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- <?php namespace Lib;
- /**
- * Defines an unexpected response.
- *
- * @author Joachim M. Giaever (joachim[]giaever.org)
- * @package curl
- * @version 0.1
- */
- class HTTPUnexpectedResponse extends \Exception {
- /**
- * Includes valid codes, as a valid code can also be unexpeted.
- *
- * @var array $ecode HTTP status codes
- * @static
- */
- static $ecode = array(
- 0 => "Unknown error",
- 100 => 'Continue',
- 101 => 'Switching Protocols',
- 102 => 'Processing', // WebDAV; RFC 2518
- 200 => 'OK',
- 201 => 'Created',
- 202 => 'Accepted',
- 203 => 'Non-Authoritative Information', // since HTTP/1.1
- 204 => 'No Content',
- 205 => 'Reset Content',
- 206 => 'Partial Content',
- 207 => 'Multi-Status', // WebDAV; RFC 4918
- 208 => 'Already Reported', // WebDAV; RFC 5842
- 226 => 'IM Used', // RFC 3229
- 300 => 'Multiple Choices',
- 301 => 'Moved Permanently',
- 302 => 'Found',
- 303 => 'See Other', // since HTTP/1.1
- 304 => 'Not Modified',
- 305 => 'Use Proxy', // since HTTP/1.1
- 306 => 'Switch Proxy',
- 307 => 'Temporary Redirect', // since HTTP/1.1
- 308 => 'Permanent Redirect', // approved as experimental RFC
- 400 => 'Bad Request',
- 401 => 'Unauthorized',
- 402 => 'Payment Required',
- 403 => 'Forbidden',
- 404 => 'Not Found',
- 405 => 'Method Not Allowed',
- 406 => 'Not Acceptable',
- 407 => 'Proxy Authentication Required',
- 408 => 'Request Timeout',
- 409 => 'Conflict',
- 410 => 'Gone',
- 411 => 'Length Required',
- 412 => 'Precondition Failed',
- 413 => 'Request Entity Too Large',
- 414 => 'Request-URI Too Long',
- 415 => 'Unsupported Media Type',
- 416 => 'Requested Range Not Satisfiable',
- 417 => 'Expectation Failed',
- 418 => 'I\'m a teapot', // RFC 2324
- 419 => 'Authentication Timeout', // not in RFC 2616
- 420 => 'Enhance Your Calm', // Twitter
- 420 => 'Method Failure', // Spring Framework
- 422 => 'Unprocessable Entity', // WebDAV; RFC 4918
- 423 => 'Locked', // WebDAV; RFC 4918
- 424 => 'Failed Dependency', // WebDAV; RFC 4918
- 424 => 'Method Failure', // WebDAV)
- 425 => 'Unordered Collection', // Internet draft
- 426 => 'Upgrade Required', // RFC 2817
- 428 => 'Precondition Required', // RFC 6585
- 429 => 'Too Many Requests', // RFC 6585
- 431 => 'Request Header Fields Too Large', // RFC 6585
- 444 => 'No Response', // Nginx
- 449 => 'Retry With', // Microsoft
- 450 => 'Blocked by Windows Parental Controls', // Microsoft
- 451 => 'Redirect', // Microsoft
- 451 => 'Unavailable For Legal Reasons', // Internet draft
- 494 => 'Request Header Too Large', // Nginx
- 495 => 'Cert Error', // Nginx
- 496 => 'No Cert', // Nginx
- 497 => 'HTTP to HTTPS', // Nginx
- 499 => 'Client Closed Request', // Nginx
- 500 => 'Internal Server Error',
- 501 => 'Not Implemented',
- 502 => 'Bad Gateway',
- 503 => 'Service Unavailable',
- 504 => 'Gateway Timeout',
- 505 => 'HTTP Version Not Supported',
- 506 => 'Variant Also Negotiates', // RFC 2295
- 507 => 'Insufficient Storage', // WebDAV; RFC 4918
- 508 => 'Loop Detected', // WebDAV; RFC 5842
- 509 => 'Bandwidth Limit Exceeded', // Apache bw/limited extension
- 510 => 'Not Extended', // RFC 2774
- 511 => 'Network Authentication Required', // RFC 6585
- 598 => 'Network read timeout error', // Unknown
- 599 => 'Network connect timeout error', // Unknown
- );
- /**
- * The response from server (body)
- * @access private
- */
- private $response;
- /**
- * Sets the exceptions.
- *
- * @string $message - the response from the server.
- * @string $code - the HTTP status code.
- * @exception $prev - Previous exceptions
- **/
- public function __construct(string $message, int $code = 0, Exception $previous = null) {
- $this->response = $message;
- parent::__construct(HTTPUnexpectedResponse::$ecode[$code], $code, $previous);
- }
- /**
- * Visual representation of the exception.
- *
- * @return string
- */
- public function __toString() {
- return __CLASS__ . ": [{$this->code} | {$this->message}]: {$this->response}\n";
- }
- /**
- * Get the actual response from the body or the request.
- *
- * @return string
- */
- public function getResponse() {
- return $this->response;
- }
- }
- /**
- * When the request fails because of an unauthorized token,
- * this is thrown instead.
- *
- * @author Joachim M. Giaever (joachim[]giaever.org)
- * @package curl
- * @version 0.1
- */
- class NotAuthorizedException extends HTTPUnexpectedResponse {
- /**
- * Sets the exceptions.
- *
- * @string $message - the response from the server.
- * @string $code - the HTTP status code, @default 401
- * @exception $prev - Previous exceptions
- **/
- public function __construct($message, $code = 401, Exception $previous = null) {
- parent::__construct($message, $code, $previous);
- }
- }
- /**
- * A trait used for every class referencing the api-url and token.
