Remove Go and C source

The Rust implementation now implements all features I need

2 files changed, 0 insertions, 1047 deletions

diff --git a/rs/server/Cargo.toml b/rs/server/Cargo.toml
deleted file mode 100644
index edb76d8..0000000
--- a/rs/server/Cargo.toml
+++ /dev/null
@@ -1,19 +0,0 @@
-[package]
-name = "server"
-version = "0.1.0"
-edition = "2021"
-
-[dependencies]
-aws-config = { version = "1.1.2" }
-aws-sdk-s3 = "1.12.0"
-axum = "0.7"
-base64 = "0.21"
-chrono = { version = "0.4", features = ["serde"] }
-common = { path = "../common" }
-mime = "0.3"
-serde = { version = "1", features = ["derive"] }
-serde_json = "1"
-tokio = { version = "1.35", features = ["full"] }
-tokio-util = "0.7"
-tower = "0.4"
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
diff --git a/rs/server/src/main.rs b/rs/server/src/main.rs
deleted file mode 100644
index 8baa0d6..0000000
--- a/rs/server/src/main.rs
+++ /dev/null
@@ -1,1028 +0,0 @@
-use std::collections::HashMap;
-use std::collections::HashSet;
-use std::process::ExitCode;
-use std::sync::Arc;
-
-use aws_sdk_s3::error::SdkError;
-use aws_sdk_s3::operation::head_object::HeadObjectOutput;
-use axum::extract::rejection;
-use axum::extract::FromRequest;
-use axum::extract::Path;
-use axum::extract::State;
-use axum::http::header;
-use axum::http::HeaderMap;
-use axum::http::HeaderValue;
-use axum::response::Response;
-use axum::Json;
-use axum::ServiceExt;
-use base64::prelude::*;
-use chrono::DateTime;
-use chrono::Utc;
-use common::HexByte;
-use serde::de;
-use serde::de::DeserializeOwned;
-use serde::Deserialize;
-use serde::Serialize;
-use tower::Layer;
-
-use axum::{
-    async_trait,
-    extract::{FromRequestParts, OriginalUri, Request},
-    http::{request::Parts, StatusCode, Uri},
-    response::IntoResponse,
-    routing::{get, post},
-    Extension, Router,
-};
-
-#[derive(Clone)]
-struct RepositoryName(String);
-
-struct RepositoryNameRejection;
-
-impl IntoResponse for RepositoryNameRejection {
-    fn into_response(self) -> Response {
-        (StatusCode::INTERNAL_SERVER_ERROR, "Missing repository name").into_response()
-    }
-}
-
-#[async_trait]
-impl<S: Send + Sync> FromRequestParts<S> for RepositoryName {
-    type Rejection = RepositoryNameRejection;
-
-    async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self, Self::Rejection> {
-        let Ok(Extension(repo_name)) = Extension::<Self>::from_request_parts(parts, state).await
-        else {
-            return Err(RepositoryNameRejection);
-        };
-        Ok(repo_name)
-    }
-}
-
-async fn rewrite_url<B>(
-    mut req: axum::http::Request<B>,
-) -> Result<axum::http::Request<B>, StatusCode> {
-    let uri = req.uri();
-    let original_uri = OriginalUri(uri.clone());
-
-    let Some(path_and_query) = uri.path_and_query() else {
-        // L @ no path & query
-        return Err(StatusCode::BAD_REQUEST);
-    };
-    let Some((repo, path)) = path_and_query.path().split_once("/info/lfs/objects") else {
-        return Err(StatusCode::NOT_FOUND);
-    };
-    let repo = repo
-        .trim_start_matches('/')
-        .trim_end_matches('/')
-        .to_string();
-    if !path.starts_with('/') || !repo.ends_with(".git") {
-        return Err(StatusCode::NOT_FOUND);
-    }
-
-    let mut parts = uri.clone().into_parts();
-    parts.path_and_query = match path_and_query.query() {
-        None => path.try_into().ok(),
-        Some(q) => format!("{path}?{q}").try_into().ok(),
-    };
-    let Ok(new_uri) = Uri::from_parts(parts) else {
-        return Err(StatusCode::INTERNAL_SERVER_ERROR);
-    };
-
-    *req.uri_mut() = new_uri;
-    req.extensions_mut().insert(original_uri);
-    req.extensions_mut().insert(RepositoryName(repo));
-
-    Ok(req)
-}
-
-struct AppState {
-    s3_client: aws_sdk_s3::Client,
-    s3_bucket: String,
-    authz_conf: AuthorizationConfig,
-    // Should not end with a slash.
