From 1c81e40b20e1aa1e81352a8268f42e245a829717 Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Mon, 30 Aug 2021 20:19:15 +0200
Subject: mod_external_services: Factor out public function for converting to
 XML

Along with the previous commit, allows building the XML thing yourself,
should you wish to send it yourself or use it in a different context than
an iq reply.

API change: The 'reply' is removed from the event.
---
 plugins/mod_external_services.lua | 49 +++++++++++++++++----------------------
 1 file changed, 21 insertions(+), 28 deletions(-)

(limited to 'plugins')

diff --git a/plugins/mod_external_services.lua b/plugins/mod_external_services.lua
index 3a92dc2d..6b46f890 100644
--- a/plugins/mod_external_services.lua
+++ b/plugins/mod_external_services.lua
@@ -131,6 +131,25 @@ function get_services()
 	return services;
 end
 
+function services_xml(services, name, namespace)
+	local reply = st.stanza(name or "services", { xmlns = namespace or "urn:xmpp:extdisco:2" });
+
+	for _, srv in ipairs(services) do
+		reply:tag("service", {
+				type = srv.type;
+				transport = srv.transport;
+				host = srv.host;
+				port = srv.port and string.format("%d", srv.port) or nil;
+				username = srv.username;
+				password = srv.password;
+				expires = srv.expires and dt.datetime(srv.expires) or nil;
+				restricted = srv.restricted and "1" or nil;
+			}):up();
+	end
+
+	return reply;
+end
+
 local function handle_services(event)
 	local origin, stanza = event.origin, event.stanza;
 	local action = stanza.tags[1];
@@ -142,7 +161,6 @@ local function handle_services(event)
 		return true;
 	end
 
-	local reply = st.reply(stanza):tag("services", { xmlns = action.attr.xmlns });
 	local services = get_services();
 
 	local requested_type = action.attr.type;
@@ -155,23 +173,11 @@ local function handle_services(event)
 	module:fire_event("external_service/services", {
 			origin = origin;
 			stanza = stanza;
-			reply = reply;
 			requested_type = requested_type;
 			services = services;
 		});
 
-	for _, srv in ipairs(services) do
-		reply:tag("service", {
-				type = srv.type;
-				transport = srv.transport;
-				host = srv.host;
-				port = srv.port and string.format("%d", srv.port) or nil;
-				username = srv.username;
-				password = srv.password;
-				expires = srv.expires and dt.datetime(srv.expires) or nil;
-				restricted = srv.restricted and "1" or nil;
-			}):up();
-	end
+	local reply = st.reply(stanza):add_child(services_xml(services, action.name, action.attr.xmlns));
 
 	origin.send(reply);
 	return true;
@@ -186,7 +192,6 @@ local function handle_credentials(event)
 		return true;
 	end
 
-	local reply = st.reply(stanza):tag("credentials", { xmlns = action.attr.xmlns });
 	local services = get_services();
 	services:filter(function (item)
 		return item.restricted;
@@ -206,7 +211,6 @@ local function handle_credentials(event)
 	module:fire_event("external_service/credentials", {
 			origin = origin;
 			stanza = stanza;
-			reply = reply;
 			requested_credentials = requested_credentials;
 			services = services;
 		});
@@ -217,18 +221,7 @@ local function handle_credentials(event)
 		return requested_credentials:contains(port_key) or requested_credentials:contains(portless_key);
 	end);
 
-	for _, srv in ipairs(services) do
-		reply:tag("service", {
-				type = srv.type;
-				transport = srv.transport;
-				host = srv.host;
-				port = srv.port and string.format("%d", srv.port) or nil;
-				username = srv.username;
-				password = srv.password;
-				expires = srv.expires and dt.datetime(srv.expires) or nil;
-				restricted = srv.restricted and "1" or nil;
-			}):up();
-	end
+	local reply = st.reply(stanza):add_child(services_xml(services, action.name, action.attr.xmlns));
 
 	origin.send(reply);
 	return true;
-- 
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