This commit is contained in:
@@ -22,21 +22,10 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
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zlib1g \
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&& rm -rf /var/lib/apt/lists/*
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# Herald drives the container daemon through its socket (DOCKER_HOST, default
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# unix:///var/run/docker.sock), so neither docker nor podman is needed here: the
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# compose file mounts the socket. Reaching that socket is what this user needs,
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# and the socket is root-equivalent, so either run the container as root or give
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# it the socket's group, e.g. `group_add: ["<gid of the host docker group>"]`.
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RUN useradd --create-home --shell /usr/sbin/nologin --uid 10001 herald
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WORKDIR /app
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COPY --from=builder /app/target/release/herald-server ./herald-server
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# git looks for its configuration under $HOME.
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ENV HOME=/home/herald
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USER herald
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# Exec form, so the binary is PID 1 and receives the SIGTERM it handles to shut
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# down gracefully.
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CMD ["./herald-server"]
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@@ -61,6 +61,18 @@ Herald drives the container daemon through its socket: `DOCKER_HOST` (default
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Docker-compatible socket. The repository must contain a
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`.devcontainer/devcontainer.json`.
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Herald can therefore run inside a container with only that socket mounted (no
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shared workspace directory is required): the clone is streamed to the daemon over
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the socket, like the build context, instead of being bind-mounted from a host
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path the daemon would have to see. This is the setup the `Containerfile`
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produces, e.g.:
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```sh
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podman run --env-file=.env -p 3001:3001 \
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-v /run/user/$(id -u)/podman/podman.sock:/var/run/docker.sock \
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herald:latest
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```
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The `runArgs` of that file are read but deliberately **not** passed to the daemon:
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they come from an untrusted pull request, and one of them (`--network host`) would
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attach the container to another network and quietly
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@@ -112,17 +112,7 @@ impl DevContainer {
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),
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working_dir: Some(workspace_folder.clone()),
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host_config: Some(HostConfig {
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binds: Some(vec![format!(
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"{}:{workspace_folder}",
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workspace_dir.display()
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)]),
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network_mode: Some(network.clone()),
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// Le clone est monté depuis un chemin de l'hôte. Sur une distribution
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// à SELinux enforcing, ce chemin n'a pas le label attendu et l'accès
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// est refusé (EACCES), ce qui fait échouer tous les outils de la
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// sandbox. C'est le compromis inverse de l'alternative `:Z` sur le
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// montage, qui re-labellise le clone et garde le confinement SELinux.
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security_opt: Some(vec![String::from("label=disable")]),
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..Default::default()
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}),
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..Default::default()
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@@ -141,6 +131,20 @@ impl DevContainer {
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return Err(err);
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}
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// Le clone est copié dans le container par le socket, pas monté depuis un
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// chemin de l'hôte : le daemon n'a pas besoin de voir le clone pour le rendre
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// visible dans la sandbox, ce qui permet à Herald de tourner dans un container
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// (avec le socket monté) sans partager de dossier avec l'hôte.
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if let Err(err) = runtime
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.upload_directory(&name, &workspace_folder, workspace_dir)
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.await
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{
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let _ = runtime.remove_container(&name).await;
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let _ = runtime.remove_network(&network).await;
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let _ = runtime.remove_image(&image_tag).await;
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return Err(err);
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}
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let container = Container::new(
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runtime.clone(),
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name,
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@@ -1,7 +1,7 @@
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//! Primitives de cycle de vie de container pour un [`DevContainer`] analysé.
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//!
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//! Cette crate pilote l'API du daemon de containers pour construire l'image
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//! devcontainer, démarrer un container avec le workspace monté, exécuter les
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//! devcontainer, démarrer un container et y copier le workspace, exécuter les
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//! hooks `postCreateCommand` / `postStartCommand` et lancer des commandes à
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//! l'intérieur du container en cours d'exécution.
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//!