-    base_url: String,
-}
-
-struct Env {
-    s3_access_key_id: String,
-    s3_secret_access_key: String,
-    s3_bucket: String,
-    s3_region: String,
-    s3_endpoint: String,
-    base_url: String,
-    key_path: String,
-    listen_host: String,
-    listen_port: String,
-    trusted_forwarded_hosts: String,
-}
-
-fn require_env(name: &str) -> Result<String, String> {
-    std::env::var(name)
-        .map_err(|_| format!("environment variable {name} should be defined and valid"))
-}
-
-impl Env {
-    fn load() -> Result<Env, String> {
-        Ok(Env {
-            s3_secret_access_key: require_env("GITOLFS3_S3_SECRET_ACCESS_KEY_FILE")?,
-            s3_access_key_id: require_env("GITOLFS3_S3_ACCESS_KEY_ID_FILE")?,
-            s3_region: require_env("GITOLFS3_S3_REGION")?,
-            s3_endpoint: require_env("GITOLFS3_S3_ENDPOINT")?,
-            s3_bucket: require_env("GITOLFS3_S3_BUCKET")?,
-            base_url: require_env("GITOLFS3_BASE_URL")?,
-            key_path: require_env("GITOLFS3_KEY_PATH")?,
-            listen_host: require_env("GITOLFS3_LISTEN_HOST")?,
-            listen_port: require_env("GITOLFS3_LISTEN_PORT")?,
-            trusted_forwarded_hosts: std::env::var("GITOLFS3_TRUSTED_FORWARDED_HOSTS")
-                .unwrap_or_default(),
-        })
-    }
-}
-
-fn get_s3_client(env: &Env) -> Result<aws_sdk_s3::Client, std::io::Error> {
-    let access_key_id = std::fs::read_to_string(&env.s3_access_key_id)?;
-    let secret_access_key = std::fs::read_to_string(&env.s3_secret_access_key)?;
-
-    let credentials = aws_sdk_s3::config::Credentials::new(
-        access_key_id,
-        secret_access_key,
-        None,
-        None,
-        "gitolfs3-env",
-    );
-    let config = aws_config::SdkConfig::builder()
-        .behavior_version(aws_config::BehaviorVersion::latest())
-        .region(aws_config::Region::new(env.s3_region.clone()))
-        .endpoint_url(&env.s3_endpoint)
-        .credentials_provider(aws_sdk_s3::config::SharedCredentialsProvider::new(
-            credentials,
-        ))
-        .build();
-    Ok(aws_sdk_s3::Client::new(&config))
-}
-
-#[tokio::main]
-async fn main() -> ExitCode {
-    tracing_subscriber::fmt::init();
-
-    let env = match Env::load() {
-        Ok(env) => env,
-        Err(e) => {
-            println!("Failed to load configuration: {e}");
-            return ExitCode::from(2);
-        }
-    };
-
-    let s3_client = match get_s3_client(&env) {
-        Ok(s3_client) => s3_client,
-        Err(e) => {
-            println!("Failed to create S3 client: {e}");
-            return ExitCode::FAILURE;
-        }
-    };
-    let key = match common::load_key(&env.key_path) {
-        Ok(key) => key,
-        Err(e) => {
-            println!("Failed to load Gitolfs3 key: {e}");
-            return ExitCode::FAILURE;
-        }
-    };
-
-    let trusted_forwarded_hosts: HashSet<String> = env
-        .trusted_forwarded_hosts
-        .split(',')
-        .map(|s| s.to_owned())
-        .filter(|s| !s.is_empty())
-        .collect();
-    let base_url = env.base_url.trim_end_matches('/').to_string();
-
-    let authz_conf = AuthorizationConfig {
-        key,
-        trusted_forwarded_hosts,
-    };
-
-    let shared_state = Arc::new(AppState {
-        s3_client,
-        s3_bucket: env.s3_bucket,
-        authz_conf,
-        base_url,
-    });
-    let app = Router::new()
-        .route("/batch", post(batch))
-        .route("/:oid0/:oid1/:oid", get(obj_download))
-        .with_state(shared_state);
-
-    let middleware = axum::middleware::map_request(rewrite_url);
-    let app_with_middleware = middleware.layer(app);
-
-    let Ok(listen_port): Result<u16, _> = env.listen_port.parse() else {
-        println!("Configured LISTEN_PORT should be an unsigned integer no higher than 65535");
-        return ExitCode::from(2);
-    };
-    let addr: (String, u16) = (env.listen_host, listen_port);
-    let listener = match tokio::net::TcpListener::bind(addr).await {
-        Ok(listener) => listener,
-        Err(e) => {
-            println!("Failed to listen: {e}");
