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feat: Add LICENSE file and refactor MITM response handling and tracing.

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This commit is contained in:
Nikketryhard
2026-02-18 02:43:05 -06:00
parent c0c12de83c
commit ad0aa1556c
26 changed files with 1132 additions and 569 deletions
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2
Cargo.lock generated
View File

@@ -2361,7 +2361,7 @@ dependencies = [
[[package]]
name = "zerogravity"
version = "3.0.0"
version = "1.0.0"
dependencies = [
"async-stream",
"axum",

21
LICENSE Normal file
View File

@@ -0,0 +1,21 @@
MIT License
Copyright (c) 2026 NikkeTryHard
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

4
README.md
View File

@@ -1,7 +1,7 @@
<p align="center">
<img src="https://img.shields.io/badge/rust-1.75+-555?style=flat-square&logo=rust&logoColor=white" alt="Rust" />
<img src="https://img.shields.io/badge/platform-linux%20%7C%20macos%20%7C%20windows-555?style=flat-square" alt="Platform" />
<img src="https://img.shields.io/badge/license-private-333?style=flat-square" alt="License" />
<img src="https://img.shields.io/badge/license-MIT-333?style=flat-square" alt="License" />
<img src="https://img.shields.io/badge/API-OpenAI%20%7C%20Gemini-666?style=flat-square" alt="API" />
<img src="https://img.shields.io/badge/TLS-BoringSSL-444?style=flat-square" alt="TLS" />
<img src="https://img.shields.io/badge/proxy-MITM-555?style=flat-square" alt="MITM" />
@@ -172,4 +172,4 @@ The proxy needs an OAuth token:
## License
Private. Do not distribute.
[MIT](LICENSE)

149
src/api/completions.rs
View File

@@ -18,10 +18,6 @@ use super::util::{err_response, now_unix, upstream_err_response};
use super::AppState;
use crate::mitm::store::{CapturedFunctionCall, PendingToolResult, ToolRound};
/// System fingerprint for completions responses (derived from crate version at compile time).
fn system_fingerprint() -> String {
format!("fp_{}", env!("CARGO_PKG_VERSION").replace('.', ""))
@@ -181,8 +177,6 @@ pub(crate) async fn handle_completions(
model_name, body.stream
);
let model = match lookup_model(model_name) {
Some(m) => m,
None => {
@@ -200,22 +194,28 @@ pub(crate) async fn handle_completions(
// Convert OpenAI tools to Gemini format
let tools = body.tools.as_ref().and_then(|t| {
let gemini_tools = crate::mitm::modify::openai_tools_to_gemini(t);
if gemini_tools.is_empty() { None } else {
info!(count = t.len(), "Completions: client tools for MITM injection");
if gemini_tools.is_empty() {
None
} else {
info!(
count = t.len(),
"Completions: client tools for MITM injection"
);
Some(gemini_tools)
}
});
let tool_config = body.tools.as_ref().and_then(|_| {
body.tool_choice.as_ref().map(|choice| {
crate::mitm::modify::openai_tool_choice_to_gemini(choice)
})
body.tool_choice
.as_ref()
.map(crate::mitm::modify::openai_tool_choice_to_gemini)
});
// ── Extract tool results from messages for MITM injection ──────────
// Build ToolRounds from message history: each round pairs assistant tool_calls
// with subsequent tool result messages. Local call_id_to_name mapping.
let mut tool_rounds: Vec<ToolRound> = Vec::new();
let mut call_id_to_name: std::collections::HashMap<String, String> = std::collections::HashMap::new();
let mut call_id_to_name: std::collections::HashMap<String, String> =
std::collections::HashMap::new();
{
let mut current_round: Option<ToolRound> = None;
@@ -266,10 +266,8 @@ pub(crate) async fn handle_completions(
"tool" => {
let text = extract_message_text(&msg.content);
if let Some(ref call_id) = msg.tool_call_id {
let result_index = current_round
.as_ref()
.map(|r| r.results.len())
.unwrap_or(0);
let result_index =
current_round.as_ref().map(|r| r.results.len()).unwrap_or(0);
let name = call_id_to_name
.get(call_id.as_str())
.cloned()
@@ -336,8 +334,7 @@ pub(crate) async fn handle_completions(
if merged > 0 {
info!(
merged_count = merged,
"Completions: merged {} thought_signature(s) from MITM capture",
merged,
"Completions: merged {} thought_signature(s) from MITM capture", merged,
);
}
}
@@ -431,7 +428,8 @@ pub(crate) async fn handle_completions(
});
// Get last calls from the latest tool round (if any) for proxy recording compat
let last_function_calls = tool_rounds.last()
let last_function_calls = tool_rounds
.last()
.map(|r| r.calls.clone())
.unwrap_or_default();
@@ -440,12 +438,18 @@ pub(crate) async fn handle_completions(
let (mitm_rx, event_tx) = (Some(rx), tx);
// Build pending tool results from latest round
let pending_tool_results = tool_rounds.last()
let pending_tool_results = tool_rounds
.last()
.map(|r| r.results.clone())
.unwrap_or_default();
// Start debug trace
let trace = state.trace.start(&cascade_id, "POST /v1/chat/completions", model_name, body.stream);
let trace = state.trace.start(
&cascade_id,
"POST /v1/chat/completions",
model_name,
body.stream,
);
if let Some(ref t) = trace {
t.set_client_request(crate::trace::ClientRequestSummary {
message_count: body.messages.len(),
@@ -455,35 +459,44 @@ pub(crate) async fn handle_completions(
user_text_preview: user_text.chars().take(200).collect(),
system_prompt: body.messages.iter().any(|m| m.role == "system"),
has_image: image.is_some(),
}).await;
})
.await;
// Start turn 0
t.start_turn().await;
}
let mitm_gate = std::sync::Arc::new(tokio::sync::Notify::new());
let mitm_gate_clone = mitm_gate.clone();
state.mitm_store.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: user_text.clone(),
event_channel: event_tx,
generation_params,
pending_image,
tools,
tool_config,
pending_tool_results,
tool_rounds,
last_function_calls,
call_id_to_name,
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
}).await;
state
.mitm_store
.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: user_text.clone(),
event_channel: event_tx,
generation_params,
pending_image,
tools,
tool_config,
pending_tool_results,
tool_rounds,
last_function_calls,
call_id_to_name,
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
})
.await;
// Send REAL user text to LS
match state
.backend
.send_message_with_image(&cascade_id, &format!(".<cid:{}>", cascade_id), model.model_enum, image.as_ref())
.send_message_with_image(
&cascade_id,
&format!(".<cid:{}>", cascade_id),
model.model_enum,
image.as_ref(),
)
.await
{
Ok((200, _)) => {
@@ -495,7 +508,10 @@ pub(crate) async fn handle_completions(
}
Ok((status, _)) => {
state.mitm_store.remove_request(&cascade_id).await;
if let Some(ref t) = trace { t.record_error(format!("Backend returned {status}")).await; t.finish("backend_error").await; }
if let Some(ref t) = trace {
t.record_error(format!("Backend returned {status}")).await;
t.finish("backend_error").await;
}
return err_response(
StatusCode::BAD_GATEWAY,
format!("Backend returned {status}"),
@@ -504,7 +520,10 @@ pub(crate) async fn handle_completions(
}
Err(e) => {
state.mitm_store.remove_request(&cascade_id).await;
if let Some(ref t) = trace { t.record_error(format!("Send failed: {e}")).await; t.finish("send_error").await; }
if let Some(ref t) = trace {
t.record_error(format!("Send failed: {e}")).await;
t.finish("send_error").await;
}
return err_response(
StatusCode::BAD_GATEWAY,
format!("Send failed: {e}"),
@@ -515,10 +534,8 @@ pub(crate) async fn handle_completions(
// Wait for MITM gate: 5s → 502 if MITM enabled
let gate_start = std::time::Instant::now();
let gate_matched = tokio::time::timeout(
std::time::Duration::from_secs(5),
mitm_gate.notified(),
).await;
let gate_matched =
tokio::time::timeout(std::time::Duration::from_secs(5), mitm_gate.notified()).await;
let gate_wait_ms = gate_start.elapsed().as_millis() as u64;
if gate_matched.is_err() {
if state.mitm_enabled {
@@ -549,7 +566,7 @@ pub(crate) async fn handle_completions(
let include_usage = body
.stream_options
.as_ref()
.map_or(false, |o| o.include_usage);
.is_some_and(|o| o.include_usage);
if body.stream {
chat_completions_stream(
@@ -582,7 +599,12 @@ pub(crate) async fn handle_completions(
// Send the same message on each extra cascade
match state
.backend
.send_message_with_image(&cid, &format!(".<cid:{}>", cid), model.model_enum, image.as_ref())
.send_message_with_image(
&cid,
&format!(".<cid:{}>", cid),
model.model_enum,
image.as_ref(),
)
.await
{
Ok((200, _)) => {
@@ -783,7 +805,7 @@ async fn chat_completions_stream(
for (i, fc) in calls.iter().enumerate() {
let call_id = format!(
"call_{}",
uuid::Uuid::new_v4().to_string().replace('-', "")[..24].to_string()
&uuid::Uuid::new_v4().to_string().replace('-', "")[..24]
);
let arguments = serde_json::to_string(&fc.args).unwrap_or_default();
tool_calls.push(serde_json::json!({
@@ -885,7 +907,7 @@ async fn chat_completions_stream(
did_unblock_ls = true;
let (new_tx, new_rx) = tokio::sync::mpsc::channel(64);
state.mitm_store.set_channel(&cascade_id, new_tx).await;
let _ = state.mitm_store.take_any_function_calls().await;
*rx = new_rx;
debug!(
@@ -1111,7 +1133,7 @@ async fn chat_completions_stream(
// Keep-alive comment every ~5 iterations
keepalive_counter += 1;
if keepalive_counter % 5 == 0 {
if keepalive_counter.is_multiple_of(5) {
yield Ok(Event::default().comment("keepalive"));
}
@@ -1193,21 +1215,26 @@ async fn chat_completions_sync(
// Record trace data
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: result.text.len(),
thinking_len: result.thinking.as_ref().map_or(0, |s| s.len()),
text_preview: result.text.chars().take(200).collect(),
finish_reason: Some(finish_reason.to_string()),
function_calls: Vec::new(),
grounding: false,
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: result.text.len(),
thinking_len: result.thinking.as_ref().map_or(0, |s| s.len()),
text_preview: result.text.chars().take(200).collect(),
finish_reason: Some(finish_reason.to_string()),
function_calls: Vec::new(),
grounding: false,
},
)
.await;
if prompt_tokens > 0 || completion_tokens > 0 {
t.set_usage(crate::trace::TrackedUsage {
input_tokens: prompt_tokens,
output_tokens: completion_tokens,
thinking_tokens: thinking_tokens,
thinking_tokens,
cache_read: cached_tokens,
}).await;
})
.await;
}
t.finish("completed").await;
}

