Merge pull request #97 from lennart-k/feature/sharing

Fix issues with group collections

Cargo.lock

@@ -2999,7 +2999,7 @@ dependencies = [
 
 [[package]]
 name = "rustical"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "anyhow",
  "argon2",
@@ -3042,7 +3042,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_caldav"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "async-std",
  "async-trait",
@@ -3080,7 +3080,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_carddav"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "async-trait",
  "axum",
@@ -3112,7 +3112,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_dav"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "async-trait",
  "axum",
@@ -3137,7 +3137,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_dav_push"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "async-trait",
  "axum",
@@ -3163,7 +3163,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_frontend"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "askama",
  "askama_web",
@@ -3196,7 +3196,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_ical"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "axum",
  "chrono",
@@ -3214,7 +3214,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_oidc"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "async-trait",
  "axum",
@@ -3229,7 +3229,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_store"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -3263,7 +3263,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_store_sqlite"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "async-trait",
  "chrono",
@@ -3284,7 +3284,7 @@ dependencies = [
 
 [[package]]
 name = "rustical_xml"
-version = "0.4.9"
+version = "0.4.13"
 dependencies = [
  "quick-xml",
  "thiserror 2.0.12",

Cargo.toml

@@ -2,7 +2,7 @@
 members = ["crates/*"]
 
 [workspace.package]
-version = "0.4.9"
+version = "0.4.13"
 edition = "2024"
 description = "A CalDAV server"
 repository = "https://github.com/lennart-k/rustical"

crates/caldav/src/calendar/methods/get.rs

@@ -4,7 +4,7 @@ use axum::body::Body;
 use axum::extract::State;
 use axum::{extract::Path, response::Response};
 use headers::{ContentType, HeaderMapExt};
-use http::{HeaderValue, StatusCode, header};
+use http::{HeaderValue, Method, StatusCode, header};
 use ical::generator::{Emitter, IcalCalendarBuilder};
 use ical::property::Property;
 use percent_encoding::{CONTROLS, utf8_percent_encode};
@@ -19,6 +19,7 @@ pub async fn route_get<C: CalendarStore, S: SubscriptionStore>(
     Path((principal, calendar_id)): Path<(String, String)>,
     State(CalendarResourceService { cal_store, .. }): State<CalendarResourceService<C, S>>,
     user: Principal,
+    method: Method,
 ) -> Result<Response, Error> {
     if !user.is_principal(&principal) {
         return Err(crate::Error::Unauthorized);
@@ -96,5 +97,9 @@ pub async fn route_get<C: CalendarStore, S: SubscriptionStore>(
         ))
         .unwrap(),
     );
-    Ok(resp.body(Body::new(ical_calendar.generate())).unwrap())
+    if matches!(method, Method::HEAD) {
+        Ok(resp.body(Body::empty()).unwrap())
+    } else {
+        Ok(resp.body(Body::new(ical_calendar.generate())).unwrap())
+    }
 }

crates/caldav/src/calendar/methods/report/mod.rs

@@ -67,7 +67,7 @@ fn objects_response(
                 object,
                 principal: principal.to_owned(),
             }
-            .propfind(&path, prop, puri, user)?,
+            .propfind(&path, prop, None, puri, user)?,
         );
     }
 

crates/caldav/src/calendar/methods/report/sync_collection.rs

@@ -39,7 +39,7 @@ pub async fn handle_sync_collection<C: CalendarStore>(
                 object,
                 principal: principal.to_owned(),
             }
-            .propfind(&path, &sync_collection.prop, puri, user)?,
+            .propfind(&path, &sync_collection.prop, None, puri, user)?,
         );
     }
 

crates/caldav/src/calendar/resource.rs

@@ -201,10 +201,7 @@ impl Resource for CalendarResource {
                     if let Some(tzid) = &timezone_id {
                         // Validate timezone id
                         chrono_tz::Tz::from_str(tzid).map_err(|_| {
-                            rustical_dav::Error::BadRequest(format!(
-                                "Invalid timezone-id: {}",
-                                tzid
-                            ))
+                            rustical_dav::Error::BadRequest(format!("Invalid timezone-id: {tzid}"))
                         })?;
                         // TODO: Ensure that timezone is also updated (For now hope that clients play nice)
                     }

crates/caldav/src/calendar_object/methods.rs

@@ -6,7 +6,7 @@ use axum::extract::{Path, State};
 use axum::response::{IntoResponse, Response};
 use axum_extra::TypedHeader;
 use headers::{ContentType, ETag, HeaderMapExt, IfNoneMatch};
-use http::{HeaderMap, StatusCode};
+use http::{HeaderMap, Method, StatusCode};
 use rustical_ical::CalendarObject;
 use rustical_store::CalendarStore;
 use rustical_store::auth::Principal;
@@ -22,6 +22,7 @@ pub async fn get_event<C: CalendarStore>(
     }): Path<CalendarObjectPathComponents>,
     State(CalendarObjectResourceService { cal_store }): State<CalendarObjectResourceService<C>>,
     user: Principal,
+    method: Method,
 ) -> Result<Response, Error> {
     if !user.is_principal(&principal) {
         return Err(crate::Error::Unauthorized);
@@ -42,7 +43,11 @@ pub async fn get_event<C: CalendarStore>(
     let hdrs = resp.headers_mut().unwrap();
     hdrs.typed_insert(ETag::from_str(&event.get_etag()).unwrap());
     hdrs.typed_insert(ContentType::from_str("text/calendar").unwrap());
-    Ok(resp.body(Body::new(event.get_ics().to_owned())).unwrap())
+    if matches!(method, Method::HEAD) {
+        Ok(resp.body(Body::empty()).unwrap())
+    } else {
+        Ok(resp.body(Body::new(event.get_ics().to_owned())).unwrap())
+    }
 }
 
 #[instrument(skip(cal_store))]

crates/caldav/src/calendar_object/resource.rs

@@ -69,7 +69,6 @@ impl Resource for CalendarObjectResource {
     }
 
     fn get_displayname(&self) -> Option<&str> {
-        // TODO: Extract summary from object
         None
     }
 

crates/caldav/src/lib.rs

@@ -1,5 +1,3 @@
-use axum::response::Redirect;
-use axum::routing::any;
 use axum::{Extension, Router};
 use derive_more::Constructor;
 use principal::PrincipalResourceService;
@@ -14,7 +12,6 @@ pub mod calendar;
 pub mod calendar_object;
 pub mod error;
 pub mod principal;
-
 pub use error::Error;
 
