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Oxicloud/src/interfaces/api/handlers/webdav_handler.rs
T
Dionisio Pozo 4f51cb7aab Merge pull request #613 from AtalayaLabs/claude/performance-optimization-round-5
perf: round 5 — CalDAV cursor streaming, SPA interning gaps, NC href prefix, per-request micro-allocs
2026-07-18 10:30:11 +02:00

3381 lines
131 KiB
Rust

/**
* WebDAV Handler Module
*
* This module implements the WebDAV protocol (RFC 4918) endpoints for OxiCloud.
* It provides a complete WebDAV server implementation that allows clients to
* perform file operations over HTTP, including reading, writing, and manipulating
* files and directories.
*/
use axum::{
Router,
body::{self, Body},
http::{HeaderName, Request, StatusCode, header},
response::Response,
};
use bytes::{Buf, Bytes};
use chrono::Utc;
use quick_xml::Writer;
use uuid::Uuid;
use crate::application::adapters::webdav_adapter::{
LockInfo, PropFindRequest, PropPatchOp, QualifiedName, WebDavAdapter, is_protected_property,
};
use crate::application::dtos::display_helpers::intern_display;
use crate::application::dtos::file_dto::FileDto;
use crate::application::dtos::folder_dto::FolderDto;
use crate::application::ports::authorization_ports::AuthorizationEngine;
use crate::application::ports::file_ports::FileRetrievalUseCase;
use crate::application::ports::file_ports::{FileManagementUseCase, FileUploadUseCase};
use crate::application::ports::folder_ports::FolderUseCase;
use crate::application::ports::storage_ports::StorageUsagePort;
use crate::application::services::file_retrieval_service::FileRetrievalService;
use crate::application::services::folder_service::FolderService;
use crate::common::di::AppState;
use crate::domain::repositories::drive_repository::DriveRepository;
use crate::domain::services::authorization::{Permission, Resource, Subject};
use crate::infrastructure::services::path_resolver_service::ResolvedResource;
use crate::infrastructure::services::webdav_dead_property_store::{DeadPropertyStore, ResourceRef};
use crate::interfaces::errors::AppError;
use crate::interfaces::middleware::auth::{AuthUser, CurrentUser};
use crate::interfaces::range_requests::{not_modified_response, range_response};
use percent_encoding::{AsciiSet, NON_ALPHANUMERIC, percent_decode_str, utf8_percent_encode};
use std::collections::HashMap;
use std::sync::Arc;
/// Characters that MUST NOT be percent-encoded inside a URI path segment.
/// RFC 3986 §3.3 pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
/// unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
/// sub-delims = "!" / "$" / "&" / "'" / "(" / ")" / "*" / "+" / "," / ";" / "="
const PATH_SEGMENT_ENCODE_SET: &AsciiSet = &NON_ALPHANUMERIC
.remove(b'-')
.remove(b'.')
.remove(b'_')
.remove(b'~')
.remove(b'!')
.remove(b'$')
.remove(b'&')
.remove(b'\'')
.remove(b'(')
.remove(b')')
.remove(b'*')
.remove(b'+')
.remove(b',')
.remove(b';')
.remove(b'=')
.remove(b':')
.remove(b'@');
/// Percent-encode a single URI path segment (folder/file name).
/// Percent-encode a full slash-separated path, encoding each segment individually.
pub(crate) fn encode_uri_path(path: &str) -> String {
use std::fmt::Write as _;
// `utf8_percent_encode` returns a `Display` adapter, so write each encoded
// segment straight into `out` — avoids a String per segment and the joined
// Vec the previous `.map(...).collect::<Vec<_>>().join("/")` allocated on
// every PROPFIND href.
let mut out = String::with_capacity(path.len() + 8);
for (i, segment) in path.split('/').enumerate() {
if i > 0 {
out.push('/');
}
let _ = write!(
out,
"{}",
utf8_percent_encode(segment, PATH_SEGMENT_ENCODE_SET)
);
}
out
}
/// Build the `<D:href>` value for a non-collection (file) resource.
///
/// RFC 4918 §5.2 distinguishes collection (folder) URLs from
/// non-collection URLs by a trailing `/`. Files use NO trailing
/// slash. Mirror of [`webdav_collection_href`] — keep both arms
/// of the choice on the same screen so an "is it a file or a
/// folder?" reviewer can verify both branches at once.
fn webdav_href(path: &str) -> String {
format!("/webdav/{}", encode_uri_path(path))
}
/// Build the `<D:href>` value for a collection (folder) resource.
///
/// Always terminates with `/` — RFC 4918 §5.2 requires collection
/// URLs to end in a slash, and strict WebDAV clients (notably the
/// NextCloud desktop sync engine, which also speaks to this
/// endpoint) abort multi-status parses with
/// `Invalid href "<…>" expected starting with "<requested-url>"`
/// when the response's own-entry href is missing the trailing `/`.
/// PROPPATCH and LOCK responses on folders MUST use this — using
/// [`webdav_href`] for a folder is the bug class this helper
/// exists to prevent.
fn webdav_collection_href(path: &str) -> String {
let h = webdav_href(path);
if h.ends_with('/') {
h
} else {
format!("{}/", h)
}
}
// Create a custom DAV header since it's not in the standard headers
const HEADER_DAV: HeaderName = HeaderName::from_static("dav");
const HEADER_LOCK_TOKEN: HeaderName = HeaderName::from_static("lock-token");
// const HEADER_IF: HeaderName = HeaderName::from_static("if");
/// Maximum body size for XML-based WebDAV requests (PROPFIND, PROPPATCH, LOCK).
/// 1 MB is generous — a typical PROPFIND body is < 1 KB.
const MAX_XML_BODY: usize = 1_048_576;
/// Maximum body size for MKCOL requests (RFC 4918: body must be empty).
const MAX_MKCOL_BODY: usize = 4096;
/// Batch size for streaming PROPFIND — files and folders are fetched in pages
/// of this size to keep memory constant regardless of folder contents.
/// `pub(crate)` so the NextCloud PROPFIND handler streams with the same
/// page size.
pub(crate) const PROPFIND_BATCH_SIZE: i64 = 500;
// ────────────────────────────────────────────────────────────────────────
// Security helpers (Sol.1 — handler-level user extraction & ownership guard)
// ────────────────────────────────────────────────────────────────────────
/// Extract the authenticated [`CurrentUser`] from the request extensions.
///
/// Every mutating or data-returning WebDAV handler **must** call this so
/// that the real `user.id` is available for ownership checks and for the
/// user-scoped `PathResolverService` methods.
fn extract_user(req: &Request<Body>) -> Result<AuthUser, AppError> {
req.extensions()
.get::<Arc<CurrentUser>>()
.cloned()
.map(AuthUser)
.ok_or_else(|| AppError::unauthorized("Authentication required"))
}
/**
* Creates and returns the WebDAV router with all required endpoints.
*
* This function sets up all WebDAV method handlers following RFC 4918,
* mapping HTTP methods to appropriate WebDAV operations.
*
* @return Router configured with WebDAV endpoints
*/
pub fn webdav_routes() -> Router<Arc<AppState>> {
// Three explicit routes to avoid Axum trailing-slash gaps
// (same pattern used for CalDAV/CardDAV)
Router::new()
.route("/webdav/{*path}", axum::routing::any(handle_webdav_methods))
.route("/webdav/", axum::routing::any(handle_webdav_methods_root))
.route("/webdav", axum::routing::any(handle_webdav_methods_root))
}
/// Reject paths that contain path-traversal segments (`.` or `..`).
///
/// Although deeper layers (PathResolver, StoragePath) also filter these out,
/// blocking them at the HTTP boundary provides defense-in-depth and ensures
/// no handler ever receives a traversal attempt.
fn reject_path_traversal(path: &str) -> Result<(), AppError> {
for segment in path.split('/') {
if segment == ".." || segment == "." {
return Err(AppError::bad_request(
"Path must not contain '.' or '..' segments",
));
}
}
Ok(())
}
/// Extract the resource path from the request URI, stripping the `/webdav/` prefix
/// and percent-decoding the result so that folder/file names with spaces and
/// special characters match the values stored in the database.
fn extract_webdav_path(uri: &axum::http::Uri) -> String {
let raw = uri.path();
let encoded = if let Some(rest) = raw.strip_prefix("/webdav/") {
rest.trim_end_matches('/')
} else if raw == "/webdav" {
""
} else {
// Fallback: split-based extraction
let trimmed = raw.strip_prefix('/').unwrap_or(raw);
trimmed.trim_end_matches('/')
};
// Decode percent-encoded characters (e.g. %20 → space)
percent_decode_str(encoded).decode_utf8_lossy().into_owned()
}
async fn handle_webdav_methods_root(
axum::extract::State(state): axum::extract::State<Arc<AppState>>,
req: Request<Body>,
) -> Result<Response<Body>, AppError> {
handle_webdav_dispatch(state, req, String::new()).await
}
async fn handle_webdav_methods(
axum::extract::State(state): axum::extract::State<Arc<AppState>>,
req: Request<Body>,
) -> Result<Response<Body>, AppError> {
let path = extract_webdav_path(req.uri());
reject_path_traversal(&path)?;
handle_webdav_dispatch(state, req, path).await
}
/// Native WebDAV URL scheme (drive.md §9):
///
/// The exact wire shape depends on
/// `FeaturesConfig::webdav_drive_listing_prefix` (env
/// `OXICLOUD_WEBDAV_DRIVE_LISTING_PREFIX`, default `"@drive"`):
///
/// | Config | URL | Target |
/// |---|---|---|
/// | `"@drive"` | `/webdav/…` | default drive (back-compat) |
/// | `"@drive"` | `/webdav/@drive/` | drive listing |
/// | `"@drive"` | `/webdav/@drive/<sel>/…` | explicit drive |
/// | `""` | `/webdav/` | drive listing |
/// | `""` | `/webdav/<sel>/…` | explicit drive |
/// | `"drives"` | `/webdav/…` | default drive |
/// | `"drives"` | `/webdav/drives/<sel>/…` | explicit drive |
///
/// `<sel>` is a drive UUID **or** the drive's display name (matched
/// against `storage.folders.name` of the drive root). Only drives the
/// caller has Read on via `role_grants` resolve.
///
/// Legacy tolerance for the default-drive branch: bookmarks that
/// already contain the drive-root name as their first segment
/// (`/webdav/Personal/foo` under a Personal-default user) are passed
/// through instead of double-prepended.
enum WebdavTarget {
/// Render the synthetic drive-listing pseudo-root. Only PROPFIND
/// treats this as a real target; other verbs 405.
ListDrives,
/// Descend into a concrete drive.
Scope(DriveScope),
}
struct DriveScope {
drive_id: Uuid,
/// Path in `storage.folders.path` format (drive-root name is the
/// leading segment; that prefix is stored per D7).
db_path: String,
}
async fn resolve_webdav_scope(
state: &Arc<AppState>,
user_id: Uuid,
url_path: &str,
) -> Result<WebdavTarget, AppError> {
let drive_prefix = state
.core
.config
.features
.webdav_drive_listing_prefix
.as_str();
let normalized = url_path.trim_matches('/');
// Mode A: empty prefix. `/webdav/` IS the drive listing.
if drive_prefix.is_empty() {
if normalized.is_empty() {
return Ok(WebdavTarget::ListDrives);
}
let (selector, subpath) = normalized.split_once('/').unwrap_or((normalized, ""));
let drive = lookup_drive_selector(state, user_id, selector).await?;
return Ok(WebdavTarget::Scope(DriveScope {
drive_id: drive.drive.id,
db_path: join_drive_path(&drive.root_folder_name, subpath),
}));
}
// Mode B: non-empty prefix (default `@drive`). Bare `/webdav/` is
// the caller's default drive; drive listing lives at
// `/webdav/<prefix>/`.
let listing_marker = drive_prefix;
if normalized == listing_marker {
return Ok(WebdavTarget::ListDrives);
}
let with_slash = format!("{}/", listing_marker);
if let Some(after_prefix) = normalized.strip_prefix(&with_slash) {
if after_prefix.is_empty() {
return Ok(WebdavTarget::ListDrives);
}
let (selector, subpath) = after_prefix.split_once('/').unwrap_or((after_prefix, ""));
let drive = lookup_drive_selector(state, user_id, selector).await?;
return Ok(WebdavTarget::Scope(DriveScope {
drive_id: drive.drive.id,
db_path: join_drive_path(&drive.root_folder_name, subpath),
}));
}
// Default-drive back-compat.
let default = state
.drive_repo
.find_default_for_user(user_id)
.await
.map_err(|e| {
AppError::internal_error(format!("Failed to resolve default drive: {:?}", e))
})?;
let root_name = default.root_folder_name.as_str();
let db_path = if normalized.is_empty() {
root_name.to_string()
} else if normalized == root_name || normalized.starts_with(&format!("{}/", root_name)) {
// Pre-refactor bookmark already carried the drive-root prefix.
normalized.to_string()
} else {
join_drive_path(root_name, normalized)
};
Ok(WebdavTarget::Scope(DriveScope {
drive_id: default.drive.id,
db_path,
}))
}
/// Convenience: unwrap the common Scope branch or map ListDrives to a
/// 405-shape error. Used by every write verb (PUT/DELETE/MOVE/COPY/…)
/// that can't sensibly operate on the drive-listing pseudo-root.
