create() { |
| 36 | global $wpdb; |
| 37 | if ( !$this->table ) |
| 38 | return false; |
| 39 | $table = esc_sql( $this->table ); |
| 40 | $results = $wpdb->get_row( "SHOW CREATE TABLE `$table`" ); |
| 41 | $want = 'Create Table'; |
| 42 | if ( $results ) { |
| 43 | if ( isset( $results->$want ) ) { |
| 44 | $results = $results->$want; |
| 45 | } else { |
| 46 | $results = false; |
| 47 | } |
| 48 | } |
| 49 | return $results; |
| 50 | } |
| 51 | |
| 52 | function explain() { |
| 53 | global $wpdb; |
| 54 | if ( !$this->table ) |
| 55 | return false; |
| 56 | $table = esc_sql( $this->table ); |
| 57 | return $wpdb->get_results( "EXPLAIN `$table`" ); |
| 58 | } |
| 59 | |
| 60 | function diff( $signatures ) { |
| 61 | global $wpdb; |
| 62 | if ( !is_array( $signatures ) || !count( $signatures ) ) |
| 63 | return false; |
| 64 | if ( !$this->table ) |
| 65 | return false; |
| 66 | $table = esc_sql( $this->table ); |
| 67 | $diff = array(); |
| 68 | foreach ( $signatures as $where => $signature ) { |
| 69 | $pksig = md5( $where ); |
| 70 | unset( $wpdb->queries ); |
| 71 | $row = $wpdb->get_row( "SELECT * FROM `$table` WHERE $where" ); |
| 72 | if ( !$row ) { |
| 73 | $diff[$pksig] = array ( 'change' => 'deleted', 'where' => $where ); |
| 74 | continue; |
| 75 | } |
| 76 | $row = serialize( $row ); |
| 77 | $hash = md5( $row ); |
| 78 | if ( $hash != $signature ) |
| 79 | $diff[$pksig] = array( 'change' => 'modified', 'where' => $where, 'signature' => $hash, 'row' => $row ); |
| 80 | } |
| 81 | return $diff; |
| 82 | } |
| 83 | |
| 84 | function count( $columns ) { |
| 85 | global $wpdb; |
| 86 | if ( !is_array( $columns ) || !count( $columns ) ) |
| 87 | return false; |
| 88 | if ( !$this->table ) |
| 89 | return false; |
| 90 | $table = esc_sql( $this->table ); |
| 91 | $column = esc_sql( array_shift( $columns ) ); |
| 92 | return $wpdb->get_var( "SELECT COUNT( $column ) FROM `$table`" ); |
| 93 | } |
| 94 | |
| 95 | function wpdb( $query, $function='get_results' ) { |
| 96 | global $wpdb; |
| 97 | |
| 98 | if ( !is_callable( array( $wpdb, $function ) ) ) |
| 99 | return false; |
| 100 | |
| 101 | $res = $wpdb->$function( $query ); |
| 102 | if ( !$res ) |
| 103 | return $res; |
| 104 | switch ( $function ) { |
| 105 | case 'get_results': |
| 106 | foreach ( $res as $idx => $row ) { |
| 107 | if ( isset( $row->option_name ) && $row->option_name == 'cron' ) |
| 108 | $res[$idx]->option_value = serialize( array() ); |
| 109 | } |
| 110 | break; |
| 111 | case 'get_row': |
| 112 | if ( isset( $res->option_name ) && $res->option_name == 'cron' ) |
| 113 | $res->option_value = serialize( array() ); |
| 114 | break; |
| 115 | } |
| 116 | return $res; |
| 117 | } |
| 118 | |
| 119 | function get_cols( $columns, $limit=false, $offset=false, $where=false ) { |
| 120 | global $wpdb; |
| 121 | if ( !is_array( $columns ) || !count( $columns ) ) |
| 122 | return false; |
| 123 | if ( !$this->table ) |
| 124 | return false; |
| 125 | $table = esc_sql( $this->table ); |
| 126 | $limitsql = ''; |
| 127 | $offsetsql = ''; |
| 128 | $wheresql = ''; |
| 129 | if ( $limit ) |
| 130 | $limitsql = ' LIMIT ' . intval( $limit ); |
| 131 | if ( $offset ) |
| 132 | $offsetsql = ' OFFSET ' . intval( $offset ); |
| 133 | if ( $where ) |
| 134 | $wheresql = ' WHERE ' . base64_decode($where); |
| 135 | $rval = array(); |
| 136 | foreach ( $wpdb->get_results( "SELECT * FROM `$this->table` $wheresql $limitsql $offsetsql" ) as $row ) { |