 #[derive(Debug, Clone, Constructor)]
@@ -34,23 +31,18 @@ pub fn caldav_router<AP: AuthenticationProvider, C: CalendarStore, S: Subscripti
     auth_provider: Arc<AP>,
     store: Arc<C>,
     subscription_store: Arc<S>,
+    simplified_home_set: bool,
 ) -> Router {
-    let principal_service = PrincipalResourceService {
-        auth_provider: auth_provider.clone(),
-        sub_store: subscription_store.clone(),
-        cal_store: store.clone(),
-    };
-
-    Router::new()
-        .nest(
-            prefix,
-            RootResourceService::<_, Principal, CalDavPrincipalUri>::new(principal_service.clone())
-                .axum_router()
-                .layer(AuthenticationLayer::new(auth_provider))
-                .layer(Extension(CalDavPrincipalUri(prefix))),
-        )
-        .route(
-            "/.well-known/caldav",
-            any(async || Redirect::permanent(prefix)),
-        )
+    Router::new().nest(
+        prefix,
+        RootResourceService::<_, Principal, CalDavPrincipalUri>::new(PrincipalResourceService {
+            auth_provider: auth_provider.clone(),
+            sub_store: subscription_store.clone(),
+            cal_store: store.clone(),
+            simplified_home_set,
+        })
+        .axum_router()
+        .layer(AuthenticationLayer::new(auth_provider))
+        .layer(Extension(CalDavPrincipalUri(prefix))),
+    )
 }

crates/caldav/src/principal/mod.rs

@@ -18,6 +18,8 @@ pub mod tests;
 pub struct PrincipalResource {
     principal: Principal,
     members: Vec<String>,
+    // If true only return the principal as the calendar home set, otherwise also groups
+    simplified_home_set: bool,
 }
 
 impl ResourceName for PrincipalResource {
@@ -64,9 +66,17 @@ impl Resource for PrincipalResource {
                     PrincipalPropName::PrincipalUrl => {
                         PrincipalProp::PrincipalUrl(principal_url.into())
                     }
-                    PrincipalPropName::CalendarHomeSet => {
-                        PrincipalProp::CalendarHomeSet(principal_url.into())
-                    }
+                    PrincipalPropName::CalendarHomeSet => PrincipalProp::CalendarHomeSet(
+                        CalendarHomeSet(if self.simplified_home_set {
+                            vec![principal_url.into()]
+                        } else {
+                            self.principal
+                                .memberships()
+                                .iter()
+                                .map(|principal| puri.principal_uri(principal).into())
+                                .collect()
+                        }),
+                    ),
                     PrincipalPropName::CalendarUserAddressSet => {
                         PrincipalProp::CalendarUserAddressSet(principal_url.into())
                     }

crates/caldav/src/principal/prop.rs

@@ -31,9 +31,12 @@ pub enum PrincipalProp {
 
     // CalDAV (RFC 4791)
     #[xml(ns = "rustical_dav::namespace::NS_CALDAV")]
-    CalendarHomeSet(HrefElement),
+    CalendarHomeSet(CalendarHomeSet),
 }
 
+#[derive(XmlDeserialize, XmlSerialize, PartialEq, Clone)]
+pub struct CalendarHomeSet(#[xml(ty = "untagged", flatten)] pub Vec<HrefElement>);
+
 #[derive(XmlDeserialize, XmlSerialize, PartialEq, Clone, EnumVariants, PropName)]
 #[xml(unit_variants_ident = "PrincipalPropWrapperName", untagged)]
 pub enum PrincipalPropWrapper {

crates/caldav/src/principal/service.rs

@@ -18,6 +18,8 @@ pub struct PrincipalResourceService<
     pub(crate) auth_provider: Arc<AP>,
     pub(crate) sub_store: Arc<S>,
     pub(crate) cal_store: Arc<CS>,
+    // If true only return the principal as the calendar home set, otherwise also groups
+    pub(crate) simplified_home_set: bool,
 }
 
 impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore> Clone
@@ -28,6 +30,7 @@ impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore> Clone
             auth_provider: self.auth_provider.clone(),
             sub_store: self.sub_store.clone(),
             cal_store: self.cal_store.clone(),
+            simplified_home_set: self.simplified_home_set,
         }
     }
 }
@@ -58,6 +61,7 @@ impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore> Resour
         Ok(PrincipalResource {
             members: self.auth_provider.list_members(&user.id).await?,
             principal: user,
+            simplified_home_set: self.simplified_home_set,
         })
     }
 

crates/caldav/src/principal/tests.rs

@@ -27,6 +27,7 @@ async fn test_principal_resource(
         cal_store: Arc::new(cal_store.await),
         sub_store: Arc::new(sub_store.await),
         auth_provider: Arc::new(auth_provider.await),
+        simplified_home_set: false,
     };
 
     assert!(matches!(

crates/carddav/src/address_object/methods.rs

@@ -7,6 +7,7 @@ use axum::extract::{Path, State};
 use axum::response::{IntoResponse, Response};
 use axum_extra::TypedHeader;
 use axum_extra::headers::{ContentType, ETag, HeaderMapExt, IfNoneMatch};
+use http::Method;
 use http::{HeaderMap, StatusCode};
 use rustical_dav::privileges::UserPrivilege;
 use rustical_dav::resource::Resource;
@@ -25,6 +26,7 @@ pub async fn get_object<AS: AddressbookStore>(
     }): Path<AddressObjectPathComponents>,
     State(AddressObjectResourceService { addr_store }): State<AddressObjectResourceService<AS>>,
     user: Principal,
+    method: Method,
 ) -> Result<Response, Error> {
     if !user.is_principal(&principal) {
         return Err(Error::Unauthorized);
@@ -49,7 +51,11 @@ pub async fn get_object<AS: AddressbookStore>(
     let hdrs = resp.headers_mut().unwrap();
     hdrs.typed_insert(ETag::from_str(&object.get_etag()).unwrap());
     hdrs.typed_insert(ContentType::from_str("text/vcard").unwrap());
-    Ok(resp.body(Body::new(object.get_vcf().to_owned())).unwrap())
+    if matches!(method, Method::HEAD) {
+        Ok(resp.body(Body::empty()).unwrap())
+    } else {
+        Ok(resp.body(Body::new(object.get_vcf().to_owned())).unwrap())
+    }
 }
 
