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
function get_feed_for(&$a, $dfrn_id, $owner_id, $last_update) {
require_once('bbcode.php');
// 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 != '*') {
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
dbesc($dfrn_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($gs)
);
}
if(! strlen($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 NOT `item`.`type` IN ( 'remote', 'net-comment' ) AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
$sql_extra
ORDER BY `parent` ASC, `created` ASC LIMIT 0, 300",
intval($owner_id),
dbesc($check_date),
dbesc($check_date)
);
if(! count($r))
killme();
$items = $r;
$feed_template = file_get_contents('view/atom_feed.tpl');
$tomb_template = file_get_contents('view/atom_tomb.tpl');
$item_template = file_get_contents('view/atom_item.tpl');
$cmnt_template = file_get_contents('view/atom_cmnt.tpl');
$atom = '';
$atom .= replace_macros($feed_template, array(
'$feed_id' => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
'$feed_title' => xmlify($owner['name']),
'$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', $updated . '+00:00' , ATOM_TIME)) ,
'$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',$owner['name-date'] . '+00:00' , ATOM_TIME))
));
foreach($items as $item) {
// public feeds get html, our own nodes use bbcode
if($dfrn_id == '*') {
$item['body'] = bbcode($item['body']);
$type = 'html';
}
else {
$type = 'text';
}
if($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($item['location']),
'$type' => $type,
'$content' => xmlify($item['body']),
'$verb' => xmlify($verb),
'$actobj' => $actobj, // do not xmlify
'$comment_allow' => ((($item['last-child']) && ($contact['rel']) && ($contact['rel'] != REL_FAN)) ? 1 : 0)
));
}
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($item['body']),
'$verb' => xmlify($verb),
'$actobj' => $actobj, // do not xmlify
'$parent_id' => xmlify($item['parent-uri']),
'$comment_allow' => (($item['last-child']) ? 1 : 0)
));
}
}
}
$atom .= '</feed>' . "\r\n";
return $atom;
}
function construct_verb($item) {
if($item['verb'])
return $item['verb'];
return ACTIVITY_POST;
}
function construct_activity($item) {
if($item['type'] == 'activity') {
}
return '';
}
function get_atom_elements($item) {
require_once('library/HTMLPurifier.auto.php');
require_once('include/html2bbcode.php');
$res = array();
$raw_author = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
if($raw_author) {
if($raw_author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] == 'photo')
$res['author-avatar'] = unxmlify($raw_author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href']);
}
$author = $item->get_author();
$res['author-name'] = unxmlify($author->get_name());
$res['author-link'] = unxmlify($author->get_link());
if(! $res['author-avatar'])
$res['author-avatar'] = unxmlify($author->get_avatar());
$res['uri'] = unxmlify($item->get_id());
$res['title'] = unxmlify($item->get_title());
$res['body'] = unxmlify($item->get_content());
$maxlen = get_max_import_size();
if($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('Core.DefinitionCache', 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'][0]['attribs']['']['rel'] == 'photo')
$res['owner-avatar'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href']);
elseif($rawowner[0]['child'][NAMESPACE_DFRN]['avatar'][0]['data'])
$res['owner-avatar'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['avatar'][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-type'] = $rawobj[0]['object-type'][0]['data'];
$res['object'] = $rawobj[0];
}
return $res;
}
function post_remote($a,$arr) {
//print_r($arr);
if(! x($arr,'type'))
$arr['type'] = 'remote';
$arr['uri'] = notags(trim($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']));
$arr['created'] = datetime_convert('UTC','UTC',$arr['created'],'Y-m-d H:i:s');
$arr['edited'] = datetime_convert('UTC','UTC',$arr['edited'],'Y-m-d H:i:s');
$arr['changed'] = datetime_convert();
$arr['title'] = notags(trim($arr['title']));
$arr['location'] = notags(trim($arr['location']));
$arr['body'] = escape_tags(trim($arr['body']));
$arr['last-child'] = intval($arr['last-child']);
$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))
. "')" );
$r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($arr['parent-uri']),
intval($arr['uid'])
);
if(count($r))
$parent_id = $r[0]['id'];
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;
}
$r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d LIMIT 1",
intval($parent_id),
intval($current_post)
);
return $current_post;
}