mirror of https://github.com/tildeclub/site.git
Update signup-handler.php
This commit is contained in:
deepend-tildeclub
GitHub
parent
b47dbaec0c
commit
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@ -1,20 +1,59 @@
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<?php
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$filepath = __FILE__;
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require __DIR__.'/../vendor/autoload.php';
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require_once "email/smtp.php";
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function forbidden_name($name) {
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return in_array($name, [
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function getUserIpAddr() {
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if(!empty($_SERVER['HTTP_CLIENT_IP'])) {
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//ip from share internet
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$ip = $_SERVER['HTTP_CLIENT_IP'];
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} elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
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//ip pass from proxy
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$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
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} else {
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$ip = $_SERVER['REMOTE_ADDR'];
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}
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return $ip;
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}
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function add_ban_info($name, $email): void
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{
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$user_ip = getUserIpAddr();
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$user_info = "$name - $email - $user_ip";
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file_put_contents("/var/signups_banned", $user_info.PHP_EOL, FILE_APPEND);
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}
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function is_ssh_pubkey($string): bool
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{
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// list from sshd(8)
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$valid_pubkeys = [
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'sk-ecdsa-sha2-nistp256@openssh.com',
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'ecdsa-sha2-nistp256',
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'ecdsa-sha2-nistp384',
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'ecdsa-sha2-nistp521',
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'sk-ssh-ed25519@openssh.com',
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'ssh-ed25519',
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'ssh-dss',
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'ssh-rsa',
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];
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foreach ($valid_pubkeys as $pub)
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if (str_starts_with($string, $pub)) return true;
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return false;
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}
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function forbidden_name($name): bool
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{
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$badnames = [
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'0x0',
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'abuse',
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'adam',
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'admin',
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'administrator',
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'amcclure',
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'anton',
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'auth',
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'autoconfig',
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'bbj',
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'broadcasthost',
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'chickfilla',
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'cloud',
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'forum',
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'ftp',
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@ -30,7 +69,6 @@ function forbidden_name($name) {
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'localdomain',
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'localhost',
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'lounge',
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'lukewarmcat',
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'mail',
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'mailer-daemon',
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'marketing',
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@ -60,32 +98,58 @@ function forbidden_name($name) {
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'wpad',
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'www',
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'znc',
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]);
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];
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return in_array(
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$name,
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array_merge(
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$badnames,
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file("/var/signups_current", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES),
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file("/var/banned_names.txt", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES)
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)
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);
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}
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function forbidden_email($email): bool
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{
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$femail = file("/var/banned_emails.txt", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
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return in_array($email, $femail);
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}
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function forbidden_sshkey($sshkey): bool
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{
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$fsshkey = file("/var/banned_sshkeys.txt", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
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$fsk = [];
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foreach ($fsshkey as $line) {
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$fsk_line = explode(' ',trim($line));
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$fsk[] = $fsk_line[1];
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}
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$sk = explode(' ',trim($sshkey));
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return in_array($sk[1], $fsk);
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}
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$message = "";
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if (isset($_REQUEST["username"]) && isset($_REQUEST["email"])) {
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// Check the name.
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$name = trim($_REQUEST["username"]);
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if ($name == "")
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$message .= "<li>please fill in your desired username</li>";
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$message .= "<li>fill in your desired username</li>\n";
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else {
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if (strlen($name) < 2)
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$message .= "<li>username is too short (2 character min)</li>\n";
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if (strlen($name) > 32)
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$message .= "<li>username too long (32 character max)</li>";
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if (strlen($name) > 32)
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$message .= "<li>username too long (32 character max)</li>\n";
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if (!preg_match('/^[a-z][a-z0-9]{1,31}$/', $name))
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$message .= "<li>username contains invalid characters (lowercase ascii only, must start with a letter)</li>";
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if (strlen($name) > 1 && !preg_match('/^[a-z][a-z0-9]{1,31}$/', $name))
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$message .= "<li>username contains invalid characters (lowercase only, must start with a letter).</li>\n";
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if ($_REQUEST["sshkey"] == "" || mb_substr($_REQUEST["sshkey"], 0, 4) !== "ssh-")
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$message .= '<li>ssh key required: please create one and submit the public key. '
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. 'see our <a href="https://tilde.club/wiki/ssh.html">ssh wiki</a> or '
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. 'hop on <a href="https://web.tilde.chat/?join=club">irc</a> and ask for help</li>';
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if ($_REQUEST["interest"] == "")
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$message .= "<li>please explain why you're interested so we can make sure you're a real human being</li>";
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if (posix_getpwnam($name) || forbidden_name($name))
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$message .= "<li>sorry, the username $name is unavailable</li>";
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if (posix_getpwnam($name) || forbidden_name($name))
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$message .= "<li>sorry, the username $name is unavailable</li>\n";
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}
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// Check the e-mail address.