266
src/api/gemini.rs
View File

@@ -90,7 +90,6 @@ pub(crate) struct GeminiRequest {
use super::util::default_timeout;
/// Build Gemini-format usageMetadata from MITM store.
async fn build_usage_metadata(
store: &crate::mitm::store::MitmStore,
@@ -117,8 +116,6 @@ async fn build_usage_metadata(
}
}
/// POST /v1beta/*path — handles both :generateContent and :streamGenerateContent
///
/// Parses paths like:
@@ -145,7 +142,9 @@ pub(crate) async fn handle_gemini_v1beta(
_ => {
return err_response(
StatusCode::BAD_REQUEST,
format!("Unknown action: {action}. Use :generateContent or :streamGenerateContent"),
format!(
"Unknown action: {action}. Use :generateContent or :streamGenerateContent"
),
"invalid_request_error",
);
}
@@ -153,7 +152,9 @@ pub(crate) async fn handle_gemini_v1beta(
} else {
return err_response(
StatusCode::BAD_REQUEST,
format!("Invalid path: /v1beta/{path}. Expected /v1beta/models/{{model}}:generateContent"),
format!(
"Invalid path: /v1beta/{path}. Expected /v1beta/models/{{model}}:generateContent"
),
"invalid_request_error",
);
}
@@ -201,8 +202,13 @@ async fn handle_gemini_inner(
// Extract text from the last user message.
let mut text_parts: Vec<String> = Vec::new();
for content in contents.iter().rev() {
let role = content.get("role").and_then(|r| r.as_str()).unwrap_or("user");
if role != "user" { continue; }
let role = content
.get("role")
.and_then(|r| r.as_str())
.unwrap_or("user");
if role != "user" {
continue;
}
if let Some(parts) = content.get("parts").and_then(|p| p.as_array()) {
for part in parts {
if let Some(text) = part.get("text").and_then(|t| t.as_str()) {
@@ -224,7 +230,9 @@ async fn handle_gemini_inner(
}
}
}
if !text_parts.is_empty() { break; }
if !text_parts.is_empty() {
break;
}
}
if text_parts.is_empty() {
return err_response(
@@ -298,7 +306,9 @@ async fn handle_gemini_inner(
// Tools (already in Gemini format)
let tools = body.tools.as_ref().and_then(|t| {
if t.is_empty() { None } else {
if t.is_empty() {
None
} else {
info!(count = t.len(), "Gemini-native tools for MITM injection");
Some(t.clone())
}
@@ -382,7 +392,10 @@ async fn handle_gemini_inner(
// Build tool rounds now that cascade_id is known
let mut tool_rounds: Vec<crate::mitm::store::ToolRound> = Vec::new();
if !pending_tool_results.is_empty() {
let last_calls = state.mitm_store.take_function_calls(&cascade_id).await
let last_calls = state
.mitm_store
.take_function_calls(&cascade_id)
.await
.unwrap_or_default();
tool_rounds.push(crate::mitm::store::ToolRound {
calls: last_calls,
@@ -391,7 +404,9 @@ async fn handle_gemini_inner(
}
// Start debug trace
let trace = state.trace.start(&cascade_id, "POST gemini", &model_name, body.stream);
let trace = state
.trace
.start(&cascade_id, "POST gemini", model_name, body.stream);
if let Some(ref t) = trace {
t.set_client_request(crate::trace::ClientRequestSummary {
message_count: 1,
@@ -401,34 +416,43 @@ async fn handle_gemini_inner(
user_text_preview: user_text.chars().take(200).collect(),
system_prompt: false,
has_image: image.is_some(),
}).await;
})
.await;
t.start_turn().await;
}
let mitm_gate = std::sync::Arc::new(tokio::sync::Notify::new());
let mitm_gate_clone = mitm_gate.clone();
state.mitm_store.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: user_text.clone(),
event_channel: event_tx,
generation_params,
pending_image,
tools,
tool_config,
pending_tool_results,
tool_rounds,
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
}).await;
state
.mitm_store
.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: user_text.clone(),
event_channel: event_tx,
generation_params,
pending_image,
tools,
tool_config,
pending_tool_results,
tool_rounds,
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
})
.await;
// Send REAL user text to LS (no more dummy ".")
match state
.backend
.send_message_with_image(&cascade_id, &format!(".<cid:{}>", cascade_id), model.model_enum, image.as_ref())
.send_message_with_image(
&cascade_id,
&format!(".<cid:{}>", cascade_id),
model.model_enum,
image.as_ref(),
)
.await
{
Ok((200, _)) => {
@@ -458,15 +482,16 @@ async fn handle_gemini_inner(
// Wait for MITM gate: 5s -> 502 if MITM enabled
let gate_start = std::time::Instant::now();
let gate_matched = tokio::time::timeout(
std::time::Duration::from_secs(5),
mitm_gate.notified(),
).await;
let gate_matched =
tokio::time::timeout(std::time::Duration::from_secs(5), mitm_gate.notified()).await;
let gate_wait_ms = gate_start.elapsed().as_millis() as u64;
if gate_matched.is_err() {
if state.mitm_enabled {
state.mitm_store.remove_request(&cascade_id).await;
if let Some(ref t) = trace { t.record_error("MITM gate timeout (5s)".to_string()).await; t.finish("mitm_timeout").await; }
if let Some(ref t) = trace {
t.record_error("MITM gate timeout (5s)".to_string()).await;
t.finish("mitm_timeout").await;
}
return err_response(
StatusCode::BAD_GATEWAY,
"MITM proxy did not match request within 5s".to_string(),
@@ -476,7 +501,9 @@ async fn handle_gemini_inner(
warn!(cascade = %cascade_id, "MITM gate timeout (--no-mitm mode)");
} else {
debug!(cascade = %cascade_id, gate_wait_ms, "MITM gate signaled -- request matched");
if let Some(ref t) = trace { t.record_mitm_match(0, gate_wait_ms).await; }
if let Some(ref t) = trace {
t.record_mitm_match(0, gate_wait_ms).await;
}
}
// Dispatch to sync or stream
@@ -516,12 +543,22 @@ async fn gemini_sync(
while let Some(event) = tokio::time::timeout(
std::time::Duration::from_secs(timeout.saturating_sub(start.elapsed().as_secs())),
rx.recv(),
).await.ok().flatten() {
)
.await
.ok()
.flatten()
{
use crate::mitm::store::MitmEvent;
match event {
MitmEvent::ThinkingDelta(t) => { acc_thinking = Some(t); }
MitmEvent::TextDelta(t) => { acc_text = t; }
MitmEvent::Usage(u) => { last_usage = Some(u); }
MitmEvent::ThinkingDelta(t) => {
acc_thinking = Some(t);
}
MitmEvent::TextDelta(t) => {
acc_text = t;
}
MitmEvent::Usage(u) => {
last_usage = Some(u);
}
MitmEvent::Grounding(_) => {}
MitmEvent::FunctionCall(calls) => {
let parts: Vec<serde_json::Value> = calls
@@ -536,18 +573,29 @@ async fn gemini_sync(
})
.collect();
if let Some(ref t) = trace {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls.iter().map(|fc| {
crate::trace::FunctionCallSummary {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls
.iter()
.map(|fc| crate::trace::FunctionCallSummary {
name: fc.name.clone(),
args_preview: serde_json::to_string(&fc.args).unwrap_or_default().chars().take(200).collect(),
}
}).collect();
t.record_response(0, crate::trace::ResponseSummary {
text_len: 0, thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: String::new(),
finish_reason: Some("STOP".to_string()),
function_calls: fc_summaries, grounding: false,
}).await;
args_preview: serde_json::to_string(&fc.args)
.unwrap_or_default()
.chars()
.take(200)
.collect(),
})
.collect();
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: 0,
thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: String::new(),
finish_reason: Some("STOP".to_string()),
function_calls: fc_summaries,
grounding: false,
},
)
.await;
t.finish("tool_call").await;
}
state.mitm_store.remove_request(&cascade_id).await;
@@ -573,7 +621,7 @@ async fn gemini_sync(
// Reinstall channel and unblock gate.
let (new_tx, new_rx) = tokio::sync::mpsc::channel(64);
state.mitm_store.set_channel(&cascade_id, new_tx).await;
let _ = state.mitm_store.take_any_function_calls().await;
rx = new_rx;
debug!(
@@ -588,14 +636,26 @@ async fn gemini_sync(
}
parts.push(serde_json::json!({"text": acc_text}));
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: acc_text.len(), thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: acc_text.chars().take(200).collect(),
finish_reason: Some("STOP".to_string()),
function_calls: Vec::new(), grounding: false,
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: acc_text.len(),
thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: acc_text.chars().take(200).collect(),
finish_reason: Some("STOP".to_string()),
function_calls: Vec::new(),
grounding: false,
},
)
.await;
if let Some(ref u) = last_usage {
t.set_usage(crate::trace::TrackedUsage { input_tokens: u.input_tokens, output_tokens: u.output_tokens, thinking_tokens: u.thinking_output_tokens, cache_read: u.cache_read_input_tokens }).await;
t.set_usage(crate::trace::TrackedUsage {
input_tokens: u.input_tokens,
output_tokens: u.output_tokens,
thinking_tokens: u.thinking_output_tokens,
cache_read: u.cache_read_input_tokens,
})
.await;
}
t.finish("completed").await;
}
@@ -625,14 +685,26 @@ async fn gemini_sync(
}
MitmEvent::UpstreamError(err) => {
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: acc_text.len(), thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: acc_text.chars().take(200).collect(),
finish_reason: Some("STOP".to_string()),
function_calls: Vec::new(), grounding: false,
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: acc_text.len(),
thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: acc_text.chars().take(200).collect(),
finish_reason: Some("STOP".to_string()),
function_calls: Vec::new(),
grounding: false,
},
)
.await;
if let Some(ref u) = last_usage {
t.set_usage(crate::trace::TrackedUsage { input_tokens: u.input_tokens, output_tokens: u.output_tokens, thinking_tokens: u.thinking_output_tokens, cache_read: u.cache_read_input_tokens }).await;
t.set_usage(crate::trace::TrackedUsage {
input_tokens: u.input_tokens,
output_tokens: u.output_tokens,
thinking_tokens: u.thinking_output_tokens,
cache_read: u.cache_read_input_tokens,
})
.await;
}
t.finish("upstream_error").await;
}
@@ -644,7 +716,8 @@ async fn gemini_sync(
// Timeout
if let Some(ref t) = trace {
t.record_error(format!("Timeout: no response after {timeout}s")).await;
t.record_error(format!("Timeout: no response after {timeout}s"))
.await;
t.finish("timeout").await;
}
state.mitm_store.remove_request(&cascade_id).await;
@@ -658,7 +731,7 @@ async fn gemini_sync(
}
})),
)
.into_response();
.into_response();
}
// ── Normal LS path (no custom tools) ──
@@ -691,20 +764,29 @@ async fn gemini_sync(
// Record trace
if let Some(ref t) = trace {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls.iter().map(|fc| {
crate::trace::FunctionCallSummary {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls
.iter()
.map(|fc| crate::trace::FunctionCallSummary {
name: fc.name.clone(),
args_preview: serde_json::to_string(&fc.args).unwrap_or_default().chars().take(200).collect(),
}
}).collect();
t.record_response(0, crate::trace::ResponseSummary {
text_len: 0,
thinking_len: 0,
text_preview: String::new(),
finish_reason: Some("STOP".to_string()),
function_calls: fc_summaries,
grounding: false,
}).await;
args_preview: serde_json::to_string(&fc.args)
.unwrap_or_default()
.chars()
.take(200)
.collect(),
})
.collect();
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: 0,
thinking_len: 0,
text_preview: String::new(),
finish_reason: Some("STOP".to_string()),
function_calls: fc_summaries,
grounding: false,
},
)
.await;
t.finish("tool_call").await;
}
@@ -731,14 +813,18 @@ async fn gemini_sync(
// Record trace
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: poll_result.text.len(),
thinking_len: poll_result.thinking.as_ref().map_or(0, |s| s.len()),
text_preview: poll_result.text.chars().take(200).collect(),
finish_reason: Some("STOP".to_string()),
function_calls: Vec::new(),
grounding: false,
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: poll_result.text.len(),
thinking_len: poll_result.thinking.as_ref().map_or(0, |s| s.len()),
text_preview: poll_result.text.chars().take(200).collect(),
finish_reason: Some("STOP".to_string()),
function_calls: Vec::new(),
grounding: false,
},
)
.await;
t.finish("completed").await;
}
@@ -904,7 +990,7 @@ async fn gemini_stream(
did_unblock_ls = true;
let (new_tx, new_rx) = tokio::sync::mpsc::channel(64);
state.mitm_store.set_channel(&cascade_id, new_tx).await;
let _ = state.mitm_store.take_any_function_calls().await;
rx = new_rx;
debug!(

5
src/api/mod.rs
View File

@@ -48,10 +48,7 @@ pub fn router(state: Arc<AppState>) -> Router {
"/v1/chat/completions",
post(completions::handle_completions),
)
.route(
"/v1beta/{*path}",
post(gemini::handle_gemini_v1beta),
)
.route("/v1beta/{*path}", post(gemini::handle_gemini_v1beta))
.route("/v1/models", get(handle_models))
.route("/v1/search", get(search::handle_search_get))
.route("/v1/search", post(search::handle_search_post))

