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dexter gerrit-no-reply at lists.osmocom.orgReview at https://gerrit.osmocom.org/6258 protocol: check requested connection mode The connection mode setting (e.g. recvonly) is not checked on CRCX and MDCX. This allows requests that set the connection mode to sendrecv or sendonly without ever configuring the remote end of the connection (half-open connection). - reject sendrecv or sendonly on half open connections See also TTCN3 Test: MGCP_Test.TC_crcx_early_bidir_mode Change-Id: I6ab01855d3b1faa36aebac357e7b97c563990678 Related: OS#2652 --- M src/libosmo-mgcp/mgcp_protocol.c 1 file changed, 22 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-mgw refs/changes/58/6258/1 diff --git a/src/libosmo-mgcp/mgcp_protocol.c b/src/libosmo-mgcp/mgcp_protocol.c index 2977fdf..05aefc1 100644 --- a/src/libosmo-mgcp/mgcp_protocol.c +++ b/src/libosmo-mgcp/mgcp_protocol.c @@ -654,6 +654,17 @@ mgcp_rtp_end_config(endp, 0, &conn->end); + /* check connection mode setting */ + if (conn->conn->mode != MGCP_CONN_LOOPBACK + && conn->conn->mode != MGCP_CONN_RECV_ONLY + && conn->end.rtp_port == 0) { + LOGP(DLMGCP, LOGL_ERROR, + "CRCX: endpoint:%x selected connection mode type requires an opposite end!\n", + ENDPOINT_NUMBER(endp)); + error_code = 527; + goto error2; + } + if (allocate_port(endp, conn) != 0) { goto error2; } @@ -812,6 +823,17 @@ mgcp_set_audio_info(p->cfg, &conn->end.codec, PTYPE_UNDEFINED, endp->local_options.codec); + /* check connection mode setting */ + if (conn->conn->mode != MGCP_CONN_LOOPBACK + && conn->conn->mode != MGCP_CONN_RECV_ONLY + && conn->end.rtp_port == 0) { + LOGP(DLMGCP, LOGL_ERROR, + "MDCX: endpoint:%x selected connection mode type requires an opposite end!\n", + ENDPOINT_NUMBER(endp)); + error_code = 527; + goto error3; + } + if (setup_rtp_processing(endp, conn) != 0) goto error3; -- To view, visit https://gerrit.osmocom.org/6258 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I6ab01855d3b1faa36aebac357e7b97c563990678 Gerrit-PatchSet: 1 Gerrit-Project: osmo-mgw Gerrit-Branch: master Gerrit-Owner: dexter <pmaier at sysmocom.de>