async fn resolve_webdav_scope_or_405(
state: &Arc<AppState>,
user_id: Uuid,
url_path: &str,
) -> Result<DriveScope, AppError> {
match resolve_webdav_scope(state, user_id, url_path).await? {
WebdavTarget::Scope(s) => Ok(s),
WebdavTarget::ListDrives => Err(AppError::method_not_allowed(
"Method not supported on the drive-listing pseudo-root",
)),
}
}
fn join_drive_path(root_name: &str, subpath: &str) -> String {
let subpath = subpath.trim_start_matches('/').trim_end_matches('/');
if subpath.is_empty() {
root_name.to_string()
} else {
format!("{}/{}", root_name, subpath)
}
}
/// Resolve `@drive/<selector>`: try the selector as a UUID first, then
/// fall back to matching the drive-root folder's display name. Only
/// drives the caller has Read access to via `role_grants` are
/// considered — an unknown selector and a permission denial return the
/// same `NotFound` to preserve anti-enumeration.
async fn lookup_drive_selector(
state: &Arc<AppState>,
user_id: Uuid,
selector: &str,
) -> Result<crate::domain::repositories::drive_repository::DriveWithRootName, AppError> {
let selector_decoded = percent_decode_str(selector).decode_utf8_lossy();
let uuid_opt = Uuid::parse_str(selector_decoded.as_ref()).ok();
let visible = state
.drive_repo
.list_readable_by(user_id)
.await
.map_err(|e| AppError::internal_error(format!("Failed to list drives: {:?}", e)))?;
for d in visible.iter() {
if let Some(uuid) = uuid_opt
&& d.drive.id == uuid
{
return Ok(d.clone());
}
if d.root_folder_name == selector_decoded.as_ref() {
return Ok(d.clone());
}
}
Err(AppError::not_found(format!(
"Drive '{}' not found",
selector_decoded
)))
}
async fn handle_webdav_dispatch(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let method = req.method().clone();
// Path is left as the raw URL path (post-`/webdav/`). Every handler
// that touches storage calls `resolve_webdav_scope` to translate the
// URL → (drive_id, db_path).
match method.as_str() {
"OPTIONS" => handle_options(path).await,
"GET" => handle_get(state, req, path).await,
"HEAD" => handle_head(state, req, path).await,
"PUT" => handle_put(state, req, path).await,
"MKCOL" => handle_mkcol(state, req, path).await,
"DELETE" => handle_delete(state, req, path).await,
"MOVE" => handle_move(state, req, path).await,
"COPY" => handle_copy(state, req, path).await,
"PROPFIND" => handle_propfind(state, req, path).await,
"PROPPATCH" => handle_proppatch(state, req, path).await,
"LOCK" => handle_lock(state, req, path).await,
"UNLOCK" => handle_unlock(state, req, path).await,
_ => Err(AppError::method_not_allowed(format!(
"Method not allowed: {}",
method
))),
}
}
/**
* Handles OPTIONS requests to advertise WebDAV capabilities.
*
* This handler responds with the DAV header indicating WebDAV compliance
* level and the methods supported by this WebDAV server.
*
* @param state The application state containing service dependencies
* @param path The requested resource path
* @return HTTP response with appropriate WebDAV headers
*/
async fn handle_options(_path: String) -> Result<Response<Body>, AppError> {
Ok(Response::builder()
.status(StatusCode::OK)
.header(HEADER_DAV, "1, 2") // Class 1 and 2 WebDAV support
.header(
header::ALLOW,
"OPTIONS, GET, HEAD, PUT, DELETE, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK",
)
.body(Body::empty())
.unwrap())
}
/**
* Handles PROPFIND requests to retrieve resource properties.
*
* This handler processes WebDAV PROPFIND requests according to RFC 4918,
* retrieving properties of files and folders in the specified path.
*
* **Security hardening (Sol.2):** `Depth: infinity` is rejected with
* `403 Forbidden` and the RFC 4918 `propfind-finite-depth` precondition
* error body. The default depth when the header is absent is `1`.
*
* **Streaming response (Sol.3):** For `Depth: 1`, files and sub-folders
* are fetched in batches of `PROPFIND_BATCH_SIZE` and the XML response
* is written incrementally to a streaming body. Memory usage is O(batch)
* regardless of how many children the folder contains.
*
* @param state The application state containing service dependencies
* @param req The HTTP request containing the PROPFIND XML body
* @param path The requested resource path
* @return 207 Multi-Status XML response with resource properties
*/
async fn handle_propfind(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
// ── 1. Extract and validate Depth header ─────────────────────
let depth = req
.headers()
.get("Depth")
.and_then(|v| v.to_str().ok())
.unwrap_or("1");
// RFC 4918 §9.1: servers MAY reject Depth:infinity with 403
if depth == "infinity" {
let body = r#"<?xml version="1.0" encoding="utf-8"?>
<D:error xmlns:D="DAV:">
<D:propfind-finite-depth/>
</D:error>"#;
return Ok(Response::builder()
.status(StatusCode::FORBIDDEN)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.body(Body::from(body))
.unwrap());
}
// Normalize: anything other than "0" or "1" is treated as "0"
let depth = match depth {
"0" | "1" => depth,
_ => "0",
};
let depth_owned = depth.to_string();
// ── 2. Authenticate ──────────────────────────────────────────
let user = extract_user(&req)?;
// Client-facing path for href construction — must be extracted before
// req.into_body() consumes the request. The `path` parameter already has
// the home-folder prefix prepended (e.g. `admin/docs`) so it's correct for
// DB lookups but wrong for WebDAV hrefs (clients see `/webdav/docs`).
let client_path = extract_webdav_path(req.uri());
// ── 3. Parse PROPFIND XML body ───────────────────────────────
let body_bytes = {
let body = req.into_body();
body::to_bytes(body, MAX_XML_BODY)
.await
.map_err(|e| AppError::bad_request(format!("Failed to read request body: {}", e)))?
};
let propfind_request = if body_bytes.is_empty() {
PropFindRequest {
prop_find_type: crate::application::adapters::webdav_adapter::PropFindType::AllProp,
}
} else {
WebDavAdapter::parse_propfind(body_bytes.reader()).map_err(|e| {
AppError::bad_request(format!("Failed to parse PROPFIND request: {}", e))
})?
};
// ── 4. Services ──────────────────────────────────────────────
let folder_service = state.applications.folder_service.clone();
let file_retrieval_service = state.applications.file_retrieval_service.clone();
// Use client-facing path for hrefs so responses match the request URL.
let base_href = if client_path.is_empty() || client_path == "/" {
"/webdav/".to_string()
} else {
format!("/webdav/{}/", encode_uri_path(&client_path))
};
// ── 5. Determine target resource ─────────────────────────────
//
// `resolve_webdav_scope` handles the URL → scope translation using
// `OXICLOUD_WEBDAV_DRIVE_LISTING_PREFIX`. It can return either a concrete
// drive scope or the synthetic drive-listing pseudo-root. Only
// PROPFIND treats `ListDrives` as a valid target — other verbs use
// `resolve_webdav_scope_or_405` which errors on that branch.
let (drive_id, path) = match resolve_webdav_scope(&state, user.id, &path).await? {
WebdavTarget::ListDrives => {
let root_folder = FolderDto {
id: "root".to_string(),
etag: "root".to_string(),
name: "".to_string(),
path: "".to_string(),
parent_id: None,
// Synthetic root — not a real DB row.
drive_id: Uuid::nil(),
created_at: Utc::now().timestamp() as u64,
modified_at: Utc::now().timestamp() as u64,
is_root: true,
icon_class: intern_display("fas fa-folder"),
icon_special_class: intern_display("folder-icon"),
category: intern_display("Folder"),
created_by: None,
updated_by: None,
};
// Skip the 2-query quota resolution when the request's prop list
// never mentions quota (benches/QUOTA-PATH.md).
let quota = if propfind_request.wants_quota() {
state.resolve_webdav_quota(user.id, Uuid::nil()).await
} else {
None
};
return build_streaming_propfind_response(
root_folder,
None, // folder_id = None → root children (drive-root folders)
&depth_owned,
&base_href,
propfind_request,
folder_service,
file_retrieval_service,
user.id,
state.webdav_dead_props.clone(),
quota,
)
.await;
}
WebdavTarget::Scope(scope) => (scope.drive_id, scope.db_path),
};
// Single-query path resolution: folder OR file in one DB round-trip.
//
// Post-D7 the resolver is drive-scoped (not owner-scoped), so we
// explicitly `authz.require(Read, …)` on the returned resource
// before rendering the multistatus. The streaming children of a
// Folder branch are separately per-item authorised inside
// `build_streaming_propfind_response` via `_with_perms` service
// methods.
if let Some(resolver) = &state.path_resolver {
match resolver.resolve_path_in_drive(&path, drive_id).await {
Ok(ResolvedResource::Folder(folder)) => {
let folder_uuid = Uuid::parse_str(&folder.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::Folder(folder_uuid),
)
.await?;
let folder_id = folder.id.clone();
let quota = if propfind_request.wants_quota() {
state.resolve_webdav_quota(user.id, drive_id).await
} else {
None
};
return build_streaming_propfind_response(
folder,
Some(folder_id),
&depth_owned,
&base_href,
propfind_request,
folder_service,
file_retrieval_service,
user.id,
state.webdav_dead_props.clone(),
quota,
)
.await;
}
Ok(ResolvedResource::File(file)) => {
let file_uuid = Uuid::parse_str(&file.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
let dead_props = file_dead_props(&state, &file).await;
let file_href = webdav_href(&client_path);
let mut buf = Vec::with_capacity(1024);
{
let mut xml_writer = Writer::new(&mut buf);
WebDavAdapter::write_multistatus_start(&mut xml_writer)
.map_err(|e| AppError::internal_error(format!("XML write error: {}", e)))?;
WebDavAdapter::write_file_entry_with_dead_props(
&mut xml_writer,
&file,
&propfind_request,
&file_href,
&dead_props,
)
.map_err(|e| AppError::internal_error(format!("XML write error: {}", e)))?;
WebDavAdapter::write_multistatus_end(&mut xml_writer)
.map_err(|e| AppError::internal_error(format!("XML write error: {}", e)))?;
}
return Ok(Response::builder()
.status(StatusCode::MULTI_STATUS)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.body(Body::from(buf))
.unwrap());
}
Err(_) => {}
}
} else {
// Fallback: legacy double-query path when PathResolver is unavailable.
if let Ok(folder) = folder_service.get_folder_by_path(&path, drive_id).await {
let folder_uuid = Uuid::parse_str(&folder.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::Folder(folder_uuid),
)
.await?;
let folder_id = folder.id.clone();
let quota = if propfind_request.wants_quota() {
state.resolve_webdav_quota(user.id, drive_id).await
} else {
None
};
return build_streaming_propfind_response(
folder,
Some(folder_id),
&depth_owned,
&base_href,
propfind_request,
folder_service,
file_retrieval_service,
user.id,
state.webdav_dead_props.clone(),
quota,
)
.await;
}
if let Ok(file) = file_retrieval_service
.get_file_by_path(&path, drive_id)
.await
{
let file_uuid = Uuid::parse_str(&file.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
let dead_props = file_dead_props(&state, &file).await;
let file_href = webdav_href(&client_path);
let mut buf = Vec::with_capacity(1024);
{
let mut xml_writer = Writer::new(&mut buf);
WebDavAdapter::write_multistatus_start(&mut xml_writer)
.map_err(|e| AppError::internal_error(format!("XML write error: {}", e)))?;
WebDavAdapter::write_file_entry_with_dead_props(
&mut xml_writer,
&file,
&propfind_request,
&file_href,
&dead_props,
)
.map_err(|e| AppError::internal_error(format!("XML write error: {}", e)))?;
WebDavAdapter::write_multistatus_end(&mut xml_writer)
.map_err(|e| AppError::internal_error(format!("XML write error: {}", e)))?;
}
return Ok(Response::builder()
.status(StatusCode::MULTI_STATUS)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.body(Body::from(buf))
.unwrap());
}
}
Err(AppError::not_found(format!("Resource not found: {}", path)))
}
/// Builds a streaming 207 Multi-Status PROPFIND response.
///
/// The XML is written incrementally: first the folder itself, then children
/// (sub-folders and files) are fetched in batches of `PROPFIND_BATCH_SIZE`.
/// Each batch is serialised to XML and sent as a chunk, so memory stays
/// constant at O(batch_size) regardless of the total number of children.
#[allow(clippy::too_many_arguments)]
async fn build_streaming_propfind_response(
folder: FolderDto,
folder_id: Option<String>,
depth: &str,
base_href: &str,
propfind_request: PropFindRequest,
folder_service: std::sync::Arc<FolderService>,
file_retrieval_service: std::sync::Arc<FileRetrievalService>,
user_id: Uuid,
dead_props_store: Arc<DeadPropertyStore>,
quota: Option<(i64, Option<i64>)>,
) -> Result<Response<Body>, AppError> {
let depth = depth.to_string();
let base_href = base_href.to_string();
let propfind_request = Arc::new(propfind_request);
let stream = async_stream::try_stream! {
// ── XML header + <D:multistatus> + folder entry ──────────
//
// Dead-property lookups key on the resource's stable id, so we
// pass each FolderDto / FileDto to a small helper that parses
// its `id` field into a `ResourceRef` and queries the store.
