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friendica/include/items.php
Mike Macgirvin b376f21533 notify folks who have been tagged in a post
2010-10-31 20:36:59 -07:00

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<?php
require_once('bbcode.php');
function get_feed_for(&$a, $dfrn_id, $owner_id, $last_update, $direction = 0) {
// default permissions - anonymous user
$sql_extra = "
AND `allow_cid` = ''
AND `allow_gid` = ''
AND `deny_cid` = ''
AND `deny_gid` = ''
";
if(strlen($owner_id) && ! intval($owner_id)) {
$r = q("SELECT `uid`, `nickname` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($owner_id)
);
if(count($r)) {
$owner_id = $r[0]['uid'];
$owner_nick = $r[0]['nickname'];
}
}
$r = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
intval($owner_id)
);
if(count($r))
$owner = $r[0];
else
killme();
if($dfrn_id && $dfrn_id != '*') {
$sql_extra = '';
switch($direction) {
case (-1):
$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
$my_id = $dfrn_id;
break;
case 0:
$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
$my_id = '1:' . $dfrn_id;
break;
case 1:
$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
$my_id = '0:' . $dfrn_id;
break;
default:
return false;
break; // NOTREACHED
}
$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
intval($owner_id)
);
if(! count($r))
return false;
$contact = $r[0];
$groups = init_groups_visitor($contact['id']);
if(count($groups)) {
for($x = 0; $x < count($groups); $x ++)
$groups[$x] = '<' . intval($groups[$x]) . '>' ;
$gs = implode('|', $groups);
}
else
$gs = '<<>>' ; // Impossible to match
$sql_extra = sprintf("
AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' )
AND ( `deny_cid` = '' OR NOT `deny_cid` REGEXP '<%d>' )
AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
AND ( `deny_gid` = '' OR NOT `deny_gid` REGEXP '%s')
",
intval($contact['id']),
intval($contact['id']),
dbesc($gs),
dbesc($gs)
);
}
if($dfrn_id === '' || $dfrn_id === '*')
$sort = 'DESC';
else
$sort = 'ASC';
if(! strlen($last_update))
$last_update = 'now - 30 days';
$check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
$r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
`contact`.`name`, `contact`.`photo`, `contact`.`url`,
`contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
`contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
`contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
WHERE `item`.`uid` = %d AND `item`.`visible` = 1
AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
$sql_extra
ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
intval($owner_id),
dbesc($check_date),
dbesc($check_date),
dbesc($sort)
);
// Will check further below if this actually returned results.
// We will provide an empty feed in any case.
$items = $r;
$feed_template = load_view_file('view/atom_feed.tpl');
$tomb_template = load_view_file('view/atom_tomb.tpl');
$item_template = load_view_file('view/atom_item.tpl');
$cmnt_template = load_view_file('view/atom_cmnt.tpl');
$atom = '';
$hub = get_config('system','huburl');
$hubxml = '';
if(strlen($hub)) {
$hubs = explode(',', $hub);
if(count($hubs)) {
foreach($hubs as $h) {
$h = trim($h);
if(! strlen($h))
continue;
$hubxml .= '<link rel="hub" href="' . xmlify($h) . '" />' . "\n" ;
}
}
}
$salmon = '<link rel="salmon" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
$salmon .= '<link rel="http://salmon-protocol.org/ns/salmon-replies" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
$salmon .= '<link rel="http://salmon-protocol.org/ns/salmon-mention" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
$atom .= replace_macros($feed_template, array(
'$feed_id' => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
'$feed_title' => xmlify($owner['name']),
'$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
'$hub' => $hubxml,
'$salmon' => $salmon,
'$name' => xmlify($owner['name']),
'$profile_page' => xmlify($owner['url']),
'$photo' => xmlify($owner['photo']),
'$thumb' => xmlify($owner['thumb']),
'$picdate' => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
'$uridate' => xmlify(datetime_convert('UTC','UTC',$owner['uri-date'] . '+00:00' , ATOM_TIME)) ,
'$namdate' => xmlify(datetime_convert('UTC','UTC',$owner['name-date'] . '+00:00' , ATOM_TIME))
));
if(! count($items)) {
$atom .= '</feed>' . "\r\n";
return $atom;
}
foreach($items as $item) {
// public feeds get html, our own nodes use bbcode
if($dfrn_id === '*') {
$allow = (($item['last-child']) ? 1 : 0);
$item['body'] = bbcode($item['body']);
$type = 'html';
}
else {
$allow = ((($item['last-child']) && ($contact['rel']) && ($contact['rel'] != REL_FAN)) ? 1 : 0);
$type = 'text';
}
if($item['deleted']) {
$atom .= replace_macros($tomb_template, array(
'$id' => xmlify($item['uri']),
'$updated' => xmlify(datetime_convert('UTC', 'UTC', $item['edited'] . '+00:00' , ATOM_TIME))
));
}
else {
$verb = construct_verb($item);
$actobj = construct_activity($item);
if($item['parent'] == $item['id']) {
