adlt/plugins/someip.rs
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// copyright Matthias Behr, (c) 2022
//
// todos:
// [ ] remove old partial segmented data... (e.g. by max time)
// [ ] modify timestamp of last segment of a segmented msg reflect the time from first msg
use crate::{
dlt::{DltChar4, DltMessage, DltMessageNwType, DltMessageType},
plugins::plugin::{Plugin, PluginState},
};
use afibex::fibex::{
get_all_fibex_in_dir, load_all_fibex, FibexData, FibexError, MethodIdType, Service,
};
use asomeip::utils::decode_someip_header_and_payload;
use serde_json::json;
use std::{
collections::HashMap,
error::Error,
fmt,
path::Path,
sync::{Arc, RwLock},
};
#[derive(Debug)]
struct SomeipPluginError {
msg: String,
}
impl SomeipPluginError {
fn new(msg: &str) -> Self {
SomeipPluginError {
msg: msg.to_string(),
}
}
}
impl fmt::Display for SomeipPluginError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", &self.msg)
}
}
impl Error for SomeipPluginError {}
#[derive(Debug)]
pub struct SomeipPlugin {
name: String,
enabled: bool,
state: Arc<RwLock<PluginState>>,
_fibex_dir: String,
mstp: DltMessageType,
ctid: Option<DltChar4>,
fibex_data: FibexData,
segmented_msgs_map: HashMap<u32, SegmentedMsgInfo>,
}
// segmented msgs support:
#[derive(Debug, PartialEq)]
enum SegmentedType {
None, // no someip msg detected, ignore
NotSegmented, // main type
Start, // segmented start
Chunk, // segmented chunks
End, // end of segmented chunks
}
#[derive(Debug)]
struct SegmentedMsgInfo {
expected_nr_chunks: u16,
chunk_size: u16,
inst_id: u32,
raw_buf: Vec<u8>,
}
impl Plugin for SomeipPlugin {
fn name(&self) -> &str {
&self.name
}
fn enabled(&self) -> bool {
self.enabled
}
fn state(&self) -> Arc<RwLock<PluginState>> {
self.state.clone()
}
fn process_msg(&mut self, msg: &mut DltMessage) -> bool {
if self.mstp == msg.mstp()
&& msg.noar() >= 2
&& (self.ctid.is_none()
|| (self.ctid.is_some()
&& matches!(msg.ctid(), Some(ctid) if ctid == &self.ctid.unwrap())))
{
let mut inst_id: u32 = 0;
let mut decoded_header = None;
let mut segmented_type: SegmentedType = SegmentedType::None;
let mut segment_id: u32 = 0;
let mut chunk_nr: u16 = u16::MAX;
let mut start_expected_nr_chunk: u16 = u16::MIN;
for (nr_arg, arg) in msg.into_iter().enumerate() {
// enumerate is faster than collecting in a vec. but a bit more unreadable from the code
match nr_arg {
0 => {
// ip_from, ip_to and instid
// is it a segmented msg? string: NWST, NWCH or NWEN?
if arg.is_string() && arg.scod() == 0 {
match arg.payload_raw {
b"NWST\0" => segmented_type = SegmentedType::Start,
b"NWCH\0" => segmented_type = SegmentedType::Chunk,
b"NWEN\0" => segmented_type = SegmentedType::End,
_ => {}
}
} else {
// todo verify type_info RAWD and endianess?
let buf = arg.payload_raw;
inst_id = match buf.len() {
9 => {
segmented_type = SegmentedType::NotSegmented;
u8::from_be_bytes([buf[8]]) as u32
}
10 => {
segmented_type = SegmentedType::NotSegmented;
u16::from_be_bytes([buf[8], buf[9]]) as u32
}
12 => {
segmented_type = SegmentedType::NotSegmented;
u32::from_be_bytes([buf[8], buf[9], buf[10], buf[11]])
}
_ => {
segmented_type = SegmentedType::None;
0
} // unknown..
}
}
if segmented_type == SegmentedType::None {
break; // unknown, dont process the other args
}
}
1 => {
// 2nd args
match segmented_type {
SegmentedType::NotSegmented => {
// someip msgs
decoded_header = Some(decode_someip_header_and_payload(
&self.fibex_data,
inst_id,
arg.payload_raw,
if arg.payload_raw.len() >= 16 {
&arg.payload_raw[16..]
