402 lines
14 KiB
PHP
402 lines
14 KiB
PHP
<?php
|
|
/* vim: set expandtab sw=4 ts=4 sts=4: */
|
|
/**
|
|
* Get user's global privileges and some db-specific privileges
|
|
*
|
|
* @package PhpMyAdmin
|
|
*/
|
|
if (! defined('PHPMYADMIN')) {
|
|
exit;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
$GLOBALS['is_superuser'] = $GLOBALS['dbi']->isSuperuser();
|
|
|
|
/**
|
|
* Check if user has required privileges for
|
|
* performing 'FLUSH PRIVILEGES' operation
|
|
*
|
|
* @return void
|
|
*/
|
|
function PMA_checkRequiredPrivilegesForFlushing()
|
|
{
|
|
if (PMA\libraries\Util::cacheExists('flush_priv')) {
|
|
$GLOBALS['flush_priv'] = PMA\libraries\Util::cacheGet(
|
|
'flush_priv'
|
|
);
|
|
return;
|
|
}
|
|
|
|
$GLOBALS['flush_priv'] = $GLOBALS['dbi']->tryQuery(
|
|
'FLUSH PRIVILEGES'
|
|
);
|
|
|
|
// must also cacheUnset() them in
|
|
// libraries/plugins/auth/AuthenticationCookie.class.php
|
|
PMA\libraries\Util::cacheSet('flush_priv', $GLOBALS['flush_priv']);
|
|
}
|
|
|
|
/**
|
|
* Check if user has the required privileges according to some
|
|
* verification queries
|
|
*
|
|
* @param array $queries the SQL queries for verifications
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function PMA_hasRequiredPrivileges($queries)
|
|
{
|
|
$privs_available = true;
|
|
// FOR DB PRIVS
|
|
$select_privs_available = $GLOBALS['dbi']->tryQuery(
|
|
$queries['0select']
|
|
);
|
|
|
|
$privs_available = $select_privs_available && $privs_available;
|
|
|
|
if ($privs_available) {
|
|
$delete_privs_available = $GLOBALS['dbi']->tryQuery(
|
|
$queries['1delete']
|
|
);
|
|
$privs_available = $delete_privs_available && $privs_available;
|
|
}
|
|
|
|
if ($privs_available) {
|
|
$insert_privs_available = $GLOBALS['dbi']->tryQuery(
|
|
$queries['2insert']
|
|
);
|
|
// If successful test insert, delete the test row
|
|
if ($insert_privs_available) {
|
|
$GLOBALS['dbi']->tryQuery(
|
|
$queries['3delete']
|
|
);
|
|
}
|
|
$privs_available = $insert_privs_available && $privs_available;
|
|
}
|
|
|
|
if ($privs_available) {
|
|
$update_privs_available = $GLOBALS['dbi']->tryQuery(
|
|
$queries['4update']
|
|
);
|
|
$privs_available = $update_privs_available && $privs_available;
|
|
}
|
|
|
|
return $privs_available;
|
|
}
|
|
|
|
/**
|
|
* Check if user has privileges on mysql.db
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function PMA_hasMysqlDbPrivileges()
|
|
{
|
|
return PMA_hasRequiredPrivileges(
|
|
array(
|
|
'0select' => 'SELECT * FROM `mysql`.`db` LIMIT 1',
|
|
'1delete' => 'DELETE FROM `mysql`.`db` WHERE `host` = "" AND '
|
|
. '`Db` = "" AND `User` = "" LIMIT 1',
|
|
'2insert' => 'INSERT INTO `mysql`.`db`(`host`, `Db`, `User`) '
|
|
. 'VALUES("pma_test_host", "mysql", "pma_test_user")',
|
|
'3delete' => 'DELETE FROM `mysql`.`db` WHERE host = '
|
|
. '"pma_test_host" AND Db = "mysql" AND User = '
|
|
. '"pma_test_user" LIMIT 1',
|
|
'4update' => 'UPDATE `mysql`.`db` SET `host` = "" WHERE '
|
|
. '`host` = "" AND `Db` = "" AND `User` = "" LIMIT 1'
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Check if user has privileges on mysql.columns_priv
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function PMA_hasMysqlColumnsPrivileges()
|
|
{
|
|
return PMA_hasRequiredPrivileges(
|
|
array(
|
|
'0select' => 'SELECT * FROM `mysql`.`columns_priv` LIMIT 1',
|
|
'1delete' => 'DELETE FROM `mysql`.`columns_priv` '
|
|
. 'WHERE `host` = "" AND `Db` = "" AND `User` = "" LIMIT 1',
|
|
'2insert' => 'INSERT INTO `mysql`.`columns_priv`(`host`, `Db`, '
|
|
. '`User`, `Table_name`, `Column_name`) '
|
|
. 'VALUES("pma_test_host", "mysql", "pma_test_user", "", "")',
|
|
'3delete' => 'DELETE FROM `mysql`.`columns_priv` WHERE host = '
