Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
require_once('Scrape.php');
function follow_post(&$a) {
if(! local_user()) {
notice( t('Permission denied.') . EOL);
goaway($_SESSION['return_url']);
// NOTREACHED
}
$url = $orig_url = notags(trim($_POST['url']));
$diaspora = false;
$email_conversant = false;
if($url) {
$links = lrdd($url);
if(count($links)) {
foreach($links as $link) {
if($link['@attributes']['rel'] === NAMESPACE_DFRN)
$dfrn = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'salmon')
$notify = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === NAMESPACE_FEED)
$poll = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
$hcard = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
$profile = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location')
$diaspora = true;
}
// Status.Net can have more than one profile URL. We need to match the profile URL
// to a contact on incoming messages to prevent spam, and we won't know which one
// to match. So in case of two, one of them is stored as an alias. Only store URL's
// and not webfinger user@host aliases. If they've got more than two non-email style
// aliases, let's hope we're lucky and get one that matches the feed author-uri because
// otherwise we're screwed.
foreach($links as $link) {
if($link['@attributes']['rel'] === 'alias') {
if(strpos($link['@attributes']['href'],'@') === false) {
if(isset($profile)) {
if($link['@attributes']['href'] !== $profile)
$alias = unamp($link['@attributes']['href']);
}
else
$profile = unamp($link['@attributes']['href']);
}
}
}
}
else {
if((strpos($orig_url,'@')) && validate_email($orig_url)) {
$email_conversant = true;
}
}
}
// If we find a DFRN site, send our subscriber to the other person's
// dfrn_request page and all the other details will get sorted.
if(strlen($dfrn)) {
$ret = scrape_dfrn($dfrn);
if(is_array($ret) && x($ret,'dfrn-request')) {
if(strlen($a->path))
$myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
else
$myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
goaway($ret['dfrn-request'] . "&addr=$myaddr");
// NOTREACHED
}
}
$network = 'stat';
$priority = 0;
if($hcard) {
$vcard = scrape_vcard($hcard);
// Google doesn't use absolute url in profile photos
if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
$h = @parse_url($hcard);
if($h)
$vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
}
logger('mod_follow: scrape_vcard: ' . print_r($vcard,true), LOGGER_DATA);
}
if(! $profile) {
if($diaspora)
$profile = $hcard;
else
$profile = $url;
}
if(! x($vcard,'fn'))
if(x($vcard,'nick'))
$vcard['fn'] = $vcard['nick'];
if((! isset($vcard)) && (! $poll)) {
$ret = scrape_feed($url);
logger('mod_follow: scrape_feed returns: ' . print_r($ret,true), LOGGER_DATA);
if(count($ret) && ($ret['feed_atom'] || $ret['feed_rss'])) {
$poll = ((x($ret,'feed_atom')) ? unamp($ret['feed_atom']) : unamp($ret['feed_rss']));
$vcard = array();
if(x($ret,'photo'))
$vcard['photo'] = $ret['photo'];
require_once('simplepie/simplepie.inc');
$feed = new SimplePie();
$xml = fetch_url($poll);
$feed->set_raw_data($xml);
$feed->init();
if(! x($vcard,'photo'))
$vcard['photo'] = $feed->get_image_url();
$author = $feed->get_author();
if($author) {
$vcard['fn'] = unxmlify(trim($author->get_name()));
if(! $vcard['fn'])
$vcard['fn'] = trim(unxmlify($author->get_email()));
if(strpos($vcard['fn'],'@') !== false)
$vcard['fn'] = substr($vcard['fn'],0,strpos($vcard['fn'],'@'));
$vcard['nick'] = strtolower(notags(unxmlify($vcard['fn'])));
if(strpos($vcard['nick'],' '))
$vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
$email = unxmlify($author->get_email());
}
else {
$item = $feed->get_item(0);
if($item) {
$author = $item->get_author();
if($author) {
$vcard['fn'] = trim(unxmlify($author->get_name()));
if(! $vcard['fn'])
$vcard['fn'] = trim(unxmlify($author->get_email()));
if(strpos($vcard['fn'],'@') !== false)