| 137 | // We don't need to actually record a real cron option value, just an empty array |
| 138 | if ( isset( $row->option_name ) && $row->option_name == 'cron' ) |
| 139 | $row->option_value = serialize( array() ); |
| 140 | if ( !empty( $this->structure ) ) { |
| 141 | $hash = md5( $this->convert_to_sql_string( $row, $this->structure->columns ) ); |
| 142 | foreach ( get_object_vars( $row ) as $i => $v ) { |
| 143 | if ( !in_array( $i, $columns ) ) |
| 144 | unset( $row->$i ); |
| 145 | } |
| 146 | |
| 147 | $row->hash = $hash; |
| 148 | } else { |
| 149 | $keys = array(); |
| 150 | $vals = array(); |
| 151 | foreach ( get_object_vars( $row ) as $i => $v ) { |
| 152 | $keys[] = sprintf( "`%s`", esc_sql( $i ) ); |
| 153 | $vals[] = sprintf( "'%s'", esc_sql( $v ) ); |
| 154 | if ( !in_array( $i, $columns ) ) |
| 155 | unset( $row->$i ); |
| 156 | } |
| 157 | $row->hash = md5( sprintf( "(%s) VALUES(%s)", implode( ',',$keys ), implode( ',',$vals ) ) ); |
| 158 | } |
| 159 | $rval[]=$row; |
| 160 | } |
| 161 | return $rval; |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Convert a PHP object to a mysqldump compatible string, using the provided data type information. |
| 166 | **/ |
| 167 | function convert_to_sql_string( $data, $datatypes ) { |
| 168 | global $wpdb; |
| 169 | if ( !is_object( $data ) || !is_object( $datatypes ) ) |
| 170 | return false; |
| 171 | |
| 172 | $keys = array(); |
| 173 | $vals = array(); |
| 174 | |
| 175 | foreach ( array_keys( (array)$data ) as $key ) |
| 176 | $keys[] = sprintf( "`%s`", esc_sql( $key ) ); |
| 177 | foreach ( (array)$data as $key => $val ) { |
| 178 | if ( null === $val ) { |
| 179 | $vals[] = 'NULL'; |
| 180 | continue; |
| 181 | } |
| 182 | $type = 'text'; |
| 183 | if ( isset( $datatypes->$key->type ) ) |
| 184 | $type= strtolower( $datatypes->$key->type ); |
| 185 | if ( preg_match( '/int|double|float|decimal|bool/i', $type ) ) |
| 186 | $type = 'number'; |
| 187 | |
| 188 | if ( 'number' === $type ) { |
| 189 | // do not add quotes to numeric types. |
| 190 | $vals[] = $val; |
| 191 | } else { |
| 192 | $val = esc_sql( $val ); |
| 193 | // Escape characters that aren't escaped by esc_sql(): \n, \r, etc. |
| 194 | $val = str_replace( array( "\x0a", "\x0d", "\x1a" ), array( '\n', '\r', '\Z' ), $val ); |
| 195 | $vals[] = sprintf( "'%s'", $val ); |
| 196 | } |
| 197 | } |
| 198 | if ( !count($keys) ) |
| 199 | return false; |
| 200 | // format the row as a mysqldump line: (`column1`, `column2`) VALUES (numeric_value1,'text value 2') |
| 201 | return sprintf( "(%s) VALUES (%s)", implode( ', ',$keys ), implode( ',',$vals ) ); |
| 202 | } |
| 203 | |
| 204 | |
| 205 | |
| 206 | function parse_create_table( $sql ) { |
| 207 | $table = new stdClass(); |
| 208 | |
| 209 | $table->raw = $sql; |
| 210 | $table->columns = new stdClass(); |
| 211 | $table->primary = null; |
| 212 | $table->uniques = new stdClass(); |
| 213 | $table->keys = new stdClass(); |
| 214 | $sql = explode( "\n", trim( $sql ) ); |
| 215 | $table->engine = preg_replace( '/^.+ ENGINE=(\S+) .+$/i', "$1", $sql[(count($sql)-1)] ); |
| 216 | $table->charset = preg_replace( '/^.+ DEFAULT CHARSET=(\S+)( .+)?$/i', "$1", $sql[(count($sql)-1)] ); |
| 217 | $table->single_int_paging_column = null; |
| 218 | |
| 219 | foreach ( $sql as $idx => $val ) |
| 220 | $sql[$idx] = trim($val); |
| 221 | $columns = preg_grep( '/^\s*`[^`]+`\s*\S*/', $sql ); |
