\n";
include __DIR__ . "/application/views/" . $___NAME . ".php";
echo "\n";
}
function isTrue(string $str): bool {
$str = strtolower($str);
return in_array($str, ["yes","true","y","t","on","enabled","1","?1"]);
}
function reArrayFiles(&$file_post) {
$file_ary = [];
$file_count = count($file_post['name']);
$file_keys = array_keys($file_post);
for ($i=0; $i<$file_count; $i++) {
if ($file_post["error"][$i] !== UPLOAD_ERR_OK)
continue;
foreach ($file_keys as $key) {
$file_ary[$i][$key] = $file_post[$key][$i];
}
}
return $file_ary;
}
function renderPost(string $contents): string {
$contents = htmlentities($contents);
$contents = nl2br($contents, false);
$lines = explode("\n", $contents);
$contents = "";
$lineBuf = [];
$inQuote = false;
foreach ($lines as $ln) {
if (str_starts_with($ln, "> ")) {
if (!$inQuote) {
$contents .= implode("\n", $lineBuf);
$lineBuf = [];
$inQuote = true;
}
$lineBuf []= substr($ln, 5);
} else {
if ($inQuote) {
$contents .= "\n" . implode("\n", $lineBuf) . "
\n";
$lineBuf = [];
$inQuote = false;
if (trim($ln) === "
")
continue;
}
$lineBuf []= $ln;
}
}
if ($inQuote) {
$contents .= "" . implode("\n", $lineBuf) . "
";
} else {
$contents .= implode("\n", $lineBuf);
}
return $contents;
}
function env(string $key): ?string {
$val = getenv($key);
if ($val === false)
return null;
return $val;
}
require_once __DIR__ . "/vendor/autoload.php";
require_once __DIR__ . "/application/i18n.php";
i18n_locale("de");
$db = null;
try {
$db = new Database(Database::getConnectionString("db", getenv("POSTGRES_USER"), getenv("POSTGRES_PASSWORD"), getenv("POSTGRES_DBNAME")));
} catch (DatabaseConnectionException $ex) {
Messaging::error([
Messaging::bold(__("Failed to connect to database!")),
Messaging::italic($ex->getMessage()),
]);
exit;
}
$GLOBALS["db"] = &$db;
$db->ensureTable(User::class);
$db->ensureTable(Topic::class);
$db->ensureTable(Post::class);
$db->ensureTable(Attachment::class);
$superuser = new User();
$superuser->id = "SUPERUSER";
if (!$db->fetch($superuser)) {
$superUserPassword = base64_encode(random_bytes(12));
$superuser->name = "superuser";
$superuser->email = "";
$superuser->passwordHash = password_hash($superUserPassword, PASSWORD_DEFAULT);
$superuser->displayName = "SuperUser";
$superuser->created = new \DateTimeImmutable();
$superuser->permissionMask = PHP_INT_MAX;
$superuser->passwordResetRequired = false;
$superuser->activated = true;
$superuser->activationToken = "";
$db->insert($superuser);
Messaging::info([
Messaging::bold("Superuser account created"),
[
"Username" => $superuser->name,
"Password" => $superUserPassword,
],
"Please note that the password can only be shown this time, so please note it down!",
]);
exit;
}
$currentUser = RequestUtils::getAuthorizedUser($db);
$GLOBALS["currentUser"] = &$currentUser;
// initialization finished
if ($_action === "auth") {
if ($currentUser) {
header("Location: " . ($_GET["next"] ?? "."));
exit;
}
if (RequestUtils::isRequestMethod("POST")) {
$username = RequestUtils::getRequiredField("username");
$password = RequestUtils::getRequiredField("password");
$user = new User();
$user->name = $username;
if (!$db->fetchWhere($user, "name") || !password_verify($password, $user->passwordHash)) {
RequestUtils::triggerFormError(__("Username or password incorrect!"));
}
if (!$user->activated) {
RequestUtils::triggerFormError(__("Please activate your user account first!"));
}
RequestUtils::setAuthorizedUser($user);
header("Location: " . ($_GET["next"] ?? "."));
} else {
_view("template_start", ["_title" => __("Log in")]);
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("form_login");
_view("template_end");
}
} elseif ($_action === "register") {
if ($currentUser) {
header("Location: " . ($_GET["next"] ?? "."));
exit;
}
if (!REGISTRATION_ENABLED) {