280
src/api/responses.rs
View File

@@ -142,10 +142,6 @@ fn extract_responses_input(
(final_text, tool_results, image)
}
/// Response-specific data for building a Response object.
struct ResponseData {
id: String,
@@ -270,7 +266,7 @@ pub(crate) async fn handle_responses(
// ── Build per-request state locally ──────────────────────────────────
// Detect web_search_preview tool (OpenAI spec) → enable Google Search grounding
let has_web_search = body.tools.as_ref().map_or(false, |tools| {
let has_web_search = body.tools.as_ref().is_some_and(|tools| {
tools.iter().any(|t| {
let t_type = t["type"].as_str().unwrap_or("");
t_type == "web_search_preview" || t_type == "web_search"
@@ -280,14 +276,14 @@ pub(crate) async fn handle_responses(
// Convert OpenAI tools to Gemini format
let tools = body.tools.as_ref().and_then(|t| {
let gemini_tools = openai_tools_to_gemini(t);
if gemini_tools.is_empty() { None } else {
if gemini_tools.is_empty() {
None
} else {
info!(count = t.len(), "Client tools for MITM injection");
Some(gemini_tools)
}
});
let tool_config = body.tool_choice.as_ref().map(|choice| {
openai_tool_choice_to_gemini(choice)
});
let tool_config = body.tool_choice.as_ref().map(openai_tool_choice_to_gemini);
// Build generation params locally
let (response_mime_type, response_schema, text_format) = if let Some(ref text_val) = body.text {
@@ -372,7 +368,10 @@ pub(crate) async fn handle_responses(
let mut tool_rounds: Vec<crate::mitm::store::ToolRound> = Vec::new();
if is_tool_result_turn && !pending_tool_results.is_empty() {
// Get last captured function calls from the previous request context
let last_calls = state.mitm_store.take_function_calls(&cascade_id).await
let last_calls = state
.mitm_store
.take_function_calls(&cascade_id)
.await
.unwrap_or_default();
tool_rounds.push(crate::mitm::store::ToolRound {
calls: last_calls,
@@ -381,7 +380,9 @@ pub(crate) async fn handle_responses(
}
// Start debug trace
let trace = state.trace.start(&cascade_id, "POST /v1/responses", &model.name, body.stream);
let trace = state
.trace
.start(&cascade_id, "POST /v1/responses", model.name, body.stream);
if let Some(ref t) = trace {
t.set_client_request(crate::trace::ClientRequestSummary {
message_count: if is_tool_result_turn { 0 } else { 1 },
@@ -391,34 +392,43 @@ pub(crate) async fn handle_responses(
user_text_preview: user_text.chars().take(200).collect(),
system_prompt: body.instructions.is_some(),
has_image: image.is_some(),
}).await;
})
.await;
t.start_turn().await;
}
let mitm_gate = std::sync::Arc::new(tokio::sync::Notify::new());
let mitm_gate_clone = mitm_gate.clone();
state.mitm_store.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: user_text.clone(),
event_channel: event_tx,
generation_params,
pending_image,
tools,
tool_config,
pending_tool_results,
tool_rounds,
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
}).await;
state
.mitm_store
.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: user_text.clone(),
event_channel: event_tx,
generation_params,
pending_image,
tools,
tool_config,
pending_tool_results,
tool_rounds,
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
})
.await;
// Send REAL user text to LS
match state
.backend
.send_message_with_image(&cascade_id, &format!(".<cid:{}>", cascade_id), model.model_enum, image.as_ref())
.send_message_with_image(
&cascade_id,
&format!(".<cid:{}>", cascade_id),
model.model_enum,
image.as_ref(),
)
.await
{
Ok((200, _)) => {
@@ -448,15 +458,16 @@ pub(crate) async fn handle_responses(
// Wait for MITM gate: 5s → 502 if MITM enabled
let gate_start = std::time::Instant::now();
let gate_matched = tokio::time::timeout(
std::time::Duration::from_secs(5),
mitm_gate.notified(),
).await;
let gate_matched =
tokio::time::timeout(std::time::Duration::from_secs(5), mitm_gate.notified()).await;
let gate_wait_ms = gate_start.elapsed().as_millis() as u64;
if gate_matched.is_err() {
if state.mitm_enabled {
state.mitm_store.remove_request(&cascade_id).await;
if let Some(ref t) = trace { t.record_error("MITM gate timeout (5s)".to_string()).await; t.finish("mitm_timeout").await; }
if let Some(ref t) = trace {
t.record_error("MITM gate timeout (5s)".to_string()).await;
t.finish("mitm_timeout").await;
}
return err_response(
StatusCode::BAD_GATEWAY,
"MITM proxy did not match request within 5s".to_string(),
@@ -466,7 +477,9 @@ pub(crate) async fn handle_responses(
warn!(cascade = %cascade_id, "MITM gate timeout (--no-mitm mode)");
} else {
debug!(cascade = %cascade_id, gate_wait_ms, "MITM gate signaled — request matched");
if let Some(ref t) = trace { t.record_mitm_match(0, gate_wait_ms).await; }
if let Some(ref t) = trace {
t.record_mitm_match(0, gate_wait_ms).await;
}
}
// Capture request params for response building
@@ -655,12 +668,22 @@ async fn handle_responses_sync(
while let Some(event) = tokio::time::timeout(
std::time::Duration::from_secs(timeout.saturating_sub(start.elapsed().as_secs())),
rx.recv(),
).await.ok().flatten() {
)
.await
.ok()
.flatten()
{
use crate::mitm::store::MitmEvent;
match event {
MitmEvent::ThinkingDelta(t) => { acc_thinking = Some(t); }
MitmEvent::TextDelta(t) => { acc_text = t; }
MitmEvent::Usage(u) => { _last_usage = Some(u); }
MitmEvent::ThinkingDelta(t) => {
acc_thinking = Some(t);
}
MitmEvent::TextDelta(t) => {
acc_text = t;
}
MitmEvent::Usage(u) => {
_last_usage = Some(u);
}
MitmEvent::Grounding(_) => {} // stored by proxy directly
MitmEvent::FunctionCall(raw_calls) => {
let calls: Vec<_> = if let Some(max) = params.max_tool_calls {
@@ -672,38 +695,57 @@ async fn handle_responses_sync(
for fc in &calls {
let call_id = format!(
"call_{}",
uuid::Uuid::new_v4().to_string().replace('-', "")[..24].to_string()
&uuid::Uuid::new_v4().to_string().replace('-', "")[..24]
);
state.mitm_store.register_call_id(&cascade_id, call_id.clone(), fc.name.clone()).await;
state
.mitm_store
.register_call_id(&cascade_id, call_id.clone(), fc.name.clone())
.await;
let arguments = serde_json::to_string(&fc.args).unwrap_or_default();
output_items.push(build_function_call_output(&call_id, &fc.name, &arguments));
output_items
.push(build_function_call_output(&call_id, &fc.name, &arguments));
}
let (usage, _) = usage_from_poll(
&state.mitm_store, &cascade_id, &None, &params.user_text, "",
).await;
&state.mitm_store,
&cascade_id,
&None,
&params.user_text,
"",
)
.await;
state.mitm_store.remove_request(&cascade_id).await;
// Record trace before usage is moved
if let Some(ref t) = trace {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls.iter().map(|fc| {
crate::trace::FunctionCallSummary {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls
.iter()
.map(|fc| crate::trace::FunctionCallSummary {
name: fc.name.clone(),
args_preview: serde_json::to_string(&fc.args).unwrap_or_default().chars().take(200).collect(),
}
}).collect();
t.record_response(0, crate::trace::ResponseSummary {
text_len: 0,
thinking_len: 0,
text_preview: String::new(),
finish_reason: Some("tool_calls".to_string()),
function_calls: fc_summaries,
grounding: false,
}).await;
args_preview: serde_json::to_string(&fc.args)
.unwrap_or_default()
.chars()
.take(200)
.collect(),
})
.collect();
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: 0,
thinking_len: 0,
text_preview: String::new(),
finish_reason: Some("tool_calls".to_string()),
function_calls: fc_summaries,
grounding: false,
},
)
.await;
t.set_usage(crate::trace::TrackedUsage {
input_tokens: usage.input_tokens,
output_tokens: usage.output_tokens,
thinking_tokens: usage.output_tokens_details.reasoning_tokens,
cache_read: usage.input_tokens_details.cached_tokens,
}).await;
})
.await;
t.finish("tool_call").await;
}
let resp = build_response_object(
@@ -731,7 +773,7 @@ async fn handle_responses_sync(
// Reinstall channel and unblock gate.
let (new_tx, new_rx) = tokio::sync::mpsc::channel(64);
state.mitm_store.set_channel(&cascade_id, new_tx).await;
let _ = state.mitm_store.take_any_function_calls().await;
rx = new_rx;
debug!(
@@ -741,33 +783,44 @@ async fn handle_responses_sync(
continue;
}
let (usage, _) = usage_from_poll(
&state.mitm_store, &cascade_id, &None, &params.user_text, &acc_text,
).await;
&state.mitm_store,
&cascade_id,
&None,
&params.user_text,
&acc_text,
)
.await;
state.mitm_store.remove_request(&cascade_id).await;
let mut output_items: Vec<serde_json::Value> = Vec::new();
if let Some(ref t) = acc_thinking {
output_items.push(build_reasoning_output(t));
}
let msg_id = format!("msg_{}", uuid::Uuid::new_v4().to_string().replace('-', ""));
let msg_id =
format!("msg_{}", uuid::Uuid::new_v4().to_string().replace('-', ""));
output_items.push(build_message_output(&msg_id, &acc_text));
// Record trace before usage is moved
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: acc_text.len(),
thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: acc_text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(),
grounding: false,
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: acc_text.len(),
thinking_len: acc_thinking.as_ref().map_or(0, |s| s.len()),
text_preview: acc_text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(),
grounding: false,
},
)
.await;
t.set_usage(crate::trace::TrackedUsage {
input_tokens: usage.input_tokens,
output_tokens: usage.output_tokens,
thinking_tokens: usage.output_tokens_details.reasoning_tokens,
cache_read: usage.input_tokens_details.cached_tokens,
}).await;
})
.await;
t.finish("completed").await;
}
let resp = build_response_object(
@@ -787,7 +840,14 @@ async fn handle_responses_sync(
}
MitmEvent::UpstreamError(err) => {
state.mitm_store.remove_request(&cascade_id).await;
if let Some(ref t) = trace { t.record_error(format!("Upstream: {}", err.message.as_deref().unwrap_or("unknown"))).await; t.finish("upstream_error").await; }
if let Some(ref t) = trace {
t.record_error(format!(
"Upstream: {}",
err.message.as_deref().unwrap_or("unknown")
))
.await;
t.finish("upstream_error").await;
}
return upstream_err_response(&err);
}
}
@@ -795,7 +855,10 @@ async fn handle_responses_sync(
// Timeout
state.mitm_store.remove_request(&cascade_id).await;
if let Some(ref t) = trace { t.record_error(format!("Timeout: {}s", timeout)).await; t.finish("timeout").await; }
if let Some(ref t) = trace {
t.record_error(format!("Timeout: {}s", timeout)).await;
t.finish("timeout").await;
}
return err_response(
StatusCode::GATEWAY_TIMEOUT,
format!("Timeout: no response from Google API after {timeout}s"),
@@ -834,7 +897,7 @@ async fn handle_responses_sync(
for fc in calls {
let call_id = format!(
"call_{}",
uuid::Uuid::new_v4().to_string().replace('-', "")[..24].to_string()
&uuid::Uuid::new_v4().to_string().replace('-', "")[..24]
);
// Register call_id → name mapping for tool result routing
state
@@ -858,26 +921,36 @@ async fn handle_responses_sync(
// Record trace before usage is moved
if let Some(ref t) = trace {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls.iter().map(|fc| {
crate::trace::FunctionCallSummary {
let fc_summaries: Vec<crate::trace::FunctionCallSummary> = calls
.iter()
.map(|fc| crate::trace::FunctionCallSummary {
name: fc.name.clone(),
args_preview: serde_json::to_string(&fc.args).unwrap_or_default().chars().take(200).collect(),
}
}).collect();
t.record_response(0, crate::trace::ResponseSummary {
text_len: poll_result.text.len(),
thinking_len: poll_result.thinking.as_ref().map_or(0, |s| s.len()),
text_preview: String::new(),
finish_reason: Some("tool_calls".to_string()),
function_calls: fc_summaries,
grounding: false,
}).await;
args_preview: serde_json::to_string(&fc.args)
.unwrap_or_default()
.chars()
.take(200)
.collect(),
})
.collect();
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: poll_result.text.len(),
thinking_len: poll_result.thinking.as_ref().map_or(0, |s| s.len()),
text_preview: String::new(),
finish_reason: Some("tool_calls".to_string()),
function_calls: fc_summaries,
grounding: false,
},
)
.await;
t.set_usage(crate::trace::TrackedUsage {
input_tokens: usage.input_tokens,
output_tokens: usage.output_tokens,
thinking_tokens: usage.output_tokens_details.reasoning_tokens,
cache_read: usage.input_tokens_details.cached_tokens,
}).await;
})
.await;
t.finish("tool_call").await;
}
@@ -920,20 +993,25 @@ async fn handle_responses_sync(
// Record trace before usage is moved
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: poll_result.text.len(),
thinking_len: thinking_text.as_ref().map_or(0, |s| s.len()),
text_preview: poll_result.text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(),
grounding: false,
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: poll_result.text.len(),
thinking_len: thinking_text.as_ref().map_or(0, |s| s.len()),
text_preview: poll_result.text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(),
grounding: false,
},
)
.await;
t.set_usage(crate::trace::TrackedUsage {
input_tokens: usage.input_tokens,
output_tokens: usage.output_tokens,
thinking_tokens: usage.output_tokens_details.reasoning_tokens,
cache_read: usage.input_tokens_details.cached_tokens,
}).await;
})
.await;
t.finish("completed").await;
}
@@ -1184,7 +1262,7 @@ async fn handle_responses_stream(
for (i, fc) in calls.iter().enumerate() {
let call_id = format!(
"call_{}",
uuid::Uuid::new_v4().to_string().replace('-', "")[..24].to_string()
&uuid::Uuid::new_v4().to_string().replace('-', "")[..24]
);
let arguments = serde_json::to_string(&fc.args).unwrap_or_default();
state.mitm_store.register_call_id(&cascade_id, call_id.clone(), fc.name.clone()).await;
@@ -1229,7 +1307,7 @@ async fn handle_responses_stream(
for fc in &calls {
let call_id = format!(
"call_{}",
uuid::Uuid::new_v4().to_string().replace('-', "")[..24].to_string()
&uuid::Uuid::new_v4().to_string().replace('-', "")[..24]
);
let arguments = serde_json::to_string(&fc.args).unwrap_or_default();
output_items.push(build_function_call_output(&call_id, &fc.name, &arguments));
@@ -1317,7 +1395,7 @@ async fn handle_responses_stream(
// Create a new channel and unblock the gate.
let (new_tx, new_rx) = tokio::sync::mpsc::channel(64);
state.mitm_store.set_channel(&cascade_id, new_tx).await;
let _ = state.mitm_store.take_any_function_calls().await;
rx = new_rx;
debug!(

