/// Add SAS markers for the specified call ID and branch IDs on the message (either may be omitted).
void PJUtils::mark_sas_call_branch_ids(const SAS::TrailId trail, pjsip_cid_hdr* cid_hdr, pjsip_msg* msg)
{
// If we have a call ID, log it.
if (cid_hdr != NULL)
{
SAS::Marker cid_marker(trail, MARKER_ID_SIP_CALL_ID, 1u);
cid_marker.add_var_param(cid_hdr->id.slen, cid_hdr->id.ptr);
SAS::report_marker(cid_marker, SAS::Marker::Scope::Trace);
}
// If we have a message, look for branch IDs too.
if (msg != NULL)
{
// First find the top Via header. This was added by us.
pjsip_via_hdr* top_via = (pjsip_via_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_VIA, NULL);
// If we found the top header (and we really should have done), log its branch ID.
if (top_via != NULL)
{
{
SAS::Marker via_marker(trail, MARKER_ID_VIA_BRANCH_PARAM, 1u);
via_marker.add_var_param(top_via->branch_param.slen, top_via->branch_param.ptr);
SAS::report_marker(via_marker, SAS::Marker::Scope::Trace);
}
// Now see if we can find the next Via header and log it if so. This will have been added by
// the previous server. This means we'll be able to correlate with its trail.
pjsip_via_hdr* second_via = (pjsip_via_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_VIA, top_via);
if (second_via != NULL)
{
SAS::Marker via_marker(trail, MARKER_ID_VIA_BRANCH_PARAM, 2u);
via_marker.add_var_param(second_via->branch_param.slen, second_via->branch_param.ptr);
SAS::report_marker(via_marker, SAS::Marker::Scope::Trace);
}
}
}
}
void correlate_branch_from_av(Json::Value* av, SAS::TrailId trail)
{
Json::Value null_json;
Json::Value branch = av->get("branch", null_json);
if (branch.isNull())
{
LOG_WARNING("Could not raise branch correlation marker because the stored authentication vector is missing 'branch' field");
}
else if (!branch.isString())
{
LOG_WARNING("Could not raise branch correlation marker because the stored authentication vector has a non-string 'branch' field");
}
else if (branch.asString().empty())
{
LOG_WARNING("Could not raise branch correlation marker because the stored authentication vector has an empty 'branch' field");
}
else
{
SAS::Marker via_marker(trail, MARKER_ID_VIA_BRANCH_PARAM, 1u);
via_marker.add_var_param(branch.asString());
SAS::report_marker(via_marker, SAS::Marker::Scope::Trace);
}
}