$atom .= replace_macros($item_template, array(
'$name' => xmlify($item['name']),
'$profile_page' => xmlify($item['url']),
'$thumb' => xmlify($item['thumb']),
'$owner_name' => xmlify($item['owner-name']),
'$owner_profile_page' => xmlify($item['owner-link']),
'$owner_thumb' => xmlify($item['owner-avatar']),
'$item_id' => xmlify($item['uri']),
'$title' => xmlify($item['title']),
'$published' => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
'$updated' => xmlify(datetime_convert('UTC', 'UTC', $item['edited'] . '+00:00' , ATOM_TIME)),
'$location' => xmlify($item['location']),
'$coord' => xmlify($item['coord']),
'$type' => $type,
'$alt' => xmlify($a->get_baseurl() . '/display/' . $owner_nick . '/' . $item['id']),
'$content' => xmlify($item['body']),
'$verb' => xmlify($verb),
'$actobj' => $actobj, // do not xmlify
'$comment_allow' => $allow
));
}
else {
$atom .= replace_macros($cmnt_template, array(
'$name' => xmlify($item['name']),
'$profile_page' => xmlify($item['url']),
'$thumb' => xmlify($item['thumb']),
'$item_id' => xmlify($item['uri']),
'$title' => xmlify($item['title']),
'$published' => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
'$updated' => xmlify(datetime_convert('UTC', 'UTC', $item['edited'] . '+00:00' , ATOM_TIME)),
'$type' => $type,
'$content' => xmlify($item['body']),
'$alt' => xmlify($a->get_baseurl() . '/display/' . $owner_nick . '/' . $item['id']),
'$verb' => xmlify($verb),
'$actobj' => $actobj, // do not xmlify
'$parent_id' => xmlify($item['parent-uri']),
'$comment_allow' => $allow
));
}
}
}
$atom .= '</feed>' . "\r\n";
return $atom;
}
function construct_verb($item) {
if($item['verb'])
return $item['verb'];
return ACTIVITY_POST;
}
function construct_activity($item) {
if($item['object']) {
$o = '<as:object>' . "\r\n";
$r = @simplexml_load_string($item['object']);
if($r->type)
$o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
if($r->id)
$o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
if($r->link)
$o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
if($r->title)
$o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
if($r->content)
$o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
$o .= '</as:object>' . "\r\n";
return $o;
}
return '';
}
function get_atom_elements($feed,$item) {
require_once('library/HTMLPurifier.auto.php');
require_once('include/html2bbcode.php');
$best_photo = array();
$res = array();
$author = $item->get_author();
$res['author-name'] = unxmlify($author->get_name());
$res['author-link'] = unxmlify($author->get_link());
$res['uri'] = unxmlify($item->get_id());
$res['title'] = unxmlify($item->get_title());
$res['body'] = unxmlify($item->get_content());
// look for a photo. We should check media size and find the best one,
// but for now let's just find any author photo
$rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
$base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
foreach($base as $link) {
if(! $res['author-avatar']) {
if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
$res['author-avatar'] = unxmlify($link['attribs']['']['href']);
}
}
}
$rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
$base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
if($base && count($base)) {
foreach($base as $link) {
if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
$res['author-link'] = unxmlify($link['attribs']['']['href']);
if(! $res['author-avatar']) {
if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
$res['author-avatar'] = unxmlify($link['attribs']['']['href']);
}
}
}
}
// No photo/profile-link on the item - look at the feed level
if((! $res['author-link']) || (! $res['author-avatar'])) {
$rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
$base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
foreach($base as $link) {
if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
$res['author-link'] = unxmlify($link['attribs']['']['href']);
if(! $res['author-avatar']) {
if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
$res['author-avatar'] = unxmlify($link['attribs']['']['href']);
}
}
}
$rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
$base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
if($base && count($base)) {
foreach($base as $link) {
if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
$res['author-link'] = unxmlify($link['attribs']['']['href']);
if(! $res['author-avatar']) {
if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
$res['author-avatar'] = unxmlify($link['attribs']['']['href']);
}
}
}
}
}
$maxlen = get_max_import_size();
if($maxlen && (strlen($res['body']) > $maxlen))
$res['body'] = substr($res['body'],0, $maxlen);
// It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
// the content type. Our own network only emits text normally, though it might have been converted to
// html if we used a pubsubhubbub transport. But if we see even one html open tag in our text, we will
// have to assume it is all html and needs to be purified.