|
|
. '"pma_test_host" AND Db = "mysql" AND User = '
|
|
. '"pma_test_user" AND Table_name = "" AND Column_name = "" LIMIT 1',
|
|
'4update' => 'UPDATE `mysql`.`columns_priv` SET `host` = "" '
|
|
. 'WHERE `host` = "" AND `Db` = "" AND `User` = "" '
|
|
. 'AND Column_name = "" AND Table_name = "" LIMIT 1'
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Check if user has privileges on mysql.tables_priv
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function PMA_hasMysqlTablesPrivileges()
|
|
{
|
|
return PMA_hasRequiredPrivileges(
|
|
array(
|
|
'0select' => 'SELECT * FROM `mysql`.`tables_priv` LIMIT 1',
|
|
'1delete' => 'DELETE FROM `mysql`.`tables_priv` WHERE `host` '
|
|
. '= "" AND `Db` = "" AND `User` = "" AND Table_name = "" LIMIT 1',
|
|
'2insert' => 'INSERT INTO `mysql`.`tables_priv`(`host`, `Db`, '
|
|
. '`User`, `Table_name`) VALUES("pma_test_host", "mysql", '
|
|
. '"pma_test_user", "")',
|
|
'3delete' => 'DELETE FROM `mysql`.`tables_priv` WHERE host = '
|
|
. '"pma_test_host" AND Db = "mysql" AND User = '
|
|
. '"pma_test_user" AND Table_name = "" LIMIT 1',
|
|
'4update' => 'UPDATE `mysql`.`tables_priv` SET `host` = "" '
|
|
. 'WHERE `host` = "" AND `Db` = "" AND `User` = "" '
|
|
. 'AND Table_name = "" LIMIT 1'
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Check if user has privileges on mysql.procs_priv
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function PMA_hasMysqlProcsPrivileges()
|
|
{
|
|
return PMA_hasRequiredPrivileges(
|
|
array(
|
|
'0select' => 'SELECT * FROM `mysql`.`procs_priv` LIMIT 1',
|
|
'1delete' => 'DELETE FROM `mysql`.`procs_priv` WHERE `host` '
|
|
. '= "" AND `Db` = "" AND `User` = "" AND `Routine_name` = '
|
|
. '"" AND `Routine_type` = "" LIMIT 1',
|
|
'2insert' => 'INSERT INTO `mysql`.`procs_priv`(`host`, `Db`, '
|
|
. '`User`, `Routine_name`, `Routine_type`) '
|
|
. 'VALUES("pma_test_host", "mysql", "pma_test_user", "", "PROCEDURE")',
|
|
'3delete' => 'DELETE FROM `mysql`.`procs_priv` WHERE `host` = '
|
|
. '"pma_test_host" AND `Db` = "mysql" AND `User` = '
|
|
. '"pma_test_user" AND `Routine_name` = "" '
|
|
. 'AND `Routine_type` = "PROCEDURE" LIMIT 1',
|
|
'4update' => 'UPDATE `mysql`.`procs_priv` SET `host` = "" '
|
|
. 'WHERE `host` = "" AND `Db` = "" AND `User` = "" '
|
|
. 'AND `Routine_name` = "" LIMIT 1'
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Check if user has required privileges for
|
|
* performing 'Adjust privileges' operations
|
|
*
|
|
* @return void
|
|
*/
|
|
function PMA_checkRequiredPrivilegesForAdjust()
|
|
{
|
|
if (PMA\libraries\Util::cacheExists('db_priv')) {
|
|
$GLOBALS['db_priv'] = PMA\libraries\Util::cacheGet(
|
|
'db_priv'
|
|
);
|
|
$GLOBALS['col_priv'] = PMA\libraries\Util::cacheGet(
|
|
'col_priv'
|
|
);
|
|
$GLOBALS['table_priv'] = PMA\libraries\Util::cacheGet(
|
|
'table_priv'
|
|
);
|
|
$GLOBALS['proc_priv'] = PMA\libraries\Util::cacheGet(
|
|
'proc_priv'
|
|
);
|
|
return;
|
|
}
|
|
|
|
$GLOBALS['db_priv'] = PMA_hasMysqlDbPrivileges();
|
|
$GLOBALS['col_priv'] = PMA_hasMysqlColumnsPrivileges();
|
|
$GLOBALS['table_priv'] = PMA_hasMysqlTablesPrivileges();
|
|
$GLOBALS['proc_priv'] = PMA_hasMysqlProcsPrivileges();
|
|
|
|
// must also cacheUnset() them in
|
|
// libraries/plugins/auth/AuthenticationCookie.class.php
|
|
PMA\libraries\Util::cacheSet('proc_priv', $GLOBALS['proc_priv']);
|
|
PMA\libraries\Util::cacheSet('table_priv', $GLOBALS['table_priv']);
|
|
PMA\libraries\Util::cacheSet('col_priv', $GLOBALS['col_priv']);
|
|
PMA\libraries\Util::cacheSet('db_priv', $GLOBALS['db_priv']);
|
|
}
|
|
|
|
/**
|
|
* sets privilege information extracted from SHOW GRANTS result
|
|
*
|
|
* Detection for some CREATE privilege.