http_response_code(403);
Messaging::error(__("Public registration disabled"));
exit;
}
if (RequestUtils::isRequestMethod("POST")) {
$doNotFill = $_POST["username"] ?? null;
if (!empty($doNotFill)) {
sleep(10);
http_response_code(204);
exit;
}
$username = RequestUtils::getRequiredField("df82a9bc21");
$password = RequestUtils::getRequiredField("password");
$passwordRetype = RequestUtils::getRequiredField("password_retype");
$email = trim(RequestUtils::getRequiredField("email"));
$displayName = RequestUtils::getRequiredField("display_name");
$captcha = RequestUtils::getRequiredField("captcha");
if ($captcha !== ($_SESSION["captchaPhrase"] ?? null)) {
RequestUtils::triggerFormError(__("Incorrect CAPTCHA text!"));
}
// usernames are always lowercase
$username = strtolower($username);
if ($password !== $passwordRetype) {
RequestUtils::triggerFormError(__("Passwords do not match!"));
}
if (strlen($password) < 8) {
RequestUtils::triggerFormError(__("Password too short! Your password must consist of 8 or more characters"));
}
if (!ValidationUtils::isUsernameValid($username)) {
RequestUtils::triggerFormError(__("Username has an invalid format"));
}
if (filter_var($email, FILTER_VALIDATE_EMAIL) === false) {
RequestUtils::triggerFormError(__("Invalid email address"));
}
$user = new User();
$user->name = $username;
$user->email = $email;
if ($db->fetchWhere($user, "name")) {
RequestUtils::triggerFormError(__("This username is already taken!"));
}
if ($db->fetchWhere($user, "email")) {
RequestUtils::triggerFormError(__("This email address is already in use!"));
}
// re-create user so we don't forget to clear properties set by the above queries
$user = new User();
$user->id = $db->generateId();
$user->displayName = $displayName;
$user->name = $username;
$user->email = $email;
$user->passwordHash = password_hash($password, PASSWORD_DEFAULT);
$user->permissionMask = UserPermissions::GROUP_USER;
$user->passwordResetRequired = false;
$user->activated = false;
$user->activationToken = $db->generateId(12);
$user->created = new \DateTimeImmutable();
Transport::fromDsn(env("MAILER_DSN"))->send(
(new Email())
->from(env("MAILER_FROM"))
->to(new Address($email, $displayName))
->text(__(
"Welcome to %forum_title%, %user_display_name%!\n" .
"\n" .
"Please activate your account by clicking the link below:\n" .
"%activation_link%\n" .
"\n" .
"Kind regards,\n" .
"%forum_copyright%",
params: [
"forum_title" => (env("MYSTIC_FORUM_TITLE") ?? "Forum"),
"user_display_name" => $displayName,
"activation_link" => env("PUBLIC_URL") . "?_action=verifyemail&token=" . urlencode($user->activationToken) . "&sig=" . urlencode(base64_encode(hash("sha256", env("SECRET") . $user->activationToken . $user->id, true))),
"forum_copyright" => (env("MYSTIC_FORUM_COPYRIGHT") ?? env("MYSTIC_FORUM_TITLE") ?? "Forum")
]
))
->subject("Please activate your account")
);
$db->insert($user);
Messaging::info(
Messaging::html(nl2br(htmlentities(__("Your account has been created!\nPlease check your emails for an activation link!"), true)))
);
} else {
_view("template_start", ["_title" => __("Register")]);
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("form_register");
_view("template_end");
}
} elseif ($_action === "verifyemail") {
RequestUtils::ensureRequestMethod("GET");
$token = $_GET["token"] ?? throw new Exception("Missing token");
$sig = $_GET["sig"] ?? throw new Exception("Missing signature");
$user = new User();
$user->activated = false;
$user->activationToken = $token;
if (!$db->fetchWhere($user, [ "activated", "activation_token" ])) {
http_response_code(400);
Messaging::error(__("Invalid token"));
exit;
}
$expectedSignature = base64_encode(hash("sha256", env("SECRET") . $user->activationToken . $user->id, true));
if ($expectedSignature !== $sig) {
http_response_code(400);