 #[instrument(skip(addr_store, body))]

crates/carddav/src/addressbook/methods/get.rs

@@ -5,7 +5,7 @@ use axum::body::Body;
 use axum::extract::{Path, State};
 use axum::response::Response;
 use axum_extra::headers::{ContentType, HeaderMapExt};
-use http::{HeaderValue, StatusCode, header};
+use http::{HeaderValue, Method, StatusCode, header};
 use percent_encoding::{CONTROLS, utf8_percent_encode};
 use rustical_dav::privileges::UserPrivilege;
 use rustical_dav::resource::Resource;
@@ -20,6 +20,7 @@ pub async fn route_get<AS: AddressbookStore, S: SubscriptionStore>(
     Path((principal, addressbook_id)): Path<(String, String)>,
     State(AddressbookResourceService { addr_store, .. }): State<AddressbookResourceService<AS, S>>,
     user: Principal,
+    method: Method,
 ) -> Result<Response, Error> {
     if !user.is_principal(&principal) {
         return Err(Error::Unauthorized);
@@ -46,7 +47,7 @@ pub async fn route_get<AS: AddressbookStore, S: SubscriptionStore>(
     let mut resp = Response::builder().status(StatusCode::OK);
     let hdrs = resp.headers_mut().unwrap();
     hdrs.typed_insert(ContentType::from_str("text/vcard").unwrap());
-    let filename = format!("{}_{}.vcf", principal, addressbook_id);
+    let filename = format!("{principal}_{addressbook_id}.vcf");
     let filename = utf8_percent_encode(&filename, CONTROLS);
     hdrs.insert(
         header::CONTENT_DISPOSITION,
@@ -55,5 +56,9 @@ pub async fn route_get<AS: AddressbookStore, S: SubscriptionStore>(
         ))
         .unwrap(),
     );
-    Ok(resp.body(Body::new(vcf)).unwrap())
+    if matches!(method, Method::HEAD) {
+        Ok(resp.body(Body::empty()).unwrap())
+    } else {
+        Ok(resp.body(Body::new(vcf)).unwrap())
+    }
 }

crates/carddav/src/addressbook/methods/mkcol.rs

@@ -88,15 +88,8 @@ pub async fn route_mkcol<AS: AddressbookStore, S: SubscriptionStore>(
         }
     }
 
-    match addr_store.insert_addressbook(addressbook).await {
-        // TODO: The spec says we should return a mkcol-response.
-        // However, it works without one but breaks on iPadOS when using an empty one :)
-        Ok(()) => Ok(StatusCode::CREATED.into_response()),
-        Err(err) => {
-            dbg!(err.to_string());
-            Err(err.into())
-        }
-    }
+    addr_store.insert_addressbook(addressbook).await?;
+    Ok(StatusCode::CREATED.into_response())
 }
 
 #[cfg(test)]

crates/carddav/src/addressbook/methods/report/addressbook_multiget.rs

@@ -81,7 +81,7 @@ pub async fn handle_addressbook_multiget<AS: AddressbookStore>(
                 object,
                 principal: principal.to_owned(),
             }
-            .propfind(&path, prop, puri, user)?,
+            .propfind(&path, prop, None, puri, user)?,
         );
     }
 

crates/carddav/src/addressbook/methods/report/sync_collection.rs

@@ -39,7 +39,7 @@ pub async fn handle_sync_collection<AS: AddressbookStore>(
                 object,
                 principal: principal.to_owned(),
             }
-            .propfind(&path, &sync_collection.prop, puri, user)?,
+            .propfind(&path, &sync_collection.prop, None, puri, user)?,
         );
     }
 

crates/carddav/src/principal/mod.rs

@@ -53,7 +53,13 @@ impl Resource for PrincipalResource {
                 PrincipalPropWrapper::Principal(match prop {
                     PrincipalPropName::PrincipalUrl => PrincipalProp::PrincipalUrl(principal_href),
                     PrincipalPropName::AddressbookHomeSet => {
-                        PrincipalProp::AddressbookHomeSet(principal_href)
+                        PrincipalProp::AddressbookHomeSet(AddressbookHomeSet(
+                            self.principal
+                                .memberships()
+                                .iter()
+                                .map(|principal| puri.principal_uri(principal).into())
+                                .collect(),
+                        ))
                     }
                     PrincipalPropName::PrincipalAddress => PrincipalProp::PrincipalAddress(None),
                     PrincipalPropName::GroupMembership => {

crates/carddav/src/principal/prop.rs

@@ -22,11 +22,14 @@ pub enum PrincipalProp {
 
     // CardDAV (RFC 6352)
     #[xml(ns = "rustical_dav::namespace::NS_CARDDAV")]
-    AddressbookHomeSet(HrefElement),
+    AddressbookHomeSet(AddressbookHomeSet),
     #[xml(ns = "rustical_dav::namespace::NS_CARDDAV")]
     PrincipalAddress(Option<HrefElement>),
 }
 
+#[derive(XmlDeserialize, XmlSerialize, PartialEq, Clone)]
+pub struct AddressbookHomeSet(#[xml(ty = "untagged", flatten)] pub Vec<HrefElement>);
+
 #[derive(XmlDeserialize, XmlSerialize, PartialEq, Clone, EnumVariants, PropName)]
 #[xml(unit_variants_ident = "PrincipalPropWrapperName", untagged)]
 pub enum PrincipalPropWrapper {

crates/dav/src/resource/axum_methods.rs

@@ -18,11 +18,6 @@ pub trait AxumMethods: Sized + Send + Sync + 'static {
         None
     }
 
-    #[inline]
-    fn head() -> Option<MethodFunction<Self>> {
-        None
-    }
-
     #[inline]
     fn post() -> Option<MethodFunction<Self>> {
         None
@@ -58,8 +53,6 @@ pub trait AxumMethods: Sized + Send + Sync + 'static {
         }
         if Self::get().is_some() {
             allow.push(Method::GET);
-        }
-        if Self::head().is_some() {
             allow.push(Method::HEAD);
         }
         if Self::post().is_some() {

crates/dav/src/resource/axum_service.rs

@@ -72,16 +72,11 @@ where
                     return svc(self.resource_service.clone(), req);
                 }
             }
-            "GET" => {
+            "GET" | "HEAD" => {
                 if let Some(svc) = RS::get() {
                     return svc(self.resource_service.clone(), req);
                 }
             }
-            "HEAD" => {
-                if let Some(svc) = RS::head() {
-                    return svc(self.resource_service.clone(), req);
-                }
-            }
             "POST" => {
                 if let Some(svc) = RS::post() {
                     return svc(self.resource_service.clone(), req);

crates/dav/src/resource/methods/propfind.rs

@@ -64,6 +64,7 @@ pub(crate) async fn route_propfind<R: ResourceService>(
         } else {
             PropfindElement {
                 prop: PropfindType::Allprop,
+                include: None,
             }
         };
     let propfind_member: PropfindElement<<<R::MemberType as Resource>::Prop as PropName>::Names> =
@@ -72,6 +73,7 @@ pub(crate) async fn route_propfind<R: ResourceService>(
         } else {
             PropfindElement {
                 prop: PropfindType::Allprop,
+                include: None,
             }
         };
 
@@ -82,13 +84,20 @@ pub(crate) async fn route_propfind<R: ResourceService>(
             member_responses.push(member.propfind(
                 &format!("{}/{}", path.trim_end_matches('/'), member.get_name()),
                 &propfind_member.prop,
+                propfind_member.include.as_ref(),
                 puri,
                 principal,
             )?);
         }
     }
 
