486 lines
18 KiB
Rust
486 lines
18 KiB
Rust
/*
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* SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
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*
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* SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
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*/
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use super::assert_is_unique_uid;
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use crate::{
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DavError, DavErrorCondition, DavMethod,
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common::{
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ETag, ExtractETag,
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lock::{LockRequestHandler, ResourceState},
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uri::DavUriResource,
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},
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file::DavFileResource,
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fix_percent_encoding,
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};
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use calcard::{
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Entry, Parser,
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common::timezone::Tz,
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icalendar::{ICalendar, ICalendarComponentType},
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};
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use common::{DavName, Server, auth::AccessToken};
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use dav_proto::{
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RequestHeaders, Return,
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schema::{property::Rfc1123DateTime, response::CalCondition},
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};
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use directory::Permission;
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use groupware::{
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cache::GroupwareCache,
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calendar::{CalendarEvent, CalendarEventData},
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scheduling::{ItipMessages, event_create::itip_create, event_update::itip_update},
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};
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use http_proto::HttpResponse;
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use hyper::StatusCode;
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use std::collections::HashSet;
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use store::write::{BatchBuilder, now};
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use trc::AddContext;
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use types::{
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acl::Acl,
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collection::{Collection, SyncCollection},
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};
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pub(crate) trait CalendarUpdateRequestHandler: Sync + Send {
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fn handle_calendar_update_request(
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&self,
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access_token: &AccessToken,
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headers: &RequestHeaders<'_>,
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bytes: Vec<u8>,
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is_patch: bool,
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) -> impl Future<Output = crate::Result<HttpResponse>> + Send;
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}
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impl CalendarUpdateRequestHandler for Server {
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async fn handle_calendar_update_request(
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&self,
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access_token: &AccessToken,
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headers: &RequestHeaders<'_>,
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bytes: Vec<u8>,
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_is_patch: bool,
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) -> crate::Result<HttpResponse> {
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// Validate URI
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let resource = self
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.validate_uri(access_token, headers.uri)
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.await?
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.into_owned_uri()?;
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let account_id = resource.account_id;
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let resources = self
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.fetch_dav_resources(access_token, account_id, SyncCollection::Calendar)
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.await
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.caused_by(trc::location!())?;
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let resource_name = fix_percent_encoding(
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resource
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.resource
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.ok_or(DavError::Code(StatusCode::CONFLICT))?,
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);
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if bytes.len() > self.core.groupware.max_ical_size {
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return Err(DavError::Condition(DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::MaxResourceSize(self.core.groupware.max_ical_size as u32),
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)));
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}
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let ical_raw = std::str::from_utf8(&bytes).map_err(|_| {
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DavError::Condition(
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DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::SupportedCalendarData,
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)
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.with_details("Invalid UTF-8 in iCalendar data"),
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)
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})?;
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let ical = match Parser::new(ical_raw).entry() {
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Entry::ICalendar(ical) => ical,
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_ => {
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return Err(DavError::Condition(
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DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::SupportedCalendarData,
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)
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.with_details("Failed to parse iCalendar data"),
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));
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}
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};
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if let Some(resource) = resources.by_path(resource_name.as_ref()) {
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if resource.is_container() {
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return Err(DavError::Code(StatusCode::METHOD_NOT_ALLOWED));
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}
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// Validate ACL
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let parent_id = resource.parent_id().unwrap();
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let document_id = resource.document_id();
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if !access_token.is_member(account_id)
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&& !resources.has_access_to_container(access_token, parent_id, Acl::ModifyItems)
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{
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return Err(DavError::Code(StatusCode::FORBIDDEN));
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}
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// Update
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let event_ = self
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.get_archive(account_id, Collection::CalendarEvent, document_id)
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.await
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.caused_by(trc::location!())?
