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std/dba: validate file permission argument in dba_open() #22228

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std/dba: validate file permission argument in dba_open() #22228

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std/dba: validate file permission argument in dba_open()
arshidkv12 Jun 4, 2026
0831a46
std/dba: validate file permission argument in dba_open()
arshidkv12 Jun 4, 2026
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5 changes: 4 additions & 1 deletion ext/dba/dba.c
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Original file line number Diff line number Diff line change
Expand Up @@ -563,7 +563,10 @@ static void php_dba_open(INTERNAL_FUNCTION_PARAMETERS, bool persistent)
zend_argument_must_not_be_empty_error(3);
RETURN_THROWS();
}
// TODO Check Value for permission
if (permission < 0 || (permission & ~07777) != 0) {
zend_argument_value_error(4, "Invalid file permission value (must be between 0 and 07777)");
RETURN_THROWS();
}
if (map_size < 0) {
zend_argument_value_error(5, "must be greater than or equal to 0");
RETURN_THROWS();
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51 changes: 51 additions & 0 deletions ext/dba/tests/dba_permission.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,51 @@
--TEST--
DBA permission validation (invalid bits check)
--EXTENSIONS--
dba
--SKIPIF--
<?php
if (!in_array('flatfile', dba_handlers())) die('skip flatfile handler not available');
?>
--FILE--
<?php

$filename = __DIR__ . DIRECTORY_SEPARATOR . 'test.db';

function test($permission, $filename) {
try {
dba_open($filename, "c", "flatfile", $permission);
echo "OK\n";
} catch (ValueError $e) {
echo "VALUE_ERROR\n";
} catch (Throwable $e) {
echo "ERROR\n";
}

@unlink($filename);
}

/* valid permissions */
test(0777, $filename);
test(0755, $filename);
test(0644, $filename);
test(0000, $filename);

/* invalid permissions */
test(010000, $filename);
test(020000, $filename);
test(-1, $filename);

?>
--EXPECT--
OK
OK
OK
OK
VALUE_ERROR
VALUE_ERROR
VALUE_ERROR
--CLEAN--
<?php
$filename = __DIR__ . DIRECTORY_SEPARATOR . 'test.db';
@unlink($filename);
?>
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