215
src/api/search.rs
View File

@@ -139,7 +139,9 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
};
// Start debug trace
let trace = state.trace.start(&cascade_id, "POST /v1/search", model.name, false);
let trace = state
.trace
.start(&cascade_id, "POST /v1/search", model.name, false);
if let Some(ref t) = trace {
t.set_client_request(crate::trace::ClientRequestSummary {
message_count: 1,
@@ -149,35 +151,43 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
user_text_preview: body.query.chars().take(200).collect(),
system_prompt: false,
has_image: false,
}).await;
})
.await;
t.start_turn().await;
}
let mitm_gate = std::sync::Arc::new(tokio::sync::Notify::new());
let mitm_gate_clone = mitm_gate.clone();
let (mitm_tx, mut mitm_rx) = tokio::sync::mpsc::channel(64);
state.mitm_store.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: search_prompt.clone(),
event_channel: mitm_tx,
generation_params: Some(gp.clone()),
pending_image: None,
tools: None,
tool_config: None,
pending_tool_results: Vec::new(),
tool_rounds: Vec::new(),
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
}).await;
state
.mitm_store
.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: search_prompt.clone(),
event_channel: mitm_tx,
generation_params: Some(gp.clone()),
pending_image: None,
tools: None,
tool_config: None,
pending_tool_results: Vec::new(),
tool_rounds: Vec::new(),
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: mitm_gate_clone,
trace_handle: trace.clone(),
trace_turn: 0,
})
.await;
// Send dot to LS — real search prompt injected by MITM proxy
if let Err(e) = state
.backend
.send_message(&cascade_id, &format!(".<cid:{}>", cascade_id), model.model_enum)
.send_message(
&cascade_id,
&format!(".<cid:{}>", cascade_id),
model.model_enum,
)
.await
{
state.mitm_store.remove_request(&cascade_id).await;
@@ -190,10 +200,8 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
// ── Strict timeout cascade ───────────────────────────────────────────────
// 5s gate → MITM didn't match → 502
let gate_matched = tokio::time::timeout(
std::time::Duration::from_secs(5),
mitm_gate.notified(),
).await;
let gate_matched =
tokio::time::timeout(std::time::Duration::from_secs(5), mitm_gate.notified()).await;
if gate_matched.is_err() {
if state.mitm_enabled {
@@ -216,15 +224,21 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
let mut retries = 0u32;
const MAX_RETRIES: u32 = 3;
while let Some(event) = tokio::time::timeout(
std::time::Duration::from_secs(timeout),
mitm_rx.recv(),
).await.ok().flatten() {
while let Some(event) =
tokio::time::timeout(std::time::Duration::from_secs(timeout), mitm_rx.recv())
.await
.ok()
.flatten()
{
use crate::mitm::store::MitmEvent;
match event {
MitmEvent::TextDelta(t) => { response_text.push_str(&t); }
MitmEvent::TextDelta(t) => {
response_text.push_str(&t);
}
MitmEvent::ThinkingDelta(_) => {} // search doesn't use thinking
MitmEvent::Usage(u) => { last_usage = Some(u); }
MitmEvent::Usage(u) => {
last_usage = Some(u);
}
MitmEvent::Grounding(_) => {} // stored by proxy directly
MitmEvent::FunctionCall(_) => {} // not expected for search
MitmEvent::ResponseComplete => {
@@ -240,23 +254,26 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
}
let (new_tx, new_rx) = tokio::sync::mpsc::channel(64);
let new_gate = std::sync::Arc::new(tokio::sync::Notify::new());
state.mitm_store.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: search_prompt.clone(),
event_channel: new_tx,
generation_params: Some(gp.clone()),
pending_image: None,
tools: None,
tool_config: None,
pending_tool_results: Vec::new(),
tool_rounds: Vec::new(),
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: new_gate,
trace_handle: trace.clone(),
trace_turn: 0,
}).await;
state
.mitm_store
.register_request(crate::mitm::store::RequestContext {
cascade_id: cascade_id.clone(),
pending_user_text: search_prompt.clone(),
event_channel: new_tx,
generation_params: Some(gp.clone()),
pending_image: None,
tools: None,
tool_config: None,
pending_tool_results: Vec::new(),
tool_rounds: Vec::new(),
last_function_calls: Vec::new(),
call_id_to_name: std::collections::HashMap::new(),
created_at: std::time::Instant::now(),
gate: new_gate,
trace_handle: trace.clone(),
trace_turn: 0,
})
.await;
mitm_rx = new_rx;
tracing::debug!(
cascade = %cascade_id, retries,
@@ -268,7 +285,11 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
}
MitmEvent::UpstreamError(err) => {
if let Some(ref t) = trace {
t.record_error(format!("Upstream: {}", super::util::upstream_error_message(&err))).await;
t.record_error(format!(
"Upstream: {}",
super::util::upstream_error_message(&err)
))
.await;
t.finish("upstream_error").await;
}
state.mitm_store.remove_request(&cascade_id).await;
@@ -283,7 +304,10 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
if response_text.is_empty() && grounding.is_none() {
if let Some(ref t) = trace {
t.record_error(format!("Timeout: no search response after {timeout}s (retries: {retries})")).await;
t.record_error(format!(
"Timeout: no search response after {timeout}s (retries: {retries})"
))
.await;
t.finish("timeout").await;
}
return err_response(
@@ -296,21 +320,39 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
return {
// Finalize trace for channel-based path
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: response_text.len(), thinking_len: 0,
text_preview: response_text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(), grounding: grounding.is_some(),
}).await;
if let Some((it, ot)) = last_usage.as_ref().map(|u| (u.input_tokens, u.output_tokens)) {
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: response_text.len(),
thinking_len: 0,
text_preview: response_text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(),
grounding: grounding.is_some(),
},
)
.await;
if let Some((it, ot)) = last_usage
.as_ref()
.map(|u| (u.input_tokens, u.output_tokens))
{
t.set_usage(crate::trace::TrackedUsage {
input_tokens: it, output_tokens: ot,
thinking_tokens: 0, cache_read: 0,
}).await;
input_tokens: it,
output_tokens: ot,
thinking_tokens: 0,
cache_read: 0,
})
.await;
}
t.finish("completed").await;
}
build_search_response(&body.query, model.name, response_text, grounding, last_usage.map(|u| (u.input_tokens, u.output_tokens)))
build_search_response(
&body.query,
model.name,
response_text,
grounding,
last_usage.map(|u| (u.input_tokens, u.output_tokens)),
)
};
}
@@ -325,7 +367,11 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
let response_text = if !poll_result.text.is_empty() {
poll_result.text.clone()
} else {
state.mitm_store.take_response_text().await.unwrap_or_default()
state
.mitm_store
.take_response_text()
.await
.unwrap_or_default()
};
state.mitm_store.remove_request(&cascade_id).await;
@@ -333,16 +379,28 @@ async fn do_search(state: Arc<AppState>, body: SearchRequest) -> axum::response:
// Finalize trace for polling path
if let Some(ref t) = trace {
t.record_response(0, crate::trace::ResponseSummary {
text_len: response_text.len(), thinking_len: 0,
text_preview: response_text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(), grounding: grounding.is_some(),
}).await;
t.record_response(
0,
crate::trace::ResponseSummary {
text_len: response_text.len(),
thinking_len: 0,
text_preview: response_text.chars().take(200).collect(),
finish_reason: Some("stop".to_string()),
function_calls: Vec::new(),
grounding: grounding.is_some(),
},
)
.await;
t.finish("completed").await;
}
build_search_response(&body.query, model.name, response_text, grounding, poll_result.usage.map(|u| (u.input_tokens, u.output_tokens)))
build_search_response(
&body.query,
model.name,
response_text,
grounding,
poll_result.usage.map(|u| (u.input_tokens, u.output_tokens)),
)
}
fn build_search_response(
@@ -382,15 +440,18 @@ fn build_search_response(
let mut citations = Vec::new();
if let Some(supports) = gm.get("groundingSupports").and_then(|v| v.as_array()) {
for support in supports {
let text = support.get("segment")
let text = support
.get("segment")
.and_then(|s| s.get("text"))
.and_then(|v| v.as_str())
.unwrap_or("");
let indices: Vec<u64> = support.get("groundingChunkIndices")
let indices: Vec<u64> = support
.get("groundingChunkIndices")
.and_then(|v| v.as_array())
.map(|arr| arr.iter().filter_map(|i| i.as_u64()).collect())
.unwrap_or_default();
let scores: Vec<f64> = support.get("confidenceScores")
let scores: Vec<f64> = support
.get("confidenceScores")
.and_then(|v| v.as_array())
.map(|arr| arr.iter().filter_map(|s| s.as_f64()).collect())
.unwrap_or_default();
@@ -404,14 +465,20 @@ fn build_search_response(
}
// searchEntryPoint → rendered search widget HTML
let search_url = gm.get("searchEntryPoint")
let search_url = gm
.get("searchEntryPoint")
.and_then(|sep| sep.get("renderedContent"))
.and_then(|v| v.as_str());
// webSearchQueries → the actual queries Google used
let queries = gm.get("webSearchQueries")
let queries = gm
.get("webSearchQueries")
.and_then(|v| v.as_array())
.map(|arr| arr.iter().filter_map(|q| q.as_str().map(|s| s.to_string())).collect::<Vec<_>>());
.map(|arr| {
arr.iter()
.filter_map(|q| q.as_str().map(|s| s.to_string()))
.collect::<Vec<_>>()
});
response["results"] = serde_json::json!(search_results);
response["citations"] = serde_json::json!(citations);

18
src/api/util.rs
View File

@@ -64,16 +64,14 @@ pub(crate) fn upstream_err_response(
let param = serde_json::from_str::<serde_json::Value>(&err.body)
.ok()
.and_then(|v| {
v["error"]["details"]
.as_array()
.and_then(|details| {
details.iter().find_map(|d| {
d["fieldViolations"]
.as_array()
.and_then(|fv| fv.first())
.and_then(|v| v["field"].as_str().map(|s| s.to_string()))
})
v["error"]["details"].as_array().and_then(|details| {
details.iter().find_map(|d| {
d["fieldViolations"]
.as_array()
.and_then(|fv| fv.first())
.and_then(|v| v["field"].as_str().map(|s| s.to_string()))
})
})
});
let body = ErrorResponse {
@@ -127,8 +125,6 @@ pub(crate) fn default_timeout() -> u64 {
120
}
pub(crate) fn responses_sse_event(event_type: &str, data: serde_json::Value) -> Event {
Event::default()
.event(event_type)

10
src/backend.rs
View File

@@ -51,7 +51,10 @@ static STATIC_HEADERS: LazyLock<HeaderMap> = LazyLock::new(|| {
h.insert(HeaderName::from_static("sec-ch-ua-mobile"), hv("?0"));
h.insert(
HeaderName::from_static("sec-ch-ua-platform"),
hv(&format!("\"{}\"", crate::platform::Platform::detect().os_name)),
hv(&format!(
"\"{}\"",
crate::platform::Platform::detect().os_name
)),
);
h.insert("Sec-Fetch-Dest", hv("empty"));
h.insert("Sec-Fetch-Mode", hv("cors"));
@@ -501,10 +504,7 @@ fn discover() -> Result<BackendInner, String> {
// Try to find the real LS binary first (when MITM wrapper is installed,
// the wrapper is a shell script, while the real binary has .real suffix)
let pid_output = Command::new("sh")
.args([
"-c",
"pgrep -f 'language_server.*\\.real' | head -1",
])
.args(["-c", "pgrep -f 'language_server.*\\.real' | head -1"])
.output()
.map_err(|e| format!("pgrep failed: {e}"))?;

13
src/bin/zg.rs
View File

@@ -100,7 +100,14 @@ fn curl_get(path: &str) -> Option<String> {
fn curl_post(path: &str, body: &str) -> Option<String> {
let url = format!("{}{}", base_url(), path);
Command::new("curl")
.args(["-sf", &url, "-H", "Content-Type: application/json", "-d", body])
.args([
"-sf",
&url,
"-H",
"Content-Type: application/json",
"-d",
body,
])
.output()
.ok()
.filter(|o| o.status.success())
@@ -188,7 +195,9 @@ fn do_status() {
let text = String::from_utf8_lossy(&o.stdout);
// Print first 6 lines
for (i, line) in text.lines().enumerate() {
if i >= 6 { break; }
if i >= 6 {
break;
}
println!("{line}");
}
}

17
src/constants.rs
View File

@@ -59,12 +59,16 @@ fn find_install_dir() -> Option<String> {
#[cfg(target_os = "macos")]
let candidates = [
"/Applications/Antigravity.app/Contents",
&format!("{}/Applications/Antigravity.app/Contents", std::env::var("HOME").unwrap_or_default()),
&format!(
"{}/Applications/Antigravity.app/Contents",
std::env::var("HOME").unwrap_or_default()
),
];
#[cfg(target_os = "windows")]
let candidates = [
&format!("{}\\Programs\\Antigravity", std::env::var("LOCALAPPDATA").unwrap_or_default()),
];
let candidates = [&format!(
"{}\\Programs\\Antigravity",
std::env::var("LOCALAPPDATA").unwrap_or_default()
)];
#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
let candidates: [&str; 0] = [];
@@ -222,7 +226,10 @@ pub fn log_base() -> String {
/// Token file path.
pub fn token_file_path() -> String {
crate::platform::Platform::detect().token_path.to_string_lossy().to_string()
crate::platform::Platform::detect()
.token_path
.to_string_lossy()
.to_string()
}
/// User-Agent string matching the Electron webview — computed once.