| 222 | if ( !$columns ) |
| 223 | return false; |
| 224 | |
| 225 | $table->name = preg_replace( '/(^[^`]+`|`[^`]+$)/', '', array_shift( preg_grep( '/^CREATE\s+TABLE\s+/', $sql ) ) ); |
| 226 | |
| 227 | foreach ( $columns as $line ) { |
| 228 | preg_match( '/^`([^`]+)`\s+([a-z]+)(\(\d+\))?\s*/', $line, $m ); |
| 229 | $name = $m[1]; |
| 230 | $table->columns->$name = new stdClass(); |
| 231 | $table->columns->$name->null = (bool)stripos( $line, ' NOT NULL ' ); |
| 232 | $table->columns->$name->type = $m[2]; |
| 233 | if ( isset($m[3]) ) { |
| 234 | if ( substr( $m[3], 0, 1 ) == '(' ) |
| 235 | $table->columns->$name->length = substr( $m[3], 1, -1 ); |
| 236 | else |
| 237 | $table->columns->$name->length = $m[3]; |
| 238 | } else { |
| 239 | $table->columns->$name->length = null; |
| 240 | } |
| 241 | if ( preg_match( '/ character set (\S+)/i', $line, $m ) ) { |
| 242 | $table->columns->$name->charset = $m[1]; |
| 243 | } else { |
| 244 | $table->columns->$name->charset = ''; |
| 245 | } |
| 246 | if ( preg_match( '/ collate (\S+)/i', $line, $m ) ) { |
| 247 | $table->columns->$name->collate = $m[1]; |
| 248 | } else { |
| 249 | $table->columns->$name->collate = ''; |
| 250 | } |
| 251 | if ( preg_match( '/ DEFAULT (.+),$/i', $line, $m ) ) { |
| 252 | if ( substr( $m[1], 0, 1 ) == "'" ) |
| 253 | $table->columns->$name->default = substr( $m[1], 1, -1 ); |
| 254 | else |
| 255 | $table->columns->$name->default = $m[1]; |
| 256 | } else { |
| 257 | $table->columns->$name->default = null; |
| 258 | } |
| 259 | $table->columns->$name->line = $line; |
| 260 | } |
| 261 | $pk = preg_grep( '/^PRIMARY\s+KEY\s+/i', $sql ); |
| 262 | if ( count( $pk ) ) { |
| 263 | $pk = array_pop( $pk ); |
| 264 | $pk = preg_replace( '/(^[^\(]+\(`|`\),?$)/', '', $pk ); |
| 265 | $pk = preg_replace( '/\([0-9]+\)/', '', $pk ); |
| 266 | $pk = explode( '`,`', $pk ); |
| 267 | $table->primary = $pk; |
| 268 | } |
| 269 | if ( is_array( $table->primary ) && count( $table->primary ) == 1 ) { |
| 270 | $pk_column_name = $table->primary[0]; |
| 271 | switch( strtolower( $table->columns->$pk_column_name->type ) ) { |
| 272 | // Integers, exact value |
| 273 | case 'tinyint': |
| 274 | case 'smallint': |
| 275 | case 'int': |
| 276 | case 'integer': |
| 277 | case 'bigint': |
| 278 | // Fixed point, exact value |
| 279 | case 'decimal': |
| 280 | case 'numeric': |
| 281 | // Floating point, approximate value |
| 282 | case 'float': |
| 283 | case 'double': |
| 284 | case 'real': |
| 285 | // Date and Time |
| 286 | case 'date': |
| 287 | case 'datetime': |
| 288 | case 'timestamp': |
| 289 | $table->single_int_paging_column = $pk_column_name; |
| 290 | break; |
| 291 | } |
| 292 | } |
| 293 | $keys = preg_grep( '/^((?:UNIQUE )?INDEX|(?:UNIQUE )?KEY)\s+/i', $sql ); |
| 294 | if ( !count( $keys ) ) |
| 295 | return $table; |
| 296 | foreach ( $keys as $idx => $key ) { |
| 297 | if ( 0 === strpos( $key, 'UNIQUE' ) ) |
| 298 | $is_unique = false; |
| 299 | else |
| 300 | $is_unique = true; |
| 301 | |
| 302 | // for KEY `refresh` (`ip`,`time_last`) USING BTREE, |
| 303 | $key = preg_replace( '/ USING \S+ ?(,?)$/', '$1', $key ); |
| 304 | |
| 305 | // for KEY `id` USING BTREE (`id`), |
| 306 | $key = preg_replace( '/` USING \S+ \(/i', '` (', $key ); |
| 307 | |
| 308 | $key = preg_replace( '/^((?:UNIQUE )?INDEX|(?:UNIQUE )?KEY)\s+/i', '', $key ); |
| 309 | $key = preg_replace( '/\([0-9]+\)/', '', $key ); |