|
|
*
|
|
* Since MySQL 4.1.2, we can easily detect current user's grants using $userlink
|
|
* (no control user needed) and we don't have to try any other method for
|
|
* detection
|
|
*
|
|
* @todo fix to get really all privileges, not only explicitly defined for this user
|
|
* from MySQL manual: (http://dev.mysql.com/doc/refman/5.0/en/show-grants.html)
|
|
* SHOW GRANTS displays only the privileges granted explicitly to the named
|
|
* account. Other privileges might be available to the account, but they are not
|
|
* displayed. For example, if an anonymous account exists, the named account
|
|
* might be able to use its privileges, but SHOW GRANTS will not display them.
|
|
*
|
|
* @return void
|
|
*/
|
|
function PMA_analyseShowGrant()
|
|
{
|
|
if (PMA\libraries\Util::cacheExists('is_create_db_priv')) {
|
|
$GLOBALS['is_create_db_priv'] = PMA\libraries\Util::cacheGet(
|
|
'is_create_db_priv'
|
|
);
|
|
$GLOBALS['is_reload_priv'] = PMA\libraries\Util::cacheGet(
|
|
'is_reload_priv'
|
|
);
|
|
$GLOBALS['db_to_create'] = PMA\libraries\Util::cacheGet(
|
|
'db_to_create'
|
|
);
|
|
$GLOBALS['dbs_where_create_table_allowed'] = PMA\libraries\Util::cacheGet(
|
|
'dbs_where_create_table_allowed'
|
|
);
|
|
$GLOBALS['dbs_to_test'] = PMA\libraries\Util::cacheGet(
|
|
'dbs_to_test'
|
|
);
|
|
return;
|
|
}
|
|
|
|
// defaults
|
|
$GLOBALS['is_create_db_priv'] = false;
|
|
$GLOBALS['is_reload_priv'] = false;
|
|
$GLOBALS['db_to_create'] = '';
|
|
$GLOBALS['dbs_where_create_table_allowed'] = array();
|
|
$GLOBALS['dbs_to_test'] = $GLOBALS['dbi']->getSystemSchemas();
|
|
|
|
$rs_usr = $GLOBALS['dbi']->tryQuery('SHOW GRANTS');
|
|
|
|
if (! $rs_usr) {
|
|
return;
|
|
}
|
|
|
|
$re0 = '(^|(\\\\\\\\)+|[^\\\\])'; // non-escaped wildcards
|
|
$re1 = '(^|[^\\\\])(\\\)+'; // escaped wildcards
|
|
|
|
while ($row = $GLOBALS['dbi']->fetchRow($rs_usr)) {
|
|
// extract db from GRANT ... ON *.* or GRANT ... ON db.*
|
|
$db_name_offset = /*overload*/mb_strpos($row[0], ' ON ') + 4;
|
|
$show_grants_dbname = /*overload*/mb_substr(
|
|
$row[0], $db_name_offset,
|
|
/*overload*/mb_strpos($row[0], '.', $db_name_offset) - $db_name_offset
|
|
);
|
|
$show_grants_dbname = PMA\libraries\Util::unQuote($show_grants_dbname, '`');
|
|
|
|
$show_grants_str = /*overload*/mb_substr(
|
|
$row[0],
|
|
6,
|
|
(/*overload*/mb_strpos($row[0], ' ON ') - 6)
|
|
);
|
|
|
|
if ($show_grants_dbname == '*') {
|
|
if ($show_grants_str != 'USAGE') {
|
|
$GLOBALS['dbs_to_test'] = false;
|
|
}
|
|
} elseif ($GLOBALS['dbs_to_test'] !== false) {
|
|
$GLOBALS['dbs_to_test'][] = $show_grants_dbname;
|
|
}
|
|
|
|
if ($show_grants_str == 'RELOAD') {
|
|
$GLOBALS['is_reload_priv'] = true;
|
|
}
|
|
|
|
/**
|
|
* @todo if we find CREATE VIEW but not CREATE, do not offer
|
|
* the create database dialog box
|
|
*/
|
|
if ($show_grants_str == 'ALL'
|
|
|| $show_grants_str == 'ALL PRIVILEGES'
|
|
|| $show_grants_str == 'CREATE'
|
|
|| strpos($show_grants_str, 'CREATE,') !== false
|
|
) {
|
|
if ($show_grants_dbname == '*') {
|
|
// a global CREATE privilege
|
|
$GLOBALS['is_create_db_priv'] = true;
|
|
$GLOBALS['is_reload_priv'] = true;
|
|
$GLOBALS['db_to_create'] = '';
|
|
$GLOBALS['dbs_where_create_table_allowed'][] = '*';
|
|
// @todo we should not break here, cause GRANT ALL *.*
|
|
// could be revoked by a later rule like GRANT SELECT ON db.*
|
|
break;
|
|
} else {
|
|
// this array may contain wildcards
|
|
$GLOBALS['dbs_where_create_table_allowed'][] = $show_grants_dbname;
|
|
|
|
$dbname_to_test = PMA\libraries\Util::backquote($show_grants_dbname);
|
|
|
|
if ($GLOBALS['is_create_db_priv']) {
|
|
// no need for any more tests if we already know this
|
|
continue;
|
|
}
|
|
|
|
// does this db exist?
