friendica/mod/_well_known.php

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<?php
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require_once("mod/hostxrd.php");
function _well_known_init(&$a){
if ($a->argc > 1) {
switch($a->argv[1]) {
case "host-meta":
hostxrd_init($a);
break;
case "x-social-relay":
wk_social_relay($a);
break;
}
}
http_status_exit(404);
killme();
}
function wk_social_relay(&$a) {
define('SR_SCOPE_ALL', 'all');
define('SR_SCOPE_TAGS', 'tags');
$subscribe = (bool)true;
$scope = SR_SCOPE_ALL;
//$scope = SR_SCOPE_TAGS;
$tags = array();
if ($scope == SR_SCOPE_TAGS) {
$terms = q("SELECT DISTINCT(`term`) FROM `search`");
foreach($terms AS $term) {
$tag = trim($term["term"], "#");
$tags[] = $tag;
}
}
$relay = array("subscribe" => $subscribe,
"scope" => $scope,
"tags" => array_unique($tags));
header('Content-type: application/json; charset=utf-8');
echo json_encode($relay, true);
exit;
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}