Messaging::error(__("Invalid signature."));
exit;
}
$user->activated = true;
$user->activationToken = "";
if (!$db->update($user)) {
http_response_code(400);
Messaging::error(__("Failed to update user"));
exit;
}
Messaging::info([
Messaging::html(nl2br(__(
"Your account has been activated!\nPlease click %link%here%/link% to log in!",
[
"link" => '',
"/link" => '',
]
)), true),
]);
} elseif ($_action === "logout") {
RequestUtils::unsetAuthorizedUser();
header("Location: " . ($_GET["next"] ?? "."));
} elseif ($_action === "viewtopic") {
$topicId = $_GET["topic"] ?? throw new Exception("Missing topic id");
$topic = new Topic();
$topic->id = $topicId;
if (!$db->fetch($topic)) {
http_response_code(404);
Messaging::error("No topic exists with this id");
exit;
}
if (RequestUtils::isRequestMethod("POST")) {
if (!$currentUser) {
http_response_code(403);
Messaging::error("You need to be logged in to add new posts!");
exit;
}
$attachments = reArrayFiles($_FILES["files"]);
if (count($attachments) > MAX_ATTACHMENT_COUNT)
RequestUtils::triggerFormError(__("Too many attachments"));
// check all attachments before saving one
foreach ($attachments as $att) {
if ($att["size"] > MAX_ATTACHMENT_SIZE) {
RequestUtils::triggerFormError(__("Individual file size exceeded"));
}
}
$message = trim(RequestUtils::getRequiredField("message"));
if (strlen($message) < 1 || strlen($message) > 0x8000) {
RequestUtils::triggerFormError(__("Message too short or too long!"));
}
$post = new Post();
$post->id = $db->generateId();
$post->authorId = $currentUser->id;
$post->topicId = $topicId;
$post->content = $message;
$post->postDate = new DateTimeImmutable();
$post->deleted = false;
$post->edited = false;
$db->insert($post);
foreach ($attachments as $att) {
[
"name" => $name,
"type" => $type,
"tmp_name" => $tmpName,
] = $att;
$attachment = new Attachment();
$attachment->id = $db->generateId();
$attachment->name = $name;
$attachment->mimeType = $type;
$attachment->postId = $post->id;
$attachment->contents = file_get_contents($tmpName);
$db->insert($attachment);
}
header("Location: ?_action=viewtopic&topic=" . urlencode($topicId) . "#form");
} else {
$posts = $db->fetchCustom(Post::class, 'WHERE topic_id = $1 ORDER BY post_date', [ $topicId ]);
$userCache = [];
$topicAuthor = null;
if ($topic->createdBy !== null) {
$topicAuthor = new User();
$topicAuthor->id = $topic->createdBy;
if (!$db->fetch($topicAuthor)) {
$topicAuthor = null;
}
}
_view("template_start", ["_title" => $topic->title]);
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("view_topic_start", ["topic" => $topic, "topicAuthor" => $topicAuthor]);
/** @var Post $post */
foreach ($posts as $post) {
/** @var ?User $topicAuthor */
$topicAuthor = null;
if ($post->authorId !== null && !isset($userCache[$post->authorId])) {
$usr = new User();
$usr->id = $post->authorId;
if ($db->fetch($usr))
$userCache[$post->authorId] = &$usr;
}
if (isset($userCache[$post->authorId]))
$topicAuthor = &$userCache[$post->authorId];
$attachments = $db->fetchCustom(Attachment::class, 'WHERE post_id = $1', [ $post->id ]);
_view("view_post", [
"post" => $post,
"postAuthor" => $topicAuthor,
"attachments" => $attachments,
]);
}
_view("view_topic_end");
if ($currentUser) {
_view("form_addpost");
}
_view("template_end");
}
} elseif ($_action === "newtopic") {
if (!$currentUser) {
http_response_code(403);
Messaging::error("You need to be logged in to create new topics!");
exit;
}
if (RequestUtils::isRequestMethod("POST")) {
$title = trim(RequestUtils::getRequiredField("title"));
$message = trim(RequestUtils::getRequiredField("message"));
$attachments = reArrayFiles($_FILES["files"]);
if (count($attachments) > MAX_ATTACHMENT_COUNT)
RequestUtils::triggerFormError(__("Too many attachments"));
// check all attachments before saving one
