Files
clawmates/crates/tc-runtime/tests/shell_exec.rs
T
Omar SobhandClaude Fable 5 7392ce1d08 P6: shell.exec — agents execute code in their real hardened sandbox
- SandboxManager (tc-runtime): one container per agent, provisioned
  lazily on first use, reused for the manager's lifetime, replaced
  transparently if dead, destroyed on shutdown
- shell.exec tool: sh -lc inside the agent's sandbox; stdout/stderr/
  exit_code return to the model as the step output. No external effects
  declared — the sandbox boundary (uid 10001, no caps, seccomp
  allowlist, read-only rootfs, zero egress) is the §15 control here,
  not an approval gate
- RuntimeConfig.sandboxes (+ with_sandboxes builder); [sandbox] config
  {image, enabled}; the server connects the Docker driver at boot and
  tolerates an absent engine (shell.exec reports it per-call)
- Tests with the REAL DockerDriver: a scripted run executes two
  commands — output proves uid 10001 from inside, and /home/agent state
  written by the first call is read by the second (same sandbox); a
  deployment without a sandbox runtime records honest error steps and
  the run still completes

151 Rust tests + 27 Playwright journeys.

Co-Authored-By: Claude Fable 5 <[email protected]>
2026-06-10 09:25:38 -05:00

228 lines
7.1 KiB
Rust

//! Agents execute code in their REAL hardened sandbox: shell.exec runs in
//! a per-agent container (Docker driver), output returns to the model as a
//! step result, and /home/agent state persists across calls in a run.
use std::process::Command;
use std::sync::Arc;
use tc_domain::{
AccessPolicy, Agent, AgentId, AgentStatus, Role, RunState, User, UserId, Workspace, WorkspaceId,
};
use tc_llm::ScriptedProvider;
use tc_runtime::{Runtime, RuntimeConfig, SandboxManager};
use tc_sandbox::DockerDriver;
const IMAGE: &str = "teamclaw/agent-base:dev";
const SCENARIOS: &str = r#"
[[scenario]]
marker = "[[scenario:shell]]"
[[scenario.turns]]
events = [
{ type = "tool_use", name = "shell.exec", input = { command = "id -u && echo tick > /home/agent/state" } },
]
[[scenario.turns]]
events = [
{ type = "tool_use", name = "shell.exec", input = { command = "cat /home/agent/state" } },
]
[[scenario.turns]]
events = [
{ type = "text", text = "Ran both commands." },
]
"#;
fn ensure_image() {
let exists = Command::new("docker")
.args(["image", "inspect", IMAGE])
.output()
.expect("docker available")
.status
.success();
if !exists {
let root = env!("CARGO_MANIFEST_DIR");
let status = Command::new("docker")
.args([
"build",
"-t",
IMAGE,
"-f",
&format!("{root}/../../images/agent-base/Dockerfile"),
&format!("{root}/../../images/agent-base"),
])
.status()
.expect("docker build runs");
assert!(status.success(), "agent-base image build failed");
}
}
#[tokio::test]
async fn shell_exec_runs_in_the_agent_sandbox_with_persistent_home() {
ensure_image();
let pool = tc_testkit::test_pool().await;
let ws = Workspace {
id: WorkspaceId::new(),
name: "Acme".into(),
plan: "team".into(),
};
tc_db::repo::workspaces::insert(&pool, &ws).await.unwrap();
let owner = User {
id: UserId::new(),
workspace_id: ws.id,
email: format!("{}@acme.test", UserId::new()),
role: Role::Owner,
display_name: "Owner".into(),
created_at: time::OffsetDateTime::UNIX_EPOCH,
};
tc_db::repo::users::insert(&pool, &owner).await.unwrap();
let agent = Agent {
id: AgentId::new(),
workspace_id: ws.id,
name: "Scout".into(),
job_title: "Analyst".into(),
system_prompt: String::new(),
avatar: String::new(),
accent: String::new(),
wallpaper: String::new(),
managed_by: owner.id,
status: AgentStatus::Online,
};
tc_db::repo::agents::insert(&pool, &agent, &AccessPolicy::default())
.await
.unwrap();
