From 5d022a07a635568f7964e24b326cebaf8d64b7da Mon Sep 17 00:00:00 2001
From: Tanu Kaskinen <tanuk@iki.fi>
Date: Sat, 11 Jul 2020 13:58:36 +0300
Subject: [PATCH] introspect: Add version check to
 pa_context_send_message_to_object()

If an application calls the function when the server doesn't support the
feature, the result should be just an error from the function. Without
the check the whole connection gets terminated due to protocol error.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/51>
---
 src/pulse/introspect.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pulse/introspect.c b/src/pulse/introspect.c
index 0671fa163..daae4cac4 100644
--- a/src/pulse/introspect.c
+++ b/src/pulse/introspect.c
@@ -2262,6 +2262,7 @@ pa_operation* pa_context_send_message_to_object(pa_context *c, const char *objec
 
     PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 35, PA_ERR_NOTSUPPORTED);
 
     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);