foreach ($attachments as $att) {
if ($att["size"] > MAX_ATTACHMENT_SIZE) {
RequestUtils::triggerFormError(__("Individual file size exceeded"));
}
}
if (strlen($title) < 1 || strlen($title) > 255) {
RequestUtils::triggerFormError(__("Title too short or too long!"));
}
if (strlen($message) < 1 || strlen($message) > 0x8000) {
RequestUtils::triggerFormError(__("Message too short or too long!"));
}
$topic = new Topic();
$topic->createdBy = $currentUser->id;
$topic->id = $db->generateId();
$topic->title = $title;
$topic->creationDate = new DateTimeImmutable();
$db->insert($topic);
$post = new Post();
$post->id = $db->generateId();
$post->authorId = $currentUser->id;
$post->topicId = $topic->id;
$post->content = $message;
$post->postDate = $topic->creationDate;
$post->deleted = false;
$post->edited = false;
$db->insert($post);
foreach ($attachments as $att) {
[
"name" => $name,
"type" => $type,
"tmp_name" => $tmpName,
] = $att;
$attachment = new Attachment();
$attachment->id = $db->generateId();
$attachment->name = $name;
$attachment->mimeType = $type;
$attachment->postId = $post->id;
$attachment->contents = file_get_contents($tmpName);
$db->insert($attachment);
}
header("Location: ?_action=viewtopic&topic=" . urlencode($topic->id));
} else {
_view("template_start", ["_title" => __("New topic")]);
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("form_newtopic");
_view("template_end");
}
} elseif ($_action === "lookupuser") {
RequestUtils::ensureRequestMethod("GET");
$userHandle = $_GET["handle"] ?? throw new Exception("Missing handle");
$user = new User();
$user->name = $userHandle;
if (!$db->fetchWhere($user, "name")) {
http_response_code(404);
Messaging::error(__("No user with name @%user_handle%", [ "user_handle" => $userHandle ]));
exit;
}
header("Location: ./?_action=viewuser&user=" . urlencode($user->id));
} elseif ($_action === "viewuser") {
$userId = $_GET["user"] ?? throw new Exception("Missing user id");
$user = new User();
$user->id = $userId;
if (!$db->fetch($user)) {
http_response_code(404);
Messaging::error(__("No user exists with this id"));
exit;
}
$lastNameChangeTooRecent = false;
$isOwnProfile = $user->id === $currentUser?->id;
if ($isOwnProfile && $user->nameLastChanged !== null) {
$diff = $user->nameLastChanged->diff(new DateTime());
$diffSeconds = (new DateTime())->setTimestamp(0)->add($diff)->getTimestamp();
$diffDays = $diffSeconds / 60.0 / 60.0 / 24.0 / 30.0;
$lastNameChangeTooRecent = $diffDays <= 30;
}
if (RequestUtils::isRequestMethod("POST")) {
$displayName = RequestUtils::getRequiredField("display_name");
$pfpAction = RequestUtils::getRequiredField("pfp_action");
$userName = $_POST["name"] ?? $user->name;
$user->displayName = $displayName;
$userName = strtolower($userName);
if ($userName !== $user->name) {
if ($lastNameChangeTooRecent) {
RequestUtils::triggerFormError(__("You can only change your username every 30 days!"));
} else {
if (!ValidationUtils::isUsernameValid($userName))
RequestUtils::triggerFormError(__("Invalid username!"));
if (!ValidationUtils::isUsernameAvailable($db, $userName))
RequestUtils::triggerFormError(__("This username is already taken!"));
$user->name = $userName;
$user->nameLastChanged = new DateTimeImmutable();
}
}
switch ($pfpAction) {
case "keep":
// Do nothing
break;
case "remove":
$user->profilePicture = null;
break;
case "replace": {
if (!isset($_FILES["pfp"]) || $_FILES["pfp"]["error"] !== UPLOAD_ERR_OK) {
RequestUtils::triggerFormError(__("Please upload an image to change your profile picture"));
}
$im = @imagecreatefromjpeg($_FILES["pfp"]["tmp_name"]);
if ($im === false)
$im = @imagecreatefrompng($_FILES["pfp"]["tmp_name"]);
if ($im === false)
RequestUtils::triggerFormError(__("Please upload a valid PNG or JPEG file"));
