streams/include/items.php
2024-03-09 22:17:09 +11:00

5019 lines
172 KiB
PHP

<?php
/**
* @file include/items.php
* @brief Items related functions.
*/
use Code\Lib\JcsEddsa2022;
use Code\Lib\Libzot;
use Code\Lib\Libsync;
use Code\Lib\AccessList;
use Code\Lib\Activity;
use Code\Lib\ActivityStreams;
use Code\Lib\Apps;
use Code\Lib\Enotify;
use Code\Lib\Channel;
use Code\Lib\LanguageDetect;
use Code\Lib\MarkdownSoap;
use Code\Lib\MessageFilter;
use Code\Lib\Config;
use Code\Lib\IConfig;
use Code\Lib\ObjCache;
use Code\Lib\PConfig;
use Code\Lib\LibBlock;
use Code\Lib\ThreadListener;
use Code\Lib\Tombstone;
use Code\Access\PermissionLimits;
use Code\Access\PermissionRoles;
use Code\Access\AccessControl;
use Code\Daemon\Run;
use Code\Extend\Hook;
require_once('include/feedutils.php');
require_once('include/photo_factory.php');
/**
* @brief Collects recipients.
*
* @param array $item
* @param bool $private_envelope
* @return array containing the recipients
*/
function collect_recipients($item, &$private_envelope) {
$private_envelope = (bool)intval($item['item_private']);
$recipients = [];
if ($item['allow_cid'] || $item['allow_gid'] || $item['deny_cid'] || $item['deny_gid']) {
// it is private
$recipients = item_get_recipients($item);
$private_envelope = true;
}
else {
// if the post is marked private but there are no recipients and public_policy/scope = self,
// only add the author and owner as recipients. The ACL for the post may live on the hub of
// a different clone. We need to get the post to that hub.
// The post may be private by virtue of not being visible to anybody on the internet,
// but there are no envelope recipients, so set this to false.
$private_envelope = false;
$r = q("select abook_xchan, xchan_network from abook left join xchan on abook_xchan = xchan_hash where abook_channel = %d and abook_self = 0 and abook_pending = 0 and abook_archived = 0 ",
intval($item['uid'])
);
if ($r) {
foreach ($r as $rv) {
$recipients[] = $rv['abook_xchan'];
}
}
// Forward to thread listeners, *unless* there is even a remote hint that the item
// might have some privacy attached. This could be (for instance) an ActivityPub DM
// in the middle of a public thread. Unless we can guarantee beyond all doubt that
// this is public, don't allow it to go to thread listeners.
if (! intval($item['item_private'])) {
$r = array_merge(ThreadListener::fetch_by_target($item['parent_mid']),
ThreadListener::fetch_by_target(str_replace('/activity/','/item/',$item['parent_mid']))
);
if ($item['mid'] !== $item['parent_mid']) {
$r = array_merge($r, ThreadListener::fetch_by_target($item['mid']),
ThreadListener::fetch_by_target(str_replace('/activity/','/item/',$item['mid']))
);
}
if ($r) {
foreach ($r as $rv) {
if (! in_array($rv['portable_id'],$recipients)) {
$recipients[] = $rv['portable_id'];
}
}
}
// We've determined this is public. Send it also to the system channel.
$sys = Channel::get_system();
if ($sys && intval($item['uid']) !== intval($sys['channel_id'])) {
$recipients[] = $sys['channel_hash'];
}
}
// Add the authors of any posts in this thread, if they are known to us.
// This is specifically designed to forward wall-to-wall posts to the original author,
// in case they aren't a connection but have permission to write on our wall.
// This is important for issue tracker channels. It should be a no-op for most channels.
// Whether they will accept the delivery is not determined here, but should
// be taken into account by zot:process_delivery()
$r = q("select author_xchan from item where parent = %d",
intval($item['parent'])
);
if ($r) {
foreach ($r as $rv) {
if (! in_array($rv['author_xchan'],$recipients)) {
$recipients[] = $rv['author_xchan'];
}
}
}
}
// This is a somewhat expensive operation but important.
// Don't send this item to anybody who doesn't have the deliver_stream permission
$recipients = check_deliver_permissions($item['uid'],$recipients);
// Add both the author and owner (if different).
$recipients[] = $item['author_xchan'];
if ($item['owner_xchan'] != $item['author_xchan']) {
$recipients[] = $item['owner_xchan'];
}
return $recipients;
}
function item_get_recipients($item) {
$allow_people = expand_acl($item['allow_cid']);
$allow_groups = AccessList::expand(expand_acl($item['allow_gid']));
$recipients = array_values(array_unique(array_merge($allow_people,$allow_groups)));
// if you specifically deny somebody but haven't allowed anybody, we'll allow everybody in your
// address book minus the denied connections. The post is still private and can't be seen publicly
// as that would allow the denied person to see the post by logging out.
if ((! $item['allow_cid']) && (! $item['allow_gid'])) {
$r = q("select * from abook where abook_channel = %d and abook_self = 0 and abook_pending = 0 and abook_archived = 0 ",
intval($item['uid'])
);
if ($r) {
foreach ($r as $rr) {
$recipients[] = $rr['abook_xchan'];
}
}
}
$deny_people = expand_acl($item['deny_cid']);
$deny_groups = AccessList::expand(expand_acl($item['deny_gid']));
$deny = array_values(array_unique(array_merge($deny_people,$deny_groups)));
// Don't deny anybody if nobody was allowed (e.g. they were all filtered out)
// That would lead to array_diff doing the wrong thing.
// This will result in a private post that won't be delivered to anybody.
if ($recipients && $deny) {
$recipients = array_diff($recipients,$deny);
}
return $recipients;
}
function comments_are_now_closed($item) {
$x = [
'item' => $item,
'closed' => 'unset'
];
/**
* @hooks comments_are_now_closed
* Called to determine whether commenting should be closed
* * \e array \b item
* * \e boolean \b closed - return value
*/
Hook::call('comments_are_now_closed', $x);
if ($x['closed'] !== 'unset') {
return $x['closed'];
}
if ($item['comments_closed'] > NULL_DATE && datetime_convert() > $item['comments_closed']) {
return true;
}
return false;
}
function item_normal() {
return " and item.item_hidden = 0 and item.item_type = 0 and item.item_deleted = 0
and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
and item.item_blocked = 0 and item.obj_type != '" . ACTIVITY_OBJ_FILE . "' ";
}
function item_normal_draft() {
return " and item.item_hidden = 0 and item.item_type = 0 and item.item_deleted = 0
and item.item_pending_remove = 0 and item.item_blocked = 0 and item.obj_type != '" . ACTIVITY_OBJ_FILE . "' ";
}
function item_normal_search() {
return " and item.item_hidden = 0 and item.item_type in (0,3,6,7) and item.item_deleted = 0
and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
and item.item_blocked = 0 and item.obj_type != '" . ACTIVITY_OBJ_FILE . "' ";
}
function item_normal_update() {
return " and item.item_hidden = 0 and item.item_type = 0
and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
and item.item_blocked = 0 and item.obj_type != '" . ACTIVITY_OBJ_FILE . "' ";
}
function item_normal_moderate() {
return " and item.item_hidden = 0 and item.item_type = 0 and item.item_deleted = 0
and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
and item.item_blocked in (0, 4) and item.obj_type != '" . ACTIVITY_OBJ_FILE . "' ";
}
/**
* @brief
*
* This is a compatibility function primarily for plugins, because
* in earlier DB schemas this was a much simpler single integer compare
*
* @param array $item
*/
function is_item_normal($item) {
if (intval($item['item_hidden']) || intval($item['item_type']) || intval($item['item_deleted'])
|| intval($item['item_unpublished']) || intval($item['item_delayed']) || intval($item['item_pending_remove'])
|| intval($item['item_blocked']) || ($item['obj_type'] == ACTIVITY_OBJ_FILE)) {
return false;
}
return true;
}
/**
* @brief Decide if current observer has sufficient privileges to comment on item.
*
* This function examines the comment_policy attached to an item and decides if the current observer has
* sufficient privileges to comment. This will normally be called on a remote site where perm_is_allowed()
* will not be suitable because the post owner does not have a local channel_id.
* Generally we should look at the item - in particular the author['abook_flags'] and see if ABOOK_FLAG_SELF is set.
* If it is, you should be able to use perm_is_allowed( ... 'post_comments'), and if it isn't you need to call
* can_comment_on_post()
* We also check the comments_closed date/time on the item if this is set.
*
* @param string $observer_xchan
* @param array $item
* @return bool
*/
function can_comment_on_post($observer_xchan, $item)
{
// logger('Comment_policy: ' . $item['comment_policy'], LOGGER_DEBUG);
$x = [
'observer_hash' => $observer_xchan,
'item' => $item,
'allowed' => 'unset'
];
/**
* @hooks can_comment_on_post
* Called when deciding whether to present a comment box for a post.
* * \e string \b observer_hash
* * \e array \b item
* * \e boolean \b allowed - return value
*/
Hook::call('can_comment_on_post', $x);
if ($x['allowed'] !== 'unset') {
return $x['allowed'];
}
if (! $observer_xchan) {
return false;
}
if ($item['comment_policy'] === 'none' || intval($item['item_nocomment']) || comments_are_now_closed($item)) {
return false;
}
if ($observer_xchan === $item['author_xchan'] || $observer_xchan === $item['owner_xchan']) {
return true;
}
switch ($item['comment_policy']) {
case 'network: red':
case 'network: activitypub':
case 'public':
case 'authenticated':
// Anonymous folks won't ever reach this point (as $observer_xchan will be empty).
// This means we can identify the viewer.
return true;
case 'any connections':
case 'specific':
case 'contacts':
case '':
// local posts only - check if the post owner granted me comment permission
if (local_channel() && array_key_exists('owner', $item) && their_perms_contains(local_channel(), $item['owner']['abook_xchan'], 'post_comments')) {
return true;
}
if (intval($item['item_wall']) && perm_is_allowed($item['uid'], $observer_xchan, 'post_comments')) {
return true;
}
break;
case 'self':
default:
break;
}
if (strstr($item['comment_policy'], 'site:') && strstr($item['comment_policy'], App::get_hostname())) {
return true;
}
return false;
}
function absolutely_no_comments($item) {
if ($item['comment_policy'] === 'none') {
return true;
}
if (intval($item['item_nocomment'])) {
return true;
}
if(comments_are_now_closed($item)) {
return true;
}
return false;
}
/**
* @brief Post an activity.
*
* In its simplest form one needs only to set $arr['body'] to post a note to the logged in channel's wall.
* Much more complex activities can be created. Permissions are checked. No filtering, tag expansion
* or other processing is performed.
*
* @param array $arr
* @param boolean $deliver (optional) default true
* @returns array
* * \e boolean \b success true or false
* * \e array \b activity the resulting activity if successful
*/
function post_activity_item($arr, $deliver = true, $channel = null, $observer = null, $addAndSync = true) {
logger('input: ' . print_r($arr,true), LOGGER_DATA);
$ret = [ 'success' => false ];
$is_comment = false;
if ((isset($arr['parent']) && $arr['parent'] && $arr['parent'] != $arr['id']) || (isset($arr['parent_mid']) && $arr['parent_mid'] && $arr['parent_mid'] != $arr['mid'])) {
$is_comment = true;
}
if (! array_key_exists('item_origin',$arr)) {
$arr['item_origin'] = 1;
}
if (! array_key_exists('item_wall',$arr) && (! $is_comment)) {
$arr['item_wall'] = 0;
}
if (! array_key_exists('item_thread_top',$arr) && (! $is_comment)) {
$arr['item_thread_top'] = 1;
}
if (!$channel) {
$channel = App::get_channel();
}
if (!$observer) {
$observer = App::get_observer();
}
$arr['aid'] = ((isset($arr['aid'])) ? $arr['aid'] : $channel['channel_account_id']);
$arr['uid'] = ((isset($arr['uid'])) ? $arr['uid'] : $channel['channel_id']);
logger('uid: ' . $arr['uid']);
logger('observer_hash: ' . $observer['xchan_hash']);
logger('permission: ' . (($is_comment) ? 'post_comments' : 'post_wall'));
if (! perm_is_allowed($arr['uid'], $observer['xchan_hash'], (($is_comment) ? 'post_comments' : 'post_wall'))) {
logger('permission denied');
$ret['message'] = t('Permission denied');
return $ret;
}
if (! array_key_exists('mimetype',$arr)) {
$arr['mimetype'] = 'text/x-multicode';
}
if (! (isset($arr['mid']) && $arr['mid'])) {
$arr['uuid'] = ((isset($arr['uuid'])) ? $arr['uuid'] : new_uuid());
}
$arr['mid'] = ((isset($arr['mid'])) ? $arr['mid'] : z_root() . '/item/' . $arr['uuid']);
$arr['parent_mid'] = ((isset($arr['parent_mid'])) ? $arr['parent_mid'] : $arr['mid']);
$arr['thr_parent'] = ((isset($arr['thr_parent'])) ? $arr['thr_parent'] : $arr['mid']);
$arr['owner_xchan'] = ((isset($arr['owner_xchan'])) ? $arr['owner_xchan'] : $channel['channel_hash']);
$arr['author_xchan'] = ((isset($arr['author_xchan'])) ? $arr['author_xchan'] : $observer['xchan_hash']);
$arr['verb'] = ((x($arr,'verb')) ? $arr['verb'] : ACTIVITY_POST);
$arr['obj_type'] = ((x($arr,'obj_type')) ? $arr['obj_type'] : ACTIVITY_OBJ_ARTICLE);
if(! ( array_key_exists('allow_cid',$arr) || array_key_exists('allow_gid',$arr)
|| array_key_exists('deny_cid',$arr) || array_key_exists('deny_gid',$arr))) {
$arr['allow_cid'] = $channel['channel_allow_cid'];
$arr['allow_gid'] = $channel['channel_allow_gid'];
$arr['deny_cid'] = $channel['channel_deny_cid'];
$arr['deny_gid'] = $channel['channel_deny_gid'];
}
$arr['comment_policy'] = map_scope(PermissionLimits::Get($channel['channel_id'],'post_comments'));
if (empty($arr['plink'])) {
$arr['plink'] = $arr['mid'];
}
if (!$arr['target']) {
$arr['target'] = [
'id' => str_replace('/item/', '/conversation/', $arr['parent_mid']),
'type' => 'Collection',
'attributedTo' => z_root() . '/channel/' . $channel['channel_address'],
];
$arr['tgt_type'] = 'Collection';
}
// for the benefit of plugins, we will behave as if this is an API call rather than a normal online post
$_REQUEST['api_source'] = 1;
/**
* @hooks post_local
* Called when an item has been posted on this machine via mod/item.php (also via API).
*/
Hook::call('post_local', $arr);
if(x($arr, 'cancel')) {
logger('Post cancelled by plugin.');
return $ret;
}
$post = item_store($arr,$deliver, $addAndSync);
$post_id = 0;
if($post['success']) {
$post_id = $post['item_id'];
$ret['success'] = true;
$ret['item_id'] = $post_id;
$ret['activity'] = $post['item'];
/**
* @hooks post_local_end
* Called after a local post operation has completed.
* * \e array - the item returned from item_store()
*/
Hook::call('post_local_end', $ret['activity']);
}
if($post_id && $deliver) {
Run::Summon([ 'Notifier','activity',$post_id ]);
if (!empty($post['approval_id'])) {
Run::Summon([ 'Notifier','activity',$post['approval_id']]);
}
}
return $ret;
}
function validate_item_elements($message,$arr) {
$result = ['success' => false];
if(! array_key_exists('created',$arr))
$result['message'] = 'missing created, possible author/owner lookup failure';
if((! $arr['mid']) || (! $arr['parent_mid']))
$result['message'] = 'missing message-id or parent message-id';
if(array_key_exists('flags',$message) && in_array('relay',$message['flags']) && $arr['mid'] === $arr['parent_mid'])
$result['message'] = 'relay set on top level post';
if(! $result['message'])
$result['success'] = true;
return $result;
}
function get_item_elements($x) {
$arr = [];
$arr['body'] = $x['body'];
$arr['summary'] = $x['summary'];
$mirror = array_key_exists('revision', $x);
$maxlen = get_max_import_size();
if($maxlen && mb_strlen($arr['body']) > $maxlen) {
$arr['body'] = mb_substr($arr['body'],0,$maxlen,'UTF-8');
logger('get_item_elements: message length exceeds max_import_size: truncated');
}
if($maxlen && mb_strlen($arr['summary']) > $maxlen) {
$arr['summary'] = mb_substr($arr['summary'],0,$maxlen,'UTF-8');
logger('get_item_elements: message summary length exceeds max_import_size: truncated');
}
$arr['created'] = datetime_convert('UTC','UTC',$x['created']);
$arr['edited'] = datetime_convert('UTC','UTC',$x['edited']);
$arr['expires'] = ((x($x,'expires') && $x['expires'])
? datetime_convert('UTC','UTC',$x['expires'])
: NULL_DATE);
$arr['commented'] = ((x($x,'commented') && $x['commented'])
? datetime_convert('UTC','UTC',$x['commented'])
: $arr['created']);
$arr['comments_closed'] = ((x($x,'comments_closed') && $x['comments_closed'])
? datetime_convert('UTC','UTC',$x['comments_closed'])
: NULL_DATE);
$arr['title'] = (($x['title']) ? htmlspecialchars($x['title'], ENT_COMPAT,'UTF-8',false) : '');
if(mb_strlen($arr['title']) > 255)
$arr['title'] = mb_substr($arr['title'],0,255);
$arr['uuid'] = (($x['uuid']) ? htmlspecialchars($x['uuid'], ENT_COMPAT,'UTF-8',false) : '');
$arr['app'] = (($x['app']) ? htmlspecialchars($x['app'], ENT_COMPAT,'UTF-8',false) : '');
$arr['mid'] = (($x['message_id']) ? htmlspecialchars($x['message_id'], ENT_COMPAT,'UTF-8',false) : '');
$arr['parent_mid'] = (($x['message_top']) ? htmlspecialchars($x['message_top'], ENT_COMPAT,'UTF-8',false) : '');
$arr['thr_parent'] = (($x['message_parent']) ? htmlspecialchars($x['message_parent'], ENT_COMPAT,'UTF-8',false) : '');
$arr['approved'] = (($x['approved']) ? htmlspecialchars($x['approved'], ENT_COMPAT,'UTF-8',false) : '');
$arr['plink'] = (($x['permalink']) ? htmlspecialchars($x['permalink'], ENT_COMPAT,'UTF-8',false) : '');
$arr['location'] = (($x['location']) ? htmlspecialchars($x['location'], ENT_COMPAT,'UTF-8',false) : '');
$arr['verb'] = (($x['verb']) ? htmlspecialchars($x['verb'], ENT_COMPAT,'UTF-8',false) : '');
$arr['mimetype'] = (($x['mimetype']) ? htmlspecialchars($x['mimetype'], ENT_COMPAT,'UTF-8',false) : '');
$arr['obj_type'] = (($x['object_type']) ? htmlspecialchars($x['object_type'], ENT_COMPAT,'UTF-8',false) : '');
$arr['tgt_type'] = (($x['target_type']) ? htmlspecialchars($x['target_type'], ENT_COMPAT,'UTF-8',false) : '');
if ($x['longlat']) {
$coordinates = explode(' ', $x['longlat']);
if (count($coordinates) > 1) {
$arr['lat'] = floatval($coordinates[0]);
$arr['lon'] = floatval($coordinates[1]);
}
}
// convert AS1 namespaced elements to AS-JSONLD
$arr['verb'] = Activity::activity_mapper($arr['verb']);
$arr['obj_type'] = Activity::activity_obj_mapper($arr['obj_type'], $mirror);
$arr['tgt_type'] = Activity::activity_obj_mapper($arr['tgt_type'], $mirror);
$arr['comment_policy'] = (($x['comment_scope']) ? htmlspecialchars($x['comment_scope'], ENT_COMPAT,'UTF-8',false) : 'contacts');
$arr['sig'] = (($x['signature']) ? htmlspecialchars($x['signature'], ENT_COMPAT,'UTF-8',false) : '');
// fix old-style signatures imported from hubzilla
if($arr['sig'] && (! strpos($arr['sig'],'.'))) {
$arr['sig'] = 'sha256.' . $arr['sig'];
}
$arr['obj'] = activity_sanitise($x['object']);
if($arr['obj'] && is_array($arr['obj']) && array_key_exists('asld',$arr['obj'])) {
$arr['obj'] = $arr['obj']['asld'];
}
$arr['target'] = isset($x['target']) ? activity_sanitise($x['target']) : '';
if($arr['target'] && is_array($arr['target']) && array_key_exists('asld',$arr['target'])) {
$arr['target'] = $arr['target']['asld'];
}
$arr['attach'] = activity_sanitise($x['attach']);
$arr['replyto'] = activity_sanitise($x['replyto']);
$arr['term'] = isset($x['tags']) ? decode_tags($x['tags']) : [];
$arr['iconfig'] = decode_item_meta($x['meta']);
$arr['item_private'] = 0;
$arr['item_flags'] = 0;
if(array_key_exists('flags',$x)) {
if(in_array('consensus',$x['flags']))
$arr['item_consensus'] = 1;
if(in_array('deleted',$x['flags']))
$arr['item_deleted'] = 1;
if(in_array('notshown',$x['flags']))
$arr['item_notshown'] = 1;
if(in_array('obscured',$x['flags']))
$arr['item_obscured'] = 1;
// hidden item are no longer propagated - notshown may be a suitable alternative
if(in_array('hidden',$x['flags']))
$arr['item_hidden'] = 1;
if(in_array('private',$x['flags']))
$arr['item_private'] = 1;
if(in_array('direct',$x['flags']))
$arr['item_private'] = 2;
}
// Here's the deal - the site might be down or whatever but if there's a new person you've never
// seen before sending stuff to your stream, we MUST be able to look them up and import their data from their
// hub and verify that they are legit - or else we're going to toss the post. We only need to do this
// once, and after that your hub knows them. Sure some info is in the post, but it's only a transit identifier
// and not enough info to be able to look you up from your hash - which is the only thing stored with the post.
