Commit 9f83e60f authored by mmn's avatar mmn

Merge branch 'pings-interop' into 'master'

Clean up Linkback plugin and add Webmention support

Closes #82

Fixes Pingback, adds Webmention, makes linkbacks opt-out-able for users (at request of quitter.se admin)

See merge request !36
parents 96e0867d dc36621d
......@@ -65,9 +65,27 @@ class LinkbackPlugin extends Plugin
// notice content
$c = $notice->content;
$this->notice = $notice;
// Ignoring results
common_replace_urls_callback($c,
array($this, 'linkbackUrl'));
if(!$notice->getProfile()->
getPref("linkbackplugin", "disable_linkbacks")
) {
// Ignoring results
common_replace_urls_callback($c,
array($this, 'linkbackUrl'));
}
if($notice->isRepeat()) {
$repeat = Notice::getByID($notice->repeat_of);
$this->linkbackUrl($repeat->getUrl());
} else if(!empty($notice->reply_to)) {
$parent = $notice->getParent();
$this->linkbackUrl($parent->getUrl());
}
$replyProfiles = Profile::multiGet('id', $notice->getReplies());
foreach($replyProfiles->fetchAll('profileurl') as $profileurl) {
$this->linkbackUrl($profileurl);
}
}
return true;
}
......@@ -95,32 +113,89 @@ class LinkbackPlugin extends Plugin
return $orig;
}
$pb = null;
$tb = null;
// XXX: Should handle relative-URI resolution in these detections
if (array_key_exists('X-Pingback', $result->headers)) {
$pb = $result->headers['X-Pingback'];
} else if (preg_match('/<link rel="pingback" href="([^"]+)" ?\/?>/',
$result->body,
$match)) {
$pb = $match[1];
}
if (!empty($pb)) {
$this->pingback($result->final_url, $pb);
$wm = $this->getWebmention($result);
if(!empty($wm)) {
// It is the webmention receiver's job to resolve source
// Ref: https://github.com/converspace/webmention/issues/43
$this->webmention($url, $wm);
} else {
$tb = $this->getTrackback($result->body, $result->final_url);
if (!empty($tb)) {
$this->trackback($result->final_url, $tb);
$pb = $this->getPingback($result);
if (!empty($pb)) {
// Pingback still looks for exact URL in our source, so we
// must send what we have
$this->pingback($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'];
} else if(preg_match('/<(?:link|a)[ ]+href="([^"]+)"[ ]+rel="[^" ]* ?pingback ?[^" ]*"[ ]*\/?>/i', $result->body, $match)
|| preg_match('/<(?:link|a)[ ]+rel="[^" ]* ?pingback ?[^" ]*"[ ]+href="([^"]+)"[ ]*\/?>/i', $result->body, $match)) {
return $match[1];
}
}
function pingback($url, $endpoint)
{
$args = array($this->notice->uri, $url);
$args = array($this->notice->getUrl(), $url);
if (!extension_loaded('xmlrpc')) {
if (!dl('xmlrpc.so')) {
......@@ -131,9 +206,10 @@ class LinkbackPlugin extends Plugin
$request = HTTPClient::start();
try {
$request->setBody(xmlrpc_encode_request('pingback.ping', $args));
$response = $request->post($endpoint,
array('Content-Type: text/xml'),
xmlrpc_encode_request('pingback.ping', $args));
false);
$response = xmlrpc_decode($response->getBody());
if (xmlrpc_is_fault($response)) {
common_log(LOG_WARNING,
......@@ -153,8 +229,11 @@ class LinkbackPlugin extends Plugin
// Largely cadged from trackback_cls.php by
// Ran Aroussi <ran@blogish.org>, GPL2 or any later version
// http://phptrackback.sourceforge.net/
function getTrackback($text, $url)
function getTrackback($result)
{
$text = $result->body;
$url = $result->final_url;
if (preg_match_all('/(<rdf:RDF.*?<\/rdf:RDF>)/sm', $text, $match, PREG_SET_ORDER)) {
for ($i = 0; $i < count($match); $i++) {
if (preg_match('|dc:identifier="' . preg_quote($url) . '"|ms', $match[$i][1])) {
......@@ -246,4 +325,23 @@ class LinkbackPlugin extends Plugin
'or <a href="http://www.movabletype.org/docs/mttrackback.html">Trackback</a> protocols.'));
return true;
}
public function onStartInitializeRouter(URLMapper $m)
{
$m->connect('settings/linkback', array('action' => 'linkbacksettings'));
return true;
}
function onEndAccountSettingsNav($action)
{
$action_name = $action->trimmed('action');
$action->menuItem(common_local_url('linkbacksettings'),
// TRANS: OpenID plugin menu item on user settings page.
_m('MENU', 'Send Linkbacks'),
// TRANS: OpenID plugin tooltip for user settings menu item.
_m('Opt-out of sending linkbacks.'),
$action_name === 'linkbacksettings');
return true;
}
}
<?php
/**
* Settings for Linkback
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Settings
* @package StatusNet
* @author Stephen Paul Weber <singpolyma@singpolyma.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
*/
if (!defined('GNUSOCIAL')) { exit(1); }
/**
* Settings for Linkback
*
* Lets users opt out of sending linkbacks
*
* @category Settings
* @author Stephen Paul Weber <singpolyma@singpolyma.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
*/
class LinkbacksettingsAction extends SettingsAction
{
/**
* Title of the page
*
* @return string Page title
*/
function title()
{
// TRANS: Title of Linkback settings page for a user.
return _m('TITLE','Linkback settings');
}
/**
* Instructions for use
*
* @return string Instructions for use
*/
function getInstructions()
{
// TRANS: Form instructions for Linkback settings.
return _m('Linkbacks inform post authors when you link to them. ' .
'You can disable this feature here.');
}
function showContent()
{
$this->elementStart('form', array('method' => 'post',
'class' => 'form_settings',
'action' =>
common_local_url('linkbacksettings')));
$this->hidden('token', common_session_token());
$this->elementStart('fieldset');
$this->element('legend', null, _m('LEGEND','Preferences'));
$this->checkbox('disable_linkbacks', "Opt out of sending linkbacks for URLs you post", $this->scoped->getPref("linkbackplugin", "disable_linkbacks"));
// TRANS: Button text to save OpenID prefs
$this->submit('settings_linkback_prefs_save', _m('BUTTON','Save'), 'submit', 'save_prefs');
$this->elementEnd('fieldset');
$this->elementEnd('form');
}
/**
* Handle a POST request
*
* @return void
*/
protected function doPost()
{
$x = $this->scoped->setPref("linkbackplugin", "disable_linkbacks", $this->boolean('disable_linkbacks'));
return _m('Linkback preferences saved.');
}
}
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