// The synthetic root folder (id = "root") fails to parse and
// the helper returns an empty list — correct, since the root
// has no DB row to anchor properties on.
let folder_dead = folder_dead_props(&dead_props_store, &folder).await;
let mut buf = Vec::with_capacity(4096);
{
let mut w = Writer::new(&mut buf);
WebDavAdapter::write_multistatus_start(&mut w)
.map_err(|e| std::io::Error::other(e.to_string()))?;
WebDavAdapter::write_folder_entry_with_dead_props(&mut w, &folder, &propfind_request, &base_href, &folder_dead, quota)
.map_err(|e| std::io::Error::other(e.to_string()))?;
}
yield Bytes::from(buf);
// ── Children (only if Depth == 1) ────────────────────────
if depth == "1" {
let fid_ref = folder_id.as_deref();
// Stream sub-folders in pages (user-scoped, keyset cursor —
// O(page) per page off idx_folders_unique_name instead of the
// quadratic COUNT(*) OVER() + LIMIT/OFFSET walk; 4.5x on a
// 5k-dir parent, benches/FOLDER-KEYSET.md).
let mut after_folder: Option<String> = None;
loop {
let batch = folder_service
.list_folders_batch_with_perms(
fid_ref,
user_id,
after_folder.as_deref(),
PROPFIND_BATCH_SIZE as usize,
)
.await
.map_err(|e| std::io::Error::other(e.to_string()))?;
if batch.is_empty() {
break;
}
// ONE batched dead-props query per page instead of a
// sequential per-child round-trip — the N+1 shape cost
// 1-4.5 s of pure DB chatter on a 2000-child folder
// (measured in benches/DEAD-PROPS.md).
let subfolder_deads =
folders_dead_props_map(&dead_props_store, &batch).await;
let mut chunk = Vec::with_capacity(batch.len() * 800);
{
let mut w = Writer::new(&mut chunk);
for subfolder in batch.iter() {
let child_dead = dead_props_for(&subfolder.id, &subfolder_deads);
let href = format!(
"{}{}/",
base_href,
utf8_percent_encode(&subfolder.name, PATH_SEGMENT_ENCODE_SET)
);
WebDavAdapter::write_folder_entry_with_dead_props(&mut w, subfolder, &propfind_request, &href, child_dead, quota)
.map_err(|e| std::io::Error::other(e.to_string()))?;
}
}
let has_more = (batch.len() as i64) == PROPFIND_BATCH_SIZE;
after_folder = batch.last().map(|f| f.name.clone());
yield Bytes::from(chunk);
if !has_more {
break;
}
}
// Stream files in pages (user-scoped, keyset cursor — O(page)
// per page instead of the quadratic LIMIT/OFFSET walk).
let mut after_name: Option<String> = None;
loop {
let batch: Vec<FileDto> = file_retrieval_service
.list_files_batch_with_perms(
fid_ref,
user_id,
after_name.as_deref(),
PROPFIND_BATCH_SIZE,
)
.await
.map_err(|e| std::io::Error::other(e.to_string()))?;
if batch.is_empty() {
break;
}
let batch_len = batch.len();
// Batched: one = ANY($1) query per 500-file page.
let file_deads = files_dead_props_map(&dead_props_store, &batch).await;
let mut chunk = Vec::with_capacity(batch_len * 800);
{
let mut w = Writer::new(&mut chunk);
for file in batch.iter() {
let child_dead = dead_props_for(&file.id, &file_deads);
let href = format!(
"{}{}",
base_href,
utf8_percent_encode(&file.name, PATH_SEGMENT_ENCODE_SET)
);
WebDavAdapter::write_file_entry_with_dead_props(&mut w, file, &propfind_request, &href, child_dead)
.map_err(|e| std::io::Error::other(e.to_string()))?;
}
}
yield Bytes::from(chunk);
if (batch_len as i64) < PROPFIND_BATCH_SIZE {
break;
}
after_name = batch.last().map(|f| f.name.clone());
}
}
// ── Close </D:multistatus> ───────────────────────────────
let mut buf = Vec::with_capacity(32);
{
let mut w = Writer::new(&mut buf);
WebDavAdapter::write_multistatus_end(&mut w)
.map_err(|e| std::io::Error::other(e.to_string()))?;
}
yield Bytes::from(buf);
};
use futures::TryStreamExt;
let stream = stream
.map_err(|e: std::io::Error| -> Box<dyn std::error::Error + Send + Sync> { Box::new(e) });
Ok(Response::builder()
.status(StatusCode::MULTI_STATUS)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.body(Body::from_stream(stream))
.unwrap())
}
/**
* Handles PROPPATCH requests to set or remove resource properties.
*
* This handler processes WebDAV PROPPATCH requests according to RFC 4918,
* modifying properties of files and folders in the specified path.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The requested resource path
* @param req The HTTP request containing the PROPPATCH XML body
* @return XML response with property modification results
*/
async fn handle_proppatch(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
// Client-facing path for href construction (without home folder prefix).
let client_path = extract_webdav_path(req.uri());
// Scope the URL → (drive_id, db_path). The synthetic drive-listing
// pseudo-root has no DB row to anchor dead properties on; treat
// it as an empty target and reject the PROPPATCH itself below.
let (drive_id, path) = match resolve_webdav_scope(&state, user.id, &path).await? {
WebdavTarget::ListDrives => (Uuid::nil(), String::new()),
WebdavTarget::Scope(scope) => (scope.drive_id, scope.db_path),
};
// Active-lock guard (RFC 4918 §9.10.4): PROPPATCH writes properties,
// so a lock on the target must release them via `If:`. Captured
// before the body is consumed below so a rejected request doesn't
// even parse the XML.
let if_header_owned = req
.headers()
.get("If")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
if let Some(resp) = enforce_native_lock(
&state.webdav_lock_store,
if_header_owned.as_deref(),
&path,
None,
) {
return Ok(resp);
}
// Resolve the target resource BEFORE consuming the body. We need
// the resolved kind for two reasons:
//
// 1. The store key is the resource id (folder_id XOR file_id)
// after migration 20260830000001; we need to know which one
// to bind into `ResourceRef`.
// 2. The href shape in the multi-status response differs for
// collections vs leaves — RFC 4918 §5.2 + strict WebDAV-
// client parser rules require a trailing `/` for collection
// hrefs, and emitting `/webdav/foo` for a folder breaks
// NC-desktop / Cyberduck / other multi-status consumers.
//
// PROPPATCH on a non-existent resource returns 404. This is a
// tighter contract than the pre-rekey code, which silently
// wrote a dead-prop row keyed by the ghost path — that was a
// foot-gun, not a feature.
let (resource_ref, is_collection) = if path.is_empty() || path == "/" {
// The synthetic root has no DB row to anchor properties on.
// Treat it as a collection for href shaping; reject the
// PROPPATCH itself below so we don't fabricate a target.
(None, true)
} else {
match resolve_or_legacy(&state, &path, drive_id).await {
Some(ResolvedResource::Folder(folder)) => {
let id = Uuid::parse_str(&folder.id).map_err(|e| {
AppError::internal_error(format!("Folder id is not a UUID: {e}"))
})?;
(Some(ResourceRef::Folder(id)), true)
}
Some(ResolvedResource::File(file)) => {
let id = Uuid::parse_str(&file.id)
.map_err(|e| AppError::internal_error(format!("File id is not a UUID: {e}")))?;
(Some(ResourceRef::File(id)), false)
}
None => return Err(AppError::not_found(format!("Resource not found: {}", path))),
}
};
let resource_ref = resource_ref
.ok_or_else(|| AppError::forbidden("PROPPATCH on the WebDAV root is not supported"))?;
// AuthZ: PROPPATCH writes dead properties on the target — that's
// a mutation, requires `Update`. Without this check any caller who
// can Read (e.g. a Viewer-role grant) could persist dead-prop rows
// on someone else's file. Anti-enum-preserving: `require` maps
// denial to `NotFound`, matching the anonymous-not-found response
// above.
let resource = match resource_ref {
ResourceRef::Folder(id) => Resource::Folder(id),
ResourceRef::File(id) => Resource::File(id),
};
state
.authorization
.require(Subject::User(user.id), Permission::Update, resource)
.await?;
// Read request body (XML — bounded to 1 MB)
let body_bytes = body::to_bytes(req.into_body(), MAX_XML_BODY)
.await
.map_err(|e| {
AppError::payload_too_large(format!("PROPPATCH body too large or unreadable: {}", e))
})?;
let ops = WebDavAdapter::parse_proppatch(body_bytes.reader())
.map_err(|e| AppError::bad_request(format!("Failed to parse PROPPATCH request: {}", e)))?;
// Apply operations in document order (RFC 4918 §9.2).
let dead_props = &state.webdav_dead_props;
let mut results: Vec<(&QualifiedName, bool)> = Vec::new();
for op in &ops {
match op {
PropPatchOp::Set(pv) if is_protected_property(&pv.name) => {
results.push((&pv.name, false));
}
PropPatchOp::Remove(name) if is_protected_property(name) => {
results.push((name, false));
}
PropPatchOp::Set(pv) => {
dead_props
.set(resource_ref, pv.name.clone(), pv.value.clone())
.await
.map_err(|e| {
AppError::internal_error(format!("Failed to store dead property: {e}"))
})?;
results.push((&pv.name, true));
}
PropPatchOp::Remove(name) => {
dead_props.remove(resource_ref, name).await.map_err(|e| {
AppError::internal_error(format!("Failed to remove dead property: {e}"))
})?;
results.push((name, true));
}
}
}
// Generate response — use client-facing path so href matches the request URL.
let href = if is_collection {
webdav_collection_href(&client_path)
} else {
webdav_href(&client_path)
};
let mut response_body = Vec::new();
WebDavAdapter::generate_proppatch_response(&mut response_body, &href, &results).map_err(
|e| AppError::internal_error(format!("Failed to generate PROPPATCH response: {}", e)),
)?;
Ok(Response::builder()
.status(StatusCode::MULTI_STATUS)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.body(Body::from(response_body))
.unwrap())
}
/**
* Handles GET requests to retrieve file contents.
*
* This handler retrieves the contents of a file at the specified path.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The requested resource path
* @return HTTP response with file contents
*/
async fn handle_get(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
// Get file service from state
let file_retrieval_service = &state.applications.file_retrieval_service;
// Check if path is empty (root folder)
if path.is_empty() || path == "/" {
return Err(AppError::bad_request("Cannot GET a directory"));
}
// `drive_id` is the path-lookup scope post-D0 (paths repeat across
// drives), derived once from the caller's default drive and reused
// by both the resolver + legacy fallback.
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
let drive_id = scope.drive_id;
let path = scope.db_path;
// Resolve file — drive-scoped when PathResolver is available.
// Post-D7 both branches enforce `Read` on the resolved file
// explicitly. The download stream call below also passes
// `caller_id`, so `get_file_stream_with_perms` re-verifies as
// defence-in-depth.
//
// (Fix, 2026-07-02: the legacy fallback branch previously used
// `Permission::Update`, a stale mapping from the retired
// `assert_owner` helper. That would have locked Viewers out of
// downloads once shared drives were exposed via WebDAV. Both
// branches now share the correct `Read` permission — see the
// post-D7 second AuthZ audit memo.)
let file = if let Some(resolver) = &state.path_resolver {
match resolver.resolve_path_in_drive(&path, drive_id).await {
Ok(ResolvedResource::File(f)) => {
let file_uuid = Uuid::parse_str(&f.id)
.map_err(|_| AppError::not_found(format!("File not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
f
}
Ok(ResolvedResource::Folder(_)) => {
return Err(AppError::bad_request("Cannot GET a directory"));
}
Err(_) => {
return Err(AppError::not_found(format!("File not found: {}", path)));
}
}
} else {
// Legacy fallback — fetch + AuthZ check.
let f = file_retrieval_service
.get_file_by_path(&path, drive_id)
.await
.map_err(|_e| AppError::not_found(format!("File not found: {}", path)))?;
let file_uuid = Uuid::parse_str(&f.id)
.map_err(|_| AppError::not_found(format!("File not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
f
};
let etag = format!("\"{}\"", file.etag);
// Conditional GET — clients revalidating a cached copy get a 304
// instead of the full body.
if let Some(resp) = not_modified_response(req.headers(), &etag) {
return Ok(resp);
}
// Recent recording deliberately does NOT fire here: native WebDAV
// is overwhelmingly a sync-engine surface (rclone, davfs2, Finder
// mounts) and a first descent would push every synced file into
// Recent, drowning out the SPA's "what I actually opened" signal.
// See memory note `project_recent_session_intent.md` — the planned
// session-intent gate (interactive JWT vs app-password) will turn
// this back on for the rare human-driven DAV access.
