diff options
| -rw-r--r-- | data/config.php.dist | 10 | ||||
| -rw-r--r-- | src/phinde/Subscriptions.php | 12 | ||||
| -rw-r--r-- | www/push-subscription.php | 104 |
3 files changed, 125 insertions, 1 deletions
diff --git a/data/config.php.dist b/data/config.php.dist index 4c6a14f..7eb8ccf 100644 --- a/data/config.php.dist +++ b/data/config.php.dist @@ -4,6 +4,14 @@ $GLOBALS['phinde'] = array( 'domains' => array( 'www.example.org', 'test.example.org' - ) + ), + //list of URL beginnings that should be ignored + 'blacklist' => array( + 'http://bad.example.org/' + ), + //list of URLs that should be subscribed to with PubSubHubbub + 'subscriptions' => array( + 'http://www.example.org/feed', + ), ); ?>
\ No newline at end of file diff --git a/src/phinde/Subscriptions.php b/src/phinde/Subscriptions.php new file mode 100644 index 0000000..9db4b16 --- /dev/null +++ b/src/phinde/Subscriptions.php @@ -0,0 +1,12 @@ +<?php +namespace phinde; + +class Subscriptions +{ + public function get($url) + { + //FIXME + return false; + } +} +?> diff --git a/www/push-subscription.php b/www/push-subscription.php new file mode 100644 index 0000000..014f15d --- /dev/null +++ b/www/push-subscription.php @@ -0,0 +1,104 @@ +<?php +namespace phinde; +/** + * Handles PuSH subscription responses + */ +header('HTTP/1.0 500 Internal Server Error'); +require 'www-header.php'; + +//PHP converts dots to underscore, so hub.mode becomes hub_mode +if (!isset($_GET['hub_mode'])) { + header('HTTP/1.0 400 Bad Request'); + echo "Parameter missing: hub.mode\n"; + exit(1); +} +$hubMode = $_GET['hub_mode']; + +if (!isset($_GET['hub_topic'])) { + header('HTTP/1.0 400 Bad Request'); + echo "Parameter missing: hub.topic\n"; + exit(1); +} +if (!isValidUrl($_GET['hub_topic'])) { + header('HTTP/1.0 400 Bad Request'); + echo "Invalid parameter value for hub.topic: Invalid URL\n"; + exit(1); +} +$hubTopic = $_GET['hub_topic']; + +$subDb = new Subscriptions(); + +if ($hubMode == 'denied') { + //TODO: Inspect Location header to retry subscription + //TODO: remove subscription + return; +} else if ($hubMode == 'subscribe') { + //FIXME + $pos = array_search($hubTopic, $GLOBALS['phinde']['subscriptions']); + if ($pos === false) { + //we do not want to subscribe + header('HTTP/1.0 404 Not Found'); + echo "We are not interested in this hub.topic\n"; + exit(1); + } + if (!isset($_GET['hub_challenge'])) { + header('HTTP/1.0 400 Bad Request'); + echo "Parameter missing: hub.challenge\n"; + exit(1); + } + $hubChallenge = $_GET['hub_challenge']; + + if (!isset($_GET['hub_lease_seconds'])) { + header('HTTP/1.0 400 Bad Request'); + echo "Parameter missing: hub.lease_seconds\n"; + exit(1); + } + $hubLeaseSeconds = $_GET['hub_lease_seconds']; + + //FIXME: store in database + + header('HTTP/1.0 200 OK'); + header('Content-type: text/plain'); + echo $hubChallenge; + exit(0); + +} else if ($hubMode == 'unsubscribe') { + $sub = $subDb->get($hubTopic); + if ($sub === false) { + //we do not know this subscription + header('HTTP/1.0 404 Not Found'); + echo "We are not subscribed to this hub.topic\n"; + exit(1); + } + $pos = array_search($hubTopic, $GLOBALS['phinde']['subscriptions']); + if ($pos !== false) { + //we do not want to unsubscribe + header('HTTP/1.0 404 Not Found'); + echo "We do not want to unsubscribe from this hub.topic\n"; + exit(1); + } + $sub->remove($hubTopic); + header('HTTP/1.0 200 OK'); + header('Content-type: text/plain'); + echo "Unsubscribed.\n"; + exit(0); +} else { + header('HTTP/1.0 400 Bad Request'); + echo "Invalid parameter value for hub.mode\n"; + exit(1); +} + + +function isValidUrl($url) +{ + if (filter_var($url, FILTER_VALIDATE_URL) === false) { + return false; + } + if (substr($url, 0, 7) == 'http://' + || substr($url, 0, 8) == 'https://' + ) { + return true; + } + return false; +} +?>
\ No newline at end of file |