-            return ExitCode::FAILURE;
-        }
-    };
-
-    match axum::serve(listener, app_with_middleware.into_make_service()).await {
-        Ok(_) => ExitCode::SUCCESS,
-        Err(e) => {
-            println!("Error serving: {e}");
-            ExitCode::FAILURE
-        }
-    }
-}
-
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone, Copy)]
-enum TransferAdapter {
-    #[serde(rename = "basic")]
-    Basic,
-    #[serde(other)]
-    Unknown,
-}
-
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone, Copy)]
-enum HashAlgo {
-    #[serde(rename = "sha256")]
-    Sha256,
-    #[serde(other)]
-    Unknown,
-}
-
-impl Default for HashAlgo {
-    fn default() -> Self {
-        Self::Sha256
-    }
-}
-
-#[derive(Debug, Deserialize, PartialEq, Eq, Clone)]
-struct BatchRequestObject {
-    oid: common::Oid,
-    size: i64,
-}
-
-#[derive(Debug, Serialize, Deserialize, Clone)]
-struct BatchRef {
-    name: String,
-}
-
-fn default_transfers() -> Vec<TransferAdapter> {
-    vec![TransferAdapter::Basic]
-}
-
-#[derive(Debug, Deserialize, PartialEq, Eq, Clone)]
-struct BatchRequest {
-    operation: common::Operation,
-    #[serde(default = "default_transfers")]
-    transfers: Vec<TransferAdapter>,
-    objects: Vec<BatchRequestObject>,
-    #[serde(default)]
-    hash_algo: HashAlgo,
-}
-
-#[derive(Debug, Clone)]
-struct GitLfsJson<T>(Json<T>);
-
-const LFS_MIME: &str = "application/vnd.git-lfs+json";
-
-enum GitLfsJsonRejection {
-    Json(rejection::JsonRejection),
-    MissingGitLfsJsonContentType,
-}
-
-impl IntoResponse for GitLfsJsonRejection {
-    fn into_response(self) -> Response {
-        match self {
-            Self::Json(rej) => rej.into_response(),
-            Self::MissingGitLfsJsonContentType => make_error_resp(
-                StatusCode::UNSUPPORTED_MEDIA_TYPE,
-                &format!("Expected request with `Content-Type: {LFS_MIME}`"),
-            )
-            .into_response(),
-        }
-    }
-}
-
-fn is_git_lfs_json_mimetype(mimetype: &str) -> bool {
-    let Ok(mime) = mimetype.parse::<mime::Mime>() else {
-        return false;
-    };
-    if mime.type_() != mime::APPLICATION
-        || mime.subtype() != "vnd.git-lfs"
-        || mime.suffix() != Some(mime::JSON)
-    {
-        return false;
-    }
-    match mime.get_param(mime::CHARSET) {
-        Some(mime::UTF_8) | None => true,
-        Some(_) => false,
-    }
-}
-
-fn has_git_lfs_json_content_type(req: &Request) -> bool {
-    let Some(content_type) = req.headers().get(header::CONTENT_TYPE) else {
-        return false;
-    };
-    let Ok(content_type) = content_type.to_str() else {
-        return false;
-    };
-    is_git_lfs_json_mimetype(content_type)
-}
-
-#[async_trait]
-impl<T, S> FromRequest<S> for GitLfsJson<T>
-where
-    T: DeserializeOwned,
-    S: Send + Sync,
-{
-    type Rejection = GitLfsJsonRejection;
-
-    async fn from_request(req: Request, state: &S) -> Result<Self, Self::Rejection> {
-        if !has_git_lfs_json_content_type(&req) {
-            return Err(GitLfsJsonRejection::MissingGitLfsJsonContentType);
-        }
-        Json::<T>::from_request(req, state)
-            .await
-            .map(GitLfsJson)
-            .map_err(GitLfsJsonRejection::Json)
-    }
-}
-
-impl<T: Serialize> IntoResponse for GitLfsJson<T> {
-    fn into_response(self) -> Response {
-        let GitLfsJson(json) = self;
-        let mut resp = json.into_response();
-        resp.headers_mut().insert(
-            header::CONTENT_TYPE,
-            HeaderValue::from_static("application/vnd.git-lfs+json; charset=utf-8"),
-        );
-        resp
-    }
-}
-
-#[derive(Debug, Serialize)]
-struct GitLfsErrorData<'a> {
-    message: &'a str,
-}
-
-type GitLfsErrorResponse<'a> = (StatusCode, GitLfsJson<GitLfsErrorData<'a>>);
-
-const fn make_error_resp(code: StatusCode, message: &str) -> GitLfsErrorResponse {
-    (code, GitLfsJson(Json(GitLfsErrorData { message })))
-}
-
-#[derive(Debug, Serialize, Clone)]
-struct BatchResponseObjectAction {
-    href: String,
-    #[serde(skip_serializing_if = "HashMap::is_empty")]
-    header: HashMap<String, String>,