// Range Requests — mount-style clients (rclone, davfs2, Finder) read
// by ranges; serve 206/416 instead of re-sending the whole file on
// every seek or resume.
if let Some(resp) = range_response(req.headers(), &file, &etag, file_retrieval_service).await {
return Ok(resp);
}
// Stream file content — constant ~64 KB memory regardless of file size
let stream = file_retrieval_service
.get_file_stream(&file.id)
.await
.map_err(|e| AppError::internal_error(format!("Failed to stream file: {}", e)))?;
// Build streaming response using Content-Length from metadata
Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, &*file.mime_type)
.header(header::CONTENT_LENGTH, file.size)
.header(header::ETAG, etag)
.header(header::ACCEPT_RANGES, "bytes")
.header(
header::LAST_MODIFIED,
chrono::DateTime::<Utc>::from_timestamp(file.created_at as i64, 0)
.unwrap_or_else(Utc::now)
.to_rfc2822(),
)
.body(Body::from_stream(Box::into_pin(stream)))
.unwrap())
}
/**
* Handles HEAD requests — same as GET but returns only headers, no body.
*/
async fn handle_head(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
let file_retrieval_service = &state.applications.file_retrieval_service;
let folder_service = &state.applications.folder_service;
if path.is_empty() || path == "/" {
// Root folder — return collection headers
return Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "httpd/unix-directory")
.header(header::CONTENT_LENGTH, 0)
.body(Body::empty())
.unwrap());
}
// `drive_id` is the path-lookup scope post-D0 — derive once and
// reuse across the resolver + fallback branches below.
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
let drive_id = scope.drive_id;
let path = scope.db_path;
// Single-query path resolution (drive-scoped). Both branches
// enforce `Read` on the resolved resource before emitting the
// metadata response — same permission as the legacy fallback below.
if let Some(resolver) = &state.path_resolver {
match resolver.resolve_path_in_drive(&path, drive_id).await {
Ok(ResolvedResource::Folder(folder)) => {
let folder_uuid = Uuid::parse_str(&folder.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::Folder(folder_uuid),
)
.await?;
return Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "httpd/unix-directory")
.header(header::CONTENT_LENGTH, 0)
.header(header::ETAG, format!("\"{}\"", folder.etag))
.body(Body::empty())
.unwrap());
}
Ok(ResolvedResource::File(file)) => {
let file_uuid = Uuid::parse_str(&file.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
return Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, &*file.mime_type)
.header(header::CONTENT_LENGTH, file.size)
.header(header::ETAG, format!("\"{}\"", file.etag))
.header(
header::LAST_MODIFIED,
chrono::DateTime::<Utc>::from_timestamp(file.created_at as i64, 0)
.unwrap_or_else(Utc::now)
.to_rfc2822(),
)
.body(Body::empty())
.unwrap());
}
Err(_) => return Err(AppError::not_found(format!("Resource not found: {}", path))),
}
}
// Fallback: legacy double-query path (with ownership check).
if let Ok(folder) = folder_service.get_folder_by_path(&path, drive_id).await {
let folder_uuid = Uuid::parse_str(&folder.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::Folder(folder_uuid),
)
.await?;
return Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "httpd/unix-directory")
.header(header::CONTENT_LENGTH, 0)
.header(header::ETAG, format!("\"{}\"", folder.etag))
.body(Body::empty())
.unwrap());
}
// Try as file — use metadata only, never load content for HEAD
let file = file_retrieval_service
.get_file_by_path(&path, drive_id)
.await
.map_err(|_e| AppError::not_found(format!("Resource not found: {}", path)))?;
let file_uuid = Uuid::parse_str(&file.id)
.map_err(|_| AppError::not_found(format!("Resource not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, &*file.mime_type)
.header(header::CONTENT_LENGTH, file.size)
.header(header::ETAG, format!("\"{}\"", file.etag))
.header(
header::LAST_MODIFIED,
chrono::DateTime::<Utc>::from_timestamp(file.created_at as i64, 0)
.unwrap_or_else(Utc::now)
.to_rfc2822(),
)
.body(Body::empty())
.unwrap())
}
/// Resolve `path` to a user-owned resource using the optimized
/// PathResolver first, falling back to the legacy `get_folder_by_path` /
/// `get_file_by_path` lookups (the same ones GET uses) when the
/// optimized resolver returns NotFound.
///
/// **Why the fallback exists**: the optimized resolver and the read-side
/// `get_*_by_path` repositories don't always agree on what a "path"
/// looks like. The drive-refactor migration rewrote the `path` column
/// to strip the `My Folder - <user>/` prefix that the WebDAV dispatcher
/// (`resolve_webdav_path`) still prepends — leaving an inconsistency
/// where files PUT through the WebDAV surface stay reachable by GET
/// (legacy lookup) but invisible to the optimized resolver (strict
/// path-match). MOVE / DELETE / COPY previously 404'd on every
/// root-level file because they only used the optimized resolver.
///
/// Cross-drive isolation is enforced in both branches: the optimized
/// resolver scopes by `drive_id`; the fallback derives the caller's
/// default `drive_id` and `get_folder_by_path` / `get_file_by_path`
/// scope by that. Callsites in the fallback additionally run
/// `authz.require(Permission::…, Resource::…)` per operation, matching
/// the modern AuthZ path.
async fn resolve_or_legacy(
state: &Arc<AppState>,
path: &str,
drive_id: Uuid,
) -> Option<ResolvedResource> {
// `drive_id` is now passed in by the caller (already computed by
// `resolve_webdav_scope`) so the fallback probes stay consistent
// with the primary resolver — cross-drive URLs no longer silently
// fall back to the caller's default drive.
if let Some(resolver) = &state.path_resolver
&& let Ok(r) = resolver.resolve_path_in_drive(path, drive_id).await
{
return Some(r);
}
let folder_service = &state.applications.folder_service;
if let Ok(folder) = folder_service.get_folder_by_path(path, drive_id).await {
return Some(ResolvedResource::Folder(folder));
}
let file_retrieval = &state.applications.file_retrieval_service;
if let Ok(file) = file_retrieval.get_file_by_path(path, drive_id).await {
return Some(ResolvedResource::File(file));
}
None
}
/// Fetch a file's dead properties for a PROPFIND response.
///
/// Lenient on every failure mode: malformed id, DB error → empty list.
/// PROPFIND must still emit the resource's live properties even when
/// the dead-prop lookup is broken; surfacing a 500 here would mask the
/// resource entirely from sync clients. The legacy path-keyed lookup
/// behaved the same way (`.unwrap_or_default()`); we preserve it.
///
/// `pub(crate)` — also reused by the NextCloud-compatible PROPFIND
/// handler (`interfaces::nextcloud::webdav_handler`), which needs the
/// same lenient fetch for its own response writers.
pub(crate) async fn file_dead_props(
state: &Arc<AppState>,
file: &FileDto,
) -> Vec<(QualifiedName, Option<String>)> {
let Ok(file_id) = Uuid::parse_str(&file.id) else {
return Vec::new();
};
state
.webdav_dead_props
.get_all(ResourceRef::File(file_id))
.await
.unwrap_or_default()
}
/// Same shape as `file_dead_props` but for folder rows. Used by the
/// streaming PROPFIND walker (and, via `pub(crate)`, by the NextCloud
/// handler's own streaming walker).
pub(crate) async fn folder_dead_props(
store: &DeadPropertyStore,
folder: &FolderDto,
) -> Vec<(QualifiedName, Option<String>)> {
let Ok(folder_id) = Uuid::parse_str(&folder.id) else {
return Vec::new();
};
store
.get_all(ResourceRef::Folder(folder_id))
.await
.unwrap_or_default()
}
/// Batched dead-props fetch for a whole PROPFIND page of files: ONE
/// `file_id = ANY($1)` round-trip instead of one query per child (the old
/// per-child `streamed_file_dead_props` loop cost seconds on large folders —
/// benches/DEAD-PROPS.md). Same leniency as the single-resource helpers:
/// any failure → empty map, so the PROPFIND still emits live properties.
pub(crate) async fn files_dead_props_map(
store: &DeadPropertyStore,
files: &[FileDto],
) -> HashMap<Uuid, Vec<(QualifiedName, Option<String>)>> {
let ids: Vec<Uuid> = files
.iter()
.filter_map(|f| Uuid::parse_str(&f.id).ok())
.collect();
store.get_all_for_files(&ids).await.unwrap_or_default()
}
/// Folder-page variant of [`files_dead_props_map`].
pub(crate) async fn folders_dead_props_map(
store: &DeadPropertyStore,
folders: &[FolderDto],
) -> HashMap<Uuid, Vec<(QualifiedName, Option<String>)>> {
let ids: Vec<Uuid> = folders
.iter()
.filter_map(|f| Uuid::parse_str(&f.id).ok())
.collect();
store.get_all_for_folders(&ids).await.unwrap_or_default()
}
/// Looks up one resource's dead props in a batched map (resources with no
/// dead properties are absent from the map → empty slice).
pub(crate) fn dead_props_for<'a>(
id: &str,
map: &'a HashMap<Uuid, Vec<(QualifiedName, Option<String>)>>,
) -> &'a [(QualifiedName, Option<String>)] {
Uuid::parse_str(id)
.ok()
.and_then(|u| map.get(&u))
.map(|v| v.as_slice())
.unwrap_or(&[])
}
/// A single condition inside a `List` of the WebDAV `If:` header
/// (RFC 4918 §10.4.2 grammar):
/// `Condition = ["Not"] (State-token | "[" entity-tag "]")`.
#[derive(Debug, Clone, PartialEq)]
enum IfCondition {
StateToken { negated: bool, token: String },
EntityTag { negated: bool, etag: String },
}
/// A parsed `If:` header — outer Vec is OR of `List`s, inner Vec is AND
/// of `Condition`s (RFC 4918 §10.4.2). Tagged-list `Resource` URIs are
/// accepted by the parser but their scoping is ignored — every List is
/// treated as applying to the current request URI. That's a
/// simplification adequate for litmus and NC clients; a real Tagged-list
/// implementation would map each List to its preceding Resource.
type IfLists = Vec<Vec<IfCondition>>;
/// Best-effort parser for RFC 4918 §10.4.2 `If:` headers. Malformed
/// input yields whatever Lists could be recovered; downstream evaluation
/// treats an empty result as "no header".
fn parse_if_header(header: &str) -> IfLists {
let mut lists: IfLists = Vec::new();
let bytes = header.as_bytes();
let n = bytes.len();
let mut i = 0;
while i < n {
match bytes[i] {
b' ' | b'\t' | b'\r' | b'\n' => i += 1,
b'<' => {
// Tagged-list Resource prefix — skip past the closing '>'.
i += 1;
while i < n && bytes[i] != b'>' {
i += 1;
}
if i < n {
i += 1;
}
}
b'(' => {
i += 1;
let mut list: Vec<IfCondition> = Vec::new();
loop {
while i < n && matches!(bytes[i], b' ' | b'\t' | b'\r' | b'\n') {
i += 1;
}
if i >= n {
break;
}
if bytes[i] == b')' {
i += 1;
break;
}
// Optional "Not" prefix.
let mut negated = false;
if i + 3 <= n
&& bytes[i..i + 3].eq_ignore_ascii_case(b"Not")
&& (i + 3 == n
|| matches!(bytes[i + 3], b' ' | b'\t' | b'<' | b'[' | b'\r' | b'\n'))
{
negated = true;
i += 3;
while i < n && matches!(bytes[i], b' ' | b'\t' | b'\r' | b'\n') {
i += 1;
}
}
if i >= n {
break;
}
match bytes[i] {
b'<' => {
i += 1;
let start = i;
while i < n && bytes[i] != b'>' {
i += 1;
}
let token = std::str::from_utf8(&bytes[start..i])
.unwrap_or_default()
.to_string();
if i < n {
i += 1;
}
list.push(IfCondition::StateToken { negated, token });
}
b'[' => {
i += 1;
let start = i;
while i < n && bytes[i] != b']' {
i += 1;
}
let etag = std::str::from_utf8(&bytes[start..i])
.unwrap_or_default()
.trim()
.trim_matches('"')
.to_string();
if i < n {
i += 1;
}
list.push(IfCondition::EntityTag { negated, etag });
}
_ => {
// Malformed — skip a byte and continue trying.
i += 1;
}
}
}
if !list.is_empty() {
lists.push(list);
}
}
_ => i += 1,
}
}
lists
}
/// Evaluate a parsed `If:` header against the current resource state.
///
/// Returns `(header_true, submitted_active_lock)`:
/// - `header_true` — at least one `List` (AND of Conditions) evaluates
/// true, so the OR-across-Lists holds and the precondition passes.
/// - `submitted_active_lock` — some non-negated `State-token` Condition
/// presented the resource's actual lock token. Used to distinguish
/// 412 (precondition failed) from 423 (locked resource, no matching
/// token submitted) per RFC 4918 §10.4.9 / §6.6.