} else {
&[]
},
));
break; // done with arg parsing, ignore any further
}
SegmentedType::Start | SegmentedType::Chunk | SegmentedType::End => {
// 2nd parameter: segment id
let buf = arg.payload_raw;
if buf.len() == 4 {
segment_id =
u32::from_le_bytes([buf[0], buf[1], buf[2], buf[3]]);
if segmented_type == SegmentedType::End {
if let Some(smi) =
self.segmented_msgs_map.remove(&segment_id)
{
// todo change timestamp to the one from the start... to keep better timing?
if smi.raw_buf.len()
> (smi.expected_nr_chunks as usize - 1)
* smi.chunk_size as usize
{
// all data available:
decoded_header =
Some(decode_someip_header_and_payload(
&self.fibex_data,
smi.inst_id,
&smi.raw_buf,
if smi.raw_buf.len() >= 16 {
&smi.raw_buf[16..]
} else {
&[]
},
));
} else {
decoded_header = Some(Err(FibexError {
msg: format!(
"SOME/IP segmented message NWEN {} with too little data: {} vs: >{}!",
segment_id, smi.raw_buf.len(), (smi.expected_nr_chunks as usize - 1)
* smi.chunk_size as usize
),
}));
}
}
break;
}
}
}
_ => break,
}
}
2 => {
match segmented_type {
SegmentedType::Start => {
// 3rd parameter: header raw
let buf = arg.payload_raw;
inst_id = match buf.len() {
9 => u8::from_be_bytes([buf[8]]) as u32,
10 => u16::from_be_bytes([buf[8], buf[9]]) as u32,
12 => u32::from_be_bytes([buf[8], buf[9], buf[10], buf[11]]),
_ => {
decoded_header = Some(Err(FibexError {
msg: format!(
"SOME/IP segmented message NWST id: {} with unknown 2nd arg len of {}!",
segment_id, buf.len()
),
}));
0
} // unknown..
}
}
SegmentedType::Chunk => {
// 3rd parameter: chunk nr
let buf = arg.payload_raw;
if buf.len() == 2 {
chunk_nr = u16::from_le_bytes([buf[0], buf[1]]);
} // else invalid? could remove/free msg already here, keep chunk_nr at max
}
_ => break,
}
}
3 => {
match segmented_type {
SegmentedType::Start => {
// unknown parameter? todo investigate
}
SegmentedType::Chunk => {
// 4th arg: raw payload, add to segment
if let Some(smi) = self.segmented_msgs_map.get_mut(&segment_id) {
let buf = arg.payload_raw;
// is this the next expected chunk?
// we expect chunks per segment to be in order!
// multiple segment transfer can occur simul.
let got_chunks = smi.raw_buf.len() / smi.chunk_size as usize; // checked for >0 at insert
if chunk_nr as usize == got_chunks
&& chunk_nr < smi.expected_nr_chunks
&& (buf.len() == smi.chunk_size as usize
|| (chunk_nr + 1) == smi.expected_nr_chunks)
// last chunk can have any size (should be smaller but not worth checking)
{
smi.raw_buf.extend(buf); // buf must not be mut
decoded_header = Some(Ok(format!(
"SOME/IP segmented message NWCH {} ({})",
segment_id, chunk_nr
)));
} else {
decoded_header = Some(Ok(format!(
"SOME/IP segmented message NWCH {} ({}) chunk out-of-sequence! (got chunks={} / exp {}) or wrong size!",
segment_id, chunk_nr, got_chunks, smi.expected_nr_chunks
)));
}
} else {
decoded_header = Some(Ok(format!(
"SOME/IP segmented message NWCH {} ({}) for unknown id!",
segment_id, chunk_nr
)));
}
break;
}
_ => break,
}
}
4 => {
// can only be start 5th parameter:
let buf = arg.payload_raw;
if buf.len() == 2 {
start_expected_nr_chunk = u16::from_le_bytes([buf[0], buf[1]]);
}
}
5 => {
// can only be start 6th parameter: chunk_size
let buf = arg.payload_raw;
if buf.len() == 2 {
let chunk_size = u16::from_le_bytes([buf[0], buf[1]]);
decoded_header = Some(Ok(format!(
"SOME/IP segmented message NWST id: {} amount: {}",
segment_id, start_expected_nr_chunk
)));
// some sanity check that chunk_size * size < e.g. 1MB
if chunk_size > 0
&& start_expected_nr_chunk > 0
&& start_expected_nr_chunk < 0xffff
&& (chunk_size as usize * start_expected_nr_chunk as usize)
< 1_000_000
{
let smi = SegmentedMsgInfo {
expected_nr_chunks: start_expected_nr_chunk,
chunk_size,
raw_buf: Vec::with_capacity(
chunk_size as usize * start_expected_nr_chunk as usize,
),
inst_id,
};
self.segmented_msgs_map.insert(segment_id, smi);
}
break;
} // todo: else print invalid msg...
