From 61be2e29d620006ee141ad88165de1819593ff35 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Tue, 16 Aug 2022 10:26:38 +0200
Subject: Implement dummy receiving of XMPP chat messages

---
 gtk.c   |  5 +++++
 gui.h   |  1 +
 limox.c | 26 ++++++++++++++++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/gtk.c b/gtk.c
index 3139cbb..fd8ab8a 100644
--- a/gtk.c
+++ b/gtk.c
@@ -263,3 +263,8 @@ void gui_run(void) {
 	g_object_unref(app);
 
 }
+
+void gui_add_message(const char* sender_jid, const char* content) {
+
+	printf("Received from %s:\n%s\n", sender_jid, content);
+}
diff --git a/gui.h b/gui.h
index 057e0b1..268cb19 100644
--- a/gui.h
+++ b/gui.h
@@ -6,3 +6,4 @@ void gui_connected(char* jid, char* password);
 void gui_disconnected(void);
 void gui_suspended(void);
 void gui_resumed(void);
+void gui_add_message(const char* sender_jid, const char* content);
diff --git a/limox.c b/limox.c
index 911568b..b254336 100644
--- a/limox.c
+++ b/limox.c
@@ -9,6 +9,7 @@
 
 #include <strophe.h>
 
+#include <gui.h>
 #include <limox.h>
 
 
@@ -34,6 +35,27 @@ static long flags;
 // this variable stays initialized while the connection is suspended
 static xmpp_sm_state_t* sm_state;
 
+
+static int message_handler(xmpp_conn_t *conn, xmpp_stanza_t *stanza,
+                           void *userdata) {
+
+	// local variables
+	xmpp_stanza_t* body;
+	const char* content;
+
+	body = xmpp_stanza_get_child_by_name(stanza, "body");
+	if (body == NULL) {
+		printf("DEBUG: Got message stanza of type char without body!\n");
+		return 1;
+	}
+
+	content = xmpp_stanza_get_text(body);
+
+	gui_add_message(xmpp_stanza_get_from(stanza), content);
+
+	return 1;
+}
+
 static void conn_handler(xmpp_conn_t *conn, xmpp_conn_event_t status,int error,
                          xmpp_stream_error_t *stream_error, void *userdata) {
 
@@ -42,6 +64,10 @@ static void conn_handler(xmpp_conn_t *conn, xmpp_conn_event_t status,int error,
 		case XMPP_CONN_CONNECT:
 			printf("DEBUG: Got XMPP_CONN_CONNECT\n");
 
+			// add handler for <message> stanzas
+			xmpp_handler_add(conn, message_handler, NULL, "message", "chat",
+			                 NULL);
+
 			// send initial presence
 			xmpp_stanza_t* presence;
 			presence = xmpp_presence_new(ctx);
-- 
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