///
/// Empty `lists` (parse failed / header absent) → treated as
/// vacuously true. Callers handle the "no If: header on a locked
/// resource" case separately.
fn evaluate_if_header(
lists: &IfLists,
active_lock_token: Option<&str>,
current_etag: Option<&str>,
) -> (bool, bool) {
if lists.is_empty() {
return (true, false);
}
// First pass — scan every non-negated State-token so we can flag
// "the caller did submit the lock" even for Lists that fail on other
// Conditions. This drives the 412-vs-423 discrimination downstream.
let mut submitted_active_lock = false;
if let Some(active) = active_lock_token {
for list in lists {
for cond in list {
if let IfCondition::StateToken {
negated: false,
token,
} = cond
&& token == active
{
submitted_active_lock = true;
}
}
}
}
// Second pass — AND within each List, OR across Lists.
let any_list_true = lists.iter().any(|list| {
list.iter().all(|cond| {
let (negated, natural) = match cond {
IfCondition::StateToken { negated, token } => {
let is_active = active_lock_token == Some(token.as_str());
(*negated, is_active)
}
IfCondition::EntityTag {
negated,
etag: cond_etag,
} => {
let matches = current_etag
.map(|c| c.trim().trim_matches('"') == cond_etag.trim().trim_matches('"'))
.unwrap_or(false);
(*negated, matches)
}
};
natural ^ negated
})
});
(any_list_true, submitted_active_lock)
}
/// RFC 4918 §9.10.4 / §10.4 — evaluate the caller's `If:` header
/// against the resource's active lock and current ETag.
///
/// Returns `Some(Response)` when the request must be rejected —
/// **412 Precondition Failed** when the header's conditions can't be
/// satisfied by the current state, **423 Locked** when the resource is
/// locked and no submitted alternative includes its lock token (per
/// §10.4.9 / §6.6). Returns `None` when the request may proceed.
///
/// `current_etag` is the resource's ETag (raw, unquoted) if it exists;
/// pass `None` for a not-yet-existing target. Callers that don't have
/// the resolved etag at the call site pass `None` — any `[etag]`
/// condition then evaluates false, which is the correct fail-closed
/// behaviour for the "resource doesn't exist yet" case.
///
/// Shared by `handle_put`, `handle_delete`, `handle_move`,
/// `handle_copy`, and `handle_proppatch`.
fn enforce_native_lock(
lock_store: &crate::infrastructure::services::webdav_lock_service::WebDavLockStore,
if_header: Option<&str>,
path: &str,
current_etag: Option<&str>,
) -> Option<Response<Body>> {
// Check the exact path, then walk up parent collections for depth-infinity
// locks (RFC 4918 §6.1: a lock on a collection with Depth: infinity also
// covers all descendant members).
let entry = lock_store.get_by_path(path).or_else(|| {
let mut p = path;
loop {
let idx = p.rfind('/')?;
p = &p[..idx];
if p.is_empty() {
return None;
}
if let Some(e) = lock_store.get_by_path(p)
&& e.info.depth.eq_ignore_ascii_case("infinity")
{
return Some(e);
}
}
});
let active_lock_token = entry.as_ref().map(|e| e.info.token.as_str());
let locked = entry.is_some();
let lists = if_header.map(parse_if_header).unwrap_or_default();
// No parseable If: header at all.
if lists.is_empty() {
// Locked without an If: header → 423 Locked (§9.10.4).
if locked {
return Some(
Response::builder()
.status(StatusCode::LOCKED)
.body(Body::empty())
.unwrap(),
);
}
return None;
}
let (header_true, submitted_active_lock) =
evaluate_if_header(&lists, active_lock_token, current_etag);
if header_true {
// Header preconditions satisfied. If the resource is locked but
// the satisfying List did so via etag / Not-token alone (never
// presenting the real lock token), still return 423 — §10.4.9's
// "matching lock token" rule.
if locked && !submitted_active_lock {
return Some(
Response::builder()
.status(StatusCode::LOCKED)
.body(Body::empty())
.unwrap(),
);
}
return None;
}
// Header evaluates false. 423 if the resource is locked and the
// caller never presented its lock token; otherwise 412.
if locked && !submitted_active_lock {
return Some(
Response::builder()
.status(StatusCode::LOCKED)
.body(Body::empty())
.unwrap(),
);
}
Some(
Response::builder()
.status(StatusCode::PRECONDITION_FAILED)
.body(Body::empty())
.unwrap(),
)
}
/**
* Handles PUT requests to create or update files.
*
* **Streaming implementation**: the request body is streamed straight into
* the CDC chunk store (FastCDC + BLAKE3 while the bytes arrive — no spool
* file, no re-read; peak RAM is bounded regardless of file size), then the
* file row is atomically swapped onto the ingested blob via
* `update_file_streaming`.
*
* @param state The application state containing service dependencies
* @param path The requested resource path
* @param req The HTTP request containing the file contents
* @return HTTP response indicating success
*/
async fn handle_put(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
use crate::interfaces::upload_ingest;
let user = extract_user(&req)?;
let file_upload_service = &state.applications.file_upload_service;
if path.is_empty() || path == "/" {
return Err(AppError::bad_request("Cannot PUT to root folder"));
}
// RFC 4918 §9.7.1: a server MUST NOT partially CREATE or UPDATE a resource
// based on a PUT request containing a Content-Range header.
if req.headers().contains_key(header::CONTENT_RANGE) {
return Err(AppError::bad_request(
"PUT with Content-Range is not allowed (RFC 4918 §9.7.1)",
));
}
// Extract all headers before consuming `req` into the body stream.
let if_header_owned = req
.headers()
.get("If")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
let if_none_match = req
.headers()
.get(header::IF_NONE_MATCH)
.and_then(|v| v.to_str().ok())
.map(|s| s.trim().to_string());
let if_match = req
.headers()
.get(header::IF_MATCH)
.and_then(|v| v.to_str().ok())
.map(|s| s.trim().to_string());
let content_type = req
.headers()
.get(header::CONTENT_TYPE)
.and_then(|v| v.to_str().ok())
.unwrap_or("application/octet-stream")
.to_string();
let max_upload = state.core.config.storage.direct_put_max_bytes;
// `drive_id` is the path-lookup scope post-D0 — resolve once from
// the caller's default drive, reused by the resolver checks below
// and by the atomic-store call further down.
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
let drive_id = scope.drive_id;
let path = scope.db_path;
// ── Existence check ───────────────────────────────────────────────
// Resolves to: File(existing), Folder(wrong), or Err(new file).
// Sets `file_existed` for 201 vs 204 and `current_etag` for If-Match.
//
// Post-D7 the resolver is drive-scoped, not owner-scoped, so we
// explicitly `authz.require(Read, …)` on every returned resource
// before consuming it. The actual overwrite is authorised as
// `Update` inside `update_file_streaming`; this Read check is the
// defence-in-depth existence-proof (see project_webdav_authz_second_audit).
let mut file_existed = false;
let mut current_etag: Option<String> = None;
if let Some(resolver) = &state.path_resolver {
match resolver.resolve_path_in_drive(&path, drive_id).await {
Ok(ResolvedResource::File(f)) => {
let file_uuid = Uuid::parse_str(&f.id)
.map_err(|_| AppError::not_found(format!("File not found: {}", path)))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::File(file_uuid),
)
.await?;
file_existed = true;
current_etag = Some(f.etag.clone());
}
Ok(ResolvedResource::Folder(_)) => {
return Err(AppError::bad_request("Cannot PUT to a directory"));
}
Err(_) => {
// File doesn't exist — verify parent. RFC 4918 §9.7.1: missing
// parent MUST produce 409 Conflict, not 404.
let parent_path = path.rfind('/').map(|i| &path[..i]).unwrap_or("");
if !parent_path.is_empty() {
let parent = resolver
.resolve_path_in_drive(parent_path, drive_id)
.await
.map_err(|_| {
AppError::conflict(format!("Parent folder not found: {}", parent_path))
})?;
if let ResolvedResource::Folder(folder) = parent {
let folder_uuid = Uuid::parse_str(&folder.id).map_err(|_| {
AppError::conflict(format!("Parent folder not found: {}", parent_path))
})?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::Folder(folder_uuid),
)
.await
.map_err(|_| {
AppError::conflict(format!(
"Parent folder not found: {}",
parent_path
))
})?;
} else {
return Err(AppError::conflict(format!(
"Parent path is a file, not a collection: {}",
parent_path
)));
}
}
}
}
}
// ── Active-lock guard + RFC 4918 §10.4 If: evaluation ─────────────
// Deferred until after the existence check so `current_etag` is
// available to the If: header's `[etag]` conditions. `handle_put`
// is the only site where litmus exercises the full §10.4 grammar
// (locks/fail_complex_cond_put); other handlers pass `None` and
// fall back to the existence-only semantics.
if let Some(resp) = enforce_native_lock(
&state.webdav_lock_store,
if_header_owned.as_deref(),
&path,
current_etag.as_deref(),
) {
return Ok(resp);
}
// ── RFC 7232 conditional preconditions ────────────────────────────
// Evaluated before ingesting the body to save bandwidth on doomed requests.
if let Some(ref inm) = if_none_match {
// If-None-Match: * → fail if resource exists (prevent overwrite)
if inm == "*" && file_existed {
return Err(AppError::precondition_failed(
"If-None-Match: * — resource already exists",
));
}
}
if let Some(ref im) = if_match {
if im == "*" {
// If-Match: * → fail if resource does not exist
if !file_existed {
return Err(AppError::precondition_failed(
"If-Match: * — resource does not exist",
));
}
} else {
// If-Match: <etag> → strong comparison against current ETag
match &current_etag {
None => {
return Err(AppError::precondition_failed(
"If-Match — resource does not exist",
));
}
Some(etag) => {
let client_tag = im.trim_matches('"');
let server_tag = etag.trim_matches('"');
if client_tag != server_tag {
return Err(AppError::precondition_failed("If-Match — ETag mismatch"));
}
}
}
}
}
// ── Streaming ingest ──────────────────────────────────────────────
let filename = crate::common::mime_detect::filename_from_path(&path).to_string();
let ingested = upload_ingest::ingest_body_to_cas(
req.into_body(),
&state.core.dedup_service,
&filename,
&content_type,
max_upload,
)
.await?;
// ── Quota enforcement ─────────────────────────────────────────────
if let Some(storage_svc) = state.storage_usage_service.as_ref()
&& let Err(err) = storage_svc
.check_storage_quota(user.id, ingested.size)
.await
{
upload_ingest::discard_ingested(&state.core.dedup_service, &ingested).await;
tracing::warn!(
"⛔ WEBDAV PUT REJECTED (quota): user={}, file={}, size={}",
user.id,
path,
ingested.size
);
return Err(AppError::new(
StatusCode::INSUFFICIENT_STORAGE,
err.message,
"QuotaExceeded",
));
}
// ── Atomic store ──────────────────────────────────────────────────
// `drive_id` was resolved above (existence-check block) and is
// reused here — the same drive that scoped the resolver scopes the
// write. `update_file_streaming` enforces `Permission::Update`
// internally via its `_with_perms` shape.
let content_type = ingested.content_type.clone();
let result = file_upload_service
.update_file_streaming_with_perms(
&path,
drive_id,
ingested.stored(),
&content_type,
None,
user.id,
)
.await;
match result {
Ok(file_dto) => {
// RFC 4918 §9.7.1: 201 Created for new resources, 204 No Content
// for overwrites. Always include ETag so clients can use it for
// subsequent conditional requests without a round-trip HEAD.
let status = if file_existed {
StatusCode::NO_CONTENT
} else {
StatusCode::CREATED
};
Ok(Response::builder()
.status(status)
.header(header::ETAG, &file_dto.etag)
.body(Body::empty())
.unwrap())
}
// Propagate DomainError kinds — NotFound (authz denial via
// `require_target_folder_perm`), Conflict (missing parent) etc.
// Wrapping everything as InternalError swallowed 404s from the
// service's own AuthZ, surfacing them to callers as 500.
Err(e) => Err(AppError::from(e)),
}
}
/**
* Handles MKCOL requests to create folders.
*
* This handler creates a new folder at the specified path.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The requested resource path
* @return HTTP response indicating success
*/
async fn handle_mkcol(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
let folder_service = &state.applications.folder_service;
// Bare `/webdav/` handling: routed through `resolve_webdav_scope_or_405`
// below. In the empty-drive-path config that resolves to the
// drive-listing pseudo-root (405 method-not-allowed); in the
// default `@drive` config it resolves to the default drive's root
// folder (which already exists — the existence probe at
// `exists_in_drive` further down returns 405 per RFC 4918 §9.3.1).
// Both configs end at 405 without a special-case.
// Extract content-type before consuming the body.
let req_content_type = req
.headers()
.get(header::CONTENT_TYPE)
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
// RFC 4918 §9.3.1: MKCOL body MUST be empty. A non-empty body with a
// recognised XML content-type is 400 Bad Request (malformed MKCOL body);
// a non-empty body with an unrecognised content-type is 415 Unsupported
// Media Type. We read up to MAX_MKCOL_BODY bytes to distinguish the two.
let body_bytes = {
let body = req.into_body();
body::to_bytes(body, MAX_MKCOL_BODY)
.await
.map_err(|e| AppError::payload_too_large(format!("MKCOL body too large: {}", e)))?
};
if !body_bytes.is_empty() {
// A body whose content-type looks like XML → 400 (client sent a MKCOL
// extended request we don't support); anything else → 415.
let ct = req_content_type.as_deref().unwrap_or("");
if ct.contains("xml") {
return Err(AppError::bad_request(
"MKCOL with XML body is not supported",
));
}
return Err(AppError::unsupported_media_type(
"MKCOL request body must be empty",
));
}
// RFC 4918 §9.3.1: MKCOL on an existing URL MUST return 405.
// RFC 4918 §9.3.1: MKCOL without an existing parent MUST return 409.
// This handler only creates a single collection (the last path segment).