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.ok_or(DavError::Code(StatusCode::NOT_FOUND))?;
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let event = event_
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.to_unarchived::<CalendarEvent>()
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.caused_by(trc::location!())?;
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// Validate headers
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match self
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.validate_headers(
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access_token,
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headers,
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vec![ResourceState {
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account_id,
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collection: Collection::CalendarEvent,
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document_id: Some(document_id),
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etag: event.etag().into(),
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path: resource_name.as_ref(),
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..Default::default()
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}],
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Default::default(),
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DavMethod::PUT,
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)
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.await
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{
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Ok(_) => {}
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Err(DavError::Code(StatusCode::PRECONDITION_FAILED))
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if headers.ret == Return::Representation =>
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{
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return Ok(HttpResponse::new(StatusCode::PRECONDITION_FAILED)
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.with_content_type("text/calendar; charset=utf-8")
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.with_etag(event.etag())
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.with_last_modified(
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Rfc1123DateTime::new(i64::from(event.inner.modified)).to_string(),
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)
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.with_header("Preference-Applied", "return=representation")
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.with_binary_body(event.inner.data.event.to_string()));
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}
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Err(e) => return Err(e),
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}
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if ical == event.inner.data.event {
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// No changes, return existing event
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return Ok(HttpResponse::new(StatusCode::NO_CONTENT));
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}
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// Validate iCal
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if event.inner.data.event.uids().next().unwrap_or_default() != validate_ical(&ical)? {
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return Err(DavError::Condition(DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::NoUidConflict(resources.format_resource(resource).into()),
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)));
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}
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// Validate schedule tag
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if headers.if_schedule_tag.is_some()
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&& event.inner.schedule_tag.as_ref().map(|t| t.to_native())
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!= headers.if_schedule_tag
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{
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return Err(DavError::Code(StatusCode::PRECONDITION_FAILED));
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}
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// Obtain previous alarm
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let now = now() as i64;
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let prev_email_alarm = event.inner.data.next_alarm(now, Tz::Floating);
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// Build event
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let mut next_email_alarm = None;
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let mut new_event = event
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.deserialize::<CalendarEvent>()
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.caused_by(trc::location!())?;
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let old_ical = new_event.data.event;
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new_event.size = bytes.len() as u32;
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new_event.data = CalendarEventData::new(
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ical,
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Tz::Floating,
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self.core.groupware.max_ical_instances,
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&mut next_email_alarm,
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);
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// Scheduling
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let mut itip_messages = None;
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if self.core.groupware.itip_enabled
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&& !access_token.emails.is_empty()
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&& access_token.has_permission(Permission::CalendarSchedulingSend)
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&& new_event.data.event_range_end() > now
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{
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let result = if new_event.schedule_tag.is_some() {
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itip_update(
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&mut new_event.data.event,
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&old_ical,
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access_token.emails.as_slice(),
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)
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} else {
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itip_create(&mut new_event.data.event, access_token.emails.as_slice())
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};
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match result {
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Ok(messages) => {
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let mut is_organizer = false;
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if messages
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.iter()
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.map(|r| {
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is_organizer = r.from_organizer;
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r.to.len()
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})
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.sum::<usize>()
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< self.core.groupware.itip_outbound_max_recipients
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{
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// Only update schedule tag if the user is the organizer
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if is_organizer {
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if let Some(schedule_tag) = &mut new_event.schedule_tag {
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*schedule_tag += 1;
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} else {
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new_event.schedule_tag = Some(1);
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}
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}
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itip_messages = Some(ItipMessages::new(messages));
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} else {
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return Err(DavError::Condition(DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::MaxAttendeesPerInstance,
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)));
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}
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}
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Err(err) => {
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if let Some(failed_precondition) = err.failed_precondition() {
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return Err(DavError::Condition(
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DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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failed_precondition,
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)
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.with_details(err.to_string()),
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));
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}
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// Event changed, but there are no iTIP messages to send
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if let Some(schedule_tag) = &mut new_event.schedule_tag {
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*schedule_tag += 1;
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}
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}
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}
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}
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let nudge_queue = next_email_alarm.is_some() || itip_messages.is_some();
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// Validate quota
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let extra_bytes =
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(bytes.len() as u64).saturating_sub(u32::from(event.inner.size) as u64);
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if extra_bytes > 0 {
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self.has_available_quota(
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&self.get_resource_token(access_token, account_id).await?,
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extra_bytes,
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)
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.await?;
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}
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// Prepare write batch
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let mut batch = BatchBuilder::new();
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let schedule_tag = new_event.schedule_tag;
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let etag = new_event
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.update(access_token, event, account_id, document_id, &mut batch)
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.caused_by(trc::location!())?
