web-base/core/Api/Request.class.php

189 lines
6.0 KiB
PHP

<?php
namespace Api;
use Objects\User;
class Request {
protected User $user;
protected array $params;
protected string $lastError;
protected array $result;
protected bool $success;
protected bool $isPublic;
protected bool $loginRequired;
protected bool $variableParamCount;
protected bool $isDisabled;
protected bool $apiKeyAllowed;
protected array $requiredGroup;
protected bool $csrfTokenRequired;
private array $aDefaultParams;
private array $allowedMethods;
private bool $externalCall;
public function __construct(User $user, bool $externalCall = false, array $params = array()) {
$this->user = $user;
$this->aDefaultParams = $params;
$this->success = false;
$this->result = array();
$this->externalCall = $externalCall;
$this->isPublic = true;
$this->isDisabled = false;
$this->loginRequired = false;
$this->variableParamCount = false;
$this->apiKeyAllowed = true;
$this->allowedMethods = array("GET", "POST");
$this->requiredGroup = array();
$this->lastError = "";
$this->csrfTokenRequired = true;
}
protected function forbidMethod($method) {
if (($key = array_search($method, $this->allowedMethods)) !== false) {
unset($this->allowedMethods[$key]);
}
}
public function parseParams($values) {
foreach($this->params as $name => $param) {
$value = $values[$name] ?? NULL;
$isEmpty = (is_string($value) || is_array($value)) && empty($value);
if(!$param->optional && (is_null($value) || $isEmpty)) {
$this->lastError = 'Missing parameter: ' . $name;
return false;
}
if(!is_null($value) && !$isEmpty) {
if(!$param->parseParam($value)) {
$value = print_r($value, true);
$this->lastError = "Invalid Type for parameter: $name '$value' (Required: " . $param->getTypeName() . ")";
return false;
}
}
}
return true;
}
public function parseVariableParams($values) {
foreach($values as $name => $value) {
if(isset($this->params[$name])) continue;
$type = Parameter\Parameter::parseType($value);
$param = new Parameter\Parameter($name, $type, true);
$param->parseParam($value);
$this->params[$name] = $param;
}
}
public function execute($values = array()) {
$this->params = $this->aDefaultParams;
$this->success = false;
$this->result = array();
$this->lastError = '';
if($this->user->isLoggedIn()) {
$this->result['logoutIn'] = $this->user->getSession()->getExpiresSeconds();
}
if($this->externalCall) {
$values = $_REQUEST;
if($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_SERVER["CONTENT_TYPE"]) && in_array("application/json", explode(";", $_SERVER["CONTENT_TYPE"]))) {
$jsonData = json_decode(file_get_contents('php://input'), true);
if ($jsonData) {
$values = array_merge($values, $jsonData);
} else {
$this->lastError = 'Invalid request body.';
header('HTTP 1.1 400 Bad Request');
return false;
}
}
}
if($this->isDisabled) {
$this->lastError = "This function is currently disabled.";
return false;
}
if($this->externalCall && !$this->isPublic) {
$this->lastError = 'This function is private.';
header('HTTP 1.1 403 Forbidden');
return false;
}
if(!in_array($_SERVER['REQUEST_METHOD'], $this->allowedMethods)) {
$this->lastError = 'This method is not allowed';
header('HTTP 1.1 405 Method Not Allowed');
return false;
}
// TODO: Check this!
if($this->externalCall && ($this->loginRequired || !empty($this->requiredGroup))) {
$apiKeyAuthorized = false;
if(isset($values['api_key']) && $this->apiKeyAllowed) {
$apiKey = $values['api_key'];
$apiKeyAuthorized = $this->user->authorize($apiKey);
}
if(!$this->user->isLoggedIn() && !$apiKeyAuthorized) {
$this->lastError = 'You are not logged in.';
header('HTTP 1.1 401 Unauthorized');
return false;
} else if(!empty($this->requiredGroup) && empty(array_intersect($this->requiredGroup, array_keys($this->user->getGroups())))) {
$this->lastError = "Insufficient permissions. Required group: "
. implode(", ", array_map(function ($group) { return GroupName($group); }, $this->requiredGroup));
header('HTTP 1.1 401 Unauthorized');
return false;
} else if($this->csrfTokenRequired && !$apiKeyAuthorized && $this->externalCall) {
// csrf token required + external call
// if it's not a call with API_KEY, check for csrf_token
if (!isset($values["csrf_token"]) || strcmp($values["csrf_token"], $this->user->getSession()->getCsrfToken()) !== 0) {
$this->lastError = "CSRF-Token mismatch";
header('HTTP 1.1 403 Forbidden');
return false;
}
}
}
if(!$this->parseParams($values))
return false;
if($this->variableParamCount)
$this->parseVariableParams($values);
if(!$this->user->getSQL()->isConnected()) {
$this->lastError = $this->user->getSQL()->getLastError();
return false;
}
$this->user->getSQL()->setLastError('');
$this->success = true;
return true;
}
protected function createError($err) {
$this->success = false;
$this->lastError = $err;
return false;
}
protected function getParam($name) {
return isset($this->params[$name]) ? $this->params[$name]->value : NULL;
}
public function isPublic() { return $this->isPublic; }
public function getLastError() { return $this->lastError; }
public function getResult() { return $this->result; }
public function success() { return $this->success; }
public function loginRequired() { return $this->loginRequired; }
public function isExternalCall() { return $this->externalCall; }
public function getJsonResult() {
$this->result['success'] = $this->success;
$this->result['msg'] = $this->lastError;
return json_encode($this->result);
}
}