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$email = trim($_REQUEST["email"]);
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@ -97,13 +161,35 @@ if (isset($_REQUEST["username"]) && isset($_REQUEST["email"])) {
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$message .= "<li>invalid email address: " . htmlspecialchars($result["error"]) . "</li>";
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elseif ($result["email"] != $email)
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$message .= "<li>invalid email address. did you mean: " . htmlspecialchars($result["email"]) . "</li>";
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elseif ($name != "" && forbidden_email($email)) {
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$message .= "<li>your email is banned!</li><br />";
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add_ban_info($name, $email);
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}
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}
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if ($_REQUEST["interest"] == "")
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$message .= "<li>please explain why you're interested so we can make sure you're a real human being</li>";
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$sshkey = trim($_REQUEST["sshkey"]);
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if ($sshkey == "" || !is_ssh_pubkey($sshkey))
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$message .= '<li>ssh key required: please create one and submit the public key. '
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. 'see our <a href="https://tilde.club/wiki/ssh">ssh wiki</a> or '
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. 'hop on <a href="https://web.newnet.net/?join=club">irc</a> and ask for help</li>';
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else {
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if ($name != "" && $email != "") {
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if (forbidden_sshkey($sshkey)) {
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$message .= "<li>your sshkey is banned!</li>\n";
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add_ban_info($name, $email);
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}
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}
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}
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// no validation errors
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if ($message == "") {
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$sshkey = trim($_REQUEST["sshkey"]);
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$makeuser = "makeuser {$_REQUEST["username"]} {$_REQUEST["email"]} \"{$sshkey}\"";
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if ($message == "") {
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$makeuser = "makeuser {$_REQUEST["username"]} {$_REQUEST["email"]} \"$sshkey\"";
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$msgbody = "
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username: {$_REQUEST["username"]}
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email: {$_REQUEST["email"]}
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@ -112,25 +198,28 @@ reason: {$_REQUEST["interest"]}
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$makeuser
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";
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if (mail('root', 'new tilde.club signup', $msgbody)) {
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if (mail('sudoers', 'new tilde.club signup', $msgbody)) {
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echo '<div class="alert alert-success" role="alert">
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email sent! we\'ll get back to you soon (usually within a day) with login instructions! be sure to check your spam folder as we\'ve had several reports of being marked as spam! <a href="/">back to tilde.club home</a>
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</div>';
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email sent! we\'ll get back to you soon (usually within a day) with login instructions! <a href="/">back to tilde.club home</a>
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</div>';
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// temp. add to forbidden to prevent double signups (cleanup after user creation)
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file_put_contents("/var/signups_current", $name.PHP_EOL, FILE_APPEND);
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file_put_contents("/var/signups", $makeuser.PHP_EOL, FILE_APPEND);
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// clear form fields
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$_REQUEST["email"] = $_REQUEST["username"] = $_REQUEST["sshkey"] = $_REQUEST["interest"] = "";
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} else {
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echo '<div class="alert alert-danger" role="alert">
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something went wrong... please send an email to <a href="mailto:root@tilde.club">root@tilde.club</a> with details of what happened
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</div>';
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something went wrong... please send an email to <a href="mailto:root@tilde.club">root@tilde.club</a> with details of what happened
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</div>';
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}
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} else {
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?>
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?>
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<div class="alert alert-warning" role="alert">
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<strong>please correct the following errors: </strong>
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<strong>notice: </strong>
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<?=$message?>
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</div>
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<?php
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<?php
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}
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}
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?>
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