Files
PiCloud/crates/manager-core/src/files_api.rs
MechaCat02 ec4a2aa24a style: cargo fmt across audit-2026-06-11 tier-3 changes
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-12 18:38:28 +02:00

280 lines
9.2 KiB
Rust

//! `/api/v1/admin/apps/{id}/files*` — minimal files admin endpoints
//! backing the dashboard's files view (v1.1.5).
//!
//! Two operations only, both operator-facing:
//! * `GET /apps/{id}/files?collection=<c>&cursor=&limit=` — list file
//! metadata for a collection (cursor-paginated).
//! * `DELETE /apps/{id}/files/{collection}/{file_id}` — remove a file.
//!
//! These talk to the `FilesRepo` directly (like `triggers_api` talks to
//! `TriggerRepo`), guarded by the same capability model as the SDK
//! (`AppFilesRead` / `AppFilesWrite`). **Admin deletes do NOT emit a
//! `files:delete` trigger event** — they're operator cleanup actions,
//! not script mutations (see HANDBACK §7). The capability binds to the
//! resource's `app_id` after the app is loaded.
use std::sync::Arc;
use axum::body::Body;
use axum::extract::{Path, Query, State};
use axum::http::header::{CONTENT_DISPOSITION, CONTENT_LENGTH, CONTENT_TYPE};
use axum::http::StatusCode;
use axum::response::{IntoResponse, Json, Response};
use axum::routing::get;
use axum::{Extension, Router};
use picloud_shared::{validate_files_collection, AppId, Principal};
use serde::{Deserialize, Serialize};
use serde_json::json;
use uuid::Uuid;
use crate::app_repo::AppRepository;
use crate::authz::{require, AuthzDenied, AuthzError, AuthzRepo, Capability};
use crate::files_repo::{FilesRepo, FilesRepoError};
#[derive(Clone)]
pub struct FilesAdminState {
pub files: Arc<dyn FilesRepo>,
pub apps: Arc<dyn AppRepository>,
pub authz: Arc<dyn AuthzRepo>,
}
pub fn files_admin_router(state: FilesAdminState) -> Router {
Router::new()
.route("/apps/{app_id}/files", get(list_files))
.route(
"/apps/{app_id}/files/{collection}/{file_id}",
get(get_file).delete(delete_file),
)
.with_state(state)
}
#[derive(Debug, Deserialize)]
pub struct ListFilesQuery {
pub collection: String,
#[serde(default)]
pub cursor: Option<String>,
#[serde(default)]
pub limit: Option<u32>,
}
#[derive(Debug, Serialize)]
struct FileMetaDto {
id: String,
collection: String,
name: String,
content_type: String,
size: u64,
checksum: String,
created_at: String,
updated_at: String,
}
#[derive(Debug, Serialize)]
struct ListFilesResponse {
files: Vec<FileMetaDto>,
next_cursor: Option<String>,
}
async fn list_files(
State(s): State<FilesAdminState>,
Extension(principal): Extension<Principal>,
Path(id_or_slug): Path<String>,
Query(q): Query<ListFilesQuery>,
) -> Result<Json<ListFilesResponse>, FilesApiError> {
let app_id = resolve_app(&*s.apps, &id_or_slug).await?;
require(
s.authz.as_ref(),
&principal,
Capability::AppFilesRead(app_id),
)
.await?;
// Audit 2026-06-11 (F-FS-002) — the admin endpoints hit the repo
// directly (not via FilesServiceImpl, which validates), so a
// traversal-shaped collection would otherwise only be caught by the
// repo's `guard_collection` as an opaque 500. Validate here for a
// clean 422 and as the outer layer of the belt-and-suspenders guard.
validate_files_collection(&q.collection).map_err(|e| FilesApiError::Invalid(e.to_string()))?;
let page = s
.files
.list(
app_id,
&q.collection,
q.cursor.as_deref(),
q.limit.unwrap_or(0),
)
.await?;
let files = page
.files
.into_iter()
.map(|m| FileMetaDto {
id: m.id.to_string(),
collection: m.collection,
name: m.name,
content_type: m.content_type,
size: m.size,
checksum: m.checksum,
created_at: m.created_at.to_rfc3339(),
updated_at: m.updated_at.to_rfc3339(),
})
.collect();
Ok(Json(ListFilesResponse {
files,
next_cursor: page.next_cursor,
}))
}
/// `GET /apps/{id}/files/{collection}/{file_id}` — stream the file's
/// bytes as a download. The dashboard's Download button hits this;
/// metadata is read via `FilesRepo::head`, bytes via `FilesRepo::get`
/// (which checksum-verifies on read).
///
/// Audit 2026-06-11 C-2 — response hardening. The previous handler
/// served `Content-Disposition: inline` with the user-supplied
/// `Content-Type` and no `nosniff` / CSP, so an SVG or HTML upload
/// rendered same-origin and hijacked the admin session. Now:
/// * `Content-Disposition: attachment` always.