// It doesn't matter all that much security wise - because before this content is used anywhere, we are
// going to escape any tags we find regardless, but this lets us import a limited subset of html from
// the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
// html.
if(strpos($res['body'],'<')) {
$res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
'[youtube]$1[/youtube]', $res['body']);
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.DefinitionImpl', null);
// we shouldn't need a whitelist, because the bbcode converter
// will strip out any unsupported tags.
// $config->set('HTML.Allowed', 'p,b,a[href],i');
$purifier = new HTMLPurifier($config);
$res['body'] = $purifier->purify($res['body']);
}
$res['body'] = html2bbcode($res['body']);
$allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
if($allow && $allow[0]['data'] == 1)
$res['last-child'] = 1;
else
$res['last-child'] = 0;
$rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
if($rawcreated)
$res['created'] = unxmlify($rawcreated[0]['data']);
$rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
if($rawlocation)
$res['location'] = unxmlify($rawlocation[0]['data']);
$rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
if($rawedited)
$res['edited'] = unxmlify($rawcreated[0]['data']);
$rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
$res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
$res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
$res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
$res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
$base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
foreach($base as $link) {
if(! $res['owner-avatar']) {
if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
$res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
}
}
}
$rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
if($rawgeo)
$res['coord'] = unxmlify($rawgeo[0]['data']);
$rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
// select between supported verbs
if($rawverb)
$res['verb'] = unxmlify($rawverb[0]['data']);
$rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
if($rawobj) {
$res['object'] = '<object>' . "\n";
if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
$res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
$res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
}
if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
$res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] === 'alternate')
$res['object'] .= '<link>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href'] . '</link>' . "\n";
if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
$res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
$body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
if(! $body)
$body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
if(strpos($body,'<')) {
$body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
'[youtube]$1[/youtube]', $body);
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.DefinitionImpl', null);
$purifier = new HTMLPurifier($config);
$body = $purifier->purify($body);
}
$body = html2bbcode($body);
$res['object'] .= '<content>' . $body . '</content>' . "\n";
}
$res['object'] .= '</object>' . "\n";
}
return $res;
}
function item_store($arr) {
if($arr['gravity'])
$arr['gravity'] = intval($arr['gravity']);
elseif($arr['parent-uri'] == $arr['uri'])
$arr['gravity'] = 0;
elseif(activity_match($arr['verb'],ACTIVITY_POST))
$arr['gravity'] = 6;
if(! x($arr,'type'))
$arr['type'] = 'remote';
$arr['wall'] = ((intval($arr['wall'])) ? 1 : 0);
$arr['uri'] = notags(trim($arr['uri']));
$arr['author-name'] = notags(trim($arr['author-name']));
$arr['author-link'] = notags(trim($arr['author-link']));
$arr['author-avatar'] = notags(trim($arr['author-avatar']));
$arr['owner-name'] = notags(trim($arr['owner-name']));
$arr['owner-link'] = notags(trim($arr['owner-link']));
$arr['owner-avatar'] = notags(trim($arr['owner-avatar']));
$arr['created'] = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
$arr['edited'] = ((x($arr,'edited') !== false) ? datetime_convert('UTC','UTC',$arr['edited']) : datetime_convert());
$arr['changed'] = datetime_convert();