let driver = DockerDriver::connect().expect("docker reachable");
let sandboxes = Arc::new(SandboxManager::new(Arc::new(driver), IMAGE));
let rt = Runtime::new(
pool.clone(),
Arc::new(ScriptedProvider::from_toml(SCENARIOS).unwrap()),
RuntimeConfig::basic("scripted", 1024).with_sandboxes(sandboxes.clone()),
);
let session = tc_db::repo::sessions::create(&pool, agent.id, ws.id, "Shell")
.await
.unwrap();
let started = rt
.send_message(session.id, "run it [[scenario:shell]]")
.await
.unwrap();
let mut rx = started.events;
while let Ok(envelope) = rx.recv().await {
if matches!(
envelope.event,
tc_runtime::RunEventBody::RunCompleted { .. } | tc_runtime::RunEventBody::Error { .. }
) {
break;
}
}
let run = tc_db::repo::runs::get(&pool, started.run_id).await.unwrap();
assert_eq!(run.state, RunState::Completed);
// Step outputs prove kernel-level facts: uid 10001 inside, and the
// second call saw the first call's file — same sandbox, same run.
let outputs: Vec<serde_json::Value> = sqlx::query_scalar(
"SELECT s.output FROM steps s
JOIN messages m ON m.id = s.message_id
WHERE m.session_id = $1 AND s.tool_name = 'shell.exec'
ORDER BY s.seq",
)
.bind(session.id.as_uuid())
.fetch_all(&pool)
.await
.unwrap();
assert_eq!(outputs.len(), 2);
assert_eq!(outputs[0]["exit_code"], 0, "first: {}", outputs[0]);
assert!(
outputs[0]["stdout"].as_str().unwrap().contains("10001"),
"sandbox runs as uid 10001: {}",
outputs[0]
);
assert_eq!(outputs[1]["exit_code"], 0, "second: {}", outputs[1]);
assert!(
outputs[1]["stdout"].as_str().unwrap().contains("tick"),
"home persists across execs: {}",
outputs[1]
);
sandboxes.shutdown().await;
}
#[tokio::test]
async fn shell_exec_without_a_sandbox_runtime_reports_a_tool_error() {
let pool = tc_testkit::test_pool().await;
let ws = Workspace {
id: WorkspaceId::new(),
name: "Acme".into(),
plan: "team".into(),
};
tc_db::repo::workspaces::insert(&pool, &ws).await.unwrap();
let owner = User {
id: UserId::new(),
workspace_id: ws.id,
email: format!("{}@acme.test", UserId::new()),
role: Role::Owner,
display_name: "Owner".into(),
created_at: time::OffsetDateTime::UNIX_EPOCH,
};
tc_db::repo::users::insert(&pool, &owner).await.unwrap();
let agent = Agent {
id: AgentId::new(),
workspace_id: ws.id,
name: "Scout".into(),
job_title: "Analyst".into(),
system_prompt: String::new(),
avatar: String::new(),
accent: String::new(),
wallpaper: String::new(),
managed_by: owner.id,
status: AgentStatus::Online,
};
tc_db::repo::agents::insert(&pool, &agent, &AccessPolicy::default())
.await
.unwrap();
let rt = Runtime::new(
pool.clone(),
Arc::new(ScriptedProvider::from_toml(SCENARIOS).unwrap()),
RuntimeConfig::basic("scripted", 1024),
);
let session = tc_db::repo::sessions::create(&pool, agent.id, ws.id, "NoBox")
.await
.unwrap();
let started = rt
.send_message(session.id, "run it [[scenario:shell]]")
.await
.unwrap();
let mut rx = started.events;
while let Ok(envelope) = rx.recv().await {
if matches!(
envelope.event,
tc_runtime::RunEventBody::RunCompleted { .. } | tc_runtime::RunEventBody::Error { .. }
) {
break;
}
}
// The run survives: the tool reports its error to the model, which
// finishes the scenario.
let run = tc_db::repo::runs::get(&pool, started.run_id).await.unwrap();
assert_eq!(run.state, RunState::Completed);
let statuses: Vec<String> = sqlx::query_scalar(
"SELECT s.status FROM steps s
JOIN messages m ON m.id = s.message_id
WHERE m.session_id = $1 AND s.tool_name = 'shell.exec'
ORDER BY s.seq",
)
.bind(session.id.as_uuid())
.fetch_all(&pool)
.await
.unwrap();
assert!(!statuses.is_empty());
assert!(
statuses.iter().all(|s| s == "error"),
"steps must record the failure: {statuses:?}"
);
}