call postnotice when there's a remote subscription

darcs-hash:20080606160437-84dde-25d2db21e059159751a27fd77f47764346029dd8.gz

actions/postnotice.php

@@ -19,9 +19,77 @@
 
 if (!defined('LACONICA')) { exit(1); }
 
+require_once(INSTALLDIR.'/lib/omb.php');
+require_once('Auth/Yadis/Yadis.php');
+
 class PostnoticeAction extends Action {
 	function handle($args) {
 		parent::handle($args);
-		common_server_error(_t('Not yet implemented.'));
+		try {
+			$req = OAuthRequest::from_request();
+			# Note: server-to-server function!
+			$server = omb_oauth_server();
+			list($consumer, $token) = $server->verify_request($req);
+			if ($this->save_notice($req, $consumer, $token)) {
+				print "omb_version=".OMB_VERSION_01;
+			}
+		} catch (OAuthException $e) {
+			common_server_error($e->getMessage());
+			return;
+		}
+	}
+	
+	function save_notice(&$req, &$consumer, &$token) {
+		$version = $req->get_parameter('omb_version');
+		if ($version != OMB_VERSION_01) {
+			common_user_error(_t('Unsupported OMB version'), 400);
+			return false;
+		}
+		# First, check to see
+		$listenee =  $req->get_parameter('omb_listenee');
+		$remote_profile = Remote_profile::staticGet('uri', $listenee);
+		if (!$remote_profile) {
+			common_user_error(_t('Profile unknown'), 403);
+			return false;
+		}
+		$sub = Subscription::staticGet('token', $token->key);
+		if (!$sub) {
+			common_user_error(_t('No such subscription'), 403);
+			return false;
+		}
+		$content = $req->get_parameter('omb_notice_content');
+		if (!$content || strlen($content) > 140) {
+			common_user_error(_t('Invalid notice content'), 400);
+			return false;
+		}
+		$notice_uri = $req->get_parameter('omb_notice');
+		if (!Validate::uri($notice_uri) &&
+			!common_valid_tag($notice_uri)) {
+			common_user_error(_t('Invalid notice uri'), 400);
+			return false;
+		}
+		$notice_url = $req->get_parameter('omb_notice_url');
+		if ($notice_url && !common_valid_http_url($notice_url)) {
+			common_user_error(_t('Invalid notice url'), 400);
+			return false;
+		}
+		$notice = Notice::staticGet('uri', $notice_uri);
+		if (!$notice) {
+			$notice = new Notice();
+			$notice->profile_id = $remote_profile->id;
+			$notice->uri = $notice->uri;
+			$notice->content = $content;
+			if ($notice_url) {
+				$notice->url = $notice_url;
+			}
+			$notice->created = DB_DataObject_Cast::dateTime(); # current time
+			$id = $notice->insert();
+			if (!$id) {
+				common_server_error(_t('Error inserting notice'), 500);
+				return false;
+			}
+			common_broadcast_notice($notice, true);
+		}
+		return true;
 	}
 }

lib/util.php

@@ -21,8 +21,21 @@
 
 # Show a server error
 
-function common_server_error($msg) {
+function common_server_error($msg, $code=500) {
-	header('HTTP/1.1 500 Server Error');
+	static $status = array(500 => 'Internal Server Error',
+						   501 => 'Not Implemented',
+						   502 => 'Bad Gateway',
+						   503 => 'Service Unavailable',
+						   504 => 'Gateway Timeout',
+						   505 => 'HTTP Version Not Supported');
+
+	if (!array_key_exists($code, $status)) {
+		$code = 500;
+	}
+
+	$status_string = $status[$code];
+
+	header('HTTP/1.1 '.$code.' '.$status_string);
 	header('Content-type: text/plain');
 