$xchan_hash = import_author_xchan($x['author']);
if($xchan_hash)
$arr['author_xchan'] = $xchan_hash;
else
return [];
$xchan_hash = import_author_xchan($x['owner']);
if($xchan_hash) {
$arr['owner_xchan'] = $xchan_hash;
}
else {
return [];
}
// Check signature on the body text received.
// This presents an issue that we aren't verifying the text that is actually displayed
// on this site. We are however verifying the received text was exactly as received.
// We have every right to strip content that poses a security risk. You are welcome to
// create a plugin to verify the content after filtering if this offends you.
if($arr['sig']) {
// check the supplied signature against the supplied content.
// Note that we will purify the content which could change it.
$r = q("select xchan_pubkey from xchan where xchan_hash = '%s' limit 1",
dbesc($arr['author_xchan'])
);
if($r) {
if($r[0]['xchan_pubkey']) {
if(Libzot::verify($x['body'],$arr['sig'],$r[0]['xchan_pubkey'])) {
$arr['item_verified'] = 1;
}
else {
logger('get_item_elements: message verification failed.');
}
}
else {
// If we don't have a public key, strip the signature, so that it won't show as invalid.
// This won't happen in normal use, but could happen if import_author_xchan()
// failed to load the zot-info packet due to a server failure and had
// to create an alternate xchan with network 'unknown'
unset($arr['sig']);
}
}
}
// Strip old-style hubzilla bookmarks
// Do this after signature verification
if (str_contains($x['body'], "#^[")) {
$x['body'] = str_replace("#^[","[",$x['body']);
}
// if the input is markdown, remove one level of html escaping.
// It will be re-applied in item_store() and/or item_store_update().
// Do this after signature checking as the original signature
// was generated on the escaped content.
if ($arr['mimetype'] === 'text/markdown') {
$arr['summary'] = MarkdownSoap::unescape($arr['summary']);
$arr['body'] = MarkdownSoap::unescape($arr['body']);
}
if ($mirror) {
// extended export encoding
$arr['revision'] = $x['revision'];
$arr['allow_cid'] = $x['allow_cid'];
$arr['allow_gid'] = $x['allow_gid'];
$arr['deny_cid'] = $x['deny_cid'];
$arr['deny_gid'] = $x['deny_gid'];
$arr['layout_mid'] = $x['layout_mid'];
$arr['postopts'] = $x['postopts'];
$arr['resource_id'] = $x['resource_id'];
$arr['resource_type'] = $x['resource_type'];
$arr['item_origin'] = intval($x['item_origin']);
$arr['item_unseen'] = intval($x['item_unseen']);
$arr['item_starred'] = intval($x['item_starred']);
$arr['item_uplink'] = intval($x['item_uplink']);
$arr['item_consensus'] = intval($x['item_consensus']);
$arr['item_wall'] = intval($x['item_wall']);
$arr['item_thread_top'] = intval($x['item_thread_top']);
$arr['item_notshown'] = intval($x['item_notshown']);
$arr['item_nsfw'] = intval($x['item_nsfw']);
// local only $arr['item_relay'] = $x['item_relay'];
$arr['item_mentionsme'] = intval($x['item_mentionsme']);
$arr['item_nocomment'] = intval($x['item_nocomment']);
$arr['item_obscured'] = intval($x['item_obscured']);
// local only $arr['item_verified'] = $x['item_verified'];
$arr['item_retained'] = intval($x['item_retained']);
$arr['item_rss'] = intval($x['item_rss']);
$arr['item_deleted'] = intval($x['item_deleted']);
$arr['item_type'] = intval($x['item_type']);
$arr['item_hidden'] = intval($x['item_hidden']);
$arr['item_unpublished'] = intval($x['item_unpublished']);
$arr['item_delayed'] = intval($x['item_delayed']);
$arr['item_pending_remove'] = intval($x['item_pending_remove']);
$arr['item_blocked'] = intval($x['item_blocked']);
$arr['item_restrict'] = isset($x['item_restrict']) ? intval($x['item_restrict']) : 0;
$arr['item_flags'] = isset($x['item_flags']) ? intval($x['item_flags']) : 0;
}
return $arr;
}
function import_author_xchan($x) {
if(! $x) {
return false;
}
$arr = [
'xchan' => $x,
'xchan_hash' => ''
];
/**
* @hooks import_author_xchan
* Called when looking up an author of a post by xchan_hash to ensure they have an xchan record on our site.
* * \e array \b xchan
* * \e string \b xchan_hash - The returned value
*/
Hook::call('import_author_xchan', $arr);
if($arr['xchan_hash'])
return $arr['xchan_hash'];
$y = false;
if((! array_key_exists('network', $x)) || in_array($x['network'], ['nomad', 'zot6'])) {
$y = Libzot::import_author_zot($x);
}
// if we were told that it's a zot connection, don't probe/import anything else
if(array_key_exists('network', $x) && in_array($x['network'], ['nomad', 'zot6'])) {
return $y;
}
if(! $y) {
$y = import_author_activitypub($x);
}
if(! $y) {
$y = import_author_unknown($x);
}
return($y);
}
function import_author_activitypub($x) {
if(! $x['url'])
return false;
// let somebody upgrade from an 'unknown' connection which has no xchan_addr and resolve issues with identities from multiple protocols using the same url
$r = q("select xchan_hash, xchan_url, xchan_network, xchan_name, xchan_photo_s from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_id_url = '%s' and hubloc_deleted = 0",
dbesc($x['url'])
);
if(! $r) {
$r = q("select xchan_hash, xchan_url, xchan_network, xchan_name, xchan_photo_s from xchan where xchan_hash = '%s' ",
dbesc($x['url'])
);
}
if($r) {
$ptr = null;
foreach($r as $rv) {
if (str_contains($rv['xchan_network'], 'zot') || str_contains($rv['xchan_network'], 'nomad')) {
$ptr = $rv;
}
}
if(! $ptr) {
$ptr = $r[0];
}
logger('in_cache: ' . $ptr['xchan_name'], LOGGER_DATA);
return $ptr['xchan_hash'];
}
$z = discover_resource($x['url'], verify: false);
if($z) {
$r = q("select xchan_hash, xchan_url, xchan_network, xchan_name, xchan_photo_s from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_id_url = '%s' and hubloc_deleted = 0",
dbesc($x['url'])
);
if(! $r) {
$r = q("select xchan_hash, xchan_url, xchan_name, xchan_photo_s from xchan where xchan_hash = '%s' ",
dbesc($x['url'])
);
}
if($r) {
foreach($r as $rv) {
if (str_contains($rv['xchan_network'], 'zot')) {
return $rv['xchan_hash'];
}
}
return $r[0]['xchan_hash'];
}
}
return false;
}
function import_author_unknown($x) {
$arr = [
'author' => $x,
'result' => false
];
/**
* @hooks import_author
* * \e array \b author
* * \e boolean|string \b result - Return value, default false
*/
Hook::call('import_author', $arr);
if($arr['result'])
return $arr['result'];
if(! $x['url'])
return false;
$r = q("select xchan_hash from xchan where xchan_network = 'unknown' and xchan_url = '%s' limit 1",
dbesc($x['url'])
);
if($r) {
logger('In cache' , LOGGER_DEBUG);
return $r[0]['xchan_hash'];
}
$name = trim($x['name']);
$r = xchan_store_lowlevel(
[
'xchan_hash' => $x['url'],
'xchan_guid' => $x['url'],
'xchan_url' => $x['url'],
'xchan_updated' => datetime_convert(),
'xchan_name' => (($name) ?: t('(Unknown)')),
'xchan_name_date' => datetime_convert(),
'xchan_network' => 'unknown'
]
);
if($r && $x['photo']) {
$photos = import_remote_xchan_photo($x['photo']['src'],$x['url']);
if($photos) {
$r = q("update xchan set xchan_updated = '%s', xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s' and xchan_network = 'unknown'",
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
dbesc($photos[3]),
dbesc($x['url'])
);
if($r)
return $x['url'];
}
}
return false;
}
function empty_acl($item) {
return $item['allow_cid'] === EMPTY_STR && $item['allow_gid'] === EMPTY_STR && $item['deny_cid'] === EMPTY_STR && $item['deny_gid'] === EMPTY_STR;
}
function encode_item($item,$mirror = false) {
$x = [];
$x['type'] = 'activity';
$x['encoding'] = 'zot';
// If we're trying to back up an item so that it's recoverable or for export/imprt,
// add all the attributes we need to recover it
if($mirror) {
$x['id'] = $item['id'];
$x['parent'] = $item['parent'];
$x['uid'] = $item['uid'];
$x['allow_cid'] = $item['allow_cid'];
$x['allow_gid'] = $item['allow_gid'];
$x['deny_cid'] = $item['deny_cid'];
$x['deny_gid'] = $item['deny_gid'];
$x['revision'] = $item['revision'];
$x['layout_mid'] = $item['layout_mid'];
$x['postopts'] = $item['postopts'];
$x['resource_id'] = $item['resource_id'];
$x['resource_type'] = $item['resource_type'];
$x['attach'] = $item['attach'];
$x['item_origin'] = $item['item_origin'];
$x['item_unseen'] = $item['item_unseen'];
$x['item_starred'] = $item['item_starred'];
$x['item_uplink'] = $item['item_uplink'];
$x['item_consensus'] = $item['item_consensus'];
$x['item_wall'] = $item['item_wall'];
$x['item_thread_top'] = $item['item_thread_top'];
$x['item_notshown'] = $item['item_notshown'];
$x['item_nsfw'] = $item['item_nsfw'];
$x['item_relay'] = $item['item_relay'];
$x['item_mentionsme'] = $item['item_mentionsme'];
$x['item_nocomment'] = $item['item_nocomment'];
$x['item_obscured'] = $item['item_obscured'];
$x['item_verified'] = $item['item_verified'];
$x['item_retained'] = $item['item_retained'];
$x['item_rss'] = $item['item_rss'];
$x['item_deleted'] = $item['item_deleted'];
$x['item_type'] = $item['item_type'];
$x['item_hidden'] = $item['item_hidden'];
$x['item_unpublished'] = $item['item_unpublished'];
$x['item_delayed'] = $item['item_delayed'];
$x['item_pending_remove'] = $item['item_pending_remove'];
$x['item_blocked'] = $item['item_blocked'];
}
$x['uuid'] = $item['uuid'];
$x['message_id'] = $item['mid'];
$x['approved'] = $item['approved'];
$x['message_top'] = $item['parent_mid'];
$x['message_parent'] = $item['thr_parent'];
$x['created'] = $item['created'];
$x['edited'] = $item['edited'];
// always send 0's over the wire
$x['expires'] = (($item['expires'] === '0001-01-01 00:00:00') ? '0000-00-00 00:00:00' : $item['expires']);
$x['commented'] = $item['commented'];
$x['mimetype'] = $item['mimetype'];
$x['title'] = $item['title'];
$x['summary'] = $item['summary'];
$x['body'] = $item['body'];
$x['app'] = $item['app'];
$x['verb'] = $item['verb'];
$x['object_type'] = $item['obj_type'];
$x['target_type'] = $item['tgt_type'];
$x['permalink'] = $item['plink'];
$x['location'] = $item['location'];
$x['longlat'] = ($item['lat'] || $item['lon']) ? $item['lat'] . ' ' . $item['lon'] : 0.0;
$x['signature'] = $item['sig'];
$x['replyto'] = $item['replyto'];
$x['owner'] = encode_item_xchan($item['owner']);
$x['author'] = encode_item_xchan($item['author']);
if($item['obj'])
$x['object'] = json_decode($item['obj'],true);
if($item['target'])
$x['target'] = json_decode($item['target'],true);
if($item['attach'])
$x['attach'] = json_decode($item['attach'],true);
if($y = encode_item_flags($item))
$x['flags'] = $y;
if($item['comments_closed'] > NULL_DATE) {
$x['comments_closed'] = $item['comments_closed'];
}
$x['comment_scope'] = $item['comment_policy'];
if($item['term'])
$x['tags'] = encode_item_terms($item['term'],$mirror);
if($item['iconfig'])
$x['meta'] = encode_item_meta($item['iconfig'],$mirror);
logger('encode_item: ' . print_r($x,true), LOGGER_DATA);
return $x;
}
/**
* @brief
*
* @param int $scope
* @param boolean $strip (optional) default false
* @return string
*/
function map_scope($scope, $strip = false) {
switch($scope) {
case 0:
return 'self';
case PERMS_PUBLIC:
if($strip)
return '';
return 'public';
case PERMS_NETWORK:
return 'network: red';
case PERMS_AUTHED:
return 'authenticated';
case PERMS_SITE:
return 'site: ' . App::get_hostname();
case PERMS_PENDING:
return 'any connections';
case PERMS_SPECIFIC:
return 'specific';
case PERMS_CONTACTS:
default:
return 'contacts';
}
}
/**
* @brief Returns a descriptive text for a given $scope.
*
* @param string $scope
* @return string translated string describing the scope
*/
function translate_scope($scope) {
if(! $scope || $scope === 'public')
return t('Visible to anybody on the internet.');
if(str_starts_with($scope, 'self'))
return t('Visible to you only.');
if(str_starts_with($scope, 'network:'))
return t('Visible to anybody in this network.');
if(str_starts_with($scope, 'authenticated'))
return t('Visible to anybody authenticated.');
if(str_starts_with($scope, 'site:'))
return sprintf( t('Visible to anybody on %s.'), strip_tags(substr($scope,6)));
if(str_starts_with($scope, 'any connections'))
return t('Visible to all connections.');
if(str_starts_with($scope, 'contacts'))
return t('Visible to approved connections.');
if(str_starts_with($scope, 'specific'))
return t('Visible to specific connections.');
return ''; // This shouldn't happen.
}
/**
* @brief
*
* @param array $xchan
* @return array an associative array
*/
function encode_item_xchan($xchan) {
$ret = [];
$ret['name'] = $xchan['xchan_name'];
$ret['address'] = $xchan['xchan_addr'];
$ret['url'] = $xchan['xchan_url'];
$ret['network'] = $xchan['xchan_network'];
$ret['photo'] = [
'mimetype' => $xchan['xchan_photo_mimetype'],
'src' => $xchan['xchan_photo_m']
];
$ret['id'] = $xchan['xchan_guid'];
$ret['id_sig'] = $xchan['xchan_guid_sig'];
$ret['key'] = $xchan['xchan_pubkey'];
return $ret;
}
function encode_item_terms($terms,$mirror = false) {
$ret = [];
$allowed_export_terms = [TERM_UNKNOWN, TERM_HASHTAG, TERM_MENTION, TERM_CATEGORY, TERM_BOOKMARK, TERM_COMMUNITYTAG, TERM_FORUM];
if($mirror) {
$allowed_export_terms[] = TERM_PCATEGORY;
$allowed_export_terms[] = TERM_FILE;
}
if($terms) {
foreach($terms as $term) {
if(in_array($term['ttype'],$allowed_export_terms))
$ret[] = ['tag' => $term['term'], 'url' => $term['url'], 'type' => termtype($term['ttype'])];
}
}
return $ret;
}
function encode_item_meta($meta,$mirror = false) {
$ret = [];
if($meta) {
foreach($meta as $m) {
if($m['sharing'] || $mirror)
$ret[] = ['family' => $m['cat'], 'key' => $m['k'], 'value' => $m['v'], 'sharing' => intval($m['sharing'])];
}
}
return $ret;
}
function decode_item_meta($meta) {
$ret = [];
if(is_array($meta) && $meta) {
foreach($meta as $m) {
$ret[] = ['cat' => escape_tags($m['family']),'k' => escape_tags($m['key']),'v' => $m['value'],'sharing' => $m['sharing']];
}
}
return $ret;
}
/**
* @brief
*
* @param int $t
* @return string
*/
function termtype($t) {
$types = ['unknown', 'hashtag', 'mention', 'category', 'personal_category', 'file',
'search', 'thing', 'bookmark', 'hierarchy', 'communitytag', 'forum'];
return(($types[$t]) ?: 'unknown');
}
/**
* @brief
*
* @param array $t
* @return array|string empty string or array containing associative arrays with
* * \e string \b term
* * \e string \b url
* * \e int \b type
*/
function decode_tags($t) {
if($t) {
$ret = [];
foreach($t as $x) {
$tag = [];
$tag['term'] = htmlspecialchars($x['tag'], ENT_COMPAT, 'UTF-8', false);
$tag['url'] = htmlspecialchars($x['url'], ENT_COMPAT, 'UTF-8', false);
switch($x['type']) {
case 'hashtag':
$tag['ttype'] = TERM_HASHTAG;
break;
case 'mention':
$tag['ttype'] = TERM_MENTION;
break;
case 'category':
$tag['ttype'] = TERM_CATEGORY;
break;
case 'personal_category':
$tag['ttype'] = TERM_PCATEGORY;
break;
case 'file':
$tag['ttype'] = TERM_FILE;
break;
case 'search':
$tag['ttype'] = TERM_SAVEDSEARCH;
break;
case 'thing':
$tag['ttype'] = TERM_THING;
break;
case 'bookmark':
$tag['ttype'] = TERM_BOOKMARK;
break;
case 'communitytag':
$tag['ttype'] = TERM_COMMUNITYTAG;
break;
case 'forum':
$tag['ttype'] = TERM_FORUM;
break;
default:
case 'unknown':
$tag['ttype'] = TERM_UNKNOWN;
break;
}
$ret[] = $tag;
}
return $ret;
}
return '';
}
function purify_imported_object($obj) {
$ret = null;
if (is_array($obj)) {
foreach ( $obj as $k => $v ) {
if (is_array($v)) {
$ret[$k] = purify_imported_object($v);
}
elseif (is_string($v)) {
$ret[$k] = purify_html($v);
}
}
}
elseif (is_string($obj)) {
$ret = purify_html($obj);
}
return $ret;
}
/**
* @brief Sanitise a potentially complex array.
