mirror of https://gitlab.com/xmpp-rs/xmpp-rs.git
416 lines
15 KiB
Rust
416 lines
15 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use crate::data_forms::DataForm;
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use crate::date::DateTime;
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use crate::message::MessagePayload;
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use crate::ns;
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use crate::pubsub::{Item as PubSubItem, ItemId, NodeName, Subscription, SubscriptionId};
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use crate::util::error::Error;
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use crate::Element;
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use jid::Jid;
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/// Event wrapper for a PubSub `<item/>`.
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#[derive(Debug, Clone)]
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pub struct Item(pub PubSubItem);
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impl_pubsub_item!(Item, PUBSUB_EVENT);
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/// Represents an event happening to a PubSub node.
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#[derive(Debug, Clone)]
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pub enum PubSubEvent {
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/*
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Collection {
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},
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*/
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/// This node’s configuration changed.
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Configuration {
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/// The node affected.
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node: NodeName,
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/// The new configuration of this node.
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form: Option<DataForm>,
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},
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/// This node has been deleted, with an optional redirect to another node.
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Delete {
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/// The node affected.
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node: NodeName,
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/// The xmpp: URI of another node replacing this one.
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redirect: Option<String>,
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},
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/// Some items have been published on this node.
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PublishedItems {
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/// The node affected.
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node: NodeName,
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/// The list of published items.
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items: Vec<Item>,
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},
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/// Some items have been removed from this node.
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RetractedItems {
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/// The node affected.
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node: NodeName,
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/// The list of retracted items.
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items: Vec<ItemId>,
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},
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/// All items of this node just got removed at once.
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Purge {
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/// The node affected.
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node: NodeName,
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},
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/// The user’s subscription to this node has changed.
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Subscription {
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/// The node affected.
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node: NodeName,
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/// The time at which this subscription will expire.
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expiry: Option<DateTime>,
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/// The JID of the user affected.
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jid: Option<Jid>,
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/// An identifier for this subscription.
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subid: Option<SubscriptionId>,
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/// The state of this subscription.
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subscription: Option<Subscription>,
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},
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}
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fn parse_items(elem: Element, node: NodeName) -> Result<PubSubEvent, Error> {
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let mut is_retract = None;
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let mut items = vec![];
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let mut retracts = vec![];
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for child in elem.children() {
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if child.is("item", ns::PUBSUB_EVENT) {
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match is_retract {
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None => is_retract = Some(false),
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Some(false) => (),
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Some(true) => {
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return Err(Error::ParseError(
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"Mix of item and retract in items element.",
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));
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}
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}
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items.push(Item::try_from(child.clone())?);
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} else if child.is("retract", ns::PUBSUB_EVENT) {
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match is_retract {
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None => is_retract = Some(true),
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Some(true) => (),
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Some(false) => {
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return Err(Error::ParseError(
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"Mix of item and retract in items element.",
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));
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}
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}
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check_no_children!(child, "retract");
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check_no_unknown_attributes!(child, "retract", ["id"]);
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let id = get_attr!(child, "id", Required);
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retracts.push(id);
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} else {
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return Err(Error::ParseError("Invalid child in items element."));
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}
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}
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Ok(match is_retract {
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Some(false) => PubSubEvent::PublishedItems { node, items },
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Some(true) => PubSubEvent::RetractedItems {
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node,
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items: retracts,
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},
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None => return Err(Error::ParseError("Missing children in items element.")),
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})
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}
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impl TryFrom<Element> for PubSubEvent {
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type Error = Error;
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fn try_from(elem: Element) -> Result<PubSubEvent, Error> {
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check_self!(elem, "event", PUBSUB_EVENT);
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check_no_attributes!(elem, "event");
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let mut payload = None;
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for child in elem.children() {
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let node = get_attr!(child, "node", Required);
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if child.is("configuration", ns::PUBSUB_EVENT) {
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let mut payloads = child.children().cloned().collect::<Vec<_>>();
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let item = payloads.pop();
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if !payloads.is_empty() {
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return Err(Error::ParseError(
