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325 lines
12 KiB
325 lines
12 KiB
<?php
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/* Copyright © 2022 Pk11
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the “Software”),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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// Return source code
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if(isset($_GET['source'])) {
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header("Content-Type: text/plain");
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die(file_get_contents(basename($_SERVER['PHP_SELF'])));
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}
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/* vars.php should contain the following, but with your variables as needed:
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*
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* // Application constants
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* define('UPLOAD_PATH', 'image/'); // Folder to save images to
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* define('MAX_FILE_SIZE', 8 << 20); // Maximum image size, 8 MiB
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* define('ADMIN_ID', '<SHA1 uid from your cookies>'); // uid that is able to delete anything
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* define('UID_SALT', '<some string to salt uids with>');
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* define('MAX_POSTS', 50); // Max posts after which old posts will be auto deleted. Only existing posts count, not manually deleted ones.
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* define('DISCORD_WEBHOOK', 'https://discord.com/api/webhooks/<webhook id>/<webhook token>'); // A message will be sent to this webhook on post, for easier moderation
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*
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* // Database constants for PostgreSQL database
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* $DB_HOST = 'localhost';
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* $DB_NAME = '<db name>';
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* $DB_USER = '<db role name>';
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* $DB_PASSWORD = '<db role password>';
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*
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* You also need to make the following table:
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*
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* CEATE TABLE posts (
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* post_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
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* post_time TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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* user_id VARCHAR(40),
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* name VARCHAR(256),
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* comment VARCHAR(2048),
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* img VARCHAR(256)
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* );
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*/
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require_once('vars.php');
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//// Functions: ////
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// Adds a post to the database
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function post($name, $comment, $img, $save_cookie) {
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$extensions = [
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'image/bmp' => '.bmp',
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'image/gif' => '.gif',
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'image/jpeg' => '.jpg',
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'image/pjpeg' => '.jpg',
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'image/png' => '.png'
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];
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// Validate and move the uploaded image file, if necessary
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if(!empty($img['tmp_name'])) {
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if((($img['type'] == 'image/gif') || ($img['type'] == 'image/jpeg') || ($img['type'] == 'image/pjpeg')
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|| ($img['type'] == 'image/png') || ($img['type'] == 'image/bmp'))
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&& ($img['size'] > 0) && ($img['size'] <= MAX_FILE_SIZE)) {
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if($img['error'] == 0) {
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// Move the file to the target upload folder
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$target = UPLOAD_PATH . time() . $extensions[$img['type']];
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if(!move_uploaded_file($img['tmp_name'], $target)) {
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// The new image file move failed, so delete the temporary file and return an error
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@unlink($img['tmp_name']);
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return 'Unable to upload image, please contact the webmaster.';
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}
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}
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} else {
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// The image is not valid, so delete the temporary file and return an error
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@unlink($img['tmp_name']);
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return 'Your image must be a PNG, GIF, JPEG, or BMP image file no greater than ' . (MAX_FILE_SIZE >> 10) . ' KiB.';
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}
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}
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if(strlen($comment) > 2048)
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return 'Comment must be 2048 or fewer characters';
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if(empty($comment) && empty($target))
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return 'You must include an image and/or a comment';
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if($save_cookie) {
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$uid = $_COOKIE['uid'];
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if(empty($uid)) {
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$uid = sha1(time() . $img['tmp_name'] . $_SERVER['REMOTE_ADDR'] . UID_SALT);
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setcookie("uid", $uid, 0x7FFFFFFF);
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$_COOKIE['uid'] = $uid; // so that the checkbox is checked
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}
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}
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// Add post to database
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$query = "INSERT INTO posts (user_id, name, comment, img) VALUES ($1, $2, $3, $4)";
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$params = [
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empty($uid) ? NULL : $uid,
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empty($name) ? 'Anonymous' : htmlspecialchars($name),
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empty($comment) ? NULL : htmlspecialchars($comment),
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empty($target) ? NULL : basename($target)
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];