-    expires_at: DateTime<Utc>,
-}
-
-#[derive(Default, Debug, Serialize, Clone)]
-struct BatchResponseObjectActions {
-    #[serde(skip_serializing_if = "Option::is_none")]
-    upload: Option<BatchResponseObjectAction>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    download: Option<BatchResponseObjectAction>,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    verify: Option<BatchResponseObjectAction>,
-}
-
-#[derive(Debug, Clone, Serialize)]
-struct BatchResponseObjectError {
-    code: u16,
-    message: String,
-}
-
-#[derive(Debug, Serialize, Clone)]
-struct BatchResponseObject {
-    oid: common::Oid,
-    size: i64,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    authenticated: Option<bool>,
-    actions: BatchResponseObjectActions,
-    #[serde(skip_serializing_if = "Option::is_none")]
-    error: Option<BatchResponseObjectError>,
-}
-
-impl BatchResponseObject {
-    fn error(obj: &BatchRequestObject, code: StatusCode, message: String) -> BatchResponseObject {
-        BatchResponseObject {
-            oid: obj.oid,
-            size: obj.size,
-            authenticated: None,
-            actions: Default::default(),
-            error: Some(BatchResponseObjectError {
-                code: code.as_u16(),
-                message,
-            }),
-        }
-    }
-}
-
-#[derive(Debug, Serialize, Clone)]
-struct BatchResponse {
-    transfer: TransferAdapter,
-    objects: Vec<BatchResponseObject>,
-    hash_algo: HashAlgo,
-}
-
-fn validate_checksum(oid: common::Oid, obj: &HeadObjectOutput) -> bool {
-    if let Some(checksum) = obj.checksum_sha256() {
-        if let Ok(checksum) = BASE64_STANDARD.decode(checksum) {
-            if let Ok(checksum32b) = TryInto::<[u8; 32]>::try_into(checksum) {
-                return common::Oid::from(checksum32b) == oid;
-            }
-        }
-    }
-    true
-}
-
-fn validate_size(expected: i64, obj: &HeadObjectOutput) -> bool {
-    if let Some(length) = obj.content_length() {
-        return length == expected;
-    }
-    true
-}
-
-async fn handle_upload_object(
-    state: &AppState,
-    repo: &str,
-    obj: &BatchRequestObject,
-) -> Option<BatchResponseObject> {
-    let (oid0, oid1) = (HexByte(obj.oid[0]), HexByte(obj.oid[1]));
-    let full_path = format!("{repo}/lfs/objects/{}/{}/{}", oid0, oid1, obj.oid);
-
-    match state
-        .s3_client
-        .head_object()
-        .bucket(&state.s3_bucket)
-        .key(full_path.clone())
-        .checksum_mode(aws_sdk_s3::types::ChecksumMode::Enabled)
-        .send()
-        .await
-    {
-        Ok(result) => {
-            if validate_size(obj.size, &result) && validate_checksum(obj.oid, &result) {
-                return None;
-            }
-        }
-        Err(SdkError::ServiceError(e)) if e.err().is_not_found() => {}
-        Err(e) => {
-            println!("Failed to HeadObject (repo {repo}, OID {}): {e}", obj.oid);
-            return Some(BatchResponseObject::error(
-                obj,
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to query object information".to_string(),
-            ));
-        }
-    };
-
-    let expires_in = std::time::Duration::from_secs(5 * 60);
-    let expires_at = Utc::now() + expires_in;
-
-    let Ok(config) = aws_sdk_s3::presigning::PresigningConfig::expires_in(expires_in) else {
-        return Some(BatchResponseObject::error(
-            obj,
-            StatusCode::INTERNAL_SERVER_ERROR,
-            "Failed to generate upload URL".to_string(),
-        ));
-    };
-    let Ok(presigned) = state
-        .s3_client
-        .put_object()
-        .bucket(&state.s3_bucket)
-        .key(full_path)
-        .checksum_sha256(obj.oid.to_string())
-        .content_length(obj.size)
-        .presigned(config)
-        .await
-    else {
-        return Some(BatchResponseObject::error(
-            obj,
-            StatusCode::INTERNAL_SERVER_ERROR,
-            "Failed to generate upload URL".to_string(),
-        ));
-    };
-    Some(BatchResponseObject {
-        oid: obj.oid,
-        size: obj.size,
-        authenticated: Some(true),
-        actions: BatchResponseObjectActions {