/** @var \GdImage $im */
$thumb = imagecreatetruecolor(64, 64);
imagecopyresampled($thumb, $im, 0, 0, 0, 0, 64, 64, imagesx($im), imagesy($im));
imagedestroy($im);
$stream = fopen("php://memory", "w+");
imagejpeg($thumb, $stream, 50);
rewind($stream);
imagedestroy($thumb);
$user->profilePicture = stream_get_contents($stream);
fclose($stream);
} break;
default:
RequestUtils::triggerFormError("Invalid value for pfp_action");
break;
}
if (!$db->update($user))
RequestUtils::triggerFormError(__("Failed to save changes", context: "Update profile"));
header("Location: $_SERVER[REQUEST_URI]");
} else {
$posts = $db->fetchCustom(Post::class, 'WHERE author_id = $1 ORDER BY post_date DESC', [ $userId ]);
$topics = [];
foreach ($posts as $post) {
if (isset($topics[$post->topicId]))
continue;
$topic = new Topic();
$topic->id = $post->topicId;
if (!$db->fetch($topic))
continue;
$topics[$post->topicId] = $topic;
}
_view("template_start", ["_title" => $user->displayName]);
_view("template_navigation_start");
_view("template_navigation", ["user" => $currentUser]);
_view("template_navigation_end");
_view("view_user", [
"user" => $user,
"posts" => $posts,
"topics" => $topics,
"lastNameChangeTooRecent" => $lastNameChangeTooRecent,
]);
_view("template_end");
}
} elseif ($_action === "attachment") {
if (!$currentUser) {
http_response_code(403);
Messaging::error(__("You must be logged in to view attachments"));
exit;
}
$attId = $_GET["attachment"] ?? throw new Exception("Missing attachment id");
$attachment = new Attachment();
$attachment->id = $attId;
if (!$db->fetch($attachment)) {
http_response_code(404);
Messaging::error(__("No attachment exists with this id"));
exit;
}
$name = preg_replace('/[\r\n\t\/]/', '_', $attachment->name);
$extension = pathinfo($attachment->name, PATHINFO_EXTENSION);
$mime = FileUtils::getMimeTypeForExtension($extension);
switch ($mime) {
case "text/html":
case "text/css":
case "text/javascript":
case "text/xml":
case "application/css":
case "application/javascript":
case "application/xml":
$mime = "text/plain";
break;
}
header("Content-Type: " . $mime);
header("Content-Length: " . strlen($attachment->contents));
header("Cache-Control: no-cache");
header("Content-Disposition: inline; filename=\"" . $name . "\"");
echo $attachment->contents;
} elseif ($_action === "profilepicture") {
$userId = $_GET["user"] ?? throw new Exception("Missing user id");
$user = new User();
$user->id = $userId;
if (!$db->fetch($user)) {
http_response_code(404);
Messaging::error(__("No user exists with this id"));
exit;
}
$ifNoneMatch = $_SERVER["HTTP_IF_NONE_MATCH"] ?? null;
if ($ifNoneMatch !== null)
$ifNoneMatch = trim($ifNoneMatch, '"');
if ($user->profilePicture === null) {
$fallback = __DIR__ . "/application/assets/user-fallback.jpg";
$etag = md5("\0");
header("Content-Type: image/jpeg");
header("Content-Length: " . filesize($fallback));
header("Cache-Control: no-cache");
header("ETag: \"" . $etag . "\"");
if ($ifNoneMatch === $etag)
http_response_code(304);
else
readfile($fallback);
} else {
$etag = md5($user->profilePicture);
header("Content-Type: image/jpeg");
header("Content-Length: " . strlen($user->profilePicture));
header("Cache-Control: no-cache");
header("ETag: \"" . $etag . "\"");
if ($ifNoneMatch === $etag)
http_response_code(304);
else
echo $user->profilePicture;
}
} elseif ($_action === "thumb") {
$attId = $_GET["attachment"] ?? throw new Exception("Missing attachment id");
$attachment = new Attachment();
$attachment->id = $attId;
if (!$db->fetch($attachment)) {
http_response_code(404);
Messaging::error(__("No attachment exists with this id"));
exit;
}
if (!str_starts_with($attachment->mimeType, "image/")) {
http_response_code(400);
Messaging::error(__("Attachment is not an image"));
exit;
}
