Base64 class

Author: Dogan Ucar

composer.json

@@ -16,7 +16,8 @@
   },
   "require": {
     "doganoo/php-algorithms": "*",
-    "apache/log4php": "2.3.0"
+    "apache/log4php": "2.3.0",
+    "ext-fileinfo": "*"
   },
   "require-dev": {
     "phpunit/phpunit": "6.5"

composer.lock

@@ -0,0 +1,115 @@
+<?php
+/**
+ * MIT License
+ *
+ * Copyright (c) 2018 Dogan Ucar, <dogan@dogan-ucar.de>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+namespace doganoo\PHPUtil\Crypto;
+
+/**
+ * Class Base64
+ * @package doganoo\PHPUtil\Crypto
+ */
+class Base64 {
+
+    /** @var null|mixed $data */
+    private $data = null;
+    /** @var null|array $mimeType */
+    private $mimeType = null;
+
+    /**
+     * Base64 constructor.
+     * @param null $data
+     */
+    public function __construct($data = null) {
+        $this->setData($data);
+    }
+
+    /**
+     * @param $data
+     */
+    public function setData($data): void {
+        $this->data = $data;
+    }
+
+    /**
+     * @return mixed|null
+     */
+    public function getData() {
+        return $this->data;
+    }
+
+    /**
+     * @return string
+     */
+    public function encode(): string {
+        $data = base64_encode($this->getData());
+        $this->setData($data);
+        return $this->getData();
+    }
+
+    /**
+     * @param bool $strict
+     * @return mixed|null
+     */
+    public function decode(bool $strict = true){
+        $data = base64_decode($this->getData(), $strict);
+        $this->setData($data);
+        return $this->getData();
+    }
+
+    /**
+     * @param $data
+     * @return bool
+     */
+    public static function isBase64($data):bool {
+        if (null === $data) return false;
+        if (!is_string($data)) return false;
+
+        $decoded = base64_decode($data);
+        $encoded = base64_encode($decoded);
+
+        return $data === $encoded;
+
+    }
+
+    /**
+     * @return array|null
+     */
+    public function getMimeType():?array {
+        if (!Base64::isBase64($this->getData())) return null;
+
+        $decoded = $this->decode();
+        $handle = finfo_open();
+
+        $mimeType = finfo_buffer(
+            $handle
+            , $decoded
+            , FILEINFO_MIME_TYPE
+        );
+
+        $this->mimeType = [$mimeType];
+
+        return $this->mimeType;
+    }
+
+}

src/Crypto/Base64.php

@@ -52,9 +52,10 @@ public function __construct($value) {
      * @return bool
      */
     public function equals($value) {
-        if ($value instanceof PHPString) {
+        if ($value instanceof StringClass) {
             $value = $value->getValue();
         }
+        if (!is_string($value)) return false;
         return strcmp($this->value, $value) === 0;
     }
 
@@ -83,10 +84,11 @@ public function setValue($value) {
      * @return bool
      */
     public function equalsIgnoreCase($value) {
-        if ($value instanceof PHPString) {
+        if ($value instanceof StringClass) {
             $value = $value->getValue();
         }
-        return strcasecmp($this->value, $value) === 0;
+        if (!is_string($value)) return false;
+            return strcasecmp($this->value, $value) === 0;
     }
 
     /**