forked from GNUsocial/gnu-social
149 lines
4.7 KiB
PHP
149 lines
4.7 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010, StatusNet, Inc.
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*
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* Some utilities for generating hint data
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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class DiscoveryHints {
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static function fromXRD(XML_XRD $xrd)
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{
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$hints = array();
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if (Event::handle('StartDiscoveryHintsFromXRD', array($xrd, &$hints))) {
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foreach ($xrd->links as $link) {
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switch ($link->rel) {
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case WebFingerResource_Profile::PROFILEPAGE:
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$hints['profileurl'] = $link->href;
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break;
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case Salmon::REL_SALMON:
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case Salmon::NS_MENTIONS: // XXX: deprecated, remove in the future
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case Salmon::NS_REPLIES: // XXX: deprecated, remove in the future
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$hints['salmon'] = $link->href;
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break;
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case Discovery::UPDATESFROM:
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if (empty($link->type) || $link->type == 'application/atom+xml') {
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$hints['feedurl'] = $link->href;
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}
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break;
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case Discovery::HCARD:
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case Discovery::MF2_HCARD:
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$hints['hcard'] = $link->href;
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break;
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default:
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break;
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}
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}
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Event::handle('EndDiscoveryHintsFromXRD', array($xrd, &$hints));
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}
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return $hints;
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}
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static function fromHcardUrl($url)
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{
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$client = new HTTPClient();
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$client->setHeader('Accept', 'text/html,application/xhtml+xml');
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try {
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$response = $client->get($url);
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if (!$response->isOk()) {
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return null;
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}
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} catch (HTTP_Request2_Exception $e) {
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// Any HTTPClient error that might've been thrown
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common_log(LOG_ERR, __METHOD__ . ':'.$e->getMessage());
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return null;
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}
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return self::hcardHints($response->getBody(),
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$response->getEffectiveUrl());
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}
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static function hcardHints($body, $url)
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{
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$hcard = self::_hcard($body, $url);
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if (empty($hcard)) {
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return array();
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}
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$hints = array();
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// XXX: don't copy stuff into an array and then copy it again
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if (array_key_exists('nickname', $hcard) && !empty($hcard['nickname'][0])) {
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$hints['nickname'] = $hcard['nickname'][0];
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}
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if (array_key_exists('name', $hcard) && !empty($hcard['name'][0])) {
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$hints['fullname'] = $hcard['name'][0];
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}
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if (array_key_exists('photo', $hcard) && count($hcard['photo'])) {
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$hints['avatar'] = $hcard['photo'][0];
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}
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if (array_key_exists('note', $hcard) && !empty($hcard['note'][0])) {
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$hints['bio'] = $hcard['note'][0];
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}
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if (array_key_exists('adr', $hcard) && !empty($hcard['adr'][0])) {
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$hints['location'] = $hcard['adr'][0]['value'];
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}
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if (array_key_exists('url', $hcard) && !empty($hcard['url'][0])) {
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$hints['homepage'] = $hcard['url'][0];
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}
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return $hints;
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}
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static function _hcard($body, $url)
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{
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$mf2 = new Mf2\Parser($body, $url);
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$mf2 = $mf2->parse();
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if (empty($mf2['items'])) {
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return null;
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}
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$hcards = array();
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foreach ($mf2['items'] as $item) {
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if (!in_array('h-card', $item['type'])) {
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continue;
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}
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// We found a match, return it immediately
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if (isset($item['properties']['url']) && in_array($url, $item['properties']['url'])) {
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return $item['properties'];
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}
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// Let's keep all the hcards for later, to return one of them at least
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$hcards[] = $item['properties'];
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}
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// No match immediately for the url we expected, but there were h-cards found
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if (count($hcards) > 0) {
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return $hcards[0];
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}
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return null;
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}
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}
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