remove autoload section in composer.json

[github/wallabag/wallabag.git] / inc / 3rdparty / htmlpurifier / HTMLPurifier / URIScheme / data.php

<?php\r
\r
/**\r
 * Implements data: URI for base64 encoded images supported by GD.\r
 */\r
class HTMLPurifier_URIScheme_data extends HTMLPurifier_URIScheme\r
{\r
    /**\r
     * @type bool\r
     */\r
    public $browsable = true;\r
\r
    /**\r
     * @type array\r
     */\r
    public $allowed_types = array(\r
        // you better write validation code for other types if you\r
        // decide to allow them\r
        'image/jpeg' => true,\r
        'image/gif' => true,\r
        'image/png' => true,\r
    );\r
    // this is actually irrelevant since we only write out the path\r
    // component\r
    /**\r
     * @type bool\r
     */\r
    public $may_omit_host = true;\r
\r
    /**\r
     * @param HTMLPurifier_URI $uri\r
     * @param HTMLPurifier_Config $config\r
     * @param HTMLPurifier_Context $context\r
     * @return bool\r
     */\r
    public function doValidate(&$uri, $config, $context)\r
    {\r
        $result = explode(',', $uri->path, 2);\r
        $is_base64 = false;\r
        $charset = null;\r
        $content_type = null;\r
        if (count($result) == 2) {\r
            list($metadata, $data) = $result;\r
            // do some legwork on the metadata\r
            $metas = explode(';', $metadata);\r
            while (!empty($metas)) {\r
                $cur = array_shift($metas);\r
                if ($cur == 'base64') {\r
                    $is_base64 = true;\r
                    break;\r
                }\r
                if (substr($cur, 0, 8) == 'charset=') {\r
                    // doesn't match if there are arbitrary spaces, but\r
                    // whatever dude\r
                    if ($charset !== null) {\r
                        continue;\r
                    } // garbage\r
                    $charset = substr($cur, 8); // not used\r
                } else {\r
                    if ($content_type !== null) {\r
                        continue;\r
                    } // garbage\r
                    $content_type = $cur;\r
                }\r
            }\r
        } else {\r
            $data = $result[0];\r
        }\r
        if ($content_type !== null && empty($this->allowed_types[$content_type])) {\r
            return false;\r
        }\r
        if ($charset !== null) {\r
            // error; we don't allow plaintext stuff\r
            $charset = null;\r
        }\r
        $data = rawurldecode($data);\r
        if ($is_base64) {\r
            $raw_data = base64_decode($data);\r
        } else {\r
            $raw_data = $data;\r
        }\r
        // XXX probably want to refactor this into a general mechanism\r
        // for filtering arbitrary content types\r
        $file = tempnam("/tmp", "");\r
        file_put_contents($file, $raw_data);\r
        if (function_exists('exif_imagetype')) {\r
            $image_code = exif_imagetype($file);\r
            unlink($file);\r
        } elseif (function_exists('getimagesize')) {\r
            set_error_handler(array($this, 'muteErrorHandler'));\r
            $info = getimagesize($file);\r
            restore_error_handler();\r
            unlink($file);\r
            if ($info == false) {\r
                return false;\r
            }\r
            $image_code = $info[2];\r
        } else {\r
            trigger_error("could not find exif_imagetype or getimagesize functions", E_USER_ERROR);\r
        }\r
        $real_content_type = image_type_to_mime_type($image_code);\r
        if ($real_content_type != $content_type) {\r
            // we're nice guys; if the content type is something else we\r
            // support, change it over\r
            if (empty($this->allowed_types[$real_content_type])) {\r
                return false;\r
            }\r
            $content_type = $real_content_type;\r
        }\r
        // ok, it's kosher, rewrite what we need\r
        $uri->userinfo = null;\r
        $uri->host = null;\r
        $uri->port = null;\r
        $uri->fragment = null;\r
        $uri->query = null;\r
        $uri->path = "$content_type;base64," . base64_encode($raw_data);\r
        return true;\r
    }\r
\r
    /**\r
     * @param int $errno\r
     * @param string $errstr\r
     */\r
    public function muteErrorHandler($errno, $errstr)\r
    {\r
    }\r
}\r