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webhook($params[1], $params[2], 'http://' . $_SERVER['SERVER_NAME'] . dirname($_SERVER['PHP_SELF']) . $target); // Send to discord for moderation
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pg_query_params($query, $params) or die('Query failed: ' . pg_last_error());
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return ""; // Success, no error
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}
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// Regex callback, makes >>quotes into links
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function quote_link($match) {
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$query = "SELECT post_id FROM posts WHERE post_id=$1";
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$result = pg_query_params($query, [$match[1]]) or die('Query failed: ' . pg_last_error());
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$row_count = pg_num_rows($result);
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pg_free_result($result);
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if($row_count > 0)
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return "<a href=\"#p{$match[1]}\">{$match[0]}</a>";
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else
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return "<del>{$match[0]}</del>";
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}
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// Prints the post list
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function show_posts() {
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$query = 'SELECT post_id, user_id, name, comment, img, TO_CHAR(post_time, \'YYYY-MM-DD HH24:MI (TZ)\') AS post_time FROM posts ORDER BY posts.post_time';
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$result = pg_query($query) or die('Query failed: ' . pg_last_error());
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// Clean up old posts
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$row_count = pg_num_rows($result);
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if($row_count > MAX_POSTS) {
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for($i = 0; $i < $row_count - MAX_POSTS; $i++) {
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$row = pg_fetch_array($result);
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cleanup($row['post_id']);
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}
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}
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// Print posts
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$show_delete = FALSE;
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echo '<form action="' . $_SERVER['PHP_SELF'] .'#bottom" method="post">';
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while($row = pg_fetch_array($result)) {
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echo "<fieldset id=\"p{$row['post_id']}\">";
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echo '<legend>';
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if((!empty($row['user_id']) && ($row['user_id'] == $_COOKIE['uid'])) || (!empty(ADMIN_ID) && ($_COOKIE['uid'] == ADMIN_ID))) {
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echo '<input type="checkbox" name="delete[]" value="' . $row['post_id'] . '" /> ';
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$show_delete = TRUE;
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}
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echo "<strong>{$row['name']}</strong> {$row['post_time']} ";
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echo "<a href=\"#p{$row['post_id']}\">#{$row['post_id']}</a> ";
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// Find references
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$post_id = pg_escape_string($row['post_id']);
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$ref_query = "SELECT post_id FROM posts WHERE comment LIKE '%>>$post_id%' ORDER BY post_time";
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$ref_result = pg_query_params($ref_query, []) or die('Query failed: ' . pg_last_error());
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while($ref = pg_fetch_array($ref_result))
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echo "<a href=\"#p{$ref['post_id']}\">>>{$ref['post_id']}</a> ";
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echo '</legend>';
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if(!empty($row['img'])){
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echo '<a href="' . UPLOAD_PATH . $row['img'] . '" target="_blank">';
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echo '<img src="' . UPLOAD_PATH . $row['img'] . '" alt="' . $row['img'] . '" />';
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echo '</a>';
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}
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// Process quotes, links, and newlines
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if(!empty($row['comment'])) {
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$comment = $row['comment'];
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$comment = preg_replace('/^>(?!>\d).+/m', '<strong>$0</strong>', $comment);
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$comment = preg_replace('/(?:https?|mailto|tel|ftp):[^\s]+/m', '<a href="$0">$0</a>', $comment);
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$comment = preg_replace_callback('/>>\s*(\d+)/', quote_link, $comment);
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$comment = str_replace("\n", "<br />", $comment);
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echo "<p>$comment</p>";
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}
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echo '</fieldset>';
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}
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pg_free_result($result);
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if($show_delete)
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echo '<p><input type="submit" name="submit" value="Delete" /></p>';
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echo '</form>';
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}
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// Removes a post from the database and its image
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function cleanup($id, $force = FALSE) {
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$query = "SELECT user_id, img FROM posts WHERE post_id=$1";
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$result = pg_query_params($query, [$id]) or die('Query failed: ' . pg_last_error());
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$row = pg_fetch_array($result);
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pg_free_result($result);
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if($force || $row['user_id'] == $_COOKIE['uid'] || (!empty(ADMIN_ID) && ($_COOKIE['uid'] == ADMIN_ID))) {
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unlink(UPLOAD_PATH . $row['img']);
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$query = "DELETE FROM posts WHERE post_id=$1";
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pg_query_params($query, [$id]) or die('Query failed: ' . pg_last_error());
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}
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}
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// Sends a webhook to Discord
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function webhook($name, $message, $img) {
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if(empty(DISCORD_WEBHOOK))
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return;
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$data = [
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'username' => $name,
