/dev/null; printf %d $?'", $blank, $ret); if ($ret == 0) { if (!file_exists("/var/tmp/register/" . sanitize($_POST['username']))) $username = sanitize($_POST['username']); else $username_err = "A request for the username " . $_POST['username'] . " exists already. Try again later or choose a different username."; } else $username_err = "Username is already in use"; unset($ret); } else { $username_err = "Invalid username. Username must be a valid GNU/Linux username (match $username_re)"; } } else { $username_err = "Username is required"; } if (!empty($_POST['password0'] || !empty($_POST['password1']))) { if ($_POST['password1'] === $_POST['password0']) { $password0 = $_POST['password0']; $password1 = $_POST['password1']; } else { $password0_err = $password1_err = "Passwords do not match"; } } else { $password0_err = $password1_err = "Password is required"; } if (!empty($_POST['email'])) { if (filter_var(sanitize($_POST['email']), FILTER_VALIDATE_EMAIL)) { $email = sanitize($_POST['email']); } else { $email_err = "Invalid E-mail"; } } else { $email_err = "E-mail is required"; } if (!empty($_POST['ssh'])) { $ret = shell_exec("bash -c 'ssh-keygen -lf - <<< " . escapeshellarg($_POST['ssh']) . " &> /dev/null ; printf %d $?'"); if ($ret == 0) { $ssh = $_POST['ssh']; } else { $ssh_err = "Not a valid SSH public key"; } unset($ret); } else { $ssh_err = "Public key is required"; } if (!empty($_POST['joinreason'])) { $reason = $_POST['joinreason']; } else { $reason_err = "Join reason is required"; } if (empty($username_err . $password0_err . $password1_err . $email_err . $ssh_err . $reason_err)) $success = true; } if (!$success) { ?>

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"; $message = "Hello Administrators,\nSomeone has requested a membership. Please view the details below and decide if it is worth approving.\n\nSSH keys:\n$ssh\n\nRequested username: $username\nRequested services: Tilde"; if ($use_matrix) $message .= ", Matrix"; if ($use_fedi) $message .= ", Mastodon"; if ($use_git) $message .= ", Gitea"; if ($use_jitsi) $message .= ", Jitsi"; if ($use_xmpp) $message .= ", XMPP"; if ($use_nextcloud) $message .= ", Nextcloud"; $message .= ".\nJoin reason:\n$reason\n\n\nTo accept this request, run this command as root:\n/root/bin/accept $username\nTo deny this request, run this command as root:\n/root/bin/deny $username\n"; $contents = "#!/usr/bin/env -S bash -e\n\n# This is the registration script for $username \n# This script was automatically generated by http://" . $_SERVER['HTTP_HOST'] . htmlspecialchars($_SERVER['PHP_SELF']). "\n\n"; $contents .= "~/bin/mktuser " . escapeshellarg($username) . ' ' . escapeshellarg($password0) . " <<< " . escapeshellarg($_POST['ssh']) . "\n\n"; if ($use_matrix) $contents .= "~/bin/mkmuser " . escapeshellarg($username) . ' ' . escapeshellarg($password0) . "\n"; if ($use_fedi) $contents .= "~/bin/mkfuser " . escapeshellarg($username) . ' ' . escapeshellarg($email) . "\n"; if ($use_git) $contents .= "~/bin/mkguser " . escapeshellarg($username) . ' ' . escapeshellarg($password0) . ' ' . escapeshellarg($email) . "\n"; if ($use_jitsi) $contents .= "~/bin/mkxuser " . escapeshellarg($username) . ' ' . escapeshellarg($password0) . " jitsi.vern.cc\n"; if ($use_xmpp) $contents .= "~/bin/mkxuser " . escapeshellarg($username) . ' ' . escapeshellarg($password0) . " vern.cc\n"; // if ($use_nextcloud) $contents .= "~/bin/mknuser " . escapeshellarg($username) . "\n"; $contents .= "s-nail -vr 'register@vern.cc' -c cobra@vern.cc -c neopenk@vern.cc -c aryak@vern.cc -s 'Your ~vern account has been created' -M text/plain " . escapeshellarg($email) . " < <(printf 'Hello %s,\\nYour membership request on ~vern has been accepted.\\nYou can now SSH into vern.cc using the public key(s) that you supplied to ~vern.\\n\\nThank you for being a part of ~vern!' " . escapeshellarg($username) . ")\n"; $contents .= "rm -f $0\n"; $filename = "/var/tmp/register/" . $username; $handle = fopen($filename, "w+"); chmod($filename, 0600); unset($filename); fwrite($handle, $contents); fclose($handle); $from = "register@vern.cc"; $headers = "From: " . $from . "\n"; $headers .= "MIME-Version: 1.0\n"; $headers .= "Content-type: text/plain\n"; $headers .= "Cc: Aleksandar \n"; $headers .= "Cc: Arya \n"; $headers .= "Cc: Neo \n"; mail($to, $subject, $message, $headers); } ?>