Hubzilla core code
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<?php
namespace Zotlabs\Module;
use App;
use Zotlabs\Web\Controller;
use Zotlabs\Lib\PermissionDescription;
use Zotlabs\Web\HTTPSig;
use Zotlabs\Lib\Libzot;
require_once('include/items.php');
require_once('include/security.php');
require_once('include/conversation.php');
require_once('include/acl_selectors.php');
require_once('include/opengraph.php');
/**
* @brief Channel Controller
*
*/
class Channel extends Controller {
function init() {
if(in_array(substr($_GET['search'],0,1),[ '@', '!', '?']))
goaway('search' . '?f=&search=' . $_GET['search']);
$which = null;
if(argc() > 1)
$which = argv(1);
if(! $which) {
if(local_channel()) {
$channel = App::get_channel();
if($channel && $channel['channel_address'])
$which = $channel['channel_address'];
}
}
if(! $which) {
notice( t('You must be logged in to see this page.') . EOL );
return;
}
$profile = 0;
$channel = App::get_channel();
if((local_channel()) && (argc() > 2) && (argv(2) === 'view')) {
$which = $channel['channel_address'];
$profile = argv(1);
}
$channel = channelx_by_nick($which);
if(! $channel) {
http_status_exit(404, 'Not found');
}
// handle zot6 channel discovery
if(Libzot::is_zot_request()) {
$sigdata = HTTPSig::verify(file_get_contents('php://input'));
if($sigdata && $sigdata['signer'] && $sigdata['header_valid']) {
$data = json_encode(Libzot::zotinfo([ 'address' => $channel['channel_address'], 'target_url' => $sigdata['signer'] ]));
$s = q("select site_crypto, hubloc_sitekey from site left join hubloc on hubloc_url = site_url where hubloc_id_url = '%s' and hubloc_network = 'zot6' limit 1",
dbesc($sigdata['signer'])
);
if($s) {
$data = json_encode(crypto_encapsulate($data,$s[0]['hubloc_sitekey'],Libzot::best_algorithm($s[0]['site_crypto'])));
}
}
else {
$data = json_encode(Libzot::zotinfo([ 'address' => $channel['channel_address'] ]));
}
$headers = [
'Content-Type' => 'application/x-zot+json',
'Digest' => HTTPSig::generate_digest_header($data),
'(request-target)' => strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI']
];
$h = HTTPSig::create_sig($headers,$channel['channel_prvkey'],channel_url($channel));
HTTPSig::set_headers($h);
echo $data;
killme();
}
if((local_channel()) && (argc() > 2) && (argv(2) === 'view')) {
$which = $channel['channel_address'];
$profile = argv(1);
}
head_add_link( [
'rel' => 'alternate',
'type' => 'application/atom+xml',
'title' => t('Posts and comments'),
'href' => z_root() . '/feed/' . $which
]);
head_add_link( [
'rel' => 'alternate',
'type' => 'application/atom+xml',
'title' => t('Only posts'),
'href' => z_root() . '/feed/' . $which . '?f=&top=1'
]);
// Run profile_load() here to make sure the theme is set before
// we start loading content
profile_load($which,$profile);
// Add Opengraph markup
$mid = ((x($_REQUEST,'mid')) ? $_REQUEST['mid'] : '');
if(strpos($mid,'b64.') === 0)
$mid = @base64url_decode(substr($mid,4));
if($mid)
$r = q("SELECT * FROM item WHERE mid = '%s' AND uid = %d AND item_private = 0 LIMIT 1",
dbesc($mid),
intval($channel['channel_id'])
);
opengraph_add_meta($r ? $r[0] : [], $channel);
}
function get($update = 0, $load = false) {
$noscript_content = get_config('system', 'noscript_content', '1');
if($load)
$_SESSION['loadtime'] = datetime_convert();
$category = $datequery = $datequery2 = '';
$mid = ((x($_REQUEST,'mid')) ? $_REQUEST['mid'] : '');
if(strpos($mid,'b64.') === 0)
$decoded = @base64url_decode(substr($mid,4));
if($decoded)
$mid = $decoded;
$datequery = ((x($_GET,'dend') && is_a_date_arg($_GET['dend'])) ? notags($_GET['dend']) : '');
$datequery2 = ((x($_GET,'dbegin') && is_a_date_arg($_GET['dbegin'])) ? notags($_GET['dbegin']) : '');
if(observer_prohibited(true)) {
return login();
}
$category = ((x($_REQUEST,'cat')) ? $_REQUEST['cat'] : '');
$hashtags = ((x($_REQUEST,'tag')) ? $_REQUEST['tag'] : '');
$order = ((x($_GET,'order')) ? notags($_GET['order']) : 'post');
$static = ((array_key_exists('static',$_REQUEST)) ? intval($_REQUEST['static']) : 0);
$search = ((x($_GET,'search')) ? $_GET['search'] : EMPTY_STR);
$groups = array();
$o = '';
if($update) {
// Ensure we've got a profile owner if updating.
