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<?php |
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namespace Lagdo\DbAdmin\Db\Traits; |
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use Lagdo\DbAdmin\Driver\Entity\TableFieldEntity; |
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use function file_get_contents; |
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use function substr; |
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use function function_exists; |
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use function iconv; |
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use function json_decode; |
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use function is_array; |
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use function preg_match; |
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trait QueryInputTrait |
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{ |
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/** |
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* @param array $file |
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* @param string $key |
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* @param bool $decompress |
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* |
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* @return string |
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*/ |
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private function readFileContent(array $file, string $key, bool $decompress): string |
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{ |
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$name = $file['name'][$key]; |
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$tmpName = $file['tmp_name'][$key]; |
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$content = file_get_contents($decompress && preg_match('~\.gz$~', $name) ? |
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"compress.zlib://$tmpName" : $tmpName); //! may not be reachable because of open_basedir |
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if (!$decompress) { |
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return $content; |
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} |
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$start = substr($content, 0, 3); |
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if (function_exists('iconv') && preg_match("~^\xFE\xFF|^\xFF\xFE~", $start, $regs)) { |
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// not ternary operator to save memory |
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return iconv('utf-16', 'utf-8', $content) . "\n\n"; |
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} |
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if ($start == "\xEF\xBB\xBF") { // UTF-8 BOM |
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return substr($content, 3) . "\n\n"; |
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} |
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return $content; |
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} |
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/** |
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* Get file contents from $_FILES |
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* |
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* @param string $key |
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* @param bool $decompress |
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* |
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* @return string|null |
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*/ |
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private function getFileContents(string $key, bool $decompress = false) |
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{ |
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$file = $_FILES[$key]; |
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if (!$file) { |
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return null; |
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} |
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foreach ($file as $key => $val) { |
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$file[$key] = (array) $val; |
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} |
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$queries = ''; |
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foreach ($file['error'] as $key => $error) { |
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if (($error)) { |
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return $error; |
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} |
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$queries .= $this->readFileContent($file, $key, $decompress); |
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} |
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//! Support SQL files not ending with semicolon |
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return $queries; |
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} |
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/** |
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* @param TableFieldEntity $field |
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* @param string $value |
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* @param string $function |
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* |
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* @return string |
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*/ |
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private function getInputFieldExpression(TableFieldEntity $field, string $value, string $function): string |
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{ |
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$expression = $this->driver->quote($value); |
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if (preg_match('~^(now|getdate|uuid)$~', $function)) { |
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return "$function()"; |
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} |
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if (preg_match('~^current_(date|timestamp)$~', $function)) { |
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return $function; |
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} |
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if (preg_match('~^([+-]|\|\|)$~', $function)) { |
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return $this->driver->escapeId($field->name) . " $function $expression"; |
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} |
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if (preg_match('~^[+-] interval$~', $function)) { |
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return $this->driver->escapeId($field->name) . " $function " . |
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(preg_match("~^(\\d+|'[0-9.: -]') [A-Z_]+\$~i", $value) ? $value : $expression); |
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} |
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if (preg_match('~^(addtime|subtime|concat)$~', $function)) { |
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return "$function(" . $this->driver->escapeId($field->name) . ", $expression)"; |
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} |
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if (preg_match('~^(md5|sha1|password|encrypt)$~', $function)) { |
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return "$function($expression)"; |
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} |
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return $expression; |
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} |
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/** |
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* @param TableFieldEntity $field Single field from fields() |
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* @param string $value |
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* @param string $function |
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* |
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* @return string |
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*/ |
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protected function getUnconvertedFieldValue(TableFieldEntity $field, string $value, string $function = ''): string |
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{ |
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if ($function === 'SQL') { |
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return $value; // SQL injection |
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} |
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$expression = $this->getInputFieldExpression($field, $value, $function); |
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return $this->driver->unconvertField($field, $expression); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return false|int|string |
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*/ |
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private function getEnumFieldValue($value) |
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{ |
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if ($value === -1) { |
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return false; |
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} |
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if ($value === '') { |
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return 'NULL'; |
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} |
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return +$value; |
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} |
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/** |
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* @param TableFieldEntity $field |
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* |
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* @return string|false |
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*/ |
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private function getOrigFieldValue(TableFieldEntity $field) |
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{ |
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if (preg_match('~^CURRENT_TIMESTAMP~i', $field->onUpdate) === false) { |
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return false; |
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} |
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return $this->driver->escapeId($field->name); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return array|false |
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*/ |
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private function getJsonFieldValue($value) |
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{ |
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if (!is_array($value = json_decode($value, true))) { |
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return false; //! Report errors |
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} |
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return $value; |
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} |
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} |
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lagdo /
jaxon-dbadmin