$vcard['fn'] = substr($vcard['fn'],0,strpos($vcard['fn'],'@'));
$vcard['nick'] = strtolower(unxmlify($vcard['fn']));
if(strpos($vcard['nick'],' '))
$vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
$email = unxmlify($author->get_email());
}
if(! $vcard['photo']) {
$rawmedia = $item->get_item_tags('http://search.yahoo.com/mrss/','thumbnail');
if($rawmedia && $rawmedia[0]['attribs']['']['url'])
$vcard['photo'] = unxmlify($rawmedia[0]['attribs']['']['url']);
}
}
}
if((! $vcard['photo']) && strlen($email))
$vcard['photo'] = gravatar_img($email);
if($poll === $profile)
$lnk = $feed->get_permalink();
if(isset($lnk) && strlen($lnk))
$profile = $lnk;
if(! (x($vcard,'fn')))
$vcard['fn'] = notags($feed->get_title());
if(! (x($vcard,'fn')))
$vcard['fn'] = notags($feed->get_description());
$network = 'feed';
$priority = 2;
}
}
logger('follow: poll=' . $poll . ' notify=' . $notify . ' profile=' . $profile . ' vcard=' . print_r($vcard,true));
$vcard['fn'] = notags($vcard['fn']);
$vcard['nick'] = notags($vcard['nick']);
// do we have enough information?
if(! ((x($vcard['fn'])) && ($poll) && ($profile))) {
notice( t('The profile address specified does not provide adequate information.') . EOL);
goaway($_SESSION['return_url']);
}
if(! $notify) {
notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
}
if(! x($vcard,'photo'))
$vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
// check if we already have a contact
// the poll url is more reliable than the profile url, as we may have
// indirect links or webfinger links
$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
intval(local_user()),
dbesc($poll)
);
if(count($r)) {
// update contact
if($r[0]['rel'] == REL_VIP) {
q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval(REL_BUD),
intval($r[0]['id']),
intval(local_user())
);
}
}
else {
// create contact record
$r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `alias`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`, `priority`,
`blocked`, `readonly`, `pending` )
VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, 0, 0, 0 ) ",
intval(local_user()),
dbesc(datetime_convert()),
dbesc($profile),
dbesc($alias),
dbesc($notify),
dbesc($poll),
dbesc($vcard['fn']),
dbesc($vcard['nick']),
dbesc($vcard['photo']),
dbesc($network),
intval(REL_FAN),
intval($priority)
);
}
$r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
dbesc($profile),
intval(local_user())
);
if(! count($r)) {
notice( t('Unable to retrieve contact information.') . EOL);
goaway($_SESSION['return_url']);
// NOTREACHED
}
$contact = $r[0];
$contact_id = $r[0]['id'];
require_once("Photo.php");
$photos = import_profile_photo($vcard['photo'],local_user(),$contact_id);
$r = q("UPDATE `contact` SET `photo` = '%s',
`thumb` = '%s',
`micro` = '%s',
`name-date` = '%s',
`uri-date` = '%s',
`avatar-date` = '%s'
WHERE `id` = %d LIMIT 1
",
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($contact_id)
);
// pull feed and consume it, which should subscribe to the hub.
proc_run('php',"include/poller.php","$contact_id");
// create a follow slap
$tpl = load_view_file('view/follow_slap.tpl');
$slap = replace_macros($tpl, array(
'$name' => $a->user['username'],
'$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
'$photo' => $a->contact['photo'],
'$thumb' => $a->contact['thumb'],
'$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
'$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
'$title' => '',
'$type' => 'text',
'$content' => t('following'),
'$nick' => $a->user['nickname'],
'$verb' => ACTIVITY_FOLLOW,
'$ostat_follow' => ''
));
$r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
intval(local_user())
);
if((count($r)) && (x($contact,'notify')) && (strlen($contact['notify']))) {
require_once('include/salmon.php');
slapper($r[0],$contact['notify'],$slap);
}
goaway($_SESSION['return_url']);
// NOTREACHED
}