-    let response = resource.propfind(path, &propfind_self.prop, puri, principal)?;
+    let response = resource.propfind(
+        path,
+        &propfind_self.prop,
+        propfind_self.include.as_ref(),
+        puri,
+        principal,
+    )?;
 
     Ok(MultistatusElement {
         responses: vec![response],

crates/dav/src/resource/mod.rs

@@ -106,6 +106,7 @@ pub trait Resource: Clone + Send + 'static {
         &self,
         path: &str,
         prop: &PropfindType<<Self::Prop as PropName>::Names>,
+        include: Option<&PropElement<<Self::Prop as PropName>::Names>>,
         principal_uri: &impl PrincipalUri,
         principal: &Self::Principal,
     ) -> Result<ResponseElement<Self::Prop>, Self::Error> {
@@ -115,36 +116,40 @@ pub trait Resource: Clone + Send + 'static {
             path.push('/');
         }
 
-        // TODO: Support include element
-        let (props, invalid_props): (HashSet<<Self::Prop as PropName>::Names>, Vec<_>) = match prop
-        {
-            PropfindType::Propname => {
-                let props = Self::list_props()
-                    .into_iter()
-                    .map(|(ns, tag)| (ns.map(NamespaceOwned::from), tag.to_string()))
-                    .collect_vec();
+        let (mut props, mut invalid_props): (HashSet<<Self::Prop as PropName>::Names>, Vec<_>) =
+            match prop {
+                PropfindType::Propname => {
+                    let props = Self::list_props()
+                        .into_iter()
+                        .map(|(ns, tag)| (ns.map(NamespaceOwned::from), tag.to_string()))
+                        .collect_vec();
 
-                return Ok(ResponseElement {
-                    href: path.to_owned(),
-                    propstat: vec![PropstatWrapper::TagList(PropstatElement {
-                        prop: TagList::from(props),
-                        status: StatusCode::OK,
-                    })],
-                    ..Default::default()
-                });
-            }
-            PropfindType::Allprop => (
-                Self::list_props()
-                    .iter()
-                    .map(|(_ns, name)| <Self::Prop as PropName>::Names::from_str(name).unwrap())
-                    .collect(),
-                vec![],
-            ),
-            PropfindType::Prop(PropElement(valid_tags, invalid_tags)) => (
-                valid_tags.iter().cloned().collect(),
-                invalid_tags.to_owned(),
-            ),
-        };
+                    return Ok(ResponseElement {
+                        href: path.to_owned(),
+                        propstat: vec![PropstatWrapper::TagList(PropstatElement {
+                            prop: TagList::from(props),
+                            status: StatusCode::OK,
+                        })],
+                        ..Default::default()
+                    });
+                }
+                PropfindType::Allprop => (
+                    Self::list_props()
+                        .iter()
+                        .map(|(_ns, name)| <Self::Prop as PropName>::Names::from_str(name).unwrap())
+                        .collect(),
+                    vec![],
+                ),
+                PropfindType::Prop(PropElement(valid_tags, invalid_tags)) => (
+                    valid_tags.iter().cloned().collect(),
+                    invalid_tags.to_owned(),
+                ),
+            };
+
+        if let Some(PropElement(valid_tags, invalid_tags)) = include {
+            props.extend(valid_tags.clone());
+            invalid_props.extend(invalid_tags.to_owned());
+        }
 
         let prop_responses = props
             .into_iter()

crates/dav/src/xml/propfind.rs

@@ -11,10 +11,11 @@ use rustical_xml::XmlRootTag;
 pub struct PropfindElement<PN: XmlDeserialize> {
     #[xml(ty = "untagged")]
     pub prop: PropfindType<PN>,
+    #[xml(ns = "crate::namespace::NS_DAV")]
+    pub include: Option<PropElement<PN>>,
 }
 
 #[derive(Debug, Clone, PartialEq)]
-// pub struct PropElement<PN: XmlDeserialize = Propname>(#[xml(ty = "untagged", flatten)] pub Vec<PN>);
 pub struct PropElement<PN: XmlDeserialize>(
     // valid
     pub Vec<PN>,

crates/dav/src/xml/resourcetype.rs

@@ -33,7 +33,13 @@ mod tests {
         .unwrap();
         assert_eq!(
             out,
-            "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<document><resourcetype><displayname xmlns=\"DAV:\"/><calendar-color xmlns=\"http://calendarserver.org/ns/\"/></resourcetype></document>"
+            r#"<?xml version="1.0" encoding="utf-8"?>
+<document>
+    <resourcetype>
+        <displayname xmlns="DAV:"/>
+        <calendar-color xmlns="http://calendarserver.org/ns/"/>
+    </resourcetype>
+</document>"#
         )
     }
 }

crates/frontend/js-components/lib/create-addressbook-form.ts

@@ -2,6 +2,7 @@ import { html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators.js";
 import { Ref, createRef, ref } from 'lit/directives/ref.js';
 import { createClient } from "webdav";
+import { escapeXml } from ".";
 
 @customElement("create-addressbook-form")
 export class CreateAddressbookForm extends LitElement {
@@ -17,15 +18,15 @@ export class CreateAddressbookForm extends LitElement {
   client = createClient("/carddav")
 
   @property()
-  user: String = ''
+  user: string = ''
   @property()
-  principal: String = ''
+  principal: string = ''
   @property()
-  addr_id: String = ''
+  addr_id: string = ''
   @property()
-  displayname: String = ''
+  displayname: string = ''
   @property()
-  description: String = ''
+  description: string = ''
 
   dialog: Ref<HTMLDialogElement> = createRef()
   form: Ref<HTMLFormElement> = createRef()
@@ -38,7 +39,12 @@ export class CreateAddressbookForm extends LitElement {
         <form @submit=${this.submit} ${ref(this.form)}>
           <label>
             principal (for group addressbooks)
-            <input type="text" name="principal" value=${this.user} @change=${e => this.principal = e.target.value} />
+            <select name="principal" value=${this.user} @change=${e => this.principal = e.target.value}>
+              <option value=${this.user}>${this.user}</option>
+              ${window.rusticalUser.memberships.map(membership => html`
+                <option value=${membership}>${membership}</option>
+              `)}
+            </select>
           </label>
           <br>
           <label>
@@ -74,14 +80,13 @@ export class CreateAddressbookForm extends LitElement {
       alert("Empty displayname")
       return
     }
-    // TODO: Escape user input: There's not really a security risk here but would be nicer
     await this.client.createDirectory(`/principal/${this.principal || this.user}/${this.addr_id}`, {
       data: `
       <mkcol xmlns="DAV:" xmlns:CARD="urn:ietf:params:xml:ns:carddav">
         <set>
           <prop>
-            <displayname>${this.displayname}</displayname>
-            ${this.description ? `<CARD:addressbook-description>${this.description}</CARD:addressbook-description>` : ''}
+            <displayname>${escapeXml(this.displayname)}</displayname>
+            ${this.description ? `<CARD:addressbook-description>${escapeXml(this.description)}</CARD:addressbook-description>` : ''}
           </prop>
         </set>
       </mkcol>

crates/frontend/js-components/lib/create-calendar-form.ts

@@ -2,6 +2,7 @@ import { html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators.js";
 import { Ref, createRef, ref } from 'lit/directives/ref.js';
 import { createClient } from "webdav";
+import { escapeXml } from ".";
 