$arr['title'] = notags(trim($arr['title']));
$arr['location'] = notags(trim($arr['location']));
$arr['coord'] = notags(trim($arr['coord']));
$arr['body'] = escape_tags(trim($arr['body']));
$arr['last-child'] = intval($arr['last-child']);
$arr['visible'] = ((x($arr,'visible') !== false) ? intval($arr['visible']) : 1);
$arr['deleted'] = 0;
$arr['parent-uri'] = notags(trim($arr['parent-uri']));
$arr['verb'] = notags(trim($arr['verb']));
$arr['object-type'] = notags(trim($arr['object-type']));
$arr['object'] = trim($arr['object']);
$parent_id = 0;
$parent_missing = false;
dbesc_array($arr);
$r = q("INSERT INTO `item` (`"
. implode("`, `", array_keys($arr))
. "`) VALUES ('"
. implode("', '", array_values($arr))
. "')" );
// find the parent and snarf the item id and ACL's
$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($arr['parent-uri']),
intval($arr['uid'])
);
if(count($r)) {
$parent_id = $r[0]['id'];
$allow_cid = $r[0]['allow_cid'];
$allow_gid = $r[0]['allow_gid'];
$deny_cid = $r[0]['deny_cid'];
$deny_gid = $r[0]['deny_gid'];
}
else {
$parent_missing = true;
}
$r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
$arr['uri'], // already dbesc'd
intval($arr['uid'])
);
if(count($r))
$current_post = $r[0]['id'];
else
return 0;
if($parent_missing) {
// perhaps the parent was deleted, but in any case, this thread is dead
// and unfortunately our brand new item now has to be destroyed
q("DELETE FROM `item` WHERE `id` = %d LIMIT 1",
intval($current_post)
);
return 0;
}
// Set parent id - all of the parent's ACL's are also inherited by this post
$r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
`deny_cid` = '%s', `deny_gid` = '%s' WHERE `id` = %d LIMIT 1",
intval($parent_id),
dbesc($allow_cid),
dbesc($allow_gid),
dbesc($deny_cid),
dbesc($deny_gid),
intval($current_post)
);
return $current_post;
}
function get_item_contact($item,$contacts) {
if(! count($contacts) || (! is_array($item)))
return false;
foreach($contacts as $contact) {
if($contact['id'] == $item['contact-id']) {
return $contact;
break; // NOTREACHED
}
}
return false;
}
function dfrn_deliver($owner,$contact,$atom) {
if((! strlen($contact['dfrn-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
return 3;
$idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
if($contact['duplex'] && $contact['dfrn-id'])
$idtosend = '0:' . $orig_id;
if($contact['duplex'] && $contact['issued-id'])
$idtosend = '1:' . $orig_id;
$url = $contact['notify'] . '?dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION ;
logger('dfrn_deliver: ' . $url);
$xml = fetch_url($url);
logger('dfrn_deliver: ' . $xml);
if(! $xml)
return 3;
$res = simplexml_load_string($xml);
if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
return (($res->status) ? $res->status : 3);
$postvars = array();
$sent_dfrn_id = hex2bin($res->dfrn_id);
$challenge = hex2bin($res->challenge);
$final_dfrn_id = '';
if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
}
else {
openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
}
$final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
if(strpos($final_dfrn_id,':') == 1)
$final_dfrn_id = substr($final_dfrn_id,2);
if($final_dfrn_id != $orig_id) {
logger('dfrn_deliver: wrong dfrn_id.');
// did not decode properly - cannot trust this site
return 3;
}
$postvars['dfrn_id'] = $idtosend;
$postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
if(($contact['rel']) && ($contact['rel'] != REL_FAN) && (! $contact['blocked']) && (! $contact['readonly'])) {
$postvars['data'] = $atom;
}
elseif($owner['page-flags'] == PAGE_COMMUNITY) {
$postvars['data'] = $atom;
}
else {
$postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
}
$xml = post_url($contact['notify'],$postvars);
logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true) . "\n" . "RECEIVING: " . $xml);
$res = simplexml_load_string($xml);
return $res->status;
}
/*
*
* consume_feed - process atom feed and update anything/everything we might need to update
*
* $xml = the (atom) feed to consume - no RSS spoken here, it might partially work since simplepie
* handles both, but we don't claim it will work well, and are reasonably certain it won't.