}
_ => break,
}
}
if segmented_type != SegmentedType::None {
if let Some(Ok(text)) = decoded_header {
msg.set_payload_text(text);
} else {
msg.set_payload_text(format!(
"someip plugin! got decoding err={:?}",
decoded_header
));
}
} // for None do nothing
}
true
}
}
enum MethodTreeType<'a> {
Method(&'a afibex::fibex::Method),
Event(&'a afibex::fibex::Method),
Field {
field: &'a Arc<afibex::fibex::Parameter>,
getter: Option<u16>,
setter: Option<u16>,
notifier: Option<u16>,
},
}
/**
sort the methods into a tree-alike structure with
* methods first
* events
* fields (instead of 3 single items per getter,setter, notifier)
*/
fn sorted_mids_by_type(methods: &HashMap<u16, MethodIdType>) -> Vec<(u16, MethodTreeType)> {
let mut v = vec![];
for method in methods {
match method.1 {
MethodIdType::Method(m) => v.push((*method.0, MethodTreeType::Method(m))),
MethodIdType::Event(m) => v.push((*method.0, MethodTreeType::Event(m))),
MethodIdType::Setter { field }
| MethodIdType::Getter { field }
| MethodIdType::Notifier { field } => {
let is_setter = matches!(method.1, MethodIdType::Setter { field: _ });
let is_getter = matches!(method.1, MethodIdType::Getter { field: _ });
let is_notifier = matches!(method.1, MethodIdType::Notifier { field: _ });
// do we have this Parameter already?
let nfield = field;
let p = v.iter_mut().find(|(_m, p)| {
if let MethodTreeType::Field {
field,
getter: _,
setter: _,
notifier: _,
} = p
{
field.id == nfield.id
} else {
false
}
});
if let Some(p) = p {
if let MethodTreeType::Field {
field: _,
getter,
setter,
notifier,
} = &mut p.1
{
if is_getter {
*getter = Some(*method.0);
}
if is_setter {
*setter = Some(*method.0);
}
if is_notifier {
*notifier = Some(*method.0);
}
if *method.0 < p.0 {
// update mid in vec used for sorting
p.0 = *method.0;
}
}
} else {
v.push((
*method.0,
MethodTreeType::Field {
field,
getter: if is_getter { Some(*method.0) } else { None },
setter: if is_setter { Some(*method.0) } else { None },
notifier: if is_notifier { Some(*method.0) } else { None },
},
));
}
}
}
}
v.sort_unstable_by(|a, b| a.0.cmp(&b.0));
v
}
fn tree_item_for_mid_types(
mid: &u16,
method: &MethodTreeType,
service: &Service,
) -> serde_json::Value {
let no_name = "<no shortname>";
let no_desc = "<no desc>";
match method {
MethodTreeType::Method(m) => {
let method_name = m.short_name.as_deref().unwrap_or(no_name);
json!({ "label": format!("0x{:04x} Method: {}", mid, method_name),
"tooltip": format!("description:\n{}\ninput parameter:\n{}\nreturn parameter:\n{}",
m.desc.as_deref().unwrap_or(no_desc),
m.input_params.iter().map(|p|format!("{}:{}", p.short_name.as_deref().unwrap_or(no_name), p.datatype_ref)).collect::<Vec<_>>().join("\n"),
m.return_params.iter().map(|p|format!("{}:{}", p.short_name.as_deref().unwrap_or(no_name), p.datatype_ref)).collect::<Vec<_>>().join("\n")
),
"filterFrag": if let Some(service_name)=service.short_name.as_ref() {
serde_json::json!({
"ctid":"TC",
"payloadRegex":format!("^. \\(....:....\\) {}\\(....\\)\\.{}{{", service_name, method_name), // todo use ctid var and better filter for payload_raw!
})}else{
serde_json::Value::Null
},
})
}
MethodTreeType::Event(m) => {
let event_name = m.short_name.as_deref().unwrap_or(no_name);
json!({
"label": format!("0x{:04x} Event: {}", mid, event_name),
"tooltip": format!("description:\n{}\ninput parameter:\n{}",
m.desc.as_deref().unwrap_or(no_desc),
m.input_params.iter().map(|p|format!("{}:{}", p.short_name.as_deref().unwrap_or(no_name), p.datatype_ref)).collect::<Vec<_>>().join("\n")),
"filterFrag": if let Some(service_name)=service.short_name.as_ref() {
serde_json::json!({
"ctid":"TC",
"payloadRegex":format!("^\\* \\(....:....\\) {}\\(....\\)\\.{}{{", service_name, event_name), // todo use ctid var and better filter for payload_raw!
