mambax7 / smartfaq

include/functions.image.php

<?php declare(strict_types=1);
/*
 * You may not change or alter any portion of this comment or credits
 * of supporting developers from this source code or any supporting source code
 * which is considered copyrighted (c) material of the original comment or credit authors.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

/**
 * @copyright      {@link https://xoops.org/ XOOPS Project}
 * @license        {@link https://www.gnu.org/licenses/gpl-2.0.html GNU GPL 2 or later}
 * @author         XOOPS Development Team, phppp (D.J., infomax@gmail.com)
 */

use XoopsModules\Smartfaq;

if (!defined('NEWBB_FUNCTIONS_IMAGE')) :
    define('NEWBB_FUNCTIONS_IMAGE', true);

    /**
     * @param $source
     * @return string
     */
    function sf_attachmentImage($source)
    {
        /** @var Smartfaq\Helper $helper */
        $helper = Smartfaq\Helper::getInstance();

        $img_path   = XOOPS_ROOT_PATH . '/' . $helper->getConfig('dir_attachments');
        $img_url    = XOOPS_URL . '/' . $helper->getConfig('dir_attachments');
        $thumb_path = $img_path . '/thumbs';
        $thumb_url  = $img_url . '/thumbs';

        $thumb     = $thumb_path . '/' . $source;
        $image     = $img_path . '/' . $source;
        $thumb_url = $thumb_url . '/' . $source;
        $image_url = $img_url . '/' . $source;

        $imginfo  = @getimagesize($image);
        $img_info = (count($imginfo) > 0) ? $imginfo[0] . 'X' . $imginfo[1] . ' px' : '';

        if ($helper->getConfig('max_image_width') > 0 && $helper->getConfig('max_image_height') > 0) {
            if ($imginfo[0] > $helper->getConfig('max_image_width')
                || $imginfo[1] > $helper->getConfig('max_image_height')) {
                //if (!file_exists($thumb_path.'/'.$source) && $imginfo[0] > $helper->getConfig('max_img_width')) {
                if (!file_exists($thumb_path . '/' . $source)) {
                    sf_createThumbnail($source, $helper->getConfig('max_image_width'));
                }
            }

            if ($imginfo[0] > $helper->getConfig('max_image_width')
                || $imginfo[1] > $helper->getConfig('max_image_height')) {
                $pseudo_width  = $helper->getConfig('max_image_width');
                $pseudo_height = $helper->getConfig('max_image_width') * ($imginfo[1] / $imginfo[0]);
                $pseudo_size   = "width='" . $pseudo_width . "px' height='" . $pseudo_height . "px'";
            }
            // irmtfan to fix Undefined variable: pseudo_height
            if (!empty($pseudo_height) && $helper->getConfig('max_image_height') > 0
                && $pseudo_height > $helper->getConfig('max_image_height')) {
                $pseudo_height = $helper->getConfig('max_image_height');
                $pseudo_width  = $helper->getConfig('max_image_height') * ($imginfo[0] / $imginfo[1]);
                $pseudo_size   = "width='" . $pseudo_width . "px' height='" . $pseudo_height . "px'";
            }
        }

        if (file_exists($thumb)) {
            $attachmentImage = '<a href="' . $image_url . '" title="' . $source . ' ' . $img_info . '" target="_blank">';
            $attachmentImage .= '<img src="' . $thumb_url . '" alt="' . $source . ' ' . $img_info . '">';
            $attachmentImage .= '</a>';
        } elseif (!empty($pseudo_size)) {
            $attachmentImage = '<a href="' . $image_url . '" title="' . $source . ' ' . $img_info . '" target="_blank">';
            $attachmentImage .= '<img src="' . $image_url . '" ' . $pseudo_size . ' alt="' . $source . ' ' . $img_info . '">';
            $attachmentImage .= '</a>';
        } elseif (file_exists($image)) {
            $attachmentImage = '<img src="' . $image_url . '" alt="' . $source . ' ' . $img_info . '">';
        } else {
            $attachmentImage = '';
        }

        return $attachmentImage;
    }

    /**
     * @param $source
     * @param $thumb_width
     * @return bool
     */
    function sf_createThumbnail($source, $thumb_width)
    {
        /** @var Smartfaq\Helper $helper */
        $helper = Smartfaq\Helper::getInstance();

        $img_path   = XOOPS_ROOT_PATH . '/' . $helper->getConfig('dir_attachments');
        $thumb_path = $img_path . '/thumbs';
        $src_file   = $img_path . '/' . $source;
        $new_file   = $thumb_path . '/' . $source;
        //$imageLibs = sf_getImageLibs();

        if (!filesize($src_file) || !is_readable($src_file)) {
            return false;
        }

        if (!is_dir($thumb_path) || !is_writable($thumb_path)) {
            return false;
        }

        $imginfo = @getimagesize($src_file);

        if (null === $imginfo) {
            return false;
        }
        if ($imginfo[0] < $thumb_width) {
            return false;
        }