5
src/main.rs
View File

@@ -26,10 +26,7 @@ use tracing::{info, warn};
use mitm::store::MitmStore;
#[derive(Parser)]
#[command(
name = "zerogravity",
about = "ZeroGravity — stealth LLM proxy"
)]
#[command(name = "zerogravity", about = "ZeroGravity — stealth LLM proxy")]
struct Cli {
/// Port to listen on
#[arg(long, default_value_t = 8741)]

17
src/mitm/intercept.rs
View File

@@ -133,7 +133,8 @@ impl StreamingAccumulator {
let args = fc["args"].clone();
// thoughtSignature is a SIBLING of functionCall in the part,
// not nested inside functionCall
let thought_signature = part.get("thoughtSignature")
let thought_signature = part
.get("thoughtSignature")
.and_then(|v| v.as_str())
.map(|s| s.to_string());
info!(
@@ -155,7 +156,9 @@ impl StreamingAccumulator {
// Capture non-thinking response text
else {
// Capture thoughtSignature from response parts (not function call parts)
if let Some(sig) = part.get("thoughtSignature").and_then(|v| v.as_str()) {
if let Some(sig) =
part.get("thoughtSignature").and_then(|v| v.as_str())
{
self.thinking_signature = Some(sig.to_string());
}
if let Some(text) = part["text"].as_str() {
@@ -619,7 +622,10 @@ data: {"response": {"candidates": [{"content": {"role": "model","parts": [{"text
let event = "data: {\"response\": {\"candidates\": [{\"content\": {\"role\": \"model\", \"parts\": [{\"functionCall\": {\"name\": \"read_file\", \"args\": {\"path\": \"/foo\"}}}]}, \"finishReason\": \"FUNCTION_CALL\"}], \"usageMetadata\": {\"promptTokenCount\": 50, \"candidatesTokenCount\": 5, \"totalTokenCount\": 55}, \"modelVersion\": \"gemini-3-flash\"}}\n";
parse_streaming_chunk(event, &mut acc);
assert!(acc.is_complete, "FUNCTION_CALL finishReason should set is_complete");
assert!(
acc.is_complete,
"FUNCTION_CALL finishReason should set is_complete"
);
assert_eq!(acc.stop_reason, Some("FUNCTION_CALL".to_string()));
assert_eq!(acc.function_calls.len(), 1);
assert_eq!(acc.function_calls[0].name, "read_file");
@@ -633,7 +639,10 @@ data: {"response": {"candidates": [{"content": {"role": "model","parts": [{"text
let event = "data: {\"response\": {\"candidates\": [{\"content\": {\"role\": \"model\", \"parts\": [{\"text\": \"truncated...\"}]}, \"finishReason\": \"MAX_TOKENS\"}], \"usageMetadata\": {\"promptTokenCount\": 50, \"candidatesTokenCount\": 100, \"totalTokenCount\": 150}}}\n";
parse_streaming_chunk(event, &mut acc);
assert!(acc.is_complete, "MAX_TOKENS finishReason should set is_complete");
assert!(
acc.is_complete,
"MAX_TOKENS finishReason should set is_complete"
);
assert_eq!(acc.stop_reason, Some("MAX_TOKENS".to_string()));
assert_eq!(acc.response_text, "truncated...");
}