 @customElement("create-calendar-form")
 export class CreateCalendarForm extends LitElement {
@@ -16,19 +17,21 @@ export class CreateCalendarForm extends LitElement {
   client = createClient("/caldav")
 
   @property()
-  user: String = ''
+  user: string = ''
   @property()
-  principal: String = ''
+  principal: string = ''
   @property()
-  cal_id: String = ''
+  cal_id: string = ''
   @property()
-  displayname: String = ''
+  displayname: string = ''
   @property()
-  description: String = ''
+  description: string = ''
   @property()
-  color: String = ''
+  color: string = ''
   @property()
-  subscriptionUrl: String = ''
+  isSubscription: boolean = false
+  @property()
+  subscriptionUrl: string = ''
   @property()
   components: Set<"VEVENT" | "VTODO" | "VJOURNAL"> = new Set()
 
@@ -43,8 +46,13 @@ export class CreateCalendarForm extends LitElement {
         <h3>Create calendar</h3>
         <form @submit=${this.submit} ${ref(this.form)}>
           <label>
-            principal (for group calendar)
-            <input type="text" name="principal" value=${this.user} @change=${e => this.principal = e.target.value} />
+            principal (for group calendars)
+            <select name="principal" value=${this.user} @change=${e => this.principal = e.target.value}>
+              <option value=${this.user}>${this.user}</option>
+              ${window.rusticalUser.memberships.map(membership => html`
+                <option value=${membership}>${membership}</option>
+              `)}
+            </select>
           </label>
           <br>
           <label>
@@ -67,11 +75,20 @@ export class CreateCalendarForm extends LitElement {
             <input type="color" name="color"  @change=${e => this.color = e.target.value} />
           </label>
           <br>
+          <br>
           <label>
-            Subscription URL
-            <input type="text" name="subscription_url" @change=${e => this.subscriptionUrl = e.target.value}  />
+            Calendar is subscription to external calendar
+            <input type="checkbox" name="is_subscription" @change=${e => this.isSubscription = e.target.checked}  />
           </label>
           <br>
+          ${this.isSubscription ? html`
+            <label>
+              Subscription URL
+              <input type="text" name="subscription_url" @change=${e => this.subscriptionUrl = e.target.value}  />
+            </label>
+            <br>
+          `: html``}
+          <br>
           ${["VEVENT", "VTODO", "VJOURNAL"].map(comp => html`
             <label>
               Support ${comp}
@@ -107,12 +124,12 @@ export class CreateCalendarForm extends LitElement {
       <mkcol xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CS="http://calendarserver.org/ns/" xmlns:ICAL="http://apple.com/ns/ical/">
         <set>
           <prop>
-            <displayname>${this.displayname}</displayname>
-            ${this.description ? `<CAL:calendar-description>${this.description}</CAL:calendar-description>` : ''}
-            ${this.color ? `<ICAL:calendar-color>${this.color}</ICAL:calendar-color>` : ''}
-            ${this.subscriptionUrl ? `<CS:source><href>${this.subscriptionUrl}</href></CS:source>` : ''}
+            <displayname>${escapeXml(this.displayname)}</displayname>
+            ${this.description ? `<CAL:calendar-description>${escapeXml(this.description)}</CAL:calendar-description>` : ''}
+            ${this.color ? `<ICAL:calendar-color>${escapeXml(this.color)}</ICAL:calendar-color>` : ''}
+            ${(this.isSubscription && this.subscriptionUrl) ? `<CS:source><href>${escapeXml(this.subscriptionUrl)}</href></CS:source>` : ''}
             <CAL:supported-calendar-component-set>
-              ${Array.from(this.components.keys()).map(comp => `<CAL:comp name="${comp}" />`).join('\n')}
+              ${Array.from(this.components.keys()).map(comp => `<CAL:comp name="${escapeXml(comp)}" />`).join('\n')}
             </CAL:supported-calendar-component-set>
           </prop>
         </set>

crates/frontend/js-components/lib/delete-button.ts

@@ -1,6 +1,5 @@
 import { html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators.js";
-import { createClient } from "webdav";
 
 @customElement("delete-button")
 export class DeleteButton extends LitElement {

crates/frontend/js-components/lib/global.d.ts

@@ -0,0 +1,9 @@
+interface Window {
+  rusticalUser: {
+    id: String,
+    displayname: String | null,
+    memberships: Array<String>,
+    principal_type: "individual" | "group" | "room" | String
+  }
+}
+

crates/frontend/js-components/lib/index.ts

@@ -0,0 +1,7 @@
+export function escapeXml(unsafe: string): string {
+  return unsafe.replace(/&/g, '&')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&apos;')
+}

crates/frontend/public/assets/js/create-addressbook-form.mjs

@@ -1,6 +1,6 @@
 import { i, x } from "./lit-z6_uA4GX.mjs";
 import { n as n$1, t } from "./property-D0NJdseG.mjs";
-import { e, n } from "./ref-CPp9J0V5.mjs";
+import { e, n, a as escapeXml } from "./index-b86iLJlP.mjs";
 import { a as an } from "./webdav-D0R7xCzX.mjs";
 var __defProp = Object.defineProperty;
 var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
@@ -35,7 +35,12 @@ let CreateAddressbookForm = class extends i {
         <form @submit=${this.submit} ${n(this.form)}>
           <label>
             principal (for group addressbooks)
-            <input type="text" name="principal" value=${this.user} @change=${(e2) => this.principal = e2.target.value} />
+            <select name="principal" value=${this.user} @change=${(e2) => this.principal = e2.target.value}>
+              <option value=${this.user}>${this.user}</option>
+              ${window.rusticalUser.memberships.map((membership) => x`
+                <option value=${membership}>${membership}</option>
+              `)}
+            </select>
           </label>
           <br>
           <label>
@@ -79,8 +84,8 @@ let CreateAddressbookForm = class extends i {
       <mkcol xmlns="DAV:" xmlns:CARD="urn:ietf:params:xml:ns:carddav">
         <set>
           <prop>
-            <displayname>${this.displayname}</displayname>
-            ${this.description ? `<CARD:addressbook-description>${this.description}</CARD:addressbook-description>` : ""}
+            <displayname>${escapeXml(this.displayname)}</displayname>
+            ${this.description ? `<CARD:addressbook-description>${escapeXml(this.description)}</CARD:addressbook-description>` : ""}
           </prop>
         </set>
       </mkcol>

