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112 lines
3.2 KiB
112 lines
3.2 KiB
1 year ago
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<?php declare(strict_types = 0);
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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/**
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* A class for loading secrets from HashiCorp Vault secret manager.
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*/
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class CVaultHashiCorp extends CVault {
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public const TYPE = ZBX_VAULT_TYPE_HASHICORP;
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public const NAME = 'HashiCorp';
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public const API_ENDPOINT_DEFAULT = 'https://localhost:8200';
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public const DB_PATH_PLACEHOLDER = 'path/to/secret';
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/**
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* @var string
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*/
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private $api_endpoint;
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/**
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* @var string
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*/
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private $db_path;
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/**
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* @var string
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*/
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private $token;
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public function __construct(string $api_endpoint, string $db_path, string $token) {
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$this->api_endpoint = rtrim(trim($api_endpoint), '/');
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$this->db_path = trim($db_path);
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$this->token = trim($token);
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}
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public function validateParameters(): bool {
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if (parse_url($this->api_endpoint, PHP_URL_HOST) === null) {
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$this->addError(_s('Provided API endpoint "%1$s" is invalid.', $this->api_endpoint));
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}
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$secret_parser = new CVaultSecretParser(['provider' => ZBX_VAULT_TYPE_HASHICORP, 'with_key' => false]);
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if ($secret_parser->parse($this->db_path) != CParser::PARSE_SUCCESS) {
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$this->addError(_s('Provided secret path "%1$s" is invalid.', $this->db_path));
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}
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if ($this->token === '') {
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$this->addError(_s('Provided authentication token "%1$s" is empty.', $this->token));
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}
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return !$this->getErrors();
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}
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public function getCredentials(): ?array {
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$path_parts = explode('/', $this->db_path);
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array_splice($path_parts, 1, 0, 'data');
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$url = $this->api_endpoint.'/v1/'.implode('/', $path_parts);
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$secret = @file_get_contents($url, false, stream_context_create([
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'http' => [
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'method' => 'GET',
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'header' => "X-Vault-Token: $this->token\r\n",
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'ignore_errors' => true
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]
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]));
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if ($secret === false) {
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$this->addError(_('Vault connection failed.'));
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return null;
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}
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$secret = $secret ? json_decode($secret, true) : null;
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if ($secret === null || !isset($secret['data']['data']) || !is_array($secret['data']['data'])) {
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$this->addError(_('Unable to load database credentials from Vault.'));
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return null;
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}
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$db_credentials = $secret['data']['data'];
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if (!array_key_exists('username', $db_credentials) || !array_key_exists('password', $db_credentials)) {
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$this->addError(_('Username and password must be stored in Vault secret keys "username" and "password".'));
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return null;
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}
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return [
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'user' => $db_credentials['username'],
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'password' => $db_credentials['password']
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];
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}
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}
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