* $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
* It is this person's stuff that is going to be updated.
* $contact = the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
* from an external network and MAY create an appropriate contact record. Otherwise, we MUST
* have a contact record.
* $hub = should wefind ahub declation in the feed, pass it back to our calling process, who might (or
* might not) try and subscribe to it.
*
*/
function consume_feed($xml,$importer,$contact, &$hub) {
require_once('simplepie/simplepie.inc');
$feed = new SimplePie();
$feed->set_raw_data($xml);
$feed->enable_order_by_date(false);
$feed->init();
// Check at the feed level for updated contact name and/or photo
$debugging = get_config('system','debugging');
$name_updated = '';
$new_name = '';
$photo_timestamp = '';
$photo_url = '';
$hubs = $feed->get_links('hub');
if(count($hubs))
$hub = implode(',', $hubs);
$rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
if($rawtags) {
$elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
$name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
$new_name = $elems['name'][0]['data'];
}
if(($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
$photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
$photo_url = $elems['link'][0]['attribs']['']['href'];
}
}
if(! $photo_timestamp) {
$photo_rawupdate = $feed->get_feed_tags(NAMESPACE_DFRN,'icon-updated');
if($photo_rawupdate) {
$photo_timestamp = datetime_convert('UTC','UTC',$photo_rawupdate[0]['data']);
$photo_url = $feed->get_image_url();
}
}
if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
require_once("Photo.php");
$photo_failure = false;
$r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
intval($contact['id']),
intval($contact['uid'])
);
if(count($r)) {
$resource_id = $r[0]['resource-id'];
$img_str = fetch_url($photo_url,true);
$img = new Photo($img_str);
if($img->is_valid()) {
q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND contact-id` = %d AND `uid` = %d",
dbesc($resource_id),
intval($contact['id']),
intval($contact['uid'])
);
$img->scaleImageSquare(175);
$hash = $resource_id;
$r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 4);
$img->scaleImage(80);
$r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 5);
if($r)
q("UPDATE `contact` SET `avatar-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
dbesc(datetime_convert()),
intval($contact['uid']),
intval($contact['id'])
);
}
}
}
if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
dbesc(notags(trim($new_name))),
dbesc(datetime_convert()),
intval($contact['uid']),
intval($contact['id'])
);
}
// Now process the feed
if($feed->get_item_quantity()) {
foreach($feed->get_items() as $item) {
$deleted = false;
$rawdelete = $item->get_item_tags( NAMESPACE_TOMB, 'deleted-entry');
if(isset($rawdelete[0]['attribs']['']['ref'])) {
$uri = $rawthread[0]['attribs']['']['ref'];
$deleted = true;
if(isset($rawdelete[0]['attribs']['']['when'])) {
$when = $rawthread[0]['attribs']['']['when'];
$when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
}
else
$when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
}
if($deleted && is_array($contact)) {
$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
dbesc($uri),
intval($importer['uid']),
intval($contact['id'])
);
if(count($r)) {
$item = $r[0];
if($item['uri'] == $item['parent-uri']) {
$r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
`body` = '', `title` = ''
WHERE `parent-uri` = '%s' AND `uid` = %d",
dbesc($when),
dbesc(datetime_convert()),
dbesc($item['uri']),
intval($importer['uid'])
);
}
else {
$r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
`body` = '', `title` = ''
WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($when),
dbesc(datetime_convert()),
dbesc($uri),
intval($importer['uid'])
);
if($item['last-child']) {
// ensure that last-child is set in case the comment that had it just got wiped.
$q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
dbesc(datetime_convert()),
dbesc($item['parent-uri']),
intval($item['uid'])
);
// who is the last child now?