crates/frontend/public/assets/js/create-calendar-form.mjs

@@ -1,6 +1,6 @@
 import { i, x } from "./lit-z6_uA4GX.mjs";
 import { n as n$1, t } from "./property-D0NJdseG.mjs";
-import { e, n } from "./ref-CPp9J0V5.mjs";
+import { e, n, a as escapeXml } from "./index-b86iLJlP.mjs";
 import { a as an } from "./webdav-D0R7xCzX.mjs";
 var __defProp = Object.defineProperty;
 var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
@@ -22,6 +22,7 @@ let CreateCalendarForm = class extends i {
     this.displayname = "";
     this.description = "";
     this.color = "";
+    this.isSubscription = false;
     this.subscriptionUrl = "";
     this.components = /* @__PURE__ */ new Set();
     this.dialog = e();
@@ -37,8 +38,13 @@ let CreateCalendarForm = class extends i {
         <h3>Create calendar</h3>
         <form @submit=${this.submit} ${n(this.form)}>
           <label>
-            principal (for group calendar)
-            <input type="text" name="principal" value=${this.user} @change=${(e2) => this.principal = e2.target.value} />
+            principal (for group calendars)
+            <select name="principal" value=${this.user} @change=${(e2) => this.principal = e2.target.value}>
+              <option value=${this.user}>${this.user}</option>
+              ${window.rusticalUser.memberships.map((membership) => x`
+                <option value=${membership}>${membership}</option>
+              `)}
+            </select>
           </label>
           <br>
           <label>
@@ -61,11 +67,20 @@ let CreateCalendarForm = class extends i {
             <input type="color" name="color"  @change=${(e2) => this.color = e2.target.value} />
           </label>
           <br>
+          <br>
           <label>
-            Subscription URL
-            <input type="text" name="subscription_url" @change=${(e2) => this.subscriptionUrl = e2.target.value}  />
+            Calendar is subscription to external calendar
+            <input type="checkbox" name="is_subscription" @change=${(e2) => this.isSubscription = e2.target.checked}  />
           </label>
           <br>
+          ${this.isSubscription ? x`
+            <label>
+              Subscription URL
+              <input type="text" name="subscription_url" @change=${(e2) => this.subscriptionUrl = e2.target.value}  />
+            </label>
+            <br>
+          ` : x``}
+          <br>
           ${["VEVENT", "VTODO", "VJOURNAL"].map((comp) => x`
             <label>
               Support ${comp}
@@ -104,12 +119,12 @@ let CreateCalendarForm = class extends i {
       <mkcol xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CS="http://calendarserver.org/ns/" xmlns:ICAL="http://apple.com/ns/ical/">
         <set>
           <prop>
-            <displayname>${this.displayname}</displayname>
-            ${this.description ? `<CAL:calendar-description>${this.description}</CAL:calendar-description>` : ""}
-            ${this.color ? `<ICAL:calendar-color>${this.color}</ICAL:calendar-color>` : ""}
-            ${this.subscriptionUrl ? `<CS:source><href>${this.subscriptionUrl}</href></CS:source>` : ""}
+            <displayname>${escapeXml(this.displayname)}</displayname>
+            ${this.description ? `<CAL:calendar-description>${escapeXml(this.description)}</CAL:calendar-description>` : ""}
+            ${this.color ? `<ICAL:calendar-color>${escapeXml(this.color)}</ICAL:calendar-color>` : ""}
+            ${this.isSubscription && this.subscriptionUrl ? `<CS:source><href>${escapeXml(this.subscriptionUrl)}</href></CS:source>` : ""}
             <CAL:supported-calendar-component-set>
-              ${Array.from(this.components.keys()).map((comp) => `<CAL:comp name="${comp}" />`).join("\n")}
+              ${Array.from(this.components.keys()).map((comp) => `<CAL:comp name="${escapeXml(comp)}" />`).join("\n")}
             </CAL:supported-calendar-component-set>
           </prop>
         </set>
@@ -138,6 +153,9 @@ __decorateClass([
 __decorateClass([
   n$1()
 ], CreateCalendarForm.prototype, "color", 2);
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "isSubscription", 2);
 __decorateClass([
   n$1()
 ], CreateCalendarForm.prototype, "subscriptionUrl", 2);

crates/frontend/public/assets/js/index-b86iLJlP.mjs

@@ -122,7 +122,11 @@ const o = /* @__PURE__ */ new WeakMap(), n = e$1(class extends f {
     this.rt(this.ct);
   }
 });
+function escapeXml(unsafe) {
+  return unsafe.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;").replace(/'/g, "&apos;");
+}
 export {
+  escapeXml as a,
   e,
   n
 };

crates/frontend/public/assets/style.css

@@ -205,10 +205,21 @@ ul.collection-list {
 
   li.collection-list-item {
     list-style: none;
-    display: contents;
+    display: block;
+    position: relative;
+    background: color-mix(in srgb, var(--background-color), var(--dilute-color) 5%);
+    border: 2px solid var(--border-color);
+    border-radius: 12px;
+    margin: 12px 0;
+    box-shadow: 4px 2px 12px -6px black;
+    overflow: hidden;
 
     a {
-      background: color-mix(in srgb, var(--background-color), var(--dilute-color) 5%);
+      position: absolute;
+      inset: 2px;
+    }
+
+    .inner {
       display: grid;
       min-height: 80px;
       height: fit-content;
@@ -227,11 +238,15 @@ ul.collection-list {
       text-decoration: none;
       padding-left: 12px;
 
-      border: 2px solid var(--border-color);
-      border-radius: 12px;
-      margin: 12px;
-      box-shadow: 4px 2px 12px -6px black;
-      overflow: hidden;
+      position: relative;
+      z-index: 1;
+      pointer-events: none;
+
+      a,
+      button {
+        pointer-events: all;
+        cursor: pointer;
+      }
 
       .title {
         font-weight: bold;
@@ -283,10 +298,10 @@ ul.collection-list {
         display: flex;
         gap: 12px;
       }
+    }
 