 	print $msg;
@@ -31,7 +44,34 @@ function common_server_error($msg) {
 }
 
 # Show a user error
-function common_user_error($msg, $code=200) {
+function common_user_error($msg, $code=400) {
+	static $status = array(400 => 'Bad Request',
+						   401 => 'Unauthorized',
+						   402 => 'Payment Required',
+						   403 => 'Forbidden',
+						   404 => 'Not Found',
+						   405 => 'Method Not Allowed',
+						   406 => 'Not Acceptable',
+						   407 => 'Proxy Authentication Required',
+						   408 => 'Request Timeout',
+						   409 => 'Conflict',
+						   410 => 'Gone',
+						   411 => 'Length Required',
+						   412 => 'Precondition Failed',
+						   413 => 'Request Entity Too Large',
+						   414 => 'Request-URI Too Long',
+						   415 => 'Unsupported Media Type',
+						   416 => 'Requested Range Not Satisfiable',
+						   417 => 'Expectation Failed');
+
+	if (!array_key_exists($code, $status)) {
+		$code = 400;
+	}
+
+	$status_string = $status[$code];
+
+	header('HTTP/1.1 '.$code.' '.$status_string);
+
 	common_show_header('Error');
 	common_element('div', array('class' => 'error'), $msg);
 	common_show_footer();
@@ -486,15 +526,78 @@ function common_redirect($url, $code=307) {
 	common_element('a', array('href' => $url), $url);
 }
 
-function common_broadcast_notice($notice) {
+function common_broadcast_notice($notice, $remote=false) {
-	// XXX: broadcast notices to remote subscribers
+	// XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
-	// XXX: broadcast notices to SMS
+	if (!$remote) {
+		common_broadcast_remote_subscribers($notice);
+	}
 	// XXX: broadcast notices to Jabber
+	// XXX: broadcast notices to SMS
 	// XXX: broadcast notices to other IM
-	// XXX: use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
 	return true;
 }
 
+function common_broadcast_remote_subscribers($notice) {
+	# First, get remote users subscribed to this profile
+	$sub = new Subscription();
+	$sub->subscribed = $notice->profile_id;
+	$rp = new Remote_profile();
+	$sub->addJoin($rp, 'INNER', NULL, 'subscriber');
+	if ($sub->find()) {
+		$posted = array();
+		while ($sub->fetch()) {
+			if (!$posted[$rp->postnoticeurl]) {
+				if (common_post_notice($notice, $rp, $sub)) {
+					$posted[$rp->postnoticeurl] = TRUE;
+				}
+			}
+		}
+	}
+}
+
+function common_post_notice($notice, $remote_profile, $subscription) {
+	global $config; # for license URL
+	$user = User::staticGet('id', $notice->profile_id);
+	$con = omb_oauth_consumer();
+	$token = new OAuthToken($subscription->token, $subscription->secret);
+	$url = $remote_profile->postnoticeurl;
+	$parsed = parse_url($url);
+	$params = array();
+	parse_str($parsed['query'], $params);
+	$req = OAuthRequest::from_consumer_and_token($con, $token,
+												 "POST", $url, $params);
+	$req->set_parameter('omb_version', OMB_VERSION_01);
+	$req->set_parameter('omb_listenee', $user->uri);
+	$req->set_parameter('omb_notice', $notice->uri);
+	$req->set_parameter('omb_notice_content', $notice->content);
+	$req->set_parameter('omb_notice_url', common_local_url('shownotice',
+														   array('notice' =>
+																 $notice->id)));
+	$req->set_parameter('omb_notice_license', $config['license']['url']);
+	$req->sign_request(omb_hmac_sha1(), $con, $tok);
+
+	# We re-use this tool's fetcher, since it's pretty good
+
+	$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
+
+	$result = $fetcher->post($req->get_normalized_http_url(),
+							 $req->to_postdata());
+
+	if ($result->status == 403) { # not authorized, don't send again
+		$subscription->delete();
+		return false;
+	} else if ($result->status != 200) {
+		return false;
+	} else { # success!
+		parse_str($result->body, $return);
+		if ($return['omb_version'] == OMB_VERSION_01) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+}
+
 function common_profile_url($nickname) {
 	return common_local_url('showstream', array('nickname' => $nickname));
 }