-            upload: Some(BatchResponseObjectAction {
-                header: presigned
-                    .headers()
-                    .map(|(k, v)| (k.to_owned(), v.to_owned()))
-                    .collect(),
-                expires_at,
-                href: presigned.uri().to_string(),
-            }),
-            ..Default::default()
-        },
-        error: None,
-    })
-}
-
-async fn handle_download_object(
-    state: &AppState,
-    repo: &str,
-    obj: &BatchRequestObject,
-    trusted: bool,
-) -> BatchResponseObject {
-    let (oid0, oid1) = (HexByte(obj.oid[0]), HexByte(obj.oid[1]));
-    let full_path = format!("{repo}/lfs/objects/{}/{}/{}", oid0, oid1, obj.oid);
-
-    let result = match state
-        .s3_client
-        .head_object()
-        .bucket(&state.s3_bucket)
-        .key(&full_path)
-        .checksum_mode(aws_sdk_s3::types::ChecksumMode::Enabled)
-        .send()
-        .await
-    {
-        Ok(result) => result,
-        Err(e) => {
-            println!("Failed to HeadObject (repo {repo}, OID {}): {e}", obj.oid);
-            return BatchResponseObject::error(
-                obj,
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to query object information".to_string(),
-            );
-        }
-    };
-
-    // Scaleway actually doesn't provide SHA256 suport, but maybe in the future :)
-    if !validate_checksum(obj.oid, &result) {
-        return BatchResponseObject::error(
-            obj,
-            StatusCode::UNPROCESSABLE_ENTITY,
-            "Object corrupted".to_string(),
-        );
-    }
-    if !validate_size(obj.size, &result) {
-        return BatchResponseObject::error(
-            obj,
-            StatusCode::UNPROCESSABLE_ENTITY,
-            "Incorrect size specified (or object corrupted)".to_string(),
-        );
-    }
-
-    let expires_in = std::time::Duration::from_secs(5 * 60);
-    let expires_at = Utc::now() + expires_in;
-
-    if trusted {
-        let Ok(config) = aws_sdk_s3::presigning::PresigningConfig::expires_in(expires_in) else {
-            return BatchResponseObject::error(
-                obj,
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to generate upload URL".to_string(),
-            );
-        };
-        let Ok(presigned) = state
-            .s3_client
-            .get_object()
-            .bucket(&state.s3_bucket)
-            .key(full_path)
-            .presigned(config)
-            .await
-        else {
-            return BatchResponseObject::error(
-                obj,
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to generate upload URL".to_string(),
-            );
-        };
-        return BatchResponseObject {
-            oid: obj.oid,
-            size: obj.size,
-            authenticated: Some(true),
-            actions: BatchResponseObjectActions {
-                download: Some(BatchResponseObjectAction {
-                    header: presigned
-                        .headers()
-                        .map(|(k, v)| (k.to_owned(), v.to_owned()))
-                        .collect(),
-                    expires_at,
-                    href: presigned.uri().to_string(),
-                }),
-                ..Default::default()
-            },
-            error: None,
-        };
-    }
-
-    let Some(tag) = common::generate_tag(
-        common::Claims {
-            specific_claims: common::SpecificClaims::Download(obj.oid),
-            repo_path: repo,
-            expires_at,
-        },
-        &state.authz_conf.key,
-    ) else {
-        return BatchResponseObject::error(
-            obj,
-            StatusCode::INTERNAL_SERVER_ERROR,
-            "Internal server error".to_string(),
-        );
-    };
-
-    let upload_path = format!(
-        "{repo}/info/lfs/objects/{}/{}/{}",
-        HexByte(obj.oid[0]),
-        HexByte(obj.oid[1]),
-        obj.oid,
-    );
-
-    BatchResponseObject {
-        oid: obj.oid,
-        size: obj.size,
-        authenticated: Some(true),
-        actions: BatchResponseObjectActions {
-            download: Some(BatchResponseObjectAction {
-                header: {