$r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
ORDER BY `created` DESC LIMIT 1",
dbesc($item['parent-uri']),
intval($importer['uid'])
);
if(count($r)) {
q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
intval($r[0]['id'])
);
}
}
}
}
continue;
}
$is_reply = false;
$item_id = $item->get_id();
$rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
if(isset($rawthread[0]['attribs']['']['ref'])) {
$is_reply = true;
$parent_uri = $rawthread[0]['attribs']['']['ref'];
}
if(($is_reply) && is_array($contact)) {
// Have we seen it? If not, import it.
$item_id = $item->get_id();
$r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($item_id),
intval($importer['uid'])
);
// FIXME update content if 'updated' changes
if(count($r)) {
$allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
if($allow && $allow[0]['data'] != $r[0]['last-child']) {
$r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
dbesc(datetime_convert()),
dbesc($parent_uri),
intval($importer['uid'])
);
$r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
intval($allow[0]['data']),
dbesc(datetime_convert()),
dbesc($item_id),
intval($importer['uid'])
);
}
continue;
}
$datarray = get_atom_elements($feed,$item);
if($contact['network'] === 'stat' && strlen($datarray['title']))
unset($datarray['title']);
$datarray['parent-uri'] = $parent_uri;
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $contact['id'];
if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
$datarray['type'] = 'activity';
$datarray['gravity'] = GRAVITY_LIKE;
}
$r = item_store($datarray);
continue;
}
else {
// Head post of a conversation. Have we seen it? If not, import it.
$item_id = $item->get_id();
$r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($item_id),
intval($importer['uid'])
);
if(count($r)) {
$allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
if($allow && $allow[0]['data'] != $r[0]['last-child']) {
$r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
intval($allow[0]['data']),
dbesc(datetime_convert()),
dbesc($item_id),
intval($importer['uid'])
);
}
continue;
}
$datarray = get_atom_elements($feed,$item);
if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
logger('consume-feed: New follower');
new_follower($importer,$contact,$datarray,$item);
return;
}
if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW)) {
lose_follower($importer,$contact,$datarray,$item);
return;
}
if(! is_array($contact))
return;
if($contact['network'] === 'stat') {
if(strlen($datarray['title']))
unset($datarray['title']);
if(($contact['rel'] == REL_VIP) || ($contact['rel'] == REL_BUD))
$datarray['last-child'] = 1;
}
$datarray['parent-uri'] = $item_id;
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $contact['id'];
$r = item_store($datarray);
continue;
}
}
}
}
function new_follower($importer,$contact,$datarray,$item) {
$url = notags(trim($datarray['author-link']));
$name = notags(trim($datarray['author-name']));
$photo = notags(trim($datarray['author-avatar']));
$rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
$nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
if(is_array($contact)) {
if($contact['network'] == 'stat' && $contact['rel'] == REL_FAN) {
$r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval(REL_BUD),
intval($contact['id']),
intval($importer['uid'])
);
}
// send email notification to owner?
}
else {
// create contact record - set to readonly
$r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
`blocked`, `readonly`, `pending` )
VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 1, 1 ) ",
intval($importer['uid']),
dbesc(datetime_convert()),
dbesc($url),
dbesc($name),
dbesc($nick),
dbesc($photo),
dbesc('stat'),
intval(REL_VIP)
);
$r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
intval($importer['uid']),
dbesc($url),
intval(REL_VIP)
);
if(count($r))
$contact_record = $r[0];
// create notification
$hash = random_string();
if(is_array($contact_record)) {
$ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
VALUES ( %d, %d, 0, 0, '%s', '%s' )",
intval($importer['uid']),
intval($contact_record['id']),
dbesc($hash),
dbesc(datetime_convert())
);
}
}
}
function lose_follower($importer,$contact,$datarray,$item) {
if(($contact['rel'] == REL_BUD) || ($contact['rel'] == REL_FAN)) {
q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
intval(REL_FAN),
intval($contact['id'])
);
}
else {
contact_remove($contact['id']);
}
}
function subscribe_to_hub($url,$importer,$contact) {
if(is_array($importer)) {
$r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
intval($importer['uid'])
);
}
if(! count($r))
return;
$push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
// Use a single verify token, even if multiple hubs
$verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
$params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
if(! strlen($contact['hub-verify'])) {
$r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
dbesc($verify_token),
intval($contact['id'])
);
}
post_url($url,$params);
return;
}
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