*
* Walks the array and applies htmlspecialchars to the content unless it is a known HTML element,
* in which case the result is purified
*
* @param array $arr
* @return array|string
*/
function activity_sanitise($arr) {
if($arr) {
if(is_array($arr)) {
$ret = [];
foreach($arr as $k => $x) {
if ($k === 'source' && array_path_exists('source/mediaType',$arr)) {
if (array_path_exists('source/content',$arr) && isset($arr['source']['mediaType']) && in_array($arr['source']['mediaType'], [ 'text/bbcode', 'text/x-multicode' ])) {
// @FIXME multicode
$ret[$k] = [ 'mediaType' => 'text/x-multicode' ];
if (is_string($arr['source']['content'])) {
$ret[$k]['content'] = multicode_purify($arr['source']['content']);
}
if (array_path_exists('source/summary',$arr) && is_string($arr['source']['summary'])) {
$ret[$k]['summary'] = multicode_purify($arr['source']['summary']);
}
continue;
}
}
if (in_array($k, [ 'content', 'summary', 'contentMap', 'summaryMap' ])) {
$ret[$k] = purify_imported_object($x);
continue;
}
if(is_array($x))
$ret[$k] = activity_sanitise($x);
else
$ret[$k] = htmlspecialchars((isset($x) ? $x : ''), ENT_COMPAT, 'UTF-8', false);
}
return $ret;
}
else {
return htmlspecialchars($arr, ENT_COMPAT, 'UTF-8', false);
}
}
return '';
}
/**
* @brief Sanitise a simple linear array.
*
* @param array $arr
* @return array|string
*/
function array_sanitise($arr) {
if($arr) {
$ret = [];
foreach($arr as $x) {
$ret[] = htmlspecialchars($x, ENT_COMPAT,'UTF-8',false);
}
return $ret;
}
return '';
}
function encode_item_flags($item) {
// most of item_flags and item_restrict are local settings which don't apply when transmitted.
// We may need those for the case of syncing other hub locations which you are attached to.
$ret = [];
if(intval($item['item_deleted']))
$ret[] = 'deleted';
if(intval($item['item_hidden']))
$ret[] = 'hidden';
if(intval($item['item_notshown']))
$ret[] = 'notshown';
if(intval($item['item_thread_top']))
$ret[] = 'thread_parent';
if(intval($item['item_nsfw']))
$ret[] = 'nsfw';
if(intval($item['item_consensus']))
$ret[] = 'consensus';
if(intval($item['item_obscured']))
$ret[] = 'obscured';
if(intval($item['item_private']))
$ret[] = 'private';
if(intval($item['item_private']) === 2)
$ret[] = 'direct';
return $ret;
}
// Superceded by Libzotdir::import_directory_profile
// This is probably no longer needed.
function get_profile_elements($profile) {
$arr = [];
$xchan_hash = import_author_xchan($profile['from']);
if($xchan_hash) {
$arr['xprof_hash'] = $xchan_hash;
}
else {
return [];
}
$arr['desc'] = (($profile['title']) ? htmlspecialchars($profile['title'],ENT_COMPAT,'UTF-8',false) : '');
$arr['dob'] = datetime_convert('UTC','UTC',$profile['birthday'],'Y-m-d');
$arr['age'] = (($profile['age']) ? intval($profile['age']) : 0);
$arr['gender'] = (($profile['gender']) ? htmlspecialchars($profile['gender'], ENT_COMPAT,'UTF-8',false) : '');
$arr['marital'] = (($profile['marital']) ? htmlspecialchars($profile['marital'], ENT_COMPAT,'UTF-8',false) : '');
$arr['sexual'] = (($profile['sexual']) ? htmlspecialchars($profile['sexual'], ENT_COMPAT,'UTF-8',false) : '');
$arr['locale'] = (($profile['locale']) ? htmlspecialchars($profile['locale'], ENT_COMPAT,'UTF-8',false) : '');
$arr['region'] = (($profile['region']) ? htmlspecialchars($profile['region'], ENT_COMPAT,'UTF-8',false) : '');
$arr['postcode'] = (($profile['postcode']) ? htmlspecialchars($profile['postcode'], ENT_COMPAT,'UTF-8',false) : '');
$arr['country'] = (($profile['country']) ? htmlspecialchars($profile['country'], ENT_COMPAT,'UTF-8',false) : '');
$arr['keywords'] = (($profile['keywords'] && is_array($profile['keywords'])) ? array_sanitise($profile['keywords']) : []);
return $arr;
}
/**
* @brief Signs an item body.
*
* @param[in,out] array $item
*/
function item_sign(&$item) {
if(array_key_exists('sig',$item) && $item['sig'])
return;
$r = q("select channel_prvkey from channel where channel_id = %d and channel_hash = '%s' ",
intval($item['uid']),
dbesc($item['author_xchan'])
);
if(! $r)
return;
$item['sig'] = Libzot::sign($item['body'], $r[0]['channel_prvkey']);
$item['item_verified'] = 1;
}
// packs json data for storage.
// if it is a string, check if it is already json encoded.
// Otherwise, json encode it
// If it is an array, sanitise it and then json_encode it.
function item_json_encapsulate($arr,$k) {
$retval = null;
if (isset($arr[$k])) {
if (is_string($arr[$k])) {
// determine if it is json encoded already
$test = json_decode($arr[$k]);
// assume it is json encoded already
$retval = $arr[$k];
if ($test === NULL) {
$retval = json_encode($arr[$k], JSON_UNESCAPED_SLASHES);
}
}
else {
activity_sanitise($arr[$k]);
$retval = json_encode($arr[$k], JSON_UNESCAPED_SLASHES);
}
}
return $retval;
}
/**
* @brief Stores an item type record.
*
* @param array $arr
* @param boolean $deliver (optional) default true
*
* @return array
* * \e boolean \b success
* * \e int \b item_id
*/
function item_store($arr, $deliver = true, $addAndSync = true) {
$d = [
'item' => $arr,
];
/**
* @hooks item_store_before
* Called when item_store() stores a record of type item.
* * \e array \b item
*/
Hook::call('item_store_before', $d);
$arr = $d['item'];
$ret = ['success' => false, 'item_id' => 0];
if(array_key_exists('cancel',$arr) && $arr['cancel']) {
logger('cancelled by plugin');
return $ret;
}
if(! $arr['uid']) {
logger('item_store: no uid');
$ret['message'] = 'No uid.';
return $ret;
}
//$uplinked_comment = false;
// If a page layout is provided, ensure it exists and belongs to us.
if(array_key_exists('layout_mid',$arr) && $arr['layout_mid']) {
$l = q("select item_type from item where mid = '%s' and uid = %d limit 1",
dbesc($arr['layout_mid']),
intval($arr['uid'])
);
if((! $l) || ($l[0]['item_type'] != ITEM_TYPE_PDL))
unset($arr['layout_mid']);
}
// Don't let anybody set these, either intentionally or accidentally
if(array_key_exists('id',$arr))
unset($arr['id']);
if(array_key_exists('parent',$arr))
unset($arr['parent']);
$arr['mimetype'] = ((x($arr,'mimetype')) ? notags(trim($arr['mimetype'])) : 'text/x-multicode');
$arr['title'] = ((array_key_exists('title',$arr) && strlen($arr['title'])) ? trim(escape_tags($arr['title'])) : '');
$arr['summary'] = ((array_key_exists('summary',$arr) && strlen($arr['summary'])) ? trim($arr['summary']) : '');
$arr['body'] = ((array_key_exists('body',$arr) && strlen($arr['body'])) ? trim($arr['body']) : '');
$arr['allow_cid'] = ((x($arr,'allow_cid')) ? trim($arr['allow_cid']) : '');
$arr['allow_gid'] = ((x($arr,'allow_gid')) ? trim($arr['allow_gid']) : '');
$arr['deny_cid'] = ((x($arr,'deny_cid')) ? trim($arr['deny_cid']) : '');
$arr['deny_gid'] = ((x($arr,'deny_gid')) ? trim($arr['deny_gid']) : '');
$arr['postopts'] = ((x($arr,'postopts')) ? trim($arr['postopts']) : '');
$arr['uuid'] = ((x($arr,'uuid')) ? trim($arr['uuid']) : '');
$arr['approved'] = ((x($arr,'approved')) ? trim($arr['approved']) : '');
$arr['item_private'] = ((x($arr,'item_private')) ? intval($arr['item_private']) : 0 );
$arr['item_wall'] = ((x($arr,'item_wall')) ? intval($arr['item_wall']) : 0 );
$arr['item_type'] = ((x($arr,'item_type')) ? intval($arr['item_type']) : 0 );
$arr['item_verified'] = ((x($arr,'item_verified')) ? intval($arr['item_verified']) : 0 );
// obsolete, but needed so as not to throw not-null constraints on some database driveres
$arr['item_flags'] = ((x($arr,'item_flags')) ? intval($arr['item_flags']) : 0 );
$languagetext = prepare_text($arr['body'],((isset($arr['mimetype'])) ? $arr['mimetype'] : 'text/x-multicode'));
$languagetext = html2plain((isset($arr['title']) && $arr['title']) ? $arr['title'] . ' ' . $languagetext : $languagetext);
$detector = new LanguageDetect();
$arr['lang'] = $detector->detect($languagetext);
// apply the input filter here
$arr['summary'] = trim(z_input_filter($arr['summary'],$arr['mimetype']));
$arr['body'] = trim(z_input_filter($arr['body'],$arr['mimetype']));
item_sign($arr);
if(! array_key_exists('sig',$arr))
$arr['sig'] = '';
$allowed_languages = get_pconfig($arr['uid'],'system','allowed_languages');
if((is_array($allowed_languages)) && ($arr['lang']) && (! array_key_exists($arr['lang'],$allowed_languages))) {
$translate = [
'item' => $arr,
'from' => $arr['lang'],
'to' => $allowed_languages,
'translated' => false
];
/**
* @hooks item_translate
* Called from item_store and item_store_update after the post language has been autodetected.
* * \e array \b item
* * \e string \b from
* * \e string \b to
* * \e boolean \b translated
*/
Hook::call('item_translate', $translate);
if((! $translate['translated']) && (intval(get_pconfig($arr['uid'],'system','reject_disallowed_languages')))) {
logger('language ' . $arr['lang'] . ' not accepted for uid ' . $arr['uid']);
$ret['message'] = 'language not accepted';
return $ret;
}
$arr = $translate['item'];
}
if(isset($arr['obj'])) {
$arr['obj'] = item_json_encapsulate($arr,'obj');
}
if(isset($arr['target'])) {
$arr['target'] = item_json_encapsulate($arr,'target');
}
if(isset($arr['attach'])) {
$arr['attach'] = item_json_encapsulate($arr,'attach');
}
$arr['aid'] = ((x($arr,'aid')) ? intval($arr['aid']) : 0);
$arr['mid'] = ((x($arr,'mid')) ? notags(trim($arr['mid'])) : random_string());
$arr['revision'] = ((x($arr,'revision') && intval($arr['revision']) > 0) ? intval($arr['revision']) : 0);
$arr['author_xchan'] = ((x($arr,'author_xchan')) ? notags(trim($arr['author_xchan'])) : '');
$arr['owner_xchan'] = ((x($arr,'owner_xchan')) ? notags(trim($arr['owner_xchan'])) : '');
$arr['created'] = ((x($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());
$arr['expires'] = ((x($arr,'expires') !== false) ? datetime_convert('UTC','UTC',$arr['expires']) : NULL_DATE);
$arr['commented'] = ((x($arr,'commented') !== false) ? datetime_convert('UTC','UTC',$arr['commented']) : datetime_convert());
$arr['comments_closed'] = ((x($arr,'comments_closed') !== false) ? datetime_convert('UTC','UTC',$arr['comments_closed']) : NULL_DATE);
$arr['html'] = ((array_key_exists('html',$arr)) ? $arr['html'] : '');
if($deliver) {
$arr['received'] = datetime_convert();
$arr['changed'] = datetime_convert();
}
else {
// When deliver flag is false, we are *probably* performing an import or bulk migration.
// If one updates the changed timestamp it will be made available to zotfeed and delivery
// will still take place through backdoor methods. Since these fields are rarely used
// otherwise, just preserve the original timestamp.
$arr['received'] = ((x($arr,'received') !== false) ? datetime_convert('UTC','UTC',$arr['received']) : datetime_convert());
$arr['changed'] = ((x($arr,'changed') !== false) ? datetime_convert('UTC','UTC',$arr['changed']) : datetime_convert());
}
$arr['location'] = ((x($arr,'location')) ? notags(trim($arr['location'])) : '');
$arr['lat'] = ((x($arr, 'lat')) ? floatval($arr['lat']) : 0.0);
$arr['lon'] = ((x($arr, 'lon')) ? floatval($arr['lon']) : 0.0);
$arr['parent_mid'] = ((x($arr,'parent_mid')) ? notags(trim($arr['parent_mid'])) : '');
$arr['thr_parent'] = ((x($arr,'thr_parent')) ? notags(trim($arr['thr_parent'])) : $arr['parent_mid']);
$arr['verb'] = ((x($arr,'verb')) ? notags(trim($arr['verb'])) : ACTIVITY_POST);
$arr['obj_type'] = ((x($arr,'obj_type')) ? notags(trim($arr['obj_type'])) : ACTIVITY_OBJ_NOTE);
$arr['obj'] = ((x($arr,'obj')) ? trim($arr['obj']) : '');
$arr['tgt_type'] = ((x($arr,'tgt_type')) ? notags(trim($arr['tgt_type'])) : '');
$arr['target'] = ((x($arr,'target')) ? trim($arr['target']) : '');
$arr['plink'] = ((x($arr,'plink')) ? notags(trim($arr['plink'])) : '');
$arr['attach'] = ((x($arr,'attach')) ? notags(trim($arr['attach'])) : '');
$arr['app'] = ((x($arr,'app')) ? notags(trim($arr['app'])) : '');
$arr['replyto'] = ((x($arr,'replyto')) ? serialise($arr['replyto']) : '');
// No longer used but needs to be set to something or the database will complain.
$arr['route'] = '';
$arr['public_policy'] = '';
$arr['comment_policy'] = ((x($arr,'comment_policy')) ? notags(trim($arr['comment_policy'])) : 'contacts' );
$arr['item_unseen'] = ((array_key_exists('item_unseen',$arr)) ? intval($arr['item_unseen']) : 1 );
$arr['item_restrict'] = ((array_key_exists('item_restrict',$arr)) ? intval($arr['item_restrict']) : 0 );
if((! array_key_exists('item_nocomment',$arr)) && ($arr['comment_policy'] == 'none'))
$arr['item_nocomment'] = 1;
// handle time travelers
// Allow a bit of fudge in case somebody just has a slightly slow/fast clock
$d1 = new DateTime('now +10 minutes', new DateTimeZone('UTC'));
$d2 = new DateTime($arr['created'] . '+00:00');
if($d2 > $d1)
$arr['item_delayed'] = 1;
$arr['llink'] = z_root() . '/display/?mid=' . gen_link_id($arr['mid']);
if (! $arr['plink']) {
$arr['plink'] = $arr['llink'];
}
if($arr['parent_mid'] === $arr['mid']) {
$parent_id = 0;
$parent_deleted = 0;
$allow_cid = $arr['allow_cid'];
$allow_gid = $arr['allow_gid'];
$deny_cid = $arr['deny_cid'];
$deny_gid = $arr['deny_gid'];
$comments_closed = $arr['comments_closed'];
$arr['item_thread_top'] = 1;
$arr['item_level'] = 0;
}
else {
// find the parent and snarf the item id and ACL's
// and anything else we need to inherit
$r = q("SELECT item_level FROM item WHERE (mid = '%s' OR mid = '%s') AND uid = %d ORDER BY id ASC LIMIT 1",
dbesc($arr['thr_parent']),
dbesc(reverse_activity_mid($arr['thr_parent'])),
intval($arr['uid'])
);
if($r) {
$arr['item_level'] = intval($r[0]['item_level']) + 1;
}
else {
$arr['item_level'] = 1;
}
$r = q("SELECT * FROM item WHERE (mid = '%s' OR mid = '%s') AND uid = %d ORDER BY id ASC LIMIT 1",
dbesc($arr['parent_mid']),
dbesc(reverse_activity_mid($arr['parent_mid'])),
intval($arr['uid'])
);
// We may have this parent_mid without a token, so try that if we find a token
if (! $r) {
if (strpos($arr['parent_mid'],'token=')) {
$r = q("SELECT * FROM item WHERE mid = '%s' AND uid = %d ORDER BY id ASC LIMIT 1",
dbesc(substr($arr['parent_mid'],0,strpos($arr['parent_mid'],'?'))),
intval($arr['uid'])
);
if ($r) {
$arr['parent_mid'] = $arr['thr_parent'] = substr($arr['parent_mid'],0,strpos($arr['parent_mid'],'?'));
}
}
}
if ($r) {
$parent_item = array_shift($r);
// in case item_store was killed before the parent's parent attribute got set,
// set it now. This happens with some regularity on Dreamhost. This will keep
// us from getting notifications for threads that exist but which we can't see.
if(($parent_item['mid'] === $parent_item['parent_mid']) && (! intval($parent_item['parent']))) {
q("update item set parent = id where id = %d",
intval($parent_item['id'])
);
}
if(comments_are_now_closed($parent_item)) {
logger('item_store: comments closed');
$ret['message'] = 'Comments closed.';
return $ret;
}
if(($arr['obj_type'] == ACTIVITY_OBJ_NOTE) && (! $arr['obj']))
$arr['obj_type'] = ACTIVITY_OBJ_COMMENT;
// is the new message multi-level threaded?
// even though we don't support it now, preserve the info
// and re-attach to the conversation parent.
if($parent_item['mid'] != $parent_item['parent_mid']) {
$arr['parent_mid'] = $parent_item['parent_mid'];
$z = q("SELECT * FROM item WHERE mid = '%s' AND parent_mid = '%s' AND uid = %d
ORDER BY id ASC LIMIT 1",
dbesc($parent_item['parent_mid']),
dbesc($parent_item['parent_mid']),
intval($arr['uid'])
);
if($z && count($z))
$r = $z;
}
$parent_id = $parent_item['id'];
$parent_deleted = $parent_item['item_deleted'];
// item_restrict indicates an activitypub reply with a different
// delivery algorithm than the "parent-relay" or inherited privacy mode
if(! (intval($arr['item_restrict']) & 1)) {
$allow_cid = $parent_item['allow_cid'];
$allow_gid = $parent_item['allow_gid'];
$deny_cid = $parent_item['deny_cid'];
$deny_gid = $parent_item['deny_gid'];
}
$comments_closed = $parent_item['comments_closed'];
if(intval($parent_item['item_wall']))
$arr['item_wall'] = 1;
// An uplinked comment might arrive with a downstream owner.
// Fix it.
if($parent_item['owner_xchan'] !== $arr['owner_xchan']) {
$arr['owner_xchan'] = $parent_item['owner_xchan'];
// $uplinked_comment = true;
}
// if the parent is private and the child is not, force privacy for the entire conversation
// if the child is private, leave it alone regardless of the parent privacy state
if(intval($parent_item['item_private']) && (! intval($arr['item_private']))) {
$arr['item_private'] = $parent_item['item_private'];
}
// Edge case. We host a public forum that was originally posted privately.
// The original author commented, but as this is a comment, the permissions
// weren't fixed up and will still show the comment as private unless we fix it here.
if(intval($parent_item['item_uplink']) && (! $parent_item['item_private']))
$arr['item_private'] = 0;
if(in_array($arr['obj_type'], ['Note','Answer']) && $parent_item['obj_type'] === 'Question' && $parent_item['item_wall']) {
Activity::update_poll($parent_item, $arr);
}
}
else {
logger('item_store: item parent was not found - ignoring item');
$ret['message'] = 'parent not found.';
return $ret;
}
}
if($parent_deleted)
$arr['item_deleted'] = 1;
$r = q("SELECT id FROM item WHERE mid = '%s' AND uid = %d and revision = %d LIMIT 1",
dbesc($arr['mid']),
intval($arr['uid']),
intval($arr['revision'])
);
if($r) {
logger('duplicate item ignored. ' . print_r($arr,true));
$ret['message'] = 'duplicate post.';
return $ret;
}
if (LibBlock::fetch_by_entity($arr['uid'],$arr['owner_xchan']) || LibBlock::fetch_by_entity($arr['uid'],$arr['author_xchan'])) {
logger('Post cancelled by block rule.');
$ret['message'] = 'cancelled.';
return $ret;
}
/**
* @hooks item_store
* Called when item_store() stores a record of type item.
