From 8974c147e03df876a7225af4412f4f79e4582b9c Mon Sep 17 00:00:00 2001
From: Michael Vogel <icarus@dabo.de>
Date: Sun, 9 Aug 2015 08:31:42 +0200
Subject: [PATCH] First steps for a public relay for posts.

---
 mod/_well_known.php | 50 +++++++++++++++++++++++++++++++++++++--------
 1 file changed, 41 insertions(+), 9 deletions(-)

diff --git a/mod/_well_known.php b/mod/_well_known.php
index 6792d36fe..5c8a3380f 100644
--- a/mod/_well_known.php
+++ b/mod/_well_known.php
@@ -2,13 +2,45 @@
 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;
-        }
-    }
-    http_status_exit(404);
-    killme();
+	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;
 }