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"More than a single payload in configuration element.",
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));
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}
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let form = match item {
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None => None,
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Some(payload) => Some(DataForm::try_from(payload)?),
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};
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payload = Some(PubSubEvent::Configuration { node, form });
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} else if child.is("delete", ns::PUBSUB_EVENT) {
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let mut redirect = None;
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for item in child.children() {
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if item.is("redirect", ns::PUBSUB_EVENT) {
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if redirect.is_some() {
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return Err(Error::ParseError(
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"More than one redirect in delete element.",
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));
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}
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let uri = get_attr!(item, "uri", Required);
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redirect = Some(uri);
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} else {
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return Err(Error::ParseError("Unknown child in delete element."));
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}
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}
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payload = Some(PubSubEvent::Delete { node, redirect });
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} else if child.is("items", ns::PUBSUB_EVENT) {
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payload = Some(parse_items(child.clone(), node)?);
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} else if child.is("purge", ns::PUBSUB_EVENT) {
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check_no_children!(child, "purge");
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payload = Some(PubSubEvent::Purge { node });
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} else if child.is("subscription", ns::PUBSUB_EVENT) {
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check_no_children!(child, "subscription");
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payload = Some(PubSubEvent::Subscription {
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node,
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expiry: get_attr!(child, "expiry", Option),
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jid: get_attr!(child, "jid", Option),
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subid: get_attr!(child, "subid", Option),
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subscription: get_attr!(child, "subscription", Option),
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});
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} else {
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return Err(Error::ParseError("Unknown child in event element."));
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}
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}
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payload.ok_or(Error::ParseError("No payload in event element."))
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}
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}
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impl From<PubSubEvent> for Element {
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fn from(event: PubSubEvent) -> Element {
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let payload = match event {
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PubSubEvent::Configuration { node, form } => {
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Element::builder("configuration", ns::PUBSUB_EVENT)
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.attr("node", node)
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.append_all(form.map(Element::from))
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}
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PubSubEvent::Delete { node, redirect } => Element::builder("purge", ns::PUBSUB_EVENT)
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.attr("node", node)
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.append_all(redirect.map(|redirect| {
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Element::builder("redirect", ns::PUBSUB_EVENT).attr("uri", redirect)
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})),
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PubSubEvent::PublishedItems { node, items } => {
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Element::builder("items", ns::PUBSUB_EVENT)
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.attr("node", node)
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.append_all(items)
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}
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PubSubEvent::RetractedItems { node, items } => {
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Element::builder("items", ns::PUBSUB_EVENT)
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.attr("node", node)
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.append_all(
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items
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.into_iter()
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.map(|id| Element::builder("retract", ns::PUBSUB_EVENT).attr("id", id)),
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)
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}
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PubSubEvent::Purge { node } => {
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Element::builder("purge", ns::PUBSUB_EVENT).attr("node", node)
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}
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PubSubEvent::Subscription {
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node,
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expiry,
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jid,
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subid,
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subscription,
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} => Element::builder("subscription", ns::PUBSUB_EVENT)
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.attr("node", node)
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.attr("expiry", expiry)
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.attr("jid", jid)
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.attr("subid", subid)
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.attr("subscription", subscription),
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};
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Element::builder("event", ns::PUBSUB_EVENT)
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.append(payload)
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.build()
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}
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}
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impl MessagePayload for PubSubEvent {}
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#[cfg(test)]
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mod tests {
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use super::*;
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use jid::BareJid;
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#[test]
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fn missing_items() {
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let elem: Element =
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"<event xmlns='http://jabber.org/protocol/pubsub#event'><items node='coucou'/></event>"
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.parse()
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.unwrap();
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let error = PubSubEvent::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Missing children in items element.");
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}
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#[test]
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fn test_simple_items() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event'><items node='coucou'><item id='test' publisher='test@coucou'/></items></event>".parse().unwrap();
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let event = PubSubEvent::try_from(elem).unwrap();
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match event {
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PubSubEvent::PublishedItems { node, items } => {
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assert_eq!(node, NodeName(String::from("coucou")));
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assert_eq!(items[0].id, Some(ItemId(String::from("test"))));
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assert_eq!(
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items[0].publisher.clone().unwrap(),
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BareJid::new("test@coucou").unwrap()
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);
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assert_eq!(items[0].payload, None);
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}