- *
- * @author Joachim M. Giaever (joachim[]giaever.org)
- * @package curl
- * @version 0.1
- */
- trait Curl {
- protected $url;
- protected $token;
- // TODO: Change this to something!
- protected $user_agent = "Gogs PHP Api Client/0.1 (compatible; LINUX)";
- protected $timeout = 30;
- protected $max_redirects = 4;
- /**
- * array_2_params takes an array and converts it into a
- * query string (e.g param=val¶m2=val2).
- *
- * @param array $params parameters to pass
- * @return string
- */
- private function array_2_params(array $params) {
- return join("&", array_map(function($k, $v) {
- return sprintf("%s=%s", $k, rawurlencode(is_bool($v) ? ($v ? "true" : "false") : $v ));
- }, array_keys($params), $params));
- }
- /**
- * array_2_json takes an array and converts it into a
- * json-string (e.g {'name': 'This'}) which is typically
- * used in a request body.
- *
- * @param array $params paramters to pass
- * @return string
- */
- private function array_2_json(array $params) {
- return count($params) == 0 ? null : json_encode($params);
- }
- /**
- * Initializes a curl request of different kinds, depending
- * on the specified method. This can be
- *
- * DELETE, PATCH, POST or GET. An unidentified value will
- * become a GET-request.
- *
- * @param string $method either DELETE, PATCH, POST, GET
- * @param string &$req variable to store request body in
- * @param string $scope scope within the API (e.g /user/repos)
- * @param array $params parameters to pass
- * @param bool $ret return transfer
- * @return int the status code
- */
- protected function method(string $method, string &$req, string $scope, array $params, bool $ret) {
- $c = curl_init();
- if (!$c) {
- return false;
- }
- $headers = array(
- sprintf("Authorization: token %s", $this->token),
- );
- $url = sprintf("%s%s", $this->url, $scope);
- echo sprintf("%s: %s, params: %s\n", $method, $url, $this->array_2_json($params));
- if (in_array($method, array("DELETE", "PATCH", "POST"))) {
- $json = $this->array_2_json($params);
- curl_setopt($c, CURLOPT_CUSTOMREQUEST, $method);
- curl_setopt($c, CURLOPT_POSTFIELDS, $json);
- array_unshift($headers, "Content-Type: application/json");
- array_push($headers, "Content-Length: " . strlen($json));
- } else {
- $url .= "?" . $this->array_2_params($params);
- }
- curl_setopt($c, CURLOPT_USERAGENT, $this->user_agent);
- curl_setopt($c, CURLOPT_URL, $url);
- curl_setopt($c, CURLOPT_HTTPHEADER, $headers);
- curl_setopt($c, CURLOPT_RETURNTRANSFER, $ret);
- curl_setopt($c, CURLOPT_TIMEOUT, $this->timeout);
- curl_setopt($c, CURLOPT_MAXREDIRS, $this->max_redirects);
- curl_setopt($c, CURLOPT_FOLLOWLOCATION, true);
- $req = curl_exec($c);
- $status_code = curl_getinfo($c, CURLINFO_HTTP_CODE);
- curl_close($c);
- return $status_code;
- }
- /**
- * Checks if the user is authorized for the scope. Shouldn't
- * be used frequently. One test for one scope should be enough,
- * but if you know for sure thats you're programming with the
- * use of an authorized user you should leave this and just
- * handle the NotAuthorizedExeption whenever thrown.
- *
- * @param $scope the scope, a relative uri.
- * @throws Not AuthorizedException if server responde with a 401
- * @return bool
- */
- protected function authorized(string $scope = "") {
- $ret = "";
- if ($this->method("GET", $ret, $scope, array(), false) == 401) {
- throw new NotAuthorizedException("Not authorized", 401);
- }
- return true;
- }
- /**
- * Post method.
- *
- * @param string $scope the scope, a relative uri.
- * @param array $params the parameters to post.
- * @throws NotAuthorizedException on 401, 403
- * @throws HTTPUnexpectedResponse when not 200,201,401,403
- * @return string the request content.
- */
- private function post(string $scope = "", array $params = array()) {
- $req = "";
- $code = $this->method("POST", $req, $scope, $params, true);
- switch ($code) {
- case 200:
- case 201:
- return $req;
- case 401:
- case 403:
- throw new NotAuthorizedException($req, $code);
- default:
- throw new HTTPUnexpectedResponse($req, $code);
- }
- }
- /**
- * Delete method.
- *
- * @param string $scope the scope, a relative uri.
- * @throws NotAuthorizedException on 401, 403
- * @throws HTTPUnexpectedResponse when not 200,204,401,403
- * @return string the request content.
- */
- private function delete(string $scope = "") {
- $req = "";
- $code = $this->method("DELETE", $req, $scope, array(), true);
- switch ($code) {
- case 200:
- case 204:
- return $req;
- case 401:
- case 403:
- throw new NotAuthorizedException($req, $code);
- default:
- throw new HTTPUnexpectedResponse($req, $code);
- }
- }
- /**
- * GET method.
- *
- * @param string $scope the scope, a relative uri.
- * @param array $params the parameters to post.
- * @throws NotAuthorizedException on 401, 403
- * @throws HTTPUnexpectedResponse when not 200,401,403
- * @return string the request content.
- */
- private function get($scope = "", $params = array()) {
- $req = "";
- $code = $this->method("GET", $req, $scope, $params, true);
- switch ($code) {
- case 200:
- return $req;
- case 401:
- case 403:
- throw new NotAuthorizedException($req, $code);
- default:
- throw new HTTPUnexpectedResponse($req, $code);
- }
- }
- }
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