// It does NOT auto-create intermediate ancestors ("mkdir -p" semantics
// violate the RFC and were causing the test failures).
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
let drive_id = scope.drive_id;
let path = scope.db_path;
let segments: Vec<&str> = path.split('/').filter(|s| !s.is_empty()).collect();
if segments.is_empty() {
return Err(AppError::conflict("Root folder already exists"));
}
// Check whether the target itself already exists (file or folder → 405).
// `exists_in_drive` is an existence-only probe (returns a bool), so no
// per-resource authz is applicable here — the create call below is
// authorised via `Permission::Create` on the parent.
if let Some(resolver) = &state.path_resolver {
if resolver
.exists_in_drive(&path, drive_id)
.await
.unwrap_or(false)
{
return Err(AppError::new(
StatusCode::METHOD_NOT_ALLOWED,
"Collection already exists",
"AlreadyExists",
));
}
} else if folder_service
.get_folder_by_path(&path, drive_id)
.await
.is_ok()
{
return Err(AppError::new(
StatusCode::METHOD_NOT_ALLOWED,
"Collection already exists",
"AlreadyExists",
));
}
// Resolve the parent path. RFC 4918 §9.3.1: if the parent does not
// exist, return 409 Conflict. If the parent exists but is a file, also
// return 409 (cannot create a collection inside a file).
let new_segment = *segments.last().unwrap();
let parent_segments = &segments[..segments.len() - 1];
let parent_id = if parent_segments.is_empty() {
// Top-level creation — no parent required; the root folder acts as parent.
None
} else {
let parent_path = parent_segments.join("/");
// Parent must be a folder, not a file. Post-D7 the resolver is
// drive-scoped so we explicitly `authz.require(Read, Folder)` on the
// returned parent — the actual create then runs under
// `Permission::Create` on the same folder inside `create_folder_with_perms`.
if let Some(resolver) = &state.path_resolver {
match resolver.resolve_path_in_drive(&parent_path, drive_id).await {
Ok(ResolvedResource::Folder(f)) => {
let folder_uuid = Uuid::parse_str(&f.id).map_err(|_| {
AppError::conflict(format!("Parent folder not found: {}", parent_path))
})?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Read,
Resource::Folder(folder_uuid),
)
.await
.map_err(|_| {
AppError::conflict(format!("Parent folder not found: {}", parent_path))
})?;
Some(f.id)
}
Ok(ResolvedResource::File(_)) => {
return Err(AppError::conflict(
"Parent path is a file, not a collection",
));
}
Err(_) => {
return Err(AppError::conflict(format!(
"Parent folder not found: {}",
parent_path
)));
}
}
} else {
match folder_service
.get_folder_by_path(&parent_path, drive_id)
.await
{
Ok(f) => Some(f.id),
Err(_) => {
return Err(AppError::conflict(format!(
"Parent folder not found: {}",
parent_path
)));
}
}
}
};
let create_dto = crate::application::dtos::folder_dto::CreateFolderDto {
name: new_segment.to_string(),
parent_id,
};
folder_service
.create_folder_with_perms(create_dto, user.id)
.await
.map_err(AppError::from)?;
Ok(Response::builder()
.status(StatusCode::CREATED)
.body(Body::empty())
.unwrap())
}
/**
* Handles DELETE requests to remove files or folders.
*
* This handler deletes a file or folder at the specified path.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The requested resource path
* @return HTTP response indicating success
*/
async fn handle_delete(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
// Refuse DELETE on the pseudo-root before any scope work — bare
// `/webdav/` (empty-config drive listing OR classic-config default
// drive root) can't be deleted from the WebDAV surface.
if path.is_empty() || path == "/" {
return Err(AppError::forbidden("Cannot delete root folder"));
}
// Scope resolution BEFORE the lock guard so `enforce_native_lock`
// keys on the same DB path that `handle_lock` used when it
// registered the lock. Doing it in the reverse order (as before
// the drive-scope refactor) silently defeated every LOCK because
// the lock-store key mismatch made every DELETE look unlocked.
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
let drive_id = scope.drive_id;
let path = scope.db_path;
// Active-lock guard (RFC 4918 §9.10.4).
let if_header_owned = req
.headers()
.get("If")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
if let Some(resp) = enforce_native_lock(
&state.webdav_lock_store,
if_header_owned.as_deref(),
&path,
None,
) {
return Ok(resp);
}
// Get services from state
let file_retrieval_service = &state.applications.file_retrieval_service;
let file_management_service = &state.applications.file_management_service;
let folder_service = &state.applications.folder_service;
// Resolve via optimized resolver, falling back to the legacy
// double-query lookup (the one GET uses). Necessary because the
// optimized resolver and the read repositories disagree on path
// shape for some files; see `resolve_or_legacy` docs.
let _ = file_retrieval_service; // present for legacy fallback if needed elsewhere
// AuthZ audit #2 (2026-07-12): route service errors through
// `AppError::from` so authz denials from `_with_perms` surface as
// 404 (the anti-enum shape). The prior `map_err(|e| internal_error…)`
// collapsed every error — including the `NotFound` that
// `authz.require` returns on denial — into HTTP 500, giving a
// reliable "exists-but-denied" vs "missing" oracle to a probing
// caller. Also preserves `QuotaExceeded → 507`,
// `AlreadyExists → 409`, `InvalidInput → 400` shapes surfacing
// through the standard error mapping.
match resolve_or_legacy(&state, &path, drive_id).await {
Some(ResolvedResource::Folder(folder)) => {
folder_service
.delete_folder_with_perms(&folder.id, user.id)
.await
.map_err(AppError::from)?;
}
Some(ResolvedResource::File(file)) => {
file_management_service
.delete_file_with_perms(&file.id, user.id)
.await
.map_err(AppError::from)?;
}
None => return Err(AppError::not_found(format!("Resource not found: {}", path))),
}
// Dead-property rows attached to the deleted file/folder are reaped
// automatically by `storage.webdav_dead_properties.{folder,file}_id`
// ON DELETE CASCADE (migration 20260830000001). Same guarantee
// applies to every other delete code path — REST `DELETE
// /api/files/{id}`, bulk delete, trash empty, folder cascade —
// without any service-layer call. No explicit cleanup needed here.
Ok(Response::builder()
.status(StatusCode::NO_CONTENT)
.body(Body::empty())
.unwrap())
}
/**
* Handles MOVE requests to rename or relocate files or folders.
*
* This handler moves a file or folder from one path to another.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The source resource path
* @param req The HTTP request containing the destination path
* @return HTTP response indicating success
*/
async fn handle_move(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
let source_path = path;
// Captured up front so a rejected MOVE doesn't run any DB work.
let if_header_owned = req
.headers()
.get("If")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
// Get destination from Destination header
let destination = req
.headers()
.get("Destination")
.and_then(|v| v.to_str().ok())
.ok_or_else(|| AppError::bad_request("Destination header required"))?
.to_string();
// Overwrite header (RFC 4918 §9.8.4): T = overwrite, F = fail if exists
let overwrite = req
.headers()
.get("Overwrite")
.and_then(|v| v.to_str().ok())
.unwrap_or("T")
!= "F";
// Extract destination path from URL and percent-decode it
let destination_path = if let Some(webdav_prefix) = destination.find("/webdav/") {
let after_prefix = &destination[webdav_prefix + 8..];
let trimmed = after_prefix.trim_end_matches('/');
percent_decode_str(trimmed).decode_utf8_lossy().into_owned()
} else {
return Err(AppError::bad_request("Invalid destination URL"));
};
// SECURITY: reject path-traversal in destination
reject_path_traversal(&destination_path)?;
// Resolve BOTH source and destination scope. Cross-drive MOVE is
// permitted: the underlying service methods
// (`move_folder_with_perms` / `move_file_with_perms`) support it
// natively — they enforce the D5 `forbid_cross_drive_move` policy
// per drive and emit a D6 `resource.moved_between_drives` audit
// line when the move crosses a boundary. Downstream probes that
// walk `storage.{folders,files}.path` need the RIGHT drive scope
// for each side; we thread `src_drive_id` for source probes and
// `dst_drive_id` for destination probes.
let src_scope = resolve_webdav_scope_or_405(&state, user.id, &source_path).await?;
let dst_scope = resolve_webdav_scope_or_405(&state, user.id, &destination_path).await?;
let src_drive_id = src_scope.drive_id;
let dst_drive_id = dst_scope.drive_id;
let source_path = src_scope.db_path;
let path = source_path.clone();
let destination_path = dst_scope.db_path;
// RFC 4918 §9.9.3: MOVE to self MUST return 403 Forbidden.
if destination_path == path {
return Err(AppError::forbidden("Cannot MOVE a resource to itself"));
}
// Active-lock guard on the SOURCE (RFC 4918 §9.10.4): the move
// removes the source resource, which counts as modifying it. The
// guard runs AFTER scope resolution so its lookup keys on the DB
// path — same key `handle_lock` used when it registered the lock.
if let Some(resp) = enforce_native_lock(
&state.webdav_lock_store,
if_header_owned.as_deref(),
&source_path,
None,
) {
return Ok(resp);
}
// Destination lock guard: MOVE also creates/replaces a resource at
// the destination. If that path is locked, the same If: header must
// satisfy it.
if let Some(resp) = enforce_native_lock(
&state.webdav_lock_store,
if_header_owned.as_deref(),
&destination_path,
None,
) {
return Ok(resp);
}
let file_retrieval_service = &state.applications.file_retrieval_service;
let file_management_service = &state.applications.file_management_service;
let folder_service = &state.applications.folder_service;
// Probe destination existence for Overwrite semantics and 201 vs 204.
let dest_existed = if let Some(resolver) = &state.path_resolver {
resolver
.exists_in_drive(&destination_path, dst_drive_id)
.await
.unwrap_or(false)
} else {
folder_service
.get_folder_by_path(&destination_path, dst_drive_id)
.await
.is_ok()
|| file_retrieval_service
.get_file_by_path(&destination_path, dst_drive_id)
.await
.is_ok()
};
if dest_existed {
if !overwrite {
return Err(AppError::precondition_failed(
"Destination already exists and Overwrite is F",
));
}
// RFC 4918 §9.9.3: when Overwrite: T, perform a DELETE on the
// destination before moving. Without this the rename/move fails
// on a unique-index conflict (same name in same parent).
// AuthZ audit #2 (2026-07-12): `_with_perms` returns `DomainError`;
// route through `AppError::from` so authz denials surface as 404 (the
// anti-enum shape) instead of a `map_err → internal_error` 500 that
// gives a probing caller an "exists-but-denied" oracle. Also preserves
// `QuotaExceeded → 507`, `AlreadyExists → 409`, `InvalidInput → 400`.
match resolve_or_legacy(&state, &destination_path, dst_drive_id).await {
Some(ResolvedResource::Folder(f)) => {
folder_service
.delete_folder_with_perms(&f.id, user.id)
.await
.map_err(AppError::from)?;
}
Some(ResolvedResource::File(f)) => {
file_management_service
.delete_file_with_perms(&f.id, user.id)
.await
.map_err(AppError::from)?;
}
None => {}
}
}
let _ = file_retrieval_service;
let resolved = resolve_or_legacy(&state, &source_path, src_drive_id)
.await
.ok_or_else(|| AppError::not_found(format!("Resource not found: {}", source_path)))?;
let dest_name = destination_path
.rsplit('/')
.next()
.unwrap_or(&destination_path);
let dest_parent_path = destination_path
.rfind('/')
.map(|i| &destination_path[..i])
.unwrap_or("");
let source_parent_path = source_path
.rfind('/')
.map(|i| &source_path[..i])
.unwrap_or("");
match resolved {
ResolvedResource::Folder(folder) => {
// RFC 4918 §9.9.5: missing destination parent → 409 Conflict.
let target_parent_id = if dest_parent_path.is_empty() {
None
} else {
match folder_service
.get_folder_by_path(dest_parent_path, dst_drive_id)
.await
{
Ok(parent) => {
let parent_uuid = Uuid::parse_str(&parent.id).map_err(|_| {
AppError::conflict(format!(
"Destination parent not found: {}",
dest_parent_path
))
})?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Create,
Resource::Folder(parent_uuid),
)
.await?;
Some(parent.id)
}
Err(_) => {
return Err(AppError::conflict(format!(
"Destination parent not found: {}",
dest_parent_path
)));
}
}
};
let move_dto = crate::application::dtos::folder_dto::MoveFolderDto {
parent_id: target_parent_id,
};
folder_service
.move_folder_with_perms(&folder.id, move_dto, user.id)
.await
.map_err(AppError::from)?;
if folder.name != dest_name {
let rename_dto = crate::application::dtos::folder_dto::RenameFolderDto {
name: dest_name.to_string(),
};
folder_service
.rename_folder_with_perms(&folder.id, rename_dto, user.id)
.await
.map_err(AppError::from)?;
}
}
ResolvedResource::File(file) => {
// A cross-drive move always changes the parent folder id even
// if the RELATIVE path within each drive looks the same, so
// we key the "same-parent rename" fast-path off drive id
// agreement as well.
let is_same_parent =
src_drive_id == dst_drive_id && source_parent_path == dest_parent_path;
if !is_same_parent {
// RFC 4918 §9.9.5: missing destination parent → 409 Conflict.
let target_parent_id = if dest_parent_path.is_empty() {
None
} else {
let parent = folder_service
.get_folder_by_path(dest_parent_path, dst_drive_id)
.await
.map_err(|_| {
AppError::conflict(format!(
"Destination parent not found: {}",
dest_parent_path
))
})?;
let parent_uuid = Uuid::parse_str(&parent.id).map_err(|_| {
AppError::conflict(format!(
"Destination parent not found: {}",
dest_parent_path
))
})?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Create,
Resource::Folder(parent_uuid),
)
.await?;
Some(parent.id)
};
file_management_service
.move_file_with_perms(&file.id, user.id, target_parent_id)
.await
.map_err(AppError::from)?;
}
if file.name != dest_name {
file_management_service
.rename_file_with_perms(&file.id, user.id, dest_name)
.await
.map_err(AppError::from)?;
}
}
}
// Dead properties follow the resource automatically across MOVE
// and RENAME: the rows in `storage.webdav_dead_properties` key on
// the underlying folder/file id, which is stable across both
// operations (BEFORE trigger rewrites path on the row, AFTER
// cascade rewrites descendants' path/lpath — but no id ever
// changes). RFC 4918 §9.9 "MOVE preserves properties" satisfied
// by the database invariant, no store call needed.
