GNUsocial/gnu-social
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Add webmention support

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This commit is contained in:
Stephen Paul Weber 2015-10-14 16:13:58 -05:00
parent e4892d21b1
commit 3b1792c8b5
1 changed files with 58 additions and 6 deletions
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64
plugins/Linkback/LinkbackPlugin.php
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@ -103,21 +103,73 @@ class LinkbackPlugin extends Plugin
return $orig;
}
$pb = $this->getPingback($result);
if (!empty($pb)) {
$this->pingback($result->final_url, $pb);
// XXX: Should handle relative-URI resolution in these detections
$wm = $this->getWebmention($result);
if(!empty($wm)) {
$this->webmention($result->final_url, $wm);
} else {
$tb = $this->getTrackback($result);
if (!empty($tb)) {
$this->trackback($result->final_url, $tb);
$pb = $this->getPingback($result);
if (!empty($pb)) {
$this->pingback($result->final_url, $pb);
} else {
$tb = $this->getTrackback($result);
if (!empty($tb)) {
$this->trackback($result->final_url, $tb);
}
}
}
return $orig;
}
// Based on https://github.com/indieweb/mention-client-php
// which is licensed Apache 2.0
function getWebmention($result) {
// XXX: the fetcher only gives back one of each header, so this may fail on multiple Link headers
if(preg_match('~<((?:https?://)?[^>]+)>; rel="webmention"~', $result->headers['Link'], $match)) {
return $match[1];
} elseif(preg_match('~<((?:https?://)?[^>]+)>; rel="http://webmention.org/?"~', $result->headers['Link'], $match)) {
return $match[1];
}
if(preg_match('/<(?:link|a)[ ]+href="([^"]+)"[ ]+rel="[^" ]* ?webmention ?[^" ]*"[ ]*\/?>/i', $result->body, $match)
|| preg_match('/<(?:link|a)[ ]+rel="[^" ]* ?webmention ?[^" ]*"[ ]+href="([^"]+)"[ ]*\/?>/i', $result->body, $match)) {
return $match[1];
} elseif(preg_match('/<(?:link|a)[ ]+href="([^"]+)"[ ]+rel="http:\/\/webmention\.org\/?"[ ]*\/?>/i', $result->body, $match)
|| preg_match('/<(?:link|a)[ ]+rel="http:\/\/webmention\.org\/?"[ ]+href="([^"]+)"[ ]*\/?>/i', $result->body, $match)) {
return $match[1];
}
}
function webmention($url, $endpoint) {
$source = $this->notice->getUrl();
$payload = array(
'source' => $source,
'target' => $url
);
$request = HTTPClient::start();
try {
$response = $request->post($endpoint,
array(
'Content-type: application/x-www-form-urlencoded',
'Accept: application/json'
),
$payload
);
if(!in_array($response->getStatus(), array(200,202))) {
common_log(LOG_WARNING,
"Webmention request failed for '$url' ($endpoint)");
}
} catch (HTTP_Request2_Exception $e) {
common_log(LOG_WARNING,
"Webmention request failed for '$url' ($endpoint)");
}
}
function getPingback($result) {
if (array_key_exists('X-Pingback', $result->headers)) {
return $result->headers['X-Pingback'];