X-Git-Url: https://jfr.im/git/uguu.git/blobdiff_plain/0f8d4e9ce3695742de5024846279149f2e5cd7cd..044a28cd254c46ffef902482cac0ca79a082e4df:/static/php/includes/Upload.class.php

diff --git a/static/php/includes/Upload.class.php b/static/php/includes/Upload.class.php
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+++ b/static/php/includes/Upload.class.php
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+<?php
+/*
+ * Uguu
+ *
+ * @copyright Copyright (c) 2022 Go Johansson (nekunekus) <neku@pomf.se> <github.com/nokonoko>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+require_once 'Core.namespace.php';
+
+use Core\Database as Database;
+use Core\Response as Response;
+use Core\Settings as Settings;
+
+class Upload
+{
+    public static string $FILE_NAME;
+    public static string $FILE_EXTENSION;
+    public static string $FILE_MIME;
+    public static string $SHA1;
+    public static int $FILE_SIZE;
+    public static string $NEW_NAME;
+    public static string $NEW_NAME_FULL;
+    public static string $IP;
+    public mixed $file;
+
+    /**
+     * @param $file
+     *
+     * @return array
+     */
+    public function uploadFile($file): array
+    {
+        if (Settings::$ANTI_DUPE) {
+            (new Database())->antiDupe();
+        }
+
+        self::generateName($file);
+
+        if (!move_uploaded_file($file->tempfile, Settings::$FILES_ROOT . self::$NEW_NAME_FULL)) {
+            (new Response())->returnError('500', 'Failed to move file to destination', self::$FILE_NAME);
+        }
+
+        if (!chmod(Settings::$FILES_ROOT . self::$NEW_NAME_FULL, 0644)) {
+            (new Response())->returnError('500', 'Failed to change file permissions', self::$FILE_NAME);
+        }
+
+        (new Database())->newIntoDB();
+
+        return array(
+            'hash' => self::$SHA1,
+            'name' => self::$FILE_NAME,
+            'url' => Settings::$URL . rawurlencode(self::$NEW_NAME_FULL),
+            'size' => self::$FILE_SIZE
+        );
+    }
+
+    /**
+     * @param $file
+     *
+     * @return string
+     */
+    public function generateName($file): string
+    {
+        self::fileInfo($file);
+
+        do {
+            // Iterate until we reach the maximum number of retries
+            if (Settings::$FILES_RETRIES === 0) {
+                (new Response())->returnError('500', 'Gave up trying to find an unused name', self::$FILE_NAME);
+            }
+
+            for ($i = 0; $i < Settings::$NAME_LENGTH; ++$i) {
+                self::$NEW_NAME .= Settings::$ID_CHARSET[mt_rand(0, strlen(Settings::$ID_CHARSET))];
+            }
+
+            // Add the extension to the file name
+            if (isset(self::$FILE_EXTENSION) && self::$FILE_EXTENSION !== '') {
+                self::$NEW_NAME_FULL = self::$NEW_NAME . '.' . self::$FILE_EXTENSION;
+            }
+
+            // Check if the file hash is blacklisted
+            if (Settings::$BLACKLIST_DB) {
+                (new Database())->checkFileBlacklist();
+            }
+
+            // Check if extension or mime is blacklisted
+            if (Settings::$FILTER_MODE) {
+                self::checkMimeBlacklist();
+                self::checkExtensionBlacklist();
+            }
+        } while ((new Database())->dbCheckNameExists() > 0);
+
+        return self::$NEW_NAME_FULL;
+    }
+
+    /**
+     * @param $file
+     *
+     * @return void
+     */
+    public function fileInfo($file)
+    {
+        if (isset($_FILES['files'])) {
+            self::$FILE_NAME = $file->name;
+            self::$SHA1 = sha1_file($file->tempfile);
+            self::$FILE_SIZE = $file->size;
+            $finfo = finfo_open(FILEINFO_MIME_TYPE);
+            self::$FILE_MIME = finfo_file($finfo, $file->tempfile);
+            finfo_close($finfo);
+
+            if (Settings::$LOG_IP) {
+                self::$IP = $_SERVER['REMOTE_ADDR'];
+            } else {
+                self::$IP = null;
+            }
+            // Check if extension is a double-dot extension and, if true, override $ext
+            foreach (Settings::$DOUBLE_DOTS as $ddot) {
+                if (stripos(strrev(self::$FILE_NAME), $ddot) === 0) {
+                    self::$FILE_EXTENSION = strrev($ddot);
+                } else {
+                    self::$FILE_EXTENSION = pathinfo($file->name, PATHINFO_EXTENSION);
+                }
+            }
+        }
+    }
+
+    /**
+     * @return void
+     */
+    public function checkMimeBlacklist()
+    {
+        if (in_array(self::$FILE_MIME, Settings::$BLOCKED_MIME)) {
+            (new Response())->returnError('415', 'Filetype not allowed!', self::$FILE_NAME);
+        }
+    }
+
+    /**
+     * @return void
+     */
+    protected function checkExtensionBlacklist()
+    {
+        if (in_array(self::$FILE_EXTENSION, Settings::$BLOCKED_EXTENSIONS)) {
+            (new Response())->returnError('415', 'Filetype not allowed!', self::$FILE_NAME);
+        }
+    }
+
+    /**
+     * @param $files
+     *
+     * @return array
+     */
+    public function reFiles($files): array
+    {
+        $result = [];
+        $files = self::diverseArray($files);
+
+        foreach ($files as $file) {
+            $f = $this->file;
+            $f->name = $file['name'];
+            $f->mime = $file['type'];
+            $f->size = $file['size'];
+            $f->tempfile = $file['tmp_name'];
+            $f->error = $file['error'];
+            $result[] = $f;
+        }
+        return $result;
+    }
+
+    /**
+     * @param $files
+     *
+     * @return array
+     */
+    public function diverseArray($files): array
+    {
+        $result = [];
+
+        foreach ($files as $key1 => $value1) {
+            foreach ($value1 as $key2 => $value2) {
+                $result[$key2][$key1] = $value2;
+            }
+        }
+
+        return $result;
+    }
+}
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