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'embeds' => [
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[
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'title' => "New Post",
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'url' => 'http://' . $_SERVER['SERVER_NAME'] . $_SERVER['PHP_SELF'] . '#bottom',
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'description' => $message,
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'image' => [
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'url' => $img
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]
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]
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]
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];
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$curl = curl_init(DISCORD_WEBHOOK);
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curl_setopt($curl, CURLOPT_HEADER, false);
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($curl, CURLOPT_HTTPHEADER, array("Content-Type: application/json"));
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curl_setopt($curl, CURLOPT_POST, true);
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curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));
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curl_exec($curl);
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$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
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curl_close($curl);
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if($status != 204)
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die("Error: Sending webhook failed with status $status.");
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}
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?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="content-type" content="text/html;charset=utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<title>BBS | ピケ.コム</title>
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</head>
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<body>
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<p>
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[<a href="#bottom">bottom</a>]
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</p>
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<?php
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// Connect to the database
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$dbc = pg_connect("host=$DB_HOST dbname=$DB_NAME user=$DB_USER password=$DB_PASSWORD")
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or die('Could not connect: ' . pg_last_error());
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if($_POST['submit'] == 'Post') {
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// Grab the data from the POST
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$name = trim($_POST['name']);
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$comment = trim($_POST['comment']);
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$img = $_FILES['img'];
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$save_cookie = isset($_POST['save_cookie']);
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$err = post($name, $comment, $img, $save_cookie);
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} else if($_POST['submit'] == 'Delete' && !empty($_COOKIE['uid'])) {
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foreach($_POST['delete'] as $id) {
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cleanup($id);
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}
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}
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show_posts();
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pg_close($dbc);
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?>
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<form enctype="multipart/form-data" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>#bottom">
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<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo MAX_FILE_SIZE; ?>" />
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<fieldset id="bottom">
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<legend>New Post</legend>
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<table>
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<tr>
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<td><label for="name">Name:</label></td>
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<td><input type="text" id="name" name="name" value="<?php if(!empty($err)) echo $name; ?>" /></td>
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</tr>
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<tr>
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<td><label for="comment">Comment:</label></td>
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<td><textarea id="comment" name="comment" rows="10" cols="40"><?php if(!empty($err)) echo $comment; ?></textarea></td>
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</tr>
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<tr>
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<td><label for="img">Image:</label></td>
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<td><input type="file" id="img" name="img" /> (Limit: <?php echo MAX_FILE_SIZE >> 10; ?> KiB)</td>
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</tr>
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<tr>
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<td><label for="save-cookie">Save cookie:</label></td>
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<td><input type="checkbox" id="save-cookie" name="save_cookie" <?php if($_COOKIE['uid']) echo 'checked'; ?> /> (Allows deleting your own posts)</td>
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</tr>
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<tr>
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<td></td>
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<td><input type="submit" value="Post" name="submit" /></td>
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</tr>
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</table>
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<?php if(!empty($err)) echo "<br /><strong>$err</strong>"; ?>
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</fieldset>
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</form>
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<p>
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Old posts are automatically deleted once there are more than <?php echo MAX_POSTS; ?>, anything inappropriate will be deleted.
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</p>
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<p>
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[<a href="#top">top</a>]
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[<a href="javascript:window.location.reload();">reload</a>]
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[<a href="?source">source</a>]
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</p>
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<p>
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<a href="//validator.w3.org/check?uri=<?php echo urlencode('http://' . $_SERVER['SERVER_NAME'] . $_SERVER['PHP_SELF']); ?>" target="_blank">
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<img src="//www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0 Transitional" height="31" width="88" />
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</a>
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</p>
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</body>
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</html>
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