implement basic feed output for register.php

diff --git a/register.php b/register.php
index 144189f74b0e2dfd74a9a6d79829177c8b3eb9d5..3198095a59b795b5deea550d5e3fc99c9be27490 100644 (file)
--- a/register.php
+++ b/register.php
@@ -16,6 +16,42 @@
 
        init_connection($link);
 
+       if ($_REQUEST["format"] == "feed") {
+               header("Content-Type: text/xml");
+
+               print '<?xml version="1.0" encoding="utf-8"?>';
+               print "<feed xmlns=\"http://www.w3.org/2005/Atom\">
+                       <id>".htmlspecialchars(SELF_URL_PATH . "/register.php")."</id>
+                       <title>Tiny Tiny RSS registration slots</title>
+                       <link rel=\"self\" href=\"".htmlspecialchars(SELF_URL_PATH . "/register.php?format=feed")."\"/>
+                       <link rel=\"alternate\" href=\"".htmlspecialchars(SELF_URL_PATH)."\"/>";
+
+               if (ENABLE_REGISTRATION) {
+                       $result = db_query($link, "SELECT COUNT(*) AS cu FROM ttrss_users");
+                       $num_users = db_fetch_result($result, 0, "cu");
+
+                       $num_users -= REG_MAX_USERS;
+                       if ($num_users < 0) $num_users = 0;
+                       $reg_suffix = "enabled";
+               } else {
+                       $num_users = 0;
+                       $reg_suffix = "disabled";
+               }
+
+               print "<entry>
+                       <id>".htmlspecialchars(SELF_URL_PATH)."/register.php?$num_users"."</id>
+                       <link rel=\"alternate\" href=\"".htmlspecialchars(SELF_URL_PATH . "/register.php")."\"/>";
+
+               print "<title>$num_users slots are currently available, registration $reg_suffix</title>";
+               print "<summary>$num_users slots are currently available, registration $reg_suffix</summary>";
+
+               print "</entry>";
+
+               print "</feed>";
+
+               return;
+       }
+
        /* Remove users which didn't login after receiving their registration information */
 
        if (DB_TYPE == "pgsql") {