hestiacp/web/add/key/index.php

<?php
use function Hestiacp\quoteshellarg\quoteshellarg;

ob_start();
session_start();
$TAB = "USER";

// Main include
include $_SERVER["DOCUMENT_ROOT"] . "/inc/main.php";

// Check POST request
if (!empty($_POST["ok"])) {
	// Check token
	verify_csrf($_POST);

	if (empty($_POST["v_key"])) {
		$_SESSION["error_msg"] = _("Field SSH_KEY can not be blank.");
	}

	if ($_SESSION["userContext"] === "admin" && !empty($_GET["user"])) {
		$user = quoteshellarg($_GET["user"]);
	}

	if (!$_SESSION["error_msg"]) {
		if ($_POST) {
			//key if key already exists
			exec(HESTIA_CMD . "v-list-user-ssh-key " . $user . " json", $output, $return_var);
			$data = json_decode(implode("", $output), true);
			unset($output);
			$keylist = [];
			$idlist = [];
			foreach ($data as $key => $value) {
				$idlist[] = trim($data[$key]["ID"]);
				$keylist[] = trim($data[$key]["KEY"]);
			}

			$v_key_parts = explode(" ", $_POST["v_key"]);
			$key_id = trim($v_key_parts[2]);
			if ($v_key_parts[2] == "") {
				$v_key_parts[2] = md5(time());
				$_POST["v_key"] .= " " . $v_key_parts[2];
			}

			//for deleting / revoking key the last part user@domain is used therefore needs to be unique
			//maybe consider adding random generated message or even an human read able string set by user?
			if (in_array($v_key_parts[2], $idlist)) {
				$_SESSION["error_msg"] = _("SSH KEY already exists");
			}
			if (in_array($v_key_parts[1], $keylist)) {
				$_SESSION["error_msg"] = _("SSH KEY already exists");
			}
			$v_key = quoteshellarg(trim($_POST["v_key"]));
		}
	}

	if (empty($_SESSION["error_msg"])) {
		exec(HESTIA_CMD . "v-add-user-ssh-key " . $user . " " . $v_key, $output, $return_var);
		check_return_code($return_var, $output);
	}
	unset($output);
	// Flush field values on success
	if (empty($_SESSION["error_msg"])) {
		$_SESSION["ok_msg"] = _("SSH KEY created");
	}
}
if (empty($v_key)) {
	$v_key = "";
}
render_page($user, $TAB, "add_key");

// Flush session messages
unset($_SESSION["error_msg"]);
unset($_SESSION["ok_msg"]);