/// * `Content-Type` re-sanitized to the storage allowlist as
/// belt-and-suspenders (`files_service::create` / `update` already
/// coerce at write, but older rows may pre-date that change).
/// * `X-Content-Type-Options: nosniff` blocks MIME-sniffing fallbacks.
/// * Restrictive CSP scopes any residual rendering attempt.
async fn get_file(
State(s): State<FilesAdminState>,
Extension(principal): Extension<Principal>,
Path((id_or_slug, collection, file_id)): Path<(String, String, String)>,
) -> Result<Response, FilesApiError> {
let app_id = resolve_app(&*s.apps, &id_or_slug).await?;
require(
s.authz.as_ref(),
&principal,
Capability::AppFilesRead(app_id),
)
.await?;
validate_files_collection(&collection).map_err(|e| FilesApiError::Invalid(e.to_string()))?;
let id = Uuid::parse_str(&file_id).map_err(|_| FilesApiError::NotFound)?;
let meta = s
.files
.head(app_id, &collection, id)
.await?
.ok_or(FilesApiError::NotFound)?;
let bytes = s
.files
.get(app_id, &collection, id)
.await?
.ok_or(FilesApiError::NotFound)?;
let safe_ct = picloud_shared::sanitize_stored_content_type(&meta.content_type);
let disposition = format!(
"attachment; filename=\"{}\"",
meta.name.replace('"', "").replace(['\r', '\n'], "")
);
let len = bytes.len();
Ok(Response::builder()
.status(StatusCode::OK)
.header(CONTENT_TYPE, safe_ct)
.header(CONTENT_DISPOSITION, disposition)
.header(CONTENT_LENGTH, len)
.header("X-Content-Type-Options", "nosniff")
.header(
"Content-Security-Policy",
"default-src 'none'; sandbox; frame-ancestors 'none'",
)
.header("Referrer-Policy", "no-referrer")
.body(Body::from(bytes))
.expect("build files download response"))
}
async fn delete_file(
State(s): State<FilesAdminState>,
Extension(principal): Extension<Principal>,
Path((id_or_slug, collection, file_id)): Path<(String, String, String)>,
) -> Result<StatusCode, FilesApiError> {
let app_id = resolve_app(&*s.apps, &id_or_slug).await?;
require(
s.authz.as_ref(),
&principal,
Capability::AppFilesWrite(app_id),
)
.await?;
validate_files_collection(&collection).map_err(|e| FilesApiError::Invalid(e.to_string()))?;
let id = Uuid::parse_str(&file_id).map_err(|_| FilesApiError::NotFound)?;
if s.files.delete(app_id, &collection, id).await?.is_none() {
return Err(FilesApiError::NotFound);
}
Ok(StatusCode::NO_CONTENT)
}
async fn resolve_app(apps: &dyn AppRepository, ident: &str) -> Result<AppId, FilesApiError> {
crate::app_repo::resolve_app(apps, ident)
.await
.map_err(|e| FilesApiError::Backend(e.to_string()))?
.map(|l| l.app.id)
.ok_or(FilesApiError::AppNotFound)
}
#[derive(Debug, thiserror::Error)]
pub enum FilesApiError {
#[error("app not found")]
AppNotFound,
#[error("file not found")]
NotFound,
#[error("invalid request: {0}")]
Invalid(String),
#[error("forbidden")]
Forbidden,
#[error("authorization repo error: {0}")]
AuthzRepo(String),
#[error("files backend: {0}")]
Backend(String),
}
impl From<AuthzDenied> for FilesApiError {
fn from(d: AuthzDenied) -> Self {
match d {
AuthzDenied::Denied => Self::Forbidden,
AuthzDenied::Repo(e) => Self::AuthzRepo(e.to_string()),
}
}
}
impl From<AuthzError> for FilesApiError {
fn from(e: AuthzError) -> Self {
Self::AuthzRepo(e.to_string())
}
}
impl From<FilesRepoError> for FilesApiError {
fn from(e: FilesRepoError) -> Self {
Self::Backend(e.to_string())
}
}
impl IntoResponse for FilesApiError {
fn into_response(self) -> Response {
let (status, body) = match &self {
Self::AppNotFound | Self::NotFound => {
(StatusCode::NOT_FOUND, json!({ "error": self.to_string() }))
}
Self::Invalid(_) => (
StatusCode::UNPROCESSABLE_ENTITY,
json!({ "error": self.to_string() }),
),
Self::Forbidden => (StatusCode::FORBIDDEN, json!({ "error": self.to_string() })),
Self::AuthzRepo(e) => {
tracing::error!(error = %e, "files admin authz repo error");
(
StatusCode::INTERNAL_SERVER_ERROR,
json!({ "error": "internal error" }),
)
}
Self::Backend(e) => {
tracing::error!(error = %e, "files admin backend error");
(
StatusCode::INTERNAL_SERVER_ERROR,
json!({ "error": "internal error" }),
)
}
};
(status, Json(body)).into_response()
}
}