pespin has submitted this change. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/37313?usp=email )

Change subject: asterisk: IMS: Validate Accept header in MO INVITE ......................................................................

asterisk: IMS: Validate Accept header in MO INVITE

Related: SYS#6968 Change-Id: I7e419ae1cde384590b54c87c198cc411640c4594 --- M asterisk/IMS_ConnectionHandler.ttcn M library/SIP_Templates.ttcn 2 files changed, 42 insertions(+), 1 deletion(-)

Approvals: neels: Looks good to me, but someone else must approve Jenkins Builder: Verified pespin: Looks good to me, approved

diff --git a/asterisk/IMS_ConnectionHandler.ttcn b/asterisk/IMS_ConnectionHandler.ttcn index 881240b..af44647 100644 --- a/asterisk/IMS_ConnectionHandler.ttcn +++ b/asterisk/IMS_ConnectionHandler.ttcn @@ -1174,6 +1174,7 @@ via, calling_contact, g_pars.subscr.cp.sip_seq_nr, + accept := ts_Accept({ ts_AcceptBody("application/sdp"), ts_AcceptBody("application/3gpp-ims+xml") }), min_SE := min_SE, session_expires := session_expires, supported := supported, @@ -1400,6 +1401,7 @@ altstep as_IMS_mo_call_accept(boolean exp_update_to_direct_rtp := false, boolean fail_others := true) runs on IMS_ConnHdlr { + /* 3GPP TS 24.229 5.1.3.1 Initial INVITE request */ var template (present) PDU_SIP_Request exp_req := tr_SIP_INVITE(f_tr_SipUrl_opt_defport(ts_SipUrl_from_Addr_Union(g_pars.subscr.cp.called.addr)), ?, @@ -1407,6 +1409,7 @@ tr_To(tr_Addr_Union_from_val(g_pars.subscr.cp.called.addr), *), tr_Via_from(f_tr_HostPort(g_pars.subscr.remote_sip_host, g_pars.subscr.ipsec_remote_port_s)), ?, + accept := tr_Accept(superset(tr_AcceptBody("application/sdp"), tr_AcceptBody("application/3gpp-ims+xml"))), supported := tr_Supported(superset("timer")), body := ?); var charstring sip_expect_str := log2str(exp_req); diff --git a/library/SIP_Templates.ttcn b/library/SIP_Templates.ttcn index ffc4550..bfb3655 100644 --- a/library/SIP_Templates.ttcn +++ b/library/SIP_Templates.ttcn @@ -69,6 +69,26 @@ } }

+// [20.1, RFC2616 14.1] +template (present) AcceptBody tr_AcceptBody(template (present) charstring mediaRange, + template SemicolonParam_List acceptParam := *) := { + mediaRange := mediaRange, + acceptParam := acceptParam +} +template (value) AcceptBody ts_AcceptBody(template (value) charstring mediaRange, + template (omit) SemicolonParam_List acceptParam := omit) := { + mediaRange := mediaRange, + acceptParam := acceptParam +} +template (present) Accept tr_Accept(template AcceptBody_List acceptArgs := *) := { + fieldName := ACCEPT_E, + acceptArgs := acceptArgs +} +template (value) Accept ts_Accept(template (omit) AcceptBody_List acceptArgs := omit) := { + fieldName := ACCEPT_E, + acceptArgs := acceptArgs +} + // [20.5] template (present) Allow tr_Allow(template Method_List methods := *) := { fieldName := ALLOW_E, @@ -711,7 +731,8 @@ template (value) Via via, template (omit) ContentLength content_length := ts_ContentLength(0), template (omit) ContentType content_type := omit, - template (omit)Authorization authorization := omit, + template (omit) Accept accept := omit, + template (omit) Authorization authorization := omit, template (omit) Allow allow := ts_Allow(c_SIP_defaultMethods), template (omit) Expires expires := omit, template (omit) MinExpires minExpires := omit, @@ -728,6 +749,7 @@ template (omit) UserAgent userAgent := ts_UserAgent({ "osmo-ttcn3-hacks/0.23" }), template (omit) WwwAuthenticate wwwAuthenticate := omit ) modifies ts_SIP_msgHeader_empty := { + accept := accept, allow := allow, authorization := authorization, callId := { @@ -771,6 +793,7 @@ template integer seq_nr := ?, template ContentLength content_length := *, template ContentType content_type := *, + template Accept accept := *, template Allow allow := *, template Authorization authorization := *, template Expires expires := *, @@ -787,6 +810,7 @@ template UserAgent userAgent := *, template WwwAuthenticate wwwAuthenticate := * ) modifies t_SIP_msgHeader_any := { + accept := accept, allow := allow, authorization := authorization, callId := { @@ -880,6 +904,7 @@ template (value) Via via, template (value) Contact contact, integer seq_nr, + template (omit) Accept accept := omit, template (omit) Min_SE min_SE := omit, template (omit) Session_expires session_expires := omit, template (omit) Supported supported := omit, @@ -890,6 +915,7 @@ via, content_length := f_ContentLength(body), content_type := f_ContentTypeOrOmit(ts_CT_SDP, body), + accept := accept, min_SE := min_SE, session_expires := session_expires, supported := supported), @@ -903,6 +929,7 @@ template To to_addr, template Via via := tr_Via_from(f_tr_HostPort_opt_defport(?)), template integer seq_nr, + template Accept accept := *, template Min_SE min_SE := *, template Session_expires session_expires := *, template Supported supported := *, @@ -910,6 +937,7 @@ requestLine := tr_SIP_ReqLine(INVITE_E, uri), msgHeader := tr_SIP_msgh_std(call_id, from_addr, to_addr, ?, via, "INVITE", seq_nr, + accept := accept, min_SE := min_SE, session_expires := session_expires), messageBody := body,