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@@ -10,7 +10,7 @@ use bollard::{
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models::{BuildInfo, ContainerCreateBody, NetworkCreateRequest, NetworkDisconnectRequest},
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query_parameters::{
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BuildImageOptions, CreateContainerOptions, RemoveContainerOptions, RemoveImageOptions,
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StartContainerOptions, StopContainerOptions,
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StartContainerOptions, StopContainerOptions, UploadToContainerOptions,
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},
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};
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use futures_util::StreamExt;
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@@ -153,6 +153,30 @@ impl ContainerRuntime {
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Ok(())
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}
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pub(crate) async fn upload_directory(
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&self,
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container: &str,
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destination: &str,
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directory: &Path,
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) -> Result<(), ContainerError> {
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let options = UploadToContainerOptions {
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path: String::from(destination),
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..Default::default()
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};
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self.request(
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"upload workspace",
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self.docker.upload_to_container(
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container,
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Some(options),
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body_try_stream(tar_directory_stream(directory)),
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),
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)
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.await?;
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Ok(())
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}
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pub(crate) async fn start_container(&self, name: &str) -> Result<(), ContainerError> {
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self.request(
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"start container",
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@@ -35,7 +35,7 @@ pub struct SandboxConfig {
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pub struct Sandbox {
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// Owns the temporary directory; dropping it cleans up the clone.
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_workspace: TempDir,
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/// Path of the clone, as bind-mounted into the container.
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/// Path of the clone, as copied into the container.
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repo_dir: PathBuf,
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container: Container,
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}
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@@ -72,17 +72,20 @@ impl Sandbox {
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container,
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};
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sandbox.check_workspace().await?;
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if let Err(err) = sandbox.check_workspace().await {
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let _ = sandbox.container.remove().await;
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return Err(err);
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}
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Ok(sandbox)
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}
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/// Vérifie que le clone est bien visible dans le container.
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///
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/// Sans ce contrôle, un montage vide — le daemon ne voit pas le clone, par
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/// exemple quand Herald est dans un container sur une autre machine — fait
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/// échouer chaque outil ; le modèle enchaîne alors les appels ratés jusqu'au
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/// budget d'itérations, sans jamais pouvoir reviewer quoi que ce soit.
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/// Sans ce contrôle, un workspace vide — par exemple un daemon qui n'a pas pu
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/// recevoir le clone — fait échouer chaque outil ; le modèle enchaîne alors les
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/// appels ratés jusqu'au budget d'itérations, sans jamais pouvoir reviewer quoi
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/// que ce soit.
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async fn check_workspace(&self) -> anyhow::Result<()> {
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let workspace_folder = self.workspace_folder();
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let probe = self
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@@ -41,6 +41,19 @@ fn review_tools() -> Vec<Tool> {
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}
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}),
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),
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Tool::new(
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"file_size",
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"Get the size of a file inside the repository in bytes.",
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json!({
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"type": "object",
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"properties": {
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"path": {
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"type": "string",
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"description": "File path relative to the repository root."
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}
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}
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}),
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),
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Tool::new(
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"read_file",
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"Read the content of a text file inside the repository. Every line is \
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@@ -111,12 +124,19 @@ pub async fn dispatch(sandbox: &Sandbox, name: &str, args: &Value) -> anyhow::Re
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match name {
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"ls" => ls(sandbox, args).await,
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"read_file" => read_file(sandbox, args).await,
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"file_size" => file_size(sandbox, args).await,
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"grep" => grep(sandbox, args).await,
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"find" => find(sandbox, args).await,
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other => bail!("unknown tool `{other}`"),
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}
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}
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async fn file_size(sandbox: &Sandbox, args: &Value) -> anyhow::Result<String> {
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let path = resolve(sandbox, required_str(args, "path")?)?;
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let size = sandbox.exec(&["du", "-b", "--", &path]).await?;
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into_stdout(size)
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}
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async fn ls(sandbox: &Sandbox, args: &Value) -> anyhow::Result<String> {
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let path = resolve(sandbox, optional_str(args, "path").unwrap_or("."))?;
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let output = sandbox.exec(&["ls", "-la", "--", &path]).await?;
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