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.etag();
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if prev_email_alarm != next_email_alarm {
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if let Some(prev_alarm) = prev_email_alarm {
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prev_alarm.delete_task(&mut batch);
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}
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if let Some(next_alarm) = next_email_alarm {
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next_alarm.write_task(&mut batch);
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}
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}
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if let Some(itip_messages) = itip_messages {
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itip_messages
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.queue(&mut batch)
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.caused_by(trc::location!())?;
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}
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self.commit_batch(batch).await.caused_by(trc::location!())?;
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if nudge_queue {
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self.notify_task_queue();
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}
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Ok(HttpResponse::new(StatusCode::NO_CONTENT)
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.with_etag_opt(etag)
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.with_schedule_tag_opt(schedule_tag))
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} else if let Some((Some(parent), name)) = resources.map_parent(resource_name.as_ref()) {
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if !parent.is_container() {
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return Err(DavError::Code(StatusCode::METHOD_NOT_ALLOWED));
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}
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// Validate ACL
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if !access_token.is_member(account_id)
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&& !resources.has_access_to_container(
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access_token,
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parent.document_id(),
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Acl::AddItems,
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)
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{
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return Err(DavError::Code(StatusCode::FORBIDDEN));
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}
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// Validate headers
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self.validate_headers(
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access_token,
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headers,
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vec![ResourceState {
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account_id,
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collection: resource.collection,
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document_id: Some(u32::MAX),
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path: resource_name.as_ref(),
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..Default::default()
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}],
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Default::default(),
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DavMethod::PUT,
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)
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.await?;
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// Validate ical object
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assert_is_unique_uid(
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self,
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&resources,
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account_id,
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parent.document_id(),
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validate_ical(&ical)?.into(),
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)
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.await?;
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// Build event
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let mut next_email_alarm = None;
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let mut event = CalendarEvent {
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names: vec![DavName {
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name: name.to_string(),
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parent_id: parent.document_id(),
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}],
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data: CalendarEventData::new(
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ical,
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Tz::Floating,
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self.core.groupware.max_ical_instances,
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&mut next_email_alarm,
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),
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size: bytes.len() as u32,
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..Default::default()
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};
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// Scheduling
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let mut itip_messages = None;
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if self.core.groupware.itip_enabled
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&& !access_token.emails.is_empty()
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&& access_token.has_permission(Permission::CalendarSchedulingSend)
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&& event.data.event_range_end() > now() as i64
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{
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match itip_create(&mut event.data.event, access_token.emails.as_slice()) {
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Ok(messages) => {
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if messages.iter().map(|r| r.to.len()).sum::<usize>()
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< self.core.groupware.itip_outbound_max_recipients
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{
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event.schedule_tag = Some(1);
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itip_messages = Some(ItipMessages::new(messages));
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} else {
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return Err(DavError::Condition(DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::MaxAttendeesPerInstance,
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)));
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}
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}
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Err(err) => {
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if let Some(failed_precondition) = err.failed_precondition() {
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return Err(DavError::Condition(
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DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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failed_precondition,
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)
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.with_details(err.to_string()),
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));
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}
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}
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}
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}
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let nudge_queue = next_email_alarm.is_some() || itip_messages.is_some();
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// Validate quota
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if !bytes.is_empty() {
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self.has_available_quota(
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&self.get_resource_token(access_token, account_id).await?,
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bytes.len() as u64,
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)
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.await?;
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}
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// Prepare write batch
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let mut batch = BatchBuilder::new();
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let document_id = self
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.store()
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.assign_document_ids(account_id, Collection::CalendarEvent, 1)
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.await
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.caused_by(trc::location!())?;
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let schedule_tag = event.schedule_tag;
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let etag = event
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.insert(
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access_token,
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account_id,
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document_id,
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next_email_alarm,
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&mut batch,
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)
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.caused_by(trc::location!())?
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.etag();
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if let Some(itip_messages) = itip_messages {
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itip_messages
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.queue(&mut batch)
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.caused_by(trc::location!())?;
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}
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self.commit_batch(batch).await.caused_by(trc::location!())?;
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if nudge_queue {
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self.notify_task_queue();
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}
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Ok(HttpResponse::new(StatusCode::CREATED)
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.with_etag_opt(etag)
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.with_schedule_tag_opt(schedule_tag))
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} else {
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Err(DavError::Code(StatusCode::CONFLICT))?
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}
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}
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}
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fn validate_ical(ical: &ICalendar) -> crate::Result<&str> {
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// Validate UIDs
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let mut uids = HashSet::with_capacity(1);
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// Validate component types
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let mut types: [u8; 5] = [0; 5];
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for comp in &ical.components {
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*(match comp.component_type {
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ICalendarComponentType::VEvent => &mut types[0],
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ICalendarComponentType::VTodo => &mut types[1],
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ICalendarComponentType::VJournal => &mut types[2],
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ICalendarComponentType::VFreebusy => &mut types[3],
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ICalendarComponentType::VAvailability => &mut types[4],
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_ => {
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continue;
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}
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}) += 1;
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if let Some(uid) = comp.uid() {
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uids.insert(uid);
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}
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}
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if uids.len() == 1 && types.iter().filter(|&&v| v == 0).count() == 4 {
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Ok(uids.iter().next().unwrap())
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} else {
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Err(DavError::Condition(
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DavErrorCondition::new(
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StatusCode::PRECONDITION_FAILED,
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CalCondition::ValidCalendarObjectResource,
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)
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.with_details("iCalendar must contain exactly one UID and same component types"),
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))
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}
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}
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