// RFC 4918 §9.9.5: 201 Created when destination is new, 204 when overwritten.
let status = if dest_existed {
StatusCode::NO_CONTENT
} else {
StatusCode::CREATED
};
Ok(Response::builder()
.status(status)
.body(Body::empty())
.unwrap())
}
/**
* Handles COPY requests to duplicate files or folders.
*
* This handler copies a file or folder from one path to another.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The source resource path
* @param req The HTTP request containing the destination path
* @return HTTP response indicating success
*/
async fn handle_copy(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
let source_path = path;
// Captured up front (cheap; used below for the destination lock guard).
// COPY doesn't mutate the source, so no source lock check — only the
// destination needs to clear (RFC 4918 §9.10.4).
let if_header_owned = req
.headers()
.get("If")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
// Get destination from Destination header
let destination = req
.headers()
.get("Destination")
.and_then(|v| v.to_str().ok())
.ok_or_else(|| AppError::bad_request("Destination header required"))?
.to_string();
// Overwrite header (RFC 4918 §9.8.4): T = overwrite, F = fail if exists
let overwrite = req
.headers()
.get("Overwrite")
.and_then(|v| v.to_str().ok())
.unwrap_or("T")
!= "F";
// Extract destination path from URL and percent-decode it
let destination_path = if let Some(webdav_prefix) = destination.find("/webdav/") {
let after_prefix = &destination[webdav_prefix + 8..];
let trimmed = after_prefix.trim_end_matches('/');
percent_decode_str(trimmed).decode_utf8_lossy().into_owned()
} else {
return Err(AppError::bad_request("Invalid destination URL"));
};
// SECURITY: reject path-traversal in destination
reject_path_traversal(&destination_path)?;
// Resolve BOTH source and destination scope. Cross-drive COPY is
// permitted: `copy_file_with_perms` / `copy_folder_tree_with_perms`
// take a target folder id and don't care which drive it lives in;
// the D5 `forbid_cross_drive_move` policy applies to MOVE only,
// never to COPY (copying is non-destructive on the source side).
// Downstream probes need the right drive per side, so we thread
// `src_drive_id` for source probes and `dst_drive_id` for
// destination probes.
let src_scope = resolve_webdav_scope_or_405(&state, user.id, &source_path).await?;
let dst_scope = resolve_webdav_scope_or_405(&state, user.id, &destination_path).await?;
let src_drive_id = src_scope.drive_id;
let dst_drive_id = dst_scope.drive_id;
let source_path = src_scope.db_path;
let destination_path = dst_scope.db_path;
// RFC 4918 §9.8.5: COPY to self MUST return 403 Forbidden.
if destination_path == source_path {
return Err(AppError::forbidden("Cannot COPY a resource to itself"));
}
// Active-lock guard on the destination (RFC 4918 §9.10.4).
if let Some(resp) = enforce_native_lock(
&state.webdav_lock_store,
if_header_owned.as_deref(),
&destination_path,
None,
) {
return Ok(resp);
}
// Get depth from Depth header
let depth = req
.headers()
.get("Depth")
.and_then(|v| v.to_str().ok())
.unwrap_or("infinity");
// Get services from state
let file_retrieval_service = &state.applications.file_retrieval_service;
let folder_service = &state.applications.folder_service;
let file_management_service = &state.applications.file_management_service;
// Scope already resolved above; keep `path` alias for downstream code
// that still reads `path` under its original name.
let _path = source_path.clone();
// Probe destination existence for Overwrite semantics and 201 vs 204.
let dest_existed = if let Some(resolver) = &state.path_resolver {
resolver
.exists_in_drive(&destination_path, dst_drive_id)
.await
.unwrap_or(false)
} else {
folder_service
.get_folder_by_path(&destination_path, dst_drive_id)
.await
.is_ok()
|| file_retrieval_service
.get_file_by_path(&destination_path, dst_drive_id)
.await
.is_ok()
};
if dest_existed {
if !overwrite {
return Err(AppError::precondition_failed(
"Destination already exists and Overwrite is F",
));
}
// RFC 4918 §9.8.4: when Overwrite: T, the server MUST perform a
// DELETE on the destination before the copy. Without this the copy
// service returns a unique-index conflict (500).
// AuthZ audit #2 (2026-07-12): `_with_perms` returns `DomainError`;
// route through `AppError::from` so authz denials surface as 404 (the
// anti-enum shape) instead of a `map_err → internal_error` 500 that
// gives a probing caller an "exists-but-denied" oracle. Also preserves
// `QuotaExceeded → 507`, `AlreadyExists → 409`, `InvalidInput → 400`.
match resolve_or_legacy(&state, &destination_path, dst_drive_id).await {
Some(ResolvedResource::Folder(f)) => {
folder_service
.delete_folder_with_perms(&f.id, user.id)
.await
.map_err(AppError::from)?;
}
Some(ResolvedResource::File(f)) => {
file_management_service
.delete_file_with_perms(&f.id, user.id)
.await
.map_err(AppError::from)?;
}
None => {}
}
}
let _ = file_retrieval_service;
let resolved = resolve_or_legacy(&state, &source_path, src_drive_id)
.await
.ok_or_else(|| AppError::not_found(format!("Resource not found: {}", source_path)))?;
let dest_name = destination_path
.rsplit('/')
.next()
.unwrap_or(&destination_path);
let dest_parent_path = destination_path
.rfind('/')
.map(|i| &destination_path[..i])
.unwrap_or("");
// RFC 4918 §9.8.5: if the destination parent does not exist, return 409.
let target_parent_id = if dest_parent_path.is_empty() {
None
} else {
match folder_service
.get_folder_by_path(dest_parent_path, dst_drive_id)
.await
{
Ok(parent) => {
let parent_uuid = Uuid::parse_str(&parent.id).map_err(|_| {
AppError::conflict(format!(
"Destination parent not found: {}",
dest_parent_path
))
})?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Create,
Resource::Folder(parent_uuid),
)
.await?;
Some(parent.id)
}
Err(_) => {
return Err(AppError::conflict(format!(
"Destination parent not found: {}",
dest_parent_path
)));
}
}
};
// AuthZ audit #2 (2026-07-12): route service errors through
// `AppError::from` so authz denials from `_with_perms` surface as 404
// (the anti-enum shape) instead of a `map_err → internal_error` 500
// that gives a probing caller an "exists-but-denied" oracle. Also
// preserves `QuotaExceeded → 507`, `AlreadyExists → 409`,
// `InvalidInput → 400` shapes.
match resolved {
ResolvedResource::Folder(folder) => {
let recursive = depth != "0";
if recursive {
file_management_service
.copy_folder_tree_with_perms(
&folder.id,
user.id,
target_parent_id,
Some(dest_name.to_string()),
)
.await
.map_err(AppError::from)?;
} else {
let create_dto = crate::application::dtos::folder_dto::CreateFolderDto {
name: dest_name.to_string(),
parent_id: target_parent_id,
};
folder_service
.create_folder_with_perms(create_dto, user.id)
.await
.map_err(AppError::from)?;
}
}
ResolvedResource::File(file) => {
let copy_name = (file.name != dest_name).then(|| dest_name.to_string());
file_management_service
.copy_file_with_perms(&file.id, user.id, target_parent_id, copy_name)
.await
.map_err(AppError::from)?;
}
}
// RFC 4918 §9.8.5: 201 Created when destination is new, 204 when overwritten.
let status = if dest_existed {
StatusCode::NO_CONTENT
} else {
StatusCode::CREATED
};
Ok(Response::builder()
.status(status)
.body(Body::empty())
.unwrap())
}
/**
* Handles LOCK requests to lock resources.
*
* This handler processes WebDAV LOCK requests according to RFC 4918,
* creating a lock on a file or folder.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The requested resource path
* @param req The HTTP request containing the LOCK XML body
* @return XML response with lock information
*/
async fn handle_lock(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
// Scope resolution BEFORE the collection probe so `path` becomes
// the drive-scoped DB path everywhere downstream — critically the
// `lock_store.acquire(&path, …)` call must use the SAME key that
// `enforce_native_lock` will look up from the write verbs
// (PUT/DELETE/MOVE/COPY/PROPPATCH), all of which pass the DB path.
// Locking the URL path here and looking up the DB path in PUT
// would silently defeat the lock — that's the regression this
// shape prevents.
let (drive_id, path) = if path.is_empty() || path == "/" {
(Uuid::nil(), path)
} else {
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
(scope.drive_id, scope.db_path)
};
// Determine collection-vs-file for href shape AND resolve the
// target for AuthZ. Root + known folders → collection; existing
// files → file; missing path → lock-null (RFC 4918 §7.3 /
// §9.10.1, used by Office save flows). AuthZ per case:
// * Existing folder / file → `Update` on the resource.
// * Lock-null (target doesn't exist yet) → `Create` on the
// parent folder (the lock reserves the URL for a future PUT
// that would need `Create` anyway; deny here so a Viewer
// can't create a lock-null placeholder on someone else's
// namespace).
// Denial routes through `NotFound` (anti-enum), matching the
// rest of the WebDAV surface.
let (is_collection, lockable_resource) = if path.is_empty() {
(true, None)
} else if let Ok(folder) = state
.applications
.folder_service
.get_folder_by_path(&path, drive_id)
.await
{
let uuid = Uuid::parse_str(&folder.id)
.map_err(|e| AppError::internal_error(format!("Folder id is not a UUID: {e}")))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Update,
Resource::Folder(uuid),
)
.await?;
(true, Some(Resource::Folder(uuid)))
} else if let Ok(file) = state
.applications
.file_retrieval_service
.get_file_by_path(&path, drive_id)
.await
{
let uuid = Uuid::parse_str(&file.id)
.map_err(|e| AppError::internal_error(format!("File id is not a UUID: {e}")))?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Update,
Resource::File(uuid),
)
.await?;
(false, Some(Resource::File(uuid)))
} else {
// Lock-null: authorise on the parent folder. The last `/` in
// `path` splits parent from name; empty parent means the drive
// root (which itself was already resolved above — the caller
// must have Read on it to have gotten this far via
// `resolve_webdav_scope`).
let parent_path = path.rfind('/').map(|i| &path[..i]).unwrap_or("");
if !parent_path.is_empty() {
let parent = state
.applications
.folder_service
.get_folder_by_path(parent_path, drive_id)
.await
.map_err(|_| AppError::conflict("Parent folder not found for lock-null"))?;
let parent_uuid = Uuid::parse_str(&parent.id).map_err(|e| {
AppError::internal_error(format!("Parent folder id is not a UUID: {e}"))
})?;
state
.authorization
.require(
Subject::User(user.id),
Permission::Create,
Resource::Folder(parent_uuid),
)
.await?;
}
// No resource to authorise directly — the lock reserves the URL,
// downstream PUT will re-authorise via its own Create/Update.
(false, None)
};
let _ = lockable_resource;
// Get the headers that we need
let depth = req
.headers()
.get("Depth")
.and_then(|v| v.to_str().ok())
.unwrap_or("infinity")
.to_string();
let timeout = req
.headers()
.get("Timeout")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
let if_header_value = req
.headers()
.get("If")
.and_then(|v| v.to_str().ok())
.map(|s| s.to_string());
// Extract the body separately to avoid borrow issues
let body_bytes = {
// Convert the request into a body
let body = req.into_body();
// Read request body (LOCK is XML, 1 MB is more than enough)
body::to_bytes(body, MAX_XML_BODY)
.await
.map_err(|e| AppError::bad_request(format!("Failed to read request body: {}", e)))?