        $newWidth  = (int)min($imginfo[0], $thumb_width);
        $newHeight = (int)($imginfo[1] * $newWidth / $imginfo[0]);

        if (1 == $helper->getConfig('image_lib') || 0 == $helper->getConfig('image_lib')) {

It seems like you are loosely comparing $helper->getConfig('image_lib') of type mixed|null to 0; this is ambiguous as not only 0 == 0 is true, but null == 0 is true, too. Consider using a strict comparison ===.

            if (preg_match('#[A-Z]:|\\\\#Ai', __FILE__)) {
                $cur_dir     = __DIR__;
                $src_file_im = '"' . $cur_dir . '\\' . str_replace('/', '\\', $src_file) . '"';
                $new_file_im = '"' . $cur_dir . '\\' . str_replace('/', '\\', $new_file) . '"';
            } else {
                $src_file_im = @escapeshellarg($src_file);
                $new_file_im = @escapeshellarg($new_file);
            }
            $path           = empty($helper->getConfig('path_magick')) ? '' : $helper->getConfig('path_magick') . '/';
            $magick_command = $path . 'convert -auto-orient -quality 85 -antialias -sample ' . $newWidth . 'x' . $newHeight . ' ' . $src_file_im . ' +profile "*" ' . str_replace('\\', '/', $new_file_im);

            @passthru($magick_command);

It seems like you do not handle an error condition for passthru(). This can introduce security issues, and is generally not recommended.

            if (file_exists($new_file)) {
                return true;
            }
        }

        if (2 == $helper->getConfig('image_lib') || 0 == $helper->getConfig('image_lib')) {

It seems like you are loosely comparing $helper->getConfig('image_lib') of type mixed|null to 0; this is ambiguous as not only 0 == 0 is true, but null == 0 is true, too. Consider using a strict comparison ===.

            $path = empty($helper->getConfig('path_netpbm')) ? '' : $helper->getConfig('path_netpbm') . '/';
            if (preg_match('/\.png$/i', $source)) {
                $cmd = $path . "pngtopnm $src_file | " . $path . "pnmscale -xysize $newWidth $newHeight | " . $path . "pnmtopng > $new_file";
            } elseif (preg_match('/\.(jpg|jpeg)$/i', $source)) {
                $cmd = $path . "jpegtopnm $src_file | " . $path . "pnmscale -xysize $newWidth $newHeight | " . $path . "ppmtojpeg -quality=90 > $new_file";
            } elseif (preg_match('/\.gif$/i', $source)) {
                $cmd = $path . "giftopnm $src_file | " . $path . "pnmscale -xysize $newWidth $newHeight | ppmquant 256 | " . $path . "ppmtogif > $new_file";
            }

            @exec($cmd, $output, $retval);

It seems like you do not handle an error condition for exec(). This can introduce security issues, and is generally not recommended.

            if (file_exists($new_file)) {
                return true;
            }
        }

        $type            = $imginfo[2];
        $supported_types = [];

        if (!extension_loaded('gd')) {
            return false;
        }
        if (function_exists('imagegif')) {
            $supported_types[] = 1;
        }
        if (function_exists('imagejpeg')) {
            $supported_types[] = 2;
        }
        if (function_exists('imagepng')) {
            $supported_types[] = 3;
        }

        $imageCreateFunction = function_exists('imagecreatetruecolor') ? 'imagecreatetruecolor' : 'imagecreate';

        if (in_array($type, $supported_types, true)) {
            switch ($type) {
                case 1:
                    if (!function_exists('imagecreatefromgif')) {
                        return false;
                    }
                    $im     = imagecreatefromgif($src_file);
                    $new_im = imagecreate($newWidth, $newHeight);
                    imagecopyresized($new_im, $im, 0, 0, 0, 0, $newWidth, $newHeight, $imginfo[0], $imginfo[1]);
                    imagegif($new_im, $new_file);
                    imagedestroy($im);
                    imagedestroy($new_im);
                    break;
                case 2:
                    $im     = imagecreatefromjpeg($src_file);
                    $new_im = $imageCreateFunction($newWidth, $newHeight);
                    imagecopyresized($new_im, $im, 0, 0, 0, 0, $newWidth, $newHeight, $imginfo[0], $imginfo[1]);
                    imagejpeg($new_im, $new_file, 90);
                    imagedestroy($im);
                    imagedestroy($new_im);
                    break;
                case 3:
                    $im     = imagecreatefrompng($src_file);
                    $new_im = $imageCreateFunction($newWidth, $newHeight);
                    imagecopyresized($new_im, $im, 0, 0, 0, 0, $newWidth, $newHeight, $imginfo[0], $imginfo[1]);
                    imagepng($new_im, $new_file);
                    imagedestroy($im);
                    imagedestroy($new_im);
                    break;
            }
        }

        if (file_exists($new_file)) {
            return true;
        }

        return false;
    }

endif;