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bug 1329 fixed: add a check_input_parameter function to prevent hacking
attempts. git-svn-id: http://piwigo.org/svn/branches/2.0@4495 68402e56-0260-453c-a942-63ccdbb3a9ee
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@@ -1492,4 +1492,47 @@ function get_comment_post_key($image_id)
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)
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);
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}
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/*
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* breaks the script execution if the given value doesn't match the given
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* pattern. This should happen only during hacking attempts.
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*
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* @param string param_name
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* @param mixed param_value
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* @param boolean is_array
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* @param string pattern
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*
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* @return void
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*/
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function check_input_parameter($param_name, $param_value, $is_array, $pattern)
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{
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// it's ok if the input parameter is null
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if (empty($param_value))
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{
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return true;
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}
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if ($is_array)
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{
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if (!is_array($param_value))
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{
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die('[Hacking attempt] the input parameter "'.$param_name.'" should be an array');
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}
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foreach ($param_value as $item_to_check)
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{
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if (!preg_match($pattern, $item_to_check))
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{
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die('[Hacking attempt] an item is not valid in input parameter "'.$param_name.'"');
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}
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}
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}
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else
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{
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if (!preg_match($pattern, $param_value))
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{
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die('[Hacking attempt] the input parameter "'.$param_name.'" is not valid');
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}
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}
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}
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?>
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