1 files changed, 0 insertions, 142 deletions
diff --git a/libs/plugins/function.math.php b/libs/plugins/function.math.php
deleted file mode 100644
index f9cf67fe..00000000
--- a/libs/plugins/function.math.php
+++ /dev/null
@@ -1,142 +0,0 @@
-<?php
-/**
- * Smarty plugin
- * This plugin is only for Smarty2 BC
- *
- * @package    Smarty
- * @subpackage PluginsFunction
- */
-/**
- * Smarty {math} function plugin
- * Type:     function
- * Name:     math
- * Purpose:  handle math computations in template
- *
- * @link   https://www.smarty.net/manual/en/language.function.math.php {math}
- *           (Smarty online manual)
- * @author Monte Ohrt <monte at ohrt dot com>
- *
- * @param array                    $params   parameters
- * @param Smarty_Internal_Template $template template object
- *
- * @return string|null
- */
-function smarty_function_math($params, $template)
-{
-    static $_allowed_funcs =
-        array(
-            'int'   => true,
-            'abs'   => true,
-            'ceil'  => true,
-            'acos'   => true,
-            'acosh'   => true,
-            'cos'   => true,
-            'cosh'   => true,
-            'deg2rad'   => true,
-            'rad2deg'   => true,
-            'exp'   => true,
-            'floor' => true,
-            'log'   => true,
-            'log10' => true,
-            'max'   => true,
-            'min'   => true,
-            'pi'    => true,
-            'pow'   => true,
-            'rand'  => true,
-            'round' => true,
-            'asin'   => true,
-            'asinh'   => true,
-            'sin'   => true,
-            'sinh'   => true,
-            'sqrt'  => true,
-            'srand' => true,
-            'atan'   => true,
-            'atanh'   => true,
-            'tan'   => true,
-            'tanh'   => true
-        );
-
-    // be sure equation parameter is present
-    if (empty($params[ 'equation' ])) {
-        trigger_error("math: missing equation parameter", E_USER_WARNING);
-        return;
-    }
-    $equation = $params[ 'equation' ];
-
-    // Remove whitespaces
-    $equation = preg_replace('/\s+/', '', $equation);
-
-    // Adapted from https://www.php.net/manual/en/function.eval.php#107377
-    $number = '(?:\d+(?:[,.]\d+)?|pi|π)'; // What is a number
-    $functionsOrVars = '((?:0x[a-fA-F0-9]+)|([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*))';
-    $operators = '[,+\/*\^%-]'; // Allowed math operators
-    $regexp = '/^(('.$number.'|'.$functionsOrVars.'|('.$functionsOrVars.'\s*\((?1)*\)|\((?1)*\)))(?:'.$operators.'(?1))?)+$/';
-
-    if (!preg_match($regexp, $equation)) {
-        trigger_error("math: illegal characters", E_USER_WARNING);
-        return;
-    }
-
-    // make sure parenthesis are balanced
-    if (substr_count($equation, '(') !== substr_count($equation, ')')) {
-        trigger_error("math: unbalanced parenthesis", E_USER_WARNING);
-        return;
-    }
-
-    // disallow backticks
-    if (strpos($equation, '`') !== false) {
-        trigger_error("math: backtick character not allowed in equation", E_USER_WARNING);
-        return;
-    }
-
-    // also disallow dollar signs
-    if (strpos($equation, '$') !== false) {
-        trigger_error("math: dollar signs not allowed in equation", E_USER_WARNING);
-        return;
-    }
-    foreach ($params as $key => $val) {
-        if ($key !== 'equation' && $key !== 'format' && $key !== 'assign') {
-            // make sure value is not empty
-            if (strlen($val) === 0) {
-                trigger_error("math: parameter '{$key}' is empty", E_USER_WARNING);
-                return;
-            }
-            if (!is_numeric($val)) {
-                trigger_error("math: parameter '{$key}' is not numeric", E_USER_WARNING);
-                return;
-            }
-        }
-    }
-    // match all vars in equation, make sure all are passed
-    preg_match_all('!(?:0x[a-fA-F0-9]+)|([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)!', $equation, $match);
-    foreach ($match[ 1 ] as $curr_var) {
-        if ($curr_var && !isset($params[ $curr_var ]) && !isset($_allowed_funcs[ $curr_var ])) {
-            trigger_error(
-                "math: function call '{$curr_var}' not allowed, or missing parameter '{$curr_var}'",
-                E_USER_WARNING
-            );
-            return;
-        }
-    }
-    foreach ($params as $key => $val) {
-        if ($key !== 'equation' && $key !== 'format' && $key !== 'assign') {
-            $equation = preg_replace("/\b$key\b/", " \$params['$key'] ", $equation);
-        }
-    }
-    $smarty_math_result = null;
-    eval("\$smarty_math_result = " . $equation . ";");
-
-    if (empty($params[ 'format' ])) {
-        if (empty($params[ 'assign' ])) {
-            return $smarty_math_result;
-        } else {
-            $template->assign($params[ 'assign' ], $smarty_math_result);
-        }
-    } else {
-        if (empty($params[ 'assign' ])) {
-            printf($params[ 'format' ], $smarty_math_result);
-        } else {
-            $template->assign($params[ 'assign' ], sprintf($params[ 'format' ], $smarty_math_result));
-        }
-    }
-}