*/
Hook::call('item_store', $arr);
/**
* @hooks post_remote
* Called when an activity arrives from another site.
* This hook remains for backward compatibility.
*/
Hook::call('post_remote', $arr);
if(x($arr, 'cancel')) {
logger('Post cancelled by plugin.');
$ret['message'] = 'cancelled.';
return $ret;
}
// pull out all the taxonomy stuff for separate storage
$terms = null;
if(array_key_exists('term',$arr)) {
$terms = $arr['term'];
unset($arr['term']);
}
$meta = null;
if(array_key_exists('iconfig',$arr)) {
$meta = $arr['iconfig'];
unset($arr['iconfig']);
}
$private = intval($arr['item_private']);
if (! $private) {
if (strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid)) {
$private = 1;
}
}
$arr['parent'] = $parent_id;
$arr['allow_cid'] = $allow_cid;
$arr['allow_gid'] = $allow_gid;
$arr['deny_cid'] = $deny_cid;
$arr['deny_gid'] = $deny_gid;
$arr['item_private'] = $private;
$arr['comments_closed'] = $comments_closed;
logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
logger('item_store_terms: ' . print_r($terms, true), LOGGER_DATA);
create_table_from_array('item',$arr);
// find the item we just created
$r = q("SELECT * FROM item WHERE mid = '%s' AND uid = %d and revision = %d ORDER BY id ASC ",
dbesc($arr['mid']),
intval($arr['uid']),
intval($arr['revision'])
);
if($r) {
// This will give us a fresh copy of what's now in the DB and undo the db escaping,
// which really messes up the notifications
$current_post = $r[0]['id'];
$arr = $r[0];
logger('item_store: created item ' . $current_post, LOGGER_DEBUG);
}
else {
logger('item_store: could not locate stored item');
$ret['message'] = 'unable to retrieve.';
return $ret;
}
if(count($r) > 1) {
logger('item_store: duplicated post occurred. Removing duplicates.');
q("DELETE FROM item WHERE mid = '%s' AND uid = %d AND id != %d ",
$arr['mid'],
intval($arr['uid']),
intval($current_post)
);
}
$arr['id'] = $current_post;
if(! intval($r[0]['parent'])) {
q("update item set parent = id where id = %d",
intval($r[0]['id'])
);
$arr['parent'] = $r[0]['id'];
}
// Store taxonomy
if(($terms) && (is_array($terms))) {
foreach($terms as $t) {
q("insert into term (uid,oid,otype,ttype,term,url)
values(%d,%d,%d,%d,'%s','%s') ",
intval($arr['uid']),
intval($current_post),
intval(TERM_OBJ_POST),
intval($t['ttype']),
dbesc($t['term']),
dbesc($t['url'])
);
}
$arr['term'] = $terms;
}
if($meta) {
foreach($meta as $m) {
set_iconfig($current_post,$m['cat'],$m['k'],$m['v'],$m['sharing']);
}
$arr['iconfig'] = $meta;
}
$ret['item'] = $arr;
/**
* @hooks post_remote_end
* Called after processing a remote post.
*/
Hook::call('post_remote_end', $arr);
item_update_parent_commented($arr);
if((str_contains($arr['body'], '[embed]')) || (str_contains($arr['body'], '[/img]')) || (str_contains($arr['body'], '[/zmg]'))) {
Run::Summon([ 'Cache_embeds', $current_post ]);
}
$ret['success'] = true;
$ret['item_id'] = $current_post;
if ($addAndSync) {
$ret = addToCollectionAndSync($ret);
}
// If _creating_ a deleted item, don't propagate it further or send out notifications.
// We need to store the item details just in case the delete came in before the original post,
// so that we have an item in the DB that's marked deleted and won't store a fresh post
// that isn't aware that we were already told to delete it.
if(($deliver) && (! intval($arr['item_deleted']))) {
send_status_notifications($arr);
tag_deliver($arr['uid'],$current_post);
}
// experimental future use
// if($linkid) {
// $li = [ $ret['item'] ];
// xchan_query($li);
// $sync_item = fetch_post_tags($li);
// Libsync::build_link_packet($arr['uid'],[ 'item' => [ encode_item($sync_item[0],true) ] ]);
// }
return $ret;
}
function addToCollectionAndSync($ret)
{
if (!$ret['success']) {
return $ret;
}
$channel = Channel::from_id($ret['item']['uid']);
if ($channel && $channel['channel_hash'] === $ret['item']['owner_xchan']) {
$items = [$ret['item']];
if ((int)$items[0]['item_blocked'] === ITEM_MODERATED) {
return $ret;
}
xchan_query($items);
$items = fetch_post_tags($items);
$sync_items = [];
$sync_items[] = encode_item($items[0], true);
if (!in_array($ret['item']['verb'], ['Add', 'Remove'])) {
$newObj = array_merge(Activity::ap_context(), Activity::encode_activity($items[0]));
$newObj['proof'] = (new JcsEddsa2022())->sign($newObj, $channel);
$approval = Activity::addToCollection($channel,
$newObj,
$ret['item']['parent_mid'], $ret['item'], deliver: false);
if ($approval['success']) {
$ret['approval_id'] = $approval['item_id'];
$ret['approval'] = $approval['activity'];
$addItems = [$approval['activity']];
xchan_query($addItems);
$addItems = fetch_post_tags($addItems);
$sync_items[] = encode_item($addItems[0], true);
}
}
$resource_type = $ret['item']['resource_type'];
if ($resource_type === 'event') {
$z = q(
"select * from event where event_hash = '%s' and uid = %d limit 1",
dbesc($ret['item']['resource_id']),
intval($channel['channel_id'])
);
if ($z) {
Libsync::build_sync_packet($channel['channel_id'], ['event_item' => $sync_items, 'event' => $z]);
}
}
elseif ($resource_type === 'photo') {
// reserved for future use, currently handled in the photo upload workflow
}
else {
Libsync::build_sync_packet($ret['item']['uid'], ['item' => $sync_items]);
}
}
return $ret;
}
/**
* @brief Update a stored item.
*
* @param array $arr an item
* @param boolean $deliver (optional) default true
* @return array
*/
function item_store_update($arr, $deliver = true, $addAndSync = true) {
$d = [
'item' => $arr,
];
/**
* @hooks item_store_update_before
* Called when item_store_update() is called to update a stored item. It
* overwrites the function's parameters $arr
* * \e array \b item
*/
Hook::call('item_store_update_before', $d);
$arr = $d['item'];
$ret = ['success' => false, 'item_id' => 0];
if(array_key_exists('cancel',$arr) && $arr['cancel']) {
logger('cancelled by plugin');
return $ret;
}
if(! intval($arr['uid'])) {
logger('no uid');
$ret['message'] = 'no uid.';
return $ret;
}
if(! intval($arr['id'])) {
logger('no id');
$ret['message'] = 'no id.';
return $ret;
}
$orig_post_id = $arr['id'];
$uid = $arr['uid'];
$orig = q("select * from item where id = %d and uid = %d limit 1",
intval($orig_post_id),
intval($uid)
);
if(! $orig) {
logger('Original post not found: ' . $orig_post_id);
$ret['message'] = 'no original';
return $ret;
}
// override the unseen flag with the original
$arr['item_unseen'] = $orig[0]['item_unseen'];
$arr['title'] = ((array_key_exists('title',$arr) && strlen($arr['title'])) ? trim(escape_tags($arr['title'])) : '');
$arr['body'] = ((array_key_exists('body',$arr) && strlen($arr['body'])) ? trim($arr['body']) : '');
$arr['html'] = ((array_key_exists('html',$arr) && strlen($arr['html'])) ? trim($arr['html']) : '');
if(array_key_exists('edit',$arr))
unset($arr['edit']);
$arr['mimetype'] = ((x($arr,'mimetype')) ? notags(trim($arr['mimetype'])) : 'text/x-multicode');
$languagetext = prepare_text($arr['body'],((isset($arr['mimetype'])) ? $arr['mimetype'] : 'text/x-multicode'));
$languagetext = html2plain((isset($arr['title']) && $arr['title']) ? $arr['title'] . ' ' . $languagetext : $languagetext);
$detector = new LanguageDetect();
$arr['lang'] = $detector->detect($languagetext);
// apply the input filter here
$arr['summary'] = trim(z_input_filter($arr['summary'],$arr['mimetype']));
$arr['body'] = trim(z_input_filter($arr['body'],$arr['mimetype']));
item_sign($arr);
$allowed_languages = get_pconfig($arr['uid'],'system','allowed_languages');
if((is_array($allowed_languages)) && ($arr['lang']) && (! array_key_exists($arr['lang'],$allowed_languages))) {
$translate = [
'item' => $arr,
'from' => $arr['lang'],
'to' => $allowed_languages,
'translated' => false
];
/**
* @hooks item_translate
* Called from item_store() and item_store_update() after the post language has been autodetected.
* * \e array \b item - returned value
* * \e string \b from
* * \e string \b to
* * \e boolean \b translated - default false, set true if hook translated it and provide it in item
*/
Hook::call('item_translate', $translate);
if((! $translate['translated']) && (intval(get_pconfig($arr['uid'],'system','reject_disallowed_languages')))) {
logger('item_store: language ' . $arr['lang'] . ' not accepted for uid ' . $arr['uid']);
$ret['message'] = 'language not accepted';
return $ret;
}
$arr = $translate['item'];
}
if(isset($arr['obj'])) {
$arr['obj'] = item_json_encapsulate($arr,'obj');
}
if(isset($arr['target'])) {
$arr['target'] = item_json_encapsulate($arr,'target');
}
if(isset($arr['attach'])) {
$arr['attach'] = item_json_encapsulate($arr,'attach');
}
unset($arr['id']);
unset($arr['uid']);
unset($arr['aid']);
unset($arr['uuid']);
unset($arr['mid']);
unset($arr['parent']);
unset($arr['parent_mid']);
unset($arr['author_xchan']);
unset($arr['owner_xchan']);
unset($arr['source_xchan']);
unset($arr['thr_parent']);
unset($arr['llink']);
if (intval($orig[0]['item_unpublished'])) {
$arr['created'] = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
$arr['edited'] = $arr['created'];
$arr['expires'] = ((x($arr,'expires') !== false) ? datetime_convert('UTC','UTC',$arr['expires']) : NULL_DATE);
if(array_key_exists('comments_closed',$arr) && $arr['comments_closed'] > NULL_DATE)
$arr['comments_closed'] = datetime_convert('UTC','UTC',$arr['comments_closed']);
else
$arr['comments_closed'] = NULL_DATE;
$arr['commented'] = $arr['created'];
$arr['received'] = $arr['created'];
$arr['changed'] = $arr['created'];
}
else {
unset($arr['created']);
$arr['expires'] = ((x($arr,'expires') !== false) ? datetime_convert('UTC','UTC',$arr['expires']) : $orig[0]['expires']);
if(array_key_exists('comments_closed',$arr) && $arr['comments_closed'] > NULL_DATE)
$arr['comments_closed'] = datetime_convert('UTC','UTC',$arr['comments_closed']);
else
$arr['comments_closed'] = $orig[0]['comments_closed'];
$arr['commented'] = $orig[0]['commented'];
$arr['received'] = $orig[0]['received'];
$arr['changed'] = $orig[0]['changed'];
}
$arr['edited'] = ((x($arr,'edited') !== false) ? datetime_convert('UTC','UTC',$arr['edited']) : datetime_convert());
$arr['revision'] = ((x($arr,'revision') && $arr['revision'] > 0) ? intval($arr['revision']) : 0);
$arr['location'] = ((x($arr,'location')) ? notags(trim($arr['location'])) : $orig[0]['location']);
$arr['uuid'] = ((x($arr,'uuid')) ? notags(trim($arr['uuid'])) : $orig[0]['uuid']);
$arr['approved'] = ((x($arr,'approved')) ? notags(trim($arr['approved'])) : '');
$arr['lat'] = ((x($arr,'lat')) ? floatval($arr['lat']) : $orig[0]['lat']);
$arr['lon'] = ((x($arr,'lon')) ? floatval($arr['lon']) : $orig[0]['lon']);
$arr['verb'] = ((x($arr,'verb')) ? notags(trim($arr['verb'])) : $orig[0]['verb']);
$arr['obj_type'] = ((x($arr,'obj_type')) ? notags(trim($arr['obj_type'])) : $orig[0]['obj_type']);
$arr['obj'] = ((x($arr,'obj')) ? trim($arr['obj']) : $orig[0]['obj']);
$arr['tgt_type'] = ((x($arr,'tgt_type')) ? notags(trim($arr['tgt_type'])) : $orig[0]['tgt_type']);
$arr['target'] = ((x($arr,'target')) ? trim($arr['target']) : $orig[0]['target']);
$arr['plink'] = ((x($arr,'plink')) ? notags(trim($arr['plink'])) : $orig[0]['plink']);
$arr['replyto'] = ((x($arr,'replyto')) ? serialise($arr['replyto']) : $orig[0]['replyto']);
$arr['allow_cid'] = ((array_key_exists('allow_cid',$arr)) ? trim($arr['allow_cid']) : $orig[0]['allow_cid']);
$arr['allow_gid'] = ((array_key_exists('allow_gid',$arr)) ? trim($arr['allow_gid']) : $orig[0]['allow_gid']);
$arr['deny_cid'] = ((array_key_exists('deny_cid',$arr)) ? trim($arr['deny_cid']) : $orig[0]['deny_cid']);
$arr['deny_gid'] = ((array_key_exists('deny_gid',$arr)) ? trim($arr['deny_gid']) : $orig[0]['deny_gid']);
$arr['item_private'] = ((array_key_exists('item_private',$arr)) ? intval($arr['item_private']) : $orig[0]['item_private']);
$arr['attach'] = ((array_key_exists('attach',$arr)) ? notags(trim($arr['attach'])) : $orig[0]['attach']);
$arr['app'] = ((array_key_exists('app',$arr)) ? notags(trim($arr['app'])) : $orig[0]['app']);
$arr['item_origin'] = ((array_key_exists('item_origin',$arr)) ? intval($arr['item_origin']) : $orig[0]['item_origin'] );
$arr['item_unseen'] = ((array_key_exists('item_unseen',$arr)) ? intval($arr['item_unseen']) : $orig[0]['item_unseen'] );
$arr['item_starred'] = ((array_key_exists('item_starred',$arr)) ? intval($arr['item_starred']) : $orig[0]['item_starred'] );
$arr['item_uplink'] = ((array_key_exists('item_uplink',$arr)) ? intval($arr['item_uplink']) : $orig[0]['item_uplink'] );
$arr['item_consensus'] = ((array_key_exists('item_consensus',$arr)) ? intval($arr['item_consensus']) : $orig[0]['item_consensus'] );
$arr['item_wall'] = ((array_key_exists('item_wall',$arr)) ? intval($arr['item_wall']) : $orig[0]['item_wall'] );
$arr['item_thread_top'] = ((array_key_exists('item_thread_top',$arr)) ? intval($arr['item_thread_top']) : $orig[0]['item_thread_top'] );
$arr['item_notshown'] = ((array_key_exists('item_notshown',$arr)) ? intval($arr['item_notshown']) : $orig[0]['item_notshown'] );
$arr['item_nsfw'] = ((array_key_exists('item_nsfw',$arr)) ? intval($arr['item_nsfw']) : $orig[0]['item_nsfw'] );
$arr['item_relay'] = ((array_key_exists('item_relay',$arr)) ? intval($arr['item_relay']) : $orig[0]['item_relay'] );
$arr['item_mentionsme'] = ((array_key_exists('item_mentionsme',$arr)) ? intval($arr['item_mentionsme']) : $orig[0]['item_mentionsme'] );
$arr['item_nocomment'] = ((array_key_exists('item_nocomment',$arr)) ? intval($arr['item_nocomment']) : $orig[0]['item_nocomment'] );
$arr['item_obscured'] = ((array_key_exists('item_obscured',$arr)) ? intval($arr['item_obscured']) : $orig[0]['item_obscured'] );
$arr['item_verified'] = ((array_key_exists('item_verified',$arr)) ? intval($arr['item_verified']) : $orig[0]['item_verified'] );
$arr['item_retained'] = ((array_key_exists('item_retained',$arr)) ? intval($arr['item_retained']) : $orig[0]['item_retained'] );
$arr['item_rss'] = ((array_key_exists('item_rss',$arr)) ? intval($arr['item_rss']) : $orig[0]['item_rss'] );
$arr['item_deleted'] = ((array_key_exists('item_deleted',$arr)) ? intval($arr['item_deleted']) : $orig[0]['item_deleted'] );
$arr['item_type'] = ((array_key_exists('item_type',$arr)) ? intval($arr['item_type']) : $orig[0]['item_type'] );
$arr['item_hidden'] = ((array_key_exists('item_hidden',$arr)) ? intval($arr['item_hidden']) : $orig[0]['item_hidden'] );
$arr['item_unpublished'] = ((array_key_exists('item_unpublished',$arr)) ? intval($arr['item_unpublished']) : $orig[0]['item_unpublished'] );
$arr['item_delayed'] = ((array_key_exists('item_delayed',$arr)) ? intval($arr['item_delayed']) : $orig[0]['item_delayed'] );
$arr['item_pending_remove'] = ((array_key_exists('item_pending_remove',$arr)) ? intval($arr['item_pending_remove']) : $orig[0]['item_pending_remove'] );
$arr['item_blocked'] = ((array_key_exists('item_blocked',$arr)) ? intval($arr['item_blocked']) : $orig[0]['item_blocked'] );
$arr['sig'] = ((x($arr,'sig')) ? $arr['sig'] : '');
$arr['layout_mid'] = ((array_key_exists('layout_mid',$arr)) ? dbesc($arr['layout_mid']) : $orig[0]['layout_mid'] );
$arr['public_policy'] = '';
$arr['comment_policy'] = ((x($arr,'comment_policy')) ? notags(trim($arr['comment_policy'])) : $orig[0]['comment_policy'] );
/**
* @hooks post_remote_update
* Called when processing a remote post that involved an edit or update.
*/
Hook::call('post_remote_update', $arr);
if(x($arr, 'cancel')) {
logger('Post cancelled by plugin.');
$ret['message'] = 'cancelled.';
return $ret;
}
// pull out all the taxonomy stuff for separate storage
$terms = null;
if(array_key_exists('term',$arr)) {
$terms = $arr['term'];
unset($arr['term']);
}
$meta = null;
if(array_key_exists('iconfig',$arr)) {
$meta = $arr['iconfig'];
unset($arr['iconfig']);
}
logger('item_store_update: ' . print_r($arr,true), LOGGER_DATA);
logger('item_store_update_terms: ' . print_r($terms, true), LOGGER_DATA);
$str = '';
foreach($arr as $k => $v) {
if($str)
$str .= ",";
$str .= " " . TQUOT . dbesc($k) . TQUOT . " = '" . dbesc($v) . "' ";
}
$r = dbq("update item set " . $str . " where id = " . $orig_post_id );
if($r)
logger('Updated item ' . $orig_post_id, LOGGER_DEBUG);
else {
logger('Could not update item');
$ret['message'] = 'DB update failed.';
return $ret;
}
// fetch an unescaped complete copy of the stored item
$r = q("select * from item where id = %d",
intval($orig_post_id)
);
if($r)
$arr = $r[0];
$r = q("delete from term where oid = %d and otype = %d",
intval($orig_post_id),
intval(TERM_OBJ_POST)
);
if(is_array($terms)) {
foreach($terms as $t) {
q("insert into term (uid,oid,otype,ttype,term,url)
values(%d,%d,%d,%d,'%s','%s') ",
intval($uid),
intval($orig_post_id),
intval(TERM_OBJ_POST),
intval($t['ttype']),
dbesc($t['term']),
dbesc($t['url'])
);
}
$arr['term'] = $terms;
}
$r = q("delete from iconfig where iid = %d",
intval($orig_post_id)
);
if($meta) {
foreach($meta as $m) {
set_iconfig($orig_post_id,$m['cat'],$m['k'],$m['v'],$m['sharing']);
}
$arr['iconfig'] = $meta;
}
$ret['item'] = $arr;
/**
* @hooks post_remote_update_end
* Called after processing a remote post that involved an edit or update.