-                    let mut map = HashMap::new();
-                    map.insert(
-                        "Authorization".to_string(),
-                        format!("Gitolfs3-Hmac-Sha256 {tag} {}", expires_at.timestamp()),
-                    );
-                    map
-                },
-                expires_at,
-                href: format!("{}/{upload_path}", state.base_url),
-            }),
-            ..Default::default()
-        },
-        error: None,
-    }
-}
-
-struct AuthorizationConfig {
-    trusted_forwarded_hosts: HashSet<String>,
-    key: common::Key,
-}
-
-struct Trusted(bool);
-
-fn forwarded_for_trusted_host(
-    headers: &HeaderMap,
-    trusted: &HashSet<String>,
-) -> Result<bool, GitLfsErrorResponse<'static>> {
-    if let Some(forwarded_for) = headers.get("X-Forwarded-For") {
-        if let Ok(forwarded_for) = forwarded_for.to_str() {
-            if trusted.contains(forwarded_for) {
-                return Ok(true);
-            }
-        } else {
-            return Err(make_error_resp(
-                StatusCode::NOT_FOUND,
-                "Invalid X-Forwarded-For header",
-            ));
-        }
-    }
-    Ok(false)
-}
-const REPO_NOT_FOUND: GitLfsErrorResponse =
-    make_error_resp(StatusCode::NOT_FOUND, "Repository not found");
-
-fn authorize_batch(
-    conf: &AuthorizationConfig,
-    repo_path: &str,
-    public: bool,
-    operation: common::Operation,
-    headers: &HeaderMap,
-) -> Result<Trusted, GitLfsErrorResponse<'static>> {
-    // - No authentication required for downloading exported repos
-    // - When authenticated:
-    //   - Download / upload over presigned URLs
-    // - When accessing over Tailscale:
-    //   - No authentication required for downloading from any repo
-
-    let claims = VerifyClaimsInput {
-        specific_claims: common::SpecificClaims::BatchApi(operation),
-        repo_path,
-    };
-    if verify_claims(conf, &claims, headers)? {
-        return Ok(Trusted(true));
-    }
-
-    let trusted = forwarded_for_trusted_host(headers, &conf.trusted_forwarded_hosts)?;
-    if operation != common::Operation::Download {
-        if trusted {
-            return Err(make_error_resp(
-                StatusCode::FORBIDDEN,
-                "Authentication required to upload",
-            ));
-        }
-        return Err(REPO_NOT_FOUND);
-    }
-    if trusted {
-        return Ok(Trusted(true));
-    }
-
-    if public {
-        Ok(Trusted(false))
-    } else {
-        Err(REPO_NOT_FOUND)
-    }
-}
-
-fn repo_exists(name: &str) -> bool {
-    let Ok(metadata) = std::fs::metadata(name) else {
-        return false;
-    };
-    metadata.is_dir()
-}
-
-fn is_repo_public(name: &str) -> Option<bool> {
-    if !repo_exists(name) {
-        return None;
-    }
-    std::fs::metadata(format!("{name}/git-daemon-export-ok"))
-        .ok()?
-        .is_file()
-        .into()
-}
-
-async fn batch(
-    State(state): State<Arc<AppState>>,
-    headers: HeaderMap,
-    RepositoryName(repo): RepositoryName,
-    GitLfsJson(Json(payload)): GitLfsJson<BatchRequest>,
-) -> Response {
-    let Some(public) = is_repo_public(&repo) else {
-        return REPO_NOT_FOUND.into_response();
-    };
-    let Trusted(trusted) = match authorize_batch(
-        &state.authz_conf,
-        &repo,
-        public,
-        payload.operation,
-        &headers,
-    ) {
-        Ok(authn) => authn,
-        Err(e) => return e.into_response(),
-    };
-
-    if !headers
-        .get_all("Accept")
-        .iter()
-        .filter_map(|v| v.to_str().ok())
-        .any(is_git_lfs_json_mimetype)
-    {
-        let message = format!("Expected `{LFS_MIME}` in list of acceptable response media types");
-        return make_error_resp(StatusCode::NOT_ACCEPTABLE, &message).into_response();
-    }
-
-    if payload.hash_algo != HashAlgo::Sha256 {
-        let message = "Unsupported hashing algorithm specified";
-        return make_error_resp(StatusCode::CONFLICT, message).into_response();
-    }
-    if !payload.transfers.is_empty() && !payload.transfers.contains(&TransferAdapter::Basic) {