$contentHash = hash("sha256", $attachment->contents);
$cacheId = bin2hex($attachment->id);
$cacheDir = sys_get_temp_dir() . "/mystic/forum/0/cache/thumbs/" . substr($cacheId, 0, 2) . "/" . substr($cacheId, 0, 8) . "/";
if (!is_dir($cacheDir))
mkdir($cacheDir, recursive: true);
$cacheFileData = $cacheDir . $cacheId . ".data";
$cacheFileInfo = $cacheDir . $cacheId . ".info";
if (is_file($cacheFileData) && is_file($cacheFileInfo)) {
$info = json_decode(file_get_contents($cacheFileInfo));
if ($info->contentHash === $contentHash) {
header("Content-Type: image/jpeg");
header("Cache-Control: max-age=86400");
header("X-Debug-Content: $cacheFileData");
readfile($cacheFileData);
exit;
}
}
$im = imagecreatefromstring($attachment->contents);
$w = imagesx($im);
$h = imagesy($im);
$r = $w / floatval($h);
if ($w > $h) {
$nw = THUMB_MAX_DIM;
$nh = floor($nw / $r);
} else {
$nh = THUMB_MAX_DIM;
$nw = floor($r * $nh);
}
$thumb = imagecreatetruecolor($nw, $nh);
imagecopyresampled($thumb, $im, 0, 0, 0, 0, $nw, $nh, $w, $h);
imagedestroy($im);
header("Content-Type: image/jpeg");
header("Cache-Control: max-age=86400");
imagejpeg($thumb, $cacheFileData, 40);
imagedestroy($thumb);
file_put_contents($cacheFileInfo, json_encode([
"format" => 1,
"contentHash" => $contentHash,
"created" => time(),
], JSON_UNESCAPED_SLASHES));
readfile($cacheFileData);
} elseif ($_action === "deletepost") {
RequestUtils::ensureRequestMethod("POST");
if (!$currentUser) {
http_response_code(403);
Messaging::error("You need to be logged in to delete posts!");
exit;
}
$postId = RequestUtils::getRequiredField("post");
$post = new Post();
$post->id = $postId;
if (!$db->fetch($post) || $post->deleted) {
http_response_code(404);
Messaging::error("No post exists with this id");
exit;
}
$topicAuthor = new User();
$topicAuthor->id = $post->authorId;
if (!$db->fetch($topicAuthor))
$topicAuthor = null;
$canEdit = ($currentUser->id === $topicAuthor?->id && $topicAuthor?->hasPermission(UserPermissions::DELETE_OWN_POST))
|| ($currentUser->hasPermission(UserPermissions::DELETE_OTHER_POST));
if (!$canEdit) {
http_response_code(403);
Messaging::error("You don't have permission to delete this post");
exit;
}
$attachments = $db->fetchCustom(Attachment::class, 'WHERE post_id = $1', [ $post->id ]);
$confirm = $_POST["confirm"] ?? null;
if ($confirm !== null) {
$expectedConfirm = base64_encode(hash("sha256", "confirm" . $post->id, true));
if ($confirm !== $expectedConfirm) {
http_response_code(400);
Messaging::error("Invalid confirmation");
exit;
}
$post->deleted = true;
$post->content = "";
if (!$db->update($post)) {
http_response_code(500);
Messaging::error("Failed to delete post");
exit;
}
foreach ($attachments as $attachment) {
if (!$db->delete($attachment)) {
http_response_code(500);
Messaging::error("Failed to delete attachment");
exit;
}
}
header("Location: ?_action=viewtopic&topic=" . urlencode($post->topicId));
} else {
_view("template_start", ["_title" => __("Delete post")]);
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("form_delete_post_confirm", [
"post" => $post,
"postAuthor" => $topicAuthor,
"attachments" => $attachments,
]);
_view("template_end");
}
} elseif ($_action === "updatepost") {
RequestUtils::ensureRequestMethod("POST");
if (!$currentUser) {
http_response_code(403);
Messaging::error("You need to be logged in to update posts!");
exit;
}
$postId = RequestUtils::getRequiredField("post");
$message = RequestUtils::getRequiredField("message");
$post = new Post();
$post->id = $postId;
if (!$db->fetch($post) || $post->deleted) {
http_response_code(404);
Messaging::error("No post exists with this id");
exit;
}
$topicAuthor = new User();
$topicAuthor->id = $post->authorId;
if (!$db->fetch($topicAuthor))
$topicAuthor = null;
