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 $cmd->description = 'Obtain access token from a micropub server';
25 'long_name' => '--force-update',
26 'description' => 'Force token update if token already available',
27 'action' => 'StoreTrue',
35 'long_name' => '--scope',
36 'description' => 'Space-separated list of scopes to request (default create)',
37 'action' => 'StoreString',
38 'default' => 'create',
45 'description' => 'Server URL',
52 'description' => 'User URL',
59 'description' => 'Short name (key)',
64 public function run($server, $user, $newKey, $force, $scope)
66 $server = Validator::url($server, 'server');
68 //indieweb: homepage is your identity
71 $user = Validator::url($user, 'user');
74 $host = $this->getHost($newKey != '' ? $newKey : $server, $force);
79 if ($host->endpoints->incomplete()) {
80 $host->server = $server;
81 $host->loadEndpoints();
84 list($redirect_uri, $socketStr) = $this->getHttpServerData();
87 "To authenticate, open the following URL:\n"
88 . $this->getBrowserAuthUrl($host, $user, $redirect_uri, $state, $scope)
91 $authParams = $this->startHttpServer($socketStr);
92 if ($authParams['state'] != $state) {
93 Log::err('Wrong "state" parameter value: ' . $authParams['state']);
96 $code = $authParams['code'];
97 $userUrl = $authParams['me'];
99 $accessToken = $this->fetchAccessToken(
100 $host, $userUrl, $code, $redirect_uri, $state
103 //all fine. update config
104 $host->user = $userUrl;
105 $host->token = $accessToken;
110 $hostKey = $this->cfg->getHostByName($server);
111 if ($hostKey === null) {
112 $keyBase = parse_url($host->server, PHP_URL_HOST);
115 while (isset($this->cfg->hosts[$newKey])) {
116 $newKey = $keyBase . ++$count;
121 $this->cfg->hosts[$hostKey] = $host;
123 Log::info("Server configuration $hostKey saved successfully.");
126 protected function fetchAccessToken(
127 $host, $userUrl, $code, $redirect_uri, $state
129 $req = new \HTTP_Request2($host->endpoints->token, 'POST');
130 if (version_compare(PHP_VERSION, '5.6.0', '<')) {
131 //correct ssl validation on php 5.5 is a pain, so disable
132 $req->setConfig('ssl_verify_host', false);
133 $req->setConfig('ssl_verify_peer', false);
135 $req->setHeader('Content-Type: application/x-www-form-urlencoded');
139 'grant_type' => 'authorization_code',
142 'redirect_uri' => $redirect_uri,
143 'client_id' => static::$client_id,
149 if (intval($res->getStatus() / 100) !== 2) {
150 Log::err('Failed to fetch access token');
151 Log::err('Server responded with HTTP status code ' . $res->getStatus());
152 Log::err($res->getBody());
155 if ($res->getHeader('content-type') == 'application/x-www-form-urlencoded') {
156 parse_str($res->getBody(), $tokenParams);
157 } elseif ($res->getHeader('content-type') == 'application/json') {
158 $tokenParams = json_decode($res->getBody(), true);
160 Log::err('Wrong content type in auth verification response');
163 if (!isset($tokenParams['access_token'])) {
164 Log::err('"access_token" missing');
168 $accessToken = $tokenParams['access_token'];
172 protected function getBrowserAuthUrl($host, $user, $redirect_uri, $state, $scope)
174 return $host->endpoints->authorization
175 . '?me=' . urlencode($user)
176 . '&client_id=' . urlencode(static::$client_id)
177 . '&redirect_uri=' . urlencode($redirect_uri)
179 . '&scope=' . urlencode($scope)
180 . '&response_type=code';
183 protected function getHost($keyOrServer, $force)
185 $host = new Config_Host();
186 $key = $this->cfg->getHostByName($keyOrServer);
188 $host = $this->cfg->hosts[$key];
189 if (!$force && $host->token != '') {
190 Log::err('Token already available');
197 protected function getHttpServerData()
202 if (isset($_SERVER['SSH_CONNECTION'])) {
203 $parts = explode(' ', $_SERVER['SSH_CONNECTION']);
204 if (count($parts) >= 3) {
208 if (strpos($ip, ':') !== false) {
210 $ip = '[' . $ip . ']';
213 $redirect_uri = 'http://' . $ip . ':' . $port . '/callback';
214 $socketStr = 'tcp://' . $ip . ':' . $port;
215 return [$redirect_uri, $socketStr];
218 protected function startHttpServer($socketStr)
220 $responseOk = "HTTP/1.0 200 OK\r\n"
221 . "Content-Type: text/plain\r\n"
223 . "Ok. You may close this tab and return to the shell.\r\n";
224 $responseErr = "HTTP/1.0 400 Bad Request\r\n"
225 . "Content-Type: text/plain\r\n"
229 //5 minutes should be enough for the user to confirm
230 ini_set('default_socket_timeout', 60 * 5);
231 $server = stream_socket_server($socketStr, $errno, $errstr);
233 Log::err('Error starting HTTP server');
238 $sock = stream_socket_accept($server);
240 Log::err('Error accepting socket connection');
247 //read request headers
248 while (false !== ($line = trim(fgets($sock)))) {
252 $regex = '#^Content-Length:\s*([[:digit:]]+)\s*$#i';
253 if (preg_match($regex, $line, $matches)) {
254 $content_length = (int) $matches[1];
260 if ($content_length > 0) {
261 $body = fread($sock, $content_length);
265 list($method, $url, $httpver) = explode(' ', $headers[0]);
266 if ($method == 'GET') {
267 $parts = parse_url($url);
268 if (isset($parts['path']) && $parts['path'] == '/callback'
269 && isset($parts['query'])
271 parse_str($parts['query'], $query);
272 if (isset($query['code'])
273 && isset($query['state'])
274 && isset($query['me'])
276 fwrite($sock, $responseOk);
283 fwrite($sock, $responseErr);