App::$profile['profile_uid'] = App::$profile_uid = $update;
}
$is_owner = (((local_channel()) && (App::$profile['profile_uid'] == local_channel())) ? true : false);
$channel = App::get_channel();
$observer = App::get_observer();
$ob_hash = (($observer) ? $observer['xchan_hash'] : '');
$perms = get_all_perms(App::$profile['profile_uid'],$ob_hash);
if(! $perms['view_stream']) {
// We may want to make the target of this redirect configurable
if($perms['view_profile']) {
notice( t('Insufficient permissions. Request redirected to profile page.') . EOL);
goaway (z_root() . "/profile/" . App::$profile['channel_address']);
}
notice( t('Permission denied.') . EOL);
return;
}
if(! $update) {
nav_set_selected('Channel Home');
$static = channel_manual_conv_update(App::$profile['profile_uid']);
// search terms header
if($search) {
$o .= replace_macros(get_markup_template("section_title.tpl"),array(
'$title' => t('Search Results For:') . ' ' . htmlspecialchars($search, ENT_COMPAT,'UTF-8')
));
}
if($channel && $is_owner) {
$channel_acl = array(
'allow_cid' => $channel['channel_allow_cid'],
'allow_gid' => $channel['channel_allow_gid'],
'deny_cid' => $channel['channel_deny_cid'],
'deny_gid' => $channel['channel_deny_gid']
);
}
else {
$channel_acl = [ 'allow_cid' => '', 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '' ];
}
if($perms['post_wall']) {
$x = array(
'is_owner' => $is_owner,
'allow_location' => ((($is_owner || $observer) && (intval(get_pconfig(App::$profile['profile_uid'],'system','use_browser_location')))) ? true : false),
'default_location' => (($is_owner) ? App::$profile['channel_location'] : ''),
'nickname' => App::$profile['channel_address'],
'lockstate' => (((strlen(App::$profile['channel_allow_cid'])) || (strlen(App::$profile['channel_allow_gid'])) || (strlen(App::$profile['channel_deny_cid'])) || (strlen(App::$profile['channel_deny_gid']))) ? 'lock' : 'unlock'),
'acl' => (($is_owner) ? populate_acl($channel_acl,true, PermissionDescription::fromGlobalPermission('view_stream'), get_post_aclDialogDescription(), 'acl_dialog_post') : ''),
'permissions' => $channel_acl,
'showacl' => (($is_owner) ? 'yes' : ''),
'bang' => '',
'visitor' => (($is_owner || $observer) ? true : false),
'profile_uid' => App::$profile['profile_uid'],
'editor_autocomplete' => true,
'bbco_autocomplete' => 'bbcode',
'bbcode' => true,
'jotnets' => true,
'reset' => t('Reset form')
);
$o .= status_editor($a,$x,false,'Channel');
}
}
/**
* Get permissions SQL - if $remote_contact is true, our remote user has been pre-verified and we already have fetched his/her groups
*/
$item_normal = item_normal();
$item_normal_update = item_normal_update();
$sql_extra = item_permissions_sql(App::$profile['profile_uid']);
if(feature_enabled(App::$profile['profile_uid'], 'channel_list_mode') && (! $mid))
$page_mode = 'list';
else
$page_mode = 'client';
$abook_uids = " and abook.abook_channel = " . intval(App::$profile['profile_uid']) . " ";
$simple_update = (($update) ? " AND item_unseen = 1 " : '');
if($search) {
$search = escape_tags($search);
if(strpos($search,'#') === 0) {
$sql_extra .= term_query('item',substr($search,1),TERM_HASHTAG,TERM_COMMUNITYTAG);
}
else {
$sql_extra .= sprintf(" AND (item.body like '%s' OR item.title like '%s') ",
dbesc(protect_sprintf('%' . $search . '%')),
dbesc(protect_sprintf('%' . $search . '%'))
);
}
}
head_add_link([
'rel' => 'alternate',
'type' => 'application/json+oembed',
'href' => z_root() . '/oep?f=&url=' . urlencode(z_root() . '/' . App::$query_string),
'title' => 'oembed'
]);
if($update && $_SESSION['loadtime'])