-      &:hover {
-        background: color-mix(in srgb, var(--background-color), var(--dilute-color) 10%);
-      }
+    &:hover {
+      background: color-mix(in srgb, var(--background-color), var(--dilute-color) 10%);
     }
   }
 }
@@ -310,12 +325,20 @@ footer {
 }
 
 input[type="text"],
-input[type="password"] {
+input[type="password"],
+input[type="color"],
+select {
   background: color-mix(in srgb, var(--background-color), var(--dilute-color) 10%);
   border: 2px solid var(--border-color);
   padding: 6px 6px;
   color: var(--text-on-background-color);
   margin: 2px;
+  border-radius: 8px;
+
+  &:hover,
+  &:focus {
+    background: color-mix(in srgb, var(--background-color), var(--dilute-color) 20%);
+  }
 }
 
 svg.icon {

crates/frontend/public/templates/components/sections/addressbooks_section.html

@@ -2,7 +2,8 @@
 <ul class="collection-list">
   {% for (meta, addressbook) in addressbooks %}
   <li class="collection-list-item">
-    <a href="/frontend/user/{{ addressbook.principal }}/addressbook/{{ addressbook.id}}">
+    <a href="/frontend/user/{{ addressbook.principal }}/addressbook/{{ addressbook.id}}"></a>
+    <div class="inner">
       <span class="title">
         {%- if addressbook.principal != user.id -%}{{ addressbook.principal }}/{%- endif -%}
         {{ addressbook.displayname.to_owned().unwrap_or(addressbook.id.to_owned()) }}
@@ -21,7 +22,7 @@
       <div class="metadata">
         {{ meta.len }} ({{ meta.size | filesizeformat }}) objects, {{ meta.deleted_len }} ({{ meta.deleted_size | filesizeformat }}) deleted objects
       </div>
-    </a>
+    </div>
   </li>
   {% else %}
   You do not have any addressbooks yet
@@ -32,7 +33,8 @@
 <ul class="collection-list">
   {% for (meta, addressbook) in deleted_addressbooks %}
   <li class="collection-list-item">
-    <a href="/frontend/user/{{ addressbook.principal }}/addressbook/{{ addressbook.id}}">
+    <a href="/frontend/user/{{ addressbook.principal }}/addressbook/{{ addressbook.id}}"></a>
+    <div class="inner">
       <span class="title">
         {%- if addressbook.principal != user.id -%}{{ addressbook.principal }}/{%- endif -%}
         {{ addressbook.displayname.to_owned().unwrap_or(addressbook.id.to_owned()) }}
@@ -50,7 +52,7 @@
       <div class="metadata">
         {{ meta.len }} ({{ meta.size | filesizeformat }}) objects, {{ meta.deleted_len }} ({{ meta.deleted_size | filesizeformat }}) deleted objects
       </div>
-    </a>
+    </div>
   </li>
   {% endfor %}
 </ul>

crates/frontend/public/templates/components/sections/calendars_section.html

@@ -3,7 +3,8 @@
   {% for (meta, calendar) in calendars %}
   {% let color = calendar.color.to_owned().unwrap_or("transparent".to_owned()) %}
   <li class="collection-list-item" style="--color: {{ color }}">
-    <a href="/frontend/user/{{ calendar.principal }}/calendar/{{ calendar.id }}">
+    <a href="/frontend/user/{{ calendar.principal }}/calendar/{{ calendar.id }}"></a>
+    <div class="inner">
       <span class="title">
         {%- if calendar.principal != user.id -%}{{ calendar.principal }}/{%- endif -%}
         {{ calendar.displayname.to_owned().unwrap_or(calendar.id.to_owned()) }}
@@ -31,7 +32,7 @@
         {{ meta.len }} ({{ meta.size | filesizeformat }}) objects, {{ meta.deleted_len }} ({{ meta.deleted_size | filesizeformat }}) deleted objects
       </div>
       <div class="color-chip"></div>
-    </a>
+    </div>
   </li>
   {% else %}
   You do not have any calendars yet
@@ -43,7 +44,8 @@
   {% for (meta, calendar) in deleted_calendars %}
   {% let color = calendar.color.to_owned().unwrap_or("transparent".to_owned()) %}
   <li class="collection-list-item" style="--color: {{ color }}">
-    <a href="/frontend/user/{{ calendar.principal }}/calendar/{{ calendar.id}}">
+    <a href="/frontend/user/{{ calendar.principal }}/calendar/{{ calendar.id}}"></a>
+    <div class="inner">
       <span class="title">
         {%- if calendar.principal != user.id -%}{{ calendar.principal }}/{%- endif -%}
         {{ calendar.displayname.to_owned().unwrap_or(calendar.id.to_owned()) }}
@@ -67,7 +69,7 @@
         {{ meta.len }} ({{ meta.size | filesizeformat }}) objects, {{ meta.deleted_len }} ({{ meta.deleted_size | filesizeformat }}) deleted objects
       </div>
       <div class="color-chip"></div>
-    </a>
+    </div>
   </li>
   {% endfor %}
 </ul>

crates/frontend/public/templates/pages/user.html

@@ -1,6 +1,10 @@
 {% extends "layouts/default.html" %}
 
 {% block imports %}
+<template id="data-rustical-user">{{ user|json }}</template>
+<script>
+window.rusticalUser = JSON.parse(document.querySelector('#data-rustical-user').innerHTML)
+</script>
 <script type="module" src="/frontend/assets/js/create-calendar-form.mjs" async></script>
 <script type="module" src="/frontend/assets/js/create-addressbook-form.mjs" async></script>
 <script type="module" src="/frontend/assets/js/delete-button.mjs" async></script>

crates/frontend/src/routes/app_token.rs

@@ -64,7 +64,7 @@ pub async fn route_post_app_token<AP: AuthenticationProvider>(
             token_name: name,
             account_description: format!("{}@{}", &user.id, &hostname),
             hostname: hostname.clone(),
-            caldav_principal_url: format!("https://{hostname}/caldav/principal/{user_id}"),
+            caldav_principal_url: format!("https://{hostname}/caldav-compat/principal/{user_id}"),
             carddav_principal_url: format!("https://{hostname}/carddav/principal/{user_id}"),
             user: user.id.to_owned(),
             token,
@@ -79,13 +79,12 @@ pub async fn route_post_app_token<AP: AuthenticationProvider>(
         hdrs.typed_insert(
             ContentType::from_str("application/x-apple-aspen-config; charset=utf-8").unwrap(),
         );
-        let filename = format!("rustical-{}.mobileconfig", user_id);
+        let filename = format!("rustical-{user_id}.mobileconfig");
         let filename = utf8_percent_encode(&filename, CONTROLS);
         hdrs.insert(
             header::CONTENT_DISPOSITION,
             HeaderValue::from_str(&format!(
-                "attachement; filename*=UTF-8''{} filename={}",
-                filename, filename
+                "attachement; filename*=UTF-8''{filename} filename={filename}",
             ))
             .unwrap(),
         );

crates/store/src/auth/principal.rs

@@ -25,6 +25,7 @@ pub struct Principal {
     pub displayname: Option<String>,
     #[serde(default)]
     pub principal_type: PrincipalType,
+    #[serde(skip_serializing)]
     pub password: Option<Secret<String>>,
     #[serde(default)]
     pub memberships: Vec<String>,