360
src/mitm/modify.rs
View File

@@ -113,7 +113,10 @@ fn rewrite_system_instruction(json: &mut Value, changes: &mut Vec<String>) {
if let Some(identity_text) = extract_xml_section(&sys, "identity") {
let identity_clean = identity_text.trim().to_string();
let part0 = identity_clean.clone();
let part1 = format!("Please ignore following [ignore]{}[/ignore]", identity_clean);
let part1 = format!(
"Please ignore following [ignore]{}[/ignore]",
identity_clean
);
let mut extra_parts: Vec<Value> = json
.pointer("/request/systemInstruction/parts")
@@ -135,7 +138,9 @@ fn rewrite_system_instruction(json: &mut Value, changes: &mut Vec<String>) {
));
}
} else {
changes.push(format!("system instruction: cleared ({original_len} chars)"));
changes.push(format!(
"system instruction: cleared ({original_len} chars)"
));
json["request"]["systemInstruction"]["parts"][0]["text"] = Value::String(String::new());
}
}
@@ -185,12 +190,17 @@ fn strip_context_messages(json: &mut Value, changes: &mut Vec<String>) {
let mut m = text.clone();
// Conversation summaries
if let Some(c) = strip_between(&m, "# Conversation History\n", "</conversation_summaries>") {
if let Some(c) = strip_between(&m, "# Conversation History\n", "</conversation_summaries>")
{
m = c;
}
// <ADDITIONAL_METADATA> and <EPHEMERAL_MESSAGE>
if let Some(c) = strip_xml_section(&m, "ADDITIONAL_METADATA") { m = c; }
if let Some(c) = strip_xml_section(&m, "EPHEMERAL_MESSAGE") { m = c; }
if let Some(c) = strip_xml_section(&m, "ADDITIONAL_METADATA") {
m = c;
}
if let Some(c) = strip_xml_section(&m, "EPHEMERAL_MESSAGE") {
m = c;
}
// <cid:UUID> markers
while let Some(start) = m.find("<cid:") {
@@ -228,7 +238,9 @@ fn strip_context_messages(json: &mut Value, changes: &mut Vec<String>) {
return true;
}
}
msg["parts"][0]["text"].as_str().map_or(true, |t| !t.trim().is_empty())
msg["parts"][0]["text"]
.as_str()
.is_none_or(|t| !t.trim().is_empty())
});
let removed = before - contents.len();
@@ -242,7 +254,11 @@ fn strip_context_messages(json: &mut Value, changes: &mut Vec<String>) {
/// The LS receives "." as the user prompt. Antigravity wraps it in
/// `<USER_REQUEST>...</USER_REQUEST>` tags. This function swaps the dot for the
/// actual user text before sending to Google.
fn replace_dummy_prompt(json: &mut Value, tool_ctx: Option<&ToolContext>, changes: &mut Vec<String>) {
fn replace_dummy_prompt(
json: &mut Value,
tool_ctx: Option<&ToolContext>,
changes: &mut Vec<String>,
) {
let ctx = match tool_ctx {
Some(c) if !c.pending_user_text.is_empty() => c,
_ => return,
@@ -256,10 +272,13 @@ fn replace_dummy_prompt(json: &mut Value, tool_ctx: Option<&ToolContext>, change
};
for msg in contents.iter_mut() {
let is_user = msg.get("role")
let is_user = msg
.get("role")
.and_then(|r| r.as_str())
.map_or(true, |r| r == "user");
if !is_user { continue; }
.is_none_or(|r| r == "user");
if !is_user {
continue;
}
let text_val = match msg.pointer_mut("/parts/0/text") {
Some(v) => v,
@@ -268,12 +287,12 @@ fn replace_dummy_prompt(json: &mut Value, tool_ctx: Option<&ToolContext>, change
let old = text_val.as_str().unwrap_or("");
let is_dot_in_wrapper = old.contains("<USER_REQUEST>")
&& extract_xml_section(old, "USER_REQUEST").map_or(false, |inner| {
&& extract_xml_section(old, "USER_REQUEST").is_some_and(|inner| {
let t = inner.trim();
t == "." || t.starts_with(".<cid:")
});
let is_bare_dot = old.trim() == "."
|| (old.trim().starts_with(".<cid:") && old.trim().ends_with(">"));
let is_bare_dot =
old.trim() == "." || (old.trim().starts_with(".<cid:") && old.trim().ends_with(">"));
if is_dot_in_wrapper {
*text_val = Value::String(format!(
@@ -298,7 +317,11 @@ fn replace_dummy_prompt(json: &mut Value, tool_ctx: Option<&ToolContext>, change
/// Strip LS tools, inject client tools, clean up functionCall history, and
/// rewrite conversation history with tool call/response pairs.
fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, changes: &mut Vec<String>) {
fn manage_tools_and_history(
json: &mut Value,
tool_ctx: Option<&ToolContext>,
changes: &mut Vec<String>,
) {
let mut has_custom_tools = false;
// ── Strip LS tools, inject client tools ──────────────────────────────
@@ -313,13 +336,16 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
changes.push(format!("strip all {count} LS tools"));
}
if let Some(ref ctx) = tool_ctx {
if let Some(ctx) = tool_ctx {
if let Some(ref custom_tools) = ctx.tools {
for tool in custom_tools {
tools.push(tool.clone());
}
has_custom_tools = true;
changes.push(format!("inject {} custom tool group(s)", custom_tools.len()));
changes.push(format!(
"inject {} custom tool group(s)",
custom_tools.len()
));
// Override VALIDATED → AUTO for custom tools
if let Some(req) = json.get_mut("request").and_then(|v| v.as_object_mut()) {
@@ -327,7 +353,7 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
.get("toolConfig")
.and_then(|tc| tc.pointer("/functionCallingConfig/mode"))
.and_then(|m| m.as_str())
.map_or(false, |m| m == "VALIDATED");
== Some("VALIDATED");
if has_validated {
req.insert(
"toolConfig".to_string(),
@@ -344,7 +370,11 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
// ── Clean up when no tools remain ────────────────────────────────────
if STRIP_ALL_TOOLS && !has_custom_tools {
if let Some(req) = json.get_mut("request").and_then(|v| v.as_object_mut()) {
if req.get("tools").and_then(|v| v.as_array()).map_or(false, |a| a.is_empty()) {
if req
.get("tools")
.and_then(|v| v.as_array())
.is_some_and(|a| a.is_empty())
{
req.remove("tools");
changes.push("remove empty tools array".to_string());
}
@@ -360,7 +390,8 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
.as_ref()
.and_then(|ctx| ctx.tools.as_ref())
.map(|tools| {
tools.iter()
tools
.iter()
.filter_map(|t| t["functionDeclarations"].as_array())
.flatten()
.filter_map(|decl| decl["name"].as_str().map(|s| s.to_string()))
@@ -368,19 +399,26 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
})
.unwrap_or_default();
if let Some(contents) = json.pointer_mut("/request/contents").and_then(|v| v.as_array_mut()) {
if let Some(contents) = json
.pointer_mut("/request/contents")
.and_then(|v| v.as_array_mut())
{
let mut stripped_fc = 0usize;
for msg in contents.iter_mut() {
if let Some(parts) = msg.get_mut("parts").and_then(|v| v.as_array_mut()) {
let before = parts.len();
parts.retain(|part| {
if let Some(fc) = part.get("functionCall") {
return fc.get("name").and_then(|v| v.as_str())
.map_or(false, |n| custom_tool_names.contains(n));
return fc
.get("name")
.and_then(|v| v.as_str())
.is_some_and(|n| custom_tool_names.contains(n));
}
if let Some(fr) = part.get("functionResponse") {
return fr.get("name").and_then(|v| v.as_str())
.map_or(false, |n| custom_tool_names.contains(n));
return fr
.get("name")
.and_then(|v| v.as_str())
.is_some_and(|n| custom_tool_names.contains(n));
}
true
});
@@ -388,16 +426,20 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
}
}
contents.retain(|msg| {
msg.get("parts").and_then(|v| v.as_array()).map_or(true, |p| !p.is_empty())
msg.get("parts")
.and_then(|v| v.as_array())
.is_none_or(|p| !p.is_empty())
});
if stripped_fc > 0 {
changes.push(format!("strip {stripped_fc} functionCall/Response parts from history"));
changes.push(format!(
"strip {stripped_fc} functionCall/Response parts from history"
));
}
}
}
// ── Inject toolConfig if provided ────────────────────────────────────
if let Some(ref ctx) = tool_ctx {
if let Some(ctx) = tool_ctx {
if let Some(ref config) = ctx.tool_config {
if let Some(req) = json.get_mut("request").and_then(|v| v.as_object_mut()) {
req.insert("toolConfig".to_string(), config.clone());
@@ -412,7 +454,11 @@ fn manage_tools_and_history(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
/// Rewrite conversation history: replace placeholder model turns with real
/// functionCall parts and inject functionResponse user turns.
fn rewrite_tool_rounds(json: &mut Value, tool_ctx: Option<&ToolContext>, changes: &mut Vec<String>) {
fn rewrite_tool_rounds(
json: &mut Value,
tool_ctx: Option<&ToolContext>,
changes: &mut Vec<String>,
) {
let ctx = match tool_ctx {
Some(c) => c,
None => return,
@@ -429,7 +475,10 @@ fn rewrite_tool_rounds(json: &mut Value, tool_ctx: Option<&ToolContext>, changes
return;
};
let contents = match json.pointer_mut("/request/contents").and_then(|v| v.as_array_mut()) {
let contents = match json
.pointer_mut("/request/contents")
.and_then(|v| v.as_array_mut())
{
Some(c) => c,
None => return,
};
@@ -438,10 +487,14 @@ fn rewrite_tool_rounds(json: &mut Value, tool_ctx: Option<&ToolContext>, changes
let mut rewrites: Vec<(usize, usize)> = Vec::new();
let mut round_idx = 0;
for (i, msg) in contents.iter().enumerate() {
if round_idx >= rounds.len() { break; }
if round_idx >= rounds.len() {
break;
}
if msg["role"].as_str() == Some("model") {
if let Some(text) = msg["parts"][0]["text"].as_str() {
if text.contains("Tool call completed") || text.contains("Awaiting external tool result") {
if text.contains("Tool call completed")
|| text.contains("Awaiting external tool result")
{
rewrites.push((i, round_idx));
round_idx += 1;
}
@@ -455,34 +508,46 @@ fn rewrite_tool_rounds(json: &mut Value, tool_ctx: Option<&ToolContext>, changes
let actual_idx = *content_idx + insert_offset;
let round = &rounds[*round_idx];
let fc_parts: Vec<Value> = round.calls.iter().map(|fc| build_function_call_part(fc)).collect();
let fc_parts: Vec<Value> = round.calls.iter().map(build_function_call_part).collect();
contents[actual_idx]["parts"] = Value::Array(fc_parts);
if !round.results.is_empty() {
let fr_parts: Vec<Value> = round.results.iter()
.map(|r| serde_json::json!({"functionResponse": {"name": r.name, "response": r.result}}))
.collect();
contents.insert(actual_idx + 1, serde_json::json!({"role": "user", "parts": fr_parts}));
contents.insert(
actual_idx + 1,
serde_json::json!({"role": "user", "parts": fr_parts}),
);
insert_offset += 1;
}
}
if !rewrites.is_empty() {
changes.push(format!("rewrite {} tool round(s) in history", rewrites.len()));
changes.push(format!(
"rewrite {} tool round(s) in history",
rewrites.len()
));
} else {
// Append as new messages (no existing model turns to rewrite)
let insert_pos = contents.len();
let mut offset = 0;
for round in &rounds {
let fc_parts: Vec<Value> = round.calls.iter().map(|fc| build_function_call_part(fc)).collect();
contents.insert(insert_pos + offset, serde_json::json!({"role": "model", "parts": fc_parts}));
let fc_parts: Vec<Value> = round.calls.iter().map(build_function_call_part).collect();
contents.insert(
insert_pos + offset,
serde_json::json!({"role": "model", "parts": fc_parts}),
);
offset += 1;
if !round.results.is_empty() {
let fr_parts: Vec<Value> = round.results.iter()
.map(|r| serde_json::json!({"functionResponse": {"name": r.name, "response": r.result}}))
.collect();
contents.insert(insert_pos + offset, serde_json::json!({"role": "user", "parts": fr_parts}));
contents.insert(
insert_pos + offset,
serde_json::json!({"role": "user", "parts": fr_parts}),
);
offset += 1;
}
}
@@ -494,35 +559,48 @@ fn rewrite_tool_rounds(json: &mut Value, tool_ctx: Option<&ToolContext>, changes
}
/// Inject `includeThoughts` and `thinkingLevel` into generationConfig.
fn inject_thinking_config(json: &mut Value, tool_ctx: Option<&ToolContext>, changes: &mut Vec<String>) {
fn inject_thinking_config(
json: &mut Value,
tool_ctx: Option<&ToolContext>,
changes: &mut Vec<String>,
) {
let reasoning_effort = tool_ctx
.and_then(|ctx| ctx.generation_params.as_ref())
.and_then(|gp| gp.reasoning_effort.clone());
// Helper: inject into a thinkingConfig object
let inject = |tc: &mut serde_json::Map<String, Value>, changes: &mut Vec<String>, suffix: &str| {
if !tc.contains_key("includeThoughts") {
tc.insert("includeThoughts".to_string(), Value::Bool(true));
changes.push(format!("inject includeThoughts{suffix}"));
}
if let Some(ref effort) = reasoning_effort {
tc.insert("thinkingLevel".to_string(), Value::String(effort.clone()));
changes.push(format!("inject thinkingLevel={effort}{suffix}"));
}
};
let inject =
|tc: &mut serde_json::Map<String, Value>, changes: &mut Vec<String>, suffix: &str| {
if !tc.contains_key("includeThoughts") {
tc.insert("includeThoughts".to_string(), Value::Bool(true));
changes.push(format!("inject includeThoughts{suffix}"));
}
if let Some(ref effort) = reasoning_effort {
tc.insert("thinkingLevel".to_string(), Value::String(effort.clone()));
changes.push(format!("inject thinkingLevel={effort}{suffix}"));
}
};
if let Some(req) = json.get_mut("request").and_then(|v| v.as_object_mut()) {
let gc = req.entry("generationConfig").or_insert_with(|| serde_json::json!({}));
let gc = req
.entry("generationConfig")
.or_insert_with(|| serde_json::json!({}));
if let Some(gc) = gc.as_object_mut() {
let tc = gc.entry("thinkingConfig").or_insert_with(|| serde_json::json!({}));
let tc = gc
.entry("thinkingConfig")
.or_insert_with(|| serde_json::json!({}));
if let Some(tc) = tc.as_object_mut() {
inject(tc, changes, "");
}
}
} else if let Some(o) = json.as_object_mut() {
let gc = o.entry("generationConfig").or_insert_with(|| serde_json::json!({}));
let gc = o
.entry("generationConfig")
.or_insert_with(|| serde_json::json!({}));
if let Some(gc) = gc.as_object_mut() {
let tc = gc.entry("thinkingConfig").or_insert_with(|| serde_json::json!({}));
let tc = gc
.entry("thinkingConfig")
.or_insert_with(|| serde_json::json!({}));
if let Some(tc) = tc.as_object_mut() {
inject(tc, changes, " (top-level)");
}
@@ -531,16 +609,26 @@ fn inject_thinking_config(json: &mut Value, tool_ctx: Option<&ToolContext>, chan
}
/// Inject client-specified generation parameters (temperature, topP, etc.).
fn inject_generation_params(json: &mut Value, tool_ctx: Option<&ToolContext>, changes: &mut Vec<String>) {
fn inject_generation_params(
json: &mut Value,
tool_ctx: Option<&ToolContext>,
changes: &mut Vec<String>,
) {
let gp = match tool_ctx.and_then(|ctx| ctx.generation_params.as_ref()) {
Some(gp) => gp,
None => return,
};
let gc = if let Some(req) = json.get_mut("request").and_then(|v| v.as_object_mut()) {
Some(req.entry("generationConfig").or_insert_with(|| serde_json::json!({})))
Some(
req.entry("generationConfig")
.or_insert_with(|| serde_json::json!({})),
)
} else {
json.as_object_mut().map(|o| o.entry("generationConfig").or_insert_with(|| serde_json::json!({})))
json.as_object_mut().map(|o| {
o.entry("generationConfig")
.or_insert_with(|| serde_json::json!({}))
})
};
let gc = match gc.and_then(|v| v.as_object_mut()) {
@@ -549,15 +637,42 @@ fn inject_generation_params(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
};
let mut injected: Vec<String> = Vec::new();
if let Some(t) = gp.temperature { gc.insert("temperature".into(), serde_json::json!(t)); injected.push(format!("temperature={t}")); }
if let Some(p) = gp.top_p { gc.insert("topP".into(), serde_json::json!(p)); injected.push(format!("topP={p}")); }
if let Some(k) = gp.top_k { gc.insert("topK".into(), serde_json::json!(k)); injected.push(format!("topK={k}")); }
if let Some(m) = gp.max_output_tokens { gc.insert("maxOutputTokens".into(), serde_json::json!(m)); injected.push(format!("maxOutputTokens={m}")); }
if let Some(ref seqs) = gp.stop_sequences { gc.insert("stopSequences".into(), serde_json::json!(seqs)); injected.push(format!("stopSequences({})", seqs.len())); }
if let Some(fp) = gp.frequency_penalty { gc.insert("frequencyPenalty".into(), serde_json::json!(fp)); injected.push(format!("frequencyPenalty={fp}")); }
if let Some(pp) = gp.presence_penalty { gc.insert("presencePenalty".into(), serde_json::json!(pp)); injected.push(format!("presencePenalty={pp}")); }
if let Some(ref mime) = gp.response_mime_type { gc.insert("responseMimeType".into(), serde_json::json!(mime)); injected.push(format!("responseMimeType={mime}")); }
if let Some(ref schema) = gp.response_schema { gc.insert("responseSchema".into(), schema.clone()); injected.push("responseSchema=<schema>".to_string()); }
if let Some(t) = gp.temperature {
gc.insert("temperature".into(), serde_json::json!(t));
injected.push(format!("temperature={t}"));
}
if let Some(p) = gp.top_p {
gc.insert("topP".into(), serde_json::json!(p));
injected.push(format!("topP={p}"));
}
if let Some(k) = gp.top_k {
gc.insert("topK".into(), serde_json::json!(k));
injected.push(format!("topK={k}"));
}
if let Some(m) = gp.max_output_tokens {
gc.insert("maxOutputTokens".into(), serde_json::json!(m));
injected.push(format!("maxOutputTokens={m}"));
}
if let Some(ref seqs) = gp.stop_sequences {
gc.insert("stopSequences".into(), serde_json::json!(seqs));
injected.push(format!("stopSequences({})", seqs.len()));
}
if let Some(fp) = gp.frequency_penalty {
gc.insert("frequencyPenalty".into(), serde_json::json!(fp));
injected.push(format!("frequencyPenalty={fp}"));
}
if let Some(pp) = gp.presence_penalty {
gc.insert("presencePenalty".into(), serde_json::json!(pp));
injected.push(format!("presencePenalty={pp}"));
}
if let Some(ref mime) = gp.response_mime_type {
gc.insert("responseMimeType".into(), serde_json::json!(mime));
injected.push(format!("responseMimeType={mime}"));
}
if let Some(ref schema) = gp.response_schema {
gc.insert("responseSchema".into(), schema.clone());
injected.push("responseSchema=<schema>".to_string());
}
if !injected.is_empty() {
changes.push(format!("inject generationConfig: {}", injected.join(", ")));
@@ -565,23 +680,36 @@ fn inject_generation_params(json: &mut Value, tool_ctx: Option<&ToolContext>, ch
}
/// Inject a pending image as inlineData into the last user message.
fn inject_pending_image(json: &mut Value, tool_ctx: Option<&ToolContext>, changes: &mut Vec<String>) {
fn inject_pending_image(
json: &mut Value,
tool_ctx: Option<&ToolContext>,
changes: &mut Vec<String>,
) {
let img = match tool_ctx.and_then(|ctx| ctx.pending_image.as_ref()) {
Some(img) => img,
None => return,
};
let contents = match json.pointer_mut("/request/contents").and_then(|v| v.as_array_mut()) {
let contents = match json
.pointer_mut("/request/contents")
.and_then(|v| v.as_array_mut())
{
Some(c) => c,
None => return,
};
for msg in contents.iter_mut().rev() {
if msg["role"].as_str() != Some("user") { continue; }
if msg["role"].as_str() != Some("user") {
continue;
}
if let Some(parts) = msg.get_mut("parts").and_then(|v| v.as_array_mut()) {
parts.push(serde_json::json!({
"inlineData": { "mimeType": img.mime_type, "data": img.base64_data }
}));
changes.push(format!("inject image ({}; {} bytes base64)", img.mime_type, img.base64_data.len()));
changes.push(format!(
"inject image ({}; {} bytes base64)",
img.mime_type,
img.base64_data.len()
));
return;
}
}
@@ -1049,35 +1177,46 @@ mod tests {
// [4] model: functionCall(write_file) (was "Tool call completed")
// [5] user: functionResponse(write_file) (injected)
// [6] user: "[Tool result: write success]" (original LS turn)
assert_eq!(contents.len(), 7, "should have 7 turns (5 original + 2 injected)");
assert_eq!(
contents.len(),
7,
"should have 7 turns (5 original + 2 injected)"
);
// Check round 1: model turn rewritten to functionCall
assert_eq!(
contents[1]["parts"][0]["functionCall"]["name"].as_str().unwrap(),
contents[1]["parts"][0]["functionCall"]["name"]
.as_str()
.unwrap(),
"read_file"
);
assert_eq!(
contents[1]["parts"][0]["functionCall"]["args"]["path"].as_str().unwrap(),
contents[1]["parts"][0]["functionCall"]["args"]["path"]
.as_str()
.unwrap(),
"/foo"
);
// Check round 1: functionResponse injected
assert_eq!(contents[2]["role"].as_str().unwrap(), "user");
assert_eq!(
contents[2]["role"].as_str().unwrap(),
"user"
);
assert_eq!(
contents[2]["parts"][0]["functionResponse"]["name"].as_str().unwrap(),
contents[2]["parts"][0]["functionResponse"]["name"]
.as_str()
.unwrap(),
"read_file"
);
// Check round 2: model turn rewritten to functionCall
assert_eq!(
contents[4]["parts"][0]["functionCall"]["name"].as_str().unwrap(),
contents[4]["parts"][0]["functionCall"]["name"]
.as_str()
.unwrap(),
"write_file"
);
// Check round 2: functionResponse injected
assert_eq!(
contents[5]["parts"][0]["functionResponse"]["name"].as_str().unwrap(),
contents[5]["parts"][0]["functionResponse"]["name"]
.as_str()
.unwrap(),
"write_file"
);
}
@@ -1134,13 +1273,21 @@ mod tests {
let contents = result["request"]["contents"].as_array().unwrap();
// Should still work: model turn rewritten + functionResponse injected
assert_eq!(contents.len(), 4, "should have 4 turns (3 original + 1 injected)");
assert_eq!(
contents[1]["parts"][0]["functionCall"]["name"].as_str().unwrap(),
contents.len(),
4,
"should have 4 turns (3 original + 1 injected)"
);
assert_eq!(
contents[1]["parts"][0]["functionCall"]["name"]
.as_str()
.unwrap(),
"search"
);
assert_eq!(
contents[2]["parts"][0]["functionResponse"]["name"].as_str().unwrap(),
contents[2]["parts"][0]["functionResponse"]["name"]
.as_str()
.unwrap(),
"search"
);
}
@@ -1186,7 +1333,10 @@ mod tests {
// No rewriting — same number of turns
assert_eq!(contents.len(), 2);
assert_eq!(contents[1]["parts"][0]["text"].as_str().unwrap(), "Hi there!");
assert_eq!(
contents[1]["parts"][0]["text"].as_str().unwrap(),
"Hi there!"
);
}
#[test]
@@ -1223,20 +1373,18 @@ mod tests {
generation_params: None,
pending_image: None,
pending_user_text: String::new(),
tool_rounds: vec![
ToolRound {
calls: vec![CapturedFunctionCall {
name: "web_search".to_string(),
args: serde_json::json!({"query": "rust news"}),
thought_signature: None,
captured_at: 0,
}],
results: vec![PendingToolResult {
name: "web_search".to_string(),
result: serde_json::json!({"results": "some results"}),
}],
},
],
tool_rounds: vec![ToolRound {
calls: vec![CapturedFunctionCall {
name: "web_search".to_string(),
args: serde_json::json!({"query": "rust news"}),
thought_signature: None,
captured_at: 0,
}],
results: vec![PendingToolResult {
name: "web_search".to_string(),
result: serde_json::json!({"results": "some results"}),
}],
}],
};
let bytes = serde_json::to_vec(&body).unwrap();
@@ -1251,17 +1399,24 @@ mod tests {
assert_eq!(contents.len(), 3, "should have 3 turns: user + fc + fr");
assert_eq!(contents[0]["role"].as_str().unwrap(), "user");
assert!(contents[0]["parts"][0]["text"].as_str().unwrap().contains("hello"));
assert!(contents[0]["parts"][0]["text"]
.as_str()
.unwrap()
.contains("hello"));
assert_eq!(contents[1]["role"].as_str().unwrap(), "model");
assert_eq!(
contents[1]["parts"][0]["functionCall"]["name"].as_str().unwrap(),
contents[1]["parts"][0]["functionCall"]["name"]
.as_str()
.unwrap(),
"web_search"
);
assert_eq!(contents[2]["role"].as_str().unwrap(), "user");
assert_eq!(
contents[2]["parts"][0]["functionResponse"]["name"].as_str().unwrap(),
contents[2]["parts"][0]["functionResponse"]["name"]
.as_str()
.unwrap(),
"web_search"
);
}
@@ -1369,7 +1524,8 @@ impl ResponseRewriter {
if let Ok(mut json) = serde_json::from_str::<serde_json::Value>(json_str) {
if rewrite_function_calls_in_response(&mut json) {
if let Ok(new_json) = serde_json::to_string(&json) {
let rewritten = format!("{}data: {}\n", &line[..data_start], new_json);
let rewritten =
format!("{}data: {}\n", &line[..data_start], new_json);
info!("MITM: rewrote functionCall in response → text placeholder for LS (buffered)");
output.push_str(&rewritten);
continue;
@@ -1404,7 +1560,8 @@ impl ResponseRewriter {
if let Ok(mut json) = serde_json::from_str::<serde_json::Value>(json_str) {
if rewrite_function_calls_in_response(&mut json) {
if let Ok(new_json) = serde_json::to_string(&json) {
let rewritten = format!("{}data: {}", &remaining[..data_start], new_json);
let rewritten =
format!("{}data: {}", &remaining[..data_start], new_json);
info!("MITM: rewrote functionCall in flush → text placeholder for LS");
return rewritten.into_bytes();
}
@@ -1415,4 +1572,3 @@ impl ResponseRewriter {
remaining.into_bytes()
}
}