*/
Hook::call('post_remote_update_end', $arr);
if((str_contains($arr['body'], '[embed]')) || (str_contains($arr['body'], '[/img]'))) {
Run::Summon([ 'Cache_embeds', $orig_post_id ]);
}
$ret['success'] = true;
$ret['item_id'] = $orig_post_id;
if ($addAndSync) {
$ret = addToCollectionAndSync($ret);
}
if($deliver) {
// don't send notify_comment for edits
// send_status_notifications($orig_post_id,$arr);
tag_deliver($uid,$orig_post_id);
}
return $ret;
}
function item_update_parent_commented($item) {
$update_parent = true;
// update the commented timestamp on the parent
// - unless this is a moderated comment or a potential clone of an older item
// which we don't wish to bring to the surface. As the queue only holds deliveries
// for 3 days, it's suspected of being an older cloned item if the creation time
// is older than that.
if(intval($item['item_blocked']) === ITEM_MODERATED)
$update_parent = false;
if($item['created'] < datetime_convert('','','now - 4 days'))
$update_parent = false;
if($update_parent) {
$z = q("select max(created) as commented from item where parent_mid = '%s' and uid = %d and item_delayed = 0 and item_deleted = 0",
dbesc($item['parent_mid']),
intval($item['uid'])
);
q("UPDATE item set commented = '%s', changed = '%s' WHERE id = %d",
dbesc(($z) ? $z[0]['commented'] : datetime_convert()),
dbesc(datetime_convert()),
intval($item['parent'])
);
}
}
function send_status_notifications($item)
{
// logger('notifications: ' . print_r($item, true));
$original_author = false;
if ($item['mid'] === $item['parent_mid']) {
if (intval($item['item_blocked']) === ITEM_MODERATED) {
if (str_contains($item['body'],'[/share]')) {
preg_match("/portable_id='(.*?)'/ism", $item['body'], $matches);
logger('matches: ' . print_r($matches, true));
if ($matches) {
$s = q("select * from xchan where xchan_hash = '%s'",
dbesc(urldecode($matches[1]))
);
if ($s) {
$original_author = array_shift($s);
}
}
}
}
else {
return;
}
}
$notify = false;
$unfollowed = false;
$parent = 0;
$thr_parent_id = 0;
if (array_key_exists('verb', $item) && (activity_match($item['verb'], ACTIVITY_LIKE) || activity_match($item['verb'], ACTIVITY_DISLIKE))) {
$r = q("select id from item where mid = '%s' and uid = %d limit 1",
dbesc($item['thr_parent']),
intval($item['uid'])
);
$thr_parent_id = $r[0]['id'];
}
$r = Channel::from_id($item['uid']);
if (!$r) {
return;
}
// my own post - no notification needed
if ($item['author_xchan'] === $r['channel_hash'] && intval($item['item_blocked']) !== ITEM_MODERATED) {
return;
}
// I'm the owner - notify me
if ($item['owner_xchan'] === $r['channel_hash']) {
$notify = true;
}
// Was I involved in this conversation?
$x = q("select * from item where parent_mid = '%s' and uid = %d",
dbesc($item['parent_mid']),
intval($item['uid'])
);
if ($x) {
foreach ($x as $xx) {
if ($xx['author_xchan'] === $r['channel_hash']) {
$notify = true;
// check for an unfollow thread activity - we should probably decode the obj and check the id
// but it will be extremely rare for this to be wrong.
if (($xx['verb'] === ACTIVITY_IGNORE)
&& ($xx['obj_type'] === ACTIVITY_OBJ_NOTE || $xx['obj_type'] === ACTIVITY_OBJ_PHOTO)
&& ($xx['parent'] != $xx['id'])) {
$unfollowed = true;
}
}
if ($xx['id'] == $xx['parent']) {
$parent = $xx['parent'];
}
}
}
if ($unfollowed) {
return;
}
if (intval($item['item_private']) === 2) {
$notify_type = NOTIFY_MAIL;
}
elseif (intval($item['item_blocked']) === ITEM_MODERATED) {
$notify_type = NOTIFY_MODERATE;
}
elseif ($item['verb'] === 'Announce') {
$notify_type = NOTIFY_RESHARE;
}
else {
$notify_type = NOTIFY_COMMENT;
}
$link = z_root() . (($notify_type === NOTIFY_MODERATE) ? '/moderate' : '/display' )
. '/?mid=' . gen_link_id($item['mid']);
$y = q("select id from notify where link = '%s' and uid = %d limit 1",
dbesc($link),
intval($item['uid'])
);
if ($y) {
$notify = false;
}
if (! $notify) {
return;
}
Enotify::submit([
'type' => $notify_type,
'from_xchan' => $original_author ? $original_author['xchan_hash'] : $item['author_xchan'],
'to_xchan' => $r['channel_hash'],
'item' => $item,
'link' => $link,
'verb' => $item['verb'],
'otype' => 'item',
'parent' => $thr_parent_id ?: $parent,
'parent_mid' => $thr_parent_id ? $item['thr_parent'] : $item['parent_mid']
]);
}
/**
* @brief Called when we deliver things that might be tagged in ways that require delivery processing.
*
* Handles community tagging of posts and also look for mention tags and sets up
* a second delivery chain if appropriate.
*
* @param int $uid
* @param int $item_id
*/
function tag_deliver($uid, $item_id) {
$role = get_pconfig($uid,'system','permissions_role');
$rolesettings = PermissionRoles::role_perms($role);
$channel_type = isset($rolesettings['channel_type']) ? $rolesettings['channel_type'] : 'normal';
$is_group = ($channel_type === 'group');
$is_collection = ($channel_type === 'collection');
logger('checking tags');
if ($is_group) {
logger('Channel is a group.');
}
/*
* Fetch stuff we need - a channel and an item
*/
$u = Channel::from_id($uid);
if (! $u) {
return;
}
$i = q("select * from item where id = %d and uid = %d limit 1",
intval($item_id),
intval($uid)
);
if (! $i) {
return;
}
xchan_query($i,true);
$i = fetch_post_tags($i);
$item = array_shift($i);
if (intval($item['item_uplink']) && $item['source_xchan']
&& intval($item['item_thread_top']) && ($item['edited'] != $item['created'])) {
// this is an update (edit) to a post which was already processed by us and has a second delivery chain
// Just start the second delivery chain to deliver the updated post
// after resetting ownership and permission bits
logger('updating edited tag_deliver post for ' . $u['channel_address']);
start_delivery_chain($u, $item, $item_id, false, false, true);
return;
}
// send mail (DM) notifications here, but only for top level posts.
// followups will be processed by send_status_notifications()
$mail_notify = false;
if ((! $item['item_wall']) && intval($item['item_thread_top']) && $item['author_xchan'] !== $u['channel_hash'] && intval($item['item_private']) === 2) {
Enotify::submit([
'to_xchan' => $u['channel_hash'],
'from_xchan' => $item['author_xchan'],
'type' => NOTIFY_MAIL,
'item' => $item,
'link' => $item['llink'],
'verb' => 'DM',
'otype' => 'item'
]);
$mail_notify = true;
}
// important - ignore wall posts here else dm's by group owner will be sent to group.
if ($is_group && intval($item['item_private']) === 2 && intval($item['item_thread_top']) && (! intval($item['item_wall']))) {
// group delivery via DM - use post_wall permission since send_stream is probably turned off
// and this will be turned into an embedded wall-to-wall post
if(perm_is_allowed($uid, $item['author_xchan'], 'post_wall')) {
logger('group DM delivery for ' . $u['channel_address']);
start_delivery_chain($u, $item, $item_id, false, true, (($item['edited'] != $item['created']) || $item['item_deleted']));
q("update item set item_blocked = %d where id = %d",
intval(ITEM_HIDDEN),
intval($item_id)
);
}
return;
}
// Deliver to group via target collection
if ($is_group && intval($item['item_thread_top']) && (! intval($item['item_wall'])) && (str_contains($item['tgt_type'], 'Collection')) && $item['target']) {
// group delivery via target - use post_wall permission since send_stream is probably turned off
// and this will be turned into an embedded wall-to-wall post
if (is_array($item['target'])) {
$a = $item['target'];
}
else {
$a = json_decode($item['target'],true);
}
if ($a) {
$id = ((is_string($a)) ? $a : EMPTY_STR);
if (is_array($a) && isset($a['id'])) {
$id = $a['id'];
}
if ($id == z_root() . '/outbox/' . $u['channel_address']) {
if(perm_is_allowed($uid, $item['author_xchan'], 'post_wall')) {
logger('group collection delivery for ' . $u['channel_address']);
start_delivery_chain($u, $item, $item_id, false, true, (($item['edited'] != $item['created']) || $item['item_deleted']));
q("update item set item_blocked = %d where id = %d",
intval(ITEM_HIDDEN),
intval($item_id)
);
}
return;
}
}
}
if ($is_group && intval($item['item_thread_top']) && intval($item['item_wall']) && $item['author_xchan'] !== $item['owner_xchan']) {
if (strpos($item['body'],'[/share]')) {
logger('W2W post already shared');
return;
}
// group delivery via W2W
logger('rewriting W2W post for ' . $u['channel_address']);
start_delivery_chain($u, $item, $item_id, false, true, (($item['edited'] != $item['created']) || $item['item_deleted']));
q("update item set item_wall = 0 where id = %d",
intval($item_id)
);
return;
}
/*
* A "union" is a message which our channel has sourced from another channel.
* This sets up a second delivery chain just like forum tags do.
* Find out if this is a source-able post.
*/
$union = check_item_source($uid,$item);
if ($union) {
logger('check_item_source returns true');
}
// This might be a followup (e.g. comment) to an already uplinked item
// If so setup a second delivery chain
if (! intval($item['item_thread_top'])) {
$x = q("select * from item where id = parent and parent = %d and uid = %d limit 1",
intval($item['parent']),
intval($uid)
);
if ($x) {
// group comments don't normally require a second delivery chain
// but we create a linked Announce so they will show up in the home timeline
// on microblog platforms and this creates a second delivery chain
if (($is_group || $union) && intval($x[0]['item_wall'])) {
// don't let the forked delivery chain recurse
if ($item['verb'] === 'Announce' && $item['author_xchan'] === $u['channel_hash']) {
return;
}
// don't boost moderated content until it has been approved
if (intval($item['item_blocked']) === ITEM_MODERATED) {
return;
}
// don't boost likes and other response activities as it is likely that
// few platforms will handle this in an elegant way
if (ActivityStreams::is_response_activity($item['verb'])) {
return;
}
logger('group_comment');
start_delivery_chain($u, $item, $item_id, $x[0], true, (($item['edited'] != $item['created']) || $item['item_deleted']));
}
elseif (intval($x[0]['item_uplink'])) {
start_delivery_chain($u,$item,$item_id,$x[0]);
}
}
}
/*
* Now we've got those out of the way. Let's see if this is a post that's tagged for re-delivery
*/
$terms = ((isset($item['term'])) ? get_terms_oftype($item['term'],[TERM_MENTION, TERM_FORUM]) : false);
$pterms = ((isset($item['term'])) ? get_terms_oftype($item['term'], [TERM_PCATEGORY, TERM_HASHTAG] ) : false);
if ($terms) {
logger('Post mentions: ' . print_r($terms,true), LOGGER_DATA);
}
if ($pterms) {
logger('Post collections: ' . print_r($pterms,true), LOGGER_DATA);
}
$link = normalise_link($u['xchan_url']);
if ($terms) {
foreach ($terms as $term) {
if (! link_compare($term['url'],$link)) {
continue;
}
logger('Mention found for ' . $u['channel_name']);
q("update item set item_mentionsme = 1 where id = %d",
intval($item_id)
);
// At this point we've determined that the person receiving this post was mentioned in it or it is a union.
// Now let's check if this mention was inside a reshare so we don't spam a forum
$body = strip_share_content($item['body']);
$tagged = false;
$matches = [];
$pattern = '/[!@]!?\[[uz]rl=' . preg_quote($term['url'],'/') . '](.*?)\[\/[uz]rl]/';
if (preg_match($pattern,$body,$matches))
$tagged = true;
$pattern = '/\[[uz]rl=' . preg_quote($term['url'],'/') . '][!@](.*?)\[\/[uz]rl]/';
if (preg_match($pattern,$body,$matches))
$tagged = true;
if (! $tagged ) {
logger('Mention was in a reshare - ignoring');
continue;
}
$arr = [
'channel_id' => $uid,
'item' => $item,
'body' => $body
];
/**
* @hooks tagged
* Called when a delivery is processed which results in you being tagged.
* * \e number \b channel_id
* * \e array \b item
* * \e string \b body
*/
Hook::call('tagged', $arr);
/**
* post to a group via group tags (!group) or normal @-mentions *only if* the group is public
* but let the owner change this with a hidden pconfig and either allow
* or deny this option regardless of the type of group
*/
if ($is_group && intval($item['item_thread_top']) && (! intval($item['item_wall']))) {
if ((intval($term['ttype']) === TERM_FORUM || get_pconfig($uid,'system','post_via_mentions',in_array($role,['forum','forum_moderated']))) && perm_is_allowed($uid, $item['author_xchan'], 'post_wall')) {
logger('group mention delivery for ' . $u['channel_address']);
start_delivery_chain($u, $item, $item_id, false, true, (($item['edited'] != $item['created']) || $item['item_deleted']));
q("update item set item_blocked = %d where id = %d",
intval(ITEM_HIDDEN),
intval($item_id)
);
}
}
/*
* Send a mention notification - unless we just sent a mail notification for the same item
*/
if (! $mail_notify) {
Enotify::submit([
'to_xchan' => $u['channel_hash'],
'from_xchan' => $item['author_xchan'],
'type' => NOTIFY_TAGSELF,
'item' => $item,
'link' => $item['llink'],
'verb' => ACTIVITY_TAG,
'otype' => 'item'
]);
}
}
}
if ($is_collection && $pterms) {
foreach ($pterms as $term) {
$ptagged = false;
if (link_compare($term['url'],$link)) {
$ptagged = true;
}
elseif ($term['ttype'] === TERM_HASHTAG && strtolower($term['term']) === strtolower($u['channel_address'])) {
$ptagged = true;
}
if (! $ptagged) {
continue;
}
logger('Collection post found for ' . $u['channel_name']);
// ptagged - keep going, next check permissions
if ((! perm_is_allowed($uid, $item['author_xchan'], 'write_collection')) && ($item['author_xchan'] !== $u['channel_parent'])) {
logger('tag_delivery denied for uid ' . $uid . ' and xchan ' . $item['author_xchan']);
continue;
}
// tgroup delivery - set up a second delivery chain
// prevent delivery looping - only proceed
// if the message originated elsewhere and is a top-level post
if (intval($item['item_wall']) || intval($item['item_origin']) || (! intval($item['item_thread_top'])) || ($item['id'] != $item['parent'])) {
logger('Item was local or a comment. rejected.');
continue;
}
logger('Creating second delivery chain.');
start_delivery_chain($u,$item,$item_id, false);
}
}
if ($union) {
if (intval($item['item_wall']) || intval($item['item_origin']) || (! intval($item['item_thread_top'])) || ($item['id'] != $item['parent'])) {
logger('Item was local or a comment. rejected.');
return;
}
logger('Creating second delivery chain.');
start_delivery_chain($u,$item,$item_id,false);
}
}
/**
* @brief This function is called pre-deliver to see if a post matches the criteria to be tag delivered.
*
* We don't actually do anything except check that it matches the criteria.
* This is so that the channel with tag_delivery enabled can receive the post even if they turn off
* permissions for the sender to send their stream. tag_deliver() can't be called until the post is actually stored.
* By then it would be too late to reject it.
*
* @param number $uid A chnnel_id
* @param array $item
* @return boolean
*/
function tgroup_check($uid, $item) {
$role = get_pconfig($uid,'system','permissions_role');
$rolesettings = PermissionRoles::role_perms($role);
$channel_type = isset($rolesettings['channel_type']) ? $rolesettings['channel_type'] : 'normal';
$is_group = $channel_type === 'group';
$is_collection = $channel_type === 'collection';
// If a comment, check if we have already accepted the top level post as an uplink
// Applies to collections only at this time
if ($item['mid'] !== $item['parent_mid']) {
$r = q("select id from item where mid = '%s' and uid = %d and (item_uplink = 1 or item_wall = 1) limit 1",
dbesc($item['parent_mid']),
intval($uid)
);
if ($r) {
return true;
}
}
$u = Channel::from_id($uid);
if (! $u) {
return false;
}
// post to group via DM
if ($is_group) {
if (intval($item['item_private']) === 2 && $item['mid'] === $item['parent_mid']) {
return true;
}
if ($item['mid'] === $item['parent_mid'] && (! intval($item['item_wall'])) && (str_contains($item['tgt_type'], 'Collection')) && $item['target']) {
// accept posts to collections only if the collection belongs to us
if ((is_string($item['target']) && $item['target'] === z_root() . '/followers/' . $u['channel_address'])
|| (isset($item['target']['id']) && $item['target']['id'] === z_root() . '/followers/' . $u['channel_address'])) {
return true;
}
}
if (get_pconfig($uid,'system','post_via_mentions',in_array($role, ['forum','forum_moderated'])) && i_am_mentioned($u,$item)) {
return true;
}
elseif (i_am_mentioned($u,$item, true)) {
return true;
}
}
// see if we already have this item. Maybe it is being updated.
$r = q("select id from item where mid = '%s' and uid = %d limit 1",
dbesc($item['mid']),
intval($uid)
);
if ($r) {
return true;
}
if (($is_collection) && (perm_is_allowed($uid, $item['author_xchan'], 'write_collection') || $item['author_xchan'] === $u['channel_parent'])) {
return true;
}
// return true if we are mentioned, and we permit delivery of mentions from strangers
if (PConfig::Get($uid, 'system','permit_all_mentions') && i_am_mentioned($u,$item)) {
return true;
}
if (PConfig::Get($uid, 'system','permit_all_likes') && $item['verb'] === 'Like' && $item['obj_type'] === 'Note') {
return true;
}
$tag_result = false;
$terms = ((isset($item['term'])) ? get_terms_oftype($item['term'],TERM_HASHTAG) : false);
if ($terms) {
$followed_tags = PConfig::Get($uid,'system','followed_tags');
if (! (is_array($followed_tags) && $followed_tags)) {
return false;
}
foreach ($terms as $term) {
foreach ($followed_tags as $tag) {
if (strcasecmp($term['term'],$tag) === 0) {
$tag_result = true;
}
}
}
$unless = intval(PConfig::Get($uid, 'system', 'unless_tag_count',
Config::Get('system', 'unless_tag_count', 20)));
if ($unless && count($terms) > $unless) {
$tag_result= false;
}
}
return $tag_result;
}
function i_am_mentioned($channel,$item,$check_groups = false) {
$link = $channel['xchan_url'];
$body = preg_replace('/\[share(.*?)\[\/share]/','',$item['body']);
$tagged = false;
$matches = [];
$tagtype = $check_groups ? TERM_FORUM : TERM_MENTION;
$terms = ((isset($item['term'])) ? get_terms_oftype($item['term'], $tagtype) : false);
if ($terms) {
foreach ($terms as $term) {
if ($link === $term['url']) {
$pattern = '/[!@]!?\[[uz]rl=' . preg_quote($term['url'],'/') . '](.*?)\[\/[uz]rl]/';
if (preg_match($pattern,$body,$matches)) {
$tagged = true;
}
$pattern = '/\[[uz]rl=' . preg_quote($term['url'],'/') . '][!@](.*?)\[\/[uz]rl]/';
if (preg_match($pattern,$body,$matches)) {
$tagged = true;
}
}
}
}
$unless = intval(get_pconfig($channel['channel_id'], 'system', 'unless_mention_count', get_config('system', 'unless_mention_count', 20)));
if ($unless && $terms && count($terms) > $unless) {
$tagged = false;
}
return $tagged;
}
/**
* Sourced and tag-delivered posts are re-targetted for delivery to the connections of the channel
* receiving the post. This starts the second delivery chain, by resetting permissions and ensuring
* that ITEM_UPLINK is set on the parent post, and storing the current owner_xchan as the source_xchan.