$canEdit = ($currentUser->id === $topicAuthor?->id && $topicAuthor?->hasPermission(UserPermissions::EDIT_OWN_POST))
|| ($currentUser->hasPermission(UserPermissions::EDIT_OTHER_POST));
if (!$canEdit) {
http_response_code(403);
Messaging::error("You don't have permission to edit this post");
exit;
}
$confirm = $_POST["confirm"] ?? null;
$post->content = $message;
$post->edited = true;
if (!$db->update($post)) {
http_response_code(500);
Messaging::error("Failed to update post");
exit;
}
header("Location: ?_action=viewtopic&topic=" . urlencode($post->topicId) . "#post-" . urlencode($postId));
} elseif ($_action === "deletetopic") {
RequestUtils::ensureRequestMethod("POST");
if (!$currentUser) {
http_response_code(403);
Messaging::error("You need to be logged in to delete topics!");
exit;
}
$topicId = RequestUtils::getRequiredField("topic");
$topic = new Topic();
$topic->id = $topicId;
if (!$db->fetch($topic)) {
http_response_code(404);
Messaging::error("No topic exists with this id");
exit;
}
$topicAuthor = new User();
$topicAuthor->id = $topic->createdBy;
if (!$db->fetch($topicAuthor))
$topicAuthor = null;
$canEdit = ($currentUser->id === $topicAuthor?->id && $topicAuthor?->hasPermission(UserPermissions::DELETE_OWN_TOPIC))
|| ($currentUser->hasPermission(UserPermissions::DELETE_OTHER_TOPIC));
if (!$canEdit) {
http_response_code(403);
Messaging::error("You don't have permission to delete this topic");
exit;
}
$confirm = $_POST["confirm"] ?? null;
if ($confirm !== null) {
$expectedConfirm = base64_encode(hash("sha256", "confirm" . $topic->id, true));
if ($confirm !== $expectedConfirm) {
http_response_code(400);
Messaging::error("Invalid confirmation");
exit;
}
if (!$db->delete($topic)) {
http_response_code(500);
Messaging::error("Failed to delete topic");
exit;
}
header("Location: .");
} else {
_view("template_start", ["_title" => "Delete topic"]);
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("form_delete_topic_confirm", [
"topic" => $topic,
"topicAuthor" => $topicAuthor,
]);
_view("template_end");
}
} elseif ($_action === "updatetopic") {
RequestUtils::ensureRequestMethod("POST");
if (!$currentUser) {
http_response_code(403);
Messaging::error("You need to be logged in to update topics!");
exit;
}
$topicId = RequestUtils::getRequiredField("topic");
$title = RequestUtils::getRequiredField("title");
$topic = new Topic();
$topic->id = $topicId;
if (!$db->fetch($topic)) {
http_response_code(404);
Messaging::error("No topic exists with this id");
exit;
}
$topicAuthor = new User();
$topicAuthor->id = $topic->createdBy;
if (!$db->fetch($topicAuthor))
$topicAuthor = null;
$canEdit = ($currentUser->id === $topicAuthor?->id && $topicAuthor?->hasPermission(UserPermissions::EDIT_OWN_TOPIC))
|| ($currentUser->hasPermission(UserPermissions::EDIT_OTHER_TOPIC));
if (!$canEdit) {
http_response_code(403);
Messaging::error("You don't have permission to update this topic");
exit;
}
$topic->title = $title;
if (!$db->update($topic)) {
http_response_code(500);
Messaging::error("Failed to update topic");
exit;
}
header("Location: ./?_action=viewtopic&topic=" . urlencode($topicId));
} elseif ($_action === "captcha") {
$phrase = generateCaptchaText();
$builder = new CaptchaBuilder($phrase);
$builder->build(192, 48);
$_SESSION["captchaPhrase"] = $phrase;
header("Content-Type: image/jpeg");
header("Pragma: no-cache");
header("Cache-Control: no-cache");
$builder->save(null, 40);
} elseif ($_action === null) {
_view("template_start");
_view("template_navigation_start");
_view("template_navigation", ["user" => RequestUtils::getAuthorizedUser($db)]);
_view("template_navigation_end");
_view("view_topics", ["topics" => $db->fetchCustom(Topic::class, "ORDER BY creation_date DESC")]);
_view("template_end");
} else {
http_response_code(404);
Messaging::error("Invalid or unknown action $_action");
}