-        let message = "Unsupported transfer adapter specified (supported: basic)";
-        return make_error_resp(StatusCode::CONFLICT, message).into_response();
-    }
-
-    let mut resp = BatchResponse {
-        transfer: TransferAdapter::Basic,
-        objects: vec![],
-        hash_algo: HashAlgo::Sha256,
-    };
-    for obj in payload.objects {
-        match payload.operation {
-            common::Operation::Download => resp
-                .objects
-                .push(handle_download_object(&state, &repo, &obj, trusted).await),
-            common::Operation::Upload => {
-                if let Some(obj_resp) = handle_upload_object(&state, &repo, &obj).await {
-                    resp.objects.push(obj_resp);
-                }
-            }
-        };
-    }
-    GitLfsJson(Json(resp)).into_response()
-}
-
-#[derive(Deserialize, Copy, Clone)]
-#[serde(remote = "Self")]
-struct FileParams {
-    oid0: HexByte,
-    oid1: HexByte,
-    oid: common::Oid,
-}
-
-impl<'de> Deserialize<'de> for FileParams {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: serde::Deserializer<'de>,
-    {
-        let unchecked @ FileParams {
-            oid0: HexByte(oid0),
-            oid1: HexByte(oid1),
-            oid,
-        } = FileParams::deserialize(deserializer)?;
-        if oid0 != oid.as_bytes()[0] {
-            return Err(de::Error::custom(
-                "first OID path part does not match first byte of full OID",
-            ));
-        }
-        if oid1 != oid.as_bytes()[1] {
-            return Err(de::Error::custom(
-                "second OID path part does not match first byte of full OID",
-            ));
-        }
-        Ok(unchecked)
-    }
-}
-
-pub struct VerifyClaimsInput<'a> {
-    pub specific_claims: common::SpecificClaims,
-    pub repo_path: &'a str,
-}
-
-fn verify_claims(
-    conf: &AuthorizationConfig,
-    claims: &VerifyClaimsInput,
-    headers: &HeaderMap,
-) -> Result<bool, GitLfsErrorResponse<'static>> {
-    const INVALID_AUTHZ_HEADER: GitLfsErrorResponse =
-        make_error_resp(StatusCode::BAD_REQUEST, "Invalid authorization header");
-
-    if let Some(authz) = headers.get(header::AUTHORIZATION) {
-        if let Ok(authz) = authz.to_str() {
-            if let Some(val) = authz.strip_prefix("Gitolfs3-Hmac-Sha256 ") {
-                let (tag, expires_at) = val.split_once(' ').ok_or(INVALID_AUTHZ_HEADER)?;
-                let tag: common::Digest<32> = tag.parse().map_err(|_| INVALID_AUTHZ_HEADER)?;
-                let expires_at: i64 = expires_at.parse().map_err(|_| INVALID_AUTHZ_HEADER)?;
-                let expires_at =
-                    DateTime::<Utc>::from_timestamp(expires_at, 0).ok_or(INVALID_AUTHZ_HEADER)?;
-                let Some(expected_tag) = common::generate_tag(
-                    common::Claims {
-                        specific_claims: claims.specific_claims,
-                        repo_path: claims.repo_path,
-                        expires_at,
-                    },
-                    &conf.key,
-                ) else {
-                    return Err(make_error_resp(
-                        StatusCode::INTERNAL_SERVER_ERROR,
-                        "Internal server error",
-                    ));
-                };
-                if tag == expected_tag {
-                    return Ok(true);
-                }
-            }
-        }
-        return Err(INVALID_AUTHZ_HEADER);
-    }
-    Ok(false)
-}
-
-fn authorize_get(
-    conf: &AuthorizationConfig,
-    repo_path: &str,
-    oid: common::Oid,
-    headers: &HeaderMap,
-) -> Result<(), GitLfsErrorResponse<'static>> {
-    let claims = VerifyClaimsInput {
-        specific_claims: common::SpecificClaims::Download(oid),
-        repo_path,
-    };
-    if !verify_claims(conf, &claims, headers)? {
-        return Err(make_error_resp(
-            StatusCode::UNAUTHORIZED,
-            "Repository not found",
-        ));
-    }
-    Ok(())
-}
-
-async fn obj_download(
-    State(state): State<Arc<AppState>>,
-    headers: HeaderMap,
-    RepositoryName(repo): RepositoryName,
-    Path(FileParams { oid0, oid1, oid }): Path<FileParams>,