* We'll become the new owner. If called without $parent, this *is* the parent post.
*
* @param array $channel
* @param array $item
* @param int $item_id
* @param bool|array $parent
*/
function start_delivery_chain($channel, $item, $item_id, bool|array $parent, $group = false, $edit = false) {
// btlogger('start_chain: ' . $channel['channel_id'] . ' item: ' . $item_id);
$moderated = perm_is_allowed($channel['channel_id'], $item['author_xchan'], 'moderated');
$source = check_item_source($channel['channel_id'],$item);
if ($item['author_xchan'] === $channel['channel_hash'] && in_array($item['verb'], ['Add', 'Remove'])) {
logger('delivery chain already started');
return;
}
// This creates an embedded share authored by the group actor.
// The original message is no longer needed and its presence can cause
// confusion so make it hidden.
if (!$parent) {
$arr = [];
// hide original message
q("update item set item_hidden = 1 where id = %d",
intval($item_id)
);
if ($edit) {
// process edit or delete action
$r = q("select * from item where source_xchan = '%s' and body like '%s' and uid = %d limit 1",
dbesc($item['owner_xchan']),
dbesc("%message_id='" . $item['mid'] . "'%"),
intval($channel['channel_id'])
);
if ($r) {
if (intval($item['item_deleted'])) {
drop_item($r[0]['id'],DROPITEM_PHASE1);
Run::Summon([ 'Notifier','drop',$r[0]['id'] ]);
return;
}
$arr['id'] = intval($r[0]['id']);
$arr['parent'] = intval($r[0]['parent']);
$arr['mid'] = $r[0]['mid'];
$arr['parent_mid'] = $r[0]['parent_mid'];
$arr['edited'] = datetime_convert();
}
else {
logger('unable to locate original group post ' . $item['mid']);
return;
}
}
else {
$arr['mid'] = item_message_id();
$arr['parent_mid'] = $arr['mid'];
IConfig::Set($arr,'activitypub','context', str_replace('/item/','/conversation/',$arr['mid']));
}
$arr['aid'] = $channel['channel_account_id'];
$arr['uid'] = $channel['channel_id'];
// WARNING: the presence of both source_xchan and non-zero item_uplink here will cause a delivery loop
$arr['item_uplink'] = 0;
$arr['source_xchan'] = $item['author_xchan'];
$arr['item_private'] = (($channel['channel_allow_cid'] || $channel['channel_allow_gid'] || $channel['channel_deny_cid'] || $channel['channel_deny_gid']) ? 1 : 0);
$arr['item_origin'] = 1;
$arr['item_wall'] = 1;
$arr['item_thread_top'] = 1;
if ($moderated) {
$arr['item_blocked'] = ITEM_MODERATED;
}
$bb = "[share author='" . urlencode($item['author']['xchan_name']) .
"' profile='" . $item['author']['xchan_url'] .
"' portable_id='" . $item['author']['xchan_hash'] .
"' avatar='" . $item['author']['xchan_photo_s'] .
"' link='" . $item['plink'] .
"' auth='" . ((isOWAEnabled($item['author']['xchan_url'])) ? 'true' : 'false') .
"' posted='" . $item['created'] .
"' message_id='" . $item['mid'] .
"']";
if ($item['title']) {
$bb .= '[b]' . $item['title'] . '[/b]' . "\r\n";
$arr['title'] = $item['title'];
}
$bb .= $item['body'];
$bb .= "\n[/share]";
$arr['body'] = $bb;
$tagpref = intval(PConfig::Get($channel['channel_id'], 'system', 'tag_username', Config::Get('system', 'tag_username', false)));
$mention = $item['author']['xchan_name'];
if ($tagpref === 1 && $item['author']['xchan_addr']) {
$mention = $item['author']['xchan_addr'];
}
if ($tagpref === 2 && $item['author']['xchan_addr']) {
$mention = sprintf(t('%1$s (%2$s)'), $item['author']['xchan_name'], $item['author']['xchan_addr']);
}
$arr['body'] .= "\n" . '@[zrl=' . $item['author']['xchan_url'] . ']' . $mention . '[/zrl]';
// Conversational objects shouldn't be copied, but other objects should.
if (in_array($item['obj_type'], [ 'Image', 'Event', 'Question'])) {
$arr['obj'] = $item['obj'];
$t = json_decode($arr['obj'],true);
if ($t !== NULL) {
$arr['obj'] = $t;
}
$arr['obj']['content'] = bbcode($bb, [ 'export' => true ]);
$arr['obj']['source']['content'] = $bb;
$arr['obj']['id'] = $arr['mid'];
if (! array_path_exists('obj/source/mediaType',$arr)) {
$arr['obj']['source']['mediaType'] = 'text/x-multicode';
}
}
$arr['tgt_type'] = 'Collection';
$arr['target'] = [
'id' => str_replace('/item/', '/conversation/', $arr['parent_mid']),
'type' => 'Collection',
'attributedTo' => z_root() . '/channel/' . $channel['channel_address'],
];
// Add a mention for the author.
$arr['term'] = ($item['term']) ?: [];
$arr['term'][] = [
'uid' => $channel['channel_id'],
'ttype' => TERM_MENTION,
'otype' => TERM_OBJ_POST,
'term' => '@' . $item['author']['xchan_addr'],
'url' => $item['author']['xchan_url']
];
$arr['author_xchan'] = $channel['channel_hash'];
$arr['owner_xchan'] = $channel['channel_hash'];
$arr['obj_type'] = $item['obj_type'];
$arr['verb'] = 'Create';
$arr['allow_cid'] = $channel['channel_allow_cid'];
$arr['allow_gid'] = $channel['channel_allow_gid'];
$arr['deny_cid'] = $channel['channel_deny_cid'];
$arr['deny_gid'] = $channel['channel_deny_gid'];
$arr['comment_policy'] = map_scope(PermissionLimits::Get($channel['channel_id'],'post_comments'));
$merge = (($item['attach']) ?: []);
if (is_string($merge)) {
$merge = json_decode($merge, true);
}
if ($merge) {
$arr['attach'] = array_merge($merge, [['type' => 'application/activity+json', 'href' => $item['mid']]]);
}
else {
$arr['attach'] = [['type' => 'application/activity+json', 'href' => $item['mid']]];
}
$arr['replyto'] = z_root() . '/channel/' . $channel['channel_address'];
if (!array_key_exists('obj', $arr)) {
$copy = $arr;
$copy['author'] = $channel;
$arr['obj'] = Activity::encode_item($copy, ((get_config('system', 'activitypub', ACTIVITYPUB_ENABLED)) ? true : false));
$recips = [];
$i = $arr['obj'];
if ($i['to']) {
$arr['to'] = $i['to'];
}
if ($i['cc']) {
$arr['cc'] = $i['cc'];
}
IConfig::Set($arr, 'activitypub', 'recips', $recips);
}
if ($arr['id']) {
$post = item_store_update($arr);
}
else {
$post = item_store($arr);
}
$post_id = $post['item_id'];
if ($source && $post_id && !$edit) {
$t = trim($source['src_tag']);
if ($t) {
$tags = explode(',', $t);
if ($tags) {
foreach ($tags as $tt) {
$tt = trim($tt);
if ($tt) {
q("insert into term (uid,oid,otype,ttype,term,url)
values(%d,%d,%d,%d,'%s','%s') ",
intval($channel['channel_id']),
intval($post_id),
intval(TERM_OBJ_POST),
intval(TERM_CATEGORY),
dbesc($tt),
dbesc(z_root() . '/channel/' . $channel['channel_address'] . '?f=&cat=' . urlencode($tt))
);
}
}
}
}
}
$post_id = $post['success'] ? $post['item_id'] : 0;
if($post_id) {
Run::Summon(['Notifier', 'tgroup', $post_id ]);
if (!empty($post['approval_id'])) {
Run::Summon(['Notifier', 'tgroup', $post['approval_id']]);
}
}
q("update channel set channel_lastpost = '%s' where channel_id = %d",
dbesc(datetime_convert()),
intval($channel['channel_id'])
);
return;
}
// Send Announce activities for group comments, so they will show up in microblog streams
if ($parent) {
logger('comment arrived for new delivery chain', LOGGER_DEBUG);
$arr = [];
// don't let this recurse. We checked for this before calling, but this ensures
// it doesn't sneak through another way because recursion is nasty.
if ($item['verb'] === 'Announce' && $item['author_xchan'] === $channel['channel_hash']) {
return;
}
// Don't send Announce activities for poll responses.
if ($item['obj_type'] === 'Answer') {
return;
}
if ($edit) {
if (intval($item['item_deleted'])) {
drop_item($item['id'],DROPITEM_PHASE1);
Run::Summon(['Notifier', 'drop', $item['id'] ]);
return;
}
return;
}
else {
$arr['mid'] = item_message_id();
$arr['parent_mid'] = $item['parent_mid'];
IConfig::Set($arr,'activitypub','context', str_replace('/item/','/conversation/',$item['parent_mid']));
}
$arr['aid'] = $channel['channel_account_id'];
$arr['uid'] = $channel['channel_id'];
$arr['verb'] = 'Announce';
if (is_array($item['obj'])) {
$arr['obj'] = $item['obj'];
}
elseif (is_string($item['obj']) && strlen($item['obj'])) {
$arr['obj'] = json_decode($item['obj'],true);
}
if (! $arr['obj']) {
$arr['obj'] = $item['mid'];
}
if (is_array($arr['obj'])) {
$obj_actor = ((isset($arr['obj']['actor'])) ? $arr['obj']['actor'] : $arr['obj']['attributedTo']);
$mention = Activity::get_actor_bbmention($obj_actor);
$arr['body'] = sprintf( t('&#x1F4E2; Repeated %1$s\'s %2$s'), $mention, $arr['obj']['type']);
}
$arr['author_xchan'] = $channel['channel_hash'];
$arr['item_wall'] = 1;
$arr['item_private'] = (($channel['channel_allow_cid'] || $channel['channel_allow_gid'] || $channel['channel_deny_cid'] || $channel['channel_deny_gid']) ? 1 : 0);
$arr['item_origin'] = 1;
$arr['item_thread_top'] = 0;
$arr['allow_cid'] = $channel['channel_allow_cid'];
$arr['allow_gid'] = $channel['channel_allow_gid'];
$arr['deny_cid'] = $channel['channel_deny_cid'];
$arr['deny_gid'] = $channel['channel_deny_gid'];
$arr['comment_policy'] = map_scope(PermissionLimits::Get($channel['channel_id'],'post_comments'));
$arr['replyto'] = z_root() . '/channel/' . $channel['channel_address'];
$post = item_store($arr, deliver: false, addAndSync: false);
$post_id = $post['item_id'];
if ($post_id) {
Run::Summon([ 'Notifier','tgroup',$post_id ]);
}
q("update channel set channel_lastpost = '%s' where channel_id = %d",
dbesc(datetime_convert()),
intval($channel['channel_id'])
);
}
}
/**
* @brief
*
* Checks to see if this item owner is referenced as a source for this channel and if the post
* matches the rules for inclusion in this channel. Returns true if we should create a second delivery
* chain and false if none of the rules apply, or if the item is private.
*
* @param int $uid
* @param array $item
*/
function check_item_source($uid, $item) {
logger('source: uid: ' . $uid, LOGGER_DEBUG);
$xchan = ((isset($item['source_xchan']) && $item['source_xchan'] && isset($item['item_uplink']) && intval($item['item_uplink'])) ? $item['source_xchan'] : $item['owner_xchan']);
$linkedIds = null;
$channel = Channel::from_id($uid);
if ($channel) {
$linkedIds = q("select * from linkid where ident = '%s' and sigtype = %d",
dbesc($channel['channel_hash']),
intval(IDLINK_RELME)
);
}
$r = q("select * from source where src_channel_id = %d and ( src_xchan = '%s' or src_xchan = '*' ) limit 1",
intval($uid),
dbesc($xchan)
);
if (! $r) {
logger('source: no source record for this channel and source', LOGGER_DEBUG);
return false;
}
$x = q("select abook_feed from abook where abook_channel = %d and abook_xchan = '%s' limit 1",
intval($uid),
dbesc($xchan)
);
if (! $x) {
logger('source: not connected to this channel.');
return false;
}
if (! their_perms_contains($uid,$xchan,'republish')) {
if ($linkedIds) {
foreach ($linkedIds as $linkId) {
if ($linkId['link'] === $item['owner_xchan'] || $linkId['link'] === $item['owner']['xchan_url']) {
logger('source: success - linked identity');
return true;
}
}
}
logger('source: no republish permission');
return false;
}
if ($item['item_private'] && (! intval($x[0]['abook_feed']))) {
logger('source: item is private');
return false;
}
if ($r[0]['src_channel_xchan'] === $xchan) {
logger('source: cannot source yourself');
return false;
}
if (! $r[0]['src_patt']) {
logger('source: success');
return array_shift($r);
}
if (MessageFilter::evaluate($item, $r[0]['src_patt'], EMPTY_STR)) {
logger('source: text filter success');
return array_shift($r);
}
logger('source: filter fail');
return false;
}
// Checks an incoming item against the per-channel and per-connection content filter.
// This implements the backend of the 'Content Filter' system app
function post_is_importable($channel_id, $item, $abook) {
if (! $item) {
return false;
}
if (! Apps::system_app_installed($channel_id, 'Content Filter')) {
return true;
}
$text = prepare_text($item['body'],((isset($item['mimetype'])) ? $item['mimetype'] : 'text/x-multicode'));
$text = html2plain((isset($item['title']) && $item['title']) ? $item['title'] . ' ' . $text : $text);
$incl = PConfig::Get($channel_id, 'system', 'message_filter_incl', EMPTY_STR);
$excl = PConfig::Get($channel_id, 'system', 'message_filter_excl', EMPTY_STR);
if ($incl || $excl) {
$x = MessageFilter::evaluate($item, $incl, $excl, ['plaintext' => $text]);
if (! $x) {
logger('MessageFilter: channel blocked content', LOGGER_DEBUG, LOG_INFO);
return false;
}
}
if (! $abook) {
return true;
}
foreach ($abook as $ab) {
// check eligibility
if (intval($ab['abook_self'])) {
continue;
}
if (! ($ab['abook_incl'] || $ab['abook_excl']) ) {
continue;
}
$evaluator = MessageFilter::evaluate($item, $ab['abook_incl'], $ab['abook_excl'], ['plaintext' => $text]);
// A negative assessment for any individual connections is an instant fail.
if (! $evaluator) {
return false;
}
}
return true;
}
function has_permissions($obj) {
return (! (empty($obj['allow_cid']) && empty($obj['allow_gid'])
&& empty($obj['deny_cid']) && empty($obj['deny_gid'])));
}
function compare_permissions($obj1,$obj2) {
// first part is easy. Check that these are exactly the same.
if (($obj1['allow_cid'] == $obj2['allow_cid'])
&& ($obj1['allow_gid'] == $obj2['allow_gid'])
&& ($obj1['deny_cid'] == $obj2['deny_cid'])
&& ($obj1['deny_gid'] == $obj2['deny_gid'])) {
return true;
}
// This is harder. Parse all the permissions and compare the resulting set.
$recipients1 = enumerate_permissions($obj1);
$recipients2 = enumerate_permissions($obj2);
sort($recipients1);
sort($recipients2);
if ($recipients1 == $recipients2) {
return true;
}
return false;
}
/**
* @brief Returns an array of connection identifiers that are allowed to see this object.
*
* @param object $obj
* @return array
*/
function enumerate_permissions($obj) {
$allow_people = expand_acl($obj['allow_cid']);
$allow_groups = AccessList::expand(expand_acl($obj['allow_gid']));
$deny_people = expand_acl($obj['deny_cid']);
$deny_groups = AccessList::expand(expand_acl($obj['deny_gid']));
$recipients = array_unique(array_merge($allow_people,$allow_groups));
$deny = array_unique(array_merge($deny_people,$deny_groups));
$recipients = array_diff($recipients,$deny);
return $recipients;
}
function item_expire($uid,$days,$comment_days = 7) {
if ((! $uid) || ($days < 1)) {
return;
}
if (! $comment_days) {
$comment_days = 7;
}
// $expire_stream_only = save your own wall posts
// and just expire conversations started by others
// do not enable this until we can pass bulk delete messages through zot
// $expire_stream_only = get_pconfig($uid,'expire','stream_only');
$expire_stream_only = 1;
$sql_extra = ((intval($expire_stream_only)) ? " AND item_wall = 0 " : "");
// We need to set an arbitrary limit on the number of records to be expired to
// prevent memory exhaustion. The site admin can configure it to something else
// if they desire/require.
$expire_limit = get_config('system','expire_limit');
if (! intval($expire_limit)) {
$expire_limit = 5000;
}
$item_normal = item_normal();
$r = q("SELECT id FROM item
WHERE uid = %d
AND created < %s - INTERVAL %s
AND commented < %s - INTERVAL %s
AND item_retained = 0
AND item_thread_top = 1
AND resource_type = ''
AND item_starred = 0
$sql_extra $item_normal LIMIT $expire_limit ",
intval($uid),
db_utcnow(),
db_quoteinterval(intval($days) . ' DAY'),
db_utcnow(),
db_quoteinterval(intval($comment_days) . ' DAY')
);
if (! $r) {
return;
}
$r = fetch_post_tags($r);
foreach ($r as $item) {
// don't expire filed items
$terms = get_terms_oftype($item['term'],TERM_FILE);
if ($terms) {
retain_item($item['id']);
continue;
}
// don't expire pinned items either
$pinned = PConfig::Get($item['uid'], 'pinned', $item['item_type'], []);
if (in_array($item['mid'], $pinned)) {
retain_item($item['id']);
continue;
}
drop_item($item['id'], expire: true);
}
}
function retain_item($id) {
$r = q("update item set item_retained = 1 where id = %d",
intval($id)
);
}
// Items is array of item.id
function drop_items($items, $stage = DROPITEM_NORMAL, $force = false, $expire = false) {
$uid = 0;
if (count($items)) {
foreach ($items as $item) {
$owner = drop_item($item, $stage, $force, $expire);
if ($owner && (! $uid)) {
$uid = $owner;
}
}
}
// multiple threads may have been deleted, send an expire notification
if ($uid) {
Run::Summon(['Notifier', 'expire', $uid]);
}
}
// Delete item with given item $id. $interactive means we're running interactively, and must check
// permissions to carry out this act. If it is non-interactive, we are deleting something at the
// system's request and do not check permission. This is very important to know.
// Some deletion requests (those coming from remote sites) must be staged.
// $stage = 0 => unstaged
// $stage = 1 => set deleted flag on the item and perform intial notifications
// $stage = 2 => perform low level delete at a later stage
function drop_item($id, $stage = DROPITEM_NORMAL, $force = false, $uid = 0, $observer_hash = '', $expire = false) {
// locate item to be deleted
$r = q("SELECT * FROM item WHERE id = %d",
intval($id)
);
if ((! $r) || (intval($r[0]['item_deleted']) && ($stage === DROPITEM_NORMAL))) {
return false;
}
$item = array_shift($r);
drop_related($item, $stage, $force, $uid, $observer_hash, $expire);
$ok_to_delete = false;
// admin deletion
if (is_site_admin()) {
$ok_to_delete = true;
}
// owner deletion
if (local_channel() && local_channel() == $item['uid']) {
$ok_to_delete = true;
}
// remote delete when nobody is authenticated (called from Libzot)
if ($uid && intval($uid) === intval($item['uid'])) {
$ok_to_delete = true;
}
// author deletion
if ($observer_hash) {
$observer = ['xchan_hash' => $observer_hash];
}
else {
$observer = App::get_observer();
}
if ($observer && $observer['xchan_hash'] && ($observer['xchan_hash'] === $item['author_xchan'])) {
$ok_to_delete = true;
}
if ($observer && $observer['xchan_hash'] && ($observer['xchan_hash'] === $item['owner_xchan'])) {
$ok_to_delete = true;
}
if ($ok_to_delete) {
$r = q("UPDATE item SET item_deleted = 1 WHERE id = %d",
intval($item['id'])
);
if ($item['resource_type'] === 'event' ) {
q("delete from event where event_hash = '%s' and uid = %d",
dbesc($item['resource_id']),
intval($item['uid'])
);
}
if ($item['resource_type'] === 'photo' ) {
attach_delete($item['uid'], $item['resource_id'], true);
}
$arr = [
'item' => $item,
'stage' => $stage
];
/**
* @hooks drop_item
* Called when an 'item' is removed.
