static void ortp_zrtp_configure(ZrtpContext *context){
zrtp_InitializeConfig(context);
zrtp_setMandatoryOnly(context);
zrtp_setTrustedMitM(context,FALSE);//because it is uninitialized in zrtpcpp.
zrtp_setSasSignature(context,FALSE);//because it is uninitialized in zrtpcpp.
}
/* Initialize the ZRTP transport and the user callbacks */
pjmedia_transport* on_zrtp_transport_created(pjsua_call_id call_id,
unsigned media_idx,
pjmedia_transport *base_tp,
unsigned flags) {
pjsua_call *call;
pjmedia_transport *zrtp_tp = NULL;
pj_status_t status;
pjmedia_endpt* endpt = pjsua_get_pjmedia_endpt();
// For now, do zrtp only on audio stream
call = &pjsua_var.calls[call_id];
if (media_idx < call->med_prov_cnt) {
pjsua_call_media *call_med = &call->media_prov[media_idx];
if (call_med->tp && call_med->type != PJMEDIA_TYPE_AUDIO) {
PJ_LOG(2, (THIS_FILE, "ZRTP transport not yet supported for : %d", call_med->type));
return base_tp;
}
}
// Create zrtp transport adapter
status = pjmedia_transport_zrtp_create(endpt, NULL, base_tp,
&zrtp_tp, (flags & PJSUA_MED_TP_CLOSE_MEMBER));
if(status == PJ_SUCCESS){
PJ_LOG(4,(THIS_FILE, "ZRTP transport created"));
// TODO : we should use our own pool
// Build callback data ponter
zrtp_cb_user_data* zrtp_cb_data = PJ_POOL_ZALLOC_T(css_var.pool, zrtp_cb_user_data);
zrtp_cb_data->zrtp_tp = zrtp_tp;
zrtp_cb_data->call_id = call_id;
zrtp_cb_data->cipher = pj_str("");
zrtp_cb_data->sas = pj_str("");
zrtp_cb_data->sas_verified = PJ_FALSE;
// Build callback struct
zrtp_UserCallbacks* zrtp_cbs = PJ_POOL_ZALLOC_T(css_var.pool, zrtp_UserCallbacks);
zrtp_cbs->zrtp_secureOn = &zrtpSecureOn;
zrtp_cbs->zrtp_secureOff = &zrtpSecureOff;
zrtp_cbs->zrtp_showSAS = &zrtpShowSas;
zrtp_cbs->zrtp_confirmGoClear = &confirmGoClear;
zrtp_cbs->zrtp_showMessage = &showMessage;
zrtp_cbs->zrtp_zrtpNegotiationFailed = &zrtpNegotiationFailed;
zrtp_cbs->zrtp_zrtpNotSuppOther = &zrtpNotSuppOther;
zrtp_cbs->zrtp_zrtpAskEnrollment = &zrtpAskEnrollment;
zrtp_cbs->zrtp_zrtpInformEnrollment = &zrtpInformEnrollment;
zrtp_cbs->zrtp_signSAS = &signSAS;
zrtp_cbs->zrtp_checkSASSignature = &checkSASSignature;
zrtp_cbs->userData = zrtp_cb_data;
pjmedia_transport_zrtp_setUserCallback(zrtp_tp, zrtp_cbs);
/*
* Initialize the transport. Just the filename of the ZID file that holds
* our partners ZID, shared data etc. If the files does not exists it will
* be created an initialized. The ZRTP configuration is not yet implemented
* thus the parameter is NULL.
*/
pjmedia_transport_zrtp_initialize(zrtp_tp, css_var.zid_file, PJ_TRUE);
#if 0
// This is a crappy hack for buggy versions of sip servers that does not correctly manage hello
ZrtpContext* zrtpContext = pjmedia_transport_zrtp_getZrtpContext(zrtp_tp);
zrtp_setMandatoryOnly(zrtpContext);
#endif
return zrtp_tp;
} else {
PJ_LOG(1, (THIS_FILE, "ZRTP transport problem : %d", status));
return base_tp;
}
}