$simple_update = " AND (( item_unseen = 1 AND item.changed > '" . datetime_convert('UTC','UTC',$_SESSION['loadtime']) . "' ) OR item.changed > '" . datetime_convert('UTC','UTC',$_SESSION['loadtime']) . "' ) ";
if($load)
$simple_update = '';
if($static && $simple_update)
$simple_update .= " and author_xchan = '" . protect_sprintf(get_observer_hash()) . "' ";
if(($update) && (! $load)) {
if($mid) {
$r = q("SELECT parent AS item_id from item where mid like '%s' and uid = %d $item_normal_update
AND item_wall = 1 $simple_update $sql_extra limit 1",
dbesc($mid . '%'),
intval(App::$profile['profile_uid'])
);
$_SESSION['loadtime'] = datetime_convert();
}
else {
$r = q("SELECT parent AS item_id from item
left join abook on ( item.owner_xchan = abook.abook_xchan $abook_uids )
WHERE uid = %d $item_normal_update
AND item_wall = 1 $simple_update
AND (abook.abook_blocked = 0 or abook.abook_flags is null)
$sql_extra
ORDER BY created DESC",
intval(App::$profile['profile_uid'])
);
$_SESSION['loadtime'] = datetime_convert();
}
}
else {
if(x($category)) {
$sql_extra2 .= protect_sprintf(term_item_parent_query(App::$profile['profile_uid'],'item', $category, TERM_CATEGORY));
}
if(x($hashtags)) {
$sql_extra2 .= protect_sprintf(term_item_parent_query(App::$profile['profile_uid'],'item', $hashtags, TERM_HASHTAG, TERM_COMMUNITYTAG));
}
if($datequery) {
$sql_extra2 .= protect_sprintf(sprintf(" AND item.created <= '%s' ", dbesc(datetime_convert(date_default_timezone_get(),'',$datequery))));
$order = 'post';
}
if($datequery2) {
$sql_extra2 .= protect_sprintf(sprintf(" AND item.created >= '%s' ", dbesc(datetime_convert(date_default_timezone_get(),'',$datequery2))));
}
if($order === 'post')
$ordering = "created";
else
$ordering = "commented";
$itemspage = get_pconfig(local_channel(),'system','itemspage');
App::set_pager_itemspage(((intval($itemspage)) ? $itemspage : 20));
$pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval(App::$pager['itemspage']), intval(App::$pager['start']));
if($noscript_content || $load) {
if($mid) {
$r = q("SELECT parent AS item_id from item where mid like '%s' and uid = %d $item_normal
AND item_wall = 1 $sql_extra limit 1",
dbesc($mid . '%'),
intval(App::$profile['profile_uid'])
);
if (! $r) {
notice( t('Permission denied.') . EOL);
}
}
else {
$r = q("SELECT DISTINCT item.parent AS item_id, $ordering FROM item
left join abook on ( item.author_xchan = abook.abook_xchan $abook_uids )
WHERE true and item.uid = %d $item_normal
AND (abook.abook_blocked = 0 or abook.abook_flags is null)
AND item.item_wall = 1 AND item.item_thread_top = 1
$sql_extra $sql_extra2
ORDER BY $ordering DESC, item_id $pager_sql ",
intval(App::$profile['profile_uid'])
);
}
}
else {
$r = array();
}
}
if($r) {
$parents_str = ids_to_querystr($r,'item_id');
$r = q("SELECT item.*, item.id AS item_id
FROM item
WHERE item.uid = %d $item_normal
AND item.parent IN ( %s )
$sql_extra ",
intval(App::$profile['profile_uid']),
dbesc($parents_str)
);
xchan_query($r);
$items = fetch_post_tags($r, true);
$items = conv_sort($items,$ordering);
if($load && $mid && (! count($items))) {
// This will happen if we don't have sufficient permissions
// to view the parent item (or the item itself if it is toplevel)
notice( t('Permission denied.') . EOL);
}
} else {
$items = array();
}
if((! $update) && (! $load)) {
if($decoded)
$mid = 'b64.' . base64url_encode($mid);
// This is ugly, but we can't pass the profile_uid through the session to the ajax updater,
// because browser prefetching might change it on us. We have to deliver it with the page.