*/
Hook::call('drop_item', $arr);
$notify_id = intval($item['id']);
$items = q("select * from item where parent = %d and uid = %d",
intval($item['id']),
intval($item['uid'])
);
if ($items) {
foreach ($items as $i) {
delete_item_lowlevel($i, $stage, $force, $expire);
}
}
else {
delete_item_lowlevel($item, $stage, $force, $expire);
}
return true;
}
else {
return false;
}
}
// If somebody deletes a 'Create' activity, find any associated 'Add/Collection'
// activity and delete it. And vice versa.
function drop_related($item, $stage = DROPITEM_NORMAL, $force = false, $uid = 0, $observer_hash = '', $expire = false)
{
$allRelated = q("select * from item where parent_mid = '%s' and uid = %d",
dbesc($item['parent_mid']),
intval($item['uid'])
);
if (! $allRelated) {
return;
}
if ($item['verb'] === 'Add' && $item['tgt_type'] === 'Collection') {
$thisItem = json_decode($item['obj'],true);
if (is_array($thisItem)) {
$targetMid = $thisItem['object']['id'];
}
if (!$targetMid) {
return;
}
foreach ($allRelated as $related) {
if ($related['mid'] === $targetMid) {
drop_item($related['id'], $stage, $force, $uid, $observer_hash, $expire);
break;
}
}
}
else {
foreach ($allRelated as $related) {
if ($related['verb'] === 'Add' && str_contains($related['tgt_type'], 'Collection')) {
$thisItem = json_decode($related['obj'], true);
if (isset($thisItem['object']['id']) && $thisItem['object']['id'] === $item['mid']) {
drop_item($related['id'], $stage, $force, $uid, $observer_hash, $expire);
break;
}
}
}
}
}
function find_related($item)
{
$allRelated = q("select * from item where parent_mid = '%s' and uid = %d",
dbesc($item['parent_mid']),
intval($item['uid'])
);
if (! $allRelated) {
return false;
}
if ($item['verb'] === 'Add' && $item['tgt_type'] === 'Collection') {
$thisItem = json_decode($item['obj'],true);
if (is_array($thisItem)) {
$targetMid = $thisItem['object']['id'];
}
if (!$targetMid) {
return false;
}
foreach ($allRelated as $related) {
if ($related['mid'] === $targetMid) {
return $related;
}
}
}
else {
foreach ($allRelated as $related) {
if ($related['verb'] === 'Add' && str_contains($related['tgt_type'], 'Collection')) {
$thisItem = json_decode($related['obj'], true);
if (isset($thisItem['object']['id']) && $thisItem['object']['id'] === $item['mid']) {
return $related;
}
}
}
}
return false;
}
/**
* @warning This function does not check for permission and does not send
* notifications and does not check recursion.
* It merely destroys all resources associated with an item.
* Please do not use without a suitable wrapper.
*
* @param array $item
* @param int $stage
* @param bool $force
* @return bool
*/
function delete_item_lowlevel($item, $stage = DROPITEM_NORMAL, $force = false, $expire = false) {
logger('item: ' . $item['id'] . ' stage: ' . $stage . ' force: ' . ($force) ? 'true' : 'false', LOGGER_DATA);
if (!$expire) {
Tombstone::store($item['mid'], $item['uid']);
}
match ($stage) {
DROPITEM_PHASE2 => q("UPDATE item SET item_pending_remove = 1, body = '', title = '',
changed = '%s', edited = '%s' WHERE id = %d",
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($item['id'])
),
DROPITEM_PHASE1 => q("UPDATE item set item_deleted = 1, changed = '%s', edited = '%s' where id = %d",
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($item['id'])
),
default => q("DELETE FROM item WHERE id = %d",
intval($item['id'])
),
};
// immediately remove any undesired profile likes.
q("delete from likes where iid = %d and channel_id = %d",
intval($item['id']),
intval($item['uid'])
);
// network deletion request. Keep the message structure so that we can deliver delete notifications.
// Come back after several days to do the lowlevel delete (DROPITEM_PHASE2).
if ($stage == DROPITEM_PHASE1) {
return true;
}
$r = q("delete from term where otype = %d and oid = %d",
intval(TERM_OBJ_POST),
intval($item['id'])
);
q("delete from iconfig where iid = %d",
intval($item['id'])
);
$n = q("select id from item where mid = '%s'",
dbesc($item['mid'])
);
if (!$n) {
ObjCache::Delete($item['mid']);
}
q("delete from term where oid = %d and otype = %d",
intval($item['id']),
intval(TERM_OBJ_POST)
);
// remove delivery reports
$c = q("select channel_hash from channel where channel_id = %d limit 1",
intval($item['uid'])
);
if ($c) {
q("delete from dreport where dreport_xchan = '%s' and dreport_mid = '%s'",
dbesc($c[0]['channel_hash']),
dbesc($item['mid'])
);
}
// The threadlistener interface does not support uid/channel_id, so
// only remove threadlisteners when doing the second stage of a federated delete.
if ($stage === DROPITEM_PHASE2) {
ThreadListener::delete_by_target($item['mid']);
}
q("delete from notify where uid = %d and link = '%s'",
intval($item['uid']),
dbesc($item['mid'])
);
return true;
}
/**
* @brief Return the first post date.
*
* @param int $uid
* @param boolean $wall (optional) no longer used
* @return string|boolean date string, otherwise false
*/
function first_post_date($uid, $wall = false) {
$sql_extra = '';
switch (App::$module) {
case 'articles':
$sql_extra .= " and item_type = 7 ";
$item_normal = " and item.item_hidden = 0 and item.item_type = 7 and item.item_deleted = 0
and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
and item.item_blocked = 0 ";
break;
case 'channel':
$sql_extra = " and item_wall = 1 ";
default:
$item_normal = item_normal();
break;
}
$r = q("select id, created from item
where uid = %d and id = parent $item_normal $sql_extra
order by created asc limit 1",
intval($uid)
);
if ($r) {
return datetime_convert('UTC',date_default_timezone_get(),$r[0]['created'], 'Y-m-d');
}
return false;
}
/**
* modified posted_dates() {below} to arrange the list in years, which we'll eventually
* use to make a menu of years with collapsible sub-menus for the months instead of the
* current flat list of all representative dates.
*
* @param int $uid
* @param boolean $wall
* @param string $mindate
* @return array
*/
function list_post_dates($uid, $wall, $mindate) {
$ret = [];
$dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
if ($mindate) {
$dthen = datetime_convert('',date_default_timezone_get(), $mindate);
}
else {
$dthen = first_post_date($uid, $wall);
}
if (! $dthen) {
return [];
}
// If it's near the end of a long month, backup to the 28th so that in
// consecutive loops we'll always get a whole month difference.
if (intval(substr($dnow,8)) > 28) {
$dnow = substr($dnow,0,8) . '28';
}
if (intval(substr($dthen,8)) > 28) {
$dthen = substr($dthen,0,8) . '28';
}
// Starting with the current month, get the first and last days of every
// month down to and including the month of the first post
while (substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
$dyear = intval(substr($dnow,0,4));
$dstart = substr($dnow,0,8) . '01';
$dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
$start_month = datetime_convert('','',$dstart,'Y-m-d');
$end_month = datetime_convert('','',$dend,'Y-m-d');
$str = day_translate(datetime_convert('','',$dnow,'F'));
if (! $ret[$dyear]) {
$ret[$dyear] = [];
}
$ret[$dyear][] = [ $str, $end_month, $start_month ];
$dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
}
return $ret;
}
function posted_dates($uid,$wall) {
$dnow = datetime_convert('UTC',date_default_timezone_get(),'now','Y-m-d');
$dthen = first_post_date($uid,$wall);
if (! $dthen) {
return [];
}
// If it's near the end of a long month, backup to the 28th so that in
// consecutive loops we'll always get a whole month difference.
if (intval(substr($dnow,8)) > 28) {
$dnow = substr($dnow,0,8) . '28';
}
if (intval(substr($dthen,8)) > 28) {
$dthen = substr($dthen,0,8) . '28';
}
$ret = [];
// Starting with the current month, get the first and last days of every
// month down to and including the month of the first post
while (substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
$dstart = substr($dnow,0,8) . '01';
$dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
$start_month = datetime_convert('','',$dstart,'Y-m-d');
$end_month = datetime_convert('','',$dend,'Y-m-d');
$str = day_translate(datetime_convert('','',$dnow,'F Y'));
$ret[] = [$str,$end_month,$start_month];
$dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
}
return $ret;
}
/**
* @brief Extend an item array with the associated tags of the posts.
*
* @param array $items
* @return array Return the provided $items array after extended the posts with tags
*/
function fetch_post_tags($items) {
$tag_finder = [];
if ($items) {
foreach ($items as $item) {
if (is_array($item)) {
if (array_key_exists('item_id',$item)) {
if (! in_array($item['item_id'],$tag_finder)) {
$tag_finder[] = $item['item_id'];
}
}
else {
if (! in_array($item['id'],$tag_finder)) {
$tag_finder[] = $item['id'];
}
}
}
}
}
$tag_finder_str = implode(', ', $tag_finder);
if (strlen($tag_finder_str)) {
$tags = q("select * from term where oid in ( %s ) and otype = %d",
dbesc($tag_finder_str),
intval(TERM_OBJ_POST)
);
$imeta = q("select * from iconfig where iid in ( %s )",
dbesc($tag_finder_str)
);
}
for ($x = 0; $x < count((array)$items); $x ++) {
if ($tags) {
foreach ($tags as $t) {
if (array_key_exists('item_id',$items[$x])) {
if ($t['oid'] == $items[$x]['item_id']) {
if (! (isset($items[$x]['term']) && is_array($items[$x]['term']))) {
$items[$x]['term'] = [];
}
$items[$x]['term'][] = $t;
}
}
else {
if ($t['oid'] == $items[$x]['id']) {
if (! (isset($items[$x]['term']) && is_array($items[$x]['term']))) {
$items[$x]['term'] = [];
}
$items[$x]['term'][] = $t;
}
}
}
}
if ($imeta) {
foreach ($imeta as $i) {
if (array_key_exists('item_id',$items[$x])) {
if ($i['iid'] == $items[$x]['item_id']) {
if (! (isset($items[$x]['iconfig']) && is_array($items[$x]['iconfig']))) {
$items[$x]['iconfig'] = [];
}
$i['v'] = unserialise($i['v']);
$items[$x]['iconfig'][] = $i;
}
}
else {
if ($i['iid'] == $items[$x]['id']) {
if (! (isset($items[$x]['iconfig']) && is_array($items[$x]['iconfig']))) {
$items[$x]['iconfig'] = [];
}
$i['v'] = unserialise($i['v']);
$items[$x]['iconfig'][] = $i;
}
}
}
}
}
return $items;
}
/**
* @brief
*
* @param int $uid
* @param string $observer_hash
* @param array $arr
* @return array
*/
function zot_feed($uid, $observer_hash, $arr) {
$result = [];
$mindate = null;
$message_id = null;
$wall = true;
require_once('include/security.php');
$encoding = ((array_key_exists('encoding',$arr)) ? $arr['encoding'] : 'zot');
if(array_key_exists('mindate',$arr)) {
$mindate = datetime_convert('UTC','UTC',$arr['mindate']);
}
if(array_key_exists('message_id',$arr)) {
$message_id = $arr['message_id'];
}
if(array_key_exists('wall',$arr)) {
$wall = intval($arr['wall']);
}
if(! $mindate)
$mindate = NULL_DATE;
$mindate = dbesc($mindate);
logger('zot_feed: requested for uid ' . $uid . ' from observer ' . $observer_hash, LOGGER_DEBUG);
if($message_id)
logger('message_id: ' . $message_id,LOGGER_DEBUG);
if(! perm_is_allowed($uid, $observer_hash, 'view_stream')) {
logger('zot_feed: permission denied.');
return $result;
}
if(! Channel::is_system($uid))
$sql_extra = item_permissions_sql($uid,$observer_hash);
$limit = " LIMIT 5000 ";
if($mindate > NULL_DATE) {
$sql_extra .= " and ( created > '$mindate' or changed > '$mindate' ) ";
}
if($message_id) {
$sql_extra .= " and mid = '" . dbesc($message_id) . "' ";
$limit = '';
}
if($wall) {
$sql_extra .= " and item_wall = 1 ";
}
$items = [];
$item_normal = item_normal();
if(Channel::is_system($uid)) {
$nonsys_uids = q("SELECT channel_id FROM channel WHERE channel_system = 0");
$nonsys_uids_str = ids_to_querystr($nonsys_uids,'channel_id');
$r = q("SELECT parent FROM item
WHERE uid IN ( %s )
AND item_private = 0
$item_normal
$sql_extra ORDER BY created ASC $limit",
intval($nonsys_uids_str)
);
}
else {
$r = q("SELECT parent FROM item
WHERE uid = %d
$item_normal
$sql_extra ORDER BY created ASC $limit",
intval($uid)
);
}
$parents = [];
if($r) {
foreach($r as $rv) {
if(array_key_exists($rv['parent'],$parents))
continue;
$parents[$rv['parent']] = $rv;
if(count($parents) > 200)
break;
}
$parents_str = ids_to_querystr($parents,'parent');
$sys_query = ((Channel::is_system($uid)) ? $sql_extra : '');
$item_normal = item_normal();
$items = q("SELECT item.*, item.id AS item_id FROM item
WHERE item.parent IN ( %s ) $item_normal $sys_query ",
dbesc($parents_str)
);
}
if($items) {
xchan_query($items);
$items = fetch_post_tags($items);
require_once('include/conversation.php');
$items = conv_sort($items,'ascending');
}
else
$items = [];
logger('zot_feed: number items: ' . count($items),LOGGER_DEBUG);
foreach($items as $item) {
if($encoding === 'zot')
$result[] = encode_item($item);
elseif($encoding === 'activitystreams')
$result[] = Activity::encode_activity($item, true);
}
return $result;
}
function items_fetch($arr,$channel = null,$observer_hash = null,$client_mode = CLIENT_MODE_NORMAL,$module = 'stream') {
$result = [ 'success' => false ];
$uid = 0;
$sql_extra = '';
$sql_nets = '';
$sql_options = '';
$sql_extra2 = '';
$sql_extra3 = '';
$def_acl = '';
$item_uids = ' true ';
$item_normal = item_normal();
if (isset($arr['uid']) && $arr['uid']) {
$uid = $arr['uid'];
}
if ($channel) {
$uid = $channel['channel_id'];
$uidhash = $channel['channel_hash'];
$item_uids = " item.uid = " . intval($uid) . " ";
}
if (! (isset($arr['include_follow']) && intval($arr['include_follow']))) {
$item_normal .= " and not verb in ( 'Follow' , 'Ignore' ) ";
}
if (isset($arr['star']) && $arr['star']) {
$sql_options .= " and item_starred = 1 ";
}
if (isset($arr['wall']) && $arr['wall']) {
$sql_options .= " and item_wall = 1 ";
}
if (isset($arr['item_id']) && $arr['item_id']) {
$sql_options .= " and parent = " . intval($arr['item_id']) . " ";
}
if (isset($arr['mid']) && $arr['mid']) {
$sql_options .= " and parent_mid = '" . dbesc($arr['mid']) . "' ";
}
$sql_extra = " AND item.parent IN ( SELECT parent FROM item WHERE item_thread_top = 1 $sql_options $item_normal ) ";
if (!empty($arr['since_id'])) {
$sql_extra .= " and item.id > " . $arr['since_id'] . " ";
}
if (!empty($arr['cat'])) {
$sql_extra .= protect_sprintf(term_query('item', $arr['cat'], TERM_CATEGORY));
}
if ($uid && !empty($arr['gid'])) {
$r = q("SELECT * FROM pgrp WHERE id = %d AND uid = %d LIMIT 1",
intval($arr['group']),
intval($uid)
);
if (! $r) {
$result['message'] = t('Access list not found.');
return $result;
}
$contact_str = '';
$contacts = AccessList::members($uid,$r[0]['id']);
if ($contacts) {
foreach ($contacts as $c) {
if ($contact_str) {
$contact_str .= ',';
}
$contact_str .= "'" . $c['xchan'] . "'";
}
}
else {
$contact_str = ' 0 ';
$result['message'] = t('Privacy group is empty.');
return $result;
}
$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND (( author_xchan IN ( $contact_str ) OR owner_xchan in ( $contact_str)) or allow_gid like '" . protect_sprintf('%<' . dbesc($r[0]['hash']) . '>%') . "' ) and id = parent $item_normal ) ";
$x = AccessList::rec_byhash($uid,$r[0]['hash']);
$result['headline'] = sprintf( t('Access list: %s'),$x['gname']);
}
elseif (isset($arr['cid']) && $arr['cid'] && $uid) {
$r = q("SELECT abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash where abook_id = %d and abook_channel = %d and abook_blocked = 0 limit 1",
intval($arr['cid']),
intval(local_channel())
);
if ($r) {
$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND uid = " . intval($arr['uid']) . " AND ( author_xchan = '" . dbesc($r[0]['abook_xchan']) . "' or owner_xchan = '" . dbesc($r[0]['abook_xchan']) . "' ) $item_normal ) ";
$result['headline'] = sprintf( t('Connection: %s'),$r[0]['xchan_name']);
}
else {
$result['message'] = t('Channel not found.');
return $result;
}
}
if ($channel && intval($arr['compat']) === 1) {
$sql_extra = " AND author_xchan = '" . $channel['channel_hash'] . "' and item_private = 0 $item_normal ";
}
if ($arr['datequery']) {
$sql_extra3 .= protect_sprintf(sprintf(" AND item.created <= '%s' ", dbesc(datetime_convert('UTC','UTC',$arr['datequery']))));
}
if ($arr['datequery2']) {
$sql_extra3 .= protect_sprintf(sprintf(" AND item.created >= '%s' ", dbesc(datetime_convert('UTC','UTC',$arr['datequery2']))));
}
if ($arr['search']) {
if (str_starts_with($arr['search'], '#')) {
$sql_extra .= term_query('item',substr($arr['search'],1),TERM_HASHTAG,TERM_COMMUNITYTAG);
}
else {
$sql_extra .= sprintf(" AND item.body like '%s' ",
dbesc(protect_sprintf('%' . $arr['search'] . '%'))
);
}
}
if (isset($arr['file']) && strlen($arr['file'])) {
$sql_extra .= term_query('item',$arr['file'],TERM_FILE);
}
if (isset($arr['conv']) && $arr['conv'] && $channel) {
$sql_extra .= sprintf(" AND parent IN (SELECT distinct parent from item where ( author_xchan like '%s' or item_mentionsme = 1 )) ",
dbesc(protect_sprintf($uidhash))
);
}
if (($client_mode & CLIENT_MODE_UPDATE) && (! ($client_mode & CLIENT_MODE_LOAD))) {
// only setup pagination on initial page view
$pager_sql = '';
}
else {
if (! (isset($arr['total']) && $arr['total']) ) {
$itemspage = ((isset($arr['records'])) ? $arr['records'] : 0);
if (! $itemspage) {
$itemspage = (($channel) ? get_pconfig($uid,'system','itemspage') : 20);
App::set_pager_itemspage(((intval($itemspage)) ? $itemspage : 20));
$pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval(App::$pager['itemspage']), intval(App::$pager['start']));
}
}
}
if (isset($arr['start']) && isset($arr['records'])) {
$pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval($arr['records']), intval($arr['start']));
}
if (array_key_exists('cmin',$arr) || array_key_exists('cmax',$arr)) {
if (($arr['cmin'] != 0) || ($arr['cmax'] != 99)) {
// Not everybody who shows up in the stream will be in your address book.