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_ => panic!(),
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}
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}
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#[test]
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fn test_simple_pep() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event'><items node='something'><item><foreign xmlns='example:namespace'/></item></items></event>".parse().unwrap();
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let event = PubSubEvent::try_from(elem).unwrap();
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match event {
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PubSubEvent::PublishedItems { node, items } => {
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assert_eq!(node, NodeName(String::from("something")));
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assert_eq!(items[0].id, None);
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assert_eq!(items[0].publisher, None);
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match items[0].payload {
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Some(ref elem) => assert!(elem.is("foreign", "example:namespace")),
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_ => panic!(),
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}
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}
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_ => panic!(),
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}
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}
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#[test]
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fn test_simple_retract() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event'><items node='something'><retract id='coucou'/><retract id='test'/></items></event>".parse().unwrap();
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let event = PubSubEvent::try_from(elem).unwrap();
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match event {
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PubSubEvent::RetractedItems { node, items } => {
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assert_eq!(node, NodeName(String::from("something")));
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assert_eq!(items[0], ItemId(String::from("coucou")));
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assert_eq!(items[1], ItemId(String::from("test")));
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}
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_ => panic!(),
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}
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}
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#[test]
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fn test_simple_delete() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event'><delete node='coucou'><redirect uri='hello'/></delete></event>".parse().unwrap();
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let event = PubSubEvent::try_from(elem).unwrap();
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match event {
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PubSubEvent::Delete { node, redirect } => {
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assert_eq!(node, NodeName(String::from("coucou")));
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assert_eq!(redirect, Some(String::from("hello")));
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}
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_ => panic!(),
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}
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}
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#[test]
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fn test_simple_purge() {
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let elem: Element =
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"<event xmlns='http://jabber.org/protocol/pubsub#event'><purge node='coucou'/></event>"
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.parse()
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.unwrap();
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let event = PubSubEvent::try_from(elem).unwrap();
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match event {
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PubSubEvent::Purge { node } => {
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assert_eq!(node, NodeName(String::from("coucou")));
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}
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_ => panic!(),
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}
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}
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#[test]
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fn test_simple_configure() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event'><configuration node='coucou'><x xmlns='jabber:x:data' type='result'><field var='FORM_TYPE' type='hidden'><value>http://jabber.org/protocol/pubsub#node_config</value></field></x></configuration></event>".parse().unwrap();
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let event = PubSubEvent::try_from(elem).unwrap();
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match event {
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PubSubEvent::Configuration { node, form: _ } => {
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assert_eq!(node, NodeName(String::from("coucou")));
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//assert_eq!(form.type_, Result_);
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}
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_ => panic!(),
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}
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}
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#[test]
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fn test_invalid() {
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let elem: Element =
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"<event xmlns='http://jabber.org/protocol/pubsub#event'><coucou node='test'/></event>"
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.parse()
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.unwrap();
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let error = PubSubEvent::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown child in event element.");
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}
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#[cfg(not(feature = "disable-validation"))]
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#[test]
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fn test_invalid_attribute() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event' coucou=''/>"
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.parse()
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.unwrap();
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let error = PubSubEvent::try_from(elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown attribute in event element.");
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}
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#[test]
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fn test_ex221_subscription() {
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let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event'><subscription expiry='2006-02-28T23:59:59+00:00' jid='francisco@denmark.lit' node='princely_musings' subid='ba49252aaa4f5d320c24d3766f0bdcade78c78d3' subscription='subscribed'/></event>"
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.parse()
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.unwrap();
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let event = PubSubEvent::try_from(elem.clone()).unwrap();
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match event.clone() {
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PubSubEvent::Subscription {
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node,
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expiry,
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jid,
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subid,
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subscription,
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} => {
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assert_eq!(node, NodeName(String::from("princely_musings")));
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assert_eq!(
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subid,
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Some(SubscriptionId(String::from(
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"ba49252aaa4f5d320c24d3766f0bdcade78c78d3"
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)))
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);
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assert_eq!(subscription, Some(Subscription::Subscribed));
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assert_eq!(jid.unwrap(), BareJid::new("francisco@denmark.lit").unwrap());
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assert_eq!(expiry, Some("2006-02-28T23:59:59Z".parse().unwrap()));
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}
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_ => panic!(),
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}
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let elem2: Element = event.into();
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assert_eq!(elem, elem2);
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}
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}
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