$maxheight = get_pconfig(App::$profile['profile_uid'],'system','channel_divmore_height');
if(! $maxheight)
$maxheight = 400;
$o .= '<div id="live-channel"></div>' . "\r\n";
$o .= "<script> var profile_uid = " . App::$profile['profile_uid']
. "; var netargs = '?f='; var profile_page = " . App::$pager['page']
. "; divmore_height = " . intval($maxheight) . "; </script>\r\n";
App::$page['htmlhead'] .= replace_macros(get_markup_template("build_query.tpl"),array(
'$baseurl' => z_root(),
'$pgtype' => 'channel',
'$uid' => ((App::$profile['profile_uid']) ? App::$profile['profile_uid'] : '0'),
'$gid' => '0',
'$cid' => '0',
'$cmin' => '(-1)',
'$cmax' => '(-1)',
'$star' => '0',
'$liked' => '0',
'$conv' => '0',
'$spam' => '0',
'$nouveau' => '0',
'$wall' => '1',
'$fh' => '0',
'$static' => $static,
'$page' => ((App::$pager['page'] != 1) ? App::$pager['page'] : 1),
'$search' => $search,
'$xchan' => '',
'$order' => (($order) ? urlencode($order) : ''),
'$list' => ((x($_REQUEST,'list')) ? intval($_REQUEST['list']) : 0),
'$file' => '',
'$cats' => (($category) ? urlencode($category) : ''),
'$tags' => (($hashtags) ? urlencode($hashtags) : ''),
'$mid' => (($mid) ? urlencode($mid) : ''),
'$verb' => '',
'$net' => '',
'$dend' => $datequery,
'$dbegin' => $datequery2
));
}
$update_unseen = '';
if($page_mode === 'list') {
/**
* in "list mode", only mark the parent item and any like activities as "seen".
* We won't distinguish between comment likes and post likes. The important thing
* is that the number of unseen comments will be accurate. The SQL to separate the
* comment likes could also get somewhat hairy.
*/
if($parents_str) {
$update_unseen = " AND ( id IN ( " . dbesc($parents_str) . " )";
$update_unseen .= " OR ( parent IN ( " . dbesc($parents_str) . " ) AND verb in ( '" . dbesc(ACTIVITY_LIKE) . "','" . dbesc(ACTIVITY_DISLIKE) . "' ))) ";
}
}
else {
if($parents_str) {
$update_unseen = " AND parent IN ( " . dbesc($parents_str) . " )";
}
}
if($is_owner && $update_unseen) {
$x = [ 'channel_id' => local_channel(), 'update' => 'unset' ];
call_hooks('update_unseen',$x);
if($x['update'] === 'unset' || intval($x['update'])) {
$r = q("UPDATE item SET item_unseen = 0 where item_unseen = 1 and item_wall = 1 AND uid = %d $update_unseen",
intval(local_channel())
);
}
}
$mode = (($search) ? 'search' : 'channel');
if($update) {
$o .= conversation($items,$mode,$update,$page_mode);
}
else {
$o .= '<noscript>';
if($noscript_content) {
$o .= conversation($items,$mode,$update,'traditional');
$o .= alt_pager(count($items));
}
else {
$o .= '<div class="section-content-warning-wrapper">' . t('You must enable javascript for your browser to be able to view this content.') . '</div>';
}
$o .= '</noscript>';
$o .= conversation($items,$mode,$update,$page_mode);
if ($mid && $items[0]['title'])
App::$page['title'] = $items[0]['title'] . " - " . App::$page['title'];
}
if($mid)
$o .= '<div id="content-complete"></div>';
return $o;
}
}