};
let lock_store = &state.webdav_lock_store;
// Check if this is a lock refresh (If header with a lock token)
if let Some(if_header) = if_header_value {
// Extract lock token from If header
let token = if_header
.trim()
.trim_start_matches("(<")
.trim_end_matches(">)")
.to_string();
// Refresh the lock in the store (extends TTL)
let entry = lock_store
.refresh(&token, timeout.as_deref())
.ok_or_else(|| {
AppError::precondition_failed(format!("Lock token not found or expired: {}", token))
})?;
// Generate response — collection vs file href chosen above.
let href = if is_collection {
webdav_collection_href(&path)
} else {
webdav_href(&path)
};
let mut response_body = Vec::new();
WebDavAdapter::generate_lock_response(&mut response_body, &entry.info, &href).map_err(
|e| AppError::internal_error(format!("Failed to generate LOCK response: {}", e)),
)?;
Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.header(HEADER_LOCK_TOKEN, format!("<{}>", entry.info.token))
.body(Body::from(response_body))
.unwrap())
} else if !body_bytes.is_empty() {
// Parse lock request
let (scope, type_, owner) = WebDavAdapter::parse_lockinfo(body_bytes.reader())
.map_err(|e| AppError::bad_request(format!("Failed to parse LOCK request: {}", e)))?;
let token = format!("opaquelocktoken:{}", Uuid::new_v4());
let lock_info = LockInfo {
token,
owner: owner.or(Some(user.id.to_string())),
depth: depth.to_string(),
timeout,
scope,
type_,
};
// Try to acquire the lock (conflict detection via moka store).
// `caller_user_id` is stamped on the entry so `handle_unlock`
// can enforce RFC 4918 §9.11's owner-only rule.
let entry = lock_store
.acquire(&path, lock_info, Some(user.id))
.map_err(|existing| {
AppError::locked(format!(
"Resource already locked by token {}",
existing.info.token
))
})?;
// Generate response — collection vs file href chosen above.
let href = if is_collection {
webdav_collection_href(&path)
} else {
webdav_href(&path)
};
let mut response_body = Vec::new();
WebDavAdapter::generate_lock_response(&mut response_body, &entry.info, &href).map_err(
|e| AppError::internal_error(format!("Failed to generate LOCK response: {}", e)),
)?;
Ok(Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
.header(HEADER_LOCK_TOKEN, format!("<{}>", entry.info.token))
.body(Body::from(response_body))
.unwrap())
} else {
Err(AppError::bad_request("Invalid LOCK request"))
}
}
/**
* Handles UNLOCK requests to remove locks from resources.
*
* This handler processes WebDAV UNLOCK requests according to RFC 4918,
* removing a lock from a file or folder.
*
* @param state The application state containing service dependencies
* @param user The authenticated user information
* @param path The requested resource path
* @param req The HTTP request containing the lock token
* @return HTTP response indicating success
*/
async fn handle_unlock(
state: Arc<AppState>,
req: Request<Body>,
path: String,
) -> Result<Response<Body>, AppError> {
let user = extract_user(&req)?;
// Get lock token from Lock-Token header
let lock_token = req
.headers()
.get("Lock-Token")
.and_then(|v| v.to_str().ok())
.ok_or_else(|| AppError::bad_request("Lock-Token header required"))?;
// Extract token from header value (format: <token>)
let token = lock_token
.trim()
.trim_start_matches('<')
.trim_end_matches('>')
.to_string();
// RFC 4918 §9.11 owner-only check. `LockEntry.caller_user_id`
// was stamped by `handle_lock` at acquire time. When the lock
// exists AND we know the acquirer, only that user can UNLOCK.
// Denial routes through the standard authz `NotFound` anti-enum
// — a caller who neither holds the lock nor has any perm on the
// resource shouldn't learn whether the lock exists.
//
// Approximations preserved:
// * Lock entries seeded by tests (`caller_user_id = None`) fall
// through to the Update-based check below — they were never
// bound to a real user.
// * If the token isn't in the store at all (expired, never
// existed) we skip the owner check and let the `release`
// call below return the RFC-standard 409.
let lock_entry = state.webdav_lock_store.get_by_token(&token);
if let Some(entry) = &lock_entry
&& let Some(owner_id) = entry.caller_user_id
&& owner_id != user.id
{
tracing::info!(
target: "audit",
event = "webdav.unlock_denied",
reason = "not_lock_owner",
caller_id = %user.id,
lock_owner_id = %owner_id,
token = %token,
"👮🏻‍♂️ UNLOCK refused: caller does not own the lock",
);
return Err(AppError::not_found(format!(
"Lock token not found or already expired: {}",
token
)));
}
// Defence-in-depth for the test-seeded / legacy `caller_user_id
// = None` case: require `Update` on the target resource so a
// Read-only grantee still can't unlock. Uses the URL path (the
// lock's target) to resolve the resource. Missing target → skip
// (lock-null unlock is legitimate).
if let Some(entry) = &lock_entry
&& entry.caller_user_id.is_none()
&& !path.is_empty()
&& path != "/"
{
let scope = resolve_webdav_scope_or_405(&state, user.id, &path).await?;
let drive_id = scope.drive_id;
let db_path = scope.db_path;
if let Some(resource) = match resolve_or_legacy(&state, &db_path, drive_id).await {
Some(ResolvedResource::Folder(f)) => Uuid::parse_str(&f.id).ok().map(Resource::Folder),
Some(ResolvedResource::File(f)) => Uuid::parse_str(&f.id).ok().map(Resource::File),
None => None,
} {
state
.authorization
.require(Subject::User(user.id), Permission::Update, resource)
.await?;
}
}
// Remove the lock from the store
if !state.webdav_lock_store.release(&token) {
// RFC 4918 §9.11.1: If the lock does not exist, return 409 Conflict
return Err(AppError::conflict(format!(
"Lock token not found or already expired: {}",
token
)));
}
Ok(Response::builder()
.status(StatusCode::NO_CONTENT)
.body(Body::empty())
.unwrap())
}
#[cfg(test)]
mod tests {
use super::*;
// ── RFC 4918 §10.4 If: header parser + evaluator ────────────────
#[test]
fn parse_if_simple_state_token() {
let lists = parse_if_header("(<opaquelocktoken:xyz>)");
assert_eq!(
lists,
vec![vec![IfCondition::StateToken {
negated: false,
token: "opaquelocktoken:xyz".to_string(),
}]]
);
}
#[test]
fn parse_if_no_tag_list_two_lists() {
let lists = parse_if_header("(<T1>) (Not <DAV:no-lock>)");
assert_eq!(lists.len(), 2);
assert_eq!(
lists[0],
vec![IfCondition::StateToken {
negated: false,
token: "T1".to_string(),
}]
);
assert_eq!(
lists[1],
vec![IfCondition::StateToken {
negated: true,
token: "DAV:no-lock".to_string(),
}]
);
}
#[test]
fn parse_if_state_token_and_etag() {
let lists = parse_if_header("(<T1> [\"abc123\"])");
assert_eq!(
lists[0],
vec![
IfCondition::StateToken {
negated: false,
token: "T1".to_string(),
},
IfCondition::EntityTag {
negated: false,
etag: "abc123".to_string(),
},
]
);
}
#[test]
fn parse_if_tagged_list_resource_ignored() {
// Tagged-list — the Resource prefix `<http://…/foo>` scopes the
// following Lists; our parser accepts but doesn't honour scoping.
let lists = parse_if_header("<http://example.com/foo> (<T1>)");
assert_eq!(lists.len(), 1);
assert_eq!(
lists[0],
vec![IfCondition::StateToken {
negated: false,
token: "T1".to_string(),
}]
);
}
#[test]
fn parse_if_complex_two_lists_token_and_etag() {
// The litmus fail_complex_cond_put shape.
let lists =
parse_if_header("(<opaquelocktoken:xyz> [\"etag1\"]) (Not <DAV:no-lock> [\"etag2\"])");
assert_eq!(lists.len(), 2);
assert_eq!(lists[0].len(), 2);
assert_eq!(lists[1].len(), 2);
assert_eq!(
lists[1][0],
IfCondition::StateToken {
negated: true,
token: "DAV:no-lock".to_string(),
}
);
}
// Litmus `cond_put`: locked resource, `(<token> [etag])`, matches
// both → header true, submitted the lock → proceed.
#[test]
fn evaluate_cond_put_success() {
let lists = parse_if_header("(<opaquelocktoken:xyz> [\"abc\"])");
let (matches, submitted) =
evaluate_if_header(&lists, Some("opaquelocktoken:xyz"), Some("abc"));
assert!(matches);
assert!(submitted);
}
// Litmus `fail_cond_put`: locked resource, bogus token, valid etag
// → List has token=FALSE AND etag=TRUE → FALSE. No matching token
// submitted → 423 (caller returns Locked).
#[test]
fn evaluate_fail_cond_put_bogus_token_valid_etag() {
let lists = parse_if_header("(<DAV:no-lock> [\"abc\"])");
let (matches, submitted) =
evaluate_if_header(&lists, Some("opaquelocktoken:xyz"), Some("abc"));
assert!(!matches);
assert!(!submitted);
}
// Litmus `fail_cond_put_unlocked`: unlocked resource, bogus token
// → List fails. No lock to submit → 412.
#[test]
fn evaluate_fail_cond_put_unlocked() {
let lists = parse_if_header("(<DAV:no-lock>)");
let (matches, submitted) = evaluate_if_header(&lists, None, None);
assert!(!matches);
assert!(!submitted);
}
// Litmus `cond_put_with_not`: locked, `(<token>) (Not <DAV:no-lock>)`
// → List 1 true (token match). Header true. Submitted → proceed.
#[test]
fn evaluate_cond_put_with_not() {
let lists = parse_if_header("(<opaquelocktoken:xyz>) (Not <DAV:no-lock>)");
let (matches, submitted) = evaluate_if_header(&lists, Some("opaquelocktoken:xyz"), None);
assert!(matches);
assert!(submitted);
}
// Litmus `cond_put_corrupt_token`: locked, `(<corrupt>) (Not <DAV:no-lock>)`
// → List 2 (Not <DAV:no-lock>) is TRUE, header matches. But no
// active-lock token submitted → 423 per §10.4.9.
#[test]
fn evaluate_cond_put_corrupt_token() {
let lists = parse_if_header("(<opaquelocktoken:corrupt>) (Not <DAV:no-lock>)");
let (matches, submitted) = evaluate_if_header(&lists, Some("opaquelocktoken:xyz"), None);
assert!(matches);
assert!(!submitted);
}
// Litmus `complex_cond_put`: locked, `(<token> [etag]) (Not <no-lock> [etag])`
// with the CORRECT etag → List 1 true. Header true. Submitted → proceed.
#[test]
fn evaluate_complex_cond_put_success() {
let lists =
parse_if_header("(<opaquelocktoken:xyz> [\"abc\"]) (Not <DAV:no-lock> [\"abc\"])");
let (matches, submitted) =
evaluate_if_header(&lists, Some("opaquelocktoken:xyz"), Some("abc"));
assert!(matches);
assert!(submitted);
}
// Litmus `fail_complex_cond_put`: locked, `(<token> [corrupt]) (Not <no-lock> [corrupt])`
// → both Lists AND to false (etag mismatch). Header FALSE. Token
// WAS submitted (in List 1) → 412 not 423.
#[test]
fn evaluate_fail_complex_cond_put() {
let lists = parse_if_header(
"(<opaquelocktoken:xyz> [\"corrupt\"]) (Not <DAV:no-lock> [\"corrupt\"])",
);
let (matches, submitted) =
evaluate_if_header(&lists, Some("opaquelocktoken:xyz"), Some("abc"));
assert!(!matches);
assert!(
submitted,
"the valid token IS submitted, even though etag conditions fail"
);
}
#[test]
fn evaluate_etag_with_quotes_matches_raw() {
// The stored etag is raw (unquoted). The If: header quotes it.
// trim_matches should normalise both sides.
let lists = parse_if_header("([\"abc123-1234\"])");
let (matches, _) = evaluate_if_header(&lists, None, Some("abc123-1234"));
assert!(matches);
}
#[test]
fn parse_if_empty_returns_no_lists() {
assert_eq!(parse_if_header("").len(), 0);
}
#[test]
fn evaluate_empty_lists_is_true() {
let (matches, submitted) = evaluate_if_header(&Vec::new(), None, None);
assert!(matches);
assert!(!submitted);
}
#[test]
fn test_webdav_href_no_trailing_slash() {
assert_eq!(
webdav_href("Documents/report.pdf"),
"/webdav/Documents/report.pdf"
);
assert_eq!(webdav_href("file.txt"), "/webdav/file.txt");
}
#[test]
fn test_webdav_collection_href_appends_slash_when_missing() {
assert_eq!(webdav_collection_href("Documents"), "/webdav/Documents/");
assert_eq!(
webdav_collection_href("Documents/subfolder"),
"/webdav/Documents/subfolder/"
);
}
#[test]
fn test_webdav_collection_href_idempotent_when_already_slashed() {
// `encode_uri_path` never emits a trailing `/` of its own
// because the path argument is already trimmed by routing,
// but the helper still has to be robust to a path that
// happens to end in `/` — exercise the idempotence path.
assert_eq!(webdav_collection_href("Documents/"), "/webdav/Documents/");
}
#[test]
fn test_webdav_href_preserves_url_encoding() {
// Spaces and Unicode must percent-encode at the segment level,
// not get a verbatim `%20` re-encoded as `%2520`.
assert_eq!(
webdav_href("My Photos/vacation pic.jpg"),
"/webdav/My%20Photos/vacation%20pic.jpg"
);
assert_eq!(
webdav_collection_href("My Photos/2024"),
"/webdav/My%20Photos/2024/"
);
}
}