-) -> Response {
-    if let Err(e) = authorize_get(&state.authz_conf, &repo, oid, &headers) {
-        return e.into_response();
-    }
-
-    let full_path = format!("{repo}/lfs/objects/{}/{}/{}", oid0, oid1, oid);
-    let result = match state
-        .s3_client
-        .get_object()
-        .bucket(&state.s3_bucket)
-        .key(full_path)
-        .checksum_mode(aws_sdk_s3::types::ChecksumMode::Enabled)
-        .send()
-        .await
-    {
-        Ok(result) => result,
-        Err(e) => {
-            println!("Failed to GetObject (repo {repo}, OID {oid}): {e}");
-            return (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to query object information",
-            )
-                .into_response();
-        }
-    };
-
-    let mut headers = header::HeaderMap::new();
-    if let Some(content_type) = result.content_type {
-        let Ok(header_value) = content_type.try_into() else {
-            return (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Object has invalid content type",
-            )
-                .into_response();
-        };
-        headers.insert(header::CONTENT_TYPE, header_value);
-    }
-    if let Some(content_length) = result.content_length {
-        headers.insert(header::CONTENT_LENGTH, content_length.into());
-    }
-
-    let async_read = result.body.into_async_read();
-    let stream = tokio_util::io::ReaderStream::new(async_read);
-    let body = axum::body::Body::from_stream(stream);
-
-    (headers, body).into_response()
-}
-
-#[test]
-fn test_mimetype() {
-    assert!(is_git_lfs_json_mimetype("application/vnd.git-lfs+json"));
-    assert!(!is_git_lfs_json_mimetype("application/vnd.git-lfs"));
-    assert!(!is_git_lfs_json_mimetype("application/json"));
-    assert!(is_git_lfs_json_mimetype(
-        "application/vnd.git-lfs+json; charset=utf-8"
-    ));
-    assert!(is_git_lfs_json_mimetype(
-        "application/vnd.git-lfs+json; charset=UTF-8"
-    ));
-    assert!(!is_git_lfs_json_mimetype(
-        "application/vnd.git-lfs+json; charset=ISO-8859-1"
-    ));
-}
-
-#[test]
-fn test_deserialize() {
-    let json = r#"{"operation":"upload","objects":[{"oid":"8f4123f9a7181f488c5e111d82cefd992e461ae5df01fd2254399e6e670b2d3c","size":170904}],
-                   "transfers":["lfs-standalone-file","basic","ssh"],"ref":{"name":"refs/heads/main"},"hash_algo":"sha256"}"#;
-    let expected = BatchRequest {
-        operation: common::Operation::Upload,
-        objects: vec![BatchRequestObject {
-            oid: "8f4123f9a7181f488c5e111d82cefd992e461ae5df01fd2254399e6e670b2d3c"
-                .parse()
-                .unwrap(),
-            size: 170904,
-        }],
-        transfers: vec![
-            TransferAdapter::Unknown,
-            TransferAdapter::Basic,
-            TransferAdapter::Unknown,
-        ],
-        hash_algo: HashAlgo::Sha256,
-    };
-    assert_eq!(
-        serde_json::from_str::<BatchRequest>(json).unwrap(),
-        expected
-    );
-}
-
-#[test]
-fn test_validate_claims() {
-    let key = "00232f7a019bd34e3921ee6c5f04caf48a4489d1be5d1999038950a7054e0bfea369ce2becc0f13fd3c69f8af2384a25b7ac2d52eb52c33722f3c00c50d4c9c2";
-    let key: common::Key = key.parse().unwrap();
-
-    let claims = common::Claims {
-        expires_at: Utc::now() + std::time::Duration::from_secs(5 * 60),
-        repo_path: "lfs-test.git",
-        specific_claims: common::SpecificClaims::BatchApi(common::Operation::Download),
-    };
-    let tag = common::generate_tag(claims, &key).unwrap();
-    let header_value = format!(
-        "Gitolfs3-Hmac-Sha256 {tag} {}",
-        claims.expires_at.timestamp()
-    );
-
-    let conf = AuthorizationConfig {
-        key,
-        trusted_forwarded_hosts: HashSet::new(),
-    };
-    let verification_claims = VerifyClaimsInput {
-        repo_path: claims.repo_path,
-        specific_claims: claims.specific_claims,
-    };
-    let mut headers = HeaderMap::new();
-    headers.insert(header::AUTHORIZATION, header_value.try_into().unwrap());
-
-    assert!(verify_claims(&conf, &verification_claims, &headers).unwrap());
-}