// By default, those that aren't are assumed to have closeness = 99; but this isn't
// recorded anywhere. So if cmax is 99, we'll open the search up to anybody in
// the stream with a NULL address book entry.
$sql_nets .= " AND ";
if ($arr['cmax'] == 99)
$sql_nets .= " ( ";
$sql_nets .= "( abook.abook_closeness >= " . intval($arr['cmin']) . " ";
$sql_nets .= " AND abook.abook_closeness <= " . intval($arr['cmax']) . " ) ";
if ($arr['cmax'] == 99)
$sql_nets .= " OR abook.abook_closeness IS NULL ) ";
}
}
$simple_update = (($client_mode & CLIENT_MODE_UPDATE) ? " and item.item_unseen = 1 " : '');
if ($client_mode & CLIENT_MODE_LOAD) {
$simple_update = '';
}
$sql_extra .= item_permissions_sql($channel['channel_id'],$observer_hash);
if (isset($arr['pages']) && $arr['pages']) {
$item_restrict = " AND item_type = " . ITEM_TYPE_WEBPAGE . " ";
}
else {
$item_restrict = " AND item_type = 0 ";
}
if (isset($arr['item_type']) && $arr['item_type'] === '*') {
$item_restrict = '';
}
if (((isset($arr['compat']) && $arr['compat']) || ((isset($arr['nouveau']) && $arr['nouveau']) && ($client_mode & CLIENT_MODE_LOAD))) && $channel) {
// "New Item View" - show all items unthreaded in reverse created date order
if (isset($arr['total']) && $arr['total']) {
$items = q("SELECT count(item.id) AS total FROM item
WHERE $item_uids $item_restrict
$simple_update
$sql_extra $sql_nets $sql_extra3"
);
if ($items) {
return intval($items[0]['total']);
}
return 0;
}
$items = q("SELECT item.*, item.id AS item_id FROM item
WHERE $item_uids $item_restrict
$simple_update
$sql_extra $sql_nets $sql_extra3
ORDER BY item.received DESC $pager_sql"
);
xchan_query($items);
$items = fetch_post_tags($items);
}
else {
// Normal conversation view
if (isset($arr['order']) && $arr['order'] === 'post') {
$ordering = "created";
}
else {
$ordering = "commented";
}
if (($client_mode & CLIENT_MODE_LOAD) || ($client_mode == CLIENT_MODE_NORMAL)) {
// Fetch a page full of parent items for this page
$r = q("SELECT distinct item.id AS item_id, item.$ordering FROM item
left join abook on item.author_xchan = abook.abook_xchan
WHERE $item_uids $item_restrict
AND item.parent = item.id
and (abook.abook_blocked = 0 or abook.abook_flags is null)
$sql_extra3 $sql_extra $sql_nets
ORDER BY item.$ordering DESC $pager_sql "
);
}
else {
// update
$r = q("SELECT item.parent AS item_id FROM item
left join abook on item.author_xchan = abook.abook_xchan
WHERE $item_uids $item_restrict $simple_update
and (abook.abook_blocked = 0 or abook.abook_flags is null)
$sql_extra3 $sql_extra $sql_nets "
);
}
// Then fetch all the children of the parents that are on this page
if ($r) {
$parents_str = ids_to_querystr($r,'item_id');
if (isset($arr['top']) && $arr['top']) {
$sql_extra = ' and id = parent ' . $sql_extra;
}
$items = q("SELECT item.*, item.id AS item_id FROM item
WHERE $item_uids $item_restrict
AND item.parent IN ( %s )
$sql_extra ",
dbesc($parents_str ?: '0')
);
xchan_query($items);
$items = fetch_post_tags($items);
require_once('include/conversation.php');
$items = conv_sort($items,$ordering);
}
else {
$items = [];
}
}
return $items;
}
function webpage_to_namespace($webpage) {
if ($webpage == ITEM_TYPE_WEBPAGE)
$page_type = 'WEBPAGE';
elseif ($webpage == ITEM_TYPE_BLOCK)
$page_type = 'BUILDBLOCK';
elseif ($webpage == ITEM_TYPE_PDL)
$page_type = 'PDL';
elseif ($webpage == ITEM_TYPE_CARD)
$page_type = 'CARD';
elseif ($webpage == ITEM_TYPE_ARTICLE)
$page_type = 'ARTICLE';
elseif ($webpage == ITEM_TYPE_DOC)
$page_type = 'docfile';
else
$page_type = 'unknown';
return $page_type;
}
function update_remote_id($channel,$post_id,$webpage,$pagetitle,$namespace,$remote_id,$mid) {
if (! $post_id) {
return;
}
$page_type = webpage_to_namespace($webpage);
if ($page_type == 'unknown' && $namespace && $remote_id) {
$page_type = $namespace;
$pagetitle = $remote_id;
}
else {
$page_type = '';
}
if ($page_type) {
// store page info as an alternate message_id so we can access it via
// https://sitename/page/$channelname/$pagetitle
// if no pagetitle was given or it couldn't be transliterated into a url, use the first
// sixteen bytes of the mid - which makes the link portable and not quite as daunting
// as the entire mid. If it were the post_id the link would be less portable.
$post_id = intval($post_id);
IConfig::Set(
$post_id,
'system',
$page_type,
($pagetitle) ?: substr($mid,0,16),
false
);
}
}
/**
* @brief Change access control for item with message_id $mid and channel_id $uid.
*
* @param string $xchan_hash
* @param string $mid
* @param int $uid
*/
function item_add_cid($xchan_hash, $mid, $uid) {
$r = q("select id from item where mid = '%s' and uid = %d and allow_cid like '%s'",
dbesc($mid),
intval($uid),
dbesc('<' . $xchan_hash . '>')
);
if (! $r) {
$r = q("update item set allow_cid = concat(allow_cid,'%s') where mid = '%s' and uid = %d",
dbesc('<' . $xchan_hash . '>'),
dbesc($mid),
intval($uid)
);
}
}
function item_remove_cid($xchan_hash,$mid,$uid) {
$r = q("select allow_cid from item where mid = '%s' and uid = %d and allow_cid like '%s'",
dbesc($mid),
intval($uid),
dbesc('<' . $xchan_hash . '>')
);
if ($r) {
$x = q("update item set allow_cid = '%s' where mid = '%s' and uid = %d",
dbesc(str_replace('<' . $xchan_hash . '>','',$r[0]['allow_cid'])),
dbesc($mid),
intval($uid)
);
}
}
// Set item permissions based on results obtained from linkify_tags()
function set_linkified_perms($linkified, &$str_contact_allow, &$str_group_allow, $profile_uid, $parent_item, &$private) {
$first_access_tag = true;
foreach($linkified as $x) {
$access_tag = $x['success']['access_tag'];
if(($access_tag) && (! $parent_item)) {
logger('access_tag: ' . print_r($access_tag,true), LOGGER_DATA);
if ($first_access_tag && (! get_pconfig($profile_uid,'system','no_private_mention_acl_override'))) {
// This is a tough call, hence configurable. The issue is that one can type in a @!privacy mention
// and also have a default ACL (perhaps from viewing a collection) and could be suprised that the
// privacy mention wasn't the only recipient. So the default is to wipe out the existing ACL if a
// private mention is found. This can be over-ridden if you wish private mentions to be in
// addition to the current ACL settings.
$str_contact_allow = '';
$str_group_allow = '';
$first_access_tag = false;
}
if(str_starts_with($access_tag, 'cid:')) {
$str_contact_allow .= '<' . substr($access_tag,4) . '>';
$access_tag = '';
$private = 2;
}
elseif(str_starts_with($access_tag, 'gid:')) {
$str_group_allow .= '<' . substr($access_tag,4) . '>';
$access_tag = '';
$private = 2;
}
}
}
}
/**
* We can't trust ITEM_ORIGIN to tell us if this is a local comment
* which needs to be relayed, because it was misconfigured at one point for several
* months and set for some remote items (in alternate delivery chains). This could
* cause looping, so use this hackish but accurate method.
*
* @param array $item
* @return boolean
*/
function comment_local_origin($item) {
if(stripos($item['mid'], App::get_hostname()) && ($item['parent'] != $item['id']))
return true;
return false;
}
function send_profile_photo_activity($channel,$photo,$profile) {
// for now only create activities for the default profile
if (! (isset($profile) && isset($profile['is_default']) && intval($profile['is_default']))) {
return;
}
$arr = [];
$arr['item_thread_top'] = 1;
$arr['item_origin'] = 1;
$arr['item_wall'] = 1;
$arr['obj_type'] = ACTIVITY_OBJ_NOTE;
$arr['verb'] = ACTIVITY_CREATE;
$arr['uuid'] = new_uuid();
$arr['mid'] = z_root() . '/item/' . $arr['uuid'];
if(stripos($profile['gender'],t('female')) !== false)
$t = t('%1$s updated her %2$s');
elseif(stripos($profile['gender'],t('male')) !== false)
$t = t('%1$s updated his %2$s');
else
$t = t('%1$s updated their %2$s');
$ptext = '[zrl=' . z_root() . '/photos/' . $channel['channel_address'] . '/image/' . $photo['resource_id'] . ']' . t('profile photo') . '[/zrl]';
$ltext = '[zrl=' . z_root() . '/profile/' . $channel['channel_address'] . ']' . '[zmg=150x150]' . z_root() . '/photo/' . $photo['resource_id'] . '-4[/zmg][/zrl]';
$arr['body'] = sprintf($t,$channel['channel_name'],$ptext) . "\n\n" . $ltext;
$arr['obj'] = [
'type' => ACTIVITY_OBJ_NOTE,
'published' => datetime_convert('UTC', 'UTC', 'now', ISO8601),
'updated' => datetime_convert('UTC', 'UTC', 'now', ISO8601),
'id' => $arr['mid'],
'url' => [ 'type' => 'Link', 'mediaType' => $photo['mimetype'], 'href' => z_root() . '/photo/profile/l/' . $channel['channel_id'] ],
'source' => [ 'content' => $arr['body'], 'mediaType' => 'text/x-multicode' ],
'content' => bbcode($arr['body']),
'actor' => Activity::actorEncode($channel,false),
];
$acl = new AccessControl($channel);
$x = $acl->get();
$arr['allow_cid'] = $x['allow_cid'];
$arr['allow_gid'] = $x['allow_gid'];
$arr['deny_cid'] = $x['deny_cid'];
$arr['deny_gid'] = $x['deny_gid'];
$arr['uid'] = $channel['channel_id'];
$arr['aid'] = $channel['channel_account_id'];
$arr['owner_xchan'] = $channel['channel_hash'];
$arr['author_xchan'] = $channel['channel_hash'];
post_activity_item($arr);
}
function sync_an_item($channel_id,$item_id) {
$r = q("select * from item where id = %d",
intval($item_id)
);
if($r) {
if (intval($r[0]['parent']) !== intval($r[0]['id'])) {
// sync the parent also. This prevents mis-deliveries from sync packets arriving out of order.
$y = q("select * from item where id = %d",
intval($r[0]['parent'])
);
if ($y) {
$r = array_merge($y,$r);
}
}
$encoded = [];
xchan_query($r);
$sync_items = fetch_post_tags($r);
if ($sync_items) {
foreach ($sync_items as $i) {
$encoded[] = encode_item($i,true);
}
}
Libsync::build_sync_packet($channel_id, ['item' => $encoded]);
}
}
function list_attached_local_files($body) {
$files = [];
$match = [];
// match img and zmg image links
if (preg_match_all("/\[[zi]mg(.*?)](.*?)\[\/[zi]mg]/",$body,$match)) {
$images = $match[2];
if ($images) {
foreach ($images as $image) {
if (! stristr($image,z_root() . '/photo/')) {
continue;
}
$image_uri = substr($image,strrpos($image,'/') + 1);
if (str_contains($image_uri, '-')) {
$image_uri = substr($image_uri,0, strrpos($image_uri,'-'));
}
if (str_contains($image_uri, '.')) {
$image_uri = substr($image_uri,0, strpos($image_uri,'.'));
}
if ($image_uri) {
$files[] = $image_uri;
}
}
}
}
if (preg_match_all("/\[attachment](.*?)\[\/attachment]/",$body,$match)) {
$attaches = $match[1];
if ($attaches) {
foreach ($attaches as $attach) {
$hash = substr($attach,0,strpos($attach,','));
if ($hash) {
$files[] = $hash;
}
}
}
}
return $files;
}
function fix_attached_permissions($uid,$body,$str_contact_allow,$str_group_allow,$str_contact_deny,$str_group_deny,$token = EMPTY_STR) {
$files = list_attached_local_files($body);
if (! $files) {
return;
}
foreach ($files as $file) {
$attach_q = q("select id, hash, flags, is_photo, allow_cid, allow_gid, deny_cid, deny_gid from attach where hash = '%s' and uid = %d",
dbesc($file),
intval($uid)
);
if (! $attach_q) {
continue;
}
$attach = array_shift($attach_q);
$new_public = !(($str_contact_allow || $str_group_allow || $str_contact_deny || $str_group_deny));
$existing_public = !(($attach['allow_cid'] || $attach['allow_gid'] || $attach['deny_cid'] || $attach['deny_gid']));
if ($existing_public) {
// permissions have already been fixed and they are public. There's nothing for us to do.
continue;
}
// if flags & 1, the attachment was uploaded directly into a post and needs to have permissions corrected
// or - if it is a private file and a new token was generated, we'll need to add the token to the ACL.
if (((intval($attach['flags']) & 1) !== 1) && (! $token)) {
continue;
}
$item_private = 0;
if ($new_public === false) {
$item_private = (($str_group_allow || ($str_contact_allow && substr_count($str_contact_allow,'<') > 2)) ? 1 : 2);
// preserve any existing tokens that may have been set for this file
$token_matches = null;
if (preg_match_all('/<token:(.*?)>/',$attach['allow_cid'],$token_matches, PREG_SET_ORDER)) {
foreach ($token_matches as $m) {
$tok = '<token:' . $m[1] . '>';
if (!str_contains($str_contact_allow, $tok)) {
$str_contact_allow .= $tok;
}
}
}
if ($token) {
$str_contact_allow .= '<token:' . $token . '>';
}
}
q("update attach SET allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s', flags = 0
WHERE id = %d AND uid = %d",
dbesc($str_contact_allow),
dbesc($str_group_allow),
dbesc($str_contact_deny),
dbesc($str_group_deny),
intval($attach['id']),
intval($uid)
);
if ($attach['is_photo']) {
$r = q("UPDATE photo SET allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s'
WHERE resource_id = '%s' AND uid = %d ",
dbesc($str_contact_allow),
dbesc($str_group_allow),
dbesc($str_contact_deny),
dbesc($str_group_deny),
dbesc($file),
intval($uid)
);
$r = q("UPDATE item SET allow_cid = '%s', allow_gid = '%s', deny_cid = '%s', deny_gid = '%s', item_private = %d
WHERE resource_id = '%s' AND 'resource_type' = 'photo' AND uid = %d",
dbesc($str_contact_allow),
dbesc($str_group_allow),
dbesc($str_contact_deny),
dbesc($str_group_deny),
intval($item_private),
dbesc($file),
intval($uid)
);
}
}
}
function item_create_edit_activity($post) {
// obsolete and not maintained, left in case it is ever needed again
if((! $post) || (! $post['item']) || ($post['item']['item_type'] != ITEM_TYPE_POST))
return;
$update_item = $post['item'];
$new_item = $update_item;
$author = q("select * from xchan where xchan_hash = '%s' limit 1",
dbesc($new_item['author_xchan'])
);
if($author)
$item_author = $author[0];
$new_item['id'] = 0;
$new_item['parent'] = 0;
$new_item['uuid'] = new_uuid();
$new_item['mid'] = z_root() . '/item/' . $new_item['uuid'];
$new_item['body'] = sprintf( t('[Edited %s]'), (($update_item['item_thread_top']) ? t('Post','edit_activity') : t('Comment','edit_activity')));
$new_item['body'] .= "\n\n";
$new_item['body'] .= $update_item['body'];
$new_item['sig'] = '';
$new_item['verb'] = ACTIVITY_UPDATE;
$new_item['item_thread_top'] = 0;
$new_item['created'] = $new_item['edited'] = datetime_convert();
$new_item['obj_type'] = (($update_item['item_thread_top']) ? ACTIVITY_OBJ_NOTE : ACTIVITY_OBJ_COMMENT);
$new_item['obj'] = json_encode([
'type' => $new_item['obj_type'],
'id' => $update_item['mid'],
'parent' => $update_item['parent_mid'],
'link' => [['rel' => 'alternate','type' => 'text/html', 'href' => $update_item['plink']]],
'title' => $update_item['title'],
'content' => $update_item['body'],
'created' => $update_item['created'],
'edited' => $update_item['edited'],
'author' => [
'name' => $item_author['xchan_name'],
'address' => $item_author['xchan_addr'],
'guid' => $item_author['xchan_guid'],
'guid_sig' => $item_author['xchan_guid_sig'],
'link' => [
['rel' => 'alternate', 'type' => 'text/html', 'href' => $item_author['xchan_url']],
['rel' => 'photo', 'type' => $item_author['xchan_photo_mimetype'], 'href' => $item_author['xchan_photo_m']]],
],
],JSON_UNESCAPED_SLASHES);
$x = post_activity_item($new_item);
$post_id = $x['id'];
if($post_id) {
$r = q("select * from item where id = %d",
intval($post_id)
);
if($r) {
xchan_query($r);
$sync_item = fetch_post_tags($r);
Libsync::build_sync_packet($new_item['uid'], ['item' => [encode_item($sync_item[0],true)]]);
}
}
Run::Summon([ 'Notifier', 'edit_activity', $post_id ]);
}
/**
* @brief copies an entire conversation from the pubstream to this channel's stream
* which will allow you to interact with it.
*/
function copy_of_pubitem($channel,$mid) {
$result = null;
$syschan = Channel::get_system();
logger('copy_of_pubitem: ' . $channel['channel_id'] . ' mid: ' . $mid);
$r = q("select * from item where mid = '%s' and uid = %d limit 1",
dbesc($mid),
intval($channel['channel_id'])
);
if ($r) {
logger('exists');
$item = fetch_post_tags($r);
return array_shift($item);
}
// this query is used for the global public stream
$r = q("select * from item where parent_mid = ( select parent_mid from item where mid = '%s' and uid = %d ) order by id ",
dbesc($mid),
intval($syschan['channel_id'])
);
// if that failed, try to find entries that would have been posted in the local public stream
if (! $r) {
$r = q("select * from item where parent_mid = ( select distinct (parent_mid) from item where mid = '%s' and item_wall = 1 and item_private = 0 ) order by id ",
dbesc($mid),
intval($syschan['channel_id'])
);
}
if ($r) {
$items = fetch_post_tags($r);
foreach ($items as $rv) {
$d = q("select id from item where mid = '%s' and uid = %d limit 1",
dbesc($rv['mid']),
intval($channel['channel_id'])
);
if ($d) {
logger('mid: ' . $rv['mid'] . ' already copied. Continuing.');
continue;
}
unset($rv['id']);
unset($rv['parent']);
$rv['aid'] = $channel['channel_account_id'];
$rv['uid'] = $channel['channel_id'];
$rv['item_wall'] = 0;
$rv['item_origin'] = 0;
$x = item_store($rv, deliver: false, addAndSync: false);
if ($x['item_id'] && $x['item']['mid'] === $mid) {
$result = $x['item'];
sync_an_item($channel['channel_id'],$x['item_id']);
}
}
}
else {
logger('copy query failed.');
}
return $result;
}
function reverse_activity_mid($string)
{
return str_replace(z_root() . '/activity/', z_root() . '/item/', $string);
}
function set_activity_mid($string)
{
return str_replace(z_root() . '/item/', z_root() . '/activity/', $string);
}