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introspect: Add version check to pa_context_send_message_to_object()

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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>
This commit is contained in:
Tanu Kaskinen 2020-07-11 13:58:36 +03:00
parent 6722b2d8c4
commit 5d022a07a6
1 changed files with 1 additions and 0 deletions
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src/pulse/introspect.c
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@ -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);