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<?php |
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namespace Lagdo\DbAdmin\Db\Traits; |
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use function explode; |
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use function in_array; |
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use function array_keys; |
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use function strtoupper; |
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use function preg_match; |
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use function preg_match_all; |
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trait UserAdminTrait |
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{ |
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/** |
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* Get the users and hosts |
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* |
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* @param string $database The database name |
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* |
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* @return array |
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*/ |
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public function getUsers(string $database): array |
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{ |
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// From privileges.inc.php |
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$clause = ($database == '' ? 'user' : 'db WHERE ' . $this->driver->quote($database) . ' LIKE Db'); |
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$query = "SELECT User, Host FROM mysql.$clause ORDER BY Host, User"; |
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$statement = $this->driver->query($query); |
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// $grant = $statement; |
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if (!$statement) { |
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// list logged user, information_schema.USER_PRIVILEGES lists just the current user too |
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$statement = $this->driver->query("SELECT SUBSTRING_INDEX(CURRENT_USER, '@', 1) " . |
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"AS User, SUBSTRING_INDEX(CURRENT_USER, '@', -1) AS Host"); |
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} |
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$users = []; |
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while ($row = $statement->fetchAssoc()) { |
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$users[] = $row; |
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} |
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return $users; |
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} |
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/** |
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* @param array $grants |
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* @param array $row |
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* @param string $password |
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* |
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* @return void |
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*/ |
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private function setUserGrant(array &$grants, array $row, string &$password) |
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{ |
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if (preg_match('~GRANT (.*) ON (.*) TO ~', $row[0], $match) && |
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preg_match_all('~ *([^(,]*[^ ,(])( *\([^)]+\))?~', $match[1], $matches, PREG_SET_ORDER)) { //! escape the part between ON and TO |
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foreach ($matches as $val) { |
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$match2 = $match[2] ?? ''; |
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$val2 = $val[2] ?? ''; |
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if ($val[1] != 'USAGE') { |
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$grants["$match2$val2"][$val[1]] = true; |
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} |
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if (preg_match('~ WITH GRANT OPTION~', $row[0])) { //! don't check inside strings and identifiers |
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$grants["$match2$val2"]['GRANT OPTION'] = true; |
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} |
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} |
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} |
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if (preg_match("~ IDENTIFIED BY PASSWORD '([^']+)~", $row[0], $match)) { |
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$password = $match[1]; |
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} |
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} |
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/** |
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* Get the grants of a user on a given host |
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* |
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* @param string $user The username |
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* @param string $host The host name |
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* @param string $password The user password |
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* |
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* @return array |
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*/ |
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public function getUserGrants(string $user, string $host, string &$password): array |
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{ |
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// From user.inc.php |
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$grants = []; |
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//! use information_schema for MySQL 5 - column names in column privileges are not escaped |
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$query = 'SHOW GRANTS FOR ' . $this->driver->quote($user) . '@' . $this->driver->quote($host); |
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if (($statement = $this->driver->query($query))) { |
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while ($row = $statement->fetchRow()) { |
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$this->setUserGrant($grants, $row, $password); |
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} |
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} |
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return $grants; |
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} |
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/** |
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* @param array $features |
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* @param array $row |
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* |
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* @return void |
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*/ |
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private function makeFeatures(array &$features, array $row) |
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{ |
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$contexts = explode(',', $row['Context']); |
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foreach ($contexts as $context) { |
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// Don't take 'Grant option' privileges. |
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if ($row['Privilege'] === 'Grant option') { |
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continue; |
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} |
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// Privileges of 'Server Admin' and 'File access on server' are merged |
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if ($context === 'File access on server') { |
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$context = 'Server Admin'; |
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} |
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$privilege = $row['Privilege']; |
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// Comment for this is 'No privileges - allow connect only' |
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if ($context === 'Server Admin' && $privilege === 'Usage') { |
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continue; |
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} |
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// MySQL bug #30305 |
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if ($context === 'Procedures' && $privilege === 'Create routine') { |
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$context = 'Databases'; |
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} |
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if (!isset($features[$context])) { |
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$features[$context] = []; |
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} |
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$features[$context][$privilege] = $row['Comment']; |
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if ($context === 'Tables' && |
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in_array($privilege, ['Select', 'Insert', 'Update', 'References'])) { |
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$features['Columns'][$privilege] = $row['Comment']; |
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} |
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} |
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} |
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/** |
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* @param string $privilege |
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* @param string $desc |
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* @param string $context |
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* @param array $grants |
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* |
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* @return array |
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*/ |
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private function getUserPrivilegeDetail(string $privilege, string $desc, string $context, array $grants): array |
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{ |
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$detail = [$desc, $this->util->html($privilege)]; |
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// echo '<tr><td' . ($desc ? ">$desc<td" : " colspan='2'") . |
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// ' lang="en" title="' . $this->util->html($comment) . '">' . $this->util->html($privilege); |
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$i = 0; |
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foreach ($grants as $object => $grant) { |
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$name = "'grants[$i][" . $this->util->html(strtoupper($privilege)) . "]'"; |
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$value = $grant[strtoupper($privilege)] ?? false; |
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if ($context == 'Server Admin' && $object != (isset($grants['*.*']) ? '*.*' : '.*')) { |
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$detail[] = ''; |
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} |
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// elseif(isset($values['grant'])) |
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// { |
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// $detail[] = "<select name=$name><option><option value='1'" . |
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// ($value ? ' selected' : '') . '>' . $this->trans->lang('Grant') . |
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// "<option value='0'" . ($value == '0' ? ' selected' : '') . '>' . |
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// $this->trans->lang('Revoke') . '</select>'; |
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// } |
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else { |
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$detail[] = "<input type='checkbox' name=$name" . ($value ? ' checked />' : ' />'); |
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} |
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$i++; |
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} |
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return $detail; |
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} |
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/** |
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* Get the user privileges |
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* |
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* @param array $grants The user grants |
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* |
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* @return array |
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*/ |
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public function getUserPrivileges(array $grants): array |
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{ |
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// From user.inc.php |
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$features = [ |
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'' => [ |
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'All privileges' => '', |
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], |
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'Columns' => [], |
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]; |
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$rows = $this->driver->rows('SHOW PRIVILEGES'); |
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foreach ($rows as $row) { |
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$this->makeFeatures($features, $row); |
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} |
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foreach (array_keys($features['Tables']) as $privilege) { |
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unset($features['Databases'][$privilege]); |
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} |
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$privileges = []; |
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$contexts = [ |
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'' => '', |
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'Server Admin' => $this->trans->lang('Server'), |
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'Databases' => $this->trans->lang('Database'), |
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'Tables' => $this->trans->lang('Table'), |
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'Columns' => $this->trans->lang('Column'), |
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'Procedures' => $this->trans->lang('Routine'), |
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]; |
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foreach ($contexts as $context => $desc) { |
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foreach ($features[$context] as $privilege => $comment) { |
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$privileges[] = $this->getUserPrivilegeDetail($privilege, $desc, $context, $grants); |
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} |
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} |
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return $privileges; |
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} |
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} |
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