"reportOptions":{
"conversionFunction": JS_EVENT_CONVERSION_FUNCTION
}
})}else{
serde_json::Value::Null
},
})
}
MethodTreeType::Field {
field,
getter,
setter,
notifier,
} => {
let field_name = field.short_name.as_deref().unwrap_or(no_name);
json!({
"label":
format!(
"0x{:04x} Field: {} - {}{}{}",
mid,
field_name,
if let Some(g) = getter {
format!("Getter({:04x}) ", g)
} else {
"".to_owned()
},
if let Some(g) = setter {
format!("Setter({:04x}) ", g)
} else {
"".to_owned()
},
if let Some(g) = notifier {
format!("Notifier({:04x})", g)
} else {
"".to_owned()
},
),
"filterFrag": if let Some(short_name)=service.short_name.as_ref() {
serde_json::json!({
"ctid":"TC",
"payloadRegex":format!("^. \\(....:....\\) {}\\(....\\)\\.(?:changed|set|get)_{}_field", short_name, field_name), // todo use ctid var and better filter for payload_raw!
"reportOptions":{
"conversionFunction": JS_FIELD_CONVERSION_FUNCTION
}
})}else{
serde_json::Value::Null
},
})
}
}
}
// todo fix BigInt conversion "23n" -> BigInt("23n") ? (can report handle really big ints?)
// todo map someip events to events (EVENT_) and someip fields to STATE_ or values ...
// field = combination of getter/setter/notifier
/**
A very simple javascript function that is used as conversionFunction (see dlt-logs/report-generation)
to parse the json data from fields to a report.
It should be extended/replaced by a better mechanism where more type info from the fibex is used
(e.g. invalid values, *bitfields*, min/max,...)
*/
const JS_FIELD_CONVERSION_FUNCTION: &str = r##"
const r=/\.(?:changed|set|get)_.*?_field{"(.+?)":(.+)}\[OK\]$/;
const m=r.exec(params.msg.payloadString);
let o={};
if(m!==null){
const v=JSON5.parse(m[2]);
const fn=(p,v,o)=> {
switch(typeof v){
case 'number': o[p]=v;break;
case 'string': o[`STATE_${p}`]=v;break;
case 'object': Object.keys(v).forEach(vc=>{fn(`${p}.${vc}`, v[vc],o);}); break;
}
};
fn(m[1],v,o);
}
return o;
"##;
// map events
// events w.o. parameter get mapped to EVENT_<name> to use scatter and no charts/lines
// events with parameter are treated like regular fields
// it can be:
// * (0000:0000) VehicleInformation(0001).RelativeTime1{}[OK]
// * (0000:0000) VehicleInformation(0001).RelativeTime2{"timeSecondCounterRelative":94198733}[OK]
// * (0000:0000) VehicleInformation(0001).RelativeTime3{"timeSecondCounterRelative":94198733,"timeDayCounterAbsolute":8284}[OK]
const JS_EVENT_CONVERSION_FUNCTION: &str = r##"
const r=/\)\.(.+)(?={)(.*)\[OK\]$/;
const m=r.exec(params.msg.payloadString);
let o={};
if(m!==null){
const evName=m[1];
if (m[2].length>2){
const v=JSON5.parse(m[2]);
const fn=(p,v,o)=> {
switch(typeof v){
case 'number': o[p]=v;break;
case 'string': o[`STATE_${p}`]=v;break;
case 'object': Object.keys(v).forEach(vc=>{fn(`${p}.${vc}`, v[vc],o);}); break;
}
};
fn(`${evName}`,v,o);
}else{
o[`EVENT_${evName}`]=1.0; // map to 1.0
}
}
return o;
"##;
fn tree_item_for_service(
((sid, major), service): &(&(u16, u8), &Vec<Service>),
) -> serde_json::Value {
serde_json::json!({
"label":format!("{} v{}.{}, service id: {:5} (0x{:04x})", service[0].short_name.as_ref().unwrap_or(&"".to_string()), major, service[0].api_version.1, sid, sid),
"tooltip":service[0].desc,
"filterFrag": if let Some(short_name)=service[0].short_name.as_ref() {
serde_json::json!({
"ctid":"TC",
"payloadRegex":format!("^. \\(....:....\\) {}\\(....\\)", short_name), // todo use ctid var and better filter for payload_raw!
