Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

mqtt: improve rule support for detection #11995

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open

mqtt: improve rule support for detection #11995

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
0951a58
mqtt: add reason code support for SUBACK
satta Oct 20, 2024
bdd20ff
mqtt: double-check detection directions
satta Oct 24, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 18 additions & 5 deletions rust/src/mqtt/detect.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -243,16 +243,29 @@ fn mqtt_tx_get_reason_code(tx: &MQTTTransaction) -> Option<u8> {
return None;
}

fn mqtt_tx_unsuback_has_reason_code(tx: &MQTTTransaction, code: &DetectUintData<u8>) -> c_int {
fn mqtt_tx_suback_unsuback_has_reason_code(
tx: &MQTTTransaction, code: &DetectUintData<u8>,
) -> c_int {
for msg in tx.msg.iter() {
if let MQTTOperation::UNSUBACK(ref unsuback) = msg.op {
if let Some(ref reason_codes) = unsuback.reason_codes {
for rc in reason_codes.iter() {
match msg.op {
MQTTOperation::UNSUBACK(ref unsuback) => {
if let Some(ref reason_codes) = unsuback.reason_codes {
for rc in reason_codes.iter() {
if detect_match_uint(code, *rc) {
return 1;
}
}
}
}
MQTTOperation::SUBACK(ref suback) => {
// in SUBACK these are stored as "QOS granted" historically
for rc in suback.qoss.iter() {
if detect_match_uint(code, *rc) {
return 1;
}
}
}
_ => {}
}
}
return 0;
Expand Down Expand Up @@ -476,7 +489,7 @@ unsafe extern "C" fn mqtt_reason_code_match(
return 1;
}
}
return mqtt_tx_unsuback_has_reason_code(tx, ctx);
return mqtt_tx_suback_unsuback_has_reason_code(tx, ctx);
}

unsafe extern "C" fn mqtt_reason_code_free(_de: *mut c_void, ctx: *mut c_void) {
Expand Down
Loading