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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* Some utilities for generating hint data
*
* 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/>.
*/
class DiscoveryHints {
static function fromXRD($xrd)
{
$hints = array();
foreach ($xrd->links as $link) {
switch ($link['rel']) {
case Discovery::PROFILEPAGE:
$hints['profileurl'] = $link['href'];
break;
case Salmon::NS_REPLIES:
$hints['salmon'] = $link['href'];
break;
case Discovery::UPDATESFROM:
$hints['feedurl'] = $link['href'];
break;
case Discovery::HCARD:
$hints['hcardurl'] = $link['href'];
break;
default:
break;
}
}
return $hints;
}
static function fromHcardUrl($url)
{
$client = new HTTPClient();
$client->setHeader('Accept', 'text/html,application/xhtml+xml');
$response = $client->get($url);
if (!$response->isOk()) {
return null;
}
return self::hcardHints($response->getBody(),
$response->getUrl());
}
static function hcardHints($body, $url)
{
common_debug("starting tidy");
$body = self::_tidy($body);
common_debug("done with tidy");
set_include_path(get_include_path() . PATH_SEPARATOR . INSTALLDIR . '/plugins/OStatus/extlib/hkit/');
require_once('hkit.class.php');
$h = new hKit;
$hcards = $h->getByString('hcard', $body);
if (empty($hcards)) {
return array();
}
if (count($hcards) == 1) {
$hcard = $hcards[0];
} else {
foreach ($hcards as $try) {
if (array_key_exists('url', $try)) {
if (is_string($try['url']) && $try['url'] == $url) {
$hcard = $try;
break;
} else if (is_array($try['url'])) {
foreach ($try['url'] as $tryurl) {
if ($tryurl == $url) {
$hcard = $try;
break 2;
}
}
}
}
}
// last chance; grab the first one
if (empty($hcard)) {
$hcard = $hcards[0];
}
}
$hints = array();
if (array_key_exists('nickname', $hcard)) {
$hints['nickname'] = $hcard['nickname'];
}
if (array_key_exists('fn', $hcard)) {
$hints['fullname'] = $hcard['fn'];
} else if (array_key_exists('n', $hcard)) {
$hints['fullname'] = implode(' ', $hcard['n']);
}
if (array_key_exists('photo', $hcard)) {
$hints['avatar'] = $hcard['photo'];
}
if (array_key_exists('note', $hcard)) {
$hints['bio'] = $hcard['note'];
}
if (array_key_exists('adr', $hcard)) {
if (is_string($hcard['adr'])) {
$hints['location'] = $hcard['adr'];
} else if (is_array($hcard['adr'])) {
$hints['location'] = implode(' ', $hcard['adr']);
}
}
if (array_key_exists('url', $hcard)) {
if (is_string($hcard['url'])) {
$hints['homepage'] = $hcard['url'];
} else if (is_array($hcard['url'])) {
// HACK get the last one; that's how our hcards look
$hints['homepage'] = $hcard['url'][count($hcard['url'])-1];
}
}
return $hints;
}
private static function _tidy($body)
{
if (function_exists('tidy_parse_string')) {
common_debug("Tidying with extension");
$text = tidy_parse_string($body);
$text = tidy_clean_repair($text);
return $body;
} else if ($fullpath = self::_findProgram('tidy')) {
common_debug("Tidying with program $fullpath");
$tempfile = tempnam('/tmp', 'snht'); // statusnet hcard tidy
file_put_contents($tempfile, $source);
exec("$fullpath -utf8 -indent -asxhtml -numeric -bare -quiet $tempfile", $tidy);
unlink($tempfile);
return implode("\n", $tidy);
} else {
common_debug("Not tidying.");
return $body;
}
}
private static function _findProgram($name)
{
$path = $_ENV['PATH'];
$parts = explode(':', $path);
foreach ($parts as $part) {
$fullpath = $part . '/' . $name;
if (is_executable($fullpath)) {
return $fullpath;
}
}
return null;
}
}
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