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Fix regression verifCond

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This commit is contained in:
Laurent Destailleur 2022-03-01 18:14:24 +01:00
parent b79ad197ec
commit 883f13b388
2 changed files with 28 additions and 7 deletions
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27
htdocs/core/lib/functions.lib.php
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@ -8167,7 +8167,7 @@ function dol_getIdFromCode($db, $key, $tablename, $fieldkey = 'code', $fieldid =
* Verify if condition in string is ok or not
*
* @param string $strToEvaluate String with condition to check
* @return boolean True or False. Note: It returns True if $strToEvaluate is ''
* @return boolean True or False. Note: It returns also True if $strToEvaluate is ''
*/
function verifCond($strToEvaluate)
{
@ -8178,8 +8178,10 @@ function verifCond($strToEvaluate)
//print $strToEvaluate."<br>\n";
$rights = true;
if (isset($strToEvaluate) && $strToEvaluate !== '') {
$str = 'if(!('.$strToEvaluate.')) { $rights = false; }';
dol_eval($str); // The dol_eval must contains all the global $xxx used into a condition
$str = 'if(!('.$strToEvaluate.')) $rights = false;';
dol_eval($str, 0, 1, '2'); // The dol_eval must contains all the global $xxx used into a condition
//$rep = dol_eval($strToEvaluate, 1, 1 , '1'); // The dol_eval must contains all the global $xxx used into a condition
//$rights = ($rep ? true : false);
}
return $rights;
}
@ -8191,7 +8193,7 @@ function verifCond($strToEvaluate)
* @param string $s String to evaluate
* @param int $returnvalue 0=No return (used to execute eval($a=something)). 1=Value of eval is returned (used to eval($something)).
* @param int $hideerrors 1=Hide errors
* @param string $onlysimplestring Accept only simple string with char 'a-z0-9\s$_->&|=';
* @param string $onlysimplestring 0=Accept all chars, 1=Accept only simple string with char 'a-z0-9\s$_->&|=';, 2=Accept also '!?():";'
* @return mixed Nothing or return result of eval
*/
function dol_eval($s, $returnvalue = 0, $hideerrors = 1, $onlysimplestring = '1')
@ -8210,7 +8212,22 @@ function dol_eval($s, $returnvalue = 0, $hideerrors = 1, $onlysimplestring = '1'
if ($onlysimplestring == '1') {
//print preg_quote('$_->&|', '/');
if (preg_match('/[^a-z0-9\s'.preg_quote('$_->&|=', '/').']/i', $s)) {
return 'Bad string syntax to evaluate (found chars that are not chars for simplestring): '.$s;
if ($returnvalue) {
return 'Bad string syntax to evaluate (found chars that are not chars for simplestring): '.$s;
} else {
dol_syslog('Bad string syntax to evaluate (found chars that are not chars for simplestring): '.$s);
return '';
}
}
} elseif ($onlysimplestring == '2') {
//print preg_quote('$_->&|', '/');
if (preg_match('/[^a-z0-9\s'.preg_quote('$_->&|=!?():";', '/').']/i', $s)) {
if ($returnvalue) {
return 'Bad string syntax to evaluate (found chars that are not chars for simplestring): '.$s;
} else {
dol_syslog('Bad string syntax to evaluate (found chars that are not chars for simplestring): '.$s);
return '';
}
}
}
if (strpos($s, '`') !== false) {

8
test/phpunit/SecurityTest.php
View File

@ -876,12 +876,12 @@ class SecurityTest extends PHPUnit\Framework\TestCase
include_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
include_once DOL_DOCUMENT_ROOT.'/projet/class/task.class.php';
$s = '(($reloadedobj = new Task($db)) && ($reloadedobj->fetchNoCompute($object->id) > 0) && ($secondloadedobj = new Project($db)) && ($secondloadedobj->fetchNoCompute($reloadedobj->fk_project) > 0)) ? $secondloadedobj->ref: "Parent project not found"';
$s = '(($reloadedobj = new Task($db)) && ($reloadedobj->fetchNoCompute($object->id) > 0) && ($secondloadedobj = new Project($db)) && ($secondloadedobj->fetchNoCompute($reloadedobj->fk_project) > 0)) ? $secondloadedobj->ref : "Parent project not found"';
$result=dol_eval($s, 1, 1, '');
print "result = ".$result."\n";
$this->assertEquals('Parent project not found', $result);
$s = '(($reloadedobj = new Task($db)) && ($reloadedobj->fetchNoCompute($object->id) > 0) && ($secondloadedobj = new Project($db)) && ($secondloadedobj->fetchNoCompute($reloadedobj->fk_project) > 0)) ? $secondloadedobj->ref: \'Parent project not found\'';
$s = '(($reloadedobj = new Task($db)) && ($reloadedobj->fetchNoCompute($object->id) > 0) && ($secondloadedobj = new Project($db)) && ($secondloadedobj->fetchNoCompute($reloadedobj->fk_project) > 0)) ? $secondloadedobj->ref : \'Parent project not found\'';
$result=dol_eval($s, 1, 1, '');
print "result = ".$result."\n";
$this->assertEquals('Parent project not found', $result);
@ -910,6 +910,10 @@ class SecurityTest extends PHPUnit\Framework\TestCase
print "result = ".$result."\n";
$this->assertContains('Bad string syntax to evaluate', $result);
$result=dol_eval("sprintf(\"%s%s\", \"ex\", \"ec\")('echo abc')", 1, 0, '');
print "result = ".$result."\n";
$this->assertContains('Bad string syntax to evaluate', $result);
// Case with param onlysimplestring = 1
$result=dol_eval('1 && $conf->abc->doesnotexist1 && $conf->def->doesnotexist1', 1, 0); // Should return false and not a 'Bad string syntax to evaluate ...'
print "result = ".$result."\n";