| 310 | preg_match( '/^`([^`]+)`\s+\(`(.+)`\),?$/', $key, $m ); |
| 311 | $key = $m[1]; //preg_replace( '/\([^)]+\)/', '', $m[1]); |
| 312 | if ( !$key ) |
| 313 | continue; |
| 314 | if ( $is_unique ) |
| 315 | $table->keys->$key = explode( '`,`', $m[2] ); |
| 316 | else |
| 317 | $table->uniques->$key = explode( '`,`', $m[2] ); |
| 318 | } |
| 319 | |
| 320 | $uniques = get_object_vars( $table->uniques ); |
| 321 | foreach( $uniques as $idx => $val ) { |
| 322 | if ( is_array( $val ) && count( $val ) == 1 ) { |
| 323 | $pk_column_name = $val[0]; |
| 324 | switch( strtolower( $table->columns->$pk_column_name->type ) ) { |
| 325 | // Integers, exact value |
| 326 | case 'tinyint': |
| 327 | case 'smallint': |
| 328 | case 'int': |
| 329 | case 'integer': |
| 330 | case 'bigint': |
| 331 | // Fixed point, exact value |
| 332 | case 'decimal': |
| 333 | case 'numeric': |
| 334 | // Floating point, approximate value |
| 335 | case 'float': |
| 336 | case 'double': |
| 337 | case 'real': |
| 338 | // Date and Time |
| 339 | case 'date': |
| 340 | case 'datetime': |
| 341 | case 'timestamp': |
| 342 | $table->single_int_paging_column = $pk_column_name; |
| 343 | break; |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | if ( empty( $table->primary ) ) { |
| 349 | if ( !empty( $uniques ) ) |
| 350 | $table->primary = array_shift( $uniques ); |
| 351 | } |
| 352 | |
| 353 | return $table; |
| 354 | } |
| 355 | |
| 356 | function restore( $data_file, $md5_sum, $delete = true ) { |
| 357 | global $wpdb; |
| 358 | if ( !file_exists( $data_file ) || !is_readable( $data_file ) || !filesize( $data_file ) ) |
| 359 | return array( 'last_error' => 'File does not exist', 'data_file' => $data_file ); |
| 360 | if ( $md5_sum && md5_file( $data_file ) !== $md5_sum ) |
| 361 | return array( 'last_error' => 'Checksum mistmatch', 'data_file' => $data_file ); |
| 362 | if ( function_exists( 'exec' ) && ( $mysql = exec( 'which mysql' ) ) ) { |
| 363 | $details = explode( ':', DB_HOST, 2 ); |
| 364 | $params = array( defined( 'DB_CHARSET' ) && DB_CHARSET ? DB_CHARSET : 'utf8', DB_USER, DB_PASSWORD, $details[0], $details[1] ?? 3306, DB_NAME, $data_file ); |
| 365 | exec( sprintf( '%s %s', escapeshellcmd( $mysql ), vsprintf( '-A --default-character-set=%s -u%s -p%s -h%s -P%s %s < %s', array_map( 'escapeshellarg', $params ) ) ), $output, $r ); |
| 366 | if ( 0 === $r ) { |
| 367 | if ( $delete ) |
| 368 | @unlink( $data_file ); |
| 369 | return array( 'affected_rows' => 1, 'data_file' => $data_file, 'mysql_cli' => true ); |
| 370 | } |
| 371 | } |
| 372 | $size = filesize( $data_file ); |
| 373 | $fh = fopen( $data_file, 'r' ); |
| 374 | $last_error = false; |
| 375 | $affected_rows = 0; |
| 376 | if ( $size == 0 || !is_resource( $fh ) ) { |
| 377 | if ( $delete ) |
| 378 | @unlink( $data_file ); |
| 379 | return array( 'last_error' => 'Empty file or not readable', 'data_file' => $data_file ); |
| 380 | } else { |
| 381 | while( !feof( $fh ) ) { |
| 382 | $query = trim( stream_get_line( $fh, $size, ";\n" ) ); |
| 383 | if ( !empty( $query ) ) { |
| 384 | $affected_rows += $wpdb->query( $query ); |
| 385 | $last_error = $wpdb->last_error; |
| 386 | } |
| 387 | } |
| 388 | fclose( $fh ); |
| 389 | } |
| 390 | if ( $delete ) |
| 391 | @unlink( $data_file ); |
| 392 | return array( 'affected_rows' => $affected_rows, 'last_error' => $last_error, 'data_file' => $data_file ); |
| 393 | } |
| 394 | } |