2
src/mitm/proto.rs
View File

@@ -264,8 +264,6 @@ fn looks_like_valid_message(fields: &[ProtoField], original_len: usize) -> bool
}
}
/// Search a decoded protobuf message tree for usage-like structures.
///
/// Uses the exact field numbers from the reverse-engineered ModelUsageStats schema:

78
src/mitm/proxy.rs
View File

@@ -503,12 +503,17 @@ async fn handle_http_over_tls(
let tool_ctx = if let Some(ctx) = request_ctx.take() {
// Turn 0: cache context for subsequent turns
if let Some(ref cid) = effective_cascade {
store.cache_cascade(cid, super::store::CascadeCache {
user_text: ctx.pending_user_text.clone(),
tools: ctx.tools.clone(),
tool_config: ctx.tool_config.clone(),
generation_params: ctx.generation_params.clone(),
}).await;
store
.cache_cascade(
cid,
super::store::CascadeCache {
user_text: ctx.pending_user_text.clone(),
tools: ctx.tools.clone(),
tool_config: ctx.tool_config.clone(),
generation_params: ctx.generation_params.clone(),
},
)
.await;
}
Some(super::modify::ToolContext {
pending_user_text: ctx.pending_user_text,
@@ -654,7 +659,8 @@ async fn handle_http_over_tls(
is_streaming_response = true;
// Lazily initialize the response rewriter for SSE streams
if modify_requests {
response_rewriter = Some(super::modify::ResponseRewriter::new());
response_rewriter =
Some(super::modify::ResponseRewriter::new());
}
}
}
@@ -692,7 +698,7 @@ async fn handle_http_over_tls(
headers_parsed = true;
// Capture upstream errors for forwarding to client
let http_status = resp.code.unwrap_or(0) as u16;
let http_status = resp.code.unwrap_or(0);
if http_status >= 400 {
let body_str = String::from_utf8_lossy(&header_buf[hdr_end..]).to_string();
warn!(domain, status = http_status, body = %body_str, "MITM: upstream error response");
@@ -723,7 +729,9 @@ async fn handle_http_over_tls(
};
// Send through channel if available
if let Some(ref tx) = event_tx {
let _ = tx.send(super::store::MitmEvent::UpstreamError(upstream_err)).await;
let _ = tx
.send(super::store::MitmEvent::UpstreamError(upstream_err))
.await;
} else {
warn!("MITM: upstream error but no channel to forward it");
}
@@ -736,7 +744,13 @@ async fn handle_http_over_tls(
if is_streaming_response && hdr_end < header_buf.len() {
let body = String::from_utf8_lossy(&header_buf[hdr_end..]);
parse_streaming_chunk(&body, &mut streaming_acc);
dispatch_stream_events(&mut streaming_acc, &event_tx, &store, cascade_hint.as_deref()).await;
dispatch_stream_events(
&mut streaming_acc,
&event_tx,
&store,
cascade_hint.as_deref(),
)
.await;
}
// Forward to client — rewrite function calls if custom tools are injected
@@ -771,7 +785,13 @@ async fn handle_http_over_tls(
if is_streaming_response {
let s = String::from_utf8_lossy(chunk);
parse_streaming_chunk(&s, &mut streaming_acc);
dispatch_stream_events(&mut streaming_acc, &event_tx, &store, cascade_hint.as_deref()).await;
dispatch_stream_events(
&mut streaming_acc,
&event_tx,
&store,
cascade_hint.as_deref(),
)
.await;
}
// Forward chunk to client (LS) — rewrite function calls if custom tools
@@ -788,7 +808,6 @@ async fn handle_http_over_tls(
}
response_body_buf.extend_from_slice(chunk);
if let Some(cl) = response_content_length {
if response_body_buf.len() >= cl {
break;
@@ -934,7 +953,10 @@ async fn resolve_upstream(domain: &str) -> String {
.await
{
let out = String::from_utf8_lossy(&output.stdout);
if let Some(ip) = out.lines().find(|l| l.parse::<std::net::Ipv4Addr>().is_ok()) {
if let Some(ip) = out
.lines()
.find(|l| l.parse::<std::net::Ipv4Addr>().is_ok())
{
return format!("{ip}:443");
}
}
@@ -967,19 +989,31 @@ async fn dispatch_stream_events(
if let Some(ref tx) = event_tx {
if !acc.function_calls.is_empty() {
let calls: Vec<_> = acc.function_calls.drain(..).collect();
store.record_function_call(cascade_hint, calls[0].clone()).await;
store
.record_function_call(cascade_hint, calls[0].clone())
.await;
info!("MITM: sending {} function call(s) via channel", calls.len());
let _ = tx.send(super::store::MitmEvent::FunctionCall(calls)).await;
}
if !acc.thinking_text.is_empty() {
let _ = tx.send(super::store::MitmEvent::ThinkingDelta(acc.thinking_text.clone())).await;
let _ = tx
.send(super::store::MitmEvent::ThinkingDelta(
acc.thinking_text.clone(),
))
.await;
}
if !acc.response_text.is_empty() {
let _ = tx.send(super::store::MitmEvent::TextDelta(acc.response_text.clone())).await;
let _ = tx
.send(super::store::MitmEvent::TextDelta(
acc.response_text.clone(),
))
.await;
}
if let Some(ref gm) = acc.grounding_metadata {
store.set_grounding(gm.clone()).await;
let _ = tx.send(super::store::MitmEvent::Grounding(gm.clone())).await;
let _ = tx
.send(super::store::MitmEvent::Grounding(gm.clone()))
.await;
}
if acc.is_complete {
// Send usage BEFORE ResponseComplete so handlers have it when processing completion
@@ -995,7 +1029,11 @@ async fn dispatch_stream_events(
response_output_tokens: 0,
model: acc.model.clone(),
stop_reason: acc.stop_reason.clone(),
api_provider: acc.api_provider.clone().unwrap_or_else(|| "unknown".to_string()).into(),
api_provider: acc
.api_provider
.clone()
.unwrap_or_else(|| "unknown".to_string())
.into(),
grpc_method: None,
captured_at: std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
@@ -1003,7 +1041,9 @@ async fn dispatch_stream_events(
.as_secs(),
thinking_signature: acc.thinking_signature.clone(),
};
let _ = tx.send(super::store::MitmEvent::Usage(usage_snapshot)).await;
let _ = tx
.send(super::store::MitmEvent::Usage(usage_snapshot))
.await;
}
info!(
response_text_len = acc.response_text.len(),

35
src/mitm/store.rs
View File

@@ -336,8 +336,6 @@ impl MitmStore {
}
}
/// Update a request context in-place. Returns false if not found.
pub async fn update_request<F>(&self, cascade_id: &str, updater: F) -> bool
where
@@ -354,13 +352,17 @@ impl MitmStore {
/// Remove a request context (cleanup after response is complete).
pub async fn remove_request(&self, cascade_id: &str) {
if self.pending_requests.write().await.remove(cascade_id).is_some() {
if self
.pending_requests
.write()
.await
.remove(cascade_id)
.is_some()
{
debug!(cascade = %cascade_id, "Removed request context");
}
}
// ── Cascade cache (turn 0 context for re-injection on turn 1+) ──────
/// Cache the essential context from turn 0 so it can be re-used on
@@ -369,7 +371,10 @@ impl MitmStore {
debug!(cascade = %cascade_id, user_text_len = cache.user_text.len(),
has_tools = cache.tools.is_some(),
"Cached cascade context for subsequent turns");
self.cascade_cache.write().await.insert(cascade_id.to_string(), cache);
self.cascade_cache
.write()
.await
.insert(cascade_id.to_string(), cache);
}
/// Get cached context for a cascade (non-consuming — needed on every turn).
@@ -382,8 +387,6 @@ impl MitmStore {
self.cascade_cache.read().await.contains_key(cascade_id)
}
// ── Usage recording ──────────────────────────────────────────────────
/// Record a completed API exchange with usage data.
@@ -596,9 +599,11 @@ impl MitmStore {
/// consumes the context via `take_request`, but the handler needs to re-install
/// a channel for the LS's follow-up request.
pub async fn set_channel(&self, cascade_id: &str, tx: mpsc::Sender<MitmEvent>) {
let updated = self.update_request(cascade_id, |ctx| {
ctx.event_channel = tx.clone();
}).await;
let updated = self
.update_request(cascade_id, |ctx| {
ctx.event_channel = tx.clone();
})
.await;
if !updated {
// Context was already consumed — re-register a minimal one
// so the MITM proxy can match the follow-up request.
@@ -619,7 +624,8 @@ impl MitmStore {
gate,
trace_handle: None,
trace_turn: 0,
}).await;
})
.await;
tracing::debug!(
cascade = cascade_id,
"set_channel: re-registered minimal context (original was consumed)"
@@ -644,8 +650,7 @@ impl MitmStore {
pub async fn register_call_id(&self, cascade_id: &str, call_id: String, name: String) {
self.update_request(cascade_id, |ctx| {
ctx.call_id_to_name.insert(call_id, name);
}).await;
})
.await;
}
}

36
src/platform.rs
View File

@@ -52,10 +52,10 @@ impl Platform {
let home = home_dir();
let config_dir = env_or("ZEROGRAVITY_CONFIG_DIR", || default_config_dir(&home));
let ls_binary_path = env_or("ZEROGRAVITY_LS_PATH", || default_ls_binary_path());
let app_root = env_or("ZEROGRAVITY_APP_ROOT", || default_app_root());
let data_dir = env_or("ZEROGRAVITY_DATA_DIR", || default_data_dir());
let ca_cert_path = env_or("SSL_CERT_FILE", || default_ca_cert_path());
let ls_binary_path = env_or("ZEROGRAVITY_LS_PATH", default_ls_binary_path);
let app_root = env_or("ZEROGRAVITY_APP_ROOT", default_app_root);
let data_dir = env_or("ZEROGRAVITY_DATA_DIR", default_data_dir);
let ca_cert_path = env_or("SSL_CERT_FILE", default_ca_cert_path);
let ls_user = env_or("ZEROGRAVITY_LS_USER", || "zerogravity-ls".into());
let state_db_path = env_or("ZEROGRAVITY_STATE_DB", || default_state_db_path(&home));
let dns_redirect_so_path = format!("{}/dns-redirect.so", &data_dir);
@@ -120,7 +120,8 @@ fn default_ls_binary_path() -> String {
#[cfg(target_os = "windows")]
fn default_ls_binary_path() -> String {
let local = std::env::var("LOCALAPPDATA").unwrap_or_else(|_| "C:\\Users\\Default\\AppData\\Local".into());
let local = std::env::var("LOCALAPPDATA")
.unwrap_or_else(|_| "C:\\Users\\Default\\AppData\\Local".into());
format!("{local}\\Programs\\Antigravity\\resources\\app\\extensions\\antigravity\\bin\\language_server_windows_x64.exe")
}
@@ -143,7 +144,8 @@ fn default_app_root() -> String {
#[cfg(target_os = "windows")]
fn default_app_root() -> String {
let local = std::env::var("LOCALAPPDATA").unwrap_or_else(|_| "C:\\Users\\Default\\AppData\\Local".into());
let local = std::env::var("LOCALAPPDATA")
.unwrap_or_else(|_| "C:\\Users\\Default\\AppData\\Local".into());
format!("{local}\\Programs\\Antigravity\\resources\\app")
}
@@ -175,7 +177,8 @@ fn default_config_dir(home: &str) -> String {
}
#[cfg(target_os = "windows")]
{
let appdata = std::env::var("APPDATA").unwrap_or_else(|_| format!("{home}\\AppData\\Roaming"));
let appdata =
std::env::var("APPDATA").unwrap_or_else(|_| format!("{home}\\AppData\\Roaming"));
format!("{appdata}\\zerogravity")
}
#[cfg(not(any(target_os = "macos", target_os = "windows")))]
@@ -221,7 +224,8 @@ fn default_state_db_path(home: &str) -> String {
}
#[cfg(target_os = "windows")]
{
let appdata = std::env::var("APPDATA").unwrap_or_else(|_| format!("{home}\\AppData\\Roaming"));
let appdata =
std::env::var("APPDATA").unwrap_or_else(|_| format!("{home}\\AppData\\Roaming"));
format!("{appdata}\\Antigravity\\User\\globalStorage\\state.vscdb")
}
#[cfg(not(any(target_os = "macos", target_os = "windows")))]
@@ -234,13 +238,21 @@ fn default_state_db_path(home: &str) -> String {
fn default_os_name() -> &'static str {
#[cfg(target_os = "linux")]
{ "Linux" }
{
"Linux"
}
#[cfg(target_os = "macos")]
{ "macOS" }
{
"macOS"
}
#[cfg(target_os = "windows")]
{ "Windows" }
{
"Windows"
}
#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
{ "Unknown" }
{
"Unknown"
}
}
// ── Platform queries ──

