5 * @link http://micropub.net/draft/
6 * @link http://indieweb.org/authorization-endpoint
10 public static $client_id = 'http://cweiske.de/shpub.htm';
12 public function __construct(Config $cfg)
17 public static function opts(\Console_CommandLine $optParser)
19 $cmd = $optParser->addCommand('connect');
20 $cmd->description = 'Obtain access token from a micropub server';
25 'long_name' => '--force-update',
26 'description' => 'Force token update if token already available',
27 'action' => 'StoreTrue',
35 'description' => 'Server URL',
42 'description' => 'User URL',
49 'description' => 'Short name (key)',
54 public function run($server, $user, $newKey, $force)
56 $server = Validator::url($server, 'server');
58 //indieweb: homepage is your identity
61 $user = Validator::url($user, 'user');
64 $host = $this->getHost($newKey != '' ? $newKey : $server, $force);
69 if ($host->endpoints->incomplete()) {
70 $host->server = $server;
71 $host->loadEndpoints();
74 list($redirect_uri, $socketStr) = $this->getHttpServerData();
77 "To authenticate, open the following URL:\n"
78 . $this->getBrowserAuthUrl($host, $user, $redirect_uri, $state)
81 $authParams = $this->startHttpServer($socketStr);
82 if ($authParams['state'] != $state) {
83 Log::err('Wrong "state" parameter value: ' . $authParams['state']);
86 $code = $authParams['code'];
87 $userUrl = $authParams['me'];
89 $accessToken = $this->fetchAccessToken(
90 $host, $userUrl, $code, $redirect_uri, $state
93 //all fine. update config
94 $host->user = $userUrl;
95 $host->token = $accessToken;
100 $hostKey = $this->cfg->getHostByName($server);
101 if ($hostKey === null) {
102 $keyBase = parse_url($host->server, PHP_URL_HOST);
105 while (isset($this->cfg->hosts[$newKey])) {
106 $newKey = $keyBase . ++$count;
111 $this->cfg->hosts[$hostKey] = $host;
113 Log::info("Server configuration $hostKey saved successfully.");
116 protected function fetchAccessToken(
117 $host, $userUrl, $code, $redirect_uri, $state
119 $req = new \HTTP_Request2($host->endpoints->token, 'POST');
120 if (version_compare(PHP_VERSION, '5.6.0', '<')) {
121 //correct ssl validation on php 5.5 is a pain, so disable
122 $req->setConfig('ssl_verify_host', false);
123 $req->setConfig('ssl_verify_peer', false);
125 $req->setHeader('Content-Type: application/x-www-form-urlencoded');
129 'grant_type' => 'authorization_code',
132 'redirect_uri' => $redirect_uri,
133 'client_id' => static::$client_id,
139 if (intval($res->getStatus() / 100) !== 2) {
140 Log::err('Failed to fetch access token');
141 Log::err('Server responded with HTTP status code ' . $res->getStatus());
142 Log::err($res->getBody());
145 if ($res->getHeader('content-type') == 'application/x-www-form-urlencoded') {
146 parse_str($res->getBody(), $tokenParams);
147 } elseif ($res->getHeader('content-type') == 'application/json') {
148 $tokenParams = json_decode($res->getBody(), true);
150 Log::err('Wrong content type in auth verification response');
153 if (!isset($tokenParams['access_token'])) {
154 Log::err('"access_token" missing');
158 $accessToken = $tokenParams['access_token'];
162 protected function getBrowserAuthUrl($host, $user, $redirect_uri, $state)
164 return $host->endpoints->authorization
165 . '?me=' . urlencode($user)
166 . '&client_id=' . urlencode(static::$client_id)
167 . '&redirect_uri=' . urlencode($redirect_uri)
170 . '&response_type=code';
173 protected function getHost($keyOrServer, $force)
175 $host = new Config_Host();
176 $key = $this->cfg->getHostByName($keyOrServer);
178 $host = $this->cfg->hosts[$key];
179 if (!$force && $host->token != '') {
180 Log::err('Token already available');
187 protected function getHttpServerData()
192 if (isset($_SERVER['SSH_CONNECTION'])) {
193 $parts = explode(' ', $_SERVER['SSH_CONNECTION']);
194 if (count($parts) >= 3) {
198 if (strpos($ip, ':') !== false) {
200 $ip = '[' . $ip . ']';
203 $redirect_uri = 'http://' . $ip . ':' . $port . '/callback';
204 $socketStr = 'tcp://' . $ip . ':' . $port;
205 return [$redirect_uri, $socketStr];
208 protected function startHttpServer($socketStr)
210 $responseOk = "HTTP/1.0 200 OK\r\n"
211 . "Content-Type: text/plain\r\n"
213 . "Ok. You may close this tab and return to the shell.\r\n";
214 $responseErr = "HTTP/1.0 400 Bad Request\r\n"
215 . "Content-Type: text/plain\r\n"
219 //5 minutes should be enough for the user to confirm
220 ini_set('default_socket_timeout', 60 * 5);
221 $server = stream_socket_server($socketStr, $errno, $errstr);
223 Log::err('Error starting HTTP server');
228 $sock = stream_socket_accept($server);
230 Log::err('Error accepting socket connection');
237 //read request headers
238 while (false !== ($line = trim(fgets($sock)))) {
242 $regex = '#^Content-Length:\s*([[:digit:]]+)\s*$#i';
243 if (preg_match($regex, $line, $matches)) {
244 $content_length = (int) $matches[1];
250 if ($content_length > 0) {
251 $body = fread($sock, $content_length);
255 list($method, $url, $httpver) = explode(' ', $headers[0]);
256 if ($method == 'GET') {
257 $parts = parse_url($url);
258 if (isset($parts['path']) && $parts['path'] == '/callback'
259 && isset($parts['query'])
261 parse_str($parts['query'], $query);
262 if (isset($query['code'])
263 && isset($query['state'])
264 && isset($query['me'])
266 fwrite($sock, $responseOk);
273 fwrite($sock, $responseErr);