fail on invalid RTP address from MGW
When the CRCX OK returns an invalid RTP address, abort the call; fixes
MSC_Tests.TC_invalid_mgcp_crash.
The original crash happened when adding this error handling without this commit
I08c03946605aa12e0a5ce8b3c773704ef5327a7a ("fsm: use deferred deallocation" for
osmo-mgw I7df2e9202b04e7ca7366bb0a8ec53cf3bb14faf3 "fix use-after-free: require
new fsm deferred dealloc, check for term"). With this error handling added,
even though avoiding a crash, the test does not pass yet, because instead of
rejecting the call, it currently composes an Assignment Command without a
Transport Layer Address. Fix that.
Change-Id: I00c3b5ff74c05bcc2b7c39375c33419916a57193
diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index 0b07fbc..a4048f4 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -627,6 +627,12 @@
LOG_MSC_A(msc_a, LOGL_ERROR, "Invalid data for %s\n", osmo_fsm_event_name(fi->fsm, event));
return;
}
+ if (!osmo_sockaddr_str_is_nonzero(&rtps->local)) {
+ LOG_MSC_A(msc_a, LOGL_ERROR, "Invalid RTP address received from MGW: " OSMO_SOCKADDR_STR_FMT "\n",
+ OSMO_SOCKADDR_STR_FMT_ARGS(&rtps->local));
+ call_leg_release(msc_a->cc.call_leg);
+ return;
+ }
LOG_MSC_A(msc_a, LOGL_DEBUG,
"MGW endpoint's RTP address available for the CI %s: " OSMO_SOCKADDR_STR_FMT " (osmux=%s:%d)\n",
rtp_direction_name(rtps->dir), OSMO_SOCKADDR_STR_FMT_ARGS(&rtps->local),