2
src/proto/mod.rs
View File

@@ -11,8 +11,6 @@
pub mod wire;
use crate::constants::{client_version, CLIENT_NAME};
// ─── Wire primitives ────────────────────────────────────────────────────────

5
src/proto/wire.rs
View File

@@ -26,8 +26,6 @@ pub fn decode_varint(buf: &[u8]) -> Option<(u64, usize)> {
None
}
/// Encode a varint into an existing buffer.
pub fn encode_varint(buf: &mut Vec<u8>, mut val: u64) {
loop {
@@ -119,9 +117,6 @@ mod tests {
assert_eq!(decode_varint(&[0xAC, 0x02]), Some((300, 2)));
}
#[test]
fn test_encode_decode_roundtrip() {
for val in [0u64, 1, 127, 128, 300, 1026, u32::MAX as u64, u64::MAX] {

4
src/session.rs
View File

@@ -22,8 +22,6 @@ pub struct SessionManager {
sessions: RwLock<HashMap<String, Session>>,
}
impl SessionManager {
pub fn new() -> Self {
Self {
@@ -31,8 +29,6 @@ impl SessionManager {
}
}
/// List all active sessions.
pub async fn list_sessions(&self) -> serde_json::Value {
let mut sessions = self.sessions.write().await;

23
src/standalone/discovery.rs
View File

@@ -176,7 +176,14 @@ pub(super) fn cleanup_orphaned_ls() {
// and the sudoers rule allows ALL commands as antigravity-ls.
for pid in &pids {
let ok = Command::new("sudo")
.args(["-n", "-u", ls_user.as_str(), "kill", "-TERM", &pid.to_string()])
.args([
"-n",
"-u",
ls_user.as_str(),
"kill",
"-TERM",
&pid.to_string(),
])
.stdout(Stdio::null())
.stderr(Stdio::null())
.status()
@@ -209,7 +216,14 @@ pub(super) fn cleanup_orphaned_ls() {
info!("Orphaned LS still alive, force killing");
for pid in &pids {
let _ = Command::new("sudo")
.args(["-n", "-u", ls_user.as_str(), "kill", "-KILL", &pid.to_string()])
.args([
"-n",
"-u",
ls_user.as_str(),
"kill",
"-KILL",
&pid.to_string(),
])
.stdout(Stdio::null())
.stderr(Stdio::null())
.status();
@@ -225,7 +239,10 @@ pub(super) fn cleanup_orphaned_ls() {
if still_alive {
eprintln!("\n \x1b[1;31m⚠ Cannot kill orphaned LS process\x1b[0m");
eprintln!(" Run: \x1b[1msudo pkill -u {} -f language_server\x1b[0m\n", ls_user);
eprintln!(
" Run: \x1b[1msudo pkill -u {} -f language_server\x1b[0m\n",
ls_user
);
}
} else {
info!("Orphaned LS processes cleaned up");

27
src/standalone/spawn.rs
View File

@@ -1,10 +1,12 @@
//! StandaloneLS — process lifecycle (spawn, wait, kill).
use super::discovery::{cleanup_orphaned_ls, find_free_port, find_ls_pid_for_user, read_oauth_from_state_db};
use super::discovery::{
cleanup_orphaned_ls, find_free_port, find_ls_pid_for_user, read_oauth_from_state_db,
};
use super::stub::stub_handle_connection;
use super::{build_dns_redirect_so, paths, MainLSConfig, StandaloneMitmConfig};
use crate::platform;
use crate::constants;
use crate::platform;
use crate::proto;
use std::io::Write;
use std::net::TcpListener;
@@ -245,8 +247,7 @@ impl StandaloneLS {
// Write to /tmp — accessible by zerogravity-ls user
// (user's ~/.config/ is not traversable by other UIDs)
let combined_ca_path = format!("{}/mitm-ca.pem", data_dir);
let system_ca =
std::fs::read_to_string(&p.ca_cert_path).unwrap_or_default();
let system_ca = std::fs::read_to_string(&p.ca_cert_path).unwrap_or_default();
let mitm_ca = std::fs::read_to_string(&mitm.ca_cert_path)
.map_err(|e| format!("Failed to read MITM CA cert: {e}"))?;
std::fs::write(&combined_ca_path, format!("{system_ca}\n{mitm_ca}"))
@@ -431,7 +432,14 @@ impl StandaloneLS {
info!(pid, "Killing LS process via sudo -u {}", ls_user);
// Run kill AS the zerogravity-ls user (same UID can signal)
let ok = std::process::Command::new("sudo")
.args(["-n", "-u", ls_user.as_str(), "kill", "-TERM", &pid.to_string()])
.args([
"-n",
"-u",
ls_user.as_str(),
"kill",
"-TERM",
&pid.to_string(),
])
.stdout(Stdio::null())
.stderr(Stdio::null())
.status()
@@ -442,7 +450,14 @@ impl StandaloneLS {
std::thread::sleep(std::time::Duration::from_millis(500));
// Force kill if still alive
let _ = std::process::Command::new("sudo")
.args(["-n", "-u", ls_user.as_str(), "kill", "-KILL", &pid.to_string()])
.args([
"-n",
"-u",
ls_user.as_str(),
"kill",
"-KILL",
&pid.to_string(),
])
.stdout(Stdio::null())
.stderr(Stdio::null())
.status();

11
src/standalone/stub.rs
View File

@@ -89,11 +89,7 @@ fn handle_subscribe_stream(
) {
// Parse the request body to extract the topic name.
// Connect envelope: [flag(1)] [len(4)] [proto(N)]
let proto_body = if body.len() > 5 {
&body[5..]
} else {
&body[..]
};
let proto_body = if body.len() > 5 { &body[5..] } else { body };
// SubscribeToUnifiedStateSyncTopicRequest { string topic = 1; }
let mut topic_name = String::new();
@@ -150,12 +146,11 @@ fn handle_subscribe_stream(
let initial_env = make_envelope(&initial_proto);
let header = format!(
"HTTP/1.1 200 OK\r\n\
let header = "HTTP/1.1 200 OK\r\n\
Content-Type: application/connect+proto\r\n\
Transfer-Encoding: chunked\r\n\
\r\n"
);
.to_string();
if writer.write_all(header.as_bytes()).is_err() {
return;
}

96
src/trace.rs
View File

@@ -33,7 +33,13 @@ impl TraceCollector {
}
/// Start a new trace for an API call. Returns `None` if tracing is disabled.
pub fn start(&self, cascade_id: &str, endpoint: &str, model: &str, stream: bool) -> Option<TraceHandle> {
pub fn start(
&self,
cascade_id: &str,
endpoint: &str,
model: &str,
stream: bool,
) -> Option<TraceHandle> {
if !self.enabled {
return None;
}
@@ -205,34 +211,46 @@ impl TraceHandle {
let date_str = self.started_at_chrono.format("%Y-%m-%d").to_string();
let time_str = self.started_at_chrono.format("%H-%M-%S%.3f").to_string();
let cascade_short = &data.cascade_id[..8.min(data.cascade_id.len())];
let dir = self.traces_dir.join(&date_str).join(format!("{}_{}", time_str, cascade_short));
let dir = self
.traces_dir
.join(&date_str)
.join(format!("{}_{}", time_str, cascade_short));
// Build all file contents while holding lock
let summary = generate_summary(&data);
let request_json = serde_json::to_string_pretty(&data.client_request).unwrap_or_default();
let turns_json = serde_json::to_string_pretty(&data.turns).unwrap_or_default();
let response_json = if data.usage.is_some() || data.turns.iter().any(|t| t.response.is_some()) {
let resp = ResponseFile {
usage: data.usage.clone(),
let response_json =
if data.usage.is_some() || data.turns.iter().any(|t| t.response.is_some()) {
let resp = ResponseFile {
usage: data.usage.clone(),
};
Some(serde_json::to_string_pretty(&resp).unwrap_or_default())
} else {
None
};
Some(serde_json::to_string_pretty(&resp).unwrap_or_default())
} else {
None
};
let events_json = {
let all_events: Vec<_> = data.turns.iter()
let all_events: Vec<_> = data
.turns
.iter()
.enumerate()
.filter(|(_, t)| !t.events_sent.is_empty())
.map(|(i, t)| serde_json::json!({ "turn": i, "events": t.events_sent }))
.collect();
if all_events.is_empty() { None }
else { Some(serde_json::to_string_pretty(&all_events).unwrap_or_default()) }
if all_events.is_empty() {
None
} else {
Some(serde_json::to_string_pretty(&all_events).unwrap_or_default())
}
};
let errors_json = if data.errors.is_empty() { None }
else { Some(serde_json::to_string_pretty(&data.errors).unwrap_or_default()) };
let errors_json = if data.errors.is_empty() {
None
} else {
Some(serde_json::to_string_pretty(&data.errors).unwrap_or_default())
};
// Build meta.txt for grep
let meta_txt = format!(
@@ -281,7 +299,10 @@ fn generate_summary(data: &TraceData) -> String {
let cascade_short = &data.cascade_id[..8.min(data.cascade_id.len())];
// Header
s.push_str(&format!("# Trace: {} — {}\n\n", cascade_short, data.endpoint));
s.push_str(&format!(
"# Trace: {} — {}\n\n",
cascade_short, data.endpoint
));
// Overview table
s.push_str("| Field | Value |\n|-------|-------|\n");
@@ -299,13 +320,24 @@ fn generate_summary(data: &TraceData) -> String {
// Client request
s.push_str("## Client Request\n\n");
if let Some(ref req) = data.client_request {
s.push_str(&format!("- **Messages:** {} (user text: {} chars)\n", req.message_count, req.user_text_len));
s.push_str(&format!(
"- **Messages:** {} (user text: {} chars)\n",
req.message_count, req.user_text_len
));
if !req.user_text_preview.is_empty() {
s.push_str(&format!("- **Preview:** `{}`\n", req.user_text_preview));
}
s.push_str(&format!("- **Tools:** {} | **Tool rounds:** {}\n", req.tool_count, req.tool_round_count));
if req.system_prompt { s.push_str("- **System prompt:** yes\n"); }
s.push_str(&format!("- **Image:** {}\n", if req.has_image { "yes" } else { "no" }));
s.push_str(&format!(
"- **Tools:** {} | **Tool rounds:** {}\n",
req.tool_count, req.tool_round_count
));
if req.system_prompt {
s.push_str("- **System prompt:** yes\n");
}
s.push_str(&format!(
"- **Image:** {}\n",
if req.has_image { "yes" } else { "no" }
));
} else {
s.push_str("(not recorded)\n");
}
@@ -318,8 +350,10 @@ fn generate_summary(data: &TraceData) -> String {
// MITM match
if turn.mitm_matched {
s.push_str(&format!("- **MITM matched:** ✓ (gate wait: {}ms)\n",
turn.gate_wait_ms.unwrap_or(0)));
s.push_str(&format!(
"- **MITM matched:** ✓ (gate wait: {}ms)\n",
turn.gate_wait_ms.unwrap_or(0)
));
} else {
s.push_str("- **MITM matched:** ✗\n");
}
@@ -340,13 +374,19 @@ fn generate_summary(data: &TraceData) -> String {
// Response
if let Some(ref resp) = turn.response {
s.push_str(&format!("- **Response:** {} chars text, {} chars thinking",
resp.text_len, resp.thinking_len));
s.push_str(&format!(
"- **Response:** {} chars text, {} chars thinking",
resp.text_len, resp.thinking_len
));
if let Some(ref fr) = resp.finish_reason {
s.push_str(&format!(", finish_reason={}", fr));
}
if !resp.function_calls.is_empty() {
let names: Vec<&str> = resp.function_calls.iter().map(|f| f.name.as_str()).collect();
let names: Vec<&str> = resp
.function_calls
.iter()
.map(|f| f.name.as_str())
.collect();
s.push_str(&format!(", tool_calls=[{}]", names.join(", ")));
}
if resp.grounding {
@@ -360,9 +400,11 @@ fn generate_summary(data: &TraceData) -> String {
// Events
if !turn.events_sent.is_empty() {
s.push_str(&format!("- **Events:** {} sent ({})\n",
s.push_str(&format!(
"- **Events:** {} sent ({})\n",
turn.events_sent.len(),
turn.events_sent.join(", ")));
turn.events_sent.join(", ")
));
}
// Handler action
@@ -380,7 +422,7 @@ fn generate_summary(data: &TraceData) -> String {
// Usage
if let Some(ref u) = data.usage {
s.push_str("## Usage\n\n");
s.push_str(&format!("| Metric | Tokens |\n|--------|--------|\n"));
s.push_str("| Metric | Tokens |\n|--------|--------|\n");
s.push_str(&format!("| Input | {} |\n", u.input_tokens));
s.push_str(&format!("| Output | {} |\n", u.output_tokens));
if u.thinking_tokens > 0 {