crates/store/src/auth/principal_type.rs

@@ -13,7 +13,7 @@ pub enum PrincipalType {
     Resource,
     Room,
     Unknown,
-    // TODO: X-Name, IANA-token
+    // X-Name, IANA-token
 }
 
 impl TryFrom<&str> for PrincipalType {

crates/store_sqlite/src/principal_store.rs

@@ -206,7 +206,7 @@ impl AuthenticationProvider for SqlitePrincipalStore {
                 None,
                 None,
                 Params {
-                    rounds: 100,
+                    rounds: 10,
                     ..Default::default()
                 },
                 &salt,

crates/xml/src/se.rs

@@ -43,7 +43,7 @@ pub trait XmlSerializeRoot {
 
     fn serialize_to_string(&self) -> std::io::Result<String> {
         let mut buf: Vec<_> = b"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".into();
-        let mut writer = quick_xml::Writer::new(&mut buf);
+        let mut writer = quick_xml::Writer::new_with_indent(&mut buf, b' ', 4);
         self.serialize_root(&mut writer)?;
         Ok(String::from_utf8_lossy(&buf).to_string())
     }

crates/xml/tests/se_enum.rs

@@ -22,6 +22,11 @@ fn test_struct_value_tagged() {
     .unwrap();
     assert_eq!(
         out,
-        "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<propfind><prop><test>asd</test></prop></propfind>"
+        r#"<?xml version="1.0" encoding="utf-8"?>
+<propfind>
+    <prop>
+        <test>asd</test>
+    </prop>
+</propfind>"#
     );
 }

crates/xml/tests/se_struct.rs

@@ -71,7 +71,11 @@ fn test_struct_value_tagged() {
     .unwrap();
     assert_eq!(
         out,
-        "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<document><href>okay</href><num>123</num></document>"
+        r#"<?xml version="1.0" encoding="utf-8"?>
+<document>
+    <href>okay</href>
+    <num>123</num>
+</document>"#
     );
 }
 
@@ -91,7 +95,8 @@ fn test_struct_value_untagged() {
     .unwrap();
     assert_eq!(
         out,
-        "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<document>okays</document>"
+        r#"<?xml version="1.0" encoding="utf-8"?>
+<document>okays</document>"#
     );
 }
 
@@ -111,7 +116,11 @@ fn test_struct_vec() {
     .unwrap();
     assert_eq!(
         out,
-        "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<document><href>okay</href><href>wow</href></document>"
+        r#"<?xml version="1.0" encoding="utf-8"?>
+<document>
+    <href>okay</href>
+    <href>wow</href>
+</document>"#
     );
 }
 
@@ -141,7 +150,10 @@ fn test_struct_serialize_with() {
     .unwrap();
     assert_eq!(
         out,
-        "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<document><href>OKAY</href></document>"
+        r#"<?xml version="1.0" encoding="utf-8"?>
+<document>
+    <href>OKAY</href>
+</document>"#
     );
 }
 

docs/setup/client.md

@@ -0,0 +1,74 @@
+# Client Setup
+
+## Common
+
+Following resources are available.
+
+```
+/.well-known/caldav
+# CalDAV root
+/caldav
+# Principal home
+/caldav/principal/<user_id>
+# Calendar home
+/caldav/principal/<user_id>/<calendar_id>
+/caldav/principal/<user_id>/_birthdays_<addressbook_id>
+
+# CalDAV root
+/caldav-compat
+/caldav-compat/principal...
+```
+
+```
+/.well-known/carddav
+# CardDAV root
+/carddav
+# Principal home
+/carddav/principal/<user_id>
+# Addressbook home
+/carddav/principal/<user_id>/<addressbook_id>
+```
+
+### Authentication
+
+Authenticate with HTTP Basic authentication using your user id and a generated app token.
+
+## `/caldav` vs `/caldav-compat` (relevant for group sharing)
+
+To discover shared calendars the `calendar-home-set` property is used to list all principals the user has access to.
+However, some clients don't support `calendar-home-set` containing multiple paths (e.g. Apple Calendar).
+
+As a workaround `/caldav-compat` offers the same endpoints as `/caldav` with the only difference being that it does not return all calendar homes in `calendar-home-set`.
+This means that clients under this path will probably not auto-discover group calendars so you can instead add them one-by-one using the principal path `/caldav-compat/principal/<principal_id>`.
+
+## DAVx5
+
+You can set up DAVx5 through the Nextcloud login flow. Collections including group collections will automatically be discovered.
+
+## Apple Calendar
+
+You can download a configuration profile from the frontend in the app token section.
+
+**Note**: Since Apple Calendar does not properly support the `calendar-home-set` property the `/caldav-compat` endpoints should be used.
+That also means that Apple Calendar is not able to automatically discover group collections so in that case you'll have to manually add all principals with `/caldav-compat/principal/<principal_id>`.
+
+## Evolution
+
+Set up a collection account in the account settings.
+Evolution correctly uses all calendar homes so group collections work properly.
+
+## Home Assistant CalDAV integration
+
+The underlying library `python-caldav` does not support multiple calendar homes so you should use the `/caldav-compat` endpoints.
+
+As URL specify
+
+```
+https://<your-host>/caldav-compat
+```
+
+For group collections explicitly specify
+
+```
+https://<your-host>/caldav-compat/principal/<principal>
+```

mkdocs.yml

@@ -68,6 +68,7 @@ nav:
   - Installation:
       - installation/index.md
       - Configuration: installation/configuration.md
+  - Client Setup: setup/client.md
   - OpenID Connect: setup/oidc.md
   - Developers:
       - developers/index.md

src/app.rs

@@ -2,8 +2,8 @@ use crate::config::NextcloudLoginConfig;
 use axum::Router;
 use axum::body::Body;
 use axum::extract::Request;
-use axum::response::Response;
-use axum::routing::options;
+use axum::response::{Redirect, Response};
+use axum::routing::{any, options};
 use headers::{HeaderMapExt, UserAgent};
 use http::{HeaderValue, StatusCode};
 use rustical_caldav::caldav_router;
@@ -47,7 +47,19 @@ pub fn make_app<AS: AddressbookStore, CS: CalendarStore, S: SubscriptionStore>(
             auth_provider.clone(),
             combined_cal_store.clone(),
             subscription_store.clone(),
+            false,
         ))
+        .merge(caldav_router(
+            "/caldav-compat",
+            auth_provider.clone(),
+            combined_cal_store.clone(),
+            subscription_store.clone(),
+            true,
+        ))
+        .route(
+            "/.well-known/caldav",
+            any(async || Redirect::permanent("/caldav")),
+        )
         .merge(carddav_router(
             "/carddav",
             auth_provider.clone(),