"reportOptions":{ // todo add only (set to null) if fields (others than methods are available)
"conversionFunction": JS_FIELD_CONVERSION_FUNCTION
}
})
}else{
serde_json::Value::Null
},
"children": sorted_mids_by_type (&service[0].methods_by_mid).iter().map(|(mid, method)|{tree_item_for_mid_types(mid, method, &service[0])}).collect::<Vec<serde_json::Value>>(),
})
}
impl SomeipPlugin {
pub fn from_json(
config: &serde_json::Map<String, serde_json::Value>,
) -> Result<SomeipPlugin, Box<dyn Error>> {
let name = match &config["name"] {
serde_json::Value::String(s) => Some(s.clone()),
_ => None,
}; // todo check name for SomeIp
if name.is_none() {
return Err(SomeipPluginError::new("SomeipPlugin: name missing").into());
}
// todo parse ctid and mtin
let enabled = match &config.get("enabled") {
Some(serde_json::Value::Bool(b)) => *b,
None => true, // default to true
_ => {
return Err(
SomeipPluginError::new("SomeipPlugin: config 'enabled' not an bool").into(),
)
}
};
let fibex_dir = if let Some(serde_json::Value::String(s)) = &config.get("fibexDir") {
s.clone()
} else {
return Err(
SomeipPluginError::new("SomeipPlugin: fibexDir missing or invalid type").into(),
);
};
let mut state: PluginState = Default::default();
let warnings: Vec<String> = Vec::new();
let ctid = Some(DltChar4::from_buf(b"TC\0\0"));
let files = get_all_fibex_in_dir(Path::new(&fibex_dir), false)?; // todo or recursive
let fibex_data = load_all_fibex(&files)?;
// update state:
let mut services_by_name = fibex_data
.elements
.services_map_by_sid_major
.iter()
.collect::<Vec<_>>();
services_by_name.sort_unstable_by(|a, b| a.1[0].short_name.cmp(&b.1[0].short_name));
let mut services_by_id = services_by_name.clone();
services_by_id.sort_unstable_by(|a, b| a.0 .0.cmp(&b.0 .0));
state.value = json!({"name":name, "treeItems":[
if !warnings.is_empty() {
json!({
"label": format!("Warnings #{}", warnings.len()),
"iconPath":"warning",
"children": warnings.iter().map(|w|{json!({"label":w})}).collect::<Vec<serde_json::Value>>()
})
} else {
json!(null)
},
{"label":format!("Services #{}, sorted by name", fibex_data.elements.services_map_by_sid_major.len()),
"children":services_by_name.iter().map(tree_item_for_service).collect::<Vec<serde_json::Value>>(),
},
{"label":format!("Services #{}, sorted by service id", fibex_data.elements.services_map_by_sid_major.len()),
"children":services_by_id.iter().map(tree_item_for_service).collect::<Vec<serde_json::Value>>(),
},
{"label":format!("Datatypes #{}", fibex_data.elements.datatypes_map_by_id.len())},
{"label":format!("Codings #{}", fibex_data.pi.codings.len())},
]});
state.generation += 1;
Ok(SomeipPlugin {
name: name.unwrap(),
enabled,
state: Arc::new(RwLock::new(state)),
_fibex_dir: fibex_dir,
mstp: DltMessageType::NwTrace(DltMessageNwType::Ipc),
ctid,
fibex_data,
segmented_msgs_map: HashMap::with_capacity(16),
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use serde_json::json;
#[test]
fn init_plugin() {
let mut test_dir = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"));
test_dir.push("tests");
// good case:
let cfg = json!({"name":"foo","enabled": true, "fibexDir":test_dir});
let p = SomeipPlugin::from_json(cfg.as_object().unwrap());
assert!(p.is_ok());
let p = p.unwrap();
assert_eq!(p.name, "foo");
assert!(p.enabled);
assert_eq!(p.ctid, Some(DltChar4::from_buf(b"TC\0\0")));
let state = p.state();
let state = state.read().unwrap();
assert_eq!(state.generation, 1); // first update done
let state_value = &state.value;
assert!(state_value.is_object());
let state_obj = state_value.as_object().unwrap();
assert!(state_obj.contains_key("name"));
assert!(state_obj.contains_key("treeItems"));
}
}