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wp-content/plugins/smart-slider-3/Nextend/Framework/Misc/Base64/Decoder.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Nextend\Framework\Misc\Base64;
+
+class Decoder {
+
+    public static function decode($data) {
+
+        if (function_exists('base64_decode')) {
+            return base64_decode($data);
+        }
+
+        return self::decodeShim($data);
+    }
+
+    private static function decodeShim($input) {
+        $keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+        $i      = 0;
+        $output = "";
+
+        // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
+        $filter = $input;
+        $input  = preg_replace("[^A-Za-z0-9\+\/\=]", "", $input);
+        if ($filter != $input) {
+            return false;
+        }
+
+        do {
+            $enc1   = strpos($keyStr, substr($input, $i++, 1));
+            $enc2   = strpos($keyStr, substr($input, $i++, 1));
+            $enc3   = strpos($keyStr, substr($input, $i++, 1));
+            $enc4   = strpos($keyStr, substr($input, $i++, 1));
+            $chr1   = ($enc1 << 2) | ($enc2 >> 4);
+            $chr2   = (($enc2 & 15) << 4) | ($enc3 >> 2);
+            $chr3   = (($enc3 & 3) << 6) | $enc4;
+            $output = $output . chr((int)$chr1);
+            if ($enc3 != 64) {
+                $output = $output . chr((int)$chr2);
+            }
+            if ($enc4 != 64) {
+                $output = $output . chr((int)$chr3);
+            }
+        } while ($i < strlen($input));
+
+        return urldecode($output);
+    }
+}

wp-content/plugins/smart-slider-3/Nextend/Framework/Misc/Base64/Encoder.php

@@ -0,0 +1,52 @@
+<?php
+
+
+namespace Nextend\Framework\Misc\Base64;
+
+class Encoder {
+
+    public static function encode($data) {
+
+        if (function_exists('base64_encode')) {
+            return base64_encode($data);
+        }
+
+        return self::encodeShim($data);
+    }
+
+    private static function encodeShim($data) {
+        $b64     = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+        $o1      = $o2 = $o3 = $h1 = $h2 = $h3 = $h4 = $bits = $i = 0;
+        $ac      = 0;
+        $enc     = '';
+        $tmp_arr = array();
+        if (!$data) {
+            return $data;
+        }
+        do {
+            // pack three octets into four hexets
+            $o1   = self::charCodeAt($data, $i++);
+            $o2   = self::charCodeAt($data, $i++);
+            $o3   = self::charCodeAt($data, $i++);
+            $bits = $o1 << 16 | $o2 << 8 | $o3;
+            $h1   = $bits >> 18 & 0x3f;
+            $h2   = $bits >> 12 & 0x3f;
+            $h3   = $bits >> 6 & 0x3f;
+            $h4   = $bits & 0x3f;
+            // use hexets to index into b64, and append result to encoded string
+            $tmp_arr[$ac++] = self::charAt($b64, $h1) . self::charAt($b64, $h2) . self::charAt($b64, $h3) . self::charAt($b64, $h4);
+        } while ($i < strlen($data));
+        $enc = implode('', $tmp_arr);
+        $r   = (strlen($data) % 3);
+
+        return ($r ? substr($enc, 0, ($r - 3)) . substr('===', $r) : $enc);
+    }
+
+    private static function charCodeAt($data, $char) {
+        return ord(substr($data, $char, 1));
+    }
+
+    private static function charAt($data, $char) {
+        return substr($data, $char, 1);
+    }
+}