|
|
if ((preg_match('/' . $re0 . '%|_/', $show_grants_dbname)
|
|
&& ! preg_match('/\\\\%|\\\\_/', $show_grants_dbname))
|
|
|| (! $GLOBALS['dbi']->tryQuery(
|
|
'USE ' . preg_replace(
|
|
'/' . $re1 . '(%|_)/', '\\1\\3', $dbname_to_test
|
|
)
|
|
)
|
|
&& /*overload*/mb_substr($GLOBALS['dbi']->getError(), 1, 4) != 1044)
|
|
) {
|
|
/**
|
|
* Do not handle the underscore wildcard
|
|
* (this case must be rare anyway)
|
|
*/
|
|
$GLOBALS['db_to_create'] = preg_replace(
|
|
'/' . $re0 . '%/', '\\1',
|
|
$show_grants_dbname
|
|
);
|
|
$GLOBALS['db_to_create'] = preg_replace(
|
|
'/' . $re1 . '(%|_)/', '\\1\\3',
|
|
$GLOBALS['db_to_create']
|
|
);
|
|
$GLOBALS['is_create_db_priv'] = true;
|
|
|
|
/**
|
|
* @todo collect $GLOBALS['db_to_create'] into an array,
|
|
* to display a drop-down in the "Create database" dialog
|
|
*/
|
|
// we don't break, we want all possible databases
|
|
//break;
|
|
} // end if
|
|
} // end elseif
|
|
} // end if
|
|
} // end while
|
|
|
|
$GLOBALS['dbi']->freeResult($rs_usr);
|
|
|
|
// must also cacheUnset() them in
|
|
// libraries/plugins/auth/AuthenticationCookie.php
|
|
PMA\libraries\Util::cacheSet('is_create_db_priv', $GLOBALS['is_create_db_priv']);
|
|
PMA\libraries\Util::cacheSet('is_reload_priv', $GLOBALS['is_reload_priv']);
|
|
PMA\libraries\Util::cacheSet('db_to_create', $GLOBALS['db_to_create']);
|
|
PMA\libraries\Util::cacheSet(
|
|
'dbs_where_create_table_allowed',
|
|
$GLOBALS['dbs_where_create_table_allowed']
|
|
);
|
|
PMA\libraries\Util::cacheSet('dbs_to_test', $GLOBALS['dbs_to_test']);
|
|
} // end function
|
|
|
|
$user = $GLOBALS['dbi']->fetchValue("SELECT CURRENT_USER();");
|
|
if ($user == '@') { // MySQL is started with --skip-grant-tables
|
|
$GLOBALS['is_create_db_priv'] = true;
|
|
$GLOBALS['is_reload_priv'] = true;
|
|
$GLOBALS['db_to_create'] = '';
|
|
$GLOBALS['dbs_where_create_table_allowed'] = array('*');
|
|
$GLOBALS['dbs_to_test'] = false;
|
|
} else {
|
|
PMA_analyseShowGrant();
|
|
}
|
|
|
|
// Check if privileges to 'mysql'.col_privs, 'mysql'.db,
|
|
// 'mysql'.table_privs, 'mysql'.proc_privs and privileges for
|
|
// flushing the privileges are available
|
|
PMA_checkRequiredPrivilegesForFlushing();
|
|
PMA_checkRequiredPrivilegesForAdjust();
|
